#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# End-to-end ipvs test suite
# Topology:
#--------------------------------------------------------------+
# | |
# ns0 | ns1 |
# ----------- | ----------- ----------- |
# | veth01 | --------- | veth10 | | veth12 | |
# ----------- peer ----------- ----------- |
# | | | |
# ----------- | | |
# | br0 | |----------------- peer |--------------|
# ----------- | | |
# | | | |
# ---------- peer ---------- ----------- |
# | veth02 | --------- | veth20 | | veth21 | |
# ---------- | ---------- ----------- |
# | ns2 |
# | |
#--------------------------------------------------------------+
#
# We assume that all network driver are loaded
#
source lib.sh
ret=0
GREEN='\033[0;92m'
RED='\033[0;31m'
NC='\033[0m' # No Color
readonly port=8080
readonly vip_v4=207.175.44.110
readonly cip_v4=10.0.0.2
readonly gip_v4=10.0.0.1
readonly dip_v4=172.16.0.1
readonly rip_v4=172.16.0.2
readonly sip_v4=10.0.0.3
readonly infile="$(mktemp)"
readonly outfile="$(mktemp)"
readonly datalen=32
sysipvsnet="/proc/sys/net/ipv4/vs/"
if [ ! -d $sysipvsnet ]; then
if ! modprobe -q ip_vs; then
echo "skip: could not run test without ipvs module"
exit $ksft_skip
fi
fi
checktool "ipvsadm -v" "run test without ipvsadm"
checktool "socat -h" "run test without socat"
setup() {
setup_ns ns0 ns1 ns2
ip link add veth01 netns "${ns0}" type veth peer name veth10 netns "${ns1}"
ip link add veth02 netns "${ns0}" type veth peer name veth20 netns "${ns2}"
ip link add veth12 netns "${ns1}" type veth peer name veth21 netns "${ns2}"
ip netns exec "${ns0}" ip link set veth01 up
ip netns exec "${ns0}" ip link set veth02 up
ip netns exec "${ns0}" ip link add br0 type bridge
ip netns exec "${ns0}" ip link set veth01 master br0
ip netns exec "${ns0}" ip link set veth02 master br0
ip netns exec "${ns0}" ip link set br0 up
ip netns exec "${ns0}" ip addr add "${cip_v4}/24" dev br0
ip netns exec "${ns1}" ip link set veth10 up
ip netns exec "${ns1}" ip addr add "${gip_v4}/24" dev veth10
ip netns exec "${ns1}" ip link set veth12 up
ip netns exec "${ns1}" ip addr add "${dip_v4}/24" dev veth12
ip netns exec "${ns2}" ip link set veth21 up
ip netns exec "${ns2}" ip addr add "${rip_v4}/24" dev veth21
ip netns exec "${ns2}" ip link set veth20 up
ip netns exec "${ns2}" ip addr add "${sip_v4}/24" dev veth20
sleep 1
dd if=/dev/urandom of="${infile}" bs="${datalen}" count=1 status=none
}
cleanup() {
cleanup_all_ns
if [ -f "${outfile}" ]; then
rm "${outfile}"
fi
if [ -f "${infile}" ]; then
rm "${infile}"
fi
}
server_listen() {
ip netns exec "$ns2" timeout 5 socat -u -4 TCP-LISTEN:8080,reuseaddr STDOUT > "${outfile}" &
server_pid=$!
sleep 0.2
}
client_connect() {
ip netns exec "${ns0}" timeout 2 socat -u -4 STDIN TCP:"${vip_v4}":"${port}" < "${infile}"
}
verify_data() {
wait "${server_pid}"
cmp "$infile" "$outfile" 2>/dev/null
}
test_service() {
server_listen
client_connect
verify_data
}
test_dr() {
ip netns exec "${ns0}" ip route add "${vip_v4}" via "${gip_v4}" dev br0
ip netns exec "${ns1}" sysctl -qw net.ipv4.ip_forward=1
ip netns exec "${ns1}" ipvsadm -A -t "${vip_v4}:${port}" -s rr
ip netns exec "${ns1}" ipvsadm -a -t "${vip_v4}:${port}" -r "${rip_v4}:${port}"
ip netns exec "${ns1}" ip addr add "${vip_v4}/32" dev lo:1
# avoid incorrect arp response
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.all.arp_ignore=1
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.all.arp_announce=2
# avoid reverse route lookup
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.all.rp_filter=0
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.veth21.rp_filter=0
ip netns exec "${ns2}" ip addr add "${vip_v4}/32" dev lo:1
test_service
}
test_nat() {
ip netns exec "${ns0}" ip route add "${vip_v4}" via "${gip_v4}" dev br0
ip netns exec "${ns1}" sysctl -qw net.ipv4.ip_forward=1
ip netns exec "${ns1}" ipvsadm -A -t "${vip_v4}:${port}" -s rr
ip netns exec "${ns1}" ipvsadm -a -m -t "${vip_v4}:${port}" -r "${rip_v4}:${port}"
ip netns exec "${ns1}" ip addr add "${vip_v4}/32" dev lo:1
ip netns exec "${ns2}" ip link del veth20
ip netns exec "${ns2}" ip route add default via "${dip_v4}" dev veth21
test_service
}
test_tun() {
ip netns exec "${ns0}" ip route add "${vip_v4}" via "${gip_v4}" dev br0
ip netns exec "${ns1}" modprobe -q ipip
ip netns exec "${ns1}" ip link set tunl0 up
ip netns exec "${ns1}" sysctl -qw net.ipv4.ip_forward=0
ip netns exec "${ns1}" sysctl -qw net.ipv4.conf.all.send_redirects=0
ip netns exec "${ns1}" sysctl -qw net.ipv4.conf.default.send_redirects=0
ip netns exec "${ns1}" ipvsadm -A -t "${vip_v4}:${port}" -s rr
ip netns exec "${ns1}" ipvsadm -a -i -t "${vip_v4}:${port}" -r ${rip_v4}:${port}
ip netns exec "${ns1}" ip addr add ${vip_v4}/32 dev lo:1
ip netns exec "${ns2}" modprobe -q ipip
ip netns exec "${ns2}" ip link set tunl0 up
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.all.arp_ignore=1
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.all.arp_announce=2
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.all.rp_filter=0
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.tunl0.rp_filter=0
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.veth21.rp_filter=0
ip netns exec "${ns2}" ip addr add "${vip_v4}/32" dev lo:1
test_service
}
run_tests() {
local errors=
echo "Testing DR mode..."
cleanup
setup
test_dr
errors=$(( $errors + $? ))
echo "Testing NAT mode..."
cleanup
setup
test_nat
errors=$(( $errors + $? ))
echo "Testing Tunnel mode..."
cleanup
setup
test_tun
errors=$(( $errors + $? ))
return $errors
}
trap cleanup EXIT
run_tests
if [ $? -ne 0 ]; then
echo -e "$(basename $0): ${RED}FAIL${NC}"
exit 1
fi
echo -e "$(basename $0): ${GREEN}PASS${NC}"
exit 0
Codebase Browser
linux