IB/ipoib: Add detailed error message to dev_queue_xmit call

Add a detailed return code to dev_queue_xmit function when
calling to requeue packet via __skb_dequeue.
Signed-off-by: NFeras Daoud <ferasda@mellanox.com>
Signed-off-by: NErez Shitrit <erezsh@mellanox.com>
Reviewed-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NLeon Romanovsky <leon@kernel.org>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/infiniband/ulp/ipoib/ipoib_cm.c

@@ -1015,9 +1015,10 @@ static int ipoib_cm_rep_handler(struct ib_cm_id *cm_id, struct ib_cm_event *even
 
 	while ((skb = __skb_dequeue(&skqueue))) {
 		skb->dev = p->dev;
-		if (dev_queue_xmit(skb))
-			ipoib_warn(priv, "dev_queue_xmit failed "
-				   "to requeue packet\n");
+		ret = dev_queue_xmit(skb);
+		if (ret)
+			ipoib_warn(priv, "%s:dev_queue_xmit failed to re-queue packet, ret:%d\n",
+				   __func__, ret);
 	}
 
 	ret = ib_send_cm_rtu(cm_id, NULL, 0);

drivers/infiniband/ulp/ipoib/ipoib_main.c

@@ -843,10 +843,12 @@ static void path_rec_completion(int status,
 		ipoib_put_ah(old_ah);
 
 	while ((skb = __skb_dequeue(&skqueue))) {
+		int ret;
 		skb->dev = dev;
-		if (dev_queue_xmit(skb))
-			ipoib_warn(priv, "dev_queue_xmit failed "
-				   "to requeue packet\n");
+		ret = dev_queue_xmit(skb);
+		if (ret)
+			ipoib_warn(priv, "%s: dev_queue_xmit failed to re-queue packet, ret:%d\n",
+				   __func__, ret);
 	}
 }
 

drivers/infiniband/ulp/ipoib/ipoib_multicast.c

@@ -314,9 +314,11 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
 		netif_tx_unlock_bh(dev);
 
 		skb->dev = dev;
-		if (dev_queue_xmit(skb))
-			ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n");
 
+		ret = dev_queue_xmit(skb);
+		if (ret)
+			ipoib_warn(priv, "%s:dev_queue_xmit failed to re-queue packet, ret:%d\n",
+				   __func__, ret);
 		netif_tx_lock_bh(dev);
 	}
 	netif_tx_unlock_bh(dev);