DrvNAT.cpp@ 22458

最後變更在這個檔案從22458是 22458,由 vboxsync 提交於 16 年前
Fixed bad STAM_PROFILE_STOP usage in drvNATRecv
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Author Date Id Revision`
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1	/* $Id: DrvNAT.cpp 22458 2009-08-26 09:11:26Z vboxsync $ */
2	/** @file
3	* DrvNAT - NAT network transport driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2009 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.alldomusa.eu.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	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_DRV_NAT
27	#define __STDC_LIMIT_MACROS
28	#define __STDC_CONSTANT_MACROS
29	#include "slirp/libslirp.h"
30	#include "slirp/ctl.h"
31	#include <VBox/pdmdrv.h>
32	#include <iprt/assert.h>
33	#include <iprt/file.h>
34	#include <iprt/mem.h>
35	#include <iprt/string.h>
36	#include <iprt/critsect.h>
37	#include <iprt/cidr.h>
38	#include <iprt/stream.h>
39
40	#include "Builtins.h"
41
42	#ifndef RT_OS_WINDOWS
43	# include <unistd.h>
44	# include <fcntl.h>
45	# include <poll.h>
46	# include <errno.h>
47	#endif
48	#ifdef RT_OS_FREEBSD
49	# include <netinet/in.h>
50	#endif
51	#include <iprt/semaphore.h>
52	#include <iprt/req.h>
53
54	#define COUNTERS_INIT
55	#include "counters.h"
56
57
58	/*******************************************************************************
59	* Defined Constants And Macros *
60	*******************************************************************************/
61	/**
62	* @todo: This is a bad hack to prevent freezing the guest during high network
63	* activity. This needs to be fixed properly.
64	*/
65	#define VBOX_NAT_DELAY_HACK
66	#define SLIRP_SPLIT_CAN_OUTPUT 1
67
68	#define GET_EXTRADATA(pthis, node, name, rc, type, type_name, var) \
69	do { \
70	(rc) = CFGMR3Query ## type((node), name, &(var)); \
71	if (RT_FAILURE((rc)) && (rc) != VERR_CFGM_VALUE_NOT_FOUND) \
72	return PDMDrvHlpVMSetError((pthis)->pDrvIns, (rc), RT_SRC_POS, N_("NAT#%d: configuration query for \""name"\" " #type_name " failed"), \
73	(pthis)->pDrvIns->iInstance); \
74	}while(0)
75
76	#define GET_ED_STRICT(pthis, node, name, rc, type, type_name, var) \
77	do { \
78	(rc) = CFGMR3Query ## type((node), name, &(var)); \
79	if (RT_FAILURE((rc))) \
80	return PDMDrvHlpVMSetError((pthis)->pDrvIns, (rc), RT_SRC_POS, N_("NAT#%d: configuration query for \""name"\" " #type_name " failed"), \
81	(pthis)->pDrvIns->iInstance); \
82	}while(0)
83
84	#define GET_EXTRADATA_N(pthis, node, name, rc, type, type_name, var, var_size) \
85	do { \
86	(rc) = CFGMR3Query ## type((node), name, &(var), var_size); \
87	if (RT_FAILURE((rc)) && (rc) != VERR_CFGM_VALUE_NOT_FOUND) \
88	return PDMDrvHlpVMSetError((pthis)->pDrvIns, (rc), RT_SRC_POS, N_("NAT#%d: configuration query for \""name"\" " #type_name " failed"), \
89	(pthis)->pDrvIns->iInstance); \
90	}while(0)
91
92	#define GET_BOOL(rc, pthis, node, name, var) \
93	GET_EXTRADATA(pthis, node, name, (rc), Bool, bolean, (var))
94	#define GET_STRING(rc, pthis, node, name, var, var_size) \
95	GET_EXTRADATA_N(pthis, node, name, (rc), String, string, (var), (var_size))
96	#define GET_STRING_ALLOC(rc, pthis, node, name, var) \
97	GET_EXTRADATA(pthis, node, name, (rc), StringAlloc, string, (var))
98	#define GET_S32(rc, pthis, node, name, var) \
99	GET_EXTRADATA(pthis, node, name, (rc), S32, int, (var))
100	#define GET_S32_STRICT(rc, pthis, node, name, var) \
101	GET_ED_STRICT(pthis, node, name, (rc), S32, int, (var))
102
103
104
105	#define DOGETIP(rc, node, instance, status, x) \
106	do { \
107	char sz##x[32]; \
108	GET_STRING((rc), (node), (instance), #x, sz ## x[0], sizeof(sz ## x)); \
109	if (rc != VERR_CFGM_VALUE_NOT_FOUND) \
110	(status) = inet_aton(sz ## x, &x); \
111	}while(0)
112
113	#define GETIP_DEF(rc, node, instance, x, def) \
114	do \
115	{ \
116	int status = 0; \
117	DOGETIP((rc), (node), (instance), status, x); \
118	if (status == 0 \|\| rc == VERR_CFGM_VALUE_NOT_FOUND) \
119	x.s_addr = def; \
120	}while(0)
121
122	#define QUEUE_SIZE 50
123
124	/*******************************************************************************
125	* Structures and Typedefs *
126	*******************************************************************************/
127	/**
128	* NAT network transport driver instance data.
129	*/
130	typedef struct DRVNAT
131	{
132	/** The network interface. */
133	PDMINETWORKCONNECTOR INetworkConnector;
134	/** The port we're attached to. */
135	PPDMINETWORKPORT pPort;
136	/** The network config of the port we're attached to. */
137	PPDMINETWORKCONFIG pConfig;
138	/** Pointer to the driver instance. */
139	PPDMDRVINS pDrvIns;
140	/** Link state */
141	PDMNETWORKLINKSTATE enmLinkState;
142	/** NAT state for this instance. */
143	PNATState pNATState;
144	/** TFTP directory prefix. */
145	char *pszTFTPPrefix;
146	/** Boot file name to provide in the DHCP server response. */
147	char *pszBootFile;
148	/** tftp server name to provide in the DHCP server response. */
149	char *pszNextServer;
150	/* polling thread */
151	PPDMTHREAD pSlirpThread;
152	/** Queue for NAT-thread-external events. */
153	PRTREQQUEUE pSlirpReqQueue;
154	#ifndef SLIRP_SPLIT_CAN_OUTPUT
155	/* Receive PDM queue (deliver packets to the guest) */
156	PPDMQUEUE pRecvQueue;
157	#endif
158
159	#ifdef VBOX_WITH_SLIRP_MT
160	PPDMTHREAD pGuestThread;
161	#endif
162	#ifndef RT_OS_WINDOWS
163	/** The write end of the control pipe. */
164	RTFILE PipeWrite;
165	/** The read end of the control pipe. */
166	RTFILE PipeRead;
167	#else
168	/** for external notification */
169	HANDLE hWakeupEvent;
170	#endif
171
172	#define DRV_PROFILE_COUNTER(name, dsc) STAMPROFILE Stat ## name
173	#define DRV_COUNTING_COUNTER(name, dsc) STAMCOUNTER Stat ## name
174	#include "counters.h"
175	#ifdef SLIRP_SPLIT_CAN_OUTPUT
176	/** thread delivering packets for receiving by the guest */
177	PPDMTHREAD pRecvThread;
178	/** event to wakeup the guest receive thread */
179	RTSEMEVENT EventRecv;
180	/** Receive Req queue (deliver packets to the guest) */
181	PRTREQQUEUE pRecvReqQueue;
182	#endif
183	} DRVNAT;
184	/** Pointer the NAT driver instance data. */
185	typedef DRVNAT *PDRVNAT;
186
187	/**
188	* NAT queue item.
189	*/
190	typedef struct DRVNATQUEUITEM
191	{
192	/** The core part owned by the queue manager. */
193	PDMQUEUEITEMCORE Core;
194	/** The buffer for output to guest. */
195	const uint8_t *pu8Buf;
196	/* size of buffer */
197	size_t cb;
198	void *mbuf;
199	} DRVNATQUEUITEM;
200	/** Pointer to a NAT queue item. */
201	typedef DRVNATQUEUITEM *PDRVNATQUEUITEM;
202
203
204	static void drvNATNotifyNATThread(PDRVNAT pThis);
205
206
207	/** Converts a pointer to NAT::INetworkConnector to a PRDVNAT. */
208	#define PDMINETWORKCONNECTOR_2_DRVNAT(pInterface) ( (PDRVNAT)((uintptr_t)pInterface - RT_OFFSETOF(DRVNAT, INetworkConnector)) )
209
210
211	#ifdef SLIRP_SPLIT_CAN_OUTPUT
212
213	static DECLCALLBACK(int) drvNATRecv(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
214	{
215	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
216
217	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
218	return VINF_SUCCESS;
219
220	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
221	{
222	RTReqProcess(pThis->pRecvReqQueue, 0);
223	RTSemEventWait(pThis->EventRecv, RT_INDEFINITE_WAIT);
224	}
225	return VINF_SUCCESS;
226	}
227
228
229	static DECLCALLBACK(int) drvNATRecvWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
230	{
231	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
232	int rc = RTSemEventSignal(pThis->EventRecv);
233
234	STAM_COUNTER_INC(&pThis->StatNATRecvWakeups);
235	AssertReleaseRC(rc);
236	return VINF_SUCCESS;
237	}
238
239
240	static DECLCALLBACK(void) drvNATRecvWorker(PDRVNAT pThis, uint8_t *pu8Buf, int cb)
241	{
242	STAM_PROFILE_START(&pThis->StatNATRecv, a);
243
244	STAM_PROFILE_START(&pThis->StatNATRecvWait, b);
245	int rc = pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, RT_INDEFINITE_WAIT);
246	AssertMsgRC(rc, ("NAT: No RX available even on indefinite wait; rc=%Rrc", rc));
247
248	STAM_PROFILE_STOP(&pThis->StatNATRecvWait, b);
249
250	rc = pThis->pPort->pfnReceive(pThis->pPort, pu8Buf, cb);
251	AssertRC(rc);
252	RTMemFree(pu8Buf);
253
254	STAM_PROFILE_STOP(&pThis->StatNATRecv, a);
255	}
256
257	#endif /* SLIRP_SPLIT_CAN_OUTPUT */
258
259	/**
260	* Worker function for drvNATSend().
261	* @thread "NAT" thread.
262	*/
263	static void drvNATSendWorker(PDRVNAT pThis, const void *pvBuf, size_t cb)
264	{
265	Assert(pThis->enmLinkState == PDMNETWORKLINKSTATE_UP);
266	if (pThis->enmLinkState == PDMNETWORKLINKSTATE_UP)
267	slirp_input(pThis->pNATState, (uint8_t *)pvBuf, cb);
268	}
269
270
271	/**
272	* Called by the guest to send data to the network.
273	*
274	* @returns VBox status code.
275	* @param pInterface Pointer to the interface structure containing the called function pointer.
276	* @param pvBuf Data to send.
277	* @param cb Number of bytes to send.
278	* @thread EMT
279	*/
280	static DECLCALLBACK(int) drvNATSend(PPDMINETWORKCONNECTOR pInterface, const void *pvBuf, size_t cb)
281	{
282	PDRVNAT pThis = PDMINETWORKCONNECTOR_2_DRVNAT(pInterface);
283
284	LogFlow(("drvNATSend: pvBuf=%p cb=%#x\n", pvBuf, cb));
285	Log2(("drvNATSend: pvBuf=%p cb=%#x\n%.*Rhxd\n", pvBuf, cb, cb, pvBuf));
286
287	PRTREQ pReq = NULL;
288	int rc;
289	void *buf;
290
291	/* don't queue new requests when the NAT thread is about to stop */
292	if (pThis->pSlirpThread->enmState != PDMTHREADSTATE_RUNNING)
293	return VINF_SUCCESS;
294
295	#ifndef VBOX_WITH_SLIRP_MT
296	rc = RTReqAlloc(pThis->pSlirpReqQueue, &pReq, RTREQTYPE_INTERNAL);
297	#else
298	rc = RTReqAlloc((PRTREQQUEUE)slirp_get_queue(pThis->pNATState), &pReq, RTREQTYPE_INTERNAL);
299	#endif
300	AssertReleaseRC(rc);
301
302	/* @todo: Here we should get mbuf instead temporal buffer */
303	buf = RTMemAlloc(cb);
304	if (buf == NULL)
305	{
306	LogRel(("NAT: Can't allocate send buffer\n"));
307	return VERR_NO_MEMORY;
308	}
309	memcpy(buf, pvBuf, cb);
310
311	pReq->u.Internal.pfn = (PFNRT)drvNATSendWorker;
312	pReq->u.Internal.cArgs = 3;
313	pReq->u.Internal.aArgs[0] = (uintptr_t)pThis;
314	pReq->u.Internal.aArgs[1] = (uintptr_t)buf;
315	pReq->u.Internal.aArgs[2] = (uintptr_t)cb;
316	pReq->fFlags = RTREQFLAGS_VOID\|RTREQFLAGS_NO_WAIT;
317
318	rc = RTReqQueue(pReq, 0); /* don't wait, we have to wakeup the NAT thread fist */
319	AssertReleaseRC(rc);
320	drvNATNotifyNATThread(pThis);
321	LogFlow(("drvNATSend: end\n"));
322	return VINF_SUCCESS;
323	}
324
325
326	/**
327	* Get the NAT thread out of poll/WSAWaitForMultipleEvents
328	*/
329	static void drvNATNotifyNATThread(PDRVNAT pThis)
330	{
331	int rc;
332	#ifndef RT_OS_WINDOWS
333	/* kick select() */
334	rc = RTFileWrite(pThis->PipeWrite, "", 1, NULL);
335	#else
336	/* kick WSAWaitForMultipleEvents */
337	rc = WSASetEvent(pThis->hWakeupEvent);
338	#endif
339	AssertReleaseRC(rc);
340	}
341
342
343	/**
344	* Set promiscuous mode.
345	*
346	* This is called when the promiscuous mode is set. This means that there doesn't have
347	* to be a mode change when it's called.
348	*
349	* @param pInterface Pointer to the interface structure containing the called function pointer.
350	* @param fPromiscuous Set if the adaptor is now in promiscuous mode. Clear if it is not.
351	* @thread EMT
352	*/
353	static DECLCALLBACK(void) drvNATSetPromiscuousMode(PPDMINETWORKCONNECTOR pInterface, bool fPromiscuous)
354	{
355	LogFlow(("drvNATSetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
356	/* nothing to do */
357	}
358
359	/**
360	* Worker function for drvNATNotifyLinkChanged().
361	* @thread "NAT" thread.
362	*/
363	static void drvNATNotifyLinkChangedWorker(PDRVNAT pThis, PDMNETWORKLINKSTATE enmLinkState)
364	{
365	pThis->enmLinkState = enmLinkState;
366
367	switch (enmLinkState)
368	{
369	case PDMNETWORKLINKSTATE_UP:
370	LogRel(("NAT: link up\n"));
371	slirp_link_up(pThis->pNATState);
372	break;
373
374	case PDMNETWORKLINKSTATE_DOWN:
375	case PDMNETWORKLINKSTATE_DOWN_RESUME:
376	LogRel(("NAT: link down\n"));
377	slirp_link_down(pThis->pNATState);
378	break;
379
380	default:
381	AssertMsgFailed(("drvNATNotifyLinkChanged: unexpected link state %d\n", enmLinkState));
382	}
383	}
384
385
386	/**
387	* Notification on link status changes.
388	*
389	* @param pInterface Pointer to the interface structure containing the called function pointer.
390	* @param enmLinkState The new link state.
391	* @thread EMT
392	*/
393	static DECLCALLBACK(void) drvNATNotifyLinkChanged(PPDMINETWORKCONNECTOR pInterface, PDMNETWORKLINKSTATE enmLinkState)
394	{
395	PDRVNAT pThis = PDMINETWORKCONNECTOR_2_DRVNAT(pInterface);
396
397	LogFlow(("drvNATNotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
398
399	PRTREQ pReq = NULL;
400
401	/* don't queue new requests when the NAT thread is about to stop */
402	if (pThis->pSlirpThread->enmState != PDMTHREADSTATE_RUNNING)
403	return;
404
405	int rc = RTReqAlloc(pThis->pSlirpReqQueue, &pReq, RTREQTYPE_INTERNAL);
406	AssertReleaseRC(rc);
407	pReq->u.Internal.pfn = (PFNRT)drvNATNotifyLinkChangedWorker;
408	pReq->u.Internal.cArgs = 2;
409	pReq->u.Internal.aArgs[0] = (uintptr_t)pThis;
410	pReq->u.Internal.aArgs[1] = (uintptr_t)enmLinkState;
411	pReq->fFlags = RTREQFLAGS_VOID;
412	rc = RTReqQueue(pReq, 0); /* don't wait, we have to wakeup the NAT thread fist */
413	if (RT_LIKELY(rc == VERR_TIMEOUT))
414	{
415	drvNATNotifyNATThread(pThis);
416	rc = RTReqWait(pReq, RT_INDEFINITE_WAIT);
417	AssertReleaseRC(rc);
418	}
419	else
420	AssertReleaseRC(rc);
421	RTReqFree(pReq);
422	}
423
424	/**
425	* NAT thread handling the slirp stuff. The slirp implementation is single-threaded
426	* so we execute this enginre in a dedicated thread. We take care that this thread
427	* does not become the bottleneck: If the guest wants to send, a request is enqueued
428	* into the pSlirpReqQueue and handled asynchronously by this thread. If this thread
429	* wants to deliver packets to the guest, it enqueues a request into pRecvReqQueue
430	* which is later handled by the Recv thread.
431	*/
432	static DECLCALLBACK(int) drvNATAsyncIoThread(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
433	{
434	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
435	int nFDs = -1;
436	unsigned int ms;
437	#ifdef RT_OS_WINDOWS
438	DWORD event;
439	HANDLE *phEvents;
440	unsigned int cBreak = 0;
441	#else /* RT_OS_WINDOWS */
442	struct pollfd *polls = NULL;
443	unsigned int cPollNegRet = 0;
444	#endif /* !RT_OS_WINDOWS */
445
446	LogFlow(("drvNATAsyncIoThread: pThis=%p\n", pThis));
447
448	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
449	return VINF_SUCCESS;
450
451	#ifdef RT_OS_WINDOWS
452	phEvents = slirp_get_events(pThis->pNATState);
453	#endif /* RT_OS_WINDOWS */
454
455	/*
456	* Polling loop.
457	*/
458	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
459	{
460	nFDs = -1;
461	/*
462	* To prevent concurent execution of sending/receving threads
463	*/
464	#ifndef RT_OS_WINDOWS
465	nFDs = slirp_get_nsock(pThis->pNATState);
466	polls = NULL;
467	/* allocation for all sockets + Management pipe */
468	polls = (struct pollfd )RTMemAlloc((1 + nFDs) sizeof(struct pollfd) + sizeof(uint32_t));
469	if (polls == NULL)
470	return VERR_NO_MEMORY;
471
472	/* don't pass the managemant pipe */
473	slirp_select_fill(pThis->pNATState, &nFDs, &polls[1]);
474	ms = slirp_get_timeout_ms(pThis->pNATState);
475
476	polls[0].fd = pThis->PipeRead;
477	/* POLLRDBAND usually doesn't used on Linux but seems used on Solaris */
478	polls[0].events = POLLRDNORM\|POLLPRI\|POLLRDBAND;
479	polls[0].revents = 0;
480
481	int cChangedFDs = poll(polls, nFDs + 1, ms ? ms : -1);
482	if (cChangedFDs < 0)
483	{
484	if (errno == EINTR)
485	{
486	Log2(("NAT: signal was caught while sleep on poll\n"));
487	/* No error, just process all outstanding requests but don't wait */
488	cChangedFDs = 0;
489	}
490	else if (cPollNegRet++ > 128)
491	{
492	LogRel(("NAT:Poll returns (%s) suppressed %d\n", strerror(errno), cPollNegRet));
493	cPollNegRet = 0;
494	}
495	}
496
497	if (cChangedFDs >= 0)
498	{
499	slirp_select_poll(pThis->pNATState, &polls[1], nFDs);
500	if (polls[0].revents & (POLLRDNORM\|POLLPRI\|POLLRDBAND))
501	{
502	/* drain the pipe */
503	char ch[1];
504	size_t cbRead;
505	int counter = 0;
506	/*
507	* drvNATSend decoupled so we don't know how many times
508	* device's thread sends before we've entered multiplex,
509	* so to avoid false alarm drain pipe here to the very end
510	*
511	* @todo: Probably we should counter drvNATSend to count how
512	* deep pipe has been filed before drain.
513	*
514	* XXX:Make it reading exactly we need to drain the pipe.
515	*/
516	RTFileRead(pThis->PipeRead, &ch, 1, &cbRead);
517	}
518	}
519	/* process _all_ outstanding requests but don't wait */
520	RTReqProcess(pThis->pSlirpReqQueue, 0);
521	RTMemFree(polls);
522	#else /* RT_OS_WINDOWS */
523	slirp_select_fill(pThis->pNATState, &nFDs);
524	ms = slirp_get_timeout_ms(pThis->pNATState);
525	struct timeval tv = { 0, ms*1000 };
526	event = WSAWaitForMultipleEvents(nFDs, phEvents, FALSE, ms ? ms : WSA_INFINITE, FALSE);
527	if ( (event < WSA_WAIT_EVENT_0 \|\| event > WSA_WAIT_EVENT_0 + nFDs - 1)
528	&& event != WSA_WAIT_TIMEOUT)
529	{
530	int error = WSAGetLastError();
531	LogRel(("NAT: WSAWaitForMultipleEvents returned %d (error %d)\n", event, error));
532	RTAssertReleasePanic();
533	}
534
535	if (event == WSA_WAIT_TIMEOUT)
536	{
537	/* only check for slow/fast timers */
538	slirp_select_poll(pThis->pNATState, /* fTimeout=/true, /fIcmp=*/false);
539	continue;
540	}
541	/* poll the sockets in any case */
542	Log2(("%s: poll\n", __FUNCTION__));
543	slirp_select_poll(pThis->pNATState, /* fTimeout=/false, / fIcmp=*/(event == WSA_WAIT_EVENT_0));
544	/* process _all_ outstanding requests but don't wait */
545	RTReqProcess(pThis->pSlirpReqQueue, 0);
546	# ifdef VBOX_NAT_DELAY_HACK
547	if (cBreak++ > 128)
548	{
549	cBreak = 0;
550	RTThreadSleep(2);
551	}
552	# endif
553	#endif /* RT_OS_WINDOWS */
554	}
555
556	return VINF_SUCCESS;
557	}
558
559
560	/**
561	* Unblock the send thread so it can respond to a state change.
562	*
563	* @returns VBox status code.
564	* @param pDevIns The pcnet device instance.
565	* @param pThread The send thread.
566	*/
567	static DECLCALLBACK(int) drvNATAsyncIoWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
568	{
569	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
570
571	drvNATNotifyNATThread(pThis);
572	return VINF_SUCCESS;
573	}
574
575	#ifdef VBOX_WITH_SLIRP_MT
576
577	static DECLCALLBACK(int) drvNATAsyncIoGuest(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
578	{
579	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
580
581	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
582	return VINF_SUCCESS;
583
584	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
585	slirp_process_queue(pThis->pNATState);
586
587	return VINF_SUCCESS;
588	}
589
590
591	static DECLCALLBACK(int) drvNATAsyncIoGuestWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
592	{
593	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
594
595	return VINF_SUCCESS;
596	}
597
598	#endif /* VBOX_WITH_SLIRP_MT */
599
600
601	/**
602	* Function called by slirp to check if it's possible to feed incoming data to the network port.
603	* @returns 1 if possible.
604	* @returns 0 if not possible.
605	*/
606	int slirp_can_output(void *pvUser)
607	{
608	return 1;
609	}
610
611	/**
612	* Function called by slirp to feed incoming data to the network port.
613	*/
614	void slirp_output(void pvUser, void pvArg, const uint8_t *pu8Buf, int cb)
615	{
616	PDRVNAT pThis = (PDRVNAT)pvUser;
617	Assert(pThis);
618
619	LogFlow(("slirp_output BEGIN %x %d\n", pu8Buf, cb));
620	Log2(("slirp_output: pu8Buf=%p cb=%#x (pThis=%p)\n%.*Rhxd\n", pu8Buf, cb, pThis, cb, pu8Buf));
621
622	#ifndef SLIRP_SPLIT_CAN_OUTPUT
623	PDRVNATQUEUITEM pItem = (PDRVNATQUEUITEM)PDMQueueAlloc(pThis->pRecvQueue);
624	if (pItem)
625	{
626	pItem->pu8Buf = pu8Buf;
627	pItem->cb = cb;
628	pItem->mbuf = pvArg;
629	Log2(("pItem:%p %.Rhxd\n", pItem, pItem->pu8Buf));
630	PDMQueueInsert(pThis->pRecvQueue, &pItem->Core);
631	STAM_COUNTER_INC(&pThis->StatQueuePktSent);
632	return;
633	}
634	static unsigned s_cDroppedPackets;
635	if (s_cDroppedPackets < 64)
636	s_cDroppedPackets++;
637	else
638	{
639	LogRel(("NAT: %d messages suppressed about dropping packet (couldn't allocate queue item)\n", s_cDroppedPackets));
640	s_cDroppedPackets = 0;
641	}
642	STAM_COUNTER_INC(&pThis->StatQueuePktDropped);
643	RTMemFree((void *)pu8Buf);
644	#else
645	PRTREQ pReq = NULL;
646
647	/* don't queue new requests when the NAT thread is about to stop */
648	if (pThis->pSlirpThread->enmState != PDMTHREADSTATE_RUNNING)
649	return;
650
651	int rc = RTReqAlloc(pThis->pRecvReqQueue, &pReq, RTREQTYPE_INTERNAL);
652	AssertReleaseRC(rc);
653	pReq->u.Internal.pfn = (PFNRT)drvNATRecvWorker;
654	pReq->u.Internal.cArgs = 3;
655	pReq->u.Internal.aArgs[0] = (uintptr_t)pThis;
656	pReq->u.Internal.aArgs[1] = (uintptr_t)pu8Buf;
657	pReq->u.Internal.aArgs[2] = (uintptr_t)cb;
658	pReq->fFlags = RTREQFLAGS_VOID\|RTREQFLAGS_NO_WAIT;
659	rc = RTReqQueue(pReq, 0);
660	AssertReleaseRC(rc);
661	drvNATRecvWakeup(pThis->pDrvIns, pThis->pRecvThread);
662	STAM_COUNTER_INC(&pThis->StatQueuePktSent);
663	#endif
664	}
665
666
667	#ifndef SLIRP_SPLIT_CAN_OUTPUT
668	/**
669	* Queue callback for processing a queued item.
670	*
671	* @returns Success indicator.
672	* If false the item will not be removed and the flushing will stop.
673	* @param pDrvIns The driver instance.
674	* @param pItemCore Pointer to the queue item to process.
675	*/
676	static DECLCALLBACK(bool) drvNATQueueConsumer(PPDMDRVINS pDrvIns, PPDMQUEUEITEMCORE pItemCore)
677	{
678	int rc;
679	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
680	PDRVNATQUEUITEM pItem = (PDRVNATQUEUITEM)pItemCore;
681	PRTREQ pReq = NULL;
682	Log(("drvNATQueueConsumer(pItem:%p, pu8Buf:%p, cb:%d)\n", pItem, pItem->pu8Buf, pItem->cb));
683	Log2(("drvNATQueueConsumer: pu8Buf:\n%.Rhxd\n", pItem->pu8Buf));
684	if (RT_FAILURE(pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, 0)))
685	{
686	STAM_COUNTER_INC(&pThis->StatConsumerFalse);
687	return false;
688	}
689	rc = pThis->pPort->pfnReceive(pThis->pPort, pItem->pu8Buf, pItem->cb);
690	RTMemFree((void *)pItem->pu8Buf);
691	return true;
692
693	AssertRelease(pItem->mbuf == NULL);
694	return RT_SUCCESS(rc);
695	}
696	#endif
697
698
699	/**
700	* Queries an interface to the driver.
701	*
702	* @returns Pointer to interface.
703	* @returns NULL if the interface was not supported by the driver.
704	* @param pInterface Pointer to this interface structure.
705	* @param enmInterface The requested interface identification.
706	* @thread Any thread.
707	*/
708	static DECLCALLBACK(void *) drvNATQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
709	{
710	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
711	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
712	switch (enmInterface)
713	{
714	case PDMINTERFACE_BASE:
715	return &pDrvIns->IBase;
716	case PDMINTERFACE_NETWORK_CONNECTOR:
717	return &pThis->INetworkConnector;
718	default:
719	return NULL;
720	}
721	}
722
723
724	/**
725	* Get the MAC address into the slirp stack.
726	*
727	* Called by drvNATLoadDone and drvNATPowerOn.
728	*/
729	static void drvNATSetMac(PDRVNAT pThis)
730	{
731	if (pThis->pConfig)
732	{
733	RTMAC Mac;
734	pThis->pConfig->pfnGetMac(pThis->pConfig, &Mac);
735	slirp_set_ethaddr(pThis->pNATState, Mac.au8);
736	}
737	}
738
739
740	/**
741	* After loading we have to pass the MAC address of the ethernet device to the slirp stack.
742	* Otherwise the guest is not reachable until it performs a DHCP request or an ARP request
743	* (usually done during guest boot).
744	*/
745	static DECLCALLBACK(int) drvNATLoadDone(PPDMDRVINS pDrvIns, PSSMHANDLE pSSMHandle)
746	{
747	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
748	drvNATSetMac(pThis);
749	return VINF_SUCCESS;
750	}
751
752
753	/**
754	* Some guests might not use DHCP to retrieve an IP but use a static IP.
755	*/
756	static DECLCALLBACK(void) drvNATPowerOn(PPDMDRVINS pDrvIns)
757	{
758	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
759	drvNATSetMac(pThis);
760	}
761
762
763	/**
764	* Sets up the redirectors.
765	*
766	* @returns VBox status code.
767	* @param pCfgHandle The drivers configuration handle.
768	*/
769	static int drvNATConstructRedir(unsigned iInstance, PDRVNAT pThis, PCFGMNODE pCfgHandle, RTIPV4ADDR Network)
770	{
771	RTMAC Mac;
772	memset(&Mac, 0, sizeof(RTMAC)); /can't get MAC here /
773	/*
774	* Enumerate redirections.
775	*/
776	for (PCFGMNODE pNode = CFGMR3GetFirstChild(pCfgHandle); pNode; pNode = CFGMR3GetNextChild(pNode))
777	{
778	/*
779	* Validate the port forwarding config.
780	*/
781	if (!CFGMR3AreValuesValid(pNode, "Protocol\0UDP\0HostPort\0GuestPort\0GuestIP\0BindIP\0"))
782	return PDMDRV_SET_ERROR(pThis->pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, N_("Unknown configuration in port forwarding"));
783
784	/* protocol type */
785	bool fUDP;
786	char szProtocol[32];
787	int rc;
788	GET_STRING(rc, pThis, pNode, "Protocol", szProtocol[0], sizeof(szProtocol));
789	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
790	{
791	fUDP = false;
792	GET_BOOL(rc, pThis, pNode, "UDP", fUDP);
793	}
794	else if (RT_SUCCESS(rc))
795	{
796	if (!RTStrICmp(szProtocol, "TCP"))
797	fUDP = false;
798	else if (!RTStrICmp(szProtocol, "UDP"))
799	fUDP = true;
800	else
801	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_INVALID_PARAMETER, RT_SRC_POS,
802	N_("NAT#%d: Invalid configuration value for \"Protocol\": \"%s\""),
803	iInstance, szProtocol);
804	}
805	/* host port */
806	int32_t iHostPort;
807	GET_S32_STRICT(rc, pThis, pNode, "HostPort", iHostPort);
808
809	/* guest port */
810	int32_t iGuestPort;
811	GET_S32_STRICT(rc, pThis, pNode, "GuestPort", iGuestPort);
812
813	/* guest address */
814	struct in_addr GuestIP;
815	/* @todo (vvl) use CTL_* */
816	GETIP_DEF(rc, pThis, pNode, GuestIP, htonl(Network \| CTL_GUEST));
817
818	/*
819	* Call slirp about it.
820	*/
821	struct in_addr BindIP;
822	GETIP_DEF(rc, pThis, pNode, BindIP, INADDR_ANY);
823	if (slirp_redir(pThis->pNATState, fUDP, BindIP, iHostPort, GuestIP, iGuestPort, Mac.au8) < 0)
824	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_NAT_REDIR_SETUP, RT_SRC_POS,
825	N_("NAT#%d: configuration error: failed to set up "
826	"redirection of %d to %d. Probably a conflict with "
827	"existing services or other rules"), iInstance, iHostPort,
828	iGuestPort);
829	} /* for each redir rule */
830
831	return VINF_SUCCESS;
832	}
833
834
835	/**
836	* Destruct a driver instance.
837	*
838	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
839	* resources can be freed correctly.
840	*
841	* @param pDrvIns The driver instance data.
842	*/
843	static DECLCALLBACK(void) drvNATDestruct(PPDMDRVINS pDrvIns)
844	{
845	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
846
847	LogFlow(("drvNATDestruct:\n"));
848
849	slirp_term(pThis->pNATState);
850	slirp_deregister_statistics(pThis->pNATState, pDrvIns);
851	pThis->pNATState = NULL;
852	#ifdef VBOX_WITH_STATISTICS
853	# define DRV_PROFILE_COUNTER(name, dsc) DEREGISTER_COUNTER(name, pThis)
854	# define DRV_COUNTING_COUNTER(name, dsc) DEREGISTER_COUNTER(name, pThis)
855	# include "counters.h"
856	#endif
857	}
858
859
860	/**
861	* Construct a NAT network transport driver instance.
862	*
863	* @copydoc FNPDMDRVCONSTRUCT
864	*/
865	static DECLCALLBACK(int) drvNATConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle, uint32_t fFlags)
866	{
867	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
868
869	LogFlow(("drvNATConstruct:\n"));
870
871	/*
872	* Validate the config.
873	*/
874	if (!CFGMR3AreValuesValid(pCfgHandle,
875	"PassDomain\0TFTPPrefix\0BootFile\0Network"
876	"\0NextServer\0DNSProxy\0BindIP\0"
877	"SocketRcvBuf\0SocketSndBuf\0TcpRcvSpace\0TcpSndSpace\0"))
878	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES,
879	N_("Unknown NAT configuration option, only supports PassDomain,"
880	" TFTPPrefix, BootFile and Network"));
881
882	/*
883	* Init the static parts.
884	*/
885	pThis->pDrvIns = pDrvIns;
886	pThis->pNATState = NULL;
887	pThis->pszTFTPPrefix = NULL;
888	pThis->pszBootFile = NULL;
889	pThis->pszNextServer = NULL;
890	/* IBase */
891	pDrvIns->IBase.pfnQueryInterface = drvNATQueryInterface;
892	/* INetwork */
893	pThis->INetworkConnector.pfnSend = drvNATSend;
894	pThis->INetworkConnector.pfnSetPromiscuousMode = drvNATSetPromiscuousMode;
895	pThis->INetworkConnector.pfnNotifyLinkChanged = drvNATNotifyLinkChanged;
896
897	/*
898	* Get the configuration settings.
899	*/
900	int rc;
901	bool fPassDomain = true;
902	GET_BOOL(rc, pThis, pCfgHandle, "PassDomain", fPassDomain);
903
904	GET_STRING_ALLOC(rc, pThis, pCfgHandle, "TFTPPrefix", pThis->pszTFTPPrefix);
905	GET_STRING_ALLOC(rc, pThis, pCfgHandle, "BootFile", pThis->pszBootFile);
906	GET_STRING_ALLOC(rc, pThis, pCfgHandle, "NextServer", pThis->pszNextServer);
907
908	int fDNSProxy = 0;
909	GET_S32(rc, pThis, pCfgHandle, "DNSProxy", fDNSProxy);
910
911	/*
912	* Query the network port interface.
913	*/
914	pThis->pPort =
915	(PPDMINETWORKPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase,
916	PDMINTERFACE_NETWORK_PORT);
917	if (!pThis->pPort)
918	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
919	N_("Configuration error: the above device/driver didn't "
920	"export the network port interface"));
921	pThis->pConfig =
922	(PPDMINETWORKCONFIG)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase,
923	PDMINTERFACE_NETWORK_CONFIG);
924	if (!pThis->pConfig)
925	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
926	N_("Configuration error: the above device/driver didn't "
927	"export the network config interface"));
928
929	/* Generate a network address for this network card. */
930	char szNetwork[32]; /* xxx.xxx.xxx.xxx/yy */
931	GET_STRING(rc, pThis, pCfgHandle, "Network", szNetwork[0], sizeof(szNetwork));
932	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
933	RTStrPrintf(szNetwork, sizeof(szNetwork), "10.0.%d.0/24", pDrvIns->iInstance + 2);
934
935	RTIPV4ADDR Network;
936	RTIPV4ADDR Netmask;
937	rc = RTCidrStrToIPv4(szNetwork, &Network, &Netmask);
938	if (RT_FAILURE(rc))
939	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: Configuration error: "
940	"network '%s' describes not a valid IPv4 network"),
941	pDrvIns->iInstance, szNetwork);
942
943	char szNetAddr[16];
944	RTStrPrintf(szNetAddr, sizeof(szNetAddr), "%d.%d.%d.%d",
945	(Network & 0xFF000000) >> 24, (Network & 0xFF0000) >> 16,
946	(Network & 0xFF00) >> 8, Network & 0xFF);
947
948	/*
949	* Initialize slirp.
950	*/
951	rc = slirp_init(&pThis->pNATState, &szNetAddr[0], Netmask, fPassDomain, pThis);
952	if (RT_SUCCESS(rc))
953	{
954	slirp_set_dhcp_TFTP_prefix(pThis->pNATState, pThis->pszTFTPPrefix);
955	slirp_set_dhcp_TFTP_bootfile(pThis->pNATState, pThis->pszBootFile);
956	slirp_set_dhcp_next_server(pThis->pNATState, pThis->pszNextServer);
957	slirp_set_dhcp_dns_proxy(pThis->pNATState, !!fDNSProxy);
958	char *pszBindIP = NULL;
959	GET_STRING_ALLOC(rc, pThis, pCfgHandle, "BindIP", pszBindIP);
960	rc = slirp_set_binding_address(pThis->pNATState, pszBindIP);
961	if (rc != 0)
962	LogRel(("NAT: value of BindIP has been ignored\n"));
963
964	if(pszBindIP != NULL)
965	MMR3HeapFree(pszBindIP);
966	#define SLIRP_SET_TUNING_VALUE(name, setter) \
967	do \
968	{ \
969	int len = 0; \
970	rc = CFGMR3QueryS32(pCfgHandle, name, &len); \
971	if (RT_SUCCESS(rc)) \
972	setter(pThis->pNATState, len); \
973	} while(0)
974
975	SLIRP_SET_TUNING_VALUE("SocketRcvBuf", slirp_set_rcvbuf);
976	SLIRP_SET_TUNING_VALUE("SocketSndBuf", slirp_set_sndbuf);
977	SLIRP_SET_TUNING_VALUE("TcpRcvSpace", slirp_set_tcp_rcvspace);
978	SLIRP_SET_TUNING_VALUE("TcpSndSpace", slirp_set_tcp_sndspace);
979
980	slirp_register_statistics(pThis->pNATState, pDrvIns);
981	#ifdef VBOX_WITH_STATISTICS
982	# define DRV_PROFILE_COUNTER(name, dsc) REGISTER_COUNTER(name, pThis, STAMTYPE_PROFILE, STAMUNIT_TICKS_PER_CALL, dsc)
983	# define DRV_COUNTING_COUNTER(name, dsc) REGISTER_COUNTER(name, pThis, STAMTYPE_COUNTER, STAMUNIT_COUNT, dsc)
984	# include "counters.h"
985	#endif
986
987	int rc2 = drvNATConstructRedir(pDrvIns->iInstance, pThis, pCfgHandle, Network);
988	if (RT_SUCCESS(rc2))
989	{
990	/*
991	* Register a load done notification to get the MAC address into the slirp
992	* engine after we loaded a guest state.
993	*/
994	rc2 = PDMDrvHlpSSMRegister(pDrvIns, pDrvIns->pDrvReg->szDriverName,
995	pDrvIns->iInstance, 0, 0,
996	NULL, NULL, NULL, NULL, NULL, drvNATLoadDone);
997	AssertRC(rc2);
998	rc = RTReqCreateQueue(&pThis->pSlirpReqQueue);
999	if (RT_FAILURE(rc))
1000	{
1001	LogRel(("NAT: Can't create request queue\n"));
1002	return rc;
1003	}
1004
1005
1006	#ifndef SLIRP_SPLIT_CAN_OUTPUT
1007	rc = PDMDrvHlpPDMQueueCreate(pDrvIns, sizeof(DRVNATQUEUITEM), QUEUE_SIZE, 0,
1008	drvNATQueueConsumer, "NAT", &pThis->pRecvQueue);
1009	if (RT_FAILURE(rc))
1010	{
1011	LogRel(("NAT: Can't create send queue\n"));
1012	return rc;
1013	}
1014	#else
1015	rc = RTReqCreateQueue(&pThis->pRecvReqQueue);
1016	if (RT_FAILURE(rc))
1017	{
1018	LogRel(("NAT: Can't create request queue\n"));
1019	return rc;
1020	}
1021	rc = PDMDrvHlpPDMThreadCreate(pDrvIns, &pThis->pRecvThread, pThis, drvNATRecv,
1022	drvNATRecvWakeup, 128 * _1K, RTTHREADTYPE_IO, "NATRX");
1023	AssertReleaseRC(rc);
1024	rc = RTSemEventCreate(&pThis->EventRecv);
1025	#endif
1026
1027	#ifndef RT_OS_WINDOWS
1028	/*
1029	* Create the control pipe.
1030	*/
1031	int fds[2];
1032	if (pipe(&fds[0]) != 0) /** @todo RTPipeCreate() or something... */
1033	{
1034	int rc = RTErrConvertFromErrno(errno);
1035	AssertRC(rc);
1036	return rc;
1037	}
1038	pThis->PipeRead = fds[0];
1039	pThis->PipeWrite = fds[1];
1040	#else
1041	pThis->hWakeupEvent = CreateEvent(NULL, FALSE, FALSE, NULL); /* auto-reset event */
1042	slirp_register_external_event(pThis->pNATState, pThis->hWakeupEvent,
1043	VBOX_WAKEUP_EVENT_INDEX);
1044	#endif
1045
1046	rc = PDMDrvHlpPDMThreadCreate(pDrvIns, &pThis->pSlirpThread, pThis, drvNATAsyncIoThread,
1047	drvNATAsyncIoWakeup, 128 * _1K, RTTHREADTYPE_IO, "NAT");
1048	AssertReleaseRC(rc);
1049
1050	#ifdef VBOX_WITH_SLIRP_MT
1051	rc = PDMDrvHlpPDMThreadCreate(pDrvIns, &pThis->pGuestThread, pThis, drvNATAsyncIoGuest,
1052	drvNATAsyncIoGuestWakeup, 128 * _1K, RTTHREADTYPE_IO, "NATGUEST");
1053	AssertReleaseRC(rc);
1054	#endif
1055
1056	pThis->enmLinkState = PDMNETWORKLINKSTATE_UP;
1057
1058	/* might return VINF_NAT_DNS */
1059	return rc;
1060	}
1061	/* failure path */
1062	rc = rc2;
1063	slirp_term(pThis->pNATState);
1064	pThis->pNATState = NULL;
1065	}
1066	else
1067	{
1068	PDMDRV_SET_ERROR(pDrvIns, rc, N_("Unknown error during NAT networking setup: "));
1069	AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
1070	}
1071
1072	return rc;
1073	}
1074
1075
1076	/**
1077	* NAT network transport driver registration record.
1078	*/
1079	const PDMDRVREG g_DrvNAT =
1080	{
1081	/* u32Version */
1082	PDM_DRVREG_VERSION,
1083	/* szDriverName */
1084	"NAT",
1085	/* pszDescription */
1086	"NAT Network Transport Driver",
1087	/* fFlags */
1088	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1089	/* fClass. */
1090	PDM_DRVREG_CLASS_NETWORK,
1091	/* cMaxInstances */
1092	16,
1093	/* cbInstance */
1094	sizeof(DRVNAT),
1095	/* pfnConstruct */
1096	drvNATConstruct,
1097	/* pfnDestruct */
1098	drvNATDestruct,
1099	/* pfnIOCtl */
1100	NULL,
1101	/* pfnPowerOn */
1102	drvNATPowerOn,
1103	/* pfnReset */
1104	NULL,
1105	/* pfnSuspend */
1106	NULL,
1107	/* pfnResume */
1108	NULL,
1109	/* pfnAttach */
1110	NULL,
1111	/* pfnDetach */
1112	NULL,
1113	/* pfnPowerOff */
1114	NULL,
1115	/* pfnSoftReset */
1116	NULL,
1117	/* u32EndVersion */
1118	PDM_DRVREG_VERSION
1119	};
1120

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source: vbox/trunk/src/VBox/Devices/Network/DrvNAT.cpp@ 22458

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