Date: Sat, 14 Dec 2002 15:51:11 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Maxime Henrion <mux@FreeBSD.ORG> Cc: "David O'Brien" <obrien@FreeBSD.ORG>, current@FreeBSD.ORG Subject: Re: ipfw userland breaks again. Message-ID: <200212142351.gBENpBVH002931@apollo.backplane.com> References: <200212142025.aa99706@salmon.maths.tcd.ie> <200212142038.gBEKcDVv029924@apollo.backplane.com> <20021214204426.GA62058@dragon.nuxi.com> <200212142209.gBEM9D8p002479@apollo.backplane.com> <20021214221252.GF27086@elvis.mu.org> <200212142222.gBEMMqcn002571@apollo.backplane.com> <20021214224524.GG27086@elvis.mu.org>
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:Now I would really dislike seeing your patch in the tree, since I
:consider it's a rather crude hack to circumvent the ABI problems of
:ipfw. As I've already said to luigi in private e-mail (I would be
:surprised if this hasn't been already discussed in the lists as well),
:the proper way to fix this problem is to separate the kernel and
:userland structures of ipfw, and add versioning to the struct.
:
:This can be done without even breaking the ABI again, since several
:pointers in the kernel structures are useless to userland (like the next
:field) and can be reused to implement structure versioning.
:
:Cheers,
:Maxime
If/when Luigi fixes the ABI problems with IPFW, we can remove
this 'hack'. Until then, I do not consider the hackiness nature
of the patch sufficient reason to not put it in. I've been bitten
by this problem dozens of times, and wasted many hours simply because
I couldn't get the damn network working, and so have others.
-Matt
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