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 | |
| 24 | |
| 25 | #include "logging.h" |
| 26 | |
| 27 | #include "NetVscApi.h" |
| 28 | #include "RndisFilter.h" |
| 29 | |
| 30 | // |
| 31 | // Data types |
| 32 | // |
| 33 | |
| 34 | typedef struct _RNDIS_FILTER_DRIVER_OBJECT { |
| 35 | // The original driver |
| 36 | NETVSC_DRIVER_OBJECT InnerDriver; |
| 37 | |
| 38 | } RNDIS_FILTER_DRIVER_OBJECT; |
| 39 | |
| 40 | typedef enum { |
| 41 | RNDIS_DEV_UNINITIALIZED = 0, |
| 42 | RNDIS_DEV_INITIALIZING, |
| 43 | RNDIS_DEV_INITIALIZED, |
| 44 | RNDIS_DEV_DATAINITIALIZED, |
| 45 | } RNDIS_DEVICE_STATE; |
| 46 | |
| 47 | typedef struct _RNDIS_DEVICE { |
| 48 | NETVSC_DEVICE *NetDevice; |
| 49 | |
| 50 | RNDIS_DEVICE_STATE State; |
| 51 | UINT32 LinkStatus; |
| 52 | UINT32 NewRequestId; |
| 53 | |
| 54 | HANDLE RequestLock; |
| 55 | LIST_ENTRY RequestList; |
| 56 | |
| 57 | UCHAR HwMacAddr[HW_MACADDR_LEN]; |
| 58 | } RNDIS_DEVICE; |
| 59 | |
| 60 | |
| 61 | typedef struct _RNDIS_REQUEST { |
| 62 | LIST_ENTRY ListEntry; |
| 63 | HANDLE WaitEvent; |
| 64 | |
| 65 | // FIXME: We assumed a fixed size response here. If we do ever need to handle a bigger response, |
| 66 | // we can either define a max response message or add a response buffer variable above this field |
| 67 | RNDIS_MESSAGE ResponseMessage; |
| 68 | |
| 69 | // Simplify allocation by having a netvsc packet inline |
| 70 | NETVSC_PACKET Packet; |
| 71 | PAGE_BUFFER Buffer; |
| 72 | // FIXME: We assumed a fixed size request here. |
| 73 | RNDIS_MESSAGE RequestMessage; |
| 74 | } RNDIS_REQUEST; |
| 75 | |
| 76 | |
| 77 | typedef struct _RNDIS_FILTER_PACKET { |
| 78 | void *CompletionContext; |
| 79 | PFN_ON_SENDRECVCOMPLETION OnCompletion; |
| 80 | |
| 81 | RNDIS_MESSAGE Message; |
| 82 | } RNDIS_FILTER_PACKET; |
| 83 | |
| 84 | // |
| 85 | // Internal routines |
| 86 | // |
| 87 | static int |
| 88 | RndisFilterSendRequest( |
| 89 | RNDIS_DEVICE *Device, |
| 90 | RNDIS_REQUEST *Request |
| 91 | ); |
| 92 | |
| 93 | static void |
| 94 | RndisFilterReceiveResponse( |
| 95 | RNDIS_DEVICE *Device, |
| 96 | RNDIS_MESSAGE *Response |
| 97 | ); |
| 98 | |
| 99 | static void |
| 100 | RndisFilterReceiveIndicateStatus( |
| 101 | RNDIS_DEVICE *Device, |
| 102 | RNDIS_MESSAGE *Response |
| 103 | ); |
| 104 | |
| 105 | static void |
| 106 | RndisFilterReceiveData( |
| 107 | RNDIS_DEVICE *Device, |
| 108 | RNDIS_MESSAGE *Message, |
| 109 | NETVSC_PACKET *Packet |
| 110 | ); |
| 111 | |
| 112 | static int |
| 113 | RndisFilterOnReceive( |
| 114 | DEVICE_OBJECT *Device, |
| 115 | NETVSC_PACKET *Packet |
| 116 | ); |
| 117 | |
| 118 | static int |
| 119 | RndisFilterQueryDevice( |
| 120 | RNDIS_DEVICE *Device, |
| 121 | UINT32 Oid, |
| 122 | VOID *Result, |
| 123 | UINT32 *ResultSize |
| 124 | ); |
| 125 | |
| 126 | static inline int |
| 127 | RndisFilterQueryDeviceMac( |
| 128 | RNDIS_DEVICE *Device |
| 129 | ); |
| 130 | |
| 131 | static inline int |
| 132 | RndisFilterQueryDeviceLinkStatus( |
| 133 | RNDIS_DEVICE *Device |
| 134 | ); |
| 135 | |
| 136 | static int |
| 137 | RndisFilterSetPacketFilter( |
| 138 | RNDIS_DEVICE *Device, |
| 139 | UINT32 NewFilter |
| 140 | ); |
| 141 | |
| 142 | static int |
| 143 | RndisFilterInitDevice( |
| 144 | RNDIS_DEVICE *Device |
| 145 | ); |
| 146 | |
| 147 | static int |
| 148 | RndisFilterOpenDevice( |
| 149 | RNDIS_DEVICE *Device |
| 150 | ); |
| 151 | |
| 152 | static int |
| 153 | RndisFilterCloseDevice( |
| 154 | RNDIS_DEVICE *Device |
| 155 | ); |
| 156 | |
| 157 | static int |
| 158 | RndisFilterOnDeviceAdd( |
| 159 | DEVICE_OBJECT *Device, |
| 160 | void *AdditionalInfo |
| 161 | ); |
| 162 | |
| 163 | static int |
| 164 | RndisFilterOnDeviceRemove( |
| 165 | DEVICE_OBJECT *Device |
| 166 | ); |
| 167 | |
| 168 | static void |
| 169 | RndisFilterOnCleanup( |
| 170 | DRIVER_OBJECT *Driver |
| 171 | ); |
| 172 | |
| 173 | static int |
| 174 | RndisFilterOnOpen( |
| 175 | DEVICE_OBJECT *Device |
| 176 | ); |
| 177 | |
| 178 | static int |
| 179 | RndisFilterOnClose( |
| 180 | DEVICE_OBJECT *Device |
| 181 | ); |
| 182 | |
| 183 | static int |
| 184 | RndisFilterOnSend( |
| 185 | DEVICE_OBJECT *Device, |
| 186 | NETVSC_PACKET *Packet |
| 187 | ); |
| 188 | |
| 189 | static void |
| 190 | RndisFilterOnSendCompletion( |
| 191 | void *Context |
| 192 | ); |
| 193 | |
| 194 | static void |
| 195 | RndisFilterOnSendRequestCompletion( |
| 196 | void *Context |
| 197 | ); |
| 198 | |
| 199 | // |
| 200 | // Global var |
| 201 | // |
| 202 | |
| 203 | // The one and only |
| 204 | RNDIS_FILTER_DRIVER_OBJECT gRndisFilter; |
| 205 | |
| 206 | static inline RNDIS_DEVICE* GetRndisDevice(void) |
| 207 | { |
| 208 | RNDIS_DEVICE *device; |
| 209 | |
| 210 | device = MemAllocZeroed(sizeof(RNDIS_DEVICE)); |
| 211 | if (!device) |
| 212 | { |
| 213 | return NULL; |
| 214 | } |
| 215 | |
| 216 | device->RequestLock = SpinlockCreate(); |
| 217 | if (!device->RequestLock) |
| 218 | { |
| 219 | MemFree(device); |
| 220 | return NULL; |
| 221 | } |
| 222 | |
| 223 | INITIALIZE_LIST_HEAD(&device->RequestList); |
| 224 | |
| 225 | device->State = RNDIS_DEV_UNINITIALIZED; |
| 226 | |
| 227 | return device; |
| 228 | } |
| 229 | |
| 230 | static inline void PutRndisDevice(RNDIS_DEVICE *Device) |
| 231 | { |
| 232 | SpinlockClose(Device->RequestLock); |
| 233 | MemFree(Device); |
| 234 | } |
| 235 | |
| 236 | static inline RNDIS_REQUEST* GetRndisRequest(RNDIS_DEVICE *Device, UINT32 MessageType, UINT32 MessageLength) |
| 237 | { |
| 238 | RNDIS_REQUEST *request; |
| 239 | RNDIS_MESSAGE *rndisMessage; |
| 240 | RNDIS_SET_REQUEST *set; |
| 241 | |
| 242 | request = MemAllocZeroed(sizeof(RNDIS_REQUEST)); |
| 243 | if (!request) |
| 244 | { |
| 245 | return NULL; |
| 246 | } |
| 247 | |
| 248 | request->WaitEvent = WaitEventCreate(); |
| 249 | if (!request->WaitEvent) |
| 250 | { |
| 251 | MemFree(request); |
| 252 | return NULL; |
| 253 | } |
| 254 | |
| 255 | rndisMessage = &request->RequestMessage; |
| 256 | rndisMessage->NdisMessageType = MessageType; |
| 257 | rndisMessage->MessageLength = MessageLength; |
| 258 | |
| 259 | // Set the request id. This field is always after the rndis header for request/response packet types so |
| 260 | // we just used the SetRequest as a template |
| 261 | set = &rndisMessage->Message.SetRequest; |
| 262 | set->RequestId = InterlockedIncrement((int*)&Device->NewRequestId); |
| 263 | |
| 264 | // Add to the request list |
| 265 | SpinlockAcquire(Device->RequestLock); |
| 266 | INSERT_TAIL_LIST(&Device->RequestList, &request->ListEntry); |
| 267 | SpinlockRelease(Device->RequestLock); |
| 268 | |
| 269 | return request; |
| 270 | } |
| 271 | |
| 272 | static inline void PutRndisRequest(RNDIS_DEVICE *Device, RNDIS_REQUEST *Request) |
| 273 | { |
| 274 | SpinlockAcquire(Device->RequestLock); |
| 275 | REMOVE_ENTRY_LIST(&Request->ListEntry); |
| 276 | SpinlockRelease(Device->RequestLock); |
| 277 | |
| 278 | WaitEventClose(Request->WaitEvent); |
| 279 | MemFree(Request); |
| 280 | } |
| 281 | |
| 282 | static inline void DumpRndisMessage(RNDIS_MESSAGE *RndisMessage) |
| 283 | { |
| 284 | switch (RndisMessage->NdisMessageType) |
| 285 | { |
| 286 | case REMOTE_NDIS_PACKET_MSG: |
| 287 | 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", |
| 288 | RndisMessage->MessageLength, |
| 289 | RndisMessage->Message.Packet.DataOffset, |
| 290 | RndisMessage->Message.Packet.DataLength, |
| 291 | RndisMessage->Message.Packet.NumOOBDataElements, |
| 292 | RndisMessage->Message.Packet.OOBDataOffset, |
| 293 | RndisMessage->Message.Packet.OOBDataLength, |
| 294 | RndisMessage->Message.Packet.PerPacketInfoOffset, |
| 295 | RndisMessage->Message.Packet.PerPacketInfoLength); |
| 296 | break; |
| 297 | |
| 298 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
| 299 | 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)", |
| 300 | RndisMessage->MessageLength, |
| 301 | RndisMessage->Message.InitializeComplete.RequestId, |
| 302 | RndisMessage->Message.InitializeComplete.Status, |
| 303 | RndisMessage->Message.InitializeComplete.MajorVersion, |
| 304 | RndisMessage->Message.InitializeComplete.MinorVersion, |
| 305 | RndisMessage->Message.InitializeComplete.DeviceFlags, |
| 306 | RndisMessage->Message.InitializeComplete.MaxTransferSize, |
| 307 | RndisMessage->Message.InitializeComplete.MaxPacketsPerMessage, |
| 308 | RndisMessage->Message.InitializeComplete.PacketAlignmentFactor); |
| 309 | break; |
| 310 | |
| 311 | case REMOTE_NDIS_QUERY_CMPLT: |
| 312 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_QUERY_CMPLT (len %u, id 0x%x, status 0x%x, buf len %u, buf offset %u)", |
| 313 | RndisMessage->MessageLength, |
| 314 | RndisMessage->Message.QueryComplete.RequestId, |
| 315 | RndisMessage->Message.QueryComplete.Status, |
| 316 | RndisMessage->Message.QueryComplete.InformationBufferLength, |
| 317 | RndisMessage->Message.QueryComplete.InformationBufferOffset); |
| 318 | break; |
| 319 | |
| 320 | case REMOTE_NDIS_SET_CMPLT: |
| 321 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)", |
| 322 | RndisMessage->MessageLength, |
| 323 | RndisMessage->Message.SetComplete.RequestId, |
| 324 | RndisMessage->Message.SetComplete.Status); |
| 325 | break; |
| 326 | |
| 327 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
| 328 | DPRINT_DBG(NETVSC, "REMOTE_NDIS_INDICATE_STATUS_MSG (len %u, status 0x%x, buf len %u, buf offset %u)", |
| 329 | RndisMessage->MessageLength, |
| 330 | RndisMessage->Message.IndicateStatus.Status, |
| 331 | RndisMessage->Message.IndicateStatus.StatusBufferLength, |
| 332 | RndisMessage->Message.IndicateStatus.StatusBufferOffset); |
| 333 | break; |
| 334 | |
| 335 | default: |
| 336 | DPRINT_DBG(NETVSC, "0x%x (len %u)", |
| 337 | RndisMessage->NdisMessageType, |
| 338 | RndisMessage->MessageLength); |
| 339 | break; |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | static int |
| 344 | RndisFilterSendRequest( |
| 345 | RNDIS_DEVICE *Device, |
| 346 | RNDIS_REQUEST *Request |
| 347 | ) |
| 348 | { |
| 349 | int ret=0; |
| 350 | NETVSC_PACKET *packet; |
| 351 | |
| 352 | DPRINT_ENTER(NETVSC); |
| 353 | |
| 354 | // Setup the packet to send it |
| 355 | packet = &Request->Packet; |
| 356 | |
| 357 | packet->IsDataPacket = FALSE; |
| 358 | packet->TotalDataBufferLength = Request->RequestMessage.MessageLength; |
| 359 | packet->PageBufferCount = 1; |
| 360 | |
| 361 | packet->PageBuffers[0].Pfn = GetPhysicalAddress(&Request->RequestMessage) >> PAGE_SHIFT; |
| 362 | packet->PageBuffers[0].Length = Request->RequestMessage.MessageLength; |
| 363 | packet->PageBuffers[0].Offset = (ULONG_PTR)&Request->RequestMessage & (PAGE_SIZE -1); |
| 364 | |
| 365 | packet->Completion.Send.SendCompletionContext = Request;//packet; |
| 366 | packet->Completion.Send.OnSendCompletion = RndisFilterOnSendRequestCompletion; |
| 367 | packet->Completion.Send.SendCompletionTid = (ULONG_PTR)Device; |
| 368 | |
| 369 | ret = gRndisFilter.InnerDriver.OnSend(Device->NetDevice->Device, packet); |
| 370 | DPRINT_EXIT(NETVSC); |
| 371 | return ret; |
| 372 | } |
| 373 | |
| 374 | |
| 375 | static void |
| 376 | RndisFilterReceiveResponse( |
| 377 | RNDIS_DEVICE *Device, |
| 378 | RNDIS_MESSAGE *Response |
| 379 | ) |
| 380 | { |
| 381 | LIST_ENTRY *anchor; |
| 382 | LIST_ENTRY *curr; |
| 383 | RNDIS_REQUEST *request=NULL; |
| 384 | BOOL found=FALSE; |
| 385 | |
| 386 | DPRINT_ENTER(NETVSC); |
| 387 | |
| 388 | SpinlockAcquire(Device->RequestLock); |
| 389 | ITERATE_LIST_ENTRIES(anchor, curr, &Device->RequestList) |
| 390 | { |
| 391 | request = CONTAINING_RECORD(curr, RNDIS_REQUEST, ListEntry); |
| 392 | |
| 393 | // All request/response message contains RequestId as the 1st field |
| 394 | if (request->RequestMessage.Message.InitializeRequest.RequestId == Response->Message.InitializeComplete.RequestId) |
| 395 | { |
| 396 | DPRINT_DBG(NETVSC, "found rndis request for this response (id 0x%x req type 0x%x res type 0x%x)", |
| 397 | request->RequestMessage.Message.InitializeRequest.RequestId, request->RequestMessage.NdisMessageType, Response->NdisMessageType); |
| 398 | |
| 399 | found = TRUE; |
| 400 | break; |
| 401 | } |
| 402 | } |
| 403 | SpinlockRelease(Device->RequestLock); |
| 404 | |
| 405 | if (found) |
| 406 | { |
| 407 | if (Response->MessageLength <= sizeof(RNDIS_MESSAGE)) |
| 408 | { |
| 409 | memcpy(&request->ResponseMessage, Response, Response->MessageLength); |
| 410 | } |
| 411 | else |
| 412 | { |
| 413 | DPRINT_ERR(NETVSC, "rndis response buffer overflow detected (size %u max %u)", Response->MessageLength, sizeof(RNDIS_FILTER_PACKET)); |
| 414 | |
| 415 | if (Response->NdisMessageType == REMOTE_NDIS_RESET_CMPLT) // does not have a request id field |
| 416 | { |
| 417 | request->ResponseMessage.Message.ResetComplete.Status = STATUS_BUFFER_OVERFLOW; |
| 418 | } |
| 419 | else |
| 420 | { |
| 421 | request->ResponseMessage.Message.InitializeComplete.Status = STATUS_BUFFER_OVERFLOW; |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | WaitEventSet(request->WaitEvent); |
| 426 | } |
| 427 | else |
| 428 | { |
| 429 | DPRINT_ERR(NETVSC, "no rndis request found for this response (id 0x%x res type 0x%x)", |
| 430 | Response->Message.InitializeComplete.RequestId, Response->NdisMessageType); |
| 431 | } |
| 432 | |
| 433 | DPRINT_EXIT(NETVSC); |
| 434 | } |
| 435 | |
| 436 | static void |
| 437 | RndisFilterReceiveIndicateStatus( |
| 438 | RNDIS_DEVICE *Device, |
| 439 | RNDIS_MESSAGE *Response |
| 440 | ) |
| 441 | { |
| 442 | RNDIS_INDICATE_STATUS *indicate = &Response->Message.IndicateStatus; |
| 443 | |
| 444 | if (indicate->Status == RNDIS_STATUS_MEDIA_CONNECT) |
| 445 | { |
| 446 | gRndisFilter.InnerDriver.OnLinkStatusChanged(Device->NetDevice->Device, 1); |
| 447 | } |
| 448 | else if (indicate->Status == RNDIS_STATUS_MEDIA_DISCONNECT) |
| 449 | { |
| 450 | gRndisFilter.InnerDriver.OnLinkStatusChanged(Device->NetDevice->Device, 0); |
| 451 | } |
| 452 | else |
| 453 | { |
| 454 | // TODO: |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | static void |
| 459 | RndisFilterReceiveData( |
| 460 | RNDIS_DEVICE *Device, |
| 461 | RNDIS_MESSAGE *Message, |
| 462 | NETVSC_PACKET *Packet |
| 463 | ) |
| 464 | { |
| 465 | RNDIS_PACKET *rndisPacket; |
| 466 | UINT32 dataOffset; |
| 467 | |
| 468 | DPRINT_ENTER(NETVSC); |
| 469 | |
| 470 | // empty ethernet frame ?? |
| 471 | ASSERT(Packet->PageBuffers[0].Length > RNDIS_MESSAGE_SIZE(RNDIS_PACKET)); |
| 472 | |
| 473 | rndisPacket = &Message->Message.Packet; |
| 474 | |
| 475 | // FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this |
| 476 | // netvsc packet (ie TotalDataBufferLength != MessageLength) |
| 477 | |
| 478 | // Remove the rndis header and pass it back up the stack |
| 479 | dataOffset = RNDIS_HEADER_SIZE + rndisPacket->DataOffset; |
| 480 | |
| 481 | Packet->TotalDataBufferLength -= dataOffset; |
| 482 | Packet->PageBuffers[0].Offset += dataOffset; |
| 483 | Packet->PageBuffers[0].Length -= dataOffset; |
| 484 | |
| 485 | Packet->IsDataPacket = TRUE; |
| 486 | |
| 487 | gRndisFilter.InnerDriver.OnReceiveCallback(Device->NetDevice->Device, Packet); |
| 488 | |
| 489 | DPRINT_EXIT(NETVSC); |
| 490 | } |
| 491 | |
| 492 | static int |
| 493 | RndisFilterOnReceive( |
| 494 | DEVICE_OBJECT *Device, |
| 495 | NETVSC_PACKET *Packet |
| 496 | ) |
| 497 | { |
| 498 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 499 | RNDIS_DEVICE *rndisDevice; |
| 500 | RNDIS_MESSAGE rndisMessage; |
| 501 | RNDIS_MESSAGE *rndisHeader; |
| 502 | |
| 503 | DPRINT_ENTER(NETVSC); |
| 504 | |
| 505 | ASSERT(netDevice); |
| 506 | //Make sure the rndis device state is initialized |
| 507 | if (!netDevice->Extension) |
| 508 | { |
| 509 | DPRINT_ERR(NETVSC, "got rndis message but no rndis device...dropping this message!"); |
| 510 | DPRINT_EXIT(NETVSC); |
| 511 | return -1; |
| 512 | } |
| 513 | |
| 514 | rndisDevice = (RNDIS_DEVICE*)netDevice->Extension; |
| 515 | if (rndisDevice->State == RNDIS_DEV_UNINITIALIZED) |
| 516 | { |
| 517 | DPRINT_ERR(NETVSC, "got rndis message but rndis device uninitialized...dropping this message!"); |
| 518 | DPRINT_EXIT(NETVSC); |
| 519 | return -1; |
| 520 | } |
| 521 | |
| 522 | rndisHeader = (RNDIS_MESSAGE*)PageMapVirtualAddress(Packet->PageBuffers[0].Pfn); |
| 523 | |
| 524 | rndisHeader = (void*)((ULONG_PTR)rndisHeader + Packet->PageBuffers[0].Offset); |
| 525 | |
| 526 | // Make sure we got a valid rndis message |
| 527 | // FIXME: There seems to be a bug in set completion msg where its MessageLength is 16 bytes but |
| 528 | // the ByteCount field in the xfer page range shows 52 bytes |
| 529 | #if 0 |
| 530 | if ( Packet->TotalDataBufferLength != rndisHeader->MessageLength ) |
| 531 | { |
| 532 | PageUnmapVirtualAddress((void*)(ULONG_PTR)rndisHeader - Packet->PageBuffers[0].Offset); |
| 533 | |
| 534 | DPRINT_ERR(NETVSC, "invalid rndis message? (expected %u bytes got %u)...dropping this message!", |
| 535 | rndisHeader->MessageLength, Packet->TotalDataBufferLength); |
| 536 | DPRINT_EXIT(NETVSC); |
| 537 | return -1; |
| 538 | } |
| 539 | #endif |
| 540 | |
| 541 | if ((rndisHeader->NdisMessageType != REMOTE_NDIS_PACKET_MSG) && (rndisHeader->MessageLength > sizeof(RNDIS_MESSAGE))) |
| 542 | { |
| 543 | DPRINT_ERR(NETVSC, "incoming rndis message buffer overflow detected (got %u, max %u)...marking it an error!", |
| 544 | rndisHeader->MessageLength, sizeof(RNDIS_MESSAGE)); |
| 545 | } |
| 546 | |
| 547 | memcpy(&rndisMessage, rndisHeader, (rndisHeader->MessageLength > sizeof(RNDIS_MESSAGE))?sizeof(RNDIS_MESSAGE):rndisHeader->MessageLength); |
| 548 | |
| 549 | PageUnmapVirtualAddress((void*)(ULONG_PTR)rndisHeader - Packet->PageBuffers[0].Offset); |
| 550 | |
| 551 | DumpRndisMessage(&rndisMessage); |
| 552 | |
| 553 | switch (rndisMessage.NdisMessageType) |
| 554 | { |
| 555 | // data msg |
| 556 | case REMOTE_NDIS_PACKET_MSG: |
| 557 | RndisFilterReceiveData(rndisDevice, &rndisMessage, Packet); |
| 558 | break; |
| 559 | |
| 560 | // completion msgs |
| 561 | case REMOTE_NDIS_INITIALIZE_CMPLT: |
| 562 | case REMOTE_NDIS_QUERY_CMPLT: |
| 563 | case REMOTE_NDIS_SET_CMPLT: |
| 564 | //case REMOTE_NDIS_RESET_CMPLT: |
| 565 | //case REMOTE_NDIS_KEEPALIVE_CMPLT: |
| 566 | RndisFilterReceiveResponse(rndisDevice, &rndisMessage); |
| 567 | break; |
| 568 | |
| 569 | // notification msgs |
| 570 | case REMOTE_NDIS_INDICATE_STATUS_MSG: |
| 571 | RndisFilterReceiveIndicateStatus(rndisDevice, &rndisMessage); |
| 572 | break; |
| 573 | default: |
| 574 | DPRINT_ERR(NETVSC, "unhandled rndis message (type %u len %u)", rndisMessage.NdisMessageType, rndisMessage.MessageLength); |
| 575 | break; |
| 576 | } |
| 577 | |
| 578 | DPRINT_EXIT(NETVSC); |
| 579 | return 0; |
| 580 | } |
| 581 | |
| 582 | |
| 583 | static int |
| 584 | RndisFilterQueryDevice( |
| 585 | RNDIS_DEVICE *Device, |
| 586 | UINT32 Oid, |
| 587 | VOID *Result, |
| 588 | UINT32 *ResultSize |
| 589 | ) |
| 590 | { |
| 591 | RNDIS_REQUEST *request; |
| 592 | UINT32 inresultSize = *ResultSize; |
| 593 | RNDIS_QUERY_REQUEST *query; |
| 594 | RNDIS_QUERY_COMPLETE *queryComplete; |
| 595 | int ret=0; |
| 596 | |
| 597 | DPRINT_ENTER(NETVSC); |
| 598 | |
| 599 | ASSERT(Result); |
| 600 | |
| 601 | *ResultSize = 0; |
| 602 | request = GetRndisRequest(Device, REMOTE_NDIS_QUERY_MSG, RNDIS_MESSAGE_SIZE(RNDIS_QUERY_REQUEST)); |
| 603 | if (!request) |
| 604 | { |
| 605 | ret = -1; |
| 606 | goto Cleanup; |
| 607 | } |
| 608 | |
| 609 | // Setup the rndis query |
| 610 | query = &request->RequestMessage.Message.QueryRequest; |
| 611 | query->Oid = Oid; |
| 612 | query->InformationBufferOffset = sizeof(RNDIS_QUERY_REQUEST); |
| 613 | query->InformationBufferLength = 0; |
| 614 | query->DeviceVcHandle = 0; |
| 615 | |
| 616 | ret = RndisFilterSendRequest(Device, request); |
| 617 | if (ret != 0) |
| 618 | { |
| 619 | goto Cleanup; |
| 620 | } |
| 621 | |
| 622 | WaitEventWait(request->WaitEvent); |
| 623 | |
| 624 | // Copy the response back |
| 625 | queryComplete = &request->ResponseMessage.Message.QueryComplete; |
| 626 | |
| 627 | if (queryComplete->InformationBufferLength > inresultSize) |
| 628 | { |
| 629 | ret = -1; |
| 630 | goto Cleanup; |
| 631 | } |
| 632 | |
| 633 | memcpy(Result, |
| 634 | (void*)((ULONG_PTR)queryComplete + queryComplete->InformationBufferOffset), |
| 635 | queryComplete->InformationBufferLength); |
| 636 | |
| 637 | *ResultSize = queryComplete->InformationBufferLength; |
| 638 | |
| 639 | Cleanup: |
| 640 | if (request) |
| 641 | { |
| 642 | PutRndisRequest(Device, request); |
| 643 | } |
| 644 | DPRINT_EXIT(NETVSC); |
| 645 | |
| 646 | return ret; |
| 647 | } |
| 648 | |
| 649 | static inline int |
| 650 | RndisFilterQueryDeviceMac( |
| 651 | RNDIS_DEVICE *Device |
| 652 | ) |
| 653 | { |
| 654 | UINT32 size=HW_MACADDR_LEN; |
| 655 | |
| 656 | return RndisFilterQueryDevice(Device, |
| 657 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
| 658 | Device->HwMacAddr, |
| 659 | &size); |
| 660 | } |
| 661 | |
| 662 | static inline int |
| 663 | RndisFilterQueryDeviceLinkStatus( |
| 664 | RNDIS_DEVICE *Device |
| 665 | ) |
| 666 | { |
| 667 | UINT32 size=sizeof(UINT32); |
| 668 | |
| 669 | return RndisFilterQueryDevice(Device, |
| 670 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
| 671 | &Device->LinkStatus, |
| 672 | &size); |
| 673 | } |
| 674 | |
| 675 | static int |
| 676 | RndisFilterSetPacketFilter( |
| 677 | RNDIS_DEVICE *Device, |
| 678 | UINT32 NewFilter |
| 679 | ) |
| 680 | { |
| 681 | RNDIS_REQUEST *request; |
| 682 | RNDIS_SET_REQUEST *set; |
| 683 | RNDIS_SET_COMPLETE *setComplete; |
| 684 | UINT32 status; |
| 685 | int ret; |
| 686 | |
| 687 | DPRINT_ENTER(NETVSC); |
| 688 | |
| 689 | ASSERT(RNDIS_MESSAGE_SIZE(RNDIS_SET_REQUEST) + sizeof(UINT32) <= sizeof(RNDIS_MESSAGE)); |
| 690 | |
| 691 | request = GetRndisRequest(Device, REMOTE_NDIS_SET_MSG, RNDIS_MESSAGE_SIZE(RNDIS_SET_REQUEST) + sizeof(UINT32)); |
| 692 | if (!request) |
| 693 | { |
| 694 | ret = -1; |
| 695 | goto Cleanup; |
| 696 | } |
| 697 | |
| 698 | // Setup the rndis set |
| 699 | set = &request->RequestMessage.Message.SetRequest; |
| 700 | set->Oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER; |
| 701 | set->InformationBufferLength = sizeof(UINT32); |
| 702 | set->InformationBufferOffset = sizeof(RNDIS_SET_REQUEST); |
| 703 | |
| 704 | memcpy((void*)(ULONG_PTR)set + sizeof(RNDIS_SET_REQUEST), &NewFilter, sizeof(UINT32)); |
| 705 | |
| 706 | ret = RndisFilterSendRequest(Device, request); |
| 707 | if (ret != 0) |
| 708 | { |
| 709 | goto Cleanup; |
| 710 | } |
| 711 | |
| 712 | ret = WaitEventWaitEx(request->WaitEvent, 2000/*2sec*/); |
| 713 | if (!ret) |
| 714 | { |
| 715 | ret = -1; |
| 716 | DPRINT_ERR(NETVSC, "timeout before we got a set response..."); |
| 717 | // We cant deallocate the request since we may still receive a send completion for it. |
| 718 | goto Exit; |
| 719 | } |
| 720 | else |
| 721 | { |
| 722 | if (ret > 0) |
| 723 | { |
| 724 | ret = 0; |
| 725 | } |
| 726 | setComplete = &request->ResponseMessage.Message.SetComplete; |
| 727 | status = setComplete->Status; |
| 728 | } |
| 729 | |
| 730 | Cleanup: |
| 731 | if (request) |
| 732 | { |
| 733 | PutRndisRequest(Device, request); |
| 734 | } |
| 735 | Exit: |
| 736 | DPRINT_EXIT(NETVSC); |
| 737 | |
| 738 | return ret; |
| 739 | } |
| 740 | |
| 741 | int |
| 742 | RndisFilterInit( |
| 743 | NETVSC_DRIVER_OBJECT *Driver |
| 744 | ) |
| 745 | { |
| 746 | DPRINT_ENTER(NETVSC); |
| 747 | |
| 748 | DPRINT_DBG(NETVSC, "sizeof(RNDIS_FILTER_PACKET) == %d", sizeof(RNDIS_FILTER_PACKET)); |
| 749 | |
| 750 | Driver->RequestExtSize = sizeof(RNDIS_FILTER_PACKET); |
| 751 | Driver->AdditionalRequestPageBufferCount = 1; // For rndis header |
| 752 | |
| 753 | //Driver->Context = rndisDriver; |
| 754 | |
| 755 | memset(&gRndisFilter, 0, sizeof(RNDIS_FILTER_DRIVER_OBJECT)); |
| 756 | |
| 757 | /*rndisDriver->Driver = Driver; |
| 758 | |
| 759 | ASSERT(Driver->OnLinkStatusChanged); |
| 760 | rndisDriver->OnLinkStatusChanged = Driver->OnLinkStatusChanged;*/ |
| 761 | |
| 762 | // Save the original dispatch handlers before we override it |
| 763 | gRndisFilter.InnerDriver.Base.OnDeviceAdd = Driver->Base.OnDeviceAdd; |
| 764 | gRndisFilter.InnerDriver.Base.OnDeviceRemove = Driver->Base.OnDeviceRemove; |
| 765 | gRndisFilter.InnerDriver.Base.OnCleanup = Driver->Base.OnCleanup; |
| 766 | |
| 767 | ASSERT(Driver->OnSend); |
| 768 | ASSERT(Driver->OnReceiveCallback); |
| 769 | gRndisFilter.InnerDriver.OnSend = Driver->OnSend; |
| 770 | gRndisFilter.InnerDriver.OnReceiveCallback = Driver->OnReceiveCallback; |
| 771 | gRndisFilter.InnerDriver.OnLinkStatusChanged = Driver->OnLinkStatusChanged; |
| 772 | |
| 773 | // Override |
| 774 | Driver->Base.OnDeviceAdd = RndisFilterOnDeviceAdd; |
| 775 | Driver->Base.OnDeviceRemove = RndisFilterOnDeviceRemove; |
| 776 | Driver->Base.OnCleanup = RndisFilterOnCleanup; |
| 777 | Driver->OnSend = RndisFilterOnSend; |
| 778 | Driver->OnOpen = RndisFilterOnOpen; |
| 779 | Driver->OnClose = RndisFilterOnClose; |
| 780 | //Driver->QueryLinkStatus = RndisFilterQueryDeviceLinkStatus; |
| 781 | Driver->OnReceiveCallback = RndisFilterOnReceive; |
| 782 | |
| 783 | DPRINT_EXIT(NETVSC); |
| 784 | |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | static int |
| 789 | RndisFilterInitDevice( |
| 790 | RNDIS_DEVICE *Device |
| 791 | ) |
| 792 | { |
| 793 | RNDIS_REQUEST *request; |
| 794 | RNDIS_INITIALIZE_REQUEST *init; |
| 795 | RNDIS_INITIALIZE_COMPLETE *initComplete; |
| 796 | UINT32 status; |
| 797 | int ret; |
| 798 | |
| 799 | DPRINT_ENTER(NETVSC); |
| 800 | |
| 801 | request = GetRndisRequest(Device, REMOTE_NDIS_INITIALIZE_MSG, RNDIS_MESSAGE_SIZE(RNDIS_INITIALIZE_REQUEST)); |
| 802 | if (!request) |
| 803 | { |
| 804 | ret = -1; |
| 805 | goto Cleanup; |
| 806 | } |
| 807 | |
| 808 | // Setup the rndis set |
| 809 | init = &request->RequestMessage.Message.InitializeRequest; |
| 810 | init->MajorVersion = RNDIS_MAJOR_VERSION; |
| 811 | init->MinorVersion = RNDIS_MINOR_VERSION; |
| 812 | init->MaxTransferSize = 2048; // FIXME: Use 1536 - rounded ethernet frame size |
| 813 | |
| 814 | Device->State = RNDIS_DEV_INITIALIZING; |
| 815 | |
| 816 | ret = RndisFilterSendRequest(Device, request); |
| 817 | if (ret != 0) |
| 818 | { |
| 819 | Device->State = RNDIS_DEV_UNINITIALIZED; |
| 820 | goto Cleanup; |
| 821 | } |
| 822 | |
| 823 | WaitEventWait(request->WaitEvent); |
| 824 | |
| 825 | initComplete = &request->ResponseMessage.Message.InitializeComplete; |
| 826 | status = initComplete->Status; |
| 827 | if (status == RNDIS_STATUS_SUCCESS) |
| 828 | { |
| 829 | Device->State = RNDIS_DEV_INITIALIZED; |
| 830 | ret = 0; |
| 831 | } |
| 832 | else |
| 833 | { |
| 834 | Device->State = RNDIS_DEV_UNINITIALIZED; |
| 835 | ret = -1; |
| 836 | } |
| 837 | |
| 838 | Cleanup: |
| 839 | if (request) |
| 840 | { |
| 841 | PutRndisRequest(Device, request); |
| 842 | } |
| 843 | DPRINT_EXIT(NETVSC); |
| 844 | |
| 845 | return ret; |
| 846 | } |
| 847 | |
| 848 | static void |
| 849 | RndisFilterHaltDevice( |
| 850 | RNDIS_DEVICE *Device |
| 851 | ) |
| 852 | { |
| 853 | RNDIS_REQUEST *request; |
| 854 | RNDIS_HALT_REQUEST *halt; |
| 855 | |
| 856 | DPRINT_ENTER(NETVSC); |
| 857 | |
| 858 | // Attempt to do a rndis device halt |
| 859 | request = GetRndisRequest(Device, REMOTE_NDIS_HALT_MSG, RNDIS_MESSAGE_SIZE(RNDIS_HALT_REQUEST)); |
| 860 | if (!request) |
| 861 | { |
| 862 | goto Cleanup; |
| 863 | } |
| 864 | |
| 865 | // Setup the rndis set |
| 866 | halt = &request->RequestMessage.Message.HaltRequest; |
| 867 | halt->RequestId = InterlockedIncrement((int*)&Device->NewRequestId); |
| 868 | |
| 869 | // Ignore return since this msg is optional. |
| 870 | RndisFilterSendRequest(Device, request); |
| 871 | |
| 872 | Device->State = RNDIS_DEV_UNINITIALIZED; |
| 873 | |
| 874 | Cleanup: |
| 875 | if (request) |
| 876 | { |
| 877 | PutRndisRequest(Device, request); |
| 878 | } |
| 879 | DPRINT_EXIT(NETVSC); |
| 880 | return; |
| 881 | } |
| 882 | |
| 883 | |
| 884 | static int |
| 885 | RndisFilterOpenDevice( |
| 886 | RNDIS_DEVICE *Device |
| 887 | ) |
| 888 | { |
| 889 | int ret=0; |
| 890 | |
| 891 | DPRINT_ENTER(NETVSC); |
| 892 | |
| 893 | if (Device->State != RNDIS_DEV_INITIALIZED) |
| 894 | return 0; |
| 895 | |
| 896 | ret = RndisFilterSetPacketFilter(Device, NDIS_PACKET_TYPE_BROADCAST|NDIS_PACKET_TYPE_DIRECTED); |
| 897 | if (ret == 0) |
| 898 | { |
| 899 | Device->State = RNDIS_DEV_DATAINITIALIZED; |
| 900 | } |
| 901 | |
| 902 | DPRINT_EXIT(NETVSC); |
| 903 | return ret; |
| 904 | } |
| 905 | |
| 906 | static int |
| 907 | RndisFilterCloseDevice( |
| 908 | RNDIS_DEVICE *Device |
| 909 | ) |
| 910 | { |
| 911 | int ret; |
| 912 | |
| 913 | DPRINT_ENTER(NETVSC); |
| 914 | |
| 915 | if (Device->State != RNDIS_DEV_DATAINITIALIZED) |
| 916 | return 0; |
| 917 | |
| 918 | ret = RndisFilterSetPacketFilter(Device, 0); |
| 919 | if (ret == 0) |
| 920 | { |
| 921 | Device->State = RNDIS_DEV_INITIALIZED; |
| 922 | } |
| 923 | |
| 924 | DPRINT_EXIT(NETVSC); |
| 925 | |
| 926 | return ret; |
| 927 | } |
| 928 | |
| 929 | |
| 930 | int |
| 931 | RndisFilterOnDeviceAdd( |
| 932 | DEVICE_OBJECT *Device, |
| 933 | void *AdditionalInfo |
| 934 | ) |
| 935 | { |
| 936 | int ret; |
| 937 | NETVSC_DEVICE *netDevice; |
| 938 | RNDIS_DEVICE *rndisDevice; |
| 939 | NETVSC_DEVICE_INFO *deviceInfo = (NETVSC_DEVICE_INFO*)AdditionalInfo; |
| 940 | |
| 941 | DPRINT_ENTER(NETVSC); |
| 942 | |
| 943 | //rndisDevice = MemAlloc(sizeof(RNDIS_DEVICE)); |
| 944 | rndisDevice = GetRndisDevice(); |
| 945 | if (!rndisDevice) |
| 946 | { |
| 947 | DPRINT_EXIT(NETVSC); |
| 948 | return -1; |
| 949 | } |
| 950 | |
| 951 | DPRINT_DBG(NETVSC, "rndis device object allocated - %p", rndisDevice); |
| 952 | |
| 953 | // Let the inner driver handle this first to create the netvsc channel |
| 954 | // NOTE! Once the channel is created, we may get a receive callback |
| 955 | // (RndisFilterOnReceive()) before this call is completed |
| 956 | ret = gRndisFilter.InnerDriver.Base.OnDeviceAdd(Device, AdditionalInfo); |
| 957 | if (ret != 0) |
| 958 | { |
| 959 | PutRndisDevice(rndisDevice); |
| 960 | DPRINT_EXIT(NETVSC); |
| 961 | return ret; |
| 962 | } |
| 963 | |
| 964 | // |
| 965 | // Initialize the rndis device |
| 966 | // |
| 967 | netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 968 | ASSERT(netDevice); |
| 969 | ASSERT(netDevice->Device); |
| 970 | |
| 971 | netDevice->Extension = rndisDevice; |
| 972 | rndisDevice->NetDevice = netDevice; |
| 973 | |
| 974 | // Send the rndis initialization message |
| 975 | ret = RndisFilterInitDevice(rndisDevice); |
| 976 | if (ret != 0) |
| 977 | { |
| 978 | // TODO: If rndis init failed, we will need to shut down the channel |
| 979 | } |
| 980 | |
| 981 | // Get the mac address |
| 982 | ret = RndisFilterQueryDeviceMac(rndisDevice); |
| 983 | if (ret != 0) |
| 984 | { |
| 985 | // TODO: shutdown rndis device and the channel |
| 986 | } |
| 987 | |
| 988 | DPRINT_INFO(NETVSC, "Device 0x%p mac addr %02x%02x%02x%02x%02x%02x", |
| 989 | rndisDevice, |
| 990 | rndisDevice->HwMacAddr[0], |
| 991 | rndisDevice->HwMacAddr[1], |
| 992 | rndisDevice->HwMacAddr[2], |
| 993 | rndisDevice->HwMacAddr[3], |
| 994 | rndisDevice->HwMacAddr[4], |
| 995 | rndisDevice->HwMacAddr[5]); |
| 996 | |
| 997 | memcpy(deviceInfo->MacAddr, rndisDevice->HwMacAddr, HW_MACADDR_LEN); |
| 998 | |
| 999 | RndisFilterQueryDeviceLinkStatus(rndisDevice); |
| 1000 | |
| 1001 | deviceInfo->LinkState = rndisDevice->LinkStatus; |
| 1002 | DPRINT_INFO(NETVSC, "Device 0x%p link state %s", rndisDevice, ((deviceInfo->LinkState)?("down"):("up"))); |
| 1003 | |
| 1004 | DPRINT_EXIT(NETVSC); |
| 1005 | |
| 1006 | return ret; |
| 1007 | } |
| 1008 | |
| 1009 | |
| 1010 | static int |
| 1011 | RndisFilterOnDeviceRemove( |
| 1012 | DEVICE_OBJECT *Device |
| 1013 | ) |
| 1014 | { |
| 1015 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 1016 | RNDIS_DEVICE *rndisDevice = (RNDIS_DEVICE*)netDevice->Extension; |
| 1017 | |
| 1018 | DPRINT_ENTER(NETVSC); |
| 1019 | |
| 1020 | // Halt and release the rndis device |
| 1021 | RndisFilterHaltDevice(rndisDevice); |
| 1022 | |
| 1023 | PutRndisDevice(rndisDevice); |
| 1024 | netDevice->Extension = NULL; |
| 1025 | |
| 1026 | // Pass control to inner driver to remove the device |
| 1027 | gRndisFilter.InnerDriver.Base.OnDeviceRemove(Device); |
| 1028 | |
| 1029 | DPRINT_EXIT(NETVSC); |
| 1030 | |
| 1031 | return 0; |
| 1032 | } |
| 1033 | |
| 1034 | |
| 1035 | static void |
| 1036 | RndisFilterOnCleanup( |
| 1037 | DRIVER_OBJECT *Driver |
| 1038 | ) |
| 1039 | { |
| 1040 | DPRINT_ENTER(NETVSC); |
| 1041 | |
| 1042 | DPRINT_EXIT(NETVSC); |
| 1043 | } |
| 1044 | |
| 1045 | static int |
| 1046 | RndisFilterOnOpen( |
| 1047 | DEVICE_OBJECT *Device |
| 1048 | ) |
| 1049 | { |
| 1050 | int ret; |
| 1051 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 1052 | |
| 1053 | DPRINT_ENTER(NETVSC); |
| 1054 | |
| 1055 | ASSERT(netDevice); |
| 1056 | ret = RndisFilterOpenDevice((RNDIS_DEVICE*)netDevice->Extension); |
| 1057 | |
| 1058 | DPRINT_EXIT(NETVSC); |
| 1059 | |
| 1060 | return ret; |
| 1061 | } |
| 1062 | |
| 1063 | static int |
| 1064 | RndisFilterOnClose( |
| 1065 | DEVICE_OBJECT *Device |
| 1066 | ) |
| 1067 | { |
| 1068 | int ret; |
| 1069 | NETVSC_DEVICE *netDevice = (NETVSC_DEVICE*)Device->Extension; |
| 1070 | |
| 1071 | DPRINT_ENTER(NETVSC); |
| 1072 | |
| 1073 | ASSERT(netDevice); |
| 1074 | ret = RndisFilterCloseDevice((RNDIS_DEVICE*)netDevice->Extension); |
| 1075 | |
| 1076 | DPRINT_EXIT(NETVSC); |
| 1077 | |
| 1078 | return ret; |
| 1079 | } |
| 1080 | |
| 1081 | |
| 1082 | static int |
| 1083 | RndisFilterOnSend( |
| 1084 | DEVICE_OBJECT *Device, |
| 1085 | NETVSC_PACKET *Packet |
| 1086 | ) |
| 1087 | { |
| 1088 | int ret=0; |
| 1089 | RNDIS_FILTER_PACKET *filterPacket; |
| 1090 | RNDIS_MESSAGE *rndisMessage; |
| 1091 | RNDIS_PACKET *rndisPacket; |
| 1092 | UINT32 rndisMessageSize; |
| 1093 | |
| 1094 | DPRINT_ENTER(NETVSC); |
| 1095 | |
| 1096 | // Add the rndis header |
| 1097 | filterPacket = (RNDIS_FILTER_PACKET*)Packet->Extension; |
| 1098 | ASSERT(filterPacket); |
| 1099 | |
| 1100 | memset(filterPacket, 0, sizeof(RNDIS_FILTER_PACKET)); |
| 1101 | |
| 1102 | rndisMessage = &filterPacket->Message; |
| 1103 | rndisMessageSize = RNDIS_MESSAGE_SIZE(RNDIS_PACKET); |
| 1104 | |
| 1105 | rndisMessage->NdisMessageType = REMOTE_NDIS_PACKET_MSG; |
| 1106 | rndisMessage->MessageLength = Packet->TotalDataBufferLength + rndisMessageSize; |
| 1107 | |
| 1108 | rndisPacket = &rndisMessage->Message.Packet; |
| 1109 | rndisPacket->DataOffset = sizeof(RNDIS_PACKET); |
| 1110 | rndisPacket->DataLength = Packet->TotalDataBufferLength; |
| 1111 | |
| 1112 | Packet->IsDataPacket = TRUE; |
| 1113 | Packet->PageBuffers[0].Pfn = GetPhysicalAddress(rndisMessage) >> PAGE_SHIFT; |
| 1114 | Packet->PageBuffers[0].Offset = (ULONG_PTR)rndisMessage & (PAGE_SIZE-1); |
| 1115 | Packet->PageBuffers[0].Length = rndisMessageSize; |
| 1116 | |
| 1117 | // Save the packet send completion and context |
| 1118 | filterPacket->OnCompletion = Packet->Completion.Send.OnSendCompletion; |
| 1119 | filterPacket->CompletionContext = Packet->Completion.Send.SendCompletionContext; |
| 1120 | |
| 1121 | // Use ours |
| 1122 | Packet->Completion.Send.OnSendCompletion = RndisFilterOnSendCompletion; |
| 1123 | Packet->Completion.Send.SendCompletionContext = filterPacket; |
| 1124 | |
| 1125 | ret = gRndisFilter.InnerDriver.OnSend(Device, Packet); |
| 1126 | if (ret != 0) |
| 1127 | { |
| 1128 | // Reset the completion to originals to allow retries from above |
| 1129 | Packet->Completion.Send.OnSendCompletion = filterPacket->OnCompletion; |
| 1130 | Packet->Completion.Send.SendCompletionContext = filterPacket->CompletionContext; |
| 1131 | } |
| 1132 | |
| 1133 | DPRINT_EXIT(NETVSC); |
| 1134 | |
| 1135 | return ret; |
| 1136 | } |
| 1137 | |
| 1138 | static void |
| 1139 | RndisFilterOnSendCompletion( |
| 1140 | void *Context) |
| 1141 | { |
| 1142 | RNDIS_FILTER_PACKET *filterPacket = (RNDIS_FILTER_PACKET *)Context; |
| 1143 | |
| 1144 | DPRINT_ENTER(NETVSC); |
| 1145 | |
| 1146 | // Pass it back to the original handler |
| 1147 | filterPacket->OnCompletion(filterPacket->CompletionContext); |
| 1148 | |
| 1149 | DPRINT_EXIT(NETVSC); |
| 1150 | } |
| 1151 | |
| 1152 | |
| 1153 | static void |
| 1154 | RndisFilterOnSendRequestCompletion( |
| 1155 | void *Context |
| 1156 | ) |
| 1157 | { |
| 1158 | DPRINT_ENTER(NETVSC); |
| 1159 | |
| 1160 | // Noop |
| 1161 | DPRINT_EXIT(NETVSC); |
| 1162 | } |