| #!/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 id |
| |
| for id in $(devlink_trap_policer_ids_get); do |
| echo |
| log_info "Running rate test for policer $id" |
| __rate_test $id |
| done |
| } |
| |
| __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 id |
| |
| for id in $(devlink_trap_policer_ids_get); do |
| echo |
| log_info "Running burst size test for policer $id" |
| __burst_test $id |
| done |
| } |
| |
| trap cleanup EXIT |
| |
| setup_prepare |
| setup_wait |
| |
| tests_run |
| |
| exit $EXIT_STATUS |
