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Help on firewall hooks

To: netdev@xxxxxxxxxxx
Subject: Help on firewall hooks
From: puja <puja.puri@xxxxxxxxxxxxx>
Date: Wed, 31 Jul 2002 10:04:36 +0530
Sender: owner-netdev@xxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.4) Gecko/20011019 Netscape6/6.2
Hello sir,

I wanted to clarify on some concepts in firewall hooks. I found FW_QUEUE as a return type in firewall hook functions in some codes which use firewall hooks. I wanted to know the significance of FW_QUEUE. When is this used as a return type in firewall hook functions ??

In the tcp/ip code for kernel 2.2.20, in ip_output.c; one of the comments says that when call_out_firewall returns FW_QUEUE silently drop the skb.
Can you please elaborate on this.


Thanks in advance
Regards
Puja Puri



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