Using 5.4.0-1020-bluefield, this Issue as been fixed: # ifconfig oob_net0 oob_net0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet xxx.xxx.xxx.xxx netmask 255.255.255.0 broadcast 192.168.200.255 inet6 ---- prefixlen 64 scopeid 0x20<link> ether XX:XX:XX:XX:XX:XX txqueuelen 1000 (Ethernet) RX packets 136 bytes 11177 (11.1 KB) RX errors 0 dropped 3 overruns 0 frame 0 TX packets 64 bytes 6526 (6.5 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
root@localhost:~# ifconfig oob_net0 down root@localhost:~# ifconfig oob_net0 up # ifconfig oob_net0 oob_net0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet xxx.xxx.xxx.xxx netmask 255.255.255.0 broadcast 192.168.200.255 inet6 ---- prefixlen 64 scopeid 0x20<link> ether XX:XX:XX:XX:XX:XX txqueuelen 1000 (Ethernet) RX packets 145 bytes 12281 (12.2 KB) RX errors 0 dropped 3 overruns 0 frame 0 TX packets 75 bytes 8438 (8.4 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 ** Tags removed: verification-needed-focal ** Tags added: verification-done-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/1942932 Title: oob_net0 up but stops processing Rx packets Status in linux-bluefield package in Ubuntu: New Status in linux-bluefield source package in Focal: Fix Committed Bug description: SRU Justification: [Impact] * The oob_net0 interface, managed by the mlxbf_gige driver, will be up and enabled but can stop processing received packets if three specific conditions occur: 1) driver has received more than (N * RxRingSize) packets but less than (N+1 * RxRingSize) packets where N is an odd number. Note: the command "ethtool -g oob_net0" will display the current receive ring size, which currently defaults to 128. 2) the driver's interface was disabled via "ifconfig oob_net0 down" during the window described in #1. 3) the driver's interface is re-enabled via "ifconfig oob_net0 up" Without this fix, the driver needs to be unloaded and re-loaded to correct this condition. [Fix] * The fix is to ensure that the driver's "valid_polarity" field is cleared during the open() method so that it always matches the receive polarity used by hardware. [Test Case] * To test this fix, need to send in a specific number of packets to the "oob_net0" interface, then issue "ifconfig oob_net0 down" to disable the interface. A subsequent "ifconfig oob_net0 up" command will succesfully bring up the "oob_net0" interface and start the processing of received packets. [Regression Potential] * There is low risk of this fix causing any problems. [Other] * The mlxbf_gige driver will display v1.25 in modinfo after these changes. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-bluefield/+bug/1942932/+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
