1 files changed, 0 insertions, 855 deletions

diff --git a/drivers/staging/hv/rndis_filter.c b/drivers/staging/hv/rndis_filter.c
deleted file mode 100644
index bafccb36004..00000000000
--- a/drivers/staging/hv/rndis_filter.c
+++ /dev/null
@@ -1,855 +0,0 @@
-/*
- * Copyright (c) 2009, Microsoft Corporation.
- *
- * 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>
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
-#include <linux/highmem.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/if_ether.h>
-#include <linux/netdevice.h>
-
-#include "hyperv_net.h"
-
-
-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];
-};
-
-struct rndis_request {
-	struct list_head list_ent;
-	struct completion  wait_event;
-
-	/*
-	 * FIXME: We assumed a fixed size response here. If we do ever need to
-	 * handle a bigger response, we can either define a max response
-	 * message or add a response buffer variable above this field
-	 */
-	struct rndis_message response_msg;
-
-	/* Simplify allocation by having a netvsc packet inline */
-	struct hv_netvsc_packet	pkt;
-	struct hv_page_buffer buf;
-	/* FIXME: We assumed a fixed size request here. */
-	struct rndis_message request_msg;
-};
-
-static void rndis_filter_send_completion(void *ctx);
-
-static void rndis_filter_send_request_completion(void *ctx);
-
-
-
-static struct rndis_device *get_rndis_device(void)
-{
-	struct rndis_device *device;
-
-	device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL);
-	if (!device)
-		return NULL;
-
-	spin_lock_init(&device->request_lock);
-
-	INIT_LIST_HEAD(&device->req_list);
-
-	device->state = RNDIS_DEV_UNINITIALIZED;
-
-	return device;
-}
-
-static struct rndis_request *get_rndis_request(struct rndis_device *dev,
-					     u32 msg_type,
-					     u32 msg_len)
-{
-	struct rndis_request *request;
-	struct rndis_message *rndis_msg;
-	struct rndis_set_request *set;
-	unsigned long flags;
-
-	request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL);
-	if (!request)
-		return NULL;
-
-	init_completion(&request->wait_event);
-
-	rndis_msg = &request->request_msg;
-	rndis_msg->ndis_msg_type = msg_type;
-	rndis_msg->msg_len = msg_len;
-
-	/*
-	 * Set the request id. This field is always after the rndis header for
-	 * request/response packet types so we just used the SetRequest as a
-	 * template
-	 */
-	set = &rndis_msg->msg.set_req;
-	set->req_id = atomic_inc_return(&dev->new_req_id);
-
-	/* Add to the request list */
-	spin_lock_irqsave(&dev->request_lock, flags);
-	list_add_tail(&request->list_ent, &dev->req_list);
-	spin_unlock_irqrestore(&dev->request_lock, flags);
-
-	return request;
-}
-
-static void put_rndis_request(struct rndis_device *dev,
-			    struct rndis_request *req)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev->request_lock, flags);
-	list_del(&req->list_ent);
-	spin_unlock_irqrestore(&dev->request_lock, flags);
-
-	kfree(req);
-}
-
-static void dump_rndis_message(struct hv_device *hv_dev,
-			struct rndis_message *rndis_msg)
-{
-	struct net_device *netdev;
-	struct netvsc_device *net_device;
-
-	net_device = hv_get_drvdata(hv_dev);
-	netdev = net_device->ndev;
-
-	switch (rndis_msg->ndis_msg_type) {
-	case REMOTE_NDIS_PACKET_MSG:
-		netdev_dbg(netdev, "REMOTE_NDIS_PACKET_MSG (len %u, "
-			   "data offset %u data len %u, # oob %u, "
-			   "oob offset %u, oob len %u, pkt offset %u, "
-			   "pkt len %u\n",
-			   rndis_msg->msg_len,
-			   rndis_msg->msg.pkt.data_offset,
-			   rndis_msg->msg.pkt.data_len,
-			   rndis_msg->msg.pkt.num_oob_data_elements,
-			   rndis_msg->msg.pkt.oob_data_offset,
-			   rndis_msg->msg.pkt.oob_data_len,
-			   rndis_msg->msg.pkt.per_pkt_info_offset,
-			   rndis_msg->msg.pkt.per_pkt_info_len);
-		break;
-
-	case REMOTE_NDIS_INITIALIZE_CMPLT:
-		netdev_dbg(netdev, "REMOTE_NDIS_INITIALIZE_CMPLT "
-			"(len %u, id 0x%x, status 0x%x, major %d, minor %d, "
-			"device flags %d, max xfer size 0x%x, max pkts %u, "
-			"pkt aligned %u)\n",
-			rndis_msg->msg_len,
-			rndis_msg->msg.init_complete.req_id,
-			rndis_msg->msg.init_complete.status,
-			rndis_msg->msg.init_complete.major_ver,
-			rndis_msg->msg.init_complete.minor_ver,
-			rndis_msg->msg.init_complete.dev_flags,
-			rndis_msg->msg.init_complete.max_xfer_size,
-			rndis_msg->msg.init_complete.
-			   max_pkt_per_msg,
-			rndis_msg->msg.init_complete.
-			   pkt_alignment_factor);
-		break;
-
-	case REMOTE_NDIS_QUERY_CMPLT:
-		netdev_dbg(netdev, "REMOTE_NDIS_QUERY_CMPLT "
-			"(len %u, id 0x%x, status 0x%x, buf len %u, "
-			"buf offset %u)\n",
-			rndis_msg->msg_len,
-			rndis_msg->msg.query_complete.req_id,
-			rndis_msg->msg.query_complete.status,
-			rndis_msg->msg.query_complete.
-			   info_buflen,
-			rndis_msg->msg.query_complete.
-			   info_buf_offset);
-		break;
-
-	case REMOTE_NDIS_SET_CMPLT:
-		netdev_dbg(netdev,
-			"REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)\n",
-			rndis_msg->msg_len,
-			rndis_msg->msg.set_complete.req_id,
-			rndis_msg->msg.set_complete.status);
-		break;
-
-	case REMOTE_NDIS_INDICATE_STATUS_MSG:
-		netdev_dbg(netdev, "REMOTE_NDIS_INDICATE_STATUS_MSG "
-			"(len %u, status 0x%x, buf len %u, buf offset %u)\n",
-			rndis_msg->msg_len,
-			rndis_msg->msg.indicate_status.status,
-			rndis_msg->msg.indicate_status.status_buflen,
-			rndis_msg->msg.indicate_status.status_buf_offset);
-		break;
-
-	default:
-		netdev_dbg(netdev, "0x%x (len %u)\n",
-			rndis_msg->ndis_msg_type,
-			rndis_msg->msg_len);
-		break;
-	}
-}
-
-static int rndis_filter_send_request(struct rndis_device *dev,
-				  struct rndis_request *req)
-{
-	int ret;
-	struct hv_netvsc_packet *packet;
-
-	/* Setup the packet to send it */
-	packet = &req->pkt;
-
-	packet->is_data_pkt = false;
-	packet->total_data_buflen = req->request_msg.msg_len;
-	packet->page_buf_cnt = 1;
-
-	packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >>
-					PAGE_SHIFT;
-	packet->page_buf[0].len = req->request_msg.msg_len;
-	packet->page_buf[0].offset =
-		(unsigned long)&req->request_msg & (PAGE_SIZE - 1);
-
-	packet->completion.send.send_completion_ctx = req;/* packet; */
-	packet->completion.send.send_completion =
-		rndis_filter_send_request_completion;
-	packet->completion.send.send_completion_tid = (unsigned long)dev;
-
-	ret = netvsc_send(dev->net_dev->dev, packet);
-	return ret;
-}
-
-static void rndis_filter_receive_response(struct rndis_device *dev,
-				       struct rndis_message *resp)
-{
-	struct rndis_request *request = NULL;
-	bool found = false;
-	unsigned long flags;
-	struct net_device *ndev;
-
-	ndev = dev->net_dev->ndev;
-
-	spin_lock_irqsave(&dev->request_lock, flags);
-	list_for_each_entry(request, &dev->req_list, list_ent) {
-		/*
-		 * All request/response message contains RequestId as the 1st
-		 * field
-		 */
-		if (request->request_msg.msg.init_req.req_id
-		    == resp->msg.init_complete.req_id) {
-			found = true;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&dev->request_lock, flags);
-
-	if (found) {
-		if (resp->msg_len <= sizeof(struct rndis_message)) {
-			memcpy(&request->response_msg, resp,
-			       resp->msg_len);
-		} else {
-			netdev_err(ndev,
-				"rndis response buffer overflow "
-				"detected (size %u max %zu)\n",
-				resp->msg_len,
-				sizeof(struct rndis_filter_packet));
-
-			if (resp->ndis_msg_type ==
-			    REMOTE_NDIS_RESET_CMPLT) {
-				/* does not have a request id field */
-				request->response_msg.msg.reset_complete.
-					status = STATUS_BUFFER_OVERFLOW;
-			} else {
-				request->response_msg.msg.
-				init_complete.status =
-					STATUS_BUFFER_OVERFLOW;
-			}
-		}
-
-		complete(&request->wait_event);
-	} else {
-		netdev_err(ndev,
-			"no rndis request found for this response "
-			"(id 0x%x res type 0x%x)\n",
-			resp->msg.init_complete.req_id,
-			resp->ndis_msg_type);
-	}
-}
-
-static void rndis_filter_receive_indicate_status(struct rndis_device *dev,
-					     struct rndis_message *resp)
-{
-	struct rndis_indicate_status *indicate =
-			&resp->msg.indicate_status;
-
-	if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) {
-		netvsc_linkstatus_callback(
-			dev->net_dev->dev, 1);
-	} else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) {
-		netvsc_linkstatus_callback(
-			dev->net_dev->dev, 0);
-	} else {
-		/*
-		 * TODO:
-		 */
-	}
-}
-
-static void rndis_filter_receive_data(struct rndis_device *dev,
-				   struct rndis_message *msg,
-				   struct hv_netvsc_packet *pkt)
-{
-	struct rndis_packet *rndis_pkt;
-	u32 data_offset;
-	int i;
-
-	rndis_pkt = &msg->msg.pkt;
-
-	/*
-	 * FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this
-	 * netvsc packet (ie TotalDataBufferLength != MessageLength)
-	 */
-
-	/* Remove the rndis header and pass it back up the stack */
-	data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset;
-
-	pkt->total_data_buflen -= data_offset;
-	pkt->page_buf[0].offset += data_offset;
-	pkt->page_buf[0].len -= data_offset;
-
-	/* Drop the 0th page, if rndis data go beyond page boundary */
-	if (pkt->page_buf[0].offset >= PAGE_SIZE) {
-		pkt->page_buf[1].offset = pkt->page_buf[0].offset - PAGE_SIZE;
-		pkt->page_buf[1].len -= pkt->page_buf[1].offset;
-		pkt->page_buf_cnt--;
-		for (i = 0; i < pkt->page_buf_cnt; i++)
-			pkt->page_buf[i] = pkt->page_buf[i+1];
-	}
-
-	pkt->is_data_pkt = true;
-
-	netvsc_recv_callback(dev->net_dev->dev, pkt);
-}
-
-int rndis_filter_receive(struct hv_device *dev,
-				struct hv_netvsc_packet	*pkt)
-{
-	struct netvsc_device *net_dev = hv_get_drvdata(dev);
-	struct rndis_device *rndis_dev;
-	struct rndis_message rndis_msg;
-	struct rndis_message *rndis_hdr;
-	struct net_device *ndev;
-
-	if (!net_dev)
-		return -EINVAL;
-
-	ndev = net_dev->ndev;
-
-	/* Make sure the rndis device state is initialized */
-	if (!net_dev->extension) {
-		netdev_err(ndev, "got rndis message but no rndis device - "
-			  "dropping this message!\n");
-		return -ENODEV;
-	}
-
-	rndis_dev = (struct rndis_device *)net_dev->extension;
-	if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) {
-		netdev_err(ndev, "got rndis message but rndis device "
-			   "uninitialized...dropping this message!\n");
-		return -ENODEV;
-	}
-
-	rndis_hdr = (struct rndis_message *)kmap_atomic(
-			pfn_to_page(pkt->page_buf[0].pfn), KM_IRQ0);
-
-	rndis_hdr = (void *)((unsigned long)rndis_hdr +
-			pkt->page_buf[0].offset);
-
-	/* Make sure we got a valid rndis message */
-	if ((rndis_hdr->ndis_msg_type != REMOTE_NDIS_PACKET_MSG) &&
-	    (rndis_hdr->msg_len > sizeof(struct rndis_message))) {
-		netdev_err(ndev, "incoming rndis message buffer overflow "
-			   "detected (got %u, max %zu)..marking it an error!\n",
-			   rndis_hdr->msg_len,
-			   sizeof(struct rndis_message));
-	}
-
-	memcpy(&rndis_msg, rndis_hdr,
-		(rndis_hdr->msg_len > sizeof(struct rndis_message)) ?
-			sizeof(struct rndis_message) :
-			rndis_hdr->msg_len);
-
-	kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, KM_IRQ0);
-
-	dump_rndis_message(dev, &rndis_msg);
-
-	switch (rndis_msg.ndis_msg_type) {
-	case REMOTE_NDIS_PACKET_MSG:
-		/* data msg */
-		rndis_filter_receive_data(rndis_dev, &rndis_msg, pkt);
-		break;
-
-	case REMOTE_NDIS_INITIALIZE_CMPLT:
-	case REMOTE_NDIS_QUERY_CMPLT:
-	case REMOTE_NDIS_SET_CMPLT:
-		/* completion msgs */
-		rndis_filter_receive_response(rndis_dev, &rndis_msg);
-		break;
-
-	case REMOTE_NDIS_INDICATE_STATUS_MSG:
-		/* notification msgs */
-		rndis_filter_receive_indicate_status(rndis_dev, &rndis_msg);
-		break;
-	default:
-		netdev_err(ndev,
-			"unhandled rndis message (type %u len %u)\n",
-			   rndis_msg.ndis_msg_type,
-			   rndis_msg.msg_len);
-		break;
-	}
-
-	return 0;
-}
-
-static int rndis_filter_query_device(struct rndis_device *dev, u32 oid,
-				  void *result, u32 *result_size)
-{
-	struct rndis_request *request;
-	u32 inresult_size = *result_size;
-	struct rndis_query_request *query;
-	struct rndis_query_complete *query_complete;
-	int ret = 0;
-	int t;
-
-	if (!result)
-		return -EINVAL;
-
-	*result_size = 0;
-	request = get_rndis_request(dev, REMOTE_NDIS_QUERY_MSG,
-			RNDIS_MESSAGE_SIZE(struct rndis_query_request));
-	if (!request) {
-		ret = -ENOMEM;
-		goto cleanup;
-	}
-
-	/* Setup the rndis query */
-	query = &request->request_msg.msg.query_req;
-	query->oid = oid;
-	query->info_buf_offset = sizeof(struct rndis_query_request);
-	query->info_buflen = 0;
-	query->dev_vc_handle = 0;
-
-	ret = rndis_filter_send_request(dev, request);
-	if (ret != 0)
-		goto cleanup;
-
-	t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
-	if (t == 0) {
-		ret = -ETIMEDOUT;
-		goto cleanup;
-	}
-
-	/* Copy the response back */
-	query_complete = &request->response_msg.msg.query_complete;
-
-	if (query_complete->info_buflen > inresult_size) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	memcpy(result,
-	       (void *)((unsigned long)query_complete +
-			 query_complete->info_buf_offset),
-	       query_complete->info_buflen);
-
-	*result_size = query_complete->info_buflen;
-
-cleanup:
-	if (request)
-		put_rndis_request(dev, request);
-
-	return ret;
-}
-
-static int rndis_filter_query_device_mac(struct rndis_device *dev)
-{
-	u32 size = ETH_ALEN;
-
-	return rndis_filter_query_device(dev,
-				      RNDIS_OID_802_3_PERMANENT_ADDRESS,
-				      dev->hw_mac_adr, &size);
-}
-
-static int rndis_filter_query_device_link_status(struct rndis_device *dev)
-{
-	u32 size = sizeof(u32);
-	u32 link_status;
-	int ret;
-
-	ret = rndis_filter_query_device(dev,
-				      RNDIS_OID_GEN_MEDIA_CONNECT_STATUS,
-				      &link_status, &size);
-	dev->link_state = (link_status != 0) ? true : false;
-
-	return ret;
-}
-
-static int rndis_filter_set_packet_filter(struct rndis_device *dev,
-				      u32 new_filter)
-{
-	struct rndis_request *request;
-	struct rndis_set_request *set;
-	struct rndis_set_complete *set_complete;
-	u32 status;
-	int ret, t;
-	struct net_device *ndev;
-
-	ndev = dev->net_dev->ndev;
-
-	request = get_rndis_request(dev, REMOTE_NDIS_SET_MSG,
-			RNDIS_MESSAGE_SIZE(struct rndis_set_request) +
-			sizeof(u32));
-	if (!request) {
-		ret = -ENOMEM;
-		goto cleanup;
-	}
-
-	/* Setup the rndis set */
-	set = &request->request_msg.msg.set_req;
-	set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER;
-	set->info_buflen = sizeof(u32);
-	set->info_buf_offset = sizeof(struct rndis_set_request);
-
-	memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request),
-	       &new_filter, sizeof(u32));
-
-	ret = rndis_filter_send_request(dev, request);
-	if (ret != 0)
-		goto cleanup;
-
-	t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
-
-	if (t == 0) {
-		netdev_err(ndev,
-			"timeout before we got a set response...\n");
-		/*
-		 * We can't deallocate the request since we may still receive a
-		 * send completion for it.
-		 */
-		goto exit;
-	} else {
-		set_complete = &request->response_msg.msg.set_complete;
-		status = set_complete->status;
-	}
-
-cleanup:
-	if (request)
-		put_rndis_request(dev, request);
-exit:
-	return ret;
-}
-
-
-static int rndis_filter_init_device(struct rndis_device *dev)
-{
-	struct rndis_request *request;
-	struct rndis_initialize_request *init;
-	struct rndis_initialize_complete *init_complete;
-	u32 status;
-	int ret, t;
-
-	request = get_rndis_request(dev, REMOTE_NDIS_INITIALIZE_MSG,
-			RNDIS_MESSAGE_SIZE(struct rndis_initialize_request));
-	if (!request) {
-		ret = -ENOMEM;
-		goto cleanup;
-	}
-
-	/* Setup the rndis set */
-	init = &request->request_msg.msg.init_req;
-	init->major_ver = RNDIS_MAJOR_VERSION;
-	init->minor_ver = RNDIS_MINOR_VERSION;
-	/* FIXME: Use 1536 - rounded ethernet frame size */
-	init->max_xfer_size = 2048;
-
-	dev->state = RNDIS_DEV_INITIALIZING;
-
-	ret = rndis_filter_send_request(dev, request);
-	if (ret != 0) {
-		dev->state = RNDIS_DEV_UNINITIALIZED;
-		goto cleanup;
-	}
-
-
-	t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
-
-	if (t == 0) {
-		ret = -ETIMEDOUT;
-		goto cleanup;
-	}
-
-	init_complete = &request->response_msg.msg.init_complete;
-	status = init_complete->status;
-	if (status == RNDIS_STATUS_SUCCESS) {
-		dev->state = RNDIS_DEV_INITIALIZED;
-		ret = 0;
-	} else {
-		dev->state = RNDIS_DEV_UNINITIALIZED;
-		ret = -EINVAL;
-	}
-
-cleanup:
-	if (request)
-		put_rndis_request(dev, request);
-
-	return ret;
-}
-
-static void rndis_filter_halt_device(struct rndis_device *dev)
-{
-	struct rndis_request *request;
-	struct rndis_halt_request *halt;
-
-	/* Attempt to do a rndis device halt */
-	request = get_rndis_request(dev, REMOTE_NDIS_HALT_MSG,
-				RNDIS_MESSAGE_SIZE(struct rndis_halt_request));
-	if (!request)
-		goto cleanup;
-
-	/* Setup the rndis set */
-	halt = &request->request_msg.msg.halt_req;
-	halt->req_id = atomic_inc_return(&dev->new_req_id);
-
-	/* Ignore return since this msg is optional. */
-	rndis_filter_send_request(dev, request);
-
-	dev->state = RNDIS_DEV_UNINITIALIZED;
-
-cleanup:
-	if (request)
-		put_rndis_request(dev, request);
-	return;
-}
-
-static int rndis_filter_open_device(struct rndis_device *dev)
-{
-	int ret;
-
-	if (dev->state != RNDIS_DEV_INITIALIZED)
-		return 0;
-
-	ret = rndis_filter_set_packet_filter(dev,
-					 NDIS_PACKET_TYPE_BROADCAST |
-					 NDIS_PACKET_TYPE_ALL_MULTICAST |
-					 NDIS_PACKET_TYPE_DIRECTED);
-	if (ret == 0)
-		dev->state = RNDIS_DEV_DATAINITIALIZED;
-
-	return ret;
-}
-
-static int rndis_filter_close_device(struct rndis_device *dev)
-{
-	int ret;
-
-	if (dev->state != RNDIS_DEV_DATAINITIALIZED)
-		return 0;
-
-	ret = rndis_filter_set_packet_filter(dev, 0);
-	if (ret == 0)
-		dev->state = RNDIS_DEV_INITIALIZED;
-
-	return ret;
-}
-
-int rndis_filter_device_add(struct hv_device *dev,
-				  void *additional_info)
-{
-	int ret;
-	struct netvsc_device *net_device;
-	struct rndis_device *rndis_device;
-	struct netvsc_device_info *device_info = additional_info;
-
-	rndis_device = get_rndis_device();
-	if (!rndis_device)
-		return -ENODEV;
-
-	/*
-	 * Let the inner driver handle this first to create the netvsc channel
-	 * NOTE! Once the channel is created, we may get a receive callback
-	 * (RndisFilterOnReceive()) before this call is completed
-	 */
-	ret = netvsc_device_add(dev, additional_info);
-	if (ret != 0) {
-		kfree(rndis_device);
-		return ret;
-	}
-
-
-	/* Initialize the rndis device */
-	net_device = hv_get_drvdata(dev);
-
-	net_device->extension = rndis_device;
-	rndis_device->net_dev = net_device;
-
-	/* Send the rndis initialization message */
-	ret = rndis_filter_init_device(rndis_device);
-	if (ret != 0) {
-		/*
-		 * TODO: If rndis init failed, we will need to shut down the
-		 * channel
-		 */
-	}
-
-	/* Get the mac address */
-	ret = rndis_filter_query_device_mac(rndis_device);
-	if (ret != 0) {
-		/*
-		 * TODO: shutdown rndis device and the channel
-		 */
-	}
-
-	memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN);
-
-	rndis_filter_query_device_link_status(rndis_device);
-
-	device_info->link_state = rndis_device->link_state;
-
-	dev_info(&dev->device, "Device MAC %pM link state %s\n",
-		 rndis_device->hw_mac_adr,
-		 device_info->link_state ? "down" : "up");
-
-	return ret;
-}
-
-void rndis_filter_device_remove(struct hv_device *dev)
-{
-	struct netvsc_device *net_dev = hv_get_drvdata(dev);
-	struct rndis_device *rndis_dev = net_dev->extension;
-
-	/* Halt and release the rndis device */
-	rndis_filter_halt_device(rndis_dev);
-
-	kfree(rndis_dev);
-	net_dev->extension = NULL;
-
-	netvsc_device_remove(dev);
-}
-
-
-int rndis_filter_open(struct hv_device *dev)
-{
-	struct netvsc_device *net_device = hv_get_drvdata(dev);
-
-	if (!net_device)
-		return -EINVAL;
-
-	return rndis_filter_open_device(net_device->extension);
-}
-
-int rndis_filter_close(struct hv_device *dev)
-{
-	struct netvsc_device *netDevice = hv_get_drvdata(dev);
-
-	if (!netDevice)
-		return -EINVAL;
-
-	return rndis_filter_close_device(netDevice->extension);
-}
-
-int rndis_filter_send(struct hv_device *dev,
-			     struct hv_netvsc_packet *pkt)
-{
-	int ret;
-	struct rndis_filter_packet *filterPacket;
-	struct rndis_message *rndisMessage;
-	struct rndis_packet *rndisPacket;
-	u32 rndisMessageSize;
-
-	/* Add the rndis header */
-	filterPacket = (struct rndis_filter_packet *)pkt->extension;
-
-	memset(filterPacket, 0, sizeof(struct rndis_filter_packet));
-
-	rndisMessage = &filterPacket->msg;
-	rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet);
-
-	rndisMessage->ndis_msg_type = REMOTE_NDIS_PACKET_MSG;
-	rndisMessage->msg_len = pkt->total_data_buflen +
-				      rndisMessageSize;
-
-	rndisPacket = &rndisMessage->msg.pkt;
-	rndisPacket->data_offset = sizeof(struct rndis_packet);
-	rndisPacket->data_len = pkt->total_data_buflen;
-
-	pkt->is_data_pkt = true;
-	pkt->page_buf[0].pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT;
-	pkt->page_buf[0].offset =
-			(unsigned long)rndisMessage & (PAGE_SIZE-1);
-	pkt->page_buf[0].len = rndisMessageSize;
-
-	/* Save the packet send completion and context */
-	filterPacket->completion = pkt->completion.send.send_completion;
-	filterPacket->completion_ctx =
-				pkt->completion.send.send_completion_ctx;
-
-	/* Use ours */
-	pkt->completion.send.send_completion = rndis_filter_send_completion;
-	pkt->completion.send.send_completion_ctx = filterPacket;
-
-	ret = netvsc_send(dev, pkt);
-	if (ret != 0) {
-		/*
-		 * Reset the completion to originals to allow retries from
-		 * above
-		 */
-		pkt->completion.send.send_completion =
-				filterPacket->completion;
-		pkt->completion.send.send_completion_ctx =
-				filterPacket->completion_ctx;
-	}
-
-	return ret;
-}
-
-static void rndis_filter_send_completion(void *ctx)
-{
-	struct rndis_filter_packet *filterPacket = ctx;
-
-	/* Pass it back to the original handler */
-	filterPacket->completion(filterPacket->completion_ctx);
-}
-
-
-static void rndis_filter_send_request_completion(void *ctx)
-{
-	/* Noop */
-}