2 * Definitions for IP packet disassembly structures and routines
4 * $Id: packet-ip.h,v 1.23 2001/12/29 22:01:11 guy Exp $
6 * Ethereal - Network traffic analyzer
7 * By Gerald Combs <gerald@ethereal.com>
8 * Copyright 1998 Gerald Combs
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #ifndef __PACKET_IP_H__
27 #define __PACKET_IP_H__
29 void capture_ip(const u_char *, int, int, packet_counts *);
32 NO_LENGTH, /* option has no data, hence no length */
33 FIXED_LENGTH, /* option always has the same length */
34 VARIABLE_LENGTH /* option is variable-length - optlen is minimum */
37 /* Member of table of IP or TCP options. */
38 typedef struct ip_tcp_opt {
39 int optcode; /* code for option */
40 char *name; /* name of option */
41 int *subtree_index; /* pointer to subtree index for option */
42 opt_len_type len_type; /* type of option length field */
43 int optlen; /* value length should be (minimum if VARIABLE) */
44 void (*dissect)(const struct ip_tcp_opt *, tvbuff_t *, int, guint,
45 packet_info *, proto_tree *);
46 /* routine to dissect option */
49 /* Routine to dissect IP or TCP options. */
50 void dissect_ip_tcp_options(tvbuff_t *, int, guint,
51 const ip_tcp_opt *, int, int, packet_info *, proto_tree *);
53 /* Dissector table for "ip.proto"; used by IPv6 as well as IPv4 */
54 extern dissector_table_t ip_dissector_table;
56 /* Export the DSCP value-string table for other protocols */
57 extern const value_string dscp_vals[];