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Message-ID: <5a32c6af-ae18-12dd-7916-cf0ae8d71edf@quicinc.com>
Date:   Fri, 21 Oct 2022 17:41:01 +0530
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Subject: Re: [RFC 0/4] wifi: cfg80211/mac80211: capability advertisement infra
 for multi-hw abstraction under one wiphy
To:     Johannes Berg <johannes@sipsolutions.net>
CC:     <linux-wireless@vger.kernel.org>
References: <20220920100518.19705-1-quic_vthiagar@quicinc.com>
 <878a0455b6af009b6e751152c714e5f310dba729.camel@sipsolutions.net>
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From:   Vasanthakumar Thiagarajan <quic_vthiagar@quicinc.com>
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On 10/21/2022 5:27 PM, Johannes Berg wrote:
> Hi,
> 
> Sorry for the delay!

no worries.

> 
>> - Should we make the capability advertisement changes to mac80211_hwsim?
> 
> I don't think we can, unless we teach hwsim and even mac80211 about
> this? IMHO doesn't make much sense.
> 

Sure.

>> - Should we enable some of concurrent operations like allow scan on each physical
>>    hardware concurrently?
> 
> Isn't that up to the driver? If userspace requests scanning all bands in
> a single scan request you can parallelize it using multiple HW
> resources?

Correct, driver should be able to handle the scanning on multiple HW in 
parallel. We saw resource busy error code when tried to bring up 
multiple AP interfaces on different band at the same time due to
an existing scan request still in progress. I agree, it makes sense
to give a single scan request with all the bands and let the ACS in
user space share the results for AP bring up on any band.

Vasanth