TuyaOS
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宏定义 | |
#define | FOLD_U32T(u) ((u32_t)(((u) >> 16) + ((u) & 0x0000ffffUL))) |
#define | LWIP_CHKSUM_COPY_ALGORITHM 0 |
#define | SWAP_BYTES_IN_WORD(w) (((w) & 0xff) << 8) | (((w) & 0xff00) >> 8) |
函数 | |
u16_t | inet_chksum (const void *dataptr, u16_t len) |
u16_t | inet_chksum_pbuf (struct pbuf *p) |
u16_t | ip_chksum_pseudo (struct pbuf *p, u8_t proto, u16_t proto_len, const ip_addr_t *src, const ip_addr_t *dest) |
u16_t | ip_chksum_pseudo_partial (struct pbuf *p, u8_t proto, u16_t proto_len, u16_t chksum_len, const ip_addr_t *src, const ip_addr_t *dest) |
IP checksum calculation functions
#define FOLD_U32T | ( | u | ) | ((u32_t)(((u) >> 16) + ((u) & 0x0000ffffUL))) |
Split an u32_t in two u16_ts and add them up
#define SWAP_BYTES_IN_WORD | ( | w | ) | (((w) & 0xff) << 8) | (((w) & 0xff00) >> 8) |
Swap the bytes in an u16_t: much like lwip_htons() for little-endian