From d350a823020e71e20a10d1dfa44f1d1d653b0334 Mon Sep 17 00:00:00 2001 From: William Tu Date: Thu, 25 Jan 2018 13:20:10 -0800 Subject: 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 Acked-by: Pravin B Shelar Signed-off-by: David S. Miller --- include/uapi/linux/erspan.h | 52 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 include/uapi/linux/erspan.h (limited to 'include/uapi/linux/erspan.h') diff --git a/include/uapi/linux/erspan.h b/include/uapi/linux/erspan.h new file mode 100644 index 000000000000..841573019ae1 --- /dev/null +++ b/include/uapi/linux/erspan.h @@ -0,0 +1,52 @@ +/* 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 /* For __beXX in userspace */ +#include + +/* 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 " +#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 */ -- cgit v1.2.3