Merge pull request #16936 from aleksander0m/aleksander/mm-wwan-subsystem

modemmanager: add support for wwan subsystem in hotplug

net/modemmanager/Makefile

@@ -131,6 +131,9 @@ define Package/modemmanager/install
 	$(INSTALL_DIR) $(1)/etc/hotplug.d/tty
 	$(INSTALL_DATA) ./files/25-modemmanager-tty $(1)/etc/hotplug.d/tty
 
+	$(INSTALL_DIR) $(1)/etc/hotplug.d/wwan
+	$(INSTALL_DATA) ./files/25-modemmanager-wwan $(1)/etc/hotplug.d/wwan
+
 	$(INSTALL_DIR) $(1)/lib/netifd/proto
 	$(INSTALL_BIN) ./files/modemmanager.proto $(1)/lib/netifd/proto/modemmanager.sh
 endef

net/modemmanager/files/25-modemmanager-wwan

@@ -0,0 +1,15 @@
+#!/bin/sh
+# Copyright (C) 2021 Aleksander Morgado <aleksander@aleksander.es>
+
+# Load hotplug common utilities
+. /usr/share/ModemManager/modemmanager.common
+
+# We require a device name
+[ -n "$DEVNAME" ] || exit
+
+# Always make sure the rundir exists
+mkdir -m 0755 -p "${MODEMMANAGER_RUNDIR}"
+
+# Report wwan
+mm_log "${ACTION} wwan control port ${DEVNAME}: event processed"
+mm_report_event "${ACTION}" "${DEVNAME}" "wwan" "/sys${DEVPATH}"