[dpdk-dev] [PATCH v4 4/7] hv: uio driver

[Stephen Hemminger <stephen@networkplumber.org>]

From: Stephen Hemminger <shemming@brocade.com>

Add new UIO driver in kernel to support DPDK Poll Mode Driver.

Signed-off-by: Stas Egorov <segorov@mirantis.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/librte_eal/linuxapp/Makefile            |   3 +
 lib/librte_eal/linuxapp/hv_uio/Makefile     |  57 ++
 lib/librte_eal/linuxapp/hv_uio/hv_uio.c     | 551 +++++++++++++++++
 lib/librte_eal/linuxapp/hv_uio/hyperv_net.h | 907 ++++++++++++++++++++++++++++
 4 files changed, 1518 insertions(+)
 create mode 100644 lib/librte_eal/linuxapp/hv_uio/Makefile
 create mode 100644 lib/librte_eal/linuxapp/hv_uio/hv_uio.c
 create mode 100644 lib/librte_eal/linuxapp/hv_uio/hyperv_net.h

diff --git a/lib/librte_eal/linuxapp/Makefile b/lib/librte_eal/linuxapp/Makefile
index 8fcfdf6..a28d289 100644
--- a/lib/librte_eal/linuxapp/Makefile
+++ b/lib/librte_eal/linuxapp/Makefile
@@ -41,5 +41,8 @@ endif
 ifeq ($(CONFIG_RTE_LIBRTE_XEN_DOM0),y)
 DIRS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += xen_dom0
 endif
+ifeq ($(CONFIG_RTE_LIBRTE_HV_PMD),y)
+DIRS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += hv_uio
+endif
 
 include $(RTE_SDK)/mk/rte.subdir.mk
diff --git a/lib/librte_eal/linuxapp/hv_uio/Makefile b/lib/librte_eal/linuxapp/hv_uio/Makefile
new file mode 100644
index 0000000..2ed7771
--- /dev/null
+++ b/lib/librte_eal/linuxapp/hv_uio/Makefile
@@ -0,0 +1,57 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+#   Copyright(c) 2013-2015 Brocade Communications Systems, Inc.
+#   All rights reserved.
+#
+#   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.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+#
+# module name and path
+#
+MODULE = hv_uio
+MODULE_PATH = drivers/net/hv_uio
+
+#
+# CFLAGS
+#
+MODULE_CFLAGS += -I$(SRCDIR) --param max-inline-insns-single=100
+MODULE_CFLAGS += -I$(RTE_OUTPUT)/include
+MODULE_CFLAGS += -Winline -Wall -Werror
+MODULE_CFLAGS += -include $(RTE_OUTPUT)/include/rte_config.h
+ifeq ($(CONFIG_RTE_LIBRTE_HV_DEBUG),y)
+MODULE_CFLAGS += -DDBG
+endif
+
+#
+# all source are stored in SRCS-y
+#
+SRCS-y := hv_uio.c
+
+include $(RTE_SDK)/mk/rte.module.mk
diff --git a/lib/librte_eal/linuxapp/hv_uio/hv_uio.c b/lib/librte_eal/linuxapp/hv_uio/hv_uio.c
new file mode 100644
index 0000000..294b0fd
--- /dev/null
+++ b/lib/librte_eal/linuxapp/hv_uio/hv_uio.c
@@ -0,0 +1,551 @@
+/*
+ * Copyright (c) 2013-2015 Brocade Communications Systems, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/if_ether.h>
+#include <linux/uio_driver.h>
+#include <linux/slab.h>
+
+#include "hyperv_net.h"
+
+#define HV_DEVICE_ADD	 0
+#define HV_DEVICE_REMOVE 1
+#define HV_RING_SIZE	 512
+
+static uint mtu = ETH_DATA_LEN;
+/*
+ * List of resources to be mapped to uspace
+ * can be extended up to MAX_UIO_MAPS(5) items
+ */
+enum {
+	TXRX_RING_MAP,
+	INT_PAGE_MAP,
+	MON_PAGE_MAP,
+	RECV_BUF_MAP
+};
+
+struct hyperv_private_data {
+	struct netvsc_device *net_device;
+	struct uio_info *info;
+};
+
+extern void vmbus_get_monitor_pages(unsigned long *int_page,
+				    unsigned long monitor_pages[2]);
+
+/* phys addrs of pages in vmbus_connection from hv_vmbus */
+static unsigned long int_page, monitor_pages[2];
+
+static inline int
+hyperv_uio_find_mem_index(struct uio_info *info, struct vm_area_struct *vma)
+{
+	if (vma->vm_pgoff < MAX_UIO_MAPS) {
+		if (unlikely(info->mem[vma->vm_pgoff].size == 0))
+			return -1;
+		return (int)vma->vm_pgoff;
+	}
+	return -1;
+}
+
+static int
+hyperv_uio_mmap(struct uio_info *info, struct vm_area_struct *vma)
+{
+	int mi = hyperv_uio_find_mem_index(info, vma);
+
+	if (mi < 0)
+		return -EINVAL;
+
+	return remap_pfn_range(vma,
+			vma->vm_start,
+			virt_to_phys((void *)info->mem[mi].addr) >> PAGE_SHIFT,
+			vma->vm_end - vma->vm_start,
+			vma->vm_page_prot);
+}
+
+static struct netvsc_device *
+alloc_net_device(struct hv_device *dev)
+{
+	struct netvsc_device *net_device;
+
+	net_device = kzalloc(sizeof(struct netvsc_device), GFP_KERNEL);
+	if (!net_device) {
+		pr_err("unable to allocate memory for netvsc_device\n");
+		return NULL;
+	}
+
+	init_waitqueue_head(&net_device->wait_drain);
+	net_device->start_remove = false;
+	net_device->destroy = false;
+	net_device->dev = dev;
+	net_device->ndev = hv_get_drvdata(dev);
+	net_device->recv_section_cnt = 0;
+
+	return net_device;
+}
+
+/* Negotiate NVSP protocol version */
+static int
+negotiate_nvsp_ver(struct hv_device *dev,
+		   struct netvsc_device *net_device,
+		   struct nvsp_message *init_packet,
+		   u32 nvsp_ver)
+{
+	int ret;
+
+	memset(init_packet, 0, sizeof(struct nvsp_message));
+	init_packet->hdr.msg_type = NVSP_MSG_TYPE_INIT;
+	init_packet->msg.init_msg.init.min_protocol_ver = nvsp_ver;
+	init_packet->msg.init_msg.init.max_protocol_ver = nvsp_ver;
+
+	/* Send the init request */
+	ret = vmbus_sendpacket(dev->channel, init_packet,
+			       sizeof(struct nvsp_message),
+			       (unsigned long)init_packet,
+			       VM_PKT_DATA_INBAND,
+			       VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+
+	if (ret) {
+		pr_err("unable to send nvsp negotiation packet\n");
+		return ret;
+	}
+
+	if (nvsp_ver != NVSP_PROTOCOL_VERSION_2)
+		return 0;
+
+	/* NVSPv2 only: Send NDIS config */
+	memset(init_packet, 0, sizeof(struct nvsp_message));
+	init_packet->hdr.msg_type = NVSP_MSG2_TYPE_SEND_NDIS_CONFIG;
+	init_packet->msg.v2_msg.send_ndis_config.mtu = mtu;
+	init_packet->msg.v2_msg.send_ndis_config.capability.ieee8021q = 1;
+
+	ret = vmbus_sendpacket(dev->channel, init_packet,
+			       sizeof(struct nvsp_message),
+			       (unsigned long)init_packet,
+			       VM_PKT_DATA_INBAND, 0);
+
+	return ret;
+}
+
+static int
+netvsc_destroy_recv_buf(struct netvsc_device *net_device)
+{
+	struct nvsp_message *revoke_packet;
+	int ret = 0;
+
+	/*
+	 * If we got a section count, it means we received a
+	 * SendReceiveBufferComplete msg (ie sent
+	 * NvspMessage1TypeSendReceiveBuffer msg) therefore, we need
+	 * to send a revoke msg here
+	 */
+	if (net_device->recv_section_cnt) {
+		/* Send the revoke receive buffer */
+		revoke_packet = &net_device->revoke_packet;
+		memset(revoke_packet, 0, sizeof(struct nvsp_message));
+
+		revoke_packet->hdr.msg_type =
+			NVSP_MSG1_TYPE_REVOKE_RECV_BUF;
+		revoke_packet->msg.v1_msg.
+		revoke_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID;
+
+		ret = vmbus_sendpacket(net_device->dev->channel,
+				       revoke_packet,
+				       sizeof(struct nvsp_message),
+				       (unsigned long)revoke_packet,
+				       VM_PKT_DATA_INBAND, 0);
+		/*
+		 * If we failed here, we might as well return and
+		 * have a leak rather than continue and a bugchk
+		 */
+		if (ret != 0) {
+			pr_err("unable to send revoke receive buffer to netvsp\n");
+			return ret;
+		}
+	}
+
+	/* Teardown the gpadl on the vsp end */
+	if (net_device->recv_buf_gpadl_handle) {
+		pr_devel("trying to teardown gpadl...\n");
+		ret = vmbus_teardown_gpadl(net_device->dev->channel,
+			   net_device->recv_buf_gpadl_handle);
+
+		if (ret) {
+			pr_err("unable to teardown receive buffer's gpadl\n");
+			return ret;
+		}
+		net_device->recv_buf_gpadl_handle = 0;
+	}
+
+	if (net_device->recv_buf) {
+		/* Free up the receive buffer */
+		free_pages((unsigned long)net_device->recv_buf,
+				get_order(net_device->recv_buf_size));
+		net_device->recv_buf = NULL;
+	}
+
+	if (net_device->recv_section) {
+		net_device->recv_section_cnt = 0;
+		kfree(net_device->recv_section);
+		net_device->recv_section = NULL;
+	}
+
+	return ret;
+}
+
+static int
+netvsc_init_recv_buf(struct hv_device *dev, struct netvsc_device *net_dev)
+{
+	int ret = 0;
+	struct nvsp_message *init_packet;
+
+	if (!net_dev)
+		return -ENODEV;
+
+	net_dev->recv_buf = (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO,
+			get_order(net_dev->recv_buf_size));
+	if (!net_dev->recv_buf) {
+		pr_err("unable to allocate receive buffer of size %d\n",
+		       net_dev->recv_buf_size);
+		ret = -ENOMEM;
+		goto cleanup;
+	}
+
+	/*
+	 * Establish the gpadl handle for this buffer on this
+	 * channel.  Note: This call uses the vmbus connection rather
+	 * than the channel to establish the gpadl handle.
+	 */
+	ret = vmbus_establish_gpadl(dev->channel, net_dev->recv_buf,
+				    net_dev->recv_buf_size,
+				    &net_dev->recv_buf_gpadl_handle);
+	if (ret != 0) {
+		pr_err("unable to establish receive buffer's gpadl\n");
+		goto cleanup;
+	}
+
+
+	/* Notify the NetVsp of the gpadl handle */
+	init_packet = &net_dev->channel_init_pkt;
+
+	memset(init_packet, 0, sizeof(struct nvsp_message));
+
+	init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_RECV_BUF;
+	init_packet->msg.v1_msg.send_recv_buf.
+		gpadl_handle = net_dev->recv_buf_gpadl_handle;
+	init_packet->msg.v1_msg.
+		send_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID;
+
+	/* Send the gpadl notification request */
+	ret = vmbus_sendpacket(dev->channel, init_packet,
+			       sizeof(struct nvsp_message),
+			       (unsigned long)init_packet,
+			       VM_PKT_DATA_INBAND,
+			       VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+	if (ret != 0) {
+		pr_err("unable to send receive buffer's gpadl to netvsp\n");
+		goto cleanup;
+	}
+
+	net_dev->recv_section_cnt = 1;
+	goto exit;
+
+cleanup:
+	netvsc_destroy_recv_buf(net_dev);
+
+exit:
+	return ret;
+}
+
+static int
+netvsc_connect_vsp(struct hv_device *dev, struct netvsc_device *net_dev)
+{
+	int ret;
+	struct nvsp_message *init_packet;
+	int ndis_version;
+
+	if (!net_dev)
+		return -ENODEV;
+
+	init_packet = &net_dev->channel_init_pkt;
+
+	/* Negotiate the latest NVSP protocol supported */
+	if (negotiate_nvsp_ver(dev, net_dev, init_packet,
+			       NVSP_PROTOCOL_VERSION_2) == 0) {
+		net_dev->nvsp_version = NVSP_PROTOCOL_VERSION_2;
+	} else if (negotiate_nvsp_ver(dev, net_dev, init_packet,
+				    NVSP_PROTOCOL_VERSION_1) == 0) {
+		net_dev->nvsp_version = NVSP_PROTOCOL_VERSION_1;
+	} else {
+		return -EPROTO;
+	}
+
+	pr_devel("Negotiated NVSP version:%x\n", net_dev->nvsp_version);
+
+	/* Send the ndis version */
+	memset(init_packet, 0, sizeof(struct nvsp_message));
+
+	ndis_version = 0x00050001;
+
+	init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_NDIS_VER;
+	init_packet->msg.v1_msg.
+		send_ndis_ver.ndis_major_ver =
+				(ndis_version & 0xFFFF0000) >> 16;
+	init_packet->msg.v1_msg.
+		send_ndis_ver.ndis_minor_ver =
+				ndis_version & 0xFFFF;
+
+	/* Send the init request */
+	ret = vmbus_sendpacket(dev->channel, init_packet,
+				sizeof(struct nvsp_message),
+				(unsigned long)init_packet,
+				VM_PKT_DATA_INBAND, 0);
+	if (ret != 0) {
+		pr_err("unable to send init_packet via vmbus\n");
+		return ret;
+	}
+
+	/* Post the big receive buffer to NetVSP */
+	ret = netvsc_init_recv_buf(dev, net_dev);
+
+	return ret;
+}
+
+static int
+hyperv_dev_add(struct hv_device *dev, struct netvsc_device *net_dev)
+{
+	int ret = 0;
+
+	net_dev->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE;
+
+	ret = vmbus_open(dev->channel, HV_RING_SIZE * PAGE_SIZE,
+			HV_RING_SIZE * PAGE_SIZE, NULL, 0, NULL, dev);
+	if (ret) {
+		pr_err("unable to open channel: %d\n", ret);
+		return ret;
+	}
+	dev->channel->inbound.ring_buffer->interrupt_mask = 1;
+
+	ret = netvsc_connect_vsp(dev, net_dev);
+	if (ret) {
+		pr_err("unable to connect to NetVSP: %d\n", ret);
+		goto close;
+	}
+
+	return ret;
+
+close:
+	vmbus_close(dev->channel);
+
+	return ret;
+}
+
+static void
+hyperv_dev_remove(struct hv_device *dev, struct netvsc_device *net_dev)
+{
+	if (net_dev->recv_buf) {
+		netvsc_destroy_recv_buf(net_dev);
+		vmbus_close(dev->channel);
+	}
+}
+
+#define MAX_HV_DEVICE_NUM 256
+static struct hv_device *hv_device_list[MAX_HV_DEVICE_NUM];
+
+/*
+ * This callback is set as irqcontrol for uio, it can be used for mtu changing
+ * The variable arg consists of command, device number(see HV_DEV_ID)
+ * and value of MTU(see HV_MTU)
+ */
+static int
+hyperv_write_cb(struct uio_info *info, s32 arg)
+{
+	struct hv_device *dev;
+	int ret, cmd = arg & 1, dev_num = (arg >> 1) & 0xFF;
+	struct hyperv_private_data *pdata;
+	struct netvsc_device *net_device;
+
+	dev = hv_device_list[dev_num];
+	if (!dev)
+		return 0;
+	pdata = hv_get_drvdata(dev);
+	net_device = pdata->net_device;
+	switch (cmd) {
+	case HV_DEVICE_ADD:
+		mtu = arg >> 9;
+		pr_devel("New mtu = %u\n", mtu);
+		ret = hyperv_dev_add(dev, net_device);
+		if (!ret) {
+			info->mem[TXRX_RING_MAP].addr =
+				(phys_addr_t)(dev->channel->ringbuffer_pages);
+			info->mem[RECV_BUF_MAP].addr = (phys_addr_t)(net_device->recv_buf);
+			return sizeof(s32);
+		}
+		break;
+	case HV_DEVICE_REMOVE:
+		hyperv_dev_remove(dev, net_device);
+		return sizeof(s32);
+	}
+
+	return 0;
+}
+
+static int
+hyperv_probe(struct hv_device *dev,
+		const struct hv_vmbus_device_id *dev_id)
+{
+	int ret;
+	struct hyperv_private_data *pdata;
+	struct uio_info *info;
+	struct netvsc_device *net_device;
+
+	pdata = kzalloc(sizeof(struct hyperv_private_data), GFP_KERNEL);
+	if (!pdata) {
+		pr_err("Failed to allocate hyperv_private_data\n");
+		return -ENOMEM;
+	}
+
+	info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+	if (!info) {
+		pr_err("Failed to allocate uio_info\n");
+		kfree(pdata);
+		return -ENOMEM;
+	}
+
+	net_device = alloc_net_device(dev);
+	if (!net_device) {
+		kfree(pdata);
+		kfree(info);
+		return -ENOMEM;
+	}
+
+	ret = hyperv_dev_add(dev, net_device);
+	if (ret) {
+		kfree(pdata);
+		kfree(info);
+		kfree(net_device);
+		return ret;
+	}
+
+	/* Fill general uio info */
+	info->name = "hv_uio";
+	info->version = "1.0";
+	info->irqcontrol = hyperv_write_cb;
+	info->irq = UIO_IRQ_CUSTOM;
+
+	/* mem resources */
+	info->mem[TXRX_RING_MAP].name = "txrx_rings";
+	info->mem[TXRX_RING_MAP].addr =
+		(phys_addr_t)(dev->channel->ringbuffer_pages);
+	info->mem[TXRX_RING_MAP].size = HV_RING_SIZE * PAGE_SIZE * 2;
+	info->mem[TXRX_RING_MAP].memtype = UIO_MEM_LOGICAL;
+
+	info->mem[INT_PAGE_MAP].name = "int_page";
+	info->mem[INT_PAGE_MAP].addr =
+		(phys_addr_t)(int_page);
+	info->mem[INT_PAGE_MAP].size = PAGE_SIZE;
+	info->mem[INT_PAGE_MAP].memtype = UIO_MEM_LOGICAL;
+
+	info->mem[MON_PAGE_MAP].name = "monitor_pages";
+	info->mem[MON_PAGE_MAP].addr =
+		(phys_addr_t)(monitor_pages[1]);
+	info->mem[MON_PAGE_MAP].size = PAGE_SIZE;
+	info->mem[MON_PAGE_MAP].memtype = UIO_MEM_LOGICAL;
+
+	info->mem[RECV_BUF_MAP].name = "recv_buf";
+	info->mem[RECV_BUF_MAP].addr = (phys_addr_t)(net_device->recv_buf);
+	info->mem[RECV_BUF_MAP].size = net_device->recv_buf_size;
+	info->mem[RECV_BUF_MAP].memtype = UIO_MEM_LOGICAL;
+
+	info->mmap = hyperv_uio_mmap;
+
+	pr_devel("register hyperv driver for hv_device {%pUl}\n", dev->dev_instance.b);
+	ret = uio_register_device(&dev->device, info);
+	if (ret)
+		pr_err("Failed to register uio device for hyperv\n");
+	else
+		hv_device_list[dev->channel->offermsg.child_relid] = dev;
+
+	pdata->info = info;
+	pdata->net_device = net_device;
+	hv_set_drvdata(dev, pdata);
+
+	return ret;
+}
+
+static int
+hyperv_remove(struct hv_device *dev)
+{
+	struct hyperv_private_data *pdata;
+	struct uio_info *info;
+	struct netvsc_device *net_dev;
+
+	pr_devel("unregister hyperv driver for hv_device {%pUl}\n",
+	       dev->dev_instance.b);
+
+	pdata = hv_get_drvdata(dev);
+	info = pdata->info;
+	uio_unregister_device(info);
+	kfree(info);
+
+	net_dev = pdata->net_device;
+	hv_set_drvdata(dev, NULL);
+
+	hyperv_dev_remove(dev, net_dev);
+
+	kfree(net_dev);
+	kfree(pdata);
+
+	return 0;
+}
+
+static const struct hv_vmbus_device_id hyperv_id_table[] = {
+	{ HV_NIC_GUID, },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(vmbus, hyperv_id_table);
+
+static struct hv_driver hv_uio_drv = {
+	.name = KBUILD_MODNAME,
+	.id_table = hyperv_id_table,
+	.probe = hyperv_probe,
+	.remove = hyperv_remove,
+};
+
+static int __init
+hyperv_module_init(void)
+{
+	vmbus_get_monitor_pages(&int_page, monitor_pages);
+
+	return vmbus_driver_register(&hv_uio_drv);
+}
+
+static void __exit
+hyperv_module_exit(void)
+{
+	vmbus_driver_unregister(&hv_uio_drv);
+}
+
+module_init(hyperv_module_init);
+module_exit(hyperv_module_exit);
+
+MODULE_DESCRIPTION("UIO driver for Hyper-V netVSC");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Brocade");
diff --git a/lib/librte_eal/linuxapp/hv_uio/hyperv_net.h b/lib/librte_eal/linuxapp/hv_uio/hyperv_net.h
new file mode 100644
index 0000000..8097779
--- /dev/null
+++ b/lib/librte_eal/linuxapp/hv_uio/hyperv_net.h
@@ -0,0 +1,907 @@
+/*
+ *
+ * Copyright (c) 2011, Microsoft Corporation.
+ * Copyright (c) 2013-2015 Brocade Communications Systems, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Authors:
+ *   Haiyang Zhang <haiyangz@microsoft.com>
+ *   Hank Janssen  <hjanssen@microsoft.com>
+ *   K. Y. Srinivasan <kys@microsoft.com>
+ *
+ */
+
+#ifndef _HYPERV_NET_H
+#define _HYPERV_NET_H
+
+#include <linux/list.h>
+#include <linux/hyperv.h>
+#include <linux/rndis.h>
+
+/* Fwd declaration */
+struct hv_netvsc_packet;
+
+/* Represent the xfer page packet which contains 1 or more netvsc packet */
+struct xferpage_packet {
+	struct list_head list_ent;
+	u32 status;
+
+	/* # of netvsc packets this xfer packet contains */
+	u32 count;
+};
+
+/*
+ * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
+ * within the RNDIS
+ */
+struct hv_netvsc_packet {
+	/* Bookkeeping stuff */
+	struct list_head list_ent;
+	u32 status;
+
+	struct hv_device *device;
+	bool is_data_pkt;
+	u16 vlan_tci;
+
+	/*
+	 * Valid only for receives when we break a xfer page packet
+	 * into multiple netvsc packets
+	 */
+	struct xferpage_packet *xfer_page_pkt;
+
+	union {
+		struct {
+			u64 recv_completion_tid;
+			void *recv_completion_ctx;
+			void (*recv_completion)(void *context);
+		} recv;
+		struct {
+			u64 send_completion_tid;
+			void *send_completion_ctx;
+			void (*send_completion)(void *context);
+		} send;
+	} completion;
+
+	/* This points to the memory after page_buf */
+	void *extension;
+
+	u32 total_data_buflen;
+	/* Points to the send/receive buffer where the ethernet frame is */
+	void *data;
+	u32 page_buf_cnt;
+	struct hv_page_buffer page_buf[0];
+};
+
+struct netvsc_device_info {
+	unsigned char mac_adr[ETH_ALEN];
+	bool link_state;	/* 0 - link up, 1 - link down */
+	int  ring_size;
+};
+
+enum rndis_device_state {
+	RNDIS_DEV_UNINITIALIZED = 0,
+	RNDIS_DEV_INITIALIZING,
+	RNDIS_DEV_INITIALIZED,
+	RNDIS_DEV_DATAINITIALIZED,
+};
+
+struct rndis_device {
+	struct netvsc_device *net_dev;
+
+	enum rndis_device_state state;
+	bool link_state;
+	atomic_t new_req_id;
+
+	spinlock_t request_lock;
+	struct list_head req_list;
+
+	unsigned char hw_mac_adr[ETH_ALEN];
+};
+
+
+/* Interface */
+int netvsc_device_add(struct hv_device *device, void *additional_info);
+int netvsc_device_remove(struct hv_device *device);
+int netvsc_send(struct hv_device *device,
+		struct hv_netvsc_packet *packet);
+void netvsc_linkstatus_callback(struct hv_device *device_obj,
+				unsigned int status);
+int netvsc_recv_callback(struct hv_device *device_obj,
+			struct hv_netvsc_packet *packet);
+int rndis_filter_open(struct hv_device *dev);
+int rndis_filter_close(struct hv_device *dev);
+int rndis_filter_device_add(struct hv_device *dev,
+			void *additional_info);
+void rndis_filter_device_remove(struct hv_device *dev);
+int rndis_filter_receive(struct hv_device *dev,
+			struct hv_netvsc_packet *pkt);
+
+
+
+int rndis_filter_send(struct hv_device *dev,
+			struct hv_netvsc_packet *pkt);
+
+int rndis_filter_set_packet_filter(struct rndis_device *dev, u32 new_filter);
+int rndis_filter_set_device_mac(struct hv_device *hdev, char *mac);
+
+
+#define NVSP_INVALID_PROTOCOL_VERSION	((u32)0xFFFFFFFF)
+
+#define NVSP_PROTOCOL_VERSION_1		2
+#define NVSP_PROTOCOL_VERSION_2		0x30002
+
+enum {
+	NVSP_MSG_TYPE_NONE = 0,
+
+	/* Init Messages */
+	NVSP_MSG_TYPE_INIT			= 1,
+	NVSP_MSG_TYPE_INIT_COMPLETE		= 2,
+
+	NVSP_VERSION_MSG_START			= 100,
+
+	/* Version 1 Messages */
+	NVSP_MSG1_TYPE_SEND_NDIS_VER		= NVSP_VERSION_MSG_START,
+
+	NVSP_MSG1_TYPE_SEND_RECV_BUF,
+	NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
+	NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
+
+	NVSP_MSG1_TYPE_SEND_SEND_BUF,
+	NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
+	NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
+
+	NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
+	NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
+
+	/* Version 2 messages */
+	NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
+	NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
+	NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
+
+	NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
+
+	NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
+	NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
+
+	NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
+
+	NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
+	NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
+
+	NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
+	NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
+
+	NVSP_MSG2_TYPE_ALLOC_RXBUF,
+	NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
+
+	NVSP_MSG2_TYPE_FREE_RXBUF,
+
+	NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
+	NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
+
+	NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
+
+	NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
+	NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
+};
+
+enum {
+	NVSP_STAT_NONE = 0,
+	NVSP_STAT_SUCCESS,
+	NVSP_STAT_FAIL,
+	NVSP_STAT_PROTOCOL_TOO_NEW,
+	NVSP_STAT_PROTOCOL_TOO_OLD,
+	NVSP_STAT_INVALID_RNDIS_PKT,
+	NVSP_STAT_BUSY,
+	NVSP_STAT_PROTOCOL_UNSUPPORTED,
+	NVSP_STAT_MAX,
+};
+
+struct nvsp_message_header {
+	u32 msg_type;
+};
+
+/* Init Messages */
+
+/*
+ * This message is used by the VSC to initialize the channel after the channels
+ * has been opened. This message should never include anything other then
+ * versioning (i.e. this message will be the same for ever).
+ */
+struct nvsp_message_init {
+	u32 min_protocol_ver;
+	u32 max_protocol_ver;
+} __packed;
+
+/*
+ * This message is used by the VSP to complete the initialization of the
+ * channel. This message should never include anything other then versioning
+ * (i.e. this message will be the same for ever).
+ */
+struct nvsp_message_init_complete {
+	u32 negotiated_protocol_ver;
+	u32 max_mdl_chain_len;
+	u32 status;
+} __packed;
+
+union nvsp_message_init_uber {
+	struct nvsp_message_init init;
+	struct nvsp_message_init_complete init_complete;
+} __packed;
+
+/* Version 1 Messages */
+
+/*
+ * This message is used by the VSC to send the NDIS version to the VSP. The VSP
+ * can use this information when handling OIDs sent by the VSC.
+ */
+struct nvsp_1_message_send_ndis_version {
+	u32 ndis_major_ver;
+	u32 ndis_minor_ver;
+} __packed;
+
+/*
+ * This message is used by the VSC to send a receive buffer to the VSP. The VSP
+ * can then use the receive buffer to send data to the VSC.
+ */
+struct nvsp_1_message_send_receive_buffer {
+	u32 gpadl_handle;
+	u16 id;
+} __packed;
+
+struct nvsp_1_receive_buffer_section {
+	u32 offset;
+	u32 sub_alloc_size;
+	u32 num_sub_allocs;
+	u32 end_offset;
+} __packed;
+
+/*
+ * This message is used by the VSP to acknowledge a receive buffer send by the
+ * VSC. This message must be sent by the VSP before the VSP uses the receive
+ * buffer.
+ */
+struct nvsp_1_message_send_receive_buffer_complete {
+	u32 status;
+	u32 num_sections;
+
+	/*
+	 * The receive buffer is split into two parts, a large suballocation
+	 * section and a small suballocation section. These sections are then
+	 * suballocated by a certain size.
+	 */
+
+	/*
+	 * For example, the following break up of the receive buffer has 6
+	 * large suballocations and 10 small suballocations.
+	 */
+
+	/*
+	 * |            Large Section          |  |   Small Section   |
+	 * ------------------------------------------------------------
+	 * |     |     |     |     |     |     |  | | | | | | | | | | |
+	 * |                                      |
+	 *  LargeOffset                            SmallOffset
+	 */
+
+	struct nvsp_1_receive_buffer_section sections[1];
+} __packed;
+
+/*
+ * This message is sent by the VSC to revoke the receive buffer.  After the VSP
+ * completes this transaction, the vsp should never use the receive buffer
+ * again.
+ */
+struct nvsp_1_message_revoke_receive_buffer {
+	u16 id;
+};
+
+/*
+ * This message is used by the VSC to send a send buffer to the VSP. The VSC
+ * can then use the send buffer to send data to the VSP.
+ */
+struct nvsp_1_message_send_send_buffer {
+	u32 gpadl_handle;
+	u16 id;
+} __packed;
+
+/*
+ * This message is used by the VSP to acknowledge a send buffer sent by the
+ * VSC. This message must be sent by the VSP before the VSP uses the sent
+ * buffer.
+ */
+struct nvsp_1_message_send_send_buffer_complete {
+	u32 status;
+
+	/*
+	 * The VSC gets to choose the size of the send buffer and the VSP gets
+	 * to choose the sections size of the buffer.  This was done to enable
+	 * dynamic reconfigurations when the cost of GPA-direct buffers
+	 * decreases.
+	 */
+	u32 section_size;
+} __packed;
+
+/*
+ * This message is sent by the VSC to revoke the send buffer.  After the VSP
+ * completes this transaction, the vsp should never use the send buffer again.
+ */
+struct nvsp_1_message_revoke_send_buffer {
+	u16 id;
+};
+
+/*
+ * This message is used by both the VSP and the VSC to send a RNDIS message to
+ * the opposite channel endpoint.
+ */
+struct nvsp_1_message_send_rndis_packet {
+	/*
+	 * This field is specified by RNIDS. They assume there's two different
+	 * channels of communication. However, the Network VSP only has one.
+	 * Therefore, the channel travels with the RNDIS packet.
+	 */
+	u32 channel_type;
+
+	/*
+	 * This field is used to send part or all of the data through a send
+	 * buffer. This values specifies an index into the send buffer. If the
+	 * index is 0xFFFFFFFF, then the send buffer is not being used and all
+	 * of the data was sent through other VMBus mechanisms.
+	 */
+	u32 send_buf_section_index;
+	u32 send_buf_section_size;
+} __packed;
+
+/*
+ * This message is used by both the VSP and the VSC to complete a RNDIS message
+ * to the opposite channel endpoint. At this point, the initiator of this
+ * message cannot use any resources associated with the original RNDIS packet.
+ */
+struct nvsp_1_message_send_rndis_packet_complete {
+	u32 status;
+};
+
+union nvsp_1_message_uber {
+	struct nvsp_1_message_send_ndis_version send_ndis_ver;
+
+	struct nvsp_1_message_send_receive_buffer send_recv_buf;
+	struct nvsp_1_message_send_receive_buffer_complete
+						send_recv_buf_complete;
+	struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
+
+	struct nvsp_1_message_send_send_buffer send_send_buf;
+	struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
+	struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
+
+	struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
+	struct nvsp_1_message_send_rndis_packet_complete
+						send_rndis_pkt_complete;
+} __packed;
+
+
+/*
+ * Network VSP protocol version 2 messages:
+ */
+struct nvsp_2_vsc_capability {
+	union {
+		u64 data;
+		struct {
+			u64 vmq:1;
+			u64 chimney:1;
+			u64 sriov:1;
+			u64 ieee8021q:1;
+			u64 correlation_id:1;
+		};
+	};
+} __packed;
+
+struct nvsp_2_send_ndis_config {
+	u32 mtu;
+	u32 reserved;
+	struct nvsp_2_vsc_capability capability;
+} __packed;
+
+/* Allocate receive buffer */
+struct nvsp_2_alloc_rxbuf {
+	/* Allocation ID to match the allocation request and response */
+	u32 alloc_id;
+
+	/* Length of the VM shared memory receive buffer that needs to
+	 * be allocated
+	 */
+	u32 len;
+} __packed;
+
+/* Allocate receive buffer complete */
+struct nvsp_2_alloc_rxbuf_comp {
+	/* The NDIS_STATUS code for buffer allocation */
+	u32 status;
+
+	u32 alloc_id;
+
+	/* GPADL handle for the allocated receive buffer */
+	u32 gpadl_handle;
+
+	/* Receive buffer ID */
+	u64 recv_buf_id;
+} __packed;
+
+struct nvsp_2_free_rxbuf {
+	u64 recv_buf_id;
+} __packed;
+
+union nvsp_2_message_uber {
+	struct nvsp_2_send_ndis_config send_ndis_config;
+	struct nvsp_2_alloc_rxbuf alloc_rxbuf;
+	struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
+	struct nvsp_2_free_rxbuf free_rxbuf;
+} __packed;
+
+union nvsp_all_messages {
+	union nvsp_message_init_uber init_msg;
+	union nvsp_1_message_uber v1_msg;
+	union nvsp_2_message_uber v2_msg;
+} __packed;
+
+/* ALL Messages */
+struct nvsp_message {
+	struct nvsp_message_header hdr;
+	union nvsp_all_messages msg;
+} __packed;
+
+
+#define NETVSC_MTU 65536
+
+#define NETVSC_RECEIVE_BUFFER_SIZE (MAX_ORDER_NR_PAGES * PAGE_SIZE)
+
+#define NETVSC_RECEIVE_BUFFER_ID		0xcafe
+
+/* Per netvsc channel-specific */
+struct netvsc_device {
+	struct hv_device *dev;
+
+	u32 nvsp_version;
+
+	atomic_t num_outstanding_sends;
+	wait_queue_head_t wait_drain;
+	bool start_remove;
+	bool destroy;
+	/*
+	 * List of free preallocated hv_netvsc_packet to represent receive
+	 * packet
+	 */
+	struct list_head recv_pkt_list;
+	spinlock_t recv_pkt_list_lock;
+
+	/* Receive buffer allocated by us but manages by NetVSP */
+	void *recv_buf;
+	u32 recv_buf_size;
+	u32 recv_buf_gpadl_handle;
+	u32 recv_section_cnt;
+	struct nvsp_1_receive_buffer_section *recv_section;
+
+	/* Used for NetVSP initialization protocol */
+	struct completion channel_init_wait;
+	struct nvsp_message channel_init_pkt;
+
+	struct nvsp_message revoke_packet;
+	/* unsigned char HwMacAddr[HW_MACADDR_LEN]; */
+
+	struct net_device *ndev;
+
+	/* Holds rndis device info */
+	void *extension;
+};
+
+/* NdisInitialize message */
+struct rndis_initialize_request {
+	u32 req_id;
+	u32 major_ver;
+	u32 minor_ver;
+	u32 max_xfer_size;
+};
+
+/* Response to NdisInitialize */
+struct rndis_initialize_complete {
+	u32 req_id;
+	u32 status;
+	u32 major_ver;
+	u32 minor_ver;
+	u32 dev_flags;
+	u32 medium;
+	u32 max_pkt_per_msg;
+	u32 max_xfer_size;
+	u32 pkt_alignment_factor;
+	u32 af_list_offset;
+	u32 af_list_size;
+};
+
+/* Call manager devices only: Information about an address family */
+/* supported by the device is appended to the response to NdisInitialize. */
+struct rndis_co_address_family {
+	u32 address_family;
+	u32 major_ver;
+	u32 minor_ver;
+};
+
+/* NdisHalt message */
+struct rndis_halt_request {
+	u32 req_id;
+};
+
+/* NdisQueryRequest message */
+struct rndis_query_request {
+	u32 req_id;
+	u32 oid;
+	u32 info_buflen;
+	u32 info_buf_offset;
+	u32 dev_vc_handle;
+};
+
+/* Response to NdisQueryRequest */
+struct rndis_query_complete {
+	u32 req_id;
+	u32 status;
+	u32 info_buflen;
+	u32 info_buf_offset;
+};
+
+/* NdisSetRequest message */
+struct rndis_set_request {
+	u32 req_id;
+	u32 oid;
+	u32 info_buflen;
+	u32 info_buf_offset;
+	u32 dev_vc_handle;
+};
+
+/* Response to NdisSetRequest */
+struct rndis_set_complete {
+	u32 req_id;
+	u32 status;
+};
+
+/* NdisReset message */
+struct rndis_reset_request {
+	u32 reserved;
+};
+
+/* Response to NdisReset */
+struct rndis_reset_complete {
+	u32 status;
+	u32 addressing_reset;
+};
+
+/* NdisMIndicateStatus message */
+struct rndis_indicate_status {
+	u32 status;
+	u32 status_buflen;
+	u32 status_buf_offset;
+};
+
+/* Diagnostic information passed as the status buffer in */
+/* struct rndis_indicate_status messages signifying error conditions. */
+struct rndis_diagnostic_info {
+	u32 diag_status;
+	u32 error_offset;
+};
+
+/* NdisKeepAlive message */
+struct rndis_keepalive_request {
+	u32 req_id;
+};
+
+/* Response to NdisKeepAlive */
+struct rndis_keepalive_complete {
+	u32 req_id;
+	u32 status;
+};
+
+/*
+ * Data message. All Offset fields contain byte offsets from the beginning of
+ * struct rndis_packet. All Length fields are in bytes.  VcHandle is set
+ * to 0 for connectionless data, otherwise it contains the VC handle.
+ */
+struct rndis_packet {
+	u32 data_offset;
+	u32 data_len;
+	u32 oob_data_offset;
+	u32 oob_data_len;
+	u32 num_oob_data_elements;
+	u32 per_pkt_info_offset;
+	u32 per_pkt_info_len;
+	u32 vc_handle;
+	u32 reserved;
+};
+
+/* Optional Out of Band data associated with a Data message. */
+struct rndis_oobd {
+	u32 size;
+	u32 type;
+	u32 class_info_offset;
+};
+
+/* Packet extension field contents associated with a Data message. */
+struct rndis_per_packet_info {
+	u32 size;
+	u32 type;
+	u32 ppi_offset;
+};
+
+enum ndis_per_pkt_info_type {
+	TCPIP_CHKSUM_PKTINFO,
+	IPSEC_PKTINFO,
+	TCP_LARGESEND_PKTINFO,
+	CLASSIFICATION_HANDLE_PKTINFO,
+	NDIS_RESERVED,
+	SG_LIST_PKTINFO,
+	IEEE_8021Q_INFO,
+	ORIGINAL_PKTINFO,
+	PACKET_CANCEL_ID,
+	ORIGINAL_NET_BUFLIST,
+	CACHED_NET_BUFLIST,
+	SHORT_PKT_PADINFO,
+	MAX_PER_PKT_INFO
+};
+
+struct ndis_pkt_8021q_info {
+	union {
+		struct {
+			u32 pri:3; /* User Priority */
+			u32 cfi:1; /* Canonical Format ID */
+			u32 vlanid:12; /* VLAN ID */
+			u32 reserved:16;
+		};
+		u32 value;
+	};
+};
+
+#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
+		sizeof(struct ndis_pkt_8021q_info))
+
+/* Format of Information buffer passed in a SetRequest for the OID */
+/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
+struct rndis_config_parameter_info {
+	u32 parameter_name_offset;
+	u32 parameter_name_length;
+	u32 parameter_type;
+	u32 parameter_value_offset;
+	u32 parameter_value_length;
+};
+
+/* Values for ParameterType in struct rndis_config_parameter_info */
+#define RNDIS_CONFIG_PARAM_TYPE_INTEGER     0
+#define RNDIS_CONFIG_PARAM_TYPE_STRING      2
+
+/* CONDIS Miniport messages for connection oriented devices */
+/* that do not implement a call manager. */
+
+/* CoNdisMiniportCreateVc message */
+struct rcondis_mp_create_vc {
+	u32 req_id;
+	u32 ndis_vc_handle;
+};
+
+/* Response to CoNdisMiniportCreateVc */
+struct rcondis_mp_create_vc_complete {
+	u32 req_id;
+	u32 dev_vc_handle;
+	u32 status;
+};
+
+/* CoNdisMiniportDeleteVc message */
+struct rcondis_mp_delete_vc {
+	u32 req_id;
+	u32 dev_vc_handle;
+};
+
+/* Response to CoNdisMiniportDeleteVc */
+struct rcondis_mp_delete_vc_complete {
+	u32 req_id;
+	u32 status;
+};
+
+/* CoNdisMiniportQueryRequest message */
+struct rcondis_mp_query_request {
+	u32 req_id;
+	u32 request_type;
+	u32 oid;
+	u32 dev_vc_handle;
+	u32 info_buflen;
+	u32 info_buf_offset;
+};
+
+/* CoNdisMiniportSetRequest message */
+struct rcondis_mp_set_request {
+	u32 req_id;
+	u32 request_type;
+	u32 oid;
+	u32 dev_vc_handle;
+	u32 info_buflen;
+	u32 info_buf_offset;
+};
+
+/* CoNdisIndicateStatus message */
+struct rcondis_indicate_status {
+	u32 ndis_vc_handle;
+	u32 status;
+	u32 status_buflen;
+	u32 status_buf_offset;
+};
+
+/* CONDIS Call/VC parameters */
+struct rcondis_specific_parameters {
+	u32 parameter_type;
+	u32 parameter_length;
+	u32 parameter_lffset;
+};
+
+struct rcondis_media_parameters {
+	u32 flags;
+	u32 reserved1;
+	u32 reserved2;
+	struct rcondis_specific_parameters media_specific;
+};
+
+struct rndis_flowspec {
+	u32 token_rate;
+	u32 token_bucket_size;
+	u32 peak_bandwidth;
+	u32 latency;
+	u32 delay_variation;
+	u32 service_type;
+	u32 max_sdu_size;
+	u32 minimum_policed_size;
+};
+
+struct rcondis_call_manager_parameters {
+	struct rndis_flowspec transmit;
+	struct rndis_flowspec receive;
+	struct rcondis_specific_parameters call_mgr_specific;
+};
+
+/* CoNdisMiniportActivateVc message */
+struct rcondis_mp_activate_vc_request {
+	u32 req_id;
+	u32 flags;
+	u32 dev_vc_handle;
+	u32 media_params_offset;
+	u32 media_params_length;
+	u32 call_mgr_params_offset;
+	u32 call_mgr_params_length;
+};
+
+/* Response to CoNdisMiniportActivateVc */
+struct rcondis_mp_activate_vc_complete {
+	u32 req_id;
+	u32 status;
+};
+
+/* CoNdisMiniportDeactivateVc message */
+struct rcondis_mp_deactivate_vc_request {
+	u32 req_id;
+	u32 flags;
+	u32 dev_vc_handle;
+};
+
+/* Response to CoNdisMiniportDeactivateVc */
+struct rcondis_mp_deactivate_vc_complete {
+	u32 req_id;
+	u32 status;
+};
+
+
+/* union with all of the RNDIS messages */
+union rndis_message_container {
+	struct rndis_packet pkt;
+	struct rndis_initialize_request init_req;
+	struct rndis_halt_request halt_req;
+	struct rndis_query_request query_req;
+	struct rndis_set_request set_req;
+	struct rndis_reset_request reset_req;
+	struct rndis_keepalive_request keep_alive_req;
+	struct rndis_indicate_status indicate_status;
+	struct rndis_initialize_complete init_complete;
+	struct rndis_query_complete query_complete;
+	struct rndis_set_complete set_complete;
+	struct rndis_reset_complete reset_complete;
+	struct rndis_keepalive_complete keep_alive_complete;
+	struct rcondis_mp_create_vc co_miniport_create_vc;
+	struct rcondis_mp_delete_vc co_miniport_delete_vc;
+	struct rcondis_indicate_status co_indicate_status;
+	struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
+	struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
+	struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
+	struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
+	struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
+	struct rcondis_mp_deactivate_vc_complete
+		co_miniport_deactivate_vc_complete;
+};
+
+/* Remote NDIS message format */
+struct rndis_message {
+	u32 ndis_msg_type;
+
+	/* Total length of this message, from the beginning */
+	/* of the sruct rndis_message, in bytes. */
+	u32 msg_len;
+
+	/* Actual message */
+	union rndis_message_container msg;
+};
+
+
+struct rndis_filter_packet {
+	void *completion_ctx;
+	void (*completion)(void *context);
+	struct rndis_message msg;
+};
+
+/* Handy macros */
+
+/* get the size of an RNDIS message. Pass in the message type, */
+/* struct rndis_set_request, struct rndis_packet for example */
+#define RNDIS_MESSAGE_SIZE(msg)				\
+	(sizeof(msg) + (sizeof(struct rndis_message) -	\
+	 sizeof(union rndis_message_container)))
+
+/* get pointer to info buffer with message pointer */
+#define MESSAGE_TO_INFO_BUFFER(msg)				\
+	(((unsigned char *)(msg)) + msg->info_buf_offset)
+
+/* get pointer to status buffer with message pointer */
+#define MESSAGE_TO_STATUS_BUFFER(msg)			\
+	(((unsigned char *)(msg)) + msg->status_buf_offset)
+
+/* get pointer to OOBD buffer with message pointer */
+#define MESSAGE_TO_OOBD_BUFFER(msg)				\
+	(((unsigned char *)(msg)) + msg->oob_data_offset)
+
+/* get pointer to data buffer with message pointer */
+#define MESSAGE_TO_DATA_BUFFER(msg)				\
+	(((unsigned char *)(msg)) + msg->per_pkt_info_offset)
+
+/* get pointer to contained message from NDIS_MESSAGE pointer */
+#define RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(rndis_msg)		\
+	((void *) &rndis_msg->msg)
+
+/* get pointer to contained message from NDIS_MESSAGE pointer */
+#define RNDIS_MESSAGE_RAW_PTR_TO_MESSAGE_PTR(rndis_msg)	\
+	((void *) rndis_msg)
+
+
+#define __struct_bcount(x)
+
+
+
+#define RNDIS_HEADER_SIZE	(sizeof(struct rndis_message) - \
+				 sizeof(union rndis_message_container))
+
+#define NDIS_PACKET_TYPE_DIRECTED	0x00000001
+#define NDIS_PACKET_TYPE_MULTICAST	0x00000002
+#define NDIS_PACKET_TYPE_ALL_MULTICAST	0x00000004
+#define NDIS_PACKET_TYPE_BROADCAST	0x00000008
+#define NDIS_PACKET_TYPE_SOURCE_ROUTING	0x00000010
+#define NDIS_PACKET_TYPE_PROMISCUOUS	0x00000020
+#define NDIS_PACKET_TYPE_SMT		0x00000040
+#define NDIS_PACKET_TYPE_ALL_LOCAL	0x00000080
+#define NDIS_PACKET_TYPE_GROUP		0x00000100
+#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL	0x00000200
+#define NDIS_PACKET_TYPE_FUNCTIONAL	0x00000400
+#define NDIS_PACKET_TYPE_MAC_FRAME	0x00000800
+
+
+
+#endif /* _HYPERV_NET_H */
-- 
2.1.4