/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
#ifndef _UAPI_MPLS_H
|
#define _UAPI_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 /* _UAPI_MPLS_H */
|
