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DevINIP.cpp

Last change on this file was 98103, checked in by vboxsync, 16 months ago
Copyright year updates by scm.
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1	/* $Id: DevINIP.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* DevINIP - Internal Network IP stack device/service.
4	*/
5
6	/*
7	* Copyright (C) 2007-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DEV_INIP
33	#include <iprt/cdefs.h> /* include early to allow RT_C_DECLS_BEGIN hack */
34	#include <iprt/mem.h> /* include anything of ours that the lwip headers use. */
35	#include <iprt/semaphore.h>
36	#include <iprt/thread.h>
37	#include <iprt/alloca.h>
38	/* All lwip header files are not C++ safe. So hack around this. */
39	RT_C_DECLS_BEGIN
40	#include "lwip/sys.h"
41	#include "lwip/stats.h"
42	#include "lwip/mem.h"
43	#include "lwip/memp.h"
44	#include "lwip/pbuf.h"
45	#include "lwip/netif.h"
46	#include "lwip/api.h"
47	#include "lwip/tcp_impl.h"
48	# if LWIP_IPV6
49	# include "ipv6/lwip/ethip6.h"
50	# endif
51	#include "lwip/udp.h"
52	#include "lwip/tcp.h"
53	#include "lwip/tcpip.h"
54	#include "lwip/sockets.h"
55	#include "netif/etharp.h"
56	RT_C_DECLS_END
57	#include <VBox/vmm/pdmdev.h>
58	#include <VBox/vmm/pdmnetifs.h>
59	#include <VBox/vmm/tm.h>
60	#include <iprt/assert.h>
61	#include <iprt/string.h>
62	#include <iprt/uuid.h>
63
64	#include "VBoxDD.h"
65	#include "VBoxLwipCore.h"
66
67
68	/*********************************************************************************************************************************
69	* Macros and Defines *
70	*********************************************************************************************************************************/
71	/** Maximum frame size this device can handle. */
72	#define DEVINIP_MAX_FRAME 1514
73
74
75	/*********************************************************************************************************************************
76	* Structures and Typedefs *
77	*********************************************************************************************************************************/
78	/**
79	* Internal Network IP stack device instance data.
80	*
81	* @implements PDMIBASE
82	* @implements PDMINETWORKDOWN
83	*/
84	typedef struct DEVINTNETIP
85	{
86	/** The base interface for LUN\#0. */
87	PDMIBASE IBase;
88	/** The network port this device provides (LUN\#0). */
89	PDMINETWORKDOWN INetworkDown;
90	/** The network configuration port this device provides (LUN\#0). */
91	PDMINETWORKCONFIG INetworkConfig;
92	/** The base interface of the network driver below us. */
93	PPDMIBASE pDrvBase;
94	/** The connector of the network driver below us. */
95	PPDMINETWORKUP pDrv;
96	/** Pointer to the device instance. */
97	PPDMDEVINSR3 pDevIns;
98	/** MAC address. */
99	RTMAC MAC;
100	/** Static IP address of the interface. */
101	char *pszIP;
102	/** Netmask of the interface. */
103	char *pszNetmask;
104	/** Gateway for the interface. */
105	char *pszGateway;
106	/** lwIP network interface description. */
107	struct netif IntNetIF;
108	/** lwIP ARP timer. */
109	PTMTIMERR3 ARPTimer;
110	/** lwIP TCP fast timer. */
111	PTMTIMERR3 TCPFastTimer;
112	/** lwIP TCP slow timer. */
113	PTMTIMERR3 TCPSlowTimer;
114	/** lwIP semaphore to coordinate TCPIP init/terminate. */
115	sys_sem_t LWIPTcpInitSem;
116	/** hack: get linking right. remove this eventually, once the device
117	* provides a proper interface to all IP stack functions. */
118	const void *pLinkHack;
119	/** Flag whether the link is up. */
120	bool fLnkUp;
121	/**
122	* In callback we're getting status of interface adding operation (TCPIP thread),
123	* but we need inform constructing routine whether it was success or not(EMT thread).
124	*/
125	int rcInitialization;
126	} DEVINTNETIP;
127	/** Pointer to the instance data for an Internal Network IP stack. */
128	typedef DEVINTNETIP *PDEVINTNETIP;
129
130
131	/*********************************************************************************************************************************
132	* Global Variables *
133	*********************************************************************************************************************************/
134	/**
135	* Pointer to the (only) instance data in this device.
136	*/
137	static PDEVINTNETIP g_pDevINIPData = NULL;
138
139	/*
140	* really ugly hack to avoid linking problems on unix style platforms
141	* using .a libraries for now.
142	*/
143	static const struct CLANG11WEIRDNESS { PFNRT pfn; } g_pDevINILinkHack[] =
144	{
145	{ (PFNRT)lwip_socket },
146	{ (PFNRT)lwip_close },
147	{ (PFNRT)lwip_setsockopt },
148	{ (PFNRT)lwip_recv },
149	{ (PFNRT)lwip_send },
150	{ (PFNRT)lwip_select },
151	};
152
153
154	#if 0 /* unused */
155	/**
156	* Output a TCP/IP packet on the interface. Uses the generic lwIP ARP
157	* code to resolve the address and call the link-level packet function.
158	*
159	* @returns lwIP error code
160	* @param netif Interface on which to send IP packet.
161	* @param p Packet data.
162	* @param ipaddr Destination IP address.
163	*/
164	static err_t devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr)
165	{
166	err_t lrc;
167	LogFlow(("%s: netif=%p p=%p ipaddr=%#04x\n", __FUNCTION__, netif, p,
168	ipaddr->addr));
169
170	lrc = lwip_etharp_output(netif, p, ipaddr);
171
172	LogFlow(("%s: return %d\n", __FUNCTION__, lrc));
173	return lrc;
174	}
175	#endif
176
177	/**
178	* Output a raw packet on the interface.
179	*
180	* @returns lwIP error code
181	* @param netif Interface on which to send frame.
182	* @param p Frame data.
183	*/
184	static err_t devINIPOutputRaw(struct netif netif, struct pbuf p)
185	{
186	NOREF(netif);
187	int rc = VINF_SUCCESS;
188
189	LogFlow(("%s: netif=%p p=%p\n", __FUNCTION__, netif, p));
190	Assert(g_pDevINIPData);
191	Assert(g_pDevINIPData->pDrv);
192
193	/* Silently ignore packets being sent while lwIP isn't set up. */
194	if (g_pDevINIPData)
195	{
196	PPDMSCATTERGATHER pSgBuf;
197
198	rc = g_pDevINIPData->pDrv->pfnBeginXmit(g_pDevINIPData->pDrv, true /* fOnWorkerThread */);
199	if (RT_FAILURE(rc))
200	return ERR_IF;
201
202	rc = g_pDevINIPData->pDrv->pfnAllocBuf(g_pDevINIPData->pDrv, DEVINIP_MAX_FRAME, NULL /pGso/, &pSgBuf);
203	if (RT_SUCCESS(rc))
204	{
205	#if ETH_PAD_SIZE
206	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
207	#endif
208
209	uint8_t pbBuf = pSgBuf ? (uint8_t )pSgBuf->aSegs[0].pvSeg : NULL;
210	size_t cbBuf = 0;
211	for (struct pbuf *q = p; q != NULL; q = q->next)
212	{
213	if (cbBuf + q->len <= DEVINIP_MAX_FRAME)
214	{
215	if (RT_LIKELY(pbBuf))
216	{
217	memcpy(pbBuf, q->payload, q->len);
218	pbBuf += q->len;
219	}
220	cbBuf += q->len;
221	}
222	else
223	{
224	LogRel(("INIP: exceeded frame size\n"));
225	break;
226	}
227	}
228	if (cbBuf)
229	{
230	pSgBuf->cbUsed = cbBuf;
231	rc = g_pDevINIPData->pDrv->pfnSendBuf(g_pDevINIPData->pDrv, pSgBuf, true /* fOnWorkerThread */);
232	}
233	else
234	rc = g_pDevINIPData->pDrv->pfnFreeBuf(g_pDevINIPData->pDrv, pSgBuf);
235
236	#if ETH_PAD_SIZE
237	lwip_pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
238	#endif
239	}
240
241	g_pDevINIPData->pDrv->pfnEndXmit(g_pDevINIPData->pDrv);
242	}
243
244	err_t lrc = ERR_OK;
245	if (RT_FAILURE(rc))
246	lrc = ERR_IF;
247	LogFlow(("%s: return %d (vbox: %Rrc)\n", __FUNCTION__, rc, lrc));
248	return lrc;
249	}
250
251	/**
252	* Implements the ethernet interface backend initialization for lwIP.
253	*
254	* @returns lwIP error code
255	* @param netif Interface to configure.
256	*/
257	static err_t devINIPInterface(struct netif *netif) RT_NOTHROW_DEF
258	{
259	LogFlow(("%s: netif=%p\n", __FUNCTION__, netif));
260	Assert(g_pDevINIPData != NULL);
261	netif->state = g_pDevINIPData;
262	netif->hwaddr_len = sizeof(g_pDevINIPData->MAC);
263	memcpy(netif->hwaddr, &g_pDevINIPData->MAC, sizeof(g_pDevINIPData->MAC));
264	netif->mtu = DEVINIP_MAX_FRAME;
265	netif->flags = NETIF_FLAG_BROADCAST;
266	netif->flags \|= NETIF_FLAG_ETHARP;
267	netif->flags \|= NETIF_FLAG_ETHERNET;
268
269	#if LWIP_IPV6
270	netif_create_ip6_linklocal_address(netif, 0);
271	netif_ip6_addr_set_state(netif, 0, IP6_ADDR_VALID);
272	netif->output_ip6 = ethip6_output;
273	netif->ip6_autoconfig_enabled=1;
274	LogFunc(("netif: ipv6:%RTnaipv6\n", &netif->ip6_addr[0].addr[0]));
275	#endif
276
277	netif->output = lwip_etharp_output;
278	netif->linkoutput = devINIPOutputRaw;
279
280	LogFlow(("%s: success\n", __FUNCTION__));
281	return ERR_OK;
282	}
283
284	/**
285	* Parses CFGM parameters related to network connection
286	*/
287	static DECLCALLBACK(int) devINIPNetworkConfiguration(PPDMDEVINS pDevIns, PDEVINTNETIP pThis, PCFGMNODE pCfg)
288	{
289	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
290
291	int rc = pHlp->pfnCFGMQueryStringAlloc(pCfg, "IP", &pThis->pszIP);
292	if (RT_FAILURE(rc))
293	/** @todo perhaps we should panic if IPv4 address isn't specify, with assumtion that
294	* ISCSI target specified in IPv6 form. */
295	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the \"IP\" value"));
296
297	rc = pHlp->pfnCFGMQueryStringAlloc(pCfg, "Netmask", &pThis->pszNetmask);
298	if (RT_FAILURE(rc))
299	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the \"Netmask\" value"));
300
301	rc = pHlp->pfnCFGMQueryStringAlloc(pCfg, "Gateway", &pThis->pszGateway);
302	if ( RT_FAILURE(rc)
303	&& rc != VERR_CFGM_VALUE_NOT_FOUND)
304	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the \"Gateway\" value"));
305
306	return VINF_SUCCESS;
307	}
308
309	/**
310	* Wait until data can be received.
311	*
312	* @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
313	* @param pInterface PDM network port interface pointer.
314	* @param cMillies Number of milliseconds to wait. 0 means return immediately.
315	*/
316	static DECLCALLBACK(int) devINIPNetworkDown_WaitInputAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
317	{
318	RT_NOREF(pInterface, cMillies);
319	LogFlow(("%s: pInterface=%p\n", __FUNCTION__, pInterface));
320	LogFlow(("%s: return VINF_SUCCESS\n", __FUNCTION__));
321	return VINF_SUCCESS;
322	}
323
324	/**
325	* Receive data and pass it to lwIP for processing.
326	*
327	* @returns VBox status code
328	* @param pInterface PDM network port interface pointer.
329	* @param pvBuf Pointer to frame data.
330	* @param cb Frame size.
331	*/
332	static DECLCALLBACK(int) devINIPNetworkDown_Input(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
333	{
334	RT_NOREF(pInterface);
335	const uint8_t pbBuf = (const uint8_t )pvBuf;
336	size_t len = cb;
337	const struct eth_hdr *ethhdr;
338	struct pbuf p, q;
339
340	LogFlow(("%s: pInterface=%p pvBuf=%p cb=%lu\n", __FUNCTION__, pInterface, pvBuf, cb));
341	Assert(g_pDevINIPData);
342	Assert(g_pDevINIPData->pDrv);
343
344	/* Silently ignore packets being received while lwIP isn't set up. */
345	if (!g_pDevINIPData)
346	{
347	LogFlow(("%s: return %Rrc (no global)\n", __FUNCTION__, VINF_SUCCESS));
348	return VINF_SUCCESS;
349	}
350
351	#if ETH_PAD_SIZE
352	len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
353	#endif
354
355	/* We allocate a pbuf chain of pbufs from the pool. */
356	Assert((u16_t)len == len);
357	p = lwip_pbuf_alloc(PBUF_RAW, (u16_t)len, PBUF_POOL);
358	if (p != NULL)
359	{
360	#if ETH_PAD_SIZE
361	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
362	#endif
363
364	for (q = p; q != NULL; q = q->next)
365	{
366	/* Fill the buffers, and clean out unused buffer space. */
367	memcpy(q->payload, pbBuf, RT_MIN(cb, q->len));
368	pbBuf += RT_MIN(cb, q->len);
369	if (q->len > cb)
370	memset(((uint8_t *)q->payload) + cb, '\0', q->len - cb);
371	cb -= RT_MIN(cb, q->len);
372	}
373
374	ethhdr = (const struct eth_hdr *)p->payload;
375	struct netif *iface = &g_pDevINIPData->IntNetIF;
376
377	/* We've setup flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET
378	so this should be thread-safe. */
379	tcpip_input(p,iface);
380	}
381
382	LogFlow(("%s: return %Rrc\n", __FUNCTION__, VINF_SUCCESS));
383	return VINF_SUCCESS;
384	}
385
386	/**
387	* @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
388	*/
389	static DECLCALLBACK(void) devINIPNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
390	{
391	NOREF(pInterface);
392	}
393
394
395	/**
396	* Signals the end of lwIP TCPIP initialization.
397	*
398	* @param arg opaque argument, here the pointer to the PDEVINTNETIP.
399	* @note TCPIP thread, corresponding EMT waiting on semaphore.
400	*/
401	static DECLCALLBACK(void) devINIPTcpipInitDone(void *arg)
402	{
403	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
404	AssertPtrReturnVoid(arg);
405
406	pThis->rcInitialization = VINF_SUCCESS;
407	struct in_addr ip;
408	if (!inet_aton(pThis->pszIP, &ip))
409	{
410	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
411	PDMDEV_SET_ERROR(pThis->pDevIns, pThis->rcInitialization, N_("Configuration error: Invalid \"IP\" value"));
412	return;
413	}
414	struct ip_addr ipaddr;
415	memcpy(&ipaddr, &ip, sizeof(ipaddr));
416
417	if (!inet_aton(pThis->pszNetmask, &ip))
418	{
419	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
420	PDMDEV_SET_ERROR(pThis->pDevIns, pThis->rcInitialization, N_("Configuration error: Invalid \"Netmask\" value"));
421	return;
422	}
423	struct ip_addr netmask;
424	memcpy(&netmask, &ip, sizeof(netmask));
425
426	if (pThis->pszGateway)
427	{
428	if (!inet_aton(pThis->pszGateway, &ip))
429	{
430	pThis->rcInitialization = VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
431	PDMDEV_SET_ERROR(pThis->pDevIns, pThis->rcInitialization, N_("Configuration error: Invalid \"Gateway\" value"));
432	return;
433	}
434	}
435	else
436	inet_aton(pThis->pszIP, &ip);
437	struct ip_addr gw;
438	memcpy(&gw, &ip, sizeof(gw));
439
440	pThis->IntNetIF.name[0] = 'I';
441	pThis->IntNetIF.name[1] = 'N';
442
443	struct netif *ret = netif_add(&pThis->IntNetIF, &ipaddr, &netmask, &gw, NULL, devINIPInterface, lwip_tcpip_input);
444	if (!ret)
445	{
446
447	pThis->rcInitialization = VERR_NET_NO_NETWORK;
448	PDMDEV_SET_ERROR(pThis->pDevIns, pThis->rcInitialization, N_("netif_add failed"));
449	return;
450	}
451
452	lwip_netif_set_default(&pThis->IntNetIF);
453	lwip_netif_set_up(&pThis->IntNetIF);
454	}
455
456
457	/**
458	* This callback is for finitializing our activity on TCPIP thread.
459	* @todo XXX: We do it only for new LWIP, old LWIP will stay broken for now.
460	*/
461	static DECLCALLBACK(void) devINIPTcpipFiniDone(void *arg)
462	{
463	PDEVINTNETIP pThis = (PDEVINTNETIP)arg;
464	AssertPtrReturnVoid(arg);
465
466	netif_set_link_down(&pThis->IntNetIF);
467	netif_set_down(&pThis->IntNetIF);
468	netif_remove(&pThis->IntNetIF);
469	}
470
471
472	/**
473	* Gets the current Media Access Control (MAC) address.
474	*
475	* @returns VBox status code.
476	* @param pInterface Pointer to the interface structure containing the called function pointer.
477	* @param pMac Where to store the MAC address.
478	* @thread EMT
479	*/
480	static DECLCALLBACK(int) devINIPGetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
481	{
482	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
483	memcpy(pMac, pThis->MAC.au8, sizeof(RTMAC));
484	return VINF_SUCCESS;
485	}
486
487	/**
488	* Gets the new link state.
489	*
490	* @returns The current link state.
491	* @param pInterface Pointer to the interface structure containing the called function pointer.
492	* @thread EMT
493	*/
494	static DECLCALLBACK(PDMNETWORKLINKSTATE) devINIPGetLinkState(PPDMINETWORKCONFIG pInterface)
495	{
496	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
497	if (pThis->fLnkUp)
498	return PDMNETWORKLINKSTATE_UP;
499	return PDMNETWORKLINKSTATE_DOWN;
500	}
501
502
503	/**
504	* Sets the new link state.
505	*
506	* @returns VBox status code.
507	* @param pInterface Pointer to the interface structure containing the called function pointer.
508	* @param enmState The new link state
509	*/
510	static DECLCALLBACK(int) devINIPSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
511	{
512	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
513	bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
514
515	if (fNewUp != pThis->fLnkUp)
516	{
517	if (fNewUp)
518	{
519	LogFlowFunc(("Link is up\n"));
520	pThis->fLnkUp = true;
521	}
522	else
523	{
524	LogFlowFunc(("Link is down\n"));
525	pThis->fLnkUp = false;
526	}
527	if (pThis->pDrv)
528	pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, enmState);
529	}
530	return VINF_SUCCESS;
531	}
532
533	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
534
535	/**
536	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
537	*/
538	static DECLCALLBACK(void *) devINIPQueryInterface(PPDMIBASE pInterface,
539	const char *pszIID)
540	{
541	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, IBase);
542	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
543	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThis->INetworkDown);
544	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThis->INetworkConfig);
545	return NULL;
546	}
547
548	/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
549
550	/**
551	* Destruct a device instance.
552	*
553	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
554	* resources can be freed correctly.
555	*
556	* @returns VBox status code.
557	* @param pDevIns The device instance data.
558	*/
559	static DECLCALLBACK(int) devINIPDestruct(PPDMDEVINS pDevIns)
560	{
561	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
562	LogFlow(("devINIPDestruct: pDevIns=%p\n", pDevIns));
563	PDEVINTNETIP pThis = PDMDEVINS_2_DATA(pDevIns, PDEVINTNETIP);
564
565	if (g_pDevINIPData != NULL)
566	vboxLwipCoreFinalize(devINIPTcpipFiniDone, pThis);
567
568	PDMDevHlpMMHeapFree(pDevIns, pThis->pszIP);
569	pThis->pszIP = NULL;
570	PDMDevHlpMMHeapFree(pDevIns, pThis->pszNetmask);
571	pThis->pszNetmask = NULL;
572	PDMDevHlpMMHeapFree(pDevIns, pThis->pszGateway);
573	pThis->pszGateway = NULL;
574
575	LogFlow(("%s: success\n", __FUNCTION__));
576	return VINF_SUCCESS;
577	}
578
579
580	/**
581	* @interface_method_impl{PDMDEVREG,pfnConstruct}
582	*/
583	static DECLCALLBACK(int) devINIPConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
584	{
585	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
586	PDEVINTNETIP pThis = PDMDEVINS_2_DATA(pDevIns, PDEVINTNETIP);
587	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
588	LogFlow(("devINIPConstruct: pDevIns=%p iInstance=%d pCfg=%p\n", pDevIns, iInstance, pCfg));
589	RT_NOREF(iInstance);
590
591	Assert(iInstance == 0);
592
593	/*
594	* Init the static parts.
595	*/
596	//pThis->pszIP = NULL;
597	//pThis->pszNetmask = NULL;
598	//pThis->pszGateway = NULL;
599	/* Pointer to device instance */
600	pThis->pDevIns = pDevIns;
601	/* IBase */
602	pThis->IBase.pfnQueryInterface = devINIPQueryInterface;
603	/* INetworkDown */
604	pThis->INetworkDown.pfnWaitReceiveAvail = devINIPNetworkDown_WaitInputAvail;
605	pThis->INetworkDown.pfnReceive = devINIPNetworkDown_Input;
606	pThis->INetworkDown.pfnXmitPending = devINIPNetworkDown_XmitPending;
607	/* INetworkConfig */
608	pThis->INetworkConfig.pfnGetMac = devINIPGetMac;
609	pThis->INetworkConfig.pfnGetLinkState = devINIPGetLinkState;
610	pThis->INetworkConfig.pfnSetLinkState = devINIPSetLinkState;
611
612
613	/*
614	* Validate the config.
615	*/
616	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "MAC\|IP\|IPv6\|Netmask\|Gateway", "");
617
618	/*
619	* Get the configuration settings.
620	*/
621	int rc = pHlp->pfnCFGMQueryBytes(pCfg, "MAC", &pThis->MAC, sizeof(pThis->MAC));
622	if (rc == VERR_CFGM_NOT_BYTES)
623	{
624	char szMAC[64];
625	rc = pHlp->pfnCFGMQueryString(pCfg, "MAC", &szMAC[0], sizeof(szMAC));
626	if (RT_SUCCESS(rc))
627	{
628	char *macStr = &szMAC[0];
629	char pMac = (char )&pThis->MAC;
630	for (uint32_t i = 0; i < 6; i++)
631	{
632	if (!macStr \|\| !macStr[1] \|\| macStr == ':' \|\| macStr[1] == ':')
633	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
634	N_("Configuration error: Invalid \"MAC\" value"));
635	char c1 = *macStr++ - '0';
636	if (c1 > 9)
637	c1 -= 7;
638	char c2 = *macStr++ - '0';
639	if (c2 > 9)
640	c2 -= 7;
641	*pMac++ = ((c1 & 0x0f) << 4) \| (c2 & 0x0f);
642	if (i != 5 && *macStr == ':')
643	macStr++;
644	}
645	}
646	}
647	if (RT_FAILURE(rc))
648	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the \"MAC\" value"));
649	rc = devINIPNetworkConfiguration(pDevIns, pThis, pCfg);
650	AssertLogRelRCReturn(rc, rc);
651
652	/*
653	* Attach driver and query the network connector interface.
654	*/
655	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Network Port");
656	if (RT_FAILURE(rc))
657	{
658	pThis->pDrvBase = NULL;
659	pThis->pDrv = NULL;
660	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Error attaching device below us"));
661	}
662	pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
663	AssertMsgReturn(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"), VERR_PDM_MISSING_INTERFACE_BELOW);
664
665
666	/*
667	* Set up global pointer to interface data.
668	*/
669	g_pDevINIPData = pThis;
670
671
672	/* link hack */
673	pThis->pLinkHack = g_pDevINILinkHack;
674
675	/*
676	* Initialize lwIP.
677	*/
678	vboxLwipCoreInitialize(devINIPTcpipInitDone, pThis);
679
680	/* this rc could be updated in devINIPTcpInitDone thread */
681	AssertRCReturn(pThis->rcInitialization, pThis->rcInitialization);
682
683
684	LogFlow(("devINIPConstruct: return %Rrc\n", rc));
685	return rc;
686	}
687
688
689	/**
690	* Query whether lwIP is initialized or not. Since there is only a single
691	* instance of this device ever for a VM, it can be a global function.
692	*
693	* @returns True if lwIP is initialized.
694	*/
695	bool DevINIPConfigured(void)
696	{
697	return g_pDevINIPData != NULL;
698	}
699
700
701	/**
702	* Internal network IP stack device registration record.
703	*/
704	const PDMDEVREG g_DeviceINIP =
705	{
706	/* .u32Version = */ PDM_DEVREG_VERSION,
707	/* .uReserved0 = */ 0,
708	/* .szName = */ "IntNetIP",
709	/* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_NEW_STYLE,
710	/* .fClass = / PDM_DEVREG_CLASS_VMM_DEV, / As this is used by the storage devices, it must come earlier. */
711	/* .cMaxInstances = */ 1,
712	/* .uSharedVersion = */ 42,
713	/* .cbInstanceShared = */ sizeof(DEVINTNETIP),
714	/* .cbInstanceCC = */ 0,
715	/* .cbInstanceRC = */ 0,
716	/* .cMaxPciDevices = */ 0,
717	/* .cMaxMsixVectors = */ 0,
718	/* .pszDescription = */ "Internal Network IP stack device",
719	#if defined(IN_RING3)
720	/* .pszRCMod = */ "",
721	/* .pszR0Mod = */ "",
722	/* .pfnConstruct = */ devINIPConstruct,
723	/* .pfnDestruct = */ devINIPDestruct,
724	/* .pfnRelocate = */ NULL,
725	/* .pfnMemSetup = */ NULL,
726	/* .pfnPowerOn = */ NULL,
727	/* .pfnReset = */ NULL,
728	/* .pfnSuspend = */ NULL,
729	/* .pfnResume = */ NULL,
730	/* .pfnAttach = */ NULL,
731	/* .pfnDetach = */ NULL,
732	/* .pfnQueryInterface = */ NULL,
733	/* .pfnInitComplete = */ NULL,
734	/* .pfnPowerOff = */ NULL,
735	/* .pfnSoftReset = */ NULL,
736	/* .pfnReserved0 = */ NULL,
737	/* .pfnReserved1 = */ NULL,
738	/* .pfnReserved2 = */ NULL,
739	/* .pfnReserved3 = */ NULL,
740	/* .pfnReserved4 = */ NULL,
741	/* .pfnReserved5 = */ NULL,
742	/* .pfnReserved6 = */ NULL,
743	/* .pfnReserved7 = */ NULL,
744	#elif defined(IN_RING0)
745	/* .pfnEarlyConstruct = */ NULL,
746	/* .pfnConstruct = */ NULL,
747	/* .pfnDestruct = */ NULL,
748	/* .pfnFinalDestruct = */ NULL,
749	/* .pfnRequest = */ NULL,
750	/* .pfnReserved0 = */ NULL,
751	/* .pfnReserved1 = */ NULL,
752	/* .pfnReserved2 = */ NULL,
753	/* .pfnReserved3 = */ NULL,
754	/* .pfnReserved4 = */ NULL,
755	/* .pfnReserved5 = */ NULL,
756	/* .pfnReserved6 = */ NULL,
757	/* .pfnReserved7 = */ NULL,
758	#elif defined(IN_RC)
759	/* .pfnConstruct = */ NULL,
760	/* .pfnReserved0 = */ NULL,
761	/* .pfnReserved1 = */ NULL,
762	/* .pfnReserved2 = */ NULL,
763	/* .pfnReserved3 = */ NULL,
764	/* .pfnReserved4 = */ NULL,
765	/* .pfnReserved5 = */ NULL,
766	/* .pfnReserved6 = */ NULL,
767	/* .pfnReserved7 = */ NULL,
768	#else
769	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
770	#endif
771	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
772	};
773

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

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