Commit 9ee53e37 authored by Amit Cohen's avatar Amit Cohen Committed by David S. Miller
Browse files

selftests: netdevsim: Test route offload failure notifications 



Add cases to verify that when debugfs variable "fail_route_offload" is
set, notification with "rt_offload_failed" flag is received.

Extend the existing cases to verify that when sysctl
"fib_notify_on_flag_change" is set to 2, the kernel emits notifications
only for failed route installation.

$ ./fib_notifications.sh
TEST: IPv4 route addition				[ OK ]
TEST: IPv4 route deletion				[ OK ]
TEST: IPv4 route replacement				[ OK ]
TEST: IPv4 route offload failed				[ OK ]
TEST: IPv6 route addition				[ OK ]
TEST: IPv6 route deletion				[ OK ]
TEST: IPv6 route replacement				[ OK ]
TEST: IPv6 route offload failed				[ OK ]

Signed-off-by: default avatarAmit Cohen <amcohen@nvidia.com>
Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a4cb1c02

tools/testing/selftests/drivers/net/netdevsim/fib_notifications.sh

+132 −2
Original line number Diff line number Diff line
@@ -7,9 +7,11 @@ ALL_TESTS=" 
	ipv4_route_addition_test

	ipv4_route_deletion_test

	ipv4_route_replacement_test

	ipv4_route_offload_failed_test

	ipv6_route_addition_test

	ipv6_route_deletion_test

	ipv6_route_replacement_test

	ipv6_route_offload_failed_test

"



NETDEVSIM_PATH=/sys/bus/netdevsim/
@@ -17,9 +19,26 @@ DEV_ADDR=1337 
DEV=netdevsim${DEV_ADDR}

DEVLINK_DEV=netdevsim/${DEV}

SYSFS_NET_DIR=/sys/bus/netdevsim/devices/$DEV/net/

DEBUGFS_DIR=/sys/kernel/debug/netdevsim/$DEV/

NUM_NETIFS=0

source $lib_dir/lib.sh



check_rt_offload_failed()

{

	local outfile=$1; shift

	local line



	# Make sure that the first notification was emitted without

	# RTM_F_OFFLOAD_FAILED flag and the second with RTM_F_OFFLOAD_FAILED

	# flag

	head -n 1 $outfile | grep -q "rt_offload_failed"

	if [[ $? -eq 0 ]]; then

		return 1

	fi



	head -n 2 $outfile | tail -n 1 | grep -q "rt_offload_failed"

}



check_rt_trap()

{

	local outfile=$1; shift
@@ -39,15 +58,23 @@ route_notify_check() 
{

	local outfile=$1; shift

	local expected_num_lines=$1; shift

	local offload_failed=${1:-0}; shift



	# 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"



	if [[ $expected_num_lines -eq 2 ]]; then

	if [[ $expected_num_lines -eq 1 ]]; then

		return

	fi



	if [[ $offload_failed -eq 0 ]]; then

		check_rt_trap $outfile

		check_err $? "Wrong RTM_F_TRAP flags in notifications"

	else

		check_rt_offload_failed $outfile

		check_err $? "Wrong RTM_F_OFFLOAD_FAILED flags in notifications"

	fi

}
@@ -57,6 +84,7 @@ route_addition_check() 
	local notify=$1; shift

	local route=$1; shift

	local expected_num_notifications=$1; shift

	local offload_failed=${1:-0}; shift



	ip netns exec testns1 sysctl -qw net.$ip.fib_notify_on_flag_change=$notify
@@ -68,7 +96,7 @@ route_addition_check() 
	sleep 1

	kill %% && wait %% &> /dev/null



	route_notify_check $outfile $expected_num_notifications

	route_notify_check $outfile $expected_num_notifications $offload_failed

	rm -f $outfile



	$IP route del $route dev dummy1
@@ -93,6 +121,13 @@ ipv4_route_addition_test() 
	expected_num_notifications=2

	route_addition_check $ip $notify $route $expected_num_notifications



	# notify=2 means emit notifications only for failed route installation,

	# make sure a single notification will be emitted for the programmed

	# route.

	notify=2

	expected_num_notifications=1

	route_addition_check $ip $notify $route $expected_num_notifications



	log_test "IPv4 route addition"

}
@@ -185,11 +220,55 @@ ipv4_route_replacement_test() 
	expected_num_notifications=2

	route_replacement_check $ip $notify $route $expected_num_notifications



	# notify=2 means emit notifications only for failed route installation,

	# make sure a single notification will be emitted for the new route.

	notify=2

	expected_num_notifications=1

	route_replacement_check $ip $notify $route $expected_num_notifications



	$IP link del name dummy2



	log_test "IPv4 route replacement"

}



ipv4_route_offload_failed_test()

{



	RET=0



	local ip="ipv4"

	local route=192.0.2.0/24

	local offload_failed=1



	echo "y"> $DEBUGFS_DIR/fib/fail_route_offload

	check_err $? "Failed to setup route offload to fail"



	# 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 \

		$offload_failed



	# Make sure two notifications will be emitted for the new route.

	notify=1

	expected_num_notifications=2

	route_addition_check $ip $notify $route $expected_num_notifications \

		$offload_failed



	# notify=2 means emit notifications only for failed route installation,

	# make sure two notifications will be emitted for the new route.

	notify=2

	expected_num_notifications=2

	route_addition_check $ip $notify $route $expected_num_notifications \

		$offload_failed



	echo "n"> $DEBUGFS_DIR/fib/fail_route_offload

	check_err $? "Failed to setup route offload not to fail"



	log_test "IPv4 route offload failed"

}



ipv6_route_addition_test()

{

	RET=0
@@ -208,6 +287,13 @@ ipv6_route_addition_test() 
	expected_num_notifications=2

	route_addition_check $ip $notify $route $expected_num_notifications



	# notify=2 means emit notifications only for failed route installation,

	# make sure a single notification will be emitted for the programmed

	# route.

	notify=2

	expected_num_notifications=1

	route_addition_check $ip $notify $route $expected_num_notifications



	log_test "IPv6 route addition"

}
@@ -250,11 +336,55 @@ ipv6_route_replacement_test() 
	expected_num_notifications=2

	route_replacement_check $ip $notify $route $expected_num_notifications



	# notify=2 means emit notifications only for failed route installation,

	# make sure a single notification will be emitted for the new route.

	notify=2

	expected_num_notifications=1

	route_replacement_check $ip $notify $route $expected_num_notifications



	$IP link del name dummy2



	log_test "IPv6 route replacement"

}



ipv6_route_offload_failed_test()

{



	RET=0



	local ip="ipv6"

	local route=2001:db8:1::/64

	local offload_failed=1



	echo "y"> $DEBUGFS_DIR/fib/fail_route_offload

	check_err $? "Failed to setup route offload to fail"



	# 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 \

		$offload_failed



	# Make sure two notifications will be emitted for the new route.

	notify=1

	expected_num_notifications=2

	route_addition_check $ip $notify $route $expected_num_notifications \

		$offload_failed



	# notify=2 means emit notifications only for failed route installation,

	# make sure two notifications will be emitted for the new route.

	notify=2

	expected_num_notifications=2

	route_addition_check $ip $notify $route $expected_num_notifications \

		$offload_failed



	echo "n"> $DEBUGFS_DIR/fib/fail_route_offload

	check_err $? "Failed to setup route offload not to fail"



	log_test "IPv6 route offload failed"

}



setup_prepare()

{

	modprobe netdevsim &> /dev/null