DrvTAP.cpp@ 9594

Last change on this file since 9594 was 9124, checked in by vboxsync, 16 years ago
Cleanup of the Solaris 10 detection, reducing ifdef clutter in the C files and avoid using the system namespace.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 39.0 KB

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1	/** $Id: DrvTAP.cpp 9124 2008-05-26 13:48:23Z vboxsync $ */
2	/** @file
3	* Universial TAP 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_TUN
26	#include <VBox/log.h>
27	#include <VBox/pdmdrv.h>
28
29	#include <iprt/assert.h>
30	#include <iprt/file.h>
31	#include <iprt/string.h>
32	#include <iprt/path.h>
33	#include <iprt/thread.h>
34	#include <iprt/asm.h>
35	#include <iprt/semaphore.h>
36	#ifdef RT_OS_SOLARIS
37	# include <iprt/process.h>
38	# include <iprt/env.h>
39	# ifdef VBOX_WITH_CROSSBOW
40	# include <iprt/mem.h>
41	# endif
42	#endif
43
44	#include <sys/ioctl.h>
45	#include <sys/poll.h>
46	#ifdef RT_OS_SOLARIS
47	# include <sys/stat.h>
48	# include <sys/ethernet.h>
49	# include <sys/sockio.h>
50	# include <netinet/in.h>
51	# include <netinet/in_systm.h>
52	# include <netinet/ip.h>
53	# include <netinet/ip_icmp.h>
54	# include <netinet/udp.h>
55	# include <netinet/tcp.h>
56	# include <net/if.h>
57	# include <stropts.h>
58	# include <fcntl.h>
59	# include <ctype.h>
60	# include <stdlib.h>
61	# include <stdio.h>
62	# ifdef VBOX_WITH_CROSSBOW
63	# include "solaris/vbox-libdlpi.h"
64	# endif
65	#else
66	# include <sys/fcntl.h>
67	#endif
68	#include <errno.h>
69	#include <unistd.h>
70
71	#ifdef RT_OS_L4
72	# include <l4/vboxserver/file.h>
73	#endif
74
75	#include "Builtins.h"
76
77
78	/*******************************************************************************
79	* Structures and Typedefs *
80	*******************************************************************************/
81	/**
82	* Block driver instance data.
83	*/
84	typedef struct DRVTAP
85	{
86	/** The network interface. */
87	PDMINETWORKCONNECTOR INetworkConnector;
88	/** The network interface. */
89	PPDMINETWORKPORT pPort;
90	/** Pointer to the driver instance. */
91	PPDMDRVINS pDrvIns;
92	/** TAP device file handle. */
93	RTFILE FileDevice;
94	/** The configured TAP device name. */
95	char *pszDeviceName;
96	#ifdef RT_OS_SOLARIS
97	# ifdef VBOX_WITH_CROSSBOW
98	/** Crossbow: MAC address of the device. */
99	PDMMAC MacAddress;
100	/** Crossbow: Handle of the NIC. */
101	dlpi_handle_t pDeviceHandle;
102	# else
103	/** IP device file handle (/dev/udp). */
104	RTFILE IPFileDevice;
105	# endif
106	/** Whether device name is obtained from setup application. */
107	bool fStatic;
108	#endif
109	/** TAP setup application. */
110	char *pszSetupApplication;
111	/** TAP terminate application. */
112	char *pszTerminateApplication;
113	/** The write end of the control pipe. */
114	RTFILE PipeWrite;
115	/** The read end of the control pipe. */
116	RTFILE PipeRead;
117	/** Reader thread. */
118	PPDMTHREAD pThread;
119
120	#ifdef VBOX_WITH_STATISTICS
121	/** Number of sent packets. */
122	STAMCOUNTER StatPktSent;
123	/** Number of sent bytes. */
124	STAMCOUNTER StatPktSentBytes;
125	/** Number of received packets. */
126	STAMCOUNTER StatPktRecv;
127	/** Number of received bytes. */
128	STAMCOUNTER StatPktRecvBytes;
129	/** Profiling packet transmit runs. */
130	STAMPROFILE StatTransmit;
131	/** Profiling packet receive runs. */
132	STAMPROFILEADV StatReceive;
133	#endif /* VBOX_WITH_STATISTICS */
134
135	#ifdef LOG_ENABLED
136	/** The nano ts of the last transfer. */
137	uint64_t u64LastTransferTS;
138	/** The nano ts of the last receive. */
139	uint64_t u64LastReceiveTS;
140	#endif
141	} DRVTAP, *PDRVTAP;
142
143
144	/** Converts a pointer to TAP::INetworkConnector to a PRDVTAP. */
145	#define PDMINETWORKCONNECTOR_2_DRVTAP(pInterface) ( (PDRVTAP)((uintptr_t)pInterface - RT_OFFSETOF(DRVTAP, INetworkConnector)) )
146
147
148	/*******************************************************************************
149	* Internal Functions *
150	*******************************************************************************/
151	#ifdef RT_OS_SOLARIS
152	# ifdef VBOX_WITH_CROSSBOW
153	static int SolarisOpenVNIC(PDRVTAP pData);
154	static int SolarisDLPIErr2VBoxErr(int rc);
155	# else
156	static int SolarisTAPAttach(PDRVTAP pData);
157	# endif
158	#endif
159
160
161	/**
162	* Send data to the network.
163	*
164	* @returns VBox status code.
165	* @param pInterface Pointer to the interface structure containing the called function pointer.
166	* @param pvBuf Data to send.
167	* @param cb Number of bytes to send.
168	* @thread EMT
169	*/
170	static DECLCALLBACK(int) drvTAPSend(PPDMINETWORKCONNECTOR pInterface, const void *pvBuf, size_t cb)
171	{
172	PDRVTAP pData = PDMINETWORKCONNECTOR_2_DRVTAP(pInterface);
173	STAM_COUNTER_INC(&pData->StatPktSent);
174	STAM_COUNTER_ADD(&pData->StatPktSentBytes, cb);
175	STAM_PROFILE_START(&pData->StatTransmit, a);
176
177	#ifdef LOG_ENABLED
178	uint64_t u64Now = RTTimeProgramNanoTS();
179	LogFlow(("drvTAPSend: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
180	cb, u64Now, u64Now - pData->u64LastReceiveTS, u64Now - pData->u64LastTransferTS));
181	pData->u64LastTransferTS = u64Now;
182	#endif
183	Log2(("drvTAPSend: pvBuf=%p cb=%#x\n"
184	"%.*Vhxd\n",
185	pvBuf, cb, cb, pvBuf));
186
187	int rc = RTFileWrite(pData->FileDevice, pvBuf, cb, NULL);
188
189	STAM_PROFILE_STOP(&pData->StatTransmit, a);
190	AssertRC(rc);
191	return rc;
192	}
193
194
195	/**
196	* Set promiscuous mode.
197	*
198	* This is called when the promiscuous mode is set. This means that there doesn't have
199	* to be a mode change when it's called.
200	*
201	* @param pInterface Pointer to the interface structure containing the called function pointer.
202	* @param fPromiscuous Set if the adaptor is now in promiscuous mode. Clear if it is not.
203	* @thread EMT
204	*/
205	static DECLCALLBACK(void) drvTAPSetPromiscuousMode(PPDMINETWORKCONNECTOR pInterface, bool fPromiscuous)
206	{
207	LogFlow(("drvTAPSetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
208	/* nothing to do */
209	}
210
211
212	/**
213	* Notification on link status changes.
214	*
215	* @param pInterface Pointer to the interface structure containing the called function pointer.
216	* @param enmLinkState The new link state.
217	* @thread EMT
218	*/
219	static DECLCALLBACK(void) drvTAPNotifyLinkChanged(PPDMINETWORKCONNECTOR pInterface, PDMNETWORKLINKSTATE enmLinkState)
220	{
221	LogFlow(("drvNATNotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
222	/** @todo take action on link down and up. Stop the polling and such like. */
223	}
224
225
226	/**
227	* Asynchronous I/O thread for handling receive.
228	*
229	* @returns VINF_SUCCESS (ignored).
230	* @param Thread Thread handle.
231	* @param pvUser Pointer to a DRVTAP structure.
232	*/
233	static DECLCALLBACK(int) drvTAPAsyncIoThread(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
234	{
235	PDRVTAP pData = PDMINS2DATA(pDrvIns, PDRVTAP);
236	LogFlow(("drvTAPAsyncIoThread: pData=%p\n", pData));
237
238	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
239	return VINF_SUCCESS;
240
241	STAM_PROFILE_ADV_START(&pData->StatReceive, a);
242
243	/*
244	* Polling loop.
245	*/
246	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
247	{
248	/*
249	* Wait for something to become available.
250	*/
251	struct pollfd aFDs[2];
252	aFDs[0].fd = pData->FileDevice;
253	aFDs[0].events = POLLIN \| POLLPRI;
254	aFDs[0].revents = 0;
255	aFDs[1].fd = pData->PipeRead;
256	aFDs[1].events = POLLIN \| POLLPRI \| POLLERR \| POLLHUP;
257	aFDs[1].revents = 0;
258	STAM_PROFILE_ADV_STOP(&pData->StatReceive, a);
259	errno=0;
260	int rc = poll(&aFDs[0], ELEMENTS(aFDs), -1 /* infinite */);
261
262	/* this might have changed in the meantime */
263	if (pThread->enmState != PDMTHREADSTATE_RUNNING)
264	break;
265
266	STAM_PROFILE_ADV_START(&pData->StatReceive, a);
267	if ( rc > 0
268	&& (aFDs[0].revents & (POLLIN \| POLLPRI))
269	&& !aFDs[1].revents)
270	{
271	/*
272	* Read the frame.
273	*/
274	char achBuf[4096];
275	size_t cbRead = 0;
276	#ifdef VBOX_WITH_CROSSBOW
277	cbRead = sizeof(achBuf);
278	rc = g_pfnLibDlpiRecv(pData->pDeviceHandle, NULL, NULL, achBuf, &cbRead, -1, NULL);
279	rc = RT_LIKELY(rc == DLPI_SUCCESS) ? VINF_SUCCESS : SolarisDLPIErr2VBoxErr(rc);
280	#else
281	/** @note At least on Linux we will never receive more than one network packet
282	* after poll() returned successfully. I don't know why but a second
283	* RTFileRead() operation will return with VERR_TRY_AGAIN in any case. */
284	rc = RTFileRead(pData->FileDevice, achBuf, sizeof(achBuf), &cbRead);
285	#endif
286	if (VBOX_SUCCESS(rc))
287	{
288	AssertMsg(cbRead <= 1536, ("cbRead=%d\n", cbRead));
289
290	/*
291	* Wait for the device to have space for this frame.
292	* Most guests use frame-sized receive buffers, hence non-zero cbMax
293	* automatically means there is enough room for entire frame. Some
294	* guests (eg. Solaris) use large chains of small receive buffers
295	* (each 128 or so bytes large). We will still start receiving as soon
296	* as cbMax is non-zero because:
297	* - it would be quite expensive for pfnCanReceive to accurately
298	* determine free receive buffer space
299	* - if we were waiting for enough free buffers, there is a risk
300	* of deadlocking because the guest could be waiting for a receive
301	* overflow error to allocate more receive buffers
302	*/
303	STAM_PROFILE_ADV_STOP(&pData->StatReceive, a);
304	int rc = pData->pPort->pfnWaitReceiveAvail(pData->pPort, RT_INDEFINITE_WAIT);
305	STAM_PROFILE_ADV_START(&pData->StatReceive, a);
306
307	/*
308	* A return code != VINF_SUCCESS means that we were woken up during a VM
309	* state transistion. Drop the packet and wait for the next one.
310	*/
311	if (RT_FAILURE(rc))
312	continue;
313
314	/*
315	* Pass the data up.
316	*/
317	#ifdef LOG_ENABLED
318	uint64_t u64Now = RTTimeProgramNanoTS();
319	LogFlow(("drvTAPAsyncIoThread: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
320	cbRead, u64Now, u64Now - pData->u64LastReceiveTS, u64Now - pData->u64LastTransferTS));
321	pData->u64LastReceiveTS = u64Now;
322	#endif
323	Log2(("drvTAPAsyncIoThread: cbRead=%#x\n" "%.*Vhxd\n", cbRead, cbRead, achBuf));
324	STAM_COUNTER_INC(&pData->StatPktRecv);
325	STAM_COUNTER_ADD(&pData->StatPktRecvBytes, cbRead);
326	rc = pData->pPort->pfnReceive(pData->pPort, achBuf, cbRead);
327	AssertRC(rc);
328	}
329	else
330	{
331	LogFlow(("drvTAPAsyncIoThread: RTFileRead -> %Vrc\n", rc));
332	if (rc == VERR_INVALID_HANDLE)
333	break;
334	RTThreadYield();
335	}
336	}
337	else if ( rc > 0
338	&& aFDs[1].revents)
339	{
340	LogFlow(("drvTAPAsyncIoThread: Control message: enmState=%d revents=%#x\n", pThread->enmState, aFDs[1].revents));
341	if (aFDs[1].revents & (POLLHUP \| POLLERR \| POLLNVAL))
342	break;
343
344	/* drain the pipe */
345	char ch;
346	size_t cbRead;
347	RTFileRead(pData->PipeRead, &ch, 1, &cbRead);
348	}
349	else
350	{
351	/*
352	* poll() failed for some reason. Yield to avoid eating too much CPU.
353	*
354	* EINTR errors have been seen frequently. They should be harmless, even
355	* if they are not supposed to occur in our setup.
356	*/
357	if (errno == EINTR)
358	Log(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
359	else
360	AssertMsgFailed(("rc=%d revents=%#x,%#x errno=%p %s\n", rc, aFDs[0].revents, aFDs[1].revents, errno, strerror(errno)));
361	RTThreadYield();
362	}
363	}
364
365
366	LogFlow(("drvTAPAsyncIoThread: returns %Vrc\n", VINF_SUCCESS));
367	STAM_PROFILE_ADV_STOP(&pData->StatReceive, a);
368	return VINF_SUCCESS;
369	}
370
371
372	/**
373	* Unblock the send thread so it can respond to a state change.
374	*
375	* @returns VBox status code.
376	* @param pDevIns The pcnet device instance.
377	* @param pThread The send thread.
378	*/
379	static DECLCALLBACK(int) drvTapAsyncIoWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
380	{
381	PDRVTAP pData = PDMINS2DATA(pDrvIns, PDRVTAP);
382
383	int rc = RTFileWrite(pData->PipeWrite, "", 1, NULL);
384	AssertRC(rc);
385
386	return VINF_SUCCESS;
387	}
388
389
390	#if defined(RT_OS_SOLARIS)
391	/**
392	* Calls OS-specific TAP setup application/script.
393	*
394	* @returns VBox error code.
395	* @param pData The instance data.
396	*/
397	static int drvTAPSetupApplication(PDRVTAP pData)
398	{
399	char szCommand[4096];
400
401	#ifdef VBOX_WITH_CROSSBOW
402	/* Convert MAC address bytes to string (required by Solaris' dladm). */
403	char *pszHex = "0123456789abcdef";
404	uint8_t *pMacAddr8 = pData->MacAddress.au8;
405	char szMacAddress[3 * sizeof(PDMMAC)];
406	for (unsigned int i = 0; i < sizeof(PDMMAC); i++)
407	{
408	szMacAddress[3 * i] = pszHex[((*pMacAddr8 >> 4) & 0x0f)];
409	szMacAddress[3 * i + 1] = pszHex[(*pMacAddr8 & 0x0f)];
410	szMacAddress[3 * i + 2] = ':';
411	*pMacAddr8++;
412	}
413	szMacAddress[sizeof(szMacAddress) - 1] = 0;
414
415	RTStrPrintf(szCommand, sizeof(szCommand), "%s %s %s", pData->pszSetupApplication,
416	szMacAddress, pData->fStatic ? pData->pszDeviceName : "");
417	#else
418	RTStrPrintf(szCommand, sizeof(szCommand), "%s %s", pData->pszSetupApplication,
419	pData->fStatic ? pData->pszDeviceName : "");
420	#endif
421
422	/* Pipe open the setup application. */
423	Log2(("Starting TAP setup application: %s\n", szCommand));
424	FILE* pfSetupHandle = popen(szCommand, "r");
425	if (pfSetupHandle == 0)
426	{
427	LogRel(("TAP#%d: Failed to run TAP setup application: %s\n", pData->pDrvIns->iInstance,
428	pData->pszSetupApplication, strerror(errno)));
429	return VERR_HOSTIF_INIT_FAILED;
430	}
431	if (!pData->fStatic)
432	{
433	/* Obtain device name from setup application. */
434	char acBuffer[64];
435	size_t cBufSize;
436	fgets(acBuffer, sizeof(acBuffer), pfSetupHandle);
437	cBufSize = strlen(acBuffer);
438	/* The script must return the name of the interface followed by a carriage return as the
439	first line of its output. We need a null-terminated string. */
440	if ((cBufSize < 2) \|\| (acBuffer[cBufSize - 1] != '\n'))
441	{
442	pclose(pfSetupHandle);
443	LogRel(("The TAP interface setup script did not return the name of a TAP device.\n"));
444	return VERR_HOSTIF_INIT_FAILED;
445	}
446	/* Overwrite the terminating newline character. */
447	acBuffer[cBufSize - 1] = 0;
448	RTStrAPrintf(&pData->pszDeviceName, "%s", acBuffer);
449	}
450	int rc = pclose(pfSetupHandle);
451	if (!WIFEXITED(rc))
452	{
453	LogRel(("The TAP interface setup script terminated abnormally.\n"));
454	return VERR_HOSTIF_INIT_FAILED;
455	}
456	if (WEXITSTATUS(rc) != 0)
457	{
458	LogRel(("The TAP interface setup script returned a non-zero exit code.\n"));
459	return VERR_HOSTIF_INIT_FAILED;
460	}
461	return VINF_SUCCESS;
462	}
463
464
465	/**
466	* Calls OS-specific TAP terminate application/script.
467	*
468	* @returns VBox error code.
469	* @param pData The instance data.
470	*/
471	static int drvTAPTerminateApplication(PDRVTAP pData)
472	{
473	char *pszArgs[3];
474	pszArgs[0] = pData->pszTerminateApplication;
475	pszArgs[1] = pData->pszDeviceName;
476	pszArgs[2] = NULL;
477
478	Log2(("Starting TAP terminate application: %s %s\n", pData->pszTerminateApplication, pData->pszDeviceName));
479	RTPROCESS pid = NIL_RTPROCESS;
480	int rc = RTProcCreate(pszArgs[0], pszArgs, RTENV_DEFAULT, 0, &pid);
481	if (RT_SUCCESS(rc))
482	{
483	RTPROCSTATUS Status;
484	rc = RTProcWait(pid, 0, &Status);
485	if (RT_SUCCESS(rc))
486	{
487	if ( Status.iStatus == 0
488	&& Status.enmReason == RTPROCEXITREASON_NORMAL)
489	return VINF_SUCCESS;
490
491	LogRel(("TAP#%d: Error running TAP terminate application: %s\n", pData->pDrvIns->iInstance, pData->pszTerminateApplication));
492	}
493	else
494	LogRel(("TAP#%d: RTProcWait failed for: %s\n", pData->pDrvIns->iInstance, pData->pszTerminateApplication));
495	}
496	else
497	{
498	/* Bad. RTProcCreate() failed! */
499	LogRel(("TAP#%d: Failed to fork() process for running TAP terminate application: %s\n", pData->pDrvIns->iInstance,
500	pData->pszTerminateApplication, strerror(errno)));
501	}
502	return VERR_HOSTIF_TERM_FAILED;
503	}
504
505	#endif /* RT_OS_SOLARIS */
506
507
508	#ifdef RT_OS_SOLARIS
509	# ifdef VBOX_WITH_CROSSBOW
510	/**
511	* Crossbow: Open & configure the virtual NIC.
512	*
513	* @returns VBox error code.
514	* @param pData The instance data.
515	*/
516	static int SolarisOpenVNIC(PDRVTAP pData)
517	{
518	/*
519	* Open & bind the NIC using the datalink provider routine.
520	*/
521	int rc = g_pfnLibDlpiOpen(pData->pszDeviceName, &pData->pDeviceHandle, DLPI_RAW);
522	if (rc != DLPI_SUCCESS)
523	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
524	N_("Failed to open VNIC \"%s\" in raw mode"), pData->pszDeviceName);
525
526	dlpi_info_t vnicInfo;
527	rc = g_pfnLibDlpiInfo(pData->pDeviceHandle, &vnicInfo, 0);
528	if (rc == DLPI_SUCCESS)
529	{
530	if (vnicInfo.di_mactype == DL_ETHER)
531	{
532	rc = g_pfnLibDlpiBind(pData->pDeviceHandle, DLPI_ANY_SAP, NULL);
533	if (rc == DLPI_SUCCESS)
534	{
535	rc = g_pfnLibDlpiSetPhysAddr(pData->pDeviceHandle, DL_CURR_PHYS_ADDR, &pData->MacAddress, ETHERADDRL);
536	if (rc == DLPI_SUCCESS)
537	{
538	rc = g_pfnLibDlpiPromiscon(pData->pDeviceHandle, DL_PROMISC_SAP);
539	if (rc == DLPI_SUCCESS)
540	{
541	/* Need to use DL_PROMIS_PHYS (not multicast) as we cannot be sure what the guest needs. */
542	rc = g_pfnLibDlpiPromiscon(pData->pDeviceHandle, DL_PROMISC_PHYS);
543	if (rc == DLPI_SUCCESS)
544	{
545	pData->FileDevice = g_pfnLibDlpiFd(pData->pDeviceHandle);
546	if (pData->FileDevice >= 0)
547	{
548	Log(("SolarisOpenVNIC: %s -> %d\n", pData->pszDeviceName, pData->FileDevice));
549	return VINF_SUCCESS;
550	}
551
552	rc = PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
553	N_("Failed to obtain file descriptor for VNIC"));
554	}
555	else
556	rc = PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
557	N_("Failed to set appropriate promiscous mode"));
558	}
559	else
560	rc = PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
561	N_("Failed to activate promiscous mode for VNIC"));
562	}
563	else
564	rc = PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
565	N_("Failed to set physical address for VNIC"));
566	}
567	else
568	rc = PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
569	N_("Failed to bind VNIC"));
570	}
571	else
572	rc = PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
573	N_("VNIC type is not ethernet"));
574	}
575	else
576	rc = PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
577	N_("Failed to obtain VNIC info"));
578	g_pfnLibDlpiClose(pData->pDeviceHandle);
579	return rc;
580	}
581
582
583	/**
584	* Crossbow: Converts a Solaris DLPI error code to a VBox error code.
585	*
586	* @returns corresponding VBox error code.
587	* @param rc DLPI error code (DLPI_* defines).
588	*/
589	static int SolarisDLPIErr2VBoxErr(int rc)
590	{
591	switch (rc)
592	{
593	case DLPI_SUCCESS: return VINF_SUCCESS;
594	case DLPI_EINVAL: return VERR_INVALID_PARAMETER;
595	case DLPI_ELINKNAMEINVAL: return VERR_INVALID_NAME;
596	case DLPI_EINHANDLE: return VERR_INVALID_HANDLE;
597	case DLPI_ETIMEDOUT: return VERR_TIMEOUT;
598	case DLPI_FAILURE: return VERR_GENERAL_FAILURE;
599
600	case DLPI_EVERNOTSUP:
601	case DLPI_EMODENOTSUP:
602	case DLPI_ERAWNOTSUP:
603	/* case DLPI_ENOTENOTSUP: */
604	case DLPI_EUNAVAILSAP: return VERR_NOT_SUPPORTED;
605
606	/* Define VBox error codes for these, if really needed. */
607	case DLPI_ENOLINK:
608	case DLPI_EBADLINK:
609	/* case DLPI_ENOTEIDINVAL: */
610	case DLPI_EBADMSG:
611	case DLPI_ENOTSTYLE2: return VERR_GENERAL_FAILURE;
612	}
613
614	AssertMsgFailed(("SolarisDLPIErr2VBoxErr: Unhandled error %d\n", rc));
615	return VERR_UNRESOLVED_ERROR;
616	}
617
618	# else /* VBOX_WITH_CROSSBOW */
619
620	/** From net/if_tun.h, installed by Universal TUN/TAP driver */
621	# define TUNNEWPPA (('T'<<16) \| 0x0001)
622	/** Whether to enable ARP for TAP. */
623	# define VBOX_SOLARIS_TAP_ARP 1
624
625	/**
626	* Creates/Attaches TAP device to IP.
627	*
628	* @returns VBox error code.
629	* @param pData The instance data.
630	*/
631	static DECLCALLBACK(int) SolarisTAPAttach(PDRVTAP pData)
632	{
633	LogFlow(("SolarisTapAttach: pData=%p\n", pData));
634
635
636	int IPFileDes = open("/dev/udp", O_RDWR, 0);
637	if (IPFileDes < 0)
638	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
639	N_("Failed to open /dev/udp. errno=%d"), errno);
640
641	int TapFileDes = open("/dev/tap", O_RDWR, 0);
642	if (TapFileDes < 0)
643	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
644	N_("Failed to open /dev/tap for TAP. errno=%d"), errno);
645
646	/* Use the PPA from the ifname if possible (e.g "tap2", then use 2 as PPA) */
647	int iPPA = -1;
648	if (pData->pszDeviceName)
649	{
650	size_t cch = strlen(pData->pszDeviceName);
651	if (cch > 1 && isdigit(pData->pszDeviceName[cch - 1]) != 0)
652	iPPA = pData->pszDeviceName[cch - 1] - '0';
653	}
654
655	struct strioctl ioIF;
656	ioIF.ic_cmd = TUNNEWPPA;
657	ioIF.ic_len = sizeof(iPPA);
658	ioIF.ic_dp = (char *)(&iPPA);
659	ioIF.ic_timout = 0;
660	iPPA = ioctl(TapFileDes, I_STR, &ioIF);
661	if (iPPA < 0)
662	{
663	close(TapFileDes);
664	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_IOCTL, RT_SRC_POS,
665	N_("Failed to get new interface. errno=%d"), errno);
666	}
667
668	int InterfaceFD = open("/dev/tap", O_RDWR, 0);
669	if (!InterfaceFD)
670	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_PDM_HIF_OPEN_FAILED, RT_SRC_POS,
671	N_("Failed to open interface /dev/tap. errno=%d"), errno);
672
673	if (ioctl(InterfaceFD, I_PUSH, "ip") == -1)
674	{
675	close(InterfaceFD);
676	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_IOCTL, RT_SRC_POS,
677	N_("Failed to push IP. errno=%d"), errno);
678	}
679
680	struct lifreq ifReq;
681	memset(&ifReq, 0, sizeof(ifReq));
682	if (ioctl(InterfaceFD, SIOCGLIFFLAGS, &ifReq) == -1)
683	LogRel(("TAP#%d: Failed to get interface flags.\n", pData->pDrvIns->iInstance));
684
685	ifReq.lifr_ppa = iPPA;
686	RTStrPrintf (ifReq.lifr_name, sizeof(ifReq.lifr_name), pData->pszDeviceName);
687
688	if (ioctl(InterfaceFD, SIOCSLIFNAME, &ifReq) == -1)
689	LogRel(("TAP#%d: Failed to set PPA. errno=%d\n", pData->pDrvIns->iInstance, errno));
690
691	if (ioctl(InterfaceFD, SIOCGLIFFLAGS, &ifReq) == -1)
692	LogRel(("TAP#%d: Failed to get interface flags after setting PPA. errno=%d\n", pData->pDrvIns->iInstance, errno));
693
694	#ifdef VBOX_SOLARIS_TAP_ARP
695	/* Interface */
696	if (ioctl(InterfaceFD, I_PUSH, "arp") == -1)
697	LogRel(("TAP#%d: Failed to push ARP to Interface FD. errno=%d\n", pData->pDrvIns->iInstance, errno));
698
699	/* IP */
700	if (ioctl(IPFileDes, I_POP, NULL) == -1)
701	LogRel(("TAP#%d: Failed I_POP from IP FD. errno=%d\n", pData->pDrvIns->iInstance, errno));
702
703	if (ioctl(IPFileDes, I_PUSH, "arp") == -1)
704	LogRel(("TAP#%d: Failed to push ARP to IP FD. errno=%d\n", pData->pDrvIns->iInstance, errno));
705
706	/* ARP */
707	int ARPFileDes = open("/dev/tap", O_RDWR, 0);
708	if (ARPFileDes < 0)
709	LogRel(("TAP#%d: Failed to open for /dev/tap for ARP. errno=%d", pData->pDrvIns->iInstance, errno));
710
711	if (ioctl(ARPFileDes, I_PUSH, "arp") == -1)
712	LogRel(("TAP#%d: Failed to push ARP to ARP FD. errno=%d\n", pData->pDrvIns->iInstance, errno));
713
714	ioIF.ic_cmd = SIOCSLIFNAME;
715	ioIF.ic_timout = 0;
716	ioIF.ic_len = sizeof(ifReq);
717	ioIF.ic_dp = (char *)&ifReq;
718	if (ioctl(ARPFileDes, I_STR, &ioIF) == -1)
719	LogRel(("TAP#%d: Failed to set interface name to ARP.\n", pData->pDrvIns->iInstance));
720	#endif
721
722	/* We must use I_LINK and not I_PLINK as I_PLINK makes the link persistent.
723	* Then we would not be able unlink the interface if we reuse it.
724	* Even 'unplumb' won't work after that.
725	*/
726	int IPMuxID = ioctl(IPFileDes, I_LINK, InterfaceFD);
727	if (IPMuxID == -1)
728	{
729	close(InterfaceFD);
730	#ifdef VBOX_SOLARIS_TAP_ARP
731	close(ARPFileDes);
732	#endif
733	LogRel(("TAP#%d: Cannot link TAP device to IP.\n", pData->pDrvIns->iInstance));
734	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_IOCTL, RT_SRC_POS,
735	N_("Failed to link TAP device to IP. Check TAP interface name. errno=%d"), errno);
736	}
737
738	#ifdef VBOX_SOLARIS_TAP_ARP
739	int ARPMuxID = ioctl(IPFileDes, I_LINK, ARPFileDes);
740	if (ARPMuxID == -1)
741	LogRel(("TAP#%d: Failed to link TAP device to ARP\n", pData->pDrvIns->iInstance));
742
743	close(ARPFileDes);
744	#endif
745	close(InterfaceFD);
746
747	/* Reuse ifReq */
748	memset(&ifReq, 0, sizeof(ifReq));
749	RTStrPrintf (ifReq.lifr_name, sizeof(ifReq.lifr_name), pData->pszDeviceName);
750	ifReq.lifr_ip_muxid = IPMuxID;
751	#ifdef VBOX_SOLARIS_TAP_ARP
752	ifReq.lifr_arp_muxid = ARPMuxID;
753	#endif
754
755	if (ioctl(IPFileDes, SIOCSLIFMUXID, &ifReq) == -1)
756	{
757	#ifdef VBOX_SOLARIS_TAP_ARP
758	ioctl(IPFileDes, I_PUNLINK, ARPMuxID);
759	#endif
760	ioctl(IPFileDes, I_PUNLINK, IPMuxID);
761	close(IPFileDes);
762	LogRel(("TAP#%d: Failed to set Mux ID.\n", pData->pDrvIns->iInstance));
763	return PDMDrvHlpVMSetError(pData->pDrvIns, VERR_HOSTIF_IOCTL, RT_SRC_POS,
764	N_("Failed to set Mux ID. Check TAP interface name. errno=%d"), errno);
765	}
766
767	pData->FileDevice = (RTFILE)TapFileDes;
768	pData->IPFileDevice = (RTFILE)IPFileDes;
769
770	return VINF_SUCCESS;
771	}
772
773	# endif /* VBOX_WITH_CROSSBOW */
774	#endif /* RT_OS_SOLARIS */
775
776
777	/**
778	* Queries an interface to the driver.
779	*
780	* @returns Pointer to interface.
781	* @returns NULL if the interface was not supported by the driver.
782	* @param pInterface Pointer to this interface structure.
783	* @param enmInterface The requested interface identification.
784	* @thread Any thread.
785	*/
786	static DECLCALLBACK(void *) drvTAPQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
787	{
788	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
789	PDRVTAP pData = PDMINS2DATA(pDrvIns, PDRVTAP);
790	switch (enmInterface)
791	{
792	case PDMINTERFACE_BASE:
793	return &pDrvIns->IBase;
794	case PDMINTERFACE_NETWORK_CONNECTOR:
795	return &pData->INetworkConnector;
796	default:
797	return NULL;
798	}
799	}
800
801
802	/**
803	* Destruct a driver instance.
804	*
805	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
806	* resources can be freed correctly.
807	*
808	* @param pDrvIns The driver instance data.
809	*/
810	static DECLCALLBACK(void) drvTAPDestruct(PPDMDRVINS pDrvIns)
811	{
812	LogFlow(("drvTAPDestruct\n"));
813	PDRVTAP pData = PDMINS2DATA(pDrvIns, PDRVTAP);
814
815	/*
816	* Terminate the control pipe.
817	*/
818	if (pData->PipeWrite != NIL_RTFILE)
819	{
820	int rc = RTFileClose(pData->PipeWrite);
821	AssertRC(rc);
822	pData->PipeWrite = NIL_RTFILE;
823	}
824	if (pData->PipeRead != NIL_RTFILE)
825	{
826	int rc = RTFileClose(pData->PipeRead);
827	AssertRC(rc);
828	pData->PipeRead = NIL_RTFILE;
829	}
830
831	#ifdef RT_OS_SOLARIS
832	/** @todo r=bird: This does need checking against ConsoleImpl2.cpp if used on non-solaris systems. */
833	if (pData->FileDevice != NIL_RTFILE)
834	{
835	int rc = RTFileClose(pData->FileDevice);
836	AssertRC(rc);
837	pData->FileDevice = NIL_RTFILE;
838	}
839
840	# ifndef VBOX_WITH_CROSSBOW
841	if (pData->IPFileDevice != NIL_RTFILE)
842	{
843	int rc = RTFileClose(pData->IPFileDevice);
844	AssertRC(rc);
845	pData->IPFileDevice = NIL_RTFILE;
846	}
847	# endif
848
849	/*
850	* Call TerminateApplication after closing the device otherwise
851	* TerminateApplication would not be able to unplumb it.
852	*/
853	if (pData->pszTerminateApplication)
854	drvTAPTerminateApplication(pData);
855
856	#endif /* RT_OS_SOLARIS */
857
858	#ifdef RT_OS_SOLARIS
859	if (!pData->fStatic)
860	RTStrFree(pData->pszDeviceName); /* allocated by drvTAPSetupApplication */
861	else
862	MMR3HeapFree(pData->pszDeviceName);
863	#else
864	MMR3HeapFree(pData->pszDeviceName);
865	#endif
866	MMR3HeapFree(pData->pszSetupApplication);
867	MMR3HeapFree(pData->pszTerminateApplication);
868	}
869
870
871	/**
872	* Construct a TAP network transport driver instance.
873	*
874	* @returns VBox status.
875	* @param pDrvIns The driver instance data.
876	* If the registration structure is needed, pDrvIns->pDrvReg points to it.
877	* @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
878	* of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
879	* iInstance it's expected to be used a bit in this function.
880	*/
881	static DECLCALLBACK(int) drvTAPConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
882	{
883	PDRVTAP pData = PDMINS2DATA(pDrvIns, PDRVTAP);
884
885	/*
886	* Init the static parts.
887	*/
888	pData->pDrvIns = pDrvIns;
889	pData->FileDevice = NIL_RTFILE;
890	pData->pszDeviceName = NULL;
891	#ifdef RT_OS_SOLARIS
892	# ifdef VBOX_WITH_CROSSBOW
893	pData->pDeviceHandle = NULL;
894	# else
895	pData->IPFileDevice = NIL_RTFILE;
896	# endif
897	pData->fStatic = true;
898	#endif
899	pData->pszSetupApplication = NULL;
900	pData->pszTerminateApplication = NULL;
901
902	/* IBase */
903	pDrvIns->IBase.pfnQueryInterface = drvTAPQueryInterface;
904	/* INetwork */
905	pData->INetworkConnector.pfnSend = drvTAPSend;
906	pData->INetworkConnector.pfnSetPromiscuousMode = drvTAPSetPromiscuousMode;
907	pData->INetworkConnector.pfnNotifyLinkChanged = drvTAPNotifyLinkChanged;
908
909	/*
910	* Validate the config.
911	*/
912	if (!CFGMR3AreValuesValid(pCfgHandle, "Device\0InitProg\0TermProg\0FileHandle\0TAPSetupApplication\0TAPTerminateApplication\0MAC"))
913	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, "");
914
915	/*
916	* Check that no-one is attached to us.
917	*/
918	int rc = pDrvIns->pDrvHlp->pfnAttach(pDrvIns, NULL);
919	if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
920	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_NO_ATTACH,
921	N_("Configuration error: Cannot attach drivers to the TAP driver"));
922
923	/*
924	* Query the network port interface.
925	*/
926	pData->pPort = (PPDMINETWORKPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_NETWORK_PORT);
927	if (!pData->pPort)
928	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
929	N_("Configuration error: The above device/driver didn't export the network port interface"));
930
931	/*
932	* Read the configuration.
933	*/
934	#if defined(RT_OS_SOLARIS) /** @todo Other platforms' TAP code should be moved here from ConsoleImpl & VBoxBFE. */
935	rc = CFGMR3QueryStringAlloc(pCfgHandle, "TAPSetupApplication", &pData->pszSetupApplication);
936	if (VBOX_SUCCESS(rc))
937	{
938	if (!RTPathExists(pData->pszSetupApplication))
939	return PDMDrvHlpVMSetError(pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
940	N_("Invalid TAP setup program path: %s"), pData->pszSetupApplication);
941	}
942	else if (rc != VERR_CFGM_VALUE_NOT_FOUND)
943	return PDMDRV_SET_ERROR(pDrvIns, rc, N_("Configuration error: failed to query \"TAPTerminateApplication\""));
944
945	rc = CFGMR3QueryStringAlloc(pCfgHandle, "TAPTerminateApplication", &pData->pszTerminateApplication);
946	if (VBOX_SUCCESS(rc))
947	{
948	if (!RTPathExists(pData->pszTerminateApplication))
949	return PDMDrvHlpVMSetError(pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
950	N_("Invalid TAP terminate program path: %s"), pData->pszTerminateApplication);
951	}
952	else if (rc != VERR_CFGM_VALUE_NOT_FOUND)
953	return PDMDRV_SET_ERROR(pDrvIns, rc, N_("Configuration error: failed to query \"TAPTerminateApplication\""));
954
955	# ifdef VBOX_WITH_CROSSBOW
956	rc = CFGMR3QueryBytes(pCfgHandle, "MAC", &pData->MacAddress, sizeof(pData->MacAddress));
957	if (VBOX_FAILURE(rc))
958	return PDMDRV_SET_ERROR(pDrvIns, rc, N_("Configuration error: Failed to query \"MAC\""));
959	# endif
960
961	rc = CFGMR3QueryStringAlloc(pCfgHandle, "Device", &pData->pszDeviceName);
962	if (VBOX_FAILURE(rc))
963	pData->fStatic = false;
964
965	/* Obtain the device name from the setup application (if none was specified). */
966	if (pData->pszSetupApplication)
967	{
968	rc = drvTAPSetupApplication(pData);
969	if (VBOX_FAILURE(rc))
970	return PDMDrvHlpVMSetError(pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
971	N_("Error running TAP setup application. rc=%d"), rc);
972	}
973
974	/*
975	* Do the setup.
976	*/
977	# ifdef VBOX_WITH_CROSSBOW
978	if (!VBoxLibDlpiFound())
979	{
980	return PDMDrvHlpVMSetError(pDrvIns, VERR_HOSTIF_INIT_FAILED, RT_SRC_POS,
981	N_("Failed to load library %s required for host interface networking."), LIB_DLPI);
982	}
983	rc = SolarisOpenVNIC(pData);
984	# else
985	rc = SolarisTAPAttach(pData);
986	# endif
987	if (VBOX_FAILURE(rc))
988	return rc;
989
990	#else /* !RT_OS_SOLARIS */
991
992	int32_t iFile;
993	rc = CFGMR3QueryS32(pCfgHandle, "FileHandle", &iFile);
994	if (VBOX_FAILURE(rc))
995	return PDMDRV_SET_ERROR(pDrvIns, rc,
996	N_("Configuration error: Query for \"FileHandle\" 32-bit signed integer failed"));
997	pData->FileDevice = (RTFILE)iFile;
998	if (!RTFileIsValid(pData->FileDevice))
999	return PDMDrvHlpVMSetError(pDrvIns, VERR_INVALID_HANDLE, RT_SRC_POS,
1000	N_("The TAP file handle %RTfile is not valid"), pData->FileDevice);
1001	#endif /* !RT_OS_SOLARIS */
1002
1003	/*
1004	* Make sure the descriptor is non-blocking and valid.
1005	*
1006	* We should actually query if it's a TAP device, but I haven't
1007	* found any way to do that.
1008	*/
1009	if (fcntl(pData->FileDevice, F_SETFL, O_NONBLOCK) == -1)
1010	return PDMDrvHlpVMSetError(pDrvIns, VERR_HOSTIF_IOCTL, RT_SRC_POS,
1011	N_("Configuration error: Failed to configure /dev/net/tun. errno=%d"), errno);
1012	/** @todo determine device name. This can be done by reading the link /proc/<pid>/fd/<fd> */
1013	Log(("drvTAPContruct: %d (from fd)\n", pData->FileDevice));
1014	rc = VINF_SUCCESS;
1015
1016	/*
1017	* Create the control pipe.
1018	*/
1019	int fds[2];
1020	#ifdef RT_OS_L4
1021	/* XXX We need to tell the library which interface we are using */
1022	fds[0] = vboxrtLinuxFd2VBoxFd(VBOXRT_FT_TAP, 0);
1023	#endif
1024	if (pipe(&fds[0]) != 0) /** @todo RTPipeCreate() or something... */
1025	{
1026	int rc = RTErrConvertFromErrno(errno);
1027	AssertRC(rc);
1028	return rc;
1029	}
1030	pData->PipeRead = fds[0];
1031	pData->PipeWrite = fds[1];
1032
1033	/*
1034	* Create the async I/O thread.
1035	*/
1036	rc = PDMDrvHlpPDMThreadCreate(pDrvIns, &pData->pThread, pData, drvTAPAsyncIoThread, drvTapAsyncIoWakeup, 128 * _1K, RTTHREADTYPE_IO, "TAP");
1037	AssertRCReturn(rc, rc);
1038
1039	#ifdef VBOX_WITH_STATISTICS
1040	/*
1041	* Statistics.
1042	*/
1043	PDMDrvHlpSTAMRegisterF(pDrvIns, &pData->StatPktSent, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of sent packets.", "/Drivers/TAP%d/Packets/Sent", pDrvIns->iInstance);
1044	PDMDrvHlpSTAMRegisterF(pDrvIns, &pData->StatPktSentBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of sent bytes.", "/Drivers/TAP%d/Bytes/Sent", pDrvIns->iInstance);
1045	PDMDrvHlpSTAMRegisterF(pDrvIns, &pData->StatPktRecv, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of received packets.", "/Drivers/TAP%d/Packets/Received", pDrvIns->iInstance);
1046	PDMDrvHlpSTAMRegisterF(pDrvIns, &pData->StatPktRecvBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of received bytes.", "/Drivers/TAP%d/Bytes/Received", pDrvIns->iInstance);
1047	PDMDrvHlpSTAMRegisterF(pDrvIns, &pData->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet transmit runs.", "/Drivers/TAP%d/Transmit", pDrvIns->iInstance);
1048	PDMDrvHlpSTAMRegisterF(pDrvIns, &pData->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling packet receive runs.", "/Drivers/TAP%d/Receive", pDrvIns->iInstance);
1049	#endif /* VBOX_WITH_STATISTICS */
1050
1051	return rc;
1052	}
1053
1054
1055	/**
1056	* TAP network transport driver registration record.
1057	*/
1058	const PDMDRVREG g_DrvHostInterface =
1059	{
1060	/* u32Version */
1061	PDM_DRVREG_VERSION,
1062	/* szDriverName */
1063	"HostInterface",
1064	/* pszDescription */
1065	"TAP Network Transport Driver",
1066	/* fFlags */
1067	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1068	/* fClass. */
1069	PDM_DRVREG_CLASS_NETWORK,
1070	/* cMaxInstances */
1071	~0,
1072	/* cbInstance */
1073	sizeof(DRVTAP),
1074	/* pfnConstruct */
1075	drvTAPConstruct,
1076	/* pfnDestruct */
1077	drvTAPDestruct,
1078	/* pfnIOCtl */
1079	NULL,
1080	/* pfnPowerOn */
1081	NULL,
1082	/* pfnReset */
1083	NULL,
1084	/* pfnSuspend */
1085	NULL, /** @todo Do power on, suspend and resume handlers! */
1086	/* pfnResume */
1087	NULL,
1088	/* pfnDetach */
1089	NULL,
1090	/* pfnPowerOff */
1091	NULL
1092	};

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source: vbox/trunk/src/VBox/Devices/Network/DrvTAP.cpp@ 9594

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