Commit 59b3a4f3 authored by Amit Cohen's avatar Amit Cohen Committed by David S. Miller
Browse files

selftests: forwarding: router: Add test case for multicast destination MAC mismatch 



Add test case to check that packets are not dropped when they need to be
routed and their multicast MAC mismatched to their multicast destination
IP.

i.e., destination IP is multicast and
	* for IPV4: DMAC !=  {01-00-5E-0 (25 bits), DIP[22:0]}
	* for IPV6: DMAC !=  {33-33-0 (16 bits), DIP[31:0]}

Signed-off-by: default avatarAmit Cohen <amitc@mellanox.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 359ec566

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

+82 −0
Original line number Diff line number Diff line
@@ -5,12 +5,17 @@ ALL_TESTS=" 
	ping_ipv4

	ping_ipv6

	sip_in_class_e

	mc_mac_mismatch

"



NUM_NETIFS=4

source lib.sh

source tc_common.sh



require_command $MCD

require_command $MC_CLI

table_name=selftests



h1_create()

{

	vrf_create "vrf-h1"
@@ -93,6 +98,25 @@ router_destroy() 
	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]}
@@ -103,6 +127,8 @@ setup_prepare() 


	rp1mac=$(mac_get $rp1)



	start_mcd



	vrf_prepare



	h1_create
@@ -125,6 +151,8 @@ cleanup() 
	h1_destroy



	vrf_cleanup



	kill_mcd

}



ping_ipv4()
@@ -161,6 +189,60 @@ sip_in_class_e() 
	sysctl_restore net.ipv4.conf.all.rp_filter

}



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

}



__mc_mac_mismatch()

{

	local desc=$1; shift

	local proto=$1; shift

	local sip=$1; shift

	local dip=$1; shift

	local flags=${1:-""}; shift

	local dmac=01:02:03:04:05:06



	RET=0



	tc filter add dev $rp2 egress protocol $proto pref 1 handle 101 \

		flower dst_ip $dip action pass



	create_mcast_sg $rp1 $sip $dip $rp2



	$MZ $flags $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec -b $dmac \

		-B $dip -q



	tc_check_packets "dev $rp2 egress" 101 5

	check_err $? "Packets were dropped"



	log_test "Multicast MAC mismatch: $desc"



	delete_mcast_sg $rp1 $sip $dip $rp2

	tc filter del dev $rp2 egress protocol $proto pref 1 handle 101 flower

}



mc_mac_mismatch()

{

	__mc_mac_mismatch "IPv4" "ip" 192.0.2.2 225.1.2.3

	__mc_mac_mismatch "IPv6" "ipv6" 2001:db8:1::2 ff0e::3 "-6"

}



trap cleanup EXIT



setup_prepare

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