netdev - Re: ❌ FAIL: Test report for kernel 5.10.0-rc6 (mainline.kernel.org)

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Date:   Wed, 9 Dec 2020 19:50:27 +0100
From:   Eric Dumazet <edumazet@...gle.com>
To:     Saeed Mahameed <saeed@...nel.org>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        Vladyslav Buslov <vladbu@...dia.com>,
        Jianlin Shi <jishi@...hat.com>,
        CKI Project <cki-project@...hat.com>,
        netdev <netdev@...r.kernel.org>, skt-results-master@...hat.com,
        Yi Zhang <yi.zhang@...hat.com>,
        Memory Management <mm-qe@...hat.com>,
        Jan Stancek <jstancek@...hat.com>,
        Jianwen Ji <jiji@...hat.com>, Hangbin Liu <haliu@...hat.com>,
        Ondrej Moris <omoris@...hat.com>,
        Ondrej Mosnacek <omosnace@...hat.com>,
        Changhui Zhong <czhong@...hat.com>,
        Xiong Zhou <xzhou@...hat.com>,
        Rachel Sibley <rasibley@...hat.com>,
        David Arcari <darcari@...hat.com>
Subject: Re: ❌ FAIL: Test report for kernel 5.10.0-rc6 (mainline.kernel.org)

On Wed, Dec 9, 2020 at 7:34 PM Saeed Mahameed <saeed@...nel.org> wrote:
>
> On Wed, 2020-12-09 at 19:05 +0100, Eric Dumazet wrote:
> > On Wed, Dec 9, 2020 at 6:35 PM Eric Dumazet <edumazet@...gle.com>
> > wrote:
> > > Hmm... maybe the ECN stuff has always been buggy then, and nobody
> > > cared...
> > >
> >
> > Wait a minute, maybe this part was not needed,
> >
> > diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
> > index
> > 8ae9ce2014a4a3ba7b962a209e28d1f65d4a83bd..896a7eb61d70340f69b9d3be0f7
> > 95fbaab1458dd
> > 100644
> > --- a/drivers/net/geneve.c
> > +++ b/drivers/net/geneve.c
> > @@ -270,7 +270,7 @@ static void geneve_rx(struct geneve_dev *geneve,
> > struct geneve_sock *gs,
> >                         goto rx_error;
> >                 break;
> >         default:
> > -               goto rx_error;
> > +               break;
> >         }
> >         oiph = skb_network_header(skb);
> >         skb_reset_network_header(skb);
> >
> >
> > > On Wed, Dec 9, 2020 at 6:20 PM Jakub Kicinski <kuba@...nel.org>
> > > wrote:
> > > > Eric, could this possibly be commit 4179b00c04d1 ("geneve: pull
> > > > IP
> > > > header before ECN decapsulation")?
> > > >
>
> We've bisected an issue in our CI to this patch, something about geneve
> TC offload traffic not passing, I don't have all the details, Maybe
> Vlad can chime in.
>

Yes, I think the patch I sent should fix this, ETH_P_ARP should not be
dropped ;)

I am testing this before offical patch submission.

Thanks !