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-rw-r--r--include/net/xfrm.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index e823786e7c66..b41d2d10ff0e 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -20,6 +20,7 @@
#include <net/route.h>
#include <net/ipv6.h>
#include <net/ip6_fib.h>
+#include <net/ip6_route.h>
#include <net/flow.h>
#include <linux/interrupt.h>
@@ -1723,4 +1724,15 @@ static inline int xfrm_mark_put(struct sk_buff *skb, const struct xfrm_mark *m)
return ret;
}
+static inline int xfrm_skb_dst_mtu(struct sk_buff *skb)
+{
+ struct sock *sk = skb->sk;
+
+ if (sk && sk->sk_family == AF_INET6)
+ return ip6_skb_dst_mtu(skb);
+ else if (sk && sk->sk_family == AF_INET)
+ return ip_skb_dst_mtu(skb);
+ return dst_mtu(skb_dst(skb));
+}
+
#endif /* _NET_XFRM_H */