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From:   Oleksandr Mazur <oleksandr.mazur@plvision.eu>
To:     oleksandr.mazur@plvision.eu, jiri@nvidia.com, davem@davemloft.net,
        kuba@kernel.org, Shuah Khan <shuah@kernel.org>
Cc:     netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        Vadym Kochan <vadym.kochan@plvision.eu>, andrew@lunn.ch,
        nikolay@nvidia.com, idosch@idosch.org,
        linux-kselftest@vger.kernel.org
Subject: [PATCH net-next v2 4/7] testing: selftests: drivers: net: netdevsim: devlink: add test case for hard drop statistics
Date:   Mon, 14 Jun 2021 16:01:15 +0300
Message-Id: <20210614130118.20395-5-oleksandr.mazur@plvision.eu>
In-Reply-To: <20210614130118.20395-1-oleksandr.mazur@plvision.eu>
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Add hard drop counter check testcase, to make sure netdevsim driver
properly handles the devlink hard drop counters get/set callbacks.

Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
---
 .../selftests/drivers/net/netdevsim/devlink_trap.sh    | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh b/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh
index 6165901a1cf3..109900c817be 100755
--- a/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh
+++ b/tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh
@@ -165,6 +165,16 @@ trap_stats_test()
 			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"
-- 
2.17.1