1 files changed, 18 insertions, 0 deletions

diff --git a/include/net/gre.h b/include/net/gre.h
new file mode 100644
index 000000000000..82665474bcb7
--- /dev/null
+++ b/include/net/gre.h
@@ -0,0 +1,18 @@
+#ifndef __LINUX_GRE_H
+#define __LINUX_GRE_H
+
+#include <linux/skbuff.h>
+
+#define GREPROTO_CISCO          0
+#define GREPROTO_PPTP           1
+#define GREPROTO_MAX            2
+
+struct gre_protocol {
+        int  (*handler)(struct sk_buff *skb);
+        void (*err_handler)(struct sk_buff *skb, u32 info);
+};
+
+int gre_add_protocol(const struct gre_protocol *proto, u8 version);
+int gre_del_protocol(const struct gre_protocol *proto, u8 version);
+
+#endif