From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike-Ro-Chanel <mikerochanel@yahoo.it>
Subject: Jitter phenomenon in the netfilter infrastructure
Date: Thu, 16 Oct 2003 09:42:53 +0200
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Hi All,
Inspired by ipt_limit module I've written a token bucket module as a 
iptables module extension.

I've observed a strange behaviour:
In the linux kernel 2.4.21 input ethernet frames are sent to the IPv4 
layer by "process_backlog()" function, this one pass to ip_rcv() 
hundreds of SKB elements in a single burst, its execution is limited (in 
time) by 1 jiffy.
As result a regular IPv4 input traffic is looked by PREROUTING hook as 
an irregular flow of packets.

Looking this phenomenon I think: an ingress bandwidth filter as 
netfilter module is unfeasible.

Is my opinion wrong?

Any suggestions?

Thanks

	Mike-Ro-Chanel