BBR to Raspberry Pi

Automated BBRv3 Kernel Builder for Raspberry Pi

This project automatically builds a custom Linux Kernel for Raspberry Pi that combines:

1. Official Raspberry Pi Source: Ensures full hardware support (WiFi, Bluetooth, GPIO, VideoCore).
2. Google BBRv3 TCP Stack: Adds the latest congestion control algorithm for improved network throughput and lower latency.
3. Your Custom Config: Uses a configuration extracted from a working Pi to minimize bloat and maximize compatibility.

🚀 How It Works

This repository uses GitHub Actions to perform automated builds:

• Triggers: Builds run when the Raspberry Pi kernel (rpi-6.13.y) or Google BBRv3 (v3) branches are updated
• Weekly Check: Also checks weekly to ensure we don't miss any updates

Build process:

1. Clones the latest rpi-6.13.y kernel source from the Raspberry Pi Engineering team.
2. Merges the v3 branch from Google's BBR repository.
3. Applies the pi.config (hardware configuration).
4. Cross-compiles the kernel for ARM64.
5. Releases the result as installable .deb packages.

📦 Latest Release

📥 Download Latest Release

Installation

No need to build anything yourself! Just download the latest release.

1. Go to the Releases Page.
2. Download the .deb files:
   • linux-image-...deb (required - the kernel itself)
   • linux-headers-...deb (optional - for building modules)
   • linux-libc-dev-...deb (optional - for development)
3. Transfer them to your Raspberry Pi.
4. Install:

   sudo dpkg -i linux-image-*.deb

5. Reboot:

   sudo reboot

6. Verify BBRv3 is running:

   uname -r
   # Should see "bbrv3" in the name
   sysctl net.ipv4.tcp_congestion_control
   # Should return "bbr"

🔄 Build Triggers

The workflow automatically builds when:

• 📌 Manual trigger: You can manually trigger a build from the Actions tab
• 🔍 Weekly check: Checks upstream repos every Sunday at 2:00 UTC and builds if there are new commits

🛠 Manual Build (Docker)

If you prefer to build it yourself locally on a Mac or Linux machine:

1. Run the auto-builder script:

   ./auto_update_hybrid.sh "your_pi_password"

   This will SSH into your Pi to get the config, build the kernel in Docker, and deploy it back to the Pi automatically.

📝 Configuration

The pi.config file in this repository is the kernel configuration used for the build. It was extracted from a working Raspberry Pi 4/5 environment.

🔗 Sources

• Raspberry Pi Linux Kernel
• Google BBRv3

⚖️ License

Dual BSD/GPL (Inherited from Linux Kernel).