VBoxNetAdp.c@ 28666

Last change on this file since 28666 was 28666, checked in by vboxsync, 15 years ago
SrvIntNet,VBoxNetFlt: Changing from getting to reporting (VBoxNetFlt reports stuff to SrvIntNet).
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 35.2 KB

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1	/* $Id: VBoxNetAdp.c 28666 2010-04-23 17:25:58Z vboxsync $ */
2	/** @file
3	* VBoxNetAdp - Virtual Network Adapter Driver (Host), Common Code.
4	*/
5
6	/*
7	* Copyright (C) 2008-2009 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	/** @page pg_netadp VBoxNetAdp - Network Adapter
23	*
24	* This is a kernel module that creates a virtual interface that can be attached
25	* to an internal network.
26	*
27	* In the big picture we're one of the three trunk interface on the internal
28	* network, the one named "TAP Interface": @image html Networking_Overview.gif
29	*
30	*/
31
32	/*******************************************************************************
33	* Header Files *
34	*******************************************************************************/
35	#define LOG_GROUP LOG_GROUP_NET_ADP_DRV
36	#include "VBoxNetAdpInternal.h"
37
38	#include <VBox/log.h>
39	#include <VBox/err.h>
40	#include <iprt/string.h>
41
42	#ifdef VBOXANETADP_DO_NOT_USE_NETFLT
43
44	#include <VBox/sup.h>
45	#include <iprt/assert.h>
46	#include <iprt/spinlock.h>
47	#include <iprt/uuid.h>
48	#include <VBox/version.h>
49
50	/** r=bird: why is this here in the agnositc code? */
51	#ifdef RT_OS_DARWIN
52	# include <net/ethernet.h>
53	# include <net/if_ether.h>
54	# include <net/if_types.h>
55	# include <sys/socket.h>
56	# include <net/if.h>
57	# include <net/if_dl.h>
58	# include <sys/errno.h>
59	# include <sys/param.h>
60	#endif
61
62
63	/*******************************************************************************
64	* Defined Constants And Macros *
65	*******************************************************************************/
66	#define IFPORT_2_VBOXNETADP(pIfPort) \
67	( (PVBOXNETADP)((uint8_t *)pIfPort - RT_OFFSETOF(VBOXNETADP, MyPort)) )
68
69
70	AssertCompileMemberSize(VBOXNETADP, enmState, sizeof(uint32_t));
71
72	/**
73	* Gets the enmState member atomically.
74	*
75	* Used for all reads.
76	*
77	* @returns The enmState value.
78	* @param pThis The instance.
79	*/
80	DECLINLINE(VBOXNETADPSTATE) vboxNetAdpGetState(PVBOXNETADP pThis)
81	{
82	return (VBOXNETADPSTATE)ASMAtomicUoReadU32((uint32_t volatile *)&pThis->enmState);
83	}
84
85
86	/**
87	* Sets the enmState member atomically.
88	*
89	* Used for all updates.
90	*
91	* @param pThis The instance.
92	* @param enmNewState The new value.
93	*/
94	DECLINLINE(void) vboxNetAdpSetState(PVBOXNETADP pThis, VBOXNETADPSTATE enmNewState)
95	{
96	Log(("vboxNetAdpSetState: pThis=%p, state change: %d -> %d.\n", pThis, vboxNetAdpGetState(pThis), enmNewState));
97	ASMAtomicWriteU32((uint32_t volatile *)&pThis->enmState, enmNewState);
98	}
99
100
101	/**
102	* Sets the enmState member atomically after first acquiring the spinlock.
103	*
104	* Used for all updates.
105	*
106	* @param pThis The instance.
107	* @param enmNewState The new value.
108	*/
109	DECLINLINE(void) vboxNetAdpSetStateWithLock(PVBOXNETADP pThis, VBOXNETADPSTATE enmNewState)
110	{
111	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
112	Log(("vboxNetAdpSetStateWithLock: pThis=%p, state=%d.\n", pThis, enmNewState));
113	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
114	vboxNetAdpSetState(pThis, enmNewState);
115	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
116	}
117
118
119	/**
120	* Gets the enmState member with locking.
121	*
122	* Used for all reads.
123	*
124	* @returns The enmState value.
125	* @param pThis The instance.
126	*/
127	DECLINLINE(VBOXNETADPSTATE) vboxNetAdpGetStateWithLock(PVBOXNETADP pThis)
128	{
129	VBOXNETADPSTATE enmState;
130	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
131	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
132	enmState = vboxNetAdpGetState(pThis);
133	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
134	Log(("vboxNetAdpGetStateWithLock: pThis=%p, state=%d.\n", pThis, enmState));
135	return enmState;
136	}
137
138
139	/**
140	* Checks and sets the enmState member atomically.
141	*
142	* Used for all updates.
143	*
144	* @returns true if the state has been changed.
145	* @param pThis The instance.
146	* @param enmNewState The new value.
147	*/
148	DECLINLINE(bool) vboxNetAdpCheckAndSetState(PVBOXNETADP pThis, VBOXNETADPSTATE enmOldState, VBOXNETADPSTATE enmNewState)
149	{
150	VBOXNETADPSTATE enmActualState;
151	bool fRc = true; /* be optimistic */
152	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
153
154	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
155	enmActualState = vboxNetAdpGetState(pThis); /** @todo r=bird: ASMAtomicCmpXchgU32()*/
156	if (enmActualState == enmOldState)
157	vboxNetAdpSetState(pThis, enmNewState);
158	else
159	fRc = false;
160	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
161
162	if (fRc)
163	Log(("vboxNetAdpCheckAndSetState: pThis=%p, state changed: %d -> %d.\n", pThis, enmOldState, enmNewState));
164	else
165	Log(("vboxNetAdpCheckAndSetState: pThis=%p, no state change: %d != %d (expected).\n", pThis, enmActualState, enmOldState));
166	return fRc;
167	}
168
169
170	/**
171	* Finds a instance by its name, the caller does the locking.
172	*
173	* @returns Pointer to the instance by the given name. NULL if not found.
174	* @param pGlobals The globals.
175	* @param pszName The name of the instance.
176	*/
177	static PVBOXNETADP vboxNetAdpFind(PVBOXNETADPGLOBALS pGlobals, const char *pszName)
178	{
179	unsigned i;
180
181	for (i = 0; i < RT_ELEMENTS(pGlobals->aAdapters); i++)
182	{
183	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
184	PVBOXNETADP pThis = &pGlobals->aAdapters[i];
185	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
186	if ( vboxNetAdpGetState(pThis)
187	&& !strcmp(pThis->szName, pszName))
188	{
189	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
190	return pThis;
191	}
192	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
193	}
194	return NULL;
195	}
196
197
198	/**
199	* Releases a reference to the specified instance.
200	*
201	* @param pThis The instance.
202	* @param fBusy Whether the busy counter should be decremented too.
203	*/
204	DECLHIDDEN(void) vboxNetAdpRelease(PVBOXNETADP pThis)
205	{
206	uint32_t cRefs;
207
208	/*
209	* Paranoid Android.
210	*/
211	AssertPtr(pThis);
212	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
213	Assert(pThis->MyPort.u32VersionEnd == INTNETTRUNKIFPORT_VERSION);
214	Assert(vboxNetAdpGetState(pThis) > kVBoxNetAdpState_Invalid);
215	AssertPtr(pThis->pGlobals);
216	Assert(pThis->hEventIdle != NIL_RTSEMEVENT);
217	Assert(pThis->hSpinlock != NIL_RTSPINLOCK);
218	Assert(pThis->szName[0]);
219
220	/*
221	* The object reference counting.
222	*/
223	cRefs = ASMAtomicDecU32(&pThis->cRefs);
224	Assert(cRefs < UINT32_MAX / 2);
225	}
226
227
228	/**
229	* Decrements the busy counter and does idle wakeup.
230	*
231	* @param pThis The instance.
232	*/
233	DECLHIDDEN(void) vboxNetAdpIdle(PVBOXNETADP pThis)
234	{
235	uint32_t cBusy;
236
237	/*
238	* Paranoid Android.
239	*/
240	AssertPtr(pThis);
241	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
242	Assert(pThis->MyPort.u32VersionEnd == INTNETTRUNKIFPORT_VERSION);
243	Assert(vboxNetAdpGetState(pThis) >= kVBoxNetAdpState_Connected);
244	AssertPtr(pThis->pGlobals);
245	Assert(pThis->hEventIdle != NIL_RTSEMEVENT);
246
247	cBusy = ASMAtomicDecU32(&pThis->cBusy);
248	if (!cBusy)
249	{
250	int rc = RTSemEventSignal(pThis->hEventIdle);
251	AssertRC(rc);
252	}
253	else
254	Assert(cBusy < UINT32_MAX / 2);
255	}
256
257
258	/**
259	* Retains a reference to the specified instance.
260	*
261	* @param pThis The instance.
262	*/
263	DECLHIDDEN(void) vboxNetAdpRetain(PVBOXNETADP pThis)
264	{
265	uint32_t cRefs;
266
267	/*
268	* Paranoid Android.
269	*/
270	AssertPtr(pThis);
271	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
272	Assert(pThis->MyPort.u32VersionEnd == INTNETTRUNKIFPORT_VERSION);
273	Assert(vboxNetAdpGetState(pThis) > kVBoxNetAdpState_Invalid);
274	AssertPtr(pThis->pGlobals);
275	Assert(pThis->hEventIdle != NIL_RTSEMEVENT);
276	Assert(pThis->hSpinlock != NIL_RTSPINLOCK);
277	Assert(pThis->szName[0]);
278
279	/*
280	* Retain the object.
281	*/
282	cRefs = ASMAtomicIncU32(&pThis->cRefs);
283	Assert(cRefs > 1 && cRefs < UINT32_MAX / 2);
284
285	NOREF(cRefs);
286	}
287
288
289	/**
290	* Increments busy counter.
291	*
292	* @param pThis The instance.
293	*/
294	DECLHIDDEN(void) vboxNetAdpBusy(PVBOXNETADP pThis)
295	{
296	uint32_t cBusy;
297
298	/*
299	* Are we vigilant enough?
300	*/
301	AssertPtr(pThis);
302	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
303	Assert(pThis->MyPort.u32VersionEnd == INTNETTRUNKIFPORT_VERSION);
304	Assert(vboxNetAdpGetState(pThis) >= kVBoxNetAdpState_Connected);
305	AssertPtr(pThis->pGlobals);
306	Assert(pThis->hEventIdle != NIL_RTSEMEVENT);
307	cBusy = ASMAtomicIncU32(&pThis->cBusy);
308	Assert(cBusy > 0 && cBusy < UINT32_MAX / 2);
309
310	NOREF(cBusy);
311	}
312
313
314	/**
315	* Generate a suitable MAC address.
316	*
317	* @param pThis The instance.
318	* @param pMac Where to return the MAC address.
319	*/
320	DECLHIDDEN(void) vboxNetAdpComposeMACAddress(PVBOXNETADP pThis, PRTMAC pMac)
321	{
322	#if 0 /* Use a locally administered version of the OUI we use for the guest NICs. */
323	pMac->au8[0] = 0x08 \| 2;
324	pMac->au8[1] = 0x00;
325	pMac->au8[2] = 0x27;
326	#else /* this is what \0vb comes down to. It seems to be unassigned atm. */
327	pMac->au8[0] = 0;
328	pMac->au8[1] = 0x76;
329	pMac->au8[2] = 0x62;
330	#endif
331
332	pMac->au8[3] = 0; /* pThis->uUnit >> 16; */
333	pMac->au8[4] = 0; /* pThis->uUnit >> 8; */
334	pMac->au8[5] = pThis->uUnit;
335	}
336
337
338	/**
339	* Checks if receive is possible and increases busy and ref counters if so.
340	*
341	* @param pThis The instance.
342	*/
343	DECLHIDDEN(bool) vboxNetAdpPrepareToReceive(PVBOXNETADP pThis)
344	{
345	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
346	bool fCanReceive = false;
347	/*
348	* Input validation.
349	*/
350	AssertPtr(pThis);
351	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
352	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
353	if (vboxNetAdpGetState(pThis) == kVBoxNetAdpState_Active)
354	{
355	fCanReceive = true;
356	vboxNetAdpRetain(pThis);
357	vboxNetAdpBusy(pThis);
358	}
359	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
360	Log(("vboxNetAdpPrepareToReceive: fCanReceive=%d.\n", fCanReceive));
361
362	return fCanReceive;
363	}
364
365
366	/**
367	* Forwards scatter/gather list to internal network and decreases busy and ref counters.
368	*
369	* @param pThis The instance.
370	*/
371	DECLHIDDEN(void) vboxNetAdpReceive(PVBOXNETADP pThis, PINTNETSG pSG)
372	{
373	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
374	/*
375	* Input validation.
376	*/
377	AssertPtr(pThis);
378	AssertPtr(pSG);
379	AssertPtr(pThis->pSwitchPort);
380	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
381	Log(("vboxNetAdpReceive: forwarding packet to internal net...\n"));
382	pThis->pSwitchPort->pfnRecv(pThis->pSwitchPort, pSG, INTNETTRUNKDIR_HOST);
383	vboxNetAdpIdle(pThis);
384	vboxNetAdpRelease(pThis);
385	}
386
387
388	/**
389	* Decreases busy and ref counters.
390	*
391	* @param pThis The instance.
392	*/
393	DECLHIDDEN(void) vboxNetAdpCancelReceive(PVBOXNETADP pThis)
394	{
395	Log(("vboxNetAdpCancelReceive: cancelled.\n"));
396	vboxNetAdpIdle(pThis);
397	vboxNetAdpRelease(pThis);
398	}
399
400
401	/**
402	* @copydoc INTNETTRUNKIFPORT::pfnXmit
403	*/
404	static DECLCALLBACK(int) vboxNetAdpPortXmit(PINTNETTRUNKIFPORT pIfPort, PINTNETSG pSG, uint32_t fDst)
405	{
406	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
407	PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
408	int rc = VINF_SUCCESS;
409
410	/*
411	* Input validation.
412	*/
413	AssertPtr(pThis);
414	AssertPtr(pSG);
415	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
416
417	Log(("vboxNetAdpPortXmit: outgoing packet (len=%d)\n", pSG->cbTotal));
418
419	/*
420	* Do a retain/busy, invoke the OS specific code.
421	*/
422	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
423	if (vboxNetAdpGetState(pThis) != kVBoxNetAdpState_Active)
424	{
425	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
426	Log(("vboxNetAdpReceive: Dropping incoming packet for inactive interface %s.\n",
427	pThis->szName));
428	return VERR_INVALID_STATE;
429	}
430	vboxNetAdpRetain(pThis);
431	vboxNetAdpBusy(pThis);
432	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
433
434	rc = vboxNetAdpPortOsXmit(pThis, pSG, fDst);
435	vboxNetAdpIdle(pThis);
436	vboxNetAdpRelease(pThis);
437
438	return rc;
439	}
440
441
442	/**
443	* @copydoc INTNETTRUNKIFPORT::pfnGetMacAddress
444	*/
445	static DECLCALLBACK(void) vboxNetAdpPortGetMacAddress(PINTNETTRUNKIFPORT pIfPort, PRTMAC pMac)
446	{
447	PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
448
449	/*
450	* Input validation.
451	*/
452	AssertPtr(pThis);
453	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
454	Assert(vboxNetAdpGetStateWithLock(pThis) == kVBoxNetAdpState_Active);
455
456	/*
457	* Forward the question to the OS specific code.
458	*/
459	vboxNetAdpPortOsGetMacAddress(pThis, pMac);
460	}
461
462
463	/**
464	* @copydoc INTNETTRUNKIFPORT::pfnWaitForIdle
465	*/
466	static DECLCALLBACK(int) vboxNetAdpPortWaitForIdle(PINTNETTRUNKIFPORT pIfPort, uint32_t cMillies)
467	{
468	int rc;
469	PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
470
471	/*
472	* Input validation.
473	*/
474	AssertPtr(pThis);
475	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
476	AssertReturn(vboxNetAdpGetStateWithLock(pThis) >= kVBoxNetAdpState_Connected, VERR_INVALID_STATE);
477
478	/*
479	* Go to sleep on the semaphore after checking the busy count.
480	*/
481	vboxNetAdpRetain(pThis);
482
483	rc = VINF_SUCCESS;
484	while (pThis->cBusy && RT_SUCCESS(rc))
485	rc = RTSemEventWait(pThis->hEventIdle, cMillies); /** @todo make interruptible? */
486
487	vboxNetAdpRelease(pThis);
488
489	return rc;
490	}
491
492
493	/**
494	* @copydoc INTNETTRUNKIFPORT::pfnSetActive
495	*/
496	static DECLCALLBACK(bool) vboxNetAdpPortSetActive(PINTNETTRUNKIFPORT pIfPort, bool fActive)
497	{
498	bool fPreviouslyActive;
499	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
500	PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
501
502	/*
503	* Input validation.
504	*/
505	AssertPtr(pThis);
506	AssertPtr(pThis->pGlobals);
507	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
508
509	Log(("vboxNetAdpPortSetActive: pThis=%p, fActive=%d, state before: %d.\n", pThis, fActive, vboxNetAdpGetState(pThis)));
510	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
511
512	fPreviouslyActive = vboxNetAdpGetState(pThis) == kVBoxNetAdpState_Active;
513	if (fPreviouslyActive != fActive)
514	{
515	switch (vboxNetAdpGetState(pThis))
516	{
517	case kVBoxNetAdpState_Connected:
518	vboxNetAdpSetState(pThis, kVBoxNetAdpState_Active);
519	break;
520	case kVBoxNetAdpState_Active:
521	vboxNetAdpSetState(pThis, kVBoxNetAdpState_Connected);
522	break;
523	default:
524	break;
525	}
526	}
527
528	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
529	Log(("vboxNetAdpPortSetActive: state after: %RTbool.\n", vboxNetAdpGetState(pThis)));
530	return fPreviouslyActive;
531	}
532
533
534	/**
535	* @copydoc INTNETTRUNKIFPORT::pfnDisconnectAndRelease
536	*/
537	static DECLCALLBACK(void) vboxNetAdpPortDisconnectAndRelease(PINTNETTRUNKIFPORT pIfPort)
538	{
539	PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
540	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
541
542	/*
543	* Serious paranoia.
544	*/
545	AssertPtr(pThis);
546	Assert(pThis->MyPort.u32Version == INTNETTRUNKIFPORT_VERSION);
547	Assert(pThis->MyPort.u32VersionEnd == INTNETTRUNKIFPORT_VERSION);
548	AssertPtr(pThis->pGlobals);
549	Assert(pThis->hEventIdle != NIL_RTSEMEVENT);
550	Assert(pThis->hSpinlock != NIL_RTSPINLOCK);
551
552
553	/*
554	* Disconnect and release it.
555	*/
556	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
557	//Assert(vboxNetAdpGetState(pThis) == kVBoxNetAdpState_Connected);
558	Assert(!pThis->cBusy);
559	vboxNetAdpSetState(pThis, kVBoxNetAdpState_Transitional);
560	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
561
562	vboxNetAdpOsDisconnectIt(pThis);
563	pThis->pSwitchPort = NULL;
564
565	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
566	vboxNetAdpSetState(pThis, kVBoxNetAdpState_Available);
567	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
568
569	vboxNetAdpRelease(pThis);
570	}
571
572
573	/**
574	* @copydoc INTNETTRUNKIFPORT::pfnRelease
575	*/
576	static DECLCALLBACK(void) vboxNetAdpPortRelease(PINTNETTRUNKIFPORT pIfPort)
577	{
578	PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
579	vboxNetAdpRelease(pThis);
580	}
581
582
583	/**
584	* @copydoc INTNETTRUNKIFPORT::pfnRetain
585	*/
586	static DECLCALLBACK(void) vboxNetAdpPortRetain(PINTNETTRUNKIFPORT pIfPort)
587	{
588	PVBOXNETADP pThis = IFPORT_2_VBOXNETADP(pIfPort);
589	vboxNetAdpRetain(pThis);
590	}
591
592
593	int vboxNetAdpCreate (PINTNETTRUNKFACTORY pIfFactory, PVBOXNETADP *ppNew)
594	{
595	int rc;
596	unsigned i;
597	PVBOXNETADPGLOBALS pGlobals = (PVBOXNETADPGLOBALS)((uint8_t *)pIfFactory - RT_OFFSETOF(VBOXNETADPGLOBALS, TrunkFactory));
598
599	for (i = 0; i < RT_ELEMENTS(pGlobals->aAdapters); i++)
600	{
601	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
602	PVBOXNETADP pThis = &pGlobals->aAdapters[i];
603
604	if (vboxNetAdpCheckAndSetState(pThis, kVBoxNetAdpState_Invalid, kVBoxNetAdpState_Transitional))
605	{
606	/* Found an empty slot -- use it. */
607	RTMAC Mac;
608	Assert(ASMAtomicIncU32(&pThis->cRefs) == 1);
609	vboxNetAdpComposeMACAddress(pThis, &Mac);
610	rc = vboxNetAdpOsCreate(pThis, &Mac);
611	*ppNew = pThis;
612	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
613	vboxNetAdpSetState(pThis, kVBoxNetAdpState_Available);
614	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
615	return rc;
616	}
617	}
618
619	/* All slots in adapter array are busy. */
620	return VERR_OUT_OF_RESOURCES;
621	}
622
623	int vboxNetAdpDestroy (PVBOXNETADP pThis)
624	{
625	int rc = VINF_SUCCESS;
626	RTSPINLOCKTMP Tmp = RTSPINLOCKTMP_INITIALIZER;
627
628	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
629	if (vboxNetAdpGetState(pThis) != kVBoxNetAdpState_Available \|\| pThis->cBusy)
630	{
631	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
632	return VERR_INTNET_FLT_IF_BUSY;
633	}
634	vboxNetAdpSetState(pThis, kVBoxNetAdpState_Transitional);
635	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
636	vboxNetAdpRelease(pThis);
637
638	vboxNetAdpOsDestroy(pThis);
639
640	RTSpinlockAcquire(pThis->hSpinlock, &Tmp);
641	vboxNetAdpSetState(pThis, kVBoxNetAdpState_Invalid);
642	RTSpinlockRelease(pThis->hSpinlock, &Tmp);
643
644	return rc;
645	}
646
647	/**
648	* Connects the instance to the specified switch port.
649	*
650	* Called while owning the lock. We're ASSUMING that the internal
651	* networking code is already owning an recursive mutex, so, there
652	* will be no deadlocks when vboxNetAdpOsConnectIt calls back into
653	* it for setting preferences.
654	*
655	* @returns VBox status code.
656	* @param pThis The instance.
657	* @param pSwitchPort The port on the internal network 'switch'.
658	* @param ppIfPort Where to return our port interface.
659	*/
660	static int vboxNetAdpConnectIt(PVBOXNETADP pThis, PINTNETTRUNKSWPORT pSwitchPort, PINTNETTRUNKIFPORT *ppIfPort)
661	{
662	int rc;
663
664	/*
665	* Validate state.
666	*/
667	Assert(!pThis->cBusy);
668	Assert(vboxNetAdpGetStateWithLock(pThis) == kVBoxNetAdpState_Transitional);
669
670	/*
671	* Do the job.
672	* Note that we're calling the os stuff while owning the semaphore here.
673	*/
674	pThis->pSwitchPort = pSwitchPort;
675	rc = vboxNetAdpOsConnectIt(pThis);
676	if (RT_SUCCESS(rc))
677	{
678	*ppIfPort = &pThis->MyPort;
679	}
680	else
681	pThis->pSwitchPort = NULL;
682
683	return rc;
684	}
685
686
687	/**
688	* @copydoc INTNETTRUNKFACTORY::pfnCreateAndConnect
689	*/
690	static DECLCALLBACK(int) vboxNetAdpFactoryCreateAndConnect(PINTNETTRUNKFACTORY pIfFactory, const char *pszName,
691	PINTNETTRUNKSWPORT pSwitchPort, uint32_t fFlags,
692	PINTNETTRUNKIFPORT *ppIfPort)
693	{
694	PVBOXNETADPGLOBALS pGlobals = (PVBOXNETADPGLOBALS)((uint8_t *)pIfFactory - RT_OFFSETOF(VBOXNETADPGLOBALS, TrunkFactory));
695	PVBOXNETADP pThis;
696	int rc;
697
698	LogFlow(("vboxNetAdpFactoryCreateAndConnect: pszName=%p:{%s} fFlags=%#x\n", pszName, pszName, fFlags));
699	Assert(pGlobals->cFactoryRefs > 0);
700	AssertMsgReturn(!fFlags,
701	("%#x\n", fFlags), VERR_INVALID_PARAMETER);
702
703	/*
704	* Find instance, check if busy, connect if not.
705	*/
706	pThis = vboxNetAdpFind(pGlobals, pszName);
707	if (pThis)
708	{
709	if (vboxNetAdpCheckAndSetState(pThis, kVBoxNetAdpState_Available, kVBoxNetAdpState_Transitional))
710	{
711	vboxNetAdpRetain(pThis);
712	rc = vboxNetAdpConnectIt(pThis, pSwitchPort, ppIfPort);
713	vboxNetAdpSetStateWithLock(pThis, RT_SUCCESS(rc) ? kVBoxNetAdpState_Connected : kVBoxNetAdpState_Available);
714	}
715	else
716	rc = VERR_INTNET_FLT_IF_BUSY;
717	}
718	else
719	rc = VERR_INTNET_FLT_IF_NOT_FOUND;
720
721	return rc;
722	}
723
724
725	/**
726	* @copydoc INTNETTRUNKFACTORY::pfnRelease
727	*/
728	static DECLCALLBACK(void) vboxNetAdpFactoryRelease(PINTNETTRUNKFACTORY pIfFactory)
729	{
730	PVBOXNETADPGLOBALS pGlobals = (PVBOXNETADPGLOBALS)((uint8_t *)pIfFactory - RT_OFFSETOF(VBOXNETADPGLOBALS, TrunkFactory));
731
732	int32_t cRefs = ASMAtomicDecS32(&pGlobals->cFactoryRefs);
733	Assert(cRefs >= 0); NOREF(cRefs);
734	LogFlow(("vboxNetAdpFactoryRelease: cRefs=%d (new)\n", cRefs));
735	}
736
737
738	/**
739	* Implements the SUPDRV component factor interface query method.
740	*
741	* @returns Pointer to an interface. NULL if not supported.
742	*
743	* @param pSupDrvFactory Pointer to the component factory registration structure.
744	* @param pSession The session - unused.
745	* @param pszInterfaceUuid The factory interface id.
746	*/
747	static DECLCALLBACK(void ) vboxNetAdpQueryFactoryInterface(PCSUPDRVFACTORY pSupDrvFactory, PSUPDRVSESSION pSession, const char pszInterfaceUuid)
748	{
749	PVBOXNETADPGLOBALS pGlobals = (PVBOXNETADPGLOBALS)((uint8_t *)pSupDrvFactory - RT_OFFSETOF(VBOXNETADPGLOBALS, SupDrvFactory));
750
751	/*
752	* Convert the UUID strings and compare them.
753	*/
754	RTUUID UuidReq;
755	int rc = RTUuidFromStr(&UuidReq, pszInterfaceUuid);
756	if (RT_SUCCESS(rc))
757	{
758	if (!RTUuidCompareStr(&UuidReq, INTNETTRUNKFACTORY_UUID_STR))
759	{
760	ASMAtomicIncS32(&pGlobals->cFactoryRefs);
761	return &pGlobals->TrunkFactory;
762	}
763	#ifdef LOG_ENABLED
764	else
765	Log(("VBoxNetAdp: unknown factory interface query (%s)\n", pszInterfaceUuid));
766	#endif
767	}
768	else
769	Log(("VBoxNetAdp: rc=%Rrc, uuid=%s\n", rc, pszInterfaceUuid));
770
771	return NULL;
772	}
773
774
775	/**
776	* Checks whether the VBoxNetAdp wossname can be unloaded.
777	*
778	* This will return false if someone is currently using the module.
779	*
780	* @returns true if it's relatively safe to unload it, otherwise false.
781	* @param pGlobals Pointer to the globals.
782	*/
783	DECLHIDDEN(bool) vboxNetAdpCanUnload(PVBOXNETADPGLOBALS pGlobals)
784	{
785	bool fRc = true; /* Assume it can be unloaded. */
786	unsigned i;
787
788	for (i = 0; i < RT_ELEMENTS(pGlobals->aAdapters); i++)
789	{
790	PVBOXNETADP pThis = &pGlobals->aAdapters[i];
791	if (vboxNetAdpGetStateWithLock(&pGlobals->aAdapters[i]) >= kVBoxNetAdpState_Connected)
792	{
793	fRc = false;
794	break; /* We already know the answer. */
795	}
796	}
797	return fRc && ASMAtomicUoReadS32((int32_t volatile *)&pGlobals->cFactoryRefs) <= 0;
798	}
799
800	/**
801	* tries to deinitialize Idc
802	* we separate the globals settings "base" which is actually
803	* "general" globals settings except for Idc, and idc.
804	* This is needed for windows filter driver, which gets loaded prior to VBoxDrv,
805	* thus it's not possible to make idc initialization from the driver startup routine for it,
806	* though the "base is still needed for the driver to functions".
807	* @param pGlobals
808	* @return VINF_SUCCESS on succes, VERR_WRONG_ORDER if we're busy.
809	*/
810	DECLHIDDEN(int) vboxNetAdpTryDeleteIdc(PVBOXNETADPGLOBALS pGlobals)
811	{
812	int rc;
813
814	Assert(pGlobals->hFastMtx != NIL_RTSEMFASTMUTEX);
815
816	/*
817	* Check before trying to deregister the factory.
818	*/
819	if (!vboxNetAdpCanUnload(pGlobals))
820	return VERR_WRONG_ORDER;
821
822	/*
823	* Disconnect from SUPDRV and check that nobody raced us,
824	* reconnect if that should happen.
825	*/
826	rc = SUPR0IdcComponentDeregisterFactory(&pGlobals->SupDrvIDC, &pGlobals->SupDrvFactory);
827	AssertRC(rc);
828	if (!vboxNetAdpCanUnload(pGlobals))
829	{
830	rc = SUPR0IdcComponentRegisterFactory(&pGlobals->SupDrvIDC, &pGlobals->SupDrvFactory);
831	AssertRC(rc);
832	return VERR_WRONG_ORDER;
833	}
834
835	SUPR0IdcClose(&pGlobals->SupDrvIDC);
836
837	return rc;
838	}
839
840	static int vboxNetAdpSlotCreate(PVBOXNETADPGLOBALS pGlobals, unsigned uUnit, PVBOXNETADP pNew)
841	{
842	int rc;
843
844	pNew->MyPort.u32Version = INTNETTRUNKIFPORT_VERSION;
845	pNew->MyPort.pfnRetain = vboxNetAdpPortRetain;
846	pNew->MyPort.pfnRelease = vboxNetAdpPortRelease;
847	pNew->MyPort.pfnDisconnectAndRelease= vboxNetAdpPortDisconnectAndRelease;
848	pNew->MyPort.pfnSetActive = vboxNetAdpPortSetActive;
849	pNew->MyPort.pfnWaitForIdle = vboxNetAdpPortWaitForIdle;
850	pNew->MyPort.pfnGetMacAddress = vboxNetAdpPortGetMacAddress;
851	pNew->MyPort.pfnXmit = vboxNetAdpPortXmit;
852	pNew->MyPort.u32VersionEnd = INTNETTRUNKIFPORT_VERSION;
853	pNew->pSwitchPort = NULL;
854	pNew->pGlobals = pGlobals;
855	pNew->hSpinlock = NIL_RTSPINLOCK;
856	pNew->enmState = kVBoxNetAdpState_Invalid;
857	pNew->cRefs = 0;
858	pNew->cBusy = 0;
859	pNew->hEventIdle = NIL_RTSEMEVENT;
860
861	rc = RTSpinlockCreate(&pNew->hSpinlock);
862	if (RT_SUCCESS(rc))
863	{
864	rc = RTSemEventCreate(&pNew->hEventIdle);
865	if (RT_SUCCESS(rc))
866	{
867	rc = vboxNetAdpOsInit(pNew);
868	if (RT_SUCCESS(rc))
869	{
870	return rc;
871	}
872	RTSemEventDestroy(pNew->hEventIdle);
873	pNew->hEventIdle = NIL_RTSEMEVENT;
874	}
875	RTSpinlockDestroy(pNew->hSpinlock);
876	pNew->hSpinlock = NIL_RTSPINLOCK;
877	}
878	return rc;
879	}
880
881	static void vboxNetAdpSlotDestroy(PVBOXNETADP pThis)
882	{
883	Assert(pThis->cRefs == 0);
884	Assert(pThis->cBusy == 0);
885	Assert(vboxNetAdpGetState(pThis) == kVBoxNetAdpState_Invalid);
886	if (pThis->hEventIdle != NIL_RTSEMEVENT)
887	{
888	RTSemEventDestroy(pThis->hEventIdle);
889	pThis->hEventIdle = NIL_RTSEMEVENT;
890	}
891	if (pThis->hSpinlock != NIL_RTSPINLOCK)
892	{
893	RTSpinlockDestroy(pThis->hSpinlock);
894	pThis->hSpinlock = NIL_RTSPINLOCK;
895	}
896	}
897
898	/**
899	* performs "base" globals deinitialization
900	* we separate the globals settings "base" which is actually
901	* "general" globals settings except for Idc, and idc.
902	* This is needed for windows filter driver, which gets loaded prior to VBoxDrv,
903	* thus it's not possible to make idc initialization from the driver startup routine for it,
904	* though the "base is still needed for the driver to functions".
905	* @param pGlobals
906	* @return none
907	*/
908	DECLHIDDEN(void) vboxNetAdpDeleteGlobalsBase(PVBOXNETADPGLOBALS pGlobals)
909	{
910	int i;
911	/*
912	* Release resources.
913	*/
914	for (i = 0; i < (int)RT_ELEMENTS(pGlobals->aAdapters); i++)
915	if (RT_SUCCESS(vboxNetAdpDestroy(&pGlobals->aAdapters[i])))
916	vboxNetAdpSlotDestroy(&pGlobals->aAdapters[i]);
917
918	RTSemFastMutexDestroy(pGlobals->hFastMtx);
919	pGlobals->hFastMtx = NIL_RTSEMFASTMUTEX;
920
921	#ifdef VBOXNETADP_STATIC_CONFIG
922	RTSemEventDestroy(pGlobals->hTimerEvent);
923	pGlobals->hTimerEvent = NIL_RTSEMEVENT;
924	#endif
925
926	}
927
928
929	/**
930	* Called by the native part when the OS wants the driver to unload.
931	*
932	* @returns VINF_SUCCESS on succes, VERR_WRONG_ORDER if we're busy.
933	*
934	* @param pGlobals Pointer to the globals.
935	*/
936	DECLHIDDEN(int) vboxNetAdpTryDeleteGlobals(PVBOXNETADPGLOBALS pGlobals)
937	{
938	int rc = vboxNetAdpTryDeleteIdc(pGlobals);
939	if (RT_SUCCESS(rc))
940	{
941	vboxNetAdpDeleteGlobalsBase(pGlobals);
942	}
943	return rc;
944	}
945
946
947	/**
948	* performs the "base" globals initialization
949	* we separate the globals initialization to globals "base" initialization which is actually
950	* "general" globals initialization except for Idc not being initialized, and idc initialization.
951	* This is needed for windows filter driver, which gets loaded prior to VBoxDrv,
952	* thus it's not possible to make idc initialization from the driver startup routine for it.
953	*
954	* @returns VBox status code.
955	* @param pGlobals Pointer to the globals. */
956	DECLHIDDEN(int) vboxNetAdpInitGlobalsBase(PVBOXNETADPGLOBALS pGlobals)
957	{
958	/*
959	* Initialize the common portions of the structure.
960	*/
961	int i;
962	int rc = RTSemFastMutexCreate(&pGlobals->hFastMtx);
963	if (RT_SUCCESS(rc))
964	{
965	memset(pGlobals->aAdapters, 0, sizeof(pGlobals->aAdapters));
966	for (i = 0; i < (int)RT_ELEMENTS(pGlobals->aAdapters); i++)
967	{
968	rc = vboxNetAdpSlotCreate(pGlobals, i, &pGlobals->aAdapters[i]);
969	if (RT_FAILURE(rc))
970	{
971	/* Clean up. */
972	while (--i >= 0)
973	vboxNetAdpSlotDestroy(&pGlobals->aAdapters[i]);
974	Log(("vboxNetAdpInitGlobalsBase: Failed to create fast mutex (rc=%Rrc).\n", rc));
975	RTSemFastMutexDestroy(pGlobals->hFastMtx);
976	return rc;
977	}
978	}
979	pGlobals->TrunkFactory.pfnRelease = vboxNetAdpFactoryRelease;
980	pGlobals->TrunkFactory.pfnCreateAndConnect = vboxNetAdpFactoryCreateAndConnect;
981
982	strcpy(pGlobals->SupDrvFactory.szName, "VBoxNetAdp");
983	pGlobals->SupDrvFactory.pfnQueryFactoryInterface = vboxNetAdpQueryFactoryInterface;
984	}
985
986	return rc;
987	}
988
989	/**
990	* performs the Idc initialization
991	* we separate the globals initialization to globals "base" initialization which is actually
992	* "general" globals initialization except for Idc not being initialized, and idc initialization.
993	* This is needed for windows filter driver, which gets loaded prior to VBoxDrv,
994	* thus it's not possible to make idc initialization from the driver startup routine for it.
995	*
996	* @returns VBox status code.
997	* @param pGlobals Pointer to the globals. */
998	DECLHIDDEN(int) vboxNetAdpInitIdc(PVBOXNETADPGLOBALS pGlobals)
999	{
1000	int rc;
1001	/*
1002	* Establish a connection to SUPDRV and register our component factory.
1003	*/
1004	rc = SUPR0IdcOpen(&pGlobals->SupDrvIDC, 0 /* iReqVersion = default /, 0 / iMinVersion = default */, NULL, NULL, NULL);
1005	if (RT_SUCCESS(rc))
1006	{
1007	rc = SUPR0IdcComponentRegisterFactory(&pGlobals->SupDrvIDC, &pGlobals->SupDrvFactory);
1008	if (RT_SUCCESS(rc))
1009	{
1010	#if 1 /** @todo REMOVE ME! */
1011	PVBOXNETADP pTmp;
1012	rc = vboxNetAdpCreate(&pGlobals->TrunkFactory, &pTmp);
1013	if (RT_FAILURE(rc))
1014	Log(("Failed to create vboxnet0, rc=%Rrc.\n", rc));
1015	#endif
1016	Log(("VBoxNetAdp: pSession=%p\n", SUPR0IdcGetSession(&pGlobals->SupDrvIDC)));
1017	return rc;
1018	}
1019
1020	/* bail out. */
1021	LogRel(("VBoxNetAdp: Failed to register component factory, rc=%Rrc\n", rc));
1022	SUPR0IdcClose(&pGlobals->SupDrvIDC);
1023	}
1024
1025	return rc;
1026	}
1027
1028	/**
1029	* Called by the native driver/kext module initialization routine.
1030	*
1031	* It will initialize the common parts of the globals, assuming the caller
1032	* has already taken care of the OS specific bits.
1033	*
1034	* @returns VBox status code.
1035	* @param pGlobals Pointer to the globals.
1036	*/
1037	DECLHIDDEN(int) vboxNetAdpInitGlobals(PVBOXNETADPGLOBALS pGlobals)
1038	{
1039	/*
1040	* Initialize the common portions of the structure.
1041	*/
1042	int rc = vboxNetAdpInitGlobalsBase(pGlobals);
1043	if (RT_SUCCESS(rc))
1044	{
1045	rc = vboxNetAdpInitIdc(pGlobals);
1046	if (RT_SUCCESS(rc))
1047	{
1048	return rc;
1049	}
1050
1051	/* bail out. */
1052	vboxNetAdpDeleteGlobalsBase(pGlobals);
1053	}
1054
1055	return rc;
1056	}
1057
1058	#else /* !VBOXANETADP_DO_NOT_USE_NETFLT */
1059
1060
1061	VBOXNETADP g_aAdapters[VBOXNETADP_MAX_INSTANCES];
1062
1063
1064
1065	/**
1066	* Generate a suitable MAC address.
1067	*
1068	* @param pThis The instance.
1069	* @param pMac Where to return the MAC address.
1070	*/
1071	DECLHIDDEN(void) vboxNetAdpComposeMACAddress(PVBOXNETADP pThis, PRTMAC pMac)
1072	{
1073	/* Use a locally administered version of the OUI we use for the guest NICs. */
1074	pMac->au8[0] = 0x08 \| 2;
1075	pMac->au8[1] = 0x00;
1076	pMac->au8[2] = 0x27;
1077
1078	pMac->au8[3] = 0; /* pThis->uUnit >> 16; */
1079	pMac->au8[4] = 0; /* pThis->uUnit >> 8; */
1080	pMac->au8[5] = pThis->uUnit;
1081	}
1082
1083	int vboxNetAdpCreate (PVBOXNETADP *ppNew)
1084	{
1085	int rc;
1086	unsigned i;
1087	for (i = 0; i < RT_ELEMENTS(g_aAdapters); i++)
1088	{
1089	PVBOXNETADP pThis = &g_aAdapters[i];
1090
1091	if (ASMAtomicCmpXchgU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Transitional, kVBoxNetAdpState_Invalid))
1092	{
1093	RTMAC Mac;
1094	/* Found an empty slot -- use it. */
1095	Log(("vboxNetAdpCreate: found empty slot: %d\n", i));
1096	vboxNetAdpComposeMACAddress(pThis, &Mac);
1097	rc = vboxNetAdpOsCreate(pThis, &Mac);
1098	Log(("vboxNetAdpCreate: pThis=%p pThis->szName=%p\n", pThis, pThis->szName));
1099	if (RT_SUCCESS(rc))
1100	{
1101	*ppNew = pThis;
1102	ASMAtomicWriteU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Active);
1103	}
1104	else
1105	{
1106	ASMAtomicWriteU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Invalid);
1107	Log(("vboxNetAdpCreate: vboxNetAdpOsCreate failed with '%Rrc'.\n", rc));
1108	}
1109	Log2(("VBoxNetAdpCreate: Created %s\n", g_aAdapters[i].szName));
1110	for (i = 0; i < RT_ELEMENTS(g_aAdapters); i++)
1111	Log2(("VBoxNetAdpCreate: Scanning entry: state=%d name=%s\n", g_aAdapters[i].enmState, g_aAdapters[i].szName));
1112	return rc;
1113	}
1114	}
1115	Log(("vboxNetAdpCreate: no empty slots!\n"));
1116
1117	/* All slots in adapter array are busy. */
1118	return VERR_OUT_OF_RESOURCES;
1119	}
1120
1121	int vboxNetAdpDestroy (PVBOXNETADP pThis)
1122	{
1123	int rc = VINF_SUCCESS;
1124
1125	if (!ASMAtomicCmpXchgU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Transitional, kVBoxNetAdpState_Active))
1126	return VERR_INTNET_FLT_IF_BUSY;
1127
1128	vboxNetAdpOsDestroy(pThis);
1129
1130	ASMAtomicWriteU32((uint32_t volatile *)&pThis->enmState, kVBoxNetAdpState_Invalid);
1131
1132	return rc;
1133	}
1134
1135	int vboxNetAdpInit(void)
1136	{
1137	unsigned i;
1138	PVBOXNETADP pVboxnet0;
1139	/*
1140	* Init common members and call OS-specific init.
1141	*/
1142	for (i = 0; i < RT_ELEMENTS(g_aAdapters); i++)
1143	{
1144	g_aAdapters[i].enmState = kVBoxNetAdpState_Invalid;
1145	g_aAdapters[i].uUnit = i;
1146	vboxNetAdpOsInit(&g_aAdapters[i]);
1147	}
1148
1149	/* Create vboxnet0 */
1150	return vboxNetAdpCreate(&pVboxnet0);
1151	}
1152
1153	/**
1154	* Finds an adapter by its name.
1155	*
1156	* @returns Pointer to the instance by the given name. NULL if not found.
1157	* @param pGlobals The globals.
1158	* @param pszName The name of the instance.
1159	*/
1160	PVBOXNETADP vboxNetAdpFindByName(const char *pszName)
1161	{
1162	unsigned i;
1163
1164	for (i = 0; i < RT_ELEMENTS(g_aAdapters); i++)
1165	{
1166	PVBOXNETADP pThis = &g_aAdapters[i];
1167	Log2(("VBoxNetAdp: Scanning entry: state=%d name=%s\n", pThis->enmState, pThis->szName));
1168	if ( strcmp(pThis->szName, pszName) == 0
1169	&& ASMAtomicReadU32((uint32_t volatile *)&pThis->enmState) == kVBoxNetAdpState_Active)
1170	return pThis;
1171	}
1172	return NULL;
1173	}
1174
1175	void vboxNetAdpShutdown(void)
1176	{
1177	unsigned i;
1178
1179	/* Remove virtual adapters */
1180	for (i = 0; i < RT_ELEMENTS(g_aAdapters); i++)
1181	vboxNetAdpDestroy(&g_aAdapters[i]);
1182	}
1183	#endif /* !VBOXANETADP_DO_NOT_USE_NETFLT */

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source: vbox/trunk/src/VBox/HostDrivers/VBoxNetAdp/VBoxNetAdp.c@ 28666

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