From owner-freebsd-arch  Tue Dec 18 22:21:13 2001
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Date: Wed, 19 Dec 2001 17:22:10 +1100 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Luigi Rizzo <rizzo@aciri.org>
Cc: Jonathan Lemon <jlemon@flugsvamp.com>, <arch@FreeBSD.ORG>
Subject: Re: swi_net
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On Tue, 18 Dec 2001, Luigi Rizzo wrote:

> > I'm planning on revising swi_net so that it is possible to run all
> > network processing under the device interrupt instead of deferring
> > things to a netisr().  This also has the advantage of eliminating all
>
> The thing is, some processing can be quite long (e.g. IPSec, very
> long ipfw rulesets, multicast when you have a large number of
> sockets trying to fetch the packet, etc.), so it is not 100%
> desirable having it run in interrupt context.

Netisrs exist because it was 100% undesirable on old, slow machines,
but it isn't a problem now that machines are infinitely fast ;-).

Bruce


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