linux-stable/include/uapi/linux/erspan.h
William Tu d350a82302 net: erspan: create erspan metadata uapi header
The patch adds a new uapi header file, erspan.h, and moves
the 'struct erspan_metadata' from internal erspan.h to it.

Signed-off-by: William Tu <u9012063@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25 21:39:43 -05:00

52 lines
1 KiB
C

/* 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 */