DevINIP.cpp@ 25981

Last change on this file since 25981 was 25981, checked in by vboxsync, 15 years ago
pdmifs.h: yet another batch of refactored interface ID code.
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File size: 22.9 KB

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1	/* $Id: DevINIP.cpp 25981 2010-01-22 18:42:01Z 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.215389.xyz. 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	if (RTUuidCompare2Strs(pszIID, PDMIBASE_IID) == 0)
400	return &pThis->IBase;
401	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKPORT, &pThis->INetworkPort);
402	return NULL;
403	}
404
405
406	/**
407	* Construct an internal networking IP stack device instance.
408	*
409	* @returns VBox status.
410	* @param pDevIns The device instance data.
411	* If the registration structure is needed, pDevIns->pDevReg points to it.
412	* @param iInstance Instance number. Use this to figure out which registers
413	* and such to use.
414	* he device number is also found in pDevIns->iInstance, but since it's
415	* likely to be freqently used PDM passes it as parameter.
416	* @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration
417	* of the device instance. It's also found in pDevIns->pCfgHandle, but like
418	* iInstance it's expected to be used a bit in this function.
419	*/
420	static DECLCALLBACK(int) devINIPConstruct(PPDMDEVINS pDevIns, int iInstance,
421	PCFGMNODE pCfgHandle)
422	{
423	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
424	int rc = VINF_SUCCESS;
425	LogFlow(("%s: pDevIns=%p iInstance=%d pCfgHandle=%p\n", __FUNCTION__,
426	pDevIns, iInstance, pCfgHandle));
427
428	Assert(iInstance == 0);
429
430	/*
431	* Validate the config.
432	*/
433	if (!CFGMR3AreValuesValid(pCfgHandle, "MAC\0IP\0Netmask\0Gateway\0"))
434	{
435	rc = PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
436	N_("Unknown Internal Networking IP configuration option"));
437	goto out;
438	}
439
440	/*
441	* Init the static parts.
442	*/
443	pThis->pszIP = NULL;
444	pThis->pszNetmask = NULL;
445	pThis->pszGateway = NULL;
446	/* Pointer to device instance */
447	pThis->pDevIns = pDevIns;
448	/* IBase */
449	pThis->IBase.pfnQueryInterface = devINIPQueryInterface;
450	/* INetworkPort */
451	pThis->INetworkPort.pfnWaitReceiveAvail = devINIPWaitInputAvail;
452	pThis->INetworkPort.pfnReceive = devINIPInput;
453
454	/*
455	* Get the configuration settings.
456	*/
457	rc = CFGMR3QueryBytes(pCfgHandle, "MAC", &pThis->MAC, sizeof(pThis->MAC));
458	if (rc == VERR_CFGM_NOT_BYTES)
459	{
460	char szMAC[64];
461	rc = CFGMR3QueryString(pCfgHandle, "MAC", &szMAC[0], sizeof(szMAC));
462	if (RT_SUCCESS(rc))
463	{
464	char *macStr = &szMAC[0];
465	char pMac = (char )&pThis->MAC;
466	for (uint32_t i = 0; i < 6; i++)
467	{
468	if ( !macStr \|\| !(macStr + 1)
469	\|\| macStr == ':' \|\| (macStr + 1) == ':')
470	{
471	rc = PDMDEV_SET_ERROR(pDevIns,
472	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
473	N_("Configuration error: Invalid \"MAC\" value"));
474	goto out;
475	}
476	char c1 = *macStr++ - '0';
477	if (c1 > 9)
478	c1 -= 7;
479	char c2 = *macStr++ - '0';
480	if (c2 > 9)
481	c2 -= 7;
482	*pMac++ = ((c1 & 0x0f) << 4) \| (c2 & 0x0f);
483	if (i != 5 && *macStr == ':')
484	macStr++;
485	}
486	}
487	}
488	if (RT_FAILURE(rc))
489	{
490	PDMDEV_SET_ERROR(pDevIns, rc,
491	N_("Configuration error: Failed to get the \"MAC\" value"));
492	goto out;
493	}
494	rc = CFGMR3QueryStringAlloc(pCfgHandle, "IP", &pThis->pszIP);
495	if (RT_FAILURE(rc))
496	{
497	PDMDEV_SET_ERROR(pDevIns, rc,
498	N_("Configuration error: Failed to get the \"IP\" value"));
499	goto out;
500	}
501	rc = CFGMR3QueryStringAlloc(pCfgHandle, "Netmask", &pThis->pszNetmask);
502	if (RT_FAILURE(rc))
503	{
504	PDMDEV_SET_ERROR(pDevIns, rc,
505	N_("Configuration error: Failed to get the \"Netmask\" value"));
506	goto out;
507	}
508	rc = CFGMR3QueryStringAlloc(pCfgHandle, "Gateway", &pThis->pszGateway);
509	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
510	rc = VINF_SUCCESS;
511	if (RT_FAILURE(rc))
512	{
513	PDMDEV_SET_ERROR(pDevIns, rc,
514	N_("Configuration error: Failed to get the \"Gateway\" value"));
515	goto out;
516	}
517
518	/*
519	* Attach driver and query the network connector interface.
520	*/
521	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase,
522	"Network Port");
523	if (RT_FAILURE(rc))
524	{
525	pThis->pDrvBase = NULL;
526	pThis->pDrv = NULL;
527	goto out;
528	}
529	else
530	{
531	pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKCONNECTOR);
532	if (!pThis->pDrv)
533	{
534	AssertMsgFailed(("Failed to obtain the PDMINTERFACE_NETWORK_CONNECTOR interface!\n"));
535	rc = VERR_PDM_MISSING_INTERFACE_BELOW;
536	goto out;
537	}
538	}
539
540	struct ip_addr ipaddr, netmask, gw;
541	struct in_addr ip;
542
543	if (!inet_aton(pThis->pszIP, &ip))
544	{
545	rc = PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
546	N_("Configuration error: Invalid \"IP\" value"));
547	goto out;
548	}
549	memcpy(&ipaddr, &ip, sizeof(ipaddr));
550	if (!inet_aton(pThis->pszNetmask, &ip))
551	{
552	rc = PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
553	N_("Configuration error: Invalid \"Netmask\" value"));
554	goto out;
555	}
556	memcpy(&netmask, &ip, sizeof(netmask));
557	if (pThis->pszGateway)
558	{
559	if (!inet_aton(pThis->pszGateway, &ip))
560	{
561	rc = PDMDEV_SET_ERROR(pDevIns,
562	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
563	N_("Configuration error: Invalid \"Gateway\" value"));
564	goto out;
565	}
566	memcpy(&gw, &ip, sizeof(gw));
567	}
568	else
569	{
570	inet_aton(pThis->pszIP, &ip);
571	memcpy(&gw, &ip, sizeof(gw));
572	}
573
574	/*
575	* Initialize lwIP.
576	*/
577	lwip_stats_init();
578	lwip_sys_init();
579	#if MEM_LIBC_MALLOC == 0
580	lwip_mem_init();
581	#endif
582	lwip_memp_init();
583	lwip_pbuf_init();
584	lwip_netif_init();
585	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPARPTimer, pThis,
586	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP ARP", &pThis->ARPTimer);
587	if (RT_FAILURE(rc))
588	goto out;
589	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPFastTimer, pThis,
590	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP fast TCP", &pThis->TCPFastTimer);
591	if (RT_FAILURE(rc))
592	goto out;
593	TMTimerSetMillies(pThis->TCPFastTimer, TCP_FAST_INTERVAL);
594	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPSlowTimer, pThis,
595	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP slow TCP", &pThis->TCPSlowTimer);
596	if (RT_FAILURE(rc))
597	goto out;
598	TMTimerSetMillies(pThis->TCPFastTimer, TCP_SLOW_INTERVAL);
599	pThis->LWIPTcpInitSem = lwip_sys_sem_new(0);
600	{
601	lwip_tcpip_init(devINIPTcpipInitDone, &pThis->LWIPTcpInitSem);
602	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
603	}
604
605	/*
606	* Set up global pointer to interface data.
607	*/
608	g_pDevINIPData = pThis;
609
610	struct netif *ret;
611	pThis->IntNetIF.name[0] = 'I';
612	pThis->IntNetIF.name[1] = 'N';
613	ret = netif_add(&pThis->IntNetIF, &ipaddr, &netmask, &gw, NULL,
614	devINIPInterface, lwip_tcpip_input);
615	if (!ret)
616	{
617	rc = VERR_NET_NO_NETWORK;
618	goto out;
619	}
620
621	lwip_netif_set_default(&pThis->IntNetIF);
622	lwip_netif_set_up(&pThis->IntNetIF);
623
624	/* link hack */
625	pThis->pLinkHack = g_pDevINILinkHack;
626
627	out:
628	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
629	return rc;
630	}
631
632
633	/**
634	* Destruct a device instance.
635	*
636	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
637	* resources can be freed correctly.
638	*
639	* @returns VBox status.
640	* @param pDevIns The device instance data.
641	*/
642	static DECLCALLBACK(int) devINIPDestruct(PPDMDEVINS pDevIns)
643	{
644	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
645
646	LogFlow(("%s: pDevIns=%p\n", __FUNCTION__, pDevIns));
647
648	if (g_pDevINIPData != NULL)
649	{
650	netif_set_down(&pThis->IntNetIF);
651	netif_remove(&pThis->IntNetIF);
652	tcpip_terminate();
653	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
654	lwip_sys_sem_free(pThis->LWIPTcpInitSem);
655	}
656
657	if (pThis->pszIP)
658	MMR3HeapFree(pThis->pszIP);
659	if (pThis->pszNetmask)
660	MMR3HeapFree(pThis->pszNetmask);
661	if (pThis->pszGateway)
662	MMR3HeapFree(pThis->pszGateway);
663
664	LogFlow(("%s: success\n", __FUNCTION__));
665	return VINF_SUCCESS;
666	}
667
668
669	/**
670	* Query whether lwIP is initialized or not. Since there is only a single
671	* instance of this device ever for a VM, it can be a global function.
672	*
673	* @returns True if lwIP is initialized.
674	*/
675	bool DevINIPConfigured(void)
676	{
677	return g_pDevINIPData != NULL;
678	}
679
680
681	/**
682	* Internal network IP stack device registration record.
683	*/
684	const PDMDEVREG g_DeviceINIP =
685	{
686	/* u32Version */
687	PDM_DEVREG_VERSION,
688	/* szDeviceName */
689	"IntNetIP",
690	/* szRCMod/szR0Mod */
691	"",
692	"",
693	/* pszDescription */
694	"Internal Network IP stack device",
695	/* fFlags */
696	PDM_DEVREG_FLAGS_DEFAULT_BITS,
697	/* fClass. As this is used by the storage devices, it must come earlier. */
698	PDM_DEVREG_CLASS_VMM_DEV,
699	/* cMaxInstances */
700	1,
701	/* cbInstance */
702	sizeof(DEVINTNETIP),
703	/* pfnConstruct */
704	devINIPConstruct,
705	/* pfnDestruct */
706	devINIPDestruct,
707	/* pfnRelocate */
708	NULL,
709	/* pfnIOCtl */
710	NULL,
711	/* pfnPowerOn */
712	NULL,
713	/* pfnReset */
714	NULL,
715	/* pfnSuspend */
716	NULL,
717	/* pfnResume */
718	NULL,
719	/* pfnAttach */
720	NULL,
721	/* pfnDetach */
722	NULL,
723	/* pfnQueryInterface */
724	NULL,
725	/* pfnInitComplete */
726	NULL,
727	/* pfnPowerOff */
728	NULL,
729	/* pfnSoftReset */
730	NULL,
731	/* u32VersionEnd */
732	PDM_DEVREG_VERSION
733	};

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source: vbox/trunk/src/VBox/Devices/Network/DevINIP.cpp@ 25981

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