Add test to make sure that the localbypass option is on by default.
Add test to change vxlan localbypass to nolocalbypass and check
that packets are delivered to userspace.
Signed-off-by: Vladimir Nikishkin <vladimir@xxxxxxxxxxxx>
---
tools/testing/selftests/net/Makefile | 1 +
.../selftests/net/test_vxlan_nolocalbypass.sh | 240 ++++++++++++++++++
2 files changed, 241 insertions(+)
create mode 100755 tools/testing/selftests/net/test_vxlan_nolocalbypass.sh
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index c12df57d5539..7f3ab2a93ed6 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -84,6 +84,7 @@ TEST_GEN_FILES += ip_local_port_range
TEST_GEN_FILES += bind_wildcard
TEST_PROGS += test_vxlan_mdb.sh
TEST_PROGS += test_bridge_neigh_suppress.sh
+TEST_PROGS += test_vxlan_nolocalbypass.sh
TEST_FILES := settings
diff --git a/tools/testing/selftests/net/test_vxlan_nolocalbypass.sh b/tools/testing/selftests/net/test_vxlan_nolocalbypass.sh
new file mode 100755
index 000000000000..46067db53068
--- /dev/null
+++ b/tools/testing/selftests/net/test_vxlan_nolocalbypass.sh
@@ -0,0 +1,240 @@
+#!/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.
+
+ret=0
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+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()
+{
+ ip netns add ns1
+
+ ip -n ns1 link set dev lo up
+ 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()
+{
+ ip netns del ns1 &> /dev/null
+}
+
+################################################################################
+# 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 link show dev vx0 | grep ' localbypass'"
+ 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 link show dev vx0 | grep 'nolocalbypass'"
+ 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 link show dev vx0 | grep ' localbypass'"
+ 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
--
2.35.8
--
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