linux-kernel - [PATCH net-next 4/5] selftest: netdevsim: Add devlink port resource test

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Message-ID: <20260203071033.1709445-5-tariqt@nvidia.com>
Date: Tue, 3 Feb 2026 09:10:32 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
 S. Miller" <davem@...emloft.net>
CC: Donald Hunter <donald.hunter@...il.com>, Jiri Pirko <jiri@...nulli.us>,
	Jonathan Corbet <corbet@....net>, Saeed Mahameed <saeedm@...dia.com>, "Leon
 Romanovsky" <leon@...nel.org>, Tariq Toukan <tariqt@...dia.com>, Mark Bloch
	<mbloch@...dia.com>, Shuah Khan <shuah@...nel.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<linux-rdma@...r.kernel.org>, <linux-kselftest@...r.kernel.org>, Gal Pressman
	<gal@...dia.com>, Moshe Shemesh <moshe@...dia.com>, Shay Drori
	<shayd@...dia.com>, Jiri Pirko <jiri@...dia.com>, Or Har-Toov
	<ohartoov@...dia.com>
Subject: [PATCH net-next 4/5] selftest: netdevsim: Add devlink port resource test

From: Or Har-Toov <ohartoov@...dia.com>

Add selftest to verify port-level resource functionality using netdevsim.

Signed-off-by: Or Har-Toov <ohartoov@...dia.com>
Reviewed-by: Shay Drori <shayd@...dia.com>
Reviewed-by: Moshe Shemesh <moshe@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 .../drivers/net/netdevsim/devlink.sh          | 32 ++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/drivers/net/netdevsim/devlink.sh b/tools/testing/selftests/drivers/net/netdevsim/devlink.sh
index 1b529ccaf050..674f0e981ab0 100755
--- a/tools/testing/selftests/drivers/net/netdevsim/devlink.sh
+++ b/tools/testing/selftests/drivers/net/netdevsim/devlink.sh
@@ -5,7 +5,7 @@ lib_dir=$(dirname $0)/../../../net/forwarding
 
 ALL_TESTS="fw_flash_test params_test  \
 	   params_default_test regions_test reload_test \
-	   netns_reload_test resource_test dev_info_test \
+	   netns_reload_test resource_test port_resource_test dev_info_test \
 	   empty_reporter_test dummy_reporter_test rate_test"
 NUM_NETIFS=0
 source $lib_dir/lib.sh
@@ -856,6 +856,36 @@ rate_test()
 	log_test "rate test"
 }
 
+port_resource_test()
+{
+	RET=0
+
+	local first_port="${DL_HANDLE}/0"
+	local name
+	local size
+
+	devlink port resource show "$first_port" > /dev/null 2>&1
+	check_err $? "Failed to show port resource for $first_port"
+
+	name=$(cmd_jq "devlink port resource show $first_port -j" \
+		      ".[][][].name")
+	[ "$name" == "max_sfs" ]
+	check_err $? "Unexpected resource name $name (expected max_sfs)"
+
+	size=$(cmd_jq "devlink port resource show $first_port -j" \
+		      ".[][][].size")
+	[ "$size" == "20" ]
+	check_err $? "Unexpected resource size $size (expected 20)"
+
+	devlink port resource show "$DL_HANDLE" > /dev/null 2>&1
+	check_err $? "Failed to show port resources for $DL_HANDLE"
+
+	devlink port resource show > /dev/null 2>&1
+	check_err $? "Failed to dump all port resources"
+
+	log_test "port resource test"
+}
+
 setup_prepare()
 {
 	modprobe netdevsim
-- 
2.40.1