modemmanager: report network initiated disconnections to netifd

The new connection dispatcher scripts support integrated in
ModemManager 1.18.8 allows us to provide a openwrt-specific dispatcher
script used to report netifd that the underlying network connection is
down.

See also https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/775

Fixes https://github.com/openwrt/openwrt/issues/8368
Fixes https://github.com/openwrt/packages/issues/14096

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
(cherry picked from commit bc754f31cf)
This commit is contained in:
Aleksander Morgado 2022-05-04 14:01:57 +02:00 committed by Josef Schlehofer
parent 27747109cc
commit 2aff57efdc
2 changed files with 38 additions and 0 deletions

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@ -100,6 +100,9 @@ define Package/modemmanager/install
$(CP) $(PKG_INSTALL_DIR)/usr/lib/ModemManager/libmm-shared-*.so* $(1)/usr/lib/ModemManager
$(CP) $(PKG_INSTALL_DIR)/usr/lib/ModemManager/libmm-plugin-*.so* $(1)/usr/lib/ModemManager
$(INSTALL_DIR) $(1)/usr/lib/ModemManager/connection.d
$(INSTALL_BIN) ./files/10-report-down $(1)/usr/lib/ModemManager/connection.d
$(INSTALL_DIR) $(1)/etc/dbus-1/system.d
$(INSTALL_CONF) $(PKG_INSTALL_DIR)/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf $(1)/etc/dbus-1/system.d

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@ -0,0 +1,35 @@
#!/bin/sh
# SPDX-License-Identifier: CC0-1.0
# 2022 Aleksander Morgado <aleksander@aleksander.es>
#
# Automatically report to netifd that the underlying modem
# is really disconnected
#
# require program name and at least 4 arguments
[ $# -lt 4 ] && exit 1
MODEM_PATH="$1"
BEARER_PATH="$2"
INTERFACE="$3"
STATE="$4"
[ "${STATE}" = "disconnected" ] || exit 0
. /usr/share/ModemManager/modemmanager.common
. /lib/netifd/netifd-proto.sh
INCLUDE_ONLY=1 . /lib/netifd/proto/modemmanager.sh
MODEM_STATUS=$(mmcli --modem="${MODEM_PATH}" --output-keyvalue)
[ -n "${MODEM_STATUS}" ] || exit 1
MODEM_DEVICE=$(modemmanager_get_field "${MODEM_STATUS}" "modem.generic.device")
[ -n "${MODEM_DEVICE}" ] || exit 2
CFG=$(mm_get_modem_config "${MODEM_DEVICE}")
[ -n "${CFG}" ] || exit 3
logger -t "modemmanager" "interface ${CFG} (network device ${INTERFACE}) ${STATE}"
proto_init_update $INTERFACE 0
proto_send_update $CFG
exit 0