Initial import

1 files changed, 1448 insertions, 0 deletions

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
new file mode 100644
index 000000000..f93eb8da7
--- /dev/null
+++ b/drivers/infiniband/core/verbs.c
@@ -0,0 +1,1448 @@
+/*
+ * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
+ * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
+ * Copyright (c) 2004 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
+ * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_cache.h>
+#include <rdma/ib_addr.h>
+
+#include "core_priv.h"
+
+__attribute_const__ int ib_rate_to_mult(enum ib_rate rate)
+{
+	switch (rate) {
+	case IB_RATE_2_5_GBPS: return  1;
+	case IB_RATE_5_GBPS:   return  2;
+	case IB_RATE_10_GBPS:  return  4;
+	case IB_RATE_20_GBPS:  return  8;
+	case IB_RATE_30_GBPS:  return 12;
+	case IB_RATE_40_GBPS:  return 16;
+	case IB_RATE_60_GBPS:  return 24;
+	case IB_RATE_80_GBPS:  return 32;
+	case IB_RATE_120_GBPS: return 48;
+	default:	       return -1;
+	}
+}
+EXPORT_SYMBOL(ib_rate_to_mult);
+
+__attribute_const__ enum ib_rate mult_to_ib_rate(int mult)
+{
+	switch (mult) {
+	case 1:  return IB_RATE_2_5_GBPS;
+	case 2:  return IB_RATE_5_GBPS;
+	case 4:  return IB_RATE_10_GBPS;
+	case 8:  return IB_RATE_20_GBPS;
+	case 12: return IB_RATE_30_GBPS;
+	case 16: return IB_RATE_40_GBPS;
+	case 24: return IB_RATE_60_GBPS;
+	case 32: return IB_RATE_80_GBPS;
+	case 48: return IB_RATE_120_GBPS;
+	default: return IB_RATE_PORT_CURRENT;
+	}
+}
+EXPORT_SYMBOL(mult_to_ib_rate);
+
+__attribute_const__ int ib_rate_to_mbps(enum ib_rate rate)
+{
+	switch (rate) {
+	case IB_RATE_2_5_GBPS: return 2500;
+	case IB_RATE_5_GBPS:   return 5000;
+	case IB_RATE_10_GBPS:  return 10000;
+	case IB_RATE_20_GBPS:  return 20000;
+	case IB_RATE_30_GBPS:  return 30000;
+	case IB_RATE_40_GBPS:  return 40000;
+	case IB_RATE_60_GBPS:  return 60000;
+	case IB_RATE_80_GBPS:  return 80000;
+	case IB_RATE_120_GBPS: return 120000;
+	case IB_RATE_14_GBPS:  return 14062;
+	case IB_RATE_56_GBPS:  return 56250;
+	case IB_RATE_112_GBPS: return 112500;
+	case IB_RATE_168_GBPS: return 168750;
+	case IB_RATE_25_GBPS:  return 25781;
+	case IB_RATE_100_GBPS: return 103125;
+	case IB_RATE_200_GBPS: return 206250;
+	case IB_RATE_300_GBPS: return 309375;
+	default:	       return -1;
+	}
+}
+EXPORT_SYMBOL(ib_rate_to_mbps);
+
+__attribute_const__ enum rdma_transport_type
+rdma_node_get_transport(enum rdma_node_type node_type)
+{
+	switch (node_type) {
+	case RDMA_NODE_IB_CA:
+	case RDMA_NODE_IB_SWITCH:
+	case RDMA_NODE_IB_ROUTER:
+		return RDMA_TRANSPORT_IB;
+	case RDMA_NODE_RNIC:
+		return RDMA_TRANSPORT_IWARP;
+	case RDMA_NODE_USNIC:
+		return RDMA_TRANSPORT_USNIC;
+	case RDMA_NODE_USNIC_UDP:
+		return RDMA_TRANSPORT_USNIC_UDP;
+	default:
+		BUG();
+		return 0;
+	}
+}
+EXPORT_SYMBOL(rdma_node_get_transport);
+
+enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num)
+{
+	if (device->get_link_layer)
+		return device->get_link_layer(device, port_num);
+
+	switch (rdma_node_get_transport(device->node_type)) {
+	case RDMA_TRANSPORT_IB:
+		return IB_LINK_LAYER_INFINIBAND;
+	case RDMA_TRANSPORT_IWARP:
+	case RDMA_TRANSPORT_USNIC:
+	case RDMA_TRANSPORT_USNIC_UDP:
+		return IB_LINK_LAYER_ETHERNET;
+	default:
+		return IB_LINK_LAYER_UNSPECIFIED;
+	}
+}
+EXPORT_SYMBOL(rdma_port_get_link_layer);
+
+/* Protection domains */
+
+struct ib_pd *ib_alloc_pd(struct ib_device *device)
+{
+	struct ib_pd *pd;
+
+	pd = device->alloc_pd(device, NULL, NULL);
+
+	if (!IS_ERR(pd)) {
+		pd->device  = device;
+		pd->uobject = NULL;
+		atomic_set(&pd->usecnt, 0);
+	}
+
+	return pd;
+}
+EXPORT_SYMBOL(ib_alloc_pd);
+
+int ib_dealloc_pd(struct ib_pd *pd)
+{
+	if (atomic_read(&pd->usecnt))
+		return -EBUSY;
+
+	return pd->device->dealloc_pd(pd);
+}
+EXPORT_SYMBOL(ib_dealloc_pd);
+
+/* Address handles */
+
+struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+	struct ib_ah *ah;
+
+	ah = pd->device->create_ah(pd, ah_attr);
+
+	if (!IS_ERR(ah)) {
+		ah->device  = pd->device;
+		ah->pd      = pd;
+		ah->uobject = NULL;
+		atomic_inc(&pd->usecnt);
+	}
+
+	return ah;
+}
+EXPORT_SYMBOL(ib_create_ah);
+
+int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
+		       struct ib_grh *grh, struct ib_ah_attr *ah_attr)
+{
+	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 (!(wc->wc_flags & IB_WC_GRH))
+			return -EPROTOTYPE;
+
+		if (wc->wc_flags & IB_WC_WITH_SMAC &&
+		    wc->wc_flags & IB_WC_WITH_VLAN) {
+			memcpy(ah_attr->dmac, wc->smac, ETH_ALEN);
+			ah_attr->vlan_id = wc->vlan_id;
+		} else {
+			ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid,
+					ah_attr->dmac, &ah_attr->vlan_id);
+			if (ret)
+				return ret;
+		}
+	} else {
+		ah_attr->vlan_id = 0xffff;
+	}
+
+	ah_attr->dlid = wc->slid;
+	ah_attr->sl = wc->sl;
+	ah_attr->src_path_bits = wc->dlid_path_bits;
+	ah_attr->port_num = port_num;
+
+	if (wc->wc_flags & IB_WC_GRH) {
+		ah_attr->ah_flags = IB_AH_GRH;
+		ah_attr->grh.dgid = grh->sgid;
+
+		ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
+					 &gid_index);
+		if (ret)
+			return ret;
+
+		ah_attr->grh.sgid_index = (u8) gid_index;
+		flow_class = be32_to_cpu(grh->version_tclass_flow);
+		ah_attr->grh.flow_label = flow_class & 0xFFFFF;
+		ah_attr->grh.hop_limit = 0xFF;
+		ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(ib_init_ah_from_wc);
+
+struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
+				   struct ib_grh *grh, u8 port_num)
+{
+	struct ib_ah_attr ah_attr;
+	int ret;
+
+	ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return ib_create_ah(pd, &ah_attr);
+}
+EXPORT_SYMBOL(ib_create_ah_from_wc);
+
+int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+	return ah->device->modify_ah ?
+		ah->device->modify_ah(ah, ah_attr) :
+		-ENOSYS;
+}
+EXPORT_SYMBOL(ib_modify_ah);
+
+int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+	return ah->device->query_ah ?
+		ah->device->query_ah(ah, ah_attr) :
+		-ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_ah);
+
+int ib_destroy_ah(struct ib_ah *ah)
+{
+	struct ib_pd *pd;
+	int ret;
+
+	pd = ah->pd;
+	ret = ah->device->destroy_ah(ah);
+	if (!ret)
+		atomic_dec(&pd->usecnt);
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_destroy_ah);
+
+/* Shared receive queues */
+
+struct ib_srq *ib_create_srq(struct ib_pd *pd,
+			     struct ib_srq_init_attr *srq_init_attr)
+{
+	struct ib_srq *srq;
+
+	if (!pd->device->create_srq)
+		return ERR_PTR(-ENOSYS);
+
+	srq = pd->device->create_srq(pd, srq_init_attr, NULL);
+
+	if (!IS_ERR(srq)) {
+		srq->device    	   = pd->device;
+		srq->pd        	   = pd;
+		srq->uobject       = NULL;
+		srq->event_handler = srq_init_attr->event_handler;
+		srq->srq_context   = srq_init_attr->srq_context;
+		srq->srq_type      = srq_init_attr->srq_type;
+		if (srq->srq_type == IB_SRQT_XRC) {
+			srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
+			srq->ext.xrc.cq   = srq_init_attr->ext.xrc.cq;
+			atomic_inc(&srq->ext.xrc.xrcd->usecnt);
+			atomic_inc(&srq->ext.xrc.cq->usecnt);
+		}
+		atomic_inc(&pd->usecnt);
+		atomic_set(&srq->usecnt, 0);
+	}
+
+	return srq;
+}
+EXPORT_SYMBOL(ib_create_srq);
+
+int ib_modify_srq(struct ib_srq *srq,
+		  struct ib_srq_attr *srq_attr,
+		  enum ib_srq_attr_mask srq_attr_mask)
+{
+	return srq->device->modify_srq ?
+		srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
+		-ENOSYS;
+}
+EXPORT_SYMBOL(ib_modify_srq);
+
+int ib_query_srq(struct ib_srq *srq,
+		 struct ib_srq_attr *srq_attr)
+{
+	return srq->device->query_srq ?
+		srq->device->query_srq(srq, srq_attr) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_srq);
+
+int ib_destroy_srq(struct ib_srq *srq)
+{
+	struct ib_pd *pd;
+	enum ib_srq_type srq_type;
+	struct ib_xrcd *uninitialized_var(xrcd);
+	struct ib_cq *uninitialized_var(cq);
+	int ret;
+
+	if (atomic_read(&srq->usecnt))
+		return -EBUSY;
+
+	pd = srq->pd;
+	srq_type = srq->srq_type;
+	if (srq_type == IB_SRQT_XRC) {
+		xrcd = srq->ext.xrc.xrcd;
+		cq = srq->ext.xrc.cq;
+	}
+
+	ret = srq->device->destroy_srq(srq);
+	if (!ret) {
+		atomic_dec(&pd->usecnt);
+		if (srq_type == IB_SRQT_XRC) {
+			atomic_dec(&xrcd->usecnt);
+			atomic_dec(&cq->usecnt);
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_destroy_srq);
+
+/* Queue pairs */
+
+static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
+{
+	struct ib_qp *qp = context;
+	unsigned long flags;
+
+	spin_lock_irqsave(&qp->device->event_handler_lock, flags);
+	list_for_each_entry(event->element.qp, &qp->open_list, open_list)
+		if (event->element.qp->event_handler)
+			event->element.qp->event_handler(event, event->element.qp->qp_context);
+	spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
+}
+
+static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
+{
+	mutex_lock(&xrcd->tgt_qp_mutex);
+	list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
+	mutex_unlock(&xrcd->tgt_qp_mutex);
+}
+
+static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
+				  void (*event_handler)(struct ib_event *, void *),
+				  void *qp_context)
+{
+	struct ib_qp *qp;
+	unsigned long flags;
+
+	qp = kzalloc(sizeof *qp, GFP_KERNEL);
+	if (!qp)
+		return ERR_PTR(-ENOMEM);
+
+	qp->real_qp = real_qp;
+	atomic_inc(&real_qp->usecnt);
+	qp->device = real_qp->device;
+	qp->event_handler = event_handler;
+	qp->qp_context = qp_context;
+	qp->qp_num = real_qp->qp_num;
+	qp->qp_type = real_qp->qp_type;
+
+	spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
+	list_add(&qp->open_list, &real_qp->open_list);
+	spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
+
+	return qp;
+}
+
+struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
+			 struct ib_qp_open_attr *qp_open_attr)
+{
+	struct ib_qp *qp, *real_qp;
+
+	if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
+		return ERR_PTR(-EINVAL);
+
+	qp = ERR_PTR(-EINVAL);
+	mutex_lock(&xrcd->tgt_qp_mutex);
+	list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
+		if (real_qp->qp_num == qp_open_attr->qp_num) {
+			qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
+					  qp_open_attr->qp_context);
+			break;
+		}
+	}
+	mutex_unlock(&xrcd->tgt_qp_mutex);
+	return qp;
+}
+EXPORT_SYMBOL(ib_open_qp);
+
+struct ib_qp *ib_create_qp(struct ib_pd *pd,
+			   struct ib_qp_init_attr *qp_init_attr)
+{
+	struct ib_qp *qp, *real_qp;
+	struct ib_device *device;
+
+	device = pd ? pd->device : qp_init_attr->xrcd->device;
+	qp = device->create_qp(pd, qp_init_attr, NULL);
+
+	if (!IS_ERR(qp)) {
+		qp->device     = device;
+		qp->real_qp    = qp;
+		qp->uobject    = NULL;
+		qp->qp_type    = qp_init_attr->qp_type;
+
+		atomic_set(&qp->usecnt, 0);
+		if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
+			qp->event_handler = __ib_shared_qp_event_handler;
+			qp->qp_context = qp;
+			qp->pd = NULL;
+			qp->send_cq = qp->recv_cq = NULL;
+			qp->srq = NULL;
+			qp->xrcd = qp_init_attr->xrcd;
+			atomic_inc(&qp_init_attr->xrcd->usecnt);
+			INIT_LIST_HEAD(&qp->open_list);
+
+			real_qp = qp;
+			qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
+					  qp_init_attr->qp_context);
+			if (!IS_ERR(qp))
+				__ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
+			else
+				real_qp->device->destroy_qp(real_qp);
+		} else {
+			qp->event_handler = qp_init_attr->event_handler;
+			qp->qp_context = qp_init_attr->qp_context;
+			if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
+				qp->recv_cq = NULL;
+				qp->srq = NULL;
+			} else {
+				qp->recv_cq = qp_init_attr->recv_cq;
+				atomic_inc(&qp_init_attr->recv_cq->usecnt);
+				qp->srq = qp_init_attr->srq;
+				if (qp->srq)
+					atomic_inc(&qp_init_attr->srq->usecnt);
+			}
+
+			qp->pd	    = pd;
+			qp->send_cq = qp_init_attr->send_cq;
+			qp->xrcd    = NULL;
+
+			atomic_inc(&pd->usecnt);
+			atomic_inc(&qp_init_attr->send_cq->usecnt);
+		}
+	}
+
+	return qp;
+}
+EXPORT_SYMBOL(ib_create_qp);
+
+static const struct {
+	int			valid;
+	enum ib_qp_attr_mask	req_param[IB_QPT_MAX];
+	enum ib_qp_attr_mask	req_param_add_eth[IB_QPT_MAX];
+	enum ib_qp_attr_mask	opt_param[IB_QPT_MAX];
+	enum ib_qp_attr_mask	opt_param_add_eth[IB_QPT_MAX];
+} qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
+	[IB_QPS_RESET] = {
+		[IB_QPS_RESET] = { .valid = 1 },
+		[IB_QPS_INIT]  = {
+			.valid = 1,
+			.req_param = {
+				[IB_QPT_UD]  = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_QKEY),
+				[IB_QPT_RAW_PACKET] = IB_QP_PORT,
+				[IB_QPT_UC]  = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_RC]  = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_SMI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_QKEY),
+				[IB_QPT_GSI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_QKEY),
+			}
+		},
+	},
+	[IB_QPS_INIT]  = {
+		[IB_QPS_RESET] = { .valid = 1 },
+		[IB_QPS_ERR] =   { .valid = 1 },
+		[IB_QPS_INIT]  = {
+			.valid = 1,
+			.opt_param = {
+				[IB_QPT_UD]  = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_QKEY),
+				[IB_QPT_UC]  = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_RC]  = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX		|
+						IB_QP_PORT			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_SMI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_QKEY),
+				[IB_QPT_GSI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_QKEY),
+			}
+		},
+		[IB_QPS_RTR]   = {
+			.valid = 1,
+			.req_param = {
+				[IB_QPT_UC]  = (IB_QP_AV			|
+						IB_QP_PATH_MTU			|
+						IB_QP_DEST_QPN			|
+						IB_QP_RQ_PSN),
+				[IB_QPT_RC]  = (IB_QP_AV			|
+						IB_QP_PATH_MTU			|
+						IB_QP_DEST_QPN			|
+						IB_QP_RQ_PSN			|
+						IB_QP_MAX_DEST_RD_ATOMIC	|
+						IB_QP_MIN_RNR_TIMER),
+				[IB_QPT_XRC_INI] = (IB_QP_AV			|
+						IB_QP_PATH_MTU			|
+						IB_QP_DEST_QPN			|
+						IB_QP_RQ_PSN),
+				[IB_QPT_XRC_TGT] = (IB_QP_AV			|
+						IB_QP_PATH_MTU			|
+						IB_QP_DEST_QPN			|
+						IB_QP_RQ_PSN			|
+						IB_QP_MAX_DEST_RD_ATOMIC	|
+						IB_QP_MIN_RNR_TIMER),
+			},
+			.req_param_add_eth = {
+				[IB_QPT_RC]  = (IB_QP_SMAC),
+				[IB_QPT_UC]  = (IB_QP_SMAC),
+				[IB_QPT_XRC_INI]  = (IB_QP_SMAC),
+				[IB_QPT_XRC_TGT]  = (IB_QP_SMAC)
+			},
+			.opt_param = {
+				 [IB_QPT_UD]  = (IB_QP_PKEY_INDEX		|
+						 IB_QP_QKEY),
+				 [IB_QPT_UC]  = (IB_QP_ALT_PATH			|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_PKEY_INDEX),
+				 [IB_QPT_RC]  = (IB_QP_ALT_PATH			|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_PKEY_INDEX),
+				 [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH		|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_PKEY_INDEX),
+				 [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH		|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_PKEY_INDEX),
+				 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX		|
+						 IB_QP_QKEY),
+				 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX		|
+						 IB_QP_QKEY),
+			 },
+			.opt_param_add_eth = {
+				[IB_QPT_RC]  = (IB_QP_ALT_SMAC			|
+						IB_QP_VID			|
+						IB_QP_ALT_VID),
+				[IB_QPT_UC]  = (IB_QP_ALT_SMAC			|
+						IB_QP_VID			|
+						IB_QP_ALT_VID),
+				[IB_QPT_XRC_INI]  = (IB_QP_ALT_SMAC			|
+						IB_QP_VID			|
+						IB_QP_ALT_VID),
+				[IB_QPT_XRC_TGT]  = (IB_QP_ALT_SMAC			|
+						IB_QP_VID			|
+						IB_QP_ALT_VID)
+			}
+		}
+	},
+	[IB_QPS_RTR]   = {
+		[IB_QPS_RESET] = { .valid = 1 },
+		[IB_QPS_ERR] =   { .valid = 1 },
+		[IB_QPS_RTS]   = {
+			.valid = 1,
+			.req_param = {
+				[IB_QPT_UD]  = IB_QP_SQ_PSN,
+				[IB_QPT_UC]  = IB_QP_SQ_PSN,
+				[IB_QPT_RC]  = (IB_QP_TIMEOUT			|
+						IB_QP_RETRY_CNT			|
+						IB_QP_RNR_RETRY			|
+						IB_QP_SQ_PSN			|
+						IB_QP_MAX_QP_RD_ATOMIC),
+				[IB_QPT_XRC_INI] = (IB_QP_TIMEOUT		|
+						IB_QP_RETRY_CNT			|
+						IB_QP_RNR_RETRY			|
+						IB_QP_SQ_PSN			|
+						IB_QP_MAX_QP_RD_ATOMIC),
+				[IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT		|
+						IB_QP_SQ_PSN),
+				[IB_QPT_SMI] = IB_QP_SQ_PSN,
+				[IB_QPT_GSI] = IB_QP_SQ_PSN,
+			},
+			.opt_param = {
+				 [IB_QPT_UD]  = (IB_QP_CUR_STATE		|
+						 IB_QP_QKEY),
+				 [IB_QPT_UC]  = (IB_QP_CUR_STATE		|
+						 IB_QP_ALT_PATH			|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_PATH_MIG_STATE),
+				 [IB_QPT_RC]  = (IB_QP_CUR_STATE		|
+						 IB_QP_ALT_PATH			|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_MIN_RNR_TIMER		|
+						 IB_QP_PATH_MIG_STATE),
+				 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE		|
+						 IB_QP_ALT_PATH			|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_PATH_MIG_STATE),
+				 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE		|
+						 IB_QP_ALT_PATH			|
+						 IB_QP_ACCESS_FLAGS		|
+						 IB_QP_MIN_RNR_TIMER		|
+						 IB_QP_PATH_MIG_STATE),
+				 [IB_QPT_SMI] = (IB_QP_CUR_STATE		|
+						 IB_QP_QKEY),
+				 [IB_QPT_GSI] = (IB_QP_CUR_STATE		|
+						 IB_QP_QKEY),
+			 }
+		}
+	},
+	[IB_QPS_RTS]   = {
+		[IB_QPS_RESET] = { .valid = 1 },
+		[IB_QPS_ERR] =   { .valid = 1 },
+		[IB_QPS_RTS]   = {
+			.valid = 1,
+			.opt_param = {
+				[IB_QPT_UD]  = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+				[IB_QPT_UC]  = (IB_QP_CUR_STATE			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_ALT_PATH			|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_RC]  = (IB_QP_CUR_STATE			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_ALT_PATH			|
+						IB_QP_PATH_MIG_STATE		|
+						IB_QP_MIN_RNR_TIMER),
+				[IB_QPT_XRC_INI] = (IB_QP_CUR_STATE		|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_ALT_PATH			|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE		|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_ALT_PATH			|
+						IB_QP_PATH_MIG_STATE		|
+						IB_QP_MIN_RNR_TIMER),
+				[IB_QPT_SMI] = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+				[IB_QPT_GSI] = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+			}
+		},
+		[IB_QPS_SQD]   = {
+			.valid = 1,
+			.opt_param = {
+				[IB_QPT_UD]  = IB_QP_EN_SQD_ASYNC_NOTIFY,
+				[IB_QPT_UC]  = IB_QP_EN_SQD_ASYNC_NOTIFY,
+				[IB_QPT_RC]  = IB_QP_EN_SQD_ASYNC_NOTIFY,
+				[IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
+				[IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */
+				[IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
+				[IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
+			}
+		},
+	},
+	[IB_QPS_SQD]   = {
+		[IB_QPS_RESET] = { .valid = 1 },
+		[IB_QPS_ERR] =   { .valid = 1 },
+		[IB_QPS_RTS]   = {
+			.valid = 1,
+			.opt_param = {
+				[IB_QPT_UD]  = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+				[IB_QPT_UC]  = (IB_QP_CUR_STATE			|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_RC]  = (IB_QP_CUR_STATE			|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_MIN_RNR_TIMER		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_XRC_INI] = (IB_QP_CUR_STATE		|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE		|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_MIN_RNR_TIMER		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_SMI] = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+				[IB_QPT_GSI] = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+			}
+		},
+		[IB_QPS_SQD]   = {
+			.valid = 1,
+			.opt_param = {
+				[IB_QPT_UD]  = (IB_QP_PKEY_INDEX		|
+						IB_QP_QKEY),
+				[IB_QPT_UC]  = (IB_QP_AV			|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_PKEY_INDEX		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_RC]  = (IB_QP_PORT			|
+						IB_QP_AV			|
+						IB_QP_TIMEOUT			|
+						IB_QP_RETRY_CNT			|
+						IB_QP_RNR_RETRY			|
+						IB_QP_MAX_QP_RD_ATOMIC		|
+						IB_QP_MAX_DEST_RD_ATOMIC	|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_PKEY_INDEX		|
+						IB_QP_MIN_RNR_TIMER		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_XRC_INI] = (IB_QP_PORT			|
+						IB_QP_AV			|
+						IB_QP_TIMEOUT			|
+						IB_QP_RETRY_CNT			|
+						IB_QP_RNR_RETRY			|
+						IB_QP_MAX_QP_RD_ATOMIC		|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_PKEY_INDEX		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_XRC_TGT] = (IB_QP_PORT			|
+						IB_QP_AV			|
+						IB_QP_TIMEOUT			|
+						IB_QP_MAX_DEST_RD_ATOMIC	|
+						IB_QP_ALT_PATH			|
+						IB_QP_ACCESS_FLAGS		|
+						IB_QP_PKEY_INDEX		|
+						IB_QP_MIN_RNR_TIMER		|
+						IB_QP_PATH_MIG_STATE),
+				[IB_QPT_SMI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_QKEY),
+				[IB_QPT_GSI] = (IB_QP_PKEY_INDEX		|
+						IB_QP_QKEY),
+			}
+		}
+	},
+	[IB_QPS_SQE]   = {
+		[IB_QPS_RESET] = { .valid = 1 },
+		[IB_QPS_ERR] =   { .valid = 1 },
+		[IB_QPS_RTS]   = {
+			.valid = 1,
+			.opt_param = {
+				[IB_QPT_UD]  = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+				[IB_QPT_UC]  = (IB_QP_CUR_STATE			|
+						IB_QP_ACCESS_FLAGS),
+				[IB_QPT_SMI] = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+				[IB_QPT_GSI] = (IB_QP_CUR_STATE			|
+						IB_QP_QKEY),
+			}
+		}
+	},
+	[IB_QPS_ERR] = {
+		[IB_QPS_RESET] = { .valid = 1 },
+		[IB_QPS_ERR] =   { .valid = 1 }
+	}
+};
+
+int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
+		       enum ib_qp_type type, enum ib_qp_attr_mask mask,
+		       enum rdma_link_layer ll)
+{
+	enum ib_qp_attr_mask req_param, opt_param;
+
+	if (cur_state  < 0 || cur_state  > IB_QPS_ERR ||
+	    next_state < 0 || next_state > IB_QPS_ERR)
+		return 0;
+
+	if (mask & IB_QP_CUR_STATE  &&
+	    cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
+	    cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
+		return 0;
+
+	if (!qp_state_table[cur_state][next_state].valid)
+		return 0;
+
+	req_param = qp_state_table[cur_state][next_state].req_param[type];
+	opt_param = qp_state_table[cur_state][next_state].opt_param[type];
+
+	if (ll == IB_LINK_LAYER_ETHERNET) {
+		req_param |= qp_state_table[cur_state][next_state].
+			req_param_add_eth[type];
+		opt_param |= qp_state_table[cur_state][next_state].
+			opt_param_add_eth[type];
+	}
+
+	if ((mask & req_param) != req_param)
+		return 0;
+
+	if (mask & ~(req_param | opt_param | IB_QP_STATE))
+		return 0;
+
+	return 1;
+}
+EXPORT_SYMBOL(ib_modify_qp_is_ok);
+
+int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
+			    struct ib_qp_attr *qp_attr, int *qp_attr_mask)
+{
+	int           ret = 0;
+	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)) {
+		ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
+				   qp_attr->ah_attr.grh.sgid_index, &sgid);
+		if (ret)
+			goto out;
+		if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) {
+			rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac);
+			rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac);
+			if (!(*qp_attr_mask & IB_QP_VID))
+				qp_attr->vlan_id = rdma_get_vlan_id(&sgid);
+		} else {
+			ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid,
+					qp_attr->ah_attr.dmac, &qp_attr->vlan_id);
+			if (ret)
+				goto out;
+			ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL);
+			if (ret)
+				goto out;
+		}
+		*qp_attr_mask |= IB_QP_SMAC;
+		if (qp_attr->vlan_id < 0xFFFF)
+			*qp_attr_mask |= IB_QP_VID;
+	}
+out:
+	return ret;
+}
+EXPORT_SYMBOL(ib_resolve_eth_l2_attrs);
+
+
+int ib_modify_qp(struct ib_qp *qp,
+		 struct ib_qp_attr *qp_attr,
+		 int qp_attr_mask)
+{
+	int ret;
+
+	ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask);
+	if (ret)
+		return ret;
+
+	return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
+}
+EXPORT_SYMBOL(ib_modify_qp);
+
+int 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)
+{
+	return qp->device->query_qp ?
+		qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
+		-ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_qp);
+
+int ib_close_qp(struct ib_qp *qp)
+{
+	struct ib_qp *real_qp;
+	unsigned long flags;
+
+	real_qp = qp->real_qp;
+	if (real_qp == qp)
+		return -EINVAL;
+
+	spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
+	list_del(&qp->open_list);
+	spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
+
+	atomic_dec(&real_qp->usecnt);
+	kfree(qp);
+
+	return 0;
+}
+EXPORT_SYMBOL(ib_close_qp);
+
+static int __ib_destroy_shared_qp(struct ib_qp *qp)
+{
+	struct ib_xrcd *xrcd;
+	struct ib_qp *real_qp;
+	int ret;
+
+	real_qp = qp->real_qp;
+	xrcd = real_qp->xrcd;
+
+	mutex_lock(&xrcd->tgt_qp_mutex);
+	ib_close_qp(qp);
+	if (atomic_read(&real_qp->usecnt) == 0)
+		list_del(&real_qp->xrcd_list);
+	else
+		real_qp = NULL;
+	mutex_unlock(&xrcd->tgt_qp_mutex);
+
+	if (real_qp) {
+		ret = ib_destroy_qp(real_qp);
+		if (!ret)
+			atomic_dec(&xrcd->usecnt);
+		else
+			__ib_insert_xrcd_qp(xrcd, real_qp);
+	}
+
+	return 0;
+}
+
+int ib_destroy_qp(struct ib_qp *qp)
+{
+	struct ib_pd *pd;
+	struct ib_cq *scq, *rcq;
+	struct ib_srq *srq;
+	int ret;
+
+	if (atomic_read(&qp->usecnt))
+		return -EBUSY;
+
+	if (qp->real_qp != qp)
+		return __ib_destroy_shared_qp(qp);
+
+	pd   = qp->pd;
+	scq  = qp->send_cq;
+	rcq  = qp->recv_cq;
+	srq  = qp->srq;
+
+	ret = qp->device->destroy_qp(qp);
+	if (!ret) {
+		if (pd)
+			atomic_dec(&pd->usecnt);
+		if (scq)
+			atomic_dec(&scq->usecnt);
+		if (rcq)
+			atomic_dec(&rcq->usecnt);
+		if (srq)
+			atomic_dec(&srq->usecnt);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_destroy_qp);
+
+/* Completion queues */
+
+struct ib_cq *ib_create_cq(struct ib_device *device,
+			   ib_comp_handler comp_handler,
+			   void (*event_handler)(struct ib_event *, void *),
+			   void *cq_context, int cqe, int comp_vector)
+{
+	struct ib_cq *cq;
+
+	cq = device->create_cq(device, cqe, comp_vector, NULL, NULL);
+
+	if (!IS_ERR(cq)) {
+		cq->device        = device;
+		cq->uobject       = NULL;
+		cq->comp_handler  = comp_handler;
+		cq->event_handler = event_handler;
+		cq->cq_context    = cq_context;
+		atomic_set(&cq->usecnt, 0);
+	}
+
+	return cq;
+}
+EXPORT_SYMBOL(ib_create_cq);
+
+int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
+{
+	return cq->device->modify_cq ?
+		cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_modify_cq);
+
+int ib_destroy_cq(struct ib_cq *cq)
+{
+	if (atomic_read(&cq->usecnt))
+		return -EBUSY;
+
+	return cq->device->destroy_cq(cq);
+}
+EXPORT_SYMBOL(ib_destroy_cq);
+
+int ib_resize_cq(struct ib_cq *cq, int cqe)
+{
+	return cq->device->resize_cq ?
+		cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_resize_cq);
+
+/* Memory regions */
+
+struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
+{
+	struct ib_mr *mr;
+	int err;
+
+	err = ib_check_mr_access(mr_access_flags);
+	if (err)
+		return ERR_PTR(err);
+
+	mr = pd->device->get_dma_mr(pd, mr_access_flags);
+
+	if (!IS_ERR(mr)) {
+		mr->device  = pd->device;
+		mr->pd      = pd;
+		mr->uobject = NULL;
+		atomic_inc(&pd->usecnt);
+		atomic_set(&mr->usecnt, 0);
+	}
+
+	return mr;
+}
+EXPORT_SYMBOL(ib_get_dma_mr);
+
+struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
+			     struct ib_phys_buf *phys_buf_array,
+			     int num_phys_buf,
+			     int mr_access_flags,
+			     u64 *iova_start)
+{
+	struct ib_mr *mr;
+	int err;
+
+	err = ib_check_mr_access(mr_access_flags);
+	if (err)
+		return ERR_PTR(err);
+
+	if (!pd->device->reg_phys_mr)
+		return ERR_PTR(-ENOSYS);
+
+	mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
+				     mr_access_flags, iova_start);
+
+	if (!IS_ERR(mr)) {
+		mr->device  = pd->device;
+		mr->pd      = pd;
+		mr->uobject = NULL;
+		atomic_inc(&pd->usecnt);
+		atomic_set(&mr->usecnt, 0);
+	}
+
+	return mr;
+}
+EXPORT_SYMBOL(ib_reg_phys_mr);
+
+int ib_rereg_phys_mr(struct ib_mr *mr,
+		     int mr_rereg_mask,
+		     struct ib_pd *pd,
+		     struct ib_phys_buf *phys_buf_array,
+		     int num_phys_buf,
+		     int mr_access_flags,
+		     u64 *iova_start)
+{
+	struct ib_pd *old_pd;
+	int ret;
+
+	ret = ib_check_mr_access(mr_access_flags);
+	if (ret)
+		return ret;
+
+	if (!mr->device->rereg_phys_mr)
+		return -ENOSYS;
+
+	if (atomic_read(&mr->usecnt))
+		return -EBUSY;
+
+	old_pd = mr->pd;
+
+	ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
+					phys_buf_array, num_phys_buf,
+					mr_access_flags, iova_start);
+
+	if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
+		atomic_dec(&old_pd->usecnt);
+		atomic_inc(&pd->usecnt);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_rereg_phys_mr);
+
+int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
+{
+	return mr->device->query_mr ?
+		mr->device->query_mr(mr, mr_attr) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_mr);
+
+int ib_dereg_mr(struct ib_mr *mr)
+{
+	struct ib_pd *pd;
+	int ret;
+
+	if (atomic_read(&mr->usecnt))
+		return -EBUSY;
+
+	pd = mr->pd;
+	ret = mr->device->dereg_mr(mr);
+	if (!ret)
+		atomic_dec(&pd->usecnt);
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_dereg_mr);
+
+struct ib_mr *ib_create_mr(struct ib_pd *pd,
+			   struct ib_mr_init_attr *mr_init_attr)
+{
+	struct ib_mr *mr;
+
+	if (!pd->device->create_mr)
+		return ERR_PTR(-ENOSYS);
+
+	mr = pd->device->create_mr(pd, mr_init_attr);
+
+	if (!IS_ERR(mr)) {
+		mr->device  = pd->device;
+		mr->pd      = pd;
+		mr->uobject = NULL;
+		atomic_inc(&pd->usecnt);
+		atomic_set(&mr->usecnt, 0);
+	}
+
+	return mr;
+}
+EXPORT_SYMBOL(ib_create_mr);
+
+int ib_destroy_mr(struct ib_mr *mr)
+{
+	struct ib_pd *pd;
+	int ret;
+
+	if (atomic_read(&mr->usecnt))
+		return -EBUSY;
+
+	pd = mr->pd;
+	ret = mr->device->destroy_mr(mr);
+	if (!ret)
+		atomic_dec(&pd->usecnt);
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_destroy_mr);
+
+struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
+{
+	struct ib_mr *mr;
+
+	if (!pd->device->alloc_fast_reg_mr)
+		return ERR_PTR(-ENOSYS);
+
+	mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len);
+
+	if (!IS_ERR(mr)) {
+		mr->device  = pd->device;
+		mr->pd      = pd;
+		mr->uobject = NULL;
+		atomic_inc(&pd->usecnt);
+		atomic_set(&mr->usecnt, 0);
+	}
+
+	return mr;
+}
+EXPORT_SYMBOL(ib_alloc_fast_reg_mr);
+
+struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
+							  int max_page_list_len)
+{
+	struct ib_fast_reg_page_list *page_list;
+
+	if (!device->alloc_fast_reg_page_list)
+		return ERR_PTR(-ENOSYS);
+
+	page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
+
+	if (!IS_ERR(page_list)) {
+		page_list->device = device;
+		page_list->max_page_list_len = max_page_list_len;
+	}
+
+	return page_list;
+}
+EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
+
+void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
+{
+	page_list->device->free_fast_reg_page_list(page_list);
+}
+EXPORT_SYMBOL(ib_free_fast_reg_page_list);
+
+/* Memory windows */
+
+struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
+{
+	struct ib_mw *mw;
+
+	if (!pd->device->alloc_mw)
+		return ERR_PTR(-ENOSYS);
+
+	mw = pd->device->alloc_mw(pd, type);
+	if (!IS_ERR(mw)) {
+		mw->device  = pd->device;
+		mw->pd      = pd;
+		mw->uobject = NULL;
+		mw->type    = type;
+		atomic_inc(&pd->usecnt);
+	}
+
+	return mw;
+}
+EXPORT_SYMBOL(ib_alloc_mw);
+
+int ib_dealloc_mw(struct ib_mw *mw)
+{
+	struct ib_pd *pd;
+	int ret;
+
+	pd = mw->pd;
+	ret = mw->device->dealloc_mw(mw);
+	if (!ret)
+		atomic_dec(&pd->usecnt);
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_dealloc_mw);
+
+/* "Fast" memory regions */
+
+struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
+			    int mr_access_flags,
+			    struct ib_fmr_attr *fmr_attr)
+{
+	struct ib_fmr *fmr;
+
+	if (!pd->device->alloc_fmr)
+		return ERR_PTR(-ENOSYS);
+
+	fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
+	if (!IS_ERR(fmr)) {
+		fmr->device = pd->device;
+		fmr->pd     = pd;
+		atomic_inc(&pd->usecnt);
+	}
+
+	return fmr;
+}
+EXPORT_SYMBOL(ib_alloc_fmr);
+
+int ib_unmap_fmr(struct list_head *fmr_list)
+{
+	struct ib_fmr *fmr;
+
+	if (list_empty(fmr_list))
+		return 0;
+
+	fmr = list_entry(fmr_list->next, struct ib_fmr, list);
+	return fmr->device->unmap_fmr(fmr_list);
+}
+EXPORT_SYMBOL(ib_unmap_fmr);
+
+int ib_dealloc_fmr(struct ib_fmr *fmr)
+{
+	struct ib_pd *pd;
+	int ret;
+
+	pd = fmr->pd;
+	ret = fmr->device->dealloc_fmr(fmr);
+	if (!ret)
+		atomic_dec(&pd->usecnt);
+
+	return ret;
+}
+EXPORT_SYMBOL(ib_dealloc_fmr);
+
+/* Multicast groups */
+
+int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+	int ret;
+
+	if (!qp->device->attach_mcast)
+		return -ENOSYS;
+	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+		return -EINVAL;
+
+	ret = qp->device->attach_mcast(qp, gid, lid);
+	if (!ret)
+		atomic_inc(&qp->usecnt);
+	return ret;
+}
+EXPORT_SYMBOL(ib_attach_mcast);
+
+int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+	int ret;
+
+	if (!qp->device->detach_mcast)
+		return -ENOSYS;
+	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+		return -EINVAL;
+
+	ret = qp->device->detach_mcast(qp, gid, lid);
+	if (!ret)
+		atomic_dec(&qp->usecnt);
+	return ret;
+}
+EXPORT_SYMBOL(ib_detach_mcast);
+
+struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
+{
+	struct ib_xrcd *xrcd;
+
+	if (!device->alloc_xrcd)
+		return ERR_PTR(-ENOSYS);
+
+	xrcd = device->alloc_xrcd(device, NULL, NULL);
+	if (!IS_ERR(xrcd)) {
+		xrcd->device = device;
+		xrcd->inode = NULL;
+		atomic_set(&xrcd->usecnt, 0);
+		mutex_init(&xrcd->tgt_qp_mutex);
+		INIT_LIST_HEAD(&xrcd->tgt_qp_list);
+	}
+
+	return xrcd;
+}
+EXPORT_SYMBOL(ib_alloc_xrcd);
+
+int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
+{
+	struct ib_qp *qp;
+	int ret;
+
+	if (atomic_read(&xrcd->usecnt))
+		return -EBUSY;
+
+	while (!list_empty(&xrcd->tgt_qp_list)) {
+		qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
+		ret = ib_destroy_qp(qp);
+		if (ret)
+			return ret;
+	}
+
+	return xrcd->device->dealloc_xrcd(xrcd);
+}
+EXPORT_SYMBOL(ib_dealloc_xrcd);
+
+struct ib_flow *ib_create_flow(struct ib_qp *qp,
+			       struct ib_flow_attr *flow_attr,
+			       int domain)
+{
+	struct ib_flow *flow_id;
+	if (!qp->device->create_flow)
+		return ERR_PTR(-ENOSYS);
+
+	flow_id = qp->device->create_flow(qp, flow_attr, domain);
+	if (!IS_ERR(flow_id))
+		atomic_inc(&qp->usecnt);
+	return flow_id;
+}
+EXPORT_SYMBOL(ib_create_flow);
+
+int ib_destroy_flow(struct ib_flow *flow_id)
+{
+	int err;
+	struct ib_qp *qp = flow_id->qp;
+
+	err = qp->device->destroy_flow(flow_id);
+	if (!err)
+		atomic_dec(&qp->usecnt);
+	return err;
+}
+EXPORT_SYMBOL(ib_destroy_flow);
+
+int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
+		       struct ib_mr_status *mr_status)
+{
+	return mr->device->check_mr_status ?
+		mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_check_mr_status);