/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* 802.1Q VLAN protocol definitions
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*
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* Copyright (C) 1999-2017, Broadcom Corporation
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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*
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id: vlan.h 700076 2017-05-17 14:42:22Z $
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*/
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#ifndef _vlan_h_
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#define _vlan_h_
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#ifndef _TYPEDEFS_H_
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#include <typedefs.h>
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#endif
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/* This marks the start of a packed structure section. */
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#include <packed_section_start.h>
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#ifndef VLAN_VID_MASK
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#define VLAN_VID_MASK 0xfff /* low 12 bits are vlan id */
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#endif
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#define VLAN_CFI_SHIFT 12 /* canonical format indicator bit */
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#define VLAN_PRI_SHIFT 13 /* user priority */
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#define VLAN_PRI_MASK 7 /* 3 bits of priority */
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#define VLAN_TPID_OFFSET 12 /* offset of tag protocol id field */
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#define VLAN_TCI_OFFSET 14 /* offset of tag ctrl info field */
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#define VLAN_TAG_LEN 4
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#define VLAN_TAG_OFFSET (2 * ETHER_ADDR_LEN) /* offset in Ethernet II packet only */
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#define VLAN_TPID 0x8100 /* VLAN ethertype/Tag Protocol ID */
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struct vlan_header {
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uint16 vlan_type; /* 0x8100 */
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uint16 vlan_tag; /* priority, cfi and vid */
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};
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struct ethervlan_header {
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uint8 ether_dhost[ETHER_ADDR_LEN];
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uint8 ether_shost[ETHER_ADDR_LEN];
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uint16 vlan_type; /* 0x8100 */
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uint16 vlan_tag; /* priority, cfi and vid */
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uint16 ether_type;
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};
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struct dot3_mac_llc_snapvlan_header {
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uint8 ether_dhost[ETHER_ADDR_LEN]; /* dest mac */
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uint8 ether_shost[ETHER_ADDR_LEN]; /* src mac */
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uint16 length; /* frame length incl header */
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uint8 dsap; /* always 0xAA */
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uint8 ssap; /* always 0xAA */
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uint8 ctl; /* always 0x03 */
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uint8 oui[3]; /* RFC1042: 0x00 0x00 0x00
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* Bridge-Tunnel: 0x00 0x00 0xF8
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*/
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uint16 vlan_type; /* 0x8100 */
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uint16 vlan_tag; /* priority, cfi and vid */
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uint16 ether_type; /* ethertype */
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};
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#define ETHERVLAN_HDR_LEN (ETHER_HDR_LEN + VLAN_TAG_LEN)
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/* This marks the end of a packed structure section. */
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#include <packed_section_end.h>
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#define ETHERVLAN_MOVE_HDR(d, s) \
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do { \
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struct ethervlan_header t; \
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t = *(struct ethervlan_header *)(s); \
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*(struct ethervlan_header *)(d) = t; \
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} while (0)
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#endif /* _vlan_h_ */
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