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-rw-r--r--include/uapi/linux/erspan.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/include/uapi/linux/erspan.h b/include/uapi/linux/erspan.h
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+++ b/include/uapi/linux/erspan.h
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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 _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 */