Update tc root build with kernel version 5.15 #162

	name: CI build for connection limit
	on:
	pull_request: {}
	push:
	branches:
	- main

	jobs:
	connection-limit-build-ubuntu:
	runs-on: ubuntu-latest
	container:
	image: ubuntu:bionic

	steps:
	- name: Set up build environment
	run: \|
	apt-get update
	apt-get install -y bc \
	bison \
	build-essential \
	clang \
	curl \
	exuberant-ctags \
	flex \
	gcc-8 \
	gcc-multilib \
	git \
	gnutls-bin \
	libc6-dev \
	libcurl4-openssl-dev \
	libelf-dev \
	libjson-c-dev \
	libncurses5-dev \
	libpcap-dev \
	libssl-dev \
	linux-headers-generic \
	linux-tools-common \
	linux-tools-generic \
	llvm \
	rsync

	- name: Set env variables
	run: \|
	echo "REPO=eBPF-Package-Repository" >> $GITHUB_ENV
	echo "PROG=connection-limit" >> $GITHUB_ENV
	echo "BPF_PATH=samples/bpf" >> $GITHUB_ENV
	echo "LINUX_SRC_PATH=$GITHUB_WORKSPACE/linux" >> $GITHUB_ENV

	- name: Clone dependencies
	run: \|
	git clone --branch v5.1 --depth 1 https://github.com/torvalds/linux.git $LINUX_SRC_PATH
	cd $LINUX_SRC_PATH
	make defconfig

	- name: Clone kernel function repository
	uses: actions/checkout@v2
	with:
	path: linux/${{ env.BPF_PATH }}/${{ env.REPO }}/

	- name: Build eBPF Programs
	run: \|
	cd $LINUX_SRC_PATH/$BPF_PATH/$REPO/$PROG
	make

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