[dpdk-dev] [PATCH] cmdline: increase commandline buffer size to 512

[Mcnamara, John]

> -----Original Message-----
> From: Nélio Laranjeiro [mailto:nelio.laranjeiro at 6wind.com]
> Sent: Thursday, November 5, 2015 4:51 PM
> To: Mcnamara, John; Olivier Matz; Thomas Monjalon
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] cmdline: increase commandline buffer size
> to 512
> 
> On Thu, Nov 05, 2015 at 09:58:36AM +0000, John McNamara wrote:
> > Increase commandline buffer size to 512 to allow for longer
> > commandlines required by testpmd when dealing with flow director and
> > IPv6 addresses.
> >
> > ...
> >
> >  /* configuration */
> > -#define RDLINE_BUF_SIZE 256
> > +#define RDLINE_BUF_SIZE 512
> >
> 
> I have faced the same issue.  For some commands this value is still too
> low.  For example,  RETA update can not be used, the command line limits
> he configuration to 34 entries.
> 
> See http://dpdk.org/ml/archives/dev/2015-October/024681.html
> and particularly
> http://dpdk.org/ml/archives/dev/2015-October/024682.html
> 
> It was too late to announce an ABI change so we left out the cmdline
> size update.
> 
> Olivier, Thomas, what do you think about this?  It seems this is really
> blocking.

Hi,

Since the change breaks ABI I'll self nack.

However, this is something that should be fixed since it will affect any DPDK application with a long commandline.

I can put a warning of future ABI breakage in the release notes but I see that there are other #defines that you need to increase in your patchset so do you want to submit the ABI deprecation notice?

John.
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