VirtualBox

source: vbox/trunk/src/VBox/Devices/Network/DevVirtioNet.cpp@ 66058

Last change on this file since 66058 was 64390, checked in by vboxsync, 8 years ago

PDMPCIDEV: Dropped pDevIns as it isn't needed any longer.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 78.0 KB
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1/* $Id: DevVirtioNet.cpp 64390 2016-10-24 14:19:51Z 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.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 */
17
18
19/*********************************************************************************************************************************
20* Header Files *
21*********************************************************************************************************************************/
22#define LOG_GROUP LOG_GROUP_DEV_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, unsigned cbSize, uint16_t uStart, uint16_t uOffset)
1152{
1153 *(uint16_t*)(pBuf + uStart + uOffset) = vnetCSum16(pBuf + uStart, cbSize - uStart);
1154}
1155
1156static void vnetTransmitPendingPackets(PVNETSTATE pThis, PVQUEUE pQueue, bool fOnWorkerThread)
1157{
1158 /*
1159 * Only one thread is allowed to transmit at a time, others should skip
1160 * transmission as the packets will be picked up by the transmitting
1161 * thread.
1162 */
1163 if (!ASMAtomicCmpXchgU32(&pThis->uIsTransmitting, 1, 0))
1164 return;
1165
1166 if ((pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK) == 0)
1167 {
1168 Log(("%s Ignoring transmit requests from non-existent driver (status=0x%x).\n", INSTANCE(pThis), pThis->VPCI.uStatus));
1169 return;
1170 }
1171
1172 PPDMINETWORKUP pDrv = pThis->pDrv;
1173 if (pDrv)
1174 {
1175 int rc = pDrv->pfnBeginXmit(pDrv, fOnWorkerThread);
1176 Assert(rc == VINF_SUCCESS || rc == VERR_TRY_AGAIN);
1177 if (rc == VERR_TRY_AGAIN)
1178 {
1179 ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1180 return;
1181 }
1182 }
1183
1184 unsigned int uHdrLen;
1185 if (vnetMergeableRxBuffers(pThis))
1186 uHdrLen = sizeof(VNETHDRMRX);
1187 else
1188 uHdrLen = sizeof(VNETHDR);
1189
1190 Log3(("%s vnetTransmitPendingPackets: About to transmit %d pending packets\n",
1191 INSTANCE(pThis), vringReadAvailIndex(&pThis->VPCI, &pThis->pTxQueue->VRing) - pThis->pTxQueue->uNextAvailIndex));
1192
1193 vpciSetWriteLed(&pThis->VPCI, true);
1194
1195 VQUEUEELEM elem;
1196 /*
1197 * Do not remove descriptors from available ring yet, try to allocate the
1198 * buffer first.
1199 */
1200 while (vqueuePeek(&pThis->VPCI, pQueue, &elem))
1201 {
1202 unsigned int uOffset = 0;
1203 if (elem.nOut < 2 || elem.aSegsOut[0].cb != uHdrLen)
1204 {
1205 Log(("%s vnetQueueTransmit: The first segment is not the header! (%u < 2 || %u != %u).\n",
1206 INSTANCE(pThis), elem.nOut, elem.aSegsOut[0].cb, uHdrLen));
1207 break; /* For now we simply ignore the header, but it must be there anyway! */
1208 }
1209 else
1210 {
1211 unsigned int uSize = 0;
1212 STAM_PROFILE_ADV_START(&pThis->StatTransmit, a);
1213 /* Compute total frame size. */
1214 for (unsigned int i = 1; i < elem.nOut; i++)
1215 uSize += elem.aSegsOut[i].cb;
1216 Log5(("%s vnetTransmitPendingPackets: complete frame is %u bytes.\n", INSTANCE(pThis), uSize));
1217 Assert(uSize <= VNET_MAX_FRAME_SIZE);
1218 if (pThis->pDrv)
1219 {
1220 VNETHDR Hdr;
1221 PDMNETWORKGSO Gso, *pGso;
1222
1223 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns), elem.aSegsOut[0].addr,
1224 &Hdr, sizeof(Hdr));
1225
1226 STAM_REL_COUNTER_INC(&pThis->StatTransmitPackets);
1227
1228 STAM_PROFILE_START(&pThis->StatTransmitSend, a);
1229
1230 pGso = vnetSetupGsoCtx(&Gso, &Hdr);
1231 /** @todo Optimize away the extra copying! (lazy bird) */
1232 PPDMSCATTERGATHER pSgBuf;
1233 int rc = pThis->pDrv->pfnAllocBuf(pThis->pDrv, uSize, pGso, &pSgBuf);
1234 if (RT_SUCCESS(rc))
1235 {
1236 Assert(pSgBuf->cSegs == 1);
1237 /* Assemble a complete frame. */
1238 for (unsigned int i = 1; i < elem.nOut; i++)
1239 {
1240 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns), elem.aSegsOut[i].addr,
1241 ((uint8_t*)pSgBuf->aSegs[0].pvSeg) + uOffset,
1242 elem.aSegsOut[i].cb);
1243 uOffset += elem.aSegsOut[i].cb;
1244 }
1245 pSgBuf->cbUsed = uSize;
1246 vnetPacketDump(pThis, (uint8_t *)pSgBuf->aSegs[0].pvSeg, uSize, "--> Outgoing");
1247 if (pGso)
1248 {
1249 /* Some guests (RHEL) may report HdrLen excluding transport layer header! */
1250 /*
1251 * We cannot use cdHdrs provided by the guest because of different ways
1252 * it gets filled out by different versions of kernels.
1253 */
1254 //if (pGso->cbHdrs < Hdr.u16CSumStart + Hdr.u16CSumOffset + 2)
1255 {
1256 Log4(("%s vnetTransmitPendingPackets: HdrLen before adjustment %d.\n",
1257 INSTANCE(pThis), pGso->cbHdrsTotal));
1258 switch (pGso->u8Type)
1259 {
1260 case PDMNETWORKGSOTYPE_IPV4_TCP:
1261 case PDMNETWORKGSOTYPE_IPV6_TCP:
1262 pGso->cbHdrsTotal = Hdr.u16CSumStart +
1263 ((PRTNETTCP)(((uint8_t*)pSgBuf->aSegs[0].pvSeg) + Hdr.u16CSumStart))->th_off * 4;
1264 pGso->cbHdrsSeg = pGso->cbHdrsTotal;
1265 break;
1266 case PDMNETWORKGSOTYPE_IPV4_UDP:
1267 pGso->cbHdrsTotal = (uint8_t)(Hdr.u16CSumStart + sizeof(RTNETUDP));
1268 pGso->cbHdrsSeg = Hdr.u16CSumStart;
1269 break;
1270 }
1271 /* Update GSO structure embedded into the frame */
1272 ((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsTotal = pGso->cbHdrsTotal;
1273 ((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsSeg = pGso->cbHdrsSeg;
1274 Log4(("%s vnetTransmitPendingPackets: adjusted HdrLen to %d.\n",
1275 INSTANCE(pThis), pGso->cbHdrsTotal));
1276 }
1277 Log2(("%s vnetTransmitPendingPackets: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n",
1278 INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2));
1279 STAM_REL_COUNTER_INC(&pThis->StatTransmitGSO);
1280 }
1281 else if (Hdr.u8Flags & VNETHDR_F_NEEDS_CSUM)
1282 {
1283 STAM_REL_COUNTER_INC(&pThis->StatTransmitCSum);
1284 /*
1285 * This is not GSO frame but checksum offloading is requested.
1286 */
1287 vnetCompleteChecksum((uint8_t*)pSgBuf->aSegs[0].pvSeg, uSize,
1288 Hdr.u16CSumStart, Hdr.u16CSumOffset);
1289 }
1290
1291 rc = pThis->pDrv->pfnSendBuf(pThis->pDrv, pSgBuf, false);
1292 }
1293 else
1294 {
1295 Log4(("virtio-net: failed to allocate SG buffer: size=%u rc=%Rrc\n", uSize, rc));
1296 STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1297 STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1298 /* Stop trying to fetch TX descriptors until we get more bandwidth. */
1299 break;
1300 }
1301
1302 STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1303 STAM_REL_COUNTER_ADD(&pThis->StatTransmitBytes, uOffset);
1304 }
1305 }
1306 /* Remove this descriptor chain from the available ring */
1307 vqueueSkip(&pThis->VPCI, pQueue);
1308 vqueuePut(&pThis->VPCI, pQueue, &elem, sizeof(VNETHDR) + uOffset);
1309 vqueueSync(&pThis->VPCI, pQueue);
1310 STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1311 }
1312 vpciSetWriteLed(&pThis->VPCI, false);
1313
1314 if (pDrv)
1315 pDrv->pfnEndXmit(pDrv);
1316 ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1317}
1318
1319/**
1320 * @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
1321 */
1322static DECLCALLBACK(void) vnetNetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
1323{
1324 PVNETSTATE pThis = RT_FROM_MEMBER(pInterface, VNETSTATE, INetworkDown);
1325 vnetTransmitPendingPackets(pThis, pThis->pTxQueue, false /*fOnWorkerThread*/);
1326}
1327
1328#ifdef VNET_TX_DELAY
1329
1330static DECLCALLBACK(void) vnetQueueTransmit(void *pvState, PVQUEUE pQueue)
1331{
1332 PVNETSTATE pThis = (PVNETSTATE)pvState;
1333
1334 if (TMTimerIsActive(pThis->CTX_SUFF(pTxTimer)))
1335 {
1336 TMTimerStop(pThis->CTX_SUFF(pTxTimer));
1337 Log3(("%s vnetQueueTransmit: Got kicked with notification disabled, re-enable notification and flush TX queue\n", INSTANCE(pThis)));
1338 vnetTransmitPendingPackets(pThis, pQueue, false /*fOnWorkerThread*/);
1339 if (RT_FAILURE(vnetCsEnter(pThis, VERR_SEM_BUSY)))
1340 LogRel(("vnetQueueTransmit: Failed to enter critical section!/n"));
1341 else
1342 {
1343 vringSetNotification(&pThis->VPCI, &pThis->pTxQueue->VRing, true);
1344 vnetCsLeave(pThis);
1345 }
1346 }
1347 else
1348 {
1349 if (RT_FAILURE(vnetCsEnter(pThis, VERR_SEM_BUSY)))
1350 LogRel(("vnetQueueTransmit: Failed to enter critical section!/n"));
1351 else
1352 {
1353 vringSetNotification(&pThis->VPCI, &pThis->pTxQueue->VRing, false);
1354 TMTimerSetMicro(pThis->CTX_SUFF(pTxTimer), VNET_TX_DELAY);
1355 pThis->u64NanoTS = RTTimeNanoTS();
1356 vnetCsLeave(pThis);
1357 }
1358 }
1359}
1360
1361/**
1362 * @callback_method_impl{FNTMTIMERDEV, Transmit Delay Timer handler.}
1363 */
1364static DECLCALLBACK(void) vnetTxTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
1365{
1366 RT_NOREF(pDevIns, pTimer);
1367 PVNETSTATE pThis = (PVNETSTATE)pvUser;
1368
1369 uint32_t u32MicroDiff = (uint32_t)((RTTimeNanoTS() - pThis->u64NanoTS)/1000);
1370 if (u32MicroDiff < pThis->u32MinDiff)
1371 pThis->u32MinDiff = u32MicroDiff;
1372 if (u32MicroDiff > pThis->u32MaxDiff)
1373 pThis->u32MaxDiff = u32MicroDiff;
1374 pThis->u32AvgDiff = (pThis->u32AvgDiff * pThis->u32i + u32MicroDiff) / (pThis->u32i + 1);
1375 pThis->u32i++;
1376 Log3(("vnetTxTimer: Expired, diff %9d usec, avg %9d usec, min %9d usec, max %9d usec\n",
1377 u32MicroDiff, pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
1378
1379// Log3(("%s vnetTxTimer: Expired\n", INSTANCE(pThis)));
1380 vnetTransmitPendingPackets(pThis, pThis->pTxQueue, false /*fOnWorkerThread*/);
1381 if (RT_FAILURE(vnetCsEnter(pThis, VERR_SEM_BUSY)))
1382 {
1383 LogRel(("vnetTxTimer: Failed to enter critical section!/n"));
1384 return;
1385 }
1386 vringSetNotification(&pThis->VPCI, &pThis->pTxQueue->VRing, true);
1387 vnetCsLeave(pThis);
1388}
1389
1390#else /* !VNET_TX_DELAY */
1391
1392static DECLCALLBACK(void) vnetQueueTransmit(void *pvState, PVQUEUE pQueue)
1393{
1394 PVNETSTATE pThis = (PVNETSTATE)pvState;
1395
1396 vnetTransmitPendingPackets(pThis, pQueue, false /*fOnWorkerThread*/);
1397}
1398
1399#endif /* !VNET_TX_DELAY */
1400
1401static uint8_t vnetControlRx(PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1402{
1403 uint8_t u8Ack = VNET_OK;
1404 uint8_t fOn, fDrvWasPromisc = pThis->fPromiscuous | pThis->fAllMulti;
1405 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1406 pElem->aSegsOut[1].addr,
1407 &fOn, sizeof(fOn));
1408 Log(("%s vnetControlRx: uCommand=%u fOn=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, fOn));
1409 switch (pCtlHdr->u8Command)
1410 {
1411 case VNET_CTRL_CMD_RX_MODE_PROMISC:
1412 pThis->fPromiscuous = !!fOn;
1413 break;
1414 case VNET_CTRL_CMD_RX_MODE_ALLMULTI:
1415 pThis->fAllMulti = !!fOn;
1416 break;
1417 default:
1418 u8Ack = VNET_ERROR;
1419 }
1420 if (fDrvWasPromisc != (pThis->fPromiscuous | pThis->fAllMulti) && pThis->pDrv)
1421 pThis->pDrv->pfnSetPromiscuousMode(pThis->pDrv,
1422 (pThis->fPromiscuous | pThis->fAllMulti));
1423
1424 return u8Ack;
1425}
1426
1427static uint8_t vnetControlMac(PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1428{
1429 uint32_t nMacs = 0;
1430
1431 if (pCtlHdr->u8Command != VNET_CTRL_CMD_MAC_TABLE_SET
1432 || pElem->nOut != 3
1433 || pElem->aSegsOut[1].cb < sizeof(nMacs)
1434 || pElem->aSegsOut[2].cb < sizeof(nMacs))
1435 {
1436 Log(("%s vnetControlMac: Segment layout is wrong (u8Command=%u nOut=%u cb1=%u cb2=%u)\n",
1437 INSTANCE(pThis), pCtlHdr->u8Command, pElem->nOut, pElem->aSegsOut[1].cb, pElem->aSegsOut[2].cb));
1438 return VNET_ERROR;
1439 }
1440
1441 /* Load unicast addresses */
1442 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1443 pElem->aSegsOut[1].addr,
1444 &nMacs, sizeof(nMacs));
1445
1446 if (pElem->aSegsOut[1].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1447 {
1448 Log(("%s vnetControlMac: The unicast mac segment is too small (nMacs=%u cb=%u)\n",
1449 INSTANCE(pThis), nMacs, pElem->aSegsOut[1].cb));
1450 return VNET_ERROR;
1451 }
1452
1453 if (nMacs > VNET_MAC_FILTER_LEN)
1454 {
1455 Log(("%s vnetControlMac: MAC table is too big, have to use promiscuous mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1456 pThis->fPromiscuous = true;
1457 }
1458 else
1459 {
1460 if (nMacs)
1461 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1462 pElem->aSegsOut[1].addr + sizeof(nMacs),
1463 pThis->aMacFilter, nMacs * sizeof(RTMAC));
1464 pThis->nMacFilterEntries = nMacs;
1465#ifdef DEBUG
1466 Log(("%s vnetControlMac: unicast macs:\n", INSTANCE(pThis)));
1467 for(unsigned i = 0; i < nMacs; i++)
1468 Log((" %RTmac\n", &pThis->aMacFilter[i]));
1469#endif /* DEBUG */
1470 }
1471
1472 /* Load multicast addresses */
1473 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1474 pElem->aSegsOut[2].addr,
1475 &nMacs, sizeof(nMacs));
1476
1477 if (pElem->aSegsOut[2].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1478 {
1479 Log(("%s vnetControlMac: The multicast mac segment is too small (nMacs=%u cb=%u)\n",
1480 INSTANCE(pThis), nMacs, pElem->aSegsOut[2].cb));
1481 return VNET_ERROR;
1482 }
1483
1484 if (nMacs > VNET_MAC_FILTER_LEN - pThis->nMacFilterEntries)
1485 {
1486 Log(("%s vnetControlMac: MAC table is too big, have to use allmulti mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1487 pThis->fAllMulti = true;
1488 }
1489 else
1490 {
1491 if (nMacs)
1492 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1493 pElem->aSegsOut[2].addr + sizeof(nMacs),
1494 &pThis->aMacFilter[pThis->nMacFilterEntries],
1495 nMacs * sizeof(RTMAC));
1496#ifdef DEBUG
1497 Log(("%s vnetControlMac: multicast macs:\n", INSTANCE(pThis)));
1498 for(unsigned i = 0; i < nMacs; i++)
1499 Log((" %RTmac\n",
1500 &pThis->aMacFilter[i+pThis->nMacFilterEntries]));
1501#endif /* DEBUG */
1502 pThis->nMacFilterEntries += nMacs;
1503 }
1504
1505 return VNET_OK;
1506}
1507
1508static uint8_t vnetControlVlan(PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1509{
1510 uint8_t u8Ack = VNET_OK;
1511 uint16_t u16Vid;
1512
1513 if (pElem->nOut != 2 || pElem->aSegsOut[1].cb != sizeof(u16Vid))
1514 {
1515 Log(("%s vnetControlVlan: Segment layout is wrong (u8Command=%u nOut=%u cb=%u)\n",
1516 INSTANCE(pThis), pCtlHdr->u8Command, pElem->nOut, pElem->aSegsOut[1].cb));
1517 return VNET_ERROR;
1518 }
1519
1520 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1521 pElem->aSegsOut[1].addr,
1522 &u16Vid, sizeof(u16Vid));
1523
1524 if (u16Vid >= VNET_MAX_VID)
1525 {
1526 Log(("%s vnetControlVlan: VLAN ID is out of range (VID=%u)\n", INSTANCE(pThis), u16Vid));
1527 return VNET_ERROR;
1528 }
1529
1530 Log(("%s vnetControlVlan: uCommand=%u VID=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, u16Vid));
1531
1532 switch (pCtlHdr->u8Command)
1533 {
1534 case VNET_CTRL_CMD_VLAN_ADD:
1535 ASMBitSet(pThis->aVlanFilter, u16Vid);
1536 break;
1537 case VNET_CTRL_CMD_VLAN_DEL:
1538 ASMBitClear(pThis->aVlanFilter, u16Vid);
1539 break;
1540 default:
1541 u8Ack = VNET_ERROR;
1542 }
1543
1544 return u8Ack;
1545}
1546
1547
1548static DECLCALLBACK(void) vnetQueueControl(void *pvState, PVQUEUE pQueue)
1549{
1550 PVNETSTATE pThis = (PVNETSTATE)pvState;
1551 uint8_t u8Ack;
1552 VQUEUEELEM elem;
1553 while (vqueueGet(&pThis->VPCI, pQueue, &elem))
1554 {
1555 if (elem.nOut < 1 || elem.aSegsOut[0].cb < sizeof(VNETCTLHDR))
1556 {
1557 Log(("%s vnetQueueControl: The first 'out' segment is not the header! (%u < 1 || %u < %u).\n",
1558 INSTANCE(pThis), elem.nOut, elem.aSegsOut[0].cb,sizeof(VNETCTLHDR)));
1559 break; /* Skip the element and hope the next one is good. */
1560 }
1561 else if ( elem.nIn < 1
1562 || elem.aSegsIn[elem.nIn - 1].cb < sizeof(VNETCTLACK))
1563 {
1564 Log(("%s vnetQueueControl: The last 'in' segment is too small to hold the acknowledge! (%u < 1 || %u < %u).\n",
1565 INSTANCE(pThis), elem.nIn, elem.aSegsIn[elem.nIn - 1].cb, sizeof(VNETCTLACK)));
1566 break; /* Skip the element and hope the next one is good. */
1567 }
1568 else
1569 {
1570 VNETCTLHDR CtlHdr;
1571 PDMDevHlpPhysRead(pThis->VPCI.CTX_SUFF(pDevIns),
1572 elem.aSegsOut[0].addr,
1573 &CtlHdr, sizeof(CtlHdr));
1574 switch (CtlHdr.u8Class)
1575 {
1576 case VNET_CTRL_CLS_RX_MODE:
1577 u8Ack = vnetControlRx(pThis, &CtlHdr, &elem);
1578 break;
1579 case VNET_CTRL_CLS_MAC:
1580 u8Ack = vnetControlMac(pThis, &CtlHdr, &elem);
1581 break;
1582 case VNET_CTRL_CLS_VLAN:
1583 u8Ack = vnetControlVlan(pThis, &CtlHdr, &elem);
1584 break;
1585 default:
1586 u8Ack = VNET_ERROR;
1587 }
1588 Log(("%s Processed control message %u, ack=%u.\n", INSTANCE(pThis), CtlHdr.u8Class, u8Ack));
1589 PDMDevHlpPCIPhysWrite(pThis->VPCI.CTX_SUFF(pDevIns),
1590 elem.aSegsIn[elem.nIn - 1].addr,
1591 &u8Ack, sizeof(u8Ack));
1592 }
1593 vqueuePut(&pThis->VPCI, pQueue, &elem, sizeof(u8Ack));
1594 vqueueSync(&pThis->VPCI, pQueue);
1595 }
1596}
1597
1598
1599/* -=-=-=-=- Saved state -=-=-=-=- */
1600
1601/**
1602 * Saves the configuration.
1603 *
1604 * @param pThis The VNET state.
1605 * @param pSSM The handle to the saved state.
1606 */
1607static void vnetSaveConfig(PVNETSTATE pThis, PSSMHANDLE pSSM)
1608{
1609 SSMR3PutMem(pSSM, &pThis->macConfigured, sizeof(pThis->macConfigured));
1610}
1611
1612
1613/**
1614 * @callback_method_impl{FNSSMDEVLIVEEXEC}
1615 */
1616static DECLCALLBACK(int) vnetLiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
1617{
1618 RT_NOREF(uPass);
1619 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1620 vnetSaveConfig(pThis, pSSM);
1621 return VINF_SSM_DONT_CALL_AGAIN;
1622}
1623
1624
1625/**
1626 * @callback_method_impl{FNSSMDEVSAVEPREP}
1627 */
1628static DECLCALLBACK(int) vnetSavePrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1629{
1630 RT_NOREF(pSSM);
1631 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1632
1633 int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1634 if (RT_UNLIKELY(rc != VINF_SUCCESS))
1635 return rc;
1636 vnetCsRxLeave(pThis);
1637 return VINF_SUCCESS;
1638}
1639
1640
1641/**
1642 * @callback_method_impl{FNSSMDEVSAVEEXEC}
1643 */
1644static DECLCALLBACK(int) vnetSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1645{
1646 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1647
1648 /* Save config first */
1649 vnetSaveConfig(pThis, pSSM);
1650
1651 /* Save the common part */
1652 int rc = vpciSaveExec(&pThis->VPCI, pSSM);
1653 AssertRCReturn(rc, rc);
1654 /* Save device-specific part */
1655 rc = SSMR3PutMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac));
1656 AssertRCReturn(rc, rc);
1657 rc = SSMR3PutBool(pSSM, pThis->fPromiscuous);
1658 AssertRCReturn(rc, rc);
1659 rc = SSMR3PutBool(pSSM, pThis->fAllMulti);
1660 AssertRCReturn(rc, rc);
1661 rc = SSMR3PutU32( pSSM, pThis->nMacFilterEntries);
1662 AssertRCReturn(rc, rc);
1663 rc = SSMR3PutMem( pSSM, pThis->aMacFilter,
1664 pThis->nMacFilterEntries * sizeof(RTMAC));
1665 AssertRCReturn(rc, rc);
1666 rc = SSMR3PutMem( pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter));
1667 AssertRCReturn(rc, rc);
1668 Log(("%s State has been saved\n", INSTANCE(pThis)));
1669 return VINF_SUCCESS;
1670}
1671
1672
1673/**
1674 * @callback_method_impl{FNSSMDEVLOADPREP, Serializes the receive thread, it may
1675 * be working inside the critsect. }
1676 */
1677static DECLCALLBACK(int) vnetLoadPrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1678{
1679 RT_NOREF(pSSM);
1680 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1681
1682 int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1683 if (RT_UNLIKELY(rc != VINF_SUCCESS))
1684 return rc;
1685 vnetCsRxLeave(pThis);
1686 return VINF_SUCCESS;
1687}
1688
1689
1690/**
1691 * @callback_method_impl{FNSSMDEVLOADEXEC}
1692 */
1693static DECLCALLBACK(int) vnetLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1694{
1695 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1696 int rc;
1697
1698 /* config checks */
1699 RTMAC macConfigured;
1700 rc = SSMR3GetMem(pSSM, &macConfigured, sizeof(macConfigured));
1701 AssertRCReturn(rc, rc);
1702 if (memcmp(&macConfigured, &pThis->macConfigured, sizeof(macConfigured))
1703 && (uPass == 0 || !PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns)))
1704 LogRel(("%s: The mac address differs: config=%RTmac saved=%RTmac\n", INSTANCE(pThis), &pThis->macConfigured, &macConfigured));
1705
1706 rc = vpciLoadExec(&pThis->VPCI, pSSM, uVersion, uPass, VNET_N_QUEUES);
1707 AssertRCReturn(rc, rc);
1708
1709 if (uPass == SSM_PASS_FINAL)
1710 {
1711 rc = SSMR3GetMem( pSSM, pThis->config.mac.au8,
1712 sizeof(pThis->config.mac));
1713 AssertRCReturn(rc, rc);
1714
1715 if (uVersion > VIRTIO_SAVEDSTATE_VERSION_3_1_BETA1)
1716 {
1717 rc = SSMR3GetBool(pSSM, &pThis->fPromiscuous);
1718 AssertRCReturn(rc, rc);
1719 rc = SSMR3GetBool(pSSM, &pThis->fAllMulti);
1720 AssertRCReturn(rc, rc);
1721 rc = SSMR3GetU32(pSSM, &pThis->nMacFilterEntries);
1722 AssertRCReturn(rc, rc);
1723 rc = SSMR3GetMem(pSSM, pThis->aMacFilter,
1724 pThis->nMacFilterEntries * sizeof(RTMAC));
1725 AssertRCReturn(rc, rc);
1726 /* Clear the rest. */
1727 if (pThis->nMacFilterEntries < VNET_MAC_FILTER_LEN)
1728 memset(&pThis->aMacFilter[pThis->nMacFilterEntries],
1729 0,
1730 (VNET_MAC_FILTER_LEN - pThis->nMacFilterEntries)
1731 * sizeof(RTMAC));
1732 rc = SSMR3GetMem(pSSM, pThis->aVlanFilter,
1733 sizeof(pThis->aVlanFilter));
1734 AssertRCReturn(rc, rc);
1735 }
1736 else
1737 {
1738 pThis->fPromiscuous = true;
1739 pThis->fAllMulti = false;
1740 pThis->nMacFilterEntries = 0;
1741 memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC));
1742 memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter));
1743 if (pThis->pDrv)
1744 pThis->pDrv->pfnSetPromiscuousMode(pThis->pDrv, true);
1745 }
1746 }
1747
1748 return rc;
1749}
1750
1751
1752/**
1753 * @callback_method_impl{FNSSMDEVLOADDONE, Link status adjustments after
1754 * loading.}
1755 */
1756static DECLCALLBACK(int) vnetLoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1757{
1758 RT_NOREF(pSSM);
1759 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1760
1761 if (pThis->pDrv)
1762 pThis->pDrv->pfnSetPromiscuousMode(pThis->pDrv,
1763 (pThis->fPromiscuous | pThis->fAllMulti));
1764 /*
1765 * Indicate link down to the guest OS that all network connections have
1766 * been lost, unless we've been teleported here.
1767 */
1768 if (!PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns))
1769 vnetTempLinkDown(pThis);
1770
1771 return VINF_SUCCESS;
1772}
1773
1774
1775/* -=-=-=-=- PCI Device -=-=-=-=- */
1776
1777/**
1778 * @callback_method_impl{FNPCIIOREGIONMAP}
1779 */
1780static DECLCALLBACK(int) vnetMap(PPDMDEVINS pDevIns, PPDMPCIDEV pPciDev, uint32_t iRegion,
1781 RTGCPHYS GCPhysAddress, RTGCPHYS cb, PCIADDRESSSPACE enmType)
1782{
1783 RT_NOREF(pPciDev, iRegion);
1784 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1785 int rc;
1786
1787 if (enmType != PCI_ADDRESS_SPACE_IO)
1788 {
1789 /* We should never get here */
1790 AssertMsgFailed(("Invalid PCI address space param in map callback"));
1791 return VERR_INTERNAL_ERROR;
1792 }
1793
1794 pThis->VPCI.IOPortBase = (RTIOPORT)GCPhysAddress;
1795 rc = PDMDevHlpIOPortRegister(pDevIns, pThis->VPCI.IOPortBase,
1796 cb, 0, vnetIOPortOut, vnetIOPortIn,
1797 NULL, NULL, "VirtioNet");
1798#ifdef VNET_GC_SUPPORT
1799 AssertRCReturn(rc, rc);
1800 rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->VPCI.IOPortBase,
1801 cb, 0, "vnetIOPortOut", "vnetIOPortIn",
1802 NULL, NULL, "VirtioNet");
1803 AssertRCReturn(rc, rc);
1804 rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->VPCI.IOPortBase,
1805 cb, 0, "vnetIOPortOut", "vnetIOPortIn",
1806 NULL, NULL, "VirtioNet");
1807#endif
1808 AssertRC(rc);
1809 return rc;
1810}
1811
1812
1813/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
1814
1815/**
1816 * @interface_method_impl{PDMDEVREG,pfnDetach}
1817 */
1818static DECLCALLBACK(void) vnetDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
1819{
1820 RT_NOREF(fFlags);
1821 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1822 Log(("%s vnetDetach:\n", INSTANCE(pThis)));
1823
1824 AssertLogRelReturnVoid(iLUN == 0);
1825
1826 int rc = vnetCsEnter(pThis, VERR_SEM_BUSY);
1827 if (RT_FAILURE(rc))
1828 {
1829 LogRel(("vnetDetach failed to enter critical section!\n"));
1830 return;
1831 }
1832
1833 /*
1834 * Zero some important members.
1835 */
1836 pThis->pDrvBase = NULL;
1837 pThis->pDrv = NULL;
1838
1839 vnetCsLeave(pThis);
1840}
1841
1842
1843/**
1844 * @interface_method_impl{PDMDEVREG,pfnAttach}
1845 */
1846static DECLCALLBACK(int) vnetAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
1847{
1848 RT_NOREF(fFlags);
1849 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1850 LogFlow(("%s vnetAttach:\n", INSTANCE(pThis)));
1851
1852 AssertLogRelReturn(iLUN == 0, VERR_PDM_NO_SUCH_LUN);
1853
1854 int rc = vnetCsEnter(pThis, VERR_SEM_BUSY);
1855 if (RT_FAILURE(rc))
1856 {
1857 LogRel(("vnetAttach failed to enter critical section!\n"));
1858 return rc;
1859 }
1860
1861 /*
1862 * Attach the driver.
1863 */
1864 rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->VPCI.IBase, &pThis->pDrvBase, "Network Port");
1865 if (RT_SUCCESS(rc))
1866 {
1867 if (rc == VINF_NAT_DNS)
1868 {
1869#ifdef RT_OS_LINUX
1870 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
1871 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"));
1872#else
1873 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
1874 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"));
1875#endif
1876 }
1877 pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
1878 AssertMsgStmt(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
1879 rc = VERR_PDM_MISSING_INTERFACE_BELOW);
1880 }
1881 else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
1882 || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME)
1883 {
1884 /* This should never happen because this function is not called
1885 * if there is no driver to attach! */
1886 Log(("%s No attached driver!\n", INSTANCE(pThis)));
1887 }
1888
1889 /*
1890 * Temporary set the link down if it was up so that the guest
1891 * will know that we have change the configuration of the
1892 * network card
1893 */
1894 if (RT_SUCCESS(rc))
1895 vnetTempLinkDown(pThis);
1896
1897 vnetCsLeave(pThis);
1898 return rc;
1899
1900}
1901
1902
1903/**
1904 * @interface_method_impl{PDMDEVREG,pfnSuspend}
1905 */
1906static DECLCALLBACK(void) vnetSuspend(PPDMDEVINS pDevIns)
1907{
1908 /* Poke thread waiting for buffer space. */
1909 vnetWakeupReceive(pDevIns);
1910}
1911
1912
1913/**
1914 * @interface_method_impl{PDMDEVREG,pfnPowerOff}
1915 */
1916static DECLCALLBACK(void) vnetPowerOff(PPDMDEVINS pDevIns)
1917{
1918 /* Poke thread waiting for buffer space. */
1919 vnetWakeupReceive(pDevIns);
1920}
1921
1922
1923/**
1924 * @interface_method_impl{PDMDEVREG,pfnRelocate}
1925 */
1926static DECLCALLBACK(void) vnetRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
1927{
1928 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1929 vpciRelocate(pDevIns, offDelta);
1930 pThis->pCanRxQueueRC = PDMQueueRCPtr(pThis->pCanRxQueueR3);
1931#ifdef VNET_TX_DELAY
1932 pThis->pTxTimerRC = TMTimerRCPtr(pThis->pTxTimerR3);
1933#endif /* VNET_TX_DELAY */
1934 // TBD
1935}
1936
1937
1938/**
1939 * @interface_method_impl{PDMDEVREG,pfnDestruct}
1940 */
1941static DECLCALLBACK(int) vnetDestruct(PPDMDEVINS pDevIns)
1942{
1943 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1944 PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
1945
1946 LogRel(("TxTimer stats (avg/min/max): %7d usec %7d usec %7d usec\n",
1947 pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
1948 Log(("%s Destroying instance\n", INSTANCE(pThis)));
1949 if (pThis->hEventMoreRxDescAvail != NIL_RTSEMEVENT)
1950 {
1951 RTSemEventSignal(pThis->hEventMoreRxDescAvail);
1952 RTSemEventDestroy(pThis->hEventMoreRxDescAvail);
1953 pThis->hEventMoreRxDescAvail = NIL_RTSEMEVENT;
1954 }
1955
1956 // if (PDMCritSectIsInitialized(&pThis->csRx))
1957 // PDMR3CritSectDelete(&pThis->csRx);
1958
1959 return vpciDestruct(&pThis->VPCI);
1960}
1961
1962
1963/**
1964 * @interface_method_impl{PDMDEVREG,pfnConstruct}
1965 */
1966static DECLCALLBACK(int) vnetConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1967{
1968 PVNETSTATE pThis = PDMINS_2_DATA(pDevIns, PVNETSTATE);
1969 int rc;
1970 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1971
1972 /* Initialize the instance data suffiencently for the destructor not to blow up. */
1973 pThis->hEventMoreRxDescAvail = NIL_RTSEMEVENT;
1974
1975 /* Do our own locking. */
1976 rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
1977 AssertRCReturn(rc, rc);
1978
1979 /* Initialize PCI part. */
1980 pThis->VPCI.IBase.pfnQueryInterface = vnetQueryInterface;
1981 rc = vpciConstruct(pDevIns, &pThis->VPCI, iInstance,
1982 VNET_NAME_FMT, VIRTIO_NET_ID,
1983 VNET_PCI_CLASS, VNET_N_QUEUES);
1984 pThis->pRxQueue = vpciAddQueue(&pThis->VPCI, 256, vnetQueueReceive, "RX ");
1985 pThis->pTxQueue = vpciAddQueue(&pThis->VPCI, 256, vnetQueueTransmit, "TX ");
1986 pThis->pCtlQueue = vpciAddQueue(&pThis->VPCI, 16, vnetQueueControl, "CTL");
1987
1988 Log(("%s Constructing new instance\n", INSTANCE(pThis)));
1989
1990 /*
1991 * Validate configuration.
1992 */
1993 if (!CFGMR3AreValuesValid(pCfg, "MAC\0" "CableConnected\0" "LineSpeed\0" "LinkUpDelay\0"))
1994 return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
1995 N_("Invalid configuration for VirtioNet device"));
1996
1997 /* Get config params */
1998 rc = CFGMR3QueryBytes(pCfg, "MAC", pThis->macConfigured.au8,
1999 sizeof(pThis->macConfigured));
2000 if (RT_FAILURE(rc))
2001 return PDMDEV_SET_ERROR(pDevIns, rc,
2002 N_("Configuration error: Failed to get MAC address"));
2003 rc = CFGMR3QueryBool(pCfg, "CableConnected", &pThis->fCableConnected);
2004 if (RT_FAILURE(rc))
2005 return PDMDEV_SET_ERROR(pDevIns, rc,
2006 N_("Configuration error: Failed to get the value of 'CableConnected'"));
2007 rc = CFGMR3QueryU32Def(pCfg, "LinkUpDelay", (uint32_t*)&pThis->cMsLinkUpDelay, 5000); /* ms */
2008 if (RT_FAILURE(rc))
2009 return PDMDEV_SET_ERROR(pDevIns, rc,
2010 N_("Configuration error: Failed to get the value of 'LinkUpDelay'"));
2011 Assert(pThis->cMsLinkUpDelay <= 300000); /* less than 5 minutes */
2012 if (pThis->cMsLinkUpDelay > 5000 || pThis->cMsLinkUpDelay < 100)
2013 {
2014 LogRel(("%s WARNING! Link up delay is set to %u seconds!\n",
2015 INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2016 }
2017 Log(("%s Link up delay is set to %u seconds\n",
2018 INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2019
2020
2021 vnetPrintFeatures(pThis, vnetIoCb_GetHostFeatures(pThis), "Device supports the following features");
2022
2023 /* Initialize PCI config space */
2024 memcpy(pThis->config.mac.au8, pThis->macConfigured.au8, sizeof(pThis->config.mac.au8));
2025 pThis->config.uStatus = 0;
2026
2027 /* Initialize state structure */
2028 pThis->u32PktNo = 1;
2029
2030 /* Interfaces */
2031 pThis->INetworkDown.pfnWaitReceiveAvail = vnetNetworkDown_WaitReceiveAvail;
2032 pThis->INetworkDown.pfnReceive = vnetNetworkDown_Receive;
2033 pThis->INetworkDown.pfnReceiveGso = vnetNetworkDown_ReceiveGso;
2034 pThis->INetworkDown.pfnXmitPending = vnetNetworkDown_XmitPending;
2035
2036 pThis->INetworkConfig.pfnGetMac = vnetGetMac;
2037 pThis->INetworkConfig.pfnGetLinkState = vnetGetLinkState;
2038 pThis->INetworkConfig.pfnSetLinkState = vnetSetLinkState;
2039
2040 /* Initialize critical section. */
2041 // char szTmp[sizeof(pThis->VPCI.szInstance) + 2];
2042 // RTStrPrintf(szTmp, sizeof(szTmp), "%sRX", pThis->VPCI.szInstance);
2043 // rc = PDMDevHlpCritSectInit(pDevIns, &pThis->csRx, szTmp);
2044 // if (RT_FAILURE(rc))
2045 // return rc;
2046
2047 /* Map our ports to IO space. */
2048 rc = PDMDevHlpPCIIORegionRegister(pDevIns, 0,
2049 VPCI_CONFIG + sizeof(VNetPCIConfig),
2050 PCI_ADDRESS_SPACE_IO, vnetMap);
2051 if (RT_FAILURE(rc))
2052 return rc;
2053
2054
2055 /* Register save/restore state handlers. */
2056 rc = PDMDevHlpSSMRegisterEx(pDevIns, VIRTIO_SAVEDSTATE_VERSION, sizeof(VNETSTATE), NULL,
2057 NULL, vnetLiveExec, NULL,
2058 vnetSavePrep, vnetSaveExec, NULL,
2059 vnetLoadPrep, vnetLoadExec, vnetLoadDone);
2060 if (RT_FAILURE(rc))
2061 return rc;
2062
2063 /* Create the RX notifier signaller. */
2064 rc = PDMDevHlpQueueCreate(pDevIns, sizeof(PDMQUEUEITEMCORE), 1, 0,
2065 vnetCanRxQueueConsumer, true, "VNet-Rcv", &pThis->pCanRxQueueR3);
2066 if (RT_FAILURE(rc))
2067 return rc;
2068 pThis->pCanRxQueueR0 = PDMQueueR0Ptr(pThis->pCanRxQueueR3);
2069 pThis->pCanRxQueueRC = PDMQueueRCPtr(pThis->pCanRxQueueR3);
2070
2071 /* Create Link Up Timer */
2072 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetLinkUpTimer, pThis,
2073 TMTIMER_FLAGS_NO_CRIT_SECT,
2074 "VirtioNet Link Up Timer", &pThis->pLinkUpTimer);
2075 if (RT_FAILURE(rc))
2076 return rc;
2077
2078#ifdef VNET_TX_DELAY
2079 /* Create Transmit Delay Timer */
2080 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetTxTimer, pThis,
2081 TMTIMER_FLAGS_NO_CRIT_SECT,
2082 "VirtioNet TX Delay Timer", &pThis->pTxTimerR3);
2083 if (RT_FAILURE(rc))
2084 return rc;
2085 pThis->pTxTimerR0 = TMTimerR0Ptr(pThis->pTxTimerR3);
2086 pThis->pTxTimerRC = TMTimerRCPtr(pThis->pTxTimerR3);
2087
2088 pThis->u32i = pThis->u32AvgDiff = pThis->u32MaxDiff = 0;
2089 pThis->u32MinDiff = UINT32_MAX;
2090#endif /* VNET_TX_DELAY */
2091
2092 rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->VPCI.IBase, &pThis->pDrvBase, "Network Port");
2093 if (RT_SUCCESS(rc))
2094 {
2095 if (rc == VINF_NAT_DNS)
2096 {
2097 PDMDevHlpVMSetRuntimeError(pDevIns, 0 /*fFlags*/, "NoDNSforNAT",
2098 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"));
2099 }
2100 pThis->pDrv = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMINETWORKUP);
2101 AssertMsgReturn(pThis->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
2102 VERR_PDM_MISSING_INTERFACE_BELOW);
2103 }
2104 else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
2105 || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME )
2106 {
2107 /* No error! */
2108 Log(("%s This adapter is not attached to any network!\n", INSTANCE(pThis)));
2109 }
2110 else
2111 return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to attach the network LUN"));
2112
2113 rc = RTSemEventCreate(&pThis->hEventMoreRxDescAvail);
2114 if (RT_FAILURE(rc))
2115 return rc;
2116
2117 rc = vnetIoCb_Reset(pThis);
2118 AssertRC(rc);
2119
2120 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data received", "/Public/Net/VNet%u/BytesReceived", iInstance);
2121 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data transmitted", "/Public/Net/VNet%u/BytesTransmitted", iInstance);
2122
2123 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data received", "/Devices/VNet%d/ReceiveBytes", iInstance);
2124 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data transmitted", "/Devices/VNet%d/TransmitBytes", iInstance);
2125 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveGSO, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of received GSO packets", "/Devices/VNet%d/Packets/ReceiveGSO", iInstance);
2126 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitPackets, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of sent packets", "/Devices/VNet%d/Packets/Transmit", iInstance);
2127 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitGSO, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of sent GSO packets", "/Devices/VNet%d/Packets/Transmit-Gso", iInstance);
2128 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitCSum, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of completed TX checksums", "/Devices/VNet%d/Packets/Transmit-Csum", iInstance);
2129#if defined(VBOX_WITH_STATISTICS)
2130 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceive, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling receive", "/Devices/VNet%d/Receive/Total", iInstance);
2131 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveStore, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling receive storing", "/Devices/VNet%d/Receive/Store", iInstance);
2132 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRxOverflow, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_OCCURENCE, "Profiling RX overflows", "/Devices/VNet%d/RxOverflow", iInstance);
2133 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatRxOverflowWakeup, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Nr of RX overflow wakeups", "/Devices/VNet%d/RxOverflowWakeup", iInstance);
2134 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmit, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling transmits in HC", "/Devices/VNet%d/Transmit/Total", iInstance);
2135 PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitSend, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling send transmit in HC", "/Devices/VNet%d/Transmit/Send", iInstance);
2136#endif /* VBOX_WITH_STATISTICS */
2137
2138 return VINF_SUCCESS;
2139}
2140
2141/**
2142 * The device registration structure.
2143 */
2144const PDMDEVREG g_DeviceVirtioNet =
2145{
2146 /* Structure version. PDM_DEVREG_VERSION defines the current version. */
2147 PDM_DEVREG_VERSION,
2148 /* Device name. */
2149 "virtio-net",
2150 /* Name of guest context module (no path).
2151 * Only evalutated if PDM_DEVREG_FLAGS_RC is set. */
2152 "VBoxDDRC.rc",
2153 /* Name of ring-0 module (no path).
2154 * Only evalutated if PDM_DEVREG_FLAGS_RC is set. */
2155 "VBoxDDR0.r0",
2156 /* The description of the device. The UTF-8 string pointed to shall, like this structure,
2157 * remain unchanged from registration till VM destruction. */
2158 "Virtio Ethernet.\n",
2159
2160 /* Flags, combination of the PDM_DEVREG_FLAGS_* \#defines. */
2161#ifdef VNET_GC_SUPPORT
2162 PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RC | PDM_DEVREG_FLAGS_R0,
2163#else
2164 PDM_DEVREG_FLAGS_DEFAULT_BITS,
2165#endif
2166 /* Device class(es), combination of the PDM_DEVREG_CLASS_* \#defines. */
2167 PDM_DEVREG_CLASS_NETWORK,
2168 /* Maximum number of instances (per VM). */
2169 ~0U,
2170 /* Size of the instance data. */
2171 sizeof(VNETSTATE),
2172
2173 /* pfnConstruct */
2174 vnetConstruct,
2175 /* pfnDestruct */
2176 vnetDestruct,
2177 /* pfnRelocate */
2178 vnetRelocate,
2179 /* pfnMemSetup. */
2180 NULL,
2181 /* pfnPowerOn */
2182 NULL,
2183 /* pfnReset */
2184 NULL,
2185 /* pfnSuspend */
2186 vnetSuspend,
2187 /* pfnResume */
2188 NULL,
2189 /* pfnAttach */
2190 vnetAttach,
2191 /* pfnDetach */
2192 vnetDetach,
2193 /* pfnQueryInterface */
2194 NULL,
2195 /* pfnInitComplete */
2196 NULL,
2197 /* pfnPowerOff */
2198 vnetPowerOff,
2199 /* pfnSoftReset */
2200 NULL,
2201
2202 /* u32VersionEnd */
2203 PDM_DEVREG_VERSION
2204};
2205
2206#endif /* IN_RING3 */
2207#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
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