sctp: update the route for non-active transports after addresses are added

Update the route and saddr entries for the non-active transports as some
of the added addresses can be used as better source addresses, or may
be there is a better route.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

net/sctp/sm_make_chunk.c

@@ -3134,6 +3134,14 @@ static void sctp_asconf_param_success(struct sctp_association *asoc,
 				saddr->state = SCTP_ADDR_SRC;
 		}
 		local_bh_enable();
+		list_for_each_entry(transport, &asoc->peer.transport_addr_list,
+				transports) {
+			if (transport->state == SCTP_ACTIVE)
+				continue;
+			dst_release(transport->dst);
+			sctp_transport_route(transport, NULL,
+					     sctp_sk(asoc->base.sk));
+		}
 		break;
 	case SCTP_PARAM_DEL_IP:
 		local_bh_disable();