[azure][PATCH v1 4/5] UBUNTU: SAUCE: vmbus-rdma: add 144 version
Marcelo Henrique Cerri
marcelo.cerri at canonical.com
Wed Jul 19 18:15:58 UTC 2017
BugLink: http://bugs.launchpad.net/bugs/1701744
So far the driver for host OS 144 is the same as 142. Create a copy of
the driver so patches can be applied to both versions independently.
Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri at canonical.com>
---
drivers/infiniband/hw/vmbus-rdma/Makefile | 1 +
.../hw/vmbus-rdma/vmbus-rdma-144/COPYING | 339 +++
.../hw/vmbus-rdma/vmbus-rdma-144/Makefile | 3 +
.../hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c | 134 +
.../hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h | 232 ++
.../hw/vmbus-rdma/vmbus-rdma-144/provider.c | 2886 +++++++++++++++++++
.../infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h | 107 +
.../hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c | 2977 ++++++++++++++++++++
.../hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h | 2202 +++++++++++++++
9 files changed, 8881 insertions(+)
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/COPYING
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/Makefile
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/provider.c
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c
create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h
diff --git a/drivers/infiniband/hw/vmbus-rdma/Makefile b/drivers/infiniband/hw/vmbus-rdma/Makefile
index fac98dd0ffb5..b6e900002e2f 100644
--- a/drivers/infiniband/hw/vmbus-rdma/Makefile
+++ b/drivers/infiniband/hw/vmbus-rdma/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_HYPERV_INFINIBAND_ND) += vmbus-rdma-142/
+obj-$(CONFIG_HYPERV_INFINIBAND_ND) += vmbus-rdma-144/
diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/COPYING b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/COPYING
new file mode 100644
index 000000000000..f0960c946b07
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/COPYING
@@ -0,0 +1,339 @@
+
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diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/Makefile b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/Makefile
new file mode 100644
index 000000000000..53814a4b8e41
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_HYPERV_INFINIBAND_ND) += hv_network_direct_144.o
+
+hv_network_direct_144-y := provider.o vmbus_rdma.o hvnd_addr.o
diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c
new file mode 100644
index 000000000000..717e8673c647
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ * K. Y. Srinivasan <kys at 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 at 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;
+}
diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h
new file mode 100644
index 000000000000..8f55cb408de0
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h
@@ -0,0 +1,232 @@
+/*
+ * 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 */
diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/provider.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/provider.c
new file mode 100644
index 000000000000..1f4b89640371
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/provider.c
@@ -0,0 +1,2886 @@
+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ * K. Y. Srinivasan <kys at 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 at 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, unsigned long 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, unsigned long 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 *)∈
+ (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,
+ struct ib_udata *udata)
+{
+ 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;
+
+ if (!context) {
+ hvnd_error("kernel mode context not supported\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ 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 0;
+ }
+
+ 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, struct ib_udata *udata)
+{
+ 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;
+ }
+
+ 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;
+
+ 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.dev.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");
+MODULE_VERSION("4.1.3");
diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h
new file mode 100644
index 000000000000..07e6769ef43b
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h
@@ -0,0 +1,107 @@
+/*
+ * 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 */
diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c
new file mode 100644
index 000000000000..6f0d3846900a
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c
@@ -0,0 +1,2977 @@
+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ * K. Y. Srinivasan <kys at 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 at 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(¬ify_cq_pkt, 0, sizeof(notify_cq_pkt)); //KYS try to avoid having to zero everything
+ hvnd_init_hdr(¬ify_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, ¬ify_cq_pkt.hdr,
+ sizeof(struct pkt_nd_notify_cq),
+ (u64)¬ify_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;
+ struct ib_device_attr *props = &nd_dev->ibdev.attrs;
+ struct adapter_info_v2 *adap_info = &nd_dev->query_pkt.ioctl.ad_info;
+
+ 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);
+ nd_dev->query_pkt_set = true;
+
+ // how about host returning PENDING
+ up(&nd_dev->query_pkt_sem);
+
+ if (ret)
+ return ret;
+
+ hvnd_debug("Query Adaptor Succeeded\n");
+
+ /*
+ * Cache the relevant properties out.
+ */
+ props->fw_ver = 0;
+ props->device_cap_flags = 0;
+ 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;
+}
+
+
+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;
+ }
+ }
+ }
+
+}
diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h
new file mode 100644
index 000000000000..78e534fa8748
--- /dev/null
+++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h
@@ -0,0 +1,2202 @@
+/*
+ * Copyright (c) 2014, Microsoft Corporation.
+ *
+ * Author:
+ * K. Y. Srinivasan <kys at 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 at 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 */
--
2.7.4
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