On 10/4/19 5:15 AM, Johannes Berg wrote:
On Thu, 2019-10-03 at 08:13 +0000, Aaron Komisar wrote:
The real reason of scan failure is because mac80211 checks if it's DFS
channel, but it doesn't check if CAC is done or not.
The problem is that scan request is blocked in ETSI reg domains. In non-ETSI
reg domains the behavior is fine.
cfg80211 blocks scan in non-ETSI reg domains and allows leaving the channel
in ETSI reg domains. I think that if we add a function in mac80211, which
checks if we can leave the operating channel this function should also take
into account the reg domain for completeness.
So to solve the issue, the right approach should be "check if DFS
channels and check if CAC is done".
We can't scan while CAC is in progress but why must we verify that CAC was done
in order to perform a scan operation?
I agree that'd be weird - if CAC wasn't done we shouldn't be operating
on that channel to start with?
Sorry to make you guys confused. I was thinking about something else.
So ignore my comment in previous email.
Thanks,
Peter
