Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 501 insertions, 0 deletions

diff --git a/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh b/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh
new file mode 100755
index 000000000..109900c81
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh
@@ -0,0 +1,501 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# This test is for checking devlink-trap functionality. It makes use of
+# netdevsim which implements the required callbacks.
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+ALL_TESTS="
+	init_test
+	trap_action_test
+	trap_metadata_test
+	bad_trap_test
+	bad_trap_action_test
+	trap_stats_test
+	trap_group_action_test
+	bad_trap_group_test
+	trap_group_stats_test
+	trap_policer_test
+	trap_policer_bind_test
+	port_del_test
+	dev_del_test
+"
+NETDEVSIM_PATH=/sys/bus/netdevsim/
+DEV_ADDR=1337
+DEV=netdevsim${DEV_ADDR}
+DEBUGFS_DIR=/sys/kernel/debug/netdevsim/$DEV/
+SLEEP_TIME=1
+NETDEV=""
+NUM_NETIFS=0
+source $lib_dir/lib.sh
+
+DEVLINK_DEV=
+source $lib_dir/devlink_lib.sh
+DEVLINK_DEV=netdevsim/${DEV}
+
+require_command udevadm
+
+modprobe netdevsim &> /dev/null
+if [ ! -d "$NETDEVSIM_PATH" ]; then
+	echo "SKIP: No netdevsim support"
+	exit 1
+fi
+
+if [ -d "${NETDEVSIM_PATH}/devices/netdevsim${DEV_ADDR}" ]; then
+	echo "SKIP: Device netdevsim${DEV_ADDR} already exists"
+	exit 1
+fi
+
+init_test()
+{
+	RET=0
+
+	test $(devlink_traps_num_get) -ne 0
+	check_err $? "No traps were registered"
+
+	log_test "Initialization"
+}
+
+trap_action_test()
+{
+	local orig_action
+	local trap_name
+	local action
+
+	RET=0
+
+	for trap_name in $(devlink_traps_get); do
+		# The action of non-drop traps cannot be changed.
+		if [ $(devlink_trap_type_get $trap_name) = "drop" ]; then
+			devlink_trap_action_set $trap_name "trap"
+			action=$(devlink_trap_action_get $trap_name)
+			if [ $action != "trap" ]; then
+				check_err 1 "Trap $trap_name did not change action to trap"
+			fi
+
+			devlink_trap_action_set $trap_name "drop"
+			action=$(devlink_trap_action_get $trap_name)
+			if [ $action != "drop" ]; then
+				check_err 1 "Trap $trap_name did not change action to drop"
+			fi
+		else
+			orig_action=$(devlink_trap_action_get $trap_name)
+
+			devlink_trap_action_set $trap_name "trap"
+			action=$(devlink_trap_action_get $trap_name)
+			if [ $action != $orig_action ]; then
+				check_err 1 "Trap $trap_name changed action when should not"
+			fi
+
+			devlink_trap_action_set $trap_name "drop"
+			action=$(devlink_trap_action_get $trap_name)
+			if [ $action != $orig_action ]; then
+				check_err 1 "Trap $trap_name changed action when should not"
+			fi
+		fi
+	done
+
+	log_test "Trap action"
+}
+
+trap_metadata_test()
+{
+	local trap_name
+
+	RET=0
+
+	for trap_name in $(devlink_traps_get); do
+		devlink_trap_metadata_test $trap_name "input_port"
+		check_err $? "Input port not reported as metadata of trap $trap_name"
+		if [ $trap_name == "ingress_flow_action_drop" ] ||
+		   [ $trap_name == "egress_flow_action_drop" ]; then
+			devlink_trap_metadata_test $trap_name "flow_action_cookie"
+			check_err $? "Flow action cookie not reported as metadata of trap $trap_name"
+		fi
+	done
+
+	log_test "Trap metadata"
+}
+
+bad_trap_test()
+{
+	RET=0
+
+	devlink_trap_action_set "made_up_trap" "drop"
+	check_fail $? "Did not get an error for non-existing trap"
+
+	log_test "Non-existing trap"
+}
+
+bad_trap_action_test()
+{
+	local traps_arr
+	local trap_name
+
+	RET=0
+
+	# Pick first trap.
+	traps_arr=($(devlink_traps_get))
+	trap_name=${traps_arr[0]}
+
+	devlink_trap_action_set $trap_name "made_up_action"
+	check_fail $? "Did not get an error for non-existing trap action"
+
+	log_test "Non-existing trap action"
+}
+
+trap_stats_test()
+{
+	local trap_name
+
+	RET=0
+
+	for trap_name in $(devlink_traps_get); do
+		devlink_trap_stats_idle_test $trap_name
+		check_err $? "Stats of trap $trap_name not idle when netdev down"
+
+		ip link set dev $NETDEV up
+
+		if [ $(devlink_trap_type_get $trap_name) = "drop" ]; then
+			devlink_trap_action_set $trap_name "trap"
+			devlink_trap_stats_idle_test $trap_name
+			check_fail $? "Stats of trap $trap_name idle when action is trap"
+
+			devlink_trap_action_set $trap_name "drop"
+			devlink_trap_stats_idle_test $trap_name
+			check_err $? "Stats of trap $trap_name not idle when action is drop"
+
+			echo "y"> $DEBUGFS_DIR/fail_trap_drop_counter_get
+			devlink -s trap show $DEVLINK_DEV trap $trap_name &> /dev/null
+			check_fail $? "Managed to read trap (hard dropped) statistics when should not"
+			echo "n"> $DEBUGFS_DIR/fail_trap_drop_counter_get
+			devlink -s trap show $DEVLINK_DEV trap $trap_name &> /dev/null
+			check_err $? "Did not manage to read trap (hard dropped) statistics when should"
+
+			devlink_trap_drop_stats_idle_test $trap_name
+			check_fail $? "Drop stats of trap $trap_name idle when should not"
+		else
+			devlink_trap_stats_idle_test $trap_name
+			check_fail $? "Stats of non-drop trap $trap_name idle when should not"
+		fi
+
+		ip link set dev $NETDEV down
+	done
+
+	log_test "Trap statistics"
+}
+
+trap_group_action_test()
+{
+	local curr_group group_name
+	local trap_name
+	local trap_type
+	local action
+
+	RET=0
+
+	for group_name in $(devlink_trap_groups_get); do
+		devlink_trap_group_action_set $group_name "trap"
+
+		for trap_name in $(devlink_traps_get); do
+			curr_group=$(devlink_trap_group_get $trap_name)
+			if [ $curr_group != $group_name ]; then
+				continue
+			fi
+
+			trap_type=$(devlink_trap_type_get $trap_name)
+			if [ $trap_type != "drop" ]; then
+				continue
+			fi
+
+			action=$(devlink_trap_action_get $trap_name)
+			if [ $action != "trap" ]; then
+				check_err 1 "Trap $trap_name did not change action to trap"
+			fi
+		done
+
+		devlink_trap_group_action_set $group_name "drop"
+
+		for trap_name in $(devlink_traps_get); do
+			curr_group=$(devlink_trap_group_get $trap_name)
+			if [ $curr_group != $group_name ]; then
+				continue
+			fi
+
+			trap_type=$(devlink_trap_type_get $trap_name)
+			if [ $trap_type != "drop" ]; then
+				continue
+			fi
+
+			action=$(devlink_trap_action_get $trap_name)
+			if [ $action != "drop" ]; then
+				check_err 1 "Trap $trap_name did not change action to drop"
+			fi
+		done
+	done
+
+	log_test "Trap group action"
+}
+
+bad_trap_group_test()
+{
+	RET=0
+
+	devlink_trap_group_action_set "made_up_trap_group" "drop"
+	check_fail $? "Did not get an error for non-existing trap group"
+
+	log_test "Non-existing trap group"
+}
+
+trap_group_stats_test()
+{
+	local group_name
+
+	RET=0
+
+	for group_name in $(devlink_trap_groups_get); do
+		devlink_trap_group_stats_idle_test $group_name
+		check_err $? "Stats of trap group $group_name not idle when netdev down"
+
+		ip link set dev $NETDEV up
+
+		devlink_trap_group_action_set $group_name "trap"
+		devlink_trap_group_stats_idle_test $group_name
+		check_fail $? "Stats of trap group $group_name idle when action is trap"
+
+		devlink_trap_group_action_set $group_name "drop"
+		ip link set dev $NETDEV down
+	done
+
+	log_test "Trap group statistics"
+}
+
+trap_policer_test()
+{
+	local packets_t0
+	local packets_t1
+
+	RET=0
+
+	if [ $(devlink_trap_policers_num_get) -eq 0 ]; then
+		check_err 1 "Failed to dump policers"
+	fi
+
+	devlink trap policer set $DEVLINK_DEV policer 1337 &> /dev/null
+	check_fail $? "Did not get an error for setting a non-existing policer"
+	devlink trap policer show $DEVLINK_DEV policer 1337 &> /dev/null
+	check_fail $? "Did not get an error for getting a non-existing policer"
+
+	devlink trap policer set $DEVLINK_DEV policer 1 rate 2000 burst 16
+	check_err $? "Failed to set valid parameters for a valid policer"
+	if [ $(devlink_trap_policer_rate_get 1) -ne 2000 ]; then
+		check_err 1 "Policer rate was not changed"
+	fi
+	if [ $(devlink_trap_policer_burst_get 1) -ne 16 ]; then
+		check_err 1 "Policer burst size was not changed"
+	fi
+
+	devlink trap policer set $DEVLINK_DEV policer 1 rate 0 &> /dev/null
+	check_fail $? "Policer rate was changed to rate lower than limit"
+	devlink trap policer set $DEVLINK_DEV policer 1 rate 9000 &> /dev/null
+	check_fail $? "Policer rate was changed to rate higher than limit"
+	devlink trap policer set $DEVLINK_DEV policer 1 burst 2 &> /dev/null
+	check_fail $? "Policer burst size was changed to burst size lower than limit"
+	devlink trap policer set $DEVLINK_DEV policer 1 rate 65537 &> /dev/null
+	check_fail $? "Policer burst size was changed to burst size higher than limit"
+	echo "y" > $DEBUGFS_DIR/fail_trap_policer_set
+	devlink trap policer set $DEVLINK_DEV policer 1 rate 3000 &> /dev/null
+	check_fail $? "Managed to set policer rate when should not"
+	echo "n" > $DEBUGFS_DIR/fail_trap_policer_set
+	if [ $(devlink_trap_policer_rate_get 1) -ne 2000 ]; then
+		check_err 1 "Policer rate was changed to an invalid value"
+	fi
+	if [ $(devlink_trap_policer_burst_get 1) -ne 16 ]; then
+		check_err 1 "Policer burst size was changed to an invalid value"
+	fi
+
+	packets_t0=$(devlink_trap_policer_rx_dropped_get 1)
+	sleep .5
+	packets_t1=$(devlink_trap_policer_rx_dropped_get 1)
+	if [ ! $packets_t1 -gt $packets_t0 ]; then
+		check_err 1 "Policer drop counter was not incremented"
+	fi
+
+	echo "y"> $DEBUGFS_DIR/fail_trap_policer_counter_get
+	devlink -s trap policer show $DEVLINK_DEV policer 1 &> /dev/null
+	check_fail $? "Managed to read policer drop counter when should not"
+	echo "n"> $DEBUGFS_DIR/fail_trap_policer_counter_get
+	devlink -s trap policer show $DEVLINK_DEV policer 1 &> /dev/null
+	check_err $? "Did not manage to read policer drop counter when should"
+
+	log_test "Trap policer"
+}
+
+trap_group_check_policer()
+{
+	local group_name=$1; shift
+
+	devlink -j -p trap group show $DEVLINK_DEV group $group_name \
+		| jq -e '.[][][]["policer"]' &> /dev/null
+}
+
+trap_policer_bind_test()
+{
+	RET=0
+
+	devlink trap group set $DEVLINK_DEV group l2_drops policer 1
+	check_err $? "Failed to bind a valid policer"
+	if [ $(devlink_trap_group_policer_get "l2_drops") -ne 1 ]; then
+		check_err 1 "Bound policer was not changed"
+	fi
+
+	devlink trap group set $DEVLINK_DEV group l2_drops policer 1337 \
+		&> /dev/null
+	check_fail $? "Did not get an error for binding a non-existing policer"
+	if [ $(devlink_trap_group_policer_get "l2_drops") -ne 1 ]; then
+		check_err 1 "Bound policer was changed when should not"
+	fi
+
+	devlink trap group set $DEVLINK_DEV group l2_drops policer 0
+	check_err $? "Failed to unbind a policer when using ID 0"
+	trap_group_check_policer "l2_drops"
+	check_fail $? "Trap group has a policer after unbinding with ID 0"
+
+	devlink trap group set $DEVLINK_DEV group l2_drops policer 1
+	check_err $? "Failed to bind a valid policer"
+
+	devlink trap group set $DEVLINK_DEV group l2_drops nopolicer
+	check_err $? "Failed to unbind a policer when using 'nopolicer' keyword"
+	trap_group_check_policer "l2_drops"
+	check_fail $? "Trap group has a policer after unbinding with 'nopolicer' keyword"
+
+	devlink trap group set $DEVLINK_DEV group l2_drops policer 1
+	check_err $? "Failed to bind a valid policer"
+
+	echo "y"> $DEBUGFS_DIR/fail_trap_group_set
+	devlink trap group set $DEVLINK_DEV group l2_drops policer 2 \
+		&> /dev/null
+	check_fail $? "Managed to bind a policer when should not"
+	echo "n"> $DEBUGFS_DIR/fail_trap_group_set
+	devlink trap group set $DEVLINK_DEV group l2_drops policer 2
+	check_err $? "Did not manage to bind a policer when should"
+
+	devlink trap group set $DEVLINK_DEV group l2_drops action drop \
+		policer 1337 &> /dev/null
+	check_fail $? "Did not get an error for partially modified trap group"
+
+	log_test "Trap policer binding"
+}
+
+port_del_test()
+{
+	local group_name
+	local i
+
+	# The test never fails. It is meant to exercise different code paths
+	# and make sure we properly dismantle a port while packets are
+	# in-flight.
+	RET=0
+
+	devlink_traps_enable_all
+
+	for i in $(seq 1 10); do
+		ip link set dev $NETDEV up
+
+		sleep $SLEEP_TIME
+
+		netdevsim_port_destroy
+		netdevsim_port_create
+		udevadm settle
+	done
+
+	devlink_traps_disable_all
+
+	log_test "Port delete"
+}
+
+dev_del_test()
+{
+	local group_name
+	local i
+
+	# The test never fails. It is meant to exercise different code paths
+	# and make sure we properly unregister traps while packets are
+	# in-flight.
+	RET=0
+
+	devlink_traps_enable_all
+
+	for i in $(seq 1 10); do
+		ip link set dev $NETDEV up
+
+		sleep $SLEEP_TIME
+
+		cleanup
+		setup_prepare
+	done
+
+	devlink_traps_disable_all
+
+	log_test "Device delete"
+}
+
+netdevsim_dev_create()
+{
+	echo "$DEV_ADDR 0" > ${NETDEVSIM_PATH}/new_device
+}
+
+netdevsim_dev_destroy()
+{
+	echo "$DEV_ADDR" > ${NETDEVSIM_PATH}/del_device
+}
+
+netdevsim_port_create()
+{
+	echo 1 > ${NETDEVSIM_PATH}/devices/${DEV}/new_port
+}
+
+netdevsim_port_destroy()
+{
+	echo 1 > ${NETDEVSIM_PATH}/devices/${DEV}/del_port
+}
+
+setup_prepare()
+{
+	local netdev
+
+	netdevsim_dev_create
+
+	if [ ! -d "${NETDEVSIM_PATH}/devices/${DEV}" ]; then
+		echo "Failed to create netdevsim device"
+		exit 1
+	fi
+
+	netdevsim_port_create
+
+	if [ ! -d "${NETDEVSIM_PATH}/devices/${DEV}/net/" ]; then
+		echo "Failed to create netdevsim port"
+		exit 1
+	fi
+
+	# Wait for udev to rename newly created netdev.
+	udevadm settle
+
+	NETDEV=$(ls ${NETDEVSIM_PATH}/devices/${DEV}/net/)
+}
+
+cleanup()
+{
+	pre_cleanup
+	netdevsim_port_destroy
+	netdevsim_dev_destroy
+}
+
+trap cleanup EXIT
+
+setup_prepare
+
+tests_run
+
+exit $EXIT_STATUS