DevINIP.cpp@ 61009

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1	/* $Id: DevINIP.cpp 58170 2015-10-12 09:27:14Z 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	/*********************************************************************************************************************************
59	* Macros and Defines *
60	*********************************************************************************************************************************/
61
62	/** Maximum frame size this device can handle. */
63	#define DEVINIP_MAX_FRAME 1514
64
65
66	/*********************************************************************************************************************************
67	* Structures and Typedefs *
68	*********************************************************************************************************************************/
69
70	/**
71	* Internal Network IP stack device instance data.
72	*
73	* @implements PDMIBASE
74	* @implements PDMINETWORKDOWN
75	*/
76	typedef struct DEVINTNETIP
77	{
78	/** The base interface for LUN\#0. */
79	PDMIBASE IBase;
80	/** The network port this device provides (LUN\#0). */
81	PDMINETWORKDOWN INetworkDown;
82	/** The network configuration port this device provides (LUN\#0). */
83	PDMINETWORKCONFIG INetworkConfig;
84	/** The base interface of the network driver below us. */
85	PPDMIBASE pDrvBase;
86	/** The connector of the network driver below us. */
87	PPDMINETWORKUP pDrv;
88	/** Pointer to the device instance. */
89	PPDMDEVINSR3 pDevIns;
90	/** MAC address. */
91	RTMAC MAC;
92	/** Static IP address of the interface. */
93	char *pszIP;
94	/** Netmask of the interface. */
95	char *pszNetmask;
96	/** Gateway for the interface. */
97	char *pszGateway;
98	/** lwIP network interface description. */
99	struct netif IntNetIF;
100	/** lwIP ARP timer. */
101	PTMTIMERR3 ARPTimer;
102	/** lwIP TCP fast timer. */
103	PTMTIMERR3 TCPFastTimer;
104	/** lwIP TCP slow timer. */
105	PTMTIMERR3 TCPSlowTimer;
106	/** lwIP semaphore to coordinate TCPIP init/terminate. */
107	sys_sem_t LWIPTcpInitSem;
108	/** hack: get linking right. remove this eventually, once the device
109	* provides a proper interface to all IP stack functions. */
110	const void *pLinkHack;
111	/** Flag whether the link is up. */
112	bool fLnkUp;
113	/**
114	* In callback we're getting status of interface adding operation (TCPIP thread),
115	* but we need inform constructing routine whether it was success or not(EMT thread).
116	*/
117	int rcInitialization;
118	} DEVINTNETIP, *PDEVINTNETIP;
119
120
121	/*********************************************************************************************************************************
122	* Global Variables *
123	*********************************************************************************************************************************/
124
125	/**
126	* Pointer to the (only) instance data in this device.
127	*/
128	static PDEVINTNETIP g_pDevINIPData = NULL;
129
130	/*
131	* really ugly hack to avoid linking problems on unix style platforms
132	* using .a libraries for now.
133	*/
134	static const PFNRT g_pDevINILinkHack[] =
135	{
136	(PFNRT)lwip_socket,
137	(PFNRT)lwip_close,
138	(PFNRT)lwip_setsockopt,
139	(PFNRT)lwip_recv,
140	(PFNRT)lwip_send,
141	(PFNRT)lwip_select
142	};
143
144
145	/*********************************************************************************************************************************
146	* Internal Functions *
147	*********************************************************************************************************************************/
148	static err_t devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr);
149	static err_t devINIPOutputRaw(struct netif netif, struct pbuf p);
150	static err_t devINIPInterface(struct netif *netif);
151
152
153	/**
154	* Output a TCP/IP packet on the interface. Uses the generic lwIP ARP
155	* code to resolve the address and call the link-level packet function.
156	*
157	* @returns lwIP error code
158	* @param netif Interface on which to send IP packet.
159	* @param p Packet data.
160	* @param ipaddr Destination IP address.
161	*/
162	static err_t devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr)
163	{
164	err_t lrc;
165	LogFlow(("%s: netif=%p p=%p ipaddr=%#04x\n", __FUNCTION__, netif, p,
166	ipaddr->addr));
167
168	lrc = lwip_etharp_output(netif, p, ipaddr);
169
170	LogFlow(("%s: return %d\n", __FUNCTION__, lrc));
171	return lrc;
172	}
173
174	/**
175	* Output a raw packet on the interface.
176	*
177	* @returns lwIP error code
178	* @param netif Interface on which to send frame.
179	* @param p Frame data.
180	*/
181	static err_t devINIPOutputRaw(struct netif netif, struct pbuf p)
182	{
183	int rc = VINF_SUCCESS;
184
185	LogFlow(("%s: netif=%p p=%p\n", __FUNCTION__, netif, p));
186	Assert(g_pDevINIPData);
187	Assert(g_pDevINIPData->pDrv);
188
189	/* Silently ignore packets being sent while lwIP isn't set up. */
190	if (g_pDevINIPData)
191	{
192	PPDMSCATTERGATHER pSgBuf;
193
194	rc = g_pDevINIPData->pDrv->pfnBeginXmit(g_pDevINIPData->pDrv, true /* fOnWorkerThread */);
195	if (RT_FAILURE(rc))
196	return ERR_IF;
197
198	rc = g_pDevINIPData->pDrv->pfnAllocBuf(g_pDevINIPData->pDrv, DEVINIP_MAX_FRAME, NULL /pGso/, &pSgBuf);
199	if (RT_SUCCESS(rc))
200	{
201	#if ETH_PAD_SIZE
202	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
203	#endif
204
205	uint8_t pbBuf = pSgBuf ? (uint8_t )pSgBuf->aSegs[0].pvSeg : NULL;
206	size_t cbBuf = 0;
207	for (struct pbuf *q = p; q != NULL; q = q->next)
208	{
209	if (cbBuf + q->len <= DEVINIP_MAX_FRAME)
210	{
211	if (RT_LIKELY(pbBuf))
212	{
213	memcpy(pbBuf, q->payload, q->len);
214	pbBuf += q->len;
215	}
216	cbBuf += q->len;
217	}
218	else
219	{
220	LogRel(("INIP: exceeded frame size\n"));
221	break;
222	}
223	}
224	if (cbBuf)
225	{
226	pSgBuf->cbUsed = cbBuf;
227	rc = g_pDevINIPData->pDrv->pfnSendBuf(g_pDevINIPData->pDrv, pSgBuf, true /* fOnWorkerThread */);
228	}
229	else
230	rc = g_pDevINIPData->pDrv->pfnFreeBuf(g_pDevINIPData->pDrv, pSgBuf);
231
232	#if ETH_PAD_SIZE
233	lwip_pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
234	#endif
235	}
236
237	g_pDevINIPData->pDrv->pfnEndXmit(g_pDevINIPData->pDrv);
238	}
239
240	err_t lrc = ERR_OK;
241	if (RT_FAILURE(rc))
242	lrc = ERR_IF;
243	LogFlow(("%s: return %d (vbox: %Rrc)\n", __FUNCTION__, rc, lrc));
244	return lrc;
245	}
246
247	/**
248	* Implements the ethernet interface backend initialization for lwIP.
249	*
250	* @returns lwIP error code
251	* @param netif Interface to configure.
252	*/
253	static err_t devINIPInterface(struct netif *netif)
254	{
255	LogFlow(("%s: netif=%p\n", __FUNCTION__, netif));
256	Assert(g_pDevINIPData != NULL);
257	netif->state = g_pDevINIPData;
258	netif->hwaddr_len = sizeof(g_pDevINIPData->MAC);
259	memcpy(netif->hwaddr, &g_pDevINIPData->MAC, sizeof(g_pDevINIPData->MAC));
260	netif->mtu = DEVINIP_MAX_FRAME;
261	netif->flags = NETIF_FLAG_BROADCAST;
262	netif->flags \|= NETIF_FLAG_ETHARP;
263	netif->flags \|= NETIF_FLAG_ETHERNET;
264
265	#if LWIP_IPV6
266	netif_create_ip6_linklocal_address(netif, 0);
267	netif_ip6_addr_set_state(netif, 0, IP6_ADDR_VALID);
268	netif->output_ip6 = ethip6_output;
269	netif->ip6_autoconfig_enabled=1;
270	LogFunc(("netif: ipv6:%RTnaipv6\n", &netif->ip6_addr[0].addr[0]));
271	#endif
272
273	netif->output = lwip_etharp_output;
274	netif->linkoutput = devINIPOutputRaw;
275
276	LogFlow(("%s: success\n", __FUNCTION__));
277	return ERR_OK;
278	}
279
280	/**
281	* Parses CFGM parameters related to network connection
282	*/
283	static DECLCALLBACK(int) devINIPNetworkConfiguration(PPDMDEVINS pDevIns, PDEVINTNETIP pThis, PCFGMNODE pCfg)
284	{
285	int rc = VINF_SUCCESS;
286	rc = CFGMR3QueryStringAlloc(pCfg, "IP", &pThis->pszIP);
287	if (RT_FAILURE(rc))
288	{
289	PDMDEV_SET_ERROR(pDevIns, rc,
290	N_("Configuration error: Failed to get the \"IP\" value"));
291	/* @todo: perhaps we should panic if IPv4 address isn't specify, with assumtion that
292	* ISCSI target specified in IPv6 form.
293	*/
294	return rc;
295	}
296
297	rc = CFGMR3QueryStringAlloc(pCfg, "Netmask", &pThis->pszNetmask);
298	if (RT_FAILURE(rc))
299	{
300	PDMDEV_SET_ERROR(pDevIns, rc,
301	N_("Configuration error: Failed to get the \"Netmask\" value"));
302	return rc;
303	}
304	rc = CFGMR3QueryStringAlloc(pCfg, "Gateway", &pThis->pszGateway);
305	if ( RT_FAILURE(rc)
306	&& rc != VERR_CFGM_VALUE_NOT_FOUND)
307	{
308	PDMDEV_SET_ERROR(pDevIns, rc,
309	N_("Configuration error: Failed to get the \"Gateway\" value"));
310	return rc;
311	}
312	return VINF_SUCCESS;
313	}
314
315	/**
316	* Wait until data can be received.
317	*
318	* @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
319	* @param pInterface PDM network port interface pointer.
320	* @param cMillies Number of milliseconds to wait. 0 means return immediately.
321	*/
322	static DECLCALLBACK(int) devINIPNetworkDown_WaitInputAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
323	{
324	LogFlow(("%s: pInterface=%p\n", __FUNCTION__, pInterface));
325	LogFlow(("%s: return VINF_SUCCESS\n", __FUNCTION__));
326	return VINF_SUCCESS;
327	}
328
329	/**
330	* Receive data and pass it to lwIP for processing.
331	*
332	* @returns VBox status code
333	* @param pInterface PDM network port interface pointer.
334	* @param pvBuf Pointer to frame data.
335	* @param cb Frame size.
336	*/
337	static DECLCALLBACK(int) devINIPNetworkDown_Input(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
338	{
339	const uint8_t pbBuf = (const uint8_t )pvBuf;
340	size_t len = cb;
341	const struct eth_hdr *ethhdr;
342	struct pbuf p, q;
343	int rc = VINF_SUCCESS;
344
345	LogFlow(("%s: pInterface=%p pvBuf=%p cb=%lu\n", __FUNCTION__, pInterface, pvBuf, cb));
346	Assert(g_pDevINIPData);
347	Assert(g_pDevINIPData->pDrv);
348
349	/* Silently ignore packets being received while lwIP isn't set up. */
350	if (!g_pDevINIPData)
351	{
352	LogFlow(("%s: return %Rrc (no global)\n", __FUNCTION__, rc));
353	return VINF_SUCCESS;
354	}
355
356	#if ETH_PAD_SIZE
357	len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
358	#endif
359
360	/* We allocate a pbuf chain of pbufs from the pool. */
361	p = lwip_pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
362	if (p != NULL)
363	{
364	#if ETH_PAD_SIZE
365	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
366	#endif
367
368	for (q = p; q != NULL; q = q->next)
369	{
370	/* Fill the buffers, and clean out unused buffer space. */
371	memcpy(q->payload, pbBuf, RT_MIN(cb, q->len));
372	pbBuf += RT_MIN(cb, q->len);
373	if (q->len > cb)
374	memset(((uint8_t *)q->payload) + cb, '\0', q->len - cb);
375	cb -= RT_MIN(cb, q->len);
376	}
377
378	ethhdr = (const struct eth_hdr *)p->payload;
379	struct netif *iface = &g_pDevINIPData->IntNetIF;
380
381	/* We've setup flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET
382	so this should be thread-safe. */
383	tcpip_input(p,iface);
384	}
385
386	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
387	return rc;
388	}
389
390	/**
391	* @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
392	*/
393	static DECLCALLBACK(void) devINIPNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
394	{
395	NOREF(pInterface);
396	}
397
398
399	/**
400	* Signals the end of lwIP TCPIP initialization.
401	*
402	* @note: TCPIP thread, corresponding EMT waiting on semaphore.
403	* @param arg opaque argument, here the pointer to the PDEVINTNETIP.
404	*/
405	static DECLCALLBACK(void) devINIPTcpipInitDone(void *arg)
406	{
407	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
408	AssertPtrReturnVoid(arg);
409
410	pThis->rcInitialization = VINF_SUCCESS;
411	{
412	struct netif *ret;
413	struct ip_addr ipaddr, netmask, gw;
414	struct in_addr ip;
415
416	if (!inet_aton(pThis->pszIP, &ip))
417	{
418	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
419	PDMDEV_SET_ERROR(pThis->pDevIns,
420	pThis->rcInitialization,
421	N_("Configuration error: Invalid \"IP\" value"));
422	goto done;
423	}
424	memcpy(&ipaddr, &ip, sizeof(ipaddr));
425
426	if (!inet_aton(pThis->pszNetmask, &ip))
427	{
428	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
429	PDMDEV_SET_ERROR(pThis->pDevIns,
430	pThis->rcInitialization,
431	N_("Configuration error: Invalid \"Netmask\" value"));
432	goto done;
433	}
434	memcpy(&netmask, &ip, sizeof(netmask));
435
436	if (pThis->pszGateway)
437	{
438	if (!inet_aton(pThis->pszGateway, &ip))
439	{
440	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
441	PDMDEV_SET_ERROR(pThis->pDevIns,
442	pThis->rcInitialization,
443	N_("Configuration error: Invalid \"Gateway\" value"));
444	goto done;
445	}
446
447	}
448	else
449	{
450	inet_aton(pThis->pszIP, &ip);
451	}
452	memcpy(&gw, &ip, sizeof(gw));
453
454	pThis->IntNetIF.name[0] = 'I';
455	pThis->IntNetIF.name[1] = 'N';
456
457	ret = netif_add(&pThis->IntNetIF, &ipaddr, &netmask, &gw, NULL,
458	devINIPInterface, lwip_tcpip_input);
459
460	if (!ret)
461	{
462
463	pThis->rcInitialization = VERR_NET_NO_NETWORK;
464	PDMDEV_SET_ERROR(pThis->pDevIns,
465	pThis->rcInitialization,
466	N_("netif_add failed"));
467	goto done;
468	}
469
470	lwip_netif_set_default(&pThis->IntNetIF);
471	lwip_netif_set_up(&pThis->IntNetIF);
472	}
473	done:
474	return;
475	}
476
477
478	/**
479	* This callback is for finitializing our activity on TCPIP thread.
480	* XXX: We do it only for new LWIP, old LWIP will stay broken for now.
481	*/
482	static DECLCALLBACK(void) devINIPTcpipFiniDone(void *arg)
483	{
484	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
485	AssertPtrReturnVoid(arg);
486
487	netif_set_link_down(&pThis->IntNetIF);
488	netif_set_down(&pThis->IntNetIF);
489	netif_remove(&pThis->IntNetIF);
490	}
491
492
493	/**
494	* Gets the current Media Access Control (MAC) address.
495	*
496	* @returns VBox status code.
497	* @param pInterface Pointer to the interface structure containing the called function pointer.
498	* @param pMac Where to store the MAC address.
499	* @thread EMT
500	*/
501	static DECLCALLBACK(int) devINIPGetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
502	{
503	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
504	memcpy(pMac, pThis->MAC.au8, sizeof(RTMAC));
505	return VINF_SUCCESS;
506	}
507
508	/**
509	* Gets the new link state.
510	*
511	* @returns The current link state.
512	* @param pInterface Pointer to the interface structure containing the called function pointer.
513	* @thread EMT
514	*/
515	static DECLCALLBACK(PDMNETWORKLINKSTATE) devINIPGetLinkState(PPDMINETWORKCONFIG pInterface)
516	{
517	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
518	if (pThis->fLnkUp)
519	return PDMNETWORKLINKSTATE_UP;
520	return PDMNETWORKLINKSTATE_DOWN;
521	}
522
523
524	/**
525	* Sets the new link state.
526	*
527	* @returns VBox status code.
528	* @param pInterface Pointer to the interface structure containing the called function pointer.
529	* @param enmState The new link state
530	*/
531	static DECLCALLBACK(int) devINIPSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
532	{
533	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
534	bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
535
536	if (fNewUp != pThis->fLnkUp)
537	{
538	if (fNewUp)
539	{
540	LogFlowFunc(("Link is up\n"));
541	pThis->fLnkUp = true;
542	}
543	else
544	{
545	LogFlowFunc(("Link is down\n"));
546	pThis->fLnkUp = false;
547	}
548	if (pThis->pDrv)
549	pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, enmState);
550	}
551	return VINF_SUCCESS;
552	}
553
554	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
555
556	/**
557	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
558	*/
559	static DECLCALLBACK(void *) devINIPQueryInterface(PPDMIBASE pInterface,
560	const char *pszIID)
561	{
562	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, IBase);
563	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
564	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThis->INetworkDown);
565	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThis->INetworkConfig);
566	return NULL;
567	}
568
569	/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
570
571	/**
572	* Destruct a device instance.
573	*
574	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
575	* resources can be freed correctly.
576	*
577	* @returns VBox status code.
578	* @param pDevIns The device instance data.
579	*/
580	static DECLCALLBACK(int) devINIPDestruct(PPDMDEVINS pDevIns)
581	{
582	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
583
584	LogFlow(("%s: pDevIns=%p\n", __FUNCTION__, pDevIns));
585	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
586
587	if (g_pDevINIPData != NULL)
588	vboxLwipCoreFinalize(devINIPTcpipFiniDone, pThis);
589
590	MMR3HeapFree(pThis->pszIP);
591	pThis->pszIP = NULL;
592	MMR3HeapFree(pThis->pszNetmask);
593	pThis->pszNetmask = NULL;
594	MMR3HeapFree(pThis->pszGateway);
595	pThis->pszGateway = NULL;
596
597	LogFlow(("%s: success\n", __FUNCTION__));
598	return VINF_SUCCESS;
599	}
600
601
602	/**
603	* @interface_method_impl{PDMDEVREG,pfnConstruct}
604	*/
605	static DECLCALLBACK(int) devINIPConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
606	{
607	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
608	int rc = VINF_SUCCESS;
609	err_t errRc = ERR_OK;
610
611	LogFlow(("%s: pDevIns=%p iInstance=%d pCfg=%p\n", __FUNCTION__,
612	pDevIns, iInstance, pCfg));
613
614	Assert(iInstance == 0);
615	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
616
617	/*
618	* Validate the config.
619	*/
620	if (!CFGMR3AreValuesValid(pCfg, "MAC\0IP\0"
621	"IPv6\0"
622	"Netmask\0Gateway\0"))
623	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
624	N_("Unknown Internal Networking IP configuration option"));
625
626	/*
627	* Init the static parts.
628	*/
629	pThis->pszIP = NULL;
630	pThis->pszNetmask = NULL;
631	pThis->pszGateway = NULL;
632	/* Pointer to device instance */
633	pThis->pDevIns = pDevIns;
634	/* IBase */
635	pThis->IBase.pfnQueryInterface = devINIPQueryInterface;
636	/* INetworkDown */
637	pThis->INetworkDown.pfnWaitReceiveAvail = devINIPNetworkDown_WaitInputAvail;
638	pThis->INetworkDown.pfnReceive = devINIPNetworkDown_Input;
639	pThis->INetworkDown.pfnXmitPending = devINIPNetworkDown_XmitPending;
640	/* INetworkConfig */
641	pThis->INetworkConfig.pfnGetMac = devINIPGetMac;
642	pThis->INetworkConfig.pfnGetLinkState = devINIPGetLinkState;
643	pThis->INetworkConfig.pfnSetLinkState = devINIPSetLinkState;
644
645	/*
646	* Get the configuration settings.
647	*/
648	rc = CFGMR3QueryBytes(pCfg, "MAC", &pThis->MAC, sizeof(pThis->MAC));
649	if (rc == VERR_CFGM_NOT_BYTES)
650	{
651	char szMAC[64];
652	rc = CFGMR3QueryString(pCfg, "MAC", &szMAC[0], sizeof(szMAC));
653	if (RT_SUCCESS(rc))
654	{
655	char *macStr = &szMAC[0];
656	char pMac = (char )&pThis->MAC;
657	for (uint32_t i = 0; i < 6; i++)
658	{
659	if ( !macStr \|\| !(macStr + 1)
660	\|\| macStr == ':' \|\| (macStr + 1) == ':')
661	return PDMDEV_SET_ERROR(pDevIns,
662	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
663	N_("Configuration error: Invalid \"MAC\" value"));
664	char c1 = *macStr++ - '0';
665	if (c1 > 9)
666	c1 -= 7;
667	char c2 = *macStr++ - '0';
668	if (c2 > 9)
669	c2 -= 7;
670	*pMac++ = ((c1 & 0x0f) << 4) \| (c2 & 0x0f);
671	if (i != 5 && *macStr == ':')
672	macStr++;
673	}
674	}
675	}
676	if (RT_FAILURE(rc))
677	return PDMDEV_SET_ERROR(pDevIns, rc,
678	N_("Configuration error: Failed to get the \"MAC\" value"));
679	rc = devINIPNetworkConfiguration(pDevIns, pThis, pCfg);
680	AssertLogRelRCReturn(rc, rc);
681
682	/*
683	* Attach driver and query the network connector interface.
684	*/
685	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Network Port");
686	if (RT_FAILURE(rc))
687	{
688	pThis->pDrvBase = NULL;
689	pThis->pDrv = NULL;
690	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Error attaching device below us"));
691	}
692	pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
693	AssertMsgReturn(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"), VERR_PDM_MISSING_INTERFACE_BELOW);
694
695
696	/*
697	* Set up global pointer to interface data.
698	*/
699	g_pDevINIPData = pThis;
700
701
702	/* link hack */
703	pThis->pLinkHack = g_pDevINILinkHack;
704
705	/*
706	* Initialize lwIP.
707	*/
708	vboxLwipCoreInitialize(devINIPTcpipInitDone, pThis);
709
710	/* this rc could be updated in devINIPTcpInitDone thread */
711	AssertRCReturn(pThis->rcInitialization, pThis->rcInitialization);
712
713
714	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
715	return rc;
716	}
717
718
719	/**
720	* Query whether lwIP is initialized or not. Since there is only a single
721	* instance of this device ever for a VM, it can be a global function.
722	*
723	* @returns True if lwIP is initialized.
724	*/
725	bool DevINIPConfigured(void)
726	{
727	return g_pDevINIPData != NULL;
728	}
729
730
731	/**
732	* Internal network IP stack device registration record.
733	*/
734	const PDMDEVREG g_DeviceINIP =
735	{
736	/* u32Version */
737	PDM_DEVREG_VERSION,
738	/* szName */
739	"IntNetIP",
740	/* szRCMod/szR0Mod */
741	"",
742	"",
743	/* pszDescription */
744	"Internal Network IP stack device",
745	/* fFlags */
746	PDM_DEVREG_FLAGS_DEFAULT_BITS,
747	/* fClass. As this is used by the storage devices, it must come earlier. */
748	PDM_DEVREG_CLASS_VMM_DEV,
749	/* cMaxInstances */
750	1,
751	/* cbInstance */
752	sizeof(DEVINTNETIP),
753	/* pfnConstruct */
754	devINIPConstruct,
755	/* pfnDestruct */
756	devINIPDestruct,
757	/* pfnRelocate */
758	NULL,
759	/* pfnMemSetup */
760	NULL,
761	/* pfnPowerOn */
762	NULL,
763	/* pfnReset */
764	NULL,
765	/* pfnSuspend */
766	NULL,
767	/* pfnResume */
768	NULL,
769	/* pfnAttach */
770	NULL,
771	/* pfnDetach */
772	NULL,
773	/* pfnQueryInterface */
774	NULL,
775	/* pfnInitComplete */
776	NULL,
777	/* pfnPowerOff */
778	NULL,
779	/* pfnSoftReset */
780	NULL,
781	/* u32VersionEnd */
782	PDM_DEVREG_VERSION
783	};

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source: vbox/trunk/src/VBox/Devices/Network/DevINIP.cpp@ 61009

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