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Date: Sun, 10 Jan 2010 23:55:54 -0800
From: Julian Elischer <julian@elischer.org>
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To: Maxim Ignatenko <gelraen.ua@gmail.com>
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Cc: ipfw@freebsd.org, Luigi Rizzo <rizzo@iet.unipi.it>
Subject: Re: RFC: new ipfw options
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Maxim Ignatenko wrote:
> 2009/12/9 Luigi Rizzo <rizzo@iet.unipi.it>:
>> 3. a hash version of 'table's
>>
>>   Right now ipfw tables are implented as routing tables, which is
>>   great if you have to lookup a longest matching prefix, but a
>>   bit overkill if you care only for ports or jail ids, and
>>   totally uninteresting if you want to lookup flow ids,
>>   or generic sequence of bytes. My plan here is to reuse the
>>   ipfw hash tables to make them available for 'ipfw table ...'
>>   commands. To avoid code and syntax bloat, I'd use the number
>>   0..TABLE_MAX-1 for the existing prefix tables, and
>>   TABLE_MAX..2TABLE_MAX-1 for the new hash tables.
>>
>> comments welcome
>>
> 
> I think better use another name ('htable' for example) instead of
> overloading the old one.
> And thanks for great ideas.
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please keep teh current tables for IP addresses, longes prefix
matching is really hard to do right on other schemes with
the same behaviour. I know, I've tried :-)

the answer id to have different types of tabels I guess, but don't
try combine when things should remain different.