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Diffstat (limited to 'package/broadcom-57xx/src/proto/vlan.h')
| -rw-r--r-- | package/broadcom-57xx/src/proto/vlan.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/package/broadcom-57xx/src/proto/vlan.h b/package/broadcom-57xx/src/proto/vlan.h new file mode 100644 index 0000000000..79cd5891e1 --- /dev/null +++ b/package/broadcom-57xx/src/proto/vlan.h @@ -0,0 +1,52 @@ +/* + * 802.1Q VLAN protocol definitions + * + * Copyright 2007, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + * $Id: vlan.h,v 1.1.1.4 2007/05/31 08:00:41 michael Exp $ + */ + +#ifndef _vlan_h_ +#define _vlan_h_ + +/* enable structure packing */ +#if defined(__GNUC__) +#define PACKED __attribute__((packed)) +#else +#pragma pack(1) +#define PACKED +#endif + +#define VLAN_VID_MASK 0xfff /* low 12 bits are vlan id */ +#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_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 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; +}; + +#define ETHERVLAN_HDR_LEN (ETHER_HDR_LEN + VLAN_TAG_LEN) + +#undef PACKED +#if !defined(__GNUC__) +#pragma pack() +#endif + +#endif /* _vlan_h_ */ |