kern/121122: [ipfw] [patch] add support to ToS IP PRECEDENCE fields

[Andrey V. Elsukov]

araujo at FreeBSD.org wrote:
> Synopsis: [ipfw] [patch] add support to ToS IP PRECEDENCE fields
> 
> Responsible-Changed-From-To: freebsd-bugs->freebsd-ipfw
> Responsible-Changed-By: araujo
> Responsible-Changed-When: Tue Feb 26 19:08:49 UTC 2008
> Responsible-Changed-Why: 
> Over to maintainer(s).
> 
> http://www.freebsd.org/cgi/query-pr.cgi?pr=121122

Hi, Marcelo.

I talked to Roman when he submitted his first patch about
it's design. What you think about making TOK_SETIPTOSPRE not
an action, but a modifier? I think it will be much usable.
A syntax example:

# ipfw add allow iptospre flashover ip from any to any
# ipfw add count iptospre immediate ip from anyt to any
# ipfw add skipto ....

Also I talked to Roman about extensible variant of this ability.
A syntax example:

<action> [{modip [DF|TOS|DSCP|TTL]}] <rule body>

Also look into:
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/102471
http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/103454

I added to CC several men who are active in ipfw area.
It will be interested what you think about this?

-- 
WBR, Andrey V. Elsukov