/* $Id: DevVirtioNet.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */ /** @file * DevVirtioNet - Virtio Network Device */ /* * Copyright (C) 2009-2022 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_DEV_VIRTIO_NET #define VNET_WITH_GSO #define VNET_WITH_MERGEABLE_RX_BUFS #include #include #include #include #include #include #ifdef IN_RING3 # include #endif #include #include "VBoxDD.h" #include "../VirtIO/Virtio.h" /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ #ifndef VBOX_DEVICE_STRUCT_TESTCASE #define INSTANCE(pThis) pThis->VPCI.szInstance #ifdef IN_RING3 # define VNET_PCI_CLASS 0x0200 # define VNET_N_QUEUES 3 # if 0 /* Virtio Block Device */ # define VNET_PCI_CLASS 0x0180 # define VNET_N_QUEUES 2 # endif #endif /* IN_RING3 */ #endif /* VBOX_DEVICE_STRUCT_TESTCASE */ /* * Commenting out VNET_TX_DELAY enables async transmission in a dedicated thread. * When VNET_TX_DELAY is defined, a timer handler does the job. */ //#define VNET_TX_DELAY 150 /**< 150 microseconds */ #define VNET_MAX_FRAME_SIZE 65535 + 18 /**< Max IP packet size + Ethernet header with VLAN tag */ #define VNET_MAC_FILTER_LEN 32 #define VNET_MAX_VID (1 << 12) /** @name Virtio net features * @{ */ #define VNET_F_CSUM 0x00000001 /**< Host handles pkts w/ partial csum */ #define VNET_F_GUEST_CSUM 0x00000002 /**< Guest handles pkts w/ partial csum */ #define VNET_F_MAC 0x00000020 /**< Host has given MAC address. */ #define VNET_F_GSO 0x00000040 /**< Host handles pkts w/ any GSO type */ #define VNET_F_GUEST_TSO4 0x00000080 /**< Guest can handle TSOv4 in. */ #define VNET_F_GUEST_TSO6 0x00000100 /**< Guest can handle TSOv6 in. */ #define VNET_F_GUEST_ECN 0x00000200 /**< Guest can handle TSO[6] w/ ECN in. */ #define VNET_F_GUEST_UFO 0x00000400 /**< Guest can handle UFO in. */ #define VNET_F_HOST_TSO4 0x00000800 /**< Host can handle TSOv4 in. */ #define VNET_F_HOST_TSO6 0x00001000 /**< Host can handle TSOv6 in. */ #define VNET_F_HOST_ECN 0x00002000 /**< Host can handle TSO[6] w/ ECN in. */ #define VNET_F_HOST_UFO 0x00004000 /**< Host can handle UFO in. */ #define VNET_F_MRG_RXBUF 0x00008000 /**< Host can merge receive buffers. */ #define VNET_F_STATUS 0x00010000 /**< virtio_net_config.status available */ #define VNET_F_CTRL_VQ 0x00020000 /**< Control channel available */ #define VNET_F_CTRL_RX 0x00040000 /**< Control channel RX mode support */ #define VNET_F_CTRL_VLAN 0x00080000 /**< Control channel VLAN filtering */ /** @} */ #define VNET_S_LINK_UP 1 /********************************************************************************************************************************* * Structures and Typedefs * *********************************************************************************************************************************/ #ifdef _MSC_VER struct VNetPCIConfig #else /* !_MSC_VER */ struct __attribute__ ((__packed__)) VNetPCIConfig /** @todo r=bird: Use #pragma pack if necessary, that's portable! */ #endif /* !_MSC_VER */ { RTMAC mac; uint16_t uStatus; }; AssertCompileMemberOffset(struct VNetPCIConfig, uStatus, 6); /** * The virtio-net shared instance data. * * @extends VPCISTATE */ typedef struct VNETSTATE { VPCISTATE VPCI; // PDMCRITSECT csRx; /**< Protects RX queue. */ #ifdef VNET_TX_DELAY /** Transmit Delay Timer. */ TMTIMERHANDLE hTxTimer; uint32_t u32i; uint32_t u32AvgDiff; uint32_t u32MinDiff; uint32_t u32MaxDiff; uint64_t u64NanoTS; #else /* !VNET_TX_DELAY */ /** The event semaphore TX thread waits on. */ SUPSEMEVENT hTxEvent; #endif /* !VNET_TX_DELAY */ /** Indicates transmission in progress -- only one thread is allowed. */ uint32_t uIsTransmitting; /** PCI config area holding MAC address as well as TBD. */ struct VNetPCIConfig config; /** MAC address obtained from the configuration. */ RTMAC macConfigured; /** True if physical cable is attached in configuration. */ bool fCableConnected; /** Link up delay (in milliseconds). */ uint32_t cMsLinkUpDelay; uint32_t alignment; /** Number of packet being sent/received to show in debug log. */ uint32_t u32PktNo; /** N/A: */ bool volatile fMaybeOutOfSpace; /** Promiscuous mode -- RX filter accepts all packets. */ bool fPromiscuous; /** AllMulti mode -- RX filter accepts all multicast packets. */ bool fAllMulti; /** The number of actually used slots in aMacTable. */ uint32_t cMacFilterEntries; /** Array of MAC addresses accepted by RX filter. */ RTMAC aMacFilter[VNET_MAC_FILTER_LEN]; /** Bit array of VLAN filter, one bit per VLAN ID. */ uint8_t aVlanFilter[VNET_MAX_VID / sizeof(uint8_t)]; /* Receive-blocking-related fields ***************************************/ /** EMT: Gets signalled when more RX descriptors become available. */ SUPSEMEVENT hEventMoreRxDescAvail; /** Handle of the I/O port range. */ IOMIOPORTHANDLE hIoPorts; /** @name Statistic * @{ */ STAMCOUNTER StatReceiveBytes; STAMCOUNTER StatTransmitBytes; STAMCOUNTER StatReceiveGSO; STAMCOUNTER StatTransmitPackets; STAMCOUNTER StatTransmitGSO; STAMCOUNTER StatTransmitCSum; #ifdef VBOX_WITH_STATISTICS STAMPROFILE StatReceive; STAMPROFILE StatReceiveStore; STAMPROFILEADV StatTransmit; STAMPROFILE StatTransmitSend; STAMPROFILE StatRxOverflow; STAMCOUNTER StatRxOverflowWakeup; STAMCOUNTER StatTransmitByNetwork; STAMCOUNTER StatTransmitByThread; #endif /** @} */ } VNETSTATE; /** Pointer to the virtio-net shared instance data. */ typedef VNETSTATE *PVNETSTATE; /** * The virtio-net ring-3 instance data. * * @extends VPCISTATER3 * @implements PDMINETWORKDOWN * @implements PDMINETWORKCONFIG */ typedef struct VNETSTATER3 { VPCISTATER3 VPCI; PDMINETWORKDOWN INetworkDown; PDMINETWORKCONFIG INetworkConfig; R3PTRTYPE(PPDMIBASE) pDrvBase; /**< Attached network driver. */ R3PTRTYPE(PPDMINETWORKUP) pDrv; /**< Connector of attached network driver. */ /** The device instance. * @note This is _only_ for use when dealing with interface callbacks. */ PPDMDEVINSR3 pDevIns; #ifndef VNET_TX_DELAY R3PTRTYPE(PPDMTHREAD) pTxThread; #endif R3PTRTYPE(PVQUEUE) pRxQueue; R3PTRTYPE(PVQUEUE) pTxQueue; R3PTRTYPE(PVQUEUE) pCtlQueue; /** Link Up(/Restore) Timer. */ TMTIMERHANDLE hLinkUpTimer; } VNETSTATER3; /** Pointer to the virtio-net ring-3 instance data. */ typedef VNETSTATER3 *PVNETSTATER3; /** * The virtio-net ring-0 instance data. * * @extends VPCISTATER0 */ typedef struct VNETSTATER0 { VPCISTATER0 VPCI; } VNETSTATER0; /** Pointer to the virtio-net ring-0 instance data. */ typedef VNETSTATER0 *PVNETSTATER0; /** * The virtio-net raw-mode instance data. * * @extends VPCISTATERC */ typedef struct VNETSTATERC { VPCISTATERC VPCI; } VNETSTATERC; /** Pointer to the virtio-net ring-0 instance data. */ typedef VNETSTATERC *PVNETSTATERC; /** The virtio-net currenct context instance data. */ typedef CTX_SUFF(VNETSTATE) VNETSTATECC; /** Pointer to the virtio-net currenct context instance data. */ typedef CTX_SUFF(PVNETSTATE) PVNETSTATECC; #ifndef VBOX_DEVICE_STRUCT_TESTCASE #define VNETHDR_F_NEEDS_CSUM 1 // Use u16CSumStart, u16CSumOffset #define VNETHDR_GSO_NONE 0 // Not a GSO frame #define VNETHDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO) #define VNETHDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO) #define VNETHDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VNETHDR_GSO_ECN 0x80 // TCP has ECN set struct VNetHdr { uint8_t u8Flags; uint8_t u8GSOType; uint16_t u16HdrLen; uint16_t u16GSOSize; uint16_t u16CSumStart; uint16_t u16CSumOffset; }; typedef struct VNetHdr VNETHDR; typedef VNETHDR *PVNETHDR; AssertCompileSize(VNETHDR, 10); struct VNetHdrMrx { VNETHDR Hdr; uint16_t u16NumBufs; }; typedef struct VNetHdrMrx VNETHDRMRX; typedef VNETHDRMRX *PVNETHDRMRX; AssertCompileSize(VNETHDRMRX, 12); AssertCompileMemberOffset(VNETSTATE, VPCI, 0); #define VNET_OK 0 #define VNET_ERROR 1 typedef uint8_t VNETCTLACK; #define VNET_CTRL_CLS_RX_MODE 0 #define VNET_CTRL_CMD_RX_MODE_PROMISC 0 #define VNET_CTRL_CMD_RX_MODE_ALLMULTI 1 #define VNET_CTRL_CLS_MAC 1 #define VNET_CTRL_CMD_MAC_TABLE_SET 0 #define VNET_CTRL_CLS_VLAN 2 #define VNET_CTRL_CMD_VLAN_ADD 0 #define VNET_CTRL_CMD_VLAN_DEL 1 typedef struct VNetCtlHdr { uint8_t u8Class; uint8_t u8Command; } VNETCTLHDR; AssertCompileSize(VNETCTLHDR, 2); typedef VNETCTLHDR *PVNETCTLHDR; #ifdef IN_RING3 /** Returns true if large packets are written into several RX buffers. */ DECLINLINE(bool) vnetR3MergeableRxBuffers(PVNETSTATE pThis) { return !!(pThis->VPCI.uGuestFeatures & VNET_F_MRG_RXBUF); } #define VNET_R3_CS_ENTER_RETURN_VOID(a_pDevIns, a_pThis) VPCI_R3_CS_ENTER_RETURN_VOID(a_pDevIns, &(a_pThis)->VPCI) DECLINLINE(int) vnetR3CsEnter(PPDMDEVINS pDevIns, PVNETSTATE pThis, int rcBusy) { return vpciCsEnter(pDevIns, &pThis->VPCI, rcBusy); } DECLINLINE(void) vnetR3CsLeave(PPDMDEVINS pDevIns, PVNETSTATE pThis) { vpciCsLeave(pDevIns, &pThis->VPCI); } DECLINLINE(int) vnetCsRxEnter(PVNETSTATE pThis, int rcBusy) { RT_NOREF_PV(pThis); RT_NOREF_PV(rcBusy); // STAM_PROFILE_START(&pThis->CTXSUFF(StatCsRx), a); // int rc = PDMCritSectEnter(&pThis->csRx, rcBusy); // STAM_PROFILE_STOP(&pThis->CTXSUFF(StatCsRx), a); // return rc; return VINF_SUCCESS; } DECLINLINE(void) vnetCsRxLeave(PVNETSTATE pThis) { RT_NOREF_PV(pThis); // PDMCritSectLeave(&pThis->csRx); } /** * A helper function to detect the link state to the other side of "the wire". * * When deciding to bring up the link we need to take into account both if the * cable is connected and if our device is actually connected to the outside * world. If no driver is attached we won't start the TX thread nor we will * initialize the TX semaphore, which is a problem for the TX queue handler. * * @returns true if the device is connected to something. * * @param pDevIns The device instance. */ DECLINLINE(bool) vnetR3IsConnected(PPDMDEVINS pDevIns) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); return pThis->fCableConnected && pThisCC->pDrv; } /** * Dump a packet to debug log. * * @param pThis The virtio-net shared instance data. * @param pbPacket The packet. * @param cb The size of the packet. * @param pszText A string denoting direction of packet transfer. */ DECLINLINE(void) vnetR3PacketDump(PVNETSTATE pThis, const uint8_t *pbPacket, size_t cb, const char *pszText) { # ifdef DEBUG # if 0 Log(("%s %s packet #%d (%d bytes):\n", INSTANCE(pThis), pszText, ++pThis->u32PktNo, cb)); Log3(("%.*Rhxd\n", cb, pbPacket)); # else vboxEthPacketDump(INSTANCE(pThis), pszText, pbPacket, (uint32_t)cb); # endif # else RT_NOREF4(pThis, pbPacket, cb, pszText); # endif } #endif /* IN_RING3 */ /** * Print features given in uFeatures to debug log. * * @param pThis The virtio-net shared instance data. * @param fFeatures Descriptions of which features to print. * @param pcszText A string to print before the list of features. */ DECLINLINE(void) vnetPrintFeatures(PVNETSTATE pThis, uint32_t fFeatures, const char *pcszText) { #ifdef LOG_ENABLED static struct { uint32_t fMask; const char *pcszDesc; } const s_aFeatures[] = { { VNET_F_CSUM, "host handles pkts w/ partial csum" }, { VNET_F_GUEST_CSUM, "guest handles pkts w/ partial csum" }, { VNET_F_MAC, "host has given MAC address" }, { VNET_F_GSO, "host handles pkts w/ any GSO type" }, { VNET_F_GUEST_TSO4, "guest can handle TSOv4 in" }, { VNET_F_GUEST_TSO6, "guest can handle TSOv6 in" }, { VNET_F_GUEST_ECN, "guest can handle TSO[6] w/ ECN in" }, { VNET_F_GUEST_UFO, "guest can handle UFO in" }, { VNET_F_HOST_TSO4, "host can handle TSOv4 in" }, { VNET_F_HOST_TSO6, "host can handle TSOv6 in" }, { VNET_F_HOST_ECN, "host can handle TSO[6] w/ ECN in" }, { VNET_F_HOST_UFO, "host can handle UFO in" }, { VNET_F_MRG_RXBUF, "host can merge receive buffers" }, { VNET_F_STATUS, "virtio_net_config.status available" }, { VNET_F_CTRL_VQ, "control channel available" }, { VNET_F_CTRL_RX, "control channel RX mode support" }, { VNET_F_CTRL_VLAN, "control channel VLAN filtering" } }; Log3(("%s %s:\n", INSTANCE(pThis), pcszText)); for (unsigned i = 0; i < RT_ELEMENTS(s_aFeatures); ++i) { if (s_aFeatures[i].fMask & fFeatures) Log3(("%s --> %s\n", INSTANCE(pThis), s_aFeatures[i].pcszDesc)); } #else /* !LOG_ENABLED */ RT_NOREF3(pThis, fFeatures, pcszText); #endif /* !LOG_ENABLED */ } /** * @interface_method_impl{VPCIIOCALLBACKS,pfnGetHostFeatures} */ static DECLCALLBACK(uint32_t) vnetIoCb_GetHostFeatures(PVPCISTATE pVPciState) { RT_NOREF_PV(pVPciState); /* We support: * - Host-provided MAC address * - Link status reporting in config space * - Control queue * - RX mode setting * - MAC filter table * - VLAN filter */ return VNET_F_MAC | VNET_F_STATUS | VNET_F_CTRL_VQ | VNET_F_CTRL_RX | VNET_F_CTRL_VLAN #ifdef VNET_WITH_GSO | VNET_F_CSUM | VNET_F_HOST_TSO4 | VNET_F_HOST_TSO6 | VNET_F_HOST_UFO | VNET_F_GUEST_CSUM /* We expect the guest to accept partial TCP checksums (see @bugref{4796}) */ | VNET_F_GUEST_TSO4 | VNET_F_GUEST_TSO6 | VNET_F_GUEST_UFO #endif #ifdef VNET_WITH_MERGEABLE_RX_BUFS | VNET_F_MRG_RXBUF #endif ; } /** * @interface_method_impl{VPCIIOCALLBACKS,pfnGetHostMinimalFeatures} */ static DECLCALLBACK(uint32_t) vnetIoCb_GetHostMinimalFeatures(PVPCISTATE pVPciState) { RT_NOREF_PV(pVPciState); return VNET_F_MAC; } /** * @interface_method_impl{VPCIIOCALLBACKS,pfnSetHostFeatures} */ static DECLCALLBACK(void) vnetIoCb_SetHostFeatures(PVPCISTATE pVPciState, uint32_t fFeatures) { PVNETSTATE pThis = RT_FROM_MEMBER(pVPciState, VNETSTATE, VPCI); /** @todo Nothing to do here yet */ LogFlow(("%s vnetIoCb_SetHostFeatures: uFeatures=%x\n", INSTANCE(pThis), fFeatures)); vnetPrintFeatures(pThis, fFeatures, "The guest negotiated the following features"); } /** * @interface_method_impl{VPCIIOCALLBACKS,pfnGetConfig} */ static DECLCALLBACK(int) vnetIoCb_GetConfig(PVPCISTATE pVPciState, uint32_t offCfg, uint32_t cb, void *data) { PVNETSTATE pThis = RT_FROM_MEMBER(pVPciState, VNETSTATE, VPCI); if (offCfg + cb > sizeof(struct VNetPCIConfig)) { Log(("%s vnetIoCb_GetConfig: Read beyond the config structure is attempted (offCfg=%#x cb=%x).\n", INSTANCE(pThis), offCfg, cb)); return VERR_IOM_IOPORT_UNUSED; } memcpy(data, (uint8_t *)&pThis->config + offCfg, cb); return VINF_SUCCESS; } /** * @interface_method_impl{VPCIIOCALLBACKS,pfnSetConfig} */ static DECLCALLBACK(int) vnetIoCb_SetConfig(PVPCISTATE pVPciState, uint32_t offCfg, uint32_t cb, void *data) { PVNETSTATE pThis = RT_FROM_MEMBER(pVPciState, VNETSTATE, VPCI); if (offCfg + cb > sizeof(struct VNetPCIConfig)) { Log(("%s vnetIoCb_SetConfig: Write beyond the config structure is attempted (offCfg=%#x cb=%x).\n", INSTANCE(pThis), offCfg, cb)); if (offCfg < sizeof(struct VNetPCIConfig)) memcpy((uint8_t *)&pThis->config + offCfg, data, sizeof(struct VNetPCIConfig) - offCfg); return VINF_SUCCESS; } memcpy((uint8_t *)&pThis->config + offCfg, data, cb); return VINF_SUCCESS; } /** * @interface_method_impl{VPCIIOCALLBACKS,pfnReset} * * Hardware reset. Revert all registers to initial values. */ static DECLCALLBACK(int) vnetIoCb_Reset(PPDMDEVINS pDevIns) { #ifndef IN_RING3 RT_NOREF(pDevIns); return VINF_IOM_R3_IOPORT_WRITE; #else PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); Log(("%s Reset triggered\n", INSTANCE(pThis))); int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY); if (RT_UNLIKELY(rc != VINF_SUCCESS)) { LogRel(("vnetIoCb_Reset failed to enter RX critical section!\n")); return rc; } vpciReset(pDevIns, &pThis->VPCI); vnetCsRxLeave(pThis); /// @todo Implement reset if (vnetR3IsConnected(pDevIns)) pThis->config.uStatus = VNET_S_LINK_UP; else pThis->config.uStatus = 0; Log(("%s vnetIoCb_Reset: Link is %s\n", INSTANCE(pThis), vnetR3IsConnected(pDevIns) ? "up" : "down")); /* * By default we pass all packets up since the older guests cannot control * virtio mode. */ pThis->fPromiscuous = true; pThis->fAllMulti = false; pThis->cMacFilterEntries = 0; memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC)); memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter)); pThis->uIsTransmitting = 0; if (pThisCC->pDrv) pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, true); return VINF_SUCCESS; #endif } /** * Wakeup the RX thread. */ static void vnetWakeupReceive(PPDMDEVINS pDevIns) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); if ( pThis->fMaybeOutOfSpace && pThis->hEventMoreRxDescAvail != NIL_SUPSEMEVENT) { STAM_COUNTER_INC(&pThis->StatRxOverflowWakeup); Log(("%s Waking up Out-of-RX-space semaphore\n", INSTANCE(pThis))); int rc = PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hEventMoreRxDescAvail); AssertRC(rc); } } #ifdef IN_RING3 /** * Helper function that raises an interrupt if the guest is ready to receive it. */ static int vnetR3RaiseInterrupt(PPDMDEVINS pDevIns, PVNETSTATE pThis, int rcBusy, uint8_t u8IntCause) { if (pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK) return vpciRaiseInterrupt(pDevIns, &pThis->VPCI, rcBusy, u8IntCause); return rcBusy; } /** * Takes down the link temporarily if it's current status is up. * * This is used during restore and when replumbing the network link. * * The temporary link outage is supposed to indicate to the OS that all network * connections have been lost and that it for instance is appropriate to * renegotiate any DHCP lease. * * @param pDevIns The device instance. * @param pThis The virtio-net shared instance data. * @param pThisCC The virtio-net ring-3 instance data. */ static void vnetR3TempLinkDown(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC) { if (pThis->config.uStatus & VNET_S_LINK_UP) { pThis->config.uStatus &= ~VNET_S_LINK_UP; vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG); /* Restore the link back in 5 seconds. */ int rc = PDMDevHlpTimerSetMillies(pDevIns, pThisCC->hLinkUpTimer, pThis->cMsLinkUpDelay); AssertRC(rc); Log(("%s vnetR3TempLinkDown: Link is down temporarily\n", INSTANCE(pThis))); } } /** * @callback_method_impl{FNTMTIMERDEV, Link Up Timer handler.} */ static DECLCALLBACK(void) vnetR3LinkUpTimer(PPDMDEVINS pDevIns, TMTIMERHANDLE hTimer, void *pvUser) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); RT_NOREF(hTimer, pvUser); VNET_R3_CS_ENTER_RETURN_VOID(pDevIns, pThis); Log(("%s vnetR3LinkUpTimer: connected=%s\n", INSTANCE(pThis), vnetR3IsConnected(pDevIns)?"true":"false")); /* Do not bring up the link if the device is not connected. */ if (vnetR3IsConnected(pDevIns)) { pThis->config.uStatus |= VNET_S_LINK_UP; vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG); vnetWakeupReceive(pDevIns); } vnetR3CsLeave(pDevIns, pThis); Log(("%s vnetR3LinkUpTimer: Link is up\n", INSTANCE(pThis))); if (pThisCC->pDrv) pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, PDMNETWORKLINKSTATE_UP); } #endif /* IN_RING3 */ /** * @interface_method_impl{VPCIIOCALLBACKS,pfnReady} * * This function is called when the driver becomes ready. */ static DECLCALLBACK(void) vnetIoCb_Ready(PPDMDEVINS pDevIns) { Log(("%s Driver became ready, waking up RX thread...\n", INSTANCE(PDMDEVINS_2_DATA(pDevIns, PVNETSTATE)))); vnetWakeupReceive(pDevIns); } /** * I/O port callbacks. */ static const VPCIIOCALLBACKS g_IOCallbacks = { vnetIoCb_GetHostFeatures, vnetIoCb_GetHostMinimalFeatures, vnetIoCb_SetHostFeatures, vnetIoCb_GetConfig, vnetIoCb_SetConfig, vnetIoCb_Reset, vnetIoCb_Ready, }; /** * @callback_method_impl{FNIOMIOPORTNEWIN} */ static DECLCALLBACK(VBOXSTRICTRC) vnetIOPortIn(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t *pu32, unsigned cb) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); RT_NOREF(pvUser); return vpciIOPortIn(pDevIns, &pThis->VPCI, offPort, pu32, cb, &g_IOCallbacks); } /** * @callback_method_impl{FNIOMIOPORTNEWOUT} */ static DECLCALLBACK(VBOXSTRICTRC) vnetIOPortOut(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); RT_NOREF(pvUser); return vpciIOPortOut(pDevIns, &pThis->VPCI, &pThisCC->VPCI, offPort, u32, cb, &g_IOCallbacks); } #ifdef IN_RING3 /** * Check if the device can receive data now. * This must be called before the pfnRecieve() method is called. * * @remarks As a side effect this function enables queue notification * if it cannot receive because the queue is empty. * It disables notification if it can receive. * * @returns VERR_NET_NO_BUFFER_SPACE if it cannot. * @thread RX */ static int vnetR3CanReceive(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC) { int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY); AssertRCReturn(rc, rc); LogFlow(("%s vnetR3CanReceive\n", INSTANCE(pThis))); if (!(pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK)) rc = VERR_NET_NO_BUFFER_SPACE; else if (!vqueueIsReady(pThisCC->pRxQueue)) rc = VERR_NET_NO_BUFFER_SPACE; else if (vqueueIsEmpty(pDevIns, pThisCC->pRxQueue)) { vringSetNotification(pDevIns, &pThisCC->pRxQueue->VRing, true); rc = VERR_NET_NO_BUFFER_SPACE; } else { vringSetNotification(pDevIns, &pThisCC->pRxQueue->VRing, false); rc = VINF_SUCCESS; } LogFlow(("%s vnetR3CanReceive -> %Rrc\n", INSTANCE(pThis), rc)); vnetCsRxLeave(pThis); return rc; } /** * @interface_method_impl{PDMINETWORKDOWN,pfnWaitReceiveAvail} */ static DECLCALLBACK(int) vnetR3NetworkDown_WaitReceiveAvail(PPDMINETWORKDOWN pInterface, RTMSINTERVAL cMillies) { PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown); PPDMDEVINS pDevIns = pThisCC->pDevIns; PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); LogFlow(("%s vnetR3NetworkDown_WaitReceiveAvail(cMillies=%u)\n", INSTANCE(pThis), cMillies)); int rc = vnetR3CanReceive(pDevIns, pThis, pThisCC); if (RT_SUCCESS(rc)) return VINF_SUCCESS; if (cMillies == 0) return VERR_NET_NO_BUFFER_SPACE; rc = VERR_INTERRUPTED; ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, true); STAM_PROFILE_START(&pThis->StatRxOverflow, a); VMSTATE enmVMState; while (RT_LIKELY( (enmVMState = PDMDevHlpVMState(pDevIns)) == VMSTATE_RUNNING || enmVMState == VMSTATE_RUNNING_LS)) { int rc2 = vnetR3CanReceive(pDevIns, pThis, pThisCC); if (RT_SUCCESS(rc2)) { rc = VINF_SUCCESS; break; } Log(("%s vnetR3NetworkDown_WaitReceiveAvail: waiting cMillies=%u...\n", INSTANCE(pThis), cMillies)); rc2 = PDMDevHlpSUPSemEventWaitNoResume(pDevIns, pThis->hEventMoreRxDescAvail, cMillies); if (RT_FAILURE(rc2) && rc2 != VERR_TIMEOUT && rc2 != VERR_INTERRUPTED) RTThreadSleep(1); } STAM_PROFILE_STOP(&pThis->StatRxOverflow, a); ASMAtomicXchgBool(&pThis->fMaybeOutOfSpace, false); LogFlow(("%s vnetR3NetworkDown_WaitReceiveAvail -> %d\n", INSTANCE(pThis), rc)); return rc; } /** * @interface_method_impl{PDMIBASE,pfnQueryInterface, * For VNETSTATECC::VPCI.IBase} */ static DECLCALLBACK(void *) vnetQueryInterface(struct PDMIBASE *pInterface, const char *pszIID) { PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, VPCI.IBase); PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKDOWN, &pThisCC->INetworkDown); PDMIBASE_RETURN_INTERFACE(pszIID, PDMINETWORKCONFIG, &pThisCC->INetworkConfig); return vpciR3QueryInterface(&pThisCC->VPCI, pszIID); } /** * Returns true if it is a broadcast packet. * * @returns true if destination address indicates broadcast. * @param pvBuf The ethernet packet. */ DECLINLINE(bool) vnetR3IsBroadcast(const void *pvBuf) { static const uint8_t s_abBcastAddr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; return memcmp(pvBuf, s_abBcastAddr, sizeof(s_abBcastAddr)) == 0; } /** * Returns true if it is a multicast packet. * * @remarks returns true for broadcast packets as well. * @returns true if destination address indicates multicast. * @param pvBuf The ethernet packet. */ DECLINLINE(bool) vnetR3IsMulticast(const void *pvBuf) { return (*(char*)pvBuf) & 1; } /** * Determines if the packet is to be delivered to upper layer. * * @returns true if packet is intended for this node. * @param pThis Pointer to the state structure. * @param pvBuf The ethernet packet. * @param cb Number of bytes available in the packet. */ static bool vnetR3AddressFilter(PVNETSTATE pThis, const void *pvBuf, size_t cb) { if (pThis->fPromiscuous) return true; /* Ignore everything outside of our VLANs */ uint16_t *u16Ptr = (uint16_t*)pvBuf; /* Compare TPID with VLAN Ether Type */ if ( u16Ptr[6] == RT_H2BE_U16(0x8100) && !ASMBitTest(pThis->aVlanFilter, RT_BE2H_U16(u16Ptr[7]) & 0xFFF)) { Log4(("%s vnetR3AddressFilter: not our VLAN, returning false\n", INSTANCE(pThis))); return false; } if (vnetR3IsBroadcast(pvBuf)) return true; if (pThis->fAllMulti && vnetR3IsMulticast(pvBuf)) return true; if (!memcmp(pThis->config.mac.au8, pvBuf, sizeof(RTMAC))) return true; Log4(("%s vnetR3AddressFilter: %RTmac (conf) != %RTmac (dest)\n", INSTANCE(pThis), pThis->config.mac.au8, pvBuf)); for (unsigned i = 0; i < pThis->cMacFilterEntries; i++) if (!memcmp(&pThis->aMacFilter[i], pvBuf, sizeof(RTMAC))) return true; Log2(("%s vnetR3AddressFilter: failed all tests, returning false, packet dump follows:\n", INSTANCE(pThis))); vnetR3PacketDump(pThis, (const uint8_t *)pvBuf, cb, "<-- Incoming"); return false; } /** * Pad and store received packet. * * @remarks Make sure that the packet appears to upper layer as one coming * from real Ethernet: pad it and insert FCS. * * @returns VBox status code. * @param pDevIns The device instance. * @param pThis The virtio-net shared instance data. * @param pvBuf The available data. * @param cb Number of bytes available in the buffer. * @thread RX */ static int vnetR3HandleRxPacket(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC, const void *pvBuf, size_t cb, PCPDMNETWORKGSO pGso) { VNETHDRMRX Hdr; unsigned cbHdr; RTGCPHYS addrHdrMrx = 0; if (pGso) { Log2(("%s vnetR3HandleRxPacket: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n", INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2)); Hdr.Hdr.u8Flags = VNETHDR_F_NEEDS_CSUM; switch (pGso->u8Type) { case PDMNETWORKGSOTYPE_IPV4_TCP: Hdr.Hdr.u8GSOType = VNETHDR_GSO_TCPV4; Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETTCP, th_sum); break; case PDMNETWORKGSOTYPE_IPV6_TCP: Hdr.Hdr.u8GSOType = VNETHDR_GSO_TCPV6; Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETTCP, th_sum); break; case PDMNETWORKGSOTYPE_IPV4_UDP: Hdr.Hdr.u8GSOType = VNETHDR_GSO_UDP; Hdr.Hdr.u16CSumOffset = RT_OFFSETOF(RTNETUDP, uh_sum); break; default: return VERR_INVALID_PARAMETER; } Hdr.Hdr.u16HdrLen = pGso->cbHdrsTotal; Hdr.Hdr.u16GSOSize = pGso->cbMaxSeg; Hdr.Hdr.u16CSumStart = pGso->offHdr2; Hdr.u16NumBufs = 0; STAM_REL_COUNTER_INC(&pThis->StatReceiveGSO); } else { Hdr.Hdr.u8Flags = 0; Hdr.Hdr.u8GSOType = VNETHDR_GSO_NONE; Hdr.Hdr.u16HdrLen = 0; Hdr.Hdr.u16GSOSize = 0; Hdr.Hdr.u16CSumStart = 0; Hdr.Hdr.u16CSumOffset = 0; Hdr.u16NumBufs = 0; } if (vnetR3MergeableRxBuffers(pThis)) cbHdr = sizeof(VNETHDRMRX); else cbHdr = sizeof(VNETHDR); vnetR3PacketDump(pThis, (const uint8_t *)pvBuf, cb, "<-- Incoming"); unsigned int uOffset = 0; unsigned int nElem; for (nElem = 0; uOffset < cb; nElem++) { VQUEUEELEM elem; unsigned int nSeg = 0, uElemSize = 0, cbReserved = 0; if (!vqueueGet(pDevIns, &pThis->VPCI, pThisCC->pRxQueue, &elem)) { /* * @todo: It is possible to run out of RX buffers if only a few * were added and we received a big packet. */ Log(("%s vnetR3HandleRxPacket: Suddenly there is no space in receive queue!\n", INSTANCE(pThis))); return VERR_INTERNAL_ERROR; } if (elem.cIn < 1) { Log(("%s vnetR3HandleRxPacket: No writable descriptors in receive queue!\n", INSTANCE(pThis))); return VERR_INTERNAL_ERROR; } if (nElem == 0) { if (vnetR3MergeableRxBuffers(pThis)) { addrHdrMrx = elem.aSegsIn[nSeg].addr; cbReserved = cbHdr; } else { /* The very first segment of the very first element gets the header. */ if (elem.aSegsIn[nSeg].cb != sizeof(VNETHDR)) { Log(("%s vnetR3HandleRxPacket: The first descriptor does match the header size!\n", INSTANCE(pThis))); return VERR_INTERNAL_ERROR; } elem.aSegsIn[nSeg++].pv = &Hdr; } uElemSize += cbHdr; } while (nSeg < elem.cIn && uOffset < cb) { unsigned int uSize = (unsigned int)RT_MIN(elem.aSegsIn[nSeg].cb - (nSeg?0:cbReserved), cb - uOffset); elem.aSegsIn[nSeg++].pv = (uint8_t*)pvBuf + uOffset; uOffset += uSize; uElemSize += uSize; } STAM_PROFILE_START(&pThis->StatReceiveStore, a); vqueuePut(pDevIns, &pThis->VPCI, pThisCC->pRxQueue, &elem, uElemSize, cbReserved); STAM_PROFILE_STOP(&pThis->StatReceiveStore, a); if (!vnetR3MergeableRxBuffers(pThis)) break; cbReserved = 0; } if (vnetR3MergeableRxBuffers(pThis)) { Hdr.u16NumBufs = nElem; int rc = PDMDevHlpPCIPhysWrite(pDevIns, addrHdrMrx, &Hdr, sizeof(Hdr)); if (RT_FAILURE(rc)) { Log(("%s vnetR3HandleRxPacket: Failed to write merged RX buf header: %Rrc\n", INSTANCE(pThis), rc)); return rc; } } vqueueSync(pDevIns, &pThis->VPCI, pThisCC->pRxQueue); if (uOffset < cb) { Log(("%s vnetR3HandleRxPacket: Packet did not fit into RX queue (packet size=%u)!\n", INSTANCE(pThis), cb)); return VERR_TOO_MUCH_DATA; } return VINF_SUCCESS; } /** * @interface_method_impl{PDMINETWORKDOWN,pfnReceiveGso} */ static DECLCALLBACK(int) vnetR3NetworkDown_ReceiveGso(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb, PCPDMNETWORKGSO pGso) { PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown); PPDMDEVINS pDevIns = pThisCC->pDevIns; PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); if (pGso) { uint32_t uFeatures = pThis->VPCI.uGuestFeatures; switch (pGso->u8Type) { case PDMNETWORKGSOTYPE_IPV4_TCP: uFeatures &= VNET_F_GUEST_TSO4; break; case PDMNETWORKGSOTYPE_IPV6_TCP: uFeatures &= VNET_F_GUEST_TSO6; break; case PDMNETWORKGSOTYPE_IPV4_UDP: case PDMNETWORKGSOTYPE_IPV6_UDP: uFeatures &= VNET_F_GUEST_UFO; break; default: uFeatures = 0; break; } if (!uFeatures) { Log2(("%s vnetR3NetworkDown_ReceiveGso: GSO type (0x%x) not supported\n", INSTANCE(pThis), pGso->u8Type)); return VERR_NOT_SUPPORTED; } } Log2(("%s vnetR3NetworkDown_ReceiveGso: pvBuf=%p cb=%u pGso=%p\n", INSTANCE(pThis), pvBuf, cb, pGso)); int rc = vnetR3CanReceive(pDevIns, pThis, pThisCC); if (RT_FAILURE(rc)) return rc; /* Drop packets if VM is not running or cable is disconnected. */ VMSTATE enmVMState = PDMDevHlpVMState(pDevIns); if (( enmVMState != VMSTATE_RUNNING && enmVMState != VMSTATE_RUNNING_LS) || !(pThis->config.uStatus & VNET_S_LINK_UP)) return VINF_SUCCESS; STAM_PROFILE_START(&pThis->StatReceive, a); vpciR3SetReadLed(&pThis->VPCI, true); if (vnetR3AddressFilter(pThis, pvBuf, cb)) { rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY); if (RT_SUCCESS(rc)) { rc = vnetR3HandleRxPacket(pDevIns, pThis, pThisCC, pvBuf, cb, pGso); STAM_REL_COUNTER_ADD(&pThis->StatReceiveBytes, cb); vnetCsRxLeave(pThis); } } vpciR3SetReadLed(&pThis->VPCI, false); STAM_PROFILE_STOP(&pThis->StatReceive, a); return rc; } /** * @interface_method_impl{PDMINETWORKDOWN,pfnReceive} */ static DECLCALLBACK(int) vnetR3NetworkDown_Receive(PPDMINETWORKDOWN pInterface, const void *pvBuf, size_t cb) { return vnetR3NetworkDown_ReceiveGso(pInterface, pvBuf, cb, NULL); } /** * @interface_method_impl{PDMINETWORKCONFIG,pfnGetMac} */ static DECLCALLBACK(int) vnetR3NetworkConfig_GetMac(PPDMINETWORKCONFIG pInterface, PRTMAC pMac) { PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig); PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE); memcpy(pMac, pThis->config.mac.au8, sizeof(RTMAC)); return VINF_SUCCESS; } /** * @interface_method_impl{PDMINETWORKCONFIG,pfnGetLinkState} */ static DECLCALLBACK(PDMNETWORKLINKSTATE) vnetR3NetworkConfig_GetLinkState(PPDMINETWORKCONFIG pInterface) { PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig); PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE); if (pThis->config.uStatus & VNET_S_LINK_UP) return PDMNETWORKLINKSTATE_UP; return PDMNETWORKLINKSTATE_DOWN; } /** * @interface_method_impl{PDMINETWORKCONFIG,pfnSetLinkState} */ static DECLCALLBACK(int) vnetR3NetworkConfig_SetLinkState(PPDMINETWORKCONFIG pInterface, PDMNETWORKLINKSTATE enmState) { PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkConfig); PPDMDEVINS pDevIns = pThisCC->pDevIns; PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); bool fOldUp = !!(pThis->config.uStatus & VNET_S_LINK_UP); bool fNewUp = enmState == PDMNETWORKLINKSTATE_UP; Log(("%s vnetR3NetworkConfig_SetLinkState: enmState=%d\n", INSTANCE(pThis), enmState)); if (enmState == PDMNETWORKLINKSTATE_DOWN_RESUME) { if (fOldUp) { /* * We bother to bring the link down only if it was up previously. The UP link state * notification will be sent when the link actually goes up in vnetR3LinkUpTimer(). */ vnetR3TempLinkDown(pDevIns, pThis, pThisCC); if (pThisCC->pDrv) pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, enmState); } } else if (fNewUp != fOldUp) { if (fNewUp) { pThis->fCableConnected = true; /* The link state depends both on the cable connected and device attached. */ if (vnetR3IsConnected(pDevIns)) { Log(("%s Link is up\n", INSTANCE(pThis))); pThis->config.uStatus |= VNET_S_LINK_UP; vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG); } } else { /* The link was brought down explicitly, make sure it won't come up by timer. */ PDMDevHlpTimerStop(pDevIns, pThisCC->hLinkUpTimer); Log(("%s Link is down\n", INSTANCE(pThis))); pThis->fCableConnected = false; pThis->config.uStatus &= ~VNET_S_LINK_UP; vnetR3RaiseInterrupt(pDevIns, pThis, VERR_SEM_BUSY, VPCI_ISR_CONFIG); } if (pThisCC->pDrv) pThisCC->pDrv->pfnNotifyLinkChanged(pThisCC->pDrv, enmState); } return VINF_SUCCESS; } /** * @callback_method_impl{FNVPCIQUEUECALLBACK, The RX queue} */ static DECLCALLBACK(void) vnetR3QueueReceive(PPDMDEVINS pDevIns, PVQUEUE pQueue) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); RT_NOREF(pThis, pQueue); Log(("%s Receive buffers has been added, waking up receive thread.\n", INSTANCE(pThis))); vnetWakeupReceive(pDevIns); } /** * Sets up the GSO context according to the Virtio header. * * @param pGso The GSO context to setup. * @param pCtx The context descriptor. */ DECLINLINE(PPDMNETWORKGSO) vnetR3SetupGsoCtx(PPDMNETWORKGSO pGso, VNETHDR const *pHdr) { pGso->u8Type = PDMNETWORKGSOTYPE_INVALID; if (pHdr->u8GSOType & VNETHDR_GSO_ECN) { AssertMsgFailed(("Unsupported flag in virtio header: ECN\n")); return NULL; } switch (pHdr->u8GSOType & ~VNETHDR_GSO_ECN) { case VNETHDR_GSO_TCPV4: pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_TCP; pGso->cbHdrsSeg = pHdr->u16HdrLen; break; case VNETHDR_GSO_TCPV6: pGso->u8Type = PDMNETWORKGSOTYPE_IPV6_TCP; pGso->cbHdrsSeg = pHdr->u16HdrLen; break; case VNETHDR_GSO_UDP: pGso->u8Type = PDMNETWORKGSOTYPE_IPV4_UDP; pGso->cbHdrsSeg = pHdr->u16CSumStart; break; default: return NULL; } if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM) pGso->offHdr2 = pHdr->u16CSumStart; else { AssertMsgFailed(("GSO without checksum offloading!\n")); return NULL; } pGso->offHdr1 = sizeof(RTNETETHERHDR); pGso->cbHdrsTotal = pHdr->u16HdrLen; pGso->cbMaxSeg = pHdr->u16GSOSize; return pGso; } DECLINLINE(uint16_t) vnetR3CSum16(const void *pvBuf, size_t cb) { uint32_t csum = 0; uint16_t *pu16 = (uint16_t *)pvBuf; while (cb > 1) { csum += *pu16++; cb -= 2; } if (cb) csum += *(uint8_t*)pu16; while (csum >> 16) csum = (csum >> 16) + (csum & 0xFFFF); return ~csum; } DECLINLINE(void) vnetR3CompleteChecksum(uint8_t *pBuf, size_t cbSize, uint16_t uStart, uint16_t uOffset) { AssertReturnVoid(uStart < cbSize); AssertReturnVoid(uStart + uOffset + sizeof(uint16_t) <= cbSize); *(uint16_t *)(pBuf + uStart + uOffset) = vnetR3CSum16(pBuf + uStart, cbSize - uStart); } static bool vnetR3ReadHeader(PPDMDEVINS pDevIns, RTGCPHYS GCPhys, PVNETHDR pHdr, uint32_t cbMax) { int rc = PDMDevHlpPhysRead(pDevIns, GCPhys, pHdr, sizeof(*pHdr)); /** @todo r=bird: Why not PDMDevHlpPCIPhysRead? */ if (RT_FAILURE(rc)) return false; Log4(("virtio-net: header flags=%x gso-type=%x len=%x gso-size=%x csum-start=%x csum-offset=%x cb=%x\n", pHdr->u8Flags, pHdr->u8GSOType, pHdr->u16HdrLen, pHdr->u16GSOSize, pHdr->u16CSumStart, pHdr->u16CSumOffset, cbMax)); if (pHdr->u8GSOType) { uint32_t u32MinHdrSize; /* Segmentation offloading cannot be done without checksumming. */ if (RT_UNLIKELY(!(pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM))) return false; /* We do not support ECN. */ if (RT_UNLIKELY(pHdr->u8GSOType & VNETHDR_GSO_ECN)) return false; switch (pHdr->u8GSOType) { case VNETHDR_GSO_TCPV4: case VNETHDR_GSO_TCPV6: u32MinHdrSize = sizeof(RTNETTCP); break; case VNETHDR_GSO_UDP: u32MinHdrSize = 0; break; default: return false; } /* Header+MSS must not exceed the packet size. */ if (RT_UNLIKELY(u32MinHdrSize + pHdr->u16CSumStart + pHdr->u16GSOSize > cbMax)) return false; } /* Checksum must fit into the frame (validating both checksum fields). */ if ( (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM) && sizeof(uint16_t) + pHdr->u16CSumStart + pHdr->u16CSumOffset > cbMax) return false; Log4(("virtio-net: return true\n")); return true; } static int vnetR3TransmitFrame(PVNETSTATE pThis, PVNETSTATECC pThisCC, PPDMSCATTERGATHER pSgBuf, PPDMNETWORKGSO pGso, PVNETHDR pHdr) { vnetR3PacketDump(pThis, (uint8_t *)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, "--> Outgoing"); if (pGso) { /* Some guests (RHEL) may report HdrLen excluding transport layer header! */ /* * We cannot use cdHdrs provided by the guest because of different ways * it gets filled out by different versions of kernels. */ //if (pGso->cbHdrs < pHdr->u16CSumStart + pHdr->u16CSumOffset + 2) { Log4(("%s vnetR3TransmitPendingPackets: HdrLen before adjustment %d.\n", INSTANCE(pThis), pGso->cbHdrsTotal)); switch (pGso->u8Type) { case PDMNETWORKGSOTYPE_IPV4_TCP: case PDMNETWORKGSOTYPE_IPV6_TCP: pGso->cbHdrsTotal = pHdr->u16CSumStart + ((PRTNETTCP)(((uint8_t*)pSgBuf->aSegs[0].pvSeg) + pHdr->u16CSumStart))->th_off * 4; AssertMsgReturn(pSgBuf->cbUsed > pGso->cbHdrsTotal, ("cbHdrsTotal exceeds size of frame"), VERR_BUFFER_OVERFLOW); pGso->cbHdrsSeg = pGso->cbHdrsTotal; break; case PDMNETWORKGSOTYPE_IPV4_UDP: pGso->cbHdrsTotal = (uint8_t)(pHdr->u16CSumStart + sizeof(RTNETUDP)); pGso->cbHdrsSeg = pHdr->u16CSumStart; break; } /* Update GSO structure embedded into the frame */ ((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsTotal = pGso->cbHdrsTotal; ((PPDMNETWORKGSO)pSgBuf->pvUser)->cbHdrsSeg = pGso->cbHdrsSeg; Log4(("%s vnetR3TransmitPendingPackets: adjusted HdrLen to %d.\n", INSTANCE(pThis), pGso->cbHdrsTotal)); } Log2(("%s vnetR3TransmitPendingPackets: gso type=%x cbHdrsTotal=%u cbHdrsSeg=%u mss=%u off1=0x%x off2=0x%x\n", INSTANCE(pThis), pGso->u8Type, pGso->cbHdrsTotal, pGso->cbHdrsSeg, pGso->cbMaxSeg, pGso->offHdr1, pGso->offHdr2)); STAM_REL_COUNTER_INC(&pThis->StatTransmitGSO); } else if (pHdr->u8Flags & VNETHDR_F_NEEDS_CSUM) { STAM_REL_COUNTER_INC(&pThis->StatTransmitCSum); /* * This is not GSO frame but checksum offloading is requested. */ vnetR3CompleteChecksum((uint8_t*)pSgBuf->aSegs[0].pvSeg, pSgBuf->cbUsed, pHdr->u16CSumStart, pHdr->u16CSumOffset); } return pThisCC->pDrv->pfnSendBuf(pThisCC->pDrv, pSgBuf, false); } static void vnetR3TransmitPendingPackets(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC, PVQUEUE pQueue, bool fOnWorkerThread) { /* * Let's deal with the cases we are not going to transmit anything, * to avoid setting 'uIsTransmitting' on and off. */ if ((pThis->VPCI.uStatus & VPCI_STATUS_DRV_OK) == 0) { Log(("%s Ignoring transmit requests from non-existent driver (status=0x%x).\n", INSTANCE(pThis), pThis->VPCI.uStatus)); return; } if (!vnetR3IsConnected(pDevIns)) { Log(("%s Ignoring transmit requests while cable is disconnected.\n", INSTANCE(pThis))); return; } /* * Only one thread is allowed to transmit at a time, others should skip * transmission as the packets will be picked up by the transmitting * thread. */ if (!ASMAtomicCmpXchgU32(&pThis->uIsTransmitting, 1, 0)) return; PPDMINETWORKUP pDrv = pThisCC->pDrv; if (pDrv) { int rc = pDrv->pfnBeginXmit(pDrv, fOnWorkerThread); Assert(rc == VINF_SUCCESS || rc == VERR_TRY_AGAIN); if (rc == VERR_TRY_AGAIN) { ASMAtomicWriteU32(&pThis->uIsTransmitting, 0); return; } } unsigned int cbHdr; if (vnetR3MergeableRxBuffers(pThis)) cbHdr = sizeof(VNETHDRMRX); else cbHdr = sizeof(VNETHDR); Log3(("%s vnetR3TransmitPendingPackets: About to transmit %d pending packets\n", INSTANCE(pThis), vringReadAvailIndex(pDevIns, &pThisCC->pTxQueue->VRing) - pThisCC->pTxQueue->uNextAvailIndex)); vpciR3SetWriteLed(&pThis->VPCI, true); /* * Do not remove descriptors from available ring yet, try to allocate the * buffer first. */ VQUEUEELEM elem; /* This bugger is big! ~48KB on 64-bit hosts. */ while (vqueuePeek(pDevIns, &pThis->VPCI, pQueue, &elem)) { unsigned int uOffset = 0; if (elem.cOut < 2 || elem.aSegsOut[0].cb != cbHdr) { Log(("%s vnetR3QueueTransmit: The first segment is not the header! (%u < 2 || %u != %u).\n", INSTANCE(pThis), elem.cOut, elem.aSegsOut[0].cb, cbHdr)); break; /* For now we simply ignore the header, but it must be there anyway! */ } RT_UNTRUSTED_VALIDATED_FENCE(); VNETHDR Hdr; unsigned int uSize = 0; STAM_PROFILE_ADV_START(&pThis->StatTransmit, a); /* Compute total frame size. */ for (unsigned int i = 1; i < elem.cOut && uSize < VNET_MAX_FRAME_SIZE; i++) uSize += elem.aSegsOut[i].cb; Log5(("%s vnetR3TransmitPendingPackets: complete frame is %u bytes.\n", INSTANCE(pThis), uSize)); Assert(uSize <= VNET_MAX_FRAME_SIZE); /* Truncate oversized frames. */ if (uSize > VNET_MAX_FRAME_SIZE) uSize = VNET_MAX_FRAME_SIZE; if (pThisCC->pDrv && vnetR3ReadHeader(pDevIns, elem.aSegsOut[0].addr, &Hdr, uSize)) { RT_UNTRUSTED_VALIDATED_FENCE(); STAM_REL_COUNTER_INC(&pThis->StatTransmitPackets); STAM_PROFILE_START(&pThis->StatTransmitSend, a); PDMNETWORKGSO Gso; PDMNETWORKGSO *pGso = vnetR3SetupGsoCtx(&Gso, &Hdr); /** @todo Optimize away the extra copying! (lazy bird) */ PPDMSCATTERGATHER pSgBuf; int rc = pThisCC->pDrv->pfnAllocBuf(pThisCC->pDrv, uSize, pGso, &pSgBuf); if (RT_SUCCESS(rc)) { Assert(pSgBuf->cSegs == 1); pSgBuf->cbUsed = uSize; /* Assemble a complete frame. */ for (unsigned int i = 1; i < elem.cOut && uSize > 0; i++) { unsigned int cbSegment = RT_MIN(uSize, elem.aSegsOut[i].cb); PDMDevHlpPhysRead(pDevIns, elem.aSegsOut[i].addr, ((uint8_t*)pSgBuf->aSegs[0].pvSeg) + uOffset, cbSegment); uOffset += cbSegment; uSize -= cbSegment; } rc = vnetR3TransmitFrame(pThis, pThisCC, pSgBuf, pGso, &Hdr); } else { Log4(("virtio-net: failed to allocate SG buffer: size=%u rc=%Rrc\n", uSize, rc)); STAM_PROFILE_STOP(&pThis->StatTransmitSend, a); STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a); /* Stop trying to fetch TX descriptors until we get more bandwidth. */ break; } STAM_PROFILE_STOP(&pThis->StatTransmitSend, a); STAM_REL_COUNTER_ADD(&pThis->StatTransmitBytes, uOffset); } /* Remove this descriptor chain from the available ring */ vqueueSkip(pDevIns, &pThis->VPCI, pQueue); vqueuePut(pDevIns, &pThis->VPCI, pQueue, &elem, sizeof(VNETHDR) + uOffset); vqueueSync(pDevIns, &pThis->VPCI, pQueue); STAM_PROFILE_ADV_STOP(&pThis->StatTransmit, a); } vpciR3SetWriteLed(&pThis->VPCI, false); if (pDrv) pDrv->pfnEndXmit(pDrv); ASMAtomicWriteU32(&pThis->uIsTransmitting, 0); } /** * @interface_method_impl{PDMINETWORKDOWN,pfnXmitPending} */ static DECLCALLBACK(void) vnetR3NetworkDown_XmitPending(PPDMINETWORKDOWN pInterface) { PVNETSTATECC pThisCC = RT_FROM_MEMBER(pInterface, VNETSTATECC, INetworkDown); PPDMDEVINS pDevIns = pThisCC->pDevIns; PVNETSTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVNETSTATE); STAM_COUNTER_INC(&pThis->StatTransmitByNetwork); vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /*fOnWorkerThread*/); } # ifdef VNET_TX_DELAY /** * @callback_method_impl{FNVPCIQUEUECALLBACK, The TX queue} */ static DECLCALLBACK(void) vnetR3QueueTransmit(PPDMDEVINS pDevIns, PVQUEUE pQueue) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); if (PDMDevHlpTimerIsActive(pDevIns, pThis->hTxTimer)) { PDMDevHlpTimerStop(pDevIns, pThis->hTxTimer); Log3(("%s vnetR3QueueTransmit: Got kicked with notification disabled, re-enable notification and flush TX queue\n", INSTANCE(pThis))); vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pQueue, false /*fOnWorkerThread*/); VNET_R3_CS_ENTER_RETURN_VOID(pDevIns, pThis); vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true); vnetR3CsLeave(pDevIns, pThis); } else { VNET_R3_CS_ENTER_RETURN_VOID(pDevIns, pThis); vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, false); PDMDevHlpTimerSetMicro(pDevIns, pThis->hTxTimer, VNET_TX_DELAY); pThis->u64NanoTS = RTTimeNanoTS(); vnetR3CsLeave(pDevIns, pThis); } } /** * @callback_method_impl{FNTMTIMERDEV, Transmit Delay Timer handler.} */ static DECLCALLBACK(void) vnetR3TxTimer(PPDMDEVINS pDevIns, TMTIMERHANDLE hTimer, void *pvUser) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); RT_NOREF(hTimer, pvUser); uint32_t u32MicroDiff = (uint32_t)((RTTimeNanoTS() - pThis->u64NanoTS) / 1000); if (u32MicroDiff < pThis->u32MinDiff) pThis->u32MinDiff = u32MicroDiff; if (u32MicroDiff > pThis->u32MaxDiff) pThis->u32MaxDiff = u32MicroDiff; pThis->u32AvgDiff = (pThis->u32AvgDiff * pThis->u32i + u32MicroDiff) / (pThis->u32i + 1); pThis->u32i++; Log3(("vnetR3TxTimer: Expired, diff %9d usec, avg %9d usec, min %9d usec, max %9d usec\n", u32MicroDiff, pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff)); // Log3(("%s vnetR3TxTimer: Expired\n", INSTANCE(pThis))); vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /*fOnWorkerThread*/); VNET_R3_CS_ENTER_RETURN_VOID(pDevIns, pThis); vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true); vnetR3CsLeave(pDevIns, pThis); } DECLINLINE(int) vnetR3CreateTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC) { RT_NOREF(pDevIns, pThis, pThisCC); return VINF_SUCCESS; } DECLINLINE(void) vnetR3DestroyTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC) { RT_NOREF(pDevIns, pThis, pThisCC); } # else /* !VNET_TX_DELAY */ /** * @callback_method_impl{FNPDMTHREADDEV} */ static DECLCALLBACK(int) vnetR3TxThread(PPDMDEVINS pDevIns, PPDMTHREAD pThread) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); if (pThread->enmState == PDMTHREADSTATE_INITIALIZING) return VINF_SUCCESS; int rc = VINF_SUCCESS; while (pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = PDMDevHlpSUPSemEventWaitNoResume(pDevIns, pThis->hTxEvent, RT_INDEFINITE_WAIT); if (RT_UNLIKELY(pThread->enmState != PDMTHREADSTATE_RUNNING)) break; STAM_COUNTER_INC(&pThis->StatTransmitByThread); while (true) { vnetR3TransmitPendingPackets(pDevIns, pThis, pThisCC, pThisCC->pTxQueue, false /*fOnWorkerThread*/); /// @todo shouldn't it be true instead? Log(("vnetR3TxThread: enable kicking and get to sleep\n")); vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, true); /* * Break out of the loop if the device is not connected. Otherwise we will * end up in a tight loop, not being able to transmit, if there is something * in TX queue. See @bugref{10096}. */ if (vqueueIsEmpty(pDevIns, pThisCC->pTxQueue) || !vnetR3IsConnected(pDevIns)) break; vringSetNotification(pDevIns, &pThisCC->pTxQueue->VRing, false); } } return rc; } /** * @callback_method_impl{FNPDMTHREADWAKEUPDEV} */ static DECLCALLBACK(int) vnetR3TxThreadWakeUp(PPDMDEVINS pDevIns, PPDMTHREAD pThread) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); RT_NOREF(pThread); return PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTxEvent); } static int vnetR3CreateTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC) { int rc = PDMDevHlpSUPSemEventCreate(pDevIns, &pThis->hTxEvent); if (RT_SUCCESS(rc)) { rc = PDMDevHlpThreadCreate(pDevIns, &pThisCC->pTxThread, NULL, vnetR3TxThread, vnetR3TxThreadWakeUp, 0, RTTHREADTYPE_IO, INSTANCE(pThis)); if (RT_FAILURE(rc)) PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("VNET: Failed to create worker thread %s"), INSTANCE(pThis)); } else PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS, N_("VNET: Failed to create SUP event semaphore")); return rc; } static void vnetR3DestroyTxThreadAndEvent(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC) { if (pThisCC->pTxThread) { /* Destroy the thread. */ int rcThread; int rc = PDMDevHlpThreadDestroy(pDevIns, pThisCC->pTxThread, &rcThread); if (RT_FAILURE(rc) || RT_FAILURE(rcThread)) AssertMsgFailed(("%s Failed to destroy async IO thread rc=%Rrc rcThread=%Rrc\n", __FUNCTION__, rc, rcThread)); pThisCC->pTxThread = NULL; } if (pThis->hTxEvent != NIL_SUPSEMEVENT) { PDMDevHlpSUPSemEventClose(pDevIns, pThis->hTxEvent); pThis->hTxEvent = NIL_SUPSEMEVENT; } } /** * @callback_method_impl{FNVPCIQUEUECALLBACK, The TX queue} */ static DECLCALLBACK(void) vnetR3QueueTransmit(PPDMDEVINS pDevIns, PVQUEUE pQueue) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); Log(("vnetR3QueueTransmit: disable kicking and wake up TX thread\n")); vringSetNotification(pDevIns, &pQueue->VRing, false); int rc = PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hTxEvent); AssertRC(rc); } # endif /* !VNET_TX_DELAY */ static uint8_t vnetR3ControlRx(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETSTATECC pThisCC, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem) { uint8_t u8Ack = VNET_OK; uint8_t fOn, fDrvWasPromisc = pThis->fPromiscuous | pThis->fAllMulti; PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &fOn, sizeof(fOn)); Log(("%s vnetR3ControlRx: uCommand=%u fOn=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, fOn)); switch (pCtlHdr->u8Command) { case VNET_CTRL_CMD_RX_MODE_PROMISC: pThis->fPromiscuous = !!fOn; break; case VNET_CTRL_CMD_RX_MODE_ALLMULTI: pThis->fAllMulti = !!fOn; break; default: u8Ack = VNET_ERROR; } if (fDrvWasPromisc != (pThis->fPromiscuous | pThis->fAllMulti) && pThisCC->pDrv) pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, (pThis->fPromiscuous | pThis->fAllMulti)); return u8Ack; } static uint8_t vnetR3ControlMac(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem) { uint32_t nMacs = 0; if ( pCtlHdr->u8Command != VNET_CTRL_CMD_MAC_TABLE_SET || pElem->cOut != 3 || pElem->aSegsOut[1].cb < sizeof(nMacs) || pElem->aSegsOut[2].cb < sizeof(nMacs)) { Log(("%s vnetR3ControlMac: Segment layout is wrong (u8Command=%u nOut=%u cb1=%u cb2=%u)\n", INSTANCE(pThis), pCtlHdr->u8Command, pElem->cOut, pElem->aSegsOut[1].cb, pElem->aSegsOut[2].cb)); return VNET_ERROR; } /* Load unicast addresses */ PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &nMacs, sizeof(nMacs)); if (pElem->aSegsOut[1].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs)) { Log(("%s vnetR3ControlMac: The unicast mac segment is too small (nMacs=%u cb=%u)\n", INSTANCE(pThis), nMacs, pElem->aSegsOut[1].cb)); return VNET_ERROR; } if (nMacs > VNET_MAC_FILTER_LEN) { Log(("%s vnetR3ControlMac: MAC table is too big, have to use promiscuous mode (nMacs=%u)\n", INSTANCE(pThis), nMacs)); pThis->fPromiscuous = true; } else { if (nMacs) PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr + sizeof(nMacs), pThis->aMacFilter, nMacs * sizeof(RTMAC)); pThis->cMacFilterEntries = nMacs; #ifdef LOG_ENABLED Log(("%s vnetR3ControlMac: unicast macs:\n", INSTANCE(pThis))); for(unsigned i = 0; i < nMacs; i++) Log((" %RTmac\n", &pThis->aMacFilter[i])); #endif } /* Load multicast addresses */ PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[2].addr, &nMacs, sizeof(nMacs)); if (pElem->aSegsOut[2].cb < nMacs * sizeof(RTMAC) + sizeof(nMacs)) { Log(("%s vnetR3ControlMac: The multicast mac segment is too small (nMacs=%u cb=%u)\n", INSTANCE(pThis), nMacs, pElem->aSegsOut[2].cb)); return VNET_ERROR; } if (nMacs > VNET_MAC_FILTER_LEN - pThis->cMacFilterEntries) { Log(("%s vnetR3ControlMac: MAC table is too big, have to use allmulti mode (nMacs=%u)\n", INSTANCE(pThis), nMacs)); pThis->fAllMulti = true; } else { if (nMacs) PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[2].addr + sizeof(nMacs), &pThis->aMacFilter[pThis->cMacFilterEntries], nMacs * sizeof(RTMAC)); #ifdef LOG_ENABLED Log(("%s vnetR3ControlMac: multicast macs:\n", INSTANCE(pThis))); for(unsigned i = 0; i < nMacs; i++) Log((" %RTmac\n", &pThis->aMacFilter[i+pThis->cMacFilterEntries])); #endif pThis->cMacFilterEntries += nMacs; } return VNET_OK; } static uint8_t vnetR3ControlVlan(PPDMDEVINS pDevIns, PVNETSTATE pThis, PVNETCTLHDR pCtlHdr, PVQUEUEELEM pElem) { uint8_t u8Ack = VNET_OK; uint16_t u16Vid; if (pElem->cOut != 2 || pElem->aSegsOut[1].cb != sizeof(u16Vid)) { Log(("%s vnetR3ControlVlan: Segment layout is wrong (u8Command=%u nOut=%u cb=%u)\n", INSTANCE(pThis), pCtlHdr->u8Command, pElem->cOut, pElem->aSegsOut[1].cb)); return VNET_ERROR; } PDMDevHlpPhysRead(pDevIns, pElem->aSegsOut[1].addr, &u16Vid, sizeof(u16Vid)); if (u16Vid >= VNET_MAX_VID) { Log(("%s vnetR3ControlVlan: VLAN ID is out of range (VID=%u)\n", INSTANCE(pThis), u16Vid)); return VNET_ERROR; } Log(("%s vnetR3ControlVlan: uCommand=%u VID=%u\n", INSTANCE(pThis), pCtlHdr->u8Command, u16Vid)); switch (pCtlHdr->u8Command) { case VNET_CTRL_CMD_VLAN_ADD: ASMBitSet(pThis->aVlanFilter, u16Vid); break; case VNET_CTRL_CMD_VLAN_DEL: ASMBitClear(pThis->aVlanFilter, u16Vid); break; default: u8Ack = VNET_ERROR; } return u8Ack; } /** * @callback_method_impl{FNVPCIQUEUECALLBACK, The CLT queue} */ static DECLCALLBACK(void) vnetR3QueueControl(PPDMDEVINS pDevIns, PVQUEUE pQueue) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); VQUEUEELEM elem; while (vqueueGet(pDevIns, &pThis->VPCI, pQueue, &elem)) { if (elem.cOut < 1 || elem.aSegsOut[0].cb < sizeof(VNETCTLHDR)) { Log(("%s vnetR3QueueControl: The first 'out' segment is not the header! (%u < 1 || %u < %u).\n", INSTANCE(pThis), elem.cOut, elem.aSegsOut[0].cb,sizeof(VNETCTLHDR))); break; /* Skip the element and hope the next one is good. */ } if ( elem.cIn < 1 || elem.aSegsIn[elem.cIn - 1].cb < sizeof(VNETCTLACK)) { Log(("%s vnetR3QueueControl: The last 'in' segment is too small to hold the acknowledge! (%u < 1 || %u < %u).\n", INSTANCE(pThis), elem.cIn, elem.aSegsIn[elem.cIn - 1].cb, sizeof(VNETCTLACK))); break; /* Skip the element and hope the next one is good. */ } uint8_t bAck; VNETCTLHDR CtlHdr; PDMDevHlpPhysRead(pDevIns, elem.aSegsOut[0].addr, &CtlHdr, sizeof(CtlHdr)); switch (CtlHdr.u8Class) { case VNET_CTRL_CLS_RX_MODE: bAck = vnetR3ControlRx(pDevIns, pThis, pThisCC, &CtlHdr, &elem); break; case VNET_CTRL_CLS_MAC: bAck = vnetR3ControlMac(pDevIns, pThis, &CtlHdr, &elem); break; case VNET_CTRL_CLS_VLAN: bAck = vnetR3ControlVlan(pDevIns, pThis, &CtlHdr, &elem); break; default: bAck = VNET_ERROR; } Log(("%s Processed control message %u, ack=%u.\n", INSTANCE(pThis), CtlHdr.u8Class, bAck)); PDMDevHlpPCIPhysWrite(pDevIns, elem.aSegsIn[elem.cIn - 1].addr, &bAck, sizeof(bAck)); vqueuePut(pDevIns, &pThis->VPCI, pQueue, &elem, sizeof(bAck)); vqueueSync(pDevIns, &pThis->VPCI, pQueue); } } /* -=-=-=-=- Debug info item -=-=-=-=- */ /** * @callback_method_impl{FNDBGFINFOARGVDEV} */ static DECLCALLBACK(void) vnetR3Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, int cArgs, char **papszArgs) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); RT_NOREF(cArgs, papszArgs); vpciR3DumpStateWorker(&pThis->VPCI, pHlp); } /* -=-=-=-=- Saved state -=-=-=-=- */ /** * Saves the configuration. * * @param pDevIns The device instance. * @param pThis The VNET state. * @param pSSM The handle to the saved state. */ static void vnetR3SaveConfig(PPDMDEVINS pDevIns, PVNETSTATE pThis, PSSMHANDLE pSSM) { pDevIns->pHlpR3->pfnSSMPutMem(pSSM, &pThis->macConfigured, sizeof(pThis->macConfigured)); } /** * @callback_method_impl{FNSSMDEVLIVEEXEC} */ static DECLCALLBACK(int) vnetR3LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); RT_NOREF(uPass); vnetR3SaveConfig(pDevIns, pThis, pSSM); return VINF_SSM_DONT_CALL_AGAIN; } /** * @callback_method_impl{FNSSMDEVSAVEPREP} */ static DECLCALLBACK(int) vnetR3SavePrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); RT_NOREF(pSSM); int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY); if (RT_SUCCESS(rc)) vnetCsRxLeave(pThis); return rc; } /** * @callback_method_impl{FNSSMDEVSAVEEXEC} */ static DECLCALLBACK(int) vnetR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3; /* Save config first */ vnetR3SaveConfig(pDevIns, pThis, pSSM); /* Save the common part */ int rc = vpciR3SaveExec(pDevIns, pHlp, &pThis->VPCI, pSSM); AssertRCReturn(rc, rc); /* Save device-specific part */ pHlp->pfnSSMPutMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac)); pHlp->pfnSSMPutBool( pSSM, pThis->fPromiscuous); pHlp->pfnSSMPutBool( pSSM, pThis->fAllMulti); pHlp->pfnSSMPutU32( pSSM, pThis->cMacFilterEntries); pHlp->pfnSSMPutMem( pSSM, pThis->aMacFilter, pThis->cMacFilterEntries * sizeof(RTMAC)); rc = pHlp->pfnSSMPutMem(pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter)); AssertRCReturn(rc, rc); Log(("%s State has been saved\n", INSTANCE(pThis))); return VINF_SUCCESS; } /** * @callback_method_impl{FNSSMDEVLOADPREP, * Serializes the receive thread - it may be working inside the critsect. } */ static DECLCALLBACK(int) vnetR3LoadPrep(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); RT_NOREF(pSSM); int rc = vnetCsRxEnter(pThis, VERR_SEM_BUSY); if (RT_SUCCESS(rc)) vnetCsRxLeave(pThis); return rc; } /** * @callback_method_impl{FNSSMDEVLOADEXEC} */ static DECLCALLBACK(int) vnetR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3; /* config checks */ RTMAC macConfigured; int rc = pHlp->pfnSSMGetMem(pSSM, &macConfigured, sizeof(macConfigured)); AssertRCReturn(rc, rc); if (memcmp(&macConfigured, &pThis->macConfigured, sizeof(macConfigured)) && (uPass == 0 || !PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns))) LogRel(("%s: The mac address differs: config=%RTmac saved=%RTmac\n", INSTANCE(pThis), &pThis->macConfigured, &macConfigured)); rc = vpciR3LoadExec(pDevIns, pHlp, &pThis->VPCI, pSSM, uVersion, uPass, VNET_N_QUEUES); AssertRCReturn(rc, rc); if (uPass == SSM_PASS_FINAL) { rc = pHlp->pfnSSMGetMem( pSSM, pThis->config.mac.au8, sizeof(pThis->config.mac)); AssertRCReturn(rc, rc); if (uVersion > VIRTIO_SAVEDSTATE_VERSION_3_1_BETA1) { pHlp->pfnSSMGetBool(pSSM, &pThis->fPromiscuous); pHlp->pfnSSMGetBool(pSSM, &pThis->fAllMulti); pHlp->pfnSSMGetU32(pSSM, &pThis->cMacFilterEntries); pHlp->pfnSSMGetMem(pSSM, pThis->aMacFilter, pThis->cMacFilterEntries * sizeof(RTMAC)); /* Clear the rest. */ if (pThis->cMacFilterEntries < VNET_MAC_FILTER_LEN) memset(&pThis->aMacFilter[pThis->cMacFilterEntries], 0, (VNET_MAC_FILTER_LEN - pThis->cMacFilterEntries) * sizeof(RTMAC)); rc = pHlp->pfnSSMGetMem(pSSM, pThis->aVlanFilter, sizeof(pThis->aVlanFilter)); AssertRCReturn(rc, rc); } else { pThis->fPromiscuous = true; pThis->fAllMulti = false; pThis->cMacFilterEntries = 0; memset(pThis->aMacFilter, 0, VNET_MAC_FILTER_LEN * sizeof(RTMAC)); memset(pThis->aVlanFilter, 0, sizeof(pThis->aVlanFilter)); if (pThisCC->pDrv) pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, true); } } Log(("%s State has been restored\n", INSTANCE(pThis))); return rc; } /** * @callback_method_impl{FNSSMDEVLOADDONE, Link status adjustments after * loading.} */ static DECLCALLBACK(int) vnetR3LoadDone(PPDMDEVINS pDevIns, PSSMHANDLE pSSM) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); RT_NOREF(pSSM); if (pThisCC->pDrv) pThisCC->pDrv->pfnSetPromiscuousMode(pThisCC->pDrv, (pThis->fPromiscuous | pThis->fAllMulti)); /* * Indicate link down to the guest OS that all network connections have * been lost, unless we've been teleported here. */ if (!PDMDevHlpVMTeleportedAndNotFullyResumedYet(pDevIns)) { /* * Since we do not restore the link state, we pretend it is up, so it will be * lowered by vnetR3TempLinkDown, and the guest will be notified. The actual state * of the link will be determined later by vnetR3IsConnected in vnetR3LinkUpTimer. * See @bugref{10096}. */ pThis->config.uStatus |= VNET_S_LINK_UP; vnetR3TempLinkDown(pDevIns, pThis, pThisCC); } return VINF_SUCCESS; } /* -=-=-=-=- PDMDEVREG -=-=-=-=- */ /** * @interface_method_impl{PDMDEVREGR3,pfnDetach} */ static DECLCALLBACK(void) vnetR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); Log(("%s vnetR3Detach:\n", INSTANCE(pThis))); RT_NOREF(fFlags); AssertLogRelReturnVoid(iLUN == 0); VNET_R3_CS_ENTER_RETURN_VOID(pDevIns, pThis); vnetR3DestroyTxThreadAndEvent(pDevIns, pThis, pThisCC); /* * Zero important members. */ pThisCC->pDrvBase = NULL; pThisCC->pDrv = NULL; vnetR3CsLeave(pDevIns, pThis); } /** * @interface_method_impl{PDMDEVREGR3,pfnAttach} */ static DECLCALLBACK(int) vnetR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags) { PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); RT_NOREF(fFlags); LogFlow(("%s vnetR3Attach:\n", INSTANCE(pThis))); AssertLogRelReturn(iLUN == 0, VERR_PDM_NO_SUCH_LUN); int rc = vnetR3CsEnter(pDevIns, pThis, VERR_SEM_BUSY); AssertRCReturn(rc, rc); /* * Attach the driver. */ rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThisCC->VPCI.IBase, &pThisCC->pDrvBase, "Network Port"); if (RT_SUCCESS(rc)) { pThisCC->pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->pDrvBase, PDMINETWORKUP); AssertMsgStmt(pThisCC->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"), rc = VERR_PDM_MISSING_INTERFACE_BELOW); vnetR3CreateTxThreadAndEvent(pDevIns, pThis, pThisCC); } else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME) { /* This should never happen because this function is not called * if there is no driver to attach! */ Log(("%s No attached driver!\n", INSTANCE(pThis))); } /* * Temporary set the link down if it was up so that the guest * will know that we have change the configuration of the * network card */ if (RT_SUCCESS(rc)) vnetR3TempLinkDown(pDevIns, pThis, pThisCC); vnetR3CsLeave(pDevIns, pThis); return rc; } /** * @interface_method_impl{PDMDEVREGR3,pfnSuspend} */ static DECLCALLBACK(void) vnetR3Suspend(PPDMDEVINS pDevIns) { /* Poke thread waiting for buffer space. */ vnetWakeupReceive(pDevIns); } /** * @interface_method_impl{PDMDEVREGR3,pfnPowerOff} */ static DECLCALLBACK(void) vnetR3PowerOff(PPDMDEVINS pDevIns) { /* Poke thread waiting for buffer space. */ vnetWakeupReceive(pDevIns); } /** * @interface_method_impl{PDMDEVREGR3,pfnDestruct} */ static DECLCALLBACK(int) vnetR3Destruct(PPDMDEVINS pDevIns) { PDMDEV_CHECK_VERSIONS_RETURN_QUIET(pDevIns); PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); # ifdef VNET_TX_DELAY LogRel(("TxTimer stats (avg/min/max): %7d usec %7d usec %7d usec\n", pThis->u32AvgDiff, pThis->u32MinDiff, pThis->u32MaxDiff)); # endif Log(("%s Destroying instance\n", INSTANCE(pThis))); if (pThis->hEventMoreRxDescAvail != NIL_SUPSEMEVENT) { PDMDevHlpSUPSemEventSignal(pDevIns, pThis->hEventMoreRxDescAvail); PDMDevHlpSUPSemEventClose(pDevIns, pThis->hEventMoreRxDescAvail); pThis->hEventMoreRxDescAvail = NIL_SUPSEMEVENT; } // if (PDMCritSectIsInitialized(&pThis->csRx)) // PDMR3CritSectDelete(&pThis->csRx); return vpciR3Term(pDevIns, &pThis->VPCI); } /** * @interface_method_impl{PDMDEVREGR3,pfnConstruct} */ static DECLCALLBACK(int) vnetR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg) { PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3; int rc; /* * Initialize the instance data suffiencently for the destructor not to blow up. */ RTStrPrintf(pThis->VPCI.szInstance, sizeof(pThis->VPCI.szInstance), "VNet%d", iInstance); pThisCC->pDevIns = pDevIns; pThis->hEventMoreRxDescAvail = NIL_SUPSEMEVENT; # ifndef VNET_TX_DELAY pThis->hTxEvent = NIL_SUPSEMEVENT; pThisCC->pTxThread = NULL; # endif /* Initialize state structure */ pThis->u32PktNo = 1; /* Interfaces */ pThisCC->INetworkDown.pfnWaitReceiveAvail = vnetR3NetworkDown_WaitReceiveAvail; pThisCC->INetworkDown.pfnReceive = vnetR3NetworkDown_Receive; pThisCC->INetworkDown.pfnReceiveGso = vnetR3NetworkDown_ReceiveGso; pThisCC->INetworkDown.pfnXmitPending = vnetR3NetworkDown_XmitPending; pThisCC->INetworkConfig.pfnGetMac = vnetR3NetworkConfig_GetMac; pThisCC->INetworkConfig.pfnGetLinkState = vnetR3NetworkConfig_GetLinkState; pThisCC->INetworkConfig.pfnSetLinkState = vnetR3NetworkConfig_SetLinkState; /* Do our own locking. */ rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns)); AssertRCReturn(rc, rc); /* * Initialize VPCI part. */ pThisCC->VPCI.IBase.pfnQueryInterface = vnetQueryInterface; rc = vpciR3Init(pDevIns, &pThis->VPCI, &pThisCC->VPCI, VIRTIO_NET_ID, VNET_PCI_CLASS, VNET_N_QUEUES); AssertRCReturn(rc, rc); pThisCC->pRxQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 256, vnetR3QueueReceive, "RX "); pThisCC->pTxQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 256, vnetR3QueueTransmit, "TX "); pThisCC->pCtlQueue = vpciR3AddQueue(&pThis->VPCI, &pThisCC->VPCI, 16, vnetR3QueueControl, "CTL"); AssertLogRelReturn(pThisCC->pCtlQueue && pThisCC->pTxQueue && pThisCC->pRxQueue, VERR_INTERNAL_ERROR_5); Log(("%s Constructing new instance\n", INSTANCE(pThis))); /* * Validate configuration. */ PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "MAC|CableConnected|LineSpeed|LinkUpDelay|StatNo", ""); /* Get config params */ rc = pHlp->pfnCFGMQueryBytes(pCfg, "MAC", pThis->macConfigured.au8, sizeof(pThis->macConfigured)); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get MAC address")); rc = pHlp->pfnCFGMQueryBool(pCfg, "CableConnected", &pThis->fCableConnected); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the value of 'CableConnected'")); rc = pHlp->pfnCFGMQueryU32Def(pCfg, "LinkUpDelay", &pThis->cMsLinkUpDelay, 5000); /* ms */ if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the value of 'LinkUpDelay'")); Assert(pThis->cMsLinkUpDelay <= 300000); /* less than 5 minutes */ if (pThis->cMsLinkUpDelay > 5000 || pThis->cMsLinkUpDelay < 100) LogRel(("%s WARNING! Link up delay is set to %u seconds!\n", INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000)); Log(("%s Link up delay is set to %u seconds\n", INSTANCE(pThis), pThis->cMsLinkUpDelay / 1000)); uint32_t uStatNo = iInstance; rc = pHlp->pfnCFGMQueryU32Def(pCfg, "StatNo", &uStatNo, iInstance); if (RT_FAILURE(rc)) return PDMDEV_SET_ERROR(pDevIns, rc, N_("Configuration error: Failed to get the \"StatNo\" value")); vnetPrintFeatures(pThis, vnetIoCb_GetHostFeatures(&pThis->VPCI), "Device supports the following features"); /* Initialize PCI config space */ memcpy(pThis->config.mac.au8, pThis->macConfigured.au8, sizeof(pThis->config.mac.au8)); pThis->config.uStatus = 0; /* Initialize critical section. */ // char szTmp[sizeof(pThis->VPCI.szInstance) + 2]; // RTStrPrintf(szTmp, sizeof(szTmp), "%sRX", pThis->VPCI.szInstance); // rc = PDMDevHlpCritSectInit(pDevIns, &pThis->csRx, szTmp); // if (RT_FAILURE(rc)) // return rc; /* Map our ports to IO space. */ rc = PDMDevHlpPCIIORegionCreateIo(pDevIns, 0 /*iPciReion*/, VPCI_CONFIG + sizeof(VNetPCIConfig), vnetIOPortOut, vnetIOPortIn, NULL /*pvUser*/, "VirtioNet", NULL /*paExtDescs*/, &pThis->hIoPorts); AssertRCReturn(rc, rc); /* Register save/restore state handlers. */ rc = PDMDevHlpSSMRegisterEx(pDevIns, VIRTIO_SAVEDSTATE_VERSION, sizeof(VNETSTATE), NULL, NULL, vnetR3LiveExec, NULL, vnetR3SavePrep, vnetR3SaveExec, NULL, vnetR3LoadPrep, vnetR3LoadExec, vnetR3LoadDone); AssertRCReturn(rc, rc); /* Create Link Up Timer */ rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetR3LinkUpTimer, NULL, TMTIMER_FLAGS_NO_CRIT_SECT | TMTIMER_FLAGS_NO_RING0, "VirtioNet Link Up", &pThisCC->hLinkUpTimer); AssertRCReturn(rc, rc); # ifdef VNET_TX_DELAY /* Create Transmit Delay Timer */ rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, vnetR3TxTimer, pThis, TMTIMER_FLAGS_NO_CRIT_SECT | TMTIMER_FLAGS_NO_RING0, "VirtioNet TX Delay", &pThis->hTxTimer); AssertRCReturn(rc, rc); pThis->u32i = pThis->u32AvgDiff = pThis->u32MaxDiff = 0; pThis->u32MinDiff = UINT32_MAX; # endif /* VNET_TX_DELAY */ rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThisCC->VPCI.IBase, &pThisCC->pDrvBase, "Network Port"); if (RT_SUCCESS(rc)) { pThisCC->pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->pDrvBase, PDMINETWORKUP); AssertMsgReturn(pThisCC->pDrv, ("Failed to obtain the PDMINETWORKUP interface!\n"), VERR_PDM_MISSING_INTERFACE_BELOW); vnetR3CreateTxThreadAndEvent(pDevIns, pThis, pThisCC); } else if ( rc == VERR_PDM_NO_ATTACHED_DRIVER || rc == VERR_PDM_CFG_MISSING_DRIVER_NAME ) { /* No error! */ Log(("%s This adapter is not attached to any network!\n", INSTANCE(pThis))); } else return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to attach the network LUN")); rc = PDMDevHlpSUPSemEventCreate(pDevIns, &pThis->hEventMoreRxDescAvail); AssertRCReturn(rc, rc); ASMCompilerBarrier(); /* paranoia */ rc = vnetIoCb_Reset(pDevIns); AssertRCReturn(rc, rc); /* * Statistics and debug stuff. * The /Public/ bits are official and used by session info in the GUI. */ PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data received", "/Public/NetAdapter/%u/BytesReceived", uStatNo); PDMDevHlpSTAMRegisterF(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Amount of data transmitted", "/Public/NetAdapter/%u/BytesTransmitted", uStatNo); PDMDevHlpSTAMRegisterF(pDevIns, &pDevIns->iInstance, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_NONE, "Device instance number", "/Public/NetAdapter/%u/%s", uStatNo, pDevIns->pReg->szName); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveBytes, STAMTYPE_COUNTER, "ReceiveBytes", STAMUNIT_BYTES, "Amount of data received"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitBytes, STAMTYPE_COUNTER, "TransmitBytes", STAMUNIT_BYTES, "Amount of data transmitted"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveGSO, STAMTYPE_COUNTER, "Packets/ReceiveGSO", STAMUNIT_COUNT, "Number of received GSO packets"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitPackets, STAMTYPE_COUNTER, "Packets/Transmit", STAMUNIT_COUNT, "Number of sent packets"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitGSO, STAMTYPE_COUNTER, "Packets/Transmit-Gso", STAMUNIT_COUNT, "Number of sent GSO packets"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitCSum, STAMTYPE_COUNTER, "Packets/Transmit-Csum", STAMUNIT_COUNT, "Number of completed TX checksums"); # ifdef VBOX_WITH_STATISTICS PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceive, STAMTYPE_PROFILE, "Receive/Total", STAMUNIT_TICKS_PER_CALL, "Profiling receive"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatReceiveStore, STAMTYPE_PROFILE, "Receive/Store", STAMUNIT_TICKS_PER_CALL, "Profiling receive storing"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRxOverflow, STAMTYPE_PROFILE, "RxOverflow", STAMUNIT_TICKS_PER_OCCURENCE, "Profiling RX overflows"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRxOverflowWakeup, STAMTYPE_COUNTER, "RxOverflowWakeup", STAMUNIT_OCCURENCES, "Nr of RX overflow wakeups"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmit, STAMTYPE_PROFILE, "Transmit/Total", STAMUNIT_TICKS_PER_CALL, "Profiling transmits in HC"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitSend, STAMTYPE_PROFILE, "Transmit/Send", STAMUNIT_TICKS_PER_CALL, "Profiling send transmit in HC"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitByNetwork, STAMTYPE_COUNTER, "Transmit/ByNetwork", STAMUNIT_COUNT, "Network-initiated transmissions"); PDMDevHlpSTAMRegister(pDevIns, &pThis->StatTransmitByThread, STAMTYPE_COUNTER, "Transmit/ByThread", STAMUNIT_COUNT, "Thread-initiated transmissions"); # endif char szInfo[16]; RTStrPrintf(szInfo, sizeof(szInfo), pDevIns->iInstance ? "vionet%u" : "vionet", pDevIns->iInstance); PDMDevHlpDBGFInfoRegisterArgv(pDevIns, szInfo, "virtio-net info", vnetR3Info); return VINF_SUCCESS; } #else /* !IN_RING3 */ /** * @callback_method_impl{PDMDEVREGR0,pfnConstruct} */ static DECLCALLBACK(int) vnetRZConstruct(PPDMDEVINS pDevIns) { PDMDEV_CHECK_VERSIONS_RETURN(pDevIns); PVNETSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PVNETSTATE); PVNETSTATECC pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PVNETSTATECC); int rc = PDMDevHlpSetDeviceCritSect(pDevIns, PDMDevHlpCritSectGetNop(pDevIns)); AssertRCReturn(rc, rc); rc = PDMDevHlpIoPortSetUpContext(pDevIns, pThis->hIoPorts, vnetIOPortOut, vnetIOPortIn, NULL /*pvUser*/); AssertRCReturn(rc, rc); return vpciRZInit(pDevIns, &pThis->VPCI, &pThisCC->VPCI); } #endif /* !IN_RING3 */ /** * The device registration structure. */ const PDMDEVREG g_DeviceVirtioNet = { /* .u32version = */ PDM_DEVREG_VERSION, /* .uReserved0 = */ 0, /* .szName = */ "virtio-net", /* .fFlags = */ PDM_DEVREG_FLAGS_DEFAULT_BITS | PDM_DEVREG_FLAGS_RZ | PDM_DEVREG_FLAGS_NEW_STYLE, /* .fClass = */ PDM_DEVREG_CLASS_NETWORK, /* .cMaxInstances = */ ~0U, /* .uSharedVersion = */ 42, /* .cbInstanceShared = */ sizeof(VNETSTATE), /* .cbInstanceCC = */ sizeof(VNETSTATECC), /* .cbInstanceRC = */ sizeof(VNETSTATERC), /* .cMaxPciDevices = */ 1, /* .cMaxMsixVectors = */ 0, /* .pszDescription = */ "Virtio Ethernet.\n", #if defined(IN_RING3) /* .pszRCMod = */ "VBoxDDRC.rc", /* .pszR0Mod = */ "VBoxDDR0.r0", /* .pfnConstruct = */ vnetR3Construct, /* .pfnDestruct = */ vnetR3Destruct, /* .pfnRelocate = */ NULL, /* .pfnMemSetup = */ NULL, /* .pfnPowerOn = */ NULL, /* .pfnReset = */ NULL, /* .pfnSuspend = */ vnetR3Suspend, /* .pfnResume = */ NULL, /* .pfnAttach = */ vnetR3Attach, /* .pfnDetach = */ vnetR3Detach, /* .pfnQueryInterface = */ NULL, /* .pfnInitComplete = */ NULL, /* .pfnPowerOff = */ vnetR3PowerOff, /* .pfnSoftReset = */ NULL, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #elif defined(IN_RING0) /* .pfnEarlyConstruct = */ NULL, /* .pfnConstruct = */ vnetRZConstruct, /* .pfnDestruct = */ NULL, /* .pfnFinalDestruct = */ NULL, /* .pfnRequest = */ NULL, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #elif defined(IN_RC) /* .pfnConstruct = */ vnetRZConstruct, /* .pfnReserved0 = */ NULL, /* .pfnReserved1 = */ NULL, /* .pfnReserved2 = */ NULL, /* .pfnReserved3 = */ NULL, /* .pfnReserved4 = */ NULL, /* .pfnReserved5 = */ NULL, /* .pfnReserved6 = */ NULL, /* .pfnReserved7 = */ NULL, #else # error "Not in IN_RING3, IN_RING0 or IN_RC!" #endif /* .u32VersionEnd = */ PDM_DEVREG_VERSION }; #endif /* !VBOX_DEVICE_STRUCT_TESTCASE */