Commit ffff9c9c authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

selftests: mlxsw: Reduce runtime of tc-police scale test 



Currently, the test takes about 626 seconds to complete because of an
inefficient use of the device's TCAM. Reduce the runtime to 202 seconds
by inserting all the flower filters with the same preference and mask,
but with a different key.

In particular, this reduces the deletion of the qdisc (which triggers
the deletion of all the filters) from 66 seconds to 0.2 seconds. This
prevents various netlink requests from user space applications (e.g.,
systemd-networkd) from timing-out because RTNL is not held for too long
anymore.

Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 24f54c52

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

+10 −2
Original line number Diff line number Diff line
@@ -24,6 +24,13 @@ tc_police_switch_destroy() 
	simple_if_fini $swp1

}



tc_police_addr()

{

       local num=$1; shift



       printf "2001:db8:1::%x" $num

}



tc_police_rules_create()

{

	local count=$1; shift
@@ -34,8 +41,9 @@ tc_police_rules_create() 
	for ((i = 0; i < count; ++i)); do

		cat >> $TC_POLICE_BATCH_FILE <<-EOF

			filter add dev $swp1 ingress \

				prot ip \

				flower skip_sw \

				prot ipv6 \

				pref 1000 \

				flower skip_sw dst_ip $(tc_police_addr $i) \

				action police rate 10mbit burst 100k \

				conform-exceed drop/ok

		EOF