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- /*
- * 802.1Q VLAN protocol definitions
- *
- * Portions of this code are copyright (c) 2020 Cypress Semiconductor Corporation
- *
- * Copyright (C) 1999-2020, 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.
- *
- *
- * <<Broadcom-WL-IPTag/Open:>>
- *
- * $Id: vlan.h 681862 2018-01-03 12:34:14Z $
- */
- #ifndef _vlan_h_
- #define _vlan_h_
- #ifndef _TYPEDEFS_H_
- #include <typedefs.h>
- #endif // 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 // 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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