[PATCH v2] net/i40e: don't check link status on device start

[David Marchand]

On Fri, Jan 13, 2023 at 2:39 PM Zhang, Helin <helin.zhang at intel.com> wrote:
>
>
>
> > -----Original Message-----
> > From: David Marchand <david.marchand at redhat.com>
> > Sent: Friday, January 13, 2023 9:33 PM
> > To: Zhang, Yuying <yuying.zhang at intel.com>; Xing, Beilei
> > <beilei.xing at intel.com>; Mcnamara, John <john.mcnamara at intel.com>
> > Cc: dev at dpdk.org; stable at dpdk.org; Zhang, Qi Z <qi.z.zhang at intel.com>;
> > Dapeng Yu <dapengx.yu at intel.com>; Wenxuan Wu
> > <wenxuanx.wu at intel.com>
> > Subject: Re: [PATCH v2] net/i40e: don't check link status on device start
> >
> > Hello i40e maintainers, John,
> >
> > On Mon, Jan 9, 2023 at 10:21 AM David Marchand
> > <david.marchand at redhat.com> wrote:
> > > On Tue, Jan 3, 2023 at 3:02 PM David Marchand
> > <david.marchand at redhat.com> wrote:
> > > > Hi i40e maintainers,
> > > >
> > > > On Tue, Dec 13, 2022 at 10:19 AM David Marchand
> > > > <david.marchand at redhat.com> wrote:
> > > > >
> > > > > The mentioned changes broke existing applications when the link
> > > > > status of i40e ports is down at the time the port is started.
> > > > > Revert those changes, the original issue will need a different fix.
> Hi David
>
> Does it break all the application or just a specific application?

I don't see how it would not affect all applications seeing how the
original patch is dumb.

> We may need to understand the issue you met, and try to fix it later.

Just unplug the cable or fake a link down on your i40e port, start
your application or port, then plug the cable back.
The max frame size will never get applied to hw.


-- 
David Marchand