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-rwxr-xr-xtools/testing/selftests/net/test_bridge_neigh_suppress.sh855
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diff --git a/tools/testing/selftests/net/test_bridge_neigh_suppress.sh b/tools/testing/selftests/net/test_bridge_neigh_suppress.sh
new file mode 100755
index 000000000000..8533393a4f18
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+++ b/tools/testing/selftests/net/test_bridge_neigh_suppress.sh
@@ -0,0 +1,855 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# This test is for checking bridge neighbor suppression functionality. The
+# topology consists of two bridges (VTEPs) connected using VXLAN. A single
+# host is connected to each bridge over multiple VLANs. The test checks that
+# ARP/NS messages from the first host are suppressed on the VXLAN port when
+# should.
+#
+# +-----------------------+ +------------------------+
+# | h1 | | h2 |
+# | | | |
+# | + eth0.10 | | + eth0.10 |
+# | | 192.0.2.1/28 | | | 192.0.2.2/28 |
+# | | 2001:db8:1::1/64 | | | 2001:db8:1::2/64 |
+# | | | | | |
+# | | + eth0.20 | | | + eth0.20 |
+# | \ | 192.0.2.17/28 | | \ | 192.0.2.18/28 |
+# | \ | 2001:db8:2::1/64 | | \ | 2001:db8:2::2/64 |
+# | \| | | \| |
+# | + eth0 | | + eth0 |
+# +----|------------------+ +----|-------------------+
+# | |
+# | |
+# +----|-------------------------------+ +----|-------------------------------+
+# | + swp1 + vx0 | | + swp1 + vx0 |
+# | | | | | | | |
+# | | br0 | | | | | |
+# | +------------+-----------+ | | +------------+-----------+ |
+# | | | | | |
+# | | | | | |
+# | +---+---+ | | +---+---+ |
+# | | | | | | | |
+# | | | | | | | |
+# | + + | | + + |
+# | br0.10 br0.20 | | br0.10 br0.20 |
+# | | | |
+# | 192.0.2.33 | | 192.0.2.34 |
+# | + lo | | + lo |
+# | | | |
+# | | | |
+# | 192.0.2.49/28 | | 192.0.2.50/28 |
+# | veth0 +-------+ veth0 |
+# | | | |
+# | sw1 | | sw2 |
+# +------------------------------------+ +------------------------------------+
+
+source lib.sh
+ret=0
+
+# All tests in this script. Can be overridden with -t option.
+TESTS="
+ neigh_suppress_arp
+ neigh_suppress_ns
+ neigh_vlan_suppress_arp
+ neigh_vlan_suppress_ns
+"
+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_topo_ns()
+{
+ local ns=$1; shift
+
+ ip netns exec $ns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
+ ip netns exec $ns sysctl -qw net.ipv6.conf.default.ignore_routes_with_linkdown=1
+ ip netns exec $ns sysctl -qw net.ipv6.conf.all.accept_dad=0
+ ip netns exec $ns sysctl -qw net.ipv6.conf.default.accept_dad=0
+}
+
+setup_topo()
+{
+ local ns
+
+ setup_ns h1 h2 sw1 sw2
+ for ns in $h1 $h2 $sw1 $sw2; do
+ setup_topo_ns $ns
+ done
+
+ ip link add name veth0 type veth peer name veth1
+ ip link set dev veth0 netns $h1 name eth0
+ ip link set dev veth1 netns $sw1 name swp1
+
+ ip link add name veth0 type veth peer name veth1
+ ip link set dev veth0 netns $sw1 name veth0
+ ip link set dev veth1 netns $sw2 name veth0
+
+ ip link add name veth0 type veth peer name veth1
+ ip link set dev veth0 netns $h2 name eth0
+ ip link set dev veth1 netns $sw2 name swp1
+}
+
+setup_host_common()
+{
+ local ns=$1; shift
+ local v4addr1=$1; shift
+ local v4addr2=$1; shift
+ local v6addr1=$1; shift
+ local v6addr2=$1; shift
+
+ ip -n $ns link set dev eth0 up
+ ip -n $ns link add link eth0 name eth0.10 up type vlan id 10
+ ip -n $ns link add link eth0 name eth0.20 up type vlan id 20
+
+ ip -n $ns address add $v4addr1 dev eth0.10
+ ip -n $ns address add $v4addr2 dev eth0.20
+ ip -n $ns address add $v6addr1 dev eth0.10
+ ip -n $ns address add $v6addr2 dev eth0.20
+}
+
+setup_h1()
+{
+ local ns=$h1
+ local v4addr1=192.0.2.1/28
+ local v4addr2=192.0.2.17/28
+ local v6addr1=2001:db8:1::1/64
+ local v6addr2=2001:db8:2::1/64
+
+ setup_host_common $ns $v4addr1 $v4addr2 $v6addr1 $v6addr2
+}
+
+setup_h2()
+{
+ local ns=$h2
+ local v4addr1=192.0.2.2/28
+ local v4addr2=192.0.2.18/28
+ local v6addr1=2001:db8:1::2/64
+ local v6addr2=2001:db8:2::2/64
+
+ setup_host_common $ns $v4addr1 $v4addr2 $v6addr1 $v6addr2
+}
+
+setup_sw_common()
+{
+ local ns=$1; shift
+ local local_addr=$1; shift
+ local remote_addr=$1; shift
+ local veth_addr=$1; shift
+ local gw_addr=$1; shift
+
+ ip -n $ns address add $local_addr/32 dev lo
+
+ ip -n $ns link set dev veth0 up
+ ip -n $ns address add $veth_addr/28 dev veth0
+ ip -n $ns route add default via $gw_addr
+
+ ip -n $ns link add name br0 up type bridge vlan_filtering 1 \
+ vlan_default_pvid 0 mcast_snooping 0
+
+ ip -n $ns link add link br0 name br0.10 up type vlan id 10
+ bridge -n $ns vlan add vid 10 dev br0 self
+
+ ip -n $ns link add link br0 name br0.20 up type vlan id 20
+ bridge -n $ns vlan add vid 20 dev br0 self
+
+ ip -n $ns link set dev swp1 up master br0
+ bridge -n $ns vlan add vid 10 dev swp1
+ bridge -n $ns vlan add vid 20 dev swp1
+
+ ip -n $ns link add name vx0 up master br0 type vxlan \
+ local $local_addr dstport 4789 nolearning external
+ bridge -n $ns fdb add 00:00:00:00:00:00 dev vx0 self static \
+ dst $remote_addr src_vni 10010
+ bridge -n $ns fdb add 00:00:00:00:00:00 dev vx0 self static \
+ dst $remote_addr src_vni 10020
+ bridge -n $ns link set dev vx0 vlan_tunnel on learning off
+
+ bridge -n $ns vlan add vid 10 dev vx0
+ bridge -n $ns vlan add vid 10 dev vx0 tunnel_info id 10010
+
+ bridge -n $ns vlan add vid 20 dev vx0
+ bridge -n $ns vlan add vid 20 dev vx0 tunnel_info id 10020
+}
+
+setup_sw1()
+{
+ local ns=$sw1
+ local local_addr=192.0.2.33
+ local remote_addr=192.0.2.34
+ local veth_addr=192.0.2.49
+ local gw_addr=192.0.2.50
+
+ setup_sw_common $ns $local_addr $remote_addr $veth_addr $gw_addr
+}
+
+setup_sw2()
+{
+ local ns=$sw2
+ local local_addr=192.0.2.34
+ local remote_addr=192.0.2.33
+ local veth_addr=192.0.2.50
+ local gw_addr=192.0.2.49
+
+ setup_sw_common $ns $local_addr $remote_addr $veth_addr $gw_addr
+}
+
+setup()
+{
+ set -e
+
+ setup_topo
+ setup_h1
+ setup_h2
+ setup_sw1
+ setup_sw2
+
+ sleep 5
+
+ set +e
+}
+
+cleanup()
+{
+ cleanup_ns $h1 $h2 $sw1 $sw2
+}
+
+################################################################################
+# Tests
+
+neigh_suppress_arp_common()
+{
+ local vid=$1; shift
+ local sip=$1; shift
+ local tip=$1; shift
+ local h2_mac
+
+ echo
+ echo "Per-port ARP suppression - VLAN $vid"
+ echo "----------------------------------"
+
+ run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
+ run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto 0x0806 flower indev swp1 arp_tip $tip arp_sip $sip arp_op request action pass"
+
+ # Initial state - check that ARP requests are not suppressed and that
+ # ARP replies are received.
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
+ log_test $? 0 "arping"
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "ARP suppression"
+
+ # Enable neighbor suppression and check that nothing changes compared
+ # to the initial state.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
+ log_test $? 0 "arping"
+ tc_check_packets $sw1 "dev vx0 egress" 101 2
+ log_test $? 0 "ARP suppression"
+
+ # Install an FDB entry for the remote host and check that nothing
+ # changes compared to the initial state.
+ h2_mac=$(ip -n $h2 -j -p link show eth0.$vid | jq -r '.[]["address"]')
+ run_cmd "bridge -n $sw1 fdb replace $h2_mac dev vx0 master static vlan $vid"
+ log_test $? 0 "FDB entry installation"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
+ log_test $? 0 "arping"
+ tc_check_packets $sw1 "dev vx0 egress" 101 3
+ log_test $? 0 "ARP suppression"
+
+ # Install a neighbor on the matching SVI interface and check that ARP
+ # requests are suppressed.
+ run_cmd "ip -n $sw1 neigh replace $tip lladdr $h2_mac nud permanent dev br0.$vid"
+ log_test $? 0 "Neighbor entry installation"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
+ log_test $? 0 "arping"
+ tc_check_packets $sw1 "dev vx0 egress" 101 3
+ log_test $? 0 "ARP suppression"
+
+ # Take the second host down and check that ARP requests are suppressed
+ # and that ARP replies are received.
+ run_cmd "ip -n $h2 link set dev eth0.$vid down"
+ log_test $? 0 "H2 down"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
+ log_test $? 0 "arping"
+ tc_check_packets $sw1 "dev vx0 egress" 101 3
+ log_test $? 0 "ARP suppression"
+
+ run_cmd "ip -n $h2 link set dev eth0.$vid up"
+ log_test $? 0 "H2 up"
+
+ # Disable neighbor suppression and check that ARP requests are no
+ # longer suppressed.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
+ log_test $? 0 "arping"
+ tc_check_packets $sw1 "dev vx0 egress" 101 4
+ log_test $? 0 "ARP suppression"
+
+ # Take the second host down and check that ARP requests are not
+ # suppressed and that ARP replies are not received.
+ run_cmd "ip -n $h2 link set dev eth0.$vid down"
+ log_test $? 0 "H2 down"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip -I eth0.$vid $tip"
+ log_test $? 1 "arping"
+ tc_check_packets $sw1 "dev vx0 egress" 101 5
+ log_test $? 0 "ARP suppression"
+}
+
+neigh_suppress_arp()
+{
+ local vid=10
+ local sip=192.0.2.1
+ local tip=192.0.2.2
+
+ neigh_suppress_arp_common $vid $sip $tip
+
+ vid=20
+ sip=192.0.2.17
+ tip=192.0.2.18
+ neigh_suppress_arp_common $vid $sip $tip
+}
+
+neigh_suppress_ns_common()
+{
+ local vid=$1; shift
+ local saddr=$1; shift
+ local daddr=$1; shift
+ local maddr=$1; shift
+ local h2_mac
+
+ echo
+ echo "Per-port NS suppression - VLAN $vid"
+ echo "---------------------------------"
+
+ run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
+ run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto ipv6 flower indev swp1 ip_proto icmpv6 dst_ip $maddr src_ip $saddr type 135 code 0 action pass"
+
+ # Initial state - check that NS messages are not suppressed and that ND
+ # messages are received.
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
+ log_test $? 0 "ndisc6"
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "NS suppression"
+
+ # Enable neighbor suppression and check that nothing changes compared
+ # to the initial state.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
+ log_test $? 0 "ndisc6"
+ tc_check_packets $sw1 "dev vx0 egress" 101 2
+ log_test $? 0 "NS suppression"
+
+ # Install an FDB entry for the remote host and check that nothing
+ # changes compared to the initial state.
+ h2_mac=$(ip -n $h2 -j -p link show eth0.$vid | jq -r '.[]["address"]')
+ run_cmd "bridge -n $sw1 fdb replace $h2_mac dev vx0 master static vlan $vid"
+ log_test $? 0 "FDB entry installation"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
+ log_test $? 0 "ndisc6"
+ tc_check_packets $sw1 "dev vx0 egress" 101 3
+ log_test $? 0 "NS suppression"
+
+ # Install a neighbor on the matching SVI interface and check that NS
+ # messages are suppressed.
+ run_cmd "ip -n $sw1 neigh replace $daddr lladdr $h2_mac nud permanent dev br0.$vid"
+ log_test $? 0 "Neighbor entry installation"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
+ log_test $? 0 "ndisc6"
+ tc_check_packets $sw1 "dev vx0 egress" 101 3
+ log_test $? 0 "NS suppression"
+
+ # Take the second host down and check that NS messages are suppressed
+ # and that ND messages are received.
+ run_cmd "ip -n $h2 link set dev eth0.$vid down"
+ log_test $? 0 "H2 down"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
+ log_test $? 0 "ndisc6"
+ tc_check_packets $sw1 "dev vx0 egress" 101 3
+ log_test $? 0 "NS suppression"
+
+ run_cmd "ip -n $h2 link set dev eth0.$vid up"
+ log_test $? 0 "H2 up"
+
+ # Disable neighbor suppression and check that NS messages are no longer
+ # suppressed.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
+ log_test $? 0 "ndisc6"
+ tc_check_packets $sw1 "dev vx0 egress" 101 4
+ log_test $? 0 "NS suppression"
+
+ # Take the second host down and check that NS messages are not
+ # suppressed and that ND messages are not received.
+ run_cmd "ip -n $h2 link set dev eth0.$vid down"
+ log_test $? 0 "H2 down"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr -w 5000 $daddr eth0.$vid"
+ log_test $? 2 "ndisc6"
+ tc_check_packets $sw1 "dev vx0 egress" 101 5
+ log_test $? 0 "NS suppression"
+}
+
+neigh_suppress_ns()
+{
+ local vid=10
+ local saddr=2001:db8:1::1
+ local daddr=2001:db8:1::2
+ local maddr=ff02::1:ff00:2
+
+ neigh_suppress_ns_common $vid $saddr $daddr $maddr
+
+ vid=20
+ saddr=2001:db8:2::1
+ daddr=2001:db8:2::2
+ maddr=ff02::1:ff00:2
+
+ neigh_suppress_ns_common $vid $saddr $daddr $maddr
+}
+
+neigh_vlan_suppress_arp()
+{
+ local vid1=10
+ local vid2=20
+ local sip1=192.0.2.1
+ local sip2=192.0.2.17
+ local tip1=192.0.2.2
+ local tip2=192.0.2.18
+ local h2_mac1
+ local h2_mac2
+
+ echo
+ echo "Per-{Port, VLAN} ARP suppression"
+ echo "--------------------------------"
+
+ run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
+ run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto 0x0806 flower indev swp1 arp_tip $tip1 arp_sip $sip1 arp_op request action pass"
+ run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 102 proto 0x0806 flower indev swp1 arp_tip $tip2 arp_sip $sip2 arp_op request action pass"
+
+ h2_mac1=$(ip -n $h2 -j -p link show eth0.$vid1 | jq -r '.[]["address"]')
+ h2_mac2=$(ip -n $h2 -j -p link show eth0.$vid2 | jq -r '.[]["address"]')
+ run_cmd "bridge -n $sw1 fdb replace $h2_mac1 dev vx0 master static vlan $vid1"
+ run_cmd "bridge -n $sw1 fdb replace $h2_mac2 dev vx0 master static vlan $vid2"
+ run_cmd "ip -n $sw1 neigh replace $tip1 lladdr $h2_mac1 nud permanent dev br0.$vid1"
+ run_cmd "ip -n $sw1 neigh replace $tip2 lladdr $h2_mac2 nud permanent dev br0.$vid2"
+
+ # Enable per-{Port, VLAN} neighbor suppression and check that ARP
+ # requests are not suppressed and that ARP replies are received.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress on\""
+ log_test $? 0 "\"neigh_vlan_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
+ log_test $? 0 "arping (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
+ log_test $? 0 "arping (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "ARP suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 1
+ log_test $? 0 "ARP suppression (VLAN $vid2)"
+
+ # Enable neighbor suppression on VLAN 10 and check that only on this
+ # VLAN ARP requests are suppressed.
+ run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on (VLAN $vid1)"
+ run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid2 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid2)"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
+ log_test $? 0 "arping (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
+ log_test $? 0 "arping (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "ARP suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 2
+ log_test $? 0 "ARP suppression (VLAN $vid2)"
+
+ # Enable neighbor suppression on the port and check that it has no
+ # effect compared to previous state.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
+ log_test $? 0 "arping (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
+ log_test $? 0 "arping (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "ARP suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 3
+ log_test $? 0 "ARP suppression (VLAN $vid2)"
+
+ # Disable neighbor suppression on the port and check that it has no
+ # effect compared to previous state.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
+ log_test $? 0 "arping (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
+ log_test $? 0 "arping (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "ARP suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 4
+ log_test $? 0 "ARP suppression (VLAN $vid2)"
+
+ # Disable neighbor suppression on VLAN 10 and check that ARP requests
+ # are no longer suppressed on this VLAN.
+ run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress off"
+ run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid1)"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
+ log_test $? 0 "arping (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
+ log_test $? 0 "arping (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 2
+ log_test $? 0 "ARP suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 5
+ log_test $? 0 "ARP suppression (VLAN $vid2)"
+
+ # Disable per-{Port, VLAN} neighbor suppression, enable neighbor
+ # suppression on the port and check that on both VLANs ARP requests are
+ # suppressed.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress off"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress off\""
+ log_test $? 0 "\"neigh_vlan_suppress\" is off"
+
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip1 -I eth0.$vid1 $tip1"
+ log_test $? 0 "arping (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 arping -q -b -c 1 -w 5 -s $sip2 -I eth0.$vid2 $tip2"
+ log_test $? 0 "arping (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 2
+ log_test $? 0 "ARP suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 5
+ log_test $? 0 "ARP suppression (VLAN $vid2)"
+}
+
+neigh_vlan_suppress_ns()
+{
+ local vid1=10
+ local vid2=20
+ local saddr1=2001:db8:1::1
+ local saddr2=2001:db8:2::1
+ local daddr1=2001:db8:1::2
+ local daddr2=2001:db8:2::2
+ local maddr=ff02::1:ff00:2
+ local h2_mac1
+ local h2_mac2
+
+ echo
+ echo "Per-{Port, VLAN} NS suppression"
+ echo "-------------------------------"
+
+ run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
+ run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto ipv6 flower indev swp1 ip_proto icmpv6 dst_ip $maddr src_ip $saddr1 type 135 code 0 action pass"
+ run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 102 proto ipv6 flower indev swp1 ip_proto icmpv6 dst_ip $maddr src_ip $saddr2 type 135 code 0 action pass"
+
+ h2_mac1=$(ip -n $h2 -j -p link show eth0.$vid1 | jq -r '.[]["address"]')
+ h2_mac2=$(ip -n $h2 -j -p link show eth0.$vid2 | jq -r '.[]["address"]')
+ run_cmd "bridge -n $sw1 fdb replace $h2_mac1 dev vx0 master static vlan $vid1"
+ run_cmd "bridge -n $sw1 fdb replace $h2_mac2 dev vx0 master static vlan $vid2"
+ run_cmd "ip -n $sw1 neigh replace $daddr1 lladdr $h2_mac1 nud permanent dev br0.$vid1"
+ run_cmd "ip -n $sw1 neigh replace $daddr2 lladdr $h2_mac2 nud permanent dev br0.$vid2"
+
+ # Enable per-{Port, VLAN} neighbor suppression and check that NS
+ # messages are not suppressed and that ND messages are received.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress on\""
+ log_test $? 0 "\"neigh_vlan_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
+ log_test $? 0 "ndisc6 (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
+ log_test $? 0 "ndisc6 (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "NS suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 1
+ log_test $? 0 "NS suppression (VLAN $vid2)"
+
+ # Enable neighbor suppression on VLAN 10 and check that only on this
+ # VLAN NS messages are suppressed.
+ run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on (VLAN $vid1)"
+ run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid2 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid2)"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
+ log_test $? 0 "ndisc6 (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
+ log_test $? 0 "ndisc6 (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "NS suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 2
+ log_test $? 0 "NS suppression (VLAN $vid2)"
+
+ # Enable neighbor suppression on the port and check that it has no
+ # effect compared to previous state.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
+ log_test $? 0 "ndisc6 (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
+ log_test $? 0 "ndisc6 (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "NS suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 3
+ log_test $? 0 "NS suppression (VLAN $vid2)"
+
+ # Disable neighbor suppression on the port and check that it has no
+ # effect compared to previous state.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress off"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
+ log_test $? 0 "ndisc6 (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
+ log_test $? 0 "ndisc6 (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 1
+ log_test $? 0 "NS suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 4
+ log_test $? 0 "NS suppression (VLAN $vid2)"
+
+ # Disable neighbor suppression on VLAN 10 and check that NS messages
+ # are no longer suppressed on this VLAN.
+ run_cmd "bridge -n $sw1 vlan set vid $vid1 dev vx0 neigh_suppress off"
+ run_cmd "bridge -n $sw1 -d vlan show dev vx0 vid $vid1 | grep \"neigh_suppress off\""
+ log_test $? 0 "\"neigh_suppress\" is off (VLAN $vid1)"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
+ log_test $? 0 "ndisc6 (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
+ log_test $? 0 "ndisc6 (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 2
+ log_test $? 0 "NS suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 5
+ log_test $? 0 "NS suppression (VLAN $vid2)"
+
+ # Disable per-{Port, VLAN} neighbor suppression, enable neighbor
+ # suppression on the port and check that on both VLANs NS messages are
+ # suppressed.
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_vlan_suppress off"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_vlan_suppress off\""
+ log_test $? 0 "\"neigh_vlan_suppress\" is off"
+
+ run_cmd "bridge -n $sw1 link set dev vx0 neigh_suppress on"
+ run_cmd "bridge -n $sw1 -d link show dev vx0 | grep \"neigh_suppress on\""
+ log_test $? 0 "\"neigh_suppress\" is on"
+
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr1 -w 5000 $daddr1 eth0.$vid1"
+ log_test $? 0 "ndisc6 (VLAN $vid1)"
+ run_cmd "ip netns exec $h1 ndisc6 -q -r 1 -s $saddr2 -w 5000 $daddr2 eth0.$vid2"
+ log_test $? 0 "ndisc6 (VLAN $vid2)"
+
+ tc_check_packets $sw1 "dev vx0 egress" 101 2
+ log_test $? 0 "NS suppression (VLAN $vid1)"
+ tc_check_packets $sw1 "dev vx0 egress" 102 5
+ log_test $? 0 "NS suppression (VLAN $vid2)"
+}
+
+################################################################################
+# 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 tc)" ]; then
+ echo "SKIP: Could not run test without tc tool"
+ exit $ksft_skip
+fi
+
+if [ ! -x "$(command -v arping)" ]; then
+ echo "SKIP: Could not run test without arping tool"
+ exit $ksft_skip
+fi
+
+if [ ! -x "$(command -v ndisc6)" ]; then
+ echo "SKIP: Could not run test without ndisc6 tool"
+ exit $ksft_skip
+fi
+
+if [ ! -x "$(command -v jq)" ]; then
+ echo "SKIP: Could not run test without jq tool"
+ exit $ksft_skip
+fi
+
+bridge link help 2>&1 | grep -q "neigh_vlan_suppress"
+if [ $? -ne 0 ]; then
+ echo "SKIP: iproute2 bridge too old, missing per-VLAN neighbor suppression support"
+ exit $ksft_skip
+fi
+
+# Start clean.
+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
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.