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comgt: ncm: try to detect interface for ttyACM ports

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Some modems expose ttyACM as their control ports, which have the
"device" symlink pointing one level down in sysfs tree. Try to find
network interfaces for them as well, this is commonly used for modems
exposing ACM + RNDIS or ACM + ECM interface combinations.

Co-developed-by: Cezary Jackiewicz <cezary@eko.one.pl>
Signed-off-by: Cezary Jackiewicz <cezary@eko.one.pl>
Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
This commit is contained in:
Lech Perczak 2022-03-31 21:16:34 +02:00 committed by Hauke Mehrtens
parent b2940bb8b2
commit ed7957810c
1 changed files with 4 additions and 0 deletions
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4
package/network/utils/comgt/files/ncm.sh
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@ -57,6 +57,10 @@ proto_ncm_setup() {
[ -z "$ifname" ] && {
devname="$(basename "$device")"
case "$devname" in
'ttyACM'*)
devpath="$(readlink -f /sys/class/tty/$devname/device)"
ifpath="$devpath/../*/net"
;;
'tty'*)
devpath="$(readlink -f /sys/class/tty/$devname/device)"
ifpath="$devpath/../../*/net"