[dpdk-stable] [PATCH v2] net/iavf: fix VIRTHCNL_OP_SET_RSS_HENA handling

[Zhang, Qi Z]

> -----Original Message-----
> From: Ding, Xuan <xuan.ding at intel.com>
> Sent: Tuesday, January 19, 2021 12:35 PM
> To: Zhang, Qi Z <qi.z.zhang at intel.com>; Wu, Jingjing <jingjing.wu at intel.com>;
> Xing, Beilei <beilei.xing at intel.com>
> Cc: dev at dpdk.org; stable at dpdk.org
> Subject: RE: [PATCH v2] net/iavf: fix VIRTHCNL_OP_SET_RSS_HENA handling
> 
> Hi Qi,
> 
> > -----Original Message-----
> > From: Zhang, Qi Z <qi.z.zhang at intel.com>
> > Sent: Tuesday, January 19, 2021 11:45 AM
> > To: Ding, Xuan <xuan.ding at intel.com>; Wu, Jingjing
> > <jingjing.wu at intel.com>; Xing, Beilei <beilei.xing at intel.com>
> > Cc: dev at dpdk.org; stable at dpdk.org
> > Subject: RE: [PATCH v2] net/iavf: fix VIRTHCNL_OP_SET_RSS_HENA
> > handling
> >
> >
> >
> > > -----Original Message-----
> > > From: Ding, Xuan <xuan.ding at intel.com>
> > > Sent: Monday, January 18, 2021 4:28 PM
> > > To: Zhang, Qi Z <qi.z.zhang at intel.com>; Wu, Jingjing
> > > <jingjing.wu at intel.com>; Xing, Beilei <beilei.xing at intel.com>
> > > Cc: dev at dpdk.org; Ding, Xuan <xuan.ding at intel.com>; stable at dpdk.org
> > > Subject: [PATCH v2] net/iavf: fix VIRTHCNL_OP_SET_RSS_HENA handling
> > >
> > > Allow error to be returned for VIRTCHNL_OP_SET_RSS_HENA when set
> > > hena =
> > 0.
> > > Add warning that PF does not support hena = 0 now.
> >
> > Actually this is not a fix, it's a workaround to handle some defect in
> > legacy kernel driver.
> > So changed title and commit log as below:
> >
> > Title: workaround RSS cleanup failure handling
> >
> > Allow to ignore error returned from virtual channel command
> >     VIRTCHNL_OP_SET_RSS_HENA with hena = 0 due to some legacy
> >     kernel driver does not support this. Add warning message when
> >     this happen.
> >
> > >
> > > Fixes: 95f2f0e9fc2a6("net/iavf: improve default RSS")
> >
> > The fix line should be removed.
> >
> > > Cc: stable at dpdk.org
> 
> Since fix line is removed, should CC to stable also be removed?

Sometime we can still have CC stable to hint backport, even its not a fix.
But for this patch, I think its not necessary, as the patch to enable hena=0 belongs to this release, so no workaround need to backport, thanks for the capture.

> Thanks for your correction.
> 
> Regards,
> Xuan
> 
> > >
> > > Signed-off-by: Xuan Ding <xuan.ding at intel.com>
> >
> > Acked by: Qi Zhang <qi.z.zhang at intel.com>
> >
> > Applied to dpdk-next-net-intel.
> >
> > Thanks
> > Qi
>