net: convert to using newly introduced integer sized types

Convert code to use u{8,16,32,64}_t and s{8,16,32,64}_t instead of C99
integer types.

Jira: ZEP-2051

Change-Id: I4ec03eb2183d59ef86ea2c20d956e5d272656837
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
diff --git a/drivers/ethernet/eth_dw.c b/drivers/ethernet/eth_dw.c
index 5f0bf52..060e5df 100644
--- a/drivers/ethernet/eth_dw.c
+++ b/drivers/ethernet/eth_dw.c
@@ -23,13 +23,13 @@
 #define SYS_LOG_LEVEL CONFIG_SYS_LOG_ETHERNET_LEVEL
 #include <logging/sys_log.h>
 
-static inline uint32_t eth_read(uint32_t base_addr, uint32_t offset)
+static inline u32_t eth_read(u32_t base_addr, u32_t offset)
 {
 	return sys_read32(base_addr + offset);
 }
 
-static inline void eth_write(uint32_t base_addr, uint32_t offset,
-			     uint32_t val)
+static inline void eth_write(u32_t base_addr, u32_t offset,
+			     u32_t val)
 {
 	sys_write32(val, base_addr + offset);
 }
@@ -37,9 +37,9 @@
 static void eth_rx(struct device *port)
 {
 	struct eth_runtime *context = port->driver_data;
-	uint32_t base_addr = context->base_addr;
+	u32_t base_addr = context->base_addr;
 	struct net_buf *buf;
-	uint32_t frm_len = 0;
+	u32_t frm_len = 0;
 
 	/* Check whether the RX descriptor is still owned by the device.  If not,
 	 * process the received frame or an error that may have occurred.
@@ -97,7 +97,7 @@
 static int eth_tx(struct device *port, struct net_buf *buf)
 {
 	struct eth_runtime *context = port->driver_data;
-	uint32_t base_addr = context->base_addr;
+	u32_t base_addr = context->base_addr;
 
 	/* Wait until the TX descriptor is no longer owned by the device. */
 	while (context->tx_desc.own == 1) {
@@ -135,8 +135,8 @@
 static void eth_dw_isr(struct device *port)
 {
 	struct eth_runtime *context = port->driver_data;
-	uint32_t base_addr = context->base_addr;
-	uint32_t int_status;
+	u32_t base_addr = context->base_addr;
+	u32_t int_status;
 
 	int_status = eth_read(base_addr, REG_ADDR_STATUS);
 
@@ -186,14 +186,14 @@
 {
 	struct eth_runtime *context = port->driver_data;
 	const struct eth_config *config = port->config->config_info;
-	uint32_t base_addr;
+	u32_t base_addr;
 
 	union {
 		struct {
-			uint8_t bytes[6];
-			uint8_t pad[2];
+			u8_t bytes[6];
+			u8_t pad[2];
 		} __attribute__((packed));
-		uint32_t words[2];
+		u32_t words[2];
 	} mac_addr;
 
 	if (!eth_setup(port))
@@ -214,7 +214,7 @@
 	context->tx_desc.tdes0 = 0;
 	context->tx_desc.tdes1 = 0;
 
-	context->tx_desc.buf1_ptr = (uint8_t *)context->tx_buf;
+	context->tx_desc.buf1_ptr = (u8_t *)context->tx_buf;
 	context->tx_desc.tx_end_of_ring = 1;
 	context->tx_desc.first_seg_in_frm = 1;
 	context->tx_desc.last_seg_in_frm = 1;
@@ -224,7 +224,7 @@
 	context->rx_desc.rdes0 = 0;
 	context->rx_desc.rdes1 = 0;
 
-	context->rx_desc.buf1_ptr = (uint8_t *)context->rx_buf;
+	context->rx_desc.buf1_ptr = (u8_t *)context->rx_buf;
 	context->rx_desc.own = 1;
 	context->rx_desc.first_desc = 1;
 	context->rx_desc.last_desc = 1;
@@ -232,8 +232,8 @@
 	context->rx_desc.rx_end_of_ring = 1;
 
 	/* Install transmit and receive descriptors. */
-	eth_write(base_addr, REG_ADDR_RX_DESC_LIST, (uint32_t)&context->rx_desc);
-	eth_write(base_addr, REG_ADDR_TX_DESC_LIST, (uint32_t)&context->tx_desc);
+	eth_write(base_addr, REG_ADDR_RX_DESC_LIST, (u32_t)&context->rx_desc);
+	eth_write(base_addr, REG_ADDR_TX_DESC_LIST, (u32_t)&context->tx_desc);
 
 	eth_write(base_addr, REG_ADDR_MAC_CONF,
 		  /* Set the RMII speed to 100Mbps */
diff --git a/drivers/ethernet/eth_dw_priv.h b/drivers/ethernet/eth_dw_priv.h
index 7e23242..bab7d26 100644
--- a/drivers/ethernet/eth_dw_priv.h
+++ b/drivers/ethernet/eth_dw_priv.h
@@ -23,7 +23,7 @@
 typedef void (*eth_config_irq_t)(struct device *port);
 
 struct eth_config {
-	uint32_t irq_num;
+	u32_t irq_num;
 	eth_config_irq_t config_func;
 
 #ifdef CONFIG_ETH_DW_SHARED_IRQ
@@ -46,54 +46,54 @@
 	union {
 		struct {
 			/* Only valid in half-duplex mode. */
-			uint32_t deferred_bit      : 1;
-			uint32_t err_underflow     : 1;
-			uint32_t err_excess_defer  : 1;
-			uint32_t coll_cnt_slot_num : 4;
-			uint32_t vlan_frm          : 1;
-			uint32_t err_excess_coll   : 1;
-			uint32_t err_late_coll     : 1;
-			uint32_t err_no_carrier    : 1;
-			uint32_t err_carrier_loss  : 1;
-			uint32_t err_ip_payload    : 1;
-			uint32_t err_frm_flushed   : 1;
-			uint32_t err_jabber_tout   : 1;
+			u32_t deferred_bit      : 1;
+			u32_t err_underflow     : 1;
+			u32_t err_excess_defer  : 1;
+			u32_t coll_cnt_slot_num : 4;
+			u32_t vlan_frm          : 1;
+			u32_t err_excess_coll   : 1;
+			u32_t err_late_coll     : 1;
+			u32_t err_no_carrier    : 1;
+			u32_t err_carrier_loss  : 1;
+			u32_t err_ip_payload    : 1;
+			u32_t err_frm_flushed   : 1;
+			u32_t err_jabber_tout   : 1;
 			/* OR of all other error bits. */
-			uint32_t err_summary       : 1;
-			uint32_t err_ip_hdr        : 1;
-			uint32_t tx_timestamp_stat : 1;
-			uint32_t vlan_ins_ctrl     : 2;
-			uint32_t addr2_chained     : 1;
-			uint32_t tx_end_of_ring    : 1;
-			uint32_t chksum_ins_ctrl   : 2;
-			uint32_t replace_crc       : 1;
-			uint32_t tx_timestamp_en   : 1;
-			uint32_t dis_pad           : 1;
-			uint32_t dis_crc           : 1;
-			uint32_t first_seg_in_frm  : 1;
-			uint32_t last_seg_in_frm   : 1;
-			uint32_t intr_on_complete  : 1;
+			u32_t err_summary       : 1;
+			u32_t err_ip_hdr        : 1;
+			u32_t tx_timestamp_stat : 1;
+			u32_t vlan_ins_ctrl     : 2;
+			u32_t addr2_chained     : 1;
+			u32_t tx_end_of_ring    : 1;
+			u32_t chksum_ins_ctrl   : 2;
+			u32_t replace_crc       : 1;
+			u32_t tx_timestamp_en   : 1;
+			u32_t dis_pad           : 1;
+			u32_t dis_crc           : 1;
+			u32_t first_seg_in_frm  : 1;
+			u32_t last_seg_in_frm   : 1;
+			u32_t intr_on_complete  : 1;
 			/* When set, descriptor is owned by DMA. */
-			uint32_t own               : 1;
+			u32_t own               : 1;
 		};
-		uint32_t tdes0;
+		u32_t tdes0;
 	};
 	/* Second word of transmit descriptor */
 	union {
 		struct {
-			uint32_t tx_buf1_sz        : 13;
-			uint32_t                   : 3;
-			uint32_t tx_buf2_sz        : 13;
-			uint32_t src_addr_ins_ctrl : 3;
+			u32_t tx_buf1_sz        : 13;
+			u32_t                   : 3;
+			u32_t tx_buf2_sz        : 13;
+			u32_t src_addr_ins_ctrl : 3;
 		};
-		uint32_t tdes1;
+		u32_t tdes1;
 	};
 	/* Pointer to frame data buffer */
-	uint8_t *buf1_ptr;
+	u8_t *buf1_ptr;
 	/* Unused, since this driver initializes only a single descriptor for each
 	 * direction.
 	 */
-	uint8_t *buf2_ptr;
+	u8_t *buf2_ptr;
 };
 
 /* Transmit descriptor */
@@ -101,63 +101,63 @@
 	/* First word of receive descriptor */
 	union {
 		struct {
-			uint32_t ext_stat          : 1;
-			uint32_t err_crc           : 1;
-			uint32_t err_dribble_bit   : 1;
-			uint32_t err_rx_mii        : 1;
-			uint32_t err_rx_wdt        : 1;
-			uint32_t frm_type          : 1;
-			uint32_t err_late_coll     : 1;
-			uint32_t giant_frm         : 1;
-			uint32_t last_desc         : 1;
-			uint32_t first_desc        : 1;
-			uint32_t vlan_tag          : 1;
-			uint32_t err_overflow      : 1;
-			uint32_t length_err        : 1;
-			uint32_t s_addr_filt_fail  : 1;
-			uint32_t err_desc          : 1;
-			uint32_t err_summary       : 1;
-			uint32_t frm_len           : 14;
-			uint32_t d_addr_filt_fail  : 1;
-			uint32_t own               : 1;
+			u32_t ext_stat          : 1;
+			u32_t err_crc           : 1;
+			u32_t err_dribble_bit   : 1;
+			u32_t err_rx_mii        : 1;
+			u32_t err_rx_wdt        : 1;
+			u32_t frm_type          : 1;
+			u32_t err_late_coll     : 1;
+			u32_t giant_frm         : 1;
+			u32_t last_desc         : 1;
+			u32_t first_desc        : 1;
+			u32_t vlan_tag          : 1;
+			u32_t err_overflow      : 1;
+			u32_t length_err        : 1;
+			u32_t s_addr_filt_fail  : 1;
+			u32_t err_desc          : 1;
+			u32_t err_summary       : 1;
+			u32_t frm_len           : 14;
+			u32_t d_addr_filt_fail  : 1;
+			u32_t own               : 1;
 		};
-		uint32_t rdes0;
+		u32_t rdes0;
 	};
 	/* Second word of receive descriptor */
 	union {
 		struct {
-			uint32_t rx_buf1_sz        : 13;
-			uint32_t                   : 1;
-			uint32_t addr2_chained     : 1;
-			uint32_t rx_end_of_ring    : 1;
-			uint32_t rx_buf2_sz        : 13;
-			uint32_t                   : 2;
-			uint32_t dis_int_compl     : 1;
+			u32_t rx_buf1_sz        : 13;
+			u32_t                   : 1;
+			u32_t addr2_chained     : 1;
+			u32_t rx_end_of_ring    : 1;
+			u32_t rx_buf2_sz        : 13;
+			u32_t                   : 2;
+			u32_t dis_int_compl     : 1;
 		};
-		uint32_t rdes1;
+		u32_t rdes1;
 	};
 	/* Pointer to frame data buffer */
-	uint8_t *buf1_ptr;
+	u8_t *buf1_ptr;
 	/* Unused, since this driver initializes only a single descriptor for each
 	 * direction.
 	 */
-	uint8_t *buf2_ptr;
+	u8_t *buf2_ptr;
 };
 
 /* Driver metadata associated with each Ethernet device */
 struct eth_runtime {
-	uint32_t base_addr;
+	u32_t base_addr;
 #ifdef CONFIG_PCI
 	struct pci_dev_info pci_dev;
 #endif  /* CONFIG_PCI */
 	/* Transmit descriptor */
 	volatile struct eth_tx_desc tx_desc;
 	/* Transmit DMA packet buffer */
-	volatile uint8_t tx_buf[UIP_BUFSIZE];
+	volatile u8_t tx_buf[UIP_BUFSIZE];
 	/* Receive descriptor */
 	volatile struct eth_rx_desc rx_desc;
 	/* Receive DMA packet buffer */
-	volatile uint8_t rx_buf[UIP_BUFSIZE];
+	volatile u8_t rx_buf[UIP_BUFSIZE];
 };
 
 #define MMC_DEFAULT_MASK               0xffffffff
diff --git a/drivers/ethernet/eth_enc28j60.c b/drivers/ethernet/eth_enc28j60.c
index c0321c8..8a02546 100644
--- a/drivers/ethernet/eth_enc28j60.c
+++ b/drivers/ethernet/eth_enc28j60.c
@@ -28,15 +28,15 @@
 static int eth_enc28j60_soft_reset(struct device *dev)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint8_t tx_buf[2] = {ENC28J60_SPI_SC, 0xFF};
+	u8_t tx_buf[2] = {ENC28J60_SPI_SC, 0xFF};
 
 	return spi_write(context->spi, tx_buf, 2);
 }
 
-static void eth_enc28j60_set_bank(struct device *dev, uint16_t reg_addr)
+static void eth_enc28j60_set_bank(struct device *dev, u16_t reg_addr)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint8_t tx_buf[2];
+	u8_t tx_buf[2];
 
 	k_sem_take(&context->spi_sem, K_FOREVER);
 
@@ -53,11 +53,11 @@
 	k_sem_give(&context->spi_sem);
 }
 
-static void eth_enc28j60_write_reg(struct device *dev, uint16_t reg_addr,
-				   uint8_t value)
+static void eth_enc28j60_write_reg(struct device *dev, u16_t reg_addr,
+				   u8_t value)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint8_t tx_buf[2];
+	u8_t tx_buf[2];
 
 	k_sem_take(&context->spi_sem, K_FOREVER);
 
@@ -69,12 +69,12 @@
 	k_sem_give(&context->spi_sem);
 }
 
-static void eth_enc28j60_read_reg(struct device *dev, uint16_t reg_addr,
-				  uint8_t *value)
+static void eth_enc28j60_read_reg(struct device *dev, u16_t reg_addr,
+				  u8_t *value)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint8_t tx_size = 2;
-	uint8_t tx_buf[3];
+	u8_t tx_size = 2;
+	u8_t tx_buf[3];
 
 	k_sem_take(&context->spi_sem, K_FOREVER);
 
@@ -92,11 +92,11 @@
 	k_sem_give(&context->spi_sem);
 }
 
-static void eth_enc28j60_set_eth_reg(struct device *dev, uint16_t reg_addr,
-				     uint8_t value)
+static void eth_enc28j60_set_eth_reg(struct device *dev, u16_t reg_addr,
+				     u8_t value)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint8_t tx_buf[2];
+	u8_t tx_buf[2];
 
 	k_sem_take(&context->spi_sem, K_FOREVER);
 
@@ -109,11 +109,11 @@
 }
 
 
-static void eth_enc28j60_clear_eth_reg(struct device *dev, uint16_t reg_addr,
-				       uint8_t value)
+static void eth_enc28j60_clear_eth_reg(struct device *dev, u16_t reg_addr,
+				       u8_t value)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint8_t tx_buf[2];
+	u8_t tx_buf[2];
 
 	k_sem_take(&context->spi_sem, K_FOREVER);
 
@@ -125,13 +125,13 @@
 	k_sem_give(&context->spi_sem);
 }
 
-static void eth_enc28j60_write_mem(struct device *dev, uint8_t *data_buffer,
-				   uint16_t buf_len)
+static void eth_enc28j60_write_mem(struct device *dev, u8_t *data_buffer,
+				   u16_t buf_len)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint8_t *index_buf;
-	uint16_t num_segments;
-	uint16_t num_remaining;
+	u8_t *index_buf;
+	u16_t num_segments;
+	u16_t num_remaining;
 
 	index_buf = data_buffer;
 	num_segments = buf_len / MAX_BUFFER_LENGTH;
@@ -156,12 +156,12 @@
 	k_sem_give(&context->spi_sem);
 }
 
-static void eth_enc28j60_read_mem(struct device *dev, uint8_t *data_buffer,
-				  uint16_t buf_len)
+static void eth_enc28j60_read_mem(struct device *dev, u8_t *data_buffer,
+				  u16_t buf_len)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint16_t num_segments;
-	uint16_t num_remaining;
+	u16_t num_segments;
+	u16_t num_remaining;
 
 	num_segments = buf_len / MAX_BUFFER_LENGTH;
 	num_remaining = buf_len - MAX_BUFFER_LENGTH * num_segments;
@@ -194,10 +194,10 @@
 	k_sem_give(&context->spi_sem);
 }
 
-static void eth_enc28j60_write_phy(struct device *dev, uint16_t reg_addr,
-				   int16_t data)
+static void eth_enc28j60_write_phy(struct device *dev, u16_t reg_addr,
+				   s16_t data)
 {
-	uint8_t data_mistat;
+	u8_t data_mistat;
 
 	eth_enc28j60_set_bank(dev, ENC28J60_REG_MIREGADR);
 	eth_enc28j60_write_reg(dev, ENC28J60_REG_MIREGADR, reg_addr);
@@ -215,7 +215,7 @@
 
 static void eth_enc28j60_gpio_callback(struct device *dev,
 				       struct gpio_callback *cb,
-				       uint32_t pins)
+				       u32_t pins)
 {
 	struct eth_enc28j60_runtime *context =
 		CONTAINER_OF(cb, struct eth_enc28j60_runtime, gpio_cb);
@@ -225,7 +225,7 @@
 
 static void eth_enc28j60_init_buffers(struct device *dev)
 {
-	uint8_t data_estat;
+	u8_t data_estat;
 
 	/* Reception buffers initialization */
 	eth_enc28j60_set_bank(dev, ENC28J60_REG_ERXSTL);
@@ -273,7 +273,7 @@
 static void eth_enc28j60_init_mac(struct device *dev)
 {
 	const struct eth_enc28j60_config *config = dev->config->config_info;
-	uint8_t data_macon;
+	u8_t data_macon;
 
 	eth_enc28j60_set_bank(dev, ENC28J60_REG_MACON1);
 
@@ -425,15 +425,15 @@
 }
 
 static int eth_enc28j60_tx(struct device *dev, struct net_pkt *pkt,
-			   uint16_t len)
+			   u16_t len)
 {
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint16_t tx_bufaddr = ENC28J60_TXSTART;
+	u16_t tx_bufaddr = ENC28J60_TXSTART;
 	bool first_frag = true;
-	uint8_t per_packet_control;
-	uint16_t tx_bufaddr_end;
+	u8_t per_packet_control;
+	u16_t tx_bufaddr_end;
 	struct net_buf *frag;
-	uint8_t tx_end;
+	u8_t tx_end;
 
 	k_sem_take(&context->tx_rx_sem, K_FOREVER);
 
@@ -462,8 +462,8 @@
 	eth_enc28j60_write_mem(dev, &per_packet_control, 1);
 
 	for (frag = pkt->frags; frag; frag = frag->frags) {
-		uint8_t *data_ptr;
-		uint16_t data_len;
+		u8_t *data_ptr;
+		u16_t data_len;
 
 		if (first_frag) {
 			data_ptr = net_pkt_ll(pkt);
@@ -509,8 +509,8 @@
 {
 	const struct eth_enc28j60_config *config = dev->config->config_info;
 	struct eth_enc28j60_runtime *context = dev->driver_data;
-	uint16_t lengthfr;
-	uint8_t counter;
+	u16_t lengthfr;
+	u8_t counter;
 
 	/* Errata 6. The Receive Packet Pending Interrupt Flag (EIR.PKTIF)
 	 * does not reliably/accurately report the status of pending packet.
@@ -523,14 +523,14 @@
 
 	do {
 		struct net_buf *pkt_buf = NULL;
-		uint16_t frm_len = 0;
+		u16_t frm_len = 0;
 		struct net_pkt *pkt;
-		uint16_t next_packet;
-		uint8_t np[2];
+		u16_t next_packet;
+		u8_t np[2];
 
 		/* Read address for next packet */
 		eth_enc28j60_read_mem(dev, np, 2);
-		next_packet = np[0] | (uint16_t)np[1] << 8;
+		next_packet = np[0] | (u16_t)np[1] << 8;
 
 		/* Errata 14. Even values in ERXRDPT
 		 * may corrupt receive buffer.
@@ -559,7 +559,7 @@
 
 		do {
 			size_t frag_len;
-			uint8_t *data_ptr;
+			u8_t *data_ptr;
 			size_t spi_frame_len;
 
 			/* Reserve a data frag to receive the frame */
@@ -629,7 +629,7 @@
 {
 	struct device *dev = (struct device *) arg1;
 	struct eth_enc28j60_runtime *context;
-	uint8_t int_stat;
+	u8_t int_stat;
 
 	ARG_UNUSED(unused1);
 	ARG_UNUSED(unused2);
@@ -652,7 +652,7 @@
 
 static int eth_net_tx(struct net_if *iface, struct net_pkt *pkt)
 {
-	uint16_t len = net_pkt_ll_reserve(pkt) + net_pkt_get_len(pkt);
+	u16_t len = net_pkt_ll_reserve(pkt) + net_pkt_get_len(pkt);
 	int ret;
 
 	SYS_LOG_DBG("pkt %p (len %u)", pkt, len);
@@ -667,7 +667,7 @@
 
 #ifdef CONFIG_ETH_ENC28J60_0
 
-static uint8_t mac_address_0[6] = { MICROCHIP_OUI_B0,
+static u8_t mac_address_0[6] = { MICROCHIP_OUI_B0,
 				    MICROCHIP_OUI_B1,
 				    MICROCHIP_OUI_B2,
 				    CONFIG_ETH_ENC28J60_0_MAC3,
diff --git a/drivers/ethernet/eth_enc28j60_priv.h b/drivers/ethernet/eth_enc28j60_priv.h
index 3ba9b2e..3163c6d 100644
--- a/drivers/ethernet/eth_enc28j60_priv.h
+++ b/drivers/ethernet/eth_enc28j60_priv.h
@@ -215,12 +215,12 @@
 
 struct eth_enc28j60_config {
 	const char *gpio_port;
-	uint8_t gpio_pin;
+	u8_t gpio_pin;
 	const char *spi_port;
-	uint32_t spi_freq;
-	uint8_t spi_slave;
-	uint8_t full_duplex;
-	int32_t timeout;
+	u32_t spi_freq;
+	u8_t spi_slave;
+	u8_t full_duplex;
+	s32_t timeout;
 };
 
 struct eth_enc28j60_runtime {
@@ -229,9 +229,9 @@
 	struct device *gpio;
 	struct device *spi;
 	struct gpio_callback gpio_cb;
-	uint8_t mem_buf[MAX_BUFFER_LENGTH + 1];
-	uint8_t  tx_tsv[TSV_SIZE];
-	uint8_t  rx_rsv[RSV_SIZE];
+	u8_t mem_buf[MAX_BUFFER_LENGTH + 1];
+	u8_t  tx_tsv[TSV_SIZE];
+	u8_t  rx_rsv[RSV_SIZE];
 	struct k_sem tx_rx_sem;
 	struct k_sem int_sem;
 	struct k_sem spi_sem;
diff --git a/drivers/ethernet/eth_mcux.c b/drivers/ethernet/eth_mcux.c
index 428219f..27b1b8f 100644
--- a/drivers/ethernet/eth_mcux.c
+++ b/drivers/ethernet/eth_mcux.c
@@ -67,7 +67,7 @@
 	bool link_up;
 	phy_duplex_t phy_duplex;
 	phy_speed_t phy_speed;
-	uint8_t mac_addr[6];
+	u8_t mac_addr[6];
 	struct k_work phy_work;
 	struct k_delayed_work delayed_phy_work;
 	/* TODO: FIXME. This Ethernet frame sized buffer is used for
@@ -82,7 +82,7 @@
 	 * bypassing it and writing a more complex driver working
 	 * directly with hardware).
 	 */
-	uint8_t frame_buf[1500];
+	u8_t frame_buf[1500];
 };
 
 static void eth_0_config_func(void);
@@ -99,13 +99,13 @@
 #define ETH_MCUX_BUFFER_SIZE \
 	ROUND_UP(ENET_FRAME_MAX_FRAMELEN, ENET_BUFF_ALIGNMENT)
 
-static uint8_t __aligned(ENET_BUFF_ALIGNMENT)
+static u8_t __aligned(ENET_BUFF_ALIGNMENT)
 rx_buffer[CONFIG_ETH_MCUX_RX_BUFFERS][ETH_MCUX_BUFFER_SIZE];
 
-static uint8_t __aligned(ENET_BUFF_ALIGNMENT)
+static u8_t __aligned(ENET_BUFF_ALIGNMENT)
 tx_buffer[CONFIG_ETH_MCUX_TX_BUFFERS][ETH_MCUX_BUFFER_SIZE];
 
-static void eth_mcux_decode_duplex_and_speed(uint32_t status,
+static void eth_mcux_decode_duplex_and_speed(u32_t status,
 					     phy_duplex_t *p_phy_duplex,
 					     phy_speed_t *p_phy_speed)
 {
@@ -131,7 +131,7 @@
 
 static void eth_mcux_phy_enter_reset(struct eth_context *context)
 {
-	const uint32_t phy_addr = 0;
+	const u32_t phy_addr = 0;
 
 	/* Reset the PHY. */
 	ENET_StartSMIWrite(ENET, phy_addr, PHY_BASICCONTROL_REG,
@@ -197,11 +197,11 @@
 
 static void eth_mcux_phy_event(struct eth_context *context)
 {
-	uint32_t status;
+	u32_t status;
 	bool link_up;
 	phy_duplex_t phy_duplex = kPHY_FullDuplex;
 	phy_speed_t phy_speed = kPHY_Speed100M;
-	const uint32_t phy_addr = 0;
+	const u32_t phy_addr = 0;
 
 #ifdef CONFIG_ETH_MCUX_PHY_DETAILED_DEBUG
 	SYS_LOG_DBG("phy_state=%s", phy_state_name(context->phy_state));
@@ -310,11 +310,11 @@
 {
 	struct eth_context *context = iface->dev->driver_data;
 	const struct net_buf *frag;
-	uint8_t *dst;
+	u8_t *dst;
 	status_t status;
 	unsigned int imask;
 
-	uint16_t total_len = net_pkt_ll_reserve(pkt) + net_pkt_get_len(pkt);
+	u16_t total_len = net_pkt_ll_reserve(pkt) + net_pkt_get_len(pkt);
 
 	k_sem_take(&context->tx_buf_sem, K_FOREVER);
 
@@ -359,8 +359,8 @@
 {
 	struct eth_context *context = iface->driver_data;
 	struct net_pkt *pkt;
-	const uint8_t *src;
-	uint32_t frame_length = 0;
+	const u8_t *src;
+	u32_t frame_length = 0;
 	status_t status;
 	unsigned int imask;
 
@@ -481,9 +481,9 @@
 }
 
 #if defined(CONFIG_ETH_MCUX_0_RANDOM_MAC)
-static void generate_mac(uint8_t *mac_addr)
+static void generate_mac(u8_t *mac_addr)
 {
-	uint32_t entropy;
+	u32_t entropy;
 
 	entropy = sys_rand32_get();
 
@@ -498,7 +498,7 @@
 {
 	struct eth_context *context = dev->driver_data;
 	enet_config_t enet_config;
-	uint32_t sys_clock;
+	u32_t sys_clock;
 	enet_buffer_config_t buffer_config = {
 		.rxBdNumber = CONFIG_ETH_MCUX_RX_BUFFERS,
 		.txBdNumber = CONFIG_ETH_MCUX_TX_BUFFERS,
@@ -596,7 +596,7 @@
 {
 	struct device *dev = p;
 	struct eth_context *context = dev->driver_data;
-	uint32_t pending = ENET_GetInterruptStatus(ENET);
+	u32_t pending = ENET_GetInterruptStatus(ENET);
 
 	if (pending & ENET_EIR_MII_MASK) {
 		k_work_submit(&context->phy_work);
diff --git a/drivers/ethernet/eth_sam_gmac.c b/drivers/ethernet/eth_sam_gmac.c
index 7df7993..9f7c513 100644
--- a/drivers/ethernet/eth_sam_gmac.c
+++ b/drivers/ethernet/eth_sam_gmac.c
@@ -93,9 +93,9 @@
 /*
  * Get one 32 bit item from the ring buffer
  */
-static uint32_t ring_buf_get(struct ring_buf *rb)
+static u32_t ring_buf_get(struct ring_buf *rb)
 {
-	uint32_t val;
+	u32_t val;
 
 	__ASSERT(rb->tail != rb->head,
 		 "retrieving data from empty ring buffer");
@@ -109,7 +109,7 @@
 /*
  * Put one 32 bit item into the ring buffer
  */
-static void ring_buf_put(struct ring_buf *rb, uint32_t val)
+static void ring_buf_put(struct ring_buf *rb, u32_t val)
 {
 	rb->buf[rb->head] = val;
 	MODULO_INC(rb->head, rb->len);
@@ -136,8 +136,8 @@
 /*
  * Set MAC Address for frame filtering logic
  */
-static void mac_addr_set(Gmac *gmac, uint8_t index,
-				 uint8_t mac_addr[6])
+static void mac_addr_set(Gmac *gmac, u8_t index,
+				 u8_t mac_addr[6])
 {
 	__ASSERT(index < 4, "index has to be in the range 0..3");
 
@@ -157,7 +157,7 @@
 	struct gmac_desc_list *rx_desc_list = &queue->rx_desc_list;
 	struct ring_buf *rx_pkt_list = &queue->rx_pkt_list;
 	struct net_buf *rx_buf;
-	uint8_t *rx_buf_addr;
+	u8_t *rx_buf_addr;
 
 	__ASSERT_NO_MSG(rx_pkt_list->buf);
 
@@ -172,15 +172,15 @@
 			return -ENOBUFS;
 		}
 
-		rx_pkt_list->buf[i] = (uint32_t)rx_buf;
+		rx_pkt_list->buf[i] = (u32_t)rx_buf;
 
 		rx_buf_addr = rx_buf->data;
-		__ASSERT(!((uint32_t)rx_buf_addr & ~GMAC_RXW0_ADDR),
+		__ASSERT(!((u32_t)rx_buf_addr & ~GMAC_RXW0_ADDR),
 			 "Misaligned RX buffer address");
 		__ASSERT(rx_buf->size == CONFIG_NET_BUF_DATA_SIZE,
 			 "Incorrect length of RX data buffer");
 		/* Give ownership to GMAC and remove the wrap bit */
-		rx_desc_list->buf[i].w0 = (uint32_t)rx_buf_addr & GMAC_RXW0_ADDR;
+		rx_desc_list->buf[i].w0 = (u32_t)rx_buf_addr & GMAC_RXW0_ADDR;
 		rx_desc_list->buf[i].w1 = 0;
 	}
 
@@ -293,7 +293,7 @@
 	}
 
 	/* Set Receive Buffer Queue Pointer Register */
-	gmac->GMAC_RBQB = (uint32_t)queue->rx_desc_list.buf;
+	gmac->GMAC_RBQB = (u32_t)queue->rx_desc_list.buf;
 
 	/* Restart reception */
 	gmac->GMAC_NCR |=  GMAC_NCR_RXEN;
@@ -304,9 +304,9 @@
  *
  * According to 802.3 MDC should be less then 2.5 MHz.
  */
-static int get_mck_clock_divisor(uint32_t mck)
+static int get_mck_clock_divisor(u32_t mck)
 {
-	uint32_t mck_divisor;
+	u32_t mck_divisor;
 
 	if (mck <= 20000000) {
 		mck_divisor = GMAC_NCFGR_CLK_MCK_8;
@@ -328,7 +328,7 @@
 	return mck_divisor;
 }
 
-static int gmac_init(Gmac *gmac, uint32_t gmac_ncfgr_val)
+static int gmac_init(Gmac *gmac, u32_t gmac_ncfgr_val)
 {
 	int mck_divisor;
 
@@ -364,9 +364,9 @@
 	return 0;
 }
 
-static void link_configure(Gmac *gmac, uint32_t flags)
+static void link_configure(Gmac *gmac, u32_t flags)
 {
-	uint32_t val;
+	u32_t val;
 
 	gmac->GMAC_NCR &= ~(GMAC_NCR_RXEN | GMAC_NCR_TXEN);
 
@@ -387,9 +387,9 @@
 
 	__ASSERT_NO_MSG(queue->rx_desc_list.len > 0);
 	__ASSERT_NO_MSG(queue->tx_desc_list.len > 0);
-	__ASSERT(!((uint32_t)queue->rx_desc_list.buf & ~GMAC_RBQB_ADDR_Msk),
+	__ASSERT(!((u32_t)queue->rx_desc_list.buf & ~GMAC_RBQB_ADDR_Msk),
 		 "RX descriptors have to be word aligned");
-	__ASSERT(!((uint32_t)queue->tx_desc_list.buf & ~GMAC_TBQB_ADDR_Msk),
+	__ASSERT(!((u32_t)queue->tx_desc_list.buf & ~GMAC_TBQB_ADDR_Msk),
 		 "TX descriptors have to be word aligned");
 
 	/* Setup descriptor lists */
@@ -408,9 +408,9 @@
 		   queue->tx_desc_list.len - 1);
 
 	/* Set Receive Buffer Queue Pointer Register */
-	gmac->GMAC_RBQB = (uint32_t)queue->rx_desc_list.buf;
+	gmac->GMAC_RBQB = (u32_t)queue->rx_desc_list.buf;
 	/* Set Transmit Buffer Queue Pointer Register */
-	gmac->GMAC_TBQB = (uint32_t)queue->tx_desc_list.buf;
+	gmac->GMAC_TBQB = (u32_t)queue->tx_desc_list.buf;
 
 	/* Configure GMAC DMA transfer */
 	gmac->GMAC_DCFGR =
@@ -442,9 +442,9 @@
 	struct gmac_desc_list *rx_desc_list = &queue->rx_desc_list;
 	struct gmac_desc_list *tx_desc_list = &queue->tx_desc_list;
 
-	__ASSERT(!((uint32_t)rx_desc_list->buf & ~GMAC_RBQB_ADDR_Msk),
+	__ASSERT(!((u32_t)rx_desc_list->buf & ~GMAC_RBQB_ADDR_Msk),
 		 "RX descriptors have to be word aligned");
-	__ASSERT(!((uint32_t)tx_desc_list->buf & ~GMAC_TBQB_ADDR_Msk),
+	__ASSERT(!((u32_t)tx_desc_list->buf & ~GMAC_TBQB_ADDR_Msk),
 		 "TX descriptors have to be word aligned");
 	__ASSERT((rx_desc_list->len == 1) && (tx_desc_list->len == 1),
 		 "Priority queues are currently not supported, descriptor "
@@ -460,9 +460,9 @@
 	tx_desc_list->buf[0].w1 = GMAC_TXW1_USED | GMAC_TXW1_WRAP;
 
 	/* Set Receive Buffer Queue Pointer Register */
-	gmac->GMAC_RBQBAPQ[queue->que_idx - 1] = (uint32_t)rx_desc_list->buf;
+	gmac->GMAC_RBQBAPQ[queue->que_idx - 1] = (u32_t)rx_desc_list->buf;
 	/* Set Transmit Buffer Queue Pointer Register */
-	gmac->GMAC_TBQBAPQ[queue->que_idx - 1] = (uint32_t)tx_desc_list->buf;
+	gmac->GMAC_TBQBAPQ[queue->que_idx - 1] = (u32_t)tx_desc_list->buf;
 
 	return 0;
 }
@@ -476,10 +476,10 @@
 	bool frame_is_complete;
 	struct net_buf *frag;
 	struct net_buf *new_frag;
-	uint8_t *frag_data;
-	uint32_t frag_len;
-	uint32_t frame_len = 0;
-	uint16_t tail;
+	u8_t *frag_data;
+	u32_t frag_len;
+	u32_t frame_len = 0;
+	u16_t tail;
 
 	/* Check if there exists a complete frame in RX descriptor list */
 	tail = rx_desc_list->tail;
@@ -517,7 +517,7 @@
 	 */
 	while ((rx_desc->w0 & GMAC_RXW0_OWNERSHIP) && !frame_is_complete) {
 		frag = (struct net_buf *)rx_pkt_list->buf[tail];
-		frag_data = (uint8_t *)(rx_desc->w0 & GMAC_RXW0_ADDR);
+		frag_data = (u8_t *)(rx_desc->w0 & GMAC_RXW0_ADDR);
 		__ASSERT(frag->data == frag_data,
 			 "RX descriptor and buffer list desynchronized");
 		frame_is_complete = (bool)(rx_desc->w1 & GMAC_RXW1_EOF);
@@ -544,7 +544,7 @@
 				net_buf_add(frag, frag_len);
 				net_pkt_frag_insert(rx_frame, frag);
 				frag = new_frag;
-				rx_pkt_list->buf[tail] = (uint32_t)frag;
+				rx_pkt_list->buf[tail] = (u32_t)frag;
 			}
 		}
 
@@ -556,7 +556,7 @@
 		__DMB();  /* data memory barrier */
 		/* Update buffer descriptor address word */
 		rx_desc->w0 =
-			  ((uint32_t)frag->data & GMAC_RXW0_ADDR)
+			  ((u32_t)frag->data & GMAC_RXW0_ADDR)
 			| (tail == rx_desc_list->len-1 ? GMAC_RXW0_WRAP : 0);
 
 		MODULO_INC(tail, rx_desc_list->len);
@@ -601,9 +601,9 @@
 	struct gmac_desc_list *tx_desc_list = &queue->tx_desc_list;
 	struct gmac_desc *tx_desc;
 	struct net_buf *frag;
-	uint8_t *frag_data;
-	uint16_t frag_len;
-	uint32_t err_tx_flushed_count_at_entry = queue->err_tx_flushed_count;
+	u8_t *frag_data;
+	u16_t frag_len;
+	u32_t err_tx_flushed_count_at_entry = queue->err_tx_flushed_count;
 	unsigned int key;
 
 	__ASSERT(pkt, "buf pointer is NULL");
@@ -642,7 +642,7 @@
 		tx_desc = &tx_desc_list->buf[tx_desc_list->head];
 
 		/* Update buffer descriptor address word */
-		tx_desc->w0 = (uint32_t)frag_data;
+		tx_desc->w0 = (u32_t)frag_data;
 		/* Guarantee that address word is written before the status
 		 * word to avoid race condition.
 		 */
@@ -696,7 +696,7 @@
 	struct eth_sam_dev_data *const dev_data = DEV_DATA(dev);
 	Gmac *gmac = cfg->regs;
 	struct gmac_queue *queue = &dev_data->queue_list[0];
-	uint32_t isr;
+	u32_t isr;
 
 	/* Interrupt Status Register is cleared on read */
 	isr = gmac->GMAC_ISR;
@@ -747,8 +747,8 @@
 	struct device *const dev = net_if_get_device(iface);
 	struct eth_sam_dev_data *const dev_data = DEV_DATA(dev);
 	const struct eth_sam_dev_cfg *const cfg = DEV_CFG(dev);
-	uint32_t gmac_ncfgr_val;
-	uint32_t link_status;
+	u32_t gmac_ncfgr_val;
+	u32_t link_status;
 	int result;
 
 	dev_data->iface = iface;
@@ -845,11 +845,11 @@
 				.len = ARRAY_SIZE(tx_desc_que0),
 			},
 			.rx_pkt_list = {
-				.buf = (uint32_t *)rx_buf_list_que0,
+				.buf = (u32_t *)rx_buf_list_que0,
 				.len = ARRAY_SIZE(rx_buf_list_que0),
 			},
 			.tx_frames = {
-				.buf = (uint32_t *)tx_frame_list_que0,
+				.buf = (u32_t *)tx_frame_list_que0,
 				.len = ARRAY_SIZE(tx_frame_list_que0),
 			},
 		}, {
diff --git a/drivers/ethernet/eth_sam_gmac_priv.h b/drivers/ethernet/eth_sam_gmac_priv.h
index 95d6102..fadec94 100644
--- a/drivers/ethernet/eth_sam_gmac_priv.h
+++ b/drivers/ethernet/eth_sam_gmac_priv.h
@@ -32,9 +32,9 @@
  */
 #if 0
 #define DCACHE_INVALIDATE(addr, size) \
-		SCB_InvalidateDCache_by_Addr((uint32_t *)addr, size)
+		SCB_InvalidateDCache_by_Addr((u32_t *)addr, size)
 #define DCACHE_CLEAN(addr, size) \
-		SCB_CleanDCache_by_Addr((uint32_t *)addr, size)
+		SCB_CleanDCache_by_Addr((u32_t *)addr, size)
 #else
 #define DCACHE_INVALIDATE(addr, size) { ; }
 #define DCACHE_CLEAN(addr, size) { ; }
@@ -126,24 +126,24 @@
 
 /** Minimal ring buffer implementation */
 struct ring_buf {
-	uint32_t *buf;
-	uint16_t len;
-	uint16_t head;
-	uint16_t tail;
+	u32_t *buf;
+	u16_t len;
+	u16_t head;
+	u16_t tail;
 };
 
 /** Receive/transmit buffer descriptor */
 struct gmac_desc {
-	uint32_t w0;
-	uint32_t w1;
+	u32_t w0;
+	u32_t w1;
 };
 
 /** Ring list of receive/transmit buffer descriptors */
 struct gmac_desc_list {
 	struct gmac_desc *buf;
-	uint16_t len;
-	uint16_t head;
-	uint16_t tail;
+	u16_t len;
+	u16_t head;
+	u16_t tail;
 };
 
 /** GMAC Queue data */
@@ -156,11 +156,11 @@
 	struct ring_buf tx_frames;
 
 	/** Number of RX frames dropped by the driver */
-	volatile uint32_t err_rx_frames_dropped;
+	volatile u32_t err_rx_frames_dropped;
 	/** Number of times receive queue was flushed */
-	volatile uint32_t err_rx_flushed_count;
+	volatile u32_t err_rx_flushed_count;
 	/** Number of times transmit queue was flushed */
-	volatile uint32_t err_tx_flushed_count;
+	volatile u32_t err_tx_flushed_count;
 
 	enum queue_idx que_idx;
 };
@@ -168,9 +168,9 @@
 /* Device constant configuration parameters */
 struct eth_sam_dev_cfg {
 	Gmac *regs;
-	uint32_t periph_id;
+	u32_t periph_id;
 	const struct soc_gpio_pin *pin_list;
-	uint32_t pin_list_size;
+	u32_t pin_list_size;
 	void (*config_func)(void);
 	struct phy_sam_gmac_dev phy;
 };
@@ -178,7 +178,7 @@
 /* Device run time data */
 struct eth_sam_dev_data {
 	struct net_if *iface;
-	uint8_t mac_addr[6];
+	u8_t mac_addr[6];
 	struct gmac_queue queue_list[GMAC_QUEUE_NO];
 };
 
diff --git a/drivers/ethernet/phy_sam_gmac.c b/drivers/ethernet/phy_sam_gmac.c
index d2467e4..ebccde1 100644
--- a/drivers/ethernet/phy_sam_gmac.c
+++ b/drivers/ethernet/phy_sam_gmac.c
@@ -37,7 +37,7 @@
 /* Wait PHY operation complete. */
 static int mdio_bus_wait(Gmac *gmac)
 {
-	uint32_t retries = 100;  /* will wait up to 1 s */
+	u32_t retries = 100;  /* will wait up to 1 s */
 
 	while (!(gmac->GMAC_NSR & GMAC_NSR_IDLE))   {
 		if (retries-- == 0) {
@@ -52,8 +52,8 @@
 }
 
 /* Send command to PHY over MDIO serial bus */
-static int mdio_bus_send(Gmac *gmac, uint8_t phy_addr, uint8_t reg_addr,
-			 uint8_t rw, uint16_t data)
+static int mdio_bus_send(Gmac *gmac, u8_t phy_addr, u8_t reg_addr,
+			 u8_t rw, u16_t data)
 {
 	int retval;
 
@@ -75,11 +75,11 @@
 }
 
 /* Read PHY register. */
-static int phy_read(const struct phy_sam_gmac_dev *phy, uint8_t reg_addr,
-		    uint32_t *value)
+static int phy_read(const struct phy_sam_gmac_dev *phy, u8_t reg_addr,
+		    u32_t *value)
 {
 	Gmac *const gmac = phy->regs;
-	uint8_t phy_addr = phy->address;
+	u8_t phy_addr = phy->address;
 	int retval;
 
 	retval = mdio_bus_send(gmac, phy_addr, reg_addr, 1, 0);
@@ -94,11 +94,11 @@
 }
 
 /* Write PHY register. */
-static int phy_write(const struct phy_sam_gmac_dev *phy, uint8_t reg_addr,
-		     uint32_t value)
+static int phy_write(const struct phy_sam_gmac_dev *phy, u8_t reg_addr,
+		     u32_t value)
 {
 	Gmac *const gmac = phy->regs;
-	uint8_t phy_addr = phy->address;
+	u8_t phy_addr = phy->address;
 
 	return mdio_bus_send(gmac, phy_addr, reg_addr, 0, value);
 }
@@ -106,8 +106,8 @@
 /* Issue a PHY soft reset. */
 static int phy_soft_reset(const struct phy_sam_gmac_dev *phy)
 {
-	uint32_t phy_reg;
-	uint32_t retries = 12;
+	u32_t phy_reg;
+	u32_t retries = 12;
 	int retval;
 
 	/* Issue a soft reset */
@@ -160,11 +160,11 @@
 	return 0;
 }
 
-uint32_t phy_sam_gmac_id_get(const struct phy_sam_gmac_dev *phy)
+u32_t phy_sam_gmac_id_get(const struct phy_sam_gmac_dev *phy)
 {
 	Gmac *const gmac = phy->regs;
-	uint32_t phy_reg;
-	uint32_t phy_id;
+	u32_t phy_reg;
+	u32_t phy_id;
 
 	mdio_bus_enable(gmac);
 
@@ -186,13 +186,13 @@
 }
 
 int phy_sam_gmac_auto_negotiate(const struct phy_sam_gmac_dev *phy,
-				uint32_t *status)
+				u32_t *status)
 {
 	Gmac *const gmac = phy->regs;
-	uint32_t val;
-	uint32_t ability_adv;
-	uint32_t ability_rcvd;
-	uint32_t retries = PHY_AUTONEG_TIMEOUT_MS / 100;
+	u32_t val;
+	u32_t ability_adv;
+	u32_t ability_rcvd;
+	u32_t retries = PHY_AUTONEG_TIMEOUT_MS / 100;
 	int retval;
 
 	mdio_bus_enable(gmac);
diff --git a/drivers/ethernet/phy_sam_gmac.h b/drivers/ethernet/phy_sam_gmac.h
index 5c2178e..640edb5 100644
--- a/drivers/ethernet/phy_sam_gmac.h
+++ b/drivers/ethernet/phy_sam_gmac.h
@@ -24,7 +24,7 @@
 
 struct phy_sam_gmac_dev {
 	Gmac *regs;
-	uint8_t address;
+	u8_t address;
 };
 
 /**
@@ -43,7 +43,7 @@
  * @return 0 on success or a negative error value on failure
  */
 int phy_sam_gmac_auto_negotiate(const struct phy_sam_gmac_dev *phy,
-				uint32_t *status);
+				u32_t *status);
 
 /**
  * @brief Get PHY ID value.
@@ -51,7 +51,7 @@
  * @param phy PHY instance
  * @return PHY ID value or 0xFFFFFFFF on failure
  */
-uint32_t phy_sam_gmac_id_get(const struct phy_sam_gmac_dev *phy);
+u32_t phy_sam_gmac_id_get(const struct phy_sam_gmac_dev *phy);
 
 #ifdef __cplusplus
 }
diff --git a/drivers/ieee802154/ieee802154_cc2520.c b/drivers/ieee802154/ieee802154_cc2520.c
index a6eef8c..1696c60 100644
--- a/drivers/ieee802154/ieee802154_cc2520.c
+++ b/drivers/ieee802154/ieee802154_cc2520.c
@@ -78,7 +78,7 @@
 
 static inline void _cc2520_print_exceptions(struct cc2520_context *cc2520)
 {
-	uint8_t flag = read_reg_excflag0(&cc2520->spi);
+	u8_t flag = read_reg_excflag0(&cc2520->spi);
 
 	SYS_LOG_DBG("EXCFLAG0:");
 
@@ -157,7 +157,7 @@
 
 static inline void _cc2520_print_errors(struct cc2520_context *cc2520)
 {
-	uint8_t flag = read_reg_excflag2(&cc2520->spi);
+	u8_t flag = read_reg_excflag2(&cc2520->spi);
 
 	SYS_LOG_DBG("EXCFLAG2:");
 
@@ -203,10 +203,10 @@
  ********************/
 #define _usleep(usec) k_busy_wait(usec)
 
-uint8_t _cc2520_read_reg(struct cc2520_spi *spi,
-			 bool freg, uint8_t addr)
+u8_t _cc2520_read_reg(struct cc2520_spi *spi,
+			 bool freg, u8_t addr)
 {
-	uint8_t len = freg ? 2 : 3;
+	u8_t len = freg ? 2 : 3;
 
 	spi->cmd_buf[0] = freg ? CC2520_INS_REGRD | addr : CC2520_INS_MEMRD;
 	spi->cmd_buf[1] = freg ? 0 : addr;
@@ -223,9 +223,9 @@
 }
 
 bool _cc2520_write_reg(struct cc2520_spi *spi, bool freg,
-		       uint8_t addr, uint8_t value)
+		       u8_t addr, u8_t value)
 {
-	uint8_t len = freg ? 2 : 3;
+	u8_t len = freg ? 2 : 3;
 
 	spi->cmd_buf[0] = freg ? CC2520_INS_REGWR | addr : CC2520_INS_MEMWR;
 	spi->cmd_buf[1] = freg ? value : addr;
@@ -236,13 +236,13 @@
 	return (spi_write(spi->dev, spi->cmd_buf, len) == 0);
 }
 
-bool _cc2520_write_ram(struct cc2520_spi *spi, uint16_t addr,
-		       uint8_t *data_buf, uint8_t len)
+bool _cc2520_write_ram(struct cc2520_spi *spi, u16_t addr,
+		       u8_t *data_buf, u8_t len)
 {
 #ifndef CONFIG_IEEE802154_CC2520_CRYPTO
-	uint8_t *cmd_data = spi->cmd_buf;
+	u8_t *cmd_data = spi->cmd_buf;
 #else
-	uint8_t cmd_data[128];
+	u8_t cmd_data[128];
 #endif
 
 	cmd_data[0] = CC2520_INS_MEMWR | (addr >> 8);
@@ -255,7 +255,7 @@
 	return (spi_write(spi->dev, cmd_data, len + 2) == 0);
 }
 
-static uint8_t _cc2520_status(struct cc2520_spi *spi)
+static u8_t _cc2520_status(struct cc2520_spi *spi)
 {
 	spi->cmd_buf[0] = CC2520_INS_SNOP;
 
@@ -271,8 +271,8 @@
 
 static bool verify_osc_stabilization(struct cc2520_context *cc2520)
 {
-	uint8_t timeout = 100;
-	uint8_t status;
+	u8_t timeout = 100;
+	u8_t status;
 
 	do {
 		status = _cc2520_status(&cc2520->spi);
@@ -284,12 +284,12 @@
 }
 
 
-static inline uint8_t *get_mac(struct device *dev)
+static inline u8_t *get_mac(struct device *dev)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
 #if defined(CONFIG_IEEE802154_CC2520_RANDOM_MAC)
-	uint32_t *ptr = (uint32_t *)(cc2520->mac_addr + 4);
+	u32_t *ptr = (u32_t *)(cc2520->mac_addr + 4);
 
 	UNALIGNED_PUT(sys_rand32_get(), ptr);
 
@@ -312,7 +312,7 @@
 /******************
  * GPIO functions *
  *****************/
-static inline void set_reset(struct device *dev, uint32_t value)
+static inline void set_reset(struct device *dev, u32_t value)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
@@ -320,7 +320,7 @@
 		       cc2520->gpios[CC2520_GPIO_IDX_RESET].pin, value);
 }
 
-static inline void set_vreg_en(struct device *dev, uint32_t value)
+static inline void set_vreg_en(struct device *dev, u32_t value)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
@@ -328,9 +328,9 @@
 		       cc2520->gpios[CC2520_GPIO_IDX_VREG_EN].pin, value);
 }
 
-static inline uint32_t get_fifo(struct cc2520_context *cc2520)
+static inline u32_t get_fifo(struct cc2520_context *cc2520)
 {
-	uint32_t pin_value;
+	u32_t pin_value;
 
 	gpio_pin_read(cc2520->gpios[CC2520_GPIO_IDX_FIFO].dev,
 		      cc2520->gpios[CC2520_GPIO_IDX_FIFO].pin, &pin_value);
@@ -338,9 +338,9 @@
 	return pin_value;
 }
 
-static inline uint32_t get_fifop(struct cc2520_context *cc2520)
+static inline u32_t get_fifop(struct cc2520_context *cc2520)
 {
-	uint32_t pin_value;
+	u32_t pin_value;
 
 	gpio_pin_read(cc2520->gpios[CC2520_GPIO_IDX_FIFOP].dev,
 		      cc2520->gpios[CC2520_GPIO_IDX_FIFOP].pin, &pin_value);
@@ -348,9 +348,9 @@
 	return pin_value;
 }
 
-static inline uint32_t get_cca(struct cc2520_context *cc2520)
+static inline u32_t get_cca(struct cc2520_context *cc2520)
 {
-	uint32_t pin_value;
+	u32_t pin_value;
 
 	gpio_pin_read(cc2520->gpios[CC2520_GPIO_IDX_CCA].dev,
 		      cc2520->gpios[CC2520_GPIO_IDX_CCA].pin, &pin_value);
@@ -359,7 +359,7 @@
 }
 
 static inline void sfd_int_handler(struct device *port,
-				   struct gpio_callback *cb, uint32_t pins)
+				   struct gpio_callback *cb, u32_t pins)
 {
 	struct cc2520_context *cc2520 =
 		CONTAINER_OF(cb, struct cc2520_context, sfd_cb);
@@ -371,7 +371,7 @@
 }
 
 static inline void fifop_int_handler(struct device *port,
-				     struct gpio_callback *cb, uint32_t pins)
+				     struct gpio_callback *cb, u32_t pins)
 {
 	struct cc2520_context *cc2520 =
 		CONTAINER_OF(cb, struct cc2520_context, fifop_cb);
@@ -436,7 +436,7 @@
  * TX functions *
  ***************/
 static inline bool write_txfifo_length(struct cc2520_spi *spi,
-				       uint8_t len)
+				       u8_t len)
 {
 	spi->cmd_buf[0] = CC2520_INS_TXBUF;
 	spi->cmd_buf[1] = len + CC2520_FCS_LENGTH;
@@ -447,9 +447,9 @@
 }
 
 static inline bool write_txfifo_content(struct cc2520_spi *spi,
-					uint8_t *frame, uint8_t len)
+					u8_t *frame, u8_t len)
 {
-	uint8_t cmd[128];
+	u8_t cmd[128];
 
 	cmd[0] = CC2520_INS_TXBUF;
 	memcpy(&cmd[1], frame, len);
@@ -460,7 +460,7 @@
 }
 
 static inline bool verify_txfifo_status(struct cc2520_context *cc2520,
-					uint8_t len)
+					u8_t len)
 {
 	if (read_reg_txfifocnt(&cc2520->spi) < len ||
 	    (read_reg_excflag0(&cc2520->spi) & EXCFLAG0_TX_UNDERFLOW)) {
@@ -472,8 +472,8 @@
 
 static inline bool verify_tx_done(struct cc2520_context *cc2520)
 {
-	uint8_t timeout = 10;
-	uint8_t status;
+	u8_t timeout = 10;
+	u8_t status;
 
 	do {
 		_usleep(1);
@@ -501,7 +501,7 @@
 	write_reg_excflag0(&cc2520->spi, EXCFLAG0_RESET_RX_FLAGS);
 }
 
-static inline uint8_t read_rxfifo_length(struct cc2520_spi *spi)
+static inline u8_t read_rxfifo_length(struct cc2520_spi *spi)
 {
 	spi->cmd_buf[0] = CC2520_INS_RXBUF;
 	spi->cmd_buf[1] = 0;
@@ -517,9 +517,9 @@
 }
 
 static inline bool read_rxfifo_content(struct cc2520_spi *spi,
-				       struct net_buf *frag, uint8_t len)
+				       struct net_buf *frag, u8_t len)
 {
-	uint8_t data[128+1];
+	u8_t data[128+1];
 
 	data[0] = CC2520_INS_RXBUF;
 	memset(&data[1], 0, len);
@@ -584,7 +584,7 @@
 }
 
 static inline bool verify_rxfifo_validity(struct cc2520_spi *spi,
-					  uint8_t pkt_len)
+					  u8_t pkt_len)
 {
 	if (pkt_len < 2 || read_reg_rxfifocnt(spi) != pkt_len) {
 		return false;
@@ -599,7 +599,7 @@
 	struct cc2520_context *cc2520 = dev->driver_data;
 	struct net_buf *pkt_frag = NULL;
 	struct net_pkt *pkt;
-	uint8_t pkt_len;
+	u8_t pkt_len;
 
 	while (1) {
 		pkt = NULL;
@@ -717,7 +717,7 @@
 	return 0;
 }
 
-static int cc2520_set_channel(struct device *dev, uint16_t channel)
+static int cc2520_set_channel(struct device *dev, u16_t channel)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
@@ -738,7 +738,7 @@
 	return 0;
 }
 
-static int cc2520_set_pan_id(struct device *dev, uint16_t pan_id)
+static int cc2520_set_pan_id(struct device *dev, u16_t pan_id)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
@@ -746,7 +746,7 @@
 
 	pan_id = sys_le16_to_cpu(pan_id);
 
-	if (!write_mem_pan_id(&cc2520->spi, (uint8_t *) &pan_id)) {
+	if (!write_mem_pan_id(&cc2520->spi, (u8_t *) &pan_id)) {
 		SYS_LOG_ERR("Failed");
 		return -EIO;
 	}
@@ -754,7 +754,7 @@
 	return 0;
 }
 
-static int cc2520_set_short_addr(struct device *dev, uint16_t short_addr)
+static int cc2520_set_short_addr(struct device *dev, u16_t short_addr)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
@@ -762,7 +762,7 @@
 
 	short_addr = sys_le16_to_cpu(short_addr);
 
-	if (!write_mem_short_addr(&cc2520->spi, (uint8_t *) &short_addr)) {
+	if (!write_mem_short_addr(&cc2520->spi, (u8_t *) &short_addr)) {
 		SYS_LOG_ERR("Failed");
 		return -EIO;
 	}
@@ -770,7 +770,7 @@
 	return 0;
 }
 
-static int cc2520_set_ieee_addr(struct device *dev, const uint8_t *ieee_addr)
+static int cc2520_set_ieee_addr(struct device *dev, const u8_t *ieee_addr)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
@@ -786,10 +786,10 @@
 	return 0;
 }
 
-static int cc2520_set_txpower(struct device *dev, int16_t dbm)
+static int cc2520_set_txpower(struct device *dev, s16_t dbm)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
-	uint8_t pwr;
+	u8_t pwr;
 
 	SYS_LOG_DBG("%d", dbm);
 
@@ -840,10 +840,10 @@
 		     struct net_pkt *pkt,
 		     struct net_buf *frag)
 {
-	uint8_t *frame = frag->data - net_pkt_ll_reserve(pkt);
-	uint8_t len = net_pkt_ll_reserve(pkt) + frag->len;
+	u8_t *frame = frag->data - net_pkt_ll_reserve(pkt);
+	u8_t len = net_pkt_ll_reserve(pkt) + frag->len;
 	struct cc2520_context *cc2520 = dev->driver_data;
-	uint8_t retry = 2;
+	u8_t retry = 2;
 	bool status;
 
 	SYS_LOG_DBG("%p (%u)", frag, len);
@@ -943,7 +943,7 @@
 	return 0;
 }
 
-static uint8_t cc2520_get_lqi(struct device *dev)
+static u8_t cc2520_get_lqi(struct device *dev)
 {
 	struct cc2520_context *cc2520 = dev->driver_data;
 
@@ -1090,7 +1090,7 @@
 {
 	struct device *dev = net_if_get_device(iface);
 	struct cc2520_context *cc2520 = dev->driver_data;
-	uint8_t *mac = get_mac(dev);
+	u8_t *mac = get_mac(dev);
 
 	SYS_LOG_DBG("");
 
@@ -1142,10 +1142,10 @@
 
 #ifdef CONFIG_IEEE802154_CC2520_CRYPTO
 
-static bool _cc2520_read_ram(struct cc2520_spi *spi, uint16_t addr,
-			     uint8_t *data_buf, uint8_t len)
+static bool _cc2520_read_ram(struct cc2520_spi *spi, u16_t addr,
+			     u8_t *data_buf, u8_t len)
 {
-	uint8_t cmd_buf[128];
+	u8_t cmd_buf[128];
 
 	cmd_buf[0] = CC2520_INS_MEMRD | (addr >> 8);
 	cmd_buf[1] = addr;
@@ -1163,15 +1163,15 @@
 }
 
 static inline bool instruct_ccm(struct cc2520_context *cc2520,
-				uint8_t key_addr,
-				uint8_t auth_crypt,
-				uint8_t nonce_addr,
-				uint16_t input_addr,
-				uint16_t output_addr,
-				uint8_t in_len,
-				uint8_t m)
+				u8_t key_addr,
+				u8_t auth_crypt,
+				u8_t nonce_addr,
+				u16_t input_addr,
+				u16_t output_addr,
+				u8_t in_len,
+				u8_t m)
 {
-	uint8_t cmd[9];
+	u8_t cmd[9];
 	int ret;
 
 	SYS_LOG_DBG("CCM(P={01} K={%02x} C={%02x} N={%02x}"
@@ -1183,10 +1183,10 @@
 	cmd[1] = key_addr;
 	cmd[2] = (auth_crypt & 0x7f);
 	cmd[3] = nonce_addr;
-	cmd[4] = (uint8_t)(((input_addr & 0x0f00) >> 4) |
+	cmd[4] = (u8_t)(((input_addr & 0x0f00) >> 4) |
 			   ((output_addr & 0x0f00) >> 8));
-	cmd[5] = (uint8_t)(input_addr & 0x00ff);
-	cmd[6] = (uint8_t)(output_addr & 0x00ff);
+	cmd[5] = (u8_t)(input_addr & 0x00ff);
+	cmd[6] = (u8_t)(output_addr & 0x00ff);
 	cmd[7] = (in_len & 0x7f);
 	cmd[8] = (m & 0x03);
 
@@ -1205,15 +1205,15 @@
 }
 
 static inline bool instruct_uccm(struct cc2520_context *cc2520,
-				 uint8_t key_addr,
-				 uint8_t auth_crypt,
-				 uint8_t nonce_addr,
-				 uint16_t input_addr,
-				 uint16_t output_addr,
-				 uint8_t in_len,
-				 uint8_t m)
+				 u8_t key_addr,
+				 u8_t auth_crypt,
+				 u8_t nonce_addr,
+				 u16_t input_addr,
+				 u16_t output_addr,
+				 u8_t in_len,
+				 u8_t m)
 {
-	uint8_t cmd[9];
+	u8_t cmd[9];
 	int ret;
 
 	SYS_LOG_DBG("UCCM(P={01} K={%02x} C={%02x} N={%02x}"
@@ -1225,10 +1225,10 @@
 	cmd[1] = key_addr;
 	cmd[2] = (auth_crypt & 0x7f);
 	cmd[3] = nonce_addr;
-	cmd[4] = (uint8_t)(((input_addr & 0x0f00) >> 4) |
+	cmd[4] = (u8_t)(((input_addr & 0x0f00) >> 4) |
 			   ((output_addr & 0x0f00) >> 8));
-	cmd[5] = (uint8_t)(input_addr & 0x00ff);
-	cmd[6] = (uint8_t)(output_addr & 0x00ff);
+	cmd[5] = (u8_t)(input_addr & 0x00ff);
+	cmd[6] = (u8_t)(output_addr & 0x00ff);
 	cmd[7] = (in_len & 0x7f);
 	cmd[8] = (m & 0x03);
 
@@ -1246,15 +1246,15 @@
 	return true;
 }
 
-static inline void generate_nonce(uint8_t *ccm_nonce, uint8_t *nonce,
-				  struct cipher_aead_pkt *apkt, uint8_t m)
+static inline void generate_nonce(u8_t *ccm_nonce, u8_t *nonce,
+				  struct cipher_aead_pkt *apkt, u8_t m)
 {
 	nonce[0] = 0 | (apkt->ad_len ? 0x40 : 0) | (m << 3) | 1;
 
 	memcpy(&nonce[1], ccm_nonce, 13);
 
-	nonce[14] = (uint8_t)(apkt->pkt->in_len >> 8);
-	nonce[15] = (uint8_t)(apkt->pkt->in_len);
+	nonce[14] = (u8_t)(apkt->pkt->in_len >> 8);
+	nonce[15] = (u8_t)(apkt->pkt->in_len);
 
 	/* See section 26.8.1 */
 	sys_mem_swap(nonce, 16);
@@ -1262,13 +1262,13 @@
 
 static int insert_crypto_parameters(struct cipher_ctx *ctx,
 				    struct cipher_aead_pkt *apkt,
-				    uint8_t *ccm_nonce, uint8_t *auth_crypt)
+				    u8_t *ccm_nonce, u8_t *auth_crypt)
 {
 	struct cc2520_context *cc2520 = ctx->device->driver_data;
-	uint8_t data[128];
-	uint8_t *in_buf;
-	uint8_t in_len;
-	uint8_t m = 0;
+	u8_t data[128];
+	u8_t *in_buf;
+	u8_t in_len;
+	u8_t m = 0;
 
 	if (!apkt->pkt->out_buf || !apkt->pkt->out_buf_max) {
 		SYS_LOG_ERR("Out buffer needs to be set");
@@ -1353,10 +1353,10 @@
 
 static int _cc2520_crypto_ccm(struct cipher_ctx *ctx,
 			      struct cipher_aead_pkt *apkt,
-			      uint8_t *ccm_nonce)
+			      u8_t *ccm_nonce)
 {
 	struct cc2520_context *cc2520 = ctx->device->driver_data;
-	uint8_t auth_crypt;
+	u8_t auth_crypt;
 	int m;
 
 	if (!apkt || !apkt->pkt) {
@@ -1400,10 +1400,10 @@
 
 static int _cc2520_crypto_uccm(struct cipher_ctx *ctx,
 			       struct cipher_aead_pkt *apkt,
-			       uint8_t *ccm_nonce)
+			       u8_t *ccm_nonce)
 {
 	struct cc2520_context *cc2520 = ctx->device->driver_data;
-	uint8_t auth_crypt;
+	u8_t auth_crypt;
 	int m;
 
 	if (!apkt || !apkt->pkt) {
diff --git a/drivers/ieee802154/ieee802154_cc2520.h b/drivers/ieee802154/ieee802154_cc2520.h
index 8311cbe..755f9dc 100644
--- a/drivers/ieee802154/ieee802154_cc2520.h
+++ b/drivers/ieee802154/ieee802154_cc2520.h
@@ -20,12 +20,12 @@
  */
 struct cc2520_spi {
 	struct device *dev;
-	uint32_t slave;
+	u32_t slave;
 	/**
 	 * cmd_buf will use at most 9 bytes:
 	 * dummy bytes + 8 ieee address bytes
 	 */
-	uint8_t cmd_buf[12];
+	u8_t cmd_buf[12];
 };
 
 struct cc2520_context {
@@ -35,7 +35,7 @@
 	struct gpio_callback sfd_cb;
 	struct gpio_callback fifop_cb;
 	struct cc2520_spi spi;
-	uint8_t mac_addr[8];
+	u8_t mac_addr[8];
 	/************TX************/
 	struct k_sem tx_sync;
 	atomic_t tx;
@@ -46,7 +46,7 @@
 	struct k_sem access_lock;
 #endif
 	bool overflow;
-	uint8_t lqi;
+	u8_t lqi;
 };
 
 #include "ieee802154_cc2520_regs.h"
@@ -56,20 +56,20 @@
  ***************************
  */
 
-uint8_t _cc2520_read_reg(struct cc2520_spi *spi,
-			 bool freg, uint8_t addr);
+u8_t _cc2520_read_reg(struct cc2520_spi *spi,
+			 bool freg, u8_t addr);
 bool _cc2520_write_reg(struct cc2520_spi *spi, bool freg,
-		       uint8_t addr, uint8_t value);
+		       u8_t addr, u8_t value);
 
 #define DEFINE_REG_READ(__reg_name, __reg_addr, __freg)			\
-	static inline uint8_t read_reg_##__reg_name(struct cc2520_spi *spi) \
+	static inline u8_t read_reg_##__reg_name(struct cc2520_spi *spi) \
 	{								\
 		return _cc2520_read_reg(spi, __freg, __reg_addr);	\
 	}
 
 #define DEFINE_REG_WRITE(__reg_name, __reg_addr, __freg)		\
 	static inline bool write_reg_##__reg_name(struct cc2520_spi *spi, \
-						  uint8_t val)		\
+						  u8_t val)		\
 	{								\
 		return _cc2520_write_reg(spi, __freg, __reg_addr, val);	\
 	}
@@ -128,12 +128,12 @@
  ************************
  */
 
-bool _cc2520_write_ram(struct cc2520_spi *spi, uint16_t addr,
-		       uint8_t *data_buf, uint8_t len);
+bool _cc2520_write_ram(struct cc2520_spi *spi, u16_t addr,
+		       u8_t *data_buf, u8_t len);
 
 #define DEFINE_MEM_WRITE(__mem_name, __addr, __sz)			\
 	static inline bool write_mem_##__mem_name(struct cc2520_spi *spi, \
-						  uint8_t *buf)		\
+						  u8_t *buf)		\
 	{								\
 		return _cc2520_write_ram(spi, __addr, buf, __sz);	\
 	}
@@ -148,7 +148,7 @@
  */
 
 static inline bool _cc2520_command_strobe(struct cc2520_spi *spi,
-					  uint8_t instruction)
+					  u8_t instruction)
 {
 	spi_slave_select(spi->dev, spi->slave);
 
@@ -156,9 +156,9 @@
 }
 
 static inline bool _cc2520_command_strobe_snop(struct cc2520_spi *spi,
-					       uint8_t instruction)
+					       u8_t instruction)
 {
-	uint8_t ins[2] = {
+	u8_t ins[2] = {
 		instruction,
 		CC2520_INS_SNOP
 	};
diff --git a/drivers/ieee802154/ieee802154_cc2520_regs.h b/drivers/ieee802154/ieee802154_cc2520_regs.h
index f312e08..6a67bde 100644
--- a/drivers/ieee802154/ieee802154_cc2520_regs.h
+++ b/drivers/ieee802154/ieee802154_cc2520_regs.h
@@ -111,12 +111,12 @@
 #define EXCFLAG0_RX_UNDERFLOW			BIT(5)
 #define EXCFLAG0_RX_OVERFLOW			BIT(6)
 #define EXCFLAG0_RXENABLE_ZERO			BIT(7)
-#define EXCFLAG0_RESET_TX_FLAGS			((uint8_t) \
+#define EXCFLAG0_RESET_TX_FLAGS			((u8_t) \
 						 ~(EXCFLAG0_TX_FRM_DONE | \
 						   EXCFLAG0_TX_ACK_DONE | \
 						   EXCFLAG0_TX_UNDERFLOW | \
 						   EXCFLAG0_TX_OVERFLOW))
-#define EXCFLAG0_RESET_RX_FLAGS			((uint8_t) \
+#define EXCFLAG0_RESET_RX_FLAGS			((u8_t) \
 						 ~(EXCFLAG0_RX_UNDERFLOW | \
 						   EXCFLAG0_RX_OVERFLOW | \
 						   EXCFLAG0_RXENABLE_ZERO))
@@ -130,7 +130,7 @@
 #define EXCFLAG1_SFD				BIT(5)
 #define EXCFLAG1_DPU_DONE_L			BIT(6)
 #define EXCFLAG1_DPU_DONE_H			BIT(7)
-#define EXCFLAG1_RESET_RX_FLAGS			((uint8_t) \
+#define EXCFLAG1_RESET_RX_FLAGS			((u8_t) \
 						 ~(EXCFLAG1_RX_FRM_DONE | \
 						   EXCFLAG1_RX_FRM_ACCEPTED | \
 						   EXCFLAG1_FIFOP))
diff --git a/drivers/ieee802154/ieee802154_mcr20a.c b/drivers/ieee802154/ieee802154_mcr20a.c
index fbac7b8..7ab2eca 100644
--- a/drivers/ieee802154/ieee802154_mcr20a.c
+++ b/drivers/ieee802154/ieee802154_mcr20a.c
@@ -105,7 +105,7 @@
 #define MCR20A_OUTPUT_POWER_MIN	(-35)
 
 /* Lookup table for the Power Control register */
-static const uint8_t pow_lt[44] = {
+static const u8_t pow_lt[44] = {
 	3, 4, 5, 6,
 	6, 7, 7, 8,
 	8, 9, 9, 10,
@@ -127,14 +127,14 @@
  * F = ((PLL_INT0 + 64) + (PLL_FRAC0/65536))32MHz
  *
  */
-static const uint8_t pll_int_lt[16] = {
+static const u8_t pll_int_lt[16] = {
 	11, 11, 11, 11,
 	11, 11, 12, 12,
 	12, 12, 12, 12,
 	13, 13, 13, 13
 };
 
-static const uint16_t pll_frac_lt[16] = {
+static const u16_t pll_frac_lt[16] = {
 	10240, 20480, 30720, 40960,
 	51200, 61440, 6144, 16384,
 	26624, 36864, 47104, 57344,
@@ -144,9 +144,9 @@
 #define _usleep(usec) k_busy_wait(usec)
 
 /* Read direct (dreg is true) or indirect register (dreg is false) */
-uint8_t _mcr20a_read_reg(struct mcr20a_spi *spi, bool dreg, uint8_t addr)
+u8_t _mcr20a_read_reg(struct mcr20a_spi *spi, bool dreg, u8_t addr)
 {
-	uint8_t len = dreg ? 2 : 3;
+	u8_t len = dreg ? 2 : 3;
 
 	k_sem_take(&spi->spi_sem, K_FOREVER);
 
@@ -169,10 +169,10 @@
 }
 
 /* Write direct (dreg is true) or indirect register (dreg is false) */
-bool _mcr20a_write_reg(struct mcr20a_spi *spi, bool dreg, uint8_t addr,
-		       uint8_t value)
+bool _mcr20a_write_reg(struct mcr20a_spi *spi, bool dreg, u8_t addr,
+		       u8_t value)
 {
-	uint8_t len = dreg ? 2 : 3;
+	u8_t len = dreg ? 2 : 3;
 	bool retval;
 
 	k_sem_take(&spi->spi_sem, K_FOREVER);
@@ -191,8 +191,8 @@
 }
 
 /* Write multiple bytes to direct or indirect register */
-bool _mcr20a_write_burst(struct mcr20a_spi *spi, bool dreg, uint16_t addr,
-			 uint8_t *data_buf, uint8_t len)
+bool _mcr20a_write_burst(struct mcr20a_spi *spi, bool dreg, u16_t addr,
+			 u8_t *data_buf, u8_t len)
 {
 	bool retval;
 
@@ -222,8 +222,8 @@
 }
 
 /* Read multiple bytes from direct or indirect register */
-bool _mcr20a_read_burst(struct mcr20a_spi *spi, bool dreg, uint16_t addr,
-			uint8_t *data_buf, uint8_t len)
+bool _mcr20a_read_burst(struct mcr20a_spi *spi, bool dreg, u16_t addr,
+			u8_t *data_buf, u8_t len)
 {
 	k_sem_take(&spi->spi_sem, K_FOREVER);
 
@@ -262,7 +262,7 @@
 /* Mask (msk is true) or unmask all interrupts from asserting IRQ_B */
 static bool mcr20a_mask_irqb(struct mcr20a_context *dev, bool msk)
 {
-	uint8_t ctrl4 = read_reg_phy_ctrl4(&dev->spi);
+	u8_t ctrl4 = read_reg_phy_ctrl4(&dev->spi);
 
 	if (msk) {
 		ctrl4 |= MCR20A_PHY_CTRL4_TRCV_MSK;
@@ -275,14 +275,14 @@
 
 /** Set an timeout value for the given compare register */
 static int mcr20a_timer_set(struct mcr20a_context *mcr20a,
-			    uint8_t cmp_reg,
-			    uint32_t timeout)
+			    u8_t cmp_reg,
+			    u32_t timeout)
 {
-	uint32_t now = 0;
-	uint32_t next;
+	u32_t now = 0;
+	u32_t next;
 	bool retval;
 
-	if (!read_burst_event_timer(&mcr20a->spi, (uint8_t *)&now)) {
+	if (!read_burst_event_timer(&mcr20a->spi, (u8_t *)&now)) {
 		goto error;
 	}
 
@@ -293,16 +293,16 @@
 
 	switch (cmp_reg) {
 	case 1:
-		retval = write_burst_t1cmp(&mcr20a->spi, (uint8_t *)&next);
+		retval = write_burst_t1cmp(&mcr20a->spi, (u8_t *)&next);
 		break;
 	case 2:
-		retval = write_burst_t2cmp(&mcr20a->spi, (uint8_t *)&next);
+		retval = write_burst_t2cmp(&mcr20a->spi, (u8_t *)&next);
 		break;
 	case 3:
-		retval = write_burst_t3cmp(&mcr20a->spi, (uint8_t *)&next);
+		retval = write_burst_t3cmp(&mcr20a->spi, (u8_t *)&next);
 		break;
 	case 4:
-		retval = write_burst_t4cmp(&mcr20a->spi, (uint8_t *)&next);
+		retval = write_burst_t4cmp(&mcr20a->spi, (u8_t *)&next);
 		break;
 	default:
 		goto error;
@@ -319,11 +319,11 @@
 	return -EIO;
 }
 
-static int mcr20a_timer_init(struct device *dev, uint8_t tb)
+static int mcr20a_timer_init(struct device *dev, u8_t tb)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t buf[3] = {0, 0, 0};
-	uint8_t ctrl4;
+	u8_t buf[3] = {0, 0, 0};
+	u8_t ctrl4;
 
 	if (!write_reg_tmr_prescale(&mcr20a->spi,
 				    set_bits_tmr_prescale(tb))) {
@@ -350,10 +350,10 @@
 
 /* Set Timer Comparator 4 */
 static int mcr20a_t4cmp_set(struct mcr20a_context *mcr20a,
-			    uint32_t timeout)
+			    u32_t timeout)
 {
-	uint8_t irqsts3;
-	uint8_t ctrl3;
+	u8_t irqsts3;
+	u8_t ctrl3;
 
 	if (mcr20a_timer_set(mcr20a, 4, timeout)) {
 		goto error;
@@ -383,8 +383,8 @@
 /* Clear Timer Comparator 4 */
 static int mcr20a_t4cmp_clear(struct mcr20a_context *mcr20a)
 {
-	uint8_t irqsts3;
-	uint8_t ctrl3;
+	u8_t irqsts3;
+	u8_t ctrl3;
 
 	ctrl3 = read_reg_phy_ctrl3(&mcr20a->spi);
 	ctrl3 &= ~MCR20A_PHY_CTRL3_TMR4CMP_EN;
@@ -407,8 +407,8 @@
 
 static inline void _xcvseq_wait_until_idle(struct mcr20a_context *mcr20a)
 {
-	uint8_t state;
-	uint8_t retries = MCR20A_GET_SEQ_STATE_RETRIES;
+	u8_t state;
+	u8_t retries = MCR20A_GET_SEQ_STATE_RETRIES;
 
 	do {
 		state = read_reg_seq_state(&mcr20a->spi);
@@ -423,7 +423,7 @@
 static inline int mcr20a_abort_sequence(struct mcr20a_context *mcr20a,
 					bool force)
 {
-	uint8_t ctrl1;
+	u8_t ctrl1;
 
 	ctrl1 = read_reg_phy_ctrl1(&mcr20a->spi);
 	SYS_LOG_DBG("CTRL1 0x%02x", ctrl1);
@@ -453,9 +453,9 @@
 
 /* Initiate a (new) Transceiver Sequence */
 static inline int mcr20a_set_sequence(struct mcr20a_context *mcr20a,
-				      uint8_t seq)
+				      u8_t seq)
 {
-	uint8_t ctrl1 = 0;
+	u8_t ctrl1 = 0;
 
 	seq = set_bits_phy_ctrl1_xcvseq(seq);
 	ctrl1 = read_reg_phy_ctrl1(&mcr20a->spi);
@@ -476,7 +476,7 @@
 	return 0;
 }
 
-static inline uint32_t mcr20a_get_rssi(uint32_t lqi)
+static inline u32_t mcr20a_get_rssi(u32_t lqi)
 {
 	/* Get rssi (Received Signal Strength Indicator, unit is dBm)
 	 * from lqi (Link Quality Indicator) value.
@@ -489,19 +489,19 @@
 	 * -RF * 65536 = (LQI / 2.84 - 295.4 / 2.84) * 65536
 	 * RF * 65536 = (295.4 * 65536 / 2.84) - (LQI * 65536 / 2.84)
 	 */
-	uint32_t a = (uint32_t)(295.4 * 65536 / 2.84);
-	uint32_t b = (uint32_t)(65536 / 2.84);
+	u32_t a = (u32_t)(295.4 * 65536 / 2.84);
+	u32_t b = (u32_t)(65536 / 2.84);
 
 	return (a - (b * lqi)) >> 16;
 }
 
-static inline uint8_t *get_mac(struct device *dev)
+static inline u8_t *get_mac(struct device *dev)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint32_t *ptr = (uint32_t *)(mcr20a->mac_addr);
+	u32_t *ptr = (u32_t *)(mcr20a->mac_addr);
 
 	UNALIGNED_PUT(sys_rand32_get(), ptr);
-	ptr = (uint32_t *)(mcr20a->mac_addr + 4);
+	ptr = (u32_t *)(mcr20a->mac_addr + 4);
 	UNALIGNED_PUT(sys_rand32_get(), ptr);
 
 	mcr20a->mac_addr[0] = (mcr20a->mac_addr[0] & ~0x01) | 0x02;
@@ -510,9 +510,9 @@
 }
 
 static inline bool read_rxfifo_content(struct mcr20a_spi *spi,
-				       struct net_buf *buf, uint8_t len)
+				       struct net_buf *buf, u8_t len)
 {
-	uint8_t data[1 + MCR20A_PSDU_LENGTH];
+	u8_t data[1 + MCR20A_PSDU_LENGTH];
 
 	if (len  > MCR20A_PSDU_LENGTH) {
 		SYS_LOG_ERR("Packet length too large");
@@ -537,11 +537,11 @@
 	return true;
 }
 
-static inline void mcr20a_rx(struct mcr20a_context *mcr20a, uint8_t len)
+static inline void mcr20a_rx(struct mcr20a_context *mcr20a, u8_t len)
 {
 	struct net_pkt *pkt = NULL;
 	struct net_buf *frag;
-	uint8_t pkt_len;
+	u8_t pkt_len;
 
 	pkt_len = len - MCR20A_FCS_LENGTH;
 
@@ -607,10 +607,10 @@
  * when a sequence has been completed.
  */
 static inline bool _irqsts1_event(struct mcr20a_context *mcr20a,
-				  uint8_t *dregs)
+				  u8_t *dregs)
 {
-	uint8_t seq = dregs[MCR20A_PHY_CTRL1] & MCR20A_PHY_CTRL1_XCVSEQ_MASK;
-	uint8_t new_seq = MCR20A_XCVSEQ_RECEIVE;
+	u8_t seq = dregs[MCR20A_PHY_CTRL1] & MCR20A_PHY_CTRL1_XCVSEQ_MASK;
+	u8_t new_seq = MCR20A_XCVSEQ_RECEIVE;
 	bool retval = false;
 
 	switch (seq) {
@@ -694,7 +694,7 @@
  * usually the TR.
  */
 static inline bool _irqsts3_event(struct mcr20a_context *mcr20a,
-				  uint8_t *dregs)
+				  u8_t *dregs)
 {
 	bool retval = false;
 
@@ -724,9 +724,9 @@
 {
 	struct device *dev = (struct device *)arg;
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t dregs[MCR20A_PHY_CTRL4 + 1];
+	u8_t dregs[MCR20A_PHY_CTRL4 + 1];
 	bool set_new_seq;
-	uint8_t ctrl1 = 0;
+	u8_t ctrl1 = 0;
 
 	while (true) {
 		k_sem_take(&mcr20a->isr_sem, K_FOREVER);
@@ -796,7 +796,7 @@
 }
 
 static inline void irqb_int_handler(struct device *port,
-				    struct gpio_callback *cb, uint32_t pins)
+				    struct gpio_callback *cb, u32_t pins)
 {
 	struct mcr20a_context *mcr20a = CONTAINER_OF(cb,
 						     struct mcr20a_context,
@@ -804,7 +804,7 @@
 	k_sem_give(&mcr20a->isr_sem);
 }
 
-static inline void set_reset(struct device *dev, uint32_t value)
+static inline void set_reset(struct device *dev, u32_t value)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
 
@@ -832,10 +832,10 @@
 	gpio_add_callback(mcr20a->irq_gpio, &mcr20a->irqb_cb);
 }
 
-static int mcr20a_set_cca_mode(struct device *dev, uint8_t mode)
+static int mcr20a_set_cca_mode(struct device *dev, u8_t mode)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t ctrl4;
+	u8_t ctrl4;
 
 	ctrl4 = read_reg_phy_ctrl4(&mcr20a->spi);
 	ctrl4 &= ~MCR20A_PHY_CTRL4_CCATYPE_MASK;
@@ -891,11 +891,11 @@
 	return -EIO;
 }
 
-static int mcr20a_set_channel(struct device *dev, uint16_t channel)
+static int mcr20a_set_channel(struct device *dev, u16_t channel)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t buf[3];
-	uint8_t ctrl1;
+	u8_t buf[3];
+	u8_t ctrl1;
 	int retval = -EIO;
 
 	if (channel < 11 || channel > 26) {
@@ -920,8 +920,8 @@
 	SYS_LOG_DBG("%u", channel);
 	channel -= 11;
 	buf[0] = set_bits_pll_int0_val(pll_int_lt[channel]);
-	buf[1] = (uint8_t)pll_frac_lt[channel];
-	buf[2] = (uint8_t)(pll_frac_lt[channel] >> 8);
+	buf[1] = (u8_t)pll_frac_lt[channel];
+	buf[2] = (u8_t)(pll_frac_lt[channel] >> 8);
 
 	if (!write_burst_pll_int0(&mcr20a->spi, buf)) {
 		SYS_LOG_ERR("Failed to set PLL");
@@ -946,14 +946,14 @@
 	return retval;
 }
 
-static int mcr20a_set_pan_id(struct device *dev, uint16_t pan_id)
+static int mcr20a_set_pan_id(struct device *dev, u16_t pan_id)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
 
 	pan_id = sys_le16_to_cpu(pan_id);
 	k_mutex_lock(&mcr20a->phy_mutex, K_FOREVER);
 
-	if (!write_burst_pan_id(&mcr20a->spi, (uint8_t *) &pan_id)) {
+	if (!write_burst_pan_id(&mcr20a->spi, (u8_t *) &pan_id)) {
 		SYS_LOG_ERR("FAILED");
 		return -EIO;
 	}
@@ -964,14 +964,14 @@
 	return 0;
 }
 
-static int mcr20a_set_short_addr(struct device *dev, uint16_t short_addr)
+static int mcr20a_set_short_addr(struct device *dev, u16_t short_addr)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
 
 	short_addr = sys_le16_to_cpu(short_addr);
 	k_mutex_lock(&mcr20a->phy_mutex, K_FOREVER);
 
-	if (!write_burst_short_addr(&mcr20a->spi, (uint8_t *) &short_addr)) {
+	if (!write_burst_short_addr(&mcr20a->spi, (u8_t *) &short_addr)) {
 		SYS_LOG_ERR("FAILED");
 		return -EIO;
 	}
@@ -982,7 +982,7 @@
 	return 0;
 }
 
-static int mcr20a_set_ieee_addr(struct device *dev, const uint8_t *ieee_addr)
+static int mcr20a_set_ieee_addr(struct device *dev, const u8_t *ieee_addr)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
 
@@ -1001,10 +1001,10 @@
 	return 0;
 }
 
-static int mcr20a_set_txpower(struct device *dev, int16_t dbm)
+static int mcr20a_set_txpower(struct device *dev, s16_t dbm)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t pwr;
+	u8_t pwr;
 
 	k_mutex_lock(&mcr20a->phy_mutex, K_FOREVER);
 	SYS_LOG_DBG("%d", dbm);
@@ -1032,9 +1032,9 @@
 					struct net_pkt *pkt,
 					struct net_buf *frag)
 {
-	uint8_t cmd[2 + MCR20A_PSDU_LENGTH];
-	uint8_t payload_len = net_pkt_ll_reserve(pkt) + frag->len;
-	uint8_t *payload = frag->data - net_pkt_ll_reserve(pkt);
+	u8_t cmd[2 + MCR20A_PSDU_LENGTH];
+	u8_t payload_len = net_pkt_ll_reserve(pkt) + frag->len;
+	u8_t *payload = frag->data - net_pkt_ll_reserve(pkt);
 	bool retval;
 
 	k_sem_take(&spi->spi_sem, K_FOREVER);
@@ -1069,7 +1069,7 @@
 		     struct net_buf *frag)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t seq = MCR20A_AUTOACK_ENABLED ? MCR20A_XCVSEQ_TX_RX :
+	u8_t seq = MCR20A_AUTOACK_ENABLED ? MCR20A_XCVSEQ_TX_RX :
 					       MCR20A_XCVSEQ_TX;
 
 	k_mutex_lock(&mcr20a->phy_mutex, K_FOREVER);
@@ -1118,8 +1118,8 @@
 static int mcr20a_start(struct device *dev)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t timeout = 6;
-	uint8_t status;
+	u8_t timeout = 6;
+	u8_t status;
 
 	k_mutex_lock(&mcr20a->phy_mutex, K_FOREVER);
 	enable_irqb_interrupt(mcr20a, false);
@@ -1206,7 +1206,7 @@
 	return -EIO;
 }
 
-static uint8_t mcr20a_get_lqi(struct device *dev)
+static u8_t mcr20a_get_lqi(struct device *dev)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
 
@@ -1224,7 +1224,7 @@
 
 	k_sem_take(&spi->spi_sem, K_FOREVER);
 
-	for (uint8_t i = 0;
+	for (u8_t i = 0;
 	     i < sizeof(overwrites_indirect) / sizeof(overwrites_t);
 	     i++) {
 
@@ -1252,9 +1252,9 @@
 static int power_on_and_setup(struct device *dev)
 {
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t timeout = 6;
-	uint32_t status;
-	uint8_t tmp = 0;
+	u8_t timeout = 6;
+	u32_t status;
+	u8_t tmp = 0;
 
 	set_reset(dev, 0);
 	_usleep(150);
@@ -1418,7 +1418,7 @@
 {
 	struct device *dev = net_if_get_device(iface);
 	struct mcr20a_context *mcr20a = dev->driver_data;
-	uint8_t *mac = get_mac(dev);
+	u8_t *mac = get_mac(dev);
 
 	net_if_set_link_addr(iface, mac, 8, NET_LINK_IEEE802154);
 
diff --git a/drivers/ieee802154/ieee802154_mcr20a.h b/drivers/ieee802154/ieee802154_mcr20a.h
index 52c7180..2fd96b8 100644
--- a/drivers/ieee802154/ieee802154_mcr20a.h
+++ b/drivers/ieee802154/ieee802154_mcr20a.h
@@ -19,13 +19,13 @@
  */
 struct mcr20a_spi {
 	struct device *dev;
-	uint32_t slave;
+	u32_t slave;
 	struct k_sem spi_sem;
 	/**
 	 * cmd_buf will use at most 9 bytes:
 	 * dummy bytes + 8 ieee address bytes
 	 */
-	uint8_t cmd_buf[12];
+	u8_t cmd_buf[12];
 };
 
 struct mcr20a_context {
@@ -35,7 +35,7 @@
 	struct device *reset_gpio;
 	struct gpio_callback irqb_cb;
 	struct mcr20a_spi spi;
-	uint8_t mac_addr[8];
+	u8_t mac_addr[8];
 	struct k_mutex phy_mutex;
 	struct k_sem isr_sem;
 	/*********TX + CCA*********/
@@ -43,28 +43,28 @@
 	atomic_t seq_retval;
 	/************RX************/
 	char __stack mcr20a_rx_stack[CONFIG_IEEE802154_MCR20A_RX_STACK_SIZE];
-	uint8_t lqi;
+	u8_t lqi;
 };
 
 #include "ieee802154_mcr20a_regs.h"
 
-uint8_t _mcr20a_read_reg(struct mcr20a_spi *spi, bool dreg, uint8_t addr);
-bool _mcr20a_write_reg(struct mcr20a_spi *spi, bool dreg, uint8_t addr,
-		       uint8_t value);
-bool _mcr20a_write_burst(struct mcr20a_spi *spi, bool dreg, uint16_t addr,
-			 uint8_t *data_buf, uint8_t len);
-bool _mcr20a_read_burst(struct mcr20a_spi *spi, bool dreg, uint16_t addr,
-			uint8_t *data_buf, uint8_t len);
+u8_t _mcr20a_read_reg(struct mcr20a_spi *spi, bool dreg, u8_t addr);
+bool _mcr20a_write_reg(struct mcr20a_spi *spi, bool dreg, u8_t addr,
+		       u8_t value);
+bool _mcr20a_write_burst(struct mcr20a_spi *spi, bool dreg, u16_t addr,
+			 u8_t *data_buf, u8_t len);
+bool _mcr20a_read_burst(struct mcr20a_spi *spi, bool dreg, u16_t addr,
+			u8_t *data_buf, u8_t len);
 
 #define DEFINE_REG_READ(__reg_name, __reg_addr, __dreg)			    \
-	static inline uint8_t read_reg_##__reg_name(struct mcr20a_spi *spi) \
+	static inline u8_t read_reg_##__reg_name(struct mcr20a_spi *spi) \
 	{								    \
 		return _mcr20a_read_reg(spi, __dreg, __reg_addr);	    \
 	}
 
 #define DEFINE_REG_WRITE(__reg_name, __reg_addr, __dreg)		  \
 	static inline bool write_reg_##__reg_name(struct mcr20a_spi *spi, \
-						  uint8_t value)	  \
+						  u8_t value)	  \
 	{								  \
 		return _mcr20a_write_reg(spi, __dreg, __reg_addr, value); \
 	}
@@ -141,7 +141,7 @@
 DEFINE_IREG_WRITE(rx_wtr_mark, MCR20A_RX_WTR_MARK)
 
 #define DEFINE_BITS_SET(__reg_name, __reg_addr, __nibble)		\
-	static inline uint8_t set_bits_##__reg_name(uint8_t value)	\
+	static inline u8_t set_bits_##__reg_name(u8_t value)	\
 	{								\
 		value = (value << __reg_addr##__nibble##_SHIFT) &	\
 			 __reg_addr##__nibble##_MASK;			\
@@ -156,14 +156,14 @@
 
 #define DEFINE_BURST_WRITE(__reg_addr, __addr, __sz, __dreg)		    \
 	static inline bool write_burst_##__reg_addr(struct mcr20a_spi *spi, \
-						    uint8_t *buf)	    \
+						    u8_t *buf)	    \
 	{								    \
 		return _mcr20a_write_burst(spi, __dreg, __addr, buf, __sz); \
 	}
 
 #define DEFINE_BURST_READ(__reg_addr, __addr, __sz, __dreg)		    \
 	static inline bool read_burst_##__reg_addr(struct mcr20a_spi *spi,  \
-						    uint8_t *buf)	    \
+						    u8_t *buf)	    \
 	{								    \
 		return _mcr20a_read_burst(spi, __dreg, __addr, buf, __sz);  \
 	}
diff --git a/drivers/ieee802154/ieee802154_nrf5.c b/drivers/ieee802154/ieee802154_nrf5.c
index 28cf151..993b9b8 100644
--- a/drivers/ieee802154/ieee802154_nrf5.c
+++ b/drivers/ieee802154/ieee802154_nrf5.c
@@ -46,9 +46,9 @@
 #define NRF5_802154_CFG(dev) \
 	((struct nrf5_802154_config * const)(dev)->config->config_info)
 
-static void nrf5_get_eui64(uint8_t *mac)
+static void nrf5_get_eui64(u8_t *mac)
 {
-	memcpy(mac, (const uint32_t *)&NRF_FICR->DEVICEID, 8);
+	memcpy(mac, (const u32_t *)&NRF_FICR->DEVICEID, 8);
 }
 
 static void nrf5_rx_thread(void *arg1, void *arg2, void *arg3)
@@ -58,7 +58,7 @@
 	struct net_buf *frag = NULL;
 	enum net_verdict ack_result;
 	struct net_pkt *pkt;
-	uint8_t pkt_len;
+	u8_t pkt_len;
 
 	ARG_UNUSED(arg2);
 	ARG_UNUSED(arg3);
@@ -162,7 +162,7 @@
 	return 0;
 }
 
-static int nrf5_set_channel(struct device *dev, uint16_t channel)
+static int nrf5_set_channel(struct device *dev, u16_t channel)
 {
 	struct nrf5_802154_data *nrf5_radio = NRF5_802154_DATA(dev);
 
@@ -180,9 +180,9 @@
 	return 0;
 }
 
-static int nrf5_set_pan_id(struct device *dev, uint16_t pan_id)
+static int nrf5_set_pan_id(struct device *dev, u16_t pan_id)
 {
-	uint8_t pan_id_le[2];
+	u8_t pan_id_le[2];
 
 	ARG_UNUSED(dev);
 
@@ -193,9 +193,9 @@
 	return 0;
 }
 
-static int nrf5_set_short_addr(struct device *dev, uint16_t short_addr)
+static int nrf5_set_short_addr(struct device *dev, u16_t short_addr)
 {
-	uint8_t short_addr_le[2];
+	u8_t short_addr_le[2];
 
 	ARG_UNUSED(dev);
 
@@ -206,7 +206,7 @@
 	return 0;
 }
 
-static int nrf5_set_ieee_addr(struct device *dev, const uint8_t *ieee_addr)
+static int nrf5_set_ieee_addr(struct device *dev, const u8_t *ieee_addr)
 {
 	ARG_UNUSED(dev);
 
@@ -219,7 +219,7 @@
 	return 0;
 }
 
-static int nrf5_set_txpower(struct device *dev, int16_t dbm)
+static int nrf5_set_txpower(struct device *dev, s16_t dbm)
 {
 	struct nrf5_802154_data *nrf5_radio = NRF5_802154_DATA(dev);
 
@@ -234,8 +234,8 @@
 		   struct net_buf *frag)
 {
 	struct nrf5_802154_data *nrf5_radio = NRF5_802154_DATA(dev);
-	uint8_t payload_len = net_pkt_ll_reserve(pkt) + frag->len;
-	uint8_t *payload = frag->data - net_pkt_ll_reserve(pkt);
+	u8_t payload_len = net_pkt_ll_reserve(pkt) + frag->len;
+	u8_t *payload = frag->data - net_pkt_ll_reserve(pkt);
 
 	SYS_LOG_DBG("%p (%u)", payload, payload_len);
 
@@ -292,7 +292,7 @@
 	return 0;
 }
 
-static uint8_t nrf5_get_lqi(struct device *dev)
+static u8_t nrf5_get_lqi(struct device *dev)
 {
 	struct nrf5_802154_data *nrf5_radio = NRF5_802154_DATA(dev);
 
@@ -365,7 +365,7 @@
 
 /* nRF5 radio driver callbacks */
 
-void nrf_drv_radio802154_received(uint8_t *p_data, int8_t power, int8_t lqi)
+void nrf_drv_radio802154_received(u8_t *p_data, s8_t power, s8_t lqi)
 {
 	nrf5_data.rx_psdu = p_data;
 	nrf5_data.rssi = power;
@@ -387,7 +387,7 @@
 	k_sem_give(&nrf5_data.tx_wait);
 }
 
-void nrf_drv_radio802154_energy_detected(int8_t result)
+void nrf_drv_radio802154_energy_detected(s8_t result)
 {
 	nrf5_data.channel_ed = result;
 	k_sem_give(&nrf5_data.cca_wait);
diff --git a/drivers/ieee802154/ieee802154_nrf5.h b/drivers/ieee802154/ieee802154_nrf5.h
index 2601faf..8a0a17a 100644
--- a/drivers/ieee802154/ieee802154_nrf5.h
+++ b/drivers/ieee802154/ieee802154_nrf5.h
@@ -19,13 +19,13 @@
 	/* Pointer to the network interface. */
 	struct net_if *iface;
 	/* Pointer to a received frame. */
-	uint8_t *rx_psdu;
+	u8_t *rx_psdu;
 	/* TX buffer. First byte is PHR (length), remaining bytes are
 	 * MPDU data.
 	 */
-	uint8_t tx_psdu[NRF5_PHR_LENGTH + NRF5_PSDU_LENGTH];
+	u8_t tx_psdu[NRF5_PHR_LENGTH + NRF5_PSDU_LENGTH];
 	/* 802.15.4 HW address. */
-	uint8_t mac[8];
+	u8_t mac[8];
 	/* RX thread stack. */
 	char __stack rx_stack[CONFIG_IEEE802154_NRF5_RX_STACK_SIZE];
 
@@ -43,17 +43,17 @@
 	bool tx_success;
 
 	/* CCA channel energy. Unit as per 802.15.4-2006 specification. */
-	int8_t channel_ed;
+	s8_t channel_ed;
 
 	/* TX power, in dBm, to be used when sending a frame. */
-	int8_t txpower;
+	s8_t txpower;
 	/* 802.15.4 channel to be used when sending a frame. */
-	uint8_t channel;
+	u8_t channel;
 
 	/* Last received frame LQI value. */
-	uint8_t lqi;
+	u8_t lqi;
 	/* Last received frame RSSI value. */
-	int8_t rssi;
+	s8_t rssi;
 };
 
 #endif /* __IEEE802154_NRF5_H__ */
diff --git a/drivers/ieee802154/ieee802154_uart_pipe.c b/drivers/ieee802154/ieee802154_uart_pipe.c
index 31f50f9..b5fbeae 100644
--- a/drivers/ieee802154/ieee802154_uart_pipe.c
+++ b/drivers/ieee802154/ieee802154_uart_pipe.c
@@ -27,7 +27,7 @@
 /** Singleton device used in uart pipe callback */
 static struct device *upipe_dev;
 
-static uint8_t *upipe_rx(uint8_t *buf, size_t *off)
+static u8_t *upipe_rx(u8_t *buf, size_t *off)
 {
 	struct upipe_context *upipe = upipe_dev->driver_data;
 	struct net_pkt *pkt = NULL;
@@ -107,7 +107,7 @@
 	return 0;
 }
 
-static int upipe_set_channel(struct device *dev, uint16_t channel)
+static int upipe_set_channel(struct device *dev, u16_t channel)
 {
 	struct upipe_context *upipe = dev->driver_data;
 
@@ -118,7 +118,7 @@
 	return 0;
 }
 
-static int upipe_set_pan_id(struct device *dev, uint16_t pan_id)
+static int upipe_set_pan_id(struct device *dev, u16_t pan_id)
 {
 	struct upipe_context *upipe = dev->driver_data;
 
@@ -129,7 +129,7 @@
 	return 0;
 }
 
-static int upipe_set_short_addr(struct device *dev, uint16_t short_addr)
+static int upipe_set_short_addr(struct device *dev, u16_t short_addr)
 {
 	struct upipe_context *upipe = dev->driver_data;
 
@@ -140,7 +140,7 @@
 	return 0;
 }
 
-static int upipe_set_ieee_addr(struct device *dev, const uint8_t *ieee_addr)
+static int upipe_set_ieee_addr(struct device *dev, const u8_t *ieee_addr)
 {
 	struct upipe_context *upipe = dev->driver_data;
 
@@ -151,7 +151,7 @@
 	return 0;
 }
 
-static int upipe_set_txpower(struct device *dev, int16_t dbm)
+static int upipe_set_txpower(struct device *dev, s16_t dbm)
 {
 	struct upipe_context *upipe = dev->driver_data;
 
@@ -166,10 +166,10 @@
 		    struct net_pkt *pkt,
 		    struct net_buf *frag)
 {
-	uint8_t *pkt_buf = frag->data - net_pkt_ll_reserve(pkt);
-	uint8_t len = net_pkt_ll_reserve(pkt) + frag->len;
+	u8_t *pkt_buf = frag->data - net_pkt_ll_reserve(pkt);
+	u8_t len = net_pkt_ll_reserve(pkt) + frag->len;
 	struct upipe_context *upipe = dev->driver_data;
-	uint8_t i, data;
+	u8_t i, data;
 
 	SYS_LOG_DBG("%p (%u)", frag, len);
 
@@ -234,7 +234,7 @@
 	return 0;
 }
 
-static inline uint8_t *get_mac(struct device *dev)
+static inline u8_t *get_mac(struct device *dev)
 {
 	struct upipe_context *upipe = dev->driver_data;
 
@@ -244,7 +244,7 @@
 	upipe->mac_addr[3] = 0x30;
 
 	UNALIGNED_PUT(sys_cpu_to_be32(sys_rand32_get()),
-		      (uint32_t *) ((void *)upipe->mac_addr+4));
+		      (u32_t *) ((void *)upipe->mac_addr+4));
 
 	return upipe->mac_addr;
 }
@@ -253,7 +253,7 @@
 {
 	struct device *dev = net_if_get_device(iface);
 	struct upipe_context *upipe = dev->driver_data;
-	uint8_t *mac = get_mac(dev);
+	u8_t *mac = get_mac(dev);
 
 	SYS_LOG_DBG("");
 
diff --git a/drivers/ieee802154/ieee802154_uart_pipe.h b/drivers/ieee802154/ieee802154_uart_pipe.h
index 8b78d8e..f1eaa17 100644
--- a/drivers/ieee802154/ieee802154_uart_pipe.h
+++ b/drivers/ieee802154/ieee802154_uart_pipe.h
@@ -13,14 +13,14 @@
 
 struct upipe_context {
 	struct net_if *iface;
-	uint8_t mac_addr[8];
+	u8_t mac_addr[8];
 	bool stopped;
 	/** RX specific attributes */
-	uint8_t uart_pipe_buf[1];
+	u8_t uart_pipe_buf[1];
 	bool rx;
-	uint8_t rx_len;
-	uint8_t rx_off;
-	uint8_t rx_buf[127];
+	u8_t rx_len;
+	u8_t rx_off;
+	u8_t rx_buf[127];
 };
 
 #endif /* __IEEE802154_UART_PIPE_H__ */
diff --git a/include/drivers/ieee802154/cc2520.h b/include/drivers/ieee802154/cc2520.h
index 14199f0..1312db2 100644
--- a/include/drivers/ieee802154/cc2520.h
+++ b/include/drivers/ieee802154/cc2520.h
@@ -19,7 +19,7 @@
 
 struct cc2520_gpio_configuration {
 	struct device *dev;
-	uint32_t pin;
+	u32_t pin;
 };
 
 struct cc2520_gpio_configuration *cc2520_configure_gpios(void);
diff --git a/include/net/arp.h b/include/net/arp.h
index e451fb8..4e8ebad 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -20,11 +20,11 @@
 #define NET_ARP_HDR(pkt) ((struct net_arp_hdr *)net_pkt_ip_data(pkt))
 
 struct net_arp_hdr {
-	uint16_t hwtype;		/* HTYPE */
-	uint16_t protocol;		/* PTYPE */
-	uint8_t hwlen;			/* HLEN */
-	uint8_t protolen;		/* PLEN */
-	uint16_t opcode;
+	u16_t hwtype;		/* HTYPE */
+	u16_t protocol;		/* PTYPE */
+	u8_t hwlen;			/* HLEN */
+	u8_t protolen;		/* PLEN */
+	u16_t opcode;
 	struct net_eth_addr src_hwaddr;	/* SHA */
 	struct in_addr src_ipaddr;	/* SPA */
 	struct net_eth_addr dst_hwaddr;	/* THA */
diff --git a/include/net/buf.h b/include/net/buf.h
index 7a65e97..e09f296 100644
--- a/include/net/buf.h
+++ b/include/net/buf.h
@@ -40,7 +40,7 @@
 #define NET_BUF_SIMPLE(_size)                        \
 	((struct net_buf_simple *)(&(struct {        \
 		struct net_buf_simple buf;           \
-		uint8_t data[_size] __net_buf_align; \
+		u8_t data[_size] __net_buf_align; \
 	}) {                                         \
 		.buf.size = _size,                   \
 	}))
@@ -60,18 +60,18 @@
  */
 struct net_buf_simple {
 	/** Pointer to the start of data in the buffer. */
-	uint8_t *data;
+	u8_t *data;
 
 	/** Length of the data behind the data pointer. */
-	uint16_t len;
+	u16_t len;
 
 	/** Amount of data that this buffer can store. */
-	uint16_t size;
+	u16_t size;
 
 	/** Start of the data storage. Not to be accessed directly
 	 *  (the data pointer should be used instead).
 	 */
-	uint8_t __buf[0] __net_buf_align;
+	u8_t __buf[0] __net_buf_align;
 };
 
 /** @brief Initialize a net_buf_simple object.
@@ -128,7 +128,7 @@
  *
  *  @return Pointer to the value added
  */
-uint8_t *net_buf_simple_add_u8(struct net_buf_simple *buf, uint8_t val);
+u8_t *net_buf_simple_add_u8(struct net_buf_simple *buf, u8_t val);
 
 /**
  *  @brief Add 16-bit value at the end of the buffer
@@ -140,7 +140,7 @@
  *  @param buf Buffer to update.
  *  @param val 16-bit value to be added.
  */
-void net_buf_simple_add_le16(struct net_buf_simple *buf, uint16_t val);
+void net_buf_simple_add_le16(struct net_buf_simple *buf, u16_t val);
 
 /**
  *  @brief Add 16-bit value at the end of the buffer
@@ -152,7 +152,7 @@
  *  @param buf Buffer to update.
  *  @param val 16-bit value to be added.
  */
-void net_buf_simple_add_be16(struct net_buf_simple *buf, uint16_t val);
+void net_buf_simple_add_be16(struct net_buf_simple *buf, u16_t val);
 
 /**
  *  @brief Add 32-bit value at the end of the buffer
@@ -164,7 +164,7 @@
  *  @param buf Buffer to update.
  *  @param val 32-bit value to be added.
  */
-void net_buf_simple_add_le32(struct net_buf_simple *buf, uint32_t val);
+void net_buf_simple_add_le32(struct net_buf_simple *buf, u32_t val);
 
 /**
  *  @brief Add 32-bit value at the end of the buffer
@@ -176,7 +176,7 @@
  *  @param buf Buffer to update.
  *  @param val 32-bit value to be added.
  */
-void net_buf_simple_add_be32(struct net_buf_simple *buf, uint32_t val);
+void net_buf_simple_add_be32(struct net_buf_simple *buf, u32_t val);
 
 /**
  *  @brief Push data to the beginning of the buffer.
@@ -200,7 +200,7 @@
  *  @param buf Buffer to update.
  *  @param val 16-bit value to be pushed to the buffer.
  */
-void net_buf_simple_push_le16(struct net_buf_simple *buf, uint16_t val);
+void net_buf_simple_push_le16(struct net_buf_simple *buf, u16_t val);
 
 /**
  *  @brief Push 16-bit value to the beginning of the buffer
@@ -211,7 +211,7 @@
  *  @param buf Buffer to update.
  *  @param val 16-bit value to be pushed to the buffer.
  */
-void net_buf_simple_push_be16(struct net_buf_simple *buf, uint16_t val);
+void net_buf_simple_push_be16(struct net_buf_simple *buf, u16_t val);
 
 /**
  *  @brief Push 8-bit value to the beginning of the buffer
@@ -221,7 +221,7 @@
  *  @param buf Buffer to update.
  *  @param val 8-bit value to be pushed to the buffer.
  */
-void net_buf_simple_push_u8(struct net_buf_simple *buf, uint8_t val);
+void net_buf_simple_push_u8(struct net_buf_simple *buf, u8_t val);
 
 /**
  *  @brief Remove data from the beginning of the buffer.
@@ -246,7 +246,7 @@
  *
  *  @return The 8-bit removed value
  */
-uint8_t net_buf_simple_pull_u8(struct net_buf_simple *buf);
+u8_t net_buf_simple_pull_u8(struct net_buf_simple *buf);
 
 /**
  *  @brief Remove and convert 16 bits from the beginning of the buffer.
@@ -258,7 +258,7 @@
  *
  *  @return 16-bit value converted from little endian to host endian.
  */
-uint16_t net_buf_simple_pull_le16(struct net_buf_simple *buf);
+u16_t net_buf_simple_pull_le16(struct net_buf_simple *buf);
 
 /**
  *  @brief Remove and convert 16 bits from the beginning of the buffer.
@@ -270,7 +270,7 @@
  *
  *  @return 16-bit value converted from big endian to host endian.
  */
-uint16_t net_buf_simple_pull_be16(struct net_buf_simple *buf);
+u16_t net_buf_simple_pull_be16(struct net_buf_simple *buf);
 
 /**
  *  @brief Remove and convert 32 bits from the beginning of the buffer.
@@ -282,7 +282,7 @@
  *
  *  @return 32-bit value converted from little endian to host endian.
  */
-uint32_t net_buf_simple_pull_le32(struct net_buf_simple *buf);
+u32_t net_buf_simple_pull_le32(struct net_buf_simple *buf);
 
 /**
  *  @brief Remove and convert 32 bits from the beginning of the buffer.
@@ -294,7 +294,7 @@
  *
  *  @return 32-bit value converted from big endian to host endian.
  */
-uint32_t net_buf_simple_pull_be32(struct net_buf_simple *buf);
+u32_t net_buf_simple_pull_be32(struct net_buf_simple *buf);
 
 /**
  *  @brief Get the tail pointer for a buffer.
@@ -305,7 +305,7 @@
  *
  *  @return Tail pointer for the buffer.
  */
-static inline uint8_t *net_buf_simple_tail(struct net_buf_simple *buf)
+static inline u8_t *net_buf_simple_tail(struct net_buf_simple *buf)
 {
 	return buf->data + buf->len;
 }
@@ -341,9 +341,9 @@
  */
 struct net_buf_simple_state {
 	/** Offset of the data pointer from the beginning of the storage */
-	uint16_t offset;
+	u16_t offset;
 	/** Length of data */
-	uint16_t len;
+	u16_t len;
 };
 
 /**
@@ -402,10 +402,10 @@
 	};
 
 	/** Reference count. */
-	uint8_t ref;
+	u8_t ref;
 
 	/** Bit-field of buffer flags. */
-	uint8_t flags;
+	u8_t flags;
 
 	/** Where the buffer should go when freed up. */
 	struct net_buf_pool *pool;
@@ -417,13 +417,13 @@
 		/* The ABI of this struct must match net_buf_simple */
 		struct {
 			/** Pointer to the start of data in the buffer. */
-			uint8_t *data;
+			u8_t *data;
 
 			/** Length of the data behind the data pointer. */
-			uint16_t len;
+			u16_t len;
 
 			/** Amount of data that this buffer can store. */
-			uint16_t size;
+			u16_t size;
 		};
 
 		struct net_buf_simple b;
@@ -432,7 +432,7 @@
 	/** Start of the data storage. Not to be accessed directly
 	 *  (the data pointer should be used instead).
 	 */
-	uint8_t __buf[0] __net_buf_align;
+	u8_t __buf[0] __net_buf_align;
 
 	/** After __buf (as given by the "size" field, which can be 0),
 	 *  there may be so-called "user data", which is actually a system
@@ -447,23 +447,23 @@
 	struct k_lifo free;
 
 	/** Number of buffers in pool */
-	const uint16_t buf_count;
+	const u16_t buf_count;
 
 	/** Number of uninitialized buffers */
-	uint16_t uninit_count;
+	u16_t uninit_count;
 
 	/** Data size of each buffer in the pool */
-	const uint16_t buf_size;
+	const u16_t buf_size;
 
 	/** Size of the user data associated with each buffer. */
-	const uint16_t user_data_size;
+	const u16_t user_data_size;
 
 #if defined(CONFIG_NET_BUF_POOL_USAGE)
 	/** Amount of available buffers in the pool. */
-	int16_t avail_count;
+	s16_t avail_count;
 
 	/** Total size of the pool. */
-	const uint16_t pool_size;
+	const u16_t pool_size;
 
 	/** Name of the pool. Used when printing pool information. */
 	const char *name;
@@ -528,8 +528,8 @@
 #define NET_BUF_POOL_DEFINE(_name, _count, _size, _ud_size, _destroy)        \
 	static struct {                                                      \
 		struct net_buf buf;                                          \
-		uint8_t data[_size] __net_buf_align;	                     \
-		uint8_t ud[ROUND_UP(_ud_size, 4)] __net_buf_align;           \
+		u8_t data[_size] __net_buf_align;	                     \
+		u8_t ud[ROUND_UP(_ud_size, 4)] __net_buf_align;           \
 	} _net_buf_pool_##_name[_count] __noinit;                            \
 	static struct net_buf_pool _name =                                   \
 		NET_BUF_POOL_INITIALIZER(_name, _net_buf_pool_##_name,       \
@@ -549,12 +549,12 @@
  *  @return New buffer or NULL if out of buffers.
  */
 #if defined(CONFIG_NET_BUF_LOG)
-struct net_buf *net_buf_alloc_debug(struct net_buf_pool *pool, int32_t timeout,
+struct net_buf *net_buf_alloc_debug(struct net_buf_pool *pool, s32_t timeout,
 				    const char *func, int line);
 #define	net_buf_alloc(_pool, _timeout) \
 	net_buf_alloc_debug(_pool, _timeout, __func__, __LINE__)
 #else
-struct net_buf *net_buf_alloc(struct net_buf_pool *pool, int32_t timeout);
+struct net_buf *net_buf_alloc(struct net_buf_pool *pool, s32_t timeout);
 #endif
 
 /**
@@ -571,12 +571,12 @@
  *  @return New buffer or NULL if the FIFO is empty.
  */
 #if defined(CONFIG_NET_BUF_LOG)
-struct net_buf *net_buf_get_debug(struct k_fifo *fifo, int32_t timeout,
+struct net_buf *net_buf_get_debug(struct k_fifo *fifo, s32_t timeout,
 				  const char *func, int line);
 #define	net_buf_get(_fifo, _timeout) \
 	net_buf_get_debug(_fifo, _timeout, __func__, __LINE__)
 #else
-struct net_buf *net_buf_get(struct k_fifo *fifo, int32_t timeout);
+struct net_buf *net_buf_get(struct k_fifo *fifo, s32_t timeout);
 #endif
 
 /**
@@ -663,7 +663,7 @@
  *
  *  @return Duplicated buffer or NULL if out of buffers.
  */
-struct net_buf *net_buf_clone(struct net_buf *buf, int32_t timeout);
+struct net_buf *net_buf_clone(struct net_buf *buf, s32_t timeout);
 
 /**
  *  @brief Get a pointer to the user data of a buffer.
diff --git a/include/net/dns_resolve.h b/include/net/dns_resolve.h
index f39e289..2fa63c1 100644
--- a/include/net/dns_resolve.h
+++ b/include/net/dns_resolve.h
@@ -51,10 +51,10 @@
 	struct sockaddr ai_addr;
 	char            ai_canonname[DNS_MAX_NAME_SIZE + 1];
 	socklen_t       ai_addrlen;
-	uint16_t        ai_flags;
-	uint8_t         ai_family;
-	uint8_t         ai_socktype;
-	uint8_t         ai_protocol;
+	u16_t        ai_flags;
+	u8_t         ai_family;
+	u8_t         ai_socktype;
+	u8_t         ai_protocol;
 };
 
 /**
@@ -118,7 +118,7 @@
 	/** This timeout is also used when a buffer is required from the
 	 * buffer pools.
 	 */
-	int32_t buf_timeout;
+	s32_t buf_timeout;
 
 	/** Result callbacks. We have multiple callbacks here so that it is
 	 * possible to do multiple queries at the same time.
@@ -137,7 +137,7 @@
 		void *user_data;
 
 		/** TX timeout */
-		int32_t timeout;
+		s32_t timeout;
 
 		/** String containing the thing to resolve like www.example.com
 		 */
@@ -147,7 +147,7 @@
 		enum dns_query_type query_type;
 
 		/** DNS id of this query */
-		uint16_t id;
+		u16_t id;
 	} queries[CONFIG_DNS_NUM_CONCUR_QUERIES];
 
 	/** Is this context in use */
@@ -203,7 +203,7 @@
  * @return 0 if ok, <0 if error.
  */
 int dns_resolve_cancel(struct dns_resolve_context *ctx,
-		       uint16_t dns_id);
+		       u16_t dns_id);
 
 /**
  * @brief Resolve DNS name.
@@ -235,10 +235,10 @@
 int dns_resolve_name(struct dns_resolve_context *ctx,
 		     const char *query,
 		     enum dns_query_type type,
-		     uint16_t *dns_id,
+		     u16_t *dns_id,
 		     dns_resolve_cb_t cb,
 		     void *user_data,
-		     int32_t timeout);
+		     s32_t timeout);
 
 /**
  * @brief Get default DNS context.
@@ -281,10 +281,10 @@
  */
 static inline int dns_get_addr_info(const char *query,
 				    enum dns_query_type type,
-				    uint16_t *dns_id,
+				    u16_t *dns_id,
 				    dns_resolve_cb_t cb,
 				    void *user_data,
-				    int32_t timeout)
+				    s32_t timeout)
 {
 	return dns_resolve_name(dns_resolve_get_default(),
 				query,
@@ -304,7 +304,7 @@
  *
  * @return 0 if ok, <0 if error.
  */
-static inline int dns_cancel_addr_info(uint16_t dns_id)
+static inline int dns_cancel_addr_info(u16_t dns_id)
 {
 	return dns_resolve_cancel(dns_resolve_get_default(), dns_id);
 }
diff --git a/include/net/ethernet.h b/include/net/ethernet.h
index 66362a9..3bb90ae 100644
--- a/include/net/ethernet.h
+++ b/include/net/ethernet.h
@@ -29,13 +29,13 @@
 #define NET_ETH_MINIMAL_FRAME_SIZE	60
 
 struct net_eth_addr {
-	uint8_t addr[6];
+	u8_t addr[6];
 };
 
 struct net_eth_hdr {
 	struct net_eth_addr dst;
 	struct net_eth_addr src;
-	uint16_t type;
+	u16_t type;
 } __packed;
 
 static inline bool net_eth_is_addr_broadcast(struct net_eth_addr *addr)
diff --git a/include/net/http.h b/include/net/http.h
index 18764bb..9e3c38f 100644
--- a/include/net/http.h
+++ b/include/net/http.h
@@ -30,22 +30,22 @@
 	/** Payload, may be NULL */
 	char *payload;
 	/** Payload size, may be 0 */
-	uint16_t payload_size;
+	u16_t payload_size;
 };
 
-int http_request(struct net_context *net_ctx, int32_t timeout,
+int http_request(struct net_context *net_ctx, s32_t timeout,
 		 struct http_client_request *req);
 
-int http_request_get(struct net_context *net_ctx, int32_t timeout, char *url,
+int http_request_get(struct net_context *net_ctx, s32_t timeout, char *url,
 		     char *header_fields);
 
-int http_request_head(struct net_context *net_ctx, int32_t timeout, char *url,
+int http_request_head(struct net_context *net_ctx, s32_t timeout, char *url,
 		      char *header_fields);
 
-int http_request_options(struct net_context *net_ctx, int32_t timeout,
+int http_request_options(struct net_context *net_ctx, s32_t timeout,
 			 char *url, char *header_fields);
 
-int http_request_post(struct net_context *net_ctx, int32_t timeout, char *url,
+int http_request_post(struct net_context *net_ctx, s32_t timeout, char *url,
 		      char *header_fields, char *content_type_value,
 		      char *payload);
 #endif
@@ -71,35 +71,35 @@
 	 */
 	const char *key;
 	/** Length of the field name */
-	uint16_t key_len;
+	u16_t key_len;
 
 	/** Value, this variable will point to the beginning of the string
 	 *  containing the field value
 	 */
 	const char *value;
 	/** Length of the field value */
-	uint16_t value_len;
+	u16_t value_len;
 };
 
 /* The HTTP server context struct */
 struct http_server_ctx {
-	uint8_t state;
+	u8_t state;
 
 	/** Collection of header fields */
 	struct http_field_value field_values[CONFIG_HTTP_HEADER_FIELD_ITEMS];
 	/** Number of header field elements */
-	uint16_t field_values_ctr;
+	u16_t field_values_ctr;
 
 	/** HTTP Request URL */
 	const char *url;
 	/** URL's length */
-	uint16_t url_len;
+	u16_t url_len;
 
 	/**IP stack network context */
 	struct net_context *net_ctx;
 
 	/** Network timeout */
-	int32_t timeout;
+	s32_t timeout;
 
 #if defined(CONFIG_HTTP_PARSER)
 	/** HTTP parser */
diff --git a/include/net/http_parser.h b/include/net/http_parser.h
index b53c241..28e0fa5 100644
--- a/include/net/http_parser.h
+++ b/include/net/http_parser.h
@@ -34,14 +34,14 @@
 	(!defined(_MSC_VER) || _MSC_VER < 1600) && !defined(__WINE__)
 #include <BaseTsd.h>
 #include <stddef.h>
-typedef __int8 int8_t;
-typedef unsigned __int8 uint8_t;
-typedef __int16 int16_t;
-typedef unsigned __int16 uint16_t;
-typedef __int32 int32_t;
-typedef unsigned __int32 uint32_t;
-typedef __int64 int64_t;
-typedef unsigned __int64 uint64_t;
+typedef __int8 s8_t;
+typedef unsigned __int8 u8_t;
+typedef __int16 s16_t;
+typedef unsigned __int16 u16_t;
+typedef __int32 s32_t;
+typedef unsigned __int32 u32_t;
+typedef __int64 s64_t;
+typedef unsigned __int64 u64_t;
 #else
 #include <zephyr/types.h>
 #include <stddef.h>
@@ -186,8 +186,8 @@
 	unsigned int index : 7;        /* index into current matcher */
 	unsigned int lenient_http_headers : 1;
 
-	uint32_t nread;          /* # bytes read in various scenarios */
-	uint64_t content_length; /* # bytes in body (0 if no Content-Length
+	u32_t nread;          /* # bytes read in various scenarios */
+	u64_t content_length; /* # bytes in body (0 if no Content-Length
 				  * header)
 				  */
 	/** READ-ONLY **/
@@ -246,17 +246,17 @@
  * Callers should index into field_data[] with UF_* values iff field_set
  * has the relevant (1 << UF_*) bit set. As a courtesy to clients (and
  * because we probably have padding left over), we convert any port to
- * a uint16_t.
+ * a u16_t.
  */
 struct http_parser_url {
-	uint16_t field_set;           /* Bitmask of (1 << UF_*) values */
-	uint16_t port;                /* Converted UF_PORT string */
+	u16_t field_set;           /* Bitmask of (1 << UF_*) values */
+	u16_t port;                /* Converted UF_PORT string */
 
 	struct {
-		uint16_t off;               /* Offset into buffer in which field
+		u16_t off;               /* Offset into buffer in which field
 					     * starts
 					     */
-		uint16_t len;               /* Length of run in buffer */
+		u16_t len;               /* Length of run in buffer */
 	} field_data[UF_MAX];
 };
 
diff --git a/include/net/ieee802154.h b/include/net/ieee802154.h
index f86a83b..bd23be6 100644
--- a/include/net/ieee802154.h
+++ b/include/net/ieee802154.h
@@ -18,23 +18,23 @@
 #define IEEE802154_MAX_ADDR_LENGTH	8
 
 struct ieee802154_security_ctx {
-	uint32_t frame_counter;
+	u32_t frame_counter;
 	struct cipher_ctx enc;
 	struct cipher_ctx dec;
-	uint8_t key[16];
-	uint8_t key_len;
-	uint8_t level		: 3;
-	uint8_t key_mode	: 2;
-	uint8_t _unused		: 3;
+	u8_t key[16];
+	u8_t key_len;
+	u8_t level		: 3;
+	u8_t key_mode	: 2;
+	u8_t _unused		: 3;
 };
 
 /* This not meant to be used by any code but 802.15.4 L2 stack */
 struct ieee802154_context {
-	uint16_t pan_id;
-	uint16_t channel;
+	u16_t pan_id;
+	u16_t channel;
 	struct k_sem ack_lock;
-	uint16_t short_addr;
-	uint8_t ext_addr[IEEE802154_MAX_ADDR_LENGTH];
+	u16_t short_addr;
+	u8_t ext_addr[IEEE802154_MAX_ADDR_LENGTH];
 #ifdef CONFIG_NET_L2_IEEE802154_MGMT
 	struct ieee802154_req_params *scan_ctx;
 	union {
@@ -42,20 +42,20 @@
 		struct k_sem req_lock;
 	};
 	union {
-		uint8_t ext_addr[IEEE802154_MAX_ADDR_LENGTH];
-		uint16_t short_addr;
+		u8_t ext_addr[IEEE802154_MAX_ADDR_LENGTH];
+		u16_t short_addr;
 	} coord;
-	uint8_t coord_addr_len;
+	u8_t coord_addr_len;
 #endif
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
 	struct ieee802154_security_ctx sec_ctx;
 #endif
-	int16_t tx_power;
-	uint8_t sequence;
-	uint8_t ack_received	: 1;
-	uint8_t ack_requested	: 1;
-	uint8_t associated	: 1;
-	uint8_t _unused		: 5;
+	s16_t tx_power;
+	u8_t sequence;
+	u8_t ack_received	: 1;
+	u8_t ack_requested	: 1;
+	u8_t associated	: 1;
+	u8_t _unused		: 5;
 };
 
 
@@ -219,26 +219,26 @@
  */
 struct ieee802154_req_params {
 	/** The set of channels to scan, use above macros to manage it */
-	uint32_t channel_set;
+	u32_t channel_set;
 
 	/** Duration of scan, per-channel, in milliseconds */
-	uint32_t duration;
+	u32_t duration;
 
 	/** Current channel in use as a result */
-	uint16_t channel;
+	u16_t channel;
 	/** Current pan_id in use as a result */
-	uint16_t pan_id;
+	u16_t pan_id;
 
 	/** Result address */
 	union {
-		uint8_t addr[IEEE802154_MAX_ADDR_LENGTH];
-		uint16_t short_addr;
+		u8_t addr[IEEE802154_MAX_ADDR_LENGTH];
+		u16_t short_addr;
 	};
 
 	/** length of address */
-	uint8_t len;
+	u8_t len;
 	/** Link quality information, between 0 and 255 */
-	uint8_t lqi;
+	u8_t lqi;
 };
 
 /**
@@ -247,11 +247,11 @@
  * Used to setup the link-layer security settings
  */
 struct ieee802154_security_params {
-	uint8_t key[16];
-	uint8_t key_len;
-	uint8_t key_mode	: 2;
-	uint8_t level		: 3;
-	uint8_t _unused		: 3;
+	u8_t key[16];
+	u8_t key_len;
+	u8_t key_mode	: 2;
+	u8_t level		: 3;
+	u8_t _unused		: 3;
 };
 
 #endif /* __IEEE802154_H__ */
diff --git a/include/net/ieee802154_radio.h b/include/net/ieee802154_radio.h
index 6d29ccd..c2344da 100644
--- a/include/net/ieee802154_radio.h
+++ b/include/net/ieee802154_radio.h
@@ -28,19 +28,19 @@
 	int (*cca)(struct device *dev);
 
 	/** Set current channel */
-	int (*set_channel)(struct device *dev, uint16_t channel);
+	int (*set_channel)(struct device *dev, u16_t channel);
 
 	/** Set current PAN id */
-	int (*set_pan_id)(struct device *dev, uint16_t pan_id);
+	int (*set_pan_id)(struct device *dev, u16_t pan_id);
 
 	/** Set current device's short address */
-	int (*set_short_addr)(struct device *dev, uint16_t short_addr);
+	int (*set_short_addr)(struct device *dev, u16_t short_addr);
 
 	/** Set current devices's full length address */
-	int (*set_ieee_addr)(struct device *dev, const uint8_t *ieee_addr);
+	int (*set_ieee_addr)(struct device *dev, const u8_t *ieee_addr);
 
 	/** Set TX power level in dbm */
-	int (*set_txpower)(struct device *dev, int16_t dbm);
+	int (*set_txpower)(struct device *dev, s16_t dbm);
 
 	/** Transmit a packet fragment */
 	int (*tx)(struct device *dev,
@@ -54,7 +54,7 @@
 	int (*stop)(struct device *dev);
 
 	/** Get latest Link Quality Information */
-	uint8_t (*get_lqi)(struct device *dev);
+	u8_t (*get_lqi)(struct device *dev);
 } __packed;
 
 /**
diff --git a/include/net/mqtt.h b/include/net/mqtt.h
index 4dd1cd6..a462b77 100644
--- a/include/net/mqtt.h
+++ b/include/net/mqtt.h
@@ -60,7 +60,7 @@
 	/** IP stack context structure */
 	struct net_context *net_ctx;
 	/** Network timeout for tx and rx routines */
-	int32_t net_timeout;
+	s32_t net_timeout;
 
 	/** Callback executed when a MQTT CONNACK msg is received and validated.
 	 * If this function pointer is not used, must be set to NULL.
@@ -88,7 +88,7 @@
 	 * @param [in] pkt_id Packet Identifier for the input MQTT msg
 	 * @param [in] type Packet type
 	 */
-	int (*publish_tx)(struct mqtt_ctx *ctx, uint16_t pkt_id,
+	int (*publish_tx)(struct mqtt_ctx *ctx, u16_t pkt_id,
 			  enum mqtt_packet type);
 
 	/** Callback executed when a MQTT_APP_SUBSCRIBER,
@@ -108,7 +108,7 @@
 	 * @param [in] type Packet type
 	 */
 	int (*publish_rx)(struct mqtt_ctx *ctx, struct mqtt_publish_msg *msg,
-			  uint16_t pkt_id, enum mqtt_packet type);
+			  u16_t pkt_id, enum mqtt_packet type);
 
 	/** Callback executed when a MQTT_APP_SUBSCRIBER or
 	 * MQTT_APP_PUBLISHER_SUBSCRIBER receives the MQTT SUBACK message
@@ -122,8 +122,8 @@
 	 * @param [in] items Number of elements in the qos array
 	 * @param [in] qos Array of QoS values
 	 */
-	int (*subscribe)(struct mqtt_ctx *ctx, uint16_t pkt_id,
-			 uint8_t items, enum mqtt_qos qos[]);
+	int (*subscribe)(struct mqtt_ctx *ctx, u16_t pkt_id,
+			 u8_t items, enum mqtt_qos qos[]);
 
 	/** Callback executed when a MQTT_APP_SUBSCRIBER or
 	 * MQTT_APP_PUBLISHER_SUBSCRIBER receives the MQTT UNSUBACK message
@@ -135,7 +135,7 @@
 	 * @param [in] ctx	MQTT context
 	 * @param [in] pkt_id	Packet Identifier for the MQTT SUBACK msg
 	 */
-	int (*unsubscribe)(struct mqtt_ctx *ctx, uint16_t pkt_id);
+	int (*unsubscribe)(struct mqtt_ctx *ctx, u16_t pkt_id);
 
 	/** Callback executed when an incoming message doesn't pass the
 	 * validation stage. This callback may be NULL.
@@ -145,22 +145,22 @@
 	 * @param [in] ctx	MQTT context
 	 * @param [in] pkt_type	MQTT Packet type
 	 */
-	void (*malformed)(struct mqtt_ctx *ctx, uint16_t pkt_type);
+	void (*malformed)(struct mqtt_ctx *ctx, u16_t pkt_type);
 
 	/* Internal use only */
 	int (*rcv)(struct mqtt_ctx *ctx, struct net_pkt *);
 
 	/** Application type, see: enum mqtt_app */
-	uint8_t app_type;
+	u8_t app_type;
 
 	/* Clean session is also part of the MQTT CONNECT msg, however app
 	 * behavior is influenced by this parameter, so we keep a copy here
 	 */
 	/** MQTT Clean Session parameter */
-	uint8_t clean_session:1;
+	u8_t clean_session:1;
 
 	/** 1 if the MQTT application is connected and 0 otherwise */
-	uint8_t connected:1;
+	u8_t connected:1;
 };
 
 /**
@@ -208,7 +208,7 @@
  * @retval -ENOMEM
  * @retval -EIO
  */
-int mqtt_tx_puback(struct mqtt_ctx *ctx, uint16_t id);
+int mqtt_tx_puback(struct mqtt_ctx *ctx, u16_t id);
 
 /**
  * Sends the MQTT PUBCOMP message with the given packet id
@@ -221,7 +221,7 @@
  * @retval -ENOMEM
  * @retval -EIO
  */
-int mqtt_tx_pubcomp(struct mqtt_ctx *ctx, uint16_t id);
+int mqtt_tx_pubcomp(struct mqtt_ctx *ctx, u16_t id);
 
 /**
  * Sends the MQTT PUBREC message with the given packet id
@@ -233,7 +233,7 @@
  * @retval -ENOMEM
  * @retval -EIO
  */
-int mqtt_tx_pubrec(struct mqtt_ctx *ctx, uint16_t id);
+int mqtt_tx_pubrec(struct mqtt_ctx *ctx, u16_t id);
 
 /**
  * Sends the MQTT PUBREL message with the given packet id
@@ -246,7 +246,7 @@
  * @retval -ENOMEM
  * @retval -EIO
  */
-int mqtt_tx_pubrel(struct mqtt_ctx *ctx, uint16_t id);
+int mqtt_tx_pubrel(struct mqtt_ctx *ctx, u16_t id);
 
 /**
  * Sends the MQTT PUBLISH message
@@ -292,7 +292,7 @@
  * @retval -ENOMEM
  * @retval -EIO
  */
-int mqtt_tx_subscribe(struct mqtt_ctx *ctx, uint16_t pkt_id, uint8_t items,
+int mqtt_tx_subscribe(struct mqtt_ctx *ctx, u16_t pkt_id, u8_t items,
 		      const char *topics[], const enum mqtt_qos qos[]);
 
 /**
@@ -308,7 +308,7 @@
  * @retval -ENOMEM
  * @retval -EIO
  */
-int mqtt_tx_unsubscribe(struct mqtt_ctx *ctx, uint16_t pkt_id, uint8_t items,
+int mqtt_tx_unsubscribe(struct mqtt_ctx *ctx, u16_t pkt_id, u8_t items,
 			const char *topics[]);
 
 
diff --git a/include/net/mqtt_types.h b/include/net/mqtt_types.h
index 0de0300..cdc6fae 100644
--- a/include/net/mqtt_types.h
+++ b/include/net/mqtt_types.h
@@ -54,32 +54,32 @@
 };
 
 struct mqtt_connect_msg {
-	uint8_t clean_session:1;
+	u8_t clean_session:1;
 	char *client_id;
-	uint16_t client_id_len;
-	uint8_t will_flag:1;
+	u16_t client_id_len;
+	u8_t will_flag:1;
 	enum mqtt_qos will_qos;
-	uint8_t will_retain:1;
+	u8_t will_retain:1;
 	char *will_topic;
-	uint16_t will_topic_len;
-	uint8_t *will_msg;
-	uint16_t will_msg_len;
-	uint16_t keep_alive;
+	u16_t will_topic_len;
+	u8_t *will_msg;
+	u16_t will_msg_len;
+	u16_t keep_alive;
 	const char *user_name;
-	uint16_t user_name_len;
-	uint8_t *password;
-	uint16_t password_len;
+	u16_t user_name_len;
+	u8_t *password;
+	u16_t password_len;
 };
 
 struct mqtt_publish_msg {
-	uint8_t dup;
+	u8_t dup;
 	enum mqtt_qos qos;
-	uint8_t retain;
-	uint16_t pkt_id;
+	u8_t retain;
+	u16_t pkt_id;
 	char *topic;
-	uint16_t topic_len;
-	uint8_t *msg;
-	uint16_t msg_len;
+	u16_t topic_len;
+	u8_t *msg;
+	u16_t msg_len;
 };
 
 /**
diff --git a/include/net/net_context.h b/include/net/net_context.h
index 927a12a..326cc76 100644
--- a/include/net/net_context.h
+++ b/include/net/net_context.h
@@ -228,10 +228,10 @@
 #endif /* CONFIG_NET_CONTEXT_SYNC_RECV */
 
 	/** Network interface assigned to this context */
-	uint8_t iface;
+	u8_t iface;
 
 	/** Flags for the context */
-	uint8_t flags;
+	u8_t flags;
 
 #if defined(CONFIG_NET_TCP)
 	/** TCP connection information */
@@ -575,7 +575,7 @@
 			const struct sockaddr *addr,
 			socklen_t addrlen,
 			net_context_connect_cb_t cb,
-			int32_t timeout,
+			s32_t timeout,
 			void *user_data);
 
 /**
@@ -605,7 +605,7 @@
  */
 int net_context_accept(struct net_context *context,
 		       net_tcp_accept_cb_t cb,
-		       int32_t timeout,
+		       s32_t timeout,
 		       void *user_data);
 
 /**
@@ -635,7 +635,7 @@
  */
 int net_context_send(struct net_pkt *pkt,
 		     net_context_send_cb_t cb,
-		     int32_t timeout,
+		     s32_t timeout,
 		     void *token,
 		     void *user_data);
 
@@ -670,7 +670,7 @@
 		       const struct sockaddr *dst_addr,
 		       socklen_t addrlen,
 		       net_context_send_cb_t cb,
-		       int32_t timeout,
+		       s32_t timeout,
 		       void *token,
 		       void *user_data);
 
@@ -712,7 +712,7 @@
  */
 int net_context_recv(struct net_context *context,
 		     net_context_recv_cb_t cb,
-		     int32_t timeout,
+		     s32_t timeout,
 		     void *user_data);
 
 /**
diff --git a/include/net/net_if.h b/include/net/net_if.h
index eddffa8..ece74a0 100644
--- a/include/net/net_if.h
+++ b/include/net/net_if.h
@@ -58,7 +58,7 @@
 
 #if defined(CONFIG_NET_IPV6_DAD)
 	/** How many times we have done DAD */
-	uint8_t dad_count;
+	u8_t dad_count;
 #endif
 
 	/** Is the IP address valid forever */
@@ -75,12 +75,12 @@
  */
 struct net_if_mcast_addr {
 	/** Is this multicast IP address used or not */
-	uint8_t is_used : 1;
+	u8_t is_used : 1;
 
 	/** Did we join to this group */
-	uint8_t is_joined : 1;
+	u8_t is_joined : 1;
 
-	uint8_t _unused : 6;
+	u8_t _unused : 6;
 
 	/** IP address */
 	struct net_addr address;
@@ -100,7 +100,7 @@
 	struct in6_addr prefix;
 
 	/** Prefix length */
-	uint8_t len;
+	u8_t len;
 
 	/** Is the IP prefix valid forever */
 	bool is_infinite;
@@ -200,7 +200,7 @@
 	struct k_fifo tx_queue;
 
 	/** The hardware MTU */
-	uint16_t mtu;
+	u16_t mtu;
 
 #if defined(CONFIG_NET_OFFLOAD)
 	/** TCP/IP Offload functions.
@@ -229,24 +229,24 @@
 		struct k_delayed_work rs_timer;
 
 		/** Default reachable time (RFC 4861, page 52) */
-		uint32_t base_reachable_time;
+		u32_t base_reachable_time;
 
 		/** Reachable time (RFC 4861, page 20) */
-		uint32_t reachable_time;
+		u32_t reachable_time;
 
 		/** Retransmit timer (RFC 4861, page 52) */
-		uint32_t retrans_timer;
+		u32_t retrans_timer;
 
 		/** IPv6 hop limit */
-		uint8_t hop_limit;
+		u8_t hop_limit;
 
 #if defined(CONFIG_NET_IPV6_DAD)
 		/** IPv6 current duplicate address detection count */
-		uint8_t dad_count;
+		u8_t dad_count;
 #endif /* CONFIG_NET_IPV6_DAD */
 
 		/** RS count */
-		uint8_t rs_count;
+		u8_t rs_count;
 	} ipv6;
 #endif /* CONFIG_NET_IPV6 */
 
@@ -267,22 +267,22 @@
 		struct in_addr netmask;
 
 		/** IPv4 time-to-live */
-		uint8_t ttl;
+		u8_t ttl;
 	} ipv4;
 #endif /* CONFIG_NET_IPV4 */
 
 #if defined(CONFIG_NET_DHCPV4)
 	struct {
-		uint32_t xid;
+		u32_t xid;
 
 		/** IP address Lease time */
-		uint32_t lease_time;
+		u32_t lease_time;
 
 		/** IP address Renewal time */
-		uint32_t renewal_time;
+		u32_t renewal_time;
 
 		/** IP address Rebinding time */
-		uint32_t rebinding_time;
+		u32_t rebinding_time;
 
 		/** Server ID */
 		struct in_addr server_id;
@@ -308,7 +308,7 @@
 		enum net_dhcpv4_state state;
 
 		/** Number of attempts made for REQUEST and RENEWAL messages */
-		uint8_t attempts;
+		u8_t attempts;
 	} dhcpv4;
 #endif
 } __net_if_align;
@@ -345,7 +345,7 @@
  *
  * @return Return the link layer header size
  */
-static inline uint16_t net_if_get_ll_reserve(struct net_if *iface,
+static inline u16_t net_if_get_ll_reserve(struct net_if *iface,
 					     const struct in6_addr *dst_ip6)
 {
 	return iface->l2->reserve(iface, (void *)dst_ip6);
@@ -434,14 +434,14 @@
  * @brief Set a network interface's link address
  *
  * @param iface Pointer to a network interface structure
- * @param addr a pointer on a uint8_t buffer representing the address
+ * @param addr a pointer on a u8_t buffer representing the address
  * @param len length of the address buffer
  * @param type network bearer type of this link address
  *
  * @return 0 on success
  */
 static inline int net_if_set_link_addr(struct net_if *iface,
-				       uint8_t *addr, uint8_t len,
+				       u8_t *addr, u8_t len,
 				       enum net_link_type type)
 {
 	if (atomic_test_bit(iface->flags, NET_IF_UP)) {
@@ -462,7 +462,7 @@
  *
  * @return the MTU
  */
-static inline uint16_t net_if_get_mtu(struct net_if *iface)
+static inline u16_t net_if_get_mtu(struct net_if *iface)
 {
 	return iface->mtu;
 }
@@ -474,7 +474,7 @@
  * @param mtu New MTU, note that we store only 16 bit mtu value.
  */
 static inline void net_if_set_mtu(struct net_if *iface,
-				  uint16_t mtu)
+				  u16_t mtu)
 {
 	iface->mtu = mtu;
 }
@@ -583,7 +583,7 @@
 struct net_if_addr *net_if_ipv6_addr_add(struct net_if *iface,
 					 struct in6_addr *addr,
 					 enum net_addr_type addr_type,
-					 uint32_t vlifetime);
+					 u32_t vlifetime);
 
 /**
  * @brief Update validity lifetime time of an IPv6 address.
@@ -592,7 +592,7 @@
  * @param vlifetime Validity time for this address
  */
 void net_if_ipv6_addr_update_lifetime(struct net_if_addr *ifaddr,
-				      uint32_t vlifetime);
+				      u32_t vlifetime);
 
 /**
  * @brief Remove an IPv6 address from an interface
@@ -688,7 +688,7 @@
  */
 struct net_if_ipv6_prefix *net_if_ipv6_prefix_lookup(struct net_if *iface,
 						     struct in6_addr *addr,
-						     uint8_t len);
+						     u8_t len);
 
 /**
  * @brief Add a IPv6 prefix to an network interface.
@@ -702,8 +702,8 @@
  */
 struct net_if_ipv6_prefix *net_if_ipv6_prefix_add(struct net_if *iface,
 						  struct in6_addr *prefix,
-						  uint8_t len,
-						  uint32_t lifetime);
+						  u8_t len,
+						  u32_t lifetime);
 
 /**
  * @brief Remove an IPv6 prefix from an interface
@@ -715,7 +715,7 @@
  * @return True if successfully removed, false otherwise
  */
 bool net_if_ipv6_prefix_rm(struct net_if *iface, struct in6_addr *addr,
-			   uint8_t len);
+			   u8_t len);
 
 /**
  * @brief Set the infinite status of the prefix
@@ -736,7 +736,7 @@
  * @param lifetime Prefix lifetime in seconds
  */
 void net_if_ipv6_prefix_set_timer(struct net_if_ipv6_prefix *prefix,
-				  uint32_t lifetime);
+				  u32_t lifetime);
 
 /**
  * @brief Unset the prefix lifetime timer.
@@ -788,7 +788,7 @@
  * @param lifetime Lifetime of this router.
  */
 void net_if_ipv6_router_update_lifetime(struct net_if_router *router,
-					uint32_t lifetime);
+					u32_t lifetime);
 
 /**
  * @brief Add IPv6 router to the system.
@@ -801,7 +801,7 @@
  */
 struct net_if_router *net_if_ipv6_router_add(struct net_if *iface,
 					     struct in6_addr *addr,
-					     uint16_t router_lifetime);
+					     u16_t router_lifetime);
 
 /**
  * @brief Remove IPv6 router from the system.
@@ -820,7 +820,7 @@
  *
  * @return Hop limit
  */
-static inline uint8_t net_if_ipv6_get_hop_limit(struct net_if *iface)
+static inline u8_t net_if_ipv6_get_hop_limit(struct net_if *iface)
 {
 	return iface->ipv6.hop_limit;
 }
@@ -832,7 +832,7 @@
  * @param hop_limit New hop limit
  */
 static inline void net_ipv6_set_hop_limit(struct net_if *iface,
-					  uint8_t hop_limit)
+					  u8_t hop_limit)
 {
 	iface->ipv6.hop_limit = hop_limit;
 }
@@ -844,7 +844,7 @@
  * @param reachable_time New reachable time
  */
 static inline void net_if_ipv6_set_base_reachable_time(struct net_if *iface,
-						    uint32_t reachable_time)
+						    u32_t reachable_time)
 {
 	iface->ipv6.base_reachable_time = reachable_time;
 }
@@ -856,7 +856,7 @@
  *
  * @return Reachable timeout
  */
-static inline uint32_t net_if_ipv6_get_reachable_time(struct net_if *iface)
+static inline u32_t net_if_ipv6_get_reachable_time(struct net_if *iface)
 {
 	return iface->ipv6.reachable_time;
 }
@@ -868,7 +868,7 @@
  *
  * @return Reachable time
  */
-uint32_t net_if_ipv6_calc_reachable_time(struct net_if *iface);
+u32_t net_if_ipv6_calc_reachable_time(struct net_if *iface);
 
 /**
  * @brief Set IPv6 reachable time for a given interface. This requires
@@ -888,7 +888,7 @@
  * @param retrans_timer New retransmit timer
  */
 static inline void net_if_ipv6_set_retrans_timer(struct net_if *iface,
-						 uint32_t retrans_timer)
+						 u32_t retrans_timer)
 {
 	iface->ipv6.retrans_timer = retrans_timer;
 }
@@ -900,7 +900,7 @@
  *
  * @return Retransmit timer
  */
-static inline uint32_t net_if_ipv6_get_retrans_timer(struct net_if *iface)
+static inline u32_t net_if_ipv6_get_retrans_timer(struct net_if *iface)
 {
 	return iface->ipv6.retrans_timer;
 }
@@ -975,7 +975,7 @@
  *
  * @return Time-to-live
  */
-static inline uint8_t net_if_ipv4_get_ttl(struct net_if *iface)
+static inline u8_t net_if_ipv4_get_ttl(struct net_if *iface)
 {
 	return iface->ipv4.ttl;
 }
@@ -1004,7 +1004,7 @@
 struct net_if_addr *net_if_ipv4_addr_add(struct net_if *iface,
 					 struct in_addr *addr,
 					 enum net_addr_type addr_type,
-					 uint32_t vlifetime);
+					 u32_t vlifetime);
 
 /**
  * @brief Remove a IPv4 address from an interface
@@ -1042,7 +1042,7 @@
 struct net_if_router *net_if_ipv4_router_add(struct net_if *iface,
 					     struct in_addr *addr,
 					     bool is_default,
-					     uint16_t router_lifetime);
+					     u16_t router_lifetime);
 
 /**
  * @brief Check if the given IPv4 address belongs to local subnet.
@@ -1144,7 +1144,7 @@
  *
  * @return Pointer to interface or NULL if not found.
  */
-struct net_if *net_if_get_by_index(uint8_t index);
+struct net_if *net_if_get_by_index(u8_t index);
 
 /**
  * @brief Get interface index according to pointer
@@ -1153,7 +1153,7 @@
  *
  * @return Interface index
  */
-uint8_t net_if_get_by_iface(struct net_if *iface);
+u8_t net_if_get_by_iface(struct net_if *iface);
 
 /**
  * @typedef net_if_cb_t
diff --git a/include/net/net_ip.h b/include/net/net_ip.h
index e78e12f..0681e39 100644
--- a/include/net/net_ip.h
+++ b/include/net/net_ip.h
@@ -63,9 +63,9 @@
 /** IPv6 address structure */
 struct in6_addr {
 	union {
-		uint8_t		u6_addr8[16];
-		uint16_t	u6_addr16[8]; /* In big endian */
-		uint32_t	u6_addr32[4]; /* In big endian */
+		u8_t		u6_addr8[16];
+		u16_t	u6_addr16[8]; /* In big endian */
+		u32_t	u6_addr32[4]; /* In big endian */
 	} in6_u;
 #define s6_addr			in6_u.u6_addr8
 #define s6_addr16		in6_u.u6_addr16
@@ -75,9 +75,9 @@
 /** IPv4 address */
 struct in_addr {
 	union {
-		uint8_t		u4_addr8[4];
-		uint16_t	u4_addr16[2]; /* In big endian */
-		uint32_t	u4_addr32[1]; /* In big endian */
+		u8_t		u4_addr8[4];
+		u16_t	u4_addr16[2]; /* In big endian */
+		u32_t	u4_addr32[1]; /* In big endian */
 	} in4_u;
 #define s4_addr			in4_u.u4_addr8
 #define s4_addr16		in4_u.u4_addr16
@@ -95,27 +95,27 @@
  */
 struct sockaddr_in6 {
 	sa_family_t		sin6_family;   /* AF_INET6               */
-	uint16_t		sin6_port;     /* Port number            */
+	u16_t		sin6_port;     /* Port number            */
 	struct in6_addr		sin6_addr;     /* IPv6 address           */
-	uint8_t			sin6_scope_id; /* interfaces for a scope */
+	u8_t			sin6_scope_id; /* interfaces for a scope */
 };
 
 struct sockaddr_in6_ptr {
 	sa_family_t		sin6_family;   /* AF_INET6               */
-	uint16_t		sin6_port;     /* Port number            */
+	u16_t		sin6_port;     /* Port number            */
 	struct in6_addr		*sin6_addr;    /* IPv6 address           */
-	uint8_t			sin6_scope_id; /* interfaces for a scope */
+	u8_t			sin6_scope_id; /* interfaces for a scope */
 };
 
 struct sockaddr_in {
 	sa_family_t		sin_family;    /* AF_INET      */
-	uint16_t		sin_port;      /* Port number  */
+	u16_t		sin_port;      /* Port number  */
 	struct in_addr		sin_addr;      /* IPv4 address */
 };
 
 struct sockaddr_in_ptr {
 	sa_family_t		sin_family;    /* AF_INET      */
-	uint16_t		sin_port;      /* Port number  */
+	u16_t		sin_port;      /* Port number  */
 	struct in_addr		*sin_addr;     /* IPv4 address */
 };
 
@@ -184,9 +184,9 @@
 	/** IPv6/IPv4 local address */
 	struct net_addr *local_addr;
 	/** UDP/TCP remote port */
-	uint16_t remote_port;
+	u16_t remote_port;
 	/** UDP/TCP local port */
-	uint16_t local_port;
+	u16_t local_port;
 	/** IP protocol */
 	enum net_ip_protocol ip_proto;
 };
@@ -234,60 +234,60 @@
 };
 
 struct net_ipv6_hdr {
-	uint8_t vtc;
-	uint8_t tcflow;
-	uint16_t flow;
-	uint8_t len[2];
-	uint8_t nexthdr;
-	uint8_t hop_limit;
+	u8_t vtc;
+	u8_t tcflow;
+	u16_t flow;
+	u8_t len[2];
+	u8_t nexthdr;
+	u8_t hop_limit;
 	struct in6_addr src;
 	struct in6_addr dst;
 } __packed;
 
 struct net_ipv6_frag_hdr {
-	uint8_t nexthdr;
-	uint8_t reserved;
-	uint16_t offset;
-	uint32_t id;
+	u8_t nexthdr;
+	u8_t reserved;
+	u16_t offset;
+	u32_t id;
 } __packed;
 
 struct net_ipv4_hdr {
-	uint8_t vhl;
-	uint8_t tos;
-	uint8_t len[2];
-	uint8_t id[2];
-	uint8_t offset[2];
-	uint8_t ttl;
-	uint8_t proto;
-	uint16_t chksum;
+	u8_t vhl;
+	u8_t tos;
+	u8_t len[2];
+	u8_t id[2];
+	u8_t offset[2];
+	u8_t ttl;
+	u8_t proto;
+	u16_t chksum;
 	struct in_addr src;
 	struct in_addr dst;
 } __packed;
 
 struct net_icmp_hdr {
-	uint8_t type;
-	uint8_t code;
-	uint16_t chksum;
+	u8_t type;
+	u8_t code;
+	u16_t chksum;
 } __packed;
 
 struct net_udp_hdr {
-	uint16_t src_port;
-	uint16_t dst_port;
-	uint16_t len;
-	uint16_t chksum;
+	u16_t src_port;
+	u16_t dst_port;
+	u16_t len;
+	u16_t chksum;
 } __packed;
 
 struct net_tcp_hdr {
-	uint16_t src_port;
-	uint16_t dst_port;
-	uint8_t seq[4];
-	uint8_t ack[4];
-	uint8_t offset;
-	uint8_t flags;
-	uint8_t wnd[2];
-	uint16_t chksum;
-	uint8_t urg[2];
-	uint8_t optdata[0];
+	u16_t src_port;
+	u16_t dst_port;
+	u8_t seq[4];
+	u8_t ack[4];
+	u8_t offset;
+	u8_t flags;
+	u8_t wnd[2];
+	u16_t chksum;
+	u8_t urg[2];
+	u8_t optdata[0];
 } __packed;
 
 #define NET_UDPH_LEN	8			/* Size of UDP header */
@@ -376,14 +376,14 @@
  *
  * @return True if IPv6 prefixes are the same, False otherwise.
  */
-static inline bool net_is_ipv6_prefix(const uint8_t *addr1,
-				      const uint8_t *addr2,
-				      uint8_t length)
+static inline bool net_is_ipv6_prefix(const u8_t *addr1,
+				      const u8_t *addr2,
+				      u8_t length)
 {
-	uint8_t bits = 128 - length;
-	uint8_t bytes = length / 8;
-	uint8_t remain = bits % 8;
-	uint8_t mask;
+	u8_t bits = 128 - length;
+	u8_t bytes = length / 8;
+	u8_t remain = bits % 8;
+	u8_t mask;
 
 	if (length > 128) {
 		return false;
@@ -633,10 +633,10 @@
  *  @param addr7 16-bit word which is part of the address
  */
 static inline void net_ipv6_addr_create(struct in6_addr *addr,
-					uint16_t addr0, uint16_t addr1,
-					uint16_t addr2, uint16_t addr3,
-					uint16_t addr4, uint16_t addr5,
-					uint16_t addr6, uint16_t addr7)
+					u16_t addr0, u16_t addr1,
+					u16_t addr2, u16_t addr3,
+					u16_t addr4, u16_t addr5,
+					u16_t addr6, u16_t addr7)
 {
 	UNALIGNED_PUT(htons(addr0), &addr->s6_addr16[0]);
 	UNALIGNED_PUT(htons(addr1), &addr->s6_addr16[1]);
diff --git a/include/net/net_l2.h b/include/net/net_l2.h
index 7a73422..253cf89 100644
--- a/include/net/net_l2.h
+++ b/include/net/net_l2.h
@@ -39,7 +39,7 @@
 	 * reserve as headroom in a net packet. Such space is relevant to L2
 	 * layer only.
 	 */
-	uint16_t (*reserve)(struct net_if *iface, void *data);
+	u16_t (*reserve)(struct net_if *iface, void *data);
 
 	/**
 	 * This function is used to enable/disable traffic over a network
diff --git a/include/net/net_linkaddr.h b/include/net/net_linkaddr.h
index 9ea76aa..336d306 100644
--- a/include/net/net_linkaddr.h
+++ b/include/net/net_linkaddr.h
@@ -29,7 +29,7 @@
 /**
  * Type of the link address. This indicates the network technology that this
  * address is used in. Note that in order to save space we store the value
- * into a uint8_t variable, so please do not introduce any values > 255 in
+ * into a u8_t variable, so please do not introduce any values > 255 in
  * this enum.
  */
 enum net_link_type {
@@ -47,13 +47,13 @@
  */
 struct net_linkaddr {
 	/** The array of byte representing the address */
-	uint8_t *addr;
+	u8_t *addr;
 
 	/** Length of that address array */
-	uint8_t len;
+	u8_t len;
 
 	/** What kind of address is this for */
-	uint8_t type;
+	u8_t type;
 };
 
 /**
@@ -62,19 +62,19 @@
  *  Used to hold the link address information. This variant is needed
  *  when we have to store the link layer address.
  *
- *  Note that you cannot cast this to net_linkaddr as uint8_t * is
- *  handled differently than uint8_t addr[] and the fields are purposely
+ *  Note that you cannot cast this to net_linkaddr as u8_t * is
+ *  handled differently than u8_t addr[] and the fields are purposely
  *  in a different order.
  */
 struct net_linkaddr_storage {
 	/** What kind of address is this for */
-	uint8_t type;
+	u8_t type;
 
 	/** The real length of the ll address. */
-	uint8_t len;
+	u8_t len;
 
 	/** The array of bytes representing the address */
-	uint8_t addr[NET_LINK_ADDR_MAX_LENGTH];
+	u8_t addr[NET_LINK_ADDR_MAX_LENGTH];
 };
 
 /**
@@ -109,7 +109,7 @@
  * This value should always be <= NET_LINK_ADDR_MAX_LENGTH.
  */
 static inline int net_linkaddr_set(struct net_linkaddr_storage *lladdr_store,
-				   uint8_t *new_addr, uint8_t new_len)
+				   u8_t *new_addr, u8_t new_len)
 {
 	if (!lladdr_store || !new_addr) {
 		return -EINVAL;
diff --git a/include/net/net_mgmt.h b/include/net/net_mgmt.h
index ebfbed7..6fefabe 100644
--- a/include/net/net_mgmt.h
+++ b/include/net/net_mgmt.h
@@ -78,7 +78,7 @@
  *        NULL otherwise.
  * @param len Length in byte of the memory pointed by data.
  */
-typedef int (*net_mgmt_request_handler_t)(uint32_t mgmt_request,
+typedef int (*net_mgmt_request_handler_t)(u32_t mgmt_request,
 					  struct net_if *iface,
 					  void *data, size_t len);
 
@@ -86,7 +86,7 @@
 	net_mgmt_##_mgmt_request(_mgmt_request, _iface, _data, _len)
 
 #define NET_MGMT_DEFINE_REQUEST_HANDLER(_mgmt_request)			\
-	extern int net_mgmt_##_mgmt_request(uint32_t mgmt_request,	\
+	extern int net_mgmt_##_mgmt_request(u32_t mgmt_request,	\
 					    struct net_if *iface,	\
 					    void *data, size_t len)
 
@@ -100,12 +100,12 @@
  * @brief Define the user's callback handler function signature
  * @param "struct net_mgmt_event_callback *cb"
  *        Original struct net_mgmt_event_callback owning this handler.
- * @param "uint32_t mgmt_event" The network event being notified.
+ * @param "u32_t mgmt_event" The network event being notified.
  * @param "struct net_if *iface" A pointer on a struct net_if to which the
  *        the event belongs to, if it's an event on an iface. NULL otherwise.
  */
 typedef void (*net_mgmt_event_handler_t)(struct net_mgmt_event_callback *cb,
-					 uint32_t mgmt_event,
+					 u32_t mgmt_event,
 					 struct net_if *iface);
 
 /**
@@ -141,11 +141,11 @@
 		 * modified whenever necessary by the owner, and thus will
 		 * affect the handler being called or not.
 		 */
-		uint32_t event_mask;
+		u32_t event_mask;
 		/** Internal place holder when a synchronous event wait is
 		 * successfully unlocked on a event.
 		 */
-		uint32_t raised_event;
+		u32_t raised_event;
 	};
 };
 
@@ -159,7 +159,7 @@
 static inline
 void net_mgmt_init_event_callback(struct net_mgmt_event_callback *cb,
 				  net_mgmt_event_handler_t handler,
-				  uint32_t mgmt_event_mask)
+				  u32_t mgmt_event_mask)
 {
 	__ASSERT(cb, "Callback pointer should not be NULL");
 	__ASSERT(handler, "Handler pointer should not be NULL");
@@ -186,12 +186,12 @@
  * @param iface a valid pointer on a struct net_if if only the event is
  *        based on an iface. NULL otherwise.
  */
-void net_mgmt_event_notify(uint32_t mgmt_event, struct net_if *iface);
+void net_mgmt_event_notify(u32_t mgmt_event, struct net_if *iface);
 
 /**
  * @brief Used to wait synchronously on an event mask
  * @param mgmt_event_mask A mask of relevant events to wait on.
- * @param raised_event a pointer on a uint32_t to get which event from
+ * @param raised_event a pointer on a u32_t to get which event from
  *        the mask generated the event. Can be NULL if the caller is not
  *        interested in that information.
  * @param iface a pointer on a place holder for the iface on which the
@@ -205,8 +205,8 @@
  *         be specifically returned if the timeout kick-in instead of an
  *         actual event.
  */
-int net_mgmt_event_wait(uint32_t mgmt_event_mask,
-			uint32_t *raised_event,
+int net_mgmt_event_wait(u32_t mgmt_event_mask,
+			u32_t *raised_event,
 			struct net_if **iface,
 			int timeout);
 
@@ -216,7 +216,7 @@
  * @param mgmt_event_mask A mask of relevant events to wait on. Listened
  *        to events should be relevant to iface events and thus have the bit
  *        NET_MGMT_IFACE_BIT set.
- * @param raised_event a pointer on a uint32_t to get which event from
+ * @param raised_event a pointer on a u32_t to get which event from
  *        the mask generated the event. Can be NULL if the caller is not
  *        interested in that information.
  * @param timeout a delay in milliseconds. K_FOREVER can be used to wait
@@ -227,8 +227,8 @@
  *         actual event.
  */
 int net_mgmt_event_wait_on_iface(struct net_if *iface,
-				 uint32_t mgmt_event_mask,
-				 uint32_t *raised_event,
+				 u32_t mgmt_event_mask,
+				 u32_t *raised_event,
 				 int timeout);
 
 /**
@@ -242,8 +242,8 @@
 #define net_mgmt_event_notify(...)
 #define net_mgmt_event_init(...)
 
-static inline int net_mgmt_event_wait(uint32_t mgmt_event_mask,
-				      uint32_t *raised_event,
+static inline int net_mgmt_event_wait(u32_t mgmt_event_mask,
+				      u32_t *raised_event,
 				      struct net_if **iface,
 				      int timeout)
 {
@@ -251,8 +251,8 @@
 }
 
 static inline int net_mgmt_event_wait_on_iface(struct net_if *iface,
-					       uint32_t mgmt_event_mask,
-					       uint32_t *raised_event,
+					       u32_t mgmt_event_mask,
+					       u32_t *raised_event,
 					       int timeout)
 {
 	return 0;
diff --git a/include/net/net_offload.h b/include/net/net_offload.h
index c957f29..6e7e11b 100644
--- a/include/net/net_offload.h
+++ b/include/net/net_offload.h
@@ -55,7 +55,7 @@
 		       const struct sockaddr *addr,
 		       socklen_t addrlen,
 		       net_context_connect_cb_t cb,
-		       int32_t timeout,
+		       s32_t timeout,
 		       void *user_data);
 
 	/**
@@ -64,7 +64,7 @@
 	 */
 	int (*accept)(struct net_context *context,
 		      net_tcp_accept_cb_t cb,
-		      int32_t timeout,
+		      s32_t timeout,
 		      void *user_data);
 
 	/**
@@ -72,7 +72,7 @@
 	 */
 	int (*send)(struct net_pkt *pkt,
 		    net_context_send_cb_t cb,
-		    int32_t timeout,
+		    s32_t timeout,
 		    void *token,
 		    void *user_data);
 
@@ -83,7 +83,7 @@
 		      const struct sockaddr *dst_addr,
 		      socklen_t addrlen,
 		      net_context_send_cb_t cb,
-		      int32_t timeout,
+		      s32_t timeout,
 		      void *token,
 		      void *user_data);
 
@@ -93,7 +93,7 @@
 	 */
 	int (*recv)(struct net_context *context,
 		    net_context_recv_cb_t cb,
-		    int32_t timeout,
+		    s32_t timeout,
 		    void *user_data);
 
 	/**
@@ -214,7 +214,7 @@
 					    const struct sockaddr *addr,
 					    socklen_t addrlen,
 					    net_context_connect_cb_t cb,
-					    int32_t timeout,
+					    s32_t timeout,
 					    void *user_data)
 {
 	NET_ASSERT(iface);
@@ -255,7 +255,7 @@
 static inline int net_offload_accept(struct net_if *iface,
 					   struct net_context *context,
 					   net_tcp_accept_cb_t cb,
-					   int32_t timeout,
+					   s32_t timeout,
 					   void *user_data)
 {
 	NET_ASSERT(iface);
@@ -295,7 +295,7 @@
 static inline int net_offload_send(struct net_if *iface,
 					 struct net_pkt *pkt,
 					 net_context_send_cb_t cb,
-					 int32_t timeout,
+					 s32_t timeout,
 					 void *token,
 					 void *user_data)
 {
@@ -340,7 +340,7 @@
 					   const struct sockaddr *dst_addr,
 					   socklen_t addrlen,
 					   net_context_send_cb_t cb,
-					   int32_t timeout,
+					   s32_t timeout,
 					   void *token,
 					   void *user_data)
 {
@@ -388,7 +388,7 @@
 static inline int net_offload_recv(struct net_if *iface,
 					 struct net_context *context,
 					 net_context_recv_cb_t cb,
-					 int32_t timeout,
+					 s32_t timeout,
 					 void *user_data)
 {
 	NET_ASSERT(iface);
diff --git a/include/net/net_pkt.h b/include/net/net_pkt.h
index 3d28540..53339f7 100644
--- a/include/net/net_pkt.h
+++ b/include/net/net_pkt.h
@@ -56,56 +56,56 @@
 
 	/** @cond ignore */
 
-	uint8_t *appdata;	/* application data starts here */
-	uint8_t *next_hdr;	/* where is the next header */
+	u8_t *appdata;	/* application data starts here */
+	u8_t *next_hdr;	/* where is the next header */
 
 	/* Filled by layer 2 when network packet is received. */
 	struct net_linkaddr lladdr_src;
 	struct net_linkaddr lladdr_dst;
 
-	uint16_t appdatalen;
-	uint8_t ll_reserve;	/* link layer header length */
-	uint8_t ip_hdr_len;	/* pre-filled in order to avoid func call */
+	u16_t appdatalen;
+	u8_t ll_reserve;	/* link layer header length */
+	u8_t ip_hdr_len;	/* pre-filled in order to avoid func call */
 
 #if defined(CONFIG_NET_TCP)
 	sys_snode_t sent_list;
 #endif
 
-	uint8_t sent       : 1;	/* Is this sent or not
+	u8_t sent       : 1;	/* Is this sent or not
 				 * Used only if defined(CONFIG_NET_TCP)
 				 */
-	uint8_t forwarding : 1;	/* Are we forwarding this pkt
+	u8_t forwarding : 1;	/* Are we forwarding this pkt
 				 * Used only if defined(CONFIG_NET_ROUTE)
 				 */
-	uint8_t family     : 4;	/* IPv4 vs IPv6 */
-	uint8_t _unused    : 4;
+	u8_t family     : 4;	/* IPv4 vs IPv6 */
+	u8_t _unused    : 4;
 
 #if defined(CONFIG_NET_IPV6)
-	uint8_t ipv6_hop_limit;	/* IPv6 hop limit for this network packet. */
-	uint8_t ipv6_ext_len;	/* length of extension headers */
-	uint8_t ipv6_ext_opt_len; /* IPv6 ND option length */
+	u8_t ipv6_hop_limit;	/* IPv6 hop limit for this network packet. */
+	u8_t ipv6_ext_len;	/* length of extension headers */
+	u8_t ipv6_ext_opt_len; /* IPv6 ND option length */
 
 	/* Where is the start of the last header before payload data
 	 * in IPv6 packet. This is offset value from start of the IPv6
 	 * packet. Note that this value should be updated by who ever
 	 * adds IPv6 extension headers to the network packet.
 	 */
-	uint16_t ipv6_prev_hdr_start;
+	u16_t ipv6_prev_hdr_start;
 
 #if defined(CONFIG_NET_IPV6_FRAGMENT)
-	uint16_t ipv6_fragment_offset;	/* Fragment offset of this packet */
-	uint32_t ipv6_fragment_id;	/* Fragment id */
-	uint8_t *ipv6_frag_hdr_start;	/* Where starts the fragment header */
+	u16_t ipv6_fragment_offset;	/* Fragment offset of this packet */
+	u32_t ipv6_fragment_id;	/* Fragment id */
+	u8_t *ipv6_frag_hdr_start;	/* Where starts the fragment header */
 #endif /* CONFIG_NET_IPV6_FRAGMENT */
 #endif /* CONFIG_NET_IPV6 */
 
 #if defined(CONFIG_NET_L2_IEEE802154)
-	uint8_t ieee802154_rssi;
+	u8_t ieee802154_rssi;
 #endif
 	/* @endcond */
 
 	/** Reference counter */
-	uint8_t ref;
+	u8_t ref;
 };
 
 /** @cond ignore */
@@ -155,38 +155,38 @@
 	pkt->lladdr_dst.type = iface->link_addr.type;
 }
 
-static inline uint8_t net_pkt_family(struct net_pkt *pkt)
+static inline u8_t net_pkt_family(struct net_pkt *pkt)
 {
 	return pkt->family;
 }
 
-static inline void net_pkt_set_family(struct net_pkt *pkt, uint8_t family)
+static inline void net_pkt_set_family(struct net_pkt *pkt, u8_t family)
 {
 	pkt->family = family;
 }
 
-static inline uint8_t net_pkt_ip_hdr_len(struct net_pkt *pkt)
+static inline u8_t net_pkt_ip_hdr_len(struct net_pkt *pkt)
 {
 	return pkt->ip_hdr_len;
 }
 
-static inline void net_pkt_set_ip_hdr_len(struct net_pkt *pkt, uint8_t len)
+static inline void net_pkt_set_ip_hdr_len(struct net_pkt *pkt, u8_t len)
 {
 	pkt->ip_hdr_len = len;
 }
 
-static inline uint8_t *net_pkt_next_hdr(struct net_pkt *pkt)
+static inline u8_t *net_pkt_next_hdr(struct net_pkt *pkt)
 {
 	return pkt->next_hdr;
 }
 
-static inline void net_pkt_set_next_hdr(struct net_pkt *pkt, uint8_t *hdr)
+static inline void net_pkt_set_next_hdr(struct net_pkt *pkt, u8_t *hdr)
 {
 	pkt->next_hdr = hdr;
 }
 
 #if defined(CONFIG_NET_TCP)
-static inline uint8_t net_pkt_sent(struct net_pkt *pkt)
+static inline u8_t net_pkt_sent(struct net_pkt *pkt)
 {
 	return pkt->sent;
 }
@@ -215,79 +215,79 @@
 #endif
 
 #if defined(CONFIG_NET_IPV6)
-static inline uint8_t net_pkt_ipv6_ext_opt_len(struct net_pkt *pkt)
+static inline u8_t net_pkt_ipv6_ext_opt_len(struct net_pkt *pkt)
 {
 	return pkt->ipv6_ext_opt_len;
 }
 
 static inline void net_pkt_set_ipv6_ext_opt_len(struct net_pkt *pkt,
-						uint8_t len)
+						u8_t len)
 {
 	pkt->ipv6_ext_opt_len = len;
 }
 
-static inline uint8_t net_pkt_ipv6_ext_len(struct net_pkt *pkt)
+static inline u8_t net_pkt_ipv6_ext_len(struct net_pkt *pkt)
 {
 	return pkt->ipv6_ext_len;
 }
 
-static inline void net_pkt_set_ipv6_ext_len(struct net_pkt *pkt, uint8_t len)
+static inline void net_pkt_set_ipv6_ext_len(struct net_pkt *pkt, u8_t len)
 {
 	pkt->ipv6_ext_len = len;
 }
 
-static inline uint16_t net_pkt_ipv6_hdr_prev(struct net_pkt *pkt)
+static inline u16_t net_pkt_ipv6_hdr_prev(struct net_pkt *pkt)
 {
 	return pkt->ipv6_prev_hdr_start;
 }
 
 static inline void net_pkt_set_ipv6_hdr_prev(struct net_pkt *pkt,
-					     uint16_t offset)
+					     u16_t offset)
 {
 	pkt->ipv6_prev_hdr_start = offset;
 }
 
-static inline uint8_t net_pkt_ipv6_hop_limit(struct net_pkt *pkt)
+static inline u8_t net_pkt_ipv6_hop_limit(struct net_pkt *pkt)
 {
 	return pkt->ipv6_hop_limit;
 }
 
 static inline void net_pkt_set_ipv6_hop_limit(struct net_pkt *pkt,
-					      uint8_t hop_limit)
+					      u8_t hop_limit)
 {
 	pkt->ipv6_hop_limit = hop_limit;
 }
 
 #if defined(CONFIG_NET_IPV6_FRAGMENT)
-static inline uint8_t *net_pkt_ipv6_fragment_start(struct net_pkt *pkt)
+static inline u8_t *net_pkt_ipv6_fragment_start(struct net_pkt *pkt)
 {
 	return pkt->ipv6_frag_hdr_start;
 }
 
 static inline void net_pkt_set_ipv6_fragment_start(struct net_pkt *pkt,
-						   uint8_t *start)
+						   u8_t *start)
 {
 	pkt->ipv6_frag_hdr_start = start;
 }
 
-static inline uint16_t net_pkt_ipv6_fragment_offset(struct net_pkt *pkt)
+static inline u16_t net_pkt_ipv6_fragment_offset(struct net_pkt *pkt)
 {
 	return pkt->ipv6_fragment_offset;
 }
 
 static inline void net_pkt_set_ipv6_fragment_offset(struct net_pkt *pkt,
-						    uint16_t offset)
+						    u16_t offset)
 {
 	pkt->ipv6_fragment_offset = offset;
 }
 
-static inline uint32_t net_pkt_ipv6_fragment_id(struct net_pkt *pkt)
+static inline u32_t net_pkt_ipv6_fragment_id(struct net_pkt *pkt)
 {
 	return pkt->ipv6_fragment_id;
 }
 
 static inline void net_pkt_set_ipv6_fragment_id(struct net_pkt *pkt,
-						uint32_t id)
+						u32_t id)
 {
 	pkt->ipv6_fragment_id = id;
 }
@@ -302,60 +302,60 @@
 	return net_buf_frags_len(pkt->frags);
 }
 
-static inline uint8_t *net_pkt_ip_data(struct net_pkt *pkt)
+static inline u8_t *net_pkt_ip_data(struct net_pkt *pkt)
 {
 	return pkt->frags->data;
 }
 
-static inline uint8_t *net_pkt_udp_data(struct net_pkt *pkt)
+static inline u8_t *net_pkt_udp_data(struct net_pkt *pkt)
 {
 	return &pkt->frags->data[net_pkt_ip_hdr_len(pkt) +
 				 net_pkt_ipv6_ext_len(pkt)];
 }
 
-static inline uint8_t *net_pkt_tcp_data(struct net_pkt *pkt)
+static inline u8_t *net_pkt_tcp_data(struct net_pkt *pkt)
 {
 	return &pkt->frags->data[net_pkt_ip_hdr_len(pkt) +
 				 net_pkt_ipv6_ext_len(pkt)];
 }
 
-static inline uint8_t *net_pkt_icmp_data(struct net_pkt *pkt)
+static inline u8_t *net_pkt_icmp_data(struct net_pkt *pkt)
 {
 	return &pkt->frags->data[net_pkt_ip_hdr_len(pkt) +
 				 net_pkt_ipv6_ext_len(pkt)];
 }
 
-static inline uint8_t *net_pkt_appdata(struct net_pkt *pkt)
+static inline u8_t *net_pkt_appdata(struct net_pkt *pkt)
 {
 	return pkt->appdata;
 }
 
-static inline void net_pkt_set_appdata(struct net_pkt *pkt, uint8_t *data)
+static inline void net_pkt_set_appdata(struct net_pkt *pkt, u8_t *data)
 {
 	pkt->appdata = data;
 }
 
-static inline uint16_t net_pkt_appdatalen(struct net_pkt *pkt)
+static inline u16_t net_pkt_appdatalen(struct net_pkt *pkt)
 {
 	return pkt->appdatalen;
 }
 
-static inline void net_pkt_set_appdatalen(struct net_pkt *pkt, uint16_t len)
+static inline void net_pkt_set_appdatalen(struct net_pkt *pkt, u16_t len)
 {
 	pkt->appdatalen = len;
 }
 
-static inline uint8_t net_pkt_ll_reserve(struct net_pkt *pkt)
+static inline u8_t net_pkt_ll_reserve(struct net_pkt *pkt)
 {
 	return pkt->ll_reserve;
 }
 
-static inline void net_pkt_set_ll_reserve(struct net_pkt *pkt, uint8_t len)
+static inline void net_pkt_set_ll_reserve(struct net_pkt *pkt, u8_t len)
 {
 	pkt->ll_reserve = len;
 }
 
-static inline uint8_t *net_pkt_ll(struct net_pkt *pkt)
+static inline u8_t *net_pkt_ll(struct net_pkt *pkt)
 {
 	return net_pkt_ip_data(pkt) - net_pkt_ll_reserve(pkt);
 }
@@ -379,20 +379,20 @@
 
 static inline void net_pkt_ll_swap(struct net_pkt *pkt)
 {
-	uint8_t *addr = net_pkt_ll_src(pkt)->addr;
+	u8_t *addr = net_pkt_ll_src(pkt)->addr;
 
 	net_pkt_ll_src(pkt)->addr = net_pkt_ll_dst(pkt)->addr;
 	net_pkt_ll_dst(pkt)->addr = addr;
 }
 
 #if defined(CONFIG_NET_L2_IEEE802154)
-static inline uint8_t net_pkt_ieee802154_rssi(struct net_pkt *pkt)
+static inline u8_t net_pkt_ieee802154_rssi(struct net_pkt *pkt)
 {
 	return pkt->ieee802154_rssi;
 }
 
 static inline void net_pkt_set_ieee802154_rssi(struct net_pkt *pkt,
-						uint8_t rssi)
+						u8_t rssi)
 {
 	pkt->ieee802154_rssi = rssi;
 }
@@ -441,8 +441,8 @@
  */
 
 struct net_pkt *net_pkt_get_reserve_debug(struct k_mem_slab *slab,
-					  uint16_t reserve_head,
-					  int32_t timeout,
+					  u16_t reserve_head,
+					  s32_t timeout,
 					  const char *caller,
 					  int line);
 #define net_pkt_get_reserve(slab, reserve_head, timeout)		\
@@ -450,8 +450,8 @@
 				  __func__, __LINE__)
 
 struct net_buf *net_pkt_get_reserve_data_debug(struct net_buf_pool *pool,
-					       uint16_t reserve_head,
-					       int32_t timeout,
+					       u16_t reserve_head,
+					       s32_t timeout,
 					       const char *caller,
 					       int line);
 
@@ -460,51 +460,51 @@
 				  __func__, __LINE__)
 
 struct net_pkt *net_pkt_get_rx_debug(struct net_context *context,
-				     int32_t timeout,
+				     s32_t timeout,
 				     const char *caller, int line);
 #define net_pkt_get_rx(context, timeout)				\
 	net_pkt_get_rx_debug(context, timeout, __func__, __LINE__)
 
 struct net_pkt *net_pkt_get_tx_debug(struct net_context *context,
-				     int32_t timeout,
+				     s32_t timeout,
 				     const char *caller, int line);
 #define net_pkt_get_tx(context, timeout)				\
 	net_pkt_get_tx_debug(context, timeout, __func__, __LINE__)
 
 struct net_buf *net_pkt_get_data_debug(struct net_context *context,
-				       int32_t timeout,
+				       s32_t timeout,
 				       const char *caller, int line);
 #define net_pkt_get_data(context, timeout)				\
 	net_pkt_get_data_debug(context, timeout, __func__, __LINE__)
 
-struct net_pkt *net_pkt_get_reserve_rx_debug(uint16_t reserve_head,
-					     int32_t timeout,
+struct net_pkt *net_pkt_get_reserve_rx_debug(u16_t reserve_head,
+					     s32_t timeout,
 					     const char *caller, int line);
 #define net_pkt_get_reserve_rx(res, timeout)				\
 	net_pkt_get_reserve_rx_debug(res, timeout, __func__, __LINE__)
 
-struct net_pkt *net_pkt_get_reserve_tx_debug(uint16_t reserve_head,
-					     int32_t timeout,
+struct net_pkt *net_pkt_get_reserve_tx_debug(u16_t reserve_head,
+					     s32_t timeout,
 					     const char *caller, int line);
 #define net_pkt_get_reserve_tx(res, timeout)				\
 	net_pkt_get_reserve_tx_debug(res, timeout, __func__, __LINE__)
 
-struct net_buf *net_pkt_get_reserve_rx_data_debug(uint16_t reserve_head,
-						  int32_t timeout,
+struct net_buf *net_pkt_get_reserve_rx_data_debug(u16_t reserve_head,
+						  s32_t timeout,
 						  const char *caller,
 						  int line);
 #define net_pkt_get_reserve_rx_data(res, timeout)			\
 	net_pkt_get_reserve_rx_data_debug(res, timeout, __func__, __LINE__)
 
-struct net_buf *net_pkt_get_reserve_tx_data_debug(uint16_t reserve_head,
-						  int32_t timeout,
+struct net_buf *net_pkt_get_reserve_tx_data_debug(u16_t reserve_head,
+						  s32_t timeout,
 						  const char *caller,
 						  int line);
 #define net_pkt_get_reserve_tx_data(res, timeout)			\
 	net_pkt_get_reserve_tx_data_debug(res, timeout, __func__, __LINE__)
 
 struct net_buf *net_pkt_get_frag_debug(struct net_pkt *pkt,
-				       int32_t timeout,
+				       s32_t timeout,
 				       const char *caller, int line);
 #define net_pkt_get_frag(pkt, timeout)					\
 	net_pkt_get_frag_debug(pkt, timeout, __func__, __LINE__)
@@ -570,8 +570,8 @@
  * @return Network packet if successful, NULL otherwise.
  */
 struct net_pkt *net_pkt_get_reserve(struct k_mem_slab *slab,
-				    uint16_t reserve_head,
-				    int32_t timeout);
+				    u16_t reserve_head,
+				    s32_t timeout);
 
 /**
  * @brief Get packet from the RX packet slab.
@@ -588,7 +588,7 @@
  * @return Network packet if successful, NULL otherwise.
  */
 struct net_pkt *net_pkt_get_rx(struct net_context *context,
-			       int32_t timeout);
+			       s32_t timeout);
 
 /**
  * @brief Get packet from the TX packets slab.
@@ -606,7 +606,7 @@
  * @return Network packet if successful, NULL otherwise.
  */
 struct net_pkt *net_pkt_get_tx(struct net_context *context,
-			       int32_t timeout);
+			       s32_t timeout);
 
 /**
  * @brief Get buffer from the DATA buffers pool.
@@ -624,7 +624,7 @@
  * @return Network buffer if successful, NULL otherwise.
  */
 struct net_buf *net_pkt_get_data(struct net_context *context,
-				 int32_t timeout);
+				 s32_t timeout);
 
 /**
  * @brief Get RX packet from slab but also reserve headroom for
@@ -641,8 +641,8 @@
  *
  * @return Network packet if successful, NULL otherwise.
  */
-struct net_pkt *net_pkt_get_reserve_rx(uint16_t reserve_head,
-				       int32_t timeout);
+struct net_pkt *net_pkt_get_reserve_rx(u16_t reserve_head,
+				       s32_t timeout);
 
 /**
  * @brief Get TX packet from slab but also reserve headroom for
@@ -659,8 +659,8 @@
  *
  * @return Network packet if successful, NULL otherwise.
  */
-struct net_pkt *net_pkt_get_reserve_tx(uint16_t reserve_head,
-				       int32_t timeout);
+struct net_pkt *net_pkt_get_reserve_tx(u16_t reserve_head,
+				       s32_t timeout);
 
 /**
  * @brief Get RX DATA buffer from pool but also reserve headroom for
@@ -677,8 +677,8 @@
  *
  * @return Network buffer if successful, NULL otherwise.
  */
-struct net_buf *net_pkt_get_reserve_rx_data(uint16_t reserve_head,
-					    int32_t timeout);
+struct net_buf *net_pkt_get_reserve_rx_data(u16_t reserve_head,
+					    s32_t timeout);
 
 /**
  * @brief Get TX DATA buffer from pool but also reserve headroom for
@@ -695,8 +695,8 @@
  *
  * @return Network buffer if successful, NULL otherwise.
  */
-struct net_buf *net_pkt_get_reserve_tx_data(uint16_t reserve_head,
-					    int32_t timeout);
+struct net_buf *net_pkt_get_reserve_tx_data(u16_t reserve_head,
+					    s32_t timeout);
 
 /**
  * @brief Get a data fragment that might be from user specific
@@ -710,7 +710,7 @@
  *
  * @return Network buffer if successful, NULL otherwise.
  */
-struct net_buf *net_pkt_get_frag(struct net_pkt *pkt, int32_t timeout);
+struct net_buf *net_pkt_get_frag(struct net_pkt *pkt, s32_t timeout);
 
 /**
  * @brief Place packet back into the available packets slab
@@ -801,7 +801,7 @@
  * @return New fragment list if successful, NULL otherwise.
  */
 struct net_buf *net_pkt_copy(struct net_pkt *pkt, size_t amount,
-			     size_t reserve, int32_t timeout);
+			     size_t reserve, s32_t timeout);
 
 /**
  * @brief Copy a packet fragment list while reserving some extra space
@@ -820,7 +820,7 @@
  */
 static inline struct net_buf *net_pkt_copy_all(struct net_pkt *pkt,
 					       size_t reserve,
-					       int32_t timeout)
+					       s32_t timeout)
 {
 	return net_pkt_copy(pkt, net_buf_frags_len(pkt->frags),
 			    reserve, timeout);
@@ -840,7 +840,7 @@
  * @return -ENOMEM on error
  */
 int net_frag_linear_copy(struct net_buf *dst, struct net_buf *src,
-			 uint16_t offset, uint16_t len);
+			 u16_t offset, u16_t len);
 
 /**
  * @brief Compact the fragment list of a packet.
@@ -871,11 +871,11 @@
  *         False otherwise (In-case of false pkt might contain input
  *         data in the process of placing into fragments).
  */
-bool net_pkt_append(struct net_pkt *pkt, uint16_t len, const uint8_t *data,
-		    int32_t timeout);
+bool net_pkt_append(struct net_pkt *pkt, u16_t len, const u8_t *data,
+		    s32_t timeout);
 
 /**
- * @brief Append uint8_t data to last fragment in fragment list of a packet
+ * @brief Append u8_t data to last fragment in fragment list of a packet
  *
  * @details Append data to last fragment. If there is not enough space in last
  * fragment then new data fragment will be created and will be added to
@@ -888,13 +888,13 @@
  *         False otherwise (In-case of false pkt might contain input
  *         data in the process of placing into fragments).
  */
-static inline bool net_pkt_append_u8(struct net_pkt *pkt, uint8_t data)
+static inline bool net_pkt_append_u8(struct net_pkt *pkt, u8_t data)
 {
 	return net_pkt_append(pkt, 1, &data, K_FOREVER);
 }
 
 /**
- * @brief Append uint16_t data to last fragment in fragment list of a packet
+ * @brief Append u16_t data to last fragment in fragment list of a packet
  *
  * @details Append data to last fragment. If there is not enough space in last
  * fragment then new data fragment will be created and will be added to
@@ -907,16 +907,16 @@
  *         False otherwise (In-case of false pkt might contain input data
  *         in the process of placing into fragments).
  */
-static inline bool net_pkt_append_be16(struct net_pkt *pkt, uint16_t data)
+static inline bool net_pkt_append_be16(struct net_pkt *pkt, u16_t data)
 {
-	uint16_t value = sys_cpu_to_be16(data);
+	u16_t value = sys_cpu_to_be16(data);
 
-	return net_pkt_append(pkt, sizeof(uint16_t), (uint8_t *)&value,
+	return net_pkt_append(pkt, sizeof(u16_t), (u8_t *)&value,
 			      K_FOREVER);
 }
 
 /**
- * @brief Append uint32_t data to last fragment in fragment list of a packet
+ * @brief Append u32_t data to last fragment in fragment list of a packet
  *
  * @details Append data to last fragment. If there is not enough space in last
  * fragment then new data fragment will be created and will be added to
@@ -929,16 +929,16 @@
  *         False otherwise (In-case of false pkt might contain input data
  *         in the process of placing into fragments).
  */
-static inline bool net_pkt_append_be32(struct net_pkt *pkt, uint32_t data)
+static inline bool net_pkt_append_be32(struct net_pkt *pkt, u32_t data)
 {
-	uint32_t value = sys_cpu_to_be32(data);
+	u32_t value = sys_cpu_to_be32(data);
 
-	return net_pkt_append(pkt, sizeof(uint32_t), (uint8_t *)&value,
+	return net_pkt_append(pkt, sizeof(u32_t), (u8_t *)&value,
 			      K_FOREVER);
 }
 
 /**
- * @brief Append uint32_t data to last fragment in fragment list
+ * @brief Append u32_t data to last fragment in fragment list
  *
  * @details Append data to last fragment. If there is not enough space in last
  * fragment then new data fragment will be created and will be added to
@@ -951,11 +951,11 @@
  *         False otherwise (In-case of false pkt might contain input data
  *         in the process of placing into fragments).
  */
-static inline bool net_pkt_append_le32(struct net_pkt *pkt, uint32_t data)
+static inline bool net_pkt_append_le32(struct net_pkt *pkt, u32_t data)
 {
-	uint32_t value = sys_cpu_to_le32(data);
+	u32_t value = sys_cpu_to_le32(data);
 
-	return net_pkt_append(pkt, sizeof(uint32_t), (uint8_t *)&value,
+	return net_pkt_append(pkt, sizeof(u32_t), (u8_t *)&value,
 			      K_FOREVER);
 }
 
@@ -978,8 +978,8 @@
  *         NULL and pos is 0 after successful read,
  *         NULL and pos is 0xffff otherwise.
  */
-struct net_buf *net_frag_read(struct net_buf *frag, uint16_t offset,
-			      uint16_t *pos, uint16_t len, uint8_t *data);
+struct net_buf *net_frag_read(struct net_buf *frag, u16_t offset,
+			      u16_t *pos, u16_t len, u8_t *data);
 
 /**
  * @brief Skip N number of bytes while reading buffer
@@ -1001,8 +1001,8 @@
  *         NULL and pos is 0xffff otherwise.
  */
 static inline struct net_buf *net_frag_skip(struct net_buf *frag,
-					    uint16_t offset,
-					    uint16_t *pos, uint16_t len)
+					    u16_t offset,
+					    u16_t *pos, u16_t len)
 {
 	return net_frag_read(frag, offset, pos, len, NULL);
 }
@@ -1020,9 +1020,9 @@
  *         NULL otherwise (if pos is 0, NULL is not a failure case).
  */
 static inline struct net_buf *net_frag_read_u8(struct net_buf *frag,
-					      uint16_t offset,
-					      uint16_t *pos,
-					      uint8_t *value)
+					      u16_t offset,
+					      u16_t *pos,
+					      u8_t *value)
 {
 	return net_frag_read(frag, offset, pos, 1, value);
 }
@@ -1039,8 +1039,8 @@
  * @return Pointer to fragment after successful read,
  *         NULL otherwise (if pos is 0, NULL is not a failure case).
  */
-struct net_buf *net_frag_read_be16(struct net_buf *frag, uint16_t offset,
-				   uint16_t *pos, uint16_t *value);
+struct net_buf *net_frag_read_be16(struct net_buf *frag, u16_t offset,
+				   u16_t *pos, u16_t *value);
 
 /**
  * @brief Get 32 bit big endian value from fragmented buffer
@@ -1054,8 +1054,8 @@
  * @return Pointer to fragment after successful read,
  *         NULL otherwise (if pos is 0, NULL is not a failure case).
  */
-struct net_buf *net_frag_read_be32(struct net_buf *frag, uint16_t offset,
-				   uint16_t *pos, uint32_t *value);
+struct net_buf *net_frag_read_be32(struct net_buf *frag, u16_t offset,
+				   u16_t *pos, u32_t *value);
 
 /**
  * @brief Write data to an arbitrary offset in fragments list of a packet.
@@ -1118,44 +1118,44 @@
  *         NULL and pos is 0xffff otherwise.
  */
 struct net_buf *net_pkt_write(struct net_pkt *pkt, struct net_buf *frag,
-			      uint16_t offset, uint16_t *pos, uint16_t len,
-			      uint8_t *data, int32_t timeout);
+			      u16_t offset, u16_t *pos, u16_t len,
+			      u8_t *data, s32_t timeout);
 
-/* Write uint8_t data to an arbitrary offset in fragment. */
+/* Write u8_t data to an arbitrary offset in fragment. */
 static inline struct net_buf *net_pkt_write_u8(struct net_pkt *pkt,
 					       struct net_buf *frag,
-					       uint16_t offset,
-					       uint16_t *pos,
-					       uint8_t data)
+					       u16_t offset,
+					       u16_t *pos,
+					       u8_t data)
 {
-	return net_pkt_write(pkt, frag, offset, pos, sizeof(uint8_t),
+	return net_pkt_write(pkt, frag, offset, pos, sizeof(u8_t),
 			     &data, K_FOREVER);
 }
 
-/* Write uint16_t big endian value to an arbitrary offset in fragment. */
+/* Write u16_t big endian value to an arbitrary offset in fragment. */
 static inline struct net_buf *net_pkt_write_be16(struct net_pkt *pkt,
 						 struct net_buf *frag,
-						 uint16_t offset,
-						 uint16_t *pos,
-						 uint16_t data)
+						 u16_t offset,
+						 u16_t *pos,
+						 u16_t data)
 {
-	uint16_t value = htons(data);
+	u16_t value = htons(data);
 
-	return net_pkt_write(pkt, frag, offset, pos, sizeof(uint16_t),
-			     (uint8_t *)&value, K_FOREVER);
+	return net_pkt_write(pkt, frag, offset, pos, sizeof(u16_t),
+			     (u8_t *)&value, K_FOREVER);
 }
 
-/* Write uint32_t big endian value to an arbitrary offset in fragment. */
+/* Write u32_t big endian value to an arbitrary offset in fragment. */
 static inline struct net_buf *net_pkt_write_be32(struct net_pkt *pkt,
 						 struct net_buf *frag,
-						 uint16_t offset,
-						 uint16_t *pos,
-						 uint32_t data)
+						 u16_t offset,
+						 u16_t *pos,
+						 u32_t data)
 {
-	uint32_t value = htonl(data);
+	u32_t value = htonl(data);
 
-	return net_pkt_write(pkt, frag, offset, pos, sizeof(uint32_t),
-			     (uint8_t *)&value, K_FOREVER);
+	return net_pkt_write(pkt, frag, offset, pos, sizeof(u32_t),
+			     (u8_t *)&value, K_FOREVER);
 }
 
 /**
@@ -1183,45 +1183,45 @@
  * @return True on success, False otherwise.
  */
 bool net_pkt_insert(struct net_pkt *pkt, struct net_buf *frag,
-		    uint16_t offset, uint16_t len, uint8_t *data,
-		    int32_t timeout);
+		    u16_t offset, u16_t len, u8_t *data,
+		    s32_t timeout);
 
-/* Insert uint8_t data at an arbitrary offset in a series of fragments. */
+/* Insert u8_t data at an arbitrary offset in a series of fragments. */
 static inline bool net_pkt_insert_u8(struct net_pkt *pkt,
 				     struct net_buf *frag,
-				     uint16_t offset,
-				     uint8_t data)
+				     u16_t offset,
+				     u8_t data)
 {
-	return net_pkt_insert(pkt, frag, offset, sizeof(uint8_t), &data,
+	return net_pkt_insert(pkt, frag, offset, sizeof(u8_t), &data,
 			      K_FOREVER);
 }
 
-/* Insert uint16_t big endian value at an arbitrary offset in a series of
+/* Insert u16_t big endian value at an arbitrary offset in a series of
  * fragments.
  */
 static inline bool net_pkt_insert_be16(struct net_pkt *pkt,
 				       struct net_buf *frag,
-				       uint16_t offset,
-				       uint16_t data)
+				       u16_t offset,
+				       u16_t data)
 {
-	uint16_t value = htons(data);
+	u16_t value = htons(data);
 
-	return net_pkt_insert(pkt, frag, offset, sizeof(uint16_t),
-			      (uint8_t *)&value, K_FOREVER);
+	return net_pkt_insert(pkt, frag, offset, sizeof(u16_t),
+			      (u8_t *)&value, K_FOREVER);
 }
 
-/* Insert uint32_t big endian value at an arbitrary offset in a series of
+/* Insert u32_t big endian value at an arbitrary offset in a series of
  * fragments.
  */
 static inline bool net_pkt_insert_be32(struct net_pkt *pkt,
 				       struct net_buf *frag,
-				       uint16_t offset,
-				       uint32_t data)
+				       u16_t offset,
+				       u32_t data)
 {
-	uint32_t value = htonl(data);
+	u32_t value = htonl(data);
 
-	return net_pkt_insert(pkt, frag, offset, sizeof(uint32_t),
-			      (uint8_t *)&value, K_FOREVER);
+	return net_pkt_insert(pkt, frag, offset, sizeof(u32_t),
+			      (u8_t *)&value, K_FOREVER);
 }
 
 /**
@@ -1250,8 +1250,8 @@
  * @return 0 on success, <0 otherwise.
  */
 int net_pkt_split(struct net_pkt *pkt, struct net_buf *orig_frag,
-		  uint16_t len, struct net_buf **fragA,
-		  struct net_buf **fragB, int32_t timeout);
+		  u16_t len, struct net_buf **fragA,
+		  struct net_buf **fragB, s32_t timeout);
 
 /**
  * @brief Get information about pre-defined RX, TX and DATA pools.
diff --git a/include/net/net_stats.h b/include/net/net_stats.h
index ca26a91..89b0d05 100644
--- a/include/net/net_stats.h
+++ b/include/net/net_stats.h
@@ -20,7 +20,7 @@
 extern "C" {
 #endif
 
-typedef uint32_t net_stats_t;
+typedef u32_t net_stats_t;
 
 struct net_stats_ip {
 	/** Number of received packets at the IP layer. */
@@ -179,16 +179,16 @@
 };
 
 struct net_stats_rpl {
-	uint16_t mem_overflows;
-	uint16_t local_repairs;
-	uint16_t global_repairs;
-	uint16_t malformed_msgs;
-	uint16_t resets;
-	uint16_t parent_switch;
-	uint16_t forward_errors;
-	uint16_t loop_errors;
-	uint16_t loop_warnings;
-	uint16_t root_repairs;
+	u16_t mem_overflows;
+	u16_t local_repairs;
+	u16_t global_repairs;
+	u16_t malformed_msgs;
+	u16_t resets;
+	u16_t parent_switch;
+	u16_t forward_errors;
+	u16_t loop_errors;
+	u16_t loop_warnings;
+	u16_t root_repairs;
 
 	struct net_stats_rpl_dis dis;
 	struct net_stats_rpl_dio dio;
@@ -208,8 +208,8 @@
 };
 
 struct net_stats_bytes {
-	uint32_t sent;
-	uint32_t received;
+	u32_t sent;
+	u32_t received;
 };
 
 struct net_stats {
diff --git a/include/net/trickle.h b/include/net/trickle.h
index d72bf5c..5a318f5 100644
--- a/include/net/trickle.h
+++ b/include/net/trickle.h
@@ -34,15 +34,15 @@
  * only via the Trickle API.
  */
 struct net_trickle {
-	uint32_t Imin;		/* Min interval size in ms */
-	uint8_t Imax;		/* Max number of doublings */
-	uint8_t k;		/* Redundancy constant */
+	u32_t Imin;		/* Min interval size in ms */
+	u8_t Imax;		/* Max number of doublings */
+	u8_t k;		/* Redundancy constant */
 
-	uint32_t I;		/* Current interval size */
-	uint32_t Istart;	/* Start of the interval in ms */
-	uint8_t c;		/* Consistency counter */
+	u32_t I;		/* Current interval size */
+	u32_t Istart;	/* Start of the interval in ms */
+	u8_t c;		/* Consistency counter */
 
-	uint32_t Imax_abs;	/* Max interval size in ms (not doublings)
+	u32_t Imax_abs;	/* Max interval size in ms (not doublings)
 				 */
 
 	struct k_delayed_work timer;
@@ -63,9 +63,9 @@
  * @return Return 0 if ok and <0 if error.
  */
 int net_trickle_create(struct net_trickle *trickle,
-		       uint32_t Imin,
-		       uint8_t Imax,
-		       uint8_t k);
+		       u32_t Imin,
+		       u8_t Imax,
+		       u8_t k);
 
 /**
  * @brief Start a Trickle timer.
diff --git a/include/net/zoap.h b/include/net/zoap.h
index 9cc0953..ca75f45 100644
--- a/include/net/zoap.h
+++ b/include/net/zoap.h
@@ -185,8 +185,8 @@
 struct zoap_observer {
 	sys_snode_t list;
 	struct sockaddr addr;
-	uint8_t token[8];
-	uint8_t tkl;
+	u8_t token[8];
+	u8_t tkl;
 };
 
 /**
@@ -194,8 +194,8 @@
  */
 struct zoap_packet {
 	struct net_pkt *pkt;
-	uint8_t *start; /* Start of the payload */
-	uint16_t total_size;
+	u8_t *start; /* Start of the payload */
+	u16_t total_size;
 };
 
 /**
@@ -213,8 +213,8 @@
 struct zoap_pending {
 	struct net_pkt *pkt;
 	struct sockaddr addr;
-	int32_t timeout;
-	uint16_t id;
+	s32_t timeout;
+	u16_t id;
 };
 
 /**
@@ -225,8 +225,8 @@
 	zoap_reply_t reply;
 	void *user_data;
 	int age;
-	uint8_t token[8];
-	uint8_t tkl;
+	u8_t token[8];
+	u8_t tkl;
 };
 
 /**
@@ -304,8 +304,8 @@
  * To be used with zoap_find_options().
  */
 struct zoap_option {
-	uint8_t *value;
-	uint16_t len;
+	u8_t *value;
+	u16_t len;
 };
 
 /**
@@ -492,7 +492,7 @@
  *
  * @return pointer to the start of the payload, NULL in case of error.
  */
-uint8_t *zoap_packet_get_payload(struct zoap_packet *zpkt, uint16_t *len);
+u8_t *zoap_packet_get_payload(struct zoap_packet *zpkt, u16_t *len);
 
 /**
  * @brief Sets how much space was used by the payload.
@@ -506,7 +506,7 @@
  *
  * @return 0 in case of success or negative in case of error.
  */
-int zoap_packet_set_used(struct zoap_packet *zpkt, uint16_t len);
+int zoap_packet_set_used(struct zoap_packet *zpkt, u16_t len);
 
 /**
  * @brief Adds an option to the packet.
@@ -520,8 +520,8 @@
  *
  * @return 0 in case of success or negative in case of error.
  */
-int zoap_add_option(struct zoap_packet *zpkt, uint16_t code,
-		    const void *value, uint16_t len);
+int zoap_add_option(struct zoap_packet *zpkt, u16_t code,
+		    const void *value, u16_t len);
 
 /**
  * @brief Converts an option to its integer representation.
@@ -548,7 +548,7 @@
  *
  * @return 0 in case of success or negative in case of error.
  */
-int zoap_add_option_int(struct zoap_packet *zpkt, uint16_t code,
+int zoap_add_option_int(struct zoap_packet *zpkt, u16_t code,
 			unsigned int val);
 
 /**
@@ -564,8 +564,8 @@
  * @return The number of options found in packet matching code,
  * negative on error.
  */
-int zoap_find_options(const struct zoap_packet *zpkt, uint16_t code,
-		      struct zoap_option *options, uint16_t veclen);
+int zoap_find_options(const struct zoap_packet *zpkt, u16_t code,
+		      struct zoap_option *options, u16_t veclen);
 
 /**
  * Represents the size of each block that will be transferred using
@@ -593,7 +593,7 @@
  *
  * @return The size in bytes that the block_size represents
  */
-static inline uint16_t zoap_block_size_to_bytes(
+static inline u16_t zoap_block_size_to_bytes(
 	enum zoap_block_size block_size)
 {
 	return (1 << (block_size + 4));
@@ -700,7 +700,7 @@
  *
  * @return the CoAP version in packet
  */
-uint8_t zoap_header_get_version(const struct zoap_packet *zpkt);
+u8_t zoap_header_get_version(const struct zoap_packet *zpkt);
 
 /**
  * @brief Returns the type of the CoAP packet.
@@ -709,7 +709,7 @@
  *
  * @return the type of the packet
  */
-uint8_t zoap_header_get_type(const struct zoap_packet *zpkt);
+u8_t zoap_header_get_type(const struct zoap_packet *zpkt);
 
 /**
  * @brief Returns the token (if any) in the CoAP packet.
@@ -719,8 +719,8 @@
  *
  * @return pointer to the start of the token in the CoAP packet.
  */
-const uint8_t *zoap_header_get_token(const struct zoap_packet *zpkt,
-				     uint8_t *len);
+const u8_t *zoap_header_get_token(const struct zoap_packet *zpkt,
+				     u8_t *len);
 
 /**
  * @brief Returns the code of the CoAP packet.
@@ -729,7 +729,7 @@
  *
  * @return the code present in the packet
  */
-uint8_t zoap_header_get_code(const struct zoap_packet *zpkt);
+u8_t zoap_header_get_code(const struct zoap_packet *zpkt);
 
 /**
  * @brief Returns the message id associated with the CoAP packet.
@@ -738,7 +738,7 @@
  *
  * @return the message id present in the packet
  */
-uint16_t zoap_header_get_id(const struct zoap_packet *zpkt);
+u16_t zoap_header_get_id(const struct zoap_packet *zpkt);
 
 /**
  * @brief Sets the version of the CoAP packet.
@@ -746,7 +746,7 @@
  * @param zpkt CoAP packet representation
  * @param ver The CoAP version to set in the packet
  */
-void zoap_header_set_version(struct zoap_packet *zpkt, uint8_t ver);
+void zoap_header_set_version(struct zoap_packet *zpkt, u8_t ver);
 
 /**
  * @brief Sets the type of the CoAP packet.
@@ -754,7 +754,7 @@
  * @param zpkt CoAP packet representation
  * @param type The packet type to set
  */
-void zoap_header_set_type(struct zoap_packet *zpkt, uint8_t type);
+void zoap_header_set_type(struct zoap_packet *zpkt, u8_t type);
 
 /**
  * @brief Sets the token in the CoAP packet.
@@ -765,8 +765,8 @@
  *
  * @return 0 in case of success or negative in case of error.
  */
-int zoap_header_set_token(struct zoap_packet *zpkt, const uint8_t *token,
-			  uint8_t tokenlen);
+int zoap_header_set_token(struct zoap_packet *zpkt, const u8_t *token,
+			  u8_t tokenlen);
 
 /**
  * @brief Sets the code present in the CoAP packet.
@@ -774,7 +774,7 @@
  * @param zpkt CoAP packet representation
  * @param code The code set in the packet
  */
-void zoap_header_set_code(struct zoap_packet *zpkt, uint8_t code);
+void zoap_header_set_code(struct zoap_packet *zpkt, u8_t code);
 
 /**
  * @brief Sets the message id present in the CoAP packet.
@@ -782,16 +782,16 @@
  * @param zpkt CoAP packet representation
  * @param id The message id to set in the packet
  */
-void zoap_header_set_id(struct zoap_packet *zpkt, uint16_t id);
+void zoap_header_set_id(struct zoap_packet *zpkt, u16_t id);
 
 /**
  * @brief Helper to generate message ids
  *
  * @return a new message id
  */
-static inline uint16_t zoap_next_id(void)
+static inline u16_t zoap_next_id(void)
 {
-	static uint16_t message_id;
+	static u16_t message_id;
 
 	return ++message_id;
 }
@@ -802,7 +802,7 @@
  *
  * @return a 8-byte pseudo-random token.
  */
-uint8_t *zoap_next_token(void);
+u8_t *zoap_next_token(void);
 
 /**
  * @}
diff --git a/samples/net/coaps_client/src/coaps_client.c b/samples/net/coaps_client/src/coaps_client.c
index 49119cf..bd1c06c 100644
--- a/samples/net/coaps_client/src/coaps_client.c
+++ b/samples/net/coaps_client/src/coaps_client.c
@@ -78,12 +78,12 @@
 static struct in6_addr mcast_addr = MCAST_IP_ADDR;
 
 struct dtls_timing_context {
-	uint32_t snapshot;
-	uint32_t int_ms;
-	uint32_t fin_ms;
+	u32_t snapshot;
+	u32_t int_ms;
+	u32_t fin_ms;
 };
 
-static void msg_dump(const char *s, uint8_t *data, unsigned int len)
+static void msg_dump(const char *s, u8_t *data, unsigned int len)
 {
 	unsigned int i;
 
@@ -125,7 +125,7 @@
 	mbedtls_printf("%s:%04d: |%d| %s", basename, line, level, str);
 }
 
-void dtls_timing_set_delay(void *data, uint32_t int_ms, uint32_t fin_ms)
+void dtls_timing_set_delay(void *data, u32_t int_ms, u32_t fin_ms)
 {
 	struct dtls_timing_context *ctx = (struct dtls_timing_context *)data;
 
@@ -162,7 +162,7 @@
 static int entropy_source(void *data, unsigned char *output, size_t len,
 			  size_t *olen)
 {
-	uint32_t seed;
+	u32_t seed;
 
 	ARG_UNUSED(data);
 
@@ -188,9 +188,9 @@
 	struct zoap_reply *reply;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint8_t observe = 0;
+	u8_t observe = 0;
 	const char *const *p;
-	uint16_t len;
+	u16_t len;
 
 	mbedtls_entropy_context entropy;
 	mbedtls_ctr_drbg_context ctr_drbg;
@@ -411,7 +411,7 @@
 }
 
 #define STACK_SIZE		4096
-uint8_t stack[STACK_SIZE];
+u8_t stack[STACK_SIZE];
 
 static inline int init_app(void)
 {
diff --git a/samples/net/coaps_client/src/udp.c b/samples/net/coaps_client/src/udp.c
index ce53deb..20da925 100644
--- a/samples/net/coaps_client/src/udp.c
+++ b/samples/net/coaps_client/src/udp.c
@@ -63,7 +63,7 @@
 		return MBEDTLS_ERR_SSL_ALLOC_FAILED;
 	}
 
-	rc = net_pkt_append(send_pkt, size, (uint8_t *) buf, K_FOREVER);
+	rc = net_pkt_append(send_pkt, size, (u8_t *) buf, K_FOREVER);
 	if (!rc) {
 		return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
 	}
@@ -82,12 +82,12 @@
 	}
 }
 
-int udp_rx(void *context, unsigned char *buf, size_t size, uint32_t timeout)
+int udp_rx(void *context, unsigned char *buf, size_t size, u32_t timeout)
 {
 	struct udp_context *ctx = context;
 	struct net_buf *rx_buf = NULL;
-	uint16_t read_bytes;
-	uint8_t *ptr;
+	u16_t read_bytes;
+	u8_t *ptr;
 	int pos;
 	int len;
 	int rc;
diff --git a/samples/net/coaps_client/src/udp.h b/samples/net/coaps_client/src/udp.h
index bd3b66a..f8c68cd 100644
--- a/samples/net/coaps_client/src/udp.h
+++ b/samples/net/coaps_client/src/udp.h
@@ -18,6 +18,6 @@
 
 int udp_init(struct udp_context *ctx);
 int udp_tx(void *ctx, const unsigned char *buf, size_t size);
-int udp_rx(void *ctx, unsigned char *buf, size_t size, uint32_t timeout);
+int udp_rx(void *ctx, unsigned char *buf, size_t size, u32_t timeout);
 
 #endif
diff --git a/samples/net/coaps_server/src/coaps_server.c b/samples/net/coaps_server/src/coaps_server.c
index 1bd1155..69044e0 100644
--- a/samples/net/coaps_server/src/coaps_server.c
+++ b/samples/net/coaps_server/src/coaps_server.c
@@ -76,13 +76,13 @@
 
 static mbedtls_ssl_context *curr_ctx;
 
-static int send_response(struct zoap_packet *request, uint8_t response_code)
+static int send_response(struct zoap_packet *request, u8_t response_code)
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t code, type;
-	uint16_t id;
+	u8_t code, type;
+	u16_t id;
 	int r;
 
 	code = zoap_header_get_code(request);
@@ -154,8 +154,8 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload, code, type;
-	uint16_t len, id;
+	u8_t *payload, code, type;
+	u16_t len, id;
 	int r;
 
 	code = zoap_header_get_code(request);
@@ -226,8 +226,8 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload, code, type;
-	uint16_t len, id;
+	u8_t *payload, code, type;
+	u16_t len, id;
 	int i, r;
 
 	code = zoap_header_get_code(request);
@@ -337,9 +337,9 @@
 };
 
 struct dtls_timing_context {
-	uint32_t snapshot;
-	uint32_t int_ms;
-	uint32_t fin_ms;
+	u32_t snapshot;
+	u32_t int_ms;
+	u32_t fin_ms;
 };
 
 static void my_debug(void *ctx, int level,
@@ -360,7 +360,7 @@
 	mbedtls_printf("%s:%04d: |%d| %s", basename, line, level, str);
 }
 
-void dtls_timing_set_delay(void *data, uint32_t int_ms, uint32_t fin_ms)
+void dtls_timing_set_delay(void *data, u32_t int_ms, u32_t fin_ms)
 {
 	struct dtls_timing_context *ctx = (struct dtls_timing_context *)data;
 
@@ -397,7 +397,7 @@
 static int entropy_source(void *data, unsigned char *output, size_t len,
 			  size_t *olen)
 {
-	uint32_t seed;
+	u32_t seed;
 
 	ARG_UNUSED(data);
 
@@ -632,7 +632,7 @@
 }
 
 #define STACK_SIZE		4096
-uint8_t stack[STACK_SIZE];
+u8_t stack[STACK_SIZE];
 
 static inline int init_app(void)
 {
diff --git a/samples/net/coaps_server/src/udp.c b/samples/net/coaps_server/src/udp.c
index ac9905f0b..745b598 100644
--- a/samples/net/coaps_server/src/udp.c
+++ b/samples/net/coaps_server/src/udp.c
@@ -53,7 +53,7 @@
 		return -EIO;
 	}
 
-	rc = net_pkt_append(send_pkt, size, (uint8_t *) buf, K_FOREVER);
+	rc = net_pkt_append(send_pkt, size, (u8_t *) buf, K_FOREVER);
 	if (!rc) {
 		printk("cannot write buf\n");
 		return -EIO;
@@ -79,8 +79,8 @@
 	struct net_context *net_ctx = ctx->net_ctx;
 	struct net_pkt *rx_pkt = NULL;
 	struct net_buf *rx_buf;
-	uint16_t read_bytes;
-	uint8_t *ptr;
+	u16_t read_bytes;
+	u8_t *ptr;
 	int pos;
 	int len;
 	int rc;
diff --git a/samples/net/common/ieee802154_settings.c b/samples/net/common/ieee802154_settings.c
index 2451587..478c1f8 100644
--- a/samples/net/common/ieee802154_settings.c
+++ b/samples/net/common/ieee802154_settings.c
@@ -16,9 +16,9 @@
 
 int ieee802154_sample_setup(void)
 {
-	uint16_t channel = CONFIG_NET_APP_IEEE802154_CHANNEL;
-	uint16_t pan_id = CONFIG_NET_APP_IEEE802154_PAN_ID;
-	int16_t tx_power = CONFIG_NET_APP_IEEE802154_RADIO_TX_POWER;
+	u16_t channel = CONFIG_NET_APP_IEEE802154_CHANNEL;
+	u16_t pan_id = CONFIG_NET_APP_IEEE802154_PAN_ID;
+	s16_t tx_power = CONFIG_NET_APP_IEEE802154_RADIO_TX_POWER;
 
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
 	struct ieee802154_security_params sec_params = {
@@ -43,11 +43,11 @@
 	}
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_SET_PAN_ID,
-		     iface, &pan_id, sizeof(uint16_t)) ||
+		     iface, &pan_id, sizeof(u16_t)) ||
 	    net_mgmt(NET_REQUEST_IEEE802154_SET_CHANNEL,
-		     iface, &channel, sizeof(uint16_t)) ||
+		     iface, &channel, sizeof(u16_t)) ||
 	    net_mgmt(NET_REQUEST_IEEE802154_SET_TX_POWER,
-		     iface, &tx_power, sizeof(int16_t))) {
+		     iface, &tx_power, sizeof(s16_t))) {
 		return -EINVAL;
 	}
 
diff --git a/samples/net/dhcpv4_client/src/main.c b/samples/net/dhcpv4_client/src/main.c
index e48c147..3eacf28 100644
--- a/samples/net/dhcpv4_client/src/main.c
+++ b/samples/net/dhcpv4_client/src/main.c
@@ -29,7 +29,7 @@
 static struct net_mgmt_event_callback mgmt_cb;
 
 static void handler(struct net_mgmt_event_callback *cb,
-		    uint32_t mgmt_event,
+		    u32_t mgmt_event,
 		    struct net_if *iface)
 {
 	int i = 0;
diff --git a/samples/net/dns_resolve/src/main.c b/samples/net/dns_resolve/src/main.c
index 1fa93d1..04bab39 100644
--- a/samples/net/dns_resolve/src/main.c
+++ b/samples/net/dns_resolve/src/main.c
@@ -79,7 +79,7 @@
 
 static void do_ipv4_lookup(struct k_work *work)
 {
-	uint16_t dns_id;
+	u16_t dns_id;
 	int ret;
 
 	ret = dns_get_addr_info("www.zephyrproject.org",
@@ -97,7 +97,7 @@
 }
 
 static void ipv4_addr_add_handler(struct net_mgmt_event_callback *cb,
-				  uint32_t mgmt_event,
+				  u32_t mgmt_event,
 				  struct net_if *iface)
 {
 	char hr_addr[NET_IPV4_ADDR_LEN];
@@ -160,7 +160,7 @@
 {
 	char hr_addr[NET_IPV4_ADDR_LEN];
 	struct in_addr addr;
-	uint16_t dns_id;
+	u16_t dns_id;
 	int ret;
 
 	if (net_addr_pton(AF_INET, CONFIG_NET_APP_MY_IPV4_ADDR, &addr)) {
@@ -202,7 +202,7 @@
 
 static void do_ipv6_lookup(struct k_work *work)
 {
-	uint16_t dns_id;
+	u16_t dns_id;
 	int ret;
 
 	ret = dns_get_addr_info("www.zephyrproject.org",
@@ -224,7 +224,7 @@
  * network. So wait for that before continuing.
  */
 static void ipv6_router_add_handler(struct net_mgmt_event_callback *cb,
-				    uint32_t mgmt_event,
+				    u32_t mgmt_event,
 				    struct net_if *iface)
 {
 	if (mgmt_event != NET_EVENT_IPV6_ROUTER_ADD) {
diff --git a/samples/net/echo_client/src/echo-client.c b/samples/net/echo_client/src/echo-client.c
index e72fd0c..0ba5676 100644
--- a/samples/net/echo_client/src/echo-client.c
+++ b/samples/net/echo_client/src/echo-client.c
@@ -111,9 +111,9 @@
 #define PEER_PORT 4242
 
 struct data {
-	uint32_t expecting_udp;
-	uint32_t expecting_tcp;
-	uint32_t received_tcp;
+	u32_t expecting_udp;
+	u32_t expecting_tcp;
+	u32_t received_tcp;
 };
 
 static struct {
@@ -455,7 +455,7 @@
 #if defined(CONFIG_NET_UDP)
 static bool compare_udp_data(struct net_pkt *pkt, int expecting_len)
 {
-	uint8_t *ptr = net_pkt_appdata(pkt);
+	u8_t *ptr = net_pkt_appdata(pkt);
 	struct net_buf *frag;
 	int pos = 0;
 	int len;
@@ -617,7 +617,7 @@
 static bool compare_tcp_data(struct net_pkt *pkt, int expecting_len,
 			     int received_len)
 {
-	uint8_t *ptr = net_pkt_appdata(pkt), *start;
+	u8_t *ptr = net_pkt_appdata(pkt), *start;
 	int pos = 0;
 	struct net_buf *frag;
 	int len;
@@ -714,7 +714,7 @@
 		     void *token,
 		     void *user_data)
 {
-	uint32_t len = POINTER_TO_UINT(token);
+	u32_t len = POINTER_TO_UINT(token);
 
 	if (len) {
 		if (status) {
@@ -854,7 +854,7 @@
 #endif
 
 static void event_iface_up(struct net_mgmt_event_callback *cb,
-			   uint32_t mgmt_event, struct net_if *iface)
+			   u32_t mgmt_event, struct net_if *iface)
 {
 	struct net_context *udp_send4 = { 0 };
 	struct net_context *udp_send6 = { 0 };
diff --git a/samples/net/http_client/src/http_client_cb.c b/samples/net/http_client/src/http_client_cb.c
index 7cbc8e1..767512c 100644
--- a/samples/net/http_client/src/http_client_cb.c
+++ b/samples/net/http_client/src/http_client_cb.c
@@ -24,7 +24,7 @@
 int on_status(struct http_parser *parser, const char *at, size_t length)
 {
 	struct http_client_ctx *ctx;
-	uint16_t len;
+	u16_t len;
 
 	ARG_UNUSED(parser);
 
@@ -40,7 +40,7 @@
 {
 	char *content_len = "Content-Length";
 	struct http_client_ctx *ctx;
-	uint16_t len;
+	u16_t len;
 
 	ctx = CONTAINER_OF(parser, struct http_client_ctx, parser);
 
diff --git a/samples/net/http_client/src/http_client_rcv.c b/samples/net/http_client/src/http_client_rcv.c
index c9bd031..7eacfeb 100644
--- a/samples/net/http_client/src/http_client_rcv.c
+++ b/samples/net/http_client/src/http_client_rcv.c
@@ -18,8 +18,8 @@
 {
 	struct http_client_ctx *http_ctx;
 	struct net_buf *data_buf = NULL;
-	uint16_t data_len;
-	uint16_t offset;
+	u16_t data_len;
+	u16_t offset;
 	int rc;
 
 	if (!rx) {
@@ -59,7 +59,7 @@
 {
 	struct http_client_ctx *http_ctx;
 	struct net_buf *frag = rx->frags;
-	uint16_t offset;
+	u16_t offset;
 
 	if (!rx) {
 		return;
diff --git a/samples/net/http_client/src/http_client_types.h b/samples/net/http_client/src/http_client_types.h
index e916fe0..fe3915c 100644
--- a/samples/net/http_client/src/http_client_types.h
+++ b/samples/net/http_client/src/http_client_types.h
@@ -17,8 +17,8 @@
 
 	struct tcp_client_ctx tcp_ctx;
 
-	uint32_t content_length;
-	uint32_t processed;
+	u32_t content_length;
+	u32_t processed;
 
 	/* https://tools.ietf.org/html/rfc7230#section-3.1.2
 	 * The status-code element is a 3-digit integer code
@@ -30,8 +30,8 @@
 	 */
 	char http_status[HTTP_STATUS_STR_SIZE];
 
-	uint8_t cl_present:1;
-	uint8_t body_found:1;
+	u8_t cl_present:1;
+	u8_t body_found:1;
 };
 
 #endif
diff --git a/samples/net/http_client/src/main.c b/samples/net/http_client/src/main.c
index 7477e03..3cda741 100644
--- a/samples/net/http_client/src/main.c
+++ b/samples/net/http_client/src/main.c
@@ -70,7 +70,7 @@
 			     char *content_type, char *payload)
 {
 	struct net_context *net_ctx;
-	int32_t timeout;
+	s32_t timeout;
 	int rc;
 
 	print_banner(method);
diff --git a/samples/net/http_client/src/tcp_client.c b/samples/net/http_client/src/tcp_client.c
index 1550620..850c9e5 100644
--- a/samples/net/http_client/src/tcp_client.c
+++ b/samples/net/http_client/src/tcp_client.c
@@ -14,7 +14,7 @@
 #include <misc/printk.h>
 
 static
-int set_addr(struct sockaddr *sock_addr, const char *addr, uint16_t server_port)
+int set_addr(struct sockaddr *sock_addr, const char *addr, u16_t server_port)
 {
 	void *ptr = NULL;
 	int rc;
@@ -104,7 +104,7 @@
 }
 
 int tcp_connect(struct tcp_client_ctx *ctx, const char *server_addr,
-		uint16_t server_port)
+		u16_t server_port)
 {
 #if CONFIG_NET_IPV6
 	socklen_t addr_len = sizeof(struct sockaddr_in6);
diff --git a/samples/net/http_client/src/tcp_client.h b/samples/net/http_client/src/tcp_client.h
index 011a09f..f974d03 100644
--- a/samples/net/http_client/src/tcp_client.h
+++ b/samples/net/http_client/src/tcp_client.h
@@ -16,7 +16,7 @@
 	/* Local sock address */
 	struct sockaddr local_sock;
 	/* Network timeout */
-	int32_t timeout;
+	s32_t timeout;
 	/* User defined call back*/
 	void (*receive_cb)(struct tcp_client_ctx *ctx, struct net_pkt *rx);
 };
@@ -24,7 +24,7 @@
 int tcp_set_local_addr(struct tcp_client_ctx *ctx, const char *local_addr);
 
 int tcp_connect(struct tcp_client_ctx *ctx, const char *server_addr,
-		uint16_t server_port);
+		u16_t server_port);
 
 int tcp_disconnect(struct tcp_client_ctx *ctx);
 
diff --git a/samples/net/http_server/src/http_server.c b/samples/net/http_server/src/http_server.c
index 2908c44..77f8467 100644
--- a/samples/net/http_server/src/http_server.c
+++ b/samples/net/http_server/src/http_server.c
@@ -77,8 +77,8 @@
 
 static struct http_root_url *http_url_find(struct http_server_ctx *http_ctx);
 
-static int http_url_cmp(const char *url, uint16_t url_len,
-			const char *root_url, uint16_t root_url_len);
+static int http_url_cmp(const char *url, u16_t url_len,
+			const char *root_url, u16_t root_url_len);
 
 static void http_tx(struct http_server_ctx *http_ctx);
 
@@ -87,8 +87,8 @@
 {
 	struct http_server_ctx *http_ctx = NULL;
 	struct net_buf *data = NULL;
-	uint16_t rcv_len;
-	uint16_t offset;
+	u16_t rcv_len;
+	u16_t offset;
 	int parsed_len;
 	int rc;
 
@@ -342,7 +342,7 @@
 	return 0;
 }
 
-int http_url_add(const char *url, uint8_t flags,
+int http_url_add(const char *url, u8_t flags,
 		 int (*write_cb)(struct http_server_ctx *http_ctx))
 {
 	struct http_root_url *root = NULL;
@@ -364,8 +364,8 @@
 	return 0;
 }
 
-static int http_url_cmp(const char *url, uint16_t url_len,
-			const char *root_url, uint16_t root_url_len)
+static int http_url_cmp(const char *url, u16_t url_len,
+			const char *root_url, u16_t root_url_len)
 {
 	if (url_len < root_url_len) {
 		return -EINVAL;
@@ -397,10 +397,10 @@
 
 static struct http_root_url *http_url_find(struct http_server_ctx *http_ctx)
 {
-	uint16_t url_len = http_ctx->url_len;
+	u16_t url_len = http_ctx->url_len;
 	const char *url = http_ctx->url;
 	struct http_root_url *root_url;
-	uint8_t i;
+	u8_t i;
 	int rc;
 
 	/* at some point we must come up with something better */
diff --git a/samples/net/http_server/src/http_server.h b/samples/net/http_server/src/http_server.h
index 3169fff..0a3711f 100644
--- a/samples/net/http_server/src/http_server.h
+++ b/samples/net/http_server/src/http_server.h
@@ -49,7 +49,7 @@
 
 int http_url_default_handler(int (*write_cb)(struct http_server_ctx *));
 
-int http_url_add(const char *url, uint8_t flags,
+int http_url_add(const char *url, u8_t flags,
 		 int (*write_cb)(struct http_server_ctx *http_ctx));
 
 int http_auth(struct http_server_ctx *ctx);
diff --git a/samples/net/http_server/src/http_types.h b/samples/net/http_server/src/http_types.h
index 2bcc81a..86dc345 100644
--- a/samples/net/http_server/src/http_types.h
+++ b/samples/net/http_server/src/http_types.h
@@ -28,9 +28,9 @@
  */
 struct http_root_url {
 	const char *root;
-	uint16_t root_len;
+	u16_t root_len;
 
-	uint8_t flags;
+	u8_t flags;
 	int (*write_cb)(struct http_server_ctx *http_ctx);
 };
 
@@ -39,7 +39,7 @@
  */
 struct http_url_ctx {
 	struct http_root_url urls[HTTP_MAX_NUMBER_URL];
-	uint8_t urls_ctr;
+	u8_t urls_ctr;
 };
 
 #endif
diff --git a/samples/net/http_server/src/http_utils.c b/samples/net/http_server/src/http_utils.c
index 6db5b5f..6669f51 100644
--- a/samples/net/http_server/src/http_utils.c
+++ b/samples/net/http_server/src/http_utils.c
@@ -21,13 +21,13 @@
 #ifdef CONFIG_NET_IPV6
 	struct sockaddr_in6 *addr = (struct sockaddr_in6 *)ip_addr;
 	void *raw = (void *)&addr->sin6_addr;
-	uint16_t port = addr->sin6_port;
+	u16_t port = addr->sin6_port;
 	sa_family_t family = AF_INET6;
 	char str[STR_IP6_ADDR];
 #else
 	struct sockaddr_in *addr = (struct sockaddr_in *)ip_addr;
 	void *raw = (void *)&addr->sin_addr;
-	uint16_t port = addr->sin_port;
+	u16_t port = addr->sin_port;
 	sa_family_t family = AF_INET;
 	char str[STR_IP4_ADDR];
 #endif
diff --git a/samples/net/http_server/src/http_write_utils.c b/samples/net/http_server/src/http_write_utils.c
index c94be49..a4e5ce6 100644
--- a/samples/net/http_server/src/http_write_utils.c
+++ b/samples/net/http_server/src/http_write_utils.c
@@ -29,10 +29,10 @@
 
 /* Prints the received HTTP header fields as an HTML list */
 static void print_http_headers(struct http_server_ctx *ctx,
-			       char *str, uint16_t size)
+			       char *str, u16_t size)
 {
 	struct http_parser *parser = &ctx->parser;
-	uint16_t offset = 0;
+	u16_t offset = 0;
 
 	offset = snprintf(str, size,
 			  HTML_HEADER
@@ -41,7 +41,7 @@
 		return;
 	}
 
-	for (uint8_t i = 0; i < ctx->field_values_ctr; i++) {
+	for (u8_t i = 0; i < ctx->field_values_ctr; i++) {
 		struct http_field_value *kv = &ctx->field_values[i];
 
 		offset += snprintf(str + offset, size - offset,
diff --git a/samples/net/http_server/src/https_server.c b/samples/net/http_server/src/https_server.c
index 6173c7e..d2834db 100644
--- a/samples/net/http_server/src/https_server.c
+++ b/samples/net/http_server/src/https_server.c
@@ -68,7 +68,7 @@
 
 struct parsed_url {
 	const char *url;
-	uint16_t url_len;
+	u16_t url_len;
 };
 
 #define HTTP_RESPONSE \
@@ -102,7 +102,7 @@
 static int entropy_source(void *data, unsigned char *output, size_t len,
 			  size_t *olen)
 {
-	uint32_t seed;
+	u32_t seed;
 
 	ARG_UNUSED(data);
 
@@ -366,7 +366,7 @@
 }
 
 #define STACK_SIZE		8192
-uint8_t stack[STACK_SIZE];
+u8_t stack[STACK_SIZE];
 
 static inline int init_app(void)
 {
diff --git a/samples/net/http_server/src/main.c b/samples/net/http_server/src/main.c
index ec24e51..29f7433 100644
--- a/samples/net/http_server/src/main.c
+++ b/samples/net/http_server/src/main.c
@@ -23,7 +23,7 @@
 /* Sets the network parameters */
 static
 int network_setup(struct net_context **net_ctx, net_tcp_accept_cb_t accept_cb,
-		  const char *addr, uint16_t port);
+		  const char *addr, u16_t port);
 
 #if defined(CONFIG_MBEDTLS)
 #include "ssl_utils.h"
@@ -68,7 +68,7 @@
 
 static
 int network_setup(struct net_context **net_ctx, net_tcp_accept_cb_t accept_cb,
-		  const char *addr, uint16_t port)
+		  const char *addr, u16_t port)
 {
 	struct sockaddr local_sock;
 	void *ptr;
diff --git a/samples/net/http_server/src/ssl_utils.c b/samples/net/http_server/src/ssl_utils.c
index 73ac7fa..8dd1786 100644
--- a/samples/net/http_server/src/ssl_utils.c
+++ b/samples/net/http_server/src/ssl_utils.c
@@ -76,7 +76,7 @@
 		return MBEDTLS_ERR_SSL_ALLOC_FAILED;
 	}
 
-	rc = net_pkt_append(send_buf, size, (uint8_t *) buf, K_FOREVER);
+	rc = net_pkt_append(send_buf, size, (u8_t *) buf, K_FOREVER);
 	if (!rc) {
 		net_pkt_unref(send_buf);
 		return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
@@ -98,9 +98,9 @@
 int ssl_rx(void *context, unsigned char *buf, size_t size)
 {
 	struct ssl_context *ctx = context;
-	uint16_t read_bytes;
+	u16_t read_bytes;
 	struct rx_fifo_block *rx_data;
-	uint8_t *ptr;
+	u8_t *ptr;
 	int pos;
 	int len;
 	int rc = 0;
diff --git a/samples/net/irc_bot/src/irc-bot.c b/samples/net/irc_bot/src/irc-bot.c
index d8d75e8..b38920a 100644
--- a/samples/net/irc_bot/src/irc-bot.c
+++ b/samples/net/irc_bot/src/irc-bot.c
@@ -29,10 +29,10 @@
 #endif
 
 #define STACK_SIZE	2048
-uint8_t stack[STACK_SIZE];
+u8_t stack[STACK_SIZE];
 
 #define CMD_BUFFER_SIZE 256
-static uint8_t cmd_buf[CMD_BUFFER_SIZE];
+static u8_t cmd_buf[CMD_BUFFER_SIZE];
 
 /* LED */
 #if defined(LED0_GPIO_PORT)
@@ -276,9 +276,9 @@
 {
 	struct zirc *irc = data;
 	struct net_buf *tmp;
-	uint8_t *end_of_line;
+	u8_t *end_of_line;
 	size_t len;
-	uint16_t pos = 0, cmd_len = 0;
+	u16_t pos = 0, cmd_len = 0;
 
 	if (!pkt) {
 		/* TODO: notify of disconnection, maybe reconnect? */
@@ -678,7 +678,7 @@
 on_cmd_random(struct zirc_chan *chan, const char *nick, const char *msg)
 {
 	char buf[128];
-	int32_t num = sys_rand32_get();
+	s32_t num = sys_rand32_get();
 	int ret;
 
 	switch (num & 3) {
@@ -714,7 +714,7 @@
 static bool
 read_led(void)
 {
-	uint32_t led = 0;
+	u32_t led = 0;
 	int r;
 
 	if (!led0) {
@@ -851,7 +851,7 @@
 static struct k_sem dhcpv4_ok = K_SEM_INITIALIZER(dhcpv4_ok, 0, UINT_MAX);
 
 static void ipv4_addr_add_handler(struct net_mgmt_event_callback *cb,
-				  uint32_t mgmt_event,
+				  u32_t mgmt_event,
 				  struct net_if *iface)
 {
 	char hr_addr[NET_IPV4_ADDR_LEN];
@@ -948,7 +948,7 @@
 static struct in6_addr laddr;
 
 static void ipv6_dad_ok_handler(struct net_mgmt_event_callback *cb,
-				uint32_t mgmt_event,
+				u32_t mgmt_event,
 				struct net_if *iface)
 {
 	struct net_if_addr *ifaddr;
diff --git a/samples/net/leds_demo/src/leds-demo.c b/samples/net/leds_demo/src/leds-demo.c
index 60cb8d7..44251ac 100644
--- a/samples/net/leds_demo/src/leds-demo.c
+++ b/samples/net/leds_demo/src/leds-demo.c
@@ -66,7 +66,7 @@
 
 static bool read_led(void)
 {
-	uint32_t led = 0;
+	u32_t led = 0;
 	int r;
 
 	if (!led0) {
@@ -99,8 +99,8 @@
 	struct net_buf *frag;
 	struct zoap_packet response;
 	const char *str;
-	uint8_t *payload;
-	uint16_t len, id;
+	u8_t *payload;
+	u16_t len, id;
 	int r;
 
 	id = zoap_header_get_id(request);
@@ -165,9 +165,9 @@
 	struct net_buf *frag;
 	struct zoap_packet response;
 	const char *str;
-	uint8_t *payload;
-	uint16_t len, id;
-	uint32_t led;
+	u8_t *payload;
+	u16_t len, id;
+	u32_t led;
 	int r;
 
 	payload = zoap_packet_get_payload(request, &len);
@@ -244,9 +244,9 @@
 	struct net_buf *frag;
 	struct zoap_packet response;
 	const char *str;
-	uint8_t *payload;
-	uint16_t len, id;
-	uint32_t led;
+	u8_t *payload;
+	u16_t len, id;
+	u32_t led;
 	int r;
 
 	payload = zoap_packet_get_payload(request, &len);
@@ -324,8 +324,8 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload;
-	uint16_t len, id;
+	u8_t *payload;
+	u16_t len, id;
 	int r;
 
 	id = zoap_header_get_id(request);
diff --git a/samples/net/mbedtls_dtlsclient/src/dtls_client.c b/samples/net/mbedtls_dtlsclient/src/dtls_client.c
index 5a7d2fd..60175e2 100644
--- a/samples/net/mbedtls_dtlsclient/src/dtls_client.c
+++ b/samples/net/mbedtls_dtlsclient/src/dtls_client.c
@@ -77,9 +77,9 @@
 };
 
 struct dtls_timing_context {
-	uint32_t snapshot;
-	uint32_t int_ms;
-	uint32_t fin_ms;
+	u32_t snapshot;
+	u32_t int_ms;
+	u32_t fin_ms;
 };
 
 static void my_debug(void *ctx, int level,
@@ -97,7 +97,7 @@
 	mbedtls_printf("%s:%04d: |%d| %s", basename, line, level, str);
 }
 
-void dtls_timing_set_delay(void *data, uint32_t int_ms, uint32_t fin_ms)
+void dtls_timing_set_delay(void *data, u32_t int_ms, u32_t fin_ms)
 {
 	struct dtls_timing_context *ctx = (struct dtls_timing_context *)data;
 
@@ -131,7 +131,7 @@
 static int entropy_source(void *data, unsigned char *output, size_t len,
 			  size_t *olen)
 {
-	uint32_t seed;
+	u32_t seed;
 
 	seed = sys_rand32_get();
 	if (len > sizeof(seed)) {
@@ -284,7 +284,7 @@
 }
 
 #define STACK_SIZE		8192
-uint8_t stack[STACK_SIZE];
+u8_t stack[STACK_SIZE];
 
 static inline int init_app(void)
 {
diff --git a/samples/net/mbedtls_dtlsclient/src/udp.c b/samples/net/mbedtls_dtlsclient/src/udp.c
index f2ea5b4..f2b082a 100644
--- a/samples/net/mbedtls_dtlsclient/src/udp.c
+++ b/samples/net/mbedtls_dtlsclient/src/udp.c
@@ -86,7 +86,7 @@
 		return -EIO;
 	}
 
-	rc = net_pkt_append(send_buf, size, (uint8_t *) buf, K_FOREVER);
+	rc = net_pkt_append(send_buf, size, (u8_t *) buf, K_FOREVER);
 	if (!rc) {
 		printk("cannot write buf\n");
 		net_pkt_unref(send_buf);
@@ -112,8 +112,8 @@
 {
 	struct udp_context *ctx = context;
 	struct net_buf *rx_buf = NULL;
-	uint16_t read_bytes;
-	uint8_t *ptr;
+	u16_t read_bytes;
+	u8_t *ptr;
 	int pos;
 	int len;
 	int rc;
diff --git a/samples/net/mbedtls_dtlsserver/src/dtls_server.c b/samples/net/mbedtls_dtlsserver/src/dtls_server.c
index 0db4e57..97822a8 100644
--- a/samples/net/mbedtls_dtlsserver/src/dtls_server.c
+++ b/samples/net/mbedtls_dtlsserver/src/dtls_server.c
@@ -63,9 +63,9 @@
 #endif
 
 struct dtls_timing_context {
-	uint32_t snapshot;
-	uint32_t int_ms;
-	uint32_t fin_ms;
+	u32_t snapshot;
+	u32_t int_ms;
+	u32_t fin_ms;
 };
 
 static void my_debug(void *ctx, int level,
@@ -86,7 +86,7 @@
 	mbedtls_printf("%s:%04d: |%d| %s", basename, line, level, str);
 }
 
-void dtls_timing_set_delay(void *data, uint32_t int_ms, uint32_t fin_ms)
+void dtls_timing_set_delay(void *data, u32_t int_ms, u32_t fin_ms)
 {
 	struct dtls_timing_context *ctx = (struct dtls_timing_context *)data;
 
@@ -123,7 +123,7 @@
 static int entropy_source(void *data, unsigned char *output, size_t len,
 			  size_t *olen)
 {
-	uint32_t seed;
+	u32_t seed;
 
 	ARG_UNUSED(data);
 
@@ -362,7 +362,7 @@
 }
 
 #define STACK_SIZE		8192
-uint8_t stack[STACK_SIZE];
+u8_t stack[STACK_SIZE];
 
 static inline int init_app(void)
 {
diff --git a/samples/net/mbedtls_dtlsserver/src/udp.c b/samples/net/mbedtls_dtlsserver/src/udp.c
index c3b755c..d8e1c0f 100644
--- a/samples/net/mbedtls_dtlsserver/src/udp.c
+++ b/samples/net/mbedtls_dtlsserver/src/udp.c
@@ -66,7 +66,7 @@
 		return -EIO;
 	}
 
-	rc = net_pkt_append(send_buf, size, (uint8_t *) buf, K_FOREVER);
+	rc = net_pkt_append(send_buf, size, (u8_t *) buf, K_FOREVER);
 	if (!rc) {
 		printk("cannot write buf\n");
 		return -EIO;
@@ -91,8 +91,8 @@
 	struct udp_context *ctx = context;
 	struct net_context *net_ctx = ctx->net_ctx;
 	struct net_buf *rx_buf = NULL;
-	uint16_t read_bytes;
-	uint8_t *ptr;
+	u16_t read_bytes;
+	u8_t *ptr;
 	int pos;
 	int len;
 	int rc;
diff --git a/samples/net/mbedtls_sslclient/src/mini_client.c b/samples/net/mbedtls_sslclient/src/mini_client.c
index c1e8f99..806694d 100644
--- a/samples/net/mbedtls_sslclient/src/mini_client.c
+++ b/samples/net/mbedtls_sslclient/src/mini_client.c
@@ -139,7 +139,7 @@
 static int entropy_source(void *data, unsigned char *output, size_t len,
 			  size_t *olen)
 {
-	uint32_t seed;
+	u32_t seed;
 
 	ARG_UNUSED(data);
 
@@ -315,7 +315,7 @@
 }
 
 #define STACK_SIZE		8192
-uint8_t stack[STACK_SIZE];
+u8_t stack[STACK_SIZE];
 
 void main(void)
 {
diff --git a/samples/net/mbedtls_sslclient/src/tcp.c b/samples/net/mbedtls_sslclient/src/tcp.c
index e24acf5..e845b62 100644
--- a/samples/net/mbedtls_sslclient/src/tcp.c
+++ b/samples/net/mbedtls_sslclient/src/tcp.c
@@ -55,7 +55,7 @@
 		return -EIO;
 	}
 
-	rc = net_pkt_append(send_pkt, size, (uint8_t *) buf, K_FOREVER);
+	rc = net_pkt_append(send_pkt, size, (u8_t *) buf, K_FOREVER);
 	if (!rc) {
 		printk("cannot write buf\n");
 		return -EIO;
@@ -79,9 +79,9 @@
 	struct net_buf *data = NULL;
 	struct tcp_context *ctx = context;
 	int rc;
-	uint8_t *ptr;
+	u8_t *ptr;
 	int read_bytes;
-	uint16_t offset;
+	u16_t offset;
 
 	rc = net_context_recv(ctx->net_ctx, tcp_received, K_FOREVER, ctx);
 	if (rc != 0) {
@@ -109,7 +109,7 @@
 }
 
 static int set_addr(struct sockaddr *sock_addr, const char *addr,
-		    uint16_t server_port)
+		    u16_t server_port)
 {
 	void *ptr = NULL;
 	int rc;
@@ -174,7 +174,7 @@
 }
 
 int tcp_init(struct tcp_context *ctx, const char *server_addr,
-	     uint16_t server_port)
+	     u16_t server_port)
 {
 	struct sockaddr server_sock;
 	int rc;
diff --git a/samples/net/mbedtls_sslclient/src/tcp.h b/samples/net/mbedtls_sslclient/src/tcp.h
index 0ff77e1..15996a6 100644
--- a/samples/net/mbedtls_sslclient/src/tcp.h
+++ b/samples/net/mbedtls_sslclient/src/tcp.h
@@ -15,11 +15,11 @@
 	struct net_context *net_ctx;
 	struct sockaddr local_sock;
 	struct net_pkt *rx_pkt;
-	int32_t timeout;
+	s32_t timeout;
 };
 
 int tcp_init(struct tcp_context *ctx, const char *server_addr,
-		uint16_t server_port);
+		u16_t server_port);
 
 int tcp_tx(void *ctx, const unsigned char *buf, size_t size);
 int tcp_rx(void *ctx, unsigned char *buf, size_t size);
diff --git a/samples/net/mqtt_publisher/src/main.c b/samples/net/mqtt_publisher/src/main.c
index f9f4876..f6c4274 100644
--- a/samples/net/mqtt_publisher/src/main.c
+++ b/samples/net/mqtt_publisher/src/main.c
@@ -67,7 +67,7 @@
 
 /* This routine sets some basic properties for the network context variable */
 static int network_setup(struct net_context **net_ctx, const char *local_addr,
-			 const char *server_addr, uint16_t server_port);
+			 const char *server_addr, u16_t server_port);
 
 /* The signature of this routine must match the connect callback declared at
  * the mqtt.h header.
@@ -120,7 +120,7 @@
  * unknown pkt_id, this routine must return an error, for example -EINVAL or
  * any negative value.
  */
-static int publish_cb(struct mqtt_ctx *mqtt_ctx, uint16_t pkt_id,
+static int publish_cb(struct mqtt_ctx *mqtt_ctx, u16_t pkt_id,
 		      enum mqtt_packet type)
 {
 	struct mqtt_client_ctx *client_ctx;
@@ -160,7 +160,7 @@
  * The signature of this routine must match the malformed callback declared at
  * the mqtt.h header.
  */
-static void malformed_cb(struct mqtt_ctx *mqtt_ctx, uint16_t pkt_type)
+static void malformed_cb(struct mqtt_ctx *mqtt_ctx, u16_t pkt_type)
 {
 	printk("[%s:%d] pkt_type: %u\n", __func__, __LINE__, pkt_type);
 }
@@ -171,7 +171,7 @@
 	static char payload[30];
 
 	snprintk(payload, sizeof(payload), "{d:{temperature:%d}}",
-		 (uint8_t)sys_rand32_get());
+		 (u8_t)sys_rand32_get());
 #else
 	static char payload[] = "DOORS:OPEN_QoSx";
 
@@ -323,7 +323,7 @@
 	printk("\nBye!\n");
 }
 
-static int set_addr(struct sockaddr *sock_addr, const char *addr, uint16_t port)
+static int set_addr(struct sockaddr *sock_addr, const char *addr, u16_t port)
 {
 	void *ptr;
 	int rc;
@@ -351,13 +351,13 @@
 static bool bt_connected;
 
 static
-void bt_connect_cb(struct bt_conn *conn, uint8_t err)
+void bt_connect_cb(struct bt_conn *conn, u8_t err)
 {
 	bt_connected = true;
 }
 
 static
-void bt_disconnect_cb(struct bt_conn *conn, uint8_t reason)
+void bt_disconnect_cb(struct bt_conn *conn, u8_t reason)
 {
 	bt_connected = false;
 	printk("bt disconnected (reason %u)\n", reason);
@@ -371,7 +371,7 @@
 #endif
 
 static int network_setup(struct net_context **net_ctx, const char *local_addr,
-			 const char *server_addr, uint16_t server_port)
+			 const char *server_addr, u16_t server_port)
 {
 #ifdef CONFIG_NET_IPV6
 	socklen_t addr_len = sizeof(struct sockaddr_in6);
diff --git a/samples/net/nats/src/main.c b/samples/net/nats/src/main.c
index 31f93ed..f917b61 100644
--- a/samples/net/nats/src/main.c
+++ b/samples/net/nats/src/main.c
@@ -70,7 +70,7 @@
 /* Default server */
 #define DEFAULT_PORT		4222
 
-static uint8_t stack[2048];
+static u8_t stack[2048];
 
 static void panic(const char *msg)
 {
@@ -172,7 +172,7 @@
 
 static bool read_led(void)
 {
-	uint32_t led = 0;
+	u32_t led = 0;
 	int r;
 
 	if (!led0) {
@@ -241,7 +241,7 @@
 	}
 }
 
-static int connect(struct nats *nats, uint16_t port)
+static int connect(struct nats *nats, u16_t port)
 {
 #if defined(CONFIG_NET_IPV4) && defined(CONFIG_NET_DHCPV4)
 	struct net_if *iface;
diff --git a/samples/net/nats/src/nats.c b/samples/net/nats/src/nats.c
index dbff8f2..720c467 100644
--- a/samples/net/nats/src/nats.c
+++ b/samples/net/nats/src/nats.c
@@ -30,7 +30,7 @@
 	const char *go;
 	const char *host;
 	size_t max_payload;
-	uint16_t port;
+	u16_t port;
 	bool ssl_required;
 	bool auth_required;
 };
@@ -132,7 +132,7 @@
 	.type = type_ \
 }
 static int handle_server_info(struct nats *nats, char *payload, size_t len,
-			      struct net_buf *buf, uint16_t offset)
+			      struct net_buf *buf, u16_t offset)
 {
 	static const struct json_obj_descr descr[] = {
 		FIELD(struct nats_info, server_id, JSON_TOK_STRING),
@@ -231,11 +231,11 @@
 	return NULL;
 }
 
-static int copy_pkt_to_buf(struct net_buf *src, uint16_t offset,
+static int copy_pkt_to_buf(struct net_buf *src, u16_t offset,
 			    char *dst, size_t dst_size, size_t n_bytes)
 {
-	uint16_t to_copy;
-	uint16_t copied;
+	u16_t to_copy;
+	u16_t copied;
 
 	if (dst_size < n_bytes) {
 		return -ENOMEM;
@@ -264,7 +264,7 @@
 }
 
 static int handle_server_msg(struct nats *nats, char *payload, size_t len,
-			     struct net_buf *buf, uint16_t offset)
+			     struct net_buf *buf, u16_t offset)
 {
 	char *subject, *sid, *reply_to, *bytes, *end_ptr;
 	char prev_end = payload[len];
@@ -320,7 +320,7 @@
 }
 
 static int handle_server_ping(struct nats *nats, char *payload, size_t len,
-			      struct net_buf *buf, uint16_t offset)
+			      struct net_buf *buf, u16_t offset)
 {
 	static const char pong[] = "PONG\r\n";
 
@@ -328,7 +328,7 @@
 }
 
 static int ignore(struct nats *nats, char *payload, size_t len,
-		  struct net_buf *buf, uint16_t offset)
+		  struct net_buf *buf, u16_t offset)
 {
 	/* FIXME: Notify user of success/errors.  This would require
 	 * maintaining information of what was the last sent command in
@@ -345,13 +345,13 @@
 	.handle = handler_ \
 }
 static int handle_server_cmd(struct nats *nats, char *cmd, size_t len,
-			     struct net_buf *buf, uint16_t offset)
+			     struct net_buf *buf, u16_t offset)
 {
 	static const struct {
 		const char *op;
 		size_t len;
 		int (*handle)(struct nats *nats, char *payload, size_t len,
-			      struct net_buf *buf, uint16_t offset);
+			      struct net_buf *buf, u16_t offset);
 	} cmds[] = {
 		CMD("INFO", handle_server_info),
 		CMD("MSG", handle_server_msg),
@@ -537,9 +537,9 @@
 	struct nats *nats = user_data;
 	char cmd_buf[CMD_BUF_LEN];
 	struct net_buf *tmp;
-	uint16_t pos = 0, cmd_len = 0;
+	u16_t pos = 0, cmd_len = 0;
 	size_t len;
-	uint8_t *end_of_line;
+	u8_t *end_of_line;
 
 	if (!pkt) {
 		/* FIXME: How to handle disconnection? */
@@ -558,9 +558,9 @@
 	while (tmp) {
 		len = tmp->len - pos;
 
-		end_of_line = memchr((uint8_t *)tmp->data + pos, '\n', len);
+		end_of_line = memchr((u8_t *)tmp->data + pos, '\n', len);
 		if (end_of_line) {
-			len = end_of_line - ((uint8_t *)tmp->data + pos);
+			len = end_of_line - ((u8_t *)tmp->data + pos);
 		}
 
 		if (cmd_len + len > sizeof(cmd_buf)) {
diff --git a/samples/net/telnet/src/telnet.c b/samples/net/telnet/src/telnet.c
index 31c1ca7..4a0b45e 100644
--- a/samples/net/telnet/src/telnet.c
+++ b/samples/net/telnet/src/telnet.c
@@ -26,7 +26,7 @@
 static struct net_mgmt_event_callback mgmt_cb;
 
 static void ipv4_addr_add_handler(struct net_mgmt_event_callback *cb,
-				  uint32_t mgmt_event,
+				  u32_t mgmt_event,
 				  struct net_if *iface)
 {
 	char hr_addr[NET_IPV4_ADDR_LEN];
diff --git a/samples/net/wpan_serial/src/main.c b/samples/net/wpan_serial/src/main.c
index fdfab17..fff2172 100644
--- a/samples/net/wpan_serial/src/main.c
+++ b/samples/net/wpan_serial/src/main.c
@@ -50,25 +50,25 @@
 static char __noinit __stack tx_stack[1024];
 
 /* Buffer for SLIP encoded data for the worst case */
-static uint8_t slip_buf[1 + 2 * CONFIG_NET_BUF_DATA_SIZE];
+static u8_t slip_buf[1 + 2 * CONFIG_NET_BUF_DATA_SIZE];
 
 /* ieee802.15.4 device */
 static struct ieee802154_radio_api *radio_api;
 static struct device *ieee802154_dev;
-uint8_t mac_addr[8];
+u8_t mac_addr[8];
 
 /* UART device */
 static struct device *uart_dev;
 
 /* SLIP state machine */
-static uint8_t slip_state = STATE_OK;
+static u8_t slip_state = STATE_OK;
 
 static struct net_pkt *pkt_curr;
 
 /* General helpers */
 
 #ifdef VERBOSE_DEBUG
-static void hexdump(const char *str, const uint8_t *packet, size_t length)
+static void hexdump(const char *str, const u8_t *packet, size_t length)
 {
 	int n = 0;
 
@@ -216,7 +216,7 @@
 }
 
 /* Allocate and send data to USB Host */
-static void send_data(uint8_t *cfg, uint8_t *data, size_t len)
+static void send_data(u8_t *cfg, u8_t *data, size_t len)
 {
 	struct net_pkt *pkt;
 	struct net_buf *buf;
@@ -253,8 +253,8 @@
 
 static void get_ieee_addr(void)
 {
-	uint8_t cfg[2] = { '!', 'M' };
-	uint8_t mac[8];
+	u8_t cfg[2] = { '!', 'M' };
+	u8_t mac[8];
 
 	SYS_LOG_DBG("");
 
@@ -266,7 +266,7 @@
 
 static void process_request(struct net_buf *buf)
 {
-	uint8_t cmd = net_buf_pull_u8(buf);
+	u8_t cmd = net_buf_pull_u8(buf);
 
 
 	switch (cmd) {
@@ -279,10 +279,10 @@
 	}
 }
 
-static void send_pkt_report(uint8_t seq, uint8_t status, uint8_t num_tx)
+static void send_pkt_report(u8_t seq, u8_t status, u8_t num_tx)
 {
-	uint8_t cfg[2] = { '!', 'R' };
-	uint8_t report[3];
+	u8_t cfg[2] = { '!', 'R' };
+	u8_t report[3];
 
 	report[0] = seq;
 	report[1] = status;
@@ -294,7 +294,7 @@
 static void process_data(struct net_pkt *pkt)
 {
 	struct net_buf *buf = net_buf_frag_last(pkt->frags);
-	uint8_t seq, num_attr;
+	u8_t seq, num_attr;
 	int ret, i;
 
 	seq = net_buf_pull_u8(buf);
@@ -327,7 +327,7 @@
 	send_pkt_report(seq, ret, 1);
 }
 
-static void set_channel(uint8_t chan)
+static void set_channel(u8_t chan)
 {
 	SYS_LOG_DBG("Set channel %c", chan);
 
@@ -337,7 +337,7 @@
 static void process_config(struct net_pkt *pkt)
 {
 	struct net_buf *buf = net_buf_frag_last(pkt->frags);
-	uint8_t cmd = net_buf_pull_u8(buf);
+	u8_t cmd = net_buf_pull_u8(buf);
 
 	SYS_LOG_DBG("Process config %c", cmd);
 
@@ -360,7 +360,7 @@
 	while (1) {
 		struct net_pkt *pkt;
 		struct net_buf *buf;
-		uint8_t specifier;
+		u8_t specifier;
 
 		pkt = k_fifo_get(&rx_queue, K_FOREVER);
 		buf = net_buf_frag_last(pkt->frags);
@@ -389,10 +389,10 @@
 	}
 }
 
-static size_t slip_buffer(uint8_t *sbuf, struct net_buf *buf)
+static size_t slip_buffer(u8_t *sbuf, struct net_buf *buf)
 {
 	size_t len = buf->len;
-	uint8_t *sbuf_orig = sbuf;
+	u8_t *sbuf_orig = sbuf;
 	int i;
 
 	/**
@@ -401,7 +401,7 @@
 	 */
 
 	for (i = 0; i < len; i++) {
-		uint8_t byte = net_buf_pull_u8(buf);
+		u8_t byte = net_buf_pull_u8(buf);
 
 		switch (byte) {
 		case SLIP_END:
@@ -486,9 +486,9 @@
 /**
  * FIXME choose correct OUI, or add support in L2
  */
-static uint8_t *get_mac(struct device *dev)
+static u8_t *get_mac(struct device *dev)
 {
-	uint32_t *ptr = (uint32_t *)mac_addr;
+	u32_t *ptr = (u32_t *)mac_addr;
 
 	mac_addr[7] = 0x00;
 	mac_addr[6] = 0x12;
@@ -504,7 +504,7 @@
 
 static bool init_ieee802154(void)
 {
-	uint16_t short_addr;
+	u16_t short_addr;
 
 	SYS_LOG_INF("Initialize ieee802.15.4");
 
@@ -548,7 +548,7 @@
 void main(void)
 {
 	struct device *dev;
-	uint32_t baudrate, dtr = 0;
+	u32_t baudrate, dtr = 0;
 	int ret;
 
 	dev = device_get_binding(CONFIG_CDC_ACM_PORT_NAME);
diff --git a/samples/net/wpanusb/src/wpanusb.c b/samples/net/wpanusb/src/wpanusb.c
index d258a1b..9ee8c50 100644
--- a/samples/net/wpanusb/src/wpanusb.c
+++ b/samples/net/wpanusb/src/wpanusb.c
@@ -84,14 +84,14 @@
 struct wpanusb_dev_data_t {
 	/* USB device status code */
 	enum usb_dc_status_code usb_status;
-	uint8_t interface_data[WPANUSB_CLASS_MAX_DATA_SIZE];
-	uint8_t notification_sent;
+	u8_t interface_data[WPANUSB_CLASS_MAX_DATA_SIZE];
+	u8_t notification_sent;
 };
 
 /**
  * ieee802.15.4 USB descriptors configuration
  */
-static const uint8_t wpanusb_desc[] = {
+static const u8_t wpanusb_desc[] = {
 	/* Device descriptor */
 	USB_DEVICE_DESC_SIZE,		/* Descriptor size */
 	USB_DEVICE_DESC,		/* Descriptor type */
@@ -176,7 +176,7 @@
 
 #ifdef VERBOSE_DEBUG
 /* TODO: move to standard utils */
-static void hexdump(const char *str, const uint8_t *packet, size_t length)
+static void hexdump(const char *str, const u8_t *packet, size_t length)
 {
 	int n = 0;
 
@@ -211,7 +211,7 @@
 #endif
 
 /* EP Bulk IN handler, used to send data to the Host */
-static void wpanusb_bulk_in(uint8_t ep, enum usb_dc_ep_cb_status_code ep_status)
+static void wpanusb_bulk_in(u8_t ep, enum usb_dc_ep_cb_status_code ep_status)
 {
 }
 
@@ -261,7 +261,7 @@
 }
 
 static int wpanusb_class_handler(struct usb_setup_packet *setup,
-				 int32_t *len, uint8_t **data)
+				 s32_t *len, u8_t **data)
 {
 	SYS_LOG_DBG("len %d", *len);
 
@@ -271,7 +271,7 @@
 }
 
 static int wpanusb_custom_handler(struct usb_setup_packet *setup,
-				  int32_t *len, uint8_t **data)
+				  s32_t *len, u8_t **data)
 {
 	/**
 	 * FIXME:
@@ -281,7 +281,7 @@
 	return -ENOTSUP;
 }
 
-static int try_write(uint8_t ep, uint8_t *data, uint16_t len)
+static int try_write(u8_t ep, u8_t *data, u16_t len)
 {
 	while (1) {
 		int ret = usb_write(ep, data, len, NULL);
@@ -314,7 +314,7 @@
 	SYS_LOG_DBG("len %u", len);
 
 	return radio_api->set_ieee_addr(ieee802154_dev,
-					(uint8_t *)&req->ieee_addr);
+					(u8_t *)&req->ieee_addr);
 }
 
 static int set_short_addr(void *data, int len)
@@ -352,7 +352,7 @@
 static int tx(struct net_pkt *pkt)
 {
 	struct net_buf *buf = net_buf_frag_last(pkt->frags);
-	uint8_t seq = net_buf_pull_u8(buf);
+	u8_t seq = net_buf_pull_u8(buf);
 	int retries = 3;
 	int ret;
 
@@ -378,7 +378,7 @@
  * later processing
  */
 static int wpanusb_vendor_handler(struct usb_setup_packet *setup,
-				  int32_t *len, uint8_t **data)
+				  s32_t *len, u8_t **data)
 {
 	struct net_pkt *pkt;
 	struct net_buf *buf;
@@ -417,7 +417,7 @@
 	SYS_LOG_DBG("Tx thread started");
 
 	while (1) {
-		uint8_t cmd;
+		u8_t cmd;
 		struct net_pkt *pkt;
 		struct net_buf *buf;
 
@@ -464,7 +464,7 @@
 }
 
 /* TODO: FIXME: correct buffer size */
-static uint8_t buffer[300];
+static u8_t buffer[300];
 
 static struct usb_cfg_data wpanusb_config = {
 	.usb_device_description = wpanusb_desc,
diff --git a/samples/net/wpanusb/src/wpanusb.h b/samples/net/wpanusb/src/wpanusb.h
index a0cd115..7eeeadc 100644
--- a/samples/net/wpanusb/src/wpanusb.h
+++ b/samples/net/wpanusb/src/wpanusb.h
@@ -23,18 +23,18 @@
 };
 
 struct set_channel {
-	uint8_t page;
-	uint8_t channel;
+	u8_t page;
+	u8_t channel;
 } __packed;
 
 struct set_short_addr {
-	uint16_t short_addr;
+	u16_t short_addr;
 } __packed;
 
 struct set_pan_id {
-	uint16_t pan_id;
+	u16_t pan_id;
 } __packed;
 
 struct set_ieee_addr {
-	uint64_t ieee_addr;
+	u64_t ieee_addr;
 } __packed;
diff --git a/samples/net/zoap_client/src/zoap-client.c b/samples/net/zoap_client/src/zoap-client.c
index b8d76a8..41adf31 100644
--- a/samples/net/zoap_client/src/zoap-client.c
+++ b/samples/net/zoap_client/src/zoap-client.c
@@ -46,7 +46,7 @@
 
 static const char * const test_path[] = { "test", NULL };
 
-static void msg_dump(const char *s, uint8_t *data, unsigned len)
+static void msg_dump(const char *s, u8_t *data, unsigned len)
 {
 	unsigned i;
 
@@ -134,7 +134,7 @@
 }
 
 static void event_iface_up(struct net_mgmt_event_callback *cb,
-			   uint32_t mgmt_event, struct net_if *iface)
+			   u32_t mgmt_event, struct net_if *iface)
 {
 	static struct sockaddr_in6 any_addr = { .sin6_addr = IN6ADDR_ANY_INIT,
 						.sin6_family = AF_INET6 };
@@ -145,7 +145,7 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	int r;
-	uint8_t observe = 0;
+	u8_t observe = 0;
 
 	r = net_context_get(PF_INET6, SOCK_DGRAM, IPPROTO_UDP, &context);
 	if (r) {
diff --git a/samples/net/zoap_server/src/zoap-server.c b/samples/net/zoap_server/src/zoap-server.c
index ce745df..c50b14b 100644
--- a/samples/net/zoap_server/src/zoap-server.c
+++ b/samples/net/zoap_server/src/zoap-server.c
@@ -52,7 +52,7 @@
 
 static struct net_context *context;
 
-static const uint8_t plain_text_format;
+static const u8_t plain_text_format;
 
 static struct zoap_observer observers[NUM_OBSERVERS];
 
@@ -75,9 +75,9 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t tkl, code, type;
-	const uint8_t *token;
-	uint16_t id;
+	u8_t tkl, code, type;
+	const u8_t *token;
+	u16_t id;
 	int r;
 
 	code = zoap_header_get_code(request);
@@ -123,9 +123,9 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload, code, type, tkl;
-	const uint8_t *token;
-	uint16_t len, id;
+	u8_t *payload, code, type, tkl;
+	const u8_t *token;
+	u16_t len, id;
 	int r;
 
 	payload = zoap_packet_get_payload(request, &len);
@@ -181,9 +181,9 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload, code, type, tkl;
-	const uint8_t *token;
-	uint16_t len, id;
+	u8_t *payload, code, type, tkl;
+	const u8_t *token;
+	u16_t len, id;
 	int r;
 
 	payload = zoap_packet_get_payload(request, &len);
@@ -244,9 +244,9 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload, code, type, tkl;
-	const uint8_t *token;
-	uint16_t len, id;
+	u8_t *payload, code, type, tkl;
+	const u8_t *token;
+	u16_t len, id;
 	int r;
 
 	payload = zoap_packet_get_payload(request, &len);
@@ -303,10 +303,10 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	const uint8_t *token;
-	uint8_t *payload, code, type;
-	uint16_t len, id;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t *payload, code, type;
+	u16_t len, id;
+	u8_t tkl;
 	int r;
 
 	code = zoap_header_get_code(request);
@@ -377,9 +377,9 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload, code, type, tkl;
-	const uint8_t *token;
-	uint16_t len, id;
+	u8_t *payload, code, type, tkl;
+	const u8_t *token;
+	u16_t len, id;
 	int i, r;
 
 	code = zoap_header_get_code(request);
@@ -466,9 +466,9 @@
 	struct net_buf *frag;
 	struct zoap_packet response;
 	struct zoap_pending *pending;
-	uint8_t *payload, code, type, tkl;
-	const uint8_t *token;
-	uint16_t len, id;
+	u8_t *payload, code, type, tkl;
+	const u8_t *token;
+	u16_t len, id;
 	int r;
 
 	code = zoap_header_get_code(request);
@@ -583,10 +583,10 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	const uint8_t *token;
-	uint8_t *payload, code, type;
-	uint16_t len, id, size;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t *payload, code, type;
+	u16_t len, id, size;
+	u8_t tkl;
 	int r;
 
 	if (ctx.total_size == 0) {
@@ -673,10 +673,10 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	const uint8_t *token;
-	uint8_t *payload, code, type;
-	uint16_t len, id;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t *payload, code, type;
+	u16_t len, id;
+	u8_t tkl;
 	int r;
 
 	if (ctx.total_size == 0) {
@@ -753,10 +753,10 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	const uint8_t *token;
-	uint8_t *payload, code, type;
-	uint16_t len, id;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t *payload, code, type;
+	u16_t len, id;
+	u8_t tkl;
 	int r;
 
 	if (ctx.total_size == 0) {
@@ -827,17 +827,17 @@
 	k_delayed_work_submit(&observer_work, 5 * MSEC_PER_SEC);
 }
 
-static int send_notification_packet(const struct sockaddr *addr, uint16_t age,
-				    socklen_t addrlen, uint16_t id,
-				    const uint8_t *token, uint8_t tkl,
+static int send_notification_packet(const struct sockaddr *addr, u16_t age,
+				    socklen_t addrlen, u16_t id,
+				    const u8_t *token, u8_t tkl,
 				    bool is_response)
 {
 	struct zoap_packet response;
 	struct zoap_pending *pending;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint8_t *payload, type = ZOAP_TYPE_CON;
-	uint16_t len;
+	u8_t *payload, type = ZOAP_TYPE_CON;
+	u16_t len;
 	int r;
 
 	pkt = net_pkt_get_tx(context, K_FOREVER);
@@ -918,10 +918,10 @@
 		   const struct sockaddr *from)
 {
 	struct zoap_observer *observer;
-	const uint8_t *token;
-	uint8_t code, type;
-	uint16_t id;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t code, type;
+	u16_t id;
+	u8_t tkl;
 	bool observe = true;
 
 	if (!zoap_request_is_observe(request)) {
@@ -971,9 +971,9 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet response;
-	uint8_t *payload, tkl;
-	const uint8_t *token;
-	uint16_t len, id;
+	u8_t *payload, tkl;
+	const u8_t *token;
+	u16_t len, id;
 	int r;
 
 	id = zoap_header_get_id(request);
diff --git a/samples/net/zperf/src/shell_utils.c b/samples/net/zperf/src/shell_utils.c
index 12740c4..e46ab58 100644
--- a/samples/net/zperf/src/shell_utils.c
+++ b/samples/net/zperf/src/shell_utils.c
@@ -14,19 +14,19 @@
 
 #include "shell_utils.h"
 
-const uint32_t TIME_US[] = { 60 * 1000 * 1000, 1000 * 1000, 1000, 0 };
+const u32_t TIME_US[] = { 60 * 1000 * 1000, 1000 * 1000, 1000, 0 };
 const char *TIME_US_UNIT[] = { "m", "s", "ms", "us" };
-const uint32_t KBPS[] = { 1024, 0 };
+const u32_t KBPS[] = { 1024, 0 };
 const char *KBPS_UNIT[] = { "Mbps", "Kbps" };
-const uint32_t K[] = { 1024 * 1024, 1024, 0 };
+const u32_t K[] = { 1024 * 1024, 1024, 0 };
 const char *K_UNIT[] = { "M", "K", "" };
 
-void print_number(uint32_t value, const uint32_t *divisor,
+void print_number(u32_t value, const u32_t *divisor,
 	const char **units)
 {
 	const char **unit;
-	const uint32_t *div;
-	uint32_t dec, radix;
+	const u32_t *div;
+	u32_t dec, radix;
 
 	unit = units;
 	div = divisor;
@@ -45,11 +45,11 @@
 	}
 }
 
-long parse_number(const char *string, const uint32_t *divisor,
+long parse_number(const char *string, const u32_t *divisor,
 		const char **units)
 {
 	const char **unit;
-	const uint32_t *div;
+	const u32_t *div;
 	char *suffix;
 	long dec;
 	int cmp;
diff --git a/samples/net/zperf/src/shell_utils.h b/samples/net/zperf/src/shell_utils.h
index 6116c2b..ae283fd 100644
--- a/samples/net/zperf/src/shell_utils.h
+++ b/samples/net/zperf/src/shell_utils.h
@@ -9,15 +9,15 @@
 #define IPV4_STR_LEN_MAX 15
 #define IPV4_STR_LEN_MIN 7
 
-extern const uint32_t TIME_US[];
+extern const u32_t TIME_US[];
 extern const char *TIME_US_UNIT[];
-extern const uint32_t KBPS[];
+extern const u32_t KBPS[];
 extern const char *KBPS_UNIT[];
-extern const uint32_t K[];
+extern const u32_t K[];
 extern const char *K_UNIT[];
 
-extern void print_number(uint32_t value, const uint32_t *divisor,
+extern void print_number(u32_t value, const u32_t *divisor,
 		const char **units);
-extern long parse_number(const char *string, const uint32_t *divisor,
+extern long parse_number(const char *string, const u32_t *divisor,
 		const char **units);
 #endif /* __SHELL_UTILS_H */
diff --git a/samples/net/zperf/src/zperf.h b/samples/net/zperf/src/zperf.h
index 5630d92..dc7e203 100644
--- a/samples/net/zperf/src/zperf.h
+++ b/samples/net/zperf/src/zperf.h
@@ -20,16 +20,16 @@
 #define CMD_STR_TCP_DOWNLOAD "tcp.download"
 
 struct zperf_results {
-	uint32_t nb_packets_sent;
-	uint32_t nb_packets_rcvd;
-	uint32_t nb_packets_lost;
-	uint32_t nb_packets_outorder;
-	uint32_t nb_bytes_sent;
-	uint32_t time_in_us;
-	uint32_t jitter_in_us;
-	uint32_t client_time_in_us;
-	uint32_t packet_size;
-	uint32_t nb_packets_errors;
+	u32_t nb_packets_sent;
+	u32_t nb_packets_rcvd;
+	u32_t nb_packets_lost;
+	u32_t nb_packets_outorder;
+	u32_t nb_bytes_sent;
+	u32_t time_in_us;
+	u32_t jitter_in_us;
+	u32_t client_time_in_us;
+	u32_t packet_size;
+	u32_t nb_packets_errors;
 };
 
 typedef void (*zperf_callback)(int status, struct zperf_results *);
diff --git a/samples/net/zperf/src/zperf_internal.h b/samples/net/zperf/src/zperf_internal.h
index 136cce6..5e63af8 100644
--- a/samples/net/zperf/src/zperf_internal.h
+++ b/samples/net/zperf/src/zperf_internal.h
@@ -30,50 +30,50 @@
 
 #define HW_CYCLES_TO_USEC(__hw_cycle__) \
 	( \
-		((uint64_t)(__hw_cycle__) * (uint64_t)sys_clock_us_per_tick) / \
-		((uint64_t)sys_clock_hw_cycles_per_tick) \
+		((u64_t)(__hw_cycle__) * (u64_t)sys_clock_us_per_tick) / \
+		((u64_t)sys_clock_hw_cycles_per_tick) \
 	)
 
 #define HW_CYCLES_TO_SEC(__hw_cycle__) \
 	( \
-		((uint64_t)(HW_CYCLES_TO_USEC(__hw_cycle__))) / \
-		((uint64_t)USEC_PER_SEC) \
+		((u64_t)(HW_CYCLES_TO_USEC(__hw_cycle__))) / \
+		((u64_t)USEC_PER_SEC) \
 	)
 
 #define USEC_TO_HW_CYCLES(__usec__) \
 	( \
-		((uint64_t)(__usec__) * (uint64_t)sys_clock_hw_cycles_per_tick) / \
-		((uint64_t)sys_clock_us_per_tick) \
+		((u64_t)(__usec__) * (u64_t)sys_clock_hw_cycles_per_tick) / \
+		((u64_t)sys_clock_us_per_tick) \
 	)
 
 #define SEC_TO_HW_CYCLES(__sec__) \
-	USEC_TO_HW_CYCLES((uint64_t)(__sec__) * \
-	(uint64_t)USEC_PER_SEC)
+	USEC_TO_HW_CYCLES((u64_t)(__sec__) * \
+	(u64_t)USEC_PER_SEC)
 
 #define MSEC_TO_HW_CYCLES(__msec__) \
-		USEC_TO_HW_CYCLES((uint64_t)(__msec__) * \
-		(uint64_t)MSEC_PER_SEC)
+		USEC_TO_HW_CYCLES((u64_t)(__msec__) * \
+		(u64_t)MSEC_PER_SEC)
 
 struct zperf_udp_datagram {
-	int32_t id;
-	uint32_t tv_sec;
-	uint32_t tv_usec;
+	s32_t id;
+	u32_t tv_sec;
+	u32_t tv_usec;
 };
 
 struct zperf_server_hdr {
-	int32_t flags;
-	int32_t total_len1;
-	int32_t total_len2;
-	int32_t stop_sec;
-	int32_t stop_usec;
-	int32_t error_cnt;
-	int32_t outorder_cnt;
-	int32_t datagrams;
-	int32_t jitter1;
-	int32_t jitter2;
+	s32_t flags;
+	s32_t total_len1;
+	s32_t total_len2;
+	s32_t stop_sec;
+	s32_t stop_usec;
+	s32_t error_cnt;
+	s32_t outorder_cnt;
+	s32_t datagrams;
+	s32_t jitter1;
+	s32_t jitter2;
 };
 
-static inline uint32_t time_delta(uint32_t ts, uint32_t t)
+static inline u32_t time_delta(u32_t ts, u32_t t)
 {
 	return (t >= ts) ? (t - ts) : (ULONG_MAX - ts + t);
 }
diff --git a/samples/net/zperf/src/zperf_session.c b/samples/net/zperf/src/zperf_session.c
index 2d04b7f..a0a3715 100644
--- a/samples/net/zperf/src/zperf_session.c
+++ b/samples/net/zperf/src/zperf_session.c
@@ -22,7 +22,7 @@
 	struct in6_addr ipv6 = { };
 	struct in_addr ipv4 = { };
 	int i = 0;
-	uint16_t port;
+	u16_t port;
 
 	if (!pkt) {
 		printk("Error! null pkt detected.\n");
diff --git a/samples/net/zperf/src/zperf_session.h b/samples/net/zperf/src/zperf_session.h
index c1a0f6f..26c81b7 100644
--- a/samples/net/zperf/src/zperf_session.h
+++ b/samples/net/zperf/src/zperf_session.h
@@ -35,22 +35,22 @@
 
 struct session {
 	/* Tuple */
-	uint16_t port;
+	u16_t port;
 
 	struct net_addr ip;
 
 	enum state state;
 
 	/* Stat data */
-	uint32_t counter;
-	uint32_t next_id;
-	uint32_t outorder;
-	uint32_t error;
-	uint64_t length;
-	uint32_t start_time;
-	uint32_t last_time;
-	int32_t jitter;
-	int32_t last_transit_time;
+	u32_t counter;
+	u32_t next_id;
+	u32_t outorder;
+	u32_t error;
+	u64_t length;
+	u32_t start_time;
+	u32_t last_time;
+	s32_t jitter;
+	s32_t last_transit_time;
 
 	/* Stats packet*/
 	struct zperf_server_hdr stat;
diff --git a/samples/net/zperf/src/zperf_shell.c b/samples/net/zperf/src/zperf_shell.c
index 7d7d564..6c22f16 100644
--- a/samples/net/zperf/src/zperf_shell.c
+++ b/samples/net/zperf/src/zperf_shell.c
@@ -442,20 +442,20 @@
 	printk("[%s] Upload completed!\n", CMD_STR_UDP_UPLOAD);
 
 	if (results->time_in_us != 0) {
-		rate_in_kbps = (uint32_t)
-			(((uint64_t)results->nb_bytes_sent *
-			  (uint64_t)8 * (uint64_t)USEC_PER_SEC) /
-			 ((uint64_t)results->time_in_us * 1024));
+		rate_in_kbps = (u32_t)
+			(((u64_t)results->nb_bytes_sent *
+			  (u64_t)8 * (u64_t)USEC_PER_SEC) /
+			 ((u64_t)results->time_in_us * 1024));
 	} else {
 		rate_in_kbps = 0;
 	}
 
 	if (results->client_time_in_us != 0) {
-		client_rate_in_kbps = (uint32_t)
-			(((uint64_t)results->nb_packets_sent *
-			  (uint64_t)results->packet_size * (uint64_t)8 *
-			  (uint64_t)USEC_PER_SEC) /
-			 ((uint64_t)results->client_time_in_us * 1024));
+		client_rate_in_kbps = (u32_t)
+			(((u64_t)results->nb_packets_sent *
+			  (u64_t)results->packet_size * (u64_t)8 *
+			  (u64_t)USEC_PER_SEC) /
+			 ((u64_t)results->client_time_in_us * 1024));
 	} else {
 		client_rate_in_kbps = 0;
 	}
@@ -501,11 +501,11 @@
 	printk("[%s] Upload completed!\n", CMD_STR_TCP_UPLOAD);
 
 	if (results->client_time_in_us != 0) {
-		client_rate_in_kbps = (uint32_t)
-			(((uint64_t)results->nb_packets_sent *
-			  (uint64_t)results->packet_size * (uint64_t)8 *
-			  (uint64_t)USEC_PER_SEC) /
-			 ((uint64_t)results->client_time_in_us * 1024));
+		client_rate_in_kbps = (u32_t)
+			(((u64_t)results->nb_packets_sent *
+			  (u64_t)results->packet_size * (u64_t)8 *
+			  (u64_t)USEC_PER_SEC) /
+			 ((u64_t)results->client_time_in_us * 1024));
 	} else {
 		client_rate_in_kbps = 0;
 	}
@@ -741,7 +741,7 @@
 	struct net_context *context6 = NULL, *context4 = NULL;
 	sa_family_t family = AF_UNSPEC;
 	unsigned int duration_in_ms, packet_size, rate_in_kbps;
-	uint16_t port;
+	u16_t port;
 	bool is_udp;
 	int start = 0;
 
@@ -857,10 +857,10 @@
 static int shell_cmd_upload2(int argc, char *argv[])
 {
 	struct net_context *context6 = NULL, *context4 = NULL;
-	uint16_t port = DEF_PORT;
+	u16_t port = DEF_PORT;
 	unsigned int duration_in_ms, packet_size, rate_in_kbps;
 	sa_family_t family;
-	uint8_t is_udp;
+	u8_t is_udp;
 	int start = 0;
 
 	if (!strcmp(argv[0], "zperf")) {
diff --git a/samples/net/zperf/src/zperf_tcp_receiver.c b/samples/net/zperf/src/zperf_tcp_receiver.c
index d22c6bc..0efca5d 100644
--- a/samples/net/zperf/src/zperf_tcp_receiver.c
+++ b/samples/net/zperf/src/zperf_tcp_receiver.c
@@ -43,7 +43,7 @@
 			 void *user_data)
 {
 	struct session *session;
-	uint32_t time;
+	u32_t time;
 
 	if (!pkt) {
 		return;
@@ -73,19 +73,19 @@
 		}
 
 		if (!pkt && status == 0) { /* EOF */
-			uint32_t rate_in_kbps;
-			uint32_t duration = HW_CYCLES_TO_USEC(
+			u32_t rate_in_kbps;
+			u32_t duration = HW_CYCLES_TO_USEC(
 				time_delta(session->start_time, time));
 
 			session->state = STATE_COMPLETED;
 
 			/* Compute baud rate */
 			if (duration != 0) {
-				rate_in_kbps = (uint32_t)
-					(((uint64_t)session->length *
-					  (uint64_t)8 *
-					  (uint64_t)USEC_PER_SEC) /
-					 ((uint64_t)duration * 1024));
+				rate_in_kbps = (u32_t)
+					(((u64_t)session->length *
+					  (u64_t)8 *
+					  (u64_t)USEC_PER_SEC) /
+					 ((u64_t)duration * 1024));
 			} else {
 				rate_in_kbps = 0;
 			}
diff --git a/samples/net/zperf/src/zperf_tcp_uploader.c b/samples/net/zperf/src/zperf_tcp_uploader.c
index 56d544e..c47a49f 100644
--- a/samples/net/zperf/src/zperf_tcp_uploader.c
+++ b/samples/net/zperf/src/zperf_tcp_uploader.c
@@ -25,10 +25,10 @@
 		      unsigned int packet_size,
 		      struct zperf_results *results)
 {
-	uint32_t duration = MSEC_TO_HW_CYCLES(duration_in_ms);
-	uint32_t nb_packets = 0, nb_errors = 0;
-	uint32_t start_time, last_print_time, last_loop_time, end_time;
-	uint8_t time_elapsed = 0, finished = 0;
+	u32_t duration = MSEC_TO_HW_CYCLES(duration_in_ms);
+	u32_t nb_packets = 0, nb_errors = 0;
+	u32_t start_time, last_print_time, last_loop_time, end_time;
+	u8_t time_elapsed = 0, finished = 0;
 
 	if (packet_size > PACKET_SIZE_MAX) {
 		printk(TAG "WARNING! packet size too large! max size: %u\n",
@@ -48,7 +48,7 @@
 		int ret = 0;
 		struct net_pkt *pkt;
 		struct net_buf *frag;
-		uint32_t loop_time;
+		u32_t loop_time;
 		bool st;
 
 		/* Timestamps */
diff --git a/samples/net/zperf/src/zperf_udp_receiver.c b/samples/net/zperf/src/zperf_udp_receiver.c
index 9da45a8..c470634 100644
--- a/samples/net/zperf/src/zperf_udp_receiver.c
+++ b/samples/net/zperf/src/zperf_udp_receiver.c
@@ -128,10 +128,10 @@
 	struct net_buf *frag = pkt->frags;
 	struct zperf_udp_datagram hdr;
 	struct session *session;
-	uint16_t offset, pos;
-	int32_t transit_time;
-	uint32_t time;
-	int32_t id;
+	u16_t offset, pos;
+	s32_t transit_time;
+	u32_t time;
+	s32_t id;
 
 	if (!pkt) {
 		return;
@@ -152,7 +152,7 @@
 
 	offset = net_pkt_appdata(pkt) - net_pkt_ip_data(pkt);
 
-	frag = net_frag_read_be32(frag, offset, &pos, (uint32_t *)&hdr.id);
+	frag = net_frag_read_be32(frag, offset, &pos, (u32_t *)&hdr.id);
 	frag = net_frag_read_be32(frag, pos, &pos, &hdr.tv_sec);
 	frag = net_frag_read_be32(frag, pos, &pos, &hdr.tv_usec);
 
@@ -208,7 +208,7 @@
 				  hdr.tv_sec * USEC_PER_SEC +
 				  hdr.tv_usec);
 	if (session->last_transit_time != 0) {
-		int32_t delta_transit = transit_time -
+		s32_t delta_transit = transit_time -
 			session->last_transit_time;
 
 		delta_transit =
@@ -221,8 +221,8 @@
 
 	/* If necessary send statistics */
 	if (session->state == STATE_LAST_PACKET_RECEIVED) {
-		uint32_t rate_in_kbps;
-		uint32_t duration = HW_CYCLES_TO_USEC(
+		u32_t rate_in_kbps;
+		u32_t duration = HW_CYCLES_TO_USEC(
 			time_delta(session->start_time, time));
 
 		/* Update state machine */
@@ -230,10 +230,10 @@
 
 		/* Compute baud rate */
 		if (duration != 0) {
-			rate_in_kbps = (uint32_t)
-				(((uint64_t)session->length * (uint64_t)8 *
-				  (uint64_t)USEC_PER_SEC) /
-				 ((uint64_t)duration * 1024));
+			rate_in_kbps = (u32_t)
+				(((u64_t)session->length * (u64_t)8 *
+				  (u64_t)USEC_PER_SEC) /
+				 ((u64_t)duration * 1024));
 		} else {
 			rate_in_kbps = 0;
 
diff --git a/samples/net/zperf/src/zperf_udp_uploader.c b/samples/net/zperf/src/zperf_udp_uploader.c
index 336a816..8740452 100644
--- a/samples/net/zperf/src/zperf_udp_uploader.c
+++ b/samples/net/zperf/src/zperf_udp_uploader.c
@@ -24,8 +24,8 @@
 {
 	struct net_buf *frag = pkt->frags;
 	struct zperf_server_hdr hdr;
-	uint16_t offset;
-	uint16_t pos;
+	u16_t offset;
+	u16_t pos;
 
 	offset = net_pkt_udp_data(pkt) - net_pkt_ip_data(pkt);
 	offset += sizeof(struct net_udp_hdr) +
@@ -42,17 +42,17 @@
 		return;
 	}
 
-	frag = net_frag_read_be32(frag, offset, &pos, (uint32_t *)&hdr.flags);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.total_len1);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.total_len2);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.stop_sec);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.stop_usec);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.error_cnt);
+	frag = net_frag_read_be32(frag, offset, &pos, (u32_t *)&hdr.flags);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.total_len1);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.total_len2);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.stop_sec);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.stop_usec);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.error_cnt);
 	frag = net_frag_read_be32(frag, pos, &pos,
-				  (uint32_t *)&hdr.outorder_cnt);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.datagrams);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.jitter1);
-	frag = net_frag_read_be32(frag, pos, &pos, (uint32_t *)&hdr.jitter2);
+				  (u32_t *)&hdr.outorder_cnt);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.datagrams);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.jitter1);
+	frag = net_frag_read_be32(frag, pos, &pos, (u32_t *)&hdr.jitter2);
 
 	results->nb_packets_rcvd = hdr.datagrams;
 	results->nb_packets_lost = hdr.error_cnt;
@@ -73,9 +73,9 @@
 }
 
 static inline void zperf_upload_fin(struct net_context *context,
-				    uint32_t nb_packets,
-				    uint32_t end_time,
-				    uint32_t packet_size,
+				    u32_t nb_packets,
+				    u32_t end_time,
+				    u32_t packet_size,
 				    struct zperf_results *results)
 {
 	struct net_pkt *stat = NULL;
@@ -109,7 +109,7 @@
 					    USEC_PER_SEC);
 
 		status = net_pkt_append(pkt, sizeof(datagram),
-					(uint8_t *)&datagram, K_FOREVER);
+					(u8_t *)&datagram, K_FOREVER);
 		if (!status) {
 			printk(TAG "ERROR! Cannot append datagram data\n");
 			break;
@@ -119,12 +119,12 @@
 		if (packet_size > sizeof(struct zperf_udp_datagram)) {
 			int size = packet_size -
 				sizeof(struct zperf_udp_datagram);
-			uint16_t pos;
+			u16_t pos;
 
 			frag = net_pkt_write(pkt, net_buf_frag_last(pkt->frags),
 					     sizeof(struct zperf_udp_datagram),
 					     &pos, size,
-					     (uint8_t *)sample_packet,
+					     (u8_t *)sample_packet,
 					     K_FOREVER);
 		}
 
@@ -178,14 +178,14 @@
 		      unsigned int rate_in_kbps,
 		      struct zperf_results *results)
 {
-	uint32_t packet_duration = (uint32_t)(((uint64_t) packet_size *
+	u32_t packet_duration = (u32_t)(((u64_t) packet_size *
 					       SEC_TO_HW_CYCLES(1) * 8) /
-					      (uint64_t)(rate_in_kbps * 1024));
-	uint32_t duration = MSEC_TO_HW_CYCLES(duration_in_ms);
-	uint32_t print_interval = SEC_TO_HW_CYCLES(1);
-	uint32_t delay = packet_duration;
-	uint32_t nb_packets = 0;
-	uint32_t start_time, last_print_time, last_loop_time, end_time;
+					      (u64_t)(rate_in_kbps * 1024));
+	u32_t duration = MSEC_TO_HW_CYCLES(duration_in_ms);
+	u32_t print_interval = SEC_TO_HW_CYCLES(1);
+	u32_t delay = packet_duration;
+	u32_t nb_packets = 0;
+	u32_t start_time, last_print_time, last_loop_time, end_time;
 
 	if (packet_size > PACKET_SIZE_MAX) {
 		printk(TAG "WARNING! packet size too large! max size: %u\n",
@@ -208,8 +208,8 @@
 		struct zperf_udp_datagram datagram;
 		struct net_pkt *pkt;
 		struct net_buf *frag;
-		uint32_t loop_time;
-		int32_t adjust;
+		u32_t loop_time;
+		s32_t adjust;
 		bool status;
 		int ret;
 
@@ -255,7 +255,7 @@
 			htonl(HW_CYCLES_TO_USEC(loop_time) % USEC_PER_SEC);
 
 		status = net_pkt_append(pkt, sizeof(datagram),
-					(uint8_t *)&datagram, K_FOREVER);
+					(u8_t *)&datagram, K_FOREVER);
 		if (!status) {
 			printk(TAG "ERROR! Cannot append datagram data\n");
 			break;
@@ -265,7 +265,7 @@
 		if (packet_size > sizeof(struct zperf_udp_datagram)) {
 			int size = packet_size -
 				sizeof(struct zperf_udp_datagram);
-			uint16_t pos;
+			u16_t pos;
 
 			frag = net_pkt_write(pkt, net_buf_frag_last(pkt->frags),
 					     sizeof(struct zperf_udp_datagram),
diff --git a/subsys/net/buf.c b/subsys/net/buf.c
index 8d17030..e4fab0f 100644
--- a/subsys/net/buf.c
+++ b/subsys/net/buf.c
@@ -48,11 +48,11 @@
 #define BUF_SIZE(pool) (sizeof(struct net_buf) + \
 			ROUND_UP(pool->buf_size, 4) + \
 			ROUND_UP(pool->user_data_size, 4))
-#define UNINIT_BUF(pool, n) (struct net_buf *)(((uint8_t *)(pool->__bufs)) + \
+#define UNINIT_BUF(pool, n) (struct net_buf *)(((u8_t *)(pool->__bufs)) + \
 					       ((n) * BUF_SIZE(pool)))
 
 static inline struct net_buf *pool_get_uninit(struct net_buf_pool *pool,
-					      uint16_t uninit_count)
+					      u16_t uninit_count)
 {
 	struct net_buf *buf;
 
@@ -74,10 +74,10 @@
 }
 
 #if defined(CONFIG_NET_BUF_LOG)
-struct net_buf *net_buf_alloc_debug(struct net_buf_pool *pool, int32_t timeout,
+struct net_buf *net_buf_alloc_debug(struct net_buf_pool *pool, s32_t timeout,
 				    const char *func, int line)
 #else
-struct net_buf *net_buf_alloc(struct net_buf_pool *pool, int32_t timeout)
+struct net_buf *net_buf_alloc(struct net_buf_pool *pool, s32_t timeout)
 #endif
 {
 	struct net_buf *buf;
@@ -96,7 +96,7 @@
 	 * with the allocation one way or another.
 	 */
 	if (pool->uninit_count) {
-		uint16_t uninit_count;
+		u16_t uninit_count;
 
 		/* If this is not the first access to the pool, we can
 		 * be opportunistic and try to fetch a previously used
@@ -121,7 +121,7 @@
 
 #if defined(CONFIG_NET_BUF_LOG) && SYS_LOG_LEVEL >= SYS_LOG_LEVEL_WARNING
 	if (timeout == K_FOREVER) {
-		uint32_t ref = k_uptime_get_32();
+		u32_t ref = k_uptime_get_32();
 		buf = k_lifo_get(&pool->free, K_NO_WAIT);
 		while (!buf) {
 #if defined(CONFIG_NET_BUF_POOL_USAGE)
@@ -170,10 +170,10 @@
 }
 
 #if defined(CONFIG_NET_BUF_LOG)
-struct net_buf *net_buf_get_debug(struct k_fifo *fifo, int32_t timeout,
+struct net_buf *net_buf_get_debug(struct k_fifo *fifo, s32_t timeout,
 				  const char *func, int line)
 #else
-struct net_buf *net_buf_get(struct k_fifo *fifo, int32_t timeout)
+struct net_buf *net_buf_get(struct k_fifo *fifo, s32_t timeout)
 #endif
 {
 	struct net_buf *buf, *frag;
@@ -277,7 +277,7 @@
 	return buf;
 }
 
-struct net_buf *net_buf_clone(struct net_buf *buf, int32_t timeout)
+struct net_buf *net_buf_clone(struct net_buf *buf, s32_t timeout)
 {
 	struct net_buf *clone;
 
@@ -379,7 +379,7 @@
 
 void *net_buf_simple_add(struct net_buf_simple *buf, size_t len)
 {
-	uint8_t *tail = net_buf_simple_tail(buf);
+	u8_t *tail = net_buf_simple_tail(buf);
 
 	NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
 
@@ -397,9 +397,9 @@
 	return memcpy(net_buf_simple_add(buf, len), mem, len);
 }
 
-uint8_t *net_buf_simple_add_u8(struct net_buf_simple *buf, uint8_t val)
+u8_t *net_buf_simple_add_u8(struct net_buf_simple *buf, u8_t val)
 {
-	uint8_t *u8;
+	u8_t *u8;
 
 	NET_BUF_SIMPLE_DBG("buf %p val 0x%02x", buf, val);
 
@@ -409,7 +409,7 @@
 	return u8;
 }
 
-void net_buf_simple_add_le16(struct net_buf_simple *buf, uint16_t val)
+void net_buf_simple_add_le16(struct net_buf_simple *buf, u16_t val)
 {
 	NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
@@ -417,7 +417,7 @@
 	memcpy(net_buf_simple_add(buf, sizeof(val)), &val, sizeof(val));
 }
 
-void net_buf_simple_add_be16(struct net_buf_simple *buf, uint16_t val)
+void net_buf_simple_add_be16(struct net_buf_simple *buf, u16_t val)
 {
 	NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
@@ -425,7 +425,7 @@
 	memcpy(net_buf_simple_add(buf, sizeof(val)), &val, sizeof(val));
 }
 
-void net_buf_simple_add_le32(struct net_buf_simple *buf, uint32_t val)
+void net_buf_simple_add_le32(struct net_buf_simple *buf, u32_t val)
 {
 	NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
@@ -433,7 +433,7 @@
 	memcpy(net_buf_simple_add(buf, sizeof(val)), &val, sizeof(val));
 }
 
-void net_buf_simple_add_be32(struct net_buf_simple *buf, uint32_t val)
+void net_buf_simple_add_be32(struct net_buf_simple *buf, u32_t val)
 {
 	NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
@@ -452,7 +452,7 @@
 	return buf->data;
 }
 
-void net_buf_simple_push_le16(struct net_buf_simple *buf, uint16_t val)
+void net_buf_simple_push_le16(struct net_buf_simple *buf, u16_t val)
 {
 	NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
@@ -460,7 +460,7 @@
 	memcpy(net_buf_simple_push(buf, sizeof(val)), &val, sizeof(val));
 }
 
-void net_buf_simple_push_be16(struct net_buf_simple *buf, uint16_t val)
+void net_buf_simple_push_be16(struct net_buf_simple *buf, u16_t val)
 {
 	NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
 
@@ -468,9 +468,9 @@
 	memcpy(net_buf_simple_push(buf, sizeof(val)), &val, sizeof(val));
 }
 
-void net_buf_simple_push_u8(struct net_buf_simple *buf, uint8_t val)
+void net_buf_simple_push_u8(struct net_buf_simple *buf, u8_t val)
 {
-	uint8_t *data = net_buf_simple_push(buf, 1);
+	u8_t *data = net_buf_simple_push(buf, 1);
 
 	*data = val;
 }
@@ -485,9 +485,9 @@
 	return buf->data += len;
 }
 
-uint8_t net_buf_simple_pull_u8(struct net_buf_simple *buf)
+u8_t net_buf_simple_pull_u8(struct net_buf_simple *buf)
 {
-	uint8_t val;
+	u8_t val;
 
 	val = buf->data[0];
 	net_buf_simple_pull(buf, 1);
@@ -495,41 +495,41 @@
 	return val;
 }
 
-uint16_t net_buf_simple_pull_le16(struct net_buf_simple *buf)
+u16_t net_buf_simple_pull_le16(struct net_buf_simple *buf)
 {
-	uint16_t val;
+	u16_t val;
 
-	val = UNALIGNED_GET((uint16_t *)buf->data);
+	val = UNALIGNED_GET((u16_t *)buf->data);
 	net_buf_simple_pull(buf, sizeof(val));
 
 	return sys_le16_to_cpu(val);
 }
 
-uint16_t net_buf_simple_pull_be16(struct net_buf_simple *buf)
+u16_t net_buf_simple_pull_be16(struct net_buf_simple *buf)
 {
-	uint16_t val;
+	u16_t val;
 
-	val = UNALIGNED_GET((uint16_t *)buf->data);
+	val = UNALIGNED_GET((u16_t *)buf->data);
 	net_buf_simple_pull(buf, sizeof(val));
 
 	return sys_be16_to_cpu(val);
 }
 
-uint32_t net_buf_simple_pull_le32(struct net_buf_simple *buf)
+u32_t net_buf_simple_pull_le32(struct net_buf_simple *buf)
 {
-	uint32_t val;
+	u32_t val;
 
-	val = UNALIGNED_GET((uint32_t *)buf->data);
+	val = UNALIGNED_GET((u32_t *)buf->data);
 	net_buf_simple_pull(buf, sizeof(val));
 
 	return sys_le32_to_cpu(val);
 }
 
-uint32_t net_buf_simple_pull_be32(struct net_buf_simple *buf)
+u32_t net_buf_simple_pull_be32(struct net_buf_simple *buf)
 {
-	uint32_t val;
+	u32_t val;
 
-	val = UNALIGNED_GET((uint32_t *)buf->data);
+	val = UNALIGNED_GET((u32_t *)buf->data);
 	net_buf_simple_pull(buf, sizeof(val));
 
 	return sys_be32_to_cpu(val);
diff --git a/subsys/net/ip/6lo.c b/subsys/net/ip/6lo.c
index 732bb83..923c612 100644
--- a/subsys/net/ip/6lo.c
+++ b/subsys/net/ip/6lo.c
@@ -26,19 +26,19 @@
 struct net_6lo_context {
 	struct in6_addr prefix;
 	struct net_if *iface;
-	uint16_t lifetime;
-	uint8_t is_used		: 1;
-	uint8_t compress	: 1;
-	uint8_t cid		: 4;
-	uint8_t unused		: 2;
+	u16_t lifetime;
+	u8_t is_used		: 1;
+	u8_t compress	: 1;
+	u8_t cid		: 4;
+	u8_t unused		: 2;
 } __packed;
 
-static inline uint8_t get_6co_compress(struct net_icmpv6_nd_opt_6co *opt)
+static inline u8_t get_6co_compress(struct net_icmpv6_nd_opt_6co *opt)
 {
 	return (opt->flag & 0x10) >> 4;
 }
 
-static inline uint8_t get_6co_cid(struct net_icmpv6_nd_opt_6co *opt)
+static inline u8_t get_6co_cid(struct net_icmpv6_nd_opt_6co *opt)
 {
 	return opt->flag & 0x0F;
 }
@@ -87,7 +87,7 @@
 
 #if defined(CONFIG_NET_6LO_CONTEXT)
 /* RFC 6775, 4.2, 5.4.2, 5.4.3 and 7.2*/
-static inline void set_6lo_context(struct net_if *iface, uint8_t index,
+static inline void set_6lo_context(struct net_if *iface, u8_t index,
 				   struct net_icmpv6_nd_opt_6co *context)
 
 {
@@ -106,7 +106,7 @@
 			 struct net_icmpv6_nd_opt_6co *context)
 {
 	int unused = -1;
-	uint8_t i;
+	u8_t i;
 
 	/* If the context information already exists, update or remove
 	 * as per data.
@@ -142,9 +142,9 @@
 
 /* Get the context by matching cid */
 static inline struct net_6lo_context *
-get_6lo_context_by_cid(struct net_if *iface, uint8_t cid)
+get_6lo_context_by_cid(struct net_if *iface, u8_t cid)
 {
-	uint8_t i;
+	u8_t i;
 
 	for (i = 0; i < CONFIG_NET_MAX_6LO_CONTEXTS; i++) {
 		if (!ctx_6co[i].is_used) {
@@ -163,7 +163,7 @@
 static inline struct net_6lo_context *
 get_6lo_context_by_addr(struct net_if *iface, struct in6_addr *addr)
 {
-	uint8_t i;
+	u8_t i;
 
 	for (i = 0; i < CONFIG_NET_MAX_6LO_CONTEXTS; i++) {
 		if (!ctx_6co[i].is_used) {
@@ -195,11 +195,11 @@
  * IPv6 traffic class format is DSCP, ECN.
  * DSCP(6), ECN(2).
  */
-static inline uint8_t compress_tfl(struct net_ipv6_hdr *ipv6,
+static inline u8_t compress_tfl(struct net_ipv6_hdr *ipv6,
 				   struct net_buf *frag,
-				   uint8_t offset)
+				   u8_t offset)
 {
-	uint8_t tcl;
+	u8_t tcl;
 
 	tcl = ((ipv6->vtc & 0x0F) << 4) | ((ipv6->tcflow & 0xF0) >> 4);
 	tcl = (tcl << 6) | (tcl >> 2);   /* ECN(2), DSCP(6) */
@@ -246,9 +246,9 @@
 }
 
 /* Helper to compress Hop limit */
-static inline uint8_t compress_hoplimit(struct net_ipv6_hdr *ipv6,
+static inline u8_t compress_hoplimit(struct net_ipv6_hdr *ipv6,
 					struct net_buf *frag,
-					uint8_t offset)
+					u8_t offset)
 {
 	/* Hop Limit */
 	switch (ipv6->hop_limit) {
@@ -270,8 +270,8 @@
 }
 
 /* Helper to compress Next header */
-static inline uint8_t compress_nh(struct net_ipv6_hdr *ipv6,
-				  struct net_buf *frag, uint8_t offset)
+static inline u8_t compress_nh(struct net_ipv6_hdr *ipv6,
+				  struct net_buf *frag, u8_t offset)
 {
 	/* Next header */
 	if (ipv6->nexthdr == IPPROTO_UDP) {
@@ -284,10 +284,10 @@
 }
 
 /* Helpers to compress Source Address */
-static inline uint8_t compress_sa(struct net_ipv6_hdr *ipv6,
+static inline u8_t compress_sa(struct net_ipv6_hdr *ipv6,
 				  struct net_pkt *pkt,
 				  struct net_buf *frag,
-				  uint8_t offset)
+				  u8_t offset)
 {
 	if (net_is_ipv6_addr_unspecified(&ipv6->src)) {
 		NET_DBG("SAM_00, SAC_1 unspecified src address");
@@ -349,10 +349,10 @@
 }
 
 #if defined(CONFIG_NET_6LO_CONTEXT)
-static inline uint8_t compress_sa_ctx(struct net_ipv6_hdr *ipv6,
+static inline u8_t compress_sa_ctx(struct net_ipv6_hdr *ipv6,
 				      struct net_pkt *pkt,
 				      struct net_buf *frag,
-				      uint8_t offset,
+				      u8_t offset,
 				      struct net_6lo_context *src)
 {
 	if (!src) {
@@ -390,10 +390,10 @@
 #endif
 
 /* Helpers to compress Destination Address */
-static inline uint8_t compress_da_mcast(struct net_ipv6_hdr *ipv6,
+static inline u8_t compress_da_mcast(struct net_ipv6_hdr *ipv6,
 					struct net_pkt *pkt,
 					struct net_buf *frag,
-					uint8_t offset)
+					u8_t offset)
 {
 	IPHC[1] |= NET_6LO_IPHC_M_1;
 
@@ -441,10 +441,10 @@
 
 }
 
-static inline uint8_t compress_da(struct net_ipv6_hdr *ipv6,
+static inline u8_t compress_da(struct net_ipv6_hdr *ipv6,
 				  struct net_pkt *pkt,
 				  struct net_buf *frag,
-				  uint8_t offset)
+				  u8_t offset)
 {
 	/* If destination address is multicast */
 	if (net_is_ipv6_addr_mcast(&ipv6->dst)) {
@@ -499,10 +499,10 @@
 }
 
 #if defined(CONFIG_NET_6LO_CONTEXT)
-static inline uint8_t compress_da_ctx(struct net_ipv6_hdr *ipv6,
+static inline u8_t compress_da_ctx(struct net_ipv6_hdr *ipv6,
 				      struct net_pkt *pkt,
 				      struct net_buf *frag,
-				      uint8_t offset,
+				      u8_t offset,
 				      struct net_6lo_context *dst)
 {
 	if (!dst) {
@@ -542,10 +542,10 @@
 #endif
 
 /* Helper to compress Next header UDP */
-static inline uint8_t compress_nh_udp(struct net_udp_hdr *udp,
-				      struct net_buf *frag, uint8_t offset)
+static inline u8_t compress_nh_udp(struct net_udp_hdr *udp,
+				      struct net_buf *frag, u8_t offset)
 {
-	uint8_t tmp;
+	u8_t tmp;
 
 	/* 4.3.3 UDP LOWPAN_NHC Format
 	 *   0   1   2   3   4   5   6   7
@@ -576,10 +576,10 @@
 		IPHC[offset] |= NET_6LO_NHC_UDP_PORT_11;
 		offset++;
 
-		tmp = (uint8_t)(htons(udp->src_port));
+		tmp = (u8_t)(htons(udp->src_port));
 		tmp = tmp << 4;
 
-		tmp |= (((uint8_t)(htons(udp->dst_port))) & 0x0F);
+		tmp |= (((u8_t)(htons(udp->dst_port))) & 0x0F);
 		IPHC[offset++] = tmp;
 	} else if (((htons(udp->dst_port) >> 8) & 0xFF) ==
 		   NET_6LO_NHC_UDP_8_BIT_PORT) {
@@ -594,7 +594,7 @@
 		memcpy(&IPHC[offset], &udp->src_port, 2);
 		offset += 2;
 
-		IPHC[offset++] = (uint8_t)(htons(udp->dst_port));
+		IPHC[offset++] = (u8_t)(htons(udp->dst_port));
 	} else if (((htons(udp->src_port) >> 8) & 0xFF) ==
 		    NET_6LO_NHC_UDP_8_BIT_PORT) {
 
@@ -605,7 +605,7 @@
 		IPHC[offset] |= NET_6LO_NHC_UDP_PORT_10;
 		offset++;
 
-		IPHC[offset++] = (uint8_t)(htons(udp->src_port));
+		IPHC[offset++] = (u8_t)(htons(udp->src_port));
 
 		memcpy(&IPHC[offset], &udp->dst_port, 2);
 		offset += 2;
@@ -683,10 +683,10 @@
 	struct net_6lo_context *dst = NULL;
 #endif
 	struct net_ipv6_hdr *ipv6 = NET_IPV6_HDR(pkt);
-	uint8_t offset = 0;
+	u8_t offset = 0;
 	struct net_udp_hdr *udp;
 	struct net_buf *frag;
-	uint8_t compressed;
+	u8_t compressed;
 
 	if (pkt->frags->len < NET_IPV6H_LEN) {
 		NET_ERR("Invalid length %d, min %d",
@@ -783,11 +783,11 @@
 }
 
 /* Helper to uncompress Traffic class and Flow label */
-static inline uint8_t uncompress_tfl(struct net_pkt *pkt,
+static inline u8_t uncompress_tfl(struct net_pkt *pkt,
 				     struct net_ipv6_hdr *ipv6,
-				     uint8_t offset)
+				     u8_t offset)
 {
-	uint8_t tcl;
+	u8_t tcl;
 
 	/* Uncompress tcl and flow label */
 	switch (CIPHC[0] & NET_6LO_IPHC_TF_11) {
@@ -835,9 +835,9 @@
 }
 
 /* Helper to uncompress Hoplimit */
-static inline uint8_t uncompress_hoplimit(struct net_pkt *pkt,
+static inline u8_t uncompress_hoplimit(struct net_pkt *pkt,
 					  struct net_ipv6_hdr *ipv6,
-					  uint8_t offset)
+					  u8_t offset)
 {
 	switch (CIPHC[0] & NET_6LO_IPHC_HLIM255) {
 	case NET_6LO_IPHC_HLIM:
@@ -858,9 +858,9 @@
 }
 
 /* Helper to uncompress Source Address */
-static inline uint8_t uncompress_sa(struct net_pkt *pkt,
+static inline u8_t uncompress_sa(struct net_pkt *pkt,
 				    struct net_ipv6_hdr *ipv6,
-				    uint8_t offset)
+				    u8_t offset)
 {
 	if (CIPHC[1] & NET_6LO_IPHC_SAC_1) {
 		NET_DBG("SAC_1");
@@ -908,9 +908,9 @@
 }
 
 #if defined(CONFIG_NET_6LO_CONTEXT)
-static inline uint8_t uncompress_sa_ctx(struct net_pkt *pkt,
+static inline u8_t uncompress_sa_ctx(struct net_pkt *pkt,
 					struct net_ipv6_hdr *ipv6,
-					uint8_t offset,
+					u8_t offset,
 					struct net_6lo_context *ctx)
 {
 	if (!ctx) {
@@ -965,9 +965,9 @@
 #endif
 
 /* Helpers to uncompress Destination Address */
-static inline uint8_t uncompress_da_mcast(struct net_pkt *pkt,
+static inline u8_t uncompress_da_mcast(struct net_pkt *pkt,
 					  struct net_ipv6_hdr *ipv6,
-					  uint8_t offset)
+					  u8_t offset)
 {
 	NET_DBG("Dst is multicast");
 
@@ -1023,9 +1023,9 @@
 }
 
 /* Helper to uncompress Destination Address */
-static inline uint8_t uncompress_da(struct net_pkt *pkt,
+static inline u8_t uncompress_da(struct net_pkt *pkt,
 				    struct net_ipv6_hdr *ipv6,
-				    uint8_t offset)
+				    u8_t offset)
 {
 	if (CIPHC[1] & NET_6LO_IPHC_M_1) {
 		return uncompress_da_mcast(pkt, ipv6, offset);
@@ -1076,9 +1076,9 @@
 }
 
 #if defined(CONFIG_NET_6LO_CONTEXT)
-static inline uint8_t uncompress_da_ctx(struct net_pkt *pkt,
+static inline u8_t uncompress_da_ctx(struct net_pkt *pkt,
 					struct net_ipv6_hdr *ipv6,
-					uint8_t offset,
+					u8_t offset,
 					struct net_6lo_context *ctx)
 {
 	if (!ctx) {
@@ -1145,9 +1145,9 @@
 #endif
 
 /* Helper to uncompress NH UDP */
-static inline uint8_t uncompress_nh_udp(struct net_pkt *pkt,
+static inline u8_t uncompress_nh_udp(struct net_pkt *pkt,
 					struct net_udp_hdr *udp,
-					uint8_t offset)
+					u8_t offset)
 {
 	/* Port uncompression
 	 * 00:  All 16 bits for src and dst are inlined
@@ -1173,14 +1173,14 @@
 		memcpy(&udp->src_port, &CIPHC[offset], 2);
 		offset += 2;
 
-		udp->dst_port = htons(((uint16_t)NET_6LO_NHC_UDP_8_BIT_PORT
+		udp->dst_port = htons(((u16_t)NET_6LO_NHC_UDP_8_BIT_PORT
 				       << 8) | CIPHC[offset]);
 		offset++;
 		break;
 	case NET_6LO_NHC_UDP_PORT_10:
 		NET_DBG("src 8 bits, dst full inlined");
 
-		udp->src_port = htons(((uint16_t)NET_6LO_NHC_UDP_8_BIT_PORT
+		udp->src_port = htons(((u16_t)NET_6LO_NHC_UDP_8_BIT_PORT
 				       << 8) | CIPHC[offset]);
 		offset++;
 
@@ -1208,7 +1208,7 @@
 				  struct net_6lo_context **src,
 				  struct net_6lo_context **dst)
 {
-	uint8_t cid;
+	u8_t cid;
 
 	/* Extract source and destination Context Index,
 	 * Either src or dest address is context based or both.
@@ -1241,11 +1241,11 @@
 static inline bool uncompress_IPHC_header(struct net_pkt *pkt)
 {
 	struct net_udp_hdr *udp = NULL;
-	uint8_t offset = 2;
-	uint8_t chksum = 0;
+	u8_t offset = 2;
+	u8_t chksum = 0;
 	struct net_ipv6_hdr *ipv6;
 	struct net_buf *frag;
-	uint16_t len;
+	u16_t len;
 #if defined(CONFIG_NET_6LO_CONTEXT)
 	struct net_6lo_context *src = NULL;
 	struct net_6lo_context *dst = NULL;
@@ -1362,7 +1362,7 @@
 	/* Set IPv6 header and UDP (if next header is) length */
 	len = net_pkt_get_len(pkt) - NET_IPV6H_LEN;
 	ipv6->len[0] = len >> 8;
-	ipv6->len[1] = (uint8_t)len;
+	ipv6->len[1] = (u8_t)len;
 
 	if (ipv6->nexthdr == IPPROTO_UDP && udp) {
 		udp->len = htons(len);
diff --git a/subsys/net/ip/connection.c b/subsys/net/ip/connection.c
index 57f3307..8f9154f 100644
--- a/subsys/net/ip/connection.c
+++ b/subsys/net/ip/connection.c
@@ -68,12 +68,12 @@
  *   31       protocol
  */
 struct conn_hash {
-	uint32_t value;
-	int32_t idx;
+	u32_t value;
+	s32_t idx;
 };
 
 struct conn_hash_neg {
-	uint32_t value;
+	u32_t value;
 };
 
 /** Connection cache */
@@ -87,8 +87,8 @@
 #define TAKE_BIT(val, bit, max, used)				\
 	(((val & BIT(bit)) >> bit) << (max - used))
 
-static inline uint8_t ports_to_hash(uint16_t remote_port,
-				    uint16_t local_port)
+static inline u8_t ports_to_hash(u16_t remote_port,
+				    u16_t local_port)
 {
 	/* Note that we do not convert port value to network byte order */
 	return (remote_port & BIT(0)) |
@@ -101,7 +101,7 @@
 		  ((local_port & BIT(15)) >> 12)) << 4);
 }
 
-static inline uint16_t ipv6_to_hash(struct in6_addr *addr)
+static inline u16_t ipv6_to_hash(struct in6_addr *addr)
 {
 	/* There is 11 bits available for IPv6 address */
 	/* Use more bits from the lower part of address space */
@@ -126,7 +126,7 @@
 		TAKE_BIT(UNALIGNED_GET(&addr->s6_addr32[3]), 0, 11, 11);
 }
 
-static inline uint16_t ipv4_to_hash(struct in_addr *addr)
+static inline u16_t ipv4_to_hash(struct in_addr *addr)
 {
 	/* There is 11 bits available for IPv4 address */
 	/* Use more bits from the lower part of address space */
@@ -147,16 +147,16 @@
 /* Return either the first free position in the cache (idx < 0) or
  * the existing cached position (idx >= 0)
  */
-static int32_t check_hash(enum net_ip_protocol proto,
+static s32_t check_hash(enum net_ip_protocol proto,
 			  sa_family_t family,
 			  void *remote_addr,
 			  void *local_addr,
-			  uint16_t remote_port,
-			  uint16_t local_port,
-			  uint32_t *cache_value)
+			  u16_t remote_port,
+			  u16_t local_port,
+			  u32_t *cache_value)
 {
 	int i, free_pos = -1;
-	uint32_t value = 0;
+	u32_t value = 0;
 
 	value = ports_to_hash(remote_port, local_port);
 
@@ -208,10 +208,10 @@
 	return -ENOENT;
 }
 
-static inline int32_t get_conn(enum net_ip_protocol proto,
+static inline s32_t get_conn(enum net_ip_protocol proto,
 			       sa_family_t family,
 			       struct net_pkt *pkt,
-			       uint32_t *cache_value)
+			       u32_t *cache_value)
 {
 #if defined(CONFIG_NET_IPV4)
 	if (family == AF_INET) {
@@ -238,7 +238,7 @@
 	return -1;
 }
 
-static inline void cache_add_neg(uint32_t cache_value)
+static inline void cache_add_neg(u32_t cache_value)
 {
 	int i;
 
@@ -254,7 +254,7 @@
 	}
 }
 
-static inline bool cache_check_neg(uint32_t cache_value)
+static inline bool cache_check_neg(u32_t cache_value)
 {
 	int i;
 
@@ -281,8 +281,8 @@
 
 static inline enum net_verdict cache_check(enum net_ip_protocol proto,
 					   struct net_pkt *pkt,
-					   uint32_t *cache_value,
-					   int32_t *pos)
+					   u32_t *cache_value,
+					   s32_t *pos)
 {
 	*pos = get_conn(proto, net_pkt_family(pkt), pkt, cache_value);
 	if (*pos >= 0) {
@@ -415,14 +415,14 @@
 int net_conn_register(enum net_ip_protocol proto,
 		      const struct sockaddr *remote_addr,
 		      const struct sockaddr *local_addr,
-		      uint16_t remote_port,
-		      uint16_t local_port,
+		      u16_t remote_port,
+		      u16_t local_port,
 		      net_conn_cb_t cb,
 		      void *user_data,
 		      struct net_conn_handle **handle)
 {
 	int i;
-	uint8_t rank = 0;
+	u8_t rank = 0;
 
 	for (i = 0; i < CONFIG_NET_MAX_CONN; i++) {
 		if (conns[i].flags & NET_CONN_IN_USE) {
@@ -629,12 +629,12 @@
 enum net_verdict net_conn_input(enum net_ip_protocol proto, struct net_pkt *pkt)
 {
 	int i, best_match = -1;
-	int16_t best_rank = -1;
+	s16_t best_rank = -1;
 
 #if defined(CONFIG_NET_CONN_CACHE)
 	enum net_verdict verdict;
-	uint32_t cache_value = 0;
-	int32_t pos;
+	u32_t cache_value = 0;
+	s32_t pos;
 
 	verdict = cache_check(proto, pkt, &cache_value, &pos);
 	if (verdict != NET_CONTINUE) {
@@ -643,7 +643,7 @@
 #endif
 
 	if (IS_ENABLED(CONFIG_NET_DEBUG_CONN)) {
-		uint16_t chksum;
+		u16_t chksum;
 
 		if (proto == IPPROTO_TCP) {
 			chksum = NET_TCP_HDR(pkt)->chksum;
diff --git a/subsys/net/ip/connection.h b/subsys/net/ip/connection.h
index 4675b62..266b1dc 100644
--- a/subsys/net/ip/connection.h
+++ b/subsys/net/ip/connection.h
@@ -58,10 +58,10 @@
 	void *user_data;
 
 	/** Connection protocol */
-	uint8_t proto;
+	u8_t proto;
 
 	/** Flags for the connection */
-	uint8_t flags;
+	u8_t flags;
 
 	/** Rank of this connection. Higher rank means more specific
 	 * connection.
@@ -73,7 +73,7 @@
 	 *   bit 4  local address, bit set if specific address
 	 *   bit 5  remote address, bit set if specific address
 	 */
-	uint8_t rank;
+	u8_t rank;
 };
 
 /**
@@ -94,8 +94,8 @@
 int net_conn_register(enum net_ip_protocol proto,
 		      const struct sockaddr *remote_addr,
 		      const struct sockaddr *local_addr,
-		      uint16_t remote_port,
-		      uint16_t local_port,
+		      u16_t remote_port,
+		      u16_t local_port,
 		      net_conn_cb_t cb,
 		      void *user_data,
 		      struct net_conn_handle **handle);
diff --git a/subsys/net/ip/dhcpv4.c b/subsys/net/ip/dhcpv4.c
index ceaa40c..567b44d 100644
--- a/subsys/net/ip/dhcpv4.c
+++ b/subsys/net/ip/dhcpv4.c
@@ -27,24 +27,24 @@
 #include <net/dhcpv4.h>
 
 struct dhcp_msg {
-	uint8_t op;		/* Message type, 1:BOOTREQUEST, 2:BOOTREPLY */
-	uint8_t htype;		/* Hardware Address Type */
-	uint8_t hlen;		/* Hardware Address length */
-	uint8_t hops;		/* used by relay agents when booting via relay
+	u8_t op;		/* Message type, 1:BOOTREQUEST, 2:BOOTREPLY */
+	u8_t htype;		/* Hardware Address Type */
+	u8_t hlen;		/* Hardware Address length */
+	u8_t hops;		/* used by relay agents when booting via relay
 				 * agent, client sets zero
 				 */
-	uint32_t xid;		/* Transaction ID, random number */
-	uint16_t secs;		/* Seconds elapsed since client began address
+	u32_t xid;		/* Transaction ID, random number */
+	u16_t secs;		/* Seconds elapsed since client began address
 				 * acquisition or renewal process
 				 */
-	uint16_t flags;		/* Broadcast or Unicast */
-	uint8_t ciaddr[4];	/* Client IP Address */
-	uint8_t yiaddr[4];	/* your (client) IP address */
-	uint8_t siaddr[4];	/* IP address of next server to use in bootstrap
+	u16_t flags;		/* Broadcast or Unicast */
+	u8_t ciaddr[4];	/* Client IP Address */
+	u8_t yiaddr[4];	/* your (client) IP address */
+	u8_t siaddr[4];	/* IP address of next server to use in bootstrap
 				 * returned in DHCPOFFER, DHCPACK by server
 				 */
-	uint8_t giaddr[4];	/* Relat agent IP address */
-	uint8_t chaddr[16];	/* Client hardware address */
+	u8_t giaddr[4];	/* Relat agent IP address */
+	u8_t chaddr[16];	/* Client hardware address */
 } __packed;
 
 #define SIZE_OF_SNAME	64
@@ -113,7 +113,7 @@
 #define DHCPV4_INITIAL_DELAY_MAX 10
 
 /* RFC 1497 [17] */
-static const uint8_t magic_cookie[4] = { 0x63, 0x82, 0x53, 0x63 };
+static const u8_t magic_cookie[4] = { 0x63, 0x82, 0x53, 0x63 };
 
 static void dhcpv4_timeout(struct k_work *work);
 
@@ -162,8 +162,8 @@
 }
 
 /* Add a an option with the form OPTION LENGTH VALUE.  */
-static bool add_option_length_value(struct net_pkt *pkt, uint8_t option,
-				    uint8_t size, const uint8_t *value)
+static bool add_option_length_value(struct net_pkt *pkt, u8_t option,
+				    u8_t size, const u8_t *value)
 {
 	if (!net_pkt_append_u8(pkt, option)) {
 		return false;
@@ -181,7 +181,7 @@
 }
 
 /* Add DHCPv4 message type */
-static bool add_msg_type(struct net_pkt *pkt, uint8_t type)
+static bool add_msg_type(struct net_pkt *pkt, u8_t type)
 {
 	return add_option_length_value(pkt, DHCPV4_OPTIONS_MSG_TYPE, 1, &type);
 }
@@ -191,7 +191,7 @@
  */
 static bool add_req_options(struct net_pkt *pkt)
 {
-	static const uint8_t data[5] = { DHCPV4_OPTIONS_REQ_LIST,
+	static const u8_t data[5] = { DHCPV4_OPTIONS_REQ_LIST,
 					 3, /* Length */
 					 DHCPV4_OPTIONS_SUBNET_MASK,
 					 DHCPV4_OPTIONS_ROUTER,
@@ -221,7 +221,7 @@
 /* File is empty ATM */
 static inline bool add_file(struct net_pkt *pkt)
 {
-	uint8_t len = SIZE_OF_FILE;
+	u8_t len = SIZE_OF_FILE;
 
 	while (len-- > 0) {
 		if (!net_pkt_append_u8(pkt, 0)) {
@@ -235,7 +235,7 @@
 /* SNAME is empty ATM */
 static inline bool add_sname(struct net_pkt *pkt)
 {
-	uint8_t len = SIZE_OF_SNAME;
+	u8_t len = SIZE_OF_SNAME;
 
 	while (len-- > 0) {
 		if (!net_pkt_append_u8(pkt, 0)) {
@@ -251,7 +251,7 @@
 {
 	struct net_ipv4_hdr *ipv4;
 	struct net_udp_hdr *udp;
-	uint16_t len;
+	u16_t len;
 
 	ipv4 = NET_IPV4_HDR(pkt);
 	udp = NET_UDP_HDR(pkt);
@@ -265,7 +265,7 @@
 	ipv4->ttl = 0xFF;
 	ipv4->proto = IPPROTO_UDP;
 	ipv4->len[0] = len >> 8;
-	ipv4->len[1] = (uint8_t)len;
+	ipv4->len[1] = (u8_t)len;
 	ipv4->chksum = ~net_calc_chksum_ipv4(pkt);
 
 	net_ipaddr_copy(&ipv4->dst, server_addr);
@@ -280,7 +280,7 @@
 }
 
 /* Prepare initial DHCPv4 message and add options as per message type */
-static struct net_pkt *prepare_message(struct net_if *iface, uint8_t type,
+static struct net_pkt *prepare_message(struct net_if *iface, u8_t type,
 				       const struct in_addr *ciaddr)
 {
 	struct net_pkt *pkt;
@@ -346,7 +346,7 @@
 static void send_request(struct net_if *iface)
 {
 	struct net_pkt *pkt;
-	uint32_t timeout;
+	u32_t timeout;
 	const struct in_addr *server_addr = net_ipv4_broadcast_address();
 	const struct in_addr *ciaddr = NULL;
 	bool with_server_id = false;
@@ -450,7 +450,7 @@
 static void send_discover(struct net_if *iface)
 {
 	struct net_pkt *pkt;
-	uint32_t timeout;
+	u32_t timeout;
 
 	iface->dhcpv4.xid++;
 
@@ -576,8 +576,8 @@
 
 static void enter_bound(struct net_if *iface)
 {
-	uint32_t renewal_time;
-	uint32_t rebinding_time;
+	u32_t renewal_time;
+	u32_t rebinding_time;
 
 	k_delayed_work_cancel(&iface->dhcpv4.timer);
 
@@ -664,16 +664,16 @@
  */
 static enum net_verdict parse_options(struct net_if *iface,
 				      struct net_buf *frag,
-				      uint16_t offset,
+				      u16_t offset,
 				      enum dhcpv4_msg_type *msg_type)
 {
-	uint8_t cookie[4];
-	uint8_t length;
-	uint8_t type;
-	uint16_t pos;
+	u8_t cookie[4];
+	u8_t length;
+	u8_t type;
+	u16_t pos;
 
 	frag = net_frag_read(frag, offset, &pos, sizeof(magic_cookie),
-			     (uint8_t *)cookie);
+			     (u8_t *)cookie);
 	if (!frag || memcmp(magic_cookie, cookie, sizeof(magic_cookie))) {
 
 		NET_DBG("Incorrect magic cookie");
@@ -797,7 +797,7 @@
 				net_sprint_ipv4_addr(&iface->dhcpv4.server_id));
 			break;
 		case DHCPV4_OPTIONS_MSG_TYPE: {
-			uint8_t v;
+			u8_t v;
 
 			if (length != 1) {
 				NET_DBG("options_msg_type, bad length");
@@ -925,8 +925,8 @@
 	struct net_buf *frag;
 	struct net_if *iface;
 	enum dhcpv4_msg_type msg_type = 0;
-	uint8_t min;
-	uint16_t pos;
+	u8_t min;
+	u16_t pos;
 
 	if (!conn) {
 		NET_DBG("Invalid connection");
@@ -1006,8 +1006,8 @@
 
 void net_dhcpv4_start(struct net_if *iface)
 {
-	uint32_t timeout;
-	uint32_t entropy;
+	u32_t timeout;
+	u32_t entropy;
 
 	switch (iface->dhcpv4.state) {
 	case NET_DHCPV4_DISABLED:
diff --git a/subsys/net/ip/icmpv4.c b/subsys/net/ip/icmpv4.c
index bc24fe6..487ffcb 100644
--- a/subsys/net/ip/icmpv4.c
+++ b/subsys/net/ip/icmpv4.c
@@ -71,9 +71,9 @@
 
 #define NET_ICMPV4_UNUSED_LEN 4
 
-static inline void setup_ipv4_header(struct net_pkt *pkt, uint8_t extra_len,
-				     uint8_t ttl, uint8_t icmp_type,
-				     uint8_t icmp_code)
+static inline void setup_ipv4_header(struct net_pkt *pkt, u8_t extra_len,
+				     u8_t ttl, u8_t icmp_type,
+				     u8_t icmp_code)
 {
 	NET_IPV4_HDR(pkt)->vhl = 0x45;
 	NET_IPV4_HDR(pkt)->tos = 0x00;
@@ -100,8 +100,8 @@
 
 int net_icmpv4_send_echo_request(struct net_if *iface,
 				 struct in_addr *dst,
-				 uint16_t identifier,
-				 uint16_t sequence)
+				 u16_t identifier,
+				 u16_t sequence)
 {
 	const struct in_addr *src;
 	struct net_pkt *pkt;
@@ -164,7 +164,7 @@
 	return -EIO;
 }
 
-int net_icmpv4_send_error(struct net_pkt *orig, uint8_t type, uint8_t code)
+int net_icmpv4_send_error(struct net_pkt *orig, u8_t type, u8_t code)
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
@@ -281,7 +281,7 @@
 }
 
 enum net_verdict net_icmpv4_input(struct net_pkt *pkt,
-				  uint8_t type, uint8_t code)
+				  u8_t type, u8_t code)
 {
 	struct net_icmpv4_handler *cb;
 
diff --git a/subsys/net/ip/icmpv4.h b/subsys/net/ip/icmpv4.h
index 37208dc..102df26 100644
--- a/subsys/net/ip/icmpv4.h
+++ b/subsys/net/ip/icmpv4.h
@@ -26,8 +26,8 @@
 #define NET_ICMPV4_DST_UNREACH_NO_PORT   3 /* Port unreachable */
 
 struct net_icmpv4_echo_req {
-	uint16_t identifier;
-	uint16_t sequence;
+	u16_t identifier;
+	u16_t sequence;
 } __packed;
 
 #define NET_ICMPV4_ECHO_REQ(pkt)					\
@@ -38,8 +38,8 @@
 
 struct net_icmpv4_handler {
 	sys_snode_t node;
-	uint8_t type;
-	uint8_t code;
+	u8_t type;
+	u8_t code;
 	icmpv4_callback_handler_t handler;
 };
 
@@ -50,7 +50,7 @@
  * @param code Code of the type of the error message.
  * @return Return 0 if the sending succeed, <0 otherwise.
  */
-int net_icmpv4_send_error(struct net_pkt *pkt, uint8_t type, uint8_t code);
+int net_icmpv4_send_error(struct net_pkt *pkt, u8_t type, u8_t code);
 
 /**
  * @brief Send ICMPv4 echo request message.
@@ -66,15 +66,15 @@
  */
 int net_icmpv4_send_echo_request(struct net_if *iface,
 				 struct in_addr *dst,
-				 uint16_t identifier,
-				 uint16_t sequence);
+				 u16_t identifier,
+				 u16_t sequence);
 
 void net_icmpv4_register_handler(struct net_icmpv4_handler *handler);
 
 void net_icmpv4_unregister_handler(struct net_icmpv4_handler *handler);
 
 enum net_verdict net_icmpv4_input(struct net_pkt *pkt,
-				  uint8_t type, uint8_t code);
+				  u8_t type, u8_t code);
 
 #if defined(CONFIG_NET_IPV4)
 void net_icmpv4_init(void);
diff --git a/subsys/net/ip/icmpv6.c b/subsys/net/ip/icmpv6.c
index ba22e27..845c132 100644
--- a/subsys/net/ip/icmpv6.c
+++ b/subsys/net/ip/icmpv6.c
@@ -74,9 +74,9 @@
 	sys_slist_find_and_remove(&handlers, &handler->node);
 }
 
-static inline void setup_ipv6_header(struct net_pkt *pkt, uint16_t extra_len,
-				     uint8_t hop_limit, uint8_t icmp_type,
-				     uint8_t icmp_code)
+static inline void setup_ipv6_header(struct net_pkt *pkt, u16_t extra_len,
+				     u8_t hop_limit, u8_t icmp_type,
+				     u8_t icmp_code)
 {
 	NET_IPV6_HDR(pkt)->vtc = 0x60;
 	NET_IPV6_HDR(pkt)->tcflow = 0;
@@ -129,7 +129,7 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct net_if *iface;
-	uint16_t payload_len;
+	u16_t payload_len;
 
 	echo_request_debug(orig);
 
@@ -189,7 +189,7 @@
 
 	if (NET_IPV6_HDR(pkt)->nexthdr == NET_IPV6_NEXTHDR_HBHO) {
 #if defined(CONFIG_NET_RPL)
-		uint16_t offset = NET_IPV6H_LEN;
+		u16_t offset = NET_IPV6H_LEN;
 
 		if (net_rpl_revert_header(pkt, offset, &offset) < 0) {
 			/* TODO: Handle error cases */
@@ -229,8 +229,8 @@
 	return NET_DROP;
 }
 
-int net_icmpv6_send_error(struct net_pkt *orig, uint8_t type, uint8_t code,
-			  uint32_t param)
+int net_icmpv6_send_error(struct net_pkt *orig, u8_t type, u8_t code,
+			  u32_t param)
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
@@ -354,8 +354,8 @@
 
 int net_icmpv6_send_echo_request(struct net_if *iface,
 				 struct in6_addr *dst,
-				 uint16_t identifier,
-				 uint16_t sequence)
+				 u16_t identifier,
+				 u16_t sequence)
 {
 	const struct in6_addr *src;
 	struct net_pkt *pkt;
@@ -411,7 +411,7 @@
 }
 
 enum net_verdict net_icmpv6_input(struct net_pkt *pkt,
-				  uint8_t type, uint8_t code)
+				  u8_t type, u8_t code)
 {
 	struct net_icmpv6_handler *cb;
 
diff --git a/subsys/net/ip/icmpv6.h b/subsys/net/ip/icmpv6.h
index 2e6c304..9e7659f 100644
--- a/subsys/net/ip/icmpv6.h
+++ b/subsys/net/ip/icmpv6.h
@@ -20,58 +20,58 @@
 #include <net/net_pkt.h>
 
 struct net_icmpv6_ns_hdr {
-	uint32_t reserved;
+	u32_t reserved;
 	struct in6_addr tgt;
 } __packed;
 
 struct net_icmpv6_nd_opt_hdr {
-	uint8_t type;
-	uint8_t len;
+	u8_t type;
+	u8_t len;
 } __packed;
 
 struct net_icmpv6_na_hdr {
-	uint8_t flags;
-	uint8_t reserved[3];
+	u8_t flags;
+	u8_t reserved[3];
 	struct in6_addr tgt;
 } __packed;
 
 struct net_icmpv6_rs_hdr {
-	uint32_t reserved;
+	u32_t reserved;
 } __packed;
 
 struct net_icmpv6_ra_hdr {
-	uint8_t cur_hop_limit;
-	uint8_t flags;
-	uint16_t router_lifetime;
-	uint32_t reachable_time;
-	uint32_t retrans_timer;
+	u8_t cur_hop_limit;
+	u8_t flags;
+	u16_t router_lifetime;
+	u32_t reachable_time;
+	u32_t retrans_timer;
 } __packed;
 
 struct net_icmpv6_nd_opt_mtu {
-	uint8_t type;
-	uint8_t len;
-	uint16_t reserved;
-	uint32_t mtu;
+	u8_t type;
+	u8_t len;
+	u16_t reserved;
+	u32_t mtu;
 } __packed;
 
 struct net_icmpv6_nd_opt_prefix_info {
-	uint8_t type;
-	uint8_t len;
-	uint8_t prefix_len;
-	uint8_t flags;
-	uint32_t valid_lifetime;
-	uint32_t preferred_lifetime;
-	uint32_t reserved;
+	u8_t type;
+	u8_t len;
+	u8_t prefix_len;
+	u8_t flags;
+	u32_t valid_lifetime;
+	u32_t preferred_lifetime;
+	u32_t reserved;
 	struct in6_addr prefix;
 } __packed;
 
 struct net_icmpv6_nd_opt_6co {
-	uint8_t type;
-	uint8_t len;
-	uint8_t context_len;
-	uint8_t flag; /*res:3,c:1,cid:4 */
-	uint16_t reserved;
-	uint16_t lifetime;
+	u8_t type;
+	u8_t len;
+	u8_t context_len;
+	u8_t flag; /*res:3,c:1,cid:4 */
+	u16_t reserved;
+	u16_t lifetime;
 	struct in6_addr prefix;
 } __packed;
 
@@ -154,8 +154,8 @@
 
 struct net_icmpv6_handler {
 	sys_snode_t node;
-	uint8_t type;
-	uint8_t code;
+	u8_t type;
+	u8_t code;
 	icmpv6_callback_handler_t handler;
 };
 
@@ -169,8 +169,8 @@
  * what value to use.
  * @return Return 0 if the sending succeed, <0 otherwise.
  */
-int net_icmpv6_send_error(struct net_pkt *pkt, uint8_t type, uint8_t code,
-			  uint32_t param);
+int net_icmpv6_send_error(struct net_pkt *pkt, u8_t type, u8_t code,
+			  u32_t param);
 
 /**
  * @brief Send ICMPv6 echo request message.
@@ -186,13 +186,13 @@
  */
 int net_icmpv6_send_echo_request(struct net_if *iface,
 				 struct in6_addr *dst,
-				 uint16_t identifier,
-				 uint16_t sequence);
+				 u16_t identifier,
+				 u16_t sequence);
 
 void net_icmpv6_register_handler(struct net_icmpv6_handler *handler);
 void net_icmpv6_unregister_handler(struct net_icmpv6_handler *handler);
 enum net_verdict net_icmpv6_input(struct net_pkt *pkt,
-				  uint8_t type, uint8_t code);
+				  u8_t type, u8_t code);
 #if defined(CONFIG_NET_IPV6)
 void net_icmpv6_init(void);
 #else
diff --git a/subsys/net/ip/ipv4.c b/subsys/net/ip/ipv4.c
index 47f4cd8..2ca17a1 100644
--- a/subsys/net/ip/ipv4.c
+++ b/subsys/net/ip/ipv4.c
@@ -28,7 +28,7 @@
 				    const struct in_addr *src,
 				    const struct in_addr *dst,
 				    struct net_if *iface,
-				    uint8_t next_header)
+				    u8_t next_header)
 {
 	struct net_buf *header;
 
@@ -80,7 +80,7 @@
 				   net_context_get_ip_proto(context));
 }
 
-int net_ipv4_finalize_raw(struct net_pkt *pkt, uint8_t next_header)
+int net_ipv4_finalize_raw(struct net_pkt *pkt, u8_t next_header)
 {
 	/* Set the length of the IPv4 header */
 	size_t total_len;
diff --git a/subsys/net/ip/ipv4.h b/subsys/net/ip/ipv4.h
index ce298f5..615a069 100644
--- a/subsys/net/ip/ipv4.h
+++ b/subsys/net/ip/ipv4.h
@@ -37,7 +37,7 @@
 				    const struct in_addr *src,
 				    const struct in_addr *dst,
 				    struct net_if *iface,
-				    uint8_t next_header);
+				    u8_t next_header);
 
 /**
  * @brief Create IPv4 packet in provided net_pkt.
@@ -65,7 +65,7 @@
  *
  * @return Return 0 on Success, < 0 on Failure.
  */
-int net_ipv4_finalize_raw(struct net_pkt *pkt, uint8_t next_header);
+int net_ipv4_finalize_raw(struct net_pkt *pkt, u8_t next_header);
 
 /**
  * @brief Finalize IPv4 packet. It should be called right before
diff --git a/subsys/net/ip/ipv6.c b/subsys/net/ip/ipv6.c
index f66b27e..3c8eab0 100644
--- a/subsys/net/ip/ipv6.c
+++ b/subsys/net/ip/ipv6.c
@@ -118,7 +118,7 @@
 	for (i = 0; i < CONFIG_NET_IPV6_MAX_NEIGHBORS; i++) {
 		struct net_nbr *nbr = get_nbr(i);
 
-		if (nbr->data == (uint8_t *)data) {
+		if (nbr->data == (u8_t *)data) {
 			return nbr;
 		}
 	}
@@ -194,7 +194,7 @@
 	return NULL;
 }
 
-struct net_ipv6_nbr_data *net_ipv6_get_nbr_by_index(uint8_t idx)
+struct net_ipv6_nbr_data *net_ipv6_get_nbr_by_index(u8_t idx)
 {
 	struct net_nbr *nbr = get_nbr(idx);
 
@@ -334,7 +334,7 @@
 		out);
 }
 
-static inline void dbg_update_neighbor_lladdr_raw(uint8_t *new_lladdr,
+static inline void dbg_update_neighbor_lladdr_raw(u8_t *new_lladdr,
 				struct net_linkaddr_storage *old_lladdr,
 				struct in6_addr *addr)
 {
@@ -471,7 +471,7 @@
 }
 
 struct in6_addr *net_ipv6_nbr_lookup_by_index(struct net_if *iface,
-					      uint8_t idx)
+					      u8_t idx)
 {
 	int i;
 
@@ -504,10 +504,10 @@
 	struct net_ipv6_hdr *hdr = NET_IPV6_HDR(pkt);
 	struct net_buf *frag = pkt->frags;
 	int pos = 6; /* Initial value if no extension fragments were found */
-	uint16_t offset;
-	uint8_t next_hdr;
-	uint8_t length;
-	uint8_t next;
+	u16_t offset;
+	u8_t next_hdr;
+	u8_t length;
+	u8_t next;
 
 	offset = sizeof(struct net_ipv6_hdr);
 	next = hdr->nexthdr;
@@ -573,7 +573,7 @@
 				    const struct in6_addr *src,
 				    const struct in6_addr *dst,
 				    struct net_if *iface,
-				    uint8_t next_header)
+				    u8_t next_header)
 {
 	struct net_buf *header;
 
@@ -632,7 +632,7 @@
 				   net_context_get_ip_proto(context));
 }
 
-int net_ipv6_finalize_raw(struct net_pkt *pkt, uint8_t next_header)
+int net_ipv6_finalize_raw(struct net_pkt *pkt, u8_t next_header)
 {
 	/* Set the length of the IPv6 header */
 	size_t total_len;
@@ -718,7 +718,7 @@
 	/* We need to go through all the fragments and adjust the
 	 * fragment data size.
 	 */
-	uint16_t reserve, room_len, copy_len, pos;
+	u16_t reserve, room_len, copy_len, pos;
 	struct net_buf *orig_frag, *frag;
 
 	/* No need to do anything if we are forwarding the packet
@@ -968,7 +968,7 @@
 	return nbr_lookup(&net_neighbor.table, iface, addr);
 }
 
-struct net_nbr *net_ipv6_get_nbr(struct net_if *iface, uint8_t idx)
+struct net_nbr *net_ipv6_get_nbr(struct net_if *iface, u8_t idx)
 {
 	int i;
 
@@ -993,7 +993,7 @@
 	return NULL;
 }
 
-static inline uint8_t get_llao_len(struct net_if *iface)
+static inline u8_t get_llao_len(struct net_if *iface)
 {
 	if (iface->link_addr.len == 6) {
 		return 8;
@@ -1009,7 +1009,7 @@
 }
 
 static inline void set_llao(struct net_linkaddr *lladdr,
-			    uint8_t *llao, uint8_t llao_len, uint8_t type)
+			    u8_t *llao, u8_t llao_len, u8_t type)
 {
 	llao[NET_ICMPV6_OPT_TYPE_OFFSET] = type;
 	llao[NET_ICMPV6_OPT_LEN_OFFSET] = llao_len >> 3;
@@ -1020,8 +1020,8 @@
 	       llao_len - lladdr->len - 2);
 }
 
-static void setup_headers(struct net_pkt *pkt, uint8_t nd6_len,
-			  uint8_t icmp_type)
+static void setup_headers(struct net_pkt *pkt, u8_t nd6_len,
+			  u8_t icmp_type)
 {
 	NET_IPV6_HDR(pkt)->vtc = 0x60;
 	NET_IPV6_HDR(pkt)->tcflow = 0;
@@ -1041,7 +1041,7 @@
 {
 	struct net_linkaddr lladdr = {
 		.len = 8 * hdr->len - 2,
-		.addr = (uint8_t *)hdr + 2,
+		.addr = (u8_t *)hdr + 2,
 	};
 
 	/**
@@ -1058,11 +1058,11 @@
 
 int net_ipv6_send_na(struct net_if *iface, struct in6_addr *src,
 		     struct in6_addr *dst, struct in6_addr *tgt,
-		     uint8_t flags)
+		     u8_t flags)
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint8_t llao_len;
+	u8_t llao_len;
 
 	pkt = net_pkt_get_reserve_tx(net_if_get_ll_reserve(iface, dst),
 				      K_FOREVER);
@@ -1127,10 +1127,10 @@
 
 static enum net_verdict handle_ns_input(struct net_pkt *pkt)
 {
-	uint16_t total_len = net_pkt_get_len(pkt);
+	u16_t total_len = net_pkt_get_len(pkt);
 	struct net_icmpv6_nd_opt_hdr *hdr;
 	struct net_if_addr *ifaddr;
-	uint8_t flags = 0, prev_opt_len = 0;
+	u8_t flags = 0, prev_opt_len = 0;
 	int ret;
 	size_t left_len;
 
@@ -1161,7 +1161,7 @@
 	/* The parsing gets tricky if the ND struct is split
 	 * between two fragments. FIXME later.
 	 */
-	if (pkt->frags->len < ((uint8_t *)hdr - pkt->frags->data)) {
+	if (pkt->frags->len < ((u8_t *)hdr - pkt->frags->data)) {
 		NET_DBG("NS struct split between fragments");
 		goto drop;
 	}
@@ -1387,7 +1387,7 @@
 
 void net_ipv6_nbr_set_reachable_timer(struct net_if *iface, struct net_nbr *nbr)
 {
-	uint32_t time;
+	u32_t time;
 
 	time = net_if_ipv6_get_reachable_time(iface);
 
@@ -1403,7 +1403,7 @@
 #if defined(CONFIG_NET_IPV6_NBR_CACHE)
 static inline bool handle_na_neighbor(struct net_pkt *pkt,
 				      struct net_icmpv6_nd_opt_hdr *hdr,
-				      uint8_t *tllao)
+				      u8_t *tllao)
 {
 	bool lladdr_changed = false;
 	struct net_nbr *nbr;
@@ -1572,11 +1572,11 @@
 
 static enum net_verdict handle_na_input(struct net_pkt *pkt)
 {
-	uint16_t total_len = net_pkt_get_len(pkt);
+	u16_t total_len = net_pkt_get_len(pkt);
 	struct net_icmpv6_nd_opt_hdr *hdr;
 	struct net_if_addr *ifaddr;
-	uint8_t *tllao = NULL;
-	uint8_t prev_opt_len = 0;
+	u8_t *tllao = NULL;
+	u8_t prev_opt_len = 0;
 	size_t left_len;
 
 	dbg_addr_recv_tgt("Neighbor Advertisement",
@@ -1604,7 +1604,7 @@
 	/* The parsing gets tricky if the ND struct is split
 	 * between two fragments. FIXME later.
 	 */
-	if (pkt->frags->len < ((uint8_t *)hdr - pkt->frags->data)) {
+	if (pkt->frags->len < ((u8_t *)hdr - pkt->frags->data)) {
 		NET_DBG("NA struct split between fragments");
 		goto drop;
 	}
@@ -1621,7 +1621,7 @@
 
 		switch (hdr->type) {
 		case NET_ICMPV6_ND_OPT_TLLAO:
-			tllao = (uint8_t *)hdr;
+			tllao = (u8_t *)hdr;
 			break;
 
 		default:
@@ -1686,7 +1686,7 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct net_nbr *nbr;
-	uint8_t llao_len;
+	u8_t llao_len;
 
 	pkt = net_pkt_get_reserve_tx(net_if_get_ll_reserve(iface, dst),
 				      K_FOREVER);
@@ -1828,7 +1828,7 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	bool unspec_src;
-	uint8_t llao_len = 0;
+	u8_t llao_len = 0;
 
 	pkt = net_pkt_get_reserve_tx(net_if_get_ll_reserve(iface, NULL),
 				      K_FOREVER);
@@ -1903,14 +1903,14 @@
 
 static inline struct net_buf *handle_ra_neighbor(struct net_pkt *pkt,
 						 struct net_buf *frag,
-						 uint8_t len,
-						 uint16_t offset, uint16_t *pos,
+						 u8_t len,
+						 u16_t offset, u16_t *pos,
 						 struct net_nbr **nbr)
 
 {
 	struct net_linkaddr lladdr;
 	struct net_linkaddr_storage llstorage;
-	uint8_t padding;
+	u8_t padding;
 
 	if (!nbr) {
 		return NULL;
@@ -2011,7 +2011,7 @@
 
 #define TWO_HOURS (2 * 60 * 60)
 
-static inline uint32_t remaining(struct k_delayed_work *work)
+static inline u32_t remaining(struct k_delayed_work *work)
 {
 	return k_delayed_work_remaining_get(work) / MSEC_PER_SEC;
 }
@@ -2073,8 +2073,8 @@
 
 static inline struct net_buf *handle_ra_prefix(struct net_pkt *pkt,
 					       struct net_buf *frag,
-					       uint8_t len,
-					       uint16_t offset, uint16_t *pos)
+					       u8_t len,
+					       u16_t offset, u16_t *pos)
 {
 	struct net_icmpv6_nd_opt_prefix_info prefix_info;
 
@@ -2115,8 +2115,8 @@
 /* 6lowpan Context Option RFC 6775, 4.2 */
 static inline struct net_buf *handle_ra_6co(struct net_pkt *pkt,
 					    struct net_buf *frag,
-					    uint8_t len,
-					    uint16_t offset, uint16_t *pos)
+					    u8_t len,
+					    u16_t offset, u16_t *pos)
 {
 	struct net_icmpv6_nd_opt_6co context;
 
@@ -2179,18 +2179,18 @@
 
 static enum net_verdict handle_ra_input(struct net_pkt *pkt)
 {
-	uint16_t total_len = net_pkt_get_len(pkt);
+	u16_t total_len = net_pkt_get_len(pkt);
 	struct net_nbr *nbr = NULL;
 	struct net_if_router *router;
 	struct net_buf *frag;
-	uint16_t router_lifetime;
-	uint32_t reachable_time;
-	uint32_t retrans_timer;
-	uint8_t hop_limit;
-	uint16_t offset;
-	uint8_t length;
-	uint8_t type;
-	uint32_t mtu;
+	u16_t router_lifetime;
+	u32_t reachable_time;
+	u32_t retrans_timer;
+	u8_t hop_limit;
+	u16_t offset;
+	u8_t length;
+	u8_t type;
+	u32_t mtu;
 
 	dbg_addr_recv("Router Advertisement",
 		      &NET_IPV6_HDR(pkt)->src,
@@ -2382,8 +2382,8 @@
 
 static struct net_pkt *create_mldv2(struct net_pkt *pkt,
 				    const struct in6_addr *addr,
-				    uint16_t record_type,
-				    uint8_t num_sources)
+				    u16_t record_type,
+				    u8_t num_sources)
 {
 	net_pkt_append_u8(pkt, record_type);
 	net_pkt_append_u8(pkt, 0); /* aux data len */
@@ -2405,7 +2405,7 @@
 {
 	struct net_pkt *pkt;
 	struct in6_addr dst;
-	uint16_t pos;
+	u16_t pos;
 	int ret;
 
 	/* Sent to all MLDv2-capable routers */
@@ -2480,7 +2480,7 @@
 }
 
 static int send_mldv2(struct net_if *iface, const struct in6_addr *addr,
-		      uint8_t mode)
+		      u8_t mode)
 {
 	struct net_pkt *pkt;
 	int ret;
@@ -2570,7 +2570,7 @@
 	}
 
 	if (count > 0) {
-		uint16_t pos;
+		u16_t pos;
 
 		/* Write back the record count */
 		net_pkt_write_u8(pkt, pkt->frags, 0, &pos, count);
@@ -2585,10 +2585,10 @@
 
 static enum net_verdict handle_mld_query(struct net_pkt *pkt)
 {
-	uint16_t total_len = net_pkt_get_len(pkt);
+	u16_t total_len = net_pkt_get_len(pkt);
 	struct in6_addr mcast;
-	uint16_t max_rsp_code, num_src, pkt_len;
-	uint16_t offset, pos;
+	u16_t max_rsp_code, num_src, pkt_len;
+	u16_t offset, pos;
 	struct net_buf *frag;
 
 	dbg_addr_recv("Multicast Listener Query",
@@ -2687,7 +2687,7 @@
 	},
 };
 
-static struct net_ipv6_reassembly *reassembly_get(uint32_t id,
+static struct net_ipv6_reassembly *reassembly_get(u32_t id,
 						  struct in6_addr *src,
 						  struct in6_addr *dst)
 {
@@ -2726,14 +2726,14 @@
 	return &reassembly[avail];
 }
 
-static bool reassembly_cancel(uint32_t id,
+static bool reassembly_cancel(u32_t id,
 			      struct in6_addr *src,
 			      struct in6_addr *dst)
 {
 	int i, j;
 
 	for (i = 0; i < CONFIG_NET_IPV6_FRAGMENT_MAX_COUNT; i++) {
-		int32_t remaining;
+		s32_t remaining;
 
 		if (!k_work_pending(&reassembly[i].timer.work) ||
 		    reassembly[i].id != id ||
@@ -2801,9 +2801,9 @@
 {
 	struct net_pkt *pkt;
 	struct net_buf *last;
-	uint8_t next_hdr;
+	u8_t next_hdr;
 	int i, len;
-	uint16_t pos;
+	u16_t pos;
 
 	k_delayed_work_cancel(&reass->timer);
 
@@ -2925,7 +2925,7 @@
  */
 static bool fragment_verify(struct net_ipv6_reassembly *reass)
 {
-	uint16_t offset;
+	u16_t offset;
 	int i, prev_len;
 
 	prev_len = net_pkt_get_len(reass->pkt[0]);
@@ -2957,15 +2957,15 @@
 static enum net_verdict handle_fragment_hdr(struct net_pkt *pkt,
 					    struct net_buf *frag,
 					    int total_len,
-					    uint16_t buf_offset)
+					    u16_t buf_offset)
 {
 	struct net_ipv6_reassembly *reass;
-	uint32_t id;
-	uint16_t loc;
-	uint16_t offset;
-	uint16_t flag;
-	uint8_t nexthdr;
-	uint8_t more;
+	u32_t id;
+	u16_t loc;
+	u16_t offset;
+	u16_t flag;
+	u8_t nexthdr;
+	u8_t more;
 	bool found;
 	int i;
 
@@ -3090,16 +3090,16 @@
 			      struct net_buf *orig,
 			      struct net_buf *prev,
 			      struct net_buf *frag,
-			      uint16_t ipv6_len,
-			      uint16_t offset,
+			      u16_t ipv6_len,
+			      u16_t offset,
 			      int len,
 			      bool final)
 {
 	struct net_pkt *ipv6;
 	struct net_buf *rest = NULL, *end = NULL, *orig_copy = NULL;
 	struct net_ipv6_frag_hdr hdr;
-	uint16_t pos, ext_len;
-	uint8_t prev_hdr;
+	u16_t pos, ext_len;
+	u8_t prev_hdr;
 	int ret;
 
 	/* Prepare the pkt so that the IPv6 packet will be sent properly
@@ -3196,7 +3196,7 @@
 			 NET_IPV6_NEXTHDR_FRAG);
 
 	/* Then just add the fragmentation header. */
-	ret = net_pkt_append(ipv6, sizeof(hdr), (uint8_t *)&hdr,
+	ret = net_pkt_append(ipv6, sizeof(hdr), (u8_t *)&hdr,
 			     FRAG_BUF_WAIT);
 	if (!ret) {
 		ret = -ENOMEM;
@@ -3247,15 +3247,15 @@
 }
 
 int net_ipv6_send_fragmented_pkt(struct net_if *iface, struct net_pkt *pkt,
-				 uint16_t pkt_len)
+				 u16_t pkt_len)
 {
 	struct net_buf *frag = pkt->frags;
 	struct net_buf *prev = NULL;
 	struct net_buf *orig_ipv6, *rest;
 	int curr_len = 0;
 	int status = false;
-	uint16_t ipv6_len = 0, offset = 0;
-	uint32_t id = sys_rand32_get();
+	u16_t ipv6_len = 0, offset = 0;
+	u32_t id = sys_rand32_get();
 	int ret;
 
 	/* Split the first fragment that contains the IPv6 header into
@@ -3341,8 +3341,8 @@
 }
 
 static inline struct net_pkt *check_unknown_option(struct net_pkt *pkt,
-						   uint8_t opt_type,
-						   uint16_t length)
+						   u8_t opt_type,
+						   u16_t length)
 {
 	/* RFC 2460 chapter 4.2 tells how to handle the unknown
 	 * options by the two highest order bits of the option:
@@ -3373,7 +3373,7 @@
 	case 0x80:
 		net_icmpv6_send_error(pkt, NET_ICMPV6_PARAM_PROBLEM,
 				      NET_ICMPV6_PARAM_PROB_OPTION,
-				      (uint32_t)length);
+				      (u32_t)length);
 		return NULL;
 	}
 
@@ -3383,13 +3383,13 @@
 static inline struct net_buf *handle_ext_hdr_options(struct net_pkt *pkt,
 						     struct net_buf *frag,
 						     int total_len,
-						     uint16_t len,
-						     uint16_t offset,
-						     uint16_t *pos,
+						     u16_t len,
+						     u16_t offset,
+						     u16_t *pos,
 						     enum net_verdict *verdict)
 {
-	uint8_t opt_type, opt_len;
-	uint16_t length = 0, loc;
+	u8_t opt_type, opt_len;
+	u16_t length = 0, loc;
 #if defined(CONFIG_NET_RPL)
 	bool result;
 #endif
@@ -3479,7 +3479,7 @@
 	return NULL;
 }
 
-static inline bool is_upper_layer_protocol_header(uint8_t proto)
+static inline bool is_upper_layer_protocol_header(u8_t proto)
 {
 	return (proto == IPPROTO_ICMPV6 || proto == IPPROTO_UDP ||
 		proto == IPPROTO_TCP);
@@ -3491,11 +3491,11 @@
 	int real_len = net_pkt_get_len(pkt);
 	int pkt_len = (hdr->len[0] << 8) + hdr->len[1] + sizeof(*hdr);
 	struct net_buf *frag;
-	uint8_t start_of_ext, prev_hdr;
-	uint8_t next, next_hdr, length;
-	uint8_t first_option;
-	uint16_t offset, total_len = 0;
-	uint8_t ext_bitmap;
+	u8_t start_of_ext, prev_hdr;
+	u8_t next, next_hdr, length;
+	u8_t first_option;
+	u16_t offset, total_len = 0;
+	u8_t ext_bitmap;
 
 	if (real_len != pkt_len) {
 		NET_DBG("IPv6 packet size %d pkt len %d", pkt_len, real_len);
diff --git a/subsys/net/ip/ipv6.h b/subsys/net/ip/ipv6.h
index 4a6079a..4e26d05 100644
--- a/subsys/net/ip/ipv6.h
+++ b/subsys/net/ip/ipv6.h
@@ -95,10 +95,10 @@
 	enum net_ipv6_nbr_state state;
 
 	/** Link metric for the neighbor */
-	uint16_t link_metric;
+	u16_t link_metric;
 
 	/** How many times we have sent NS */
-	uint8_t ns_count;
+	u8_t ns_count;
 
 	/** Is the neighbor a router */
 	bool is_router;
@@ -116,7 +116,7 @@
  *
  * @return Return IPv6 neighbor information.
  */
-struct net_ipv6_nbr_data *net_ipv6_get_nbr_by_index(uint8_t idx);
+struct net_ipv6_nbr_data *net_ipv6_get_nbr_by_index(u8_t idx);
 
 #if defined(CONFIG_NET_IPV6_DAD)
 int net_ipv6_start_dad(struct net_if *iface, struct net_if_addr *ifaddr);
@@ -131,7 +131,7 @@
 
 int net_ipv6_send_na(struct net_if *iface, struct in6_addr *src,
 		     struct in6_addr *dst, struct in6_addr *tgt,
-		     uint8_t flags);
+		     u8_t flags);
 
 /**
  * @brief Create IPv6 packet in provided net_pkt.
@@ -148,7 +148,7 @@
 				    const struct in6_addr *src,
 				    const struct in6_addr *dst,
 				    struct net_if *iface,
-				    uint8_t next_header);
+				    u8_t next_header);
 
 /**
  * @brief Create IPv6 packet in provided net_pkt.
@@ -176,7 +176,7 @@
  *
  * @return Return 0 on Success, < 0 on Failure.
  */
-int net_ipv6_finalize_raw(struct net_pkt *pkt, uint8_t next_header);
+int net_ipv6_finalize_raw(struct net_pkt *pkt, u8_t next_header);
 
 /**
  * @brief Finalize IPv6 packet. It should be called right before
@@ -260,7 +260,7 @@
  *
  * @return A valid pointer on a neighbor on success, NULL otherwise
  */
-struct net_nbr *net_ipv6_get_nbr(struct net_if *iface, uint8_t idx);
+struct net_nbr *net_ipv6_get_nbr(struct net_if *iface, u8_t idx);
 
 /**
  * @brief Look for a neighbor from it's link local address index
@@ -272,7 +272,7 @@
  * @return A valid pointer on a neighbor on success, NULL otherwise
  */
 struct in6_addr *net_ipv6_nbr_lookup_by_index(struct net_if *iface,
-					      uint8_t idx);
+					      u8_t idx);
 
 /**
  * @brief Add a neighbor to neighbor cache
@@ -327,7 +327,7 @@
 
 static inline
 struct in6_addr *net_ipv6_nbr_lookup_by_index(struct net_if *iface,
-					      uint8_t idx)
+					      u8_t idx)
 {
 	return NULL;
 }
@@ -394,7 +394,7 @@
 	struct net_pkt *pkt[NET_IPV6_FRAGMENTS_MAX_PKT];
 
 	/** IPv6 fragment identification */
-	uint32_t id;
+	u32_t id;
 };
 
 /**
diff --git a/subsys/net/ip/l2/arp.c b/subsys/net/ip/l2/arp.c
index 65c373e..940501d 100644
--- a/subsys/net/ip/l2/arp.c
+++ b/subsys/net/ip/l2/arp.c
@@ -22,7 +22,7 @@
 #include "net_private.h"
 
 struct arp_entry {
-	uint32_t time;	/* FIXME - implement timeout functionality */
+	u32_t time;	/* FIXME - implement timeout functionality */
 	struct net_if *iface;
 	struct net_pkt *pending;
 	struct in_addr ip;
@@ -44,7 +44,7 @@
 
 		NET_DBG("[%d] iface %p dst %s ll %s pending %p", i, iface,
 			net_sprint_ipv4_addr(&arp_table[i].ip),
-			net_sprint_ll_addr((uint8_t *)&arp_table[i].eth.addr,
+			net_sprint_ll_addr((u8_t *)&arp_table[i].eth.addr,
 					   sizeof(struct net_eth_addr)),
 			arp_table[i].pending);
 
@@ -56,7 +56,7 @@
 			if (arp_table[i].pending) {
 				NET_DBG("ARP already pending to %s ll %s",
 					net_sprint_ipv4_addr(dst),
-					net_sprint_ll_addr((uint8_t *)
+					net_sprint_ll_addr((u8_t *)
 						&arp_table[i].eth.addr,
 						sizeof(struct net_eth_addr)));
 				*free_entry = NULL;
@@ -337,7 +337,7 @@
 
 		NET_DBG("[%d] iface %p dst %s ll %s pending %p", i, iface,
 			net_sprint_ipv4_addr(&arp_table[i].ip),
-			net_sprint_ll_addr((uint8_t *)&arp_table[i].eth.addr,
+			net_sprint_ll_addr((u8_t *)&arp_table[i].eth.addr,
 					   sizeof(struct net_eth_addr)),
 			arp_table[i].pending);
 
@@ -357,7 +357,7 @@
 			net_pkt_ll_dst(arp_table[i].pending)->len =
 				sizeof(struct net_eth_addr);
 			net_pkt_ll_dst(arp_table[i].pending)->addr =
-				(uint8_t *)
+				(u8_t *)
 				&NET_ETH_HDR(arp_table[i].pending)->dst.addr;
 
 			send_pending(iface, &arp_table[i].pending);
@@ -457,7 +457,7 @@
 			NET_DBG("ARP request from %s [%s] for %s",
 				out,
 				net_sprint_ll_addr(
-					(uint8_t *)&arp_hdr->src_hwaddr,
+					(u8_t *)&arp_hdr->src_hwaddr,
 					arp_hdr->hwlen),
 				net_sprint_ipv4_addr(&arp_hdr->dst_ipaddr));
 		} while (0);
diff --git a/subsys/net/ip/l2/bluetooth.c b/subsys/net/ip/l2/bluetooth.c
index 083cb82..8e2714d 100644
--- a/subsys/net/ip/l2/bluetooth.c
+++ b/subsys/net/ip/l2/bluetooth.c
@@ -83,7 +83,7 @@
 	return NET_OK;
 }
 
-static inline uint16_t net_bt_reserve(struct net_if *iface, void *unused)
+static inline u16_t net_bt_reserve(struct net_if *iface, void *unused)
 {
 	ARG_UNUSED(iface);
 	ARG_UNUSED(unused);
@@ -280,7 +280,7 @@
 
 #if defined(CONFIG_NET_L2_BLUETOOTH_MGMT)
 
-static int bt_connect(uint32_t mgmt_request, struct net_if *iface, void *data,
+static int bt_connect(u32_t mgmt_request, struct net_if *iface, void *data,
 		      size_t len)
 {
 	struct bt_context *ctxt = net_if_get_device(iface)->driver_data;
@@ -307,7 +307,7 @@
 	return 0;
 }
 
-static bool eir_found(uint8_t type, const uint8_t *data, uint8_t data_len,
+static bool eir_found(u8_t type, const u8_t *data, u8_t data_len,
 		      void *user_data)
 {
 	int i;
@@ -319,13 +319,13 @@
 		return false;
 	}
 
-	if (data_len % sizeof(uint16_t) != 0) {
+	if (data_len % sizeof(u16_t) != 0) {
 		NET_ERR("AD malformed\n");
 		return false;
 	}
 
-	for (i = 0; i < data_len; i += sizeof(uint16_t)) {
-		uint16_t u16;
+	for (i = 0; i < data_len; i += sizeof(u16_t)) {
+		u16_t u16;
 
 		memcpy(&u16, &data[i], sizeof(u16));
 		if (sys_le16_to_cpu(u16) != BT_UUID_IPSS_VAL) {
@@ -348,13 +348,13 @@
 }
 
 static bool ad_parse(struct net_buf_simple *ad,
-		     bool (*func)(uint8_t type, const uint8_t *data,
-				  uint8_t data_len, void *user_data),
+		     bool (*func)(u8_t type, const u8_t *data,
+				  u8_t data_len, void *user_data),
 		     void *user_data)
 {
 	while (ad->len > 1) {
-		uint8_t len = net_buf_simple_pull_u8(ad);
-		uint8_t type;
+		u8_t len = net_buf_simple_pull_u8(ad);
+		u8_t type;
 
 		/* Check for early termination */
 		if (len == 0) {
@@ -378,7 +378,7 @@
 	return false;
 }
 
-static void device_found(const bt_addr_le_t *addr, int8_t rssi, uint8_t type,
+static void device_found(const bt_addr_le_t *addr, s8_t rssi, u8_t type,
 			 struct net_buf_simple *ad)
 {
 	/* We're only interested in connectable events */
@@ -417,7 +417,7 @@
 	}
 }
 
-static int bt_scan(uint32_t mgmt_request, struct net_if *iface, void *data,
+static int bt_scan(u32_t mgmt_request, struct net_if *iface, void *data,
 		   size_t len)
 {
 	if (!strcmp(data, "on") || !strcmp(data, "active")) {
@@ -433,7 +433,7 @@
 	return 0;
 }
 
-static int bt_disconnect(uint32_t mgmt_request, struct net_if *iface,
+static int bt_disconnect(u32_t mgmt_request, struct net_if *iface,
 			 void *data, size_t len)
 {
 	struct bt_context *ctxt = net_if_get_device(iface)->driver_data;
@@ -452,7 +452,7 @@
 	return bt_l2cap_chan_disconnect(&ctxt->ipsp_chan.chan);
 }
 
-static void connected(struct bt_conn *conn, uint8_t err)
+static void connected(struct bt_conn *conn, u8_t err)
 {
 	if (err) {
 #if defined(CONFIG_NET_DEBUG_L2_BLUETOOTH)
@@ -473,7 +473,7 @@
 			      L2CAP_IPSP_PSM);
 }
 
-static void disconnected(struct bt_conn *conn, uint8_t reason)
+static void disconnected(struct bt_conn *conn, u8_t reason)
 {
 #if defined(CONFIG_NET_DEBUG_L2_BLUETOOTH)
 	char addr[BT_ADDR_LE_STR_LEN];
diff --git a/subsys/net/ip/l2/bluetooth_shell.c b/subsys/net/ip/l2/bluetooth_shell.c
index df9debf..949684f 100644
--- a/subsys/net/ip/l2/bluetooth_shell.c
+++ b/subsys/net/ip/l2/bluetooth_shell.c
@@ -23,7 +23,7 @@
 
 #define BT_SHELL_MODULE "net_bt"
 
-static int char2hex(const char *c, uint8_t *x)
+static int char2hex(const char *c, u8_t *x)
 {
 	if (*c >= '0' && *c <= '9') {
 		*x = *c - '0';
@@ -41,7 +41,7 @@
 static int str2bt_addr_le(const char *str, const char *type, bt_addr_le_t *addr)
 {
 	int i, j;
-	uint8_t tmp;
+	u8_t tmp;
 
 	if (strlen(str) != 17) {
 		return -EINVAL;
diff --git a/subsys/net/ip/l2/dummy.c b/subsys/net/ip/l2/dummy.c
index 6b488e1..2b1c1b6 100644
--- a/subsys/net/ip/l2/dummy.c
+++ b/subsys/net/ip/l2/dummy.c
@@ -30,7 +30,7 @@
 	return NET_OK;
 }
 
-static inline uint16_t dummy_reserve(struct net_if *iface, void *unused)
+static inline u16_t dummy_reserve(struct net_if *iface, void *unused)
 {
 	ARG_UNUSED(iface);
 	ARG_UNUSED(unused);
diff --git a/subsys/net/ip/l2/ethernet.c b/subsys/net/ip/l2/ethernet.c
index b60ee00..b255349 100644
--- a/subsys/net/ip/l2/ethernet.c
+++ b/subsys/net/ip/l2/ethernet.c
@@ -52,7 +52,7 @@
 static inline void ethernet_update_length(struct net_if *iface,
 					  struct net_pkt *pkt)
 {
-	uint16_t len;
+	u16_t len;
 
 	/* Let's check IP payload's length. If it's smaller than 46 bytes,
 	 * i.e. smaller than minimal Ethernet frame size minus ethernet
@@ -137,7 +137,7 @@
 #ifdef CONFIG_NET_ARP
 	if (family == AF_INET && hdr->type == htons(NET_ETH_PTYPE_ARP)) {
 		NET_DBG("ARP packet from %s received",
-			net_sprint_ll_addr((uint8_t *)hdr->src.addr,
+			net_sprint_ll_addr((u8_t *)hdr->src.addr,
 					   sizeof(struct net_eth_addr)));
 		return net_arp_input(pkt);
 	}
@@ -155,7 +155,7 @@
 	if (net_ipv4_addr_cmp(&NET_IPV4_HDR(pkt)->dst,
 			      net_ipv4_broadcast_address())) {
 		/* Broadcast address */
-		net_pkt_ll_dst(pkt)->addr = (uint8_t *)broadcast_eth_addr.addr;
+		net_pkt_ll_dst(pkt)->addr = (u8_t *)broadcast_eth_addr.addr;
 		net_pkt_ll_dst(pkt)->len = sizeof(struct net_eth_addr);
 		net_pkt_ll_src(pkt)->addr = net_if_get_link_addr(iface)->addr;
 		net_pkt_ll_src(pkt)->len = sizeof(struct net_eth_addr);
@@ -185,7 +185,7 @@
 {
 	struct net_eth_hdr *hdr = NET_ETH_HDR(pkt);
 	struct net_buf *frag;
-	uint16_t ptype;
+	u16_t ptype;
 
 #ifdef CONFIG_NET_ARP
 	if (net_pkt_family(pkt) == AF_INET) {
@@ -205,9 +205,9 @@
 
 		pkt = arp_pkt;
 
-		net_pkt_ll_src(pkt)->addr = (uint8_t *)&NET_ETH_HDR(pkt)->src;
+		net_pkt_ll_src(pkt)->addr = (u8_t *)&NET_ETH_HDR(pkt)->src;
 		net_pkt_ll_src(pkt)->len = sizeof(struct net_eth_addr);
-		net_pkt_ll_dst(pkt)->addr = (uint8_t *)&NET_ETH_HDR(pkt)->dst;
+		net_pkt_ll_dst(pkt)->addr = (u8_t *)&NET_ETH_HDR(pkt)->dst;
 		net_pkt_ll_dst(pkt)->len = sizeof(struct net_eth_addr);
 
 		/* For ARP message, we do not touch the packet further but will
@@ -242,18 +242,18 @@
 		    net_is_ipv6_addr_mcast(&NET_IPV6_HDR(pkt)->dst)) {
 			struct net_eth_addr *dst = &NET_ETH_HDR(pkt)->dst;
 
-			memcpy(dst, (uint8_t *)multicast_eth_addr.addr,
+			memcpy(dst, (u8_t *)multicast_eth_addr.addr,
 			       sizeof(struct net_eth_addr) - 4);
-			memcpy((uint8_t *)dst + 2,
-			       (uint8_t *)(&NET_IPV6_HDR(pkt)->dst) + 12,
+			memcpy((u8_t *)dst + 2,
+			       (u8_t *)(&NET_IPV6_HDR(pkt)->dst) + 12,
 				sizeof(struct net_eth_addr) - 2);
 
-			net_pkt_ll_dst(pkt)->addr = (uint8_t *)dst->addr;
+			net_pkt_ll_dst(pkt)->addr = (u8_t *)dst->addr;
 		} else
 #endif
 		{
 			net_pkt_ll_dst(pkt)->addr =
-				(uint8_t *)broadcast_eth_addr.addr;
+				(u8_t *)broadcast_eth_addr.addr;
 		}
 
 		net_pkt_ll_dst(pkt)->len = sizeof(struct net_eth_addr);
@@ -302,7 +302,7 @@
 	return NET_OK;
 }
 
-static inline uint16_t ethernet_reserve(struct net_if *iface, void *unused)
+static inline u16_t ethernet_reserve(struct net_if *iface, void *unused)
 {
 	ARG_UNUSED(iface);
 	ARG_UNUSED(unused);
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154.c b/subsys/net/ip/l2/ieee802154/ieee802154.c
index f59869b..eba480f 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154.c
@@ -34,7 +34,7 @@
 
 #include <misc/printk.h>
 
-static inline void hexdump(uint8_t *pkt, uint16_t length, uint8_t reserve)
+static inline void hexdump(u8_t *pkt, u16_t length, u8_t reserve)
 {
 	int i;
 
@@ -65,7 +65,7 @@
 
 static void pkt_hexdump(struct net_pkt *pkt, bool each_frag_reserve)
 {
-	uint16_t reserve = each_frag_reserve ? net_pkt_ll_reserve(pkt) : 0;
+	u16_t reserve = each_frag_reserve ? net_pkt_ll_reserve(pkt) : 0;
 	struct net_buf *frag;
 
 	printk("IEEE 802.15.4 packet content:\n");
@@ -151,8 +151,8 @@
 					       struct net_pkt *pkt)
 {
 	enum net_verdict verdict = NET_CONTINUE;
-	uint32_t src;
-	uint32_t dst;
+	u32_t src;
+	u32_t dst;
 
 	/* Upper IP stack expects the link layer address to be in
 	 * big endian format so we must swap it here.
@@ -270,7 +270,7 @@
 					struct net_pkt *pkt)
 {
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
-	uint8_t reserved_space = net_pkt_ll_reserve(pkt);
+	u8_t reserved_space = net_pkt_ll_reserve(pkt);
 	struct net_buf *frag;
 
 	if (net_pkt_family(pkt) != AF_INET6) {
@@ -304,7 +304,7 @@
 	return NET_OK;
 }
 
-static uint16_t ieee802154_reserve(struct net_if *iface, void *data)
+static u16_t ieee802154_reserve(struct net_if *iface, void *data)
 {
 	return ieee802154_compute_header_size(iface, (struct in6_addr *)data);
 }
@@ -317,8 +317,8 @@
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
 	const struct ieee802154_radio_api *radio =
 		iface->dev->driver_api;
-	const uint8_t *mac = iface->link_addr.addr;
-	uint8_t long_addr[8];
+	const u8_t *mac = iface->link_addr.addr;
+	u8_t long_addr[8];
 
 	NET_DBG("Initializing IEEE 802.15.4 stack on iface %p", iface);
 
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_fragment.c b/subsys/net/ip/l2/ieee802154/ieee802154_fragment.c
index 2d389a4..66eb3fa 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_fragment.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_fragment.c
@@ -29,7 +29,7 @@
 				 CONFIG_NET_L2_IEEE802154_REASSEMBLY_TIMEOUT)
 #define REASS_CACHE_SIZE CONFIG_NET_L2_IEEE802154_FRAGMENT_REASS_CACHE_SIZE
 
-static uint16_t datagram_tag;
+static u16_t datagram_tag;
 
 /**
  *  Reassemble cache : Depends on cache size it used for reassemble
@@ -38,8 +38,8 @@
 struct frag_cache {
 	struct k_delayed_work timer;	/* Reassemble timer */
 	struct net_pkt *pkt;		/* Reassemble packet */
-	uint16_t size;			/* Datagram size */
-	uint16_t tag;			/* Datagram tag */
+	u16_t size;			/* Datagram size */
+	u16_t tag;			/* Datagram tag */
 	bool used;
 };
 
@@ -79,7 +79,7 @@
  */
 
 static inline struct net_buf *prepare_new_fragment(struct net_pkt *pkt,
-						   uint8_t offset)
+						   u8_t offset)
 {
 	struct net_buf *frag;
 
@@ -100,22 +100,22 @@
 	return frag;
 }
 
-static inline void set_datagram_size(uint8_t *ptr, uint16_t size)
+static inline void set_datagram_size(u8_t *ptr, u16_t size)
 {
 	ptr[0] |= ((size & 0x7FF) >> 8);
-	ptr[1] = (uint8_t) size;
+	ptr[1] = (u8_t) size;
 }
 
-static inline void set_datagram_tag(uint8_t *ptr, uint16_t tag)
+static inline void set_datagram_tag(u8_t *ptr, u16_t tag)
 {
 	ptr[0] = tag >> 8;
-	ptr[1] = (uint8_t) tag;
+	ptr[1] = (u8_t) tag;
 }
 
-static inline void set_up_frag_hdr(struct net_buf *frag, uint16_t size,
-				   uint8_t offset)
+static inline void set_up_frag_hdr(struct net_buf *frag, u16_t size,
+				   u8_t offset)
 {
-	uint8_t pos = 0;
+	u8_t pos = 0;
 
 	if (offset) {
 		frag->data[pos] = NET_6LO_DISPATCH_FRAGN;
@@ -134,11 +134,11 @@
 	}
 }
 
-static inline uint8_t calc_max_payload(struct net_pkt *pkt,
+static inline u8_t calc_max_payload(struct net_pkt *pkt,
 				       struct net_buf *frag,
-				       uint8_t offset)
+				       u8_t offset)
 {
-	uint8_t max;
+	u8_t max;
 
 	max = frag->size - net_pkt_ll_reserve(pkt);
 	max -= offset ? NET_6LO_FRAGN_HDR_LEN : NET_6LO_FRAG1_HDR_LEN;
@@ -146,16 +146,16 @@
 	return (max & 0xF8);
 }
 
-static inline uint8_t move_frag_data(struct net_buf *frag,
+static inline u8_t move_frag_data(struct net_buf *frag,
 				     struct net_buf *next,
-				     uint8_t max,
+				     u8_t max,
 				     bool first,
 				     int hdr_diff,
-				     uint8_t *room_left)
+				     u8_t *room_left)
 {
-	uint8_t room;
-	uint8_t move;
-	uint8_t occupied;
+	u8_t room;
+	u8_t move;
+	u8_t occupied;
 
 	/* First fragment */
 	if (first) {
@@ -184,9 +184,9 @@
 	return move;
 }
 
-static inline void compact_frag(struct net_buf *frag, uint8_t moved)
+static inline void compact_frag(struct net_buf *frag, u8_t moved)
 {
-	uint8_t remaining = frag->len - moved;
+	u8_t remaining = frag->len - moved;
 
 	/* Move remaining data next to fragmentation header,
 	 * (leave space for header).
@@ -225,12 +225,12 @@
 {
 	struct net_buf *frag;
 	struct net_buf *next;
-	uint16_t processed;
-	uint16_t offset;
-	uint16_t size;
-	uint8_t room;
-	uint8_t move;
-	uint8_t max;
+	u16_t processed;
+	u16_t offset;
+	u16_t size;
+	u8_t room;
+	u8_t move;
+	u8_t max;
 	bool first;
 
 	if (!pkt || !pkt->frags) {
@@ -296,37 +296,37 @@
 	return true;
 }
 
-static inline uint16_t get_datagram_size(uint8_t *ptr)
+static inline u16_t get_datagram_size(u8_t *ptr)
 {
 	return ((ptr[0] & 0x1F) << 8) | ptr[1];
 }
 
-static inline uint16_t get_datagram_tag(uint8_t *ptr)
+static inline u16_t get_datagram_tag(u8_t *ptr)
 {
 	return (ptr[0] << 8) | ptr[1];
 }
 
-static inline void remove_frag_header(struct net_buf *frag, uint8_t hdr_len)
+static inline void remove_frag_header(struct net_buf *frag, u8_t hdr_len)
 {
 	memmove(frag->data, frag->data + hdr_len, frag->len - hdr_len);
 	frag->len -= hdr_len;
 }
 
-static void update_protocol_header_lengths(struct net_pkt *pkt, uint16_t size)
+static void update_protocol_header_lengths(struct net_pkt *pkt, u16_t size)
 {
 	net_pkt_set_ip_hdr_len(pkt, NET_IPV6H_LEN);
 
 	NET_IPV6_HDR(pkt)->len[0] = (size - NET_IPV6H_LEN) >> 8;
-	NET_IPV6_HDR(pkt)->len[1] = (uint8_t) (size - NET_IPV6H_LEN);
+	NET_IPV6_HDR(pkt)->len[1] = (u8_t) (size - NET_IPV6H_LEN);
 
 	if (NET_IPV6_HDR(pkt)->nexthdr == IPPROTO_UDP) {
 		NET_UDP_HDR(pkt)->len = htons(size - NET_IPV6H_LEN);
 	}
 }
 
-static inline void clear_reass_cache(uint16_t size, uint16_t tag)
+static inline void clear_reass_cache(u16_t size, u16_t tag)
 {
-	uint8_t i;
+	u8_t i;
 
 	for (i = 0; i < REASS_CACHE_SIZE; i++) {
 		if (!(cache[i].size == size && cache[i].tag == tag)) {
@@ -369,7 +369,7 @@
  *  discard the fragments.
  */
 static inline struct frag_cache *set_reass_cache(struct net_pkt *pkt,
-						 uint16_t size, uint16_t tag)
+						 u16_t size, u16_t tag)
 {
 	int i;
 
@@ -395,9 +395,9 @@
  *  Return cache if it matches with size and tag of stored caches,
  *  otherwise return NULL.
  */
-static inline struct frag_cache *get_reass_cache(uint16_t size, uint16_t tag)
+static inline struct frag_cache *get_reass_cache(u16_t size, u16_t tag)
 {
-	uint8_t i;
+	u8_t i;
 
 	for (i = 0; i < REASS_CACHE_SIZE; i++) {
 		if (cache[i].used) {
@@ -414,11 +414,11 @@
 /* Helper function to write fragment data to Rx packet based on offset. */
 static inline bool copy_frag(struct net_pkt *pkt,
 			     struct net_buf *frag,
-			     uint16_t offset)
+			     u16_t offset)
 {
 	struct net_buf *input = frag;
 	struct net_buf *write;
-	uint16_t pos = offset;
+	u16_t pos = offset;
 
 	write = pkt->frags;
 
@@ -456,10 +456,10 @@
 {
 	struct frag_cache *cache;
 	struct net_buf *frag;
-	uint16_t size;
-	uint16_t tag;
-	uint16_t offset = 0;
-	uint8_t pos = 0;
+	u16_t size;
+	u16_t tag;
+	u16_t offset = 0;
+	u8_t pos = 0;
 
 	/* Parse total size of packet */
 	size = get_datagram_size(pkt->frags->data);
@@ -470,7 +470,7 @@
 	pos += NET_6LO_FRAG_DATAGRAM_OFFSET_LEN;
 
 	if (!first) {
-		offset = ((uint16_t)pkt->frags->data[pos]) << 3;
+		offset = ((u16_t)pkt->frags->data[pos]) << 3;
 		pos++;
 	}
 
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_frame.c b/subsys/net/ip/l2/ieee802154/ieee802154_frame.c
index 8f8e44a..00dec39 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_frame.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_frame.c
@@ -30,7 +30,7 @@
 #include "ieee802154_security.h"
 
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
-const uint8_t level_2_tag_size[4] = {
+const u8_t level_2_tag_size[4] = {
 	0,
 	IEEE8021254_AUTH_TAG_LENGTH_32,
 	IEEE8021254_AUTH_TAG_LENGTH_64,
@@ -39,7 +39,7 @@
 #endif
 
 static inline struct ieee802154_fcf_seq *
-validate_fc_seq(uint8_t *buf, uint8_t **p_buf)
+validate_fc_seq(u8_t *buf, u8_t **p_buf)
 {
 	struct ieee802154_fcf_seq *fs = (struct ieee802154_fcf_seq *)buf;
 
@@ -87,7 +87,7 @@
 }
 
 static inline struct ieee802154_address_field *
-validate_addr(uint8_t *buf, uint8_t **p_buf,
+validate_addr(u8_t *buf, u8_t **p_buf,
 	      enum ieee802154_addressing_mode mode,
 	      bool pan_id_compression)
 {
@@ -116,7 +116,7 @@
 
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
 struct ieee802154_aux_security_hdr *
-ieee802154_validate_aux_security_hdr(uint8_t *buf, uint8_t **p_buf)
+ieee802154_validate_aux_security_hdr(u8_t *buf, u8_t **p_buf)
 {
 	struct ieee802154_aux_security_hdr *ash =
 		(struct ieee802154_aux_security_hdr *)buf;
@@ -130,7 +130,7 @@
 
 	/* At least the asf is sized of: control field + frame counter */
 	*p_buf += sizeof(struct ieee802154_security_control_field) +
-		sizeof(uint32_t);
+		sizeof(u32_t);
 
 	/* Explicit key must have a key index != 0x00, see Section 7.4.3.2 */
 	switch (ash->control.key_id_mode) {
@@ -167,10 +167,10 @@
 #endif /* CONFIG_NET_L2_IEEE802154_SECURITY */
 
 static inline bool
-validate_beacon(struct ieee802154_mpdu *mpdu, uint8_t *buf, uint8_t length)
+validate_beacon(struct ieee802154_mpdu *mpdu, u8_t *buf, u8_t length)
 {
 	struct ieee802154_beacon *b = (struct ieee802154_beacon *)buf;
-	uint8_t *p_buf = buf;
+	u8_t *p_buf = buf;
 	struct ieee802154_pas_spec *pas;
 
 	if (length < IEEE802154_BEACON_MIN_SIZE) {
@@ -207,9 +207,9 @@
 
 static inline bool
 validate_mac_command_cfi_to_mhr(struct ieee802154_mhr *mhr,
-				uint8_t ar, uint8_t comp,
-				uint8_t src, bool src_pan_brdcst_chk,
-				uint8_t dst, bool dst_brdcst_chk)
+				u8_t ar, u8_t comp,
+				u8_t src, bool src_pan_brdcst_chk,
+				u8_t dst, bool dst_brdcst_chk)
 {
 	if (mhr->fs->fc.ar != ar || mhr->fs->fc.pan_id_comp != comp) {
 		return false;
@@ -240,14 +240,14 @@
 }
 
 static inline bool
-validate_mac_command(struct ieee802154_mpdu *mpdu, uint8_t *buf, uint8_t length)
+validate_mac_command(struct ieee802154_mpdu *mpdu, u8_t *buf, u8_t length)
 {
 	struct ieee802154_command *c = (struct ieee802154_command *)buf;
 	bool src_pan_brdcst_chk = false;
 	bool dst_brdcst_chk = false;
-	uint8_t comp = 0;
-	uint8_t ar = 0;
-	uint8_t src, dst;
+	u8_t comp = 0;
+	u8_t ar = 0;
+	u8_t src, dst;
 
 	switch (c->cfi) {
 	case IEEE802154_CFI_UNKNOWN:
@@ -329,15 +329,15 @@
 
 static inline bool
 validate_payload_and_mfr(struct ieee802154_mpdu *mpdu,
-			 uint8_t *buf, uint8_t *p_buf, uint8_t length)
+			 u8_t *buf, u8_t *p_buf, u8_t length)
 {
-	uint8_t type = mpdu->mhr.fs->fc.frame_type;
-	uint8_t payload_length;
+	u8_t type = mpdu->mhr.fs->fc.frame_type;
+	u8_t payload_length;
 
 	payload_length = length - (p_buf - buf);
 
 	NET_DBG("Header size: %u, vs total length %u: payload size %u",
-		(uint32_t)(p_buf - buf), length, payload_length);
+		(u32_t)(p_buf - buf), length, payload_length);
 
 	if (type == IEEE802154_FRAME_TYPE_BEACON) {
 		if (!validate_beacon(mpdu, p_buf, payload_length)) {
@@ -368,10 +368,10 @@
 	return true;
 }
 
-bool ieee802154_validate_frame(uint8_t *buf, uint8_t length,
+bool ieee802154_validate_frame(u8_t *buf, u8_t length,
 			       struct ieee802154_mpdu *mpdu)
 {
-	uint8_t *p_buf = NULL;
+	u8_t *p_buf = NULL;
 
 	if (length > IEEE802154_MTU || length < IEEE802154_MIN_LENGTH) {
 		NET_DBG("Wrong packet length: %d", length);
@@ -409,10 +409,10 @@
 	return validate_payload_and_mfr(mpdu, buf, p_buf, length);
 }
 
-uint16_t ieee802154_compute_header_size(struct net_if *iface,
+u16_t ieee802154_compute_header_size(struct net_if *iface,
 					struct in6_addr *dst)
 {
-	uint16_t hdr_len = sizeof(struct ieee802154_fcf_seq);
+	u16_t hdr_len = sizeof(struct ieee802154_fcf_seq);
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
 	struct ieee802154_security_ctx *sec_ctx =
 		&((struct ieee802154_context *)net_if_l2_data(iface))->sec_ctx;
@@ -494,7 +494,7 @@
 	return hdr_len;
 }
 
-static inline struct ieee802154_fcf_seq *generate_fcf_grounds(uint8_t **p_buf,
+static inline struct ieee802154_fcf_seq *generate_fcf_grounds(u8_t **p_buf,
 							      bool ack)
 {
 	struct ieee802154_fcf_seq *fs;
@@ -570,10 +570,10 @@
 }
 
 static
-uint8_t *generate_addressing_fields(struct ieee802154_context *ctx,
+u8_t *generate_addressing_fields(struct ieee802154_context *ctx,
 				    struct ieee802154_fcf_seq *fs,
 				    struct ieee802154_frame_params *params,
-				    uint8_t *p_buf)
+				    u8_t *p_buf)
 {
 	struct ieee802154_address_field *af;
 	struct ieee802154_address *src_addr;
@@ -624,8 +624,8 @@
 
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
 static
-uint8_t *generate_aux_security_hdr(struct ieee802154_security_ctx *sec_ctx,
-				   uint8_t *p_buf)
+u8_t *generate_aux_security_hdr(struct ieee802154_security_ctx *sec_ctx,
+				   u8_t *p_buf)
 {
 	struct ieee802154_aux_security_hdr *aux_sec;
 
@@ -654,12 +654,12 @@
 bool ieee802154_create_data_frame(struct ieee802154_context *ctx,
 				  struct net_linkaddr *dst,
 				  struct net_buf *frag,
-				  uint8_t reserved_len)
+				  u8_t reserved_len)
 {
 	struct ieee802154_frame_params params;
 	struct ieee802154_fcf_seq *fs;
-	uint8_t *p_buf = frag->data - reserved_len;
-	uint8_t *frag_start = p_buf;
+	u8_t *p_buf = frag->data - reserved_len;
+	u8_t *frag_start = p_buf;
 	bool broadcast;
 
 	fs = generate_fcf_grounds(&p_buf, ctx->ack_requested);
@@ -690,7 +690,7 @@
 	 */
 	if (ctx->sec_ctx.level != IEEE802154_SECURITY_LEVEL_NONE &&
 	    ctx->sec_ctx.level != IEEE802154_SECURITY_LEVEL_ENC) {
-		uint8_t level;
+		u8_t level;
 
 		level = ctx->sec_ctx.level;
 		if (level >= IEEE802154_SECURITY_LEVEL_ENC) {
@@ -785,9 +785,9 @@
 	return true;
 }
 
-static inline uint8_t mac_command_length(enum ieee802154_cfi cfi)
+static inline u8_t mac_command_length(enum ieee802154_cfi cfi)
 {
-	uint8_t reserve = 1; /* cfi is at least present */
+	u8_t reserve = 1; /* cfi is at least present */
 
 	switch (cfi) {
 	case IEEE802154_CFI_ASSOCIATION_REQUEST:
@@ -816,7 +816,7 @@
 	struct ieee802154_fcf_seq *fs;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint8_t *p_buf;
+	u8_t *p_buf;
 
 	pkt = net_pkt_get_reserve_tx(0, K_FOREVER);
 	if (!pkt) {
@@ -873,9 +873,9 @@
 
 #ifdef CONFIG_NET_L2_IEEE802154_ACK_REPLY
 bool ieee802154_create_ack_frame(struct net_if *iface,
-				 struct net_pkt *pkt, uint8_t seq)
+				 struct net_pkt *pkt, u8_t seq)
 {
-	uint8_t *p_buf = net_pkt_ll(pkt);
+	u8_t *p_buf = net_pkt_ll(pkt);
 	struct ieee802154_fcf_seq *fs;
 
 	if (!p_buf) {
@@ -899,7 +899,7 @@
 				    struct ieee802154_mpdu *mpdu)
 {
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
-	uint8_t level;
+	u8_t level;
 
 	if (!mpdu->mhr.fs->fc.security_enabled) {
 		return true;
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_frame.h b/subsys/net/ip/l2/ieee802154/ieee802154_frame.h
index 3134cf7..cc48290 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_frame.h
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_frame.h
@@ -77,40 +77,40 @@
 struct ieee802154_fcf_seq {
 	struct {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-		uint16_t frame_type		:3;
-		uint16_t security_enabled	:1;
-		uint16_t frame_pending		:1;
-		uint16_t ar			:1;
-		uint16_t pan_id_comp		:1;
-		uint16_t reserved		:1;
-		uint16_t seq_num_suppr		:1;
-		uint16_t ie_list		:1;
-		uint16_t dst_addr_mode		:2;
-		uint16_t frame_version		:2;
-		uint16_t src_addr_mode		:2;
+		u16_t frame_type		:3;
+		u16_t security_enabled	:1;
+		u16_t frame_pending		:1;
+		u16_t ar			:1;
+		u16_t pan_id_comp		:1;
+		u16_t reserved		:1;
+		u16_t seq_num_suppr		:1;
+		u16_t ie_list		:1;
+		u16_t dst_addr_mode		:2;
+		u16_t frame_version		:2;
+		u16_t src_addr_mode		:2;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-		uint16_t reserved		:1;
-		uint16_t pan_id_comp		:1;
-		uint16_t ar			:1;
-		uint16_t frame_pending		:1;
-		uint16_t security_enabled	:1;
-		uint16_t frame_type		:3;
-		uint16_t src_addr_mode		:2;
-		uint16_t frame_version		:2;
-		uint16_t dst_addr_mode		:2;
-		uint16_t ie_list		:1;
-		uint16_t seq_num_suppr		:1;
+		u16_t reserved		:1;
+		u16_t pan_id_comp		:1;
+		u16_t ar			:1;
+		u16_t frame_pending		:1;
+		u16_t security_enabled	:1;
+		u16_t frame_type		:3;
+		u16_t src_addr_mode		:2;
+		u16_t frame_version		:2;
+		u16_t dst_addr_mode		:2;
+		u16_t ie_list		:1;
+		u16_t seq_num_suppr		:1;
 #endif
 	} fc __packed;
 
-	uint8_t sequence;
+	u8_t sequence;
 } __packed;
 
 struct ieee802154_address {
 	union {
-		uint8_t simple_addr;
-		uint16_t short_addr;
-		uint8_t ext_addr[0];
+		u8_t simple_addr;
+		u16_t short_addr;
+		u8_t ext_addr[0];
 	};
 } __packed;
 
@@ -119,7 +119,7 @@
 } __packed;
 
 struct ieee802154_address_field_plain {
-	uint16_t pan_id;
+	u16_t pan_id;
 	struct ieee802154_address addr;
 } __packed;
 
@@ -164,13 +164,13 @@
 /* See Section 7.4.1 */
 struct ieee802154_security_control_field {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-	uint8_t security_level	:3;
-	uint8_t key_id_mode	:2;
-	uint8_t reserved	:3;
+	u8_t security_level	:3;
+	u8_t key_id_mode	:2;
+	u8_t reserved	:3;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-	uint8_t reserved	:3;
-	uint8_t key_id_mode	:2;
-	uint8_t security_level	:3;
+	u8_t reserved	:3;
+	u8_t key_id_mode	:2;
+	u8_t security_level	:3;
 #endif
 } __packed;
 
@@ -181,17 +181,17 @@
 	union {
 		/* mode_0 being implicit, it holds no info here */
 		struct {
-			uint8_t key_index;
+			u8_t key_index;
 		} mode_1;
 
 		struct {
-			uint8_t key_src[4];
-			uint8_t key_index;
+			u8_t key_src[4];
+			u8_t key_index;
 		} mode_2;
 
 		struct {
-			uint8_t key_src[8];
-			uint8_t key_index;
+			u8_t key_src[8];
+			u8_t key_index;
 		} mode_3;
 	};
 } __packed;
@@ -202,7 +202,7 @@
  */
 struct ieee802154_aux_security_hdr {
 	struct ieee802154_security_control_field control;
-	uint32_t frame_counter;
+	u32_t frame_counter;
 	struct ieee802154_key_identifier_field kif;
 } __packed;
 
@@ -219,93 +219,93 @@
 };
 
 struct ieee802154_mfr {
-	uint16_t fcs;
+	u16_t fcs;
 };
 
 struct ieee802154_gts_dir {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-	uint8_t mask			: 7;
-	uint8_t reserved		: 1;
+	u8_t mask			: 7;
+	u8_t reserved		: 1;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-	uint8_t reserved		: 1;
-	uint8_t mask			: 7;
+	u8_t reserved		: 1;
+	u8_t mask			: 7;
 #endif
 } __packed;
 
 struct ieee802154_gts {
-	uint16_t short_address;
+	u16_t short_address;
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-	uint8_t starting_slot		: 4;
-	uint8_t length			: 4;
+	u8_t starting_slot		: 4;
+	u8_t length			: 4;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-	uint8_t length			: 4;
-	uint8_t starting_slot		: 4;
+	u8_t length			: 4;
+	u8_t starting_slot		: 4;
 #endif
 } __packed;
 
 struct ieee802154_gts_spec {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	/* Descriptor Count */
-	uint8_t desc_count		: 3;
-	uint8_t reserved		: 4;
+	u8_t desc_count		: 3;
+	u8_t reserved		: 4;
 	/* GTS Permit */
-	uint8_t permit			: 1;
+	u8_t permit			: 1;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 	/* GTS Permit */
-	uint8_t permit			: 1;
-	uint8_t reserved		: 4;
+	u8_t permit			: 1;
+	u8_t reserved		: 4;
 	/* Descriptor Count */
-	uint8_t desc_count		: 3;
+	u8_t desc_count		: 3;
 #endif
 } __packed;
 
 struct ieee802154_pas_spec {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	/* Number of Short Addresses Pending */
-	uint8_t nb_sap			: 3;
-	uint8_t reserved_1		: 1;
+	u8_t nb_sap			: 3;
+	u8_t reserved_1		: 1;
 	/* Number of Extended Addresses Pending */
-	uint8_t nb_eap			: 3;
-	uint8_t reserved_2		: 1;
+	u8_t nb_eap			: 3;
+	u8_t reserved_2		: 1;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-	uint8_t reserved_1		: 1;
+	u8_t reserved_1		: 1;
 	/* Number of Extended Addresses Pending */
-	uint8_t nb_eap			: 3;
-	uint8_t reserved_2		: 1;
+	u8_t nb_eap			: 3;
+	u8_t reserved_2		: 1;
 	/* Number of Short Addresses Pending */
-	uint8_t nb_sap			: 3;
+	u8_t nb_sap			: 3;
 #endif
 } __packed;
 
 struct ieee802154_beacon_sf {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	/* Beacon Order*/
-	uint16_t bc_order	: 4;
+	u16_t bc_order	: 4;
 	/* Superframe Order*/
-	uint16_t sf_order	: 4;
+	u16_t sf_order	: 4;
 	/* Final CAP Slot */
-	uint16_t cap_slot	: 4;
+	u16_t cap_slot	: 4;
 	/* Battery Life Extension */
-	uint16_t ble		: 1;
-	uint16_t reserved	: 1;
+	u16_t ble		: 1;
+	u16_t reserved	: 1;
 	/* PAN Coordinator */
-	uint16_t coordinator	: 1;
+	u16_t coordinator	: 1;
 	/* Association Permit */
-	uint16_t association	: 1;
+	u16_t association	: 1;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 	/* Superframe Order*/
-	uint16_t sf_order	: 4;
+	u16_t sf_order	: 4;
 	/* Beacon Order*/
-	uint16_t bc_order	: 4;
+	u16_t bc_order	: 4;
 	/* Association Permit */
-	uint16_t association	: 1;
+	u16_t association	: 1;
 	/* PAN Coordinator */
-	uint16_t coordinator	: 1;
-	uint16_t reserved	: 1;
+	u16_t coordinator	: 1;
+	u16_t reserved	: 1;
 	/* Battery Life Extension */
-	uint16_t ble		: 1;
+	u16_t ble		: 1;
 	/* Final CAP Slot */
-	uint16_t cap_slot	: 4;
+	u16_t cap_slot	: 4;
 #endif
 } __packed;
 
@@ -320,21 +320,21 @@
 struct ieee802154_cmd_assoc_req {
 	struct {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-		uint8_t reserved_1	: 1;
-		uint8_t dev_type	: 1;
-		uint8_t power_src	: 1;
-		uint8_t rx_on		: 1;
-		uint8_t reserved_2	: 2;
-		uint8_t sec_capability	: 1;
-		uint8_t alloc_addr	: 1;
+		u8_t reserved_1	: 1;
+		u8_t dev_type	: 1;
+		u8_t power_src	: 1;
+		u8_t rx_on		: 1;
+		u8_t reserved_2	: 2;
+		u8_t sec_capability	: 1;
+		u8_t alloc_addr	: 1;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-		uint8_t alloc_addr	: 1;
-		uint8_t sec_capability	: 1;
-		uint8_t reserved_2	: 2;
-		uint8_t rx_on		: 1;
-		uint8_t power_src	: 1;
-		uint8_t dev_type	: 1;
-		uint8_t reserved_1	: 1;
+		u8_t alloc_addr	: 1;
+		u8_t sec_capability	: 1;
+		u8_t reserved_2	: 2;
+		u8_t rx_on		: 1;
+		u8_t power_src	: 1;
+		u8_t dev_type	: 1;
+		u8_t reserved_1	: 1;
 #endif
 	} ci;
 } __packed;
@@ -349,8 +349,8 @@
 };
 
 struct ieee802154_cmd_assoc_res {
-	uint16_t short_addr;
-	uint8_t status;
+	u16_t short_addr;
+	u8_t status;
 } __packed;
 
 /* See Section 5.3.3 */
@@ -363,31 +363,31 @@
 };
 
 struct ieee802154_cmd_disassoc_note {
-	uint8_t reason;
+	u8_t reason;
 } __packed;
 
 /* See Section 5.3.8 */
 struct ieee802154_cmd_coord_realign {
-	uint16_t pan_id;
-	uint16_t coordinator_short_addr;
-	uint8_t channel;
-	uint16_t short_addr;
-	uint8_t channel_page; /* Optional */
+	u16_t pan_id;
+	u16_t coordinator_short_addr;
+	u8_t channel;
+	u16_t short_addr;
+	u8_t channel_page; /* Optional */
 } __packed;
 
 /* See Section 5.3.9 */
 struct ieee802154_gts_request {
 	struct {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-		uint8_t length		: 4;
-		uint8_t direction	: 1;
-		uint8_t type		: 1;
-		uint8_t reserved	: 2;
+		u8_t length		: 4;
+		u8_t direction	: 1;
+		u8_t type		: 1;
+		u8_t reserved	: 2;
 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-		uint8_t reserved	: 2;
-		uint8_t type		: 1;
-		uint8_t direction	: 1;
-		uint8_t length		: 4;
+		u8_t reserved	: 2;
+		u8_t type		: 1;
+		u8_t direction	: 1;
+		u8_t length		: 4;
 #endif
 	} gts;
 } __packed;
@@ -408,7 +408,7 @@
 };
 
 struct ieee802154_command {
-	uint8_t cfi;
+	u8_t cfi;
 	union {
 		struct ieee802154_cmd_assoc_req assoc_req;
 		struct ieee802154_cmd_assoc_res assoc_res;
@@ -436,33 +436,33 @@
 struct ieee802154_frame_params {
 	struct {
 		union {
-			uint8_t *ext_addr;
-			uint16_t short_addr;
+			u8_t *ext_addr;
+			u16_t short_addr;
 		};
 
-		uint16_t len;
-		uint16_t pan_id;
+		u16_t len;
+		u16_t pan_id;
 	} dst;
 
-	uint16_t short_addr;
-	uint16_t pan_id;
+	u16_t short_addr;
+	u16_t pan_id;
 } __packed;
 
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
 struct ieee802154_aux_security_hdr *
-ieee802154_validate_aux_security_hdr(uint8_t *buf, uint8_t **p_buf);
+ieee802154_validate_aux_security_hdr(u8_t *buf, u8_t **p_buf);
 #endif
 
-bool ieee802154_validate_frame(uint8_t *buf, uint8_t length,
+bool ieee802154_validate_frame(u8_t *buf, u8_t length,
 			       struct ieee802154_mpdu *mpdu);
 
-uint16_t ieee802154_compute_header_size(struct net_if *iface,
+u16_t ieee802154_compute_header_size(struct net_if *iface,
 					struct in6_addr *dst);
 
 bool ieee802154_create_data_frame(struct ieee802154_context *ctx,
 				  struct net_linkaddr *dst,
 				  struct net_buf *frag,
-				  uint8_t reserved_len);
+				  u8_t reserved_len);
 
 struct net_pkt *
 ieee802154_create_mac_cmd_frame(struct ieee802154_context *ctx,
@@ -477,7 +477,7 @@
 
 #ifdef CONFIG_NET_L2_IEEE802154_ACK_REPLY
 bool ieee802154_create_ack_frame(struct net_if *iface,
-				 struct net_pkt *pkt, uint8_t seq);
+				 struct net_pkt *pkt, u8_t seq);
 #endif
 
 static inline bool ieee802154_ack_required(struct net_pkt *pkt)
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_mgmt.c b/subsys/net/ip/l2/ieee802154/ieee802154_mgmt.c
index 68418d0..3311802 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_mgmt.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_mgmt.c
@@ -61,7 +61,7 @@
 	return NET_OK;
 }
 
-static int ieee802154_cancel_scan(uint32_t mgmt_request, struct net_if *iface,
+static int ieee802154_cancel_scan(u32_t mgmt_request, struct net_if *iface,
 				  void *data, size_t len)
 {
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
@@ -79,7 +79,7 @@
 NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_CANCEL_SCAN,
 				  ieee802154_cancel_scan);
 
-static int ieee802154_scan(uint32_t mgmt_request, struct net_if *iface,
+static int ieee802154_scan(u32_t mgmt_request, struct net_if *iface,
 			   void *data, size_t len)
 {
 	struct ieee802154_radio_api *radio =
@@ -88,7 +88,7 @@
 	struct ieee802154_req_params *scan =
 		(struct ieee802154_req_params *)data;
 	struct net_pkt *pkt = NULL;
-	uint8_t channel;
+	u8_t channel;
 	int ret;
 
 	NET_DBG("%s scan requested",
@@ -219,7 +219,7 @@
 	return NET_DROP;
 }
 
-static int ieee802154_associate(uint32_t mgmt_request, struct net_if *iface,
+static int ieee802154_associate(u32_t mgmt_request, struct net_if *iface,
 				void *data, size_t len)
 {
 	struct ieee802154_radio_api *radio =
@@ -299,7 +299,7 @@
 NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_ASSOCIATE,
 				  ieee802154_associate);
 
-static int ieee802154_disassociate(uint32_t mgmt_request, struct net_if *iface,
+static int ieee802154_disassociate(u32_t mgmt_request, struct net_if *iface,
 				   void *data, size_t len)
 {
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
@@ -343,7 +343,7 @@
 NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_DISASSOCIATE,
 				  ieee802154_disassociate);
 
-static int ieee802154_set_ack(uint32_t mgmt_request, struct net_if *iface,
+static int ieee802154_set_ack(u32_t mgmt_request, struct net_if *iface,
 			      void *data, size_t len)
 {
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
@@ -366,13 +366,13 @@
 NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_UNSET_ACK,
 				  ieee802154_set_ack);
 
-static int ieee802154_set_parameters(uint32_t mgmt_request,
+static int ieee802154_set_parameters(u32_t mgmt_request,
 				     struct net_if *iface,
 				     void *data, size_t len)
 {
 	const struct ieee802154_radio_api *radio = iface->dev->driver_api;
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
-	uint16_t value;
+	u16_t value;
 	int ret = 0;
 
 	if (ctx->associated) {
@@ -380,11 +380,11 @@
 	}
 
 	if (mgmt_request != NET_REQUEST_IEEE802154_SET_EXT_ADDR &&
-	    (len != sizeof(uint16_t) || !data)) {
+	    (len != sizeof(u16_t) || !data)) {
 		return -EINVAL;
 	}
 
-	value = *((uint16_t *) data);
+	value = *((u16_t *) data);
 
 	if (mgmt_request == NET_REQUEST_IEEE802154_SET_CHANNEL) {
 		if (ctx->channel != value) {
@@ -406,7 +406,7 @@
 		}
 
 		if (memcmp(ctx->ext_addr, data, IEEE802154_EXT_ADDR_LENGTH)) {
-			ret = radio->set_ieee_addr(iface->dev, (uint8_t *)data);
+			ret = radio->set_ieee_addr(iface->dev, (u8_t *)data);
 			if (!ret) {
 				memcpy(ctx->ext_addr, data,
 				       IEEE802154_EXT_ADDR_LENGTH);
@@ -420,10 +420,10 @@
 			}
 		}
 	} else if (mgmt_request == NET_REQUEST_IEEE802154_SET_TX_POWER) {
-		if (ctx->tx_power != (int16_t)value) {
-			ret = radio->set_txpower(iface->dev, (int16_t)value);
+		if (ctx->tx_power != (s16_t)value) {
+			ret = radio->set_txpower(iface->dev, (s16_t)value);
 			if (!ret) {
-				ctx->tx_power = (int16_t)value;
+				ctx->tx_power = (s16_t)value;
 			}
 		}
 	}
@@ -446,19 +446,19 @@
 NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_SET_TX_POWER,
 				  ieee802154_set_parameters);
 
-static int ieee802154_get_parameters(uint32_t mgmt_request,
+static int ieee802154_get_parameters(u32_t mgmt_request,
 				     struct net_if *iface,
 				     void *data, size_t len)
 {
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
-	uint16_t *value;
+	u16_t *value;
 
 	if (mgmt_request != NET_REQUEST_IEEE802154_GET_EXT_ADDR &&
-	    (len != sizeof(uint16_t) || !data)) {
+	    (len != sizeof(u16_t) || !data)) {
 		return -EINVAL;
 	}
 
-	value = (uint16_t *)data;
+	value = (u16_t *)data;
 
 	if (mgmt_request == NET_REQUEST_IEEE802154_GET_CHANNEL) {
 		*value = ctx->channel;
@@ -473,7 +473,7 @@
 	} else if (mgmt_request == NET_REQUEST_IEEE802154_GET_SHORT_ADDR) {
 		*value = ctx->short_addr;
 	} else if (mgmt_request == NET_REQUEST_IEEE802154_GET_TX_POWER) {
-		int16_t *s_value = (int16_t *)data;
+		s16_t *s_value = (s16_t *)data;
 
 		*s_value = ctx->tx_power;
 	}
@@ -498,7 +498,7 @@
 
 #ifdef CONFIG_NET_L2_IEEE802154_SECURITY
 
-static int ieee802154_set_security_settings(uint32_t mgmt_request,
+static int ieee802154_set_security_settings(u32_t mgmt_request,
 					    struct net_if *iface,
 					    void *data, size_t len)
 {
@@ -529,7 +529,7 @@
 NET_MGMT_REGISTER_REQUEST_HANDLER(NET_REQUEST_IEEE802154_SET_SECURITY_SETTINGS,
 				  ieee802154_set_security_settings);
 
-static int ieee802154_get_security_settings(uint32_t mgmt_request,
+static int ieee802154_get_security_settings(u32_t mgmt_request,
 					    struct net_if *iface,
 					    void *data, size_t len)
 {
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_radio_aloha.c b/subsys/net/ip/l2/ieee802154/ieee802154_radio_aloha.c
index b0366db..9099c33 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_radio_aloha.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_radio_aloha.c
@@ -23,7 +23,7 @@
 				    struct net_pkt *pkt,
 				    struct net_buf *frag)
 {
-	uint8_t retries = CONFIG_NET_L2_IEEE802154_RADIO_TX_RETRIES;
+	u8_t retries = CONFIG_NET_L2_IEEE802154_RADIO_TX_RETRIES;
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
 	bool ack_required = prepare_for_ack(ctx, pkt);
 	const struct ieee802154_radio_api *radio = iface->dev->driver_api;
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_radio_csma_ca.c b/subsys/net/ip/l2/ieee802154/ieee802154_radio_csma_ca.c
index bc2e79c..a541e9b 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_radio_csma_ca.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_radio_csma_ca.c
@@ -26,14 +26,14 @@
 				      struct net_pkt *pkt,
 				      struct net_buf *frag)
 {
-	const uint8_t max_bo = CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA_MAX_BO;
-	const uint8_t max_be = CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA_MAX_BE;
-	uint8_t retries = CONFIG_NET_L2_IEEE802154_RADIO_TX_RETRIES;
+	const u8_t max_bo = CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA_MAX_BO;
+	const u8_t max_be = CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA_MAX_BE;
+	u8_t retries = CONFIG_NET_L2_IEEE802154_RADIO_TX_RETRIES;
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
 	const struct ieee802154_radio_api *radio = iface->dev->driver_api;
 	bool ack_required = prepare_for_ack(ctx, pkt);
-	uint8_t be = CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA_MIN_BE;
-	uint8_t nb = 0;
+	u8_t be = CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA_MIN_BE;
+	u8_t nb = 0;
 	int ret = -EIO;
 
 	NET_DBG("frag %p", frag);
@@ -43,7 +43,7 @@
 		retries--;
 
 		if (be) {
-			uint8_t bo_n = sys_rand32_get() & (2 << (be + 1));
+			u8_t bo_n = sys_rand32_get() & (2 << (be + 1));
 
 			k_busy_wait(bo_n * 20);
 		}
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_security.c b/subsys/net/ip/l2/ieee802154/ieee802154_security.c
index 80a6dea..3ca797e 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_security.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_security.c
@@ -15,13 +15,13 @@
 #include "ieee802154_frame.h"
 #include "ieee802154_security.h"
 
-extern const uint8_t level_2_tag_size[4];
+extern const u8_t level_2_tag_size[4];
 
 int ieee802154_security_setup_session(struct ieee802154_security_ctx *sec_ctx,
-				      uint8_t level, uint8_t key_mode,
-				      uint8_t *key, uint8_t key_len)
+				      u8_t level, u8_t key_mode,
+				      u8_t *key, u8_t key_len)
 {
-	uint8_t tag_size;
+	u8_t tag_size;
 
 	if (level > IEEE802154_SECURITY_LEVEL_ENC_MIC_128 ||
 	    key_mode > IEEE802154_KEY_ID_MODE_SRC_8_INDEX) {
@@ -62,15 +62,15 @@
 }
 
 bool ieee802154_decrypt_auth(struct ieee802154_security_ctx *sec_ctx,
-			     uint8_t *frame,
-			     uint8_t auth_payload_len,
-			     uint8_t decrypt_payload_len,
-			     uint8_t *src_ext_addr,
-			     uint32_t frame_counter)
+			     u8_t *frame,
+			     u8_t auth_payload_len,
+			     u8_t decrypt_payload_len,
+			     u8_t *src_ext_addr,
+			     u32_t frame_counter)
 {
 	struct cipher_aead_pkt apkt;
 	struct cipher_pkt pkt;
-	uint8_t nonce[13];
+	u8_t nonce[13];
 	int ret;
 
 	if (!sec_ctx || sec_ctx->level == IEEE802154_SECURITY_LEVEL_NONE) {
@@ -79,10 +79,10 @@
 
 	/* See Section 7.3.2 */
 	memcpy(nonce, src_ext_addr, IEEE802154_EXT_ADDR_LENGTH);
-	nonce[8] = (uint8_t)(frame_counter >> 24);
-	nonce[9] = (uint8_t)(frame_counter >> 16);
-	nonce[10] = (uint8_t)(frame_counter >> 8);
-	nonce[11] = (uint8_t)frame_counter;
+	nonce[8] = (u8_t)(frame_counter >> 24);
+	nonce[9] = (u8_t)(frame_counter >> 16);
+	nonce[10] = (u8_t)(frame_counter >> 8);
+	nonce[11] = (u8_t)frame_counter;
 	nonce[12] = sec_ctx->level;
 
 	pkt.in_buf = decrypt_payload_len ? frame + auth_payload_len : NULL;
@@ -108,14 +108,14 @@
 }
 
 bool ieee802154_encrypt_auth(struct ieee802154_security_ctx *sec_ctx,
-			     uint8_t *frame,
-			     uint8_t auth_payload_len,
-			     uint8_t encrypt_payload_len,
-			     uint8_t *src_ext_addr)
+			     u8_t *frame,
+			     u8_t auth_payload_len,
+			     u8_t encrypt_payload_len,
+			     u8_t *src_ext_addr)
 {
 	struct cipher_aead_pkt apkt;
 	struct cipher_pkt pkt;
-	uint8_t nonce[13];
+	u8_t nonce[13];
 	int ret;
 
 	if (!sec_ctx || sec_ctx->level == IEEE802154_SECURITY_LEVEL_NONE) {
@@ -124,10 +124,10 @@
 
 	/* See Section 7.3.2 */
 	memcpy(nonce, src_ext_addr, IEEE802154_EXT_ADDR_LENGTH);
-	nonce[8] = (uint8_t)(sec_ctx->frame_counter >> 24);
-	nonce[9] = (uint8_t)(sec_ctx->frame_counter >> 16);
-	nonce[10] = (uint8_t)(sec_ctx->frame_counter >> 8);
-	nonce[11] = (uint8_t)sec_ctx->frame_counter;
+	nonce[8] = (u8_t)(sec_ctx->frame_counter >> 24);
+	nonce[9] = (u8_t)(sec_ctx->frame_counter >> 16);
+	nonce[10] = (u8_t)(sec_ctx->frame_counter >> 8);
+	nonce[11] = (u8_t)sec_ctx->frame_counter;
 	nonce[12] = sec_ctx->level;
 
 	pkt.in_buf = encrypt_payload_len ? frame + auth_payload_len : NULL;
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_security.h b/subsys/net/ip/l2/ieee802154/ieee802154_security.h
index 251c7a2..f8d8456 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_security.h
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_security.h
@@ -9,21 +9,21 @@
 #include <net/ieee802154.h>
 
 int ieee802154_security_setup_session(struct ieee802154_security_ctx *sec_ctx,
-				      uint8_t level, uint8_t key_mode,
-				      uint8_t *key, uint8_t key_len);
+				      u8_t level, u8_t key_mode,
+				      u8_t *key, u8_t key_len);
 
 bool ieee802154_decrypt_auth(struct ieee802154_security_ctx *sec_ctx,
-			     uint8_t *frame,
-			     uint8_t auth_payload_len,
-			     uint8_t decrypt_payload_len,
-			     uint8_t *src_ext_addr,
-			     uint32_t frame_counter);
+			     u8_t *frame,
+			     u8_t auth_payload_len,
+			     u8_t decrypt_payload_len,
+			     u8_t *src_ext_addr,
+			     u32_t frame_counter);
 
 bool ieee802154_encrypt_auth(struct ieee802154_security_ctx *sec_ctx,
-			     uint8_t *frame,
-			     uint8_t auth_payload_len,
-			     uint8_t encrypt_payload_len,
-			     uint8_t *src_ext_addr);
+			     u8_t *frame,
+			     u8_t auth_payload_len,
+			     u8_t encrypt_payload_len,
+			     u8_t *src_ext_addr);
 
 int ieee802154_security_init(struct ieee802154_security_ctx *sec_ctx);
 
diff --git a/subsys/net/ip/l2/ieee802154/ieee802154_shell.c b/subsys/net/ip/l2/ieee802154/ieee802154_shell.c
index 83541a1..222f244 100644
--- a/subsys/net/ip/l2/ieee802154/ieee802154_shell.c
+++ b/subsys/net/ip/l2/ieee802154/ieee802154_shell.c
@@ -46,7 +46,7 @@
 	return -EINVAL;
 }
 
-static inline void parse_extended_address(char *addr, uint8_t *ext_addr)
+static inline void parse_extended_address(char *addr, u8_t *ext_addr)
 {
 	char *p, *n;
 	int i = 0;
@@ -74,7 +74,7 @@
 		parse_extended_address(argv[2], params.addr);
 		params.len = IEEE802154_EXT_ADDR_LENGTH;
 	} else {
-		params.short_addr = (uint16_t) atoi(argv[2]);
+		params.short_addr = (u16_t) atoi(argv[2]);
 		params.len = IEEE802154_SHORT_ADDR_LENGTH;
 	}
 
@@ -106,15 +106,15 @@
 	return 0;
 }
 
-static inline uint32_t parse_channel_set(char *str_set)
+static inline u32_t parse_channel_set(char *str_set)
 {
-	uint32_t channel_set = 0;
+	u32_t channel_set = 0;
 	char *p, *n;
 
 	p = str_set;
 
 	do {
-		uint32_t chan;
+		u32_t chan;
 
 		n = strchr(p, ':');
 		if (n) {
@@ -149,7 +149,7 @@
 }
 
 static void scan_result_cb(struct net_mgmt_event_callback *cb,
-			   uint32_t mgmt_event, struct net_if *iface)
+			   u32_t mgmt_event, struct net_if *iface)
 {
 	printk("\nChannel: %u\tPAN ID: %u\tCoordinator Address: ",
 	       params.channel, params.pan_id);
@@ -160,7 +160,7 @@
 static int shell_cmd_scan(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint32_t scan_type;
+	u32_t scan_type;
 	int ret;
 
 	memset(&params, 0, sizeof(struct ieee802154_req_params));
@@ -212,10 +212,10 @@
 static int shell_cmd_set_chan(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint16_t channel = (uint16_t) atoi(argv[1]);
+	u16_t channel = (u16_t) atoi(argv[1]);
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_SET_CHANNEL, iface,
-		     &channel, sizeof(uint16_t))) {
+		     &channel, sizeof(u16_t))) {
 		printk("Could not set channel %u\n", channel);
 	} else {
 		printk("Channel %u set\n", channel);
@@ -227,10 +227,10 @@
 static int shell_cmd_get_chan(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint16_t channel;
+	u16_t channel;
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_GET_CHANNEL, iface,
-		     &channel, sizeof(uint16_t))) {
+		     &channel, sizeof(u16_t))) {
 		printk("Could not get channel\n");
 	} else {
 		printk("Channel %u\n", channel);
@@ -242,10 +242,10 @@
 static int shell_cmd_set_pan_id(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint16_t pan_id = (uint16_t) atoi(argv[1]);
+	u16_t pan_id = (u16_t) atoi(argv[1]);
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_SET_PAN_ID, iface,
-		     &pan_id, sizeof(uint16_t))) {
+		     &pan_id, sizeof(u16_t))) {
 		printk("Could not set PAN ID %u\n", pan_id);
 	} else {
 		printk("PAN ID %u set\n", pan_id);
@@ -257,10 +257,10 @@
 static int shell_cmd_get_pan_id(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint16_t pan_id;
+	u16_t pan_id;
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_GET_PAN_ID, iface,
-		     &pan_id, sizeof(uint16_t))) {
+		     &pan_id, sizeof(u16_t))) {
 		printk("Could not get PAN ID\n");
 	} else {
 		printk("PAN ID %u\n", pan_id);
@@ -272,7 +272,7 @@
 static int shell_cmd_set_ext_addr(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint8_t addr[IEEE802154_EXT_ADDR_LENGTH];
+	u8_t addr[IEEE802154_EXT_ADDR_LENGTH];
 
 	if (strlen(argv[2]) != 23) {
 		printk("23 characters needed\n");
@@ -294,7 +294,7 @@
 static int shell_cmd_get_ext_addr(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint8_t addr[IEEE802154_EXT_ADDR_LENGTH];
+	u8_t addr[IEEE802154_EXT_ADDR_LENGTH];
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_GET_EXT_ADDR, iface,
 		     addr, IEEE802154_EXT_ADDR_LENGTH)) {
@@ -320,10 +320,10 @@
 static int shell_cmd_set_short_addr(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint16_t short_addr = (uint16_t) atoi(argv[1]);
+	u16_t short_addr = (u16_t) atoi(argv[1]);
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_SET_SHORT_ADDR, iface,
-		     &short_addr, sizeof(uint16_t))) {
+		     &short_addr, sizeof(u16_t))) {
 		printk("Could not set short address %u\n", short_addr);
 	} else {
 		printk("Short address %u set\n", short_addr);
@@ -335,10 +335,10 @@
 static int shell_cmd_get_short_addr(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	uint16_t short_addr;
+	u16_t short_addr;
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_GET_SHORT_ADDR, iface,
-		     &short_addr, sizeof(uint16_t))) {
+		     &short_addr, sizeof(u16_t))) {
 		printk("Could not get short address\n");
 	} else {
 		printk("Short address %u\n", short_addr);
@@ -350,10 +350,10 @@
 static int shell_cmd_set_tx_power(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	int16_t tx_power = (int16_t) atoi(argv[1]);
+	s16_t tx_power = (s16_t) atoi(argv[1]);
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_SET_TX_POWER, iface,
-		     &tx_power, sizeof(int16_t))) {
+		     &tx_power, sizeof(s16_t))) {
 		printk("Could not set TX power %d\n", tx_power);
 	} else {
 		printk("TX power %d set\n", tx_power);
@@ -365,10 +365,10 @@
 static int shell_cmd_get_tx_power(int argc, char *argv[])
 {
 	struct net_if *iface = net_if_get_default();
-	int16_t tx_power;
+	s16_t tx_power;
 
 	if (net_mgmt(NET_REQUEST_IEEE802154_GET_SHORT_ADDR, iface,
-		     &tx_power, sizeof(int16_t))) {
+		     &tx_power, sizeof(s16_t))) {
 		printk("Could not get TX power\n");
 	} else {
 		printk("TX power (in dbm) %d\n", tx_power);
diff --git a/subsys/net/ip/nbr.c b/subsys/net/ip/nbr.c
index da555f8..5eac43f 100644
--- a/subsys/net/ip/nbr.c
+++ b/subsys/net/ip/nbr.c
@@ -178,7 +178,7 @@
 	return NULL;
 }
 
-struct net_linkaddr_storage *net_nbr_get_lladdr(uint8_t idx)
+struct net_linkaddr_storage *net_nbr_get_lladdr(u8_t idx)
 {
 	NET_ASSERT_INFO(idx < CONFIG_NET_IPV6_MAX_NEIGHBORS,
 			"idx %d >= max %d", idx,
diff --git a/subsys/net/ip/nbr.h b/subsys/net/ip/nbr.h
index 830726c..77865bc 100644
--- a/subsys/net/ip/nbr.h
+++ b/subsys/net/ip/nbr.h
@@ -31,7 +31,7 @@
 	struct net_linkaddr_storage lladdr;
 
 	/** Reference count. */
-	uint8_t ref;
+	u8_t ref;
 };
 
 #define NET_NBR_LLADDR_INIT(_name, _count)	\
@@ -45,25 +45,25 @@
  */
 struct net_nbr {
 	/** Reference count. */
-	uint8_t ref;
+	u8_t ref;
 
 	/** Link to ll address. This is the index into lladdr array.
 	 * The value NET_NBR_LLADDR_UNKNOWN tells that this neighbor
 	 * does not yet have lladdr linked to it.
 	 */
-	uint8_t idx;
+	u8_t idx;
 
 	/** Amount of data that this neighbor buffer can store. */
-	const uint16_t size;
+	const u16_t size;
 
 	/** Extra data size associated with this neighbor */
-	const uint16_t extra_data_size;
+	const u16_t extra_data_size;
 
 	/** Interface this neighbor is found */
 	struct net_if *iface;
 
 	/** Pointer to the start of data in the neighbor table. */
-	uint8_t *data;
+	u8_t *data;
 
 	/** Function to be called when the neighbor is removed. */
 	void (*const remove)(struct net_nbr *nbr);
@@ -71,15 +71,15 @@
 	/** Start of the data storage. Not to be accessed directly
 	 *  (the data pointer should be used instead).
 	 */
-	uint8_t __nbr[0] __net_nbr_align;
+	u8_t __nbr[0] __net_nbr_align;
 };
 
 /* This is an array of struct net_nbr + some additional data */
 #define NET_NBR_POOL_INIT(_name, _count, _size, _remove, _extra_size)	\
 	struct {							\
 		struct net_nbr nbr;					\
-		uint8_t data[ROUND_UP(_size, 4)] __net_nbr_align;	\
-		uint8_t extra[ROUND_UP(_extra_size, 4)] __net_nbr_align;\
+		u8_t data[ROUND_UP(_size, 4)] __net_nbr_align;	\
+		u8_t extra[ROUND_UP(_extra_size, 4)] __net_nbr_align;\
 	} _name[_count] = {						\
 		[0 ... (_count - 1)] = { .nbr = {			\
 			.idx = NET_NBR_LLADDR_UNKNOWN,			\
@@ -189,7 +189,7 @@
  * @param idx Link layer address index in ll table.
  * @return Pointer to link layer address storage, NULL if not found
  */
-struct net_linkaddr_storage *net_nbr_get_lladdr(uint8_t idx);
+struct net_linkaddr_storage *net_nbr_get_lladdr(u8_t idx);
 
 /**
  * @brief Clear table from all neighbors. After this the linking between
diff --git a/subsys/net/ip/net_context.c b/subsys/net/ip/net_context.c
index 47b6365..b097430 100644
--- a/subsys/net/ip/net_context.c
+++ b/subsys/net/ip/net_context.c
@@ -104,7 +104,7 @@
 #endif
 
 static int check_used_port(enum net_ip_protocol ip_proto,
-			   uint16_t local_port,
+			   u16_t local_port,
 			   const struct sockaddr *local_addr)
 
 {
@@ -143,11 +143,11 @@
 	return 0;
 }
 
-static uint16_t find_available_port(struct net_context *context,
+static u16_t find_available_port(struct net_context *context,
 				    const struct sockaddr *addr)
 {
 	if (!net_sin(addr)->sin_port) {
-		uint16_t local_port;
+		u16_t local_port;
 
 		do {
 			local_port = sys_rand32_get() | 0x8000;
@@ -798,7 +798,7 @@
 {
 	struct net_context *context = (struct net_context *)user_data;
 	enum net_verdict ret;
-	uint8_t tcp_flags;
+	u8_t tcp_flags;
 
 	NET_ASSERT(context && context->tcp);
 
@@ -986,13 +986,13 @@
 			const struct sockaddr *addr,
 			socklen_t addrlen,
 			net_context_connect_cb_t cb,
-			int32_t timeout,
+			s32_t timeout,
 			void *user_data)
 {
 #if defined(CONFIG_NET_TCP)
 	struct sockaddr *laddr = NULL;
 	struct sockaddr local_addr;
-	uint16_t lport, rport;
+	u16_t lport, rport;
 	int ret;
 #endif
 
@@ -1477,13 +1477,13 @@
 
 int net_context_accept(struct net_context *context,
 		       net_tcp_accept_cb_t cb,
-		       int32_t timeout,
+		       s32_t timeout,
 		       void *user_data)
 {
 #if defined(CONFIG_NET_TCP)
 	struct sockaddr local_addr;
 	struct sockaddr *laddr = NULL;
-	uint16_t lport = 0;
+	u16_t lport = 0;
 	int ret;
 #endif /* CONFIG_NET_TCP */
 
@@ -1579,7 +1579,7 @@
 static int send_data(struct net_context *context,
 		     struct net_pkt *pkt,
 		     net_context_send_cb_t cb,
-		     int32_t timeout,
+		     s32_t timeout,
 		     void *token,
 		     void *user_data)
 {
@@ -1653,7 +1653,7 @@
 		  const struct sockaddr *dst_addr,
 		  socklen_t addrlen,
 		  net_context_send_cb_t cb,
-		  int32_t timeout,
+		  s32_t timeout,
 		  void *token,
 		  void *user_data)
 {
@@ -1749,7 +1749,7 @@
 
 int net_context_send(struct net_pkt *pkt,
 		     net_context_send_cb_t cb,
-		     int32_t timeout,
+		     s32_t timeout,
 		     void *token,
 		     void *user_data)
 {
@@ -1795,7 +1795,7 @@
 		       const struct sockaddr *dst_addr,
 		       socklen_t addrlen,
 		       net_context_send_cb_t cb,
-		       int32_t timeout,
+		       s32_t timeout,
 		       void *token,
 		       void *user_data)
 {
@@ -1892,14 +1892,14 @@
 #if defined(CONFIG_NET_UDP)
 static int recv_udp(struct net_context *context,
 		    net_context_recv_cb_t cb,
-		    int32_t timeout,
+		    s32_t timeout,
 		    void *user_data)
 {
 	struct sockaddr local_addr = {
 		.family = net_context_get_family(context),
 	};
 	struct sockaddr *laddr = NULL;
-	uint16_t lport = 0;
+	u16_t lport = 0;
 	int ret;
 
 	ARG_UNUSED(timeout);
@@ -1955,7 +1955,7 @@
 
 int net_context_recv(struct net_context *context,
 		     net_context_recv_cb_t cb,
-		     int32_t timeout,
+		     s32_t timeout,
 		     void *user_data)
 {
 	NET_ASSERT(context);
diff --git a/subsys/net/ip/net_if.c b/subsys/net/ip/net_if.c
index a0d467f..7e15e5b 100644
--- a/subsys/net/ip/net_if.c
+++ b/subsys/net/ip/net_if.c
@@ -543,7 +543,7 @@
 }
 
 void net_if_ipv6_addr_update_lifetime(struct net_if_addr *ifaddr,
-				      uint32_t vlifetime)
+				      u32_t vlifetime)
 {
 	NET_DBG("Updating expire time of %s by %u secs",
 		net_sprint_ipv6_addr(&ifaddr->address.in6_addr),
@@ -575,7 +575,7 @@
 static inline void net_if_addr_init(struct net_if_addr *ifaddr,
 				    struct in6_addr *addr,
 				    enum net_addr_type addr_type,
-				    uint32_t vlifetime)
+				    u32_t vlifetime)
 {
 	ifaddr->is_used = true;
 	ifaddr->address.family = AF_INET6;
@@ -605,7 +605,7 @@
 struct net_if_addr *net_if_ipv6_addr_add(struct net_if *iface,
 					 struct in6_addr *addr,
 					 enum net_addr_type addr_type,
-					 uint32_t vlifetime)
+					 u32_t vlifetime)
 {
 	struct net_if_addr *ifaddr;
 	int i;
@@ -770,7 +770,7 @@
 
 static struct net_if_ipv6_prefix *ipv6_prefix_find(struct net_if *iface,
 						   struct in6_addr *prefix,
-						   uint8_t prefix_len)
+						   u8_t prefix_len)
 {
 	int i;
 
@@ -800,8 +800,8 @@
 }
 
 static void net_if_ipv6_prefix_init(struct net_if_ipv6_prefix *prefix,
-				    struct in6_addr *addr, uint8_t len,
-				    uint32_t lifetime)
+				    struct in6_addr *addr, u8_t len,
+				    u32_t lifetime)
 {
 	prefix->is_used = true;
 	prefix->len = len;
@@ -817,8 +817,8 @@
 
 struct net_if_ipv6_prefix *net_if_ipv6_prefix_add(struct net_if *iface,
 						  struct in6_addr *prefix,
-						  uint8_t len,
-						  uint32_t lifetime)
+						  u8_t len,
+						  u32_t lifetime)
 {
 	struct net_if_ipv6_prefix *if_prefix;
 	int i;
@@ -848,7 +848,7 @@
 }
 
 bool net_if_ipv6_prefix_rm(struct net_if *iface, struct in6_addr *addr,
-			   uint8_t len)
+			   u8_t len)
 {
 	int i;
 
@@ -876,7 +876,7 @@
 
 struct net_if_ipv6_prefix *net_if_ipv6_prefix_lookup(struct net_if *iface,
 						     struct in6_addr *addr,
-						     uint8_t len)
+						     u8_t len)
 {
 	int i;
 
@@ -924,7 +924,7 @@
 }
 
 void net_if_ipv6_prefix_set_timer(struct net_if_ipv6_prefix *prefix,
-				  uint32_t lifetime)
+				  u32_t lifetime)
 {
 	/* The maximum lifetime might be shorter than expected
 	 * because we have only 32-bit int to store the value and
@@ -932,7 +932,7 @@
 	 * all bits set means infinite and that value is never set
 	 * to timer.
 	 */
-	uint32_t timeout = lifetime * MSEC_PER_SEC;
+	u32_t timeout = lifetime * MSEC_PER_SEC;
 
 	NET_ASSERT(lifetime != 0xffffffff);
 
@@ -1015,7 +1015,7 @@
 }
 
 void net_if_ipv6_router_update_lifetime(struct net_if_router *router,
-					uint32_t lifetime)
+					u32_t lifetime)
 {
 	NET_DBG("Updating expire time of %s by %u secs",
 		net_sprint_ipv6_addr(&router->address.in6_addr),
@@ -1027,7 +1027,7 @@
 
 static inline void net_if_router_init(struct net_if_router *router,
 				      struct net_if *iface,
-				      struct in6_addr *addr, uint16_t lifetime)
+				      struct in6_addr *addr, u16_t lifetime)
 {
 	router->is_used = true;
 	router->iface = iface;
@@ -1055,7 +1055,7 @@
 
 struct net_if_router *net_if_ipv6_router_add(struct net_if *iface,
 					     struct in6_addr *addr,
-					     uint16_t lifetime)
+					     u16_t lifetime)
 {
 	int i;
 
@@ -1194,10 +1194,10 @@
 	return NULL;
 }
 
-static inline uint8_t get_length(struct in6_addr *src, struct in6_addr *dst)
+static inline u8_t get_length(struct in6_addr *src, struct in6_addr *dst)
 {
-	uint8_t j, k, xor;
-	uint8_t len = 0;
+	u8_t j, k, xor;
+	u8_t len = 0;
 
 	for (j = 0; j < 16; j++) {
 		if (src->s6_addr[j] == dst->s6_addr[j]) {
@@ -1232,10 +1232,10 @@
 
 static inline struct in6_addr *net_if_ipv6_get_best_match(struct net_if *iface,
 							  struct in6_addr *dst,
-							  uint8_t *best_so_far)
+							  u8_t *best_so_far)
 {
 	struct in6_addr *src = NULL;
-	uint8_t i, len;
+	u8_t i, len;
 
 	for (i = 0; i < NET_IF_MAX_IPV6_ADDR; i++) {
 		if (!is_proper_ipv6_address(&iface->ipv6.unicast[i])) {
@@ -1257,7 +1257,7 @@
 						   struct in6_addr *dst)
 {
 	struct in6_addr *src = NULL;
-	uint8_t best_match = 0;
+	u8_t best_match = 0;
 	struct net_if *iface;
 
 	if (!net_is_ipv6_ll_addr(dst) && !net_is_ipv6_addr_mcast(dst)) {
@@ -1305,7 +1305,7 @@
 	return src;
 }
 
-uint32_t net_if_ipv6_calc_reachable_time(struct net_if *iface)
+u32_t net_if_ipv6_calc_reachable_time(struct net_if *iface)
 {
 	return MIN_RANDOM_FACTOR * iface->ipv6.base_reachable_time +
 		sys_rand32_get() %
@@ -1342,7 +1342,7 @@
 struct net_if_router *net_if_ipv4_router_add(struct net_if *iface,
 					     struct in_addr *addr,
 					     bool is_default,
-					     uint16_t lifetime)
+					     u16_t lifetime)
 {
 	int i;
 
@@ -1382,7 +1382,7 @@
 bool net_if_ipv4_addr_mask_cmp(struct net_if *iface,
 			       struct in_addr *addr)
 {
-	uint32_t subnet = ntohl(addr->s_addr[0]) &
+	u32_t subnet = ntohl(addr->s_addr[0]) &
 			ntohl(iface->ipv4.netmask.s_addr[0]);
 	int i;
 
@@ -1451,7 +1451,7 @@
 struct net_if_addr *net_if_ipv4_addr_add(struct net_if *iface,
 					 struct in_addr *addr,
 					 enum net_addr_type addr_type,
-					 uint32_t vlifetime)
+					 u32_t vlifetime)
 {
 	struct net_if_addr *ifaddr;
 	int i;
@@ -1550,7 +1550,7 @@
 	}
 }
 
-struct net_if *net_if_get_by_index(uint8_t index)
+struct net_if *net_if_get_by_index(u8_t index)
 {
 	if (&__net_if_start[index] >= __net_if_end) {
 		NET_DBG("Index %d is too large", index);
@@ -1560,7 +1560,7 @@
 	return &__net_if_start[index];
 }
 
-uint8_t net_if_get_by_iface(struct net_if *iface)
+u8_t net_if_get_by_iface(struct net_if *iface)
 {
 	NET_ASSERT(iface >= __net_if_start && iface < __net_if_end);
 
diff --git a/subsys/net/ip/net_mgmt.c b/subsys/net/ip/net_mgmt.c
index cffd93d..cf49a08 100644
--- a/subsys/net/ip/net_mgmt.c
+++ b/subsys/net/ip/net_mgmt.c
@@ -18,7 +18,7 @@
 #include <net/net_mgmt.h>
 
 struct mgmt_event_entry {
-	uint32_t event;
+	u32_t event;
 	struct net_if *iface;
 };
 
@@ -32,12 +32,12 @@
 NET_STACK_DEFINE(MGMT, mgmt_stack, CONFIG_NET_MGMT_EVENT_STACK_SIZE,
 		 CONFIG_NET_MGMT_EVENT_STACK_SIZE);
 static struct mgmt_event_entry events[CONFIG_NET_MGMT_EVENT_QUEUE_SIZE];
-static uint32_t global_event_mask;
+static u32_t global_event_mask;
 static sys_slist_t event_callbacks;
-static uint16_t in_event;
-static uint16_t out_event;
+static u16_t in_event;
+static u16_t out_event;
 
-static inline void mgmt_push_event(uint32_t mgmt_event, struct net_if *iface)
+static inline void mgmt_push_event(u32_t mgmt_event, struct net_if *iface)
 {
 	events[in_event].event = mgmt_event;
 	events[in_event].iface = iface;
@@ -49,7 +49,7 @@
 	}
 
 	if (in_event == out_event) {
-		uint16_t o_idx = out_event + 1;
+		u16_t o_idx = out_event + 1;
 
 		if (o_idx == CONFIG_NET_MGMT_EVENT_QUEUE_SIZE) {
 			o_idx = 0;
@@ -63,7 +63,7 @@
 
 static inline struct mgmt_event_entry *mgmt_pop_event(void)
 {
-	uint16_t o_idx;
+	u16_t o_idx;
 
 	if (!events[out_event].event) {
 		return NULL;
@@ -85,7 +85,7 @@
 	mgmt_event->iface = NULL;
 }
 
-static inline void mgmt_add_event_mask(uint32_t event_mask)
+static inline void mgmt_add_event_mask(u32_t event_mask)
 {
 	global_event_mask |= event_mask;
 }
@@ -101,7 +101,7 @@
 	}
 }
 
-static inline bool mgmt_is_event_handled(uint32_t mgmt_event)
+static inline bool mgmt_is_event_handled(u32_t mgmt_event)
 {
 	return ((mgmt_event & global_event_mask) == mgmt_event);
 }
@@ -193,8 +193,8 @@
 }
 
 static int mgmt_event_wait_call(struct net_if *iface,
-				uint32_t mgmt_event_mask,
-				uint32_t *raised_event,
+				u32_t mgmt_event_mask,
+				u32_t *raised_event,
 				struct net_if **event_iface,
 				int timeout)
 {
@@ -251,7 +251,7 @@
 	mgmt_rebuild_global_event_mask();
 }
 
-void net_mgmt_event_notify(uint32_t mgmt_event, struct net_if *iface)
+void net_mgmt_event_notify(u32_t mgmt_event, struct net_if *iface)
 {
 	if (mgmt_is_event_handled(mgmt_event)) {
 		NET_DBG("Notifying Event layer %u code %u type %u",
@@ -264,8 +264,8 @@
 	}
 }
 
-int net_mgmt_event_wait(uint32_t mgmt_event_mask,
-			uint32_t *raised_event,
+int net_mgmt_event_wait(u32_t mgmt_event_mask,
+			u32_t *raised_event,
 			struct net_if **iface,
 			int timeout)
 {
@@ -274,8 +274,8 @@
 }
 
 int net_mgmt_event_wait_on_iface(struct net_if *iface,
-				 uint32_t mgmt_event_mask,
-				 uint32_t *raised_event,
+				 u32_t mgmt_event_mask,
+				 u32_t *raised_event,
 				 int timeout)
 {
 	NET_ASSERT(NET_MGMT_ON_IFACE(mgmt_event_mask));
diff --git a/subsys/net/ip/net_pkt.c b/subsys/net/ip/net_pkt.c
index da46595..97b8e91 100644
--- a/subsys/net/ip/net_pkt.c
+++ b/subsys/net/ip/net_pkt.c
@@ -106,9 +106,9 @@
 	};
 	const char *func_alloc;
 	const char *func_free;
-	uint16_t line_alloc;
-	uint16_t line_free;
-	uint8_t in_use;
+	u16_t line_alloc;
+	u16_t line_free;
+	u8_t in_use;
 	bool is_pkt;
 };
 
@@ -234,7 +234,7 @@
 	return "EDATA";
 }
 
-static inline int16_t get_frees(struct net_buf_pool *pool)
+static inline s16_t get_frees(struct net_buf_pool *pool)
 {
 	return pool->avail_count;
 }
@@ -289,14 +289,14 @@
 }
 
 struct net_pkt *net_pkt_get_reserve_debug(struct k_mem_slab *slab,
-					  uint16_t reserve_head,
-					  int32_t timeout,
+					  u16_t reserve_head,
+					  s32_t timeout,
 					  const char *caller,
 					  int line)
 #else /* CONFIG_NET_DEBUG_NET_PKT */
 struct net_pkt *net_pkt_get_reserve(struct k_mem_slab *slab,
-				    uint16_t reserve_head,
-				    int32_t timeout)
+				    u16_t reserve_head,
+				    s32_t timeout)
 #endif /* CONFIG_NET_DEBUG_NET_PKT */
 {
 	struct net_pkt *pkt;
@@ -331,14 +331,14 @@
 
 #if defined(CONFIG_NET_DEBUG_NET_PKT)
 struct net_buf *net_pkt_get_reserve_data_debug(struct net_buf_pool *pool,
-					       uint16_t reserve_head,
-					       int32_t timeout,
+					       u16_t reserve_head,
+					       s32_t timeout,
 					       const char *caller,
 					       int line)
 #else /* CONFIG_NET_DEBUG_NET_PKT */
 struct net_buf *net_pkt_get_reserve_data(struct net_buf_pool *pool,
-					 uint16_t reserve_head,
-					 int32_t timeout)
+					 u16_t reserve_head,
+					 s32_t timeout)
 #endif /* CONFIG_NET_DEBUG_NET_PKT */
 {
 	struct net_buf *frag;
@@ -378,11 +378,11 @@
  */
 #if defined(CONFIG_NET_DEBUG_NET_PKT)
 struct net_buf *net_pkt_get_frag_debug(struct net_pkt *pkt,
-				       int32_t timeout,
+				       s32_t timeout,
 				       const char *caller, int line)
 #else
 struct net_buf *net_pkt_get_frag(struct net_pkt *pkt,
-				 int32_t timeout)
+				 s32_t timeout)
 #endif
 {
 #if defined(CONFIG_NET_CONTEXT_NET_PKT_POOL)
@@ -422,32 +422,32 @@
 }
 
 #if defined(CONFIG_NET_DEBUG_NET_PKT)
-struct net_pkt *net_pkt_get_reserve_rx_debug(uint16_t reserve_head,
-					     int32_t timeout,
+struct net_pkt *net_pkt_get_reserve_rx_debug(u16_t reserve_head,
+					     s32_t timeout,
 					     const char *caller, int line)
 {
 	return net_pkt_get_reserve_debug(&rx_pkts, reserve_head, timeout,
 					 caller, line);
 }
 
-struct net_pkt *net_pkt_get_reserve_tx_debug(uint16_t reserve_head,
-					     int32_t timeout,
+struct net_pkt *net_pkt_get_reserve_tx_debug(u16_t reserve_head,
+					     s32_t timeout,
 					     const char *caller, int line)
 {
 	return net_pkt_get_reserve_debug(&tx_pkts, reserve_head, timeout,
 					 caller, line);
 }
 
-struct net_buf *net_pkt_get_reserve_rx_data_debug(uint16_t reserve_head,
-						  int32_t timeout,
+struct net_buf *net_pkt_get_reserve_rx_data_debug(u16_t reserve_head,
+						  s32_t timeout,
 						  const char *caller, int line)
 {
 	return net_pkt_get_reserve_data_debug(&rx_bufs, reserve_head,
 					      timeout, caller, line);
 }
 
-struct net_buf *net_pkt_get_reserve_tx_data_debug(uint16_t reserve_head,
-						  int32_t timeout,
+struct net_buf *net_pkt_get_reserve_tx_data_debug(u16_t reserve_head,
+						  s32_t timeout,
 						  const char *caller, int line)
 {
 	return net_pkt_get_reserve_data_debug(&tx_bufs, reserve_head,
@@ -456,26 +456,26 @@
 
 #else /* CONFIG_NET_DEBUG_NET_PKT */
 
-struct net_pkt *net_pkt_get_reserve_rx(uint16_t reserve_head,
-				       int32_t timeout)
+struct net_pkt *net_pkt_get_reserve_rx(u16_t reserve_head,
+				       s32_t timeout)
 {
 	return net_pkt_get_reserve(&rx_pkts, reserve_head, timeout);
 }
 
-struct net_pkt *net_pkt_get_reserve_tx(uint16_t reserve_head,
-				       int32_t timeout)
+struct net_pkt *net_pkt_get_reserve_tx(u16_t reserve_head,
+				       s32_t timeout)
 {
 	return net_pkt_get_reserve(&tx_pkts, reserve_head, timeout);
 }
 
-struct net_buf *net_pkt_get_reserve_rx_data(uint16_t reserve_head,
-					    int32_t timeout)
+struct net_buf *net_pkt_get_reserve_rx_data(u16_t reserve_head,
+					    s32_t timeout)
 {
 	return net_pkt_get_reserve_data(&rx_bufs, reserve_head, timeout);
 }
 
-struct net_buf *net_pkt_get_reserve_tx_data(uint16_t reserve_head,
-					    int32_t timeout)
+struct net_buf *net_pkt_get_reserve_tx_data(u16_t reserve_head,
+					    s32_t timeout)
 {
 	return net_pkt_get_reserve_data(&tx_bufs, reserve_head, timeout);
 }
@@ -486,12 +486,12 @@
 #if defined(CONFIG_NET_DEBUG_NET_PKT)
 static struct net_pkt *net_pkt_get_debug(struct k_mem_slab *slab,
 					 struct net_context *context,
-					 int32_t timeout,
+					 s32_t timeout,
 					 const char *caller, int line)
 #else
 static struct net_pkt *net_pkt_get(struct k_mem_slab *slab,
 				   struct net_context *context,
-				   int32_t timeout)
+				   s32_t timeout)
 #endif /* CONFIG_NET_DEBUG_NET_PKT */
 {
 	struct in6_addr *addr6 = NULL;
@@ -534,12 +534,12 @@
 #if defined(CONFIG_NET_DEBUG_NET_PKT)
 static struct net_buf *_pkt_get_data_debug(struct net_buf_pool *pool,
 					   struct net_context *context,
-					   int32_t timeout,
+					   s32_t timeout,
 					   const char *caller, int line)
 #else
 static struct net_buf *_pkt_get_data(struct net_buf_pool *pool,
 				     struct net_context *context,
-				     int32_t timeout)
+				     s32_t timeout)
 #endif /* CONFIG_NET_DEBUG_NET_PKT */
 {
 	struct in6_addr *addr6 = NULL;
@@ -597,14 +597,14 @@
 
 #if defined(CONFIG_NET_DEBUG_NET_PKT)
 struct net_pkt *net_pkt_get_rx_debug(struct net_context *context,
-				     int32_t timeout,
+				     s32_t timeout,
 				     const char *caller, int line)
 {
 	return net_pkt_get_debug(&rx_pkts, context, timeout, caller, line);
 }
 
 struct net_pkt *net_pkt_get_tx_debug(struct net_context *context,
-				     int32_t timeout,
+				     s32_t timeout,
 				     const char *caller, int line)
 {
 	struct k_mem_slab *slab = get_tx_slab(context);
@@ -614,7 +614,7 @@
 }
 
 struct net_buf *net_pkt_get_data_debug(struct net_context *context,
-				       int32_t timeout,
+				       s32_t timeout,
 				       const char *caller, int line)
 {
 	struct net_buf_pool *pool = get_data_pool(context);
@@ -625,14 +625,14 @@
 
 #else /* CONFIG_NET_DEBUG_NET_PKT */
 
-struct net_pkt *net_pkt_get_rx(struct net_context *context, int32_t timeout)
+struct net_pkt *net_pkt_get_rx(struct net_context *context, s32_t timeout)
 {
 	NET_ASSERT_INFO(context, "RX context not set");
 
 	return net_pkt_get(&rx_pkts, context, timeout);
 }
 
-struct net_pkt *net_pkt_get_tx(struct net_context *context, int32_t timeout)
+struct net_pkt *net_pkt_get_tx(struct net_context *context, s32_t timeout)
 {
 	struct k_mem_slab *slab;
 
@@ -643,7 +643,7 @@
 	return net_pkt_get(slab ? slab : &tx_pkts, context, timeout);
 }
 
-struct net_buf *net_pkt_get_data(struct net_context *context, int32_t timeout)
+struct net_buf *net_pkt_get_data(struct net_context *context, s32_t timeout)
 {
 	struct net_buf_pool *pool;
 
@@ -879,10 +879,10 @@
 }
 
 struct net_buf *net_pkt_copy(struct net_pkt *pkt, size_t amount,
-			     size_t reserve, int32_t timeout)
+			     size_t reserve, s32_t timeout)
 {
 	struct net_buf *frag, *first, *orig;
-	uint8_t *orig_data;
+	u8_t *orig_data;
 	size_t orig_len;
 
 	orig = pkt->frags;
@@ -977,10 +977,10 @@
 }
 
 int net_frag_linear_copy(struct net_buf *dst, struct net_buf *src,
-			 uint16_t offset, uint16_t len)
+			 u16_t offset, u16_t len)
 {
-	uint16_t to_copy;
-	uint16_t copied;
+	u16_t to_copy;
+	u16_t copied;
 
 	if (dst->size < len) {
 		return -ENOMEM;
@@ -1080,13 +1080,13 @@
  * the buffer. It assumes that the buffer has at least one fragment.
  */
 static inline bool net_pkt_append_bytes(struct net_pkt *pkt,
-					const uint8_t *value,
-					uint16_t len, int32_t timeout)
+					const u8_t *value,
+					u16_t len, s32_t timeout)
 {
 	struct net_buf *frag = net_buf_frag_last(pkt->frags);
 
 	do {
-		uint16_t count = min(len, net_buf_tailroom(frag));
+		u16_t count = min(len, net_buf_tailroom(frag));
 		void *data = net_buf_add(frag, count);
 
 		memcpy(data, value, count);
@@ -1108,8 +1108,8 @@
 	return false;
 }
 
-bool net_pkt_append(struct net_pkt *pkt, uint16_t len, const uint8_t *data,
-		    int32_t timeout)
+bool net_pkt_append(struct net_pkt *pkt, u16_t len, const u8_t *data,
+		    s32_t timeout)
 {
 	struct net_buf *frag;
 
@@ -1134,9 +1134,9 @@
  * next fragment and set offset = 0.
  */
 static inline struct net_buf *net_frag_read_byte(struct net_buf *frag,
-						 uint16_t offset,
-						 uint16_t *pos,
-						 uint8_t *data)
+						 u16_t offset,
+						 u16_t *pos,
+						 u8_t *data)
 {
 	if (data) {
 		*data = frag->data[offset];
@@ -1157,7 +1157,7 @@
  * if given offset is more than current fragment length.
  */
 static inline struct net_buf *adjust_offset(struct net_buf *frag,
-					    uint16_t offset, uint16_t *pos)
+					    u16_t offset, u16_t *pos)
 {
 	if (!frag) {
 		NET_ERR("Invalid fragment");
@@ -1184,10 +1184,10 @@
 	return NULL;
 }
 
-struct net_buf *net_frag_read(struct net_buf *frag, uint16_t offset,
-			     uint16_t *pos, uint16_t len, uint8_t *data)
+struct net_buf *net_frag_read(struct net_buf *frag, u16_t offset,
+			     u16_t *pos, u16_t len, u8_t *data)
 {
-	uint16_t copy = 0;
+	u16_t copy = 0;
 
 	frag = adjust_offset(frag, offset, pos);
 	if (!frag) {
@@ -1217,26 +1217,26 @@
 	return NULL;
 }
 
-struct net_buf *net_frag_read_be16(struct net_buf *frag, uint16_t offset,
-				   uint16_t *pos, uint16_t *value)
+struct net_buf *net_frag_read_be16(struct net_buf *frag, u16_t offset,
+				   u16_t *pos, u16_t *value)
 {
 	struct net_buf *ret_frag;
-	uint8_t v16[2];
+	u8_t v16[2];
 
-	ret_frag = net_frag_read(frag, offset, pos, sizeof(uint16_t), v16);
+	ret_frag = net_frag_read(frag, offset, pos, sizeof(u16_t), v16);
 
 	*value = v16[0] << 8 | v16[1];
 
 	return ret_frag;
 }
 
-struct net_buf *net_frag_read_be32(struct net_buf *frag, uint16_t offset,
-				   uint16_t *pos, uint32_t *value)
+struct net_buf *net_frag_read_be32(struct net_buf *frag, u16_t offset,
+				   u16_t *pos, u32_t *value)
 {
 	struct net_buf *ret_frag;
-	uint8_t v32[4];
+	u8_t v32[4];
 
-	ret_frag = net_frag_read(frag, offset, pos, sizeof(uint32_t), v32);
+	ret_frag = net_frag_read(frag, offset, pos, sizeof(u32_t), v32);
 
 	*value = v32[0] << 24 | v32[1] << 16 | v32[2] << 8 | v32[3];
 
@@ -1245,7 +1245,7 @@
 
 static inline struct net_buf *check_and_create_data(struct net_pkt *pkt,
 						    struct net_buf *data,
-						    int32_t timeout)
+						    s32_t timeout)
 {
 	struct net_buf *frag;
 
@@ -1265,11 +1265,11 @@
 
 static inline struct net_buf *adjust_write_offset(struct net_pkt *pkt,
 						  struct net_buf *frag,
-						  uint16_t offset,
-						  uint16_t *pos,
-						  int32_t timeout)
+						  u16_t offset,
+						  u16_t *pos,
+						  s32_t timeout)
 {
-	uint16_t tailroom;
+	u16_t tailroom;
 
 	do {
 		frag = check_and_create_data(pkt, frag, timeout);
@@ -1350,9 +1350,9 @@
 }
 
 struct net_buf *net_pkt_write(struct net_pkt *pkt, struct net_buf *frag,
-			      uint16_t offset, uint16_t *pos,
-			      uint16_t len, uint8_t *data,
-			      int32_t timeout)
+			      u16_t offset, u16_t *pos,
+			      u16_t len, u8_t *data,
+			      s32_t timeout)
 {
 	if (!pkt) {
 		NET_ERR("Invalid packet");
@@ -1366,8 +1366,8 @@
 	}
 
 	do {
-		uint16_t space = frag->size - net_buf_headroom(frag) - offset;
-		uint16_t count = min(len, space);
+		u16_t space = frag->size - net_buf_headroom(frag) - offset;
+		u16_t count = min(len, space);
 		int size_to_add;
 
 		memcpy(frag->data + offset, data, count);
@@ -1408,14 +1408,14 @@
 }
 
 static inline bool insert_data(struct net_pkt *pkt, struct net_buf *frag,
-			       struct net_buf *temp, uint16_t offset,
-			       uint16_t len, uint8_t *data,
-			       int32_t timeout)
+			       struct net_buf *temp, u16_t offset,
+			       u16_t len, u8_t *data,
+			       s32_t timeout)
 {
 	struct net_buf *insert;
 
 	do {
-		uint16_t count = min(len, net_buf_tailroom(frag));
+		u16_t count = min(len, net_buf_tailroom(frag));
 
 		/* Copy insert data */
 		memcpy(frag->data + offset, data, count);
@@ -1456,8 +1456,8 @@
 }
 
 static inline struct net_buf *adjust_insert_offset(struct net_buf *frag,
-						   uint16_t offset,
-						   uint16_t *pos)
+						   u16_t offset,
+						   u16_t *pos)
 {
 	if (!frag) {
 		NET_ERR("Invalid fragment");
@@ -1493,11 +1493,11 @@
 }
 
 bool net_pkt_insert(struct net_pkt *pkt, struct net_buf *frag,
-		    uint16_t offset, uint16_t len, uint8_t *data,
-		    int32_t timeout)
+		    u16_t offset, u16_t len, u8_t *data,
+		    s32_t timeout)
 {
 	struct net_buf *temp = NULL;
-	uint16_t bytes;
+	u16_t bytes;
 
 	if (!pkt) {
 		return false;
@@ -1528,8 +1528,8 @@
 }
 
 int net_pkt_split(struct net_pkt *pkt, struct net_buf *orig_frag,
-		  uint16_t len, struct net_buf **fragA,
-		  struct net_buf **fragB, int32_t timeout)
+		  u16_t len, struct net_buf **fragA,
+		  struct net_buf **fragB, s32_t timeout)
 {
 	if (!pkt || !orig_frag) {
 		return -EINVAL;
diff --git a/subsys/net/ip/net_private.h b/subsys/net/ip/net_private.h
index 93e846b..5d441e9 100644
--- a/subsys/net/ip/net_private.h
+++ b/subsys/net/ip/net_private.h
@@ -25,41 +25,41 @@
 
 #if defined(CONFIG_NET_IPV6_FRAGMENT)
 int net_ipv6_send_fragmented_pkt(struct net_if *iface, struct net_pkt *pkt,
-				 uint16_t pkt_len);
+				 u16_t pkt_len);
 #endif
 
 extern const char *net_proto2str(enum net_ip_protocol proto);
-extern char *net_byte_to_hex(char *ptr, uint8_t byte, char base, bool pad);
-extern char *net_sprint_ll_addr_buf(const uint8_t *ll, uint8_t ll_len,
+extern char *net_byte_to_hex(char *ptr, u8_t byte, char base, bool pad);
+extern char *net_sprint_ll_addr_buf(const u8_t *ll, u8_t ll_len,
 				    char *buf, int buflen);
-extern uint16_t net_calc_chksum(struct net_pkt *pkt, uint8_t proto);
+extern u16_t net_calc_chksum(struct net_pkt *pkt, u8_t proto);
 
 #if defined(CONFIG_NET_IPV4)
-extern uint16_t net_calc_chksum_ipv4(struct net_pkt *pkt);
+extern u16_t net_calc_chksum_ipv4(struct net_pkt *pkt);
 #endif /* CONFIG_NET_IPV4 */
 
-static inline uint16_t net_calc_chksum_icmpv6(struct net_pkt *pkt)
+static inline u16_t net_calc_chksum_icmpv6(struct net_pkt *pkt)
 {
 	return net_calc_chksum(pkt, IPPROTO_ICMPV6);
 }
 
-static inline uint16_t net_calc_chksum_icmpv4(struct net_pkt *pkt)
+static inline u16_t net_calc_chksum_icmpv4(struct net_pkt *pkt)
 {
 	return net_calc_chksum(pkt, IPPROTO_ICMP);
 }
 
-static inline uint16_t net_calc_chksum_udp(struct net_pkt *pkt)
+static inline u16_t net_calc_chksum_udp(struct net_pkt *pkt)
 {
 	return net_calc_chksum(pkt, IPPROTO_UDP);
 }
 
-static inline uint16_t net_calc_chksum_tcp(struct net_pkt *pkt)
+static inline u16_t net_calc_chksum_tcp(struct net_pkt *pkt)
 {
 	return net_calc_chksum(pkt, IPPROTO_TCP);
 }
 
 #if NET_LOG_ENABLED > 0
-static inline char *net_sprint_ll_addr(const uint8_t *ll, uint8_t ll_len)
+static inline char *net_sprint_ll_addr(const u8_t *ll, u8_t ll_len)
 {
 	static char buf[sizeof("xx:xx:xx:xx:xx:xx:xx:xx")];
 
@@ -110,7 +110,7 @@
 	return NULL;
 }
 
-static inline void net_hexdump(const char *str, const uint8_t *packet,
+static inline void net_hexdump(const char *str, const u8_t *packet,
 			       size_t length)
 {
 	int n = 0;
@@ -182,7 +182,7 @@
 
 #else /* NET_LOG_ENABLED */
 
-static inline char *net_sprint_ll_addr(const uint8_t *ll, uint8_t ll_len)
+static inline char *net_sprint_ll_addr(const u8_t *ll, u8_t ll_len)
 {
 	ARG_UNUSED(ll);
 	ARG_UNUSED(ll_len);
diff --git a/subsys/net/ip/net_shell.c b/subsys/net/ip/net_shell.c
index bf9f51c..576eb27 100644
--- a/subsys/net/ip/net_shell.c
+++ b/subsys/net/ip/net_shell.c
@@ -530,7 +530,7 @@
 static void tcp_cb(struct net_tcp *tcp, void *user_data)
 {
 	int *count = user_data;
-	uint16_t recv_mss = net_tcp_get_recv_mss(tcp);
+	u16_t recv_mss = net_tcp_get_recv_mss(tcp);
 
 	printk("%p    %5u     %5u %10u %10u %5u   %s\n",
 	       tcp,
@@ -769,7 +769,7 @@
 	printk("Pending queries:\n");
 
 	for (i = 0; i < CONFIG_DNS_NUM_CONCUR_QUERIES; i++) {
-		int32_t remaining;
+		s32_t remaining;
 
 		if (!ctx->queries[i].cb) {
 			continue;
@@ -1446,7 +1446,7 @@
 	}
 }
 
-static int tcp_connect(char *host, uint16_t port, struct net_context **ctx)
+static int tcp_connect(char *host, u16_t port, struct net_context **ctx)
 {
 	struct sockaddr addr;
 	struct sockaddr myaddr;
@@ -1542,7 +1542,7 @@
 		if (!strcmp(argv[arg], "connect")) {
 			/* tcp connect <ip> port */
 			char *ip;
-			uint16_t port;
+			u16_t port;
 
 			if (tcp_ctx && net_context_is_used(tcp_ctx)) {
 				printk("Already connected\n");
diff --git a/subsys/net/ip/net_stats.c b/subsys/net/ip/net_stats.c
index 5ed71a6..7b4f700 100644
--- a/subsys/net/ip/net_stats.c
+++ b/subsys/net/ip/net_stats.c
@@ -25,12 +25,12 @@
 
 void net_print_statistics(void)
 {
-	static int64_t next_print;
-	int64_t curr = k_uptime_get();
+	static s64_t next_print;
+	s64_t curr = k_uptime_get();
 
 	if (!next_print || (next_print < curr &&
 	    (!((curr - next_print) > PRINT_STATISTICS_INTERVAL)))) {
-		int64_t new_print;
+		s64_t new_print;
 
 #if defined(CONFIG_NET_STATISTICS_IPV6)
 		NET_INFO("IPv6 recv      %d\tsent\t%d\tdrop\t%d\tforwarded\t%d",
@@ -133,7 +133,7 @@
 
 #if defined(CONFIG_NET_STATISTICS_USER_API)
 
-static int net_stats_get(uint32_t mgmt_request, struct net_if *iface,
+static int net_stats_get(u32_t mgmt_request, struct net_if *iface,
 			 void *data, size_t len)
 {
 	size_t len_chk = 0;
diff --git a/subsys/net/ip/net_stats.h b/subsys/net/ip/net_stats.h
index 5320050..a9d6cd0 100644
--- a/subsys/net/ip/net_stats.h
+++ b/subsys/net/ip/net_stats.h
@@ -32,12 +32,12 @@
 	net_stats.ip_errors.vhlerr++;
 }
 
-static inline void net_stats_update_bytes_recv(uint32_t bytes)
+static inline void net_stats_update_bytes_recv(u32_t bytes)
 {
 	net_stats.bytes.received += bytes;
 }
 
-static inline void net_stats_update_bytes_sent(uint32_t bytes)
+static inline void net_stats_update_bytes_sent(u32_t bytes)
 {
 	net_stats.bytes.sent += bytes;
 }
diff --git a/subsys/net/ip/route.c b/subsys/net/ip/route.c
index e188c04..6018741 100644
--- a/subsys/net/ip/route.c
+++ b/subsys/net/ip/route.c
@@ -134,7 +134,7 @@
 			continue;
 		}
 
-		if (nbr->data == (uint8_t *)route) {
+		if (nbr->data == (u8_t *)route) {
 			if (!nbr->ref) {
 				return NULL;
 			}
@@ -183,7 +183,7 @@
 
 static struct net_nbr *nbr_new(struct net_if *iface,
 			       struct in6_addr *addr,
-			       uint8_t prefix_len)
+			       u8_t prefix_len)
 {
 	struct net_nbr *nbr = net_nbr_get(&net_nbr_routes.table);
 
@@ -264,7 +264,7 @@
 					 struct in6_addr *dst)
 {
 	struct net_route_entry *route, *found = NULL;
-	uint8_t longest_match = 0;
+	u8_t longest_match = 0;
 	int i;
 
 	for (i = 0; i < CONFIG_NET_MAX_ROUTES && longest_match < 128; i++) {
@@ -281,8 +281,8 @@
 		route = net_route_data(nbr);
 
 		if (route->prefix_len >= longest_match &&
-		    net_is_ipv6_prefix((uint8_t *)dst,
-				       (uint8_t *)&route->addr,
+		    net_is_ipv6_prefix((u8_t *)dst,
+				       (u8_t *)&route->addr,
 				       route->prefix_len)) {
 			found = route;
 			longest_match = route->prefix_len;
@@ -300,7 +300,7 @@
 
 struct net_route_entry *net_route_add(struct net_if *iface,
 				      struct in6_addr *addr,
-				      uint8_t prefix_len,
+				      u8_t prefix_len,
 				      struct in6_addr *nexthop)
 {
 	struct net_linkaddr_storage *nexthop_lladdr;
diff --git a/subsys/net/ip/route.h b/subsys/net/ip/route.h
index 498500b..e8e4ff9 100644
--- a/subsys/net/ip/route.h
+++ b/subsys/net/ip/route.h
@@ -60,7 +60,7 @@
 	struct in6_addr addr;
 
 	/** IPv6 address/prefix length. */
-	uint8_t prefix_len;
+	u8_t prefix_len;
 };
 
 /**
@@ -87,7 +87,7 @@
  */
 struct net_route_entry *net_route_add(struct net_if *iface,
 				      struct in6_addr *addr,
-				      uint8_t prefix_len,
+				      u8_t prefix_len,
 				      struct in6_addr *nexthop);
 
 /**
@@ -178,7 +178,7 @@
 	struct in6_addr group;
 
 	/** Routing entry lifetime in seconds. */
-	uint32_t lifetime;
+	u32_t lifetime;
 
 	/** Is this entry in user or not */
 	bool is_used;
diff --git a/subsys/net/ip/rpl-mrhof.c b/subsys/net/ip/rpl-mrhof.c
index 27388aa..0df7306 100644
--- a/subsys/net/ip/rpl-mrhof.c
+++ b/subsys/net/ip/rpl-mrhof.c
@@ -72,14 +72,14 @@
 #define MRHOF_ETX_SCALE   100
 #define MRHOF_ETX_ALPHA   90
 
-static uint16_t net_rpl_mrhof_get(void)
+static u16_t net_rpl_mrhof_get(void)
 {
 	return 1;
 }
 
-uint16_t net_rpl_of_get(void) ALIAS_OF(net_rpl_mrhof_get);
+u16_t net_rpl_of_get(void) ALIAS_OF(net_rpl_mrhof_get);
 
-static bool net_rpl_mrhof_find(uint16_t ocp)
+static bool net_rpl_mrhof_find(u16_t ocp)
 {
 	if (ocp != 1) {
 		return false;
@@ -88,7 +88,7 @@
 	return true;
 }
 
-bool net_rpl_of_find(uint16_t ocp) ALIAS_OF(net_rpl_mrhof_find);
+bool net_rpl_of_find(u16_t ocp) ALIAS_OF(net_rpl_mrhof_find);
 
 static void net_rpl_mrhof_reset(struct net_rpl_dag *dag)
 {
@@ -101,11 +101,11 @@
 					  struct net_rpl_parent *parent,
 					  int status, int numtx)
 {
-	uint16_t packet_etx = numtx * NET_RPL_MC_ETX_DIVISOR;
-	uint16_t recorded_etx = 0;
+	u16_t packet_etx = numtx * NET_RPL_MC_ETX_DIVISOR;
+	u16_t recorded_etx = 0;
 	struct net_nbr *nbr = NULL;
 	struct net_nbr *ipv6_nbr;
-	uint16_t new_etx;
+	u16_t new_etx;
 
 	nbr = net_rpl_get_nbr(parent);
 	if (!nbr) {
@@ -137,8 +137,8 @@
 			/* We already have a valid link metric,
 			 * use weighted moving average to update it
 			 */
-			new_etx = ((uint32_t)recorded_etx * MRHOF_ETX_ALPHA +
-				   (uint32_t)packet_etx *
+			new_etx = ((u32_t)recorded_etx * MRHOF_ETX_ALPHA +
+				   (u32_t)packet_etx *
 				   (MRHOF_ETX_SCALE - MRHOF_ETX_ALPHA)) /
 				MRHOF_ETX_SCALE;
 		} else {
@@ -168,7 +168,7 @@
 				int status, int numtx)
 	ALIAS_OF(net_rpl_mrhof_neighbor_link_cb);
 
-static uint16_t calculate_path_metric(struct net_rpl_parent *parent)
+static u16_t calculate_path_metric(struct net_rpl_parent *parent)
 {
 	struct net_nbr *nbr;
 
@@ -203,9 +203,9 @@
 			  struct net_rpl_parent *parent2)
 {
 	struct net_rpl_dag *dag;
-	uint16_t min_diff;
-	uint16_t p1_metric;
-	uint16_t p2_metric;
+	u16_t min_diff;
+	u16_t p1_metric;
+	u16_t p2_metric;
 
 	dag = parent1->dag; /* Both parents are in the same DAG. */
 
@@ -258,11 +258,11 @@
 					struct net_rpl_dag *dag2)
 	ALIAS_OF(net_rpl_mrhof_best_dag);
 
-static uint16_t net_rpl_mrhof_calc_rank(struct net_rpl_parent *parent,
-					uint16_t base_rank)
+static u16_t net_rpl_mrhof_calc_rank(struct net_rpl_parent *parent,
+					u16_t base_rank)
 {
-	uint16_t new_rank;
-	uint16_t rank_increase;
+	u16_t new_rank;
+	u16_t rank_increase;
 	struct net_nbr *nbr;
 
 	nbr = net_rpl_get_nbr(parent);
@@ -293,8 +293,8 @@
 	return new_rank;
 }
 
-uint16_t net_rpl_of_calc_rank(struct net_rpl_parent *parent,
-			      uint16_t base_rank)
+u16_t net_rpl_of_calc_rank(struct net_rpl_parent *parent,
+			      u16_t base_rank)
 	ALIAS_OF(net_rpl_mrhof_calc_rank);
 
 static int net_rpl_mrhof_update_mc(struct net_rpl_instance *instance)
@@ -303,11 +303,11 @@
 	instance->mc.type = NET_RPL_MC_NONE;
 	return 0;
 #else
-	uint16_t path_metric;
+	u16_t path_metric;
 	struct net_rpl_dag *dag;
 
 #if defined(CONFIG_NET_RPL_MC_ENERGY)
-	uint8_t type;
+	u8_t type;
 
 	instance->mc.type = NET_RPL_MC_ENERGY;
 #else
diff --git a/subsys/net/ip/rpl-of0.c b/subsys/net/ip/rpl-of0.c
index 51eb13a..6846d6b 100644
--- a/subsys/net/ip/rpl-of0.c
+++ b/subsys/net/ip/rpl-of0.c
@@ -61,14 +61,14 @@
 #define MIN_DIFFERENCE (CONFIG_NET_RPL_MIN_HOP_RANK_INC + \
 			CONFIG_NET_RPL_MIN_HOP_RANK_INC / 2)
 
-static uint16_t net_rpl_of0_get(void)
+static u16_t net_rpl_of0_get(void)
 {
 	return 0;
 }
 
-uint16_t net_rpl_of_get(void) ALIAS_OF(net_rpl_of0_get);
+u16_t net_rpl_of_get(void) ALIAS_OF(net_rpl_of0_get);
 
-static bool net_rpl_of0_find(uint16_t ocp)
+static bool net_rpl_of0_find(u16_t ocp)
 {
 	if (ocp != 0) {
 		return false;
@@ -77,7 +77,7 @@
 	return true;
 }
 
-bool net_rpl_of_find(uint16_t ocp) ALIAS_OF(net_rpl_of0_find);
+bool net_rpl_of_find(u16_t ocp) ALIAS_OF(net_rpl_of0_find);
 
 static void net_rpl_of0_reset(struct net_rpl_dag *dag)
 {
@@ -103,7 +103,7 @@
 			struct net_rpl_parent *parent1,
 			struct net_rpl_parent *parent2)
 {
-	uint16_t rank1, rank2;
+	u16_t rank1, rank2;
 	struct net_rpl_dag *dag;
 	struct net_nbr *nbr1, *nbr2;
 
@@ -199,10 +199,10 @@
 					struct net_rpl_dag *dag2)
 	ALIAS_OF(net_rpl_of0_best_dag);
 
-static uint16_t net_rpl_of0_calc_rank(struct net_rpl_parent *parent,
-				      uint16_t base_rank)
+static u16_t net_rpl_of0_calc_rank(struct net_rpl_parent *parent,
+				      u16_t base_rank)
 {
-	uint16_t increment;
+	u16_t increment;
 
 	if (base_rank == 0) {
 		if (!parent) {
@@ -215,7 +215,7 @@
 	increment = parent ? parent->dag->instance->min_hop_rank_inc :
 		DEFAULT_RANK_INCREMENT;
 
-	if ((uint16_t)(base_rank + increment) < base_rank) {
+	if ((u16_t)(base_rank + increment) < base_rank) {
 		NET_DBG("OF0 rank %d incremented to infinite rank due to "
 			"wrapping", base_rank);
 
@@ -225,8 +225,8 @@
 	return base_rank + increment;
 }
 
-uint16_t net_rpl_of_calc_rank(struct net_rpl_parent *parent,
-			      uint16_t base_rank)
+u16_t net_rpl_of_calc_rank(struct net_rpl_parent *parent,
+			      u16_t base_rank)
 	ALIAS_OF(net_rpl_of0_calc_rank);
 
 static int net_rpl_of0_update_mc(struct net_rpl_instance *instance)
diff --git a/subsys/net/ip/rpl.c b/subsys/net/ip/rpl.c
index 2500edf..d6ba84c 100644
--- a/subsys/net/ip/rpl.c
+++ b/subsys/net/ip/rpl.c
@@ -111,7 +111,7 @@
 static struct net_rpl_instance *rpl_default_instance;
 static enum net_rpl_mode rpl_mode = NET_RPL_MODE_MESH;
 static net_rpl_join_callback_t rpl_join_callback;
-static uint8_t rpl_dao_sequence;
+static u8_t rpl_dao_sequence;
 
 #if NET_RPL_MULTICAST
 static void send_mcast_dao(struct net_rpl_instance *instance);
@@ -127,7 +127,7 @@
 /* This is set to true if we are able and ready to send any DIOs */
 static bool rpl_dio_send_ok;
 
-static int dao_send(struct net_rpl_parent *parent, uint8_t lifetime,
+static int dao_send(struct net_rpl_parent *parent, u8_t lifetime,
 		    struct net_if *iface);
 static void dao_send_timer(struct k_work *work);
 static void set_dao_lifetime_timer(struct net_rpl_instance *instance);
@@ -137,7 +137,7 @@
 					  struct in6_addr *addr);
 static void remove_parents(struct net_if *iface,
 			   struct net_rpl_dag *dag,
-			   uint16_t minimum_rank);
+			   u16_t minimum_rank);
 
 static void net_rpl_schedule_dao_now(struct net_rpl_instance *instance);
 static void net_rpl_local_repair(struct net_if *iface,
@@ -192,10 +192,10 @@
 	}
 }
 
-static inline uint32_t net_rpl_lifetime(struct net_rpl_instance *instance,
-					uint8_t lifetime)
+static inline u32_t net_rpl_lifetime(struct net_rpl_instance *instance,
+					u8_t lifetime)
 {
-	return (uint32_t)instance->lifetime_unit * (uint32_t)lifetime;
+	return (u32_t)instance->lifetime_unit * (u32_t)lifetime;
 }
 
 static void net_rpl_neighbor_data_remove(struct net_nbr *nbr)
@@ -273,7 +273,7 @@
 	for (i = 0; i < CONFIG_NET_IPV6_MAX_NEIGHBORS; i++) {
 		struct net_nbr *nbr = get_nbr(i);
 
-		if (nbr->data == (uint8_t *)data) {
+		if (nbr->data == (u8_t *)data) {
 			return nbr;
 		}
 	}
@@ -333,7 +333,7 @@
 	if (rpl_default_instance && rpl_default_instance->current_dag) {
 		int curr_interval = rpl_default_instance->dio_interval_current;
 		int curr_rank = rpl_default_instance->current_dag->rank;
-		uint32_t now = k_uptime_get_32();
+		u32_t now = k_uptime_get_32();
 		struct net_rpl_parent *parent;
 		int i;
 
@@ -418,8 +418,8 @@
 	return route;
 }
 
-static inline void setup_icmpv6_hdr(struct net_pkt *pkt, uint8_t type,
-				    uint8_t code)
+static inline void setup_icmpv6_hdr(struct net_pkt *pkt, u8_t type,
+				    u8_t code)
 {
 	net_pkt_append_u8(pkt, type);
 	net_pkt_append_u8(pkt, code);
@@ -434,7 +434,7 @@
 	struct net_rpl_dag *dag = instance->current_dag;
 	struct in6_addr addr, *dst_addr;
 	struct net_pkt *pkt;
-	uint16_t value;
+	u16_t value;
 	int ret;
 
 	pkt = net_pkt_get_reserve_tx(net_if_get_ll_reserve(iface, dst),
@@ -641,7 +641,7 @@
 
 static void new_dio_interval(struct net_rpl_instance *instance)
 {
-	uint32_t time;
+	u32_t time;
 
 	time = 1 << instance->dio_interval_current;
 
@@ -704,7 +704,7 @@
 	struct in6_addr addr, *dst_addr;
 	const struct in6_addr *src;
 	struct net_pkt *pkt;
-	uint16_t pos;
+	u16_t pos;
 	int ret;
 
 	if (!iface) {
@@ -790,7 +790,7 @@
 	return NET_OK;
 }
 
-static struct net_rpl_instance *net_rpl_get_instance(uint8_t instance_id)
+static struct net_rpl_instance *net_rpl_get_instance(u8_t instance_id)
 {
 	int i;
 
@@ -827,12 +827,12 @@
 	 * (2) selecting the least recently updated parent
 	 */
 	struct net_rpl_parent *probing_target = NULL;
-	uint16_t probing_target_rank = NET_RPL_INFINITE_RANK;
+	u16_t probing_target_rank = NET_RPL_INFINITE_RANK;
 
 	/* min_last_tx is the clock time NET_RPL_PROBING_EXPIRATION_TIME in
 	 * the past
 	 */
-	uint32_t min_last_tx = k_uptime_get_32();
+	u32_t min_last_tx = k_uptime_get_32();
 	struct net_rpl_parent *parent;
 	int i;
 
@@ -860,7 +860,7 @@
 			if (parent->dag == dag &&
 			    parent->last_tx_time < min_last_tx) {
 				/* parent is in our dag and needs probing */
-				uint16_t parent_rank =
+				u16_t parent_rank =
 					net_rpl_of_calc_rank(parent, 0);
 
 				if (!probing_target ||
@@ -1016,7 +1016,7 @@
 #endif
 
 static inline void net_rpl_instance_init(struct net_rpl_instance *instance,
-					 uint8_t id)
+					 u8_t id)
 {
 	memset(instance, 0, sizeof(struct net_rpl_instance));
 
@@ -1036,7 +1036,7 @@
 #endif
 }
 
-static struct net_rpl_instance *net_rpl_alloc_instance(uint8_t instance_id)
+static struct net_rpl_instance *net_rpl_alloc_instance(u8_t instance_id)
 {
 	int i;
 
@@ -1056,7 +1056,7 @@
 	return NULL;
 }
 
-static struct net_rpl_dag *alloc_dag(uint8_t instance_id,
+static struct net_rpl_dag *alloc_dag(u8_t instance_id,
 				     struct in6_addr *dag_id)
 {
 	struct net_rpl_instance *instance;
@@ -1094,7 +1094,7 @@
 	return NULL;
 }
 
-static struct net_rpl_dag *get_dag(uint8_t instance_id,
+static struct net_rpl_dag *get_dag(u8_t instance_id,
 				   struct in6_addr *dag_id)
 {
 	struct net_rpl_instance *instance;
@@ -1264,9 +1264,9 @@
 
 static
 struct net_rpl_dag *net_rpl_set_root_with_version(struct net_if *iface,
-						  uint8_t instance_id,
+						  u8_t instance_id,
 						  struct in6_addr *dag_id,
-						  uint8_t version)
+						  u8_t version)
 {
 	struct net_rpl_dag *dag;
 	struct net_rpl_instance *instance;
@@ -1372,7 +1372,7 @@
 }
 
 struct net_rpl_dag *net_rpl_set_root(struct net_if *iface,
-				     uint8_t instance_id,
+				     u8_t instance_id,
 				     struct in6_addr *dag_id)
 {
 	return net_rpl_set_root_with_version(iface, instance_id, dag_id,
@@ -1399,9 +1399,9 @@
 bool net_rpl_set_prefix(struct net_if *iface,
 			struct net_rpl_dag *dag,
 			struct in6_addr *prefix,
-			uint8_t prefix_len)
+			u8_t prefix_len)
 {
-	uint8_t last_len = dag->prefix_info.length;
+	u8_t last_len = dag->prefix_info.length;
 	struct net_rpl_prefix last_prefix;
 
 	if (prefix_len > 128) {
@@ -1503,7 +1503,7 @@
  */
 static void remove_parents(struct net_if *iface,
 			   struct net_rpl_dag *dag,
-			   uint16_t minimum_rank)
+			   u16_t minimum_rank)
 {
 	int i;
 
@@ -1599,10 +1599,10 @@
 	 */
 	if (instance && instance->lifetime_unit != 0xffff &&
 	    instance->default_lifetime != 0xff) {
-		uint32_t expiration_time;
+		u32_t expiration_time;
 
-		expiration_time = (uint32_t)instance->default_lifetime *
-			(uint32_t)instance->lifetime_unit *
+		expiration_time = (u32_t)instance->default_lifetime *
+			(u32_t)instance->lifetime_unit *
 			MSEC_PER_SEC / 2;
 
 		instance->dao_lifetime_timer_active = true;
@@ -1779,7 +1779,7 @@
 	return best;
 }
 
-static int acceptable_rank(struct net_rpl_dag *dag, uint16_t rank)
+static int acceptable_rank(struct net_rpl_dag *dag, u16_t rank)
 {
 	return rank != NET_RPL_INFINITE_RANK &&
 		(dag->instance->max_rank_inc == 0 ||
@@ -1795,7 +1795,7 @@
 {
 	struct net_rpl_parent *last_parent;
 	struct net_rpl_dag *best_dag;
-	uint16_t old_rank;
+	u16_t old_rank;
 
 	old_rank = instance->current_dag->rank;
 	last_parent = instance->current_dag->preferred_parent;
@@ -1911,7 +1911,7 @@
 
 static void nullify_parents(struct net_if *iface,
 			    struct net_rpl_dag *dag,
-			    uint16_t minimum_rank)
+			    u16_t minimum_rank)
 {
 	int i;
 
@@ -1962,7 +1962,7 @@
 	bool ret = true;
 
 #if defined(CONFIG_NET_DEBUG_RPL)
-	uint16_t old_rank = instance->current_dag->rank;
+	u16_t old_rank = instance->current_dag->rank;
 #endif
 
 	if (!acceptable_rank(parent->dag, parent->rank)) {
@@ -2017,7 +2017,7 @@
 	return ret;
 }
 
-static bool net_rpl_repair_root(uint8_t instance_id)
+static bool net_rpl_repair_root(u8_t instance_id)
 {
 	struct net_rpl_instance *instance;
 
@@ -2147,7 +2147,7 @@
 static void send_mcast_dao(struct net_rpl_instance *instance)
 {
 	struct in6_addr *addr = NULL;
-	uint8_t i;
+	u8_t i;
 
 	/* Send a DAO for own multicast addresses */
 	for (i = 0; i < NET_IF_MAX_IPV6_MADDR; i++) {
@@ -2533,7 +2533,7 @@
 	if (dag && instance) {
 		if (lollipop_greater_than(dio->version, dag->version)) {
 			if (dag->rank == NET_RPL_ROOT_RANK(instance)) {
-				uint8_t version;
+				u8_t version;
 
 				NET_DBG("Root received inconsistent DIO "
 					"version number %d rank %d",
@@ -2715,9 +2715,9 @@
 	struct net_rpl_dio dio = { 0 };
 	struct net_buf *frag;
 	struct net_nbr *nbr;
-	uint16_t offset, pos;
-	uint8_t subopt_type;
-	uint8_t flags, len, tmp;
+	u16_t offset, pos;
+	u8_t subopt_type;
+	u8_t flags, len, tmp;
 
 	net_rpl_info(pkt, "DODAG Information Object");
 
@@ -2977,16 +2977,16 @@
 int net_rpl_dao_send(struct net_if *iface,
 		     struct net_rpl_parent *parent,
 		     struct in6_addr *prefix,
-		     uint8_t lifetime)
+		     u8_t lifetime)
 {
-	uint16_t value = 0;
+	u16_t value = 0;
 	struct net_rpl_instance *instance;
 	const struct in6_addr *src;
 	struct net_rpl_dag *dag;
 	struct in6_addr *dst;
 	struct net_pkt *pkt;
-	uint8_t prefix_bytes;
-	uint8_t prefixlen;
+	u8_t prefix_bytes;
+	u8_t prefixlen;
 	int ret;
 
 	/* No DAOs in feather mode. */
@@ -3090,7 +3090,7 @@
 }
 
 static int dao_send(struct net_rpl_parent *parent,
-		    uint8_t lifetime,
+		    u8_t lifetime,
 		    struct net_if *iface)
 {
 	struct in6_addr *prefix;
@@ -3147,8 +3147,8 @@
 			struct in6_addr *dst,
 			struct net_if *iface,
 			struct net_rpl_instance *instance,
-			uint8_t sequence,
-			uint8_t status)
+			u8_t sequence,
+			u8_t status)
 {
 	struct net_pkt *pkt;
 	int ret;
@@ -3196,8 +3196,8 @@
 static int forwarding_dao(struct net_rpl_instance *instance,
 			  struct net_rpl_dag *dag,
 			  struct net_pkt *pkt,
-			  uint8_t sequence,
-			  uint8_t flags,
+			  u8_t sequence,
+			  u8_t flags,
 			  char *str)
 {
 	struct in6_addr *paddr;
@@ -3242,15 +3242,15 @@
 	struct net_buf *frag;
 	struct in6_addr addr;
 	struct net_nbr *nbr;
-	uint16_t offset;
-	uint16_t pos;
-	uint8_t sequence;
-	uint8_t instance_id;
-	uint8_t lifetime;
-	uint8_t target_len;
-	uint8_t flags;
-	uint8_t subopt_type;
-	uint8_t len;
+	u16_t offset;
+	u16_t pos;
+	u8_t sequence;
+	u8_t instance_id;
+	u8_t lifetime;
+	u8_t target_len;
+	u8_t flags;
+	u8_t subopt_type;
+	u8_t len;
 	int r = -EINVAL;
 
 	net_rpl_info(pkt, "Destination Advertisement Object");
@@ -3511,11 +3511,11 @@
 {
 	struct net_rpl_instance *instance;
 	struct net_buf *frag;
-	uint16_t offset;
-	uint16_t pos;
-	uint8_t instance_id;
-	uint8_t sequence;
-	uint8_t status;
+	u16_t offset;
+	u16_t pos;
+	u8_t instance_id;
+	u8_t sequence;
+	u8_t status;
 
 	net_rpl_info(pkt, "Destination Advertisement Object Ack");
 
@@ -3601,13 +3601,13 @@
 
 int net_rpl_update_header(struct net_pkt *pkt, struct in6_addr *addr)
 {
-	uint16_t pos = 0;
+	u16_t pos = 0;
 	struct net_rpl_parent *parent;
 	struct net_buf *frag;
-	uint16_t sender_rank;
-	uint16_t offset;
-	uint8_t opt;
-	uint8_t len;
+	u16_t sender_rank;
+	u16_t offset;
+	u8_t opt;
+	u8_t len;
 
 	if (NET_IPV6_HDR(pkt)->nexthdr != NET_IPV6_NEXTHDR_HBHO) {
 		return 0;
@@ -3644,7 +3644,7 @@
 	offset = pos;
 	frag = net_frag_skip(frag, pos, &pos, 1); /* flags */
 	frag = net_frag_skip(frag, pos, &pos, 1); /* instance */
-	frag = net_frag_read(frag, pos, &pos, 2, (uint8_t *)&sender_rank);
+	frag = net_frag_read(frag, pos, &pos, 2, (u8_t *)&sender_rank);
 	if (!frag && pos) {
 		return -EMSGSIZE;
 	}
@@ -3678,12 +3678,12 @@
 }
 
 struct net_buf *net_rpl_verify_header(struct net_pkt *pkt, struct net_buf *frag,
-				      uint16_t offset, uint16_t *pos,
+				      u16_t offset, u16_t *pos,
 				      bool *result)
 {
 	struct net_rpl_instance *instance;
-	uint16_t sender_rank;
-	uint8_t instance_id, flags;
+	u16_t sender_rank;
+	u8_t instance_id, flags;
 	bool down, sender_closer;
 
 	frag = net_frag_read_u8(frag, offset, pos, &flags);
@@ -3781,7 +3781,7 @@
 	return frag;
 }
 
-static inline int add_rpl_opt(struct net_pkt *pkt, uint16_t offset)
+static inline int add_rpl_opt(struct net_pkt *pkt, u16_t offset)
 {
 	int ext_len = net_pkt_ipv6_ext_len(pkt);
 	bool ret;
@@ -3843,16 +3843,16 @@
 
 static int net_rpl_update_header_empty(struct net_pkt *pkt)
 {
-	uint16_t offset = sizeof(struct net_ipv6_hdr);
-	uint8_t next = NET_IPV6_HDR(pkt)->nexthdr;
+	u16_t offset = sizeof(struct net_ipv6_hdr);
+	u8_t next = NET_IPV6_HDR(pkt)->nexthdr;
 	struct net_buf *frag = pkt->frags;
 	struct net_rpl_instance *instance;
 	struct net_rpl_parent *parent;
 	struct net_route_entry *route;
-	uint8_t next_hdr, len, length;
-	uint8_t opt_type = 0, opt_len;
-	uint8_t instance_id, flags;
-	uint16_t pos;
+	u8_t next_hdr, len, length;
+	u8_t opt_type = 0, opt_len;
+	u8_t instance_id, flags;
+	u16_t pos;
 
 	NET_DBG("Verifying the presence of the RPL header option");
 
@@ -3998,16 +3998,16 @@
 	return 0;
 }
 
-int net_rpl_revert_header(struct net_pkt *pkt, uint16_t offset, uint16_t *pos)
+int net_rpl_revert_header(struct net_pkt *pkt, u16_t offset, u16_t *pos)
 {
 	struct net_rpl_instance *instance;
 	struct net_buf *frag;
-	uint16_t sender_rank;
-	uint16_t revert_pos;
-	uint8_t instance_id;
-	uint8_t opt_len;
-	uint8_t flags;
-	uint8_t opt;
+	u16_t sender_rank;
+	u16_t revert_pos;
+	u8_t instance_id;
+	u8_t opt_len;
+	u8_t flags;
+	u8_t opt;
 
 	/* Skip HBHO next header and length */
 	frag = net_frag_skip(pkt->frags, offset, pos, 2);
@@ -4075,7 +4075,7 @@
 #if defined(CONFIG_NET_RPL_DIS_SEND)
 static void dis_timeout(struct k_work *work)
 {
-	uint32_t dis_interval;
+	u32_t dis_interval;
 
 	NET_DBG("DIS Timer triggered at %u", k_uptime_get_32());
 
@@ -4091,11 +4091,11 @@
 {
 #if defined(CONFIG_NET_RPL_DIS_SEND)
 	/* Randomize the first DIS sending*/
-	uint32_t dis_interval;
+	u32_t dis_interval;
 
 	dis_interval = (CONFIG_NET_RPL_DIS_INTERVAL / 2 +
-			((uint32_t)CONFIG_NET_RPL_DIS_INTERVAL *
-			 (uint32_t)sys_rand32_get()) / UINT_MAX -
+			((u32_t)CONFIG_NET_RPL_DIS_INTERVAL *
+			 (u32_t)sys_rand32_get()) / UINT_MAX -
 			NET_RPL_DIS_START_DELAY) * MSEC_PER_SEC;
 
 	k_delayed_work_init(&dis_timer, dis_timeout);
diff --git a/subsys/net/ip/rpl.h b/subsys/net/ip/rpl.h
index b6e4b38..26324c1 100644
--- a/subsys/net/ip/rpl.h
+++ b/subsys/net/ip/rpl.h
@@ -153,13 +153,13 @@
 #define NET_RPL_LOLLIPOP_CIRCULAR_REGION  127
 #define NET_RPL_LOLLIPOP_SEQUENCE_WINDOWS 16
 
-static inline uint8_t net_rpl_lollipop_init(void)
+static inline u8_t net_rpl_lollipop_init(void)
 {
 	return NET_RPL_LOLLIPOP_MAX_VALUE -
 		NET_RPL_LOLLIPOP_SEQUENCE_WINDOWS + 1;
 }
 
-static inline void net_rpl_lollipop_increment(uint8_t *counter)
+static inline void net_rpl_lollipop_increment(u8_t *counter)
 {
 	if (*counter > NET_RPL_LOLLIPOP_CIRCULAR_REGION) {
 		*counter = (*counter + 1) & NET_RPL_LOLLIPOP_MAX_VALUE;
@@ -168,7 +168,7 @@
 	}
 }
 
-static inline bool net_rpl_lollipop_is_init(uint8_t counter)
+static inline bool net_rpl_lollipop_is_init(u8_t counter)
 {
 	return counter > NET_RPL_LOLLIPOP_CIRCULAR_REGION;
 }
@@ -184,13 +184,13 @@
 	struct in6_addr prefix;
 
 	/** Lifetime of the prefix */
-	uint32_t lifetime;
+	u32_t lifetime;
 
 	/** Length of the prefix */
-	uint8_t length;
+	u8_t length;
 
 	/** Prefix flags */
-	uint8_t flags;
+	u8_t flags;
 };
 
 /**
@@ -198,10 +198,10 @@
  */
 struct net_rpl_node_energy_object {
 	/** Energy node flags */
-	uint8_t flags;
+	u8_t flags;
 
 	/** Energy estimation */
-	uint8_t estimation;
+	u8_t estimation;
 };
 
 /**
@@ -209,27 +209,27 @@
  */
 struct net_rpl_metric_container {
 	/** Type of the container */
-	uint8_t type;
+	u8_t type;
 
 	/** Container flags */
-	uint8_t flags;
+	u8_t flags;
 
 	/** Aggregated value (A field) */
-	uint8_t aggregated;
+	u8_t aggregated;
 
 	/**
 	 * Precedence of this Routing Metric/Constraint object relative
 	 * to other objects in the container.
 	 */
-	uint8_t precedence;
+	u8_t precedence;
 
 	/** Length of the object body */
-	uint8_t length;
+	u8_t length;
 
 	/** Metric container information */
 	union metric_object {
 		struct net_rpl_node_energy_object energy;
-		uint16_t etx;
+		u16_t etx;
 	} obj;
 };
 
@@ -244,16 +244,16 @@
 	struct net_rpl_metric_container mc;
 
 	/** When last transmit happened */
-	uint32_t last_tx_time;
+	u32_t last_tx_time;
 
 	/** Rank of the parent */
-	uint16_t rank;
+	u16_t rank;
 
 	/** Destination Advertisement Trigger Sequence Number */
-	uint8_t dtsn;
+	u8_t dtsn;
 
 	/** Parent flags */
-	uint8_t flags;
+	u8_t flags;
 };
 
 /**
@@ -273,27 +273,27 @@
 	struct net_rpl_instance *instance;
 
 	/** Minimum rank */
-	uint16_t min_rank;
+	u16_t min_rank;
 
 	/** DAG rank */
-	uint16_t rank;
+	u16_t rank;
 
 	/** DAG version. */
-	uint8_t version;
+	u8_t version;
 
 	/** DODAG preference. */
-	uint8_t preference : 3;
+	u8_t preference : 3;
 
 	/** Is this DAG used or not. */
-	uint8_t is_used : 1;
+	u8_t is_used : 1;
 
 	/** Is DAG grounded or floating. */
-	uint8_t is_grounded : 1;
+	u8_t is_grounded : 1;
 
 	/** Is DAG joined or not. */
-	uint8_t is_joined : 1;
+	u8_t is_joined : 1;
 
-	uint8_t _unused : 2;
+	u8_t _unused : 2;
 };
 
 /**
@@ -369,8 +369,8 @@
  * added to the base rank. Otherwise, the OF uses information known
  * about parent to select an increment to the base rank.
  */
-extern uint16_t net_rpl_of_calc_rank(struct net_rpl_parent *parent,
-				     uint16_t rank);
+extern u16_t net_rpl_of_calc_rank(struct net_rpl_parent *parent,
+				     u16_t rank);
 
 /**
  * @brief RPL object function (OF) update metric container.
@@ -392,14 +392,14 @@
  *
  * @return true if OF is supported, false otherwise.
  */
-extern bool net_rpl_of_find(uint16_t ocp);
+extern bool net_rpl_of_find(u16_t ocp);
 
 /**
  * @brief Return RPL object function (OF) objective code point used.
  *
  * @return OCP (Objective Code Point) value used.
  */
-extern uint16_t net_rpl_of_get(void);
+extern u16_t net_rpl_of_get(void);
 
 /**
  * @brief RPL instance structure
@@ -432,7 +432,7 @@
 	struct k_delayed_work dao_retransmit_timer;
 
 	/** DAO number of retransmissions */
-	uint8_t dao_transmissions;
+	u8_t dao_transmissions;
 #endif
 
 	/** Network interface to send DAO */
@@ -445,33 +445,33 @@
 	struct net_if_router *default_route;
 
 	/** Amount of time for completion of dio interval */
-	uint32_t dio_next_delay;
+	u32_t dio_next_delay;
 
 	/** Objective Code Point (Used objective function) */
-	uint16_t ocp;
+	u16_t ocp;
 
 	/** MaxRankIncrease, RFC 6550, ch 6.7.6 */
-	uint16_t max_rank_inc;
+	u16_t max_rank_inc;
 
 	/** MinHopRankIncrease, RFC 6550, ch 6.7.6 */
-	uint16_t min_hop_rank_inc;
+	u16_t min_hop_rank_inc;
 
 	/**
 	 * Provides the unit in seconds that is used to express route
 	 * lifetimes in RPL.  For very stable networks, it can be hours
 	 * to days. RFC 6550, ch 6.7.6
 	 */
-	uint16_t lifetime_unit;
+	u16_t lifetime_unit;
 
 #if defined(CONFIG_NET_STATISTICS_RPL)
 	/** Number of DIO intervals for this RPL instance. */
-	uint16_t dio_intervals;
+	u16_t dio_intervals;
 
 	/** Number of DIOs sent for this RPL instance. */
-	uint16_t dio_send_pkt;
+	u16_t dio_send_pkt;
 
 	/** Number of DIOs received for this RPL instance. */
-	uint16_t dio_recv_pkt;
+	u16_t dio_recv_pkt;
 #endif /* CONFIG_NET_STATISTICS_RPL */
 
 	/**
@@ -480,31 +480,31 @@
 	 * lifetime in seconds is (Default Lifetime) * (Lifetime Unit)
 	 * RFC 6550, ch 6.7.6
 	 */
-	uint8_t default_lifetime;
+	u8_t default_lifetime;
 
 	/** Instance ID of this RPL instance */
-	uint8_t instance_id;
+	u8_t instance_id;
 
 	/** Destination Advertisement Trigger Sequence Number */
-	uint8_t dtsn;
+	u8_t dtsn;
 
 	/** Mode of operation */
-	uint8_t mop;
+	u8_t mop;
 
 	/** DIOIntervalDoublings, RFC 6550, ch 6.7.6 */
-	uint8_t dio_interval_doublings;
+	u8_t dio_interval_doublings;
 
 	/** DIOIntervalMin, RFC 6550, ch 6.7.6 */
-	uint8_t dio_interval_min;
+	u8_t dio_interval_min;
 
 	/** Current DIO interval */
-	uint8_t dio_interval_current;
+	u8_t dio_interval_current;
 
 	/** DIORedundancyConstant, ch 6.7.6 */
-	uint8_t dio_redundancy;
+	u8_t dio_redundancy;
 
 	/** Current number of DIOs received (temp var) */
-	uint8_t dio_counter;
+	u8_t dio_counter;
 
 	/** Keep track of whether we can send DIOs or not (true if we can send)
 	 */
@@ -539,22 +539,22 @@
 	struct net_rpl_prefix destination_prefix;
 
 	/** Objective Code Point (OF being used) */
-	uint16_t ocp;
+	u16_t ocp;
 
 	/** Current rank */
-	uint16_t rank;
+	u16_t rank;
 
 	/** MaxRankIncrease, RFC 6550, ch 6.7.6 */
-	uint16_t max_rank_inc;
+	u16_t max_rank_inc;
 
 	/** MinHopRankIncrease, RFC 6550, ch 6.7.6 */
-	uint16_t min_hop_rank_inc;
+	u16_t min_hop_rank_inc;
 	/**
 	 * Provides the unit in seconds that is used to express route
 	 * lifetimes in RPL.  For very stable networks, it can be hours
 	 * to days. RFC 6550, ch 6.7.6
 	 */
-	uint16_t lifetime_unit;
+	u16_t lifetime_unit;
 
 	/**
 	 * This is the lifetime that is used as default for all RPL routes.
@@ -562,37 +562,37 @@
 	 * lifetime in seconds is (Default Lifetime) * (Lifetime Unit)
 	 * RFC 6550, ch 6.7.6
 	 */
-	uint8_t default_lifetime;
+	u8_t default_lifetime;
 
 	/** Instance ID of this RPL instance */
-	uint8_t instance_id;
+	u8_t instance_id;
 
 	/** Destination Advertisement Trigger Sequence Number */
-	uint8_t dtsn;
+	u8_t dtsn;
 
 	/** Mode of operation */
-	uint8_t mop;
+	u8_t mop;
 
 	/** DAG interval doublings */
-	uint8_t dag_interval_doublings;
+	u8_t dag_interval_doublings;
 
 	/** DAG interval min */
-	uint8_t dag_interval_min;
+	u8_t dag_interval_min;
 
 	/** DAG interval */
-	uint8_t dag_interval_current;
+	u8_t dag_interval_current;
 
 	/** DAG redundancy constant */
-	uint8_t dag_redundancy;
+	u8_t dag_redundancy;
 
 	/** Is this DAG grounded or floating */
-	uint8_t grounded;
+	u8_t grounded;
 
 	/** DODAG preference */
-	uint8_t preference;
+	u8_t preference;
 
 	/** DODAG version number */
-	uint8_t version;
+	u8_t version;
 };
 
 /**
@@ -615,7 +615,7 @@
 	struct net_rpl_dag *dag;
 
 	/** Lifetime for this route entry (in seconds) */
-	uint32_t lifetime;
+	u32_t lifetime;
 
 	/** Where this route came from */
 	enum net_rpl_route_source route_source;
@@ -782,7 +782,7 @@
  * @return preference value
  */
 static inline
-uint8_t net_rpl_dag_get_preference(struct net_rpl_dag *dag)
+u8_t net_rpl_dag_get_preference(struct net_rpl_dag *dag)
 {
 	NET_ASSERT(dag);
 
@@ -799,7 +799,7 @@
  */
 static inline
 void net_rpl_dag_set_preference(struct net_rpl_dag *dag,
-				uint8_t preference)
+				u8_t preference)
 {
 	NET_ASSERT(dag && preference <= 8);
 
@@ -846,7 +846,7 @@
 int net_rpl_dao_send(struct net_if *iface,
 		     struct net_rpl_parent *parent,
 		     struct in6_addr *prefix,
-		     uint8_t lifetime);
+		     u8_t lifetime);
 
 /**
  * @brief Send a DODAG Information Object message.
@@ -874,7 +874,7 @@
  * @return DAG object or NULL if creation failed.
  */
 struct net_rpl_dag *net_rpl_set_root(struct net_if *iface,
-				     uint8_t instance_id,
+				     u8_t instance_id,
 				     struct in6_addr *dag_id);
 
 /**
@@ -897,7 +897,7 @@
 bool net_rpl_set_prefix(struct net_if *iface,
 			struct net_rpl_dag *dag,
 			struct in6_addr *prefix,
-			uint8_t prefix_len);
+			u8_t prefix_len);
 
 /**
  * @brief Do global repair for this route.
@@ -928,7 +928,7 @@
  * @return frag Returns the fragment where this call finished reading.
  */
 struct net_buf *net_rpl_verify_header(struct net_pkt *pkt, struct net_buf *frag,
-				      uint16_t offset, uint16_t *pos,
+				      u16_t offset, u16_t *pos,
 				      bool *result);
 
 /**
@@ -950,7 +950,7 @@
  *
  * @return 0 if ok, <0 if error.
  */
-int net_rpl_revert_header(struct net_pkt *pkt, uint16_t offset, uint16_t *pos);
+int net_rpl_revert_header(struct net_pkt *pkt, u16_t offset, u16_t *pos);
 
 /**
  * @brief Get parent IPv6 address.
diff --git a/subsys/net/ip/tcp.c b/subsys/net/ip/tcp.c
index 4df6ef5..ccd39e4 100644
--- a/subsys/net/ip/tcp.c
+++ b/subsys/net/ip/tcp.c
@@ -52,11 +52,11 @@
 #endif
 
 struct tcp_segment {
-	uint32_t seq;
-	uint32_t ack;
-	uint16_t wnd;
-	uint8_t flags;
-	uint8_t optlen;
+	u32_t seq;
+	u32_t ack;
+	u16_t wnd;
+	u8_t flags;
+	u8_t optlen;
 	void *options;
 	struct sockaddr_ptr *src_addr;
 	const struct sockaddr *dst_addr;
@@ -74,8 +74,8 @@
 
 static void net_tcp_trace(struct net_pkt *pkt, struct net_tcp *tcp)
 {
-	uint8_t flags = NET_TCP_FLAGS(pkt);
-	uint32_t rel_ack, ack;
+	u8_t flags = NET_TCP_FLAGS(pkt);
+	u32_t rel_ack, ack;
 
 	ack = sys_get_be32(NET_TCP_HDR(pkt)->ack);
 
@@ -107,15 +107,15 @@
 #define net_tcp_trace(...)
 #endif /* CONFIG_NET_DEBUG_TCP */
 
-static inline uint32_t init_isn(void)
+static inline u32_t init_isn(void)
 {
 	/* Randomise initial seq number */
 	return sys_rand32_get();
 }
 
-static inline uint32_t retry_timeout(const struct net_tcp *tcp)
+static inline u32_t retry_timeout(const struct net_tcp *tcp)
 {
-	return ((uint32_t)1 << tcp->retry_timeout_shift) * INIT_RETRY_MS;
+	return ((u32_t)1 << tcp->retry_timeout_shift) * INIT_RETRY_MS;
 }
 
 #define is_6lo_technology(pkt)						    \
@@ -230,10 +230,10 @@
 	return 0;
 }
 
-static inline uint8_t net_tcp_add_options(struct net_buf *header, size_t len,
+static inline u8_t net_tcp_add_options(struct net_buf *header, size_t len,
 					  void *data)
 {
-	uint8_t optlen;
+	u8_t optlen;
 
 	memcpy(net_buf_add(header, len), data, len);
 
@@ -272,8 +272,8 @@
 	struct net_buf *header, *tail = NULL;
 	struct net_tcp_hdr *tcphdr;
 	struct net_context *context = tcp->context;
-	uint16_t dst_port, src_port;
-	uint8_t optlen = 0;
+	u16_t dst_port, src_port;
+	u8_t optlen = 0;
 
 	NET_ASSERT(context);
 
@@ -353,7 +353,7 @@
 	return pkt;
 }
 
-static inline uint32_t get_recv_wnd(struct net_tcp *tcp)
+static inline u32_t get_recv_wnd(struct net_tcp *tcp)
 {
 	ARG_UNUSED(tcp);
 
@@ -369,20 +369,20 @@
 /* True if the (signed!) difference "seq1 - seq2" is positive and less
  * than 2^29.  That is, seq1 is "after" seq2.
  */
-static inline bool seq_greater(uint32_t seq1, uint32_t seq2)
+static inline bool seq_greater(u32_t seq1, u32_t seq2)
 {
 	int d = (int)(seq1 - seq2);
 	return d > 0 && d < 0x20000000;
 }
 
-int net_tcp_prepare_segment(struct net_tcp *tcp, uint8_t flags,
+int net_tcp_prepare_segment(struct net_tcp *tcp, u8_t flags,
 			    void *options, size_t optlen,
 			    const struct sockaddr_ptr *local,
 			    const struct sockaddr *remote,
 			    struct net_pkt **send_pkt)
 {
-	uint32_t seq;
-	uint16_t wnd;
+	u32_t seq;
+	u16_t wnd;
 	struct tcp_segment segment = { 0 };
 
 	if (!local) {
@@ -451,9 +451,9 @@
 	return 0;
 }
 
-static inline uint32_t get_size(uint32_t pos1, uint32_t pos2)
+static inline u32_t get_size(u32_t pos1, u32_t pos2)
 {
-	uint32_t size;
+	u32_t size;
 
 	if (pos1 <= pos2) {
 		size = pos2 - pos1;
@@ -482,7 +482,7 @@
 #define ip_max_packet_len(...) 0
 #endif /* CONFIG_NET_IPV4 */
 
-uint16_t net_tcp_get_recv_mss(const struct net_tcp *tcp)
+u16_t net_tcp_get_recv_mss(const struct net_tcp *tcp)
 {
 	sa_family_t family = net_context_get_family(tcp->context);
 
@@ -509,10 +509,10 @@
 	return 0;
 }
 
-static void net_tcp_set_syn_opt(struct net_tcp *tcp, uint8_t *options,
-				uint8_t *optionlen)
+static void net_tcp_set_syn_opt(struct net_tcp *tcp, u8_t *options,
+				u8_t *optionlen)
 {
-	uint16_t recv_mss;
+	u16_t recv_mss;
 
 	*optionlen = 0;
 
@@ -523,8 +523,8 @@
 		recv_mss = 0;
 	}
 
-	UNALIGNED_PUT(htonl((uint32_t)recv_mss | NET_TCP_MSS_HEADER),
-		      (uint32_t *)(options + *optionlen));
+	UNALIGNED_PUT(htonl((u32_t)recv_mss | NET_TCP_MSS_HEADER),
+		      (u32_t *)(options + *optionlen));
 
 	*optionlen += NET_TCP_MSS_SIZE;
 }
@@ -532,8 +532,8 @@
 int net_tcp_prepare_ack(struct net_tcp *tcp, const struct sockaddr *remote,
 			struct net_pkt **pkt)
 {
-	uint8_t options[NET_TCP_MAX_OPT_SIZE];
-	uint8_t optionlen;
+	u8_t options[NET_TCP_MAX_OPT_SIZE];
+	u8_t optionlen;
 
 	switch (net_tcp_get_state(tcp)) {
 	case NET_TCP_SYN_RCVD:
@@ -776,14 +776,14 @@
 	return 0;
 }
 
-void net_tcp_ack_received(struct net_context *ctx, uint32_t ack)
+void net_tcp_ack_received(struct net_context *ctx, u32_t ack)
 {
 	struct net_tcp *tcp = ctx->tcp;
 	sys_slist_t *list = &ctx->tcp->sent_list;
 	sys_snode_t *head;
 	struct net_pkt *pkt;
 	struct net_tcp_hdr *tcphdr;
-	uint32_t seq;
+	u32_t seq;
 	bool valid_ack = false;
 
 	while (!sys_slist_is_empty(list)) {
@@ -850,7 +850,7 @@
 static void validate_state_transition(enum net_tcp_state current,
 				      enum net_tcp_state new)
 {
-	static const uint16_t valid_transitions[] = {
+	static const u16_t valid_transitions[] = {
 		[NET_TCP_CLOSED] = 1 << NET_TCP_LISTEN |
 			1 << NET_TCP_SYN_SENT,
 		[NET_TCP_LISTEN] = 1 << NET_TCP_SYN_RCVD |
diff --git a/subsys/net/ip/tcp.h b/subsys/net/ip/tcp.h
index a4201db..844c9f2 100644
--- a/subsys/net/ip/tcp.h
+++ b/subsys/net/ip/tcp.h
@@ -111,36 +111,36 @@
 	sys_slist_t sent_list;
 
 	/** Max acknowledgment. */
-	uint32_t recv_max_ack;
+	u32_t recv_max_ack;
 
 	/** Current sequence number. */
-	uint32_t send_seq;
+	u32_t send_seq;
 
 	/** Acknowledgment number to send in next packet. */
-	uint32_t send_ack;
+	u32_t send_ack;
 
 	/** Last ACK value sent */
-	uint32_t sent_ack;
+	u32_t sent_ack;
 
 	/** Current retransmit period */
-	uint32_t retry_timeout_shift : 5;
+	u32_t retry_timeout_shift : 5;
 	/** Flags for the TCP */
-	uint32_t flags : 8;
+	u32_t flags : 8;
 	/** Current TCP state */
-	uint32_t state : 4;
+	u32_t state : 4;
 	/* A FIN packet has been queued for transmission */
-	uint32_t fin_queued : 1;
+	u32_t fin_queued : 1;
 	/* An outbound FIN packet has been sent */
-	uint32_t fin_sent : 1;
+	u32_t fin_sent : 1;
 	/* An inbound FIN packet has been received */
-	uint32_t fin_rcvd : 1;
+	u32_t fin_rcvd : 1;
 	/* Tells if ack timer has been already cancelled. It might happen
 	 * that the timer is executed even if it is cancelled, this is because
 	 * of various timing issues when timer is scheduled to run.
 	 */
-	uint32_t ack_timer_cancelled : 1;
-	/** Remaining bits in this uint32_t */
-	uint32_t _padding : 11;
+	u32_t ack_timer_cancelled : 1;
+	/** Remaining bits in this u32_t */
+	u32_t _padding : 11;
 
 	/** Accept callback to be called when the connection has been
 	 * established.
@@ -176,8 +176,8 @@
  */
 static inline int net_tcp_register(const struct sockaddr *remote_addr,
 				   const struct sockaddr *local_addr,
-				   uint16_t remote_port,
-				   uint16_t local_port,
+				   u16_t remote_port,
+				   u16_t local_port,
 				   net_conn_cb_t cb,
 				   void *user_data,
 				   struct net_conn_handle **handle)
@@ -243,7 +243,7 @@
  *
  * @return 0 if ok, < 0 if error
  */
-int net_tcp_prepare_segment(struct net_tcp *tcp, uint8_t flags,
+int net_tcp_prepare_segment(struct net_tcp *tcp, u8_t flags,
 			    void *options, size_t optlen,
 			    const struct sockaddr_ptr *local,
 			    const struct sockaddr *remote,
@@ -317,7 +317,7 @@
  * @param cts Context
  * @param seq Received ACK sequence number
  */
-void net_tcp_ack_received(struct net_context *ctx, uint32_t ack);
+void net_tcp_ack_received(struct net_context *ctx, u32_t ack);
 
 /**
  * @brief Calculates and returns the MSS for a given TCP context
@@ -326,7 +326,7 @@
  *
  * @return Maximum Segment Size
  */
-uint16_t net_tcp_get_recv_mss(const struct net_tcp *tcp);
+u16_t net_tcp_get_recv_mss(const struct net_tcp *tcp);
 
 /**
  * @brief Obtains the state for a TCP context
diff --git a/subsys/net/ip/trickle.c b/subsys/net/ip/trickle.c
index 943e3f7..ad7405b 100644
--- a/subsys/net/ip/trickle.c
+++ b/subsys/net/ip/trickle.c
@@ -34,13 +34,13 @@
 		(trickle->c < trickle->k);
 }
 
-static inline uint32_t get_end(struct net_trickle *trickle)
+static inline u32_t get_end(struct net_trickle *trickle)
 {
 	return trickle->Istart + trickle->I;
 }
 
 /* Returns a random time point t in [I/2 , I) */
-static uint32_t get_t(uint32_t I)
+static u32_t get_t(u32_t I)
 {
 	I >>= 1;
 
@@ -54,10 +54,10 @@
 	struct net_trickle *trickle = CONTAINER_OF(work,
 						   struct net_trickle,
 						   timer);
-	uint32_t rand_time;
+	u32_t rand_time;
 
 #if defined(CONFIG_NET_DEBUG_TRICKLE)
-	uint32_t last_end = get_end(trickle);
+	u32_t last_end = get_end(trickle);
 #endif
 
 	trickle->c = 0;
@@ -91,8 +91,8 @@
 
 static inline void reschedule(struct net_trickle *trickle)
 {
-	uint32_t now = k_uptime_get_32();
-	uint32_t diff = get_end(trickle) - now;
+	u32_t now = k_uptime_get_32();
+	u32_t diff = get_end(trickle) - now;
 
 	NET_DBG("now %d end in %d", now, diff);
 
@@ -129,7 +129,7 @@
 
 static void setup_new_interval(struct net_trickle *trickle)
 {
-	uint32_t t;
+	u32_t t;
 
 	trickle->c = 0;
 
@@ -150,9 +150,9 @@
 	((Imin < 2) || (Imin > (TICK_MAX >> 1)))
 
 int net_trickle_create(struct net_trickle *trickle,
-		       uint32_t Imin,
-		       uint8_t Imax,
-		       uint8_t k)
+		       u32_t Imin,
+		       u8_t Imax,
+		       u8_t k)
 {
 	NET_ASSERT(trickle && Imax > 0 && k > 0 && !CHECK_IMIN(Imin));
 
diff --git a/subsys/net/ip/udp.h b/subsys/net/ip/udp.h
index 27f20c2..6a8d112 100644
--- a/subsys/net/ip/udp.h
+++ b/subsys/net/ip/udp.h
@@ -37,8 +37,8 @@
  * @return Return network packet that contains the UDP packet.
  */
 static inline struct net_pkt *net_udp_append_raw(struct net_pkt *pkt,
-						 uint16_t src_port,
-						 uint16_t dst_port)
+						 u16_t src_port,
+						 u16_t dst_port)
 {
 	NET_UDP_HDR(pkt)->src_port = htons(src_port);
 	NET_UDP_HDR(pkt)->dst_port = htons(dst_port);
@@ -65,7 +65,7 @@
  */
 static inline struct net_pkt *net_udp_append(struct net_context *context,
 					     struct net_pkt *pkt,
-					     uint16_t port)
+					     u16_t port)
 {
 	return net_udp_append_raw(pkt,
 				  ntohs(net_sin((struct sockaddr *)
@@ -93,8 +93,8 @@
  */
 static inline int net_udp_register(const struct sockaddr *remote_addr,
 				   const struct sockaddr *local_addr,
-				   uint16_t remote_port,
-				   uint16_t local_port,
+				   u16_t remote_port,
+				   u16_t local_port,
 				   net_conn_cb_t cb,
 				   void *user_data,
 				   struct net_conn_handle **handle)
diff --git a/subsys/net/ip/utils.c b/subsys/net/ip/utils.c
index a3b1fa2..f9e3e1d 100644
--- a/subsys/net/ip/utils.c
+++ b/subsys/net/ip/utils.c
@@ -42,7 +42,7 @@
 	return "UNK_PROTO";
 }
 
-char *net_byte_to_hex(char *ptr, uint8_t byte, char base, bool pad)
+char *net_byte_to_hex(char *ptr, u8_t byte, char base, bool pad)
 {
 	int i, val;
 
@@ -62,10 +62,10 @@
 	return ptr;
 }
 
-char *net_sprint_ll_addr_buf(const uint8_t *ll, uint8_t ll_len,
+char *net_sprint_ll_addr_buf(const u8_t *ll, u8_t ll_len,
 			     char *buf, int buflen)
 {
-	uint8_t i, len, blen;
+	u8_t i, len, blen;
 	char *ptr = buf;
 
 	switch (ll_len) {
@@ -94,9 +94,9 @@
 	return buf;
 }
 
-static int net_value_to_udec(char *buf, uint32_t value, int precision)
+static int net_value_to_udec(char *buf, u32_t value, int precision)
 {
-	uint32_t divisor;
+	u32_t divisor;
 	int i;
 	int temp;
 	char *start = buf;
@@ -122,23 +122,23 @@
 {
 	struct in_addr *addr;
 	struct in6_addr *addr6;
-	uint16_t *w;
-	uint8_t i, bl, bh, longest = 1;
-	int8_t pos = -1;
+	u16_t *w;
+	u8_t i, bl, bh, longest = 1;
+	s8_t pos = -1;
 	char delim = ':';
 	unsigned char zeros[8] = { 0 };
 	char *ptr = dst;
 	int len = -1;
-	uint16_t value;
+	u16_t value;
 	bool needcolon = false;
 
 	if (family == AF_INET6) {
 		addr6 = (struct in6_addr *)src;
-		w = (uint16_t *)addr6->s6_addr16;
+		w = (u16_t *)addr6->s6_addr16;
 		len = 8;
 
 		for (i = 0; i < 8; i++) {
-			uint8_t j;
+			u8_t j;
 
 			for (j = i; j < 8; j++) {
 				if (UNALIGNED_GET(&w[j]) != 0) {
@@ -171,9 +171,9 @@
 	for (i = 0; i < len; i++) {
 		/* IPv4 address a.b.c.d */
 		if (len == 4) {
-			uint8_t l;
+			u8_t l;
 
-			value = (uint32_t)addr->s4_addr[i];
+			value = (u32_t)addr->s4_addr[i];
 
 			/* net_byte_to_udec() eats 0 */
 			if (value == 0) {
@@ -208,7 +208,7 @@
 			needcolon = false;
 		}
 
-		value = (uint32_t)sys_be16_to_cpu(UNALIGNED_GET(&w[i]));
+		value = (u32_t)sys_be16_to_cpu(UNALIGNED_GET(&w[i]));
 		bh = value >> 8;
 		bl = value & 0xff;
 
@@ -373,10 +373,10 @@
 	return 0;
 }
 
-static uint16_t calc_chksum(uint16_t sum, const uint8_t *ptr, uint16_t len)
+static u16_t calc_chksum(u16_t sum, const u8_t *ptr, u16_t len)
 {
-	uint16_t tmp;
-	const uint8_t *end;
+	u16_t tmp;
+	const u8_t *end;
 
 	end = ptr + len - 1;
 
@@ -400,14 +400,14 @@
 	return sum;
 }
 
-static inline uint16_t calc_chksum_pkt(uint16_t sum, struct net_pkt *pkt,
-				       uint16_t upper_layer_len)
+static inline u16_t calc_chksum_pkt(u16_t sum, struct net_pkt *pkt,
+				       u16_t upper_layer_len)
 {
 	struct net_buf *frag = pkt->frags;
-	uint16_t proto_len = net_pkt_ip_hdr_len(pkt) +
+	u16_t proto_len = net_pkt_ip_hdr_len(pkt) +
 		net_pkt_ipv6_ext_len(pkt);
-	int16_t len = frag->len - proto_len;
-	uint8_t *ptr = frag->data + proto_len;
+	s16_t len = frag->len - proto_len;
+	u8_t *ptr = frag->data + proto_len;
 
 	ARG_UNUSED(upper_layer_len);
 
@@ -428,7 +428,7 @@
 
 		/* Do we need to take first byte from next fragment */
 		if (len % 2) {
-			uint16_t tmp = *ptr;
+			u16_t tmp = *ptr;
 			sum += tmp;
 			if (sum < tmp) {
 				sum++;
@@ -443,10 +443,10 @@
 	return sum;
 }
 
-uint16_t net_calc_chksum(struct net_pkt *pkt, uint8_t proto)
+u16_t net_calc_chksum(struct net_pkt *pkt, u8_t proto)
 {
-	uint16_t upper_layer_len;
-	uint16_t sum;
+	u16_t upper_layer_len;
+	u16_t sum;
 
 	switch (net_pkt_family(pkt)) {
 #if defined(CONFIG_NET_IPV4)
@@ -462,7 +462,7 @@
 						 upper_layer_len));
 		} else {
 			sum = calc_chksum(upper_layer_len + proto,
-					  (uint8_t *)&NET_IPV4_HDR(pkt)->src,
+					  (u8_t *)&NET_IPV4_HDR(pkt)->src,
 					  2 * sizeof(struct in_addr));
 		}
 		break;
@@ -472,7 +472,7 @@
 		upper_layer_len = (NET_IPV6_HDR(pkt)->len[0] << 8) +
 			NET_IPV6_HDR(pkt)->len[1] - net_pkt_ipv6_ext_len(pkt);
 		sum = calc_chksum(upper_layer_len + proto,
-				  (uint8_t *)&NET_IPV6_HDR(pkt)->src,
+				  (u8_t *)&NET_IPV6_HDR(pkt)->src,
 				  2 * sizeof(struct in6_addr));
 		break;
 #endif
@@ -489,11 +489,11 @@
 }
 
 #if defined(CONFIG_NET_IPV4)
-uint16_t net_calc_chksum_ipv4(struct net_pkt *pkt)
+u16_t net_calc_chksum_ipv4(struct net_pkt *pkt)
 {
-	uint16_t sum;
+	u16_t sum;
 
-	sum = calc_chksum(0, (uint8_t *)NET_IPV4_HDR(pkt), NET_IPV4H_LEN);
+	sum = calc_chksum(0, (u8_t *)NET_IPV4_HDR(pkt), NET_IPV4H_LEN);
 
 	sum = (sum == 0) ? 0xffff : htons(sum);
 
diff --git a/subsys/net/lib/dns/dns_pack.c b/subsys/net/lib/dns/dns_pack.c
index cdf2bcd..7ddd361 100644
--- a/subsys/net/lib/dns/dns_pack.c
+++ b/subsys/net/lib/dns/dns_pack.c
@@ -34,22 +34,22 @@
 #define DNS_FLAGS1		DNS_RECURSION	/* QR, Opcode, AA, and TC = 0 */
 #define DNS_FLAGS2		0		/* RA, Z and RCODE = 0 */
 
-static inline uint16_t dns_strlen(const char *str)
+static inline u16_t dns_strlen(const char *str)
 {
 	if (str == NULL) {
 		return 0;
 	}
-	return (uint16_t)strlen(str);
+	return (u16_t)strlen(str);
 }
 
-int dns_msg_pack_qname(uint16_t *len, uint8_t *buf, uint16_t size,
+int dns_msg_pack_qname(u16_t *len, u8_t *buf, u16_t size,
 		       const char *domain_name)
 {
-	uint16_t dn_size;
-	uint16_t lb_start;
-	uint16_t lb_index;
-	uint16_t lb_size;
-	uint16_t i;
+	u16_t dn_size;
+	u16_t lb_start;
+	u16_t lb_index;
+	u16_t lb_size;
+	u16_t i;
 
 	lb_start = 0;
 	lb_index = 1;
@@ -90,19 +90,19 @@
 }
 
 static inline void set_dns_msg_response(struct dns_msg_t *dns_msg, int type,
-					uint16_t pos, uint16_t len)
+					u16_t pos, u16_t len)
 {
 	dns_msg->response_type = type;
 	dns_msg->response_position = pos;
 	dns_msg->response_length = len;
 }
 
-int dns_unpack_answer(struct dns_msg_t *dns_msg, int dname_ptr, uint32_t *ttl)
+int dns_unpack_answer(struct dns_msg_t *dns_msg, int dname_ptr, u32_t *ttl)
 {
-	uint16_t buf_size;
-	uint16_t pos;
-	uint16_t len;
-	uint8_t *answer;
+	u16_t buf_size;
+	u16_t pos;
+	u16_t len;
+	u8_t *answer;
 	int ptr;
 
 	answer = dns_msg->msg + dns_msg->answer_offset;
@@ -166,8 +166,8 @@
 
 int dns_unpack_response_header(struct dns_msg_t *msg, int src_id)
 {
-	uint8_t *dns_header;
-	uint16_t size;
+	u8_t *dns_header;
+	u16_t size;
 	int qdcount;
 	int ancount;
 	int rc;
@@ -213,15 +213,15 @@
 	return 0;
 }
 
-static int dns_msg_pack_query_header(uint8_t *buf, uint16_t size, uint16_t id)
+static int dns_msg_pack_query_header(u8_t *buf, u16_t size, u16_t id)
 {
-	uint16_t offset;
+	u16_t offset;
 
 	if (size < DNS_MSG_HEADER_SIZE) {
 		return -ENOMEM;
 	}
 
-	UNALIGNED_PUT(htons(id), (uint16_t *)(buf));
+	UNALIGNED_PUT(htons(id), (u16_t *)(buf));
 
 	/* RD = 1, TC = 0, AA = 0, Opcode = 0, QR = 0 <-> 0x01 (1B)
 	 * RCode = 0, Z = 0, RA = 0		      <-> 0x00 (1B)
@@ -238,25 +238,25 @@
 
 	offset += DNS_HEADER_FLAGS_LEN;
 	/* set question counter */
-	UNALIGNED_PUT(htons(1), (uint16_t *)(buf + offset));
+	UNALIGNED_PUT(htons(1), (u16_t *)(buf + offset));
 
 	offset += DNS_QDCOUNT_LEN;
 	/* set answer and ns rr */
-	UNALIGNED_PUT(0, (uint32_t *)(buf + offset));
+	UNALIGNED_PUT(0, (u32_t *)(buf + offset));
 
 	offset += DNS_ANCOUNT_LEN + DNS_NSCOUNT_LEN;
 	/* set the additional records */
-	UNALIGNED_PUT(0, (uint16_t *)(buf + offset));
+	UNALIGNED_PUT(0, (u16_t *)(buf + offset));
 
 	return 0;
 }
 
-int dns_msg_pack_query(uint8_t *buf, uint16_t *len, uint16_t size,
-		       uint8_t *qname, uint16_t qname_len, uint16_t id,
+int dns_msg_pack_query(u8_t *buf, u16_t *len, u16_t size,
+		       u8_t *qname, u16_t qname_len, u16_t id,
 		       enum dns_rr_type qtype)
 {
-	uint16_t msg_size;
-	uint16_t offset;
+	u16_t msg_size;
+	u16_t offset;
 	int rc;
 
 	msg_size = DNS_MSG_HEADER_SIZE + DNS_QTYPE_LEN + DNS_QCLASS_LEN;
@@ -275,18 +275,18 @@
 	offset += qname_len;
 
 	/* QType */
-	UNALIGNED_PUT(htons(qtype), (uint16_t *)(buf + offset + 0));
+	UNALIGNED_PUT(htons(qtype), (u16_t *)(buf + offset + 0));
 	offset += DNS_QTYPE_LEN;
 
 	/* QClass */
-	UNALIGNED_PUT(htons(DNS_CLASS_IN), (uint16_t *)(buf + offset));
+	UNALIGNED_PUT(htons(DNS_CLASS_IN), (u16_t *)(buf + offset));
 
 	*len = offset + DNS_QCLASS_LEN;
 
 	return 0;
 }
 
-static int dns_find_null(int *qname_size, uint8_t *buf, uint16_t size)
+static int dns_find_null(int *qname_size, u8_t *buf, u16_t size)
 {
 	*qname_size = 0;
 	while (*qname_size < size) {
@@ -300,8 +300,8 @@
 
 int dns_unpack_response_query(struct dns_msg_t *dns_msg)
 {
-	uint8_t *dns_query;
-	uint8_t *buf;
+	u8_t *dns_query;
+	u8_t *buf;
 	int remaining_size;
 	int qname_size;
 	int offset;
@@ -341,12 +341,12 @@
 	return 0;
 }
 
-int dns_copy_qname(uint8_t *buf, uint16_t *len, uint16_t size,
-		   struct dns_msg_t *dns_msg, uint16_t pos)
+int dns_copy_qname(u8_t *buf, u16_t *len, u16_t size,
+		   struct dns_msg_t *dns_msg, u16_t pos)
 {
-	uint16_t msg_size = dns_msg->msg_size;
-	uint8_t *msg = dns_msg->msg;
-	uint16_t lb_size;
+	u16_t msg_size = dns_msg->msg_size;
+	u8_t *msg = dns_msg->msg;
+	u16_t lb_size;
 	int rc = -EINVAL;
 	int i = 0;
 
@@ -365,7 +365,7 @@
 
 		/* pointer */
 		if (lb_size > DNS_LABEL_MAX_SIZE) {
-			uint8_t mask = DNS_LABEL_MAX_SIZE;
+			u8_t mask = DNS_LABEL_MAX_SIZE;
 
 			if (pos + 1 >= msg_size) {
 				rc = -ENOMEM;
diff --git a/subsys/net/lib/dns/dns_pack.h b/subsys/net/lib/dns/dns_pack.h
index 3d41a7d..7712104 100644
--- a/subsys/net/lib/dns/dns_pack.h
+++ b/subsys/net/lib/dns/dns_pack.h
@@ -35,15 +35,15 @@
  *     + response_length: this is an offset. It holds the response's length.
  */
 struct dns_msg_t {
-	uint8_t *msg;
-	uint16_t msg_size;
+	u8_t *msg;
+	u16_t msg_size;
 
 	int response_type;
-	uint16_t response_position;
-	uint16_t response_length;
+	u16_t response_position;
+	u16_t response_length;
 
-	uint16_t query_offset;
-	uint16_t answer_offset;
+	u16_t query_offset;
+	u16_t answer_offset;
 };
 
 #define DNS_MSG_INIT(b, s)	{.msg = b, .msg_size = s,	\
@@ -84,123 +84,123 @@
 };
 
 /** It returns the ID field in the DNS msg header	*/
-static inline int dns_header_id(uint8_t *header)
+static inline int dns_header_id(u8_t *header)
 {
-	return htons(UNALIGNED_GET((uint16_t *)(header)));
+	return htons(UNALIGNED_GET((u16_t *)(header)));
 }
 
 /* inline unpack routines are used to unpack data from network
  * order to cpu. Similar routines without the unpack prefix are
  * used for cpu to network order.
  */
-static inline int dns_unpack_header_id(uint8_t *header)
+static inline int dns_unpack_header_id(u8_t *header)
 {
-	return ntohs(UNALIGNED_GET((uint16_t *)(header)));
+	return ntohs(UNALIGNED_GET((u16_t *)(header)));
 }
 
 /** It returns the QR field in the DNS msg header	*/
-static inline int dns_header_qr(uint8_t *header)
+static inline int dns_header_qr(u8_t *header)
 {
 	return ((*(header + 2)) & 0x80) ? 1 : 0;
 }
 
 /** It returns the OPCODE field in the DNS msg header	*/
-static inline int dns_header_opcode(uint8_t *header)
+static inline int dns_header_opcode(u8_t *header)
 {
 	return ((*(header + 2)) & 0x70) >> 1;
 }
 
 /** It returns the AA field in the DNS msg header	*/
-static inline int dns_header_aa(uint8_t *header)
+static inline int dns_header_aa(u8_t *header)
 {
 	return ((*(header + 2)) & 0x04) ? 1 : 0;
 }
 
 /** It returns the TC field in the DNS msg header	*/
-static inline int dns_header_tc(uint8_t *header)
+static inline int dns_header_tc(u8_t *header)
 {
 	return ((*(header + 2)) & 0x02) ? 1 : 0;
 }
 
 /** It returns the RD field in the DNS msg header	*/
-static inline int dns_header_rd(uint8_t *header)
+static inline int dns_header_rd(u8_t *header)
 {
 	return ((*(header + 2)) & 0x01) ? 1 : 0;
 }
 
 /** It returns the RA field in the DNS msg header	*/
-static inline int dns_header_ra(uint8_t *header)
+static inline int dns_header_ra(u8_t *header)
 {
 	return ((*(header + 3)) & 0x80) >> 7;
 }
 
 /** It returns the Z field in the DNS msg header	*/
-static inline int dns_header_z(uint8_t *header)
+static inline int dns_header_z(u8_t *header)
 {
 	return ((*(header + 3)) & 0x70) >> 4;
 }
 
 /** It returns the RCODE field in the DNS msg header	*/
-static inline int dns_header_rcode(uint8_t *header)
+static inline int dns_header_rcode(u8_t *header)
 {
 	return ((*(header + 3)) & 0x0F);
 }
 
 /** It returns the QDCOUNT field in the DNS msg header	*/
-static inline int dns_header_qdcount(uint8_t *header)
+static inline int dns_header_qdcount(u8_t *header)
 {
-	return htons(UNALIGNED_GET((uint16_t *)(header + 4)));
+	return htons(UNALIGNED_GET((u16_t *)(header + 4)));
 }
 
-static inline int dns_unpack_header_qdcount(uint8_t *header)
+static inline int dns_unpack_header_qdcount(u8_t *header)
 {
-	return ntohs(UNALIGNED_GET((uint16_t *)(header + 4)));
+	return ntohs(UNALIGNED_GET((u16_t *)(header + 4)));
 }
 
 /** It returns the ANCOUNT field in the DNS msg header	*/
-static inline int dns_header_ancount(uint8_t *header)
+static inline int dns_header_ancount(u8_t *header)
 {
-	return htons(UNALIGNED_GET((uint16_t *)(header + 6)));
+	return htons(UNALIGNED_GET((u16_t *)(header + 6)));
 }
 
-static inline int dns_unpack_header_ancount(uint8_t *header)
+static inline int dns_unpack_header_ancount(u8_t *header)
 {
-	return ntohs(UNALIGNED_GET((uint16_t *)(header + 6)));
+	return ntohs(UNALIGNED_GET((u16_t *)(header + 6)));
 }
 
 /** It returns the NSCOUNT field in the DNS msg header	*/
-static inline int dns_header_nscount(uint8_t *header)
+static inline int dns_header_nscount(u8_t *header)
 {
-	return htons(UNALIGNED_GET((uint16_t *)(header + 8)));
+	return htons(UNALIGNED_GET((u16_t *)(header + 8)));
 }
 
 /** It returns the ARCOUNT field in the DNS msg header	*/
-static inline int dns_header_arcount(uint8_t *header)
+static inline int dns_header_arcount(u8_t *header)
 {
-	return htons(UNALIGNED_GET((uint16_t *)(header + 10)));
+	return htons(UNALIGNED_GET((u16_t *)(header + 10)));
 }
 
-static inline int dns_query_qtype(uint8_t *question)
+static inline int dns_query_qtype(u8_t *question)
 {
-	return htons(UNALIGNED_GET((uint16_t *)(question + 0)));
+	return htons(UNALIGNED_GET((u16_t *)(question + 0)));
 }
 
-static inline int dns_unpack_query_qtype(uint8_t *question)
+static inline int dns_unpack_query_qtype(u8_t *question)
 {
-	return ntohs(UNALIGNED_GET((uint16_t *)(question + 0)));
+	return ntohs(UNALIGNED_GET((u16_t *)(question + 0)));
 }
 
-static inline int dns_query_qclass(uint8_t *question)
+static inline int dns_query_qclass(u8_t *question)
 {
-	return htons(UNALIGNED_GET((uint16_t *)(question + 2)));
+	return htons(UNALIGNED_GET((u16_t *)(question + 2)));
 }
 
-static inline int dns_unpack_query_qclass(uint8_t *question)
+static inline int dns_unpack_query_qclass(u8_t *question)
 {
-	return ntohs(UNALIGNED_GET((uint16_t *)(question + 2)));
+	return ntohs(UNALIGNED_GET((u16_t *)(question + 2)));
 }
 
-static inline int dns_answer_type(uint16_t dname_size, uint8_t *answer)
+static inline int dns_answer_type(u16_t dname_size, u8_t *answer)
 {
 	/** Future versions must consider byte 0
 	 * 4.1.3. Resource record format
@@ -209,7 +209,7 @@
 	return *(answer + dname_size + 1);
 }
 
-static inline int dns_answer_class(uint16_t dname_size, uint8_t *answer)
+static inline int dns_answer_class(u16_t dname_size, u8_t *answer)
 {
 	/** Future versions must consider byte 2
 	 * 4.1.3. Resource record format
@@ -218,15 +218,15 @@
 	return *(answer + dname_size + 3);
 }
 
-static inline int dns_answer_ttl(uint16_t dname_size, uint8_t *answer)
+static inline int dns_answer_ttl(u16_t dname_size, u8_t *answer)
 {
-	return ntohl(UNALIGNED_GET((uint32_t *)(answer + dname_size + 4)));
+	return ntohl(UNALIGNED_GET((u32_t *)(answer + dname_size + 4)));
 }
 
-static inline int dns_answer_rdlength(uint16_t dname_size,
-					     uint8_t *answer)
+static inline int dns_answer_rdlength(u16_t dname_size,
+					     u8_t *answer)
 {
-	return ntohs(UNALIGNED_GET((uint16_t *)(answer + dname_size + 8)));
+	return ntohs(UNALIGNED_GET((u16_t *)(answer + dname_size + 8)));
 }
 
 /**
@@ -240,7 +240,7 @@
  * @retval -ENOMEM if there is no enough space to store the resultant QNAME
  * @retval -EINVAL if an invalid parameter was passed as an argument
  */
-int dns_msg_pack_qname(uint16_t *len, uint8_t *buf, uint16_t size,
+int dns_msg_pack_qname(u16_t *len, u8_t *buf, u16_t size,
 		       const char *domain_name);
 
 /**
@@ -253,7 +253,7 @@
  * @retval 0 on success
  * @retval -ENOMEM on error
  */
-int dns_unpack_answer(struct dns_msg_t *dns_msg, int dname_ptr, uint32_t *ttl);
+int dns_unpack_answer(struct dns_msg_t *dns_msg, int dname_ptr, u32_t *ttl);
 
 /**
  * Unpacks the header's response.
@@ -288,8 +288,8 @@
  * @retval On error, a negative value is returned.
  * See: dns_msg_pack_query_header and  dns_msg_pack_qname.
  */
-int dns_msg_pack_query(uint8_t *buf, uint16_t *len, uint16_t size,
-		       uint8_t *qname, uint16_t qname_len, uint16_t id,
+int dns_msg_pack_query(u8_t *buf, u16_t *len, u16_t size,
+		       u8_t *qname, u16_t qname_len, u16_t id,
 		       enum dns_rr_type qtype);
 
 /**
@@ -325,7 +325,7 @@
  * @retval -EINVAL if an invalid parameter was passed as an argument
  * @retval -ENOMEM if the label's size is corrupted
  */
-int dns_copy_qname(uint8_t *buf, uint16_t *len, uint16_t size,
-		   struct dns_msg_t *dns_msg, uint16_t pos);
+int dns_copy_qname(u8_t *buf, u16_t *len, u16_t size,
+		   struct dns_msg_t *dns_msg, u16_t pos);
 
 #endif
diff --git a/subsys/net/lib/dns/resolve.c b/subsys/net/lib/dns/resolve.c
index c26a36b..c2b7716 100644
--- a/subsys/net/lib/dns/resolve.c
+++ b/subsys/net/lib/dns/resolve.c
@@ -88,7 +88,7 @@
 	struct sockaddr *local_addr = NULL;
 	socklen_t addr_len = 0;
 	int i = 0, idx = 0;
-	uint16_t port = 0;
+	u16_t port = 0;
 	int ret, count;
 
 	if (!ctx) {
@@ -344,7 +344,7 @@
 }
 
 static inline int get_slot_by_id(struct dns_resolve_context *ctx,
-				 uint16_t dns_id)
+				 u16_t dns_id)
 {
 	int i;
 
@@ -360,14 +360,14 @@
 static int dns_read(struct dns_resolve_context *ctx,
 		    struct net_pkt *pkt,
 		    struct net_buf *dns_data,
-		    uint16_t *dns_id,
+		    u16_t *dns_id,
 		    struct net_buf *dns_cname,
 		    struct dns_addrinfo *info)
 {
 	/* Helper struct to track the dns msg received from the server */
 	struct dns_msg_t dns_msg;
-	uint32_t ttl; /* RR ttl, so far it is not passed to caller */
-	uint8_t *src, *addr;
+	u32_t ttl; /* RR ttl, so far it is not passed to caller */
+	u8_t *src, *addr;
 	int address_size;
 	/* index that points to the current answer being analyzed */
 	int answer_ptr;
@@ -429,13 +429,13 @@
 
 	if (ctx->queries[query_idx].query_type == DNS_QUERY_TYPE_A) {
 		address_size = DNS_IPV4_LEN;
-		addr = (uint8_t *)&net_sin(&info->ai_addr)->sin_addr;
+		addr = (u8_t *)&net_sin(&info->ai_addr)->sin_addr;
 		info->ai_family = AF_INET;
 		info->ai_addr.family = AF_INET;
 		info->ai_addrlen = sizeof(struct sockaddr_in);
 	} else if (ctx->queries[query_idx].query_type == DNS_QUERY_TYPE_AAAA) {
 		address_size = DNS_IPV6_LEN;
-		addr = (uint8_t *)&net_sin6(&info->ai_addr)->sin6_addr;
+		addr = (u8_t *)&net_sin6(&info->ai_addr)->sin6_addr;
 		info->ai_family = AF_INET6;
 		info->ai_addr.family = AF_INET6;
 		info->ai_addrlen = sizeof(struct sockaddr_in6);
@@ -496,7 +496,7 @@
 	 */
 	if (items == 0) {
 		if (dns_msg.response_type == DNS_RESPONSE_CNAME_NO_IP) {
-			uint16_t pos = dns_msg.response_position;
+			u16_t pos = dns_msg.response_position;
 
 			ret = dns_copy_qname(dns_cname->data, &dns_cname->len,
 					     dns_cname->size, &dns_msg, pos);
@@ -548,7 +548,7 @@
 	struct dns_addrinfo info = { 0 };
 	struct net_buf *dns_cname = NULL;
 	struct net_buf *dns_data = NULL;
-	uint16_t dns_id = 0;
+	u16_t dns_id = 0;
 	int ret, i;
 
 	ARG_UNUSED(net_ctx);
@@ -645,7 +645,7 @@
 	struct sockaddr *server;
 	struct net_pkt *pkt;
 	int server_addr_len;
-	uint16_t dns_id;
+	u16_t dns_id;
 	int ret;
 
 	net_ctx = ctx->servers[server_idx].net_ctx;
@@ -711,7 +711,7 @@
 	return ret;
 }
 
-int dns_resolve_cancel(struct dns_resolve_context *ctx, uint16_t dns_id)
+int dns_resolve_cancel(struct dns_resolve_context *ctx, u16_t dns_id)
 {
 	int i;
 
@@ -745,10 +745,10 @@
 int dns_resolve_name(struct dns_resolve_context *ctx,
 		     const char *query,
 		     enum dns_query_type type,
-		     uint16_t *dns_id,
+		     u16_t *dns_id,
 		     dns_resolve_cb_t cb,
 		     void *user_data,
-		     int32_t timeout)
+		     s32_t timeout)
 {
 	struct net_buf *dns_data;
 	struct net_buf *dns_qname = NULL;
diff --git a/subsys/net/lib/http/http_client.c b/subsys/net/lib/http/http_client.c
index cbf574f..53c8786 100644
--- a/subsys/net/lib/http/http_client.c
+++ b/subsys/net/lib/http/http_client.c
@@ -16,7 +16,7 @@
 #define HTTP_CONTENT_TYPE  "Content-Type: "
 #define HTTP_CONT_LEN_SIZE 64
 
-int http_request(struct net_context *net_ctx, int32_t timeout,
+int http_request(struct net_context *net_ctx, s32_t timeout,
 		 struct http_client_request *req)
 {
 	struct net_pkt *tx;
@@ -27,36 +27,36 @@
 		return -ENOMEM;
 	}
 
-	if (!net_pkt_append(tx, strlen(req->method), (uint8_t *)req->method,
+	if (!net_pkt_append(tx, strlen(req->method), (u8_t *)req->method,
 			    timeout)) {
 		goto lb_exit;
 	}
 
-	if (!net_pkt_append(tx, strlen(req->url), (uint8_t *)req->url,
+	if (!net_pkt_append(tx, strlen(req->url), (u8_t *)req->url,
 			    timeout)) {
 		goto lb_exit;
 	}
 
 	if (!net_pkt_append(tx, strlen(req->protocol),
-			    (uint8_t *)req->protocol, timeout)) {
+			    (u8_t *)req->protocol, timeout)) {
 		goto lb_exit;
 	}
 
 	if (!net_pkt_append(tx, strlen(req->header_fields),
-			    (uint8_t *)req->header_fields,
+			    (u8_t *)req->header_fields,
 			    timeout)) {
 		goto lb_exit;
 	}
 
 	if (req->content_type_value) {
 		if (!net_pkt_append(tx, strlen(HTTP_CONTENT_TYPE),
-				    (uint8_t *)HTTP_CONTENT_TYPE,
+				    (u8_t *)HTTP_CONTENT_TYPE,
 				    timeout)) {
 			goto lb_exit;
 		}
 
 		if (!net_pkt_append(tx, strlen(req->content_type_value),
-				    (uint8_t *)req->content_type_value,
+				    (u8_t *)req->content_type_value,
 				    timeout)) {
 			goto lb_exit;
 		}
@@ -73,14 +73,14 @@
 			goto lb_exit;
 		}
 
-		if (!net_pkt_append(tx, rc, (uint8_t *)content_len_str,
+		if (!net_pkt_append(tx, rc, (u8_t *)content_len_str,
 				    timeout)) {
 			rc = -ENOMEM;
 			goto lb_exit;
 		}
 
 		if (!net_pkt_append(tx, req->payload_size,
-				    (uint8_t *)req->payload,
+				    (u8_t *)req->payload,
 				    timeout)) {
 			rc = -ENOMEM;
 			goto lb_exit;
@@ -88,7 +88,7 @@
 
 	} else {
 		if (!net_pkt_append(tx, strlen(HTTP_EOF),
-				    (uint8_t *)HTTP_EOF,
+				    (u8_t *)HTTP_EOF,
 				    timeout)) {
 			goto lb_exit;
 		}
@@ -102,7 +102,7 @@
 	return rc;
 }
 
-int http_request_get(struct net_context *net_ctx, int32_t timeout, char *url,
+int http_request_get(struct net_context *net_ctx, s32_t timeout, char *url,
 		     char *header_fields)
 {
 	struct http_client_request req = {
@@ -114,7 +114,7 @@
 	return http_request(net_ctx, timeout, &req);
 }
 
-int http_request_head(struct net_context *net_ctx, int32_t timeout, char *url,
+int http_request_head(struct net_context *net_ctx, s32_t timeout, char *url,
 		      char *header_fields)
 {
 	struct http_client_request req = {
@@ -126,7 +126,7 @@
 	return http_request(net_ctx, timeout, &req);
 }
 
-int http_request_options(struct net_context *net_ctx, int32_t timeout,
+int http_request_options(struct net_context *net_ctx, s32_t timeout,
 			 char *url, char *header_fields)
 {
 	struct http_client_request req = {
@@ -138,7 +138,7 @@
 	return http_request(net_ctx, timeout, &req);
 }
 
-int http_request_post(struct net_context *net_ctx, int32_t timeout, char *url,
+int http_request_post(struct net_context *net_ctx, s32_t timeout, char *url,
 		      char *header_fields, char *content_type_value,
 		      char *payload)
 {
diff --git a/subsys/net/lib/http/http_parser.c b/subsys/net/lib/http/http_parser.c
index 07139b8..36a3378 100644
--- a/subsys/net/lib/http/http_parser.c
+++ b/subsys/net/lib/http/http_parser.c
@@ -30,7 +30,7 @@
 #include <limits.h>
 
 #ifndef ULLONG_MAX
-# define ULLONG_MAX ((uint64_t) -1) /* 2^64-1 */
+# define ULLONG_MAX ((u64_t) -1) /* 2^64-1 */
 #endif
 
 #ifndef MIN
@@ -159,7 +159,7 @@
 
 
 static const
-int8_t unhex[256] = {
+s8_t unhex[256] = {
 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
@@ -178,7 +178,7 @@
 #endif
 
 
-static const uint8_t normal_url_char[32] = {
+static const u8_t normal_url_char[32] = {
 /*   0 nul    1 soh    2 stx    3 etx    4 eot    5 enq    6 ack    7 bel  */
 	0    |   0    |   0    |   0    |   0    |   0    |   0    |   0,
 /*   8 bs     9 ht    10 nl    11 vt    12 np    13 cr    14 so    15 si   */
@@ -805,8 +805,8 @@
 		break;
 
 	case h_content_length: {
-		uint64_t t;
-		uint64_t value;
+		u64_t t;
+		u64_t value;
 
 		if (ch == ' ') {
 			break;
@@ -1005,7 +1005,7 @@
 	const char *url_mark = 0;
 	const char *body_mark = 0;
 	const char *status_mark = 0;
-	int8_t unhex_val;
+	s8_t unhex_val;
 	int rc;
 	char ch;
 	char c;
@@ -1461,7 +1461,7 @@
 				; /* nada */
 			} else if (IS_ALPHA(ch)) {
 
-				uint64_t sw_option = parser->method << 16 |
+				u64_t sw_option = parser->method << 16 |
 						     parser->index << 8 | ch;
 				switch (sw_option) {
 				case (HTTP_POST << 16 | 1 << 8 | 'U'):
@@ -2235,8 +2235,8 @@
 		}
 
 		case s_body_identity: {
-			uint64_t to_read = MIN(parser->content_length,
-					       (uint64_t) ((data + len) - p));
+			u64_t to_read = MIN(parser->content_length,
+					       (u64_t) ((data + len) - p));
 
 			assert(parser->content_length != 0
 			       && parser->content_length != ULLONG_MAX);
@@ -2331,7 +2331,7 @@
 		}
 
 		case s_chunk_size: {
-			uint64_t t;
+			u64_t t;
 
 			assert(parser->flags & F_CHUNKED);
 
@@ -2359,7 +2359,7 @@
 			/* Overflow? Test against a conservative limit for
 			 * simplicity.
 			 */
-			uint64_t ulong_value = (ULLONG_MAX - 16) / 16;
+			u64_t ulong_value = (ULLONG_MAX - 16) / 16;
 
 			if (UNLIKELY(ulong_value < parser->content_length)) {
 				SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
@@ -2408,8 +2408,8 @@
 		}
 
 		case s_chunk_data: {
-			uint64_t to_read = MIN(parser->content_length,
-					       (uint64_t) ((data + len) - p));
+			u64_t to_read = MIN(parser->content_length,
+					       (u64_t) ((data + len) - p));
 
 			assert(parser->flags & F_CHUNKED);
 			assert(parser->content_length != 0
@@ -2900,7 +2900,7 @@
 			return 1;
 		}
 
-		u->port = (uint16_t) v;
+		u->port = (u16_t) v;
 	}
 
 	return 0;
diff --git a/subsys/net/lib/http/http_server.c b/subsys/net/lib/http/http_server.c
index 7c3630b..5428c72 100644
--- a/subsys/net/lib/http/http_server.c
+++ b/subsys/net/lib/http/http_server.c
@@ -23,7 +23,7 @@
 #define HTTP_STATUS_404_NF	"HTTP/1.1 404 Not Found\r\n" \
 				"\r\n"
 
-static inline uint16_t http_strlen(const char *str)
+static inline u16_t http_strlen(const char *str)
 {
 	if (str) {
 		return strlen(str);
@@ -32,20 +32,20 @@
 	return 0;
 }
 
-static int http_add_header(struct net_pkt *tx, int32_t timeout, const char *str)
+static int http_add_header(struct net_pkt *tx, s32_t timeout, const char *str)
 {
-	if (net_pkt_append(tx, strlen(str), (uint8_t *)str, timeout)) {
+	if (net_pkt_append(tx, strlen(str), (u8_t *)str, timeout)) {
 		return 0;
 	}
 
 	return -ENOMEM;
 }
 
-static int http_add_chunk(struct net_pkt *tx, int32_t timeout, const char *str)
+static int http_add_chunk(struct net_pkt *tx, s32_t timeout, const char *str)
 {
 	char chunk_header[16];
 	char *rn = "\r\n";
-	uint16_t str_len;
+	u16_t str_len;
 
 	str_len = http_strlen(str);
 
@@ -56,7 +56,7 @@
 	}
 
 	if (str_len > 0) {
-		if (!net_pkt_append(tx, str_len, (uint8_t *)str, timeout)) {
+		if (!net_pkt_append(tx, str_len, (u8_t *)str, timeout)) {
 			return -ENOMEM;
 		}
 	}
diff --git a/subsys/net/lib/mqtt/mqtt.c b/subsys/net/lib/mqtt/mqtt.c
index 9a4f696..f6049a8 100644
--- a/subsys/net/lib/mqtt/mqtt.c
+++ b/subsys/net/lib/mqtt/mqtt.c
@@ -71,8 +71,8 @@
 {
 	struct net_pkt *tx = NULL;
 	/* DISCONNECT is a zero length message: 2 bytes required, no payload */
-	uint8_t msg[2];
-	uint16_t len;
+	u8_t msg[2];
+	u16_t len;
 	int rc;
 
 	rc = mqtt_pack_disconnect(msg, &len, sizeof(msg));
@@ -125,12 +125,12 @@
  * @retval -EIO on network error
  */
 static
-int mqtt_tx_pub_msgs(struct mqtt_ctx *ctx, uint16_t id,
+int mqtt_tx_pub_msgs(struct mqtt_ctx *ctx, u16_t id,
 		     enum mqtt_packet pkt_type)
 {
 	struct net_pkt *tx = NULL;
-	uint8_t msg[4];
-	uint16_t len;
+	u8_t msg[4];
+	u16_t len;
 	int rc;
 
 	switch (pkt_type) {
@@ -180,22 +180,22 @@
 	return rc;
 }
 
-int mqtt_tx_puback(struct mqtt_ctx *ctx, uint16_t id)
+int mqtt_tx_puback(struct mqtt_ctx *ctx, u16_t id)
 {
 	return mqtt_tx_pub_msgs(ctx, id, MQTT_PUBACK);
 }
 
-int mqtt_tx_pubcomp(struct mqtt_ctx *ctx, uint16_t id)
+int mqtt_tx_pubcomp(struct mqtt_ctx *ctx, u16_t id)
 {
 	return mqtt_tx_pub_msgs(ctx, id, MQTT_PUBCOMP);
 }
 
-int mqtt_tx_pubrec(struct mqtt_ctx *ctx, uint16_t id)
+int mqtt_tx_pubrec(struct mqtt_ctx *ctx, u16_t id)
 {
 	return mqtt_tx_pub_msgs(ctx, id, MQTT_PUBREC);
 }
 
-int mqtt_tx_pubrel(struct mqtt_ctx *ctx, uint16_t id)
+int mqtt_tx_pubrel(struct mqtt_ctx *ctx, u16_t id)
 {
 	return mqtt_tx_pub_msgs(ctx, id, MQTT_PUBREL);
 }
@@ -245,8 +245,8 @@
 int mqtt_tx_pingreq(struct mqtt_ctx *ctx)
 {
 	struct net_pkt *tx = NULL;
-	uint8_t msg[2];
-	uint16_t len;
+	u8_t msg[2];
+	u16_t len;
 	int rc;
 
 	rc = mqtt_pack_pingreq(msg, &len, sizeof(msg));
@@ -281,7 +281,7 @@
 	return rc;
 }
 
-int mqtt_tx_subscribe(struct mqtt_ctx *ctx, uint16_t pkt_id, uint8_t items,
+int mqtt_tx_subscribe(struct mqtt_ctx *ctx, u16_t pkt_id, u8_t items,
 		      const char *topics[], const enum mqtt_qos qos[])
 {
 	struct net_buf *data = NULL;
@@ -326,7 +326,7 @@
 	return rc;
 }
 
-int mqtt_tx_unsubscribe(struct mqtt_ctx *ctx, uint16_t pkt_id, uint8_t items,
+int mqtt_tx_unsubscribe(struct mqtt_ctx *ctx, u16_t pkt_id, u8_t items,
 			const char *topics[])
 {
 	struct net_buf *data = NULL;
@@ -372,10 +372,10 @@
 
 int mqtt_rx_connack(struct mqtt_ctx *ctx, struct net_buf *rx, int clean_session)
 {
-	uint16_t len;
-	uint8_t connect_rc;
-	uint8_t session;
-	uint8_t *data;
+	u16_t len;
+	u8_t connect_rc;
+	u8_t session;
+	u8_t *data;
 	int rc;
 
 	data = rx->data;
@@ -439,11 +439,11 @@
 int mqtt_rx_pub_msgs(struct mqtt_ctx *ctx, struct net_buf *rx,
 		     enum mqtt_packet type)
 {
-	int (*unpack)(uint8_t *, uint16_t, uint16_t *) = NULL;
-	int (*response)(struct mqtt_ctx *, uint16_t) = NULL;
-	uint16_t pkt_id;
-	uint16_t len;
-	uint8_t *data;
+	int (*unpack)(u8_t *, u16_t, u16_t *) = NULL;
+	int (*response)(struct mqtt_ctx *, u16_t) = NULL;
+	u16_t pkt_id;
+	u16_t len;
+	u8_t *data;
 	int rc;
 
 	switch (type) {
@@ -542,10 +542,10 @@
 int mqtt_rx_suback(struct mqtt_ctx *ctx, struct net_buf *rx)
 {
 	enum mqtt_qos suback_qos[CONFIG_MQTT_SUBSCRIBE_MAX_TOPICS];
-	uint16_t pkt_id;
-	uint16_t len;
-	uint8_t items;
-	uint8_t *data;
+	u16_t pkt_id;
+	u16_t len;
+	u8_t items;
+	u8_t *data;
 	int rc;
 
 	data = rx->data;
@@ -571,9 +571,9 @@
 
 int mqtt_rx_unsuback(struct mqtt_ctx *ctx, struct net_buf *rx)
 {
-	uint16_t pkt_id;
-	uint16_t len;
-	uint8_t *data;
+	u16_t pkt_id;
+	u16_t len;
+	u8_t *data;
 	int rc;
 
 	data = rx->data;
@@ -641,11 +641,11 @@
  */
 static
 struct net_buf *mqtt_linearize_packet(struct mqtt_ctx *ctx, struct net_pkt *rx,
-				      uint16_t min_size)
+				      u16_t min_size)
 {
 	struct net_buf *data = NULL;
-	uint16_t data_len;
-	uint16_t offset;
+	u16_t data_len;
+	u16_t offset;
 	int rc;
 
 	/* CONFIG_MQTT_MSG_MAX_SIZE is defined via Kconfig. So here it's
@@ -694,7 +694,7 @@
 static
 int mqtt_publisher_parser(struct mqtt_ctx *ctx, struct net_pkt *rx)
 {
-	uint16_t pkt_type = MQTT_INVALID;
+	u16_t pkt_type = MQTT_INVALID;
 	struct net_buf *data = NULL;
 	int rc = -EINVAL;
 
@@ -760,7 +760,7 @@
 static
 int mqtt_subscriber_parser(struct mqtt_ctx *ctx, struct net_pkt *rx)
 {
-	uint16_t pkt_type = MQTT_INVALID;
+	u16_t pkt_type = MQTT_INVALID;
 	struct net_buf *data = NULL;
 	int rc = 0;
 
diff --git a/subsys/net/lib/mqtt/mqtt_pkt.c b/subsys/net/lib/mqtt/mqtt_pkt.c
index 08cf82f..53150e5 100644
--- a/subsys/net/lib/mqtt/mqtt_pkt.c
+++ b/subsys/net/lib/mqtt/mqtt_pkt.c
@@ -68,10 +68,10 @@
  * @retval strlen otherwise
  */
 static inline
-uint16_t mqtt_strlen(const char *str)
+u16_t mqtt_strlen(const char *str)
 {
 	if (str) {
-		return (uint16_t)strlen(str);
+		return (u16_t)strlen(str);
 	}
 
 	return 0;
@@ -87,7 +87,7 @@
  * @retval -EINVAL
  */
 static
-int compute_rlen_size(uint16_t *size, uint32_t len)
+int compute_rlen_size(u16_t *size, u32_t len)
 {
 	if (len <= 127) {
 		*size = 1;
@@ -112,10 +112,10 @@
  *
  * @retval 0 always
  */
-static int rlen_encode(uint8_t *buf, uint32_t len)
+static int rlen_encode(u8_t *buf, u32_t len)
 {
-	uint8_t encoded;
-	uint8_t i;
+	u8_t encoded;
+	u8_t i;
 
 	i = 0;
 	do {
@@ -144,13 +144,13 @@
  * @retval 0 on success
  * @retval -ENOMEM if size < 4
  */
-static int rlen_decode(uint32_t *rlen, uint16_t *rlen_size,
-		       uint8_t *buf, uint16_t size)
+static int rlen_decode(u32_t *rlen, u16_t *rlen_size,
+		       u8_t *buf, u16_t size)
 {
-	uint32_t value = 0;
-	uint32_t mult = 1;
-	uint16_t i = 0;
-	uint8_t encoded;
+	u32_t value = 0;
+	u32_t mult = 1;
+	u16_t i = 0;
+	u8_t encoded;
 
 	do {
 		if (i >= ENCLENBUF_MAX_SIZE || i >= size) {
@@ -168,8 +168,8 @@
 	return 0;
 }
 
-int mqtt_pack_connack(uint8_t *buf, uint16_t *length, uint16_t size,
-		      uint8_t session_present, uint8_t ret_code)
+int mqtt_pack_connack(u8_t *buf, u16_t *length, u16_t size,
+		      u8_t session_present, u8_t ret_code)
 {
 	if (size < CONNACK_SIZE) {
 		return -ENOMEM;
@@ -203,8 +203,8 @@
  * @retval -ENOMEM if size < 4
  */
 static
-int pack_pkt_id(uint8_t *buf, uint16_t *length, uint16_t size,
-		enum mqtt_packet type, uint8_t reserved, uint16_t pkt_id)
+int pack_pkt_id(u8_t *buf, u16_t *length, u16_t size,
+		enum mqtt_packet type, u8_t reserved, u16_t pkt_id)
 {
 	if (size < MSG_PKTID_ONLY_SIZE) {
 		return -ENOMEM;
@@ -212,51 +212,51 @@
 
 	buf[0] = (type << 4) + (reserved & 0x0F);
 	buf[1] = PACKET_ID_SIZE;
-	UNALIGNED_PUT(htons(pkt_id), (uint16_t *)(buf + PACKET_ID_SIZE));
+	UNALIGNED_PUT(htons(pkt_id), (u16_t *)(buf + PACKET_ID_SIZE));
 	*length = MSG_PKTID_ONLY_SIZE;
 
 	return 0;
 }
 
-int mqtt_pack_puback(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id)
+int mqtt_pack_puback(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id)
 {
 	return pack_pkt_id(buf, length, size, MQTT_PUBACK, 0, pkt_id);
 }
 
-int mqtt_pack_pubrec(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id)
+int mqtt_pack_pubrec(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id)
 {
 	return pack_pkt_id(buf, length, size, MQTT_PUBREC, 0, pkt_id);
 }
 
-int mqtt_pack_pubrel(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id)
+int mqtt_pack_pubrel(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id)
 {
 	return pack_pkt_id(buf, length, size, MQTT_PUBREL, PUBREL_RESERVED,
 			   pkt_id);
 }
 
-int mqtt_pack_pubcomp(uint8_t *buf, uint16_t *length, uint16_t size,
-		      uint16_t pkt_id)
+int mqtt_pack_pubcomp(u8_t *buf, u16_t *length, u16_t size,
+		      u16_t pkt_id)
 {
 	return pack_pkt_id(buf, length, size, MQTT_PUBCOMP, 0, pkt_id);
 }
 
-int mqtt_pack_unsuback(uint8_t *buf, uint16_t *length, uint16_t size,
-		       uint16_t pkt_id)
+int mqtt_pack_unsuback(u8_t *buf, u16_t *length, u16_t size,
+		       u16_t pkt_id)
 {
 	return pack_pkt_id(buf, length, size, MQTT_UNSUBACK, 0, pkt_id);
 }
 
-int mqtt_pack_suback(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id, uint8_t elements,
+int mqtt_pack_suback(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id, u8_t elements,
 		     enum mqtt_qos granted_qos[])
 {
-	uint16_t rlen_size;
-	uint16_t offset;
-	uint16_t rlen;
-	uint8_t i;
+	u16_t rlen_size;
+	u16_t offset;
+	u16_t rlen;
+	u8_t i;
 	int rc;
 
 
@@ -276,7 +276,7 @@
 	rlen_encode(buf + PACKET_TYPE_SIZE, rlen);
 	offset = PACKET_TYPE_SIZE + rlen_size;
 
-	UNALIGNED_PUT(htons(pkt_id), (uint16_t *)(buf + offset));
+	UNALIGNED_PUT(htons(pkt_id), (u16_t *)(buf + offset));
 	offset += PACKET_ID_SIZE;
 
 	for (i = 0; i < elements; i++) {
@@ -286,13 +286,13 @@
 	return 0;
 }
 
-int mqtt_pack_connect(uint8_t *buf, uint16_t *length, uint16_t size,
+int mqtt_pack_connect(u8_t *buf, u16_t *length, u16_t size,
 		      struct mqtt_connect_msg *msg)
 {
-	uint16_t total_buf_size;
-	uint16_t rlen_size;
-	uint16_t pkt_size;
-	uint16_t offset;
+	u16_t total_buf_size;
+	u16_t rlen_size;
+	u16_t pkt_size;
+	u16_t offset;
 	int rc;
 
 	/* ----------- Payload size ----------- */
@@ -364,27 +364,27 @@
 			  (msg->will_flag ? 1 << 2 : 0) |
 			  (msg->clean_session ? 1 << 1 : 0);
 
-	UNALIGNED_PUT(htons(msg->keep_alive), (uint16_t *)(buf + offset + 8));
+	UNALIGNED_PUT(htons(msg->keep_alive), (u16_t *)(buf + offset + 8));
 	offset += 8 + INT_SIZE;
 	/* end of the CONNECT's Variable Header */
 
 	/* Payload */
 	UNALIGNED_PUT(htons(msg->client_id_len),
-		      (uint16_t *)(buf + offset));
+		      (u16_t *)(buf + offset));
 	offset += INT_SIZE;
 	memcpy(buf + offset, msg->client_id, msg->client_id_len);
 	offset += msg->client_id_len;
 
 	if (msg->will_flag) {
 		UNALIGNED_PUT(htons(msg->will_topic_len),
-			      (uint16_t *)(buf + offset));
+			      (u16_t *)(buf + offset));
 		offset += INT_SIZE;
 		memcpy(buf + offset, msg->will_topic,
 		       msg->will_topic_len);
 		offset += msg->will_topic_len;
 
 		UNALIGNED_PUT(htons(msg->will_msg_len),
-			      (uint16_t *)(buf + offset));
+			      (u16_t *)(buf + offset));
 		offset += INT_SIZE;
 		memcpy(buf + offset, msg->will_msg, msg->will_msg_len);
 		offset += msg->will_msg_len;
@@ -392,7 +392,7 @@
 
 	if (msg->user_name) {
 		UNALIGNED_PUT(htons(msg->user_name_len),
-			      (uint16_t *)(buf + offset));
+			      (u16_t *)(buf + offset));
 		offset += INT_SIZE;
 		memcpy(buf + offset, msg->user_name, msg->user_name_len);
 		offset += msg->user_name_len;
@@ -400,7 +400,7 @@
 
 	if (msg->password) {
 		UNALIGNED_PUT(htons(msg->password_len),
-			      (uint16_t *)(buf + offset));
+			      (u16_t *)(buf + offset));
 		offset += INT_SIZE;
 		memcpy(buf + offset, msg->password, msg->password_len);
 		offset += msg->password_len;
@@ -423,16 +423,16 @@
  * @retval -EINVAL
  */
 static
-int recover_value_len(uint8_t *buf, uint16_t length, uint8_t **val,
-		      uint16_t *val_len)
+int recover_value_len(u8_t *buf, u16_t length, u8_t **val,
+		      u16_t *val_len)
 {
-	uint16_t val_u16;
+	u16_t val_u16;
 
 	if (length < INT_SIZE) {
 		return -EINVAL;
 	}
 
-	val_u16 = UNALIGNED_GET((uint16_t *)buf);
+	val_u16 = UNALIGNED_GET((u16_t *)buf);
 	*val_len = ntohs(val_u16);
 
 	/* malformed packet: avoid buffer overflows */
@@ -444,15 +444,15 @@
 	return 0;
 }
 
-int mqtt_unpack_connect(uint8_t *buf, uint16_t length,
+int mqtt_unpack_connect(u8_t *buf, u16_t length,
 			struct mqtt_connect_msg *msg)
 {
-	uint8_t user_name_flag;
-	uint8_t password_flag;
-	uint16_t rlen_size;
-	uint16_t val_u16;
-	uint32_t rlen;
-	uint8_t offset;
+	u8_t user_name_flag;
+	u8_t password_flag;
+	u16_t rlen_size;
+	u16_t val_u16;
+	u32_t rlen;
+	u8_t offset;
 	int rc;
 
 	memset(msg, 0x00, sizeof(struct mqtt_connect_msg));
@@ -514,12 +514,12 @@
 
 	offset += FLAGS_SIZE;
 
-	val_u16 = UNALIGNED_GET((uint16_t *)(buf + offset));
+	val_u16 = UNALIGNED_GET((u16_t *)(buf + offset));
 	msg->keep_alive = ntohs(val_u16);
 	offset += KEEP_ALIVE_SIZE;
 
 	rc = recover_value_len(buf + offset, length - offset,
-			       (uint8_t **)&msg->client_id,
+			       (u8_t **)&msg->client_id,
 			       &msg->client_id_len);
 	if (rc != 0) {
 		return -EINVAL;
@@ -529,7 +529,7 @@
 
 	if (msg->will_flag) {
 		rc = recover_value_len(buf + offset, length - offset,
-				       (uint8_t **)&msg->will_topic,
+				       (u8_t **)&msg->will_topic,
 				       &msg->will_topic_len);
 		if (rc != 0) {
 			return -EINVAL;
@@ -549,7 +549,7 @@
 
 	if (user_name_flag) {
 		rc = recover_value_len(buf + offset, length - offset,
-				       (uint8_t **)&msg->user_name,
+				       (u8_t **)&msg->user_name,
 				       &msg->user_name_len);
 		if (rc != 0) {
 			return -EINVAL;
@@ -584,10 +584,10 @@
  * @retval -EINVAL on error
  */
 static
-int subscribe_size(uint16_t *rlen_size, uint16_t *payload_size, uint8_t items,
+int subscribe_size(u16_t *rlen_size, u16_t *payload_size, u8_t items,
 		   const char *topics[], enum mqtt_qos with_qos)
 {
-	uint8_t i;
+	u8_t i;
 	int rc;
 
 	*payload_size = PACKET_ID_SIZE;
@@ -623,16 +623,16 @@
  * @retval -EINVAL
  * @retval -ENOMEM
  */
-static int mqtt_pack_subscribe_unsubscribe(uint8_t *buf, uint16_t *length,
-					   uint16_t size, uint16_t pkt_id,
-					   uint8_t items, const char *topics[],
+static int mqtt_pack_subscribe_unsubscribe(u8_t *buf, u16_t *length,
+					   u16_t size, u16_t pkt_id,
+					   u8_t items, const char *topics[],
 					   const enum mqtt_qos qos[],
 					   enum mqtt_packet type)
 {
-	uint16_t rlen_size;
-	uint16_t payload;
-	uint16_t offset;
-	uint8_t i;
+	u16_t rlen_size;
+	u16_t payload;
+	u16_t offset;
+	u8_t i;
 	int rc;
 
 	if (items <= 0) {
@@ -666,13 +666,13 @@
 
 	offset = PACKET_TYPE_SIZE + rlen_size;
 
-	UNALIGNED_PUT(htons(pkt_id), (uint16_t *)(buf + offset));
+	UNALIGNED_PUT(htons(pkt_id), (u16_t *)(buf + offset));
 	offset += PACKET_ID_SIZE;
 
 	for (i = 0; i < items; i++) {
-		uint16_t topic_len = mqtt_strlen(topics[i]);
+		u16_t topic_len = mqtt_strlen(topics[i]);
 
-		UNALIGNED_PUT(htons(topic_len), (uint16_t *)(buf + offset));
+		UNALIGNED_PUT(htons(topic_len), (u16_t *)(buf + offset));
 		offset += INT_SIZE;
 
 		memcpy(buf + offset, topics[i], topic_len);
@@ -689,8 +689,8 @@
 	return 0;
 }
 
-int mqtt_pack_subscribe(uint8_t *buf, uint16_t *length, uint16_t size,
-			uint16_t pkt_id, uint8_t items, const char *topics[],
+int mqtt_pack_subscribe(u8_t *buf, u16_t *length, u16_t size,
+			u16_t pkt_id, u8_t items, const char *topics[],
 			const enum mqtt_qos qos[])
 {
 
@@ -699,23 +699,23 @@
 					       MQTT_SUBSCRIBE);
 }
 
-int mqtt_pack_unsubscribe(uint8_t *buf, uint16_t *length, uint16_t size,
-			  uint16_t pkt_id, uint8_t items, const char *topics[])
+int mqtt_pack_unsubscribe(u8_t *buf, u16_t *length, u16_t size,
+			  u16_t pkt_id, u8_t items, const char *topics[])
 {
 	return mqtt_pack_subscribe_unsubscribe(buf, length, size, pkt_id,
 					       items, topics, NULL,
 					       MQTT_UNSUBSCRIBE);
 }
 
-int mqtt_unpack_subscribe(uint8_t *buf, uint16_t length, uint16_t *pkt_id,
-			  uint8_t *items, uint8_t elements, char *topics[],
-			  uint16_t topic_len[], enum mqtt_qos qos[])
+int mqtt_unpack_subscribe(u8_t *buf, u16_t length, u16_t *pkt_id,
+			  u8_t *items, u8_t elements, char *topics[],
+			  u16_t topic_len[], enum mqtt_qos qos[])
 {
-	uint16_t rmlen_size;
-	uint16_t val_u16;
-	uint32_t rmlen;
-	uint16_t offset;
-	uint8_t i;
+	u16_t rmlen_size;
+	u16_t val_u16;
+	u32_t rmlen;
+	u16_t offset;
+	u8_t i;
 	int rc;
 
 	rc = rlen_decode(&rmlen, &rmlen_size, buf + PACKET_TYPE_SIZE,
@@ -742,7 +742,7 @@
 
 	offset = PACKET_TYPE_SIZE + rmlen_size;
 
-	val_u16 = UNALIGNED_GET((uint16_t *)(buf + offset));
+	val_u16 = UNALIGNED_GET((u16_t *)(buf + offset));
 	*pkt_id = ntohs(val_u16);
 	offset += PACKET_ID_SIZE;
 
@@ -752,7 +752,7 @@
 			return -EINVAL;
 		}
 
-		val_u16 = UNALIGNED_GET((uint16_t *)(buf + offset));
+		val_u16 = UNALIGNED_GET((u16_t *)(buf + offset));
 		topic_len[i] = ntohs(val_u16);
 		offset += INT_SIZE;
 		/* invalid topic length found: malformed message	*/
@@ -775,16 +775,16 @@
 	return 0;
 }
 
-int mqtt_unpack_suback(uint8_t *buf, uint16_t length, uint16_t *pkt_id,
-		       uint8_t *items, uint8_t elements,
+int mqtt_unpack_suback(u8_t *buf, u16_t length, u16_t *pkt_id,
+		       u8_t *items, u8_t elements,
 		       enum mqtt_qos granted_qos[])
 {
-	uint16_t rlen_size;
+	u16_t rlen_size;
 	enum mqtt_qos qos;
-	uint16_t val_u16;
-	uint32_t rlen;
-	uint16_t offset;
-	uint8_t i;
+	u16_t val_u16;
+	u32_t rlen;
+	u16_t offset;
+	u8_t i;
 	int rc;
 
 	*pkt_id = 0;
@@ -811,7 +811,7 @@
 
 	offset = PACKET_TYPE_SIZE + rlen_size;
 
-	val_u16 = UNALIGNED_GET((uint16_t *)(buf + offset));
+	val_u16 = UNALIGNED_GET((u16_t *)(buf + offset));
 	*pkt_id = ntohs(val_u16);
 	offset += PACKET_ID_SIZE;
 
@@ -835,12 +835,12 @@
 	return 0;
 }
 
-int mqtt_pack_publish(uint8_t *buf, uint16_t *length, uint16_t size,
+int mqtt_pack_publish(u8_t *buf, u16_t *length, u16_t size,
 		      struct mqtt_publish_msg *msg)
 {
-	uint16_t offset;
-	uint16_t rlen_size;
-	uint16_t payload;
+	u16_t offset;
+	u16_t rlen_size;
+	u16_t payload;
 	int rc;
 
 	if (msg->qos < MQTT_QoS0 || msg->qos > MQTT_QoS2) {
@@ -875,7 +875,7 @@
 	rlen_encode(buf + PACKET_TYPE_SIZE, payload);
 
 	offset = PACKET_TYPE_SIZE + rlen_size;
-	UNALIGNED_PUT(htons(msg->topic_len), (uint16_t *)(buf + offset));
+	UNALIGNED_PUT(htons(msg->topic_len), (u16_t *)(buf + offset));
 	offset += INT_SIZE;
 
 	memcpy(buf + offset, msg->topic, msg->topic_len);
@@ -883,7 +883,7 @@
 
 	/* packet id is only present for QoS 1 and 2			*/
 	if (msg->qos > MQTT_QoS0) {
-		UNALIGNED_PUT(htons(msg->pkt_id), (uint16_t *)(buf + offset));
+		UNALIGNED_PUT(htons(msg->pkt_id), (u16_t *)(buf + offset));
 		offset += PACKET_ID_SIZE;
 	}
 
@@ -895,13 +895,13 @@
 	return 0;
 }
 
-int mqtt_unpack_publish(uint8_t *buf, uint16_t length,
+int mqtt_unpack_publish(u8_t *buf, u16_t length,
 			struct mqtt_publish_msg *msg)
 {
-	uint16_t rmlen_size;
-	uint16_t val_u16;
-	uint16_t offset;
-	uint32_t rmlen;
+	u16_t rmlen_size;
+	u16_t val_u16;
+	u16_t offset;
+	u32_t rmlen;
 	int rc;
 
 	if (buf[0] >> 4 != MQTT_PUBLISH) {
@@ -923,7 +923,7 @@
 	}
 
 	offset = PACKET_TYPE_SIZE + rmlen_size;
-	val_u16 = UNALIGNED_GET((uint16_t *)(buf + offset));
+	val_u16 = UNALIGNED_GET((u16_t *)(buf + offset));
 	msg->topic_len = ntohs(val_u16);
 
 	offset += INT_SIZE;
@@ -934,7 +934,7 @@
 	msg->topic = (char *)(buf + offset);
 	offset += msg->topic_len;
 
-	val_u16 = UNALIGNED_GET((uint16_t *)(buf + offset));
+	val_u16 = UNALIGNED_GET((u16_t *)(buf + offset));
 	if (msg->qos == MQTT_QoS1 || msg->qos == MQTT_QoS2) {
 		msg->pkt_id = ntohs(val_u16);
 		offset += PACKET_ID_SIZE;
@@ -948,8 +948,8 @@
 	return 0;
 }
 
-int mqtt_unpack_connack(uint8_t *buf, uint16_t length, uint8_t *session,
-			uint8_t *connect_rc)
+int mqtt_unpack_connack(u8_t *buf, u16_t length, u8_t *session,
+			u8_t *connect_rc)
 {
 	if (length < CONNACK_SIZE) {
 		return -EINVAL;
@@ -986,8 +986,8 @@
  * @retval -ENOMEM
  */
 static
-int pack_zerolen(uint8_t *buf, uint16_t *length, uint16_t size,
-		 enum mqtt_packet pkt_type, uint8_t reserved)
+int pack_zerolen(u8_t *buf, u16_t *length, u16_t size,
+		 enum mqtt_packet pkt_type, u8_t reserved)
 {
 	if (size < MSG_ZEROLEN_SIZE) {
 		return -ENOMEM;
@@ -1000,17 +1000,17 @@
 	return 0;
 }
 
-int mqtt_pack_pingreq(uint8_t *buf, uint16_t *length, uint16_t size)
+int mqtt_pack_pingreq(u8_t *buf, u16_t *length, u16_t size)
 {
 	return pack_zerolen(buf, length, size, MQTT_PINGREQ, 0x00);
 }
 
-int mqtt_pack_pingresp(uint8_t *buf, uint16_t *length, uint16_t size)
+int mqtt_pack_pingresp(u8_t *buf, u16_t *length, u16_t size)
 {
 	return pack_zerolen(buf, length, size, MQTT_PINGRESP, 0x00);
 }
 
-int mqtt_pack_disconnect(uint8_t *buf, uint16_t *length, uint16_t size)
+int mqtt_pack_disconnect(u8_t *buf, u16_t *length, u16_t size)
 {
 	return pack_zerolen(buf, length, size, MQTT_DISCONNECT, 0x00);
 }
@@ -1028,8 +1028,8 @@
  * @retval -EINVAL
  */
 static
-int unpack_pktid(uint8_t *buf, uint16_t length, enum mqtt_packet *type,
-		 uint8_t *reserved, uint16_t *pkt_id)
+int unpack_pktid(u8_t *buf, u16_t length, enum mqtt_packet *type,
+		 u8_t *reserved, u16_t *pkt_id)
 {
 	if (length < MSG_PKTID_ONLY_SIZE) {
 		return -EINVAL;
@@ -1041,7 +1041,7 @@
 
 	*type = buf[0] >> 4;
 	*reserved = buf[0] & 0x0F;
-	*pkt_id = ntohs(*(uint16_t *)(buf + 2));
+	*pkt_id = ntohs(*(u16_t *)(buf + 2));
 
 	return 0;
 }
@@ -1065,11 +1065,11 @@
  * @retval -EINVAL
  */
 static
-int unpack_pktid_validate(uint8_t *buf, uint16_t length, uint16_t *pkt_id,
-			  uint8_t expected_type, uint8_t expected_reserv)
+int unpack_pktid_validate(u8_t *buf, u16_t length, u16_t *pkt_id,
+			  u8_t expected_type, u8_t expected_reserv)
 {
 	enum mqtt_packet type;
-	uint8_t reserved;
+	u8_t reserved;
 	int rc;
 
 	rc = unpack_pktid(buf, length, &type, &reserved, pkt_id);
@@ -1084,31 +1084,31 @@
 	return 0;
 }
 
-int mqtt_unpack_puback(uint8_t *buf, uint16_t length, uint16_t *pkt_id)
+int mqtt_unpack_puback(u8_t *buf, u16_t length, u16_t *pkt_id)
 {
 	return unpack_pktid_validate(buf, length, pkt_id, MQTT_PUBACK,
 				     PUBACK_RESERVED);
 }
 
-int mqtt_unpack_pubrec(uint8_t *buf, uint16_t length, uint16_t *pkt_id)
+int mqtt_unpack_pubrec(u8_t *buf, u16_t length, u16_t *pkt_id)
 {
 	return unpack_pktid_validate(buf, length, pkt_id, MQTT_PUBREC,
 				     PUBREC_RESERVED);
 }
 
-int mqtt_unpack_pubrel(uint8_t *buf, uint16_t length, uint16_t *pkt_id)
+int mqtt_unpack_pubrel(u8_t *buf, u16_t length, u16_t *pkt_id)
 {
 	return unpack_pktid_validate(buf, length, pkt_id, MQTT_PUBREL,
 				     PUBREL_RESERVED);
 }
 
-int mqtt_unpack_pubcomp(uint8_t *buf, uint16_t length, uint16_t *pkt_id)
+int mqtt_unpack_pubcomp(u8_t *buf, u16_t length, u16_t *pkt_id)
 {
 	return unpack_pktid_validate(buf, length, pkt_id, MQTT_PUBCOMP,
 				     PUBCOMP_RESERVED);
 }
 
-int mqtt_unpack_unsuback(uint8_t *buf, uint16_t length, uint16_t *pkt_id)
+int mqtt_unpack_unsuback(u8_t *buf, u16_t length, u16_t *pkt_id)
 {
 	return unpack_pktid_validate(buf, length, pkt_id, MQTT_UNSUBACK,
 				     UNSUBACK_RESERVED);
@@ -1126,8 +1126,8 @@
  * @retval -EINVAL
  */
 static
-int unpack_zerolen(uint8_t *buf, uint16_t length, enum mqtt_packet *pkt_type,
-		   uint8_t *reserved)
+int unpack_zerolen(u8_t *buf, u16_t length, enum mqtt_packet *pkt_type,
+		   u8_t *reserved)
 {
 	if (length < MSG_ZEROLEN_SIZE) {
 		return -EINVAL;
@@ -1155,12 +1155,12 @@
  * @retval -EINVAL
  */
 static
-int unpack_zerolen_validate(uint8_t *buf, uint16_t length,
+int unpack_zerolen_validate(u8_t *buf, u16_t length,
 			    enum mqtt_packet expected_type,
-			    uint8_t expected_reserved)
+			    u8_t expected_reserved)
 {
 	enum mqtt_packet pkt_type;
-	uint8_t reserved;
+	u8_t reserved;
 	int rc;
 
 	rc = unpack_zerolen(buf, length, &pkt_type, &reserved);
@@ -1175,17 +1175,17 @@
 	return 0;
 }
 
-int mqtt_unpack_pingreq(uint8_t *buf, uint16_t length)
+int mqtt_unpack_pingreq(u8_t *buf, u16_t length)
 {
 	return unpack_zerolen_validate(buf, length, MQTT_PINGREQ, 0x00);
 }
 
-int mqtt_unpack_pingresp(uint8_t *buf, uint16_t length)
+int mqtt_unpack_pingresp(u8_t *buf, u16_t length)
 {
 	return unpack_zerolen_validate(buf, length, MQTT_PINGRESP, 0x00);
 }
 
-int mqtt_unpack_disconnect(uint8_t *buf, uint16_t length)
+int mqtt_unpack_disconnect(u8_t *buf, u16_t length)
 {
 	return unpack_zerolen_validate(buf, length, MQTT_DISCONNECT, 0x00);
 }
diff --git a/subsys/net/lib/mqtt/mqtt_pkt.h b/subsys/net/lib/mqtt/mqtt_pkt.h
index 0987c2c..25305bf 100644
--- a/subsys/net/lib/mqtt/mqtt_pkt.h
+++ b/subsys/net/lib/mqtt/mqtt_pkt.h
@@ -37,8 +37,8 @@
  * @retval 0 on success
  * @retval -ENOMEM if size < 4
  */
-int mqtt_pack_connack(uint8_t *buf, uint16_t *length, uint16_t size,
-		      uint8_t session_present, uint8_t ret_code);
+int mqtt_pack_connack(u8_t *buf, u16_t *length, u16_t size,
+		      u8_t session_present, u8_t ret_code);
 
 /**
  * Packs the MQTT PUBACK message
@@ -51,8 +51,8 @@
  * @retval 0 on success
  * @retval -ENOMEM if size < 4
  */
-int mqtt_pack_puback(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id);
+int mqtt_pack_puback(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id);
 
 /**
  * Packs the MQTT PUBREC message
@@ -65,8 +65,8 @@
  * @retval 0 on success
  * @retval -ENOMEM if size < 4
  */
-int mqtt_pack_pubrec(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id);
+int mqtt_pack_pubrec(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id);
 
 /**
  * Packs the MQTT PUBREL message
@@ -79,8 +79,8 @@
  * @retval 0 on success
  * @retval -ENOMEM if size < 4
  */
-int mqtt_pack_pubrel(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id);
+int mqtt_pack_pubrel(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id);
 
 /**
  * Packs the MQTT PUBCOMP message
@@ -93,8 +93,8 @@
  * @retval 0 on success
  * @retval -ENOMEM if size < 4
  */
-int mqtt_pack_pubcomp(uint8_t *buf, uint16_t *length, uint16_t size,
-		      uint16_t pkt_id);
+int mqtt_pack_pubcomp(u8_t *buf, u16_t *length, u16_t size,
+		      u16_t pkt_id);
 
 /**
  * Packs the MQTT SUBACK message
@@ -110,8 +110,8 @@
  * @retval -EINVAL
  * @retval -ENOMEM
  */
-int mqtt_pack_suback(uint8_t *buf, uint16_t *length, uint16_t size,
-		     uint16_t pkt_id, uint8_t elements,
+int mqtt_pack_suback(u8_t *buf, u16_t *length, u16_t size,
+		     u16_t pkt_id, u8_t elements,
 		     enum mqtt_qos granted_qos[]);
 
 /**
@@ -126,7 +126,7 @@
  * @retval -EINVAL
  * @retval -ENOMEM
  */
-int mqtt_pack_connect(uint8_t *buf, uint16_t *length, uint16_t size,
+int mqtt_pack_connect(u8_t *buf, u16_t *length, u16_t size,
 		      struct mqtt_connect_msg *msg);
 
 /**
@@ -139,7 +139,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_connect(uint8_t *buf, uint16_t length,
+int mqtt_unpack_connect(u8_t *buf, u16_t length,
 			struct mqtt_connect_msg *msg);
 
 /**
@@ -161,8 +161,8 @@
  * @retval -EINVAL
  * @retval -ENOMEM
  */
-int mqtt_pack_subscribe(uint8_t *buf, uint16_t *length, uint16_t size,
-			uint16_t pkt_id, uint8_t items, const char *topics[],
+int mqtt_pack_subscribe(u8_t *buf, u16_t *length, u16_t size,
+			u16_t pkt_id, u8_t items, const char *topics[],
 			const enum mqtt_qos qos[]);
 
 /**
@@ -180,8 +180,8 @@
  * @retval -EINVAL
  * @retval -ENOMEM
  */
-int mqtt_pack_unsubscribe(uint8_t *buf, uint16_t *length, uint16_t size,
-			  uint16_t pkt_id, uint8_t items, const char *topics[]);
+int mqtt_pack_unsubscribe(u8_t *buf, u16_t *length, u16_t size,
+			  u16_t pkt_id, u8_t items, const char *topics[]);
 
 /**
  * Unpacks the MQTT SUBSCRIBE message
@@ -199,9 +199,9 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_subscribe(uint8_t *buf, uint16_t length, uint16_t *pkt_id,
-			  uint8_t *items, uint8_t elements, char *topics[],
-			  uint16_t topic_len[], enum mqtt_qos qos[]);
+int mqtt_unpack_subscribe(u8_t *buf, u16_t length, u16_t *pkt_id,
+			  u8_t *items, u8_t elements, char *topics[],
+			  u16_t topic_len[], enum mqtt_qos qos[]);
 
 /**
  * Unpacks the MQTT SUBACK message
@@ -216,8 +216,8 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_suback(uint8_t *buf, uint16_t length, uint16_t *pkt_id,
-		       uint8_t *items, uint8_t elements,
+int mqtt_unpack_suback(u8_t *buf, u16_t length, u16_t *pkt_id,
+		       u8_t *items, u8_t elements,
 		       enum mqtt_qos granted_qos[]);
 
 /**
@@ -232,7 +232,7 @@
  * @retval -EINVAL
  * @retval -ENOMEM
  */
-int mqtt_pack_publish(uint8_t *buf, uint16_t *length, uint16_t size,
+int mqtt_pack_publish(u8_t *buf, u16_t *length, u16_t size,
 		      struct mqtt_publish_msg *msg);
 
 /**
@@ -245,7 +245,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_publish(uint8_t *buf, uint16_t length,
+int mqtt_unpack_publish(u8_t *buf, u16_t length,
 			struct mqtt_publish_msg *msg);
 
 /**
@@ -259,8 +259,8 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_connack(uint8_t *buf, uint16_t length, uint8_t *session,
-			uint8_t *connect_rc);
+int mqtt_unpack_connack(u8_t *buf, u16_t length, u8_t *session,
+			u8_t *connect_rc);
 
 /**
  * Packs the MQTT PINGREQ message
@@ -272,7 +272,7 @@
  * @retval 0 on success
  * @retval -ENOMEM
  */
-int mqtt_pack_pingreq(uint8_t *buf, uint16_t *length, uint16_t size);
+int mqtt_pack_pingreq(u8_t *buf, u16_t *length, u16_t size);
 
 /**
  * Packs the MQTT PINGRESP message
@@ -284,7 +284,7 @@
  * @retval 0 on success
  * @retval -ENOMEM
  */
-int mqtt_pack_pingresp(uint8_t *buf, uint16_t *length, uint16_t size);
+int mqtt_pack_pingresp(u8_t *buf, u16_t *length, u16_t size);
 
 /**
  * Packs the MQTT DISCONNECT message
@@ -296,7 +296,7 @@
  * @retval 0 on success
  * @retval -ENOMEM
  */
-int mqtt_pack_disconnect(uint8_t *buf, uint16_t *length, uint16_t size);
+int mqtt_pack_disconnect(u8_t *buf, u16_t *length, u16_t size);
 
 /**
  * Packs the MQTT UNSUBACK message
@@ -309,8 +309,8 @@
  * @retval 0 on success
  * @retval -ENOMEM if size < 4
  */
-int mqtt_pack_unsuback(uint8_t *buf, uint16_t *length, uint16_t size,
-		       uint16_t pkt_id);
+int mqtt_pack_unsuback(u8_t *buf, u16_t *length, u16_t size,
+		       u16_t pkt_id);
 
 /**
  * Unpacks the MQTT PUBACK message
@@ -322,7 +322,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_puback(uint8_t *buf, uint16_t length, uint16_t *pkt_id);
+int mqtt_unpack_puback(u8_t *buf, u16_t length, u16_t *pkt_id);
 
 /**
  * Unpacks the MQTT PUBREC message
@@ -334,7 +334,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_pubrec(uint8_t *buf, uint16_t length, uint16_t *pkt_id);
+int mqtt_unpack_pubrec(u8_t *buf, u16_t length, u16_t *pkt_id);
 
 /**
  * Unpacks the MQTT PUBREL message
@@ -346,7 +346,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_pubrel(uint8_t *buf, uint16_t length, uint16_t *pkt_id);
+int mqtt_unpack_pubrel(u8_t *buf, u16_t length, u16_t *pkt_id);
 
 /**
  * Unpacks the MQTT PUBCOMP message
@@ -358,7 +358,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_pubcomp(uint8_t *buf, uint16_t length, uint16_t *pkt_id);
+int mqtt_unpack_pubcomp(u8_t *buf, u16_t length, u16_t *pkt_id);
 
 /**
  * Unpacks the MQTT UNSUBACK message
@@ -370,7 +370,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_unsuback(uint8_t *buf, uint16_t length, uint16_t *pkt_id);
+int mqtt_unpack_unsuback(u8_t *buf, u16_t length, u16_t *pkt_id);
 
 /**
  * Unpacks the MQTT PINGREQ message
@@ -381,7 +381,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_pingreq(uint8_t *buf, uint16_t length);
+int mqtt_unpack_pingreq(u8_t *buf, u16_t length);
 
 /**
  * Unpacks the MQTT PINGRESP message
@@ -392,7 +392,7 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_pingresp(uint8_t *buf, uint16_t length);
+int mqtt_unpack_pingresp(u8_t *buf, u16_t length);
 
 /**
  * Unpacks the MQTT DISCONNECT message
@@ -403,6 +403,6 @@
  * @retval 0 on success
  * @retval -EINVAL
  */
-int mqtt_unpack_disconnect(uint8_t *buf, uint16_t length);
+int mqtt_unpack_disconnect(u8_t *buf, u16_t length);
 
 #endif
diff --git a/subsys/net/lib/zoap/zoap.c b/subsys/net/lib/zoap/zoap.c
index f0282a1..22a4de0 100644
--- a/subsys/net/lib/zoap/zoap.c
+++ b/subsys/net/lib/zoap/zoap.c
@@ -19,7 +19,7 @@
 #include <net/zoap.h>
 
 struct option_context {
-	uint8_t *buf;
+	u8_t *buf;
 	int delta;
 	int used; /* size used of options */
 	int buflen;
@@ -31,28 +31,28 @@
 
 #define BASIC_HEADER_SIZE 4
 
-static uint8_t coap_option_header_get_delta(uint8_t buf)
+static u8_t coap_option_header_get_delta(u8_t buf)
 {
 	return (buf & 0xF0) >> 4;
 }
 
-static uint8_t coap_option_header_get_len(uint8_t buf)
+static u8_t coap_option_header_get_len(u8_t buf)
 {
 	return buf & 0x0F;
 }
 
-static void coap_option_header_set_delta(uint8_t *buf, uint8_t delta)
+static void coap_option_header_set_delta(u8_t *buf, u8_t delta)
 {
 	*buf = (delta & 0xF) << 4;
 }
 
-static void coap_option_header_set_len(uint8_t *buf, uint8_t len)
+static void coap_option_header_set_len(u8_t *buf, u8_t len)
 {
 	*buf |= (len & 0xF);
 }
 
-static int decode_delta(int num, const uint8_t *buf, int16_t buflen,
-			uint16_t *decoded)
+static int decode_delta(int num, const u8_t *buf, s16_t buflen,
+			u16_t *decoded)
 {
 	int hdrlen = 0;
 
@@ -84,9 +84,9 @@
 
 static int coap_parse_option(const struct zoap_packet *zpkt,
 			     struct option_context *context,
-			     uint8_t **value, uint16_t *vlen)
+			     u8_t **value, u16_t *vlen)
 {
-	uint16_t delta, len;
+	u16_t delta, len;
 	int r;
 
 	if (context->buflen < 1) {
@@ -163,7 +163,7 @@
 	return context.used;
 }
 
-static uint8_t coap_header_get_tkl(const struct zoap_packet *zpkt)
+static u8_t coap_header_get_tkl(const struct zoap_packet *zpkt)
 {
 	return zpkt->pkt->frags->data[0] & 0xF;
 }
@@ -171,7 +171,7 @@
 static int coap_get_header_len(const struct zoap_packet *zpkt)
 {
 	unsigned int hdrlen;
-	uint8_t tkl;
+	u8_t tkl;
 
 	hdrlen = BASIC_HEADER_SIZE;
 
@@ -229,9 +229,9 @@
 	return 0;
 }
 
-static int delta_encode(int num, uint8_t *value, uint8_t *buf, size_t buflen)
+static int delta_encode(int num, u8_t *value, u8_t *buf, size_t buflen)
 {
-	uint16_t v;
+	u16_t v;
 
 	if (num < 13) {
 		*value = num;
@@ -260,11 +260,11 @@
 	return 2;
 }
 
-static int coap_option_encode(struct option_context *context, uint16_t code,
-			      const void *value, uint16_t len)
+static int coap_option_encode(struct option_context *context, u16_t code,
+			      const void *value, u16_t len)
 {
 	int delta, offset, r;
-	uint8_t data;
+	u8_t data;
 
 	delta = code - context->delta;
 
@@ -406,7 +406,7 @@
 	struct zoap_pending *pendings, size_t len)
 {
 	struct zoap_pending *p;
-	uint16_t resp_id = zoap_header_get_id(response);
+	u16_t resp_id = zoap_header_get_id(response);
 	size_t i;
 
 	for (i = 0, p = pendings; i < len; i++, p++) {
@@ -442,7 +442,7 @@
 
 #define LAST_TIMEOUT (2345 * 4)
 
-static int32_t next_timeout(int32_t previous)
+static s32_t next_timeout(s32_t previous)
 {
 	switch (previous) {
 	case 0:
@@ -460,7 +460,7 @@
 
 bool zoap_pending_cycle(struct zoap_pending *pending)
 {
-	int32_t old = pending->timeout;
+	s32_t old = pending->timeout;
 	bool cont;
 
 	pending->timeout = next_timeout(pending->timeout);
@@ -489,7 +489,7 @@
 			const char * const *path)
 {
 	struct zoap_option options[16];
-	uint16_t count = 16;
+	u16_t count = 16;
 	int i, r;
 
 	r = zoap_find_options(zpkt, ZOAP_OPTION_URI_PATH, options, count);
@@ -517,7 +517,7 @@
 }
 
 static zoap_method_t method_from_code(const struct zoap_resource *resource,
-				      uint8_t code)
+				      u8_t code)
 {
 	switch (code) {
 	case ZOAP_METHOD_GET:
@@ -535,7 +535,7 @@
 
 static bool is_request(const struct zoap_packet *zpkt)
 {
-	uint8_t code = zoap_header_get_code(zpkt);
+	u8_t code = zoap_header_get_code(zpkt);
 
 	return !(code & ~ZOAP_REQUEST_MASK);
 }
@@ -552,7 +552,7 @@
 
 	for (resource = resources; resource && resource->path; resource++) {
 		zoap_method_t method;
-		uint8_t code;
+		u8_t code;
 
 		/* FIXME: deal with hierarchical resources */
 		if (!uri_path_eq(zpkt, resource->path)) {
@@ -597,7 +597,7 @@
 static int get_observe_option(const struct zoap_packet *zpkt)
 {
 	struct zoap_option option = {};
-	uint16_t count = 1;
+	u16_t count = 1;
 	int r;
 
 	r = zoap_find_options(zpkt, ZOAP_OPTION_OBSERVE, &option, count);
@@ -614,8 +614,8 @@
 	struct zoap_reply *replies, size_t len)
 {
 	struct zoap_reply *r;
-	const uint8_t *token;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t tkl;
 	size_t i;
 
 	token = zoap_header_get_token(response, &tkl);
@@ -654,8 +654,8 @@
 void zoap_reply_init(struct zoap_reply *reply,
 		     const struct zoap_packet *request)
 {
-	const uint8_t *token;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t tkl;
 	int age;
 
 	token = zoap_header_get_token(request, &tkl);
@@ -704,8 +704,8 @@
 			const struct zoap_packet *request,
 			const struct sockaddr *addr)
 {
-	const uint8_t *token;
-	uint8_t tkl;
+	const u8_t *token;
+	u8_t tkl;
 
 	token = zoap_header_get_token(request, &tkl);
 
@@ -797,10 +797,10 @@
 	return NULL;
 }
 
-uint8_t *zoap_packet_get_payload(struct zoap_packet *zpkt, uint16_t *len)
+u8_t *zoap_packet_get_payload(struct zoap_packet *zpkt, u16_t *len)
 {
-	uint8_t *appdata = zpkt->pkt->frags->data;
-	uint16_t appdatalen = zpkt->pkt->frags->len;
+	u8_t *appdata = zpkt->pkt->frags->data;
+	u16_t appdatalen = zpkt->pkt->frags->len;
 
 	if (!zpkt || !len) {
 		return NULL;
@@ -822,7 +822,7 @@
 	return zpkt->start;
 }
 
-int zoap_packet_set_used(struct zoap_packet *zpkt, uint16_t len)
+int zoap_packet_set_used(struct zoap_packet *zpkt, u16_t len)
 {
 	if ((zpkt->pkt->frags->len + len) >
 	    net_buf_tailroom(zpkt->pkt->frags)) {
@@ -834,8 +834,8 @@
 	return 0;
 }
 
-int zoap_add_option(struct zoap_packet *zpkt, uint16_t code,
-		    const void *value, uint16_t len)
+int zoap_add_option(struct zoap_packet *zpkt, u16_t code,
+		    const void *value, u16_t len)
 {
 	struct net_buf *frag = zpkt->pkt->frags;
 	struct option_context context = { .delta = 0,
@@ -883,16 +883,16 @@
 	return 0;
 }
 
-int zoap_add_option_int(struct zoap_packet *zpkt, uint16_t code,
+int zoap_add_option_int(struct zoap_packet *zpkt, u16_t code,
 			unsigned int val)
 {
-	uint8_t data[4], len;
+	u8_t data[4], len;
 
 	if (val == 0) {
 		data[0] = 0;
 		len = 0;
 	} else if (val < 0xFF) {
-		data[0] = (uint8_t) val;
+		data[0] = (u8_t) val;
 		len = 1;
 	} else if (val < 0xFFFF) {
 		sys_put_be16(val, data);
@@ -909,14 +909,14 @@
 	return zoap_add_option(zpkt, code, data, len);
 }
 
-int zoap_find_options(const struct zoap_packet *zpkt, uint16_t code,
-		      struct zoap_option *options, uint16_t veclen)
+int zoap_find_options(const struct zoap_packet *zpkt, u16_t code,
+		      struct zoap_option *options, u16_t veclen)
 {
 	struct net_buf *frag = zpkt->pkt->frags;
 	struct option_context context = { .delta = 0,
 					  .used = 0 };
 	int hdrlen, count = 0;
-	uint16_t len;
+	u16_t len;
 
 	hdrlen = coap_get_header_len(zpkt);
 	if (hdrlen < 0) {
@@ -924,11 +924,11 @@
 	}
 
 	context.buflen = frag->len - hdrlen;
-	context.buf = (uint8_t *)frag->data + hdrlen;
+	context.buf = (u8_t *)frag->data + hdrlen;
 
 	while (context.delta <= code && count < veclen) {
 		int used = coap_parse_option(zpkt, &context,
-					     (uint8_t **)&options[count].value,
+					     (u8_t **)&options[count].value,
 					     &len);
 		options[count].len = len;
 		if (used < 0) {
@@ -949,26 +949,26 @@
 	return count;
 }
 
-uint8_t zoap_header_get_version(const struct zoap_packet *zpkt)
+u8_t zoap_header_get_version(const struct zoap_packet *zpkt)
 {
 	return (zpkt->pkt->frags->data[0] & 0xC0) >> 6;
 }
 
-uint8_t zoap_header_get_type(const struct zoap_packet *zpkt)
+u8_t zoap_header_get_type(const struct zoap_packet *zpkt)
 {
 	return (zpkt->pkt->frags->data[0] & 0x30) >> 4;
 }
 
-uint8_t coap_header_get_code(const struct zoap_packet *zpkt)
+u8_t coap_header_get_code(const struct zoap_packet *zpkt)
 {
 	return zpkt->pkt->frags->data[1];
 }
 
-const uint8_t *zoap_header_get_token(const struct zoap_packet *zpkt,
-				     uint8_t *len)
+const u8_t *zoap_header_get_token(const struct zoap_packet *zpkt,
+				     u8_t *len)
 {
 	struct net_buf *frag = zpkt->pkt->frags;
-	uint8_t tkl = coap_header_get_tkl(zpkt);
+	u8_t tkl = coap_header_get_tkl(zpkt);
 
 	if (len) {
 		*len = 0;
@@ -982,12 +982,12 @@
 		*len = tkl;
 	}
 
-	return (uint8_t *)frag->data + BASIC_HEADER_SIZE;
+	return (u8_t *)frag->data + BASIC_HEADER_SIZE;
 }
 
-uint8_t zoap_header_get_code(const struct zoap_packet *zpkt)
+u8_t zoap_header_get_code(const struct zoap_packet *zpkt)
 {
-	uint8_t code = coap_header_get_code(zpkt);
+	u8_t code = coap_header_get_code(zpkt);
 
 	switch (code) {
 	/* Methods are encoded in the code field too */
@@ -1025,26 +1025,26 @@
 	}
 }
 
-uint16_t zoap_header_get_id(const struct zoap_packet *zpkt)
+u16_t zoap_header_get_id(const struct zoap_packet *zpkt)
 {
 	return sys_get_be16(&zpkt->pkt->frags->data[2]);
 }
 
-void zoap_header_set_version(struct zoap_packet *zpkt, uint8_t ver)
+void zoap_header_set_version(struct zoap_packet *zpkt, u8_t ver)
 {
 	zpkt->pkt->frags->data[0] |= (ver & 0x3) << 6;
 }
 
-void zoap_header_set_type(struct zoap_packet *zpkt, uint8_t type)
+void zoap_header_set_type(struct zoap_packet *zpkt, u8_t type)
 {
 	zpkt->pkt->frags->data[0] |= (type & 0x3) << 4;
 }
 
-int zoap_header_set_token(struct zoap_packet *zpkt, const uint8_t *token,
-			  uint8_t tokenlen)
+int zoap_header_set_token(struct zoap_packet *zpkt, const u8_t *token,
+			  u8_t tokenlen)
 {
 	struct net_buf *frag = zpkt->pkt->frags;
-	uint8_t *appdata = frag->data;
+	u8_t *appdata = frag->data;
 
 	if (net_buf_tailroom(frag) < BASIC_HEADER_SIZE + tokenlen) {
 		return -EINVAL;
@@ -1063,12 +1063,12 @@
 	return 0;
 }
 
-void zoap_header_set_code(struct zoap_packet *zpkt, uint8_t code)
+void zoap_header_set_code(struct zoap_packet *zpkt, u8_t code)
 {
 	zpkt->pkt->frags->data[1] = code;
 }
 
-void zoap_header_set_id(struct zoap_packet *zpkt, uint16_t id)
+void zoap_header_set_id(struct zoap_packet *zpkt, u16_t id)
 {
 	sys_put_be16(id, &zpkt->pkt->frags->data[2]);
 }
@@ -1095,7 +1095,7 @@
 int zoap_add_block1_option(struct zoap_packet *zpkt,
 			    struct zoap_block_context *ctx)
 {
-	uint16_t bytes = zoap_block_size_to_bytes(ctx->block_size);
+	u16_t bytes = zoap_block_size_to_bytes(ctx->block_size);
 	unsigned int val = 0;
 	int r;
 
@@ -1117,7 +1117,7 @@
 			    struct zoap_block_context *ctx)
 {
 	int r, val = 0;
-	uint16_t bytes = zoap_block_size_to_bytes(ctx->block_size);
+	u16_t bytes = zoap_block_size_to_bytes(ctx->block_size);
 
 	if (is_request(zpkt)) {
 		SET_BLOCK_SIZE(val, ctx->block_size);
@@ -1151,7 +1151,7 @@
 	bool more;
 };
 
-static int get_block_option(const struct zoap_packet *zpkt, uint16_t code)
+static int get_block_option(const struct zoap_packet *zpkt, u16_t code)
 {
 	struct zoap_option option;
 	unsigned int val;
@@ -1284,12 +1284,12 @@
 	return ctx->current;
 }
 
-uint8_t *zoap_next_token(void)
+u8_t *zoap_next_token(void)
 {
-	static uint32_t rand[2];
+	static u32_t rand[2];
 
 	rand[0] = sys_rand32_get();
 	rand[1] = sys_rand32_get();
 
-	return (uint8_t *) rand;
+	return (u8_t *) rand;
 }
diff --git a/subsys/net/lib/zoap/zoap_link_format.c b/subsys/net/lib/zoap/zoap_link_format.c
index daa2e84..544a999 100644
--- a/subsys/net/lib/zoap/zoap_link_format.c
+++ b/subsys/net/lib/zoap/zoap_link_format.c
@@ -34,7 +34,7 @@
 	strncpy(str, prefix, sizeof(prefix) - 1);
 
 	for (p = path; p && *p; ) {
-		uint16_t path_len = strlen(*p);
+		u16_t path_len = strlen(*p);
 
 		str = net_buf_add(buf, path_len);
 		strncpy(str, *p, path_len);
@@ -109,7 +109,7 @@
 }
 
 static bool match_path_uri(const char * const *path,
-			   const char *uri, uint16_t len)
+			   const char *uri, u16_t len)
 {
 	const char * const *p = NULL;
 	int i, j, plen;
@@ -171,7 +171,7 @@
 	 * resources with resource type lux or temperature.
 	 */
 	for (attr = attributes; attr && *attr; attr++) {
-		uint16_t attr_len = strlen(*attr);
+		u16_t attr_len = strlen(*attr);
 
 		if (query->len != attr_len) {
 			continue;
@@ -209,7 +209,7 @@
 	    !strncmp((char *) query->value, "href", href_len)) {
 		/* The stuff after 'href=' */
 		const char *uri = (char *) query->value + href_len + 1;
-		uint16_t uri_len  = query->len - (href_len + 1);
+		u16_t uri_len  = query->len - (href_len + 1);
 
 		return match_path_uri(resource->path, uri, uri_len);
 	}
@@ -225,7 +225,7 @@
 	struct zoap_packet response;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint16_t id;
+	u16_t id;
 	int r;
 
 	id = zoap_header_get_id(request);
@@ -275,10 +275,10 @@
 	struct zoap_option query;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	const uint8_t *token;
+	const u8_t *token;
 	unsigned int num_queries;
-	uint16_t id;
-	uint8_t tkl, format = 40; /* application/link-format */
+	u16_t id;
+	u8_t tkl, format = 40; /* application/link-format */
 	int r;
 
 	id = zoap_header_get_id(request);
@@ -337,7 +337,7 @@
 	 */
 	while (resource++ && resource->path) {
 		struct net_buf *temp;
-		uint8_t *str;
+		u8_t *str;
 
 		if (!match_queries_resource(resource, &query, num_queries)) {
 			continue;
diff --git a/tests/net/6lo/src/main.c b/tests/net/6lo/src/main.c
index 5edadbd..529d4a3 100644
--- a/tests/net/6lo/src/main.c
+++ b/tests/net/6lo/src/main.c
@@ -91,8 +91,8 @@
 		{ { { 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
 		      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xbb, 0xaa } } }
 
-uint8_t src_mac[8] = { 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xbb };
-uint8_t dst_mac[8] = { 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xbb, 0xaa };
+u8_t src_mac[8] = { 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xbb };
+u8_t dst_mac[8] = { 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xbb, 0xaa };
 
 /* Source and Destination addresses are contect related addresses. */
 #if defined(CONFIG_NET_6LO_CONTEXT)
@@ -217,10 +217,10 @@
 static bool compare_data(struct net_pkt *pkt, struct net_6lo_data *data)
 {
 	struct net_buf *frag;
-	uint8_t bytes;
-	uint8_t compare;
-	uint8_t pos = 0;
-	uint8_t offset = 0;
+	u8_t bytes;
+	u8_t compare;
+	u8_t pos = 0;
+	u8_t offset = 0;
 	int remaining = data->small ? SIZE_OF_SMALL_DATA : SIZE_OF_LARGE_DATA;
 
 	if (data->nh_udp) {
@@ -258,17 +258,17 @@
 	frag = pkt->frags;
 
 	if (data->nh_udp) {
-		if (memcmp(frag->data, (uint8_t *)data, NET_IPV6UDPH_LEN)) {
+		if (memcmp(frag->data, (u8_t *)data, NET_IPV6UDPH_LEN)) {
 			TC_PRINT("mismatch headers\n");
 			return false;
 		}
 	} else	if (data->nh_icmp) {
-		if (memcmp(frag->data, (uint8_t *)data, NET_IPV6ICMPH_LEN)) {
+		if (memcmp(frag->data, (u8_t *)data, NET_IPV6ICMPH_LEN)) {
 			TC_PRINT("mismatch headers\n");
 			return false;
 		}
 	} else {
-		if (memcmp(frag->data, (uint8_t *)data, NET_IPV6H_LEN)) {
+		if (memcmp(frag->data, (u8_t *)data, NET_IPV6H_LEN)) {
 			TC_PRINT("mismatch headers\n");
 			return false;
 		}
@@ -305,8 +305,8 @@
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint8_t bytes, pos;
-	uint16_t len;
+	u8_t bytes, pos;
+	u16_t len;
 	int remaining;
 
 	pkt = net_pkt_get_reserve_tx(0, K_FOREVER);
@@ -330,14 +330,14 @@
 	}
 
 	if (data->nh_udp) {
-		memcpy(frag->data, (uint8_t *) data, NET_IPV6UDPH_LEN);
+		memcpy(frag->data, (u8_t *) data, NET_IPV6UDPH_LEN);
 		net_buf_add(frag, NET_IPV6UDPH_LEN);
 	} else if (data->nh_icmp) {
-		memcpy(frag->data, (uint8_t *) data, NET_IPV6ICMPH_LEN);
+		memcpy(frag->data, (u8_t *) data, NET_IPV6ICMPH_LEN);
 		net_buf_add(frag, NET_IPV6ICMPH_LEN);
 
 	} else {
-		memcpy(frag->data, (uint8_t *) data, NET_IPV6H_LEN);
+		memcpy(frag->data, (u8_t *) data, NET_IPV6H_LEN);
 		net_buf_add(frag, NET_IPV6H_LEN);
 	}
 
@@ -355,20 +355,20 @@
 	/* length is not set in net_6lo_data data pointer, calculate and set
 	 * in ipv6, udp and in data pointer too (it's required in comparison) */
 	frag->data[4] = len >> 8;
-	frag->data[5] = (uint8_t) len;
+	frag->data[5] = (u8_t) len;
 
 	data->ipv6.len[0] = len >> 8;
-	data->ipv6.len[1] = (uint8_t) len;
+	data->ipv6.len[1] = (u8_t) len;
 
 	if (data->nh_udp) {
 		frag->data[44] = len >> 8;
-		frag->data[45] = (uint8_t) len;
+		frag->data[45] = (u8_t) len;
 
 		data->nh.udp.len = htons(len);
 	}
 
 	while (remaining > 0) {
-		uint8_t copy;
+		u8_t copy;
 
 		bytes = net_buf_tailroom(frag);
 		copy = remaining > bytes ? bytes : remaining;
diff --git a/tests/net/arp/src/main.c b/tests/net/arp/src/main.c
index 4ab3159..d4029f8 100644
--- a/tests/net/arp/src/main.c
+++ b/tests/net/arp/src/main.c
@@ -30,7 +30,7 @@
 static char *app_data = "0123456789";
 
 struct net_arp_context {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -43,7 +43,7 @@
 	return 0;
 }
 
-static uint8_t *net_arp_get_mac(struct device *dev)
+static u8_t *net_arp_get_mac(struct device *dev)
 {
 	struct net_arp_context *context = dev->driver_data;
 
@@ -62,7 +62,7 @@
 
 static void net_arp_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_arp_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_arp_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, 6, NET_LINK_ETHERNET);
 }
@@ -107,12 +107,12 @@
 				char out[sizeof("xx:xx:xx:xx:xx:xx")];
 				snprintk(out, sizeof(out), "%s",
 					 net_sprint_ll_addr(
-						 (uint8_t *)&hdr->dst,
+						 (u8_t *)&hdr->dst,
 						 sizeof(struct net_eth_addr)));
 				printk("Invalid hwaddr %s, should be %s\n",
 				       out,
 				       net_sprint_ll_addr(
-					       (uint8_t *)&hwaddr,
+					       (u8_t *)&hwaddr,
 					       sizeof(struct net_eth_addr)));
 				send_status = -EINVAL;
 				return send_status;
@@ -124,12 +124,12 @@
 				char out[sizeof("xx:xx:xx:xx:xx:xx")];
 				snprintk(out, sizeof(out), "%s",
 					 net_sprint_ll_addr(
-						 (uint8_t *)&hdr->src,
+						 (u8_t *)&hdr->src,
 						 sizeof(struct net_eth_addr)));
 				printk("Invalid hwaddr %s, should be %s\n",
 				       out,
 				       net_sprint_ll_addr(
-					       (uint8_t *)&hwaddr,
+					       (u8_t *)&hwaddr,
 					       sizeof(struct net_eth_addr)));
 				send_status = -EINVAL;
 				return send_status;
@@ -270,7 +270,7 @@
 }
 
 static void setup_eth_header(struct net_if *iface, struct net_pkt *pkt,
-			     struct net_eth_addr *hwaddr, uint16_t type)
+			     struct net_eth_addr *hwaddr, u16_t type)
 {
 	struct net_eth_hdr *hdr = (struct net_eth_hdr *)net_pkt_ll(pkt);
 
@@ -402,7 +402,7 @@
 		net_hexdump("ETH dest wrong  ", net_pkt_ll(pkt2),
 			    sizeof(struct net_eth_addr));
 		net_hexdump("ETH dest correct",
-			    (uint8_t *)net_eth_broadcast_addr(),
+			    (u8_t *)net_eth_broadcast_addr(),
 			    sizeof(struct net_eth_addr));
 		return false;
 	}
diff --git a/tests/net/buf/src/main.c b/tests/net/buf/src/main.c
index 4404862..531835f 100644
--- a/tests/net/buf/src/main.c
+++ b/tests/net/buf/src/main.c
@@ -21,18 +21,18 @@
 	void *hci_sync;
 
 	union {
-		uint16_t hci_opcode;
-		uint16_t acl_handle;
+		u16_t hci_opcode;
+		u16_t acl_handle;
 	};
 
-	uint8_t type;
+	u8_t type;
 };
 
 struct in6_addr {
 	union {
-		uint8_t		u6_addr8[16];
-		uint16_t	u6_addr16[8]; /* In big endian */
-		uint32_t	u6_addr32[4]; /* In big endian */
+		u8_t		u6_addr8[16];
+		u16_t	u6_addr16[8]; /* In big endian */
+		u32_t	u6_addr32[4]; /* In big endian */
 	} in6_u;
 #define s6_addr			in6_u.u6_addr8
 #define s6_addr16		in6_u.u6_addr16
@@ -40,21 +40,21 @@
 };
 
 struct ipv6_hdr {
-	uint8_t vtc;
-	uint8_t tcflow;
-	uint16_t flow;
-	uint8_t len[2];
-	uint8_t nexthdr;
-	uint8_t hop_limit;
+	u8_t vtc;
+	u8_t tcflow;
+	u16_t flow;
+	u8_t len[2];
+	u8_t nexthdr;
+	u8_t hop_limit;
 	struct in6_addr src;
 	struct in6_addr dst;
 } __attribute__((__packed__));
 
 struct udp_hdr {
-	uint16_t src_port;
-	uint16_t dst_port;
-	uint16_t len;
-	uint16_t chksum;
+	u16_t src_port;
+	u16_t dst_port;
+	u16_t len;
+	u16_t chksum;
 } __attribute__((__packed__));
 
 static int destroy_called;
diff --git a/tests/net/context/src/main.c b/tests/net/context/src/main.c
index 089bfbb..5c082cd 100644
--- a/tests/net/context/src/main.c
+++ b/tests/net/context/src/main.c
@@ -1026,7 +1026,7 @@
 }
 
 struct net_context_test {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -1035,7 +1035,7 @@
 	return 0;
 }
 
-static uint8_t *net_context_get_mac(struct device *dev)
+static u8_t *net_context_get_mac(struct device *dev)
 {
 	struct net_context_test *context = dev->driver_data;
 
@@ -1054,7 +1054,7 @@
 
 static void net_context_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_context_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_context_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, sizeof(struct net_eth_addr),
 			     NET_LINK_ETHERNET);
@@ -1080,7 +1080,7 @@
 		/* We need to swap the IP addresses because otherwise
 		 * the packet will be dropped.
 		 */
-		uint16_t port;
+		u16_t port;
 
 		if (net_pkt_family(pkt) == AF_INET6) {
 			struct in6_addr addr;
diff --git a/tests/net/dhcpv4/src/main.c b/tests/net/dhcpv4/src/main.c
index 23c21e3..6750823 100644
--- a/tests/net/dhcpv4/src/main.c
+++ b/tests/net/dhcpv4/src/main.c
@@ -146,8 +146,8 @@
 #define REQUEST		3
 
 struct dhcp_msg {
-	uint32_t xid;
-	uint8_t type;
+	u32_t xid;
+	u8_t type;
 };
 
 static void test_result(bool pass)
@@ -162,7 +162,7 @@
 }
 
 struct net_dhcpv4_context {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -175,7 +175,7 @@
 	return 0;
 }
 
-static uint8_t *net_dhcpv4_get_mac(struct device *dev)
+static u8_t *net_dhcpv4_get_mac(struct device *dev)
 {
 	struct net_dhcpv4_context *context = dev->driver_data;
 
@@ -194,7 +194,7 @@
 
 static void net_dhcpv4_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_dhcpv4_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_dhcpv4_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, 6, NET_LINK_ETHERNET);
 }
@@ -223,7 +223,7 @@
 static void set_ipv4_header(struct net_pkt *pkt)
 {
 	struct net_ipv4_hdr *ipv4;
-	uint16_t length;
+	u16_t length;
 
 	ipv4 = NET_IPV4_HDR(pkt);
 
@@ -248,7 +248,7 @@
 static void set_udp_header(struct net_pkt *pkt)
 {
 	struct net_udp_hdr *udp;
-	uint16_t length;
+	u16_t length;
 
 	udp = NET_UDP_HDR(pkt);
 	udp->src_port = htons(SERVER_PORT);
@@ -259,12 +259,12 @@
 	udp->chksum = 0;
 }
 
-struct net_pkt *prepare_dhcp_offer(struct net_if *iface, uint32_t xid)
+struct net_pkt *prepare_dhcp_offer(struct net_if *iface, u32_t xid)
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	int bytes, remaining = sizeof(offer), pos = 0;
-	uint16_t offset;
+	u16_t offset;
 
 	pkt = net_pkt_get_reserve_rx(0, K_FOREVER);
 	if (!pkt) {
@@ -329,12 +329,12 @@
 	return NULL;
 }
 
-struct net_pkt *prepare_dhcp_ack(struct net_if *iface, uint32_t xid)
+struct net_pkt *prepare_dhcp_ack(struct net_if *iface, u32_t xid)
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	int bytes, remaining = sizeof(ack), pos = 0;
-	uint16_t offset;
+	u16_t offset;
 
 	pkt = net_pkt_get_reserve_rx(0, K_FOREVER);
 	if (!pkt) {
@@ -402,8 +402,8 @@
 static int parse_dhcp_message(struct net_pkt *pkt, struct dhcp_msg *msg)
 {
 	struct net_buf *frag = pkt->frags;
-	uint8_t type;
-	uint16_t offset;
+	u8_t type;
+	u16_t offset;
 
 	frag = net_frag_skip(frag, 0, &offset,
 			   /* size of op, htype, hlen, hops */
@@ -426,7 +426,7 @@
 	}
 
 	while (frag) {
-		uint8_t length;
+		u8_t length;
 
 		frag = net_frag_read_u8(frag, offset, &offset, &type);
 		if (!frag) {
@@ -519,7 +519,7 @@
 static struct net_mgmt_event_callback rx_cb;
 
 static void receiver_cb(struct net_mgmt_event_callback *cb,
-			uint32_t nm_event, struct net_if *iface)
+			u32_t nm_event, struct net_if *iface)
 {
 	test_result(true);
 }
diff --git a/tests/net/ieee802154/crypto/src/ieee802154_crypto_test.c b/tests/net/ieee802154/crypto/src/ieee802154_crypto_test.c
index 52860a4..a5c566b 100644
--- a/tests/net/ieee802154/crypto/src/ieee802154_crypto_test.c
+++ b/tests/net/ieee802154/crypto/src/ieee802154_crypto_test.c
@@ -26,7 +26,7 @@
 struct cipher_ctx dec;
 struct cipher_pkt pkt;
 struct cipher_aead_pkt apkt;
-uint8_t buf[128];
+u8_t buf[128];
 
 static void print_caps(struct device *dev)
 {
@@ -47,7 +47,7 @@
 	}
 }
 
-static void print_buffer(uint8_t *buf, uint8_t len)
+static void print_buffer(u8_t *buf, u8_t len)
 {
 	int i;
 
@@ -67,8 +67,8 @@
 	printk("\n");
 }
 
-static bool verify_result(uint8_t *result, int result_len,
-			  uint8_t *verify, int verify_len)
+static bool verify_result(u8_t *result, int result_len,
+			  u8_t *verify, int verify_len)
 {
 	if (result_len != verify_len) {
 		NET_ERR("Result and verification length don't match (%i vs %i)",
@@ -91,41 +91,41 @@
 
 static void ds_test(struct device *dev)
 {
-	uint8_t key[] = { 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
+	u8_t key[] = { 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
 			  0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf };
 
-	uint8_t auth_nonce[] = { 0xac, 0xde, 0x48, 0x00, 0x00, 0x00, 0x00,
+	u8_t auth_nonce[] = { 0xac, 0xde, 0x48, 0x00, 0x00, 0x00, 0x00,
 				 0x01, 0x00, 0x00, 0x00, 0x05, 0x02 };
 
-	uint8_t auth_data[] = { 0x08, 0xd0, 0x84, 0x21, 0x43, 0x01, 0x00,
+	u8_t auth_data[] = { 0x08, 0xd0, 0x84, 0x21, 0x43, 0x01, 0x00,
 				0x00, 0x00, 0x00, 0x48, 0xde, 0xac, 0x02,
 				0x05, 0x00, 0x00, 0x00, 0x55, 0xcf, 0x00,
 				0x00, 0x51, 0x52, 0x53, 0x54 };
-	uint8_t auth_result[] = { 0x08, 0xd0, 0x84, 0x21, 0x43, 0x01, 0x00,
+	u8_t auth_result[] = { 0x08, 0xd0, 0x84, 0x21, 0x43, 0x01, 0x00,
 				  0x00, 0x00, 0x00, 0x48, 0xde, 0xac, 0x02,
 				  0x05, 0x00, 0x00, 0x00, 0x55, 0xcf, 0x00,
 				  0x00, 0x51, 0x52, 0x53, 0x54, 0xca, 0x45,
 				  0x91, 0x8d, 0x3d, 0x82, 0xe5, 0xd0};
-	uint8_t enc_dec_nonce[] = { 0xac, 0xde, 0x48, 0x00, 0x00, 0x00, 0x00,
+	u8_t enc_dec_nonce[] = { 0xac, 0xde, 0x48, 0x00, 0x00, 0x00, 0x00,
 				    0x01, 0x00, 0x00, 0x00, 0x05, 0x04 };
-	uint8_t enc_dec_data[] = { 0x69, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
+	u8_t enc_dec_data[] = { 0x69, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
 				   0x00, 0x00, 0x00, 0x48, 0xde, 0xac, 0x01,
 				   0x00, 0x00, 0x00, 0x00, 0x48, 0xde, 0xac,
 				   0x04, 0x05, 0x00, 0x00, 0x00, 0x61, 0x62,
 				   0x63, 0x64 };
-	uint8_t enc_dec_result[] = { 0x69, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
+	u8_t enc_dec_result[] = { 0x69, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
 				     0x00, 0x00, 0x00, 0x48, 0xde, 0xac, 0x01,
 				     0x00, 0x00, 0x00, 0x00, 0x48, 0xde, 0xac,
 				     0x04, 0x05, 0x00, 0x00, 0x00, 0x7c, 0x64,
 				     0xc5, 0x0a };
-	uint8_t both_op_nonce[] = { 0xac, 0xde, 0x48, 0x00, 0x00, 0x00, 0x00,
+	u8_t both_op_nonce[] = { 0xac, 0xde, 0x48, 0x00, 0x00, 0x00, 0x00,
 				    0x01, 0x00, 0x00, 0x00, 0x05, 0x06 };
-	uint8_t both_op_data[] = { 0x2b, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
+	u8_t both_op_data[] = { 0x2b, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
 				   0x00, 0x00, 0x00, 0x48, 0xde, 0xac, 0xff,
 				   0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x48,
 				   0xde, 0xac, 0x06, 0x05, 0x00, 0x00, 0x00,
 				   0x01, 0xce };
-	uint8_t both_op_result[] = { 0x2b, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
+	u8_t both_op_result[] = { 0x2b, 0xdc, 0x84, 0x21, 0x43, 0x02, 0x00,
 				     0x00, 0x00, 0x00, 0x48, 0xde, 0xac, 0xff,
 				     0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x48,
 				     0xde, 0xac, 0x06, 0x05, 0x00, 0x00, 0x00,
diff --git a/tests/net/ieee802154/fragment/src/main.c b/tests/net/ieee802154/fragment/src/main.c
index 8f89ad5..d8adc03 100644
--- a/tests/net/ieee802154/fragment/src/main.c
+++ b/tests/net/ieee802154/fragment/src/main.c
@@ -150,7 +150,7 @@
 
 static void net_fragment_iface_init(struct net_if *iface)
 {
-	uint8_t mac[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xbb};
+	u8_t mac[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xbb};
 
 	net_if_set_link_addr(iface, mac, 8, NET_LINK_IEEE802154);
 }
@@ -175,7 +175,7 @@
 static bool compare_data(struct net_pkt *pkt, struct net_fragment_data *data)
 {
 	struct net_buf *frag;
-	uint8_t bytes, pos, compare, offset = 0;
+	u8_t bytes, pos, compare, offset = 0;
 	int remaining = data->len;
 
 	if (net_pkt_get_len(pkt) != (NET_IPV6UDPH_LEN + remaining)) {
@@ -187,7 +187,7 @@
 
 	frag = pkt->frags;
 
-	if (memcmp(frag->data, (uint8_t *)data, NET_IPV6UDPH_LEN)) {
+	if (memcmp(frag->data, (u8_t *)data, NET_IPV6UDPH_LEN)) {
 		printk("mismatch headers\n");
 		return false;
 	}
@@ -218,8 +218,8 @@
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint8_t bytes, pos;
-	uint16_t len;
+	u8_t bytes, pos;
+	u16_t len;
 	int remaining;
 
 	pkt = net_pkt_get_reserve_tx(0, K_FOREVER);
@@ -237,7 +237,7 @@
 		return NULL;
 	}
 
-	memcpy(frag->data, (uint8_t *) data, NET_IPV6UDPH_LEN);
+	memcpy(frag->data, (u8_t *) data, NET_IPV6UDPH_LEN);
 	net_buf_add(frag, NET_IPV6UDPH_LEN);
 
 	pos = 0;
@@ -247,16 +247,16 @@
 	/* length is not set in net_fragment_data data pointer, calculate and set
 	 * in ipv6, udp and in data pointer too (it's required in comparison) */
 	frag->data[4] = len >> 8;
-	frag->data[5] = (uint8_t) len;
+	frag->data[5] = (u8_t) len;
 	frag->data[44] = len >> 8;
-	frag->data[45] = (uint8_t) len;
+	frag->data[45] = (u8_t) len;
 
 	data->ipv6.len[0] = len >> 8;
-	data->ipv6.len[1] = (uint8_t) len;
+	data->ipv6.len[1] = (u8_t) len;
 	data->udp.len = htons(len);
 
 	while (remaining > 0) {
-		uint8_t copy;
+		u8_t copy;
 		bytes = net_buf_tailroom(frag);
 		copy = remaining > bytes ? bytes : remaining;
 		memcpy(net_buf_add(frag, copy), &user_data[pos], copy);
diff --git a/tests/net/ieee802154/l2/src/ieee802154_fake_driver.c b/tests/net/ieee802154/l2/src/ieee802154_fake_driver.c
index cc762f0..b7a6d73 100644
--- a/tests/net/ieee802154/l2/src/ieee802154_fake_driver.c
+++ b/tests/net/ieee802154/l2/src/ieee802154_fake_driver.c
@@ -24,28 +24,28 @@
 	return 0;
 }
 
-static int fake_set_channel(struct device *dev, uint16_t channel)
+static int fake_set_channel(struct device *dev, u16_t channel)
 {
 	NET_INFO("Channel %u\n", channel);
 
 	return 0;
 }
 
-static int fake_set_pan_id(struct device *dev, uint16_t pan_id)
+static int fake_set_pan_id(struct device *dev, u16_t pan_id)
 {
 	NET_INFO("PAN id 0x%x\n", pan_id);
 
 	return 0;
 }
 
-static int fake_set_short_addr(struct device *dev, uint16_t short_addr)
+static int fake_set_short_addr(struct device *dev, u16_t short_addr)
 {
 	NET_INFO("Short address: 0x%x\n", short_addr);
 
 	return 0;
 }
 
-static int fake_set_ieee_addr(struct device *dev, const uint8_t *ieee_addr)
+static int fake_set_ieee_addr(struct device *dev, const u8_t *ieee_addr)
 {
 	NET_INFO("IEEE address %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
 		 ieee_addr[0], ieee_addr[1], ieee_addr[2], ieee_addr[3],
@@ -54,7 +54,7 @@
 	return 0;
 }
 
-static int fake_set_txpower(struct device *dev, int16_t dbm)
+static int fake_set_txpower(struct device *dev, s16_t dbm)
 {
 	NET_INFO("TX power %d dbm\n", dbm);
 
@@ -112,7 +112,7 @@
 static void fake_iface_init(struct net_if *iface)
 {
 	struct ieee802154_context *ctx = net_if_l2_data(iface);
-	static uint8_t mac[8] = { 0x00, 0x12, 0x4b, 0x00,
+	static u8_t mac[8] = { 0x00, 0x12, 0x4b, 0x00,
 				  0x00, 0x9e, 0xa3, 0xc2 };
 
 	net_if_set_link_addr(iface, mac, 8, NET_LINK_IEEE802154);
diff --git a/tests/net/ieee802154/l2/src/ieee802154_test.c b/tests/net/ieee802154/l2/src/ieee802154_test.c
index 1fed0bc..057e452 100644
--- a/tests/net/ieee802154/l2/src/ieee802154_test.c
+++ b/tests/net/ieee802154/l2/src/ieee802154_test.c
@@ -22,8 +22,8 @@
 	char *name;
 	struct in6_addr src;
 	struct in6_addr dst;
-	uint8_t *pkt;
-	uint8_t length;
+	u8_t *pkt;
+	u8_t length;
 	struct {
 		struct ieee802154_fcf_seq *fc_seq;
 		struct ieee802154_address_field *dst_addr;
@@ -31,7 +31,7 @@
 	} mhr_check;
 };
 
-uint8_t ns_pkt[] = {
+u8_t ns_pkt[] = {
 	0x41, 0xd8, 0x3e, 0xcd, 0xab, 0xff, 0xff, 0xc2, 0xa3, 0x9e, 0x00,
 	0x00, 0x4b, 0x12, 0x00, 0x7b, 0x09, 0x3a, 0x20, 0x01, 0x0d, 0xb8,
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
@@ -55,7 +55,7 @@
 	.mhr_check.src_addr = (struct ieee802154_address_field *)(ns_pkt + 7),
 };
 
-uint8_t ack_pkt[] = { 0x02, 0x10, 0x16 };
+u8_t ack_pkt[] = { 0x02, 0x10, 0x16 };
 
 struct ieee802154_pkt_test test_ack_pkt = {
 	.name = "ACK frame",
@@ -66,7 +66,7 @@
 	.mhr_check.src_addr = NULL,
 };
 
-uint8_t beacon_pkt[] = {
+u8_t beacon_pkt[] = {
 	0x00, 0xd0, 0x11, 0xcd, 0xab, 0xc2, 0xa3, 0x9e, 0x00, 0x00, 0x4b,
 	0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 };
@@ -81,7 +81,7 @@
 	(struct ieee802154_address_field *) (beacon_pkt + 3),
 };
 
-uint8_t sec_data_pkt[] = {
+u8_t sec_data_pkt[] = {
 	0x49, 0xd8, 0x03, 0xcd, 0xab, 0xff, 0xff, 0x02, 0x6d, 0xbb, 0xa7,
 	0x00, 0x4b, 0x12, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0xd3, 0x8e,
 	0x49, 0xa7, 0xe2, 0x00, 0x67, 0xd4, 0x00, 0x42, 0x52, 0x6f, 0x01,
@@ -104,7 +104,7 @@
 struct k_sem driver_lock;
 struct net_if *iface;
 
-static void pkt_hexdump(uint8_t *pkt, uint8_t length)
+static void pkt_hexdump(u8_t *pkt, u8_t length)
 {
 	int i;
 
@@ -124,7 +124,7 @@
 	}
 }
 
-static void ieee_addr_hexdump(uint8_t *addr, uint8_t length)
+static void ieee_addr_hexdump(u8_t *addr, u8_t length)
 {
 	int i;
 
@@ -200,7 +200,7 @@
 
 static bool test_ack_reply(struct ieee802154_pkt_test *t)
 {
-	static uint8_t data_pkt[] = {
+	static u8_t data_pkt[] = {
 		0x61, 0xdc, 0x16, 0xcd, 0xab, 0x26, 0x11, 0x32, 0x00, 0x00, 0x4b,
 		0x12, 0x00, 0x26, 0x18, 0x32, 0x00, 0x00, 0x4b, 0x12, 0x00, 0x7b,
 		0x00, 0x3a, 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x00,
diff --git a/tests/net/iface/src/main.c b/tests/net/iface/src/main.c
index fef9d07..1c6f621 100644
--- a/tests/net/iface/src/main.c
+++ b/tests/net/iface/src/main.c
@@ -61,8 +61,8 @@
 #define WAIT_TIME 250
 
 struct net_if_test {
-	uint8_t idx;
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t idx;
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -71,7 +71,7 @@
 	return 0;
 }
 
-static uint8_t *net_iface_get_mac(struct device *dev)
+static u8_t *net_iface_get_mac(struct device *dev)
 {
 	struct net_if_test *data = dev->driver_data;
 
@@ -93,7 +93,7 @@
 
 static void net_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_iface_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_iface_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, sizeof(struct net_eth_addr),
 			     NET_LINK_ETHERNET);
@@ -280,7 +280,7 @@
 
 static bool send_iface(struct net_if *iface, int val, bool expect_fail)
 {
-	static uint8_t data[] = { 't', 'e', 's', 't', '\0' };
+	static u8_t data[] = { 't', 'e', 's', 't', '\0' };
 	struct net_pkt *pkt;
 	int ret;
 
diff --git a/tests/net/ip-addr/src/main.c b/tests/net/ip-addr/src/main.c
index 614778f..b346727 100644
--- a/tests/net/ip-addr/src/main.c
+++ b/tests/net/ip-addr/src/main.c
@@ -45,7 +45,7 @@
 
 #define TEST_LL_6(a, b, c, d, e, f, expected)				\
 	do {								\
-		uint8_t ll[] = { a, b, c, d, e, f };			\
+		u8_t ll[] = { a, b, c, d, e, f };			\
 		if (strcmp(net_sprint_ll_addr(ll, sizeof(ll)),		\
 			   expected)) {					\
 			printk("Test %s failed.\n", expected);		\
@@ -55,7 +55,7 @@
 
 #define TEST_LL_8(a, b, c, d, e, f, g, h, expected)			\
 	do {								\
-		uint8_t ll[] = { a, b, c, d, e, f, g, h };		\
+		u8_t ll[] = { a, b, c, d, e, f, g, h };		\
 		if (strcmp(net_sprint_ll_addr(ll, sizeof(ll)),		\
 			   expected)) {					\
 			printk("Test %s failed.\n", expected);		\
@@ -65,8 +65,8 @@
 
 #define TEST_LL_6_TWO(a, b, c, d, e, f, expected)			\
 	do {								\
-		uint8_t ll1[] = { a, b, c, d, e, f };			\
-		uint8_t ll2[] = { f, e, d, c, b, a };			\
+		u8_t ll1[] = { a, b, c, d, e, f };			\
+		u8_t ll2[] = { f, e, d, c, b, a };			\
 		char out[2 * sizeof("xx:xx:xx:xx:xx:xx") + 1 + 1];	\
 		snprintk(out, sizeof(out), "%s ",			\
 			 net_sprint_ll_addr(ll1, sizeof(ll1)));		\
@@ -101,7 +101,7 @@
 	} while (0)
 
 struct net_test_context {
-	uint8_t mac_addr[6];
+	u8_t mac_addr[6];
 	struct net_linkaddr ll_addr;
 };
 
@@ -114,7 +114,7 @@
 	return 0;
 }
 
-static uint8_t *net_test_get_mac(struct device *dev)
+static u8_t *net_test_get_mac(struct device *dev)
 {
 	struct net_test_context *context = dev->driver_data;
 
@@ -133,7 +133,7 @@
 
 static void net_test_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_test_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_test_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, 6, NET_LINK_ETHERNET);
 }
@@ -258,29 +258,29 @@
 		return false;
 	}
 
-	if (!net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
-				(uint8_t *)&addr6_pref2,
+	if (!net_is_ipv6_prefix((u8_t *)&addr6_pref1,
+				(u8_t *)&addr6_pref2,
 				64)) {
 		printk("Same IPv6 prefix test failed\n");
 		return false;
 	}
 
-	if (net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
-			       (uint8_t *)&addr6_pref3,
+	if (net_is_ipv6_prefix((u8_t *)&addr6_pref1,
+			       (u8_t *)&addr6_pref3,
 			       64)) {
 		printk("Different IPv6 prefix test failed\n");
 		return false;
 	}
 
-	if (net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
-			       (uint8_t *)&addr6_pref2,
+	if (net_is_ipv6_prefix((u8_t *)&addr6_pref1,
+			       (u8_t *)&addr6_pref2,
 			       128)) {
 		printk("Different full IPv6 prefix test failed\n");
 		return false;
 	}
 
-	if (net_is_ipv6_prefix((uint8_t *)&addr6_pref1,
-			       (uint8_t *)&addr6_pref3,
+	if (net_is_ipv6_prefix((u8_t *)&addr6_pref1,
+			       (u8_t *)&addr6_pref3,
 			       255)) {
 		printk("Too long prefix test failed\n");
 		return false;
diff --git a/tests/net/ipv6/src/main.c b/tests/net/ipv6/src/main.c
index 093fe5e..236d408 100644
--- a/tests/net/ipv6/src/main.c
+++ b/tests/net/ipv6/src/main.c
@@ -129,7 +129,7 @@
 #define PEER_PORT 16233
 
 struct net_test_ipv6 {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -138,7 +138,7 @@
 	return 0;
 }
 
-static uint8_t *net_test_get_mac(struct device *dev)
+static u8_t *net_test_get_mac(struct device *dev)
 {
 	struct net_test_ipv6 *context = dev->driver_data;
 
@@ -157,7 +157,7 @@
 
 static void net_test_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_test_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_test_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, sizeof(struct net_eth_addr),
 			     NET_LINK_ETHERNET);
@@ -281,13 +281,13 @@
 	struct in6_addr prefix2 = { { { 0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0,
 					0, 0, 0, 0, 0, 0, 0, 0x2 } } };
 
-	st = net_is_ipv6_prefix((uint8_t *)&prefix1, (uint8_t *)&prefix2, 64);
+	st = net_is_ipv6_prefix((u8_t *)&prefix1, (u8_t *)&prefix2, 64);
 	if (!st) {
 		TC_ERROR("Prefix /64  compare failed\n");
 		return false;
 	}
 
-	st = net_is_ipv6_prefix((uint8_t *)&prefix1, (uint8_t *)&prefix2, 65);
+	st = net_is_ipv6_prefix((u8_t *)&prefix1, (u8_t *)&prefix2, 65);
 	if (!st) {
 		TC_ERROR("Prefix /65 compare failed\n");
 		return false;
@@ -296,7 +296,7 @@
 	/* Set one extra bit in the other prefix for testing /65 */
 	prefix1.s6_addr[8] = 0x80;
 
-	st = net_is_ipv6_prefix((uint8_t *)&prefix1, (uint8_t *)&prefix2, 65);
+	st = net_is_ipv6_prefix((u8_t *)&prefix1, (u8_t *)&prefix2, 65);
 	if (st) {
 		TC_ERROR("Prefix /65 compare should have failed\n");
 		return false;
@@ -305,7 +305,7 @@
 	/* Set two bits in prefix2, it is now /66 */
 	prefix2.s6_addr[8] = 0xc0;
 
-	st = net_is_ipv6_prefix((uint8_t *)&prefix1, (uint8_t *)&prefix2, 65);
+	st = net_is_ipv6_prefix((u8_t *)&prefix1, (u8_t *)&prefix2, 65);
 	if (!st) {
 		TC_ERROR("Prefix /65 compare failed\n");
 		return false;
@@ -314,21 +314,21 @@
 	/* Set all remaining bits in prefix2, it is now /128 */
 	memset(&prefix2.s6_addr[8], 0xff, 8);
 
-	st = net_is_ipv6_prefix((uint8_t *)&prefix1, (uint8_t *)&prefix2, 65);
+	st = net_is_ipv6_prefix((u8_t *)&prefix1, (u8_t *)&prefix2, 65);
 	if (!st) {
 		TC_ERROR("Prefix /65 compare failed\n");
 		return false;
 	}
 
 	/* Comparing /64 should be still ok */
-	st = net_is_ipv6_prefix((uint8_t *)&prefix1, (uint8_t *)&prefix2, 64);
+	st = net_is_ipv6_prefix((u8_t *)&prefix1, (u8_t *)&prefix2, 64);
 	if (!st) {
 		TC_ERROR("Prefix /64 compare failed\n");
 		return false;
 	}
 
 	/* But comparing /66 should should fail */
-	st = net_is_ipv6_prefix((uint8_t *)&prefix1, (uint8_t *)&prefix2, 66);
+	st = net_is_ipv6_prefix((u8_t *)&prefix1, (u8_t *)&prefix2, 66);
 	if (st) {
 		TC_ERROR("Prefix /66 compare should have failed\n");
 		return false;
@@ -479,7 +479,7 @@
 	struct net_if_ipv6_prefix *prefix;
 	struct in6_addr addr = { { { 0x20, 1, 0x0d, 0xb8, 42, 0, 0, 0,
 				     0, 0, 0, 0, 0, 0, 0, 0 } } };
-	uint32_t lifetime = 1;
+	u32_t lifetime = 1;
 	int len = 64;
 
 	prefix = net_if_ipv6_prefix_add(net_if_get_default(),
@@ -594,7 +594,7 @@
 
 static bool net_test_change_ll_addr(void)
 {
-	uint8_t new_mac[] = { 00, 01, 02, 03, 04, 05 };
+	u8_t new_mac[] = { 00, 01, 02, 03, 04, 05 };
 	struct net_linkaddr_storage *ll;
 	struct net_linkaddr *ll_iface;
 	struct net_pkt *pkt;
@@ -602,7 +602,7 @@
 	struct in6_addr dst;
 	struct net_if *iface;
 	struct net_nbr *nbr;
-	uint32_t flags;
+	u32_t flags;
 	int ret;
 
 	net_ipv6_addr_create(&dst, 0xff02, 0, 0, 0, 0, 0, 0, 1);
diff --git a/tests/net/lib/dns_packet/src/dns_packet.c b/tests/net/lib/dns_packet/src/dns_packet.c
index 6b57b76..3afae81 100644
--- a/tests/net/lib/dns_packet/src/dns_packet.c
+++ b/tests/net/lib/dns_packet/src/dns_packet.c
@@ -13,11 +13,11 @@
 /* RFC 1035, 4.1.1. Header section format */
 #define DNS_HEADER_SIZE	12
 
-static uint8_t buf[MAX_BUF_SIZE];
-static uint16_t buf_len;
+static u8_t buf[MAX_BUF_SIZE];
+static u16_t buf_len;
 
-static uint8_t qname[MAX_BUF_SIZE];
-static uint16_t qname_len;
+static u8_t qname[MAX_BUF_SIZE];
+static u16_t qname_len;
 
 
 /* Domain: www.zephyrproject.org
@@ -25,19 +25,19 @@
  * Transaction ID: 0xda0f
  * Recursion desired
  */
-static uint8_t query_ipv4[] = { 0xda, 0x0f, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00,
+static u8_t query_ipv4[] = { 0xda, 0x0f, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00,
 				0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
 				0x0d, 0x7a, 0x65, 0x70, 0x68, 0x79, 0x72, 0x70,
 				0x72, 0x6f, 0x6a, 0x65, 0x63, 0x74, 0x03, 0x6f,
 				0x72, 0x67, 0x00, 0x00, 0x01, 0x00, 0x01 };
 
 #define DNAME1 "www.zephyrproject.org"
-static uint16_t tid1 = 0xda0f;
+static u16_t tid1 = 0xda0f;
 
-static int eval_query(const char *dname, uint16_t tid, enum dns_rr_type type,
-		      uint8_t *expected, uint16_t expected_len)
+static int eval_query(const char *dname, u16_t tid, enum dns_rr_type type,
+		      u8_t *expected, u16_t expected_len)
 {
-	uint8_t *question;
+	u8_t *question;
 	int rc;
 
 	rc = dns_msg_pack_qname(&qname_len, qname, MAX_BUF_SIZE, dname);
@@ -174,24 +174,24 @@
 	const char *dname;
 
 	/* expected result */
-	uint8_t *res;
+	u8_t *res;
 	/* expected result length */
-	uint16_t res_len;
+	u16_t res_len;
 
 	/* transaction id */
-	uint16_t tid;
+	u16_t tid;
 	/* A, AAAA */
-	uint8_t answer_type;
+	u8_t answer_type;
 	/* answer counter */
-	uint8_t ancount;
+	u8_t ancount;
 	/* answer TTL */
-	uint32_t ttl;
+	u32_t ttl;
 	/* recursion available */
-	uint8_t ra;
+	u8_t ra;
 	/* data len */
-	uint8_t rdlen;
+	u8_t rdlen;
 	/* data */
-	const uint8_t *rdata;
+	const u8_t *rdata;
 };
 
 /* This routine evaluates DNS responses with one RR, and assumes that the
@@ -199,8 +199,8 @@
  */
 static int eval_response1(struct dns_response_test *resp)
 {
-	uint8_t *ptr = resp->res;
-	uint16_t offset;
+	u8_t *ptr = resp->res;
+	u16_t offset;
 	int  rc;
 
 	if (resp->res_len < RESPONSE_MIN_SIZE) {
@@ -405,7 +405,7 @@
  * RD len: 4 (IPv4 Address)
  * RData: 140.211.169.8
  */
-static uint8_t resp_ipv4[] = { 0xb0, 0x41, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01,
+static u8_t resp_ipv4[] = { 0xb0, 0x41, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01,
 			       0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77, 0x77,
 			       0x0d, 0x7a, 0x65, 0x70, 0x68, 0x79, 0x72, 0x70,
 			       0x72, 0x6f, 0x6a, 0x65, 0x63, 0x74, 0x03, 0x6f,
@@ -413,7 +413,7 @@
 			       0x0c, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x0b,
 			       0xd4, 0x00, 0x04, 0x8c, 0xd3, 0xa9, 0x08 };
 
-static const uint8_t resp_ipv4_addr[] = {140, 211, 169, 8};
+static const u8_t resp_ipv4_addr[] = {140, 211, 169, 8};
 
 void test_dns_response(void)
 {
diff --git a/tests/net/lib/dns_resolve/src/main.c b/tests/net/lib/dns_resolve/src/main.c
index ef1053b..edb438e 100644
--- a/tests/net/lib/dns_resolve/src/main.c
+++ b/tests/net/lib/dns_resolve/src/main.c
@@ -56,15 +56,15 @@
 static bool timeout_query;
 static struct k_sem wait_data;
 static struct k_sem wait_data2;
-static uint16_t current_dns_id;
+static u16_t current_dns_id;
 static struct dns_addrinfo addrinfo;
 
 /* this must be higher that the DNS_TIMEOUT */
 #define WAIT_TIME (DNS_TIMEOUT + 300)
 
 struct net_if_test {
-	uint8_t idx;
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t idx;
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -73,7 +73,7 @@
 	return 0;
 }
 
-static uint8_t *net_iface_get_mac(struct device *dev)
+static u8_t *net_iface_get_mac(struct device *dev)
 {
 	struct net_if_test *data = dev->driver_data;
 
@@ -95,14 +95,14 @@
 
 static void net_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_iface_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_iface_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, sizeof(struct net_eth_addr),
 			     NET_LINK_ETHERNET);
 }
 
 static inline int get_slot_by_id(struct dns_resolve_context *ctx,
-				 uint16_t dns_id)
+				 u16_t dns_id)
 {
 	int i;
 
@@ -504,7 +504,7 @@
 static void dns_query_ipv4_cancel(void)
 {
 	int expected_status = DNS_EAI_CANCELED;
-	uint16_t dns_id;
+	u16_t dns_id;
 	int ret;
 
 	timeout_query = true;
@@ -530,7 +530,7 @@
 static void dns_query_ipv6_cancel(void)
 {
 	int expected_status = DNS_EAI_CANCELED;
-	uint16_t dns_id;
+	u16_t dns_id;
 	int ret;
 
 	timeout_query = true;
diff --git a/tests/net/lib/mqtt_packet/src/mqtt_packet.c b/tests/net/lib/mqtt_packet/src/mqtt_packet.c
index 29a99cd..d6d6dcb 100644
--- a/tests/net/lib/mqtt_packet/src/mqtt_packet.c
+++ b/tests/net/lib/mqtt_packet/src/mqtt_packet.c
@@ -21,8 +21,8 @@
 
 /* MQTT messages in this test are under 256 bytes */
 #define BUF_SIZE	256
-static uint8_t buf[BUF_SIZE];
-static uint16_t buf_len;
+static u8_t buf[BUF_SIZE];
+static u16_t buf_len;
 
 /**
  * @brief MQTT test structure
@@ -42,10 +42,10 @@
 	int (*eval_fcn)(struct mqtt_test *);
 
 	/* expected result */
-	uint8_t *expected;
+	u8_t *expected;
 
 	/* length of 'expected' */
-	uint16_t expected_len;
+	u16_t expected_len;
 };
 
 #define MAX_TOPICS	4
@@ -54,7 +54,7 @@
  * @brief MQTT SUBSCRIBE msg
  */
 struct msg_subscribe {
-	uint16_t pkt_id;
+	u16_t pkt_id;
 	int items;
 	const char *topics[MAX_TOPICS];
 	enum mqtt_qos qos[MAX_TOPICS];
@@ -64,7 +64,7 @@
  * @brief MQTT SUBACK msg
  */
 struct msg_suback {
-	uint16_t pkt_id;
+	u16_t pkt_id;
 	int elements;
 	enum mqtt_qos qos[MAX_TOPICS];
 };
@@ -74,7 +74,7 @@
  *	  PUBACK, PUBREC, PUBREL, PUBCOMP, UNSUBACK
  */
 struct msg_pkt_id {
-	uint16_t pkt_id;
+	u16_t pkt_id;
 };
 
 /**
@@ -195,15 +195,15 @@
  * @return			TC_PASS on success
  * @return			TC_FAIL on error and prints both buffers
  */
-static int eval_buffers(uint8_t *buf, uint16_t buf_len,
-			uint8_t *expected, uint16_t len);
+static int eval_buffers(u8_t *buf, u16_t buf_len,
+			u8_t *expected, u16_t len);
 
 /**
  * @brief print_array		Prints the array 'a' of 'size' elements
  * @param a			The array
  * @param size			Array's size
  */
-static void print_array(uint8_t *a, uint16_t size);
+static void print_array(u8_t *a, u16_t size);
 
 /**
  * @brief test_strlen		Computes the C string length allowing NULL as
@@ -224,7 +224,7 @@
  * mosquitto_sub -V mqttv311 -i zephyr -k 0 -t sensors
  */
 static
-uint8_t connect1[] = {0x10, 0x12, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
+u8_t connect1[] = {0x10, 0x12, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
 		      0x04, 0x02, 0x00, 0x00, 0x00, 0x06, 0x7a, 0x65,
 		      0x70, 0x68, 0x79, 0x72};
 
@@ -246,7 +246,7 @@
  * mosquitto_sub -V mqttv311 -i zephyr -k 365 -t sensors
  */
 static
-uint8_t connect2[] = {0x10, 0x12, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
+u8_t connect2[] = {0x10, 0x12, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
 		      0x04, 0x02, 0x01, 0x6d, 0x00, 0x06, 0x7a, 0x65,
 		      0x70, 0x68, 0x79, 0x72};
 
@@ -271,7 +271,7 @@
  * --will-qos 0 --will-payload bye
  */
 static
-uint8_t connect3[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
+u8_t connect3[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
 		      0x04, 0x06, 0x00, 0x00, 0x00, 0x06, 0x7a, 0x65,
 		      0x70, 0x68, 0x79, 0x72, 0x00, 0x08, 0x71, 0x75,
 		      0x69, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x00, 0x03,
@@ -283,7 +283,7 @@
 	.will_flag = 1,
 	.will_qos = 0, .will_retain = 0, .will_topic = WILL_TOPIC,
 	.will_topic_len = WILL_TOPIC_LEN,
-	.will_msg = (uint8_t *)"bye",
+	.will_msg = (u8_t *)"bye",
 	.will_msg_len = 3,
 	.keep_alive = 0, .user_name = NULL,
 	.password = NULL, .password_len = 0
@@ -298,7 +298,7 @@
  * --will-qos 0 --will-payload bye  --will-retain
  */
 static
-uint8_t connect4[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
+u8_t connect4[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
 		      0x04, 0x26, 0x00, 0x00, 0x00, 0x06, 0x7a, 0x65,
 		      0x70, 0x68, 0x79, 0x72, 0x00, 0x08, 0x71, 0x75,
 		      0x69, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x00, 0x03,
@@ -310,7 +310,7 @@
 	.will_flag = 1,
 	.will_qos = 0, .will_retain = 1, .will_topic = WILL_TOPIC,
 	.will_topic_len = WILL_TOPIC_LEN,
-	.will_msg = (uint8_t *)"bye",
+	.will_msg = (u8_t *)"bye",
 	.will_msg_len = 3,
 	.keep_alive = 0, .user_name = NULL,
 	.password = NULL, .password_len = 0
@@ -325,7 +325,7 @@
  * --will-qos 1 --will-payload bye
  */
 static
-uint8_t connect5[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
+u8_t connect5[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
 		      0x04, 0x0e, 0x00, 0x00, 0x00, 0x06, 0x7a, 0x65,
 		      0x70, 0x68, 0x79, 0x72, 0x00, 0x08, 0x71, 0x75,
 		      0x69, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x00, 0x03,
@@ -337,7 +337,7 @@
 	.will_flag = 1,
 	.will_qos = 1, .will_retain = 0, .will_topic = WILL_TOPIC,
 	.will_topic_len = WILL_TOPIC_LEN,
-	.will_msg = (uint8_t *)"bye",
+	.will_msg = (u8_t *)"bye",
 	.will_msg_len = 3,
 	.keep_alive = 0, .user_name = NULL,
 	.password = NULL, .password_len = 0
@@ -352,7 +352,7 @@
  * --will-qos 1 --will-payload bye --will-retain
  */
 static
-uint8_t connect6[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
+u8_t connect6[] = {0x10, 0x21, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
 		      0x04, 0x2e, 0x00, 0x00, 0x00, 0x06, 0x7a, 0x65,
 		      0x70, 0x68, 0x79, 0x72, 0x00, 0x08, 0x71, 0x75,
 		      0x69, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x00, 0x03,
@@ -364,7 +364,7 @@
 	.will_flag = 1,
 	.will_qos = 1, .will_retain = 1, .will_topic = WILL_TOPIC,
 	.will_topic_len = WILL_TOPIC_LEN,
-	.will_msg = (uint8_t *)"bye",
+	.will_msg = (u8_t *)"bye",
 	.will_msg_len = 3,
 	.keep_alive = 0, .user_name = NULL,
 	.password = NULL, .password_len = 0
@@ -380,7 +380,7 @@
  * --will-qos 1 --will-payload bye --will-retain -u zephyr1 -P password
  */
 static
-uint8_t connect7[] = {0x10, 0x34, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
+u8_t connect7[] = {0x10, 0x34, 0x00, 0x04, 0x4d, 0x51, 0x54, 0x54,
 		      0x04, 0xee, 0x00, 0x00, 0x00, 0x06, 0x7a, 0x65,
 		      0x70, 0x68, 0x79, 0x72, 0x00, 0x08, 0x71, 0x75,
 		      0x69, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x00, 0x03,
@@ -394,16 +394,16 @@
 	.will_flag = 1,
 	.will_qos = 1, .will_retain = 1, .will_topic = WILL_TOPIC,
 	.will_topic_len = WILL_TOPIC_LEN,
-	.will_msg = (uint8_t *)"bye",
+	.will_msg = (u8_t *)"bye",
 	.will_msg_len = 3,
 	.keep_alive = 0, .user_name = USERNAME,
 	.user_name_len = USERNAME_LEN,
-	.password = (uint8_t *)"password",
+	.password = (u8_t *)"password",
 	.password_len = 8
 };
 
 static
-uint8_t disconnect1[] = {0xe0, 0x00};
+u8_t disconnect1[] = {0xe0, 0x00};
 
 /*
  * MQTT PUBLISH msg:
@@ -413,14 +413,14 @@
  * mosquitto_pub -V mqttv311 -i zephyr -t sensors -q 0 -m "OK"
  */
 static
-uint8_t publish1[] = {0x30, 0x0b, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
+u8_t publish1[] = {0x30, 0x0b, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
 		      0x6f, 0x72, 0x73, 0x4f, 0x4b};
 
 static struct mqtt_publish_msg msg_publish1 = {
 	.dup = 0, .qos = 0, .retain = 0, .topic = TOPIC,
 	.topic_len = TOPIC_LEN,
 	.pkt_id = 0,
-	.msg = (uint8_t *)"OK",
+	.msg = (u8_t *)"OK",
 	.msg_len = 2,
 };
 
@@ -432,14 +432,14 @@
  * mosquitto_pub -V mqttv311 -i zephyr -t sensors -q 0 -m "OK" -r
  */
 static
-uint8_t publish2[] = {0x31, 0x0b, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
+u8_t publish2[] = {0x31, 0x0b, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
 		      0x6f, 0x72, 0x73, 0x4f, 0x4b};
 
 static struct mqtt_publish_msg msg_publish2 = {
 	.dup = 0, .qos = 0, .retain = 1, .topic = TOPIC,
 	.topic_len = TOPIC_LEN,
 	.pkt_id = 0,
-	.msg = (uint8_t *)"OK",
+	.msg = (u8_t *)"OK",
 	.msg_len = 2
 };
 
@@ -451,14 +451,14 @@
  * mosquitto_pub -V mqttv311 -i zephyr -t sensors -q 1 -m "OK" -r
  */
 static
-uint8_t publish3[] = {0x33, 0x0d, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
+u8_t publish3[] = {0x33, 0x0d, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
 		      0x6f, 0x72, 0x73, 0x00, 0x01, 0x4f, 0x4b};
 
 static struct mqtt_publish_msg msg_publish3 = {
 	.dup = 0, .qos = 1, .retain = 1, .topic = TOPIC,
 	.topic_len = TOPIC_LEN,
 	.pkt_id = 1,
-	.msg = (uint8_t *)"OK",
+	.msg = (u8_t *)"OK",
 	.msg_len = 2
 };
 
@@ -470,13 +470,13 @@
  * mosquitto_pub -V mqttv311 -i zephyr -t sensors -q 2 -m "OK"
  */
 static
-uint8_t publish4[] = {0x34, 0x0d, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
+u8_t publish4[] = {0x34, 0x0d, 0x00, 0x07, 0x73, 0x65, 0x6e, 0x73,
 		      0x6f, 0x72, 0x73, 0x00, 0x01, 0x4f, 0x4b};
 static struct mqtt_publish_msg msg_publish4 = {
 	.dup = 0, .qos = 2, .retain = 0, .topic = TOPIC,
 	.topic_len = TOPIC_LEN,
 	.pkt_id = 1,
-	.msg = (uint8_t *)"OK",
+	.msg = (u8_t *)"OK",
 	.msg_len = 2
 };
 
@@ -488,7 +488,7 @@
  * mosquitto_sub -V mqttv311 -i zephyr -t sensors -q 0
  */
 static
-uint8_t subscribe1[] = {0x82, 0x0c, 0x00, 0x01, 0x00, 0x07, 0x73, 0x65,
+u8_t subscribe1[] = {0x82, 0x0c, 0x00, 0x01, 0x00, 0x07, 0x73, 0x65,
 			0x6e, 0x73, 0x6f, 0x72, 0x73, 0x00};
 static struct msg_subscribe msg_subscribe1 = {
 	 .pkt_id = 1, .items = 1,
@@ -503,7 +503,7 @@
  * mosquitto_sub -V mqttv311 -i zephyr -t sensors -q 1
  */
 static
-uint8_t subscribe2[] = {0x82, 0x0c, 0x00, 0x01, 0x00, 0x07, 0x73, 0x65,
+u8_t subscribe2[] = {0x82, 0x0c, 0x00, 0x01, 0x00, 0x07, 0x73, 0x65,
 			0x6e, 0x73, 0x6f, 0x72, 0x73, 0x01};
 static struct msg_subscribe msg_subscribe2 = {
 	 .pkt_id = 1, .items = 1,
@@ -518,7 +518,7 @@
  * mosquitto_sub -V mqttv311 -i zephyr -t sensors -q 2
  */
 static
-uint8_t subscribe3[] = {0x82, 0x0c, 0x00, 0x01, 0x00, 0x07, 0x73, 0x65,
+u8_t subscribe3[] = {0x82, 0x0c, 0x00, 0x01, 0x00, 0x07, 0x73, 0x65,
 			0x6e, 0x73, 0x6f, 0x72, 0x73, 0x02};
 static struct msg_subscribe msg_subscribe3 = {
 	 .pkt_id = 1, .items = 1,
@@ -533,7 +533,7 @@
  * mosquitto_sub -V mqttv311 -i zephyr -t sensors -q 0
  */
 static
-uint8_t suback1[] = {0x90, 0x03, 0x00, 0x01, 0x00};
+u8_t suback1[] = {0x90, 0x03, 0x00, 0x01, 0x00};
 static struct msg_suback msg_suback1 = {
 	.pkt_id = 1, .elements = 1, .qos = {MQTT_QoS0}
 };
@@ -546,7 +546,7 @@
  * mosquitto_sub -V mqttv311 -i zephyr -t sensors -q 1
  */
 static
-uint8_t suback2[] = {0x90, 0x03, 0x00, 0x01, 0x01};
+u8_t suback2[] = {0x90, 0x03, 0x00, 0x01, 0x01};
 static struct msg_suback msg_suback2 = {
 	.pkt_id = 1, .elements = 1, .qos = {MQTT_QoS1}
 };
@@ -559,35 +559,35 @@
  * mosquitto_sub -V mqttv311 -i zephyr -t sensors -q 2
  */
 static
-uint8_t suback3[] = {0x90, 0x03, 0x00, 0x01, 0x02};
+u8_t suback3[] = {0x90, 0x03, 0x00, 0x01, 0x02};
 static struct msg_suback msg_suback3 = {
 	.pkt_id = 1, .elements = 1, .qos = {MQTT_QoS2}
 };
 
 static
-uint8_t pingreq1[] = {0xc0, 0x00};
+u8_t pingreq1[] = {0xc0, 0x00};
 
 static
-uint8_t pingresp1[] = {0xd0, 0x00};
+u8_t pingresp1[] = {0xd0, 0x00};
 
 static
-uint8_t puback1[] = {0x40, 0x02, 0x00, 0x01};
+u8_t puback1[] = {0x40, 0x02, 0x00, 0x01};
 static struct msg_pkt_id msg_puback1 = {.pkt_id = 1};
 
 static
-uint8_t pubrec1[] = {0x50, 0x02, 0x00, 0x01};
+u8_t pubrec1[] = {0x50, 0x02, 0x00, 0x01};
 static struct msg_pkt_id msg_pubrec1 = {.pkt_id = 1};
 
 static
-uint8_t pubrel1[] = {0x62, 0x02, 0x00, 0x01};
+u8_t pubrel1[] = {0x62, 0x02, 0x00, 0x01};
 static struct msg_pkt_id msg_pubrel1 = {.pkt_id = 1};
 
 static
-uint8_t pubcomp1[] = {0x70, 0x02, 0x00, 0x01};
+u8_t pubcomp1[] = {0x70, 0x02, 0x00, 0x01};
 static struct msg_pkt_id msg_pubcomp1 = {.pkt_id = 1};
 
 static
-uint8_t unsuback1[] = {0xb0, 0x02, 0x00, 0x01};
+u8_t unsuback1[] = {0xb0, 0x02, 0x00, 0x01};
 static struct msg_pkt_id msg_unsuback1 = {.pkt_id = 1};
 
 static
@@ -696,9 +696,9 @@
 	{.test_name = NULL}
 };
 
-static void print_array(uint8_t *a, uint16_t size)
+static void print_array(u8_t *a, u16_t size)
 {
-	uint16_t i;
+	u16_t i;
 
 	TC_PRINT("\n");
 	for (i = 0; i < size; i++) {
@@ -720,8 +720,8 @@
 }
 
 static
-int eval_buffers(uint8_t *buf, uint16_t buf_len, uint8_t *expected,
-		 uint16_t len)
+int eval_buffers(u8_t *buf, u16_t buf_len, u8_t *expected,
+		 u16_t len)
 {
 	if (buf_len != len) {
 		goto exit_eval;
@@ -950,10 +950,10 @@
 static
 int eval_msg_packet_id(struct mqtt_test *mqtt_test, enum mqtt_packet type)
 {
-	int (*pack)(uint8_t *, uint16_t *, uint16_t, uint16_t) = NULL;
-	int (*unpack)(uint8_t *, uint16_t, uint16_t *) = NULL;
+	int (*pack)(u8_t *, u16_t *, u16_t, u16_t) = NULL;
+	int (*unpack)(u8_t *, u16_t, u16_t *) = NULL;
 	struct msg_pkt_id *msg = (struct msg_pkt_id *)mqtt_test->msg;
-	uint16_t pkt_id;
+	u16_t pkt_id;
 	int rc;
 
 	switch (type) {
diff --git a/tests/net/lib/mqtt_publisher/src/test_mqtt_publish.c b/tests/net/lib/mqtt_publisher/src/test_mqtt_publish.c
index 07275ad..2d9129e 100644
--- a/tests/net/lib/mqtt_publisher/src/test_mqtt_publish.c
+++ b/tests/net/lib/mqtt_publisher/src/test_mqtt_publish.c
@@ -64,7 +64,7 @@
 
 /* This routine sets some basic properties for the network context variable */
 static int network_setup(struct net_context **net_ctx, const char *local_addr,
-		const char *server_addr, uint16_t server_port);
+		const char *server_addr, u16_t server_port);
 
 /* The signature of this routine must match the connect callback declared at
  * the mqtt.h header.
@@ -117,7 +117,7 @@
  * unknown pkt_id, this routine must return an error, for example -EINVAL or
  * any negative value.
  */
-static int publish_cb(struct mqtt_ctx *mqtt_ctx, uint16_t pkt_id,
+static int publish_cb(struct mqtt_ctx *mqtt_ctx, u16_t pkt_id,
 		enum mqtt_packet type)
 {
 	struct mqtt_client_ctx *client_ctx;
@@ -157,7 +157,7 @@
  * The signature of this routine must match the malformed callback declared at
  * the mqtt.h header.
  */
-static void malformed_cb(struct mqtt_ctx *mqtt_ctx, uint16_t pkt_type)
+static void malformed_cb(struct mqtt_ctx *mqtt_ctx, u16_t pkt_type)
 {
 	TC_PRINT("[%s:%d] pkt_type: %u\n", __func__, __LINE__, pkt_type);
 }
@@ -178,9 +178,9 @@
 		enum mqtt_qos qos)
 {
 	/* MQTT message payload may be anything, we we use C strings */
-	pub_msg->msg = (uint8_t *)get_mqtt_payload(qos);
+	pub_msg->msg = (u8_t *)get_mqtt_payload(qos);
 	/* Payload's length */
-	pub_msg->msg_len = (uint16_t)strlen((char *)client_ctx.pub_msg.msg);
+	pub_msg->msg_len = (u16_t)strlen((char *)client_ctx.pub_msg.msg);
 	/* MQTT Quality of Service */
 	pub_msg->qos = qos;
 	/* Message's topic */
@@ -327,7 +327,7 @@
 	return TC_PASS;
 }
 
-static int set_addr(struct sockaddr *sock_addr, const char *addr, uint16_t port)
+static int set_addr(struct sockaddr *sock_addr, const char *addr, u16_t port)
 {
 	void *ptr;
 	int rc;
@@ -352,7 +352,7 @@
 }
 
 static int network_setup(struct net_context **net_ctx, const char *local_addr,
-		const char *server_addr, uint16_t server_port)
+		const char *server_addr, u16_t server_port)
 {
 #ifdef CONFIG_NET_IPV6
 	socklen_t addr_len = sizeof(struct sockaddr_in6);
diff --git a/tests/net/lib/mqtt_subscriber/src/test_mqtt_subscribe.c b/tests/net/lib/mqtt_subscriber/src/test_mqtt_subscribe.c
index 15afd89..1b923a7 100644
--- a/tests/net/lib/mqtt_subscriber/src/test_mqtt_subscribe.c
+++ b/tests/net/lib/mqtt_subscriber/src/test_mqtt_subscribe.c
@@ -68,7 +68,7 @@
 
 /* This routine sets some basic properties for the network context variable */
 static int network_setup(struct net_context **net_ctx, const char *local_addr,
-			 const char *server_addr, uint16_t server_port);
+			 const char *server_addr, u16_t server_port);
 
 /* The signature of this routine must match the connect callback declared at
  * the mqtt.h header.
@@ -122,7 +122,7 @@
  * any negative value.
  */
 static int publish_rx_cb(struct mqtt_ctx *mqtt_ctx, struct mqtt_publish_msg
-		*msg, uint16_t pkt_id, enum mqtt_packet type)
+		*msg, u16_t pkt_id, enum mqtt_packet type)
 {
 	struct mqtt_client_ctx *client_ctx;
 	const char *str;
@@ -160,8 +160,8 @@
  * The signature of this routine must match the subscribe callback declared at
  * the mqtt.h header.
  */
-static int subscriber_cb(struct mqtt_ctx *mqtt_ctx, uint16_t pkt_id,
-		uint8_t items, enum mqtt_qos qos[])
+static int subscriber_cb(struct mqtt_ctx *mqtt_ctx, u16_t pkt_id,
+		u8_t items, enum mqtt_qos qos[])
 {
 	struct mqtt_client_ctx *client_ctx;
 
@@ -184,7 +184,7 @@
  * The signature of this routine must match the unsubscribe callback declared at
  * the mqtt.h header.
  */
-static int unsubscribe_cb(struct mqtt_ctx *mqtt_ctx, uint16_t pkt_id)
+static int unsubscribe_cb(struct mqtt_ctx *mqtt_ctx, u16_t pkt_id)
 {
 	struct mqtt_client_ctx *client_ctx;
 
@@ -206,7 +206,7 @@
  * The signature of this routine must match the malformed callback declared at
  * the mqtt.h header.
  */
-static void malformed_cb(struct mqtt_ctx *mqtt_ctx, uint16_t pkt_type)
+static void malformed_cb(struct mqtt_ctx *mqtt_ctx, u16_t pkt_type)
 {
 	printk("[%s:%d] pkt_type: %u\n", __func__, __LINE__, pkt_type);
 }
@@ -323,7 +323,7 @@
 {
 	int rc;
 	const char *topic_sub = get_mqtt_topic();
-	uint16_t pkt_id_sub = sys_rand32_get();
+	u16_t pkt_id_sub = sys_rand32_get();
 	static enum mqtt_qos  mqtt_qos_sub[1];
 
 	rc = mqtt_tx_subscribe(&client_ctx.mqtt_ctx, pkt_id_sub, 1,
@@ -340,7 +340,7 @@
 {
 	int rc;
 	const char *topic_sub = get_mqtt_topic();
-	uint16_t pkt_id_unsub = sys_rand32_get();
+	u16_t pkt_id_unsub = sys_rand32_get();
 
 	rc = mqtt_tx_unsubscribe(&client_ctx.mqtt_ctx, pkt_id_unsub,
 			1, &topic_sub);
@@ -364,7 +364,7 @@
 	return TC_PASS;
 }
 
-static int set_addr(struct sockaddr *sock_addr, const char *addr, uint16_t port)
+static int set_addr(struct sockaddr *sock_addr, const char *addr, u16_t port)
 {
 	void *ptr;
 	int rc;
@@ -389,7 +389,7 @@
 }
 
 static int network_setup(struct net_context **net_ctx, const char *local_addr,
-		const char *server_addr, uint16_t server_port)
+		const char *server_addr, u16_t server_port)
 {
 #ifdef CONFIG_NET_IPV6
 	socklen_t addr_len = sizeof(struct sockaddr_in6);
diff --git a/tests/net/lib/zoap/src/main.c b/tests/net/lib/zoap/src/main.c
index cf36555..041bcb4 100644
--- a/tests/net/lib/zoap/src/main.c
+++ b/tests/net/lib/zoap/src/main.c
@@ -62,7 +62,7 @@
 
 static int test_build_empty_pdu(void)
 {
-	uint8_t result_pdu[] = { 0x40, 0x01, 0x0, 0x0 };
+	u8_t result_pdu[] = { 0x40, 0x01, 0x0, 0x0 };
 	struct zoap_packet zpkt;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
@@ -116,16 +116,16 @@
 
 static int test_build_simple_pdu(void)
 {
-	uint8_t result_pdu[] = { 0x55, 0xA5, 0x12, 0x34, 't', 'o', 'k', 'e',
+	u8_t result_pdu[] = { 0x55, 0xA5, 0x12, 0x34, 't', 'o', 'k', 'e',
 				 'n', 0xC1, 0x00, 0xFF, 'p', 'a', 'y', 'l',
 				 'o', 'a', 'd', 0x00 };
 	struct zoap_packet zpkt;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	const char token[] = "token";
-	uint8_t *appdata, payload[] = "payload";
-	uint16_t buflen;
-	uint8_t format = 0;
+	u8_t *appdata, payload[] = "payload";
+	u16_t buflen;
+	u8_t format = 0;
 	int result = TC_FAIL;
 	int r;
 
@@ -155,7 +155,7 @@
 			      ZOAP_RESPONSE_CODE_PROXYING_NOT_SUPPORTED);
 	zoap_header_set_id(&zpkt, 0x1234);
 
-	r = zoap_header_set_token(&zpkt, (uint8_t *)token, strlen(token));
+	r = zoap_header_set_token(&zpkt, (u8_t *)token, strlen(token));
 	if (r) {
 		TC_PRINT("Could not set token\n");
 		goto done;
@@ -220,7 +220,7 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	const char token[] = "token";
-	uint8_t format = 0;
+	u8_t format = 0;
 	int result = TC_FAIL;
 	int r;
 
@@ -250,7 +250,7 @@
 			      ZOAP_RESPONSE_CODE_PROXYING_NOT_SUPPORTED);
 	zoap_header_set_id(&zpkt, 0x1234);
 
-	r = zoap_header_set_token(&zpkt, (uint8_t *)token, strlen(token));
+	r = zoap_header_set_token(&zpkt, (u8_t *)token, strlen(token));
 	if (r) {
 		TC_PRINT("Could not set token\n");
 		goto done;
@@ -276,12 +276,12 @@
 
 static int test_parse_empty_pdu(void)
 {
-	uint8_t pdu[] = { 0x40, 0x01, 0, 0 };
+	u8_t pdu[] = { 0x40, 0x01, 0, 0 };
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_packet zpkt;
-	uint8_t ver, type, code;
-	uint16_t id;
+	u8_t ver, type, code;
+	u16_t id;
 	int result = TC_FAIL;
 	int r;
 
@@ -345,16 +345,16 @@
 
 static int test_parse_simple_pdu(void)
 {
-	uint8_t pdu[] = { 0x55, 0xA5, 0x12, 0x34, 't', 'o', 'k', 'e',
+	u8_t pdu[] = { 0x55, 0xA5, 0x12, 0x34, 't', 'o', 'k', 'e',
 			  'n',  0x00, 0xc1, 0x00, 0xff, 'p', 'a', 'y',
 			  'l', 'o', 'a', 'd', 0x00 };
 	struct zoap_packet zpkt;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct zoap_option options[16];
-	uint8_t ver, type, code, tkl;
-	const uint8_t *token, *payload;
-	uint16_t id, len;
+	u8_t ver, type, code, tkl;
+	const u8_t *token, *payload;
+	u16_t id, len;
 	int result = TC_FAIL;
 	int r, count = 16;
 
@@ -435,7 +435,7 @@
 		goto done;
 	}
 
-	if (((uint8_t *)options[0].value)[0] != 0) {
+	if (((u8_t *)options[0].value)[0] != 0) {
 		TC_PRINT("Option value doesn't match the reference\n");
 		goto done;
 	}
@@ -476,7 +476,7 @@
 	struct net_buf *frag;
 	int result = TC_FAIL;
 	int r;
-	uint16_t id;
+	u16_t id;
 
 	pkt = net_pkt_get_reserve(&zoap_pkt_slab, 0, K_NO_WAIT);
 	if (!pkt) {
@@ -621,9 +621,9 @@
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	char payload[] = "This is the payload";
-	const uint8_t *token;
-	uint8_t tkl, *p;
-	uint16_t id, len;
+	const u8_t *token;
+	u8_t tkl, *p;
+	u16_t id, len;
 	int r;
 
 	if (!zoap_request_is_observe(request)) {
@@ -689,13 +689,13 @@
 
 static int test_observer_server(void)
 {
-	uint8_t valid_request_pdu[] = {
+	u8_t valid_request_pdu[] = {
 		0x45, 0x01, 0x12, 0x34,
 		't', 'o', 'k', 'e', 'n',
 		0x60, /* enable observe option */
 		0x51, 's', 0x01, '1', /* path */
 	};
-	uint8_t not_found_request_pdu[] = {
+	u8_t not_found_request_pdu[] = {
 		0x45, 0x01, 0x12, 0x34,
 		't', 'o', 'k', 'e', 'n',
 		0x60, /* enable observe option */
@@ -835,7 +835,7 @@
 	zoap_header_set_code(&req, ZOAP_METHOD_GET);
 	zoap_header_set_id(&req, zoap_next_id());
 	zoap_header_set_token(&req,
-			      (const uint8_t *) token, strlen(token));
+			      (const u8_t *) token, strlen(token));
 
 	/* Enable observing the resource. */
 	r = zoap_add_option_int(&req, ZOAP_OPTION_OBSERVE,
@@ -918,8 +918,8 @@
 	struct net_pkt *pkt = NULL;
 	struct net_buf *frag;
 	const char token[] = "rndtoken";
-	uint8_t *payload;
-	uint16_t len;
+	u8_t *payload;
+	u16_t len;
 	int result = TC_FAIL;
 	int r;
 
@@ -951,7 +951,7 @@
 	zoap_header_set_code(&req, ZOAP_METHOD_POST);
 	zoap_header_set_id(&req, zoap_next_id());
 	zoap_header_set_token(&req,
-			      (const uint8_t *) token, strlen(token));
+			      (const u8_t *) token, strlen(token));
 
 	zoap_add_block1_option(&req, &req_ctx);
 	zoap_add_size1_option(&req, &req_ctx);
@@ -1021,7 +1021,7 @@
 	zoap_header_set_code(&req, ZOAP_METHOD_POST);
 	zoap_header_set_id(&req, zoap_next_id());
 	zoap_header_set_token(&req,
-			      (const uint8_t *) token, strlen(token));
+			      (const u8_t *) token, strlen(token));
 
 	zoap_add_block1_option(&req, &req_ctx);
 
diff --git a/tests/net/mgmt/src/mgmt.c b/tests/net/mgmt/src/mgmt.c
index ef2008f..f24dd79 100644
--- a/tests/net/mgmt/src/mgmt.c
+++ b/tests/net/mgmt/src/mgmt.c
@@ -18,28 +18,28 @@
 #define TEST_MGMT_EVENT_UNHANDLED	0x97AB4321
 
 /* Notifier infra */
-static uint32_t event2throw;
-static uint32_t throw_times;
+static u32_t event2throw;
+static u32_t throw_times;
 static int throw_sleep;
 static char __noinit __stack thrower_stack[512];
 static struct k_sem thrower_lock;
 
 /* Receiver infra */
-static uint32_t rx_event;
-static uint32_t rx_calls;
+static u32_t rx_event;
+static u32_t rx_calls;
 static struct net_mgmt_event_callback rx_cb;
 
 static struct in6_addr addr6 = { { { 0xfe, 0x80, 0, 0, 0, 0, 0, 0,
 				     0, 0, 0, 0, 0, 0, 0, 0x1 } } };
 
-static int test_mgmt_request(uint32_t mgmt_request,
-			     struct net_if *iface, void *data, uint32_t len)
+static int test_mgmt_request(u32_t mgmt_request,
+			     struct net_if *iface, void *data, u32_t len)
 {
-	uint32_t *test_data = data;
+	u32_t *test_data = data;
 
 	ARG_UNUSED(iface);
 
-	if (len == sizeof(uint32_t)) {
+	if (len == sizeof(u32_t)) {
 		*test_data = 1;
 
 		return 0;
@@ -59,7 +59,7 @@
 
 static void fake_iface_init(struct net_if *iface)
 {
-	uint8_t mac[8] = { 0x00, 0x00, 0x00, 0x00, 0x0a, 0x0b, 0x0c, 0x0d};
+	u8_t mac[8] = { 0x00, 0x00, 0x00, 0x00, 0x0a, 0x0b, 0x0c, 0x0d};
 
 	net_if_set_link_addr(iface, mac, 8, NET_LINK_DUMMY);
 }
@@ -82,7 +82,7 @@
 
 static inline int test_requesting_nm(void)
 {
-	uint32_t data = 0;
+	u32_t data = 0;
 
 	TC_PRINT("- Request Net MGMT\n");
 
@@ -111,7 +111,7 @@
 }
 
 static void receiver_cb(struct net_mgmt_event_callback *cb,
-			uint32_t nm_event, struct net_if *iface)
+			u32_t nm_event, struct net_if *iface)
 {
 	TC_PRINT("\t\tReceived event 0x%08X\n", nm_event);
 
@@ -119,7 +119,7 @@
 	rx_calls++;
 }
 
-static inline int test_sending_event(uint32_t times, bool receiver)
+static inline int test_sending_event(u32_t times, bool receiver)
 {
 	int ret = TC_PASS;
 
@@ -156,9 +156,9 @@
 	return ret;
 }
 
-static int test_synchronous_event_listener(uint32_t times, bool on_iface)
+static int test_synchronous_event_listener(u32_t times, bool on_iface)
 {
-	uint32_t event_mask;
+	u32_t event_mask;
 	int ret;
 
 	TC_PRINT("- Synchronous event listener %s\n",
@@ -210,7 +210,7 @@
 		       NULL, NULL, NULL, K_PRIO_COOP(7), 0, 0);
 }
 
-static int test_core_event(uint32_t event, bool (*func)(void))
+static int test_core_event(u32_t event, bool (*func)(void))
 {
 	int ret = TC_PASS;
 
diff --git a/tests/net/mld/src/main.c b/tests/net/mld/src/main.c
index dcf2a4a..2c3c1d7 100644
--- a/tests/net/mld/src/main.c
+++ b/tests/net/mld/src/main.c
@@ -57,7 +57,7 @@
 #define PEER_PORT 13856
 
 struct net_test_mld {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -66,7 +66,7 @@
 	return 0;
 }
 
-static uint8_t *net_test_get_mac(struct device *dev)
+static u8_t *net_test_get_mac(struct device *dev)
 {
 	struct net_test_mld *context = dev->driver_data;
 
@@ -85,7 +85,7 @@
 
 static void net_test_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_test_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_test_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, sizeof(struct net_eth_addr),
 			     NET_LINK_ETHERNET);
@@ -133,7 +133,7 @@
 		127);
 
 static void group_joined(struct net_mgmt_event_callback *cb,
-			 uint32_t nm_event, struct net_if *iface)
+			 u32_t nm_event, struct net_if *iface)
 {
 	is_group_joined = true;
 
@@ -141,7 +141,7 @@
 }
 
 static void group_left(struct net_mgmt_event_callback *cb,
-			 uint32_t nm_event, struct net_if *iface)
+			 u32_t nm_event, struct net_if *iface)
 {
 	is_group_left = true;
 
@@ -149,7 +149,7 @@
 }
 
 static struct mgmt_events {
-	uint32_t event;
+	u32_t event;
 	net_mgmt_event_handler_t handler;
 	struct net_mgmt_event_callback cb;
 } mgmt_events[] = {
@@ -288,7 +288,7 @@
 {
 	struct net_pkt *pkt;
 	struct in6_addr dst;
-	uint16_t pos;
+	u16_t pos;
 
 	/* Sent to all MLDv2-capable routers */
 	net_ipv6_addr_create(&dst, 0xff02, 0, 0, 0, 0, 0, 0, 0x0016);
@@ -326,7 +326,7 @@
 	net_pkt_append_be16(pkt, 0); /* reserved field */
 
 	net_pkt_append(pkt, sizeof(struct in6_addr),
-		       (const uint8_t *)net_ipv6_unspecified_address(),
+		       (const u8_t *)net_ipv6_unspecified_address(),
 		       K_FOREVER); /* multicast address */
 
 	net_pkt_append_be16(pkt, 0); /* Resv, S, QRV and QQIC */
diff --git a/tests/net/net_pkt/src/main.c b/tests/net/net_pkt/src/main.c
index 179634e..163ca02 100644
--- a/tests/net/net_pkt/src/main.c
+++ b/tests/net/net_pkt/src/main.c
@@ -24,27 +24,27 @@
 #define FRAG_COUNT 7
 
 struct ipv6_hdr {
-	uint8_t vtc;
-	uint8_t tcflow;
-	uint16_t flow;
-	uint8_t len[2];
-	uint8_t nexthdr;
-	uint8_t hop_limit;
+	u8_t vtc;
+	u8_t tcflow;
+	u16_t flow;
+	u8_t len[2];
+	u8_t nexthdr;
+	u8_t hop_limit;
 	struct in6_addr src;
 	struct in6_addr dst;
 } __packed;
 
 struct udp_hdr {
-	uint16_t src_port;
-	uint16_t dst_port;
-	uint16_t len;
-	uint16_t chksum;
+	u16_t src_port;
+	u16_t dst_port;
+	u16_t len;
+	u16_t chksum;
 } __packed;
 
 struct icmp_hdr {
-	uint8_t type;
-	uint8_t code;
-	uint16_t chksum;
+	u8_t type;
+	u8_t code;
+	u16_t chksum;
 } __packed;
 
 static const char example_data[] =
@@ -286,7 +286,7 @@
 				  '5', '6', '7' };
 
 #if HEXDUMP
-static void hexdump(const char *str, const uint8_t *packet, size_t length)
+static void hexdump(const char *str, const u8_t *packet, size_t length)
 {
 	int n = 0;
 
@@ -348,19 +348,19 @@
 static int test_pkt_read_append(void)
 {
 	int remaining = strlen(sample_data);
-	uint8_t verify_rw_short[sizeof(test_rw_short)];
-	uint8_t verify_rw_long[sizeof(test_rw_long)];
+	u8_t verify_rw_short[sizeof(test_rw_short)];
+	u8_t verify_rw_long[sizeof(test_rw_long)];
 	struct net_pkt *pkt;
 	struct net_buf *frag;
 	struct net_buf *tfrag;
 	struct ipv6_hdr *ipv6;
 	struct udp_hdr *udp;
-	uint8_t data[10];
+	u8_t data[10];
 	int pos = 0;
 	int bytes;
-	uint16_t off;
-	uint16_t tpos;
-	uint16_t fail_pos;
+	u16_t off;
+	u16_t tpos;
+	u16_t fail_pos;
 
 	/* Example of multi fragment read, append and skip APS's */
 	pkt = net_pkt_get_reserve_rx(0, K_FOREVER);
@@ -508,27 +508,27 @@
 	tfrag = net_buf_frag_last(pkt->frags);
 	off = tfrag->len;
 
-	if (!net_pkt_append(pkt, (uint16_t)sizeof(test_rw_short),
+	if (!net_pkt_append(pkt, (u16_t)sizeof(test_rw_short),
 			    test_rw_short, K_FOREVER)) {
 		printk("net_pkt_append failed\n");
 		return -EINVAL;
 	}
 
-	if (!net_pkt_append(pkt, (uint16_t)sizeof(test_rw_short),
+	if (!net_pkt_append(pkt, (u16_t)sizeof(test_rw_short),
 			    test_rw_short, K_FOREVER)) {
 		printk("net_pkt_append failed\n");
 		return -EINVAL;
 	}
 
 	tfrag = net_frag_skip(tfrag, off, &tpos,
-			     (uint16_t)sizeof(test_rw_short));
+			     (u16_t)sizeof(test_rw_short));
 	if (!tfrag) {
 		printk("net_frag_skip failed\n");
 		return -EINVAL;
 	}
 
 	tfrag = net_frag_read(tfrag, tpos, &tpos,
-			     (uint16_t)sizeof(test_rw_short),
+			     (u16_t)sizeof(test_rw_short),
 			     verify_rw_short);
 	if (memcmp(test_rw_short, verify_rw_short, sizeof(test_rw_short))) {
 		printk("net_frag_read failed with mismatch data");
@@ -546,27 +546,27 @@
 	tfrag = net_buf_frag_last(pkt->frags);
 	off = tfrag->len;
 
-	if (!net_pkt_append(pkt, (uint16_t)sizeof(test_rw_long), test_rw_long,
+	if (!net_pkt_append(pkt, (u16_t)sizeof(test_rw_long), test_rw_long,
 			    K_FOREVER)) {
 		printk("net_pkt_append failed\n");
 		return -EINVAL;
 	}
 
-	if (!net_pkt_append(pkt, (uint16_t)sizeof(test_rw_long), test_rw_long,
+	if (!net_pkt_append(pkt, (u16_t)sizeof(test_rw_long), test_rw_long,
 			    K_FOREVER)) {
 		printk("net_pkt_append failed\n");
 		return -EINVAL;
 	}
 
 	tfrag = net_frag_skip(tfrag, off, &tpos,
-			      (uint16_t)sizeof(test_rw_long));
+			      (u16_t)sizeof(test_rw_long));
 	if (!tfrag) {
 		printk("net_frag_skip failed\n");
 		return -EINVAL;
 	}
 
 	tfrag = net_frag_read(tfrag, tpos, &tpos,
-			     (uint16_t)sizeof(test_rw_long),
+			     (u16_t)sizeof(test_rw_long),
 			     verify_rw_long);
 	if (memcmp(test_rw_long, verify_rw_long, sizeof(test_rw_long))) {
 		printk("net_frag_read failed with mismatch data");
@@ -586,10 +586,10 @@
 	struct net_buf *temp_frag;
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint8_t read_data[100];
-	uint16_t read_pos;
-	uint16_t len;
-	uint16_t pos;
+	u8_t read_data[100];
+	u16_t read_pos;
+	u16_t len;
+	u16_t pos;
 
 	/* Example of multi fragment read, append and skip APS's */
 	pkt = net_pkt_get_reserve_rx(0, K_FOREVER);
@@ -605,7 +605,7 @@
 	 * and write data).
 	 */
 	frag = net_pkt_write(pkt, frag, NET_IPV6UDPH_LEN, &pos, 10,
-			     (uint8_t *)sample_data, K_FOREVER);
+			     (u8_t *)sample_data, K_FOREVER);
 	if (!frag || pos != 58) {
 		printk("Usecase 1: Write failed\n");
 		return -EINVAL;
@@ -628,7 +628,7 @@
 	 * there shouldn't be any length change).
 	 */
 	frag = net_pkt_write(pkt, frag, 0, &pos, NET_IPV6UDPH_LEN,
-			     (uint8_t *)sample_data, K_FOREVER);
+			     (u8_t *)sample_data, K_FOREVER);
 	if (!frag || pos != 48) {
 		printk("Usecase 2: Write failed\n");
 		return -EINVAL;
@@ -657,7 +657,7 @@
 	 * create empty fragments(space) till offset and write data).
 	 */
 	frag = net_pkt_write(pkt, pkt->frags, 200, &pos, 10,
-			     (uint8_t *)sample_data + 10, K_FOREVER);
+			     (u8_t *)sample_data + 10, K_FOREVER);
 	if (!frag) {
 		printk("Usecase 3: Write failed");
 	}
@@ -680,7 +680,7 @@
 	 * the existing data.
 	 */
 	frag = net_pkt_write(pkt, pkt->frags, 190, &pos, 10,
-			     (uint8_t *)sample_data, K_FOREVER);
+			     (u8_t *)sample_data, K_FOREVER);
 	if (!frag) {
 		printk("Usecase 4: Write failed\n");
 		return -EINVAL;
@@ -715,7 +715,7 @@
 	/* Create 10 bytes space. */
 	net_buf_add(frag, 10);
 
-	frag = net_pkt_write(pkt, frag, 0, &pos, 20, (uint8_t *)sample_data,
+	frag = net_pkt_write(pkt, frag, 0, &pos, 20, (u8_t *)sample_data,
 			     K_FOREVER);
 	if (!frag && pos != 20) {
 		printk("Usecase 5: Write failed\n");
@@ -773,7 +773,7 @@
 	net_buf_add(frag, 5);
 
 	temp_frag = net_pkt_write(pkt, temp_frag, temp_frag->len - 10, &pos,
-				  30, (uint8_t *) sample_data, K_FOREVER);
+				  30, (u8_t *) sample_data, K_FOREVER);
 	if (!temp_frag) {
 		printk("Use case 6: Write failed\n");
 		return -EINVAL;
@@ -810,7 +810,7 @@
 	net_pkt_frag_add(pkt, frag);
 
 	frag = net_pkt_write(pkt, frag, NET_IPV6UDPH_LEN, &pos, 10,
-			     (uint8_t *)sample_data + 10, K_FOREVER);
+			     (u8_t *)sample_data + 10, K_FOREVER);
 	if (!frag || pos != 58) {
 		printk("Usecase 7: Write failed\n");
 		return -EINVAL;
@@ -829,7 +829,7 @@
 	}
 
 	if (!net_pkt_insert(pkt, frag, NET_IPV6UDPH_LEN, 10,
-			    (uint8_t *)sample_data, K_FOREVER)) {
+			    (u8_t *)sample_data, K_FOREVER)) {
 		printk("Usecase 7: Insert failed\n");
 		return -EINVAL;
 	}
@@ -847,7 +847,7 @@
 	}
 
 	/* Insert data outside input fragment length, error case. */
-	if (net_pkt_insert(pkt, frag, 70, 10, (uint8_t *)sample_data,
+	if (net_pkt_insert(pkt, frag, 70, 10, (u8_t *)sample_data,
 			   K_FOREVER)) {
 		printk("Usecase 7: False insert failed\n");
 		return -EINVAL;
@@ -872,7 +872,7 @@
 	net_pkt_frag_add(pkt, frag);
 
 	frag = net_pkt_write(pkt, frag, NET_IPV6UDPH_LEN, &pos, 10,
-			     (uint8_t *)sample_data + 60, K_FOREVER);
+			     (u8_t *)sample_data + 60, K_FOREVER);
 	if (!frag || pos != 58) {
 		printk("Usecase 8: Write failed\n");
 		return -EINVAL;
@@ -891,7 +891,7 @@
 	}
 
 	if (!net_pkt_insert(pkt, frag, NET_IPV6UDPH_LEN, 60,
-			    (uint8_t *)sample_data, K_FOREVER)) {
+			    (u8_t *)sample_data, K_FOREVER)) {
 		printk("Usecase 8: Insert failed\n");
 		return -EINVAL;
 	}
diff --git a/tests/net/route/src/main.c b/tests/net/route/src/main.c
index 2cb717e..d783263 100644
--- a/tests/net/route/src/main.c
+++ b/tests/net/route/src/main.c
@@ -83,7 +83,7 @@
 #define WAIT_TIME 250
 
 struct net_route_test {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -92,7 +92,7 @@
 	return 0;
 }
 
-static uint8_t *net_route_get_mac(struct device *dev)
+static u8_t *net_route_get_mac(struct device *dev)
 {
 	struct net_route_test *route = dev->driver_data;
 
@@ -114,7 +114,7 @@
 
 static void net_route_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_route_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_route_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, sizeof(struct net_eth_addr),
 			     NET_LINK_ETHERNET);
diff --git a/tests/net/rpl/src/main.c b/tests/net/rpl/src/main.c
index 87564ae..bdf1bba 100644
--- a/tests/net/rpl/src/main.c
+++ b/tests/net/rpl/src/main.c
@@ -71,7 +71,7 @@
 #define WAIT_TIME 250
 
 struct net_rpl_test {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -80,7 +80,7 @@
 	return 0;
 }
 
-static uint8_t *net_rpl_get_mac(struct device *dev)
+static u8_t *net_rpl_get_mac(struct device *dev)
 {
 	struct net_rpl_test *rpl = dev->driver_data;
 
@@ -99,7 +99,7 @@
 
 static void net_rpl_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_rpl_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_rpl_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, sizeof(struct net_eth_addr),
 			     NET_LINK_ETHERNET);
diff --git a/tests/net/tcp/src/main.c b/tests/net/tcp/src/main.c
index a7a9294..420c330 100644
--- a/tests/net/tcp/src/main.c
+++ b/tests/net/tcp/src/main.c
@@ -76,7 +76,7 @@
 static bool syn_v6_sent;
 
 struct net_tcp_context {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -89,7 +89,7 @@
 	return 0;
 }
 
-static uint8_t *net_tcp_get_mac(struct device *dev)
+static u8_t *net_tcp_get_mac(struct device *dev)
 {
 	struct net_tcp_context *context = dev->driver_data;
 
@@ -108,7 +108,7 @@
 
 static void net_tcp_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_tcp_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_tcp_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, 6, NET_LINK_ETHERNET);
 }
@@ -209,8 +209,8 @@
 struct ud {
 	const struct sockaddr *remote_addr;
 	const struct sockaddr *local_addr;
-	uint16_t remote_port;
-	uint16_t local_port;
+	u16_t remote_port;
+	u16_t local_port;
 	char *test;
 	struct net_conn_handle *handle;
 };
@@ -257,8 +257,8 @@
 static void setup_ipv6_tcp(struct net_pkt *pkt,
 			   struct in6_addr *remote_addr,
 			   struct in6_addr *local_addr,
-			   uint16_t remote_port,
-			   uint16_t local_port)
+			   u16_t remote_port,
+			   u16_t local_port)
 {
 	NET_IPV6_HDR(pkt)->vtc = 0x60;
 	NET_IPV6_HDR(pkt)->tcflow = 0;
@@ -286,8 +286,8 @@
 static void setup_ipv4_tcp(struct net_pkt *pkt,
 			   struct in_addr *remote_addr,
 			   struct in_addr *local_addr,
-			   uint16_t remote_port,
-			   uint16_t local_port)
+			   u16_t remote_port,
+			   u16_t local_port)
 {
 	NET_IPV4_HDR(pkt)->vhl = 0x45;
 	NET_IPV4_HDR(pkt)->tos = 0;
@@ -316,8 +316,8 @@
 static bool send_ipv6_tcp_msg(struct net_if *iface,
 			      struct in6_addr *src,
 			      struct in6_addr *dst,
-			      uint16_t src_port,
-			      uint16_t dst_port,
+			      u16_t src_port,
+			      u16_t dst_port,
 			      struct ud *ud,
 			      bool expect_failure)
 {
@@ -367,8 +367,8 @@
 static bool send_ipv4_tcp_msg(struct net_if *iface,
 			      struct in_addr *src,
 			      struct in_addr *dst,
-			      uint16_t src_port,
-			      uint16_t dst_port,
+			      u16_t src_port,
+			      u16_t dst_port,
 			      struct ud *ud,
 			      bool expect_failure)
 {
@@ -416,8 +416,8 @@
 }
 
 static void set_port(sa_family_t family, struct sockaddr *raddr,
-		     struct sockaddr *laddr, uint16_t rport,
-		     uint16_t lport)
+		     struct sockaddr *laddr, u16_t rport,
+		     u16_t lport)
 {
 	if (family == AF_INET6) {
 		if (raddr) {
@@ -679,7 +679,7 @@
 
 static bool v6_check_port_and_address(char *test_str, struct net_pkt *pkt,
 				      const struct in6_addr *expected_dst_addr,
-				      uint16_t expected_dst_port)
+				      u16_t expected_dst_port)
 {
 	if (!net_ipv6_addr_cmp(&NET_IPV6_HDR(pkt)->src,
 			       &my_v6_addr.sin6_addr)) {
@@ -719,7 +719,7 @@
 
 static bool v4_check_port_and_address(char *test_str, struct net_pkt *pkt,
 				      const struct in_addr *expected_dst_addr,
-				      uint16_t expected_dst_port)
+				      u16_t expected_dst_port)
 {
 	if (!net_ipv4_addr_cmp(&NET_IPV4_HDR(pkt)->src,
 			       &my_v4_addr.sin_addr)) {
@@ -760,7 +760,7 @@
 static bool test_create_v6_reset_packet(void)
 {
 	struct net_tcp *tcp = v6_ctx->tcp;
-	uint8_t flags = NET_TCP_RST;
+	u8_t flags = NET_TCP_RST;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -791,7 +791,7 @@
 static bool test_create_v4_reset_packet(void)
 {
 	struct net_tcp *tcp = v4_ctx->tcp;
-	uint8_t flags = NET_TCP_RST;
+	u8_t flags = NET_TCP_RST;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -822,7 +822,7 @@
 static bool test_create_v6_syn_packet(void)
 {
 	struct net_tcp *tcp = v6_ctx->tcp;
-	uint8_t flags = NET_TCP_SYN;
+	u8_t flags = NET_TCP_SYN;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -853,7 +853,7 @@
 static bool test_create_v4_syn_packet(void)
 {
 	struct net_tcp *tcp = v4_ctx->tcp;
-	uint8_t flags = NET_TCP_SYN;
+	u8_t flags = NET_TCP_SYN;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -884,7 +884,7 @@
 static bool test_create_v6_synack_packet(void)
 {
 	struct net_tcp *tcp = v6_ctx->tcp;
-	uint8_t flags = NET_TCP_SYN | NET_TCP_ACK;
+	u8_t flags = NET_TCP_SYN | NET_TCP_ACK;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -916,7 +916,7 @@
 static bool test_create_v4_synack_packet(void)
 {
 	struct net_tcp *tcp = v4_ctx->tcp;
-	uint8_t flags = NET_TCP_SYN | NET_TCP_ACK;
+	u8_t flags = NET_TCP_SYN | NET_TCP_ACK;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -948,7 +948,7 @@
 static bool test_create_v6_fin_packet(void)
 {
 	struct net_tcp *tcp = v6_ctx->tcp;
-	uint8_t flags = NET_TCP_FIN;
+	u8_t flags = NET_TCP_FIN;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -979,7 +979,7 @@
 static bool test_create_v4_fin_packet(void)
 {
 	struct net_tcp *tcp = v4_ctx->tcp;
-	uint8_t flags = NET_TCP_FIN;
+	u8_t flags = NET_TCP_FIN;
 	struct net_pkt *pkt = NULL;
 	int ret;
 
@@ -1010,9 +1010,9 @@
 static bool test_v6_seq_check(void)
 {
 	struct net_tcp *tcp = v6_ctx->tcp;
-	uint8_t flags = NET_TCP_SYN;
+	u8_t flags = NET_TCP_SYN;
 	struct net_pkt *pkt = NULL;
-	uint32_t seq;
+	u32_t seq;
 	int ret;
 
 	ret = net_tcp_prepare_segment(tcp, flags, NULL, 0, NULL,
@@ -1042,9 +1042,9 @@
 static bool test_v4_seq_check(void)
 {
 	struct net_tcp *tcp = v4_ctx->tcp;
-	uint8_t flags = NET_TCP_SYN;
+	u8_t flags = NET_TCP_SYN;
 	struct net_pkt *pkt = NULL;
-	uint32_t seq;
+	u32_t seq;
 	int ret;
 
 	ret = net_tcp_prepare_segment(tcp, flags, NULL, 0, NULL,
diff --git a/tests/net/udp/src/main.c b/tests/net/udp/src/main.c
index 1e96b56..673b077 100644
--- a/tests/net/udp/src/main.c
+++ b/tests/net/udp/src/main.c
@@ -38,7 +38,7 @@
 static struct k_sem recv_lock;
 
 struct net_udp_context {
-	uint8_t mac_addr[sizeof(struct net_eth_addr)];
+	u8_t mac_addr[sizeof(struct net_eth_addr)];
 	struct net_linkaddr ll_addr;
 };
 
@@ -51,7 +51,7 @@
 	return 0;
 }
 
-static uint8_t *net_udp_get_mac(struct device *dev)
+static u8_t *net_udp_get_mac(struct device *dev)
 {
 	struct net_udp_context *context = dev->driver_data;
 
@@ -70,7 +70,7 @@
 
 static void net_udp_iface_init(struct net_if *iface)
 {
-	uint8_t *mac = net_udp_get_mac(net_if_get_device(iface));
+	u8_t *mac = net_udp_get_mac(net_if_get_device(iface));
 
 	net_if_set_link_addr(iface, mac, 6, NET_LINK_ETHERNET);
 }
@@ -126,8 +126,8 @@
 struct ud {
 	const struct sockaddr *remote_addr;
 	const struct sockaddr *local_addr;
-	uint16_t remote_port;
-	uint16_t local_port;
+	u16_t remote_port;
+	u16_t local_port;
 	char *test;
 	void *handle;
 };
@@ -174,8 +174,8 @@
 static void setup_ipv6_udp(struct net_pkt *pkt,
 			   struct in6_addr *remote_addr,
 			   struct in6_addr *local_addr,
-			   uint16_t remote_port,
-			   uint16_t local_port)
+			   u16_t remote_port,
+			   u16_t local_port)
 {
 	NET_IPV6_HDR(pkt)->vtc = 0x60;
 	NET_IPV6_HDR(pkt)->tcflow = 0;
@@ -203,8 +203,8 @@
 static void setup_ipv4_udp(struct net_pkt *pkt,
 			   struct in_addr *remote_addr,
 			   struct in_addr *local_addr,
-			   uint16_t remote_port,
-			   uint16_t local_port)
+			   u16_t remote_port,
+			   u16_t local_port)
 {
 	NET_IPV4_HDR(pkt)->vhl = 0x45;
 	NET_IPV4_HDR(pkt)->tos = 0;
@@ -233,8 +233,8 @@
 static bool send_ipv6_udp_msg(struct net_if *iface,
 			      struct in6_addr *src,
 			      struct in6_addr *dst,
-			      uint16_t src_port,
-			      uint16_t dst_port,
+			      u16_t src_port,
+			      u16_t dst_port,
 			      struct ud *ud,
 			      bool expect_failure)
 {
@@ -281,8 +281,8 @@
 static bool send_ipv4_udp_msg(struct net_if *iface,
 			      struct in_addr *src,
 			      struct in_addr *dst,
-			      uint16_t src_port,
-			      uint16_t dst_port,
+			      u16_t src_port,
+			      u16_t dst_port,
 			      struct ud *ud,
 			      bool expect_failure)
 {
@@ -327,8 +327,8 @@
 }
 
 static void set_port(sa_family_t family, struct sockaddr *raddr,
-		     struct sockaddr *laddr, uint16_t rport,
-		     uint16_t lport)
+		     struct sockaddr *laddr, u16_t rport,
+		     u16_t lport)
 {
 	if (family == AF_INET6) {
 		if (raddr) {
diff --git a/tests/net/utils/src/main.c b/tests/net/utils/src/main.c
index e00c676..4ea1097 100644
--- a/tests/net/utils/src/main.c
+++ b/tests/net/utils/src/main.c
@@ -151,7 +151,7 @@
 {
 	struct net_pkt *pkt;
 	struct net_buf *frag;
-	uint16_t chksum, orig_chksum;
+	u16_t chksum, orig_chksum;
 	int hdr_len, i, chunk, datalen, total = 0;
 
 	/* Packet fits to one fragment */