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Edit File : mpls.h \| Size : 2.25 KB
/* 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 */ Back

Edit File : mpls.h | Size : 2.25 KB

/* 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 */

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