APPLIED: [PATCH 0/12][FG/linux-azure] Add MANA network driver

[Tim Gardner]

Applied to f/g azure/master-next. Thanks.

-rtg

On 5/18/21 5:57 AM, Tim Gardner wrote:
> BugLink: https://bugs.launchpad.net/bugs/1928788
> https://canonical.my.salesforce.com/5004K000005pZQCQA2
> 
> [Impact]
> 
> 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 at 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 at decui-u2004-vf:~# modinfo mana | grep filename
> filename: /lib/modules/5.4.0-1048-azure/kernel/drivers/net/ethernet/microsoft/mana/mana.ko
> 
> root at 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 at 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 bugs that cause a kernel crash.
> 
> [Other Info]
> 

-- 
-----------
Tim Gardner
Canonical, Inc