d_udp.h File Reference

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

#include "d_generic.h"
#include "d_ip.h"
#include <string.h>

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Data Structures
struct	d_udp_context
	Define the UDP part of the decompression profile context. More...
Functions
int	udp_parse_static_udp (struct d_generic_context *context, const unsigned char *packet, unsigned int length, struct rohc_extr_bits *const bits)
	Parse the UDP static part of the ROHC packet.
void	udp_update_context (const struct d_context *context, const struct rohc_decoded_values decoded)
	Update context with decoded UDP values.

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Detailed Description

ROHC decompression context for the UDP profile.

Author:

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

Didier Barvaux <didier@barvaux.org>

The hackers from ROHC for Linux

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Function Documentation

int udp_parse_static_udp	(	struct d_generic_context *	context,
		const unsigned char *	packet,
		unsigned int	length,
		struct rohc_extr_bits *const	bits
	)

Parse the UDP static part of the ROHC packet.

Parameters:

context	The generic decompression context
packet	The ROHC packet to parse
length	The length of the ROHC packet
bits	OUT: The bits extracted from the ROHC header

Returns:

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

References GET_NEXT_16_BITS, rohc_debugf, rohc_extr_bits::udp_dst, rohc_extr_bits::udp_dst_nr, rohc_extr_bits::udp_src, and rohc_extr_bits::udp_src_nr.

Referenced by d_udp_create(), and d_udp_lite_create().

void udp_update_context	(	const struct d_context *	context,
		const struct rohc_decoded_values	decoded
	)

Update context with decoded UDP values.

The following decoded values are updated in context:

• UDP source port
• UDP destination port

Parameters:

context	The decompression context
decoded	The decoded values to update in the context

References udphdr::dest, d_generic_changes::next_header, d_generic_context::outer_ip_changes, udphdr::source, d_context::specific, rohc_decoded_values::udp_dst, and rohc_decoded_values::udp_src.

Referenced by d_udp_create(), and d_udp_lite_create().