alexb/lib/lwip/contrib/src/core/ipv4/inet_chksum.c File Reference

Incluse internet checksum functions. More...

#include "lwip/opt.h"
#include "lwip/inet_chksum.h"
#include "lwip/def.h"
#include <stddef.h>
#include <string.h>

Defines
#define	LWIP_CHKSUM   lwip_standard_chksum
#define	LWIP_CHKSUM_ALGORITHM   2
Functions
u16_t	inet_chksum_pseudo (struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t proto, u16_t proto_len)
u16_t	inet_chksum_pseudo_partial (struct pbuf *p, ip_addr_t *src, ip_addr_t *dest, u8_t proto, u16_t proto_len, u16_t chksum_len)
u16_t	inet_chksum (void *dataptr, u16_t len)
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).

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Detailed Description

Incluse internet checksum functions.

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Define Documentation

#define LWIP_CHKSUM   lwip_standard_chksum

#define LWIP_CHKSUM_ALGORITHM   2

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Function Documentation

u16_t inet_chksum	(	void *	dataptr,
		u16_t	len
	)

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

u16_t inet_chksum_pseudo	(	struct pbuf *	p,
		ip_addr_t *	src,
		ip_addr_t *	dest,
		u8_t	proto,
		u16_t	proto_len
	)

u16_t inet_chksum_pseudo_partial	(	struct pbuf *	p,
		ip_addr_t *	src,
		ip_addr_t *	dest,
		u8_t	proto,
		u16_t	proto_len,
		u16_t	chksum_len
	)