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List:       e1000-devel
Subject:    Re: [E1000-devel] Jumbo frame MTU setting for Virtual function - RTNETLINK answers: Invalid argument
From:       "Tantilov, Emil S" <emil.s.tantilov () intel ! com>
Date:       2014-02-19 17:34:32
Message-ID: 87618083B2453E4A8714035B62D679924FECABDD () FMSMSX105 ! amr ! corp ! intel ! com
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> -----Original Message-----
> From: Raj Ravi [mailto:mekaviraj@gmail.com]
> Sent: Tuesday, February 18, 2014 8:12 PM
> To: Tantilov, Emil S
> Cc: e1000-devel@lists.sourceforge.net
> Subject: Re: [E1000-devel] Jumbo frame MTU setting for
> Virtual function - RTNETLINK answers: Invalid argument
> 
> Thanks.
> Will you be able to point me to the patch which fixes this
> issue in ixgbevf driver?
> 
> If it is a minor one, I can live with the patch.  If
> possible, point me to the related file in ixgbevf driver.

I don't know exactly which patch resolved this issue. The driver went over quite a \
bit of rework so it's unlikely that the change will be small or simple. Although you \
can go over the drivers from SF and find the closest version to 2.17.12 that solves \
your issue and look at the changes.

> In case of updating the driver, only updating ixgbevf alone
> is enough OR I need to update both ixgbe and ixgbevf ??

We test the ixgbe and ixgbevf together as they are released, so the further away \
ixgbevf is from ixgbe the more likely you are to run into some kind of problem.

> Is there any dependency with user land packages  (related to
> nettools or something related) ??

Not that I know of.

Thanks,
Emil

> Thanks!
> 
> 
> 
> 
> 
> 
> On Tue, Feb 18, 2014 at 11:35 PM, Tantilov, Emil S
> <emil.s.tantilov@intel.com> wrote:
> 
> 
> 	This was an issue in the older versions of ixgbevf.
> Newer versions should not show this problem.
> 
> 	Thanks,
> 	Emil
> 
> 
> 	>-----Original Message-----
> 	>From: Raj Ravi [mailto:mekaviraj@gmail.com]
> 	>Sent: Tuesday, February 18, 2014 5:21 AM
> 	>To: e1000-devel@lists.sourceforge.net
> 	>Subject: [E1000-devel] Jumbo frame MTU setting for
> Virtual
> 	>function - RTNETLINK answers: Invalid argument
> 	>
> 	>Hi,
> 	>I am trying to change MTU value to 9000 for a virtual
> 	>function (SR- IOV
> 	>mode).
> 	>It works fine when the interface is UP. (using
> ifconfig  mtu
> 	>9000 )
> 	>
> 	>But, it fails, If the interface is down. (throwing
> error
> 	>message
> 	>:  RTNETLINK answers: Invalid argument). Note,This
> error is
> 	>shown only for
> 	>MTU of value 9000. (not for default value 1500).
> 	>
> 	>Due to this problem, I am not able to setup MTU in
> ifcfg-
> 	>eth0 script. (Same
> 	>error is thrown during bootup). Once it is bootup, I
> can
> 	>change the value
> 	>using ifconfig (as the interface is already UP).
> 	>
> 	>
> 	>I am using ixgbevf 2.7.12 for a custom Linux
> distribution.
> 	>Please let me know whether how this issue can be fixed
> ?
> 	>Thanks
> 	>
> 	>PS:
> 	>1. Corresponding PF is already updated with MTU value
> 9000.
> 	>I understand
> 	>that PF must be configured for jumbo frame first
> followed by
> 	>VF.
> 	>2. ixgbe version 3.15.1
> 
> 


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