OSCL-LXR linux-6.0.1/​tools/​testing/​selftests/​drivers/​net/​netdevsim/​devlink_trap.sh	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 #!/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

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