UBUNTU: SAUCE: RDMA Infiniband for Windows Azure

BugLink: http://bugs.launchpad.net/bugs/1641139Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

drivers/infiniband/hw/vmbus-rdma/COPYING

+
+"This software program is licensed subject to the GNU General Public License 
+(GPL). Version 2, June 1991, available at 
+<http://www.fsf.org/copyleft/gpl.html>"
+
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+License instead of this License.

drivers/infiniband/hw/vmbus-rdma/Kconfig

+config HYPERV_INFINIBAND_ND 
+	tristate "Microsoft Hyper-V Network Direct"
+	depends on PCI && INET && INFINIBAND && HYPERV
+	---help---
+	  This is a low-level driver for Vmbus based NetworkDirect. 

drivers/infiniband/hw/vmbus-rdma/Makefile

+obj-$(CONFIG_PCMCIA)	+= hv_network_direct.o
+
+hv_network_direct-y := provider.o vmbus_rdma.o hvnd_addr.o

drivers/infiniband/hw/vmbus-rdma/hvnd_addr.c

+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ *   K. Y. Srinivasan <kys@microsoft.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * Bug fixes/enhancements: Long Li <longli@microsoft.com>
+ */
+
+#include <linux/completion.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/hyperv.h>
+#include <linux/efi.h>
+#include <linux/slab.h>
+#include <linux/cred.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/completion.h>
+#include <linux/scatterlist.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_addr.h>
+
+#include "vmbus_rdma.h"
+
+
+#include <linux/semaphore.h>
+#include <linux/fs.h>
+#include <linux/nls.h>
+#include <linux/workqueue.h>
+#include <linux/cdev.h>
+#include <linux/hyperv.h>
+#include <linux/sched.h>
+#include <linux/uaccess.h>
+#include <linux/miscdevice.h>
+#include <linux/hyperv.h>
+
+
+int hvnd_get_outgoing_rdma_addr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+				union nd_sockaddr_inet *og_addr)
+{
+	int ret;
+	/*
+	 * Query the host and select the first address.
+	 */
+	struct pkt_query_addr_list pkt;
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+
+	hvnd_init_hdr(&pkt.hdr,
+		      (sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1)),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST, 0, 0, 0);
+
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = uctx->adaptor_hdl;
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr,
+				  sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		return ret;
+
+	/*
+	 * Copy the address out.
+	 */
+
+	memcpy(og_addr, &pkt.ioctl.out[0], sizeof(*og_addr));
+	return 0;
+
+}
+
+static struct rdma_addr_client self;
+
+struct resolve_cb_context {
+	struct rdma_dev_addr *addr;
+	struct completion comp;
+};
+
+void hvnd_addr_init(void)
+{
+	rdma_addr_register_client(&self);
+	return;
+}
+
+void hvnd_addr_deinit(void)
+{
+	rdma_addr_unregister_client(&self);
+	return;
+}
+
+static void resolve_cb(int status, struct sockaddr *src_addr,
+	     struct rdma_dev_addr *addr, void *context)
+{
+	memcpy(((struct resolve_cb_context *)context)->addr, addr, sizeof(struct
+				rdma_dev_addr));
+	complete(&((struct resolve_cb_context *)context)->comp);
+}
+
+int hvnd_get_neigh_mac_addr(struct sockaddr *local, struct sockaddr *remote, char *mac_addr)
+{
+	struct rdma_dev_addr dev_addr;
+	struct resolve_cb_context ctx;
+	int ret;
+
+	memset(&dev_addr, 0, sizeof(dev_addr));
+	dev_addr.net = &init_net;
+	ctx.addr = &dev_addr;
+	init_completion(&ctx.comp);
+
+	ret = rdma_resolve_ip(&self, local, remote, &dev_addr, 1000, resolve_cb, &ctx);
+
+	if (ret) {
+		hvnd_error("rdma_resolve_ip failed ret=%d\n", ret);
+		return ret;
+	}
+
+	wait_for_completion(&ctx.comp);
+	memcpy(mac_addr, dev_addr.dst_dev_addr, ETH_ALEN);
+	return ret;
+}

drivers/infiniband/hw/vmbus-rdma/mx_abi.h

+/*
+ * Copyright (c) 2005 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005 PathScale, Inc.  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.
+ *
+ * KYS: made some modifications.
+ */
+
+#ifndef MX_ABI_H
+#define MX_ABI_H
+
+
+
+/*
+ * Make sure that all structs defined in this file remain laid out so
+ * that they pack the same way on 32-bit and 64-bit architectures (to
+ * avoid incompatibility between 32-bit userspace and 64-bit kernels).
+ * Specifically:
+ *  - Do not use pointer types -- pass pointers in UINT64 instead.
+ *  - Make sure that any structure larger than 4 bytes is padded to a
+ *    multiple of 8 bytes.  Otherwise the structure size will be
+ *    different between 32-bit and 64-bit architectures.
+ */
+
+enum ibv_get_context_mappings {
+	IBV_GET_CONTEXT_UAR,
+	IBV_GET_CONTEXT_BF,
+	IBV_GET_CONTEXT_MAPPING_MAX
+};
+
+struct ibv_get_context_req {
+
+	union nd_mapping mappings[IBV_GET_CONTEXT_MAPPING_MAX];
+};
+
+struct ibv_get_context_resp {
+
+	// mmap UAR and BF
+	struct nd_mapping_result  mapping_results[IBV_GET_CONTEXT_MAPPING_MAX];
+	
+	// mmap Blue Flame
+	int bf_buf_size;
+	int bf_offset;
+	
+	// mlx4_query_device result 
+	int max_qp_wr;
+	int max_sge;
+	int max_cqe;
+
+	// general parameters
+	u32 cqe_size;
+	u32 vend_id;
+	u16 dev_id;
+	u16 bf_reg_size;
+	u16 bf_regs_per_page;
+	u16 reserved1;
+
+	// ibv_cmd_get_context result 
+	u32 qp_tab_size;
+
+	u32 reserved2;
+};
+
+struct ibv_alloc_pd_resp {
+	u64 pd_handle;
+	u32 pdn;
+	u32 reserved;
+};
+
+struct ibv_reg_mr {
+	u64 start;
+	u64 length;
+	u64 hca_va;
+	u32 access_flags;
+	u32 pdn;
+	u64 pd_handle;
+};
+
+struct ibv_reg_mr_resp {
+	u64 mr_handle;
+	u32 lkey;
+	u32 rkey;
+};
+
+
+enum mlx4_ib_create_cq_mapping {
+	MLX4_IB_CREATE_CQ_BUF,
+	MLX4_IB_CREATE_CQ_DB,
+	MLX4_IB_CREATE_CQ_ARM_SN,   // Windows specific
+	MLX4_IB_CREATE_CQ_MAPPING_MAX
+};
+
+#define MLX4_CQ_FLAGS_ARM_IN_KERNEL     1
+
+struct ibv_create_cq {
+	union nd_mapping mappings[MLX4_IB_CREATE_CQ_MAPPING_MAX];
+	u32  flags;
+};
+
+struct ibv_create_cq_resp {
+	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_CQ_MAPPING_MAX];
+	u32  cqn;
+	u32  cqe;
+};
+
+enum mlx4_ib_create_srq_mappings {
+	MLX4_IB_CREATE_SRQ_BUF,
+	MLX4_IB_CREATE_SRQ_DB,
+	MLX4_IB_CREATE_SRQ_MAPPINGS_MAX
+};
+
+struct ibv_create_srq {
+	union nd_mapping mappings[MLX4_IB_CREATE_SRQ_MAPPINGS_MAX];
+};
+
+struct ibv_create_srq_resp {
+	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_SRQ_MAPPINGS_MAX];
+};
+
+enum mlx4_ib_create_qp_mappings {
+	MLX4_IB_CREATE_QP_BUF,
+	MLX4_IB_CREATE_QP_DB,
+	MLX4_IB_CREATE_QP_MAPPINGS_MAX
+};
+
+struct ibv_create_qp {
+	union nd_mapping mappings[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
+	u8	log_sq_bb_count;
+	u8	log_sq_stride;
+	u8	sq_no_prefetch;
+	u8	reserved;
+};
+
+struct ibv_create_qp_resp {
+	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
+	// struct ib_uverbs_create_qp_resp
+	u64 qp_handle;
+	u32 qpn;
+	u32 max_send_wr;
+	u32 max_recv_wr;
+	u32 max_send_sge;
+	u32 max_recv_sge;
+	u32 max_inline_data;
+};
+
+enum ibv_qp_attr_mask {
+	IBV_QP_STATE			= 1 << 0,
+	IBV_QP_CUR_STATE		= 1 << 1,
+	IBV_QP_EN_SQD_ASYNC_NOTIFY	= 1 << 2,
+	IBV_QP_ACCESS_FLAGS		= 1 << 3,
+	IBV_QP_PKEY_INDEX		= 1 << 4,
+	IBV_QP_PORT			= 1 << 5,
+	IBV_QP_QKEY			= 1 << 6,
+	IBV_QP_AV			= 1 << 7,
+	IBV_QP_PATH_MTU			= 1 << 8,
+	IBV_QP_TIMEOUT			= 1 << 9,
+	IBV_QP_RETRY_CNT		= 1 << 10,
+	IBV_QP_RNR_RETRY		= 1 << 11,
+	IBV_QP_RQ_PSN			= 1 << 12,
+	IBV_QP_MAX_QP_RD_ATOMIC		= 1 << 13,
+	IBV_QP_ALT_PATH			= 1 << 14,
+	IBV_QP_MIN_RNR_TIMER		= 1 << 15,
+	IBV_QP_SQ_PSN			= 1 << 16,
+	IBV_QP_MAX_DEST_RD_ATOMIC	= 1 << 17,
+	IBV_QP_PATH_MIG_STATE		= 1 << 18,
+	IBV_QP_CAP			= 1 << 19,
+	IBV_QP_DEST_QPN			= 1 << 20
+};
+
+enum ibv_qp_state {
+	IBV_QPS_RESET,
+	IBV_QPS_INIT,
+	IBV_QPS_RTR,
+	IBV_QPS_RTS,
+	IBV_QPS_SQD,
+	IBV_QPS_SQE,
+	IBV_QPS_ERR
+};
+
+
+struct ibv_modify_qp_resp {
+	enum ibv_qp_attr_mask attr_mask;
+	u8 qp_state;
+	u8 reserved[3];
+};
+
+struct ibv_create_ah_resp {
+	u64 start;
+};
+
+/*
+ * Some mlx4 specific kernel definitions. Perhaps could be in 
+ * separate file.
+ */
+
+struct mlx4_ib_user_db_page {
+	struct list_head        list;
+	struct ib_umem         *umem;
+	unsigned long           user_virt;
+	int                     refcnt;
+};
+
+
+#endif /* MX_ABI_H */

drivers/infiniband/hw/vmbus-rdma/provider.c

+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ *   K. Y. Srinivasan <kys@microsoft.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * Bug fixes/enhancements: Long Li <longli@microsoft.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/rtnetlink.h>
+#include <linux/inetdevice.h>
+#include <linux/io.h>
+#include <linux/hyperv.h>
+#include <linux/completion.h>
+#include <rdma/iw_cm.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/rdma_cm.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include "vmbus_rdma.h"
+
+/*
+ * We are emulating mlx4. XXXKYS: May have to FIX.
+ */
+#include "./user.h"
+
+static struct hvnd_dev *g_nd_dev = NULL; // the one and only one
+
+int hvnd_log_level = HVND_ERROR;
+module_param(hvnd_log_level, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(hvnd_log_level,
+	"Logging level, "
+	"0 - Error (default), "
+	"1 - Warning, "
+	"2 - Info, "
+	"3 - Debug.");
+
+static int disable_cq_notify = 1;
+//static int disable_cq_notify = 0;
+module_param(disable_cq_notify, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(disable_cq_notify,
+	"Disable CQ notification, "
+	"0 - Enable, "
+	"1 - Disable (default).");
+
+enum {
+	MLX4_USER_DEV_CAP_64B_CQE = 1L << 0
+};
+
+#define HVND_NODE_DESC "vmbus-RDMA"
+
+#undef MLX4_IB_UVERBS_ABI_VERSION
+#define MLX4_IB_UVERBS_ABI_VERSION             4 
+
+struct mlx4_wqe_data_seg {
+	__be32                  byte_count;
+	__be32                  lkey;
+	__be64                  addr;
+};
+
+/* return value:
+	true: ep is running
+	false: ep is stopped
+*/
+bool ep_add_work_pending(struct hvnd_ep_obj *ep_object)
+{
+	bool ret = true;
+	atomic_inc(&ep_object->nr_requests_pending);
+	if (ep_object->stopping) {
+		if(atomic_dec_and_test(&ep_object->nr_requests_pending))
+			wake_up(&ep_object->wait_pending);
+		ret = false;
+	}
+	return ret;
+}
+
+void ep_del_work_pending(struct hvnd_ep_obj *ep_object)
+{
+	if(atomic_dec_and_test(&ep_object->nr_requests_pending))
+		wake_up(&ep_object->wait_pending);
+
+	if(atomic_read(&ep_object->nr_requests_pending)<0) {
+		hvnd_error("ep_object->nr_requests_pending=%d type=%d cm_state=%d\n", atomic_read(&ep_object->nr_requests_pending), ep_object->type, ep_object->cm_state);
+		dump_stack();
+	}
+}
+
+void ep_stop(struct hvnd_ep_obj *ep_object)
+{
+	if (!ep_object->stopping) {
+		ep_object->stopping = true;
+		hvnd_cancel_io(ep_object);
+	}
+
+	if(atomic_read(&ep_object->nr_requests_pending)<0) {
+		hvnd_error("IO canceled, ep_object->nr_requests_pending=%d type=%d cm_state=%d\n", atomic_read(&ep_object->nr_requests_pending), ep_object->type, ep_object->cm_state);
+		dump_stack();
+	}
+
+	wait_event(ep_object->wait_pending, !atomic_read(&ep_object->nr_requests_pending));
+}
+
+static int vmbus_dma_map_sg(struct device *dev, struct scatterlist *sgl,
+		int nents, enum dma_data_direction direction, struct dma_attrs *attrs)
+{
+	struct scatterlist *sg;
+	u64 addr;
+	int i;
+	int ret = nents;
+
+	BUG_ON(!valid_dma_direction(direction));
+
+	for_each_sg(sgl, sg, nents, i) {
+		addr = (u64) page_address(sg_page(sg));
+		/* TODO: handle highmem pages */
+		if (!addr) {
+			ret = 0;
+			break;
+		}
+		sg->dma_address = addr + sg->offset;
+		sg->dma_length = sg->length;
+	}
+	return ret;
+}
+
+static void vmbus_dma_unmap_sg(struct device *dev,
+			 struct scatterlist *sg, int nents,
+			 enum dma_data_direction direction, struct dma_attrs *attrs)
+{
+	BUG_ON(!valid_dma_direction(direction));
+}
+
+
+struct dma_map_ops vmbus_dma_ops = {
+	.map_sg = vmbus_dma_map_sg,
+	.unmap_sg = vmbus_dma_unmap_sg,
+};
+
+static int hvnd_get_incoming_connections(struct hvnd_ep_obj *listener,
+					 struct hvnd_dev *nd_dev,
+					 struct hvnd_ucontext *uctx);
+
+static struct hvnd_ep_obj *hvnd_setup_ep(struct iw_cm_id *cm_id, int ep_type,
+					struct hvnd_dev *nd_dev,
+					struct hvnd_ucontext *uctx);
+
+static void hvnd_deinit_ep(struct hvnd_ep_obj *ep)
+{
+	put_irp_handle(ep->nd_dev, ep->local_irp);
+}
+
+static void hvnd_destroy_ep(struct hvnd_ep_obj *ep)
+{
+	hvnd_debug("canceling work for ep %p\n", ep);
+	cancel_work_sync(&ep->wrk.work);
+	hvnd_deinit_ep(ep);
+	kfree(ep);
+}
+
+
+#define	UC(b)	(((int)b)&0xff)
+char *debug_inet_ntoa(struct in_addr in, char *b)
+{
+	register char *p;
+
+	p = (char *)&in;
+	(void)snprintf(b, 20,
+	    "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3]));
+	return (b);
+}
+
+void hvnd_process_events(struct work_struct *work);
+
+static int hvnd_init_ep(struct hvnd_ep_obj *ep_object,
+			 struct iw_cm_id *cm_id, int ep_type,
+			 struct hvnd_dev *nd_dev,
+			 struct hvnd_ucontext *uctx)
+{
+	int ret;
+
+	ep_object->type = ep_type;
+	ep_object->cm_id = cm_id;
+	ep_object->nd_dev = nd_dev;
+	ep_object->uctx = uctx;
+
+	ep_object->parent = NULL;
+
+	ep_object->wrk.callback_arg = ep_object;
+	INIT_WORK(&ep_object->wrk.work, hvnd_process_events);
+	INIT_LIST_HEAD(&ep_object->incoming_pkt_list);
+	spin_lock_init(&ep_object->incoming_pkt_list_lock);
+
+/*
+	spin_lock_init(&ep_object->ep_lk);
+	ep_object->to_be_destroyed = false;
+	ep_object->io_outstanding = false;
+	ep_object->stopped = false;
+*/
+	ep_object->stopping = false;
+	atomic_set(&ep_object->nr_requests_pending, 0);
+	init_waitqueue_head(&ep_object->wait_pending);
+
+	ret = get_irp_handle(nd_dev, &ep_object->local_irp, (void *)ep_object);
+
+	if (ret) {
+		hvnd_error("get_irp_handle() failed: err: %d\n", ret);
+		return ret;
+	}
+	return 0;
+
+}
+
+static int set_rq_size(struct hvnd_dev *dev, struct ib_qp_cap *cap,
+			struct hvnd_qp *qp)
+{
+
+	/* HW requires >= 1 RQ entry with >= 1 gather entry */
+	if (!cap->max_recv_wr || !cap->max_recv_sge)
+		return -EINVAL;
+
+	qp->rq_wqe_cnt   = roundup_pow_of_two(max(1U, cap->max_recv_wr));
+	qp->rq_max_gs    = roundup_pow_of_two(max(1U, cap->max_recv_sge));
+	qp->rq_wqe_shift = ilog2(qp->rq_max_gs * sizeof (struct mlx4_wqe_data_seg));
+
+
+	return 0;
+}
+
+static int set_user_sq_size(struct hvnd_dev *dev,
+			    struct hvnd_qp *qp,
+			    struct mlx4_ib_create_qp *ucmd)
+{
+	qp->sq_wqe_cnt   = 1 << ucmd->log_sq_bb_count;
+	qp->sq_wqe_shift = ucmd->log_sq_stride;
+
+	qp->buf_size = (qp->rq_wqe_cnt << qp->rq_wqe_shift) +
+			(qp->sq_wqe_cnt << qp->sq_wqe_shift);
+
+	return 0;
+}
+
+static int hvnd_db_map_user(struct hvnd_ucontext *uctx, unsigned long virt,
+				struct ib_umem **db_umem) 
+{
+	struct mlx4_ib_user_db_page *page;
+	int err = 0;
+
+	mutex_lock(&uctx->db_page_mutex);
+
+	list_for_each_entry(page, &uctx->db_page_list, list)
+		if (page->user_virt == (virt & PAGE_MASK))
+			goto found;
+
+	page = kmalloc(sizeof *page, GFP_KERNEL);
+	if (!page) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	page->user_virt = (virt & PAGE_MASK);
+	page->refcnt    = 0;
+	page->umem      = ib_umem_get(&uctx->ibucontext, virt & PAGE_MASK,
+				      PAGE_SIZE, 0, 0);
+	if (IS_ERR(page->umem)) {
+		hvnd_error("ib_umem_get failure\n");
+		err = PTR_ERR(page->umem);
+		kfree(page);
+		goto out;
+	}
+
+	list_add(&page->list, &uctx->db_page_list);
+
+found:
+	++page->refcnt;
+out:
+	mutex_unlock(&uctx->db_page_mutex);
+	if (!err)
+		*db_umem = page->umem;
+
+	return err;
+}
+
+static void hvnd_db_unmap_user(struct hvnd_ucontext *uctx, u64 db_addr)
+{
+	struct mlx4_ib_user_db_page *page;
+
+	mutex_lock(&uctx->db_page_mutex);
+	list_for_each_entry(page, &uctx->db_page_list, list)
+		if (page->user_virt == (db_addr & PAGE_MASK))
+			goto found;
+
+found:
+	if (!--page->refcnt) {
+		list_del(&page->list);
+		ib_umem_release(page->umem);
+		kfree(page);
+	}
+
+	mutex_unlock(&uctx->db_page_mutex);
+}
+
+
+static void debug_check(const char *func, int line)
+{
+	hvnd_debug("func is: %s; line is %d\n", func, line);
+
+	if (in_interrupt()) {
+		hvnd_error("In interrupt func is: %s; line is %d\n", func, line);
+		return;
+	}
+}
+
+static struct ib_ah *hvnd_ah_create(struct ib_pd *pd,
+				    struct ib_ah_attr *ah_attr)
+{
+	debug_check(__func__, __LINE__);
+	return ERR_PTR(-ENOSYS);
+}
+
+static int hvnd_ah_destroy(struct ib_ah *ah)
+{
+	debug_check(__func__, __LINE__);
+	return -ENOSYS;
+}
+
+static int hvnd_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+	debug_check(__func__, __LINE__);
+	return -ENOSYS;
+}
+
+static int hvnd_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+	debug_check(__func__, __LINE__);
+	return -ENOSYS;
+}
+
+static int hvnd_process_mad(struct ib_device *ibdev,
+			    int mad_flags,
+			    u8 port_num,
+			    const struct ib_wc *in_wc,
+			    const struct ib_grh *in_grh,
+			    const struct ib_mad_hdr *in_mad,
+			    size_t in_mad_size,
+			    struct ib_mad_hdr *out_mad,
+			    size_t *out_mad_size,
+			    u16 *out_mad_pkey_index)
+{
+	debug_check(__func__, __LINE__);
+	return -ENOSYS;
+}
+
+void hvnd_acquire_uctx_ref(struct hvnd_ucontext *uctx)
+{
+	atomic_inc(&uctx->refcnt);
+}
+
+void hvnd_drop_uctx_ref(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx)
+{
+	if (atomic_dec_and_test(&uctx->refcnt)) {
+		hvnd_debug("uctx ref cnt dropped it is %d\n", atomic_read(&uctx->refcnt));
+		hvnd_debug("About to close adaptor\n");
+		hvnd_close_adaptor(nd_dev, uctx);
+	}
+	else
+		hvnd_debug("uctx ref cnt dropped it is %d\n", atomic_read(&uctx->refcnt));
+}
+
+
+static int hvnd_dealloc_ucontext(struct ib_ucontext *context)
+{
+	struct hvnd_dev *nd_dev;
+	struct hvnd_ucontext *uctx;
+
+	uctx = to_nd_context(context);
+	nd_dev = to_nd_dev(context->device);
+
+	hvnd_debug("calling %s\n", __func__);
+
+	hvnd_drop_uctx_ref(nd_dev, uctx);
+
+	return 0;
+}
+
+static struct ib_ucontext *hvnd_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata)
+{
+	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
+	struct hvnd_ucontext *uctx;
+	struct mlx4_ib_alloc_ucontext_resp resp;
+	int ret;
+
+	if (!nd_dev->ib_active) {
+		hvnd_error("ib device is not active, try again\n");
+		return ERR_PTR(-EAGAIN);
+	}
+
+	uctx = get_uctx(nd_dev, current_pid());
+	if (uctx) {
+		// it is already opened, just increase its reference count
+		hvnd_acquire_uctx_ref(uctx);
+	} else {
+
+		/*
+		 * The Windows host expects the following to be done:
+		 * 1. Successfully send struct ndv_pkt_hdr_create_1
+		 * 2. INIT PROVIDER
+		 * 3. Open Adapter
+		 * Before we can complete this call.
+		 */
+
+		uctx = kzalloc(sizeof(struct hvnd_ucontext), GFP_KERNEL);
+		if (!uctx) {
+			return ERR_PTR(-ENOMEM);
+		}
+
+		atomic_set(&uctx->refcnt, 1);
+		INIT_LIST_HEAD(&uctx->db_page_list);
+		mutex_init(&uctx->db_page_mutex);
+
+		/*
+		 * Stash away the context with the calling PID.
+		 */
+		ret = insert_handle(nd_dev, &nd_dev->uctxidr, uctx, current_pid());
+		if (ret) {
+			hvnd_error("Uctx ID insertion failed; ret is %d\n", ret);
+			goto err1;
+		}
+
+		hvnd_debug("Opening adaptor pid is %d\n", current_pid());
+
+		ret = hvnd_open_adaptor(nd_dev, uctx);
+		if (ret) {
+			hvnd_error("hvnd_open_adaptor failed ret=%d\n", ret);
+			goto err1;
+		}
+
+	}
+
+	/*
+	 * Copy the response out.
+	 */
+
+	resp.dev_caps         =	MLX4_USER_DEV_CAP_64B_CQE; 
+	resp.qp_tab_size      = uctx->o_adap_pkt.mappings.ctx_output.qp_tab_size;
+	resp.bf_reg_size      = uctx->o_adap_pkt.mappings.ctx_output.bf_reg_size;
+	resp.bf_regs_per_page =	uctx->o_adap_pkt.mappings.ctx_output.bf_regs_per_page;
+	resp.cqe_size         =	uctx->o_adap_pkt.mappings.ctx_output.cqe_size;
+
+	ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
+	if (ret) {
+		hvnd_error("ib_copy_to_udata failed ret=%d\n", ret);
+		goto err1;
+	}
+
+	return &uctx->ibucontext;
+
+err1:
+	kfree(uctx);
+	return ERR_PTR(ret);
+}
+
+static int hvnd_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+{
+	struct hvnd_ucontext *uctx = to_nd_context(context);
+
+	if (vma->vm_end - vma->vm_start != PAGE_SIZE) {
+		hvnd_error("vma not a page size, actual size=%lu\n", vma->vm_end - vma->vm_start);
+		return -EINVAL;
+	}
+
+	if (vma->vm_pgoff == 0) {
+		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+		if (io_remap_pfn_range(vma, vma->vm_start,
+					(uctx->uar_base >> PAGE_SHIFT),
+					PAGE_SIZE, vma->vm_page_prot)) {
+			hvnd_error("io_remap_pfn_range failure\n");
+			return -EAGAIN;
+		}
+	} else if (vma->vm_pgoff == 1 && uctx->bf_buf_size != 0) {
+		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+
+		if (io_remap_pfn_range(vma, vma->vm_start,
+					(uctx->uar_base >> PAGE_SHIFT) + 1, 
+					PAGE_SIZE, vma->vm_page_prot)) {
+			hvnd_error("io_remap_pfn_range failure\n");
+			return -EAGAIN;
+		}
+	} else {
+		hvnd_error("check code\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int hvnd_deallocate_pd(struct ib_pd *pd)
+{
+
+	struct hvnd_ucontext *uctx;
+	struct hvnd_dev *nd_dev;
+	struct hvnd_ib_pd *hvnd_pd;
+	struct ib_ucontext *ibuctx = pd->uobject->context;
+
+	hvnd_pd = to_nd_pd(pd);
+	nd_dev = to_nd_dev(pd->device);
+	uctx = to_nd_context(ibuctx); 
+
+	hvnd_free_handle(nd_dev, uctx, hvnd_pd->handle,
+			 IOCTL_ND_PD_FREE);
+
+	hvnd_drop_uctx_ref(nd_dev, uctx);
+	return 0;
+}
+
+static struct ib_pd *hvnd_allocate_pd(struct ib_device *ibdev,
+				      struct ib_ucontext *context,
+				      struct ib_udata *udata)
+{
+	struct hvnd_ucontext *uctx;
+	struct hvnd_dev *nd_dev;
+	int ret;
+	struct hvnd_ib_pd *hvnd_pd;
+
+
+	hvnd_pd = kzalloc(sizeof(struct hvnd_ib_pd), GFP_KERNEL);
+
+	if (!hvnd_pd) {
+		return ERR_PTR(-ENOMEM);
+	}
+
+	uctx = to_nd_context(context);
+	nd_dev = to_nd_dev(ibdev);
+
+	ret = hvnd_create_pd(uctx, nd_dev, hvnd_pd);
+	if (ret) {
+		hvnd_error("hvnd_create_pd failure ret=%d\n", ret);
+		goto error_cr_pd;
+	}
+
+	if (context) {
+		if (ib_copy_to_udata(udata, &hvnd_pd->pdn, sizeof (__u32))) {
+			hvnd_error("ib_copy_to_udata failure\n");
+			ret = -EFAULT;
+			goto error_fault;
+		}
+	}
+
+	hvnd_acquire_uctx_ref(uctx);
+	return &hvnd_pd->ibpd;
+
+error_fault:
+	hvnd_free_handle(nd_dev, uctx, hvnd_pd->handle,
+			 IOCTL_ND_PD_FREE);
+	
+error_cr_pd:
+	kfree(hvnd_pd);
+	return ERR_PTR(ret);
+}
+
+static int hvnd_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
+			   u16 *pkey)
+{
+	debug_check(__func__, __LINE__);
+	*pkey = 0;
+	return 0;
+}
+
+static int hvnd_query_gid(struct ib_device *ibdev, u8 port, int index,
+			  union ib_gid *gid)
+{
+	int ret;
+	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
+
+	debug_check(__func__, __LINE__);
+
+	ret = wait_for_completion_timeout(&nd_dev->addr_set, 60*HZ);
+	if (!ret)
+		return -ETIMEDOUT;
+
+	memset(&(gid->raw[0]), 0, sizeof(gid->raw));
+	memcpy(&(gid->raw[0]), nd_dev->mac_addr, 6);
+	return 0;
+}
+
+static int hvnd_query_device(struct ib_device *ibdev,
+			     struct ib_device_attr *props,
+			     struct ib_udata *udata)
+{
+	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
+	struct adapter_info_v2 *adap_info;
+
+	if (!nd_dev->query_pkt_set) {
+		hvnd_error("query packet not received yet\n");
+		return -ENODATA;
+	}
+
+	adap_info = &nd_dev->query_pkt.ioctl.ad_info;
+
+	memset(props, 0, sizeof *props);
+
+	/*
+	 * Copy the relevant properties out.
+	 */
+	props->fw_ver = 0;
+	props->device_cap_flags    = 0;
+	//props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
+	//props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
+	//props->device_cap_flags |= IB_DEVICE_XRC;
+
+	props->vendor_id           =  0x15b3;
+	props->vendor_part_id      = adap_info->device_id;
+
+	props->max_mr_size         = ~0ull;
+	props->page_size_cap       = PAGE_SIZE;
+	props->max_qp              = 16384;
+	props->max_qp_wr           = min(adap_info->max_recv_q_depth,
+					 adap_info->max_initiator_q_depth);
+
+	props->max_sge             = min(adap_info->max_initiator_sge, 
+					 adap_info->max_recv_sge);
+	props->max_cq              = 0x1FFFF;
+	props->max_cqe             = adap_info->max_completion_q_depth;
+	props->max_mr              = 16384;
+	props->max_pd              = 16384;
+
+	props->max_qp_rd_atom      = adap_info->max_inbound_read_limit;
+	props->max_qp_init_rd_atom = adap_info->max_outbound_read_limit;
+	props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
+	props->max_srq             = 16384;
+	props->max_srq_wr          = adap_info->max_recv_q_depth;
+	props->max_srq_sge         = adap_info->max_recv_sge;
+
+	return 0;
+}
+
+static int hvnd_query_port(struct ib_device *ibdev, u8 port,
+			   struct ib_port_attr *props)
+{
+	memset(props, 0, sizeof(struct ib_port_attr));
+
+	props->max_mtu = IB_MTU_4096;
+	props->active_mtu = IB_MTU_4096;
+
+	/*
+	 * KYS: TBD need to base this on netdev.
+	 */
+	props->state = IB_PORT_ACTIVE;
+
+	props->port_cap_flags = IB_PORT_CM_SUP;
+
+	props->gid_tbl_len = 1;
+	props->pkey_tbl_len = 1;
+	props->active_width = 1;
+	props->active_speed = IB_SPEED_DDR; //KYS: check
+	props->max_msg_sz = -1;
+
+	return 0;
+}
+
+static enum rdma_link_layer
+hvnd_get_link_layer(struct ib_device *device, u8 port)
+{
+	return IB_LINK_LAYER_ETHERNET;
+}
+
+static ssize_t hvnd_show_rev(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	return 0;
+}
+
+static ssize_t hvnd_show_fw_ver(struct device *dev, struct device_attribute *attr,
+			   char *buf)
+{
+	return 0;
+}
+
+static ssize_t hvnd_show_hca(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	return 0;
+}
+
+static ssize_t hvnd_show_board(struct device *dev, struct device_attribute *attr,
+			  char *buf)
+{
+	return 0; 
+}
+
+static int hvnd_get_port_immutable(struct ib_device *ibdev, u8 port_num, struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = hvnd_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;
+}
+
+static struct ib_qp *hvnd_ib_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
+			     struct ib_udata *udata)
+{
+	struct hvnd_ucontext *uctx;
+	struct hvnd_dev *nd_dev;
+	struct mlx4_ib_create_qp ucmd;
+	struct hvnd_qp *qp;
+	int ret = 0;
+	struct hvnd_ib_pd *hvnd_pd = to_nd_pd(pd);
+	struct hvnd_cq *send_cq = to_nd_cq(attrs->send_cq); 
+	struct hvnd_cq *recv_cq = to_nd_cq(attrs->recv_cq); 
+
+	uctx = get_uctx_from_pd(pd);
+	nd_dev = to_nd_dev(pd->device);
+
+	if (attrs->qp_type != IB_QPT_RC)
+	{
+		hvnd_error("attrs->qp_type=%d not IB_QPT_RC\n", attrs->qp_type);
+		return ERR_PTR(-EINVAL);
+	}
+
+	qp = kzalloc(sizeof *qp, GFP_KERNEL);
+	if (!qp) {
+		ret = -ENOMEM;
+		goto err_done;
+	}
+
+	qp->uctx = uctx;
+
+	if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
+		hvnd_error("ib_copy_from_udata failed\n");
+		ret = -EFAULT;
+		goto err_ucpy;
+	}
+
+	qp->qp_buf = (void *)ucmd.buf_addr;
+	qp->db_addr = (void *)ucmd.db_addr;
+	qp->log_sq_bb_count = ucmd.log_sq_bb_count;
+	qp->log_sq_stride = ucmd.log_sq_stride;
+	qp->sq_no_prefetch = ucmd.sq_no_prefetch;
+	qp->port = attrs->port_num;
+
+	init_waitqueue_head(&qp->wait);
+	atomic_set(&qp->refcnt, 1);
+
+
+	qp->recv_cq = recv_cq;
+	qp->send_cq = send_cq;
+	qp->nd_dev = nd_dev;
+
+	qp->receive_cq_handle = recv_cq->cq_handle; 
+	qp->initiator_cq_handle = send_cq->cq_handle; 
+	qp->pd_handle = hvnd_pd->handle; 
+	qp->cq_notify = false;
+
+	qp->ibqp.qp_num = attrs->qp_type == IB_QPT_SMI ? 0 : 1;
+
+	qp->max_inline_data = attrs->cap.max_inline_data;
+
+	qp->initiator_q_depth = attrs->cap.max_send_wr;
+	qp->initiator_request_sge = attrs->cap.max_send_sge;
+
+
+	qp->receive_q_depth = attrs->cap.max_recv_wr;
+	qp->receive_request_sge = attrs->cap.max_recv_sge;
+
+	set_rq_size(nd_dev, &attrs->cap, qp);
+
+	set_user_sq_size(nd_dev, qp, &ucmd);
+
+	qp->umem = ib_umem_get(&uctx->ibucontext, ucmd.buf_addr,
+				qp->buf_size, 0, 0);
+		if (IS_ERR(qp->umem)) {
+		ret = PTR_ERR(qp->umem);
+		hvnd_error("ib_umem_get failed ret=%d\n", ret);
+		goto err_ucpy;
+	}
+
+	ret =  hvnd_db_map_user(uctx, ucmd.db_addr, &qp->db_umem);
+
+	if (ret) {
+		hvnd_error("hvnd_db_map_user failed ret=%d\n", ret);
+		goto err_db_map;
+	}
+
+	ret = hvnd_create_qp(nd_dev, uctx, qp);
+
+	if (ret) {
+		hvnd_error("hvnd_create_qp failed ret=%d\n", ret);
+		goto err_qp;
+	}
+
+	hvnd_acquire_uctx_ref(uctx);
+
+	qp->ibqp.qp_num = qp->qpn;
+	qp->ibqp.qp_type = IB_QPT_RC; 
+
+
+	return &qp->ibqp;
+
+err_qp:
+	hvnd_db_unmap_user(uctx, ucmd.db_addr);
+
+err_db_map:
+	ib_umem_release(qp->umem);
+
+err_ucpy:
+	kfree(qp);
+err_done:
+	return ERR_PTR(ret);
+}
+
+static int hvnd_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+			     int attr_mask, struct ib_udata *udata)
+{
+	struct hvnd_qp *qp = to_nd_qp(ibqp);
+	struct hvnd_dev *nd_dev = to_nd_dev(ibqp->device);
+	enum ib_qp_state cur_state, new_state;
+	int ret = 0;
+
+	if (attr != NULL) {
+
+	        cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->qp_state;
+	   	new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
+
+		hvnd_debug("qp->qp_state is %d new state is %d\n", qp->qp_state, new_state);
+		hvnd_debug("current qp state is %d\n", cur_state);
+		if (attr_mask & IB_QP_STATE) {
+			/* Ensure the state is valid */
+			if (attr->qp_state < 0 || attr->qp_state > IB_QPS_ERR) 
+			{
+				hvnd_error("incorrect qp state attr->qp_state=%d\n", attr->qp_state);
+				return EINVAL;
+			}
+
+			if (qp->qp_state != new_state) {
+				qp->qp_state = new_state;
+				/*
+			 	* The only state transition supported is the transition to
+			 	* error state.
+			 	*/
+				switch (new_state) {
+				case IB_QPS_ERR:
+				case IB_QPS_SQD:
+					ret = hvnd_flush_qp(nd_dev, qp->uctx, qp);
+
+					if (ret)
+						hvnd_error("hvnd_flush_qp failed ret=%d\n", ret);
+
+					// immediately notify the upper layer on disconnection
+					if (!ret && qp->connector)
+						hvnd_process_notify_disconnect(qp->connector, STATUS_SUCCESS);
+
+					return ret;
+
+				default:
+					break;
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+
+static int hvnd_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+		     int attr_mask, struct ib_qp_init_attr *init_attr)
+{
+	struct hvnd_qp *qp = to_nd_qp(ibqp);
+
+	memset(attr, 0, sizeof *attr);
+	memset(init_attr, 0, sizeof *init_attr);
+
+	attr->qp_state = qp->qp_state;
+
+	init_attr->cap.max_send_wr = qp->max_send_wr;
+	init_attr->cap.max_recv_wr = qp->max_recv_wr;
+
+	init_attr->cap.max_send_sge = qp->max_send_sge;
+	init_attr->cap.max_recv_sge = qp->max_recv_sge;
+	init_attr->cap.max_inline_data = qp->max_inline_data;
+
+	init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
+
+	return 0;
+}
+
+static void hvnd_refuse_connection(struct hvnd_ep_obj *connector, int status);
+static int hvnd_destroy_qp(struct ib_qp *ib_qp)
+{
+	int ret;
+	struct hvnd_qp *qp = to_nd_qp(ib_qp);
+	struct hvnd_dev *nd_dev = to_nd_dev(ib_qp->device);
+	u64 jiffies;
+
+	if (!qp->connector) {
+		hvnd_warn("error: connector is NULL; skip destroying connector\n");
+		goto free_qp;
+	}
+
+	/* should we flush the qp first on ctrl-C? , no need to disconnect on abrupt shutdown?*/
+	if(qp->qp_state != IB_QPS_ERR && qp->qp_state != IB_QPS_SQD) {
+		hvnd_warn("qp_state=%d, doing abrupt disconnect\n", qp->qp_state);
+		hvnd_flush_qp(nd_dev, qp->uctx, qp);
+
+		ep_stop(qp->connector);
+
+		// now no pending activity is possible on the connector
+
+		switch (qp->connector->cm_state) {
+
+		case hvnd_cm_idle:
+		case hvnd_cm_connect_reply_refused:
+		case hvnd_cm_connect_request_sent:
+		case hvnd_cm_close_sent:
+			hvnd_warn("cm_state = %d not doing anything\n", qp->connector->cm_state);
+			break;
+
+		case hvnd_cm_connect_received:
+			hvnd_warn("cm_state = %d refusing pending connection request\n", qp->connector->cm_state);
+			hvnd_refuse_connection(qp->connector, -ECONNREFUSED);
+			break;
+
+		case hvnd_cm_connect_reply_sent:
+		case hvnd_cm_established_sent:
+		case hvnd_cm_accept_sent:
+			hvnd_warn("cm_state = %d notifying disconnect on existing connection\n", qp->connector->cm_state);
+			hvnd_process_notify_disconnect(qp->connector, STATUS_CANCELLED);
+			break;
+
+		default:
+			hvnd_error("unknown cm_state = %d\n", qp->connector->cm_state);
+
+		}
+		goto free_connector;
+	} else {
+		hvnd_debug("qp_state=%d, doing normal disconnect\n", qp->qp_state);
+	}
+
+	if (!ep_add_work_pending(qp->connector))
+		goto free_connector;
+
+	init_completion(&qp->connector->disconnect_event);
+
+	/*
+	 * First issue a disconnect on the connector.
+	 */
+
+	hvnd_debug("calling hvnd_connector_disconnect\n");
+	ret = hvnd_connector_disconnect(nd_dev, qp->uctx,
+					qp->connector->ep_handle,
+					qp->connector);
+	if (ret) {
+		ep_del_work_pending(qp->connector);
+		hvnd_error("disconnect: retval is %d\n", ret);
+		ep_stop(qp->connector);
+		goto free_connector;
+	}
+	/*
+	 * Now wait for the disconnect.
+	 */
+	jiffies = get_jiffies_64();
+	wait_for_completion(&qp->connector->disconnect_event);
+	hvnd_debug("Completed disconnect connector=%p jiffies=%llu\n", qp->connector, get_jiffies_64() - jiffies);
+
+	/*
+	 * Now free up the connector and drop the reference on uctx.
+	 */
+
+	ep_stop(qp->connector);
+
+free_connector:
+	hvnd_debug("destroying connector handle: %p\n", (void *) qp->connector->ep_handle);
+	hvnd_free_handle(nd_dev, qp->uctx,
+			 qp->connector->ep_handle,
+			 IOCTL_ND_CONNECTOR_FREE);
+
+	hvnd_drop_uctx_ref(nd_dev, qp->uctx);
+	hvnd_destroy_ep(qp->connector);
+	qp->connector = NULL;
+free_qp:
+	atomic_dec(&qp->refcnt);
+	hvnd_debug("Waiting for the ref cnt to go to 0\n");
+
+	wait_event(qp->wait, !atomic_read(&qp->refcnt));
+
+	hvnd_debug("About to destroy qp\n");
+	hvnd_db_unmap_user(qp->uctx, (u64)qp->db_addr);
+	ib_umem_release(qp->umem);
+
+	hvnd_debug("About to free qp\n");
+	ret = hvnd_free_qp(nd_dev, qp->uctx, qp);
+
+	if (ret == 0) {
+		hvnd_drop_uctx_ref(nd_dev, qp->uctx);
+		kfree(qp);
+	} else {
+		hvnd_error("free qp failed: ret is %d\n", ret);
+	}
+
+	return ret;
+}
+
+static struct ib_cq *hvnd_ib_create_cq(struct ib_device *ibdev,
+				       const struct ib_cq_init_attr *attr,
+				       struct ib_ucontext *ib_context,
+				       struct ib_udata *udata)
+{
+	struct hvnd_ucontext *uctx;
+	struct hvnd_dev *nd_dev;
+	struct mlx4_ib_create_cq ucmd;
+	struct hvnd_cq *cq;
+	int ret = 0;
+	int entries = attr->cqe;
+
+	uctx = to_nd_context(ib_context);
+	nd_dev = to_nd_dev(ibdev);
+
+	if (entries < 1 || entries > uctx->max_cqe) {
+		hvnd_error("incorrct entries=%d\n", entries);
+		ret = -EINVAL;
+		goto err_done;
+	}
+
+	cq = kzalloc(sizeof *cq, GFP_KERNEL);
+	if (!cq) {
+		ret = -ENOMEM;
+		goto err_done;
+	}
+
+	entries      = roundup_pow_of_two(entries + 1);
+	cq->ibcq.cqe = entries - 1;
+	cq->entries = entries;
+	cq->uctx = uctx;
+
+	if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
+		hvnd_error("ib_copy_from_udata failed\n");
+		ret = -EFAULT;
+		goto err_ucpy;
+	}
+
+	cq->cq_buf = (void *)ucmd.buf_addr;
+	cq->db_addr = (void *)ucmd.db_addr;
+	cq->arm_sn = 0; 
+
+	/*
+	 * Initialize the IRP state. Need to have a separate irp state
+	 * for CQ; for now share it with Listener/connector.
+	 */
+	ret = hvnd_init_ep(&cq->ep_object, NULL, ND_CQ, nd_dev, uctx);
+
+	if (ret) {
+		hvnd_error("hvnd_init_ep failed ret=%d\n", ret);
+		goto  err_ucpy;
+	}
+
+	cq->ep_object.cq = cq;
+	cq->monitor = true;
+
+	cq->umem = ib_umem_get(ib_context, ucmd.buf_addr,
+				(entries * uctx->cqe_size),
+				IB_ACCESS_LOCAL_WRITE, 1);
+		if (IS_ERR(cq->umem)) {
+		ret = IS_ERR(cq->umem);
+		hvnd_error("ib_umem_get failed ret=%d\n", ret);
+		goto err_ucpy;
+	}
+
+	ret =  hvnd_db_map_user(uctx, ucmd.db_addr, &cq->db_umem);
+
+	if (ret) {
+		hvnd_error("hvnd_db_map_user failed ret=%d\n", ret);
+		goto err_db_map;
+	}
+
+	ret = hvnd_create_cq(nd_dev, uctx, cq);
+
+	if (ret) {
+		hvnd_error("hvnd_create_cq failed ret=%d\n", ret);
+		goto err_cq;
+	}
+
+	cq->ep_object.ep_handle = cq->cq_handle;
+
+	if (ib_copy_to_udata(udata, &cq->cqn, sizeof (__u32))) {
+		hvnd_error("ib_copy_to_udata failed\n");
+		ret = -EFAULT;
+		goto err_ucpy_out;
+	}
+
+	if (!disable_cq_notify) {
+
+		if (!ep_add_work_pending(&cq->ep_object))
+			goto err_ucpy_out;
+
+		ret = hvnd_notify_cq(nd_dev, cq, ND_CQ_NOTIFY_ANY,
+			     (u64)&cq->ep_object);
+
+		if (ret) {
+			ep_del_work_pending(&cq->ep_object);
+			hvnd_error("hvnd_notify_cq failed ret=%d\n", ret);
+			goto err_ucpy_out;
+		}
+	}
+
+	hvnd_acquire_uctx_ref(uctx);
+
+	return &cq->ibcq;
+
+err_ucpy_out:
+	hvnd_destroy_cq(nd_dev, cq);
+
+err_cq:
+	hvnd_db_unmap_user(uctx, ucmd.db_addr);
+
+err_db_map:
+	ib_umem_release(cq->umem);
+
+err_ucpy:
+	kfree(cq);
+err_done:
+	return ERR_PTR(ret);
+}
+
+static struct ib_qp *hvnd_get_qp(struct ib_device *dev, int qpn)
+{
+	struct hvnd_dev *nd_dev;
+	struct hvnd_qp *qp = NULL;
+
+	nd_dev = to_nd_dev(dev);
+	qp = get_qpp(nd_dev, qpn);
+	return (qp?&qp->ibqp:NULL);
+}
+
+static int hvnd_ib_destroy_cq(struct ib_cq *ib_cq)
+{
+	struct hvnd_ucontext *uctx;
+	struct hvnd_dev *nd_dev;
+	struct hvnd_cq *cq;
+
+	cq = to_nd_cq(ib_cq);
+	uctx = cq->uctx;
+	nd_dev = to_nd_dev(uctx->ibucontext.device);
+
+	cq->monitor = false;
+
+//	hvnd_cancel_io(&cq->ep_object);
+	ep_stop(&cq->ep_object);
+
+	hvnd_deinit_ep(&cq->ep_object);
+
+	hvnd_db_unmap_user(uctx, (u64)cq->db_addr);
+	ib_umem_release(cq->umem);
+
+	hvnd_destroy_cq(nd_dev, cq);
+
+	hvnd_drop_uctx_ref(nd_dev, uctx);
+	kfree(cq);
+
+	return 0;
+}
+
+static int hvnd_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
+{
+	/*
+	 * NDDirect does not support resizing CQ.
+	 */
+	hvnd_info("check code\n");
+	return -ENOSYS;
+}
+
+static int hvnd_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+	hvnd_info("check code\n");
+	return 0;
+}
+
+static struct ib_mr *hvnd_get_dma_mr(struct ib_pd *pd, int acc)
+{
+	hvnd_info("check code\n");
+	return NULL;
+}
+
+static void debug_dump_umem(struct ib_umem *umem)
+{
+#ifdef HVND_MEM_DEBUG
+	struct ib_umem_chunk *chunk;
+	struct scatterlist *sg;
+	int len, j, entry;
+	int shift = ffs(umem->page_size) - 1;
+
+	hvnd_debug("umem=%p\n", umem);
+	hvnd_debug("context=%p length=%lu offset=%d page_size=%d writable=%d hugetlb=%d\n",
+		umem->context,
+		umem->length,
+		umem->offset,
+		umem->page_size,
+		umem->writable,
+		umem->hugetlb);
+
+	list_for_each_entry(chunk, &umem->chunk_list, list) {
+		hvnd_debug("chunk->nmap=%d\n", chunk->nmap);
+		for (j = 0; j < chunk->nmap; ++j) {
+			sg = &chunk->page_list[j];
+			hvnd_debug("sg_dma_len=%d sg_dma_address=%llx\n", sg_dma_len(sg), sg_dma_address(sg));
+			hvnd_debug("page_link=%lx offset=%u length=%u\n", sg->page_link, sg->offset, sg->length);
+			len = sg_dma_len(&chunk->page_list[j]) >> shift;
+			for_each_sg(&chunk->page_list[j], sg, len, entry) {
+				hvnd_debug("PFN=%lu\n", page_to_pfn(sg_page(sg)));
+			}
+		}
+	}
+#endif
+}
+
+
+static struct ib_mr *hvnd_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+				      u64 virt, int acc, struct ib_udata *udata)
+{
+	int err = 0;
+	struct hvnd_ib_pd *hvndpd = to_nd_pd(pd);
+	struct hvnd_mr *mr;
+
+	mr = kmalloc(sizeof(*mr), GFP_KERNEL);
+	if (!mr) {
+		return ERR_PTR(-ENOMEM);
+	}
+	mr->pd = hvndpd;
+
+	mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
+	if (IS_ERR(mr->umem)) {
+		err = PTR_ERR(mr->umem);
+		hvnd_error("ib_umem_get failed ret=%d\n", err);
+		kfree(mr);
+		return ERR_PTR(err);
+	}
+
+	debug_dump_umem(mr->umem);
+
+	mr->start = start;
+	mr->length = length;
+	mr->virt = virt;
+	mr->acc = acc;
+
+	hvnd_debug("start=%llx length=%llx virt=%llx acc=%d\n", start, length, virt, acc);
+
+	/*
+	 * First create a memory region.
+	 */
+	err = hvnd_cr_mr(to_nd_dev(pd->device),
+			to_nd_context(pd->uobject->context), hvndpd->handle,
+			&mr->mr_handle);
+	if (err) {
+		hvnd_error("cr_mr failed; ret is %d\n", err);
+		goto err;
+	}
+
+	err =  hvnd_mr_register(to_nd_dev(pd->device),
+				to_nd_context(pd->uobject->context), mr);
+
+	if (err)
+		goto err0;
+
+	hvnd_acquire_uctx_ref(to_nd_context(pd->uobject->context));
+
+	return &mr->ibmr;
+
+err0:
+	hvnd_free_mr(to_nd_dev(pd->device),
+		to_nd_context(pd->uobject->context), mr->mr_handle);
+err:
+	ib_umem_release(mr->umem);
+	kfree(mr);
+	return ERR_PTR(err);
+}
+
+
+
+static int hvnd_dereg_mr(struct ib_mr *ib_mr)
+{
+	int ret;
+	struct hvnd_mr *mr = to_nd_mr(ib_mr);
+	struct hvnd_ucontext *uctx = to_nd_context(ib_mr->pd->uobject->context);
+	struct hvnd_dev *nd_dev = to_nd_dev(ib_mr->device);
+
+	
+	hvnd_debug("dereg_mr entering\n");
+
+	ret = hvnd_deregister_mr(nd_dev, uctx, mr->mr_handle);
+
+	if (ret) {
+		hvnd_error("hvnd_deregister_mr() failed: %x\n", ret);
+		return ret;
+	}
+	/*
+	 * Now free up the memory region.
+	 */
+
+	ret = hvnd_free_mr(nd_dev, uctx, mr->mr_handle);
+	if (ret) {
+		hvnd_error("hvnd_free_mr() failed: %x\n", ret);
+		return ret;
+	}
+
+	ib_umem_release(mr->umem);
+
+	hvnd_drop_uctx_ref(nd_dev, uctx);
+	kfree(mr);
+	
+	hvnd_debug("dereg_mr done\n");
+	return 0;
+}
+
+static struct ib_mw *hvnd_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
+{
+	hvnd_info("check code\n");
+	return NULL;
+}
+
+static int hvnd_dealloc_mw(struct ib_mw *mw)
+{
+	debug_check(__func__, __LINE__);
+	return 0;
+}
+
+static int hvnd_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
+{
+	struct hvnd_ucontext *uctx;
+	struct hvnd_dev *nd_dev;
+	struct hvnd_cq *cq;
+
+	cq = to_nd_cq(ibcq);
+	uctx = cq->uctx;
+	nd_dev = to_nd_dev(uctx->ibucontext.device);
+
+
+	debug_check(__func__, __LINE__);
+
+	return 0;
+}
+
+static int hvnd_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+			  struct ib_send_wr **bad_wr)
+{
+	debug_check(__func__, __LINE__);
+	return 0;
+}
+
+int hvnd_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+		      struct ib_recv_wr **bad_wr)
+{
+	debug_check(__func__, __LINE__);
+	return 0;
+}
+
+static int hvnd_resolve_addr(struct sockaddr_in *laddr, struct sockaddr_in *raddr,
+			     struct if_physical_addr *phys_addrstruct)
+{
+	int ret;
+
+	phys_addrstruct->length = ETH_ALEN;
+	ret = hvnd_get_neigh_mac_addr((struct sockaddr *)laddr, 
+					(struct sockaddr *)raddr,
+					phys_addrstruct->addr);
+
+	hvnd_debug("Dest MAC is %pM\n", phys_addrstruct->addr);
+	return ret;
+}
+	
+static int hvnd_connect(struct iw_cm_id *cm_id,
+			struct iw_cm_conn_param *conn_param)
+{
+	int ret = 0;
+	struct hvnd_dev *nd_dev;
+	struct hvnd_ep_obj  *ep_object;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
+	struct hvnd_qp *qp;
+	struct if_physical_addr phys_addrstruct;
+	union nd_sockaddr_inet dest_addr;
+	u64 connector_handle;
+	union nd_sockaddr_inet addr;
+	char addr_buf[50];
+
+	if (cm_id->remote_addr.ss_family != AF_INET) {
+		hvnd_error("cm_id->remote_addr.ss_family=%d not AF_INET\n", cm_id->remote_addr.ss_family);
+		return -ENOSYS;
+	}
+
+	qp = get_qpp(to_nd_dev(cm_id->device), conn_param->qpn);
+
+	if (!qp)
+	{
+		hvnd_error("failed to find qp conn_param->qpn=%d\n", conn_param->qpn);
+		return -EINVAL;
+	}
+
+	cm_id->provider_data = qp;
+	cm_id->add_ref(cm_id);
+	qp->cm_id = cm_id;
+
+	/*
+	 * Set the read/write limits.
+	 * Can we change the limits on a created QP? Luke?
+	 */
+	nd_dev = to_nd_dev(cm_id->device);
+	ep_object = hvnd_setup_ep(cm_id, ND_CONNECTOR, nd_dev, qp->uctx);
+	hvnd_debug("active connection: local irp is %d\n", ep_object->local_irp);
+	if (!ep_object) {
+		hvnd_error("hvnd_setup_ep failure\n");
+		ret = -ENOMEM;
+		goto err_limit;
+	}
+
+	ret = hvnd_cr_connector(nd_dev, qp->uctx,
+				&connector_handle);
+
+	if (ret) {
+		hvnd_error("hvnd_cr_connector failure ret=%d\n", ret);
+		goto err_cr_connector;
+	}
+
+	hvnd_acquire_uctx_ref(qp->uctx);
+	ep_object->ep_handle = connector_handle;
+	ep_object->incoming = false;
+	qp->connector = ep_object;
+
+	/*
+	 * Bind the local address to the connector.
+	 */
+	hvnd_debug("Connect local address is %s\n", debug_inet_ntoa(laddr->sin_addr, addr_buf));
+
+	memcpy(&addr.ipv4, laddr, sizeof(struct sockaddr_in));
+	hvnd_debug("CONNECT AF %d port %d addr %s\n", addr.ipv4.sin_family, addr.ipv4.sin_port, debug_inet_ntoa(addr.ipv4.sin_addr, addr_buf));
+
+	ret = hvnd_bind_connector(nd_dev, qp->uctx,
+				connector_handle,
+				&addr);
+
+	if (ret) {
+		hvnd_error("hvnd_bind_connector failed ret=%d\n", ret);
+		goto err_bind_connector;
+	}
+
+	printk(KERN_ERR "LL %s: laddr=%pI4 raddr=%pI4\n", __func__, &laddr->sin_addr, &raddr->sin_addr);
+	ret = hvnd_resolve_addr(laddr, raddr, &phys_addrstruct);
+	if (ret) {
+		hvnd_error("hvnd_resolve_addr failed ret=%d\n", ret);
+		goto err_bind_connector;
+	}
+
+	memcpy(&dest_addr.ipv4, raddr, sizeof(struct sockaddr_in));
+
+
+
+	/*
+	 * Now attempt to connect.
+	 */
+
+	hvnd_debug("About to initiate connection\n");
+
+	if (!ep_add_work_pending(ep_object))
+		goto err_bind_connector;
+
+	ep_object->cm_state = hvnd_cm_connect_received;
+	ret = hvnd_connector_connect(nd_dev, qp->uctx,
+					ep_object->ep_handle,
+					conn_param->ird, conn_param->ord,
+					conn_param->private_data_len,
+					(u8 *)conn_param->private_data,
+					qp->qp_handle, 
+					&phys_addrstruct, &dest_addr,
+					ep_object);
+
+	if (ret == 0) {
+		return 0;
+	} else {
+		ep_object->cm_state = hvnd_cm_idle;
+		ep_del_work_pending(ep_object);
+		hvnd_error("hvnd_connector_connect failed ret=%d\n", ret);
+	}
+
+err_bind_connector:
+	qp->connector = NULL;
+	hvnd_free_connector(nd_dev, qp->uctx,
+			    connector_handle);
+	hvnd_drop_uctx_ref(nd_dev, qp->uctx);
+
+err_cr_connector:
+	kfree(ep_object);
+
+err_limit:
+	cm_id->provider_data = NULL;
+	qp->cm_id = NULL;
+	cm_id->rem_ref(cm_id);
+	return ret;
+}
+
+static int hvnd_accept_cr(struct iw_cm_id *cm_id,
+			  struct iw_cm_conn_param *conn_param)
+{
+	int ret = 0;
+	struct hvnd_dev *nd_dev;
+	struct hvnd_qp *qp;
+	struct hvnd_ep_obj *connector;
+	enum ibv_qp_state new_qp_state;
+
+	hvnd_debug("Accepting connection - PASSIVE\n");
+	nd_dev = to_nd_dev(cm_id->device);
+	qp = get_qpp(to_nd_dev(cm_id->device), conn_param->qpn);
+
+	if (!qp) {
+		hvnd_error("get_qpp failed conn_param->qpn=%d\n", conn_param->qpn);
+		return -EINVAL;
+	}
+
+
+	connector = (struct hvnd_ep_obj *)cm_id->provider_data;
+	qp->connector = connector;
+
+	if (connector == NULL) {
+		hvnd_error("NULL connector!\n");
+		return -EINVAL;
+	}
+	hvnd_debug("connector's cm_id is %p caller cm_id=%p\n", connector->cm_id, cm_id);
+
+	connector->cq = qp->recv_cq;
+
+
+	/*
+	 * Setup state for the accepted connection.
+	 */
+	cm_id->add_ref(cm_id);
+	connector->cm_id = cm_id;
+        if (conn_param == NULL) {
+                hvnd_error("NULL conn_param!\n");
+                return -EINVAL;
+        }
+
+        connector->ord = conn_param->ord;
+        connector->ird = conn_param->ird;
+
+	if (!ep_add_work_pending(connector))
+		goto error;
+
+	init_completion(&connector->connector_accept_event);
+
+	ret = hvnd_connector_accept(nd_dev, qp->uctx, connector->ep_handle,
+				    qp->qp_handle, conn_param->ird,
+				    conn_param->ord, conn_param->private_data_len,
+				    conn_param->private_data,
+				    &new_qp_state, connector); 
+
+	if (ret) {
+		ep_del_work_pending(connector);
+		hvnd_error("connector accept failed\n");
+		goto error;
+	}
+
+	wait_for_completion(&connector->connector_accept_event);
+	ret = connector->connector_accept_status;
+
+	if(ret) {
+		hvnd_error("connector_accept failed status=%x\n", ret);
+		ret = -EIO;
+		goto error;
+	}
+
+	hvnd_debug("Passive Connection Accepted; new qp state is %d\n", new_qp_state);
+	connector->cm_state = hvnd_cm_accept_sent;
+	return 0;
+
+error:
+	ep_stop(connector);
+	connector->cm_id = NULL;
+	connector->cm_state = hvnd_cm_idle;
+
+	qp->connector = NULL;
+	cm_id->rem_ref(cm_id);
+
+	return ret;
+}
+
+static int hvnd_reject_cr(struct iw_cm_id *cm_id, const void *pdata,
+			  u8 pdata_len)
+{
+	debug_check(__func__, __LINE__);
+	return 0;
+}
+
+void hvnd_process_disconnect(struct hvnd_ep_obj *ep_object, int status)
+{
+	struct iw_cm_event cm_event;
+
+	switch (status) {
+	case STATUS_SUCCESS:
+	case STATUS_CANCELLED:
+		break;
+
+	default:
+		hvnd_warn("disconnect complete failed: status:%d\n", status);
+	}
+
+
+	hvnd_debug("active disconnect processed\n");
+	memset(&cm_event, 0, sizeof(cm_event));
+
+	complete(&ep_object->disconnect_event);
+}
+
+
+void hvnd_process_notify_disconnect(struct hvnd_ep_obj *ep_object, int status)
+{
+	struct iw_cm_event cm_event;
+
+	// make sure we only disconnect once
+	if (atomic_xchg(&ep_object->disconnect_notified, 1))
+		return;
+
+	/*
+	 * Turn off CQ monitoring.
+	 */
+	if (ep_object->cq)
+		ep_object->cq->monitor = false;
+
+	switch(ep_object->cm_state) {
+		case hvnd_cm_connect_reply_sent:
+		case hvnd_cm_established_sent:
+		case hvnd_cm_accept_sent:
+			break;
+
+		default:
+			hvnd_error("unexpected cm_state=%d\n", ep_object->cm_state);
+			return;
+	}
+
+	switch (status) {
+	case STATUS_SUCCESS:
+	case STATUS_CANCELLED:
+	case STATUS_DISCONNECTED:
+		break;
+
+	default:
+		hvnd_warn("notify disconnect complete failed: status:%d\n", status);
+	}
+
+	hvnd_debug("passive disconnect notified\n");
+	memset(&cm_event, 0, sizeof(cm_event));
+
+	/*
+	 * Other end disconnected.
+	 * Connection has been disconnected; 
+	 * notify the cm layer.
+	 */
+	cm_event.status = -ECONNRESET;
+	cm_event.event = IW_CM_EVENT_CLOSE;
+
+	if ((ep_object->cm_id) &&
+	    (ep_object->cm_id->event_handler)) {
+
+		ep_object->cm_id->event_handler(ep_object->cm_id, &cm_event);
+
+		ep_object->cm_id->rem_ref(ep_object->cm_id);
+		ep_object->cm_state = hvnd_cm_close_sent;
+	}
+}
+
+void hvnd_process_connector_accept(struct hvnd_ep_obj *ep_object, int status)
+{
+	struct iw_cm_event cm_event;
+	int ret;
+
+	/* this is the problem area the return status may be 
+	   1: 0xc00000b5 (3221225653) - {Device Timeout}  The specified I/O operation on %hs was not completed before the time-out period expired
+	   2: NTSTATUS 0xc0000241 (3221226049) - The transport connection was aborted by the local system.
+	 if we do nothing here, iwcm will wait for IW_CM_EVENT_ESTABLISHED forever, and unable to clean shutdown
+	 need to fail the call eariler on accept 
+	*/
+
+	ep_object->connector_accept_status = status;
+
+	if (status) {
+		hvnd_error("Connector accept failed; status is %x\n", status);
+		complete(&ep_object->connector_accept_event);
+		return;
+	}
+
+	memset(&cm_event, 0, sizeof(cm_event));
+	cm_event.event = IW_CM_EVENT_ESTABLISHED;
+	cm_event.ird = ep_object->ird;
+	cm_event.ord = ep_object->ord;
+	cm_event.provider_data = (void*)ep_object;
+
+	/*
+	 * We have successfully passively accepted the
+	 * incoming connection.
+	 */
+
+	hvnd_debug("Passive connection accepted!!\n");
+	if ((ep_object->cm_id) &&
+	    (ep_object->cm_id->event_handler)) {
+		ep_object->cm_id->event_handler(ep_object->cm_id, &cm_event);
+		ep_object->cm_state = hvnd_cm_established_sent;
+	}
+
+	complete(&ep_object->connector_accept_event);
+
+	/*
+	 * Request notification if the other end
+	 * were to disconnect.
+	 */
+	if (!ep_add_work_pending(ep_object))
+		return;
+
+	ret = hvnd_connector_notify_disconnect(ep_object->nd_dev,
+						   ep_object->uctx,
+						   ep_object->ep_handle,
+						   ep_object);
+
+	if (ret) {
+		ep_del_work_pending(ep_object);
+		hvnd_error("Connector notify disconnect failed; ret: %d\n", ret);
+	}
+}
+
+
+void hvnd_process_cq_event_pending(struct hvnd_ep_obj *ep_object,
+					 int status)
+{
+
+	struct ib_cq *ibcq;
+	struct hvnd_cq *cq;
+
+	cq = ep_object->cq;
+	ibcq = &ep_object->cq->ibcq;
+
+	if (!cq->monitor)
+		return;
+
+	// call the previous CQ complete
+	if (status == STATUS_PENDING && cq->upcall_pending && ibcq->comp_handler) {
+		ibcq->comp_handler(ibcq, ibcq->cq_context);
+		cq->upcall_pending = false;
+		hvnd_debug("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
+//		printk_ratelimited("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
+	}
+
+	if (status != STATUS_PENDING && ibcq->comp_handler && ibcq->cq_context) {
+		ibcq->comp_handler(ibcq, ibcq->cq_context);
+		hvnd_error("CQ comp_handler called status=%x\n", status);
+	} 
+}
+
+void hvnd_process_cq_event_complete(struct hvnd_ep_obj *ep_object,
+					 int status)
+{
+	struct ib_cq *ibcq;
+	struct hvnd_cq *cq;
+	int ret;
+
+	cq = ep_object->cq;
+	ibcq = &ep_object->cq->ibcq;
+
+	// call hte previous CQ complete
+	if(cq->upcall_pending && ibcq->comp_handler){
+		ibcq->comp_handler(ibcq, ibcq->cq_context);
+		cq->upcall_pending = false;
+		hvnd_debug("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
+//		printk_ratelimited("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
+	}
+
+	cq->upcall_pending = true;
+	if (!ep_add_work_pending(ep_object))
+		return;
+
+	ret = hvnd_notify_cq(ep_object->nd_dev,
+			ep_object->cq,
+			ND_CQ_NOTIFY_ANY,
+    			(u64)ep_object);
+
+	if (ret) {
+		ep_del_work_pending(ep_object);
+//		hvnd_manage_io_state(ep_object, true);
+		hvnd_error("hvnd_notify_cq failed ret=%d\n", ret);
+	}
+
+	if ((status != 0) && (status != STATUS_CANCELLED)) {
+		if (ibcq->event_handler) {
+			struct ib_event event;
+			event.device = ibcq->device;
+			event.event = IB_EVENT_CQ_ERR;
+			event.element.cq = ibcq;
+			ibcq->event_handler(&event, ibcq->cq_context);
+
+			hvnd_warn("CQ event_handler called status=%x\n", status);
+		}
+	}
+}
+
+int init_cm_event(struct hvnd_ep_obj *ep_object, struct iw_cm_event *cm_event,
+		  int event)
+{
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event->local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event->remote_addr;
+	struct nd_read_limits rd_limits;
+	union nd_sockaddr_inet local_addr;
+	union nd_sockaddr_inet remote_addr;
+	int ret;
+
+	/*
+	 * Now get the local address.
+	 */
+	ret = hvnd_connector_get_local_addr(ep_object->nd_dev,
+					    ep_object->uctx,
+					    ep_object->ep_handle,
+					    &local_addr);
+
+	if (ret) {
+		hvnd_error("Connector get addr failed; ret: %d\n", ret);
+		return ret;
+	}
+	/*
+	 * Now get the remote address.
+	 */
+	ret = hvnd_connector_get_peer_addr(ep_object->nd_dev,
+					   ep_object->uctx,
+					   ep_object->ep_handle,
+					   &remote_addr);
+
+	if (ret) {
+		hvnd_error("Connector get peer addr failed; ret: %d\n", ret);
+		return ret;
+	}
+
+	/*
+	 * Get other connection parameters.
+	 */
+
+	ret = hvnd_connector_get_rd_limits(ep_object->nd_dev,
+					   ep_object->uctx,
+					   ep_object->ep_handle,
+					   &rd_limits);
+
+	if (ret) {
+		hvnd_error("Connector rd limits failed; ret: %d\n", ret);
+		return ret;
+	}
+	
+	/*
+	 * XXXKYS: Luke: What about the length of the priv data?
+	 */
+	ret = hvnd_connector_get_priv_data(ep_object->nd_dev,
+					   ep_object->uctx,
+					   ep_object->ep_handle,
+					   ep_object->priv_data);
+
+	if (ret) {
+		hvnd_error("Connector get priv data failed; ret: %d\n", ret);
+		return ret;
+	}
+	/*
+	 * Initialize CM structure.
+	 */
+	laddr->sin_addr.s_addr = local_addr.ipv4.sin_addr.s_addr;
+	hvnd_debug("Local addr is %d\n", laddr->sin_addr.s_addr);
+	laddr->sin_port = local_addr.ipv4.sin_port;
+	laddr->sin_family = AF_INET;
+
+	raddr->sin_addr.s_addr = remote_addr.ipv4.sin_addr.s_addr;
+	hvnd_debug("Remote addr is %d\n", raddr->sin_addr.s_addr);
+	raddr->sin_port = remote_addr.ipv4.sin_port;
+	raddr->sin_family = AF_INET;
+
+	cm_event->private_data_len = MAX_PRIVATE_DATA_LEN; //KYS; LUke: is it always 148 bytes?
+	cm_event->private_data = ep_object->priv_data;
+
+	cm_event->ird = rd_limits.inbound;
+	cm_event->ord = rd_limits.outbound;
+	cm_event->event = event;
+
+	ep_object->ird = cm_event->ird;
+	ep_object->ord = cm_event->ord;
+
+	return 0;
+}
+
+static void hvnd_refuse_connection(struct hvnd_ep_obj *connector, int status)
+{
+	struct iw_cm_event cm_event;
+
+	memset(&cm_event, 0, sizeof(cm_event));
+
+	cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
+	cm_event.status = status;
+
+	hvnd_debug("returning status %d on connector %p\n", status, connector);
+
+	if (connector->cm_id && connector->cm_id->event_handler) {
+		connector->cm_id->event_handler(connector->cm_id, &cm_event);
+		connector->cm_id->rem_ref(connector->cm_id);
+		connector->cm_state = hvnd_cm_connect_reply_refused;
+	}
+}
+
+void hvnd_process_events(struct work_struct *work)
+{
+	struct hvnd_work *wrk; 
+	struct nd_read_limits rd_limits;
+	struct hvnd_ep_obj *ep_object;
+	struct hvnd_ep_obj *parent;
+	struct iw_cm_event cm_event;
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event.local_addr;
+	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event.remote_addr;
+	struct ndv_packet_hdr_control_1 *ctrl_hdr;
+	union nd_sockaddr_inet local_addr;
+	union nd_sockaddr_inet remote_addr;
+	struct pkt_nd_get_connection_listener *connection_pkt;
+	struct iw_cm_id *cm_id = NULL;
+	int status;
+	int ioctl;
+	int ret;
+	char priv_data[MAX_PRIVATE_DATA_LEN];
+	enum ibv_qp_state new_qp_state;
+	struct incoming_pkt *incoming_pkt;
+	unsigned long flags;
+
+	memset(&cm_event, 0, sizeof(cm_event));
+	memset(&priv_data, 0, MAX_PRIVATE_DATA_LEN);
+
+
+	wrk = container_of(work, struct hvnd_work, work);
+
+	/*
+	 * Now call into the connection manager.
+	 */
+	ep_object = (struct hvnd_ep_obj *)wrk->callback_arg;
+	parent = ep_object->parent;
+
+process_next:
+	incoming_pkt = NULL;
+	spin_lock_irqsave(&ep_object->incoming_pkt_list_lock, flags);
+	if (!list_empty(&ep_object->incoming_pkt_list)) {
+		incoming_pkt = list_first_entry(&ep_object->incoming_pkt_list, struct incoming_pkt, list_entry);
+		list_del(&incoming_pkt->list_entry);
+	}
+	spin_unlock_irqrestore(&ep_object->incoming_pkt_list_lock, flags);
+	if (incoming_pkt == NULL)
+		return;
+
+	ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt->pkt;
+	status = ctrl_hdr->io_status;
+	ioctl = ctrl_hdr->io_cntrl_code;
+
+	hvnd_debug("Process Events IOCTL is: %s; iostatus failure: %x in work queue\n", hvnd_get_op_name(ioctl), status);
+	
+	if (status != 0) {
+		bool log_error = true;
+
+		if (ioctl == IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT && status == STATUS_DISCONNECTED) // expected
+			log_error = false;
+
+		if (log_error)
+			hvnd_warn("Process Events IOCTL is: %s; iostatus failure: %x\n", hvnd_get_op_name(ioctl), status);
+	}
+
+	cm_event.status = status;
+
+	switch (ep_object->type) {
+	case ND_CONNECTOR:
+		switch (ioctl) {
+		case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST:
+
+			if (ep_object->parent != NULL) {
+
+				// Do nothing with this connection request if listener is stopping
+				if (!ep_add_work_pending(ep_object->parent))
+					break;
+
+				cm_id = ep_object->parent->cm_id; //Listener
+			}
+
+			connection_pkt = (struct pkt_nd_get_connection_listener *) ctrl_hdr;
+
+			if ((status == 0) || (status == STATUS_CANCELLED)) {
+				hvnd_get_incoming_connections(ep_object->parent,
+				 	ep_object->parent->nd_dev, ep_object->uctx);
+			}
+
+			if (status)
+				goto get_connection_request_done;
+
+			/*
+			 * Now get the local address.
+	 		 */
+			ret = hvnd_connector_get_local_addr(ep_object->nd_dev,
+						     ep_object->uctx,
+						     ep_object->ep_handle,
+						     &local_addr);
+
+			if (ret) {
+				hvnd_error("Connector get addr failed; ret: %d\n", ret);
+				goto get_connection_request_done;
+			}
+			/*
+			 * Now get the remote address.
+			 */
+			ret = hvnd_connector_get_peer_addr(ep_object->nd_dev,
+						     ep_object->uctx,
+						     ep_object->ep_handle,
+						     &remote_addr);
+
+			if (ret) {
+				hvnd_error("Connector get peer addr failed; ret: %d\n", ret);
+				goto get_connection_request_done;
+			}
+			/*
+			 * Get other connection parameters.
+			 */
+
+			ret = hvnd_connector_get_rd_limits(ep_object->nd_dev,
+							   ep_object->uctx,
+							   ep_object->ep_handle,
+							   &rd_limits);
+
+			if (ret) {
+				hvnd_error("Connector rd limits failed; ret: %d\n", ret);
+				goto get_connection_request_done;
+			}
+	
+			/*
+			 * XXXKYS: Luke: What about the length of the priv data?
+			 */
+			ret = hvnd_connector_get_priv_data(ep_object->nd_dev,
+							   ep_object->uctx,
+							   ep_object->ep_handle,
+							   ep_object->priv_data);
+
+			if (ret) {
+				hvnd_error("Connector get priv data failed; ret: %d\n", ret);
+				goto get_connection_request_done;
+			}
+
+			cm_event.event = IW_CM_EVENT_CONNECT_REQUEST;
+			cm_event.provider_data = (void*)ep_object;
+
+			laddr->sin_addr.s_addr = local_addr.ipv4.sin_addr.s_addr;
+			hvnd_debug("Local addr is %d\n", laddr->sin_addr.s_addr);
+			laddr->sin_port = local_addr.ipv4.sin_port;
+			laddr->sin_family = AF_INET;
+
+			raddr->sin_addr.s_addr = remote_addr.ipv4.sin_addr.s_addr;
+			hvnd_debug("Remote addr is %d\n", raddr->sin_addr.s_addr);
+			raddr->sin_port = remote_addr.ipv4.sin_port;
+			raddr->sin_family = AF_INET;
+
+			cm_event.private_data_len = MAX_PRIVATE_DATA_LEN; //KYS; LUke: is it always 148 bytes?
+			cm_event.private_data = ep_object->priv_data;
+
+			cm_event.ird = rd_limits.inbound;
+			cm_event.ord = rd_limits.outbound;
+
+			ep_object->ird = cm_event.ird;
+			ep_object->ord = cm_event.ord;
+
+
+			if ((cm_id != NULL) && cm_id->event_handler) {
+				cm_id->event_handler(cm_id, &cm_event);
+				ep_object->cm_state = hvnd_cm_connect_request_sent;
+			}
+
+get_connection_request_done:
+			if (ep_object->parent != NULL) {
+
+				ep_del_work_pending(ep_object->parent);
+			}
+			break;
+
+		case IOCTL_ND_CONNECTOR_CONNECT:
+
+			cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
+			if(status == STATUS_TIMEOUT && ep_object->connector_connect_retry<3) { //TIMEOUT retry
+
+				if (!ep_add_work_pending(ep_object)) 
+					goto refuse_connection;
+
+				hvnd_warn("Connector connect timed out, reconnecting... retry count: %d\n", ep_object->connector_connect_retry);
+				ep_object->connector_connect_retry++;
+					ret = hvnd_send_ioctl_pkt(ep_object->nd_dev, &ep_object->connector_connect_pkt.hdr,
+						sizeof(ep_object->connector_connect_pkt),
+		      	    			(u64)&ep_object->connector_connect_pkt);
+
+				if (ret) {
+					hvnd_error("Connector on time out failed: %d\n", ret);
+					ep_del_work_pending(ep_object);
+					goto refuse_connection;
+				}
+				break;
+			}
+
+refuse_connection:
+			if (status) {
+				cm_event.status = -ECONNREFUSED;
+				if (status == STATUS_TIMEOUT)
+					cm_event.status = -ETIMEDOUT;
+
+				hvnd_refuse_connection(ep_object, cm_event.status);
+				break;
+			}
+
+			hvnd_debug("ACTIVE Connection ACCEPTED\n");
+			ret = init_cm_event(ep_object, &cm_event, IW_CM_EVENT_CONNECT_REPLY);
+			if (ret) {
+				hvnd_error("init_cm_event failed ret=%d\n", ret);
+				goto process_done;
+			}
+
+			ret = hvnd_connector_complete_connect(ep_object->nd_dev,
+						ep_object->uctx,
+						ep_object->ep_handle,
+						&new_qp_state);
+			if (ret) {
+				hvnd_error("connector_complete failed\n");
+				goto process_done;
+			}
+
+			cm_event.provider_data = (void*)ep_object;
+
+			if ((ep_object->cm_id) &&
+	    			(ep_object->cm_id->event_handler)) {
+				ep_object->cm_id->event_handler(ep_object->cm_id, &cm_event);
+				ep_object->cm_state = hvnd_cm_connect_reply_sent;
+			}
+			/*
+		 	 * Rquest notification if the other end
+		 	 * were to disconnect.
+		 	 */
+			if (!ep_add_work_pending(ep_object))
+				goto process_done;
+
+			ret = hvnd_connector_notify_disconnect(ep_object->nd_dev,
+							   ep_object->uctx,
+							   ep_object->ep_handle,
+							   ep_object);
+
+			if (ret) {
+				ep_del_work_pending(ep_object);
+				hvnd_error("Connector notify disconnect failed; ret: %d\n", ret);
+			}
+
+			break;
+
+		case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT:
+			hvnd_process_notify_disconnect(ep_object, status);
+			break;
+
+			
+		default:
+			hvnd_error("Unknown Connector IOCTL\n");
+			break;
+		}
+		break;
+	default:
+		hvnd_error("Unknown endpoint object\n");
+		break;
+	}
+process_done:
+	kfree(incoming_pkt);
+	ep_del_work_pending(ep_object);
+
+	goto process_next;
+}
+
+
+static struct hvnd_ep_obj *hvnd_setup_ep(struct iw_cm_id *cm_id, int ep_type,
+					struct hvnd_dev *nd_dev,
+					struct hvnd_ucontext *uctx) 
+{
+	struct hvnd_ep_obj *ep_object;
+	int ret;
+
+	ep_object = kzalloc(sizeof(struct hvnd_ep_obj), GFP_KERNEL);
+
+	if (!ep_object)
+		return NULL;
+
+	ret = hvnd_init_ep(ep_object, cm_id, ep_type, nd_dev, uctx);
+
+	if (ret) {
+		hvnd_error("hvnd_init_ep failed ret=%d\n", ret);
+		kfree(ep_object);
+		return NULL;
+	}
+		
+	return ep_object;
+}
+
+/* 
+return value:
+	true: I/O state is stopped, we should not do upcall
+	flase: I/O state is running and normal
+
+static bool hvnd_manage_io_state(struct hvnd_ep_obj *ep, bool failure)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&ep->ep_lk, flags);
+	if (ep->to_be_destroyed) {
+		hvnd_warn("ep being destroyed\n");
+		if (ep->io_outstanding) {
+			hvnd_warn("ep being destroyed i/O pending waking up on %p\n", &ep->block_event);
+			complete(&ep->block_event);
+			ep->io_outstanding = false;
+		}
+		spin_unlock_irqrestore(&ep->ep_lk, flags);
+		return true;
+	}
+	if (!failure)
+		ep->io_outstanding = true;
+	spin_unlock_irqrestore(&ep->ep_lk, flags);
+	return false;
+}
+*/
+
+static int hvnd_get_incoming_connections(struct hvnd_ep_obj *listener,
+					 struct hvnd_dev *nd_dev,
+					 struct hvnd_ucontext *uctx)
+{
+	struct hvnd_ep_obj *connector;
+	u64 connector_handle;
+	int ret;
+
+	/*
+	 * First handle the protocol for
+	 * destruction - outstanding I/O.
+	 */
+
+//	if (hvnd_manage_io_state(listener, false))
+//		return 0;
+	/*
+	 * Create a connector.
+	 */
+	connector = hvnd_setup_ep(listener->cm_id, ND_CONNECTOR, nd_dev, uctx);
+	if (!connector) {
+		hvnd_error("hvnd_setup_ep failed\n");
+		ret = -ENOMEM;
+		goto con_alloc_err;
+	}
+  
+	ret = hvnd_cr_connector(nd_dev, uctx,
+				&connector_handle);
+	if (ret) {
+		hvnd_error("hvnd_cr_connector failed ret=%d\n", ret);
+		goto con_cr_err;
+	}
+
+	/*
+	 * Now get a connection if one is pending.
+	 */
+	connector->ep_handle = connector_handle;
+	connector->parent = listener;
+
+	if (!ep_add_work_pending(connector))
+		goto get_connection_err;
+
+	ret = hvnd_get_connection_listener(nd_dev, uctx,
+					listener->ep_handle,
+					connector_handle,
+					(u64)connector); 
+
+	if (ret) {
+		hvnd_debug("listener_get_connection failed\n");
+		ep_del_work_pending(connector);
+		goto get_connection_err;
+	}
+
+	hvnd_acquire_uctx_ref(uctx);
+	listener->outstanding_handle = connector_handle;
+	listener->outstanding_ep = connector;
+	hvnd_debug("outstanding handle is %p\n", (void *)connector_handle);
+	return 0;
+
+get_connection_err:
+	hvnd_free_handle(nd_dev, uctx,
+			connector_handle,
+			IOCTL_ND_CONNECTOR_FREE);
+
+con_cr_err:
+	kfree(connector);
+con_alloc_err:
+//	hvnd_manage_io_state(listener, true);
+	return ret;
+}
+
+static int hvnd_create_listen(struct iw_cm_id *cm_id, int backlog)
+{
+	int ret = 0;
+	struct hvnd_dev *nd_dev;
+	struct hvnd_ucontext *uctx; 
+	struct hvnd_ep_obj *ep_object;
+	union nd_sockaddr_inet addr;
+	union nd_sockaddr_inet local_addr;
+	u64 listener_handle;	
+	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
+	union nd_sockaddr_inet og_addr;
+
+
+	nd_dev = to_nd_dev(cm_id->device);
+	uctx = get_uctx(nd_dev, current_pid());
+	hvnd_debug("uctx is %p; pid is %d\n", uctx, current_pid());
+
+	if (cm_id->local_addr.ss_family != AF_INET) {
+		hvnd_error("cm_id->local_addr.ss_family =%d not AF_INET\n", cm_id->local_addr.ss_family);
+		return -ENOSYS;
+	}
+
+	/*
+	 * If the local address is LOOPBACK or INADDR_ANY, get an an address
+	 * to bind the listener. For now, just get the first address
+	 * available.
+	 */
+
+	if (IN_LOOPBACK(ntohl(laddr->sin_addr.s_addr)) ||
+		(laddr->sin_addr.s_addr == INADDR_ANY)) {
+
+		hvnd_debug("need to get an address\n");
+		ret = hvnd_get_outgoing_rdma_addr(nd_dev, uctx, &og_addr);
+
+		if (ret) {
+			hvnd_error("failed to get the og address\n");
+			return ret;
+		}
+
+		laddr->sin_addr.s_addr = og_addr.ipv4.sin_addr.s_addr;
+	}
+
+	cm_id->add_ref(cm_id);
+
+	ep_object = hvnd_setup_ep(cm_id, ND_LISTENER, nd_dev, uctx);
+
+	if (!ep_object) {
+		hvnd_error("hvnd_setup_ep returned NULL\n");
+		goto alloc_err;
+	}
+
+	ret = hvnd_cr_listener(nd_dev, uctx,
+				&listener_handle);
+	if (ret) {
+		hvnd_error("hvnd_cr_listener failed ret=%d\n", ret);
+		goto cr_err;
+	}
+
+	ep_object->ep_handle = listener_handle;
+
+	cm_id->provider_data = ep_object;
+
+	/*
+	 * Now bind the listener.
+	 * IPV4 support only.
+	 */
+	memcpy(&addr.ipv4, laddr, sizeof(struct sockaddr_in));
+	
+	ret = hvnd_bind_listener(nd_dev, uctx,
+				listener_handle,
+				&addr);
+	if (ret) {
+		hvnd_error("hvnd_bind_listener failed ret=%d\n", ret);
+		goto bind_err;
+	}
+ 	
+	/*
+	 * Now get the local address.
+	 */
+	ret = hvnd_get_addr_listener(nd_dev, uctx,
+					listener_handle,
+					&local_addr);
+	if (ret) {
+		hvnd_error("hvnd_get_addr_listener failed ret=%d\n", ret);
+		goto bind_err;
+	}
+
+	/*
+	 * Now put the listener in the listen mode.
+	 */
+
+	ret = hvnd_listen_listener(nd_dev, uctx,
+				listener_handle,
+				backlog);
+
+	if (ret) {
+		hvnd_error("hvnd_listen_listener failed ret=%d\n", ret);
+		goto bind_err;
+	}
+
+
+	/*
+	 * Now get a pending connection if one is pending.
+	 */
+	ret = hvnd_get_incoming_connections(ep_object, nd_dev, uctx);
+	if (ret) {
+		hvnd_error("hvnd_get_incoming_connections failed ret=%d\n", ret);
+		goto bind_err;
+	}
+
+	hvnd_acquire_uctx_ref(uctx);
+	hvnd_debug("cm_id=%p\n", cm_id);
+	return 0;
+
+bind_err:
+	hvnd_free_handle(nd_dev, uctx,
+			listener_handle,
+			IOCTL_ND_LISTENER_FREE);
+cr_err:
+	kfree(ep_object);
+alloc_err:
+	cm_id->provider_data = NULL;
+	cm_id->rem_ref(cm_id);
+	return ret;
+}
+
+static int hvnd_destroy_listen(struct iw_cm_id *cm_id)
+{
+	struct hvnd_dev *nd_dev;
+	struct hvnd_ucontext *uctx; 
+	struct hvnd_ep_obj *ep_object;
+
+	nd_dev = to_nd_dev(cm_id->device);
+
+	ep_object = (struct hvnd_ep_obj *)cm_id->provider_data;
+
+	hvnd_debug("uctx is %p\n", ep_object->uctx);
+	hvnd_debug("Destroying Listener cm_id=%p\n", cm_id);
+	uctx = ep_object->uctx;
+
+	// make sure there is nothing in progress on this ep
+	ep_stop(ep_object);
+
+	hvnd_free_handle(nd_dev, uctx,
+			ep_object->ep_handle,
+			IOCTL_ND_LISTENER_FREE);
+
+	/*
+	 * We may have an ouststanding connector for
+	 * incoming connection requests; clean it up.
+	 */
+
+	if (ep_object->outstanding_handle != 0) {
+
+		// make sure there is nothing in progress on this ep
+		ep_stop(ep_object->outstanding_ep);
+
+		hvnd_free_handle(nd_dev, uctx,
+				ep_object->outstanding_handle,
+				IOCTL_ND_CONNECTOR_FREE);
+
+
+		hvnd_drop_uctx_ref(nd_dev, uctx);
+		hvnd_destroy_ep(ep_object->outstanding_ep);
+	}
+
+	/*
+	 * Now everything should have stopped
+	 */
+
+	cm_id->rem_ref(cm_id);
+	hvnd_destroy_ep(ep_object);
+	cm_id->provider_data = NULL;
+	hvnd_drop_uctx_ref(nd_dev, uctx);
+
+	hvnd_debug("cm_id=%p\n", cm_id);
+	return 0;
+}
+
+static void hvnd_qp_add_ref(struct ib_qp *ibqp)
+{
+	struct hvnd_qp *qp = to_nd_qp(ibqp);
+	atomic_inc(&qp->refcnt);
+}
+
+void hvnd_qp_rem_ref(struct ib_qp *ibqp)
+{
+	struct hvnd_qp *qp = to_nd_qp(ibqp);
+	if (atomic_dec_and_test(&qp->refcnt))
+		wake_up(&qp->wait);
+}
+
+static DEVICE_ATTR(hw_rev, S_IRUGO, hvnd_show_rev, NULL);
+static DEVICE_ATTR(fw_ver, S_IRUGO, hvnd_show_fw_ver, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, hvnd_show_hca, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, hvnd_show_board, NULL);
+
+static struct device_attribute *hvnd_class_attributes[] = {
+	&dev_attr_hw_rev,
+	&dev_attr_fw_ver,
+	&dev_attr_hca_type,
+	&dev_attr_board_id,
+};
+
+int hvnd_register_device(struct hvnd_dev *dev, char *ip_addr, char *mac_addr)
+{
+	int ret;
+	int i;
+
+	dev->ibdev.owner = THIS_MODULE;
+	dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
+	dev->ibdev.local_dma_lkey = 0;
+	dev->ibdev.uverbs_cmd_mask =
+	    (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
+	    (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
+	    (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
+	    (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
+	    (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
+	    (1ull << IB_USER_VERBS_CMD_REG_MR) |
+	    (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
+	    (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
+	    (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
+	    (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
+	    (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
+	    (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
+	    (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
+	    (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
+	    (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
+	    (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
+	    (1ull << IB_USER_VERBS_CMD_POST_SEND) |
+	    (1ull << IB_USER_VERBS_CMD_POST_RECV);
+	dev->ibdev.node_type = RDMA_NODE_RNIC;
+	memcpy(dev->ibdev.node_desc, HVND_NODE_DESC, sizeof(HVND_NODE_DESC));
+	memcpy(&dev->ibdev.node_guid, mac_addr, 6);
+	dev->ibdev.phys_port_cnt = 1; //dev->nports;
+	dev->ibdev.num_comp_vectors = 1;
+	dev->ibdev.dma_device = &(dev->hvdev->device);
+	dev->ibdev.query_device = hvnd_query_device;
+	dev->ibdev.query_port = hvnd_query_port;
+	dev->ibdev.get_link_layer = hvnd_get_link_layer;
+	dev->ibdev.query_pkey = hvnd_query_pkey;
+	dev->ibdev.query_gid = hvnd_query_gid;
+	dev->ibdev.alloc_ucontext = hvnd_alloc_ucontext;
+	dev->ibdev.dealloc_ucontext = hvnd_dealloc_ucontext;
+	dev->ibdev.mmap = hvnd_mmap;
+	dev->ibdev.alloc_pd = hvnd_allocate_pd;
+	dev->ibdev.dealloc_pd = hvnd_deallocate_pd;
+	dev->ibdev.create_ah = hvnd_ah_create;
+	dev->ibdev.destroy_ah = hvnd_ah_destroy;
+	dev->ibdev.create_qp = hvnd_ib_create_qp;
+	dev->ibdev.modify_qp = hvnd_ib_modify_qp;
+	dev->ibdev.query_qp = hvnd_ib_query_qp;
+	dev->ibdev.destroy_qp = hvnd_destroy_qp;
+	dev->ibdev.create_cq = hvnd_ib_create_cq;
+	dev->ibdev.destroy_cq = hvnd_ib_destroy_cq;
+	dev->ibdev.resize_cq = hvnd_resize_cq;
+	dev->ibdev.poll_cq = hvnd_poll_cq;
+	dev->ibdev.get_dma_mr = hvnd_get_dma_mr;
+	dev->ibdev.reg_user_mr = hvnd_reg_user_mr;
+	dev->ibdev.dereg_mr = hvnd_dereg_mr;
+	dev->ibdev.alloc_mw = hvnd_alloc_mw;
+	dev->ibdev.dealloc_mw = hvnd_dealloc_mw;
+	dev->ibdev.attach_mcast = hvnd_multicast_attach;
+	dev->ibdev.detach_mcast = hvnd_multicast_detach;
+	dev->ibdev.process_mad = hvnd_process_mad;
+	dev->ibdev.req_notify_cq = hvnd_arm_cq;
+	dev->ibdev.post_send = hvnd_post_send;
+	dev->ibdev.post_recv = hvnd_post_receive;
+	dev->ibdev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
+
+	dev->ibdev.get_port_immutable = hvnd_get_port_immutable;
+
+	//DMA ops for mapping all possible addresses
+	dev->ibdev.dma_device->archdata.dma_ops = &vmbus_dma_ops;
+
+	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
+	if (!dev->ibdev.iwcm)
+		return -ENOMEM;
+
+	dev->ibdev.iwcm->connect = hvnd_connect;
+	dev->ibdev.iwcm->accept = hvnd_accept_cr;
+	dev->ibdev.iwcm->reject = hvnd_reject_cr;
+	dev->ibdev.iwcm->create_listen = hvnd_create_listen;
+	dev->ibdev.iwcm->destroy_listen = hvnd_destroy_listen;
+	dev->ibdev.iwcm->add_ref = hvnd_qp_add_ref;
+	dev->ibdev.iwcm->rem_ref = hvnd_qp_rem_ref;
+	dev->ibdev.iwcm->get_qp = hvnd_get_qp;
+
+	strlcpy(dev->ibdev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
+	ret = ib_register_device(&dev->ibdev, NULL);
+	if (ret) {
+		hvnd_error("ib_register_device failed ret=%d\n", ret);
+		goto bail1;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(hvnd_class_attributes); ++i) {
+		ret = device_create_file(&dev->ibdev.dev,
+					 hvnd_class_attributes[i]);
+		if (ret) {
+			hvnd_error("device_create_file failed ret=%d\n", ret);
+			goto bail2;
+		}
+	}
+
+	dev->ib_active = true;
+	
+	return 0;
+bail2:
+	ib_unregister_device(&dev->ibdev);
+bail1:
+	kfree(dev->ibdev.iwcm);
+	return ret;
+}
+
+void hvnd_unregister_device(struct hvnd_dev *dev)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(hvnd_class_attributes); ++i)
+		device_remove_file(&dev->ibdev.dev,
+				   hvnd_class_attributes[i]);
+	ib_unregister_device(&dev->ibdev);
+	kfree(dev->ibdev.iwcm);
+	ib_dealloc_device((struct ib_device *)dev);
+	return;
+}
+
+static int hvnd_try_bind_nic(unsigned char *mac, __be32 ip)
+{
+	int ret;
+	struct hvnd_dev *nd_dev = g_nd_dev;
+
+	mutex_lock(&nd_dev->bind_mutex);
+	if (nd_dev->bind_complete) {
+		mutex_unlock(&nd_dev->bind_mutex);
+		return 1;
+	}
+
+	memcpy(nd_dev->mac_addr, mac, 6);
+	*(__be32*)(nd_dev->ip_addr) = ip;
+
+	/*
+	* Bind the NIC.
+	*/
+	hvnd_info("trying to bind to IP %pI4 MAC %pM\n", nd_dev->ip_addr, nd_dev->mac_addr);
+	ret = hvnd_bind_nic(nd_dev, false, nd_dev->ip_addr, nd_dev->mac_addr);
+	if (ret || nd_dev->bind_pkt.pkt_hdr.status) {
+		mutex_unlock(&nd_dev->bind_mutex);
+		return 1;
+	}
+
+	/* if we reach here, this means bind_nic is a success */
+	hvnd_error("successfully bound to IP %pI4 MAC %pM\n", nd_dev->ip_addr, nd_dev->mac_addr);
+	complete(&nd_dev->addr_set);
+	nd_dev->bind_complete=1;
+	mutex_unlock(&nd_dev->bind_mutex);
+
+	ret = hvnd_register_device(nd_dev, nd_dev->ip_addr, nd_dev->mac_addr);
+
+	if (!ret)
+		return 0;
+
+	hvnd_error("hvnd_register_device failed ret=%d\n", ret);
+
+	/* roll back all allocated resources on error */
+	iounmap(nd_dev->mmio_virt);
+	release_resource(&nd_dev->mmio_resource);
+
+	vmbus_close(nd_dev->hvdev->channel);
+	ib_dealloc_device((struct ib_device *)nd_dev);
+
+	return 1;
+}
+
+static void hvnd_inetaddr_event_up(unsigned long event, struct in_ifaddr *ifa)
+{
+	hvnd_try_bind_nic(ifa->ifa_dev->dev->dev_addr, ifa->ifa_address);
+}
+
+static int hvnd_inetaddr_event(struct notifier_block *notifier, unsigned long event, void *ptr)
+{
+	struct in_ifaddr *ifa = ptr;
+	switch(event) {
+	case NETDEV_UP:
+		hvnd_inetaddr_event_up(event, ifa);
+		break;
+	default:
+		hvnd_debug("Received inetaddr event %lu\n", event);
+	}
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block hvnd_inetaddr_notifier = {
+	.notifier_call = hvnd_inetaddr_event,
+};
+
+static int start_bind_nic(void)
+{
+	struct net_device *dev;
+	struct in_device *idev;
+	struct in_ifaddr *ifa;
+
+	register_inetaddr_notifier(&hvnd_inetaddr_notifier);
+
+	rtnl_lock();
+	for_each_netdev(&init_net, dev) {
+		idev = in_dev_get(dev);
+		if (!idev)
+			continue;
+		for (ifa = (idev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next) {
+			hvnd_try_bind_nic(dev->dev_addr, ifa->ifa_address);
+		}
+	}
+	rtnl_unlock();
+
+	return 0;
+}
+
+static int hvnd_probe(struct hv_device *dev,
+		      const struct hv_vmbus_device_id *dev_id)
+{
+	struct hvnd_dev *nd_dev;
+	int ret = 0;
+
+	hvnd_debug("hvnd starting\n");
+
+	nd_dev = (struct hvnd_dev *)ib_alloc_device(sizeof(struct hvnd_dev));
+	if (!nd_dev) {
+		ret = -ENOMEM;
+		goto err_out0;
+	}
+
+	nd_dev->hvdev = dev;
+	/*
+	 * We are going to masquerade as MLX4 device;
+	 * Set the vendor and device ID accordingly.
+	 */
+	dev->vendor_id = 0x15b3; //Mellanox
+	dev->device_id = 0x1003; //Mellanox HCA
+	INIT_LIST_HEAD(&nd_dev->listentry);
+	spin_lock_init(&nd_dev->uctxt_lk);
+	nd_dev->ib_active = false;
+
+	/*
+	 * Initialize the state for the id table.
+	 */
+	spin_lock_init(&nd_dev->id_lock);
+	idr_init(&nd_dev->cqidr);
+	idr_init(&nd_dev->qpidr);
+	idr_init(&nd_dev->mmidr);
+	idr_init(&nd_dev->irpidr);
+	idr_init(&nd_dev->uctxidr);
+
+	atomic_set(&nd_dev->open_cnt, 0);
+
+	sema_init(&nd_dev->query_pkt_sem, 1);
+	
+	ret = vmbus_open(dev->channel, HVND_RING_SZ, HVND_RING_SZ, NULL, 0,
+			 hvnd_callback, dev);
+
+	if (ret) {
+		hvnd_error("vmbus_open failed ret=%d\n", ret);
+		goto err_out1;
+	}
+
+	hv_set_drvdata(dev, nd_dev);
+
+	ret = hvnd_negotiate_version(nd_dev);
+
+	if (ret) {
+		hvnd_error("hvnd_negotiate_version failed ret=%d\n", ret);
+		goto err_out2;
+	}
+
+	/*
+	 * Register resources with the host.
+	 */
+	ret = hvnd_init_resources(nd_dev);
+	if (ret) {
+		hvnd_error("hvnd_init_resources failed ret=%d\n", ret);
+		goto err_out2;
+	}
+
+	/*
+	 * Try to bind every NIC to ND channel,
+	 * ND host will only return success for the correct one
+	 */
+	nd_dev->bind_complete = 0;
+	mutex_init(&nd_dev->bind_mutex);
+	init_completion(&nd_dev->addr_set);
+
+	g_nd_dev = nd_dev;
+	start_bind_nic();
+
+	return 0;
+
+err_out2:
+	vmbus_close(dev->channel);
+
+err_out1:
+	ib_dealloc_device((struct ib_device *)nd_dev);
+
+err_out0:
+	return ret;
+}
+
+static int hvnd_remove(struct hv_device *dev)
+{
+	struct hvnd_dev *nd_dev = hv_get_drvdata(dev);
+
+	unregister_inetaddr_notifier(&hvnd_inetaddr_notifier);
+	hvnd_bind_nic(nd_dev, true, nd_dev->ip_addr, nd_dev->mac_addr);
+	hvnd_unregister_device(nd_dev);
+	vmbus_close(dev->channel);
+	iounmap(nd_dev->mmio_virt);
+	release_resource(&nd_dev->mmio_resource);
+	return 0;
+}
+
+static const struct hv_vmbus_device_id id_table[] = {
+	/* VMBUS RDMA class guid */
+	/* 8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501 */
+	{ HV_ND_GUID, },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(vmbus, id_table);
+
+static  struct hv_driver hvnd_drv = {
+	.name = "hv_guest_rdma",
+	.id_table = id_table,
+	.probe =  hvnd_probe,
+	.remove =  hvnd_remove,
+};
+
+
+static int __init init_hvnd_drv(void)
+{
+
+	pr_info("Registered HyperV networkDirect Driver\n");
+	hvnd_addr_init();
+	return(vmbus_driver_register(&hvnd_drv));
+	
+}
+
+static void exit_hvnd_drv(void)
+{
+	pr_info("De-Registered HyperV networkDirect Driver\n");
+	hvnd_addr_deinit();
+	vmbus_driver_unregister(&hvnd_drv);
+}
+
+
+module_init(init_hvnd_drv);
+module_exit(exit_hvnd_drv);
+
+MODULE_DESCRIPTION("Hyper-V NetworkDirect Driver");
+MODULE_LICENSE("GPL");

drivers/infiniband/hw/vmbus-rdma/user.h

+/*
+ * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2007, 2008 Mellanox Technologies. 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.
+ */
+
+#ifndef MLX4_IB_USER_H
+#define MLX4_IB_USER_H
+
+#include <linux/types.h>
+
+/*
+ * Increment this value if any changes that break userspace ABI
+ * compatibility are made.
+ */
+
+#define MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION	3
+#define MLX4_IB_UVERBS_ABI_VERSION		4
+
+/*
+ * Make sure that all structs defined in this file remain laid out so
+ * that they pack the same way on 32-bit and 64-bit architectures (to
+ * avoid incompatibility between 32-bit userspace and 64-bit kernels).
+ * In particular do not use pointer types -- pass pointers in __u64
+ * instead.
+ */
+
+struct mlx4_ib_alloc_ucontext_resp_v3 {
+	__u32	qp_tab_size;
+	__u16	bf_reg_size;
+	__u16	bf_regs_per_page;
+};
+
+struct mlx4_ib_alloc_ucontext_resp {
+	__u32	dev_caps;
+	__u32	qp_tab_size;
+	__u16	bf_reg_size;
+	__u16	bf_regs_per_page;
+	__u32	cqe_size;
+};
+
+struct mlx4_ib_alloc_pd_resp {
+	__u32	pdn;
+	__u32	reserved;
+};
+
+struct mlx4_ib_create_cq {
+	__u64	buf_addr;
+	__u64	db_addr;
+};
+
+struct mlx4_ib_create_cq_resp {
+	__u32	cqn;
+	__u32	reserved;
+};
+
+struct mlx4_ib_resize_cq {
+	__u64	buf_addr;
+};
+
+struct mlx4_ib_create_srq {
+	__u64	buf_addr;
+	__u64	db_addr;
+};
+
+struct mlx4_ib_create_srq_resp {
+	__u32	srqn;
+	__u32	reserved;
+};
+
+struct mlx4_ib_create_qp {
+	__u64	buf_addr;
+	__u64	db_addr;
+	__u8	log_sq_bb_count;
+	__u8	log_sq_stride;
+	__u8	sq_no_prefetch;
+	__u8	reserved[5];
+};
+
+#endif /* MLX4_IB_USER_H */

drivers/infiniband/hw/vmbus-rdma/vmbus_rdma.c

+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ *   K. Y. Srinivasan <kys@microsoft.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * Bug fixes/enhancements: Long Li <longli@microsoft.com>
+ */
+
+#include <linux/completion.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/hyperv.h>
+#include <linux/efi.h>
+#include <linux/slab.h>
+#include <linux/cred.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/scatterlist.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_user_verbs.h>
+#include <asm-generic/delay.h>
+
+#include "vmbus_rdma.h"
+
+/*
+ * We only have a single rdma device on the host;
+ * have a single receive buffer.
+ */
+
+
+static char hvnd_recv_buffer[PAGE_SIZE * 4];
+
+static atomic_t irp_local_hdl;
+
+char *hvnd_get_op_name(int ioctl)
+{
+	switch (ioctl) {
+	case IOCTL_ND_PROVIDER_INIT:
+		return "IOCTL_ND_PROVIDER_INIT\n";
+	case IOCTL_ND_PROVIDER_BIND_FILE:
+		return "IOCTL_ND_PROVIDER_BIND_FILE\n";
+	case IOCTL_ND_ADAPTER_OPEN:
+		return "IOCTL_ND_ADAPTER_OPEN\n";
+
+	case IOCTL_ND_ADAPTER_CLOSE:
+		return "IOCTL_ND_ADAPTER_CLOSE\n";
+
+	case IOCTL_ND_ADAPTER_QUERY: 
+		return "IOCTL_ND_ADAPTER_QUERY\n";
+
+	case IOCTL_ND_PD_CREATE:
+		return "IOCTL_ND_PD_CREATE\n";
+
+	case IOCTL_ND_PD_FREE:
+		return "IOCTL_ND_PD_FREE\n";
+
+	case IOCTL_ND_CQ_CREATE:
+		return "IOCTL_ND_CQ_CREATE\n";
+
+	case IOCTL_ND_CQ_FREE:
+		return "IOCTL_ND_CQ_FREE\n";
+	case IOCTL_ND_CQ_CANCEL_IO:
+		return "IOCTL_ND_CQ_CANCEL_IO\n";
+	case IOCTL_ND_CQ_GET_AFFINITY:
+		return "IOCTL_ND_CQ_GET_AAFINITY\n";
+	case IOCTL_ND_CQ_MODIFY:
+		return "IOCTL_ND_CQ_MODIFY\n";
+
+	case IOCTL_ND_CQ_NOTIFY:
+		return "IOCTL_ND_CQ_NOTIFY\n";
+
+
+	case IOCTL_ND_LISTENER_CREATE: 
+		return "IOCTL_ND_LISTENER_CREATE\n";
+
+	case IOCTL_ND_LISTENER_FREE: 
+		return "IOCTL_ND_LISTENER_FREE\n";
+
+	case IOCTL_ND_QP_FREE: 
+		return "IOCTL_ND_QP_FREE\n";
+
+	case IOCTL_ND_CONNECTOR_CANCEL_IO: 
+		return "IOCTL_ND_CONNECTOR_CANCEL_IO\n";
+
+	case IOCTL_ND_LISTENER_CANCEL_IO: 
+		return "IOCTL_ND_LISTENER_CANCEL_IO\n";
+
+	case IOCTL_ND_LISTENER_BIND: 
+		return "IOCTL_ND_LISTENER_BIND\n";
+
+	case IOCTL_ND_LISTENER_LISTEN: 
+		return "IOCTL_ND_LISTENER_LISTEN\n";
+
+	case IOCTL_ND_LISTENER_GET_ADDRESS: 
+		return "IOCTL_ND_LISTENER_GET_ADDRESS\n";
+
+	case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST: 
+		return "IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST\n";
+
+
+
+	case IOCTL_ND_CONNECTOR_CREATE: 
+		return "IOCTL_ND_CONNECTOR_CREATE\n";
+
+	case IOCTL_ND_CONNECTOR_FREE: 
+		return "IOCTL_ND_CONNECTOR_FREE\n";
+
+	case IOCTL_ND_CONNECTOR_BIND: 
+		return "IOCTL_ND_CONNECTOR_BIND\n";
+
+	case IOCTL_ND_CONNECTOR_CONNECT: //KYS: ALERT: ASYNCH Operation 
+		return "IOCTL_ND_CONNECTOR_CONNECT\n";
+
+	case IOCTL_ND_CONNECTOR_COMPLETE_CONNECT: 
+		return "IOCTL_ND_CONNECTOR_COMPLETE_CONNECT\n";
+
+	case IOCTL_ND_CONNECTOR_ACCEPT: //KYS: ALERT: ASYNCH Operation 
+		return "IOCTL_ND_CONNECTOR_ACCEPT\n";
+
+	case IOCTL_ND_CONNECTOR_REJECT: 
+		return "IOCTL_ND_CONNECTOR_REJECT\n";
+
+	case IOCTL_ND_CONNECTOR_GET_READ_LIMITS: 
+		return "IOCTL_ND_CONNECTOR_GET_READ_LIMITS\n";
+
+	case IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA: 
+		return "IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA\n";
+
+	case IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS: 
+		return "IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS\n";
+
+	case IOCTL_ND_CONNECTOR_GET_ADDRESS: 
+		return "IOCTL_ND_CONNECTOR_GET_ADDRESS\n";
+
+	case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT: //KYS: ALERT: ASYNCH Operation 
+		return "IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT\n";
+
+	case IOCTL_ND_CONNECTOR_DISCONNECT: //KYS: ALERT: ASYNCH Operation 
+		return "IOCTL_ND_CONNECTOR_DISCONNECT\n";
+
+
+
+	case IOCTL_ND_QP_CREATE: 
+		return "IOCTL_ND_QP_CREATE\n";
+
+	case IOCTL_ND_MR_CREATE: 
+		return "IOCTL_ND_MR_CREATE\n";
+
+	case IOCTL_ND_MR_FREE: 
+		return "IOCTL_ND_MR_FREE\n";
+	case IOCTL_ND_MR_REGISTER: 
+		return "IOCTL_ND_MR_REGISTER\n";
+	case IOCTL_ND_MR_DEREGISTER: 
+		return "IOCTL_ND_MR_DEREGISTER\n";
+	case IOCTL_ND_MR_CANCEL_IO: 
+		return "IOCTL_ND_MR_CANCEL_IO\n";
+	case IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST: 
+		return "IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST\n";
+	case IOCTL_ND_QP_FLUSH:
+		return "IOCTL_ND_QP_FLUSH\n";
+
+	default:
+		return "Unknown IOCTL\n";
+	}
+}
+int get_irp_handle(struct hvnd_dev *nd_dev, u32 *local, void *irp_ctx)
+{
+	unsigned int local_handle;
+	int ret;
+
+	local_handle = atomic_inc_return(&irp_local_hdl);
+	*local = local_handle;
+
+	/*
+	 * Now asssociate the local handle with the pointer.
+	 */
+	ret = insert_handle(nd_dev, &nd_dev->irpidr, irp_ctx, local_handle);
+	hvnd_debug("irp_ctx=%p local_handle=%u\n", irp_ctx, local_handle);
+
+	if (ret) {
+		hvnd_error("insert_handle failed ret=%d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+void put_irp_handle(struct hvnd_dev *nd_dev, u32 irp)
+{
+	remove_handle(nd_dev, &nd_dev->irpidr, irp);
+
+}
+	 
+static void init_pfn(u64 *pfn, void *addr, u32 length)
+{
+	int i;
+	u32 offset = offset_in_page(addr);
+	u32 num_pfn = DIV_ROUND_UP(offset + length, PAGE_SIZE);
+
+	for (i = 0; i < num_pfn; i++) {
+		pfn[i] = virt_to_phys((u8*)addr + (PAGE_SIZE * i)) >> PAGE_SHIFT;
+	}
+
+}
+
+
+static void user_va_init_pfn(u64 *pfn, struct ib_umem *umem)
+{
+	int entry;
+	struct scatterlist *sg;
+	int i =0;
+
+	for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
+		pfn[i++] = page_to_pfn(sg_page(sg));
+	}
+}
+
+static u32 get_local_handle(void *p)
+{
+	u64 val = (unsigned long)p;
+
+	return (u32)val;
+}
+
+static int hvnd_send_pg_buffer(struct hvnd_dev *nd_dev,
+				struct vmbus_packet_mpb_array *desc,
+				u32 desc_size,
+				void *buffer,
+				u32 bufferlen, u64 cookie)
+{
+	int ret;
+	int t;
+	struct hvnd_cookie hvnd_cookie;
+
+	hvnd_cookie.pkt = (void *)cookie;
+	init_completion(&hvnd_cookie.host_event);
+
+	ret = vmbus_sendpacket_mpb_desc(nd_dev->hvdev->channel,
+					desc,
+					desc_size,
+					buffer, bufferlen,
+			       		(u64)(&hvnd_cookie));
+
+	if (ret) {
+		hvnd_error("vmbus_sendpacket_mpb_desc failed ret=%d\n", ret);
+		goto err;
+	}
+		
+	t = wait_for_completion_timeout(&hvnd_cookie.host_event, 500*HZ);
+
+	if (t == 0) {
+		hvnd_error("wait_for_completion_timeout timed out\n");
+		ret = -ETIMEDOUT;
+	}
+
+err:
+	return ret;
+}
+
+static int hvnd_send_packet(struct hvnd_dev *nd_dev, void *buffer,
+			    u32 bufferlen, u64 cookie, bool block)
+{
+	int ret;
+	int t;
+	struct hvnd_cookie hvnd_cookie;
+
+	hvnd_cookie.pkt = (void *)cookie;
+	init_completion(&hvnd_cookie.host_event);
+
+	ret = vmbus_sendpacket(nd_dev->hvdev->channel, buffer, bufferlen,
+			       (u64)(&hvnd_cookie), VM_PKT_DATA_INBAND,
+			       VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+
+	if (ret) {
+		hvnd_error("vmbus_send pkt failed: %d\n", ret);
+		goto err;
+	}
+
+	if (!block)
+		return ret;
+		
+	t = wait_for_completion_timeout(&hvnd_cookie.host_event, 500*HZ);
+
+	if (t == 0) {
+		hvnd_error("wait_for_completion_timeout timed out\n");
+		ret = -ETIMEDOUT;
+	}
+
+err:
+	return ret;
+}
+
+static int  hvnd_send_pgbuf_ioctl_pkt(struct hvnd_dev *nd_dev,
+				struct vmbus_packet_mpb_array *desc,
+				u32 desc_size,
+				struct ndv_packet_hdr_control_1 *hdr,
+				u32 pkt_size, u64 cookie)
+{
+	int ret;
+	int ioctl;
+
+	ioctl = hdr->io_cntrl_code;
+
+
+	ret = hvnd_send_pg_buffer(nd_dev, desc, desc_size,
+				hdr, pkt_size, cookie);
+
+	if (ret)
+		return ret;
+
+	if (hdr->pkt_hdr.status != 0) {
+		hvnd_error("IOCTL: %s failed; status is %x\n",
+			hvnd_get_op_name(ioctl),
+			hdr->pkt_hdr.status);
+		return -EINVAL;
+	}
+
+	switch (hdr->io_status) {
+	case STATUS_SUCCESS:
+	case STATUS_PENDING:
+		return 0;
+
+	default:
+		hvnd_error("IOCTL: %s failed io status is %x\n", hvnd_get_op_name(ioctl),
+			hdr->io_status);
+		return  -EINVAL;
+	}
+}
+
+int  hvnd_send_ioctl_pkt(struct hvnd_dev *nd_dev,
+				struct ndv_packet_hdr_control_1 *hdr,
+				u32 pkt_size, u64 cookie)
+{
+	int ret;
+	int ioctl;
+	bool block;
+
+	block = (hdr->irp_handle.val64 == 0) ? true : false;
+
+
+	ioctl = hdr->io_cntrl_code;
+
+	ret = hvnd_send_packet(nd_dev, hdr, pkt_size, cookie, block);
+
+	if (ret)
+		return ret;
+
+	if (!block)
+		return ret;
+
+	if (hdr->pkt_hdr.status != 0) {
+		hvnd_error("IOCTL: %s failed; status is %x\n", hvnd_get_op_name(ioctl),
+			hdr->pkt_hdr.status);
+		return -EINVAL;
+	}
+
+	switch (hdr->io_status) {
+	case STATUS_SUCCESS:
+	case STATUS_PENDING:
+		return 0;
+
+	default:
+		hvnd_warn("IOCTL: %s failed io status is %x\n", hvnd_get_op_name(ioctl),
+			hdr->io_status);
+		return -EINVAL;
+	}
+}
+
+void hvnd_init_hdr(struct ndv_packet_hdr_control_1 *hdr,
+			  u32 data_sz, u32 local, u32 remote,
+			  u32 ioctl_code,
+			  u32 ext_data_sz, u32 ext_data_offset,
+			  u64 irp_handle)
+
+{
+	int pkt_type;
+
+	pkt_type = NDV_PKT_ID1_CONTROL; 
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+	hdr->pkt_hdr.packet_type = pkt_type;
+	hdr->pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
+	hdr->pkt_hdr.data_sz = data_sz; 
+
+	hdr->pkt_hdr.status = 0;
+ 
+	hdr->file_handle.local = local;
+	hdr->file_handle.remote = remote;
+	hdr->irp_handle.val64 = irp_handle;
+
+	hdr->io_cntrl_code = ioctl_code;
+	hdr->output_buf_sz = data_sz - ext_data_sz;
+	hdr->input_buf_sz = data_sz - ext_data_sz;
+
+	hdr->input_output_buf_offset = 0;
+
+	hdr->extended_data.size = ext_data_sz;
+	hdr->extended_data.offset = ext_data_offset; 
+}
+
+
+int hvnd_create_file(struct hvnd_dev *nd_dev, void  *uctx,
+		     struct ndv_pkt_hdr_create_1 *create, u32 file_flags)
+{
+	int ret;
+	int pkt_type; 
+
+	
+	pkt_type = NDV_PKT_ID1_CREATE; 
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+	create->pkt_hdr.packet_type = pkt_type;
+	create->pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_create_1);
+	create->pkt_hdr.data_sz = 0;
+
+	create->handle.local = get_local_handle(uctx);
+	create->access_mask = STANDARD_RIGHTS_ALL;
+	create->open_options = OPEN_EXISTING;
+	create->file_attributes = FILE_ATTRIBUTE_NORMAL | file_flags;
+	create->share_access = FILE_SHARE_ALL;
+ 
+	ret = hvnd_send_packet(nd_dev, create,
+			       sizeof(struct ndv_pkt_hdr_create_1),
+			       (unsigned long)create, true);
+	return ret;
+}
+
+int hvnd_cleanup_file(struct hvnd_dev *nd_dev, u32 local, u32 remote)
+{
+	int ret;
+	int pkt_type; 
+	struct ndv_pkt_hdr_cleanup_1 cleanup_pkt;
+
+	
+	pkt_type = NDV_PKT_ID1_CLEANUP; 
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+
+	cleanup_pkt.pkt_hdr.packet_type = pkt_type;
+	cleanup_pkt.pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_create_1);
+	cleanup_pkt.pkt_hdr.data_sz = 0;
+
+	cleanup_pkt.handle.local = local;
+	cleanup_pkt.handle.remote = remote;
+ 
+	ret = hvnd_send_packet(nd_dev, &cleanup_pkt,
+			       sizeof(struct ndv_pkt_hdr_create_1),
+			       (unsigned long)&cleanup_pkt, true);
+	return ret;
+}
+
+
+static int  hvnd_do_ioctl(struct hvnd_dev *nd_dev, u32 ioctl,
+		     struct pkt_nd_provider_ioctl *pkt,
+		     union ndv_context_handle *hdr_handle,
+		     struct nd_handle  *ioctl_handle,
+		     u8 *buf, u32 buf_len, bool c_in, bool c_out, u64 irp_val)
+{
+	int ret;
+	int pkt_type; 
+
+	pkt_type = NDV_PKT_ID1_CONTROL; 
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+
+	pkt->hdr.pkt_hdr.packet_type = pkt_type;
+	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
+	pkt->hdr.pkt_hdr.data_sz = (sizeof(struct pkt_nd_provider_ioctl) -
+					sizeof(struct ndv_packet_hdr_control_1));
+
+	pkt->hdr.file_handle.local = hdr_handle->local;
+	pkt->hdr.file_handle.remote = hdr_handle->remote;
+	hvnd_debug("create handle local: %x remote: %x\n", hdr_handle->local, hdr_handle->remote);
+
+	pkt->hdr.irp_handle.val64 = irp_val;
+
+	pkt->hdr.io_cntrl_code = ioctl;
+	pkt->hdr.output_buf_sz = sizeof(struct nd_ioctl);
+	pkt->hdr.input_buf_sz = sizeof(struct nd_ioctl);
+	pkt->hdr.input_output_buf_offset = 0;
+	memset(&pkt->ioctl.handle, 0, sizeof(struct nd_handle));
+	pkt->ioctl.handle.version = ND_VERSION_1;
+
+	switch (ioctl) {
+	case IOCTL_ND_PROVIDER_BIND_FILE:
+		pkt->ioctl.handle.handle = ioctl_handle->handle;
+		break;
+	default:
+		break;
+	};
+
+	/*
+	 * Copy the input buffer, if needed.
+	 */
+
+	if (c_in && (buf != NULL))
+		memcpy(pkt->ioctl.raw_buffer, buf, buf_len); 
+		
+	ret = hvnd_send_packet(nd_dev, pkt,
+			       sizeof(struct pkt_nd_provider_ioctl),
+			       (unsigned long)pkt, true);
+
+	if (ret)
+		return ret;
+
+	if (c_out && (buf != NULL))
+		memcpy(buf, pkt->ioctl.raw_buffer, buf_len); 
+
+	return ret;
+}
+
+static int idr_callback(int id, void *p, void *data)
+{
+	if (p == data)
+		return id;
+	return 0;
+}
+
+void remove_uctx(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
+{
+	int pid = current_pid();
+	unsigned long flags;
+	int id;
+
+	if (get_uctx(nd_dev, pid) == uctx)
+		remove_handle(nd_dev, &nd_dev->uctxidr, pid);
+	else {
+		hvnd_warn("uctx %p not found on pid %d, doing a idr search\n", uctx, current_pid());
+
+		spin_lock_irqsave(&nd_dev->id_lock, flags);
+		id = idr_for_each(&nd_dev->uctxidr, idr_callback, uctx);
+		spin_unlock_irqrestore(&nd_dev->id_lock, flags);
+
+		if (id)
+			remove_handle(nd_dev, &nd_dev->uctxidr, id);
+		else {
+			hvnd_error("uctx %p not found in idr table\n", uctx);
+			return;
+		}
+	}
+
+	kfree(uctx);
+}
+
+int hvnd_close_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
+{
+	int ret;
+
+	/*
+	 * First close the adaptor.
+	 */
+
+	ret = hvnd_free_handle(nd_dev, uctx,
+				uctx->adaptor_hdl,
+				IOCTL_ND_ADAPTER_CLOSE);
+
+	if (ret)
+		hvnd_error("Adaptor close failed; ret is %x\n", ret);
+
+	/*
+	 * Now close the two files we created.
+	 */
+
+	ret = hvnd_cleanup_file(nd_dev, uctx->file_handle_ovl.local,
+				uctx->file_handle_ovl.remote);
+
+	if (ret)
+		hvnd_error("file cleanup failed; ret is %x\n", ret);
+
+	ret = hvnd_cleanup_file(nd_dev, uctx->file_handle.local,
+				uctx->file_handle.remote);
+
+	if (ret)
+		hvnd_error("File cleanup failed; ret is %x\n", ret);
+
+	/*
+	 * Remove the uctx from the ID table.
+	 */
+	remove_uctx(nd_dev, uctx);
+
+	return 0;
+}
+
+int hvnd_open_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
+{
+	int ret;
+	struct pkt_nd_provider_ioctl *pr_init = &uctx->pr_init_pkt;
+	int pkt_type; 
+	struct nd_handle ioctl_handle;
+	struct pkt_nd_open_adapter *pr_o_adap = &uctx->o_adap_pkt;
+ 
+	ret = hvnd_create_file(nd_dev, uctx, &uctx->create_pkt, 0);
+	if (ret) {
+		hvnd_error("hvnd_create_file failed ret=%d\n", ret);
+		goto error_cr;
+	}
+
+	if (uctx->create_pkt.pkt_hdr.status != 0) {
+		hvnd_error("create File failed; status is %d\n",
+			uctx->create_pkt.pkt_hdr.status);
+		ret = -EINVAL;
+		goto error_cr;
+	}
+
+	uctx->file_handle.local = uctx->create_pkt.handle.local; 
+	uctx->file_handle.remote = uctx->create_pkt.handle.remote; 
+	hvnd_debug("INITIALIZE PROVIDER\n");
+	/*
+	 * Now Initialize the Provider.
+	 */
+	ioctl_handle.handle = 0;
+	ret = hvnd_do_ioctl(nd_dev, IOCTL_ND_PROVIDER_INIT, pr_init,
+			    &uctx->create_pkt.handle,
+		     	    &ioctl_handle, NULL, 0, false, false, 0);
+
+	if (ret) {
+		ret = -EINVAL;
+		goto error_pr_init;
+	}
+
+	if (pr_init->hdr.pkt_hdr.status != 0) {
+		hvnd_error("Provider INIT failed; status is %d\n",
+			pr_init->hdr.pkt_hdr.status);
+		ret = -EINVAL;
+		goto error_pr_init;
+	}
+
+	if (pr_init->hdr.io_status != 0) {
+		hvnd_error("Provider INIT failed; io status is %d\n",
+			pr_init->hdr.io_status);
+		ret = -EINVAL;
+		goto error_pr_init;
+	}
+
+	/*
+	 * Now create the overlap file.
+	 */
+ 
+	hvnd_debug("CREATE OVERLAP FILE\n");
+	ret = hvnd_create_file(nd_dev, uctx, &uctx->create_pkt_ovl,
+			       FILE_FLAG_OVERLAPPED);
+	if (ret) {
+		hvnd_error("hvnd_create_file failed ret=%d\n", ret);
+		goto error_pr_init;
+	}
+
+	if (uctx->create_pkt_ovl.pkt_hdr.status != 0) {
+		hvnd_error("create Overlap File failed; status is %d\n",
+			uctx->create_pkt_ovl.pkt_hdr.status);
+		ret = -EINVAL;
+		goto error_pr_init;
+	}
+	uctx->file_handle_ovl.local = uctx->create_pkt_ovl.handle.local; 
+	uctx->file_handle_ovl.remote = uctx->create_pkt_ovl.handle.remote; 
+
+	/*
+	 * Now bind the two file handles together.
+	 */
+
+	hvnd_debug("BIND FILE IOCTL remote handle: %d local handle: %d\n", 
+		uctx->create_pkt_ovl.handle.remote, 
+		uctx->create_pkt_ovl.handle.local);
+
+	ioctl_handle.handle = uctx->create_pkt_ovl.handle.val64; 
+	ret = hvnd_do_ioctl(nd_dev, IOCTL_ND_PROVIDER_BIND_FILE, pr_init,
+			    &uctx->create_pkt.handle,
+		     	    &ioctl_handle, NULL, 0, false, false, 0);
+
+	if (ret) {
+		ret = -EINVAL;
+		goto error_file_bind;
+	}
+	if (pr_init->hdr.pkt_hdr.status != 0) {
+		hvnd_error("Provider File bind failed; status is %d\n",
+			pr_init->hdr.pkt_hdr.status);
+		ret = -EINVAL;
+		goto error_file_bind;
+	}
+	if (pr_init->hdr.io_status != 0) {
+		hvnd_error("Provider INIT failed; io status is %d\n",
+			pr_init->hdr.io_status);
+		ret = -EINVAL;
+		goto error_file_bind;
+	}
+
+	/*
+	 * Now open the adaptor.
+	 */
+
+	hvnd_debug("OPENING THE ADAPTOR\n");
+
+	pkt_type = NDV_PKT_ID1_CONTROL; 
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+	pr_o_adap->hdr.pkt_hdr.packet_type = pkt_type;
+	pr_o_adap->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
+	pr_o_adap->hdr.pkt_hdr.data_sz = (sizeof(struct pkt_nd_open_adapter) -
+					sizeof(struct ndv_packet_hdr_control_1));
+
+	pr_o_adap->hdr.pkt_hdr.status = 0;
+
+	hvnd_debug("hdr sz is %d\n", pr_o_adap->hdr.pkt_hdr.hdr_sz);
+	hvnd_debug("data sz is %d\n", pr_o_adap->hdr.pkt_hdr.data_sz);
+
+	pr_o_adap->hdr.file_handle.local = uctx->create_pkt.handle.local;
+	pr_o_adap->hdr.file_handle.remote = uctx->create_pkt.handle.remote;
+	hvnd_debug("create handle local is %x\n", uctx->create_pkt.handle.local);
+	hvnd_debug("create handle remote is %x\n", uctx->create_pkt.handle.remote);
+	pr_o_adap->hdr.irp_handle.val64 = 0;
+
+	pr_o_adap->hdr.io_cntrl_code = IOCTL_ND_ADAPTER_OPEN;
+	pr_o_adap->hdr.output_buf_sz = pr_o_adap->hdr.pkt_hdr.data_sz - sizeof(struct extended_data_oad);
+	pr_o_adap->hdr.input_buf_sz = pr_o_adap->hdr.pkt_hdr.data_sz -sizeof(struct extended_data_oad);
+
+	hvnd_debug("output buf sz is %d\n", pr_o_adap->hdr.output_buf_sz);
+	hvnd_debug("input buf sz is %d\n", pr_o_adap->hdr.input_buf_sz);
+	hvnd_debug("packet size is %d\n", (int)sizeof(struct pkt_nd_open_adapter));
+
+	pr_o_adap->hdr.input_output_buf_offset = 0;
+
+
+	pr_o_adap->hdr.extended_data.size = sizeof(struct extended_data_oad);
+	pr_o_adap->hdr.extended_data.offset = offsetof(struct pkt_nd_open_adapter, ext_data) -
+						sizeof(struct ndv_packet_hdr_control_1);
+
+	hvnd_debug("size of the extended data size: %d\n", (int)sizeof(struct extended_data_oad));
+	hvnd_debug("offset of extended data: %d\n", pr_o_adap->hdr.extended_data.offset);
+
+	/*
+	 * Now fill out the ioctl section.
+	 */
+
+	pr_o_adap->ioctl.input.version = ND_VERSION_1; 
+	pr_o_adap->ioctl.input.ce_mapping_cnt =
+		RTL_NUMBER_OF(pr_o_adap->mappings.ctx_input.mappings); 
+
+	hvnd_debug("ce_mapping cnt is %d\n", pr_o_adap->ioctl.input.ce_mapping_cnt);
+
+	pr_o_adap->ioctl.input.cb_mapping_offset = sizeof(union oad_ioctl);
+	hvnd_debug("cb_mapping offset is %d\n", pr_o_adap->ioctl.input.cb_mapping_offset);
+	pr_o_adap->ioctl.input.adapter_id = (u64)nd_dev;
+
+	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_type = ND_MAP_IOSPACE;
+	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_io_space.cache_type = ND_NON_CACHED;
+	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_io_space.cb_length = 4096;
+
+	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_type  = ND_MAP_IOSPACE;
+	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_io_space.cache_type = ND_WRITE_COMBINED;
+	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_io_space.cb_length = 4096;
+
+	/*
+	 * Fill in the extended data.
+	 */
+	pr_o_adap->ext_data.cnt = IBV_GET_CONTEXT_MAPPING_MAX;
+
+	ret = hvnd_send_packet(nd_dev, pr_o_adap,
+			       sizeof(struct pkt_nd_open_adapter),
+			       (unsigned long)pr_o_adap, true);
+	if (ret) {
+		ret = -EINVAL;
+		goto error_file_bind;
+	}
+
+	if (pr_o_adap->hdr.pkt_hdr.status != 0) {
+		hvnd_error("Open adaptor failed; status is %d\n",
+			pr_o_adap->hdr.pkt_hdr.status);
+		ret = -EINVAL;
+		goto error_file_bind;
+	}
+
+	if (pr_o_adap->hdr.io_status != 0) {
+		hvnd_error("Open adaptor failed;io status is %d\n",
+			pr_o_adap->hdr.io_status);
+		ret = -EINVAL;
+		goto error_file_bind;
+	}
+
+	/*
+	 * Copy the necessary response from the host.
+	 */
+
+	uctx->adaptor_hdl = pr_o_adap->ioctl.resrc_desc.handle;
+	
+
+	hvnd_debug("adaptor handle: %p\n", (void *)uctx->adaptor_hdl);
+
+	uctx->uar_base =
+	pr_o_adap->mappings.ctx_output.mapping_results[IBV_GET_CONTEXT_UAR].info;
+	hvnd_debug("uar base: %p\n", (void *)uctx->uar_base);
+
+	uctx->bf_base =
+	pr_o_adap->mappings.ctx_output.mapping_results[IBV_GET_CONTEXT_BF].info;
+	hvnd_debug("bf base: %p\n", (void *)uctx->bf_base);
+
+	uctx->bf_buf_size =
+	pr_o_adap->mappings.ctx_output.bf_buf_size;
+	hvnd_debug("bf buf size: %d\n", uctx->bf_buf_size);
+
+	uctx->bf_offset =
+	pr_o_adap->mappings.ctx_output.bf_offset;
+	hvnd_debug("bf offset: %d\n", uctx->bf_offset);
+
+	uctx->cqe_size =
+	pr_o_adap->mappings.ctx_output.cqe_size;
+	hvnd_debug("cqe size: %d\n", uctx->cqe_size);
+
+	uctx->max_qp_wr =
+	pr_o_adap->mappings.ctx_output.max_qp_wr;
+	hvnd_debug("max qp wr: %d\n", uctx->max_qp_wr);
+
+	uctx->max_sge =
+	pr_o_adap->mappings.ctx_output.max_sge;
+	hvnd_debug("max sge: %d\n", uctx->max_sge);
+
+	uctx->max_cqe =
+	pr_o_adap->mappings.ctx_output.max_cqe;
+	hvnd_debug("max cqe: %d\n", uctx->max_cqe);
+
+	uctx->num_qps =
+	pr_o_adap->mappings.ctx_output.qp_tab_size;
+	hvnd_debug("num qps: %d\n", uctx->num_qps);
+
+	/*
+	 * Now query the adaptor and stash away the adaptor info.
+	 */
+
+	ret = hvnd_query_adaptor(nd_dev, uctx);
+	if (ret) {
+		hvnd_error("Query Adaptor failed; ret is %d\n", ret);
+		goto query_err;
+	}
+
+	return ret;
+
+query_err:
+	hvnd_free_handle(nd_dev, uctx,
+			uctx->adaptor_hdl,
+			IOCTL_ND_ADAPTER_CLOSE);
+
+	hvnd_error("Open Adaptor Failed!!\n");
+
+error_file_bind:
+	hvnd_cleanup_file(nd_dev, uctx->file_handle_ovl.local,
+			uctx->file_handle_ovl.remote);
+
+error_pr_init:
+	hvnd_cleanup_file(nd_dev, uctx->file_handle.local,
+			uctx->file_handle.remote);
+
+error_cr:
+	if (get_uctx(nd_dev, current_pid()) != NULL)
+		remove_handle(nd_dev, &nd_dev->uctxidr, current_pid());
+
+	return ret;
+}
+
+int hvnd_create_cq(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		   struct hvnd_cq *cq)
+{
+	int ret;
+	struct pkt_nd_create_cq *pkt;
+	int num_pfn, num_db_pfn, num_sn_pfn;
+	int cq_pkt_size;
+	unsigned int cq_buf_size, offset;
+	u32 ext_data_sz;
+	u32 ext_data_offset;
+
+	/*
+	 * Now create CQ.
+	 * First compute the number of PFNs we need to accomodate:
+	 * One each for door bell and arm_sn and pages in cq buffer.
+	 */
+	cq_buf_size = (cq->entries * uctx->cqe_size);
+	offset = offset_in_page(cq->cq_buf);
+	num_pfn = DIV_ROUND_UP(offset + cq_buf_size, PAGE_SIZE);
+
+	offset = offset_in_page(cq->db_addr);
+	num_db_pfn = DIV_ROUND_UP(offset + 8, PAGE_SIZE);
+
+	offset = offset_in_page(&cq->arm_sn);
+	num_sn_pfn = DIV_ROUND_UP(offset + 4, PAGE_SIZE);
+
+	cq_pkt_size = sizeof(struct pkt_nd_create_cq) +
+		(num_pfn  * sizeof(u64));
+
+	ext_data_sz = sizeof(struct create_cq_ext_data) + (num_pfn * sizeof(u64));
+	ext_data_offset = offsetof(struct pkt_nd_create_cq, ext_data) -
+						sizeof(struct ndv_packet_hdr_control_1);
+
+	hvnd_debug("CREATE CQ, num user addr pfns is %d\n", num_pfn);
+	hvnd_debug("CREATE CQ, num db pfns is %d\n", num_db_pfn);
+
+	pkt = kzalloc(cq_pkt_size, GFP_KERNEL);
+
+	if (!pkt)
+		return -ENOMEM;
+
+	hvnd_init_hdr(&pkt->hdr,
+			(cq_pkt_size -
+			sizeof(struct ndv_packet_hdr_control_1)),
+			uctx->create_pkt.handle.local,
+			uctx->create_pkt.handle.remote,
+			IOCTL_ND_CQ_CREATE,
+			ext_data_sz,
+			ext_data_offset,
+			0);
+
+	/*
+	 * Now fill out the ioctl section.
+	 */
+
+	pkt->ioctl.input.version = ND_VERSION_1; 
+	pkt->ioctl.input.queue_depth = cq->entries;
+	pkt->ioctl.input.ce_mapping_cnt = MLX4_IB_CREATE_CQ_MAPPING_MAX;
+	pkt->ioctl.input.cb_mapping_offset = sizeof(union create_cq_ioctl);
+
+	hvnd_debug("ce_mapping cnt is %d\n",  pkt->ioctl.input.ce_mapping_cnt);
+	hvnd_debug("cb_mapping offset is %d\n", pkt->ioctl.input.cb_mapping_offset);
+
+	pkt->ioctl.input.adapter_handle = uctx->adaptor_hdl;
+	pkt->ioctl.input.affinity.mask = 0;
+	pkt->ioctl.input.affinity.group = -1;
+
+	// 0 for usermode CQ arming
+	pkt->mappings.cq_in.flags = 0;
+
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.map_type = ND_MAP_MEMORY;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.access_type = ND_MODIFY_ACCESS;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.address = (u64)cq->cq_buf;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.cb_length = (cq->entries * uctx->cqe_size);
+
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.map_type = ND_MAP_MEMORY_COALLESCE;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.access_type = ND_WRITE_ACCESS;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.address = (u64)cq->db_addr;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.cb_length = 8; //size of two ints
+
+
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.map_type = ND_MAP_MEMORY;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.access_type = ND_MODIFY_ACCESS;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.address = (u64)&cq->arm_sn;
+	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.cb_length = 4; //size of one int 
+	/*
+	 * Fill in the extended data.
+	 */
+
+	pkt->ext_data.cnt = 3;
+	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_BUF].size = (sizeof(struct gpa_range) + (num_pfn * sizeof(u64)));
+	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_BUF].offset = offsetof(struct create_cq_ext_data, cqbuf_gpa); 
+
+	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_DB].size = sizeof(struct cq_db_gpa);
+	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_DB].offset = offsetof(struct create_cq_ext_data, db_gpa); 
+
+	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_ARM_SN].size = sizeof(struct cq_db_gpa);
+	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_ARM_SN].offset = offsetof(struct create_cq_ext_data, sn_gpa);
+
+	/*
+	 * Fill up the gpa range for cq buffer.
+	 */ 
+
+	pkt->ext_data.db_gpa.byte_count = 8;
+	pkt->ext_data.db_gpa.byte_offset = offset_in_page(cq->db_addr);
+	user_va_init_pfn(&pkt->ext_data.db_gpa.pfn_array[0], cq->db_umem);
+
+	pkt->ext_data.sn_gpa.byte_count = 4;
+	pkt->ext_data.sn_gpa.byte_offset = offset_in_page(&cq->arm_sn);
+	init_pfn(&pkt->ext_data.sn_gpa.pfn_array[0],
+		 &cq->arm_sn,
+		 4);
+
+	pkt->ext_data.cqbuf_gpa.byte_count = (cq->entries * uctx->cqe_size);
+	pkt->ext_data.cqbuf_gpa.byte_offset = offset_in_page(cq->cq_buf);
+	user_va_init_pfn(&pkt->ext_data.cqbuf_gpa.pfn_array[0], cq->umem);
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, cq_pkt_size, (u64)pkt);
+
+	if (ret)
+		goto cr_cq_err;
+
+	/*
+	 * Copy the necessary response from the host.
+	 */
+	cq->cqn = pkt->mappings.cq_resp.cqn;
+	cq->cqe = pkt->mappings.cq_resp.cqe;
+	cq->cq_handle = pkt->ioctl.resrc_desc.handle;
+
+	ret = insert_handle(nd_dev, &nd_dev->cqidr, cq, cq->cqn);
+
+	if (ret)
+		goto cr_cq_err;
+	hvnd_debug("CQ create after success cqn is %d\n", cq->cqn);
+	hvnd_debug("CQ create after success cqe is %d\n", cq->cqe);
+	hvnd_debug("CQ create after success cq handle is %p\n", (void *)cq->cq_handle);
+
+cr_cq_err:
+	kfree(pkt);
+	return ret;
+}
+
+int hvnd_destroy_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq)
+{
+	struct pkt_nd_free_cq free_cq_pkt;
+	int ret;
+ 
+	memset(&free_cq_pkt, 0, sizeof(free_cq_pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&free_cq_pkt.hdr,
+		      sizeof(struct pkt_nd_free_cq) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      cq->uctx->create_pkt.handle.local,
+		      cq->uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CQ_FREE, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	free_cq_pkt.ioctl.in.version = ND_VERSION_1;
+	free_cq_pkt.ioctl.in.handle = cq->cq_handle; 
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &free_cq_pkt.hdr, 
+			       sizeof(struct pkt_nd_free_cq),
+			       (u64)&free_cq_pkt);
+
+	if (ret)
+		goto free_cq_err;
+
+	remove_handle(nd_dev, &nd_dev->cqidr, cq->cqn);
+
+	return 0;
+
+free_cq_err:
+	return ret;
+}
+
+
+int hvnd_notify_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq,
+		   u32 notify_type, u64 irp_handle)
+{
+	struct pkt_nd_notify_cq notify_cq_pkt;
+	int ret;
+	union ndv_context_handle irp_fhandle;
+
+	irp_fhandle.local = cq->ep_object.local_irp;
+
+
+	memset(&notify_cq_pkt, 0, sizeof(notify_cq_pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&notify_cq_pkt.hdr,
+		      sizeof(struct pkt_nd_notify_cq) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      cq->uctx->create_pkt.handle.local,
+		      cq->uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CQ_NOTIFY, 0, 0, irp_fhandle.val64);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	notify_cq_pkt.ioctl.in.version = ND_VERSION_1;
+	notify_cq_pkt.ioctl.in.cq_handle = cq->cq_handle; 
+	notify_cq_pkt.ioctl.in.type = notify_type; 
+ 
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &notify_cq_pkt.hdr, 
+			       sizeof(struct pkt_nd_notify_cq),
+			       (u64)&notify_cq_pkt);
+
+	return ret;
+}
+
+/*
+ * Memory region operations.
+ */
+int hvnd_cr_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		u64 pd_handle, u64 *mr_handle)
+{
+	struct pkt_nd_create_mr pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_MR_CREATE, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.handle = pd_handle;
+	hvnd_debug("PD handle is %p\n", (void *)pd_handle);
+	pkt.ioctl.in.reserved = 0;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	/*
+	 * Copy the  handle.
+	 */
+	hvnd_debug("mr handle is %p\n", (void *)pkt.ioctl.out);
+	*mr_handle = pkt.ioctl.out;
+
+	return 0;
+
+err:
+	hvnd_error("create mr failed: %d\n", ret);
+	return ret;
+
+}
+
+int hvnd_free_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		 u64 handle)
+{
+	return hvnd_free_handle(nd_dev, uctx, handle, IOCTL_ND_MR_FREE);
+}
+
+int hvnd_deregister_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle)
+{
+	struct pkt_nd_deregister_mr pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_MR_DEREGISTER, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.handle = handle;
+	pkt.ioctl.in.reserved = 0;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret) 
+		goto err;
+
+	return 0;
+
+err:
+	hvnd_error("de-register mr failed: %d\n", ret);
+	return ret;
+
+}
+
+static inline u32 hvnd_convert_access(int acc)
+{
+	return (acc & IB_ACCESS_REMOTE_WRITE ? ND_MR_FLAG_ALLOW_REMOTE_WRITE : 0) |
+	    (acc & IB_ACCESS_REMOTE_READ ? ND_MR_FLAG_ALLOW_REMOTE_READ : 0) |
+	    (acc & IB_ACCESS_LOCAL_WRITE ? ND_MR_FLAG_ALLOW_LOCAL_WRITE : 0);
+}
+
+
+int hvnd_mr_register(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		     struct hvnd_mr *mr)
+{
+	struct pkt_nd_register_mr pkt;
+	int ret;
+	struct hv_mpb_array *pb;
+	struct vmbus_packet_mpb_array *tpb;
+	int sz_leaf;
+	int num_pgs;
+	int i =0;
+	int ext_data_sz;
+	u32 acc_flags;
+	u32 desc_size;
+	int pkt_type;
+
+	/*
+	 * The user address is passed in via a two level structure.
+	 * An Array of struct hv_page_buffer will be used to describe
+	 * the user memory. The pages containing this array will be descibed
+	 * in another array of struct hv_page_buffer. We pass this seconed level
+	 * array to the host.
+	 */
+
+	hvnd_debug("ib_umem_page_count(mr->umem)=%d\n", ib_umem_page_count(mr->umem));
+
+	sz_leaf = ib_umem_page_count(mr->umem) * sizeof(u64) + sizeof(struct hv_mpb_array);
+
+	pb = (struct hv_mpb_array*) __get_free_pages(GFP_KERNEL|__GFP_ZERO, get_order(sz_leaf));
+
+	if (pb == NULL)
+		return -ENOMEM;
+	/*
+	 * Allocate an array of hv_page_buffer to describe the first level.
+	 */
+	num_pgs = DIV_ROUND_UP(sz_leaf, PAGE_SIZE);
+	hvnd_debug("num pages in the top array is %d\n", num_pgs);
+
+	desc_size = (num_pgs * sizeof(u64) +
+			sizeof(struct vmbus_packet_mpb_array));
+	tpb = (struct vmbus_packet_mpb_array*) __get_free_pages(GFP_KERNEL|__GFP_ZERO, get_order(desc_size));
+
+	if (tpb == NULL) {
+		free_pages((unsigned long)pb, get_order(sz_leaf));
+		return -ENOMEM;
+	}
+
+	hvnd_debug("sz leaf: %d; pgs in top %d\n", sz_leaf, num_pgs);
+
+	/*
+	 * Now fill the leaf level array.
+	 */
+	pb->len = mr->length;
+	pb->offset = offset_in_page(mr->start);
+	user_va_init_pfn(pb->pfn_array, mr->umem);
+
+	/*
+	 * Now fill out the top level array.
+	 */
+	for (i = 0; i < num_pgs; i++) {
+		tpb->range.pfn_array[i] = virt_to_phys((u8*)pb + (PAGE_SIZE * i)) >> PAGE_SHIFT;
+		hvnd_debug("virtual address = %p\n", (u8*)pb + (PAGE_SIZE * i));
+		hvnd_debug("physical address = %llx\n", virt_to_phys((u8*)pb + (PAGE_SIZE * i)));
+		hvnd_debug("tpb->range.pfn_array[%d]=%llx\n", i, tpb->range.pfn_array[i]);
+	}
+
+	tpb->range.offset = 8;
+	tpb->range.len = ib_umem_page_count(mr->umem) * sizeof(u64);
+	
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	ext_data_sz = (ib_umem_page_count(mr->umem) * sizeof(u64));
+	acc_flags = ND_MR_FLAG_DO_NOT_SECURE_VM | hvnd_convert_access(mr->acc);
+	hvnd_debug("memory register access flags are: %x\n", acc_flags);
+
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_MR_REGISTER, 0, 0, 0);
+
+	/*
+	 * The memory registration call uses a different mechanism to pass
+	 * pfn information.
+	 */
+
+	pkt_type = pkt.hdr.pkt_hdr.packet_type;
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTION_EXTERNAL_DATA);
+	pkt.hdr.pkt_hdr.packet_type = pkt_type;
+
+	pkt.hdr.extended_data.size = ext_data_sz;
+	pkt.hdr.extended_data.offset = 0; 
+	/*
+	 * Now fill out the ioctl.
+	 */
+
+	pkt.ioctl.in.header.version = ND_VERSION_1;
+	pkt.ioctl.in.header.flags = acc_flags;
+	pkt.ioctl.in.header.cb_length = mr->length;
+	pkt.ioctl.in.header.target_addr = mr->virt;
+	pkt.ioctl.in.header.mr_handle = mr->mr_handle;
+	pkt.ioctl.in.address = mr->virt;
+
+	/*
+	 * Now send the packet to the host.
+	 */
+
+	ret = hvnd_send_pgbuf_ioctl_pkt(nd_dev,
+					tpb, desc_size,
+					&pkt.hdr, 
+					sizeof(pkt),
+					(unsigned long)&pkt);
+
+	if (ret)
+		goto err;
+
+	hvnd_info("MR REGISTRATION SUCCESS\n");
+	/*
+	 * Copy the mr registration data.
+	 */
+	hvnd_debug("mr registration lkey %x\n", pkt.ioctl.out.lkey);
+	hvnd_debug("mr registration rkey %x\n", pkt.ioctl.out.rkey);
+
+	mr->mr_lkey = pkt.ioctl.out.lkey;
+	mr->mr_rkey = pkt.ioctl.out.rkey;
+
+	mr->ibmr.lkey = mr->mr_lkey; 
+	mr->ibmr.rkey = be32_to_cpu(mr->mr_rkey); 
+	hvnd_debug("ibmr registration lkey %x\n", mr->ibmr.lkey);
+	hvnd_debug("ibmr registration rkey  %x\n", mr->ibmr.rkey);
+
+	free_pages((unsigned long)pb, get_order(sz_leaf));
+	free_pages((unsigned long)tpb, get_order(desc_size));
+
+	return 0;
+
+err:
+	free_pages((unsigned long)pb, get_order(sz_leaf));
+	free_pages((unsigned long)tpb, get_order(desc_size));
+
+	hvnd_error("mr register failed: %d\n", ret);
+	return ret;
+}
+
+/*
+ * Listener operations.
+ */
+int hvnd_cr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		     u64 *listener_handle)
+{
+	struct pkt_nd_cr_listener pkt;
+	int ret;
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_LISTENER_CREATE, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.hdr.version = ND_VERSION_1;
+	pkt.ioctl.in.hdr.handle = uctx->adaptor_hdl;
+	hvnd_debug("Adaptor handle is %p\n", (void *)uctx->adaptor_hdl);
+	pkt.ioctl.in.hdr.reserved = 0;
+	pkt.ioctl.in.to_semantics = false;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	/*
+	 * Copy the listener handle.
+	 */
+	hvnd_debug("listener handle is %p\n", (void *)pkt.ioctl.out);
+	*listener_handle = pkt.ioctl.out;
+
+	return 0;
+
+err:
+	hvnd_error("create listener failed: ret=%d uctx=%p adaptor handle=%llu\n", ret, uctx, uctx->adaptor_hdl);
+	return ret;
+
+}
+
+int hvnd_free_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle)
+{
+	struct pkt_nd_free_listener pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_LISTENER_FREE, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.handle = listener_handle;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	hvnd_error("free listener failed: %d\n", ret);
+	return ret;
+}
+
+int hvnd_bind_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, union nd_sockaddr_inet *addr)
+{
+	struct pkt_nd_bind_listener pkt;
+	kuid_t uid = current_uid();
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_LISTENER_BIND, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.hdr.version = ND_VERSION_1;
+	pkt.ioctl.in.hdr.handle = listener_handle;
+	pkt.ioctl.in.hdr.reserved = 0;
+ 
+	pkt.ioctl.in.authentication_id = (u32)uid.val;
+	pkt.ioctl.in.is_admin = false;
+
+	memcpy(&pkt.ioctl.in.hdr.address, addr, sizeof(*addr));
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	hvnd_error("bind listener failed: %d\n", ret);
+	return ret;
+}
+
+int hvnd_listen_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, u32 backlog)
+{
+	struct pkt_nd_listen_listener pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_LISTENER_LISTEN, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.listener_handle = listener_handle;
+	pkt.ioctl.in.back_log = backlog;
+
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	hvnd_error("listen listener failed: %d\n", ret);
+	return ret;
+}
+
+int hvnd_get_addr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, union nd_sockaddr_inet *addr)
+{
+	struct pkt_nd_get_addr_listener pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_LISTENER_GET_ADDRESS, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.handle = listener_handle;
+
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	/*
+	 * Copy the adddress.
+	 */
+
+	memcpy(addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
+
+	return 0;
+
+err:
+	hvnd_error("listen listener failed: %d\n", ret);
+	return ret;
+}
+
+int hvnd_get_connection_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, u64 connector_handle,
+			u64 irp_handle)
+{
+	struct pkt_nd_get_connection_listener pkt;
+	int ret;
+	union ndv_context_handle irp_fhandle;
+
+	ret = get_irp_handle(nd_dev, &irp_fhandle.local, (void *)irp_handle);
+
+	if (ret) {
+		hvnd_error("get_irp_handle() failed: err: %d\n", ret);
+		return ret;
+	}
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST, 0, 0,
+		      irp_fhandle.val64);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.listener_handle = listener_handle;
+	pkt.ioctl.in.connector_handle = connector_handle;
+
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	hvnd_error("get connection listener failed: %d\n", ret);
+	return ret;
+}
+
+/*
+ * Connector APIs.
+ */
+
+int hvnd_cr_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		     u64 *connector_handle)
+{
+	struct pkt_nd_cr_connector pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(struct pkt_nd_cr_listener) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_CREATE, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.hdr.version = ND_VERSION_1;
+	pkt.ioctl.in.hdr.handle = uctx->adaptor_hdl;
+	pkt.ioctl.in.to_semantics = false;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	/*
+	 * Copy the listener handle.
+	 */
+	hvnd_debug("connector handle is %p\n", (void *)pkt.ioctl.out);
+	*connector_handle = pkt.ioctl.out;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_free_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle)
+{
+	struct pkt_nd_free_connector pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_FREE, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.handle = handle;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_bind_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle, union nd_sockaddr_inet *addr)
+{
+	struct pkt_nd_bind_connector pkt;
+	int ret;
+	kuid_t uid = current_uid();
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_BIND, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.hdr.version = ND_VERSION_1;
+	pkt.ioctl.in.hdr.handle = handle;
+
+	memcpy(&pkt.ioctl.in.hdr.address, addr, sizeof(*addr));
+
+	pkt.ioctl.in.authentication_id = (u32)uid.val;
+	pkt.ioctl.in.is_admin = false;
+	
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle, u32 in_rd_limit, u32 out_rd_limit,
+			u32 priv_data_length, const u8 *priv_data,
+			u64 qp_handle, struct if_physical_addr *phys_addr,
+			union nd_sockaddr_inet *dest_addr, struct hvnd_ep_obj *ep)
+{
+	struct pkt_nd_connector_connect *pkt = &ep->connector_connect_pkt;
+	int ret;
+	union ndv_context_handle irp_fhandle;
+
+	hvnd_debug("local irp is %d\n", ep->local_irp);
+	irp_fhandle.local = ep->local_irp;
+ 
+	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
+		hvnd_error("priv_data_length=%d\n", priv_data_length);
+		return -EINVAL;
+	}
+
+	memset(pkt, 0, sizeof(*pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt->hdr,
+		      sizeof(*pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_CONNECT, 0, 0, irp_fhandle.val64);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt->ioctl.in.hdr.version = ND_VERSION_1;
+	pkt->ioctl.in.hdr.connector_handle = connector_handle;
+	pkt->ioctl.in.hdr.read_limits.inbound = in_rd_limit;
+	pkt->ioctl.in.hdr.read_limits.outbound = out_rd_limit;
+	pkt->ioctl.in.hdr.cb_private_data_length = priv_data_length;
+	pkt->ioctl.in.hdr.cb_private_data_offset = offsetof(union connector_connect_ioctl, in.priv_data);
+	pkt->ioctl.in.hdr.qp_handle = qp_handle;
+
+	memcpy(&pkt->ioctl.in.hdr.phys_addr, phys_addr,
+		sizeof(struct if_physical_addr)); 
+
+	/*
+	 * Luke's code does not copy the ip address.
+	 */
+	memcpy(&pkt->ioctl.in.hdr.destination_address, dest_addr,
+		sizeof(union nd_sockaddr_inet)); 
+
+	pkt->ioctl.in.retry_cnt = 7;
+	pkt->ioctl.in.rnr_retry_cnt = 7;
+	memcpy(pkt->ioctl.in.priv_data, priv_data, priv_data_length);
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, sizeof(*pkt), (u64)pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_complete_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle,  enum ibv_qp_state *qp_state)
+{
+	struct pkt_nd_connector_connect_complete pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_COMPLETE_CONNECT, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.hdr.version = ND_VERSION_1;
+	pkt.ioctl.in.hdr.handle = connector_handle;
+	pkt.ioctl.in.rnr_nak_to = 0;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	*qp_state = pkt.ioctl.out.state; 
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_accept(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			u64 qp_handle,
+			u32 in_rd_limit, u32 out_rd_limit,
+			u32 priv_data_length, const u8 *priv_data,
+			enum ibv_qp_state *qp_state, struct hvnd_ep_obj *ep)
+{
+	struct pkt_nd_connector_accept pkt;
+	int ret;
+	union ndv_context_handle irp_fhandle;
+
+	irp_fhandle.local = ep->local_irp;
+ 
+	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
+		hvnd_error("priv_data_length=%d\n", priv_data_length);
+		return -EINVAL;
+	}
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_ACCEPT, 0, 0, irp_fhandle.val64);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.hdr.version = ND_VERSION_1;
+	pkt.ioctl.in.hdr.reserved = 0;
+	pkt.ioctl.in.hdr.read_limits.inbound = in_rd_limit;
+	pkt.ioctl.in.hdr.read_limits.outbound = out_rd_limit;
+	pkt.ioctl.in.hdr.cb_private_data_length = priv_data_length;
+
+	pkt.ioctl.in.hdr.cb_private_data_offset = offsetof(struct connector_accept_in, private_data); 
+
+	pkt.ioctl.in.hdr.connector_handle = connector_handle;
+	pkt.ioctl.in.hdr.qp_handle = qp_handle;
+
+	pkt.ioctl.in.rnr_nak_to = 0;
+	pkt.ioctl.in.rnr_retry_cnt = 7;
+ 
+
+	memcpy(pkt.ioctl.in.private_data, priv_data, priv_data_length);  
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	*qp_state = pkt.ioctl.out.state; 
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_reject(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			u32 priv_data_length, u8 *priv_data,
+			enum ibv_qp_state *qp_state)
+{
+	struct pkt_nd_connector_reject pkt;
+	int ret;
+ 
+	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
+		hvnd_error("priv_data_length=%d\n", priv_data_length);
+		return -EINVAL;
+	}
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_REJECT, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.hdr.version = ND_VERSION_1;
+	pkt.ioctl.in.hdr.reserved = 0;
+	pkt.ioctl.in.hdr.cb_private_data_length = priv_data_length;
+
+	pkt.ioctl.in.hdr.cb_private_data_offset = offsetof(struct connector_reject_in, private_data); 
+
+	pkt.ioctl.in.hdr.connector_handle = connector_handle;
+
+	memcpy(pkt.ioctl.in.private_data, priv_data, priv_data_length);  
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	*qp_state = pkt.ioctl.out.state; 
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_get_rd_limits(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			struct nd_read_limits *rd_limits)
+{
+	struct pkt_nd_connector_get_rd_limits pkt;
+	int ret;
+ 
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_GET_READ_LIMITS, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.in.version = ND_VERSION_1;
+	pkt.ioctl.in.in.reserved = 0;
+	pkt.ioctl.in.in.handle = connector_handle;
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	*rd_limits = pkt.ioctl.out.out; 
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_get_priv_data(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			u8 *priv_data)
+{
+	struct pkt_nd_connector_get_priv_data pkt;
+	int ret;
+ 
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = connector_handle;
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	memcpy(priv_data, pkt.ioctl.out, MAX_PRIVATE_DATA_LEN);
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_get_peer_addr(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			union nd_sockaddr_inet *peer_addr)
+{
+	struct pkt_nd_connector_get_peer_addr pkt;
+	int ret;
+ 
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = connector_handle;
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	memcpy(peer_addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
+	return 0;
+
+err:
+	return ret;
+}
+
+int hvnd_connector_get_local_addr(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			union nd_sockaddr_inet *addr)
+{
+	struct pkt_nd_connector_get_addr pkt;
+	int ret;
+ 
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_GET_ADDRESS, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = connector_handle;
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	memcpy(addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
+	return 0;
+
+err:
+	return ret;
+}
+
+
+int hvnd_connector_notify_disconnect(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle, struct hvnd_ep_obj *ep)
+{
+	struct pkt_nd_connector_notify_disconnect pkt;
+	int ret;
+	union ndv_context_handle irp_fhandle;
+
+	irp_fhandle .local = ep->local_irp;
+
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT, 0, 0, irp_fhandle.val64);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = connector_handle;
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+
+//ASYNCH call
+int hvnd_connector_disconnect(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle, struct hvnd_ep_obj *ep)
+{
+	struct pkt_nd_connector_disconnect pkt;
+	int ret;
+	union ndv_context_handle irp_fhandle;
+
+	irp_fhandle.local = ep->local_irp;
+ 
+
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_CONNECTOR_DISCONNECT, 0, 0, irp_fhandle.val64);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = connector_handle;
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+/*
+ * QP operations.
+ */
+int hvnd_create_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		   struct hvnd_qp *qp)
+{
+	int ret;
+	struct pkt_nd_create_qp *pkt;
+	int num_pfn, num_db_pfn;
+	int qp_pkt_size;
+	unsigned int  offset;
+	u32 ext_data_offset;
+	u32 ext_data_size;
+
+	/*
+	 * Now create QP.
+	 * First compute the number of PFNs we need to accomodate:
+	 * One each for door bell and arm_sn and pages in cq buffer.
+	 */
+	offset = offset_in_page(qp->qp_buf);
+	num_pfn = DIV_ROUND_UP(offset + qp->buf_size, PAGE_SIZE);
+
+	offset = offset_in_page(qp->db_addr);
+	num_db_pfn = DIV_ROUND_UP(offset + 4, PAGE_SIZE);
+
+	qp_pkt_size = sizeof(struct pkt_nd_create_qp) +
+		(num_pfn  * sizeof(u64));
+
+	hvnd_debug("CREATE QP, num pfns is %d\n", num_pfn);
+	hvnd_debug("CREATE QP, num DB pfns is %d\n", num_db_pfn);
+
+	pkt = kzalloc(qp_pkt_size, GFP_KERNEL);
+
+	if (!pkt)
+		return -ENOMEM;
+
+	hvnd_debug("offset of nd_create_qp is %d\n",
+		(int)offsetof(struct pkt_nd_create_qp, ioctl.input));
+
+	ext_data_offset = offsetof(struct pkt_nd_create_qp, ext_data) -
+				sizeof(struct ndv_packet_hdr_control_1);
+
+	ext_data_size = sizeof(struct create_qp_ext_data) + (num_pfn  * sizeof(u64)); 
+
+	hvnd_init_hdr(&pkt->hdr,
+		      qp_pkt_size -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_QP_CREATE,
+		      ext_data_size,
+		      ext_data_offset,
+		      0);
+			
+	/*
+	 * Now fill out the ioctl section.
+	 */
+
+	pkt->ioctl.input.hdr.version = ND_VERSION_1; 
+
+	if (qp->max_inline_data > nd_dev->query_pkt.ioctl.ad_info.inline_request_threshold)
+		qp->max_inline_data = nd_dev->query_pkt.ioctl.ad_info.inline_request_threshold;
+	pkt->ioctl.input.hdr.cb_max_inline_data = qp->max_inline_data;
+
+	hvnd_debug("pkt->ioctl.input.hdr.cb_max_inline_data=%d\n", pkt->ioctl.input.hdr.cb_max_inline_data);
+
+	pkt->ioctl.input.hdr.ce_mapping_cnt = MLX4_IB_CREATE_QP_MAPPINGS_MAX;
+	pkt->ioctl.input.hdr.cb_mapping_offset = sizeof(union create_qp_ioctl);
+
+	pkt->ioctl.input.hdr.initiator_queue_depth = qp->initiator_q_depth;
+	pkt->ioctl.input.hdr.max_initiator_request_sge = qp->initiator_request_sge;
+
+	hvnd_debug("recv cq handle is %p\n", (void *)qp->receive_cq_handle);
+	hvnd_debug("send cq handle is %p\n", (void *)qp->initiator_cq_handle);
+	hvnd_debug("pd handle is %p\n", (void *)qp->pd_handle);
+	pkt->ioctl.input.hdr.receive_cq_handle = qp->receive_cq_handle;
+	pkt->ioctl.input.hdr.initiator_cq_handle = qp->initiator_cq_handle;
+	pkt->ioctl.input.hdr.pd_handle = qp->pd_handle;
+
+
+	hvnd_debug("ce_mapping cnt is %d\n",  pkt->ioctl.input.hdr.ce_mapping_cnt);
+	hvnd_debug("cb_mapping offset is %d\n", pkt->ioctl.input.hdr.cb_mapping_offset);
+
+	pkt->ioctl.input.receive_queue_depth = qp->receive_q_depth;
+	pkt->ioctl.input.max_receive_request_sge = qp->receive_request_sge;
+
+
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.map_type = ND_MAP_MEMORY;
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.access_type = ND_MODIFY_ACCESS;
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.address = (u64)qp->qp_buf;
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.cb_length = qp->buf_size;
+
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.map_type = ND_MAP_MEMORY_COALLESCE;
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.access_type = ND_WRITE_ACCESS;
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.address = (u64)qp->db_addr;
+	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.cb_length = 4; 
+
+	pkt->mappings.qp_in.log_sq_bb_count = qp->log_sq_bb_count;
+	pkt->mappings.qp_in.log_sq_stride = qp->log_sq_stride;
+	pkt->mappings.qp_in.sq_no_prefetch = qp->sq_no_prefetch;
+
+
+	/*
+	 * Fill in the extended data.
+	 */
+
+	pkt->ext_data.cnt = 2;
+	pkt->ext_data.fields[MLX4_IB_CREATE_QP_BUF].size = sizeof(struct gpa_range) + (num_pfn * sizeof(u64));
+	pkt->ext_data.fields[MLX4_IB_CREATE_QP_BUF].offset = offsetof(struct create_qp_ext_data, qpbuf_gpa); 
+
+	pkt->ext_data.fields[MLX4_IB_CREATE_QP_DB].size = sizeof(struct qp_db_gpa); 
+	pkt->ext_data.fields[MLX4_IB_CREATE_QP_DB].offset = offsetof(struct create_qp_ext_data, db_gpa); 
+
+	/*
+	 * Fill up the gpa range for qp  buffer.
+	 */ 
+
+	pkt->ext_data.db_gpa.byte_count = 4; //KYS 8 or 16?
+	pkt->ext_data.db_gpa.byte_offset = offset_in_page(qp->db_addr);
+	user_va_init_pfn(&pkt->ext_data.db_gpa.pfn_array[0], qp->db_umem);
+
+	pkt->ext_data.qpbuf_gpa.byte_count = qp->buf_size;
+	pkt->ext_data.qpbuf_gpa.byte_offset = offset_in_page(qp->qp_buf);
+	user_va_init_pfn(&pkt->ext_data.qpbuf_gpa.pfn_array[0], qp->umem);
+
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, qp_pkt_size, (u64)pkt);
+
+	if (ret)
+		goto cr_qp_err;
+
+	/*
+	 * Copy the necessary response from the host.
+	 */
+	qp->qp_handle = pkt->ioctl.resrc_desc.handle;
+
+	qp->qpn = pkt->mappings.qp_resp.qpn;
+	qp->max_send_wr = pkt->mappings.qp_resp.max_send_wr;
+	qp->max_recv_wr = pkt->mappings.qp_resp.max_recv_wr;
+	qp->max_send_sge = pkt->mappings.qp_resp.max_send_sge;
+	qp->max_recv_sge = pkt->mappings.qp_resp.max_recv_sge;
+
+
+	hvnd_debug("qp->max_send_wr=%d max_recv_wr=%d max_send_sge=%d max_recv_sge=%d max_inline_data=%d\n", qp->max_send_wr, qp->max_recv_wr, qp->max_send_sge, qp->max_recv_sge, qp->max_inline_data);
+
+	ret = insert_handle(nd_dev, &nd_dev->qpidr, qp, qp->qpn);
+
+	if (ret)
+		goto cr_qp_err;
+
+	hvnd_debug("QP create after success qpn:%d qp:%p handle:%llu\n", qp->qpn, qp, qp->qp_handle);
+
+cr_qp_err:
+	kfree(pkt);
+	return ret;
+}
+
+int hvnd_free_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		 struct hvnd_qp *qp)
+{
+	int ret;
+	ret = hvnd_free_handle(nd_dev, uctx, qp->qp_handle, IOCTL_ND_QP_FREE);
+	if (ret == 0)
+		remove_handle(nd_dev, &nd_dev->qpidr, qp->qpn);
+	return ret;
+}
+
+int hvnd_flush_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		  struct hvnd_qp *qp)
+{
+	struct pkt_nd_flush_qp pkt;
+	int ret;
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      IOCTL_ND_QP_FLUSH, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = qp->qp_handle;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	return ret;
+}
+
+
+int hvnd_bind_nic(struct hvnd_dev *nd_dev, bool un_bind, char *ip_addr, char *mac_addr)
+{
+	int ret;
+	int pkt_type = NDV_PKT_ID1_BIND;
+
+	/*
+	 * Send the bind information over to the host.
+	 * For now, we will have a single ip and MAC address that we
+	 * will deal with. Down the road we will need to expand support
+	 * for multiple IP and MAC addresses and also deal with changing
+	 * IP addresses.
+	 */
+
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+	hvnd_debug("bind packet type is %d ID:%d\n", pkt_type, NDV_PACKET_TYPE_ID(pkt_type));
+	nd_dev->bind_pkt.pkt_hdr.packet_type = pkt_type;
+	
+	nd_dev->bind_pkt.pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_bind_1);
+	hvnd_debug("bind packet size is %d\n", (int)sizeof(struct ndv_pkt_hdr_bind_1));
+	nd_dev->bind_pkt.pkt_hdr.data_sz = 0;
+	nd_dev->bind_pkt.unbind = un_bind;
+	nd_dev->bind_pkt.ip_address.address_family = AF_INET;
+	nd_dev->bind_pkt.ip_address.ipv4.sin_family = AF_INET;
+	nd_dev->bind_pkt.ip_address.ipv4.sin_port = 0;
+	nd_dev->bind_pkt.ip_address.ipv4.sin_addr.s_addr = *(unsigned int*)ip_addr;
+
+	nd_dev->bind_pkt.phys_addr.length = ETH_ALEN;
+	memcpy(nd_dev->bind_pkt.phys_addr.addr, mac_addr, ETH_ALEN);
+
+	/*
+	 * This is the adapter handle; needs to be unique for each
+	 * MAC, ip address tuple.
+	 */
+	nd_dev->bind_pkt.guest_id = (u64)nd_dev;
+
+	ret = hvnd_send_packet(nd_dev, &nd_dev->bind_pkt,
+				sizeof(struct ndv_pkt_hdr_bind_1),
+				(u64)NULL,
+				true);
+	return ret;
+}
+
+int hvnd_init_resources(struct hvnd_dev *nd_dev)
+{
+	unsigned long mmio_sz;
+	struct resource *resrc;
+	int ret = -ENOMEM;
+
+	resrc = &iomem_resource;
+
+	mmio_sz = (nd_dev->hvdev->channel->offermsg.offer.mmio_megabytes * 1024 * 1024);
+	nd_dev->mmio_sz = mmio_sz;
+	nd_dev->mmio_resource.name = KBUILD_MODNAME;
+	nd_dev->mmio_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+
+	ret = allocate_resource(resrc, &nd_dev->mmio_resource,
+				mmio_sz, 0, -1, mmio_sz, NULL, NULL);
+
+	if (ret) {
+		hvnd_error("Unable to allocate mmio resources\n");
+		return ret;
+	}
+	hvnd_debug("MMIO start is %p\n", (void *)nd_dev->mmio_resource.start);
+
+	/*
+	 * Send the mmio information over to the host.
+	 */
+	nd_dev->resources.pkt_hdr.packet_type = NDV_PKT_ID1_INIT_RESOURCES;
+	nd_dev->resources.pkt_hdr.hdr_sz = sizeof(union ndv_packet_hdr);
+	nd_dev->resources.pkt_hdr.data_sz = 0;
+
+	nd_dev->resources.io_space_sz_mb = mmio_sz;
+	nd_dev->resources.io_space_start = nd_dev->mmio_resource.start;
+
+	ret = hvnd_send_packet(nd_dev, &nd_dev->resources,
+				sizeof(struct ndv_pkt_hdr_init_resources_1),
+				(u64)NULL,
+				true);
+	return ret;
+}
+
+int hvnd_query_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
+{
+	struct pkt_nd_query_adaptor *pkt;
+	int ret;
+	int pkt_type;
+
+	hvnd_debug("Performing Adapter query nd_dev=%p\n", nd_dev);
+
+	// check if there is a need to do query
+	if (nd_dev->query_pkt_set)
+		return 0;
+
+	// need a lock, multiple process can call this at the same time
+
+	down(&nd_dev->query_pkt_sem);
+	if (nd_dev->query_pkt_set) {
+		up(&nd_dev->query_pkt_sem);
+		return 0;
+	}
+
+	/*
+	 * Now query the adaptor.
+	 */
+
+	pkt = &nd_dev->query_pkt;
+
+	pkt_type = NDV_PKT_ID1_CONTROL;
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+
+	pkt->hdr.pkt_hdr.packet_type = pkt_type;
+	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
+	pkt->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_query_adaptor) -
+				   sizeof(struct ndv_packet_hdr_control_1);
+
+
+	pkt->hdr.file_handle.local = uctx->file_handle.local;
+	pkt->hdr.file_handle.remote = uctx->file_handle.remote;
+
+	pkt->hdr.irp_handle.val64 = 0;
+
+	pkt->hdr.io_cntrl_code = IOCTL_ND_ADAPTER_QUERY;
+	pkt->hdr.output_buf_sz = sizeof(struct nd_adap_query_ioctl);
+	pkt->hdr.input_buf_sz = sizeof(struct nd_adap_query_ioctl);
+	pkt->hdr.input_output_buf_offset = 0;
+	memset(&pkt->ioctl.ad_q, 0, sizeof(struct nd_adap_query_ioctl));
+
+	pkt->ioctl.ad_q.version = ND_VERSION_1;
+	pkt->ioctl.ad_q.info_version = ND_VERSION_2;
+	pkt->ioctl.ad_q.adapter_handle = uctx->adaptor_hdl; 
+
+	ret = hvnd_send_packet(nd_dev, pkt,
+				sizeof(struct pkt_nd_query_adaptor),
+				(unsigned long)pkt, true);
+
+	hvnd_debug("pkt->ioctl.ad_info.inline_request_threshold=%d\n", pkt->ioctl.ad_info.inline_request_threshold);
+
+	// how about host returning PENDING
+	up(&nd_dev->query_pkt_sem);
+
+	if (ret)
+		return ret;
+
+	hvnd_debug("Query Adaptor Succeeded\n");
+	nd_dev->query_pkt_set = true;
+
+	return 0;
+}
+
+
+int  hvnd_create_pd(struct hvnd_ucontext *uctx, struct hvnd_dev *nd_dev,
+		    struct hvnd_ib_pd *hvnd_pd)
+{
+	struct pkt_nd_pd_create *pkt = &uctx->pd_cr_pkt;
+	int ret;
+	int pkt_type;
+
+	hvnd_debug("Create Protection Domain\n");
+
+	pkt_type = NDV_PKT_ID1_CONTROL;
+	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
+
+	pkt->hdr.pkt_hdr.packet_type = pkt_type;
+	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
+	pkt->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_pd_create) -
+				   sizeof(struct ndv_packet_hdr_control_1);
+
+	hvnd_debug("pdcreate packet size: %d\n", (int)sizeof(struct pkt_nd_pd_create));
+	hvnd_debug("pdcreate hdr size: %d\n", (int)sizeof(struct ndv_packet_hdr_control_1));
+	hvnd_debug("pdcreate data size: %d\n", pkt->hdr.pkt_hdr.data_sz);
+
+	pkt->hdr.file_handle.local = uctx->create_pkt.handle.local; 
+	pkt->hdr.file_handle.remote = uctx->create_pkt.handle.remote; 
+
+	hvnd_debug("create pd uctx is %p\n", uctx);
+	hvnd_debug("create pd local file is %d\n", uctx->create_pkt.handle.local);
+	hvnd_debug("create pd local file is %d\n", uctx->create_pkt.handle.remote);
+
+	pkt->hdr.irp_handle.val64 = 0;
+	pkt->hdr.io_cntrl_code = IOCTL_ND_PD_CREATE;
+
+	pkt->hdr.output_buf_sz = sizeof(struct nd_create_pd_ioctl);
+	pkt->hdr.input_buf_sz =  sizeof(struct nd_create_pd_ioctl);
+	pkt->hdr.input_output_buf_offset = 0;
+
+	hvnd_debug("output/input buf size: %d\n", pkt->hdr.output_buf_sz);
+	/*
+	 * Fill the ioctl section.
+	 */
+
+	pkt->ioctl.in.version = ND_VERSION_1;
+	pkt->ioctl.in.reserved = 0;
+	pkt->ioctl.in.handle = uctx->adaptor_hdl;
+
+
+	ret = hvnd_send_packet(nd_dev, pkt,
+				sizeof(struct pkt_nd_pd_create),
+				(unsigned long)pkt, true);
+
+	if (ret)
+		return ret;
+
+	if (pkt->hdr.pkt_hdr.status != 0) {
+		hvnd_error("Create PD failed; status is %d\n",
+			pkt->hdr.pkt_hdr.status);
+		return -EINVAL;
+	}
+	if (pkt->hdr.io_status != 0) {
+		hvnd_error("Create PD failed;io status is %d\n",
+			pkt->hdr.io_status);
+		return -EINVAL;
+	}
+
+	hvnd_debug("Create PD Succeeded\n");
+
+	hvnd_debug("pd_handle is %p\n", (void *)pkt->ioctl.resp.pd_handle);
+	hvnd_debug("pdn is %d\n", (int)pkt->ioctl.resp.pdn);
+
+	hvnd_pd->pdn = pkt->ioctl.resp.pdn;
+	hvnd_pd->handle = pkt->ioctl.out_handle;
+	
+	return 0;
+}
+
+int hvnd_cancel_io(struct hvnd_ep_obj *ep_object)
+{
+	struct pkt_nd_cancel_io pkt;
+	int ret;
+	u32 ioctl;
+
+	switch (ep_object->type) {
+	case ND_LISTENER:
+		hvnd_debug("LISTENER I/O Cancelled\n");
+		ioctl = IOCTL_ND_LISTENER_CANCEL_IO;
+		break;
+	case ND_CONNECTOR:
+		hvnd_debug("CONNECTOR I/O Cancelled\n");
+		ioctl = IOCTL_ND_CONNECTOR_CANCEL_IO;
+		break;
+	case ND_MR:
+		hvnd_debug("MR I/O Cancelled\n");
+		ioctl = IOCTL_ND_MR_CANCEL_IO;
+		break;
+	case ND_CQ:
+		hvnd_debug("CQ I/O Cancelled\n");
+		ioctl = IOCTL_ND_CQ_CANCEL_IO;
+		break;
+	default:
+		hvnd_error("UNKNOWN object type\n");
+		return -EINVAL;
+	}
+ 
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      ep_object->uctx->create_pkt.handle.local,
+		      ep_object->uctx->create_pkt.handle.remote,
+		      ioctl, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = ep_object->ep_handle;
+	hvnd_debug("cancel io handle is %p\n", (void *)ep_object->ep_handle);
+ 
+	ret = hvnd_send_ioctl_pkt(ep_object->nd_dev, &pkt.hdr,
+				sizeof(pkt),
+				(u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	/*
+	 * Now that we have cancelled all I/Os,
+	 */
+
+	return 0;
+
+err:
+	hvnd_error("cancel I/O operation failed\n");
+	return ret;
+}
+
+
+int hvnd_free_handle(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle, u32 ioctl)
+{
+	struct pkt_nd_free_handle pkt;
+	int ret;
+ 
+	hvnd_debug("Freeing handle ioctl is %s; handle is %p\n",
+		hvnd_get_op_name(ioctl), (void *)handle);
+
+	hvnd_debug("uctx is %p\n", uctx);
+	hvnd_debug("nd_dev is %p\n", nd_dev);
+
+	memset(&pkt, 0, sizeof(pkt)); //KYS try to avoid having to zero everything
+	hvnd_init_hdr(&pkt.hdr,
+		      sizeof(pkt) -
+		      sizeof(struct ndv_packet_hdr_control_1),
+		      uctx->create_pkt.handle.local,
+		      uctx->create_pkt.handle.remote,
+		      ioctl, 0, 0, 0);
+
+	/*
+	 * Now fill in the ioctl section.
+	 */
+	pkt.ioctl.in.version = ND_VERSION_1;
+	pkt.ioctl.in.reserved = 0;
+	pkt.ioctl.in.handle = handle;
+ 
+	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
+
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	hvnd_error("%s: ret=%d\n", __func__, ret);
+	return ret;
+}
+
+int hvnd_negotiate_version(struct hvnd_dev *nd_dev)
+{
+	union ndv_packet_init *pkt = &nd_dev->init_pkt;
+	int ret;
+
+	nd_dev->negotiated_version = NDV_PROTOCOL_VAERSION_INVALID;
+
+	pkt->packet_type = NDV_PACKET_TYPE_INIT;
+	pkt->protocol_version = NDV_PROTOCOL_VERSION_CURRENT;
+	pkt->flags = 0; //KYS are the flags 0?
+
+	ret = hvnd_send_packet(nd_dev, pkt, 
+			       sizeof(union ndv_packet_init), (u64)NULL, true);
+
+	return ret;
+} 
+
+void hvnd_callback(void *context)
+{
+	struct hv_device *dev = context;
+	struct hvnd_dev *nd_dev = hv_get_drvdata(dev);
+	int copy_sz = 0;
+	struct ndv_packet_hdr_control_1 *ctrl_hdr;
+	union ndv_packet_init *pkt_init;
+	u32 recvlen;
+	u32 local_irp;
+	u64 requestid;
+	u32 *pkt_type;
+	u32 pkt_id;
+	struct hvnd_ep_obj *ep_object;
+	struct incoming_pkt *incoming_pkt; /* Used only for asynch calls */
+	char *incoming_pkt_start;
+	struct vmpacket_descriptor *desc;
+	int status;
+	struct hvnd_cookie *hvnd_cookie;
+	unsigned long flags;
+
+	vmbus_recvpacket_raw(dev->channel, hvnd_recv_buffer,
+			 (PAGE_SIZE * 4), &recvlen, &requestid);
+
+	if (recvlen <= 0)
+		return;
+
+	desc = (struct vmpacket_descriptor *)hvnd_recv_buffer;
+	incoming_pkt_start = hvnd_recv_buffer + (desc->offset8 << 3);
+	recvlen -= desc->offset8 << 3;
+
+	pkt_type = (u32 *)incoming_pkt_start;
+	pkt_id = *pkt_type;
+	if (pkt_id != NDV_PACKET_TYPE_INIT)
+		pkt_id = NDV_PACKET_TYPE_ID(pkt_id);
+
+	switch (pkt_id) {
+	case NDV_PACKET_TYPE_INIT:
+		/*
+		 * Host is responding to our init packet.
+		 */
+		pkt_init = (union ndv_packet_init *)incoming_pkt_start;
+		nd_dev->negotiated_version = pkt_init->protocol_version;
+		copy_sz = 0;
+		break;
+
+	case NDV_PKT_ID1_INIT_RESOURCES:
+		copy_sz = 0;
+		break;
+
+	case NDV_PKT_ID1_BIND:
+		nd_dev->bind_pkt.pkt_hdr.status = ((union ndv_packet_hdr *) incoming_pkt_start)->status;
+		copy_sz = 0;
+		break;
+
+	case NDV_PKT_ID1_COMPLETE:
+		ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt_start;
+		status = ctrl_hdr->io_status;
+
+		local_irp = ctrl_hdr->irp_handle.local;
+		ep_object = (struct hvnd_ep_obj *)map_irp_to_ctx(nd_dev, local_irp);
+
+		if (!ep_object) {
+			hvnd_error("irp could not be mapped; irp is %d ioctl is %s", 
+				local_irp, hvnd_get_op_name(ctrl_hdr->io_cntrl_code));
+			goto complete;
+		}
+
+		if (ctrl_hdr->io_cntrl_code != IOCTL_ND_CQ_NOTIFY)
+			hvnd_debug("completion packet; iostatus is %x, ioctl is %s", ctrl_hdr->io_status, hvnd_get_op_name(ctrl_hdr->io_cntrl_code)); 
+
+		switch(ctrl_hdr->io_cntrl_code) {
+
+		case IOCTL_ND_CQ_NOTIFY: 
+			hvnd_process_cq_event_complete(ep_object, status);
+
+			ep_del_work_pending(ep_object);
+			goto complete;
+
+		case IOCTL_ND_CONNECTOR_ACCEPT:
+
+			hvnd_process_connector_accept(ep_object, status);
+
+			ep_del_work_pending(ep_object);
+			goto complete;
+
+		case IOCTL_ND_CONNECTOR_DISCONNECT:
+			hvnd_debug("disconnected: ep opj is %p; status: %d\n", ep_object, status);
+			hvnd_process_disconnect(ep_object, status);
+
+			ep_del_work_pending(ep_object);
+			goto complete;
+
+		default:
+			break;
+		}
+
+		/*
+		 * This is the completion notification;
+		 * the IRP cookie is the state through which
+		 * we will invoke the callback.
+		 */
+		incoming_pkt = (struct incoming_pkt *) kmalloc(recvlen + sizeof(struct incoming_pkt), GFP_ATOMIC);
+		if (incoming_pkt == NULL) {
+			hvnd_error("Could not alloc memory in callback\n");
+			ep_del_work_pending(ep_object);
+			goto complete;
+		}
+		memcpy(incoming_pkt->pkt, incoming_pkt_start, recvlen);
+
+		spin_lock_irqsave(&ep_object->incoming_pkt_list_lock, flags);
+		list_add_tail(&incoming_pkt->list_entry, &ep_object->incoming_pkt_list);
+		spin_unlock_irqrestore(&ep_object->incoming_pkt_list_lock, flags);
+
+		schedule_work(&ep_object->wrk.work);
+
+		goto complete;
+
+	case NDV_PKT_ID1_CREATE:
+		copy_sz = sizeof(struct ndv_pkt_hdr_create_1);	
+		break;
+
+	case NDV_PKT_ID1_CLEANUP:
+		copy_sz = sizeof(struct ndv_pkt_hdr_cleanup_1);
+		break;
+
+	case NDV_PKT_ID1_CONTROL:
+		ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt_start;
+		status = ctrl_hdr->io_status;
+
+		if (ctrl_hdr->io_cntrl_code != IOCTL_ND_CQ_NOTIFY)
+			hvnd_debug("packet; iostatus is %x ioctl is %s", 
+				ctrl_hdr->io_status, hvnd_get_op_name(ctrl_hdr->io_cntrl_code)); 
+
+		switch (ctrl_hdr->io_cntrl_code) {
+
+		case IOCTL_ND_PROVIDER_INIT:
+			copy_sz = sizeof(struct pkt_nd_provider_ioctl);
+			break;
+
+		case IOCTL_ND_PROVIDER_BIND_FILE:
+			copy_sz = sizeof(struct pkt_nd_provider_ioctl);
+			break;
+
+		case IOCTL_ND_ADAPTER_OPEN:
+			copy_sz = sizeof(struct pkt_nd_open_adapter);
+			break;
+
+		case IOCTL_ND_ADAPTER_CLOSE:
+			copy_sz = sizeof(struct pkt_nd_free_handle);
+			break;
+
+		case IOCTL_ND_ADAPTER_QUERY: 
+			copy_sz = sizeof(struct pkt_nd_query_adaptor);
+			break;
+
+		case IOCTL_ND_PD_CREATE:
+			copy_sz = sizeof(struct pkt_nd_pd_create);
+			break;
+
+		case IOCTL_ND_PD_FREE:
+			copy_sz = sizeof(struct pkt_nd_free_handle);
+			break;
+
+		case IOCTL_ND_CQ_CREATE:
+			copy_sz = sizeof(struct pkt_nd_create_cq);
+			break;
+
+		case IOCTL_ND_CQ_FREE:
+			copy_sz = sizeof(struct pkt_nd_free_cq);
+			break;
+
+		case IOCTL_ND_CQ_NOTIFY: //FIXME check ep stop state
+			local_irp = ctrl_hdr->irp_handle.local;
+			ep_object = (struct hvnd_ep_obj *)map_irp_to_ctx(nd_dev, local_irp);
+			if (!ep_object) {
+				hvnd_error("irp could not be mapped\n");
+				goto complete;
+				return;
+			}	
+			copy_sz = sizeof(struct pkt_nd_notify_cq);
+			hvnd_process_cq_event_pending(ep_object, status);
+			goto complete;
+			return;
+
+		case IOCTL_ND_LISTENER_CREATE: 
+			copy_sz = sizeof(struct pkt_nd_cr_listener);
+			break;
+
+		case IOCTL_ND_LISTENER_FREE: 
+			copy_sz = sizeof(struct pkt_nd_free_listener);
+			break;
+
+		case IOCTL_ND_QP_FREE: 
+			copy_sz = sizeof(struct pkt_nd_free_handle);
+			break;
+
+		case IOCTL_ND_CONNECTOR_CANCEL_IO: 
+		case IOCTL_ND_MR_CANCEL_IO:
+		case IOCTL_ND_CQ_CANCEL_IO:
+		case IOCTL_ND_LISTENER_CANCEL_IO: 
+			copy_sz = sizeof(struct pkt_nd_cancel_io);
+			break;
+
+		case IOCTL_ND_LISTENER_BIND: 
+			copy_sz = sizeof(struct pkt_nd_bind_listener);
+			break;
+
+		case IOCTL_ND_LISTENER_LISTEN: 
+			copy_sz = sizeof(struct pkt_nd_listen_listener);
+			break;
+
+		case IOCTL_ND_LISTENER_GET_ADDRESS: 
+			copy_sz = sizeof(struct pkt_nd_get_addr_listener);
+			break;
+
+		case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST: 
+			copy_sz = sizeof(struct pkt_nd_get_connection_listener);
+			goto complete; // non-block
+
+		case IOCTL_ND_CONNECTOR_CREATE: 
+			copy_sz = sizeof(struct pkt_nd_cr_connector);
+			break;
+
+		case IOCTL_ND_CONNECTOR_FREE: 
+			copy_sz = sizeof(struct pkt_nd_free_connector);
+			break;
+
+		case IOCTL_ND_CONNECTOR_BIND: 
+			copy_sz = sizeof(struct pkt_nd_free_connector);
+			break;
+
+		case IOCTL_ND_CONNECTOR_CONNECT: //KYS: ALERT: ASYNCH Operation 
+			copy_sz = sizeof(struct pkt_nd_connector_connect);
+			goto complete; //non-block
+
+		case IOCTL_ND_CONNECTOR_COMPLETE_CONNECT: 
+			copy_sz = sizeof(struct pkt_nd_connector_connect_complete);
+			break;
+
+		case IOCTL_ND_CONNECTOR_ACCEPT: //KYS: ALERT: ASYNCH Operation 
+			copy_sz = sizeof(struct pkt_nd_connector_accept);
+			goto complete; //non-block
+
+		case IOCTL_ND_CONNECTOR_REJECT: 
+			copy_sz = sizeof(struct pkt_nd_connector_reject);
+			break;
+
+		case IOCTL_ND_CONNECTOR_GET_READ_LIMITS: 
+			copy_sz = sizeof(struct pkt_nd_connector_get_rd_limits);
+			break;
+
+		case IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA: 
+			copy_sz = sizeof(struct pkt_nd_connector_get_priv_data);
+			break;
+
+		case IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS: 
+			copy_sz = sizeof(struct pkt_nd_connector_get_peer_addr);
+			break;
+
+		case IOCTL_ND_CONNECTOR_GET_ADDRESS: 
+			copy_sz = sizeof(struct pkt_nd_connector_get_addr);
+			break;
+
+		case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT: //KYS: ALERT: ASYNCH Operation 
+			copy_sz = sizeof(struct pkt_nd_connector_notify_disconnect);
+			goto complete; //non-block
+
+		case IOCTL_ND_CONNECTOR_DISCONNECT: //KYS: ALERT: ASYNCH Operation 
+			hvnd_debug("IOCTL_ND_CONNECTOR_DISCONNECT\n");
+			copy_sz = sizeof(struct pkt_nd_connector_notify_disconnect);
+			goto complete; // non-block
+
+		case IOCTL_ND_QP_CREATE: 
+			copy_sz = sizeof(struct pkt_nd_create_qp);
+			break;
+
+		case IOCTL_ND_MR_CREATE: 
+			copy_sz = sizeof(struct pkt_nd_create_mr);
+			break;
+
+		case IOCTL_ND_MR_FREE: 
+			copy_sz = sizeof(struct pkt_nd_free_handle);
+			break;
+
+		case IOCTL_ND_MR_REGISTER: 
+			copy_sz = sizeof(struct pkt_nd_register_mr);
+			break;
+
+		case IOCTL_ND_MR_DEREGISTER:
+			copy_sz = sizeof(struct pkt_nd_deregister_mr);
+			break;
+
+		case IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST:
+			copy_sz = sizeof(struct pkt_query_addr_list);
+			break;
+
+		case IOCTL_ND_QP_FLUSH:
+			copy_sz = sizeof(struct pkt_nd_flush_qp);
+			break;
+
+		default:
+			hvnd_warn("Got unknown ioctl: %d\n",
+				ctrl_hdr->io_cntrl_code); 
+			copy_sz = 0;
+			break;
+		}
+
+		break;
+	default:
+		hvnd_warn("Got an unknown packet type %d\n", *pkt_type);
+		break;
+	}
+
+	hvnd_cookie = (struct hvnd_cookie *)requestid;
+	memcpy(hvnd_cookie->pkt, incoming_pkt_start, copy_sz);
+	complete(&hvnd_cookie->host_event);
+
+complete:
+	/* send out ioctl completion patcket */
+	if(desc->flags & VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED) {
+		int retry = 5;
+		while (true) {
+			int ret;
+			ret = vmbus_sendpacket(dev->channel, NULL, 0, requestid, VM_PKT_COMP, 0);
+			if(ret == 0) {
+				break;
+			} else if (ret == -EAGAIN) {
+				if(--retry == 0) {
+					hvnd_error("give up retrying send completion packet\n");
+					break;
+				}
+				hvnd_warn("retrying send completion packet\n");
+				udelay(100);
+			} else {
+				hvnd_error("unable to send completion packet ret=%d\n", ret);
+				break;
+			}
+		}
+	}
+
+}

drivers/infiniband/hw/vmbus-rdma/vmbus_rdma.h

+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ *   K. Y. Srinivasan <kys@microsoft.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * Bug fixes/enhancements: Long Li <longli@microsoft.com>
+ */
+
+
+#ifndef _VMBUS_RDMA_H
+#define _VMBUS_RDMA_H
+
+
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <rdma/ib_verbs.h>
+#include <linux/idr.h>
+#include <linux/if_ether.h>
+
+/* NetworkDirect version Numbers.
+ */
+#define ND_VERSION_1    0x1
+#define ND_VERSION_2    0x20000
+
+#ifndef NDVER
+#define NDVER      ND_VERSION_2
+#endif
+
+#define ND_ADAPTER_FLAG_IN_ORDER_DMA_SUPPORTED              0x00000001
+#define ND_ADAPTER_FLAG_CQ_INTERRUPT_MODERATION_SUPPORTED   0x00000004
+#define ND_ADAPTER_FLAG_MULTI_ENGINE_SUPPORTED              0x00000008
+#define ND_ADAPTER_FLAG_CQ_RESIZE_SUPPORTED                 0x00000100
+#define ND_ADAPTER_FLAG_LOOPBACK_CONNECTIONS_SUPPORTED      0x00010000
+
+#define ND_CQ_NOTIFY_ERRORS                                 0
+#define ND_CQ_NOTIFY_ANY                                    1
+#define ND_CQ_NOTIFY_SOLICITED                              2
+
+#define ND_MR_FLAG_ALLOW_LOCAL_WRITE                        0x00000001
+#define ND_MR_FLAG_ALLOW_REMOTE_READ                        0x00000002
+#define ND_MR_FLAG_ALLOW_REMOTE_WRITE                       0x00000005
+#define ND_MR_FLAG_RDMA_READ_SINK                           0x00000008
+#define ND_MR_FLAG_DO_NOT_SECURE_VM                         0x80000000
+
+#define ND_OP_FLAG_SILENT_SUCCESS                           0x00000001
+#define ND_OP_FLAG_READ_FENCE                               0x00000002
+#define ND_OP_FLAG_SEND_AND_SOLICIT_EVENT                   0x00000004
+#define ND_OP_FLAG_ALLOW_READ                               0x00000008
+#define ND_OP_FLAG_ALLOW_WRITE                              0x00000010
+
+#if NDVER >= ND_VERSION_2
+#define ND_OP_FLAG_INLINE                                   0x00000020
+#endif
+
+#define ND_AF_INET6	23
+#define IF_MAX_ADDR_LENGTH 32
+
+struct group_affinity {
+	u64 mask; //KYS: usually 0
+	u16 group; // KYS usually -1
+	u16 reserved[3];
+};
+
+struct if_physical_addr {
+	u16 length;
+	u8 addr[IF_MAX_ADDR_LENGTH];
+};
+
+struct adapter_info_v2 {
+	u32 info_version;
+	u16 vendor_id;
+	u16 device_id;
+	u64 adapter_id;
+	size_t max_registration_size;
+	size_t max_window_size;
+	u32 max_initiator_sge;
+	u32 max_recv_sge;
+	u32 max_read_sge;
+	u32 max_transfer_length;
+	u32 max_inline_data_size;
+	u32 max_inbound_read_limit;
+	u32 max_outbound_read_limit;
+	u32 max_recv_q_depth;
+	u32 max_initiator_q_depth;
+	u32 max_shared_recv_q_depth;
+	u32 max_completion_q_depth;
+	u32 inline_request_threshold;
+	u32 large_request_threshold;
+	u32 max_caller_data;
+	u32 max_callee_data;
+	u32 adapter_flags;
+} __packed;
+
+struct nd2_adapter_info_32 { //KYS: Check what this is
+	u32 info_version;
+	u16 vendor_id;
+	u16 devic_id;
+	u64 adapter_id;
+	u32 max_registration_size;
+	u32 max_window_size;
+	u32 max_initiator_sge;
+	u32 max_recv_sge;
+	u32 max_read_sge;
+	u32 max_transfer_length;
+	u32 max_inline_data_size;
+	u32 max_inbound_read_limit;
+	u32 max_outbound_read_limit;
+	u32 max_recv_q_depth;
+	u32 max_initiator_q_depth;
+	u32 max_shared_recv_q_depth;
+	u32 max_completion_q_depth;
+	u32 inline_request_threshold;
+	u32 large_request_threshold;
+	u32 max_caller_data;
+	u32 max_callee_data;
+	u32 adapter_flags;
+} __packed;
+
+enum nd2_request_type {
+	ND2_RT_RECEIVE,
+	ND2_RT_SEND,
+	ND2_RT_BIND,
+	ND2_RT_INVALIDATE,
+	ND2_RT_READ,
+	ND2_RT_WRITE
+};
+
+struct nd2_result {
+	u32 status;
+	u32 bytes_transferred;
+	void *qp_ctx;
+	void *request_ctx;
+	enum nd2_request_type request_type;
+} __packed;
+
+struct nd2_sge {
+	void *buffer;
+	u32 buffer_length;
+	u32 mr_token;
+} __packed;
+
+/*
+ * The communication with the host via ioctls using VMBUS
+ * as the transport.
+ */
+
+#define ND_IOCTL_VERSION    1
+
+enum nd_mapping_type {
+	ND_MAP_IOSPACE,
+	ND_MAP_MEMORY,
+	ND_MAP_MEMORY_COALLESCE,
+	ND_MAP_PAGES,
+	ND_MAP_PAGES_COALLESCE,
+	ND_UNMAP_IOSPACE,
+	ND_UNMAP_MEMORY,
+	ND_MAX_MAP_TYPE
+};
+
+enum nd_caching_type {
+	ND_NON_CACHED = 0,
+	ND_CACHED,
+	ND_WRITE_COMBINED,
+	ND_MAX_CACHE_TYPE
+};
+
+enum nd_aceess_type {
+	ND_READ_ACCESS = 0,
+	ND_WRITE_ACCESS,
+	ND_MODIFY_ACCESS
+};
+
+struct nd_map_io_space {
+	enum nd_mapping_type map_type;
+	enum nd_caching_type cache_type;
+	u32 cb_length;
+};
+
+struct nd_map_memory {
+	enum nd_mapping_type map_type;
+	enum nd_aceess_type access_type;
+	u64 address;
+	u32 cb_length;
+};
+
+struct nd_mapping_id {
+	enum nd_mapping_type map_type;
+	u64 id;
+};
+
+struct ndk_map_pages {
+	struct nd_map_memory header;
+	u32 page_offset;
+};
+
+union nd_mapping {
+	enum nd_mapping_type map_type;
+	struct nd_map_io_space map_io_space;
+	struct nd_map_memory map_memory;
+	struct nd_mapping_id mapping_id;
+	struct ndk_map_pages map_pages;
+};
+
+struct nd_mapping_result {
+	u64 id;
+	u64 info;
+};
+
+struct nd_resource_descriptor {
+	u64 handle;
+	u32 ce_mapping_results;
+	u32 cb_mapping_results_offset;
+};
+
+struct nd_handle {
+	u32 version;
+	u32 reserved;
+	u64 handle;
+};
+
+union nd_sockaddr_inet {
+	struct sockaddr_in ipv4;
+	struct sockaddr_in6 ipv6;
+	u16 address_family; //KYS how is this supposed to work?
+};
+
+struct nd_address_element {
+	union nd_sockaddr_inet addr;
+	char mac_addr[ETH_ALEN];
+};
+
+struct nd_resolve_address {
+	u32 version;
+	u32 reserved;
+	union nd_sockaddr_inet address;
+};
+
+struct nd_open_adapter {
+	u32 version;
+	u32 reserved;
+	u32 ce_mapping_cnt;
+	u32 cb_mapping_offset;
+	u64 adapter_id;
+};
+
+struct nd_adapter_query {
+	u32 version;
+	u32 info_version;
+	u64 adapter_handle;
+};
+
+struct nd_create_cq {
+	u32 version;
+	u32 queue_depth;
+	u32 ce_mapping_cnt;
+	u32 cb_mapping_offset;
+	u64 adapter_handle;
+	struct group_affinity affinity;
+};
+
+struct nd_create_srq {
+	u32 version;
+	u32 queue_depth;
+	u32 ce_mapping_cnt;
+	u32 cb_mapping_offset;
+	u32 max_request_sge;
+	u32 notify_threshold;
+	u64 pd_handle;
+	struct group_affinity affinity;
+};
+
+struct nd_create_qp_hdr {
+	u32 version;
+	u32 cb_max_inline_data;
+	u32 ce_mapping_cnt;
+	u32 cb_mapping_offset; //KYS: what is this prefix - ce/cb
+	u32 initiator_queue_depth;
+	u32 max_initiator_request_sge;
+	u64 receive_cq_handle;
+	u64 initiator_cq_handle;
+	u64 pd_handle;
+};
+
+struct nd_create_qp {
+	struct nd_create_qp_hdr hdr;
+	u32 receive_queue_depth;
+	u32 max_receive_request_sge;
+};
+
+struct nd_create_qp_with_srq {
+	struct nd_create_qp_hdr header;
+	u64 srq_handle;
+};
+
+struct nd_srq_modify {
+	u32 version;
+	u32 queue_depth;
+	u32 ce_mapping_cnt;
+	u32 cb_mapping_offset;
+	u32 notify_threshold;
+	u32 reserved;
+	u64 srq_handle;
+};
+
+struct nd_cq_modify {
+	u32 version;
+	u32 queue_depth;
+	u32 ce_mapping_count;
+	u32 cb_mappings_offset;
+	u64 cq_handle;
+};
+
+struct nd_cq_notify {
+	u32 version;
+	u32 type;
+	u64 cq_handle;
+};
+
+struct nd_mr_register_hdr {
+	u32 version;
+	u32 flags;
+	u64 cb_length;
+	u64 target_addr;
+	u64 mr_handle;
+};
+
+struct nd_mr_register {
+	struct nd_mr_register_hdr header;
+	u64 address;
+};
+
+struct nd_bind {
+	u32 version;
+	u32 reserved;
+	u64 handle;
+	union nd_sockaddr_inet address;
+};
+
+struct nd_read_limits {
+	u32 inbound;
+	u32 outbound;
+};
+
+struct nd_connect {
+	u32 version;
+	u32 reserved;
+	struct nd_read_limits read_limits;
+	u32 cb_private_data_length;
+	u32 cb_private_data_offset;
+	u64 connector_handle;
+	u64 qp_handle;
+	union nd_sockaddr_inet destination_address;
+	struct if_physical_addr phys_addr;	
+};
+
+struct nd_accept {
+	u32 version;
+	u32 reserved;
+	struct nd_read_limits read_limits;
+	u32 cb_private_data_length;
+	u32 cb_private_data_offset;
+	u64 connector_handle;
+	u64 qp_handle;
+};
+
+struct nd_reject {
+	u32 version;
+	u32 reserved;
+	u32 cb_private_data_length;
+	u32 cb_private_data_offset;
+	u64 connector_handle;
+};
+
+struct nd_listen {
+	u32 version;
+	u32 back_log;
+	u64 listener_handle;
+};
+
+struct nd_get_connection_request {
+	u32 version;
+	u32 reserved;
+	u64 listener_handle;
+	u64 connector_handle;
+};
+
+enum ndv_mmio_type {
+	ND_PARTITION_KERNEL_VIRTUAL,
+	ND_PARTITION_SYSTEM_PHYSICAL,
+	ND_PARTITION_GUEST_PHYSICAL,
+	ND_MAXIMUM_MMIO_TYPE
+};
+
+struct ndv_resolve_adapter_id {
+	u32 version;
+	struct if_physical_addr phys_addr;	
+};
+
+struct ndv_partition_create {
+	u32 version;
+	enum ndv_mmio_type mmio_type;
+	u64 adapter_id;
+	u64 xmit_cap;
+};
+
+struct ndv_partition_bind_luid {
+	u32 version;
+	u32 reserved;
+	u64 partition_handle;
+	struct if_physical_addr phys_addr;	
+	//IF_LUID luid; //KYS?
+};
+
+struct ndv_partition_bind_address {
+	u32 version;
+	u32 reserved;
+	u64 partition_handle;
+	union nd_sockaddr_inet address;
+	struct if_physical_addr guest_phys_addr;	
+	struct if_physical_addr phys_addr;	
+};
+
+struct ndk_mr_register {
+	struct nd_mr_register_hdr hdr;
+	u32 cb_logical_page_addresses_offset;
+};
+
+struct ndk_bind {
+	struct nd_bind hdr;
+	u64 authentication_id;
+	bool is_admin;
+};
+
+#define FDN 0x12
+#define METHOD_BUFFERED 0x0
+#define FAA 0x0
+
+#define CTL_CODE( DeviceType, Function, Method, Access ) ( \
+	((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method) \
+)
+
+#define ND_FUNCTION(r_, i_)    ((r_) << 6 | (i_))
+#define IOCTL_ND(r_, i_) \
+		 CTL_CODE( FDN, ND_FUNCTION((r_), (i_)), METHOD_BUFFERED, FAA )
+
+#define ND_FUNCTION_FROM_CTL_CODE(ctrlCode_)     ((ctrlCode_ >> 2) & 0xFFF)
+#define ND_RESOURCE_FROM_CTL_CODE(ctrlCode_)     (ND_FUNCTION_FROM_CTL_CODE(ctrlCode_) >> 6)
+#define ND_OPERATION_FROM_CTRL_CODE(ctrlCode_)   (ND_FUNCTION_FROM_CTL_CODE(ctrlCode_) & 0x3F)
+
+#define ND_DOS_DEVICE_NAME L"\\DosDevices\\Global\\NetworkDirect"
+#define ND_WIN32_DEVICE_NAME L"\\\\.\\NetworkDirect"
+
+enum nd_resource_type {
+	ND_PROVIDER = 0,
+	ND_ADAPTER,
+	ND_PD,
+	ND_CQ,
+	ND_MR,
+	ND_MW,
+	ND_SRQ,
+	ND_CONNECTOR,
+	ND_LISTENER,
+	ND_QP,
+	ND_VIRTUAL_PARTITION,
+	ND_RESOURCE_TYPE_COUNT
+};
+
+#define ND_OPERATION_COUNT 14
+
+#define IOCTL_ND_PROVIDER(i_)		IOCTL_ND(ND_PROVIDER, i_)
+#define IOCTL_ND_ADAPTER(i_)		IOCTL_ND(ND_ADAPTER, i_)
+#define IOCTL_ND_PD(i_)			IOCTL_ND(ND_PD, i_)
+#define IOCTL_ND_CQ(i_)			IOCTL_ND(ND_CQ, i_)
+#define IOCTL_ND_MR(i_)			IOCTL_ND(ND_MR, i_)
+#define IOCTL_ND_MW(i_)			IOCTL_ND(ND_MW, i_)
+#define IOCTL_ND_SRQ(i_)		IOCTL_ND(ND_SRQ, i_)
+#define IOCTL_ND_CONNECTOR(i_)		IOCTL_ND(ND_CONNECTOR, i_)
+#define IOCTL_ND_LISTENER(i_)		IOCTL_ND(ND_LISTENER, i_)
+#define IOCTL_ND_QP(i_)			IOCTL_ND(ND_QP, i_)
+#define IOCTL_ND_VIRTUAL_PARTITION(i_)	IOCTL_ND(ND_VIRTUAL_PARTITION, i_)
+
+/* Provider IOCTLs */
+#define IOCTL_ND_PROVIDER_INIT				IOCTL_ND_PROVIDER( 0 )
+#define IOCTL_ND_PROVIDER_BIND_FILE			IOCTL_ND_PROVIDER( 1 )
+#define IOCTL_ND_PROVIDER_QUERY_ADDRESS_LIST		IOCTL_ND_PROVIDER( 2 )
+#define IOCTL_ND_PROVIDER_RESOLVE_ADDRESS		IOCTL_ND_PROVIDER( 3 )
+#define IOCTL_ND_PROVIDER_MAX_OPERATION			4
+
+/* Adapter IOCTLs */
+#define IOCTL_ND_ADAPTER_OPEN				IOCTL_ND_ADAPTER( 0 )
+#define IOCTL_ND_ADAPTER_CLOSE				IOCTL_ND_ADAPTER( 1 )
+#define IOCTL_ND_ADAPTER_QUERY				IOCTL_ND_ADAPTER( 2 )
+#define IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST		IOCTL_ND_ADAPTER( 3 )
+#define IOCTL_ND_ADAPTER_MAX_OPERATION			4
+
+/* Protection Domain IOCTLs */
+#define IOCTL_ND_PD_CREATE				IOCTL_ND_PD( 0 )
+#define IOCTL_ND_PD_FREE				IOCTL_ND_PD( 1 )
+#define IOCTL_ND_PD_MAX_OPERATION			2
+
+/* Completion Queue IOCTLs */
+#define IOCTL_ND_CQ_CREATE				IOCTL_ND_CQ( 0 )
+#define IOCTL_ND_CQ_FREE				IOCTL_ND_CQ( 1 )
+#define IOCTL_ND_CQ_CANCEL_IO				IOCTL_ND_CQ( 2 )
+#define IOCTL_ND_CQ_GET_AFFINITY			IOCTL_ND_CQ( 3 )
+#define IOCTL_ND_CQ_MODIFY				IOCTL_ND_CQ( 4 )
+#define IOCTL_ND_CQ_NOTIFY				IOCTL_ND_CQ( 5 )
+#define IOCTL_ND_CQ_MAX_OPERATION			6
+
+/* Memory Region IOCTLs */
+#define IOCTL_ND_MR_CREATE				IOCTL_ND_MR( 0 )
+#define IOCTL_ND_MR_FREE				IOCTL_ND_MR( 1 )
+#define IOCTL_ND_MR_CANCEL_IO				IOCTL_ND_MR( 2 )
+#define IOCTL_ND_MR_REGISTER				IOCTL_ND_MR( 3 )
+#define IOCTL_ND_MR_DEREGISTER				IOCTL_ND_MR( 4 )
+#define IOCTL_NDK_MR_REGISTER				IOCTL_ND_MR( 5 )
+#define IOCTL_ND_MR_MAX_OPERATION			6
+
+/* Memory Window IOCTLs */
+#define IOCTL_ND_MW_CREATE				IOCTL_ND_MW( 0 )
+#define IOCTL_ND_MW_FREE				IOCTL_ND_MW( 1 )
+#define IOCTL_ND_MW_MAX_OPERATION			2
+
+/* Shared Receive Queue IOCTLs */
+#define IOCTL_ND_SRQ_CREATE				IOCTL_ND_SRQ( 0 )
+#define IOCTL_ND_SRQ_FREE				IOCTL_ND_SRQ( 1 )
+#define IOCTL_ND_SRQ_CANCEL_IO				IOCTL_ND_SRQ( 2 )
+#define IOCTL_ND_SRQ_GET_AFFINITY			IOCTL_ND_SRQ( 3 )
+#define IOCTL_ND_SRQ_MODIFY				IOCTL_ND_SRQ( 4 )
+#define IOCTL_ND_SRQ_NOTIFY				IOCTL_ND_SRQ( 5 )
+#define IOCTL_ND_SRQ_MAX_OPERATION			6
+
+/* Connector IOCTLs */
+#define IOCTL_ND_CONNECTOR_CREATE			IOCTL_ND_CONNECTOR( 0 )
+#define IOCTL_ND_CONNECTOR_FREE				IOCTL_ND_CONNECTOR( 1 )
+#define IOCTL_ND_CONNECTOR_CANCEL_IO			IOCTL_ND_CONNECTOR( 2 )
+#define IOCTL_ND_CONNECTOR_BIND				IOCTL_ND_CONNECTOR( 3 )
+#define IOCTL_ND_CONNECTOR_CONNECT			IOCTL_ND_CONNECTOR( 4 )
+#define IOCTL_ND_CONNECTOR_COMPLETE_CONNECT		IOCTL_ND_CONNECTOR( 5 )
+#define IOCTL_ND_CONNECTOR_ACCEPT			IOCTL_ND_CONNECTOR( 6 )
+#define IOCTL_ND_CONNECTOR_REJECT			IOCTL_ND_CONNECTOR( 7 )
+#define IOCTL_ND_CONNECTOR_GET_READ_LIMITS		IOCTL_ND_CONNECTOR( 8 )
+#define IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA		IOCTL_ND_CONNECTOR( 9 )
+#define IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS		IOCTL_ND_CONNECTOR( 10 )
+#define IOCTL_ND_CONNECTOR_GET_ADDRESS			IOCTL_ND_CONNECTOR( 11 )
+#define IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT		IOCTL_ND_CONNECTOR( 12 )
+#define IOCTL_ND_CONNECTOR_DISCONNECT			IOCTL_ND_CONNECTOR( 13 )
+#define IOCTL_ND_CONNECTOR_MAX_OPERATION		14
+
+/* Listener IOCTLs */
+#define IOCTL_ND_LISTENER_CREATE			IOCTL_ND_LISTENER( 0 )
+#define IOCTL_ND_LISTENER_FREE				IOCTL_ND_LISTENER( 1 )
+#define IOCTL_ND_LISTENER_CANCEL_IO			IOCTL_ND_LISTENER( 2 )
+#define IOCTL_ND_LISTENER_BIND				IOCTL_ND_LISTENER( 3 )
+#define IOCTL_ND_LISTENER_LISTEN			IOCTL_ND_LISTENER( 4 )
+#define IOCTL_ND_LISTENER_GET_ADDRESS			IOCTL_ND_LISTENER( 5 )
+#define IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST	IOCTL_ND_LISTENER( 6 )
+#define IOCTL_ND_LISTENER_MAX_OPERATION			7
+
+/* Queue Pair IOCTLs */
+#define IOCTL_ND_QP_CREATE				IOCTL_ND_QP( 0 )
+#define IOCTL_ND_QP_CREATE_WITH_SRQ			IOCTL_ND_QP( 1 )
+#define IOCTL_ND_QP_FREE				IOCTL_ND_QP( 2 )
+#define IOCTL_ND_QP_FLUSH				IOCTL_ND_QP( 3 )
+#define IOCTL_ND_QP_MAX_OPERATION			4
+
+/* Kernel-mode only IOCTLs (IRP_MJ_INTERNAL_DEVICE_CONTROL) */
+#define IOCTL_NDV_PARTITION_RESOLVE_ADAPTER_ID	IOCTL_ND_VIRTUAL_PARTITION( 0 )
+#define IOCTL_NDV_PARTITION_CREATE		IOCTL_ND_VIRTUAL_PARTITION( 1 )
+#define IOCTL_NDV_PARTITION_FREE		IOCTL_ND_VIRTUAL_PARTITION( 2 )
+#define IOCTL_NDV_PARTITION_BIND		IOCTL_ND_VIRTUAL_PARTITION( 3 )
+#define IOCTL_NDV_PARTITION_UNBIND		IOCTL_ND_VIRTUAL_PARTITION( 4 )
+#define IOCTL_NDV_PARTITION_BIND_LUID		IOCTL_ND_VIRTUAL_PARTITION( 5 )
+#define IOCTL_NDV_PARTITION_MAX_OPERATION	6
+
+
+#define MB_SHIFT 20
+
+
+/* Ringbuffer size for the channel */
+#define NDV_NUM_PAGES_IN_RING_BUFFER 64
+
+#define NDV_MAX_PACKETS_PER_RECEIVE 8
+
+#define NDV_MAX_PACKET_COUNT    16304
+
+#define NDV_MAX_NUM_OUTSTANDING_RECEIVED_PACKETS (16304)
+#define NDV_MAX_HANDLE_TABLE_SIZE (16304)
+#define NDV_HOST_MAX_HANDLE_TABLE_SIZE (NDV_MAX_HANDLE_TABLE_SIZE * 16)
+
+
+#define NDV_MAX_MAPPINGS 4
+
+#define NDV_STATE_NONE			0x00000000
+#define NDV_STATE_CREATED		0x00000001
+#define NDV_STATE_CONNECTING		0x00000002
+#define NDV_STATE_INITIALIZING		0x00000003
+#define NDV_STATE_OPERATIONAL		0xEFFFFFFF
+#define NDV_STATE_FAILED		0xFFFFFFFF
+
+
+#define NDV_MAX_PRIVATE_DATA_SIZE 64
+#define NDV_MAX_IOCTL_SIZE        256
+
+/* max size of buffer for vector of ND_MAPPING */
+#define NDV_MAX_MAPPING_BUFFER_SIZE \
+	(NDV_MAX_MAPPINGS * sizeof(union nd_mapping))
+
+/* max expected ioctl buffer size from users */
+#define NDV_MAX_IOCTL_BUFFER_SIZE \
+	(NDV_MAX_IOCTL_SIZE + \
+	NDV_MAX_MAPPING_BUFFER_SIZE + \
+	NDV_MAX_PRIVATE_DATA_SIZE)
+
+/*  max PFN array for inline buffers */
+#define NDV_MAX_INLINE_PFN_ARRAY_LENGTH 32
+
+/* Field header size for inline buffer */
+#define NDV_MAX_MAPPING_PACKET_FILED_BUFFER_SIZE \
+	(NDV_MAX_MAPPINGS * sizeof(NDV_PACKET_FIELD))
+
+/* Max for a single field */
+
+#define NDV_MAX_SINGLE_MAPPING_FIELD  ( sizeof(GPA_RANGE) + \
+	(sizeof(PFN_NUMBER) * NDV_MAX_INLINE_PFN_ARRAY_LENGTH))
+
+/* Max for all inine data */
+
+#define NDV_MAX_MAPPING_DATA_SIZE (NDV_MAX_MAPPING_PACKET_FILED_BUFFER_SIZE + \
+	(NDV_MAX_MAPPINGS * NDV_MAX_SINGLE_MAPPING_FIELD))
+
+
+#define NDV_MAX_PACKET_HEADER_SIZE 256
+
+#define NDV_MAX_PACKET_SIZE    (NDV_MAX_PACKET_HEADER_SIZE + \
+				NDV_MAX_IOCTL_BUFFER_SIZE + \
+				NDV_MAX_MAPPING_DATA_SIZE)
+
+/* Well known message type INIT is defined for the channel
+ * not for the protocol.
+ */
+
+#define NDV_PACKET_TYPE_INIT  0xFFFFFFFF
+
+/* Invalid protocol version to to identify uninitialized channels */
+
+#define NDV_PROTOCOL_VERSION_INVALID  0xFFFFFFFF
+
+/* Flags that control the bahavior of packet handling */
+
+enum ndv_packet_options {
+	NDV_PACKET_OPTION_NONE = 0x00,
+
+	/* Indicates that the ExternalDataMdl parameter is expectected to be
+	 * passed and must be handled in the reciever.  This call must be
+	 * handled specially to ensure that the MDL can be created correctly.
+	 */
+	NDV_PACKET_OPTION_EXTERNAL_DATA = 0x01,
+
+	/* Inicates that the reciever must execution the handler at passive. */
+	NDV_PACKET_OPTIONS_REQUIRES_PASSIVE = 0x02,
+
+	/* Indicates that the sender does not expect and is not waiting for a
+	 * response packet.
+	 */
+	NDV_PACKET_OPTIONS_POST = 0x04,
+};
+
+#define NDV_PACKET_TYPE(id_, opt_) \
+	(((opt_)<<24) | (id_))
+
+#define NDV_PACKET_TYPE_OPTIONS(type_) \
+	(((type_) >> 24) & 0xFF)
+
+#define NDV_PACKET_TYPE_ID(type_) \
+	((type_) & 0xFFFFFF) \
+
+#define NDV_ADD_PACKET_OPTION(type_, opt_) \
+	(type_) |= (opt_<<24)
+
+/* The header value sent on all packets */
+union ndv_packet_hdr {
+
+	struct {
+		/* The type of packet.
+		 * This value should be created with the NDV_PACKET_TYPE macro
+		 * to include all packet options within the packet type.
+		 */
+		u32 packet_type;
+		/* The size of the entire fixed message structure that exists
+		 * before the data. This must be >= sizeof(NDV_PACKET_HEADER)
+		 */
+		u32 hdr_sz;
+		/* This size of the data that follows the message
+		 * data_sz + hdr_sz size gives the total size of
+		 * the buffer that is used.
+		 */
+		u32 data_sz;
+		/* The status code used to indicate success or failure.
+		 * It is only used in completions and during responses.
+		 */
+		u32 status; //KYS: NTSTATUS?
+	};
+
+	u64 padding[2]; //KYS: why?
+}; 
+
+
+/* The core INIT packet.  This message is defined in the channel
+ * not in the protocol.  This message should never change size
+ * or behavior, as it could impact compatibility in the future.
+ * This packet is used to negotiate the protocol version, so chaning
+ * this size could break backward compat.
+ */
+
+union ndv_packet_init {
+	struct {
+		u32 packet_type;
+		u32 protocol_version;
+		u32 flags;
+	};
+	u64 padding[2];
+}  __packed;
+
+#define NDV_PACKET_INIT_SIZE 16
+
+/* Data packing flags used for accessing the dynamic fields inside a packet */
+#define NDV_DATA_PACKING_2 0x1
+#define NDV_DATA_PACKING_4 0x3
+#define NDV_DATA_PACKING_8 0x7
+
+
+#define NDV_PROTOCOL_VERSION_1        0x0100
+#define NDV_PROTOCOL_VERSION_CURRENT  NDV_PROTOCOL_VERSION_1
+#define NDV_PROTOCOL_VERSION_COUNT    1
+
+struct ndv_pkt_field {
+	u32 size;
+	u32 offset;
+};
+
+enum ndv_pkt_id {
+	NDV_PKT_UNKNOWN = 0,
+	/* Version 1 Message ID's */
+	NDV_PKT_ID1_BIND,
+	NDV_PKT_ID1_CREATE,
+	NDV_PKT_ID1_CLEANUP,
+	NDV_PKT_ID1_CANCEL,
+	NDV_PKT_ID1_CONTROL,
+	NDV_PKT_ID1_COMPLETE,
+	NDV_PKT_ID1_INIT_RESOURCES,
+};
+
+/* The guest will send this as the first messages just after init
+ * The resources are reserved per channel.
+ */
+
+struct ndv_pkt_hdr_init_resources_1 {
+
+	union ndv_packet_hdr    pkt_hdr;
+	u16 io_space_sz_mb;
+	u64 io_space_start;
+
+};
+
+
+
+/* The guest will send this packet to the host after channel init
+ * to query support for the adapters that are registered.
+ */
+
+struct ndv_pkt_hdr_bind_1 {
+	union ndv_packet_hdr    pkt_hdr;
+	bool unbind;
+	union nd_sockaddr_inet ip_address;
+	struct if_physical_addr phys_addr;	
+	u64 guest_id;
+}; 
+
+union ndv_context_handle {
+	u64 val64;
+	struct {
+		u32 local;
+		u32 remote;
+	};
+};
+
+struct ndv_pkt_hdr_create_1 {
+	union ndv_packet_hdr    pkt_hdr;
+
+	/* Identifies the object used to track this file handle on both
+	 * the guest and the host.  When sent from the guest, it will contain
+	 * the guest handle.  On success, the host will populate and return
+	 * it's handle value as well.
+	 */
+
+	union ndv_context_handle handle;
+
+	/* The parameters sent to the CreateFile call */
+	u32  access_mask;
+	u32 open_options;
+
+	u16 file_attributes; //KYS: This field must be 64 bit aligned
+
+	u16 share_access; //KYS
+
+	u32 kys_padding; //KYS
+
+	u16  ea_length; //KYS; needs to be 64 bit aligned; what is ea length - unused
+};
+
+
+struct ndv_pkt_hdr_cleanup_1 {
+	union ndv_packet_hdr    pkt_hdr;
+
+	/* Identifies the object used to track this file handle on both
+	 * the guest and the host.  When sent from the guest, it will contain
+	 * the both the guest and host handle values.  The host will use this
+	 * value to cleanup its resource, then update its portion of the handle
+	 * to NDV_HANDLE_NULL before returning the data back to the guest.
+	 */ 
+	union ndv_context_handle handle;
+};
+
+struct ndv_pkt_hdr_cancel_1 {
+	union ndv_packet_hdr    pkt_hdr;
+	union ndv_context_handle file_handle;
+	union ndv_context_handle irp_handle;
+};
+
+struct ndv_bind_port_info {
+	//LUID authentication_id; //KYS: LUID?
+	bool is_admin;
+}; 
+
+struct ndv_extended_data_flds {
+	union {
+		u32 field_count;
+		u64 padding;
+	};
+
+	//struct ndv_pkt_field fields[ANYSIZE_ARRAY]; //KYS?
+};
+
+
+struct ndv_packet_hdr_control_1 {
+	union ndv_packet_hdr    pkt_hdr;
+	/* Identifies the object used to track this file handle on both
+	 * the guest and the host.  This should always have both guest
+	 * and host handle values inside it.
+	 */
+
+	union ndv_context_handle file_handle;
+ 
+	/* The handle information for the allocated irp context object.
+	 * This information is used when the host/guest starts the cancelation
+	 */
+	union ndv_context_handle irp_handle;
+
+	/* The input data describing in the IO control parameters */
+
+	u32 io_cntrl_code;
+	u32 output_buf_sz;
+	u32 input_buf_sz;
+	u32 input_output_buf_offset;
+
+	/* These are used in the return message to indicate the status of the IO
+	 * operation and the amount of data written to the output buffer.
+	 */
+	u32 io_status; //KYS: NTSTATUS?
+	u32 bytes_returned;
+
+	/* This contains the field information for additional data that is sent
+	 * with the packet that is IOCTL specific.
+	 */
+
+	struct ndv_pkt_field extended_data;
+};
+
+/*
+ * Include MLX specific defines.
+ */
+
+#include "mx_abi.h"
+
+/* Driver specific state.
+ */
+
+/*
+ * We need to have host open a file; some
+ * Windows constants for open.
+ */
+#define STANDARD_RIGHTS_ALL   (0x001F0000L)
+#define FILE_ATTRIBUTE_NORMAL (0x80)
+#define FILE_SHARE_READ	 (0x00000001)
+#define FILE_SHARE_WRITE (0x00000002)
+#define FILE_SHARE_DELETE (0x00000004)
+#define FILE_FLAG_OVERLAPPED (0x40000000) 
+#define FILE_SHARE_ALL (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE)
+#define CREATE_ALWAYS (2)
+#define OPEN_EXISTING (3)
+
+#define RTL_NUMBER_OF(_x) \
+		sizeof(_x)/sizeof(_x[0])
+/*
+ * The context structure tracks the open state.
+ */
+
+/*
+ * Packet layout for open adaptor.
+ */
+
+/*
+ * Packet for querying the address list.
+ */
+
+union query_addr_list_ioctl {
+	struct nd_handle in;
+	union nd_sockaddr_inet out[16]; //KYS a max of 16 addresses
+};
+
+struct pkt_query_addr_list {
+	struct ndv_packet_hdr_control_1 hdr;
+	union query_addr_list_ioctl ioctl;
+	unsigned long activity_id;
+};
+
+
+struct pkt_fld {
+	u32 size;
+	u32 offset;
+};
+
+struct fld_data {
+	union {
+		u64 padding;
+	};
+};
+
+struct extended_data_oad {
+	union { 
+		u32 cnt;
+		u64 padding; 
+	};
+	/* offsets are from start of extended data struct
+	 * and should start on 8 byte boundary
+	 */
+	struct pkt_fld fields[IBV_GET_CONTEXT_MAPPING_MAX];
+};
+
+union oad_ioctl {
+	struct nd_open_adapter input;
+	struct nd_resource_descriptor resrc_desc;
+};
+
+union oad_mappings {
+	struct ibv_get_context_req ctx_input;
+	struct ibv_get_context_resp ctx_output;
+};
+
+struct pkt_nd_open_adapter {
+	struct ndv_packet_hdr_control_1 hdr;
+
+	union oad_ioctl ioctl;
+	union oad_mappings mappings;
+
+	/*
+	 * Extended data.
+	 */
+	struct extended_data_oad ext_data;
+};
+
+/*
+ * Create CQ IOCTL.
+ */
+
+struct cq_db_gpa {
+	u32 byte_count;
+	u32 byte_offset;
+	u64 pfn_array[2];
+};
+
+struct cq_sn_gpa {
+	u32 byte_count;
+	u32 byte_offset;
+	u64 pfn_array[2];
+};
+
+struct create_cq_ext_data {
+	union { 
+		u32 cnt;
+		u64 padding; 
+	};
+	/* offsets are from start of extended data struct
+	 * and should start on 8 byte boundary
+	 */
+	struct pkt_fld fields[MLX4_IB_CREATE_CQ_MAPPING_MAX];
+	struct cq_db_gpa db_gpa;
+	struct cq_sn_gpa sn_gpa;
+	struct gpa_range cqbuf_gpa;
+};
+
+union create_cq_ioctl {
+	struct nd_create_cq input;
+	struct nd_resource_descriptor resrc_desc;
+};
+
+union create_cq_mappings {
+	struct ibv_create_cq cq_in;
+	struct ibv_create_cq_resp cq_resp;
+};
+
+struct pkt_nd_create_cq {
+	struct ndv_packet_hdr_control_1 hdr;
+
+	union create_cq_ioctl ioctl;
+	union create_cq_mappings mappings;
+
+	/*
+	 * Extended data.
+	 */
+	struct create_cq_ext_data ext_data;
+};
+
+/*
+ * IOCTL to free CQ.
+ */
+struct free_cq_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_free_cq {
+	struct ndv_packet_hdr_control_1 hdr;
+
+	struct  free_cq_ioctl ioctl;
+};
+
+
+/*
+ * IOCTL to QUERY CQ - CQ NOTIFY
+ */
+
+struct notify_cq_ioctl {
+	struct nd_cq_notify in;
+};
+
+struct pkt_nd_notify_cq {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct notify_cq_ioctl ioctl;
+};
+
+/*
+ * IOCTL to Create a listner
+ */
+
+struct nd_ep_create {
+	struct nd_handle hdr;
+	bool to_semantics;
+	unsigned long activity_id;
+};
+
+union listener_cr_ioctl {
+	struct nd_ep_create in;
+	u64  out;
+};
+
+struct pkt_nd_cr_listener {
+	struct ndv_packet_hdr_control_1 hdr;
+	union listener_cr_ioctl ioctl;
+};
+
+/*
+ * IOCTL to free listener.
+ */
+
+struct listener_free_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_free_listener {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct listener_free_ioctl ioctl;
+};
+
+/*
+ * IOCTL for listener cancel IO.
+ */
+struct listener_cancelio_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_cancelio_listener {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct listener_cancelio_ioctl ioctl;
+};
+
+/*
+ * IOCTL for LISTENER BIND
+ */
+
+union listener_bind_ioctl {
+	struct ndk_bind  in;
+};
+
+struct pkt_nd_bind_listener {
+	struct ndv_packet_hdr_control_1 hdr;
+	union listener_bind_ioctl ioctl;
+};
+
+/*
+ * After the listener is bound, enable
+ * listening.
+ */
+
+union listener_listen_ioctl {
+	struct nd_listen  in;
+};
+
+struct pkt_nd_listen_listener {
+	struct ndv_packet_hdr_control_1 hdr;
+	union listener_listen_ioctl ioctl;
+};
+
+/*
+ * IOCTL for getting the adddress from listener.
+ *
+ */
+
+union listener_get_addr_ioctl {
+	struct nd_handle  in;
+	union nd_sockaddr_inet out;
+};
+
+struct pkt_nd_get_addr_listener {
+	struct ndv_packet_hdr_control_1 hdr;
+	union listener_get_addr_ioctl ioctl;
+};
+
+/*
+ * IOCTL to get a connection from a listener.
+ */
+
+union listener_get_connection_ioctl {
+	struct nd_get_connection_request  in;
+	union nd_sockaddr_inet out;
+};
+
+struct pkt_nd_get_connection_listener {
+	struct ndv_packet_hdr_control_1 hdr;
+	union listener_get_connection_ioctl ioctl;
+};
+
+
+/*
+ * Connector IOCTLs
+ */
+
+/*
+ * IOCTL to create connector.
+ */
+
+union connector_cr_ioctl { //KYS should this be a union or struct?
+	struct nd_ep_create in;
+	u64  out;
+};
+
+struct pkt_nd_cr_connector {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_cr_ioctl ioctl; //KYS: union or struct
+};
+
+/*
+ * IOCTL to free connector.
+ */
+ 
+struct connector_free_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_free_connector {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct connector_free_ioctl ioctl;
+};
+
+/*
+ * IOCTL to cancel I/O on a connector.
+ */
+
+struct connector_cancelio_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_cancelio_connector {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct connector_cancelio_ioctl ioctl;
+};
+
+/*
+ * IOCTL to Bind an address to the connector.
+ */
+
+union connector_bind_ioctl {
+	struct ndk_bind  in;
+};
+
+struct pkt_nd_bind_connector {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_bind_ioctl ioctl;
+};
+
+/*
+ * IOCTL to connect a connector.
+ */
+
+struct connector_connect_in {
+	struct nd_connect hdr;
+	u8 retry_cnt;
+	u8 rnr_retry_cnt;
+	u8 priv_data[56];
+	unsigned long activity_id;
+};
+
+union connector_connect_ioctl {
+	struct connector_connect_in in;
+};
+
+struct pkt_nd_connector_connect {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_connect_ioctl ioctl;
+};
+
+/*
+ * IOCTL for connector complete connect
+ */
+
+struct complete_connect_in {
+	struct nd_handle hdr;
+	u8 rnr_nak_to;
+	unsigned long activity_id;
+};
+
+struct complete_connect_out {
+	enum ibv_qp_state state;
+};
+
+union connector_complete_connect_ioctl {
+	struct complete_connect_in in;
+	struct complete_connect_out out;
+};
+
+struct pkt_nd_connector_connect_complete {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_complete_connect_ioctl ioctl;
+};
+
+
+#define MAX_PRIVATE_DATA_LEN	148
+
+/*
+ * IOCTL for connector accept.
+ */
+
+struct connector_accept_in {
+	struct nd_accept hdr;
+	u8 rnr_retry_cnt;
+	u8 rnr_nak_to;
+	u8 private_data[MAX_PRIVATE_DATA_LEN];
+	unsigned long activity_id;
+};
+
+struct connector_accept_out {
+	enum ibv_qp_state state;
+};
+
+union connector_accept_ioctl {
+	struct connector_accept_in in;
+	struct connector_accept_out out;
+};
+
+struct pkt_nd_connector_accept {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_accept_ioctl ioctl;
+};
+
+/*
+ * IOCTL for connector to reject a connection.
+ */
+
+struct connector_reject_in {
+	struct nd_reject hdr;
+	u8 private_data[MAX_PRIVATE_DATA_LEN];
+};
+
+struct connector_reject_out {
+	enum ibv_qp_state state;
+};
+
+union connector_reject_ioctl {
+	struct connector_reject_in in;
+	struct connector_reject_out out;
+};
+
+struct pkt_nd_connector_reject {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_reject_ioctl ioctl;
+};
+
+/*
+ * IOCTL to get connector read limits.
+ */
+
+struct connector_get_rd_limits_in {
+	struct nd_handle in;
+};
+
+struct connector_get_rd_limits_out {
+	struct nd_read_limits out;
+};
+
+union connector_get_rd_limits_ioctl {
+	struct connector_get_rd_limits_in in;
+	struct connector_get_rd_limits_out out;
+};
+
+struct pkt_nd_connector_get_rd_limits {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_get_rd_limits_ioctl ioctl;
+};
+
+/*
+ * IOCTL to get connector private data.
+ */
+union connector_get_priv_data_ioctl {
+	struct nd_handle in;
+	u8 out[MAX_PRIVATE_DATA_LEN];
+};
+
+struct pkt_nd_connector_get_priv_data {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_get_priv_data_ioctl ioctl;
+};
+
+
+/*
+ * IOCTL get peer address.
+ */
+
+union connector_get_peer_addr_ioctl {
+	struct nd_handle in;
+	union nd_sockaddr_inet out;
+};
+
+struct pkt_nd_connector_get_peer_addr {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_get_peer_addr_ioctl ioctl;
+};
+
+/*
+ * IOCTL to get connector address.
+ */
+
+union connector_get_addr_ioctl {
+	struct nd_handle in;
+	union nd_sockaddr_inet out;
+};
+
+struct pkt_nd_connector_get_addr {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_get_addr_ioctl ioctl;
+};
+
+/*
+ * IOCTL for disconnect notification.
+ */
+
+union connector_notify_disconnect_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_connector_notify_disconnect {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_notify_disconnect_ioctl ioctl;
+};
+
+union connector_disconnect_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_connector_disconnect {
+	struct ndv_packet_hdr_control_1 hdr;
+	union connector_notify_disconnect_ioctl ioctl;
+};
+
+/*
+ * IOCTLs for QP operations.
+ */
+
+/*
+ * Create qp IOCTL.
+ */
+
+struct qp_db_gpa {
+	u32 byte_count;
+	u32 byte_offset;
+	u64 pfn_array[1];
+};
+
+struct create_qp_ext_data {
+	union { 
+		u32 cnt;
+		u64 padding; 
+	};
+	/* offsets are from start of extended data struct
+	 * and should start on 8 byte boundary
+	 */
+	struct pkt_fld fields[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
+	struct qp_db_gpa db_gpa;
+	struct gpa_range qpbuf_gpa;
+};
+
+union create_qp_ioctl {
+	struct nd_create_qp input;
+	struct nd_resource_descriptor resrc_desc;
+};
+
+union create_qp_mappings {
+	struct ibv_create_qp qp_in;
+	struct ibv_create_qp_resp qp_resp;
+};
+
+struct pkt_nd_create_qp {
+	struct ndv_packet_hdr_control_1 hdr;
+
+	union create_qp_ioctl ioctl;
+	union create_qp_mappings mappings;
+
+	/*
+	 * Extended data.
+	 */
+	struct create_qp_ext_data ext_data;
+};
+
+/*
+ * IOCTL to flush a QP.
+ */
+struct flush_qp_ioctl {
+	struct nd_handle in;
+	enum ibv_qp_state out;
+};
+
+struct pkt_nd_flush_qp {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct flush_qp_ioctl ioctl;
+};
+
+/*
+ * Memory Region IOCTLS
+ */
+union create_mr_ioctl {
+	struct nd_handle in;
+	u64 out;
+};
+
+struct pkt_nd_create_mr {
+	struct ndv_packet_hdr_control_1 hdr;
+	union create_mr_ioctl ioctl;
+};
+
+struct mr_out {
+	u32 lkey;
+	u32 rkey;
+	unsigned long activity_id;
+};
+
+
+union register_mr_ioctl {
+	struct nd_mr_register in;
+	struct mr_out out; 
+};
+
+struct pkt_nd_register_mr {
+	struct ndv_packet_hdr_control_1 hdr;
+	union  register_mr_ioctl ioctl;
+};
+
+struct deregister_mr_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_deregister_mr {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct deregister_mr_ioctl ioctl;
+};
+
+/*
+ * IOCTL to disconnect connector
+ */
+
+/*
+ * Create PD IOCTL.
+ */
+struct nd_create_pd_ioctl {
+	union {
+		struct nd_handle in;
+		u64 out_handle;
+	};
+	struct ibv_alloc_pd_resp resp;
+};
+
+struct pkt_nd_pd_create {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct nd_create_pd_ioctl ioctl;
+};
+
+/*
+ * Free Handle. Check the layout with Luke.
+ *
+ */
+struct free_handle_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_free_handle {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct free_handle_ioctl ioctl;
+};
+
+/*
+ * Cancel I/O.
+ */
+
+struct cancel_io_ioctl {
+	struct nd_handle in;
+};
+
+struct pkt_nd_cancel_io {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct cancel_io_ioctl ioctl;
+};
+
+/*
+ * Connector states:
+ */
+
+enum connector_state {
+	HVND_CON_INCOMING,
+	HVND_CON_INCOMING_ESTABLISHED,
+	HVND_CON_INCOMING_REJECTED,
+	HVND_CON_OUTGOING_REQUEST
+};
+
+
+/*
+ * Adaptor query IOCTL.
+ */
+struct nd_adap_query_ioctl {
+	union {
+		struct nd_adapter_query ad_q;
+		struct adapter_info_v2 ad_info;
+	};
+};
+
+struct pkt_nd_query_adaptor {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct nd_adap_query_ioctl ioctl;
+};
+
+struct  nd_ioctl {
+	union {
+		struct nd_handle handle;
+		u8 raw_buffer[NDV_MAX_IOCTL_BUFFER_SIZE];
+	};
+};
+
+struct pkt_nd_provider_ioctl {
+	struct ndv_packet_hdr_control_1 hdr;
+	struct nd_ioctl ioctl;
+};
+
+struct hvnd_ib_pd {
+	struct ib_pd ibpd;
+	u32	pdn;
+	u64	handle;
+};
+
+struct hvnd_work {
+	struct work_struct work;
+	void *callback_arg;
+};
+
+struct hvnd_disconnect_work {
+	struct work_struct work;
+	int status;
+	void *callback_arg;
+};
+
+/*
+struct hvnd_delayed_work {
+	struct delayed_work work;
+	void *callback_arg;
+};
+*/
+
+enum hvnd_cm_state {
+	hvnd_cm_idle = 0,
+	hvnd_cm_connect_reply_sent, 	//active
+	hvnd_cm_connect_reply_refused,
+	hvnd_cm_connect_received,	//active
+	hvnd_cm_connect_request_sent,	//passive
+	hvnd_cm_accept_sent,
+	hvnd_cm_close_sent,
+	hvnd_cm_established_sent,
+};
+
+struct incoming_pkt {
+	struct list_head list_entry;
+	char pkt[0];
+};
+
+struct hvnd_ep_obj {
+/*
+	spinlock_t ep_lk;
+	bool to_be_destroyed;
+	bool io_outstanding;
+
+	wait_queue_head_t wait;
+	bool stopped;
+	atomic_t process_refcnt; // how many NDV_PKT_ID1_COMPLETE packets we are currently processing
+*/
+	bool stopping;
+	wait_queue_head_t wait_pending;
+	atomic_t nr_requests_pending;
+
+	enum nd_resource_type type;
+	enum connector_state state; //KYS need to look at locking
+	struct iw_cm_id *cm_id;
+	enum hvnd_cm_state cm_state;
+	struct completion block_event;
+	struct completion disconnect_event;
+	struct completion connector_accept_event;
+	int connector_accept_status;
+	u64 ep_handle;
+	spinlock_t      incoming_pkt_list_lock;
+	struct list_head incoming_pkt_list;
+	struct hvnd_ep_obj *parent;
+	struct hvnd_dev *nd_dev;
+	struct hvnd_ucontext *uctx;
+	struct hvnd_work wrk;
+	struct hvnd_cq *cq;
+	u8 ord;
+	u8 ird;
+	char priv_data[MAX_PRIVATE_DATA_LEN];
+	bool incoming;
+	atomic_t disconnect_notified;
+	u64 outstanding_handle;
+	u32 local_irp;
+	struct hvnd_ep_obj *outstanding_ep;
+	struct pkt_nd_connector_connect connector_connect_pkt;
+	int connector_connect_retry;
+};
+
+struct hvnd_ucontext {
+	struct ib_ucontext      ibucontext;
+	struct list_head listentry;
+	struct ndv_pkt_hdr_create_1 create_pkt;
+	struct ndv_pkt_hdr_create_1 create_pkt_ovl; /* Overlap handle */
+	struct pkt_nd_provider_ioctl pr_init_pkt;
+	union ndv_context_handle file_handle;
+	union ndv_context_handle file_handle_ovl;
+
+	struct pkt_nd_open_adapter o_adap_pkt;
+
+	u64 adaptor_hdl;
+
+	/*
+	 * Protection domain state.
+	 */
+	struct pkt_nd_pd_create pd_cr_pkt;
+
+	u64 uar_base;
+	u64 bf_base;
+	u32 bf_buf_size;
+	u32 bf_offset;
+	u32 cqe_size;
+	u32 max_qp_wr;
+	u32 max_sge;
+	u32 max_cqe;
+	u32 num_qps;
+
+	/*
+	 * State to manage dorbell pages:
+	 */
+	struct list_head        db_page_list;
+	struct mutex            db_page_mutex;
+
+	atomic_t refcnt;
+
+};
+
+struct hvnd_dev {
+	struct ib_device ibdev;
+	struct hv_device *hvdev;
+	u32 device_cap_flags;
+	unsigned char nports;
+	bool ib_active;
+
+	/* State to manage interaction with the host.
+	 */
+
+	spinlock_t uctxt_lk;
+	struct list_head listentry;
+	
+	unsigned long mmio_sz;
+	unsigned long mmio_start_addr;
+	struct resource mmio_resource;
+	void *mmio_virt;
+
+	unsigned long negotiated_version;
+	union ndv_packet_init init_pkt;
+	struct ndv_pkt_hdr_init_resources_1 resources; 
+	struct ndv_pkt_hdr_bind_1 bind_pkt;
+
+	struct ndv_pkt_hdr_create_1 global_create_pkt;
+	union ndv_context_handle global_file_handle;
+
+	struct semaphore query_pkt_sem;
+	bool query_pkt_set;
+	struct pkt_nd_query_adaptor query_pkt;
+
+	/*
+	 * ID tables.
+	 */
+	spinlock_t id_lock;
+
+	struct idr cqidr;
+	struct idr qpidr;
+	struct idr mmidr;
+	struct idr irpidr;
+	struct idr uctxidr;
+	atomic_t open_cnt;
+
+	char ip_addr[4];
+	char mac_addr[6];
+	struct completion addr_set;
+	int bind_complete;
+	struct mutex bind_mutex;
+};
+
+struct hvnd_cq {
+	struct ib_cq ibcq;
+	void *cq_buf;
+	void *db_addr;
+	u32 arm_sn;
+	u32 entries;
+
+	u32 cqn;
+	u32 cqe;
+	u64 cq_handle;
+
+	struct ib_umem         *umem;
+	struct ib_umem	*db_umem;
+	struct mlx4_ib_user_db_page user_db_page;
+	struct hvnd_ucontext *uctx;
+	struct hvnd_ep_obj ep_object; //KYS need to clean this up; have a cq irp state
+	bool monitor;
+	bool upcall_pending;
+};
+
+struct hvnd_qp {
+	struct ib_qp ibqp;
+	void *qp_buf;
+	void *db_addr;
+	u32  buf_size;
+	u8   port;
+	struct hvnd_dev *nd_dev;
+
+	__u8    log_sq_bb_count;
+	__u8    log_sq_stride;
+	__u8    sq_no_prefetch;
+
+	int rq_wqe_cnt;
+	int rq_wqe_shift;
+	int rq_max_gs;
+
+	int sq_wqe_cnt;
+	int sq_wqe_shift;
+	int sq_max_gs;
+
+	u32 max_inline_data;
+
+	u32 initiator_q_depth;
+	u32 initiator_request_sge;
+
+	u32 receive_q_depth;
+	u32 receive_request_sge;
+
+	struct hvnd_cq *recv_cq;
+	struct hvnd_cq *send_cq;
+
+	u64 receive_cq_handle;
+	u64 initiator_cq_handle;
+	u64 pd_handle;
+
+	u64 qp_handle;
+	u32 qpn;
+	u32 max_send_wr;
+	u32 max_recv_wr;
+	u32 max_send_sge;
+	u32 max_recv_sge;
+
+	struct ib_umem         *umem;
+	struct ib_umem	*db_umem;
+	struct mlx4_ib_user_db_page user_db_page;
+	struct hvnd_ucontext *uctx;
+	struct iw_cm_id *cm_id;
+
+	/*
+	 * Current QP state; need to look at locking.
+	 * XXXKYS
+	 */
+	enum ib_qp_state qp_state;
+	bool cq_notify;
+	wait_queue_head_t wait;
+	atomic_t refcnt;
+	struct hvnd_ep_obj *connector;
+};
+
+struct hvnd_mr {
+	struct ib_mr ibmr;
+	struct hvnd_ib_pd *pd;
+	struct ib_umem *umem;
+	u64 start;
+	u64 length;
+	u64 virt;
+	int acc;
+	u64 mr_handle;
+	u32 mr_lkey;
+	u32 mr_rkey;
+};
+
+struct hvnd_cookie {
+	struct completion host_event;
+	void *pkt;
+};
+
+/*
+ * Definitions to retrieve the IP address.
+ */
+
+#define HVND_CURRENT_VERSION 0
+
+struct hvnd_ipaddr_tuple {
+	char mac_address[ETH_ALEN];
+	struct sockaddr addr;
+};
+
+struct hvnd_msg {
+	int status;
+	struct hvnd_ipaddr_tuple ip_tuple;
+};
+
+static inline struct hvnd_ib_pd *to_nd_pd(struct ib_pd *pd)
+{
+	return container_of(pd, struct hvnd_ib_pd, ibpd);
+}
+
+static inline struct hvnd_dev *to_nd_dev(struct ib_device *ibdev)
+{
+	return container_of(ibdev, struct hvnd_dev, ibdev);
+}
+
+static inline struct hvnd_cq *to_nd_cq(struct ib_cq *ibcq)
+{
+	return container_of(ibcq, struct hvnd_cq, ibcq);
+}
+
+static inline struct hvnd_qp *to_nd_qp(struct ib_qp *ibqp)
+{
+	return container_of(ibqp, struct hvnd_qp, ibqp);
+}
+
+static inline struct hvnd_ucontext *to_nd_context(struct ib_ucontext *ibucontext)
+{
+	return container_of(ibucontext, struct hvnd_ucontext, ibucontext);
+}
+
+static inline struct hvnd_ucontext *get_uctx_from_pd(struct ib_pd *pd)
+{
+	return to_nd_context(pd->uobject->context);
+}
+
+static inline struct hvnd_mr *to_nd_mr(struct ib_mr *ibmr)
+{
+	return container_of(ibmr, struct hvnd_mr, ibmr);
+}
+/*
+ * ID management.
+ */
+
+static inline int insert_handle(struct hvnd_dev *dev, struct idr *idr,
+				void *handle, u32 id)
+{
+	int ret;
+	unsigned long flags;
+
+	idr_preload(GFP_KERNEL);
+	spin_lock_irqsave(&dev->id_lock, flags);
+
+	ret = idr_alloc(idr, handle, id, id + 1, GFP_ATOMIC);
+
+	spin_unlock_irqrestore(&dev->id_lock, flags);
+	idr_preload_end();
+
+	BUG_ON(ret == -ENOSPC);
+	return ret < 0 ? ret : 0;
+}
+
+static inline void remove_handle(struct hvnd_dev *dev, struct idr *idr, u32 id)
+{
+	unsigned long flags;
+	
+	spin_lock_irqsave(&dev->id_lock, flags);
+	idr_remove(idr, id);
+	spin_unlock_irqrestore(&dev->id_lock, flags);
+}
+
+static inline struct hvnd_cq *get_cqp(struct hvnd_dev *dev, u32 cqid)
+{
+	struct hvnd_cq *cqp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->id_lock, flags);
+	cqp =  idr_find(&dev->cqidr, cqid);
+	spin_unlock_irqrestore(&dev->id_lock, flags);
+
+	return cqp;
+}
+
+static inline struct hvnd_qp *get_qpp(struct hvnd_dev *dev, u32 qpid)
+{
+	struct hvnd_qp *qpp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->id_lock, flags);
+	qpp = idr_find(&dev->qpidr, qpid);
+	spin_unlock_irqrestore(&dev->id_lock, flags);
+
+	return qpp;
+}
+
+static inline struct hvnd_ucontext *get_uctx(struct hvnd_dev *dev, u32 pid)
+{
+	struct hvnd_ucontext *uctx;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->id_lock, flags);
+	uctx = idr_find(&dev->uctxidr, pid);
+	spin_unlock_irqrestore(&dev->id_lock, flags);
+
+	return uctx;
+}
+
+
+static inline void *map_irp_to_ctx(struct hvnd_dev *nd_dev, u32 irp)
+{
+	void *ctx;
+	unsigned long flags;
+
+	spin_lock_irqsave(&nd_dev->id_lock, flags);
+	ctx = idr_find(&nd_dev->irpidr, irp);
+	spin_unlock_irqrestore(&nd_dev->id_lock, flags);
+
+	return ctx;
+}
+
+
+
+void hvnd_callback(void *context);
+int hvnd_negotiate_version(struct hvnd_dev *nd_dev);
+int hvnd_init_resources(struct hvnd_dev *nd_dev);
+int hvnd_bind_nic(struct hvnd_dev *nd_dev, bool un_bind, char *ip_addr, char *mac_addr);
+int hvnd_open_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx);
+int hvnd_close_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx);
+int hvnd_query_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx);
+int  hvnd_create_pd(struct hvnd_ucontext *uctx, struct hvnd_dev *nd_dev,
+		    struct hvnd_ib_pd *hvnd_pd);
+
+/*
+ * CQ operations.
+ */
+int hvnd_create_cq(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		   struct hvnd_cq *cq);
+int hvnd_destroy_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq);
+int hvnd_notify_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq,
+		   u32 notify_type, u64 irp_handle);
+
+/*
+ * QP operations.
+ */
+int hvnd_create_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		   struct hvnd_qp *qp);
+
+int hvnd_free_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		 struct hvnd_qp *qp);
+
+int hvnd_flush_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		 struct hvnd_qp *qp);
+
+/*
+ * MR operations.
+ */
+
+int hvnd_cr_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		u64 pd_handle, u64 *mr_handle);
+
+int hvnd_free_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle);
+
+int hvnd_mr_register(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+		     struct hvnd_mr *mr);
+int hvnd_deregister_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle);
+
+/*
+ * Listner operations
+ */
+int hvnd_cr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx, u64 *handle);
+
+
+int hvnd_free_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle);
+
+int hvnd_bind_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, union nd_sockaddr_inet *addr);
+
+int hvnd_listen_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, u32 backlog);
+
+int hvnd_get_addr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, union nd_sockaddr_inet *addr);
+
+int hvnd_get_connection_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 listener_handle, u64 connector_handle,
+			u64 irp_handle);
+
+/*
+ * Connector operations.
+ */
+int hvnd_cr_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 *connector_handle);
+
+int hvnd_free_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle);
+
+int hvnd_cancelio_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle);
+int hvnd_bind_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle, union nd_sockaddr_inet *addr); 
+
+int hvnd_connector_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle, u32 in_rd_limit, u32 out_rd_limit,
+			u32 priv_data_length, const u8 *priv_data,
+			u64 qp_handle, struct if_physical_addr *phys_addr,
+			union nd_sockaddr_inet *dest_addr, struct hvnd_ep_obj *ep);
+
+int hvnd_connector_complete_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle,  enum ibv_qp_state *qp_state);
+
+int hvnd_connector_accept(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			u64 qp_handle,
+			u32 in_rd_limit, u32 out_rd_limit,
+			u32 priv_data_length, const u8 *priv_data,
+			enum ibv_qp_state *qp_state, struct hvnd_ep_obj *ep);
+
+int hvnd_connector_reject(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			u32 priv_data_length, u8 *priv_data,
+			enum ibv_qp_state *qp_state);
+
+int hvnd_connector_get_rd_limits(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			struct nd_read_limits *rd_limits);
+
+int hvnd_connector_get_priv_data(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			u8 *priv_data);
+
+int hvnd_connector_get_peer_addr(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			union nd_sockaddr_inet *peer_addr);
+
+int hvnd_connector_get_local_addr(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle,
+			union nd_sockaddr_inet *local_addr);
+
+int hvnd_connector_notify_disconnect(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle, struct hvnd_ep_obj *ep);
+
+
+int hvnd_connector_disconnect(struct hvnd_dev *nd_dev,
+			struct hvnd_ucontext *uctx,
+			u64 connector_handle, struct hvnd_ep_obj *ep);
+
+int hvnd_free_handle(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+			u64 handle, u32 ioctl);
+
+int hvnd_cancel_io(struct hvnd_ep_obj *ep_object);
+
+char *hvnd_get_op_name(int ioctl);
+
+void hvnd_acquire_uctx_ref(struct hvnd_ucontext *uctx);
+void hvnd_drop_uctx_ref(struct hvnd_dev *nd_dev,struct hvnd_ucontext *uctx);
+void hvnd_process_events(struct work_struct *work);
+
+void hvnd_process_cq_event_pending(struct hvnd_ep_obj *ep, int status);
+void hvnd_process_cq_event_complete(struct hvnd_ep_obj *ep, int status);
+void hvnd_process_connector_accept(struct hvnd_ep_obj *ep_object, int status);
+void hvnd_process_notify_disconnect(struct hvnd_ep_obj *ep_object, int status);
+void hvnd_process_disconnect(struct hvnd_ep_obj *ep_object, int status);
+
+void put_irp_handle(struct hvnd_dev *nd_dev, u32 irp);
+int get_irp_handle(struct hvnd_dev *nd_dev, u32 *local, void *irp_ctx);
+
+void hvnd_init_hdr(struct ndv_packet_hdr_control_1 *hdr,
+			  u32 data_sz, u32 local, u32 remote,
+			  u32 ioctl_code,
+			  u32 ext_data_sz, u32 ext_data_offset,
+			  u64 irp_handle);
+
+int  hvnd_send_ioctl_pkt(struct hvnd_dev *nd_dev,
+				struct ndv_packet_hdr_control_1 *hdr,
+				u32 pkt_size, u64 cookie);
+
+int hvnd_get_outgoing_rdma_addr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
+				union nd_sockaddr_inet *og_addr);
+
+int hvnd_get_neigh_mac_addr(struct sockaddr *local, struct sockaddr *remote, char *mac_addr);
+
+void hvnd_addr_init(void);
+
+void hvnd_addr_deinit(void);
+
+bool ep_add_work_pending(struct hvnd_ep_obj *ep_object);
+void ep_del_work_pending(struct hvnd_ep_obj *ep_object);
+void ep_stop(struct hvnd_ep_obj *ep_object);
+
+#define current_pid()           (current->pid)
+/*
+ * NT STATUS defines.
+ */
+
+#define STATUS_SUCCESS 0x0
+#define STATUS_PENDING 0x00000103
+#define STATUS_CANCELLED 0xC0000120
+#define STATUS_DISCONNECTED 0xC000020C
+#define STATUS_TIMEOUT 0xC00000B5
+
+void inc_ioctl_counter_request(unsigned ioctl);
+void inc_ioctl_counter_response(unsigned ioctl);
+
+#define NDV_PROTOCOL_VAERSION_INVALID -1
+#define NDV_PACKET_INIT_SIZE 16 /* Size of the INIT packet */
+
+#define HVND_RING_SZ (PAGE_SIZE * 64)
+
+/* logging levels */
+#define HVND_ERROR 0
+#define HVND_WARN 1
+#define HVND_INFO 2
+#define HVND_DEBUG 3
+
+extern int hvnd_log_level;
+
+#define hvnd_error(fmt, args...)	hvnd_log(HVND_ERROR, fmt, ##args)
+#define hvnd_warn(fmt, args...)		hvnd_log(HVND_WARN, fmt, ##args)
+#define hvnd_info(fmt, args...)		hvnd_log(HVND_INFO, fmt, ##args)
+#define hvnd_debug(fmt, args...)	hvnd_log(HVND_DEBUG, fmt, ##args)
+
+#define hvnd_log(level, fmt, args...) \
+do { \
+	if (unlikely(hvnd_log_level >= (level))) \
+		printk(KERN_ERR "hvnd %s[%u]: " fmt, __func__, __LINE__, ##args); \
+} while (0)
+
+#endif /* _VMBUS_RDMA_H */