1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _UAPI_MPLS_H |
3 | #define _UAPI_MPLS_H |
4 | |
5 | #include <linux/types.h> |
6 | #include <asm/byteorder.h> |
7 | |
8 | /* Reference: RFC 5462, RFC 3032 |
9 | * |
10 | * 0 1 2 3 |
11 | * 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 |
12 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
13 | * | Label | TC |S| TTL | |
14 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
15 | * |
16 | * Label: Label Value, 20 bits |
17 | * TC: Traffic Class field, 3 bits |
18 | * S: Bottom of Stack, 1 bit |
19 | * TTL: Time to Live, 8 bits |
20 | */ |
21 | |
22 | struct mpls_label { |
23 | __be32 entry; |
24 | }; |
25 | |
26 | #define MPLS_LS_LABEL_MASK 0xFFFFF000 |
27 | #define MPLS_LS_LABEL_SHIFT 12 |
28 | #define MPLS_LS_TC_MASK 0x00000E00 |
29 | #define MPLS_LS_TC_SHIFT 9 |
30 | #define MPLS_LS_S_MASK 0x00000100 |
31 | #define MPLS_LS_S_SHIFT 8 |
32 | #define MPLS_LS_TTL_MASK 0x000000FF |
33 | #define MPLS_LS_TTL_SHIFT 0 |
34 | |
35 | /* Reserved labels */ |
36 | #define MPLS_LABEL_IPV4NULL 0 /* RFC3032 */ |
37 | #define MPLS_LABEL_RTALERT 1 /* RFC3032 */ |
38 | #define MPLS_LABEL_IPV6NULL 2 /* RFC3032 */ |
39 | #define MPLS_LABEL_IMPLNULL 3 /* RFC3032 */ |
40 | #define MPLS_LABEL_ENTROPY 7 /* RFC6790 */ |
41 | #define MPLS_LABEL_GAL 13 /* RFC5586 */ |
42 | #define MPLS_LABEL_OAMALERT 14 /* RFC3429 */ |
43 | #define MPLS_LABEL_EXTENSION 15 /* RFC7274 */ |
44 | |
45 | #define MPLS_LABEL_FIRST_UNRESERVED 16 /* RFC3032 */ |
46 | |
47 | /* These are embedded into IFLA_STATS_AF_SPEC: |
48 | * [IFLA_STATS_AF_SPEC] |
49 | * -> [AF_MPLS] |
50 | * -> [MPLS_STATS_xxx] |
51 | * |
52 | * Attributes: |
53 | * [MPLS_STATS_LINK] = { |
54 | * struct mpls_link_stats |
55 | * } |
56 | */ |
57 | enum { |
58 | MPLS_STATS_UNSPEC, /* also used as 64bit pad attribute */ |
59 | MPLS_STATS_LINK, |
60 | __MPLS_STATS_MAX, |
61 | }; |
62 | |
63 | #define MPLS_STATS_MAX (__MPLS_STATS_MAX - 1) |
64 | |
65 | struct mpls_link_stats { |
66 | __u64 rx_packets; /* total packets received */ |
67 | __u64 tx_packets; /* total packets transmitted */ |
68 | __u64 rx_bytes; /* total bytes received */ |
69 | __u64 tx_bytes; /* total bytes transmitted */ |
70 | __u64 rx_errors; /* bad packets received */ |
71 | __u64 tx_errors; /* packet transmit problems */ |
72 | __u64 rx_dropped; /* packet dropped on receive */ |
73 | __u64 tx_dropped; /* packet dropped on transmit */ |
74 | __u64 rx_noroute; /* no route for packet dest */ |
75 | }; |
76 | |
77 | #endif /* _UAPI_MPLS_H */ |
78 | |