96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
|
/*
|
||
|
|
* 802.1Q VLAN protocol definitions
|
||
|
|
*
|
||
|
|
* Copyright (C) 1999-2015, 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_ */
|