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Subject: Re: [PATCH v2] brcmfmac: Configure keep-alive packet on suspend
From:   Kalle Valo <kvalo@codeaurora.org>
In-Reply-To: <1637596046-21651-1-git-send-email-loic.poulain@linaro.org>
References: <1637596046-21651-1-git-send-email-loic.poulain@linaro.org>
To:     Loic Poulain <loic.poulain@linaro.org>
Cc:     aspriel@gmail.com, franky.lin@broadcom.com,
        hante.meuleman@broadcom.com, chi-hsien.lin@infineon.com,
        wright.feng@infineon.com, chung-hsien.hsu@infineon.com,
        linux-wireless@vger.kernel.org,
        brcm80211-dev-list.pdl@broadcom.com,
        Loic Poulain <loic.poulain@linaro.org>
User-Agent: pwcli/0.1.0-git (https://github.com/kvalo/pwcli/) Python/3.7.3
Message-ID: <163818154249.17830.9502816664657102039.kvalo@codeaurora.org>
Date:   Mon, 29 Nov 2021 10:25:48 +0000 (UTC)
Precedence: bulk

Loic Poulain <loic.poulain@linaro.org> wrote:

> When entering suspend as a client station with wowlan enabled,
> the Wi-Fi link is supposed to be maintained. In that state, no
> more data is generated from client side, and the link stays idle
> as long the station is suspended and as long the AP as no data to
> transmit.
> 
> However, most of the APs kick-off such 'inactive' stations after
> few minutes, causing unexpected disconnect (reconnect, etc...).
> 
> The usual way to prevent this is to submit a Null function frame
> periodically as a keep-alive. This is something that can be host
> /software generated (e.g. wpa_supplicant), but that needs to be
> offloaded to the Wi-Fi controller in case of suspended host.
> 
> This change enables firmware generated keep-alive frames when
> entering wowlan suspend, using the 'mkeep_alive' IOVAR.
> 
> Signed-off-by: Loic Poulain <loic.poulain@linaro.org>

Patch applied to wireless-drivers-next.git, thanks.

7a6cfe28ae3e brcmfmac: Configure keep-alive packet on suspend

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/1637596046-21651-1-git-send-email-loic.poulain@linaro.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches