crc.h File Reference

ROHC CRC routines. More...

#include "ip.h"
#include <stdbool.h>

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Defines
#define	CRC_INIT_2   0x3
	The CRC-2 initial value.
#define	CRC_INIT_3   0x7
	The CRC-3 initial value.
#define	CRC_INIT_6   0x3f
	The CRC-6 initial value.
#define	CRC_INIT_7   0x7f
	The CRC-7 initial value.
#define	CRC_INIT_8   0xff
	The CRC-8 initial value.
Functions
bool	rohc_crc_init_table (unsigned char *const table, const int crc_type) __attribute__((nonnull(1)
unsigned int	crc_calculate (const int crc_type, const unsigned char *const data, const int length, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(2
unsigned int unsigned int	compute_crc_static (const unsigned char *const ip, const unsigned char *const ip2, const unsigned char *const next_header, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
unsigned int unsigned int unsigned int	compute_crc_dynamic (const unsigned char *const ip, const unsigned char *const ip2, const unsigned char *const next_header, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
unsigned int unsigned int unsigned int unsigned int	udp_compute_crc_static (const unsigned char *const ip, const unsigned char *const ip2, const unsigned char *const next_header, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
unsigned int unsigned int unsigned int unsigned int unsigned int	udp_compute_crc_dynamic (const unsigned char *const ip, const unsigned char *const ip2, const unsigned char *const next_header, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int	rtp_compute_crc_static (const unsigned char *const ip, const unsigned char *const ip2, const unsigned char *const next_header, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int	rtp_compute_crc_dynamic (const unsigned char *const ip, const unsigned char *const ip2, const unsigned char *const next_header, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int	ipv6_ext_compute_crc_static (const unsigned char *const ip, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int	ipv6_ext_compute_crc_dynamic (const unsigned char *const ip, const unsigned int crc_type, const unsigned int init_val, const unsigned char *const crc_table) __attribute__((nonnull(1
Variables
bool	warn_unused_result

---

Detailed Description

ROHC CRC routines.

Author:

Didier Barvaux <didier.barvaux@toulouse.viveris.com>

The hackers from ROHC for Linux

Didier Barvaux <didier@barvaux.org>

---

Define Documentation

#define CRC_INIT_2   0x3

The CRC-2 initial value.

#define CRC_INIT_3   0x7

The CRC-3 initial value.

Referenced by code_UO0_packet(), code_UO1_packet(), decode_uo0(), and decode_uo1().

#define CRC_INIT_6   0x3f

The CRC-6 initial value.

Referenced by code_UO2_packet(), and decode_uor2().

#define CRC_INIT_7   0x7f

The CRC-7 initial value.

Referenced by code_UO2_packet(), and decode_uor2().

#define CRC_INIT_8   0xff

The CRC-8 initial value.

Referenced by c_generic_feedback(), code_IR_DYN_packet(), code_IR_packet(), and f_wrap_feedback().

---

Function Documentation

unsigned int unsigned int unsigned int compute_crc_dynamic	(	const unsigned char *const	ip,
		const unsigned char *const	ip2,
		const unsigned char *const	next_header,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

unsigned int unsigned int compute_crc_static	(	const unsigned char *const	ip,
		const unsigned char *const	ip2,
		const unsigned char *const	next_header,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

unsigned int crc_calculate	(	const int	crc_type,
		const unsigned char *const	data,
		const int	length,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int ipv6_ext_compute_crc_dynamic	(	const unsigned char *const	ip,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int ipv6_ext_compute_crc_static	(	const unsigned char *const	ip,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

bool rohc_crc_init_table	(	unsigned char *const	table,
		const int	crc_type
	)

unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int rtp_compute_crc_dynamic	(	const unsigned char *const	ip,
		const unsigned char *const	ip2,
		const unsigned char *const	next_header,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

unsigned int unsigned int unsigned int unsigned int unsigned int unsigned int rtp_compute_crc_static	(	const unsigned char *const	ip,
		const unsigned char *const	ip2,
		const unsigned char *const	next_header,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

unsigned int unsigned int unsigned int unsigned int unsigned int udp_compute_crc_dynamic	(	const unsigned char *const	ip,
		const unsigned char *const	ip2,
		const unsigned char *const	next_header,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

unsigned int unsigned int unsigned int unsigned int udp_compute_crc_static	(	const unsigned char *const	ip,
		const unsigned char *const	ip2,
		const unsigned char *const	next_header,
		const unsigned int	crc_type,
		const unsigned int	init_val,
		const unsigned char *const	crc_table
	)

---

Variable Documentation

bool warn_unused_result