bbr tcp

flake.nix

@@ -15,6 +15,7 @@
           ./modules/xconfig.nix
           ./modules/zsh.nix
           ./modules/prometheus.nix
+          ./modules/kernel.nix
         ];
 
       };
@@ -24,6 +25,7 @@
           ./modules/vim.nix
           ./modules/zsh.nix
           ./modules/prometheus.nix
+          ./modules/kernel.nix
         ];
       };
 

modules/kernel.nix

@@ -0,0 +1,17 @@
+{ ... }:
+with lib;
+let cfg = config.voidcruiser.kernelTweaks;
+in {
+  options.voidcruiser.kernelTweaks = {
+    enable = mkEnableOption "Enables kernel tweaks";
+  };
+  config = mkIf cfg.enable {
+    boot = {
+      kernelModules = [ "tcp_bbr" ];
+      kernel.sysctl = {
+        "net.ipv4.tcp_congestion_control" = "bbr";
+        "net.core.default_qdisc" = "fq";
+      };
+    };
+  };
+}