Initial commit

Makefile

+all: network-config qmi-service qmi-monitor-timer qmi-monitor-service
+	tar xf libqmi-1.38.0.tar.xz
+	mkdir libqmi-1.38.0/build
+	cd libqmi-1.38.0/build && meson --prefix=/usr --buildtype=release -D bash_completion=false -D qrtr=false -D man=false -Dudev=false -Dmbim_qmux=false -Dintrospection=false ..
+	cd libqmi-1.38.0/build && ninja
+	cd libqmi-1.38.0/build && ninja test
+	cd libqmi-1.38.0/build && ninja install
+	@echo "$$NETWORK_CONFIG" > /etc/systemd/network/wwan0.network
+	install -m 0755 qmi-stats /usr/sbin
+	install -m 0755 qmi-monitor /usr/sbin
+	@echo "$$QMI_SERVICE" > /lib/systemd/system/qmi.service
+	systemctl enable qmi.service
+	@echo "$$QMI_MONITOR_TIMER" > /lib/systemd/system/qmi-monitor.timer
+	@echo "$$QMI_MONITOR_SERVICE" > /lib/systemd/system/qmi-monitor.service
+	systemctl enable qmi-monitor.timer
+	rm -rf libqmi-1.38.0
+
+all: network-config
+
+network-config:
+define NETWORK_CONFIG
+[Match]
+Name=wwan0
+
+[Network]
+DHCP=ipv4
+
+[DHCP]
+RouteMetric=2048
+endef
+export NETWORK_CONFIG
+
+qmi-service:
+define QMI_SERVICE
+[Unit]
+Description=Start QMI data session
+After=dev-cdc\x2dwdm0.device sys-subsystem-net-devices-wwan0.device
+Requires=dev-cdc\x2dwdm0.device
+BindsTo=dev-cdc\x2dwdm0.device
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+
+ExecStartPre=/bin/sh -c 'echo Y > /sys/class/net/wwan0/qmi/raw_ip'
+ExecStart=/usr/bin/qmicli -d /dev/cdc-wdm0 --device-open-proxy --wds-start-network="ip-type=4" --client-no-release-cid
+ExecStop=/usr/bin/qmicli -d /dev/cdc-wdm0 --device-open-proxy --wds-stop-network=0xffffffff
+
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+endef
+export QMI_SERVICE
+
+qmi-monitor-timer:
+define QMI_MONITOR_TIMER
+[Unit]
+Description=Monitor QMI connection
+
+[Timer]
+OnBootSec=30
+OnUnitActiveSec=30
+
+[Install]
+WantedBy=timers.target
+endef
+export QMI_MONITOR_TIMER
+
+qmi-monitor-service:
+define QMI_MONITOR_SERVICE
+[Unit]
+Description=Check QMI connection
+
+[Service]
+Type=oneshot
+ExecStart=/usr/sbin/qmi-monitor
+endef
+export QMI_MONITOR_SERVICE

qmi-monitor

+#!/bin/sh
+
+DEVICE=/dev/cdc-wdm0
+
+# Check if session is alive (has IP)
+if ! qmicli -d "$DEVICE" --wds-get-current-settings 2>/dev/null | grep -q "IPv4 address"; then
+    echo "QMI disconnected, restarting..."
+    systemctl restart qmi.service
+fi

qmi-stats

+#!/bin/bash
+# Script to output modem info in JSON for Zabbix UserParameter
+# Requires qmicli
+
+DEVICE="/dev/cdc-wdm0"
+
+# Get serving system info (tech)
+tech=$(qmicli -d "$DEVICE" --nas-get-serving-system | awk -F"'" '/Radio interfaces:/ {getline; gsub(/[\[\]:]/,""); print $2; exit}')
+
+# Get signal info from serving LTE cell
+read -r rsrp rsrq rssi snr <<<$(qmicli -d "$DEVICE" --nas-get-signal-info \
+    | awk -F"'" '/RSRP|RSRQ|RSSI|SNR/ {gsub(/[^0-9\.\-]/,"",$2); printf "%s ", $2} END{print ""}')
+
+# Get channel rates
+read -r tx rx max_tx max_rx <<<$(qmicli -d "$DEVICE" --wds-get-channel-rates \
+    | awk -F: '/Current TX rate/ {gsub(/[^0-9]/,"",$2); tx=$2} \
+               /Current RX rate/ {gsub(/[^0-9]/,"",$2); rx=$2} \
+               /Max TX rate/ {gsub(/[^0-9]/,"",$2); max_tx=$2} \
+               /Max RX rate/ {gsub(/[^0-9]/,"",$2); max_rx=$2} \
+               END{if(tx=="") tx=0; if(rx=="") rx=0; print tx,rx,max_tx,max_rx}')
+
+# Build JSON
+cat <<EOF
+{
+  "tech": "$tech",
+  "rsrp": $rsrp,
+  "rsrq": $rsrq,
+  "rssi": $rssi,
+  "snr": $snr,
+  "tx": $tx,
+  "rx": $rx,
+  "max_tx": $max_tx,
+  "max_rx": $max_rx
+}
+EOF