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| /* 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 _ERSPAN_H
| #define _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 /* _ERSPAN_H */
|
|
