![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Conflicts: drivers/staging/arlan/arlan-main.c drivers/staging/comedi/drivers/cb_das16_cs.c drivers/staging/cx25821/cx25821-alsa.c drivers/staging/dt3155/dt3155_drv.c drivers/staging/hv/hv.c drivers/staging/netwave/netwave_cs.c drivers/staging/wavelan/wavelan.c drivers/staging/wavelan/wavelan_cs.c drivers/staging/wlags49_h2/wl_cs.c This required a bit of hand merging due to the conflicts that happened in the later .34-rc releases, as well as some staging driver changing coming in through other trees (v4l and pcmcia). Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
999 lines
26 KiB
C
999 lines
26 KiB
C
/*
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* Copyright (c) 2009, Microsoft Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Authors:
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* Haiyang Zhang <haiyangz@microsoft.com>
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* Hank Janssen <hjanssen@microsoft.com>
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*/
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#include <linux/kernel.h>
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#include <linux/highmem.h>
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#include <linux/slab.h>
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#include <linux/io.h>
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#include <linux/if_ether.h>
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#include "osd.h"
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#include "logging.h"
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#include "netvsc_api.h"
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#include "rndis_filter.h"
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/* Data types */
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struct rndis_filter_driver_object {
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/* The original driver */
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struct netvsc_driver InnerDriver;
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};
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enum rndis_device_state {
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RNDIS_DEV_UNINITIALIZED = 0,
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RNDIS_DEV_INITIALIZING,
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RNDIS_DEV_INITIALIZED,
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RNDIS_DEV_DATAINITIALIZED,
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};
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struct rndis_device {
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struct netvsc_device *NetDevice;
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enum rndis_device_state State;
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u32 LinkStatus;
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atomic_t NewRequestId;
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spinlock_t request_lock;
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struct list_head RequestList;
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unsigned char HwMacAddr[ETH_ALEN];
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};
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struct rndis_request {
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struct list_head ListEntry;
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struct osd_waitevent *WaitEvent;
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/*
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* FIXME: We assumed a fixed size response here. If we do ever need to
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* handle a bigger response, we can either define a max response
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* message or add a response buffer variable above this field
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*/
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struct rndis_message ResponseMessage;
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/* Simplify allocation by having a netvsc packet inline */
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struct hv_netvsc_packet Packet;
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struct hv_page_buffer Buffer;
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/* FIXME: We assumed a fixed size request here. */
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struct rndis_message RequestMessage;
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};
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struct rndis_filter_packet {
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void *CompletionContext;
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void (*OnCompletion)(void *context);
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struct rndis_message Message;
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};
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static int RndisFilterOnDeviceAdd(struct hv_device *Device,
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void *AdditionalInfo);
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static int RndisFilterOnDeviceRemove(struct hv_device *Device);
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static void RndisFilterOnCleanup(struct hv_driver *Driver);
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static int RndisFilterOnSend(struct hv_device *Device,
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struct hv_netvsc_packet *Packet);
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static void RndisFilterOnSendCompletion(void *Context);
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static void RndisFilterOnSendRequestCompletion(void *Context);
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/* The one and only */
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static struct rndis_filter_driver_object gRndisFilter;
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static struct rndis_device *GetRndisDevice(void)
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{
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struct rndis_device *device;
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device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL);
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if (!device)
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return NULL;
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spin_lock_init(&device->request_lock);
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INIT_LIST_HEAD(&device->RequestList);
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device->State = RNDIS_DEV_UNINITIALIZED;
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return device;
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}
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static struct rndis_request *GetRndisRequest(struct rndis_device *Device,
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u32 MessageType,
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u32 MessageLength)
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{
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struct rndis_request *request;
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struct rndis_message *rndisMessage;
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struct rndis_set_request *set;
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unsigned long flags;
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request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL);
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if (!request)
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return NULL;
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request->WaitEvent = osd_WaitEventCreate();
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if (!request->WaitEvent) {
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kfree(request);
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return NULL;
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}
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rndisMessage = &request->RequestMessage;
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rndisMessage->NdisMessageType = MessageType;
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rndisMessage->MessageLength = MessageLength;
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/*
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* Set the request id. This field is always after the rndis header for
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* request/response packet types so we just used the SetRequest as a
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* template
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*/
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set = &rndisMessage->Message.SetRequest;
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set->RequestId = atomic_inc_return(&Device->NewRequestId);
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/* Add to the request list */
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spin_lock_irqsave(&Device->request_lock, flags);
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list_add_tail(&request->ListEntry, &Device->RequestList);
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spin_unlock_irqrestore(&Device->request_lock, flags);
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return request;
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}
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static void PutRndisRequest(struct rndis_device *Device,
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struct rndis_request *Request)
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{
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unsigned long flags;
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spin_lock_irqsave(&Device->request_lock, flags);
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list_del(&Request->ListEntry);
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spin_unlock_irqrestore(&Device->request_lock, flags);
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kfree(Request->WaitEvent);
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kfree(Request);
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}
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static void DumpRndisMessage(struct rndis_message *RndisMessage)
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{
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switch (RndisMessage->NdisMessageType) {
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case REMOTE_NDIS_PACKET_MSG:
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DPRINT_DBG(NETVSC, "REMOTE_NDIS_PACKET_MSG (len %u, "
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"data offset %u data len %u, # oob %u, "
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"oob offset %u, oob len %u, pkt offset %u, "
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"pkt len %u",
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RndisMessage->MessageLength,
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RndisMessage->Message.Packet.DataOffset,
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RndisMessage->Message.Packet.DataLength,
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RndisMessage->Message.Packet.NumOOBDataElements,
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RndisMessage->Message.Packet.OOBDataOffset,
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RndisMessage->Message.Packet.OOBDataLength,
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RndisMessage->Message.Packet.PerPacketInfoOffset,
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RndisMessage->Message.Packet.PerPacketInfoLength);
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break;
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case REMOTE_NDIS_INITIALIZE_CMPLT:
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DPRINT_DBG(NETVSC, "REMOTE_NDIS_INITIALIZE_CMPLT "
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"(len %u, id 0x%x, status 0x%x, major %d, minor %d, "
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"device flags %d, max xfer size 0x%x, max pkts %u, "
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"pkt aligned %u)",
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RndisMessage->MessageLength,
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RndisMessage->Message.InitializeComplete.RequestId,
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RndisMessage->Message.InitializeComplete.Status,
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RndisMessage->Message.InitializeComplete.MajorVersion,
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RndisMessage->Message.InitializeComplete.MinorVersion,
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RndisMessage->Message.InitializeComplete.DeviceFlags,
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RndisMessage->Message.InitializeComplete.MaxTransferSize,
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RndisMessage->Message.InitializeComplete.MaxPacketsPerMessage,
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RndisMessage->Message.InitializeComplete.PacketAlignmentFactor);
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break;
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case REMOTE_NDIS_QUERY_CMPLT:
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DPRINT_DBG(NETVSC, "REMOTE_NDIS_QUERY_CMPLT "
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"(len %u, id 0x%x, status 0x%x, buf len %u, "
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"buf offset %u)",
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RndisMessage->MessageLength,
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RndisMessage->Message.QueryComplete.RequestId,
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RndisMessage->Message.QueryComplete.Status,
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RndisMessage->Message.QueryComplete.InformationBufferLength,
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RndisMessage->Message.QueryComplete.InformationBufferOffset);
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break;
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case REMOTE_NDIS_SET_CMPLT:
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DPRINT_DBG(NETVSC,
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"REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)",
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RndisMessage->MessageLength,
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RndisMessage->Message.SetComplete.RequestId,
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RndisMessage->Message.SetComplete.Status);
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break;
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case REMOTE_NDIS_INDICATE_STATUS_MSG:
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DPRINT_DBG(NETVSC, "REMOTE_NDIS_INDICATE_STATUS_MSG "
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"(len %u, status 0x%x, buf len %u, buf offset %u)",
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RndisMessage->MessageLength,
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RndisMessage->Message.IndicateStatus.Status,
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RndisMessage->Message.IndicateStatus.StatusBufferLength,
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RndisMessage->Message.IndicateStatus.StatusBufferOffset);
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break;
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default:
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DPRINT_DBG(NETVSC, "0x%x (len %u)",
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RndisMessage->NdisMessageType,
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RndisMessage->MessageLength);
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break;
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}
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}
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static int RndisFilterSendRequest(struct rndis_device *Device,
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struct rndis_request *Request)
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{
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int ret;
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struct hv_netvsc_packet *packet;
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DPRINT_ENTER(NETVSC);
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/* Setup the packet to send it */
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packet = &Request->Packet;
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packet->IsDataPacket = false;
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packet->TotalDataBufferLength = Request->RequestMessage.MessageLength;
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packet->PageBufferCount = 1;
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packet->PageBuffers[0].Pfn = virt_to_phys(&Request->RequestMessage) >>
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PAGE_SHIFT;
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packet->PageBuffers[0].Length = Request->RequestMessage.MessageLength;
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packet->PageBuffers[0].Offset =
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(unsigned long)&Request->RequestMessage & (PAGE_SIZE - 1);
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packet->Completion.Send.SendCompletionContext = Request;/* packet; */
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packet->Completion.Send.OnSendCompletion =
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RndisFilterOnSendRequestCompletion;
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packet->Completion.Send.SendCompletionTid = (unsigned long)Device;
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ret = gRndisFilter.InnerDriver.OnSend(Device->NetDevice->Device, packet);
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DPRINT_EXIT(NETVSC);
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return ret;
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}
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static void RndisFilterReceiveResponse(struct rndis_device *Device,
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struct rndis_message *Response)
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{
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struct rndis_request *request = NULL;
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bool found = false;
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unsigned long flags;
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DPRINT_ENTER(NETVSC);
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spin_lock_irqsave(&Device->request_lock, flags);
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list_for_each_entry(request, &Device->RequestList, ListEntry) {
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/*
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* All request/response message contains RequestId as the 1st
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* field
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*/
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if (request->RequestMessage.Message.InitializeRequest.RequestId
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== Response->Message.InitializeComplete.RequestId) {
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DPRINT_DBG(NETVSC, "found rndis request for "
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"this response (id 0x%x req type 0x%x res "
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"type 0x%x)",
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request->RequestMessage.Message.InitializeRequest.RequestId,
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request->RequestMessage.NdisMessageType,
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Response->NdisMessageType);
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found = true;
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break;
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}
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}
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spin_unlock_irqrestore(&Device->request_lock, flags);
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if (found) {
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if (Response->MessageLength <= sizeof(struct rndis_message)) {
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memcpy(&request->ResponseMessage, Response,
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Response->MessageLength);
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} else {
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DPRINT_ERR(NETVSC, "rndis response buffer overflow "
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"detected (size %u max %zu)",
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Response->MessageLength,
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sizeof(struct rndis_filter_packet));
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if (Response->NdisMessageType ==
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REMOTE_NDIS_RESET_CMPLT) {
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/* does not have a request id field */
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request->ResponseMessage.Message.ResetComplete.Status = STATUS_BUFFER_OVERFLOW;
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} else {
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request->ResponseMessage.Message.InitializeComplete.Status = STATUS_BUFFER_OVERFLOW;
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}
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}
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osd_WaitEventSet(request->WaitEvent);
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} else {
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DPRINT_ERR(NETVSC, "no rndis request found for this response "
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"(id 0x%x res type 0x%x)",
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Response->Message.InitializeComplete.RequestId,
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Response->NdisMessageType);
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}
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DPRINT_EXIT(NETVSC);
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}
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static void RndisFilterReceiveIndicateStatus(struct rndis_device *Device,
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struct rndis_message *Response)
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{
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struct rndis_indicate_status *indicate =
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&Response->Message.IndicateStatus;
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if (indicate->Status == RNDIS_STATUS_MEDIA_CONNECT) {
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gRndisFilter.InnerDriver.OnLinkStatusChanged(Device->NetDevice->Device, 1);
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} else if (indicate->Status == RNDIS_STATUS_MEDIA_DISCONNECT) {
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gRndisFilter.InnerDriver.OnLinkStatusChanged(Device->NetDevice->Device, 0);
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} else {
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/*
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* TODO:
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*/
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}
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}
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static void RndisFilterReceiveData(struct rndis_device *Device,
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struct rndis_message *Message,
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struct hv_netvsc_packet *Packet)
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{
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struct rndis_packet *rndisPacket;
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u32 dataOffset;
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DPRINT_ENTER(NETVSC);
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/* empty ethernet frame ?? */
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/* ASSERT(Packet->PageBuffers[0].Length > */
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/* RNDIS_MESSAGE_SIZE(struct rndis_packet)); */
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rndisPacket = &Message->Message.Packet;
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/*
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* FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this
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* netvsc packet (ie TotalDataBufferLength != MessageLength)
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*/
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/* Remove the rndis header and pass it back up the stack */
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dataOffset = RNDIS_HEADER_SIZE + rndisPacket->DataOffset;
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Packet->TotalDataBufferLength -= dataOffset;
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Packet->PageBuffers[0].Offset += dataOffset;
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Packet->PageBuffers[0].Length -= dataOffset;
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Packet->IsDataPacket = true;
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gRndisFilter.InnerDriver.OnReceiveCallback(Device->NetDevice->Device,
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Packet);
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DPRINT_EXIT(NETVSC);
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}
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static int RndisFilterOnReceive(struct hv_device *Device,
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struct hv_netvsc_packet *Packet)
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{
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struct netvsc_device *netDevice = Device->Extension;
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struct rndis_device *rndisDevice;
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struct rndis_message rndisMessage;
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struct rndis_message *rndisHeader;
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DPRINT_ENTER(NETVSC);
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if (!netDevice)
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return -EINVAL;
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/* Make sure the rndis device state is initialized */
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if (!netDevice->Extension) {
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DPRINT_ERR(NETVSC, "got rndis message but no rndis device..."
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"dropping this message!");
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DPRINT_EXIT(NETVSC);
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return -1;
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}
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rndisDevice = (struct rndis_device *)netDevice->Extension;
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if (rndisDevice->State == RNDIS_DEV_UNINITIALIZED) {
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DPRINT_ERR(NETVSC, "got rndis message but rndis device "
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"uninitialized...dropping this message!");
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DPRINT_EXIT(NETVSC);
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return -1;
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}
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rndisHeader = (struct rndis_message *)kmap_atomic(
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pfn_to_page(Packet->PageBuffers[0].Pfn), KM_IRQ0);
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rndisHeader = (void *)((unsigned long)rndisHeader +
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Packet->PageBuffers[0].Offset);
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/* Make sure we got a valid rndis message */
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/*
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* FIXME: There seems to be a bug in set completion msg where its
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* MessageLength is 16 bytes but the ByteCount field in the xfer page
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* range shows 52 bytes
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* */
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#if 0
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if (Packet->TotalDataBufferLength != rndisHeader->MessageLength) {
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kunmap_atomic(rndisHeader - Packet->PageBuffers[0].Offset,
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KM_IRQ0);
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DPRINT_ERR(NETVSC, "invalid rndis message? (expected %u "
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"bytes got %u)...dropping this message!",
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rndisHeader->MessageLength,
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Packet->TotalDataBufferLength);
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DPRINT_EXIT(NETVSC);
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return -1;
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}
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#endif
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if ((rndisHeader->NdisMessageType != REMOTE_NDIS_PACKET_MSG) &&
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(rndisHeader->MessageLength > sizeof(struct rndis_message))) {
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DPRINT_ERR(NETVSC, "incoming rndis message buffer overflow "
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"detected (got %u, max %zu)...marking it an error!",
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rndisHeader->MessageLength,
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sizeof(struct rndis_message));
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}
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memcpy(&rndisMessage, rndisHeader,
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(rndisHeader->MessageLength > sizeof(struct rndis_message)) ?
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sizeof(struct rndis_message) :
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rndisHeader->MessageLength);
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kunmap_atomic(rndisHeader - Packet->PageBuffers[0].Offset, KM_IRQ0);
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DumpRndisMessage(&rndisMessage);
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switch (rndisMessage.NdisMessageType) {
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case REMOTE_NDIS_PACKET_MSG:
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/* data msg */
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RndisFilterReceiveData(rndisDevice, &rndisMessage, Packet);
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break;
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case REMOTE_NDIS_INITIALIZE_CMPLT:
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case REMOTE_NDIS_QUERY_CMPLT:
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case REMOTE_NDIS_SET_CMPLT:
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/* case REMOTE_NDIS_RESET_CMPLT: */
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/* case REMOTE_NDIS_KEEPALIVE_CMPLT: */
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/* completion msgs */
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RndisFilterReceiveResponse(rndisDevice, &rndisMessage);
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break;
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case REMOTE_NDIS_INDICATE_STATUS_MSG:
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/* notification msgs */
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RndisFilterReceiveIndicateStatus(rndisDevice, &rndisMessage);
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break;
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default:
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DPRINT_ERR(NETVSC, "unhandled rndis message (type %u len %u)",
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rndisMessage.NdisMessageType,
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rndisMessage.MessageLength);
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break;
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}
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DPRINT_EXIT(NETVSC);
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return 0;
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}
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static int RndisFilterQueryDevice(struct rndis_device *Device, u32 Oid,
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void *Result, u32 *ResultSize)
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{
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struct rndis_request *request;
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u32 inresultSize = *ResultSize;
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struct rndis_query_request *query;
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struct rndis_query_complete *queryComplete;
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int ret = 0;
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DPRINT_ENTER(NETVSC);
|
|
|
|
if (!Result)
|
|
return -EINVAL;
|
|
|
|
*ResultSize = 0;
|
|
request = GetRndisRequest(Device, REMOTE_NDIS_QUERY_MSG,
|
|
RNDIS_MESSAGE_SIZE(struct rndis_query_request));
|
|
if (!request) {
|
|
ret = -1;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Setup the rndis query */
|
|
query = &request->RequestMessage.Message.QueryRequest;
|
|
query->Oid = Oid;
|
|
query->InformationBufferOffset = sizeof(struct rndis_query_request);
|
|
query->InformationBufferLength = 0;
|
|
query->DeviceVcHandle = 0;
|
|
|
|
ret = RndisFilterSendRequest(Device, request);
|
|
if (ret != 0)
|
|
goto Cleanup;
|
|
|
|
osd_WaitEventWait(request->WaitEvent);
|
|
|
|
/* Copy the response back */
|
|
queryComplete = &request->ResponseMessage.Message.QueryComplete;
|
|
|
|
if (queryComplete->InformationBufferLength > inresultSize) {
|
|
ret = -1;
|
|
goto Cleanup;
|
|
}
|
|
|
|
memcpy(Result,
|
|
(void *)((unsigned long)queryComplete +
|
|
queryComplete->InformationBufferOffset),
|
|
queryComplete->InformationBufferLength);
|
|
|
|
*ResultSize = queryComplete->InformationBufferLength;
|
|
|
|
Cleanup:
|
|
if (request)
|
|
PutRndisRequest(Device, request);
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int RndisFilterQueryDeviceMac(struct rndis_device *Device)
|
|
{
|
|
u32 size = ETH_ALEN;
|
|
|
|
return RndisFilterQueryDevice(Device,
|
|
RNDIS_OID_802_3_PERMANENT_ADDRESS,
|
|
Device->HwMacAddr, &size);
|
|
}
|
|
|
|
static int RndisFilterQueryDeviceLinkStatus(struct rndis_device *Device)
|
|
{
|
|
u32 size = sizeof(u32);
|
|
|
|
return RndisFilterQueryDevice(Device,
|
|
RNDIS_OID_GEN_MEDIA_CONNECT_STATUS,
|
|
&Device->LinkStatus, &size);
|
|
}
|
|
|
|
static int RndisFilterSetPacketFilter(struct rndis_device *Device,
|
|
u32 NewFilter)
|
|
{
|
|
struct rndis_request *request;
|
|
struct rndis_set_request *set;
|
|
struct rndis_set_complete *setComplete;
|
|
u32 status;
|
|
int ret;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
/* ASSERT(RNDIS_MESSAGE_SIZE(struct rndis_set_request) + sizeof(u32) <= */
|
|
/* sizeof(struct rndis_message)); */
|
|
|
|
request = GetRndisRequest(Device, REMOTE_NDIS_SET_MSG,
|
|
RNDIS_MESSAGE_SIZE(struct rndis_set_request) +
|
|
sizeof(u32));
|
|
if (!request) {
|
|
ret = -1;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Setup the rndis set */
|
|
set = &request->RequestMessage.Message.SetRequest;
|
|
set->Oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER;
|
|
set->InformationBufferLength = sizeof(u32);
|
|
set->InformationBufferOffset = sizeof(struct rndis_set_request);
|
|
|
|
memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request),
|
|
&NewFilter, sizeof(u32));
|
|
|
|
ret = RndisFilterSendRequest(Device, request);
|
|
if (ret != 0)
|
|
goto Cleanup;
|
|
|
|
ret = osd_WaitEventWaitEx(request->WaitEvent, 2000/*2sec*/);
|
|
if (!ret) {
|
|
ret = -1;
|
|
DPRINT_ERR(NETVSC, "timeout before we got a set response...");
|
|
/*
|
|
* We cant deallocate the request since we may still receive a
|
|
* send completion for it.
|
|
*/
|
|
goto Exit;
|
|
} else {
|
|
if (ret > 0)
|
|
ret = 0;
|
|
setComplete = &request->ResponseMessage.Message.SetComplete;
|
|
status = setComplete->Status;
|
|
}
|
|
|
|
Cleanup:
|
|
if (request)
|
|
PutRndisRequest(Device, request);
|
|
Exit:
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int RndisFilterInit(struct netvsc_driver *Driver)
|
|
{
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
DPRINT_DBG(NETVSC, "sizeof(struct rndis_filter_packet) == %zd",
|
|
sizeof(struct rndis_filter_packet));
|
|
|
|
Driver->RequestExtSize = sizeof(struct rndis_filter_packet);
|
|
|
|
/* Driver->Context = rndisDriver; */
|
|
|
|
memset(&gRndisFilter, 0, sizeof(struct rndis_filter_driver_object));
|
|
|
|
/*rndisDriver->Driver = Driver;
|
|
|
|
ASSERT(Driver->OnLinkStatusChanged);
|
|
rndisDriver->OnLinkStatusChanged = Driver->OnLinkStatusChanged;*/
|
|
|
|
/* Save the original dispatch handlers before we override it */
|
|
gRndisFilter.InnerDriver.Base.OnDeviceAdd = Driver->Base.OnDeviceAdd;
|
|
gRndisFilter.InnerDriver.Base.OnDeviceRemove =
|
|
Driver->Base.OnDeviceRemove;
|
|
gRndisFilter.InnerDriver.Base.OnCleanup = Driver->Base.OnCleanup;
|
|
|
|
/* ASSERT(Driver->OnSend); */
|
|
/* ASSERT(Driver->OnReceiveCallback); */
|
|
gRndisFilter.InnerDriver.OnSend = Driver->OnSend;
|
|
gRndisFilter.InnerDriver.OnReceiveCallback = Driver->OnReceiveCallback;
|
|
gRndisFilter.InnerDriver.OnLinkStatusChanged =
|
|
Driver->OnLinkStatusChanged;
|
|
|
|
/* Override */
|
|
Driver->Base.OnDeviceAdd = RndisFilterOnDeviceAdd;
|
|
Driver->Base.OnDeviceRemove = RndisFilterOnDeviceRemove;
|
|
Driver->Base.OnCleanup = RndisFilterOnCleanup;
|
|
Driver->OnSend = RndisFilterOnSend;
|
|
/* Driver->QueryLinkStatus = RndisFilterQueryDeviceLinkStatus; */
|
|
Driver->OnReceiveCallback = RndisFilterOnReceive;
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int RndisFilterInitDevice(struct rndis_device *Device)
|
|
{
|
|
struct rndis_request *request;
|
|
struct rndis_initialize_request *init;
|
|
struct rndis_initialize_complete *initComplete;
|
|
u32 status;
|
|
int ret;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
request = GetRndisRequest(Device, REMOTE_NDIS_INITIALIZE_MSG,
|
|
RNDIS_MESSAGE_SIZE(struct rndis_initialize_request));
|
|
if (!request) {
|
|
ret = -1;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Setup the rndis set */
|
|
init = &request->RequestMessage.Message.InitializeRequest;
|
|
init->MajorVersion = RNDIS_MAJOR_VERSION;
|
|
init->MinorVersion = RNDIS_MINOR_VERSION;
|
|
/* FIXME: Use 1536 - rounded ethernet frame size */
|
|
init->MaxTransferSize = 2048;
|
|
|
|
Device->State = RNDIS_DEV_INITIALIZING;
|
|
|
|
ret = RndisFilterSendRequest(Device, request);
|
|
if (ret != 0) {
|
|
Device->State = RNDIS_DEV_UNINITIALIZED;
|
|
goto Cleanup;
|
|
}
|
|
|
|
osd_WaitEventWait(request->WaitEvent);
|
|
|
|
initComplete = &request->ResponseMessage.Message.InitializeComplete;
|
|
status = initComplete->Status;
|
|
if (status == RNDIS_STATUS_SUCCESS) {
|
|
Device->State = RNDIS_DEV_INITIALIZED;
|
|
ret = 0;
|
|
} else {
|
|
Device->State = RNDIS_DEV_UNINITIALIZED;
|
|
ret = -1;
|
|
}
|
|
|
|
Cleanup:
|
|
if (request)
|
|
PutRndisRequest(Device, request);
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void RndisFilterHaltDevice(struct rndis_device *Device)
|
|
{
|
|
struct rndis_request *request;
|
|
struct rndis_halt_request *halt;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
/* Attempt to do a rndis device halt */
|
|
request = GetRndisRequest(Device, REMOTE_NDIS_HALT_MSG,
|
|
RNDIS_MESSAGE_SIZE(struct rndis_halt_request));
|
|
if (!request)
|
|
goto Cleanup;
|
|
|
|
/* Setup the rndis set */
|
|
halt = &request->RequestMessage.Message.HaltRequest;
|
|
halt->RequestId = atomic_inc_return(&Device->NewRequestId);
|
|
|
|
/* Ignore return since this msg is optional. */
|
|
RndisFilterSendRequest(Device, request);
|
|
|
|
Device->State = RNDIS_DEV_UNINITIALIZED;
|
|
|
|
Cleanup:
|
|
if (request)
|
|
PutRndisRequest(Device, request);
|
|
DPRINT_EXIT(NETVSC);
|
|
return;
|
|
}
|
|
|
|
static int RndisFilterOpenDevice(struct rndis_device *Device)
|
|
{
|
|
int ret;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
if (Device->State != RNDIS_DEV_INITIALIZED)
|
|
return 0;
|
|
|
|
ret = RndisFilterSetPacketFilter(Device,
|
|
NDIS_PACKET_TYPE_BROADCAST |
|
|
NDIS_PACKET_TYPE_ALL_MULTICAST |
|
|
NDIS_PACKET_TYPE_DIRECTED);
|
|
if (ret == 0)
|
|
Device->State = RNDIS_DEV_DATAINITIALIZED;
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
return ret;
|
|
}
|
|
|
|
static int RndisFilterCloseDevice(struct rndis_device *Device)
|
|
{
|
|
int ret;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
if (Device->State != RNDIS_DEV_DATAINITIALIZED)
|
|
return 0;
|
|
|
|
ret = RndisFilterSetPacketFilter(Device, 0);
|
|
if (ret == 0)
|
|
Device->State = RNDIS_DEV_INITIALIZED;
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int RndisFilterOnDeviceAdd(struct hv_device *Device,
|
|
void *AdditionalInfo)
|
|
{
|
|
int ret;
|
|
struct netvsc_device *netDevice;
|
|
struct rndis_device *rndisDevice;
|
|
struct netvsc_device_info *deviceInfo = AdditionalInfo;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
rndisDevice = GetRndisDevice();
|
|
if (!rndisDevice) {
|
|
DPRINT_EXIT(NETVSC);
|
|
return -1;
|
|
}
|
|
|
|
DPRINT_DBG(NETVSC, "rndis device object allocated - %p", rndisDevice);
|
|
|
|
/*
|
|
* 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 = gRndisFilter.InnerDriver.Base.OnDeviceAdd(Device, AdditionalInfo);
|
|
if (ret != 0) {
|
|
kfree(rndisDevice);
|
|
DPRINT_EXIT(NETVSC);
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* Initialize the rndis device */
|
|
netDevice = Device->Extension;
|
|
/* ASSERT(netDevice); */
|
|
/* ASSERT(netDevice->Device); */
|
|
|
|
netDevice->Extension = rndisDevice;
|
|
rndisDevice->NetDevice = netDevice;
|
|
|
|
/* Send the rndis initialization message */
|
|
ret = RndisFilterInitDevice(rndisDevice);
|
|
if (ret != 0) {
|
|
/*
|
|
* TODO: If rndis init failed, we will need to shut down the
|
|
* channel
|
|
*/
|
|
}
|
|
|
|
/* Get the mac address */
|
|
ret = RndisFilterQueryDeviceMac(rndisDevice);
|
|
if (ret != 0) {
|
|
/*
|
|
* TODO: shutdown rndis device and the channel
|
|
*/
|
|
}
|
|
|
|
DPRINT_INFO(NETVSC, "Device 0x%p mac addr %pM",
|
|
rndisDevice, rndisDevice->HwMacAddr);
|
|
|
|
memcpy(deviceInfo->MacAddr, rndisDevice->HwMacAddr, ETH_ALEN);
|
|
|
|
RndisFilterQueryDeviceLinkStatus(rndisDevice);
|
|
|
|
deviceInfo->LinkState = rndisDevice->LinkStatus;
|
|
DPRINT_INFO(NETVSC, "Device 0x%p link state %s", rndisDevice,
|
|
((deviceInfo->LinkState) ? ("down") : ("up")));
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int RndisFilterOnDeviceRemove(struct hv_device *Device)
|
|
{
|
|
struct netvsc_device *netDevice = Device->Extension;
|
|
struct rndis_device *rndisDevice = netDevice->Extension;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
/* Halt and release the rndis device */
|
|
RndisFilterHaltDevice(rndisDevice);
|
|
|
|
kfree(rndisDevice);
|
|
netDevice->Extension = NULL;
|
|
|
|
/* Pass control to inner driver to remove the device */
|
|
gRndisFilter.InnerDriver.Base.OnDeviceRemove(Device);
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void RndisFilterOnCleanup(struct hv_driver *Driver)
|
|
{
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
}
|
|
|
|
int RndisFilterOnOpen(struct hv_device *Device)
|
|
{
|
|
int ret;
|
|
struct netvsc_device *netDevice = Device->Extension;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
if (!netDevice)
|
|
return -EINVAL;
|
|
|
|
ret = RndisFilterOpenDevice(netDevice->Extension);
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int RndisFilterOnClose(struct hv_device *Device)
|
|
{
|
|
int ret;
|
|
struct netvsc_device *netDevice = Device->Extension;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
if (!netDevice)
|
|
return -EINVAL;
|
|
|
|
ret = RndisFilterCloseDevice(netDevice->Extension);
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int RndisFilterOnSend(struct hv_device *Device,
|
|
struct hv_netvsc_packet *Packet)
|
|
{
|
|
int ret;
|
|
struct rndis_filter_packet *filterPacket;
|
|
struct rndis_message *rndisMessage;
|
|
struct rndis_packet *rndisPacket;
|
|
u32 rndisMessageSize;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
/* Add the rndis header */
|
|
filterPacket = (struct rndis_filter_packet *)Packet->Extension;
|
|
/* ASSERT(filterPacket); */
|
|
|
|
memset(filterPacket, 0, sizeof(struct rndis_filter_packet));
|
|
|
|
rndisMessage = &filterPacket->Message;
|
|
rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet);
|
|
|
|
rndisMessage->NdisMessageType = REMOTE_NDIS_PACKET_MSG;
|
|
rndisMessage->MessageLength = Packet->TotalDataBufferLength +
|
|
rndisMessageSize;
|
|
|
|
rndisPacket = &rndisMessage->Message.Packet;
|
|
rndisPacket->DataOffset = sizeof(struct rndis_packet);
|
|
rndisPacket->DataLength = Packet->TotalDataBufferLength;
|
|
|
|
Packet->IsDataPacket = true;
|
|
Packet->PageBuffers[0].Pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT;
|
|
Packet->PageBuffers[0].Offset =
|
|
(unsigned long)rndisMessage & (PAGE_SIZE-1);
|
|
Packet->PageBuffers[0].Length = rndisMessageSize;
|
|
|
|
/* Save the packet send completion and context */
|
|
filterPacket->OnCompletion = Packet->Completion.Send.OnSendCompletion;
|
|
filterPacket->CompletionContext =
|
|
Packet->Completion.Send.SendCompletionContext;
|
|
|
|
/* Use ours */
|
|
Packet->Completion.Send.OnSendCompletion = RndisFilterOnSendCompletion;
|
|
Packet->Completion.Send.SendCompletionContext = filterPacket;
|
|
|
|
ret = gRndisFilter.InnerDriver.OnSend(Device, Packet);
|
|
if (ret != 0) {
|
|
/*
|
|
* Reset the completion to originals to allow retries from
|
|
* above
|
|
*/
|
|
Packet->Completion.Send.OnSendCompletion =
|
|
filterPacket->OnCompletion;
|
|
Packet->Completion.Send.SendCompletionContext =
|
|
filterPacket->CompletionContext;
|
|
}
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void RndisFilterOnSendCompletion(void *Context)
|
|
{
|
|
struct rndis_filter_packet *filterPacket = Context;
|
|
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
/* Pass it back to the original handler */
|
|
filterPacket->OnCompletion(filterPacket->CompletionContext);
|
|
|
|
DPRINT_EXIT(NETVSC);
|
|
}
|
|
|
|
|
|
static void RndisFilterOnSendRequestCompletion(void *Context)
|
|
{
|
|
DPRINT_ENTER(NETVSC);
|
|
|
|
/* Noop */
|
|
DPRINT_EXIT(NETVSC);
|
|
}
|