2 * Declarations of routines to fetch IPv4 and IPv6 addresses from a tvbuff
3 * and then mask out bits other than those covered by a prefix length
5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #ifndef __ADDR_AND_MASK_H__
25 #define __ADDR_AND_MASK_H__
29 #endif /* __cplusplus */
32 * These routines return PREFIX_LEN_OK on success, PREFIX_LEN_TOO_LONG if
33 * the prefix length is too long, and PREFIX_LEN_ZERO if the prefix length
37 #define PREFIX_LEN_OK 0
38 #define PREFIX_LEN_TOO_LONG 1
39 #define PREFIX_LEN_ZERO 2
41 extern int ipv4_addr_and_mask(tvbuff_t *tvb, int offset, guint8 *addr,
44 extern int ipv6_addr_and_mask(tvbuff_t *tvb, int offset,
45 struct e_in6_addr *addr, guint32 prefix_len);
47 guint32 ip_get_subnet_mask(const guint32 mask_length);
51 #endif /* __cplusplus */
53 #endif /* __ADDR_AND_MASK_H__ */