2 * Definitions for IP packet disassembly structures and routines
4 * $Id: packet-ip.h,v 1.10 2000/01/20 21:34:15 guy Exp $
6 * Ethereal - Network traffic analyzer
7 * By Gerald Combs <gerald@zing.org>
8 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #ifndef __PACKET_IP_H__
28 #define __PACKET_IP_H__
30 #define IP_PROTO_IP 0 /* dummy for IP */
31 #define IP_PROTO_HOPOPTS 0 /* IP6 hop-by-hop options */
32 #define IP_PROTO_ICMP 1 /* control message protocol */
33 #define IP_PROTO_IGMP 2 /* group mgmt protocol */
34 #define IP_PROTO_GGP 3 /* gateway^2 (deprecated) */
35 #define IP_PROTO_IPIP 4 /* IP inside IP */
36 #define IP_PROTO_IPV4 4 /* IP header */
37 #define IP_PROTO_TCP 6 /* tcp */
38 #define IP_PROTO_EGP 8 /* exterior gateway protocol */
39 #define IP_PROTO_PUP 12 /* pup */
40 #define IP_PROTO_UDP 17 /* user datagram protocol */
41 #define IP_PROTO_IDP 22 /* xns idp */
42 #define IP_PROTO_TP 29 /* tp-4 w/ class negotiation */
43 #define IP_PROTO_IPV6 41 /* IP6 header */
44 #define IP_PROTO_ROUTING 43 /* IP6 routing header */
45 #define IP_PROTO_FRAGMENT 44 /* IP6 fragmentation header */
46 #define IP_PROTO_RSVP 46 /* Resource ReSerVation protocol */
47 #define IP_PROTO_GRE 47 /* GRE */
48 #define IP_PROTO_ESP 50 /* ESP */
49 #define IP_PROTO_AH 51 /* AH */
50 #define IP_PROTO_ICMPV6 58 /* ICMP6 */
51 #define IP_PROTO_NONE 59 /* IP6 no next header */
52 #define IP_PROTO_DSTOPTS 60 /* IP6 no next header */
53 #define IP_PROTO_EON 80 /* ISO cnlp */
54 #define IP_PROTO_VINES 83 /* Vines over raw IP */
55 #define IP_PROTO_EIGRP 88
56 #define IP_PROTO_OSPF 89
57 #define IP_PROTO_ENCAP 98 /* encapsulation header */
58 #define IP_PROTO_PIM 103 /* Protocol Independent Mcast */
59 #define IP_PROTO_IPCOMP 108 /* IP payload compression */
60 #define IP_PROTO_VRRP 112 /* Virtual Router Redundancy Protocol */
63 NO_LENGTH, /* option has no data, hence no length */
64 FIXED_LENGTH, /* option always has the same length */
65 VARIABLE_LENGTH /* option is variable-length - optlen is minimum */
68 /* Member of table of IP or TCP options. */
69 typedef struct ip_tcp_opt {
70 int optcode; /* code for option */
71 char *name; /* name of option */
72 int *subtree_index; /* pointer to subtree index for option */
73 opt_len_type len_type; /* type of option length field */
74 int optlen; /* value length should be (minimum if VARIABLE) */
75 void (*dissect)(const struct ip_tcp_opt *, const u_char *, int, guint, proto_tree *);
76 /* routine to dissect option */
79 /* Routine to dissect IP or TCP options. */
80 void dissect_ip_tcp_options(const u_char *, int, guint,
81 const ip_tcp_opt *, int, int, proto_tree *);