netdev - Re: [PATCH RFC net-next v1 5/6] tools: ynl: ethtool.py: Make tool invokable from any CWD

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Message-ID: <87y1bavm50.fsf@nvidia.com>
Date: Fri, 23 Feb 2024 14:39:07 -0800
From: Rahul Rameshbabu <rrameshbabu@...dia.com>
To: Jacob Keller <jacob.e.keller@...el.com>
Cc: Saeed Mahameed <saeed@...nel.org>, Leon Romanovsky <leon@...nel.org>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
 <pabeni@...hat.com>, Jonathan Corbet <corbet@....net>, Richard Cochran
 <richardcochran@...il.com>, Tariq Toukan <tariqt@...dia.com>, Gal Pressman
 <gal@...dia.com>, Vadim Fedorenko <vadim.fedorenko@...ux.dev>, Andrew Lunn
 <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>, Przemek Kitszel
 <przemyslaw.kitszel@...el.com>, Ahmed  Zaki <ahmed.zaki@...el.com>,
 Alexander Lobakin <aleksander.lobakin@...el.com>, Hangbin Liu
 <liuhangbin@...il.com>, Paul  Greenwalt <paul.greenwalt@...el.com>, Justin
 Stitt <justinstitt@...gle.com>, Randy Dunlap <rdunlap@...radead.org>,
 Maxime Chevallier <maxime.chevallier@...tlin.com>, Kory Maincent
 <kory.maincent@...tlin.com>, Wojciech Drewek <wojciech.drewek@...el.com>,
 Vladimir Oltean <vladimir.oltean@....com>, Jiri Pirko <jiri@...nulli.us>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>, Jose Abreu
 <joabreu@...opsys.com>, Dragos  Tatulea <dtatulea@...dia.com>,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org
Subject: Re: [PATCH RFC net-next v1 5/6] tools: ynl: ethtool.py: Make tool
 invokable from any CWD

On Fri, 23 Feb, 2024 13:08:34 -0800 Jacob Keller <jacob.e.keller@...el.com> wrote:
> On 2/23/2024 11:24 AM, Rahul Rameshbabu wrote:
>> ethtool.py depends on yml files in a specific location of the linux kernel
>> tree. Using relative lookup for those files means that ethtool.py would
>> need to be run under tools/net/ynl/. Lookup needed yml files without
>> depending on the current working directory that ethtool.py is invoked from.
>> 
>> Signed-off-by: Rahul Rameshbabu <rrameshbabu@...dia.com>
>> Reviewed-by: Dragos Tatulea <dtatulea@...dia.com>
>> ---
>>  tools/net/ynl/ethtool.py | 8 ++++++--
>>  1 file changed, 6 insertions(+), 2 deletions(-)
>> 
>> diff --git a/tools/net/ynl/ethtool.py b/tools/net/ynl/ethtool.py
>> index 6c9f7e31250c..44ba3ba58ed9 100755
>> --- a/tools/net/ynl/ethtool.py
>> +++ b/tools/net/ynl/ethtool.py
>> @@ -6,6 +6,7 @@ import json
>>  import pprint
>>  import sys
>>  import re
>> +import os
>>  
>>  from lib import YnlFamily
>>  
>> @@ -152,8 +153,11 @@ def main():
>>      global args
>>      args = parser.parse_args()
>>  
>> -    spec = '../../../Documentation/netlink/specs/ethtool.yaml'
>> -    schema = '../../../Documentation/netlink/genetlink-legacy.yaml'
>> +    script_abs_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
>> +    spec = os.path.join(script_abs_dir,
>> +                        '../../../Documentation/netlink/specs/ethtool.yaml')
>> +    schema = os.path.join(script_abs_dir,
>> +                          '../../../Documentation/netlink/genetlink-legacy.yaml')
>>  
>
> This seems like a worthwhile improvement to make the tool more usable.
>

Unfortunately, even though in the next patch after this one where I add
the ts stats group as a comment, the tool seems to fail at rendering the
actual counters of the stats group, so I had to use the ethtool tree to
test. I should look into that, so that way other contributors such as
Intel can simply use this script to test that they hooked into the
ethtool ts stats interface correctly.

--
Thanks,

Rahul Rameshbabu