53 lines
1 KiB
C
53 lines
1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* ERSPAN Tunnel Metadata
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*
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* Copyright (c) 2018 VMware
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* Userspace API for metadata mode ERSPAN tunnel
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*/
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#ifndef _UAPI_ERSPAN_H
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#define _UAPI_ERSPAN_H
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#include <linux/types.h> /* For __beXX in userspace */
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#include <asm/byteorder.h>
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/* ERSPAN version 2 metadata header */
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struct erspan_md2 {
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__be32 timestamp;
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__be16 sgt; /* security group tag */
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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__u8 hwid_upper:2,
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ft:5,
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p:1;
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__u8 o:1,
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gra:2,
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dir:1,
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hwid:4;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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__u8 p:1,
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ft:5,
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hwid_upper:2;
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__u8 hwid:4,
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dir:1,
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gra:2,
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o:1;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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};
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struct erspan_metadata {
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int version;
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union {
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__be32 index; /* Version 1 (type II)*/
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struct erspan_md2 md2; /* Version 2 (type III) */
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} u;
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};
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#endif /* _UAPI_ERSPAN_H */
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