[dpdk-dev] [PATCH] examples/l3fwd: force CRC stripping for i40evf

Yao, Lei A lei.a.yao at intel.com
Thu Nov 10 06:49:09 CET 2016

I'm testing some DPDK sample under VMware. During the testing work, I find l3fwd+ ixgbe vf can work ,but  L3fwd + i40evf  can't work. So I reported this issue to Bjorn. From my perspective, if can add new parameter in l3fwd sample like what have already don’t in  testpmd "----crc-strip enable" is a better way to resolve this issue. 


-----Original Message-----
From: Topel, Bjorn 
Sent: Wednesday, November 9, 2016 9:10 PM
To: Zhang, Helin <helin.zhang at intel.com>; Ananyev, Konstantin <konstantin.ananyev at intel.com>; dev at dpdk.org
Cc: Xu, Qian Q <qian.q.xu at intel.com>; Yao, Lei A <lei.a.yao at intel.com>; Wu, Jingjing <jingjing.wu at intel.com>; thomas.monjalon at 6wind.com
Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: force CRC stripping for i40evf

Björn/Konstantin wrote:
>> Finally, why doesn't l3fwd have the CRC stripped?
> I don’t know any good reason for that for l3fwd or any other sample 
> app. I think it is just a 'historical' reason.

Ok! Then I'd suggest changing the l3fwd default to actually *strip* CRC instead of not doing it. Lei, any comments?

Helin wrote:
> Yes, i40e driver changed a little bit on that according to the review 
> comments during implementation, comparing to igb and ixgbe.
> I'd suggest to re-invesitgate if we can do the similar thing in igb 
> and ixgbe driver.

Good. Let's do that!

> Any critical issue now? Or just an improvement comments?

Not from my perspective. The issue is that Lei needs some kind of work-around for l3fwd with i40evf, so I'll let Lei comment on how critical it is.


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