Mellanox WinOF VPI Release Notes
Contents
1. When VMQ is enabled after reset the driver loads all the VMQs that existed before the reset However it is not guaranteed that each VMQ will receive the same QP num ber it had before the reset This can cause some delay as a result of resetting before connectivity is reestablished The delay is caused by the time it takes for the ARP table to update after initiating the Gratuitous ARP The IPoIB non VMQ mode is supported only when the To use the non VMQ mode VMQ is enabled according to the registry values for a VM change its settings as follow e Press Settings on the VM Goto Network Adapter gt Hardware Acceleration e Un check the Enable vir tual machine queue Installation Upgrading the driver while the UI is opened with the Close the UI before driver Upgrade ConnectX NIC device may cause the installation process upgrade to never end 28 Mellanox Technologies Rev 4 70 Table 10 WinOF Known Issues Sheet 10 of 13 Category Description Rebooting the machine reboot while uninstalling WinOF may result in installation failure Workaround Delete Mellanox components from HKEY LOCAL MACHINE SOF TWARE Microsoft Win dows CurrentVer sion DIFxApp Component S The Mellanox components are mlx4eth63 ipoib6x and mlx4 bus Canceling the installation process may leave the bus driver in a disable state The driver appears in a yellow bang con tai2. for ConnectX 3 MLX4 ConnectX 3_Eth and IBA ConnectX 3_IPoIB Set QoS settings only for ConnectX 3 Changing the hardware ID forces the OS to install new device and re build the registry keys Added an event log to indicate driver failure upon start if there are two HCA burned with the same GUID Added firmware upgrade support as part of the setup process The setup burns the new firmware only on Mellanox cards Firmware burning failure does not prevent the driver s installation therefore it will show a warning In this case it is recommended to update the firmware manually Enabled configuration of TxRingNum registry key from the UI Improved the Port Protocol dialog Added Registry key documentation to the setup package Performance Optimized code performance Increased send parallelism Memory used in receive flow is now allocated with the same affinity of the handling processor for faster access Statistics parameters are now directly read from hardware instead of being cal culated by software e Added support for BlueFlame BlueFlame is now the default working mode for all packets that have a descriptor which fits into a BF register currently 256 bytes Use BlueFlame registry key to enable disable this feature e Added support for RSS functionality on available processors numbers Used to be restricted to start at the first processor Changed RSS registry defaults to give better out of the box
3. Table 3 New Features Changes and Fixes in v4 60 17738 Category Description IPoIB Fixed using CQ after VMQ is closed Fixed bad completion of VMQ QP that was caused by malformed WR Ethernet LBFO Fixed the team s MAC address uniqueness in the subnet of the team in Windows 2008 R2 2 3 2 New Features Changes and Fixes in Version 4 60 17718 from Version 4 55 This package version 1s 4 60 17718 The package contains the following versions of components Bus eth IPoIB and mux drivers version is 4 60 17718 The CIM provider version is 4 60 17718 Table 4 New Features Changes and Fixes in v4 60 17718 Category Description Installation Upgrade Enabled configuration changes saving upon Inbox and previous releases upgrade Enabled CIM installation as a standalone package e Fixed an issue occurred when uninstalling and reinstalling the driver The Con nectX 3 Pro Ethernet device was displayed in the Device Manager with a yel low bang e Fixed an issues enabling the package s execution in modify mode resulting in driver being disabled Generic Fixed random parsing failures of string registry entries Fixed compilation failure of Hello world in the SDK Fixed the return value of ib query ca if failed to allocate resources for opera tion Mellanox Technologies 9 J Rev 4 70 Changes and Major New Features Table 4 New Features Changes and Fixes in v4 6
4. GetConnectionData Network Direct Fixed disallowing creation of EndPoint with zero attributes in the Receive Queue Network Direct Removed the option of NDK registration failure requiring a reboot of the machine to register it again Network Direct Fixed a failure when creating an EndPoint with zero attributes in the Receive Queue e Network Direct Added the option of sensing the incoming Read messages according to the device capabilities when creating an EndPoint limit e Network Direct Fixed a failure of ND connectivity between VMs on the same host InfiniBand Onrare occasions depends on the GUID assignment the IPoIB MAC address can be assigned with a multicast MAC the least significant bit of the most sig nificant address octet is set to 1 In that case all of the traffic over the IPoIB I F is dropped If you experience this issue please contact Mellanox support Addedactive mtu fieldtostruct ib port attr t Added the option of vstat displaying the active mtu ofthe ports Allowed registration of a large Memory Region which is splitted to many seg ments Fixed a bluescreen issue that occurred when disabling the interface after a TX stress over the VMQ e Fixed a failure of MPI ND over InfiniBand e Added the option of ibv devinfo displaying the correct MTU value after it was changed Added the option of part man printing the adapter name when the Port GUID is set to zero Added the option of part
5. The following are the API changes in WinOF Rev 4 40 Table 14 API Changes in WinOF Rev 4 40 Name Description VERBS MINOR VER Increased its value 0009 gt 000a enum eth link speeds Added enumerated values struct ib port attr t The mtu field was separated into two fields max mtu maximum MTU supported by the port active mtu actual MTU which the port is configured with e Added the eth link speed field WR_SEND_INV Added enumerated values struct ib send wr t The type of invalidate rkey was changed from net32 t gt ib net32 t IB SEND OPT SKIP DOORBELL Added the send Write flag 34 Mellanox Technologies
6. additional functionality 1 1 Mellanox WinOF Rev 4 70 New Features Added support for the following Ethernet SR IOV over Windows Hyper V Hypervisor over Windows 2012 R2 Virtual Ethernet Adapter support over Windows 2012 and above e RoCEv2 RoCE over Layer 3 networks only for ConnectX 3 Pro Lossless TCP buffer management when no receive WQE are available IPoIB SR IOV over KVM Hypervisor Beta level 1 2 WinOF VPI Package Contents The Mellanox WinOF Rev 4 70 for Windows package contains the following components Core and ULPs IB HCA low level drivers mlx4 B Access Layer IBAL Ethernet driver ETH IP over InfiniBand IPoIB e NetworkDirect ND Mellanox LBFO driver for Windows 2008 R2 Utilities e OpenSM InfiniBand Subnet Manager is provided as a sample code The sample code is intended to allow users to test or bring up the InfiniBand fabric without a management console switch to get started For cluster production environments Mellanox s recommendation is to use a Managed Switch or the UFM SDN Appliance Low level performance tools InfiniBand Diagnostics tools Software Development Kit SDK Documentation 1 Requires firmware v2 30 8000 and above 2 Requires firmware v2 31 5050 and above Mellanox Technologies 5 Rev 4 70 Overview 1 3 Supported Operating Systems Versions Windows Server 2008 R2 64 bit only Virtual Machine OS Windows Serv
7. Fixed releasing of RDMA resources and reacquire them on power down and up Fixed RDMA Activity counters which didn t increase for ND traffic ND Fixed hard coded limitation of 4 SGEs InfiniBand Fixed vstat printing of counters for Ethernet ports Performance Improved perf tuning setting in single CPU machines to avoid TX collision Mellanox Technologies 7 Rev 4 70 Changes and Major New Features 2 2 New Features Changes and Fixes in Version 4 61 From Version 4 60 WinOF VPI version 4 61 was released as an intermediate release Ah Table 2 New Features Changes and Fixes in v4 61 Category Description Installation Upgrade Fixed an issue preventing JumboPackets registry key to be restored correctly Ensured that uninstallation of Mellanox package in Virtual Machine leaves the system clean Generic Improved information in event log when a bad cable is detected Improved resiliency on error flow in Ethernet IPoIB and bus drivers e Fixed an issue which caused Mellanox devices to be listed in Devices and Printers and had Safe Removal UI Performance e Added support OF IPv6 to all nd tests Enabled optimal interrupt moderation values in SR IOV VF mode Stopped using NdisQueryNetBufferPhysicalCount to improve CPU utilization IPoIB Enabled searching for IBAT routes based on dest only instead of src dest and added a mechanism preventing memory growth in IBAT entrie
8. Technologies Rev 4 70 Table 10 WinOF Known Issues Sheet 8 of 13 while the driver is disabled the device does not reacquire the static IP it had before the attachment of the vSwitch When the vSwitch is attached to the ETHMPoIB device while there is no link it will not receive the device IP when the link is back up Category Description Workaround Performance When using WinOF 4 40 or above low throughput will be Disable QoS when it is not in seen on 40GbE adapters when QoS is enabled use Open a PowerShell prompt Run Disable NetAdapter Qos name Inter face Name where Interface Name is e g Ethernet 1 perf tuning is supported only when one of the two NUMA nodes are in use Running performance benchmarks for a short period of Set Rx Interrupt Mod time lt 1 sec may provide bad latency in IPoIB and Ether eration Profile and net Tx Interrupt Modera tion Profile to Low Latency to avoid bad latency Note This may increase CPU utilization The driver uses optimal interrupt moderation values for 10 GbE SR IOV VF scenario For other scenarios the optimal values yet to be found Hyper v When the vSwitch is detached from the ETH IPoIB device After attaching the vSwitch to the ETH IPoIB device changing the Jumbo Packet registry key on the ETH IPoIB device does not affect the vSwitch configura tion and vice versa For example if the user sets
9. Version 4 3 Table 6 New Features Changes and Fixes in v4 40 Sheet 1 of 3 Category Description General e Added a notification in the event log in case SMB is not supported in Con nectX 2 firmware Added the trace tool for WPP tracing Added copyright to the SDK files Added WMI Powershell support e Fixed an issue causing the setup to fail upon perf tuning failure during the installation An error message will be printed in the installation log upon perf tuning failure Removed port setting registry key during uninstall Fixed and issue with the Mellanox adapter being shown on the USB removal menu which caused the removal of the Mellanox adapter once removing the USB Performance Set 512 RX buffers by default Removed TXRingNum Changed the perf tuning setting to achieve a better performance tuning Addedthend write bw nd write latandnd read bw nd read lat tools Fixedthe perf tuning indication of the last chosen tuning scenarios Fixedacrashinthe ib send lat bw utilities caused when the port link was down Fixed the Restore to defaults option in the perf tuning tool Now the default values are being restored 12 Mellanox Technologies Rev 4 70 Table 6 New Features Changes and Fixes in v4 40 Sheet 2 of 3 Category Description Ethernet Added Transmit Side Scaling TSS e Added Ethernet QoS proprietary counters diagnostics and traffic for monitor in
10. a reboot after it A firmware upgrade failure does not fail the whole installation Upgrade the firmware manu ally The drivers functionality is limited up to 1TB of memory and up to 128 cores Connection failure on ND tests while machine A have IBAL provider and machine B have MLX4ND provider Hibernate and Sleep are not functional when user space is using its resources Calling ib join mcast with timeout ms 0 may result in a BSOD IPoIB does not support MAC address change QoS packet priority Load balancing and fail over LBFO Connected Mode Partition Avoid calling this function with timeout ms 0 Memory registration on 32bit machines is limited to up to 256GB In an interoperability environment that has both Linux and Windows OSs the MTU value must be the same other wise packets larger than the minimum will not go through The default MTU for Linux is 2K and for Windows is 4K OpenSM does not run as a service during installation since the SM requires the GUID parameter to decide which port to work on Setting it on setup causes it to work only on the first port and not the others To run OpenSM as a service assuming the package was installed in the default path use SC create opensm bin Path c Program Files Mellanox MLNX VPI IB Tools open sm exe To start the service run sc start opensm Tools issues ibportstate does not work on RoCE ports i
11. longer supported e Removed the LsoV1IPv4 from the registry UI Removed from the bus driver configuration the Non DMA option Removed the TXRingNum option from the UI NVGRE e Added NVGRE hardware off load support e Added to the UI the EncapsulatedPacketTaskOffload option when using ConnectX 3 Pro NICs Performance e Added the nd send bwand nd send lat ND benchmarking tools e Fixed nd bw to achieve better performance memory buffer alignment and consistent results Mellanox Technologies 11 Rev 4 70 Changes and Major New Features Table 5 New Features Changes and Fixes in v4 55 Sheet 2 of 2 Category Description Ethernet Fixed the issue preventing messages to be sent in VLAN 0 when using many VMQ rings e Added IP IP checksum off load support Added Ports TX arbitration Bandwidth allocation per port The following ND providers MLX4ND and MLX4ND2 are installed by default Fixed setting the correct SL in UD traffic over RoCE InfiniBand IPoIB performance improvements e Fixed a part man issue related to wrong statistics over virtual partman inter faces RoCE Enabled roce mode value overwrite in case it exists during installation Fixed in ibv devinfo the display of correct transport RoCE mode Added Sniffer for RoCE packets The used RoCE mode set upon driver load is printed into event log message 2 5 New Features Changes and Fixes in Version 4 40 From
12. man printing the leading zeroes of port GUID Installation Upgrade Prevented displaying a message to upgrade the firmware for OEM NICs if it has the latest firmware version Removed portsetting registry key during uninstallation 14 Mellanox Technologies Rev 4 70 2 6 New Features Changes and Fixes in Version 4 3 From Version 4 2 WinOF VPI version 4 3 was released as an intermediate release Table 7 New Features Changes and Fixes in v4 3 Category Description General e Added support for a new provider called MLX4ND which supports both NDv1 and NDv2 interfaces Performance Enabled performance tuning running according to the operating systems that are running over it The keywords added to the registry in NDIS support Windows 2012 are RssMaxProcNumber NumRSSQueues RSSProfile The keywords added to the registry in NDIS support Windows 2008 R2 are RssBaseProcNumber MaxRssProcessors e RssBaseProcGroup The rest of the keywords are added in all versions of NDIS This change is based on http msdn microsoft com en us library windows hardware ff5 70864 v vs 85 aspx Ethernet e RoCE MTU value is no longer set to 1024 by default All options stay as they are and can only be chosen if they were selected explic itly in the Ul registry The current default state is as follows The value is now derived from the MTU or MaxFramSize or Jumbo Packets value and they a
13. service and the following text is printed in the installation log CustomAction StopWMIService returned actual error code 1603 ibdump may encounter packet drops upon a burst of more than 4096 or 2 max burst packets Kill the WMIPrvSE exe tasks in the task manager and reinstall Packets loss is not reported by ibdump Running ibdump on a RoCE Ethernet port may decrease the functional bandwidth due to the overhead of creating extra copy for each packet This may lead to packet drops on the link Pcap file issues for RoCE v1 5 The packets capture time field is wrong may be 0 or negative numbers e For every captured packet an additional 0 size flame is added This appears in Wireshark as a malformed Ethernet packet Verify Ethernet flow control is enable to ensure a lossless link Sniffing over IB ports is currently not supported Mellanox Technologies 31 Rev 4 70 Known Issues Table 10 WinOF Known Issues Sheet 13 of 13 Category Description Workaround CIM WMI Running Microsoft CIM cmdlets operations on classes The classes and the cmdlets MLNX NetAdapterSettingData and are deprecated use Driver MLNX NetAdapterRoceSettingData fails Mellanox CoreSettings instead custom cmdlets based on those classes will fail as well for example Get MinxNetAdapterRoceSetting Enable MinxNetAdapterSetting etc Calling those com mands may cause the debugger if con
14. 0 Table 1 New Features Changes and Fixes in v4 70 Category Description Installation Upgrade Fixed removal of virtual IPoIB ports in uninstallation All user space binaries are now signed Fixed restoration process of DNS servers during upgrade Fixed popping windows during installation upgrade Fixed missing 32 bit files in the catalog files Generic Changed Ethernet and IPoIB event log messages to be more clear Ported SDK project to Visual Studio 2013 Fixed an issue which caused Mellanox miniport devices to be listed in Devices and Printers Fixed Ethernet and IPoIB deadlock in power state change during shutdown reboot Fixed stability issues IPoIB Added support for IPoIB SR IOV Virtual Function VF over KVM Hypervisor Beta level Added support for non default pkey as queried from OpenSM on IPoIB SR IOV VF over KVM Added IPoIB QoS proprietary counters diagnostics and traffic for monitoring using Windows perfmon utility Fixed part man exit with return value 0 in case of error Ethernet Added Virtual Ethernet Adapter support which enables using SMB Direct and HyperV VMQ and NVGRE over ConnectX 3 Pro on the same port Added lossless TCP buffer management when no receive WQE are available RoCE Added ConnectX 3 Pro support for RoCEv2 Changed the transport name in vstat and ibstat to be RoCE v2 0 Fixed ibstat behavior on devices with RoCE enabled
15. 0 17718 Category Description Performance e Added support to IPv6 to all nd tests Fixed CPU utilization report in nd tests Fixed correct bandwidth peak results in ibv send bw with UD QP Fixed sync problems of bidirectional mode in ibv read bw ibv write bw Fixed an issue reporting incorrect adapter type in performance tuning log file RoCE Fixed RoCE mode parsing ND Added the ability to rearm a CQ in the kernel Added the ability to handle LID changes Changed connection timeout behavior Added the STATUS CONNECTION REFUSED return value upon connection timeout Fixed missing completions when working with Completion Queue with single entry IPoIB e Added the ability to handle LID changes e Added support for iSCSI boot over IPoIB Fixed unexpected behavior upon QP asynchronous event Fixed bad completions of VMQ and NonVMQ modes in IPoIB Fixed a failure occurred when setting the IPoIB adapter value to SA Query Timeout Fixed propagation of the physical link disconnection to virtual part man interface Performance improvements in latency Ethernet Modified the CQ size to prevent CQ overrun e Added DSCP support over IPv4 Added traffic profile Changed the report link speed zero in case of disconnected network adapter LBFO Fixed port channel teaming with CISCO switch and Fabric Extenders traffic loose in Windows Server 2008 R2 Fixed an issue related to packets sent with
16. 2 R2 Remove the VLANID before disabling the Priority amp VLAN tag Delete the existing teamed interface and create a new one WakeOnMagicPacket registry key is not added to the reg istry although WoL is supported by the driver and by the NIC When the ports of the device are configured as Ethernet only ibstat vstat may display wrong information High multicast drop rate on multicast storming Use Multicast traffic tun ing option under the perfor mance tab For further information please refer to section Tun able Performance Parame ters in the User Manual Driver installation requires deletion of the m1x4 bus sys file in Windows Server 2008 R2 and WLH OSs when using the PXE package Delete the m1x4 bus sys file and reboot the machine to install the driver 24 Mellanox Technologies Rev 4 70 Table 10 WinOF Known Issues Sheet 6 of 13 Category Description When there is a stress in TCP connection establishments some of those connections may fail Workaround Increase the Ring queue sizes e ReceiveBuffers controls the receive ring size TransmitBuffers con trols the transmit ring size Wake on Lan WoL cannot be disabled on NICs which supports it The DCB component specifies a default traffic classifica tion that is applied to all egress packets that do not match other classification conditions In this case the network adapte
17. 70 4 Unsupported Functionality Features The following are the unsupported functionality features in WinOF Rev 4 70 ND over WinVerbs provider SRP 4 1 ConnectX 2 Adapter Limitations Limited NDK support for details contact Mellanox Support CQ to EQ feature is not supported consequently the driver may associate RSS and VMQ packets with the wrong CPUs Mellanox perfmon counters are not supported Auto sensing is not supported e ibdump is not supported QoSis not supported Mellanox Technologies 19 J Rev 4 70 Known Issues 5 Known Issues Table 10 WinOF Known Issues Sheet 1 of 13 Category General Description Pinning all the physical memory used by RDMA opera tions such as register memory pin user memory on the machine on Operating Systems prior to Windows Server 2012 may cause the machine to hang Workaround Avoid pining the whole machine memory in those Operating Systems When the tracer tool traces many events it may consume a large amount of memory up to several GB RAM Reduce the verbose level The displayed MAC address in the DHCP server of virtual IPoIB I F may display a wrong data FF00 although the I F is still fully functional When running applications that use ND or libibumad such as OpenSM the system might get to a unstable state when trying to shutdown restart hibernate it Close all applications that uses ND or libibumad
18. Mellanox TECHNOLOGIES Mellanox WinOF VPI Release Notes Rev 4 70 www mellanox com Rev 4 70 NOTE THIS HARDWARE SOFTWARE OR TEST SUITE PRODUCT CPRODUCT S AND ITS RELATED DOCUMENTATION ARE PROVIDED BY MELLANOX TECHNOLOGIES AS IS WITH ALL FAULTS OF ANY KIND AND SOLELY FOR THE PURPOSE OF AIDING THE CUSTOMER IN TESTING APPLICATIONS THAT USE THE PRODUCTS IN DESIGNATED SOLUTIONS THE CUSTOMER S MANUFACTURING TEST ENVIRONMENT HAS NOT MET THE STANDARDS SET BY MELLANOX TECHNOLOGIES TO FULLY QUALIFY THE PRODUCTO S AND OR THE SYSTEM USING IT THEREFORE MELLANOX TECHNOLOGIES CANNOT AND DOES NOT GUARANTEE OR WARRANT THAT THE PRODUCTS WILL OPERATE WITH THE HIGHEST QUALITY ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT ARE DISCLAIMED IN NO EVENT SHALL MELLANOX BE LIABLE TO CUSTOMER OR ANY THIRD PARTIES FOR ANY DIRECT INDIRECT SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES OF ANY KIND INCLUDING BUT NOT LIMITED TO PAYMENT FOR PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY FROM THE USE OF THE PRODUCT S AND RELATED DOCUMENTATION EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE Mellanox TECHNOLOGIES Mellanox Tec
19. bdiagpath may crash on Hyper V machines If an application which uses InfiniBand runs while the driver is being restarted a bluescreen or an NMI may occur Stop all InfiniBand applica tions including OpenSM upon driver restart Rev 4 70 Known Issues Table 10 WinOF Known Issues Sheet 5 of 13 Category Description If OpenSM is up during driver restart on the same machine it might stop working when the driver is being backed up Workaround To resume operation stop OpenSM and restart the driver while OpenSM is down Sometimes during traffic the latency of the IPoIB can get higher this behavior is inconsistent Set the following registry in the IPoIB network interface RecvIntModTime 0 Please note this action increases the CPU utilization No communication between the physical interface and a VM that uses vSwitch created over virtual IPoIB Pkey and vice versa Burning a Firmware image with a mtu cap value other than the default causes the driver load to fail Do not change the mtu cap value Calling ib_query_cq on a CQ which was created with 1 entry indicates that there are 0 entries in the CQ Ethernet Disabling the Priority amp VLAN tag in the UI which VLANID is configured may result in sending packets with the configured VLANID When working with LBFO the teamed interface disap pears after machine reboot The issue applies to Windows Server 201
20. before performing shutdown restart hibernate Activating NC SI in WinOF v4 60 may cause driver s loading failure when using an older firmware version than 2 30 8000 Do not enable NC SI in machines that WinOF v4 60 Is installed in The maximum values returned by the ib query ca 0 function for example max qp max mr are the upper limits of the supported resources by the device However it may be impossible to use these maximum values since the actual number of any resource that can be created may be limited by the machine configuration the amount of host memory user permissions and the amount of resources already in use by other users processes Running Ntttcp without the a x flag X 71 in a NIC configured with 10GbE may cause low bandwidth in TCP single stream Run Ntttcp with a 8 for best performance Active links disappear after changing the cable connectiv ity from Ethernet to InfiniBand or vice versa Disable and enable the mlx4 bus interface from the Device Manager 20 Mellanox Technologies Rev 4 70 Table 10 WinOF Known Issues Sheet 2 of 13 Category Description On ConnectX 2 ConnectX 3 Ethernet adapter cards there is a mismatch between the GUID value returned by firmware management tools and that returned by fabric driver utilities that read the GUID via device firmware e g using ibstat MIxburn flint return Oxffff as GUID while the
21. corrupted VLAN header when they were meant to be untagged Fixed unexpected behavior upon QP asynchronous event Stability fixes Performance improvements 10 Mellanox Technologies Rev 4 70 Table 4 New Features Changes and Fixes in v4 60 17718 Category Description WMI CIM Added ControlledBy association to IBPort Fixed ConformsToProfiles association for Softwareldentity and Driverldentity Fixed execution of all tests which were running when executing Diagnostic tests on one instance Fixed a failure occurred when running MLNX Card Fixed the printing of diagnostics log e Fixed an issue preventing from get event to show information after disabling the PCI device Removed support for the following configuration e ModeFlags SingleMsixNum MultiMsixNum SingleEqNum MultiEq Num MaxContQuant SlaveNum DebugLevel DebugFlags UsePrio NumFcExch EnableQoS BlockMcastLoopBack nterruptFromFirstPacket ProbeVf 2 4 New Features Changes and Fixes in Version 4 55 From Version 4 40 Table 5 New Features Changes and Fixes in v4 55 Sheet 1 of 2 Category Description Generic e Added support for Windows Server 2012 R2 Operating System Added the ParentBusPath option to each port registry key e Added a new hardware ID for ConnectX 3 Pro NICs The QP numbers allocation is now round robin manner e RecvCompletionMethod as Interrupt is no
22. er 2008 R2 64 bit only Windows Server 2012 64 bit only e Virtual Machine OS Windows Server 2012 64 bit only Windows Server 2012 R2 64 bit only Virtual Machine OS Windows Server 2012 64 bit only and Windows Server 2012 R2 64 bit only KVM Hypervisor with MLNX OFED 2 2 Beta level Virtual Machine OS Windows Server 2012 64 bit only and Windows Server 2012 R2 64 bit only 1 4 Supported Network Adapter Cards Mellanox WinOF Rev 4 70 supports the following Mellanox network adapter cards ConnectX 3 Pro and ConnectX 3 Pro EN 10 40 and 56 Gb s InfiniBand IB e 10 and 40 Gb s Ethernet ConnectX 3 and ConnectX 3 EN 10 40 and 56 Gb s InfiniBand IB e 10 and 40 Gb s Ethernet ConnectX 2 and ConnectX 2 EN ConnectX adapter card is not supported by this release of WinOF Aha 1 4 4 Package Supplied Firmware Mellanox WinOF Rev 4 70 provides the following firmware for Mellanox NICs ConnectX 3 Pro and ConnectX 3 Pro EN firmware v2 31 5050 ConnectX 3 and ConnectX 3 EN firmware v2 31 5050 ConnectX 2 and ConnectX 2 EN firmware v2 9 1200 6 Mellanox Technologies Rev 4 70 2 Changes and Major New Features 2 4 New Features Changes and Fixes in Version 4 70 From Version 4 61 This package version is 4 70 50000 The package contains mixed versions of components Bus eth IPoIB and mux drivers version is 4 70 10126 The CIM provider version is 4 70 1013
23. g using Windows perfmon utility Added to the MTU size the IP header size 1500 gt 1514 9600 gt 9614 Thus the minimum Jumbo frame size is 614 Interrupt moderation supports the following profiles Low Latency Moderate Aggressive In addition to old values that are not supported anymore Made mlx4 bus and Ethernet devices removable e Network Direct Added support for NDv2 e Network Direct Set the default ND provide value to mlx4nd2 Fixed WoL support on NIC with a single port Fixed the default RoCE configuration on NICs with a single ports Fixed the values for the MTU and rate of the CM REQ Fixed miniport reset on sending scenarios Removed the QoS attributes when disabling QoS Enabled MaxRssProcessirs support of the following values 1 2 4 8 16 32 64 Network Direct Fixed a crash occurred when more than 4 SGEs elements were used in an ND write operation e Network Direct Fixed the swap of InboundReadLimit and OutboundRead Limit when creating an EndPoint and in Connector GetConnectionData Network Direct Fixed disallowing creation of EndPoint with zero attributes in the Receive Queue Network Direct Removed the option of NDK registration failure requiring a reboot of the machine to register it again Network Direct Fixed a failure when creating an EndPoint with zero attributes in the Receive Queue e Network Direct Added the option of sensing the incoming Read messages according to the device capabi
24. hanges in WinOF Rev 4 40 0 0 0 0 ccc cece eee nee 34 Mellanox Technologies 3 Rev 4 70 List of Tables Table 1 New Features Changes and Fixes in V4 70 2 0 ccc cette enn 7 Table 2 New Features Changes and Fixes in V4 61 2 0 0 cece cece rer rer erna 8 Table 3 New Features Changes and Fixes in v4 60 17738 0 0 cc ccc cece eens 9 Table 4 New Features Changes and Fixes in v4 60 17718 2 0 0 ccc ce eee nee 9 Table 5 New Features Changes and Fixes in v4 55 20 cece eee 11 Table 6 New Features Changes and Fixes in v4 40 0 0 0 cece eee 12 Table 7 New Features Changes and Fixes in V4 3 0 0 cece ees 15 Table 8 New Features Changes and Fixes in V4 2 0 0 cece eh 16 Tabled Beta Features veste patie ar tete oC eS hehe ee ce a 18 Table 10 WinOF KnownlIssues lese RR RR 3 e 20 Table 11 API Changes in WinOF Rev 4 70 1 0 0 0 0 cece cent nee anes 33 Table 12 API Changes in WinOF Rev 4 60 2 0 cece eect s eens 33 Table 13 API Changes in WinOF Rev 4 55 1 0 ccc cee ene ere rr res 33 Table 14 API Changes in WinOF Rev 4 40 0 0 ect ee 34 4 Mellanox Technologies Rev 4 70 1 Overview This is the release notes for Mellanox WinOF Rev 4 70 VPI drivers The driver intends to improve performance and functionality of the Inbox driver Therefore Mellanox strongly recommends updating to its latest driver to achieve optimal performance and
25. he Hypervisor Do not disable the MLNX driver on the Hypervisor iSCSI boot over Windows 2008 R2 is not supported Mellanox Technologies 21 Rev 4 70 Known Issues Table 10 WinOF Known Issues Sheet 3 of 13 Category InfiniBand Description InfiniBand application that was compiled with an SDK version earlier than WinOF v4 40 is not binary compatible Workaround Recompile InfiniBand appli cation with WinOF v4 40 and above ND application is backward compatible and older applications over ND do not have to be recompiled WMI does not work due to lack of permissions Change the execution policy Run Set ExecutionPolicy AllSigned WinOF 4 40 and above IPoIB driver is not IPv6 compati ble with earlier driver versions including Window 8 Inbox driver If WinOF 4 50 IPoIB node receives an icmpv6 message from the legacy IPoIB node the following event will appear in the event log IPOIB driver detected a possible incompati bility with Windows 8 inbox IPv6 support due to which there is no IPv6 connectivity To enable compatibility mode add Win8InboxCompatibilityMo de REG SZ registry key with the value of 1 in the IPoIB interface registry Note All IPoIB nodes must use the same mode to enable IPv6 compatibility with ear lier driver versions We recommend upgrading all hosts to the new driver ver sion from http mellanox com or use Windows 8 compatib
26. hnologies Mellanox Technologies Ltd 350 Oakmead Parkway Suite 100 Beit Mellanox Sunnyvale CA 94085 PO Box 586 Yokneam 20692 U S A Israel www mellanox com www mellanox com Tel 408 970 3400 Tel 972 0 74 723 7200 Fax 408 970 3403 Fax 972 0 4 959 3245 Copyright 2014 Mellanox Technologies All Rights Reserved Mellanox Mellanox logo BridgeX ConnectX amp Connect IB CoolBox CORE Direct InfiniBridge Infini Host InfiniScale MetroX MLNX OS PhyX ScalableHPC SwitchX UFM Virtual Protocol Interconnect and Voltaire are registered trademarks of Mellanox Technologies Ltd ExtendX FabricIT Mellanox Open Ethernet Mellanox Virtual Modular Switch MetroDX TestX TM Unbreakable Link are trademarks of Mellanox Technologies Ltd All other trademarks are property of their respective owners 2 Mellanox Technologies J Rev 4 70 Table of Contents Table of Contents isss Gc oss xq E Ra an ERE AEEREIOAOETERAS E EX Rau FES 3 Eistot Lables oe ERA ARR GER EO HOE EN GI EL CA DEG SAW SAW AC EA e ER Caleta 4 Chapter P OyervieW ose ee erre a e x Ub RON ERR S SFR E RR RR Re arae we 5 1 1 Mellanox WinOF Rev 4 70 New Features 000 0 eene 5 1 2 WinOF VPI Package Contents 0 0 0 0 cc ere ee 5 1 3 Supported Operating Systems Versions ssssseremeseereseerererr eese 6 1 4 Supported Network Adapter Cards 0 rer rer rer erna 6 1 4 1 Package Suppl
27. ied Firmware 0 0 cee cece rr rer eh 6 Chapter 2 Changes and Major New Features ssesessesoooseoooorc0rrt 7 2 1 New Features Changes and Fixes in Version 4 70 From Version 4 61 7 2 2 New Features Changes and Fixes in Version 4 61 From Version 4 60 8 2 3 New Features Changes and Fixes in Version 4 60 sssssesesserese rer eee 9 2 3 1 New Features Changes and Fixes in Version 4 60 17738 from Version 4 60 17718 9 2 3 2 New Features Changes and Fixes in Version 4 60 17718 from Version 4 55 9 2 4 New Features Changes and Fixes in Version 4 55 From Version 4 40 11 2 5 New Features Changes and Fixes in Version 4 40 From Version 4 3 12 2 6 New Features Changes and Fixes in Version 4 3 From Version 4 2 15 2 7 New Features Changes and Fixes in Version 4 2 From Version 3 2 0 16 Chapter 3 Beta Features scn iseti ken EE E Oe x RERO ERR RN OPEN M Ses 18 Chapter 4 Unsupported Functionality Features 0c cece cece cece cence 19 4 1 ConnectX 2 Adapter Limitations 0 0 0 0 eee eee eee 19 Chapter 5 Known ISSUeS eese sono oa Ra nce sini wi ROI ss oe ales R9 OR n skits outer wal a 20 Chapter 6 API Changes ore os e xOcU eR Ee Fac eg ox AR Wr cR UO RM ses 33 6 1 API Changes in WinOF Rev 4 70 0 0 0 33 6 2 API Changes in WinOF Rev 4 60 s sooooeeeserererrrrrerer rer ee 33 6 3 API Changes in WinOF Rev 4 55 0 0 0 ccc rer rer rer rena 33 6 4 API C
28. igration When a VM is migrated from one host to another it does not send a new ARP to hosts it already knew when it was sitting on the first host In order to prevent communication interruption to such hosts the driver will initiate an ARP to learn them again Fixed IPoIB VMQ affinity update bugs Fixed IPoIB VMQ parent queue management race during reset Fixed a bug in passing DHCP packets from a Linux VM Fixed bug in RDMA statistics for NDK e Removed affinity restriction to group 0 for NDK e Added support for the part man tool It can create only one additional IPoIB interface per port GUID This feature can be utilized to use different IPoIB interfaces for SMB and Hyper V The virtual ports configuration is removed during uninstall Installed ND by default The following tools were added to the setup package e ibv_asyncwatch exe e jbv atomic bw exe jbv atomic lat exe ibv_devinfo exe iby rc pingpong exe e ibv_rdma_bw exe ibv_rdma_lat exe ijbaddrexe e ijbcacheedit exe jblinkinfo exe jbqueryerrors exe jbsysstat exe saquery exe smpdump exe Mellanox Technologies 17 Rev 4 70 Beta Features 3 Beta Features Table 9 Beta Features Category Description WinVerbs WinVerbs is currently at beta level ibdump ibdump is currently at beta level IPoIB SR IOV IPoIB SR IOV currently supports KVM Hypervisor 18 Mellanox Technologies Rev 4
29. ility mode Functionality such as CQ to EQ Auto Sensing QoS are not supported in ConnectX 2 adapter cards On rare occasions as a result of port configuration change IB ETH the UI may get stuck for up to a few minutes This effect does not require any user action The UI returns to its proper functionality after a few minutes WinOF Inbox driver does not support upgrade When installing WinOF v4 40 and above on a Windows Server 2012 and above machine the Inbox driver is uninstalled prior to starting the new installation and any previous con figurations is lost The Inbox driver will be reinstalled automatically when the new driver is uninstalled Without separate ports for each stream WinSock multi plexes every packet to every subscriber socket and then fil ters it out A virtual IPoIB interface created by the part man utility reports an Active state when the physical link is in the Ini tializing state and OpenSM is not running in the subnet Use different UDP ports to get higher performance when using multicast packets 22 Mellanox Technologies Rev 4 70 Table 10 WinOF Known Issues Sheet 4 of 13 Category Mellanox Technologies 23 J Description The Packets Received Discarded and Packets Received Errors counter may display wrong results Workaround Firmware upgrade may fail during installation if there was a prior firmware upgrade on the machine without
30. lities when creating an EndPoint limit e Network Direct Fixed a failure of ND connectivity between VMs on the same host e Added Transmit Side Scaling TSS Added Ethernet QoS proprietary counters diagnostics and traffic for monitor ing using Windows perfmon utility Added to the MTU size the IP header size 1500 gt 1514 9600 gt 9614 Thus the minimum Jumbo frame size is 614 Interrupt moderation supports the following profiles Low Latency Moderate Aggressive In addition to old values that are not supported anymore Mellanox Technologies 13 J Rev 4 70 Changes and Major New Features Table 6 New Features Changes and Fixes in v4 40 Sheet 3 of 3 Category Description Made mlx4 bus and Ethernet devices removable Network Direct Added support for NDv2 e Network Direct Set the default ND provide value to mlx4nd2 Fixed WoL support on NIC with a single port Fixed the default RoCE configuration on NICs with a single ports Fixed the values for the MTU and rate of the CM REQ Fixed miniport reset on sending scenarios Removed the QoS attributes when disabling QoS Enabled MaxRssProcessirs support of the following values 1 2 4 8 16 32 64 Network Direct Fixed a crash occurred when more than 4 SGEs elements were used in an ND write operation Network Direct Fixed the swap of InboundReadLimit and OutboundRead Limit when creating an EndPoint and in Connector
31. nected to the machine to assert 32 Mellanox Technologies Rev 4 70 6 API Changes 6 1 API Changes in WinOF Rev 4 70 The following are the API changes in WinOF Rev 4 70 Table 11 API Changes in WinOF Rev 4 70 Name Description ib get port spl qp Added a new function ib get mad inner Changed API one more input parameter was added ib get mad Changed API one more input parameter was added VERBS MINOR VER Increased its value 000a gt 000c UNBOUND PORT NUM Added a new macro 6 2 API Changes in WinOF Rev 4 60 The following are the API changes in WinOF Rev 4 60 Table 12 API Changes in WinOF Rev 4 60 Name Description IB MOD QP CHANGE COUNTER INDEX Added a new macro struct ib qp mod t Added the field state rtr counter index 6 3 API Changes in WinOF Rev 4 55 The following are the API changes in WinOF Rev 4 55 Table 13 API Changes in WinOF Rev 4 55 Name Description RDMA TRANSPORT RRDMAOE 1 5 Added enumerated values RDMA TRANSPORT RRDMAOE 2 0 Added enumerated values RDMA TRANSPORT RRDMAOE It is an alias to RDMA TRANSPORT RRDMAOE 1 5 is rroce is xroce Added new functions IB AC SNIFFER Added a new macro struct ib qp mod t Added the field state init flags Mellanox Technologies 33 Rev 4 70 API Changes 6 4 API Changes in WinOF Rev 4 40
32. ning the following error message Windows cannot start this hardware device because its configuration information in the registry is incomplete or damaged Code 19 Scan for new hardware and reboot the machine Downgrade is not supported Uninstall the current version and install the older one Installation is stuck when Remote Desktop Session Host Windows Installer RDS Compatibility is enabled Occasionally upon driver upgrade due to mismatch of driver versions the following error message is displayed There is an interface mismatch between ETH driver and the bus driver The ETH driver interface version is 50 while the bus driver interface version is 17 As a result the ETH driver has failed to start This happened due to setup failures or par tial update of the drivers In order to resolve the issue please reboot the com puter The message can be safely ignored Disable the Remote Desktop Session Host Windows Installer for the duration of the installation according to the procedure described in http support microsoft com kb 2655192 Configuration is not restored when replacing a ConnectX 2 ConnectX 3 NIC with a ConnectX 3 Pro NIC located on the same PCI slot Clean the old network adapter configuration prior to upgrade Configuration can be restored only in Windows Server 2012 and above IPv6 configuration restore is not supported Mellanox Tech
33. ninstallation of the driver A Reboot may be required Rebooting the server before uninstalling the driver when LBFO is configured will eliminate this pop up com pletely Close perfmon before driver upgrade 30 Mellanox Technologies Rev 4 70 Table 10 WinOF Known Issues Sheet 12 of 13 Category Utilities Description Running a downgrade in silent mode is not supported Upon downgrade the return code will always be 0 Workaround Uninstalling the driver after upgrade won t remove the directory ProgramFiles Mellanox Uninstalling the driver when multiple of VLANs are con figured never ends mlxfwmanager which is supplied in the package 1s not signed Remove the VLANs before uninstallation The installation process does not close any applications running in the background and may cause a BSOD as a result of a stuck cmd Itis recommended to close all running applications prior to upgrading the driver Installation upgrade fails due to PNP failure to copy the driver files to the driver store and the following text 1s printed in the event logs Fault bucket type 0 Event Name PnPDriverImportError Response Not available Attached files C Users lt user gt App Data Local Temp DMI151A tmp log xml C Program Files Mella nox MLNX VPI ETH mlx4eth63 inf Reboot the machine and rein stall Installation upgrade fails due to failure to stop the WMI
34. nologies 29 J Rev 4 70 Known Issues Table 10 WinOF Known Issues Sheet 11 of 13 Category Description Upon upgrade the following Registry Key values will be overwritten with the following e ReceiveBuffers 512 e MaxRssProcessors 8 RssBaseProcNumber 0 NumRSSQueues 8 RssMaxProcNumber 63 RssProfile 1 DefaultRecvRingProcessor 1 TxInterruptProcessor 1 e TxForwardingProcessor 1 e RxIntModerationProfile 1 TxIntModerationProfile 1 e RecvCompletionMethod 1 SingleStream 0 TxRingNum 8 Workaround Upon upgrade the following Ethernet Registry Keys will be deleted e SendCompletionMethod e UseRSSForRawIP UseRSSForUDP Upon upgrade the SendCompletionMethod IPoIB Registry Key value will be modified as follow e SendCompletionMethod 0 Upon upgrade the following IPoIB Registry Keys will be deleted UseRSSForRawIP e UseRSSForUDP The empty directory ProgramFiles Mellanox MLNX_VPI Endure DLLs is being created during the driver installation Uninstalling the driver on Windows Server 2008 R2 with LBFO configuration results in the appearance of a pop up window requesting to close several running applications Upgrading the driver while perfmon is open and monitor ing the ConnectX NIC device may end up with adapters having yellow bang with code 10 Choose Do not close appli cations This action allows the u
35. or each VMQ set filter request without GRE flag Note For regular NVGRE Hyper V scenarios the value of the registry key below must be set to 0 AcceptGREbyOuterMAC P1 2 Disabling the ethernet adapter with more than 25 VLANs configured over windows 2008 R2 windows 7 may result with a non responding server Reduce the number of configured VLANs prior to disabling the ethernet adapter Quality of Service Running Quality of Service QoS commands without the parameter PolicyStore ActiveStore may cause machines to load without Quality of Service policy Store the QoS policy in the ActiveStore RoCE NVGRE RoCE does not support Traffic cannot go through the router It works in the same subnet only Multicast traffic VLAN e Layer 3 feature In machines with heterogeneous NICs a NIC which sup ports RoCE v2 and a NIC which does not support RoCE v2 the following issus might raise Connect X 3 Pro is loaded with the transport type RoCE v2 e Connect X 3 is loaded with the transport type RoCE When NVGRE off load is enabled the GRE traffic cannot be accepted as a regular L2 traffic and requires special L2 TUNNELING steering rules In such case the GRE packets are dropped or directed to promiscuous queue Using different versions of RoCE in your cluster is not supported Use the same RoCE version in all the cluster in the Ether net ports 26 Mellanox
36. performance e Added a performance UI to tune performance under various scenarios e Added a tool to tune performance under various scenarios 16 Mellanox Technologies Rev 4 70 Table 8 New Features Changes and Fixes in v4 2 Sheet 2 of 2 Category Description Ethernet e Added support for multiple TX rings Added an option to verify that the number of multicast groups used is no higher than the firmware limits Improved performance in virtualization when using VMQ IPoIB Fixed a bug that prevented IBAL applications from working on machines with 2 cards Fixeda bug that caused packet drop on remote node when the first sent packet is not an ARP or a multicast packet e Added support for multiple TX rings The new driver advertises its TSS capa bility using multiple TX rings This feature will not be used when communi cating with older version drivers such as the inbox driver This way IPv4 communication in a mixed environment that includes the inbox driver should work IPv6 communication may be problematic in such an environment Eliminated some race conditions in IPoIB mcast handling e Added mcast addresses according to the Windows mcast table in addition to mcast addresses from igmp mld queries in order to connect to such mcasts that are not reported by the queries Removed redundant LID CHANGE events This fixes the redundant recon nection of all IPoIB mcasts e Added support for VM m
37. r assigns the IEEE 802 1p priority level that is asso ciated with the default classification to these egress pack ets The default traffic classification has the following attributes It has a traffic classification condition of type NDIS QOS CONDITION DEFAULT tis the first traffic classification defined in the array of NDIS QOS CLASSIFICATION ELEMENT struc tures RDMA Activity counters do not count during NetworkDi rect RoCE traffic In SR IOV mode all ports are in pure Ethernet mode and RDMA is not supported on either port In SR IOV mode enabling SR IOV in the BIOS may change the interfaces names If any VSwitch is bounded to an interface whose name was changed there will not be any way to perform any operation on them GRE traffic steering by inner MAC and by outer MAC simultaneously is currently not supported Unbond all Vswitches from the NIC s interfaces before enabling SR IOV in the BIOS Configure steering or by inner MAC or by outer MAC Mellanox Technologies 25 Rev 4 70 Known Issues Table 10 WinOF Known Issues Sheet 7 of 13 Category Description If VMQ set filter requests are accepted without a GRE flag i e requested steering by outer MAC the GRE packets do not reach that VMQ Workaround Set the bus driver registry keyAcceptGREbyOuterMAC _P1 2 per port to accept GRE traffic by outer MAC and to duplicate L2 steering tule to L2 TUNNELING rule f
38. re all aliases for the same value The value is aligned to 256 512 1024 2048 in a way that it will be rounded down to the nearest power of two of the ETH MTU InfiniBand e Added ibdiagnet utility support Mellanox Technologies 15 Rev 4 70 Changes and Major New Features 2 7 New Features Changes and Fixes in Version 4 2 From Version 3 2 0 Table 8 New Features Changes and Fixes in v4 2 Sheet 1 of 2 Category Description General Modified RSS cores and changed VMQ affinity on the fly Fixed restart issue when there are not enough MSI X vectors for each machine core e Added support for K GROUPS processors more than 64 processors support to allow assignment of MSI X affinity for multiple processor groups e Set an adequate number of MTTs to map all physical memory Allocated firmware and ICM memory in chunks of non paged memory instead of using contiguous physical memory Fixed RSS indirection table mapping building when there are less RX rings than RSS cores Fixed a bug preventing standard work with BAR value more than 4GB Fixed memory leaks Fixed error flows causing a Bluescreen in driver startup unload Fixed a Bluescreen occurrence upon shutdown due to leak in active resources Changed device names in device manager and their hardware IDs The changes were made to distinguish between ConnectX 2 and ConnectX 3 for ConnectX 2 MLX4MConnectX 2 Eth and IBA ConnectX 2_IPoIB
39. s Allowed any number of RSS processors not only a power of 2 Ensured SR IOV mode is not enabled for IPoIB ports which resulted in con fusing message in event log Fixed error statistics collection which could cause false error report Fixed a connectivity problem between Hyper V VMs on the same host Fixed loopback issues in the virtualization environment Fixed stability issues Ethernet Added support for unknown link state indication e Added support for DMA checks by driver verifier on SR IOV Virtual Function Added support for NVGRE over LBFO Team Improved performance of handling change receive ring affinity request In SR IOV mode improved resiliency to driver failures in the Virtual Machine which could result in driver load failure in VM In SR IOV mode improved resilience in VF to PF communication Improved structure of INF file for SR IOV Physical and Virtual Functions Fixed an issue that prevented receiving ARP traffic in NVGRE mode 8 Mellanox Technologies Rev 4 70 2 3 New Features Changes and Fixes in Version 4 60 2 3 1 New Features Changes and Fixes in Version 4 60 17738 from Version 4 60 17718 This package version is 4 60 17738 The package contains the following versions of components E Bus and eth driver version 4 60 17718 py The CIM provider version is 4 60 17718 The mux driver version is 4 60 17729 The IPoIB driver version is 4 60 17736
40. the Jumbo Packet on the ETH IPoIB device to X and the Jumbo Packet on the vSwitch to X Y X Y sized packets will be passed from NDIS down to the driver and they will be dropped by it Unexpected behavior might occur when running in a virtu alized environment and creating two virtual switches bound to each of the ports of a dual port NIC and then using both of them with two vNICs from the same VM Reattach the vSwitch to sync with the value set in the ETH IPoIB device Mellanox Technologies 27 Rev 4 70 Known Issues Table 10 WinOF Known Issues Sheet 9 of 13 Category Description Workaround When moving an IPoIB interface ina VM from non VMQ to VMQ or from VMQ to non VMQ a reset to the NIC may occur and in the event log the fol lowing message will appear device reports a CQE error on cqn lt num ber qpn number Status number There fore the HCA Nic will be reset The issu is reported in Function lt function gt For more information refer to details In IPoIB when using long Multicast traffic from a Virtual Machine VM to an external host there might be up to 0 5 loss in 5 bursts Hyper V is at low bandwidth on LBFO vSwitch Windows 2012 In Ethernet to achieve better iperf TCP performance between a Linux VM and a Windows VM on different hosts when using MS MUX over the Ethernet driver use the non VMQ mode for the VMs
41. utilities return a value derived from the MAC address For all driver firmware software purposes the lat ter value should be used Workaround Please use the GUID value returned by the fabric driver utilities not Oxfffff When working with the default NDv1 and NDv2 provid ers the following error message might be displayed 0xC0000120 NT STATUS CANCELLED This error does not affect any functionality and can be safely ignored Changing the default ND providers may cause random errors such as 0xC0000238 NT STATUS ADDRESS ALREADY ASSOCIATED on Connect or with 0xC0000236 NT STATUS CONNECTION REFUSED on Accept These errors can be safely ignored The UI displays the network interface s state incorrectly even after disabling and re enabling the disconnected network interfaces To see the correct state and link speed perform one ofthe following RunGet netadapter Powershell cmdlet or e Right click on that inter face from Network Con nections and click on status SR IOV should be enabled only when both ports are Ether net If SR IOV is enabled when both ports are in auto sens ing mode the ports type is forced to be Ethernet WoL 1s not supported on Windows 2008 R2 Performing the following scenario causes memory leak of 64 bytes on the Virtual Machine Creating VFs Restarting VM associated to VF s Disabling MLNX driver on t
Download Pdf Manuals
Related Search