KVM: implement multiple address spaces
[deliverable/linux.git] / include / uapi / linux / mpls.h
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1#ifndef _UAPI_MPLS_H
2#define _UAPI_MPLS_H
3
4#include <linux/types.h>
5#include <asm/byteorder.h>
6
7/* Reference: RFC 5462, RFC 3032
8 *
9 * 0 1 2 3
10 * 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
11 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
12 * | Label | TC |S| TTL |
13 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
14 *
15 * Label: Label Value, 20 bits
16 * TC: Traffic Class field, 3 bits
17 * S: Bottom of Stack, 1 bit
18 * TTL: Time to Live, 8 bits
19 */
20
21struct mpls_label {
22 __be32 entry;
23};
24
25#define MPLS_LS_LABEL_MASK 0xFFFFF000
26#define MPLS_LS_LABEL_SHIFT 12
27#define MPLS_LS_TC_MASK 0x00000E00
28#define MPLS_LS_TC_SHIFT 9
29#define MPLS_LS_S_MASK 0x00000100
30#define MPLS_LS_S_SHIFT 8
31#define MPLS_LS_TTL_MASK 0x000000FF
32#define MPLS_LS_TTL_SHIFT 0
33
34#endif /* _UAPI_MPLS_H */
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