1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SNOOP_VLAN_H 28 #define _SNOOP_VLAN_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/ethernet.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* 39 * The offset in bytes, in a VLAN tagged packet, from the 40 * ethernet header ethertype (which is ETHERTYPE_VLAN) to 41 * the encapsulated ethertype. 42 */ 43 #define ENCAP_ETHERTYPE_OFF (offsetof(struct ether_vlan_header, ether_type) -\ 44 offsetof(struct ether_vlan_header, ether_tpid)) 45 46 /* 47 * The offset in bytes, from the beginning of an ethernet header, 48 * to the VLAN ID. 49 */ 50 #define VLAN_ID_OFFSET (offsetof(struct ether_vlan_header, ether_tci) -\ 51 offsetof(struct ether_vlan_header, ether_dhost)) 52 53 #ifdef __cplusplus 54 } 55 #endif 56 57 #endif /* _SNOOP_VLAN_H */ 58