/lib/udev/rules.d/77-mm-huawei-net-port-types.rules is in modemmanager 1.0.0-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | # do not edit this file, it will be overwritten on update
ACTION!="add|change", GOTO="mm_huawei_port_types_end"
ENV{ID_VENDOR_ID}!="12d1", GOTO="mm_huawei_port_types_end"
# Mark the modem and at port flags for ModemManager
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="ff", ATTRS{bInterfaceSubClass}=="01", ATTRS{bInterfaceProtocol}=="01", ENV{ID_MM_HUAWEI_MODEM_PORT}="1"
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="ff", ATTRS{bInterfaceSubClass}=="01", ATTRS{bInterfaceProtocol}=="02", ENV{ID_MM_HUAWEI_AT_PORT}="1"
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="ff", ATTRS{bInterfaceSubClass}=="02", ATTRS{bInterfaceProtocol}=="01", ENV{ID_MM_HUAWEI_MODEM_PORT}="1"
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="ff", ATTRS{bInterfaceSubClass}=="02", ATTRS{bInterfaceProtocol}=="02", ENV{ID_MM_HUAWEI_AT_PORT}="1"
# Only the standard ECM or NCM port can support dial-up with AT NDISDUP through AT port
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="02", ATTRS{bInterfaceSubClass}=="06",ATTRS{bInterfaceProtocol}=="00", ENV{ID_MM_HUAWEI_NDISDUP_SUPPORTED}="1"
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="02", ATTRS{bInterfaceSubClass}=="0d",ATTRS{bInterfaceProtocol}=="00", ENV{ID_MM_HUAWEI_NDISDUP_SUPPORTED}="1"
LABEL="mm_huawei_port_types_end"
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