Date: Wed, 27 Mar 2002 13:11:14 -0500 (EST) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Archie Cobbs <archie@dellroad.org> Cc: Luigi Rizzo <rizzo@icir.org>, freebsd-net@FreeBSD.ORG Subject: Re: ip_output and ENOBUFS Message-ID: <15522.2882.479989.695082@grasshopper.cs.duke.edu> In-Reply-To: <200203271753.g2RHr0L41197@arch20m.dellroad.org> References: <20020326231657.A16810@iguana.icir.org> <200203271753.g2RHr0L41197@arch20m.dellroad.org>
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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. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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