DevINIP.cpp@ 51898

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1	/* $Id: DevINIP.cpp 48947 2013-10-07 21:41:00Z vboxsync $ */
2	/** @file
3	* DevINIP - Internal Network IP stack device/service.
4	*/
5
6	/*
7	* Copyright (C) 2007-2013 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DEV_INIP
23	#include <iprt/cdefs.h> /* include early to allow RT_C_DECLS_BEGIN hack */
24	#include <iprt/mem.h> /* include anything of ours that the lwip headers use. */
25	#include <iprt/semaphore.h>
26	#include <iprt/thread.h>
27	#include <iprt/alloca.h>
28	/* All lwip header files are not C++ safe. So hack around this. */
29	RT_C_DECLS_BEGIN
30	#include "lwip/sys.h"
31	#include "lwip/stats.h"
32	#include "lwip/mem.h"
33	#include "lwip/memp.h"
34	#include "lwip/pbuf.h"
35	#include "lwip/netif.h"
36	#ifndef VBOX_WITH_NEW_LWIP
37	# include "ipv4/lwip/ip.h"
38	#else
39	# include "lwip/api.h"
40	# include "lwip/tcp_impl.h"
41	# include "ipv6/lwip/ethip6.h"
42	#endif
43	#include "lwip/udp.h"
44	#include "lwip/tcp.h"
45	#include "lwip/tcpip.h"
46	#include "lwip/sockets.h"
47	#include "netif/etharp.h"
48	RT_C_DECLS_END
49	#include <VBox/vmm/pdmdev.h>
50	#include <VBox/vmm/pdmnetifs.h>
51	#include <VBox/vmm/tm.h>
52	#include <iprt/assert.h>
53	#include <iprt/string.h>
54	#include <iprt/uuid.h>
55
56	#include "VBoxDD.h"
57
58	#ifdef VBOX_WITH_NEW_LWIP
59	# include "VBoxLwipCore.h"
60	#endif
61
62	/*******************************************************************************
63	* Macros and Defines *
64	*******************************************************************************/
65
66	/** Maximum frame size this device can handle. */
67	#define DEVINIP_MAX_FRAME 1514
68
69
70	/*******************************************************************************
71	* Structures and Typedefs *
72	*******************************************************************************/
73
74	/**
75	* Internal Network IP stack device instance data.
76	*
77	* @implements PDMIBASE
78	* @implements PDMINETWORKDOWN
79	*/
80	typedef struct DEVINTNETIP
81	{
82	/** The base interface for LUN\#0. */
83	PDMIBASE IBase;
84	/** The network port this device provides (LUN\#0). */
85	PDMINETWORKDOWN INetworkDown;
86	/** The network configuration port this device provides (LUN\#0). */
87	PDMINETWORKCONFIG INetworkConfig;
88	/** The base interface of the network driver below us. */
89	PPDMIBASE pDrvBase;
90	/** The connector of the network driver below us. */
91	PPDMINETWORKUP pDrv;
92	/** Pointer to the device instance. */
93	PPDMDEVINSR3 pDevIns;
94	/** MAC address. */
95	RTMAC MAC;
96	/** Static IP address of the interface. */
97	char *pszIP;
98	/** Netmask of the interface. */
99	char *pszNetmask;
100	/** Gateway for the interface. */
101	char *pszGateway;
102	/** lwIP network interface description. */
103	struct netif IntNetIF;
104	/** lwIP ARP timer. */
105	PTMTIMERR3 ARPTimer;
106	/** lwIP TCP fast timer. */
107	PTMTIMERR3 TCPFastTimer;
108	/** lwIP TCP slow timer. */
109	PTMTIMERR3 TCPSlowTimer;
110	/** lwIP semaphore to coordinate TCPIP init/terminate. */
111	sys_sem_t LWIPTcpInitSem;
112	/** hack: get linking right. remove this eventually, once the device
113	* provides a proper interface to all IP stack functions. */
114	const void *pLinkHack;
115	/** Flag whether the link is up. */
116	bool fLnkUp;
117	#ifndef VBOX_WITH_NEW_LWIP
118	/**
119	* This hack-flag for spliting initialization logic in devINIPTcpipInitDone,
120	* this is the only place when during initialization we can be called from TCPIP
121	* thread.
122	* This callback used for Initialization and Finalization with old lwip.
123	*/
124	bool fTermination;
125	#endif
126	/**
127	* In callback we're getting status of interface adding operation (TCPIP thread),
128	* but we need inform constructing routine whether it was success or not(EMT thread).
129	*/
130	int rcInitialization;
131	} DEVINTNETIP, *PDEVINTNETIP;
132
133
134	/*******************************************************************************
135	* Global Variables *
136	*******************************************************************************/
137
138	/**
139	* Pointer to the (only) instance data in this device.
140	*/
141	static PDEVINTNETIP g_pDevINIPData = NULL;
142
143	/*
144	* really ugly hack to avoid linking problems on unix style platforms
145	* using .a libraries for now.
146	*/
147	static const PFNRT g_pDevINILinkHack[] =
148	{
149	(PFNRT)lwip_socket,
150	(PFNRT)lwip_close,
151	(PFNRT)lwip_setsockopt,
152	(PFNRT)lwip_recv,
153	(PFNRT)lwip_send,
154	(PFNRT)lwip_select
155	};
156
157
158	/*******************************************************************************
159	* Internal Functions *
160	*******************************************************************************/
161	#ifndef VBOX_WITH_NEW_LWIP
162	static DECLCALLBACK(void) devINIPARPTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
163	static DECLCALLBACK(void) devINIPTCPFastTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
164	static DECLCALLBACK(void) devINIPTCPSlowTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
165	#endif
166	static DECLCALLBACK(err_t) devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr);
167	static DECLCALLBACK(err_t) devINIPOutputRaw(struct netif netif, struct pbuf p);
168	static DECLCALLBACK(err_t) devINIPInterface(struct netif *netif);
169
170
171	#ifndef VBOX_WITH_NEW_LWIP
172	/**
173	* ARP cache timeout handling for lwIP.
174	*
175	* @param pDevIns Device instance.
176	* @param pTimer Pointer to timer.
177	*/
178	static DECLCALLBACK(void) devINIPARPTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
179	{
180	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
181	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
182	lwip_etharp_tmr();
183	TMTimerSetMillies(pThis->ARPTimer, ARP_TMR_INTERVAL);
184	LogFlow(("%s: return\n", __FUNCTION__));
185	}
186
187	/**
188	* TCP fast timer handling for lwIP.
189	*
190	* @param pDevIns Device instance.
191	* @param pTimer Pointer to timer.
192	*/
193	static DECLCALLBACK(void) devINIPTCPFastTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
194	{
195	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
196	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
197	lwip_tcp_fasttmr();
198	TMTimerSetMillies(pThis->TCPFastTimer, TCP_FAST_INTERVAL);
199	LogFlow(("%s: return\n", __FUNCTION__));
200	}
201
202	/**
203	* TCP slow timer handling for lwIP.
204	*
205	* @param pDevIns Device instance.
206	* @param pTimer Pointer to timer.
207	*/
208	static DECLCALLBACK(void) devINIPTCPSlowTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
209	{
210	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
211	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
212	lwip_tcp_slowtmr();
213	TMTimerSetMillies(pThis->TCPSlowTimer, TCP_SLOW_INTERVAL);
214	LogFlow(("%s: return\n", __FUNCTION__));
215	}
216	#endif /* VBOX_WITH_NEW_LWIP */
217
218	/**
219	* Output a TCP/IP packet on the interface. Uses the generic lwIP ARP
220	* code to resolve the address and call the link-level packet function.
221	*
222	* @returns lwIP error code
223	* @param netif Interface on which to send IP packet.
224	* @param p Packet data.
225	* @param ipaddr Destination IP address.
226	*/
227	static DECLCALLBACK(err_t) devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr)
228	{
229	err_t lrc;
230	LogFlow(("%s: netif=%p p=%p ipaddr=%#04x\n", __FUNCTION__, netif, p,
231	ipaddr->addr));
232	#ifndef VBOX_WITH_NEW_LWIP
233	lrc = lwip_etharp_output(netif, ipaddr, p);
234	#else
235	lrc = lwip_etharp_output(netif, p, ipaddr);
236	#endif
237	LogFlow(("%s: return %d\n", __FUNCTION__, lrc));
238	return lrc;
239	}
240
241	/**
242	* Output a raw packet on the interface.
243	*
244	* @returns lwIP error code
245	* @param netif Interface on which to send frame.
246	* @param p Frame data.
247	*/
248	static DECLCALLBACK(err_t) devINIPOutputRaw(struct netif netif, struct pbuf p)
249	{
250	int rc = VINF_SUCCESS;
251
252	LogFlow(("%s: netif=%p p=%p\n", __FUNCTION__, netif, p));
253	Assert(g_pDevINIPData);
254	Assert(g_pDevINIPData->pDrv);
255
256	/* Silently ignore packets being sent while lwIP isn't set up. */
257	if (g_pDevINIPData)
258	{
259	PPDMSCATTERGATHER pSgBuf;
260
261	rc = g_pDevINIPData->pDrv->pfnBeginXmit(g_pDevINIPData->pDrv, true /* fOnWorkerThread */);
262	if (RT_FAILURE(rc))
263	return ERR_IF;
264
265	rc = g_pDevINIPData->pDrv->pfnAllocBuf(g_pDevINIPData->pDrv, DEVINIP_MAX_FRAME, NULL /pGso/, &pSgBuf);
266	if (RT_SUCCESS(rc))
267	{
268	#if ETH_PAD_SIZE
269	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
270	#endif
271
272	uint8_t pbBuf = pSgBuf ? (uint8_t )pSgBuf->aSegs[0].pvSeg : NULL;
273	size_t cbBuf = 0;
274	for (struct pbuf *q = p; q != NULL; q = q->next)
275	{
276	if (cbBuf + q->len <= DEVINIP_MAX_FRAME)
277	{
278	if (RT_LIKELY(pbBuf))
279	{
280	memcpy(pbBuf, q->payload, q->len);
281	pbBuf += q->len;
282	}
283	cbBuf += q->len;
284	}
285	else
286	{
287	LogRel(("INIP: exceeded frame size\n"));
288	break;
289	}
290	}
291	if (cbBuf)
292	{
293	pSgBuf->cbUsed = cbBuf;
294	rc = g_pDevINIPData->pDrv->pfnSendBuf(g_pDevINIPData->pDrv, pSgBuf, true /* fOnWorkerThread */);
295	}
296	else
297	rc = g_pDevINIPData->pDrv->pfnFreeBuf(g_pDevINIPData->pDrv, pSgBuf);
298
299	#if ETH_PAD_SIZE
300	lwip_pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
301	#endif
302	}
303
304	g_pDevINIPData->pDrv->pfnEndXmit(g_pDevINIPData->pDrv);
305	}
306
307	err_t lrc = ERR_OK;
308	if (RT_FAILURE(rc))
309	lrc = ERR_IF;
310	LogFlow(("%s: return %d (vbox: %Rrc)\n", __FUNCTION__, rc, lrc));
311	return lrc;
312	}
313
314	/**
315	* Implements the ethernet interface backend initialization for lwIP.
316	*
317	* @returns lwIP error code
318	* @param netif Interface to configure.
319	*/
320	static DECLCALLBACK(err_t) devINIPInterface(struct netif *netif)
321	{
322	LogFlow(("%s: netif=%p\n", __FUNCTION__, netif));
323	Assert(g_pDevINIPData != NULL);
324	netif->state = g_pDevINIPData;
325	netif->hwaddr_len = sizeof(g_pDevINIPData->MAC);
326	memcpy(netif->hwaddr, &g_pDevINIPData->MAC, sizeof(g_pDevINIPData->MAC));
327	netif->mtu = DEVINIP_MAX_FRAME;
328	netif->flags = NETIF_FLAG_BROADCAST;
329	#ifdef VBOX_WITH_NEW_LWIP
330	/** @todo why explicit ARP routing required for 1.2.0 case? */
331	netif->flags \|= NETIF_FLAG_ETHARP;
332	netif->flags \|= NETIF_FLAG_ETHERNET;
333	/* Note! We always assign link-local IPv6 address */
334	netif_create_ip6_linklocal_address(netif, 0);
335	netif_ip6_addr_set_state(netif, 0, IP6_ADDR_VALID);
336	netif->output_ip6 = ethip6_output;
337	netif->ip6_autoconfig_enabled=1;
338	LogFunc(("netif: ipv6:%RTnaipv6\n", &netif->ip6_addr[0].addr[0]));
339	netif->output = lwip_etharp_output;
340
341	lwip_etharp_init();
342	#else
343	netif->output = devINIPOutput;
344
345	lwip_etharp_init();
346	TMTimerSetMillies(g_pDevINIPData->ARPTimer, ARP_TMR_INTERVAL);
347	#endif
348	netif->linkoutput = devINIPOutputRaw;
349
350	LogFlow(("%s: success\n", __FUNCTION__));
351	return ERR_OK;
352	}
353
354	/**
355	* Parses CFGM parameters related to network connection
356	*/
357	static DECLCALLBACK(int) devINIPNetworkConfiguration(PPDMDEVINS pDevIns, PDEVINTNETIP pThis, PCFGMNODE pCfg)
358	{
359	int rc = VINF_SUCCESS;
360	rc = CFGMR3QueryStringAlloc(pCfg, "IP", &pThis->pszIP);
361	if (RT_FAILURE(rc))
362	{
363	PDMDEV_SET_ERROR(pDevIns, rc,
364	N_("Configuration error: Failed to get the \"IP\" value"));
365	/* @todo: perhaps we should panic if IPv4 address isn't specify, with assumtion that
366	* ISCSI target specified in IPv6 form.
367	*/
368	return rc;
369	}
370
371	rc = CFGMR3QueryStringAlloc(pCfg, "Netmask", &pThis->pszNetmask);
372	if (RT_FAILURE(rc))
373	{
374	PDMDEV_SET_ERROR(pDevIns, rc,
375	N_("Configuration error: Failed to get the \"Netmask\" value"));
376	return rc;
377	}
378	rc = CFGMR3QueryStringAlloc(pCfg, "Gateway", &pThis->pszGateway);
379	if ( RT_FAILURE(rc)
380	&& rc != VERR_CFGM_VALUE_NOT_FOUND)
381	{
382	PDMDEV_SET_ERROR(pDevIns, rc,
383	N_("Configuration error: Failed to get the \"Gateway\" value"));
384	return rc;
385	}
386	return VINF_SUCCESS;
387	}
388
389	/**
390	* Wait until data can be received.
391	*
392	* @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
393	* @param pInterface PDM network port interface pointer.
394	* @param cMillies Number of milliseconds to wait. 0 means return immediately.
395	*/
396	static DECLCALLBACK(int) devINIPNetworkDown_WaitInputAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
397	{
398	LogFlow(("%s: pInterface=%p\n", __FUNCTION__, pInterface));
399	LogFlow(("%s: return VINF_SUCCESS\n", __FUNCTION__));
400	return VINF_SUCCESS;
401	}
402
403	/**
404	* Receive data and pass it to lwIP for processing.
405	*
406	* @returns VBox status code
407	* @param pInterface PDM network port interface pointer.
408	* @param pvBuf Pointer to frame data.
409	* @param cb Frame size.
410	*/
411	static DECLCALLBACK(int) devINIPNetworkDown_Input(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
412	{
413	const uint8_t pbBuf = (const uint8_t )pvBuf;
414	size_t len = cb;
415	const struct eth_hdr *ethhdr;
416	struct pbuf p, q;
417	int rc = VINF_SUCCESS;
418
419	LogFlow(("%s: pInterface=%p pvBuf=%p cb=%lu\n", __FUNCTION__, pInterface, pvBuf, cb));
420	Assert(g_pDevINIPData);
421	Assert(g_pDevINIPData->pDrv);
422
423	/* Silently ignore packets being received while lwIP isn't set up. */
424	if (!g_pDevINIPData)
425	{
426	LogFlow(("%s: return %Rrc (no global)\n", __FUNCTION__, rc));
427	return VINF_SUCCESS;
428	}
429
430	#if ETH_PAD_SIZE
431	len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
432	#endif
433
434	/* We allocate a pbuf chain of pbufs from the pool. */
435	p = lwip_pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
436	if (p != NULL)
437	{
438	#if ETH_PAD_SIZE
439	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
440	#endif
441
442	for (q = p; q != NULL; q = q->next)
443	{
444	/* Fill the buffers, and clean out unused buffer space. */
445	memcpy(q->payload, pbBuf, RT_MIN(cb, q->len));
446	pbBuf += RT_MIN(cb, q->len);
447	if (q->len > cb)
448	memset(((uint8_t *)q->payload) + cb, '\0', q->len - cb);
449	cb -= RT_MIN(cb, q->len);
450	}
451
452	ethhdr = (const struct eth_hdr *)p->payload;
453	struct netif *iface = &g_pDevINIPData->IntNetIF;
454	#ifndef VBOX_WITH_NEW_LWIP
455	err_t lrc;
456	switch (htons(ethhdr->type))
457	{
458	case ETHTYPE_IP: /* IP packet */
459	lwip_pbuf_header(p, -(ssize_t)sizeof(struct eth_hdr));
460	lrc = iface->input(p, iface);
461	if (lrc)
462	rc = VERR_NET_IO_ERROR;
463	break;
464	case ETHTYPE_ARP: /* ARP packet */
465	lwip_etharp_arp_input(iface, (struct eth_addr *)iface->hwaddr, p);
466	break;
467	default:
468	lwip_pbuf_free(p);
469	}
470	#else
471	/* We've setup flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET
472	so this should be thread-safe. */
473	tcpip_input(p,iface);
474	#endif
475	}
476
477	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
478	return rc;
479	}
480
481	/**
482	* @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
483	*/
484	static DECLCALLBACK(void) devINIPNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
485	{
486	NOREF(pInterface);
487	}
488
489
490	/**
491	* Signals the end of lwIP TCPIP initialization.
492	*
493	* @note: TCPIP thread, corresponding EMT waiting on semaphore.
494	* @param arg opaque argument, here the pointer to the PDEVINTNETIP.
495	*/
496	static DECLCALLBACK(void) devINIPTcpipInitDone(void *arg)
497	{
498	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
499	AssertPtrReturnVoid(arg);
500
501	pThis->rcInitialization = VINF_SUCCESS;
502	#ifndef VBOX_WITH_NEW_LWIP
503	/* see PDEVINTNETIP::fTermination */
504	if (!pThis->fTermination)
505	{
506	#endif
507	struct netif *ret;
508	struct ip_addr ipaddr, netmask, gw;
509	struct in_addr ip;
510
511	if (!inet_aton(pThis->pszIP, &ip))
512	{
513	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
514	PDMDEV_SET_ERROR(pThis->pDevIns,
515	pThis->rcInitialization,
516	N_("Configuration error: Invalid \"IP\" value"));
517	goto done;
518	}
519	memcpy(&ipaddr, &ip, sizeof(ipaddr));
520
521	if (!inet_aton(pThis->pszNetmask, &ip))
522	{
523	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
524	PDMDEV_SET_ERROR(pThis->pDevIns,
525	pThis->rcInitialization,
526	N_("Configuration error: Invalid \"Netmask\" value"));
527	goto done;
528	}
529	memcpy(&netmask, &ip, sizeof(netmask));
530
531	if (pThis->pszGateway)
532	{
533	if (!inet_aton(pThis->pszGateway, &ip))
534	{
535	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
536	PDMDEV_SET_ERROR(pThis->pDevIns,
537	pThis->rcInitialization,
538	N_("Configuration error: Invalid \"Gateway\" value"));
539	goto done;
540	}
541
542	}
543	else
544	{
545	inet_aton(pThis->pszIP, &ip);
546	}
547	memcpy(&gw, &ip, sizeof(gw));
548
549	pThis->IntNetIF.name[0] = 'I';
550	pThis->IntNetIF.name[1] = 'N';
551
552	ret = netif_add(&pThis->IntNetIF, &ipaddr, &netmask, &gw, NULL,
553	devINIPInterface, lwip_tcpip_input);
554
555	if (!ret)
556	{
557
558	pThis->rcInitialization = VERR_NET_NO_NETWORK;
559	PDMDEV_SET_ERROR(pThis->pDevIns,
560	pThis->rcInitialization,
561	N_("netif_add failed"));
562	goto done;
563	}
564
565	lwip_netif_set_default(&pThis->IntNetIF);
566	lwip_netif_set_up(&pThis->IntNetIF);
567
568	#ifndef VBOX_WITH_NEW_LWIP
569	}
570	done:
571	lwip_sys_sem_signal(pThis->LWIPTcpInitSem);
572	#else
573	done:
574	return;
575	#endif
576	}
577
578	#ifdef VBOX_WITH_NEW_LWIP
579	/**
580	* This callback is for finitializing our activity on TCPIP thread.
581	* XXX: We do it only for new LWIP, old LWIP will stay broken for now.
582	*/
583	static DECLCALLBACK(void) devINIPTcpipFiniDone(void *arg)
584	{
585	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
586	AssertPtrReturnVoid(arg);
587
588	netif_set_link_down(&pThis->IntNetIF);
589	netif_set_down(&pThis->IntNetIF);
590	netif_remove(&pThis->IntNetIF);
591	}
592	#endif
593
594
595	/**
596	* Gets the current Media Access Control (MAC) address.
597	*
598	* @returns VBox status code.
599	* @param pInterface Pointer to the interface structure containing the called function pointer.
600	* @param pMac Where to store the MAC address.
601	* @thread EMT
602	*/
603	static DECLCALLBACK(int) devINIPGetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
604	{
605	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
606	memcpy(pMac, pThis->MAC.au8, sizeof(RTMAC));
607	return VINF_SUCCESS;
608	}
609
610	/**
611	* Gets the new link state.
612	*
613	* @returns The current link state.
614	* @param pInterface Pointer to the interface structure containing the called function pointer.
615	* @thread EMT
616	*/
617	static DECLCALLBACK(PDMNETWORKLINKSTATE) devINIPGetLinkState(PPDMINETWORKCONFIG pInterface)
618	{
619	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
620	if (pThis->fLnkUp)
621	return PDMNETWORKLINKSTATE_UP;
622	return PDMNETWORKLINKSTATE_DOWN;
623	}
624
625
626	/**
627	* Sets the new link state.
628	*
629	* @returns VBox status code.
630	* @param pInterface Pointer to the interface structure containing the called function pointer.
631	* @param enmState The new link state
632	*/
633	static DECLCALLBACK(int) devINIPSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
634	{
635	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
636	bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
637
638	if (fNewUp != pThis->fLnkUp)
639	{
640	if (fNewUp)
641	{
642	LogFlowFunc(("Link is up\n"));
643	pThis->fLnkUp = true;
644	}
645	else
646	{
647	LogFlowFunc(("Link is down\n"));
648	pThis->fLnkUp = false;
649	}
650	if (pThis->pDrv)
651	pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, enmState);
652	}
653	return VINF_SUCCESS;
654	}
655
656	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
657
658	/**
659	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
660	*/
661	static DECLCALLBACK(void *) devINIPQueryInterface(PPDMIBASE pInterface,
662	const char *pszIID)
663	{
664	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, IBase);
665	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
666	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThis->INetworkDown);
667	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThis->INetworkConfig);
668	return NULL;
669	}
670
671	/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
672
673	/**
674	* Destruct a device instance.
675	*
676	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
677	* resources can be freed correctly.
678	*
679	* @returns VBox status.
680	* @param pDevIns The device instance data.
681	*/
682	static DECLCALLBACK(int) devINIPDestruct(PPDMDEVINS pDevIns)
683	{
684	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
685
686	LogFlow(("%s: pDevIns=%p\n", __FUNCTION__, pDevIns));
687	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
688
689	if (g_pDevINIPData != NULL)
690	{
691	#ifndef VBOX_WITH_NEW_LWIP
692	netif_set_down(&pThis->IntNetIF);
693	netif_remove(&pThis->IntNetIF);
694	pThis->fTermination = true;
695	tcpip_terminate();
696	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
697	lwip_sys_sem_free(pThis->LWIPTcpInitSem);
698	#else
699	vboxLwipCoreFinalize(devINIPTcpipFiniDone, pThis);
700	#endif
701	}
702
703	MMR3HeapFree(pThis->pszIP);
704	pThis->pszIP = NULL;
705	MMR3HeapFree(pThis->pszNetmask);
706	pThis->pszNetmask = NULL;
707	MMR3HeapFree(pThis->pszGateway);
708	pThis->pszGateway = NULL;
709
710	LogFlow(("%s: success\n", __FUNCTION__));
711	return VINF_SUCCESS;
712	}
713
714
715	/**
716	* @interface_method_impl{PDMDEVREG,pfnConstruct}
717	*/
718	static DECLCALLBACK(int) devINIPConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
719	{
720	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
721	int rc = VINF_SUCCESS;
722	#ifdef VBOX_WITH_NEW_LWIP
723	err_t errRc = ERR_OK;
724	#endif
725	LogFlow(("%s: pDevIns=%p iInstance=%d pCfg=%p\n", __FUNCTION__,
726	pDevIns, iInstance, pCfg));
727
728	Assert(iInstance == 0);
729	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
730
731	/*
732	* Validate the config.
733	*/
734	if (!CFGMR3AreValuesValid(pCfg, "MAC\0IP\0"
735	#ifdef VBOX_WITH_NEW_LWIP
736	"IPv6\0"
737	#endif
738	"Netmask\0Gateway\0"))
739	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
740	N_("Unknown Internal Networking IP configuration option"));
741
742	/*
743	* Init the static parts.
744	*/
745	pThis->pszIP = NULL;
746	pThis->pszNetmask = NULL;
747	pThis->pszGateway = NULL;
748	/* Pointer to device instance */
749	pThis->pDevIns = pDevIns;
750	/* IBase */
751	pThis->IBase.pfnQueryInterface = devINIPQueryInterface;
752	/* INetworkDown */
753	pThis->INetworkDown.pfnWaitReceiveAvail = devINIPNetworkDown_WaitInputAvail;
754	pThis->INetworkDown.pfnReceive = devINIPNetworkDown_Input;
755	pThis->INetworkDown.pfnXmitPending = devINIPNetworkDown_XmitPending;
756	/* INetworkConfig */
757	pThis->INetworkConfig.pfnGetMac = devINIPGetMac;
758	pThis->INetworkConfig.pfnGetLinkState = devINIPGetLinkState;
759	pThis->INetworkConfig.pfnSetLinkState = devINIPSetLinkState;
760
761	/*
762	* Get the configuration settings.
763	*/
764	rc = CFGMR3QueryBytes(pCfg, "MAC", &pThis->MAC, sizeof(pThis->MAC));
765	if (rc == VERR_CFGM_NOT_BYTES)
766	{
767	char szMAC[64];
768	rc = CFGMR3QueryString(pCfg, "MAC", &szMAC[0], sizeof(szMAC));
769	if (RT_SUCCESS(rc))
770	{
771	char *macStr = &szMAC[0];
772	char pMac = (char )&pThis->MAC;
773	for (uint32_t i = 0; i < 6; i++)
774	{
775	if ( !macStr \|\| !(macStr + 1)
776	\|\| macStr == ':' \|\| (macStr + 1) == ':')
777	return PDMDEV_SET_ERROR(pDevIns,
778	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
779	N_("Configuration error: Invalid \"MAC\" value"));
780	char c1 = *macStr++ - '0';
781	if (c1 > 9)
782	c1 -= 7;
783	char c2 = *macStr++ - '0';
784	if (c2 > 9)
785	c2 -= 7;
786	*pMac++ = ((c1 & 0x0f) << 4) \| (c2 & 0x0f);
787	if (i != 5 && *macStr == ':')
788	macStr++;
789	}
790	}
791	}
792	if (RT_FAILURE(rc))
793	return PDMDEV_SET_ERROR(pDevIns, rc,
794	N_("Configuration error: Failed to get the \"MAC\" value"));
795	rc = devINIPNetworkConfiguration(pDevIns, pThis, pCfg);
796	AssertLogRelRCReturn(rc, rc);
797
798	/*
799	* Attach driver and query the network connector interface.
800	*/
801	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Network Port");
802	if (RT_FAILURE(rc))
803	{
804	pThis->pDrvBase = NULL;
805	pThis->pDrv = NULL;
806	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Error attaching device below us"));
807	}
808	pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
809	AssertMsgReturn(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"), VERR_PDM_MISSING_INTERFACE_BELOW);
810
811
812	/*
813	* Set up global pointer to interface data.
814	*/
815	g_pDevINIPData = pThis;
816
817
818	/* link hack */
819	pThis->pLinkHack = g_pDevINILinkHack;
820
821	/*
822	* Initialize lwIP.
823	*/
824	#ifndef VBOX_WITH_NEW_LWIP
825	lwip_stats_init();
826	lwip_sys_init();
827	# if MEM_LIBC_MALLOC == 0
828	lwip_mem_init();
829	# endif
830	lwip_memp_init();
831	lwip_pbuf_init();
832	lwip_netif_init();
833	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPARPTimer, pThis,
834	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP ARP", &pThis->ARPTimer);
835	AssertRCReturn(rc, rc);
836	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPFastTimer, pThis,
837	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP fast TCP", &pThis->TCPFastTimer);
838	AssertRCReturn(rc, rc);
839	TMTimerSetMillies(pThis->TCPFastTimer, TCP_FAST_INTERVAL);
840	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPSlowTimer, pThis,
841	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP slow TCP", &pThis->TCPSlowTimer);
842	AssertRCReturn(rc, rc);
843	TMTimerSetMillies(pThis->TCPFastTimer, TCP_SLOW_INTERVAL);
844
845	pThis->LWIPTcpInitSem = lwip_sys_sem_new(0);
846
847	lwip_tcpip_init(devINIPTcpipInitDone, pThis);
848	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
849
850	#else /* VBOX_WITH_NEW_LWIP */
851	vboxLwipCoreInitialize(devINIPTcpipInitDone, pThis);
852	#endif
853
854	/* this rc could be updated in devINIPTcpInitDone thread */
855	AssertRCReturn(pThis->rcInitialization, pThis->rcInitialization);
856
857
858	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
859	return rc;
860	}
861
862
863	/**
864	* Query whether lwIP is initialized or not. Since there is only a single
865	* instance of this device ever for a VM, it can be a global function.
866	*
867	* @returns True if lwIP is initialized.
868	*/
869	bool DevINIPConfigured(void)
870	{
871	return g_pDevINIPData != NULL;
872	}
873
874
875	/**
876	* Internal network IP stack device registration record.
877	*/
878	const PDMDEVREG g_DeviceINIP =
879	{
880	/* u32Version */
881	PDM_DEVREG_VERSION,
882	/* szName */
883	"IntNetIP",
884	/* szRCMod/szR0Mod */
885	"",
886	"",
887	/* pszDescription */
888	"Internal Network IP stack device",
889	/* fFlags */
890	PDM_DEVREG_FLAGS_DEFAULT_BITS,
891	/* fClass. As this is used by the storage devices, it must come earlier. */
892	PDM_DEVREG_CLASS_VMM_DEV,
893	/* cMaxInstances */
894	1,
895	/* cbInstance */
896	sizeof(DEVINTNETIP),
897	/* pfnConstruct */
898	devINIPConstruct,
899	/* pfnDestruct */
900	devINIPDestruct,
901	/* pfnRelocate */
902	NULL,
903	/* pfnMemSetup */
904	NULL,
905	/* pfnPowerOn */
906	NULL,
907	/* pfnReset */
908	NULL,
909	/* pfnSuspend */
910	NULL,
911	/* pfnResume */
912	NULL,
913	/* pfnAttach */
914	NULL,
915	/* pfnDetach */
916	NULL,
917	/* pfnQueryInterface */
918	NULL,
919	/* pfnInitComplete */
920	NULL,
921	/* pfnPowerOff */
922	NULL,
923	/* pfnSoftReset */
924	NULL,
925	/* u32VersionEnd */
926	PDM_DEVREG_VERSION
927	};

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source: vbox/trunk/src/VBox/Devices/Network/DevINIP.cpp@ 51898

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