DevINIP.cpp@ 25985

最後變更在這個檔案從25985是 25985,由 vboxsync 提交於 15 年前
pdmifs.h: the final batch of refactored interface ID code.
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1	/* $Id: DevINIP.cpp 25985 2010-01-23 00:51:04Z vboxsync $ */
2	/** @file
3	* DevINIP - Internal Network IP stack device/service.
4	*/
5
6	/*
7	* Copyright (C) 2007-2009 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_DEV_INIP
27	#include <iprt/cdefs.h> /* include early to allow RT_C_DECLS_BEGIN hack */
28	#include <iprt/mem.h> /* include anything of ours that the lwip headers use. */
29	#include <iprt/semaphore.h>
30	#include <iprt/thread.h>
31	#include <iprt/alloca.h>
32	/* All lwip header files are not C++ safe. So hack around this. */
33	RT_C_DECLS_BEGIN
34	#include "lwip/sys.h"
35	#include "lwip/stats.h"
36	#include "lwip/mem.h"
37	#include "lwip/memp.h"
38	#include "lwip/pbuf.h"
39	#include "lwip/netif.h"
40	#include "ipv4/lwip/ip.h"
41	#include "lwip/udp.h"
42	#include "lwip/tcp.h"
43	#include "lwip/tcpip.h"
44	#include "lwip/sockets.h"
45	#include "netif/etharp.h"
46	RT_C_DECLS_END
47	#include <VBox/pdmdev.h>
48	#include <VBox/tm.h>
49	#include <iprt/assert.h>
50	#include <iprt/string.h>
51	#include <iprt/uuid.h>
52
53	#include "../Builtins.h"
54
55
56	/*******************************************************************************
57	* Macros and Defines *
58	*******************************************************************************/
59
60	/** Maximum frame size this device can handle. */
61	#define DEVINIP_MAX_FRAME 1514
62
63
64	/*******************************************************************************
65	* Structures and Typedefs *
66	*******************************************************************************/
67
68	/**
69	* Internal Network IP stack device instance data.
70	*
71	* @implements PDMIBASE
72	* @implements PDMINETWORKPORT
73	*/
74	typedef struct DEVINTNETIP
75	{
76	/** The base interface for LUN\#0. */
77	PDMIBASE IBase;
78	/** The network port this device provides (LUN\#0). */
79	PDMINETWORKPORT INetworkPort;
80	/** The base interface of the network driver below us. */
81	PPDMIBASE pDrvBase;
82	/** The connector of the network driver below us. */
83	PPDMINETWORKCONNECTOR pDrv;
84	/** Pointer to the device instance. */
85	PPDMDEVINSR3 pDevIns;
86	/** MAC adress. */
87	RTMAC MAC;
88	/** Static IP address of the interface. */
89	char *pszIP;
90	/** Netmask of the interface. */
91	char *pszNetmask;
92	/** Gateway for the interface. */
93	char *pszGateway;
94	/** lwIP network interface description. */
95	struct netif IntNetIF;
96	/** lwIP ARP timer. */
97	PTMTIMERR3 ARPTimer;
98	/** lwIP TCP fast timer. */
99	PTMTIMERR3 TCPFastTimer;
100	/** lwIP TCP slow timer. */
101	PTMTIMERR3 TCPSlowTimer;
102	/** lwIP semaphore to coordinate TCPIP init/terminate. */
103	sys_sem_t LWIPTcpInitSem;
104	/** hack: get linking right. remove this eventually, once the device
105	* provides a proper interface to all IP stack functions. */
106	const void *pLinkHack;
107	} DEVINTNETIP, *PDEVINTNETIP;
108
109
110	/*******************************************************************************
111	* Global Variables *
112	*******************************************************************************/
113
114	/**
115	* Pointer to the (only) instance data in this device.
116	*/
117	static PDEVINTNETIP g_pDevINIPData = NULL;
118
119	/*
120	* really ugly hack to avoid linking problems on unix style platforms
121	* using .a libraries for now.
122	*/
123	static const PFNRT g_pDevINILinkHack[] =
124	{
125	(PFNRT)lwip_socket,
126	(PFNRT)lwip_close,
127	(PFNRT)lwip_setsockopt,
128	(PFNRT)lwip_recv,
129	(PFNRT)lwip_send,
130	(PFNRT)lwip_select
131	};
132
133
134	/*******************************************************************************
135	* Internal Functions *
136	*******************************************************************************/
137	static DECLCALLBACK(void) devINIPARPTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
138	static DECLCALLBACK(void) devINIPTCPFastTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
139	static DECLCALLBACK(void) devINIPTCPSlowTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
140	static DECLCALLBACK(err_t) devINIPOutput(struct netif netif, struct pbuf p,
141	struct ip_addr *ipaddr);
142	static DECLCALLBACK(err_t) devINIPOutputRaw(struct netif *netif,
143	struct pbuf *p);
144	static DECLCALLBACK(err_t) devINIPInterface(struct netif *netif);
145
146	/**
147	* ARP cache timeout handling for lwIP.
148	*
149	* @param pDevIns Device instance.
150	* @param pTimer Pointer to timer.
151	*/
152	static DECLCALLBACK(void) devINIPARPTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
153	{
154	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
155	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
156	lwip_etharp_tmr();
157	TMTimerSetMillies(pThis->ARPTimer, ARP_TMR_INTERVAL);
158	LogFlow(("%s: return\n", __FUNCTION__));
159	}
160
161	/**
162	* TCP fast timer handling for lwIP.
163	*
164	* @param pDevIns Device instance.
165	* @param pTimer Pointer to timer.
166	*/
167	static DECLCALLBACK(void) devINIPTCPFastTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
168	{
169	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
170	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
171	lwip_tcp_fasttmr();
172	TMTimerSetMillies(pThis->TCPFastTimer, TCP_FAST_INTERVAL);
173	LogFlow(("%s: return\n", __FUNCTION__));
174	}
175
176	/**
177	* TCP slow timer handling for lwIP.
178	*
179	* @param pDevIns Device instance.
180	* @param pTimer Pointer to timer.
181	*/
182	static DECLCALLBACK(void) devINIPTCPSlowTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
183	{
184	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
185	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
186	lwip_tcp_slowtmr();
187	TMTimerSetMillies(pThis->TCPSlowTimer, TCP_SLOW_INTERVAL);
188	LogFlow(("%s: return\n", __FUNCTION__));
189	}
190
191	/**
192	* Output a TCP/IP packet on the interface. Uses the generic lwIP ARP
193	* code to resolve the address and call the link-level packet function.
194	*
195	* @returns lwIP error code
196	* @param netif Interface on which to send IP packet.
197	* @param p Packet data.
198	* @param ipaddr Destination IP address.
199	*/
200	static DECLCALLBACK(err_t) devINIPOutput(struct netif netif, struct pbuf p,
201	struct ip_addr *ipaddr)
202	{
203	err_t lrc;
204	LogFlow(("%s: netif=%p p=%p ipaddr=%#04x\n", __FUNCTION__, netif, p,
205	ipaddr->addr));
206	lrc = lwip_etharp_output(netif, ipaddr, p);
207	LogFlow(("%s: return %d\n", __FUNCTION__, lrc));
208	return lrc;
209	}
210
211	/**
212	* Output a raw packet on the interface.
213	*
214	* @returns lwIP error code
215	* @param netif Interface on which to send frame.
216	* @param p Frame data.
217	*/
218	static DECLCALLBACK(err_t) devINIPOutputRaw(struct netif *netif,
219	struct pbuf *p)
220	{
221	uint8_t aFrame[DEVINIP_MAX_FRAME], *pbBuf;
222	size_t cbBuf;
223	struct pbuf *q;
224	int rc = VINF_SUCCESS;
225
226	LogFlow(("%s: netif=%p p=%p\n", __FUNCTION__, netif, p));
227	Assert(g_pDevINIPData);
228	Assert(g_pDevINIPData->pDrv);
229
230	/* Silently ignore packets being sent while lwIP isn't set up. */
231	if (!g_pDevINIPData)
232	goto out;
233
234	#if ETH_PAD_SIZE
235	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
236	#endif
237
238	pbBuf = &aFrame[0];
239	cbBuf = 0;
240	for (q = p; q != NULL; q = q->next)
241	{
242	if (cbBuf + q->len <= DEVINIP_MAX_FRAME)
243	{
244	memcpy(pbBuf, q->payload, q->len);
245	pbBuf += q->len;
246	cbBuf += q->len;
247	}
248	else
249	{
250	LogRel(("INIP: exceeded frame size\n"));
251	break;
252	}
253	}
254	if (cbBuf)
255	rc = g_pDevINIPData->pDrv->pfnSend(g_pDevINIPData->pDrv,
256	&aFrame[0], cbBuf);
257
258	#if ETH_PAD_SIZE
259	lwip_pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
260	#endif
261
262	out:
263	err_t lrc = ERR_OK;
264	if (RT_FAILURE(rc))
265	lrc = ERR_IF;
266	LogFlow(("%s: return %d (vbox: %Rrc)\n", __FUNCTION__, rc, lrc));
267	return lrc;
268	}
269
270	/**
271	* Implements the ethernet interface backend initialization for lwIP.
272	*
273	* @returns lwIP error code
274	* @param netif Interface to configure.
275	*/
276	static DECLCALLBACK(err_t) devINIPInterface(struct netif *netif)
277	{
278	LogFlow(("%s: netif=%p\n", __FUNCTION__, netif));
279	Assert(g_pDevINIPData != NULL);
280	netif->state = g_pDevINIPData;
281	netif->hwaddr_len = sizeof(g_pDevINIPData->MAC);
282	memcpy(netif->hwaddr, &g_pDevINIPData->MAC, sizeof(g_pDevINIPData->MAC));
283	netif->mtu = DEVINIP_MAX_FRAME;
284	netif->flags = NETIF_FLAG_BROADCAST;
285	netif->output = devINIPOutput;
286	netif->linkoutput = devINIPOutputRaw;
287
288	lwip_etharp_init();
289	TMTimerSetMillies(g_pDevINIPData->ARPTimer, ARP_TMR_INTERVAL);
290	LogFlow(("%s: success\n", __FUNCTION__));
291	return ERR_OK;
292	}
293
294	/**
295	* Wait until data can be received.
296	*
297	* @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
298	* @param pInterface PDM network port interface pointer.
299	* @param cMillies Number of milliseconds to wait. 0 means return immediately.
300	*/
301	static DECLCALLBACK(int) devINIPWaitInputAvail(PPDMINETWORKPORT pInterface, RTMSINTERVAL cMillies)
302	{
303	LogFlow(("%s: pInterface=%p\n", __FUNCTION__, pInterface));
304	LogFlow(("%s: return VINF_SUCCESS\n", __FUNCTION__));
305	return VINF_SUCCESS;
306	}
307
308	/**
309	* Receive data and pass it to lwIP for processing.
310	*
311	* @returns VBox status code
312	* @param pInterface PDM network port interface pointer.
313	* @param pvBuf Pointer to frame data.
314	* @param cb Frame size.
315	*/
316	static DECLCALLBACK(int) devINIPInput(PPDMINETWORKPORT pInterface,
317	const void *pvBuf, size_t cb)
318	{
319	const uint8_t pbBuf = (const uint8_t )pvBuf;
320	size_t len = cb;
321	const struct eth_hdr *ethhdr;
322	struct pbuf p, q;
323	int rc = VINF_SUCCESS;
324
325	LogFlow(("%s: pInterface=%p pvBuf=%p cb=%lu\n", __FUNCTION__, pInterface,
326	pvBuf, cb));
327	Assert(g_pDevINIPData);
328	Assert(g_pDevINIPData->pDrv);
329
330	/* Silently ignore packets being received while lwIP isn't set up. */
331	if (!g_pDevINIPData)
332	goto out;
333
334	#if ETH_PAD_SIZE
335	len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
336	#endif
337
338	/* We allocate a pbuf chain of pbufs from the pool. */
339	p = lwip_pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
340	if (p != NULL)
341	{
342	#if ETH_PAD_SIZE
343	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
344	#endif
345
346	for (q = p; q != NULL; q = q->next)
347	{
348	/* Fill the buffers, and clean out unused buffer space. */
349	memcpy(q->payload, pbBuf, RT_MIN(cb, q->len));
350	pbBuf += RT_MIN(cb, q->len);
351	if (q->len > cb)
352	memset(((uint8_t *)q->payload) + cb, '\0', q->len - cb);
353	cb -= RT_MIN(cb, q->len);
354	}
355
356	ethhdr = (const struct eth_hdr *)p->payload;
357	struct netif *iface = &g_pDevINIPData->IntNetIF;
358	err_t lrc;
359	switch (htons(ethhdr->type))
360	{
361	case ETHTYPE_IP: /* IP packet */
362	lwip_pbuf_header(p, -(ssize_t)sizeof(struct eth_hdr));
363	lrc = iface->input(p, iface);
364	if (lrc)
365	rc = VERR_NET_IO_ERROR;
366	break;
367	case ETHTYPE_ARP: /* ARP packet */
368	lwip_etharp_arp_input(iface, (struct eth_addr *)iface->hwaddr, p);
369	break;
370	default:
371	lwip_pbuf_free(p);
372	}
373	}
374
375	out:
376	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
377	return rc;
378	}
379
380	/**
381	* Signals the end of lwIP TCPIP initialization.
382	*
383	* @param arg opaque argument, here the pointer to the semaphore.
384	*/
385	static DECLCALLBACK(void) devINIPTcpipInitDone(void *arg)
386	{
387	sys_sem_t sem = (sys_sem_t )arg;
388	lwip_sys_sem_signal(*sem);
389	}
390
391
392	/**
393	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
394	*/
395	static DECLCALLBACK(void *) devINIPQueryInterface(PPDMIBASE pInterface,
396	const char *pszIID)
397	{
398	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, IBase);
399	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
400	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKPORT, &pThis->INetworkPort);
401	return NULL;
402	}
403
404
405	/**
406	* Construct an internal networking IP stack device instance.
407	*
408	* @returns VBox status.
409	* @param pDevIns The device instance data.
410	* If the registration structure is needed, pDevIns->pDevReg points to it.
411	* @param iInstance Instance number. Use this to figure out which registers
412	* and such to use.
413	* he device number is also found in pDevIns->iInstance, but since it's
414	* likely to be freqently used PDM passes it as parameter.
415	* @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration
416	* of the device instance. It's also found in pDevIns->pCfgHandle, but like
417	* iInstance it's expected to be used a bit in this function.
418	*/
419	static DECLCALLBACK(int) devINIPConstruct(PPDMDEVINS pDevIns, int iInstance,
420	PCFGMNODE pCfgHandle)
421	{
422	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
423	int rc = VINF_SUCCESS;
424	LogFlow(("%s: pDevIns=%p iInstance=%d pCfgHandle=%p\n", __FUNCTION__,
425	pDevIns, iInstance, pCfgHandle));
426
427	Assert(iInstance == 0);
428
429	/*
430	* Validate the config.
431	*/
432	if (!CFGMR3AreValuesValid(pCfgHandle, "MAC\0IP\0Netmask\0Gateway\0"))
433	{
434	rc = PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
435	N_("Unknown Internal Networking IP configuration option"));
436	goto out;
437	}
438
439	/*
440	* Init the static parts.
441	*/
442	pThis->pszIP = NULL;
443	pThis->pszNetmask = NULL;
444	pThis->pszGateway = NULL;
445	/* Pointer to device instance */
446	pThis->pDevIns = pDevIns;
447	/* IBase */
448	pThis->IBase.pfnQueryInterface = devINIPQueryInterface;
449	/* INetworkPort */
450	pThis->INetworkPort.pfnWaitReceiveAvail = devINIPWaitInputAvail;
451	pThis->INetworkPort.pfnReceive = devINIPInput;
452
453	/*
454	* Get the configuration settings.
455	*/
456	rc = CFGMR3QueryBytes(pCfgHandle, "MAC", &pThis->MAC, sizeof(pThis->MAC));
457	if (rc == VERR_CFGM_NOT_BYTES)
458	{
459	char szMAC[64];
460	rc = CFGMR3QueryString(pCfgHandle, "MAC", &szMAC[0], sizeof(szMAC));
461	if (RT_SUCCESS(rc))
462	{
463	char *macStr = &szMAC[0];
464	char pMac = (char )&pThis->MAC;
465	for (uint32_t i = 0; i < 6; i++)
466	{
467	if ( !macStr \|\| !(macStr + 1)
468	\|\| macStr == ':' \|\| (macStr + 1) == ':')
469	{
470	rc = PDMDEV_SET_ERROR(pDevIns,
471	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
472	N_("Configuration error: Invalid \"MAC\" value"));
473	goto out;
474	}
475	char c1 = *macStr++ - '0';
476	if (c1 > 9)
477	c1 -= 7;
478	char c2 = *macStr++ - '0';
479	if (c2 > 9)
480	c2 -= 7;
481	*pMac++ = ((c1 & 0x0f) << 4) \| (c2 & 0x0f);
482	if (i != 5 && *macStr == ':')
483	macStr++;
484	}
485	}
486	}
487	if (RT_FAILURE(rc))
488	{
489	PDMDEV_SET_ERROR(pDevIns, rc,
490	N_("Configuration error: Failed to get the \"MAC\" value"));
491	goto out;
492	}
493	rc = CFGMR3QueryStringAlloc(pCfgHandle, "IP", &pThis->pszIP);
494	if (RT_FAILURE(rc))
495	{
496	PDMDEV_SET_ERROR(pDevIns, rc,
497	N_("Configuration error: Failed to get the \"IP\" value"));
498	goto out;
499	}
500	rc = CFGMR3QueryStringAlloc(pCfgHandle, "Netmask", &pThis->pszNetmask);
501	if (RT_FAILURE(rc))
502	{
503	PDMDEV_SET_ERROR(pDevIns, rc,
504	N_("Configuration error: Failed to get the \"Netmask\" value"));
505	goto out;
506	}
507	rc = CFGMR3QueryStringAlloc(pCfgHandle, "Gateway", &pThis->pszGateway);
508	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
509	rc = VINF_SUCCESS;
510	if (RT_FAILURE(rc))
511	{
512	PDMDEV_SET_ERROR(pDevIns, rc,
513	N_("Configuration error: Failed to get the \"Gateway\" value"));
514	goto out;
515	}
516
517	/*
518	* Attach driver and query the network connector interface.
519	*/
520	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase,
521	"Network Port");
522	if (RT_FAILURE(rc))
523	{
524	pThis->pDrvBase = NULL;
525	pThis->pDrv = NULL;
526	goto out;
527	}
528	else
529	{
530	pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKCONNECTOR);
531	if (!pThis->pDrv)
532	{
533	AssertMsgFailed(("Failed to obtain the PDMINTERFACE_NETWORK_CONNECTOR interface!\n"));
534	rc = VERR_PDM_MISSING_INTERFACE_BELOW;
535	goto out;
536	}
537	}
538
539	struct ip_addr ipaddr, netmask, gw;
540	struct in_addr ip;
541
542	if (!inet_aton(pThis->pszIP, &ip))
543	{
544	rc = PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
545	N_("Configuration error: Invalid \"IP\" value"));
546	goto out;
547	}
548	memcpy(&ipaddr, &ip, sizeof(ipaddr));
549	if (!inet_aton(pThis->pszNetmask, &ip))
550	{
551	rc = PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
552	N_("Configuration error: Invalid \"Netmask\" value"));
553	goto out;
554	}
555	memcpy(&netmask, &ip, sizeof(netmask));
556	if (pThis->pszGateway)
557	{
558	if (!inet_aton(pThis->pszGateway, &ip))
559	{
560	rc = PDMDEV_SET_ERROR(pDevIns,
561	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
562	N_("Configuration error: Invalid \"Gateway\" value"));
563	goto out;
564	}
565	memcpy(&gw, &ip, sizeof(gw));
566	}
567	else
568	{
569	inet_aton(pThis->pszIP, &ip);
570	memcpy(&gw, &ip, sizeof(gw));
571	}
572
573	/*
574	* Initialize lwIP.
575	*/
576	lwip_stats_init();
577	lwip_sys_init();
578	#if MEM_LIBC_MALLOC == 0
579	lwip_mem_init();
580	#endif
581	lwip_memp_init();
582	lwip_pbuf_init();
583	lwip_netif_init();
584	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPARPTimer, pThis,
585	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP ARP", &pThis->ARPTimer);
586	if (RT_FAILURE(rc))
587	goto out;
588	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPFastTimer, pThis,
589	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP fast TCP", &pThis->TCPFastTimer);
590	if (RT_FAILURE(rc))
591	goto out;
592	TMTimerSetMillies(pThis->TCPFastTimer, TCP_FAST_INTERVAL);
593	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPSlowTimer, pThis,
594	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP slow TCP", &pThis->TCPSlowTimer);
595	if (RT_FAILURE(rc))
596	goto out;
597	TMTimerSetMillies(pThis->TCPFastTimer, TCP_SLOW_INTERVAL);
598	pThis->LWIPTcpInitSem = lwip_sys_sem_new(0);
599	{
600	lwip_tcpip_init(devINIPTcpipInitDone, &pThis->LWIPTcpInitSem);
601	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
602	}
603
604	/*
605	* Set up global pointer to interface data.
606	*/
607	g_pDevINIPData = pThis;
608
609	struct netif *ret;
610	pThis->IntNetIF.name[0] = 'I';
611	pThis->IntNetIF.name[1] = 'N';
612	ret = netif_add(&pThis->IntNetIF, &ipaddr, &netmask, &gw, NULL,
613	devINIPInterface, lwip_tcpip_input);
614	if (!ret)
615	{
616	rc = VERR_NET_NO_NETWORK;
617	goto out;
618	}
619
620	lwip_netif_set_default(&pThis->IntNetIF);
621	lwip_netif_set_up(&pThis->IntNetIF);
622
623	/* link hack */
624	pThis->pLinkHack = g_pDevINILinkHack;
625
626	out:
627	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
628	return rc;
629	}
630
631
632	/**
633	* Destruct a device instance.
634	*
635	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
636	* resources can be freed correctly.
637	*
638	* @returns VBox status.
639	* @param pDevIns The device instance data.
640	*/
641	static DECLCALLBACK(int) devINIPDestruct(PPDMDEVINS pDevIns)
642	{
643	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
644
645	LogFlow(("%s: pDevIns=%p\n", __FUNCTION__, pDevIns));
646
647	if (g_pDevINIPData != NULL)
648	{
649	netif_set_down(&pThis->IntNetIF);
650	netif_remove(&pThis->IntNetIF);
651	tcpip_terminate();
652	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
653	lwip_sys_sem_free(pThis->LWIPTcpInitSem);
654	}
655
656	if (pThis->pszIP)
657	MMR3HeapFree(pThis->pszIP);
658	if (pThis->pszNetmask)
659	MMR3HeapFree(pThis->pszNetmask);
660	if (pThis->pszGateway)
661	MMR3HeapFree(pThis->pszGateway);
662
663	LogFlow(("%s: success\n", __FUNCTION__));
664	return VINF_SUCCESS;
665	}
666
667
668	/**
669	* Query whether lwIP is initialized or not. Since there is only a single
670	* instance of this device ever for a VM, it can be a global function.
671	*
672	* @returns True if lwIP is initialized.
673	*/
674	bool DevINIPConfigured(void)
675	{
676	return g_pDevINIPData != NULL;
677	}
678
679
680	/**
681	* Internal network IP stack device registration record.
682	*/
683	const PDMDEVREG g_DeviceINIP =
684	{
685	/* u32Version */
686	PDM_DEVREG_VERSION,
687	/* szDeviceName */
688	"IntNetIP",
689	/* szRCMod/szR0Mod */
690	"",
691	"",
692	/* pszDescription */
693	"Internal Network IP stack device",
694	/* fFlags */
695	PDM_DEVREG_FLAGS_DEFAULT_BITS,
696	/* fClass. As this is used by the storage devices, it must come earlier. */
697	PDM_DEVREG_CLASS_VMM_DEV,
698	/* cMaxInstances */
699	1,
700	/* cbInstance */
701	sizeof(DEVINTNETIP),
702	/* pfnConstruct */
703	devINIPConstruct,
704	/* pfnDestruct */
705	devINIPDestruct,
706	/* pfnRelocate */
707	NULL,
708	/* pfnIOCtl */
709	NULL,
710	/* pfnPowerOn */
711	NULL,
712	/* pfnReset */
713	NULL,
714	/* pfnSuspend */
715	NULL,
716	/* pfnResume */
717	NULL,
718	/* pfnAttach */
719	NULL,
720	/* pfnDetach */
721	NULL,
722	/* pfnQueryInterface */
723	NULL,
724	/* pfnInitComplete */
725	NULL,
726	/* pfnPowerOff */
727	NULL,
728	/* pfnSoftReset */
729	NULL,
730	/* u32VersionEnd */
731	PDM_DEVREG_VERSION
732	};

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source: vbox/trunk/src/VBox/Devices/Network/DevINIP.cpp@ 25985

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