LinuxQuestions.org - IPTABLES: Netfilter Queue handling : nf_create

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- - IPTABLES: Netfilter Queue handling : nf_create_queue() entering blocking mode. (https://www.linuxquestions.org/questions/linux-kernel-70/iptables-netfilter-queue-handling-nf_create_queue-entering-blocking-mode-4175548211/)

IPTABLES: Netfilter Queue handling : nf_create_queue() entering blocking mode.

Hi,
I have a IPTABLES rule and to handle the queued packets in the userspace i am using netfilter queue handle.
I am having a Queue lib handle that handles all v4 packets from kernal to userspace. when i call nfq_create_queue, it is going into blocking mode and my program never comes back!
please help me in this ASAP!

Quote:

Originally Posted by santhosh M (Post 5392599)

Hi,
I have a IPTABLES rule and to handle the queued packets in the userspace i am using netfilter queue handle.
I am having a Queue lib handle that handles all v4 packets from kernal to userspace. when i call nfq_create_queue(), it is going into blocking mode and my program never comes back!
please help me in this ASAP!

the backtrace is like this

in recvfrom () from /lib/x86_64-linux-gnu/libpthread.so.0
in nfnl_recv () from /usr/lib/libnfnetlink.so.0
in nfnl_catch () from /usr/lib/libnfnetlink.so.0