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Add Udev rules for the framwork realtek ethernet usb so when it's unplugged the wifi turns on and when it's plugged in the wifi turns off.

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This commit is contained in:
Joseph Hanson 2024-07-30 14:38:36 -05:00
parent 7aae607601
commit 1e4e70bfa3
Signed by: jahanson
SSH key fingerprint: SHA256:vy6dKBECV522aPAwklFM3ReKAVB086rT3oWwiuiFG7o
3 changed files with 52 additions and 0 deletions
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1
nixos/hosts/telchar/default.nix
View file

@ -48,5 +48,6 @@
system.motd.networkInterfaces = [ "wlp1s0" ];
security._1password.enable = true;
system.fingerprint-reader-on-laptop-lid.enable = true;
framework_wifi_swap.enable = true;
};
}

1
nixos/modules/nixos/system/default.nix
View file

@ -12,6 +12,7 @@
./security.nix
./systempackages.nix
./time.nix
./wifi_swap
./zfs.nix
];
}

50
nixos/modules/nixos/system/wifi_swap/default.nix Normal file
View file

@ -0,0 +1,50 @@
# turns off the wifi when the usb device 0bda:8156 is connected.
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.mySystem.framework_wifi_swap;
wifiSwap = pkgs.writeShellScriptBin "wifi_swap"
''
#! /usr/bin/env bash
# This script turns off the wifi and on when the usb device 0bda:8156 is connected or removed.
# It is useful when you want to use a wired connection instead of wifi.
# The script is run by udev when the usb device is connected.
# The script is located at /run/current-system/sw/bin/wifi_swap
# The udev rule is located at <nix-store>-extra-udev-rules/etc/udev/rules.d/99-local.rules
# The udev rule is:
# ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="0bda", ATTR{idProduct}=="8156", RUN+="/run/current-system/sw/bin/wifi_swap"
# ACTION=="remove", SUBSYSTEM=="net", ENV{ID_USB_VENDOR_ID}=="0bda", ENV{ID_USB_MODEL_ID}=="8156", RUN+="/run/current-system/sw/bin/wifi_swap"
echo "wifi_swap ACTION: $ACTION" | systemd-cat -t wifi_swap
# Case or switch for $ACTION
case $ACTION in
add)
echo "Plugged in USB device 0bda:8156 (Realtek 2.5gbe). Turning Wi-Fi off." | systemd-cat -t wifi_swap
${pkgs.networkmanager.outPath}/bin/nmcli radio wifi off
;;
remove)
echo "unplugged in USB device 0bda:8156 (Realtek 2.5gbe) Turning Wi-Fi on." | systemd-cat -t wifi_swap
${pkgs.networkmanager.outPath}/bin/nmcli radio wifi on
;;
*)
echo "Uknown ACTION: $ACTION" | systemd-cat -t wifi_swap
;;
esac
'';
in
{
options.mySystem.framework_wifi_swap = {
enable = mkEnableOption "framework_wifi_swap" // { default = false; };
};
config = mkIf cfg.enable {
# Create bash script and add it to nix store
environment.systemPackages = [
wifiSwap
];
# Add udev rule to run script when usb device 0bda:8156 is connected or disconnected.
services.udev.extraRules = ''
ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="0bda", ATTR{idProduct}=="8156", RUN+="${wifiSwap.outPath}/bin/wifi_swap"
ACTION=="remove", SUBSYSTEM=="net", ENV{ID_USB_VENDOR_ID}=="0bda", ENV{ID_USB_MODEL_ID}=="8156", RUN+="${wifiSwap.outPath}/bin/wifi_swap"
'';
};
}