Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) 2009, Microsoft Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| 16 | * Place - Suite 330, Boston, MA 02111-1307 USA. |
| 17 | * |
| 18 | * Authors: |
| 19 | * Haiyang Zhang <haiyangz@microsoft.com> |
| 20 | * Hank Janssen <hjanssen@microsoft.com> |
| 21 | * |
| 22 | */ |
| 23 | |
Greg Kroah-Hartman | c86f3e2 | 2009-07-14 10:59:56 -0700 | [diff] [blame] | 24 | #define KERNEL_2_6_27 |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 25 | |
Greg Kroah-Hartman | 5654e93 | 2009-07-14 15:08:20 -0700 | [diff] [blame] | 26 | #include <linux/kernel.h> |
Greg Kroah-Hartman | 0ffa63b | 2009-07-15 11:06:01 -0700 | [diff] [blame] | 27 | #include <linux/mm.h> |
Greg Kroah-Hartman | c86f3e2 | 2009-07-14 10:59:56 -0700 | [diff] [blame] | 28 | #include "include/logging.h" |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 29 | |
Greg Kroah-Hartman | c86f3e2 | 2009-07-14 10:59:56 -0700 | [diff] [blame] | 30 | #include "include/NetVscApi.h" |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 31 | #include "RndisFilter.h" |
| 32 | |
| 33 | // |
| 34 | // Data types |
| 35 | // |
| 36 | |
| 37 | typedef struct _RNDIS_FILTER_DRIVER_OBJECT { |
| 38 | // The original driver |
| 39 | NETVSC_DRIVER_OBJECT InnerDriver; |
| 40 | |
| 41 | } RNDIS_FILTER_DRIVER_OBJECT; |
| 42 | |
| 43 | typedef enum { |
| 44 | RNDIS_DEV_UNINITIALIZED = 0, |
| 45 | RNDIS_DEV_INITIALIZING, |
| 46 | RNDIS_DEV_INITIALIZED, |
| 47 | RNDIS_DEV_DATAINITIALIZED, |
| 48 | } RNDIS_DEVICE_STATE; |
| 49 | |
| 50 | typedef struct _RNDIS_DEVICE { |
| 51 | NETVSC_DEVICE *NetDevice; |
| 52 | |
| 53 | RNDIS_DEVICE_STATE State; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 54 | u32 LinkStatus; |
| 55 | u32 NewRequestId; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 56 | |
| 57 | HANDLE RequestLock; |
| 58 | LIST_ENTRY RequestList; |
| 59 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 60 | unsigned char HwMacAddr[HW_MACADDR_LEN]; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 61 | } RNDIS_DEVICE; |
| 62 | |
| 63 | |
| 64 | typedef struct _RNDIS_REQUEST { |
| 65 | LIST_ENTRY ListEntry; |
| 66 | HANDLE WaitEvent; |
| 67 | |
| 68 | // FIXME: We assumed a fixed size response here. If we do ever need to handle a bigger response, |
| 69 | // we can either define a max response message or add a response buffer variable above this field |
| 70 | RNDIS_MESSAGE ResponseMessage; |
| 71 | |
| 72 | // Simplify allocation by having a netvsc packet inline |
| 73 | NETVSC_PACKET Packet; |
| 74 | PAGE_BUFFER Buffer; |
| 75 | // FIXME: We assumed a fixed size request here. |
| 76 | RNDIS_MESSAGE RequestMessage; |
| 77 | } RNDIS_REQUEST; |
| 78 | |
| 79 | |
| 80 | typedef struct _RNDIS_FILTER_PACKET { |
| 81 | void *CompletionContext; |
| 82 | PFN_ON_SENDRECVCOMPLETION OnCompletion; |
| 83 | |
| 84 | RNDIS_MESSAGE Message; |
| 85 | } RNDIS_FILTER_PACKET; |
| 86 | |
| 87 | // |
| 88 | // Internal routines |
| 89 | // |
| 90 | static int |
| 91 | RndisFilterSendRequest( |
| 92 | RNDIS_DEVICE *Device, |
| 93 | RNDIS_REQUEST *Request |
| 94 | ); |
| 95 | |
| 96 | static void |
| 97 | RndisFilterReceiveResponse( |
| 98 | RNDIS_DEVICE *Device, |
| 99 | RNDIS_MESSAGE *Response |
| 100 | ); |
| 101 | |
| 102 | static void |
| 103 | RndisFilterReceiveIndicateStatus( |
| 104 | RNDIS_DEVICE *Device, |
| 105 | RNDIS_MESSAGE *Response |
| 106 | ); |
| 107 | |
| 108 | static void |
| 109 | RndisFilterReceiveData( |
| 110 | RNDIS_DEVICE *Device, |
| 111 | RNDIS_MESSAGE *Message, |
| 112 | NETVSC_PACKET *Packet |
| 113 | ); |
| 114 | |
| 115 | static int |
| 116 | RndisFilterOnReceive( |
| 117 | DEVICE_OBJECT *Device, |
| 118 | NETVSC_PACKET *Packet |
| 119 | ); |
| 120 | |
| 121 | static int |
| 122 | RndisFilterQueryDevice( |
| 123 | RNDIS_DEVICE *Device, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 124 | u32 Oid, |
Greg Kroah-Hartman | e20f683 | 2009-07-14 15:07:21 -0700 | [diff] [blame] | 125 | void *Result, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 126 | u32 *ResultSize |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 127 | ); |
| 128 | |
| 129 | static inline int |
| 130 | RndisFilterQueryDeviceMac( |
| 131 | RNDIS_DEVICE *Device |
| 132 | ); |
| 133 | |
| 134 | static inline int |
| 135 | RndisFilterQueryDeviceLinkStatus( |
| 136 | RNDIS_DEVICE *Device |
| 137 | ); |
| 138 | |
| 139 | static int |
| 140 | RndisFilterSetPacketFilter( |
| 141 | RNDIS_DEVICE *Device, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 142 | u32 NewFilter |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 143 | ); |
| 144 | |
| 145 | static int |
| 146 | RndisFilterInitDevice( |
| 147 | RNDIS_DEVICE *Device |
| 148 | ); |
| 149 | |
| 150 | static int |
| 151 | RndisFilterOpenDevice( |
| 152 | RNDIS_DEVICE *Device |
| 153 | ); |
| 154 | |
| 155 | static int |
| 156 | RndisFilterCloseDevice( |
| 157 | RNDIS_DEVICE *Device |
| 158 | ); |
| 159 | |
| 160 | static int |
| 161 | RndisFilterOnDeviceAdd( |
| 162 | DEVICE_OBJECT *Device, |
| 163 | void *AdditionalInfo |
| 164 | ); |
| 165 | |
| 166 | static int |
| 167 | RndisFilterOnDeviceRemove( |
| 168 | DEVICE_OBJECT *Device |
| 169 | ); |
| 170 | |
| 171 | static void |
| 172 | RndisFilterOnCleanup( |
| 173 | DRIVER_OBJECT *Driver |
| 174 | ); |
| 175 | |
| 176 | static int |
| 177 | RndisFilterOnOpen( |
| 178 | DEVICE_OBJECT *Device |
| 179 | ); |
| 180 | |
| 181 | static int |
| 182 | RndisFilterOnClose( |
| 183 | DEVICE_OBJECT *Device |
| 184 | ); |
| 185 | |
| 186 | static int |
| 187 | RndisFilterOnSend( |
| 188 | DEVICE_OBJECT *Device, |
| 189 | NETVSC_PACKET *Packet |
| 190 | ); |
| 191 | |
| 192 | static void |
| 193 | RndisFilterOnSendCompletion( |
| 194 | void *Context |
| 195 | ); |
| 196 | |
| 197 | static void |
| 198 | RndisFilterOnSendRequestCompletion( |
| 199 | void *Context |
| 200 | ); |
| 201 | |
| 202 | // |
| 203 | // Global var |
| 204 | // |
| 205 | |
| 206 | // The one and only |
| 207 | RNDIS_FILTER_DRIVER_OBJECT gRndisFilter; |
| 208 | |
| 209 | static inline RNDIS_DEVICE* GetRndisDevice(void) |
| 210 | { |
| 211 | RNDIS_DEVICE *device; |
| 212 | |
Greg Kroah-Hartman | e276a3a | 2009-07-15 12:47:43 -0700 | [diff] [blame^] | 213 | device = kzalloc(sizeof(RNDIS_DEVICE), GFP_KERNEL); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 214 | if (!device) |
| 215 | { |
| 216 | return NULL; |
| 217 | } |
| 218 | |
| 219 | device->RequestLock = SpinlockCreate(); |
| 220 | if (!device->RequestLock) |
| 221 | { |
| 222 | MemFree(device); |
| 223 | return NULL; |
| 224 | } |
| 225 | |
| 226 | INITIALIZE_LIST_HEAD(&device->RequestList); |
| 227 | |
| 228 | device->State = RNDIS_DEV_UNINITIALIZED; |
| 229 | |
| 230 | return device; |
| 231 | } |
| 232 | |
| 233 | static inline void PutRndisDevice(RNDIS_DEVICE *Device) |
| 234 | { |
| 235 | SpinlockClose(Device->RequestLock); |
| 236 | MemFree(Device); |
| 237 | } |
| 238 | |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 239 | static inline RNDIS_REQUEST* GetRndisRequest(RNDIS_DEVICE *Device, u32 MessageType, u32 MessageLength) |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 240 | { |
| 241 | RNDIS_REQUEST *request; |
| 242 | RNDIS_MESSAGE *rndisMessage; |
| 243 | RNDIS_SET_REQUEST *set; |
| 244 | |
Greg Kroah-Hartman | e276a3a | 2009-07-15 12:47:43 -0700 | [diff] [blame^] | 245 | request = kzalloc(sizeof(RNDIS_REQUEST), GFP_KERNEL); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 246 | if (!request) |
| 247 | { |
| 248 | return NULL; |
| 249 | } |
| 250 | |
| 251 | request->WaitEvent = WaitEventCreate(); |
| 252 | if (!request->WaitEvent) |
| 253 | { |
| 254 | MemFree(request); |
| 255 | return NULL; |
| 256 | } |
| 257 | |
| 258 | rndisMessage = &request->RequestMessage; |
| 259 | rndisMessage->NdisMessageType = MessageType; |
| 260 | rndisMessage->MessageLength = MessageLength; |
| 261 | |
| 262 | // Set the request id. This field is always after the rndis header for request/response packet types so |
| 263 | // we just used the SetRequest as a template |
| 264 | set = &rndisMessage->Message.SetRequest; |
| 265 | set->RequestId = InterlockedIncrement((int*)&Device->NewRequestId); |
| 266 | |
| 267 | // Add to the request list |
| 268 | SpinlockAcquire(Device->RequestLock); |
| 269 | INSERT_TAIL_LIST(&Device->RequestList, &request->ListEntry); |
| 270 | SpinlockRelease(Device->RequestLock); |
| 271 | |
| 272 | return request; |
| 273 | } |
| 274 | |
| 275 | static inline void PutRndisRequest(RNDIS_DEVICE *Device, RNDIS_REQUEST *Request) |
| 276 | { |
| 277 | SpinlockAcquire(Device->RequestLock); |
| 278 | REMOVE_ENTRY_LIST(&Request->ListEntry); |
| 279 | SpinlockRelease(Device->RequestLock); |
| 280 | |
| 281 | WaitEventClose(Request->WaitEvent); |
| 282 | MemFree(Request); |
| 283 | } |
| 284 | |
| 285 | static inline void DumpRndisMessage(RNDIS_MESSAGE *RndisMessage) |
| 286 | { |
| 287 | switch (RndisMessage->NdisMessageType) |
| 288 | { |
| 289 | case REMOTE_NDIS_PACKET_MSG: |
| 290 | DPRINT_DBG(NETVSC, "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", |
| 291 | RndisMessage->MessageLength, |
| 292 | RndisMessage->Message.Packet.DataOffset, |
| 293 | RndisMessage->Message.Packet.DataLength, |
| 294 | RndisMessage->Message.Packet.NumOOBDataElements, |
| 295 | RndisMessage->Message.Packet.OOBDataOffset, |
| 296 | RndisMessage->Message.Packet.OOBDataLength, |
| 297 | RndisMessage->Message.Packet.PerPacketInfoOffset, |
| 298 | RndisMessage->Message.Packet.PerPacketInfoLength); |
| 299 | break; |
| 300 | |
| 301 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
| 302 | DPRINT_DBG(NETVSC, "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)", |
| 303 | RndisMessage->MessageLength, |
| 304 | RndisMessage->Message.InitializeComplete.RequestId, |
| 305 | RndisMessage->Message.InitializeComplete.Status, |
| 306 | RndisMessage->Message.InitializeComplete.MajorVersion, |
| 307 | RndisMessage->Message.InitializeComplete.MinorVersion, |
| 308 | RndisMessage->Message.InitializeComplete.DeviceFlags, |
| 309 | RndisMessage->Message.InitializeComplete.MaxTransferSize, |
| 310 | RndisMessage->Message.InitializeComplete.MaxPacketsPerMessage, |
| 311 | RndisMessage->Message.InitializeComplete.PacketAlignmentFactor); |
| 312 | break; |
| 313 | |
| 314 | case REMOTE_NDIS_QUERY_CMPLT: |
| 315 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_QUERY_CMPLT (len %u, id 0x%x, status 0x%x, buf len %u, buf offset %u)", |
| 316 | RndisMessage->MessageLength, |
| 317 | RndisMessage->Message.QueryComplete.RequestId, |
| 318 | RndisMessage->Message.QueryComplete.Status, |
| 319 | RndisMessage->Message.QueryComplete.InformationBufferLength, |
| 320 | RndisMessage->Message.QueryComplete.InformationBufferOffset); |
| 321 | break; |
| 322 | |
| 323 | case REMOTE_NDIS_SET_CMPLT: |
| 324 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)", |
| 325 | RndisMessage->MessageLength, |
| 326 | RndisMessage->Message.SetComplete.RequestId, |
| 327 | RndisMessage->Message.SetComplete.Status); |
| 328 | break; |
| 329 | |
| 330 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
| 331 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INDICATE_STATUS_MSG (len %u, status 0x%x, buf len %u, buf offset %u)", |
| 332 | RndisMessage->MessageLength, |
| 333 | RndisMessage->Message.IndicateStatus.Status, |
| 334 | RndisMessage->Message.IndicateStatus.StatusBufferLength, |
| 335 | RndisMessage->Message.IndicateStatus.StatusBufferOffset); |
| 336 | break; |
| 337 | |
| 338 | default: |
| 339 | DPRINT_DBG(NETVSC, "0x%x (len %u)", |
| 340 | RndisMessage->NdisMessageType, |
| 341 | RndisMessage->MessageLength); |
| 342 | break; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | static int |
| 347 | RndisFilterSendRequest( |
| 348 | RNDIS_DEVICE *Device, |
| 349 | RNDIS_REQUEST *Request |
| 350 | ) |
| 351 | { |
| 352 | int ret=0; |
| 353 | NETVSC_PACKET *packet; |
| 354 | |
| 355 | DPRINT_ENTER(NETVSC); |
| 356 | |
| 357 | // Setup the packet to send it |
| 358 | packet = &Request->Packet; |
| 359 | |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 360 | packet->IsDataPacket = false; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 361 | packet->TotalDataBufferLength = Request->RequestMessage.MessageLength; |
| 362 | packet->PageBufferCount = 1; |
| 363 | |
| 364 | packet->PageBuffers[0].Pfn = GetPhysicalAddress(&Request->RequestMessage) >> PAGE_SHIFT; |
| 365 | packet->PageBuffers[0].Length = Request->RequestMessage.MessageLength; |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 366 | packet->PageBuffers[0].Offset = (unsigned long)&Request->RequestMessage & (PAGE_SIZE -1); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 367 | |
| 368 | packet->Completion.Send.SendCompletionContext = Request;//packet; |
| 369 | packet->Completion.Send.OnSendCompletion = RndisFilterOnSendRequestCompletion; |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 370 | packet->Completion.Send.SendCompletionTid = (unsigned long)Device; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 371 | |
| 372 | ret = gRndisFilter.InnerDriver.OnSend(Device->NetDevice->Device, packet); |
| 373 | DPRINT_EXIT(NETVSC); |
| 374 | return ret; |
| 375 | } |
| 376 | |
| 377 | |
| 378 | static void |
| 379 | RndisFilterReceiveResponse( |
| 380 | RNDIS_DEVICE *Device, |
| 381 | RNDIS_MESSAGE *Response |
| 382 | ) |
| 383 | { |
| 384 | LIST_ENTRY *anchor; |
| 385 | LIST_ENTRY *curr; |
| 386 | RNDIS_REQUEST *request=NULL; |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 387 | bool found = false; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 388 | |
| 389 | DPRINT_ENTER(NETVSC); |
| 390 | |
| 391 | SpinlockAcquire(Device->RequestLock); |
| 392 | ITERATE_LIST_ENTRIES(anchor, curr, &Device->RequestList) |
| 393 | { |
| 394 | request = CONTAINING_RECORD(curr, RNDIS_REQUEST, ListEntry); |
| 395 | |
| 396 | // All request/response message contains RequestId as the 1st field |
| 397 | if (request->RequestMessage.Message.InitializeRequest.RequestId == Response->Message.InitializeComplete.RequestId) |
| 398 | { |
| 399 | DPRINT_DBG(NETVSC, "found rndis request for this response (id 0x%x req type 0x%x res type 0x%x)", |
| 400 | request->RequestMessage.Message.InitializeRequest.RequestId, request->RequestMessage.NdisMessageType, Response->NdisMessageType); |
| 401 | |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 402 | found = true; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 403 | break; |
| 404 | } |
| 405 | } |
| 406 | SpinlockRelease(Device->RequestLock); |
| 407 | |
| 408 | if (found) |
| 409 | { |
| 410 | if (Response->MessageLength <= sizeof(RNDIS_MESSAGE)) |
| 411 | { |
| 412 | memcpy(&request->ResponseMessage, Response, Response->MessageLength); |
| 413 | } |
| 414 | else |
| 415 | { |
| 416 | DPRINT_ERR(NETVSC, "rndis response buffer overflow detected (size %u max %u)", Response->MessageLength, sizeof(RNDIS_FILTER_PACKET)); |
| 417 | |
| 418 | if (Response->NdisMessageType == REMOTE_NDIS_RESET_CMPLT) // does not have a request id field |
| 419 | { |
| 420 | request->ResponseMessage.Message.ResetComplete.Status = STATUS_BUFFER_OVERFLOW; |
| 421 | } |
| 422 | else |
| 423 | { |
| 424 | request->ResponseMessage.Message.InitializeComplete.Status = STATUS_BUFFER_OVERFLOW; |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | WaitEventSet(request->WaitEvent); |
| 429 | } |
| 430 | else |
| 431 | { |
| 432 | DPRINT_ERR(NETVSC, "no rndis request found for this response (id 0x%x res type 0x%x)", |
| 433 | Response->Message.InitializeComplete.RequestId, Response->NdisMessageType); |
| 434 | } |
| 435 | |
| 436 | DPRINT_EXIT(NETVSC); |
| 437 | } |
| 438 | |
| 439 | static void |
| 440 | RndisFilterReceiveIndicateStatus( |
| 441 | RNDIS_DEVICE *Device, |
| 442 | RNDIS_MESSAGE *Response |
| 443 | ) |
| 444 | { |
| 445 | RNDIS_INDICATE_STATUS *indicate = &Response->Message.IndicateStatus; |
| 446 | |
| 447 | if (indicate->Status == RNDIS_STATUS_MEDIA_CONNECT) |
| 448 | { |
| 449 | gRndisFilter.InnerDriver.OnLinkStatusChanged(Device->NetDevice->Device, 1); |
| 450 | } |
| 451 | else if (indicate->Status == RNDIS_STATUS_MEDIA_DISCONNECT) |
| 452 | { |
| 453 | gRndisFilter.InnerDriver.OnLinkStatusChanged(Device->NetDevice->Device, 0); |
| 454 | } |
| 455 | else |
| 456 | { |
| 457 | // TODO: |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | static void |
| 462 | RndisFilterReceiveData( |
| 463 | RNDIS_DEVICE *Device, |
| 464 | RNDIS_MESSAGE *Message, |
| 465 | NETVSC_PACKET *Packet |
| 466 | ) |
| 467 | { |
| 468 | RNDIS_PACKET *rndisPacket; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 469 | u32 dataOffset; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 470 | |
| 471 | DPRINT_ENTER(NETVSC); |
| 472 | |
| 473 | // empty ethernet frame ?? |
| 474 | ASSERT(Packet->PageBuffers[0].Length > RNDIS_MESSAGE_SIZE(RNDIS_PACKET)); |
| 475 | |
| 476 | rndisPacket = &Message->Message.Packet; |
| 477 | |
| 478 | // FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this |
| 479 | // netvsc packet (ie TotalDataBufferLength != MessageLength) |
| 480 | |
| 481 | // Remove the rndis header and pass it back up the stack |
| 482 | dataOffset = RNDIS_HEADER_SIZE + rndisPacket->DataOffset; |
| 483 | |
| 484 | Packet->TotalDataBufferLength -= dataOffset; |
| 485 | Packet->PageBuffers[0].Offset += dataOffset; |
| 486 | Packet->PageBuffers[0].Length -= dataOffset; |
| 487 | |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 488 | Packet->IsDataPacket = true; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 489 | |
| 490 | gRndisFilter.InnerDriver.OnReceiveCallback(Device->NetDevice->Device, Packet); |
| 491 | |
| 492 | DPRINT_EXIT(NETVSC); |
| 493 | } |
| 494 | |
| 495 | static int |
| 496 | RndisFilterOnReceive( |
| 497 | DEVICE_OBJECT *Device, |
| 498 | NETVSC_PACKET *Packet |
| 499 | ) |
| 500 | { |
| 501 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 502 | RNDIS_DEVICE *rndisDevice; |
| 503 | RNDIS_MESSAGE rndisMessage; |
| 504 | RNDIS_MESSAGE *rndisHeader; |
| 505 | |
| 506 | DPRINT_ENTER(NETVSC); |
| 507 | |
| 508 | ASSERT(netDevice); |
| 509 | //Make sure the rndis device state is initialized |
| 510 | if (!netDevice->Extension) |
| 511 | { |
| 512 | DPRINT_ERR(NETVSC, "got rndis message but no rndis device...dropping this message!"); |
| 513 | DPRINT_EXIT(NETVSC); |
| 514 | return -1; |
| 515 | } |
| 516 | |
| 517 | rndisDevice = (RNDIS_DEVICE*)netDevice->Extension; |
| 518 | if (rndisDevice->State == RNDIS_DEV_UNINITIALIZED) |
| 519 | { |
| 520 | DPRINT_ERR(NETVSC, "got rndis message but rndis device uninitialized...dropping this message!"); |
| 521 | DPRINT_EXIT(NETVSC); |
| 522 | return -1; |
| 523 | } |
| 524 | |
| 525 | rndisHeader = (RNDIS_MESSAGE*)PageMapVirtualAddress(Packet->PageBuffers[0].Pfn); |
| 526 | |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 527 | rndisHeader = (void*)((unsigned long)rndisHeader + Packet->PageBuffers[0].Offset); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 528 | |
| 529 | // Make sure we got a valid rndis message |
| 530 | // FIXME: There seems to be a bug in set completion msg where its MessageLength is 16 bytes but |
| 531 | // the ByteCount field in the xfer page range shows 52 bytes |
| 532 | #if 0 |
| 533 | if ( Packet->TotalDataBufferLength != rndisHeader->MessageLength ) |
| 534 | { |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 535 | PageUnmapVirtualAddress((void*)(unsigned long)rndisHeader - Packet->PageBuffers[0].Offset); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 536 | |
| 537 | DPRINT_ERR(NETVSC, "invalid rndis message? (expected %u bytes got %u)...dropping this message!", |
| 538 | rndisHeader->MessageLength, Packet->TotalDataBufferLength); |
| 539 | DPRINT_EXIT(NETVSC); |
| 540 | return -1; |
| 541 | } |
| 542 | #endif |
| 543 | |
| 544 | if ((rndisHeader->NdisMessageType != REMOTE_NDIS_PACKET_MSG) && (rndisHeader->MessageLength > sizeof(RNDIS_MESSAGE))) |
| 545 | { |
| 546 | DPRINT_ERR(NETVSC, "incoming rndis message buffer overflow detected (got %u, max %u)...marking it an error!", |
| 547 | rndisHeader->MessageLength, sizeof(RNDIS_MESSAGE)); |
| 548 | } |
| 549 | |
| 550 | memcpy(&rndisMessage, rndisHeader, (rndisHeader->MessageLength > sizeof(RNDIS_MESSAGE))?sizeof(RNDIS_MESSAGE):rndisHeader->MessageLength); |
| 551 | |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 552 | PageUnmapVirtualAddress((void*)(unsigned long)rndisHeader - Packet->PageBuffers[0].Offset); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 553 | |
| 554 | DumpRndisMessage(&rndisMessage); |
| 555 | |
| 556 | switch (rndisMessage.NdisMessageType) |
| 557 | { |
| 558 | // data msg |
| 559 | case REMOTE_NDIS_PACKET_MSG: |
| 560 | RndisFilterReceiveData(rndisDevice, &rndisMessage, Packet); |
| 561 | break; |
| 562 | |
| 563 | // completion msgs |
| 564 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
| 565 | case REMOTE_NDIS_QUERY_CMPLT: |
| 566 | case REMOTE_NDIS_SET_CMPLT: |
| 567 | //case REMOTE_NDIS_RESET_CMPLT: |
| 568 | //case REMOTE_NDIS_KEEPALIVE_CMPLT: |
| 569 | RndisFilterReceiveResponse(rndisDevice, &rndisMessage); |
| 570 | break; |
| 571 | |
| 572 | // notification msgs |
| 573 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
| 574 | RndisFilterReceiveIndicateStatus(rndisDevice, &rndisMessage); |
| 575 | break; |
| 576 | default: |
| 577 | DPRINT_ERR(NETVSC, "unhandled rndis message (type %u len %u)", rndisMessage.NdisMessageType, rndisMessage.MessageLength); |
| 578 | break; |
| 579 | } |
| 580 | |
| 581 | DPRINT_EXIT(NETVSC); |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | |
| 586 | static int |
| 587 | RndisFilterQueryDevice( |
| 588 | RNDIS_DEVICE *Device, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 589 | u32 Oid, |
Greg Kroah-Hartman | e20f683 | 2009-07-14 15:07:21 -0700 | [diff] [blame] | 590 | void *Result, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 591 | u32 *ResultSize |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 592 | ) |
| 593 | { |
| 594 | RNDIS_REQUEST *request; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 595 | u32 inresultSize = *ResultSize; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 596 | RNDIS_QUERY_REQUEST *query; |
| 597 | RNDIS_QUERY_COMPLETE *queryComplete; |
| 598 | int ret=0; |
| 599 | |
| 600 | DPRINT_ENTER(NETVSC); |
| 601 | |
| 602 | ASSERT(Result); |
| 603 | |
| 604 | *ResultSize = 0; |
| 605 | request = GetRndisRequest(Device, REMOTE_NDIS_QUERY_MSG, RNDIS_MESSAGE_SIZE(RNDIS_QUERY_REQUEST)); |
| 606 | if (!request) |
| 607 | { |
| 608 | ret = -1; |
| 609 | goto Cleanup; |
| 610 | } |
| 611 | |
| 612 | // Setup the rndis query |
| 613 | query = &request->RequestMessage.Message.QueryRequest; |
| 614 | query->Oid = Oid; |
| 615 | query->InformationBufferOffset = sizeof(RNDIS_QUERY_REQUEST); |
| 616 | query->InformationBufferLength = 0; |
| 617 | query->DeviceVcHandle = 0; |
| 618 | |
| 619 | ret = RndisFilterSendRequest(Device, request); |
| 620 | if (ret != 0) |
| 621 | { |
| 622 | goto Cleanup; |
| 623 | } |
| 624 | |
| 625 | WaitEventWait(request->WaitEvent); |
| 626 | |
| 627 | // Copy the response back |
| 628 | queryComplete = &request->ResponseMessage.Message.QueryComplete; |
| 629 | |
| 630 | if (queryComplete->InformationBufferLength > inresultSize) |
| 631 | { |
| 632 | ret = -1; |
| 633 | goto Cleanup; |
| 634 | } |
| 635 | |
| 636 | memcpy(Result, |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 637 | (void*)((unsigned long)queryComplete + queryComplete->InformationBufferOffset), |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 638 | queryComplete->InformationBufferLength); |
| 639 | |
| 640 | *ResultSize = queryComplete->InformationBufferLength; |
| 641 | |
| 642 | Cleanup: |
| 643 | if (request) |
| 644 | { |
| 645 | PutRndisRequest(Device, request); |
| 646 | } |
| 647 | DPRINT_EXIT(NETVSC); |
| 648 | |
| 649 | return ret; |
| 650 | } |
| 651 | |
| 652 | static inline int |
| 653 | RndisFilterQueryDeviceMac( |
| 654 | RNDIS_DEVICE *Device |
| 655 | ) |
| 656 | { |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 657 | u32 size=HW_MACADDR_LEN; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 658 | |
| 659 | return RndisFilterQueryDevice(Device, |
| 660 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
| 661 | Device->HwMacAddr, |
| 662 | &size); |
| 663 | } |
| 664 | |
| 665 | static inline int |
| 666 | RndisFilterQueryDeviceLinkStatus( |
| 667 | RNDIS_DEVICE *Device |
| 668 | ) |
| 669 | { |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 670 | u32 size=sizeof(u32); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 671 | |
| 672 | return RndisFilterQueryDevice(Device, |
| 673 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
| 674 | &Device->LinkStatus, |
| 675 | &size); |
| 676 | } |
| 677 | |
| 678 | static int |
| 679 | RndisFilterSetPacketFilter( |
| 680 | RNDIS_DEVICE *Device, |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 681 | u32 NewFilter |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 682 | ) |
| 683 | { |
| 684 | RNDIS_REQUEST *request; |
| 685 | RNDIS_SET_REQUEST *set; |
| 686 | RNDIS_SET_COMPLETE *setComplete; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 687 | u32 status; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 688 | int ret; |
| 689 | |
| 690 | DPRINT_ENTER(NETVSC); |
| 691 | |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 692 | ASSERT(RNDIS_MESSAGE_SIZE(RNDIS_SET_REQUEST) + sizeof(u32) <= sizeof(RNDIS_MESSAGE)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 693 | |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 694 | request = GetRndisRequest(Device, REMOTE_NDIS_SET_MSG, RNDIS_MESSAGE_SIZE(RNDIS_SET_REQUEST) + sizeof(u32)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 695 | if (!request) |
| 696 | { |
| 697 | ret = -1; |
| 698 | goto Cleanup; |
| 699 | } |
| 700 | |
| 701 | // Setup the rndis set |
| 702 | set = &request->RequestMessage.Message.SetRequest; |
| 703 | set->Oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 704 | set->InformationBufferLength = sizeof(u32); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 705 | set->InformationBufferOffset = sizeof(RNDIS_SET_REQUEST); |
| 706 | |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 707 | memcpy((void*)(unsigned long)set + sizeof(RNDIS_SET_REQUEST), &NewFilter, sizeof(u32)); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 708 | |
| 709 | ret = RndisFilterSendRequest(Device, request); |
| 710 | if (ret != 0) |
| 711 | { |
| 712 | goto Cleanup; |
| 713 | } |
| 714 | |
| 715 | ret = WaitEventWaitEx(request->WaitEvent, 2000/*2sec*/); |
| 716 | if (!ret) |
| 717 | { |
| 718 | ret = -1; |
| 719 | DPRINT_ERR(NETVSC, "timeout before we got a set response..."); |
| 720 | // We cant deallocate the request since we may still receive a send completion for it. |
| 721 | goto Exit; |
| 722 | } |
| 723 | else |
| 724 | { |
| 725 | if (ret > 0) |
| 726 | { |
| 727 | ret = 0; |
| 728 | } |
| 729 | setComplete = &request->ResponseMessage.Message.SetComplete; |
| 730 | status = setComplete->Status; |
| 731 | } |
| 732 | |
| 733 | Cleanup: |
| 734 | if (request) |
| 735 | { |
| 736 | PutRndisRequest(Device, request); |
| 737 | } |
| 738 | Exit: |
| 739 | DPRINT_EXIT(NETVSC); |
| 740 | |
| 741 | return ret; |
| 742 | } |
| 743 | |
| 744 | int |
| 745 | RndisFilterInit( |
| 746 | NETVSC_DRIVER_OBJECT *Driver |
| 747 | ) |
| 748 | { |
| 749 | DPRINT_ENTER(NETVSC); |
| 750 | |
| 751 | DPRINT_DBG(NETVSC, "sizeof(RNDIS_FILTER_PACKET) == %d", sizeof(RNDIS_FILTER_PACKET)); |
| 752 | |
| 753 | Driver->RequestExtSize = sizeof(RNDIS_FILTER_PACKET); |
| 754 | Driver->AdditionalRequestPageBufferCount = 1; // For rndis header |
| 755 | |
| 756 | //Driver->Context = rndisDriver; |
| 757 | |
| 758 | memset(&gRndisFilter, 0, sizeof(RNDIS_FILTER_DRIVER_OBJECT)); |
| 759 | |
| 760 | /*rndisDriver->Driver = Driver; |
| 761 | |
| 762 | ASSERT(Driver->OnLinkStatusChanged); |
| 763 | rndisDriver->OnLinkStatusChanged = Driver->OnLinkStatusChanged;*/ |
| 764 | |
| 765 | // Save the original dispatch handlers before we override it |
| 766 | gRndisFilter.InnerDriver.Base.OnDeviceAdd = Driver->Base.OnDeviceAdd; |
| 767 | gRndisFilter.InnerDriver.Base.OnDeviceRemove = Driver->Base.OnDeviceRemove; |
| 768 | gRndisFilter.InnerDriver.Base.OnCleanup = Driver->Base.OnCleanup; |
| 769 | |
| 770 | ASSERT(Driver->OnSend); |
| 771 | ASSERT(Driver->OnReceiveCallback); |
| 772 | gRndisFilter.InnerDriver.OnSend = Driver->OnSend; |
| 773 | gRndisFilter.InnerDriver.OnReceiveCallback = Driver->OnReceiveCallback; |
| 774 | gRndisFilter.InnerDriver.OnLinkStatusChanged = Driver->OnLinkStatusChanged; |
| 775 | |
| 776 | // Override |
| 777 | Driver->Base.OnDeviceAdd = RndisFilterOnDeviceAdd; |
| 778 | Driver->Base.OnDeviceRemove = RndisFilterOnDeviceRemove; |
| 779 | Driver->Base.OnCleanup = RndisFilterOnCleanup; |
| 780 | Driver->OnSend = RndisFilterOnSend; |
| 781 | Driver->OnOpen = RndisFilterOnOpen; |
| 782 | Driver->OnClose = RndisFilterOnClose; |
| 783 | //Driver->QueryLinkStatus = RndisFilterQueryDeviceLinkStatus; |
| 784 | Driver->OnReceiveCallback = RndisFilterOnReceive; |
| 785 | |
| 786 | DPRINT_EXIT(NETVSC); |
| 787 | |
| 788 | return 0; |
| 789 | } |
| 790 | |
| 791 | static int |
| 792 | RndisFilterInitDevice( |
| 793 | RNDIS_DEVICE *Device |
| 794 | ) |
| 795 | { |
| 796 | RNDIS_REQUEST *request; |
| 797 | RNDIS_INITIALIZE_REQUEST *init; |
| 798 | RNDIS_INITIALIZE_COMPLETE *initComplete; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 799 | u32 status; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 800 | int ret; |
| 801 | |
| 802 | DPRINT_ENTER(NETVSC); |
| 803 | |
| 804 | request = GetRndisRequest(Device, REMOTE_NDIS_INITIALIZE_MSG, RNDIS_MESSAGE_SIZE(RNDIS_INITIALIZE_REQUEST)); |
| 805 | if (!request) |
| 806 | { |
| 807 | ret = -1; |
| 808 | goto Cleanup; |
| 809 | } |
| 810 | |
| 811 | // Setup the rndis set |
| 812 | init = &request->RequestMessage.Message.InitializeRequest; |
| 813 | init->MajorVersion = RNDIS_MAJOR_VERSION; |
| 814 | init->MinorVersion = RNDIS_MINOR_VERSION; |
| 815 | init->MaxTransferSize = 2048; // FIXME: Use 1536 - rounded ethernet frame size |
| 816 | |
| 817 | Device->State = RNDIS_DEV_INITIALIZING; |
| 818 | |
| 819 | ret = RndisFilterSendRequest(Device, request); |
| 820 | if (ret != 0) |
| 821 | { |
| 822 | Device->State = RNDIS_DEV_UNINITIALIZED; |
| 823 | goto Cleanup; |
| 824 | } |
| 825 | |
| 826 | WaitEventWait(request->WaitEvent); |
| 827 | |
| 828 | initComplete = &request->ResponseMessage.Message.InitializeComplete; |
| 829 | status = initComplete->Status; |
| 830 | if (status == RNDIS_STATUS_SUCCESS) |
| 831 | { |
| 832 | Device->State = RNDIS_DEV_INITIALIZED; |
| 833 | ret = 0; |
| 834 | } |
| 835 | else |
| 836 | { |
| 837 | Device->State = RNDIS_DEV_UNINITIALIZED; |
| 838 | ret = -1; |
| 839 | } |
| 840 | |
| 841 | Cleanup: |
| 842 | if (request) |
| 843 | { |
| 844 | PutRndisRequest(Device, request); |
| 845 | } |
| 846 | DPRINT_EXIT(NETVSC); |
| 847 | |
| 848 | return ret; |
| 849 | } |
| 850 | |
| 851 | static void |
| 852 | RndisFilterHaltDevice( |
| 853 | RNDIS_DEVICE *Device |
| 854 | ) |
| 855 | { |
| 856 | RNDIS_REQUEST *request; |
| 857 | RNDIS_HALT_REQUEST *halt; |
| 858 | |
| 859 | DPRINT_ENTER(NETVSC); |
| 860 | |
| 861 | // Attempt to do a rndis device halt |
| 862 | request = GetRndisRequest(Device, REMOTE_NDIS_HALT_MSG, RNDIS_MESSAGE_SIZE(RNDIS_HALT_REQUEST)); |
| 863 | if (!request) |
| 864 | { |
| 865 | goto Cleanup; |
| 866 | } |
| 867 | |
| 868 | // Setup the rndis set |
| 869 | halt = &request->RequestMessage.Message.HaltRequest; |
| 870 | halt->RequestId = InterlockedIncrement((int*)&Device->NewRequestId); |
| 871 | |
| 872 | // Ignore return since this msg is optional. |
| 873 | RndisFilterSendRequest(Device, request); |
| 874 | |
| 875 | Device->State = RNDIS_DEV_UNINITIALIZED; |
| 876 | |
| 877 | Cleanup: |
| 878 | if (request) |
| 879 | { |
| 880 | PutRndisRequest(Device, request); |
| 881 | } |
| 882 | DPRINT_EXIT(NETVSC); |
| 883 | return; |
| 884 | } |
| 885 | |
| 886 | |
| 887 | static int |
| 888 | RndisFilterOpenDevice( |
| 889 | RNDIS_DEVICE *Device |
| 890 | ) |
| 891 | { |
| 892 | int ret=0; |
| 893 | |
| 894 | DPRINT_ENTER(NETVSC); |
| 895 | |
| 896 | if (Device->State != RNDIS_DEV_INITIALIZED) |
| 897 | return 0; |
| 898 | |
| 899 | ret = RndisFilterSetPacketFilter(Device, NDIS_PACKET_TYPE_BROADCAST|NDIS_PACKET_TYPE_DIRECTED); |
| 900 | if (ret == 0) |
| 901 | { |
| 902 | Device->State = RNDIS_DEV_DATAINITIALIZED; |
| 903 | } |
| 904 | |
| 905 | DPRINT_EXIT(NETVSC); |
| 906 | return ret; |
| 907 | } |
| 908 | |
| 909 | static int |
| 910 | RndisFilterCloseDevice( |
| 911 | RNDIS_DEVICE *Device |
| 912 | ) |
| 913 | { |
| 914 | int ret; |
| 915 | |
| 916 | DPRINT_ENTER(NETVSC); |
| 917 | |
| 918 | if (Device->State != RNDIS_DEV_DATAINITIALIZED) |
| 919 | return 0; |
| 920 | |
| 921 | ret = RndisFilterSetPacketFilter(Device, 0); |
| 922 | if (ret == 0) |
| 923 | { |
| 924 | Device->State = RNDIS_DEV_INITIALIZED; |
| 925 | } |
| 926 | |
| 927 | DPRINT_EXIT(NETVSC); |
| 928 | |
| 929 | return ret; |
| 930 | } |
| 931 | |
| 932 | |
| 933 | int |
| 934 | RndisFilterOnDeviceAdd( |
| 935 | DEVICE_OBJECT *Device, |
| 936 | void *AdditionalInfo |
| 937 | ) |
| 938 | { |
| 939 | int ret; |
| 940 | NETVSC_DEVICE *netDevice; |
| 941 | RNDIS_DEVICE *rndisDevice; |
| 942 | NETVSC_DEVICE_INFO *deviceInfo = (NETVSC_DEVICE_INFO*)AdditionalInfo; |
| 943 | |
| 944 | DPRINT_ENTER(NETVSC); |
| 945 | |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 946 | rndisDevice = GetRndisDevice(); |
| 947 | if (!rndisDevice) |
| 948 | { |
| 949 | DPRINT_EXIT(NETVSC); |
| 950 | return -1; |
| 951 | } |
| 952 | |
| 953 | DPRINT_DBG(NETVSC, "rndis device object allocated - %p", rndisDevice); |
| 954 | |
| 955 | // Let the inner driver handle this first to create the netvsc channel |
| 956 | // NOTE! Once the channel is created, we may get a receive callback |
| 957 | // (RndisFilterOnReceive()) before this call is completed |
| 958 | ret = gRndisFilter.InnerDriver.Base.OnDeviceAdd(Device, AdditionalInfo); |
| 959 | if (ret != 0) |
| 960 | { |
| 961 | PutRndisDevice(rndisDevice); |
| 962 | DPRINT_EXIT(NETVSC); |
| 963 | return ret; |
| 964 | } |
| 965 | |
| 966 | // |
| 967 | // Initialize the rndis device |
| 968 | // |
| 969 | netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 970 | ASSERT(netDevice); |
| 971 | ASSERT(netDevice->Device); |
| 972 | |
| 973 | netDevice->Extension = rndisDevice; |
| 974 | rndisDevice->NetDevice = netDevice; |
| 975 | |
| 976 | // Send the rndis initialization message |
| 977 | ret = RndisFilterInitDevice(rndisDevice); |
| 978 | if (ret != 0) |
| 979 | { |
| 980 | // TODO: If rndis init failed, we will need to shut down the channel |
| 981 | } |
| 982 | |
| 983 | // Get the mac address |
| 984 | ret = RndisFilterQueryDeviceMac(rndisDevice); |
| 985 | if (ret != 0) |
| 986 | { |
| 987 | // TODO: shutdown rndis device and the channel |
| 988 | } |
| 989 | |
| 990 | DPRINT_INFO(NETVSC, "Device 0x%p mac addr %02x%02x%02x%02x%02x%02x", |
| 991 | rndisDevice, |
| 992 | rndisDevice->HwMacAddr[0], |
| 993 | rndisDevice->HwMacAddr[1], |
| 994 | rndisDevice->HwMacAddr[2], |
| 995 | rndisDevice->HwMacAddr[3], |
| 996 | rndisDevice->HwMacAddr[4], |
| 997 | rndisDevice->HwMacAddr[5]); |
| 998 | |
| 999 | memcpy(deviceInfo->MacAddr, rndisDevice->HwMacAddr, HW_MACADDR_LEN); |
| 1000 | |
| 1001 | RndisFilterQueryDeviceLinkStatus(rndisDevice); |
| 1002 | |
| 1003 | deviceInfo->LinkState = rndisDevice->LinkStatus; |
| 1004 | DPRINT_INFO(NETVSC, "Device 0x%p link state %s", rndisDevice, ((deviceInfo->LinkState)?("down"):("up"))); |
| 1005 | |
| 1006 | DPRINT_EXIT(NETVSC); |
| 1007 | |
| 1008 | return ret; |
| 1009 | } |
| 1010 | |
| 1011 | |
| 1012 | static int |
| 1013 | RndisFilterOnDeviceRemove( |
| 1014 | DEVICE_OBJECT *Device |
| 1015 | ) |
| 1016 | { |
| 1017 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 1018 | RNDIS_DEVICE *rndisDevice = (RNDIS_DEVICE*)netDevice->Extension; |
| 1019 | |
| 1020 | DPRINT_ENTER(NETVSC); |
| 1021 | |
| 1022 | // Halt and release the rndis device |
| 1023 | RndisFilterHaltDevice(rndisDevice); |
| 1024 | |
| 1025 | PutRndisDevice(rndisDevice); |
| 1026 | netDevice->Extension = NULL; |
| 1027 | |
| 1028 | // Pass control to inner driver to remove the device |
| 1029 | gRndisFilter.InnerDriver.Base.OnDeviceRemove(Device); |
| 1030 | |
| 1031 | DPRINT_EXIT(NETVSC); |
| 1032 | |
| 1033 | return 0; |
| 1034 | } |
| 1035 | |
| 1036 | |
| 1037 | static void |
| 1038 | RndisFilterOnCleanup( |
| 1039 | DRIVER_OBJECT *Driver |
| 1040 | ) |
| 1041 | { |
| 1042 | DPRINT_ENTER(NETVSC); |
| 1043 | |
| 1044 | DPRINT_EXIT(NETVSC); |
| 1045 | } |
| 1046 | |
| 1047 | static int |
| 1048 | RndisFilterOnOpen( |
| 1049 | DEVICE_OBJECT *Device |
| 1050 | ) |
| 1051 | { |
| 1052 | int ret; |
| 1053 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 1054 | |
| 1055 | DPRINT_ENTER(NETVSC); |
| 1056 | |
| 1057 | ASSERT(netDevice); |
| 1058 | ret = RndisFilterOpenDevice((RNDIS_DEVICE*)netDevice->Extension); |
| 1059 | |
| 1060 | DPRINT_EXIT(NETVSC); |
| 1061 | |
| 1062 | return ret; |
| 1063 | } |
| 1064 | |
| 1065 | static int |
| 1066 | RndisFilterOnClose( |
| 1067 | DEVICE_OBJECT *Device |
| 1068 | ) |
| 1069 | { |
| 1070 | int ret; |
| 1071 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 1072 | |
| 1073 | DPRINT_ENTER(NETVSC); |
| 1074 | |
| 1075 | ASSERT(netDevice); |
| 1076 | ret = RndisFilterCloseDevice((RNDIS_DEVICE*)netDevice->Extension); |
| 1077 | |
| 1078 | DPRINT_EXIT(NETVSC); |
| 1079 | |
| 1080 | return ret; |
| 1081 | } |
| 1082 | |
| 1083 | |
| 1084 | static int |
| 1085 | RndisFilterOnSend( |
| 1086 | DEVICE_OBJECT *Device, |
| 1087 | NETVSC_PACKET *Packet |
| 1088 | ) |
| 1089 | { |
| 1090 | int ret=0; |
| 1091 | RNDIS_FILTER_PACKET *filterPacket; |
| 1092 | RNDIS_MESSAGE *rndisMessage; |
| 1093 | RNDIS_PACKET *rndisPacket; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 1094 | u32 rndisMessageSize; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1095 | |
| 1096 | DPRINT_ENTER(NETVSC); |
| 1097 | |
| 1098 | // Add the rndis header |
| 1099 | filterPacket = (RNDIS_FILTER_PACKET*)Packet->Extension; |
| 1100 | ASSERT(filterPacket); |
| 1101 | |
| 1102 | memset(filterPacket, 0, sizeof(RNDIS_FILTER_PACKET)); |
| 1103 | |
| 1104 | rndisMessage = &filterPacket->Message; |
| 1105 | rndisMessageSize = RNDIS_MESSAGE_SIZE(RNDIS_PACKET); |
| 1106 | |
| 1107 | rndisMessage->NdisMessageType = REMOTE_NDIS_PACKET_MSG; |
| 1108 | rndisMessage->MessageLength = Packet->TotalDataBufferLength + rndisMessageSize; |
| 1109 | |
| 1110 | rndisPacket = &rndisMessage->Message.Packet; |
| 1111 | rndisPacket->DataOffset = sizeof(RNDIS_PACKET); |
| 1112 | rndisPacket->DataLength = Packet->TotalDataBufferLength; |
| 1113 | |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 1114 | Packet->IsDataPacket = true; |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1115 | Packet->PageBuffers[0].Pfn = GetPhysicalAddress(rndisMessage) >> PAGE_SHIFT; |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 1116 | Packet->PageBuffers[0].Offset = (unsigned long)rndisMessage & (PAGE_SIZE-1); |
Hank Janssen | fceaf24 | 2009-07-13 15:34:54 -0700 | [diff] [blame] | 1117 | Packet->PageBuffers[0].Length = rndisMessageSize; |
| 1118 | |
| 1119 | // Save the packet send completion and context |
| 1120 | filterPacket->OnCompletion = Packet->Completion.Send.OnSendCompletion; |
| 1121 | filterPacket->CompletionContext = Packet->Completion.Send.SendCompletionContext; |
| 1122 | |
| 1123 | // Use ours |
| 1124 | Packet->Completion.Send.OnSendCompletion = RndisFilterOnSendCompletion; |
| 1125 | Packet->Completion.Send.SendCompletionContext = filterPacket; |
| 1126 | |
| 1127 | ret = gRndisFilter.InnerDriver.OnSend(Device, Packet); |
| 1128 | if (ret != 0) |
| 1129 | { |
| 1130 | // Reset the completion to originals to allow retries from above |
| 1131 | Packet->Completion.Send.OnSendCompletion = filterPacket->OnCompletion; |
| 1132 | Packet->Completion.Send.SendCompletionContext = filterPacket->CompletionContext; |
| 1133 | } |
| 1134 | |
| 1135 | DPRINT_EXIT(NETVSC); |
| 1136 | |
| 1137 | return ret; |
| 1138 | } |
| 1139 | |
| 1140 | static void |
| 1141 | RndisFilterOnSendCompletion( |
| 1142 | void *Context) |
| 1143 | { |
| 1144 | RNDIS_FILTER_PACKET *filterPacket = (RNDIS_FILTER_PACKET *)Context; |
| 1145 | |
| 1146 | DPRINT_ENTER(NETVSC); |
| 1147 | |
| 1148 | // Pass it back to the original handler |
| 1149 | filterPacket->OnCompletion(filterPacket->CompletionContext); |
| 1150 | |
| 1151 | DPRINT_EXIT(NETVSC); |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | static void |
| 1156 | RndisFilterOnSendRequestCompletion( |
| 1157 | void *Context |
| 1158 | ) |
| 1159 | { |
| 1160 | DPRINT_ENTER(NETVSC); |
| 1161 | |
| 1162 | // Noop |
| 1163 | DPRINT_EXIT(NETVSC); |
| 1164 | } |