hostapd: Add uapsd option to netifd.sh

The uapsd option sets the uapsd_advertisement_enabled flag in hostapd.

The check for phy support is already implemented here in hostapd since 2011:
http://w1.fi/cgit/hostap/commit/?id=70619a5d8a3d32faa43d66bcb1b670cacf0c243e

So this can be safely set to 1 as default.

Signed-off-by: Vittorio Gambaletta <openwrt@vittgam.net>

SVN-Revision: 43846

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

@@ -109,7 +109,7 @@ EOF
 
 hostapd_common_add_bss_config() {
 	config_add_string 'bssid:macaddr' 'ssid:string'
-	config_add_boolean wds wmm hidden
+	config_add_boolean wds wmm uapsd hidden
 
 	config_add_int maxassoc max_inactivity
 	config_add_boolean disassoc_low_ack isolate short_preamble
@@ -173,7 +173,7 @@ hostapd_set_bss_options() {
 		maxassoc max_inactivity disassoc_low_ack isolate auth_cache \
 		wps_pushbutton wps_label ext_registrar wps_pbc_in_m1 \
 		wps_device_type wps_device_name wps_manufacturer wps_pin \
-		macfilter ssid wmm hidden short_preamble rsn_preauth \
+		macfilter ssid wmm uapsd hidden short_preamble rsn_preauth \
 		iapp_interface
 
 	set_default isolate 0
@@ -183,6 +183,7 @@ hostapd_set_bss_options() {
 	set_default disassoc_low_ack 1
 	set_default hidden 0
 	set_default wmm 1
+	set_default uapsd 1
 
 	append bss_conf "ctrl_interface=/var/run/hostapd"
 	if [ "$isolate" -gt 0 ]; then
@@ -199,6 +200,7 @@ hostapd_set_bss_options() {
 	append bss_conf "preamble=$short_preamble" "$N"
 	append bss_conf "wmm_enabled=$wmm" "$N"
 	append bss_conf "ignore_broadcast_ssid=$hidden" "$N"
+	append bss_conf "uapsd_advertisement_enabled=$uapsd" "$N"
 
 	[ "$wpa" -gt 0 ] && {
 		[ -n "$wpa_group_rekey"  ] && append bss_conf "wpa_group_rekey=$wpa_group_rekey" "$N"