• Requirements make gcc libssl-dev bc libcap-dev gcc-multilib libncurses5-dev pkg-config libmnl-dev graphviz bison clang flex libelf-dev llvm can be installed through apt-get install.
• Tested on linux-5.6

Setup environment

• cd linux_kernel_source_code
• make defconfig
• make headers_install
• cd samples/bpf
• Modify Makefile to include your programs
• make compiles all bpf programs

Commands which might come in handy

• Remove an xdp program attached to an interface sudo ip link set dev if_name xdp off
• ip netns add net1, ip netns add net2 to create 2 network namespaces
• ip link add veth1 netns net1 type veth peer name veth2 netns net2 create veth pair between the 2 netns
• ip netns exec net1 bash to open a shell inside net1
• ip addr add 192.168.1.1/24 dev veth1
• ip link set dev veth1 up