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selftests: netdevsim: Add test cases for devlink-trap policers
Add test cases for packet trap policer set / show commands as well as for the binding of these policers to packet trap groups. Both good and bad flows are tested for maximum coverage. v2: * Add test case with new 'fail_trap_policer_set' knob * Add test case for partially modified trap group Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel
David S. Miller
parent
0dc8249a2e
commit
5fbff58e27
@ -16,6 +16,8 @@ ALL_TESTS="
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trap_group_action_test
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bad_trap_group_test
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trap_group_stats_test
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trap_policer_test
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trap_policer_bind_test
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port_del_test
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dev_del_test
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"
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@ -23,6 +25,7 @@ NETDEVSIM_PATH=/sys/bus/netdevsim/
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DEV_ADDR=1337
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DEV=netdevsim${DEV_ADDR}
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DEVLINK_DEV=netdevsim/${DEV}
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DEBUGFS_DIR=/sys/kernel/debug/netdevsim/$DEV/
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SLEEP_TIME=1
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NETDEV=""
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NUM_NETIFS=0
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@ -256,6 +259,119 @@ trap_group_stats_test()
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log_test "Trap group statistics"
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}
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trap_policer_test()
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{
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local packets_t0
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local packets_t1
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if [ $(devlink_trap_policers_num_get) -eq 0 ]; then
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check_err 1 "Failed to dump policers"
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fi
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devlink trap policer set $DEVLINK_DEV policer 1337 &> /dev/null
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check_fail $? "Did not get an error for setting a non-existing policer"
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devlink trap policer show $DEVLINK_DEV policer 1337 &> /dev/null
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check_fail $? "Did not get an error for getting a non-existing policer"
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devlink trap policer set $DEVLINK_DEV policer 1 rate 2000 burst 16
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check_err $? "Failed to set valid parameters for a valid policer"
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if [ $(devlink_trap_policer_rate_get 1) -ne 2000 ]; then
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check_err 1 "Policer rate was not changed"
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fi
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if [ $(devlink_trap_policer_burst_get 1) -ne 16 ]; then
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check_err 1 "Policer burst size was not changed"
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fi
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devlink trap policer set $DEVLINK_DEV policer 1 rate 0 &> /dev/null
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check_fail $? "Policer rate was changed to rate lower than limit"
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devlink trap policer set $DEVLINK_DEV policer 1 rate 9000 &> /dev/null
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check_fail $? "Policer rate was changed to rate higher than limit"
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devlink trap policer set $DEVLINK_DEV policer 1 burst 2 &> /dev/null
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check_fail $? "Policer burst size was changed to burst size lower than limit"
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devlink trap policer set $DEVLINK_DEV policer 1 rate 65537 &> /dev/null
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check_fail $? "Policer burst size was changed to burst size higher than limit"
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echo "y" > $DEBUGFS_DIR/fail_trap_policer_set
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devlink trap policer set $DEVLINK_DEV policer 1 rate 3000 &> /dev/null
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check_fail $? "Managed to set policer rate when should not"
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echo "n" > $DEBUGFS_DIR/fail_trap_policer_set
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if [ $(devlink_trap_policer_rate_get 1) -ne 2000 ]; then
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check_err 1 "Policer rate was changed to an invalid value"
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fi
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if [ $(devlink_trap_policer_burst_get 1) -ne 16 ]; then
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check_err 1 "Policer burst size was changed to an invalid value"
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fi
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packets_t0=$(devlink_trap_policer_rx_dropped_get 1)
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sleep .5
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packets_t1=$(devlink_trap_policer_rx_dropped_get 1)
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if [ ! $packets_t1 -gt $packets_t0 ]; then
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check_err 1 "Policer drop counter was not incremented"
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fi
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echo "y"> $DEBUGFS_DIR/fail_trap_policer_counter_get
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devlink -s trap policer show $DEVLINK_DEV policer 1 &> /dev/null
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check_fail $? "Managed to read policer drop counter when should not"
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echo "n"> $DEBUGFS_DIR/fail_trap_policer_counter_get
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devlink -s trap policer show $DEVLINK_DEV policer 1 &> /dev/null
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check_err $? "Did not manage to read policer drop counter when should"
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log_test "Trap policer"
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}
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trap_group_check_policer()
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{
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local group_name=$1; shift
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devlink -j -p trap group show $DEVLINK_DEV group $group_name \
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| jq -e '.[][][]["policer"]' &> /dev/null
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}
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trap_policer_bind_test()
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{
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devlink trap group set $DEVLINK_DEV group l2_drops policer 1
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check_err $? "Failed to bind a valid policer"
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if [ $(devlink_trap_group_policer_get "l2_drops") -ne 1 ]; then
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check_err 1 "Bound policer was not changed"
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fi
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devlink trap group set $DEVLINK_DEV group l2_drops policer 1337 \
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&> /dev/null
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check_fail $? "Did not get an error for binding a non-existing policer"
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if [ $(devlink_trap_group_policer_get "l2_drops") -ne 1 ]; then
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check_err 1 "Bound policer was changed when should not"
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fi
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devlink trap group set $DEVLINK_DEV group l2_drops policer 0
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check_err $? "Failed to unbind a policer when using ID 0"
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trap_group_check_policer "l2_drops"
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check_fail $? "Trap group has a policer after unbinding with ID 0"
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devlink trap group set $DEVLINK_DEV group l2_drops policer 1
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check_err $? "Failed to bind a valid policer"
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devlink trap group set $DEVLINK_DEV group l2_drops nopolicer
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check_err $? "Failed to unbind a policer when using 'nopolicer' keyword"
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trap_group_check_policer "l2_drops"
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check_fail $? "Trap group has a policer after unbinding with 'nopolicer' keyword"
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devlink trap group set $DEVLINK_DEV group l2_drops policer 1
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check_err $? "Failed to bind a valid policer"
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echo "y"> $DEBUGFS_DIR/fail_trap_group_set
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devlink trap group set $DEVLINK_DEV group l2_drops policer 2 \
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&> /dev/null
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check_fail $? "Managed to bind a policer when should not"
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echo "n"> $DEBUGFS_DIR/fail_trap_group_set
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devlink trap group set $DEVLINK_DEV group l2_drops policer 2
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check_err $? "Did not manage to bind a policer when should"
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devlink trap group set $DEVLINK_DEV group l2_drops action drop \
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policer 1337 &> /dev/null
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check_fail $? "Did not get an error for partially modified trap group"
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log_test "Trap policer binding"
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}
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port_del_test()
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{
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local group_name
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@ -420,6 +420,43 @@ devlink_trap_drop_cleanup()
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tc filter del dev $dev egress protocol $proto pref $pref handle $handle flower
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}
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devlink_trap_policers_num_get()
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{
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devlink -j -p trap policer show | jq '.[]["'$DEVLINK_DEV'"] | length'
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}
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devlink_trap_policer_rate_get()
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{
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local policer_id=$1; shift
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devlink -j -p trap policer show $DEVLINK_DEV policer $policer_id \
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| jq '.[][][]["rate"]'
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}
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devlink_trap_policer_burst_get()
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{
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local policer_id=$1; shift
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devlink -j -p trap policer show $DEVLINK_DEV policer $policer_id \
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| jq '.[][][]["burst"]'
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}
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devlink_trap_policer_rx_dropped_get()
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{
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local policer_id=$1; shift
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devlink -j -p -s trap policer show $DEVLINK_DEV policer $policer_id \
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| jq '.[][][]["stats"]["rx"]["dropped"]'
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}
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devlink_trap_group_policer_get()
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{
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local group_name=$1; shift
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devlink -j -p trap group show $DEVLINK_DEV group $group_name \
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| jq '.[][][]["policer"]'
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}
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devlink_port_by_netdev()
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{
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local if_name=$1
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