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IPQ_CREATE_HANDLE(3)	   Linux Programmer's Manual	  IPQ_CREATE_HANDLE(3)

NAME
       ipq_create_handle,  ipq_destroy_handle — create and destroy libipq han‐
       dles.

SYNOPSIS
       #include <linux/netfilter.h>
       #include <libipq.h>

       struct ipq_handle *ipq_create_handle(u_int32_t flags, u_int32_t	proto‐
       col);
       int ipq_destroy_handle(struct ipq_handle *h);

DESCRIPTION
       The  ipq_create_handle  function initialises libipq for an application,
       attempts to bind to the Netlink socket used by ip_queue, and returns an
       opaque  context	handle.	  It should be the first libipq function to be
       called by an application.  The handle returned should be	 used  in  all
       subsequent library calls which require a handle parameter.

       The  flags parameter is not currently used and should be set to zero by
       the application for forward compatibility.

       The protocol parameter is used to specify the protocol of  the  packets
       to  be queued.  Valid values are NFPROTO_IPV4 for IPv4 and NFPROTO_IPV6
       for IPv6. Currently, only one protocol may be queued at a  time	for  a
       handle.

       The   ipq_destroy_handle	 function  frees  up  resources	 allocated  by
       ipq_create_handle, and should be used when  the	handle	is  no	longer
       required by the application.

RETURN VALUES
       On success, ipq_create_handle returns a pointer to a context handle.
       On failure, NULL is returned.

       On success, ipq_destroy_handle returns zero.
       On failure, -1 is returned.

ERRORS
       On  failure,  a	descriptive  error  message  will be available via the
       ipq_errstr function.

BUGS
       None known.

AUTHOR
       James Morris <jmorris@intercode.com.au>

COPYRIGHT
       Copyright (c) 2000-2001 Netfilter Core Team.

       Distributed under the GNU General Public License.

SEE ALSO
       iptables(8), libipq(3).

Linux iptables 1.2		16 October 2001		  IPQ_CREATE_HANDLE(3)
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