Re: [PATCH] nl80211: Indicate SA Query procedures offload for AP SME device

[vjakkam@codeaurora.org]

On 2021-10-21 21:02, Johannes Berg wrote:
> On Thu, 2021-10-14 at 16:48 +0530, Veerendranath Jakkam wrote:
>> Add AP SME device feature flag to advertise that the SA Query 
>> procedures
>> are handled in driver.
>> 
>> If this flag is advertised SA Query request or response frames from 
>> peers
>> are not reported to userspace. Thus userspace components shall skip SA
>> Query specific validations.
>> 
>> Ex: When AP started with Operating Channel Validation(OCV) support and
>> channel switch occurs, hostapd starts SA Query timer for OCV enabled
>> STAs. Hostapd sends deauth to the STAs which didn't send SA Query
>> request before timeout, Hostapd can skip such validations when this 
>> flag
>> advertised.
> 
> So how's that going to work with older hostapd? It'll be offloaded, and
> then hostapd doesn't know, so it's still going to disconnect them?
> 
> So should be that hostapd also opts in to this driver behaviour?

yes, we have to update hostapd also with new implementation based on the
feature flag.

> 
> Also ... it _really_ would be good if there were upstream drivers with
> these things ...

I fully agree. But unfortunately none of the upstream drivers 
implemented
OCV features within them.