c_tcp_replicate.c File Reference

Handle the replicate chain of the TCP compression profile. More...

#include "c_tcp_replicate.h"
#include "c_tcp_defines.h"
#include "schemes/rfc4996.h"
#include "protocols/ip_numbers.h"
#include "protocols/ip.h"
#include <assert.h>

Include dependency graph for c_tcp_replicate.c:

Functions
static int	tcp_code_replicate_ipv4_part (const struct rohc_comp_ctxt *const context, ip_context_t *const ip_context, const struct ipv4_hdr *const ipv4, const bool is_innermost, uint8_t *const rohc_data, const size_t rohc_max_len)
	Build the replicate part of the IPv4 header. More...
static int	tcp_code_replicate_ipv6_part (const struct rohc_comp_ctxt *const context, ip_context_t *const ip_context, const struct ipv6_hdr *const ipv6, uint8_t *const rohc_data, const size_t rohc_max_len)
	Build the replicate part of the IPv6 header. More...
static int	tcp_code_replicate_ipv6_opt_part (const struct rohc_comp_ctxt *const context, const struct ipv6_opt *const ipv6_opt, const uint8_t protocol, uint8_t *const rohc_data, const size_t rohc_max_len)
	Build the replicate part of the IPv6 option header. More...
static int	tcp_code_replicate_tcp_part (const struct rohc_comp_ctxt *const context, const struct tcphdr *const tcp, uint8_t *const rohc_data, const size_t rohc_max_len)
	Build the replicate part of the TCP header. More...
int	tcp_code_replicate_chain (struct rohc_comp_ctxt *const context, const struct ip_packet *const ip, uint8_t *const rohc_pkt, const size_t rohc_pkt_max_len, size_t *const parsed_len)
	Code the replicate chain of an IR packet. More...

Detailed Description

Handle the replicate chain of the TCP compression profile.

Author

Didier Barvaux didie.nosp@m.r@ba.nosp@m.rvaux.nosp@m..org

Function Documentation

tcp_code_replicate_chain()

int tcp_code_replicate_chain	(	struct rohc_comp_ctxt *const	context,
		const struct ip_packet *const	ip,
		uint8_t *const	rohc_pkt,
		const size_t	rohc_pkt_max_len,
		size_t *const	parsed_len
	)

Code the replicate chain of an IR packet.

Parameters

	context	The compression context
	ip	The outer IP header
	rohc_pkt	OUT: The ROHC packet
	rohc_pkt_max_len	The maximum length of the ROHC packet
[out]	parsed_len	The length of uncompressed data parsed

Returns

The length of the ROHC packet if successful, -1 otherwise

tcp_code_replicate_ipv4_part()

static int tcp_code_replicate_ipv4_part ( const struct rohc_comp_ctxt *const  context, ip_context_t *const  ip_context, const struct ipv4_hdr *const  ipv4, const bool  is_innermost, uint8_t *const  rohc_data, const size_t  rohc_max_len  )

static

Build the replicate part of the IPv4 header.

Parameters

	context	The compression context
	ip_context	The specific IP compression context
	ipv4	The IPv4 header
	is_innermost	true if the IP header is the innermost of the packet, false otherwise
[out]	rohc_data	The ROHC packet being built
	rohc_max_len	The max remaining length in the ROHC buffer

Returns

The length appended in the ROHC buffer if positive, -1 in case of error

tcp_code_replicate_ipv6_opt_part()

static int tcp_code_replicate_ipv6_opt_part ( const struct rohc_comp_ctxt *const  context, const struct ipv6_opt *const  ipv6_opt, const uint8_t  protocol, uint8_t *const  rohc_data, const size_t  rohc_max_len  )

static

Build the replicate part of the IPv6 option header.

Parameters

	context	The compression context
	ipv6_opt	The IPv6 extension header
	protocol	The protocol of the IPv6 extension header
[out]	rohc_data	The ROHC packet being built
	rohc_max_len	The max remaining length in the ROHC buffer

Returns

The length appended in the ROHC buffer if positive, -1 in case of error

tcp_code_replicate_ipv6_part()

static int tcp_code_replicate_ipv6_part ( const struct rohc_comp_ctxt *const  context, ip_context_t *const  ip_context, const struct ipv6_hdr *const  ipv6, uint8_t *const  rohc_data, const size_t  rohc_max_len  )

static

Build the replicate part of the IPv6 header.

Parameters

	context	The compression context
	ip_context	The specific IP compression context
	ipv6	The IPv6 header
[out]	rohc_data	The ROHC packet being built
	rohc_max_len	The max remaining length in the ROHC buffer

Returns

The length appended in the ROHC buffer if positive, -1 in case of error

tcp_code_replicate_tcp_part()

static int tcp_code_replicate_tcp_part ( const struct rohc_comp_ctxt *const  context, const struct tcphdr *const  tcp, uint8_t *const  rohc_data, const size_t  rohc_max_len  )

static

Build the replicate part of the TCP header.

Parameters

	context	The compression context
	tcp	The TCP header
[out]	rohc_data	The ROHC packet being built
	rohc_max_len	The max remaining length in the ROHC buffer

Returns

The length appended in the ROHC buffer if positive, -1 in case of error