[dpdk-dev] [PATCH 1/3] i40e: enable extended tag

Zhang, Helin helin.zhang at intel.com
Tue Jan 26 01:29:10 CET 2016



> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> Sent: Monday, January 25, 2016 5:17 PM
> To: Zhang, Helin
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 1/3] i40e: enable extended tag
> 
> > From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> > > 2015-12-21 10:38, Helin Zhang:
> > > > PCIe feature of 'Extended Tag' is important for 40G performance.
> > > > It adds its enabling during each port initialization, to ensure
> > > > the high performance.
> > >
> > > If it's so important, why the values are not documented?
> > > Please start to fill a file doc/guides/nics/i40e.rst to explain how
> > > the device works. Thanks
> >
> > It has already been mentioned in getting started guide for a long time.
> > Are you suggesting to move into i40e specifically? Thanks!
> 
> Yes you're right. I had forgotten that:
> http://dpdk.org/doc/guides-2.2/linux_gsg/enable_func.html#enabling-
> extended-tag-and-setting-max-read-request-size
> 
> Yes, it would be better moved into an i40e doc.
> And maybe max_read_request_size may be commented to give advices on
> values.
> Thanks

OK. Good idea, and I will move that soon later. Thanks!

Regards,
Helin


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