#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Various combinations of VRF with xfrms and qdisc.
source lib.sh
PAUSE_ON_FAIL=no
VERBOSE=0
ret=0
HOST1_4=192.168.1.1
HOST2_4=192.168.1.2
HOST1_6=2001:db8:1::1
HOST2_6=2001:db8:1::2
XFRM1_4=10.0.1.1
XFRM2_4=10.0.1.2
XFRM1_6=fc00:1000::1
XFRM2_6=fc00:1000::2
IF_ID=123
VRF=red
TABLE=300
AUTH_1=0xd94fcfea65fddf21dc6e0d24a0253508
AUTH_2=0xdc6e0d24a0253508d94fcfea65fddf21
ENC_1=0xfc46c20f8048be9725930ff3fb07ac2a91f0347dffeacf62
ENC_2=0x3fb07ac2a91f0347dffeacf62fc46c20f8048be9725930ff
SPI_1=0x02122b77
SPI_2=0x2b770212
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
[ "$a" = "q" ] && exit 1
fi
fi
}
run_cmd_host1()
{
local cmd="$*"
local out
local rc
if [ "$VERBOSE" = "1" ]; then
printf " COMMAND: $cmd\n"
fi
out=$(eval ip netns exec $host1 $cmd 2>&1)
rc=$?
if [ "$VERBOSE" = "1" ]; then
if [ -n "$out" ]; then
echo
echo " $out"
fi
echo
fi
return $rc
}
################################################################################
# create namespaces for hosts and sws
create_vrf()
{
local ns=$1
local vrf=$2
local table=$3
if [ -n "${ns}" ]; then
ns="-netns ${ns}"
fi
ip ${ns} link add ${vrf} type vrf table ${table}
ip ${ns} link set ${vrf} up
ip ${ns} route add vrf ${vrf} unreachable default metric 8192
ip ${ns} -6 route add vrf ${vrf} unreachable default metric 8192
ip ${ns} addr add 127.0.0.1/8 dev ${vrf}
ip ${ns} -6 addr add ::1 dev ${vrf} nodad
ip ${ns} ru del pref 0
ip ${ns} ru add pref 32765 from all lookup local
ip ${ns} -6 ru del pref 0
ip ${ns} -6 ru add pref 32765 from all lookup local
}
create_ns()
{
local ns=$1
local addr=$2
local addr6=$3
[ -z "${addr}" ] && addr="-"
[ -z "${addr6}" ] && addr6="-"
if [ "${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=$8
local ns1arg
local ns2arg
if [ -n "${ns1}" ]; then
ns1arg="-netns ${ns1}"
fi
if [ -n "${ns2}" ]; then
ns2arg="-netns ${ns2}"
fi
ip ${ns1arg} li add ${ns1_dev} type veth peer name tmp
ip ${ns1arg} li set ${ns1_dev} up
ip ${ns1arg} li set tmp netns ${ns2} name ${ns2_dev}
ip ${ns2arg} li set ${ns2_dev} up
if [ "${ns1_addr}" != "-" ]; then
ip ${ns1arg} addr add dev ${ns1_dev} ${ns1_addr}
ip ${ns2arg} addr add dev ${ns2_dev} ${ns2_addr}
fi
if [ "${ns1_addr6}" != "-" ]; then
ip ${ns1arg} addr add dev ${ns1_dev} ${ns1_addr6} nodad
ip ${ns2arg} addr add dev ${ns2_dev} ${ns2_addr6} nodad
fi
}
################################################################################
cleanup()
{
cleanup_ns $host1 $host2
}
setup()
{
setup_ns host1 host2
create_ns "$host1"
create_ns "$host2"
connect_ns "$host1" eth0 ${HOST1_4}/24 ${HOST1_6}/64 \
"$host2" eth0 ${HOST2_4}/24 ${HOST2_6}/64
create_vrf "$host1" ${VRF} ${TABLE}
ip -netns $host1 link set dev eth0 master ${VRF}
}
cleanup_xfrm()
{
for ns in $host1 $host2
do
for x in state policy
do
ip -netns ${ns} xfrm ${x} flush
ip -6 -netns ${ns} xfrm ${x} flush
done
done
}
setup_xfrm()
{
local h1_4=$1
local h2_4=$2
local h1_6=$3
local h2_6=$4
local devarg="$5"
#
# policy
#
# host1 - IPv4 out
ip -netns $host1 xfrm policy add \
src ${h1_4} dst ${h2_4} ${devarg} dir out \
tmpl src ${HOST1_4} dst ${HOST2_4} proto esp mode tunnel
# host2 - IPv4 in
ip -netns $host2 xfrm policy add \
src ${h1_4} dst ${h2_4} dir in \
tmpl src ${HOST1_4} dst ${HOST2_4} proto esp mode tunnel
# host1 - IPv4 in
ip -netns $host1 xfrm policy add \
src ${h2_4} dst ${h1_4} ${devarg} dir in \
tmpl src ${HOST2_4} dst ${HOST1_4} proto esp mode tunnel
# host2 - IPv4 out
ip -netns $host2 xfrm policy add \
src ${h2_4} dst ${h1_4} dir out \
tmpl src ${HOST2_4} dst ${HOST1_4} proto esp mode tunnel
# host1 - IPv6 out
ip -6 -netns $host1 xfrm policy add \
src ${h1_6} dst ${h2_6} ${devarg} dir out \
tmpl src ${HOST1_6} dst ${HOST2_6} proto esp mode tunnel
# host2 - IPv6 in
ip -6 -netns $host2 xfrm policy add \
src ${h1_6} dst ${h2_6} dir in \
tmpl src ${HOST1_6} dst ${HOST2_6} proto esp mode tunnel
# host1 - IPv6 in
ip -6 -netns $host1 xfrm policy add \
src ${h2_6} dst ${h1_6} ${devarg} dir in \
tmpl src ${HOST2_6} dst ${HOST1_6} proto esp mode tunnel
# host2 - IPv6 out
ip -6 -netns $host2 xfrm policy add \
src ${h2_6} dst ${h1_6} dir out \
tmpl src ${HOST2_6} dst ${HOST1_6} proto esp mode tunnel
#
# state
#
ip -netns $host1 xfrm state add src ${HOST1_4} dst ${HOST2_4} \
proto esp spi ${SPI_1} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_1} 96 \
enc 'cbc(aes)' ${ENC_1} \
sel src ${h1_4} dst ${h2_4} ${devarg}
ip -netns $host2 xfrm state add src ${HOST1_4} dst ${HOST2_4} \
proto esp spi ${SPI_1} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_1} 96 \
enc 'cbc(aes)' ${ENC_1} \
sel src ${h1_4} dst ${h2_4}
ip -netns $host1 xfrm state add src ${HOST2_4} dst ${HOST1_4} \
proto esp spi ${SPI_2} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_2} 96 \
enc 'cbc(aes)' ${ENC_2} \
sel src ${h2_4} dst ${h1_4} ${devarg}
ip -netns $host2 xfrm state add src ${HOST2_4} dst ${HOST1_4} \
proto esp spi ${SPI_2} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_2} 96 \
enc 'cbc(aes)' ${ENC_2} \
sel src ${h2_4} dst ${h1_4}
ip -6 -netns $host1 xfrm state add src ${HOST1_6} dst ${HOST2_6} \
proto esp spi ${SPI_1} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_1} 96 \
enc 'cbc(aes)' ${ENC_1} \
sel src ${h1_6} dst ${h2_6} ${devarg}
ip -6 -netns $host2 xfrm state add src ${HOST1_6} dst ${HOST2_6} \
proto esp spi ${SPI_1} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_1} 96 \
enc 'cbc(aes)' ${ENC_1} \
sel src ${h1_6} dst ${h2_6}
ip -6 -netns $host1 xfrm state add src ${HOST2_6} dst ${HOST1_6} \
proto esp spi ${SPI_2} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_2} 96 \
enc 'cbc(aes)' ${ENC_2} \
sel src ${h2_6} dst ${h1_6} ${devarg}
ip -6 -netns $host2 xfrm state add src ${HOST2_6} dst ${HOST1_6} \
proto esp spi ${SPI_2} reqid 0 mode tunnel \
replay-window 4 replay-oseq 0x4 \
auth-trunc 'hmac(sha1)' ${AUTH_2} 96 \
enc 'cbc(aes)' ${ENC_2} \
sel src ${h2_6} dst ${h1_6}
}
cleanup_xfrm_dev()
{
ip -netns $host1 li del xfrm0
ip -netns $host2 addr del ${XFRM2_4}/24 dev eth0
ip -netns $host2 addr del ${XFRM2_6}/64 dev eth0
}
setup_xfrm_dev()
{
local vrfarg="vrf ${VRF}"
ip -netns $host1 li add type xfrm dev eth0 if_id ${IF_ID}
ip -netns $host1 li set xfrm0 ${vrfarg} up
ip -netns $host1 addr add ${XFRM1_4}/24 dev xfrm0
ip -netns $host1 addr add ${XFRM1_6}/64 dev xfrm0
ip -netns $host2 addr add ${XFRM2_4}/24 dev eth0
ip -netns $host2 addr add ${XFRM2_6}/64 dev eth0
setup_xfrm ${XFRM1_4} ${XFRM2_4} ${XFRM1_6} ${XFRM2_6} "if_id ${IF_ID}"
}
run_tests()
{
cleanup_xfrm
# no IPsec
run_cmd_host1 ip vrf exec ${VRF} ping -c1 -w1 ${HOST2_4}
log_test $? 0 "IPv4 no xfrm policy"
run_cmd_host1 ip vrf exec ${VRF} ${ping6} -c1 -w1 ${HOST2_6}
log_test $? 0 "IPv6 no xfrm policy"
# xfrm without VRF in sel
setup_xfrm ${HOST1_4} ${HOST2_4} ${HOST1_6} ${HOST2_6}
run_cmd_host1 ip vrf exec ${VRF} ping -c1 -w1 ${HOST2_4}
log_test $? 0 "IPv4 xfrm policy based on address"
run_cmd_host1 ip vrf exec ${VRF} ${ping6} -c1 -w1 ${HOST2_6}
log_test $? 0 "IPv6 xfrm policy based on address"
cleanup_xfrm
# xfrm with VRF in sel
# Known failure: ipv4 resets the flow oif after the lookup. Fix is
# not straightforward.
# setup_xfrm ${HOST1_4} ${HOST2_4} ${HOST1_6} ${HOST2_6} "dev ${VRF}"
# run_cmd_host1 ip vrf exec ${VRF} ping -c1 -w1 ${HOST2_4}
# log_test $? 0 "IPv4 xfrm policy with VRF in selector"
run_cmd_host1 ip vrf exec ${VRF} ${ping6} -c1 -w1 ${HOST2_6}
log_test $? 0 "IPv6 xfrm policy with VRF in selector"
cleanup_xfrm
# xfrm with enslaved device in sel
# Known failures: combined with the above, __xfrm{4,6}_selector_match
# needs to consider both l3mdev and enslaved device index.
# setup_xfrm ${HOST1_4} ${HOST2_4} ${HOST1_6} ${HOST2_6} "dev eth0"
# run_cmd_host1 ip vrf exec ${VRF} ping -c1 -w1 ${HOST2_4}
# log_test $? 0 "IPv4 xfrm policy with enslaved device in selector"
# run_cmd_host1 ip vrf exec ${VRF} ${ping6} -c1 -w1 ${HOST2_6}
# log_test $? 0 "IPv6 xfrm policy with enslaved device in selector"
# cleanup_xfrm
# xfrm device
setup_xfrm_dev
run_cmd_host1 ip vrf exec ${VRF} ping -c1 -w1 ${XFRM2_4}
log_test $? 0 "IPv4 xfrm policy with xfrm device"
run_cmd_host1 ip vrf exec ${VRF} ${ping6} -c1 -w1 ${XFRM2_6}
log_test $? 0 "IPv6 xfrm policy with xfrm device"
cleanup_xfrm_dev
}
################################################################################
# usage
usage()
{
cat <<EOF
usage: ${0##*/} OPTS
-p Pause on fail
-v verbose mode (show commands and output)
done
EOF
}
################################################################################
# main
while getopts :pv o
do
case $o in
p) PAUSE_ON_FAIL=yes;;
v) VERBOSE=$(($VERBOSE + 1));;
h) usage; exit 0;;
*) usage; exit 1;;
esac
done
cleanup 2>/dev/null
setup
echo
echo "No qdisc on VRF device"
run_tests
run_cmd_host1 tc qdisc add dev ${VRF} root netem delay 100ms
echo
echo "netem qdisc on VRF device"
run_tests
printf "\nTests passed: %3d\n" ${nsuccess}
printf "Tests failed: %3d\n" ${nfail}
exit $ret
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