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When a USB modem device is unplugged, we had to do two different things: first, cleanup the sysfs cache; and second, set interface as unavailable. Those two things were never being done properly due to several different issues: * The parent sysfs path retrieval logic relies on checking for which sysfs path has the vid/pid files. This logic obviously only works when the device is available, and cannot be used on e.g. removal events. * The command to cleanup the modem wait status from the sysfs cache was not removing the previous state properly, because the sysfs path variable wasn't escaped properly for the sed command. This patch handles those issues in order to have a proper device removal handling, by making sure the sysfs path is properly escaped in the sed command, and by introducing a new hotplug script that runs when the full USB device is removed. Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
OpenWrt ModemManager
Description
Cellular modem control and connectivity
Optional libraries libmbim and libqmi are available. Optional mbim-utils and qmi-utils are available. Your modem may require additional kernel modules.
Usage
Once installed, you can configure the 2G/3G/4G modem connections directly in
/etc/config/network as in the following example:
config interface 'broadband'
option device '/sys/devices/platform/soc/20980000.usb/usb1/1-1/1-1.2/1-1.2.1'
option proto 'modemmanager'
option apn 'ac.vodafone.es'
option username 'vodafone'
option password 'vodafone'
option pincode '7423'
option lowpower '1'