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