Known Issues

Warning

This section includes history of known issues of 3 major releases back. For older releases history, please refer to the relevant firmware versions.

Ethernet Rate Limit per VF in RoCE Mode Limitations

Dual Port Device

Single Port Device

w/o LAG (TOTAL_VFS>32)

With LAG (TOTAL_VFS<32)

w/o LAG

w/o QoS

Full QoS

w/o QoS

Full QoS

w/o QoS

Full QoS

127

45

32

20

127

100

Ethernet Rate Limit per VF in InfiniBand Mode Limitations

Dual Port Device

Single Port Device

w/o LAG

w/o LAG

w/o QoS

Full QoS

w/o QoS

Full QoS

127

26

127

55

Known Issues

Internal Ref.

Issue

2075728

Description: Minor performance degradation in CREATE_QP throughput.

Workaround: N/A

Keywords: Performance

Discovered in Version: 12.27.1016

2071210

Description: mlxconfig query for the BOOT_INTERRUPT_DIS TLV shows a wrong value in the "current value" field.

Workaround: Use "next boot" indication to see the right value.

Keywords: mlxconfig

Discovered in Version: 12.27.1016

2058677

Description: In Socket Direct supported cards, after performing mlxfwreset, the expansion ROM register might be writable on all hosts for less than 1 second.

Workaround: N/A

Keywords: Expansion ROM, Socket Direct

Discovered in Version: 12.27.1016

2057653

Description: quota_exceeded_command and invalid_command counters do not function properly. In this firmware version, the quota_exceeded_command counter’s value always remains 0, whereas the invalid_command counter increases only for some Ethernet commands failure events.

Workaround: N/A

Keywords: quota_exceeded_command, invalid_command, vnic_env counters

Discovered in Version: 12.27.1016

1840289

Description: Since Packet Pacing enforce max_tc value is “1”, features that require multiple TCs will not be active when this mode is available.

Workaround: N/A

Keywords: Packet Pacing

Discovered in Version: 12.26.1040

1796628

Description: Due to performance considerations, unicast loopback traffic will go through the NIC SX tables, and multicast loopback traffic will skip the NIC SX tables.

Workaround: N/A

Keywords: Performance, unicast loopback traffic, multicast loopback traffic

Discovered in Version: 12.26.1040

1754253

Description: Firmware downgrade followed by mlxfwreset/mstfwreset action may cause sideband management connection issues.

Workaround: Reset the BMC

Keywords: mlxfwreset/mstfwreset

Discovered in Version: 12.25.1020

1699214

Description: NODNIC VF is partially tested. It is fully tested only in ConnectX-5 adapter cards.

Workaround: N/A

Keywords: NODNIC VF

Discovered in Version: 12.25.1020

1689186

Description: Changing priority to TC map during traffic might cause packet drops.

Workaround: N/A

Keywords: QoS

Discovered in Version: 12.25.1020

1604699

Description: Ethernet RFC 2819 counter ether_stats_oversize_pkts and Ethernet IEEE 802.3 counter a_frame_too_long_errors share the same resource. Clearing each of them will affect the other.

Workaround: N/A

Keywords: Counters

Discovered in Version: 12.25.1020

-

Description: In Ethernet mode, at 10/40GbE speeds, only NO-FEC in Force mode is supported. Other user configurations are overridden.

Workaround: N/A

Keywords: Ethernet, 10GbE, 40GbE, RS-FEC

Discovered in Version: 12.25.1020

1498399

Description: If the XRC switches between SRQ/RMPs while there is an outstanding ODP on the responder XRC QP, a CQE with an error might be generated (that is not a PFAULT abort).

Workaround: N/A

Keywords: XRC SRQ/RMP ODP

Discovered in Version: 12.25.1020

1546401

Description: vport_tc and para_vport_tc are not supported in this version.

Workaround: N/A

Keywords: SR-IOV vport_tc and para_vport_tc

Discovered in Version: 12.24.1000

1546492

Description: Executing the update_lid command while the IB port sniffer utility is active can stop the utility.

Workaround: N/A

Keywords: IB Sniffer

Discovered in Version: 12.24.1000

1537898

Description: Initializing a function while the IB port sniffer utility is active can stop the utility.

Workaround: N/A

Keywords: IB Sniffer

Discovered in Version: 12.24.1000

1332714/1345824

Description: The maximum “read” size of MTRC_STDB is limited to 272 Bytes.

Workaround: Set the MTRC_STDB.read_size to the maximum value of 0x110=272 Bytes

Keywords: Access register, MTRC_STDB, tracer to dmesg, fwtrace to dmesg

Discovered in Version: 12.23.1020

1408994

Description: FTE with both forward (FWD) and encapsulation (ENCAP) actions is not supported in the SX NIC Flow Table.

Workaround: N/A

Keywords: SX NIC Flow Table

Discovered in Version: 12.23.1020

1350794

Description: Encapsulation / Decapsulation support in steering has the following limitations:

  • Encapsulation / Decapsulation can be open on the FDB only if all VFs are non active.

  • Encapsulation / Decapsulation supports single mode only: FDB / NIC. Opening tables of both types is not supported.

  • Encapsulation / Decapsulation per device support:

    encap-decap.PNG

Workaround: N/A

Keywords: Steering Encapsulation / Decapsulation

Discovered in Version: 12.23.1020

1027553

Description: While using e-switch vport sVLAN stripping, the RX steering values on the sVLAN might not be accurate.

Workaround: N/A

Keywords: e-sw vport sVLAN stripping, RX steering

Discovered in Version: 12.24.1000

1799917

Description: Untagged CVLAN packets in the Steering Flow Tables do not match the SVLAN tagged packets.

Workaround: N/A

Keywords: Steering Flow Tables, CVLAN/SVLAN packets

Discovered in Version: 12.23.1020

1355883

Description: Running the QUERY_VPORT_COUNTER command with clear bit results in discard counters being reset.

Workaround: N/A

Keywords: Discard counters

Discovered in Version: 12.22.1002

1277762

Description: An Ethernet multicast loopback packet is not counted (even if it is not a local loopback packet) when running the nic_receive_steering_discard command.

Workaround: N/A

Keywords: Ethernet multicast loopback packet

Discovered in Version: 12.22.1002

1114610

Description: During DC CNAK stress tests, DC CNAK timeout (CNAK drops) might occur.

Workaround: N/A

Keywords: DC CNAK

Discovered in Version: 12.22.1002

1047184

Description: RDMA resq_local_length_error and resp_remote_invalid_request

counters do not function properly.

Workaround: N/A

Keywords: RDMA counters

Discovered in Version: 12.21.1000

1168594

Description: RoCE Dual Port Mode (a.k.a Multi-Port vHCA: MPV) is not supported in Multi-Host setups.

Workaround: N/A

Keywords: Multi-Port vHCA, Multi-Host

Discovered in Version: 12.21.1000

1072337

Description: If a packet is modified in e-sw flow steering, the SX sniffer Flow Table (of the VF) will see the sniffed packet after the modification.

Workaround: N/A

Keywords: SX sniffer Flow Table

Discovered in Version: 12.21.1000

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