From: Claudiu Manoil <claudiu.manoil@freescale.com>
To: voncken <cedric.voncken@acksys.fr>
Cc: <netdev@vger.kernel.org>
Subject: Re: Gianfar : Q : Tx VLAN hardware accelaration
Date: Mon, 4 Feb 2013 12:04:07 +0200 [thread overview]
Message-ID: <510F8797.10909@freescale.com> (raw)
In-Reply-To: <001401ce0060$e686afd0$b3940f70$@acksys.fr>
On 2/1/2013 11:45 AM, voncken wrote:
> Hi Claudiu,
>
> I would like to send on the same Ethernet interface (so the same eTSEC) a
> frame with VLAN tag and without VLAN tag.
>
> If I understand correctly mpc8315 Family reference manual rev 2, when TX
> VLAN hardware acceleration is enable, the eTSEC always add the VLAN TAG
> -from FCB or from the default TAG register).
>
> Could you confirm is not possible to send frame without tag when Tx VLAN
> hardware acceleration is enable?
>
> Thanks
>
Hi Cedric,
If I remember correctly, if the hw vlan tag insertion feature is
activated then vlan tag 0 is inserted for non-vlan frames. VLAN-aware
hosts can deal with this, however this may pose problems for the
vlan-unaware ones (e.g. 802.1Q support not activated). I think this
is the main reason why the tx vlan accel is turned off by default.
regards,
Claudiu
prev parent reply other threads:[~2013-02-04 10:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-01 9:45 Gianfar : Q : Tx VLAN hardware accelaration voncken
2013-02-04 10:04 ` Claudiu Manoil [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=510F8797.10909@freescale.com \
--to=claudiu.manoil@freescale.com \
--cc=cedric.voncken@acksys.fr \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.