netdev - Re: [PATCH net 1/1] qede: fix offload for IPIP tunnel packets

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Date:   Mon, 28 Dec 2020 11:01:22 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Manish Chopra <manishc@...vell.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Ariel Elior <aelior@...vell.com>,
        Igor Russkikh <irusskikh@...vell.com>,
        "Sudarsana Reddy Kalluru" <skalluru@...vell.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: Re: [PATCH net 1/1] qede: fix offload for IPIP tunnel packets

On Thu, 24 Dec 2020 10:46:47 +0000 Manish Chopra wrote:
> > -----Original Message-----
> > From: Manish Chopra <manishc@...vell.com>
> > Sent: Monday, December 21, 2020 8:26 PM
> > To: davem@...emloft.net
> > Cc: netdev@...r.kernel.org; Ariel Elior <aelior@...vell.com>; Igor Russkikh
> > <irusskikh@...vell.com>; Sudarsana Reddy Kalluru <skalluru@...vell.com>
> > Subject: [PATCH net 1/1] qede: fix offload for IPIP tunnel packets
> > 
> > IPIP tunnels packets are unknown to device, hence these packets are
> > incorrectly parsed and caused the packet corruption, so disable offlods for
> > such packets at run time.
> > 
> > Signed-off-by: Manish Chopra <manishc@...vell.com>
> > Signed-off-by: Sudarsana Kalluru <skalluru@...vell.com>
> > Signed-off-by: Igor Russkikh <irusskikh@...vell.com>
> > ---
> >  drivers/net/ethernet/qlogic/qede/qede_fp.c | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c
> > b/drivers/net/ethernet/qlogic/qede/qede_fp.c
> > index a2494bf..ca0ee29 100644
> > --- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
> > +++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
> > @@ -1799,6 +1799,11 @@ netdev_features_t qede_features_check(struct
> > sk_buff *skb,
> >  			      ntohs(udp_hdr(skb)->dest) != gnv_port))
> >  				return features & ~(NETIF_F_CSUM_MASK |
> >  						    NETIF_F_GSO_MASK);
> > +		} else if (l4_proto == IPPROTO_IPIP) {
> > +			/* IPIP tunnels are unknown to the device or at least
> > unsupported natively,
> > +			 * offloads for them can't be done trivially, so disable
> > them for such skb.
> > +			 */
> > +			return features & ~(NETIF_F_CSUM_MASK |
> > NETIF_F_GSO_MASK);
> >  		}
> >  	}
> 
> Hello Jakub,  can you please queue up for stable releases
> (specifically for long term linux 5.4)?

It's in the queue:

https://patchwork.kernel.org/bundle/netdev/stable/?state=*

I'll submit it later this week.