DrvVDE.cpp@ 49435

Last change on this file since 49435 was 45061, checked in by vboxsync, 12 years ago
Review of PDM driver destructors making sure that variables they use are correctly initialized in the constructor. Found several RTFileClose(0) cases.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 22.9 KB

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1	/* $Id: DrvVDE.cpp 45061 2013-03-18 14:09:03Z vboxsync $ */
2	/** @file
3	* VDE network transport driver.
4	*/
5
6	/*
7	* Contributed by Renzo Davoli. VirtualSquare. University of Bologna, 2010
8	* Copyright (C) 2006-2012 Oracle Corporation
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_TUN
23	#include <VBox/log.h>
24	#include <VBox/vmm/pdmdrv.h>
25	#include <VBox/vmm/pdmnetifs.h>
26	#include <VBox/vmm/pdmnetinline.h>
27	#include <VBox/VDEPlug.h>
28
29	#include <iprt/asm.h>
30	#include <iprt/assert.h>
31	#include <iprt/ctype.h>
32	#include <iprt/file.h>
33	#include <iprt/mem.h>
34	#include <iprt/param.h>
35	#include <iprt/path.h>
36	#include <iprt/pipe.h>
37	#include <iprt/semaphore.h>
38	#include <iprt/string.h>
39	#include <iprt/thread.h>
40	#include <iprt/uuid.h>
41
42	#include <sys/ioctl.h>
43	#include <sys/poll.h>
44	#include <sys/fcntl.h>
45	#include <errno.h>
46	#include <unistd.h>
47
48	#include "VBoxDD.h"
49
50
51	/*******************************************************************************
52	* Structures and Typedefs *
53	*******************************************************************************/
54	/**
55	* VDE driver instance data.
56	*
57	* @implements PDMINETWORKUP
58	*/
59	typedef struct DRVVDE
60	{
61	/** The network interface. */
62	PDMINETWORKUP INetworkUp;
63	/** The network interface. */
64	PPDMINETWORKDOWN pIAboveNet;
65	/** Pointer to the driver instance. */
66	PPDMDRVINS pDrvIns;
67	/** The configured VDE device name. */
68	char *pszDeviceName;
69	/** The write end of the control pipe. */
70	RTPIPE hPipeWrite;
71	/** The read end of the control pipe. */
72	RTPIPE hPipeRead;
73	/** Reader thread. */
74	PPDMTHREAD pThread;
75	/** The connection to the VDE switch */
76	VDECONN *pVdeConn;
77
78	/** @todo The transmit thread. */
79	/** Transmit lock used by drvTAPNetworkUp_BeginXmit. */
80	RTCRITSECT XmitLock;
81
82	#ifdef VBOX_WITH_STATISTICS
83	/** Number of sent packets. */
84	STAMCOUNTER StatPktSent;
85	/** Number of sent bytes. */
86	STAMCOUNTER StatPktSentBytes;
87	/** Number of received packets. */
88	STAMCOUNTER StatPktRecv;
89	/** Number of received bytes. */
90	STAMCOUNTER StatPktRecvBytes;
91	/** Profiling packet transmit runs. */
92	STAMPROFILE StatTransmit;
93	/** Profiling packet receive runs. */
94	STAMPROFILEADV StatReceive;
95	#endif /* VBOX_WITH_STATISTICS */
96
97	#ifdef LOG_ENABLED
98	/** The nano ts of the last transfer. */
99	uint64_t u64LastTransferTS;
100	/** The nano ts of the last receive. */
101	uint64_t u64LastReceiveTS;
102	#endif
103	} DRVVDE, *PDRVVDE;
104
105
106	/** Converts a pointer to VDE::INetworkUp to a PRDVVDE. */
107	#define PDMINETWORKUP_2_DRVVDE(pInterface) ( (PDRVVDE)((uintptr_t)pInterface - RT_OFFSETOF(DRVVDE, INetworkUp)) )
108
109
110	/*******************************************************************************
111	* Internal Functions *
112	*******************************************************************************/
113
114
115
116	/**
117	* @interface_method_impl{PDMINETWORKUP,pfnBeginXmit}
118	*/
119	static DECLCALLBACK(int) drvVDENetworkUp_BeginXmit(PPDMINETWORKUP pInterface, bool fOnWorkerThread)
120	{
121	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
122	int rc = RTCritSectTryEnter(&pThis->XmitLock);
123	if (RT_FAILURE(rc))
124	{
125	/** @todo XMIT thread */
126	rc = VERR_TRY_AGAIN;
127	}
128	return rc;
129	}
130
131
132	/**
133	* @interface_method_impl{PDMINETWORKUP,pfnAllocBuf}
134	*/
135	static DECLCALLBACK(int) drvVDENetworkUp_AllocBuf(PPDMINETWORKUP pInterface, size_t cbMin,
136	PCPDMNETWORKGSO pGso, PPPDMSCATTERGATHER ppSgBuf)
137	{
138	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
139	Assert(RTCritSectIsOwner(&pThis->XmitLock));
140
141	/*
142	* Allocate a scatter / gather buffer descriptor that is immediately
143	* followed by the buffer space of its single segment. The GSO context
144	* comes after that again.
145	*/
146	PPDMSCATTERGATHER pSgBuf = (PPDMSCATTERGATHER)RTMemAlloc( RT_ALIGN_Z(sizeof(*pSgBuf), 16)
147	+ RT_ALIGN_Z(cbMin, 16)
148	+ (pGso ? RT_ALIGN_Z(sizeof(*pGso), 16) : 0));
149	if (!pSgBuf)
150	return VERR_NO_MEMORY;
151
152	/*
153	* Initialize the S/G buffer and return.
154	*/
155	pSgBuf->fFlags = PDMSCATTERGATHER_FLAGS_MAGIC \| PDMSCATTERGATHER_FLAGS_OWNER_1;
156	pSgBuf->cbUsed = 0;
157	pSgBuf->cbAvailable = RT_ALIGN_Z(cbMin, 16);
158	pSgBuf->pvAllocator = NULL;
159	if (!pGso)
160	pSgBuf->pvUser = NULL;
161	else
162	{
163	pSgBuf->pvUser = (uint8_t *)(pSgBuf + 1) + pSgBuf->cbAvailable;
164	(PPDMNETWORKGSO)pSgBuf->pvUser = pGso;
165	}
166	pSgBuf->cSegs = 1;
167	pSgBuf->aSegs[0].cbSeg = pSgBuf->cbAvailable;
168	pSgBuf->aSegs[0].pvSeg = pSgBuf + 1;
169
170	#if 0 /* poison */
171	memset(pSgBuf->aSegs[0].pvSeg, 'F', pSgBuf->aSegs[0].cbSeg);
172	#endif
173	*ppSgBuf = pSgBuf;
174	return VINF_SUCCESS;
175	}
176
177
178	/**
179	* @interface_method_impl{PDMINETWORKUP,pfnFreeBuf}
180	*/
181	static DECLCALLBACK(int) drvVDENetworkUp_FreeBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf)
182	{
183	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
184	Assert(RTCritSectIsOwner(&pThis->XmitLock));
185	if (pSgBuf)
186	{
187	Assert((pSgBuf->fFlags & PDMSCATTERGATHER_FLAGS_MAGIC_MASK) == PDMSCATTERGATHER_FLAGS_MAGIC);
188	pSgBuf->fFlags = 0;
189	RTMemFree(pSgBuf);
190	}
191	return VINF_SUCCESS;
192	}
193
194
195	/**
196	* @interface_method_impl{PDMINETWORKUP,pfnSendBuf}
197	*/
198	static DECLCALLBACK(int) drvVDENetworkUp_SendBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread)
199	{
200	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
201	STAM_COUNTER_INC(&pThis->StatPktSent);
202	STAM_COUNTER_ADD(&pThis->StatPktSentBytes, pSgBuf->cbUsed);
203	STAM_PROFILE_START(&pThis->StatTransmit, a);
204
205	AssertPtr(pSgBuf);
206	Assert((pSgBuf->fFlags & PDMSCATTERGATHER_FLAGS_MAGIC_MASK) == PDMSCATTERGATHER_FLAGS_MAGIC);
207	Assert(RTCritSectIsOwner(&pThis->XmitLock));
208
209	/* Set an FTM checkpoint as this operation changes the state permanently. */
210	PDMDrvHlpFTSetCheckpoint(pThis->pDrvIns, FTMCHECKPOINTTYPE_NETWORK);
211
212	int rc;
213	if (!pSgBuf->pvUser)
214	{
215	#ifdef LOG_ENABLED
216	uint64_t u64Now = RTTimeProgramNanoTS();
217	LogFlow(("drvVDESend: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
218	pSgBuf->cbUsed, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
219	pThis->u64LastTransferTS = u64Now;
220	#endif
221	Log2(("drvVDESend: pSgBuf->aSegs[0].pvSeg=%p pSgBuf->cbUsed=%#x\n"
222	"%.*Rhxd\n",
223	pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, pSgBuf->cbUsed, pSgBuf->aSegs[0].pvSeg));
224
225	ssize_t cbSent;
226	cbSent = vde_send(pThis->pVdeConn, pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, 0);
227	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
228	}
229	else
230	{
231	uint8_t abHdrScratch[256];
232	uint8_t const pbFrame = (uint8_t const )pSgBuf->aSegs[0].pvSeg;
233	PCPDMNETWORKGSO pGso = (PCPDMNETWORKGSO)pSgBuf->pvUser;
234	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso, pSgBuf->cbUsed); Assert(cSegs > 1);
235	rc = 0;
236	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
237	{
238	uint32_t cbSegFrame;
239	void pvSegFrame = PDMNetGsoCarveSegmentQD(pGso, (uint8_t )pbFrame, pSgBuf->cbUsed, abHdrScratch,
240	iSeg, cSegs, &cbSegFrame);
241	ssize_t cbSent;
242	cbSent = vde_send(pThis->pVdeConn, pvSegFrame, cbSegFrame, 0);
243	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
244	if (RT_FAILURE(rc))
245	break;
246	}
247	}
248
249	pSgBuf->fFlags = 0;
250	RTMemFree(pSgBuf);
251
252	STAM_PROFILE_STOP(&pThis->StatTransmit, a);
253	AssertRC(rc);
254	if (RT_FAILURE(rc))
255	rc = rc == VERR_NO_MEMORY ? VERR_NET_NO_BUFFER_SPACE : VERR_NET_DOWN;
256	return rc;
257	}
258
259
260	/**
261	* @interface_method_impl{PDMINETWORKUP,pfnEndXmit}
262	*/
263	static DECLCALLBACK(void) drvVDENetworkUp_EndXmit(PPDMINETWORKUP pInterface)
264	{
265	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
266	RTCritSectLeave(&pThis->XmitLock);
267	}
268
269
270	/**
271	* @interface_method_impl{PDMINETWORKUP,pfnSetPromiscuousMode}
272	*/
273	static DECLCALLBACK(void) drvVDENetworkUp_SetPromiscuousMode(PPDMINETWORKUP pInterface, bool fPromiscuous)
274	{
275	LogFlow(("drvVDESetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
276	/* nothing to do */
277	}
278
279
280	/**
281	* Notification on link status changes.
282	*
283	* @param pInterface Pointer to the interface structure containing the called function pointer.
284	* @param enmLinkState The new link state.
285	* @thread EMT
286	*/
287	static DECLCALLBACK(void) drvVDENetworkUp_NotifyLinkChanged(PPDMINETWORKUP pInterface, PDMNETWORKLINKSTATE enmLinkState)
288	{
289	LogFlow(("drvNATNetworkUp_NotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
290	/** @todo take action on link down and up. Stop the polling and such like. */
291	}
292
293
294	/**
295	* Asynchronous I/O thread for handling receive.
296	*
297	* @returns VINF_SUCCESS (ignored).
298	* @param Thread Thread handle.
299	* @param pvUser Pointer to a DRVVDE structure.
300	*/
301	static DECLCALLBACK(int) drvVDEAsyncIoThread(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
302	{
303	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
304	LogFlow(("drvVDEAsyncIoThread: pThis=%p\n", pThis));
305
306	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
307	return VINF_SUCCESS;
308
309	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
310
311	/*
312	* Polling loop.
313	*/
314	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
315	{
316	/*
317	* Wait for something to become available.
318	*/
319	struct pollfd aFDs[2];
320	aFDs[0].fd = vde_datafd(pThis->pVdeConn);
321	aFDs[0].events = POLLIN \| POLLPRI;
322	aFDs[0].revents = 0;
323	aFDs[1].fd = RTPipeToNative(pThis->hPipeRead);
324	aFDs[1].events = POLLIN \| POLLPRI \| POLLERR \| POLLHUP;
325	aFDs[1].revents = 0;
326	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
327	errno=0;
328	int rc = poll(&aFDs[0], RT_ELEMENTS(aFDs), -1 /* infinite */);
329
330	/* this might have changed in the meantime */
331	if (pThread->enmState != PDMTHREADSTATE_RUNNING)
332	break;
333
334	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
335	if ( rc > 0
336	&& (aFDs[0].revents & (POLLIN \| POLLPRI))
337	&& !aFDs[1].revents)
338	{
339	/*
340	* Read the frame.
341	*/
342	char achBuf[16384];
343	ssize_t cbRead = 0;
344	cbRead = vde_recv(pThis->pVdeConn, achBuf, sizeof(achBuf), 0);
345	rc = cbRead < 0 ? RTErrConvertFromErrno(-cbRead) : VINF_SUCCESS;
346	if (RT_SUCCESS(rc))
347	{
348	/*
349	* Wait for the device to have space for this frame.
350	* Most guests use frame-sized receive buffers, hence non-zero cbMax
351	* automatically means there is enough room for entire frame. Some
352	* guests (eg. Solaris) use large chains of small receive buffers
353	* (each 128 or so bytes large). We will still start receiving as soon
354	* as cbMax is non-zero because:
355	* - it would be quite expensive for pfnCanReceive to accurately
356	* determine free receive buffer space
357	* - if we were waiting for enough free buffers, there is a risk
358	* of deadlocking because the guest could be waiting for a receive
359	* overflow error to allocate more receive buffers
360	*/
361	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
362	int rc1 = pThis->pIAboveNet->pfnWaitReceiveAvail(pThis->pIAboveNet, RT_INDEFINITE_WAIT);
363	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
364
365	/*
366	* A return code != VINF_SUCCESS means that we were woken up during a VM
367	* state transition. Drop the packet and wait for the next one.
368	*/
369	if (RT_FAILURE(rc1))
370	continue;
371
372	/*
373	* Pass the data up.
374	*/
375	#ifdef LOG_ENABLED
376	uint64_t u64Now = RTTimeProgramNanoTS();
377	LogFlow(("drvVDEAsyncIoThread: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
378	cbRead, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
379	pThis->u64LastReceiveTS = u64Now;
380	#endif
381	Log2(("drvVDEAsyncIoThread: cbRead=%#x\n" "%.*Rhxd\n", cbRead, cbRead, achBuf));
382	STAM_COUNTER_INC(&pThis->StatPktRecv);
383	STAM_COUNTER_ADD(&pThis->StatPktRecvBytes, cbRead);
384	rc1 = pThis->pIAboveNet->pfnReceive(pThis->pIAboveNet, achBuf, cbRead);
385	AssertRC(rc1);
386	}
387	else
388	{
389	LogFlow(("drvVDEAsyncIoThread: RTFileRead -> %Rrc\n", rc));
390	if (rc == VERR_INVALID_HANDLE)
391	break;
392	RTThreadYield();
393	}
394	}
395	else if ( rc > 0
396	&& aFDs[1].revents)
397	{
398	LogFlow(("drvVDEAsyncIoThread: Control message: enmState=%d revents=%#x\n", pThread->enmState, aFDs[1].revents));
399	if (aFDs[1].revents & (POLLHUP \| POLLERR \| POLLNVAL))
400	break;
401
402	/* drain the pipe */
403	char ch;
404	size_t cbRead;
405	RTPipeRead(pThis->hPipeRead, &ch, 1, &cbRead);
406	}
407	else
408	{
409	/*
410	* poll() failed for some reason. Yield to avoid eating too much CPU.
411	*
412	* EINTR errors have been seen frequently. They should be harmless, even
413	* if they are not supposed to occur in our setup.
414	*/
415	if (errno == EINTR)
416	Log(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
417	else
418	AssertMsgFailed(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
419	RTThreadYield();
420	}
421	}
422
423
424	LogFlow(("drvVDEAsyncIoThread: returns %Rrc\n", VINF_SUCCESS));
425	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
426	return VINF_SUCCESS;
427	}
428
429
430	/**
431	* Unblock the send thread so it can respond to a state change.
432	*
433	* @returns VBox status code.
434	* @param pDevIns The pcnet device instance.
435	* @param pThread The send thread.
436	*/
437	static DECLCALLBACK(int) drvVDEAsyncIoWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
438	{
439	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
440
441	size_t cbIgnored;
442	int rc = RTPipeWrite(pThis->hPipeWrite, "", 1, &cbIgnored);
443	AssertRC(rc);
444
445	return VINF_SUCCESS;
446	}
447
448
449	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
450
451	/**
452	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
453	*/
454	static DECLCALLBACK(void ) drvVDEQueryInterface(PPDMIBASE pInterface, const char pszIID)
455	{
456	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
457	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
458
459	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
460	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKUP, &pThis->INetworkUp);
461	return NULL;
462	}
463
464	/* -=-=-=-=- PDMDRVREG -=-=-=-=- */
465
466	/**
467	* Destruct a driver instance.
468	*
469	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
470	* resources can be freed correctly.
471	*
472	* @param pDrvIns The driver instance data.
473	*/
474	static DECLCALLBACK(void) drvVDEDestruct(PPDMDRVINS pDrvIns)
475	{
476	LogFlow(("drvVDEDestruct\n"));
477	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
478	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
479
480	/*
481	* Terminate the control pipe.
482	*/
483	if (pThis->hPipeWrite != NIL_RTPIPE)
484	{
485	RTPipeClose(pThis->hPipeWrite);
486	pThis->hPipeWrite = NIL_RTPIPE;
487	}
488	if (pThis->hPipeRead != NIL_RTPIPE)
489	{
490	RTPipeClose(pThis->hPipeRead);
491	pThis->hPipeRead = NIL_RTPIPE;
492	}
493
494	MMR3HeapFree(pThis->pszDeviceName);
495	pThis->pszDeviceName = NULL;
496
497	/*
498	* Kill the xmit lock.
499	*/
500	if (RTCritSectIsInitialized(&pThis->XmitLock))
501	RTCritSectDelete(&pThis->XmitLock);
502
503	if (pThis->pVdeConn)
504	{
505	vde_close(pThis->pVdeConn);
506	pThis->pVdeConn = NULL;
507	}
508
509	#ifdef VBOX_WITH_STATISTICS
510	/*
511	* Deregister statistics.
512	*/
513	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSent);
514	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSentBytes);
515	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecv);
516	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecvBytes);
517	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatTransmit);
518	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatReceive);
519	#endif /* VBOX_WITH_STATISTICS */
520	}
521
522
523	/**
524	* Construct a VDE network transport driver instance.
525	*
526	* @copydoc FNPDMDRVCONSTRUCT
527	*/
528	static DECLCALLBACK(int) drvVDEConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
529	{
530	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
531	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
532
533	/*
534	* Init the static parts.
535	*/
536	pThis->pDrvIns = pDrvIns;
537	pThis->pszDeviceName = NULL;
538	pThis->hPipeRead = NIL_RTPIPE;
539	pThis->hPipeWrite = NIL_RTPIPE;
540
541	/* IBase */
542	pDrvIns->IBase.pfnQueryInterface = drvVDEQueryInterface;
543	/* INetwork */
544	pThis->INetworkUp.pfnBeginXmit = drvVDENetworkUp_BeginXmit;
545	pThis->INetworkUp.pfnAllocBuf = drvVDENetworkUp_AllocBuf;
546	pThis->INetworkUp.pfnFreeBuf = drvVDENetworkUp_FreeBuf;
547	pThis->INetworkUp.pfnSendBuf = drvVDENetworkUp_SendBuf;
548	pThis->INetworkUp.pfnEndXmit = drvVDENetworkUp_EndXmit;
549	pThis->INetworkUp.pfnSetPromiscuousMode = drvVDENetworkUp_SetPromiscuousMode;
550	pThis->INetworkUp.pfnNotifyLinkChanged = drvVDENetworkUp_NotifyLinkChanged;
551
552	#ifdef VBOX_WITH_STATISTICS
553	/*
554	* Statistics.
555	*/
556	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSent, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of sent packets.", "/Drivers/VDE%d/Packets/Sent", pDrvIns->iInstance);
557	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSentBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent bytes.", "/Drivers/VDE%d/Bytes/Sent", pDrvIns->iInstance);
558	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecv, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of received packets.", "/Drivers/VDE%d/Packets/Received", pDrvIns->iInstance);
559	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecvBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of received bytes.", "/Drivers/VDE%d/Bytes/Received", pDrvIns->iInstance);
560	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet transmit runs.", "/Drivers/VDE%d/Transmit", pDrvIns->iInstance);
561	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet receive runs.", "/Drivers/VDE%d/Receive", pDrvIns->iInstance);
562	#endif /* VBOX_WITH_STATISTICS */
563
564	/*
565	* Validate the config.
566	*/
567	if (!CFGMR3AreValuesValid(pCfg, "network"))
568	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, "");
569
570	/*
571	* Check that no-one is attached to us.
572	*/
573	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
574	("Configuration error: Not possible to attach anything to this driver!\n"),
575	VERR_PDM_DRVINS_NO_ATTACH);
576
577	/*
578	* Query the network port interface.
579	*/
580	pThis->pIAboveNet = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMINETWORKDOWN);
581	if (!pThis->pIAboveNet)
582	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
583	N_("Configuration error: The above device/driver didn't export the network port interface"));
584
585	/*
586	* Read the configuration.
587	*/
588	int rc;
589	char szNetwork[RTPATH_MAX];
590	rc = CFGMR3QueryString(pCfg, "network", szNetwork, sizeof(szNetwork));
591	if (RT_FAILURE(rc))
592	*szNetwork=0;
593
594	if (RT_FAILURE(DrvVDELoadVDEPlug()))
595	return PDMDrvHlpVMSetError(pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
596	N_("VDEplug library: not found"));
597	pThis->pVdeConn = vde_open(szNetwork, "VirtualBOX", NULL);
598	if (pThis->pVdeConn == NULL)
599	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
600	N_("Failed to connect to the VDE SWITCH"));
601
602	/*
603	* Create the transmit lock.
604	*/
605	rc = RTCritSectInit(&pThis->XmitLock);
606	AssertRCReturn(rc, rc);
607
608	/*
609	* Create the control pipe.
610	*/
611	rc = RTPipeCreate(&pThis->hPipeRead, &pThis->hPipeWrite, 0 /fFlags/);
612	AssertRCReturn(rc, rc);
613
614	/*
615	* Create the async I/O thread.
616	*/
617	rc = PDMDrvHlpThreadCreate(pDrvIns, &pThis->pThread, pThis, drvVDEAsyncIoThread, drvVDEAsyncIoWakeup, 128 * _1K, RTTHREADTYPE_IO, "VDE");
618	AssertRCReturn(rc, rc);
619
620	return rc;
621	}
622
623
624	/**
625	* VDE network transport driver registration record.
626	*/
627	const PDMDRVREG g_DrvVDE =
628	{
629	/* u32Version */
630	PDM_DRVREG_VERSION,
631	/* szName */
632	"VDE",
633	/* szRCMod */
634	"",
635	/* szR0Mod */
636	"",
637	/* pszDescription */
638	"VDE Network Transport Driver",
639	/* fFlags */
640	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
641	/* fClass. */
642	PDM_DRVREG_CLASS_NETWORK,
643	/* cMaxInstances */
644	~0U,
645	/* cbInstance */
646	sizeof(DRVVDE),
647	/* pfnConstruct */
648	drvVDEConstruct,
649	/* pfnDestruct */
650	drvVDEDestruct,
651	/* pfnRelocate */
652	NULL,
653	/* pfnIOCtl */
654	NULL,
655	/* pfnPowerOn */
656	NULL,
657	/* pfnReset */
658	NULL,
659	/* pfnSuspend */
660	NULL, /** @todo Do power on, suspend and resume handlers! */
661	/* pfnResume */
662	NULL,
663	/* pfnAttach */
664	NULL,
665	/* pfnDetach */
666	NULL,
667	/* pfnPowerOff */
668	NULL,
669	/* pfnSoftReset */
670	NULL,
671	/* u32EndVersion */
672	PDM_DRVREG_VERSION
673	};
674

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source: vbox/trunk/src/VBox/Devices/Network/DrvVDE.cpp@ 49435

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