/* 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 */