Re: [dpdk-dev] [PATCH] net/ixgbevf: fix stats update after a PF reset

[Thomas Monjalon <thomas.monjalon@6wind.com>]

Please ixgbe maintainers, what can be done for this fix?

2017-03-24 15:11, Olivier Matz:
> Hi,
> 
> (remove stable@dpdk.org)
> 
> On Tue, 14 Mar 2017 10:46:40 +0100, Olivier Matz <olivier.matz@6wind.com> wrote:
> > Hi Wei,
> > 
> > On Thu, 16 Feb 2017 17:49:22 +0100, Olivier Matz <olivier.matz@6wind.com> wrote:
> > > Hi Wei,
> > > 
> > > On Thu, 9 Feb 2017 14:50:05 +0000, "Dai, Wei" <wei.dai@intel.com> wrote:  
> > > > > -----Original Message-----
> > > > > From: Dai, Wei
> > > > > Sent: Thursday, February 9, 2017 10:38 PM
> > > > > To: 'Olivier Matz' <olivier.matz@6wind.com>; dev@dpdk.org; Zhang,
> > > > > Helin <helin.zhang@intel.com>; Ananyev, Konstantin
> > > > > <konstantin.ananyev@intel.com>
> > > > > Cc: Guo Fengtian <fengtian.guo@6wind.com>; stable@dpdk.org
> > > > > Subject: RE: [dpdk-dev] [PATCH] net/ixgbevf: fix stats update after
> > > > > a PF reset
> > > > > 
> > > > > The stats register can rewind to zero when the port is running for
> > > > > a long period. So I am afraid that this check is not always correct.
> > > > > Why not introduce a variable to directly indicate whether the
> > > > > resulted stats should be updated or not.    
> > > >
> > > > Another way is to clear
> > > > hw_stats->last_vfgprc/last_vfgorc/last_vfgptc/last_vfmprc at the same
> > > > time PF is set down.
> > > >     
> > > 
> > > Can we know easily in VF if the PF was set down?  
> > 
> > Any guideline for this? Or is it something we cannot fix?
> > 
> 
> Is any maintainer available to help to fix that?
> 
> Unfortunately I don't have enough knowledge on this driver to do the fix
> by myself. It would be helpful to have some guidelines by a maintainer so
> I can understand what is the proper way to fix the issue.
> 
> Thanks,
> Olivier