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49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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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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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Breno Silva <breno.silva@gmail.com>
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*/
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#ifndef __DECODE_VLAN_H__
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#define __DECODE_VLAN_H__
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/** Vlan type */
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#define ETHERNET_TYPE_VLAN 0x8100
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/** Vlan macros to access Vlan priority, Vlan CFI and VID */
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#define GET_VLAN_PRIORITY(vlanh) ((ntohs((vlanh)->vlan_cfi) & 0xe000) >> 13)
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#define GET_VLAN_CFI(vlanh) ((ntohs((vlanh)->vlan_cfi) & 0x0100) >> 12)
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#define GET_VLAN_ID(vlanh) ((uint16_t)(ntohs((vlanh)->vlan_cfi) & 0x0FFF))
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#define GET_VLAN_PROTO(vlanh) ((ntohs((vlanh)->protocol)))
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/** Vlan header struct */
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typedef struct VLANHdr_ {
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uint16_t vlan_cfi;
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uint16_t protocol; /**< protocol field */
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} VLANHdr;
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/** VLAN header length */
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#define VLAN_HEADER_LEN 4
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void DecodeVLANRegisterTests(void);
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#endif /* __DECODE_VLAN_H__ */
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