DrvIntNet.cpp@ 15953

Last change on this file since 15953 was 15541, checked in by vboxsync, 16 years ago
Don't exit intnet receive loop if sem wait inside NIC was interrupted. Fixes hostif net loss after VM reboot.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 44.1 KB

Line
1	/* $Id: DrvIntNet.cpp 15541 2008-12-15 20:29:08Z vboxsync $ */
2	/** @file
3	* DrvIntNet - Internal network transport driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_DRV_INTNET
26	#include <VBox/pdmdrv.h>
27	#include <VBox/cfgm.h>
28	#include <VBox/intnet.h>
29	#include <VBox/vmm.h>
30	#include <VBox/err.h>
31
32	#include <VBox/log.h>
33	#include <iprt/asm.h>
34	#include <iprt/assert.h>
35	#include <iprt/thread.h>
36	#include <iprt/semaphore.h>
37	#include <iprt/string.h>
38	#include <iprt/time.h>
39	#include <iprt/ctype.h>
40
41	#include "../Builtins.h"
42
43	#if defined(RT_OS_WINDOWS) && defined(VBOX_WITH_NETFLT)
44	# include "win/DrvIntNet-win.h"
45	#endif
46
47
48	/*******************************************************************************
49	* Structures and Typedefs *
50	*******************************************************************************/
51	/**
52	* The state of the asynchronous thread.
53	*/
54	typedef enum ASYNCSTATE
55	{
56	/** The thread is suspended. */
57	ASYNCSTATE_SUSPENDED = 1,
58	/** The thread is running. */
59	ASYNCSTATE_RUNNING,
60	/** The thread must (/has) terminate. */
61	ASYNCSTATE_TERMINATE,
62	/** The usual 32-bit type blowup. */
63	ASYNCSTATE_32BIT_HACK = 0x7fffffff
64	} ASYNCSTATE;
65
66	/**
67	* Block driver instance data.
68	*/
69	typedef struct DRVINTNET
70	{
71	/** The network interface. */
72	PDMINETWORKCONNECTOR INetworkConnector;
73	/** The network interface. */
74	PPDMINETWORKPORT pPort;
75	/** The network config interface.
76	* Can (in theory at least) be NULL. */
77	PPDMINETWORKCONFIG pConfigIf;
78	/** Pointer to the driver instance. */
79	PPDMDRVINS pDrvIns;
80	/** Interface handle. */
81	INTNETIFHANDLE hIf;
82	/** Pointer to the communication buffer. */
83	PINTNETBUF pBuf;
84	/** The thread state. */
85	ASYNCSTATE volatile enmState;
86	/** Reader thread. */
87	RTTHREAD Thread;
88	/** Event semaphore the Thread waits on while the VM is suspended. */
89	RTSEMEVENT EventSuspended;
90	/** Set if the link is down.
91	* When the link is down all incoming packets will be dropped. */
92	bool volatile fLinkDown;
93	/** Set if data transmission should start immediately and deactivate
94	* as late as possible. */
95	bool fActivateEarlyDeactivateLate;
96
97	#ifdef VBOX_WITH_STATISTICS
98	/** Profiling packet transmit runs. */
99	STAMPROFILE StatTransmit;
100	/** Profiling packet receive runs. */
101	STAMPROFILEADV StatReceive;
102	#endif /* VBOX_WITH_STATISTICS */
103
104	#ifdef LOG_ENABLED
105	/** The nano ts of the last transfer. */
106	uint64_t u64LastTransferTS;
107	/** The nano ts of the last receive. */
108	uint64_t u64LastReceiveTS;
109	#endif
110	/** The network name. */
111	char szNetwork[INTNET_MAX_NETWORK_NAME];
112	} DRVINTNET, *PDRVINTNET;
113
114
115	/** Converts a pointer to DRVINTNET::INetworkConnector to a PDRVINTNET. */
116	#define PDMINETWORKCONNECTOR_2_DRVINTNET(pInterface) ( (PDRVINTNET)((uintptr_t)pInterface - RT_OFFSETOF(DRVINTNET, INetworkConnector)) )
117
118
119	/**
120	* Updates the MAC address on the kernel side.
121	*
122	* @returns VBox status code.
123	* @param pThis The driver instance.
124	*/
125	static int drvIntNetUpdateMacAddress(PDRVINTNET pThis)
126	{
127	if (!pThis->pConfigIf)
128	return VINF_SUCCESS;
129
130	INTNETIFSETMACADDRESSREQ SetMacAddressReq;
131	SetMacAddressReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
132	SetMacAddressReq.Hdr.cbReq = sizeof(SetMacAddressReq);
133	SetMacAddressReq.pSession = NIL_RTR0PTR;
134	SetMacAddressReq.hIf = pThis->hIf;
135	int rc = pThis->pConfigIf->pfnGetMac(pThis->pConfigIf, &SetMacAddressReq.Mac);
136	if (RT_SUCCESS(rc))
137	rc = pThis->pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pThis->pDrvIns, VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS,
138	&SetMacAddressReq, sizeof(SetMacAddressReq));
139
140	Log(("drvIntNetUpdateMacAddress: %.*Rhxs rc=%Rrc\n", sizeof(SetMacAddressReq.Mac), &SetMacAddressReq.Mac, rc));
141	return rc;
142	}
143
144
145	/**
146	* Sets the kernel interface active or inactive.
147	*
148	* Worker for poweron, poweroff, suspend and resume.
149	*
150	* @returns VBox status code.
151	* @param pThis The driver instance.
152	* @param fActive The new state.
153	*/
154	static int drvIntNetSetActive(PDRVINTNET pThis, bool fActive)
155	{
156	if (!pThis->pConfigIf)
157	return VINF_SUCCESS;
158
159	INTNETIFSETACTIVEREQ SetActiveReq;
160	SetActiveReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
161	SetActiveReq.Hdr.cbReq = sizeof(SetActiveReq);
162	SetActiveReq.pSession = NIL_RTR0PTR;
163	SetActiveReq.hIf = pThis->hIf;
164	SetActiveReq.fActive = fActive;
165	int rc = pThis->pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pThis->pDrvIns, VMMR0_DO_INTNET_IF_SET_ACTIVE,
166	&SetActiveReq, sizeof(SetActiveReq));
167
168	Log(("drvIntNetUpdateMacAddress: fActive=%d rc=%Rrc\n", fActive, rc));
169	AssertRC(rc);
170	return rc;
171	}
172
173
174	/**
175	* Writes a frame packet to the buffer.
176	*
177	* @returns VBox status code.
178	* @param pBuf The buffer.
179	* @param pRingBuf The ring buffer to read from.
180	* @param pvFrame The frame to write.
181	* @param cbFrame The size of the frame.
182	* @remark This is the same as INTNETRingWriteFrame
183	*/
184	static int drvIntNetRingWriteFrame(PINTNETBUF pBuf, PINTNETRINGBUF pRingBuf, const void *pvFrame, uint32_t cbFrame)
185	{
186	/*
187	* Validate input.
188	*/
189	Assert(pBuf);
190	Assert(pRingBuf);
191	Assert(pvFrame);
192	Assert(cbFrame >= sizeof(RTMAC) * 2);
193	uint32_t offWrite = pRingBuf->offWrite;
194	Assert(offWrite == RT_ALIGN_32(offWrite, sizeof(INTNETHDR)));
195	uint32_t offRead = pRingBuf->offRead;
196	Assert(offRead == RT_ALIGN_32(offRead, sizeof(INTNETHDR)));
197
198	const uint32_t cb = RT_ALIGN_32(cbFrame, sizeof(INTNETHDR));
199	if (offRead <= offWrite)
200	{
201	/*
202	* Try fit it all before the end of the buffer.
203	*/
204	if (pRingBuf->offEnd - offWrite >= cb + sizeof(INTNETHDR))
205	{
206	PINTNETHDR pHdr = (PINTNETHDR)((uint8_t *)pBuf + offWrite);
207	pHdr->u16Type = INTNETHDR_TYPE_FRAME;
208	pHdr->cbFrame = cbFrame;
209	pHdr->offFrame = sizeof(INTNETHDR);
210
211	memcpy(pHdr + 1, pvFrame, cbFrame);
212
213	offWrite += cb + sizeof(INTNETHDR);
214	Assert(offWrite <= pRingBuf->offEnd && offWrite >= pRingBuf->offStart);
215	if (offWrite >= pRingBuf->offEnd)
216	offWrite = pRingBuf->offStart;
217	Log2(("WriteFrame: offWrite: %#x -> %#x (1)\n", pRingBuf->offWrite, offWrite));
218	ASMAtomicXchgU32(&pRingBuf->offWrite, offWrite);
219	return VINF_SUCCESS;
220	}
221
222	/*
223	* Try fit the frame at the start of the buffer.
224	* (The header fits before the end of the buffer because of alignment.)
225	*/
226	AssertMsg(pRingBuf->offEnd - offWrite >= sizeof(INTNETHDR), ("offEnd=%x offWrite=%x\n", pRingBuf->offEnd, offWrite));
227	if (offRead - pRingBuf->offStart > cb) /* not >= ! */
228	{
229	PINTNETHDR pHdr = (PINTNETHDR)((uint8_t *)pBuf + offWrite);
230	void pvFrameOut = (PINTNETHDR)((uint8_t )pBuf + pRingBuf->offStart);
231	pHdr->u16Type = INTNETHDR_TYPE_FRAME;
232	pHdr->cbFrame = cbFrame;
233	pHdr->offFrame = (intptr_t)pvFrameOut - (intptr_t)pHdr;
234
235	memcpy(pvFrameOut, pvFrame, cbFrame);
236
237	offWrite = pRingBuf->offStart + cb;
238	ASMAtomicXchgU32(&pRingBuf->offWrite, offWrite);
239	Log2(("WriteFrame: offWrite: %#x -> %#x (2)\n", pRingBuf->offWrite, offWrite));
240	return VINF_SUCCESS;
241	}
242	}
243	/*
244	* The reader is ahead of the writer, try fit it into that space.
245	*/
246	else if (offRead - offWrite > cb + sizeof(INTNETHDR)) /* not >= ! */
247	{
248	PINTNETHDR pHdr = (PINTNETHDR)((uint8_t *)pBuf + offWrite);
249	pHdr->u16Type = INTNETHDR_TYPE_FRAME;
250	pHdr->cbFrame = cbFrame;
251	pHdr->offFrame = sizeof(INTNETHDR);
252
253	memcpy(pHdr + 1, pvFrame, cbFrame);
254
255	offWrite += cb + sizeof(INTNETHDR);
256	ASMAtomicXchgU32(&pRingBuf->offWrite, offWrite);
257	Log2(("WriteFrame: offWrite: %#x -> %#x (3)\n", pRingBuf->offWrite, offWrite));
258	return VINF_SUCCESS;
259	}
260
261	/* (it didn't fit) */
262	/** @todo stats */
263	return VERR_BUFFER_OVERFLOW;
264	}
265
266
267	/**
268	* Send data to the network.
269	*
270	* @returns VBox status code.
271	* @param pInterface Pointer to the interface structure containing the called function pointer.
272	* @param pvBuf Data to send.
273	* @param cb Number of bytes to send.
274	* @thread EMT
275	*/
276	static DECLCALLBACK(int) drvIntNetSend(PPDMINETWORKCONNECTOR pInterface, const void *pvBuf, size_t cb)
277	{
278	PDRVINTNET pThis = PDMINETWORKCONNECTOR_2_DRVINTNET(pInterface);
279	STAM_PROFILE_START(&pThis->StatTransmit, a);
280
281	#ifdef LOG_ENABLED
282	uint64_t u64Now = RTTimeProgramNanoTS();
283	LogFlow(("drvIntNetSend: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
284	cb, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
285	pThis->u64LastTransferTS = u64Now;
286	Log2(("drvIntNetSend: pvBuf=%p cb=%#x\n"
287	"%.*Rhxd\n",
288	pvBuf, cb, cb, pvBuf));
289	#endif
290
291	/*
292	* Add the frame to the send buffer and push it onto the network.
293	*/
294	int rc = drvIntNetRingWriteFrame(pThis->pBuf, &pThis->pBuf->Send, pvBuf, cb);
295	if ( rc == VERR_BUFFER_OVERFLOW
296	&& pThis->pBuf->cbSend < cb)
297	{
298	INTNETIFSENDREQ SendReq;
299	SendReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
300	SendReq.Hdr.cbReq = sizeof(SendReq);
301	SendReq.pSession = NIL_RTR0PTR;
302	SendReq.hIf = pThis->hIf;
303	pThis->pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pThis->pDrvIns, VMMR0_DO_INTNET_IF_SEND, &SendReq, sizeof(SendReq));
304
305	rc = drvIntNetRingWriteFrame(pThis->pBuf, &pThis->pBuf->Send, pvBuf, cb);
306	}
307
308	if (RT_SUCCESS(rc))
309	{
310	INTNETIFSENDREQ SendReq;
311	SendReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
312	SendReq.Hdr.cbReq = sizeof(SendReq);
313	SendReq.pSession = NIL_RTR0PTR;
314	SendReq.hIf = pThis->hIf;
315	rc = pThis->pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pThis->pDrvIns, VMMR0_DO_INTNET_IF_SEND, &SendReq, sizeof(SendReq));
316	}
317
318	STAM_PROFILE_STOP(&pThis->StatTransmit, a);
319	AssertRC(rc);
320	return rc;
321	}
322
323
324	/**
325	* Set promiscuous mode.
326	*
327	* This is called when the promiscuous mode is set. This means that there doesn't have
328	* to be a mode change when it's called.
329	*
330	* @param pInterface Pointer to the interface structure containing the called function pointer.
331	* @param fPromiscuous Set if the adaptor is now in promiscuous mode. Clear if it is not.
332	* @thread EMT
333	*/
334	static DECLCALLBACK(void) drvIntNetSetPromiscuousMode(PPDMINETWORKCONNECTOR pInterface, bool fPromiscuous)
335	{
336	PDRVINTNET pThis = PDMINETWORKCONNECTOR_2_DRVINTNET(pInterface);
337	INTNETIFSETPROMISCUOUSMODEREQ Req;
338	Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
339	Req.Hdr.cbReq = sizeof(Req);
340	Req.pSession = NIL_RTR0PTR;
341	Req.hIf = pThis->hIf;
342	Req.fPromiscuous = fPromiscuous;
343	int rc = pThis->pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pThis->pDrvIns, VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE, &Req, sizeof(Req));
344	LogFlow(("drvIntNetSetPromiscuousMode: fPromiscuous=%RTbool\n", fPromiscuous));
345	AssertRC(rc);
346	}
347
348
349	/**
350	* Notification on link status changes.
351	*
352	* @param pInterface Pointer to the interface structure containing the called function pointer.
353	* @param enmLinkState The new link state.
354	* @thread EMT
355	*/
356	static DECLCALLBACK(void) drvIntNetNotifyLinkChanged(PPDMINETWORKCONNECTOR pInterface, PDMNETWORKLINKSTATE enmLinkState)
357	{
358	PDRVINTNET pThis = PDMINETWORKCONNECTOR_2_DRVINTNET(pInterface);
359	bool fLinkDown;
360	switch (enmLinkState)
361	{
362	case PDMNETWORKLINKSTATE_DOWN:
363	case PDMNETWORKLINKSTATE_DOWN_RESUME:
364	fLinkDown = true;
365	break;
366	default:
367	AssertMsgFailed(("enmLinkState=%d\n", enmLinkState));
368	case PDMNETWORKLINKSTATE_UP:
369	fLinkDown = false;
370	break;
371	}
372	LogFlow(("drvIntNetNotifyLinkChanged: enmLinkState=%d %d->%d\n", enmLinkState, pThis->fLinkDown, fLinkDown));
373	ASMAtomicXchgSize(&pThis->fLinkDown, fLinkDown);
374	}
375
376
377	/**
378	* Wait for space to become available up the driver/device chain.
379	*
380	* @returns VINF_SUCCESS if space is available.
381	* @returns VERR_STATE_CHANGED if the state changed.
382	* @returns VBox status code on other errors.
383	* @param pThis Pointer to the instance data.
384	*/
385	static int drvIntNetAsyncIoWaitForSpace(PDRVINTNET pThis)
386	{
387	LogFlow(("drvIntNetAsyncIoWaitForSpace:\n"));
388	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
389	int rc = pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, RT_INDEFINITE_WAIT);
390	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
391	LogFlow(("drvIntNetAsyncIoWaitForSpace: returns %Rrc\n", rc));
392	return rc;
393	}
394
395
396	/**
397	* Executes async I/O (RUNNING mode).
398	*
399	* @returns VERR_STATE_CHANGED if the state changed.
400	* @returns Appropriate VBox status code (error) on fatal error.
401	* @param pThis The driver instance data.
402	*/
403	static int drvIntNetAsyncIoRun(PDRVINTNET pThis)
404	{
405	PPDMDRVINS pDrvIns = pThis->pDrvIns;
406	LogFlow(("drvIntNetAsyncIoRun: pThis=%p\n", pThis));
407
408	/*
409	* The running loop - processing received data and waiting for more to arrive.
410	*/
411	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
412	PINTNETBUF pBuf = pThis->pBuf;
413	PINTNETRINGBUF pRingBuf = &pThis->pBuf->Recv;
414	for (;;)
415	{
416	/*
417	* Process the receive buffer.
418	*/
419	while (INTNETRingGetReadable(pRingBuf) > 0)
420	{
421	/*
422	* Check the state and then inspect the packet.
423	*/
424	if (pThis->enmState != ASYNCSTATE_RUNNING)
425	{
426	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
427	LogFlow(("drvIntNetAsyncIoRun: returns VERR_STATE_CHANGED (state changed - #0)\n"));
428	return VERR_STATE_CHANGED;
429	}
430
431	PINTNETHDR pHdr = (PINTNETHDR)((uintptr_t)pBuf + pRingBuf->offRead);
432	Log2(("pHdr=%p offRead=%#x: %.8Rhxs\n", pHdr, pRingBuf->offRead, pHdr));
433	if ( pHdr->u16Type == INTNETHDR_TYPE_FRAME
434	&& !pThis->fLinkDown)
435	{
436	/*
437	* Check if there is room for the frame and pass it up.
438	*/
439	size_t cbFrame = pHdr->cbFrame;
440	int rc = pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, 0);
441	if (rc == VINF_SUCCESS)
442	{
443	#ifdef LOG_ENABLED
444	uint64_t u64Now = RTTimeProgramNanoTS();
445	LogFlow(("drvIntNetAsyncIoRun: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
446	cbFrame, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
447	pThis->u64LastReceiveTS = u64Now;
448	Log2(("drvIntNetAsyncIoRun: cbFrame=%#x\n"
449	"%.*Rhxd\n",
450	cbFrame, cbFrame, INTNETHdrGetFramePtr(pHdr, pBuf)));
451	#endif
452	int rc = pThis->pPort->pfnReceive(pThis->pPort, INTNETHdrGetFramePtr(pHdr, pBuf), cbFrame);
453	AssertRC(rc);
454
455	/* skip to the next frame. */
456	INTNETRingSkipFrame(pBuf, pRingBuf);
457	}
458	else
459	{
460	/*
461	* Wait for sufficient space to become available and then retry.
462	*/
463	rc = drvIntNetAsyncIoWaitForSpace(pThis);
464	if (RT_FAILURE(rc))
465	{
466	if (rc == VERR_INTERRUPTED)
467	{
468	/*
469	* NIC is going down, likely because the VM is being reset. Skip the frame.
470	*/
471	AssertMsg(pHdr->u16Type == INTNETHDR_TYPE_FRAME, ("Unknown frame type %RX16! offRead=%#x\n",
472	pHdr->u16Type, pRingBuf->offRead));
473	INTNETRingSkipFrame(pBuf, pRingBuf);
474	}
475	else
476	{
477	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
478	LogFlow(("drvIntNetAsyncIoRun: returns %Rrc (wait-for-space)\n", rc));
479	return rc;
480	}
481	}
482	}
483	}
484	else
485	{
486	/*
487	* Link down or unknown frame - skip to the next frame.
488	*/
489	AssertMsg(pHdr->u16Type == INTNETHDR_TYPE_FRAME, ("Unknown frame type %RX16! offRead=%#x\n",
490	pHdr->u16Type, pRingBuf->offRead));
491	INTNETRingSkipFrame(pBuf, pRingBuf);
492	}
493	} /* while more received data */
494
495	/*
496	* Wait for data, checking the state before we block.
497	*/
498	if (pThis->enmState != ASYNCSTATE_RUNNING)
499	{
500	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
501	LogFlow(("drvIntNetAsyncIoRun: returns VINF_SUCCESS (state changed - #1)\n"));
502	return VERR_STATE_CHANGED;
503	}
504	INTNETIFWAITREQ WaitReq;
505	WaitReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
506	WaitReq.Hdr.cbReq = sizeof(WaitReq);
507	WaitReq.pSession = NIL_RTR0PTR;
508	WaitReq.hIf = pThis->hIf;
509	WaitReq.cMillies = 30000; /* 30s - don't wait forever, timeout now and then. */
510	STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
511	int rc = pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_WAIT, &WaitReq, sizeof(WaitReq));
512	if ( RT_FAILURE(rc)
513	&& rc != VERR_TIMEOUT
514	&& rc != VERR_INTERRUPTED)
515	{
516	LogFlow(("drvIntNetAsyncIoRun: returns %Rrc\n", rc));
517	return rc;
518	}
519	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
520	}
521	}
522
523
524	/**
525	* Asynchronous I/O thread for handling receive.
526	*
527	* @returns VINF_SUCCESS (ignored).
528	* @param ThreadSelf Thread handle.
529	* @param pvUser Pointer to a DRVINTNET structure.
530	*/
531	static DECLCALLBACK(int) drvIntNetAsyncIoThread(RTTHREAD ThreadSelf, void *pvUser)
532	{
533	PDRVINTNET pThis = (PDRVINTNET)pvUser;
534	LogFlow(("drvIntNetAsyncIoThread: pThis=%p\n", pThis));
535	STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
536
537	/*
538	* The main loop - acting on state.
539	*/
540	for (;;)
541	{
542	ASYNCSTATE enmState = pThis->enmState;
543	switch (enmState)
544	{
545	case ASYNCSTATE_SUSPENDED:
546	{
547	int rc = RTSemEventWait(pThis->EventSuspended, 30000);
548	if ( RT_FAILURE(rc)
549	&& rc != VERR_TIMEOUT)
550	{
551	LogFlow(("drvIntNetAsyncIoThread: returns %Rrc\n", rc));
552	return rc;
553	}
554	break;
555	}
556
557	case ASYNCSTATE_RUNNING:
558	{
559	int rc = drvIntNetAsyncIoRun(pThis);
560	if ( rc != VERR_STATE_CHANGED
561	&& RT_FAILURE(rc))
562	{
563	LogFlow(("drvIntNetAsyncIoThread: returns %Rrc\n", rc));
564	return rc;
565	}
566	break;
567	}
568
569	default:
570	AssertMsgFailed(("Invalid state %d\n", enmState));
571	case ASYNCSTATE_TERMINATE:
572	LogFlow(("drvIntNetAsyncIoThread: returns VINF_SUCCESS\n"));
573	return VINF_SUCCESS;
574	}
575	}
576	}
577
578
579	/**
580	* Queries an interface to the driver.
581	*
582	* @returns Pointer to interface.
583	* @returns NULL if the interface was not supported by the driver.
584	* @param pInterface Pointer to this interface structure.
585	* @param enmInterface The requested interface identification.
586	* @thread Any thread.
587	*/
588	static DECLCALLBACK(void *) drvIntNetQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
589	{
590	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
591	PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
592	switch (enmInterface)
593	{
594	case PDMINTERFACE_BASE:
595	return &pDrvIns->IBase;
596	case PDMINTERFACE_NETWORK_CONNECTOR:
597	return &pThis->INetworkConnector;
598	default:
599	return NULL;
600	}
601	}
602
603
604	/**
605	* Power Off notification.
606	*
607	* @param pDrvIns The driver instance.
608	*/
609	static DECLCALLBACK(void) drvIntNetPowerOff(PPDMDRVINS pDrvIns)
610	{
611	LogFlow(("drvIntNetPowerOff\n"));
612	PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
613	if (!pThis->fActivateEarlyDeactivateLate)
614	{
615	ASMAtomicXchgSize(&pThis->enmState, ASYNCSTATE_SUSPENDED);
616	drvIntNetSetActive(pThis, false /* fActive */);
617	}
618	}
619
620
621	/**
622	* Resume notification.
623	*
624	* @param pDrvIns The driver instance.
625	*/
626	static DECLCALLBACK(void) drvIntNetResume(PPDMDRVINS pDrvIns)
627	{
628	LogFlow(("drvIntNetPowerResume\n"));
629	PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
630	if (!pThis->fActivateEarlyDeactivateLate)
631	{
632	ASMAtomicXchgSize(&pThis->enmState, ASYNCSTATE_RUNNING);
633	RTSemEventSignal(pThis->EventSuspended);
634	drvIntNetUpdateMacAddress(pThis); /* (could be a state restore) */
635	drvIntNetSetActive(pThis, true /* fActive */);
636	}
637	}
638
639
640	/**
641	* Suspend notification.
642	*
643	* @param pDrvIns The driver instance.
644	*/
645	static DECLCALLBACK(void) drvIntNetSuspend(PPDMDRVINS pDrvIns)
646	{
647	LogFlow(("drvIntNetPowerSuspend\n"));
648	PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
649	if (!pThis->fActivateEarlyDeactivateLate)
650	{
651	ASMAtomicXchgSize(&pThis->enmState, ASYNCSTATE_SUSPENDED);
652	drvIntNetSetActive(pThis, false /* fActive */);
653	}
654	}
655
656
657	/**
658	* Power On notification.
659	*
660	* @param pDrvIns The driver instance.
661	*/
662	static DECLCALLBACK(void) drvIntNetPowerOn(PPDMDRVINS pDrvIns)
663	{
664	LogFlow(("drvIntNetPowerOn\n"));
665	PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
666	if (!pThis->fActivateEarlyDeactivateLate)
667	{
668	ASMAtomicXchgSize(&pThis->enmState, ASYNCSTATE_RUNNING);
669	RTSemEventSignal(pThis->EventSuspended);
670	drvIntNetUpdateMacAddress(pThis);
671	drvIntNetSetActive(pThis, true /* fActive */);
672	}
673	}
674
675
676	/**
677	* Destruct a driver instance.
678	*
679	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
680	* resources can be freed correctly.
681	*
682	* @param pDrvIns The driver instance data.
683	*/
684	static DECLCALLBACK(void) drvIntNetDestruct(PPDMDRVINS pDrvIns)
685	{
686	LogFlow(("drvIntNetDestruct\n"));
687	PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
688
689	/*
690	* Indicate to the thread that it's time to quit.
691	*/
692	ASMAtomicXchgSize(&pThis->enmState, ASYNCSTATE_TERMINATE);
693	ASMAtomicXchgSize(&pThis->fLinkDown, true);
694	RTSEMEVENT EventSuspended = pThis->EventSuspended;
695	pThis->EventSuspended = NIL_RTSEMEVENT;
696
697	/*
698	* Close the interface
699	*/
700	if (pThis->hIf != INTNET_HANDLE_INVALID)
701	{
702	INTNETIFCLOSEREQ CloseReq;
703	CloseReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
704	CloseReq.Hdr.cbReq = sizeof(CloseReq);
705	CloseReq.pSession = NIL_RTR0PTR;
706	CloseReq.hIf = pThis->hIf;
707	pThis->hIf = INTNET_HANDLE_INVALID;
708	int rc = pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_CLOSE, &CloseReq, sizeof(CloseReq));
709	AssertRC(rc);
710	}
711
712	/*
713	* Wait for the thread to terminate.
714	*/
715	if (pThis->Thread != NIL_RTTHREAD)
716	{
717	if (EventSuspended != NIL_RTSEMEVENT)
718	RTSemEventSignal(EventSuspended);
719	int rc = RTThreadWait(pThis->Thread, 5000, NULL);
720	AssertRC(rc);
721	pThis->Thread = NIL_RTTHREAD;
722	}
723
724	/*
725	* Destroy the semaphores.
726	*/
727	if (EventSuspended != NIL_RTSEMEVENT)
728	RTSemEventDestroy(EventSuspended);
729	}
730
731
732	/**
733	* Construct a TAP network transport driver instance.
734	*
735	* @returns VBox status.
736	* @param pDrvIns The driver instance data.
737	* If the registration structure is needed, pDrvIns->pDrvReg points to it.
738	* @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
739	* of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
740	* iInstance it's expected to be used a bit in this function.
741	*/
742	static DECLCALLBACK(int) drvIntNetConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
743	{
744	PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
745	bool f;
746
747	/*
748	* Init the static parts.
749	*/
750	pThis->pDrvIns = pDrvIns;
751	pThis->hIf = INTNET_HANDLE_INVALID;
752	pThis->Thread = NIL_RTTHREAD;
753	pThis->EventSuspended = NIL_RTSEMEVENT;
754	pThis->enmState = ASYNCSTATE_SUSPENDED;
755	pThis->fActivateEarlyDeactivateLate = false;
756	/* IBase */
757	pDrvIns->IBase.pfnQueryInterface = drvIntNetQueryInterface;
758	/* INetwork */
759	pThis->INetworkConnector.pfnSend = drvIntNetSend;
760	pThis->INetworkConnector.pfnSetPromiscuousMode = drvIntNetSetPromiscuousMode;
761	pThis->INetworkConnector.pfnNotifyLinkChanged = drvIntNetNotifyLinkChanged;
762
763	/*
764	* Validate the config.
765	*/
766	if (!CFGMR3AreValuesValid(pCfgHandle,
767	"Network\0"
768	"Trunk\0"
769	"TrunkType\0"
770	"ReceiveBufferSize\0"
771	"SendBufferSize\0"
772	"RestrictAccess\0"
773	"SharedMacOnWire\0"
774	"IgnoreAllPromisc\0"
775	"QuietlyIgnoreAllPromisc\0"
776	"IgnoreClientPromisc\0"
777	"QuietlyIgnoreClientPromisc\0"
778	"IgnoreTrunkWirePromisc\0"
779	"QuietlyIgnoreTrunkWirePromisc\0"
780	"IgnoreTrunkHostPromisc\0"
781	"QuietlyIgnoreTrunkHostPromisc\0"
782	"IsService\0"))
783	return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;
784
785	/*
786	* Check that no-one is attached to us.
787	*/
788	int rc = pDrvIns->pDrvHlp->pfnAttach(pDrvIns, NULL);
789	if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
790	{
791	AssertMsgFailed(("Configuration error: Cannot attach drivers to the TAP driver!\n"));
792	return VERR_PDM_DRVINS_NO_ATTACH;
793	}
794
795	/*
796	* Query the network port interface.
797	*/
798	pThis->pPort = (PPDMINETWORKPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_NETWORK_PORT);
799	if (!pThis->pPort)
800	{
801	AssertMsgFailed(("Configuration error: the above device/driver didn't export the network port interface!\n"));
802	return VERR_PDM_MISSING_INTERFACE_ABOVE;
803	}
804	pThis->pConfigIf = (PPDMINETWORKCONFIG)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_NETWORK_CONFIG);
805
806	/*
807	* Read the configuration.
808	*/
809	INTNETOPENREQ OpenReq;
810	memset(&OpenReq, 0, sizeof(OpenReq));
811	OpenReq.Hdr.cbReq = sizeof(OpenReq);
812	OpenReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
813	OpenReq.pSession = NIL_RTR0PTR;
814
815	/** @cfgm{Network, string}
816	* The name of the internal network to connect to.
817	*/
818	rc = CFGMR3QueryString(pCfgHandle, "Network", OpenReq.szNetwork, sizeof(OpenReq.szNetwork));
819	if (RT_FAILURE(rc))
820	return PDMDRV_SET_ERROR(pDrvIns, rc,
821	N_("Configuration error: Failed to get the \"Network\" value"));
822	strcpy(pThis->szNetwork, OpenReq.szNetwork);
823
824	/** @cfgm{TrunkType, uint32_t, kIntNetTrunkType_None}
825	* The trunk connection type see INTNETTRUNKTYPE.
826	*/
827	uint32_t u32TrunkType;
828	rc = CFGMR3QueryU32(pCfgHandle, "TrunkType", &u32TrunkType);
829	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
830	u32TrunkType = kIntNetTrunkType_None;
831	else if (RT_FAILURE(rc))
832	return PDMDRV_SET_ERROR(pDrvIns, rc,
833	N_("Configuration error: Failed to get the \"TrunkType\" value"));
834	OpenReq.enmTrunkType = (INTNETTRUNKTYPE)u32TrunkType;
835
836	/** @cfgm{Trunk, string, ""}
837	* The name of the trunk connection.
838	*/
839	rc = CFGMR3QueryString(pCfgHandle, "Trunk", OpenReq.szTrunk, sizeof(OpenReq.szTrunk));
840	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
841	OpenReq.szTrunk[0] = '\0';
842	else if (RT_FAILURE(rc))
843	return PDMDRV_SET_ERROR(pDrvIns, rc,
844	N_("Configuration error: Failed to get the \"Trunk\" value"));
845
846	/** @cfgm{RestrictAccess, boolean, true}
847	* Whether to restrict the access to the network or if it should be public. Everyone on
848	* the computer can connect to a public network. Don't change this.
849	*/
850	bool fRestrictAccess;
851	rc = CFGMR3QueryBool(pCfgHandle, "RestrictAccess", &fRestrictAccess);
852	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
853	fRestrictAccess = true;
854	else if (RT_FAILURE(rc))
855	return PDMDRV_SET_ERROR(pDrvIns, rc,
856	N_("Configuration error: Failed to get the \"RestrictAccess\" value"));
857	OpenReq.fFlags = fRestrictAccess ? 0 : INTNET_OPEN_FLAGS_PUBLIC;
858
859	/** @cfgm{IgnoreAllPromisc, boolean, false}
860	* When set all request for operating any interface or trunk in promiscuous
861	* mode will be ignored. */
862	rc = CFGMR3QueryBoolDef(pCfgHandle, "IgnoreAllPromisc", &f, false);
863	if (RT_FAILURE(rc))
864	return PDMDRV_SET_ERROR(pDrvIns, rc,
865	N_("Configuration error: Failed to get the \"IgnoreAllPromisc\" value"));
866	if (f)
867	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_IGNORE_PROMISC;
868
869	/** @cfgm{QuietlyIgnoreAllPromisc, boolean, false}
870	* When set all request for operating any interface or trunk in promiscuous
871	* mode will be ignored. This differs from IgnoreAllPromisc in that clients
872	* won't get VERR_INTNET_INCOMPATIBLE_FLAGS. */
873	rc = CFGMR3QueryBoolDef(pCfgHandle, "QuietlyIgnoreAllPromisc", &f, false);
874	if (RT_FAILURE(rc))
875	return PDMDRV_SET_ERROR(pDrvIns, rc,
876	N_("Configuration error: Failed to get the \"QuietlyIgnoreAllPromisc\" value"));
877	if (f)
878	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_QUIETLY_IGNORE_PROMISC;
879
880	/** @cfgm{IgnoreClientPromisc, boolean, false}
881	* When set all request for operating any non-trunk interface in promiscuous
882	* mode will be ignored. */
883	rc = CFGMR3QueryBoolDef(pCfgHandle, "IgnoreClientPromisc", &f, false);
884	if (RT_FAILURE(rc))
885	return PDMDRV_SET_ERROR(pDrvIns, rc,
886	N_("Configuration error: Failed to get the \"IgnoreClientPromisc\" value"));
887	if (f)
888	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_IGNORE_PROMISC; /** @todo add special flag for this. */
889
890	/** @cfgm{QuietlyIgnoreClientPromisc, boolean, false}
891	* When set all request for operating any non-trunk interface promiscuous mode
892	* will be ignored. This differs from IgnoreClientPromisc in that clients won't
893	* get VERR_INTNET_INCOMPATIBLE_FLAGS. */
894	rc = CFGMR3QueryBoolDef(pCfgHandle, "QuietlyIgnoreClientPromisc", &f, false);
895	if (RT_FAILURE(rc))
896	return PDMDRV_SET_ERROR(pDrvIns, rc,
897	N_("Configuration error: Failed to get the \"QuietlyIgnoreClientPromisc\" value"));
898	if (f)
899	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_QUIETLY_IGNORE_PROMISC; /** @todo add special flag for this. */
900
901	/** @cfgm{IgnoreTrunkWirePromisc, boolean, false}
902	* When set all request for operating the trunk-wire connection in promiscuous
903	* mode will be ignored. */
904	rc = CFGMR3QueryBoolDef(pCfgHandle, "IgnoreTrunkWirePromisc", &f, false);
905	if (RT_FAILURE(rc))
906	return PDMDRV_SET_ERROR(pDrvIns, rc,
907	N_("Configuration error: Failed to get the \"IgnoreTrunkWirePromisc\" value"));
908	if (f)
909	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_IGNORE_PROMISC_TRUNK_WIRE;
910
911	/** @cfgm{QuietlyIgnoreTrunkWirePromisc, boolean, false}
912	* When set all request for operating any trunk-wire connection promiscuous mode
913	* will be ignored. This differs from IgnoreTrunkWirePromisc in that clients
914	* won't get VERR_INTNET_INCOMPATIBLE_FLAGS. */
915	rc = CFGMR3QueryBoolDef(pCfgHandle, "QuietlyIgnoreTrunkWirePromisc", &f, false);
916	if (RT_FAILURE(rc))
917	return PDMDRV_SET_ERROR(pDrvIns, rc,
918	N_("Configuration error: Failed to get the \"QuietlyIgnoreTrunkWirePromisc\" value"));
919	if (f)
920	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_QUIETLY_IGNORE_PROMISC_TRUNK_WIRE;
921
922	/** @cfgm{IgnoreTrunkHostPromisc, boolean, false}
923	* When set all request for operating the trunk-host connection in promiscuous
924	* mode will be ignored. */
925	rc = CFGMR3QueryBoolDef(pCfgHandle, "IgnoreTrunkHostPromisc", &f, false);
926	if (RT_FAILURE(rc))
927	return PDMDRV_SET_ERROR(pDrvIns, rc,
928	N_("Configuration error: Failed to get the \"IgnoreTrunkHostPromisc\" value"));
929	if (f)
930	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_IGNORE_PROMISC_TRUNK_HOST;
931
932	/** @cfgm{QuietlyIgnoreTrunkHostPromisc, boolean, false}
933	* When set all request for operating any trunk-host connection promiscuous mode
934	* will be ignored. This differs from IgnoreTrunkHostPromisc in that clients
935	* won't get VERR_INTNET_INCOMPATIBLE_FLAGS. */
936	rc = CFGMR3QueryBoolDef(pCfgHandle, "QuietlyIgnoreTrunkHostPromisc", &f, false);
937	if (RT_FAILURE(rc))
938	return PDMDRV_SET_ERROR(pDrvIns, rc,
939	N_("Configuration error: Failed to get the \"QuietlyIgnoreTrunkHostPromisc\" value"));
940	if (f)
941	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_QUIETLY_IGNORE_PROMISC_TRUNK_HOST;
942
943	/** @todo flags for not sending to the host and for setting the trunk-wire
944	* connection in promiscuous mode. */
945
946
947	/** @cfgm{SharedMacOnWire, boolean, false}
948	* Whether to shared the MAC address of the host interface when using the wire. When
949	* attaching to a wireless NIC this option is usally a requirement.
950	*/
951	bool fSharedMacOnWire;
952	rc = CFGMR3QueryBoolDef(pCfgHandle, "SharedMacOnWire", &fSharedMacOnWire, false);
953	if (RT_FAILURE(rc))
954	return PDMDRV_SET_ERROR(pDrvIns, rc,
955	N_("Configuration error: Failed to get the \"SharedMacOnWire\" value"));
956	if (fSharedMacOnWire)
957	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE;
958
959	/** @cfgm{ReceiveBufferSize, uint32_t, 218 KB}
960	* The size of the receive buffer.
961	*/
962	rc = CFGMR3QueryU32(pCfgHandle, "ReceiveBufferSize", &OpenReq.cbRecv);
963	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
964	OpenReq.cbRecv = 218 * _1K ;
965	else if (RT_FAILURE(rc))
966	return PDMDRV_SET_ERROR(pDrvIns, rc,
967	N_("Configuration error: Failed to get the \"ReceiveBufferSize\" value"));
968
969	/** @cfgm{SendBufferSize, uint32_t, 36 KB}
970	* The size of the send (transmit) buffer.
971	* This should be more than twice the size of the larges frame size because
972	* the ring buffer is very simple and doesn't support splitting up frames
973	* nor inserting padding. So, if this is too close to the frame size the
974	* header will fragment the buffer such that the frame won't fit on either
975	* side of it and the code will get very upset about it all.
976	*/
977	rc = CFGMR3QueryU32(pCfgHandle, "SendBufferSize", &OpenReq.cbSend);
978	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
979	OpenReq.cbSend = 36*_1K;
980	else if (RT_FAILURE(rc))
981	return PDMDRV_SET_ERROR(pDrvIns, rc,
982	N_("Configuration error: Failed to get the \"SendBufferSize\" value"));
983	if (OpenReq.cbSend < 32)
984	return PDMDRV_SET_ERROR(pDrvIns, rc,
985	N_("Configuration error: The \"SendBufferSize\" value is too small"));
986	if (OpenReq.cbSend < 16384*2 + 64)
987	LogRel(("DrvIntNet: Warning! SendBufferSize=%u, Recommended minimum size %u butes.\n", OpenReq.cbSend, 16384*2 + 64));
988
989	/** @cfgm{IsService, boolean, true}
990	* This alterns the way the thread is suspended and resumed. When it's being used by
991	* a service such as LWIP/iSCSI it shouldn't suspend immediately like for a NIC.
992	*/
993	rc = CFGMR3QueryBool(pCfgHandle, "IsService", &pThis->fActivateEarlyDeactivateLate);
994	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
995	pThis->fActivateEarlyDeactivateLate = false;
996	else if (RT_FAILURE(rc))
997	return PDMDRV_SET_ERROR(pDrvIns, rc,
998	N_("Configuration error: Failed to get the \"IsService\" value"));
999
1000	LogRel(("IntNet#%u: szNetwork={%s} enmTrunkType=%d szTrunk={%s} fFlags=%#x cbRecv=%u cbSend=%u\n",
1001	pDrvIns->iInstance, OpenReq.szNetwork, OpenReq.enmTrunkType, OpenReq.szTrunk, OpenReq.fFlags,
1002	OpenReq.cbRecv, OpenReq.cbSend));
1003
1004	#ifdef RT_OS_DARWIN
1005	/* Temporary hack: attach to a network with the name 'if=en0' and you're hitting the wire. */
1006	if ( !OpenReq.szTrunk[0]
1007	&& OpenReq.enmTrunkType == kIntNetTrunkType_None
1008	&& !strncmp(pThis->szNetwork, "if=en", sizeof("if=en") - 1)
1009	&& RT_C_IS_DIGIT(pThis->szNetwork[sizeof("if=en") - 1])
1010	&& !pThis->szNetwork[sizeof("if=en")])
1011	{
1012	OpenReq.enmTrunkType = kIntNetTrunkType_NetFlt;
1013	strcpy(OpenReq.szTrunk, &pThis->szNetwork[sizeof("if=") - 1]);
1014	}
1015	/* Temporary hack: attach to a network with the name 'wif=en0' and you're on the air. */
1016	if ( !OpenReq.szTrunk[0]
1017	&& OpenReq.enmTrunkType == kIntNetTrunkType_None
1018	&& !strncmp(pThis->szNetwork, "wif=en", sizeof("wif=en") - 1)
1019	&& RT_C_IS_DIGIT(pThis->szNetwork[sizeof("wif=en") - 1])
1020	&& !pThis->szNetwork[sizeof("wif=en")])
1021	{
1022	OpenReq.enmTrunkType = kIntNetTrunkType_NetFlt;
1023	OpenReq.fFlags \|= INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE;
1024	strcpy(OpenReq.szTrunk, &pThis->szNetwork[sizeof("wif=") - 1]);
1025	}
1026
1027	#elif defined(RT_OS_WINDOWS) && defined(VBOX_WITH_NETFLT)
1028	if (OpenReq.enmTrunkType == kIntNetTrunkType_NetFlt)
1029	{
1030	# ifndef VBOX_NETFLT_ONDEMAND_BIND
1031	/*
1032	* We have a ndis filter driver started on system boot before the VBoxDrv,
1033	* tell the filter driver to init VBoxNetFlt functionality.
1034	*/
1035	rc = drvIntNetWinConstruct(pDrvIns, pCfgHandle);
1036	AssertLogRelMsgRCReturn(rc, ("drvIntNetWinConstruct failed, rc=%Rrc", rc), rc);
1037	# endif
1038
1039	/*
1040	* <Describe what this does here or/and in the function docs of drvIntNetWinIfGuidToBindName>.
1041	*/
1042	char szBindName[INTNET_MAX_TRUNK_NAME];
1043	rc = drvIntNetWinIfGuidToBindName(OpenReq.szTrunk, szBindName, INTNET_MAX_TRUNK_NAME);
1044	AssertLogRelMsgRCReturn(rc, ("drvIntNetWinIfGuidToBindName failed, rc=%Rrc", rc), rc);
1045	strcpy(OpenReq.szTrunk, szBindName);
1046	}
1047	#endif /* WINDOWS && NETFLT */
1048
1049	/*
1050	* Create the event semaphores
1051	*/
1052	rc = RTSemEventCreate(&pThis->EventSuspended);
1053	if (RT_FAILURE(rc))
1054	return rc;
1055
1056	/*
1057	* Create the interface.
1058	*/
1059	OpenReq.hIf = INTNET_HANDLE_INVALID;
1060	rc = pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_OPEN, &OpenReq, sizeof(OpenReq));
1061	if (RT_FAILURE(rc))
1062	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
1063	N_("Failed to open/create the internal network '%s'"), pThis->szNetwork);
1064	AssertRelease(OpenReq.hIf != INTNET_HANDLE_INVALID);
1065	pThis->hIf = OpenReq.hIf;
1066	Log(("IntNet%d: hIf=%RX32 '%s'\n", pDrvIns->iInstance, pThis->hIf, pThis->szNetwork));
1067
1068	/*
1069	* Get default buffer.
1070	*/
1071	INTNETIFGETRING3BUFFERREQ GetRing3BufferReq;
1072	GetRing3BufferReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1073	GetRing3BufferReq.Hdr.cbReq = sizeof(GetRing3BufferReq);
1074	GetRing3BufferReq.pSession = NIL_RTR0PTR;
1075	GetRing3BufferReq.hIf = pThis->hIf;
1076	GetRing3BufferReq.pRing3Buf = NULL;
1077	rc = pDrvIns->pDrvHlp->pfnSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_GET_RING3_BUFFER, &GetRing3BufferReq, sizeof(GetRing3BufferReq));
1078	if (RT_FAILURE(rc))
1079	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
1080	N_("Failed to get ring-3 buffer for the newly created interface to '%s'"), pThis->szNetwork);
1081	AssertRelease(VALID_PTR(GetRing3BufferReq.pRing3Buf));
1082	pThis->pBuf = GetRing3BufferReq.pRing3Buf;
1083
1084	/*
1085	* Create the async I/O thread.
1086	* Note! Using a PDM thread here doesn't fit with the IsService=true operation.
1087	*/
1088	rc = RTThreadCreate(&pThis->Thread, drvIntNetAsyncIoThread, pThis, _128K, RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "INTNET");
1089	if (RT_FAILURE(rc))
1090	{
1091	AssertRC(rc);
1092	return rc;
1093	}
1094
1095	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->pBuf->cbStatRecv, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of received bytes.", "/Net/IntNet%d/Bytes/Received", pDrvIns->iInstance);
1096	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->pBuf->cbStatSend, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent bytes.", "/Net/IntNet%d/Bytes/Sent", pDrvIns->iInstance);
1097	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->pBuf->cStatRecvs, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of received packets.", "/Net/IntNet%d/Packets/Received", pDrvIns->iInstance);
1098	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->pBuf->cStatSends, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent packets.", "/Net/IntNet%d/Packets/Sent", pDrvIns->iInstance);
1099	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->pBuf->cStatLost, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent packets.", "/Net/IntNet%d/Packets/Lost", pDrvIns->iInstance);
1100	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->pBuf->cStatYieldsNok, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of times yielding didn't help fix an overflow.", "/Net/IntNet%d/YieldNok", pDrvIns->iInstance);
1101	#ifdef VBOX_WITH_STATISTICS
1102	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet receive runs.", "/Net/IntNet%d/Receive", pDrvIns->iInstance);
1103	PDMDrvHlpSTAMRegisterF(pDrvIns, &pThis->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet transmit runs.", "/Net/IntNet%d/Transmit", pDrvIns->iInstance);
1104	#endif
1105
1106	/*
1107	* Activate data transmission as early as possible
1108	*/
1109	if (pThis->fActivateEarlyDeactivateLate)
1110	{
1111	ASMAtomicXchgSize(&pThis->enmState, ASYNCSTATE_RUNNING);
1112	RTSemEventSignal(pThis->EventSuspended);
1113	drvIntNetUpdateMacAddress(pThis);
1114	drvIntNetSetActive(pThis, true /* fActive */);
1115	}
1116
1117	return rc;
1118	}
1119
1120
1121	/**
1122	* Internal networking transport driver registration record.
1123	*/
1124	const PDMDRVREG g_DrvIntNet =
1125	{
1126	/* u32Version */
1127	PDM_DRVREG_VERSION,
1128	/* szDriverName */
1129	"IntNet",
1130	/* pszDescription */
1131	"Internal Networking Transport Driver",
1132	/* fFlags */
1133	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1134	/* fClass. */
1135	PDM_DRVREG_CLASS_NETWORK,
1136	/* cMaxInstances */
1137	~0,
1138	/* cbInstance */
1139	sizeof(DRVINTNET),
1140	/* pfnConstruct */
1141	drvIntNetConstruct,
1142	/* pfnDestruct */
1143	drvIntNetDestruct,
1144	/* pfnIOCtl */
1145	NULL,
1146	/* pfnPowerOn */
1147	drvIntNetPowerOn,
1148	/* pfnReset */
1149	NULL,
1150	/* pfnSuspend */
1151	drvIntNetSuspend,
1152	/* pfnResume */
1153	drvIntNetResume,
1154	/* pfnDetach */
1155	NULL,
1156	/* pfnPowerOff */
1157	drvIntNetPowerOff
1158	};
1159

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source: vbox/trunk/src/VBox/Devices/Network/DrvIntNet.cpp@ 15953

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