DrvNAT.cpp@ 11444

Last change on this file since 11444 was 11284, checked in by vboxsync, 16 years ago
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Line
1	/** @file
2	*
3	* VBox network devices:
4	* NAT network transport driver
5	*/
6
7	/*
8	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*
18	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
19	* Clara, CA 95054 USA or visit http://www.sun.com if you need
20	* additional information or have any questions.
21	*/
22
23
24	/*******************************************************************************
25	* Header Files *
26	*******************************************************************************/
27	#define LOG_GROUP LOG_GROUP_DRV_NAT
28	#define __STDC_LIMIT_MACROS
29	#define __STDC_CONSTANT_MACROS
30	#ifndef VBOX_NAT_SOURCES
31	#include "Network/slirp/libslirp.h"
32	#else
33	#include <sys/types.h>
34	#include <sys/socket.h>
35
36	#include <netinet/in.h>
37
38	#include <errno.h>
39
40	#include <unistd.h>
41
42	#include <fcntl.h>
43
44	#include <string.h>
45
46	#include "Network/nat/nat.h"
47	#endif
48	#include <VBox/pdmdrv.h>
49	#include <iprt/assert.h>
50	#include <iprt/file.h>
51	#include <iprt/string.h>
52	#include <iprt/critsect.h>
53	#include <iprt/cidr.h>
54
55	#include "Builtins.h"
56
57
58	/*******************************************************************************
59	* Structures and Typedefs *
60	*******************************************************************************/
61	/**
62	* NAT network transport driver instance data.
63	*/
64	typedef struct DRVNAT
65	{
66	/** The network interface. */
67	PDMINETWORKCONNECTOR INetworkConnector;
68	/** The port we're attached to. */
69	PPDMINETWORKPORT pPort;
70	/** The network config of the port we're attached to. */
71	PPDMINETWORKCONFIG pConfig;
72	/** Pointer to the driver instance. */
73	PPDMDRVINS pDrvIns;
74	/** Slirp critical section. */
75	RTCRITSECT CritSect;
76	/** Link state */
77	PDMNETWORKLINKSTATE enmLinkState;
78	/** NAT state for this instance. */
79	#ifndef VBOX_NAT_SOURCES
80	PNATState pNATState;
81	#endif
82	/** TFTP directory prefix. */
83	char *pszTFTPPrefix;
84	/** Boot file name to provide in the DHCP server response. */
85	char *pszBootFile;
86	} DRVNAT, *PDRVNAT;
87
88	/** Converts a pointer to NAT::INetworkConnector to a PRDVNAT. */
89	#define PDMINETWORKCONNECTOR_2_DRVNAT(pInterface) ( (PDRVNAT)((uintptr_t)pInterface - RT_OFFSETOF(DRVNAT, INetworkConnector)) )
90
91
92	/*******************************************************************************
93	* Global Variables *
94	*******************************************************************************/
95	#if 0
96	/** If set the thread should terminate. */
97	static bool g_fThreadTerm = false;
98	/** The thread id of the select thread (drvNATSelectThread()). */
99	static RTTHREAD g_ThreadSelect;
100	#endif
101
102
103	/*******************************************************************************
104	* Internal Functions *
105	*******************************************************************************/
106
107
108	#ifdef VBOX_NAT_SOURCES
109	/*
110	* Sends data to guest called from NAT glue code
111	*/
112	static DECLCALLBACK(void) drvNATOutput(const void * data, const uint8_t *msg, size_t size)
113	{
114	PDRVNAT pThis = (PDRVNAT)(void *)data;
115	LogFlow(("output: pvBuf=%p cb=%#x\n", msg, size));
116	int rc = pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, 0);
117	if (RT_SUCCESS(rc))
118	pThis->pPort->pfnReceive(pThis->pPort, msg, size);
119	LogFlow(("output: exit\n"));
120	}
121
122	#endif
123
124	/**
125	* Send data to the network.
126	*
127	* @returns VBox status code.
128	* @param pInterface Pointer to the interface structure containing the called function pointer.
129	* @param pvBuf Data to send.
130	* @param cb Number of bytes to send.
131	* @thread EMT
132	*/
133	static DECLCALLBACK(int) drvNATSend(PPDMINETWORKCONNECTOR pInterface, const void *pvBuf, size_t cb)
134	{
135	PDRVNAT pThis = PDMINETWORKCONNECTOR_2_DRVNAT(pInterface);
136
137	LogFlow(("drvNATSend: pvBuf=%p cb=%#x\n", pvBuf, cb));
138	Log2(("drvNATSend: pvBuf=%p cb=%#x\n"
139	"%.*Vhxd\n",
140	pvBuf, cb, cb, pvBuf));
141
142	int rc = RTCritSectEnter(&pThis->CritSect);
143	AssertReleaseRC(rc);
144
145	Assert(pThis->enmLinkState == PDMNETWORKLINKSTATE_UP);
146	if (pThis->enmLinkState == PDMNETWORKLINKSTATE_UP) {
147	#ifndef VBOX_NAT_SOURCES
148	slirp_input(pThis->pNATState, (uint8_t *)pvBuf, cb);
149	#else
150	ether_chk(pThis, pvBuf, cb);
151	#endif
152	}
153	RTCritSectLeave(&pThis->CritSect);
154	LogFlow(("drvNATSend: end\n"));
155	return VINF_SUCCESS;
156	}
157
158
159	/**
160	* Set promiscuous mode.
161	*
162	* This is called when the promiscuous mode is set. This means that there doesn't have
163	* to be a mode change when it's called.
164	*
165	* @param pInterface Pointer to the interface structure containing the called function pointer.
166	* @param fPromiscuous Set if the adaptor is now in promiscuous mode. Clear if it is not.
167	* @thread EMT
168	*/
169	static DECLCALLBACK(void) drvNATSetPromiscuousMode(PPDMINETWORKCONNECTOR pInterface, bool fPromiscuous)
170	{
171	LogFlow(("drvNATSetPromiscuousMode: fPromiscuous=%d\n", fPromiscuous));
172	/* nothing to do */
173	}
174
175
176	/**
177	* Notification on link status changes.
178	*
179	* @param pInterface Pointer to the interface structure containing the called function pointer.
180	* @param enmLinkState The new link state.
181	* @thread EMT
182	*/
183	static DECLCALLBACK(void) drvNATNotifyLinkChanged(PPDMINETWORKCONNECTOR pInterface, PDMNETWORKLINKSTATE enmLinkState)
184	{
185	PDRVNAT pThis = PDMINETWORKCONNECTOR_2_DRVNAT(pInterface);
186
187	LogFlow(("drvNATNotifyLinkChanged: enmLinkState=%d\n", enmLinkState));
188
189	int rc = RTCritSectEnter(&pThis->CritSect);
190	AssertReleaseRC(rc);
191	pThis->enmLinkState = enmLinkState;
192
193	switch (enmLinkState)
194	{
195	case PDMNETWORKLINKSTATE_UP:
196	LogRel(("NAT: link up\n"));
197	#ifndef VBOX_NAT_SOURCES
198	slirp_link_up(pThis->pNATState);
199	#endif
200	break;
201
202	case PDMNETWORKLINKSTATE_DOWN:
203	case PDMNETWORKLINKSTATE_DOWN_RESUME:
204	LogRel(("NAT: link down\n"));
205	#ifndef VBOX_NAT_SOURCES
206	slirp_link_down(pThis->pNATState);
207	#endif
208	break;
209
210	default:
211	AssertMsgFailed(("drvNATNotifyLinkChanged: unexpected link state %d\n", enmLinkState));
212	}
213	RTCritSectLeave(&pThis->CritSect);
214	}
215
216
217	/**
218	* Poller callback.
219	*/
220	static DECLCALLBACK(void) drvNATPoller(PPDMDRVINS pDrvIns)
221	{
222	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
223	fd_set ReadFDs;
224	fd_set WriteFDs;
225	fd_set XcptFDs;
226	int cFDs = -1;
227	FD_ZERO(&ReadFDs);
228	FD_ZERO(&WriteFDs);
229	FD_ZERO(&XcptFDs);
230
231	int rc = RTCritSectEnter(&pThis->CritSect);
232	AssertReleaseRC(rc);
233
234	#ifndef VBOX_NAT_SOURCES
235	slirp_select_fill(pThis->pNATState, &cFDs, &ReadFDs, &WriteFDs, &XcptFDs);
236	#else
237	nat_select_fill(NULL, &cFDs, &ReadFDs, &WriteFDs, &XcptFDs);
238	#endif
239
240	struct timeval tv = {0, 0}; /* no wait */
241	int cReadFDs = select(cFDs + 1, &ReadFDs, &WriteFDs, &XcptFDs, &tv);
242	#ifndef VBOX_NAT_SOURCES
243	if (cReadFDs >= 0)
244	slirp_select_poll(pThis->pNATState, &ReadFDs, &WriteFDs, &XcptFDs);
245	#else
246	if (cReadFDs >= 0) {
247	nat_select_poll(pThis, &ReadFDs, &WriteFDs, &XcptFDs);
248	}
249	#endif
250
251	RTCritSectLeave(&pThis->CritSect);
252	}
253
254	#ifndef VBOX_NAT_SOURCES
255	/**
256	* Function called by slirp to check if it's possible to feed incoming data to the network port.
257	* @returns 1 if possible.
258	* @returns 0 if not possible.
259	*/
260	int slirp_can_output(void *pvUser)
261	{
262	PDRVNAT pThis = (PDRVNAT)pvUser;
263
264	Assert(pThis);
265
266	/** Happens during termination */
267	if (!RTCritSectIsOwner(&pThis->CritSect))
268	return 0;
269
270	int rc = pThis->pPort->pfnWaitReceiveAvail(pThis->pPort, 0);
271	return RT_SUCCESS(rc);
272	}
273
274
275	/**
276	* Function called by slirp to feed incoming data to the network port.
277	*/
278	void slirp_output(void pvUser, const uint8_t pu8Buf, int cb)
279	{
280	PDRVNAT pThis = (PDRVNAT)pvUser;
281
282	LogFlow(("slirp_output BEGIN %x %d\n", pu8Buf, cb));
283	Log2(("slirp_output: pu8Buf=%p cb=%#x (pThis=%p)\n"
284	"%.*Vhxd\n",
285	pu8Buf, cb, pThis,
286	cb, pu8Buf));
287
288	Assert(pThis);
289
290	/** Happens during termination */
291	if (!RTCritSectIsOwner(&pThis->CritSect))
292	return;
293
294	int rc = pThis->pPort->pfnReceive(pThis->pPort, pu8Buf, cb);
295	AssertRC(rc);
296	LogFlow(("slirp_output END %x %d\n", pu8Buf, cb));
297	}
298	#endif
299
300	/**
301	* Queries an interface to the driver.
302	*
303	* @returns Pointer to interface.
304	* @returns NULL if the interface was not supported by the driver.
305	* @param pInterface Pointer to this interface structure.
306	* @param enmInterface The requested interface identification.
307	* @thread Any thread.
308	*/
309	static DECLCALLBACK(void *) drvNATQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
310	{
311	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
312	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
313	switch (enmInterface)
314	{
315	case PDMINTERFACE_BASE:
316	return &pDrvIns->IBase;
317	case PDMINTERFACE_NETWORK_CONNECTOR:
318	return &pThis->INetworkConnector;
319	default:
320	return NULL;
321	}
322	}
323
324
325	/**
326	* Destruct a driver instance.
327	*
328	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
329	* resources can be freed correctly.
330	*
331	* @param pDrvIns The driver instance data.
332	*/
333	static DECLCALLBACK(void) drvNATDestruct(PPDMDRVINS pDrvIns)
334	{
335	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
336
337	LogFlow(("drvNATDestruct:\n"));
338
339	int rc = RTCritSectEnter(&pThis->CritSect);
340	AssertReleaseRC(rc);
341	#ifndef VBOX_NAT_SOURCES
342	slirp_term(pThis->pNATState);
343	pThis->pNATState = NULL;
344	#endif
345	RTCritSectLeave(&pThis->CritSect);
346
347	RTCritSectDelete(&pThis->CritSect);
348	}
349
350
351	/**
352	* Sets up the redirectors.
353	*
354	* @returns VBox status code.
355	* @param pCfgHandle The drivers configuration handle.
356	*/
357	static int drvNATConstructRedir(unsigned iInstance, PDRVNAT pThis, PCFGMNODE pCfgHandle, RTIPV4ADDR Network)
358	{
359	#ifndef VBOX_NAT_SOURCES
360	/*
361	* Enumerate redirections.
362	*/
363	for (PCFGMNODE pNode = CFGMR3GetFirstChild(pCfgHandle); pNode; pNode = CFGMR3GetNextChild(pNode))
364	{
365	/*
366	* Validate the port forwarding config.
367	*/
368	if (!CFGMR3AreValuesValid(pNode, "Protocol\0UDP\0HostPort\0GuestPort\0GuestIP\0"))
369	return PDMDRV_SET_ERROR(pThis->pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, N_("Unknown configuration in port forwarding"));
370
371	/* protocol type */
372	bool fUDP;
373	char szProtocol[32];
374	int rc = CFGMR3QueryString(pNode, "Protocol", &szProtocol[0], sizeof(szProtocol));
375	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
376	{
377	rc = CFGMR3QueryBool(pNode, "UDP", &fUDP);
378	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
379	fUDP = false;
380	else if (RT_FAILURE(rc))
381	return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"UDP\" boolean failed"), iInstance);
382	}
383	else if (RT_SUCCESS(rc))
384	{
385	if (!RTStrICmp(szProtocol, "TCP"))
386	fUDP = false;
387	else if (!RTStrICmp(szProtocol, "UDP"))
388	fUDP = true;
389	else
390	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_INVALID_PARAMETER, RT_SRC_POS, N_("NAT#%d: Invalid configuration value for \"Protocol\": \"%s\""), iInstance, szProtocol);
391	}
392	else
393	return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"Protocol\" string failed"), iInstance);
394
395	/* host port */
396	int32_t iHostPort;
397	rc = CFGMR3QueryS32(pNode, "HostPort", &iHostPort);
398	if (RT_FAILURE(rc))
399	return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"HostPort\" integer failed"), iInstance);
400
401	/* guest port */
402	int32_t iGuestPort;
403	rc = CFGMR3QueryS32(pNode, "GuestPort", &iGuestPort);
404	if (RT_FAILURE(rc))
405	return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"GuestPort\" integer failed"), iInstance);
406
407	/* guest address */
408	char szGuestIP[32];
409	rc = CFGMR3QueryString(pNode, "GuestIP", &szGuestIP[0], sizeof(szGuestIP));
410	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
411	RTStrPrintf(szGuestIP, sizeof(szGuestIP), "%d.%d.%d.%d",
412	(Network & 0xFF000000) >> 24, (Network & 0xFF0000) >> 16, (Network & 0xFF00) >> 8, (Network & 0xE0) \| 15);
413	else if (RT_FAILURE(rc))
414	return PDMDrvHlpVMSetError(pThis->pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"GuestIP\" string failed"), iInstance);
415	struct in_addr GuestIP;
416	if (!inet_aton(szGuestIP, &GuestIP))
417	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_NAT_REDIR_GUEST_IP, RT_SRC_POS, N_("NAT#%d: configuration error: invalid \"GuestIP\"=\"%s\", inet_aton failed"), iInstance, szGuestIP);
418
419	/*
420	* Call slirp about it.
421	*/
422	Log(("drvNATConstruct: Redir %d -> %s:%d\n", iHostPort, szGuestIP, iGuestPort));
423	if (slirp_redir(pThis->pNATState, fUDP, iHostPort, GuestIP, iGuestPort) < 0)
424	return PDMDrvHlpVMSetError(pThis->pDrvIns, VERR_NAT_REDIR_SETUP, RT_SRC_POS, N_("NAT#%d: configuration error: failed to set up redirection of %d to %s:%d. Probably a conflict with existing services or other rules"), iInstance, iHostPort, szGuestIP, iGuestPort);
425	} /* for each redir rule */
426	#endif
427
428	return VINF_SUCCESS;
429	}
430
431	/**
432	* Get the MAC address into the slirp stack.
433	*/
434	static void drvNATSetMac(PDRVNAT pThis)
435	{
436	#ifndef VBOX_NAT_SOURCES
437	if (pThis->pConfig)
438	{
439	RTMAC Mac;
440	pThis->pConfig->pfnGetMac(pThis->pConfig, &Mac);
441	slirp_set_ethaddr(pThis->pNATState, Mac.au8);
442	}
443	#endif
444	}
445
446
447	/**
448	* After loading we have to pass the MAC address of the ethernet device to the slirp stack.
449	* Otherwise the guest is not reachable until it performs a DHCP request or an ARP request
450	* (usually done during guest boot).
451	*/
452	static DECLCALLBACK(int) drvNATLoadDone(PPDMDRVINS pDrvIns, PSSMHANDLE pSSMHandle)
453	{
454	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
455	drvNATSetMac(pThis);
456	return VINF_SUCCESS;
457	}
458
459
460	/**
461	* Some guests might not use DHCP to retrieve an IP but use a static IP.
462	*/
463	static DECLCALLBACK(void) drvNATPowerOn(PPDMDRVINS pDrvIns)
464	{
465	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
466	drvNATSetMac(pThis);
467	}
468
469
470	/**
471	* Construct a NAT network transport driver instance.
472	*
473	* @returns VBox status.
474	* @param pDrvIns The driver instance data.
475	* If the registration structure is needed, pDrvIns->pDrvReg points to it.
476	* @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
477	* of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
478	* iInstance it's expected to be used a bit in this function.
479	*/
480	static DECLCALLBACK(int) drvNATConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
481	{
482	PDRVNAT pThis = PDMINS_2_DATA(pDrvIns, PDRVNAT);
483	char szNetAddr[16];
484	char szNetwork[32]; /* xxx.xxx.xxx.xxx/yy */
485	LogFlow(("drvNATConstruct:\n"));
486
487	/*
488	* Validate the config.
489	*/
490	if (!CFGMR3AreValuesValid(pCfgHandle, "PassDomain\0TFTPPrefix\0BootFile\0Network\0"))
491	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES, N_("Unknown NAT configuration option, only supports PassDomain, TFTPPrefix, BootFile and Network"));
492
493	/*
494	* Init the static parts.
495	*/
496	pThis->pDrvIns = pDrvIns;
497	#ifndef VBOX_NAT_SOURCES
498	pThis->pNATState = NULL;
499	#endif
500	pThis->pszTFTPPrefix = NULL;
501	pThis->pszBootFile = NULL;
502	/* IBase */
503	pDrvIns->IBase.pfnQueryInterface = drvNATQueryInterface;
504	/* INetwork */
505	pThis->INetworkConnector.pfnSend = drvNATSend;
506	pThis->INetworkConnector.pfnSetPromiscuousMode = drvNATSetPromiscuousMode;
507	pThis->INetworkConnector.pfnNotifyLinkChanged = drvNATNotifyLinkChanged;
508
509	/*
510	* Get the configuration settings.
511	*/
512	bool fPassDomain = true;
513	int rc = CFGMR3QueryBool(pCfgHandle, "PassDomain", &fPassDomain);
514	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
515	fPassDomain = true;
516	else if (RT_FAILURE(rc))
517	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"PassDomain\" boolean failed"), pDrvIns->iInstance);
518
519	rc = CFGMR3QueryStringAlloc(pCfgHandle, "TFTPPrefix", &pThis->pszTFTPPrefix);
520	if (RT_FAILURE(rc) && rc != VERR_CFGM_VALUE_NOT_FOUND)
521	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"TFTPPrefix\" string failed"), pDrvIns->iInstance);
522	rc = CFGMR3QueryStringAlloc(pCfgHandle, "BootFile", &pThis->pszBootFile);
523	if (RT_FAILURE(rc) && rc != VERR_CFGM_VALUE_NOT_FOUND)
524	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"BootFile\" string failed"), pDrvIns->iInstance);
525
526	/*
527	* Query the network port interface.
528	*/
529	pThis->pPort = (PPDMINETWORKPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_NETWORK_PORT);
530	if (!pThis->pPort)
531	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
532	N_("Configuration error: the above device/driver didn't export the network port interface"));
533	pThis->pConfig = (PPDMINETWORKCONFIG)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMINTERFACE_NETWORK_CONFIG);
534	if (!pThis->pConfig)
535	return PDMDRV_SET_ERROR(pDrvIns, VERR_PDM_MISSING_INTERFACE_ABOVE,
536	N_("Configuration error: the above device/driver didn't export the network config interface"));
537
538	/* Generate a network address for this network card. */
539	rc = CFGMR3QueryString(pCfgHandle, "Network", szNetwork, sizeof(szNetwork));
540	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
541	RTStrPrintf(szNetwork, sizeof(szNetwork), "10.0.%d.0/24", pDrvIns->iInstance + 2);
542	else if (RT_FAILURE(rc))
543	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: configuration query for \"Network\" string failed"), pDrvIns->iInstance);
544
545	RTIPV4ADDR Network;
546	RTIPV4ADDR Netmask;
547	rc = RTCidrStrToIPv4(szNetwork, &Network, &Netmask);
548	if (RT_FAILURE(rc))
549	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NAT#%d: Configuration error: network '%s' describes not a valid IPv4 network"), pDrvIns->iInstance, szNetwork);
550
551	RTStrPrintf(szNetAddr, sizeof(szNetAddr), "%d.%d.%d.%d",
552	(Network & 0xFF000000) >> 24, (Network & 0xFF0000) >> 16, (Network & 0xFF00) >> 8, Network & 0xFF);
553
554	/*
555	* The slirp lock..
556	*/
557	rc = RTCritSectInit(&pThis->CritSect);
558	if (RT_FAILURE(rc))
559	return rc;
560	#if 0
561	rc = RTSemEventCreate(&g_EventSem);
562	if (RT_SUCCESS(rc))
563	{
564	/*
565	* Start the select thread. (it'll block on the sem)
566	*/
567	g_fThreadTerm = false;
568	rc = RTThreadCreate(&g_ThreadSelect, drvNATSelectThread, 0, NULL, "NATSEL");
569	if (RT_SUCCESS(rc))
570	{
571	#endif
572	#ifndef VBOX_NAT_SOURCES
573	/*
574	* Initialize slirp.
575	*/
576	rc = slirp_init(&pThis->pNATState, &szNetAddr[0], Netmask, fPassDomain, pThis->pszTFTPPrefix, pThis->pszBootFile, pThis);
577	if (RT_SUCCESS(rc))
578	{
579	int rc2 = drvNATConstructRedir(pDrvIns->iInstance, pThis, pCfgHandle, Network);
580	if (RT_SUCCESS(rc2))
581	{
582	/*
583	* Register a load done notification to get the MAC address into the slirp
584	* engine after we loaded a guest state.
585	*/
586	rc2 = PDMDrvHlpSSMRegister(pDrvIns, pDrvIns->pDrvReg->szDriverName,
587	pDrvIns->iInstance, 0, 0,
588	NULL, NULL, NULL, NULL, NULL, drvNATLoadDone);
589	AssertRC(rc2);
590	pDrvIns->pDrvHlp->pfnPDMPollerRegister(pDrvIns, drvNATPoller);
591
592	pThis->enmLinkState = PDMNETWORKLINKSTATE_UP;
593	#if 0
594	RTSemEventSignal(g_EventSem);
595	RTThreadSleep(0);
596	#endif
597	/* might return VINF_NAT_DNS */
598	return rc;
599	}
600	/* failure path */
601	rc = rc2;
602	slirp_term(pThis->pNATState);
603	pThis->pNATState = NULL;
604	}
605	else
606	{
607	PDMDRV_SET_ERROR(pDrvIns, rc, N_("Unknown error during NAT networking setup: "));
608	AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
609	}
610	#else
611	pDrvIns->pDrvHlp->pfnPDMPollerRegister(pDrvIns, drvNATPoller);
612	pThis->enmLinkState = PDMNETWORKLINKSTATE_UP;
613	mbuf_init(NULL);
614	struct nat_output_callbacks cb;
615	cb.noc_guest_out = drvNATOutput;
616	#if 0
617	cb.noc_host_udp_out = host_udp_out;
618	cb.noc_host_udp_in = host_udp_in;
619	#endif
620	nat_init(&cb);
621	ipfw_nat_init();
622	#endif
623	#if 0
624	g_fThreadTerm = true;
625	RTSemEventSignal(g_EventSem);
626	RTThreadSleep(0);
627	}
628	RTSemEventDestroy(g_EventSem);
629	g_EventSem = NULL;
630	}
631	#endif
632	#ifndef VBOX_NAT_SOURCES
633	RTCritSectDelete(&pThis->CritSect);
634	#endif
635	return rc;
636	}
637
638
639
640	/**
641	* NAT network transport driver registration record.
642	*/
643	const PDMDRVREG g_DrvNAT =
644	{
645	/* u32Version */
646	PDM_DRVREG_VERSION,
647	/* szDriverName */
648	"NAT",
649	/* pszDescription */
650	"NAT Network Transport Driver",
651	/* fFlags */
652	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
653	/* fClass. */
654	PDM_DRVREG_CLASS_NETWORK,
655	/* cMaxInstances */
656	16,
657	/* cbInstance */
658	sizeof(DRVNAT),
659	/* pfnConstruct */
660	drvNATConstruct,
661	/* pfnDestruct */
662	drvNATDestruct,
663	/* pfnIOCtl */
664	NULL,
665	/* pfnPowerOn */
666	drvNATPowerOn,
667	/* pfnReset */
668	NULL,
669	/* pfnSuspend */
670	NULL,
671	/* pfnResume */
672	NULL,
673	/* pfnDetach */
674	NULL,
675	/* pfnPowerOff */
676	NULL
677	};

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source: vbox/trunk/src/VBox/Devices/Network/DrvNAT.cpp@ 11444

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