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From: Ben Greear <greearb@candelatech.com>
To: Alan Cox <alan@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PATCH: VLAN support for 3c59x/3c90x
Date: Wed, 28 Jul 2004 15:30:53 -0700	[thread overview]
Message-ID: <4108291D.7000804@candelatech.com> (raw)
In-Reply-To: <20040728221554.GA22747@devserv.devel.redhat.com>

Alan Cox wrote:
> On Wed, Jul 28, 2004 at 02:33:56PM -0700, Ben Greear wrote:
> 
>>>Stefan de Konink ported this code from the 2.4 VLAN patches and tested it
>>>extensively. I cleaned up the ifdefs and fixed a problem with bracketing
>>>that made older cards fail.
>>
>>I am sure this will be appreciated by the VLAN users!
>>
>>Also, do you happen to know how large of an MTU these cards
>>can support?
> 
> 
> In VLAN mode they support just the extra VLAN bits, with the length
> checking turned off its either FDDI or jumbo frame size but I don't remember
> which. I think FDDI.

So if you try to configure the MTU to 1504 using ifconfig or whatever,
will that actually work?

One reason I ask is that I saw a report of a bug/issue where it was
not possible to send a raw-packet from user space that is bigger than
the MTU.  This would preclude user-space from generating a VLAN packet
with the extra 4 bytes.  Being able to change the MTU would at least
partially work around this issue.

Ben


-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com


  reply	other threads:[~2004-07-28 22:34 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-28 12:42 PATCH: VLAN support for 3c59x/3c90x Alan Cox
2004-07-28 21:33 ` Ben Greear
2004-07-28 22:15   ` Alan Cox
2004-07-28 22:30     ` Ben Greear [this message]
2004-07-29 17:19       ` Alan Cox
2004-07-28 21:36 ` Andrew Morton
2004-07-28 21:45   ` Ben Greear
2004-07-29  4:18     ` Willy Tarreau
2004-07-30  2:20       ` Herbert Xu
2004-07-30 12:10         ` Willy Tarreau
2004-07-31  3:57           ` Herbert Xu
2004-07-31  8:33             ` Willy Tarreau
     [not found]               ` <200407310846.i6V8k3qq006659@uai.com.br>
2004-07-31  8:57                 ` Willy Tarreau
2004-07-31  9:34               ` Jeff Garzik
2004-07-31 10:11                 ` Willy Tarreau
2004-07-31 14:12                   ` Matti Aarnio
2004-07-31 16:18                     ` Jeff Garzik
2004-07-31 17:13                       ` Ben Greear
2004-07-31 17:03                     ` Ben Greear
2004-07-31 17:05                       ` Willy Tarreau
2004-07-31 17:21                         ` Ben Greear
2004-07-31 20:16                           ` Lee Revell
2004-07-31 20:23                             ` Willy Tarreau
2004-07-31 20:25                             ` Alan Cox
2004-07-31 20:40                               ` Lee Revell
2004-08-06 12:30                     ` Willy Tarreau
2004-07-31 16:05                   ` Jeff Garzik
2004-07-31 16:12                     ` Willy Tarreau
2004-07-31 16:26                       ` Jeff Garzik
2004-07-31 21:06                         ` PATCH-2.4: MTU fix for tulip driver Willy Tarreau
2004-07-31  9:35               ` PATCH: VLAN support for 3c59x/3c90x Herbert Xu
2004-07-31 10:01                 ` Willy Tarreau

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