diff options
Diffstat (limited to 'tools/testing/selftests/drivers/net/netdevsim/hw_stats_l3.sh')
| -rwxr-xr-x | tools/testing/selftests/drivers/net/netdevsim/hw_stats_l3.sh | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/tools/testing/selftests/drivers/net/netdevsim/hw_stats_l3.sh b/tools/testing/selftests/drivers/net/netdevsim/hw_stats_l3.sh new file mode 100755 index 000000000000..cba5ac08426b --- /dev/null +++ b/tools/testing/selftests/drivers/net/netdevsim/hw_stats_l3.sh @@ -0,0 +1,421 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +lib_dir=$(dirname $0)/../../../net/forwarding + +ALL_TESTS=" + l3_reporting_test + l3_fail_next_test + l3_counter_test + l3_rollback_test + l3_monitor_test +" + +NETDEVSIM_PATH=/sys/bus/netdevsim/ +DEV_ADDR_1=1337 +DEV_ADDR_2=1057 +DEV_ADDR_3=5417 +NUM_NETIFS=0 +source $lib_dir/lib.sh + +DUMMY_IFINDEX= + +DEV_ADDR() +{ + local n=$1; shift + local var=DEV_ADDR_$n + + echo ${!var} +} + +DEV() +{ + echo netdevsim$(DEV_ADDR $1) +} + +DEVLINK_DEV() +{ + echo netdevsim/$(DEV $1) +} + +SYSFS_NET_DIR() +{ + echo /sys/bus/netdevsim/devices/$(DEV $1)/net/ +} + +DEBUGFS_DIR() +{ + echo /sys/kernel/debug/netdevsim/$(DEV $1)/ +} + +nsim_add() +{ + local n=$1; shift + + echo "$(DEV_ADDR $n) 1" > ${NETDEVSIM_PATH}/new_device + while [ ! -d $(SYSFS_NET_DIR $n) ] ; do :; done +} + +nsim_reload() +{ + local n=$1; shift + local ns=$1; shift + + devlink dev reload $(DEVLINK_DEV $n) netns $ns + + if [ $? -ne 0 ]; then + echo "Failed to reload $(DEV $n) into netns \"testns1\"" + exit 1 + fi + +} + +nsim_del() +{ + local n=$1; shift + + echo "$(DEV_ADDR $n)" > ${NETDEVSIM_PATH}/del_device +} + +nsim_hwstats_toggle() +{ + local action=$1; shift + local instance=$1; shift + local netdev=$1; shift + local type=$1; shift + + local ifindex=$($IP -j link show dev $netdev | jq '.[].ifindex') + + echo $ifindex > $(DEBUGFS_DIR $instance)/hwstats/$type/$action +} + +nsim_hwstats_enable() +{ + nsim_hwstats_toggle enable_ifindex "$@" +} + +nsim_hwstats_disable() +{ + nsim_hwstats_toggle disable_ifindex "$@" +} + +nsim_hwstats_fail_next_enable() +{ + nsim_hwstats_toggle fail_next_enable "$@" +} + +setup_prepare() +{ + modprobe netdevsim &> /dev/null + nsim_add 1 + nsim_add 2 + nsim_add 3 + + ip netns add testns1 + + if [ $? -ne 0 ]; then + echo "Failed to add netns \"testns1\"" + exit 1 + fi + + nsim_reload 1 testns1 + nsim_reload 2 testns1 + nsim_reload 3 testns1 + + IP="ip -n testns1" + + $IP link add name dummy1 type dummy + $IP link set dev dummy1 up + DUMMY_IFINDEX=$($IP -j link show dev dummy1 | jq '.[].ifindex') +} + +cleanup() +{ + pre_cleanup + + $IP link del name dummy1 + ip netns del testns1 + nsim_del 3 + nsim_del 2 + nsim_del 1 + modprobe -r netdevsim &> /dev/null +} + +netdev_hwstats_used() +{ + local netdev=$1; shift + local type=$1; shift + + $IP -j stats show dev "$netdev" group offload subgroup hw_stats_info | + jq '.[].info.l3_stats.used' +} + +netdev_check_used() +{ + local netdev=$1; shift + local type=$1; shift + + [[ $(netdev_hwstats_used $netdev $type) == "true" ]] +} + +netdev_check_unused() +{ + local netdev=$1; shift + local type=$1; shift + + [[ $(netdev_hwstats_used $netdev $type) == "false" ]] +} + +netdev_hwstats_request() +{ + local netdev=$1; shift + local type=$1; shift + + $IP -j stats show dev "$netdev" group offload subgroup hw_stats_info | + jq ".[].info.${type}_stats.request" +} + +netdev_check_requested() +{ + local netdev=$1; shift + local type=$1; shift + + [[ $(netdev_hwstats_request $netdev $type) == "true" ]] +} + +netdev_check_unrequested() +{ + local netdev=$1; shift + local type=$1; shift + + [[ $(netdev_hwstats_request $netdev $type) == "false" ]] +} + +reporting_test() +{ + local type=$1; shift + local instance=1 + + RET=0 + + [[ -n $(netdev_hwstats_used dummy1 $type) ]] + check_err $? "$type stats not reported" + + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used before either device or netdevsim request" + + nsim_hwstats_enable $instance dummy1 $type + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used before device request" + netdev_check_unrequested dummy1 $type + check_err $? "$type stats reported as requested before device request" + + $IP stats set dev dummy1 ${type}_stats on + netdev_check_used dummy1 $type + check_err $? "$type stats reported as not used after both device and netdevsim request" + netdev_check_requested dummy1 $type + check_err $? "$type stats reported as not requested after device request" + + nsim_hwstats_disable $instance dummy1 $type + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used after netdevsim request withdrawn" + + nsim_hwstats_enable $instance dummy1 $type + netdev_check_used dummy1 $type + check_err $? "$type stats reported as not used after netdevsim request reenabled" + + $IP stats set dev dummy1 ${type}_stats off + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used after device request withdrawn" + netdev_check_unrequested dummy1 $type + check_err $? "$type stats reported as requested after device request withdrawn" + + nsim_hwstats_disable $instance dummy1 $type + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used after both requests withdrawn" + + log_test "Reporting of $type stats usage" +} + +l3_reporting_test() +{ + reporting_test l3 +} + +__fail_next_test() +{ + local instance=$1; shift + local type=$1; shift + + RET=0 + + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used before either device or netdevsim request" + + nsim_hwstats_enable $instance dummy1 $type + nsim_hwstats_fail_next_enable $instance dummy1 $type + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used before device request" + netdev_check_unrequested dummy1 $type + check_err $? "$type stats reported as requested before device request" + + $IP stats set dev dummy1 ${type}_stats on 2>/dev/null + check_fail $? "$type stats request not bounced as it should have been" + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used after bounce" + netdev_check_unrequested dummy1 $type + check_err $? "$type stats reported as requested after bounce" + + $IP stats set dev dummy1 ${type}_stats on + check_err $? "$type stats request failed when it shouldn't have" + netdev_check_used dummy1 $type + check_err $? "$type stats reported as not used after both device and netdevsim request" + netdev_check_requested dummy1 $type + check_err $? "$type stats reported as not requested after device request" + + $IP stats set dev dummy1 ${type}_stats off + nsim_hwstats_disable $instance dummy1 $type + + log_test "Injected failure of $type stats enablement (netdevsim #$instance)" +} + +fail_next_test() +{ + __fail_next_test 1 "$@" + __fail_next_test 2 "$@" + __fail_next_test 3 "$@" +} + +l3_fail_next_test() +{ + fail_next_test l3 +} + +get_hwstat() +{ + local netdev=$1; shift + local type=$1; shift + local selector=$1; shift + + $IP -j stats show dev $netdev group offload subgroup ${type}_stats | + jq ".[0].stats64.${selector}" +} + +counter_test() +{ + local type=$1; shift + local instance=1 + + RET=0 + + nsim_hwstats_enable $instance dummy1 $type + $IP stats set dev dummy1 ${type}_stats on + netdev_check_used dummy1 $type + check_err $? "$type stats reported as not used after both device and netdevsim request" + + # Netdevsim counts 10pps on ingress. We should see maybe a couple + # packets, unless things take a reeealy long time. + local pkts=$(get_hwstat dummy1 l3 rx.packets) + ((pkts < 10)) + check_err $? "$type stats show >= 10 packets after first enablement" + + sleep 2.5 + + local pkts=$(get_hwstat dummy1 l3 rx.packets) + ((pkts >= 20)) + check_err $? "$type stats show < 20 packets after 2.5s passed" + + $IP stats set dev dummy1 ${type}_stats off + + sleep 2 + + $IP stats set dev dummy1 ${type}_stats on + local pkts=$(get_hwstat dummy1 l3 rx.packets) + ((pkts < 10)) + check_err $? "$type stats show >= 10 packets after second enablement" + + $IP stats set dev dummy1 ${type}_stats off + nsim_hwstats_fail_next_enable $instance dummy1 $type + $IP stats set dev dummy1 ${type}_stats on 2>/dev/null + check_fail $? "$type stats request not bounced as it should have been" + + sleep 2 + + $IP stats set dev dummy1 ${type}_stats on + local pkts=$(get_hwstat dummy1 l3 rx.packets) + ((pkts < 10)) + check_err $? "$type stats show >= 10 packets after post-fail enablement" + + $IP stats set dev dummy1 ${type}_stats off + + log_test "Counter values in $type stats" +} + +l3_counter_test() +{ + counter_test l3 +} + +rollback_test() +{ + local type=$1; shift + + RET=0 + + nsim_hwstats_enable 1 dummy1 l3 + nsim_hwstats_enable 2 dummy1 l3 + nsim_hwstats_enable 3 dummy1 l3 + + # The three netdevsim instances are registered in order of their number + # one after another. It is reasonable to expect that whatever + # notifications take place hit no. 2 in between hitting nos. 1 and 3, + # whatever the actual order. This allows us to test that a fail caused + # by no. 2 does not leave the system in a partial state, and rolls + # everything back. + + nsim_hwstats_fail_next_enable 2 dummy1 l3 + $IP stats set dev dummy1 ${type}_stats on 2>/dev/null + check_fail $? "$type stats request not bounced as it should have been" + + netdev_check_unused dummy1 $type + check_err $? "$type stats reported as used after bounce" + netdev_check_unrequested dummy1 $type + check_err $? "$type stats reported as requested after bounce" + + sleep 2 + + $IP stats set dev dummy1 ${type}_stats on + check_err $? "$type stats request not upheld as it should have been" + + local pkts=$(get_hwstat dummy1 l3 rx.packets) + ((pkts < 10)) + check_err $? "$type stats show $pkts packets after post-fail enablement" + + $IP stats set dev dummy1 ${type}_stats off + + nsim_hwstats_disable 3 dummy1 l3 + nsim_hwstats_disable 2 dummy1 l3 + nsim_hwstats_disable 1 dummy1 l3 + + log_test "Failure in $type stats enablement rolled back" +} + +l3_rollback_test() +{ + rollback_test l3 +} + +l3_monitor_test() +{ + hw_stats_monitor_test dummy1 l3 \ + "nsim_hwstats_enable 1 dummy1 l3" \ + "nsim_hwstats_disable 1 dummy1 l3" \ + "$IP" +} + +trap cleanup EXIT + +setup_prepare +tests_run + +exit $EXIT_STATUS |