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34 lines
993 B
34 lines
993 B
#ifndef _UAPI_MPLS_H |
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#define _UAPI_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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#endif /* _UAPI_MPLS_H */
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