From 7a2405efc672011d39da16cfcb8402a283f8f53e Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 24 May 2021 14:56:02 +0200
Subject: [PATCH] mac80211: rework default config script

Emit the new band option instead of hwmode
Support 6 GHz band and HE options

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit 8504212f65865449dd6b9ed9daa0ba9781f8f287)
---
 .../mac80211/files/lib/wifi/mac80211.sh       | 105 ++++++++++++++----
 1 file changed, 85 insertions(+), 20 deletions(-)

diff --git a/package/kernel/mac80211/files/lib/wifi/mac80211.sh b/package/kernel/mac80211/files/lib/wifi/mac80211.sh
index 3e99f066934..0763da8fd81 100644
--- a/package/kernel/mac80211/files/lib/wifi/mac80211.sh
+++ b/package/kernel/mac80211/files/lib/wifi/mac80211.sh
@@ -57,6 +57,85 @@ check_mac80211_device() {
 	[ "$phy" = "$dev" ] && found=1
 }
 
+
+__get_band_defaults() {
+	local phy="$1"
+
+	( iw phy "$phy" info; echo ) | awk '
+BEGIN {
+        bands = ""
+}
+
+($1 == "Band" || $1 == "") && band {
+        if (channel) {
+		mode="NOHT"
+		if (ht) mode="HT20"
+		if (vht) mode="VHT80"
+		if (he) mode="HE80"
+		if (he && band == "1:") mode="HE20"
+                sub("\\[", "", channel)
+                sub("\\]", "", channel)
+                bands = bands band channel ":" mode " "
+        }
+        band=""
+}
+
+$1 == "Band" {
+        band = $2
+        channel = ""
+	vht = ""
+	ht = ""
+	he = ""
+}
+
+$0 ~ "Capabilities:" {
+	ht=1
+}
+
+$0 ~ "VHT Capabilities:" {
+	vht=1
+}
+
+$0 ~ "HE Iftypes" {
+	he=1
+}
+
+$1 == "*" && $3 == "MHz" && $0 !~ /disabled/ && band && !channel {
+        channel = $4
+}
+
+END {
+        print bands
+}'
+}
+
+get_band_defaults() {
+	local phy="$1"
+
+	for c in $(__get_band_defaults "$phy"); do
+		local band="${c%%:*}"
+		c="${c#*:}"
+		local chan="${c%%:*}"
+		c="${c#*:}"
+		local mode="${c%%:*}"
+
+		case "$band" in
+			1) band=2g;;
+			2) band=5g;;
+			3) band=60g;;
+			4) band=6g;;
+			*) band="";;
+		esac
+
+		[ -n "$band" ] || continue
+		[ -n "$mode_band" -a "$band" = "6g" ] && return
+
+		mode_band="$band"
+		channel="$chan"
+		htmode="$mode"
+	done
+}
+
 detect_mac80211() {
 	devidx=0
 	config_load wireless
@@ -75,26 +154,12 @@ detect_mac80211() {
 		config_foreach check_mac80211_device wifi-device
 		[ "$found" -gt 0 ] && continue
 
-		mode_band="g"
-		channel="11"
+		mode_band=""
+		channel=""
 		htmode=""
 		ht_capab=""
 
-		iw phy "$dev" info | grep -q 'Capabilities:' && htmode=HT20
-
-		iw phy "$dev" info | grep -q '\* 5... MHz \[' && {
-			mode_band="a"
-			channel=$(iw phy "$dev" info | grep '\* 5... MHz \[' | grep '(disabled)' -v -m 1 | sed 's/[^[]*\[\|\].*//g')
-			iw phy "$dev" info | grep -q 'VHT Capabilities' && htmode="VHT80"
-		}
-
-		iw phy "$dev" info | grep -q '\* 5.... MHz \[' && {
-			mode_band="ad"
-			channel=$(iw phy "$dev" info | grep '\* 5.... MHz \[' | grep '(disabled)' -v -m 1 | sed 's/[^[]*\[\|\|\].*//g')
-			iw phy "$dev" info | grep -q 'Capabilities:' && htmode="HT20"
-		}
-
-		[ -n "$htmode" ] && ht_capab="set wireless.radio${devidx}.htmode=$htmode"
+		get_band_defaults "$dev"
 
 		path="$(mac80211_phy_to_path "$dev")"
 		if [ -n "$path" ]; then
@@ -106,10 +171,10 @@ detect_mac80211() {
 		uci -q batch <<-EOF
 			set wireless.radio${devidx}=wifi-device
 			set wireless.radio${devidx}.type=mac80211
-			set wireless.radio${devidx}.channel=${channel}
-			set wireless.radio${devidx}.hwmode=11${mode_band}
 			${dev_id}
-			${ht_capab}
+			set wireless.radio${devidx}.channel=${channel}
+			set wireless.radio${devidx}.band=${mode_band}
+			set wireless.radio${devidx}.htmode=$htmode
 			set wireless.radio${devidx}.disabled=1
 
 			set wireless.default_radio${devidx}=wifi-iface
-- 
2.30.2