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mpls.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _MPLS_H #define _MPLS_H #include <linux/types.h> #include <asm/byteorder.h> /* Reference: RFC 5462, RFC 3032 * * 0 1 2 3 * 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 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | Label | TC |S| TTL | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * * Label: Label Value, 20 bits * TC: Traffic Class field, 3 bits * S: Bottom of Stack, 1 bit * TTL: Time to Live, 8 bits */ struct mpls_label { __be32 entry; }; #define MPLS_LS_LABEL_MASK 0xFFFFF000 #define MPLS_LS_LABEL_SHIFT 12 #define MPLS_LS_TC_MASK 0x00000E00 #define MPLS_LS_TC_SHIFT 9 #define MPLS_LS_S_MASK 0x00000100 #define MPLS_LS_S_SHIFT 8 #define MPLS_LS_TTL_MASK 0x000000FF #define MPLS_LS_TTL_SHIFT 0 /* Reserved labels */ #define MPLS_LABEL_IPV4NULL 0 /* RFC3032 */ #define MPLS_LABEL_RTALERT 1 /* RFC3032 */ #define MPLS_LABEL_IPV6NULL 2 /* RFC3032 */ #define MPLS_LABEL_IMPLNULL 3 /* RFC3032 */ #define MPLS_LABEL_ENTROPY 7 /* RFC6790 */ #define MPLS_LABEL_GAL 13 /* RFC5586 */ #define MPLS_LABEL_OAMALERT 14 /* RFC3429 */ #define MPLS_LABEL_EXTENSION 15 /* RFC7274 */ #define MPLS_LABEL_FIRST_UNRESERVED 16 /* RFC3032 */ /* These are embedded into IFLA_STATS_AF_SPEC: * [IFLA_STATS_AF_SPEC] * -> [AF_MPLS] * -> [MPLS_STATS_xxx] * * Attributes: * [MPLS_STATS_LINK] = { * struct mpls_link_stats * } */ enum { MPLS_STATS_UNSPEC, /* also used as 64bit pad attribute */ MPLS_STATS_LINK, __MPLS_STATS_MAX, }; #define MPLS_STATS_MAX (__MPLS_STATS_MAX - 1) struct mpls_link_stats { __u64 rx_packets; /* total packets received */ __u64 tx_packets; /* total packets transmitted */ __u64 rx_bytes; /* total bytes received */ __u64 tx_bytes; /* total bytes transmitted */ __u64 rx_errors; /* bad packets received */ __u64 tx_errors; /* packet transmit problems */ __u64 rx_dropped; /* packet dropped on receive */ __u64 tx_dropped; /* packet dropped on transmit */ __u64 rx_noroute; /* no route for packet dest */ }; #endif /* _MPLS_H */