hostapd: add support for wifi-station and wifi-vlan sections

This patch adds support for 2 new uci sections.

config wifi-vlan
	# iface is optional. if it is not defined the vlan will apply
	# to all interfaces
        option iface	default_radio0
        option name	guest
        option vid	100
        option network	guest

config wifi-station
	# iface is optional. if it is not defined the station will apply
	# to all interfaces
        option iface	default_radio0
        # mac is optional. if it is not defined it will be a catch all
	# for any sta using this key
	option mac	'00:11:22:33:44:55'
        # vid is optional. if it is not defined, the sta will be part of
	# the primary iface.
	option vid	100
        option key	testtest

With this patch applied it is possible to use multiple PSKs on a single BSS.

Signed-off-by: John Crispin <john@phrozen.org>

package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh

@@ -506,7 +506,7 @@ mac80211_iw_interface_add() {
 mac80211_prepare_vif() {
 	json_select config
 
-	json_get_vars ifname mode ssid wds powersave macaddr enable
+	json_get_vars ifname mode ssid wds powersave macaddr enable wpa_psk_file vlan_file
 
 	[ -n "$ifname" ] || ifname="wlan${phy#phy}${if_idx:+-$if_idx}"
 	if_idx=$((${if_idx:-0} + 1))
@@ -524,6 +524,12 @@ mac80211_prepare_vif() {
 	json_add_object data
 	json_add_string ifname "$ifname"
 	json_close_object
+
+	[ "$mode" == "ap" ] && {
+		[ -z "$wpa_psk_file" ] && hostapd_set_psk "$ifname"
+		[ -z "$vlan_file" ] && hostapd_set_vlan "$ifname"
+	}
+
 	json_select config
 
 	# It is far easier to delete and create the desired interface

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

@@ -262,6 +262,39 @@ hostapd_common_add_bss_config() {
 	config_add_string 'owe_transition_bssid:macaddr' 'owe_transition_ssid:string'
 }
 
+hostapd_set_vlan_file() {
+	local ifname="$1"
+	local vlan="$2"
+	json_get_vars name vid
+	echo "${vid} ${ifname}-${name}" >> /var/run/hostapd-${ifname}.vlan
+	wireless_add_vlan "${vlan}" "${ifname}-${name}"
+}
+
+hostapd_set_vlan() {
+	local ifname="$1"
+
+	rm /var/run/hostapd-${ifname}.vlan
+	for_each_vlan hostapd_set_vlan_file ${ifname}
+}
+
+hostapd_set_psk_file() {
+	local ifname="$1"
+	local vlan="$2"
+	local vlan_id=""
+
+	json_get_vars mac vid key
+	set_default isolate "00:00:00:00:00:00"
+	[ -n "$vid" ] && vlan_id="vlanid=$vid "
+	echo "${vlan_id} ${mac} ${key}" >> /var/run/hostapd-${ifname}.psk
+}
+
+hostapd_set_psk() {
+	local ifname="$1"
+
+	rm /var/run/hostapd-${ifname}.psk
+	for_each_station hostapd_set_psk_file ${ifname}
+}
+
 hostapd_set_bss_options() {
 	local var="$1"
 	local phy="$2"
@@ -377,12 +410,15 @@ hostapd_set_bss_options() {
 			else
 				append bss_conf "wpa_passphrase=$key" "$N"
 			fi
+			[ -z "$wpa_psk_file" ] && set_default wpa_psk_file /var/run/hostapd-$ifname.psk
 			[ -n "$wpa_psk_file" ] && {
 				[ -e "$wpa_psk_file" ] || touch "$wpa_psk_file"
 				append bss_conf "wpa_psk_file=$wpa_psk_file" "$N"
 			}
 			[ "$eapol_version" -ge "1" -a "$eapol_version" -le "2" ] && append bss_conf "eapol_version=$eapol_version" "$N"
 
+			set_default dynamic_vlan 0
+			vlan_possible=1
 			wps_possible=1
 		;;
 		eap|eap192|eap-eap192)
@@ -639,6 +675,7 @@ hostapd_set_bss_options() {
 	[ -n "$vlan_possible" -a -n "$dynamic_vlan" ] && {
 		json_get_vars vlan_naming vlan_tagged_interface vlan_bridge vlan_file
 		set_default vlan_naming 1
+		[ -z "$vlan_file" ] && set_default vlan_file /var/run/hostapd-$ifname.vlan
 		append bss_conf "dynamic_vlan=$dynamic_vlan" "$N"
 		append bss_conf "vlan_naming=$vlan_naming" "$N"
 		[ -n "$vlan_bridge" ] && \