Public bug reported: SRU Justification
[Impact] Microsoft has requested the addition of the "mana" driver from Linux v5.11 [Fix] This patch set consists of 5 patches that are now in mainline. The patches add the VF driver for Microsoft Azure Network Adapter (MANA), and also changes the hv_netvsc driver's netvsc/VF binding logic to check both the MAC address and the serial number (this is required by the MANA VF driver). Microsoft would like to request the following 5 patches in all supported releases: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=64ff412ad41fe3a5bf759ff4844dc1382176485c https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net- next.git/commit/?id=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net- next.git/commit/?id=55cdc26a91ac270887583945aef2bd460a2805f7 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net- next.git/commit/?id=45b102dd81491e30ac7596b5515856141f99319f https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net- next.git/commit/?id=d90a94680bc0a8069d93282bc5f2966d00b9c4a4 [Test Plan] 2021-05-17 15:25 UTC- -We tested the two versions of mana.ko: root@decui-u2004-vf:~# uname -a Linux decui-u2004-vf 5.4.0-1048-azure #50~sf00310147.1-Ubuntu SMP Tue May 11 02:06:24 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux root@decui-u2004-vf:~# modinfo mana | grep filename filename: /lib/modules/5.4.0-1048-azure/kernel/drivers/net/ethernet/microsoft/mana/mana.ko root@decui-u2004-vf:~# uname -a Linux decui-u2004-vf 5.8.0-1032-azure #34~SF00310147.1-Ubuntu SMP Tue May 11 02:01:58 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux root@decui-u2004-vf:~# modinfo mana | grep filename filename: /lib/modules/5.8.0-1032-azure/kernel/drivers/net/ethernet/microsoft/mana/mana.ko Everything worked as expected in our testing: 1. The MANA driver loads and unloads multiple times without any issue. 2. iperf TX/RX tests run without any issue, and the performance numbers are on par with what we get with the latest mainline kernel: the TX number is pretty good; the RX number is sometimes not great but this is a known issue with the latest mainline kernel as well. 3. "ethtool -S" and "ethtool -L" work as expected. 4. When iperf TX/RX tests are running, changing the number of the MANA NIC TX/RX queues and unloading/reloading the MANA driver work without any issue. [Where problems could occur] The driver may have bug(s) that cause a kernel crash. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: bot-stop-nagging ** Summary changed: - Add Mana network driver + linux-azure: Add Mana network driver ** Tags added: bot-stop-nagging -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1928788 Title: linux-azure: Add Mana network driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1928788/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
