forked from Minki/linux
ca059af852
In case a packet is routed using a multicast route whose specified ingress interface does not match the interface from which the packet was received, the packet is dropped. Add IPv4 and IPv6 test cases for above mentioned scenario. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
417 lines
11 KiB
Bash
Executable File
417 lines
11 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# +------------------+
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# | H1 (v$h1) |
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# | 2001:db8:1::2/64 |
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# | 198.51.100.2/28 |
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# | $h1 + |
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# +-------------|----+
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# |
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# +-------------|-------------------------------+
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# | SW1 | |
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# | $rp1 + |
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# | 198.51.100.1/28 |
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# | 2001:db8:1::1/64 |
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# | |
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# | 2001:db8:2::1/64 2001:db8:3::1/64 |
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# | 198.51.100.17/28 198.51.100.33/28 |
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# | $rp2 + $rp3 + |
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# +--------------|--------------------------|---+
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# | |
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# | |
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# +--------------|---+ +--------------|---+
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# | H2 (v$h2) | | | H3 (v$h3) | |
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# | $h2 + | | $h3 + |
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# | 198.51.100.18/28 | | 198.51.100.34/28 |
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# | 2001:db8:2::2/64 | | 2001:db8:3::2/64 |
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# +------------------+ +------------------+
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#
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ALL_TESTS="mcast_v4 mcast_v6 rpf_v4 rpf_v6"
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NUM_NETIFS=6
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source lib.sh
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source tc_common.sh
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require_command $MCD
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require_command $MC_CLI
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table_name=selftests
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h1_create()
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{
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simple_if_init $h1 198.51.100.2/28 2001:db8:1::2/64
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ip route add 198.51.100.16/28 vrf v$h1 nexthop via 198.51.100.1
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ip route add 198.51.100.32/28 vrf v$h1 nexthop via 198.51.100.1
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ip route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::1
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ip route add 2001:db8:3::/64 vrf v$h1 nexthop via 2001:db8:1::1
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tc qdisc add dev $h1 ingress
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}
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h1_destroy()
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{
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tc qdisc del dev $h1 ingress
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ip route del 2001:db8:3::/64 vrf v$h1
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ip route del 2001:db8:2::/64 vrf v$h1
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ip route del 198.51.100.32/28 vrf v$h1
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ip route del 198.51.100.16/28 vrf v$h1
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simple_if_fini $h1 198.51.100.2/28 2001:db8:1::2/64
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}
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h2_create()
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{
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simple_if_init $h2 198.51.100.18/28 2001:db8:2::2/64
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ip route add 198.51.100.0/28 vrf v$h2 nexthop via 198.51.100.17
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ip route add 198.51.100.32/28 vrf v$h2 nexthop via 198.51.100.17
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ip route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::1
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ip route add 2001:db8:3::/64 vrf v$h2 nexthop via 2001:db8:2::1
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tc qdisc add dev $h2 ingress
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}
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h2_destroy()
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{
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tc qdisc del dev $h2 ingress
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ip route del 2001:db8:3::/64 vrf v$h2
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ip route del 2001:db8:1::/64 vrf v$h2
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ip route del 198.51.100.32/28 vrf v$h2
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ip route del 198.51.100.0/28 vrf v$h2
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simple_if_fini $h2 198.51.100.18/28 2001:db8:2::2/64
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}
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h3_create()
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{
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simple_if_init $h3 198.51.100.34/28 2001:db8:3::2/64
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ip route add 198.51.100.0/28 vrf v$h3 nexthop via 198.51.100.33
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ip route add 198.51.100.16/28 vrf v$h3 nexthop via 198.51.100.33
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ip route add 2001:db8:1::/64 vrf v$h3 nexthop via 2001:db8:3::1
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ip route add 2001:db8:2::/64 vrf v$h3 nexthop via 2001:db8:3::1
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tc qdisc add dev $h3 ingress
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}
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h3_destroy()
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{
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tc qdisc del dev $h3 ingress
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ip route del 2001:db8:2::/64 vrf v$h3
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ip route del 2001:db8:1::/64 vrf v$h3
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ip route del 198.51.100.16/28 vrf v$h3
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ip route del 198.51.100.0/28 vrf v$h3
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simple_if_fini $h3 198.51.100.34/28 2001:db8:3::2/64
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}
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router_create()
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{
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ip link set dev $rp1 up
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ip link set dev $rp2 up
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ip link set dev $rp3 up
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ip address add 198.51.100.1/28 dev $rp1
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ip address add 198.51.100.17/28 dev $rp2
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ip address add 198.51.100.33/28 dev $rp3
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ip address add 2001:db8:1::1/64 dev $rp1
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ip address add 2001:db8:2::1/64 dev $rp2
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ip address add 2001:db8:3::1/64 dev $rp3
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tc qdisc add dev $rp3 ingress
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}
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router_destroy()
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{
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tc qdisc del dev $rp3 ingress
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ip address del 2001:db8:3::1/64 dev $rp3
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ip address del 2001:db8:2::1/64 dev $rp2
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ip address del 2001:db8:1::1/64 dev $rp1
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ip address del 198.51.100.33/28 dev $rp3
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ip address del 198.51.100.17/28 dev $rp2
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ip address del 198.51.100.1/28 dev $rp1
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ip link set dev $rp3 down
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ip link set dev $rp2 down
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ip link set dev $rp1 down
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}
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start_mcd()
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{
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SMCROUTEDIR="$(mktemp -d)"
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for ((i = 1; i <= $NUM_NETIFS; ++i)); do
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echo "phyint ${NETIFS[p$i]} enable" >> \
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$SMCROUTEDIR/$table_name.conf
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done
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$MCD -N -I $table_name -f $SMCROUTEDIR/$table_name.conf \
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-P $SMCROUTEDIR/$table_name.pid
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}
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kill_mcd()
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{
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pkill $MCD
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rm -rf $SMCROUTEDIR
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}
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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rp1=${NETIFS[p2]}
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rp2=${NETIFS[p3]}
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h2=${NETIFS[p4]}
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rp3=${NETIFS[p5]}
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h3=${NETIFS[p6]}
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start_mcd
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vrf_prepare
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h1_create
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h2_create
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h3_create
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router_create
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forwarding_enable
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}
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cleanup()
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{
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pre_cleanup
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forwarding_restore
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router_destroy
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h3_destroy
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h2_destroy
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h1_destroy
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vrf_cleanup
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kill_mcd
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}
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create_mcast_sg()
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{
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local if_name=$1; shift
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local s_addr=$1; shift
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local mcast=$1; shift
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local dest_ifs=${@}
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$MC_CLI -I $table_name add $if_name $s_addr $mcast $dest_ifs
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}
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delete_mcast_sg()
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{
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local if_name=$1; shift
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local s_addr=$1; shift
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local mcast=$1; shift
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local dest_ifs=${@}
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$MC_CLI -I $table_name remove $if_name $s_addr $mcast $dest_ifs
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}
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mcast_v4()
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{
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# Add two interfaces to an MC group, send a packet to the MC group and
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# verify packets are received on both. Then delete the route and verify
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# packets are no longer received.
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RET=0
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tc filter add dev $h2 ingress protocol ip pref 1 handle 122 flower \
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dst_ip 225.1.2.3 action drop
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tc filter add dev $h3 ingress protocol ip pref 1 handle 133 flower \
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dst_ip 225.1.2.3 action drop
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create_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
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# Send frames with the corresponding L2 destination address.
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$MZ $h1 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
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-A 198.51.100.2 -B 225.1.2.3 -q
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tc_check_packets "dev $h2 ingress" 122 5
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check_err $? "Multicast not received on first host"
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tc_check_packets "dev $h3 ingress" 133 5
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check_err $? "Multicast not received on second host"
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delete_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
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$MZ $h1 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
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-A 198.51.100.2 -B 225.1.2.3 -q
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tc_check_packets "dev $h2 ingress" 122 5
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check_err $? "Multicast received on host although deleted"
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tc_check_packets "dev $h3 ingress" 133 5
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check_err $? "Multicast received on second host although deleted"
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tc filter del dev $h3 ingress protocol ip pref 1 handle 133 flower
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tc filter del dev $h2 ingress protocol ip pref 1 handle 122 flower
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log_test "mcast IPv4"
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}
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mcast_v6()
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{
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# Add two interfaces to an MC group, send a packet to the MC group and
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# verify packets are received on both. Then delete the route and verify
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# packets are no longer received.
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RET=0
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tc filter add dev $h2 ingress protocol ipv6 pref 1 handle 122 flower \
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dst_ip ff0e::3 action drop
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tc filter add dev $h3 ingress protocol ipv6 pref 1 handle 133 flower \
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dst_ip ff0e::3 action drop
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create_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
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# Send frames with the corresponding L2 destination address.
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$MZ $h1 -6 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 \
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-b 33:33:00:00:00:03 -A 2001:db8:1::2 -B ff0e::3 -q
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tc_check_packets "dev $h2 ingress" 122 5
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check_err $? "Multicast not received on first host"
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tc_check_packets "dev $h3 ingress" 133 5
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check_err $? "Multicast not received on second host"
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delete_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
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$MZ $h1 -6 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 \
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-b 33:33:00:00:00:03 -A 2001:db8:1::2 -B ff0e::3 -q
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tc_check_packets "dev $h2 ingress" 122 5
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check_err $? "Multicast received on first host although deleted"
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tc_check_packets "dev $h3 ingress" 133 5
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check_err $? "Multicast received on second host although deleted"
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tc filter del dev $h3 ingress protocol ipv6 pref 1 handle 133 flower
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tc filter del dev $h2 ingress protocol ipv6 pref 1 handle 122 flower
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log_test "mcast IPv6"
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}
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rpf_v4()
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{
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# Add a multicast route from first router port to the other two. Send
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# matching packets and test that both hosts receive them. Then, send
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# the same packets via the third router port and test that they do not
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# reach any host due to RPF check. A filter with 'skip_hw' is added to
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# test that devices capable of multicast routing offload trap those
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# packets. The filter is essentialy a NOP in other scenarios.
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RET=0
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tc filter add dev $h1 ingress protocol ip pref 1 handle 1 flower \
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dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
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tc filter add dev $h2 ingress protocol ip pref 1 handle 1 flower \
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dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
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tc filter add dev $h3 ingress protocol ip pref 1 handle 1 flower \
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dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
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tc filter add dev $rp3 ingress protocol ip pref 1 handle 1 flower \
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skip_hw dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action pass
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create_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
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$MZ $h1 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
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-a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
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-A 198.51.100.2 -B 225.1.2.3 -q
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tc_check_packets "dev $h2 ingress" 1 5
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check_err $? "Multicast not received on first host"
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tc_check_packets "dev $h3 ingress" 1 5
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check_err $? "Multicast not received on second host"
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$MZ $h3 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
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-a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
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-A 198.51.100.2 -B 225.1.2.3 -q
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tc_check_packets "dev $h1 ingress" 1 0
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check_err $? "Multicast received on first host when should not"
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tc_check_packets "dev $h2 ingress" 1 5
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check_err $? "Multicast received on second host when should not"
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tc_check_packets "dev $rp3 ingress" 1 5
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check_err $? "Packets not trapped due to RPF check"
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delete_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3
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tc filter del dev $rp3 ingress protocol ip pref 1 handle 1 flower
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tc filter del dev $h3 ingress protocol ip pref 1 handle 1 flower
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tc filter del dev $h2 ingress protocol ip pref 1 handle 1 flower
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tc filter del dev $h1 ingress protocol ip pref 1 handle 1 flower
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log_test "RPF IPv4"
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}
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rpf_v6()
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{
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RET=0
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tc filter add dev $h1 ingress protocol ipv6 pref 1 handle 1 flower \
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dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
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tc filter add dev $h2 ingress protocol ipv6 pref 1 handle 1 flower \
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dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
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tc filter add dev $h3 ingress protocol ipv6 pref 1 handle 1 flower \
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dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
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tc filter add dev $rp3 ingress protocol ipv6 pref 1 handle 1 flower \
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skip_hw dst_ip ff0e::3 ip_proto udp dst_port 12345 action pass
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create_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
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$MZ $h1 -6 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
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-a 00:11:22:33:44:55 -b 33:33:00:00:00:03 \
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-A 2001:db8:1::2 -B ff0e::3 -q
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tc_check_packets "dev $h2 ingress" 1 5
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check_err $? "Multicast not received on first host"
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tc_check_packets "dev $h3 ingress" 1 5
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check_err $? "Multicast not received on second host"
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$MZ $h3 -6 -c 5 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
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-a 00:11:22:33:44:55 -b 33:33:00:00:00:03 \
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-A 2001:db8:1::2 -B ff0e::3 -q
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tc_check_packets "dev $h1 ingress" 1 0
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check_err $? "Multicast received on first host when should not"
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tc_check_packets "dev $h2 ingress" 1 5
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check_err $? "Multicast received on second host when should not"
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tc_check_packets "dev $rp3 ingress" 1 5
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check_err $? "Packets not trapped due to RPF check"
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delete_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3
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tc filter del dev $rp3 ingress protocol ipv6 pref 1 handle 1 flower
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tc filter del dev $h3 ingress protocol ipv6 pref 1 handle 1 flower
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tc filter del dev $h2 ingress protocol ipv6 pref 1 handle 1 flower
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tc filter del dev $h1 ingress protocol ipv6 pref 1 handle 1 flower
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log_test "RPF IPv6"
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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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