sctp: check cached dst before using it

[linux-flexiantxendom0-3.2.10.git] / net / sctp / output.c

diff --git a/net/sctp/output.c b/net/sctp/output.c
index 817174e..8fc4dcd 100644 (file)
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -377,9 +377,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
         */
        skb_set_owner_w(nskb, sk);
 
-       /* The 'obsolete' field of dst is set to 2 when a dst is freed. */
-       if (!dst || (dst->obsolete > 1)) {
-               dst_release(dst);
+       if (!sctp_transport_dst_check(tp)) {
                sctp_transport_route(tp, NULL, sctp_sk(sk));
                if (asoc && (asoc->param_flags & SPP_PMTUD_ENABLE)) {
                        sctp_assoc_sync_pmtu(asoc);