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sctp: check cached dst before using it

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dst_check() will take care of SA (and obsolete field), hence
IPsec rekeying scenario is taken into account.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Vlad Yaseivch <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel
2012-05-04 05:24:54 +00:00
committed by David S. Miller
parent c57b546840
commit e0268868ba
3 changed files with 14 additions and 20 deletions
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4
net/sctp/output.c
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@@ -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);