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/*
* 802.1Q VLAN protocol definitions
*
* Copyright (C) 1999-2014, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
*
* $Id: vlan.h 382883 2013-02-04 23:26:09Z $
*/
#ifndef _vlan_h_
#define _vlan_h_
#ifndef _TYPEDEFS_H_
#include <typedefs.h>
#endif
/* This marks the start of a packed structure section. */
#include <packed_section_start.h>
#ifndef VLAN_VID_MASK
#define VLAN_VID_MASK 0xfff /* low 12 bits are vlan id */
#endif
#define VLAN_CFI_SHIFT 12 /* canonical format indicator bit */
#define VLAN_PRI_SHIFT 13 /* user priority */
#define VLAN_PRI_MASK 7 /* 3 bits of priority */
#define VLAN_TPID_OFFSET 12 /* offset of tag protocol id field */
#define VLAN_TCI_OFFSET 14 /* offset of tag ctrl info field */
#define VLAN_TAG_LEN 4
#define VLAN_TAG_OFFSET (2 * ETHER_ADDR_LEN) /* offset in Ethernet II packet only */
#define VLAN_TPID 0x8100 /* VLAN ethertype/Tag Protocol ID */
struct vlan_header {
uint16 vlan_type; /* 0x8100 */
uint16 vlan_tag; /* priority, cfi and vid */
};
struct ethervlan_header {
uint8 ether_dhost[ETHER_ADDR_LEN];
uint8 ether_shost[ETHER_ADDR_LEN];
uint16 vlan_type; /* 0x8100 */
uint16 vlan_tag; /* priority, cfi and vid */
uint16 ether_type;
};
struct dot3_mac_llc_snapvlan_header {
uint8 ether_dhost[ETHER_ADDR_LEN]; /* dest mac */
uint8 ether_shost[ETHER_ADDR_LEN]; /* src mac */
uint16 length; /* frame length incl header */
uint8 dsap; /* always 0xAA */
uint8 ssap; /* always 0xAA */
uint8 ctl; /* always 0x03 */
uint8 oui[3]; /* RFC1042: 0x00 0x00 0x00
* Bridge-Tunnel: 0x00 0x00 0xF8
*/
uint16 vlan_type; /* 0x8100 */
uint16 vlan_tag; /* priority, cfi and vid */
uint16 ether_type; /* ethertype */
};
#define ETHERVLAN_HDR_LEN (ETHER_HDR_LEN + VLAN_TAG_LEN)
/* This marks the end of a packed structure section. */
#include <packed_section_end.h>
#define ETHERVLAN_MOVE_HDR(d, s) \
do { \
struct ethervlan_header t; \
t = *(struct ethervlan_header *)(s); \
*(struct ethervlan_header *)(d) = t; \
} while (0)
#endif /* _vlan_h_ */
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