forked from osmocom/wireshark
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/* addr_and_mask.h
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* Declarations of routines to fetch IPv4 and IPv6 addresses from a tvbuff
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* and then mask out bits other than those covered by a prefix length
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __ADDR_AND_MASK_H__
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#define __ADDR_AND_MASK_H__
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/*
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* These routines return PREFIX_LEN_OK on success, PREFIX_LEN_TOO_LONG if
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* the prefix length is too long, and PREFIX_LEN_ZERO if the prefix length
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* is 0.
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*/
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#define PREFIX_LEN_OK 0
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#define PREFIX_LEN_TOO_LONG 1
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#define PREFIX_LEN_ZERO 2
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extern int tvb_get_ipv4_addr_with_prefix_len(tvbuff_t *tvb, int offset,
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guint8 *addr, guint32 prefix_len);
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extern int tvb_get_ipv6_addr_with_prefix_len(tvbuff_t *tvb, int offset,
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struct e_in6_addr *addr, guint32 prefix_len);
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guint32 ip_get_subnet_mask(const guint32 mask_length);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __ADDR_AND_MASK_H__ */
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