openwrt/package/network/utils/comgt/files/ncm.sh
Lech Perczak b2940bb8b2 comgt: ncm: select first available network interface for device
Some modems expose multiple network interfaces on the same USB device,
causing the connection setup script to fail, because glob matching in
the detection phase causes 'ls' to output more than one interface name
plus their base directories in sysfs. Avoid that by listing the
directories explicitly and then selecting first available interface.
This is the case for some variants of ZTE MF286R built-in modem, which
exposes both RNDIS and CDC-ECM network interfaces, causing the
connection setup to fail.

Signed-off-by: Lech Perczak <lech.perczak@gmail.com>
2022-04-16 14:02:11 +02:00

261 lines
6.5 KiB
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#!/bin/sh
[ -n "$INCLUDE_ONLY" ] || {
. /lib/functions.sh
. ../netifd-proto.sh
init_proto "$@"
}
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
proto_config_add_string password
proto_config_add_string pincode
proto_config_add_string delay
proto_config_add_string mode
proto_config_add_string pdptype
proto_config_add_int profile
proto_config_add_defaults
}
proto_ncm_setup() {
local interface="$1"
local manufacturer initialize setmode connect finalize devname devpath ifpath
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"
[ -n "$profile" ] || profile=1
pdptype=$(echo "$pdptype" | awk '{print toupper($0)}')
[ "$pdptype" = "IP" -o "$pdptype" = "IPV6" -o "$pdptype" = "IPV4V6" ] || pdptype="IP"
[ -n "$ctl_device" ] && device=$ctl_device
[ -n "$device" ] || {
echo "No control device specified"
proto_notify_error "$interface" NO_DEVICE
proto_set_available "$interface" 0
return 1
}
device="$(readlink -f $device)"
[ -e "$device" ] || {
echo "Control device not valid"
proto_set_available "$interface" 0
return 1
}
[ -z "$ifname" ] && {
devname="$(basename "$device")"
case "$devname" in
'tty'*)
devpath="$(readlink -f /sys/class/tty/$devname/device)"
ifpath="$devpath/../../*/net"
;;
*)
devpath="$(readlink -f /sys/class/usbmisc/$devname/device/)"
ifpath="$devpath/net"
;;
esac
ifname="$(ls $(ls -1 -d $ifpath | head -n 1))"
}
[ -n "$ifname" ] || {
echo "The interface could not be found."
proto_notify_error "$interface" NO_IFACE
proto_set_available "$interface" 0
return 1
}
[ -n "$delay" ] && sleep "$delay"
manufacturer=$(gcom -d "$device" -s /etc/gcom/getcardinfo.gcom | awk 'NF && $0 !~ /AT\+CGMI/ { sub(/\+CGMI: /,""); print tolower($1); exit; }')
[ $? -ne 0 -o -z "$manufacturer" ] && {
echo "Failed to get modem information"
proto_notify_error "$interface" GETINFO_FAILED
return 1
}
json_load "$(cat /etc/gcom/ncm.json)"
json_select "$manufacturer"
[ $? -ne 0 ] && {
echo "Unsupported modem"
proto_notify_error "$interface" UNSUPPORTED_MODEM
proto_set_available "$interface" 0
return 1
}
json_get_values initialize initialize
for i in $initialize; do
eval COMMAND="$i" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
echo "Failed to initialize modem"
proto_notify_error "$interface" INITIALIZE_FAILED
return 1
}
done
[ -n "$pincode" ] && {
PINCODE="$pincode" gcom -d "$device" -s /etc/gcom/setpin.gcom || {
echo "Unable to verify PIN"
proto_notify_error "$interface" PIN_FAILED
proto_block_restart "$interface"
return 1
}
}
json_get_values configure configure
echo "Configuring modem"
for i in $configure; do
eval COMMAND="$i" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
echo "Failed to configure modem"
proto_notify_error "$interface" CONFIGURE_FAILED
return 1
}
done
[ -n "$mode" ] && {
json_select modes
json_get_var setmode "$mode"
[ -n "$setmode" ] && {
echo "Setting mode"
eval COMMAND="$setmode" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
echo "Failed to set operating mode"
proto_notify_error "$interface" SETMODE_FAILED
return 1
}
}
json_select ..
}
echo "Starting network $interface"
json_get_vars connect
[ -n "$connect" ] && {
echo "Connecting modem"
eval COMMAND="$connect" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
echo "Failed to connect"
proto_notify_error "$interface" CONNECT_FAILED
return 1
}
}
json_get_vars finalize
echo "Setting up $ifname"
proto_init_update "$ifname" 1
proto_add_data
json_add_string "manufacturer" "$manufacturer"
proto_close_data
proto_send_update "$interface"
local zone="$(fw3 -q network "$interface" 2>/dev/null)"
[ "$pdptype" = "IP" -o "$pdptype" = "IPV4V6" ] && {
json_init
json_add_string name "${interface}_4"
json_add_string ifname "@$interface"
json_add_string proto "dhcp"
proto_add_dynamic_defaults
[ -n "$zone" ] && {
json_add_string zone "$zone"
}
json_close_object
ubus call network add_dynamic "$(json_dump)"
}
[ "$pdptype" = "IPV6" -o "$pdptype" = "IPV4V6" ] && {
json_init
json_add_string name "${interface}_6"
json_add_string ifname "@$interface"
json_add_string proto "dhcpv6"
json_add_string extendprefix 1
proto_add_dynamic_defaults
[ -n "$zone" ] && {
json_add_string zone "$zone"
}
json_close_object
ubus call network add_dynamic "$(json_dump)"
}
[ -n "$finalize" ] && {
eval COMMAND="$finalize" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
echo "Failed to configure modem"
proto_notify_error "$interface" FINALIZE_FAILED
return 1
}
}
}
proto_ncm_teardown() {
local interface="$1"
local manufacturer disconnect
local device profile
json_get_vars device profile
[ -n "$ctl_device" ] && device=$ctl_device
[ -n "$device" ] || {
echo "No control device specified"
proto_notify_error "$interface" NO_DEVICE
proto_set_available "$interface" 0
return 1
}
device="$(readlink -f $device)"
[ -e "$device" ] || {
echo "Control device not valid"
proto_set_available "$interface" 0
return 1
}
[ -n "$profile" ] || profile=1
echo "Stopping network $interface"
json_load "$(ubus call network.interface.$interface status)"
json_select data
json_get_vars manufacturer
[ $? -ne 0 -o -z "$manufacturer" ] && {
# Fallback to direct detect, for proper handle device replug.
manufacturer=$(gcom -d "$device" -s /etc/gcom/getcardinfo.gcom | awk 'NF && $0 !~ /AT\+CGMI/ { sub(/\+CGMI: /,""); print tolower($1); exit; }')
[ $? -ne 0 -o -z "$manufacturer" ] && {
echo "Failed to get modem information"
proto_notify_error "$interface" GETINFO_FAILED
return 1
}
json_add_string "manufacturer" "$manufacturer"
}
json_load "$(cat /etc/gcom/ncm.json)"
json_select "$manufacturer" || {
echo "Unsupported modem"
proto_notify_error "$interface" UNSUPPORTED_MODEM
return 1
}
json_get_vars disconnect
[ -n "$disconnect" ] && {
eval COMMAND="$disconnect" gcom -d "$device" -s /etc/gcom/runcommand.gcom || {
echo "Failed to disconnect"
proto_notify_error "$interface" DISCONNECT_FAILED
return 1
}
}
proto_init_update "*" 0
proto_send_update "$interface"
}
[ -n "$INCLUDE_ONLY" ] || {
add_protocol ncm
}