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comgt: ncm: allow specification of interface name

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Add ifname property to UCI, which can be used to override the
autodetected interface name in case the detection fails due to having
none or more than one interface exposed by the modem, which is not
explicitly linked to TTY port. This is needed on certain variants of ZTE
MF286R built-in modem, which exposes both RNDIS and CDC-ECM interfaces
on the modem, on which the automatic detection may select the wrong
network interface.

Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
This commit is contained in:
Lech Perczak 2022-03-31 21:16:01 +02:00 committed by Hauke Mehrtens
parent c99013e242
commit a67629bbe2
1 changed files with 18 additions and 14 deletions
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32
package/network/utils/comgt/files/ncm.sh
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@ -10,6 +10,7 @@ proto_ncm_init_config() {
no_device=1
available=1
proto_config_add_string "device:device"
proto_config_add_string ifname
proto_config_add_string apn
proto_config_add_string auth
proto_config_add_string username
@ -25,10 +26,10 @@ proto_ncm_init_config() {
proto_ncm_setup() {
local interface="$1"
local manufacturer initialize setmode connect finalize ifname devname devpath
local manufacturer initialize setmode connect finalize devname devpath
local device apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
json_get_vars device apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
local device ifname apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
json_get_vars device ifname apn auth username password pincode delay mode pdptype profile $PROTO_DEFAULT_OPTIONS
[ "$metric" = "" ] && metric="0"
@ -53,17 +54,20 @@ proto_ncm_setup() {
return 1
}
devname="$(basename "$device")"
case "$devname" in
'tty'*)
devpath="$(readlink -f /sys/class/tty/$devname/device)"
ifname="$( ls "$devpath"/../../*/net )"
;;
*)
devpath="$(readlink -f /sys/class/usbmisc/$devname/device/)"
ifname="$( ls "$devpath"/net )"
;;
esac
[ -z "$ifname" ] && {
devname="$(basename "$device")"
case "$devname" in
'tty'*)
devpath="$(readlink -f /sys/class/tty/$devname/device)"
ifname="$( ls "$devpath"/../../*/net )"
;;
*)
devpath="$(readlink -f /sys/class/usbmisc/$devname/device/)"
ifname="$( ls "$devpath"/net )"
;;
esac
}
[ -n "$ifname" ] || {
echo "The interface could not be found."
proto_notify_error "$interface" NO_IFACE