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      1  2760  dg199075 /*
      2  2760  dg199075  * CDDL HEADER START
      3  2760  dg199075  *
      4  2760  dg199075  * The contents of this file are subject to the terms of the
      5  2760  dg199075  * Common Development and Distribution License (the "License").
      6  2760  dg199075  * You may not use this file except in compliance with the License.
      7  2760  dg199075  *
      8  2760  dg199075  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  2760  dg199075  * or http://www.opensolaris.org/os/licensing.
     10  2760  dg199075  * See the License for the specific language governing permissions
     11  2760  dg199075  * and limitations under the License.
     12  2760  dg199075  *
     13  2760  dg199075  * When distributing Covered Code, include this CDDL HEADER in each
     14  2760  dg199075  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  2760  dg199075  * If applicable, add the following below this CDDL HEADER, with the
     16  2760  dg199075  * fields enclosed by brackets "[]" replaced with your own identifying
     17  2760  dg199075  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  2760  dg199075  *
     19  2760  dg199075  * CDDL HEADER END
     20  2760  dg199075  */
     21  2760  dg199075 
     22  2760  dg199075 /*
     23  2760  dg199075  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
     24  2760  dg199075  * Use is subject to license terms.
     25  2760  dg199075  */
     26  2760  dg199075 
     27  2760  dg199075 #ifndef _SNOOP_VLAN_H
     28  2760  dg199075 #define	_SNOOP_VLAN_H
     29  2760  dg199075 
     30  2760  dg199075 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31  2760  dg199075 
     32  2760  dg199075 #include <sys/ethernet.h>
     33  2760  dg199075 
     34  2760  dg199075 #ifdef __cplusplus
     35  2760  dg199075 extern "C" {
     36  2760  dg199075 #endif
     37  2760  dg199075 
     38  2760  dg199075 /*
     39  2760  dg199075  * The offset in bytes, in a VLAN tagged packet, from the
     40  2760  dg199075  * ethernet header ethertype (which is ETHERTYPE_VLAN) to
     41  2760  dg199075  * the encapsulated ethertype.
     42  2760  dg199075  */
     43  2760  dg199075 #define	ENCAP_ETHERTYPE_OFF (offsetof(struct ether_vlan_header, ether_type) -\
     44  2760  dg199075 	    offsetof(struct ether_vlan_header, ether_tpid))
     45  2760  dg199075 
     46  2760  dg199075 /*
     47  2760  dg199075  * The offset in bytes, from the beginning of an ethernet header,
     48  2760  dg199075  * to the VLAN ID.
     49  2760  dg199075  */
     50  2760  dg199075 #define	VLAN_ID_OFFSET (offsetof(struct ether_vlan_header, ether_tci) -\
     51  2760  dg199075 	    offsetof(struct ether_vlan_header, ether_dhost))
     52  2760  dg199075 
     53  2760  dg199075 #ifdef __cplusplus
     54  2760  dg199075 }
     55  2760  dg199075 #endif
     56  2760  dg199075 
     57  2760  dg199075 #endif /* _SNOOP_VLAN_H */
     58