text: /*
   * 802.1Q VLAN protocol definitions
   *
   * $Copyright Open Cypress Semiconductor$
   *
   * $Id: vlan.h 382883 2013-02-04 23:26:09Z xwei $
   */
  
  #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_ */
  