sctp: Push struct net down to sctp_chunk_event_lookup

This trickles up through sctp_sm_lookup_event up to sctp_do_sm
and up further into sctp_primitiv_NAME before the code reaches
places where struct net can be reliably found.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 5308301..a2ceb70 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -466,11 +466,13 @@
 		}
 			
 	} else {
+		struct net *net = sock_net(sk);
+
 		if (timer_pending(&t->proto_unreach_timer) &&
 		    del_timer(&t->proto_unreach_timer))
 			sctp_association_put(asoc);
 
-		sctp_do_sm(SCTP_EVENT_T_OTHER,
+		sctp_do_sm(net, SCTP_EVENT_T_OTHER,
 			   SCTP_ST_OTHER(SCTP_EVENT_ICMP_PROTO_UNREACH),
 			   asoc->state, asoc->ep, asoc, t,
 			   GFP_ATOMIC);