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

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Message-ID: <ce09e17d-2b74-4bda-a8ec-352c92659a6e@redhat.com>
Date: Tue, 3 Feb 2026 11:16:45 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Tariq Toukan <tariqt@...dia.com>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, 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>, 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: Re: [PATCH net-next 4/5] selftest: netdevsim: Add devlink port
 resource test

On 2/3/26 8:10 AM, Tariq Toukan wrote:
> 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

This test is failing in NIPA (adding some more context beyond the
failing test output just in case it may help):

# Error: netdevsim: Exceeded number of supported fib entries.
# Error: netdevsim: Exceeded number of supported fib entries.
# kernel answers: Operation not permitted
# TEST: resource test                                                 [ OK ]
# Command "resource" not found
# Command "resource" not found
# TEST: port resource test                                            [FAIL]
# Failed to show port resource for netdevsim/netdevsim10/0
# TEST: dev_info test                                                 [ OK ]
# TEST: empty reporter test                                           [ OK ]
# kernel answers: Success
# kernel answers: Success
# ./devlink.sh: line 614: echo: write error: Invalid argument
# Error: netdevsim: User setup the recover to fail for testing purposes.

/P