netdev - Re: [PATCH iproute2 2/2] devlink: add batch command support

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Date:   Sun, 12 Nov 2017 16:16:50 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Ivan Vecera <ivecera@...hat.com>, netdev@...r.kernel.org,
        jiri@...lanox.com, arkadis@...lanox.com
Subject: Re: [PATCH iproute2 2/2] devlink: add batch command support

On Fri, 10 Nov 2017 21:47:35 +0200
Leon Romanovsky <leon@...nel.org> wrote:

> On Fri, Nov 10, 2017 at 08:10:43AM +0100, Ivan Vecera wrote:
> > On 10.11.2017 07:57, Leon Romanovsky wrote:  
> > > On Fri, Nov 10, 2017 at 07:20:14AM +0100, Ivan Vecera wrote:  
> > >> The patch adds support to batch devlink commands.
> > >>
> > >> Cc: Jiri Pirko <jiri@...lanox.com>
> > >> Cc: Arkadi Sharshevsky <arkadis@...lanox.com>
> > >> Signed-off-by: Ivan Vecera <ivecera@...hat.com>
> > >> ---
> > >>  devlink/devlink.c  | 70 +++++++++++++++++++++++++++++++++++++++++++++++-------
> > >>  man/man8/devlink.8 | 16 +++++++++++++
> > >>  2 files changed, 78 insertions(+), 8 deletions(-)
> > >>  
> > >
> > > <..>
> > >  
> > >> diff --git a/man/man8/devlink.8 b/man/man8/devlink.8
> > >> index a480766c..a975ef34 100644
> > >> --- a/man/man8/devlink.8
> > >> +++ b/man/man8/devlink.8
> > >> @@ -12,6 +12,12 @@ devlink \- Devlink tool
> > >>  .sp
> > >>
> > >>  .ti -8
> > >> +.B devlink
> > >> +.RB "[ " -force " ] "
> > >> +.BI "-batch " filename
> > >> +.sp
> > >> +
> > >> +.ti -8
> > >>  .IR OBJECT " := { "
> > >>  .BR dev " | " port " | " monitor " }"
> > >>  .sp
> > >> @@ -32,6 +38,16 @@ Print the version of the
> > >>  utility and exit.
> > >>
> > >>  .TP
> > >> +.BR "\-b", " \-batch " <FILENAME>
> > >> +Read commands from provided file or standard input and invoke them.
> > >> +First failure will cause termination of devlink.  
> > >
> > > It is worth to document the expected format of that file.
> > > And IMHO, it is better to have ability to load JSON fie which was
> > > generated by -j, instead of declaring new format/knob.  
> > It's just a list of command-lines... like other utils (bridge,ip...)  
> 
> I'm implementing similar thing in RDMAtool (part of iproute2) and choose JSON
> approach, it is more user and script friendly.
> 

If you want to do batch form rdmatool then it must take list of commands by default.
An additional option to take json input "rdmatool -j --batch..." would be good as well.



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