From: Andrew Morton <akpm@linux-foundation.org>
To: Jiri Pirko <jpirko@redhat.com>
Cc: bugme-daemon@bugzilla.kernel.org, netdev@vger.kernel.org,
mike.auty@gmail.com
Subject: Re: [Bugme-new] [Bug 41152] New: kernel 3.0 and above fails to handle vlan id 0 (802.1p) packets properly without hardware acceleration
Date: Tue, 16 Aug 2011 15:09:18 -0700 [thread overview]
Message-ID: <20110816150918.5b2d7067.akpm@linux-foundation.org> (raw)
In-Reply-To: <bug-41152-10286@https.bugzilla.kernel.org/>
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Sun, 14 Aug 2011 12:48:16 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=41152
>
> Summary: kernel 3.0 and above fails to handle vlan id 0
> (802.1p) packets properly without hardware
> acceleration
> Product: Networking
> Version: 2.5
> Kernel Version: 3.0
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Other
> AssignedTo: acme@ghostprotocols.net
> ReportedBy: mike.auty@gmail.com
> Regression: Yes
>
>
> Hi there,
>
> I recently found that packets tagged with a vlan id of 0 are no longer received
> on the main interface. There were no dmesg entries on the dropped packets. I
> attempted to setup a vlan 0 interface and configure it, but couldn't
> successfully route traffic to the device. I can recreate this on two of the
> three networking devices I have, my guess is that the third does successfully
> handle hardware acceleration of vlan tags.
>
> After a bisection this appears to be related to commit
> bcc6d47903612c3861201cc3a866fb604f26b8b2, which seems to try to merge the
> non-hardware accelerated and hardware accelerated code paths for handling
> vlans. In the process, it appears vlan id 0 (802.1p) packets are no longer
> handled correctly.
>
> Unfortunately I don't know the code paths well enough to figure out what's
> going wrong, but I'd be happy to provide more information, run tests or try out
> patches if it would help, just let me know. Thanks... 5:)
>
> Mike 5:)
next parent reply other threads:[~2011-08-16 22:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-41152-10286@https.bugzilla.kernel.org/>
2011-08-16 22:09 ` Andrew Morton [this message]
2011-08-17 5:37 ` [Bugme-new] [Bug 41152] New: kernel 3.0 and above fails to handle vlan id 0 (802.1p) packets properly without hardware acceleration Jiri Pirko
2011-08-17 6:36 ` Mike Auty
2011-08-17 10:59 ` Jiri Pirko
2011-08-17 17:50 ` Jiri Pirko
2011-08-17 22:48 ` Mike Auty
2011-08-18 16:37 ` Jiri Pirko
2011-08-18 19:39 ` Mike Auty
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