diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c
index f6d2961..a6fc4d6 100644
--- a/drivers/infiniband/core/agent.c
+++ b/drivers/infiniband/core/agent.c
@@ -156,7 +156,7 @@
 		goto error1;
 	}
 
-	if (rdma_port_get_link_layer(device, port_num) == IB_LINK_LAYER_INFINIBAND) {
+	if (rdma_cap_ib_smi(device, port_num)) {
 		/* Obtain send only MAD agent for SMI QP */
 		port_priv->agent[0] = ib_register_mad_agent(device, port_num,
 							    IB_QPT_SMI, NULL, 0,
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 80f6cf2..08921b3 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -58,17 +58,6 @@
 	u8                 port_num;
 };
 
-static inline int start_port(struct ib_device *device)
-{
-	return (device->node_type == RDMA_NODE_IB_SWITCH) ? 0 : 1;
-}
-
-static inline int end_port(struct ib_device *device)
-{
-	return (device->node_type == RDMA_NODE_IB_SWITCH) ?
-		0 : device->phys_port_cnt;
-}
-
 int ib_get_cached_gid(struct ib_device *device,
 		      u8                port_num,
 		      int               index,
@@ -78,12 +67,12 @@
 	unsigned long flags;
 	int ret = 0;
 
-	if (port_num < start_port(device) || port_num > end_port(device))
+	if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
 		return -EINVAL;
 
 	read_lock_irqsave(&device->cache.lock, flags);
 
-	cache = device->cache.gid_cache[port_num - start_port(device)];
+	cache = device->cache.gid_cache[port_num - rdma_start_port(device)];
 
 	if (index < 0 || index >= cache->table_len)
 		ret = -EINVAL;
@@ -112,11 +101,11 @@
 
 	read_lock_irqsave(&device->cache.lock, flags);
 
-	for (p = 0; p <= end_port(device) - start_port(device); ++p) {
+	for (p = 0; p <= rdma_end_port(device) - rdma_start_port(device); ++p) {
 		cache = device->cache.gid_cache[p];
 		for (i = 0; i < cache->table_len; ++i) {
 			if (!memcmp(gid, &cache->table[i], sizeof *gid)) {
-				*port_num = p + start_port(device);
+				*port_num = p + rdma_start_port(device);
 				if (index)
 					*index = i;
 				ret = 0;
@@ -140,12 +129,12 @@
 	unsigned long flags;
 	int ret = 0;
 
-	if (port_num < start_port(device) || port_num > end_port(device))
+	if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
 		return -EINVAL;
 
 	read_lock_irqsave(&device->cache.lock, flags);
 
-	cache = device->cache.pkey_cache[port_num - start_port(device)];
+	cache = device->cache.pkey_cache[port_num - rdma_start_port(device)];
 
 	if (index < 0 || index >= cache->table_len)
 		ret = -EINVAL;
@@ -169,12 +158,12 @@
 	int ret = -ENOENT;
 	int partial_ix = -1;
 
-	if (port_num < start_port(device) || port_num > end_port(device))
+	if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
 		return -EINVAL;
 
 	read_lock_irqsave(&device->cache.lock, flags);
 
-	cache = device->cache.pkey_cache[port_num - start_port(device)];
+	cache = device->cache.pkey_cache[port_num - rdma_start_port(device)];
 
 	*index = -1;
 
@@ -209,12 +198,12 @@
 	int i;
 	int ret = -ENOENT;
 
-	if (port_num < start_port(device) || port_num > end_port(device))
+	if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
 		return -EINVAL;
 
 	read_lock_irqsave(&device->cache.lock, flags);
 
-	cache = device->cache.pkey_cache[port_num - start_port(device)];
+	cache = device->cache.pkey_cache[port_num - rdma_start_port(device)];
 
 	*index = -1;
 
@@ -238,11 +227,11 @@
 	unsigned long flags;
 	int ret = 0;
 
-	if (port_num < start_port(device) || port_num > end_port(device))
+	if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
 		return -EINVAL;
 
 	read_lock_irqsave(&device->cache.lock, flags);
-	*lmc = device->cache.lmc_cache[port_num - start_port(device)];
+	*lmc = device->cache.lmc_cache[port_num - rdma_start_port(device)];
 	read_unlock_irqrestore(&device->cache.lock, flags);
 
 	return ret;
@@ -303,13 +292,13 @@
 
 	write_lock_irq(&device->cache.lock);
 
-	old_pkey_cache = device->cache.pkey_cache[port - start_port(device)];
-	old_gid_cache  = device->cache.gid_cache [port - start_port(device)];
+	old_pkey_cache = device->cache.pkey_cache[port - rdma_start_port(device)];
+	old_gid_cache  = device->cache.gid_cache [port - rdma_start_port(device)];
 
-	device->cache.pkey_cache[port - start_port(device)] = pkey_cache;
-	device->cache.gid_cache [port - start_port(device)] = gid_cache;
+	device->cache.pkey_cache[port - rdma_start_port(device)] = pkey_cache;
+	device->cache.gid_cache [port - rdma_start_port(device)] = gid_cache;
 
-	device->cache.lmc_cache[port - start_port(device)] = tprops->lmc;
+	device->cache.lmc_cache[port - rdma_start_port(device)] = tprops->lmc;
 
 	write_unlock_irq(&device->cache.lock);
 
@@ -363,14 +352,14 @@
 
 	device->cache.pkey_cache =
 		kmalloc(sizeof *device->cache.pkey_cache *
-			(end_port(device) - start_port(device) + 1), GFP_KERNEL);
+			(rdma_end_port(device) - rdma_start_port(device) + 1), GFP_KERNEL);
 	device->cache.gid_cache =
 		kmalloc(sizeof *device->cache.gid_cache *
-			(end_port(device) - start_port(device) + 1), GFP_KERNEL);
+			(rdma_end_port(device) - rdma_start_port(device) + 1), GFP_KERNEL);
 
 	device->cache.lmc_cache = kmalloc(sizeof *device->cache.lmc_cache *
-					  (end_port(device) -
-					   start_port(device) + 1),
+					  (rdma_end_port(device) -
+					   rdma_start_port(device) + 1),
 					  GFP_KERNEL);
 
 	if (!device->cache.pkey_cache || !device->cache.gid_cache ||
@@ -380,10 +369,10 @@
 		goto err;
 	}
 
-	for (p = 0; p <= end_port(device) - start_port(device); ++p) {
+	for (p = 0; p <= rdma_end_port(device) - rdma_start_port(device); ++p) {
 		device->cache.pkey_cache[p] = NULL;
 		device->cache.gid_cache [p] = NULL;
-		ib_cache_update(device, p + start_port(device));
+		ib_cache_update(device, p + rdma_start_port(device));
 	}
 
 	INIT_IB_EVENT_HANDLER(&device->cache.event_handler,
@@ -394,7 +383,7 @@
 	return;
 
 err_cache:
-	for (p = 0; p <= end_port(device) - start_port(device); ++p) {
+	for (p = 0; p <= rdma_end_port(device) - rdma_start_port(device); ++p) {
 		kfree(device->cache.pkey_cache[p]);
 		kfree(device->cache.gid_cache[p]);
 	}
@@ -412,7 +401,7 @@
 	ib_unregister_event_handler(&device->cache.event_handler);
 	flush_workqueue(ib_wq);
 
-	for (p = 0; p <= end_port(device) - start_port(device); ++p) {
+	for (p = 0; p <= rdma_end_port(device) - rdma_start_port(device); ++p) {
 		kfree(device->cache.pkey_cache[p]);
 		kfree(device->cache.gid_cache[p]);
 	}
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 0c14191..14423c2 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3759,11 +3759,9 @@
 	};
 	unsigned long flags;
 	int ret;
+	int count = 0;
 	u8 i;
 
-	if (rdma_node_get_transport(ib_device->node_type) != RDMA_TRANSPORT_IB)
-		return;
-
 	cm_dev = kzalloc(sizeof(*cm_dev) + sizeof(*port) *
 			 ib_device->phys_port_cnt, GFP_KERNEL);
 	if (!cm_dev)
@@ -3782,6 +3780,9 @@
 
 	set_bit(IB_MGMT_METHOD_SEND, reg_req.method_mask);
 	for (i = 1; i <= ib_device->phys_port_cnt; i++) {
+		if (!rdma_cap_ib_cm(ib_device, i))
+			continue;
+
 		port = kzalloc(sizeof *port, GFP_KERNEL);
 		if (!port)
 			goto error1;
@@ -3808,7 +3809,13 @@
 		ret = ib_modify_port(ib_device, i, 0, &port_modify);
 		if (ret)
 			goto error3;
+
+		count++;
 	}
+
+	if (!count)
+		goto free;
+
 	ib_set_client_data(ib_device, &cm_client, cm_dev);
 
 	write_lock_irqsave(&cm.device_lock, flags);
@@ -3824,11 +3831,15 @@
 	port_modify.set_port_cap_mask = 0;
 	port_modify.clr_port_cap_mask = IB_PORT_CM_SUP;
 	while (--i) {
+		if (!rdma_cap_ib_cm(ib_device, i))
+			continue;
+
 		port = cm_dev->port[i-1];
 		ib_modify_port(ib_device, port->port_num, 0, &port_modify);
 		ib_unregister_mad_agent(port->mad_agent);
 		cm_remove_port_fs(port);
 	}
+free:
 	device_unregister(cm_dev->device);
 	kfree(cm_dev);
 }
@@ -3852,6 +3863,9 @@
 	write_unlock_irqrestore(&cm.device_lock, flags);
 
 	for (i = 1; i <= ib_device->phys_port_cnt; i++) {
+		if (!rdma_cap_ib_cm(ib_device, i))
+			continue;
+
 		port = cm_dev->port[i-1];
 		ib_modify_port(ib_device, port->port_num, 0, &port_modify);
 		ib_unregister_mad_agent(port->mad_agent);
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 06441a4..c34d650 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -65,6 +65,34 @@
 #define CMA_CM_MRA_SETTING (IB_CM_MRA_FLAG_DELAY | 24)
 #define CMA_IBOE_PACKET_LIFETIME 18
 
+static const char * const cma_events[] = {
+	[RDMA_CM_EVENT_ADDR_RESOLVED]	 = "address resolved",
+	[RDMA_CM_EVENT_ADDR_ERROR]	 = "address error",
+	[RDMA_CM_EVENT_ROUTE_RESOLVED]	 = "route resolved ",
+	[RDMA_CM_EVENT_ROUTE_ERROR]	 = "route error",
+	[RDMA_CM_EVENT_CONNECT_REQUEST]	 = "connect request",
+	[RDMA_CM_EVENT_CONNECT_RESPONSE] = "connect response",
+	[RDMA_CM_EVENT_CONNECT_ERROR]	 = "connect error",
+	[RDMA_CM_EVENT_UNREACHABLE]	 = "unreachable",
+	[RDMA_CM_EVENT_REJECTED]	 = "rejected",
+	[RDMA_CM_EVENT_ESTABLISHED]	 = "established",
+	[RDMA_CM_EVENT_DISCONNECTED]	 = "disconnected",
+	[RDMA_CM_EVENT_DEVICE_REMOVAL]	 = "device removal",
+	[RDMA_CM_EVENT_MULTICAST_JOIN]	 = "multicast join",
+	[RDMA_CM_EVENT_MULTICAST_ERROR]	 = "multicast error",
+	[RDMA_CM_EVENT_ADDR_CHANGE]	 = "address change",
+	[RDMA_CM_EVENT_TIMEWAIT_EXIT]	 = "timewait exit",
+};
+
+const char *rdma_event_msg(enum rdma_cm_event_type event)
+{
+	size_t index = event;
+
+	return (index < ARRAY_SIZE(cma_events) && cma_events[index]) ?
+			cma_events[index] : "unrecognized event";
+}
+EXPORT_SYMBOL(rdma_event_msg);
+
 static void cma_add_one(struct ib_device *device);
 static void cma_remove_one(struct ib_device *device);
 
@@ -349,18 +377,35 @@
 	return ret;
 }
 
+static inline int cma_validate_port(struct ib_device *device, u8 port,
+				      union ib_gid *gid, int dev_type)
+{
+	u8 found_port;
+	int ret = -ENODEV;
+
+	if ((dev_type == ARPHRD_INFINIBAND) && !rdma_protocol_ib(device, port))
+		return ret;
+
+	if ((dev_type != ARPHRD_INFINIBAND) && rdma_protocol_ib(device, port))
+		return ret;
+
+	ret = ib_find_cached_gid(device, gid, &found_port, NULL);
+	if (port != found_port)
+		return -ENODEV;
+
+	return ret;
+}
+
 static int cma_acquire_dev(struct rdma_id_private *id_priv,
 			   struct rdma_id_private *listen_id_priv)
 {
 	struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;
 	struct cma_device *cma_dev;
-	union ib_gid gid, iboe_gid;
+	union ib_gid gid, iboe_gid, *gidp;
 	int ret = -ENODEV;
-	u8 port, found_port;
-	enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ?
-		IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
+	u8 port;
 
-	if (dev_ll != IB_LINK_LAYER_INFINIBAND &&
+	if (dev_addr->dev_type != ARPHRD_INFINIBAND &&
 	    id_priv->id.ps == RDMA_PS_IPOIB)
 		return -EINVAL;
 
@@ -370,41 +415,36 @@
 
 	memcpy(&gid, dev_addr->src_dev_addr +
 	       rdma_addr_gid_offset(dev_addr), sizeof gid);
-	if (listen_id_priv &&
-	    rdma_port_get_link_layer(listen_id_priv->id.device,
-				     listen_id_priv->id.port_num) == dev_ll) {
+
+	if (listen_id_priv) {
 		cma_dev = listen_id_priv->cma_dev;
 		port = listen_id_priv->id.port_num;
-		if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB &&
-		    rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET)
-			ret = ib_find_cached_gid(cma_dev->device, &iboe_gid,
-						 &found_port, NULL);
-		else
-			ret = ib_find_cached_gid(cma_dev->device, &gid,
-						 &found_port, NULL);
+		gidp = rdma_protocol_roce(cma_dev->device, port) ?
+		       &iboe_gid : &gid;
 
-		if (!ret && (port  == found_port)) {
-			id_priv->id.port_num = found_port;
+		ret = cma_validate_port(cma_dev->device, port, gidp,
+					dev_addr->dev_type);
+		if (!ret) {
+			id_priv->id.port_num = port;
 			goto out;
 		}
 	}
+
 	list_for_each_entry(cma_dev, &dev_list, list) {
 		for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) {
 			if (listen_id_priv &&
 			    listen_id_priv->cma_dev == cma_dev &&
 			    listen_id_priv->id.port_num == port)
 				continue;
-			if (rdma_port_get_link_layer(cma_dev->device, port) == dev_ll) {
-				if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB &&
-				    rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET)
-					ret = ib_find_cached_gid(cma_dev->device, &iboe_gid, &found_port, NULL);
-				else
-					ret = ib_find_cached_gid(cma_dev->device, &gid, &found_port, NULL);
 
-				if (!ret && (port == found_port)) {
-					id_priv->id.port_num = found_port;
-					goto out;
-				}
+			gidp = rdma_protocol_roce(cma_dev->device, port) ?
+			       &iboe_gid : &gid;
+
+			ret = cma_validate_port(cma_dev->device, port, gidp,
+						dev_addr->dev_type);
+			if (!ret) {
+				id_priv->id.port_num = port;
+				goto out;
 			}
 		}
 	}
@@ -435,10 +475,10 @@
 	pkey = ntohs(addr->sib_pkey);
 
 	list_for_each_entry(cur_dev, &dev_list, list) {
-		if (rdma_node_get_transport(cur_dev->device->node_type) != RDMA_TRANSPORT_IB)
-			continue;
-
 		for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) {
+			if (!rdma_cap_af_ib(cur_dev->device, p))
+				continue;
+
 			if (ib_find_cached_pkey(cur_dev->device, p, pkey, &index))
 				continue;
 
@@ -633,10 +673,9 @@
 	if (ret)
 		goto out;
 
-	if (rdma_node_get_transport(id_priv->cma_dev->device->node_type)
-	    == RDMA_TRANSPORT_IB &&
-	    rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num)
-	    == IB_LINK_LAYER_ETHERNET) {
+	BUG_ON(id_priv->cma_dev->device != id_priv->id.device);
+
+	if (rdma_protocol_roce(id_priv->id.device, id_priv->id.port_num)) {
 		ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr.smac, NULL);
 
 		if (ret)
@@ -700,11 +739,10 @@
 	int ret;
 	u16 pkey;
 
-	if (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num) ==
-	    IB_LINK_LAYER_INFINIBAND)
-		pkey = ib_addr_get_pkey(dev_addr);
-	else
+	if (rdma_cap_eth_ah(id_priv->id.device, id_priv->id.port_num))
 		pkey = 0xffff;
+	else
+		pkey = ib_addr_get_pkey(dev_addr);
 
 	ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num,
 				  pkey, &qp_attr->pkey_index);
@@ -735,8 +773,7 @@
 	int ret = 0;
 
 	id_priv = container_of(id, struct rdma_id_private, id);
-	switch (rdma_node_get_transport(id_priv->id.device->node_type)) {
-	case RDMA_TRANSPORT_IB:
+	if (rdma_cap_ib_cm(id->device, id->port_num)) {
 		if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD))
 			ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask);
 		else
@@ -745,19 +782,15 @@
 
 		if (qp_attr->qp_state == IB_QPS_RTR)
 			qp_attr->rq_psn = id_priv->seq_num;
-		break;
-	case RDMA_TRANSPORT_IWARP:
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		if (!id_priv->cm_id.iw) {
 			qp_attr->qp_access_flags = 0;
 			*qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS;
 		} else
 			ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr,
 						 qp_attr_mask);
-		break;
-	default:
+	} else
 		ret = -ENOSYS;
-		break;
-	}
 
 	return ret;
 }
@@ -935,13 +968,9 @@
 
 static void cma_cancel_route(struct rdma_id_private *id_priv)
 {
-	switch (rdma_port_get_link_layer(id_priv->id.device, id_priv->id.port_num)) {
-	case IB_LINK_LAYER_INFINIBAND:
+	if (rdma_cap_ib_sa(id_priv->id.device, id_priv->id.port_num)) {
 		if (id_priv->query)
 			ib_sa_cancel_query(id_priv->query_id, id_priv->query);
-		break;
-	default:
-		break;
 	}
 }
 
@@ -1013,17 +1042,12 @@
 		mc = container_of(id_priv->mc_list.next,
 				  struct cma_multicast, list);
 		list_del(&mc->list);
-		switch (rdma_port_get_link_layer(id_priv->cma_dev->device, id_priv->id.port_num)) {
-		case IB_LINK_LAYER_INFINIBAND:
+		if (rdma_cap_ib_mcast(id_priv->cma_dev->device,
+				      id_priv->id.port_num)) {
 			ib_sa_free_multicast(mc->multicast.ib);
 			kfree(mc);
-			break;
-		case IB_LINK_LAYER_ETHERNET:
+		} else
 			kref_put(&mc->mcref, release_mc);
-			break;
-		default:
-			break;
-		}
 	}
 }
 
@@ -1044,17 +1068,12 @@
 	mutex_unlock(&id_priv->handler_mutex);
 
 	if (id_priv->cma_dev) {
-		switch (rdma_node_get_transport(id_priv->id.device->node_type)) {
-		case RDMA_TRANSPORT_IB:
+		if (rdma_cap_ib_cm(id_priv->id.device, 1)) {
 			if (id_priv->cm_id.ib)
 				ib_destroy_cm_id(id_priv->cm_id.ib);
-			break;
-		case RDMA_TRANSPORT_IWARP:
+		} else if (rdma_cap_iw_cm(id_priv->id.device, 1)) {
 			if (id_priv->cm_id.iw)
 				iw_destroy_cm_id(id_priv->cm_id.iw);
-			break;
-		default:
-			break;
 		}
 		cma_leave_mc_groups(id_priv);
 		cma_release_dev(id_priv);
@@ -1632,8 +1651,7 @@
 	struct rdma_cm_id *id;
 	int ret;
 
-	if (cma_family(id_priv) == AF_IB &&
-	    rdma_node_get_transport(cma_dev->device->node_type) != RDMA_TRANSPORT_IB)
+	if (cma_family(id_priv) == AF_IB && !rdma_cap_ib_cm(cma_dev->device, 1))
 		return;
 
 	id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps,
@@ -1974,26 +1992,15 @@
 		return -EINVAL;
 
 	atomic_inc(&id_priv->refcount);
-	switch (rdma_node_get_transport(id->device->node_type)) {
-	case RDMA_TRANSPORT_IB:
-		switch (rdma_port_get_link_layer(id->device, id->port_num)) {
-		case IB_LINK_LAYER_INFINIBAND:
-			ret = cma_resolve_ib_route(id_priv, timeout_ms);
-			break;
-		case IB_LINK_LAYER_ETHERNET:
-			ret = cma_resolve_iboe_route(id_priv);
-			break;
-		default:
-			ret = -ENOSYS;
-		}
-		break;
-	case RDMA_TRANSPORT_IWARP:
+	if (rdma_cap_ib_sa(id->device, id->port_num))
+		ret = cma_resolve_ib_route(id_priv, timeout_ms);
+	else if (rdma_protocol_roce(id->device, id->port_num))
+		ret = cma_resolve_iboe_route(id_priv);
+	else if (rdma_protocol_iwarp(id->device, id->port_num))
 		ret = cma_resolve_iw_route(id_priv, timeout_ms);
-		break;
-	default:
+	else
 		ret = -ENOSYS;
-		break;
-	}
+
 	if (ret)
 		goto err;
 
@@ -2035,7 +2042,7 @@
 	mutex_lock(&lock);
 	list_for_each_entry(cur_dev, &dev_list, list) {
 		if (cma_family(id_priv) == AF_IB &&
-		    rdma_node_get_transport(cur_dev->device->node_type) != RDMA_TRANSPORT_IB)
+		    !rdma_cap_ib_cm(cur_dev->device, 1))
 			continue;
 
 		if (!cma_dev)
@@ -2067,7 +2074,7 @@
 		goto out;
 
 	id_priv->id.route.addr.dev_addr.dev_type =
-		(rdma_port_get_link_layer(cma_dev->device, p) == IB_LINK_LAYER_INFINIBAND) ?
+		(rdma_protocol_ib(cma_dev->device, p)) ?
 		ARPHRD_INFINIBAND : ARPHRD_ETHER;
 
 	rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid);
@@ -2544,18 +2551,15 @@
 
 	id_priv->backlog = backlog;
 	if (id->device) {
-		switch (rdma_node_get_transport(id->device->node_type)) {
-		case RDMA_TRANSPORT_IB:
+		if (rdma_cap_ib_cm(id->device, 1)) {
 			ret = cma_ib_listen(id_priv);
 			if (ret)
 				goto err;
-			break;
-		case RDMA_TRANSPORT_IWARP:
+		} else if (rdma_cap_iw_cm(id->device, 1)) {
 			ret = cma_iw_listen(id_priv, backlog);
 			if (ret)
 				goto err;
-			break;
-		default:
+		} else {
 			ret = -ENOSYS;
 			goto err;
 		}
@@ -2891,20 +2895,15 @@
 		id_priv->srq = conn_param->srq;
 	}
 
-	switch (rdma_node_get_transport(id->device->node_type)) {
-	case RDMA_TRANSPORT_IB:
+	if (rdma_cap_ib_cm(id->device, id->port_num)) {
 		if (id->qp_type == IB_QPT_UD)
 			ret = cma_resolve_ib_udp(id_priv, conn_param);
 		else
 			ret = cma_connect_ib(id_priv, conn_param);
-		break;
-	case RDMA_TRANSPORT_IWARP:
+	} else if (rdma_cap_iw_cm(id->device, id->port_num))
 		ret = cma_connect_iw(id_priv, conn_param);
-		break;
-	default:
+	else
 		ret = -ENOSYS;
-		break;
-	}
 	if (ret)
 		goto err;
 
@@ -3007,8 +3006,7 @@
 		id_priv->srq = conn_param->srq;
 	}
 
-	switch (rdma_node_get_transport(id->device->node_type)) {
-	case RDMA_TRANSPORT_IB:
+	if (rdma_cap_ib_cm(id->device, id->port_num)) {
 		if (id->qp_type == IB_QPT_UD) {
 			if (conn_param)
 				ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS,
@@ -3024,14 +3022,10 @@
 			else
 				ret = cma_rep_recv(id_priv);
 		}
-		break;
-	case RDMA_TRANSPORT_IWARP:
+	} else if (rdma_cap_iw_cm(id->device, id->port_num))
 		ret = cma_accept_iw(id_priv, conn_param);
-		break;
-	default:
+	else
 		ret = -ENOSYS;
-		break;
-	}
 
 	if (ret)
 		goto reject;
@@ -3075,8 +3069,7 @@
 	if (!id_priv->cm_id.ib)
 		return -EINVAL;
 
-	switch (rdma_node_get_transport(id->device->node_type)) {
-	case RDMA_TRANSPORT_IB:
+	if (rdma_cap_ib_cm(id->device, id->port_num)) {
 		if (id->qp_type == IB_QPT_UD)
 			ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0,
 						private_data, private_data_len);
@@ -3084,15 +3077,12 @@
 			ret = ib_send_cm_rej(id_priv->cm_id.ib,
 					     IB_CM_REJ_CONSUMER_DEFINED, NULL,
 					     0, private_data, private_data_len);
-		break;
-	case RDMA_TRANSPORT_IWARP:
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		ret = iw_cm_reject(id_priv->cm_id.iw,
 				   private_data, private_data_len);
-		break;
-	default:
+	} else
 		ret = -ENOSYS;
-		break;
-	}
+
 	return ret;
 }
 EXPORT_SYMBOL(rdma_reject);
@@ -3106,22 +3096,18 @@
 	if (!id_priv->cm_id.ib)
 		return -EINVAL;
 
-	switch (rdma_node_get_transport(id->device->node_type)) {
-	case RDMA_TRANSPORT_IB:
+	if (rdma_cap_ib_cm(id->device, id->port_num)) {
 		ret = cma_modify_qp_err(id_priv);
 		if (ret)
 			goto out;
 		/* Initiate or respond to a disconnect. */
 		if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0))
 			ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0);
-		break;
-	case RDMA_TRANSPORT_IWARP:
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		ret = iw_cm_disconnect(id_priv->cm_id.iw, 0);
-		break;
-	default:
+	} else
 		ret = -EINVAL;
-		break;
-	}
+
 out:
 	return ret;
 }
@@ -3367,24 +3353,13 @@
 	list_add(&mc->list, &id_priv->mc_list);
 	spin_unlock(&id_priv->lock);
 
-	switch (rdma_node_get_transport(id->device->node_type)) {
-	case RDMA_TRANSPORT_IB:
-		switch (rdma_port_get_link_layer(id->device, id->port_num)) {
-		case IB_LINK_LAYER_INFINIBAND:
-			ret = cma_join_ib_multicast(id_priv, mc);
-			break;
-		case IB_LINK_LAYER_ETHERNET:
-			kref_init(&mc->mcref);
-			ret = cma_iboe_join_multicast(id_priv, mc);
-			break;
-		default:
-			ret = -EINVAL;
-		}
-		break;
-	default:
+	if (rdma_protocol_roce(id->device, id->port_num)) {
+		kref_init(&mc->mcref);
+		ret = cma_iboe_join_multicast(id_priv, mc);
+	} else if (rdma_cap_ib_mcast(id->device, id->port_num))
+		ret = cma_join_ib_multicast(id_priv, mc);
+	else
 		ret = -ENOSYS;
-		break;
-	}
 
 	if (ret) {
 		spin_lock_irq(&id_priv->lock);
@@ -3412,19 +3387,15 @@
 				ib_detach_mcast(id->qp,
 						&mc->multicast.ib->rec.mgid,
 						be16_to_cpu(mc->multicast.ib->rec.mlid));
-			if (rdma_node_get_transport(id_priv->cma_dev->device->node_type) == RDMA_TRANSPORT_IB) {
-				switch (rdma_port_get_link_layer(id->device, id->port_num)) {
-				case IB_LINK_LAYER_INFINIBAND:
-					ib_sa_free_multicast(mc->multicast.ib);
-					kfree(mc);
-					break;
-				case IB_LINK_LAYER_ETHERNET:
-					kref_put(&mc->mcref, release_mc);
-					break;
-				default:
-					break;
-				}
-			}
+
+			BUG_ON(id_priv->cma_dev->device != id->device);
+
+			if (rdma_cap_ib_mcast(id->device, id->port_num)) {
+				ib_sa_free_multicast(mc->multicast.ib);
+				kfree(mc);
+			} else if (rdma_protocol_roce(id->device, id->port_num))
+				kref_put(&mc->mcref, release_mc);
+
 			return;
 		}
 	}
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 18c1ece..8d07c12 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -92,7 +92,8 @@
 		IB_MANDATORY_FUNC(poll_cq),
 		IB_MANDATORY_FUNC(req_notify_cq),
 		IB_MANDATORY_FUNC(get_dma_mr),
-		IB_MANDATORY_FUNC(dereg_mr)
+		IB_MANDATORY_FUNC(dereg_mr),
+		IB_MANDATORY_FUNC(get_port_immutable)
 	};
 	int i;
 
@@ -151,18 +152,6 @@
 	return 0;
 }
 
-static int start_port(struct ib_device *device)
-{
-	return (device->node_type == RDMA_NODE_IB_SWITCH) ? 0 : 1;
-}
-
-
-static int end_port(struct ib_device *device)
-{
-	return (device->node_type == RDMA_NODE_IB_SWITCH) ?
-		0 : device->phys_port_cnt;
-}
-
 /**
  * ib_alloc_device - allocate an IB device struct
  * @size:size of structure to allocate
@@ -222,42 +211,38 @@
 	return 0;
 }
 
-static int read_port_table_lengths(struct ib_device *device)
+static int read_port_immutable(struct ib_device *device)
 {
-	struct ib_port_attr *tprops = NULL;
-	int num_ports, ret = -ENOMEM;
-	u8 port_index;
+	int ret = -ENOMEM;
+	u8 start_port = rdma_start_port(device);
+	u8 end_port = rdma_end_port(device);
+	u8 port;
 
-	tprops = kmalloc(sizeof *tprops, GFP_KERNEL);
-	if (!tprops)
-		goto out;
-
-	num_ports = end_port(device) - start_port(device) + 1;
-
-	device->pkey_tbl_len = kmalloc(sizeof *device->pkey_tbl_len * num_ports,
-				       GFP_KERNEL);
-	device->gid_tbl_len = kmalloc(sizeof *device->gid_tbl_len * num_ports,
-				      GFP_KERNEL);
-	if (!device->pkey_tbl_len || !device->gid_tbl_len)
+	/**
+	 * device->port_immutable is indexed directly by the port number to make
+	 * access to this data as efficient as possible.
+	 *
+	 * Therefore port_immutable is declared as a 1 based array with
+	 * potential empty slots at the beginning.
+	 */
+	device->port_immutable = kzalloc(sizeof(*device->port_immutable)
+					 * (end_port + 1),
+					 GFP_KERNEL);
+	if (!device->port_immutable)
 		goto err;
 
-	for (port_index = 0; port_index < num_ports; ++port_index) {
-		ret = ib_query_port(device, port_index + start_port(device),
-					tprops);
+	for (port = start_port; port <= end_port; ++port) {
+		ret = device->get_port_immutable(device, port,
+						 &device->port_immutable[port]);
 		if (ret)
 			goto err;
-		device->pkey_tbl_len[port_index] = tprops->pkey_tbl_len;
-		device->gid_tbl_len[port_index]  = tprops->gid_tbl_len;
 	}
 
 	ret = 0;
 	goto out;
-
 err:
-	kfree(device->gid_tbl_len);
-	kfree(device->pkey_tbl_len);
+	kfree(device->port_immutable);
 out:
-	kfree(tprops);
 	return ret;
 }
 
@@ -294,9 +279,9 @@
 	spin_lock_init(&device->event_handler_lock);
 	spin_lock_init(&device->client_data_lock);
 
-	ret = read_port_table_lengths(device);
+	ret = read_port_immutable(device);
 	if (ret) {
-		printk(KERN_WARNING "Couldn't create table lengths cache for device %s\n",
+		printk(KERN_WARNING "Couldn't create per port immutable data %s\n",
 		       device->name);
 		goto out;
 	}
@@ -305,8 +290,7 @@
 	if (ret) {
 		printk(KERN_WARNING "Couldn't register device %s with driver model\n",
 		       device->name);
-		kfree(device->gid_tbl_len);
-		kfree(device->pkey_tbl_len);
+		kfree(device->port_immutable);
 		goto out;
 	}
 
@@ -348,9 +332,6 @@
 
 	list_del(&device->core_list);
 
-	kfree(device->gid_tbl_len);
-	kfree(device->pkey_tbl_len);
-
 	mutex_unlock(&device_mutex);
 
 	ib_device_unregister_sysfs(device);
@@ -575,7 +556,7 @@
 		  u8 port_num,
 		  struct ib_port_attr *port_attr)
 {
-	if (port_num < start_port(device) || port_num > end_port(device))
+	if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
 		return -EINVAL;
 
 	return device->query_port(device, port_num, port_attr);
@@ -653,7 +634,7 @@
 	if (!device->modify_port)
 		return -ENOSYS;
 
-	if (port_num < start_port(device) || port_num > end_port(device))
+	if (port_num < rdma_start_port(device) || port_num > rdma_end_port(device))
 		return -EINVAL;
 
 	return device->modify_port(device, port_num, port_modify_mask,
@@ -676,8 +657,8 @@
 	union ib_gid tmp_gid;
 	int ret, port, i;
 
-	for (port = start_port(device); port <= end_port(device); ++port) {
-		for (i = 0; i < device->gid_tbl_len[port - start_port(device)]; ++i) {
+	for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) {
+		for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) {
 			ret = ib_query_gid(device, port, i, &tmp_gid);
 			if (ret)
 				return ret;
@@ -709,7 +690,7 @@
 	u16 tmp_pkey;
 	int partial_ix = -1;
 
-	for (i = 0; i < device->pkey_tbl_len[port_num - start_port(device)]; ++i) {
+	for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) {
 		ret = ib_query_pkey(device, port_num, i, &tmp_pkey);
 		if (ret)
 			return ret;
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 74c30f4..600af26 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -179,12 +179,12 @@
 	return 0;
 }
 
-int ib_response_mad(struct ib_mad *mad)
+int ib_response_mad(const struct ib_mad_hdr *hdr)
 {
-	return ((mad->mad_hdr.method & IB_MGMT_METHOD_RESP) ||
-		(mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) ||
-		((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_BM) &&
-		 (mad->mad_hdr.attr_mod & IB_BM_ATTR_MOD_RESP)));
+	return ((hdr->method & IB_MGMT_METHOD_RESP) ||
+		(hdr->method == IB_MGMT_METHOD_TRAP_REPRESS) ||
+		((hdr->mgmt_class == IB_MGMT_CLASS_BM) &&
+		 (hdr->attr_mod & IB_BM_ATTR_MOD_RESP)));
 }
 EXPORT_SYMBOL(ib_response_mad);
 
@@ -791,7 +791,7 @@
 	switch (ret)
 	{
 	case IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY:
-		if (ib_response_mad(&mad_priv->mad.mad) &&
+		if (ib_response_mad(&mad_priv->mad.mad.mad_hdr) &&
 		    mad_agent_priv->agent.recv_handler) {
 			local->mad_priv = mad_priv;
 			local->recv_mad_agent = mad_agent_priv;
@@ -910,7 +910,7 @@
 	return 0;
 }
 
-int ib_mad_kernel_rmpp_agent(struct ib_mad_agent *agent)
+int ib_mad_kernel_rmpp_agent(const struct ib_mad_agent *agent)
 {
 	return agent->rmpp_version && !(agent->flags & IB_MAD_USER_RMPP);
 }
@@ -1628,7 +1628,7 @@
 	unsigned long flags;
 
 	spin_lock_irqsave(&port_priv->reg_lock, flags);
-	if (ib_response_mad(mad)) {
+	if (ib_response_mad(&mad->mad_hdr)) {
 		u32 hi_tid;
 		struct ib_mad_agent_private *entry;
 
@@ -1708,20 +1708,20 @@
 	return mad_agent;
 }
 
-static int validate_mad(struct ib_mad *mad, u32 qp_num)
+static int validate_mad(const struct ib_mad_hdr *mad_hdr, u32 qp_num)
 {
 	int valid = 0;
 
 	/* Make sure MAD base version is understood */
-	if (mad->mad_hdr.base_version != IB_MGMT_BASE_VERSION) {
+	if (mad_hdr->base_version != IB_MGMT_BASE_VERSION) {
 		pr_err("MAD received with unsupported base version %d\n",
-			mad->mad_hdr.base_version);
+			mad_hdr->base_version);
 		goto out;
 	}
 
 	/* Filter SMI packets sent to other than QP0 */
-	if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED) ||
-	    (mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) {
+	if ((mad_hdr->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED) ||
+	    (mad_hdr->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) {
 		if (qp_num == 0)
 			valid = 1;
 	} else {
@@ -1734,8 +1734,8 @@
 	return valid;
 }
 
-static int is_data_mad(struct ib_mad_agent_private *mad_agent_priv,
-		       struct ib_mad_hdr *mad_hdr)
+static int is_rmpp_data_mad(const struct ib_mad_agent_private *mad_agent_priv,
+			    const struct ib_mad_hdr *mad_hdr)
 {
 	struct ib_rmpp_mad *rmpp_mad;
 
@@ -1747,16 +1747,16 @@
 		(rmpp_mad->rmpp_hdr.rmpp_type == IB_MGMT_RMPP_TYPE_DATA);
 }
 
-static inline int rcv_has_same_class(struct ib_mad_send_wr_private *wr,
-				     struct ib_mad_recv_wc *rwc)
+static inline int rcv_has_same_class(const struct ib_mad_send_wr_private *wr,
+				     const struct ib_mad_recv_wc *rwc)
 {
-	return ((struct ib_mad *)(wr->send_buf.mad))->mad_hdr.mgmt_class ==
+	return ((struct ib_mad_hdr *)(wr->send_buf.mad))->mgmt_class ==
 		rwc->recv_buf.mad->mad_hdr.mgmt_class;
 }
 
-static inline int rcv_has_same_gid(struct ib_mad_agent_private *mad_agent_priv,
-				   struct ib_mad_send_wr_private *wr,
-				   struct ib_mad_recv_wc *rwc )
+static inline int rcv_has_same_gid(const struct ib_mad_agent_private *mad_agent_priv,
+				   const struct ib_mad_send_wr_private *wr,
+				   const struct ib_mad_recv_wc *rwc )
 {
 	struct ib_ah_attr attr;
 	u8 send_resp, rcv_resp;
@@ -1765,8 +1765,8 @@
 	u8 port_num = mad_agent_priv->agent.port_num;
 	u8 lmc;
 
-	send_resp = ib_response_mad((struct ib_mad *)wr->send_buf.mad);
-	rcv_resp = ib_response_mad(rwc->recv_buf.mad);
+	send_resp = ib_response_mad((struct ib_mad_hdr *)wr->send_buf.mad);
+	rcv_resp = ib_response_mad(&rwc->recv_buf.mad->mad_hdr);
 
 	if (send_resp == rcv_resp)
 		/* both requests, or both responses. GIDs different */
@@ -1811,8 +1811,8 @@
 }
 
 struct ib_mad_send_wr_private*
-ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv,
-		 struct ib_mad_recv_wc *wc)
+ib_find_send_mad(const struct ib_mad_agent_private *mad_agent_priv,
+		 const struct ib_mad_recv_wc *wc)
 {
 	struct ib_mad_send_wr_private *wr;
 	struct ib_mad *mad;
@@ -1836,7 +1836,7 @@
 	 * been notified that the send has completed
 	 */
 	list_for_each_entry(wr, &mad_agent_priv->send_list, agent_list) {
-		if (is_data_mad(mad_agent_priv, wr->send_buf.mad) &&
+		if (is_rmpp_data_mad(mad_agent_priv, wr->send_buf.mad) &&
 		    wr->tid == mad->mad_hdr.tid &&
 		    wr->timeout &&
 		    rcv_has_same_class(wr, wc) &&
@@ -1879,7 +1879,7 @@
 	}
 
 	/* Complete corresponding request */
-	if (ib_response_mad(mad_recv_wc->recv_buf.mad)) {
+	if (ib_response_mad(&mad_recv_wc->recv_buf.mad->mad_hdr)) {
 		spin_lock_irqsave(&mad_agent_priv->lock, flags);
 		mad_send_wr = ib_find_send_mad(mad_agent_priv, mad_recv_wc);
 		if (!mad_send_wr) {
@@ -1979,7 +1979,7 @@
 		snoop_recv(qp_info, &recv->header.recv_wc, IB_MAD_SNOOP_RECVS);
 
 	/* Validate MAD */
-	if (!validate_mad(&recv->mad.mad, qp_info->qp->qp_num))
+	if (!validate_mad(&recv->mad.mad.mad_hdr, qp_info->qp->qp_num))
 		goto out;
 
 	response = kmem_cache_alloc(ib_mad_cache, GFP_KERNEL);
@@ -2411,7 +2411,8 @@
 
 	list_for_each_entry(mad_send_wr, &mad_agent_priv->send_list,
 			    agent_list) {
-		if (is_data_mad(mad_agent_priv, mad_send_wr->send_buf.mad) &&
+		if (is_rmpp_data_mad(mad_agent_priv,
+				     mad_send_wr->send_buf.mad) &&
 		    &mad_send_wr->send_buf == send_buf)
 			return mad_send_wr;
 	}
@@ -2938,7 +2939,7 @@
 	init_mad_qp(port_priv, &port_priv->qp_info[1]);
 
 	cq_size = mad_sendq_size + mad_recvq_size;
-	has_smi = rdma_port_get_link_layer(device, port_num) == IB_LINK_LAYER_INFINIBAND;
+	has_smi = rdma_cap_ib_smi(device, port_num);
 	if (has_smi)
 		cq_size *= 2;
 
@@ -3057,9 +3058,6 @@
 {
 	int start, end, i;
 
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
-
 	if (device->node_type == RDMA_NODE_IB_SWITCH) {
 		start = 0;
 		end   = 0;
@@ -3069,6 +3067,9 @@
 	}
 
 	for (i = start; i <= end; i++) {
+		if (!rdma_cap_ib_mad(device, i))
+			continue;
+
 		if (ib_mad_port_open(device, i)) {
 			dev_err(&device->dev, "Couldn't open port %d\n", i);
 			goto error;
@@ -3086,40 +3087,39 @@
 		dev_err(&device->dev, "Couldn't close port %d\n", i);
 
 error:
-	i--;
+	while (--i >= start) {
+		if (!rdma_cap_ib_mad(device, i))
+			continue;
 
-	while (i >= start) {
 		if (ib_agent_port_close(device, i))
 			dev_err(&device->dev,
 				"Couldn't close port %d for agents\n", i);
 		if (ib_mad_port_close(device, i))
 			dev_err(&device->dev, "Couldn't close port %d\n", i);
-		i--;
 	}
 }
 
 static void ib_mad_remove_device(struct ib_device *device)
 {
-	int i, num_ports, cur_port;
-
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
+	int start, end, i;
 
 	if (device->node_type == RDMA_NODE_IB_SWITCH) {
-		num_ports = 1;
-		cur_port = 0;
+		start = 0;
+		end   = 0;
 	} else {
-		num_ports = device->phys_port_cnt;
-		cur_port = 1;
+		start = 1;
+		end   = device->phys_port_cnt;
 	}
-	for (i = 0; i < num_ports; i++, cur_port++) {
-		if (ib_agent_port_close(device, cur_port))
+
+	for (i = start; i <= end; i++) {
+		if (!rdma_cap_ib_mad(device, i))
+			continue;
+
+		if (ib_agent_port_close(device, i))
 			dev_err(&device->dev,
-				"Couldn't close port %d for agents\n",
-				cur_port);
-		if (ib_mad_port_close(device, cur_port))
-			dev_err(&device->dev, "Couldn't close port %d\n",
-				cur_port);
+				"Couldn't close port %d for agents\n", i);
+		if (ib_mad_port_close(device, i))
+			dev_err(&device->dev, "Couldn't close port %d\n", i);
 	}
 }
 
diff --git a/drivers/infiniband/core/mad_priv.h b/drivers/infiniband/core/mad_priv.h
index d1a0b0e..7b19cba 100644
--- a/drivers/infiniband/core/mad_priv.h
+++ b/drivers/infiniband/core/mad_priv.h
@@ -213,8 +213,8 @@
 int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
 
 struct ib_mad_send_wr_private *
-ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv,
-		 struct ib_mad_recv_wc *mad_recv_wc);
+ib_find_send_mad(const struct ib_mad_agent_private *mad_agent_priv,
+		 const struct ib_mad_recv_wc *mad_recv_wc);
 
 void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
 			     struct ib_mad_send_wc *mad_send_wc);
diff --git a/drivers/infiniband/core/multicast.c b/drivers/infiniband/core/multicast.c
index fa17b55..605f20a 100644
--- a/drivers/infiniband/core/multicast.c
+++ b/drivers/infiniband/core/multicast.c
@@ -780,8 +780,7 @@
 	int index;
 
 	dev = container_of(handler, struct mcast_device, event_handler);
-	if (rdma_port_get_link_layer(dev->device, event->element.port_num) !=
-	    IB_LINK_LAYER_INFINIBAND)
+	if (WARN_ON(!rdma_cap_ib_mcast(dev->device, event->element.port_num)))
 		return;
 
 	index = event->element.port_num - dev->start_port;
@@ -808,9 +807,6 @@
 	int i;
 	int count = 0;
 
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
-
 	dev = kmalloc(sizeof *dev + device->phys_port_cnt * sizeof *port,
 		      GFP_KERNEL);
 	if (!dev)
@@ -824,8 +820,7 @@
 	}
 
 	for (i = 0; i <= dev->end_port - dev->start_port; i++) {
-		if (rdma_port_get_link_layer(device, dev->start_port + i) !=
-		    IB_LINK_LAYER_INFINIBAND)
+		if (!rdma_cap_ib_mcast(device, dev->start_port + i))
 			continue;
 		port = &dev->port[i];
 		port->dev = dev;
@@ -863,8 +858,7 @@
 	flush_workqueue(mcast_wq);
 
 	for (i = 0; i <= dev->end_port - dev->start_port; i++) {
-		if (rdma_port_get_link_layer(device, dev->start_port + i) ==
-		    IB_LINK_LAYER_INFINIBAND) {
+		if (rdma_cap_ib_mcast(device, dev->start_port + i)) {
 			port = &dev->port[i];
 			deref_port(port);
 			wait_for_completion(&port->comp);
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index c38f030..7f7c8c9 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -450,7 +450,7 @@
 		struct ib_sa_port *port =
 			&sa_dev->port[event->element.port_num - sa_dev->start_port];
 
-		if (rdma_port_get_link_layer(handler->device, port->port_num) != IB_LINK_LAYER_INFINIBAND)
+		if (WARN_ON(!rdma_cap_ib_sa(handler->device, port->port_num)))
 			return;
 
 		spin_lock_irqsave(&port->ah_lock, flags);
@@ -540,7 +540,7 @@
 	ah_attr->port_num = port_num;
 	ah_attr->static_rate = rec->rate;
 
-	force_grh = rdma_port_get_link_layer(device, port_num) == IB_LINK_LAYER_ETHERNET;
+	force_grh = rdma_cap_eth_ah(device, port_num);
 
 	if (rec->hop_limit > 1 || force_grh) {
 		ah_attr->ah_flags = IB_AH_GRH;
@@ -1153,9 +1153,7 @@
 {
 	struct ib_sa_device *sa_dev;
 	int s, e, i;
-
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
+	int count = 0;
 
 	if (device->node_type == RDMA_NODE_IB_SWITCH)
 		s = e = 0;
@@ -1175,7 +1173,7 @@
 
 	for (i = 0; i <= e - s; ++i) {
 		spin_lock_init(&sa_dev->port[i].ah_lock);
-		if (rdma_port_get_link_layer(device, i + 1) != IB_LINK_LAYER_INFINIBAND)
+		if (!rdma_cap_ib_sa(device, i + 1))
 			continue;
 
 		sa_dev->port[i].sm_ah    = NULL;
@@ -1189,8 +1187,13 @@
 			goto err;
 
 		INIT_WORK(&sa_dev->port[i].update_task, update_sm_ah);
+
+		count++;
 	}
 
+	if (!count)
+		goto free;
+
 	ib_set_client_data(device, &sa_client, sa_dev);
 
 	/*
@@ -1204,19 +1207,20 @@
 	if (ib_register_event_handler(&sa_dev->event_handler))
 		goto err;
 
-	for (i = 0; i <= e - s; ++i)
-		if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND)
+	for (i = 0; i <= e - s; ++i) {
+		if (rdma_cap_ib_sa(device, i + 1))
 			update_sm_ah(&sa_dev->port[i].update_task);
+	}
 
 	return;
 
 err:
-	while (--i >= 0)
-		if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND)
+	while (--i >= 0) {
+		if (rdma_cap_ib_sa(device, i + 1))
 			ib_unregister_mad_agent(sa_dev->port[i].agent);
-
+	}
+free:
 	kfree(sa_dev);
-
 	return;
 }
 
@@ -1233,7 +1237,7 @@
 	flush_workqueue(ib_wq);
 
 	for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) {
-		if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND) {
+		if (rdma_cap_ib_sa(device, i + 1)) {
 			ib_unregister_mad_agent(sa_dev->port[i].agent);
 			if (sa_dev->port[i].sm_ah)
 				kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah);
diff --git a/drivers/infiniband/core/smi.c b/drivers/infiniband/core/smi.c
index 5855e44..e6c6810 100644
--- a/drivers/infiniband/core/smi.c
+++ b/drivers/infiniband/core/smi.c
@@ -41,7 +41,7 @@
 
 /*
  * Fixup a directed route SMP for sending
- * Return 0 if the SMP should be discarded
+ * Return IB_SMI_DISCARD if the SMP should be discarded
  */
 enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,
 				       u8 node_type, int port_num)
@@ -126,7 +126,7 @@
 
 /*
  * Adjust information for a received SMP
- * Return 0 if the SMP should be dropped
+ * Return IB_SMI_DISCARD if the SMP should be dropped
  */
 enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type,
 				       int port_num, int phys_port_cnt)
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index cbd0383..d0334c1 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -456,6 +456,7 @@
 {
 	struct ib_device *dev = container_of(device, struct ib_device, dev);
 
+	kfree(dev->port_immutable);
 	kfree(dev);
 }
 
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index f2f6393..62c24b1 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -1253,8 +1253,7 @@
 	dev_t base;
 	struct ib_ucm_device *ucm_dev;
 
-	if (!device->alloc_ucontext ||
-	    rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+	if (!device->alloc_ucontext || !rdma_cap_ib_cm(device, 1))
 		return;
 
 	ucm_dev = kzalloc(sizeof *ucm_dev, GFP_KERNEL);
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 45d67e9..ad45469 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -722,26 +722,13 @@
 
 	resp.node_guid = (__force __u64) ctx->cm_id->device->node_guid;
 	resp.port_num = ctx->cm_id->port_num;
-	switch (rdma_node_get_transport(ctx->cm_id->device->node_type)) {
-	case RDMA_TRANSPORT_IB:
-		switch (rdma_port_get_link_layer(ctx->cm_id->device,
-			ctx->cm_id->port_num)) {
-		case IB_LINK_LAYER_INFINIBAND:
-			ucma_copy_ib_route(&resp, &ctx->cm_id->route);
-			break;
-		case IB_LINK_LAYER_ETHERNET:
-			ucma_copy_iboe_route(&resp, &ctx->cm_id->route);
-			break;
-		default:
-			break;
-		}
-		break;
-	case RDMA_TRANSPORT_IWARP:
+
+	if (rdma_cap_ib_sa(ctx->cm_id->device, ctx->cm_id->port_num))
+		ucma_copy_ib_route(&resp, &ctx->cm_id->route);
+	else if (rdma_protocol_roce(ctx->cm_id->device, ctx->cm_id->port_num))
+		ucma_copy_iboe_route(&resp, &ctx->cm_id->route);
+	else if (rdma_protocol_iwarp(ctx->cm_id->device, ctx->cm_id->port_num))
 		ucma_copy_iw_route(&resp, &ctx->cm_id->route);
-		break;
-	default:
-		break;
-	}
 
 out:
 	if (copy_to_user((void __user *)(unsigned long)cmd.response,
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 928cdd2..e58d701 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -99,7 +99,6 @@
 };
 
 struct ib_umad_device {
-	int                  start_port, end_port;
 	struct kobject       kobj;
 	struct ib_umad_port  port[0];
 };
@@ -426,11 +425,11 @@
 		 * the same TID, reject the second as a duplicate.  This is more
 		 * restrictive than required by the spec.
 		 */
-		if (!ib_response_mad((struct ib_mad *) hdr)) {
-			if (!ib_response_mad((struct ib_mad *) sent_hdr))
+		if (!ib_response_mad(hdr)) {
+			if (!ib_response_mad(sent_hdr))
 				return 1;
 			continue;
-		} else if (!ib_response_mad((struct ib_mad *) sent_hdr))
+		} else if (!ib_response_mad(sent_hdr))
 			continue;
 
 		if (same_destination(&packet->mad.hdr, &sent_packet->mad.hdr))
@@ -1273,16 +1272,10 @@
 {
 	struct ib_umad_device *umad_dev;
 	int s, e, i;
+	int count = 0;
 
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
-
-	if (device->node_type == RDMA_NODE_IB_SWITCH)
-		s = e = 0;
-	else {
-		s = 1;
-		e = device->phys_port_cnt;
-	}
+	s = rdma_start_port(device);
+	e = rdma_end_port(device);
 
 	umad_dev = kzalloc(sizeof *umad_dev +
 			   (e - s + 1) * sizeof (struct ib_umad_port),
@@ -1292,25 +1285,34 @@
 
 	kobject_init(&umad_dev->kobj, &ib_umad_dev_ktype);
 
-	umad_dev->start_port = s;
-	umad_dev->end_port   = e;
-
 	for (i = s; i <= e; ++i) {
+		if (!rdma_cap_ib_mad(device, i))
+			continue;
+
 		umad_dev->port[i - s].umad_dev = umad_dev;
 
 		if (ib_umad_init_port(device, i, umad_dev,
 				      &umad_dev->port[i - s]))
 			goto err;
+
+		count++;
 	}
 
+	if (!count)
+		goto free;
+
 	ib_set_client_data(device, &umad_client, umad_dev);
 
 	return;
 
 err:
-	while (--i >= s)
-		ib_umad_kill_port(&umad_dev->port[i - s]);
+	while (--i >= s) {
+		if (!rdma_cap_ib_mad(device, i))
+			continue;
 
+		ib_umad_kill_port(&umad_dev->port[i - s]);
+	}
+free:
 	kobject_put(&umad_dev->kobj);
 }
 
@@ -1322,8 +1324,10 @@
 	if (!umad_dev)
 		return;
 
-	for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i)
-		ib_umad_kill_port(&umad_dev->port[i]);
+	for (i = 0; i <= rdma_end_port(device) - rdma_start_port(device); ++i) {
+		if (rdma_cap_ib_mad(device, i + rdma_start_port(device)))
+			ib_umad_kill_port(&umad_dev->port[i]);
+	}
 
 	kobject_put(&umad_dev->kobj);
 }
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index f93eb8d..685a362 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -48,6 +48,71 @@
 
 #include "core_priv.h"
 
+static const char * const ib_events[] = {
+	[IB_EVENT_CQ_ERR]		= "CQ error",
+	[IB_EVENT_QP_FATAL]		= "QP fatal error",
+	[IB_EVENT_QP_REQ_ERR]		= "QP request error",
+	[IB_EVENT_QP_ACCESS_ERR]	= "QP access error",
+	[IB_EVENT_COMM_EST]		= "communication established",
+	[IB_EVENT_SQ_DRAINED]		= "send queue drained",
+	[IB_EVENT_PATH_MIG]		= "path migration successful",
+	[IB_EVENT_PATH_MIG_ERR]		= "path migration error",
+	[IB_EVENT_DEVICE_FATAL]		= "device fatal error",
+	[IB_EVENT_PORT_ACTIVE]		= "port active",
+	[IB_EVENT_PORT_ERR]		= "port error",
+	[IB_EVENT_LID_CHANGE]		= "LID change",
+	[IB_EVENT_PKEY_CHANGE]		= "P_key change",
+	[IB_EVENT_SM_CHANGE]		= "SM change",
+	[IB_EVENT_SRQ_ERR]		= "SRQ error",
+	[IB_EVENT_SRQ_LIMIT_REACHED]	= "SRQ limit reached",
+	[IB_EVENT_QP_LAST_WQE_REACHED]	= "last WQE reached",
+	[IB_EVENT_CLIENT_REREGISTER]	= "client reregister",
+	[IB_EVENT_GID_CHANGE]		= "GID changed",
+};
+
+const char *ib_event_msg(enum ib_event_type event)
+{
+	size_t index = event;
+
+	return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ?
+			ib_events[index] : "unrecognized event";
+}
+EXPORT_SYMBOL(ib_event_msg);
+
+static const char * const wc_statuses[] = {
+	[IB_WC_SUCCESS]			= "success",
+	[IB_WC_LOC_LEN_ERR]		= "local length error",
+	[IB_WC_LOC_QP_OP_ERR]		= "local QP operation error",
+	[IB_WC_LOC_EEC_OP_ERR]		= "local EE context operation error",
+	[IB_WC_LOC_PROT_ERR]		= "local protection error",
+	[IB_WC_WR_FLUSH_ERR]		= "WR flushed",
+	[IB_WC_MW_BIND_ERR]		= "memory management operation error",
+	[IB_WC_BAD_RESP_ERR]		= "bad response error",
+	[IB_WC_LOC_ACCESS_ERR]		= "local access error",
+	[IB_WC_REM_INV_REQ_ERR]		= "invalid request error",
+	[IB_WC_REM_ACCESS_ERR]		= "remote access error",
+	[IB_WC_REM_OP_ERR]		= "remote operation error",
+	[IB_WC_RETRY_EXC_ERR]		= "transport retry counter exceeded",
+	[IB_WC_RNR_RETRY_EXC_ERR]	= "RNR retry counter exceeded",
+	[IB_WC_LOC_RDD_VIOL_ERR]	= "local RDD violation error",
+	[IB_WC_REM_INV_RD_REQ_ERR]	= "remote invalid RD request",
+	[IB_WC_REM_ABORT_ERR]		= "operation aborted",
+	[IB_WC_INV_EECN_ERR]		= "invalid EE context number",
+	[IB_WC_INV_EEC_STATE_ERR]	= "invalid EE context state",
+	[IB_WC_FATAL_ERR]		= "fatal error",
+	[IB_WC_RESP_TIMEOUT_ERR]	= "response timeout error",
+	[IB_WC_GENERAL_ERR]		= "general error",
+};
+
+const char *ib_wc_status_msg(enum ib_wc_status status)
+{
+	size_t index = status;
+
+	return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ?
+			wc_statuses[index] : "unrecognized status";
+}
+EXPORT_SYMBOL(ib_wc_status_msg);
+
 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate)
 {
 	switch (rate) {
@@ -198,11 +263,9 @@
 	u32 flow_class;
 	u16 gid_index;
 	int ret;
-	int is_eth = (rdma_port_get_link_layer(device, port_num) ==
-			IB_LINK_LAYER_ETHERNET);
 
 	memset(ah_attr, 0, sizeof *ah_attr);
-	if (is_eth) {
+	if (rdma_cap_eth_ah(device, port_num)) {
 		if (!(wc->wc_flags & IB_WC_GRH))
 			return -EPROTOTYPE;
 
@@ -871,7 +934,7 @@
 	union ib_gid  sgid;
 
 	if ((*qp_attr_mask & IB_QP_AV)  &&
-	    (rdma_port_get_link_layer(qp->device, qp_attr->ah_attr.port_num) == IB_LINK_LAYER_ETHERNET)) {
+	    (rdma_cap_eth_ah(qp->device, qp_attr->ah_attr.port_num))) {
 		ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
 				   qp_attr->ah_attr.grh.sgid_index, &sgid);
 		if (ret)
diff --git a/drivers/infiniband/hw/amso1100/c2_provider.c b/drivers/infiniband/hw/amso1100/c2_provider.c
index bdf3507..d396c39 100644
--- a/drivers/infiniband/hw/amso1100/c2_provider.c
+++ b/drivers/infiniband/hw/amso1100/c2_provider.c
@@ -757,6 +757,23 @@
 	return netdev;
 }
 
+static int c2_port_immutable(struct ib_device *ibdev, u8 port_num,
+			     struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = c2_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
+
+	return 0;
+}
+
 int c2_register_device(struct c2_dev *dev)
 {
 	int ret = -ENOMEM;
@@ -820,6 +837,7 @@
 	dev->ibdev.reg_phys_mr = c2_reg_phys_mr;
 	dev->ibdev.reg_user_mr = c2_reg_user_mr;
 	dev->ibdev.dereg_mr = c2_dereg_mr;
+	dev->ibdev.get_port_immutable = c2_port_immutable;
 
 	dev->ibdev.alloc_fmr = NULL;
 	dev->ibdev.unmap_fmr = NULL;
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index 811b24a..061ef08 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -1343,6 +1343,23 @@
 	&dev_attr_board_id,
 };
 
+static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
+			       struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = iwch_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
+
+	return 0;
+}
+
 int iwch_register_device(struct iwch_dev *dev)
 {
 	int ret;
@@ -1420,6 +1437,7 @@
 	dev->ibdev.post_recv = iwch_post_receive;
 	dev->ibdev.get_protocol_stats = iwch_get_mib;
 	dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
+	dev->ibdev.get_port_immutable = iwch_port_immutable;
 
 	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 	if (!dev->ibdev.iwcm)
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 66bd6a2..ef08a9f 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -465,6 +465,23 @@
 	&dev_attr_board_id,
 };
 
+static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num,
+			       struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = c4iw_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
+
+	return 0;
+}
+
 int c4iw_register_device(struct c4iw_dev *dev)
 {
 	int ret;
@@ -542,6 +559,7 @@
 	dev->ibdev.post_recv = c4iw_post_receive;
 	dev->ibdev.get_protocol_stats = c4iw_get_mib;
 	dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
+	dev->ibdev.get_port_immutable = c4iw_port_immutable;
 
 	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 	if (!dev->ibdev.iwcm)
diff --git a/drivers/infiniband/hw/ehca/ehca_iverbs.h b/drivers/infiniband/hw/ehca/ehca_iverbs.h
index 22f79af..077185b 100644
--- a/drivers/infiniband/hw/ehca/ehca_iverbs.h
+++ b/drivers/infiniband/hw/ehca/ehca_iverbs.h
@@ -49,6 +49,9 @@
 int ehca_query_port(struct ib_device *ibdev, u8 port,
 		    struct ib_port_attr *props);
 
+enum rdma_protocol_type
+ehca_query_protocol(struct ib_device *device, u8 port_num);
+
 int ehca_query_sma_attr(struct ehca_shca *shca, u8 port,
 			struct ehca_sma_attr *attr);
 
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index cd8d290..5e30b72 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -431,6 +431,23 @@
 	return ret;
 }
 
+static int ehca_port_immutable(struct ib_device *ibdev, u8 port_num,
+			       struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = ehca_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
+
+	return 0;
+}
+
 static int ehca_init_device(struct ehca_shca *shca)
 {
 	int ret;
@@ -510,6 +527,7 @@
 	shca->ib_device.process_mad	    = ehca_process_mad;
 	shca->ib_device.mmap		    = ehca_mmap;
 	shca->ib_device.dma_ops		    = &ehca_dma_mapping_ops;
+	shca->ib_device.get_port_immutable  = ehca_port_immutable;
 
 	if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
 		shca->ib_device.uverbs_cmd_mask |=
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c
index 44ea939..764081d 100644
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c
@@ -1980,6 +1980,23 @@
 	return 0;
 }
 
+static int ipath_port_immutable(struct ib_device *ibdev, u8 port_num,
+			        struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = ipath_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
+
+	return 0;
+}
+
 /**
  * ipath_register_ib_device - register our device with the infiniband core
  * @dd: the device data structure
@@ -2179,6 +2196,7 @@
 	dev->process_mad = ipath_process_mad;
 	dev->mmap = ipath_mmap;
 	dev->dma_ops = &ipath_dma_mapping_ops;
+	dev->get_port_immutable = ipath_port_immutable;
 
 	snprintf(dev->node_desc, sizeof(dev->node_desc),
 		 IPATH_IDSTR " %s", init_utsname()->nodename);
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index cc64400..c49dd0b 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2114,6 +2114,27 @@
 	kfree(ibdev->eq_table);
 }
 
+static int mlx4_port_immutable(struct ib_device *ibdev, u8 port_num,
+			       struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = mlx4_ib_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+
+	if (mlx4_ib_port_link_layer(ibdev, port_num) == IB_LINK_LAYER_INFINIBAND)
+		immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
+	else
+		immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
+
+	return 0;
+}
+
 static void *mlx4_ib_add(struct mlx4_dev *dev)
 {
 	struct mlx4_ib_dev *ibdev;
@@ -2241,6 +2262,7 @@
 	ibdev->ib_dev.attach_mcast	= mlx4_ib_mcg_attach;
 	ibdev->ib_dev.detach_mcast	= mlx4_ib_mcg_detach;
 	ibdev->ib_dev.process_mad	= mlx4_ib_process_mad;
+	ibdev->ib_dev.get_port_immutable = mlx4_port_immutable;
 
 	if (!mlx4_is_slave(ibdev->dev)) {
 		ibdev->ib_dev.alloc_fmr		= mlx4_ib_fmr_alloc;
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 57c9809..b2fdb9c 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1182,6 +1182,23 @@
 	mlx5_ib_dealloc_pd(devr->p0);
 }
 
+static int mlx5_port_immutable(struct ib_device *ibdev, u8 port_num,
+			       struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = mlx5_ib_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
+
+	return 0;
+}
+
 static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 {
 	struct mlx5_ib_dev *dev;
@@ -1285,6 +1302,7 @@
 	dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
 	dev->ib_dev.free_fast_reg_page_list  = mlx5_ib_free_fast_reg_page_list;
 	dev->ib_dev.check_mr_status	= mlx5_ib_check_mr_status;
+	dev->ib_dev.get_port_immutable  = mlx5_port_immutable;
 
 	mlx5_ib_internal_query_odp_caps(dev);
 
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index 415f8e1..509d59e 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -1244,6 +1244,23 @@
 	return err;
 }
 
+static int mthca_port_immutable(struct ib_device *ibdev, u8 port_num,
+			        struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = mthca_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
+
+	return 0;
+}
+
 int mthca_register_device(struct mthca_dev *dev)
 {
 	int ret;
@@ -1323,6 +1340,7 @@
 	dev->ib_dev.reg_phys_mr          = mthca_reg_phys_mr;
 	dev->ib_dev.reg_user_mr          = mthca_reg_user_mr;
 	dev->ib_dev.dereg_mr             = mthca_dereg_mr;
+	dev->ib_dev.get_port_immutable   = mthca_port_immutable;
 
 	if (dev->mthca_flags & MTHCA_FLAG_FMR) {
 		dev->ib_dev.alloc_fmr            = mthca_alloc_fmr;
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index c0d0296..05530e3 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -606,7 +606,6 @@
 	return 0;
 }
 
-
 /**
  * nes_query_pkey
  */
@@ -3828,6 +3827,22 @@
 	return 0;
 }
 
+static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
+			      struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = nes_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
+
+	return 0;
+}
 
 /**
  * nes_init_ofa_device
@@ -3928,6 +3943,7 @@
 	nesibdev->ibdev.iwcm->reject = nes_reject;
 	nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
 	nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
+	nesibdev->ibdev.get_port_immutable   = nes_port_immutable;
 
 	return nesibdev;
 }
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 7a2b59a..f552898 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -202,6 +202,23 @@
 	return IB_LINK_LAYER_ETHERNET;
 }
 
+static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
+			         struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = ocrdma_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
+
+	return 0;
+}
+
 static int ocrdma_register_device(struct ocrdma_dev *dev)
 {
 	strlcpy(dev->ibdev.name, "ocrdma%d", IB_DEVICE_NAME_MAX);
@@ -286,6 +303,7 @@
 	dev->ibdev.dma_device = &dev->nic_info.pdev->dev;
 
 	dev->ibdev.process_mad = ocrdma_process_mad;
+	dev->ibdev.get_port_immutable = ocrdma_port_immutable;
 
 	if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
 		dev->ibdev.uverbs_cmd_mask |=
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
index b8f7853..3cdc81e 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
@@ -41,6 +41,9 @@
 int ocrdma_modify_port(struct ib_device *, u8 port, int mask,
 		       struct ib_port_modify *props);
 
+enum rdma_protocol_type
+ocrdma_query_protocol(struct ib_device *device, u8 port_num);
+
 void ocrdma_get_guid(struct ocrdma_dev *, u8 *guid);
 int ocrdma_query_gid(struct ib_device *, u8 port,
 		     int index, union ib_gid *gid);
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 4a35998..dba1c92 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -2040,6 +2040,23 @@
 	RCU_INIT_POINTER(ibp->qp1, NULL);
 }
 
+static int qib_port_immutable(struct ib_device *ibdev, u8 port_num,
+			      struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = qib_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_IB;
+
+	return 0;
+}
+
 /**
  * qib_register_ib_device - register our device with the infiniband core
  * @dd: the device data structure
@@ -2227,6 +2244,7 @@
 	ibdev->process_mad = qib_process_mad;
 	ibdev->mmap = qib_mmap;
 	ibdev->dma_ops = &qib_dma_mapping_ops;
+	ibdev->get_port_immutable = qib_port_immutable;
 
 	snprintf(ibdev->node_desc, sizeof(ibdev->node_desc),
 		 "Intel Infiniband HCA %s", init_utsname()->nodename);
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
index 0d0f986..34c49b8 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_main.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -300,6 +300,22 @@
 };
 /* End of inet section*/
 
+static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num,
+			        struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = usnic_ib_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+
+	return 0;
+}
+
 /* Start of PF discovery section */
 static void *usnic_ib_device_add(struct pci_dev *dev)
 {
@@ -383,6 +399,7 @@
 	us_ibdev->ib_dev.poll_cq = usnic_ib_poll_cq;
 	us_ibdev->ib_dev.req_notify_cq = usnic_ib_req_notify_cq;
 	us_ibdev->ib_dev.get_dma_mr = usnic_ib_get_dma_mr;
+	us_ibdev->ib_dev.get_port_immutable = usnic_port_immutable;
 
 
 	if (ib_register_device(&us_ibdev->ib_dev, NULL))
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.h b/drivers/infiniband/hw/usnic/usnic_ib_verbs.h
index bb864f5..57ddba5 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.h
+++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.h
@@ -27,6 +27,8 @@
 				struct ib_device_attr *props);
 int usnic_ib_query_port(struct ib_device *ibdev, u8 port,
 				struct ib_port_attr *props);
+enum rdma_protocol_type
+usnic_ib_query_protocol(struct ib_device *device, u8 port_num);
 int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
 				int qp_attr_mask,
 				struct ib_qp_init_attr *qp_init_attr);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 9e1b203..3421e42 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1685,9 +1685,7 @@
 	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 count = 0;
 
 	dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
 	if (!dev_list)
@@ -1704,15 +1702,21 @@
 	}
 
 	for (p = s; p <= e; ++p) {
-		if (rdma_port_get_link_layer(device, p) != IB_LINK_LAYER_INFINIBAND)
+		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);
 }
 
@@ -1721,9 +1725,6 @@
 	struct ipoib_dev_priv *priv, *tmp;
 	struct list_head *dev_list;
 
-	if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
-		return;
-
 	dev_list = ib_get_client_data(device, &ipoib_client);
 	if (!dev_list)
 		return;
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index cc2dd35..d33c5c0 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -51,19 +51,22 @@
 
 static void iser_cq_event_callback(struct ib_event *cause, void *context)
 {
-	iser_err("got cq event %d \n", cause->event);
+	iser_err("cq event %s (%d)\n",
+		 ib_event_msg(cause->event), cause->event);
 }
 
 static void iser_qp_event_callback(struct ib_event *cause, void *context)
 {
-	iser_err("got qp event %d\n",cause->event);
+	iser_err("qp event %s (%d)\n",
+		 ib_event_msg(cause->event), cause->event);
 }
 
 static void iser_event_handler(struct ib_event_handler *handler,
 				struct ib_event *event)
 {
-	iser_err("async event %d on device %s port %d\n", event->event,
-		event->device->name, event->element.port_num);
+	iser_err("async event %s (%d) on device %s port %d\n",
+		 ib_event_msg(event->event), event->event,
+		 event->device->name, event->element.port_num);
 }
 
 /**
@@ -873,8 +876,9 @@
 	int ret = 0;
 
 	iser_conn = (struct iser_conn *)cma_id->context;
-	iser_info("event %d status %d conn %p id %p\n",
-		  event->event, event->status, cma_id->context, cma_id);
+	iser_info("%s (%d): status %d conn %p id %p\n",
+		  rdma_event_msg(event->event), event->event,
+		  event->status, cma_id->context, cma_id);
 
 	mutex_lock(&iser_conn->state_mutex);
 	switch (event->event) {
@@ -913,7 +917,8 @@
 		}
 		break;
 	default:
-		iser_err("Unexpected RDMA CM event (%d)\n", event->event);
+		iser_err("Unexpected RDMA CM event: %s (%d)\n",
+			 rdma_event_msg(event->event), event->event);
 		break;
 	}
 	mutex_unlock(&iser_conn->state_mutex);
@@ -1173,10 +1178,13 @@
 		}
 	} else {
 		if (wc->status != IB_WC_WR_FLUSH_ERR)
-			iser_err("wr id %llx status %d vend_err %x\n",
-				 wc->wr_id, wc->status, wc->vendor_err);
+			iser_err("%s (%d): wr id %llx vend_err %x\n",
+				 ib_wc_status_msg(wc->status), wc->status,
+				 wc->wr_id, wc->vendor_err);
 		else
-			iser_dbg("flush error: wr id %llx\n", wc->wr_id);
+			iser_dbg("%s (%d): wr id %llx\n",
+				 ib_wc_status_msg(wc->status), wc->status,
+				 wc->wr_id);
 
 		if (wc->wr_id == ISER_BEACON_WRID)
 			/* all flush errors were consumed */
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 327529e..d99a0c8 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -78,7 +78,9 @@
 {
 	struct isert_conn *isert_conn = context;
 
-	isert_err("conn %p event: %d\n", isert_conn, e->event);
+	isert_err("%s (%d): conn %p\n",
+		  ib_event_msg(e->event), e->event, isert_conn);
+
 	switch (e->event) {
 	case IB_EVENT_COMM_EST:
 		rdma_notify(isert_conn->cm_id, IB_EVENT_COMM_EST);
@@ -897,7 +899,8 @@
 isert_np_cma_handler(struct isert_np *isert_np,
 		     enum rdma_cm_event_type event)
 {
-	isert_dbg("isert np %p, handling event %d\n", isert_np, event);
+	isert_dbg("%s (%d): isert np %p\n",
+		  rdma_event_msg(event), event, isert_np);
 
 	switch (event) {
 	case RDMA_CM_EVENT_DEVICE_REMOVAL:
@@ -957,7 +960,8 @@
 {
 	int ret = 0;
 
-	isert_info("event %d status %d id %p np %p\n", event->event,
+	isert_info("%s (%d): status %d id %p np %p\n",
+		   rdma_event_msg(event->event), event->event,
 		   event->status, cma_id, cma_id->context);
 
 	switch (event->event) {
@@ -2091,10 +2095,13 @@
 		}
 	} else {
 		if (wc->status != IB_WC_WR_FLUSH_ERR)
-			isert_err("wr id %llx status %d vend_err %x\n",
-				  wc->wr_id, wc->status, wc->vendor_err);
+			isert_err("%s (%d): wr id %llx vend_err %x\n",
+				  ib_wc_status_msg(wc->status), wc->status,
+				  wc->wr_id, wc->vendor_err);
 		else
-			isert_dbg("flush error: wr id %llx\n", wc->wr_id);
+			isert_dbg("%s (%d): wr id %llx\n",
+				  ib_wc_status_msg(wc->status), wc->status,
+				  wc->wr_id);
 
 		if (wc->wr_id != ISER_FASTREG_LI_WRID)
 			isert_cq_comp_err(isert_conn, wc);
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 06d91e7..c3f654d 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -254,7 +254,8 @@
 
 static void srp_qp_event(struct ib_event *event, void *context)
 {
-	pr_debug("QP event %d\n", event->event);
+	pr_debug("QP event %s (%d)\n",
+		 ib_event_msg(event->event), event->event);
 }
 
 static int srp_init_qp(struct srp_target_port *target,
@@ -1922,17 +1923,18 @@
 	if (ch->connected && !target->qp_in_error) {
 		if (wr_id & LOCAL_INV_WR_ID_MASK) {
 			shost_printk(KERN_ERR, target->scsi_host, PFX
-				     "LOCAL_INV failed with status %d\n",
-				     wc_status);
+				     "LOCAL_INV failed with status %s (%d)\n",
+				     ib_wc_status_msg(wc_status), wc_status);
 		} else if (wr_id & FAST_REG_WR_ID_MASK) {
 			shost_printk(KERN_ERR, target->scsi_host, PFX
-				     "FAST_REG_MR failed status %d\n",
-				     wc_status);
+				     "FAST_REG_MR failed status %s (%d)\n",
+				     ib_wc_status_msg(wc_status), wc_status);
 		} else {
 			shost_printk(KERN_ERR, target->scsi_host,
-				     PFX "failed %s status %d for iu %p\n",
+				     PFX "failed %s status %s (%d) for iu %p\n",
 				     send_err ? "send" : "receive",
-				     wc_status, (void *)(uintptr_t)wr_id);
+				     ib_wc_status_msg(wc_status), wc_status,
+				     (void *)(uintptr_t)wr_id);
 		}
 		queue_work(system_long_wq, &target->tl_err_work);
 	}
diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h
index 9bb99e9..c0ea51f 100644
--- a/include/rdma/ib_mad.h
+++ b/include/rdma/ib_mad.h
@@ -263,7 +263,7 @@
  * ib_response_mad - Returns if the specified MAD has been generated in
  *   response to a sent request or trap.
  */
-int ib_response_mad(struct ib_mad *mad);
+int ib_response_mad(const struct ib_mad_hdr *hdr);
 
 /**
  * ib_get_rmpp_resptime - Returns the RMPP response time.
@@ -675,6 +675,6 @@
  * @agent: the agent in question
  * @return: true if agent is performing rmpp, false otherwise.
  */
-int ib_mad_kernel_rmpp_agent(struct ib_mad_agent *agent);
+int ib_mad_kernel_rmpp_agent(const struct ib_mad_agent *agent);
 
 #endif /* IB_MAD_H */
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 65994a1..ad499bd 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -81,6 +81,13 @@
 	RDMA_TRANSPORT_USNIC_UDP
 };
 
+enum rdma_protocol_type {
+	RDMA_PROTOCOL_IB,
+	RDMA_PROTOCOL_IBOE,
+	RDMA_PROTOCOL_IWARP,
+	RDMA_PROTOCOL_USNIC_UDP
+};
+
 __attribute_const__ enum rdma_transport_type
 rdma_node_get_transport(enum rdma_node_type node_type);
 
@@ -346,6 +353,40 @@
 	struct iw_protocol_stats	iw;
 };
 
+/* Define bits for the various functionality this port needs to be supported by
+ * the core.
+ */
+/* Management                           0x00000FFF */
+#define RDMA_CORE_CAP_IB_MAD            0x00000001
+#define RDMA_CORE_CAP_IB_SMI            0x00000002
+#define RDMA_CORE_CAP_IB_CM             0x00000004
+#define RDMA_CORE_CAP_IW_CM             0x00000008
+#define RDMA_CORE_CAP_IB_SA             0x00000010
+
+/* Address format                       0x000FF000 */
+#define RDMA_CORE_CAP_AF_IB             0x00001000
+#define RDMA_CORE_CAP_ETH_AH            0x00002000
+
+/* Protocol                             0xFFF00000 */
+#define RDMA_CORE_CAP_PROT_IB           0x00100000
+#define RDMA_CORE_CAP_PROT_ROCE         0x00200000
+#define RDMA_CORE_CAP_PROT_IWARP        0x00400000
+
+#define RDMA_CORE_PORT_IBA_IB          (RDMA_CORE_CAP_PROT_IB  \
+					| RDMA_CORE_CAP_IB_MAD \
+					| RDMA_CORE_CAP_IB_SMI \
+					| RDMA_CORE_CAP_IB_CM  \
+					| RDMA_CORE_CAP_IB_SA  \
+					| RDMA_CORE_CAP_AF_IB)
+#define RDMA_CORE_PORT_IBA_ROCE        (RDMA_CORE_CAP_PROT_ROCE \
+					| RDMA_CORE_CAP_IB_MAD  \
+					| RDMA_CORE_CAP_IB_CM   \
+					| RDMA_CORE_CAP_IB_SA   \
+					| RDMA_CORE_CAP_AF_IB   \
+					| RDMA_CORE_CAP_ETH_AH)
+#define RDMA_CORE_PORT_IWARP           (RDMA_CORE_CAP_PROT_IWARP \
+					| RDMA_CORE_CAP_IW_CM)
+
 struct ib_port_attr {
 	enum ib_port_state	state;
 	enum ib_mtu		max_mtu;
@@ -412,6 +453,8 @@
 	IB_EVENT_GID_CHANGE,
 };
 
+__attribute_const__ const char *ib_event_msg(enum ib_event_type event);
+
 struct ib_event {
 	struct ib_device	*device;
 	union {
@@ -663,6 +706,8 @@
 	IB_WC_GENERAL_ERR
 };
 
+__attribute_const__ const char *ib_wc_status_msg(enum ib_wc_status status);
+
 enum ib_wc_opcode {
 	IB_WC_SEND,
 	IB_WC_RDMA_WRITE,
@@ -1474,6 +1519,12 @@
 
 struct iw_cm_verbs;
 
+struct ib_port_immutable {
+	int                           pkey_tbl_len;
+	int                           gid_tbl_len;
+	u32                           core_cap_flags;
+};
+
 struct ib_device {
 	struct device                *dma_device;
 
@@ -1487,8 +1538,10 @@
 	struct list_head              client_data_list;
 
 	struct ib_cache               cache;
-	int                          *pkey_tbl_len;
-	int                          *gid_tbl_len;
+	/**
+	 * port_immutable is indexed by port number
+	 */
+	struct ib_port_immutable     *port_immutable;
 
 	int			      num_comp_vectors;
 
@@ -1675,6 +1728,14 @@
 	u32			     local_dma_lkey;
 	u8                           node_type;
 	u8                           phys_port_cnt;
+
+	/**
+	 * The following mandatory functions are used only at device
+	 * registration.  Keep functions such as these at the end of this
+	 * structure to avoid cache line misses when accessing struct ib_device
+	 * in fast paths.
+	 */
+	int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
 };
 
 struct ib_client {
@@ -1743,6 +1804,242 @@
 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
 					       u8 port_num);
 
+/**
+ * rdma_start_port - Return the first valid port number for the device
+ * specified
+ *
+ * @device: Device to be checked
+ *
+ * Return start port number
+ */
+static inline u8 rdma_start_port(const struct ib_device *device)
+{
+	return (device->node_type == RDMA_NODE_IB_SWITCH) ? 0 : 1;
+}
+
+/**
+ * rdma_end_port - Return the last valid port number for the device
+ * specified
+ *
+ * @device: Device to be checked
+ *
+ * Return last port number
+ */
+static inline u8 rdma_end_port(const struct ib_device *device)
+{
+	return (device->node_type == RDMA_NODE_IB_SWITCH) ?
+		0 : device->phys_port_cnt;
+}
+
+static inline bool rdma_protocol_ib(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
+}
+
+static inline bool rdma_protocol_roce(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
+}
+
+static inline bool rdma_protocol_iwarp(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
+}
+
+static inline bool rdma_ib_or_roce(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags &
+		(RDMA_CORE_CAP_PROT_IB | RDMA_CORE_CAP_PROT_ROCE);
+}
+
+/**
+ * rdma_cap_ib_mad - Check if the port of a device supports Infiniband
+ * Management Datagrams.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * Management Datagrams (MAD) are a required part of the InfiniBand
+ * specification and are supported on all InfiniBand devices.  A slightly
+ * extended version are also supported on OPA interfaces.
+ *
+ * Return: true if the port supports sending/receiving of MAD packets.
+ */
+static inline bool rdma_cap_ib_mad(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
+}
+
+/**
+ * rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
+ * Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * Each InfiniBand node is required to provide a Subnet Management Agent
+ * that the subnet manager can access.  Prior to the fabric being fully
+ * configured by the subnet manager, the SMA is accessed via a well known
+ * interface called the Subnet Management Interface (SMI).  This interface
+ * uses directed route packets to communicate with the SM to get around the
+ * chicken and egg problem of the SM needing to know what's on the fabric
+ * in order to configure the fabric, and needing to configure the fabric in
+ * order to send packets to the devices on the fabric.  These directed
+ * route packets do not need the fabric fully configured in order to reach
+ * their destination.  The SMI is the only method allowed to send
+ * directed route packets on an InfiniBand fabric.
+ *
+ * Return: true if the port provides an SMI.
+ */
+static inline bool rdma_cap_ib_smi(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
+}
+
+/**
+ * rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
+ * Communication Manager.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * The InfiniBand Communication Manager is one of many pre-defined General
+ * Service Agents (GSA) that are accessed via the General Service
+ * Interface (GSI).  It's role is to facilitate establishment of connections
+ * between nodes as well as other management related tasks for established
+ * connections.
+ *
+ * Return: true if the port supports an IB CM (this does not guarantee that
+ * a CM is actually running however).
+ */
+static inline bool rdma_cap_ib_cm(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
+}
+
+/**
+ * rdma_cap_iw_cm - Check if the port of device has the capability IWARP
+ * Communication Manager.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * Similar to above, but specific to iWARP connections which have a different
+ * managment protocol than InfiniBand.
+ *
+ * Return: true if the port supports an iWARP CM (this does not guarantee that
+ * a CM is actually running however).
+ */
+static inline bool rdma_cap_iw_cm(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
+}
+
+/**
+ * rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
+ * Subnet Administration.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * An InfiniBand Subnet Administration (SA) service is a pre-defined General
+ * Service Agent (GSA) provided by the Subnet Manager (SM).  On InfiniBand
+ * fabrics, devices should resolve routes to other hosts by contacting the
+ * SA to query the proper route.
+ *
+ * Return: true if the port should act as a client to the fabric Subnet
+ * Administration interface.  This does not imply that the SA service is
+ * running locally.
+ */
+static inline bool rdma_cap_ib_sa(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
+}
+
+/**
+ * rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
+ * Multicast.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * InfiniBand multicast registration is more complex than normal IPv4 or
+ * IPv6 multicast registration.  Each Host Channel Adapter must register
+ * with the Subnet Manager when it wishes to join a multicast group.  It
+ * should do so only once regardless of how many queue pairs it subscribes
+ * to this group.  And it should leave the group only after all queue pairs
+ * attached to the group have been detached.
+ *
+ * Return: true if the port must undertake the additional adminstrative
+ * overhead of registering/unregistering with the SM and tracking of the
+ * total number of queue pairs attached to the multicast group.
+ */
+static inline bool rdma_cap_ib_mcast(struct ib_device *device, u8 port_num)
+{
+	return rdma_cap_ib_sa(device, port_num);
+}
+
+/**
+ * rdma_cap_af_ib - Check if the port of device has the capability
+ * Native Infiniband Address.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
+ * GID.  RoCE uses a different mechanism, but still generates a GID via
+ * a prescribed mechanism and port specific data.
+ *
+ * Return: true if the port uses a GID address to identify devices on the
+ * network.
+ */
+static inline bool rdma_cap_af_ib(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
+}
+
+/**
+ * rdma_cap_eth_ah - Check if the port of device has the capability
+ * Ethernet Address Handle.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * RoCE is InfiniBand over Ethernet, and it uses a well defined technique
+ * to fabricate GIDs over Ethernet/IP specific addresses native to the
+ * port.  Normally, packet headers are generated by the sending host
+ * adapter, but when sending connectionless datagrams, we must manually
+ * inject the proper headers for the fabric we are communicating over.
+ *
+ * Return: true if we are running as a RoCE port and must force the
+ * addition of a Global Route Header built from our Ethernet Address
+ * Handle into our header list for connectionless packets.
+ */
+static inline bool rdma_cap_eth_ah(struct ib_device *device, u8 port_num)
+{
+	return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
+}
+
+/**
+ * rdma_cap_read_multi_sge - Check if the port of device has the capability
+ * RDMA Read Multiple Scatter-Gather Entries.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * iWARP has a restriction that RDMA READ requests may only have a single
+ * Scatter/Gather Entry (SGE) in the work request.
+ *
+ * NOTE: although the linux kernel currently assumes all devices are either
+ * single SGE RDMA READ devices or identical SGE maximums for RDMA READs and
+ * WRITEs, according to Tom Talpey, this is not accurate.  There are some
+ * devices out there that support more than a single SGE on RDMA READ
+ * requests, but do not support the same number of SGEs as they do on
+ * RDMA WRITE requests.  The linux kernel would need rearchitecting to
+ * support these imbalanced READ/WRITE SGEs allowed devices.  So, for now,
+ * suffice with either the device supports the same READ/WRITE SGEs, or
+ * it only gets one READ sge.
+ *
+ * Return: true for any device that allows more than one SGE in RDMA READ
+ * requests.
+ */
+static inline bool rdma_cap_read_multi_sge(struct ib_device *device,
+					   u8 port_num)
+{
+	return !(device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP);
+}
+
 int ib_query_gid(struct ib_device *device,
 		 u8 port_num, int index, union ib_gid *gid);
 
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
index 1ed2088..c92522c 100644
--- a/include/rdma/rdma_cm.h
+++ b/include/rdma/rdma_cm.h
@@ -62,6 +62,8 @@
 	RDMA_CM_EVENT_TIMEWAIT_EXIT
 };
 
+__attribute_const__ const char *rdma_event_msg(enum rdma_cm_event_type event);
+
 enum rdma_port_space {
 	RDMA_PS_SDP   = 0x0001,
 	RDMA_PS_IPOIB = 0x0002,
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index 1044337..11b623c 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -40,15 +40,6 @@
 
 #include "rds.h"
 
-char *rds_str_array(char **array, size_t elements, size_t index)
-{
-	if ((index < elements) && array[index])
-		return array[index];
-	else
-		return "unknown";
-}
-EXPORT_SYMBOL(rds_str_array);
-
 /* this is just used for stats gathering :/ */
 static DEFINE_SPINLOCK(rds_sock_lock);
 static unsigned long rds_sock_count;
diff --git a/net/rds/ib.h b/net/rds/ib.h
index c36d713..333611d 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -339,7 +339,6 @@
 extern wait_queue_head_t rds_ib_ring_empty_wait;
 
 /* ib_send.c */
-char *rds_ib_wc_status_str(enum ib_wc_status status);
 void rds_ib_xmit_complete(struct rds_connection *conn);
 int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm,
 		unsigned int hdr_off, unsigned int sg, unsigned int off);
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index 8a09ee7..b8d1bda 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -39,36 +39,6 @@
 #include "rds.h"
 #include "ib.h"
 
-static char *rds_ib_event_type_strings[] = {
-#define RDS_IB_EVENT_STRING(foo) \
-		[IB_EVENT_##foo] = __stringify(IB_EVENT_##foo)
-	RDS_IB_EVENT_STRING(CQ_ERR),
-	RDS_IB_EVENT_STRING(QP_FATAL),
-	RDS_IB_EVENT_STRING(QP_REQ_ERR),
-	RDS_IB_EVENT_STRING(QP_ACCESS_ERR),
-	RDS_IB_EVENT_STRING(COMM_EST),
-	RDS_IB_EVENT_STRING(SQ_DRAINED),
-	RDS_IB_EVENT_STRING(PATH_MIG),
-	RDS_IB_EVENT_STRING(PATH_MIG_ERR),
-	RDS_IB_EVENT_STRING(DEVICE_FATAL),
-	RDS_IB_EVENT_STRING(PORT_ACTIVE),
-	RDS_IB_EVENT_STRING(PORT_ERR),
-	RDS_IB_EVENT_STRING(LID_CHANGE),
-	RDS_IB_EVENT_STRING(PKEY_CHANGE),
-	RDS_IB_EVENT_STRING(SM_CHANGE),
-	RDS_IB_EVENT_STRING(SRQ_ERR),
-	RDS_IB_EVENT_STRING(SRQ_LIMIT_REACHED),
-	RDS_IB_EVENT_STRING(QP_LAST_WQE_REACHED),
-	RDS_IB_EVENT_STRING(CLIENT_REREGISTER),
-#undef RDS_IB_EVENT_STRING
-};
-
-static char *rds_ib_event_str(enum ib_event_type type)
-{
-	return rds_str_array(rds_ib_event_type_strings,
-			     ARRAY_SIZE(rds_ib_event_type_strings), type);
-};
-
 /*
  * Set the selected protocol version
  */
@@ -243,7 +213,7 @@
 static void rds_ib_cq_event_handler(struct ib_event *event, void *data)
 {
 	rdsdebug("event %u (%s) data %p\n",
-		 event->event, rds_ib_event_str(event->event), data);
+		 event->event, ib_event_msg(event->event), data);
 }
 
 static void rds_ib_qp_event_handler(struct ib_event *event, void *data)
@@ -252,7 +222,7 @@
 	struct rds_ib_connection *ic = conn->c_transport_data;
 
 	rdsdebug("conn %p ic %p event %u (%s)\n", conn, ic, event->event,
-		 rds_ib_event_str(event->event));
+		 ib_event_msg(event->event));
 
 	switch (event->event) {
 	case IB_EVENT_COMM_EST:
@@ -261,7 +231,7 @@
 	default:
 		rdsdebug("Fatal QP Event %u (%s) "
 			"- connection %pI4->%pI4, reconnecting\n",
-			event->event, rds_ib_event_str(event->event),
+			event->event, ib_event_msg(event->event),
 			&conn->c_laddr, &conn->c_faddr);
 		rds_conn_drop(conn);
 		break;
diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 1b981a4..cac5b45 100644
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -956,7 +956,7 @@
 	while (ib_poll_cq(ic->i_recv_cq, 1, &wc) > 0) {
 		rdsdebug("wc wr_id 0x%llx status %u (%s) byte_len %u imm_data %u\n",
 			 (unsigned long long)wc.wr_id, wc.status,
-			 rds_ib_wc_status_str(wc.status), wc.byte_len,
+			 ib_wc_status_msg(wc.status), wc.byte_len,
 			 be32_to_cpu(wc.ex.imm_data));
 		rds_ib_stats_inc(s_ib_rx_cq_event);
 
@@ -978,7 +978,7 @@
 						  "status %u (%s), disconnecting and "
 						  "reconnecting\n", &conn->c_faddr,
 						  wc.status,
-						  rds_ib_wc_status_str(wc.status));
+						  ib_wc_status_msg(wc.status));
 		}
 
 		/*
diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c
index bd3825d..25d0482 100644
--- a/net/rds/ib_send.c
+++ b/net/rds/ib_send.c
@@ -39,40 +39,6 @@
 #include "rds.h"
 #include "ib.h"
 
-static char *rds_ib_wc_status_strings[] = {
-#define RDS_IB_WC_STATUS_STR(foo) \
-		[IB_WC_##foo] = __stringify(IB_WC_##foo)
-	RDS_IB_WC_STATUS_STR(SUCCESS),
-	RDS_IB_WC_STATUS_STR(LOC_LEN_ERR),
-	RDS_IB_WC_STATUS_STR(LOC_QP_OP_ERR),
-	RDS_IB_WC_STATUS_STR(LOC_EEC_OP_ERR),
-	RDS_IB_WC_STATUS_STR(LOC_PROT_ERR),
-	RDS_IB_WC_STATUS_STR(WR_FLUSH_ERR),
-	RDS_IB_WC_STATUS_STR(MW_BIND_ERR),
-	RDS_IB_WC_STATUS_STR(BAD_RESP_ERR),
-	RDS_IB_WC_STATUS_STR(LOC_ACCESS_ERR),
-	RDS_IB_WC_STATUS_STR(REM_INV_REQ_ERR),
-	RDS_IB_WC_STATUS_STR(REM_ACCESS_ERR),
-	RDS_IB_WC_STATUS_STR(REM_OP_ERR),
-	RDS_IB_WC_STATUS_STR(RETRY_EXC_ERR),
-	RDS_IB_WC_STATUS_STR(RNR_RETRY_EXC_ERR),
-	RDS_IB_WC_STATUS_STR(LOC_RDD_VIOL_ERR),
-	RDS_IB_WC_STATUS_STR(REM_INV_RD_REQ_ERR),
-	RDS_IB_WC_STATUS_STR(REM_ABORT_ERR),
-	RDS_IB_WC_STATUS_STR(INV_EECN_ERR),
-	RDS_IB_WC_STATUS_STR(INV_EEC_STATE_ERR),
-	RDS_IB_WC_STATUS_STR(FATAL_ERR),
-	RDS_IB_WC_STATUS_STR(RESP_TIMEOUT_ERR),
-	RDS_IB_WC_STATUS_STR(GENERAL_ERR),
-#undef RDS_IB_WC_STATUS_STR
-};
-
-char *rds_ib_wc_status_str(enum ib_wc_status status)
-{
-	return rds_str_array(rds_ib_wc_status_strings,
-			     ARRAY_SIZE(rds_ib_wc_status_strings), status);
-}
-
 /*
  * Convert IB-specific error message to RDS error message and call core
  * completion handler.
@@ -293,7 +259,7 @@
 	while (ib_poll_cq(cq, 1, &wc) > 0) {
 		rdsdebug("wc wr_id 0x%llx status %u (%s) byte_len %u imm_data %u\n",
 			 (unsigned long long)wc.wr_id, wc.status,
-			 rds_ib_wc_status_str(wc.status), wc.byte_len,
+			 ib_wc_status_msg(wc.status), wc.byte_len,
 			 be32_to_cpu(wc.ex.imm_data));
 		rds_ib_stats_inc(s_ib_tx_cq_event);
 
@@ -344,7 +310,7 @@
 			rds_ib_conn_error(conn, "send completion on %pI4 had status "
 					  "%u (%s), disconnecting and reconnecting\n",
 					  &conn->c_faddr, wc.status,
-					  rds_ib_wc_status_str(wc.status));
+					  ib_wc_status_msg(wc.status));
 		}
 	}
 }
diff --git a/net/rds/rdma_transport.c b/net/rds/rdma_transport.c
index 6cd9d1d..2082408 100644
--- a/net/rds/rdma_transport.c
+++ b/net/rds/rdma_transport.c
@@ -37,34 +37,6 @@
 
 static struct rdma_cm_id *rds_rdma_listen_id;
 
-static char *rds_cm_event_strings[] = {
-#define RDS_CM_EVENT_STRING(foo) \
-		[RDMA_CM_EVENT_##foo] = __stringify(RDMA_CM_EVENT_##foo)
-	RDS_CM_EVENT_STRING(ADDR_RESOLVED),
-	RDS_CM_EVENT_STRING(ADDR_ERROR),
-	RDS_CM_EVENT_STRING(ROUTE_RESOLVED),
-	RDS_CM_EVENT_STRING(ROUTE_ERROR),
-	RDS_CM_EVENT_STRING(CONNECT_REQUEST),
-	RDS_CM_EVENT_STRING(CONNECT_RESPONSE),
-	RDS_CM_EVENT_STRING(CONNECT_ERROR),
-	RDS_CM_EVENT_STRING(UNREACHABLE),
-	RDS_CM_EVENT_STRING(REJECTED),
-	RDS_CM_EVENT_STRING(ESTABLISHED),
-	RDS_CM_EVENT_STRING(DISCONNECTED),
-	RDS_CM_EVENT_STRING(DEVICE_REMOVAL),
-	RDS_CM_EVENT_STRING(MULTICAST_JOIN),
-	RDS_CM_EVENT_STRING(MULTICAST_ERROR),
-	RDS_CM_EVENT_STRING(ADDR_CHANGE),
-	RDS_CM_EVENT_STRING(TIMEWAIT_EXIT),
-#undef RDS_CM_EVENT_STRING
-};
-
-static char *rds_cm_event_str(enum rdma_cm_event_type type)
-{
-	return rds_str_array(rds_cm_event_strings,
-			     ARRAY_SIZE(rds_cm_event_strings), type);
-};
-
 int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
 			      struct rdma_cm_event *event)
 {
@@ -74,7 +46,7 @@
 	int ret = 0;
 
 	rdsdebug("conn %p id %p handling event %u (%s)\n", conn, cm_id,
-		 event->event, rds_cm_event_str(event->event));
+		 event->event, rdma_event_msg(event->event));
 
 	if (cm_id->device->node_type == RDMA_NODE_RNIC)
 		trans = &rds_iw_transport;
@@ -139,7 +111,7 @@
 	default:
 		/* things like device disconnect? */
 		printk(KERN_ERR "RDS: unknown event %u (%s)!\n",
-		       event->event, rds_cm_event_str(event->event));
+		       event->event, rdma_event_msg(event->event));
 		break;
 	}
 
@@ -148,7 +120,7 @@
 		mutex_unlock(&conn->c_cm_lock);
 
 	rdsdebug("id %p event %u (%s) handling ret %d\n", cm_id, event->event,
-		 rds_cm_event_str(event->event), ret);
+		 rdma_event_msg(event->event), ret);
 
 	return ret;
 }
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 0d41155..099754c 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -575,7 +575,6 @@
 };
 
 /* af_rds.c */
-char *rds_str_array(char **array, size_t elements, size_t index);
 void rds_sock_addref(struct rds_sock *rs);
 void rds_sock_put(struct rds_sock *rs);
 void rds_wake_sk_sleep(struct rds_sock *rs);
diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index dff0481..d234521 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -128,8 +128,8 @@
 
 	/* WARNING: Only wr_id and status are reliable at this point */
 	r = (struct rpcrdma_mw *)(unsigned long)wc->wr_id;
-	dprintk("RPC:       %s: frmr %p (stale), status %d\n",
-		__func__, r, wc->status);
+	dprintk("RPC:       %s: frmr %p (stale), status %s (%d)\n",
+		__func__, r, ib_wc_status_msg(wc->status), wc->status);
 	r->r.frmr.fr_state = FRMR_IS_STALE;
 }
 
diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index f9f13a3..86b4416 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -117,8 +117,8 @@
 
 static int rdma_read_max_sge(struct svcxprt_rdma *xprt, int sge_count)
 {
-	if (rdma_node_get_transport(xprt->sc_cm_id->device->node_type) ==
-	     RDMA_TRANSPORT_IWARP)
+	if (!rdma_cap_read_multi_sge(xprt->sc_cm_id->device,
+				     xprt->sc_cm_id->port_num))
 		return 1;
 	else
 		return min_t(int, sge_count, xprt->sc_max_sge);
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index f609c1c..88eb994 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -175,8 +175,8 @@
 static void cq_event_handler(struct ib_event *event, void *context)
 {
 	struct svc_xprt *xprt = context;
-	dprintk("svcrdma: received CQ event id=%d, context=%p\n",
-		event->event, context);
+	dprintk("svcrdma: received CQ event %s (%d), context=%p\n",
+		ib_event_msg(event->event), event->event, context);
 	set_bit(XPT_CLOSE, &xprt->xpt_flags);
 }
 
@@ -191,8 +191,9 @@
 	case IB_EVENT_COMM_EST:
 	case IB_EVENT_SQ_DRAINED:
 	case IB_EVENT_QP_LAST_WQE_REACHED:
-		dprintk("svcrdma: QP event %d received for QP=%p\n",
-			event->event, event->element.qp);
+		dprintk("svcrdma: QP event %s (%d) received for QP=%p\n",
+			ib_event_msg(event->event), event->event,
+			event->element.qp);
 		break;
 	/* These are considered fatal events */
 	case IB_EVENT_PATH_MIG_ERR:
@@ -201,9 +202,10 @@
 	case IB_EVENT_QP_ACCESS_ERR:
 	case IB_EVENT_DEVICE_FATAL:
 	default:
-		dprintk("svcrdma: QP ERROR event %d received for QP=%p, "
+		dprintk("svcrdma: QP ERROR event %s (%d) received for QP=%p, "
 			"closing transport\n",
-			event->event, event->element.qp);
+			ib_event_msg(event->event), event->event,
+			event->element.qp);
 		set_bit(XPT_CLOSE, &xprt->xpt_flags);
 		break;
 	}
@@ -402,7 +404,8 @@
 		for (i = 0; i < ret; i++) {
 			wc = &wc_a[i];
 			if (wc->status != IB_WC_SUCCESS) {
-				dprintk("svcrdma: sq wc err status %d\n",
+				dprintk("svcrdma: sq wc err status %s (%d)\n",
+					ib_wc_status_msg(wc->status),
 					wc->status);
 
 				/* Close the transport */
@@ -616,7 +619,8 @@
 	switch (event->event) {
 	case RDMA_CM_EVENT_CONNECT_REQUEST:
 		dprintk("svcrdma: Connect request on cma_id=%p, xprt = %p, "
-			"event=%d\n", cma_id, cma_id->context, event->event);
+			"event = %s (%d)\n", cma_id, cma_id->context,
+			rdma_event_msg(event->event), event->event);
 		handle_connect_req(cma_id,
 				   event->param.conn.initiator_depth);
 		break;
@@ -636,7 +640,8 @@
 
 	default:
 		dprintk("svcrdma: Unexpected event on listening endpoint %p, "
-			"event=%d\n", cma_id, event->event);
+			"event = %s (%d)\n", cma_id,
+			rdma_event_msg(event->event), event->event);
 		break;
 	}
 
@@ -669,7 +674,8 @@
 		break;
 	case RDMA_CM_EVENT_DEVICE_REMOVAL:
 		dprintk("svcrdma: Device removal cma_id=%p, xprt = %p, "
-			"event=%d\n", cma_id, xprt, event->event);
+			"event = %s (%d)\n", cma_id, xprt,
+			rdma_event_msg(event->event), event->event);
 		if (xprt) {
 			set_bit(XPT_CLOSE, &xprt->xpt_flags);
 			svc_xprt_enqueue(xprt);
@@ -677,7 +683,8 @@
 		break;
 	default:
 		dprintk("svcrdma: Unexpected event on DTO endpoint %p, "
-			"event=%d\n", cma_id, event->event);
+			"event = %s (%d)\n", cma_id,
+			rdma_event_msg(event->event), event->event);
 		break;
 	}
 	return 0;
@@ -851,7 +858,7 @@
 	struct ib_qp_init_attr qp_attr;
 	struct ib_device_attr devattr;
 	int uninitialized_var(dma_mr_acc);
-	int need_dma_mr;
+	int need_dma_mr = 0;
 	int ret;
 	int i;
 
@@ -985,35 +992,26 @@
 	/*
 	 * Determine if a DMA MR is required and if so, what privs are required
 	 */
-	switch (rdma_node_get_transport(newxprt->sc_cm_id->device->node_type)) {
-	case RDMA_TRANSPORT_IWARP:
-		newxprt->sc_dev_caps |= SVCRDMA_DEVCAP_READ_W_INV;
-		if (!(newxprt->sc_dev_caps & SVCRDMA_DEVCAP_FAST_REG)) {
-			need_dma_mr = 1;
-			dma_mr_acc =
-				(IB_ACCESS_LOCAL_WRITE |
-				 IB_ACCESS_REMOTE_WRITE);
-		} else if (!(devattr.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) {
-			need_dma_mr = 1;
-			dma_mr_acc = IB_ACCESS_LOCAL_WRITE;
-		} else
-			need_dma_mr = 0;
-		break;
-	case RDMA_TRANSPORT_IB:
-		if (!(newxprt->sc_dev_caps & SVCRDMA_DEVCAP_FAST_REG)) {
-			need_dma_mr = 1;
-			dma_mr_acc = IB_ACCESS_LOCAL_WRITE;
-		} else if (!(devattr.device_cap_flags &
-			     IB_DEVICE_LOCAL_DMA_LKEY)) {
-			need_dma_mr = 1;
-			dma_mr_acc = IB_ACCESS_LOCAL_WRITE;
-		} else
-			need_dma_mr = 0;
-		break;
-	default:
+	if (!rdma_protocol_iwarp(newxprt->sc_cm_id->device,
+				 newxprt->sc_cm_id->port_num) &&
+	    !rdma_ib_or_roce(newxprt->sc_cm_id->device,
+			     newxprt->sc_cm_id->port_num))
 		goto errout;
+
+	if (!(newxprt->sc_dev_caps & SVCRDMA_DEVCAP_FAST_REG) ||
+	    !(devattr.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) {
+		need_dma_mr = 1;
+		dma_mr_acc = IB_ACCESS_LOCAL_WRITE;
+		if (rdma_protocol_iwarp(newxprt->sc_cm_id->device,
+					newxprt->sc_cm_id->port_num) &&
+		    !(newxprt->sc_dev_caps & SVCRDMA_DEVCAP_FAST_REG))
+			dma_mr_acc |= IB_ACCESS_REMOTE_WRITE;
 	}
 
+	if (rdma_protocol_iwarp(newxprt->sc_cm_id->device,
+				newxprt->sc_cm_id->port_num))
+		newxprt->sc_dev_caps |= SVCRDMA_DEVCAP_READ_W_INV;
+
 	/* Create the DMA MR if needed, otherwise, use the DMA LKEY */
 	if (need_dma_mr) {
 		/* Register all of physical memory */
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 4870d27..6f6b8a5 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -105,32 +105,6 @@
 
 static DECLARE_TASKLET(rpcrdma_tasklet_g, rpcrdma_run_tasklet, 0UL);
 
-static const char * const async_event[] = {
-	"CQ error",
-	"QP fatal error",
-	"QP request error",
-	"QP access error",
-	"communication established",
-	"send queue drained",
-	"path migration successful",
-	"path mig error",
-	"device fatal error",
-	"port active",
-	"port error",
-	"LID change",
-	"P_key change",
-	"SM change",
-	"SRQ error",
-	"SRQ limit reached",
-	"last WQE reached",
-	"client reregister",
-	"GID change",
-};
-
-#define ASYNC_MSG(status)					\
-	((status) < ARRAY_SIZE(async_event) ?			\
-		async_event[(status)] : "unknown async error")
-
 static void
 rpcrdma_schedule_tasklet(struct list_head *sched_list)
 {
@@ -148,7 +122,7 @@
 	struct rpcrdma_ep *ep = context;
 
 	pr_err("RPC:       %s: %s on device %s ep %p\n",
-	       __func__, ASYNC_MSG(event->event),
+	       __func__, ib_event_msg(event->event),
 		event->device->name, context);
 	if (ep->rep_connected == 1) {
 		ep->rep_connected = -EIO;
@@ -163,7 +137,7 @@
 	struct rpcrdma_ep *ep = context;
 
 	pr_err("RPC:       %s: %s on device %s ep %p\n",
-	       __func__, ASYNC_MSG(event->event),
+	       __func__, ib_event_msg(event->event),
 		event->device->name, context);
 	if (ep->rep_connected == 1) {
 		ep->rep_connected = -EIO;
@@ -172,35 +146,6 @@
 	}
 }
 
-static const char * const wc_status[] = {
-	"success",
-	"local length error",
-	"local QP operation error",
-	"local EE context operation error",
-	"local protection error",
-	"WR flushed",
-	"memory management operation error",
-	"bad response error",
-	"local access error",
-	"remote invalid request error",
-	"remote access error",
-	"remote operation error",
-	"transport retry counter exceeded",
-	"RNR retry counter exceeded",
-	"local RDD violation error",
-	"remove invalid RD request",
-	"operation aborted",
-	"invalid EE context number",
-	"invalid EE context state",
-	"fatal error",
-	"response timeout error",
-	"general error",
-};
-
-#define COMPLETION_MSG(status)					\
-	((status) < ARRAY_SIZE(wc_status) ?			\
-		wc_status[(status)] : "unexpected completion error")
-
 static void
 rpcrdma_sendcq_process_wc(struct ib_wc *wc)
 {
@@ -209,7 +154,7 @@
 		if (wc->status != IB_WC_SUCCESS &&
 		    wc->status != IB_WC_WR_FLUSH_ERR)
 			pr_err("RPC:       %s: SEND: %s\n",
-			       __func__, COMPLETION_MSG(wc->status));
+			       __func__, ib_wc_status_msg(wc->status));
 	} else {
 		struct rpcrdma_mw *r;
 
@@ -302,7 +247,7 @@
 out_fail:
 	if (wc->status != IB_WC_WR_FLUSH_ERR)
 		pr_err("RPC:       %s: rep %p: %s\n",
-		       __func__, rep, COMPLETION_MSG(wc->status));
+		       __func__, rep, ib_wc_status_msg(wc->status));
 	rep->rr_len = ~0U;
 	goto out_schedule;
 }
@@ -386,31 +331,6 @@
 		rpcrdma_sendcq_process_wc(&wc);
 }
 
-#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
-static const char * const conn[] = {
-	"address resolved",
-	"address error",
-	"route resolved",
-	"route error",
-	"connect request",
-	"connect response",
-	"connect error",
-	"unreachable",
-	"rejected",
-	"established",
-	"disconnected",
-	"device removal",
-	"multicast join",
-	"multicast error",
-	"address change",
-	"timewait exit",
-};
-
-#define CONNECTION_MSG(status)						\
-	((status) < ARRAY_SIZE(conn) ?					\
-		conn[(status)] : "unrecognized connection error")
-#endif
-
 static int
 rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event)
 {
@@ -476,7 +396,7 @@
 	default:
 		dprintk("RPC:       %s: %pIS:%u (ep 0x%p): %s\n",
 			__func__, sap, rpc_get_port(sap), ep,
-			CONNECTION_MSG(event->event));
+			rdma_event_msg(event->event));
 		break;
 	}