name : devlink_trap_policer.sh #!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Test devlink-trap policer functionality over mlxsw. # +---------------------------------+ # | H1 (vrf) | # | + $h1 | # | | 192.0.2.1/24 | # | | | # | | default via 192.0.2.2 | # +----|----------------------------+ # | # +----|----------------------------------------------------------------------+ # | SW | | # | + $rp1 | # | 192.0.2.2/24 | # | | # | 198.51.100.2/24 | # | + $rp2 | # | | | # +----|----------------------------------------------------------------------+ # | # +----|----------------------------+ # | | default via 198.51.100.2 | # | | | # | | 198.51.100.1/24 | # | + $h2 | # | H2 (vrf) | # +---------------------------------+ lib_dir=$(dirname $0)/../../../net/forwarding ALL_TESTS=" rate_limits_test burst_limits_test rate_test burst_test " NUM_NETIFS=4 source $lib_dir/tc_common.sh source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh h1_create() { simple_if_init $h1 192.0.2.1/24 mtu_set $h1 10000 ip -4 route add default vrf v$h1 nexthop via 192.0.2.2 } h1_destroy() { ip -4 route del default vrf v$h1 nexthop via 192.0.2.2 mtu_restore $h1 simple_if_fini $h1 192.0.2.1/24 } h2_create() { simple_if_init $h2 198.51.100.1/24 mtu_set $h2 10000 ip -4 route add default vrf v$h2 nexthop via 198.51.100.2 } h2_destroy() { ip -4 route del default vrf v$h2 nexthop via 198.51.100.2 mtu_restore $h2 simple_if_fini $h2 198.51.100.1/24 } router_create() { ip link set dev $rp1 up ip link set dev $rp2 up __addr_add_del $rp1 add 192.0.2.2/24 __addr_add_del $rp2 add 198.51.100.2/24 mtu_set $rp1 10000 mtu_set $rp2 10000 ip -4 route add blackhole 198.51.100.100 devlink trap set $DEVLINK_DEV trap blackhole_route action trap } router_destroy() { devlink trap set $DEVLINK_DEV trap blackhole_route action drop ip -4 route del blackhole 198.51.100.100 mtu_restore $rp2 mtu_restore $rp1 __addr_add_del $rp2 del 198.51.100.2/24 __addr_add_del $rp1 del 192.0.2.2/24 ip link set dev $rp2 down ip link set dev $rp1 down } setup_prepare() { h1=${NETIFS[p1]} rp1=${NETIFS[p2]} rp2=${NETIFS[p3]} h2=${NETIFS[p4]} rp1_mac=$(mac_get $rp1) vrf_prepare h1_create h2_create router_create } cleanup() { pre_cleanup router_destroy h2_destroy h1_destroy vrf_cleanup # Reload to ensure devlink-trap settings are back to default. devlink_reload } rate_limits_test() { RET=0 devlink trap policer set $DEVLINK_DEV policer 1 rate 0 &> /dev/null check_fail $? "Policer rate was changed to rate lower than limit" devlink trap policer set $DEVLINK_DEV policer 1 \ rate 2000000001 &> /dev/null check_fail $? "Policer rate was changed to rate higher than limit" devlink trap policer set $DEVLINK_DEV policer 1 rate 1 check_err $? "Failed to set policer rate to minimum" devlink trap policer set $DEVLINK_DEV policer 1 rate 2000000000 check_err $? "Failed to set policer rate to maximum" log_test "Trap policer rate limits" } burst_limits_test() { RET=0 devlink trap policer set $DEVLINK_DEV policer 1 burst 0 &> /dev/null check_fail $? "Policer burst size was changed to 0" devlink trap policer set $DEVLINK_DEV policer 1 burst 17 &> /dev/null check_fail $? "Policer burst size was changed to burst size that is not power of 2" devlink trap policer set $DEVLINK_DEV policer 1 burst 8 &> /dev/null check_fail $? "Policer burst size was changed to burst size lower than limit" devlink trap policer set $DEVLINK_DEV policer 1 \ burst $((2**25)) &> /dev/null check_fail $? "Policer burst size was changed to burst size higher than limit" devlink trap policer set $DEVLINK_DEV policer 1 burst 16 check_err $? "Failed to set policer burst size to minimum" devlink trap policer set $DEVLINK_DEV policer 1 burst $((2**24)) check_err $? "Failed to set policer burst size to maximum" log_test "Trap policer burst size limits" } trap_rate_get() { local t0 t1 t0=$(devlink_trap_rx_packets_get blackhole_route) sleep 10 t1=$(devlink_trap_rx_packets_get blackhole_route) echo $(((t1 - t0) / 10)) } policer_drop_rate_get() { local id=$1; shift local t0 t1 t0=$(devlink_trap_policer_rx_dropped_get $id) sleep 10 t1=$(devlink_trap_policer_rx_dropped_get $id) echo $(((t1 - t0) / 10)) } __rate_test() { local rate pct drop_rate local id=$1; shift RET=0 devlink trap policer set $DEVLINK_DEV policer $id rate 1000 burst 512 devlink trap group set $DEVLINK_DEV group l3_drops policer $id # Send packets at highest possible rate and make sure they are dropped # by the policer. Make sure measured received rate is about 1000 pps log_info "=== Tx rate: Highest, Policer rate: 1000 pps ===" start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac sleep 5 # Take measurements when rate is stable rate=$(trap_rate_get) pct=$((100 * (rate - 1000) / 1000)) ((-10 <= pct && pct <= 10)) check_err $? "Expected rate 1000 pps, got $rate pps, which is $pct% off. Required accuracy is +-10%" log_info "Expected rate 1000 pps, measured rate $rate pps" drop_rate=$(policer_drop_rate_get $id) (( drop_rate > 0 )) check_err $? "Expected non-zero policer drop rate, got 0" log_info "Measured policer drop rate of $drop_rate pps" stop_traffic # Send packets at a rate of 1000 pps and make sure they are not dropped # by the policer log_info "=== Tx rate: 1000 pps, Policer rate: 1000 pps ===" start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac -d 1msec sleep 5 # Take measurements when rate is stable drop_rate=$(policer_drop_rate_get $id) (( drop_rate == 0 )) check_err $? "Expected zero policer drop rate, got a drop rate of $drop_rate pps" log_info "Measured policer drop rate of $drop_rate pps" stop_traffic # Unbind the policer and send packets at highest possible rate. Make # sure they are not dropped by the policer and that the measured # received rate is higher than 1000 pps log_info "=== Tx rate: Highest, Policer rate: No policer ===" devlink trap group set $DEVLINK_DEV group l3_drops nopolicer start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac rate=$(trap_rate_get) (( rate > 1000 )) check_err $? "Expected rate higher than 1000 pps, got $rate pps" log_info "Measured rate $rate pps" drop_rate=$(policer_drop_rate_get $id) (( drop_rate == 0 )) check_err $? "Expected zero policer drop rate, got a drop rate of $drop_rate pps" log_info "Measured policer drop rate of $drop_rate pps" stop_traffic log_test "Trap policer rate" } rate_test() { local last_policer=$(devlink -j -p trap policer show | jq '[.[]["'$DEVLINK_DEV'"][].policer] | max') log_info "Running rate test for policer 1" __rate_test 1 log_info "Running rate test for policer $((last_policer / 2))" __rate_test $((last_policer / 2)) log_info "Running rate test for policer $last_policer" __rate_test $last_policer } __burst_test() { local t0_rx t0_drop t1_rx t1_drop rx drop local id=$1; shift RET=0 devlink trap policer set $DEVLINK_DEV policer $id rate 1000 burst 512 devlink trap group set $DEVLINK_DEV group l3_drops policer $id # Send a burst of 16 packets and make sure that 16 are received # and that none are dropped by the policer log_info "=== Tx burst size: 16, Policer burst size: 512 ===" t0_rx=$(devlink_trap_rx_packets_get blackhole_route) t0_drop=$(devlink_trap_policer_rx_dropped_get $id) start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac -c 16 t1_rx=$(devlink_trap_rx_packets_get blackhole_route) t1_drop=$(devlink_trap_policer_rx_dropped_get $id) rx=$((t1_rx - t0_rx)) (( rx == 16 )) check_err $? "Expected burst size of 16 packets, got $rx packets" log_info "Expected burst size of 16 packets, measured burst size of $rx packets" drop=$((t1_drop - t0_drop)) (( drop == 0 )) check_err $? "Expected zero policer drops, got $drop" log_info "Measured policer drops of $drop packets" # Unbind the policer and send a burst of 64 packets. Make sure that # 64 packets are received and that none are dropped by the policer log_info "=== Tx burst size: 64, Policer burst size: No policer ===" devlink trap group set $DEVLINK_DEV group l3_drops nopolicer t0_rx=$(devlink_trap_rx_packets_get blackhole_route) t0_drop=$(devlink_trap_policer_rx_dropped_get $id) start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac -c 64 t1_rx=$(devlink_trap_rx_packets_get blackhole_route) t1_drop=$(devlink_trap_policer_rx_dropped_get $id) rx=$((t1_rx - t0_rx)) (( rx == 64 )) check_err $? "Expected burst size of 64 packets, got $rx packets" log_info "Expected burst size of 64 packets, measured burst size of $rx packets" drop=$((t1_drop - t0_drop)) (( drop == 0 )) check_err $? "Expected zero policer drops, got $drop" log_info "Measured policer drops of $drop packets" log_test "Trap policer burst size" } burst_test() { local last_policer=$(devlink -j -p trap policer show | jq '[.[]["'$DEVLINK_DEV'"][].policer] | max') log_info "Running burst test for policer 1" __burst_test 1 log_info "Running burst test for policer $((last_policer / 2))" __burst_test $((last_policer / 2)) log_info "Running burst test for policer $last_policer" __burst_test $last_policer } trap cleanup EXIT setup_prepare setup_wait tests_run exit $EXIT_STATUS