| /* main.c - Application main entry point */ |
| |
| /* |
| * Copyright (c) 2015-2016 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define SYS_LOG_DOMAIN "ipsp" |
| #define SYS_LOG_LEVEL SYS_LOG_LEVEL_DEBUG |
| #include <logging/sys_log.h> |
| |
| #include <zephyr.h> |
| #include <linker/sections.h> |
| #include <errno.h> |
| #include <stdio.h> |
| |
| #include <net/net_pkt.h> |
| #include <net/net_if.h> |
| #include <net/net_core.h> |
| #include <net/net_context.h> |
| #include <net/udp.h> |
| |
| /* admin-local, dynamically allocated multicast address */ |
| #define MCAST_IP6ADDR { { { 0xff, 0x84, 0, 0, 0, 0, 0, 0, \ |
| 0, 0, 0, 0, 0, 0, 0, 0x2 } } } |
| |
| struct in6_addr in6addr_mcast = MCAST_IP6ADDR; |
| |
| /* Define my IP address where to expect messages */ |
| #define MY_IP6ADDR { { { 0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0, \ |
| 0, 0, 0, 0, 0, 0, 0, 0x1 } } } |
| #define MY_PREFIX_LEN 64 |
| |
| static struct in6_addr in6addr_my = MY_IP6ADDR; |
| |
| #define MY_PORT 4242 |
| |
| #define STACKSIZE 2000 |
| K_THREAD_STACK_DEFINE(thread_stack, STACKSIZE); |
| static struct k_thread thread_data; |
| |
| #define MAX_DBG_PRINT 64 |
| |
| NET_PKT_TX_SLAB_DEFINE(echo_tx_tcp, 15); |
| NET_PKT_DATA_POOL_DEFINE(echo_data_tcp, 30); |
| |
| static struct k_mem_slab *tx_tcp_pool(void) |
| { |
| return &echo_tx_tcp; |
| } |
| |
| static struct net_buf_pool *data_tcp_pool(void) |
| { |
| return &echo_data_tcp; |
| } |
| |
| static struct k_sem quit_lock; |
| |
| static inline void quit(void) |
| { |
| k_sem_give(&quit_lock); |
| } |
| |
| static inline void init_app(void) |
| { |
| SYS_LOG_INF("Run IPSP sample"); |
| |
| k_sem_init(&quit_lock, 0, UINT_MAX); |
| |
| if (net_addr_pton(AF_INET6, |
| CONFIG_NET_APP_MY_IPV6_ADDR, |
| &in6addr_my) < 0) { |
| SYS_LOG_ERR("Invalid IPv6 address %s", |
| CONFIG_NET_APP_MY_IPV6_ADDR); |
| } |
| |
| do { |
| struct net_if_addr *ifaddr; |
| |
| ifaddr = net_if_ipv6_addr_add(net_if_get_default(), |
| &in6addr_my, NET_ADDR_MANUAL, 0); |
| } while (0); |
| |
| net_if_ipv6_maddr_add(net_if_get_default(), &in6addr_mcast); |
| } |
| |
| static inline bool get_context(struct net_context **udp_recv6, |
| struct net_context **tcp_recv6, |
| struct net_context **mcast_recv6) |
| { |
| int ret; |
| struct sockaddr_in6 mcast_addr6 = { 0 }; |
| struct sockaddr_in6 my_addr6 = { 0 }; |
| |
| net_ipaddr_copy(&mcast_addr6.sin6_addr, &in6addr_mcast); |
| mcast_addr6.sin6_family = AF_INET6; |
| |
| my_addr6.sin6_family = AF_INET6; |
| my_addr6.sin6_port = htons(MY_PORT); |
| |
| ret = net_context_get(AF_INET6, SOCK_DGRAM, IPPROTO_UDP, udp_recv6); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot get network context for IPv6 UDP (%d)", |
| ret); |
| return false; |
| } |
| |
| ret = net_context_bind(*udp_recv6, (struct sockaddr *)&my_addr6, |
| sizeof(struct sockaddr_in6)); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot bind IPv6 UDP port %d (%d)", |
| ntohs(my_addr6.sin6_port), ret); |
| return false; |
| } |
| |
| ret = net_context_get(AF_INET6, SOCK_DGRAM, IPPROTO_UDP, mcast_recv6); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot get receiving IPv6 mcast network context" |
| "(%d)", ret); |
| return false; |
| } |
| |
| ret = net_context_bind(*mcast_recv6, (struct sockaddr *)&mcast_addr6, |
| sizeof(struct sockaddr_in6)); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot bind IPv6 mcast (%d)", ret); |
| return false; |
| } |
| |
| ret = net_context_get(AF_INET6, SOCK_STREAM, IPPROTO_TCP, tcp_recv6); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot get network context for IPv6 TCP (%d)", |
| ret); |
| return false; |
| } |
| |
| net_context_setup_pools(*tcp_recv6, tx_tcp_pool, data_tcp_pool); |
| |
| ret = net_context_bind(*tcp_recv6, (struct sockaddr *)&my_addr6, |
| sizeof(struct sockaddr_in6)); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot bind IPv6 TCP port %d (%d)", |
| ntohs(my_addr6.sin6_port), ret); |
| return false; |
| } |
| |
| ret = net_context_listen(*tcp_recv6, 0); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot listen IPv6 TCP (%d)", ret); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static struct net_pkt *build_reply_pkt(const char *name, |
| struct net_context *context, |
| struct net_pkt *pkt) |
| { |
| struct net_pkt *reply_pkt; |
| struct net_buf *tmp; |
| int header_len, recv_len, reply_len; |
| |
| SYS_LOG_DBG("%s received %d bytes", name, net_pkt_appdatalen(pkt)); |
| |
| reply_pkt = net_pkt_get_tx(context, K_FOREVER); |
| |
| recv_len = net_pkt_get_len(pkt); |
| |
| tmp = pkt->frags; |
| /* Remove frag link so original pkt can be unrefed */ |
| pkt->frags = NULL; |
| |
| /* First fragment will contain IP header so move the data |
| * down in order to get rid of it. |
| */ |
| header_len = net_pkt_appdata(pkt) - tmp->data; |
| |
| /* After this pull, the tmp->data points directly to application |
| * data. |
| */ |
| net_buf_pull(tmp, header_len); |
| |
| /* Add the entire chain into reply */ |
| net_pkt_frag_add(reply_pkt, tmp); |
| |
| reply_len = net_pkt_get_len(reply_pkt); |
| |
| SYS_LOG_DBG("Received %d bytes, sending %d bytes", |
| recv_len - header_len, reply_len); |
| |
| return reply_pkt; |
| } |
| |
| static inline void pkt_sent(struct net_context *context, |
| int status, |
| void *token, |
| void *user_data) |
| { |
| if (!status) { |
| SYS_LOG_DBG("Sent %d bytes", POINTER_TO_UINT(token)); |
| } |
| } |
| |
| static inline void set_dst_addr(sa_family_t family, |
| struct net_pkt *pkt, |
| struct sockaddr *dst_addr) |
| { |
| struct net_udp_hdr hdr, *udp_hdr; |
| |
| udp_hdr = net_udp_get_hdr(pkt, &hdr); |
| if (!udp_hdr) { |
| SYS_LOG_ERR("Invalid UDP data"); |
| return; |
| } |
| |
| net_ipaddr_copy(&net_sin6(dst_addr)->sin6_addr, |
| &NET_IPV6_HDR(pkt)->src); |
| net_sin6(dst_addr)->sin6_family = AF_INET6; |
| net_sin6(dst_addr)->sin6_port = udp_hdr->src_port; |
| } |
| |
| static void udp_received(struct net_context *context, |
| struct net_pkt *pkt, |
| int status, |
| void *user_data) |
| { |
| struct net_pkt *reply_pkt; |
| struct sockaddr dst_addr; |
| sa_family_t family = net_pkt_family(pkt); |
| static char dbg[MAX_DBG_PRINT + 1]; |
| int ret; |
| |
| snprintf(dbg, MAX_DBG_PRINT, "UDP IPv%c", |
| family == AF_INET6 ? '6' : '4'); |
| |
| set_dst_addr(family, pkt, &dst_addr); |
| |
| reply_pkt = build_reply_pkt(dbg, context, pkt); |
| |
| net_pkt_unref(pkt); |
| |
| ret = net_context_sendto(reply_pkt, &dst_addr, |
| family == AF_INET6 ? |
| sizeof(struct sockaddr_in6) : |
| sizeof(struct sockaddr_in), |
| pkt_sent, 0, |
| UINT_TO_POINTER(net_pkt_get_len(reply_pkt)), |
| user_data); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot send data to peer (%d)", ret); |
| net_pkt_unref(reply_pkt); |
| } |
| } |
| |
| static void setup_udp_recv(struct net_context *udp_recv6) |
| { |
| int ret; |
| |
| ret = net_context_recv(udp_recv6, udp_received, 0, NULL); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot receive IPv6 UDP packets"); |
| } |
| } |
| |
| static void tcp_received(struct net_context *context, |
| struct net_pkt *pkt, |
| int status, |
| void *user_data) |
| { |
| static char dbg[MAX_DBG_PRINT + 1]; |
| sa_family_t family; |
| struct net_pkt *reply_pkt; |
| int ret; |
| |
| if (!pkt) { |
| /* EOF condition */ |
| return; |
| } |
| |
| family = net_pkt_family(pkt); |
| |
| snprintf(dbg, MAX_DBG_PRINT, "TCP IPv%c", |
| family == AF_INET6 ? '6' : '4'); |
| |
| reply_pkt = build_reply_pkt(dbg, context, pkt); |
| |
| net_pkt_unref(pkt); |
| |
| ret = net_context_send(reply_pkt, pkt_sent, K_NO_WAIT, |
| UINT_TO_POINTER(net_pkt_get_len(reply_pkt)), |
| NULL); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot send data to peer (%d)", ret); |
| net_pkt_unref(reply_pkt); |
| |
| quit(); |
| } |
| } |
| |
| static void tcp_accepted(struct net_context *context, |
| struct sockaddr *addr, |
| socklen_t addrlen, |
| int error, |
| void *user_data) |
| { |
| int ret; |
| |
| NET_DBG("Accept called, context %p error %d", context, error); |
| |
| ret = net_context_recv(context, tcp_received, 0, NULL); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot receive TCP packet (family %d)", |
| net_context_get_family(context)); |
| } |
| } |
| |
| static void setup_tcp_accept(struct net_context *tcp_recv6) |
| { |
| int ret; |
| |
| ret = net_context_accept(tcp_recv6, tcp_accepted, K_NO_WAIT, NULL); |
| if (ret < 0) { |
| SYS_LOG_ERR("Cannot receive IPv6 TCP packets (%d)", ret); |
| } |
| } |
| |
| static void listen(void) |
| { |
| struct net_context *udp_recv6 = { 0 }; |
| struct net_context *tcp_recv6 = { 0 }; |
| struct net_context *mcast_recv6 = { 0 }; |
| |
| if (!get_context(&udp_recv6, &tcp_recv6, &mcast_recv6)) { |
| SYS_LOG_ERR("Cannot get network contexts"); |
| return; |
| } |
| |
| SYS_LOG_INF("Starting to wait"); |
| |
| setup_tcp_accept(tcp_recv6); |
| setup_udp_recv(udp_recv6); |
| |
| k_sem_take(&quit_lock, K_FOREVER); |
| |
| SYS_LOG_INF("Stopping..."); |
| |
| net_context_put(udp_recv6); |
| net_context_put(mcast_recv6); |
| net_context_put(tcp_recv6); |
| } |
| |
| void main(void) |
| { |
| init_app(); |
| |
| k_thread_create(&thread_data, thread_stack, STACKSIZE, |
| (k_thread_entry_t)listen, |
| NULL, NULL, NULL, K_PRIO_COOP(7), 0, 0); |
| } |