MPTCP on Raspberry Pi 4B? Yes, it's possible.

Note

These scripts follow the Raspberry Pi Cross-compile Documentation.

First of all, you will need to clone this repo:

git clone https://github.com/tiagojoseas/raspberry-mptcp

Important

This script will mount the Linux system onto an SD card with 16GB or more. Ensure you have one inserted and detectable on your machine.
You can verify this using the lsblk command to check for sdX devices. For example:

sda          29.1G                 
├─sda1        256M vfat     boot   /media/<...>
└─sda2       28.9G ext4     rootfs /media/<...>

After identifying your SD card, modify the script.sh and/or boot.sh files to specify the correct devices for mounting your system:

sudo mount /dev/sd<FAT> mnt/boot/
sudo mount /dev/sd<EXT4> mnt/root/

# Example:
# sudo mount /dev/sda1 mnt/boot/
# sudo mount /dev/sda2 mnt/root/

After changing the devices, you can use any of the methods below:

Method 1: Unzip and Boot

Simply run the boot.sh script.

Method 2: Rebuild from Scratch

This method provides more control over the versions you want to install.

Note: Merge conflicts for the versions used in the script (rpi-5.4.y and mptcp_trunk) are resolved automatically during the build process—I've already handled that headache for you 😅. However, if you change the versions, you may encounter different merge conflicts.

During the script execution, you'll be prompted to configure some MPTCP options. Accept all defaults:

MPTCP: advanced scheduler control (MPTCP_SCHED_ADVANCED) [Y/n/?] y
  MPTCP BLEST (MPTCP_BLEST) [Y/n/m/?] y
  MPTCP Round-Robin (MPTCP_ROUNDROBIN) [Y/n/m/?] y
  MPTCP Redundant (MPTCP_REDUNDANT) [Y/n/m/?] y
  MPTCP ECF (MPTCP_ECF) [N/m/y/?] (NEW) 

Now, just wait... Eventually, you'll see a message like this:

You are ready to go :)

At this point, you can remove the SD card, boot your Raspberry Pi 4B, and enjoy using MPTCP.

What you need to do in your Rapsberry 4B?

sudo apt update
sudo apt install bc bison flex libssl-dev make libc6-dev libncurses5-dev -y

cd /usr/src
sudo wget https://github.com/tiagojoseas/raspberry-mptcp/releases/download/v1.0/raspy4_mptcp_arm64-aarch64-linux-gnu-tar.gz
sudo tar -xvf raspy4_mptcp_arm64-aarch64-linux-gnu-tar.gz 
sudo ln -s -f /usr/src/linux/ /lib/modules/5.4.83-rpi_mptcp+/build 
cd /lib/modules/5.4.83-rpi_mptcp+/build 

make modules_prepare
make oldconfig && make prepare