From: Gregory Etelson <getelson@nvidia.com>
To: Alexander Kozyrev <akozyrev@nvidia.com>
Cc: "stable@dpdk.org" <stable@dpdk.org>,
Raslan Darawsheh <rasland@nvidia.com>,
Slava Ovsiienko <viacheslavo@nvidia.com>,
Matan Azrad <matan@nvidia.com>
Subject: RE: [PATCH] net/mlx5: fix GRE item matching
Date: Wed, 24 Nov 2021 08:48:09 +0000 [thread overview]
Message-ID: <BYAPR12MB26316E699B5EE32330DD8403A5619@BYAPR12MB2631.namprd12.prod.outlook.com> (raw)
In-Reply-To: <BYAPR12MB2631D04B0C55FA55FA61CFD9A5619@BYAPR12MB2631.namprd12.prod.outlook.com>
Hello Alex,
Your patch is correct.
Please ignore my previous email.
Regards,
Gregory
> -----Original Message-----
> From: Gregory Etelson
> Sent: Wednesday, November 24, 2021 10:16
> To: Alexander Kozyrev <akozyrev@nvidia.com>
> Cc: stable@dpdk.org; Raslan Darawsheh
> <rasland@nvidia.com>; Slava Ovsiienko
> <viacheslavo@nvidia.com>; Matan Azrad
> <matan@nvidia.com>
> Subject: RE: [PATCH] net/mlx5: fix GRE item
> matching
>
> Hello Alexander,
>
> > GRE protocol type is implicitly set in the
> > matching translation in case
> > an application doesn't specify any type
> explicitly
> > in a flow rule.
> > It is extracted from the inner header type, but
> > this type may be absent.
> > In this case, GRE item matching is broken.
> Check
> > if we have the inner
> > header type before setting it to allow matching
> > on all GRE packets.
> >
> > Fixes: be26e81bfc1c ("net/mlx5: fix GRE
> protocol
> > type translation")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Alexander Kozyrev
> > <akozyrev@nvidia.com>
> > ---
> > drivers/net/mlx5/mlx5_flow_dv.c | 3 ++-
> > 1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/mlx5/mlx5_flow_dv.c
> > b/drivers/net/mlx5/mlx5_flow_dv.c
> > index 9d4bd0560c..7bb092ea9f 100644
> > --- a/drivers/net/mlx5/mlx5_flow_dv.c
> > +++ b/drivers/net/mlx5/mlx5_flow_dv.c
> > @@ -8823,8 +8823,9 @@
> > flow_dv_translate_item_gre(void *matcher,
> void
> > *key,
> > protocol_v = rte_be_to_cpu_16(gre_v-
> > >protocol);
> > if (!protocol_m) {
> > /* Force next protocol to prevent
> > matchers duplication */
> > - protocol_m = 0xFFFF;
> > protocol_v =
> > mlx5_translate_tunnel_etypes(pattern_flags);
> > + if (protocol_v)
> > + protocol_m = 0xFFFF;
> > }
> > MLX5_SET(fte_match_set_misc, misc_m,
> > gre_protocol, protocol_m);
> > MLX5_SET(fte_match_set_misc, misc_v,
> > gre_protocol,
> > --
> > 2.18.2
>
> The main idea of the be26e81bfc1c ("net/mlx5:
> fix GRE protocol type translation") patch
> was to *always* force GRE protocol mask.
> Otherwise we get back to the original issue that
> patch has solved.
>
> Regards,
> Gregory
next prev parent reply other threads:[~2021-11-24 8:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-24 4:32 Alexander Kozyrev
2021-11-24 8:16 ` Gregory Etelson
2021-11-24 8:48 ` Gregory Etelson [this message]
2021-11-24 10:14 ` Slava Ovsiienko
2021-11-24 13:05 ` Raslan Darawsheh
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