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Date: Fri, 12 Jun 2009 18:35:37 +0000 (UTC)
From: "Bjoern A. Zeeb" <bz@FreeBSD.org>
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To: Navdeep Parhar <np@FreeBSD.org>
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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
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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.