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Date:      Fri, 12 Jun 2009 18:35:37 +0000 (UTC)
From:      "Bjoern A. Zeeb" <bz@FreeBSD.org>
To:        Navdeep Parhar <np@FreeBSD.org>
Cc:        Pyun YongHyeon <pyunyh@gmail.com>, FreeBSD net mailing list <freebsd-net@freebsd.org>, "George V. Neville-Neil" <gnn@freebsd.org>, Michael Tuexen <tuexen@freebsd.org>, Andrew Thompson <thompsa@freebsd.org>, Jack F Vogel <jfv@freebsd.org>, Andrew Gallatin <gallatin@freebsd.org>, Pyun YongHyeon <yongari@freebsd.org>
Subject:   Re: Ethernet NIC drivers depending unconditionally on INET
Message-ID:  <20090612183349.B22887@maildrop.int.zabbadoz.net>
In-Reply-To: <20090612182404.GA20035@hub.freebsd.org>
References:  <20090611184555.J22887@maildrop.int.zabbadoz.net> <20090612013406.GB72855@michelle.cdnetworks.co.kr> <20090612100900.M22887@maildrop.int.zabbadoz.net> <20090612170703.GA994@hub.freebsd.org> <20090612173728.B22887@maildrop.int.zabbadoz.net> <20090612182404.GA20035@hub.freebsd.org>

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On Fri, 12 Jun 2009, Navdeep Parhar wrote:

Hi,

>>> cxgb(4)
>>> will not let you enable IFCAP_TSO6 on the interface.  It has always
>>> been disallowed as far as I can tell.
>>
>> Yes, you have it in the logic bu you define it to 0;)
>> 	#define IFCAP_TSO6 0x0
>
> Not quite.  TSO_SUPPORTED is defined and so cxgb(4) picks up the
> right values of IFCAP_TSO4 and IFCAP_TSO6.  It's just that IFCAP_TSO6
> is not in the enabled-by-default capabilities (CXGB_CAP_ENABLE), and
> cxgb_ioctl will not let you enable IFCAP_TSO6.
>
> cxgb's silicon supports TSO+IPv6, so I'm not sure why things are the
> way they are.  If the stack's tso6 works, then this is a bug in
> cxgb.

Oki, I think once this all has settled we'll be able to text it on
cxgb as well; let us get the infrastructure shaken out first.

/bz

-- 
Bjoern A. Zeeb                      The greatest risk is not taking one.



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