How can I get these packets in the user space application?
maarten.wijnants at pandora.be
Thu Dec 9 14:24:42 CET 2004
Hello Srinivas G,
> My doubt is: How the user application can get the packet from the 'hook'
> function? What APIs are used in the user space application to access the
> packet from the hook function?
I am trying to understand your current situation. So you have a kernel
module that is subscribed to a certain netfilter hook and as a result starts
receiving packets; and now you want to pass these packets from your kernel
module to a userspace application? Is this correct?
If this is your current situation, you should issue a NF_QUEUE verdict for
arriving packets in your kernel module to queue the packets to userspace.
Subsequently, you will need to create a userspace application to receive the
queued packets and run it. You can use libipq to write a userspace
application that will accept queued packets. See the man page of libipq for
more information on how to do this (the man page contains a fully working
I hope this helps you. Regards,
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