rohc_comp_profile Struct Reference

The ROHC compression profile. More...

#include <rohc_comp_internals.h>

Data Fields
const rohc_profile_t	id
const unsigned short	protocol
	The IP protocol ID used to find out which profile is able to compress an IP packet.
bool(*	create )(struct rohc_comp_ctxt *const context, const struct net_pkt *const packet)
	The handler used to create the profile-specific part of the compression context.
void(*	destroy )(struct rohc_comp_ctxt *const context)
	The handler used to destroy the profile-specific part of the compression context.
bool(*	check_profile )(const struct rohc_comp *const comp, const struct net_pkt *const packet)
	The handler used to check whether an uncompressed IP packet fits the current profile or not.
bool(*	check_context )(const struct rohc_comp_ctxt *const context, const struct net_pkt *const packet)
	The handler used to check whether an uncompressed IP packet belongs to a context or not.
int(*	encode )(struct rohc_comp_ctxt *const context, const struct net_pkt *const uncomp_pkt, uint8_t *const rohc_pkt, const size_t rohc_pkt_max_len, rohc_packet_t *const packet_type, size_t *const payload_offset)
	The handler used to encode uncompressed IP packets.
bool(*	reinit_context )(struct rohc_comp_ctxt *const context)
	The handler used to re-initialize a context.
bool(*	feedback )(struct rohc_comp_ctxt *const context, const enum rohc_feedback_type feedback_type, const uint8_t *const packet, const size_t packet_len, const uint8_t *const feedback_data, const size_t feedback_data_len)
	The handler used to warn the profile-specific part of the context about the arrival of feedback data.

---

Detailed Description

The ROHC compression profile.

The object defines a ROHC profile. Each field must be filled in for each new profile.

---

Field Documentation

bool(* rohc_comp_profile::check_context)(const struct rohc_comp_ctxt *const context, const struct net_pkt *const packet)

The handler used to check whether an uncompressed IP packet belongs to a context or not.

bool(* rohc_comp_profile::check_profile)(const struct rohc_comp *const comp, const struct net_pkt *const packet)

The handler used to check whether an uncompressed IP packet fits the current profile or not.

bool(* rohc_comp_profile::create)(struct rohc_comp_ctxt *const context, const struct net_pkt *const packet)

The handler used to create the profile-specific part of the compression context.

void(* rohc_comp_profile::destroy)(struct rohc_comp_ctxt *const context)

The handler used to destroy the profile-specific part of the compression context.

int(* rohc_comp_profile::encode)(struct rohc_comp_ctxt *const context, const struct net_pkt *const uncomp_pkt, uint8_t *const rohc_pkt, const size_t rohc_pkt_max_len, rohc_packet_t *const packet_type, size_t *const payload_offset)

The handler used to encode uncompressed IP packets.

Parameters:

	context	The compression context
	ip	The IP packet to encode
	packet_size	The length of the IP packet to encode
	rohc_pkt	OUT: The ROHC packet
	rohc_pkt_max_len	The maximum length of the ROHC packet
	packet_type	OUT: The type of ROHC packet that is created
	payload_offset	OUT: The offset for the payload in the IP packet

Returns:

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

bool(* rohc_comp_profile::feedback)(struct rohc_comp_ctxt *const context, const enum rohc_feedback_type feedback_type, const uint8_t *const packet, const size_t packet_len, const uint8_t *const feedback_data, const size_t feedback_data_len)

The handler used to warn the profile-specific part of the context about the arrival of feedback data.

const rohc_profile_t rohc_comp_profile::id

The profile ID as reserved by IANA

const unsigned short rohc_comp_profile::protocol

The IP protocol ID used to find out which profile is able to compress an IP packet.

bool(* rohc_comp_profile::reinit_context)(struct rohc_comp_ctxt *const context)

The handler used to re-initialize a context.

---

The documentation for this struct was generated from the following file:

• rohc_comp_internals.h