[OpenWrt-Devel] [PATCH] mac80211: fix txpower when using DFS channels

[Martin Weinelt]

Yep, that does the trick. Thank you!

Tested-by: Martin Weinelt <martin at darmstadt.freifunk.net>

On 12/14/19 11:38 PM, David Bauer wrote:
> With this patch, txpower for the PHY is applied when configuring the PHY
> instead of the VIF. Otherwise, the configured txpower is not applied for
> the first initialized VIF when using DFS channels, as it is currently
> applied to early when the CAC hasn't finished.
> 
> Reported-by: Martin Weinelt <martin at darmstadt.freifunk.net
> Signed-off-by: David Bauer <mail at david-bauer.net>
> ---
>   .../mac80211/files/lib/netifd/wireless/mac80211.sh       | 9 +++++++--
>   1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh b/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
> index 18033e9d56..f1882ec509 100644
> --- a/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
> +++ b/package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh
> @@ -743,7 +743,7 @@ mac80211_setup_vif() {
>   
>   	json_select config
>   	json_get_vars mode
> -	json_get_var vif_txpower txpower
> +	json_get_var vif_txpower
>   	json_get_var vif_enable enable 1
>   
>   	[ "$vif_enable" = 1 ] || action=down
> @@ -753,7 +753,6 @@ mac80211_setup_vif() {
>   		json_select ..
>   		return
>   	}
> -	set_default vif_txpower "$txpower"
>   	[ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
>   
>   	case "$mode" in
> @@ -908,6 +907,12 @@ drv_mac80211_setup() {
>   	iw phy "$phy" set antenna_gain $antenna_gain
>   	iw phy "$phy" set distance "$distance"
>   
> +	if [ -n "$txpower" ]; then
> +		iw phy "$phy" set txpower fixed "${txpower%%.*}00"
> +	else
> +		iw phy "$phy" set txpower auto
> +	fi
> +
>   	[ -n "$frag" ] && iw phy "$phy" set frag "${frag%%.*}"
>   	[ -n "$rts" ] && iw phy "$phy" set rts "${rts%%.*}"
>   
> 

-- 
Und im übrigen bin ich der Meinung, dass Geräte mit weniger als 8MB 
Flash und 64MB RAM zerstört werden müssen.
-- frei nach Marcus Porcious Cato der Ältere

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