2 * Definitions of structures and routines for dissection of options that
3 * work like IPv4 options
7 * Wireshark - Network traffic analyzer
8 * By Gerald Combs <gerald@wireshark.org>
9 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 #include "ws_symbol_export.h"
35 OPT_LEN_NO_LENGTH, /**< option has no data, hence no length */
36 OPT_LEN_FIXED_LENGTH, /**< option always has the same length */
37 OPT_LEN_VARIABLE_LENGTH /**< option is variable-length - optlen is minimum */
40 /** Member of table of IP or TCP options. */
41 typedef struct ip_tcp_opt {
42 int optcode; /**< code for option */
43 const char *name; /**< name of option */
44 int *subtree_index; /**< pointer to subtree index for option */
45 opt_len_type len_type; /**< type of option length field */
46 int optlen; /**< value length should be (minimum if VARIABLE) */
47 void (*dissect)(const struct ip_tcp_opt *,
53 void *); /**< routine to dissect option */
56 typedef struct ip_tcp_opt_type {
59 int* phf_opt_type_copy;
60 int* phf_opt_type_class;
61 int* phf_opt_type_number;
64 /** Routine to dissect options that work like IPv4 options, where the
65 length field in the option, if present, includes the type and
67 extern void dissect_ip_tcp_options(tvbuff_t *tvb, int offset, guint length,
68 const ip_tcp_opt *opttab, int nopts, int eol,
69 ip_tcp_opt_type* opttypes, expert_field* ei_bad,
70 packet_info *pinfo, proto_tree *opt_tree,
71 proto_item *opt_item, void * data);
73 /* Quick-Start option, as defined by RFC4782 */
74 #define QS_FUNC_MASK 0xf0
75 #define QS_RATE_MASK 0x0f
76 #define QS_RATE_REQUEST 0
77 #define QS_RATE_REPORT 8
80 #define IPOPT_COPY_MASK 0x80
81 #define IPOPT_CLASS_MASK 0x60
82 #define IPOPT_NUMBER_MASK 0x1F
84 WS_DLL_PUBLIC const value_string qs_func_vals[];
85 WS_DLL_PUBLIC value_string_ext qs_rate_vals_ext;
87 WS_DLL_PUBLIC const value_string ipopt_type_class_vals[];
88 WS_DLL_PUBLIC const value_string ipopt_type_number_vals[];