DevINIP.cpp@ 56743

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1	/* $Id: DevINIP.cpp 56292 2015-06-09 14:20:46Z vboxsync $ */
2	/** @file
3	* DevINIP - Internal Network IP stack device/service.
4	*/
5
6	/*
7	* Copyright (C) 2007-2015 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	#include "lwip/api.h"
37	#include "lwip/tcp_impl.h"
38	# if LWIP_IPV6
39	# include "ipv6/lwip/ethip6.h"
40	# endif
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/vmm/pdmdev.h>
48	#include <VBox/vmm/pdmnetifs.h>
49	#include <VBox/vmm/tm.h>
50	#include <iprt/assert.h>
51	#include <iprt/string.h>
52	#include <iprt/uuid.h>
53
54	#include "VBoxDD.h"
55	#include "VBoxLwipCore.h"
56
57	/*******************************************************************************
58	* Macros and Defines *
59	*******************************************************************************/
60
61	/** Maximum frame size this device can handle. */
62	#define DEVINIP_MAX_FRAME 1514
63
64
65	/*******************************************************************************
66	* Structures and Typedefs *
67	*******************************************************************************/
68
69	/**
70	* Internal Network IP stack device instance data.
71	*
72	* @implements PDMIBASE
73	* @implements PDMINETWORKDOWN
74	*/
75	typedef struct DEVINTNETIP
76	{
77	/** The base interface for LUN\#0. */
78	PDMIBASE IBase;
79	/** The network port this device provides (LUN\#0). */
80	PDMINETWORKDOWN INetworkDown;
81	/** The network configuration port this device provides (LUN\#0). */
82	PDMINETWORKCONFIG INetworkConfig;
83	/** The base interface of the network driver below us. */
84	PPDMIBASE pDrvBase;
85	/** The connector of the network driver below us. */
86	PPDMINETWORKUP pDrv;
87	/** Pointer to the device instance. */
88	PPDMDEVINSR3 pDevIns;
89	/** MAC address. */
90	RTMAC MAC;
91	/** Static IP address of the interface. */
92	char *pszIP;
93	/** Netmask of the interface. */
94	char *pszNetmask;
95	/** Gateway for the interface. */
96	char *pszGateway;
97	/** lwIP network interface description. */
98	struct netif IntNetIF;
99	/** lwIP ARP timer. */
100	PTMTIMERR3 ARPTimer;
101	/** lwIP TCP fast timer. */
102	PTMTIMERR3 TCPFastTimer;
103	/** lwIP TCP slow timer. */
104	PTMTIMERR3 TCPSlowTimer;
105	/** lwIP semaphore to coordinate TCPIP init/terminate. */
106	sys_sem_t LWIPTcpInitSem;
107	/** hack: get linking right. remove this eventually, once the device
108	* provides a proper interface to all IP stack functions. */
109	const void *pLinkHack;
110	/** Flag whether the link is up. */
111	bool fLnkUp;
112	/**
113	* In callback we're getting status of interface adding operation (TCPIP thread),
114	* but we need inform constructing routine whether it was success or not(EMT thread).
115	*/
116	int rcInitialization;
117	} DEVINTNETIP, *PDEVINTNETIP;
118
119
120	/*******************************************************************************
121	* Global Variables *
122	*******************************************************************************/
123
124	/**
125	* Pointer to the (only) instance data in this device.
126	*/
127	static PDEVINTNETIP g_pDevINIPData = NULL;
128
129	/*
130	* really ugly hack to avoid linking problems on unix style platforms
131	* using .a libraries for now.
132	*/
133	static const PFNRT g_pDevINILinkHack[] =
134	{
135	(PFNRT)lwip_socket,
136	(PFNRT)lwip_close,
137	(PFNRT)lwip_setsockopt,
138	(PFNRT)lwip_recv,
139	(PFNRT)lwip_send,
140	(PFNRT)lwip_select
141	};
142
143
144	/*******************************************************************************
145	* Internal Functions *
146	*******************************************************************************/
147	static DECLCALLBACK(err_t) devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr);
148	static DECLCALLBACK(err_t) devINIPOutputRaw(struct netif netif, struct pbuf p);
149	static DECLCALLBACK(err_t) devINIPInterface(struct netif *netif);
150
151
152	/**
153	* Output a TCP/IP packet on the interface. Uses the generic lwIP ARP
154	* code to resolve the address and call the link-level packet function.
155	*
156	* @returns lwIP error code
157	* @param netif Interface on which to send IP packet.
158	* @param p Packet data.
159	* @param ipaddr Destination IP address.
160	*/
161	static DECLCALLBACK(err_t) devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr)
162	{
163	err_t lrc;
164	LogFlow(("%s: netif=%p p=%p ipaddr=%#04x\n", __FUNCTION__, netif, p,
165	ipaddr->addr));
166
167	lrc = lwip_etharp_output(netif, p, ipaddr);
168
169	LogFlow(("%s: return %d\n", __FUNCTION__, lrc));
170	return lrc;
171	}
172
173	/**
174	* Output a raw packet on the interface.
175	*
176	* @returns lwIP error code
177	* @param netif Interface on which to send frame.
178	* @param p Frame data.
179	*/
180	static DECLCALLBACK(err_t) devINIPOutputRaw(struct netif netif, struct pbuf p)
181	{
182	int rc = VINF_SUCCESS;
183
184	LogFlow(("%s: netif=%p p=%p\n", __FUNCTION__, netif, p));
185	Assert(g_pDevINIPData);
186	Assert(g_pDevINIPData->pDrv);
187
188	/* Silently ignore packets being sent while lwIP isn't set up. */
189	if (g_pDevINIPData)
190	{
191	PPDMSCATTERGATHER pSgBuf;
192
193	rc = g_pDevINIPData->pDrv->pfnBeginXmit(g_pDevINIPData->pDrv, true /* fOnWorkerThread */);
194	if (RT_FAILURE(rc))
195	return ERR_IF;
196
197	rc = g_pDevINIPData->pDrv->pfnAllocBuf(g_pDevINIPData->pDrv, DEVINIP_MAX_FRAME, NULL /pGso/, &pSgBuf);
198	if (RT_SUCCESS(rc))
199	{
200	#if ETH_PAD_SIZE
201	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
202	#endif
203
204	uint8_t pbBuf = pSgBuf ? (uint8_t )pSgBuf->aSegs[0].pvSeg : NULL;
205	size_t cbBuf = 0;
206	for (struct pbuf *q = p; q != NULL; q = q->next)
207	{
208	if (cbBuf + q->len <= DEVINIP_MAX_FRAME)
209	{
210	if (RT_LIKELY(pbBuf))
211	{
212	memcpy(pbBuf, q->payload, q->len);
213	pbBuf += q->len;
214	}
215	cbBuf += q->len;
216	}
217	else
218	{
219	LogRel(("INIP: exceeded frame size\n"));
220	break;
221	}
222	}
223	if (cbBuf)
224	{
225	pSgBuf->cbUsed = cbBuf;
226	rc = g_pDevINIPData->pDrv->pfnSendBuf(g_pDevINIPData->pDrv, pSgBuf, true /* fOnWorkerThread */);
227	}
228	else
229	rc = g_pDevINIPData->pDrv->pfnFreeBuf(g_pDevINIPData->pDrv, pSgBuf);
230
231	#if ETH_PAD_SIZE
232	lwip_pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
233	#endif
234	}
235
236	g_pDevINIPData->pDrv->pfnEndXmit(g_pDevINIPData->pDrv);
237	}
238
239	err_t lrc = ERR_OK;
240	if (RT_FAILURE(rc))
241	lrc = ERR_IF;
242	LogFlow(("%s: return %d (vbox: %Rrc)\n", __FUNCTION__, rc, lrc));
243	return lrc;
244	}
245
246	/**
247	* Implements the ethernet interface backend initialization for lwIP.
248	*
249	* @returns lwIP error code
250	* @param netif Interface to configure.
251	*/
252	static DECLCALLBACK(err_t) devINIPInterface(struct netif *netif)
253	{
254	LogFlow(("%s: netif=%p\n", __FUNCTION__, netif));
255	Assert(g_pDevINIPData != NULL);
256	netif->state = g_pDevINIPData;
257	netif->hwaddr_len = sizeof(g_pDevINIPData->MAC);
258	memcpy(netif->hwaddr, &g_pDevINIPData->MAC, sizeof(g_pDevINIPData->MAC));
259	netif->mtu = DEVINIP_MAX_FRAME;
260	netif->flags = NETIF_FLAG_BROADCAST;
261	netif->flags \|= NETIF_FLAG_ETHARP;
262	netif->flags \|= NETIF_FLAG_ETHERNET;
263
264	#if LWIP_IPV6
265	netif_create_ip6_linklocal_address(netif, 0);
266	netif_ip6_addr_set_state(netif, 0, IP6_ADDR_VALID);
267	netif->output_ip6 = ethip6_output;
268	netif->ip6_autoconfig_enabled=1;
269	LogFunc(("netif: ipv6:%RTnaipv6\n", &netif->ip6_addr[0].addr[0]));
270	#endif
271
272	netif->output = lwip_etharp_output;
273	netif->linkoutput = devINIPOutputRaw;
274
275	LogFlow(("%s: success\n", __FUNCTION__));
276	return ERR_OK;
277	}
278
279	/**
280	* Parses CFGM parameters related to network connection
281	*/
282	static DECLCALLBACK(int) devINIPNetworkConfiguration(PPDMDEVINS pDevIns, PDEVINTNETIP pThis, PCFGMNODE pCfg)
283	{
284	int rc = VINF_SUCCESS;
285	rc = CFGMR3QueryStringAlloc(pCfg, "IP", &pThis->pszIP);
286	if (RT_FAILURE(rc))
287	{
288	PDMDEV_SET_ERROR(pDevIns, rc,
289	N_("Configuration error: Failed to get the \"IP\" value"));
290	/* @todo: perhaps we should panic if IPv4 address isn't specify, with assumtion that
291	* ISCSI target specified in IPv6 form.
292	*/
293	return rc;
294	}
295
296	rc = CFGMR3QueryStringAlloc(pCfg, "Netmask", &pThis->pszNetmask);
297	if (RT_FAILURE(rc))
298	{
299	PDMDEV_SET_ERROR(pDevIns, rc,
300	N_("Configuration error: Failed to get the \"Netmask\" value"));
301	return rc;
302	}
303	rc = CFGMR3QueryStringAlloc(pCfg, "Gateway", &pThis->pszGateway);
304	if ( RT_FAILURE(rc)
305	&& rc != VERR_CFGM_VALUE_NOT_FOUND)
306	{
307	PDMDEV_SET_ERROR(pDevIns, rc,
308	N_("Configuration error: Failed to get the \"Gateway\" value"));
309	return rc;
310	}
311	return VINF_SUCCESS;
312	}
313
314	/**
315	* Wait until data can be received.
316	*
317	* @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
318	* @param pInterface PDM network port interface pointer.
319	* @param cMillies Number of milliseconds to wait. 0 means return immediately.
320	*/
321	static DECLCALLBACK(int) devINIPNetworkDown_WaitInputAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
322	{
323	LogFlow(("%s: pInterface=%p\n", __FUNCTION__, pInterface));
324	LogFlow(("%s: return VINF_SUCCESS\n", __FUNCTION__));
325	return VINF_SUCCESS;
326	}
327
328	/**
329	* Receive data and pass it to lwIP for processing.
330	*
331	* @returns VBox status code
332	* @param pInterface PDM network port interface pointer.
333	* @param pvBuf Pointer to frame data.
334	* @param cb Frame size.
335	*/
336	static DECLCALLBACK(int) devINIPNetworkDown_Input(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
337	{
338	const uint8_t pbBuf = (const uint8_t )pvBuf;
339	size_t len = cb;
340	const struct eth_hdr *ethhdr;
341	struct pbuf p, q;
342	int rc = VINF_SUCCESS;
343
344	LogFlow(("%s: pInterface=%p pvBuf=%p cb=%lu\n", __FUNCTION__, pInterface, pvBuf, cb));
345	Assert(g_pDevINIPData);
346	Assert(g_pDevINIPData->pDrv);
347
348	/* Silently ignore packets being received while lwIP isn't set up. */
349	if (!g_pDevINIPData)
350	{
351	LogFlow(("%s: return %Rrc (no global)\n", __FUNCTION__, rc));
352	return VINF_SUCCESS;
353	}
354
355	#if ETH_PAD_SIZE
356	len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
357	#endif
358
359	/* We allocate a pbuf chain of pbufs from the pool. */
360	p = lwip_pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
361	if (p != NULL)
362	{
363	#if ETH_PAD_SIZE
364	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
365	#endif
366
367	for (q = p; q != NULL; q = q->next)
368	{
369	/* Fill the buffers, and clean out unused buffer space. */
370	memcpy(q->payload, pbBuf, RT_MIN(cb, q->len));
371	pbBuf += RT_MIN(cb, q->len);
372	if (q->len > cb)
373	memset(((uint8_t *)q->payload) + cb, '\0', q->len - cb);
374	cb -= RT_MIN(cb, q->len);
375	}
376
377	ethhdr = (const struct eth_hdr *)p->payload;
378	struct netif *iface = &g_pDevINIPData->IntNetIF;
379
380	/* We've setup flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET
381	so this should be thread-safe. */
382	tcpip_input(p,iface);
383	}
384
385	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
386	return rc;
387	}
388
389	/**
390	* @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
391	*/
392	static DECLCALLBACK(void) devINIPNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
393	{
394	NOREF(pInterface);
395	}
396
397
398	/**
399	* Signals the end of lwIP TCPIP initialization.
400	*
401	* @note: TCPIP thread, corresponding EMT waiting on semaphore.
402	* @param arg opaque argument, here the pointer to the PDEVINTNETIP.
403	*/
404	static DECLCALLBACK(void) devINIPTcpipInitDone(void *arg)
405	{
406	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
407	AssertPtrReturnVoid(arg);
408
409	pThis->rcInitialization = VINF_SUCCESS;
410	{
411	struct netif *ret;
412	struct ip_addr ipaddr, netmask, gw;
413	struct in_addr ip;
414
415	if (!inet_aton(pThis->pszIP, &ip))
416	{
417	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
418	PDMDEV_SET_ERROR(pThis->pDevIns,
419	pThis->rcInitialization,
420	N_("Configuration error: Invalid \"IP\" value"));
421	goto done;
422	}
423	memcpy(&ipaddr, &ip, sizeof(ipaddr));
424
425	if (!inet_aton(pThis->pszNetmask, &ip))
426	{
427	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
428	PDMDEV_SET_ERROR(pThis->pDevIns,
429	pThis->rcInitialization,
430	N_("Configuration error: Invalid \"Netmask\" value"));
431	goto done;
432	}
433	memcpy(&netmask, &ip, sizeof(netmask));
434
435	if (pThis->pszGateway)
436	{
437	if (!inet_aton(pThis->pszGateway, &ip))
438	{
439	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
440	PDMDEV_SET_ERROR(pThis->pDevIns,
441	pThis->rcInitialization,
442	N_("Configuration error: Invalid \"Gateway\" value"));
443	goto done;
444	}
445
446	}
447	else
448	{
449	inet_aton(pThis->pszIP, &ip);
450	}
451	memcpy(&gw, &ip, sizeof(gw));
452
453	pThis->IntNetIF.name[0] = 'I';
454	pThis->IntNetIF.name[1] = 'N';
455
456	ret = netif_add(&pThis->IntNetIF, &ipaddr, &netmask, &gw, NULL,
457	devINIPInterface, lwip_tcpip_input);
458
459	if (!ret)
460	{
461
462	pThis->rcInitialization = VERR_NET_NO_NETWORK;
463	PDMDEV_SET_ERROR(pThis->pDevIns,
464	pThis->rcInitialization,
465	N_("netif_add failed"));
466	goto done;
467	}
468
469	lwip_netif_set_default(&pThis->IntNetIF);
470	lwip_netif_set_up(&pThis->IntNetIF);
471	}
472	done:
473	return;
474	}
475
476
477	/**
478	* This callback is for finitializing our activity on TCPIP thread.
479	* XXX: We do it only for new LWIP, old LWIP will stay broken for now.
480	*/
481	static DECLCALLBACK(void) devINIPTcpipFiniDone(void *arg)
482	{
483	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
484	AssertPtrReturnVoid(arg);
485
486	netif_set_link_down(&pThis->IntNetIF);
487	netif_set_down(&pThis->IntNetIF);
488	netif_remove(&pThis->IntNetIF);
489	}
490
491
492	/**
493	* Gets the current Media Access Control (MAC) address.
494	*
495	* @returns VBox status code.
496	* @param pInterface Pointer to the interface structure containing the called function pointer.
497	* @param pMac Where to store the MAC address.
498	* @thread EMT
499	*/
500	static DECLCALLBACK(int) devINIPGetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
501	{
502	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
503	memcpy(pMac, pThis->MAC.au8, sizeof(RTMAC));
504	return VINF_SUCCESS;
505	}
506
507	/**
508	* Gets the new link state.
509	*
510	* @returns The current link state.
511	* @param pInterface Pointer to the interface structure containing the called function pointer.
512	* @thread EMT
513	*/
514	static DECLCALLBACK(PDMNETWORKLINKSTATE) devINIPGetLinkState(PPDMINETWORKCONFIG pInterface)
515	{
516	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
517	if (pThis->fLnkUp)
518	return PDMNETWORKLINKSTATE_UP;
519	return PDMNETWORKLINKSTATE_DOWN;
520	}
521
522
523	/**
524	* Sets the new link state.
525	*
526	* @returns VBox status code.
527	* @param pInterface Pointer to the interface structure containing the called function pointer.
528	* @param enmState The new link state
529	*/
530	static DECLCALLBACK(int) devINIPSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
531	{
532	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
533	bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
534
535	if (fNewUp != pThis->fLnkUp)
536	{
537	if (fNewUp)
538	{
539	LogFlowFunc(("Link is up\n"));
540	pThis->fLnkUp = true;
541	}
542	else
543	{
544	LogFlowFunc(("Link is down\n"));
545	pThis->fLnkUp = false;
546	}
547	if (pThis->pDrv)
548	pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, enmState);
549	}
550	return VINF_SUCCESS;
551	}
552
553	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
554
555	/**
556	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
557	*/
558	static DECLCALLBACK(void *) devINIPQueryInterface(PPDMIBASE pInterface,
559	const char *pszIID)
560	{
561	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, IBase);
562	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
563	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThis->INetworkDown);
564	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThis->INetworkConfig);
565	return NULL;
566	}
567
568	/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
569
570	/**
571	* Destruct a device instance.
572	*
573	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
574	* resources can be freed correctly.
575	*
576	* @returns VBox status.
577	* @param pDevIns The device instance data.
578	*/
579	static DECLCALLBACK(int) devINIPDestruct(PPDMDEVINS pDevIns)
580	{
581	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
582
583	LogFlow(("%s: pDevIns=%p\n", __FUNCTION__, pDevIns));
584	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
585
586	if (g_pDevINIPData != NULL)
587	vboxLwipCoreFinalize(devINIPTcpipFiniDone, pThis);
588
589	MMR3HeapFree(pThis->pszIP);
590	pThis->pszIP = NULL;
591	MMR3HeapFree(pThis->pszNetmask);
592	pThis->pszNetmask = NULL;
593	MMR3HeapFree(pThis->pszGateway);
594	pThis->pszGateway = NULL;
595
596	LogFlow(("%s: success\n", __FUNCTION__));
597	return VINF_SUCCESS;
598	}
599
600
601	/**
602	* @interface_method_impl{PDMDEVREG,pfnConstruct}
603	*/
604	static DECLCALLBACK(int) devINIPConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
605	{
606	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
607	int rc = VINF_SUCCESS;
608	err_t errRc = ERR_OK;
609
610	LogFlow(("%s: pDevIns=%p iInstance=%d pCfg=%p\n", __FUNCTION__,
611	pDevIns, iInstance, pCfg));
612
613	Assert(iInstance == 0);
614	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
615
616	/*
617	* Validate the config.
618	*/
619	if (!CFGMR3AreValuesValid(pCfg, "MAC\0IP\0"
620	"IPv6\0"
621	"Netmask\0Gateway\0"))
622	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
623	N_("Unknown Internal Networking IP configuration option"));
624
625	/*
626	* Init the static parts.
627	*/
628	pThis->pszIP = NULL;
629	pThis->pszNetmask = NULL;
630	pThis->pszGateway = NULL;
631	/* Pointer to device instance */
632	pThis->pDevIns = pDevIns;
633	/* IBase */
634	pThis->IBase.pfnQueryInterface = devINIPQueryInterface;
635	/* INetworkDown */
636	pThis->INetworkDown.pfnWaitReceiveAvail = devINIPNetworkDown_WaitInputAvail;
637	pThis->INetworkDown.pfnReceive = devINIPNetworkDown_Input;
638	pThis->INetworkDown.pfnXmitPending = devINIPNetworkDown_XmitPending;
639	/* INetworkConfig */
640	pThis->INetworkConfig.pfnGetMac = devINIPGetMac;
641	pThis->INetworkConfig.pfnGetLinkState = devINIPGetLinkState;
642	pThis->INetworkConfig.pfnSetLinkState = devINIPSetLinkState;
643
644	/*
645	* Get the configuration settings.
646	*/
647	rc = CFGMR3QueryBytes(pCfg, "MAC", &pThis->MAC, sizeof(pThis->MAC));
648	if (rc == VERR_CFGM_NOT_BYTES)
649	{
650	char szMAC[64];
651	rc = CFGMR3QueryString(pCfg, "MAC", &szMAC[0], sizeof(szMAC));
652	if (RT_SUCCESS(rc))
653	{
654	char *macStr = &szMAC[0];
655	char pMac = (char )&pThis->MAC;
656	for (uint32_t i = 0; i < 6; i++)
657	{
658	if ( !macStr \|\| !(macStr + 1)
659	\|\| macStr == ':' \|\| (macStr + 1) == ':')
660	return PDMDEV_SET_ERROR(pDevIns,
661	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
662	N_("Configuration error: Invalid \"MAC\" value"));
663	char c1 = *macStr++ - '0';
664	if (c1 > 9)
665	c1 -= 7;
666	char c2 = *macStr++ - '0';
667	if (c2 > 9)
668	c2 -= 7;
669	*pMac++ = ((c1 & 0x0f) << 4) \| (c2 & 0x0f);
670	if (i != 5 && *macStr == ':')
671	macStr++;
672	}
673	}
674	}
675	if (RT_FAILURE(rc))
676	return PDMDEV_SET_ERROR(pDevIns, rc,
677	N_("Configuration error: Failed to get the \"MAC\" value"));
678	rc = devINIPNetworkConfiguration(pDevIns, pThis, pCfg);
679	AssertLogRelRCReturn(rc, rc);
680
681	/*
682	* Attach driver and query the network connector interface.
683	*/
684	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Network Port");
685	if (RT_FAILURE(rc))
686	{
687	pThis->pDrvBase = NULL;
688	pThis->pDrv = NULL;
689	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Error attaching device below us"));
690	}
691	pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
692	AssertMsgReturn(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"), VERR_PDM_MISSING_INTERFACE_BELOW);
693
694
695	/*
696	* Set up global pointer to interface data.
697	*/
698	g_pDevINIPData = pThis;
699
700
701	/* link hack */
702	pThis->pLinkHack = g_pDevINILinkHack;
703
704	/*
705	* Initialize lwIP.
706	*/
707	vboxLwipCoreInitialize(devINIPTcpipInitDone, pThis);
708
709	/* this rc could be updated in devINIPTcpInitDone thread */
710	AssertRCReturn(pThis->rcInitialization, pThis->rcInitialization);
711
712
713	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
714	return rc;
715	}
716
717
718	/**
719	* Query whether lwIP is initialized or not. Since there is only a single
720	* instance of this device ever for a VM, it can be a global function.
721	*
722	* @returns True if lwIP is initialized.
723	*/
724	bool DevINIPConfigured(void)
725	{
726	return g_pDevINIPData != NULL;
727	}
728
729
730	/**
731	* Internal network IP stack device registration record.
732	*/
733	const PDMDEVREG g_DeviceINIP =
734	{
735	/* u32Version */
736	PDM_DEVREG_VERSION,
737	/* szName */
738	"IntNetIP",
739	/* szRCMod/szR0Mod */
740	"",
741	"",
742	/* pszDescription */
743	"Internal Network IP stack device",
744	/* fFlags */
745	PDM_DEVREG_FLAGS_DEFAULT_BITS,
746	/* fClass. As this is used by the storage devices, it must come earlier. */
747	PDM_DEVREG_CLASS_VMM_DEV,
748	/* cMaxInstances */
749	1,
750	/* cbInstance */
751	sizeof(DEVINTNETIP),
752	/* pfnConstruct */
753	devINIPConstruct,
754	/* pfnDestruct */
755	devINIPDestruct,
756	/* pfnRelocate */
757	NULL,
758	/* pfnMemSetup */
759	NULL,
760	/* pfnPowerOn */
761	NULL,
762	/* pfnReset */
763	NULL,
764	/* pfnSuspend */
765	NULL,
766	/* pfnResume */
767	NULL,
768	/* pfnAttach */
769	NULL,
770	/* pfnDetach */
771	NULL,
772	/* pfnQueryInterface */
773	NULL,
774	/* pfnInitComplete */
775	NULL,
776	/* pfnPowerOff */
777	NULL,
778	/* pfnSoftReset */
779	NULL,
780	/* u32VersionEnd */
781	PDM_DEVREG_VERSION
782	};

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source: vbox/trunk/src/VBox/Devices/Network/DevINIP.cpp@ 56743

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