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From:   Arend Van Spriel <arend.vanspriel@broadcom.com>
To:     Veerendranath Jakkam <quic_vjakkam@quicinc.com>,
        <johannes@sipsolutions.net>
CC:     <linux-wireless@vger.kernel.org>, <quic_usdutt@quicinc.com>
Date:   Sat, 26 Feb 2022 20:36:36 +0100
Message-ID: <17f3788f1a0.279b.9b12b7fc0a3841636cfb5e919b41b954@broadcom.com>
In-Reply-To: <b0b9d6c8-9b0e-6aec-8fd1-d6a4d3e26202@quicinc.com>
References: <1645613200-30221-1-git-send-email-quic_vjakkam@quicinc.com>
 <1645613200-30221-2-git-send-email-quic_vjakkam@quicinc.com>
 <269dcdce-ca21-211f-9f87-bc1dfc7d29b2@broadcom.com>
 <b0b9d6c8-9b0e-6aec-8fd1-d6a4d3e26202@quicinc.com>
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Subject: Re: [PATCH v2 1/3] cfg80211: Add NL80211_IFTYPE_MLO_LINK type for MLO links on MLD STA
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On February 24, 2022 8:59:07 AM Veerendranath Jakkam 
<quic_vjakkam@quicinc.com> wrote:

> On 2/23/2022 6:09 PM, Arend van Spriel wrote:
>> On 2/23/2022 11:46 AM, Veerendranath Jakkam wrote:
>>> In contrast, NL80211_IFTYPE_MLO_LINK can't be used to represent AP MLO
>>> link since an MLD AP must support pre-11be and 11be clients
>>> simultaneously so each AP MLO link affiliated with AP MLD must also act
>>> as independent AP for pre-11be clients so each AP MLO link must be
>>
>> Not just for pre-11be clients. 11be clients can opt-out right?
>
> I think as of now spec is mandating to use multi-link capabilities in
> 11BE association. Anyways, current design is allows single link 11be
> connections also in case if it is going to be allowed by spec in future.

Reading clause 35.3.5 Multi-link (re)setup (D1.4) I would say it is 
allowed. If the non-AP MLD doesn't include Basic multi-link element in the 
(re)assoc request it is a single link request. In this case the non-AP MLD 
is effectively a 11be STA. Maybe missing a clause describing the AP MLD 
behavior in this scenario.

Regards,
Arend


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