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Add wwan status check

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Fabian Hauser 2020-03-08 14:52:10 +00:00
parent 4253b340ff
commit aff3512244
2 changed files with 43 additions and 11 deletions
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2
host/achiles.nix
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@ -48,7 +48,7 @@ in
services.wwan = {
enable = true;
apn = "gprs.swisscom.ch";
networkInterface = "wwp0s19u1u3i12";
networkInterface = routerConfig.wanInterface;
};
# Use the GRUB 2 boot loader.

52
role/networking/wwan.nix
View file

@ -1,16 +1,29 @@
# Based on https://github.com/jgillich/nixos/blob/master/services/ppp.nix
# Tipps and tricks under https://www.hackster.io/munoz0raul/how-to-use-gsm-3g-4g-in-embedded-linux-systems-9047cf#toc-configuring-the-ppp-files-5
# TODO: http://www.embeddedpi.com/documentation/3g-4g-modems/raspberry-pi-sierra-wireless-mc7455-modem-raw-ip-qmi-interface-setup
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.wwan;
mbim-ip-configured = pkgs.writeScriptBin "mbim-ip-configured" (''
#!${pkgs.stdenv.shell}
MBIM_INTERFACE=${cfg.mbimInterface}
'' + (readFile ./wwan/mbim-ip.bash));
mbim-check-status = pkgs.writeScriptBin "mbim-check-status" ''
#!${pkgs.stdenv.shell}
if ! systemctl is-active --quiet wwan.service; then
# Skip check if wwan is not running
exit 0
fi
if ! mbim-network ${cfg.mbimInterface} status | grep -q "Status: activated"; then
echo "WWAN device is currently in disabled state, triggering restart."
systemctl restart wwan.service
fi
'';
in
{
options.services.wwan = {
@ -70,17 +83,36 @@ in
};
config = mkIf cfg.enable {
systemd.services."wwan" = {
description = "WWAN connectivity";
wantedBy = [ "network.target" ];
bindsTo = [ "network-addresses-${cfg.networkInterface}.service" ];
path = [ pkgs.libmbim pkgs.iproute ];
systemd.services = {
"wwan" = {
description = "WWAN connectivity";
wantedBy = [ "network.target" ];
bindsTo = [ "network-addresses-${cfg.networkInterface}.service" ];
path = with pkgs; [ libmbim iproute ];
serviceConfig = {
ExecStart = "${mbim-ip-configured}/bin/mbim-ip-configured start ${cfg.networkInterface}";
ExecStop = "${mbim-ip-configured}/bin/mbim-ip-configured stop ${cfg.networkInterface}";
serviceConfig = {
ExecStart = "${mbim-ip-configured}/bin/mbim-ip-configured start ${cfg.networkInterface}";
ExecStop = "${mbim-ip-configured}/bin/mbim-ip-configured stop ${cfg.networkInterface}";
RemainAfterExit = true;
RemainAfterExit = true;
};
};
"wwan-check" = {
description = "Check WWAN connectivity and restart if disabled";
path = with pkgs; [ libmbim ];
serviceConfig = {
Type = "oneshot";
ExecStart = "${mbim-check-status}/bin/mbim-check-status";
};
};
};
systemd.timers."wwan-check" = {
description = "WWAN connectivity check";
wantedBy = [ "timers.target" ];
timerConfig = {
Unit = "wwan-check";
OnBootSec="2m";
OnUnitActiveSec="1m";
};
};