Issue

Description of problem: Running "ethtool -m eth0" on a AMD/Pensando DSC does not work as expected. It also does not work on other vendor NICs that I have tried. When running the same command using Ethtool v5.12 or Ethtool v5.8 it works as expected. Version-Release number of selected component (if applicable): Ethtool: v5.13 RHEL8.6 How reproducible: 100% Steps to Reproduce: 1. Run ethtool command to get module eeprom dump ethtool -m eth0 netlink error: Invalid argument Actual results: Ethtool seems to correctly get the module eeprom len (for our case it's 256B), but fails when trying to actually get the module eeprom dump. ethtool -m eth0 netlink error: Invalid argument Expected results: The following results were seen with Ethtool v5.12 from kernel.org on RHEL8.6: ethtool -m eth0 Identifier : 0x11 (QSFP28) Extended identifier : 0x10 Extended identifier description : 1.5W max. Power consumption Extended identifier description : No CDR in TX, No CDR in RX Extended identifier description : High Power Class (> 3.5 W) not enabled Connector : 0x23 (No separable connector) Transceiver codes : 0x80 0x00 0x00 0x00 0x00 0x00 0x00 0x00 Transceiver type : 100G Ethernet: 100G Base-CR4 or 25G Base-CR CA-L Encoding : 0x05 (64B/66B) BR, Nominal : 25500Mbps Rate identifier : 0x00 Length (SMF,km) : 0km Length (OM3 50um) : 0m Length (OM2 50um) : 0m Length (OM1 62.5um) : 0m Length (Copper or Active cable) : 2m Transmitter technology : 0xa0 (Copper cable unequalized) Attenuation at 2.5GHz : 4db Attenuation at 5.0GHz : 6db Attenuation at 7.0GHz : 8db Attenuation at 12.9GHz : 11db Vendor name : FS Vendor OUI : 00:00:00 Vendor PN : Q28-PC02 Vendor rev : 5 Vendor SN : G1912206800 Date code : 191231 Revision Compliance : SFF-8636 Rev 2.5/2.6/2.7 Module temperature : 45.37 degrees C / 113.67 degrees F Module voltage : 3.3140 V Alarm/warning flags implemented : No Laser tx bias current (Channel 1) : 0.000 mA Laser tx bias current (Channel 2) : 0.000 mA Laser tx bias current (Channel 3) : 0.000 mA Laser tx bias current (Channel 4) : 0.000 mA Transmit avg optical power (Channel 1) : 0.0000 mW / -inf dBm Transmit avg optical power (Channel 2) : 0.0000 mW / -inf dBm Transmit avg optical power (Channel 3) : 0.0000 mW / -inf dBm Transmit avg optical power (Channel 4) : 0.0000 mW / -inf dBm Receiver signal OMA(Channel 1) : 0.0000 mW / -inf dBm Receiver signal OMA(Channel 2) : 0.0000 mW / -inf dBm Receiver signal OMA(Channel 3) : 0.0000 mW / -inf dBm Receiver signal OMA(Channel 4) : 0.0000 mW / -inf dBm Additional info: It looks like there was support for netlink based "ethtool -m" added right before Ethtool v5.13 was release. I'm wondering if this is the cause of the issue. 8b8cb55 (tag: v5.13) build: add list.h to file list in Makefile.am 799146b Release version 5.13. 601ea40 netlink: work around spurious selftest failure 4c8f9e3 Merge branch 'review/getmodule-v4' into master 79c8b58 ethtool: Update manpages to reflect changes to getmodule (-m) command b2b1924 ethtool: Rename QSFP-DD identifiers to use CMIS fc47fdb ethtool: Refactor human-readable module EEPROM output for new API 25b64c6 ethtool: Add netlink handler for getmodule (-m)

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Resolution

Unresolved