hostapd: add channel utilization as config option

Add the channel utilization as hostapd configuration option.

Signed-off-by: Nick Hainke <vincent@systemli.org>

package/network/services/hostapd/files/hostapd.sh

@@ -229,7 +229,8 @@ hostapd_set_bss_options() {
 		wps_independent wps_device_type wps_device_name wps_manufacturer wps_pin \
 		macfilter ssid wmm uapsd hidden short_preamble rsn_preauth \
 		iapp_interface eapol_version dynamic_vlan ieee80211w nasid \
-		acct_server acct_secret acct_port acct_interval
+		acct_server acct_secret acct_port acct_interval \
+		bss_load_update_period chan_util_avg_period
 
 	set_default isolate 0
 	set_default maxassoc 0
@@ -243,7 +244,9 @@ hostapd_set_bss_options() {
 	set_default tdls_prohibit 0
 	set_default eapol_version 0
 	set_default acct_port 1813
-
+	set_default bss_load_update_period 60
+	set_default chan_util_avg_period 600
+	
 	append bss_conf "ctrl_interface=/var/run/hostapd"
 	if [ "$isolate" -gt 0 ]; then
 		append bss_conf "ap_isolate=$isolate" "$N"
@@ -255,6 +258,8 @@ hostapd_set_bss_options() {
 		append bss_conf "ap_max_inactivity=$max_inactivity" "$N"
 	fi
 
+	append bss_conf "bss_load_update_period=$bss_load_update_period" "$N"
+	append bss_conf "chan_util_avg_period=$chan_util_avg_period" "$N"
 	append bss_conf "disassoc_low_ack=$disassoc_low_ack" "$N"
 	append bss_conf "preamble=$short_preamble" "$N"
 	append bss_conf "wmm_enabled=$wmm" "$N"