name : test_vxlan_nolocalbypass.sh #!/bin/bash # SPDX-License-Identifier: GPL-2.0 # This test is for checking the [no]localbypass VXLAN device option. The test # configures two VXLAN devices in the same network namespace and a tc filter on # the loopback device that drops encapsulated packets. The test sends packets # from the first VXLAN device and verifies that by default these packets are # received by the second VXLAN device. The test then enables the nolocalbypass # option and verifies that packets are no longer received by the second VXLAN # device. source lib.sh ret=0 TESTS=" nolocalbypass " VERBOSE=0 PAUSE_ON_FAIL=no PAUSE=no ################################################################################ # Utilities 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" "${msg}" if [ "$VERBOSE" = "1" ]; then echo " rc=$rc, expected $expected" fi if [ "${PAUSE_ON_FAIL}" = "yes" ]; then echo echo "hit enter to continue, 'q' to quit" read a [ "$a" = "q" ] && exit 1 fi fi if [ "${PAUSE}" = "yes" ]; then echo echo "hit enter to continue, 'q' to quit" read a [ "$a" = "q" ] && exit 1 fi [ "$VERBOSE" = "1" ] && echo } run_cmd() { local cmd="$1" local out local stderr="2>/dev/null" if [ "$VERBOSE" = "1" ]; then printf "COMMAND: $cmd\n" stderr= fi out=$(eval $cmd $stderr) rc=$? if [ "$VERBOSE" = "1" -a -n "$out" ]; then echo " $out" fi return $rc } tc_check_packets() { local ns=$1; shift local id=$1; shift local handle=$1; shift local count=$1; shift local pkts sleep 0.1 pkts=$(tc -n $ns -j -s filter show $id \ | jq ".[] | select(.options.handle == $handle) | \ .options.actions[0].stats.packets") [[ $pkts == $count ]] } ################################################################################ # Setup setup() { setup_ns ns1 ip -n $ns1 address add 192.0.2.1/32 dev lo ip -n $ns1 address add 198.51.100.1/32 dev lo ip -n $ns1 link add name vx0 up type vxlan id 100 local 198.51.100.1 \ dstport 4789 nolearning ip -n $ns1 link add name vx1 up type vxlan id 100 dstport 4790 } cleanup() { cleanup_ns $ns1 } ################################################################################ # Tests nolocalbypass() { local smac=00:01:02:03:04:05 local dmac=00:0a:0b:0c:0d:0e run_cmd "bridge -n $ns1 fdb add $dmac dev vx0 self static dst 192.0.2.1 port 4790" run_cmd "tc -n $ns1 qdisc add dev vx1 clsact" run_cmd "tc -n $ns1 filter add dev vx1 ingress pref 1 handle 101 proto all flower src_mac $smac dst_mac $dmac action pass" run_cmd "tc -n $ns1 qdisc add dev lo clsact" run_cmd "tc -n $ns1 filter add dev lo ingress pref 1 handle 101 proto ip flower ip_proto udp dst_port 4790 action drop" run_cmd "ip -n $ns1 -d -j link show dev vx0 | jq -e '.[][\"linkinfo\"][\"info_data\"][\"localbypass\"] == true'" log_test $? 0 "localbypass enabled" run_cmd "ip netns exec $ns1 mausezahn vx0 -a $smac -b $dmac -c 1 -p 100 -q" tc_check_packets "$ns1" "dev vx1 ingress" 101 1 log_test $? 0 "Packet received by local VXLAN device - localbypass" run_cmd "ip -n $ns1 link set dev vx0 type vxlan nolocalbypass" run_cmd "ip -n $ns1 -d -j link show dev vx0 | jq -e '.[][\"linkinfo\"][\"info_data\"][\"localbypass\"] == false'" log_test $? 0 "localbypass disabled" run_cmd "ip netns exec $ns1 mausezahn vx0 -a $smac -b $dmac -c 1 -p 100 -q" tc_check_packets "$ns1" "dev vx1 ingress" 101 1 log_test $? 0 "Packet not received by local VXLAN device - nolocalbypass" run_cmd "ip -n $ns1 link set dev vx0 type vxlan localbypass" run_cmd "ip -n $ns1 -d -j link show dev vx0 | jq -e '.[][\"linkinfo\"][\"info_data\"][\"localbypass\"] == true'" log_test $? 0 "localbypass enabled" run_cmd "ip netns exec $ns1 mausezahn vx0 -a $smac -b $dmac -c 1 -p 100 -q" tc_check_packets "$ns1" "dev vx1 ingress" 101 2 log_test $? 0 "Packet received by local VXLAN device - localbypass" } ################################################################################ # Usage usage() { cat <<EOF usage: ${0##*/} OPTS -t <test> Test(s) to run (default: all) (options: $TESTS) -p Pause on fail -P Pause after each test before cleanup -v Verbose mode (show commands and output) EOF } ################################################################################ # Main trap cleanup EXIT while getopts ":t:pPvh" opt; do case $opt in t) TESTS=$OPTARG ;; p) PAUSE_ON_FAIL=yes;; P) PAUSE=yes;; v) VERBOSE=$(($VERBOSE + 1));; h) usage; exit 0;; *) usage; exit 1;; esac done # Make sure we don't pause twice. [ "${PAUSE}" = "yes" ] && PAUSE_ON_FAIL=no if [ "$(id -u)" -ne 0 ];then echo "SKIP: Need root privileges" exit $ksft_skip; fi if [ ! -x "$(command -v ip)" ]; then echo "SKIP: Could not run test without ip tool" exit $ksft_skip fi if [ ! -x "$(command -v bridge)" ]; then echo "SKIP: Could not run test without bridge tool" exit $ksft_skip fi if [ ! -x "$(command -v mausezahn)" ]; then echo "SKIP: Could not run test without mausezahn tool" exit $ksft_skip fi if [ ! -x "$(command -v jq)" ]; then echo "SKIP: Could not run test without jq tool" exit $ksft_skip fi ip link help vxlan 2>&1 | grep -q "localbypass" if [ $? -ne 0 ]; then echo "SKIP: iproute2 ip too old, missing VXLAN nolocalbypass support" exit $ksft_skip fi cleanup for t in $TESTS do setup; $t; cleanup; done if [ "$TESTS" != "none" ]; then printf "\nTests passed: %3d\n" ${nsuccess} printf "Tests failed: %3d\n" ${nfail} fi exit $ret