1 files changed, 24 insertions, 23 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 81b8227214f1..3cfb682b91b0 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -86,7 +86,7 @@ struct workqueue_struct *ipoib_workqueue;
 
 struct ib_sa_client ipoib_sa_client;
 
-static void ipoib_add_one(struct ib_device *device);
+static int ipoib_add_one(struct ib_device *device);
 static void ipoib_remove_one(struct ib_device *device, void *client_data);
 static void ipoib_neigh_reclaim(struct rcu_head *rp);
 static struct net_device *ipoib_get_net_dev_by_params(
@@ -479,9 +479,6 @@ static struct net_device *ipoib_get_net_dev_by_params(
 	if (ret)
 		return NULL;
 
-	if (!dev_list)
-		return NULL;
-
 	/* See if we can find a unique device matching the L2 parameters */
 	matches = __ipoib_get_net_dev_by_params(dev_list, port, pkey_index,
 						gid, NULL, &net_dev);
@@ -529,6 +526,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf)
 			   "will cause multicast packet drops\n");
 		netdev_update_features(dev);
 		dev_set_mtu(dev, ipoib_cm_max_mtu(dev));
+		netif_set_real_num_tx_queues(dev, 1);
 		rtnl_unlock();
 		priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM;
 
@@ -540,6 +538,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf)
 		clear_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 		netdev_update_features(dev);
 		dev_set_mtu(dev, min(priv->mcast_mtu, dev->mtu));
+		netif_set_real_num_tx_queues(dev, dev->num_tx_queues);
 		rtnl_unlock();
 		ipoib_flush_paths(dev);
 		return (!rtnl_trylock()) ? -EBUSY : 0;
@@ -1184,9 +1183,11 @@ static void ipoib_timeout(struct net_device *dev, unsigned int txqueue)
 
 	ipoib_warn(priv, "transmit timeout: latency %d msecs\n",
 		   jiffies_to_msecs(jiffies - dev_trans_start(dev)));
-	ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n",
-		   netif_queue_stopped(dev),
-		   priv->tx_head, priv->tx_tail);
+	ipoib_warn(priv,
+		   "queue stopped %d, tx_head %u, tx_tail %u, global_tx_head %u, global_tx_tail %u\n",
+		   netif_queue_stopped(dev), priv->tx_head, priv->tx_tail,
+		   priv->global_tx_head, priv->global_tx_tail);
+
 	/* XXX reset QP, etc. */
 }
 
@@ -1701,7 +1702,7 @@ static int ipoib_dev_init_default(struct net_device *dev)
 		goto out_rx_ring_cleanup;
 	}
 
-	/* priv->tx_head, tx_tail & tx_outstanding are already 0 */
+	/* priv->tx_head, tx_tail and global_tx_tail/head are already 0 */
 
 	if (ipoib_transport_dev_init(dev, priv->ca)) {
 		pr_warn("%s: ipoib_transport_dev_init failed\n",
@@ -1858,7 +1859,7 @@ static int ipoib_parent_init(struct net_device *ndev)
 			priv->port);
 		return result;
 	}
-	priv->max_ib_mtu = ib_mtu_enum_to_int(attr.max_mtu);
+	priv->max_ib_mtu = rdma_mtu_from_attr(priv->ca, priv->port, &attr);
 
 	result = ib_query_pkey(priv->ca, priv->port, 0, &priv->pkey);
 	if (result) {
@@ -1899,6 +1900,7 @@ static int ipoib_ndo_init(struct net_device *ndev)
 {
 	struct ipoib_dev_priv *priv = ipoib_priv(ndev);
 	int rc;
+	struct rdma_netdev *rn = netdev_priv(ndev);
 
 	if (priv->parent) {
 		ipoib_child_init(ndev);
@@ -1911,6 +1913,7 @@ static int ipoib_ndo_init(struct net_device *ndev)
 	/* MTU will be reset when mcast join happens */
 	ndev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu);
 	priv->mcast_mtu = priv->admin_mtu = ndev->mtu;
+	rn->mtu = priv->mcast_mtu;
 	ndev->max_mtu = IPOIB_CM_MTU;
 
 	ndev->neigh_priv_len = sizeof(struct ipoib_neigh);
@@ -2072,9 +2075,17 @@ static const struct net_device_ops ipoib_netdev_ops_vf = {
 	.ndo_do_ioctl		 = ipoib_ioctl,
 };
 
+static const struct net_device_ops ipoib_netdev_default_pf = {
+	.ndo_init		 = ipoib_dev_init_default,
+	.ndo_uninit		 = ipoib_dev_uninit_default,
+	.ndo_open		 = ipoib_ib_dev_open_default,
+	.ndo_stop		 = ipoib_ib_dev_stop_default,
+};
+
 void ipoib_setup_common(struct net_device *dev)
 {
 	dev->header_ops		 = &ipoib_header_ops;
+	dev->netdev_ops          = &ipoib_netdev_default_pf;
 
 	ipoib_set_ethtool_ops(dev);
 
@@ -2124,13 +2135,6 @@ static void ipoib_build_priv(struct net_device *dev)
 	INIT_DELAYED_WORK(&priv->neigh_reap_task, ipoib_reap_neigh);
 }
 
-static const struct net_device_ops ipoib_netdev_default_pf = {
-	.ndo_init		 = ipoib_dev_init_default,
-	.ndo_uninit		 = ipoib_dev_uninit_default,
-	.ndo_open		 = ipoib_ib_dev_open_default,
-	.ndo_stop		 = ipoib_ib_dev_stop_default,
-};
-
 static struct net_device *ipoib_alloc_netdev(struct ib_device *hca, u8 port,
 					     const char *name)
 {
@@ -2168,7 +2172,6 @@ int ipoib_intf_init(struct ib_device *hca, u8 port, const char *name,
 		if (rc != -EOPNOTSUPP)
 			goto out;
 
-		dev->netdev_ops = &ipoib_netdev_default_pf;
 		rn->send = ipoib_send;
 		rn->attach_mcast = ipoib_mcast_attach;
 		rn->detach_mcast = ipoib_mcast_detach;
@@ -2514,7 +2517,7 @@ sysfs_failed:
 	return ERR_PTR(-ENOMEM);
 }
 
-static void ipoib_add_one(struct ib_device *device)
+static int ipoib_add_one(struct ib_device *device)
 {
 	struct list_head *dev_list;
 	struct net_device *dev;
@@ -2524,7 +2527,7 @@ static void ipoib_add_one(struct ib_device *device)
 
 	dev_list = kmalloc(sizeof(*dev_list), GFP_KERNEL);
 	if (!dev_list)
-		return;
+		return -ENOMEM;
 
 	INIT_LIST_HEAD(dev_list);
 
@@ -2541,10 +2544,11 @@ static void ipoib_add_one(struct ib_device *device)
 
 	if (!count) {
 		kfree(dev_list);
-		return;
+		return -EOPNOTSUPP;
 	}
 
 	ib_set_client_data(device, &ipoib_client, dev_list);
+	return 0;
 }
 
 static void ipoib_remove_one(struct ib_device *device, void *client_data)
@@ -2552,9 +2556,6 @@ static void ipoib_remove_one(struct ib_device *device, void *client_data)
 	struct ipoib_dev_priv *priv, *tmp, *cpriv, *tcpriv;
 	struct list_head *dev_list = client_data;
 
-	if (!dev_list)
-		return;
-
 	list_for_each_entry_safe(priv, tmp, dev_list, list) {
 		LIST_HEAD(head);
 		ipoib_parent_unregister_pre(priv->dev);