From: Bruce Richardson <bruce.richardson@intel.com>
To: David Marchand <david.marchand@redhat.com>
Cc: <dev@dpdk.org>, <stable@dpdk.org>
Subject: Re: [PATCH] net/ice: fix assumption about tag placement order
Date: Thu, 17 Jul 2025 09:32:54 +0100 [thread overview]
Message-ID: <aHi1Nnvl4_ezD74S@bricha3-mobl1.ger.corp.intel.com> (raw)
In-Reply-To: <CAJFAV8waeOp1euderd+t2VTfTfree-rratig_qq+eCGnJgTq5w@mail.gmail.com>
On Thu, Jul 17, 2025 at 10:19:24AM +0200, David Marchand wrote:
> On Wed, Jul 16, 2025 at 7:39 PM Bruce Richardson
> <bruce.richardson@intel.com> wrote:
> >
> > The specific placement of outer/inner VLAN tags in E810 and related NICs
> > is configurable. Therefore, remove the assumption that if the L2Tag2
> > field is filled in, that the L2Tag1 must also be. Instead, check the
> > existing mbuf VLAN flags, and move tags and set flags as appropriate.
> > This fixes an issue where, with QinQ packets with different Tag ethtypes
> > (0x88a8 vs 0x8100), we get an mbuf reporting two valid tags, but only
> > having had one tag stripped.
> >
> > Fixes: e0dcf94a0d7f ("net/ice: support VLAN ops")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
>
> The ice code seems copy/pasted from i40e.
> So I guess i40e is affected as well.
>
I'll investigate more. These fixes I intend for 25.11 anyway, since I'd
rather not risk them late in the 25.07 release cycle.
/Bruce
next prev parent reply other threads:[~2025-07-17 8:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-16 17:39 Bruce Richardson
2025-07-17 8:19 ` David Marchand
2025-07-17 8:32 ` Bruce Richardson [this message]
2025-07-17 8:36 ` David Marchand
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