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