Re: [PATCH v1] mac80211_hwsim: add concurrent channels scanning support over virtio

[Johannes Berg]

On Thu, 2021-05-06 at 14:11 -0700, Weilun Du wrote:
> On Thu, May 6, 2021 at 11:19 AM Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote:
> > 
> > On Thu, 2021-05-06 at 11:05 -0700, Weilun Du wrote:
> > > This fixed the crash when setting channels to 2 or more when
> > > communicating over virtio.
> > 
> > Interesting, I thought I was probably the only user of virtio? :)
> > 
> > johannes
> > 
> Hi Johannes,
> Actually, Android Emulator uses mac80211_hwsim for wifi simulation
> over virtio and it's working. This patch fixed the crash when we set
> channels=2 to speed up scanning. I am trying to see if it makes sense
> to upstream this patch since it's not Android-specific. Thanks!
> 
Oh sure, I'll take a look and will probably apply it for the next cycle,
haven't done an in-depth review. I was just surprised somebody actually
*used* the virtio thing :-)

Does that mean virt_wifi isn't used anymore by the Android emulator?
Maybe then we should remove that again, it had some obscure bugs that
syzkaller found? Not that I mind it being around much, but ...

johannes