| /* 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 */ |
