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Subject: Re: [PATCH v4] wcn36xx: Implement tx_rate reporting
From:   Kalle Valo <kvalo@kernel.org>
In-Reply-To: <20220325224212.159690-1-egagnon@squareup.com>
References: <20220325224212.159690-1-egagnon@squareup.com>
To:     Edmond Gagnon <egagnon@squareup.com>
Cc:     Kalle Valo <kvalo@codeaurora.org>,
        Edmond Gagnon <egagnon@squareup.com>,
        Benjamin Li <benl@squareup.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>, wcn36xx@lists.infradead.org,
        linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
User-Agent: pwcli/0.1.0-git (https://github.com/kvalo/pwcli/) Python/3.7.3
Message-ID: <164862749156.10264.5966997435195917442.kvalo@kernel.org>
Date:   Wed, 30 Mar 2022 08:04:53 +0000 (UTC)
Precedence: bulk

Edmond Gagnon <egagnon@squareup.com> wrote:

> Currently, the driver reports a tx_rate of 6.0 MBit/s no matter the true
> rate:
> 
> root@linaro-developer:~# iw wlan0 link
> Connected to 6c:f3:7f:eb:9b:92 (on wlan0)
>         SSID: SQ-DEVICETEST
>         freq: 5200
>         RX: 4141 bytes (32 packets)
>         TX: 2082 bytes (15 packets)
>         signal: -77 dBm
>         rx bitrate: 135.0 MBit/s MCS 6 40MHz short GI
>         tx bitrate: 6.0 MBit/s
> 
>         bss flags:      short-slot-time
>         dtim period:    1
>         beacon int:     100
> 
> This patch requests HAL_GLOBAL_CLASS_A_STATS_INFO via a hal_get_stats
> firmware message and reports it via ieee80211_ops::sta_statistics.
> 
> root@linaro-developer:~# iw wlan0 link
> Connected to 6c:f3:7f:eb:73:b2 (on wlan0)
>         SSID: SQ-DEVICETEST
>         freq: 5700
>         RX: 26788094 bytes (19859 packets)
>         TX: 1101376 bytes (12119 packets)
>         signal: -75 dBm
>         rx bitrate: 135.0 MBit/s MCS 6 40MHz short GI
>         tx bitrate: 108.0 MBit/s VHT-MCS 5 40MHz VHT-NSS 1
> 
>         bss flags:      short-slot-time
>         dtim period:    1
>         beacon int:     100
> 
> Tested on MSM8939 with WCN3680B running firmware CNSS-PR-2-0-1-2-c1-00083,
> and verified by sniffing frames over the air with Wireshark to ensure the
> MCS indices match.
> 
> Signed-off-by: Edmond Gagnon <egagnon@squareup.com>
> Reviewed-by: Benjamin Li <benl@squareup.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

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

1216c4d30723 wcn36xx: Implement tx_rate reporting

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20220325224212.159690-1-egagnon@squareup.com/

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