| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # L2TPv3 tunnel between 2 hosts |
| # |
| # host-1 | router | host-2 |
| # | | |
| # lo l2tp | | l2tp lo |
| # 172.16.101.1 172.16.1.1 | | 172.16.1.2 172.16.101.2 |
| # fc00:101::1 fc00:1::1 | | fc00:1::2 fc00:101::2 |
| # | | |
| # eth0 | | eth0 |
| # 10.1.1.1 | | 10.1.2.1 |
| # 2001:db8:1::1 | | 2001:db8:2::1 |
| |
| VERBOSE=0 |
| PAUSE_ON_FAIL=no |
| |
| which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping) |
| |
| ################################################################################ |
| # |
| log_test() |
| { |
| local rc=$1 |
| local expected=$2 |
| local msg="$3" |
| |
| if [ ${rc} -eq ${expected} ]; then |
| printf "TEST: %-60s [ OK ]\n" "${msg}" |
| nsuccess=$((nsuccess+1)) |
| else |
| ret=1 |
| nfail=$((nfail+1)) |
| printf "TEST: %-60s [FAIL]\n" "${msg}" |
| if [ "${PAUSE_ON_FAIL}" = "yes" ]; then |
| echo |
| echo "hit enter to continue, 'q' to quit" |
| read a |
| [ "$a" = "q" ] && exit 1 |
| fi |
| fi |
| } |
| |
| run_cmd() |
| { |
| local ns |
| local cmd |
| local out |
| local rc |
| |
| ns="$1" |
| shift |
| cmd="$*" |
| |
| if [ "$VERBOSE" = "1" ]; then |
| printf " COMMAND: $cmd\n" |
| fi |
| |
| out=$(eval ip netns exec ${ns} ${cmd} 2>&1) |
| rc=$? |
| if [ "$VERBOSE" = "1" -a -n "$out" ]; then |
| echo " $out" |
| fi |
| |
| [ "$VERBOSE" = "1" ] && echo |
| |
| return $rc |
| } |
| |
| ################################################################################ |
| # create namespaces and interconnects |
| |
| create_ns() |
| { |
| local ns=$1 |
| local addr=$2 |
| local addr6=$3 |
| |
| [ -z "${addr}" ] && addr="-" |
| [ -z "${addr6}" ] && addr6="-" |
| |
| ip netns add ${ns} |
| |
| ip -netns ${ns} link set lo up |
| if [ "${addr}" != "-" ]; then |
| ip -netns ${ns} addr add dev lo ${addr} |
| fi |
| if [ "${addr6}" != "-" ]; then |
| ip -netns ${ns} -6 addr add dev lo ${addr6} |
| fi |
| |
| ip -netns ${ns} ro add unreachable default metric 8192 |
| ip -netns ${ns} -6 ro add unreachable default metric 8192 |
| |
| ip netns exec ${ns} sysctl -qw net.ipv4.ip_forward=1 |
| ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1 |
| ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.forwarding=1 |
| ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.forwarding=1 |
| ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.accept_dad=0 |
| } |
| |
| # create veth pair to connect namespaces and apply addresses. |
| connect_ns() |
| { |
| local ns1=$1 |
| local ns1_dev=$2 |
| local ns1_addr=$3 |
| local ns1_addr6=$4 |
| local ns2=$5 |
| local ns2_dev=$6 |
| local ns2_addr=$7 |
| local ns2_addr6=$8 |
| |
| ip -netns ${ns1} li add ${ns1_dev} type veth peer name tmp |
| ip -netns ${ns1} li set ${ns1_dev} up |
| ip -netns ${ns1} li set tmp netns ${ns2} name ${ns2_dev} |
| ip -netns ${ns2} li set ${ns2_dev} up |
| |
| if [ "${ns1_addr}" != "-" ]; then |
| ip -netns ${ns1} addr add dev ${ns1_dev} ${ns1_addr} |
| ip -netns ${ns2} addr add dev ${ns2_dev} ${ns2_addr} |
| fi |
| |
| if [ "${ns1_addr6}" != "-" ]; then |
| ip -netns ${ns1} addr add dev ${ns1_dev} ${ns1_addr6} |
| ip -netns ${ns2} addr add dev ${ns2_dev} ${ns2_addr6} |
| fi |
| } |
| |
| ################################################################################ |
| # test setup |
| |
| cleanup() |
| { |
| local ns |
| |
| for ns in host-1 host-2 router |
| do |
| ip netns del ${ns} 2>/dev/null |
| done |
| } |
| |
| setup_l2tp_ipv4() |
| { |
| # |
| # configure l2tpv3 tunnel on host-1 |
| # |
| ip -netns host-1 l2tp add tunnel tunnel_id 1041 peer_tunnel_id 1042 \ |
| encap ip local 10.1.1.1 remote 10.1.2.1 |
| ip -netns host-1 l2tp add session name l2tp4 tunnel_id 1041 \ |
| session_id 1041 peer_session_id 1042 |
| ip -netns host-1 link set dev l2tp4 up |
| ip -netns host-1 addr add dev l2tp4 172.16.1.1 peer 172.16.1.2 |
| |
| # |
| # configure l2tpv3 tunnel on host-2 |
| # |
| ip -netns host-2 l2tp add tunnel tunnel_id 1042 peer_tunnel_id 1041 \ |
| encap ip local 10.1.2.1 remote 10.1.1.1 |
| ip -netns host-2 l2tp add session name l2tp4 tunnel_id 1042 \ |
| session_id 1042 peer_session_id 1041 |
| ip -netns host-2 link set dev l2tp4 up |
| ip -netns host-2 addr add dev l2tp4 172.16.1.2 peer 172.16.1.1 |
| |
| # |
| # add routes to loopback addresses |
| # |
| ip -netns host-1 ro add 172.16.101.2/32 via 172.16.1.2 |
| ip -netns host-2 ro add 172.16.101.1/32 via 172.16.1.1 |
| } |
| |
| setup_l2tp_ipv6() |
| { |
| # |
| # configure l2tpv3 tunnel on host-1 |
| # |
| ip -netns host-1 l2tp add tunnel tunnel_id 1061 peer_tunnel_id 1062 \ |
| encap ip local 2001:db8:1::1 remote 2001:db8:2::1 |
| ip -netns host-1 l2tp add session name l2tp6 tunnel_id 1061 \ |
| session_id 1061 peer_session_id 1062 |
| ip -netns host-1 link set dev l2tp6 up |
| ip -netns host-1 addr add dev l2tp6 fc00:1::1 peer fc00:1::2 |
| |
| # |
| # configure l2tpv3 tunnel on host-2 |
| # |
| ip -netns host-2 l2tp add tunnel tunnel_id 1062 peer_tunnel_id 1061 \ |
| encap ip local 2001:db8:2::1 remote 2001:db8:1::1 |
| ip -netns host-2 l2tp add session name l2tp6 tunnel_id 1062 \ |
| session_id 1062 peer_session_id 1061 |
| ip -netns host-2 link set dev l2tp6 up |
| ip -netns host-2 addr add dev l2tp6 fc00:1::2 peer fc00:1::1 |
| |
| # |
| # add routes to loopback addresses |
| # |
| ip -netns host-1 -6 ro add fc00:101::2/128 via fc00:1::2 |
| ip -netns host-2 -6 ro add fc00:101::1/128 via fc00:1::1 |
| } |
| |
| setup() |
| { |
| # start clean |
| cleanup |
| |
| set -e |
| create_ns host-1 172.16.101.1/32 fc00:101::1/128 |
| create_ns host-2 172.16.101.2/32 fc00:101::2/128 |
| create_ns router |
| |
| connect_ns host-1 eth0 10.1.1.1/24 2001:db8:1::1/64 \ |
| router eth1 10.1.1.2/24 2001:db8:1::2/64 |
| |
| connect_ns host-2 eth0 10.1.2.1/24 2001:db8:2::1/64 \ |
| router eth2 10.1.2.2/24 2001:db8:2::2/64 |
| |
| ip -netns host-1 ro add 10.1.2.0/24 via 10.1.1.2 |
| ip -netns host-1 -6 ro add 2001:db8:2::/64 via 2001:db8:1::2 |
| |
| ip -netns host-2 ro add 10.1.1.0/24 via 10.1.2.2 |
| ip -netns host-2 -6 ro add 2001:db8:1::/64 via 2001:db8:2::2 |
| |
| setup_l2tp_ipv4 |
| setup_l2tp_ipv6 |
| set +e |
| } |
| |
| setup_ipsec() |
| { |
| # |
| # IPv4 |
| # |
| run_cmd host-1 ip xfrm policy add \ |
| src 10.1.1.1 dst 10.1.2.1 dir out \ |
| tmpl proto esp mode transport |
| |
| run_cmd host-1 ip xfrm policy add \ |
| src 10.1.2.1 dst 10.1.1.1 dir in \ |
| tmpl proto esp mode transport |
| |
| run_cmd host-2 ip xfrm policy add \ |
| src 10.1.1.1 dst 10.1.2.1 dir in \ |
| tmpl proto esp mode transport |
| |
| run_cmd host-2 ip xfrm policy add \ |
| src 10.1.2.1 dst 10.1.1.1 dir out \ |
| tmpl proto esp mode transport |
| |
| ip -netns host-1 xfrm state add \ |
| src 10.1.1.1 dst 10.1.2.1 \ |
| spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| |
| ip -netns host-1 xfrm state add \ |
| src 10.1.2.1 dst 10.1.1.1 \ |
| spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| |
| ip -netns host-2 xfrm state add \ |
| src 10.1.1.1 dst 10.1.2.1 \ |
| spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| |
| ip -netns host-2 xfrm state add \ |
| src 10.1.2.1 dst 10.1.1.1 \ |
| spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| |
| # |
| # IPV6 |
| # |
| run_cmd host-1 ip -6 xfrm policy add \ |
| src 2001:db8:1::1 dst 2001:db8:2::1 dir out \ |
| tmpl proto esp mode transport |
| |
| run_cmd host-1 ip -6 xfrm policy add \ |
| src 2001:db8:2::1 dst 2001:db8:1::1 dir in \ |
| tmpl proto esp mode transport |
| |
| run_cmd host-2 ip -6 xfrm policy add \ |
| src 2001:db8:1::1 dst 2001:db8:2::1 dir in \ |
| tmpl proto esp mode transport |
| |
| run_cmd host-2 ip -6 xfrm policy add \ |
| src 2001:db8:2::1 dst 2001:db8:1::1 dir out \ |
| tmpl proto esp mode transport |
| |
| ip -netns host-1 -6 xfrm state add \ |
| src 2001:db8:1::1 dst 2001:db8:2::1 \ |
| spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| |
| ip -netns host-1 -6 xfrm state add \ |
| src 2001:db8:2::1 dst 2001:db8:1::1 \ |
| spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| |
| ip -netns host-2 -6 xfrm state add \ |
| src 2001:db8:1::1 dst 2001:db8:2::1 \ |
| spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| |
| ip -netns host-2 -6 xfrm state add \ |
| src 2001:db8:2::1 dst 2001:db8:1::1 \ |
| spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' \ |
| 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode transport |
| } |
| |
| teardown_ipsec() |
| { |
| run_cmd host-1 ip xfrm state flush |
| run_cmd host-1 ip xfrm policy flush |
| run_cmd host-2 ip xfrm state flush |
| run_cmd host-2 ip xfrm policy flush |
| } |
| |
| ################################################################################ |
| # generate traffic through tunnel for various cases |
| |
| run_ping() |
| { |
| local desc="$1" |
| |
| run_cmd host-1 ping -c1 -w1 172.16.1.2 |
| log_test $? 0 "IPv4 basic L2TP tunnel ${desc}" |
| |
| run_cmd host-1 ping -c1 -w1 -I 172.16.101.1 172.16.101.2 |
| log_test $? 0 "IPv4 route through L2TP tunnel ${desc}" |
| |
| run_cmd host-1 ${ping6} -c1 -w1 fc00:1::2 |
| log_test $? 0 "IPv6 basic L2TP tunnel ${desc}" |
| |
| run_cmd host-1 ${ping6} -c1 -w1 -I fc00:101::1 fc00:101::2 |
| log_test $? 0 "IPv6 route through L2TP tunnel ${desc}" |
| } |
| |
| run_tests() |
| { |
| local desc |
| |
| setup |
| run_ping |
| |
| setup_ipsec |
| run_ping "- with IPsec" |
| run_cmd host-1 ping -c1 -w1 172.16.1.2 |
| log_test $? 0 "IPv4 basic L2TP tunnel ${desc}" |
| |
| run_cmd host-1 ping -c1 -w1 -I 172.16.101.1 172.16.101.2 |
| log_test $? 0 "IPv4 route through L2TP tunnel ${desc}" |
| |
| run_cmd host-1 ${ping6} -c1 -w1 fc00:1::2 |
| log_test $? 0 "IPv6 basic L2TP tunnel - with IPsec" |
| |
| run_cmd host-1 ${ping6} -c1 -w1 -I fc00:101::1 fc00:101::2 |
| log_test $? 0 "IPv6 route through L2TP tunnel - with IPsec" |
| |
| teardown_ipsec |
| run_ping "- after IPsec teardown" |
| } |
| |
| ################################################################################ |
| # main |
| |
| declare -i nfail=0 |
| declare -i nsuccess=0 |
| |
| while getopts :pv o |
| do |
| case $o in |
| p) PAUSE_ON_FAIL=yes;; |
| v) VERBOSE=$(($VERBOSE + 1));; |
| *) exit 1;; |
| esac |
| done |
| |
| run_tests |
| cleanup |
| |
| printf "\nTests passed: %3d\n" ${nsuccess} |
| printf "Tests failed: %3d\n" ${nfail} |
