Date: Mon, 29 Mar 2004 19:58:16 +0200 From: Roberto Nunnari <roberto.nunnari@supsi.ch> To: "Jacob S. Barrett" <jbarrett@amduat.net> Cc: freebsd-net@freebsd.org Subject: Re: Disabling VLAN_HWTAGGING Message-ID: <406863B8.7010504@supsi.ch> In-Reply-To: <200403290936.49345.jbarrett@amduat.net> References: <200403251118.40718.jbarrett@amduat.net> <200403270848.37996.jbarrett@amduat.net> <20040329081224.GC70021@ip.net.ua> <200403290936.49345.jbarrett@amduat.net>
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Hello.
Jacob S. Barrett wrote:
> On Monday 29 March 2004 12:12 am, Ruslan Ermilov <ru@FreeBSD.org> wrote:
>
>>No, this is not of course expected. Can you add some debug printfs
>>in the ng_vlan.c:ng_vlan_rcvdata() and see if it ever receives the
>>VLAN tag, and if so, print its value (perhaps the tag is entered by
>>a driver in a network byte order).
>
>
> Bingo... I will dig around in if_nge.c to figure out where to swap the bytes.
>
>
>>Well, for IP/TCP/UDP checksumming, it's possible to switch the
>>corresponding bit in the interface's enabled capabilities field.
>>OTOH, switching VLAN stripping on/off requires reprogramming of
>>the hardware.
>>
>>Generally, if the hardware supports IP/TCP/UDP checksumming and
>>or VLAN tag removal/insertion, it's better to use it. We'd
>>better find the root of the problem and fix it. ;)
>
>
> I agree, so now that we have found it I will try to fix it. Thanks for your
> help.
>
Do you believe this may also be the root cause of my fatal
trap 12 I'm experiencing? see my posts with subject:
Fatal trap in rt_msg2
Best regards.
--
Roberto Nunnari -software engineer-
mailto:roberto.nunnari@supsi.ch
Scuola Universitaria Professionale della Svizzera Italiana
Dipartimento Tecnologie Innovative
http://www.dti.supsi.ch
SUPSI-DTI
Via Cantonale tel: +41-91-6108561
6928 Manno """ fax: +41-91-6108570
Switzerland (o o)
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