#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# OVS kernel module self tests
trap ovs_exit_sig EXIT TERM INT ERR
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
PAUSE_ON_FAIL=no
VERBOSE=0
TRACING=0
WAIT_TIMEOUT=5
if test "X$KSFT_MACHINE_SLOW" == "Xyes"; then
WAIT_TIMEOUT=10
fi
tests="
arp_ping eth-arp: Basic arp ping between two NS
ct_connect_v4 ip4-ct-xon: Basic ipv4 tcp connection using ct
connect_v4 ip4-xon: Basic ipv4 ping between two NS
nat_connect_v4 ip4-nat-xon: Basic ipv4 tcp connection via NAT
nat_related_v4 ip4-nat-related: ICMP related matches work with SNAT
netlink_checks ovsnl: validate netlink attrs and settings
upcall_interfaces ovs: test the upcall interfaces
drop_reason drop: test drop reasons are emitted
psample psample: Sampling packets with psample"
info() {
[ "${ovs_dir}" != "" ] &&
echo "`date +"[%m-%d %H:%M:%S]"` $*" >> ${ovs_dir}/debug.log
[ $VERBOSE = 0 ] || echo $*
}
ovs_wait() {
info "waiting $WAIT_TIMEOUT s for: $@"
if "$@" ; then
info "wait succeeded immediately"
return 0
fi
# A quick re-check helps speed up small races in fast systems.
# However, fractional sleeps might not necessarily work.
local start=0
sleep 0.1 || { sleep 1; start=1; }
for (( i=start; i<WAIT_TIMEOUT; i++ )); do
if "$@" ; then
info "wait succeeded after $i seconds"
return 0
fi
sleep 1
done
info "wait failed after $i seconds"
return 1
}
ovs_base=`pwd`
sbxs=
sbx_add () {
info "adding sandbox '$1'"
sbxs="$sbxs $1"
NO_BIN=0
# Create sandbox.
local d="$ovs_base"/$1
if [ -e $d ]; then
info "removing $d"
rm -rf "$d"
fi
mkdir "$d" || return 1
ovs_setenv $1
}
ovs_exit_sig() {
[ -e ${ovs_dir}/cleanup ] && . "$ovs_dir/cleanup"
}
on_exit() {
echo "$1" > ${ovs_dir}/cleanup.tmp
cat ${ovs_dir}/cleanup >> ${ovs_dir}/cleanup.tmp
mv ${ovs_dir}/cleanup.tmp ${ovs_dir}/cleanup
}
ovs_setenv() {
sandbox=$1
ovs_dir=$ovs_base${1:+/$1}; export ovs_dir
test -e ${ovs_dir}/cleanup || : > ${ovs_dir}/cleanup
}
ovs_sbx() {
if test "X$2" != X; then
(ovs_setenv $1; shift;
info "run cmd: $@"; "$@" >> ${ovs_dir}/debug.log)
else
ovs_setenv $1
fi
}
ovs_add_dp () {
info "Adding DP/Bridge IF: sbx:$1 dp:$2 {$3, $4, $5}"
sbxname="$1"
shift
ovs_sbx "$sbxname" python3 $ovs_base/ovs-dpctl.py add-dp $*
on_exit "ovs_sbx $sbxname python3 $ovs_base/ovs-dpctl.py del-dp $1;"
}
ovs_add_if () {
info "Adding IF to DP: br:$2 if:$3"
if [ "$4" != "-u" ]; then
ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py add-if "$2" "$3" \
|| return 1
else
python3 $ovs_base/ovs-dpctl.py add-if \
-u "$2" "$3" >$ovs_dir/$3.out 2>$ovs_dir/$3.err &
pid=$!
on_exit "ovs_sbx $1 kill -TERM $pid 2>/dev/null"
fi
}
ovs_del_if () {
info "Deleting IF from DP: br:$2 if:$3"
ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py del-if "$2" "$3" || return 1
}
ovs_netns_spawn_daemon() {
sbx=$1
shift
netns=$1
shift
if [ "$netns" == "_default" ]; then
$* >> $ovs_dir/stdout 2>> $ovs_dir/stderr &
else
ip netns exec $netns $* >> $ovs_dir/stdout 2>> $ovs_dir/stderr &
fi
pid=$!
ovs_sbx "$sbx" on_exit "kill -TERM $pid 2>/dev/null"
}
ovs_spawn_daemon() {
sbx=$1
shift
ovs_netns_spawn_daemon $sbx "_default" $*
}
ovs_add_netns_and_veths () {
info "Adding netns attached: sbx:$1 dp:$2 {$3, $4, $5}"
ovs_sbx "$1" ip netns add "$3" || return 1
on_exit "ovs_sbx $1 ip netns del $3"
ovs_sbx "$1" ip link add "$4" type veth peer name "$5" || return 1
on_exit "ovs_sbx $1 ip link del $4 >/dev/null 2>&1"
ovs_sbx "$1" ip link set "$4" up || return 1
ovs_sbx "$1" ip link set "$5" netns "$3" || return 1
ovs_sbx "$1" ip netns exec "$3" ip link set "$5" up || return 1
if [ "$6" != "" ]; then
ovs_sbx "$1" ip netns exec "$3" ip addr add "$6" dev "$5" \
|| return 1
fi
if [ "$7" != "-u" ]; then
ovs_add_if "$1" "$2" "$4" || return 1
else
ovs_add_if "$1" "$2" "$4" -u || return 1
fi
[ $TRACING -eq 1 ] && ovs_netns_spawn_daemon "$1" "$ns" \
tcpdump -i any -s 65535
return 0
}
ovs_add_flow () {
info "Adding flow to DP: sbx:$1 br:$2 flow:$3 act:$4"
ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py add-flow "$2" "$3" "$4"
if [ $? -ne 0 ]; then
info "Flow [ $3 : $4 ] failed"
return 1
fi
return 0
}
ovs_del_flows () {
info "Deleting all flows from DP: sbx:$1 br:$2"
ovs_sbx "$1" python3 $ovs_base/ovs-dpctl.py del-flows "$2"
return 0
}
ovs_drop_record_and_run () {
local sbx=$1
shift
perf record -a -q -e skb:kfree_skb -o ${ovs_dir}/perf.data $* \
>> ${ovs_dir}/stdout 2>> ${ovs_dir}/stderr
return $?
}
ovs_drop_reason_count()
{
local reason=$1
local perf_output=`perf script -i ${ovs_dir}/perf.data -F trace:event,trace`
local pattern="skb:kfree_skb:.*reason: $reason"
return `echo "$perf_output" | grep "$pattern" | wc -l`
}
ovs_test_flow_fails () {
ERR_MSG="Flow actions may not be safe on all matching packets"
PRE_TEST=$(dmesg | grep -c "${ERR_MSG}")
ovs_add_flow $@ &> /dev/null $@ && return 1
POST_TEST=$(dmesg | grep -c "${ERR_MSG}")
if [ "$PRE_TEST" == "$POST_TEST" ]; then
return 1
fi
return 0
}
usage() {
echo
echo "$0 [OPTIONS] [TEST]..."
echo "If no TEST argument is given, all tests will be run."
echo
echo "Options"
echo " -t: capture traffic via tcpdump"
echo " -v: verbose"
echo " -p: pause on failure"
echo
echo "Available tests${tests}"
exit 1
}
# psample test
# - use psample to observe packets
test_psample() {
sbx_add "test_psample" || return $?
# Add a datapath with per-vport dispatching.
ovs_add_dp "test_psample" psample -V 2:1 || return 1
info "create namespaces"
ovs_add_netns_and_veths "test_psample" "psample" \
client c0 c1 172.31.110.10/24 -u || return 1
ovs_add_netns_and_veths "test_psample" "psample" \
server s0 s1 172.31.110.20/24 -u || return 1
# Check if psample actions can be configured.
ovs_add_flow "test_psample" psample \
'in_port(1),eth(),eth_type(0x0806),arp()' 'psample(group=1)' &> /dev/null
if [ $? == 1 ]; then
info "no support for psample - skipping"
ovs_exit_sig
return $ksft_skip
fi
ovs_del_flows "test_psample" psample
# Test action verification.
OLDIFS=$IFS
IFS='*'
min_key='in_port(1),eth(),eth_type(0x0800),ipv4()'
for testcase in \
"cookie to large"*"psample(group=1,cookie=1615141312111009080706050403020100)" \
"no group with cookie"*"psample(cookie=abcd)" \
"no group"*"psample()";
do
set -- $testcase;
ovs_test_flow_fails "test_psample" psample $min_key $2
if [ $? == 1 ]; then
info "failed - $1"
return 1
fi
done
IFS=$OLDIFS
ovs_del_flows "test_psample" psample
# Allow ARP
ovs_add_flow "test_psample" psample \
'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
ovs_add_flow "test_psample" psample \
'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
# Sample first 14 bytes of all traffic.
ovs_add_flow "test_psample" psample \
"in_port(1),eth(),eth_type(0x0800),ipv4()" \
"trunc(14),psample(group=1,cookie=c0ffee),2"
# Sample all traffic. In this case, use a sample() action with both
# psample and an upcall emulating simultaneous local sampling and
# sFlow / IPFIX.
nlpid=$(grep -E "listening on upcall packet handler" \
$ovs_dir/s0.out | cut -d ":" -f 2 | tr -d ' ')
ovs_add_flow "test_psample" psample \
"in_port(2),eth(),eth_type(0x0800),ipv4()" \
"sample(sample=100%,actions(psample(group=2,cookie=eeff0c),userspace(pid=${nlpid},userdata=eeff0c))),1"
# Record psample data.
ovs_spawn_daemon "test_psample" python3 $ovs_base/ovs-dpctl.py psample-events
ovs_wait grep -q "listening for psample events" ${ovs_dir}/stdout
# Send a single ping.
ovs_sbx "test_psample" ip netns exec client ping -I c1 172.31.110.20 -c 1 || return 1
# We should have received one userspace action upcall and 2 psample packets.
ovs_wait grep -q "userspace action command" $ovs_dir/s0.out || return 1
# client -> server samples should only contain the first 14 bytes of the packet.
ovs_wait grep -qE "rate:4294967295,group:1,cookie:c0ffee data:[0-9a-f]{28}$" \
$ovs_dir/stdout || return 1
ovs_wait grep -q "rate:4294967295,group:2,cookie:eeff0c" $ovs_dir/stdout || return 1
return 0
}
# drop_reason test
# - drop packets and verify the right drop reason is reported
test_drop_reason() {
which perf >/dev/null 2>&1 || return $ksft_skip
sbx_add "test_drop_reason" || return $?
ovs_add_dp "test_drop_reason" dropreason || return 1
info "create namespaces"
for ns in client server; do
ovs_add_netns_and_veths "test_drop_reason" "dropreason" "$ns" \
"${ns:0:1}0" "${ns:0:1}1" || return 1
done
# Setup client namespace
ip netns exec client ip addr add 172.31.110.10/24 dev c1
ip netns exec client ip link set c1 up
# Setup server namespace
ip netns exec server ip addr add 172.31.110.20/24 dev s1
ip netns exec server ip link set s1 up
# Check if drop reasons can be sent
ovs_add_flow "test_drop_reason" dropreason \
'in_port(1),eth(),eth_type(0x0806),arp()' 'drop(10)' 2>/dev/null
if [ $? == 1 ]; then
info "no support for drop reasons - skipping"
ovs_exit_sig
return $ksft_skip
fi
ovs_del_flows "test_drop_reason" dropreason
# Allow ARP
ovs_add_flow "test_drop_reason" dropreason \
'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
ovs_add_flow "test_drop_reason" dropreason \
'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
# Allow client ICMP traffic but drop return path
ovs_add_flow "test_drop_reason" dropreason \
"in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10,proto=1),icmp()" '2'
ovs_add_flow "test_drop_reason" dropreason \
"in_port(2),eth(),eth_type(0x0800),ipv4(src=172.31.110.20,proto=1),icmp()" 'drop'
ovs_drop_record_and_run "test_drop_reason" ip netns exec client ping -c 2 172.31.110.20
ovs_drop_reason_count 0x30001 # OVS_DROP_FLOW_ACTION
if [[ "$?" -ne "2" ]]; then
info "Did not detect expected drops: $?"
return 1
fi
# Drop UDP 6000 traffic with an explicit action and an error code.
ovs_add_flow "test_drop_reason" dropreason \
"in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10,proto=17),udp(dst=6000)" \
'drop(42)'
# Drop UDP 7000 traffic with an explicit action with no error code.
ovs_add_flow "test_drop_reason" dropreason \
"in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10,proto=17),udp(dst=7000)" \
'drop(0)'
ovs_drop_record_and_run \
"test_drop_reason" ip netns exec client nc -i 1 -zuv 172.31.110.20 6000
ovs_drop_reason_count 0x30004 # OVS_DROP_EXPLICIT_ACTION_ERROR
if [[ "$?" -ne "1" ]]; then
info "Did not detect expected explicit error drops: $?"
return 1
fi
ovs_drop_record_and_run \
"test_drop_reason" ip netns exec client nc -i 1 -zuv 172.31.110.20 7000
ovs_drop_reason_count 0x30003 # OVS_DROP_EXPLICIT_ACTION
if [[ "$?" -ne "1" ]]; then
info "Did not detect expected explicit drops: $?"
return 1
fi
return 0
}
# arp_ping test
# - client has 1500 byte MTU
# - server has 1500 byte MTU
# - send ARP ping between two ns
test_arp_ping () {
which arping >/dev/null 2>&1 || return $ksft_skip
sbx_add "test_arp_ping" || return $?
ovs_add_dp "test_arp_ping" arpping || return 1
info "create namespaces"
for ns in client server; do
ovs_add_netns_and_veths "test_arp_ping" "arpping" "$ns" \
"${ns:0:1}0" "${ns:0:1}1" || return 1
done
# Setup client namespace
ip netns exec client ip addr add 172.31.110.10/24 dev c1
ip netns exec client ip link set c1 up
HW_CLIENT=`ip netns exec client ip link show dev c1 | grep -E 'link/ether [0-9a-f:]+' | awk '{print $2;}'`
info "Client hwaddr: $HW_CLIENT"
# Setup server namespace
ip netns exec server ip addr add 172.31.110.20/24 dev s1
ip netns exec server ip link set s1 up
HW_SERVER=`ip netns exec server ip link show dev s1 | grep -E 'link/ether [0-9a-f:]+' | awk '{print $2;}'`
info "Server hwaddr: $HW_SERVER"
ovs_add_flow "test_arp_ping" arpping \
"in_port(1),eth(),eth_type(0x0806),arp(sip=172.31.110.10,tip=172.31.110.20,sha=$HW_CLIENT,tha=ff:ff:ff:ff:ff:ff)" '2' || return 1
ovs_add_flow "test_arp_ping" arpping \
"in_port(2),eth(),eth_type(0x0806),arp()" '1' || return 1
ovs_sbx "test_arp_ping" ip netns exec client arping -I c1 172.31.110.20 -c 1 || return 1
return 0
}
# ct_connect_v4 test
# - client has 1500 byte MTU
# - server has 1500 byte MTU
# - use ICMP to ping in each direction
# - only allow CT state stuff to pass through new in c -> s
test_ct_connect_v4 () {
which nc >/dev/null 2>/dev/null || return $ksft_skip
sbx_add "test_ct_connect_v4" || return $?
ovs_add_dp "test_ct_connect_v4" ct4 || return 1
info "create namespaces"
for ns in client server; do
ovs_add_netns_and_veths "test_ct_connect_v4" "ct4" "$ns" \
"${ns:0:1}0" "${ns:0:1}1" || return 1
done
ip netns exec client ip addr add 172.31.110.10/24 dev c1
ip netns exec client ip link set c1 up
ip netns exec server ip addr add 172.31.110.20/24 dev s1
ip netns exec server ip link set s1 up
# Add forwarding for ARP and ip packets - completely wildcarded
ovs_add_flow "test_ct_connect_v4" ct4 \
'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
ovs_add_flow "test_ct_connect_v4" ct4 \
'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
ovs_add_flow "test_ct_connect_v4" ct4 \
'ct_state(-trk),eth(),eth_type(0x0800),ipv4()' \
'ct(commit),recirc(0x1)' || return 1
ovs_add_flow "test_ct_connect_v4" ct4 \
'recirc_id(0x1),ct_state(+trk+new),in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10)' \
'2' || return 1
ovs_add_flow "test_ct_connect_v4" ct4 \
'recirc_id(0x1),ct_state(+trk+est),in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10)' \
'2' || return 1
ovs_add_flow "test_ct_connect_v4" ct4 \
'recirc_id(0x1),ct_state(+trk+est),in_port(2),eth(),eth_type(0x0800),ipv4(dst=172.31.110.10)' \
'1' || return 1
ovs_add_flow "test_ct_connect_v4" ct4 \
'recirc_id(0x1),ct_state(+trk+inv),eth(),eth_type(0x0800),ipv4()' 'drop' || \
return 1
# do a ping
ovs_sbx "test_ct_connect_v4" ip netns exec client ping 172.31.110.20 -c 3 || return 1
# create an echo server in 'server'
echo "server" | \
ovs_netns_spawn_daemon "test_ct_connect_v4" "server" \
nc -lvnp 4443
ovs_sbx "test_ct_connect_v4" ip netns exec client nc -i 1 -zv 172.31.110.20 4443 || return 1
# Now test in the other direction (should fail)
echo "client" | \
ovs_netns_spawn_daemon "test_ct_connect_v4" "client" \
nc -lvnp 4443
ovs_sbx "test_ct_connect_v4" ip netns exec client nc -i 1 -zv 172.31.110.10 4443
if [ $? == 0 ]; then
info "ct connect to client was successful"
return 1
fi
info "done..."
return 0
}
# connect_v4 test
# - client has 1500 byte MTU
# - server has 1500 byte MTU
# - use ICMP to ping in each direction
test_connect_v4 () {
sbx_add "test_connect_v4" || return $?
ovs_add_dp "test_connect_v4" cv4 || return 1
info "create namespaces"
for ns in client server; do
ovs_add_netns_and_veths "test_connect_v4" "cv4" "$ns" \
"${ns:0:1}0" "${ns:0:1}1" || return 1
done
ip netns exec client ip addr add 172.31.110.10/24 dev c1
ip netns exec client ip link set c1 up
ip netns exec server ip addr add 172.31.110.20/24 dev s1
ip netns exec server ip link set s1 up
# Add forwarding for ARP and ip packets - completely wildcarded
ovs_add_flow "test_connect_v4" cv4 \
'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
ovs_add_flow "test_connect_v4" cv4 \
'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
ovs_add_flow "test_connect_v4" cv4 \
'in_port(1),eth(),eth_type(0x0800),ipv4(src=172.31.110.10)' '2' || return 1
ovs_add_flow "test_connect_v4" cv4 \
'in_port(2),eth(),eth_type(0x0800),ipv4(src=172.31.110.20)' '1' || return 1
# do a ping
ovs_sbx "test_connect_v4" ip netns exec client ping 172.31.110.20 -c 3 || return 1
info "done..."
return 0
}
# nat_connect_v4 test
# - client has 1500 byte MTU
# - server has 1500 byte MTU
# - use ICMP to ping in each direction
# - only allow CT state stuff to pass through new in c -> s
test_nat_connect_v4 () {
which nc >/dev/null 2>/dev/null || return $ksft_skip
sbx_add "test_nat_connect_v4" || return $?
ovs_add_dp "test_nat_connect_v4" nat4 || return 1
info "create namespaces"
for ns in client server; do
ovs_add_netns_and_veths "test_nat_connect_v4" "nat4" "$ns" \
"${ns:0:1}0" "${ns:0:1}1" || return 1
done
ip netns exec client ip addr add 172.31.110.10/24 dev c1
ip netns exec client ip link set c1 up
ip netns exec server ip addr add 172.31.110.20/24 dev s1
ip netns exec server ip link set s1 up
ip netns exec client ip route add default via 172.31.110.20
ovs_add_flow "test_nat_connect_v4" nat4 \
'in_port(1),eth(),eth_type(0x0806),arp()' '2' || return 1
ovs_add_flow "test_nat_connect_v4" nat4 \
'in_port(2),eth(),eth_type(0x0806),arp()' '1' || return 1
ovs_add_flow "test_nat_connect_v4" nat4 \
"ct_state(-trk),in_port(1),eth(),eth_type(0x0800),ipv4(dst=192.168.0.20)" \
"ct(commit,nat(dst=172.31.110.20)),recirc(0x1)"
ovs_add_flow "test_nat_connect_v4" nat4 \
"ct_state(-trk),in_port(2),eth(),eth_type(0x0800),ipv4()" \
"ct(commit,nat),recirc(0x2)"
ovs_add_flow "test_nat_connect_v4" nat4 \
"recirc_id(0x1),ct_state(+trk-inv),in_port(1),eth(),eth_type(0x0800),ipv4()" "2"
ovs_add_flow "test_nat_connect_v4" nat4 \
"recirc_id(0x2),ct_state(+trk-inv),in_port(2),eth(),eth_type(0x0800),ipv4()" "1"
# do a ping
ovs_sbx "test_nat_connect_v4" ip netns exec client ping 192.168.0.20 -c 3 || return 1
# create an echo server in 'server'
echo "server" | \
ovs_netns_spawn_daemon "test_nat_connect_v4" "server" \
nc -lvnp 4443
ovs_sbx "test_nat_connect_v4" ip netns exec client nc -i 1 -zv 192.168.0.20 4443 || return 1
# Now test in the other direction (should fail)
echo "client" | \
ovs_netns_spawn_daemon "test_nat_connect_v4" "client" \
nc -lvnp 4443
ovs_sbx "test_nat_connect_v4" ip netns exec client nc -i 1 -zv 172.31.110.10 4443
if [ $? == 0 ]; then
info "connect to client was successful"
return 1
fi
info "done..."
return 0
}
# nat_related_v4 test
# - client->server ip packets go via SNAT
# - client solicits ICMP destination unreachable packet from server
# - undo NAT for ICMP reply and test dst ip has been updated
test_nat_related_v4 () {
which nc >/dev/null 2>/dev/null || return $ksft_skip
sbx_add "test_nat_related_v4" || return $?
ovs_add_dp "test_nat_related_v4" natrelated4 || return 1
info "create namespaces"
for ns in client server; do
ovs_add_netns_and_veths "test_nat_related_v4" "natrelated4" "$ns" \
"${ns:0:1}0" "${ns:0:1}1" || return 1
done
ip netns exec client ip addr add 172.31.110.10/24 dev c1
ip netns exec client ip link set c1 up
ip netns exec server ip addr add 172.31.110.20/24 dev s1
ip netns exec server ip link set s1 up
ip netns exec server ip route add 192.168.0.20/32 via 172.31.110.10
# Allow ARP
ovs_add_flow "test_nat_related_v4" natrelated4 \
"in_port(1),eth(),eth_type(0x0806),arp()" "2" || return 1
ovs_add_flow "test_nat_related_v4" natrelated4 \
"in_port(2),eth(),eth_type(0x0806),arp()" "1" || return 1
# Allow IP traffic from client->server, rewrite source IP with SNAT to 192.168.0.20
ovs_add_flow "test_nat_related_v4" natrelated4 \
"ct_state(-trk),in_port(1),eth(),eth_type(0x0800),ipv4(dst=172.31.110.20)" \
"ct(commit,nat(src=192.168.0.20)),recirc(0x1)" || return 1
ovs_add_flow "test_nat_related_v4" natrelated4 \
"recirc_id(0x1),ct_state(+trk-inv),in_port(1),eth(),eth_type(0x0800),ipv4()" \
"2" || return 1
# Allow related ICMP responses back from server and undo NAT to restore original IP
# Drop any ICMP related packets where dst ip hasn't been restored back to original IP
ovs_add_flow "test_nat_related_v4" natrelated4 \
"ct_state(-trk),in_port(2),eth(),eth_type(0x0800),ipv4()" \
"ct(commit,nat),recirc(0x2)" || return 1
ovs_add_flow "test_nat_related_v4" natrelated4 \
"recirc_id(0x2),ct_state(+rel+trk),in_port(2),eth(),eth_type(0x0800),ipv4(src=172.31.110.20,dst=172.31.110.10,proto=1),icmp()" \
"1" || return 1
ovs_add_flow "test_nat_related_v4" natrelated4 \
"recirc_id(0x2),ct_state(+rel+trk),in_port(2),eth(),eth_type(0x0800),ipv4(dst=192.168.0.20,proto=1),icmp()" \
"drop" || return 1
# Solicit destination unreachable response from server
ovs_sbx "test_nat_related_v4" ip netns exec client \
bash -c "echo a | nc -u -w 1 172.31.110.20 10000"
# Check to make sure no packets matched the drop rule with incorrect dst ip
python3 "$ovs_base/ovs-dpctl.py" dump-flows natrelated4 \
| grep "drop" | grep "packets:0" >/dev/null || return 1
info "done..."
return 0
}
# netlink_validation
# - Create a dp
# - check no warning with "old version" simulation
test_netlink_checks () {
sbx_add "test_netlink_checks" || return 1
info "setting up new DP"
ovs_add_dp "test_netlink_checks" nv0 || return 1
# now try again
PRE_TEST=$(dmesg | grep -E "RIP: [0-9a-fA-Fx]+:ovs_dp_cmd_new\+")
ovs_add_dp "test_netlink_checks" nv0 -V 0 || return 1
POST_TEST=$(dmesg | grep -E "RIP: [0-9a-fA-Fx]+:ovs_dp_cmd_new\+")
if [ "$PRE_TEST" != "$POST_TEST" ]; then
info "failed - gen warning"
return 1
fi
ovs_add_netns_and_veths "test_netlink_checks" nv0 left left0 l0 || \
return 1
ovs_add_netns_and_veths "test_netlink_checks" nv0 right right0 r0 || \
return 1
[ $(python3 $ovs_base/ovs-dpctl.py show nv0 | grep port | \
wc -l) == 3 ] || \
return 1
ovs_del_if "test_netlink_checks" nv0 right0 || return 1
[ $(python3 $ovs_base/ovs-dpctl.py show nv0 | grep port | \
wc -l) == 2 ] || \
return 1
info "Checking clone depth"
ERR_MSG="Flow actions may not be safe on all matching packets"
PRE_TEST=$(dmesg | grep -c "${ERR_MSG}")
ovs_add_flow "test_netlink_checks" nv0 \
'in_port(1),eth(),eth_type(0x800),ipv4()' \
'clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(clone(drop)))))))))))))))))' \
>/dev/null 2>&1 && return 1
POST_TEST=$(dmesg | grep -c "${ERR_MSG}")
if [ "$PRE_TEST" == "$POST_TEST" ]; then
info "failed - clone depth too large"
return 1
fi
PRE_TEST=$(dmesg | grep -c "${ERR_MSG}")
ovs_add_flow "test_netlink_checks" nv0 \
'in_port(1),eth(),eth_type(0x0806),arp()' 'drop(0),2' \
&> /dev/null && return 1
POST_TEST=$(dmesg | grep -c "${ERR_MSG}")
if [ "$PRE_TEST" == "$POST_TEST" ]; then
info "failed - error not generated"
return 1
fi
return 0
}
test_upcall_interfaces() {
sbx_add "test_upcall_interfaces" || return 1
info "setting up new DP"
ovs_add_dp "test_upcall_interfaces" ui0 -V 2:1 || return 1
ovs_add_netns_and_veths "test_upcall_interfaces" ui0 upc left0 l0 \
172.31.110.1/24 -u || return 1
ovs_wait grep -q "listening on upcall packet handler" ${ovs_dir}/left0.out
info "sending arping"
ip netns exec upc arping -I l0 172.31.110.20 -c 1 \
>$ovs_dir/arping.stdout 2>$ovs_dir/arping.stderr
grep -E "MISS upcall\[0/yes\]: .*arp\(sip=172.31.110.1,tip=172.31.110.20,op=1,sha=" $ovs_dir/left0.out >/dev/null 2>&1 || return 1
return 0
}
run_test() {
(
tname="$1"
tdesc="$2"
if python3 ovs-dpctl.py -h 2>&1 | \
grep -E "Need to (install|upgrade) the python" >/dev/null 2>&1; then
stdbuf -o0 printf "TEST: %-60s [PYLIB]\n" "${tdesc}"
return $ksft_skip
fi
python3 ovs-dpctl.py show >/dev/null 2>&1 || \
echo "[DPCTL] show exception."
if ! lsmod | grep openvswitch >/dev/null 2>&1; then
stdbuf -o0 printf "TEST: %-60s [NOMOD]\n" "${tdesc}"
return $ksft_skip
fi
printf "TEST: %-60s [START]\n" "${tname}"
unset IFS
eval test_${tname}
ret=$?
if [ $ret -eq 0 ]; then
printf "TEST: %-60s [ OK ]\n" "${tdesc}"
ovs_exit_sig
rm -rf "$ovs_dir"
elif [ $ret -eq 1 ]; then
printf "TEST: %-60s [FAIL]\n" "${tdesc}"
if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
echo
echo "Pausing. Logs in $ovs_dir/. Hit enter to continue"
read a
fi
ovs_exit_sig
[ "${PAUSE_ON_FAIL}" = "yes" ] || rm -rf "$ovs_dir"
exit 1
elif [ $ret -eq $ksft_skip ]; then
printf "TEST: %-60s [SKIP]\n" "${tdesc}"
elif [ $ret -eq 2 ]; then
rm -rf test_${tname}
run_test "$1" "$2"
fi
return $ret
)
ret=$?
case $ret in
0)
[ $all_skipped = true ] && [ $exitcode=$ksft_skip ] && exitcode=0
all_skipped=false
;;
$ksft_skip)
[ $all_skipped = true ] && exitcode=$ksft_skip
;;
*)
all_skipped=false
exitcode=1
;;
esac
return $ret
}
exitcode=0
desc=0
all_skipped=true
while getopts :pvt o
do
case $o in
p) PAUSE_ON_FAIL=yes;;
v) VERBOSE=1;;
t) if which tcpdump > /dev/null 2>&1; then
TRACING=1
else
echo "=== tcpdump not available, tracing disabled"
fi
;;
*) usage;;
esac
done
shift $(($OPTIND-1))
IFS="
"
for arg do
# Check first that all requested tests are available before running any
command -v > /dev/null "test_${arg}" || { echo "=== Test ${arg} not found"; usage; }
done
name=""
desc=""
for t in ${tests}; do
[ "${name}" = "" ] && name="${t}" && continue
[ "${desc}" = "" ] && desc="${t}"
run_this=1
for arg do
[ "${arg}" != "${arg#--*}" ] && continue
[ "${arg}" = "${name}" ] && run_this=1 && break
run_this=0
done
if [ $run_this -eq 1 ]; then
run_test "${name}" "${desc}"
fi
name=""
desc=""
done
exit ${exitcode}
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