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selftests: netdevsim: Add fib_notifications test
Add test to check fib notifications behavior. The test checks route addition, route deletion and route replacement for both IPv4 and IPv6. When fib_notify_on_flag_change=0, expect single notification for route addition/deletion/replacement. When fib_notify_on_flag_change=1, expect: - two notification for route addition/replacement, first without RTM_F_TRAP and second with RTM_F_TRAP. - single notification for route deletion. $ ./fib_notifications.sh TEST: IPv4 route addition [ OK ] TEST: IPv4 route deletion [ OK ] TEST: IPv4 route replacement [ OK ] TEST: IPv6 route addition [ OK ] TEST: IPv6 route deletion [ OK ] TEST: IPv6 route replacement [ OK ] Signed-off-by: Amit Cohen <amcohen@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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tools/testing/selftests/drivers/net/netdevsim/fib_notifications.sh
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| @@ -0,0 +1,300 @@ | ||
| #!/bin/bash | ||
| # SPDX-License-Identifier: GPL-2.0 | ||
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| lib_dir=$(dirname $0)/../../../net/forwarding | ||
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| ALL_TESTS=" | ||
| ipv4_route_addition_test | ||
| ipv4_route_deletion_test | ||
| ipv4_route_replacement_test | ||
| ipv6_route_addition_test | ||
| ipv6_route_deletion_test | ||
| ipv6_route_replacement_test | ||
| " | ||
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| NETDEVSIM_PATH=/sys/bus/netdevsim/ | ||
| DEV_ADDR=1337 | ||
| DEV=netdevsim${DEV_ADDR} | ||
| DEVLINK_DEV=netdevsim/${DEV} | ||
| SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/ | ||
| NUM_NETIFS=0 | ||
| source $lib_dir/lib.sh | ||
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| check_rt_trap() | ||
| { | ||
| local outfile=$1; shift | ||
| local line | ||
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| # Make sure that the first notification was emitted without RTM_F_TRAP | ||
| # flag and the second with RTM_F_TRAP flag | ||
| head -n 1 $outfile | grep -q "rt_trap" | ||
| if [[ $? -eq 0 ]]; then | ||
| return 1 | ||
| fi | ||
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| head -n 2 $outfile | tail -n 1 | grep -q "rt_trap" | ||
| } | ||
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| route_notify_check() | ||
| { | ||
| local outfile=$1; shift | ||
| local expected_num_lines=$1; shift | ||
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| # check the monitor results | ||
| lines=`wc -l $outfile | cut "-d " -f1` | ||
| test $lines -eq $expected_num_lines | ||
| check_err $? "$expected_num_lines notifications were expected but $lines were received" | ||
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| if [[ $expected_num_lines -eq 2 ]]; then | ||
| check_rt_trap $outfile | ||
| check_err $? "Wrong RTM_F_TRAP flags in notifications" | ||
| fi | ||
| } | ||
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| route_addition_check() | ||
| { | ||
| local ip=$1; shift | ||
| local notify=$1; shift | ||
| local route=$1; shift | ||
| local expected_num_notifications=$1; shift | ||
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| ip netns exec testns1 sysctl -qw net.$ip.fib_notify_on_flag_change=$notify | ||
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| local outfile=$(mktemp) | ||
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| $IP monitor route &> $outfile & | ||
| sleep 1 | ||
| $IP route add $route dev dummy1 | ||
| sleep 1 | ||
| kill %% && wait %% &> /dev/null | ||
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| route_notify_check $outfile $expected_num_notifications | ||
| rm -f $outfile | ||
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| $IP route del $route dev dummy1 | ||
| } | ||
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| ipv4_route_addition_test() | ||
| { | ||
| RET=0 | ||
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| local ip="ipv4" | ||
| local route=192.0.2.0/24 | ||
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| # Make sure a single notification will be emitted for the programmed | ||
| # route. | ||
| local notify=0 | ||
| local expected_num_notifications=1 | ||
| # route_addition_check will assign value to RET. | ||
| route_addition_check $ip $notify $route $expected_num_notifications | ||
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| # Make sure two notifications will be emitted for the programmed route. | ||
| notify=1 | ||
| expected_num_notifications=2 | ||
| route_addition_check $ip $notify $route $expected_num_notifications | ||
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| log_test "IPv4 route addition" | ||
| } | ||
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| route_deletion_check() | ||
| { | ||
| local ip=$1; shift | ||
| local notify=$1; shift | ||
| local route=$1; shift | ||
| local expected_num_notifications=$1; shift | ||
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| ip netns exec testns1 sysctl -qw net.$ip.fib_notify_on_flag_change=$notify | ||
| $IP route add $route dev dummy1 | ||
| sleep 1 | ||
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| local outfile=$(mktemp) | ||
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| $IP monitor route &> $outfile & | ||
| sleep 1 | ||
| $IP route del $route dev dummy1 | ||
| sleep 1 | ||
| kill %% && wait %% &> /dev/null | ||
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| route_notify_check $outfile $expected_num_notifications | ||
| rm -f $outfile | ||
| } | ||
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| ipv4_route_deletion_test() | ||
| { | ||
| RET=0 | ||
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| local ip="ipv4" | ||
| local route=192.0.2.0/24 | ||
| local expected_num_notifications=1 | ||
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| # Make sure a single notification will be emitted for the deleted route, | ||
| # regardless of fib_notify_on_flag_change value. | ||
| local notify=0 | ||
| # route_deletion_check will assign value to RET. | ||
| route_deletion_check $ip $notify $route $expected_num_notifications | ||
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| notify=1 | ||
| route_deletion_check $ip $notify $route $expected_num_notifications | ||
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| log_test "IPv4 route deletion" | ||
| } | ||
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| route_replacement_check() | ||
| { | ||
| local ip=$1; shift | ||
| local notify=$1; shift | ||
| local route=$1; shift | ||
| local expected_num_notifications=$1; shift | ||
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| ip netns exec testns1 sysctl -qw net.$ip.fib_notify_on_flag_change=$notify | ||
| $IP route add $route dev dummy1 | ||
| sleep 1 | ||
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| local outfile=$(mktemp) | ||
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| $IP monitor route &> $outfile & | ||
| sleep 1 | ||
| $IP route replace $route dev dummy2 | ||
| sleep 1 | ||
| kill %% && wait %% &> /dev/null | ||
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| route_notify_check $outfile $expected_num_notifications | ||
| rm -f $outfile | ||
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| $IP route del $route dev dummy2 | ||
| } | ||
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| ipv4_route_replacement_test() | ||
| { | ||
| RET=0 | ||
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| local ip="ipv4" | ||
| local route=192.0.2.0/24 | ||
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| $IP link add name dummy2 type dummy | ||
| $IP link set dev dummy2 up | ||
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| # Make sure a single notification will be emitted for the new route. | ||
| local notify=0 | ||
| local expected_num_notifications=1 | ||
| # route_replacement_check will assign value to RET. | ||
| route_replacement_check $ip $notify $route $expected_num_notifications | ||
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| # Make sure two notifications will be emitted for the new route. | ||
| notify=1 | ||
| expected_num_notifications=2 | ||
| route_replacement_check $ip $notify $route $expected_num_notifications | ||
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| $IP link del name dummy2 | ||
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| log_test "IPv4 route replacement" | ||
| } | ||
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| ipv6_route_addition_test() | ||
| { | ||
| RET=0 | ||
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| local ip="ipv6" | ||
| local route=2001:db8:1::/64 | ||
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| # Make sure a single notification will be emitted for the programmed | ||
| # route. | ||
| local notify=0 | ||
| local expected_num_notifications=1 | ||
| route_addition_check $ip $notify $route $expected_num_notifications | ||
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| # Make sure two notifications will be emitted for the programmed route. | ||
| notify=1 | ||
| expected_num_notifications=2 | ||
| route_addition_check $ip $notify $route $expected_num_notifications | ||
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| log_test "IPv6 route addition" | ||
| } | ||
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| ipv6_route_deletion_test() | ||
| { | ||
| RET=0 | ||
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| local ip="ipv6" | ||
| local route=2001:db8:1::/64 | ||
| local expected_num_notifications=1 | ||
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| # Make sure a single notification will be emitted for the deleted route, | ||
| # regardless of fib_notify_on_flag_change value. | ||
| local notify=0 | ||
| route_deletion_check $ip $notify $route $expected_num_notifications | ||
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| notify=1 | ||
| route_deletion_check $ip $notify $route $expected_num_notifications | ||
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| log_test "IPv6 route deletion" | ||
| } | ||
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| ipv6_route_replacement_test() | ||
| { | ||
| RET=0 | ||
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| local ip="ipv6" | ||
| local route=2001:db8:1::/64 | ||
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| $IP link add name dummy2 type dummy | ||
| $IP link set dev dummy2 up | ||
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| # Make sure a single notification will be emitted for the new route. | ||
| local notify=0 | ||
| local expected_num_notifications=1 | ||
| route_replacement_check $ip $notify $route $expected_num_notifications | ||
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| # Make sure two notifications will be emitted for the new route. | ||
| notify=1 | ||
| expected_num_notifications=2 | ||
| route_replacement_check $ip $notify $route $expected_num_notifications | ||
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| $IP link del name dummy2 | ||
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| log_test "IPv6 route replacement" | ||
| } | ||
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| setup_prepare() | ||
| { | ||
| modprobe netdevsim &> /dev/null | ||
| echo "$DEV_ADDR 1" > ${NETDEVSIM_PATH}/new_device | ||
| while [ ! -d $SYSFS_NET_DIR ] ; do :; done | ||
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| ip netns add testns1 | ||
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| if [ $? -ne 0 ]; then | ||
| echo "Failed to add netns \"testns1\"" | ||
| exit 1 | ||
| fi | ||
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| devlink dev reload $DEVLINK_DEV netns testns1 | ||
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| if [ $? -ne 0 ]; then | ||
| echo "Failed to reload into netns \"testns1\"" | ||
| exit 1 | ||
| fi | ||
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| IP="ip -n testns1" | ||
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| $IP link add name dummy1 type dummy | ||
| $IP link set dev dummy1 up | ||
| } | ||
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| cleanup() | ||
| { | ||
| pre_cleanup | ||
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| $IP link del name dummy1 | ||
| ip netns del testns1 | ||
| echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device | ||
| modprobe -r netdevsim &> /dev/null | ||
| } | ||
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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 |