DevINIP.cpp@ 45761

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1	/* $Id: DevINIP.cpp 45356 2013-04-05 07:01:27Z 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
59	/*******************************************************************************
60	* Macros and Defines *
61	*******************************************************************************/
62
63	/** Maximum frame size this device can handle. */
64	#define DEVINIP_MAX_FRAME 1514
65
66
67	/*******************************************************************************
68	* Structures and Typedefs *
69	*******************************************************************************/
70
71	/**
72	* Internal Network IP stack device instance data.
73	*
74	* @implements PDMIBASE
75	* @implements PDMINETWORKDOWN
76	*/
77	typedef struct DEVINTNETIP
78	{
79	/** The base interface for LUN\#0. */
80	PDMIBASE IBase;
81	/** The network port this device provides (LUN\#0). */
82	PDMINETWORKDOWN INetworkDown;
83	/** The network configuration port this device provides (LUN\#0). */
84	PDMINETWORKCONFIG INetworkConfig;
85	/** The base interface of the network driver below us. */
86	PPDMIBASE pDrvBase;
87	/** The connector of the network driver below us. */
88	PPDMINETWORKUP pDrv;
89	/** Pointer to the device instance. */
90	PPDMDEVINSR3 pDevIns;
91	/** MAC address. */
92	RTMAC MAC;
93	/** Static IP address of the interface. */
94	char *pszIP;
95	/** Netmask of the interface. */
96	char *pszNetmask;
97	/** Gateway for the interface. */
98	char *pszGateway;
99	/** lwIP network interface description. */
100	struct netif IntNetIF;
101	/** lwIP ARP timer. */
102	PTMTIMERR3 ARPTimer;
103	/** lwIP TCP fast timer. */
104	PTMTIMERR3 TCPFastTimer;
105	/** lwIP TCP slow timer. */
106	PTMTIMERR3 TCPSlowTimer;
107	/** lwIP semaphore to coordinate TCPIP init/terminate. */
108	sys_sem_t LWIPTcpInitSem;
109	/** hack: get linking right. remove this eventually, once the device
110	* provides a proper interface to all IP stack functions. */
111	const void *pLinkHack;
112	/** Flag whether the link is up. */
113	bool fLnkUp;
114	} DEVINTNETIP, *PDEVINTNETIP;
115
116
117	/*******************************************************************************
118	* Global Variables *
119	*******************************************************************************/
120
121	/**
122	* Pointer to the (only) instance data in this device.
123	*/
124	static PDEVINTNETIP g_pDevINIPData = NULL;
125
126	/*
127	* really ugly hack to avoid linking problems on unix style platforms
128	* using .a libraries for now.
129	*/
130	static const PFNRT g_pDevINILinkHack[] =
131	{
132	(PFNRT)lwip_socket,
133	(PFNRT)lwip_close,
134	(PFNRT)lwip_setsockopt,
135	(PFNRT)lwip_recv,
136	(PFNRT)lwip_send,
137	(PFNRT)lwip_select
138	};
139
140
141	/*******************************************************************************
142	* Internal Functions *
143	*******************************************************************************/
144	static DECLCALLBACK(void) devINIPARPTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
145	static DECLCALLBACK(void) devINIPTCPFastTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
146	static DECLCALLBACK(void) devINIPTCPSlowTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer);
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	* ARP cache timeout handling for lwIP.
154	*
155	* @param pDevIns Device instance.
156	* @param pTimer Pointer to timer.
157	*/
158	static DECLCALLBACK(void) devINIPARPTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
159	{
160	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
161	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
162	lwip_etharp_tmr();
163	TMTimerSetMillies(pThis->ARPTimer, ARP_TMR_INTERVAL);
164	LogFlow(("%s: return\n", __FUNCTION__));
165	}
166
167	/**
168	* TCP fast timer handling for lwIP.
169	*
170	* @param pDevIns Device instance.
171	* @param pTimer Pointer to timer.
172	*/
173	static DECLCALLBACK(void) devINIPTCPFastTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
174	{
175	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
176	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
177	lwip_tcp_fasttmr();
178	TMTimerSetMillies(pThis->TCPFastTimer, TCP_FAST_INTERVAL);
179	LogFlow(("%s: return\n", __FUNCTION__));
180	}
181
182	/**
183	* TCP slow timer handling for lwIP.
184	*
185	* @param pDevIns Device instance.
186	* @param pTimer Pointer to timer.
187	*/
188	static DECLCALLBACK(void) devINIPTCPSlowTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
189	{
190	PDEVINTNETIP pThis = (PDEVINTNETIP)pvUser;
191	LogFlow(("%s: pDevIns=%p pTimer=%p\n", __FUNCTION__, pDevIns, pTimer));
192	lwip_tcp_slowtmr();
193	TMTimerSetMillies(pThis->TCPSlowTimer, TCP_SLOW_INTERVAL);
194	LogFlow(("%s: return\n", __FUNCTION__));
195	}
196
197	/**
198	* Output a TCP/IP packet on the interface. Uses the generic lwIP ARP
199	* code to resolve the address and call the link-level packet function.
200	*
201	* @returns lwIP error code
202	* @param netif Interface on which to send IP packet.
203	* @param p Packet data.
204	* @param ipaddr Destination IP address.
205	*/
206	static DECLCALLBACK(err_t) devINIPOutput(struct netif netif, struct pbuf p, struct ip_addr *ipaddr)
207	{
208	err_t lrc;
209	LogFlow(("%s: netif=%p p=%p ipaddr=%#04x\n", __FUNCTION__, netif, p,
210	ipaddr->addr));
211	#ifndef VBOX_WITH_NEW_LWIP
212	lrc = lwip_etharp_output(netif, ipaddr, p);
213	#else
214	lrc = lwip_etharp_output(netif, p, ipaddr);
215	#endif
216	LogFlow(("%s: return %d\n", __FUNCTION__, lrc));
217	return lrc;
218	}
219
220	/**
221	* Output a raw packet on the interface.
222	*
223	* @returns lwIP error code
224	* @param netif Interface on which to send frame.
225	* @param p Frame data.
226	*/
227	static DECLCALLBACK(err_t) devINIPOutputRaw(struct netif netif, struct pbuf p)
228	{
229	int rc = VINF_SUCCESS;
230
231	LogFlow(("%s: netif=%p p=%p\n", __FUNCTION__, netif, p));
232	Assert(g_pDevINIPData);
233	Assert(g_pDevINIPData->pDrv);
234
235	/* Silently ignore packets being sent while lwIP isn't set up. */
236	if (g_pDevINIPData)
237	{
238	PPDMSCATTERGATHER pSgBuf;
239
240	rc = g_pDevINIPData->pDrv->pfnBeginXmit(g_pDevINIPData->pDrv, true /* fOnWorkerThread */);
241	if (RT_FAILURE(rc))
242	return ERR_IF;
243
244	rc = g_pDevINIPData->pDrv->pfnAllocBuf(g_pDevINIPData->pDrv, DEVINIP_MAX_FRAME, NULL /pGso/, &pSgBuf);
245	if (RT_SUCCESS(rc))
246	{
247	#if ETH_PAD_SIZE
248	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
249	#endif
250
251	uint8_t pbBuf = pSgBuf ? (uint8_t )pSgBuf->aSegs[0].pvSeg : NULL;
252	size_t cbBuf = 0;
253	for (struct pbuf *q = p; q != NULL; q = q->next)
254	{
255	if (cbBuf + q->len <= DEVINIP_MAX_FRAME)
256	{
257	if (RT_LIKELY(pbBuf))
258	{
259	memcpy(pbBuf, q->payload, q->len);
260	pbBuf += q->len;
261	}
262	cbBuf += q->len;
263	}
264	else
265	{
266	LogRel(("INIP: exceeded frame size\n"));
267	break;
268	}
269	}
270	if (cbBuf)
271	{
272	pSgBuf->cbUsed = cbBuf;
273	rc = g_pDevINIPData->pDrv->pfnSendBuf(g_pDevINIPData->pDrv, pSgBuf, true /* fOnWorkerThread */);
274	}
275	else
276	rc = g_pDevINIPData->pDrv->pfnFreeBuf(g_pDevINIPData->pDrv, pSgBuf);
277
278	#if ETH_PAD_SIZE
279	lwip_pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
280	#endif
281	}
282
283	g_pDevINIPData->pDrv->pfnEndXmit(g_pDevINIPData->pDrv);
284	}
285
286	err_t lrc = ERR_OK;
287	if (RT_FAILURE(rc))
288	lrc = ERR_IF;
289	LogFlow(("%s: return %d (vbox: %Rrc)\n", __FUNCTION__, rc, lrc));
290	return lrc;
291	}
292
293	/**
294	* Implements the ethernet interface backend initialization for lwIP.
295	*
296	* @returns lwIP error code
297	* @param netif Interface to configure.
298	*/
299	static DECLCALLBACK(err_t) devINIPInterface(struct netif *netif)
300	{
301	LogFlow(("%s: netif=%p\n", __FUNCTION__, netif));
302	Assert(g_pDevINIPData != NULL);
303	netif->state = g_pDevINIPData;
304	netif->hwaddr_len = sizeof(g_pDevINIPData->MAC);
305	memcpy(netif->hwaddr, &g_pDevINIPData->MAC, sizeof(g_pDevINIPData->MAC));
306	netif->mtu = DEVINIP_MAX_FRAME;
307	netif->flags = NETIF_FLAG_BROADCAST;
308	#ifdef VBOX_WITH_NEW_LWIP
309	/** @todo why explicit ARP routing required for 1.2.0 case? */
310	netif->flags \|= NETIF_FLAG_ETHARP;
311	netif->flags \|= NETIF_FLAG_ETHERNET;
312	/* Note! We always assign link-local IPv6 address */
313	netif_create_ip6_linklocal_address(netif, 0);
314	netif_ip6_addr_set_state(netif, 0, IP6_ADDR_VALID);
315	netif->output_ip6 = ethip6_output;
316	netif->ip6_autoconfig_enabled=1;
317	LogFunc(("netif: ipv6:%RTnaipv6\n", &netif->ip6_addr[0].addr[0]));
318	netif->output = lwip_etharp_output;
319	#else
320	netif->output = devINIPOutput;
321	#endif
322	netif->linkoutput = devINIPOutputRaw;
323
324	lwip_etharp_init();
325	TMTimerSetMillies(g_pDevINIPData->ARPTimer, ARP_TMR_INTERVAL);
326	LogFlow(("%s: success\n", __FUNCTION__));
327	return ERR_OK;
328	}
329
330	/**
331	* Parses CFGM parameters related to network connection
332	*/
333	static DECLCALLBACK(int) devINIPNetworkConfiguration(PPDMDEVINS pDevIns, PDEVINTNETIP pThis, PCFGMNODE pCfg)
334	{
335	int rc = VINF_SUCCESS;
336	rc = CFGMR3QueryStringAlloc(pCfg, "IP", &pThis->pszIP);
337	if (RT_FAILURE(rc))
338	{
339	PDMDEV_SET_ERROR(pDevIns, rc,
340	N_("Configuration error: Failed to get the \"IP\" value"));
341	/* @todo: perhaps we should panic if IPv4 address isn't specify, with assumtion that
342	* ISCSI target specified in IPv6 form.
343	*/
344	return rc;
345	}
346
347	rc = CFGMR3QueryStringAlloc(pCfg, "Netmask", &pThis->pszNetmask);
348	if (RT_FAILURE(rc))
349	{
350	PDMDEV_SET_ERROR(pDevIns, rc,
351	N_("Configuration error: Failed to get the \"Netmask\" value"));
352	return rc;
353	}
354	rc = CFGMR3QueryStringAlloc(pCfg, "Gateway", &pThis->pszGateway);
355	if ( RT_FAILURE(rc)
356	&& rc != VERR_CFGM_VALUE_NOT_FOUND)
357	{
358	PDMDEV_SET_ERROR(pDevIns, rc,
359	N_("Configuration error: Failed to get the \"Gateway\" value"));
360	return rc;
361	}
362	return VINF_SUCCESS;
363	}
364
365	/**
366	* Wait until data can be received.
367	*
368	* @returns VBox status code. VINF_SUCCESS means there is at least one receive descriptor available.
369	* @param pInterface PDM network port interface pointer.
370	* @param cMillies Number of milliseconds to wait. 0 means return immediately.
371	*/
372	static DECLCALLBACK(int) devINIPNetworkDown_WaitInputAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
373	{
374	LogFlow(("%s: pInterface=%p\n", __FUNCTION__, pInterface));
375	LogFlow(("%s: return VINF_SUCCESS\n", __FUNCTION__));
376	return VINF_SUCCESS;
377	}
378
379	/**
380	* Receive data and pass it to lwIP for processing.
381	*
382	* @returns VBox status code
383	* @param pInterface PDM network port interface pointer.
384	* @param pvBuf Pointer to frame data.
385	* @param cb Frame size.
386	*/
387	static DECLCALLBACK(int) devINIPNetworkDown_Input(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
388	{
389	const uint8_t pbBuf = (const uint8_t )pvBuf;
390	size_t len = cb;
391	const struct eth_hdr *ethhdr;
392	struct pbuf p, q;
393	int rc = VINF_SUCCESS;
394
395	LogFlow(("%s: pInterface=%p pvBuf=%p cb=%lu\n", __FUNCTION__, pInterface, pvBuf, cb));
396	Assert(g_pDevINIPData);
397	Assert(g_pDevINIPData->pDrv);
398
399	/* Silently ignore packets being received while lwIP isn't set up. */
400	if (!g_pDevINIPData)
401	{
402	LogFlow(("%s: return %Rrc (no global)\n", __FUNCTION__, rc));
403	return VINF_SUCCESS;
404	}
405
406	#if ETH_PAD_SIZE
407	len += ETH_PAD_SIZE; /* allow room for Ethernet padding */
408	#endif
409
410	/* We allocate a pbuf chain of pbufs from the pool. */
411	p = lwip_pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
412	if (p != NULL)
413	{
414	#if ETH_PAD_SIZE
415	lwip_pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
416	#endif
417
418	for (q = p; q != NULL; q = q->next)
419	{
420	/* Fill the buffers, and clean out unused buffer space. */
421	memcpy(q->payload, pbBuf, RT_MIN(cb, q->len));
422	pbBuf += RT_MIN(cb, q->len);
423	if (q->len > cb)
424	memset(((uint8_t *)q->payload) + cb, '\0', q->len - cb);
425	cb -= RT_MIN(cb, q->len);
426	}
427
428	ethhdr = (const struct eth_hdr *)p->payload;
429	struct netif *iface = &g_pDevINIPData->IntNetIF;
430	err_t lrc;
431	#ifndef VBOX_WITH_NEW_LWIP
432	switch (htons(ethhdr->type))
433	{
434	case ETHTYPE_IP: /* IP packet */
435	lwip_pbuf_header(p, -(ssize_t)sizeof(struct eth_hdr));
436	lrc = iface->input(p, iface);
437	if (lrc)
438	rc = VERR_NET_IO_ERROR;
439	break;
440	case ETHTYPE_ARP: /* ARP packet */
441	lwip_etharp_arp_input(iface, (struct eth_addr *)iface->hwaddr, p);
442	break;
443	default:
444	lwip_pbuf_free(p);
445	}
446	#else
447	/* We've setup flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET
448	so this should be thread-safe. */
449	tcpip_input(p,iface);
450	#endif
451	}
452
453	out:
454	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
455	return rc;
456	}
457
458	/**
459	* @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
460	*/
461	static DECLCALLBACK(void) devINIPNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
462	{
463	NOREF(pInterface);
464	}
465
466
467	/**
468	* Signals the end of lwIP TCPIP initialization.
469	*
470	* @param arg opaque argument, here the pointer to the semaphore.
471	*/
472	static DECLCALLBACK(void) devINIPTcpipInitDone(void *arg)
473	{
474	sys_sem_t sem = (sys_sem_t )arg;
475	#ifndef VBOX_WITH_NEW_LWIP
476	lwip_sys_sem_signal(*sem);
477	#else
478	lwip_sys_sem_signal(sem);
479	#endif
480	}
481
482
483	/**
484	* Gets the current Media Access Control (MAC) address.
485	*
486	* @returns VBox status code.
487	* @param pInterface Pointer to the interface structure containing the called function pointer.
488	* @param pMac Where to store the MAC address.
489	* @thread EMT
490	*/
491	static DECLCALLBACK(int) devINIPGetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
492	{
493	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
494	memcpy(pMac, pThis->MAC.au8, sizeof(RTMAC));
495	return VINF_SUCCESS;
496	}
497
498	/**
499	* Gets the new link state.
500	*
501	* @returns The current link state.
502	* @param pInterface Pointer to the interface structure containing the called function pointer.
503	* @thread EMT
504	*/
505	static DECLCALLBACK(PDMNETWORKLINKSTATE) devINIPGetLinkState(PPDMINETWORKCONFIG pInterface)
506	{
507	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
508	if (pThis->fLnkUp)
509	return PDMNETWORKLINKSTATE_UP;
510	return PDMNETWORKLINKSTATE_DOWN;
511	}
512
513
514	/**
515	* Sets the new link state.
516	*
517	* @returns VBox status code.
518	* @param pInterface Pointer to the interface structure containing the called function pointer.
519	* @param enmState The new link state
520	*/
521	static DECLCALLBACK(int) devINIPSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
522	{
523	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, INetworkConfig);
524	bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
525
526	if (fNewUp != pThis->fLnkUp)
527	{
528	if (fNewUp)
529	{
530	LogFlowFunc(("Link is up\n"));
531	pThis->fLnkUp = true;
532	}
533	else
534	{
535	LogFlowFunc(("Link is down\n"));
536	pThis->fLnkUp = false;
537	}
538	if (pThis->pDrv)
539	pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, enmState);
540	}
541	return VINF_SUCCESS;
542	}
543
544	/* -=-=-=-=- PDMIBASE -=-=-=-=- */
545
546	/**
547	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
548	*/
549	static DECLCALLBACK(void *) devINIPQueryInterface(PPDMIBASE pInterface,
550	const char *pszIID)
551	{
552	PDEVINTNETIP pThis = RT_FROM_MEMBER(pInterface, DEVINTNETIP, IBase);
553	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
554	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThis->INetworkDown);
555	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThis->INetworkConfig);
556	return NULL;
557	}
558
559	/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
560
561	/**
562	* Destruct a device instance.
563	*
564	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
565	* resources can be freed correctly.
566	*
567	* @returns VBox status.
568	* @param pDevIns The device instance data.
569	*/
570	static DECLCALLBACK(int) devINIPDestruct(PPDMDEVINS pDevIns)
571	{
572	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
573
574	LogFlow(("%s: pDevIns=%p\n", __FUNCTION__, pDevIns));
575	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
576
577	if (g_pDevINIPData != NULL)
578	{
579	netif_set_down(&pThis->IntNetIF);
580	netif_remove(&pThis->IntNetIF);
581	tcpip_terminate();
582	#ifndef VBOX_WITH_NEW_LWIP
583	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
584	lwip_sys_sem_free(pThis->LWIPTcpInitSem);
585	#else
586	lwip_sys_sem_wait(&pThis->LWIPTcpInitSem, 0);
587	lwip_sys_sem_free(&pThis->LWIPTcpInitSem);
588	#endif
589	}
590
591	MMR3HeapFree(pThis->pszIP);
592	pThis->pszIP = NULL;
593	MMR3HeapFree(pThis->pszNetmask);
594	pThis->pszNetmask = NULL;
595	MMR3HeapFree(pThis->pszGateway);
596	pThis->pszGateway = NULL;
597
598	LogFlow(("%s: success\n", __FUNCTION__));
599	return VINF_SUCCESS;
600	}
601
602
603	/**
604	* @interface_method_impl{PDMDEVREG,pfnConstruct}
605	*/
606	static DECLCALLBACK(int) devINIPConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
607	{
608	PDEVINTNETIP pThis = PDMINS_2_DATA(pDevIns, PDEVINTNETIP);
609	int rc = VINF_SUCCESS;
610	#ifdef VBOX_WITH_NEW_LWIP
611	err_t errRc = ERR_OK;
612	#endif
613	LogFlow(("%s: pDevIns=%p iInstance=%d pCfg=%p\n", __FUNCTION__,
614	pDevIns, iInstance, pCfg));
615
616	Assert(iInstance == 0);
617	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
618
619	/*
620	* Validate the config.
621	*/
622	if (!CFGMR3AreValuesValid(pCfg, "MAC\0IP\0"
623	#ifdef VBOX_WITH_NEW_LWIP
624	"IPv6\0"
625	#endif
626	"Netmask\0Gateway\0"))
627	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
628	N_("Unknown Internal Networking IP configuration option"));
629
630	/*
631	* Init the static parts.
632	*/
633	pThis->pszIP = NULL;
634	pThis->pszNetmask = NULL;
635	pThis->pszGateway = NULL;
636	/* Pointer to device instance */
637	pThis->pDevIns = pDevIns;
638	/* IBase */
639	pThis->IBase.pfnQueryInterface = devINIPQueryInterface;
640	/* INetworkDown */
641	pThis->INetworkDown.pfnWaitReceiveAvail = devINIPNetworkDown_WaitInputAvail;
642	pThis->INetworkDown.pfnReceive = devINIPNetworkDown_Input;
643	pThis->INetworkDown.pfnXmitPending = devINIPNetworkDown_XmitPending;
644	/* INetworkConfig */
645	pThis->INetworkConfig.pfnGetMac = devINIPGetMac;
646	pThis->INetworkConfig.pfnGetLinkState = devINIPGetLinkState;
647	pThis->INetworkConfig.pfnSetLinkState = devINIPSetLinkState;
648
649	/*
650	* Get the configuration settings.
651	*/
652	rc = CFGMR3QueryBytes(pCfg, "MAC", &pThis->MAC, sizeof(pThis->MAC));
653	if (rc == VERR_CFGM_NOT_BYTES)
654	{
655	char szMAC[64];
656	rc = CFGMR3QueryString(pCfg, "MAC", &szMAC[0], sizeof(szMAC));
657	if (RT_SUCCESS(rc))
658	{
659	char *macStr = &szMAC[0];
660	char pMac = (char )&pThis->MAC;
661	for (uint32_t i = 0; i < 6; i++)
662	{
663	if ( !macStr \|\| !(macStr + 1)
664	\|\| macStr == ':' \|\| (macStr + 1) == ':')
665	return PDMDEV_SET_ERROR(pDevIns,
666	VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
667	N_("Configuration error: Invalid \"MAC\" value"));
668	char c1 = *macStr++ - '0';
669	if (c1 > 9)
670	c1 -= 7;
671	char c2 = *macStr++ - '0';
672	if (c2 > 9)
673	c2 -= 7;
674	*pMac++ = ((c1 & 0x0f) << 4) \| (c2 & 0x0f);
675	if (i != 5 && *macStr == ':')
676	macStr++;
677	}
678	}
679	}
680	if (RT_FAILURE(rc))
681	return PDMDEV_SET_ERROR(pDevIns, rc,
682	N_("Configuration error: Failed to get the \"MAC\" value"));
683	rc = devINIPNetworkConfiguration(pDevIns, pThis, pCfg);
684	AssertLogRelRCReturn(rc, rc);
685
686	/*
687	* Attach driver and query the network connector interface.
688	*/
689	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Network Port");
690	if (RT_FAILURE(rc))
691	{
692	pThis->pDrvBase = NULL;
693	pThis->pDrv = NULL;
694	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Error attaching device below us"));
695	}
696	pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
697	AssertMsgReturn(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"), VERR_PDM_MISSING_INTERFACE_BELOW);
698
699	struct ip_addr ipaddr, netmask, gw;
700	struct in_addr ip;
701
702	if (!inet_aton(pThis->pszIP, &ip))
703	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
704	N_("Configuration error: Invalid \"IP\" value"));
705	memcpy(&ipaddr, &ip, sizeof(ipaddr));
706	if (!inet_aton(pThis->pszNetmask, &ip))
707	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
708	N_("Configuration error: Invalid \"Netmask\" value"));
709	memcpy(&netmask, &ip, sizeof(netmask));
710	if (pThis->pszGateway)
711	{
712	if (!inet_aton(pThis->pszGateway, &ip))
713	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
714	N_("Configuration error: Invalid \"Gateway\" value"));
715	memcpy(&gw, &ip, sizeof(gw));
716	}
717	else
718	{
719	inet_aton(pThis->pszIP, &ip);
720	memcpy(&gw, &ip, sizeof(gw));
721	}
722
723	/*
724	* Initialize lwIP.
725	*/
726	lwip_stats_init();
727	lwip_sys_init();
728	#if MEM_LIBC_MALLOC == 0
729	lwip_mem_init();
730	#endif
731	lwip_memp_init();
732	lwip_pbuf_init();
733	lwip_netif_init();
734	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPARPTimer, pThis,
735	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP ARP", &pThis->ARPTimer);
736	AssertRCReturn(rc, rc);
737	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPFastTimer, pThis,
738	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP fast TCP", &pThis->TCPFastTimer);
739	AssertRCReturn(rc, rc);
740	TMTimerSetMillies(pThis->TCPFastTimer, TCP_FAST_INTERVAL);
741	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, devINIPTCPSlowTimer, pThis,
742	TMTIMER_FLAGS_NO_CRIT_SECT, "lwIP slow TCP", &pThis->TCPSlowTimer);
743	AssertRCReturn(rc, rc);
744	TMTimerSetMillies(pThis->TCPFastTimer, TCP_SLOW_INTERVAL);
745	#ifndef VBOX_WITH_NEW_LWIP
746	pThis->LWIPTcpInitSem = lwip_sys_sem_new(0);
747	{
748	lwip_tcpip_init(devINIPTcpipInitDone, &pThis->LWIPTcpInitSem);
749	lwip_sys_sem_wait(pThis->LWIPTcpInitSem);
750	}
751	#else
752	errRc = lwip_sys_sem_new(&pThis->LWIPTcpInitSem, 0);
753	/* VERR_INTERNAL_ERROR perhaps should be replaced with right error code */
754	AssertReturn(errRc == ERR_OK, VERR_INTERNAL_ERROR);
755	{
756	lwip_tcpip_init(devINIPTcpipInitDone, &pThis->LWIPTcpInitSem);
757	lwip_sys_sem_wait(&pThis->LWIPTcpInitSem, 0);
758	}
759	#endif
760
761	/*
762	* Set up global pointer to interface data.
763	*/
764	g_pDevINIPData = pThis;
765
766	struct netif *ret;
767	pThis->IntNetIF.name[0] = 'I';
768	pThis->IntNetIF.name[1] = 'N';
769	ret = netif_add(&pThis->IntNetIF, &ipaddr, &netmask, &gw, NULL,
770	devINIPInterface, lwip_tcpip_input);
771	if (!ret)
772	return PDMDEV_SET_ERROR(pDevIns, VERR_NET_NO_NETWORK, N_("netif_add failed"));
773
774	lwip_netif_set_default(&pThis->IntNetIF);
775	lwip_netif_set_up(&pThis->IntNetIF);
776
777	/* link hack */
778	pThis->pLinkHack = g_pDevINILinkHack;
779
780	LogFlow(("%s: return %Rrc\n", __FUNCTION__, rc));
781	return rc;
782	}
783
784
785	/**
786	* Query whether lwIP is initialized or not. Since there is only a single
787	* instance of this device ever for a VM, it can be a global function.
788	*
789	* @returns True if lwIP is initialized.
790	*/
791	bool DevINIPConfigured(void)
792	{
793	return g_pDevINIPData != NULL;
794	}
795
796
797	/**
798	* Internal network IP stack device registration record.
799	*/
800	const PDMDEVREG g_DeviceINIP =
801	{
802	/* u32Version */
803	PDM_DEVREG_VERSION,
804	/* szName */
805	"IntNetIP",
806	/* szRCMod/szR0Mod */
807	"",
808	"",
809	/* pszDescription */
810	"Internal Network IP stack device",
811	/* fFlags */
812	PDM_DEVREG_FLAGS_DEFAULT_BITS,
813	/* fClass. As this is used by the storage devices, it must come earlier. */
814	PDM_DEVREG_CLASS_VMM_DEV,
815	/* cMaxInstances */
816	1,
817	/* cbInstance */
818	sizeof(DEVINTNETIP),
819	/* pfnConstruct */
820	devINIPConstruct,
821	/* pfnDestruct */
822	devINIPDestruct,
823	/* pfnRelocate */
824	NULL,
825	/* pfnMemSetup */
826	NULL,
827	/* pfnPowerOn */
828	NULL,
829	/* pfnReset */
830	NULL,
831	/* pfnSuspend */
832	NULL,
833	/* pfnResume */
834	NULL,
835	/* pfnAttach */
836	NULL,
837	/* pfnDetach */
838	NULL,
839	/* pfnQueryInterface */
840	NULL,
841	/* pfnInitComplete */
842	NULL,
843	/* pfnPowerOff */
844	NULL,
845	/* pfnSoftReset */
846	NULL,
847	/* u32VersionEnd */
848	PDM_DEVREG_VERSION
849	};

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source: vbox/trunk/src/VBox/Devices/Network/DevINIP.cpp@ 45761

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