epan/dissectors/packet-gre.h

   1 /* packet-gre.h
   2  * Routines and data exported by the dissection code for the
   3  * Generic Routing Encapsulation (GRE) protocol
   4  *
   5  * Wireshark - Network traffic analyzer
   6  * By Gerald Combs <gerald@wireshark.org>
   7  * Copyright 1998 Gerald Combs
   8  *
   9  * SPDX-License-Identifier: GPL-2.0-or-later
  10  */
  11
  12 /* bit positions for flags in header */
  13 #define GRE_CHECKSUM            0x8000
  14 #define GRE_ROUTING             0x4000
  15 #define GRE_KEY                 0x2000
  16 #define GRE_SEQUENCE            0x1000
  17 #define GRE_STRICTSOURCE        0x0800
  18 #define GRE_RECURSION           0x0700
  19 #define GRE_ACK                 0x0080  /* only in special PPTPized GRE header */
  20 #define GRE_RESERVED_PPP        0x0078  /* only in special PPTPized GRE header */
  21 #define GRE_RESERVED            0x00F8
  22 #define GRE_VERSION             0x0007
  23
  24 /* GRE type values that aren't also Ethernet type values */
  25 #define GRE_KEEPALIVE           0x0000
  26 #define GRE_CISCO_CDP           0x2000
  27 #define GRE_NHRP                0x2001
  28 #define GRE_WCCP                0x883E
  29 #define GRE_ERSPAN_88BE         0x88BE
  30 #define GRE_ERSPAN_22EB         0x22EB
  31 #define GRE_MIKROTIK_EOIP       0x6400
  32 #define GRE_AIROHIVE            0xFEAE
  33 #define GRE_GREBONDING          0xB7EA
  34 /* ************************************************************************* */
  35 /*              Aruba GRE Encapsulation ID                                   */
  36 /* ************************************************************************* */
  37 #define GRE_ARUBA_8200          0x8200
  38 #define GRE_ARUBA_8210          0x8210
  39 #define GRE_ARUBA_8220          0x8220
  40 #define GRE_ARUBA_8230          0x8230
  41 #define GRE_ARUBA_8240          0x8240
  42 #define GRE_ARUBA_8250          0x8250
  43 #define GRE_ARUBA_8260          0x8260
  44 #define GRE_ARUBA_8270          0x8270
  45 #define GRE_ARUBA_8280          0x8280
  46 #define GRE_ARUBA_8290          0x8290
  47 #define GRE_ARUBA_82A0          0x82A0
  48 #define GRE_ARUBA_82B0          0x82B0
  49 #define GRE_ARUBA_82C0          0x82C0
  50 #define GRE_ARUBA_82D0          0x82D0
  51 #define GRE_ARUBA_82E0          0x82E0
  52 #define GRE_ARUBA_82F0          0x82F0
  53 #define GRE_ARUBA_8300          0x8300
  54 #define GRE_ARUBA_8310          0x8310
  55 #define GRE_ARUBA_8320          0x8320
  56 #define GRE_ARUBA_8330          0x8330
  57 #define GRE_ARUBA_8340          0x8340
  58 #define GRE_ARUBA_8350          0x8350
  59 #define GRE_ARUBA_8360          0x8360
  60 #define GRE_ARUBA_8370          0x8370
  61 #define GRE_ARUBA_9000          0x9000
  62
  63 extern const value_string gre_typevals[];
  64
  65 typedef struct gre_hdr_info {
  66         uint16_t                flags_and_ver;
  67         uint32_t                key;
  68 } gre_hdr_info_t;