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selftests: forwarding: Add layer 2 miss test cases
Add test cases to verify that the bridge driver correctly marks layer 2 misses only when it should and that the flower classifier can match on this metadata. Example output: # ./tc_flower_l2_miss.sh TEST: L2 miss - Unicast [ OK ] TEST: L2 miss - Multicast (IPv4) [ OK ] TEST: L2 miss - Multicast (IPv6) [ OK ] TEST: L2 miss - Link-local multicast (IPv4) [ OK ] TEST: L2 miss - Link-local multicast (IPv6) [ OK ] TEST: L2 miss - Broadcast [ OK ] Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ido Schimmel
Jakub Kicinski
parent
caa4c58ab5
commit
8c33266ae2
@ -83,6 +83,7 @@ TEST_PROGS = bridge_igmp.sh \
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tc_chains.sh \
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tc_flower_router.sh \
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tc_flower.sh \
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tc_flower_l2_miss.sh \
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tc_mpls_l2vpn.sh \
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tc_police.sh \
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tc_shblocks.sh \
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350
tools/testing/selftests/net/forwarding/tc_flower_l2_miss.sh
Executable file
350
tools/testing/selftests/net/forwarding/tc_flower_l2_miss.sh
Executable file
@ -0,0 +1,350 @@
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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) |
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# | + $h1 | | $h2 + |
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# | | 192.0.2.1/28 | | 192.0.2.2/28 | |
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# | | 2001:db8:1::1/64 | | 2001:db8:1::2/64 | |
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# +----|------------------+ +------------------|---+
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# | |
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# +----|-------------------------------------------------------------------|---+
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# | SW | | |
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# | +-|-------------------------------------------------------------------|-+ |
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# | | + $swp1 BR $swp2 + | |
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# | +-----------------------------------------------------------------------+ |
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# +----------------------------------------------------------------------------+
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ALL_TESTS="
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test_l2_miss_unicast
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test_l2_miss_multicast
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test_l2_miss_ll_multicast
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test_l2_miss_broadcast
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"
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NUM_NETIFS=4
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source lib.sh
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source tc_common.sh
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h1_create()
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{
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simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64
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}
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h1_destroy()
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{
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simple_if_fini $h1 192.0.2.1/28 2001:db8:1::1/64
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}
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h2_create()
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{
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simple_if_init $h2 192.0.2.2/28 2001:db8:1::2/64
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}
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h2_destroy()
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{
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simple_if_fini $h2 192.0.2.2/28 2001:db8:1::2/64
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}
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switch_create()
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{
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ip link add name br1 up type bridge
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ip link set dev $swp1 master br1
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ip link set dev $swp1 up
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ip link set dev $swp2 master br1
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ip link set dev $swp2 up
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tc qdisc add dev $swp2 clsact
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}
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switch_destroy()
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{
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tc qdisc del dev $swp2 clsact
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ip link set dev $swp2 down
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ip link set dev $swp2 nomaster
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ip link set dev $swp1 down
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ip link set dev $swp1 nomaster
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ip link del dev br1
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}
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test_l2_miss_unicast()
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{
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local dmac=00:01:02:03:04:05
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local dip=192.0.2.2
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local sip=192.0.2.1
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RET=0
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# Unknown unicast.
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tc filter add dev $swp2 egress protocol ipv4 handle 101 pref 1 \
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flower indev $swp1 l2_miss true dst_mac $dmac src_ip $sip \
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dst_ip $dip action pass
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# Known unicast.
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tc filter add dev $swp2 egress protocol ipv4 handle 102 pref 1 \
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flower indev $swp1 l2_miss false dst_mac $dmac src_ip $sip \
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dst_ip $dip action pass
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# Before adding FDB entry.
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$MZ $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 1
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check_err $? "Unknown unicast filter was not hit before adding FDB entry"
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tc_check_packets "dev $swp2 egress" 102 0
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check_err $? "Known unicast filter was hit before adding FDB entry"
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# Adding FDB entry.
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bridge fdb replace $dmac dev $swp2 master static
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$MZ $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 1
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check_err $? "Unknown unicast filter was hit after adding FDB entry"
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tc_check_packets "dev $swp2 egress" 102 1
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check_err $? "Known unicast filter was not hit after adding FDB entry"
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# Deleting FDB entry.
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bridge fdb del $dmac dev $swp2 master static
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$MZ $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 2
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check_err $? "Unknown unicast filter was not hit after deleting FDB entry"
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tc_check_packets "dev $swp2 egress" 102 1
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check_err $? "Known unicast filter was hit after deleting FDB entry"
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tc filter del dev $swp2 egress protocol ipv4 pref 1 handle 102 flower
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tc filter del dev $swp2 egress protocol ipv4 pref 1 handle 101 flower
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log_test "L2 miss - Unicast"
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}
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test_l2_miss_multicast_common()
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{
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local proto=$1; shift
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local sip=$1; shift
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local dip=$1; shift
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local mode=$1; shift
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local name=$1; shift
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RET=0
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# Unregistered multicast.
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tc filter add dev $swp2 egress protocol $proto handle 101 pref 1 \
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flower indev $swp1 l2_miss true src_ip $sip dst_ip $dip \
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action pass
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# Registered multicast.
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tc filter add dev $swp2 egress protocol $proto handle 102 pref 1 \
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flower indev $swp1 l2_miss false src_ip $sip dst_ip $dip \
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action pass
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# Before adding MDB entry.
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$MZ $mode $h1 -t ip -A $sip -B $dip -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 1
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check_err $? "Unregistered multicast filter was not hit before adding MDB entry"
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tc_check_packets "dev $swp2 egress" 102 0
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check_err $? "Registered multicast filter was hit before adding MDB entry"
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# Adding MDB entry.
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bridge mdb replace dev br1 port $swp2 grp $dip permanent
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$MZ $mode $h1 -t ip -A $sip -B $dip -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 1
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check_err $? "Unregistered multicast filter was hit after adding MDB entry"
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tc_check_packets "dev $swp2 egress" 102 1
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check_err $? "Registered multicast filter was not hit after adding MDB entry"
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# Deleting MDB entry.
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bridge mdb del dev br1 port $swp2 grp $dip
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$MZ $mode $h1 -t ip -A $sip -B $dip -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 2
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check_err $? "Unregistered multicast filter was not hit after deleting MDB entry"
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tc_check_packets "dev $swp2 egress" 102 1
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check_err $? "Registered multicast filter was hit after deleting MDB entry"
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tc filter del dev $swp2 egress protocol $proto pref 1 handle 102 flower
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tc filter del dev $swp2 egress protocol $proto pref 1 handle 101 flower
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log_test "L2 miss - Multicast ($name)"
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}
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test_l2_miss_multicast_ipv4()
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{
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local proto="ipv4"
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local sip=192.0.2.1
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local dip=239.1.1.1
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local mode="-4"
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local name="IPv4"
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test_l2_miss_multicast_common $proto $sip $dip $mode $name
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}
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test_l2_miss_multicast_ipv6()
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{
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local proto="ipv6"
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local sip=2001:db8:1::1
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local dip=ff0e::1
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local mode="-6"
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local name="IPv6"
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test_l2_miss_multicast_common $proto $sip $dip $mode $name
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}
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test_l2_miss_multicast()
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{
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# Configure $swp2 as a multicast router port so that it will forward
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# both registered and unregistered multicast traffic.
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bridge link set dev $swp2 mcast_router 2
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# Forwarding according to MDB entries only takes place when the bridge
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# detects that there is a valid querier in the network. Set the bridge
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# as the querier and assign it a valid IPv6 link-local address to be
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# used as the source address for MLD queries.
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ip link set dev br1 type bridge mcast_querier 1
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ip -6 address add fe80::1/64 nodad dev br1
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# Wait the default Query Response Interval (10 seconds) for the bridge
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# to determine that there are no other queriers in the network.
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sleep 10
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test_l2_miss_multicast_ipv4
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test_l2_miss_multicast_ipv6
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ip -6 address del fe80::1/64 dev br1
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ip link set dev br1 type bridge mcast_querier 0
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bridge link set dev $swp2 mcast_router 1
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}
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test_l2_miss_multicast_common2()
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{
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local name=$1; shift
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local dmac=$1; shift
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local dip=224.0.0.1
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local sip=192.0.2.1
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}
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test_l2_miss_ll_multicast_common()
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{
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local proto=$1; shift
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local dmac=$1; shift
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local sip=$1; shift
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local dip=$1; shift
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local mode=$1; shift
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local name=$1; shift
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RET=0
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tc filter add dev $swp2 egress protocol $proto handle 101 pref 1 \
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flower indev $swp1 l2_miss true dst_mac $dmac src_ip $sip \
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dst_ip $dip action pass
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$MZ $mode $h1 -a own -b $dmac -t ip -A $sip -B $dip -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 1
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check_err $? "Filter was not hit"
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tc filter del dev $swp2 egress protocol $proto pref 1 handle 101 flower
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log_test "L2 miss - Link-local multicast ($name)"
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}
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test_l2_miss_ll_multicast_ipv4()
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{
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local proto=ipv4
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local dmac=01:00:5e:00:00:01
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local sip=192.0.2.1
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local dip=224.0.0.1
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local mode="-4"
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local name="IPv4"
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test_l2_miss_ll_multicast_common $proto $dmac $sip $dip $mode $name
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}
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test_l2_miss_ll_multicast_ipv6()
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{
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local proto=ipv6
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local dmac=33:33:00:00:00:01
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local sip=2001:db8:1::1
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local dip=ff02::1
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local mode="-6"
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local name="IPv6"
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test_l2_miss_ll_multicast_common $proto $dmac $sip $dip $mode $name
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}
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test_l2_miss_ll_multicast()
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{
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test_l2_miss_ll_multicast_ipv4
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test_l2_miss_ll_multicast_ipv6
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}
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test_l2_miss_broadcast()
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{
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local dmac=ff:ff:ff:ff:ff:ff
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local smac=00:01:02:03:04:05
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RET=0
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tc filter add dev $swp2 egress protocol all handle 101 pref 1 \
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flower l2_miss true dst_mac $dmac src_mac $smac \
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action pass
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tc filter add dev $swp2 egress protocol all handle 102 pref 1 \
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flower l2_miss false dst_mac $dmac src_mac $smac \
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action pass
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$MZ $h1 -a $smac -b $dmac -c 1 -p 100 -q
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tc_check_packets "dev $swp2 egress" 101 0
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check_err $? "L2 miss filter was hit when should not"
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tc_check_packets "dev $swp2 egress" 102 1
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check_err $? "L2 no miss filter was not hit when should"
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tc filter del dev $swp2 egress protocol all pref 1 handle 102 flower
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tc filter del dev $swp2 egress protocol all pref 1 handle 101 flower
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log_test "L2 miss - Broadcast"
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}
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setup_prepare()
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{
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h1=${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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vrf_prepare
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h1_create
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h2_create
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switch_create
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}
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cleanup()
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{
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pre_cleanup
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switch_destroy
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h2_destroy
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h1_destroy
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vrf_cleanup
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}
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trap cleanup EXIT
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setup_prepare
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setup_wait
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tests_run
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exit $EXIT_STATUS
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