From owner-freebsd-net Wed Mar 27 10:40:42 2002 Delivered-To: freebsd-net@freebsd.org Received: from rwcrmhc51.attbi.com (rwcrmhc51.attbi.com [204.127.198.38]) by hub.freebsd.org (Postfix) with ESMTP id 753C337B419 for ; Wed, 27 Mar 2002 10:40:18 -0800 (PST) Received: from InterJet.elischer.org ([12.232.206.8]) by rwcrmhc51.attbi.com (InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP id <20020327184018.FGRG2626.rwcrmhc51.attbi.com@InterJet.elischer.org>; Wed, 27 Mar 2002 18:40:18 +0000 Received: from localhost (localhost.elischer.org [127.0.0.1]) by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id KAA47802; Wed, 27 Mar 2002 10:36:21 -0800 (PST) Date: Wed, 27 Mar 2002 10:36:21 -0800 (PST) From: Julian Elischer To: Andrew Gallatin Cc: Archie Cobbs , Luigi Rizzo , freebsd-net@FreeBSD.ORG Subject: Re: ip_output and ENOBUFS In-Reply-To: <15522.2882.479989.695082@grasshopper.cs.duke.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Wed, 27 Mar 2002, Andrew Gallatin wrote: > > Archie Cobbs writes: > > Luigi Rizzo writes: > > > > Is if_tx_rdy() something that can be used generally or does it only > > > > work with dummynet ? > > > > > > well, the function is dummynet-specific, but I would certainly like > > > a generic callback list to be implemented in ifnet which is > > > invoked on tx_empty events. > > > > Me too :-) > > > > > The problem as usual is that you have to touch every single device > > > driver... Fortunately we can leave the ifnet structure unmodified > > > because i just discovered there is an ifindex2ifnet array which is > > > managed and can be extended to point to additional ifnet state that > > > does not fit in the immutable one... > > > > Why is it important to avoid changing 'struct ifnet' ? > > To maintain binary compatability for commercial network drivers. > > Currently, network driver modules built on 4.1.1 work on all versions > of FreeBSD through 4.5-STABLE. > Not QUITE true.. they ar ebroken in some cases for 4.4 amd 4.5 due to a renumberring of SYSINIT orderings, but I fixed that and they should work in 4.6 again.. I know we hit it here with some cards we have.. I just made a small patch in teh local trees to allow us to use them. Some cards may not hit this problem. > > Drew > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message