gre: export gre_build_header() function.

[~andy/linux] / include / net / gre.h

diff --git a/include/net/gre.h b/include/net/gre.h
index c6ea0c72c605aa63bbe7ba12a7c69333f1edb251..cbb9d51d82c151147d0e9004741bdcaf2d2fe2ef 100644 (file)
--- a/include/net/gre.h
+++ b/include/net/gre.h
@@ -32,6 +32,8 @@ struct gre_cisco_protocol {
 
 int gre_cisco_register(struct gre_cisco_protocol *proto);
 int gre_cisco_unregister(struct gre_cisco_protocol *proto);
+void gre_build_header(struct sk_buff *skb, const struct tnl_ptk_info *tpi,
+                     int hdr_len);
 
 static inline int ip_gre_calc_hlen(__be16 o_flags)
 {