From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-pg1-x541.google.com ([2607:f8b0:4864:20::541]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kVVbL-0008Vh-Og for ath11k@lists.infradead.org; Thu, 22 Oct 2020 08:05:36 +0000 Received: by mail-pg1-x541.google.com with SMTP id j7so480084pgk.5 for ; Thu, 22 Oct 2020 01:05:35 -0700 (PDT) Subject: Re: [PATCHv2 1/2] nl80211: vendor-cmd: qca: add command for ap power save From: Arend Van Spriel References: <1598257589-19091-1-git-send-email-vnaralas@codeaurora.org> <4b4a0d79a243c1c3b8044730da0493c96ba294bf.camel@sipsolutions.net> <871rilf2th.fsf@codeaurora.org> <87eelr1oq9.fsf@codeaurora.org> Message-ID: Date: Thu, 22 Oct 2020 10:05:30 +0200 MIME-Version: 1.0 In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============0511114560093193484==" Sender: "ath11k" Errors-To: ath11k-bounces+kvalo=adurom.com@lists.infradead.org To: Kalle Valo , vnaralas@codeaurora.org Cc: Johannes Berg , linux-wireless@vger.kernel.org, ath11k@lists.infradead.org --===============0511114560093193484== Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000ab47c305b23dedf4" --000000000000ab47c305b23dedf4 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit On 10/22/2020 10:00 AM, Arend Van Spriel wrote: > On 10/21/2020 7:19 PM, Kalle Valo wrote: >> vnaralas@codeaurora.org writes: >> >>> On 2020-09-29 13:10, Kalle Valo wrote: >>>> Johannes Berg writes: >>>> >>>>> On Mon, 2020-08-24 at 13:56 +0530, Venkateswara Naralasetty wrote: >>>>>> AP power save feature is to save power in AP mode, where AP goes >>>>>> to power save mode when no stations associate to it and comes out >>>>>> of power save when any station associate to AP. >>>>> >>>>> Why do you think this requires a vendor command? I mean, that seems >>>>> like >>>>> fairly reasonable - even by default - behaviour? >>>> >>>> I have not studied the details, but doesn't AP power save break normal >>>> functionality? For example, I would guess probe requests from clients >>>> would be lost. So there's a major drawback when enabling this, right? >>> >>> This AP power save feature will not break any functionality, Since one >>> chain is always active and all other chains will be disabled when this >>> feature is enabled. AP can still be able to beacon and receive probe >>> request from the clients. The only drawback is reduced network range >>> when this feature is enabled. Hence, we don't want to enable it by >>> default. >> >> Yeah, we really would not want to enable that by default. But what >> should be the path forward, a vendor command or a proper nl80211 >> command? Any opinions? > > I would go for a proper nl80211 command or just add an attribute for use > in NL80211_CMD_START_AP or deal with NL80211_CMD_SET_POWERSAVE when > operating in AP mode. At first I though this functionality was same as SMPS which is in the 802.11 spec, but reading up on it that seems to be a STA feature. 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