Felix Fietkau <n...@nbd.name> [2016-10-20 12:09:36]:
> On 2016-10-19 23:49, Petr Štetiar wrote:
> >
> > How to fix it for both use cases, with and without autoconnect feature?
> > Introduce qmi_autoconnect config option?
>
> I think we probably need to introduce such an option as a temporary
> measure.
Ok, I'll do this. Is this variable name fine?
> The problem with not using autoconnect is that once the link is gone for a
> while, the link will be torn down and not re-established anymore. To deal
> with that properly, we need some code to monitor the link and try to
> re-establish the connection when it's gone.
Even when enabled and usable, this autoconnect feature is as reliable as the
modem firmware is. I'm seeing a lot of problems with such modems(freezing,
unable to connect) and I generally do not trust them so I use some additional
checking via my custom wan-connection-keeper daemon/script which runs following
check in periodic intervals:
check_connection() {
local wan_iface=$(uci -q get
wan-connection-keeper.core.wan_interface)
local check_timeout=$(uci -q get
wan-connection-keeper.core.check_timeout)
local uci_check_url=$(uci -q get
wan-connection-keeper.core.uci_check_url)
local url=$(uci -q get $uci_check_url)
[ -z "$url" ] && {
log_dbg "ERROR, check URL is empty"
return 1
}
[ -z "$wan_iface" ] && {
log_dbg "ERROR, WAN interface is empty"
return 1
}
[ -z $check_timeout ] && check_timeout=5
log_dbg "Checking URL: $url timeout: $check_timeout"
curl -s -m$check_timeout -H "User-Agent: $NAME v$VERSION" $url>
/dev/null && {
log_dbg "Connection check OK!"
return 1
}
log_dbg "ERROR, connection failed, restarting $wan_iface"
echo oneshot > /sys/class/leds/reset-usb-hub2/trigger
echo none > /sys/class/leds/reset-usb-hub2/trigger
ifdown $wan_iface
ubus call network.interface.$wan_iface remove
pkill -9 uqmi
sleep 5
ifup $wan_iface
/etc/init.d/ugps restart # TODO: move somewhere else
return 0
}
How to make it more generic as you propose. Move it inside netifd?
config interface 'wan'
option connection_check '/path/to/checkscript'
option connection_check_interval 60
-- ynezz
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