802.11s: fix authsae support in netifd

This patch implements support for 802.11s protected mesh wireless networks (using authsae) in the netifd framework.

Until meshd-nl80211 implements a proper -P option for the PID file, this uses shell backgrounding in order to be able to get the PID for the process.

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

SVN-Revision: 40497

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

@@ -449,6 +449,7 @@ mac80211_setup_adhoc() {
 
 mac80211_setup_vif() {
 	local name="$1"
+	local failed
 
 	json_select data
 	json_get_vars ifname
@@ -473,7 +474,19 @@ mac80211_setup_vif() {
 				json_get_var mp_val "$var"
 				[ -n "$mp_val" ] && iw dev "$ifname" set mesh_param "$var" "$mp_val"
 			done
-			# todo: authsae
+
+			# authsae
+			json_get_vars key
+			if [ -n "$key" ]; then
+				if [ -e "/lib/wifi/authsae.sh" ]; then
+					. /lib/wifi/authsae.sh
+					authsae_start_interface || failed=1
+				else
+					wireless_setup_vif_failed AUTHSAE_NOT_INSTALLED
+					json_select ..
+					return
+				fi
+			fi
 		;;
 		adhoc)
 			wireless_vif_parse_encryption

package/network/services/authsae/files/lib/wifi/authsae.sh

@@ -1,28 +1,24 @@
 authsae_start_interface() {
-	local device="$1" # to use the correct channel
-	local vif="$2"
-	local band
+	local mcast_rate
+	local mesh_htmode
+	local mesh_band
+	local authsae_conf_file="/var/run/authsae-$ifname.cfg"
+	local ret=1
 
-	cfgfile="/var/run/authsae-$vif.cfg"
-	config_get channel "$device" channel
-	config_get hwmode "$device" hwmode
-	config_get htmode "$device" htmode
-	config_get ifname "$vif" ifname
-	config_get key "$vif" key
-	config_get mesh_id "$vif" mesh_id
-	config_get mcast_rate "$vif" mcast_rate "12"
+	json_get_vars mcast_rate
+	set_default mcast_rate "12"
 
 	case "$htmode" in
-		HT20|HT40+|HT40-) htmode="$htmode";;
-		NOHT|none|*) htmode="none";;
+		HT20|HT40+|HT40-) mesh_htmode="$htmode";;
+		*) mesh_htmode="none";;
 	esac
 
 	case "$hwmode" in
-		*g*) band=11g;;
-		*a*) band=11a;;
+		*g*) mesh_band=11g;;
+		*a*) mesh_band=11a;;
 	esac
 
-	cat > "$cfgfile" <<EOF
+	cat > "$authsae_conf_file" <<EOF
 authsae:
 {
  sae:
@@ -41,13 +37,21 @@ authsae:
     passive = 0;
     debug = 0;
     mediaopt = 1;
-    band = "$band";
+    band = "$mesh_band";
     channel = $channel;
-    htmode = "$htmode";
+    htmode = "$mesh_htmode";
     mcast-rate = $mcast_rate;
   };
 };
 EOF
-	ifconfig "$ifname" up
-	meshd-nl80211 -i "$ifname" -s "$mesh_id" -c "$cfgfile" -B
+
+	/usr/bin/meshd-nl80211 -i "$ifname" -s "$mesh_id" -c "$authsae_conf_file" </dev/null >/dev/null 2>/dev/null &
+	authsae_pid="$!"
+	ret="$?"
+
+	echo $authsae_pid > /var/run/authsae-$ifname.pid
+	wireless_add_process "$authsae_pid" "/usr/bin/meshd-nl80211" 1
+
+	[ "$ret" != 0 ] && wireless_setup_vif_failed AUTHSAE_FAILED
+	return $ret
 }

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

@@ -586,5 +586,5 @@ wpa_supplicant_run() {
 }
 
 hostapd_common_cleanup() {
-	killall hostapd wpa_supplicant
+	killall hostapd wpa_supplicant meshd-nl80211
 }