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 rohc_ip_id_behavior_t ip_id_behavior, const bool ttl_changed, 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 rohc_pkt_ip_ext_hdr *const ext, 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 rohc_pkt_hdrs *const uncomp_pkt_hdrs, struct tcp_tmp_variables *const tmp, 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 rohc_pkt_hdrs *const uncomp_pkt_hdrs, struct tcp_tmp_variables *const tmp, uint8_t *const rohc_pkt, const size_t rohc_pkt_max_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 rohc_pkt_hdrs *const	uncomp_pkt_hdrs,
		struct tcp_tmp_variables *const	tmp,
		uint8_t *const	rohc_pkt,
		const size_t	rohc_pkt_max_len
	)

Code the replicate chain of an IR packet.

Parameters

	context	The compression context
	uncomp_pkt_hdrs	The uncompressed headers to encode
	tmp	The temporary state for the compressed packet
[out]	rohc_pkt	The ROHC packet being built
	rohc_pkt_max_len	The maximum length of the ROHC packet

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 rohc_ip_id_behavior_t  ip_id_behavior, const bool  ttl_changed, 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
	ip_id_behavior	The IP-ID behavior of the IPv4 header
	ttl_changed	Whether the IP TTL changed
[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 rohc_pkt_ip_ext_hdr *const  ext, 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
	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_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 rohc_pkt_hdrs *const  uncomp_pkt_hdrs, struct tcp_tmp_variables *const  tmp, 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
	uncomp_pkt_hdrs	The uncompressed headers to encode
	tmp	The temporary state for the compressed packet
[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