DrvVDE.cpp@ 61541

Last change on this file since 61541 was 57358, checked in by vboxsync, 9 years ago
*: scm cleanup run.
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1	/* $Id: DrvVDE.cpp 57358 2015-08-14 15:16:38Z vboxsync $ */
2	/** @file
3	* VDE network transport driver.
4	*/
5
6	/*
7	* Contributed by Renzo Davoli. VirtualSquare. University of Bologna, 2010
8	* Copyright (C) 2006-2015 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	/*********************************************************************************************************************************
21	* Header Files *
22	*********************************************************************************************************************************/
23	#define LOG_GROUP LOG_GROUP_DRV_TUN
24	#include <VBox/log.h>
25	#include <VBox/vmm/pdmdrv.h>
26	#include <VBox/vmm/pdmnetifs.h>
27	#include <VBox/vmm/pdmnetinline.h>
28	#include <VBox/VDEPlug.h>
29
30	#include <iprt/asm.h>
31	#include <iprt/assert.h>
32	#include <iprt/ctype.h>
33	#include <iprt/file.h>
34	#include <iprt/mem.h>
35	#include <iprt/param.h>
36	#include <iprt/path.h>
37	#include <iprt/pipe.h>
38	#include <iprt/semaphore.h>
39	#include <iprt/string.h>
40	#include <iprt/thread.h>
41	#include <iprt/uuid.h>
42
43	#include <sys/ioctl.h>
44	#include <sys/poll.h>
45	#include <sys/fcntl.h>
46	#include <errno.h>
47	#include <unistd.h>
48
49	#include "VBoxDD.h"
50
51
52	/*********************************************************************************************************************************
53	* Structures and Typedefs *
54	*********************************************************************************************************************************/
55	/**
56	* VDE driver instance data.
57	*
58	* @implements PDMINETWORKUP
59	*/
60	typedef struct DRVVDE
61	{
62	/** The network interface. */
63	PDMINETWORKUP INetworkUp;
64	/** The network interface. */
65	PPDMINETWORKDOWN pIAboveNet;
66	/** Pointer to the driver instance. */
67	PPDMDRVINS pDrvIns;
68	/** The configured VDE device name. */
69	char *pszDeviceName;
70	/** The write end of the control pipe. */
71	RTPIPE hPipeWrite;
72	/** The read end of the control pipe. */
73	RTPIPE hPipeRead;
74	/** Reader thread. */
75	PPDMTHREAD pThread;
76	/** The connection to the VDE switch */
77	VDECONN *pVdeConn;
78
79	/** @todo The transmit thread. */
80	/** Transmit lock used by drvTAPNetworkUp_BeginXmit. */
81	RTCRITSECT XmitLock;
82
83	#ifdef VBOX_WITH_STATISTICS
84	/** Number of sent packets. */
85	STAMCOUNTER StatPktSent;
86	/** Number of sent bytes. */
87	STAMCOUNTER StatPktSentBytes;
88	/** Number of received packets. */
89	STAMCOUNTER StatPktRecv;
90	/** Number of received bytes. */
91	STAMCOUNTER StatPktRecvBytes;
92	/** Profiling packet transmit runs. */
93	STAMPROFILE StatTransmit;
94	/** Profiling packet receive runs. */
95	STAMPROFILEADV StatReceive;
96	#endif /* VBOX_WITH_STATISTICS */
97
98	#ifdef LOG_ENABLED
99	/** The nano ts of the last transfer. */
100	uint64_t u64LastTransferTS;
101	/** The nano ts of the last receive. */
102	uint64_t u64LastReceiveTS;
103	#endif
104	} DRVVDE, *PDRVVDE;
105
106
107	/** Converts a pointer to VDE::INetworkUp to a PRDVVDE. */
108	#define PDMINETWORKUP_2_DRVVDE(pInterface) ( (PDRVVDE)((uintptr_t)pInterface - RT_OFFSETOF(DRVVDE, INetworkUp)) )
109
110
111	/*********************************************************************************************************************************
112	* Internal Functions *
113	*********************************************************************************************************************************/
114
115
116
117	/**
118	* @interface_method_impl{PDMINETWORKUP,pfnBeginXmit}
119	*/
120	static DECLCALLBACK(int) drvVDENetworkUp_BeginXmit(PPDMINETWORKUP pInterface, bool fOnWorkerThread)
121	{
122	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
123	int rc = RTCritSectTryEnter(&pThis->XmitLock);
124	if (RT_FAILURE(rc))
125	{
126	/** @todo XMIT thread */
127	rc = VERR_TRY_AGAIN;
128	}
129	return rc;
130	}
131
132
133	/**
134	* @interface_method_impl{PDMINETWORKUP,pfnAllocBuf}
135	*/
136	static DECLCALLBACK(int) drvVDENetworkUp_AllocBuf(PPDMINETWORKUP pInterface, size_t cbMin,
137	PCPDMNETWORKGSO pGso, PPPDMSCATTERGATHER ppSgBuf)
138	{
139	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
140	Assert(RTCritSectIsOwner(&pThis->XmitLock));
141
142	/*
143	* Allocate a scatter / gather buffer descriptor that is immediately
144	* followed by the buffer space of its single segment. The GSO context
145	* comes after that again.
146	*/
147	PPDMSCATTERGATHER pSgBuf = (PPDMSCATTERGATHER)RTMemAlloc( RT_ALIGN_Z(sizeof(*pSgBuf), 16)
148	+ RT_ALIGN_Z(cbMin, 16)
149	+ (pGso ? RT_ALIGN_Z(sizeof(*pGso), 16) : 0));
150	if (!pSgBuf)
151	return VERR_NO_MEMORY;
152
153	/*
154	* Initialize the S/G buffer and return.
155	*/
156	pSgBuf->fFlags = PDMSCATTERGATHER_FLAGS_MAGIC \| PDMSCATTERGATHER_FLAGS_OWNER_1;
157	pSgBuf->cbUsed = 0;
158	pSgBuf->cbAvailable = RT_ALIGN_Z(cbMin, 16);
159	pSgBuf->pvAllocator = NULL;
160	if (!pGso)
161	pSgBuf->pvUser = NULL;
162	else
163	{
164	pSgBuf->pvUser = (uint8_t *)(pSgBuf + 1) + pSgBuf->cbAvailable;
165	(PPDMNETWORKGSO)pSgBuf->pvUser = pGso;
166	}
167	pSgBuf->cSegs = 1;
168	pSgBuf->aSegs[0].cbSeg = pSgBuf->cbAvailable;
169	pSgBuf->aSegs[0].pvSeg = pSgBuf + 1;
170
171	#if 0 /* poison */
172	memset(pSgBuf->aSegs[0].pvSeg, 'F', pSgBuf->aSegs[0].cbSeg);
173	#endif
174	*ppSgBuf = pSgBuf;
175	return VINF_SUCCESS;
176	}
177
178
179	/**
180	* @interface_method_impl{PDMINETWORKUP,pfnFreeBuf}
181	*/
182	static DECLCALLBACK(int) drvVDENetworkUp_FreeBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf)
183	{
184	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
185	Assert(RTCritSectIsOwner(&pThis->XmitLock));
186	if (pSgBuf)
187	{
188	Assert((pSgBuf->fFlags & PDMSCATTERGATHER_FLAGS_MAGIC_MASK) == PDMSCATTERGATHER_FLAGS_MAGIC);
189	pSgBuf->fFlags = 0;
190	RTMemFree(pSgBuf);
191	}
192	return VINF_SUCCESS;
193	}
194
195
196	/**
197	* @interface_method_impl{PDMINETWORKUP,pfnSendBuf}
198	*/
199	static DECLCALLBACK(int) drvVDENetworkUp_SendBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread)
200	{
201	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
202	STAM_COUNTER_INC(&pThis->StatPktSent);
203	STAM_COUNTER_ADD(&pThis->StatPktSentBytes, pSgBuf->cbUsed);
204	STAM_PROFILE_START(&pThis->StatTransmit, a);
205
206	AssertPtr(pSgBuf);
207	Assert((pSgBuf->fFlags & PDMSCATTERGATHER_FLAGS_MAGIC_MASK) == PDMSCATTERGATHER_FLAGS_MAGIC);
208	Assert(RTCritSectIsOwner(&pThis->XmitLock));
209
210	/* Set an FTM checkpoint as this operation changes the state permanently. */
211	PDMDrvHlpFTSetCheckpoint(pThis->pDrvIns, FTMCHECKPOINTTYPE_NETWORK);
212
213	int rc;
214	if (!pSgBuf->pvUser)
215	{
216	#ifdef LOG_ENABLED
217	uint64_t u64Now = RTTimeProgramNanoTS();
218	LogFlow(("drvVDESend: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
219	pSgBuf->cbUsed, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
220	pThis->u64LastTransferTS = u64Now;
221	#endif
222	Log2(("drvVDESend: pSgBuf->aSegs[0].pvSeg=%p pSgBuf->cbUsed=%#x\n"
223	"%.*Rhxd\n",
224	pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, pSgBuf->cbUsed, pSgBuf->aSegs[0].pvSeg));
225
226	ssize_t cbSent;
227	cbSent = vde_send(pThis->pVdeConn, pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, 0);
228	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
229	}
230	else
231	{
232	uint8_t abHdrScratch[256];
233	uint8_t const pbFrame = (uint8_t const )pSgBuf->aSegs[0].pvSeg;
234	PCPDMNETWORKGSO pGso = (PCPDMNETWORKGSO)pSgBuf->pvUser;
235	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso, pSgBuf->cbUsed); Assert(cSegs > 1);
236	rc = 0;
237	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
238	{
239	uint32_t cbSegFrame;
240	void pvSegFrame = PDMNetGsoCarveSegmentQD(pGso, (uint8_t )pbFrame, pSgBuf->cbUsed, abHdrScratch,
241	iSeg, cSegs, &cbSegFrame);
242	ssize_t cbSent;
243	cbSent = vde_send(pThis->pVdeConn, pvSegFrame, cbSegFrame, 0);
244	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
245	if (RT_FAILURE(rc))
246	break;
247	}
248	}
249
250	pSgBuf->fFlags = 0;
251	RTMemFree(pSgBuf);
252
253	STAM_PROFILE_STOP(&pThis->StatTransmit, a);
254	AssertRC(rc);
255	if (RT_FAILURE(rc))
256	rc = rc == VERR_NO_MEMORY ? VERR_NET_NO_BUFFER_SPACE : VERR_NET_DOWN;
257	return rc;
258	}
259
260
261	/**
262	* @interface_method_impl{PDMINETWORKUP,pfnEndXmit}
263	*/
264	static DECLCALLBACK(void) drvVDENetworkUp_EndXmit(PPDMINETWORKUP pInterface)
265	{
266	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
267	RTCritSectLeave(&pThis->XmitLock);
268	}
269
270
271	/**
272	* @interface_method_impl{PDMINETWORKUP,pfnSetPromiscuousMode}
273	*/
274	static DECLCALLBACK(void) drvVDENetworkUp_SetPromiscuousMode(PPDMINETWORKUP pInterface, bool fPromiscuous)
275	{
276	LogFlow(("drvVDESetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
277	/* nothing to do */
278	}
279
280
281	/**
282	* Notification on link status changes.
283	*
284	* @param pInterface Pointer to the interface structure containing the called function pointer.
285	* @param enmLinkState The new link state.
286	* @thread EMT
287	*/
288	static DECLCALLBACK(void) drvVDENetworkUp_NotifyLinkChanged(PPDMINETWORKUP pInterface, PDMNETWORKLINKSTATE enmLinkState)
289	{
290	LogFlow(("drvNATNetworkUp_NotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
291	/** @todo take action on link down and up. Stop the polling and such like. */
292	}
293
294
295	/**
296	* Asynchronous I/O thread for handling receive.
297	*
298	* @returns VINF_SUCCESS (ignored).
299	* @param Thread Thread handle.
300	* @param pvUser Pointer to a DRVVDE structure.
301	*/
302	static DECLCALLBACK(int) drvVDEAsyncIoThread(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
303	{
304	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
305	LogFlow(("drvVDEAsyncIoThread: pThis=%p\n", pThis));
306
307	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
308	return VINF_SUCCESS;
309
310	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
311
312	/*
313	* Polling loop.
314	*/
315	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
316	{
317	/*
318	* Wait for something to become available.
319	*/
320	struct pollfd aFDs[2];
321	aFDs[0].fd = vde_datafd(pThis->pVdeConn);
322	aFDs[0].events = POLLIN \| POLLPRI;
323	aFDs[0].revents = 0;
324	aFDs[1].fd = RTPipeToNative(pThis->hPipeRead);
325	aFDs[1].events = POLLIN \| POLLPRI \| POLLERR \| POLLHUP;
326	aFDs[1].revents = 0;
327	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
328	errno=0;
329	int rc = poll(&aFDs[0], RT_ELEMENTS(aFDs), -1 /* infinite */);
330
331	/* this might have changed in the meantime */
332	if (pThread->enmState != PDMTHREADSTATE_RUNNING)
333	break;
334
335	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
336	if ( rc > 0
337	&& (aFDs[0].revents & (POLLIN \| POLLPRI))
338	&& !aFDs[1].revents)
339	{
340	/*
341	* Read the frame.
342	*/
343	char achBuf[16384];
344	ssize_t cbRead = 0;
345	cbRead = vde_recv(pThis->pVdeConn, achBuf, sizeof(achBuf), 0);
346	rc = cbRead < 0 ? RTErrConvertFromErrno(-cbRead) : VINF_SUCCESS;
347	if (RT_SUCCESS(rc))
348	{
349	/*
350	* Wait for the device to have space for this frame.
351	* Most guests use frame-sized receive buffers, hence non-zero cbMax
352	* automatically means there is enough room for entire frame. Some
353	* guests (eg. Solaris) use large chains of small receive buffers
354	* (each 128 or so bytes large). We will still start receiving as soon
355	* as cbMax is non-zero because:
356	* - it would be quite expensive for pfnCanReceive to accurately
357	* determine free receive buffer space
358	* - if we were waiting for enough free buffers, there is a risk
359	* of deadlocking because the guest could be waiting for a receive
360	* overflow error to allocate more receive buffers
361	*/
362	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
363	int rc1 = pThis->pIAboveNet->pfnWaitReceiveAvail(pThis->pIAboveNet, RT_INDEFINITE_WAIT);
364	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
365
366	/*
367	* A return code != VINF_SUCCESS means that we were woken up during a VM
368	* state transition. Drop the packet and wait for the next one.
369	*/
370	if (RT_FAILURE(rc1))
371	continue;
372
373	/*
374	* Pass the data up.
375	*/
376	#ifdef LOG_ENABLED
377	uint64_t u64Now = RTTimeProgramNanoTS();
378	LogFlow(("drvVDEAsyncIoThread: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
379	cbRead, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
380	pThis->u64LastReceiveTS = u64Now;
381	#endif
382	Log2(("drvVDEAsyncIoThread: cbRead=%#x\n" "%.*Rhxd\n", cbRead, cbRead, achBuf));
383	STAM_COUNTER_INC(&pThis->StatPktRecv);
384	STAM_COUNTER_ADD(&pThis->StatPktRecvBytes, cbRead);
385	rc1 = pThis->pIAboveNet->pfnReceive(pThis->pIAboveNet, achBuf, cbRead);
386	AssertRC(rc1);
387	}
388	else
389	{
390	LogFlow(("drvVDEAsyncIoThread: RTFileRead -> %Rrc\n", rc));
391	if (rc == VERR_INVALID_HANDLE)
392	break;
393	RTThreadYield();
394	}
395	}
396	else if ( rc > 0
397	&& aFDs[1].revents)
398	{
399	LogFlow(("drvVDEAsyncIoThread: Control message: enmState=%d revents=%#x\n", pThread->enmState, aFDs[1].revents));
400	if (aFDs[1].revents & (POLLHUP \| POLLERR \| POLLNVAL))
401	break;
402
403	/* drain the pipe */
404	char ch;
405	size_t cbRead;
406	RTPipeRead(pThis->hPipeRead, &ch, 1, &cbRead);
407	}
408	else
409	{
410	/*
411	* poll() failed for some reason. Yield to avoid eating too much CPU.
412	*
413	* EINTR errors have been seen frequently. They should be harmless, even
414	* if they are not supposed to occur in our setup.
415	*/
416	if (errno == EINTR)
417	Log(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
418	else
419	AssertMsgFailed(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
420	RTThreadYield();
421	}
422	}
423
424
425	LogFlow(("drvVDEAsyncIoThread: returns %Rrc\n", VINF_SUCCESS));
426	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
427	return VINF_SUCCESS;
428	}
429
430
431	/**
432	* Unblock the send thread so it can respond to a state change.
433	*
434	* @returns VBox status code.
435	* @param pDevIns The pcnet device instance.
436	* @param pThread The send thread.
437	*/
438	static DECLCALLBACK(int) drvVDEAsyncIoWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
439	{
440	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
441
442	size_t cbIgnored;
443	int rc = RTPipeWrite(pThis->hPipeWrite, "", 1, &cbIgnored);
444	AssertRC(rc);
445
446	return VINF_SUCCESS;
447	}
448
449
450	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
451
452	/**
453	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
454	*/
455	static DECLCALLBACK(void ) drvVDEQueryInterface(PPDMIBASE pInterface, const char pszIID)
456	{
457	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
458	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
459
460	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
461	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKUP, &pThis->INetworkUp);
462	return NULL;
463	}
464
465	/* -=-=-=-=- PDMDRVREG -=-=-=-=- */
466
467	/**
468	* Destruct a driver instance.
469	*
470	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
471	* resources can be freed correctly.
472	*
473	* @param pDrvIns The driver instance data.
474	*/
475	static DECLCALLBACK(void) drvVDEDestruct(PPDMDRVINS pDrvIns)
476	{
477	LogFlow(("drvVDEDestruct\n"));
478	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
479	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
480
481	/*
482	* Terminate the control pipe.
483	*/
484	if (pThis->hPipeWrite != NIL_RTPIPE)
485	{
486	RTPipeClose(pThis->hPipeWrite);
487	pThis->hPipeWrite = NIL_RTPIPE;
488	}
489	if (pThis->hPipeRead != NIL_RTPIPE)
490	{
491	RTPipeClose(pThis->hPipeRead);
492	pThis->hPipeRead = NIL_RTPIPE;
493	}
494
495	MMR3HeapFree(pThis->pszDeviceName);
496	pThis->pszDeviceName = NULL;
497
498	/*
499	* Kill the xmit lock.
500	*/
501	if (RTCritSectIsInitialized(&pThis->XmitLock))
502	RTCritSectDelete(&pThis->XmitLock);
503
504	if (pThis->pVdeConn)
505	{
506	vde_close(pThis->pVdeConn);
507	pThis->pVdeConn = NULL;
508	}
509
510	#ifdef VBOX_WITH_STATISTICS
511	/*
512	* Deregister statistics.
513	*/
514	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSent);
515	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSentBytes);
516	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecv);
517	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecvBytes);
518	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatTransmit);
519	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatReceive);
520	#endif /* VBOX_WITH_STATISTICS */
521	}
522
523
524	/**
525	* Construct a VDE network transport driver instance.
526	*
527	* @copydoc FNPDMDRVCONSTRUCT
528	*/
529	static DECLCALLBACK(int) drvVDEConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
530	{
531	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
532	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
533
534	/*
535	* Init the static parts.
536	*/
537	pThis->pDrvIns = pDrvIns;
538	pThis->pszDeviceName = NULL;
539	pThis->hPipeRead = NIL_RTPIPE;
540	pThis->hPipeWrite = NIL_RTPIPE;
541
542	/* IBase */
543	pDrvIns->IBase.pfnQueryInterface = drvVDEQueryInterface;
544	/* INetwork */
545	pThis->INetworkUp.pfnBeginXmit = drvVDENetworkUp_BeginXmit;
546	pThis->INetworkUp.pfnAllocBuf = drvVDENetworkUp_AllocBuf;
547	pThis->INetworkUp.pfnFreeBuf = drvVDENetworkUp_FreeBuf;
548	pThis->INetworkUp.pfnSendBuf = drvVDENetworkUp_SendBuf;
549	pThis->INetworkUp.pfnEndXmit = drvVDENetworkUp_EndXmit;
550	pThis->INetworkUp.pfnSetPromiscuousMode = drvVDENetworkUp_SetPromiscuousMode;
551	pThis->INetworkUp.pfnNotifyLinkChanged = drvVDENetworkUp_NotifyLinkChanged;
552
553	#ifdef VBOX_WITH_STATISTICS
554	/*
555	* Statistics.
556	*/
557	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSent, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of sent packets.", "/Drivers/VDE%d/Packets/Sent", pDrvIns->iInstance);
558	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSentBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent bytes.", "/Drivers/VDE%d/Bytes/Sent", pDrvIns->iInstance);
559	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecv, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of received packets.", "/Drivers/VDE%d/Packets/Received", pDrvIns->iInstance);
560	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecvBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of received bytes.", "/Drivers/VDE%d/Bytes/Received", pDrvIns->iInstance);
561	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet transmit runs.", "/Drivers/VDE%d/Transmit", pDrvIns->iInstance);
562	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet receive runs.", "/Drivers/VDE%d/Receive", pDrvIns->iInstance);
563	#endif /* VBOX_WITH_STATISTICS */
564
565	/*
566	* Validate the config.
567	*/
568	if (!CFGMR3AreValuesValid(pCfg, "network"))
569	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, "");
570
571	/*
572	* Check that no-one is attached to us.
573	*/
574	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
575	("Configuration error: Not possible to attach anything to this driver!\n"),
576	VERR_PDM_DRVINS_NO_ATTACH);
577
578	/*
579	* Query the network port interface.
580	*/
581	pThis->pIAboveNet = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMINETWORKDOWN);
582	if (!pThis->pIAboveNet)
583	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
584	N_("Configuration error: The above device/driver didn't export the network port interface"));
585
586	/*
587	* Read the configuration.
588	*/
589	int rc;
590	char szNetwork[RTPATH_MAX];
591	rc = CFGMR3QueryString(pCfg, "network", szNetwork, sizeof(szNetwork));
592	if (RT_FAILURE(rc))
593	*szNetwork=0;
594
595	if (RT_FAILURE(DrvVDELoadVDEPlug()))
596	return PDMDrvHlpVMSetError(pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
597	N_("VDEplug library: not found"));
598	pThis->pVdeConn = vde_open(szNetwork, "VirtualBOX", NULL);
599	if (pThis->pVdeConn == NULL)
600	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
601	N_("Failed to connect to the VDE SWITCH"));
602
603	/*
604	* Create the transmit lock.
605	*/
606	rc = RTCritSectInit(&pThis->XmitLock);
607	AssertRCReturn(rc, rc);
608
609	/*
610	* Create the control pipe.
611	*/
612	rc = RTPipeCreate(&pThis->hPipeRead, &pThis->hPipeWrite, 0 /fFlags/);
613	AssertRCReturn(rc, rc);
614
615	/*
616	* Create the async I/O thread.
617	*/
618	rc = PDMDrvHlpThreadCreate(pDrvIns, &pThis->pThread, pThis, drvVDEAsyncIoThread, drvVDEAsyncIoWakeup, 128 * _1K, RTTHREADTYPE_IO, "VDE");
619	AssertRCReturn(rc, rc);
620
621	return rc;
622	}
623
624
625	/**
626	* VDE network transport driver registration record.
627	*/
628	const PDMDRVREG g_DrvVDE =
629	{
630	/* u32Version */
631	PDM_DRVREG_VERSION,
632	/* szName */
633	"VDE",
634	/* szRCMod */
635	"",
636	/* szR0Mod */
637	"",
638	/* pszDescription */
639	"VDE Network Transport Driver",
640	/* fFlags */
641	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
642	/* fClass. */
643	PDM_DRVREG_CLASS_NETWORK,
644	/* cMaxInstances */
645	~0U,
646	/* cbInstance */
647	sizeof(DRVVDE),
648	/* pfnConstruct */
649	drvVDEConstruct,
650	/* pfnDestruct */
651	drvVDEDestruct,
652	/* pfnRelocate */
653	NULL,
654	/* pfnIOCtl */
655	NULL,
656	/* pfnPowerOn */
657	NULL,
658	/* pfnReset */
659	NULL,
660	/* pfnSuspend */
661	NULL, /** @todo Do power on, suspend and resume handlers! */
662	/* pfnResume */
663	NULL,
664	/* pfnAttach */
665	NULL,
666	/* pfnDetach */
667	NULL,
668	/* pfnPowerOff */
669	NULL,
670	/* pfnSoftReset */
671	NULL,
672	/* u32EndVersion */
673	PDM_DRVREG_VERSION
674	};
675

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source: vbox/trunk/src/VBox/Devices/Network/DrvVDE.cpp@ 61541

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