Commit 63f3c1d0 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

selftests: mlxsw: RED: Test RED ECN nodrop offload 



Extend RED testsuite to cover the new nodrop mode of RED-ECN. This test is
really similar to ECN test, diverging only in the last step, where UDP
traffic should go to backlog instead of being dropped. Thus extract a
common helper, ecn_test_common(), make do_ecn_test() into a relatively
simple wrapper, and add another one, do_ecn_nodrop_test().

Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 058e56ac

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

+42 −8
Original line number Diff line number Diff line
@@ -389,17 +389,14 @@ check_marking() 
	((pct $cond))

}



do_ecn_test()

ecn_test_common()

{

	local name=$1; shift

	local vlan=$1; shift

	local limit=$1; shift

	local backlog

	local pct



	# Main stream.

	start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \

			  $h3_mac tos=0x01



	# Build the below-the-limit backlog using UDP. We could use TCP just

	# fine, but this way we get a proof that UDP is accepted when queue

	# length is below the limit. The main stream is using TCP, and if the
@@ -409,7 +406,7 @@ do_ecn_test() 
	check_err $? "Could not build the requested backlog"

	pct=$(check_marking $vlan "== 0")

	check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."

	log_test "TC $((vlan - 10)): ECN backlog < limit"

	log_test "TC $((vlan - 10)): $name backlog < limit"



	# Now push TCP, because non-TCP traffic would be early-dropped after the

	# backlog crosses the limit, and we want to make sure that the backlog
@@ -419,7 +416,20 @@ do_ecn_test() 
	check_err $? "Could not build the requested backlog"

	pct=$(check_marking $vlan ">= 95")

	check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected >= 95."

	log_test "TC $((vlan - 10)): ECN backlog > limit"

	log_test "TC $((vlan - 10)): $name backlog > limit"

}



do_ecn_test()

{

	local vlan=$1; shift

	local limit=$1; shift

	local name=ECN



	start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \

			  $h3_mac tos=0x01

	sleep 1



	ecn_test_common "$name" $vlan $limit



	# Up there we saw that UDP gets accepted when backlog is below the

	# limit. Now that it is above, it should all get dropped, and backlog
@@ -427,7 +437,31 @@ do_ecn_test() 
	RET=0

	build_backlog $vlan $((2 * limit)) udp >/dev/null

	check_fail $? "UDP traffic went into backlog instead of being early-dropped"

	log_test "TC $((vlan - 10)): ECN backlog > limit: UDP early-dropped"

	log_test "TC $((vlan - 10)): $name backlog > limit: UDP early-dropped"



	stop_traffic

	sleep 1

}



do_ecn_nodrop_test()

{

	local vlan=$1; shift

	local limit=$1; shift

	local name="ECN nodrop"



	start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \

			  $h3_mac tos=0x01

	sleep 1



	ecn_test_common "$name" $vlan $limit



	# Up there we saw that UDP gets accepted when backlog is below the

	# limit. Now that it is above, in nodrop mode, make sure it goes to

	# backlog as well.

	RET=0

	build_backlog $vlan $((2 * limit)) udp >/dev/null

	check_err $? "UDP traffic was early-dropped instead of getting into backlog"

	log_test "TC $((vlan - 10)): $name backlog > limit: UDP not dropped"



	stop_traffic

	sleep 1

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

+11 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 
ALL_TESTS="

	ping_ipv4

	ecn_test

	ecn_nodrop_test

	red_test

	mc_backlog_test

"
@@ -50,6 +51,16 @@ ecn_test() 
	uninstall_qdisc

}



ecn_nodrop_test()

{

	install_qdisc ecn nodrop



	do_ecn_nodrop_test 10 $BACKLOG1

	do_ecn_nodrop_test 11 $BACKLOG2



	uninstall_qdisc

}



red_test()

{

	install_qdisc

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

+8 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 
ALL_TESTS="

	ping_ipv4

	ecn_test

	ecn_nodrop_test

	red_test

	mc_backlog_test

"
@@ -33,6 +34,13 @@ ecn_test() 
	uninstall_qdisc

}



ecn_nodrop_test()

{

	install_qdisc ecn nodrop

	do_ecn_nodrop_test 10 $BACKLOG

	uninstall_qdisc

}



red_test()

{

	install_qdisc

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