How can I get these packets in the user space application?
hno at marasystems.com
Thu Dec 9 18:02:15 CET 2004
On Thu, 9 Dec 2004, Steven J Scott wrote:
> I have a side question on this. I have a kernel module that creates a
> netfilter hook that looks for packets with a certain source port, and then
> directs them to NF_QUEUE, and I have a user space application that receives the queued packets.
> Since I am only queuing packets I want to monitor/modify is my performance
> hit significant? Or am I better off doing everything within the kernel
Only the packets you return NF_QUEUE on receives a noticeable performance
But if all you do is to look into the source port then why not use plain
iptables for the match?
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