RDMA/nes: Report correct port state if interface is down

With commit cd6860eb ("RDMA/nes: Fix hangs on ifdown") we no longer
remove nes interfaces on ifdown.  On nes_query_port(), add an
additional check of the netdev queue and report IB_PORT_DOWN if the
queue is not running.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/nes/nes_verbs.c

@@ -584,7 +584,9 @@ static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr
 	props->lmc = 0;
 	props->sm_lid = 0;
 	props->sm_sl = 0;
-	if (nesvnic->linkup)
+	if (netif_queue_stopped(netdev))
+		props->state = IB_PORT_DOWN;
+	else if (nesvnic->linkup)
 		props->state = IB_PORT_ACTIVE;
 	else
 		props->state = IB_PORT_DOWN;