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Date: Thu, 6 Jun 2024 10:58:59 +0200
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Subject: Re: [RFC v2 3/7] wifi: cfg80211: extend interface combination check
 for multi-radio
To: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>,
 linux-wireless@vger.kernel.org
Cc: johannes@sipsolutions.net, quic_adisi@quicinc.com,
 ath12k@lists.infradead.org
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From: Felix Fietkau <nbd@nbd.name>
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On 06.06.24 10:56, Karthikeyan Periyasamy wrote:
> 
> 
> On 6/6/2024 1:25 PM, Felix Fietkau wrote:
>> On 06.06.24 09:20, Karthikeyan Periyasamy wrote:
>>>
>>>
>>> On 6/6/2024 12:01 AM, Felix Fietkau wrote:
>>>>       /*
>>>>        * This is a bit strange, since the iteration used to rely only on
>>>> @@ -2384,8 +2383,10 @@ int cfg80211_iter_combinations(struct wiphy 
>>>> *wiphy,
>>>>        * cfg80211 already - the only thing not would appear to be any 
>>>> new
>>>>        * interfaces (while being brought up) and channel/radar data.
>>>>        */
>>>> -    cfg80211_calculate_bi_data(wiphy, params->new_beacon_int,
>>>> -                   &beacon_int_gcd, &beacon_int_different);
>>>> +    if (!radio)
>>>> +            cfg80211_calculate_bi_data(wiphy, params->new_beacon_int,
>>>> +                           &beacon_int_gcd,
>>>> +                           &beacon_int_different);
>>>
>>> Why its avoid for radio specific iface combination ?
>> 
>> Because it iterates over all wdevs within cfg80211. I didn't think this 
>> was necessary, given that it already excludes MLO wdevs.
>> 
> 
> Dont tie the radio specific iface advertisement with MLO.
> 
> Usually the existing code consider "params->new_beacon_int" the MLO
> scenario also.

For your hardware, do beacon intervals need to be matched/aligned per 
radio or globally?

- Felix