modemmanager: start a 3gpp network regsistration

If a 'plmn' is set in the configuration, a registration attempt should be
established before the simple-connect command. If the plmn is set during
the simple-connect, a network change may occur during the connection setup.

To prevent this, the registration is started before the simple-connect with
a separate mmcli command. So that we can be sure that the modem is already
registered in the correct network before the simple-connect command.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

net/modemmanager/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=modemmanager
 PKG_SOURCE_VERSION:=1.22.0
-PKG_RELEASE:=10
+PKG_RELEASE:=11
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://gitlab.freedesktop.org/mobile-broadband/ModemManager.git

net/modemmanager/files/lib/netifd/proto/modemmanager.sh

@@ -466,6 +466,17 @@ proto_modemmanager_setup() {
 		return 1
 	}
 
+	[ -z "${plmn}" ] || {
+		echo "starting network registraion with plmn '${plmn}'..."
+		mmcli --modem="${device}" \
+			--timeout 120 \
+			--3gpp-register-in-operator="${plmn}" || {
+			proto_notify_error "${interface}" MM_3GPP_OPERATOR_REGISTRATION_FAILED
+			proto_block_restart "${interface}"
+			return 1
+		}
+	}
+
 	if [ -z "${allowedmode}" ]; then
 		modemmanager_set_allowed_mode "$device" "$interface" "any"
 	else