VirtualBox

source: vbox/trunk/src/VBox/Devices/Network/DrvIntNet.cpp@ 69922

Last change on this file since 69922 was 69500, checked in by vboxsync, 7 years ago

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1/* $Id: DrvIntNet.cpp 69500 2017-10-28 15:14:05Z vboxsync $ */
2/** @file
3 * DrvIntNet - Internal network transport driver.
4 */
5
6/*
7 * Copyright (C) 2006-2017 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_DRV_INTNET
23#include <VBox/vmm/pdmdrv.h>
24#include <VBox/vmm/pdmnetinline.h>
25#include <VBox/vmm/pdmnetifs.h>
26#include <VBox/vmm/cfgm.h>
27#include <VBox/intnet.h>
28#include <VBox/intnetinline.h>
29#include <VBox/vmm/vmm.h>
30#include <VBox/sup.h>
31#include <VBox/err.h>
32
33#include <VBox/param.h>
34#include <VBox/log.h>
35#include <iprt/asm.h>
36#include <iprt/assert.h>
37#include <iprt/ctype.h>
38#include <iprt/memcache.h>
39#include <iprt/net.h>
40#include <iprt/semaphore.h>
41#include <iprt/string.h>
42#include <iprt/time.h>
43#include <iprt/thread.h>
44#include <iprt/uuid.h>
45#if defined(RT_OS_DARWIN) && defined(IN_RING3)
46# include <iprt/system.h>
47#endif
48
49#include "VBoxDD.h"
50
51
52/*********************************************************************************************************************************
53* Defined Constants And Macros *
54*********************************************************************************************************************************/
55/** Enables the ring-0 part. */
56#define VBOX_WITH_DRVINTNET_IN_R0
57
58
59/*********************************************************************************************************************************
60* Structures and Typedefs *
61*********************************************************************************************************************************/
62/**
63 * The state of the asynchronous thread.
64 */
65typedef enum RECVSTATE
66{
67 /** The thread is suspended. */
68 RECVSTATE_SUSPENDED = 1,
69 /** The thread is running. */
70 RECVSTATE_RUNNING,
71 /** The thread must (/has) terminate. */
72 RECVSTATE_TERMINATE,
73 /** The usual 32-bit type blowup. */
74 RECVSTATE_32BIT_HACK = 0x7fffffff
75} RECVSTATE;
76
77/**
78 * Internal networking driver instance data.
79 *
80 * @implements PDMINETWORKUP
81 */
82typedef struct DRVINTNET
83{
84 /** The network interface. */
85 PDMINETWORKUP INetworkUpR3;
86 /** The network interface. */
87 R3PTRTYPE(PPDMINETWORKDOWN) pIAboveNet;
88 /** The network config interface.
89 * Can (in theory at least) be NULL. */
90 R3PTRTYPE(PPDMINETWORKCONFIG) pIAboveConfigR3;
91 /** Pointer to the driver instance (ring-3). */
92 PPDMDRVINSR3 pDrvInsR3;
93 /** Pointer to the communication buffer (ring-3). */
94 R3PTRTYPE(PINTNETBUF) pBufR3;
95 /** Ring-3 base interface for the ring-0 context. */
96 PDMIBASER0 IBaseR0;
97 /** Ring-3 base interface for the raw-mode context. */
98 PDMIBASERC IBaseRC;
99 RTR3PTR R3PtrAlignment;
100
101 /** The network interface for the ring-0 context. */
102 PDMINETWORKUPR0 INetworkUpR0;
103 /** Pointer to the driver instance (ring-0). */
104 PPDMDRVINSR0 pDrvInsR0;
105 /** Pointer to the communication buffer (ring-0). */
106 R0PTRTYPE(PINTNETBUF) pBufR0;
107
108 /** The network interface for the raw-mode context. */
109 PDMINETWORKUPRC INetworkUpRC;
110 /** Pointer to the driver instance. */
111 PPDMDRVINSRC pDrvInsRC;
112 RTRCPTR RCPtrAlignment;
113
114 /** The transmit lock. */
115 PDMCRITSECT XmitLock;
116 /** Interface handle. */
117 INTNETIFHANDLE hIf;
118 /** The receive thread state. */
119 RECVSTATE volatile enmRecvState;
120 /** The receive thread. */
121 RTTHREAD hRecvThread;
122 /** The event semaphore that the receive thread waits on. */
123 RTSEMEVENT hRecvEvt;
124 /** The transmit thread. */
125 PPDMTHREAD pXmitThread;
126 /** The event semaphore that the transmit thread waits on. */
127 SUPSEMEVENT hXmitEvt;
128 /** The support driver session handle. */
129 PSUPDRVSESSION pSupDrvSession;
130 /** Scatter/gather descriptor cache. */
131 RTMEMCACHE hSgCache;
132 /** Set if the link is down.
133 * When the link is down all incoming packets will be dropped. */
134 bool volatile fLinkDown;
135 /** Set when the xmit thread has been signalled. (atomic) */
136 bool volatile fXmitSignalled;
137 /** Set if the transmit thread the one busy transmitting. */
138 bool volatile fXmitOnXmitThread;
139 /** The xmit thread should process the ring ASAP. */
140 bool fXmitProcessRing;
141 /** Set if data transmission should start immediately and deactivate
142 * as late as possible. */
143 bool fActivateEarlyDeactivateLate;
144 /** Padding. */
145 bool afReserved[HC_ARCH_BITS == 64 ? 3 : 3];
146 /** Scratch space for holding the ring-0 scatter / gather descriptor.
147 * The PDMSCATTERGATHER::fFlags member is used to indicate whether it is in
148 * use or not. Always accessed while owning the XmitLock. */
149 union
150 {
151 PDMSCATTERGATHER Sg;
152 uint8_t padding[8 * sizeof(RTUINTPTR)];
153 } u;
154 /** The network name. */
155 char szNetwork[INTNET_MAX_NETWORK_NAME];
156
157 /** Number of GSO packets sent. */
158 STAMCOUNTER StatSentGso;
159 /** Number of GSO packets received. */
160 STAMCOUNTER StatReceivedGso;
161 /** Number of packets send from ring-0. */
162 STAMCOUNTER StatSentR0;
163 /** The number of times we've had to wake up the xmit thread to continue the
164 * ring-0 job. */
165 STAMCOUNTER StatXmitWakeupR0;
166 /** The number of times we've had to wake up the xmit thread to continue the
167 * ring-3 job. */
168 STAMCOUNTER StatXmitWakeupR3;
169 /** The times the xmit thread has been told to process the ring. */
170 STAMCOUNTER StatXmitProcessRing;
171#ifdef VBOX_WITH_STATISTICS
172 /** Profiling packet transmit runs. */
173 STAMPROFILE StatTransmit;
174 /** Profiling packet receive runs. */
175 STAMPROFILEADV StatReceive;
176#endif /* VBOX_WITH_STATISTICS */
177#ifdef LOG_ENABLED
178 /** The nano ts of the last transfer. */
179 uint64_t u64LastTransferTS;
180 /** The nano ts of the last receive. */
181 uint64_t u64LastReceiveTS;
182#endif
183} DRVINTNET;
184AssertCompileMemberAlignment(DRVINTNET, XmitLock, 8);
185AssertCompileMemberAlignment(DRVINTNET, StatSentGso, 8);
186/** Pointer to instance data of the internal networking driver. */
187typedef DRVINTNET *PDRVINTNET;
188
189/**
190 * Config value to flag translation structure.
191 */
192typedef struct DRVINTNETFLAG
193{
194 /** The value. */
195 const char *pszChoice;
196 /** The corresponding flag. */
197 uint32_t fFlag;
198} DRVINTNETFLAG;
199/** Pointer to a const flag value translation. */
200typedef DRVINTNETFLAG const *PCDRVINTNETFLAG;
201
202
203#ifdef IN_RING3
204
205
206/**
207 * Updates the MAC address on the kernel side.
208 *
209 * @returns VBox status code.
210 * @param pThis The driver instance.
211 */
212static int drvR3IntNetUpdateMacAddress(PDRVINTNET pThis)
213{
214 if (!pThis->pIAboveConfigR3)
215 return VINF_SUCCESS;
216
217 INTNETIFSETMACADDRESSREQ SetMacAddressReq;
218 SetMacAddressReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
219 SetMacAddressReq.Hdr.cbReq = sizeof(SetMacAddressReq);
220 SetMacAddressReq.pSession = NIL_RTR0PTR;
221 SetMacAddressReq.hIf = pThis->hIf;
222 int rc = pThis->pIAboveConfigR3->pfnGetMac(pThis->pIAboveConfigR3, &SetMacAddressReq.Mac);
223 if (RT_SUCCESS(rc))
224 rc = PDMDrvHlpSUPCallVMMR0Ex(pThis->pDrvInsR3, VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS,
225 &SetMacAddressReq, sizeof(SetMacAddressReq));
226
227 Log(("drvR3IntNetUpdateMacAddress: %.*Rhxs rc=%Rrc\n", sizeof(SetMacAddressReq.Mac), &SetMacAddressReq.Mac, rc));
228 return rc;
229}
230
231
232/**
233 * Sets the kernel interface active or inactive.
234 *
235 * Worker for poweron, poweroff, suspend and resume.
236 *
237 * @returns VBox status code.
238 * @param pThis The driver instance.
239 * @param fActive The new state.
240 */
241static int drvR3IntNetSetActive(PDRVINTNET pThis, bool fActive)
242{
243 if (!pThis->pIAboveConfigR3)
244 return VINF_SUCCESS;
245
246 INTNETIFSETACTIVEREQ SetActiveReq;
247 SetActiveReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
248 SetActiveReq.Hdr.cbReq = sizeof(SetActiveReq);
249 SetActiveReq.pSession = NIL_RTR0PTR;
250 SetActiveReq.hIf = pThis->hIf;
251 SetActiveReq.fActive = fActive;
252 int rc = PDMDrvHlpSUPCallVMMR0Ex(pThis->pDrvInsR3, VMMR0_DO_INTNET_IF_SET_ACTIVE,
253 &SetActiveReq, sizeof(SetActiveReq));
254
255 Log(("drvR3IntNetSetActive: fActive=%d rc=%Rrc\n", fActive, rc));
256 AssertRC(rc);
257 return rc;
258}
259
260#endif /* IN_RING3 */
261
262/* -=-=-=-=- PDMINETWORKUP -=-=-=-=- */
263
264#ifndef IN_RING3
265/**
266 * Helper for signalling the xmit thread.
267 *
268 * @returns VERR_TRY_AGAIN (convenience).
269 * @param pThis The instance data..
270 */
271DECLINLINE(int) drvR0IntNetSignalXmit(PDRVINTNET pThis)
272{
273 /// @todo if (!ASMAtomicXchgBool(&pThis->fXmitSignalled, true)) - needs careful optimizing.
274 {
275 int rc = SUPSemEventSignal(pThis->pSupDrvSession, pThis->hXmitEvt);
276 AssertRC(rc);
277 STAM_REL_COUNTER_INC(&pThis->CTX_SUFF(StatXmitWakeup));
278 }
279 return VERR_TRY_AGAIN;
280}
281#endif /* !IN_RING3 */
282
283
284/**
285 * Helper for processing the ring-0 consumer side of the xmit ring.
286 *
287 * The caller MUST own the xmit lock.
288 *
289 * @returns Status code from IntNetR0IfSend, except for VERR_TRY_AGAIN.
290 * @param pThis The instance data..
291 */
292DECLINLINE(int) drvIntNetProcessXmit(PDRVINTNET pThis)
293{
294 Assert(PDMCritSectIsOwner(&pThis->XmitLock));
295
296#ifdef IN_RING3
297 INTNETIFSENDREQ SendReq;
298 SendReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
299 SendReq.Hdr.cbReq = sizeof(SendReq);
300 SendReq.pSession = NIL_RTR0PTR;
301 SendReq.hIf = pThis->hIf;
302 int rc = PDMDrvHlpSUPCallVMMR0Ex(pThis->pDrvInsR3, VMMR0_DO_INTNET_IF_SEND, &SendReq, sizeof(SendReq));
303#else
304 int rc = IntNetR0IfSend(pThis->hIf, pThis->pSupDrvSession);
305 if (rc == VERR_TRY_AGAIN)
306 {
307 ASMAtomicUoWriteBool(&pThis->fXmitProcessRing, true);
308 drvR0IntNetSignalXmit(pThis);
309 rc = VINF_SUCCESS;
310 }
311#endif
312 return rc;
313}
314
315
316
317/**
318 * @interface_method_impl{PDMINETWORKUP,pfnBeginXmit}
319 */
320PDMBOTHCBDECL(int) drvIntNetUp_BeginXmit(PPDMINETWORKUP pInterface, bool fOnWorkerThread)
321{
322 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, CTX_SUFF(INetworkUp));
323#ifndef IN_RING3
324 Assert(!fOnWorkerThread);
325#endif
326
327 int rc = PDMCritSectTryEnter(&pThis->XmitLock);
328 if (RT_SUCCESS(rc))
329 {
330 if (fOnWorkerThread)
331 {
332 ASMAtomicUoWriteBool(&pThis->fXmitOnXmitThread, true);
333 ASMAtomicWriteBool(&pThis->fXmitSignalled, false);
334 }
335 }
336 else if (rc == VERR_SEM_BUSY)
337 {
338 /** @todo Does this actually make sense if the other dude is an EMT and so
339 * forth? I seriously think this is ring-0 only...
340 * We might end up waking up the xmit thread unnecessarily here, even when in
341 * ring-0... This needs some more thought and optimizations when the ring-0 bits
342 * are working. */
343#ifdef IN_RING3
344 if ( !fOnWorkerThread
345 /*&& !ASMAtomicUoReadBool(&pThis->fXmitOnXmitThread)
346 && ASMAtomicCmpXchgBool(&pThis->fXmitSignalled, true, false)*/)
347 {
348 rc = SUPSemEventSignal(pThis->pSupDrvSession, pThis->hXmitEvt);
349 AssertRC(rc);
350 }
351 rc = VERR_TRY_AGAIN;
352#else /* IN_RING0 */
353 rc = drvR0IntNetSignalXmit(pThis);
354#endif /* IN_RING0 */
355 }
356 return rc;
357}
358
359
360/**
361 * @interface_method_impl{PDMINETWORKUP,pfnAllocBuf}
362 */
363PDMBOTHCBDECL(int) drvIntNetUp_AllocBuf(PPDMINETWORKUP pInterface, size_t cbMin,
364 PCPDMNETWORKGSO pGso, PPPDMSCATTERGATHER ppSgBuf)
365{
366 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, CTX_SUFF(INetworkUp));
367 int rc = VINF_SUCCESS;
368 Assert(cbMin < UINT32_MAX / 2);
369 Assert(PDMCritSectIsOwner(&pThis->XmitLock));
370
371 /*
372 * Allocate a S/G descriptor.
373 * This shouldn't normally fail as the NICs usually won't allocate more
374 * than one buffer at a time and the SG gets freed on sending.
375 */
376#ifdef IN_RING3
377 PPDMSCATTERGATHER pSgBuf = (PPDMSCATTERGATHER)RTMemCacheAlloc(pThis->hSgCache);
378 if (!pSgBuf)
379 return VERR_NO_MEMORY;
380#else
381 PPDMSCATTERGATHER pSgBuf = &pThis->u.Sg;
382 if (RT_UNLIKELY(pSgBuf->fFlags != 0))
383 return drvR0IntNetSignalXmit(pThis);
384#endif
385
386 /*
387 * Allocate room in the ring buffer.
388 *
389 * In ring-3 we may have to process the xmit ring before there is
390 * sufficient buffer space since we might have stacked up a few frames to the
391 * trunk while in ring-0. (There is not point of doing this in ring-0.)
392 */
393 PINTNETHDR pHdr = NULL; /* gcc silliness */
394 if (pGso)
395 rc = IntNetRingAllocateGsoFrame(&pThis->CTX_SUFF(pBuf)->Send, (uint32_t)cbMin, pGso,
396 &pHdr, &pSgBuf->aSegs[0].pvSeg);
397 else
398 rc = IntNetRingAllocateFrame(&pThis->CTX_SUFF(pBuf)->Send, (uint32_t)cbMin,
399 &pHdr, &pSgBuf->aSegs[0].pvSeg);
400#ifdef IN_RING3
401 if ( RT_FAILURE(rc)
402 && pThis->CTX_SUFF(pBuf)->cbSend >= cbMin * 2 + sizeof(INTNETHDR))
403 {
404 drvIntNetProcessXmit(pThis);
405 if (pGso)
406 rc = IntNetRingAllocateGsoFrame(&pThis->CTX_SUFF(pBuf)->Send, (uint32_t)cbMin, pGso,
407 &pHdr, &pSgBuf->aSegs[0].pvSeg);
408 else
409 rc = IntNetRingAllocateFrame(&pThis->CTX_SUFF(pBuf)->Send, (uint32_t)cbMin,
410 &pHdr, &pSgBuf->aSegs[0].pvSeg);
411 }
412#endif
413 if (RT_SUCCESS(rc))
414 {
415 /*
416 * Set up the S/G descriptor and return successfully.
417 */
418 pSgBuf->fFlags = PDMSCATTERGATHER_FLAGS_MAGIC | PDMSCATTERGATHER_FLAGS_OWNER_1;
419 pSgBuf->cbUsed = 0;
420 pSgBuf->cbAvailable = cbMin;
421 pSgBuf->pvAllocator = pHdr;
422 pSgBuf->pvUser = pGso ? (PPDMNETWORKGSO)pSgBuf->aSegs[0].pvSeg - 1 : NULL;
423 pSgBuf->cSegs = 1;
424 pSgBuf->aSegs[0].cbSeg = cbMin;
425
426 *ppSgBuf = pSgBuf;
427 return VINF_SUCCESS;
428 }
429
430#ifdef IN_RING3
431 /*
432 * If the above fails, then we're really out of space. There are nobody
433 * competing with us here because of the xmit lock.
434 */
435 rc = VERR_NO_MEMORY;
436 RTMemCacheFree(pThis->hSgCache, pSgBuf);
437
438#else /* IN_RING0 */
439 /*
440 * If the request is reasonable, kick the xmit thread and tell it to
441 * process the xmit ring ASAP.
442 */
443 if (pThis->CTX_SUFF(pBuf)->cbSend >= cbMin * 2 + sizeof(INTNETHDR))
444 {
445 pThis->fXmitProcessRing = true;
446 rc = drvR0IntNetSignalXmit(pThis);
447 }
448 else
449 rc = VERR_NO_MEMORY;
450 pSgBuf->fFlags = 0;
451#endif /* IN_RING0 */
452 return rc;
453}
454
455
456/**
457 * @interface_method_impl{PDMINETWORKUP,pfnFreeBuf}
458 */
459PDMBOTHCBDECL(int) drvIntNetUp_FreeBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf)
460{
461 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, CTX_SUFF(INetworkUp));
462 PINTNETHDR pHdr = (PINTNETHDR)pSgBuf->pvAllocator;
463#ifdef IN_RING0
464 Assert(pSgBuf == &pThis->u.Sg);
465#endif
466 Assert(pSgBuf->fFlags == (PDMSCATTERGATHER_FLAGS_MAGIC | PDMSCATTERGATHER_FLAGS_OWNER_1));
467 Assert(pSgBuf->cbUsed <= pSgBuf->cbAvailable);
468 Assert( pHdr->u8Type == INTNETHDR_TYPE_FRAME
469 || pHdr->u8Type == INTNETHDR_TYPE_GSO);
470 Assert(PDMCritSectIsOwner(&pThis->XmitLock));
471
472 /** @todo LATER: try unalloc the frame. */
473 pHdr->u8Type = INTNETHDR_TYPE_PADDING;
474 IntNetRingCommitFrame(&pThis->CTX_SUFF(pBuf)->Send, pHdr);
475
476#ifdef IN_RING3
477 RTMemCacheFree(pThis->hSgCache, pSgBuf);
478#else
479 pSgBuf->fFlags = 0;
480#endif
481 return VINF_SUCCESS;
482}
483
484
485/**
486 * @interface_method_impl{PDMINETWORKUP,pfnSendBuf}
487 */
488PDMBOTHCBDECL(int) drvIntNetUp_SendBuf(PPDMINETWORKUP pInterface, PPDMSCATTERGATHER pSgBuf, bool fOnWorkerThread)
489{
490 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, CTX_SUFF(INetworkUp));
491 STAM_PROFILE_START(&pThis->StatTransmit, a);
492 RT_NOREF_PV(fOnWorkerThread);
493
494 AssertPtr(pSgBuf);
495 Assert(pSgBuf->fFlags == (PDMSCATTERGATHER_FLAGS_MAGIC | PDMSCATTERGATHER_FLAGS_OWNER_1));
496 Assert(pSgBuf->cbUsed <= pSgBuf->cbAvailable);
497 Assert(PDMCritSectIsOwner(&pThis->XmitLock));
498
499 if (pSgBuf->pvUser)
500 STAM_COUNTER_INC(&pThis->StatSentGso);
501
502 /* Set an FTM checkpoint as this operation changes the state permanently. */
503 PDMDrvHlpFTSetCheckpoint(pThis->CTX_SUFF(pDrvIns), FTMCHECKPOINTTYPE_NETWORK);
504
505 /*
506 * Commit the frame and push it thru the switch.
507 */
508 PINTNETHDR pHdr = (PINTNETHDR)pSgBuf->pvAllocator;
509 IntNetRingCommitFrameEx(&pThis->CTX_SUFF(pBuf)->Send, pHdr, pSgBuf->cbUsed);
510 int rc = drvIntNetProcessXmit(pThis);
511 STAM_PROFILE_STOP(&pThis->StatTransmit, a);
512
513 /*
514 * Free the descriptor and return.
515 */
516#ifdef IN_RING3
517 RTMemCacheFree(pThis->hSgCache, pSgBuf);
518#else
519 STAM_REL_COUNTER_INC(&pThis->StatSentR0);
520 pSgBuf->fFlags = 0;
521#endif
522 return rc;
523}
524
525
526/**
527 * @interface_method_impl{PDMINETWORKUP,pfnEndXmit}
528 */
529PDMBOTHCBDECL(void) drvIntNetUp_EndXmit(PPDMINETWORKUP pInterface)
530{
531 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, CTX_SUFF(INetworkUp));
532 ASMAtomicUoWriteBool(&pThis->fXmitOnXmitThread, false);
533 PDMCritSectLeave(&pThis->XmitLock);
534}
535
536
537/**
538 * @interface_method_impl{PDMINETWORKUP,pfnSetPromiscuousMode}
539 */
540PDMBOTHCBDECL(void) drvIntNetUp_SetPromiscuousMode(PPDMINETWORKUP pInterface, bool fPromiscuous)
541{
542 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, CTX_SUFF(INetworkUp));
543
544#ifdef IN_RING3
545 INTNETIFSETPROMISCUOUSMODEREQ Req;
546 Req.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
547 Req.Hdr.cbReq = sizeof(Req);
548 Req.pSession = NIL_RTR0PTR;
549 Req.hIf = pThis->hIf;
550 Req.fPromiscuous = fPromiscuous;
551 int rc = PDMDrvHlpSUPCallVMMR0Ex(pThis->pDrvInsR3, VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE, &Req, sizeof(Req));
552#else /* IN_RING0 */
553 int rc = IntNetR0IfSetPromiscuousMode(pThis->hIf, pThis->pSupDrvSession, fPromiscuous);
554#endif /* IN_RING0 */
555
556 LogFlow(("drvIntNetUp_SetPromiscuousMode: fPromiscuous=%RTbool\n", fPromiscuous));
557 AssertRC(rc);
558}
559
560#ifdef IN_RING3
561
562/**
563 * @interface_method_impl{PDMINETWORKUP,pfnNotifyLinkChanged}
564 */
565static DECLCALLBACK(void) drvR3IntNetUp_NotifyLinkChanged(PPDMINETWORKUP pInterface, PDMNETWORKLINKSTATE enmLinkState)
566{
567 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, CTX_SUFF(INetworkUp));
568 bool fLinkDown;
569 switch (enmLinkState)
570 {
571 case PDMNETWORKLINKSTATE_DOWN:
572 case PDMNETWORKLINKSTATE_DOWN_RESUME:
573 fLinkDown = true;
574 break;
575 default:
576 AssertMsgFailed(("enmLinkState=%d\n", enmLinkState));
577 RT_FALL_THRU();
578 case PDMNETWORKLINKSTATE_UP:
579 fLinkDown = false;
580 break;
581 }
582 LogFlow(("drvR3IntNetUp_NotifyLinkChanged: enmLinkState=%d %d->%d\n", enmLinkState, pThis->fLinkDown, fLinkDown));
583 ASMAtomicXchgSize(&pThis->fLinkDown, fLinkDown);
584}
585
586
587/* -=-=-=-=- Transmit Thread -=-=-=-=- */
588
589/**
590 * Async I/O thread for deferred packet transmission.
591 *
592 * @returns VBox status code. Returning failure will naturally terminate the thread.
593 * @param pDrvIns The internal networking driver instance.
594 * @param pThread The thread.
595 */
596static DECLCALLBACK(int) drvR3IntNetXmitThread(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
597{
598 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
599
600 while (pThread->enmState == PDMTHREADSTATE_RUNNING)
601 {
602 /*
603 * Transmit any pending packets.
604 */
605 /** @todo Optimize this. We shouldn't call pfnXmitPending unless asked for.
606 * Also there is no need to call drvIntNetProcessXmit if we also
607 * called pfnXmitPending and send one or more frames. */
608 if (ASMAtomicXchgBool(&pThis->fXmitProcessRing, false))
609 {
610 STAM_REL_COUNTER_INC(&pThis->StatXmitProcessRing);
611 PDMCritSectEnter(&pThis->XmitLock, VERR_IGNORED);
612 drvIntNetProcessXmit(pThis);
613 PDMCritSectLeave(&pThis->XmitLock);
614 }
615
616 pThis->pIAboveNet->pfnXmitPending(pThis->pIAboveNet);
617
618 if (ASMAtomicXchgBool(&pThis->fXmitProcessRing, false))
619 {
620 STAM_REL_COUNTER_INC(&pThis->StatXmitProcessRing);
621 PDMCritSectEnter(&pThis->XmitLock, VERR_IGNORED);
622 drvIntNetProcessXmit(pThis);
623 PDMCritSectLeave(&pThis->XmitLock);
624 }
625
626 /*
627 * Block until we've got something to send or is supposed
628 * to leave the running state.
629 */
630 int rc = SUPSemEventWaitNoResume(pThis->pSupDrvSession, pThis->hXmitEvt, RT_INDEFINITE_WAIT);
631 AssertLogRelMsgReturn(RT_SUCCESS(rc) || rc == VERR_INTERRUPTED, ("%Rrc\n", rc), rc);
632 if (RT_UNLIKELY(pThread->enmState != PDMTHREADSTATE_RUNNING))
633 break;
634
635 }
636
637 /* The thread is being initialized, suspended or terminated. */
638 return VINF_SUCCESS;
639}
640
641
642/**
643 * @copydoc FNPDMTHREADWAKEUPDRV
644 */
645static DECLCALLBACK(int) drvR3IntNetXmitWakeUp(PPDMDRVINS pDrvIns, PPDMTHREAD pThread)
646{
647 RT_NOREF(pThread);
648 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
649 return SUPSemEventSignal(pThis->pSupDrvSession, pThis->hXmitEvt);
650}
651
652
653/* -=-=-=-=- Receive Thread -=-=-=-=- */
654
655/**
656 * Wait for space to become available up the driver/device chain.
657 *
658 * @returns VINF_SUCCESS if space is available.
659 * @returns VERR_STATE_CHANGED if the state changed.
660 * @returns VBox status code on other errors.
661 * @param pThis Pointer to the instance data.
662 */
663static int drvR3IntNetRecvWaitForSpace(PDRVINTNET pThis)
664{
665 LogFlow(("drvR3IntNetRecvWaitForSpace:\n"));
666 STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
667 int rc = pThis->pIAboveNet->pfnWaitReceiveAvail(pThis->pIAboveNet, RT_INDEFINITE_WAIT);
668 STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
669 LogFlow(("drvR3IntNetRecvWaitForSpace: returns %Rrc\n", rc));
670 return rc;
671}
672
673
674/**
675 * Executes async I/O (RUNNING mode).
676 *
677 * @returns VERR_STATE_CHANGED if the state changed.
678 * @returns Appropriate VBox status code (error) on fatal error.
679 * @param pThis The driver instance data.
680 */
681static int drvR3IntNetRecvRun(PDRVINTNET pThis)
682{
683 PPDMDRVINS pDrvIns = pThis->pDrvInsR3;
684 LogFlow(("drvR3IntNetRecvRun: pThis=%p\n", pThis));
685
686 /*
687 * The running loop - processing received data and waiting for more to arrive.
688 */
689 STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
690 PINTNETBUF pBuf = pThis->CTX_SUFF(pBuf);
691 PINTNETRINGBUF pRingBuf = &pBuf->Recv;
692 for (;;)
693 {
694 /*
695 * Process the receive buffer.
696 */
697 PINTNETHDR pHdr;
698 while ((pHdr = IntNetRingGetNextFrameToRead(pRingBuf)) != NULL)
699 {
700 /*
701 * Check the state and then inspect the packet.
702 */
703 if (pThis->enmRecvState != RECVSTATE_RUNNING)
704 {
705 STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
706 LogFlow(("drvR3IntNetRecvRun: returns VERR_STATE_CHANGED (state changed - #0)\n"));
707 return VERR_STATE_CHANGED;
708 }
709
710 Log2(("pHdr=%p offRead=%#x: %.8Rhxs\n", pHdr, pRingBuf->offReadX, pHdr));
711 uint8_t u8Type = pHdr->u8Type;
712 if ( ( u8Type == INTNETHDR_TYPE_FRAME
713 || u8Type == INTNETHDR_TYPE_GSO)
714 && !pThis->fLinkDown)
715 {
716 /*
717 * Check if there is room for the frame and pass it up.
718 */
719 size_t cbFrame = pHdr->cbFrame;
720 int rc = pThis->pIAboveNet->pfnWaitReceiveAvail(pThis->pIAboveNet, 0);
721 if (rc == VINF_SUCCESS)
722 {
723 if (u8Type == INTNETHDR_TYPE_FRAME)
724 {
725 /*
726 * Normal frame.
727 */
728#ifdef LOG_ENABLED
729 if (LogIsEnabled())
730 {
731 uint64_t u64Now = RTTimeProgramNanoTS();
732 LogFlow(("drvR3IntNetRecvRun: %-4d bytes at %llu ns deltas: r=%llu t=%llu\n",
733 cbFrame, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS));
734 pThis->u64LastReceiveTS = u64Now;
735 Log2(("drvR3IntNetRecvRun: cbFrame=%#x\n"
736 "%.*Rhxd\n",
737 cbFrame, cbFrame, IntNetHdrGetFramePtr(pHdr, pBuf)));
738 }
739#endif
740 rc = pThis->pIAboveNet->pfnReceive(pThis->pIAboveNet, IntNetHdrGetFramePtr(pHdr, pBuf), cbFrame);
741 AssertRC(rc);
742
743 /* skip to the next frame. */
744 IntNetRingSkipFrame(pRingBuf);
745 }
746 else
747 {
748 /*
749 * Generic segment offload frame (INTNETHDR_TYPE_GSO).
750 */
751 STAM_COUNTER_INC(&pThis->StatReceivedGso);
752 PCPDMNETWORKGSO pGso = IntNetHdrGetGsoContext(pHdr, pBuf);
753 if (PDMNetGsoIsValid(pGso, cbFrame, cbFrame - sizeof(PDMNETWORKGSO)))
754 {
755 if (!pThis->pIAboveNet->pfnReceiveGso ||
756 RT_FAILURE(pThis->pIAboveNet->pfnReceiveGso(pThis->pIAboveNet,
757 (uint8_t *)(pGso + 1),
758 pHdr->cbFrame - sizeof(PDMNETWORKGSO),
759 pGso)))
760 {
761 /*
762 *
763 * This is where we do the offloading since this NIC
764 * does not support large receive offload (LRO).
765 */
766 cbFrame -= sizeof(PDMNETWORKGSO);
767
768 uint8_t abHdrScratch[256];
769 uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso, cbFrame);
770#ifdef LOG_ENABLED
771 if (LogIsEnabled())
772 {
773 uint64_t u64Now = RTTimeProgramNanoTS();
774 LogFlow(("drvR3IntNetRecvRun: %-4d bytes at %llu ns deltas: r=%llu t=%llu; GSO - %u segs\n",
775 cbFrame, u64Now, u64Now - pThis->u64LastReceiveTS, u64Now - pThis->u64LastTransferTS, cSegs));
776 pThis->u64LastReceiveTS = u64Now;
777 Log2(("drvR3IntNetRecvRun: cbFrame=%#x type=%d cbHdrsTotal=%#x cbHdrsSeg=%#x Hdr1=%#x Hdr2=%#x MMS=%#x\n"
778 "%.*Rhxd\n",
779 cbFrame, pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->offHdr1, pGso->offHdr2, pGso->cbMaxSeg,
780 cbFrame - sizeof(*pGso), pGso + 1));
781 }
782#endif
783 for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
784 {
785 uint32_t cbSegFrame;
786 void *pvSegFrame = PDMNetGsoCarveSegmentQD(pGso, (uint8_t *)(pGso + 1), cbFrame,
787 abHdrScratch, iSeg, cSegs, &cbSegFrame);
788 rc = drvR3IntNetRecvWaitForSpace(pThis);
789 if (RT_FAILURE(rc))
790 {
791 Log(("drvR3IntNetRecvRun: drvR3IntNetRecvWaitForSpace -> %Rrc; iSeg=%u cSegs=%u\n", rc, iSeg, cSegs));
792 break; /* we drop the rest. */
793 }
794 rc = pThis->pIAboveNet->pfnReceive(pThis->pIAboveNet, pvSegFrame, cbSegFrame);
795 AssertRC(rc);
796 }
797 }
798 }
799 else
800 {
801 AssertMsgFailed(("cbFrame=%#x type=%d cbHdrsTotal=%#x cbHdrsSeg=%#x Hdr1=%#x Hdr2=%#x MMS=%#x\n",
802 cbFrame, pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->offHdr1, pGso->offHdr2, pGso->cbMaxSeg));
803 STAM_REL_COUNTER_INC(&pBuf->cStatBadFrames);
804 }
805
806 IntNetRingSkipFrame(pRingBuf);
807 }
808 }
809 else
810 {
811 /*
812 * Wait for sufficient space to become available and then retry.
813 */
814 rc = drvR3IntNetRecvWaitForSpace(pThis);
815 if (RT_FAILURE(rc))
816 {
817 if (rc == VERR_INTERRUPTED)
818 {
819 /*
820 * NIC is going down, likely because the VM is being reset. Skip the frame.
821 */
822 AssertMsg(IntNetIsValidFrameType(pHdr->u8Type), ("Unknown frame type %RX16! offRead=%#x\n", pHdr->u8Type, pRingBuf->offReadX));
823 IntNetRingSkipFrame(pRingBuf);
824 }
825 else
826 {
827 STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
828 LogFlow(("drvR3IntNetRecvRun: returns %Rrc (wait-for-space)\n", rc));
829 return rc;
830 }
831 }
832 }
833 }
834 else
835 {
836 /*
837 * Link down or unknown frame - skip to the next frame.
838 */
839 AssertMsg(IntNetIsValidFrameType(pHdr->u8Type), ("Unknown frame type %RX16! offRead=%#x\n", pHdr->u8Type, pRingBuf->offReadX));
840 IntNetRingSkipFrame(pRingBuf);
841 STAM_REL_COUNTER_INC(&pBuf->cStatBadFrames);
842 }
843 } /* while more received data */
844
845 /*
846 * Wait for data, checking the state before we block.
847 */
848 if (pThis->enmRecvState != RECVSTATE_RUNNING)
849 {
850 STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
851 LogFlow(("drvR3IntNetRecvRun: returns VINF_SUCCESS (state changed - #1)\n"));
852 return VERR_STATE_CHANGED;
853 }
854 INTNETIFWAITREQ WaitReq;
855 WaitReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
856 WaitReq.Hdr.cbReq = sizeof(WaitReq);
857 WaitReq.pSession = NIL_RTR0PTR;
858 WaitReq.hIf = pThis->hIf;
859 WaitReq.cMillies = 30000; /* 30s - don't wait forever, timeout now and then. */
860 STAM_PROFILE_ADV_STOP(&pThis->StatReceive, a);
861 int rc = PDMDrvHlpSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_WAIT, &WaitReq, sizeof(WaitReq));
862 if ( RT_FAILURE(rc)
863 && rc != VERR_TIMEOUT
864 && rc != VERR_INTERRUPTED)
865 {
866 LogFlow(("drvR3IntNetRecvRun: returns %Rrc\n", rc));
867 return rc;
868 }
869 STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
870 }
871}
872
873
874/**
875 * Asynchronous I/O thread for handling receive.
876 *
877 * @returns VINF_SUCCESS (ignored).
878 * @param hThreadSelf Thread handle.
879 * @param pvUser Pointer to a DRVINTNET structure.
880 */
881static DECLCALLBACK(int) drvR3IntNetRecvThread(RTTHREAD hThreadSelf, void *pvUser)
882{
883 RT_NOREF(hThreadSelf);
884 PDRVINTNET pThis = (PDRVINTNET)pvUser;
885 LogFlow(("drvR3IntNetRecvThread: pThis=%p\n", pThis));
886 STAM_PROFILE_ADV_START(&pThis->StatReceive, a);
887
888 /*
889 * The main loop - acting on state.
890 */
891 for (;;)
892 {
893 RECVSTATE enmRecvState = pThis->enmRecvState;
894 switch (enmRecvState)
895 {
896 case RECVSTATE_SUSPENDED:
897 {
898 int rc = RTSemEventWait(pThis->hRecvEvt, 30000);
899 if ( RT_FAILURE(rc)
900 && rc != VERR_TIMEOUT)
901 {
902 LogFlow(("drvR3IntNetRecvThread: returns %Rrc\n", rc));
903 return rc;
904 }
905 break;
906 }
907
908 case RECVSTATE_RUNNING:
909 {
910 int rc = drvR3IntNetRecvRun(pThis);
911 if ( rc != VERR_STATE_CHANGED
912 && RT_FAILURE(rc))
913 {
914 LogFlow(("drvR3IntNetRecvThread: returns %Rrc\n", rc));
915 return rc;
916 }
917 break;
918 }
919
920 default:
921 AssertMsgFailed(("Invalid state %d\n", enmRecvState));
922 RT_FALL_THRU();
923 case RECVSTATE_TERMINATE:
924 LogFlow(("drvR3IntNetRecvThread: returns VINF_SUCCESS\n"));
925 return VINF_SUCCESS;
926 }
927 }
928}
929
930
931/* -=-=-=-=- PDMIBASERC -=-=-=-=- */
932
933/**
934 * @interface_method_impl{PDMIBASERC,pfnQueryInterface}
935 */
936static DECLCALLBACK(RTRCPTR) drvR3IntNetIBaseRC_QueryInterface(PPDMIBASERC pInterface, const char *pszIID)
937{
938 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, IBaseRC);
939
940#if 0
941 PDMIBASERC_RETURN_INTERFACE(pThis->pDrvInsR3, pszIID, PDMINETWORKUP, &pThis->INetworkUpRC);
942#else
943 RT_NOREF(pThis, pszIID);
944#endif
945 return NIL_RTRCPTR;
946}
947
948
949/* -=-=-=-=- PDMIBASER0 -=-=-=-=- */
950
951/**
952 * @interface_method_impl{PDMIBASER0,pfnQueryInterface}
953 */
954static DECLCALLBACK(RTR0PTR) drvR3IntNetIBaseR0_QueryInterface(PPDMIBASER0 pInterface, const char *pszIID)
955{
956 PDRVINTNET pThis = RT_FROM_MEMBER(pInterface, DRVINTNET, IBaseR0);
957#ifdef VBOX_WITH_DRVINTNET_IN_R0
958 PDMIBASER0_RETURN_INTERFACE(pThis->pDrvInsR3, pszIID, PDMINETWORKUP, &pThis->INetworkUpR0);
959#endif
960 return NIL_RTR0PTR;
961}
962
963
964/* -=-=-=-=- PDMIBASE -=-=-=-=- */
965
966/**
967 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
968 */
969static DECLCALLBACK(void *) drvR3IntNetIBase_QueryInterface(PPDMIBASE pInterface, const char *pszIID)
970{
971 PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
972 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
973
974 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
975 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASER0, &pThis->IBaseR0);
976 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASERC, &pThis->IBaseRC);
977 PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKUP, &pThis->INetworkUpR3);
978 return NULL;
979}
980
981
982/* -=-=-=-=- PDMDRVREG -=-=-=-=- */
983
984/**
985 * Power Off notification.
986 *
987 * @param pDrvIns The driver instance.
988 */
989static DECLCALLBACK(void) drvR3IntNetPowerOff(PPDMDRVINS pDrvIns)
990{
991 LogFlow(("drvR3IntNetPowerOff\n"));
992 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
993 if (!pThis->fActivateEarlyDeactivateLate)
994 {
995 ASMAtomicXchgSize(&pThis->enmRecvState, RECVSTATE_SUSPENDED);
996 drvR3IntNetSetActive(pThis, false /* fActive */);
997 }
998}
999
1000
1001/**
1002 * drvR3IntNetResume helper.
1003 */
1004static int drvR3IntNetResumeSend(PDRVINTNET pThis, const void *pvBuf, size_t cb)
1005{
1006 /*
1007 * Add the frame to the send buffer and push it onto the network.
1008 */
1009 int rc = IntNetRingWriteFrame(&pThis->pBufR3->Send, pvBuf, (uint32_t)cb);
1010 if ( rc == VERR_BUFFER_OVERFLOW
1011 && pThis->pBufR3->cbSend < cb)
1012 {
1013 INTNETIFSENDREQ SendReq;
1014 SendReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1015 SendReq.Hdr.cbReq = sizeof(SendReq);
1016 SendReq.pSession = NIL_RTR0PTR;
1017 SendReq.hIf = pThis->hIf;
1018 PDMDrvHlpSUPCallVMMR0Ex(pThis->pDrvInsR3, VMMR0_DO_INTNET_IF_SEND, &SendReq, sizeof(SendReq));
1019
1020 rc = IntNetRingWriteFrame(&pThis->pBufR3->Send, pvBuf, (uint32_t)cb);
1021 }
1022
1023 if (RT_SUCCESS(rc))
1024 {
1025 INTNETIFSENDREQ SendReq;
1026 SendReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1027 SendReq.Hdr.cbReq = sizeof(SendReq);
1028 SendReq.pSession = NIL_RTR0PTR;
1029 SendReq.hIf = pThis->hIf;
1030 rc = PDMDrvHlpSUPCallVMMR0Ex(pThis->pDrvInsR3, VMMR0_DO_INTNET_IF_SEND, &SendReq, sizeof(SendReq));
1031 }
1032
1033 AssertRC(rc);
1034 return rc;
1035}
1036
1037
1038/**
1039 * Resume notification.
1040 *
1041 * @param pDrvIns The driver instance.
1042 */
1043static DECLCALLBACK(void) drvR3IntNetResume(PPDMDRVINS pDrvIns)
1044{
1045 LogFlow(("drvR3IntNetPowerResume\n"));
1046 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
1047 VMRESUMEREASON enmReason = PDMDrvHlpVMGetResumeReason(pDrvIns);
1048
1049 if (!pThis->fActivateEarlyDeactivateLate)
1050 {
1051 ASMAtomicXchgSize(&pThis->enmRecvState, RECVSTATE_RUNNING);
1052 RTSemEventSignal(pThis->hRecvEvt);
1053 drvR3IntNetUpdateMacAddress(pThis); /* (could be a state restore) */
1054 drvR3IntNetSetActive(pThis, true /* fActive */);
1055 }
1056
1057 switch (enmReason)
1058 {
1059 case VMRESUMEREASON_HOST_RESUME:
1060 {
1061 uint32_t u32TrunkType;
1062 int rc = CFGMR3QueryU32(pDrvIns->pCfg, "TrunkType", &u32TrunkType);
1063 AssertRC(rc);
1064
1065 /*
1066 * Only do the disconnect for bridged networking. Host-only and
1067 * internal networks are not affected by a host resume.
1068 */
1069 if ( RT_SUCCESS(rc)
1070 && u32TrunkType == kIntNetTrunkType_NetFlt)
1071 {
1072 rc = pThis->pIAboveConfigR3->pfnSetLinkState(pThis->pIAboveConfigR3,
1073 PDMNETWORKLINKSTATE_DOWN_RESUME);
1074 AssertRC(rc);
1075 }
1076 break;
1077 }
1078 case VMRESUMEREASON_TELEPORTED:
1079 case VMRESUMEREASON_TELEPORT_FAILED:
1080 {
1081 if ( PDMDrvHlpVMTeleportedAndNotFullyResumedYet(pDrvIns)
1082 && pThis->pIAboveConfigR3)
1083 {
1084 /*
1085 * We've just been teleported and need to drop a hint to the switch
1086 * since we're likely to have changed to a different port. We just
1087 * push out some ethernet frame that doesn't mean anything to anyone.
1088 * For this purpose ethertype 0x801e was chosen since it was registered
1089 * to Sun (dunno what it is/was used for though).
1090 */
1091 union
1092 {
1093 RTNETETHERHDR Hdr;
1094 uint8_t ab[128];
1095 } Frame;
1096 RT_ZERO(Frame);
1097 Frame.Hdr.DstMac.au16[0] = 0xffff;
1098 Frame.Hdr.DstMac.au16[1] = 0xffff;
1099 Frame.Hdr.DstMac.au16[2] = 0xffff;
1100 Frame.Hdr.EtherType = RT_H2BE_U16_C(0x801e);
1101 int rc = pThis->pIAboveConfigR3->pfnGetMac(pThis->pIAboveConfigR3,
1102 &Frame.Hdr.SrcMac);
1103 if (RT_SUCCESS(rc))
1104 rc = drvR3IntNetResumeSend(pThis, &Frame, sizeof(Frame));
1105 if (RT_FAILURE(rc))
1106 LogRel(("IntNet#%u: Sending dummy frame failed: %Rrc\n",
1107 pDrvIns->iInstance, rc));
1108 }
1109 break;
1110 }
1111 default: /* ignore every other resume reason else */
1112 break;
1113 } /* end of switch(enmReason) */
1114}
1115
1116
1117/**
1118 * Suspend notification.
1119 *
1120 * @param pDrvIns The driver instance.
1121 */
1122static DECLCALLBACK(void) drvR3IntNetSuspend(PPDMDRVINS pDrvIns)
1123{
1124 LogFlow(("drvR3IntNetPowerSuspend\n"));
1125 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
1126 if (!pThis->fActivateEarlyDeactivateLate)
1127 {
1128 ASMAtomicXchgSize(&pThis->enmRecvState, RECVSTATE_SUSPENDED);
1129 drvR3IntNetSetActive(pThis, false /* fActive */);
1130 }
1131}
1132
1133
1134/**
1135 * Power On notification.
1136 *
1137 * @param pDrvIns The driver instance.
1138 */
1139static DECLCALLBACK(void) drvR3IntNetPowerOn(PPDMDRVINS pDrvIns)
1140{
1141 LogFlow(("drvR3IntNetPowerOn\n"));
1142 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
1143 if (!pThis->fActivateEarlyDeactivateLate)
1144 {
1145 ASMAtomicXchgSize(&pThis->enmRecvState, RECVSTATE_RUNNING);
1146 RTSemEventSignal(pThis->hRecvEvt);
1147 drvR3IntNetUpdateMacAddress(pThis);
1148 drvR3IntNetSetActive(pThis, true /* fActive */);
1149 }
1150}
1151
1152
1153/**
1154 * @interface_method_impl{PDMDRVREG,pfnRelocate}
1155 */
1156static DECLCALLBACK(void) drvR3IntNetRelocate(PPDMDRVINS pDrvIns, RTGCINTPTR offDelta)
1157{
1158 /* nothing to do here yet */
1159 RT_NOREF(pDrvIns, offDelta);
1160}
1161
1162
1163/**
1164 * Destruct a driver instance.
1165 *
1166 * Most VM resources are freed by the VM. This callback is provided so that any non-VM
1167 * resources can be freed correctly.
1168 *
1169 * @param pDrvIns The driver instance data.
1170 */
1171static DECLCALLBACK(void) drvR3IntNetDestruct(PPDMDRVINS pDrvIns)
1172{
1173 LogFlow(("drvR3IntNetDestruct\n"));
1174 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
1175 PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
1176
1177 /*
1178 * Indicate to the receive thread that it's time to quit.
1179 */
1180 ASMAtomicXchgSize(&pThis->enmRecvState, RECVSTATE_TERMINATE);
1181 ASMAtomicXchgSize(&pThis->fLinkDown, true);
1182 RTSEMEVENT hRecvEvt = pThis->hRecvEvt;
1183 pThis->hRecvEvt = NIL_RTSEMEVENT;
1184
1185 if (hRecvEvt != NIL_RTSEMEVENT)
1186 RTSemEventSignal(hRecvEvt);
1187
1188 if (pThis->hIf != INTNET_HANDLE_INVALID)
1189 {
1190 INTNETIFABORTWAITREQ AbortWaitReq;
1191 AbortWaitReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1192 AbortWaitReq.Hdr.cbReq = sizeof(AbortWaitReq);
1193 AbortWaitReq.pSession = NIL_RTR0PTR;
1194 AbortWaitReq.hIf = pThis->hIf;
1195 AbortWaitReq.fNoMoreWaits = true;
1196 int rc = PDMDrvHlpSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_ABORT_WAIT, &AbortWaitReq, sizeof(AbortWaitReq));
1197 AssertMsg(RT_SUCCESS(rc) || rc == VERR_SEM_DESTROYED, ("%Rrc\n", rc)); RT_NOREF_PV(rc);
1198 }
1199
1200 /*
1201 * Wait for the threads to terminate.
1202 */
1203 if (pThis->pXmitThread)
1204 {
1205 int rc = PDMR3ThreadDestroy(pThis->pXmitThread, NULL);
1206 AssertRC(rc);
1207 pThis->pXmitThread = NULL;
1208 }
1209
1210 if (pThis->hRecvThread != NIL_RTTHREAD)
1211 {
1212 int rc = RTThreadWait(pThis->hRecvThread, 5000, NULL);
1213 AssertRC(rc);
1214 pThis->hRecvThread = NIL_RTTHREAD;
1215 }
1216
1217 /*
1218 * Deregister statistics in case we're being detached.
1219 */
1220 if (pThis->pBufR3)
1221 {
1222 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->Recv.cStatFrames);
1223 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->Recv.cbStatWritten);
1224 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->Recv.cOverflows);
1225 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->Send.cStatFrames);
1226 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->Send.cbStatWritten);
1227 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->Send.cOverflows);
1228 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->cStatYieldsOk);
1229 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->cStatYieldsNok);
1230 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->cStatLost);
1231 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->cStatBadFrames);
1232 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->StatSend1);
1233 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->StatSend2);
1234 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->StatRecv1);
1235 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->StatRecv2);
1236 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->pBufR3->StatReserved);
1237 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatReceivedGso);
1238 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatSentGso);
1239#ifdef VBOX_WITH_STATISTICS
1240 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatReceive);
1241 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatTransmit);
1242#endif
1243 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatXmitWakeupR0);
1244 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatXmitWakeupR3);
1245 PDMDrvHlpSTAMDeregister(pDrvIns, &pThis->StatXmitProcessRing);
1246 }
1247
1248 /*
1249 * Close the interface
1250 */
1251 if (pThis->hIf != INTNET_HANDLE_INVALID)
1252 {
1253 INTNETIFCLOSEREQ CloseReq;
1254 CloseReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1255 CloseReq.Hdr.cbReq = sizeof(CloseReq);
1256 CloseReq.pSession = NIL_RTR0PTR;
1257 CloseReq.hIf = pThis->hIf;
1258 pThis->hIf = INTNET_HANDLE_INVALID;
1259 int rc = PDMDrvHlpSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_CLOSE, &CloseReq, sizeof(CloseReq));
1260 AssertRC(rc);
1261 }
1262
1263
1264 /*
1265 * Destroy the semaphores, S/G cache and xmit lock.
1266 */
1267 if (hRecvEvt != NIL_RTSEMEVENT)
1268 RTSemEventDestroy(hRecvEvt);
1269
1270 if (pThis->hXmitEvt != NIL_SUPSEMEVENT)
1271 {
1272 SUPSemEventClose(pThis->pSupDrvSession, pThis->hXmitEvt);
1273 pThis->hXmitEvt = NIL_SUPSEMEVENT;
1274 }
1275
1276 RTMemCacheDestroy(pThis->hSgCache);
1277 pThis->hSgCache = NIL_RTMEMCACHE;
1278
1279 if (PDMCritSectIsInitialized(&pThis->XmitLock))
1280 PDMR3CritSectDelete(&pThis->XmitLock);
1281}
1282
1283
1284/**
1285 * Queries a policy config value and translates it into open network flag.
1286 *
1287 * @returns VBox status code (error set on failure).
1288 * @param pDrvIns The driver instance.
1289 * @param pszName The value name.
1290 * @param paFlags The open network flag descriptors.
1291 * @param cFlags The number of descriptors.
1292 * @param fFlags The fixed flag.
1293 * @param pfFlags The flags variable to update.
1294 */
1295static int drvIntNetR3CfgGetPolicy(PPDMDRVINS pDrvIns, const char *pszName, PCDRVINTNETFLAG paFlags, size_t cFlags,
1296 uint32_t fFixedFlag, uint32_t *pfFlags)
1297{
1298 char szValue[64];
1299 int rc = CFGMR3QueryString(pDrvIns->pCfg, pszName, szValue, sizeof(szValue));
1300 if (RT_FAILURE(rc))
1301 {
1302 if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1303 return VINF_SUCCESS;
1304 return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
1305 N_("Configuration error: Failed to query value of \"%s\""), pszName);
1306 }
1307
1308 /*
1309 * Check for +fixed first, so it can be stripped off.
1310 */
1311 char *pszSep = strpbrk(szValue, "+,;");
1312 if (pszSep)
1313 {
1314 *pszSep++ = '\0';
1315 const char *pszFixed = RTStrStripL(pszSep);
1316 if (strcmp(pszFixed, "fixed"))
1317 {
1318 *pszSep = '+';
1319 return PDMDrvHlpVMSetError(pDrvIns, VERR_INVALID_PARAMETER, RT_SRC_POS,
1320 N_("Configuration error: The value of \"%s\" is unknown: \"%s\""), pszName, szValue);
1321 }
1322 *pfFlags |= fFixedFlag;
1323 RTStrStripR(szValue);
1324 }
1325
1326 /*
1327 * Match against the flag values.
1328 */
1329 size_t i = cFlags;
1330 while (i-- > 0)
1331 if (!strcmp(paFlags[i].pszChoice, szValue))
1332 {
1333 *pfFlags |= paFlags[i].fFlag;
1334 return VINF_SUCCESS;
1335 }
1336
1337 if (!strcmp(szValue, "none"))
1338 return VINF_SUCCESS;
1339
1340 if (!strcmp(szValue, "fixed"))
1341 {
1342 *pfFlags |= fFixedFlag;
1343 return VINF_SUCCESS;
1344 }
1345
1346 return PDMDrvHlpVMSetError(pDrvIns, VERR_INVALID_PARAMETER, RT_SRC_POS,
1347 N_("Configuration error: The value of \"%s\" is unknown: \"%s\""), pszName, szValue);
1348}
1349
1350
1351/**
1352 * Construct a TAP network transport driver instance.
1353 *
1354 * @copydoc FNPDMDRVCONSTRUCT
1355 */
1356static DECLCALLBACK(int) drvR3IntNetConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
1357{
1358 RT_NOREF(fFlags);
1359 PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
1360 PDRVINTNET pThis = PDMINS_2_DATA(pDrvIns, PDRVINTNET);
1361 bool f;
1362
1363 /*
1364 * Init the static parts.
1365 */
1366 pThis->pDrvInsR3 = pDrvIns;
1367#ifdef VBOX_WITH_DRVINTNET_IN_R0
1368 pThis->pDrvInsR0 = PDMDRVINS_2_R0PTR(pDrvIns);
1369#endif
1370 pThis->hIf = INTNET_HANDLE_INVALID;
1371 pThis->hRecvThread = NIL_RTTHREAD;
1372 pThis->hRecvEvt = NIL_RTSEMEVENT;
1373 pThis->pXmitThread = NULL;
1374 pThis->hXmitEvt = NIL_SUPSEMEVENT;
1375 pThis->pSupDrvSession = PDMDrvHlpGetSupDrvSession(pDrvIns);
1376 pThis->hSgCache = NIL_RTMEMCACHE;
1377 pThis->enmRecvState = RECVSTATE_SUSPENDED;
1378 pThis->fActivateEarlyDeactivateLate = false;
1379 /* IBase* */
1380 pDrvIns->IBase.pfnQueryInterface = drvR3IntNetIBase_QueryInterface;
1381 pThis->IBaseR0.pfnQueryInterface = drvR3IntNetIBaseR0_QueryInterface;
1382 pThis->IBaseRC.pfnQueryInterface = drvR3IntNetIBaseRC_QueryInterface;
1383 /* INetworkUp */
1384 pThis->INetworkUpR3.pfnBeginXmit = drvIntNetUp_BeginXmit;
1385 pThis->INetworkUpR3.pfnAllocBuf = drvIntNetUp_AllocBuf;
1386 pThis->INetworkUpR3.pfnFreeBuf = drvIntNetUp_FreeBuf;
1387 pThis->INetworkUpR3.pfnSendBuf = drvIntNetUp_SendBuf;
1388 pThis->INetworkUpR3.pfnEndXmit = drvIntNetUp_EndXmit;
1389 pThis->INetworkUpR3.pfnSetPromiscuousMode = drvIntNetUp_SetPromiscuousMode;
1390 pThis->INetworkUpR3.pfnNotifyLinkChanged = drvR3IntNetUp_NotifyLinkChanged;
1391
1392 /*
1393 * Validate the config.
1394 */
1395 PDMDRV_VALIDATE_CONFIG_RETURN(pDrvIns,
1396 "Network"
1397 "|Trunk"
1398 "|TrunkType"
1399 "|ReceiveBufferSize"
1400 "|SendBufferSize"
1401 "|SharedMacOnWire"
1402 "|RestrictAccess"
1403 "|RequireExactPolicyMatch"
1404 "|RequireAsRestrictivePolicy"
1405 "|AccessPolicy"
1406 "|PromiscPolicyClients"
1407 "|PromiscPolicyHost"
1408 "|PromiscPolicyWire"
1409 "|IfPolicyPromisc"
1410 "|TrunkPolicyHost"
1411 "|TrunkPolicyWire"
1412 "|IsService"
1413 "|IgnoreConnectFailure"
1414 "|Workaround1",
1415 "");
1416
1417 /*
1418 * Check that no-one is attached to us.
1419 */
1420 AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
1421 ("Configuration error: Not possible to attach anything to this driver!\n"),
1422 VERR_PDM_DRVINS_NO_ATTACH);
1423
1424 /*
1425 * Query the network port interface.
1426 */
1427 pThis->pIAboveNet = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMINETWORKDOWN);
1428 if (!pThis->pIAboveNet)
1429 {
1430 AssertMsgFailed(("Configuration error: the above device/driver didn't export the network port interface!\n"));
1431 return VERR_PDM_MISSING_INTERFACE_ABOVE;
1432 }
1433 pThis->pIAboveConfigR3 = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMINETWORKCONFIG);
1434
1435 /*
1436 * Read the configuration.
1437 */
1438 INTNETOPENREQ OpenReq;
1439 RT_ZERO(OpenReq);
1440 OpenReq.Hdr.cbReq = sizeof(OpenReq);
1441 OpenReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1442 OpenReq.pSession = NIL_RTR0PTR;
1443
1444 /** @cfgm{Network, string}
1445 * The name of the internal network to connect to.
1446 */
1447 int rc = CFGMR3QueryString(pCfg, "Network", OpenReq.szNetwork, sizeof(OpenReq.szNetwork));
1448 if (RT_FAILURE(rc))
1449 return PDMDRV_SET_ERROR(pDrvIns, rc,
1450 N_("Configuration error: Failed to get the \"Network\" value"));
1451 strcpy(pThis->szNetwork, OpenReq.szNetwork);
1452
1453 /** @cfgm{TrunkType, uint32_t, kIntNetTrunkType_None}
1454 * The trunk connection type see INTNETTRUNKTYPE.
1455 */
1456 uint32_t u32TrunkType;
1457 rc = CFGMR3QueryU32(pCfg, "TrunkType", &u32TrunkType);
1458 if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1459 u32TrunkType = kIntNetTrunkType_None;
1460 else if (RT_FAILURE(rc))
1461 return PDMDRV_SET_ERROR(pDrvIns, rc,
1462 N_("Configuration error: Failed to get the \"TrunkType\" value"));
1463 OpenReq.enmTrunkType = (INTNETTRUNKTYPE)u32TrunkType;
1464
1465 /** @cfgm{Trunk, string, ""}
1466 * The name of the trunk connection.
1467 */
1468 rc = CFGMR3QueryString(pCfg, "Trunk", OpenReq.szTrunk, sizeof(OpenReq.szTrunk));
1469 if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1470 OpenReq.szTrunk[0] = '\0';
1471 else if (RT_FAILURE(rc))
1472 return PDMDRV_SET_ERROR(pDrvIns, rc,
1473 N_("Configuration error: Failed to get the \"Trunk\" value"));
1474
1475 OpenReq.fFlags = 0;
1476
1477 /** @cfgm{SharedMacOnWire, boolean, false}
1478 * Whether to shared the MAC address of the host interface when using the wire. When
1479 * attaching to a wireless NIC this option is usually a requirement.
1480 */
1481 bool fSharedMacOnWire;
1482 rc = CFGMR3QueryBoolDef(pCfg, "SharedMacOnWire", &fSharedMacOnWire, false);
1483 if (RT_FAILURE(rc))
1484 return PDMDRV_SET_ERROR(pDrvIns, rc,
1485 N_("Configuration error: Failed to get the \"SharedMacOnWire\" value"));
1486 if (fSharedMacOnWire)
1487 OpenReq.fFlags |= INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE;
1488
1489 /** @cfgm{RestrictAccess, boolean, true}
1490 * Whether to restrict the access to the network or if it should be public.
1491 * Everyone on the computer can connect to a public network.
1492 * @deprecated Use AccessPolicy instead.
1493 */
1494 rc = CFGMR3QueryBool(pCfg, "RestrictAccess", &f);
1495 if (RT_SUCCESS(rc))
1496 {
1497 if (f)
1498 OpenReq.fFlags |= INTNET_OPEN_FLAGS_ACCESS_RESTRICTED;
1499 else
1500 OpenReq.fFlags |= INTNET_OPEN_FLAGS_ACCESS_PUBLIC;
1501 OpenReq.fFlags |= INTNET_OPEN_FLAGS_ACCESS_FIXED;
1502 }
1503 else if (rc != VERR_CFGM_VALUE_NOT_FOUND)
1504 return PDMDRV_SET_ERROR(pDrvIns, rc,
1505 N_("Configuration error: Failed to get the \"RestrictAccess\" value"));
1506
1507 /** @cfgm{RequireExactPolicyMatch, boolean, false}
1508 * Whether to require that the current security and promiscuous policies of
1509 * the network is exactly as the ones specified in this open network
1510 * request. Use this with RequireAsRestrictivePolicy to prevent
1511 * restrictions from being lifted. If no further policy changes are
1512 * desired, apply the relevant fixed flags. */
1513 rc = CFGMR3QueryBoolDef(pCfg, "RequireExactPolicyMatch", &f, false);
1514 if (RT_FAILURE(rc))
1515 return PDMDRV_SET_ERROR(pDrvIns, rc,
1516 N_("Configuration error: Failed to get the \"RequireExactPolicyMatch\" value"));
1517 if (f)
1518 OpenReq.fFlags |= INTNET_OPEN_FLAGS_REQUIRE_EXACT;
1519
1520 /** @cfgm{RequireAsRestrictivePolicy, boolean, false}
1521 * Whether to require that the security and promiscuous policies of the
1522 * network is at least as restrictive as specified this request specifies
1523 * and prevent them being lifted later on.
1524 */
1525 rc = CFGMR3QueryBoolDef(pCfg, "RequireAsRestrictivePolicy", &f, false);
1526 if (RT_FAILURE(rc))
1527 return PDMDRV_SET_ERROR(pDrvIns, rc,
1528 N_("Configuration error: Failed to get the \"RequireAsRestrictivePolicy\" value"));
1529 if (f)
1530 OpenReq.fFlags |= INTNET_OPEN_FLAGS_REQUIRE_AS_RESTRICTIVE_POLICIES;
1531
1532 /** @cfgm{AccessPolicy, string, "none"}
1533 * The access policy of the network:
1534 * public, public+fixed, restricted, restricted+fixed, none or fixed.
1535 *
1536 * A "public" network is accessible to everyone on the same host, while a
1537 * "restricted" one is only accessible to VMs & services started by the
1538 * same user. The "none" policy, which is the default, means no policy
1539 * change or choice is made and that the current (existing network) or
1540 * default (new) policy should be used. */
1541 static const DRVINTNETFLAG s_aAccessPolicyFlags[] =
1542 {
1543 { "public", INTNET_OPEN_FLAGS_ACCESS_PUBLIC },
1544 { "restricted", INTNET_OPEN_FLAGS_ACCESS_RESTRICTED }
1545 };
1546 rc = drvIntNetR3CfgGetPolicy(pDrvIns, "AccessPolicy", &s_aAccessPolicyFlags[0], RT_ELEMENTS(s_aAccessPolicyFlags),
1547 INTNET_OPEN_FLAGS_ACCESS_FIXED, &OpenReq.fFlags);
1548 AssertRCReturn(rc, rc);
1549
1550 /** @cfgm{PromiscPolicyClients, string, "none"}
1551 * The network wide promiscuous mode policy for client (non-trunk)
1552 * interfaces: allow, allow+fixed, deny, deny+fixed, none or fixed. */
1553 static const DRVINTNETFLAG s_aPromiscPolicyClient[] =
1554 {
1555 { "allow", INTNET_OPEN_FLAGS_PROMISC_ALLOW_CLIENTS },
1556 { "deny", INTNET_OPEN_FLAGS_PROMISC_DENY_CLIENTS }
1557 };
1558 rc = drvIntNetR3CfgGetPolicy(pDrvIns, "PromiscPolicyClients", &s_aPromiscPolicyClient[0], RT_ELEMENTS(s_aPromiscPolicyClient),
1559 INTNET_OPEN_FLAGS_PROMISC_FIXED, &OpenReq.fFlags);
1560 AssertRCReturn(rc, rc);
1561 /** @cfgm{PromiscPolicyHost, string, "none"}
1562 * The promiscuous mode policy for the trunk-host
1563 * connection: allow, allow+fixed, deny, deny+fixed, none or fixed. */
1564 static const DRVINTNETFLAG s_aPromiscPolicyHost[] =
1565 {
1566 { "allow", INTNET_OPEN_FLAGS_PROMISC_ALLOW_TRUNK_HOST },
1567 { "deny", INTNET_OPEN_FLAGS_PROMISC_DENY_TRUNK_HOST }
1568 };
1569 rc = drvIntNetR3CfgGetPolicy(pDrvIns, "PromiscPolicyHost", &s_aPromiscPolicyHost[0], RT_ELEMENTS(s_aPromiscPolicyHost),
1570 INTNET_OPEN_FLAGS_PROMISC_FIXED, &OpenReq.fFlags);
1571 AssertRCReturn(rc, rc);
1572 /** @cfgm{PromiscPolicyWire, string, "none"}
1573 * The promiscuous mode policy for the trunk-host
1574 * connection: allow, allow+fixed, deny, deny+fixed, none or fixed. */
1575 static const DRVINTNETFLAG s_aPromiscPolicyWire[] =
1576 {
1577 { "allow", INTNET_OPEN_FLAGS_PROMISC_ALLOW_TRUNK_WIRE },
1578 { "deny", INTNET_OPEN_FLAGS_PROMISC_DENY_TRUNK_WIRE }
1579 };
1580 rc = drvIntNetR3CfgGetPolicy(pDrvIns, "PromiscPolicyWire", &s_aPromiscPolicyWire[0], RT_ELEMENTS(s_aPromiscPolicyWire),
1581 INTNET_OPEN_FLAGS_PROMISC_FIXED, &OpenReq.fFlags);
1582 AssertRCReturn(rc, rc);
1583
1584
1585 /** @cfgm{IfPolicyPromisc, string, "none"}
1586 * The promiscuous mode policy for this
1587 * interface: deny, deny+fixed, allow-all, allow-all+fixed, allow-network,
1588 * allow-network+fixed, none or fixed. */
1589 static const DRVINTNETFLAG s_aIfPolicyPromisc[] =
1590 {
1591 { "allow-all", INTNET_OPEN_FLAGS_IF_PROMISC_ALLOW | INTNET_OPEN_FLAGS_IF_PROMISC_SEE_TRUNK },
1592 { "allow-network", INTNET_OPEN_FLAGS_IF_PROMISC_ALLOW | INTNET_OPEN_FLAGS_IF_PROMISC_NO_TRUNK },
1593 { "deny", INTNET_OPEN_FLAGS_IF_PROMISC_DENY }
1594 };
1595 rc = drvIntNetR3CfgGetPolicy(pDrvIns, "IfPolicyPromisc", &s_aIfPolicyPromisc[0], RT_ELEMENTS(s_aIfPolicyPromisc),
1596 INTNET_OPEN_FLAGS_IF_FIXED, &OpenReq.fFlags);
1597 AssertRCReturn(rc, rc);
1598
1599
1600 /** @cfgm{TrunkPolicyHost, string, "none"}
1601 * The trunk-host policy: promisc, promisc+fixed, enabled, enabled+fixed,
1602 * disabled, disabled+fixed, none or fixed
1603 *
1604 * This can be used to prevent packages to be routed to the host. */
1605 static const DRVINTNETFLAG s_aTrunkPolicyHost[] =
1606 {
1607 { "promisc", INTNET_OPEN_FLAGS_TRUNK_HOST_ENABLED | INTNET_OPEN_FLAGS_TRUNK_HOST_PROMISC_MODE },
1608 { "enabled", INTNET_OPEN_FLAGS_TRUNK_HOST_ENABLED },
1609 { "disabled", INTNET_OPEN_FLAGS_TRUNK_HOST_DISABLED }
1610 };
1611 rc = drvIntNetR3CfgGetPolicy(pDrvIns, "TrunkPolicyHost", &s_aTrunkPolicyHost[0], RT_ELEMENTS(s_aTrunkPolicyHost),
1612 INTNET_OPEN_FLAGS_TRUNK_FIXED, &OpenReq.fFlags);
1613 AssertRCReturn(rc, rc);
1614 /** @cfgm{TrunkPolicyWire, string, "none"}
1615 * The trunk-host policy: promisc, promisc+fixed, enabled, enabled+fixed,
1616 * disabled, disabled+fixed, none or fixed.
1617 *
1618 * This can be used to prevent packages to be routed to the wire. */
1619 static const DRVINTNETFLAG s_aTrunkPolicyWire[] =
1620 {
1621 { "promisc", INTNET_OPEN_FLAGS_TRUNK_WIRE_ENABLED | INTNET_OPEN_FLAGS_TRUNK_WIRE_PROMISC_MODE },
1622 { "enabled", INTNET_OPEN_FLAGS_TRUNK_WIRE_ENABLED },
1623 { "disabled", INTNET_OPEN_FLAGS_TRUNK_WIRE_DISABLED }
1624 };
1625 rc = drvIntNetR3CfgGetPolicy(pDrvIns, "TrunkPolicyWire", &s_aTrunkPolicyWire[0], RT_ELEMENTS(s_aTrunkPolicyWire),
1626 INTNET_OPEN_FLAGS_TRUNK_FIXED, &OpenReq.fFlags);
1627 AssertRCReturn(rc, rc);
1628
1629
1630 /** @cfgm{ReceiveBufferSize, uint32_t, 318 KB}
1631 * The size of the receive buffer.
1632 */
1633 rc = CFGMR3QueryU32(pCfg, "ReceiveBufferSize", &OpenReq.cbRecv);
1634 if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1635 OpenReq.cbRecv = 318 * _1K ;
1636 else if (RT_FAILURE(rc))
1637 return PDMDRV_SET_ERROR(pDrvIns, rc,
1638 N_("Configuration error: Failed to get the \"ReceiveBufferSize\" value"));
1639
1640 /** @cfgm{SendBufferSize, uint32_t, 196 KB}
1641 * The size of the send (transmit) buffer.
1642 * This should be more than twice the size of the larges frame size because
1643 * the ring buffer is very simple and doesn't support splitting up frames
1644 * nor inserting padding. So, if this is too close to the frame size the
1645 * header will fragment the buffer such that the frame won't fit on either
1646 * side of it and the code will get very upset about it all.
1647 */
1648 rc = CFGMR3QueryU32(pCfg, "SendBufferSize", &OpenReq.cbSend);
1649 if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1650 OpenReq.cbSend = RT_ALIGN_Z(VBOX_MAX_GSO_SIZE * 3, _1K);
1651 else if (RT_FAILURE(rc))
1652 return PDMDRV_SET_ERROR(pDrvIns, rc,
1653 N_("Configuration error: Failed to get the \"SendBufferSize\" value"));
1654 if (OpenReq.cbSend < 128)
1655 return PDMDRV_SET_ERROR(pDrvIns, rc,
1656 N_("Configuration error: The \"SendBufferSize\" value is too small"));
1657 if (OpenReq.cbSend < VBOX_MAX_GSO_SIZE * 3)
1658 LogRel(("DrvIntNet: Warning! SendBufferSize=%u, Recommended minimum size %u butes.\n", OpenReq.cbSend, VBOX_MAX_GSO_SIZE * 4));
1659
1660 /** @cfgm{IsService, boolean, true}
1661 * This alterns the way the thread is suspended and resumed. When it's being used by
1662 * a service such as LWIP/iSCSI it shouldn't suspend immediately like for a NIC.
1663 */
1664 rc = CFGMR3QueryBool(pCfg, "IsService", &pThis->fActivateEarlyDeactivateLate);
1665 if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1666 pThis->fActivateEarlyDeactivateLate = false;
1667 else if (RT_FAILURE(rc))
1668 return PDMDRV_SET_ERROR(pDrvIns, rc,
1669 N_("Configuration error: Failed to get the \"IsService\" value"));
1670
1671
1672 /** @cfgm{IgnoreConnectFailure, boolean, false}
1673 * When set only raise a runtime error if we cannot connect to the internal
1674 * network. */
1675 bool fIgnoreConnectFailure;
1676 rc = CFGMR3QueryBoolDef(pCfg, "IgnoreConnectFailure", &fIgnoreConnectFailure, false);
1677 if (RT_FAILURE(rc))
1678 return PDMDRV_SET_ERROR(pDrvIns, rc,
1679 N_("Configuration error: Failed to get the \"IgnoreConnectFailure\" value"));
1680
1681 /** @cfgm{Workaround1, boolean, depends}
1682 * Enables host specific workarounds, the default is depends on the whether
1683 * we think the host requires it or not.
1684 */
1685 bool fWorkaround1 = false;
1686#ifdef RT_OS_DARWIN
1687 if (OpenReq.fFlags & INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE)
1688 {
1689 char szKrnlVer[256];
1690 RTSystemQueryOSInfo(RTSYSOSINFO_RELEASE, szKrnlVer, sizeof(szKrnlVer));
1691 if (strcmp(szKrnlVer, "10.7.0") >= 0)
1692 {
1693 LogRel(("IntNet#%u: Enables the workaround (ip_tos=0) for the little endian ip header checksum problem\n"));
1694 fWorkaround1 = true;
1695 }
1696 }
1697#endif
1698 rc = CFGMR3QueryBoolDef(pCfg, "Workaround1", &fWorkaround1, fWorkaround1);
1699 if (RT_FAILURE(rc))
1700 return PDMDRV_SET_ERROR(pDrvIns, rc,
1701 N_("Configuration error: Failed to get the \"Workaround1\" value"));
1702 if (fWorkaround1)
1703 OpenReq.fFlags |= INTNET_OPEN_FLAGS_WORKAROUND_1;
1704
1705 LogRel(("IntNet#%u: szNetwork={%s} enmTrunkType=%d szTrunk={%s} fFlags=%#x cbRecv=%u cbSend=%u fIgnoreConnectFailure=%RTbool\n",
1706 pDrvIns->iInstance, OpenReq.szNetwork, OpenReq.enmTrunkType, OpenReq.szTrunk, OpenReq.fFlags,
1707 OpenReq.cbRecv, OpenReq.cbSend, fIgnoreConnectFailure));
1708
1709#ifdef RT_OS_DARWIN
1710 /* Temporary hack: attach to a network with the name 'if=en0' and you're hitting the wire. */
1711 if ( !OpenReq.szTrunk[0]
1712 && OpenReq.enmTrunkType == kIntNetTrunkType_None
1713 && !strncmp(pThis->szNetwork, RT_STR_TUPLE("if=en"))
1714 && RT_C_IS_DIGIT(pThis->szNetwork[sizeof("if=en") - 1])
1715 && !pThis->szNetwork[sizeof("if=en")])
1716 {
1717 OpenReq.enmTrunkType = kIntNetTrunkType_NetFlt;
1718 strcpy(OpenReq.szTrunk, &pThis->szNetwork[sizeof("if=") - 1]);
1719 }
1720 /* Temporary hack: attach to a network with the name 'wif=en0' and you're on the air. */
1721 if ( !OpenReq.szTrunk[0]
1722 && OpenReq.enmTrunkType == kIntNetTrunkType_None
1723 && !strncmp(pThis->szNetwork, RT_STR_TUPLE("wif=en"))
1724 && RT_C_IS_DIGIT(pThis->szNetwork[sizeof("wif=en") - 1])
1725 && !pThis->szNetwork[sizeof("wif=en")])
1726 {
1727 OpenReq.enmTrunkType = kIntNetTrunkType_NetFlt;
1728 OpenReq.fFlags |= INTNET_OPEN_FLAGS_SHARED_MAC_ON_WIRE;
1729 strcpy(OpenReq.szTrunk, &pThis->szNetwork[sizeof("wif=") - 1]);
1730 }
1731#endif /* DARWIN */
1732
1733 /*
1734 * Create the event semaphore, S/G cache and xmit critsect.
1735 */
1736 rc = RTSemEventCreate(&pThis->hRecvEvt);
1737 if (RT_FAILURE(rc))
1738 return rc;
1739 rc = RTMemCacheCreate(&pThis->hSgCache, sizeof(PDMSCATTERGATHER), 0, UINT32_MAX, NULL, NULL, pThis, 0);
1740 if (RT_FAILURE(rc))
1741 return rc;
1742 rc = PDMDrvHlpCritSectInit(pDrvIns, &pThis->XmitLock, RT_SRC_POS, "IntNetXmit");
1743 if (RT_FAILURE(rc))
1744 return rc;
1745
1746 /*
1747 * Create the interface.
1748 */
1749 OpenReq.hIf = INTNET_HANDLE_INVALID;
1750 rc = PDMDrvHlpSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_OPEN, &OpenReq, sizeof(OpenReq));
1751 if (RT_FAILURE(rc))
1752 {
1753 if (fIgnoreConnectFailure)
1754 {
1755 /*
1756 * During VM restore it is fatal if the network is not available because the
1757 * VM settings are locked and the user has no chance to fix network settings.
1758 * Therefore don't abort but just raise a runtime warning.
1759 */
1760 PDMDrvHlpVMSetRuntimeError(pDrvIns, 0 /*fFlags*/, "HostIfNotConnecting",
1761 N_ ("Cannot connect to the network interface '%s'. The virtual "
1762 "network card will appear to work but the guest will not "
1763 "be able to connect. Please choose a different network in the "
1764 "network settings"), OpenReq.szTrunk);
1765
1766 return VERR_PDM_NO_ATTACHED_DRIVER;
1767 }
1768 return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
1769 N_("Failed to open/create the internal network '%s'"), pThis->szNetwork);
1770 }
1771
1772 AssertRelease(OpenReq.hIf != INTNET_HANDLE_INVALID);
1773 pThis->hIf = OpenReq.hIf;
1774 Log(("IntNet%d: hIf=%RX32 '%s'\n", pDrvIns->iInstance, pThis->hIf, pThis->szNetwork));
1775
1776 /*
1777 * Get default buffer.
1778 */
1779 INTNETIFGETBUFFERPTRSREQ GetBufferPtrsReq;
1780 GetBufferPtrsReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
1781 GetBufferPtrsReq.Hdr.cbReq = sizeof(GetBufferPtrsReq);
1782 GetBufferPtrsReq.pSession = NIL_RTR0PTR;
1783 GetBufferPtrsReq.hIf = pThis->hIf;
1784 GetBufferPtrsReq.pRing3Buf = NULL;
1785 GetBufferPtrsReq.pRing0Buf = NIL_RTR0PTR;
1786 rc = PDMDrvHlpSUPCallVMMR0Ex(pDrvIns, VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS, &GetBufferPtrsReq, sizeof(GetBufferPtrsReq));
1787 if (RT_FAILURE(rc))
1788 return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
1789 N_("Failed to get ring-3 buffer for the newly created interface to '%s'"), pThis->szNetwork);
1790 AssertRelease(VALID_PTR(GetBufferPtrsReq.pRing3Buf));
1791 pThis->pBufR3 = GetBufferPtrsReq.pRing3Buf;
1792 pThis->pBufR0 = GetBufferPtrsReq.pRing0Buf;
1793
1794 /*
1795 * Register statistics.
1796 */
1797 PDMDrvHlpSTAMRegCounterEx(pDrvIns, &pThis->pBufR3->Recv.cbStatWritten, "Bytes/Received", STAMUNIT_BYTES, "Number of received bytes.");
1798 PDMDrvHlpSTAMRegCounterEx(pDrvIns, &pThis->pBufR3->Send.cbStatWritten, "Bytes/Sent", STAMUNIT_BYTES, "Number of sent bytes.");
1799 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->Recv.cOverflows, "Overflows/Recv", "Number overflows.");
1800 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->Send.cOverflows, "Overflows/Sent", "Number overflows.");
1801 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->Recv.cStatFrames, "Packets/Received", "Number of received packets.");
1802 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->Send.cStatFrames, "Packets/Sent", "Number of sent packets.");
1803 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->StatReceivedGso, "Packets/Received-Gso", "The GSO portion of the received packets.");
1804 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->StatSentGso, "Packets/Sent-Gso", "The GSO portion of the sent packets.");
1805 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->StatSentR0, "Packets/Sent-R0", "The ring-0 portion of the sent packets.");
1806
1807 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->cStatLost, "Packets/Lost", "Number of lost packets.");
1808 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->cStatYieldsNok, "YieldOk", "Number of times yielding helped fix an overflow.");
1809 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->cStatYieldsOk, "YieldNok", "Number of times yielding didn't help fix an overflow.");
1810 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->pBufR3->cStatBadFrames, "BadFrames", "Number of bad frames seed by the consumers.");
1811 PDMDrvHlpSTAMRegProfile(pDrvIns, &pThis->pBufR3->StatSend1, "Send1", "Profiling IntNetR0IfSend.");
1812 PDMDrvHlpSTAMRegProfile(pDrvIns, &pThis->pBufR3->StatSend2, "Send2", "Profiling sending to the trunk.");
1813 PDMDrvHlpSTAMRegProfile(pDrvIns, &pThis->pBufR3->StatRecv1, "Recv1", "Reserved for future receive profiling.");
1814 PDMDrvHlpSTAMRegProfile(pDrvIns, &pThis->pBufR3->StatRecv2, "Recv2", "Reserved for future receive profiling.");
1815 PDMDrvHlpSTAMRegProfile(pDrvIns, &pThis->pBufR3->StatReserved, "Reserved", "Reserved for future use.");
1816#ifdef VBOX_WITH_STATISTICS
1817 PDMDrvHlpSTAMRegProfileAdv(pDrvIns, &pThis->StatReceive, "Receive", "Profiling packet receive runs.");
1818 PDMDrvHlpSTAMRegProfile(pDrvIns, &pThis->StatTransmit, "Transmit", "Profiling packet transmit runs.");
1819#endif
1820 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->StatXmitWakeupR0, "XmitWakeup-R0", "Xmit thread wakeups from ring-0.");
1821 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->StatXmitWakeupR3, "XmitWakeup-R3", "Xmit thread wakeups from ring-3.");
1822 PDMDrvHlpSTAMRegCounter(pDrvIns, &pThis->StatXmitProcessRing, "XmitProcessRing", "Time xmit thread was told to process the ring.");
1823
1824 /*
1825 * Create the async I/O threads.
1826 * Note! Using a PDM thread here doesn't fit with the IsService=true operation.
1827 */
1828 rc = RTThreadCreate(&pThis->hRecvThread, drvR3IntNetRecvThread, pThis, 0,
1829 RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "INTNET-RECV");
1830 if (RT_FAILURE(rc))
1831 {
1832 AssertRC(rc);
1833 return rc;
1834 }
1835
1836 rc = SUPSemEventCreate(pThis->pSupDrvSession, &pThis->hXmitEvt);
1837 AssertRCReturn(rc, rc);
1838
1839 rc = PDMDrvHlpThreadCreate(pDrvIns, &pThis->pXmitThread, pThis,
1840 drvR3IntNetXmitThread, drvR3IntNetXmitWakeUp, 0, RTTHREADTYPE_IO, "INTNET-XMIT");
1841 AssertRCReturn(rc, rc);
1842
1843#ifdef VBOX_WITH_DRVINTNET_IN_R0
1844 /*
1845 * Resolve the ring-0 context interface addresses.
1846 */
1847 rc = pDrvIns->pHlpR3->pfnLdrGetR0InterfaceSymbols(pDrvIns, &pThis->INetworkUpR0, sizeof(pThis->INetworkUpR0),
1848 "drvIntNetUp_", PDMINETWORKUP_SYM_LIST);
1849 AssertLogRelRCReturn(rc, rc);
1850#endif
1851
1852 /*
1853 * Activate data transmission as early as possible
1854 */
1855 if (pThis->fActivateEarlyDeactivateLate)
1856 {
1857 ASMAtomicXchgSize(&pThis->enmRecvState, RECVSTATE_RUNNING);
1858 RTSemEventSignal(pThis->hRecvEvt);
1859
1860 drvR3IntNetUpdateMacAddress(pThis);
1861 drvR3IntNetSetActive(pThis, true /* fActive */);
1862 }
1863
1864 return rc;
1865}
1866
1867
1868
1869/**
1870 * Internal networking transport driver registration record.
1871 */
1872const PDMDRVREG g_DrvIntNet =
1873{
1874 /* u32Version */
1875 PDM_DRVREG_VERSION,
1876 /* szName */
1877 "IntNet",
1878 /* szRCMod */
1879 "VBoxDDRC.rc",
1880 /* szR0Mod */
1881 "VBoxDDR0.r0",
1882 /* pszDescription */
1883 "Internal Networking Transport Driver",
1884 /* fFlags */
1885#ifdef VBOX_WITH_DRVINTNET_IN_R0
1886 PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT | PDM_DRVREG_FLAGS_R0,
1887#else
1888 PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1889#endif
1890 /* fClass. */
1891 PDM_DRVREG_CLASS_NETWORK,
1892 /* cMaxInstances */
1893 ~0U,
1894 /* cbInstance */
1895 sizeof(DRVINTNET),
1896 /* pfnConstruct */
1897 drvR3IntNetConstruct,
1898 /* pfnDestruct */
1899 drvR3IntNetDestruct,
1900 /* pfnRelocate */
1901 drvR3IntNetRelocate,
1902 /* pfnIOCtl */
1903 NULL,
1904 /* pfnPowerOn */
1905 drvR3IntNetPowerOn,
1906 /* pfnReset */
1907 NULL,
1908 /* pfnSuspend */
1909 drvR3IntNetSuspend,
1910 /* pfnResume */
1911 drvR3IntNetResume,
1912 /* pfnAttach */
1913 NULL,
1914 /* pfnDetach */
1915 NULL,
1916 /* pfnPowerOff */
1917 drvR3IntNetPowerOff,
1918 /* pfnSoftReset */
1919 NULL,
1920 /* u32EndVersion */
1921 PDM_DRVREG_VERSION
1922};
1923
1924#endif /* IN_RING3 */
1925
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