mbox series

[0/3,f/j/k,linux-azure] Azure: hv_netvsc: Fix race between VF offering and VF association message from host

Message ID 20221027145850.41806-1-tim.gardner@canonical.com
Headers show
Series Azure: hv_netvsc: Fix race between VF offering and VF association message from host | expand

Message

Tim Gardner Oct. 27, 2022, 2:58 p.m. UTC 
BugLink: https://bugs.launchpad.net/bugs/1994974

SRU Justification

[Impact]

During vm boot, there might be possibility that vf registration call comes
before the vf association from host to vm.

And this might break netvsc vf path, this is in order to prevent the same
block vf registration until vf bind message comes from host.

[Test Plan]

Microsoft tested

[Where things could go wrong]

The 5.4 backport patch could hang waiting for a VF addition to complete.

[Other Info]

SF: #00347129

Comments

Bartlomiej Zolnierkiewicz Nov. 10, 2022, 5:39 p.m. UTC | #1 
Acked-by: Bartlomiej Zolnierkiewicz <bartlomiej.zolnierkiewicz@canonical.com>

On Thu, Oct 27, 2022 at 5:00 PM Tim Gardner <tim.gardner@canonical.com> wrote:
>
> BugLink: https://bugs.launchpad.net/bugs/1994974
>
> SRU Justification
>
> [Impact]
>
> During vm boot, there might be possibility that vf registration call comes
> before the vf association from host to vm.
>
> And this might break netvsc vf path, this is in order to prevent the same
> block vf registration until vf bind message comes from host.
>
> [Test Plan]
>
> Microsoft tested
>
> [Where things could go wrong]
>
> The 5.4 backport patch could hang waiting for a VF addition to complete.
>
> [Other Info]
>
> SF: #00347129
Tim Gardner Nov. 10, 2022, 7:04 p.m. UTC | #2 
On 10/27/22 8:58 AM, Tim Gardner wrote:
> BugLink: https://bugs.launchpad.net/bugs/1994974
> 
> SRU Justification
> 
> [Impact]
> 
> During vm boot, there might be possibility that vf registration call comes
> before the vf association from host to vm.
> 
> And this might break netvsc vf path, this is in order to prevent the same
> block vf registration until vf bind message comes from host.
> 
> [Test Plan]
> 
> Microsoft tested
> 
> [Where things could go wrong]
> 
> The 5.4 backport patch could hang waiting for a VF addition to complete.
> 
> [Other Info]
> 
> SF: #00347129
> 
Applied to f/j/k linux-azure/master-next. Thanks.

-rtg