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Date:      Wed, 12 Dec 2001 14:35:11 -0600 (CST)
From:      Jonathan Lemon <jlemon@flugsvamp.com>
To:        sem@ciam.ru, stable@freebsd.org
Subject:   Re: ??: fxp half-duplex problemm
Message-ID:  <200112122035.fBCKZBJ62726@prism.flugsvamp.com>
In-Reply-To: <local.mail.freebsd-stable/20011211145455$5f08@prism.net>
References:  <local.mail.freebsd-stable/5.1.0.14.0.20011210162739.01c08a50@marble.sentex.ca>

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In article <local.mail.freebsd-stable/20011211145455$5f08@prism.net> you write:
>> ifconfig fxp0 media 100baseTX mediaopt full-duplex
>> ifconfig fxp0 media 100baseTX
>

[ tale of duplex woes snipped ]

It doesn't matter.  You can *NOT* mix NWAY/manual configuration reliably.
Either _both_ ends of the link must be set to NWAY, or _both_ must be set
manually.  Anything else "may, but is not guaranteed" to work, which is 
what you are seeing here.

It appears that what you really want is the ability to do NWAY, but limit
the negotiation to half-duplex.  This is possible, but doesn't fit into our
current ifmedia worldview.  If you want to give it a try, you can use
rev 1.2 of dev/mii/inphy.c, which will perform limited NWAY configuration.
-- 
Jonathan

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