** Changed in: linux-azure (Ubuntu Focal)
Status: In Progress => Fix Committed
** Changed in: linux-azure (Ubuntu Groovy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1928788
Title:
linux-azure: Add Mana network driver
Status in linux package in Ubuntu:
Fix Released
Status in linux-azure package in Ubuntu:
Fix Released
Status in linux source package in Focal:
Invalid
Status in linux-azure source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Invalid
Status in linux-azure source package in Groovy:
Fix Committed
Bug description:
SRU Justification
[Impact]
Microsoft has requested the addition of the "mana" driver from Linux v5.11
https://canonical.my.salesforce.com/5004K000005pZQCQA2
[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.
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