c_tcp_static.c File Reference

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

#include "c_tcp_static.h"
#include "c_tcp_defines.h"
#include "protocols/ip_numbers.h"
#include "protocols/ip.h"
#include <assert.h>

Include dependency graph for c_tcp_static.c:

Functions
static int	tcp_code_static_ipv4_part (const struct rohc_comp_ctxt *const context, const struct ipv4_hdr *const ipv4, uint8_t *const rohc_data, const size_t rohc_max_len)
	Build the static part of the IPv4 header. More...
static int	tcp_code_static_ipv6_part (const struct rohc_comp_ctxt *const context, const struct ipv6_hdr *const ipv6, uint8_t *const rohc_data, const size_t rohc_max_len)
	Build the static part of the IPv6 header. More...
static int	tcp_code_static_ipv6_opt_part (const struct rohc_comp_ctxt *const context, const struct rohc_pkt_ip_ext_hdr *const ext, uint8_t *const rohc_data, const size_t rohc_max_len)
	Build the static part of the IPv6 option header. More...
static int	tcp_code_static_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 static part of the TCP header. More...
int	tcp_code_static_part (struct rohc_comp_ctxt *const context, const struct rohc_pkt_hdrs *const uncomp_pkt_hdrs, uint8_t *const rohc_pkt, const size_t rohc_pkt_max_len)
	Code the static part of an IR packet. More...

Detailed Description

Handle the static chain of the TCP compression profile.

Author

FWX rohc_.nosp@m.team.nosp@m.@dial.nosp@m.ine..nosp@m.fr

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

Didier Barvaux didie.nosp@m.r.ba.nosp@m.rvaux.nosp@m.@tou.nosp@m.louse.nosp@m..viv.nosp@m.eris..nosp@m.com

Function Documentation

tcp_code_static_ipv4_part()

static int tcp_code_static_ipv4_part ( const struct rohc_comp_ctxt *const  context, const struct ipv4_hdr *const  ipv4, uint8_t *const  rohc_data, const size_t  rohc_max_len  )

static

Build the static part of the IPv4 header.

Parameters

	context	The compression context
	ipv4	The IPv4 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_static_ipv6_opt_part()

static int tcp_code_static_ipv6_opt_part ( const struct rohc_comp_ctxt *const  context, const struct rohc_pkt_ip_ext_hdr *const  ext, uint8_t *const  rohc_data, const size_t  rohc_max_len  )

static

Build the static part of the IPv6 option header.

Parameters

	context	The compression context
	ext	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_static_ipv6_part()

static int tcp_code_static_ipv6_part ( const struct rohc_comp_ctxt *const  context, const struct ipv6_hdr *const  ipv6, uint8_t *const  rohc_data, const size_t  rohc_max_len  )

static

Build the static part of the IPv6 header.

Parameters

	context	The 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_static_part()

int tcp_code_static_part	(	struct rohc_comp_ctxt *const	context,
		const struct rohc_pkt_hdrs *const	uncomp_pkt_hdrs,
		uint8_t *const	rohc_pkt,
		const size_t	rohc_pkt_max_len
	)

Code the static part of an IR packet.

Parameters

context	The compression context
uncomp_pkt_hdrs	The uncompressed headers to encode
rohc_pkt	OUT: The ROHC packet
rohc_pkt_max_len	The maximum length of the ROHC packet

Returns

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

tcp_code_static_tcp_part()

static int tcp_code_static_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 static part of the TCP header.

 Static part of TCP header:

    +---+---+---+---+---+---+---+---+
 1  /  Source port                  /   2 octets
    +---+---+---+---+---+---+---+---+
 2  /  Destination port             /   2 octets
    +---+---+---+---+---+---+---+---+

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