Date: Fri, 27 Feb 2004 14:36:30 +0600 From: Alexey Dokuchaev <danfe@nsu.ru> To: Dag-Erling Sm?rgrav <des@des.no> Cc: Sam Leffler <sam@errno.com> Subject: Re: cvs commit: src/sys/contrib/pf/net if_pflog.c if_pflog.h if_pfsync.c if_pfsync.h pf.c pf_ioctl.c pf_norm.c pf_osfp.c pf_table.c pfvar.h src/sys/contrib/pf/netinet in4_cksum.c Message-ID: <20040227083630.GC54056@regency.nsu.ru> In-Reply-To: <xzpptc10vvv.fsf@dwp.des.no> References: <200402260234.i1Q2YDx1014240@repoman.freebsd.org> <20040226060126.GA70201@troutmask.apl.washington.edu> <20040226080517.GA29763@cat.robbins.dropbear.id.au> <20040226015016.B23674@xorpc.icir.org> <403DC956.8EA364B2@freebsd.org> <20040226071123.A31631@xorpc.icir.org> <565913D0-68E2-11D8-AE91-000A95AD0668@errno.com> <xzpptc10vvv.fsf@dwp.des.no>
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On Fri, Feb 27, 2004 at 09:28:04AM +0100, Dag-Erling Sm?rgrav wrote: > Sam Leffler <sam@errno.com> writes: > > I made two attempts to eliminate all the ipfw-, dummmynet-, and > > bridge-specific code in the ip protocols but never got stuff to the > > point where I was willing to commit it. My main motivation for doing > > this was to eliminate much of the incestuous behaviour so that you > > could reason about locking requirements but there were other benefits > > (e.g. I was also trying to make the ip code more "firewall agnostic"). > > The ideal solution would be to convert the entire networking stack to > netgraph nodes; we could then insert filter nodes at any point in the > graph. That idea was attracting my attention for quite some time, probably since when emax' bluetooth stuff hit the tree. It seems the most generic and coherent approach; especially provided that all core functionality is already implemented and well-tested, and there are lots of real-life NG-based solutions already available that come with both stock FreeBSD and from third parties. I'm also wondering how far is it possible to push NG usage into the kernel; e.g. can USB stack be converted to it (seeing analogy with bluetooth here)? ./danfe
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