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