#!/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
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