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List:       freebsd-net
Subject:    Re: do we support non contiguous netmasks ?
From:       Ruslan Ermilov <ru () freebsd ! org>
Date:       2004-03-31 9:15:34
Message-ID: 20040331091534.GA359 () ip ! net ! ua
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On Wed, Mar 31, 2004 at 12:59:14AM -0800, Luigi Rizzo wrote:
> Hi,
> i was wondering if anyone knows what kind of support we have
> in FreeBSD networking code, for non contiguous netmasks.
> While it is trivial to support them for interface addresses,
> managing them in the routing table is probably far from trivial
> and I believe also mostly useless... and anyways, i have no
> idea how our kernel code deals with them
> 
Yes, our generic routing code that uses PATRICIA trees supports
non-contiguos netmasks (see net/radix.c) but its current version
has been opmimized for contiguous netmasks.


Cheers,
-- 
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer

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