78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
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/*
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* 802.1Q VLAN protocol definitions
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*
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* $Copyright Open Broadcom Corporation$
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*
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* $Id: vlan.h 352279 2012-08-22 07:21:57Z cylee $
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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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