DevVirtioNet.cpp@ 82254

Last change on this file since 82254 was 82129, checked in by vboxsync, 5 years ago
Devices/Network: Don't decorate the public stats with device, just use the main adapter number. Moved to different sub-folder to avoid confusion.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 86.1 KB

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1	/* $Id: DevVirtioNet.cpp 82129 2019-11-23 17:28:03Z vboxsync $ */
2	/** @file
3	* DevVirtioNet - Virtio Network Device
4	*/
5
6	/*
7	* Copyright (C) 2009-2019 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	STAM_REL_COUNTER_INC(&pThis->StatReceiveGSO);
909	}
910	else
911	{
912	Hdr.Hdr.u8Flags = 0;
913	Hdr.Hdr.u8GSOType = VNETHDR_GSO_NONE;
914	}
915
916	if (vnetR3MergeableRxBuffers(pThis))
917	cbHdr = sizeof(VNETHDRMRX);
918	else
919	cbHdr = sizeof(VNETHDR);
920
921	vnetR3PacketDump(pThis, (const uint8_t *)pvBuf, cb, "<-- Incoming");
922
923	unsigned int uOffset = 0;
924	unsigned int nElem;
925	for (nElem = 0; uOffset < cb; nElem++)
926	{
927	VQUEUEELEM elem;
928	unsigned int nSeg = 0, uElemSize = 0, cbReserved = 0;
929
930	if (!vqueueGet(pDevIns, &pThis->VPCI, pThisCC->pRxQueue, &elem))
931	{
932	/*
933	* @todo: It is possible to run out of RX buffers if only a few
934	* were added and we received a big packet.
935	*/
936	Log(("%s vnetR3HandleRxPacket: Suddenly there is no space in receive queue!\n", INSTANCE(pThis)));
937	return VERR_INTERNAL_ERROR;
938	}
939
940	if (elem.cIn < 1)
941	{
942	Log(("%s vnetR3HandleRxPacket: No writable descriptors in receive queue!\n", INSTANCE(pThis)));
943	return VERR_INTERNAL_ERROR;
944	}
945
946	if (nElem == 0)
947	{
948	if (vnetR3MergeableRxBuffers(pThis))
949	{
950	addrHdrMrx = elem.aSegsIn[nSeg].addr;
951	cbReserved = cbHdr;
952	}
953	else
954	{
955	/* The very first segment of the very first element gets the header. */
956	if (elem.aSegsIn[nSeg].cb != sizeof(VNETHDR))
957	{
958	Log(("%s vnetR3HandleRxPacket: The first descriptor does match the header size!\n", INSTANCE(pThis)));
959	return VERR_INTERNAL_ERROR;
960	}
961	elem.aSegsIn[nSeg++].pv = &Hdr;
962	}
963	uElemSize += cbHdr;
964	}
965	while (nSeg < elem.cIn && uOffset < cb)
966	{
967	unsigned int uSize = (unsigned int)RT_MIN(elem.aSegsIn[nSeg].cb - (nSeg?0:cbReserved),
968	cb - uOffset);
969	elem.aSegsIn[nSeg++].pv = (uint8_t*)pvBuf + uOffset;
970	uOffset += uSize;
971	uElemSize += uSize;
972	}
973	STAM_PROFILE_START(&pThis->StatReceiveStore, a);
974	vqueuePut(pDevIns, &pThis->VPCI, pThisCC->pRxQueue, &elem, uElemSize, cbReserved);
975	STAM_PROFILE_STOP(&pThis->StatReceiveStore, a);
976	if (!vnetR3MergeableRxBuffers(pThis))
977	break;
978	cbReserved = 0;
979	}
980	if (vnetR3MergeableRxBuffers(pThis))
981	{
982	Hdr.u16NumBufs = nElem;
983	int rc = PDMDevHlpPCIPhysWrite(pDevIns, addrHdrMrx,
984	&Hdr, sizeof(Hdr));
985	if (RT_FAILURE(rc))
986	{
987	Log(("%s vnetR3HandleRxPacket: Failed to write merged RX buf header: %Rrc\n", INSTANCE(pThis), rc));
988	return rc;
989	}
990	}
991	vqueueSync(pDevIns, &pThis->VPCI, pThisCC->pRxQueue);
992	if (uOffset < cb)
993	{
994	Log(("%s vnetR3HandleRxPacket: Packet did not fit into RX queue (packet size=%u)!\n", INSTANCE(pThis), cb));
995	return VERR_TOO_MUCH_DATA;
996	}
997
998	return VINF_SUCCESS;
999	}
1000
1001	/**
1002	* @interface_method_impl{PDMINETWORKDOWN,pfnReceiveGso}
1003	*/
1004	static DECLCALLBACK(int) vnetR3NetworkDown_ReceiveGso(PPDMINETWORKDOWN pInterface, const void *pvBuf,
1005	size_t cb, PCPDMNETWORKGSO pGso)
1006	{
1007	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown);
1008	PPDMDEVINS pDevIns = pThisCC->pDevIns;
1009	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1010
1011	if (pGso)
1012	{
1013	uint32_t uFeatures = pThis->VPCI.uGuestFeatures;
1014
1015	switch (pGso->u8Type)
1016	{
1017	case PDMNETWORKGSOTYPE_IPV4_TCP:
1018	uFeatures &= VNET_F_GUEST_TSO4;
1019	break;
1020	case PDMNETWORKGSOTYPE_IPV6_TCP:
1021	uFeatures &= VNET_F_GUEST_TSO6;
1022	break;
1023	case PDMNETWORKGSOTYPE_IPV4_UDP:
1024	case PDMNETWORKGSOTYPE_IPV6_UDP:
1025	uFeatures &= VNET_F_GUEST_UFO;
1026	break;
1027	default:
1028	uFeatures = 0;
1029	break;
1030	}
1031	if (!uFeatures)
1032	{
1033	Log2(("%s vnetR3NetworkDown_ReceiveGso: GSO type (0x%x) not supported\n", INSTANCE(pThis), pGso->u8Type));
1034	return VERR_NOT_SUPPORTED;
1035	}
1036	}
1037
1038	Log2(("%s vnetR3NetworkDown_ReceiveGso: pvBuf=%p cb=%u pGso=%p\n", INSTANCE(pThis), pvBuf, cb, pGso));
1039	int rc = vnetR3CanReceive(pDevIns, pThis, pThisCC);
1040	if (RT_FAILURE(rc))
1041	return rc;
1042
1043	/* Drop packets if VM is not running or cable is disconnected. */
1044	VMSTATE enmVMState = PDMDevHlpVMState(pDevIns);
1045	if (( enmVMState != VMSTATE_RUNNING
1046	&& enmVMState != VMSTATE_RUNNING_LS)
1047	\|\| !(pThis->config.uStatus & VNET_S_LINK_UP))
1048	return VINF_SUCCESS;
1049
1050	STAM_PROFILE_START(&pThis->StatReceive, a);
1051	vpciR3SetReadLed(&pThis->VPCI, true);
1052	if (vnetR3AddressFilter(pThis, pvBuf, cb))
1053	{
1054	rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1055	if (RT_SUCCESS(rc))
1056	{
1057	rc = vnetR3HandleRxPacket(pDevIns, pThis, pThisCC, pvBuf, cb, pGso);
1058	STAM_REL_COUNTER_ADD(&pThis->StatReceiveBytes, cb);
1059	vnetCsRxLeave(pThis);
1060	}
1061	}
1062	vpciR3SetReadLed(&pThis->VPCI, false);
1063	STAM_PROFILE_STOP(&pThis->StatReceive, a);
1064	return rc;
1065	}
1066
1067	/**
1068	* @interface_method_impl{PDMINETWORKDOWN,pfnReceive}
1069	*/
1070	static DECLCALLBACK(int) vnetR3NetworkDown_Receive(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb)
1071	{
1072	return vnetR3NetworkDown_ReceiveGso(pInterface, pvBuf, cb, NULL);
1073	}
1074
1075	/**
1076	* @interface_method_impl{PDMINETWORKCONFIG,pfnGetMac}
1077	*/
1078	static DECLCALLBACK(int) vnetR3NetworkConfig_GetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac)
1079	{
1080	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig);
1081	PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE);
1082	memcpy(pMac, pThis->config.mac.au8, sizeof(RTMAC));
1083	return VINF_SUCCESS;
1084	}
1085
1086	/**
1087	* @interface_method_impl{PDMINETWORKCONFIG,pfnGetLinkState}
1088	*/
1089	static DECLCALLBACK(PDMNETWORKLINKSTATE) vnetR3NetworkConfig_GetLinkState(PPDMINETWORKCONFIG pInterface)
1090	{
1091	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig);
1092	PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE);
1093	if (pThis->config.uStatus & VNET_S_LINK_UP)
1094	return PDMNETWORKLINKSTATE_UP;
1095	return PDMNETWORKLINKSTATE_DOWN;
1096	}
1097
1098	/**
1099	* @interface_method_impl{PDMINETWORKCONFIG,pfnSetLinkState}
1100	*/
1101	static DECLCALLBACK(int) vnetR3NetworkConfig_SetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState)
1102	{
1103	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig);
1104	PPDMDEVINS pDevIns = pThisCC->pDevIns;
1105	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1106	bool fOldUp = !!(pThis->config.uStatus & VNET_S_LINK_UP);
1107	bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP;
1108
1109	Log(("%s vnetR3NetworkConfig_SetLinkState: enmState=%d\n", INSTANCE(pThis), enmState));
1110	if (enmState == PDMNETWORKLINKSTATE_DOWN_RESUME)
1111	{
1112	if (fOldUp)
1113	{
1114	/*
1115	* We bother to bring the link down only if it was up previously. The UP link state
1116	* notification will be sent when the link actually goes up in vnetR3LinkUpTimer().
1117	*/
1118	vnetR3TempLinkDown(pDevIns, pThis, pThisCC);
1119	if (pThisCC->pDrv)
1120	pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, enmState);
1121	}
1122	}
1123	else if (fNewUp != fOldUp)
1124	{
1125	if (fNewUp)
1126	{
1127	Log(("%s Link is up\n", INSTANCE(pThis)));
1128	pThis->fCableConnected = true;
1129	pThis->config.uStatus \|= VNET_S_LINK_UP;
1130	vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
1131	}
1132	else
1133	{
1134	/* The link was brought down explicitly, make sure it won't come up by timer. */
1135	PDMDevHlpTimerStop(pDevIns, pThisCC->hLinkUpTimer);
1136	Log(("%s Link is down\n", INSTANCE(pThis)));
1137	pThis->fCableConnected = false;
1138	pThis->config.uStatus &= ~VNET_S_LINK_UP;
1139	vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG);
1140	}
1141	if (pThisCC->pDrv)
1142	pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, enmState);
1143	}
1144	return VINF_SUCCESS;
1145	}
1146
1147	/**
1148	* @callback_method_impl{FNVPCIQUEUECALLBACK, The RX queue}
1149	*/
1150	static DECLCALLBACK(void) vnetR3QueueReceive(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1151	{
1152	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1153	RT_NOREF(pThis, pQueue);
1154	Log(("%s Receive buffers has been added, waking up receive thread.\n", INSTANCE(pThis)));
1155	vnetWakeupReceive(pDevIns);
1156	}
1157
1158	/**
1159	* Sets up the GSO context according to the Virtio header.
1160	*
1161	* @param pGso The GSO context to setup.
1162	* @param pCtx The context descriptor.
1163	*/
1164	DECLINLINE(PPDMNETWORKGSO) vnetR3SetupGsoCtx(PPDMNETWORKGSO pGso, VNETHDR const *pHdr)
1165	{
1166	pGso->u8Type = PDMNETWORKGSOTYPE_INVALID;
1167
1168	if (pHdr->u8GSOType & VNETHDR_GSO_ECN)
1169	{
1170	AssertMsgFailed(("Unsupported flag in virtio header: ECN\n"));
1171	return NULL;
1172	}
1173	switch (pHdr->u8GSOType & ~VNETHDR_GSO_ECN)
1174	{
1175	case VNETHDR_GSO_TCPV4:
1176	pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_TCP;
1177	pGso->cbHdrsSeg = pHdr->u16HdrLen;
1178	break;
1179	case VNETHDR_GSO_TCPV6:
1180	pGso->u8Type = PDMNETWORKGSOTYPE_IPV6_TCP;
1181	pGso->cbHdrsSeg = pHdr->u16HdrLen;
1182	break;
1183	case VNETHDR_GSO_UDP:
1184	pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_UDP;
1185	pGso->cbHdrsSeg = pHdr->u16CSumStart;
1186	break;
1187	default:
1188	return NULL;
1189	}
1190	if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1191	pGso->offHdr2 = pHdr->u16CSumStart;
1192	else
1193	{
1194	AssertMsgFailed(("GSO without checksum offloading!\n"));
1195	return NULL;
1196	}
1197	pGso->offHdr1 = sizeof(RTNETETHERHDR);
1198	pGso->cbHdrsTotal = pHdr->u16HdrLen;
1199	pGso->cbMaxSeg = pHdr->u16GSOSize;
1200	return pGso;
1201	}
1202
1203	DECLINLINE(uint16_t) vnetR3CSum16(const void *pvBuf, size_t cb)
1204	{
1205	uint32_t csum = 0;
1206	uint16_t pu16 = (uint16_t )pvBuf;
1207
1208	while (cb > 1)
1209	{
1210	csum += *pu16++;
1211	cb -= 2;
1212	}
1213	if (cb)
1214	csum += (uint8_t)pu16;
1215	while (csum >> 16)
1216	csum = (csum >> 16) + (csum & 0xFFFF);
1217	return ~csum;
1218	}
1219
1220	DECLINLINE(void) vnetR3CompleteChecksum(uint8_t *pBuf, size_t cbSize, uint16_t uStart, uint16_t uOffset)
1221	{
1222	AssertReturnVoid(uStart < cbSize);
1223	AssertReturnVoid(uStart + uOffset + sizeof(uint16_t) <= cbSize);
1224	(uint16_t )(pBuf + uStart + uOffset) = vnetR3CSum16(pBuf + uStart, cbSize - uStart);
1225	}
1226
1227	static bool vnetR3ReadHeader(PPDMDEVINS pDevIns, RTGCPHYS GCPhys, PVNETHDR pHdr, uint32_t cbMax)
1228	{
1229	int rc = PDMDevHlpPhysRead(pDevIns, GCPhys, pHdr, sizeof(pHdr)); /* @todo r=bird: Why not PDMDevHlpPCIPhysRead? */
1230	if (RT_FAILURE(rc))
1231	return false;
1232
1233	Log4(("virtio-net: header flags=%x gso-type=%x len=%x gso-size=%x csum-start=%x csum-offset=%x cb=%x\n",
1234	pHdr->u8Flags, pHdr->u8GSOType, pHdr->u16HdrLen, pHdr->u16GSOSize, pHdr->u16CSumStart, pHdr->u16CSumOffset, cbMax));
1235
1236	if (pHdr->u8GSOType)
1237	{
1238	uint32_t u32MinHdrSize;
1239
1240	/* Segmentation offloading cannot be done without checksumming. */
1241	if (RT_UNLIKELY(!(pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)))
1242	return false;
1243	/* We do not support ECN. */
1244	if (RT_UNLIKELY(pHdr->u8GSOType & VNETHDR_GSO_ECN))
1245	return false;
1246	switch (pHdr->u8GSOType)
1247	{
1248	case VNETHDR_GSO_TCPV4:
1249	case VNETHDR_GSO_TCPV6:
1250	u32MinHdrSize = sizeof(RTNETTCP);
1251	break;
1252	case VNETHDR_GSO_UDP:
1253	u32MinHdrSize = 0;
1254	break;
1255	default:
1256	return false;
1257	}
1258	/* Header+MSS must not exceed the packet size. */
1259	if (RT_UNLIKELY(u32MinHdrSize + pHdr->u16CSumStart + pHdr->u16GSOSize > cbMax))
1260	return false;
1261	}
1262	/* Checksum must fit into the frame (validating both checksum fields). */
1263	if ( (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1264	&& sizeof(uint16_t) + pHdr->u16CSumStart + pHdr->u16CSumOffset > cbMax)
1265	return false;
1266	Log4(("virtio-net: return true\n"));
1267	return true;
1268	}
1269
1270	static int vnetR3TransmitFrame(PVNETSTATE pThis, PVNETSTATECC pThisCC, PPDMSCATTERGATHER pSgBuf,
1271	PPDMNETWORKGSO pGso, PVNETHDR pHdr)
1272	{
1273	vnetR3PacketDump(pThis, (uint8_t *)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, "--> Outgoing");
1274	if (pGso)
1275	{
1276	/* Some guests (RHEL) may report HdrLen excluding transport layer header! */
1277	/*
1278	* We cannot use cdHdrs provided by the guest because of different ways
1279	* it gets filled out by different versions of kernels.
1280	*/
1281	//if (pGso->cbHdrs < pHdr->u16CSumStart + pHdr->u16CSumOffset + 2)
1282	{
1283	Log4(("%s vnetR3TransmitPendingPackets: HdrLen before adjustment %d.\n",
1284	INSTANCE(pThis), pGso->cbHdrsTotal));
1285	switch (pGso->u8Type)
1286	{
1287	case PDMNETWORKGSOTYPE_IPV4_TCP:
1288	case PDMNETWORKGSOTYPE_IPV6_TCP:
1289	pGso->cbHdrsTotal = pHdr->u16CSumStart +
1290	((PRTNETTCP)(((uint8_t)pSgBuf->aSegs[0].pvSeg) + pHdr->u16CSumStart))->th_off 4;
1291	pGso->cbHdrsSeg = pGso->cbHdrsTotal;
1292	break;
1293	case PDMNETWORKGSOTYPE_IPV4_UDP:
1294	pGso->cbHdrsTotal = (uint8_t)(pHdr->u16CSumStart + sizeof(RTNETUDP));
1295	pGso->cbHdrsSeg = pHdr->u16CSumStart;
1296	break;
1297	}
1298	/* Update GSO structure embedded into the frame */
1299	((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsTotal = pGso->cbHdrsTotal;
1300	((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsSeg = pGso->cbHdrsSeg;
1301	Log4(("%s vnetR3TransmitPendingPackets: adjusted HdrLen to %d.\n",
1302	INSTANCE(pThis), pGso->cbHdrsTotal));
1303	}
1304	Log2(("%s vnetR3TransmitPendingPackets: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n",
1305	INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2));
1306	STAM_REL_COUNTER_INC(&pThis->StatTransmitGSO);
1307	}
1308	else if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM)
1309	{
1310	STAM_REL_COUNTER_INC(&pThis->StatTransmitCSum);
1311	/*
1312	* This is not GSO frame but checksum offloading is requested.
1313	*/
1314	vnetR3CompleteChecksum((uint8_t*)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed,
1315	pHdr->u16CSumStart, pHdr->u16CSumOffset);
1316	}
1317
1318	return pThisCC->pDrv->pfnSendBuf(pThisCC->pDrv, pSgBuf, false);
1319	}
1320
1321	static void vnetR3TransmitPendingPackets(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC,
1322	PVQUEUE pQueue, bool fOnWorkerThread)
1323	{
1324	/*
1325	* Only one thread is allowed to transmit at a time, others should skip
1326	* transmission as the packets will be picked up by the transmitting
1327	* thread.
1328	*/
1329	if (!ASMAtomicCmpXchgU32(&pThis->uIsTransmitting, 1, 0))
1330	return;
1331
1332	if ((pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK) == 0)
1333	{
1334	Log(("%s Ignoring transmit requests from non-existent driver (status=0x%x).\n", INSTANCE(pThis), pThis->VPCI.uStatus));
1335	return;
1336	}
1337
1338	if (!pThis->fCableConnected)
1339	{
1340	Log(("%s Ignoring transmit requests while cable is disconnected.\n", INSTANCE(pThis)));
1341	return;
1342	}
1343
1344	PPDMINETWORKUP pDrv = pThisCC->pDrv;
1345	if (pDrv)
1346	{
1347	int rc = pDrv->pfnBeginXmit(pDrv, fOnWorkerThread);
1348	Assert(rc == VINF_SUCCESS \|\| rc == VERR_TRY_AGAIN);
1349	if (rc == VERR_TRY_AGAIN)
1350	{
1351	ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1352	return;
1353	}
1354	}
1355
1356	unsigned int cbHdr;
1357	if (vnetR3MergeableRxBuffers(pThis))
1358	cbHdr = sizeof(VNETHDRMRX);
1359	else
1360	cbHdr = sizeof(VNETHDR);
1361
1362	Log3(("%s vnetR3TransmitPendingPackets: About to transmit %d pending packets\n",
1363	INSTANCE(pThis), vringReadAvailIndex(pDevIns, &pThisCC->pTxQueue->VRing) - pThisCC->pTxQueue->uNextAvailIndex));
1364
1365	vpciR3SetWriteLed(&pThis->VPCI, true);
1366
1367	/*
1368	* Do not remove descriptors from available ring yet, try to allocate the
1369	* buffer first.
1370	*/
1371	VQUEUEELEM elem; /* This bugger is big! ~48KB on 64-bit hosts. */
1372	while (vqueuePeek(pDevIns, &pThis->VPCI, pQueue, &elem))
1373	{
1374	unsigned int uOffset = 0;
1375	if (elem.cOut < 2 \|\| elem.aSegsOut[0].cb != cbHdr)
1376	{
1377	Log(("%s vnetR3QueueTransmit: The first segment is not the header! (%u < 2 \|\| %u != %u).\n",
1378	INSTANCE(pThis), elem.cOut, elem.aSegsOut[0].cb, cbHdr));
1379	break; /* For now we simply ignore the header, but it must be there anyway! */
1380	}
1381	RT_UNTRUSTED_VALIDATED_FENCE();
1382
1383	VNETHDR Hdr;
1384	unsigned int uSize = 0;
1385	STAM_PROFILE_ADV_START(&pThis->StatTransmit, a);
1386
1387	/* Compute total frame size. */
1388	for (unsigned int i = 1; i < elem.cOut && uSize < VNET_MAX_FRAME_SIZE; i++)
1389	uSize += elem.aSegsOut[i].cb;
1390	Log5(("%s vnetR3TransmitPendingPackets: complete frame is %u bytes.\n", INSTANCE(pThis), uSize));
1391	Assert(uSize <= VNET_MAX_FRAME_SIZE);
1392
1393	/* Truncate oversized frames. */
1394	if (uSize > VNET_MAX_FRAME_SIZE)
1395	uSize = VNET_MAX_FRAME_SIZE;
1396	if (pThisCC->pDrv && vnetR3ReadHeader(pDevIns, elem.aSegsOut[0].addr, &Hdr, uSize))
1397	{
1398	RT_UNTRUSTED_VALIDATED_FENCE();
1399	STAM_REL_COUNTER_INC(&pThis->StatTransmitPackets);
1400	STAM_PROFILE_START(&pThis->StatTransmitSend, a);
1401
1402	PDMNETWORKGSO Gso;
1403	PDMNETWORKGSO *pGso = vnetR3SetupGsoCtx(&Gso, &Hdr);
1404
1405	/** @todo Optimize away the extra copying! (lazy bird) */
1406	PPDMSCATTERGATHER pSgBuf;
1407	int rc = pThisCC->pDrv->pfnAllocBuf(pThisCC->pDrv, uSize, pGso, &pSgBuf);
1408	if (RT_SUCCESS(rc))
1409	{
1410	Assert(pSgBuf->cSegs == 1);
1411	pSgBuf->cbUsed = uSize;
1412
1413	/* Assemble a complete frame. */
1414	for (unsigned int i = 1; i < elem.cOut && uSize > 0; i++)
1415	{
1416	unsigned int cbSegment = RT_MIN(uSize, elem.aSegsOut[i].cb);
1417	PDMDevHlpPhysRead(pDevIns, elem.aSegsOut[i].addr,
1418	((uint8_t*)pSgBuf->aSegs[0].pvSeg) + uOffset,
1419	cbSegment);
1420	uOffset += cbSegment;
1421	uSize -= cbSegment;
1422	}
1423	rc = vnetR3TransmitFrame(pThis, pThisCC, pSgBuf, pGso, &Hdr);
1424	}
1425	else
1426	{
1427	Log4(("virtio-net: failed to allocate SG buffer: size=%u rc=%Rrc\n", uSize, rc));
1428	STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1429	STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1430	/* Stop trying to fetch TX descriptors until we get more bandwidth. */
1431	break;
1432	}
1433
1434	STAM_PROFILE_STOP(&pThis->StatTransmitSend, a);
1435	STAM_REL_COUNTER_ADD(&pThis->StatTransmitBytes, uOffset);
1436	}
1437
1438	/* Remove this descriptor chain from the available ring */
1439	vqueueSkip(pDevIns, &pThis->VPCI, pQueue);
1440	vqueuePut(pDevIns, &pThis->VPCI, pQueue, &elem, sizeof(VNETHDR) + uOffset);
1441	vqueueSync(pDevIns, &pThis->VPCI, pQueue);
1442	STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a);
1443	}
1444	vpciR3SetWriteLed(&pThis->VPCI, false);
1445
1446	if (pDrv)
1447	pDrv->pfnEndXmit(pDrv);
1448	ASMAtomicWriteU32(&pThis->uIsTransmitting, 0);
1449	}
1450
1451	/**
1452	* @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending}
1453	*/
1454	static DECLCALLBACK(void) vnetR3NetworkDown_XmitPending(PPDMINETWORKDOWN pInterface)
1455	{
1456	PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown);
1457	PPDMDEVINS pDevIns = pThisCC->pDevIns;
1458	PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE);
1459	STAM_COUNTER_INC(&pThis->StatTransmitByNetwork);
1460	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /fOnWorkerThread/);
1461	}
1462
1463	# ifdef VNET_TX_DELAY
1464
1465	/**
1466	* @callback_method_impl{FNVPCIQUEUECALLBACK, The TX queue}
1467	*/
1468	static DECLCALLBACK(void) vnetR3QueueTransmit(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1469	{
1470	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1471	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1472
1473	if (PDMDevHlpTimerIsActive(pDevIns, pThis->hTxTimer))
1474	{
1475	PDMDevHlpTimerStop(pDevIns, pThis->hTxTimer);
1476	Log3(("%s vnetR3QueueTransmit: Got kicked with notification disabled, re-enable notification and flush TX queue\n", INSTANCE(pThis)));
1477	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pQueue, false /fOnWorkerThread/);
1478	if (RT_FAILURE(vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY)))
1479	LogRel(("vnetR3QueueTransmit: Failed to enter critical section!/n"));
1480	else
1481	{
1482	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true);
1483	vnetR3CsLeave(pDevIns, pThis);
1484	}
1485	}
1486	else
1487	{
1488	if (RT_FAILURE(vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY)))
1489	LogRel(("vnetR3QueueTransmit: Failed to enter critical section!/n"));
1490	else
1491	{
1492	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, false);
1493	PDMDevHlpTimerSetMicro(pDevIns, pThis->hTxTimer, VNET_TX_DELAY);
1494	pThis->u64NanoTS = RTTimeNanoTS();
1495	vnetR3CsLeave(pDevIns, pThis);
1496	}
1497	}
1498	}
1499
1500	/**
1501	* @callback_method_impl{FNTMTIMERDEV, Transmit Delay Timer handler.}
1502	*/
1503	static DECLCALLBACK(void) vnetR3TxTimer(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
1504	{
1505	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1506	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1507	RT_NOREF(pTimer, pvUser);
1508
1509	uint32_t u32MicroDiff = (uint32_t)((RTTimeNanoTS() - pThis->u64NanoTS) / 1000);
1510	if (u32MicroDiff < pThis->u32MinDiff)
1511	pThis->u32MinDiff = u32MicroDiff;
1512	if (u32MicroDiff > pThis->u32MaxDiff)
1513	pThis->u32MaxDiff = u32MicroDiff;
1514	pThis->u32AvgDiff = (pThis->u32AvgDiff * pThis->u32i + u32MicroDiff) / (pThis->u32i + 1);
1515	pThis->u32i++;
1516	Log3(("vnetR3TxTimer: Expired, diff %9d usec, avg %9d usec, min %9d usec, max %9d usec\n",
1517	u32MicroDiff, pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
1518
1519	// Log3(("%s vnetR3TxTimer: Expired\n", INSTANCE(pThis)));
1520	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /fOnWorkerThread/);
1521	if (RT_FAILURE(vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY)))
1522	{
1523	LogRel(("vnetR3TxTimer: Failed to enter critical section!/n"));
1524	return;
1525	}
1526	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true);
1527	vnetR3CsLeave(pDevIns, pThis);
1528	}
1529
1530	DECLINLINE(int) vnetR3CreateTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1531	{
1532	RT_NOREF(pDevIns, pThis, pThisCC);
1533	return VINF_SUCCESS;
1534	}
1535
1536	DECLINLINE(void) vnetR3DestroyTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1537	{
1538	RT_NOREF(pDevIns, pThis, pThisCC);
1539	}
1540
1541	# else /* !VNET_TX_DELAY */
1542
1543	/**
1544	* @callback_method_impl{FNPDMTHREADDEV}
1545	*/
1546	static DECLCALLBACK(int) vnetR3TxThread(PPDMDEVINS pDevIns, PPDMTHREAD pThread)
1547	{
1548	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1549	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1550
1551	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
1552	return VINF_SUCCESS;
1553
1554	int rc = VINF_SUCCESS;
1555	while (pThread->enmState == PDMTHREADSTATE_RUNNING)
1556	{
1557	rc = PDMDevHlpSUPSemEventWaitNoResume(pDevIns, pThis->hTxEvent, RT_INDEFINITE_WAIT);
1558	if (RT_UNLIKELY(pThread->enmState != PDMTHREADSTATE_RUNNING))
1559	break;
1560	STAM_COUNTER_INC(&pThis->StatTransmitByThread);
1561	while (true)
1562	{
1563	vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /fOnWorkerThread/); /// @todo shouldn't it be true instead?
1564	Log(("vnetR3TxThread: enable kicking and get to sleep\n"));
1565	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true);
1566	if (vqueueIsEmpty(pDevIns, pThisCC->pTxQueue))
1567	break;
1568	vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, false);
1569	}
1570	}
1571
1572	return rc;
1573	}
1574
1575	/**
1576	* @callback_method_impl{FNPDMTHREADWAKEUPDEV}
1577	*/
1578	static DECLCALLBACK(int) vnetR3TxThreadWakeUp(PPDMDEVINS pDevIns, PPDMTHREAD pThread)
1579	{
1580	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1581	RT_NOREF(pThread);
1582	return PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTxEvent);
1583	}
1584
1585	static int vnetR3CreateTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1586	{
1587	int rc = PDMDevHlpSUPSemEventCreate(pDevIns, &pThis->hTxEvent);
1588	if (RT_SUCCESS(rc))
1589	{
1590	rc = PDMDevHlpThreadCreate(pDevIns, &pThisCC->pTxThread, NULL, vnetR3TxThread,
1591	vnetR3TxThreadWakeUp, 0, RTTHREADTYPE_IO, INSTANCE(pThis));
1592	if (RT_FAILURE(rc))
1593	PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("VNET: Failed to create worker thread %s"), INSTANCE(pThis));
1594	}
1595	else
1596	PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("VNET: Failed to create SUP event semaphore"));
1597	return rc;
1598	}
1599
1600	static void vnetR3DestroyTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC)
1601	{
1602	if (pThisCC->pTxThread)
1603	{
1604	/* Destroy the thread. */
1605	int rcThread;
1606	int rc = PDMDevHlpThreadDestroy(pDevIns, pThisCC->pTxThread, &rcThread);
1607	if (RT_FAILURE(rc) \|\| RT_FAILURE(rcThread))
1608	AssertMsgFailed(("%s Failed to destroy async IO thread rc=%Rrc rcThread=%Rrc\n", __FUNCTION__, rc, rcThread));
1609	pThisCC->pTxThread = NULL;
1610	}
1611
1612	if (pThis->hTxEvent != NIL_SUPSEMEVENT)
1613	{
1614	PDMDevHlpSUPSemEventClose(pDevIns, pThis->hTxEvent);
1615	pThis->hTxEvent = NIL_SUPSEMEVENT;
1616	}
1617	}
1618
1619	/**
1620	* @callback_method_impl{FNVPCIQUEUECALLBACK, The TX queue}
1621	*/
1622	static DECLCALLBACK(void) vnetR3QueueTransmit(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1623	{
1624	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1625
1626	Log(("vnetR3QueueTransmit: disable kicking and wake up TX thread\n"));
1627	vringSetNotification(pDevIns, &pQueue->VRing, false);
1628	int rc = PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTxEvent);
1629	AssertRC(rc);
1630	}
1631
1632	# endif /* !VNET_TX_DELAY */
1633
1634	static uint8_t vnetR3ControlRx(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC,
1635	PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1636	{
1637	uint8_t u8Ack = VNET_OK;
1638	uint8_t fOn, fDrvWasPromisc = pThis->fPromiscuous \| pThis->fAllMulti;
1639	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &fOn, sizeof(fOn));
1640	Log(("%s vnetR3ControlRx: uCommand=%u fOn=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, fOn));
1641	switch (pCtlHdr->u8Command)
1642	{
1643	case VNET_CTRL_CMD_RX_MODE_PROMISC:
1644	pThis->fPromiscuous = !!fOn;
1645	break;
1646	case VNET_CTRL_CMD_RX_MODE_ALLMULTI:
1647	pThis->fAllMulti = !!fOn;
1648	break;
1649	default:
1650	u8Ack = VNET_ERROR;
1651	}
1652	if (fDrvWasPromisc != (pThis->fPromiscuous \| pThis->fAllMulti) && pThisCC->pDrv)
1653	pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv,
1654	(pThis->fPromiscuous \| pThis->fAllMulti));
1655
1656	return u8Ack;
1657	}
1658
1659	static uint8_t vnetR3ControlMac(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1660	{
1661	uint32_t nMacs = 0;
1662
1663	if ( pCtlHdr->u8Command != VNET_CTRL_CMD_MAC_TABLE_SET
1664	\|\| pElem->cOut != 3
1665	\|\| pElem->aSegsOut[1].cb < sizeof(nMacs)
1666	\|\| pElem->aSegsOut[2].cb < sizeof(nMacs))
1667	{
1668	Log(("%s vnetR3ControlMac: Segment layout is wrong (u8Command=%u nOut=%u cb1=%u cb2=%u)\n",
1669	INSTANCE(pThis), pCtlHdr->u8Command, pElem->cOut, pElem->aSegsOut[1].cb, pElem->aSegsOut[2].cb));
1670	return VNET_ERROR;
1671	}
1672
1673	/* Load unicast addresses */
1674	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &nMacs, sizeof(nMacs));
1675
1676	if (pElem->aSegsOut[1].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1677	{
1678	Log(("%s vnetR3ControlMac: The unicast mac segment is too small (nMacs=%u cb=%u)\n",
1679	INSTANCE(pThis), nMacs, pElem->aSegsOut[1].cb));
1680	return VNET_ERROR;
1681	}
1682
1683	if (nMacs > VNET_MAC_FILTER_LEN)
1684	{
1685	Log(("%s vnetR3ControlMac: MAC table is too big, have to use promiscuous mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1686	pThis->fPromiscuous = true;
1687	}
1688	else
1689	{
1690	if (nMacs)
1691	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr + sizeof(nMacs), pThis->aMacFilter, nMacs * sizeof(RTMAC));
1692	pThis->cMacFilterEntries = nMacs;
1693	#ifdef LOG_ENABLED
1694	Log(("%s vnetR3ControlMac: unicast macs:\n", INSTANCE(pThis)));
1695	for(unsigned i = 0; i < nMacs; i++)
1696	Log((" %RTmac\n", &pThis->aMacFilter[i]));
1697	#endif
1698	}
1699
1700	/* Load multicast addresses */
1701	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[2].addr, &nMacs, sizeof(nMacs));
1702
1703	if (pElem->aSegsOut[2].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs))
1704	{
1705	Log(("%s vnetR3ControlMac: The multicast mac segment is too small (nMacs=%u cb=%u)\n",
1706	INSTANCE(pThis), nMacs, pElem->aSegsOut[2].cb));
1707	return VNET_ERROR;
1708	}
1709
1710	if (nMacs > VNET_MAC_FILTER_LEN - pThis->cMacFilterEntries)
1711	{
1712	Log(("%s vnetR3ControlMac: MAC table is too big, have to use allmulti mode (nMacs=%u)\n", INSTANCE(pThis), nMacs));
1713	pThis->fAllMulti = true;
1714	}
1715	else
1716	{
1717	if (nMacs)
1718	PDMDevHlpPhysRead(pDevIns,
1719	pElem->aSegsOut[2].addr + sizeof(nMacs),
1720	&pThis->aMacFilter[pThis->cMacFilterEntries],
1721	nMacs * sizeof(RTMAC));
1722	#ifdef LOG_ENABLED
1723	Log(("%s vnetR3ControlMac: multicast macs:\n", INSTANCE(pThis)));
1724	for(unsigned i = 0; i < nMacs; i++)
1725	Log((" %RTmac\n",
1726	&pThis->aMacFilter[i+pThis->cMacFilterEntries]));
1727	#endif
1728	pThis->cMacFilterEntries += nMacs;
1729	}
1730
1731	return VNET_OK;
1732	}
1733
1734	static uint8_t vnetR3ControlVlan(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem)
1735	{
1736	uint8_t u8Ack = VNET_OK;
1737	uint16_t u16Vid;
1738
1739	if (pElem->cOut != 2 \|\| pElem->aSegsOut[1].cb != sizeof(u16Vid))
1740	{
1741	Log(("%s vnetR3ControlVlan: Segment layout is wrong (u8Command=%u nOut=%u cb=%u)\n",
1742	INSTANCE(pThis), pCtlHdr->u8Command, pElem->cOut, pElem->aSegsOut[1].cb));
1743	return VNET_ERROR;
1744	}
1745
1746	PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &u16Vid, sizeof(u16Vid));
1747
1748	if (u16Vid >= VNET_MAX_VID)
1749	{
1750	Log(("%s vnetR3ControlVlan: VLAN ID is out of range (VID=%u)\n", INSTANCE(pThis), u16Vid));
1751	return VNET_ERROR;
1752	}
1753
1754	Log(("%s vnetR3ControlVlan: uCommand=%u VID=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, u16Vid));
1755
1756	switch (pCtlHdr->u8Command)
1757	{
1758	case VNET_CTRL_CMD_VLAN_ADD:
1759	ASMBitSet(pThis->aVlanFilter, u16Vid);
1760	break;
1761	case VNET_CTRL_CMD_VLAN_DEL:
1762	ASMBitClear(pThis->aVlanFilter, u16Vid);
1763	break;
1764	default:
1765	u8Ack = VNET_ERROR;
1766	}
1767
1768	return u8Ack;
1769	}
1770
1771
1772	/**
1773	* @callback_method_impl{FNVPCIQUEUECALLBACK, The CLT queue}
1774	*/
1775	static DECLCALLBACK(void) vnetR3QueueControl(PPDMDEVINS pDevIns, PVQUEUE pQueue)
1776	{
1777	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1778	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1779
1780	VQUEUEELEM elem;
1781	while (vqueueGet(pDevIns, &pThis->VPCI, pQueue, &elem))
1782	{
1783	if (elem.cOut < 1 \|\| elem.aSegsOut[0].cb < sizeof(VNETCTLHDR))
1784	{
1785	Log(("%s vnetR3QueueControl: The first 'out' segment is not the header! (%u < 1 \|\| %u < %u).\n",
1786	INSTANCE(pThis), elem.cOut, elem.aSegsOut[0].cb,sizeof(VNETCTLHDR)));
1787	break; /* Skip the element and hope the next one is good. */
1788	}
1789	if ( elem.cIn < 1
1790	\|\| elem.aSegsIn[elem.cIn - 1].cb < sizeof(VNETCTLACK))
1791	{
1792	Log(("%s vnetR3QueueControl: The last 'in' segment is too small to hold the acknowledge! (%u < 1 \|\| %u < %u).\n",
1793	INSTANCE(pThis), elem.cIn, elem.aSegsIn[elem.cIn - 1].cb, sizeof(VNETCTLACK)));
1794	break; /* Skip the element and hope the next one is good. */
1795	}
1796
1797	uint8_t bAck;
1798	VNETCTLHDR CtlHdr;
1799	PDMDevHlpPhysRead(pDevIns, elem.aSegsOut[0].addr, &CtlHdr, sizeof(CtlHdr));
1800	switch (CtlHdr.u8Class)
1801	{
1802	case VNET_CTRL_CLS_RX_MODE:
1803	bAck = vnetR3ControlRx(pDevIns, pThis, pThisCC, &CtlHdr, &elem);
1804	break;
1805	case VNET_CTRL_CLS_MAC:
1806	bAck = vnetR3ControlMac(pDevIns, pThis, &CtlHdr, &elem);
1807	break;
1808	case VNET_CTRL_CLS_VLAN:
1809	bAck = vnetR3ControlVlan(pDevIns, pThis, &CtlHdr, &elem);
1810	break;
1811	default:
1812	bAck = VNET_ERROR;
1813	}
1814	Log(("%s Processed control message %u, ack=%u.\n", INSTANCE(pThis), CtlHdr.u8Class, bAck));
1815	PDMDevHlpPCIPhysWrite(pDevIns, elem.aSegsIn[elem.cIn - 1].addr, &bAck, sizeof(bAck));
1816
1817	vqueuePut(pDevIns, &pThis->VPCI, pQueue, &elem, sizeof(bAck));
1818	vqueueSync(pDevIns, &pThis->VPCI, pQueue);
1819	}
1820	}
1821
1822	/* -=-=-=-=- Debug info item -=-=-=-=- */
1823
1824	/**
1825	* @callback_method_impl{FNDBGFINFOARGVDEV}
1826	*/
1827	static DECLCALLBACK(void) vnetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, int cArgs, char **papszArgs)
1828	{
1829	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1830	RT_NOREF(cArgs, papszArgs);
1831	vpciR3DumpStateWorker(&pThis->VPCI, pHlp);
1832	}
1833
1834
1835	/* -=-=-=-=- Saved state -=-=-=-=- */
1836
1837	/**
1838	* Saves the configuration.
1839	*
1840	* @param pDevIns The device instance.
1841	* @param pThis The VNET state.
1842	* @param pSSM The handle to the saved state.
1843	*/
1844	static void vnetR3SaveConfig(PPDMDEVINS pDevIns, PVNETSTATE pThis, PSSMHANDLE pSSM)
1845	{
1846	pDevIns->pHlpR3->pfnSSMPutMem(pSSM, &pThis->macConfigured, sizeof(pThis->macConfigured));
1847	}
1848
1849
1850	/**
1851	* @callback_method_impl{FNSSMDEVLIVEEXEC}
1852	*/
1853	static DECLCALLBACK(int) vnetR3LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
1854	{
1855	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1856	RT_NOREF(uPass);
1857	vnetR3SaveConfig(pDevIns, pThis, pSSM);
1858	return VINF_SSM_DONT_CALL_AGAIN;
1859	}
1860
1861
1862	/**
1863	* @callback_method_impl{FNSSMDEVSAVEPREP}
1864	*/
1865	static DECLCALLBACK(int) vnetR3SavePrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1866	{
1867	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1868	RT_NOREF(pSSM);
1869
1870	int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1871	if (RT_SUCCESS(rc))
1872	vnetCsRxLeave(pThis);
1873	return rc;
1874	}
1875
1876
1877	/**
1878	* @callback_method_impl{FNSSMDEVSAVEEXEC}
1879	*/
1880	static DECLCALLBACK(int) vnetR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1881	{
1882	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1883	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1884
1885	/* Save config first */
1886	vnetR3SaveConfig(pDevIns, pThis, pSSM);
1887
1888	/* Save the common part */
1889	int rc = vpciR3SaveExec(pHlp, &pThis->VPCI, pSSM);
1890	AssertRCReturn(rc, rc);
1891
1892	/* Save device-specific part */
1893	pHlp->pfnSSMPutMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac));
1894	pHlp->pfnSSMPutBool( pSSM, pThis->fPromiscuous);
1895	pHlp->pfnSSMPutBool( pSSM, pThis->fAllMulti);
1896	pHlp->pfnSSMPutU32( pSSM, pThis->cMacFilterEntries);
1897	pHlp->pfnSSMPutMem( pSSM, pThis->aMacFilter, pThis->cMacFilterEntries * sizeof(RTMAC));
1898	rc = pHlp->pfnSSMPutMem(pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter));
1899	AssertRCReturn(rc, rc);
1900
1901	Log(("%s State has been saved\n", INSTANCE(pThis)));
1902	return VINF_SUCCESS;
1903	}
1904
1905
1906	/**
1907	* @callback_method_impl{FNSSMDEVLOADPREP,
1908	* Serializes the receive thread - it may be working inside the critsect. }
1909	*/
1910	static DECLCALLBACK(int) vnetR3LoadPrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1911	{
1912	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1913	RT_NOREF(pSSM);
1914
1915	int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY);
1916	if (RT_SUCCESS(rc))
1917	vnetCsRxLeave(pThis);
1918	return rc;
1919	}
1920
1921
1922	/**
1923	* @callback_method_impl{FNSSMDEVLOADEXEC}
1924	*/
1925	static DECLCALLBACK(int) vnetR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1926	{
1927	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1928	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1929	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
1930
1931	/* config checks */
1932	RTMAC macConfigured;
1933	int rc = pHlp->pfnSSMGetMem(pSSM, &macConfigured, sizeof(macConfigured));
1934	AssertRCReturn(rc, rc);
1935	if (memcmp(&macConfigured, &pThis->macConfigured, sizeof(macConfigured))
1936	&& (uPass == 0 \|\| !PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns)))
1937	LogRel(("%s: The mac address differs: config=%RTmac saved=%RTmac\n", INSTANCE(pThis), &pThis->macConfigured, &macConfigured));
1938
1939	rc = vpciR3LoadExec(pHlp, &pThis->VPCI, pSSM, uVersion, uPass, VNET_N_QUEUES);
1940	AssertRCReturn(rc, rc);
1941
1942	if (uPass == SSM_PASS_FINAL)
1943	{
1944	rc = pHlp->pfnSSMGetMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac));
1945	AssertRCReturn(rc, rc);
1946
1947	if (uVersion > VIRTIO_SAVEDSTATE_VERSION_3_1_BETA1)
1948	{
1949	pHlp->pfnSSMGetBool(pSSM, &pThis->fPromiscuous);
1950	pHlp->pfnSSMGetBool(pSSM, &pThis->fAllMulti);
1951	pHlp->pfnSSMGetU32(pSSM, &pThis->cMacFilterEntries);
1952	pHlp->pfnSSMGetMem(pSSM, pThis->aMacFilter, pThis->cMacFilterEntries * sizeof(RTMAC));
1953
1954	/* Clear the rest. */
1955	if (pThis->cMacFilterEntries < VNET_MAC_FILTER_LEN)
1956	memset(&pThis->aMacFilter[pThis->cMacFilterEntries],
1957	0,
1958	(VNET_MAC_FILTER_LEN - pThis->cMacFilterEntries) * sizeof(RTMAC));
1959	rc = pHlp->pfnSSMGetMem(pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter));
1960	AssertRCReturn(rc, rc);
1961	}
1962	else
1963	{
1964	pThis->fPromiscuous = true;
1965	pThis->fAllMulti = false;
1966	pThis->cMacFilterEntries = 0;
1967	memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC));
1968	memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter));
1969	if (pThisCC->pDrv)
1970	pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, true);
1971	}
1972	}
1973
1974	return rc;
1975	}
1976
1977
1978	/**
1979	* @callback_method_impl{FNSSMDEVLOADDONE, Link status adjustments after
1980	* loading.}
1981	*/
1982	static DECLCALLBACK(int) vnetR3LoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1983	{
1984	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
1985	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
1986	RT_NOREF(pSSM);
1987
1988	if (pThisCC->pDrv)
1989	pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, (pThis->fPromiscuous \| pThis->fAllMulti));
1990	/*
1991	* Indicate link down to the guest OS that all network connections have
1992	* been lost, unless we've been teleported here.
1993	*/
1994	if (!PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns))
1995	vnetR3TempLinkDown(pDevIns, pThis, pThisCC);
1996
1997	return VINF_SUCCESS;
1998	}
1999
2000
2001	/* -=-=-=-=- PDMDEVREG -=-=-=-=- */
2002
2003	/**
2004	* @interface_method_impl{PDMDEVREGR3,pfnDetach}
2005	*/
2006	static DECLCALLBACK(void) vnetR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2007	{
2008	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2009	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2010	Log(("%s vnetR3Detach:\n", INSTANCE(pThis)));
2011	RT_NOREF(fFlags);
2012
2013	AssertLogRelReturnVoid(iLUN == 0);
2014
2015	int rc = vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY);
2016	if (RT_FAILURE(rc))
2017	{
2018	LogRel(("vnetR3Detach failed to enter critical section!\n"));
2019	return;
2020	}
2021
2022	vnetR3DestroyTxThreadAndEvent(pDevIns, pThis, pThisCC);
2023
2024	/*
2025	* Zero important members.
2026	*/
2027	pThisCC->pDrvBase = NULL;
2028	pThisCC->pDrv = NULL;
2029
2030	vnetR3CsLeave(pDevIns, pThis);
2031	}
2032
2033
2034	/**
2035	* @interface_method_impl{PDMDEVREGR3,pfnAttach}
2036	*/
2037	static DECLCALLBACK(int) vnetR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
2038	{
2039	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2040	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2041	RT_NOREF(fFlags);
2042	LogFlow(("%s vnetR3Attach:\n", INSTANCE(pThis)));
2043
2044	AssertLogRelReturn(iLUN == 0, VERR_PDM_NO_SUCH_LUN);
2045
2046	int rc = vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY);
2047	if (RT_FAILURE(rc))
2048	{
2049	LogRel(("vnetR3Attach failed to enter critical section!\n"));
2050	return rc;
2051	}
2052
2053	/*
2054	* Attach the driver.
2055	*/
2056	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThisCC->VPCI.IBase, &pThisCC->pDrvBase, "Network Port");
2057	if (RT_SUCCESS(rc))
2058	{
2059	pThisCC->pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->pDrvBase, PDMINETWORKUP);
2060	AssertMsgStmt(pThisCC->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
2061	rc = VERR_PDM_MISSING_INTERFACE_BELOW);
2062
2063	vnetR3CreateTxThreadAndEvent(pDevIns, pThis, pThisCC);
2064	}
2065	else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
2066	\|\| rc == VERR_PDM_CFG_MISSING_DRIVER_NAME)
2067	{
2068	/* This should never happen because this function is not called
2069	* if there is no driver to attach! */
2070	Log(("%s No attached driver!\n", INSTANCE(pThis)));
2071	}
2072
2073	/*
2074	* Temporary set the link down if it was up so that the guest
2075	* will know that we have change the configuration of the
2076	* network card
2077	*/
2078	if (RT_SUCCESS(rc))
2079	vnetR3TempLinkDown(pDevIns, pThis, pThisCC);
2080
2081	vnetR3CsLeave(pDevIns, pThis);
2082	return rc;
2083	}
2084
2085
2086	/**
2087	* @interface_method_impl{PDMDEVREGR3,pfnSuspend}
2088	*/
2089	static DECLCALLBACK(void) vnetR3Suspend(PPDMDEVINS pDevIns)
2090	{
2091	/* Poke thread waiting for buffer space. */
2092	vnetWakeupReceive(pDevIns);
2093	}
2094
2095
2096	/**
2097	* @interface_method_impl{PDMDEVREGR3,pfnPowerOff}
2098	*/
2099	static DECLCALLBACK(void) vnetR3PowerOff(PPDMDEVINS pDevIns)
2100	{
2101	/* Poke thread waiting for buffer space. */
2102	vnetWakeupReceive(pDevIns);
2103	}
2104
2105
2106	/**
2107	* @interface_method_impl{PDMDEVREGR3,pfnDestruct}
2108	*/
2109	static DECLCALLBACK(int) vnetR3Destruct(PPDMDEVINS pDevIns)
2110	{
2111	PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns);
2112	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2113
2114	# ifdef VNET_TX_DELAY
2115	LogRel(("TxTimer stats (avg/min/max): %7d usec %7d usec %7d usec\n", pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff));
2116	# endif
2117
2118	Log(("%s Destroying instance\n", INSTANCE(pThis)));
2119	if (pThis->hEventMoreRxDescAvail != NIL_SUPSEMEVENT)
2120	{
2121	PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hEventMoreRxDescAvail);
2122	PDMDevHlpSUPSemEventClose(pDevIns, pThis->hEventMoreRxDescAvail);
2123	pThis->hEventMoreRxDescAvail = NIL_SUPSEMEVENT;
2124	}
2125
2126	// if (PDMCritSectIsInitialized(&pThis->csRx))
2127	// PDMR3CritSectDelete(&pThis->csRx);
2128
2129	return vpciR3Term(pDevIns, &pThis->VPCI);
2130	}
2131
2132
2133	/**
2134	* @interface_method_impl{PDMDEVREGR3,pfnConstruct}
2135	*/
2136	static DECLCALLBACK(int) vnetR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
2137	{
2138	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2139	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2140	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2141	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
2142	int rc;
2143
2144	/*
2145	* Initialize the instance data suffiencently for the destructor not to blow up.
2146	*/
2147	RTStrPrintf(pThis->VPCI.szInstance, sizeof(pThis->VPCI.szInstance), "VNet%d", iInstance);
2148	pThisCC->pDevIns = pDevIns;
2149	pThis->hEventMoreRxDescAvail = NIL_SUPSEMEVENT;
2150	# ifndef VNET_TX_DELAY
2151	pThis->hTxEvent = NIL_SUPSEMEVENT;
2152	pThisCC->pTxThread = NULL;
2153	# endif
2154
2155	/* Initialize state structure */
2156	pThis->u32PktNo = 1;
2157
2158	/* Interfaces */
2159	pThisCC->INetworkDown.pfnWaitReceiveAvail = vnetR3NetworkDown_WaitReceiveAvail;
2160	pThisCC->INetworkDown.pfnReceive = vnetR3NetworkDown_Receive;
2161	pThisCC->INetworkDown.pfnReceiveGso = vnetR3NetworkDown_ReceiveGso;
2162	pThisCC->INetworkDown.pfnXmitPending = vnetR3NetworkDown_XmitPending;
2163
2164	pThisCC->INetworkConfig.pfnGetMac = vnetR3NetworkConfig_GetMac;
2165	pThisCC->INetworkConfig.pfnGetLinkState = vnetR3NetworkConfig_GetLinkState;
2166	pThisCC->INetworkConfig.pfnSetLinkState = vnetR3NetworkConfig_SetLinkState;
2167
2168
2169	/* Do our own locking. */
2170	rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
2171	AssertRCReturn(rc, rc);
2172
2173	/*
2174	* Initialize VPCI part.
2175	*/
2176	pThisCC->VPCI.IBase.pfnQueryInterface = vnetQueryInterface;
2177
2178	rc = vpciR3Init(pDevIns, &pThis->VPCI, &pThisCC->VPCI, VIRTIO_NET_ID, VNET_PCI_CLASS, VNET_N_QUEUES);
2179	AssertRCReturn(rc, rc);
2180
2181	pThisCC->pRxQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 256, vnetR3QueueReceive, "RX ");
2182	pThisCC->pTxQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 256, vnetR3QueueTransmit, "TX ");
2183	pThisCC->pCtlQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 16, vnetR3QueueControl, "CTL");
2184	AssertLogRelReturn(pThisCC->pCtlQueue && pThisCC->pTxQueue && pThisCC->pRxQueue, VERR_INTERNAL_ERROR_5);
2185
2186	Log(("%s Constructing new instance\n", INSTANCE(pThis)));
2187
2188	/*
2189	* Validate configuration.
2190	*/
2191	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "MAC\|CableConnected\|LineSpeed\|LinkUpDelay\|StatNo", "");
2192
2193	/* Get config params */
2194	rc = pHlp->pfnCFGMQueryBytes(pCfg, "MAC", pThis->macConfigured.au8, sizeof(pThis->macConfigured));
2195	if (RT_FAILURE(rc))
2196	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get MAC address"));
2197
2198	rc = pHlp->pfnCFGMQueryBool(pCfg, "CableConnected", &pThis->fCableConnected);
2199	if (RT_FAILURE(rc))
2200	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the value of 'CableConnected'"));
2201
2202	rc = pHlp->pfnCFGMQueryU32Def(pCfg, "LinkUpDelay", &pThis->cMsLinkUpDelay, 5000); /* ms */
2203	if (RT_FAILURE(rc))
2204	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the value of 'LinkUpDelay'"));
2205	Assert(pThis->cMsLinkUpDelay <= 300000); /* less than 5 minutes */
2206	if (pThis->cMsLinkUpDelay > 5000 \|\| pThis->cMsLinkUpDelay < 100)
2207	LogRel(("%s WARNING! Link up delay is set to %u seconds!\n", INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2208	Log(("%s Link up delay is set to %u seconds\n", INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000));
2209
2210	uint32_t uStatNo = iInstance;
2211	rc = pHlp->pfnCFGMQueryU32Def(pCfg, "StatNo", &uStatNo, iInstance);
2212	if (RT_FAILURE(rc))
2213	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the \"StatNo\" value"));
2214
2215	vnetPrintFeatures(pThis, vnetIoCb_GetHostFeatures(&pThis->VPCI), "Device supports the following features");
2216
2217	/* Initialize PCI config space */
2218	memcpy(pThis->config.mac.au8, pThis->macConfigured.au8, sizeof(pThis->config.mac.au8));
2219	pThis->config.uStatus = 0;
2220
2221	/* Initialize critical section. */
2222	// char szTmp[sizeof(pThis->VPCI.szInstance) + 2];
2223	// RTStrPrintf(szTmp, sizeof(szTmp), "%sRX", pThis->VPCI.szInstance);
2224	// rc = PDMDevHlpCritSectInit(pDevIns, &pThis->csRx, szTmp);
2225	// if (RT_FAILURE(rc))
2226	// return rc;
2227
2228	/* Map our ports to IO space. */
2229	rc = PDMDevHlpPCIIORegionCreateIo(pDevIns, 0 /iPciReion/, VPCI_CONFIG + sizeof(VNetPCIConfig),
2230	vnetIOPortOut, vnetIOPortIn, NULL /pvUser/, "VirtioNet", NULL /paExtDescs/,
2231	&pThis->hIoPorts);
2232	AssertRCReturn(rc, rc);
2233
2234	/* Register save/restore state handlers. */
2235	rc = PDMDevHlpSSMRegisterEx(pDevIns, VIRTIO_SAVEDSTATE_VERSION, sizeof(VNETSTATE), NULL,
2236	NULL, vnetR3LiveExec, NULL,
2237	vnetR3SavePrep, vnetR3SaveExec, NULL,
2238	vnetR3LoadPrep, vnetR3LoadExec, vnetR3LoadDone);
2239	AssertRCReturn(rc, rc);
2240
2241	/* Create Link Up Timer */
2242	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetR3LinkUpTimer, NULL, TMTIMER_FLAGS_NO_CRIT_SECT,
2243	"VirtioNet Link Up Timer", &pThisCC->hLinkUpTimer);
2244	AssertRCReturn(rc, rc);
2245
2246	# ifdef VNET_TX_DELAY
2247	/* Create Transmit Delay Timer */
2248	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetR3TxTimer, pThis, TMTIMER_FLAGS_NO_CRIT_SECT,
2249	"VirtioNet TX Delay Timer", &pThis->hTxTimer);
2250	AssertRCReturn(rc, rc);
2251
2252	pThis->u32i = pThis->u32AvgDiff = pThis->u32MaxDiff = 0;
2253	pThis->u32MinDiff = UINT32_MAX;
2254	# endif /* VNET_TX_DELAY */
2255
2256	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThisCC->VPCI.IBase, &pThisCC->pDrvBase, "Network Port");
2257	if (RT_SUCCESS(rc))
2258	{
2259	pThisCC->pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->pDrvBase, PDMINETWORKUP);
2260	AssertMsgReturn(pThisCC->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"),
2261	VERR_PDM_MISSING_INTERFACE_BELOW);
2262
2263	vnetR3CreateTxThreadAndEvent(pDevIns, pThis, pThisCC);
2264	}
2265	else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER
2266	\|\| rc == VERR_PDM_CFG_MISSING_DRIVER_NAME )
2267	{
2268	/* No error! */
2269	Log(("%s This adapter is not attached to any network!\n", INSTANCE(pThis)));
2270	}
2271	else
2272	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to attach the network LUN"));
2273
2274	rc = PDMDevHlpSUPSemEventCreate(pDevIns, &pThis->hEventMoreRxDescAvail);
2275	AssertRCReturn(rc, rc);
2276
2277	ASMCompilerBarrier(); /* paranoia */
2278	rc = vnetIoCb_Reset(pDevIns);
2279	AssertRCReturn(rc, rc);
2280
2281	/*
2282	* Statistics and debug stuff.
2283	* The /Public/ bits are official and used by session info in the GUI.
2284	*/
2285	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES,
2286	"Amount of data received", "/Public/NetAdapter/%u/BytesReceived", uStatNo);
2287	PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES,
2288	"Amount of data transmitted", "/Public/NetAdapter/%u/BytesTransmitted", uStatNo);
2289	PDMDevHlpSTAMRegisterF(pDevIns, &pDevIns->iInstance, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE,
2290	"Device instance number", "/Public/NetAdapter/%u/%s", uStatNo, pDevIns->pReg->szName);
2291
2292	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, "ReceiveBytes", STAMUNIT_BYTES, "Amount of data received");
2293	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, "TransmitBytes", STAMUNIT_BYTES, "Amount of data transmitted");
2294	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveGSO, STAMTYPE_COUNTER, "Packets/ReceiveGSO", STAMUNIT_COUNT, "Number of received GSO packets");
2295	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitPackets, STAMTYPE_COUNTER, "Packets/Transmit", STAMUNIT_COUNT, "Number of sent packets");
2296	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitGSO, STAMTYPE_COUNTER, "Packets/Transmit-Gso", STAMUNIT_COUNT, "Number of sent GSO packets");
2297	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitCSum, STAMTYPE_COUNTER, "Packets/Transmit-Csum", STAMUNIT_COUNT, "Number of completed TX checksums");
2298	# ifdef VBOX_WITH_STATISTICS
2299	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceive, STAMTYPE_PROFILE, "Receive/Total", STAMUNIT_TICKS_PER_CALL, "Profiling receive");
2300	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveStore, STAMTYPE_PROFILE, "Receive/Store", STAMUNIT_TICKS_PER_CALL, "Profiling receive storing");
2301	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRxOverflow, STAMTYPE_PROFILE, "RxOverflow", STAMUNIT_TICKS_PER_OCCURENCE, "Profiling RX overflows");
2302	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRxOverflowWakeup, STAMTYPE_COUNTER, "RxOverflowWakeup", STAMUNIT_OCCURENCES, "Nr of RX overflow wakeups");
2303	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmit, STAMTYPE_PROFILE, "Transmit/Total", STAMUNIT_TICKS_PER_CALL, "Profiling transmits in HC");
2304	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitSend, STAMTYPE_PROFILE, "Transmit/Send", STAMUNIT_TICKS_PER_CALL, "Profiling send transmit in HC");
2305	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitByNetwork, STAMTYPE_COUNTER, "Transmit/ByNetwork", STAMUNIT_COUNT, "Network-initiated transmissions");
2306	PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitByThread, STAMTYPE_COUNTER, "Transmit/ByThread", STAMUNIT_COUNT, "Thread-initiated transmissions");
2307	# endif
2308
2309	char szInfo[16];
2310	RTStrPrintf(szInfo, sizeof(szInfo), pDevIns->iInstance ? "vionet%u" : "vionet", pDevIns->iInstance);
2311	PDMDevHlpDBGFInfoRegisterArgv(pDevIns, szInfo, "virtio-net info", vnetR3Info);
2312
2313	return VINF_SUCCESS;
2314	}
2315
2316	#else /* !IN_RING3 */
2317
2318	/**
2319	* @callback_method_impl{PDMDEVREGR0,pfnConstruct}
2320	*/
2321	static DECLCALLBACK(int) vnetRZConstruct(PPDMDEVINS pDevIns)
2322	{
2323	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
2324	PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE);
2325	PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC);
2326
2327	int rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns));
2328	AssertRCReturn(rc, rc);
2329
2330	rc = PDMDevHlpIoPortSetUpContext(pDevIns, pThis->hIoPorts, vnetIOPortOut, vnetIOPortIn, NULL /pvUser/);
2331	AssertRCReturn(rc, rc);
2332
2333	return vpciRZInit(pDevIns, &pThis->VPCI, &pThisCC->VPCI);
2334	}
2335
2336	#endif /* !IN_RING3 */
2337
2338	/**
2339	* The device registration structure.
2340	*/
2341	const PDMDEVREG g_DeviceVirtioNet =
2342	{
2343	/* .u32version = */ PDM_DEVREG_VERSION,
2344	/* .uReserved0 = */ 0,
2345	/* .szName = */ "virtio-net",
2346	/* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RZ \| PDM_DEVREG_FLAGS_NEW_STYLE,
2347	/* .fClass = */ PDM_DEVREG_CLASS_NETWORK,
2348	/* .cMaxInstances = */ ~0U,
2349	/* .uSharedVersion = */ 42,
2350	/* .cbInstanceShared = */ sizeof(VNETSTATE),
2351	/* .cbInstanceCC = */ sizeof(VNETSTATECC),
2352	/* .cbInstanceRC = */ sizeof(VNETSTATERC),
2353	/* .cMaxPciDevices = */ 1,
2354	/* .cMaxMsixVectors = */ 0,
2355	/* .pszDescription = */ "Virtio Ethernet.\n",
2356	#if defined(IN_RING3)
2357	/* .pszRCMod = */ "VBoxDDRC.rc",
2358	/* .pszR0Mod = */ "VBoxDDR0.r0",
2359	/* .pfnConstruct = */ vnetR3Construct,
2360	/* .pfnDestruct = */ vnetR3Destruct,
2361	/* .pfnRelocate = */ NULL,
2362	/* .pfnMemSetup = */ NULL,
2363	/* .pfnPowerOn = */ NULL,
2364	/* .pfnReset = */ NULL,
2365	/* .pfnSuspend = */ vnetR3Suspend,
2366	/* .pfnResume = */ NULL,
2367	/* .pfnAttach = */ vnetR3Attach,
2368	/* .pfnDetach = */ vnetR3Detach,
2369	/* .pfnQueryInterface = */ NULL,
2370	/* .pfnInitComplete = */ NULL,
2371	/* .pfnPowerOff = */ vnetR3PowerOff,
2372	/* .pfnSoftReset = */ NULL,
2373	/* .pfnReserved0 = */ NULL,
2374	/* .pfnReserved1 = */ NULL,
2375	/* .pfnReserved2 = */ NULL,
2376	/* .pfnReserved3 = */ NULL,
2377	/* .pfnReserved4 = */ NULL,
2378	/* .pfnReserved5 = */ NULL,
2379	/* .pfnReserved6 = */ NULL,
2380	/* .pfnReserved7 = */ NULL,
2381	#elif defined(IN_RING0)
2382	/* .pfnEarlyConstruct = */ NULL,
2383	/* .pfnConstruct = */ vnetRZConstruct,
2384	/* .pfnDestruct = */ NULL,
2385	/* .pfnFinalDestruct = */ NULL,
2386	/* .pfnRequest = */ NULL,
2387	/* .pfnReserved0 = */ NULL,
2388	/* .pfnReserved1 = */ NULL,
2389	/* .pfnReserved2 = */ NULL,
2390	/* .pfnReserved3 = */ NULL,
2391	/* .pfnReserved4 = */ NULL,
2392	/* .pfnReserved5 = */ NULL,
2393	/* .pfnReserved6 = */ NULL,
2394	/* .pfnReserved7 = */ NULL,
2395	#elif defined(IN_RC)
2396	/* .pfnConstruct = */ vnetRZConstruct,
2397	/* .pfnReserved0 = */ NULL,
2398	/* .pfnReserved1 = */ NULL,
2399	/* .pfnReserved2 = */ NULL,
2400	/* .pfnReserved3 = */ NULL,
2401	/* .pfnReserved4 = */ NULL,
2402	/* .pfnReserved5 = */ NULL,
2403	/* .pfnReserved6 = */ NULL,
2404	/* .pfnReserved7 = */ NULL,
2405	#else
2406	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
2407	#endif
2408	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
2409	};
2410
2411	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */

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source: vbox/trunk/src/VBox/Devices/Network/DevVirtioNet.cpp@ 82254

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