From owner-freebsd-hackers  Wed Nov 12 04:42:09 1997
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To: erakupa@kk.etx.ericsson.se (ETX-B-SL Martti Kuparinen)
cc: freebsd-hackers@FreeBSD.ORG
Subject: Re: IFF_OACTIVE for fxp 
In-reply-to: Your message of "Wed, 12 Nov 1997 13:02:56 +0100."
             <199711121202.NAA00859@kk662.kk.etx.ericsson.se> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Wed, 12 Nov 1997 04:43:42 -0800
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>I am running 2.2.5-RELEASE with 4 EtherExpress Pro 10/100B
>cards (the fxp driver).
>
>But why, oh why isn't the IFF_OACTIVE flag set when the card's
>transmit buffer is full? I would need this piece of information
>in a priority scheduler I have written...
>
>How can I check if the card's write buffer is full? Or do I have
>to add somewhere "ifp->if_flags |= IFF_OACTIVE" ?

   It's not set because it is optional and because it is higher overhead to
set/clear than it is to just return when we run out of buffers.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project