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/* addr_and_mask.h
* Declarations of routines to fetch IPv4 and IPv6 addresses from a tvbuff
* and then mask out bits other than those covered by a prefix length
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ADDR_AND_MASK_H__
#define __ADDR_AND_MASK_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*
* These routines return PREFIX_LEN_OK on success, PREFIX_LEN_TOO_LONG if
* the prefix length is too long, and PREFIX_LEN_ZERO if the prefix length
* is 0.
*/
#define PREFIX_LEN_OK 0
#define PREFIX_LEN_TOO_LONG 1
#define PREFIX_LEN_ZERO 2
extern int tvb_get_ipv4_addr_with_prefix_len(tvbuff_t *tvb, int offset,
guint8 *addr, guint32 prefix_len);
extern int tvb_get_ipv6_addr_with_prefix_len(tvbuff_t *tvb, int offset,
struct e_in6_addr *addr, guint32 prefix_len);
guint32 ip_get_subnet_mask(const guint32 mask_length);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __ADDR_AND_MASK_H__ */
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