linux-zen-desktop/tools/testing/selftests/drivers/net/mlxsw/tc_police_occ.sh

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Test that policers shared by different tc filters are correctly reference
# counted by observing policers' occupancy via devlink-resource.
lib_dir=$(dirname $0)/../../../net/forwarding
ALL_TESTS="
tc_police_occ_test
"
NUM_NETIFS=2
source $lib_dir/lib.sh
source $lib_dir/devlink_lib.sh
h1_create()
{
simple_if_init $h1
}
h1_destroy()
{
simple_if_fini $h1
}
switch_create()
{
simple_if_init $swp1
tc qdisc add dev $swp1 clsact
}
switch_destroy()
{
tc qdisc del dev $swp1 clsact
simple_if_fini $swp1
}
setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}
vrf_prepare
h1_create
switch_create
}
cleanup()
{
pre_cleanup
switch_destroy
h1_destroy
vrf_cleanup
}
tc_police_occ_get()
{
devlink_resource_occ_get global_policers single_rate_policers
}
tc_police_occ_test()
{
RET=0
local occ=$(tc_police_occ_get)
tc filter add dev $swp1 ingress pref 1 handle 101 proto ip \
flower skip_sw \
action police rate 100mbit burst 100k conform-exceed drop/ok
(( occ + 1 == $(tc_police_occ_get) ))
check_err $? "Got occupancy $(tc_police_occ_get), expected $((occ + 1))"
tc filter del dev $swp1 ingress pref 1 handle 101 flower
(( occ == $(tc_police_occ_get) ))
check_err $? "Got occupancy $(tc_police_occ_get), expected $occ"
tc filter add dev $swp1 ingress pref 1 handle 101 proto ip \
flower skip_sw \
action police rate 100mbit burst 100k conform-exceed drop/ok \
index 10
tc filter add dev $swp1 ingress pref 2 handle 102 proto ip \
flower skip_sw action police index 10
(( occ + 1 == $(tc_police_occ_get) ))
check_err $? "Got occupancy $(tc_police_occ_get), expected $((occ + 1))"
tc filter del dev $swp1 ingress pref 2 handle 102 flower
(( occ + 1 == $(tc_police_occ_get) ))
check_err $? "Got occupancy $(tc_police_occ_get), expected $((occ + 1))"
tc filter del dev $swp1 ingress pref 1 handle 101 flower
(( occ == $(tc_police_occ_get) ))
check_err $? "Got occupancy $(tc_police_occ_get), expected $occ"
log_test "tc police occupancy"
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
exit $EXIT_STATUS