DrvVDE.cpp@ 29354

Last change on this file since 29354 was 29122, checked in by vboxsync, 15 years ago
FE/Qt, Devices: moved VDE plugin headers into include/VBox and enabled VDE in the GUI, but only if the plugin is found on the host (Linux and FreeBSD only)
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File size: 22.8 KB

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1	/* $Id: DrvVDE.cpp 29122 2010-05-06 09:13:22Z vboxsync $ */
2	/** @file
3	* VDE network transport driver.
4	*/
5
6	/*
7	* Contributed by Renzo Davoli. VirtualSquare. University of Bologna, 2010
8	* Copyright (C) 2006-2010 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/pdmdrv.h>
25	#include <VBox/pdmnetifs.h>
26	#include <VBox/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/semaphore.h>
37	#include <iprt/string.h>
38	#include <iprt/thread.h>
39	#include <iprt/uuid.h>
40
41	#include <sys/ioctl.h>
42	#include <sys/poll.h>
43	#include <sys/fcntl.h>
44	#include <errno.h>
45	#include <unistd.h>
46
47	#include "Builtins.h"
48
49
50	/*******************************************************************************
51	* Structures and Typedefs *
52	*******************************************************************************/
53	/**
54	* VDE driver instance data.
55	*
56	* @implements PDMINETWORKUP
57	*/
58	typedef struct DRVVDE
59	{
60	/** The network interface. */
61	PDMINETWORKUP INetworkUp;
62	/** The network interface. */
63	PPDMINETWORKDOWN pIAboveNet;
64	/** Pointer to the driver instance. */
65	PPDMDRVINS pDrvIns;
66	/** VDE device file handle. */
67	RTFILE FileDevice;
68	/** The configured VDE device name. */
69	char *pszDeviceName;
70	/** The write end of the control pipe. */
71	RTFILE PipeWrite;
72	/** The read end of the control pipe. */
73	RTFILE PipeRead;
74	/** Reader thread. */
75	PPDMTHREAD pThread;
76	/** The connection to the VDE switch */
77	VDECONN *vdeconn;
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	int rc;
211	if (!pSgBuf->pvUser)
212	{
213	#ifdef LOG_ENABLED
214	uint64_t u64Now = RTTimeProgramNanoTS();
215	LogFlow(("drvVDESend: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
216	pSgBuf->cbUsed, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
217	pThis->u64LastTransferTS = u64Now;
218	#endif
219	Log2(("drvVDESend: pSgBuf->aSegs[0].pvSeg=%p pSgBuf->cbUsed=%#x\n"
220	"%.*Rhxd\n",
221	pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, pSgBuf->cbUsed, pSgBuf->aSegs[0].pvSeg));
222
223	ssize_t cbSent;
224	cbSent = vde_send(pThis->vdeconn, pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, 0);
225	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
226	}
227	else
228	{
229	uint8_t abHdrScratch[256];
230	uint8_t const pbFrame = (uint8_t const )pSgBuf->aSegs[0].pvSeg;
231	PCPDMNETWORKGSO pGso = (PCPDMNETWORKGSO)pSgBuf->pvUser;
232	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso, pSgBuf->cbUsed); Assert(cSegs > 1);
233	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
234	{
235	uint32_t cbSegFrame;
236	void pvSegFrame = PDMNetGsoCarveSegmentQD(pGso, (uint8_t )pbFrame, pSgBuf->cbUsed, abHdrScratch,
237	iSeg, cSegs, &cbSegFrame);
238	ssize_t cbSent;
239	cbSent = vde_send(pThis->vdeconn, pvSegFrame, cbSegFrame, 0);
240	rc = cbSent < 0 ? RTErrConvertFromErrno(-cbSent) : VINF_SUCCESS;
241	if (RT_FAILURE(rc))
242	break;
243	}
244	}
245
246	pSgBuf->fFlags = 0;
247	RTMemFree(pSgBuf);
248
249	STAM_PROFILE_STOP(&pThis->StatTransmit, a);
250	AssertRC(rc);
251	if (RT_FAILURE(rc))
252	rc = rc == VERR_NO_MEMORY ? VERR_NET_NO_BUFFER_SPACE : VERR_NET_DOWN;
253	return rc;
254	}
255
256
257	/**
258	* @interface_method_impl{PDMINETWORKUP,pfnEndXmit}
259	*/
260	static DECLCALLBACK(void) drvVDENetworkUp_EndXmit(PPDMINETWORKUP pInterface)
261	{
262	PDRVVDE pThis = PDMINETWORKUP_2_DRVVDE(pInterface);
263	RTCritSectLeave(&pThis->XmitLock);
264	}
265
266
267	/**
268	* @interface_method_impl{PDMINETWORKUP,pfnSetPromiscuousMode}
269	*/
270	static DECLCALLBACK(void) drvVDENetworkUp_SetPromiscuousMode(PPDMINETWORKUP pInterface, bool fPromiscuous)
271	{
272	LogFlow(("drvVDESetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
273	/* nothing to do */
274	}
275
276
277	/**
278	* Notification on link status changes.
279	*
280	* @param pInterface Pointer to the interface structure containing the called function pointer.
281	* @param enmLinkState The new link state.
282	* @thread EMT
283	*/
284	static DECLCALLBACK(void) drvVDENetworkUp_NotifyLinkChanged(PPDMINETWORKUP pInterface, PDMNETWORKLINKSTATE enmLinkState)
285	{
286	LogFlow(("drvNATNetworkUp_NotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
287	/** @todo take action on link down and up. Stop the polling and such like. */
288	}
289
290
291	/**
292	* Asynchronous I/O thread for handling receive.
293	*
294	* @returns VINF_SUCCESS (ignored).
295	* @param Thread Thread handle.
296	* @param pvUser Pointer to a DRVVDE structure.
297	*/
298	static DECLCALLBACK(int) drvVDEAsyncIoThread(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
299	{
300	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
301	LogFlow(("drvVDEAsyncIoThread: pThis=%p\n", pThis));
302
303	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
304	return VINF_SUCCESS;
305
306	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
307
308	/*
309	* Polling loop.
310	*/
311	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
312	{
313	/*
314	* Wait for something to become available.
315	*/
316	struct pollfd aFDs[2];
317	aFDs[0].fd = vde_datafd(pThis->vdeconn);
318	aFDs[0].events = POLLIN \| POLLPRI;
319	aFDs[0].revents = 0;
320	aFDs[1].fd = pThis->PipeRead;
321	aFDs[1].events = POLLIN \| POLLPRI \| POLLERR \| POLLHUP;
322	aFDs[1].revents = 0;
323	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
324	errno=0;
325	int rc = poll(&aFDs[0], RT_ELEMENTS(aFDs), -1 /* infinite */);
326
327	/* this might have changed in the meantime */
328	if (pThread->enmState != PDMTHREADSTATE_RUNNING)
329	break;
330
331	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
332	if ( rc > 0
333	&& (aFDs[0].revents & (POLLIN \| POLLPRI))
334	&& !aFDs[1].revents)
335	{
336	/*
337	* Read the frame.
338	*/
339	char achBuf[16384];
340	ssize_t cbRead = 0;
341	cbRead = vde_recv(pThis->vdeconn, achBuf, sizeof(achBuf), 0);
342	rc = cbRead < 0 ? RTErrConvertFromErrno(-cbRead) : VINF_SUCCESS;
343	if (RT_SUCCESS(rc))
344	{
345	/*
346	* Wait for the device to have space for this frame.
347	* Most guests use frame-sized receive buffers, hence non-zero cbMax
348	* automatically means there is enough room for entire frame. Some
349	* guests (eg. Solaris) use large chains of small receive buffers
350	* (each 128 or so bytes large). We will still start receiving as soon
351	* as cbMax is non-zero because:
352	* - it would be quite expensive for pfnCanReceive to accurately
353	* determine free receive buffer space
354	* - if we were waiting for enough free buffers, there is a risk
355	* of deadlocking because the guest could be waiting for a receive
356	* overflow error to allocate more receive buffers
357	*/
358	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
359	int rc1 = pThis->pIAboveNet->pfnWaitReceiveAvail(pThis->pIAboveNet, RT_INDEFINITE_WAIT);
360	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
361
362	/*
363	* A return code != VINF_SUCCESS means that we were woken up during a VM
364	* state transistion. Drop the packet and wait for the next one.
365	*/
366	if (RT_FAILURE(rc1))
367	continue;
368
369	/*
370	* Pass the data up.
371	*/
372	#ifdef LOG_ENABLED
373	uint64_t u64Now = RTTimeProgramNanoTS();
374	LogFlow(("drvVDEAsyncIoThread: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
375	cbRead, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
376	pThis->u64LastReceiveTS = u64Now;
377	#endif
378	Log2(("drvVDEAsyncIoThread: cbRead=%#x\n" "%.*Rhxd\n", cbRead, cbRead, achBuf));
379	STAM_COUNTER_INC(&pThis->StatPktRecv);
380	STAM_COUNTER_ADD(&pThis->StatPktRecvBytes, cbRead);
381	rc1 = pThis->pIAboveNet->pfnReceive(pThis->pIAboveNet, achBuf, cbRead);
382	AssertRC(rc1);
383	}
384	else
385	{
386	LogFlow(("drvVDEAsyncIoThread: RTFileRead -> %Rrc\n", rc));
387	if (rc == VERR_INVALID_HANDLE)
388	break;
389	RTThreadYield();
390	}
391	}
392	else if ( rc > 0
393	&& aFDs[1].revents)
394	{
395	LogFlow(("drvVDEAsyncIoThread: Control message: enmState=%d revents=%#x\n", pThread->enmState, aFDs[1].revents));
396	if (aFDs[1].revents & (POLLHUP \| POLLERR \| POLLNVAL))
397	break;
398
399	/* drain the pipe */
400	char ch;
401	size_t cbRead;
402	RTFileRead(pThis->PipeRead, &ch, 1, &cbRead);
403	}
404	else
405	{
406	/*
407	* poll() failed for some reason. Yield to avoid eating too much CPU.
408	*
409	* EINTR errors have been seen frequently. They should be harmless, even
410	* if they are not supposed to occur in our setup.
411	*/
412	if (errno == EINTR)
413	Log(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
414	else
415	AssertMsgFailed(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
416	RTThreadYield();
417	}
418	}
419
420
421	LogFlow(("drvVDEAsyncIoThread: returns %Rrc\n", VINF_SUCCESS));
422	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
423	return VINF_SUCCESS;
424	}
425
426
427	/**
428	* Unblock the send thread so it can respond to a state change.
429	*
430	* @returns VBox status code.
431	* @param pDevIns The pcnet device instance.
432	* @param pThread The send thread.
433	*/
434	static DECLCALLBACK(int) drvVDEAsyncIoWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
435	{
436	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
437
438	int rc = RTFileWrite(pThis->PipeWrite, "", 1, NULL);
439	AssertRC(rc);
440
441	return VINF_SUCCESS;
442	}
443
444
445	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
446
447	/**
448	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
449	*/
450	static DECLCALLBACK(void ) drvVDEQueryInterface(PPDMIBASE pInterface, const char pszIID)
451	{
452	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
453	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
454
455	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
456	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKUP, &pThis->INetworkUp);
457	return NULL;
458	}
459
460	/* -=-=-=-=- PDMDRVREG -=-=-=-=- */
461
462	/**
463	* Destruct a driver instance.
464	*
465	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
466	* resources can be freed correctly.
467	*
468	* @param pDrvIns The driver instance data.
469	*/
470	static DECLCALLBACK(void) drvVDEDestruct(PPDMDRVINS pDrvIns)
471	{
472	LogFlow(("drvVDEDestruct\n"));
473	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
474	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
475
476	/*
477	* Terminate the control pipe.
478	*/
479	if (pThis->PipeWrite != NIL_RTFILE)
480	{
481	int rc = RTFileClose(pThis->PipeWrite);
482	AssertRC(rc);
483	pThis->PipeWrite = NIL_RTFILE;
484	}
485	if (pThis->PipeRead != NIL_RTFILE)
486	{
487	int rc = RTFileClose(pThis->PipeRead);
488	AssertRC(rc);
489	pThis->PipeRead = NIL_RTFILE;
490	}
491
492	MMR3HeapFree(pThis->pszDeviceName);
493
494	/*
495	* Kill the xmit lock.
496	*/
497	if (RTCritSectIsInitialized(&pThis->XmitLock))
498	RTCritSectDelete(&pThis->XmitLock);
499
500	#ifdef VBOX_WITH_STATISTICS
501	/*
502	* Deregister statistics.
503	*/
504	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSent);
505	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktSentBytes);
506	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecv);
507	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatPktRecvBytes);
508	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatTransmit);
509	PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatReceive);
510	#endif /* VBOX_WITH_STATISTICS */
511	}
512
513
514	/**
515	* Construct a VDE network transport driver instance.
516	*
517	* @copydoc FNPDMDRVCONSTRUCT
518	*/
519	static DECLCALLBACK(int) drvVDEConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
520	{
521	PDRVVDE pThis = PDMINS_2_DATA(pDrvIns, PDRVVDE);
522	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
523
524	/*
525	* Init the static parts.
526	*/
527	pThis->pDrvIns = pDrvIns;
528	pThis->FileDevice = NIL_RTFILE;
529	pThis->pszDeviceName = NULL;
530	pThis->PipeRead = NIL_RTFILE;
531	pThis->PipeWrite = NIL_RTFILE;
532
533	/* IBase */
534	pDrvIns->IBase.pfnQueryInterface = drvVDEQueryInterface;
535	/* INetwork */
536	pThis->INetworkUp.pfnBeginXmit = drvVDENetworkUp_BeginXmit;
537	pThis->INetworkUp.pfnAllocBuf = drvVDENetworkUp_AllocBuf;
538	pThis->INetworkUp.pfnFreeBuf = drvVDENetworkUp_FreeBuf;
539	pThis->INetworkUp.pfnSendBuf = drvVDENetworkUp_SendBuf;
540	pThis->INetworkUp.pfnEndXmit = drvVDENetworkUp_EndXmit;
541	pThis->INetworkUp.pfnSetPromiscuousMode = drvVDENetworkUp_SetPromiscuousMode;
542	pThis->INetworkUp.pfnNotifyLinkChanged = drvVDENetworkUp_NotifyLinkChanged;
543
544	#ifdef VBOX_WITH_STATISTICS
545	/*
546	* Statistics.
547	*/
548	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSent, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of sent packets.", "/Drivers/VDE%d/Packets/Sent", pDrvIns->iInstance);
549	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktSentBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent bytes.", "/Drivers/VDE%d/Bytes/Sent", pDrvIns->iInstance);
550	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecv, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of received packets.", "/Drivers/VDE%d/Packets/Received", pDrvIns->iInstance);
551	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatPktRecvBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of received bytes.", "/Drivers/VDE%d/Bytes/Received", pDrvIns->iInstance);
552	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet transmit runs.", "/Drivers/VDE%d/Transmit", pDrvIns->iInstance);
553	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet receive runs.", "/Drivers/VDE%d/Receive", pDrvIns->iInstance);
554	#endif /* VBOX_WITH_STATISTICS */
555
556	/*
557	* Validate the config.
558	*/
559	if (!CFGMR3AreValuesValid(pCfg, "Network"))
560	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, "");
561
562	/*
563	* Check that no-one is attached to us.
564	*/
565	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
566	("Configuration error: Not possible to attach anything to this driver!\n"),
567	VERR_PDM_DRVINS_NO_ATTACH);
568
569	/*
570	* Query the network port interface.
571	*/
572	pThis->pIAboveNet = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMINETWORKDOWN);
573	if (!pThis->pIAboveNet)
574	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
575	N_("Configuration error: The above device/driver didn't export the network port interface"));
576
577	/*
578	* Read the configuration.
579	*/
580	int rc;
581	char szNetwork[RTPATH_MAX];
582	rc = CFGMR3QueryString(pCfg, "Network", szNetwork, sizeof(szNetwork));
583	if (RT_FAILURE(rc))
584	*szNetwork=0;
585
586	if (RT_FAILURE(DrvVDELoadVDEPlug()))
587	return PDMDrvHlpVMSetError(pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
588	N_("VDEplug library: not found"));
589	pThis->vdeconn = vde_open(szNetwork, "VirtualBOX", NULL);
590	if (pThis->vdeconn == NULL)
591	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
592	N_("Failed to connect to the VDE SWITCH"));
593
594	/*
595	* Create the transmit lock.
596	*/
597	rc = RTCritSectInit(&pThis->XmitLock);
598	AssertRCReturn(rc, rc);
599
600	/*
601	* Create the control pipe.
602	*/
603	int fds[2];
604	if (pipe(&fds[0]) != 0) /** @todo RTPipeCreate() or something... */
605	{
606	rc = RTErrConvertFromErrno(errno);
607	AssertRC(rc);
608	return rc;
609	}
610	pThis->PipeRead = fds[0];
611	pThis->PipeWrite = fds[1];
612
613	/*
614	* Create the async I/O thread.
615	*/
616	rc = PDMDrvHlpThreadCreate(pDrvIns, &pThis->pThread, pThis, drvVDEAsyncIoThread, drvVDEAsyncIoWakeup, 128 * _1K, RTTHREADTYPE_IO, "VDE");
617	AssertRCReturn(rc, rc);
618
619	return rc;
620	}
621
622
623	/**
624	* VDE network transport driver registration record.
625	*/
626	const PDMDRVREG g_DrvVDE =
627	{
628	/* u32Version */
629	PDM_DRVREG_VERSION,
630	/* szName */
631	"VDE",
632	/* szRCMod */
633	"",
634	/* szR0Mod */
635	"",
636	/* pszDescription */
637	"VDE Network Transport Driver",
638	/* fFlags */
639	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
640	/* fClass. */
641	PDM_DRVREG_CLASS_NETWORK,
642	/* cMaxInstances */
643	~0,
644	/* cbInstance */
645	sizeof(DRVVDE),
646	/* pfnConstruct */
647	drvVDEConstruct,
648	/* pfnDestruct */
649	drvVDEDestruct,
650	/* pfnRelocate */
651	NULL,
652	/* pfnIOCtl */
653	NULL,
654	/* pfnPowerOn */
655	NULL,
656	/* pfnReset */
657	NULL,
658	/* pfnSuspend */
659	NULL, /** @todo Do power on, suspend and resume handlers! */
660	/* pfnResume */
661	NULL,
662	/* pfnAttach */
663	NULL,
664	/* pfnDetach */
665	NULL,
666	/* pfnPowerOff */
667	NULL,
668	/* pfnSoftReset */
669	NULL,
670	/* u32EndVersion */
671	PDM_DRVREG_VERSION
672	};
673

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source: vbox/trunk/src/VBox/Devices/Network/DrvVDE.cpp@ 29354

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