This project provides a Wi-Fi telemetry library and daemon. It enables realtime collection and reporting of Wi-Fi related events. It can be used in conjunction with the the wifi-ztp project to analyze and collect Wi-Fi zero touch provisioning telemetry as well.

sudo apt install build-essential cmake git liblttng-ust-dev libpci-dev libssl-dev libsystemd-dev pkg-config

Checkout and build:

git clone [email protected]:microsoft/wifi-telemetry.git
cd wifi-telemetry
mkdir build && cd $_
cmake ..
make -j $(nproc)

The central concept is that of a telemetry monitor, represented as WifiTelemetryMonitor. A monitor passively tracks one or more Wi-Fi telemetry sources, represented as WifiTelemetrySource, each of which is optionally bound to a device interface (eg. wlan0) and Wi-Fi operational mode, either station or access-point. Event information is aggregated and translated to lttng events. All telemetry is local and never leaves the device.

The daemon accepts a series of flag tuples for each telemetry source:

This source passively monitors basic Wi-Fi connectivity and Device Provisioning Protocol (DPP aka Wi-Fi EasyConnect) events originating from a wpa_supplicant control socket.

This source passively monitors zero touch provisioning daemon (ztpd) events originating from the ztpd d-bus inteface. Some events are not bound to a specific interface.

$ wifi-telemetryd -s wpa -i wlan0 -o sta
activated telemetry source 'wpa'
telemetry monitor started with 1 of 1 telemetry sources

$ wifi-telemetryd -s wpa -i wlan1 -o station -s ztp
activated telemetry source 'wpa'
activated telemetry source 'ztpd'
telemetry monitor started with 2 of 2 telemetry sources

[email protected]:

[Unit]
Description=Wi-Fi Telemetry Daemon (WPA Station)
Requires=sys-subsystem-net-devices-%i.device
After=sys-subsystem-net-devices-%i.device

[Service]
Type=simple
Restart=on-failure
ExecStart=/usr/sbin/wifi-telemetryd -s wpa -o station -i %i

$ lttng create --live
Live session auto-20210610-220234 created.
Traces will be output to tcp4://127.0.0.1:5342/ [data: 5343]
Live timer interval set to 1000000 us
$ lttng enable-event -u "wifi:* wifi_station:* wifi_dpp:*"
UST event wifi:* wifi_station:* wifi_dpp:* created in channel channel0
$ lttng start
Tracing started for session auto-20210610-220234
$ lttng view
Trace directory: net://localhost/host/apd-d8c0a65935ed/auto-20210610-220234$ lttng create --live
<Wi-Fi tracepoint events...>

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.

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This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

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