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Commit 6d4efada authored by Nir Dotan's avatar Nir Dotan Committed by David S. Miller
Browse files

selftests: forwarding: Add multicast routing test 

Introduce basic testing for both IPv4 and IPv6 multicast. The test creates
an (S,G) type route, sends traffic and verifies traffic arrives when the
route is present and then verifies traffic does not arrive after deleting
the route.
This test requires smcroute - https://github.com/troglobit/smcroute

 which
is a tool that allows creation of static multicast routes.

Signed-off-by: default avatarNir Dotan <nird@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cf7221a4

tools/testing/selftests/net/forwarding/lib.sh

+2 −0
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} 
PAUSE_ON_CLEANUP=${PAUSE_ON_CLEANUP:=no}

NETIF_TYPE=${NETIF_TYPE:=veth}

NETIF_CREATE=${NETIF_CREATE:=yes}

MCD=${MCD:=smcrouted}

MC_CLI=${MC_CLI:=smcroutectl}



relative_path="${BASH_SOURCE%/*}"

if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then

tools/testing/selftests/net/forwarding/router_multicast.sh

0 → 100755
+311 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



# +------------------+

# | H1 (v$h1)        |

# | 2001:db8:1::2/64 |

# | 198.51.100.2/28  |

# |         $h1 +    |

# +-------------|----+

#               |

# +-------------|-------------------------------+

# | SW1         |                               |

# |        $rp1 +                               |

# | 198.51.100.1/28                             |

# | 2001:db8:1::1/64                            |

# |                                             |

# | 2001:db8:2::1/64           2001:db8:3::1/64 |

# | 198.51.100.17/28           198.51.100.33/28 |

# |         $rp2 +                     $rp3 +   |

# +--------------|--------------------------|---+

#                |                          |

#                |                          |

# +--------------|---+       +--------------|---+

# | H2 (v$h2)    |   |       | H3 (v$h3)    |   |

# |          $h2 +   |       |          $h3 +   |

# | 198.51.100.18/28 |       | 198.51.100.34/28 |

# | 2001:db8:2::2/64 |       | 2001:db8:3::2/64 |

# +------------------+       +------------------+

#



ALL_TESTS="mcast_v4 mcast_v6"

NUM_NETIFS=6

source lib.sh

source tc_common.sh



require_command $MCD

require_command $MC_CLI

table_name=selftests



h1_create()

{

	simple_if_init $h1 198.51.100.2/28 2001:db8:1::2/64



	ip route add 198.51.100.16/28 vrf v$h1 nexthop via 198.51.100.1

	ip route add 198.51.100.32/28 vrf v$h1 nexthop via 198.51.100.1



	ip route add 2001:db8:2::/64 vrf v$h1 nexthop via 2001:db8:1::1

	ip route add 2001:db8:3::/64 vrf v$h1 nexthop via 2001:db8:1::1

}



h1_destroy()

{

	ip route del 2001:db8:3::/64 vrf v$h1

	ip route del 2001:db8:2::/64 vrf v$h1



	ip route del 198.51.100.32/28 vrf v$h1

	ip route del 198.51.100.16/28 vrf v$h1



	simple_if_fini $h1 198.51.100.2/28 2001:db8:1::2/64

}



h2_create()

{

	simple_if_init $h2 198.51.100.18/28 2001:db8:2::2/64



	ip route add 198.51.100.0/28 vrf v$h2 nexthop via 198.51.100.17

	ip route add 198.51.100.32/28 vrf v$h2 nexthop via 198.51.100.17



	ip route add 2001:db8:1::/64 vrf v$h2 nexthop via 2001:db8:2::1

	ip route add 2001:db8:3::/64 vrf v$h2 nexthop via 2001:db8:2::1



	tc qdisc add dev $h2 ingress

}



h2_destroy()

{

	tc qdisc del dev $h2 ingress



	ip route del 2001:db8:3::/64 vrf v$h2

	ip route del 2001:db8:1::/64 vrf v$h2



	ip route del 198.51.100.32/28 vrf v$h2

	ip route del 198.51.100.0/28 vrf v$h2



	simple_if_fini $h2 198.51.100.18/28 2001:db8:2::2/64

}



h3_create()

{

	simple_if_init $h3 198.51.100.34/28 2001:db8:3::2/64



	ip route add 198.51.100.0/28 vrf v$h3 nexthop via 198.51.100.33

	ip route add 198.51.100.16/28 vrf v$h3 nexthop via 198.51.100.33



	ip route add 2001:db8:1::/64 vrf v$h3 nexthop via 2001:db8:3::1

	ip route add 2001:db8:2::/64 vrf v$h3 nexthop via 2001:db8:3::1



	tc qdisc add dev $h3 ingress

}



h3_destroy()

{

	tc qdisc del dev $h3 ingress



	ip route del 2001:db8:2::/64 vrf v$h3

	ip route del 2001:db8:1::/64 vrf v$h3



	ip route del 198.51.100.16/28 vrf v$h3

	ip route del 198.51.100.0/28 vrf v$h3



	simple_if_fini $h3 198.51.100.34/28 2001:db8:3::2/64

}



router_create()

{

	ip link set dev $rp1 up

	ip link set dev $rp2 up

	ip link set dev $rp3 up



	ip address add 198.51.100.1/28 dev $rp1

	ip address add 198.51.100.17/28 dev $rp2

	ip address add 198.51.100.33/28 dev $rp3



	ip address add 2001:db8:1::1/64 dev $rp1

	ip address add 2001:db8:2::1/64 dev $rp2

	ip address add 2001:db8:3::1/64 dev $rp3

}



router_destroy()

{

	ip address del 2001:db8:3::1/64 dev $rp3

	ip address del 2001:db8:2::1/64 dev $rp2

	ip address del 2001:db8:1::1/64 dev $rp1



	ip address del 198.51.100.33/28 dev $rp3

	ip address del 198.51.100.17/28 dev $rp2

	ip address del 198.51.100.1/28 dev $rp1



	ip link set dev $rp3 down

	ip link set dev $rp2 down

	ip link set dev $rp1 down

}



start_mcd()

{

	SMCROUTEDIR="$(mktemp -d)"



	for ((i = 1; i <= $NUM_NETIFS; ++i)); do

		echo "phyint ${NETIFS[p$i]} enable" >> \

			$SMCROUTEDIR/$table_name.conf

	done



	$MCD -N -I $table_name -f $SMCROUTEDIR/$table_name.conf \

		-P $SMCROUTEDIR/$table_name.pid

}



kill_mcd()

{

	pkill $MCD

	rm -rf $SMCROUTEDIR

}



setup_prepare()

{

	h1=${NETIFS[p1]}

	rp1=${NETIFS[p2]}



	rp2=${NETIFS[p3]}

	h2=${NETIFS[p4]}



	rp3=${NETIFS[p5]}

	h3=${NETIFS[p6]}



	start_mcd



	vrf_prepare



	h1_create

	h2_create

	h3_create



	router_create



	forwarding_enable

}



cleanup()

{

	pre_cleanup



	forwarding_restore



	router_destroy



	h3_destroy

	h2_destroy

	h1_destroy



	vrf_cleanup



	kill_mcd

}



create_mcast_sg()

{

	local if_name=$1; shift

	local s_addr=$1; shift

	local mcast=$1; shift

	local dest_ifs=${@}



	$MC_CLI -I $table_name add $if_name $s_addr $mcast $dest_ifs

}



delete_mcast_sg()

{

	local if_name=$1; shift

	local s_addr=$1; shift

	local mcast=$1; shift

	local dest_ifs=${@}



        $MC_CLI -I $table_name remove $if_name $s_addr $mcast $dest_ifs

}



mcast_v4()

{

	# Add two interfaces to an MC group, send a packet to the MC group and

	# verify packets are received on both. Then delete the route and verify

	# packets are no longer received.



	RET=0



	tc filter add dev $h2 ingress protocol ip pref 1 handle 122 flower \

		dst_ip 225.1.2.3 action drop

	tc filter add dev $h3 ingress protocol ip pref 1 handle 133 flower \

		dst_ip 225.1.2.3 action drop



	create_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3



	# Send frames with the corresponding L2 destination address.

	$MZ $h1 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \

		-A 198.51.100.2 -B 225.1.2.3 -q



	tc_check_packets "dev $h2 ingress" 122 5

	check_err $? "Multicast not received on first host"

	tc_check_packets "dev $h3 ingress" 133 5

	check_err $? "Multicast not received on second host"



	delete_mcast_sg $rp1 198.51.100.2 225.1.2.3 $rp2 $rp3



	$MZ $h1 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \

		-A 198.51.100.2 -B 225.1.2.3 -q



	tc_check_packets "dev $h2 ingress" 122 5

	check_err $? "Multicast received on host although deleted"

	tc_check_packets "dev $h3 ingress" 133 5

	check_err $? "Multicast received on second host although deleted"



	tc filter del dev $h3 ingress protocol ip pref 1 handle 133 flower

	tc filter del dev $h2 ingress protocol ip pref 1 handle 122 flower



	log_test "mcast IPv4"

}



mcast_v6()

{

	# Add two interfaces to an MC group, send a packet to the MC group and

	# verify packets are received on both. Then delete the route and verify

	# packets are no longer received.



	RET=0



	tc filter add dev $h2 ingress protocol ipv6 pref 1 handle 122 flower \

		dst_ip ff0e::3 action drop

	tc filter add dev $h3 ingress protocol ipv6 pref 1 handle 133 flower \

		dst_ip ff0e::3 action drop



	create_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3



	# Send frames with the corresponding L2 destination address.

	$MZ $h1 -6 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 \

		-b 33:33:00:00:00:03 -A 2001:db8:1::2 -B ff0e::3 -q



	tc_check_packets "dev $h2 ingress" 122 5

	check_err $? "Multicast not received on first host"

	tc_check_packets "dev $h3 ingress" 133 5

	check_err $? "Multicast not received on second host"



	delete_mcast_sg $rp1 2001:db8:1::2 ff0e::3 $rp2 $rp3



	$MZ $h1 -6 -c 5 -p 128 -t udp -a 00:11:22:33:44:55 \

		-b 33:33:00:00:00:03 -A 2001:db8:1::2 -B ff0e::3 -q



	tc_check_packets "dev $h2 ingress" 122 5

	check_err $? "Multicast received on first host although deleted"

	tc_check_packets "dev $h3 ingress" 133 5

	check_err $? "Multicast received on second host although deleted"



	tc filter del dev $h3 ingress protocol ipv6 pref 1 handle 133 flower

	tc filter del dev $h2 ingress protocol ipv6 pref 1 handle 122 flower



	log_test "mcast IPv6"

}



trap cleanup EXIT



setup_prepare

setup_wait



tests_run



exit $EXIT_STATUS