hostapd: add owe_transition_ifname

Add the owe_transition_ifname config option to wifi-ifaces.

This allows to configure OWE transition VAPs without adding SSID / BSSID
to the uci conifg but instead autodiscovering these parameters from
other networks on the same PHY.

The following configuration creates a OWE transition mode network
constellation.

config wifi-iface 'open0'
	option device 'radio0'
	option ifname 'open0'
	option network 'lan'
	option mode 'ap'
	option ssid 'FreeNet'
	option encryption 'none'
	option owe_transition_ifname 'owe0'

config wifi-iface 'owe0'
	option device 'radio0'
	option ifname 'owe0'
	option network 'lan'
	option mode 'ap'
	option ssid 'owe_tm.FreeNet'
	option encryption 'owe'
	option hidden '1'
	option owe_transition_ifname 'open0'

Signed-off-by: David Bauer <[email protected]>

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

@@ -335,6 +335,7 @@ hostapd_common_add_bss_config() {
 	config_add_int sae_pwe
 
 	config_add_string 'owe_transition_bssid:macaddr' 'owe_transition_ssid:string'
+	config_add_string owe_transition_ifname
 
 	config_add_boolean iw_enabled iw_internet iw_asra iw_esr iw_uesa
 	config_add_int iw_access_network_type iw_venue_group iw_venue_type
@@ -635,10 +636,11 @@ hostapd_set_bss_options() {
 
 	case "$auth_type" in
 		none|owe)
-			json_get_vars owe_transition_bssid owe_transition_ssid
+			json_get_vars owe_transition_bssid owe_transition_ssid owe_transition_ifname
 
 			[ -n "$owe_transition_ssid" ] && append bss_conf "owe_transition_ssid=\"$owe_transition_ssid\"" "$N"
 			[ -n "$owe_transition_bssid" ] && append bss_conf "owe_transition_bssid=$owe_transition_bssid" "$N"
+			[ -n "$owe_transition_ifname" ] && append bss_conf "owe_transition_ifname=$owe_transition_ifname" "$N"
 
 			wps_possible=1
 			# Here we make the assumption that if we're in open mode