DrvVDE.cpp@ 78229

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1	/* $Id: DrvVDE.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* VDE network transport driver.
4	*/
5
6	/*
7	* Contributed by Renzo Davoli. VirtualSquare. University of Bologna, 2010
8	*
9	* Copyright (C) 2006-2019 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*/
19
20
21	/*********************************************************************************************************************************
22	* Header Files *
23	*********************************************************************************************************************************/
24	#define LOG_GROUP LOG_GROUP_DRV_TUN
25	#include <VBox/log.h>
26	#include <VBox/vmm/pdmdrv.h>
27	#include <VBox/vmm/pdmnetifs.h>
28	#include <VBox/vmm/pdmnetinline.h>
29	#include <VBox/VDEPlug.h>
30
31	#include <iprt/asm.h>
32	#include <iprt/assert.h>
33	#include <iprt/ctype.h>
34	#include <iprt/file.h>
35	#include <iprt/mem.h>
36	#include <iprt/param.h>
37	#include <iprt/path.h>
38	#include <iprt/pipe.h>
39	#include <iprt/semaphore.h>
40	#include <iprt/string.h>
41	#include <iprt/thread.h>
42	#include <iprt/uuid.h>
43
44	#include <sys/ioctl.h>
45	#include <sys/poll.h>
46	#include <sys/fcntl.h>
47	#include <errno.h>
48	#include <unistd.h>
49
50	#include "VBoxDD.h"
51
52
53	/*********************************************************************************************************************************
54	* Structures and Typedefs *
55	*********************************************************************************************************************************/
56	/**
57	* VDE driver instance data.
58	*
59	* @implements PDMINETWORKUP
60	*/
61	typedef struct DRVVDE
62	{
63	/** The network interface. */
64	PDMINETWORKUP INetworkUp;
65	/** The network interface. */
66	PPDMINETWORKDOWN pIAboveNet;
67	/** Pointer to the driver instance. */
68	PPDMDRVINS pDrvIns;
69	/** The configured VDE device name. */
70	char *pszDeviceName;
71	/** The write end of the control pipe. */
72	RTPIPE hPipeWrite;
73	/** The read end of the control pipe. */
74	RTPIPE hPipeRead;
75	/** Reader thread. */
76	PPDMTHREAD pThread;
77	/** The connection to the VDE switch */
78	VDECONN *pVdeConn;
79
80	/** @todo The transmit thread. */
81	/** Transmit lock used by drvTAPNetworkUp_BeginXmit. */
82	RTCRITSECT XmitLock;
83
84	#ifdef VBOX_WITH_STATISTICS
85	/** Number of sent packets. */
86	STAMCOUNTER StatPktSent;
87	/** Number of sent bytes. */
88	STAMCOUNTER StatPktSentBytes;
89	/** Number of received packets. */
90	STAMCOUNTER StatPktRecv;
91	/** Number of received bytes. */
92	STAMCOUNTER StatPktRecvBytes;
93	/** Profiling packet transmit runs. */
94	STAMPROFILE StatTransmit;
95	/** Profiling packet receive runs. */
96	STAMPROFILEADV StatReceive;
97	#endif /* VBOX_WITH_STATISTICS */
98
99	#ifdef LOG_ENABLED
100	/** The nano ts of the last transfer. */
101	uint64_t u64LastTransferTS;
102	/** The nano ts of the last receive. */
103	uint64_t u64LastReceiveTS;
104	#endif
105	} DRVVDE, *PDRVVDE;
106
107
108	/** Converts a pointer to VDE::INetworkUp to a PRDVVDE. */
109	#define PDMINETWORKUP_2_DRVVDE(pInterface) ( (PDRVVDE)((uintptr_t)pInterface - RT_UOFFSETOF(DRVVDE, INetworkUp)) )
110
111
112	/*********************************************************************************************************************************
113	* Internal Functions *
114	*********************************************************************************************************************************/
115
116
117
118	/**
119	* @interface_method_impl{PDMINETWORKUP,pfnBeginXmit}
120	*/
121	static DECLCALLBACK(int) drvVDENetworkUp_BeginXmit(PPDMINETWORKUP pInterface, bool fOnWorkerThread)
122	{
123	RT_NOREF(fOnWorkerThread);
124	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
125	int rc = RTCritSectTryEnter(&pThis->XmitLock);
126	if (RT_FAILURE(rc))
127	{
128	/** @todo XMIT thread */
129	rc = VERR_TRY_AGAIN;
130	}
131	return rc;
132	}
133
134
135	/**
136	* @interface_method_impl{PDMINETWORKUP,pfnAllocBuf}
137	*/
138	static DECLCALLBACK(int) drvVDENetworkUp_AllocBuf(PPDMINETWORKUP pInterface, size_t cbMin,
139	PCPDMNETWORKGSO pGso, PPPDMSCATTERGATHER ppSgBuf)
140	{
141	RT_NOREF(pInterface);
142	#ifdef VBOX_STRICT
143	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
144	Assert(RTCritSectIsOwner(&pThis->XmitLock));
145	#endif
146
147	/*
148	* Allocate a scatter / gather buffer descriptor that is immediately
149	* followed by the buffer space of its single segment. The GSO context
150	* comes after that again.
151	*/
152	PPDMSCATTERGATHER pSgBuf = (PPDMSCATTERGATHER)RTMemAlloc( RT_ALIGN_Z(sizeof(*pSgBuf), 16)
153	+ RT_ALIGN_Z(cbMin, 16)
154	+ (pGso ? RT_ALIGN_Z(sizeof(*pGso), 16) : 0));
155	if (!pSgBuf)
156	return VERR_NO_MEMORY;
157
158	/*
159	* Initialize the S/G buffer and return.
160	*/
161	pSgBuf->fFlags = PDMSCATTERGATHER_FLAGS_MAGIC \| PDMSCATTERGATHER_FLAGS_OWNER_1;
162	pSgBuf->cbUsed = 0;
163	pSgBuf->cbAvailable = RT_ALIGN_Z(cbMin, 16);
164	pSgBuf->pvAllocator = NULL;
165	if (!pGso)
166	pSgBuf->pvUser = NULL;
167	else
168	{
169	pSgBuf->pvUser = (uint8_t *)(pSgBuf + 1) + pSgBuf->cbAvailable;
170	(PPDMNETWORKGSO)pSgBuf->pvUser = pGso;
171	}
172	pSgBuf->cSegs = 1;
173	pSgBuf->aSegs[0].cbSeg = pSgBuf->cbAvailable;
174	pSgBuf->aSegs[0].pvSeg = pSgBuf + 1;
175
176	#if 0 /* poison */
177	memset(pSgBuf->aSegs[0].pvSeg, 'F', pSgBuf->aSegs[0].cbSeg);
178	#endif
179	*ppSgBuf = pSgBuf;
180	return VINF_SUCCESS;
181	}
182
183
184	/**
185	* @interface_method_impl{PDMINETWORKUP,pfnFreeBuf}
186	*/
187	static DECLCALLBACK(int) drvVDENetworkUp_FreeBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf)
188	{
189	RT_NOREF(pInterface);
190	#ifdef VBOX_STRICT
191	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
192	Assert(RTCritSectIsOwner(&pThis->XmitLock));
193	#endif
194	if (pSgBuf)
195	{
196	Assert((pSgBuf->fFlags & PDMSCATTERGATHER_FLAGS_MAGIC_MASK) == PDMSCATTERGATHER_FLAGS_MAGIC);
197	pSgBuf->fFlags = 0;
198	RTMemFree(pSgBuf);
199	}
200	return VINF_SUCCESS;
201	}
202
203
204	/**
205	* @interface_method_impl{PDMINETWORKUP,pfnSendBuf}
206	*/
207	static DECLCALLBACK(int) drvVDENetworkUp_SendBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread)
208	{
209	RT_NOREF(fOnWorkerThread);
210	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
211	STAM_COUNTER_INC(&pThis->StatPktSent);
212	STAM_COUNTER_ADD(&pThis->StatPktSentBytes, pSgBuf->cbUsed);
213	STAM_PROFILE_START(&pThis->StatTransmit, a);
214
215	AssertPtr(pSgBuf);
216	Assert((pSgBuf->fFlags & PDMSCATTERGATHER_FLAGS_MAGIC_MASK) == PDMSCATTERGATHER_FLAGS_MAGIC);
217	Assert(RTCritSectIsOwner(&pThis->XmitLock));
218
219	/* Set an FTM checkpoint as this operation changes the state permanently. */
220	PDMDrvHlpFTSetCheckpoint(pThis->pDrvIns, FTMCHECKPOINTTYPE_NETWORK);
221
222	int rc;
223	if (!pSgBuf->pvUser)
224	{
225	#ifdef LOG_ENABLED
226	uint64_t u64Now = RTTimeProgramNanoTS();
227	LogFlow(("drvVDESend: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
228	pSgBuf->cbUsed, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
229	pThis->u64LastTransferTS = u64Now;
230	#endif
231	Log2(("drvVDESend: pSgBuf->aSegs[0].pvSeg=%p pSgBuf->cbUsed=%#x\n"
232	"%.*Rhxd\n",
233	pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, pSgBuf->cbUsed, pSgBuf->aSegs[0].pvSeg));
234
235	ssize_t cbSent;
236	cbSent = vde_send(pThis->pVdeConn, pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, 0);
237	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
238	}
239	else
240	{
241	uint8_t abHdrScratch[256];
242	uint8_t const pbFrame = (uint8_t const )pSgBuf->aSegs[0].pvSeg;
243	PCPDMNETWORKGSO pGso = (PCPDMNETWORKGSO)pSgBuf->pvUser;
244	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso, pSgBuf->cbUsed); Assert(cSegs > 1);
245	rc = 0;
246	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
247	{
248	uint32_t cbSegFrame;
249	void pvSegFrame = PDMNetGsoCarveSegmentQD(pGso, (uint8_t )pbFrame, pSgBuf->cbUsed, abHdrScratch,
250	iSeg, cSegs, &cbSegFrame);
251	ssize_t cbSent;
252	cbSent = vde_send(pThis->pVdeConn, pvSegFrame, cbSegFrame, 0);
253	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
254	if (RT_FAILURE(rc))
255	break;
256	}
257	}
258
259	pSgBuf->fFlags = 0;
260	RTMemFree(pSgBuf);
261
262	STAM_PROFILE_STOP(&pThis->StatTransmit, a);
263	AssertRC(rc);
264	if (RT_FAILURE(rc))
265	rc = rc == VERR_NO_MEMORY ? VERR_NET_NO_BUFFER_SPACE : VERR_NET_DOWN;
266	return rc;
267	}
268
269
270	/**
271	* @interface_method_impl{PDMINETWORKUP,pfnEndXmit}
272	*/
273	static DECLCALLBACK(void) drvVDENetworkUp_EndXmit(PPDMINETWORKUP pInterface)
274	{
275	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
276	RTCritSectLeave(&pThis->XmitLock);
277	}
278
279
280	/**
281	* @interface_method_impl{PDMINETWORKUP,pfnSetPromiscuousMode}
282	*/
283	static DECLCALLBACK(void) drvVDENetworkUp_SetPromiscuousMode(PPDMINETWORKUP pInterface, bool fPromiscuous)
284	{
285	RT_NOREF(pInterface, fPromiscuous);
286	LogFlow(("drvVDESetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
287	/* nothing to do */
288	}
289
290
291	/**
292	* Notification on link status changes.
293	*
294	* @param pInterface Pointer to the interface structure containing the called function pointer.
295	* @param enmLinkState The new link state.
296	* @thread EMT
297	*/
298	static DECLCALLBACK(void) drvVDENetworkUp_NotifyLinkChanged(PPDMINETWORKUP pInterface, PDMNETWORKLINKSTATE enmLinkState)
299	{
300	RT_NOREF(pInterface, enmLinkState);
301	LogFlow(("drvNATNetworkUp_NotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
302	/** @todo take action on link down and up. Stop the polling and such like. */
303	}
304
305
306	/**
307	* Asynchronous I/O thread for handling receive.
308	*
309	* @returns VINF_SUCCESS (ignored).
310	* @param Thread Thread handle.
311	* @param pvUser Pointer to a DRVVDE structure.
312	*/
313	static DECLCALLBACK(int) drvVDEAsyncIoThread(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
314	{
315	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
316	LogFlow(("drvVDEAsyncIoThread: pThis=%p\n", pThis));
317
318	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
319	return VINF_SUCCESS;
320
321	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
322
323	/*
324	* Polling loop.
325	*/
326	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
327	{
328	/*
329	* Wait for something to become available.
330	*/
331	struct pollfd aFDs[2];
332	aFDs[0].fd = vde_datafd(pThis->pVdeConn);
333	aFDs[0].events = POLLIN \| POLLPRI;
334	aFDs[0].revents = 0;
335	aFDs[1].fd = RTPipeToNative(pThis->hPipeRead);
336	aFDs[1].events = POLLIN \| POLLPRI \| POLLERR \| POLLHUP;
337	aFDs[1].revents = 0;
338	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
339	errno=0;
340	int rc = poll(&aFDs[0], RT_ELEMENTS(aFDs), -1 /* infinite */);
341
342	/* this might have changed in the meantime */
343	if (pThread->enmState != PDMTHREADSTATE_RUNNING)
344	break;
345
346	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
347	if ( rc > 0
348	&& (aFDs[0].revents & (POLLIN \| POLLPRI))
349	&& !aFDs[1].revents)
350	{
351	/*
352	* Read the frame.
353	*/
354	char achBuf[16384];
355	ssize_t cbRead = 0;
356	cbRead = vde_recv(pThis->pVdeConn, achBuf, sizeof(achBuf), 0);
357	rc = cbRead < 0 ? RTErrConvertFromErrno(-cbRead) : VINF_SUCCESS;
358	if (RT_SUCCESS(rc))
359	{
360	/*
361	* Wait for the device to have space for this frame.
362	* Most guests use frame-sized receive buffers, hence non-zero cbMax
363	* automatically means there is enough room for entire frame. Some
364	* guests (eg. Solaris) use large chains of small receive buffers
365	* (each 128 or so bytes large). We will still start receiving as soon
366	* as cbMax is non-zero because:
367	* - it would be quite expensive for pfnCanReceive to accurately
368	* determine free receive buffer space
369	* - if we were waiting for enough free buffers, there is a risk
370	* of deadlocking because the guest could be waiting for a receive
371	* overflow error to allocate more receive buffers
372	*/
373	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
374	int rc1 = pThis->pIAboveNet->pfnWaitReceiveAvail(pThis->pIAboveNet, RT_INDEFINITE_WAIT);
375	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
376
377	/*
378	* A return code != VINF_SUCCESS means that we were woken up during a VM
379	* state transition. Drop the packet and wait for the next one.
380	*/
381	if (RT_FAILURE(rc1))
382	continue;
383
384	/*
385	* Pass the data up.
386	*/
387	#ifdef LOG_ENABLED
388	uint64_t u64Now = RTTimeProgramNanoTS();
389	LogFlow(("drvVDEAsyncIoThread: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
390	cbRead, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
391	pThis->u64LastReceiveTS = u64Now;
392	#endif
393	Log2(("drvVDEAsyncIoThread: cbRead=%#x\n" "%.*Rhxd\n", cbRead, cbRead, achBuf));
394	STAM_COUNTER_INC(&pThis->StatPktRecv);
395	STAM_COUNTER_ADD(&pThis->StatPktRecvBytes, cbRead);
396	rc1 = pThis->pIAboveNet->pfnReceive(pThis->pIAboveNet, achBuf, cbRead);
397	AssertRC(rc1);
398	}
399	else
400	{
401	LogFlow(("drvVDEAsyncIoThread: RTFileRead -> %Rrc\n", rc));
402	if (rc == VERR_INVALID_HANDLE)
403	break;
404	RTThreadYield();
405	}
406	}
407	else if ( rc > 0
408	&& aFDs[1].revents)
409	{
410	LogFlow(("drvVDEAsyncIoThread: Control message: enmState=%d revents=%#x\n", pThread->enmState, aFDs[1].revents));
411	if (aFDs[1].revents & (POLLHUP \| POLLERR \| POLLNVAL))
412	break;
413
414	/* drain the pipe */
415	char ch;
416	size_t cbRead;
417	RTPipeRead(pThis->hPipeRead, &ch, 1, &cbRead);
418	}
419	else
420	{
421	/*
422	* poll() failed for some reason. Yield to avoid eating too much CPU.
423	*
424	* EINTR errors have been seen frequently. They should be harmless, even
425	* if they are not supposed to occur in our setup.
426	*/
427	if (errno == EINTR)
428	Log(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
429	else
430	AssertMsgFailed(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
431	RTThreadYield();
432	}
433	}
434
435
436	LogFlow(("drvVDEAsyncIoThread: returns %Rrc\n", VINF_SUCCESS));
437	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
438	return VINF_SUCCESS;
439	}
440
441
442	/**
443	* Unblock the send thread so it can respond to a state change.
444	*
445	* @returns VBox status code.
446	* @param pDevIns The pcnet device instance.
447	* @param pThread The send thread.
448	*/
449	static DECLCALLBACK(int) drvVDEAsyncIoWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
450	{
451	RT_NOREF(pThread);
452	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
453
454	size_t cbIgnored;
455	int rc = RTPipeWrite(pThis->hPipeWrite, "", 1, &cbIgnored);
456	AssertRC(rc);
457
458	return VINF_SUCCESS;
459	}
460
461
462	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
463
464	/**
465	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
466	*/
467	static DECLCALLBACK(void ) drvVDEQueryInterface(PPDMIBASE pInterface, const char pszIID)
468	{
469	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
470	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
471
472	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
473	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKUP, &pThis->INetworkUp);
474	return NULL;
475	}
476
477	/* -=-=-=-=- PDMDRVREG -=-=-=-=- */
478
479	/**
480	* Destruct a driver instance.
481	*
482	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
483	* resources can be freed correctly.
484	*
485	* @param pDrvIns The driver instance data.
486	*/
487	static DECLCALLBACK(void) drvVDEDestruct(PPDMDRVINS pDrvIns)
488	{
489	LogFlow(("drvVDEDestruct\n"));
490	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
491	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
492
493	/*
494	* Terminate the control pipe.
495	*/
496	if (pThis->hPipeWrite != NIL_RTPIPE)
497	{
498	RTPipeClose(pThis->hPipeWrite);
499	pThis->hPipeWrite = NIL_RTPIPE;
500	}
501	if (pThis->hPipeRead != NIL_RTPIPE)
502	{
503	RTPipeClose(pThis->hPipeRead);
504	pThis->hPipeRead = NIL_RTPIPE;
505	}
506
507	MMR3HeapFree(pThis->pszDeviceName);
508	pThis->pszDeviceName = NULL;
509
510	/*
511	* Kill the xmit lock.
512	*/
513	if (RTCritSectIsInitialized(&pThis->XmitLock))
514	RTCritSectDelete(&pThis->XmitLock);
515
516	if (pThis->pVdeConn)
517	{
518	vde_close(pThis->pVdeConn);
519	pThis->pVdeConn = NULL;
520	}
521
522	#ifdef VBOX_WITH_STATISTICS
523	/*
524	* Deregister statistics.
525	*/
526	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSent);
527	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSentBytes);
528	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecv);
529	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecvBytes);
530	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatTransmit);
531	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatReceive);
532	#endif /* VBOX_WITH_STATISTICS */
533	}
534
535
536	/**
537	* Construct a VDE network transport driver instance.
538	*
539	* @copydoc FNPDMDRVCONSTRUCT
540	*/
541	static DECLCALLBACK(int) drvVDEConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
542	{
543	RT_NOREF(fFlags);
544	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
545	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
546
547	/*
548	* Init the static parts.
549	*/
550	pThis->pDrvIns = pDrvIns;
551	pThis->pszDeviceName = NULL;
552	pThis->hPipeRead = NIL_RTPIPE;
553	pThis->hPipeWrite = NIL_RTPIPE;
554
555	/* IBase */
556	pDrvIns->IBase.pfnQueryInterface = drvVDEQueryInterface;
557	/* INetwork */
558	pThis->INetworkUp.pfnBeginXmit = drvVDENetworkUp_BeginXmit;
559	pThis->INetworkUp.pfnAllocBuf = drvVDENetworkUp_AllocBuf;
560	pThis->INetworkUp.pfnFreeBuf = drvVDENetworkUp_FreeBuf;
561	pThis->INetworkUp.pfnSendBuf = drvVDENetworkUp_SendBuf;
562	pThis->INetworkUp.pfnEndXmit = drvVDENetworkUp_EndXmit;
563	pThis->INetworkUp.pfnSetPromiscuousMode = drvVDENetworkUp_SetPromiscuousMode;
564	pThis->INetworkUp.pfnNotifyLinkChanged = drvVDENetworkUp_NotifyLinkChanged;
565
566	#ifdef VBOX_WITH_STATISTICS
567	/*
568	* Statistics.
569	*/
570	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSent, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of sent packets.", "/Drivers/VDE%d/Packets/Sent", pDrvIns->iInstance);
571	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSentBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent bytes.", "/Drivers/VDE%d/Bytes/Sent", pDrvIns->iInstance);
572	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecv, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of received packets.", "/Drivers/VDE%d/Packets/Received", pDrvIns->iInstance);
573	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecvBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of received bytes.", "/Drivers/VDE%d/Bytes/Received", pDrvIns->iInstance);
574	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet transmit runs.", "/Drivers/VDE%d/Transmit", pDrvIns->iInstance);
575	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet receive runs.", "/Drivers/VDE%d/Receive", pDrvIns->iInstance);
576	#endif /* VBOX_WITH_STATISTICS */
577
578	/*
579	* Validate the config.
580	*/
581	if (!CFGMR3AreValuesValid(pCfg, "network"))
582	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, "");
583
584	/*
585	* Check that no-one is attached to us.
586	*/
587	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
588	("Configuration error: Not possible to attach anything to this driver!\n"),
589	VERR_PDM_DRVINS_NO_ATTACH);
590
591	/*
592	* Query the network port interface.
593	*/
594	pThis->pIAboveNet = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMINETWORKDOWN);
595	if (!pThis->pIAboveNet)
596	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
597	N_("Configuration error: The above device/driver didn't export the network port interface"));
598
599	/*
600	* Read the configuration.
601	*/
602	int rc;
603	char szNetwork[RTPATH_MAX];
604	rc = CFGMR3QueryString(pCfg, "network", szNetwork, sizeof(szNetwork));
605	if (RT_FAILURE(rc))
606	*szNetwork=0;
607
608	if (RT_FAILURE(DrvVDELoadVDEPlug()))
609	return PDMDrvHlpVMSetError(pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
610	N_("VDEplug library: not found"));
611	pThis->pVdeConn = vde_open(szNetwork, "VirtualBOX", NULL);
612	if (pThis->pVdeConn == NULL)
613	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
614	N_("Failed to connect to the VDE SWITCH"));
615
616	/*
617	* Create the transmit lock.
618	*/
619	rc = RTCritSectInit(&pThis->XmitLock);
620	AssertRCReturn(rc, rc);
621
622	/*
623	* Create the control pipe.
624	*/
625	rc = RTPipeCreate(&pThis->hPipeRead, &pThis->hPipeWrite, 0 /fFlags/);
626	AssertRCReturn(rc, rc);
627
628	/*
629	* Create the async I/O thread.
630	*/
631	rc = PDMDrvHlpThreadCreate(pDrvIns, &pThis->pThread, pThis, drvVDEAsyncIoThread, drvVDEAsyncIoWakeup, 128 * _1K, RTTHREADTYPE_IO, "VDE");
632	AssertRCReturn(rc, rc);
633
634	return rc;
635	}
636
637
638	/**
639	* VDE network transport driver registration record.
640	*/
641	const PDMDRVREG g_DrvVDE =
642	{
643	/* u32Version */
644	PDM_DRVREG_VERSION,
645	/* szName */
646	"VDE",
647	/* szRCMod */
648	"",
649	/* szR0Mod */
650	"",
651	/* pszDescription */
652	"VDE Network Transport Driver",
653	/* fFlags */
654	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
655	/* fClass. */
656	PDM_DRVREG_CLASS_NETWORK,
657	/* cMaxInstances */
658	~0U,
659	/* cbInstance */
660	sizeof(DRVVDE),
661	/* pfnConstruct */
662	drvVDEConstruct,
663	/* pfnDestruct */
664	drvVDEDestruct,
665	/* pfnRelocate */
666	NULL,
667	/* pfnIOCtl */
668	NULL,
669	/* pfnPowerOn */
670	NULL,
671	/* pfnReset */
672	NULL,
673	/* pfnSuspend */
674	NULL, /** @todo Do power on, suspend and resume handlers! */
675	/* pfnResume */
676	NULL,
677	/* pfnAttach */
678	NULL,
679	/* pfnDetach */
680	NULL,
681	/* pfnPowerOff */
682	NULL,
683	/* pfnSoftReset */
684	NULL,
685	/* u32EndVersion */
686	PDM_DRVREG_VERSION
687	};
688

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source: vbox/trunk/src/VBox/Devices/Network/DrvVDE.cpp@ 78229

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