netdev - Re: [PATCH 2/2] rtl8xxxu: fill up txrate info for gen1 chips

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Date:   Wed, 16 Mar 2022 17:37:23 +0200
From:   Kalle Valo <kvalo@...nel.org>
To:     Chris Chiu <chris.chiu@...onical.com>
Cc:     Jes.Sorensen@...il.com, davem@...emloft.net, kuba@...nel.org,
        code@...o-schneider.ch, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] rtl8xxxu: fill up txrate info for gen1 chips

Chris Chiu <chris.chiu@...onical.com> writes:

> RTL8188CUS/RTL8192CU(gen1) don't support rate adatptive report hence
> no real txrate info can be retrieved. The vendor driver reports the
> highest rate in HT capabilities from the IEs to avoid empty txrate.
> This commit initiates the txrate information with the highest supported
> rate negotiated with AP. The gen2 chip keeps update the txrate from
> the rate adaptive reports, and gen1 chips at least have non-NULL txrate
> after associated.
>
> Signed-off-by: Chris Chiu <chris.chiu@...onical.com>
> ---
>  .../wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 59 +++++++++++++++++++
>  1 file changed, 59 insertions(+)
>
> diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
> index d225a1257530..285acf303e3d 100644
> --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
> +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
> @@ -4473,6 +4473,35 @@ void rtl8xxxu_gen1_init_aggregation(struct rtl8xxxu_priv *priv)
>  	priv->rx_buf_aggregation = 1;
>  }
>  
> +static struct ieee80211_rate rtl8xxxu_legacy_ratetable[] = {
> +	{.bitrate = 10, .hw_value = 0x00,},
> +	{.bitrate = 20, .hw_value = 0x01,},
> +	{.bitrate = 55, .hw_value = 0x02,},
> +	{.bitrate = 110, .hw_value = 0x03,},
> +	{.bitrate = 60, .hw_value = 0x04,},
> +	{.bitrate = 90, .hw_value = 0x05,},
> +	{.bitrate = 120, .hw_value = 0x06,},
> +	{.bitrate = 180, .hw_value = 0x07,},
> +	{.bitrate = 240, .hw_value = 0x08,},
> +	{.bitrate = 360, .hw_value = 0x09,},
> +	{.bitrate = 480, .hw_value = 0x0a,},
> +	{.bitrate = 540, .hw_value = 0x0b,},
> +};

Should this be static const?

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