diff options
Diffstat (limited to 'tools/testing/selftests/net/forwarding/lib.sh')
-rw-r--r-- | tools/testing/selftests/net/forwarding/lib.sh | 533 |
1 files changed, 533 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh new file mode 100644 index 000000000000..23866a685f77 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -0,0 +1,533 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +############################################################################## +# Defines + +# Can be overridden by the configuration file. +PING=${PING:=ping} +PING6=${PING6:=ping6} +MZ=${MZ:=mausezahn} +WAIT_TIME=${WAIT_TIME:=5} +PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} +PAUSE_ON_CLEANUP=${PAUSE_ON_CLEANUP:=no} + +if [[ -f forwarding.config ]]; then + source forwarding.config +fi + +############################################################################## +# Sanity checks + +if [[ "$(id -u)" -ne 0 ]]; then + echo "SKIP: need root privileges" + exit 0 +fi + +tc -j &> /dev/null +if [[ $? -ne 0 ]]; then + echo "SKIP: iproute2 too old, missing JSON support" + exit 0 +fi + +tc filter help 2>&1 | grep block &> /dev/null +if [[ $? -ne 0 ]]; then + echo "SKIP: iproute2 too old, missing shared block support" + exit 0 +fi + +if [[ ! -x "$(command -v jq)" ]]; then + echo "SKIP: jq not installed" + exit 0 +fi + +if [[ ! -x "$(command -v $MZ)" ]]; then + echo "SKIP: $MZ not installed" + exit 0 +fi + +if [[ ! -v NUM_NETIFS ]]; then + echo "SKIP: importer does not define \"NUM_NETIFS\"" + exit 0 +fi + +############################################################################## +# Command line options handling + +count=0 + +while [[ $# -gt 0 ]]; do + if [[ "$count" -eq "0" ]]; then + unset NETIFS + declare -A NETIFS + fi + count=$((count + 1)) + NETIFS[p$count]="$1" + shift +done + +############################################################################## +# Network interfaces configuration + +for i in $(eval echo {1..$NUM_NETIFS}); do + ip link show dev ${NETIFS[p$i]} &> /dev/null + if [[ $? -ne 0 ]]; then + echo "SKIP: could not find all required interfaces" + exit 0 + fi +done + +############################################################################## +# Helpers + +# Exit status to return at the end. Set in case one of the tests fails. +EXIT_STATUS=0 +# Per-test return value. Clear at the beginning of each test. +RET=0 + +check_err() +{ + local err=$1 + local msg=$2 + + if [[ $RET -eq 0 && $err -ne 0 ]]; then + RET=$err + retmsg=$msg + fi +} + +check_fail() +{ + local err=$1 + local msg=$2 + + if [[ $RET -eq 0 && $err -eq 0 ]]; then + RET=1 + retmsg=$msg + fi +} + +log_test() +{ + local test_name=$1 + local opt_str=$2 + + if [[ $# -eq 2 ]]; then + opt_str="($opt_str)" + fi + + if [[ $RET -ne 0 ]]; then + EXIT_STATUS=1 + printf "TEST: %-60s [FAIL]\n" "$test_name $opt_str" + if [[ ! -z "$retmsg" ]]; then + printf "\t%s\n" "$retmsg" + fi + if [ "${PAUSE_ON_FAIL}" = "yes" ]; then + echo "Hit enter to continue, 'q' to quit" + read a + [ "$a" = "q" ] && exit 1 + fi + return 1 + fi + + printf "TEST: %-60s [PASS]\n" "$test_name $opt_str" + return 0 +} + +log_info() +{ + local msg=$1 + + echo "INFO: $msg" +} + +setup_wait() +{ + for i in $(eval echo {1..$NUM_NETIFS}); do + while true; do + ip link show dev ${NETIFS[p$i]} up \ + | grep 'state UP' &> /dev/null + if [[ $? -ne 0 ]]; then + sleep 1 + else + break + fi + done + done + + # Make sure links are ready. + sleep $WAIT_TIME +} + +pre_cleanup() +{ + if [ "${PAUSE_ON_CLEANUP}" = "yes" ]; then + echo "Pausing before cleanup, hit any key to continue" + read + fi +} + +vrf_prepare() +{ + ip -4 rule add pref 32765 table local + ip -4 rule del pref 0 + ip -6 rule add pref 32765 table local + ip -6 rule del pref 0 +} + +vrf_cleanup() +{ + ip -6 rule add pref 0 table local + ip -6 rule del pref 32765 + ip -4 rule add pref 0 table local + ip -4 rule del pref 32765 +} + +__last_tb_id=0 +declare -A __TB_IDS + +__vrf_td_id_assign() +{ + local vrf_name=$1 + + __last_tb_id=$((__last_tb_id + 1)) + __TB_IDS[$vrf_name]=$__last_tb_id + return $__last_tb_id +} + +__vrf_td_id_lookup() +{ + local vrf_name=$1 + + return ${__TB_IDS[$vrf_name]} +} + +vrf_create() +{ + local vrf_name=$1 + local tb_id + + __vrf_td_id_assign $vrf_name + tb_id=$? + + ip link add dev $vrf_name type vrf table $tb_id + ip -4 route add table $tb_id unreachable default metric 4278198272 + ip -6 route add table $tb_id unreachable default metric 4278198272 +} + +vrf_destroy() +{ + local vrf_name=$1 + local tb_id + + __vrf_td_id_lookup $vrf_name + tb_id=$? + + ip -6 route del table $tb_id unreachable default metric 4278198272 + ip -4 route del table $tb_id unreachable default metric 4278198272 + ip link del dev $vrf_name +} + +__addr_add_del() +{ + local if_name=$1 + local add_del=$2 + local array + + shift + shift + array=("${@}") + + for addrstr in "${array[@]}"; do + ip address $add_del $addrstr dev $if_name + done +} + +simple_if_init() +{ + local if_name=$1 + local vrf_name + local array + + shift + vrf_name=v$if_name + array=("${@}") + + vrf_create $vrf_name + ip link set dev $if_name master $vrf_name + ip link set dev $vrf_name up + ip link set dev $if_name up + + __addr_add_del $if_name add "${array[@]}" +} + +simple_if_fini() +{ + local if_name=$1 + local vrf_name + local array + + shift + vrf_name=v$if_name + array=("${@}") + + __addr_add_del $if_name del "${array[@]}" + + ip link set dev $if_name down + vrf_destroy $vrf_name +} + +master_name_get() +{ + local if_name=$1 + + ip -j link show dev $if_name | jq -r '.[]["master"]' +} + +link_stats_tx_packets_get() +{ + local if_name=$1 + + ip -j -s link show dev $if_name | jq '.[]["stats64"]["tx"]["packets"]' +} + +mac_get() +{ + local if_name=$1 + + ip -j link show dev $if_name | jq -r '.[]["address"]' +} + +bridge_ageing_time_get() +{ + local bridge=$1 + local ageing_time + + # Need to divide by 100 to convert to seconds. + ageing_time=$(ip -j -d link show dev $bridge \ + | jq '.[]["linkinfo"]["info_data"]["ageing_time"]') + echo $((ageing_time / 100)) +} + +forwarding_enable() +{ + ipv4_fwd=$(sysctl -n net.ipv4.conf.all.forwarding) + ipv6_fwd=$(sysctl -n net.ipv6.conf.all.forwarding) + + sysctl -q -w net.ipv4.conf.all.forwarding=1 + sysctl -q -w net.ipv6.conf.all.forwarding=1 +} + +forwarding_restore() +{ + sysctl -q -w net.ipv6.conf.all.forwarding=$ipv6_fwd + sysctl -q -w net.ipv4.conf.all.forwarding=$ipv4_fwd +} + +tc_offload_check() +{ + for i in $(eval echo {1..$NUM_NETIFS}); do + ethtool -k ${NETIFS[p$i]} \ + | grep "hw-tc-offload: on" &> /dev/null + if [[ $? -ne 0 ]]; then + return 1 + fi + done + + return 0 +} + +############################################################################## +# Tests + +ping_test() +{ + local if_name=$1 + local dip=$2 + local vrf_name + + RET=0 + + vrf_name=$(master_name_get $if_name) + ip vrf exec $vrf_name $PING $dip -c 10 -i 0.1 -w 2 &> /dev/null + check_err $? + log_test "ping" +} + +ping6_test() +{ + local if_name=$1 + local dip=$2 + local vrf_name + + RET=0 + + vrf_name=$(master_name_get $if_name) + ip vrf exec $vrf_name $PING6 $dip -c 10 -i 0.1 -w 2 &> /dev/null + check_err $? + log_test "ping6" +} + +learning_test() +{ + local bridge=$1 + local br_port1=$2 # Connected to `host1_if`. + local host1_if=$3 + local host2_if=$4 + local mac=de:ad:be:ef:13:37 + local ageing_time + + RET=0 + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_fail $? "Found FDB record when should not" + + # Disable unknown unicast flooding on `br_port1` to make sure + # packets are only forwarded through the port after a matching + # FDB entry was installed. + bridge link set dev $br_port1 flood off + + tc qdisc add dev $host1_if ingress + tc filter add dev $host1_if ingress protocol ip pref 1 handle 101 \ + flower dst_mac $mac action drop + + $MZ $host2_if -c 1 -p 64 -b $mac -t ip -q + sleep 1 + + tc -j -s filter show dev $host1_if ingress \ + | jq -e ".[] | select(.options.handle == 101) \ + | select(.options.actions[0].stats.packets == 1)" &> /dev/null + check_fail $? "Packet reached second host when should not" + + $MZ $host1_if -c 1 -p 64 -a $mac -t ip -q + sleep 1 + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_err $? "Did not find FDB record when should" + + $MZ $host2_if -c 1 -p 64 -b $mac -t ip -q + sleep 1 + + tc -j -s filter show dev $host1_if ingress \ + | jq -e ".[] | select(.options.handle == 101) \ + | select(.options.actions[0].stats.packets == 1)" &> /dev/null + check_err $? "Packet did not reach second host when should" + + # Wait for 10 seconds after the ageing time to make sure FDB + # record was aged-out. + ageing_time=$(bridge_ageing_time_get $bridge) + sleep $((ageing_time + 10)) + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_fail $? "Found FDB record when should not" + + bridge link set dev $br_port1 learning off + + $MZ $host1_if -c 1 -p 64 -a $mac -t ip -q + sleep 1 + + bridge -j fdb show br $bridge brport $br_port1 \ + | jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null + check_fail $? "Found FDB record when should not" + + bridge link set dev $br_port1 learning on + + tc filter del dev $host1_if ingress protocol ip pref 1 handle 101 flower + tc qdisc del dev $host1_if ingress + + bridge link set dev $br_port1 flood on + + log_test "FDB learning" +} + +flood_test_do() +{ + local should_flood=$1 + local mac=$2 + local ip=$3 + local host1_if=$4 + local host2_if=$5 + local err=0 + + # Add an ACL on `host2_if` which will tell us whether the packet + # was flooded to it or not. + tc qdisc add dev $host2_if ingress + tc filter add dev $host2_if ingress protocol ip pref 1 handle 101 \ + flower dst_mac $mac action drop + + $MZ $host1_if -c 1 -p 64 -b $mac -B $ip -t ip -q + sleep 1 + + tc -j -s filter show dev $host2_if ingress \ + | jq -e ".[] | select(.options.handle == 101) \ + | select(.options.actions[0].stats.packets == 1)" &> /dev/null + if [[ $? -ne 0 && $should_flood == "true" || \ + $? -eq 0 && $should_flood == "false" ]]; then + err=1 + fi + + tc filter del dev $host2_if ingress protocol ip pref 1 handle 101 flower + tc qdisc del dev $host2_if ingress + + return $err +} + +flood_unicast_test() +{ + local br_port=$1 + local host1_if=$2 + local host2_if=$3 + local mac=de:ad:be:ef:13:37 + local ip=192.0.2.100 + + RET=0 + + bridge link set dev $br_port flood off + + flood_test_do false $mac $ip $host1_if $host2_if + check_err $? "Packet flooded when should not" + + bridge link set dev $br_port flood on + + flood_test_do true $mac $ip $host1_if $host2_if + check_err $? "Packet was not flooded when should" + + log_test "Unknown unicast flood" +} + +flood_multicast_test() +{ + local br_port=$1 + local host1_if=$2 + local host2_if=$3 + local mac=01:00:5e:00:00:01 + local ip=239.0.0.1 + + RET=0 + + bridge link set dev $br_port mcast_flood off + + flood_test_do false $mac $ip $host1_if $host2_if + check_err $? "Packet flooded when should not" + + bridge link set dev $br_port mcast_flood on + + flood_test_do true $mac $ip $host1_if $host2_if + check_err $? "Packet was not flooded when should" + + log_test "Unregistered multicast flood" +} + +flood_test() +{ + # `br_port` is connected to `host2_if` + local br_port=$1 + local host1_if=$2 + local host2_if=$3 + + flood_unicast_test $br_port $host1_if $host2_if + flood_multicast_test $br_port $host1_if $host2_if +} |