Known Issues

127 VF per PF (254 functions)

127

• 127 VF per PF (254 functions)

• 512 PF+VF+SF per PF (1024 functions)

• 127 VF (127 functions)

• 512 PF+VF+SF per PF (512 functions)

4270913

Description: When using DC InfiniBand transport, SRQ usage requires distributing QPs across four SRQs. This means assigning each QP to its own SRQ when there are up to four QPs.

Workaround: If there are more than four QPs, they must be distributed equally among the four available SRQs.

Keywords: DC InfiniBand transport, SRQ, QPs

Detected in version:

40.45.1200

4412310

Description: Split operation (port splitting) on the second port is not supported on the ConnectX-8 SuperNIC model 900-9X81Q-00CN-ST0.

Workaround: N/A

Keywords: Port splitting

Detected in version:

40.45.1020

4394475

Description: The existing congestion control configuration applies globally, rather than on a per-priority basis.

Workaround: Ensure that the configuration values for all priorities are aligned in either mlxconfig ROCE_CC_PRIO_MASK_P$port or sysfs ecn/roce_rp/enable/$port.

Keywords: Congestion control, ROCE_CC_PRIO

Detected in version:

40.45.1020

4366117

Description: Configuring a small MTU leads to fragmentation of packets critical for the PXE boot process. As a result, the PXE boot filters mistakenly discard these packets, causing the PXE boot to fail. 

Workaround: If this capability is not disabled by default on your adapter cards (pxe_boot_filter_en=1/TRUE in the bios HII), take the following actions: 

1. Reduce the TFTP block size to a value that prevents packet fragmentation.

2. Manually disable the PXE filter.

Keywords: PXE boot filters

Detected in version:

40.45.1020

4240828

Description: Simultaneous access to the same PDDR module info page is not supported.

Workaround: N/A

Keywords: PDDR module

Detected in version:

40.45.1020

4318063

Description: When running the PTP4L application, the path delay displays inconsistent values after each fwreset and rerun, resulting in a non-constant PPS offset that fails to meet Class B/C requirements.

Workaround: Manually perform a port link reset after fwreset.

Keywords: PTP

Detected in version:

40.45.1020

4163634

Description: When connecting a Quantum-3 switch system (with a port split into 8 ports) to a ConnectX-8 single port SuperNIC, the link will not be established.

Workaround: Configure the Quantum-3 switch system port to be split into 2 or 4 ports, or set the ConnectX-8 to operate in multiplane mode.

Keywords: Port split, Quantum-3

Detected in version:

40.44.0212

4230775

Description: Due to a known issue, telemetry rate must be set to lower than 3 minutes.

Workaround: N/A

Keywords: Telemetry rate

Detected in version:

40.44.0212

4038325 / 
4031430 / 
4038341 / 
4046105

Description: Connecting to systems with NRZ speeds of 1,10, 25, 40, 50, or 100Gb/s is not supported in the current release.

Workaround: N/A

Keywords: NRZ, Connectivity

Detected in version:

40.44.0208

4208960

Description: A packet may be parsed incorrectly, if a driver uses the header_length_field_mask when creating a PARSE_GRAPH_NODE object, and the mask value is not composed of continuous bits or does not commence at the least significant bit.

Workaround: Insert the header_length_field_mask with continuous bits and commence at the least significant bit.

Keywords: PARSE GRAPH NODE, Flex Parser

Detected in version:

40.44.0208

4201405

Description: Upgrading to firmware 40.44.0xxx from any previous Engineering Sample version requires power cycling the driver and not just resetting it (using mlxfwreset).  

Workaround: N/A

Keywords: Upgrade, power cycle, reset

Detected in version:

40.44.0208