DevVirtioNet.cpp@ 85179

Last change on this file since 85179 was 85109, checked in by vboxsync, 4 years ago
Resolved other part of xtracker #9766. Rearranged structs, arrays and pointers to improve cache locality (impacts: Network/DevVirtioNet.cpp, DevVirtioNet_1_0.cpp, and VirtIO/VirtioCore.*)
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 86.5 KB

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1	/* $Id: DevVirtioNet.cpp 85109 2020-07-08 14:03:45Z vboxsync $ */
2	/** @file
3	* DevVirtioNet - Virtio Network Device
4	*/
5
6	/*
7	* Copyright (C) 2009-2020 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_WITH_GSO
24	#define VNET_WITH_MERGEABLE_RX_BUFS
25
26	#include <VBox/vmm/pdmdev.h>
27	#include <VBox/vmm/pdmnetifs.h>
28	#include <iprt/asm.h>
29	#include <iprt/net.h>
30	#include <iprt/semaphore.h>
31	#include <iprt/string.h>
32	#ifdef IN_RING3
33	# include <iprt/uuid.h>
34	#endif
35	#include <VBox/VBoxPktDmp.h>
36	#include "VBoxDD.h"
37	#include "../VirtIO/Virtio.h"
38
39
40	/*********************************************************************************************************************************
41	* Defined Constants And Macros *
42	*********************************************************************************************************************************/
43	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
44
45	#define INSTANCE(pThis) pThis->VPCI.szInstance
46
47	#ifdef IN_RING3
48
49	# define VNET_PCI_CLASS 0x0200
50	# define VNET_N_QUEUES 3
51
52	# if 0
53	/* Virtio Block Device */
54	# define VNET_PCI_CLASS 0x0180
55	# define VNET_N_QUEUES 2
56	# endif
57
58	#endif /* IN_RING3 */
59
60	#endif /* VBOX_DEVICE_STRUCT_TESTCASE */
61
62	/*
63	* Commenting out VNET_TX_DELAY enables async transmission in a dedicated thread.
64	* When VNET_TX_DELAY is defined, a timer handler does the job.
65	*/
66	//#define VNET_TX_DELAY 150 /*< 150 microseconds /
67	#define VNET_MAX_FRAME_SIZE 65535 + 18 /*< Max IP packet size + Ethernet header with VLAN tag /
68	#define VNET_MAC_FILTER_LEN 32
69	#define VNET_MAX_VID (1 << 12)
70
71	/** @name Virtio net features
72	* @{ */
73	#define VNET_F_CSUM 0x00000001 /*< Host handles pkts w/ partial csum /
74	#define VNET_F_GUEST_CSUM 0x00000002 /*< Guest handles pkts w/ partial csum /
75	#define VNET_F_MAC 0x00000020 /*< Host has given MAC address. /
76	#define VNET_F_GSO 0x00000040 /*< Host handles pkts w/ any GSO type /
77	#define VNET_F_GUEST_TSO4 0x00000080 /*< Guest can handle TSOv4 in. /
78	#define VNET_F_GUEST_TSO6 0x00000100 /*< Guest can handle TSOv6 in. /
79	#define VNET_F_GUEST_ECN 0x00000200 /*< Guest can handle TSO[6] w/ ECN in. /
80	#define VNET_F_GUEST_UFO 0x00000400 /*< Guest can handle UFO in. /
81	#define VNET_F_HOST_TSO4 0x00000800 /*< Host can handle TSOv4 in. /
82	#define VNET_F_HOST_TSO6 0x00001000 /*< Host can handle TSOv6 in. /
83	#define VNET_F_HOST_ECN 0x00002000 /*< Host can handle TSO[6] w/ ECN in. /
84	#define VNET_F_HOST_UFO 0x00004000 /*< Host can handle UFO in. /
85	#define VNET_F_MRG_RXBUF 0x00008000 /*< Host can merge receive buffers. /
86	#define VNET_F_STATUS 0x00010000 /*< virtio_net_config.status available /
87	#define VNET_F_CTRL_VQ 0x00020000 /*< Control channel available /
88	#define VNET_F_CTRL_RX 0x00040000 /*< Control channel RX mode support /
89	#define VNET_F_CTRL_VLAN 0x00080000 /*< Control channel VLAN filtering /
90	/** @} */
91
92	#define VNET_S_LINK_UP 1
93
94
95	/*********************************************************************************************************************************
96	* Structures and Typedefs *
97	*********************************************************************************************************************************/
98	#ifdef _MSC_VER
99	struct VNetPCIConfig
100	#else /* !_MSC_VER */
101	struct __attribute__ ((__packed__)) VNetPCIConfig /** @todo r=bird: Use #pragma pack if necessary, that's portable! */
102	#endif /* !_MSC_VER */
103	{
104	RTMAC mac;
105	uint16_t uStatus;
106	};
107	AssertCompileMemberOffset(struct VNetPCIConfig, uStatus, 6);
108
109	/**
110	* The virtio-net shared instance data.
111	*
112	* @extends VPCISTATE
113	*/
114	typedef struct VNETSTATE
115	{
116	VPCISTATE VPCI;
117
118	// PDMCRITSECT csRx; /*< Protects RX queue. /
119
120	#ifdef VNET_TX_DELAY
121	/** Transmit Delay Timer. */
122	TMTIMERHANDLE hTxTimer;
123	uint32_t u32i;
124	uint32_t u32AvgDiff;
125	uint32_t u32MinDiff;
126	uint32_t u32MaxDiff;
127	uint64_t u64NanoTS;
128	#else /* !VNET_TX_DELAY */
129	/** The event semaphore TX thread waits on. */
130	SUPSEMEVENT hTxEvent;
131	#endif /* !VNET_TX_DELAY */
132
133	/** Indicates transmission in progress -- only one thread is allowed. */
134	uint32_t uIsTransmitting;
135
136	/** PCI config area holding MAC address as well as TBD. */
137	struct VNetPCIConfig config;
138	/** MAC address obtained from the configuration. */
139	RTMAC macConfigured;
140	/** True if physical cable is attached in configuration. */
141	bool fCableConnected;
142	/** Link up delay (in milliseconds). */
143	uint32_t cMsLinkUpDelay;
144
145	uint32_t alignment;
146
147	/** Number of packet being sent/received to show in debug log. */
148	uint32_t u32PktNo;
149
150	/** N/A: */
151	bool volatile fMaybeOutOfSpace;
152
153	/** Promiscuous mode -- RX filter accepts all packets. */
154	bool fPromiscuous;
155	/** AllMulti mode -- RX filter accepts all multicast packets. */
156	bool fAllMulti;
157	/** The number of actually used slots in aMacTable. */
158	uint32_t cMacFilterEntries;
159	/** Array of MAC addresses accepted by RX filter. */
160	RTMAC aMacFilter[VNET_MAC_FILTER_LEN];
161	/** Bit array of VLAN filter, one bit per VLAN ID. */
162	uint8_t aVlanFilter[VNET_MAX_VID / sizeof(uint8_t)];
163
164	/* Receive-blocking-related fields ***************************************/
165
166	/** EMT: Gets signalled when more RX descriptors become available. */
167	SUPSEMEVENT hEventMoreRxDescAvail;
168
169	/** Handle of the I/O port range. */
170	IOMIOPORTHANDLE hIoPorts;
171
172	/** @name Statistic
173	* @{ */
174	STAMCOUNTER StatReceiveBytes;
175	STAMCOUNTER StatTransmitBytes;
176	STAMCOUNTER StatReceiveGSO;
177	STAMCOUNTER StatTransmitPackets;
178	STAMCOUNTER StatTransmitGSO;
179	STAMCOUNTER StatTransmitCSum;
180	#ifdef VBOX_WITH_STATISTICS
181	STAMPROFILE StatReceive;
182	STAMPROFILE StatReceiveStore;
183	STAMPROFILEADV StatTransmit;
184	STAMPROFILE StatTransmitSend;
185	STAMPROFILE StatRxOverflow;
186	STAMCOUNTER StatRxOverflowWakeup;
187	STAMCOUNTER StatTransmitByNetwork;
188	STAMCOUNTER StatTransmitByThread;
189	#endif
190	/** @} */
191	} VNETSTATE;
192	/** Pointer to the virtio-net shared instance data. */
193	typedef VNETSTATE *PVNETSTATE;
194
195
196	/**
197	* The virtio-net ring-3 instance data.
198	*
199	* @extends VPCISTATER3
200	* @implements PDMINETWORKDOWN
201	* @implements PDMINETWORKCONFIG
202	*/
203	typedef struct VNETSTATER3
204	{
205	VPCISTATER3 VPCI;
206
207	PDMINETWORKDOWN INetworkDown;
208	PDMINETWORKCONFIG INetworkConfig;
209	R3PTRTYPE(PPDMIBASE) pDrvBase; /*< Attached network driver. /
210	R3PTRTYPE(PPDMINETWORKUP) pDrv; /*< Connector of attached network driver. /
211	/** The device instance.
212	* @note This is _only_ for use when dealing with interface callbacks. */
213	PPDMDEVINSR3 pDevIns;
214
215	#ifndef VNET_TX_DELAY
216	R3PTRTYPE(PPDMTHREAD) pTxThread;
217	#endif
218
219	R3PTRTYPE(PVQUEUE) pRxQueue;
220	R3PTRTYPE(PVQUEUE) pTxQueue;
221	R3PTRTYPE(PVQUEUE) pCtlQueue;
222
223	/** Link Up(/Restore) Timer. */
224	TMTIMERHANDLE hLinkUpTimer;
225	} VNETSTATER3;
226	/** Pointer to the virtio-net ring-3 instance data. */
227	typedef VNETSTATER3 *PVNETSTATER3;
228
229
230	/**
231	* The virtio-net ring-0 instance data.
232	*
233	* @extends VPCISTATER0
234	*/
235	typedef struct VNETSTATER0
236	{
237	VPCISTATER0 VPCI;
238	} VNETSTATER0;
239	/** Pointer to the virtio-net ring-0 instance data. */
240	typedef VNETSTATER0 *PVNETSTATER0;
241
242
243	/**
244	* The virtio-net raw-mode instance data.
245	*
246	* @extends VPCISTATERC
247	*/
248	typedef struct VNETSTATERC
249	{
250	VPCISTATERC VPCI;
251	} VNETSTATERC;
252	/** Pointer to the virtio-net ring-0 instance data. */
253	typedef VNETSTATERC *PVNETSTATERC;
254
255
256	/** The virtio-net currenct context instance data. */
257	typedef CTX_SUFF(VNETSTATE) VNETSTATECC;
258	/** Pointer to the virtio-net currenct context instance data. */
259	typedef CTX_SUFF(PVNETSTATE) PVNETSTATECC;
260
261
262
263	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
264
265	#define VNETHDR_F_NEEDS_CSUM 1 // Use u16CSumStart, u16CSumOffset
266
267	#define VNETHDR_GSO_NONE 0 // Not a GSO frame
268	#define VNETHDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO)
269	#define VNETHDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO)
270	#define VNETHDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP
271	#define VNETHDR_GSO_ECN 0x80 // TCP has ECN set
272
273	struct VNetHdr
274	{
275	uint8_t u8Flags;
276	uint8_t u8GSOType;
277	uint16_t u16HdrLen;
278	uint16_t u16GSOSize;
279	uint16_t u16CSumStart;
280	uint16_t u16CSumOffset;
281	};
282	typedef struct VNetHdr VNETHDR;
283	typedef VNETHDR *PVNETHDR;
284	AssertCompileSize(VNETHDR, 10);
285
286	struct VNetHdrMrx
287	{
288	VNETHDR Hdr;
289	uint16_t u16NumBufs;
290	};
291	typedef struct VNetHdrMrx VNETHDRMRX;
292	typedef VNETHDRMRX *PVNETHDRMRX;
293	AssertCompileSize(VNETHDRMRX, 12);
294
295	AssertCompileMemberOffset(VNETSTATE, VPCI, 0);
296
297	#define VNET_OK 0
298	#define VNET_ERROR 1
299	typedef uint8_t VNETCTLACK;
300
301	#define VNET_CTRL_CLS_RX_MODE 0
302	#define VNET_CTRL_CMD_RX_MODE_PROMISC 0
303	#define VNET_CTRL_CMD_RX_MODE_ALLMULTI 1
304
305	#define VNET_CTRL_CLS_MAC 1
306	#define VNET_CTRL_CMD_MAC_TABLE_SET 0
307
308	#define VNET_CTRL_CLS_VLAN 2
309	#define VNET_CTRL_CMD_VLAN_ADD 0
310	#define VNET_CTRL_CMD_VLAN_DEL 1
311
312
313	typedef struct VNetCtlHdr
314	{
315	uint8_t u8Class;
316	uint8_t u8Command;
317	} VNETCTLHDR;
318	AssertCompileSize(VNETCTLHDR, 2);
319	typedef VNETCTLHDR *PVNETCTLHDR;
320
321
322
323	#ifdef IN_RING3
324
325	/** Returns true if large packets are written into several RX buffers. */
326	DECLINLINE(bool) vnetR3MergeableRxBuffers(PVNETSTATE pThis)
327	{
328	return !!(pThis->VPCI.uGuestFeatures & VNET_F_MRG_RXBUF);
329	}
330
331	DECLINLINE(int) vnetR3CsEnter(PPDMDEVINS pDevIns, PVNETSTATE pThis, int rcBusy)
332	{
333	return vpciCsEnter(pDevIns, &pThis->VPCI, rcBusy);
334	}
335
336	DECLINLINE(void) vnetR3CsLeave(PPDMDEVINS pDevIns, PVNETSTATE pThis)
337	{
338	vpciCsLeave(pDevIns, &pThis->VPCI);
339	}
340
341	#endif /* IN_RING3 */
342
343	DECLINLINE(int) vnetCsRxEnter(PVNETSTATE pThis, int rcBusy)
344	{
345	RT_NOREF_PV(pThis);
346	RT_NOREF_PV(rcBusy);
347	// STAM_PROFILE_START(&pThis->CTXSUFF(StatCsRx), a);
348	// int rc = PDMCritSectEnter(&pThis->csRx, rcBusy);
349	// STAM_PROFILE_STOP(&pThis->CTXSUFF(StatCsRx), a);
350	// return rc;
351	return VINF_SUCCESS;
352	}
353
354	DECLINLINE(void) vnetCsRxLeave(PVNETSTATE pThis)
355	{
356	RT_NOREF_PV(pThis);
357	// PDMCritSectLeave(&pThis->csRx);
358	}
359
360	#ifdef IN_RING3
361	/**
362	* Dump a packet to debug log.
363	*
364	* @param pThis The virtio-net shared instance data.
365	* @param pbPacket The packet.
366	* @param cb The size of the packet.
367	* @param pszText A string denoting direction of packet transfer.
368	*/
369	DECLINLINE(void) vnetR3PacketDump(PVNETSTATE pThis, const uint8_t pbPacket, size_t cb, const char pszText)
370	{
371	# ifdef DEBUG
372	# if 0
373	Log(("%s %s packet #%d (%d bytes):\n",
374	INSTANCE(pThis), pszText, ++pThis->u32PktNo, cb));
375	Log3(("%.*Rhxd\n", cb, pbPacket));
376	# else
377	vboxEthPacketDump(INSTANCE(pThis), pszText, pbPacket, (uint32_t)cb);
378	# endif
379	# else
380	RT_NOREF4(pThis, pbPacket, cb, pszText);
381	# endif
382	}
383	#endif /* IN_RING3 */
384
385	/**
386	* Print features given in uFeatures to debug log.
387	*
388	* @param pThis The virtio-net shared instance data.
389	* @param fFeatures Descriptions of which features to print.
390	* @param pcszText A string to print before the list of features.
391	*/
392	DECLINLINE(void) vnetPrintFeatures(PVNETSTATE pThis, uint32_t fFeatures, const char *pcszText)
393	{
394	#ifdef LOG_ENABLED
395	static struct
396	{
397	uint32_t fMask;
398	const char *pcszDesc;
399	} const s_aFeatures[] =
400	{
401	{ VNET_F_CSUM, "host handles pkts w/ partial csum" },
402	{ VNET_F_GUEST_CSUM, "guest handles pkts w/ partial csum" },
403	{ VNET_F_MAC, "host has given MAC address" },
404	{ VNET_F_GSO, "host handles pkts w/ any GSO type" },
405	{ VNET_F_GUEST_TSO4, "guest can handle TSOv4 in" },
406	{ VNET_F_GUEST_TSO6, "guest can handle TSOv6 in" },
407	{ VNET_F_GUEST_ECN, "guest can handle TSO[6] w/ ECN in" },
408	{ VNET_F_GUEST_UFO, "guest can handle UFO in" },
409	{ VNET_F_HOST_TSO4, "host can handle TSOv4 in" },
410	{ VNET_F_HOST_TSO6, "host can handle TSOv6 in" },
411	{ VNET_F_HOST_ECN, "host can handle TSO[6] w/ ECN in" },
412	{ VNET_F_HOST_UFO, "host can handle UFO in" },
413	{ VNET_F_MRG_RXBUF, "host can merge receive buffers" },
414	{ VNET_F_STATUS, "virtio_net_config.status available" },
415	{ VNET_F_CTRL_VQ, "control channel available" },
416	{ VNET_F_CTRL_RX, "control channel RX mode support" },
417	{ VNET_F_CTRL_VLAN, "control channel VLAN filtering" }
418	};
419
420	Log3(("%s %s:\n", INSTANCE(pThis), pcszText));
421	for (unsigned i = 0; i < RT_ELEMENTS(s_aFeatures); ++i)
422	{
423	if (s_aFeatures[i].fMask & fFeatures)
424	Log3(("%s --> %s\n", INSTANCE(pThis), s_aFeatures[i].pcszDesc));
425	}
426	#else /* !LOG_ENABLED */
427	RT_NOREF3(pThis, fFeatures, pcszText);
428	#endif /* !LOG_ENABLED */
429	}
430
431	/**
432	* @interface_method_impl{VPCIIOCALLBACKS,pfnGetHostFeatures}
433	*/
434	static DECLCALLBACK(uint32_t) vnetIoCb_GetHostFeatures(PVPCISTATE pVPciState)
435	{
436	RT_NOREF_PV(pVPciState);
437
438	/* We support:
439	* - Host-provided MAC address
440	* - Link status reporting in config space
441	* - Control queue
442	* - RX mode setting
443	* - MAC filter table
444	* - VLAN filter
445	*/
446	return VNET_F_MAC
447	\| VNET_F_STATUS
448	\| VNET_F_CTRL_VQ
449	\| VNET_F_CTRL_RX
450	\| VNET_F_CTRL_VLAN
451	#ifdef VNET_WITH_GSO
452	\| VNET_F_CSUM
453	\| VNET_F_HOST_TSO4
454	\| VNET_F_HOST_TSO6
455	\| VNET_F_HOST_UFO
456	\| VNET_F_GUEST_CSUM /* We expect the guest to accept partial TCP checksums (see @bugref{4796}) */
457	\| VNET_F_GUEST_TSO4
458	\| VNET_F_GUEST_TSO6
459	\| VNET_F_GUEST_UFO
460	#endif
461	#ifdef VNET_WITH_MERGEABLE_RX_BUFS
462	\| VNET_F_MRG_RXBUF
463	#endif
464	;
465	}
466
467	/**
468	* @interface_method_impl{VPCIIOCALLBACKS,pfnGetHostMinimalFeatures}
469	*/
470	static DECLCALLBACK(uint32_t) vnetIoCb_GetHostMinimalFeatures(PVPCISTATE pVPciState)
471	{
472	RT_NOREF_PV(pVPciState);
473	return VNET_F_MAC;
474	}
475
476	/**
477	* @interface_method_impl{VPCIIOCALLBACKS,pfnSetHostFeatures}
478	*/
479	static DECLCALLBACK(void) vnetIoCb_SetHostFeatures(PVPCISTATE pVPciState, uint32_t fFeatures)
480	{
481	PVNETSTATE pThis = RT_FROM_MEMBER(pVPciState, VNETSTATE, VPCI);
482	/** @todo Nothing to do here yet */
483	LogFlow(("%s vnetIoCb_SetHostFeatures: uFeatures=%x\n", INSTANCE(pThis), fFeatures));
484	vnetPrintFeatures(pThis, fFeatures, "The guest negotiated the following features");
485	}
486
487	/**
488	* @interface_method_impl{VPCIIOCALLBACKS,pfnGetConfig}
489	*/
490	static DECLCALLBACK(int) vnetIoCb_GetConfig(PVPCISTATE pVPciState, uint32_t offCfg, uint32_t cb, void *data)
491	{
492	PVNETSTATE pThis = RT_FROM_MEMBER(pVPciState, VNETSTATE, VPCI);
493	if (offCfg + cb > sizeof(struct VNetPCIConfig))
494	{
495	Log(("%s vnetIoCb_GetConfig: Read beyond the config structure is attempted (offCfg=%#x cb=%x).\n", INSTANCE(pThis), offCfg, cb));
496	return VERR_IOM_IOPORT_UNUSED;
497	}
498	memcpy(data, (uint8_t *)&pThis->config + offCfg, cb);
499	return VINF_SUCCESS;
500	}
501
502	/**
503	* @interface_method_impl{VPCIIOCALLBACKS,pfnSetConfig}
504	*/
505	static DECLCALLBACK(int) vnetIoCb_SetConfig(PVPCISTATE pVPciState, uint32_t offCfg, uint32_t cb, void *data)
506	{
507	PVNETSTATE pThis = RT_FROM_MEMBER(pVPciState, VNETSTATE, VPCI);
508	if (offCfg + cb > sizeof(struct VNetPCIConfig))
509	{
510	Log(("%s vnetIoCb_SetConfig: Write beyond the config structure is attempted (offCfg=%#x cb=%x).\n", INSTANCE(pThis), offCfg, cb));
511	if (offCfg < sizeof(struct VNetPCIConfig))
512	memcpy((uint8_t *)&pThis->config + offCfg, data, sizeof(struct VNetPCIConfig) - offCfg);
513	return VINF_SUCCESS;
514	}
515	memcpy((uint8_t *)&pThis->config + offCfg, data, cb);
516	return VINF_SUCCESS;
517	}
518
519	/**
520	* @interface_method_impl{VPCIIOCALLBACKS,pfnReset}
521	*
522	* Hardware reset. Revert all registers to initial values.
523	*/
524	static DECLCALLBACK(int) vnetIoCb_Reset(PPDMDEVINS pDevIns)
525	{
526	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
527	#ifdef IN_RING3
528	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
529	#endif
530	Log(("%s Reset triggered\n", INSTANCE(pThis)));
531
532	int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
533	if (RT_UNLIKELY(rc != VINF_SUCCESS))
534	{
535	LogRel(("vnetIoCb_Reset failed to enter RX critical section!\n"));
536	return rc;
537	}
538	vpciReset(pDevIns, &pThis->VPCI);
539	vnetCsRxLeave(pThis);
540
541	/// @todo Implement reset
542	if (pThis->fCableConnected)
543	pThis->config.uStatus = VNET_S_LINK_UP;
544	else
545	pThis->config.uStatus = 0;
546	Log(("%s vnetIoCb_Reset: Link is %s\n", INSTANCE(pThis), pThis->fCableConnected ? "up" : "down"));
547
548	/*
549	* By default we pass all packets up since the older guests cannot control
550	* virtio mode.
551	*/
552	pThis->fPromiscuous = true;
553	pThis->fAllMulti = false;
554	pThis->cMacFilterEntries = 0;
555	memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC));
556	memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter));
557	pThis->uIsTransmitting = 0;
558	#ifndef IN_RING3
559	return VINF_IOM_R3_IOPORT_WRITE;
560	#else
561	if (pThisCC->pDrv)
562	pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, true);
563	return VINF_SUCCESS;
564	#endif
565	}
566
567
568	/**
569	* Wakeup the RX thread.
570	*/
571	static void vnetWakeupReceive(PPDMDEVINS pDevIns)
572	{
573	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
574	if ( pThis->fMaybeOutOfSpace
575	&& pThis->hEventMoreRxDescAvail != NIL_SUPSEMEVENT)
576	{
577	STAM_COUNTER_INC(&pThis->StatRxOverflowWakeup);
578	Log(("%s Waking up Out-of-RX-space semaphore\n", INSTANCE(pThis)));
579	int rc = PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hEventMoreRxDescAvail);
580	AssertRC(rc);
581	}
582	}
583
584	#ifdef IN_RING3
585
586	/**
587	* Helper function that raises an interrupt if the guest is ready to receive it.
588	*/
589	static int vnetR3RaiseInterrupt(PPDMDEVINS pDevIns, PVNETSTATE pThis, int rcBusy, uint8_t u8IntCause)
590	{
591	if (pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK)
592	return vpciRaiseInterrupt(pDevIns, &pThis->VPCI, rcBusy, u8IntCause);
593	return rcBusy;
594	}
595
596
597	/**
598	* Takes down the link temporarily if it's current status is up.
599	*
600	* This is used during restore and when replumbing the network link.
601	*
602	* The temporary link outage is supposed to indicate to the OS that all network
603	* connections have been lost and that it for instance is appropriate to
604	* renegotiate any DHCP lease.
605	*
606	* @param pDevIns The device instance.
607	* @param pThis The virtio-net shared instance data.
608	* @param pThisCC The virtio-net ring-3 instance data.
609	*/
610	static void vnetR3TempLinkDown(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
611	{
612	if (pThis->config.uStatus & VNET_S_LINK_UP)
613	{
614	pThis->config.uStatus &= ~VNET_S_LINK_UP;
615	vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
616	/* Restore the link back in 5 seconds. */
617	int rc = PDMDevHlpTimerSetMillies(pDevIns, pThisCC->hLinkUpTimer, pThis->cMsLinkUpDelay);
618	AssertRC(rc);
619	Log(("%s vnetR3TempLinkDown: Link is down temporarily\n", INSTANCE(pThis)));
620	}
621	}
622
623
624	/**
625	* @callback_method_impl{FNTMTIMERDEV, Link Up Timer handler.}
626	*/
627	static DECLCALLBACK(void) vnetR3LinkUpTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
628	{
629	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
630	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
631	RT_NOREF(pTimer, pvUser);
632
633	int rc = vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY);
634	AssertRCReturnVoid(rc);
635
636	pThis->config.uStatus \|= VNET_S_LINK_UP;
637	vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
638	vnetWakeupReceive(pDevIns);
639
640	vnetR3CsLeave(pDevIns, pThis);
641
642	Log(("%s vnetR3LinkUpTimer: Link is up\n", INSTANCE(pThis)));
643	if (pThisCC->pDrv)
644	pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, PDMNETWORKLINKSTATE_UP);
645	}
646
647	#endif /* IN_RING3 */
648
649	/**
650	* @interface_method_impl{VPCIIOCALLBACKS,pfnReady}
651	*
652	* This function is called when the driver becomes ready.
653	*/
654	static DECLCALLBACK(void) vnetIoCb_Ready(PPDMDEVINS pDevIns)
655	{
656	Log(("%s Driver became ready, waking up RX thread...\n", INSTANCE(PDMDEVINS_2_DATA(pDevIns, PVNETSTATE))));
657	vnetWakeupReceive(pDevIns);
658	}
659
660
661	/**
662	* I/O port callbacks.
663	*/
664	static const VPCIIOCALLBACKS g_IOCallbacks =
665	{
666	vnetIoCb_GetHostFeatures,
667	vnetIoCb_GetHostMinimalFeatures,
668	vnetIoCb_SetHostFeatures,
669	vnetIoCb_GetConfig,
670	vnetIoCb_SetConfig,
671	vnetIoCb_Reset,
672	vnetIoCb_Ready,
673	};
674
675
676	/**
677	* @callback_method_impl{FNIOMIOPORTNEWIN}
678	*/
679	static DECLCALLBACK(VBOXSTRICTRC) vnetIOPortIn(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
680	{
681	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
682	RT_NOREF(pvUser);
683	return vpciIOPortIn(pDevIns, &pThis->VPCI, offPort, pu32, cb, &g_IOCallbacks);
684	}
685
686
687	/**
688	* @callback_method_impl{FNIOMIOPORTNEWOUT}
689	*/
690	static DECLCALLBACK(VBOXSTRICTRC) vnetIOPortOut(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
691	{
692	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
693	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
694	RT_NOREF(pvUser);
695	return vpciIOPortOut(pDevIns, &pThis->VPCI, &pThisCC->VPCI, offPort, u32, cb, &g_IOCallbacks);
696	}
697
698
699	#ifdef IN_RING3
700
701	/**
702	* Check if the device can receive data now.
703	* This must be called before the pfnRecieve() method is called.
704	*
705	* @remarks As a side effect this function enables queue notification
706	* if it cannot receive because the queue is empty.
707	* It disables notification if it can receive.
708	*
709	* @returns VERR_NET_NO_BUFFER_SPACE if it cannot.
710	* @thread RX
711	*/
712	static int vnetR3CanReceive(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
713	{
714	int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
715	AssertRCReturn(rc, rc);
716
717	LogFlow(("%s vnetR3CanReceive\n", INSTANCE(pThis)));
718	if (!(pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK))
719	rc = VERR_NET_NO_BUFFER_SPACE;
720	else if (!vqueueIsReady(pThisCC->pRxQueue))
721	rc = VERR_NET_NO_BUFFER_SPACE;
722	else if (vqueueIsEmpty(pDevIns, pThisCC->pRxQueue))
723	{
724	vringSetNotification(pDevIns, &pThisCC->pRxQueue->VRing, true);
725	rc = VERR_NET_NO_BUFFER_SPACE;
726	}
727	else
728	{
729	vringSetNotification(pDevIns, &pThisCC->pRxQueue->VRing, false);
730	rc = VINF_SUCCESS;
731	}
732
733	LogFlow(("%s vnetR3CanReceive -> %Rrc\n", INSTANCE(pThis), rc));
734	vnetCsRxLeave(pThis);
735	return rc;
736	}
737
738	/**
739	* @interface_method_impl{PDMINETWORKDOWN,pfnWaitReceiveAvail}
740	*/
741	static DECLCALLBACK(int) vnetR3NetworkDown_WaitReceiveAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies)
742	{
743	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown);
744	PPDMDEVINS pDevIns = pThisCC->pDevIns;
745	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
746	LogFlow(("%s vnetR3NetworkDown_WaitReceiveAvail(cMillies=%u)\n", INSTANCE(pThis), cMillies));
747
748	int rc = vnetR3CanReceive(pDevIns, pThis, pThisCC);
749	if (RT_SUCCESS(rc))
750	return VINF_SUCCESS;
751
752	if (cMillies == 0)
753	return VERR_NET_NO_BUFFER_SPACE;
754
755	rc = VERR_INTERRUPTED;
756	ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, true);
757	STAM_PROFILE_START(&pThis->StatRxOverflow, a);
758
759	VMSTATE enmVMState;
760	while (RT_LIKELY( (enmVMState = PDMDevHlpVMState(pDevIns)) == VMSTATE_RUNNING
761	\|\| enmVMState == VMSTATE_RUNNING_LS))
762	{
763	int rc2 = vnetR3CanReceive(pDevIns, pThis, pThisCC);
764	if (RT_SUCCESS(rc2))
765	{
766	rc = VINF_SUCCESS;
767	break;
768	}
769	Log(("%s vnetR3NetworkDown_WaitReceiveAvail: waiting cMillies=%u...\n", INSTANCE(pThis), cMillies));
770	rc2 = PDMDevHlpSUPSemEventWaitNoResume(pDevIns, pThis->hEventMoreRxDescAvail, cMillies);
771	if (RT_FAILURE(rc2) && rc2 != VERR_TIMEOUT && rc2 != VERR_INTERRUPTED)
772	RTThreadSleep(1);
773	}
774	STAM_PROFILE_STOP(&pThis->StatRxOverflow, a);
775	ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, false);
776
777	LogFlow(("%s vnetR3NetworkDown_WaitReceiveAvail -> %d\n", INSTANCE(pThis), rc));
778	return rc;
779	}
780
781
782	/**
783	* @interface_method_impl{PDMIBASE,pfnQueryInterface,
784	* For VNETSTATECC::VPCI.IBase}
785	*/
786	static DECLCALLBACK(void ) vnetQueryInterface(struct PDMIBASE pInterface, const char *pszIID)
787	{
788	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, VPCI.IBase);
789
790	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThisCC->INetworkDown);
791	PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThisCC->INetworkConfig);
792
793	return vpciR3QueryInterface(&pThisCC->VPCI, pszIID);
794	}
795
796	/**
797	* Returns true if it is a broadcast packet.
798	*
799	* @returns true if destination address indicates broadcast.
800	* @param pvBuf The ethernet packet.
801	*/
802	DECLINLINE(bool) vnetR3IsBroadcast(const void *pvBuf)
803	{
804	static const uint8_t s_abBcastAddr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
805	return memcmp(pvBuf, s_abBcastAddr, sizeof(s_abBcastAddr)) == 0;
806	}
807
808	/**
809	* Returns true if it is a multicast packet.
810	*
811	* @remarks returns true for broadcast packets as well.
812	* @returns true if destination address indicates multicast.
813	* @param pvBuf The ethernet packet.
814	*/
815	DECLINLINE(bool) vnetR3IsMulticast(const void *pvBuf)
816	{
817	return ((char)pvBuf) & 1;
818	}
819
820	/**
821	* Determines if the packet is to be delivered to upper layer.
822	*
823	* @returns true if packet is intended for this node.
824	* @param pThis Pointer to the state structure.
825	* @param pvBuf The ethernet packet.
826	* @param cb Number of bytes available in the packet.
827	*/
828	static bool vnetR3AddressFilter(PVNETSTATE pThis, const void *pvBuf, size_t cb)
829	{
830	if (pThis->fPromiscuous)
831	return true;
832
833	/* Ignore everything outside of our VLANs */
834	uint16_t u16Ptr = (uint16_t)pvBuf;
835	/* Compare TPID with VLAN Ether Type */
836	if ( u16Ptr[6] == RT_H2BE_U16(0x8100)
837	&& !ASMBitTest(pThis->aVlanFilter, RT_BE2H_U16(u16Ptr[7]) & 0xFFF))
838	{
839	Log4(("%s vnetR3AddressFilter: not our VLAN, returning false\n", INSTANCE(pThis)));
840	return false;
841	}
842
843	if (vnetR3IsBroadcast(pvBuf))
844	return true;
845
846	if (pThis->fAllMulti && vnetR3IsMulticast(pvBuf))
847	return true;
848
849	if (!memcmp(pThis->config.mac.au8, pvBuf, sizeof(RTMAC)))
850	return true;
851	Log4(("%s vnetR3AddressFilter: %RTmac (conf) != %RTmac (dest)\n", INSTANCE(pThis), pThis->config.mac.au8, pvBuf));
852
853	for (unsigned i = 0; i < pThis->cMacFilterEntries; i++)
854	if (!memcmp(&pThis->aMacFilter[i], pvBuf, sizeof(RTMAC)))
855	return true;
856
857	Log2(("%s vnetR3AddressFilter: failed all tests, returning false, packet dump follows:\n", INSTANCE(pThis)));
858	vnetR3PacketDump(pThis, (const uint8_t *)pvBuf, cb, "<-- Incoming");
859
860	return false;
861	}
862
863	/**
864	* Pad and store received packet.
865	*
866	* @remarks Make sure that the packet appears to upper layer as one coming
867	* from real Ethernet: pad it and insert FCS.
868	*
869	* @returns VBox status code.
870	* @param pDevIns The device instance.
871	* @param pThis The virtio-net shared instance data.
872	* @param pvBuf The available data.
873	* @param cb Number of bytes available in the buffer.
874	* @thread RX
875	*/
876	static int vnetR3HandleRxPacket(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC,
877	const void *pvBuf, size_t cb, PCPDMNETWORKGSO pGso)
878	{
879	VNETHDRMRX Hdr;
880	unsigned cbHdr;
881	RTGCPHYS addrHdrMrx = 0;
882
883	if (pGso)
884	{
885	Log2(("%s vnetR3HandleRxPacket: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n",
886	INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2));
887	Hdr.Hdr.u8Flags = VNETHDR_F_NEEDS_CSUM;
888	switch (pGso->u8Type)
889	{
890	case PDMNETWORKGSOTYPE_IPV4_TCP:
891	Hdr.Hdr.u8GSOType = VNETHDR_GSO_TCPV4;
892	Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETTCP, th_sum);
893	break;
894	case PDMNETWORKGSOTYPE_IPV6_TCP:
895	Hdr.Hdr.u8GSOType = VNETHDR_GSO_TCPV6;
896	Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETTCP, th_sum);
897	break;
898	case PDMNETWORKGSOTYPE_IPV4_UDP:
899	Hdr.Hdr.u8GSOType = VNETHDR_GSO_UDP;
900	Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETUDP, uh_sum);
901	break;
902	default:
903	return VERR_INVALID_PARAMETER;
904	}
905	Hdr.Hdr.u16HdrLen = pGso->cbHdrsTotal;
906	Hdr.Hdr.u16GSOSize = pGso->cbMaxSeg;
907	Hdr.Hdr.u16CSumStart = pGso->offHdr2;
908	Hdr.u16NumBufs = 0;
909	STAM_REL_COUNTER_INC(&pThis->StatReceiveGSO);
910	}
911	else
912	{
913	Hdr.Hdr.u8Flags = 0;
914	Hdr.Hdr.u8GSOType = VNETHDR_GSO_NONE;
915	Hdr.Hdr.u16HdrLen = 0;
916	Hdr.Hdr.u16GSOSize = 0;
917	Hdr.Hdr.u16CSumStart = 0;
918	Hdr.Hdr.u16CSumOffset = 0;
919	Hdr.u16NumBufs = 0;
920	}
921
922	if (vnetR3MergeableRxBuffers(pThis))
923	cbHdr = sizeof(VNETHDRMRX);
924	else
925	cbHdr = sizeof(VNETHDR);
926
927	vnetR3PacketDump(pThis, (const uint8_t *)pvBuf, cb, "<-- Incoming");
928
929	unsigned int uOffset = 0;
930	unsigned int nElem;
931	for (nElem = 0; uOffset < cb; nElem++)
932	{
933	VQUEUEELEM elem;
934	unsigned int nSeg = 0, uElemSize = 0, cbReserved = 0;
935
936	if (!vqueueGet(pDevIns, &pThis->VPCI, pThisCC->pRxQueue, &elem))
937	{
938	/*
939	* @todo: It is possible to run out of RX buffers if only a few
940	* were added and we received a big packet.
941	*/
942	Log(("%s vnetR3HandleRxPacket: Suddenly there is no space in receive queue!\n", INSTANCE(pThis)));
943	return VERR_INTERNAL_ERROR;
944	}
945
946	if (elem.cIn < 1)
947	{
948	Log(("%s vnetR3HandleRxPacket: No writable descriptors in receive queue!\n", INSTANCE(pThis)));
949	return VERR_INTERNAL_ERROR;
950	}
951
952	if (nElem == 0)
953	{
954	if (vnetR3MergeableRxBuffers(pThis))
955	{
956	addrHdrMrx = elem.aSegsIn[nSeg].addr;
957	cbReserved = cbHdr;
958	}
959	else
960	{
961	/* The very first segment of the very first element gets the header. */
962	if (elem.aSegsIn[nSeg].cb != sizeof(VNETHDR))
963	{
964	Log(("%s vnetR3HandleRxPacket: The first descriptor does match the header size!\n", INSTANCE(pThis)));
965	return VERR_INTERNAL_ERROR;
966	}
967	elem.aSegsIn[nSeg++].pv = &Hdr;
968	}
969	uElemSize += cbHdr;
970	}
971	while (nSeg < elem.cIn && uOffset < cb)
972	{
973	unsigned int uSize = (unsigned int)RT_MIN(elem.aSegsIn[nSeg].cb - (nSeg?0:cbReserved),
974	cb - uOffset);
975	elem.aSegsIn[nSeg++].pv = (uint8_t*)pvBuf + uOffset;
976	uOffset += uSize;
977	uElemSize += uSize;
978	}
979	STAM_PROFILE_START(&pThis->StatReceiveStore, a);
980	vqueuePut(pDevIns, &pThis->VPCI, pThisCC->pRxQueue, &elem, uElemSize, cbReserved);
981	STAM_PROFILE_STOP(&pThis->StatReceiveStore, a);
982	if (!vnetR3MergeableRxBuffers(pThis))
983	break;
984	cbReserved = 0;
985	}
986	if (vnetR3MergeableRxBuffers(pThis))
987	{
988	Hdr.u16NumBufs = nElem;
989	int rc = PDMDevHlpPCIPhysWrite(pDevIns, addrHdrMrx,
990	&Hdr, sizeof(Hdr));
991	if (RT_FAILURE(rc))
992	{
993	Log(("%s vnetR3HandleRxPacket: Failed to write merged RX buf header: %Rrc\n", INSTANCE(pThis), rc));
994	return rc;
995	}
996	}
997	vqueueSync(pDevIns, &pThis->VPCI, pThisCC->pRxQueue);
998	if (uOffset < cb)
999	{
1000	Log(("%s vnetR3HandleRxPacket: Packet did not fit into RX queue (packet size=%u)!\n", INSTANCE(pThis), cb));
1001	return VERR_TOO_MUCH_DATA;
1002	}
1003
1004	return VINF_SUCCESS;
1005	}
1006
1007	/**
1008	* @interface_method_impl{PDMINETWORKDOWN,pfnReceiveGso}
1009	*/
1010	static DECLCALLBACK(int) vnetR3NetworkDown_ReceiveGso(PPDMINETWORKDOWN pInterface, const void *pvBuf,
1011	size_t cb, PCPDMNETWORKGSO pGso)
1012	{
1013	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown);
1014	PPDMDEVINS pDevIns = pThisCC->pDevIns;
1015	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1016
1017	if (pGso)
1018	{
1019	uint32_t uFeatures = pThis->VPCI.uGuestFeatures;
1020
1021	switch (pGso->u8Type)
1022	{
1023	case PDMNETWORKGSOTYPE_IPV4_TCP:
1024	uFeatures &= VNET_F_GUEST_TSO4;
1025	break;
1026	case PDMNETWORKGSOTYPE_IPV6_TCP:
1027	uFeatures &= VNET_F_GUEST_TSO6;
1028	break;
1029	case PDMNETWORKGSOTYPE_IPV4_UDP:
1030	case PDMNETWORKGSOTYPE_IPV6_UDP:
1031	uFeatures &= VNET_F_GUEST_UFO;
1032	break;
1033	default:
1034	uFeatures = 0;
1035	break;
1036	}
1037	if (!uFeatures)
1038	{
1039	Log2(("%s vnetR3NetworkDown_ReceiveGso: GSO type (0x%x) not supported\n", INSTANCE(pThis), pGso->u8Type));
1040	return VERR_NOT_SUPPORTED;
1041	}
1042	}
1043
1044	Log2(("%s vnetR3NetworkDown_ReceiveGso: pvBuf=%p cb=%u pGso=%p\n", INSTANCE(pThis), pvBuf, cb, pGso));
1045	int rc = vnetR3CanReceive(pDevIns, pThis, pThisCC);
1046	if (RT_FAILURE(rc))
1047	return rc;
1048
1049	/* Drop packets if VM is not running or cable is disconnected. */
1050	VMSTATE enmVMState = PDMDevHlpVMState(pDevIns);
1051	if (( enmVMState != VMSTATE_RUNNING
1052	&& enmVMState != VMSTATE_RUNNING_LS)
1053	\|\| !(pThis->config.uStatus & VNET_S_LINK_UP))
1054	return VINF_SUCCESS;
1055
1056	STAM_PROFILE_START(&pThis->StatReceive, a);
1057	vpciR3SetReadLed(&pThis->VPCI, true);
1058	if (vnetR3AddressFilter(pThis, pvBuf, cb))
1059	{
1060	rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1061	if (RT_SUCCESS(rc))
1062	{
1063	rc = vnetR3HandleRxPacket(pDevIns, pThis, pThisCC, pvBuf, cb, pGso);
1064	STAM_REL_COUNTER_ADD(&pThis->StatReceiveBytes, cb);
1065	vnetCsRxLeave(pThis);
1066	}
1067	}
1068	vpciR3SetReadLed(&pThis->VPCI, false);
1069	STAM_PROFILE_STOP(&pThis->StatReceive, a);
1070	return rc;
1071	}
1072
1073	/**
1074	* @interface_method_impl{PDMINETWORKDOWN,pfnReceive}
1075	*/
1076	static DECLCALLBACK(int) vnetR3NetworkDown_Receive(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
1077	{
1078	return vnetR3NetworkDown_ReceiveGso(pInterface, pvBuf, cb, NULL);
1079	}
1080
1081	/**
1082	* @interface_method_impl{PDMINETWORKCONFIG,pfnGetMac}
1083	*/
1084	static DECLCALLBACK(int) vnetR3NetworkConfig_GetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
1085	{
1086	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig);
1087	PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE);
1088	memcpy(pMac, pThis->config.mac.au8, sizeof(RTMAC));
1089	return VINF_SUCCESS;
1090	}
1091
1092	/**
1093	* @interface_method_impl{PDMINETWORKCONFIG,pfnGetLinkState}
1094	*/
1095	static DECLCALLBACK(PDMNETWORKLINKSTATE) vnetR3NetworkConfig_GetLinkState(PPDMINETWORKCONFIG pInterface)
1096	{
1097	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig);
1098	PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE);
1099	if (pThis->config.uStatus & VNET_S_LINK_UP)
1100	return PDMNETWORKLINKSTATE_UP;
1101	return PDMNETWORKLINKSTATE_DOWN;
1102	}
1103
1104	/**
1105	* @interface_method_impl{PDMINETWORKCONFIG,pfnSetLinkState}
1106	*/
1107	static DECLCALLBACK(int) vnetR3NetworkConfig_SetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
1108	{
1109	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig);
1110	PPDMDEVINS pDevIns = pThisCC->pDevIns;
1111	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1112	bool fOldUp = !!(pThis->config.uStatus & VNET_S_LINK_UP);
1113	bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
1114
1115	Log(("%s vnetR3NetworkConfig_SetLinkState: enmState=%d\n", INSTANCE(pThis), enmState));
1116	if (enmState == PDMNETWORKLINKSTATE_DOWN_RESUME)
1117	{
1118	if (fOldUp)
1119	{
1120	/*
1121	* We bother to bring the link down only if it was up previously. The UP link state
1122	* notification will be sent when the link actually goes up in vnetR3LinkUpTimer().
1123	*/
1124	vnetR3TempLinkDown(pDevIns, pThis, pThisCC);
1125	if (pThisCC->pDrv)
1126	pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, enmState);
1127	}
1128	}
1129	else if (fNewUp != fOldUp)
1130	{
1131	if (fNewUp)
1132	{
1133	Log(("%s Link is up\n", INSTANCE(pThis)));
1134	pThis->fCableConnected = true;
1135	pThis->config.uStatus \|= VNET_S_LINK_UP;
1136	vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
1137	}
1138	else
1139	{
1140	/* The link was brought down explicitly, make sure it won't come up by timer. */
1141	PDMDevHlpTimerStop(pDevIns, pThisCC->hLinkUpTimer);
1142	Log(("%s Link is down\n", INSTANCE(pThis)));
1143	pThis->fCableConnected = false;
1144	pThis->config.uStatus &= ~VNET_S_LINK_UP;
1145	vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
1146	}
1147	if (pThisCC->pDrv)
1148	pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, enmState);
1149	}
1150	return VINF_SUCCESS;
1151	}
1152
1153	/**
1154	* @callback_method_impl{FNVPCIQUEUECALLBACK, The RX queue}
1155	*/
1156	static DECLCALLBACK(void) vnetR3QueueReceive(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1157	{
1158	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1159	RT_NOREF(pThis, pQueue);
1160	Log(("%s Receive buffers has been added, waking up receive thread.\n", INSTANCE(pThis)));
1161	vnetWakeupReceive(pDevIns);
1162	}
1163
1164	/**
1165	* Sets up the GSO context according to the Virtio header.
1166	*
1167	* @param pGso The GSO context to setup.
1168	* @param pCtx The context descriptor.
1169	*/
1170	DECLINLINE(PPDMNETWORKGSO) vnetR3SetupGsoCtx(PPDMNETWORKGSO pGso, VNETHDR const *pHdr)
1171	{
1172	pGso->u8Type = PDMNETWORKGSOTYPE_INVALID;
1173
1174	if (pHdr->u8GSOType & VNETHDR_GSO_ECN)
1175	{
1176	AssertMsgFailed(("Unsupported flag in virtio header: ECN\n"));
1177	return NULL;
1178	}
1179	switch (pHdr->u8GSOType & ~VNETHDR_GSO_ECN)
1180	{
1181	case VNETHDR_GSO_TCPV4:
1182	pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_TCP;
1183	pGso->cbHdrsSeg = pHdr->u16HdrLen;
1184	break;
1185	case VNETHDR_GSO_TCPV6:
1186	pGso->u8Type = PDMNETWORKGSOTYPE_IPV6_TCP;
1187	pGso->cbHdrsSeg = pHdr->u16HdrLen;
1188	break;
1189	case VNETHDR_GSO_UDP:
1190	pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_UDP;
1191	pGso->cbHdrsSeg = pHdr->u16CSumStart;
1192	break;
1193	default:
1194	return NULL;
1195	}
1196	if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1197	pGso->offHdr2 = pHdr->u16CSumStart;
1198	else
1199	{
1200	AssertMsgFailed(("GSO without checksum offloading!\n"));
1201	return NULL;
1202	}
1203	pGso->offHdr1 = sizeof(RTNETETHERHDR);
1204	pGso->cbHdrsTotal = pHdr->u16HdrLen;
1205	pGso->cbMaxSeg = pHdr->u16GSOSize;
1206	return pGso;
1207	}
1208
1209	DECLINLINE(uint16_t) vnetR3CSum16(const void *pvBuf, size_t cb)
1210	{
1211	uint32_t csum = 0;
1212	uint16_t pu16 = (uint16_t )pvBuf;
1213
1214	while (cb > 1)
1215	{
1216	csum += *pu16++;
1217	cb -= 2;
1218	}
1219	if (cb)
1220	csum += (uint8_t)pu16;
1221	while (csum >> 16)
1222	csum = (csum >> 16) + (csum & 0xFFFF);
1223	return ~csum;
1224	}
1225
1226	DECLINLINE(void) vnetR3CompleteChecksum(uint8_t *pBuf, size_t cbSize, uint16_t uStart, uint16_t uOffset)
1227	{
1228	AssertReturnVoid(uStart < cbSize);
1229	AssertReturnVoid(uStart + uOffset + sizeof(uint16_t) <= cbSize);
1230	(uint16_t )(pBuf + uStart + uOffset) = vnetR3CSum16(pBuf + uStart, cbSize - uStart);
1231	}
1232
1233	static bool vnetR3ReadHeader(PPDMDEVINS pDevIns, RTGCPHYS GCPhys, PVNETHDR pHdr, uint32_t cbMax)
1234	{
1235	int rc = PDMDevHlpPhysRead(pDevIns, GCPhys, pHdr, sizeof(pHdr)); /* @todo r=bird: Why not PDMDevHlpPCIPhysRead? */
1236	if (RT_FAILURE(rc))
1237	return false;
1238
1239	Log4(("virtio-net: header flags=%x gso-type=%x len=%x gso-size=%x csum-start=%x csum-offset=%x cb=%x\n",
1240	pHdr->u8Flags, pHdr->u8GSOType, pHdr->u16HdrLen, pHdr->u16GSOSize, pHdr->u16CSumStart, pHdr->u16CSumOffset, cbMax));
1241
1242	if (pHdr->u8GSOType)
1243	{
1244	uint32_t u32MinHdrSize;
1245
1246	/* Segmentation offloading cannot be done without checksumming. */
1247	if (RT_UNLIKELY(!(pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)))
1248	return false;
1249	/* We do not support ECN. */
1250	if (RT_UNLIKELY(pHdr->u8GSOType & VNETHDR_GSO_ECN))
1251	return false;
1252	switch (pHdr->u8GSOType)
1253	{
1254	case VNETHDR_GSO_TCPV4:
1255	case VNETHDR_GSO_TCPV6:
1256	u32MinHdrSize = sizeof(RTNETTCP);
1257	break;
1258	case VNETHDR_GSO_UDP:
1259	u32MinHdrSize = 0;
1260	break;
1261	default:
1262	return false;
1263	}
1264	/* Header+MSS must not exceed the packet size. */
1265	if (RT_UNLIKELY(u32MinHdrSize + pHdr->u16CSumStart + pHdr->u16GSOSize > cbMax))
1266	return false;
1267	}
1268	/* Checksum must fit into the frame (validating both checksum fields). */
1269	if ( (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1270	&& sizeof(uint16_t) + pHdr->u16CSumStart + pHdr->u16CSumOffset > cbMax)
1271	return false;
1272	Log4(("virtio-net: return true\n"));
1273	return true;
1274	}
1275
1276	static int vnetR3TransmitFrame(PVNETSTATE pThis, PVNETSTATECC pThisCC, PPDMSCATTERGATHER pSgBuf,
1277	PPDMNETWORKGSO pGso, PVNETHDR pHdr)
1278	{
1279	vnetR3PacketDump(pThis, (uint8_t *)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, "--> Outgoing");
1280	if (pGso)
1281	{
1282	/* Some guests (RHEL) may report HdrLen excluding transport layer header! */
1283	/*
1284	* We cannot use cdHdrs provided by the guest because of different ways
1285	* it gets filled out by different versions of kernels.
1286	*/
1287	//if (pGso->cbHdrs < pHdr->u16CSumStart + pHdr->u16CSumOffset + 2)
1288	{
1289	Log4(("%s vnetR3TransmitPendingPackets: HdrLen before adjustment %d.\n",
1290	INSTANCE(pThis), pGso->cbHdrsTotal));
1291	switch (pGso->u8Type)
1292	{
1293	case PDMNETWORKGSOTYPE_IPV4_TCP:
1294	case PDMNETWORKGSOTYPE_IPV6_TCP:
1295	pGso->cbHdrsTotal = pHdr->u16CSumStart +
1296	((PRTNETTCP)(((uint8_t)pSgBuf->aSegs[0].pvSeg) + pHdr->u16CSumStart))->th_off 4;
1297	AssertMsgReturn(pSgBuf->cbUsed > pGso->cbHdrsTotal,
1298	("cbHdrsTotal exceeds size of frame"), VERR_BUFFER_OVERFLOW);
1299	pGso->cbHdrsSeg = pGso->cbHdrsTotal;
1300	break;
1301	case PDMNETWORKGSOTYPE_IPV4_UDP:
1302	pGso->cbHdrsTotal = (uint8_t)(pHdr->u16CSumStart + sizeof(RTNETUDP));
1303	pGso->cbHdrsSeg = pHdr->u16CSumStart;
1304	break;
1305	}
1306	/* Update GSO structure embedded into the frame */
1307	((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsTotal = pGso->cbHdrsTotal;
1308	((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsSeg = pGso->cbHdrsSeg;
1309	Log4(("%s vnetR3TransmitPendingPackets: adjusted HdrLen to %d.\n",
1310	INSTANCE(pThis), pGso->cbHdrsTotal));
1311	}
1312	Log2(("%s vnetR3TransmitPendingPackets: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n",
1313	INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2));
1314	STAM_REL_COUNTER_INC(&pThis->StatTransmitGSO);
1315	}
1316	else if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1317	{
1318	STAM_REL_COUNTER_INC(&pThis->StatTransmitCSum);
1319	/*
1320	* This is not GSO frame but checksum offloading is requested.
1321	*/
1322	vnetR3CompleteChecksum((uint8_t*)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed,
1323	pHdr->u16CSumStart, pHdr->u16CSumOffset);
1324	}
1325
1326	return pThisCC->pDrv->pfnSendBuf(pThisCC->pDrv, pSgBuf, false);
1327	}
1328
1329	static void vnetR3TransmitPendingPackets(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC,
1330	PVQUEUE pQueue, bool fOnWorkerThread)
1331	{
1332	/*
1333	* Only one thread is allowed to transmit at a time, others should skip
1334	* transmission as the packets will be picked up by the transmitting
1335	* thread.
1336	*/
1337	if (!ASMAtomicCmpXchgU32(&pThis->uIsTransmitting, 1, 0))
1338	return;
1339
1340	if ((pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK) == 0)
1341	{
1342	Log(("%s Ignoring transmit requests from non-existent driver (status=0x%x).\n", INSTANCE(pThis), pThis->VPCI.uStatus));
1343	return;
1344	}
1345
1346	if (!pThis->fCableConnected)
1347	{
1348	Log(("%s Ignoring transmit requests while cable is disconnected.\n", INSTANCE(pThis)));
1349	return;
1350	}
1351
1352	PPDMINETWORKUP pDrv = pThisCC->pDrv;
1353	if (pDrv)
1354	{
1355	int rc = pDrv->pfnBeginXmit(pDrv, fOnWorkerThread);
1356	Assert(rc == VINF_SUCCESS \|\| rc == VERR_TRY_AGAIN);
1357	if (rc == VERR_TRY_AGAIN)
1358	{
1359	ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1360	return;
1361	}
1362	}
1363
1364	unsigned int cbHdr;
1365	if (vnetR3MergeableRxBuffers(pThis))
1366	cbHdr = sizeof(VNETHDRMRX);
1367	else
1368	cbHdr = sizeof(VNETHDR);
1369
1370	Log3(("%s vnetR3TransmitPendingPackets: About to transmit %d pending packets\n",
1371	INSTANCE(pThis), vringReadAvailIndex(pDevIns, &pThisCC->pTxQueue->VRing) - pThisCC->pTxQueue->uNextAvailIndex));
1372
1373	vpciR3SetWriteLed(&pThis->VPCI, true);
1374
1375	/*
1376	* Do not remove descriptors from available ring yet, try to allocate the
1377	* buffer first.
1378	*/
1379	VQUEUEELEM elem; /* This bugger is big! ~48KB on 64-bit hosts. */
1380	while (vqueuePeek(pDevIns, &pThis->VPCI, pQueue, &elem))
1381	{
1382	unsigned int uOffset = 0;
1383	if (elem.cOut < 2 \|\| elem.aSegsOut[0].cb != cbHdr)
1384	{
1385	Log(("%s vnetR3QueueTransmit: The first segment is not the header! (%u < 2 \|\| %u != %u).\n",
1386	INSTANCE(pThis), elem.cOut, elem.aSegsOut[0].cb, cbHdr));
1387	break; /* For now we simply ignore the header, but it must be there anyway! */
1388	}
1389	RT_UNTRUSTED_VALIDATED_FENCE();
1390
1391	VNETHDR Hdr;
1392	unsigned int uSize = 0;
1393	STAM_PROFILE_ADV_START(&pThis->StatTransmit, a);
1394
1395	/* Compute total frame size. */
1396	for (unsigned int i = 1; i < elem.cOut && uSize < VNET_MAX_FRAME_SIZE; i++)
1397	uSize += elem.aSegsOut[i].cb;
1398	Log5(("%s vnetR3TransmitPendingPackets: complete frame is %u bytes.\n", INSTANCE(pThis), uSize));
1399	Assert(uSize <= VNET_MAX_FRAME_SIZE);
1400
1401	/* Truncate oversized frames. */
1402	if (uSize > VNET_MAX_FRAME_SIZE)
1403	uSize = VNET_MAX_FRAME_SIZE;
1404	if (pThisCC->pDrv && vnetR3ReadHeader(pDevIns, elem.aSegsOut[0].addr, &Hdr, uSize))
1405	{
1406	RT_UNTRUSTED_VALIDATED_FENCE();
1407	STAM_REL_COUNTER_INC(&pThis->StatTransmitPackets);
1408	STAM_PROFILE_START(&pThis->StatTransmitSend, a);
1409
1410	PDMNETWORKGSO Gso;
1411	PDMNETWORKGSO *pGso = vnetR3SetupGsoCtx(&Gso, &Hdr);
1412
1413	/** @todo Optimize away the extra copying! (lazy bird) */
1414	PPDMSCATTERGATHER pSgBuf;
1415	int rc = pThisCC->pDrv->pfnAllocBuf(pThisCC->pDrv, uSize, pGso, &pSgBuf);
1416	if (RT_SUCCESS(rc))
1417	{
1418	Assert(pSgBuf->cSegs == 1);
1419	pSgBuf->cbUsed = uSize;
1420
1421	/* Assemble a complete frame. */
1422	for (unsigned int i = 1; i < elem.cOut && uSize > 0; i++)
1423	{
1424	unsigned int cbSegment = RT_MIN(uSize, elem.aSegsOut[i].cb);
1425	PDMDevHlpPhysRead(pDevIns, elem.aSegsOut[i].addr,
1426	((uint8_t*)pSgBuf->aSegs[0].pvSeg) + uOffset,
1427	cbSegment);
1428	uOffset += cbSegment;
1429	uSize -= cbSegment;
1430	}
1431	rc = vnetR3TransmitFrame(pThis, pThisCC, pSgBuf, pGso, &Hdr);
1432	}
1433	else
1434	{
1435	Log4(("virtio-net: failed to allocate SG buffer: size=%u rc=%Rrc\n", uSize, rc));
1436	STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1437	STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1438	/* Stop trying to fetch TX descriptors until we get more bandwidth. */
1439	break;
1440	}
1441
1442	STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1443	STAM_REL_COUNTER_ADD(&pThis->StatTransmitBytes, uOffset);
1444	}
1445
1446	/* Remove this descriptor chain from the available ring */
1447	vqueueSkip(pDevIns, &pThis->VPCI, pQueue);
1448	vqueuePut(pDevIns, &pThis->VPCI, pQueue, &elem, sizeof(VNETHDR) + uOffset);
1449	vqueueSync(pDevIns, &pThis->VPCI, pQueue);
1450	STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1451	}
1452	vpciR3SetWriteLed(&pThis->VPCI, false);
1453
1454	if (pDrv)
1455	pDrv->pfnEndXmit(pDrv);
1456	ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1457	}
1458
1459	/**
1460	* @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
1461	*/
1462	static DECLCALLBACK(void) vnetR3NetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
1463	{
1464	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown);
1465	PPDMDEVINS pDevIns = pThisCC->pDevIns;
1466	PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE);
1467	STAM_COUNTER_INC(&pThis->StatTransmitByNetwork);
1468	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /fOnWorkerThread/);
1469	}
1470
1471	# ifdef VNET_TX_DELAY
1472
1473	/**
1474	* @callback_method_impl{FNVPCIQUEUECALLBACK, The TX queue}
1475	*/
1476	static DECLCALLBACK(void) vnetR3QueueTransmit(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1477	{
1478	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1479	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1480
1481	if (PDMDevHlpTimerIsActive(pDevIns, pThis->hTxTimer))
1482	{
1483	PDMDevHlpTimerStop(pDevIns, pThis->hTxTimer);
1484	Log3(("%s vnetR3QueueTransmit: Got kicked with notification disabled, re-enable notification and flush TX queue\n", INSTANCE(pThis)));
1485	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pQueue, false /fOnWorkerThread/);
1486	if (RT_FAILURE(vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY)))
1487	LogRel(("vnetR3QueueTransmit: Failed to enter critical section!/n"));
1488	else
1489	{
1490	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true);
1491	vnetR3CsLeave(pDevIns, pThis);
1492	}
1493	}
1494	else
1495	{
1496	if (RT_FAILURE(vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY)))
1497	LogRel(("vnetR3QueueTransmit: Failed to enter critical section!/n"));
1498	else
1499	{
1500	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, false);
1501	PDMDevHlpTimerSetMicro(pDevIns, pThis->hTxTimer, VNET_TX_DELAY);
1502	pThis->u64NanoTS = RTTimeNanoTS();
1503	vnetR3CsLeave(pDevIns, pThis);
1504	}
1505	}
1506	}
1507
1508	/**
1509	* @callback_method_impl{FNTMTIMERDEV, Transmit Delay Timer handler.}
1510	*/
1511	static DECLCALLBACK(void) vnetR3TxTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
1512	{
1513	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1514	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1515	RT_NOREF(pTimer, pvUser);
1516
1517	uint32_t u32MicroDiff = (uint32_t)((RTTimeNanoTS() - pThis->u64NanoTS) / 1000);
1518	if (u32MicroDiff < pThis->u32MinDiff)
1519	pThis->u32MinDiff = u32MicroDiff;
1520	if (u32MicroDiff > pThis->u32MaxDiff)
1521	pThis->u32MaxDiff = u32MicroDiff;
1522	pThis->u32AvgDiff = (pThis->u32AvgDiff * pThis->u32i + u32MicroDiff) / (pThis->u32i + 1);
1523	pThis->u32i++;
1524	Log3(("vnetR3TxTimer: Expired, diff %9d usec, avg %9d usec, min %9d usec, max %9d usec\n",
1525	u32MicroDiff, pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
1526
1527	// Log3(("%s vnetR3TxTimer: Expired\n", INSTANCE(pThis)));
1528	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /fOnWorkerThread/);
1529	if (RT_FAILURE(vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY)))
1530	{
1531	LogRel(("vnetR3TxTimer: Failed to enter critical section!/n"));
1532	return;
1533	}
1534	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true);
1535	vnetR3CsLeave(pDevIns, pThis);
1536	}
1537
1538	DECLINLINE(int) vnetR3CreateTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1539	{
1540	RT_NOREF(pDevIns, pThis, pThisCC);
1541	return VINF_SUCCESS;
1542	}
1543
1544	DECLINLINE(void) vnetR3DestroyTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1545	{
1546	RT_NOREF(pDevIns, pThis, pThisCC);
1547	}
1548
1549	# else /* !VNET_TX_DELAY */
1550
1551	/**
1552	* @callback_method_impl{FNPDMTHREADDEV}
1553	*/
1554	static DECLCALLBACK(int) vnetR3TxThread(PPDMDEVINS pDevIns, PPDMTHREAD pThread)
1555	{
1556	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1557	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1558
1559	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
1560	return VINF_SUCCESS;
1561
1562	int rc = VINF_SUCCESS;
1563	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
1564	{
1565	rc = PDMDevHlpSUPSemEventWaitNoResume(pDevIns, pThis->hTxEvent, RT_INDEFINITE_WAIT);
1566	if (RT_UNLIKELY(pThread->enmState != PDMTHREADSTATE_RUNNING))
1567	break;
1568	STAM_COUNTER_INC(&pThis->StatTransmitByThread);
1569	while (true)
1570	{
1571	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /fOnWorkerThread/); /// @todo shouldn't it be true instead?
1572	Log(("vnetR3TxThread: enable kicking and get to sleep\n"));
1573	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true);
1574	if (vqueueIsEmpty(pDevIns, pThisCC->pTxQueue))
1575	break;
1576	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, false);
1577	}
1578	}
1579
1580	return rc;
1581	}
1582
1583	/**
1584	* @callback_method_impl{FNPDMTHREADWAKEUPDEV}
1585	*/
1586	static DECLCALLBACK(int) vnetR3TxThreadWakeUp(PPDMDEVINS pDevIns, PPDMTHREAD pThread)
1587	{
1588	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1589	RT_NOREF(pThread);
1590	return PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTxEvent);
1591	}
1592
1593	static int vnetR3CreateTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1594	{
1595	int rc = PDMDevHlpSUPSemEventCreate(pDevIns, &pThis->hTxEvent);
1596	if (RT_SUCCESS(rc))
1597	{
1598	rc = PDMDevHlpThreadCreate(pDevIns, &pThisCC->pTxThread, NULL, vnetR3TxThread,
1599	vnetR3TxThreadWakeUp, 0, RTTHREADTYPE_IO, INSTANCE(pThis));
1600	if (RT_FAILURE(rc))
1601	PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("VNET: Failed to create worker thread %s"), INSTANCE(pThis));
1602	}
1603	else
1604	PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("VNET: Failed to create SUP event semaphore"));
1605	return rc;
1606	}
1607
1608	static void vnetR3DestroyTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1609	{
1610	if (pThisCC->pTxThread)
1611	{
1612	/* Destroy the thread. */
1613	int rcThread;
1614	int rc = PDMDevHlpThreadDestroy(pDevIns, pThisCC->pTxThread, &rcThread);
1615	if (RT_FAILURE(rc) \|\| RT_FAILURE(rcThread))
1616	AssertMsgFailed(("%s Failed to destroy async IO thread rc=%Rrc rcThread=%Rrc\n", __FUNCTION__, rc, rcThread));
1617	pThisCC->pTxThread = NULL;
1618	}
1619
1620	if (pThis->hTxEvent != NIL_SUPSEMEVENT)
1621	{
1622	PDMDevHlpSUPSemEventClose(pDevIns, pThis->hTxEvent);
1623	pThis->hTxEvent = NIL_SUPSEMEVENT;
1624	}
1625	}
1626
1627	/**
1628	* @callback_method_impl{FNVPCIQUEUECALLBACK, The TX queue}
1629	*/
1630	static DECLCALLBACK(void) vnetR3QueueTransmit(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1631	{
1632	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1633
1634	Log(("vnetR3QueueTransmit: disable kicking and wake up TX thread\n"));
1635	vringSetNotification(pDevIns, &pQueue->VRing, false);
1636	int rc = PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTxEvent);
1637	AssertRC(rc);
1638	}
1639
1640	# endif /* !VNET_TX_DELAY */
1641
1642	static uint8_t vnetR3ControlRx(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC,
1643	PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1644	{
1645	uint8_t u8Ack = VNET_OK;
1646	uint8_t fOn, fDrvWasPromisc = pThis->fPromiscuous \| pThis->fAllMulti;
1647	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &fOn, sizeof(fOn));
1648	Log(("%s vnetR3ControlRx: uCommand=%u fOn=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, fOn));
1649	switch (pCtlHdr->u8Command)
1650	{
1651	case VNET_CTRL_CMD_RX_MODE_PROMISC:
1652	pThis->fPromiscuous = !!fOn;
1653	break;
1654	case VNET_CTRL_CMD_RX_MODE_ALLMULTI:
1655	pThis->fAllMulti = !!fOn;
1656	break;
1657	default:
1658	u8Ack = VNET_ERROR;
1659	}
1660	if (fDrvWasPromisc != (pThis->fPromiscuous \| pThis->fAllMulti) && pThisCC->pDrv)
1661	pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv,
1662	(pThis->fPromiscuous \| pThis->fAllMulti));
1663
1664	return u8Ack;
1665	}
1666
1667	static uint8_t vnetR3ControlMac(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1668	{
1669	uint32_t nMacs = 0;
1670
1671	if ( pCtlHdr->u8Command != VNET_CTRL_CMD_MAC_TABLE_SET
1672	\|\| pElem->cOut != 3
1673	\|\| pElem->aSegsOut[1].cb < sizeof(nMacs)
1674	\|\| pElem->aSegsOut[2].cb < sizeof(nMacs))
1675	{
1676	Log(("%s vnetR3ControlMac: Segment layout is wrong (u8Command=%u nOut=%u cb1=%u cb2=%u)\n",
1677	INSTANCE(pThis), pCtlHdr->u8Command, pElem->cOut, pElem->aSegsOut[1].cb, pElem->aSegsOut[2].cb));
1678	return VNET_ERROR;
1679	}
1680
1681	/* Load unicast addresses */
1682	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &nMacs, sizeof(nMacs));
1683
1684	if (pElem->aSegsOut[1].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1685	{
1686	Log(("%s vnetR3ControlMac: The unicast mac segment is too small (nMacs=%u cb=%u)\n",
1687	INSTANCE(pThis), nMacs, pElem->aSegsOut[1].cb));
1688	return VNET_ERROR;
1689	}
1690
1691	if (nMacs > VNET_MAC_FILTER_LEN)
1692	{
1693	Log(("%s vnetR3ControlMac: MAC table is too big, have to use promiscuous mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1694	pThis->fPromiscuous = true;
1695	}
1696	else
1697	{
1698	if (nMacs)
1699	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr + sizeof(nMacs), pThis->aMacFilter, nMacs * sizeof(RTMAC));
1700	pThis->cMacFilterEntries = nMacs;
1701	#ifdef LOG_ENABLED
1702	Log(("%s vnetR3ControlMac: unicast macs:\n", INSTANCE(pThis)));
1703	for(unsigned i = 0; i < nMacs; i++)
1704	Log((" %RTmac\n", &pThis->aMacFilter[i]));
1705	#endif
1706	}
1707
1708	/* Load multicast addresses */
1709	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[2].addr, &nMacs, sizeof(nMacs));
1710
1711	if (pElem->aSegsOut[2].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1712	{
1713	Log(("%s vnetR3ControlMac: The multicast mac segment is too small (nMacs=%u cb=%u)\n",
1714	INSTANCE(pThis), nMacs, pElem->aSegsOut[2].cb));
1715	return VNET_ERROR;
1716	}
1717
1718	if (nMacs > VNET_MAC_FILTER_LEN - pThis->cMacFilterEntries)
1719	{
1720	Log(("%s vnetR3ControlMac: MAC table is too big, have to use allmulti mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1721	pThis->fAllMulti = true;
1722	}
1723	else
1724	{
1725	if (nMacs)
1726	PDMDevHlpPhysRead(pDevIns,
1727	pElem->aSegsOut[2].addr + sizeof(nMacs),
1728	&pThis->aMacFilter[pThis->cMacFilterEntries],
1729	nMacs * sizeof(RTMAC));
1730	#ifdef LOG_ENABLED
1731	Log(("%s vnetR3ControlMac: multicast macs:\n", INSTANCE(pThis)));
1732	for(unsigned i = 0; i < nMacs; i++)
1733	Log((" %RTmac\n",
1734	&pThis->aMacFilter[i+pThis->cMacFilterEntries]));
1735	#endif
1736	pThis->cMacFilterEntries += nMacs;
1737	}
1738
1739	return VNET_OK;
1740	}
1741
1742	static uint8_t vnetR3ControlVlan(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1743	{
1744	uint8_t u8Ack = VNET_OK;
1745	uint16_t u16Vid;
1746
1747	if (pElem->cOut != 2 \|\| pElem->aSegsOut[1].cb != sizeof(u16Vid))
1748	{
1749	Log(("%s vnetR3ControlVlan: Segment layout is wrong (u8Command=%u nOut=%u cb=%u)\n",
1750	INSTANCE(pThis), pCtlHdr->u8Command, pElem->cOut, pElem->aSegsOut[1].cb));
1751	return VNET_ERROR;
1752	}
1753
1754	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &u16Vid, sizeof(u16Vid));
1755
1756	if (u16Vid >= VNET_MAX_VID)
1757	{
1758	Log(("%s vnetR3ControlVlan: VLAN ID is out of range (VID=%u)\n", INSTANCE(pThis), u16Vid));
1759	return VNET_ERROR;
1760	}
1761
1762	Log(("%s vnetR3ControlVlan: uCommand=%u VID=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, u16Vid));
1763
1764	switch (pCtlHdr->u8Command)
1765	{
1766	case VNET_CTRL_CMD_VLAN_ADD:
1767	ASMBitSet(pThis->aVlanFilter, u16Vid);
1768	break;
1769	case VNET_CTRL_CMD_VLAN_DEL:
1770	ASMBitClear(pThis->aVlanFilter, u16Vid);
1771	break;
1772	default:
1773	u8Ack = VNET_ERROR;
1774	}
1775
1776	return u8Ack;
1777	}
1778
1779
1780	/**
1781	* @callback_method_impl{FNVPCIQUEUECALLBACK, The CLT queue}
1782	*/
1783	static DECLCALLBACK(void) vnetR3QueueControl(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1784	{
1785	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1786	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1787
1788	VQUEUEELEM elem;
1789	while (vqueueGet(pDevIns, &pThis->VPCI, pQueue, &elem))
1790	{
1791	if (elem.cOut < 1 \|\| elem.aSegsOut[0].cb < sizeof(VNETCTLHDR))
1792	{
1793	Log(("%s vnetR3QueueControl: The first 'out' segment is not the header! (%u < 1 \|\| %u < %u).\n",
1794	INSTANCE(pThis), elem.cOut, elem.aSegsOut[0].cb,sizeof(VNETCTLHDR)));
1795	break; /* Skip the element and hope the next one is good. */
1796	}
1797	if ( elem.cIn < 1
1798	\|\| elem.aSegsIn[elem.cIn - 1].cb < sizeof(VNETCTLACK))
1799	{
1800	Log(("%s vnetR3QueueControl: The last 'in' segment is too small to hold the acknowledge! (%u < 1 \|\| %u < %u).\n",
1801	INSTANCE(pThis), elem.cIn, elem.aSegsIn[elem.cIn - 1].cb, sizeof(VNETCTLACK)));
1802	break; /* Skip the element and hope the next one is good. */
1803	}
1804
1805	uint8_t bAck;
1806	VNETCTLHDR CtlHdr;
1807	PDMDevHlpPhysRead(pDevIns, elem.aSegsOut[0].addr, &CtlHdr, sizeof(CtlHdr));
1808	switch (CtlHdr.u8Class)
1809	{
1810	case VNET_CTRL_CLS_RX_MODE:
1811	bAck = vnetR3ControlRx(pDevIns, pThis, pThisCC, &CtlHdr, &elem);
1812	break;
1813	case VNET_CTRL_CLS_MAC:
1814	bAck = vnetR3ControlMac(pDevIns, pThis, &CtlHdr, &elem);
1815	break;
1816	case VNET_CTRL_CLS_VLAN:
1817	bAck = vnetR3ControlVlan(pDevIns, pThis, &CtlHdr, &elem);
1818	break;
1819	default:
1820	bAck = VNET_ERROR;
1821	}
1822	Log(("%s Processed control message %u, ack=%u.\n", INSTANCE(pThis), CtlHdr.u8Class, bAck));
1823	PDMDevHlpPCIPhysWrite(pDevIns, elem.aSegsIn[elem.cIn - 1].addr, &bAck, sizeof(bAck));
1824
1825	vqueuePut(pDevIns, &pThis->VPCI, pQueue, &elem, sizeof(bAck));
1826	vqueueSync(pDevIns, &pThis->VPCI, pQueue);
1827	}
1828	}
1829
1830	/* -=-=-=-=- Debug info item -=-=-=-=- */
1831
1832	/**
1833	* @callback_method_impl{FNDBGFINFOARGVDEV}
1834	*/
1835	static DECLCALLBACK(void) vnetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, int cArgs, char **papszArgs)
1836	{
1837	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1838	RT_NOREF(cArgs, papszArgs);
1839	vpciR3DumpStateWorker(&pThis->VPCI, pHlp);
1840	}
1841
1842
1843	/* -=-=-=-=- Saved state -=-=-=-=- */
1844
1845	/**
1846	* Saves the configuration.
1847	*
1848	* @param pDevIns The device instance.
1849	* @param pThis The VNET state.
1850	* @param pSSM The handle to the saved state.
1851	*/
1852	static void vnetR3SaveConfig(PPDMDEVINS pDevIns, PVNETSTATE pThis, PSSMHANDLE pSSM)
1853	{
1854	pDevIns->pHlpR3->pfnSSMPutMem(pSSM, &pThis->macConfigured, sizeof(pThis->macConfigured));
1855	}
1856
1857
1858	/**
1859	* @callback_method_impl{FNSSMDEVLIVEEXEC}
1860	*/
1861	static DECLCALLBACK(int) vnetR3LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
1862	{
1863	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1864	RT_NOREF(uPass);
1865	vnetR3SaveConfig(pDevIns, pThis, pSSM);
1866	return VINF_SSM_DONT_CALL_AGAIN;
1867	}
1868
1869
1870	/**
1871	* @callback_method_impl{FNSSMDEVSAVEPREP}
1872	*/
1873	static DECLCALLBACK(int) vnetR3SavePrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1874	{
1875	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1876	RT_NOREF(pSSM);
1877
1878	int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1879	if (RT_SUCCESS(rc))
1880	vnetCsRxLeave(pThis);
1881	return rc;
1882	}
1883
1884
1885	/**
1886	* @callback_method_impl{FNSSMDEVSAVEEXEC}
1887	*/
1888	static DECLCALLBACK(int) vnetR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1889	{
1890	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1891	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1892
1893	/* Save config first */
1894	vnetR3SaveConfig(pDevIns, pThis, pSSM);
1895
1896	/* Save the common part */
1897	int rc = vpciR3SaveExec(pHlp, &pThis->VPCI, pSSM);
1898	AssertRCReturn(rc, rc);
1899
1900	/* Save device-specific part */
1901	pHlp->pfnSSMPutMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac));
1902	pHlp->pfnSSMPutBool( pSSM, pThis->fPromiscuous);
1903	pHlp->pfnSSMPutBool( pSSM, pThis->fAllMulti);
1904	pHlp->pfnSSMPutU32( pSSM, pThis->cMacFilterEntries);
1905	pHlp->pfnSSMPutMem( pSSM, pThis->aMacFilter, pThis->cMacFilterEntries * sizeof(RTMAC));
1906	rc = pHlp->pfnSSMPutMem(pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter));
1907	AssertRCReturn(rc, rc);
1908
1909	Log(("%s State has been saved\n", INSTANCE(pThis)));
1910	return VINF_SUCCESS;
1911	}
1912
1913
1914	/**
1915	* @callback_method_impl{FNSSMDEVLOADPREP,
1916	* Serializes the receive thread - it may be working inside the critsect. }
1917	*/
1918	static DECLCALLBACK(int) vnetR3LoadPrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1919	{
1920	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1921	RT_NOREF(pSSM);
1922
1923	int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1924	if (RT_SUCCESS(rc))
1925	vnetCsRxLeave(pThis);
1926	return rc;
1927	}
1928
1929
1930	/**
1931	* @callback_method_impl{FNSSMDEVLOADEXEC}
1932	*/
1933	static DECLCALLBACK(int) vnetR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1934	{
1935	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1936	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1937	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1938
1939	/* config checks */
1940	RTMAC macConfigured;
1941	int rc = pHlp->pfnSSMGetMem(pSSM, &macConfigured, sizeof(macConfigured));
1942	AssertRCReturn(rc, rc);
1943	if (memcmp(&macConfigured, &pThis->macConfigured, sizeof(macConfigured))
1944	&& (uPass == 0 \|\| !PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns)))
1945	LogRel(("%s: The mac address differs: config=%RTmac saved=%RTmac\n", INSTANCE(pThis), &pThis->macConfigured, &macConfigured));
1946
1947	rc = vpciR3LoadExec(pHlp, &pThis->VPCI, pSSM, uVersion, uPass, VNET_N_QUEUES);
1948	AssertRCReturn(rc, rc);
1949
1950	if (uPass == SSM_PASS_FINAL)
1951	{
1952	rc = pHlp->pfnSSMGetMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac));
1953	AssertRCReturn(rc, rc);
1954
1955	if (uVersion > VIRTIO_SAVEDSTATE_VERSION_3_1_BETA1)
1956	{
1957	pHlp->pfnSSMGetBool(pSSM, &pThis->fPromiscuous);
1958	pHlp->pfnSSMGetBool(pSSM, &pThis->fAllMulti);
1959	pHlp->pfnSSMGetU32(pSSM, &pThis->cMacFilterEntries);
1960	pHlp->pfnSSMGetMem(pSSM, pThis->aMacFilter, pThis->cMacFilterEntries * sizeof(RTMAC));
1961
1962	/* Clear the rest. */
1963	if (pThis->cMacFilterEntries < VNET_MAC_FILTER_LEN)
1964	memset(&pThis->aMacFilter[pThis->cMacFilterEntries],
1965	0,
1966	(VNET_MAC_FILTER_LEN - pThis->cMacFilterEntries) * sizeof(RTMAC));
1967	rc = pHlp->pfnSSMGetMem(pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter));
1968	AssertRCReturn(rc, rc);
1969	}
1970	else
1971	{
1972	pThis->fPromiscuous = true;
1973	pThis->fAllMulti = false;
1974	pThis->cMacFilterEntries = 0;
1975	memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC));
1976	memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter));
1977	if (pThisCC->pDrv)
1978	pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, true);
1979	}
1980	}
1981
1982	return rc;
1983	}
1984
1985
1986	/**
1987	* @callback_method_impl{FNSSMDEVLOADDONE, Link status adjustments after
1988	* loading.}
1989	*/
1990	static DECLCALLBACK(int) vnetR3LoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1991	{
1992	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1993	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1994	RT_NOREF(pSSM);
1995
1996	if (pThisCC->pDrv)
1997	pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, (pThis->fPromiscuous \| pThis->fAllMulti));
1998	/*
1999	* Indicate link down to the guest OS that all network connections have
2000	* been lost, unless we've been teleported here.
2001	*/
2002	if (!PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns))
2003	vnetR3TempLinkDown(pDevIns, pThis, pThisCC);
2004
2005	return VINF_SUCCESS;
2006	}
2007
2008
2009	/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
2010
2011	/**
2012	* @interface_method_impl{PDMDEVREGR3,pfnDetach}
2013	*/
2014	static DECLCALLBACK(void) vnetR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2015	{
2016	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2017	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2018	Log(("%s vnetR3Detach:\n", INSTANCE(pThis)));
2019	RT_NOREF(fFlags);
2020
2021	AssertLogRelReturnVoid(iLUN == 0);
2022
2023	int rc = vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY);
2024	if (RT_FAILURE(rc))
2025	{
2026	LogRel(("vnetR3Detach failed to enter critical section!\n"));
2027	return;
2028	}
2029
2030	vnetR3DestroyTxThreadAndEvent(pDevIns, pThis, pThisCC);
2031
2032	/*
2033	* Zero important members.
2034	*/
2035	pThisCC->pDrvBase = NULL;
2036	pThisCC->pDrv = NULL;
2037
2038	vnetR3CsLeave(pDevIns, pThis);
2039	}
2040
2041
2042	/**
2043	* @interface_method_impl{PDMDEVREGR3,pfnAttach}
2044	*/
2045	static DECLCALLBACK(int) vnetR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2046	{
2047	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2048	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2049	RT_NOREF(fFlags);
2050	LogFlow(("%s vnetR3Attach:\n", INSTANCE(pThis)));
2051
2052	AssertLogRelReturn(iLUN == 0, VERR_PDM_NO_SUCH_LUN);
2053
2054	int rc = vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY);
2055	if (RT_FAILURE(rc))
2056	{
2057	LogRel(("vnetR3Attach failed to enter critical section!\n"));
2058	return rc;
2059	}
2060
2061	/*
2062	* Attach the driver.
2063	*/
2064	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThisCC->VPCI.IBase, &pThisCC->pDrvBase, "Network Port");
2065	if (RT_SUCCESS(rc))
2066	{
2067	pThisCC->pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->pDrvBase, PDMINETWORKUP);
2068	AssertMsgStmt(pThisCC->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
2069	rc = VERR_PDM_MISSING_INTERFACE_BELOW);
2070
2071	vnetR3CreateTxThreadAndEvent(pDevIns, pThis, pThisCC);
2072	}
2073	else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
2074	\|\| rc == VERR_PDM_CFG_MISSING_DRIVER_NAME)
2075	{
2076	/* This should never happen because this function is not called
2077	* if there is no driver to attach! */
2078	Log(("%s No attached driver!\n", INSTANCE(pThis)));
2079	}
2080
2081	/*
2082	* Temporary set the link down if it was up so that the guest
2083	* will know that we have change the configuration of the
2084	* network card
2085	*/
2086	if (RT_SUCCESS(rc))
2087	vnetR3TempLinkDown(pDevIns, pThis, pThisCC);
2088
2089	vnetR3CsLeave(pDevIns, pThis);
2090	return rc;
2091	}
2092
2093
2094	/**
2095	* @interface_method_impl{PDMDEVREGR3,pfnSuspend}
2096	*/
2097	static DECLCALLBACK(void) vnetR3Suspend(PPDMDEVINS pDevIns)
2098	{
2099	/* Poke thread waiting for buffer space. */
2100	vnetWakeupReceive(pDevIns);
2101	}
2102
2103
2104	/**
2105	* @interface_method_impl{PDMDEVREGR3,pfnPowerOff}
2106	*/
2107	static DECLCALLBACK(void) vnetR3PowerOff(PPDMDEVINS pDevIns)
2108	{
2109	/* Poke thread waiting for buffer space. */
2110	vnetWakeupReceive(pDevIns);
2111	}
2112
2113
2114	/**
2115	* @interface_method_impl{PDMDEVREGR3,pfnDestruct}
2116	*/
2117	static DECLCALLBACK(int) vnetR3Destruct(PPDMDEVINS pDevIns)
2118	{
2119	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
2120	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2121
2122	# ifdef VNET_TX_DELAY
2123	LogRel(("TxTimer stats (avg/min/max): %7d usec %7d usec %7d usec\n", pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
2124	# endif
2125
2126	Log(("%s Destroying instance\n", INSTANCE(pThis)));
2127	if (pThis->hEventMoreRxDescAvail != NIL_SUPSEMEVENT)
2128	{
2129	PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hEventMoreRxDescAvail);
2130	PDMDevHlpSUPSemEventClose(pDevIns, pThis->hEventMoreRxDescAvail);
2131	pThis->hEventMoreRxDescAvail = NIL_SUPSEMEVENT;
2132	}
2133
2134	// if (PDMCritSectIsInitialized(&pThis->csRx))
2135	// PDMR3CritSectDelete(&pThis->csRx);
2136
2137	return vpciR3Term(pDevIns, &pThis->VPCI);
2138	}
2139
2140
2141	/**
2142	* @interface_method_impl{PDMDEVREGR3,pfnConstruct}
2143	*/
2144	static DECLCALLBACK(int) vnetR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2145	{
2146	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2147	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2148	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2149	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2150	int rc;
2151
2152	/*
2153	* Initialize the instance data suffiencently for the destructor not to blow up.
2154	*/
2155	RTStrPrintf(pThis->VPCI.szInstance, sizeof(pThis->VPCI.szInstance), "VNet%d", iInstance);
2156	pThisCC->pDevIns = pDevIns;
2157	pThis->hEventMoreRxDescAvail = NIL_SUPSEMEVENT;
2158	# ifndef VNET_TX_DELAY
2159	pThis->hTxEvent = NIL_SUPSEMEVENT;
2160	pThisCC->pTxThread = NULL;
2161	# endif
2162
2163	/* Initialize state structure */
2164	pThis->u32PktNo = 1;
2165
2166	/* Interfaces */
2167	pThisCC->INetworkDown.pfnWaitReceiveAvail = vnetR3NetworkDown_WaitReceiveAvail;
2168	pThisCC->INetworkDown.pfnReceive = vnetR3NetworkDown_Receive;
2169	pThisCC->INetworkDown.pfnReceiveGso = vnetR3NetworkDown_ReceiveGso;
2170	pThisCC->INetworkDown.pfnXmitPending = vnetR3NetworkDown_XmitPending;
2171
2172	pThisCC->INetworkConfig.pfnGetMac = vnetR3NetworkConfig_GetMac;
2173	pThisCC->INetworkConfig.pfnGetLinkState = vnetR3NetworkConfig_GetLinkState;
2174	pThisCC->INetworkConfig.pfnSetLinkState = vnetR3NetworkConfig_SetLinkState;
2175
2176
2177	/* Do our own locking. */
2178	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
2179	AssertRCReturn(rc, rc);
2180
2181	/*
2182	* Initialize VPCI part.
2183	*/
2184	pThisCC->VPCI.IBase.pfnQueryInterface = vnetQueryInterface;
2185
2186	rc = vpciR3Init(pDevIns, &pThis->VPCI, &pThisCC->VPCI, VIRTIO_NET_ID, VNET_PCI_CLASS, VNET_N_QUEUES);
2187	AssertRCReturn(rc, rc);
2188
2189	pThisCC->pRxQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 256, vnetR3QueueReceive, "RX ");
2190	pThisCC->pTxQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 256, vnetR3QueueTransmit, "TX ");
2191	pThisCC->pCtlQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 16, vnetR3QueueControl, "CTL");
2192	AssertLogRelReturn(pThisCC->pCtlQueue && pThisCC->pTxQueue && pThisCC->pRxQueue, VERR_INTERNAL_ERROR_5);
2193
2194	Log(("%s Constructing new instance\n", INSTANCE(pThis)));
2195
2196	/*
2197	* Validate configuration.
2198	*/
2199	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "MAC\|CableConnected\|LineSpeed\|LinkUpDelay\|StatNo", "");
2200
2201	/* Get config params */
2202	rc = pHlp->pfnCFGMQueryBytes(pCfg, "MAC", pThis->macConfigured.au8, sizeof(pThis->macConfigured));
2203	if (RT_FAILURE(rc))
2204	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get MAC address"));
2205
2206	rc = pHlp->pfnCFGMQueryBool(pCfg, "CableConnected", &pThis->fCableConnected);
2207	if (RT_FAILURE(rc))
2208	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the value of 'CableConnected'"));
2209
2210	rc = pHlp->pfnCFGMQueryU32Def(pCfg, "LinkUpDelay", &pThis->cMsLinkUpDelay, 5000); /* ms */
2211	if (RT_FAILURE(rc))
2212	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the value of 'LinkUpDelay'"));
2213	Assert(pThis->cMsLinkUpDelay <= 300000); /* less than 5 minutes */
2214	if (pThis->cMsLinkUpDelay > 5000 \|\| pThis->cMsLinkUpDelay < 100)
2215	LogRel(("%s WARNING! Link up delay is set to %u seconds!\n", INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2216	Log(("%s Link up delay is set to %u seconds\n", INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2217
2218	uint32_t uStatNo = iInstance;
2219	rc = pHlp->pfnCFGMQueryU32Def(pCfg, "StatNo", &uStatNo, iInstance);
2220	if (RT_FAILURE(rc))
2221	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the \"StatNo\" value"));
2222
2223	vnetPrintFeatures(pThis, vnetIoCb_GetHostFeatures(&pThis->VPCI), "Device supports the following features");
2224
2225	/* Initialize PCI config space */
2226	memcpy(pThis->config.mac.au8, pThis->macConfigured.au8, sizeof(pThis->config.mac.au8));
2227	pThis->config.uStatus = 0;
2228
2229	/* Initialize critical section. */
2230	// char szTmp[sizeof(pThis->VPCI.szInstance) + 2];
2231	// RTStrPrintf(szTmp, sizeof(szTmp), "%sRX", pThis->VPCI.szInstance);
2232	// rc = PDMDevHlpCritSectInit(pDevIns, &pThis->csRx, szTmp);
2233	// if (RT_FAILURE(rc))
2234	// return rc;
2235
2236	/* Map our ports to IO space. */
2237	rc = PDMDevHlpPCIIORegionCreateIo(pDevIns, 0 /iPciReion/, VPCI_CONFIG + sizeof(VNetPCIConfig),
2238	vnetIOPortOut, vnetIOPortIn, NULL /pvUser/, "VirtioNet", NULL /paExtDescs/,
2239	&pThis->hIoPorts);
2240	AssertRCReturn(rc, rc);
2241
2242	/* Register save/restore state handlers. */
2243	rc = PDMDevHlpSSMRegisterEx(pDevIns, VIRTIO_SAVEDSTATE_VERSION, sizeof(VNETSTATE), NULL,
2244	NULL, vnetR3LiveExec, NULL,
2245	vnetR3SavePrep, vnetR3SaveExec, NULL,
2246	vnetR3LoadPrep, vnetR3LoadExec, vnetR3LoadDone);
2247	AssertRCReturn(rc, rc);
2248
2249	/* Create Link Up Timer */
2250	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetR3LinkUpTimer, NULL, TMTIMER_FLAGS_NO_CRIT_SECT,
2251	"VirtioNet Link Up Timer", &pThisCC->hLinkUpTimer);
2252	AssertRCReturn(rc, rc);
2253
2254	# ifdef VNET_TX_DELAY
2255	/* Create Transmit Delay Timer */
2256	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetR3TxTimer, pThis, TMTIMER_FLAGS_NO_CRIT_SECT,
2257	"VirtioNet TX Delay Timer", &pThis->hTxTimer);
2258	AssertRCReturn(rc, rc);
2259
2260	pThis->u32i = pThis->u32AvgDiff = pThis->u32MaxDiff = 0;
2261	pThis->u32MinDiff = UINT32_MAX;
2262	# endif /* VNET_TX_DELAY */
2263
2264	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThisCC->VPCI.IBase, &pThisCC->pDrvBase, "Network Port");
2265	if (RT_SUCCESS(rc))
2266	{
2267	pThisCC->pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->pDrvBase, PDMINETWORKUP);
2268	AssertMsgReturn(pThisCC->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
2269	VERR_PDM_MISSING_INTERFACE_BELOW);
2270
2271	vnetR3CreateTxThreadAndEvent(pDevIns, pThis, pThisCC);
2272	}
2273	else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
2274	\|\| rc == VERR_PDM_CFG_MISSING_DRIVER_NAME )
2275	{
2276	/* No error! */
2277	Log(("%s This adapter is not attached to any network!\n", INSTANCE(pThis)));
2278	}
2279	else
2280	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to attach the network LUN"));
2281
2282	rc = PDMDevHlpSUPSemEventCreate(pDevIns, &pThis->hEventMoreRxDescAvail);
2283	AssertRCReturn(rc, rc);
2284
2285	ASMCompilerBarrier(); /* paranoia */
2286	rc = vnetIoCb_Reset(pDevIns);
2287	AssertRCReturn(rc, rc);
2288
2289	/*
2290	* Statistics and debug stuff.
2291	* The /Public/ bits are official and used by session info in the GUI.
2292	*/
2293	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES,
2294	"Amount of data received", "/Public/NetAdapter/%u/BytesReceived", uStatNo);
2295	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES,
2296	"Amount of data transmitted", "/Public/NetAdapter/%u/BytesTransmitted", uStatNo);
2297	PDMDevHlpSTAMRegisterF(pDevIns, &pDevIns->iInstance, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE,
2298	"Device instance number", "/Public/NetAdapter/%u/%s", uStatNo, pDevIns->pReg->szName);
2299
2300	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, "ReceiveBytes", STAMUNIT_BYTES, "Amount of data received");
2301	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, "TransmitBytes", STAMUNIT_BYTES, "Amount of data transmitted");
2302	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveGSO, STAMTYPE_COUNTER, "Packets/ReceiveGSO", STAMUNIT_COUNT, "Number of received GSO packets");
2303	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitPackets, STAMTYPE_COUNTER, "Packets/Transmit", STAMUNIT_COUNT, "Number of sent packets");
2304	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitGSO, STAMTYPE_COUNTER, "Packets/Transmit-Gso", STAMUNIT_COUNT, "Number of sent GSO packets");
2305	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitCSum, STAMTYPE_COUNTER, "Packets/Transmit-Csum", STAMUNIT_COUNT, "Number of completed TX checksums");
2306	# ifdef VBOX_WITH_STATISTICS
2307	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceive, STAMTYPE_PROFILE, "Receive/Total", STAMUNIT_TICKS_PER_CALL, "Profiling receive");
2308	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveStore, STAMTYPE_PROFILE, "Receive/Store", STAMUNIT_TICKS_PER_CALL, "Profiling receive storing");
2309	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRxOverflow, STAMTYPE_PROFILE, "RxOverflow", STAMUNIT_TICKS_PER_OCCURENCE, "Profiling RX overflows");
2310	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRxOverflowWakeup, STAMTYPE_COUNTER, "RxOverflowWakeup", STAMUNIT_OCCURENCES, "Nr of RX overflow wakeups");
2311	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmit, STAMTYPE_PROFILE, "Transmit/Total", STAMUNIT_TICKS_PER_CALL, "Profiling transmits in HC");
2312	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitSend, STAMTYPE_PROFILE, "Transmit/Send", STAMUNIT_TICKS_PER_CALL, "Profiling send transmit in HC");
2313	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitByNetwork, STAMTYPE_COUNTER, "Transmit/ByNetwork", STAMUNIT_COUNT, "Network-initiated transmissions");
2314	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitByThread, STAMTYPE_COUNTER, "Transmit/ByThread", STAMUNIT_COUNT, "Thread-initiated transmissions");
2315	# endif
2316
2317	char szInfo[16];
2318	RTStrPrintf(szInfo, sizeof(szInfo), pDevIns->iInstance ? "vionet%u" : "vionet", pDevIns->iInstance);
2319	PDMDevHlpDBGFInfoRegisterArgv(pDevIns, szInfo, "virtio-net info", vnetR3Info);
2320
2321	return VINF_SUCCESS;
2322	}
2323
2324	#else /* !IN_RING3 */
2325
2326	/**
2327	* @callback_method_impl{PDMDEVREGR0,pfnConstruct}
2328	*/
2329	static DECLCALLBACK(int) vnetRZConstruct(PPDMDEVINS pDevIns)
2330	{
2331	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2332	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2333	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2334
2335	int rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
2336	AssertRCReturn(rc, rc);
2337
2338	rc = PDMDevHlpIoPortSetUpContext(pDevIns, pThis->hIoPorts, vnetIOPortOut, vnetIOPortIn, NULL /pvUser/);
2339	AssertRCReturn(rc, rc);
2340
2341	return vpciRZInit(pDevIns, &pThis->VPCI, &pThisCC->VPCI);
2342	}
2343
2344	#endif /* !IN_RING3 */
2345
2346	/**
2347	* The device registration structure.
2348	*/
2349	const PDMDEVREG g_DeviceVirtioNet =
2350	{
2351	/* .u32version = */ PDM_DEVREG_VERSION,
2352	/* .uReserved0 = */ 0,
2353	/* .szName = */ "virtio-net",
2354	/* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RZ \| PDM_DEVREG_FLAGS_NEW_STYLE,
2355	/* .fClass = */ PDM_DEVREG_CLASS_NETWORK,
2356	/* .cMaxInstances = */ ~0U,
2357	/* .uSharedVersion = */ 42,
2358	/* .cbInstanceShared = */ sizeof(VNETSTATE),
2359	/* .cbInstanceCC = */ sizeof(VNETSTATECC),
2360	/* .cbInstanceRC = */ sizeof(VNETSTATERC),
2361	/* .cMaxPciDevices = */ 1,
2362	/* .cMaxMsixVectors = */ 0,
2363	/* .pszDescription = */ "Virtio Ethernet.\n",
2364	#if defined(IN_RING3)
2365	/* .pszRCMod = */ "VBoxDDRC.rc",
2366	/* .pszR0Mod = */ "VBoxDDR0.r0",
2367	/* .pfnConstruct = */ vnetR3Construct,
2368	/* .pfnDestruct = */ vnetR3Destruct,
2369	/* .pfnRelocate = */ NULL,
2370	/* .pfnMemSetup = */ NULL,
2371	/* .pfnPowerOn = */ NULL,
2372	/* .pfnReset = */ NULL,
2373	/* .pfnSuspend = */ vnetR3Suspend,
2374	/* .pfnResume = */ NULL,
2375	/* .pfnAttach = */ vnetR3Attach,
2376	/* .pfnDetach = */ vnetR3Detach,
2377	/* .pfnQueryInterface = */ NULL,
2378	/* .pfnInitComplete = */ NULL,
2379	/* .pfnPowerOff = */ vnetR3PowerOff,
2380	/* .pfnSoftReset = */ NULL,
2381	/* .pfnReserved0 = */ NULL,
2382	/* .pfnReserved1 = */ NULL,
2383	/* .pfnReserved2 = */ NULL,
2384	/* .pfnReserved3 = */ NULL,
2385	/* .pfnReserved4 = */ NULL,
2386	/* .pfnReserved5 = */ NULL,
2387	/* .pfnReserved6 = */ NULL,
2388	/* .pfnReserved7 = */ NULL,
2389	#elif defined(IN_RING0)
2390	/* .pfnEarlyConstruct = */ NULL,
2391	/* .pfnConstruct = */ vnetRZConstruct,
2392	/* .pfnDestruct = */ NULL,
2393	/* .pfnFinalDestruct = */ NULL,
2394	/* .pfnRequest = */ NULL,
2395	/* .pfnReserved0 = */ NULL,
2396	/* .pfnReserved1 = */ NULL,
2397	/* .pfnReserved2 = */ NULL,
2398	/* .pfnReserved3 = */ NULL,
2399	/* .pfnReserved4 = */ NULL,
2400	/* .pfnReserved5 = */ NULL,
2401	/* .pfnReserved6 = */ NULL,
2402	/* .pfnReserved7 = */ NULL,
2403	#elif defined(IN_RC)
2404	/* .pfnConstruct = */ vnetRZConstruct,
2405	/* .pfnReserved0 = */ NULL,
2406	/* .pfnReserved1 = */ NULL,
2407	/* .pfnReserved2 = */ NULL,
2408	/* .pfnReserved3 = */ NULL,
2409	/* .pfnReserved4 = */ NULL,
2410	/* .pfnReserved5 = */ NULL,
2411	/* .pfnReserved6 = */ NULL,
2412	/* .pfnReserved7 = */ NULL,
2413	#else
2414	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
2415	#endif
2416	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
2417	};
2418
2419	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */

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source: vbox/trunk/src/VBox/Devices/Network/DevVirtioNet.cpp@ 85179

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