epan/dissectors/packet-rohc.h

   1 /* packet-rohc.h
   2  * Routines for RObust Header Compression (ROHC) dissection.
   3  *
   4  * Copyright 2011, Anders Broman <anders.broman[at]ericsson.com>
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * SPDX-License-Identifier: GPL-2.0-or-later
  11  *
  12  * Ref:
  13  * http://www.ietf.org/rfc/rfc3095.txt         RObust Header Compression (ROHC): Framework and four profiles: RTP, UDP, ESP, and uncompressed
  14  * http://datatracker.ietf.org/doc/rfc4815/    RObust Header Compression (ROHC): Corrections and Clarifications to RFC 3095
  15  * http://datatracker.ietf.org/doc/rfc5225/    RObust Header Compression Version 2 (ROHCv2): Profiles for RTP, UDP, IP, ESP and UDP-Lite
  16  */
  17
  18 #ifndef PACKET_ROHC_H
  19 #define PACKET_ROHC_H
  20
  21 #define MAX_CID      15
  22
  23  /* ROHC Profiles */
  24 #define ROHC_PROFILE_UNCOMPRESSED   0
  25 #define ROHC_PROFILE_RTP            1
  26 #define ROHC_PROFILE_UDP            2
  27 #define ROHC_PROFILE_IP             4
  28 #define ROHC_PROFILE_UNKNOWN        0xFFFF
  29
  30 enum rohc_mode
  31 {
  32   MODE_NOT_SET = 0,
  33   UNIDIRECTIONAL = 1,
  34   OPTIMISTIC_BIDIRECTIONAL = 2,
  35   RELIABLE_BIDIRECTIONAL = 3
  36 };
  37
  38
  39 typedef struct rohc_info
  40 {
  41     bool               rohc_compression;
  42     uint8_t            rohc_ip_version;
  43     bool               cid_inclusion_info;
  44     bool               large_cid_present;
  45     enum rohc_mode     mode;
  46     bool               rnd;
  47     bool               udp_checksum_present;
  48     uint16_t           profile;
  49     proto_item         *last_created_item;
  50 } rohc_info;
  51
  52 #endif /* PACKET_ROHC_H */