Wireshark 2.9.0-477-g68ec514b The Wireshark network protocol analyzer

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addr_and_mask.h
1 /* addr_and_mask.h
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
4 *
5 * Wireshark - Network traffic analyzer
6 * By Gerald Combs <gerald@wireshark.org>
7 * Copyright 1998 Gerald Combs
8 *
9 * SPDX-License-Identifier: GPL-2.0-or-later
10 */
11
12 #ifndef __ADDR_AND_MASK_H__
13 #define __ADDR_AND_MASK_H__
14
15 #ifdef __cplusplus
16 extern "C" {
17 #endif /* __cplusplus */
18
19 /*
20 * These routines return PREFIX_LEN_OK on success, PREFIX_LEN_TOO_LONG if
21 * the prefix length is too long, and PREFIX_LEN_ZERO if the prefix length
22 * is 0.
23 */
24
25 #define PREFIX_LEN_OK 0
26 #define PREFIX_LEN_TOO_LONG 1
27 #define PREFIX_LEN_ZERO 2
28
29 extern int tvb_get_ipv4_addr_with_prefix_len(tvbuff_t *tvb, int offset,
30 guint8 *addr, guint32 prefix_len);
31
32 extern int tvb_get_ipv6_addr_with_prefix_len(tvbuff_t *tvb, int offset,
33 ws_in6_addr *addr, guint32 prefix_len);
34
35 guint32 ip_get_subnet_mask(const guint32 mask_length);
36
37 #ifdef __cplusplus
38 }
39 #endif /* __cplusplus */
40
41 #endif /* __ADDR_AND_MASK_H__ */
e_in6_addr
Definition: inet_ipv6.h:20
tvbuff
Definition: tvbuff-int.h:35