From: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
To: Thiraviyam Mariyappan <thiraviyam.mariyappan@oss.qualcomm.com>,
ath12k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Subject: Re: [PATCH ath-next] wifi: ath12k: Set congestion control max MSDU count
Date: Tue, 14 Jul 2026 22:24:50 +0530 [thread overview]
Message-ID: <de1e6499-b3a6-49fe-a2ef-cdcf57438ef2@oss.qualcomm.com> (raw)
In-Reply-To: <20260622062614.760166-1-thiraviyam.mariyappan@oss.qualcomm.com>
On 6/22/2026 11:56 AM, Thiraviyam Mariyappan wrote:
> Currently when running 128 clients UDP DL test in 5 GHz HE80 (NSS 2x2),
> firmware uses the default max MSDU count (16K MSDUs). This lower limit
> causes the firmware to compute a smaller TQM drop threshold, aggregate
> packets at a reduced rate, and results in increased packet drops with
> TQM drop threshold as the completion reason.
>
> To fix this issue, set WMI_PDEV_PARAM_SET_CONG_CTRL_MAX_MSDUS to the TX
> descriptor count using ath12k_wmi_pdev_set_param(). This increases the
> TQM drop threshold, reduces drop events, and improves throughput from
> ~722 Mbps to ~1060 Mbps with 1200 Mbps ingress.
>
> Add a new HW capability flag (supports_cong_ctrl_max_msdus) and enable
> the WMI parameter only on supported platforms.
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6-01181-QCAHKSWPL_SILICONZ-1
>
> Signed-off-by: Thiraviyam Mariyappan <thiraviyam.mariyappan@oss.qualcomm.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
next prev parent reply other threads:[~2026-07-14 16:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-22 6:26 [PATCH ath-next] wifi: ath12k: Set congestion control max MSDU count Thiraviyam Mariyappan
2026-07-14 16:54 ` Rameshkumar Sundaram [this message]
2026-07-15 1:54 ` Baochen Qiang
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