d_udp_lite.h File Reference

ROHC decompression context for the UDP-Lite profile. More...

#include <netinet/ip.h>
#include <netinet/udp.h>
#include "d_generic.h"
#include "d_udp.h"
#include "udp_lite.h"

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Data Structures
struct	d_udp_lite_context
	Define the UDP-Lite part of the decompression profile context. More...
Functions
int	udp_lite_decode_dynamic_udp (struct d_generic_context *context, const unsigned char *packet, unsigned int length, unsigned char *dest)
	Decode the UDP-Lite dynamic part of the ROHC packet.
int	udp_lite_build_uncompressed_udp (struct d_generic_context *context, struct d_generic_changes *active, unsigned char *dest, int payload_size)
	Build an uncompressed UDP-Lite header.

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Detailed Description

ROHC decompression context for the UDP-Lite profile.

Author:

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

The hackers from ROHC for Linux

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Function Documentation

int udp_lite_build_uncompressed_udp	(	struct d_generic_context *	context,
		struct d_generic_changes *	active,
		unsigned char *	dest,
		int	payload_size
	)

Build an uncompressed UDP-Lite header.

Parameters:

context	The generic decompression context
active	The UDP-Lite header changes
dest	The buffer to store the UDP-Lite header (MUST be at least of sizeof(struct udphdr) length)
payload_size	The length of the UDP-Lite payload

Returns:

The length of the next header (ie. the UDP-Lite header), -1 in case of error

References d_udp_lite_context::cce_packet, d_udp_lite_context::cfi, d_udp_lite_context::cfp, d_generic_changes::next_header, rohc_debugf, and d_generic_context::specific.

Referenced by d_udp_lite_create().

int udp_lite_decode_dynamic_udp	(	struct d_generic_context *	context,
		const unsigned char *	packet,
		unsigned int	length,
		unsigned char *	dest
	)

Decode the UDP-Lite dynamic part of the ROHC packet.

Parameters:

context	The generic decompression context
packet	The ROHC packet to decode
length	The length of the ROHC packet
dest	The decoded UDP header

Returns:

The number of bytes read in the ROHC packet, -1 in case of failure

References d_udp_lite_context::cfi, d_udp_lite_context::cfp, GET_NEXT_16_BITS, ip_decode_dynamic_ip(), PACKET_IR, PACKET_IR_DYN, d_generic_context::packet_type, rohc_debugf, and d_generic_context::specific.

Referenced by d_udp_lite_create().