From: "Xu, Qian Q" <qian.q.xu@intel.com>
To: "Yao, Lei A" <lei.a.yao@intel.com>,
"Topel, Bjorn" <bjorn.topel@intel.com>,
"Wu, Jingjing" <jingjing.wu@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [dpdk-dev] l3fwd can't launch on VF when we use i40e
Date: Fri, 22 Jul 2016 02:10:28 +0000 [thread overview]
Message-ID: <82F45D86ADE5454A95A89742C8D1410E032F7520@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <2DBBFF226F7CF64BAFCA79B681719D9502044162@shsmsx102.ccr.corp.intel.com>
+ dpdk.org mailing list. I also thought the patch to check port CRC strip then make the port fail to start is not proper.
For testpmd, we can use -crc-strip, but for l3fwd, we may need change code to enable crc-strip, and for all application, we need change the code; this is not acceptable.
Users may think it's a bug of R16.07 since R16.04 didn't check that. From my view, crc-strip is not a "MUST" check for the port start. We can configure the value after
the port start.
Any thoughts?
From: Yao, Lei A
Sent: Friday, July 22, 2016 9:36 AM
To: Topel, Bjorn <bjorn.topel@intel.com>
Cc: Xu, Qian Q <qian.q.xu@intel.com>
Subject: l3fwd can't launch on VF when we use i40e
Hi, Bjorn
This is lei who is running DPDK testing on VMware with 16.07 RC3. Now I met one issue, after I enable SR-IOV on VMware with i40e related NIC, I can't launch l3fwd example on VF because of this error info:
i40evf_dev_configure(): VF can't disable HW CRC Strip.
I see that you have submit following patch related to this scenario
commit 1bbcc5d21129168a212e7d755751b0d4742d20d9
Author: Björn Töpel <bjorn.topel@intel.com>
Date: Fri Apr 22 07:39:22 2016 +0200
i40evf: report error for unsupported CRC stripping config
On hosts running a non-DPDK PF driver, the VF has no means of changing
the HW CRC strip setting for a RX queue. It's implicitly enabled.
This patch checks if the host is running a non-DPDK PF kernel driver,
and returns an error, if HW CRC stripping was not requested in the port
configuration.
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
Do you know is there any way I can bypass this when I use l3fwd? I know when we use testpmd, we can add --crc-strip enable to bypass this blocker. But I don't know the method on l3fwd. Thanks.
Best Regards
Lei
next parent reply other threads:[~2016-07-22 2:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <2DBBFF226F7CF64BAFCA79B681719D9502044162@shsmsx102.ccr.corp.intel.com>
2016-07-22 2:10 ` Xu, Qian Q [this message]
2016-08-10 11:00 ` Björn Töpel
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