blob: 8937a6361564c298c68e40ecec51b2153bb062e2 [file] [log] [blame]
/* buf_simple.c - Simple network buffer management */
/*
* Copyright (c) 2015-2019 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(net_buf_simple, CONFIG_NET_BUF_LOG_LEVEL);
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/net/buf.h>
#if defined(CONFIG_NET_BUF_SIMPLE_LOG)
#define NET_BUF_SIMPLE_DBG(fmt, ...) LOG_DBG("(%p) " fmt, k_current_get(), \
##__VA_ARGS__)
#define NET_BUF_SIMPLE_ERR(fmt, ...) LOG_ERR(fmt, ##__VA_ARGS__)
#define NET_BUF_SIMPLE_WARN(fmt, ...) LOG_WRN(fmt, ##__VA_ARGS__)
#define NET_BUF_SIMPLE_INFO(fmt, ...) LOG_INF(fmt, ##__VA_ARGS__)
#else
#define NET_BUF_SIMPLE_DBG(fmt, ...)
#define NET_BUF_SIMPLE_ERR(fmt, ...)
#define NET_BUF_SIMPLE_WARN(fmt, ...)
#define NET_BUF_SIMPLE_INFO(fmt, ...)
#endif /* CONFIG_NET_BUF_SIMPLE_LOG */
void net_buf_simple_init_with_data(struct net_buf_simple *buf,
void *data, size_t size)
{
buf->__buf = data;
buf->data = data;
buf->size = size;
buf->len = size;
}
void net_buf_simple_reserve(struct net_buf_simple *buf, size_t reserve)
{
__ASSERT_NO_MSG(buf);
__ASSERT_NO_MSG(buf->len == 0U);
NET_BUF_SIMPLE_DBG("buf %p reserve %zu", buf, reserve);
buf->data = buf->__buf + reserve;
}
void net_buf_simple_clone(const struct net_buf_simple *original,
struct net_buf_simple *clone)
{
memcpy(clone, original, sizeof(struct net_buf_simple));
}
void *net_buf_simple_add(struct net_buf_simple *buf, size_t len)
{
uint8_t *tail = net_buf_simple_tail(buf);
NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
__ASSERT_NO_MSG(net_buf_simple_tailroom(buf) >= len);
buf->len += len;
return tail;
}
void *net_buf_simple_add_mem(struct net_buf_simple *buf, const void *mem,
size_t len)
{
NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
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)
{
uint8_t *u8;
NET_BUF_SIMPLE_DBG("buf %p val 0x%02x", buf, val);
u8 = net_buf_simple_add(buf, 1);
*u8 = val;
return u8;
}
void net_buf_simple_add_le16(struct net_buf_simple *buf, uint16_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_le16(val, net_buf_simple_add(buf, sizeof(val)));
}
void net_buf_simple_add_be16(struct net_buf_simple *buf, uint16_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_be16(val, net_buf_simple_add(buf, sizeof(val)));
}
void net_buf_simple_add_le24(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_le24(val, net_buf_simple_add(buf, 3));
}
void net_buf_simple_add_be24(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_be24(val, net_buf_simple_add(buf, 3));
}
void net_buf_simple_add_le32(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_le32(val, net_buf_simple_add(buf, sizeof(val)));
}
void net_buf_simple_add_be32(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_be32(val, net_buf_simple_add(buf, sizeof(val)));
}
void net_buf_simple_add_le48(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_le48(val, net_buf_simple_add(buf, 6));
}
void net_buf_simple_add_be48(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_be48(val, net_buf_simple_add(buf, 6));
}
void net_buf_simple_add_le64(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_le64(val, net_buf_simple_add(buf, sizeof(val)));
}
void net_buf_simple_add_be64(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_be64(val, net_buf_simple_add(buf, sizeof(val)));
}
void *net_buf_simple_remove_mem(struct net_buf_simple *buf, size_t len)
{
NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
__ASSERT_NO_MSG(buf->len >= len);
buf->len -= len;
return buf->data + buf->len;
}
uint8_t net_buf_simple_remove_u8(struct net_buf_simple *buf)
{
uint8_t val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = *(uint8_t *)ptr;
return val;
}
uint16_t net_buf_simple_remove_le16(struct net_buf_simple *buf)
{
uint16_t val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((uint16_t *)ptr);
return sys_le16_to_cpu(val);
}
uint16_t net_buf_simple_remove_be16(struct net_buf_simple *buf)
{
uint16_t val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((uint16_t *)ptr);
return sys_be16_to_cpu(val);
}
uint32_t net_buf_simple_remove_le24(struct net_buf_simple *buf)
{
struct uint24 {
uint32_t u24 : 24;
} __packed val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((struct uint24 *)ptr);
return sys_le24_to_cpu(val.u24);
}
uint32_t net_buf_simple_remove_be24(struct net_buf_simple *buf)
{
struct uint24 {
uint32_t u24 : 24;
} __packed val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((struct uint24 *)ptr);
return sys_be24_to_cpu(val.u24);
}
uint32_t net_buf_simple_remove_le32(struct net_buf_simple *buf)
{
uint32_t val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((uint32_t *)ptr);
return sys_le32_to_cpu(val);
}
uint32_t net_buf_simple_remove_be32(struct net_buf_simple *buf)
{
uint32_t val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((uint32_t *)ptr);
return sys_be32_to_cpu(val);
}
uint64_t net_buf_simple_remove_le48(struct net_buf_simple *buf)
{
struct uint48 {
uint64_t u48 : 48;
} __packed val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((struct uint48 *)ptr);
return sys_le48_to_cpu(val.u48);
}
uint64_t net_buf_simple_remove_be48(struct net_buf_simple *buf)
{
struct uint48 {
uint64_t u48 : 48;
} __packed val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((struct uint48 *)ptr);
return sys_be48_to_cpu(val.u48);
}
uint64_t net_buf_simple_remove_le64(struct net_buf_simple *buf)
{
uint64_t val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((uint64_t *)ptr);
return sys_le64_to_cpu(val);
}
uint64_t net_buf_simple_remove_be64(struct net_buf_simple *buf)
{
uint64_t val;
void *ptr;
ptr = net_buf_simple_remove_mem(buf, sizeof(val));
val = UNALIGNED_GET((uint64_t *)ptr);
return sys_be64_to_cpu(val);
}
void *net_buf_simple_push(struct net_buf_simple *buf, size_t len)
{
NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
__ASSERT_NO_MSG(net_buf_simple_headroom(buf) >= len);
buf->data -= len;
buf->len += len;
return buf->data;
}
void *net_buf_simple_push_mem(struct net_buf_simple *buf, const void *mem,
size_t len)
{
NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
return memcpy(net_buf_simple_push(buf, len), mem, len);
}
void net_buf_simple_push_le16(struct net_buf_simple *buf, uint16_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_le16(val, net_buf_simple_push(buf, sizeof(val)));
}
void net_buf_simple_push_be16(struct net_buf_simple *buf, uint16_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_be16(val, net_buf_simple_push(buf, sizeof(val)));
}
void net_buf_simple_push_u8(struct net_buf_simple *buf, uint8_t val)
{
uint8_t *data = net_buf_simple_push(buf, 1);
*data = val;
}
void net_buf_simple_push_le24(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_le24(val, net_buf_simple_push(buf, 3));
}
void net_buf_simple_push_be24(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_be24(val, net_buf_simple_push(buf, 3));
}
void net_buf_simple_push_le32(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_le32(val, net_buf_simple_push(buf, sizeof(val)));
}
void net_buf_simple_push_be32(struct net_buf_simple *buf, uint32_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %u", buf, val);
sys_put_be32(val, net_buf_simple_push(buf, sizeof(val)));
}
void net_buf_simple_push_le48(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_le48(val, net_buf_simple_push(buf, 6));
}
void net_buf_simple_push_be48(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_be48(val, net_buf_simple_push(buf, 6));
}
void net_buf_simple_push_le64(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_le64(val, net_buf_simple_push(buf, sizeof(val)));
}
void net_buf_simple_push_be64(struct net_buf_simple *buf, uint64_t val)
{
NET_BUF_SIMPLE_DBG("buf %p val %" PRIu64, buf, val);
sys_put_be64(val, net_buf_simple_push(buf, sizeof(val)));
}
void *net_buf_simple_pull(struct net_buf_simple *buf, size_t len)
{
NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
__ASSERT_NO_MSG(buf->len >= len);
buf->len -= len;
return buf->data += len;
}
void *net_buf_simple_pull_mem(struct net_buf_simple *buf, size_t len)
{
void *data = buf->data;
NET_BUF_SIMPLE_DBG("buf %p len %zu", buf, len);
__ASSERT_NO_MSG(buf->len >= len);
buf->len -= len;
buf->data += len;
return data;
}
uint8_t net_buf_simple_pull_u8(struct net_buf_simple *buf)
{
uint8_t val;
val = buf->data[0];
net_buf_simple_pull(buf, 1);
return val;
}
uint16_t net_buf_simple_pull_le16(struct net_buf_simple *buf)
{
uint16_t val;
val = UNALIGNED_GET((uint16_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)
{
uint16_t val;
val = UNALIGNED_GET((uint16_t *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_be16_to_cpu(val);
}
uint32_t net_buf_simple_pull_le24(struct net_buf_simple *buf)
{
struct uint24 {
uint32_t u24:24;
} __packed val;
val = UNALIGNED_GET((struct uint24 *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_le24_to_cpu(val.u24);
}
uint32_t net_buf_simple_pull_be24(struct net_buf_simple *buf)
{
struct uint24 {
uint32_t u24:24;
} __packed val;
val = UNALIGNED_GET((struct uint24 *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_be24_to_cpu(val.u24);
}
uint32_t net_buf_simple_pull_le32(struct net_buf_simple *buf)
{
uint32_t val;
val = UNALIGNED_GET((uint32_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)
{
uint32_t val;
val = UNALIGNED_GET((uint32_t *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_be32_to_cpu(val);
}
uint64_t net_buf_simple_pull_le48(struct net_buf_simple *buf)
{
struct uint48 {
uint64_t u48:48;
} __packed val;
val = UNALIGNED_GET((struct uint48 *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_le48_to_cpu(val.u48);
}
uint64_t net_buf_simple_pull_be48(struct net_buf_simple *buf)
{
struct uint48 {
uint64_t u48:48;
} __packed val;
val = UNALIGNED_GET((struct uint48 *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_be48_to_cpu(val.u48);
}
uint64_t net_buf_simple_pull_le64(struct net_buf_simple *buf)
{
uint64_t val;
val = UNALIGNED_GET((uint64_t *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_le64_to_cpu(val);
}
uint64_t net_buf_simple_pull_be64(struct net_buf_simple *buf)
{
uint64_t val;
val = UNALIGNED_GET((uint64_t *)buf->data);
net_buf_simple_pull(buf, sizeof(val));
return sys_be64_to_cpu(val);
}
size_t net_buf_simple_headroom(struct net_buf_simple *buf)
{
return buf->data - buf->__buf;
}
size_t net_buf_simple_tailroom(struct net_buf_simple *buf)
{
return buf->size - net_buf_simple_headroom(buf) - buf->len;
}
uint16_t net_buf_simple_max_len(struct net_buf_simple *buf)
{
return buf->size - net_buf_simple_headroom(buf);
}