IPQ_SET_VERDICT - Online Linux Manual PageSection : 3
Updated : 16 October 2001
Source : Linux iptables 1.2
Note : Linux Programmer's Manual

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NAMEipq_set_verdict — issue verdict and optionally modified packet to kernel

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SYNOPSIS#include <linux/netfilter.h>
#include <libipq.h> int ipq_set_verdict(const struct ipq_handle *h, ipq_id_t id, unsigned int verdict, size_t data_len, unsigned char *buf);

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DESCRIPTIONThe ipq_set_verdict function issues a verdict on a packet previously obtained with ipq_read, specifing the intended disposition of the packet, and optionally supplying a modified version of the payload data. The h parameter is a context handle which must previously have been returned successfully from a call to ipq_create_handle. The id parameter is the packet identifier obtained via ipq_get_packet. The verdict parameter must be one of: NF_ACCEPT  Accept the packet and continue traversal within the kernel.
NF_DROP  Drop the packet. NF_QUEUE  Requeue the packet. NF_STOLEN and NF_REPEAT are kernel-internal constants and should not be used from userspace as their exact side effects have not been investigated. The data_len parameter is the length of the data pointed to by buf, the optional replacement payload data. If simply setting a verdict without modifying the payload data, use zero for data_len and NULL for buf. The application is responsible for recalculating any packet checksums when modifying packets.

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RETURN VALUEOn failure, −1 is returned.
On success, a non-zero positive value is returned.

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ERRORSOn error, a descriptive error message will be available via the ipq_errstr function.

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BUGSNone known.

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AUTHORJames Morris <jmorris@intercode.com.au>

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COPYRIGHTCopyright (c) 2000-2001 Netfilter Core Team. Distributed under the GNU General Public License.

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SEE ALSOiptables(8), libipq(3). 0

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