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- #ifndef _IPXE_VLAN_H
- #define _IPXE_VLAN_H
-
- /**
- * @file
- *
- * Virtual LANs
- *
- */
-
- FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
- /** A VLAN header */
- struct vlan_header {
- /** Tag control information */
- uint16_t tci;
- /** Encapsulated protocol */
- uint16_t net_proto;
- } __attribute__ (( packed ));
-
- /**
- * Extract VLAN tag from tag control information
- *
- * @v tci Tag control information
- * @ret tag VLAN tag
- */
- #define VLAN_TAG( tci ) ( (tci) & 0x0fff )
-
- /**
- * Extract VLAN priority from tag control information
- *
- * @v tci Tag control information
- * @ret priority Priority
- */
- #define VLAN_PRIORITY( tci ) ( (tci) >> 13 )
-
- /**
- * Construct VLAN tag control information
- *
- * @v tag VLAN tag
- * @v priority Priority
- * @ret tci Tag control information
- */
- #define VLAN_TCI( tag, priority ) ( ( (priority) << 13 ) | (tag) )
-
- /**
- * Check VLAN tag is valid
- *
- * @v tag VLAN tag
- * @ret is_valid VLAN tag is valid
- */
- #define VLAN_TAG_IS_VALID( tag ) ( (tag) < 0xfff )
-
- /**
- * Check VLAN priority is valid
- *
- * @v priority VLAN priority
- * @ret is_valid VLAN priority is valid
- */
- #define VLAN_PRIORITY_IS_VALID( priority ) ( (priority) <= 7 )
-
- extern struct net_device * vlan_find ( struct net_device *trunk,
- unsigned int tag );
- extern unsigned int vlan_tag ( struct net_device *netdev );
- extern int vlan_can_be_trunk ( struct net_device *trunk );
- extern int vlan_create ( struct net_device *trunk, unsigned int tag,
- unsigned int priority );
- extern int vlan_destroy ( struct net_device *netdev );
-
- #endif /* _IPXE_VLAN_H */
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