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selftests: forwarding: Add test for BR_BOOLOPT_FDB_LOCAL_VLAN_0
Add a selftest to check the operation of this newly-introduced bridge option. Signed-off-by: Petr Machata <petrm@nvidia.com> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/62294f96884ab5d341648eef21243fa099a2dee5.1757004393.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Petr Machata
Jakub Kicinski
parent
fa57032941
commit
dbd9134792
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@ -5,6 +5,7 @@ TEST_PROGS = \
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bridge_fdb_learning_limit.sh \
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bridge_igmp.sh \
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bridge_locked_port.sh \
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bridge_fdb_local_vlan_0.sh \
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bridge_mdb.sh \
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bridge_mdb_host.sh \
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bridge_mdb_max.sh \
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374
tools/testing/selftests/net/forwarding/bridge_fdb_local_vlan_0.sh
Executable file
374
tools/testing/selftests/net/forwarding/bridge_fdb_local_vlan_0.sh
Executable file
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@ -0,0 +1,374 @@
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# +-----------------------+ +-----------------------+ +-----------------------+
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# | H1 (vrf) | | H2 (vrf) | | H3 (vrf) |
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# | + $h1 | | + $h2 | | + $h3 |
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# | | 192.0.2.1/28 | | | 192.0.2.2/28 | | | 192.0.2.18/28 |
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# | | 2001:db8:1::1/64 | | | 2001:db8:1::2/64 | | | 2001:db8:2::2/64 |
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# | | | | | | | | |
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# +----|------------------+ +----|------------------+ +----|------------------+
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# | | |
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# +----|-------------------------|-------------------------|------------------+
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# | +--|-------------------------|------------------+ | |
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# | | + $swp1 + $swp2 | + $swp3 |
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# | | | 192.0.2.17/28 |
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# | | BR1 (802.1q) | 2001:db8:2::1/64 |
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# | | 192.0.2.3/28 | |
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# | | 2001:db8:1::3/64 | |
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# | +-----------------------------------------------+ SW |
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# +---------------------------------------------------------------------------+
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#
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#shellcheck disable=SC2317 # SC doesn't see our uses of functions.
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#shellcheck disable=SC2034 # ... and global variables
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ALL_TESTS="
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test_d_no_sharing
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test_d_sharing
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test_q_no_sharing
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test_q_sharing
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"
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NUM_NETIFS=6
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source lib.sh
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pMAC=00:11:22:33:44:55
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bMAC=00:11:22:33:44:66
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mMAC=00:11:22:33:44:77
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xMAC=00:11:22:33:44:88
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host_create()
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{
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local h=$1; shift
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local ipv4=$1; shift
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local ipv6=$1; shift
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simple_if_init "$h" "$ipv4" "$ipv6"
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defer simple_if_fini "$h" "$ipv4" "$ipv6"
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ip_route_add vrf "v$h" 192.0.2.16/28 nexthop via 192.0.2.3
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ip_route_add vrf "v$h" 2001:db8:2::/64 nexthop via 2001:db8:1::3
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}
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h3_create()
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{
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simple_if_init "$h3" 192.0.2.18/28 2001:db8:2::2/64
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defer simple_if_fini "$h3" 192.0.2.18/28 2001:db8:2::2/64
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ip_route_add vrf "v$h3" 192.0.2.0/28 nexthop via 192.0.2.17
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ip_route_add vrf "v$h3" 2001:db8:1::/64 nexthop via 2001:db8:2::1
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tc qdisc add dev "$h3" clsact
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defer tc qdisc del dev "$h3" clsact
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tc filter add dev "$h3" ingress proto ip pref 104 \
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flower skip_hw ip_proto udp dst_port 4096 \
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action pass
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defer tc filter del dev "$h3" ingress proto ip pref 104
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tc qdisc add dev "$h2" clsact
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defer tc qdisc del dev "$h2" clsact
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tc filter add dev "$h2" ingress proto ip pref 104 \
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flower skip_hw ip_proto udp dst_port 4096 \
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action pass
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defer tc filter del dev "$h2" ingress proto ip pref 104
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}
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switch_create()
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{
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ip_link_set_up "$swp1"
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ip_link_set_up "$swp2"
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ip_addr_add "$swp3" 192.0.2.17/28
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ip_addr_add "$swp3" 2001:db8:2::1/64
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ip_link_set_up "$swp3"
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}
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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swp1=${NETIFS[p2]}
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swp2=${NETIFS[p3]}
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h2=${NETIFS[p4]}
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swp3=${NETIFS[p5]}
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h3=${NETIFS[p6]}
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vrf_prepare
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defer vrf_cleanup
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forwarding_enable
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defer forwarding_restore
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host_create "$h1" 192.0.2.1/28 2001:db8:1::1/64
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host_create "$h2" 192.0.2.2/28 2001:db8:1::2/64
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h3_create
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switch_create
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}
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adf_bridge_create()
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{
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local dev
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local mac
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ip_link_add br up type bridge vlan_default_pvid 0 "$@"
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mac=$(mac_get br)
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ip_addr_add br 192.0.2.3/28
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ip_addr_add br 2001:db8:1::3/64
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bridge_vlan_add dev br vid 1 pvid untagged self
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bridge_vlan_add dev br vid 2 self
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bridge_vlan_add dev br vid 3 self
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for dev in "$swp1" "$swp2"; do
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ip_link_set_master "$dev" br
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bridge_vlan_add dev "$dev" vid 1 pvid untagged
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bridge_vlan_add dev "$dev" vid 2
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bridge_vlan_add dev "$dev" vid 3
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done
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ip_link_set_addr br "$mac"
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}
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check_fdb_local_vlan_0_support()
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{
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if ip_link_add XXbr up type bridge vlan_filtering 1 fdb_local_vlan_0 1 \
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&>/dev/null; then
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return 0
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fi
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log_test_skip "FDB sharing" \
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"iproute 2 or the kernel do not support fdb_local_vlan_0"
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}
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check_mac_presence()
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{
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local should_fail=$1; shift
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local dev=$1; shift
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local vlan=$1; shift
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local mac
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mac=$(mac_get "$dev")
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if ((vlan == 0)); then
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vlan=null
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fi
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bridge -j fdb show dev "$dev" |
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jq -e --arg mac "$mac" --argjson vlan "$vlan" \
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'.[] | select(.mac == $mac) | select(.vlan == $vlan)' > /dev/null
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check_err_fail "$should_fail" $? "FDB dev $dev vid $vlan addr $mac exists"
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}
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do_sharing_test()
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{
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local should_fail=$1; shift
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local what=$1; shift
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local dev
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RET=0
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for dev in "$swp1" "$swp2" br; do
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check_mac_presence 0 "$dev" 0
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check_mac_presence "$should_fail" "$dev" 1
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check_mac_presence "$should_fail" "$dev" 2
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check_mac_presence "$should_fail" "$dev" 3
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done
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log_test "$what"
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}
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do_end_to_end_test()
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{
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local mac=$1; shift
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local what=$1; shift
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local probe_dev=${1-$h3}; shift
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local expect=${1-10}; shift
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local t0
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local t1
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local dd
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RET=0
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# In mausezahn, use $dev MAC as the destination MAC. In the MAC sharing
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# context, that will cause an FDB miss on VLAN 1 and prompt a second
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# lookup in VLAN 0.
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t0=$(tc_rule_stats_get "$probe_dev" 104 ingress)
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$MZ "$h1" -c 10 -p 64 -a own -b "$mac" \
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-A 192.0.2.1 -B 192.0.2.18 -t udp "dp=4096,sp=2048" -q
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sleep 1
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t1=$(tc_rule_stats_get "$probe_dev" 104 ingress)
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dd=$((t1 - t0))
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((dd == expect))
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check_err $? "Expected $expect packets on $probe_dev got $dd"
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log_test "$what"
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}
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do_tests()
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{
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local should_fail=$1; shift
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local what=$1; shift
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local swp1_mac
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local br_mac
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swp1_mac=$(mac_get "$swp1")
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br_mac=$(mac_get br)
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do_sharing_test "$should_fail" "$what"
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do_end_to_end_test "$swp1_mac" "$what: end to end, $swp1 MAC"
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do_end_to_end_test "$br_mac" "$what: end to end, br MAC"
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}
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bridge_standard()
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{
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local vlan_filtering=$1; shift
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if ((vlan_filtering)); then
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echo 802.1q
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else
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echo 802.1d
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fi
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}
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nonexistent_fdb_test()
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{
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local vlan_filtering=$1; shift
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local standard
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standard=$(bridge_standard "$vlan_filtering")
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# We expect flooding, so $h2 should get the traffic.
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do_end_to_end_test "$xMAC" "$standard: Nonexistent FDB" "$h2"
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}
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misleading_fdb_test()
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{
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local vlan_filtering=$1; shift
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local standard
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standard=$(bridge_standard "$vlan_filtering")
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defer_scope_push
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# Add an FDB entry on VLAN 0. The lookup on VLAN-aware bridge
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# shouldn't pick this up even with fdb_local_vlan_0 enabled, so
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# the traffic should be flooded. This all holds on
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# vlan_filtering bridge, on non-vlan_filtering one the FDB entry
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# is expected to be found as usual, no flooding takes place.
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#
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# Adding only on VLAN 0 is a bit tricky, because bridge is
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# trying to be nice and interprets the request as if the FDB
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# should be added on each VLAN.
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bridge fdb add "$mMAC" dev "$swp1" master
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bridge fdb del "$mMAC" dev "$swp1" vlan 1 master
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bridge fdb del "$mMAC" dev "$swp1" vlan 2 master
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bridge fdb del "$mMAC" dev "$swp1" vlan 3 master
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local expect=$((vlan_filtering ? 10 : 0))
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do_end_to_end_test "$mMAC" \
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"$standard: Lookup of non-local MAC on VLAN 0" \
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"$h2" "$expect"
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defer_scope_pop
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}
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change_mac()
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{
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local dev=$1; shift
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local mac=$1; shift
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local cur_mac
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cur_mac=$(mac_get "$dev")
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log_info "Change $dev MAC $cur_mac -> $mac"
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ip_link_set_addr "$dev" "$mac"
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defer log_info "Change $dev MAC back"
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}
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do_test_no_sharing()
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{
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local vlan_filtering=$1; shift
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local standard
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standard=$(bridge_standard "$vlan_filtering")
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adf_bridge_create vlan_filtering "$vlan_filtering"
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setup_wait
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do_tests 0 "$standard, no FDB sharing"
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change_mac "$swp1" "$pMAC"
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change_mac br "$bMAC"
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do_tests 0 "$standard, no FDB sharing after MAC change"
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in_defer_scope check_fdb_local_vlan_0_support || return
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log_info "Set fdb_local_vlan_0=1"
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ip link set dev br type bridge fdb_local_vlan_0 1
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do_tests 1 "$standard, fdb sharing after toggle"
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}
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do_test_sharing()
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{
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local vlan_filtering=$1; shift
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local standard
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standard=$(bridge_standard "$vlan_filtering")
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in_defer_scope check_fdb_local_vlan_0_support || return
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adf_bridge_create vlan_filtering "$vlan_filtering" fdb_local_vlan_0 1
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setup_wait
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do_tests 1 "$standard, FDB sharing"
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nonexistent_fdb_test "$vlan_filtering"
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misleading_fdb_test "$vlan_filtering"
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change_mac "$swp1" "$pMAC"
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change_mac br "$bMAC"
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do_tests 1 "$standard, FDB sharing after MAC change"
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log_info "Set fdb_local_vlan_0=0"
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ip link set dev br type bridge fdb_local_vlan_0 0
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do_tests 0 "$standard, No FDB sharing after toggle"
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}
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test_d_no_sharing()
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{
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do_test_no_sharing 0
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}
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test_d_sharing()
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{
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do_test_sharing 0
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}
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test_q_no_sharing()
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{
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do_test_no_sharing 1
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}
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test_q_sharing()
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{
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do_test_sharing 1
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}
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trap cleanup EXIT
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setup_prepare
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tests_run
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