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Subject: Re: [PATCHv2 2/2] ath11k: add spectral/CFR buffer validation support
From:   Kalle Valo <kvalo@kernel.org>
In-Reply-To: <1637312901-10279-2-git-send-email-quic_vnaralas@quicinc.com>
References: <1637312901-10279-2-git-send-email-quic_vnaralas@quicinc.com>
To:     Venkateswara Naralasetty <quic_vnaralas@quicinc.com>
Cc:     <ath11k@lists.infradead.org>, <linux-wireless@vger.kernel.org>,
        Venkateswara Naralasetty <quic_vnaralas@quicinc.com>
User-Agent: pwcli/0.1.0-git (https://github.com/kvalo/pwcli/) Python/3.7.3
Message-ID: <163903766687.12588.9252504203114598638.kvalo@kernel.org>
Date:   Thu,  9 Dec 2021 08:14:28 +0000 (UTC)
Precedence: bulk

Venkateswara Naralasetty <quic_vnaralas@quicinc.com> wrote:

> Currently there is no validation on the spectral/CFR report
> over the db ring buffers from the hardware. Improper/incomplete
> DMA by the target can result in invalid data received by host.
> Due to this we may populate incorrect data to user space.
> 
> This buffer validation support fix this issues by filling some
> magic value in the buffer during buffer replenish and check for
> the magic value in the buffer received by the target. If host
> detect magic value in the received buffer it will drop the buffer.
> 
> Tested-on: IPQ8074 WLAN.HK.2.4.0.1-01467-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Venkateswara Naralasetty <quic_vnaralas@quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

Patch applied to ath-next branch of ath.git, thanks.

d3d358efc553 ath11k: add spectral/CFR buffer validation support

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/1637312901-10279-2-git-send-email-quic_vnaralas@quicinc.com/

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