These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

6 files changed, 408 insertions, 139 deletions

diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib.h b/kernel/drivers/infiniband/ulp/ipoib/ipoib.h
index bd94b0a6e..3ede10309 100644
--- a/kernel/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -80,7 +80,7 @@ enum {
 	IPOIB_NUM_WC		  = 4,
 
 	IPOIB_MAX_PATH_REC_QUEUE  = 3,
-	IPOIB_MAX_MCAST_QUEUE	  = 3,
+	IPOIB_MAX_MCAST_QUEUE	  = 64,
 
 	IPOIB_FLAG_OPER_UP	  = 0,
 	IPOIB_FLAG_INITIALIZED	  = 1,
@@ -239,7 +239,7 @@ struct ipoib_cm_tx {
 	struct net_device   *dev;
 	struct ipoib_neigh  *neigh;
 	struct ipoib_path   *path;
-	struct ipoib_cm_tx_buf *tx_ring;
+	struct ipoib_tx_buf *tx_ring;
 	unsigned	     tx_head;
 	unsigned	     tx_tail;
 	unsigned long	     flags;
@@ -342,7 +342,6 @@ struct ipoib_dev_priv {
 	u16		  pkey;
 	u16		  pkey_index;
 	struct ib_pd	 *pd;
-	struct ib_mr	 *mr;
 	struct ib_cq	 *recv_cq;
 	struct ib_cq	 *send_cq;
 	struct ib_qp	 *qp;
@@ -361,7 +360,7 @@ struct ipoib_dev_priv {
 	unsigned	     tx_head;
 	unsigned	     tx_tail;
 	struct ib_sge	     tx_sge[MAX_SKB_FRAGS + 1];
-	struct ib_send_wr    tx_wr;
+	struct ib_ud_wr      tx_wr;
 	unsigned	     tx_outstanding;
 	struct ib_wc	     send_wc[MAX_SEND_CQE];
 
@@ -496,6 +495,7 @@ void ipoib_dev_cleanup(struct net_device *dev);
 void ipoib_mcast_join_task(struct work_struct *work);
 void ipoib_mcast_carrier_on_task(struct work_struct *work);
 void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb);
+void ipoib_mcast_free(struct ipoib_mcast *mc);
 
 void ipoib_mcast_restart_task(struct work_struct *work);
 int ipoib_mcast_start_thread(struct net_device *dev);
@@ -504,6 +504,33 @@ int ipoib_mcast_stop_thread(struct net_device *dev);
 void ipoib_mcast_dev_down(struct net_device *dev);
 void ipoib_mcast_dev_flush(struct net_device *dev);
 
+int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req);
+void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
+			struct ipoib_tx_buf *tx_req);
+
+static inline void ipoib_build_sge(struct ipoib_dev_priv *priv,
+				   struct ipoib_tx_buf *tx_req)
+{
+	int i, off;
+	struct sk_buff *skb = tx_req->skb;
+	skb_frag_t *frags = skb_shinfo(skb)->frags;
+	int nr_frags = skb_shinfo(skb)->nr_frags;
+	u64 *mapping = tx_req->mapping;
+
+	if (skb_headlen(skb)) {
+		priv->tx_sge[0].addr         = mapping[0];
+		priv->tx_sge[0].length       = skb_headlen(skb);
+		off = 1;
+	} else
+		off = 0;
+
+	for (i = 0; i < nr_frags; ++i) {
+		priv->tx_sge[i + off].addr = mapping[i + off];
+		priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
+	}
+	priv->tx_wr.wr.num_sge	     = nr_frags + off;
+}
+
 #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
 struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
 int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
@@ -522,6 +549,8 @@ void ipoib_path_iter_read(struct ipoib_path_iter *iter,
 
 int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
 		       union ib_gid *mgid, int set_qkey);
+int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast);
+struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid);
 
 int ipoib_init_qp(struct net_device *dev);
 int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/kernel/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index cf32a778e..3ae9726ef 100644
--- a/kernel/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -332,7 +332,7 @@ static void ipoib_cm_init_rx_wr(struct net_device *dev,
 	int i;
 
 	for (i = 0; i < priv->cm.num_frags; ++i)
-		sge[i].lkey = priv->mr->lkey;
+		sge[i].lkey = priv->pd->local_dma_lkey;
 
 	sge[0].length = IPOIB_CM_HEAD_SIZE;
 	for (i = 1; i < priv->cm.num_frags; ++i)
@@ -694,24 +694,21 @@ repost:
 static inline int post_send(struct ipoib_dev_priv *priv,
 			    struct ipoib_cm_tx *tx,
 			    unsigned int wr_id,
-			    u64 addr, int len)
+			    struct ipoib_tx_buf *tx_req)
 {
 	struct ib_send_wr *bad_wr;
 
-	priv->tx_sge[0].addr          = addr;
-	priv->tx_sge[0].length        = len;
+	ipoib_build_sge(priv, tx_req);
 
-	priv->tx_wr.num_sge	= 1;
-	priv->tx_wr.wr_id	= wr_id | IPOIB_OP_CM;
+	priv->tx_wr.wr.wr_id	= wr_id | IPOIB_OP_CM;
 
-	return ib_post_send(tx->qp, &priv->tx_wr, &bad_wr);
+	return ib_post_send(tx->qp, &priv->tx_wr.wr, &bad_wr);
 }
 
 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
-	struct ipoib_cm_tx_buf *tx_req;
-	u64 addr;
+	struct ipoib_tx_buf *tx_req;
 	int rc;
 
 	if (unlikely(skb->len > tx->mtu)) {
@@ -735,24 +732,21 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_
 	 */
 	tx_req = &tx->tx_ring[tx->tx_head & (ipoib_sendq_size - 1)];
 	tx_req->skb = skb;
-	addr = ib_dma_map_single(priv->ca, skb->data, skb->len, DMA_TO_DEVICE);
-	if (unlikely(ib_dma_mapping_error(priv->ca, addr))) {
+
+	if (unlikely(ipoib_dma_map_tx(priv->ca, tx_req))) {
 		++dev->stats.tx_errors;
 		dev_kfree_skb_any(skb);
 		return;
 	}
 
-	tx_req->mapping = addr;
-
 	skb_orphan(skb);
 	skb_dst_drop(skb);
 
-	rc = post_send(priv, tx, tx->tx_head & (ipoib_sendq_size - 1),
-		       addr, skb->len);
+	rc = post_send(priv, tx, tx->tx_head & (ipoib_sendq_size - 1), tx_req);
 	if (unlikely(rc)) {
 		ipoib_warn(priv, "post_send failed, error %d\n", rc);
 		++dev->stats.tx_errors;
-		ib_dma_unmap_single(priv->ca, addr, skb->len, DMA_TO_DEVICE);
+		ipoib_dma_unmap_tx(priv, tx_req);
 		dev_kfree_skb_any(skb);
 	} else {
 		dev->trans_start = jiffies;
@@ -777,7 +771,7 @@ void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
 	struct ipoib_cm_tx *tx = wc->qp->qp_context;
 	unsigned int wr_id = wc->wr_id & ~IPOIB_OP_CM;
-	struct ipoib_cm_tx_buf *tx_req;
+	struct ipoib_tx_buf *tx_req;
 	unsigned long flags;
 
 	ipoib_dbg_data(priv, "cm send completion: id %d, status: %d\n",
@@ -791,7 +785,7 @@ void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 
 	tx_req = &tx->tx_ring[wr_id];
 
-	ib_dma_unmap_single(priv->ca, tx_req->mapping, tx_req->skb->len, DMA_TO_DEVICE);
+	ipoib_dma_unmap_tx(priv, tx_req);
 
 	/* FIXME: is this right? Shouldn't we only increment on success? */
 	++dev->stats.tx_packets;
@@ -854,7 +848,7 @@ int ipoib_cm_dev_open(struct net_device *dev)
 	}
 
 	ret = ib_cm_listen(priv->cm.id, cpu_to_be64(IPOIB_CM_IETF_ID | priv->qp->qp_num),
-			   0, NULL);
+			   0);
 	if (ret) {
 		printk(KERN_WARNING "%s: failed to listen on ID 0x%llx\n", priv->ca->name,
 		       IPOIB_CM_IETF_ID | priv->qp->qp_num);
@@ -1036,6 +1030,9 @@ static struct ib_qp *ipoib_cm_create_tx_qp(struct net_device *dev, struct ipoib_
 
 	struct ib_qp *tx_qp;
 
+	if (dev->features & NETIF_F_SG)
+		attr.cap.max_send_sge = MAX_SKB_FRAGS + 1;
+
 	tx_qp = ib_create_qp(priv->pd, &attr);
 	if (PTR_ERR(tx_qp) == -EINVAL) {
 		ipoib_warn(priv, "can't use GFP_NOIO for QPs on device %s, using GFP_KERNEL\n",
@@ -1170,7 +1167,7 @@ err_tx:
 static void ipoib_cm_tx_destroy(struct ipoib_cm_tx *p)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(p->dev);
-	struct ipoib_cm_tx_buf *tx_req;
+	struct ipoib_tx_buf *tx_req;
 	unsigned long begin;
 
 	ipoib_dbg(priv, "Destroy active connection 0x%x head 0x%x tail 0x%x\n",
@@ -1197,8 +1194,7 @@ timeout:
 
 	while ((int) p->tx_tail - (int) p->tx_head < 0) {
 		tx_req = &p->tx_ring[p->tx_tail & (ipoib_sendq_size - 1)];
-		ib_dma_unmap_single(priv->ca, tx_req->mapping, tx_req->skb->len,
-				    DMA_TO_DEVICE);
+		ipoib_dma_unmap_tx(priv, tx_req);
 		dev_kfree_skb_any(tx_req->skb);
 		++p->tx_tail;
 		netif_tx_lock_bh(p->dev);
@@ -1455,7 +1451,6 @@ static void ipoib_cm_stale_task(struct work_struct *work)
 	spin_unlock_irq(&priv->lock);
 }
 
-
 static ssize_t show_mode(struct device *d, struct device_attribute *attr,
 			 char *buf)
 {
diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/kernel/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 63b92cbb2..5ea0c1407 100644
--- a/kernel/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -263,8 +263,7 @@ repost:
 			   "for buf %d\n", wr_id);
 }
 
-static int ipoib_dma_map_tx(struct ib_device *ca,
-			    struct ipoib_tx_buf *tx_req)
+int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req)
 {
 	struct sk_buff *skb = tx_req->skb;
 	u64 *mapping = tx_req->mapping;
@@ -305,8 +304,8 @@ partial_error:
 	return -EIO;
 }
 
-static void ipoib_dma_unmap_tx(struct ib_device *ca,
-			       struct ipoib_tx_buf *tx_req)
+void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv,
+			struct ipoib_tx_buf *tx_req)
 {
 	struct sk_buff *skb = tx_req->skb;
 	u64 *mapping = tx_req->mapping;
@@ -314,7 +313,8 @@ static void ipoib_dma_unmap_tx(struct ib_device *ca,
 	int off;
 
 	if (skb_headlen(skb)) {
-		ib_dma_unmap_single(ca, mapping[0], skb_headlen(skb), DMA_TO_DEVICE);
+		ib_dma_unmap_single(priv->ca, mapping[0], skb_headlen(skb),
+				    DMA_TO_DEVICE);
 		off = 1;
 	} else
 		off = 0;
@@ -322,8 +322,8 @@ static void ipoib_dma_unmap_tx(struct ib_device *ca,
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; ++i) {
 		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
 
-		ib_dma_unmap_page(ca, mapping[i + off], skb_frag_size(frag),
-				  DMA_TO_DEVICE);
+		ib_dma_unmap_page(priv->ca, mapping[i + off],
+				  skb_frag_size(frag), DMA_TO_DEVICE);
 	}
 }
 
@@ -389,7 +389,7 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 
 	tx_req = &priv->tx_ring[wr_id];
 
-	ipoib_dma_unmap_tx(priv->ca, tx_req);
+	ipoib_dma_unmap_tx(priv, tx_req);
 
 	++dev->stats.tx_packets;
 	dev->stats.tx_bytes += tx_req->skb->len;
@@ -514,37 +514,23 @@ static inline int post_send(struct ipoib_dev_priv *priv,
 			    void *head, int hlen)
 {
 	struct ib_send_wr *bad_wr;
-	int i, off;
 	struct sk_buff *skb = tx_req->skb;
-	skb_frag_t *frags = skb_shinfo(skb)->frags;
-	int nr_frags = skb_shinfo(skb)->nr_frags;
-	u64 *mapping = tx_req->mapping;
 
-	if (skb_headlen(skb)) {
-		priv->tx_sge[0].addr         = mapping[0];
-		priv->tx_sge[0].length       = skb_headlen(skb);
-		off = 1;
-	} else
-		off = 0;
+	ipoib_build_sge(priv, tx_req);
 
-	for (i = 0; i < nr_frags; ++i) {
-		priv->tx_sge[i + off].addr = mapping[i + off];
-		priv->tx_sge[i + off].length = skb_frag_size(&frags[i]);
-	}
-	priv->tx_wr.num_sge	     = nr_frags + off;
-	priv->tx_wr.wr_id 	     = wr_id;
-	priv->tx_wr.wr.ud.remote_qpn = qpn;
-	priv->tx_wr.wr.ud.ah 	     = address;
+	priv->tx_wr.wr.wr_id	= wr_id;
+	priv->tx_wr.remote_qpn	= qpn;
+	priv->tx_wr.ah		= address;
 
 	if (head) {
-		priv->tx_wr.wr.ud.mss	 = skb_shinfo(skb)->gso_size;
-		priv->tx_wr.wr.ud.header = head;
-		priv->tx_wr.wr.ud.hlen	 = hlen;
-		priv->tx_wr.opcode	 = IB_WR_LSO;
+		priv->tx_wr.mss		= skb_shinfo(skb)->gso_size;
+		priv->tx_wr.header	= head;
+		priv->tx_wr.hlen	= hlen;
+		priv->tx_wr.wr.opcode	= IB_WR_LSO;
 	} else
-		priv->tx_wr.opcode	 = IB_WR_SEND;
+		priv->tx_wr.wr.opcode	= IB_WR_SEND;
 
-	return ib_post_send(priv->qp, &priv->tx_wr, &bad_wr);
+	return ib_post_send(priv->qp, &priv->tx_wr.wr, &bad_wr);
 }
 
 void ipoib_send(struct net_device *dev, struct sk_buff *skb,
@@ -597,9 +583,9 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 	}
 
 	if (skb->ip_summed == CHECKSUM_PARTIAL)
-		priv->tx_wr.send_flags |= IB_SEND_IP_CSUM;
+		priv->tx_wr.wr.send_flags |= IB_SEND_IP_CSUM;
 	else
-		priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;
+		priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM;
 
 	if (++priv->tx_outstanding == ipoib_sendq_size) {
 		ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n");
@@ -617,7 +603,7 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 		ipoib_warn(priv, "post_send failed, error %d\n", rc);
 		++dev->stats.tx_errors;
 		--priv->tx_outstanding;
-		ipoib_dma_unmap_tx(priv->ca, tx_req);
+		ipoib_dma_unmap_tx(priv, tx_req);
 		dev_kfree_skb_any(skb);
 		if (netif_queue_stopped(dev))
 			netif_wake_queue(dev);
@@ -868,7 +854,7 @@ int ipoib_ib_dev_stop(struct net_device *dev)
 			while ((int) priv->tx_tail - (int) priv->tx_head < 0) {
 				tx_req = &priv->tx_ring[priv->tx_tail &
 							(ipoib_sendq_size - 1)];
-				ipoib_dma_unmap_tx(priv->ca, tx_req);
+				ipoib_dma_unmap_tx(priv, tx_req);
 				dev_kfree_skb_any(tx_req->skb);
 				++priv->tx_tail;
 				--priv->tx_outstanding;
@@ -985,20 +971,21 @@ static inline int update_child_pkey(struct ipoib_dev_priv *priv)
 }
 
 static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv,
-				enum ipoib_flush_level level)
+				enum ipoib_flush_level level,
+				int nesting)
 {
 	struct ipoib_dev_priv *cpriv;
 	struct net_device *dev = priv->dev;
 	int result;
 
-	down_read(&priv->vlan_rwsem);
+	down_read_nested(&priv->vlan_rwsem, nesting);
 
 	/*
 	 * Flush any child interfaces too -- they might be up even if
 	 * the parent is down.
 	 */
 	list_for_each_entry(cpriv, &priv->child_intfs, list)
-		__ipoib_ib_dev_flush(cpriv, level);
+		__ipoib_ib_dev_flush(cpriv, level, nesting + 1);
 
 	up_read(&priv->vlan_rwsem);
 
@@ -1076,7 +1063,7 @@ void ipoib_ib_dev_flush_light(struct work_struct *work)
 	struct ipoib_dev_priv *priv =
 		container_of(work, struct ipoib_dev_priv, flush_light);
 
-	__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_LIGHT);
+	__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_LIGHT, 0);
 }
 
 void ipoib_ib_dev_flush_normal(struct work_struct *work)
@@ -1084,7 +1071,7 @@ void ipoib_ib_dev_flush_normal(struct work_struct *work)
 	struct ipoib_dev_priv *priv =
 		container_of(work, struct ipoib_dev_priv, flush_normal);
 
-	__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_NORMAL);
+	__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_NORMAL, 0);
 }
 
 void ipoib_ib_dev_flush_heavy(struct work_struct *work)
@@ -1092,7 +1079,7 @@ void ipoib_ib_dev_flush_heavy(struct work_struct *work)
 	struct ipoib_dev_priv *priv =
 		container_of(work, struct ipoib_dev_priv, flush_heavy);
 
-	__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_HEAVY);
+	__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_HEAVY, 0);
 }
 
 void ipoib_ib_dev_cleanup(struct net_device *dev)
diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib_main.c b/kernel/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 9e1b203d7..7d3281866 100644
--- a/kernel/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -48,6 +48,9 @@
 
 #include <linux/jhash.h>
 #include <net/arp.h>
+#include <net/addrconf.h>
+#include <linux/inetdevice.h>
+#include <rdma/ib_cache.h>
 
 #define DRV_VERSION "1.0.0"
 
@@ -89,13 +92,18 @@ struct workqueue_struct *ipoib_workqueue;
 struct ib_sa_client ipoib_sa_client;
 
 static void ipoib_add_one(struct ib_device *device);
-static void ipoib_remove_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(
+		struct ib_device *dev, u8 port, u16 pkey,
+		const union ib_gid *gid, const struct sockaddr *addr,
+		void *client_data);
 
 static struct ib_client ipoib_client = {
 	.name   = "ipoib",
 	.add    = ipoib_add_one,
-	.remove = ipoib_remove_one
+	.remove = ipoib_remove_one,
+	.get_net_dev_by_params = ipoib_get_net_dev_by_params,
 };
 
 int ipoib_open(struct net_device *dev)
@@ -190,7 +198,7 @@ static netdev_features_t ipoib_fix_features(struct net_device *dev, netdev_featu
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
 
 	if (test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags))
-		features &= ~(NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
+		features &= ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
 
 	return features;
 }
@@ -222,6 +230,225 @@ static int ipoib_change_mtu(struct net_device *dev, int new_mtu)
 	return 0;
 }
 
+/* Called with an RCU read lock taken */
+static bool ipoib_is_dev_match_addr_rcu(const struct sockaddr *addr,
+					struct net_device *dev)
+{
+	struct net *net = dev_net(dev);
+	struct in_device *in_dev;
+	struct sockaddr_in *addr_in = (struct sockaddr_in *)addr;
+	struct sockaddr_in6 *addr_in6 = (struct sockaddr_in6 *)addr;
+	__be32 ret_addr;
+
+	switch (addr->sa_family) {
+	case AF_INET:
+		in_dev = in_dev_get(dev);
+		if (!in_dev)
+			return false;
+
+		ret_addr = inet_confirm_addr(net, in_dev, 0,
+					     addr_in->sin_addr.s_addr,
+					     RT_SCOPE_HOST);
+		in_dev_put(in_dev);
+		if (ret_addr)
+			return true;
+
+		break;
+	case AF_INET6:
+		if (IS_ENABLED(CONFIG_IPV6) &&
+		    ipv6_chk_addr(net, &addr_in6->sin6_addr, dev, 1))
+			return true;
+
+		break;
+	}
+	return false;
+}
+
+/**
+ * Find the master net_device on top of the given net_device.
+ * @dev: base IPoIB net_device
+ *
+ * Returns the master net_device with a reference held, or the same net_device
+ * if no master exists.
+ */
+static struct net_device *ipoib_get_master_net_dev(struct net_device *dev)
+{
+	struct net_device *master;
+
+	rcu_read_lock();
+	master = netdev_master_upper_dev_get_rcu(dev);
+	if (master)
+		dev_hold(master);
+	rcu_read_unlock();
+
+	if (master)
+		return master;
+
+	dev_hold(dev);
+	return dev;
+}
+
+/**
+ * Find a net_device matching the given address, which is an upper device of
+ * the given net_device.
+ * @addr: IP address to look for.
+ * @dev: base IPoIB net_device
+ *
+ * If found, returns the net_device with a reference held. Otherwise return
+ * NULL.
+ */
+static struct net_device *ipoib_get_net_dev_match_addr(
+		const struct sockaddr *addr, struct net_device *dev)
+{
+	struct net_device *upper,
+			  *result = NULL;
+	struct list_head *iter;
+
+	rcu_read_lock();
+	if (ipoib_is_dev_match_addr_rcu(addr, dev)) {
+		dev_hold(dev);
+		result = dev;
+		goto out;
+	}
+
+	netdev_for_each_all_upper_dev_rcu(dev, upper, iter) {
+		if (ipoib_is_dev_match_addr_rcu(addr, upper)) {
+			dev_hold(upper);
+			result = upper;
+			break;
+		}
+	}
+out:
+	rcu_read_unlock();
+	return result;
+}
+
+/* returns the number of IPoIB netdevs on top a given ipoib device matching a
+ * pkey_index and address, if one exists.
+ *
+ * @found_net_dev: contains a matching net_device if the return value >= 1,
+ * with a reference held. */
+static int ipoib_match_gid_pkey_addr(struct ipoib_dev_priv *priv,
+				     const union ib_gid *gid,
+				     u16 pkey_index,
+				     const struct sockaddr *addr,
+				     int nesting,
+				     struct net_device **found_net_dev)
+{
+	struct ipoib_dev_priv *child_priv;
+	struct net_device *net_dev = NULL;
+	int matches = 0;
+
+	if (priv->pkey_index == pkey_index &&
+	    (!gid || !memcmp(gid, &priv->local_gid, sizeof(*gid)))) {
+		if (!addr) {
+			net_dev = ipoib_get_master_net_dev(priv->dev);
+		} else {
+			/* Verify the net_device matches the IP address, as
+			 * IPoIB child devices currently share a GID. */
+			net_dev = ipoib_get_net_dev_match_addr(addr, priv->dev);
+		}
+		if (net_dev) {
+			if (!*found_net_dev)
+				*found_net_dev = net_dev;
+			else
+				dev_put(net_dev);
+			++matches;
+		}
+	}
+
+	/* Check child interfaces */
+	down_read_nested(&priv->vlan_rwsem, nesting);
+	list_for_each_entry(child_priv, &priv->child_intfs, list) {
+		matches += ipoib_match_gid_pkey_addr(child_priv, gid,
+						    pkey_index, addr,
+						    nesting + 1,
+						    found_net_dev);
+		if (matches > 1)
+			break;
+	}
+	up_read(&priv->vlan_rwsem);
+
+	return matches;
+}
+
+/* Returns the number of matching net_devs found (between 0 and 2). Also
+ * return the matching net_device in the @net_dev parameter, holding a
+ * reference to the net_device, if the number of matches >= 1 */
+static int __ipoib_get_net_dev_by_params(struct list_head *dev_list, u8 port,
+					 u16 pkey_index,
+					 const union ib_gid *gid,
+					 const struct sockaddr *addr,
+					 struct net_device **net_dev)
+{
+	struct ipoib_dev_priv *priv;
+	int matches = 0;
+
+	*net_dev = NULL;
+
+	list_for_each_entry(priv, dev_list, list) {
+		if (priv->port != port)
+			continue;
+
+		matches += ipoib_match_gid_pkey_addr(priv, gid, pkey_index,
+						     addr, 0, net_dev);
+		if (matches > 1)
+			break;
+	}
+
+	return matches;
+}
+
+static struct net_device *ipoib_get_net_dev_by_params(
+		struct ib_device *dev, u8 port, u16 pkey,
+		const union ib_gid *gid, const struct sockaddr *addr,
+		void *client_data)
+{
+	struct net_device *net_dev;
+	struct list_head *dev_list = client_data;
+	u16 pkey_index;
+	int matches;
+	int ret;
+
+	if (!rdma_protocol_ib(dev, port))
+		return NULL;
+
+	ret = ib_find_cached_pkey(dev, port, pkey, &pkey_index);
+	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);
+
+	switch (matches) {
+	case 0:
+		return NULL;
+	case 1:
+		return net_dev;
+	}
+
+	dev_put(net_dev);
+
+	/* Couldn't find a unique device with L2 parameters only. Use L3
+	 * address to uniquely match the net device */
+	matches = __ipoib_get_net_dev_by_params(dev_list, port, pkey_index,
+						gid, addr, &net_dev);
+	switch (matches) {
+	case 0:
+		return NULL;
+	default:
+		dev_warn_ratelimited(&dev->dev,
+				     "duplicate IP address detected\n");
+		/* Fall through */
+	case 1:
+		return net_dev;
+	}
+}
+
 int ipoib_set_mode(struct net_device *dev, const char *buf)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
@@ -232,8 +459,9 @@ int ipoib_set_mode(struct net_device *dev, const char *buf)
 		ipoib_warn(priv, "enabling connected mode "
 			   "will cause multicast packet drops\n");
 		netdev_update_features(dev);
+		dev_set_mtu(dev, ipoib_cm_max_mtu(dev));
 		rtnl_unlock();
-		priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;
+		priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM;
 
 		ipoib_flush_paths(dev);
 		rtnl_lock();
@@ -921,6 +1149,9 @@ static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv)
 	unsigned long dt;
 	unsigned long flags;
 	int i;
+	LIST_HEAD(remove_list);
+	struct ipoib_mcast *mcast, *tmcast;
+	struct net_device *dev = priv->dev;
 
 	if (test_bit(IPOIB_STOP_NEIGH_GC, &priv->flags))
 		return;
@@ -948,6 +1179,19 @@ static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv)
 							  lockdep_is_held(&priv->lock))) != NULL) {
 			/* was the neigh idle for two GC periods */
 			if (time_after(neigh_obsolete, neigh->alive)) {
+				u8 *mgid = neigh->daddr + 4;
+
+				/* Is this multicast ? */
+				if (*mgid == 0xff) {
+					mcast = __ipoib_mcast_find(dev, mgid);
+
+					if (mcast && test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
+						list_del(&mcast->list);
+						rb_erase(&mcast->rb_node, &priv->multicast_tree);
+						list_add_tail(&mcast->list, &remove_list);
+					}
+				}
+
 				rcu_assign_pointer(*np,
 						   rcu_dereference_protected(neigh->hnext,
 									     lockdep_is_held(&priv->lock)));
@@ -963,6 +1207,10 @@ static void __ipoib_reap_neigh(struct ipoib_dev_priv *priv)
 
 out_unlock:
 	spin_unlock_irqrestore(&priv->lock, flags);
+	list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
+		ipoib_mcast_leave(dev, mcast);
+		ipoib_mcast_free(mcast);
+	}
 }
 
 static void ipoib_reap_neigh(struct work_struct *work)
@@ -1128,7 +1376,7 @@ static int ipoib_neigh_hash_init(struct ipoib_dev_priv *priv)
 {
 	struct ipoib_neigh_table *ntbl = &priv->ntbl;
 	struct ipoib_neigh_hash *htbl;
-	struct ipoib_neigh **buckets;
+	struct ipoib_neigh __rcu **buckets;
 	u32 size;
 
 	clear_bit(IPOIB_NEIGH_TBL_FLUSH, &priv->flags);
@@ -1146,7 +1394,7 @@ static int ipoib_neigh_hash_init(struct ipoib_dev_priv *priv)
 	htbl->size = size;
 	htbl->mask = (size - 1);
 	htbl->buckets = buckets;
-	ntbl->htbl = htbl;
+	RCU_INIT_POINTER(ntbl->htbl, htbl);
 	htbl->ntbl = ntbl;
 	atomic_set(&ntbl->entries, 0);
 
@@ -1577,7 +1825,8 @@ static struct net_device *ipoib_add_port(const char *format,
 	SET_NETDEV_DEV(priv->dev, hca->dma_device);
 	priv->dev->dev_id = port - 1;
 
-	if (!ib_query_port(hca, port, &attr))
+	result = ib_query_port(hca, port, &attr);
+	if (!result)
 		priv->max_ib_mtu = ib_mtu_enum_to_int(attr.max_mtu);
 	else {
 		printk(KERN_WARNING "%s: ib_query_port %d failed\n",
@@ -1598,7 +1847,8 @@ static struct net_device *ipoib_add_port(const char *format,
 		goto device_init_failed;
 	}
 
-	if (ipoib_set_dev_features(priv, hca))
+	result = ipoib_set_dev_features(priv, hca);
+	if (result)
 		goto device_init_failed;
 
 	/*
@@ -1610,7 +1860,7 @@ static struct net_device *ipoib_add_port(const char *format,
 	priv->dev->broadcast[8] = priv->pkey >> 8;
 	priv->dev->broadcast[9] = priv->pkey & 0xff;
 
-	result = ib_query_gid(hca, port, 0, &priv->local_gid);
+	result = ib_query_gid(hca, port, 0, &priv->local_gid, NULL);
 	if (result) {
 		printk(KERN_WARNING "%s: ib_query_gid port %d failed (ret = %d)\n",
 		       hca->name, port, result);
@@ -1684,10 +1934,8 @@ static void ipoib_add_one(struct ib_device *device)
 	struct list_head *dev_list;
 	struct net_device *dev;
 	struct ipoib_dev_priv *priv;
-	int s, e, p;
-
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
+	int p;
+	int count = 0;
 
 	dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
 	if (!dev_list)
@@ -1695,36 +1943,30 @@ static void ipoib_add_one(struct ib_device *device)
 
 	INIT_LIST_HEAD(dev_list);
 
-	if (device->node_type == RDMA_NODE_IB_SWITCH) {
-		s = 0;
-		e = 0;
-	} else {
-		s = 1;
-		e = device->phys_port_cnt;
-	}
-
-	for (p = s; p <= e; ++p) {
-		if (rdma_port_get_link_layer(device, p) != IB_LINK_LAYER_INFINIBAND)
+	for (p = rdma_start_port(device); p <= rdma_end_port(device); ++p) {
+		if (!rdma_protocol_ib(device, p))
 			continue;
 		dev = ipoib_add_port("ib%d", device, p);
 		if (!IS_ERR(dev)) {
 			priv = netdev_priv(dev);
 			list_add_tail(&priv->list, dev_list);
+			count++;
 		}
 	}
 
+	if (!count) {
+		kfree(dev_list);
+		return;
+	}
+
 	ib_set_client_data(device, &ipoib_client, dev_list);
 }
 
-static void ipoib_remove_one(struct ib_device *device)
+static void ipoib_remove_one(struct ib_device *device, void *client_data)
 {
 	struct ipoib_dev_priv *priv, *tmp;
-	struct list_head *dev_list;
-
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
+	struct list_head *dev_list = client_data;
 
-	dev_list = ib_get_client_data(device, &ipoib_client);
 	if (!dev_list)
 		return;
 
diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/kernel/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index 140c94ce7..6dcef673d 100644
--- a/kernel/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -106,7 +106,7 @@ static void __ipoib_mcast_schedule_join_thread(struct ipoib_dev_priv *priv,
 		queue_delayed_work(priv->wq, &priv->mcast_task, 0);
 }
 
-static void ipoib_mcast_free(struct ipoib_mcast *mcast)
+void ipoib_mcast_free(struct ipoib_mcast *mcast)
 {
 	struct net_device *dev = mcast->dev;
 	int tx_dropped = 0;
@@ -153,7 +153,7 @@ static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev,
 	return mcast;
 }
 
-static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid)
+struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
 	struct rb_node *n = priv->multicast_tree.rb_node;
@@ -245,7 +245,7 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
 
 		priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey);
 		spin_unlock_irq(&priv->lock);
-		priv->tx_wr.wr.ud.remote_qkey = priv->qkey;
+		priv->tx_wr.remote_qkey = priv->qkey;
 		set_qkey = 1;
 	}
 
@@ -393,8 +393,13 @@ static int ipoib_mcast_join_complete(int status,
 			goto out_locked;
 		}
 	} else {
-		if (mcast->logcount++ < 20) {
-			if (status == -ETIMEDOUT || status == -EAGAIN) {
+		bool silent_fail =
+		    test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) &&
+		    status == -EINVAL;
+
+		if (mcast->logcount < 20) {
+			if (status == -ETIMEDOUT || status == -EAGAIN ||
+			    silent_fail) {
 				ipoib_dbg_mcast(priv, "%smulticast join failed for %pI6, status %d\n",
 						test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) ? "sendonly " : "",
 						mcast->mcmember.mgid.raw, status);
@@ -403,6 +408,9 @@ static int ipoib_mcast_join_complete(int status,
 						test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) ? "sendonly " : "",
 					   mcast->mcmember.mgid.raw, status);
 			}
+
+			if (!silent_fail)
+				mcast->logcount++;
 		}
 
 		if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags) &&
@@ -448,8 +456,7 @@ out_locked:
 	return status;
 }
 
-static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast,
-			     int create)
+static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
 	struct ib_sa_multicast *multicast;
@@ -471,7 +478,14 @@ static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast,
 		IB_SA_MCMEMBER_REC_PKEY		|
 		IB_SA_MCMEMBER_REC_JOIN_STATE;
 
-	if (create) {
+	if (mcast != priv->broadcast) {
+		/*
+		 * RFC 4391:
+		 *  The MGID MUST use the same P_Key, Q_Key, SL, MTU,
+		 *  and HopLimit as those used in the broadcast-GID.  The rest
+		 *  of attributes SHOULD follow the values used in the
+		 *  broadcast-GID as well.
+		 */
 		comp_mask |=
 			IB_SA_MCMEMBER_REC_QKEY			|
 			IB_SA_MCMEMBER_REC_MTU_SELECTOR		|
@@ -492,6 +506,24 @@ static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast,
 		rec.sl		  = priv->broadcast->mcmember.sl;
 		rec.flow_label	  = priv->broadcast->mcmember.flow_label;
 		rec.hop_limit	  = priv->broadcast->mcmember.hop_limit;
+
+		/*
+		 * Send-only IB Multicast joins do not work at the core
+		 * IB layer yet, so we can't use them here.  However,
+		 * we are emulating an Ethernet multicast send, which
+		 * does not require a multicast subscription and will
+		 * still send properly.  The most appropriate thing to
+		 * do is to create the group if it doesn't exist as that
+		 * most closely emulates the behavior, from a user space
+		 * application perspecitive, of Ethernet multicast
+		 * operation.  For now, we do a full join, maybe later
+		 * when the core IB layers support send only joins we
+		 * will use them.
+		 */
+#if 0
+		if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags))
+			rec.join_state = 4;
+#endif
 	}
 
 	multicast = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, priv->port,
@@ -517,7 +549,6 @@ void ipoib_mcast_join_task(struct work_struct *work)
 	struct ib_port_attr port_attr;
 	unsigned long delay_until = 0;
 	struct ipoib_mcast *mcast = NULL;
-	int create = 1;
 
 	if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags))
 		return;
@@ -530,7 +561,7 @@ void ipoib_mcast_join_task(struct work_struct *work)
 	}
 	priv->local_lid = port_attr.lid;
 
-	if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid))
+	if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid, NULL))
 		ipoib_warn(priv, "ib_query_gid() failed\n");
 	else
 		memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid));
@@ -566,7 +597,6 @@ void ipoib_mcast_join_task(struct work_struct *work)
 		if (IS_ERR_OR_NULL(priv->broadcast->mc) &&
 		    !test_bit(IPOIB_MCAST_FLAG_BUSY, &priv->broadcast->flags)) {
 			mcast = priv->broadcast;
-			create = 0;
 			if (mcast->backoff > 1 &&
 			    time_before(jiffies, mcast->delay_until)) {
 				delay_until = mcast->delay_until;
@@ -590,12 +620,8 @@ void ipoib_mcast_join_task(struct work_struct *work)
 				/* Found the next unjoined group */
 				init_completion(&mcast->done);
 				set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags);
-				if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags))
-					create = 0;
-				else
-					create = 1;
 				spin_unlock_irq(&priv->lock);
-				ipoib_mcast_join(dev, mcast, create);
+				ipoib_mcast_join(dev, mcast);
 				spin_lock_irq(&priv->lock);
 			} else if (!delay_until ||
 				 time_before(mcast->delay_until, delay_until))
@@ -618,7 +644,7 @@ out:
 	}
 	spin_unlock_irq(&priv->lock);
 	if (mcast)
-		ipoib_mcast_join(dev, mcast, create);
+		ipoib_mcast_join(dev, mcast);
 }
 
 int ipoib_mcast_start_thread(struct net_device *dev)
@@ -651,7 +677,7 @@ int ipoib_mcast_stop_thread(struct net_device *dev)
 	return 0;
 }
 
-static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast)
+int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
 	int ret = 0;
diff --git a/kernel/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/kernel/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
index 2d13fd08c..d48c5bae7 100644
--- a/kernel/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
+++ b/kernel/drivers/infiniband/ulp/ipoib/ipoib_verbs.c
@@ -141,6 +141,7 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
 		.sq_sig_type = IB_SIGNAL_ALL_WR,
 		.qp_type     = IB_QPT_UD
 	};
+	struct ib_cq_init_attr cq_attr = {};
 
 	int ret, size;
 	int i;
@@ -151,12 +152,6 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
 		return -ENODEV;
 	}
 
-	priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE);
-	if (IS_ERR(priv->mr)) {
-		printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name);
-		goto out_free_pd;
-	}
-
 	/*
 	 * the various IPoIB tasks assume they will never race against
 	 * themselves, so always use a single thread workqueue
@@ -164,7 +159,7 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
 	priv->wq = create_singlethread_workqueue("ipoib_wq");
 	if (!priv->wq) {
 		printk(KERN_WARNING "ipoib: failed to allocate device WQ\n");
-		goto out_free_mr;
+		goto out_free_pd;
 	}
 
 	size = ipoib_recvq_size + 1;
@@ -179,14 +174,17 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
 		if (ret != -ENOSYS)
 			goto out_free_wq;
 
-	priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size, 0);
+	cq_attr.cqe = size;
+	priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL,
+				     dev, &cq_attr);
 	if (IS_ERR(priv->recv_cq)) {
 		printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name);
 		goto out_cm_dev_cleanup;
 	}
 
+	cq_attr.cqe = ipoib_sendq_size;
 	priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL,
-				     dev, ipoib_sendq_size, 0);
+				     dev, &cq_attr);
 	if (IS_ERR(priv->send_cq)) {
 		printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name);
 		goto out_free_recv_cq;
@@ -221,13 +219,13 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
 	priv->dev->dev_addr[3] = (priv->qp->qp_num      ) & 0xff;
 
 	for (i = 0; i < MAX_SKB_FRAGS + 1; ++i)
-		priv->tx_sge[i].lkey = priv->mr->lkey;
+		priv->tx_sge[i].lkey = priv->pd->local_dma_lkey;
 
-	priv->tx_wr.opcode	= IB_WR_SEND;
-	priv->tx_wr.sg_list	= priv->tx_sge;
-	priv->tx_wr.send_flags	= IB_SEND_SIGNALED;
+	priv->tx_wr.wr.opcode		= IB_WR_SEND;
+	priv->tx_wr.wr.sg_list		= priv->tx_sge;
+	priv->tx_wr.wr.send_flags	= IB_SEND_SIGNALED;
 
-	priv->rx_sge[0].lkey = priv->mr->lkey;
+	priv->rx_sge[0].lkey = priv->pd->local_dma_lkey;
 
 	priv->rx_sge[0].length = IPOIB_UD_BUF_SIZE(priv->max_ib_mtu);
 	priv->rx_wr.num_sge = 1;
@@ -250,9 +248,6 @@ out_free_wq:
 	destroy_workqueue(priv->wq);
 	priv->wq = NULL;
 
-out_free_mr:
-	ib_dereg_mr(priv->mr);
-
 out_free_pd:
 	ib_dealloc_pd(priv->pd);
 
@@ -285,12 +280,7 @@ void ipoib_transport_dev_cleanup(struct net_device *dev)
 		priv->wq = NULL;
 	}
 
-	if (ib_dereg_mr(priv->mr))
-		ipoib_warn(priv, "ib_dereg_mr failed\n");
-
-	if (ib_dealloc_pd(priv->pd))
-		ipoib_warn(priv, "ib_dealloc_pd failed\n");
-
+	ib_dealloc_pd(priv->pd);
 }
 
 void ipoib_event(struct ib_event_handler *handler,