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/* ip_opts.h
* Definitions of structures and routines for dissection of options that
* work like IPv4 options
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __IP_OPTS_H__
#define __IP_OPTS_H__
/** @file
*/
typedef enum {
NO_LENGTH, /**< option has no data, hence no length */
FIXED_LENGTH, /**< option always has the same length */
VARIABLE_LENGTH /**< option is variable-length - optlen is minimum */
} opt_len_type;
/** Member of table of IP or TCP options. */
typedef struct ip_tcp_opt {
int optcode; /**< code for option */
const char *name; /**< name of option */
int *subtree_index; /**< pointer to subtree index for option */
opt_len_type len_type; /**< type of option length field */
int optlen; /**< value length should be (minimum if VARIABLE) */
void (*dissect)(const struct ip_tcp_opt *,
tvbuff_t *,
int,
guint,
packet_info *,
proto_tree *); /**< routine to dissect option */
} ip_tcp_opt;
/** Routine to dissect options that work like IPv4 options, where the
length field in the option, if present, includes the type and
length bytes. */
extern void dissect_ip_tcp_options(tvbuff_t *, int, guint,
const ip_tcp_opt *, int, int,
packet_info *, proto_tree *, proto_item *);
#endif
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