sctp: check cached dst before using it

[pandora-kernel.git] / include / net / sctp / sctp.h

diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 6a72a58..ad03988 100644 (file)
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -703,4 +703,17 @@ static inline void sctp_v4_map_v6(union sctp_addr *addr)
        addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff);
 }
 
+/* The cookie is always 0 since this is how it's used in the
+ * pmtu code.
+ */
+static inline struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t)
+{
+       if (t->dst && !dst_check(t->dst, 0)) {
+               dst_release(t->dst);
+               t->dst = NULL;
+       }
+
+       return t->dst;
+}
+
 #endif /* __net_sctp_h__ */