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selftests: netdevsim: hw_stats_l3: Add a new test
Add a test that verifies basic UAPI contracts, netdevsim operation, rollbacks after partial enablement in core, and UAPI notifications. Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Petr Machata
Paolo Abeni
parent
1a6d7ae7d6
commit
9b18942e99
421
tools/testing/selftests/drivers/net/netdevsim/hw_stats_l3.sh
Executable file
421
tools/testing/selftests/drivers/net/netdevsim/hw_stats_l3.sh
Executable file
@ -0,0 +1,421 @@
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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lib_dir=$(dirname $0)/../../../net/forwarding
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ALL_TESTS="
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l3_reporting_test
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l3_fail_next_test
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l3_counter_test
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l3_rollback_test
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l3_monitor_test
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"
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NETDEVSIM_PATH=/sys/bus/netdevsim/
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DEV_ADDR_1=1337
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DEV_ADDR_2=1057
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DEV_ADDR_3=5417
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NUM_NETIFS=0
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source $lib_dir/lib.sh
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DUMMY_IFINDEX=
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DEV_ADDR()
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{
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local n=$1; shift
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local var=DEV_ADDR_$n
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echo ${!var}
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}
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DEV()
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{
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echo netdevsim$(DEV_ADDR $1)
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}
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DEVLINK_DEV()
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{
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echo netdevsim/$(DEV $1)
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}
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SYSFS_NET_DIR()
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{
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echo /sys/bus/netdevsim/devices/$(DEV $1)/net/
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}
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DEBUGFS_DIR()
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{
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echo /sys/kernel/debug/netdevsim/$(DEV $1)/
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}
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nsim_add()
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{
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local n=$1; shift
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echo "$(DEV_ADDR $n) 1" > ${NETDEVSIM_PATH}/new_device
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while [ ! -d $(SYSFS_NET_DIR $n) ] ; do :; done
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}
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nsim_reload()
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{
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local n=$1; shift
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local ns=$1; shift
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devlink dev reload $(DEVLINK_DEV $n) netns $ns
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if [ $? -ne 0 ]; then
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echo "Failed to reload $(DEV $n) into netns \"testns1\""
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exit 1
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fi
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}
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nsim_del()
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{
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local n=$1; shift
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echo "$(DEV_ADDR $n)" > ${NETDEVSIM_PATH}/del_device
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}
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nsim_hwstats_toggle()
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{
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local action=$1; shift
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local instance=$1; shift
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local netdev=$1; shift
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local type=$1; shift
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local ifindex=$($IP -j link show dev $netdev | jq '.[].ifindex')
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echo $ifindex > $(DEBUGFS_DIR $instance)/hwstats/$type/$action
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}
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nsim_hwstats_enable()
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{
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nsim_hwstats_toggle enable_ifindex "$@"
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}
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nsim_hwstats_disable()
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{
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nsim_hwstats_toggle disable_ifindex "$@"
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}
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nsim_hwstats_fail_next_enable()
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{
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nsim_hwstats_toggle fail_next_enable "$@"
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}
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setup_prepare()
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{
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modprobe netdevsim &> /dev/null
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nsim_add 1
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nsim_add 2
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nsim_add 3
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ip netns add testns1
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if [ $? -ne 0 ]; then
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echo "Failed to add netns \"testns1\""
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exit 1
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fi
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nsim_reload 1 testns1
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nsim_reload 2 testns1
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nsim_reload 3 testns1
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IP="ip -n testns1"
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$IP link add name dummy1 type dummy
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$IP link set dev dummy1 up
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DUMMY_IFINDEX=$($IP -j link show dev dummy1 | jq '.[].ifindex')
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}
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cleanup()
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{
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pre_cleanup
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$IP link del name dummy1
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ip netns del testns1
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nsim_del 3
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nsim_del 2
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nsim_del 1
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modprobe -r netdevsim &> /dev/null
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}
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netdev_hwstats_used()
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{
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local netdev=$1; shift
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local type=$1; shift
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$IP -j stats show dev "$netdev" group offload subgroup hw_stats_info |
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jq '.[].info.l3_stats.used'
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}
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netdev_check_used()
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{
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local netdev=$1; shift
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local type=$1; shift
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[[ $(netdev_hwstats_used $netdev $type) == "true" ]]
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}
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netdev_check_unused()
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{
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local netdev=$1; shift
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local type=$1; shift
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[[ $(netdev_hwstats_used $netdev $type) == "false" ]]
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}
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netdev_hwstats_request()
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{
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local netdev=$1; shift
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local type=$1; shift
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$IP -j stats show dev "$netdev" group offload subgroup hw_stats_info |
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jq ".[].info.${type}_stats.request"
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}
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netdev_check_requested()
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{
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local netdev=$1; shift
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local type=$1; shift
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[[ $(netdev_hwstats_request $netdev $type) == "true" ]]
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}
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netdev_check_unrequested()
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{
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local netdev=$1; shift
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local type=$1; shift
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[[ $(netdev_hwstats_request $netdev $type) == "false" ]]
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}
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reporting_test()
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{
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local type=$1; shift
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local instance=1
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RET=0
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[[ -n $(netdev_hwstats_used dummy1 $type) ]]
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check_err $? "$type stats not reported"
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used before either device or netdevsim request"
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nsim_hwstats_enable $instance dummy1 $type
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used before device request"
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netdev_check_unrequested dummy1 $type
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check_err $? "$type stats reported as requested before device request"
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$IP stats set dev dummy1 ${type}_stats on
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netdev_check_used dummy1 $type
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check_err $? "$type stats reported as not used after both device and netdevsim request"
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netdev_check_requested dummy1 $type
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check_err $? "$type stats reported as not requested after device request"
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nsim_hwstats_disable $instance dummy1 $type
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used after netdevsim request withdrawn"
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nsim_hwstats_enable $instance dummy1 $type
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netdev_check_used dummy1 $type
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check_err $? "$type stats reported as not used after netdevsim request reenabled"
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$IP stats set dev dummy1 ${type}_stats off
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used after device request withdrawn"
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netdev_check_unrequested dummy1 $type
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check_err $? "$type stats reported as requested after device request withdrawn"
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nsim_hwstats_disable $instance dummy1 $type
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used after both requests withdrawn"
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log_test "Reporting of $type stats usage"
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}
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l3_reporting_test()
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{
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reporting_test l3
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}
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__fail_next_test()
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{
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local instance=$1; shift
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local type=$1; shift
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RET=0
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used before either device or netdevsim request"
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nsim_hwstats_enable $instance dummy1 $type
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nsim_hwstats_fail_next_enable $instance dummy1 $type
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used before device request"
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netdev_check_unrequested dummy1 $type
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check_err $? "$type stats reported as requested before device request"
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$IP stats set dev dummy1 ${type}_stats on 2>/dev/null
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check_fail $? "$type stats request not bounced as it should have been"
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used after bounce"
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netdev_check_unrequested dummy1 $type
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check_err $? "$type stats reported as requested after bounce"
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$IP stats set dev dummy1 ${type}_stats on
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check_err $? "$type stats request failed when it shouldn't have"
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netdev_check_used dummy1 $type
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check_err $? "$type stats reported as not used after both device and netdevsim request"
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netdev_check_requested dummy1 $type
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check_err $? "$type stats reported as not requested after device request"
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$IP stats set dev dummy1 ${type}_stats off
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nsim_hwstats_disable $instance dummy1 $type
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log_test "Injected failure of $type stats enablement (netdevsim #$instance)"
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}
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fail_next_test()
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{
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__fail_next_test 1 "$@"
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__fail_next_test 2 "$@"
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__fail_next_test 3 "$@"
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}
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l3_fail_next_test()
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{
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fail_next_test l3
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}
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get_hwstat()
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{
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local netdev=$1; shift
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local type=$1; shift
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local selector=$1; shift
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$IP -j stats show dev $netdev group offload subgroup ${type}_stats |
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jq ".[0].stats64.${selector}"
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}
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counter_test()
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{
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local type=$1; shift
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local instance=1
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RET=0
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nsim_hwstats_enable $instance dummy1 $type
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$IP stats set dev dummy1 ${type}_stats on
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netdev_check_used dummy1 $type
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check_err $? "$type stats reported as not used after both device and netdevsim request"
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# Netdevsim counts 10pps on ingress. We should see maybe a couple
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# packets, unless things take a reeealy long time.
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local pkts=$(get_hwstat dummy1 l3 rx.packets)
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((pkts < 10))
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check_err $? "$type stats show >= 10 packets after first enablement"
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sleep 2
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local pkts=$(get_hwstat dummy1 l3 rx.packets)
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((pkts >= 20))
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check_err $? "$type stats show < 20 packets after 2s passed"
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$IP stats set dev dummy1 ${type}_stats off
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sleep 2
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$IP stats set dev dummy1 ${type}_stats on
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local pkts=$(get_hwstat dummy1 l3 rx.packets)
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((pkts < 10))
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check_err $? "$type stats show >= 10 packets after second enablement"
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$IP stats set dev dummy1 ${type}_stats off
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nsim_hwstats_fail_next_enable $instance dummy1 $type
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$IP stats set dev dummy1 ${type}_stats on 2>/dev/null
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check_fail $? "$type stats request not bounced as it should have been"
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sleep 2
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$IP stats set dev dummy1 ${type}_stats on
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local pkts=$(get_hwstat dummy1 l3 rx.packets)
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((pkts < 10))
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check_err $? "$type stats show >= 10 packets after post-fail enablement"
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$IP stats set dev dummy1 ${type}_stats off
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log_test "Counter values in $type stats"
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}
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l3_counter_test()
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{
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counter_test l3
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}
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rollback_test()
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{
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local type=$1; shift
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RET=0
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nsim_hwstats_enable 1 dummy1 l3
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nsim_hwstats_enable 2 dummy1 l3
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nsim_hwstats_enable 3 dummy1 l3
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# The three netdevsim instances are registered in order of their number
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# one after another. It is reasonable to expect that whatever
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# notifications take place hit no. 2 in between hitting nos. 1 and 3,
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# whatever the actual order. This allows us to test that a fail caused
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# by no. 2 does not leave the system in a partial state, and rolls
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# everything back.
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nsim_hwstats_fail_next_enable 2 dummy1 l3
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$IP stats set dev dummy1 ${type}_stats on 2>/dev/null
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check_fail $? "$type stats request not bounced as it should have been"
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netdev_check_unused dummy1 $type
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check_err $? "$type stats reported as used after bounce"
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netdev_check_unrequested dummy1 $type
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check_err $? "$type stats reported as requested after bounce"
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sleep 2
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$IP stats set dev dummy1 ${type}_stats on
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check_err $? "$type stats request not upheld as it should have been"
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local pkts=$(get_hwstat dummy1 l3 rx.packets)
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((pkts < 10))
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check_err $? "$type stats show $pkts packets after post-fail enablement"
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$IP stats set dev dummy1 ${type}_stats off
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nsim_hwstats_disable 3 dummy1 l3
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nsim_hwstats_disable 2 dummy1 l3
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nsim_hwstats_disable 1 dummy1 l3
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log_test "Failure in $type stats enablement rolled back"
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}
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l3_rollback_test()
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{
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rollback_test l3
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}
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l3_monitor_test()
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{
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hw_stats_monitor_test dummy1 l3 \
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"nsim_hwstats_enable 1 dummy1 l3" \
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"nsim_hwstats_disable 1 dummy1 l3" \
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"$IP"
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}
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trap cleanup EXIT
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setup_prepare
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tests_run
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exit $EXIT_STATUS
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@ -1498,3 +1498,63 @@ brmcast_check_sg_state()
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check_err_fail $should_fail $? "Entry $src has blocked flag"
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done
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}
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start_ip_monitor()
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{
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local mtype=$1; shift
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local ip=${1-ip}; shift
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# start the monitor in the background
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tmpfile=`mktemp /var/run/nexthoptestXXX`
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mpid=`($ip monitor $mtype > $tmpfile & echo $!) 2>/dev/null`
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sleep 0.2
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echo "$mpid $tmpfile"
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}
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stop_ip_monitor()
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{
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local mpid=$1; shift
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local tmpfile=$1; shift
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local el=$1; shift
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local what=$1; shift
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sleep 0.2
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kill $mpid
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local lines=`grep '^\w' $tmpfile | wc -l`
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test $lines -eq $el
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check_err $? "$what: $lines lines of events, expected $el"
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rm -rf $tmpfile
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}
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hw_stats_monitor_test()
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{
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local dev=$1; shift
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local type=$1; shift
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local make_suitable=$1; shift
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local make_unsuitable=$1; shift
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local ip=${1-ip}; shift
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RET=0
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# Expect a notification about enablement.
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local ipmout=$(start_ip_monitor stats "$ip")
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$ip stats set dev $dev ${type}_stats on
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stop_ip_monitor $ipmout 1 "${type}_stats enablement"
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# Expect a notification about offload.
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local ipmout=$(start_ip_monitor stats "$ip")
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$make_suitable
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stop_ip_monitor $ipmout 1 "${type}_stats installation"
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# Expect a notification about loss of offload.
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local ipmout=$(start_ip_monitor stats "$ip")
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$make_unsuitable
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stop_ip_monitor $ipmout 1 "${type}_stats deinstallation"
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# Expect a notification about disablement
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local ipmout=$(start_ip_monitor stats "$ip")
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$ip stats set dev $dev ${type}_stats off
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stop_ip_monitor $ipmout 1 "${type}_stats disablement"
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log_test "${type}_stats notifications"
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}
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