projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| f3baa393 SW |
1 | #ifndef _UAPI_MPLS_H |
| 2 | #define _UAPI_MPLS_H | |
| 3 | ||
| 4 | #include <linux/types.h> | |
| 5 | #include <asm/byteorder.h> | |
| 6 | ||
| 7 | /* Reference: RFC 5462, RFC 3032 | |
| 8 | * | |
| 9 | * 0 1 2 3 | |
| 10 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
| 11 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 12 | * | Label | TC |S| TTL | | |
| 13 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
| 14 | * | |
| 15 | * Label: Label Value, 20 bits | |
| 16 | * TC: Traffic Class field, 3 bits | |
| 17 | * S: Bottom of Stack, 1 bit | |
| 18 | * TTL: Time to Live, 8 bits | |
| 19 | */ | |
| 20 | ||
| 21 | struct mpls_label { | |
| 22 | __be32 entry; | |
| 23 | }; | |
| 24 | ||
| 25 | #define MPLS_LS_LABEL_MASK 0xFFFFF000 | |
| 26 | #define MPLS_LS_LABEL_SHIFT 12 | |
| 27 | #define MPLS_LS_TC_MASK 0x00000E00 | |
| 28 | #define MPLS_LS_TC_SHIFT 9 | |
| 29 | #define MPLS_LS_S_MASK 0x00000100 | |
| 30 | #define MPLS_LS_S_SHIFT 8 | |
| 31 | #define MPLS_LS_TTL_MASK 0x000000FF | |
| 32 | #define MPLS_LS_TTL_SHIFT 0 | |
| 33 | ||
| c967a087 | 34 | /* Reserved labels */ |
| 78f5b899 TH |
35 | #define MPLS_LABEL_IPV4NULL 0 /* RFC3032 */ |
| 36 | #define MPLS_LABEL_RTALERT 1 /* RFC3032 */ | |
| 37 | #define MPLS_LABEL_IPV6NULL 2 /* RFC3032 */ | |
| 38 | #define MPLS_LABEL_IMPLNULL 3 /* RFC3032 */ | |
| 39 | #define MPLS_LABEL_ENTROPY 7 /* RFC6790 */ | |
| c967a087 | 40 | #define MPLS_LABEL_GAL 13 /* RFC5586 */ |
| 78f5b899 | 41 | #define MPLS_LABEL_OAMALERT 14 /* RFC3429 */ |
| c967a087 TH |
42 | #define MPLS_LABEL_EXTENSION 15 /* RFC7274 */ |
| 43 | ||
| f3baa393 | 44 | #endif /* _UAPI_MPLS_H */ |