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Subject: Re: [PATCH] wifi: ath11k: fix BUFFER_DONE read on monitor ring rx
  buffer
From:   Kalle Valo <kvalo@kernel.org>
In-Reply-To: <20230309164434.32660-1-quic_hprem@quicinc.com>
References: <20230309164434.32660-1-quic_hprem@quicinc.com>
To:     Harshitha Prem <quic_hprem@quicinc.com>
Cc:     ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
        Harshitha Prem <quic_hprem@quicinc.com>,
        Sathishkumar Muruganandam <quic_murugana@quicinc.com>
User-Agent: pwcli/0.1.1-git (https://github.com/kvalo/pwcli/) Python/3.7.3
Message-ID: <167947844748.8844.13661658322623444104.kvalo@kernel.org>
Date:   Wed, 22 Mar 2023 09:47:31 +0000 (UTC)
Precedence: bulk

Harshitha Prem <quic_hprem@quicinc.com> wrote:

> Perform dma_sync_single_for_cpu() on monitor ring rx buffer before
> reading BUFFER_DONE tag and do dma_unmap_single() only after device
> had set BUFFER_DONE tag to the buffer.
> 
> Also when BUFFER_DONE tag is not set, allow the buffer to get read
> next time without freeing skb.
> 
> This helps to fix AP+Monitor VAP with flood traffic scenario to see
> monitor ring rx buffer overrun missing BUFFER_DONE tag to be set.
> 
> Also remove redundant rx dma buf free performed on DP
> rx_mon_status_refill_ring.
> 
> Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Sathishkumar Muruganandam <quic_murugana@quicinc.com>
> Signed-off-by: Harshitha Prem <quic_hprem@quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

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

68e93ac5a31d wifi: ath11k: fix BUFFER_DONE read on monitor ring rx  buffer

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20230309164434.32660-1-quic_hprem@quicinc.com/

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