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Mellanox OFED for Linux Release Notes

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1. 128 Byte Completion Queue Entry CQE Non Linux Virtual Machines Added Windows Virtual Machine over Linux KVM Hypervisor SR IOV with InfiniBand only support Mellanox Technologies 41 J Rev 3 0 1 0 1 Change Log History Table 51 Change Log History Release Category Description Rev 2 2 1 0 1 minxofedinstall 32 bit libraries are no longer installed by default on 64 bit OS To install 32 bit libraries use the with 32bit installation parameter openibd Added pre post start stop scripts support For further information please refer to section openibd Script in the MLNX OFED User Manual Reset Flow Reset Flow is not activated by default It is controlled by the mlx 4 core internal err reset module parameter Rev 2 2 1 0 1 InfiniBand Core Asymmetric MSI X vectors allocation for the SR IOV hypervisor and guest instead of allocating 4 default MSI X vectors The maxi mum number of MSI X vectors is num cpu for port ConnectX 3 has 1024 MSI X vectors 28 MSI X vectors are reserved e Physical Function gets the number of MSI X vectors accord ing to the pf msix table size multiple of 4 1 INI parameter Virtual Functions the remaining MSI X vectors are spread equally between all VFs according to the num vfs mlx 4 core module parameter Ethernet Ethernet VXLAN support for kernels 3 12 10 or higher Power Management Quality of Service
2. 4671958 383506 Request for unknown module key Mellanox Technologies sign ing key 61feb074f c7292 958419386ffdd9d5 Ca999e403 err 11 This error can be safely ignored as long as Secure Boot is disabled on the system 2 Ubuntul2 requires update of user space open iscsi to v2 0 873 3 The initiator does not respect interface parameter Configure each interface on a different subnet while logging in Mellanox Technologies 27 J Rev 3 0 1 0 1 Known Issues 3 22 Fork Support Known Issues Table 32 Fork Support Known Issues Index Description Workaround l Fork support from kernel 2 6 12 and above is avail able provided that applications do not use threads fork is supported as long as the parent process does not run before the child exits or calls exec The former can be achieved by calling wait childpid and the latter can be achieved by application specific means The Posix system call is supported 3 23 ISCSI over IPoIB Known Issues Table 33 ISCSI over IPoIB Known Issues Index Description Workaround 1 When working with ISCSI over IPoIB LRO must be disabled even if IPoIB is set to connected mode due to a a bug in older kernels which causes a kernel panic 3 24 MLNX OFED Sources Known Issues Table 34 MLNX_OFED Sources Known Issues Index Description Workaround 1 MLNX_OFED includes the OFED source RPM packages used as
3. Ji In ConnectX 2 when the debug level module parameter for module mlx4 core is non zero if the driver load succeeds the informative message below is presented conveying the below limitations mlx4 core 0000 0d 00 0 command SET PORT Oxc failed in param 0x120064000 mod 0x0 fw status in mod 0x2 op 0x40 openibd start unloads kernel modules that were loaded from initrd initramfs upon boot This affects only kernel modules which come with MLNX OFED and are included in initrd initramfs If a Lustre storage is used it must be fully unloaded before restarting the driver or rebooting the machine otherwise machine might get stuck panic 1 Unmount any mounted Lustre storages umount lt lustre mount points 2 Unload all Lustre modules lustre rmmod 3 12 Performance Tools Known Issues Table 22 Performance Tools Known Issues Index Description Workaround l perftest package in MLNX OFED v2 2 1 0 1and onwards does not work with older versions of the driver 3 13 Performance Known Issues Table 23 Performance Known Issues Index Description Workaround l On machines with irqbalancer daemon turned off 8 Execute the following script as root the default InfiniBand interrupts will be routed toa set irq affinity sh interface or single core which may cause overload and software IB device 2nd interface or IB hardware lockups device 2 Out of
4. Table 37 Ethernet Performance Counters Known Issues Continued Index Description Workaround 3 In ConnectX 3 when we enable function based loopback prevention for Ethernet port by default i e based on the QP counter index the dropped self loopback packets increase the IfRxErrorFrames Octets counters 3 28 Uplinks Known Issues Table 38 Uplinks Known Issues Index Description Workaround l On rare occasions ConnectX 3 Pro adapter card Restart the driver may fail to link up when performing parallel detect to 40GbE 3 29 Tools Known Issues Table 39 Tools Known Issues Index Description Workaround l Running ibdump in InfiniBand mode with firmware Run ibdump with firmware v2 33 5000 and older than v2 33 5000 may cause the server to hang higher due to a firmware issue 30 Mellanox Technologies Rev 3 0 1 0 1 3 30 Resources Limitation Known Issues Table 40 Resources Limitation Known Issues Index Description Workaround 1 The device capabilities reported may not be reached as it depends on the system on which the device is installed and whether the resource is allocated in the kernel or the userspace mlx4 core can allocate up to 64 MSI X vectors an MSI X vector per CPU Setting more IP addresses than the available GID entries in the table results in failure and the update gid table error message is di
5. face 30 XRC XRC over ROCE in SR IOV mode is not functional 2 0 3 1 0 2 2 1 0 1 31 mlx4 en Fixed wrong calculation of packet true size reporting 2 1 1 0 0 2 2 1 0 1 in LRO flow 32 Fixed kernel panic on Debian 6 0 7 which occurred 2 1 1 0 0 2 2 1 0 1 when the number of TX channels was set above the default value 33 Fixed a crash incidence which occurred when 2 0 2 0 5 2 2 1 0 1 enabling Ethernet Time stamping and running VLAN traffic 34 IB Core Fixed the QP attribute mask upon smac resolving 2 1 1 0 0 2 1 1 0 6 35 mlx5_ ib Fixed a send WQE overhead issue 2 1 1 0 0 2 1 1 0 6 36 Fixed a NULL pointer de reference on the debug 2 1 1 0 0 2 1 1 0 6 print 37 Fixed arguments to kzalloc 2 1 1 0 0 2 1 1 0 6 38 mlx4 core Fixed the locks around completion handler 2 1 1 0 0 2 1 1 0 6 39 mlx4_core Restored port types as they were when recovering 2 0 2 0 5 2 1 1 0 0 from an internal error 40 Added an N A port type to support port type array 2 0 2 0 5 2 1 1 0 0 module param in an HCA with a single port 41 SR IOV Fixed memory leak in SR IOV flow 2 0 2 0 5 2 0 3 0 0 42 Fixed communication channel being stuck 2 0 2 0 5 2 0 3 0 0 Mellanox Technologies 37 J Rev 3 0 1 0 1 Bug Fixes History Table 50 Fixed Bugs List Discovered Fixed in iue D seription in Release Release 43 mlx4 en Fixed ALB bond
6. Ubuntu 14 04 5 12 Mellanox Technologies Rev 3 0 1 0 1 2 Changes in Rev 3 0 1 0 1 From Rev 2 4 1 0 0 Table 9 Changes in v3 0 1 0 1 Category Description HCAs Added support for ConnectX 4 Single Dual Port Adapter supporting 100Gb s SR IOV in ConnectX 3 cards Changed the Alias GUID support behavior in InfiniBand LLR max retransmission rate Added LLR max retransmission rate as specified in Vendor Specific MAD V1 1 Table 110 PortLLRStatistics MAD Description ibdiagnet presents the LLR max_retransmission_rate counter as part of the PM INFO in db csv file Experimental Verbs Added the following verbs e ibv_exp query intf e ibv exp release intf ibv exp gp burst family e ibv exp cq family For further information please refer to Section 1 1 Main Features in This Release on page 6 2 1 API Changes in MLNX OFED Rev 3 0 1 0 1 The following are the API additions changes in MLNX OFED Rev 3 0 1 0 1 Table 10 API Changes in MLNX OFED Rev 3 0 1 0 1 Release Name Description Rev 3 0 1 0 1 libibverbs Added the following new APIs e ibv_exp_create_res_domain create resource domain e ibv_exp_destroy_res_domain destroy resource domain e ibv exp query intf query for family of verbs interface for specific QP CQ e ibv exp release intf release the queried interface Updated the following APIs ibv exp create qp Add resource domain to the verb param
7. e without package Rev 2 1 1 0 6 Content Packages The following packages were updated Updates bupc to v2 2 407 mstflint to v3 5 0 1 1 g76e4acf e perftest to v2 0 0 76 gbf9a463 e hcoll to v2 0 472 1 e Openmpi to v1 6 5 440ad47 e dapl to v2 0 40 Rev 2 1 1 0 0 EoIB EoIB is supported only in SLES11SP2 and RHEL6 4 eIPoIB eIPoIB is currently at GA level Connect IB Added the ability to resize CQs IPoIB Reusing DMA mapped SKB buffers Performance improvements when IOMMU is enabled minx_en Added reporting autonegotiation support Added Transmit Packet Steering XPS support Added reporting 56Gbit s link speed support Added Low Latency Socket LLS support Added check for dma_mapping errors eIPoIB Added non virtual environment support Mellanox Technologies 43 J Rev 3 0 1 0 1 Change Log History Table 51 Change Log History Release Category Description Rev 2 0 3 0 0 Operating Systems Additional OS support e SLESIISP3 Fedora16 Fedoral7 Drivers Added Connect IBTM support Installation Added ability to install MLNX OFED with SR IOV support Added Yum installation support EoIB EoIB at beta level is supported only in SLES11SP2 and RHEL6 4 mlx4 core Modified module parameters to associate configuration values with specific PCI devices identified by their bus device function value format mlx4 en Reusing DMA mapped buffer
8. when the traffic 1s active the Power Management QoS is enabled by disabling the CPU states for maximum performance Ethernet PTP Hardware Clock support on kernels OSes that sup port it Verbs Added additional experimental verbs interface This interface exposes new features which are not integrated yet in to the upstream libibverbs The Experimental API is an extended API therefor it is backward compatible meaning old application are not required to be recompiled to use MLNX OFED v2 2 1 0 1 Performance Out of the box performance improvements e Use of affinity hints based on NUMA node of the device to indicate the IRQ balancer daemon on the optimal IRQ affinity Improvement in buffers allocation schema based on the hint above Improvement in the adaptive interrupt moderation algorithm 42 Mellanox Technologies Rev 3 0 1 0 1 Table 51 Change Log History Release Category Description Rev 2 1 1 0 6 IB Core Added allocation success verification process to ib alloc device dapl dapl is recompiled with no FCA support openibd Added the ability to bring up child interfaces even if the parent s ifcfg file is not configured libmlx4 Unmapped the hca clock page parameter from mlx4 uninit con text scsi transport srp scsi transport srp cannot be cleared up when rport reconnecting fails minxofedinstall Added support for the following parameters e umad dev na
9. 2 4 1 0 4 IB core module during memory registration I mlx5 ib Fixed the return value of max inline received size in 2 3 2 0 1 2 4 1 0 0 the created QP 2 Resolved soft lock on massive amount of user mem 2 3 2 0 1 2 4 1 0 0 ory registrations 3 InfiniBand Counters Occasionally port rcv data andport xmit 2 3 1 0 1 2 4 1 0 0 data counters may not function properly 4 mlx4 en LRO fixes and improvements for jumbo MTU 2 3 2 0 1 2 4 1 0 0 5 Fixed a crash occurred when changing the number of 2 2 1 0 1 2 4 1 0 0 rings ethtool set channels when interface con nected to netconsole 6 Fixed ping issues with IP fragmented datagrams in 2 2 1 0 1 2 4 1 0 0 MTUS 1600 1700 7 The default priority to TC mapping assigns all prior 2 3 1 0 1 2 4 1 0 0 ities to TCO This configuration achieves fairness in transmission between priorities but may cause unde sirable PFC behavior where pause request for prior ity n affects all other priorities 8 mlx5 ib Fixed an issue related to large memory regions regis 2 3 2 0 1 2 3 2 0 5 tration The problem mainly occurred on PPC sys tems due to the large page size and on non PPC systems with large pages contiguous pages 9 Fixed an issue in verbs API fallback to glibc on con 2 3 2 0 1 2 3 2 0 5 tiguous memory allocation failure 10 IPoIB Fixed a memory corruption issue in multi core sys 2 3 2 0 1 2 3 2 0 5 tem due to intensive I
10. Description Workaround 1 Flow Steering is disabled by default in firmware ver sion 2 32 5100 To enable it set the parameter below as follow log num mgm entry size should set to 1 IPv4 rule with source IP cannot be created in SLES 11 x OSes RFS does not support UDP When working in DMFS A0 mode and VM hyper visor is MLNX OFED 2 3 x x x the second side hypervisor VM respectively should be MLNX _OFED 2 3 x x x as well 3 18 Quality of Service Known Issues Table 28 Quality of Service Known Issues Index Description Workaround 1 QoS is not supported in XenServer Debian 6 0 and 6 2 with uek kernel 2 When QoS features are not supported by the kernel mlnx qos tool may crash 3 QoS default settings are not returned after configur ing QoS 3 19 Installation Known Issues Table 29 Installation Known Issues Index Description Workaround 1 When upgrading from an earlier Mellanox OFED Stop the old OFED stack etc init d version the installation script does not stop the ear openibd stop before upgrading to this new lier version prior to uninstalling it version 2 Upgrading from the previous OFED installation to Reboot after installing the driver this release does not unload the kernel module ipoi b helper 3 Installation using Yum does not update HCA firm See Updating Firmware After Installation in ware OFED
11. Workaround l When 2 different ports have identical GIDs the CM might send its packets on the wrong port All ports must have different GIDs 3 15 SR IOV Known Issues Table 25 SR IOV Known Issues Index Description Workaround l When using legacy VMs with MLNX OFED 2 x hypervisor you may need to set the enable 64b cqe eqe parameter to zero on the hypervisor It should be set in the same way that other module parameters are set for mlx4 core at module load time For example add options mlx4 core enable 64b cqe eqe 0 as a line in the file etc modprobe d mlx4 core conf InfiniBand counters are not available in the VM mlx4 porti mtu sysfs entry shows a wrong MTU number in the VM When at least one port is configured as InfiniBand and the num vfs is provided but the probe vf is not HCA initialization fails Use both the num v s and the probe vf in the modprobe line When working with a bonding device to enslave the Ethernet devices in active backup mode and failover MAC policy in a Virtual Machine VM establish ment of RoCE connections may fail Unload the module mlx4 1b and reload it in the VM Attaching or detaching a Virtual Function on SLES11 SP3 to a guest Virtual Machine while the mlx4 core driver is loaded in the Virtual Machine may cause a kernel panic in the hypervisor Unload the mix4 core module in the hypervi sor before atta
12. a build platform for kernel code but does not include the sources of Mellanox propri etary packages 3 25 InfiniBand Utilities Known Issues Table 35 InfiniBand Utilities Known Issues Index Description Workaround 1 When running the ibdiagnet check nodes info on Run ibdiagnet skip nodes info the fabric a warning specifying that the card does not support general info capabilities for all the HCAs in the fabric will be displayed 2 ibdump does not work when IPoIB device managed Enable IPoIB Flow Steering and restart the Flow Steering is OFF and at least one of the ports is driver configured as InfiniBand For further information please refer to MLNX _OFED User Manual section Enable Disable Flow Steering 28 Mellanox Technologies Rev 3 0 1 0 1 3 26 mlx5 Driver Known Issues Table 36 mlx5 Driver Known Issues Index Description Workaround 1 Atomic Operations in Connect IB are fully sup ported on big endian machines e g PPC Their support is limited on little endian machines e g x86 EEH events that arrive while the mlx5 driver is load ing may cause the driver to hang The mlx5 driver can handle up to 5 EEH events per hour If more events are received cold reboot the machine In PPC systems when working with ConnextX 4 adapter card configured as Ethernet driver load fails with BAD INPUT LENGTH dmesg command failed status b
13. core unload may fail due to a bug in some ker nel versions The bug is fixed in Kernel 3 15 3 11 Driver Start Known Issues Table 21 Driver Start Known Issues Index Description Workaround l Out of memory issues may rise during drivers load depending on the values of the driver module parameters set e g log num cq 2 When reloading starting the driver using the etc init d openibd the following messages are dis played if there is a third party RPM or driver installed Module mlx4 core does not belong to MLNX _OFED or Module mlx4 core belong to rpm name gt which is not a part of MLNX OFED Remove the third party RPM non MLNX _OFED drivers directory run depmod and then rerun etc init d openibd restart 3 Occasionally when trying to repetitively reload the NES hardware driver on SLES 11 SP2 a soft lockups occurs that required reboot 4 When downgrading from MLNX_OFED 3 0 x x x driver reload might fail with the following errors in dmeg 166271 886407 compat exports dupli cate symbol ethtool get settings owned by mlx compat The issues will be resolved automatically after driver reboot or by invoking the following commands rmmod mlx compat depmod a etc init d openibd restart Mellanox Technologies 21 J Rev 3 0 1 0 1 Known Issues Table 21 Driver Start Known Issues Continued Index Description Workaround
14. events arrived during driver 2 3 1 0 1 2 3 2 0 0 load 21 Fixed race in mlx5 eq int when events arrived 2 3 1 0 1 2 3 2 0 0 before eq dev was set 22 Enabled all pending interrupt handlers completion 2 3 1 0 1 2 3 2 0 0 before freeing EQ memory 23 minx conf Defined mlnx conf as a configuration file in mlnx 2 1 1 0 0 2 3 2 0 0 ofa kernel RPM 24 SR IOV Fixed counter index allocation for VFs which 2 3 1 0 1 2 3 2 0 0 enables Ethernet port statistics 25 iSER Fixed iSER DIX sporadic false DIF errors caused in 2 3 1 0 1 2 3 2 0 0 large transfers when block merges were enabled 26 RoCE v2 RoCE v2 was non functional on big Endian 2 3 1 0 1 2 3 2 0 0 machines 27 Verbs Fixed registration memory failure when fork was 2 3 1 0 1 2 3 2 0 0 enabled and contiguous pages or ODP were used 36 Mellanox Technologies Rev 3 0 1 0 1 Table 50 Fixed Bugs List Discovered Fixed in D sus Desenintion in Release Release 28 Installation Using both c config and add kernel 22 1 0 1 2 3 2 0 0 support flags simultaneously when running the mlnxofedinstall sh script caused installation failure with the following on screen message config does not exist 29 IPoIB Changing the GUID ofa specific SR IOV guest after 2 1 1 0 0 2 3 1 0 1 the driver has been started causes the ping to fail Hence no traffic can go over that InfiniBand inter
15. interface index 14 After releasing a bond interface that contains IPoIB slaves a call trace might be printed into the dmesg Mellanox Technologies 15 J Rev 3 0 1 0 1 Known Issues Table 11 IPoIB Known Issues Continued Index Description Workaround 15 IPoIB interfaces are loaded without an IP address on SLES 12 1 Open the etc wicked common xml file 2 Change lt use nanny gt false lt use nanny gt to lt use nanny gt true lt use nanny gt 3 Run systemctl restart wickedd ser vice wicked ifup all In RHEL7 0 running ifdown then ifup on an inter face after changing CONNECTED MODE in its ifcfg file will cause the interface bring up to fail Reload the driver etc init d openibd restart or reboot the system Clone interfaces receive a duplicated IPv6 address when a child interface with the same PKey a k a clone interface is used for all the clones eth ipoib module is not loaded after reloading the ib ipoib module To restart the IPoIB driver run etc init d openibd restart Do not restart it by manually restarting each module In Ubuntu and Debian the default of the recv queue size and send queue size is 128 according to the io mmu issue 20 In RHEL6 7 when the Network Manager service is enabled and an IPoIB interface is configured using the nm connection editor tool the generated ifcfg file is missing the DEVICE lt i
16. local length error when RDMA READ is used 3 9 Verbs Known Issues Table 19 Verbs Known Issues Index Description Workaround l Using libnl1_1_3 26 or earlier requires ibv_cre ate_ah protection by a lock for multi threaded appli cations 2 In MLNX OFED v2 4 1 0 0 if several CQEsare When getting an event poll the CQ until it is received on a CQ they will be coalesced and a user empty space event will be triggered only once 3 ibv task pingpong over ConnectX 2 adapter cards in not supported 20 Mellanox Technologies Rev 3 0 1 0 1 3 10 Resiliency Known Issues Table 20 Resiliency Known Issues VST Host assigned GUIDs and QP0 enabled VFs may be lost upon Reset Flow Index Description Workaround l Reset Flow can run on XenServer 6 only after the active user space applications running verbs are ter minated 2 SR IOV non persistent configuration such as VGT Reset Admin configuration post Reset Flow config when Reset Flow is running might result in a kernel panic 3 Upon Reset Flow or after running restart driver Reset the VLANS using the ifup command Ethernet VLANs are lost 4 Restarting the driver or running connectx port 5 Networking configuration e g VLANs IPv6 should be statically defined in order to have them set after Reset Flow as of after restart driver 6 After recovering from an EEH event mlx5 core mlx4
17. the box throughput performance in Ubun For additional performance tuning please refer tu14 04 is not optimal and may achieve results to Performance Tuning Guide below the line rate in 40GE link speed 3 UDP receiver throughput may be lower then Disable adaptive interrupt moderation and set expected when running over mlx4 en Ethernet lower values for the interrupt coalescing manu driver ally This is caused by the adaptive interrupt moderation ethtool C lt eth gt X adaptive rx off routine which sets high values of interrupt coalesc rx usecs 64 rx frames 24 ing causing the driver to process large number of packets in the same interrupt leading UDP to drop Values above may need tuning depending the packets due to overflow in its buffers system configuration and link speed 4 Performance degradation might occur when bonding Ethernet interfaces on Centos 6 5 22 Mellanox Technologies Rev 3 0 1 0 1 Table 23 Performance Known Issues Continued Index Description Workaround 3 TCP throughput on ConnectX 4 may not achieve full line rate Run connectx4 eth max performance i interface max throughput TCP UDP latency on ConnectX 4 may be higher than expected Run connectx4 eth max performance i interface min latency 3 14 Table 24 Connection Manager CM Known Issues Connection Manager CM Known Issues Index Description
18. 1 0 1 Known Issues Table 41 RoCE Known Issues Continued Index Description Workaround 3 On rare occasions the driver reports a wrong GID table read from sys class infiniband mlx4_ ports gids This may cause communication problems 4 MLNX OFED v2 1 1 0 0 and onwards is not interoperable with older versions of MLNX OFED 5 Since the number of GIDs per port is limited to 128 there cannot be more than the allowed IP addresses configured to Ethernet devices that are associated with the port Allowed number is e 127 for a single function machine e 15 for a hypervisor in a multifunction machine e 127 15 n for a guest in a multifunction machine where n is the number of virtual func tions Note also that each IP address occupies 2 entries when RoCE mode is set to 4 RoCEv1 RoCE v2 This further reduces the number of allowed IP addresses 6 A working IP connectivity between the RoCE devices is required when creating an address handle or modifying a QP with an address vector T IPv4 multicast over RoCE requires the MGID format to be as follow Multicast IPv4 Address gt 8 IP RoCEv2 does not support Multicast Listener Dis covery MLD therefore multicast traffic over IPv6 may not work as expected 9 Using GID index 0 the default GID is possible only if the matching IPv6 link local address is con figured on the net device of the port This be
19. 4 gtk2 atk cairo pkg config SLES 12 zypper install pkg config expat libstdc 6 libglib 2 0 0 libgtk 2 0 0 tcl libcairo2 tesh python bc pciutils libatk 1 0 0 tk python libxml2 Isof libnl1 Ubuntu Debian apt get install perl dpkg autotools dev autoconf libtool automakel1 10 automake m4 dkms debhelper tcl tc18 4 chrpath swig graphviz tcl dev tcl8 4 dev tk dev tk8 4 dev bison flex dpatch zlib1 g dev curl libcurl4 gnutls dev python libxml2 libvirt bin lib virt0 libnl dev libglib2 0 dev libgfortran3 automake m4 pkg config libnuma logro tate Debian 8 apt get install libnl 3 200 automake debhelper curl dkms logrotate libglib2 0 0 python libxml2 graphviz tk tcl libvirt bin coreutils pkg config autotools dev flex autoconf pciutils quilt module init tools libvirt0 libstde 6 dpkg libgfortran3 procps Isof libltdl dev gcc dpatch chrpath grep m4 gfortran bison libnl route 3 200 swig perl make 10 Mellanox Technologies Rev 3 0 1 0 1 1 6 Supported HCAs Firmware Versions MLNX OFED Rev 3 0 1 0 1 supports the following Mellanox network adapter cards firmware Versions Table 6 Supported HCAs Firmware Versions HCA Recommended Firmware Rev Additional Firmware Rev Supported Connect IB 10 0100 6440 Rev 10 10 5054 ConnectX 4 12 0100 6440 ConnectX 3 Pro Rev 2 34 5000 Rev 2 33 5100 ConnectX 3 Rev 2 34 5000 Rev 2 33 5100 ConnectX 2 Rev 2 9 1000 Rev 2 9 1000 For
20. C64 Power 7 RHEL CentOS 6 5 x86 64 PPC64 Power 7 RHEL CentOS 6 6 x86 64 PPC64 Power 7 RHEL CentOS 7 0 x86 64 PPC64 Power 7 RHEL CentOS 7 1 x86 64 PPC64 Power 7 PPC64le Power 8 ARM64 ARM is at beta level SLES11 SP2 x86_64 PPC64 Power 7 SLES11 SP3 x86 64 PPC64 Power 7 SLES12 x86_64 PPC64le Power 8 OEL 6 3 x86 64 OEL 6 4 x86 64 OEL 6 5 x86 64 OEL 6 6 x86 64 8 Mellanox Technologies J Rev 3 0 1 0 1 Table 4 Supported Platforms and Operating Systems Operating System Platform Citrix XenServer Host 6 5 1686 Fedora 19 x86 64 PPC64 Power 7 Fedora 21 x86 64 Ubuntu 12 04 x86 64 Ubuntu 14 04 x86 64 PPC64le Power 8 ARM64 ARM is at beta level Ubuntu 14 10 x86 64 PPC64le Power 8 Debian 7 6 x86 64 Debian 8 0 x86 64 kernel 3 16 4 0 a This kernel is supported only when using the Operating Systems stated in the table above to create a new ISO image using minx add kernel support sh script For RPM based Distributions 1f you wish to install OFED on a different kernel you need ae See the MLNX_OFED User Guide for instructions Upgrading MLNX OFED on your cluster requires upgrading all of its nodes to the newest version as well 5 1 4 4 Supported Hypervisors The following are the supported hypervisors in MLNX OFED Rev 3 0 1 0 1 KVM RedHat 6 5 6 6 7 0 7 1 Ubuntu 14 04 Sles11SP3 Xen42 e XenServer6 5 1 4 2 Supported Non Linux
21. Mellanox TECHNOLOGIES Connect Accelerate Outperform Mellanox OFED for Linux Release Notes Rev 3 0 1 0 1 www mellanox com Rev 3 0 1 0 1 NOTE THIS HARDWARE SOFTWARE OR TEST SUITE PRODUCT PRODUCT 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 PRODUCT 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 S
22. OV UD QPs are forced by the Hypervisor to use the base GID i e the GID that the VF sees in its GID entry at its paravirtualized index 0 This is needed for security since UD QPs use Address Vec tors and any GID index may be placed in such a vector including indices not belonging to that VF 14 Attempting to attach a PF to a VM when SR IOV is already enabled on that PF may result in a kernel panic 15 osmtest on the Hypervisor fails when SR IOV is enabled However only the test fails OpenSM will operate correctly with the host The failure reason is that if an mcg is already joined by the host a subse quent join request for that group succeeds automati cally even if the join parameters in the request are not correct This success does no harm 16 If a VM does not support PCI hot plug detaching an mlx4 VF and probing it to the hypervisor may cause the hypervisor to crash 17 QPerf test is not supported on SR IOV guests in Connect IB cards 24 Mellanox Technologies Rev 3 0 1 0 1 Table 25 SR IOV Known Issues Continued Index Description Workaround 18 On ConnectX 3 HCAs with firmware version 2 32 5000 and later SR IOV VPI mode works only with Port 1 ETH and Port 2 IB 19 Occasionally the lspci grep Mellanox com 1 Locate the file mand shows incorrect or partial information due to Slocate pci ids the current pci ids file on the machine 2 M
23. PoIB transmit operation 11 IB MAD Fixed an issue to prevent process starvation due to 2 3 2 0 1 2 3 2 0 5 MAD packet storm Mellanox Technologies 35 J Rev 3 0 1 0 1 Bug Fixes History Table 50 Fixed Bugs List Discovered Fixed in E Dans Deseriptaga in Release Release 12 IPoIB Fixed an issue which prevented the spread of events 2 3 1 0 1 2 3 2 0 0 among the closet NUMA CPU when only a single RX queue existed in the system 13 Returned the CQ to its original state armed to pre 2 3 1 0 1 2 3 2 0 0 vent traffic from stopping 14 Fixed a TX timeout issue in CM mode which 2 1 1 0 0 2 3 2 0 0 occurred under heavy stress combined with ifup ifdown operation on the IPoIB interface 15 mlx4 core Fixed sleeping while atomic error occurred when 2 3 1 0 1 2 3 2 0 0 the driver ran many firmware commands simultane ously 16 mlx4 ib Fixed an issue related to spreading of completion 2 1 1 0 0 2 3 2 0 0 queues among multiple MSI X vectors to allow bet ter utilization of multiple cores 17 Fixed an issue that caused an application to fail 2 3 1 0 1 2 3 2 0 0 when attaching Shared Memory 18 mlx4 en Fixed dmesg warnings NOHZ local soft 2 3 1 0 1 2 3 2 0 0 irq pending 08 19 Fixed erratic report of hardware clock which caused 2 1 1 0 0 2 3 2 0 0 bad report of PTP hardware Time Stamping 20 mlx5 core Fixed race when async
24. UCH DAMAGE Mellanox TECHNOLOGIES Mellanox Technologies Mellanox Technologies Ltd 350 Oakmead Parkway Suite 100 Hakidma 26 Sunnyvale CA 94085 Ofer Industrial Park U S A Yokneam 2069200 www mellanox com Israel Tel 408 970 3400 www mellanox com Fax 408 970 3403 Tel 972 0 74 723 7200 Fax 972 0 4 959 3245 Copyright 2015 Mellanox Technologies All Rights Reserved Mellanox Mellanox logo BridgeX ConnectX Connect IB CoolBox CORE Direct GPUDirect InfiniBridge InfiniHost InfiniScale Kotura Kotura logo MetroX MLNX OS PhyX ScalableHPC SwitchX TestX UFM Virtual Protocol Interconnect Voltaire and Voltaire logo are registered trademarks of Mellanox Technologies Ltd CyPU ExtendX FabricIT FPGADirect HPC X Mellanox Care Mellanox CloudX Mellanox Open Ethernet Mellanox PeerDirect Mellanox Virtual Modular Switch MetroDX NVMeDirect StPU Switch IB Unbreakable Link are trademarks of Mellanox Technologies Ltd All other trademarks are property of their respective owners 2 Mellanox Technologies Rev 3 0 1 0 1 Table of Contents GL CN BOL NY APP POT PP PA tees 1 ENCOFTADES me PT Gila ew Ca as Sais le KAKANTA LG RAEL LGA AA 3 Release Update History 4o o ARRANGE PAP ABA de 5 Chapter OVETYEW 205304 dx ok xh ob GERA Ob AD NG TA ANEK OR DNA 6 1 1 Main Features in This Release 6 1 2 Unsupported Functi
25. User Manual 4 total vfs lt 0 63 gt installation parameter is Use enable sriov installation parame no longer supported ter to burn firmware with SR IOV support The number of virtual functions VFs will be set to 16 For further information please refer to the User Manual 5 When using bonding on Ubuntu OS the ifenslave package must be installed 6 On PPC systems the ib srp module is not installed If your system does not require the ibmvscsi by default since it breaks the ibmvscsi module module run the mlnxofedinstall script with the with srp flag 26 Mellanox Technologies Rev 3 0 1 0 1 Table 29 Installation Known Issues Continued Index Description Workaround 7 MLNX OFED v3 0 1 0 1 installation using yum fails on RH7 1 3 20 Driver Unload Known Issues Table 30 Driver Unload Known Issues Index Description Workaround 1 openibd stop can sometime fail with the error Re run openibd stop Unloading ib cm FAILED ERROR Module ib cm is in use by ib i poib 3 21 UEFI Secure Boot Known Issues Table 31 UEFI Secure Boot Known Issues Index Description Workaround l On RHEL7 and SLES 12 the following error is dis For further information please refer to the played in dmesg if the Mellanox s x 509 Public Key User Manual section Enrolling Mellanox s is not added to the system x 509 Public Key On your Systems
26. Virtual Machines The following are the supported Non Linux InfiniBand only Virtual Machines in MLNX OFED Rev 3 0 1 0 1 e Windows Server 2012 R2 e Windows Server 20012 Windows Server 2008 R2 Mellanox Technologies 9 J Rev 3 0 1 0 1 Overview 1 5 Hardware and Software Requirements The following are the hardware and software requirements of MLNX OFED Rev 3 0 1 0 1 Linux operating system Administrator privileges on your machine s Disk Space IGB For the OFED Distribution to compile on your machine some software packages of your operat ing system OS distribution are required To install the additional packages run the following commands per OS Table 5 Additional Software Packages Operating System Required Packages Installation Command RHEL OEL Fedora yum install perl pciutils python gcc gfortran libxml2 python tesh libnl 1686 libnl expat glib2 tcl libstdc bc tk gtk2 atk cairo numactl pkgconfig XenServer yum install perl pciutils python libxml2 python libnl expat glib2 tcl bc libstdc tk pkgconfig SLES 10 SP3 zypper install pkgconfig pciutils python libxml2 python libnl Isof expat glib2 tcl libstdc bc tk SLES 11 SP2 zypper install perl pciutils python libnl 32bit libxml2 python tcsh libnl libstde 46 expat glib2 tcl bc tklibcurl4 gtk2 atk cairo pkg config SLES 11 SP3 zypper install perl pciutils python libnl 32bit libxml2 python tesh libstdc 43 libnl expat glib2 tcl bc tk libcurl
27. ad input length 0x50 syndrome 0x9074aa When working with Connect IB firmware v10 10 5054 the following message would appear in driver start command failed status bad system state 0x4 syndrome 0x408b33 The message can be safely ignored Upgrade Connect IB firmware to the latest available version Port rate and port speed values are incorrect in RoCE mode in ConnectX 4 Changing the link speed is not supported in Ethernet driver when connected to a ConnectX 4 card Changing the RX queues number is not supported in Ethernet driver when connected to a ConnectX 4 card Error counters such as CRC error counters RX out range length error counter are missing in the ConnectX 4 Ethernet driver 3 27 Ethernet Performance Counters Known Issues Table 37 Ethernet Performance Counters Known Issues Index Description Workaround l In a system with more than 61 VFs the 62nd VF and onwards is assigned with the SINKQP counter and as a result will have no statistics and loopback pre vention functionality for SINK counter Since each VF tries to allocate 2 more QP counter for its RoCE traffic statistics in a system with less than 61 VFs if there is free resources it receives new counter otherwise receives the default counter which is shared with Ethernet In this case RoCE statistics is not available Mellanox Technologies 29 J Rev 3 0 1 0 1 Known Issues
28. anually update the file according to the lat est version available online at https pci ids ucw cz v2 2 pci ids This file can also be downloaded 20 SR IOV is not supported XenServer 6 5 21 SR IOV is not supported in AMD architecture 3 16 Port Type Management Known Issues Table 26 Port Type Management Known Issues Index Description Workaround l OpenSM must be stopped prior to changing the port protocol from InfiniBand to Ethernet 2 After changing port type using connectx port Use udev rules for persistent naming configu config interface ports names can be changed For ration example ibl gt ib0 if port changed to be Ethernet For further information please refer to the port and port2 left IB User Manual 3 A working IP connectivity between the RoCE devices is required when creating an address handle or modifying a QP with an address vector 4 IPv4 multicast over RoCE requires the MGID for mat to be as follow ffff Multicast IPv4 Address 5 IP routable RoCE does not support Multicast Lis tener Discovery MLD therefore multicast traffic over IPv6 may not work as expected 6 DIF When running IO over FS over DM during unstable ports block layer BIOS merges may cause false DIF error Mellanox Technologies 25 J Rev 3 0 1 0 1 Known Issues 3 17 Flow Steering Known Issues Table 27 Flow Steering Known Issues Index
29. check the following e Num rings min num cores on that device 16 Ring size 512 by default it is module parameter UD memory 2 num rings ring size 8K CM memory ring size 64k Total memory UD mem CM mem Connect IB does not reach the bidirectional line rate Optimize the IPoIB performance in Connect IB cat sys class net interface device local cpus sys class net interface queues rx 0 rps cpus Ifthe CONNECTED MODE no parameter is set to no or missing from the ifcfg file for Connect IB IPoIB interface then the service network restart will hang Setthe CONNECTED MODE yes parameter in the ifcfg file for Connect IBW interface Joining a multicast group in the SM using the RDMA CM API requires IPoIB to first join the broadcast group 14 Mellanox Technologies Rev 3 0 1 0 1 Table 11 IPoIB Known Issues Continued Index Description Workaround 11 Whenever the IOMMU parameter is enabled in the To avoid such issue kernel it can decrease the number of child interfaces e Decrease the amount of the RX receive buf on the device according to resource limitation fers module parameter the default is 512 The driver will stuck after unknown amount of child Decrease the number of RX rings sys fs or interfaces creation ethtool in new kernels e Avoid using IOMMU if not required For further information please see https access redhat com
30. ching or detaching a function to or from the guest Mellanox Technologies 23 J Rev 3 0 1 0 1 Known Issues Table 25 SR IOV Known Issues Continued Index Description Workaround 7 When detaching a VF without shutting down the Shut down the driver in the VM before detach driver from a VM and reattaching it to another VM ing the VF with the same IP address for the Mellanox NIC RoCE connections will fail 8 Enabling SR IOV requires appending the intel iommu on option to the relevant OS in file boot grub grub conf Without that SR IOV cannot be loaded 9 On various combinations of Hypervisor OSes and Attach detach VFs to from a VM only while Guest OSes an issue might occur when attaching that VM is down detaching VFs to a guest while that guest is up and running 10 When working with SR IOV in Xen 4 2 virtualiza tion platform only the built in xen pciback driver should be loaded The xen pciback module in dom0 should not be loaded as loading them simultaneously may cause interrupts loss and cause the driver to enter the reset flow 11 The known PCI BDFs for all VFs in kernel com mand line should be specified by adding xen pci back hide For further information please refer to http wiki xen org wiki Xen_PCI_Passthrough 12 The inbox qemu version 2 0 provided with Ubuntu 14 04 does not work properly when more than 2 VMs are run over an Ubuntu 14 04 Hypervisor 13 SR I
31. ckage Added to the ibdiagnet tool the ibdi agnet2 mInx cntrs option to enable reading of Mellanox diagnos tic counters Bug Fixes See Bug Fixes History on page 35 2 3 1 0 1 OpenSM Added Routing Chains support with Minhop UPDN FTree DOR Torus 2QoS Added double failover elimination When the Master SM is turned down for some reason the Standby SM takes ownership over the fabric and remains the Master SM even when the old Master SM is brought up to avoid any unneces sary re registrations in the fabric To enable this feature set the master sm priority parameter to be greater than the sm priority parameter in all SMs in the fabric Once the Standby SM becomes the Master SM its priority becomes equal to the master sm priority So that addi tional SM handover is avoided Default value of the mas ter sm priority is 14 To disable this feature set the master sm priority in opensm conf to 0 Added credit loop free unicast multicast updn ftree routing Added multithreaded Minhop UPDN DOR routing RoCE Added IP routable RoCE modes For further information please refer to the MLNX OFED User Manual Installation Added apt get installation support 40 Mellanox Technologies Rev 3 0 1 0 1 Table 51 Change Log History Release Category Description Ethernet Added support for arbitrary UDP port for VXLAN From upstream 3 15 rcl and onward it is possible t
32. e eee eR RUD IRR RUE MEA ER 19 Table 16 ABI Compatibility Known Issues 2 ee enna 20 Table 17 System Time Known Issues 00 ccc cette ence eens 20 Table 18 ConnectX 3 Adapter Cards Family Known Issues 002 c eee eee 20 Table 19 Verbs Known Issues 2 hh ra 20 Table 20 Resiliency Known Issues 0 0 0 eect an 21 Table 21 Driver Start Known Issues 0 0 0 0 cee teen en eens 21 Table 22 Performance Tools Known Issues 0 0 0 0 00 ccc ttt 22 Table 23 Performance Known Issues 0 0 0 0 ccc eee n teen nen 22 Table 24 Connection Manager CM Known Issues 000 cece eee enn eens 23 Table 25 SR IOV Known Issues 0 c cc eh e 23 Table 26 Port Type Management Known Issues 0 000 c cece teens 25 Table 27 Flow Steering Known Issues cece ect ene n en ens 26 Table 28 Quality of Service Known Issues 00 cece een teen as 26 Table 29 Installation Known Issues n tte ne eas 26 Table 30 Driver Unload Known Issues 00 0c n n 27 Table 31 UEFI Secure Boot Known Issues 00 00 0 ccc cece enn eas 27 Table 32 Fork Support Known Issues 0 00 00 ce cette ene n teens 28 Table 33 ISCSI over IPoIB Known Issues 0 0 0 0 000 ceenenenenens 28 Table 34 MLNX OFED Sources Known Issues 0 00 00 cen een nena 28 Table 35 InfiniBand Utilities Known Issues 0 0 0 0 ccc eh 28 Mellanox Technologies 3 J Rev 3 0 1 0 1 Table 36 mlx5 Dri
33. ece eee 22 3 13 Performance Known Issues 22 3 14 Connection Manager CM Known Issues 0000 e eee eee eee 23 3 15 SR IOV Known Issues 0 ccc eee ene eens 23 3 16 Port Type Management Known Issues 000 eee eee 25 3 17 Flow Steering Known Issues nes 26 3 18 Quality of Service Known Issues 0 0000s 26 3 19 Installation Known Issues 0000 cence ene e eee 26 3 20 Driver Unload Known Issues 000 ccc cee ce nee 27 3 21 UEFI Secure Boot Known Issues 0 0 cee eee eee 27 3 22 Fork Support Known Issues 0 00 0 eee en 28 3 23 ISCSI over IPoIB Known Issues io niac 0 00 cc ce e 28 Mellanox Technologies 1 J Rev 3 0 1 0 1 3 24 MLNX OFED Sources Known Issues 0 000 cence ene 28 3 25 InfiniBand Utilities Known Issues lesse ees 28 3 26 mlx5 Driver Known Issues 00 cece eee enn ees 29 3 27 Ethernet Performance Counters Known Issues 00 0 cece eens 29 3 28 Uplinks Known Issues lesse 30 3 29 Pools Know nilSsues sasie supe Near are edet aeter ewe avon ts 30 3 30 Resources Limitation Known Issues 31 3 31 RoCE Known Issues 0 0 cece ete een ene E G 31 3 32 Storage Known ISSUES pienen t euan ene eee 33 3 33 SRP Knownlssucss ikke E VER as eee eee Dr PS 33 3 34 SRP Interop Known Issues 0 cece eee eens 33 3 35 DDN Storage Fusion 10000 Target Known Issues a 33 3 36 Oracle Sun ZFS Storage 7420 Known Is
34. eering are ConnectX 3 HCA capability Mellanox Technologies 45 J Rev 3 0 1 0 1 API Change Log History 6 API Change Log History Table 52 API Change Log History Release Name Description Rev 2 4 1 0 0 libibverbs Added the following verbs interfaces e ibv create flow e ibv_destroy flow e ibv exp use priv env e ibv exp setenv Rev2 3 1 0 1 libibverbs e ibv exp rereg mr Added new API for memory region re reintegration For futher information please refer to MLNX OFED User Manual Added to the experimental API ibv exp post send the following opcodes e IBV EXP WR EXT MASKED ATOMIC CMP AND SWP e IBV EXP WR EXT MASKED ATOMIC FETCH AND ADD e IBV EXP WR NOP and these completion opcodes e IBV EXP WC MASKED COMP SWAP e IBV EXP WC MASKED FETCH ADD Rev2 2 1 0 1 libibverbs The following verbs changed to align with upstream libib verbs ibv reg mr ibv access flags changed ibv post send opcodes and send flags changed and wr fields removed task op dc and bind mw ibv query device capability flags changed ibv poll cq opcodes and wc flags changed e ibv modify qp mask bits changed ibv create qp ex create flags field removed The following verbs removed to align with upstream libib verbs ibv bind mw ibv post task ibv query values ex ibv query device ex ibv poll cq ex ibv reg shared mr ex ibv reg shared mr ibv modify c
35. erfaces LRO needs to be set to OFF manu Run ethtool K ethX lro off ally when there is a bond configured on Mellanox interfaces with a Bridge over that bond 13 On SLES12 the bonding interface over Mellanox 1 Set STARTMODE hotplug in the bonding Ethernet slave interfaces does not get IP address slave s ifcfg files after reboot More details can be found in the SUSE doc umentations page https www suse com documentation sles 12 book sle admin page documentation sles 12 book sle admin data sec bond html 2 Enable the nanny service to support hot plugging Open the etc wicked common xml file Change lt use nanny gt false lt use nanny gt to lt use nanny gt true lt use nanny gt 3 Run systemctl restart wickedd ser vice wicked 14 ethtool x command does not function in SLES OS 15 Ethertype proto 0x806 not support by ethtool 3 3 General Known Issues Table 13 General Known Issues Index Description Workaround 1 On ConnectX 2 ConnectX 3 Ethernet adapter cards N A there is a mismatch between the GUID value Please use the GUID value returned by the fab returned by firmware management tools and that ric driver utilities not Oxfffff returned by fabric driver utilities that read the GUID via device firmware e g using ibstat MIxburn flint return Oxffff as GUID while the utilities return a value derived from the MAC address For all driver fi
36. eters e ibv exp create cq Add resource domain to the verb parameters Mellanox Technologies 13 J Rev 3 0 1 0 1 Known Issues 3 Known Issues The following is a list of general limitations and known issues of the various components of this Mellanox OFED for Linux release 3 1 IPoIB Known Issues Table 11 IPoIB Known Issues Index Description Workaround l When user increases receive send a buffer it might consume all the memory when few child s interfaces are created The size of send queue in Connect IB cards cannot exceed 1K In 32 bit devices the maximum number of child interfaces that can be created is 16 Creating more that might cause out of memory issues In RHEL7 0 the Network Manager can detect when the carrier of one of the IPoIB interfaces is OFF and can decide to disable its IP address Set ignore carrier for the corresponding device in NetworkManager conf For further information please refer to man NetworkManager conf IPoIB interface does not function properly if a third party application changes the PKey table We recommend modifying PKey tables via OpenSM Fallback to the primary slave of an IPoIB bond does not work with ARP monitoring https bugs open fabrics org show_bug cgi id 1990 Out of memory issue might occur due to overload of interfaces created To calculate the allowed memory per each IPoIB interface
37. fa verbs h 72 rdma c 1706 warning ibv create x rc srq is deprecated declared at usr include infiniband ofa verbs h 89 These warnings can be safely ignored 2 XRC is not functional in heterogeneous clusters containing non Mellanox HCAs 3 XRC options do not work when using qperf tool Use perftest instead 4 Out of memory issue might occur due to overload of XRC receive QP with non zero receive queue size created XRC QPs do not have receive queues Mellanox Technologies 19 J Rev 3 0 1 0 1 Known Issues 3 6 ABI Compatibility Known Issues Table 16 ABI Compatibility Known Issues Index Description Workaround 1 MLNX_OFED v2 3 1 0 1 is not ABI compatible Recompile the application over the new with previous MLNX_OFED OFED versions MLNX_OFED version 3 7 System Time Known Issues Table 17 System Time Known Issues Index Description Workaround l Loading the driver using the openibd script when no InfiniBand vendor module is selected for example mlx4_ib may cause the execution of the sbin start_udev script In RedHat 6 x and OEL6 x this may change the local system time 3 8 ConnectX 3 Adapter Cards Family Known Issues Table 18 ConnectX 3 Adapter Cards Family Known Issues Index Description Workaround l Using RDMA READ with a higher value than 30 Do not set the value of SGEs higher than 30 SGEs in the WR might lead to
38. havior is possible even though the default GID is configured regardless the presence of the IPv6 address 10 Using IPv6 link local address GID0 when VLANs are configured is not supported 11 Using GID index 0 the default GID on port 2 is currently not supported on kernel 3 14 and below 12 RoCE is at beta level in ConnectX 4 The following transports are not supported Unreliable Datagram UD e Dynamically Connected DC 13 Enslaving a Mellanox device to a bond with already 1 Enslave the Mellanox device configured IPs or configured upper devices pre 2 Configure IP devices vents these IPs from being configured as GIDs 14 ibv create ah from wc is not supported for multicast messages 32 Mellanox Technologies Rev 3 0 1 0 1 3 32 Storage Known Issues Table 42 Storage Known Issues Index Description Workaround l Older versions of rescan scsi bus shmaynot If encountering such issues it is recommended recognize some newly created LUNs to use the c flag 3 33 SRP Known Issues Table 43 SRP Known Issues Index Description Workaround 1 MLNX_OFED SRP installation breaks the ibmvstgt and ibmvscsi symbol resolution in RHEL7 0 3 34 SRP Interop Known Issues Table 44 SRP Interop Known Issues Index Description Workaround l The driver is tested with Storage target vendors rec ommendations for mult
39. ht appear in kernel log IOMMU related issue 4 Transmit timeout might occur on RH6 3 asa result of lost interrupt OS issue In this case the follow ing message will be shown in dmesg do IRQ 0 203 No irq handler for vector irq 1 5 Mixing ETS and strict QoS policies for TCs in 40GbE ports may cause inaccurate results in band width division among TCs 6 Creating a VLAN with user priority gt 4 on ConnectX 2 HCA is not supported 7 Affinity hints are not supported in Xen Hypervisor To overcome this issues run an irqblancer issue This causes a non optimal IRQ set_irq_affinity sh eth lt x gt affinity 8 Reboot might hang in SR IOV when using the probe vf parameter with many Virtual Func tions The following message is logged in the kernel log waiting for eth to become free Usage count 1 9 In ConnectX 2 RoCE UD QP does not include VLAN tags in the Ethernet header Mellanox Technologies 17 J Rev 3 0 1 0 1 Known Issues Table 12 Ethernet Known Issues Continued Index Description Workaround 10 VXLAN may not be functional when configured over Linux bridge in RH7 0 or Ubuntu1 4 04 The issue 1s within the bridge modules in those ker nels In Vanilla kernels above 3 16 issues is fixed 11 In RH6 4 ping may not work over VLANs that are configured over Linux bridge when the bridge has a mlx4 en interface attached to it 12 The int
40. iew These are the release notes of Mellanox OFED for Linux Driver Rev 3 0 1 0 1 Mellanox OFED is a single Virtual Protocol Interconnect VPI software stack and operates across all Mellanox network adapter solutions supporting the following uplinks to servers ConnectX 4 InfiniBand SDR QDR FDR EDR Ethernet 10GigE 25GigE 40GigE 50GigE and 100GigE at Beta level ConnectX 3 ConnectX 3 Pro InfiniBand SDR QDR FDR10 FDR Ethernet 10GigE 40GigE and 56GigE PCI Express 2 0 2 5 or 5 0 GT s PCI Express 3 0 8 GT s 1 1 Main Features in This Release MLNX_OFED Rev 3 0 1 0 1 provides the following features Table 2 MLNX_OFED Rev 3 0 1 0 1 Main Features Feature Description HCAs Added support for ConnectX 4 Single Dual Port Adapter supporting 100Gb s RoCE per GID RoCE per GID provides the ability to use different RoCE versions modes simultaneously RoCE Link Aggregation RoCE LAG ConnectX 3 ConnectX 3 Pro only RoCE Link Aggregation available in kernel 4 0 only provides failover and link aggregation capabilities for mlx4 device physical ports In this mode only one IB port that represents the two physical ports is exposed to the applica tion layer Resource Domain Experimental Verbs Resource domain is a verb object which may be associated with QP and or CQ objects on creation to enhance data path performance Alias GUID Support in InfiniBand Enables the que
41. info Sockets Direct Protocol SDP Sockets Direct Protocol SDP is a byte stream transport protocol that provides TCP stream semantics and utilizes InfiniBand s advanced protocol offload capabilities Scalable Subnet Administration SSA The Scalable Subnet Administration SSA solves Subnet Administrator SA scalability problems for Infiniband clusters It distributes the needed data to perform the path record calculation needed for a node to connect to another node and caches these locally in the compute cli ent nodes SSA requires AF IB address family support 3 12 28 4 kernel and later a SSA is tested on SLES 12 only x86 64 architecture For additional information on the new features please refer to the MLNX OFED User Manual 1 2 Unsupported Functionality Features The following are the unsupported functionalities features in MLNX OFED Rev 3 0 1 0 1 pm qos API Power Management Adaptive Interrupt Moderation Algorithm Virtual Guest Tagging VGT 1 3 Content of Mellanox OFED for Linux Mellanox OFED for Linux software contains the following components Table 3 Mellanox OFED for Linux Software Components Components Description OpenFabrics core and ULPs InfiniBand and Ethernet HCA drivers mlx4 mlx5 core Upper Layer Protocols IPoIB SRP iSER and iSER Initiator and Target Mellanox Technologies 7 J Rev 3 0 1 0 1 Overview Table 3 Mellanox OFED for Lin
42. ing mode failure when enslaving 2 0 3 0 0 2 1 1 0 0 Mellanox interfaces 44 Fixed leak of mapped memory 2 0 3 0 0 2 1 1 0 0 45 Fixed TX timeout in Ethernet driver 2 0 2 0 5 2 0 3 0 0 46 Fixed ethtool stats report for Virtual Functions 2 0 2 0 5 2 0 3 0 0 47 Fixed an issue of VLAN traffic over Virtual Machine 2 0 2 0 5 2 0 3 0 0 in paravirtualized mode 48 Fixed ethtool operation crash while interface down 2 0 2 0 5 2 0 3 0 0 49 IPoIB Fixed memory leak in Connected mode 2 0 2 0 5 2 0 3 0 0 50 Fixed an issue causing IPoIB to avoid pkey value 0 2 0 2 0 5 2 0 3 0 0 for child interfaces 38 Mellanox Technologies Rev 3 0 1 0 1 5 Change Log History Table 51 Change Log History Release Category Description 2 4 1 0 4 Bug Fixes See Bug Fixes History on page 35 2 4 1 0 0 mlx4 en net Added support for Ethtool speed control and advertised link mode device Ethtool Added ethtool txvlan control for setting ON OFF hardware TX VLAN insertion ethtool k txvlan on off Ethtool report on port parameters improvements Ethernet TX packet rate improvements RoCE RoCE uses now all available EQs and not only the 3 legacy EQs InfiniBand IRQ affinity hints are now set when working in InfiniBand mode Virtualization VXLAN fixes and performance improvements libmlx4 amp libmlx5 Improved message rate of short massages libmlx5 Added Con
43. ipath conf extensions ZFS DDN TMS Nimbus NetApp 3 35 DDN Storage Fusion 10000 Target Known Issues Table 45 DDN Storage Fusion 10000 Target Known Issues Index Description Workaround 1 DDN does not accept non default P_Key connection establishment 3 36 Oracle Sun ZFS Storage 7420 Known Issues Table 46 Oracle Sun ZFS Storage 7420 Known Issues Index Description Workaround 1 Ungraceful power cycle of an initiator connected with Targets DDN Nimbus NetApp may result in temporary stale connection messages when initia tor reconnects Mellanox Technologies 33 J Rev 3 0 1 0 1 Known Issues 3 37 ISER Initiator Known Issues Table 47 iSER Initiator Known Issues Index Description Workaround 1 On SLES OSs the ib iser module does not load Add a dummy interface using iscsiadm on boot e iscsiadm m iface I ib iser o new iscsiadm m iface I ib iser o update n iface trans port name v ib iser 2 Ubuntu12 requires update of user space open iscsi to v2 0 873 3 The initiator does not respect interface parameter Configure each interface on a different subnet while logging in 4 iSCSID v2 0 873 can enter an endless loop on bind error 5 iSCSID may hang if target crashes during logout sequence reproducible with TCP 6 SLES12 Logging in with PI disabled followed by a log out and re log in with PI enabled witho
44. nectX 4 device 4114 to the list of supported devices hca table Storage Added iSER Target driver Ethernet net device New adaptive interrupt moderation scheme to improve CPU utili Zation RSS support of fragmented IP datagram Connect IB Vir Added Connect IB Virtual Function to the list of supported tual Function devices 2 3 2 0 5 mlx5 core Added the following files under sys class infiniband mlx5 0 mr cache rel timeout Defines the minimum allowed time between the last MR creation to the first MR released from the cache When rel timeout 1 MRs are not released from the cache rel imm Triggers the immediate release of excess MRs from the cache when set to 1 When all excess MRs are released from the cache rel imm is reset back to 0 Bug Fixes See Bug Fixes History on page 35 2 3 2 0 1 Bug Fixes See Bug Fixes History on page 35 Mellanox Technologies 39 J Rev 3 0 1 0 1 Change Log History Table 51 Change Log History Release Category Description 2 3 2 0 0 Connect IB Added Suspend to RAM S3 Reset Flow Added Enhanced Error Handling for PCI EEH a recovery strat egy for I O errors that occur on the PCI bus Register Contigu Added the option to ask for a specific address when the register ous Pages memory is using contiguous page mlx5 core Moved the mr cache subtree from debugfs to m1x5 ib while preserving all its semantics InfiniBand Utilities Updated the ibutils pa
45. nterface name gt parameter Hence changing the CONNECT ED_MODE in the ifcfg file will cause a failure in the interface bring up Either disable the Network Manager or add DEVICE lt interface name gt to the inter face s ifcfg file 21 In RedHat7 1 kernel 3 10 0 299 when sending ICMP TCP UDP traffic over Connect IB ConnectX 4 in UD mode the packets are dropped with the following error UDP bad checksum Use Connected Mode CM in IPoIB for Con nectX 4 with RedHat7 1 kernel 3 10 0 299 22 ifdown command does not function in RH7 1 16 Mellanox Technologies Rev 3 0 1 0 1 3 2 Ethernet Known Issues Ethernet Know Issues are applicable to ConnectX 3 ConnectX 3 Pro only ae Table 12 Ethernet Known Issues Index Description Workaround l When creating more than 125 VLANs and SR IOV mode is enabled a kernel warning message will be printed indicating that the native VLAN is created but will not work with RoCE traffic kernel warning m1x4 core 0000 07 00 0 vhcr command ALLOC RES 0xf00 slave 0 in param Ox7e in mod 0x107 op mod 0x1 failed with error 0 status 28 2 Kernel panic might occur during FIO splice in ker Use kernel v2 6 34 rc4 nels which provides the following solution before 2 6 34 rc4 baff42a net Fix oops from tcp collapse when using splice 3 In PPC systems when QoS is enabled a harmless Kernel DMA mapping error messages mig
46. o use arbitrary UDP port for VXLAN This feature requires firmware version 2 32 5100 or higher Additionally the following kernel configuration option CON FIG MLX4 EN VXLAN y must be enabled MLNX_OFED no longer changes the OS sysctl TCP parameters Added Explicit Congestion Notification ECN support Added Flow Steering AO simplified steering support Added RoCE v2 support 2 3 1 0 1 InfiniBand Network Added Secure host to enable the device to protect itself and the subnet from malicious software Added User Mode Memory Registration UMR to enable the usage of RDMA operations and to scatter the data at the remote side through the definition of appropriate memory keys on the remote side Added On Demand Paging ODP a technique to alleviate much of the shortcomings of memory registration Added Masked Atomics operation support Added Checksum offload for packets without L4 header support Added Memory re registration to allow the user to change attri butes of the memory region Resiliency Added Reset Flow for ConnectX 3 SR IOV support SR IOV Added Virtual Guest Tagging VGT an advanced mode of Vir tual Guest Tagging VGT in which a VF is allowed to tag its own packets as in VGT but is still subject to an administrative VLAN trunk policy Ethtool Added Cable EEPROM reporting support Disable Enable ethernet RX VLAN tag striping offload via ethtool
47. odify qp ex Mellanox Technologies 47 J Rev 3 0 1 0 1 API Change Log History Table 52 API Change Log History Release Name Description Rev 2 1 1 0 0 Verbs Experimental API Verbs experimental API defines MLNX OFED APIs ibv exp create dct extension scheme which is ibv exp destroy dct similar to the Verbs exten e ibv exp query dct sion APT This extension provides a way to introduce new features before they are integrated into the formal OFA API and to the upstream kernel and libs Rev 2 0 3 0 0 XRC The following verbs have become deprecated struct ibv xrc domain ibv open xrc domain ibv exp create qp ibv exp query device struct ibv srq ibv create xrc srq int ibv close xrc domain int ibv create xrc rcv qp int ibv modify xrc rcv qp int ibv query xrc rcv qp e int ibv reg xrc rcv qp int ibv unreg xrc rcv qp Rev 2 0 2 0 5 Libibverbs Extended speeds e Missing the ext active speed attribute from the struct ibv port attr e Removed function ibv ext rate to int Added functions ibv rate to mbps and mbps to ibv rate Libibverbs Raw QPs QP types IBV OPT RAW PACKET and IBV_QPT RAW ETH are not supported Libibverbs Contiguous e Added Contiguous pages support pages e Added function ibv_reg shared mr Libmverbs The enumeration IBV M WR CALC was renamed to IBV M WR CALC SEND Theenumeration IBV M WR WRITE WITH IMM was added Inthe st
48. official firmware versions please see http www mellanox com content pages php pg firmware download 1 7 Compatibility MLNX OFED Rev 3 0 1 0 1 is compatible with the following Table 7 MLNX OFED Rev 3 0 1 0 1 Compatibility Matrix Mellanox Product Description Version MLNX OS MSX6036 w w MLNX OS version 3 3 4304 Grid Director 4036 w w Grid Director version 3 9 1 985 FabricIT EFM 1S5035 w w FabricIT EFM version 1 1 3000 FabricIT BXM MBX5020 w w FabricIT BXM version 2 1 2000 Unified Fabric Manager UFM v4 8 MXM v3 2 HPC X UPC v2 18 0 HPC X OpenSHMEM v1 8 3 FCA v2 5 and v3 1 HPC X MPI v1 8 3 MVAPICH v2 0 a MLNX OFED Rev 3 0 1 0 1 was tested with this switch however additional switches might be supported as well 1 8 RoCE Modes Matrix The following is RoCE modes matrix Table 8 RoCE Modes Matrix Software Stack Inbox Distribution RoCEv1 Layer 2 Supported as of Version RoCEv2 Layer 3 Supported as of Version RoCEv1 amp RoCEv2 Layer 3 Supported as of Version MLNX OFED 2 1 x x x 2 3 X X X 3 0 x x x Kernel org 3 14 RHEL 6 6 7 0 Mellanox Technologies 11 J Rev 3 0 1 0 1 Overview Table 8 RoCE Modes Matrix Software Stack RoCEv1 Layer 2 RoCEv2 Layer 3 RoCEv1 amp RoCEv2 Layer 3 Inbox Distribution Supported as of Version Supported as of Version Supported as of Version SLES 12
49. onality Features a 7 1 3 Content of Mellanox OFED for Linux 0 0 0 a 7 1 4 Supported Platforms and Operating Systems an 8 1 4 1 Supported Hypervisors 00 00 cc een eee eee ees 9 1 4 2 Supported Non Linux Virtual Machines 9 1 5 Hardware and Software Requirements a 10 1 6 Supported HCAs Firmware Versions 00 eee ee e 11 1 7 Compatibility ee entr ENNA AL PAN RAE oda ales 11 ESS ROCE Modes Matrix s eoe tere E Lr OV SAT Bw EE VR SA 11 Chapter 2 Changes in Rev 3 0 1 0 1 From Rev 2 4 1 0 0 13 2 1 API Changes in MLNX OFED Rev 3 0 1 0 1 2 20 0 2c cece eee 13 Chapter 3 Knownlssu S ois ns KUALA SAKA eh RSENS BOSE See eee OES ee eee se 14 3 1 IPoIB Known ISSUES xeu KAWANG oot eke eis CREDI ER E MUR e eR a 14 3 2 Ethernet Known Issues 00 a EE e res 17 3 3 General Knownilssuess 345 se Gu RR GG CENE NE 18 3 4 eIPoIB Known Issues gd ru PNG na NAN eee eee ws erg LA 19 3 5 ARC Known Issues Naya Wagi na BAN eerte t eme ate ee epa n que 19 3 6 ABI Compatibility Known Issues 0 0 0 ccc cee ees 20 3 7 System Time Known Issues cee een ene 20 3 8 ConnectX 3 Adapter Cards Family Known Issues 0 005 20 3 9 Verbs Known Issues 0 00 e a a eee n enn AE 20 3 10 Resiliency Known Issues 21 3 11 Driver Start Known Issues 000 ccc cence nee 21 3 12 Performance Tools Known Issues 00 c
50. q ibv create cq ex e ibv modify qp ex 46 Mellanox Technologies Rev 3 0 1 0 1 Table 52 API Change Log History Release Name Description Rev 2 2 1 0 1 Verbs Experimental API The following experimental verbs added replacing the removed extended verbs e ibv exp bind mw e ibv exp post task e ibv exp query values e ibv exp query device e ibv exp poll cq e ibv exp reg shared mr e ibv exp modify cq e ibv exp create cq e ibv exp modify qp New experimental verbs e ibv exp arm dct ibv exp query port e jbv exp create flow e ibv exp destroy flow e ibv exp post send ibv exp reg mr e ibv exp get provider func Rev 2 1 1 0 0 8 Dynamically Connected DC The following verbs were added e struct ibv dct ibv exp create dct struct ibv context context struct ibv ex p dct init attr attr 7 e int ibv exp destroy dct struct ibv dct dct int ibv exp query dct struct ibv dct dct struct ibv exp dct attr attr Verbs Extension API ibv post task Verbs extension API defines ibv query values ex OFA APIs extension scheme ibv query device ex to detect ABI compatibility ibv create flow and enable backward and for ibv destroy flow ward compatibility support ibv poll cq ex e ibv_reg shared mr ex e ibv open xrcd e ibv close xrcd e ibv modify cq e ibv create srq ex e ibv get srq num e ibv create qp ex e ibv create cq ex e ibv open qp e ibv m
51. rmware software purposes the latter value should be used 2 On rare occasions under extremely heavy MAD traffic MAD Management Datagram storms might cause soft lockups in the umad layer 18 Mellanox Technologies Rev 3 0 1 0 1 3 4 elPolB Known Issues Table 14 elPoIB Known Issues Index Description Workaround l On rare occasions upon driver restart the following message is shown in the dmesg cannot create duplicate filename class net eth ipoib interfaces 2 No indication is received when eIPoIB is non func Run ps ef grep ipoibd to verify its tional functionality 3 eIPoIB requires libvirtd python 4 eIPoIB supports only active backup mode for bond ing 5 eIPoIB supports only VLAN Switch Tagging VST mode on guests 6 IPv6 is currently not supported in eIPoIB 7 eIPoIB cannot run when Flow Steering is enabled 8 eIPoIB daemon requires the following libs in order to run python libxml2 libvirt bin libvirt0 9 The eIPoIB driver in ConnectX 3 and Connect IB is currently at beta level 3 5 XRC Known Issues Table 15 XRC Known Issues Index Description Workaround B Legacy API is deprecated thus when recompiling applications over MLNX OFED v2 0 3 x x warn ings such as the below are displayed rdma c 1699 warning ibv open xrc do main is deprecated declared at usr include infiniband o
52. ructure ibv m send wr the union wr send was renamed to wr calc send and wr rdma was added The enumerations IBV M WQE CAP CALC RD MA WRITE WITH IMM was added The following enumerations were renamed From IBV M WQE SQ ENABLE CAP to IBV M WOE CAP SO ENABLE From IBV M WQE RQ ENABLE CAP to IBV M WOE CAP RO ENABLE I From IBV M WQE CQE WAIT CAP to IBV M WOE CAP CQE WAIT From IBV M WQE CALC CAP fo IBV M WQE CAP CALC SEND 48 Mellanox Technologies
53. ry_gid verb to return the admin desired value instead of the value that was approved by the SM to prevent a case where the SM is unreachable or a response is delayed or if the VF is probed into a VM before their GUID is registered with the SM Denial Of Service DOS MAD Prevention Denial Of Service MAD prevention is achieved by assign ing a threshold for each agent s RX Agent s RX threshold provides a protection mechanism to the host memory by limiting the agents RX with a threshold 1 56 GbE is a Mellanox propriety link speed and can be achieved while connecting a Mellanox adapter cards to Mellanox SX10XX switch series or connecting a Mellanox adapter card to another Mellanox adapter card 6 Mellanox Technologies J Rev 3 0 1 0 1 Table 2 MLNX OFED Rev 3 0 1 0 1 Main Features Feature Description QoS per VF Rate Limit per VF Virtualized QoS per VF supported in ConnectX 3 Con nectX 3 Pro adapter cards only with firmware v2 33 5100 and above limits the chosen VFs throughput rate limita tions Maximum throughput The granularity of the rate limitation is 1Mbits Ignore Frame Check Sequence FCS Errors Upon receiving packets the packets go through a checksum validation process for the FCS field If the validation fails the received packets are dropped Using this feature enables you to choose whether or not to drop the frames in case the FCS is wrong and use the FCS field for other
54. s major performance improvements when IOMMU is enabled Added Port level QoS support IPoIB Reduced memory consumption Limited the number TX and RX queues to 16 Default IPoIB mode is set to work in Datagram except for Con nect IB adapter card which uses IPoIB with Connected mode as default Rev 2 0 3 0 0 Storage ISER at GA level 44 Mellanox Technologies Rev 3 0 1 0 1 Table 51 Change Log History Release Category Description Rev 2 0 2 0 52 Virtualization SR IOV for both Ethernet and InfiniBand at Beta level Ethernet Network RoCE over SR IOV at Beta level eIPoIB to enable IPoIB in a Para Virtualized environment at Alpha level Ethernet Performance Enhancements NUMA related and others for 10G and 40G Ethernet Time Stamping at Beta level Flow Steering for Ethernet and InfiniBand at Beta level Raw Eth QPs e Checksum TX RX Flow Steering InfiniBand Net Contiguous pages work Internal memory allocation improvements Register shared memory e Control objects QPs CQs Installation YUM update support VMA OFED VMA integration to a single branch Storage iSER at Beta level and SRP Operating Systems Errata Kernel upgrade support API VERSION query API library and headers Counters 64bit wide counters port xmit recv data packets unicast mcast a SR IOV Ethernet Time Stamping and Flow St
55. site articles 66747 For KVM users http support citrix com article CTX 136517 Run http www novell com support kb echo 1 gt sys module kvm parame doc php id 7012337 ters allow unsafe assigned inter https bugzilla redhat com show rupts bug cgi id 1044595 To make this change persist across reboots add the following to the etc modprobe d kvm conf file or create this file if it does not exist options kvm allow_unsafe_as signed_interrupts 1 kernel parame ters 12 System might crash in skb_checksum_help Use UD mode in IPoIB while performing TCP retransmit involving packets with 64k packet size A similar out to the below will be printed kernel BUG at net core dev c 1707 invalid opcode 0000 1 SMP RIP 0010 cffffffff814489885 skb checksum_help 0x148 0x160 Call Trace lt IRQ gt cffffffff814484835 dev hard start x mit 0x3e3 0x530 cffffffff8144c8055 dev queue x mit 0x205 0x550 fffff8145247d neigh connect ed_output 0xbd 0x1 13 When InfiniBand ports are removed from the host To avoid it and have persistent IPoIB network e g when changing port type from IB to Eth or devices names for ConnectX ports add to the removing a card from the PCI bus the remaining etc udev rules d 70 persistent IPoIB interface might be renamed net rules file SUBSYSTEM net ACTION add DRIVERS ATTR address Port GID NAME ibN Where N is the IPoIB required
56. splayed GID table of port 1 is full Can t add lt address gt message Registering a large amount of Memory Regions MR may fail because of DMA mapping issues on RHEL 7 0 Occasionally a user process might experience some memory shortage and not function properly due to Linux kernel occupation of the system s free mem ory for its internal cache To free memory to allow it to be allocated in a user process run the drop_caches procedure below Performing the following steps will cause the kernel to flush and free pages dentries and inodes caches from memory causing that memory to become free Note As this is a non destructive operation and dirty objects are not freeable run sync first To free the pagecache echo 1 proc sys vm drop caches To free dentries and inodes echo 2 proc sys vm drop caches To free pagecache dentries and inodes echo 3 proc sys vm drop caches 3 31 RoCE Known Issues Table 41 RoCE Known Issues Index Description Workaround l Not configuring the Ethernet devices or independent VMs with a unique IP address in the physical port may result in RoCE GID table corruption Restart the driver If RDMA CM is not used for connection manage ment then the source and destination GIDs used to modify a QP or create AH should be of the same type IPv4 or IPv6 Mellanox Technologies 31 J Rev 3 0
57. sues a 33 3 37 iSER Initiator Known Issues 0600 ec eee nes 34 3 38 iSER Target Known Issues 00 00 cece cette nee nes 34 3 39 ZFS Appliance Known Issues 0 0000 ccc eee een ees 34 Chapter 4 Bug Fixes HIStOry ng Ghe SUNDA ey PERA ON ER eke RS Od 35 Chapter 5 Change Log History os cs ee NAAT Oe Ren REX RE Km Wade 39 Chapter 6 API Change Log History 46 2 Mellanox Technologies J Rev 3 0 1 0 1 List Of Tables Table 1 Release Update History 2 2 mas 5 Table 2 MLNX OFED Rev 3 0 1 0 1 Main Features 00 0 0 cece e 6 Table 3 Mellanox OFED for Linux Software Components 0 0 cece eese 7 Table 4 Supported Platforms and Operating Systems 00 cece cee eens 8 Table 5 Additional Software Packages 6 ccc eh 10 Table 6 Supported HCAs Firmware Versions 00 0 cece cece nent e enna 11 Table 7 MLNX OFED Rev 3 0 1 0 1 Compatibility Matrix llle eee 11 Table 8 JRoCE Modes Matrix oos eam ANA BAD BANG LP utd aes wi olde eae 11 Table 9 Changesdny3 051 000 4 bes eh LEER PLReReRUCCRU Tene Perte es 13 Table 10 API Changes in MLNX OFED Rev3 0 0 0 0 0 2 cece ee 13 Table 11 IPoIB Known Issues pesee ena eai ccc ee re 14 Table 12 Ethernet Known Issues 0 0 0c cc eh 17 Table 13 General Known Issues sse an 18 Table 14 eIPoIB Known Issues 2 e m ra 19 Tabled5 XRG KnoWwtr ssuesz ceni en
58. ut flush ing multipath might cause the block layer to panic 7 Rarely in InfiniBand devices when a catastrophic error scenario occurs iSCSI iSER initiator might not fully recover and result in system hang 8 Ubuntul 4 04 Stress login logout might cause block layer to invoke a WARN trace 3 38 iSER Target Known Issues Table 48 iSER Target Known Issues Index Description Workaround l Currently only the following OSs are supported RHEL ContOS 7 0 SLES12 Ubuntu1 4 04 2 Stress login logout from multiple initiators may cause ISER target to panic 3 RHEL CentOS 7 0 Discovery over RDMA is not supported 4 ib_isert is unavailable on custom kernels after run 1 Add isert y to the mlnx add ker ning the minx add kernel support sh script nel support sh script after cat lt lt EOF gt ofed conf 2 Use the updated script to build MLNX_OFED for the custom kernel 3 39 ZFS Appliance Known Issues Table 49 ZFS Appliance Known Issues Index Description Workaround l Connection establishment occurs twice which may cause ISER to log a stack trace 34 Mellanox Technologies Rev 3 0 1 0 1 4 Bug Fixes History Table 50 lists the bugs fixed in this release Table 50 Fixed Bugs List Discovered Fixed in Ius Diseription in Release Release l Security CVE 2014 8159 Fix Prevented integer overflow in 2 0 2 0 5
59. ux Software Components Components Description OpenFabrics utilities e OpenSM IB Subnet Manager with Mellanox proprietary Adaptive Routing Diagnostic tools Performance tests SSA SLESI2 libopensmssa plugin for OpenSM ibssa ibacm MPI e OSU MPI mvapich2 2 0 stack supporting the InfiniBand interface Open MPI stack 1 6 5 and later supporting the InfiniBand interface e MPI benchmark tests OSU benchmarks Intel MPI benchmarks Presta PGAS HPC X OpenSHMEM v2 2 supporting InfiniBand MXM and FCA HPC X UPC v2 2 supporting InfiniBand MXM and FCA HPC Acceleration packages e Mellanox MXM v3 0 p2p transport library acceleration over Infini band Mellanox FCA v2 5 MPI PGAS collective operations acceleration library over InfiniBand e KNEM Linux kernel module enabling high performance intra node MPI PGAS communication for large messages Extra packages e ibutils2 e ibdump MFT Sources of all software modules under conditions mentioned in the modules LICENSE files except for MFT OpenSM plugins ibutils2 and ibdump HCAs ConnectX 3 EN driver version 3 0 0 3 7 ConnectX 4 EN driver version 3 0 0 3 7 Documentation 1 4 Supported Platforms and Operating Systems The following are the supported OSs in MLNX_OFED Rev 3 0 1 0 1 Table 4 Supported Platforms and Operating Systems Operating System Platform RHEL CentOS 6 4 x86 64 PP
60. ver Known Issues 00 ccc ete ene enna 29 Table 37 Ethernet Performance Counters Known Issues 29 Table 38 Uplinks Known Issues n ene n eee 30 Table 39 Tools Known Issues 000 ccc nee e me 30 Table 40 Resources Limitation Known Issues 00 00 cece cee eh 31 Table 41 RoCE Known Issues 00 eect re 31 Table 42 Storage Known ISSUES ia o ir S ra 33 Table43 SRP Known Issttess co KUDA NGANGA KA Sane OE OLEO On ea Sarin 33 Table 44 SRP Interop Known Issues 0 e ene n eee 33 Table 45 DDN Storage Fusion 10000 Target Known Issues 0000s eee eee eee 33 Table 46 Oracle Sun ZFS Storage 7420 Known Issues 0 0 eens 33 Table 47 iSER Initiator Known Issues 00 00 cc ce een eens 34 Table 48 iSER Target Known Issues llle a 34 Table 49 ZFS Appliance Known Issues 1 0 0 0 000 eee n 34 Table 50 Fixed Bugs List ADAN NAAN ROV ANT Y D ELSE S dos ter 8 35 Table 5T Change Log Historyssissiu iruei aie a wien NABANG CER SR SS 39 Table 52 API Change Log History 2 naan ee aneneen 46 4 Mellanox Technologies J Rev 3 0 1 0 1 Release Update History Table 1 Release Update History Release Date Description Rev 3 0 1 0 1 June 09 2015 Added LLR max retransmission rate change to section Changes in Rev 3 0 1 0 1 From Rev 2 4 1 0 0 on page 13 June 04 2015 Initial Release Mellanox Technologies 5 J Rev 3 0 1 0 1 Overview 1 Overv

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