#include "lwip/opt.h"#include "lwip/inet_chksum.h"#include "lwip/def.h"#include "lwip/ip_addr.h"#include <string.h>
Include dependency graph for inet_chksum.c:
Go to the source code of this file.
Macros | |
| #define | LWIP_CHKSUM lwip_standard_chksum |
| #define | LWIP_CHKSUM_ALGORITHM 2 |
Functions | |
| u16_t | lwip_standard_chksum (const void *dataptr, int len) |
| 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) |
| u16_t | inet_chksum (const void *dataptr, u16_t len) |
| u16_t | inet_chksum_pbuf (struct pbuf *p) |
Detailed Description
Incluse internet checksum functions.
These are some reference implementations of the checksum algorithm, with the aim of being simple, correct and fully portable. Checksumming is the first thing you would want to optimize for your platform. If you create your own version, link it in and in your cc.h put:
#define LWIP_CHKSUM your_checksum_routine
Or you can select from the implementations below by defining LWIP_CHKSUM_ALGORITHM to 1, 2 or 3.
Definition in file inet_chksum.c.
Function Documentation
| u16_t inet_chksum_pbuf | ( | struct pbuf * | p | ) |
Calculate a checksum over a chain of pbufs (without pseudo-header, much like inet_chksum only pbufs are used).
- Parameters
-
p pbuf chain over that the checksum should be calculated
- Returns
- checksum (as u16_t) to be saved directly in the protocol header
Definition at line 587 of file inet_chksum.c.
References FOLD_U32T, pbuf::len, pbuf::next, pbuf::payload, and SWAP_BYTES_IN_WORD.
