Date: Tue, 28 Apr 1998 10:57:56 +0200 (MET DST) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: julian@whistle.com (Julian Elischer) Cc: kjc@csl.sony.co.jp, current@FreeBSD.ORG Subject: Re: Bandwidth throttling etc. Message-ID: <199804280857.KAA26098@labinfo.iet.unipi.it> In-Reply-To: <3540D3AE.52BFA1D7@whistle.com> from "Julian Elischer" at Apr 24, 98 11:02:03 am
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Playing with ipfirewall and mbufs, i am hitting a problem related to
the size of mbufs.
In my implementation, i need to add a couple of fields (6 bytes total)
to the struct ip_fw, bringing its size to 112 bytes.
setsockopt() fails for sizes>108 bytes.
there are two ways i can save the space:
1) reduce IP_FW_MAX_PORTS to 7 instead of 10
2) move counters and statistic info (timestamp) to the end
of the struct ip_fw, and allow setsockopt() to work only
on the initial part of the structure.
suggestions ? The first one is a quick solution to the problem, i am
just not sure how widespread are rules using 8,9,10 ports (where there
is a difference between new and old behaviour).
cheers
luigi
-----------------------------+--------------------------------------
Luigi Rizzo | Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it | Universita' di Pisa
tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/
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