VirtualBox

source: vbox/trunk/src/VBox/Devices/Network/DevVirtioNet.cpp@ 67970

Last change on this file since 67970 was 67970, checked in by vboxsync, 8 years ago

bugref:8844: DevVirtioNet: fixes
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File size: 77.9 KB
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1/* $Id: DevVirtioNet.cpp 67970 2017-07-14 13:36:08Z vboxsync $ */
2/** @file
3 * DevVirtioNet - Virtio Network Device
4 */
5
6/*
7 * Copyright (C) 2009-2016 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.215389.xyz. 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_VIRTIO_NET
23#define VNET_GC_SUPPORT
24#define VNET_WITH_GSO
25#define VNET_WITH_MERGEABLE_RX_BUFS
26
27#include <VBox/vmm/pdmdev.h>
28#include <VBox/vmm/pdmnetifs.h>
29#include <iprt/asm.h>
30#include <iprt/net.h>
31#include <iprt/semaphore.h>
32#ifdef IN_RING3
33# include <iprt/mem.h>
34# include <iprt/uuid.h>
35#endif /* IN_RING3 */
36#include <VBox/VBoxPktDmp.h>
37#include "VBoxDD.h"
38#include "../VirtIO/Virtio.h"
39
40
41/*********************************************************************************************************************************
42* Defined Constants And Macros *
43*********************************************************************************************************************************/
44#ifndef VBOX_DEVICE_STRUCT_TESTCASE
45
46#define INSTANCE(pThis) pThis->VPCI.szInstance
47#define STATUS pThis->config.uStatus
48
49#ifdef IN_RING3
50
51#define VNET_PCI_CLASS 0x0200
52#define VNET_N_QUEUES 3
53#define VNET_NAME_FMT "VNet%d"
54
55#if 0
56/* Virtio Block Device */
57#define VNET_PCI_CLASS 0x0180
58#define VNET_N_QUEUES 2
59#define VNET_NAME_FMT "VBlk%d"
60#endif
61
62#endif /* IN_RING3 */
63
64#endif /* VBOX_DEVICE_STRUCT_TESTCASE */
65
66
67#define VNET_TX_DELAY 150 /**< 150 microseconds */
68#define VNET_MAX_FRAME_SIZE 65535 + 18 /**< Max IP packet size + Ethernet header with VLAN tag */
69#define VNET_MAC_FILTER_LEN 32
70#define VNET_MAX_VID (1 << 12)
71
72/** @name Virtio net features
73 * @{ */
74#define VNET_F_CSUM 0x00000001 /**< Host handles pkts w/ partial csum */
75#define VNET_F_GUEST_CSUM 0x00000002 /**< Guest handles pkts w/ partial csum */
76#define VNET_F_MAC 0x00000020 /**< Host has given MAC address. */
77#define VNET_F_GSO 0x00000040 /**< Host handles pkts w/ any GSO type */
78#define VNET_F_GUEST_TSO4 0x00000080 /**< Guest can handle TSOv4 in. */
79#define VNET_F_GUEST_TSO6 0x00000100 /**< Guest can handle TSOv6 in. */
80#define VNET_F_GUEST_ECN 0x00000200 /**< Guest can handle TSO[6] w/ ECN in. */
81#define VNET_F_GUEST_UFO 0x00000400 /**< Guest can handle UFO in. */
82#define VNET_F_HOST_TSO4 0x00000800 /**< Host can handle TSOv4 in. */
83#define VNET_F_HOST_TSO6 0x00001000 /**< Host can handle TSOv6 in. */
84#define VNET_F_HOST_ECN 0x00002000 /**< Host can handle TSO[6] w/ ECN in. */
85#define VNET_F_HOST_UFO 0x00004000 /**< Host can handle UFO in. */
86#define VNET_F_MRG_RXBUF 0x00008000 /**< Host can merge receive buffers. */
87#define VNET_F_STATUS 0x00010000 /**< virtio_net_config.status available */
88#define VNET_F_CTRL_VQ 0x00020000 /**< Control channel available */
89#define VNET_F_CTRL_RX 0x00040000 /**< Control channel RX mode support */
90#define VNET_F_CTRL_VLAN 0x00080000 /**< Control channel VLAN filtering */
91/** @} */
92
93#define VNET_S_LINK_UP 1
94
95
96/*********************************************************************************************************************************
97* Structures and Typedefs *
98*********************************************************************************************************************************/
99#ifdef _MSC_VER
100struct VNetPCIConfig
101#else /* !_MSC_VER */
102struct __attribute__ ((__packed__)) VNetPCIConfig /** @todo r=bird: Use #pragma pack if necessary, that's portable! */
103#endif /* !_MSC_VER */
104{
105 RTMAC mac;
106 uint16_t uStatus;
107};
108AssertCompileMemberOffset(struct VNetPCIConfig, uStatus, 6);
109
110/**
111 * Device state structure. Holds the current state of device.
112 *
113 * @extends VPCISTATE
114 * @implements PDMINETWORKDOWN
115 * @implements PDMINETWORKCONFIG
116 */
117typedef struct VNetState_st
118{
119 /* VPCISTATE must be the first member! */
120 VPCISTATE VPCI;
121
122// PDMCRITSECT csRx; /**< Protects RX queue. */
123
124 PDMINETWORKDOWN INetworkDown;
125 PDMINETWORKCONFIG INetworkConfig;
126 R3PTRTYPE(PPDMIBASE) pDrvBase; /**< Attached network driver. */
127 R3PTRTYPE(PPDMINETWORKUP) pDrv; /**< Connector of attached network driver. */
128
129 R3PTRTYPE(PPDMQUEUE) pCanRxQueueR3; /**< Rx wakeup signaller - R3. */
130 R0PTRTYPE(PPDMQUEUE) pCanRxQueueR0; /**< Rx wakeup signaller - R0. */
131 RCPTRTYPE(PPDMQUEUE) pCanRxQueueRC; /**< Rx wakeup signaller - RC. */
132# if HC_ARCH_BITS == 64
133 uint32_t padding;
134# endif
135
136 /**< Link Up(/Restore) Timer. */
137 PTMTIMERR3 pLinkUpTimer;
138
139#ifdef VNET_TX_DELAY
140 /**< Transmit Delay Timer - R3. */
141 PTMTIMERR3 pTxTimerR3;
142 /**< Transmit Delay Timer - R0. */
143 PTMTIMERR0 pTxTimerR0;
144 /**< Transmit Delay Timer - GC. */
145 PTMTIMERRC pTxTimerRC;
146
147# if HC_ARCH_BITS == 64
148 uint32_t padding2;
149# endif
150
151 uint32_t u32i;
152 uint32_t u32AvgDiff;
153 uint32_t u32MinDiff;
154 uint32_t u32MaxDiff;
155 uint64_t u64NanoTS;
156#endif /* VNET_TX_DELAY */
157
158 /** Indicates transmission in progress -- only one thread is allowed. */
159 uint32_t uIsTransmitting;
160
161 /** PCI config area holding MAC address as well as TBD. */
162 struct VNetPCIConfig config;
163 /** MAC address obtained from the configuration. */
164 RTMAC macConfigured;
165 /** True if physical cable is attached in configuration. */
166 bool fCableConnected;
167 /** Link up delay (in milliseconds). */
168 uint32_t cMsLinkUpDelay;
169
170 uint32_t alignment;
171
172 /** Number of packet being sent/received to show in debug log. */
173 uint32_t u32PktNo;
174
175 /** N/A: */
176 bool volatile fMaybeOutOfSpace;
177
178 /** Promiscuous mode -- RX filter accepts all packets. */
179 bool fPromiscuous;
180 /** AllMulti mode -- RX filter accepts all multicast packets. */
181 bool fAllMulti;
182 /** The number of actually used slots in aMacTable. */
183 uint32_t nMacFilterEntries;
184 /** Array of MAC addresses accepted by RX filter. */
185 RTMAC aMacFilter[VNET_MAC_FILTER_LEN];
186 /** Bit array of VLAN filter, one bit per VLAN ID. */
187 uint8_t aVlanFilter[VNET_MAX_VID / sizeof(uint8_t)];
188
189 R3PTRTYPE(PVQUEUE) pRxQueue;
190 R3PTRTYPE(PVQUEUE) pTxQueue;
191 R3PTRTYPE(PVQUEUE) pCtlQueue;
192 /* Receive-blocking-related fields ***************************************/
193
194 /** EMT: Gets signalled when more RX descriptors become available. */
195 RTSEMEVENT hEventMoreRxDescAvail;
196
197 /** @name Statistic
198 * @{ */
199 STAMCOUNTER StatReceiveBytes;
200 STAMCOUNTER StatTransmitBytes;
201 STAMCOUNTER StatReceiveGSO;
202 STAMCOUNTER StatTransmitPackets;
203 STAMCOUNTER StatTransmitGSO;
204 STAMCOUNTER StatTransmitCSum;
205#if defined(VBOX_WITH_STATISTICS)
206 STAMPROFILE StatReceive;
207 STAMPROFILE StatReceiveStore;
208 STAMPROFILEADV StatTransmit;
209 STAMPROFILE StatTransmitSend;
210 STAMPROFILE StatRxOverflow;
211 STAMCOUNTER StatRxOverflowWakeup;
212#endif /* VBOX_WITH_STATISTICS */
213 /** @} */
214} VNETSTATE;
215/** Pointer to a virtual I/O network device state. */
216typedef VNETSTATE *PVNETSTATE;
217
218#ifndef VBOX_DEVICE_STRUCT_TESTCASE
219
220#define VNETHDR_F_NEEDS_CSUM 1 // Use u16CSumStart, u16CSumOffset
221
222#define VNETHDR_GSO_NONE 0 // Not a GSO frame
223#define VNETHDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO)
224#define VNETHDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO)
225#define VNETHDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP
226#define VNETHDR_GSO_ECN 0x80 // TCP has ECN set
227
228struct VNetHdr
229{
230 uint8_t u8Flags;
231 uint8_t u8GSOType;
232 uint16_t u16HdrLen;
233 uint16_t u16GSOSize;
234 uint16_t u16CSumStart;
235 uint16_t u16CSumOffset;
236};
237typedef struct VNetHdr VNETHDR;
238typedef VNETHDR *PVNETHDR;
239AssertCompileSize(VNETHDR, 10);
240
241struct VNetHdrMrx
242{
243 VNETHDR Hdr;
244 uint16_t u16NumBufs;
245};
246typedef struct VNetHdrMrx VNETHDRMRX;
247typedef VNETHDRMRX *PVNETHDRMRX;
248AssertCompileSize(VNETHDRMRX, 12);
249
250AssertCompileMemberOffset(VNETSTATE, VPCI, 0);
251
252#define VNET_OK 0
253#define VNET_ERROR 1
254typedef uint8_t VNETCTLACK;
255
256#define VNET_CTRL_CLS_RX_MODE 0
257#define VNET_CTRL_CMD_RX_MODE_PROMISC 0
258#define VNET_CTRL_CMD_RX_MODE_ALLMULTI 1
259
260#define VNET_CTRL_CLS_MAC 1
261#define VNET_CTRL_CMD_MAC_TABLE_SET 0
262
263#define VNET_CTRL_CLS_VLAN 2
264#define VNET_CTRL_CMD_VLAN_ADD 0
265#define VNET_CTRL_CMD_VLAN_DEL 1
266
267
268struct VNetCtlHdr
269{
270 uint8_t u8Class;
271 uint8_t u8Command;
272};
273typedef struct VNetCtlHdr VNETCTLHDR;
274typedef VNETCTLHDR *PVNETCTLHDR;
275AssertCompileSize(VNETCTLHDR, 2);
276
277#ifdef IN_RING3
278
279/** Returns true if large packets are written into several RX buffers. */
280DECLINLINE(bool) vnetMergeableRxBuffers(PVNETSTATE pThis)
281{
282 return !!(pThis->VPCI.uGuestFeatures & VNET_F_MRG_RXBUF);
283}
284
285DECLINLINE(int) vnetCsEnter(PVNETSTATE pThis, int rcBusy)
286{
287 return vpciCsEnter(&pThis->VPCI, rcBusy);
288}
289
290DECLINLINE(void) vnetCsLeave(PVNETSTATE pThis)
291{
292 vpciCsLeave(&pThis->VPCI);
293}
294
295#endif /* IN_RING3 */
296
297DECLINLINE(int) vnetCsRxEnter(PVNETSTATE pThis, int rcBusy)
298{
299 RT_NOREF_PV(pThis);
300 RT_NOREF_PV(rcBusy);
301 // STAM_PROFILE_START(&pThis->CTXSUFF(StatCsRx), a);
302 // int rc = PDMCritSectEnter(&pThis->csRx, rcBusy);
303 // STAM_PROFILE_STOP(&pThis->CTXSUFF(StatCsRx), a);
304 // return rc;
305 return VINF_SUCCESS;
306}
307
308DECLINLINE(void) vnetCsRxLeave(PVNETSTATE pThis)
309{
310 RT_NOREF_PV(pThis);
311 // PDMCritSectLeave(&pThis->csRx);
312}
313
314#ifdef IN_RING3
315/**
316 * Dump a packet to debug log.
317 *
318 * @param pThis The device state structure.
319 * @param pbPacket The packet.
320 * @param cb The size of the packet.
321 * @param pszText A string denoting direction of packet transfer.
322 */
323DECLINLINE(void) vnetPacketDump(PVNETSTATE pThis, const uint8_t *pbPacket, size_t cb, const char *pszText)
324{
325# ifdef DEBUG
326# if 0
327 Log(("%s %s packet #%d (%d bytes):\n",
328 INSTANCE(pThis), pszText, ++pThis->u32PktNo, cb));
329 Log3(("%.*Rhxd\n", cb, pbPacket));
330# else
331 vboxEthPacketDump(INSTANCE(pThis), pszText, pbPacket, (uint32_t)cb);
332# endif
333# else
334 RT_NOREF4(pThis, pbPacket, cb, pszText);
335# endif
336}
337#endif /* IN_RING3 */
338
339/**
340 * Print features given in uFeatures to debug log.
341 *
342 * @param pThis The device state structure.
343 * @param fFeatures Descriptions of which features to print.
344 * @param pcszText A string to print before the list of features.
345 */
346DECLINLINE(void) vnetPrintFeatures(PVNETSTATE pThis, uint32_t fFeatures, const char *pcszText)
347{
348#ifdef DEBUG
349 static struct
350 {
351 uint32_t uMask;
352 const char *pcszDesc;
353 } const s_aFeatures[] =
354 {
355 { VNET_F_CSUM, "host handles pkts w/ partial csum" },
356 { VNET_F_GUEST_CSUM, "guest handles pkts w/ partial csum" },
357 { VNET_F_MAC, "host has given MAC address" },
358 { VNET_F_GSO, "host handles pkts w/ any GSO type" },
359 { VNET_F_GUEST_TSO4, "guest can handle TSOv4 in" },
360 { VNET_F_GUEST_TSO6, "guest can handle TSOv6 in" },
361 { VNET_F_GUEST_ECN, "guest can handle TSO[6] w/ ECN in" },
362 { VNET_F_GUEST_UFO, "guest can handle UFO in" },
363 { VNET_F_HOST_TSO4, "host can handle TSOv4 in" },
364 { VNET_F_HOST_TSO6, "host can handle TSOv6 in" },
365 { VNET_F_HOST_ECN, "host can handle TSO[6] w/ ECN in" },
366 { VNET_F_HOST_UFO, "host can handle UFO in" },
367 { VNET_F_MRG_RXBUF, "host can merge receive buffers" },
368 { VNET_F_STATUS, "virtio_net_config.status available" },
369 { VNET_F_CTRL_VQ, "control channel available" },
370 { VNET_F_CTRL_RX, "control channel RX mode support" },
371 { VNET_F_CTRL_VLAN, "control channel VLAN filtering" }
372 };
373
374 Log3(("%s %s:\n", INSTANCE(pThis), pcszText));
375 for (unsigned i = 0; i < RT_ELEMENTS(s_aFeatures); ++i)
376 {
377 if (s_aFeatures[i].uMask & fFeatures)
378 Log3(("%s --> %s\n", INSTANCE(pThis), s_aFeatures[i].pcszDesc));
379 }
380#else /* !DEBUG */
381 RT_NOREF3(pThis, fFeatures, pcszText);
382#endif /* !DEBUG */
383}
384
385static DECLCALLBACK(uint32_t) vnetIoCb_GetHostFeatures(void *pvState)
386{
387 RT_NOREF_PV(pvState);
388
389 /* We support:
390 * - Host-provided MAC address
391 * - Link status reporting in config space
392 * - Control queue
393 * - RX mode setting
394 * - MAC filter table
395 * - VLAN filter
396 */
397 return VNET_F_MAC
398 | VNET_F_STATUS
399 | VNET_F_CTRL_VQ
400 | VNET_F_CTRL_RX
401 | VNET_F_CTRL_VLAN
402#ifdef VNET_WITH_GSO
403 | VNET_F_CSUM
404 | VNET_F_HOST_TSO4
405 | VNET_F_HOST_TSO6
406 | VNET_F_HOST_UFO
407 | VNET_F_GUEST_CSUM /* We expect the guest to accept partial TCP checksums (see @bugref{4796}) */
408 | VNET_F_GUEST_TSO4
409 | VNET_F_GUEST_TSO6
410 | VNET_F_GUEST_UFO
411#endif
412#ifdef VNET_WITH_MERGEABLE_RX_BUFS
413 | VNET_F_MRG_RXBUF
414#endif
415 ;
416}
417
418static DECLCALLBACK(uint32_t) vnetIoCb_GetHostMinimalFeatures(void *pvState)
419{
420 RT_NOREF_PV(pvState);
421 return VNET_F_MAC;
422}
423
424static DECLCALLBACK(void) vnetIoCb_SetHostFeatures(void *pvState, uint32_t fFeatures)
425{
426 /** @todo Nothing to do here yet */
427 PVNETSTATE pThis = (PVNETSTATE)pvState;
428 LogFlow(("%s vnetIoCb_SetHostFeatures: uFeatures=%x\n", INSTANCE(pThis), fFeatures));
429 vnetPrintFeatures(pThis, fFeatures, "The guest negotiated the following features");
430}
431
432static DECLCALLBACK(int) vnetIoCb_GetConfig(void *pvState, uint32_t offCfg, uint32_t cb, void *data)
433{
434 PVNETSTATE pThis = (PVNETSTATE)pvState;
435 if (offCfg + cb > sizeof(struct VNetPCIConfig))
436 {
437 Log(("%s vnetIoCb_GetConfig: Read beyond the config structure is attempted (offCfg=%#x cb=%x).\n", INSTANCE(pThis), offCfg, cb));
438 return VERR_IOM_IOPORT_UNUSED;
439 }
440 memcpy(data, (uint8_t *)&pThis->config + offCfg, cb);
441 return VINF_SUCCESS;
442}
443
444static DECLCALLBACK(int) vnetIoCb_SetConfig(void *pvState, uint32_t offCfg, uint32_t cb, void *data)
445{
446 PVNETSTATE pThis = (PVNETSTATE)pvState;
447 if (offCfg + cb > sizeof(struct VNetPCIConfig))
448 {
449 Log(("%s vnetIoCb_SetConfig: Write beyond the config structure is attempted (offCfg=%#x cb=%x).\n", INSTANCE(pThis), offCfg, cb));
450 if (offCfg < sizeof(struct VNetPCIConfig))
451 memcpy((uint8_t *)&pThis->config + offCfg, data,
452 sizeof(struct VNetPCIConfig) - offCfg);
453 return VINF_SUCCESS;
454 }
455 memcpy((uint8_t *)&pThis->config + offCfg, data, cb);
456 return VINF_SUCCESS;
457}
458
459/**
460 * Hardware reset. Revert all registers to initial values.
461 *
462 * @param pThis The device state structure.
463 */
464static DECLCALLBACK(int) vnetIoCb_Reset(void *pvState)
465{
466 PVNETSTATE pThis = (PVNETSTATE)pvState;
467 Log(("%s Reset triggered\n", INSTANCE(pThis)));
468
469 int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
470 if (RT_UNLIKELY(rc != VINF_SUCCESS))
471 {
472 LogRel(("vnetIoCb_Reset failed to enter RX critical section!\n"));
473 return rc;
474 }
475 vpciReset(&pThis->VPCI);
476 vnetCsRxLeave(pThis);
477
478 /// @todo Implement reset
479 if (pThis->fCableConnected)
480 STATUS = VNET_S_LINK_UP;
481 else
482 STATUS = 0;
483 Log(("%s vnetIoCb_Reset: Link is %s\n", INSTANCE(pThis), pThis->fCableConnected ? "up" : "down"));
484
485 /*
486 * By default we pass all packets up since the older guests cannot control
487 * virtio mode.
488 */
489 pThis->fPromiscuous = true;
490 pThis->fAllMulti = false;
491 pThis->nMacFilterEntries = 0;
492 memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC));
493 memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter));
494 pThis->uIsTransmitting = 0;
495#ifndef IN_RING3
496 return VINF_IOM_R3_IOPORT_WRITE;
497#else
498 if (pThis->pDrv)
499 pThis->pDrv->pfnSetPromiscuousMode(pThis->pDrv, true);
500 return VINF_SUCCESS;
501#endif
502}
503
504#ifdef IN_RING3
505
506/**
507 * Wakeup the RX thread.
508 */
509static void vnetWakeupReceive(PPDMDEVINS pDevIns)
510{
511 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
512 if ( pThis->fMaybeOutOfSpace
513 && pThis->hEventMoreRxDescAvail != NIL_RTSEMEVENT)
514 {
515 STAM_COUNTER_INC(&pThis->StatRxOverflowWakeup);
516 Log(("%s Waking up Out-of-RX-space semaphore\n", INSTANCE(pThis)));
517 RTSemEventSignal(pThis->hEventMoreRxDescAvail);
518 }
519}
520
521
522/**
523 * Takes down the link temporarily if it's current status is up.
524 *
525 * This is used during restore and when replumbing the network link.
526 *
527 * The temporary link outage is supposed to indicate to the OS that all network
528 * connections have been lost and that it for instance is appropriate to
529 * renegotiate any DHCP lease.
530 *
531 * @param pThis The Virtual I/O network device state.
532 */
533static void vnetTempLinkDown(PVNETSTATE pThis)
534{
535 if (STATUS & VNET_S_LINK_UP)
536 {
537 STATUS &= ~VNET_S_LINK_UP;
538 vpciRaiseInterrupt(&pThis->VPCI, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
539 /* Restore the link back in 5 seconds. */
540 int rc = TMTimerSetMillies(pThis->pLinkUpTimer, pThis->cMsLinkUpDelay);
541 AssertRC(rc);
542 Log(("%s vnetTempLinkDown: Link is down temporarily\n", INSTANCE(pThis)));
543 }
544}
545
546
547/**
548 * @callback_method_impl{FNTMTIMERDEV, Link Up Timer handler.}
549 */
550static DECLCALLBACK(void) vnetLinkUpTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
551{
552 RT_NOREF(pTimer);
553 PVNETSTATE pThis = (PVNETSTATE)pvUser;
554
555 int rc = vnetCsEnter(pThis, VERR_SEM_BUSY);
556 if (RT_UNLIKELY(rc != VINF_SUCCESS))
557 return;
558 STATUS |= VNET_S_LINK_UP;
559 vpciRaiseInterrupt(&pThis->VPCI, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
560 vnetWakeupReceive(pDevIns);
561 vnetCsLeave(pThis);
562 Log(("%s vnetLinkUpTimer: Link is up\n", INSTANCE(pThis)));
563 if (pThis->pDrv)
564 pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, PDMNETWORKLINKSTATE_UP);
565}
566
567
568/**
569 * @callback_method_impl{FNPDMQUEUEDEV, Handler for the wakeup signaller queue.}
570 */
571static DECLCALLBACK(bool) vnetCanRxQueueConsumer(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem)
572{
573 RT_NOREF(pItem);
574 vnetWakeupReceive(pDevIns);
575 return true;
576}
577
578#endif /* IN_RING3 */
579
580/**
581 * This function is called when the driver becomes ready.
582 *
583 * @param pThis The device state structure.
584 */
585static DECLCALLBACK(void) vnetIoCb_Ready(void *pvState)
586{
587 PVNETSTATE pThis = (PVNETSTATE)pvState;
588 Log(("%s Driver became ready, waking up RX thread...\n", INSTANCE(pThis)));
589#ifdef IN_RING3
590 vnetWakeupReceive(pThis->VPCI.CTX_SUFF(pDevIns));
591#else
592 PPDMQUEUEITEMCORE pItem = PDMQueueAlloc(pThis->CTX_SUFF(pCanRxQueue));
593 if (pItem)
594 PDMQueueInsert(pThis->CTX_SUFF(pCanRxQueue), pItem);
595#endif
596}
597
598
599/**
600 * I/O port callbacks.
601 */
602static const VPCIIOCALLBACKS g_IOCallbacks =
603{
604 vnetIoCb_GetHostFeatures,
605 vnetIoCb_GetHostMinimalFeatures,
606 vnetIoCb_SetHostFeatures,
607 vnetIoCb_GetConfig,
608 vnetIoCb_SetConfig,
609 vnetIoCb_Reset,
610 vnetIoCb_Ready,
611};
612
613
614/**
615 * @callback_method_impl{FNIOMIOPORTIN}
616 */
617PDMBOTHCBDECL(int) vnetIOPortIn(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT port, uint32_t *pu32, unsigned cb)
618{
619 return vpciIOPortIn(pDevIns, pvUser, port, pu32, cb, &g_IOCallbacks);
620}
621
622
623/**
624 * @callback_method_impl{FNIOMIOPORTOUT}
625 */
626PDMBOTHCBDECL(int) vnetIOPortOut(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT port, uint32_t u32, unsigned cb)
627{
628 return vpciIOPortOut(pDevIns, pvUser, port, u32, cb, &g_IOCallbacks);
629}
630
631
632#ifdef IN_RING3
633
634/**
635 * Check if the device can receive data now.
636 * This must be called before the pfnRecieve() method is called.
637 *
638 * @remarks As a side effect this function enables queue notification
639 * if it cannot receive because the queue is empty.
640 * It disables notification if it can receive.
641 *
642 * @returns VERR_NET_NO_BUFFER_SPACE if it cannot.
643 * @param pInterface Pointer to the interface structure containing the called function pointer.
644 * @thread RX
645 */
646static int vnetCanReceive(PVNETSTATE pThis)
647{
648 int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
649 AssertRCReturn(rc, rc);
650
651 LogFlow(("%s vnetCanReceive\n", INSTANCE(pThis)));
652 if (!(pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK))
653 rc = VERR_NET_NO_BUFFER_SPACE;
654 else if (!vqueueIsReady(&pThis->VPCI, pThis->pRxQueue))
655 rc = VERR_NET_NO_BUFFER_SPACE;
656 else if (vqueueIsEmpty(&pThis->VPCI, pThis->pRxQueue))
657 {
658 vringSetNotification(&pThis->VPCI, &pThis->pRxQueue->VRing, true);
659 rc = VERR_NET_NO_BUFFER_SPACE;
660 }
661 else
662 {
663 vringSetNotification(&pThis->VPCI, &pThis->pRxQueue->VRing, false);
664 rc = VINF_SUCCESS;
665 }
666
667 LogFlow(("%s vnetCanReceive -> %Rrc\n", INSTANCE(pThis), rc));
668 vnetCsRxLeave(pThis);
669 return rc;
670}
671
672/**
673 * @interface_method_impl{PDMINETWORKDOWN,pfnWaitReceiveAvail}
674 */
675static DECLCALLBACK(int) vnetNetworkDown_WaitReceiveAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
676{
677 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, INetworkDown);
678 LogFlow(("%s vnetNetworkDown_WaitReceiveAvail(cMillies=%u)\n", INSTANCE(pThis), cMillies));
679 int rc = vnetCanReceive(pThis);
680
681 if (RT_SUCCESS(rc))
682 return VINF_SUCCESS;
683 if (RT_UNLIKELY(cMillies == 0))
684 return VERR_NET_NO_BUFFER_SPACE;
685
686 rc = VERR_INTERRUPTED;
687 ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, true);
688 STAM_PROFILE_START(&pThis->StatRxOverflow, a);
689
690 VMSTATE enmVMState;
691 while (RT_LIKELY( (enmVMState = PDMDevHlpVMState(pThis->VPCI.CTX_SUFF(pDevIns))) == VMSTATE_RUNNING
692 || enmVMState == VMSTATE_RUNNING_LS))
693 {
694 int rc2 = vnetCanReceive(pThis);
695 if (RT_SUCCESS(rc2))
696 {
697 rc = VINF_SUCCESS;
698 break;
699 }
700 Log(("%s vnetNetworkDown_WaitReceiveAvail: waiting cMillies=%u...\n", INSTANCE(pThis), cMillies));
701 RTSemEventWait(pThis->hEventMoreRxDescAvail, cMillies);
702 }
703 STAM_PROFILE_STOP(&pThis->StatRxOverflow, a);
704 ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, false);
705
706 LogFlow(("%s vnetNetworkDown_WaitReceiveAvail -> %d\n", INSTANCE(pThis), rc));
707 return rc;
708}
709
710
711/**
712 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
713 */
714static DECLCALLBACK(void *) vnetQueryInterface(struct PDMIBASE *pInterface, const char *pszIID)
715{
716 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, VPCI.IBase);
717 Assert(&pThis->VPCI.IBase == pInterface);
718
719 PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThis->INetworkDown);
720 PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThis->INetworkConfig);
721 return vpciQueryInterface(pInterface, pszIID);
722}
723
724/**
725 * Returns true if it is a broadcast packet.
726 *
727 * @returns true if destination address indicates broadcast.
728 * @param pvBuf The ethernet packet.
729 */
730DECLINLINE(bool) vnetIsBroadcast(const void *pvBuf)
731{
732 static const uint8_t s_abBcastAddr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
733 return memcmp(pvBuf, s_abBcastAddr, sizeof(s_abBcastAddr)) == 0;
734}
735
736/**
737 * Returns true if it is a multicast packet.
738 *
739 * @remarks returns true for broadcast packets as well.
740 * @returns true if destination address indicates multicast.
741 * @param pvBuf The ethernet packet.
742 */
743DECLINLINE(bool) vnetIsMulticast(const void *pvBuf)
744{
745 return (*(char*)pvBuf) & 1;
746}
747
748/**
749 * Determines if the packet is to be delivered to upper layer.
750 *
751 * @returns true if packet is intended for this node.
752 * @param pThis Pointer to the state structure.
753 * @param pvBuf The ethernet packet.
754 * @param cb Number of bytes available in the packet.
755 */
756static bool vnetAddressFilter(PVNETSTATE pThis, const void *pvBuf, size_t cb)
757{
758 if (pThis->fPromiscuous)
759 return true;
760
761 /* Ignore everything outside of our VLANs */
762 uint16_t *u16Ptr = (uint16_t*)pvBuf;
763 /* Compare TPID with VLAN Ether Type */
764 if ( u16Ptr[6] == RT_H2BE_U16(0x8100)
765 && !ASMBitTest(pThis->aVlanFilter, RT_BE2H_U16(u16Ptr[7]) & 0xFFF))
766 {
767 Log4(("%s vnetAddressFilter: not our VLAN, returning false\n", INSTANCE(pThis)));
768 return false;
769 }
770
771 if (vnetIsBroadcast(pvBuf))
772 return true;
773
774 if (pThis->fAllMulti && vnetIsMulticast(pvBuf))
775 return true;
776
777 if (!memcmp(pThis->config.mac.au8, pvBuf, sizeof(RTMAC)))
778 return true;
779 Log4(("%s vnetAddressFilter: %RTmac (conf) != %RTmac (dest)\n", INSTANCE(pThis), pThis->config.mac.au8, pvBuf));
780
781 for (unsigned i = 0; i < pThis->nMacFilterEntries; i++)
782 if (!memcmp(&pThis->aMacFilter[i], pvBuf, sizeof(RTMAC)))
783 return true;
784
785 Log2(("%s vnetAddressFilter: failed all tests, returning false, packet dump follows:\n", INSTANCE(pThis)));
786 vnetPacketDump(pThis, (const uint8_t *)pvBuf, cb, "<-- Incoming");
787
788 return false;
789}
790
791/**
792 * Pad and store received packet.
793 *
794 * @remarks Make sure that the packet appears to upper layer as one coming
795 * from real Ethernet: pad it and insert FCS.
796 *
797 * @returns VBox status code.
798 * @param pThis The device state structure.
799 * @param pvBuf The available data.
800 * @param cb Number of bytes available in the buffer.
801 * @thread RX
802 */
803static int vnetHandleRxPacket(PVNETSTATE pThis, const void *pvBuf, size_t cb,
804 PCPDMNETWORKGSO pGso)
805{
806 VNETHDRMRX Hdr;
807 unsigned uHdrLen;
808 RTGCPHYS addrHdrMrx = 0;
809
810 if (pGso)
811 {
812 Log2(("%s vnetHandleRxPacket: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n",
813 INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2));
814 Hdr.Hdr.u8Flags = VNETHDR_F_NEEDS_CSUM;
815 switch (pGso->u8Type)
816 {
817 case PDMNETWORKGSOTYPE_IPV4_TCP:
818 Hdr.Hdr.u8GSOType = VNETHDR_GSO_TCPV4;
819 Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETTCP, th_sum);
820 break;
821 case PDMNETWORKGSOTYPE_IPV6_TCP:
822 Hdr.Hdr.u8GSOType = VNETHDR_GSO_TCPV6;
823 Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETTCP, th_sum);
824 break;
825 case PDMNETWORKGSOTYPE_IPV4_UDP:
826 Hdr.Hdr.u8GSOType = VNETHDR_GSO_UDP;
827 Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETUDP, uh_sum);
828 break;
829 default:
830 return VERR_INVALID_PARAMETER;
831 }
832 Hdr.Hdr.u16HdrLen = pGso->cbHdrsTotal;
833 Hdr.Hdr.u16GSOSize = pGso->cbMaxSeg;
834 Hdr.Hdr.u16CSumStart = pGso->offHdr2;
835 STAM_REL_COUNTER_INC(&pThis->StatReceiveGSO);
836 }
837 else
838 {
839 Hdr.Hdr.u8Flags = 0;
840 Hdr.Hdr.u8GSOType = VNETHDR_GSO_NONE;
841 }
842
843 if (vnetMergeableRxBuffers(pThis))
844 uHdrLen = sizeof(VNETHDRMRX);
845 else
846 uHdrLen = sizeof(VNETHDR);
847
848 vnetPacketDump(pThis, (const uint8_t *)pvBuf, cb, "<-- Incoming");
849
850 unsigned int uOffset = 0;
851 unsigned int nElem;
852 for (nElem = 0; uOffset < cb; nElem++)
853 {
854 VQUEUEELEM elem;
855 unsigned int nSeg = 0, uElemSize = 0, cbReserved = 0;
856
857 if (!vqueueGet(&pThis->VPCI, pThis->pRxQueue, &elem))
858 {
859 /*
860 * @todo: It is possible to run out of RX buffers if only a few
861 * were added and we received a big packet.
862 */
863 Log(("%s vnetHandleRxPacket: Suddenly there is no space in receive queue!\n", INSTANCE(pThis)));
864 return VERR_INTERNAL_ERROR;
865 }
866
867 if (elem.nIn < 1)
868 {
869 Log(("%s vnetHandleRxPacket: No writable descriptors in receive queue!\n", INSTANCE(pThis)));
870 return VERR_INTERNAL_ERROR;
871 }
872
873 if (nElem == 0)
874 {
875 if (vnetMergeableRxBuffers(pThis))
876 {
877 addrHdrMrx = elem.aSegsIn[nSeg].addr;
878 cbReserved = uHdrLen;
879 }
880 else
881 {
882 /* The very first segment of the very first element gets the header. */
883 if (elem.aSegsIn[nSeg].cb != sizeof(VNETHDR))
884 {
885 Log(("%s vnetHandleRxPacket: The first descriptor does match the header size!\n", INSTANCE(pThis)));
886 return VERR_INTERNAL_ERROR;
887 }
888 elem.aSegsIn[nSeg++].pv = &Hdr;
889 }
890 uElemSize += uHdrLen;
891 }
892 while (nSeg < elem.nIn && uOffset < cb)
893 {
894 unsigned int uSize = (unsigned int)RT_MIN(elem.aSegsIn[nSeg].cb - (nSeg?0:cbReserved),
895 cb - uOffset);
896 elem.aSegsIn[nSeg++].pv = (uint8_t*)pvBuf + uOffset;
897 uOffset += uSize;
898 uElemSize += uSize;
899 }
900 STAM_PROFILE_START(&pThis->StatReceiveStore, a);
901 vqueuePut(&pThis->VPCI, pThis->pRxQueue, &elem, uElemSize, cbReserved);
902 STAM_PROFILE_STOP(&pThis->StatReceiveStore, a);
903 if (!vnetMergeableRxBuffers(pThis))
904 break;
905 cbReserved = 0;
906 }
907 if (vnetMergeableRxBuffers(pThis))
908 {
909 Hdr.u16NumBufs = nElem;
910 int rc = PDMDevHlpPCIPhysWrite(pThis->VPCI.CTX_SUFF(pDevIns), addrHdrMrx,
911 &Hdr, sizeof(Hdr));
912 if (RT_FAILURE(rc))
913 {
914 Log(("%s vnetHandleRxPacket: Failed to write merged RX buf header: %Rrc\n", INSTANCE(pThis), rc));
915 return rc;
916 }
917 }
918 vqueueSync(&pThis->VPCI, pThis->pRxQueue);
919 if (uOffset < cb)
920 {
921 Log(("%s vnetHandleRxPacket: Packet did not fit into RX queue (packet size=%u)!\n", INSTANCE(pThis), cb));
922 return VERR_TOO_MUCH_DATA;
923 }
924
925 return VINF_SUCCESS;
926}
927
928/**
929 * @interface_method_impl{PDMINETWORKDOWN,pfnReceiveGso}
930 */
931static DECLCALLBACK(int) vnetNetworkDown_ReceiveGso(PPDMINETWORKDOWN pInterface,
932 const void *pvBuf, size_t cb,
933 PCPDMNETWORKGSO pGso)
934{
935 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, INetworkDown);
936
937 if (pGso)
938 {
939 uint32_t uFeatures = pThis->VPCI.uGuestFeatures;
940
941 switch (pGso->u8Type)
942 {
943 case PDMNETWORKGSOTYPE_IPV4_TCP:
944 uFeatures &= VNET_F_GUEST_TSO4;
945 break;
946 case PDMNETWORKGSOTYPE_IPV6_TCP:
947 uFeatures &= VNET_F_GUEST_TSO6;
948 break;
949 case PDMNETWORKGSOTYPE_IPV4_UDP:
950 case PDMNETWORKGSOTYPE_IPV6_UDP:
951 uFeatures &= VNET_F_GUEST_UFO;
952 break;
953 default:
954 uFeatures = 0;
955 break;
956 }
957 if (!uFeatures)
958 {
959 Log2(("%s vnetNetworkDown_ReceiveGso: GSO type (0x%x) not supported\n", INSTANCE(pThis), pGso->u8Type));
960 return VERR_NOT_SUPPORTED;
961 }
962 }
963
964 Log2(("%s vnetNetworkDown_ReceiveGso: pvBuf=%p cb=%u pGso=%p\n", INSTANCE(pThis), pvBuf, cb, pGso));
965 int rc = vnetCanReceive(pThis);
966 if (RT_FAILURE(rc))
967 return rc;
968
969 /* Drop packets if VM is not running or cable is disconnected. */
970 VMSTATE enmVMState = PDMDevHlpVMState(pThis->VPCI.CTX_SUFF(pDevIns));
971 if (( enmVMState != VMSTATE_RUNNING
972 && enmVMState != VMSTATE_RUNNING_LS)
973 || !(STATUS & VNET_S_LINK_UP))
974 return VINF_SUCCESS;
975
976 STAM_PROFILE_START(&pThis->StatReceive, a);
977 vpciSetReadLed(&pThis->VPCI, true);
978 if (vnetAddressFilter(pThis, pvBuf, cb))
979 {
980 rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
981 if (RT_SUCCESS(rc))
982 {
983 rc = vnetHandleRxPacket(pThis, pvBuf, cb, pGso);
984 STAM_REL_COUNTER_ADD(&pThis->StatReceiveBytes, cb);
985 vnetCsRxLeave(pThis);
986 }
987 }
988 vpciSetReadLed(&pThis->VPCI, false);
989 STAM_PROFILE_STOP(&pThis->StatReceive, a);
990 return rc;
991}
992
993/**
994 * @interface_method_impl{PDMINETWORKDOWN,pfnReceive}
995 */
996static DECLCALLBACK(int) vnetNetworkDown_Receive(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
997{
998 return vnetNetworkDown_ReceiveGso(pInterface, pvBuf, cb, NULL);
999}
1000
1001/**
1002 * Gets the current Media Access Control (MAC) address.
1003 *
1004 * @returns VBox status code.
1005 * @param pInterface Pointer to the interface structure containing the called function pointer.
1006 * @param pMac Where to store the MAC address.
1007 * @thread EMT
1008 */
1009static DECLCALLBACK(int) vnetGetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
1010{
1011 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, INetworkConfig);
1012 memcpy(pMac, pThis->config.mac.au8, sizeof(RTMAC));
1013 return VINF_SUCCESS;
1014}
1015
1016/**
1017 * Gets the new link state.
1018 *
1019 * @returns The current link state.
1020 * @param pInterface Pointer to the interface structure containing the called function pointer.
1021 * @thread EMT
1022 */
1023static DECLCALLBACK(PDMNETWORKLINKSTATE) vnetGetLinkState(PPDMINETWORKCONFIG pInterface)
1024{
1025 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, INetworkConfig);
1026 if (STATUS & VNET_S_LINK_UP)
1027 return PDMNETWORKLINKSTATE_UP;
1028 return PDMNETWORKLINKSTATE_DOWN;
1029}
1030
1031
1032/**
1033 * Sets the new link state.
1034 *
1035 * @returns VBox status code.
1036 * @param pInterface Pointer to the interface structure containing the called function pointer.
1037 * @param enmState The new link state
1038 */
1039static DECLCALLBACK(int) vnetSetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
1040{
1041 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, INetworkConfig);
1042 bool fOldUp = !!(STATUS & VNET_S_LINK_UP);
1043 bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
1044
1045 Log(("%s vnetSetLinkState: enmState=%d\n", INSTANCE(pThis), enmState));
1046 if (enmState == PDMNETWORKLINKSTATE_DOWN_RESUME)
1047 {
1048 if (fOldUp)
1049 {
1050 /*
1051 * We bother to bring the link down only if it was up previously. The UP link state
1052 * notification will be sent when the link actually goes up in vnetLinkUpTimer().
1053 */
1054 vnetTempLinkDown(pThis);
1055 if (pThis->pDrv)
1056 pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, enmState);
1057 }
1058 }
1059 else if (fNewUp != fOldUp)
1060 {
1061 if (fNewUp)
1062 {
1063 Log(("%s Link is up\n", INSTANCE(pThis)));
1064 STATUS |= VNET_S_LINK_UP;
1065 vpciRaiseInterrupt(&pThis->VPCI, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
1066 }
1067 else
1068 {
1069 /* The link was brought down explicitly, make sure it won't come up by timer. */
1070 TMTimerStop(pThis->pLinkUpTimer);
1071 Log(("%s Link is down\n", INSTANCE(pThis)));
1072 STATUS &= ~VNET_S_LINK_UP;
1073 vpciRaiseInterrupt(&pThis->VPCI, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
1074 }
1075 if (pThis->pDrv)
1076 pThis->pDrv->pfnNotifyLinkChanged(pThis->pDrv, enmState);
1077 }
1078 return VINF_SUCCESS;
1079}
1080
1081static DECLCALLBACK(void) vnetQueueReceive(void *pvState, PVQUEUE pQueue)
1082{
1083 RT_NOREF(pQueue);
1084 PVNETSTATE pThis = (PVNETSTATE)pvState;
1085 Log(("%s Receive buffers has been added, waking up receive thread.\n", INSTANCE(pThis)));
1086 vnetWakeupReceive(pThis->VPCI.CTX_SUFF(pDevIns));
1087}
1088
1089/**
1090 * Sets up the GSO context according to the Virtio header.
1091 *
1092 * @param pGso The GSO context to setup.
1093 * @param pCtx The context descriptor.
1094 */
1095DECLINLINE(PPDMNETWORKGSO) vnetSetupGsoCtx(PPDMNETWORKGSO pGso, VNETHDR const *pHdr)
1096{
1097 pGso->u8Type = PDMNETWORKGSOTYPE_INVALID;
1098
1099 if (pHdr->u8GSOType & VNETHDR_GSO_ECN)
1100 {
1101 AssertMsgFailed(("Unsupported flag in virtio header: ECN\n"));
1102 return NULL;
1103 }
1104 switch (pHdr->u8GSOType & ~VNETHDR_GSO_ECN)
1105 {
1106 case VNETHDR_GSO_TCPV4:
1107 pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_TCP;
1108 pGso->cbHdrsSeg = pHdr->u16HdrLen;
1109 break;
1110 case VNETHDR_GSO_TCPV6:
1111 pGso->u8Type = PDMNETWORKGSOTYPE_IPV6_TCP;
1112 pGso->cbHdrsSeg = pHdr->u16HdrLen;
1113 break;
1114 case VNETHDR_GSO_UDP:
1115 pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_UDP;
1116 pGso->cbHdrsSeg = pHdr->u16CSumStart;
1117 break;
1118 default:
1119 return NULL;
1120 }
1121 if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1122 pGso->offHdr2 = pHdr->u16CSumStart;
1123 else
1124 {
1125 AssertMsgFailed(("GSO without checksum offloading!\n"));
1126 return NULL;
1127 }
1128 pGso->offHdr1 = sizeof(RTNETETHERHDR);
1129 pGso->cbHdrsTotal = pHdr->u16HdrLen;
1130 pGso->cbMaxSeg = pHdr->u16GSOSize;
1131 return pGso;
1132}
1133
1134DECLINLINE(uint16_t) vnetCSum16(const void *pvBuf, size_t cb)
1135{
1136 uint32_t csum = 0;
1137 uint16_t *pu16 = (uint16_t *)pvBuf;
1138
1139 while (cb > 1)
1140 {
1141 csum += *pu16++;
1142 cb -= 2;
1143 }
1144 if (cb)
1145 csum += *(uint8_t*)pu16;
1146 while (csum >> 16)
1147 csum = (csum >> 16) + (csum & 0xFFFF);
1148 return ~csum;
1149}
1150
1151DECLINLINE(void) vnetCompleteChecksum(uint8_t *pBuf, size_t cbSize, uint16_t uStart, uint16_t uOffset)
1152{
1153 AssertReturnVoid(uStart < cbSize);
1154 AssertReturnVoid(uStart + uOffset + sizeof(uint16_t) <= cbSize);
1155 *(uint16_t*)(pBuf + uStart + uOffset) = vnetCSum16(pBuf + uStart, cbSize - uStart);
1156}
1157
1158static int vnetTransmitFrame(PVNETSTATE pThis, PPDMSCATTERGATHER pSgBuf, PPDMNETWORKGSO pGso, PVNETHDR pHdr)
1159{
1160 vnetPacketDump(pThis, (uint8_t *)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, "--> Outgoing");
1161 if (pGso)
1162 {
1163 /* Some guests (RHEL) may report HdrLen excluding transport layer header! */
1164 /*
1165 * We cannot use cdHdrs provided by the guest because of different ways
1166 * it gets filled out by different versions of kernels.
1167 */
1168 //if (pGso->cbHdrs < pHdr->u16CSumStart + pHdr->u16CSumOffset + 2)
1169 {
1170 Log4(("%s vnetTransmitPendingPackets: HdrLen before adjustment %d.\n",
1171 INSTANCE(pThis), pGso->cbHdrsTotal));
1172 switch (pGso->u8Type)
1173 {
1174 case PDMNETWORKGSOTYPE_IPV4_TCP:
1175 case PDMNETWORKGSOTYPE_IPV6_TCP:
1176 pGso->cbHdrsTotal = pHdr->u16CSumStart +
1177 ((PRTNETTCP)(((uint8_t*)pSgBuf->aSegs[0].pvSeg) + pHdr->u16CSumStart))->th_off * 4;
1178 pGso->cbHdrsSeg = pGso->cbHdrsTotal;
1179 break;
1180 case PDMNETWORKGSOTYPE_IPV4_UDP:
1181 pGso->cbHdrsTotal = (uint8_t)(pHdr->u16CSumStart + sizeof(RTNETUDP));
1182 pGso->cbHdrsSeg = pHdr->u16CSumStart;
1183 break;
1184 }
1185 /* Update GSO structure embedded into the frame */
1186 ((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsTotal = pGso->cbHdrsTotal;
1187 ((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsSeg = pGso->cbHdrsSeg;
1188 Log4(("%s vnetTransmitPendingPackets: adjusted HdrLen to %d.\n",
1189 INSTANCE(pThis), pGso->cbHdrsTotal));
1190 }
1191 Log2(("%s vnetTransmitPendingPackets: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n",
1192 INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2));
1193 STAM_REL_COUNTER_INC(&pThis->StatTransmitGSO);
1194 }
1195 else if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1196 {
1197 STAM_REL_COUNTER_INC(&pThis->StatTransmitCSum);
1198 /*
1199 * This is not GSO frame but checksum offloading is requested.
1200 */
1201 vnetCompleteChecksum((uint8_t*)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed,
1202 pHdr->u16CSumStart, pHdr->u16CSumOffset);
1203 }
1204
1205 return pThis->pDrv->pfnSendBuf(pThis->pDrv, pSgBuf, false);
1206}
1207
1208static void vnetTransmitPendingPackets(PVNETSTATE pThis, PVQUEUE pQueue, bool fOnWorkerThread)
1209{
1210 /*
1211 * Only one thread is allowed to transmit at a time, others should skip
1212 * transmission as the packets will be picked up by the transmitting
1213 * thread.
1214 */
1215 if (!ASMAtomicCmpXchgU32(&pThis->uIsTransmitting, 1, 0))
1216 return;
1217
1218 if ((pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK) == 0)
1219 {
1220 Log(("%s Ignoring transmit requests from non-existent driver (status=0x%x).\n", INSTANCE(pThis), pThis->VPCI.uStatus));
1221 return;
1222 }
1223
1224 PPDMINETWORKUP pDrv = pThis->pDrv;
1225 if (pDrv)
1226 {
1227 int rc = pDrv->pfnBeginXmit(pDrv, fOnWorkerThread);
1228 Assert(rc == VINF_SUCCESS || rc == VERR_TRY_AGAIN);
1229 if (rc == VERR_TRY_AGAIN)
1230 {
1231 ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1232 return;
1233 }
1234 }
1235
1236 unsigned int uHdrLen;
1237 if (vnetMergeableRxBuffers(pThis))
1238 uHdrLen = sizeof(VNETHDRMRX);
1239 else
1240 uHdrLen = sizeof(VNETHDR);
1241
1242 Log3(("%s vnetTransmitPendingPackets: About to transmit %d pending packets\n",
1243 INSTANCE(pThis), vringReadAvailIndex(&pThis->VPCI, &pThis->pTxQueue->VRing) - pThis->pTxQueue->uNextAvailIndex));
1244
1245 vpciSetWriteLed(&pThis->VPCI, true);
1246
1247 VQUEUEELEM elem;
1248 /*
1249 * Do not remove descriptors from available ring yet, try to allocate the
1250 * buffer first.
1251 */
1252 while (vqueuePeek(&pThis->VPCI, pQueue, &elem))
1253 {
1254 unsigned int uOffset = 0;
1255 if (elem.nOut < 2 || elem.aSegsOut[0].cb != uHdrLen)
1256 {
1257 Log(("%s vnetQueueTransmit: The first segment is not the header! (%u < 2 || %u != %u).\n",
1258 INSTANCE(pThis), elem.nOut, elem.aSegsOut[0].cb, uHdrLen));
1259 break; /* For now we simply ignore the header, but it must be there anyway! */
1260 }
1261 else
1262 {
1263 unsigned int uSize = 0;
1264 STAM_PROFILE_ADV_START(&pThis->StatTransmit, a);
1265 /* Compute total frame size. */
1266 for (unsigned int i = 1; i < elem.nOut && uSize < VNET_MAX_FRAME_SIZE; i++)
1267 uSize += elem.aSegsOut[i].cb;
1268 Log5(("%s vnetTransmitPendingPackets: complete frame is %u bytes.\n", INSTANCE(pThis), uSize));
1269 Assert(uSize <= VNET_MAX_FRAME_SIZE);
1270 /* Truncate oversized frames. */
1271 if (uSize > VNET_MAX_FRAME_SIZE)
1272 uSize = VNET_MAX_FRAME_SIZE;
1273 if (pThis->pDrv)
1274 {
1275 VNETHDR Hdr;
1276 PDMNETWORKGSO Gso, *pGso;
1277
1278 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns), elem.aSegsOut[0].addr,
1279 &Hdr, sizeof(Hdr));
1280
1281 STAM_REL_COUNTER_INC(&pThis->StatTransmitPackets);
1282
1283 STAM_PROFILE_START(&pThis->StatTransmitSend, a);
1284
1285 pGso = vnetSetupGsoCtx(&Gso, &Hdr);
1286 /** @todo Optimize away the extra copying! (lazy bird) */
1287 PPDMSCATTERGATHER pSgBuf;
1288 int rc = pThis->pDrv->pfnAllocBuf(pThis->pDrv, uSize, pGso, &pSgBuf);
1289 if (RT_SUCCESS(rc))
1290 {
1291 Assert(pSgBuf->cSegs == 1);
1292 pSgBuf->cbUsed = uSize;
1293 /* Assemble a complete frame. */
1294 for (unsigned int i = 1; i < elem.nOut && uSize > 0; i++)
1295 {
1296 unsigned int cbSegment = RT_MIN(uSize, elem.aSegsOut[i].cb);
1297 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns), elem.aSegsOut[i].addr,
1298 ((uint8_t*)pSgBuf->aSegs[0].pvSeg) + uOffset,
1299 cbSegment);
1300 uOffset += cbSegment;
1301 uSize -= cbSegment;
1302 }
1303 rc = vnetTransmitFrame(pThis, pSgBuf, pGso, &Hdr);
1304 }
1305 else
1306 {
1307 Log4(("virtio-net: failed to allocate SG buffer: size=%u rc=%Rrc\n", uSize, rc));
1308 STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1309 STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1310 /* Stop trying to fetch TX descriptors until we get more bandwidth. */
1311 break;
1312 }
1313
1314 STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1315 STAM_REL_COUNTER_ADD(&pThis->StatTransmitBytes, uOffset);
1316 }
1317 }
1318 /* Remove this descriptor chain from the available ring */
1319 vqueueSkip(&pThis->VPCI, pQueue);
1320 vqueuePut(&pThis->VPCI, pQueue, &elem, sizeof(VNETHDR) + uOffset);
1321 vqueueSync(&pThis->VPCI, pQueue);
1322 STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1323 }
1324 vpciSetWriteLed(&pThis->VPCI, false);
1325
1326 if (pDrv)
1327 pDrv->pfnEndXmit(pDrv);
1328 ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1329}
1330
1331/**
1332 * @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
1333 */
1334static DECLCALLBACK(void) vnetNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
1335{
1336 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, INetworkDown);
1337 vnetTransmitPendingPackets(pThis, pThis->pTxQueue, false /*fOnWorkerThread*/);
1338}
1339
1340#ifdef VNET_TX_DELAY
1341
1342static DECLCALLBACK(void) vnetQueueTransmit(void *pvState, PVQUEUE pQueue)
1343{
1344 PVNETSTATE pThis = (PVNETSTATE)pvState;
1345
1346 if (TMTimerIsActive(pThis->CTX_SUFF(pTxTimer)))
1347 {
1348 TMTimerStop(pThis->CTX_SUFF(pTxTimer));
1349 Log3(("%s vnetQueueTransmit: Got kicked with notification disabled, re-enable notification and flush TX queue\n", INSTANCE(pThis)));
1350 vnetTransmitPendingPackets(pThis, pQueue, false /*fOnWorkerThread*/);
1351 if (RT_FAILURE(vnetCsEnter(pThis, VERR_SEM_BUSY)))
1352 LogRel(("vnetQueueTransmit: Failed to enter critical section!/n"));
1353 else
1354 {
1355 vringSetNotification(&pThis->VPCI, &pThis->pTxQueue->VRing, true);
1356 vnetCsLeave(pThis);
1357 }
1358 }
1359 else
1360 {
1361 if (RT_FAILURE(vnetCsEnter(pThis, VERR_SEM_BUSY)))
1362 LogRel(("vnetQueueTransmit: Failed to enter critical section!/n"));
1363 else
1364 {
1365 vringSetNotification(&pThis->VPCI, &pThis->pTxQueue->VRing, false);
1366 TMTimerSetMicro(pThis->CTX_SUFF(pTxTimer), VNET_TX_DELAY);
1367 pThis->u64NanoTS = RTTimeNanoTS();
1368 vnetCsLeave(pThis);
1369 }
1370 }
1371}
1372
1373/**
1374 * @callback_method_impl{FNTMTIMERDEV, Transmit Delay Timer handler.}
1375 */
1376static DECLCALLBACK(void) vnetTxTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
1377{
1378 RT_NOREF(pDevIns, pTimer);
1379 PVNETSTATE pThis = (PVNETSTATE)pvUser;
1380
1381 uint32_t u32MicroDiff = (uint32_t)((RTTimeNanoTS() - pThis->u64NanoTS)/1000);
1382 if (u32MicroDiff < pThis->u32MinDiff)
1383 pThis->u32MinDiff = u32MicroDiff;
1384 if (u32MicroDiff > pThis->u32MaxDiff)
1385 pThis->u32MaxDiff = u32MicroDiff;
1386 pThis->u32AvgDiff = (pThis->u32AvgDiff * pThis->u32i + u32MicroDiff) / (pThis->u32i + 1);
1387 pThis->u32i++;
1388 Log3(("vnetTxTimer: Expired, diff %9d usec, avg %9d usec, min %9d usec, max %9d usec\n",
1389 u32MicroDiff, pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
1390
1391// Log3(("%s vnetTxTimer: Expired\n", INSTANCE(pThis)));
1392 vnetTransmitPendingPackets(pThis, pThis->pTxQueue, false /*fOnWorkerThread*/);
1393 if (RT_FAILURE(vnetCsEnter(pThis, VERR_SEM_BUSY)))
1394 {
1395 LogRel(("vnetTxTimer: Failed to enter critical section!/n"));
1396 return;
1397 }
1398 vringSetNotification(&pThis->VPCI, &pThis->pTxQueue->VRing, true);
1399 vnetCsLeave(pThis);
1400}
1401
1402#else /* !VNET_TX_DELAY */
1403
1404static DECLCALLBACK(void) vnetQueueTransmit(void *pvState, PVQUEUE pQueue)
1405{
1406 PVNETSTATE pThis = (PVNETSTATE)pvState;
1407
1408 vnetTransmitPendingPackets(pThis, pQueue, false /*fOnWorkerThread*/);
1409}
1410
1411#endif /* !VNET_TX_DELAY */
1412
1413static uint8_t vnetControlRx(PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1414{
1415 uint8_t u8Ack = VNET_OK;
1416 uint8_t fOn, fDrvWasPromisc = pThis->fPromiscuous | pThis->fAllMulti;
1417 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1418 pElem->aSegsOut[1].addr,
1419 &fOn, sizeof(fOn));
1420 Log(("%s vnetControlRx: uCommand=%u fOn=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, fOn));
1421 switch (pCtlHdr->u8Command)
1422 {
1423 case VNET_CTRL_CMD_RX_MODE_PROMISC:
1424 pThis->fPromiscuous = !!fOn;
1425 break;
1426 case VNET_CTRL_CMD_RX_MODE_ALLMULTI:
1427 pThis->fAllMulti = !!fOn;
1428 break;
1429 default:
1430 u8Ack = VNET_ERROR;
1431 }
1432 if (fDrvWasPromisc != (pThis->fPromiscuous | pThis->fAllMulti) && pThis->pDrv)
1433 pThis->pDrv->pfnSetPromiscuousMode(pThis->pDrv,
1434 (pThis->fPromiscuous | pThis->fAllMulti));
1435
1436 return u8Ack;
1437}
1438
1439static uint8_t vnetControlMac(PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1440{
1441 uint32_t nMacs = 0;
1442
1443 if (pCtlHdr->u8Command != VNET_CTRL_CMD_MAC_TABLE_SET
1444 || pElem->nOut != 3
1445 || pElem->aSegsOut[1].cb < sizeof(nMacs)
1446 || pElem->aSegsOut[2].cb < sizeof(nMacs))
1447 {
1448 Log(("%s vnetControlMac: Segment layout is wrong (u8Command=%u nOut=%u cb1=%u cb2=%u)\n",
1449 INSTANCE(pThis), pCtlHdr->u8Command, pElem->nOut, pElem->aSegsOut[1].cb, pElem->aSegsOut[2].cb));
1450 return VNET_ERROR;
1451 }
1452
1453 /* Load unicast addresses */
1454 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1455 pElem->aSegsOut[1].addr,
1456 &nMacs, sizeof(nMacs));
1457
1458 if (pElem->aSegsOut[1].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1459 {
1460 Log(("%s vnetControlMac: The unicast mac segment is too small (nMacs=%u cb=%u)\n",
1461 INSTANCE(pThis), nMacs, pElem->aSegsOut[1].cb));
1462 return VNET_ERROR;
1463 }
1464
1465 if (nMacs > VNET_MAC_FILTER_LEN)
1466 {
1467 Log(("%s vnetControlMac: MAC table is too big, have to use promiscuous mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1468 pThis->fPromiscuous = true;
1469 }
1470 else
1471 {
1472 if (nMacs)
1473 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1474 pElem->aSegsOut[1].addr + sizeof(nMacs),
1475 pThis->aMacFilter, nMacs * sizeof(RTMAC));
1476 pThis->nMacFilterEntries = nMacs;
1477#ifdef DEBUG
1478 Log(("%s vnetControlMac: unicast macs:\n", INSTANCE(pThis)));
1479 for(unsigned i = 0; i < nMacs; i++)
1480 Log((" %RTmac\n", &pThis->aMacFilter[i]));
1481#endif /* DEBUG */
1482 }
1483
1484 /* Load multicast addresses */
1485 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1486 pElem->aSegsOut[2].addr,
1487 &nMacs, sizeof(nMacs));
1488
1489 if (pElem->aSegsOut[2].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1490 {
1491 Log(("%s vnetControlMac: The multicast mac segment is too small (nMacs=%u cb=%u)\n",
1492 INSTANCE(pThis), nMacs, pElem->aSegsOut[2].cb));
1493 return VNET_ERROR;
1494 }
1495
1496 if (nMacs > VNET_MAC_FILTER_LEN - pThis->nMacFilterEntries)
1497 {
1498 Log(("%s vnetControlMac: MAC table is too big, have to use allmulti mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1499 pThis->fAllMulti = true;
1500 }
1501 else
1502 {
1503 if (nMacs)
1504 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1505 pElem->aSegsOut[2].addr + sizeof(nMacs),
1506 &pThis->aMacFilter[pThis->nMacFilterEntries],
1507 nMacs * sizeof(RTMAC));
1508#ifdef DEBUG
1509 Log(("%s vnetControlMac: multicast macs:\n", INSTANCE(pThis)));
1510 for(unsigned i = 0; i < nMacs; i++)
1511 Log((" %RTmac\n",
1512 &pThis->aMacFilter[i+pThis->nMacFilterEntries]));
1513#endif /* DEBUG */
1514 pThis->nMacFilterEntries += nMacs;
1515 }
1516
1517 return VNET_OK;
1518}
1519
1520static uint8_t vnetControlVlan(PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1521{
1522 uint8_t u8Ack = VNET_OK;
1523 uint16_t u16Vid;
1524
1525 if (pElem->nOut != 2 || pElem->aSegsOut[1].cb != sizeof(u16Vid))
1526 {
1527 Log(("%s vnetControlVlan: Segment layout is wrong (u8Command=%u nOut=%u cb=%u)\n",
1528 INSTANCE(pThis), pCtlHdr->u8Command, pElem->nOut, pElem->aSegsOut[1].cb));
1529 return VNET_ERROR;
1530 }
1531
1532 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1533 pElem->aSegsOut[1].addr,
1534 &u16Vid, sizeof(u16Vid));
1535
1536 if (u16Vid >= VNET_MAX_VID)
1537 {
1538 Log(("%s vnetControlVlan: VLAN ID is out of range (VID=%u)\n", INSTANCE(pThis), u16Vid));
1539 return VNET_ERROR;
1540 }
1541
1542 Log(("%s vnetControlVlan: uCommand=%u VID=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, u16Vid));
1543
1544 switch (pCtlHdr->u8Command)
1545 {
1546 case VNET_CTRL_CMD_VLAN_ADD:
1547 ASMBitSet(pThis->aVlanFilter, u16Vid);
1548 break;
1549 case VNET_CTRL_CMD_VLAN_DEL:
1550 ASMBitClear(pThis->aVlanFilter, u16Vid);
1551 break;
1552 default:
1553 u8Ack = VNET_ERROR;
1554 }
1555
1556 return u8Ack;
1557}
1558
1559
1560static DECLCALLBACK(void) vnetQueueControl(void *pvState, PVQUEUE pQueue)
1561{
1562 PVNETSTATE pThis = (PVNETSTATE)pvState;
1563 uint8_t u8Ack;
1564 VQUEUEELEM elem;
1565 while (vqueueGet(&pThis->VPCI, pQueue, &elem))
1566 {
1567 if (elem.nOut < 1 || elem.aSegsOut[0].cb < sizeof(VNETCTLHDR))
1568 {
1569 Log(("%s vnetQueueControl: The first 'out' segment is not the header! (%u < 1 || %u < %u).\n",
1570 INSTANCE(pThis), elem.nOut, elem.aSegsOut[0].cb,sizeof(VNETCTLHDR)));
1571 break; /* Skip the element and hope the next one is good. */
1572 }
1573 else if ( elem.nIn < 1
1574 || elem.aSegsIn[elem.nIn - 1].cb < sizeof(VNETCTLACK))
1575 {
1576 Log(("%s vnetQueueControl: The last 'in' segment is too small to hold the acknowledge! (%u < 1 || %u < %u).\n",
1577 INSTANCE(pThis), elem.nIn, elem.aSegsIn[elem.nIn - 1].cb, sizeof(VNETCTLACK)));
1578 break; /* Skip the element and hope the next one is good. */
1579 }
1580 else
1581 {
1582 VNETCTLHDR CtlHdr;
1583 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1584 elem.aSegsOut[0].addr,
1585 &CtlHdr, sizeof(CtlHdr));
1586 switch (CtlHdr.u8Class)
1587 {
1588 case VNET_CTRL_CLS_RX_MODE:
1589 u8Ack = vnetControlRx(pThis, &CtlHdr, &elem);
1590 break;
1591 case VNET_CTRL_CLS_MAC:
1592 u8Ack = vnetControlMac(pThis, &CtlHdr, &elem);
1593 break;
1594 case VNET_CTRL_CLS_VLAN:
1595 u8Ack = vnetControlVlan(pThis, &CtlHdr, &elem);
1596 break;
1597 default:
1598 u8Ack = VNET_ERROR;
1599 }
1600 Log(("%s Processed control message %u, ack=%u.\n", INSTANCE(pThis), CtlHdr.u8Class, u8Ack));
1601 PDMDevHlpPCIPhysWrite(pThis->VPCI.CTX_SUFF(pDevIns),
1602 elem.aSegsIn[elem.nIn - 1].addr,
1603 &u8Ack, sizeof(u8Ack));
1604 }
1605 vqueuePut(&pThis->VPCI, pQueue, &elem, sizeof(u8Ack));
1606 vqueueSync(&pThis->VPCI, pQueue);
1607 }
1608}
1609
1610
1611/* -=-=-=-=- Saved state -=-=-=-=- */
1612
1613/**
1614 * Saves the configuration.
1615 *
1616 * @param pThis The VNET state.
1617 * @param pSSM The handle to the saved state.
1618 */
1619static void vnetSaveConfig(PVNETSTATE pThis, PSSMHANDLE pSSM)
1620{
1621 SSMR3PutMem(pSSM, &pThis->macConfigured, sizeof(pThis->macConfigured));
1622}
1623
1624
1625/**
1626 * @callback_method_impl{FNSSMDEVLIVEEXEC}
1627 */
1628static DECLCALLBACK(int) vnetLiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
1629{
1630 RT_NOREF(uPass);
1631 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1632 vnetSaveConfig(pThis, pSSM);
1633 return VINF_SSM_DONT_CALL_AGAIN;
1634}
1635
1636
1637/**
1638 * @callback_method_impl{FNSSMDEVSAVEPREP}
1639 */
1640static DECLCALLBACK(int) vnetSavePrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1641{
1642 RT_NOREF(pSSM);
1643 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1644
1645 int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1646 if (RT_UNLIKELY(rc != VINF_SUCCESS))
1647 return rc;
1648 vnetCsRxLeave(pThis);
1649 return VINF_SUCCESS;
1650}
1651
1652
1653/**
1654 * @callback_method_impl{FNSSMDEVSAVEEXEC}
1655 */
1656static DECLCALLBACK(int) vnetSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1657{
1658 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1659
1660 /* Save config first */
1661 vnetSaveConfig(pThis, pSSM);
1662
1663 /* Save the common part */
1664 int rc = vpciSaveExec(&pThis->VPCI, pSSM);
1665 AssertRCReturn(rc, rc);
1666 /* Save device-specific part */
1667 rc = SSMR3PutMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac));
1668 AssertRCReturn(rc, rc);
1669 rc = SSMR3PutBool(pSSM, pThis->fPromiscuous);
1670 AssertRCReturn(rc, rc);
1671 rc = SSMR3PutBool(pSSM, pThis->fAllMulti);
1672 AssertRCReturn(rc, rc);
1673 rc = SSMR3PutU32( pSSM, pThis->nMacFilterEntries);
1674 AssertRCReturn(rc, rc);
1675 rc = SSMR3PutMem( pSSM, pThis->aMacFilter,
1676 pThis->nMacFilterEntries * sizeof(RTMAC));
1677 AssertRCReturn(rc, rc);
1678 rc = SSMR3PutMem( pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter));
1679 AssertRCReturn(rc, rc);
1680 Log(("%s State has been saved\n", INSTANCE(pThis)));
1681 return VINF_SUCCESS;
1682}
1683
1684
1685/**
1686 * @callback_method_impl{FNSSMDEVLOADPREP, Serializes the receive thread, it may
1687 * be working inside the critsect. }
1688 */
1689static DECLCALLBACK(int) vnetLoadPrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1690{
1691 RT_NOREF(pSSM);
1692 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1693
1694 int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1695 if (RT_UNLIKELY(rc != VINF_SUCCESS))
1696 return rc;
1697 vnetCsRxLeave(pThis);
1698 return VINF_SUCCESS;
1699}
1700
1701
1702/**
1703 * @callback_method_impl{FNSSMDEVLOADEXEC}
1704 */
1705static DECLCALLBACK(int) vnetLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1706{
1707 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1708 int rc;
1709
1710 /* config checks */
1711 RTMAC macConfigured;
1712 rc = SSMR3GetMem(pSSM, &macConfigured, sizeof(macConfigured));
1713 AssertRCReturn(rc, rc);
1714 if (memcmp(&macConfigured, &pThis->macConfigured, sizeof(macConfigured))
1715 && (uPass == 0 || !PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns)))
1716 LogRel(("%s: The mac address differs: config=%RTmac saved=%RTmac\n", INSTANCE(pThis), &pThis->macConfigured, &macConfigured));
1717
1718 rc = vpciLoadExec(&pThis->VPCI, pSSM, uVersion, uPass, VNET_N_QUEUES);
1719 AssertRCReturn(rc, rc);
1720
1721 if (uPass == SSM_PASS_FINAL)
1722 {
1723 rc = SSMR3GetMem( pSSM, pThis->config.mac.au8,
1724 sizeof(pThis->config.mac));
1725 AssertRCReturn(rc, rc);
1726
1727 if (uVersion > VIRTIO_SAVEDSTATE_VERSION_3_1_BETA1)
1728 {
1729 rc = SSMR3GetBool(pSSM, &pThis->fPromiscuous);
1730 AssertRCReturn(rc, rc);
1731 rc = SSMR3GetBool(pSSM, &pThis->fAllMulti);
1732 AssertRCReturn(rc, rc);
1733 rc = SSMR3GetU32(pSSM, &pThis->nMacFilterEntries);
1734 AssertRCReturn(rc, rc);
1735 rc = SSMR3GetMem(pSSM, pThis->aMacFilter,
1736 pThis->nMacFilterEntries * sizeof(RTMAC));
1737 AssertRCReturn(rc, rc);
1738 /* Clear the rest. */
1739 if (pThis->nMacFilterEntries < VNET_MAC_FILTER_LEN)
1740 memset(&pThis->aMacFilter[pThis->nMacFilterEntries],
1741 0,
1742 (VNET_MAC_FILTER_LEN - pThis->nMacFilterEntries)
1743 * sizeof(RTMAC));
1744 rc = SSMR3GetMem(pSSM, pThis->aVlanFilter,
1745 sizeof(pThis->aVlanFilter));
1746 AssertRCReturn(rc, rc);
1747 }
1748 else
1749 {
1750 pThis->fPromiscuous = true;
1751 pThis->fAllMulti = false;
1752 pThis->nMacFilterEntries = 0;
1753 memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC));
1754 memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter));
1755 if (pThis->pDrv)
1756 pThis->pDrv->pfnSetPromiscuousMode(pThis->pDrv, true);
1757 }
1758 }
1759
1760 return rc;
1761}
1762
1763
1764/**
1765 * @callback_method_impl{FNSSMDEVLOADDONE, Link status adjustments after
1766 * loading.}
1767 */
1768static DECLCALLBACK(int) vnetLoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1769{
1770 RT_NOREF(pSSM);
1771 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1772
1773 if (pThis->pDrv)
1774 pThis->pDrv->pfnSetPromiscuousMode(pThis->pDrv,
1775 (pThis->fPromiscuous | pThis->fAllMulti));
1776 /*
1777 * Indicate link down to the guest OS that all network connections have
1778 * been lost, unless we've been teleported here.
1779 */
1780 if (!PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns))
1781 vnetTempLinkDown(pThis);
1782
1783 return VINF_SUCCESS;
1784}
1785
1786
1787/* -=-=-=-=- PCI Device -=-=-=-=- */
1788
1789/**
1790 * @callback_method_impl{FNPCIIOREGIONMAP}
1791 */
1792static DECLCALLBACK(int) vnetMap(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, uint32_t iRegion,
1793 RTGCPHYS GCPhysAddress, RTGCPHYS cb, PCIADDRESSSPACE enmType)
1794{
1795 RT_NOREF(pPciDev, iRegion);
1796 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1797 int rc;
1798
1799 if (enmType != PCI_ADDRESS_SPACE_IO)
1800 {
1801 /* We should never get here */
1802 AssertMsgFailed(("Invalid PCI address space param in map callback"));
1803 return VERR_INTERNAL_ERROR;
1804 }
1805
1806 pThis->VPCI.IOPortBase = (RTIOPORT)GCPhysAddress;
1807 rc = PDMDevHlpIOPortRegister(pDevIns, pThis->VPCI.IOPortBase,
1808 cb, 0, vnetIOPortOut, vnetIOPortIn,
1809 NULL, NULL, "VirtioNet");
1810#ifdef VNET_GC_SUPPORT
1811 AssertRCReturn(rc, rc);
1812 rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->VPCI.IOPortBase,
1813 cb, 0, "vnetIOPortOut", "vnetIOPortIn",
1814 NULL, NULL, "VirtioNet");
1815 AssertRCReturn(rc, rc);
1816 rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->VPCI.IOPortBase,
1817 cb, 0, "vnetIOPortOut", "vnetIOPortIn",
1818 NULL, NULL, "VirtioNet");
1819#endif
1820 AssertRC(rc);
1821 return rc;
1822}
1823
1824
1825/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
1826
1827/**
1828 * @interface_method_impl{PDMDEVREG,pfnDetach}
1829 */
1830static DECLCALLBACK(void) vnetDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
1831{
1832 RT_NOREF(fFlags);
1833 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1834 Log(("%s vnetDetach:\n", INSTANCE(pThis)));
1835
1836 AssertLogRelReturnVoid(iLUN == 0);
1837
1838 int rc = vnetCsEnter(pThis, VERR_SEM_BUSY);
1839 if (RT_FAILURE(rc))
1840 {
1841 LogRel(("vnetDetach failed to enter critical section!\n"));
1842 return;
1843 }
1844
1845 /*
1846 * Zero some important members.
1847 */
1848 pThis->pDrvBase = NULL;
1849 pThis->pDrv = NULL;
1850
1851 vnetCsLeave(pThis);
1852}
1853
1854
1855/**
1856 * @interface_method_impl{PDMDEVREG,pfnAttach}
1857 */
1858static DECLCALLBACK(int) vnetAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
1859{
1860 RT_NOREF(fFlags);
1861 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1862 LogFlow(("%s vnetAttach:\n", INSTANCE(pThis)));
1863
1864 AssertLogRelReturn(iLUN == 0, VERR_PDM_NO_SUCH_LUN);
1865
1866 int rc = vnetCsEnter(pThis, VERR_SEM_BUSY);
1867 if (RT_FAILURE(rc))
1868 {
1869 LogRel(("vnetAttach failed to enter critical section!\n"));
1870 return rc;
1871 }
1872
1873 /*
1874 * Attach the driver.
1875 */
1876 rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->VPCI.IBase, &pThis->pDrvBase, "Network Port");
1877 if (RT_SUCCESS(rc))
1878 {
1879 if (rc == VINF_NAT_DNS)
1880 {
1881#ifdef RT_OS_LINUX
1882 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
1883 N_("A Domain Name Server (DNS) for NAT networking could not be determined. Please check your /etc/resolv.conf for <tt>nameserver</tt> entries. Either add one manually (<i>man resolv.conf</i>) or ensure that your host is correctly connected to an ISP. If you ignore this warning the guest will not be able to perform nameserver lookups and it will probably observe delays if trying so"));
1884#else
1885 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
1886 N_("A Domain Name Server (DNS) for NAT networking could not be determined. Ensure that your host is correctly connected to an ISP. If you ignore this warning the guest will not be able to perform nameserver lookups and it will probably observe delays if trying so"));
1887#endif
1888 }
1889 pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
1890 AssertMsgStmt(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
1891 rc = VERR_PDM_MISSING_INTERFACE_BELOW);
1892 }
1893 else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
1894 || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME)
1895 {
1896 /* This should never happen because this function is not called
1897 * if there is no driver to attach! */
1898 Log(("%s No attached driver!\n", INSTANCE(pThis)));
1899 }
1900
1901 /*
1902 * Temporary set the link down if it was up so that the guest
1903 * will know that we have change the configuration of the
1904 * network card
1905 */
1906 if (RT_SUCCESS(rc))
1907 vnetTempLinkDown(pThis);
1908
1909 vnetCsLeave(pThis);
1910 return rc;
1911
1912}
1913
1914
1915/**
1916 * @interface_method_impl{PDMDEVREG,pfnSuspend}
1917 */
1918static DECLCALLBACK(void) vnetSuspend(PPDMDEVINS pDevIns)
1919{
1920 /* Poke thread waiting for buffer space. */
1921 vnetWakeupReceive(pDevIns);
1922}
1923
1924
1925/**
1926 * @interface_method_impl{PDMDEVREG,pfnPowerOff}
1927 */
1928static DECLCALLBACK(void) vnetPowerOff(PPDMDEVINS pDevIns)
1929{
1930 /* Poke thread waiting for buffer space. */
1931 vnetWakeupReceive(pDevIns);
1932}
1933
1934
1935/**
1936 * @interface_method_impl{PDMDEVREG,pfnRelocate}
1937 */
1938static DECLCALLBACK(void) vnetRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
1939{
1940 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1941 vpciRelocate(pDevIns, offDelta);
1942 pThis->pCanRxQueueRC = PDMQueueRCPtr(pThis->pCanRxQueueR3);
1943#ifdef VNET_TX_DELAY
1944 pThis->pTxTimerRC = TMTimerRCPtr(pThis->pTxTimerR3);
1945#endif /* VNET_TX_DELAY */
1946 // TBD
1947}
1948
1949
1950/**
1951 * @interface_method_impl{PDMDEVREG,pfnDestruct}
1952 */
1953static DECLCALLBACK(int) vnetDestruct(PPDMDEVINS pDevIns)
1954{
1955 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1956 PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
1957
1958 LogRel(("TxTimer stats (avg/min/max): %7d usec %7d usec %7d usec\n",
1959 pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
1960 Log(("%s Destroying instance\n", INSTANCE(pThis)));
1961 if (pThis->hEventMoreRxDescAvail != NIL_RTSEMEVENT)
1962 {
1963 RTSemEventSignal(pThis->hEventMoreRxDescAvail);
1964 RTSemEventDestroy(pThis->hEventMoreRxDescAvail);
1965 pThis->hEventMoreRxDescAvail = NIL_RTSEMEVENT;
1966 }
1967
1968 // if (PDMCritSectIsInitialized(&pThis->csRx))
1969 // PDMR3CritSectDelete(&pThis->csRx);
1970
1971 return vpciDestruct(&pThis->VPCI);
1972}
1973
1974
1975/**
1976 * @interface_method_impl{PDMDEVREG,pfnConstruct}
1977 */
1978static DECLCALLBACK(int) vnetConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1979{
1980 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1981 int rc;
1982 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1983
1984 /* Initialize the instance data suffiencently for the destructor not to blow up. */
1985 pThis->hEventMoreRxDescAvail = NIL_RTSEMEVENT;
1986
1987 /* Do our own locking. */
1988 rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
1989 AssertRCReturn(rc, rc);
1990
1991 /* Initialize PCI part. */
1992 pThis->VPCI.IBase.pfnQueryInterface = vnetQueryInterface;
1993 rc = vpciConstruct(pDevIns, &pThis->VPCI, iInstance,
1994 VNET_NAME_FMT, VIRTIO_NET_ID,
1995 VNET_PCI_CLASS, VNET_N_QUEUES);
1996 pThis->pRxQueue = vpciAddQueue(&pThis->VPCI, 256, vnetQueueReceive, "RX ");
1997 pThis->pTxQueue = vpciAddQueue(&pThis->VPCI, 256, vnetQueueTransmit, "TX ");
1998 pThis->pCtlQueue = vpciAddQueue(&pThis->VPCI, 16, vnetQueueControl, "CTL");
1999
2000 Log(("%s Constructing new instance\n", INSTANCE(pThis)));
2001
2002 /*
2003 * Validate configuration.
2004 */
2005 if (!CFGMR3AreValuesValid(pCfg, "MAC\0" "CableConnected\0" "LineSpeed\0" "LinkUpDelay\0"))
2006 return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
2007 N_("Invalid configuration for VirtioNet device"));
2008
2009 /* Get config params */
2010 rc = CFGMR3QueryBytes(pCfg, "MAC", pThis->macConfigured.au8,
2011 sizeof(pThis->macConfigured));
2012 if (RT_FAILURE(rc))
2013 return PDMDEV_SET_ERROR(pDevIns, rc,
2014 N_("Configuration error: Failed to get MAC address"));
2015 rc = CFGMR3QueryBool(pCfg, "CableConnected", &pThis->fCableConnected);
2016 if (RT_FAILURE(rc))
2017 return PDMDEV_SET_ERROR(pDevIns, rc,
2018 N_("Configuration error: Failed to get the value of 'CableConnected'"));
2019 rc = CFGMR3QueryU32Def(pCfg, "LinkUpDelay", (uint32_t*)&pThis->cMsLinkUpDelay, 5000); /* ms */
2020 if (RT_FAILURE(rc))
2021 return PDMDEV_SET_ERROR(pDevIns, rc,
2022 N_("Configuration error: Failed to get the value of 'LinkUpDelay'"));
2023 Assert(pThis->cMsLinkUpDelay <= 300000); /* less than 5 minutes */
2024 if (pThis->cMsLinkUpDelay > 5000 || pThis->cMsLinkUpDelay < 100)
2025 {
2026 LogRel(("%s WARNING! Link up delay is set to %u seconds!\n",
2027 INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2028 }
2029 Log(("%s Link up delay is set to %u seconds\n",
2030 INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2031
2032
2033 vnetPrintFeatures(pThis, vnetIoCb_GetHostFeatures(pThis), "Device supports the following features");
2034
2035 /* Initialize PCI config space */
2036 memcpy(pThis->config.mac.au8, pThis->macConfigured.au8, sizeof(pThis->config.mac.au8));
2037 pThis->config.uStatus = 0;
2038
2039 /* Initialize state structure */
2040 pThis->u32PktNo = 1;
2041
2042 /* Interfaces */
2043 pThis->INetworkDown.pfnWaitReceiveAvail = vnetNetworkDown_WaitReceiveAvail;
2044 pThis->INetworkDown.pfnReceive = vnetNetworkDown_Receive;
2045 pThis->INetworkDown.pfnReceiveGso = vnetNetworkDown_ReceiveGso;
2046 pThis->INetworkDown.pfnXmitPending = vnetNetworkDown_XmitPending;
2047
2048 pThis->INetworkConfig.pfnGetMac = vnetGetMac;
2049 pThis->INetworkConfig.pfnGetLinkState = vnetGetLinkState;
2050 pThis->INetworkConfig.pfnSetLinkState = vnetSetLinkState;
2051
2052 /* Initialize critical section. */
2053 // char szTmp[sizeof(pThis->VPCI.szInstance) + 2];
2054 // RTStrPrintf(szTmp, sizeof(szTmp), "%sRX", pThis->VPCI.szInstance);
2055 // rc = PDMDevHlpCritSectInit(pDevIns, &pThis->csRx, szTmp);
2056 // if (RT_FAILURE(rc))
2057 // return rc;
2058
2059 /* Map our ports to IO space. */
2060 rc = PDMDevHlpPCIIORegionRegister(pDevIns, 0,
2061 VPCI_CONFIG + sizeof(VNetPCIConfig),
2062 PCI_ADDRESS_SPACE_IO, vnetMap);
2063 if (RT_FAILURE(rc))
2064 return rc;
2065
2066
2067 /* Register save/restore state handlers. */
2068 rc = PDMDevHlpSSMRegisterEx(pDevIns, VIRTIO_SAVEDSTATE_VERSION, sizeof(VNETSTATE), NULL,
2069 NULL, vnetLiveExec, NULL,
2070 vnetSavePrep, vnetSaveExec, NULL,
2071 vnetLoadPrep, vnetLoadExec, vnetLoadDone);
2072 if (RT_FAILURE(rc))
2073 return rc;
2074
2075 /* Create the RX notifier signaller. */
2076 rc = PDMDevHlpQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 1, 0,
2077 vnetCanRxQueueConsumer, true, "VNet-Rcv", &pThis->pCanRxQueueR3);
2078 if (RT_FAILURE(rc))
2079 return rc;
2080 pThis->pCanRxQueueR0 = PDMQueueR0Ptr(pThis->pCanRxQueueR3);
2081 pThis->pCanRxQueueRC = PDMQueueRCPtr(pThis->pCanRxQueueR3);
2082
2083 /* Create Link Up Timer */
2084 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetLinkUpTimer, pThis,
2085 TMTIMER_FLAGS_NO_CRIT_SECT,
2086 "VirtioNet Link Up Timer", &pThis->pLinkUpTimer);
2087 if (RT_FAILURE(rc))
2088 return rc;
2089
2090#ifdef VNET_TX_DELAY
2091 /* Create Transmit Delay Timer */
2092 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetTxTimer, pThis,
2093 TMTIMER_FLAGS_NO_CRIT_SECT,
2094 "VirtioNet TX Delay Timer", &pThis->pTxTimerR3);
2095 if (RT_FAILURE(rc))
2096 return rc;
2097 pThis->pTxTimerR0 = TMTimerR0Ptr(pThis->pTxTimerR3);
2098 pThis->pTxTimerRC = TMTimerRCPtr(pThis->pTxTimerR3);
2099
2100 pThis->u32i = pThis->u32AvgDiff = pThis->u32MaxDiff = 0;
2101 pThis->u32MinDiff = UINT32_MAX;
2102#endif /* VNET_TX_DELAY */
2103
2104 rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->VPCI.IBase, &pThis->pDrvBase, "Network Port");
2105 if (RT_SUCCESS(rc))
2106 {
2107 if (rc == VINF_NAT_DNS)
2108 {
2109 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
2110 N_("A Domain Name Server (DNS) for NAT networking could not be determined. Ensure that your host is correctly connected to an ISP. If you ignore this warning the guest will not be able to perform nameserver lookups and it will probably observe delays if trying so"));
2111 }
2112 pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
2113 AssertMsgReturn(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
2114 VERR_PDM_MISSING_INTERFACE_BELOW);
2115 }
2116 else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
2117 || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME )
2118 {
2119 /* No error! */
2120 Log(("%s This adapter is not attached to any network!\n", INSTANCE(pThis)));
2121 }
2122 else
2123 return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to attach the network LUN"));
2124
2125 rc = RTSemEventCreate(&pThis->hEventMoreRxDescAvail);
2126 if (RT_FAILURE(rc))
2127 return rc;
2128
2129 rc = vnetIoCb_Reset(pThis);
2130 AssertRC(rc);
2131
2132 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data received", "/Public/Net/VNet%u/BytesReceived", iInstance);
2133 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data transmitted", "/Public/Net/VNet%u/BytesTransmitted", iInstance);
2134
2135 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data received", "/Devices/VNet%d/ReceiveBytes", iInstance);
2136 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data transmitted", "/Devices/VNet%d/TransmitBytes", iInstance);
2137 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveGSO, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of received GSO packets", "/Devices/VNet%d/Packets/ReceiveGSO", iInstance);
2138 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitPackets, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of sent packets", "/Devices/VNet%d/Packets/Transmit", iInstance);
2139 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitGSO, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of sent GSO packets", "/Devices/VNet%d/Packets/Transmit-Gso", iInstance);
2140 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitCSum, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of completed TX checksums", "/Devices/VNet%d/Packets/Transmit-Csum", iInstance);
2141#if defined(VBOX_WITH_STATISTICS)
2142 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling receive", "/Devices/VNet%d/Receive/Total", iInstance);
2143 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveStore, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling receive storing", "/Devices/VNet%d/Receive/Store", iInstance);
2144 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRxOverflow, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_OCCURENCE, "Profiling RX overflows", "/Devices/VNet%d/RxOverflow", iInstance);
2145 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRxOverflowWakeup, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of RX overflow wakeups", "/Devices/VNet%d/RxOverflowWakeup", iInstance);
2146 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling transmits in HC", "/Devices/VNet%d/Transmit/Total", iInstance);
2147 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitSend, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling send transmit in HC", "/Devices/VNet%d/Transmit/Send", iInstance);
2148#endif /* VBOX_WITH_STATISTICS */
2149
2150 return VINF_SUCCESS;
2151}
2152
2153/**
2154 * The device registration structure.
2155 */
2156const PDMDEVREG g_DeviceVirtioNet =
2157{
2158 /* Structure version. PDM_DEVREG_VERSION defines the current version. */
2159 PDM_DEVREG_VERSION,
2160 /* Device name. */
2161 "virtio-net",
2162 /* Name of guest context module (no path).
2163 * Only evalutated if PDM_DEVREG_FLAGS_RC is set. */
2164 "VBoxDDRC.rc",
2165 /* Name of ring-0 module (no path).
2166 * Only evalutated if PDM_DEVREG_FLAGS_RC is set. */
2167 "VBoxDDR0.r0",
2168 /* The description of the device. The UTF-8 string pointed to shall, like this structure,
2169 * remain unchanged from registration till VM destruction. */
2170 "Virtio Ethernet.\n",
2171
2172 /* Flags, combination of the PDM_DEVREG_FLAGS_* \#defines. */
2173#ifdef VNET_GC_SUPPORT
2174 PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RC | PDM_DEVREG_FLAGS_R0,
2175#else
2176 PDM_DEVREG_FLAGS_DEFAULT_BITS,
2177#endif
2178 /* Device class(es), combination of the PDM_DEVREG_CLASS_* \#defines. */
2179 PDM_DEVREG_CLASS_NETWORK,
2180 /* Maximum number of instances (per VM). */
2181 ~0U,
2182 /* Size of the instance data. */
2183 sizeof(VNETSTATE),
2184
2185 /* pfnConstruct */
2186 vnetConstruct,
2187 /* pfnDestruct */
2188 vnetDestruct,
2189 /* pfnRelocate */
2190 vnetRelocate,
2191 /* pfnMemSetup. */
2192 NULL,
2193 /* pfnPowerOn */
2194 NULL,
2195 /* pfnReset */
2196 NULL,
2197 /* pfnSuspend */
2198 vnetSuspend,
2199 /* pfnResume */
2200 NULL,
2201 /* pfnAttach */
2202 vnetAttach,
2203 /* pfnDetach */
2204 vnetDetach,
2205 /* pfnQueryInterface */
2206 NULL,
2207 /* pfnInitComplete */
2208 NULL,
2209 /* pfnPowerOff */
2210 vnetPowerOff,
2211 /* pfnSoftReset */
2212 NULL,
2213
2214 /* u32VersionEnd */
2215 PDM_DEVREG_VERSION
2216};
2217
2218#endif /* IN_RING3 */
2219#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
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