This bug is awaiting verification that the linux-bluefield/5.4.0-1037.40 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-bluefield in Ubuntu. https://bugs.launchpad.net/bugs/1974246 Title: mlxbf_gige: increase MDIO polling rate Status in linux-bluefield package in Ubuntu: Invalid Status in linux-bluefield source package in Focal: Fix Committed Bug description: SRU Justification: [Impact] There is MDIO logic within the mlxbf_gige driver that currently polls for completed transactions every 100us. This has been reviewed and tested in the lab and found to be inefficient. [Fix] The fix is to modify the driver logic to increase the MDIO polling rate to 5us. With this change the amount of time spent waiting for the MDIO BUSY signal to de-assert drops from ~100us to ~27us for each operation. [Test Case] The driver should function as before, specifically: * driver probes successfully * oob_net0 link comes up, as seen with "ifconfig -a" * reset and power cycle testing toggle PHY hardware, and oob_net0 link still comes up [Regression Potential] This change affects all MDIO transactions to the board-level PHY device, and as such, could cause a regression with PHY communications. However, this change has been heavily tested. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-bluefield/+bug/1974246/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
