Commit 84e8feea authored by Ido Schimmel's avatar Ido Schimmel Committed by Jakub Kicinski
Browse files

selftests: mlxsw: Add blackhole_nexthop trap test 



Test that packets hitting a blackhole nexthop are trapped to the CPU
when the trap is enabled. Test that packets are not reported when the
trap is disabled.

Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 37b50e55

tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_drops.sh

+36 −0
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ ALL_TESTS=" 
	blackhole_route_test

	irif_disabled_test

	erif_disabled_test

	blackhole_nexthop_test

"



NUM_NETIFS=4
@@ -647,6 +648,41 @@ erif_disabled_test() 
	devlink_trap_action_set $trap_name "drop"

}



__blackhole_nexthop_test()

{

	local flags=$1; shift

	local subnet=$1; shift

	local proto=$1; shift

	local dip=$1; shift

	local trap_name="blackhole_nexthop"

	local mz_pid



	RET=0



	ip -$flags nexthop add id 1 blackhole

	ip -$flags route add $subnet nhid 1

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

		flower skip_hw dst_ip $dip ip_proto udp action drop



	# Generate packets to the blackhole nexthop

	$MZ $h1 -$flags -t udp "sp=54321,dp=12345" -c 0 -p 100 -b $rp1mac \

		-B $dip -d 1msec -q &

	mz_pid=$!



	devlink_trap_drop_test $trap_name $rp2 101

	log_test "Blackhole nexthop: IPv$flags"



	devlink_trap_drop_cleanup $mz_pid $rp2 $proto 1 101

	ip -$flags route del $subnet

	ip -$flags nexthop del id 1

}



blackhole_nexthop_test()

{

	__blackhole_nexthop_test "4" "198.51.100.0/30" "ip" $h2_ipv4

	__blackhole_nexthop_test "6" "2001:db8:2::/120" "ipv6" $h2_ipv6

}



trap cleanup EXIT



setup_prepare