#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <errno.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <libnfnetlink/libnfnetlink.h>
#include <libnetfilter_queue/libnetfilter_queue.h>
#include "src/internal.h"

Include dependency graph for libnetfilter_queue.c:

Data Structures
struct	nfq_handle

struct	nfq_q_handle

struct	nfq_data

Macros
#define	SNPRINTF_FAILURE(ret, rem, offset, len)

Functions
	EXPORT_SYMBOL (nfq_errno)

struct nfnl_handle *	nfq_nfnlh (struct nfq_handle *h)

	EXPORT_SYMBOL (nfq_nfnlh)

int	nfq_fd (struct nfq_handle *h)
	nfq_fd - get the file descriptor associated with the nfqueue handler More...

	EXPORT_SYMBOL (nfq_fd)

struct nfq_handle *	nfq_open (void)
	nfq_open - open a nfqueue handler More...

	EXPORT_SYMBOL (nfq_open)

struct nfq_handle *	nfq_open_nfnl (struct nfnl_handle *nfnlh)
	nfq_open_nfnl - open a nfqueue handler from a existing nfnetlink handler More...

	EXPORT_SYMBOL (nfq_open_nfnl)

int	nfq_close (struct nfq_handle *h)
	nfq_close - close a nfqueue handler More...

	EXPORT_SYMBOL (nfq_close)

int	nfq_bind_pf (struct nfq_handle *h, u_int16_t pf)
	nfq_bind_pf - bind a nfqueue handler to a given protocol family More...

	EXPORT_SYMBOL (nfq_bind_pf)

int	nfq_unbind_pf (struct nfq_handle *h, u_int16_t pf)
	nfq_unbind_pf - unbind nfqueue handler from a protocol family More...

	EXPORT_SYMBOL (nfq_unbind_pf)

struct nfq_q_handle *	nfq_create_queue (struct nfq_handle h, u_int16_t num, nfq_callback cb, void *data)
	nfq_create_queue - create a new queue handle and return it. More...

	EXPORT_SYMBOL (nfq_create_queue)

int	nfq_destroy_queue (struct nfq_q_handle *qh)
	nfq_destroy_queue - destroy a queue handle More...

	EXPORT_SYMBOL (nfq_destroy_queue)

int	nfq_handle_packet (struct nfq_handle h, char buf, int len)
	nfq_handle_packet - handle a packet received from the nfqueue subsystem More...

	EXPORT_SYMBOL (nfq_handle_packet)

int	nfq_set_mode (struct nfq_q_handle *qh, u_int8_t mode, u_int32_t range)
	nfq_set_mode - set the amount of packet data that nfqueue copies to userspace More...

	EXPORT_SYMBOL (nfq_set_mode)

int	nfq_set_queue_flags (struct nfq_q_handle *qh, uint32_t mask, uint32_t flags)
	nfq_set_queue_flags - set flags (options) for the kernel queue More...

	EXPORT_SYMBOL (nfq_set_queue_flags)

int	nfq_set_queue_maxlen (struct nfq_q_handle *qh, u_int32_t queuelen)
	nfq_set_queue_maxlen - Set kernel queue maximum length parameter More...

	EXPORT_SYMBOL (nfq_set_queue_maxlen)

int	nfq_set_verdict (struct nfq_q_handle qh, u_int32_t id, u_int32_t verdict, u_int32_t data_len, const unsigned char buf)
	nfq_set_verdict - issue a verdict on a packet More...

	EXPORT_SYMBOL (nfq_set_verdict)

int	nfq_set_verdict2 (struct nfq_q_handle qh, u_int32_t id, u_int32_t verdict, u_int32_t mark, u_int32_t data_len, const unsigned char buf)
	nfq_set_verdict2 - like nfq_set_verdict, but you can set the mark. More...

	EXPORT_SYMBOL (nfq_set_verdict2)

int	nfq_set_verdict_batch (struct nfq_q_handle *qh, u_int32_t id, u_int32_t verdict)
	nfq_set_verdict_batch - issue verdicts on several packets at once More...

	EXPORT_SYMBOL (nfq_set_verdict_batch)

int	nfq_set_verdict_batch2 (struct nfq_q_handle *qh, u_int32_t id, u_int32_t verdict, u_int32_t mark)
	nfq_set_verdict_batch2 - like nfq_set_verdict_batch, but you can set a mark. More...

	EXPORT_SYMBOL (nfq_set_verdict_batch2)

int	nfq_set_verdict_mark (struct nfq_q_handle qh, u_int32_t id, u_int32_t verdict, u_int32_t mark, u_int32_t data_len, const unsigned char buf)
	nfq_set_verdict_mark - like nfq_set_verdict, but you can set the mark. More...

	EXPORT_SYMBOL (nfq_set_verdict_mark)

struct nfqnl_msg_packet_hdr *	nfq_get_msg_packet_hdr (struct nfq_data *nfad)
	nfqnl_msg_packet_hdr - return the metaheader that wraps the packet More...

	EXPORT_SYMBOL (nfq_get_msg_packet_hdr)

uint32_t	nfq_get_nfmark (struct nfq_data *nfad)
	nfq_get_nfmark - get the packet mark More...

	EXPORT_SYMBOL (nfq_get_nfmark)

int	nfq_get_timestamp (struct nfq_data nfad, struct timeval tv)
	nfq_get_timestamp - get the packet timestamp More...

	EXPORT_SYMBOL (nfq_get_timestamp)

u_int32_t	nfq_get_indev (struct nfq_data *nfad)
	nfq_get_indev - get the interface that the packet was received through More...

	EXPORT_SYMBOL (nfq_get_indev)

u_int32_t	nfq_get_physindev (struct nfq_data *nfad)
	nfq_get_physindev - get the physical interface that the packet was received More...

	EXPORT_SYMBOL (nfq_get_physindev)

u_int32_t	nfq_get_outdev (struct nfq_data *nfad)
	nfq_get_outdev - gets the interface that the packet will be routed out More...

	EXPORT_SYMBOL (nfq_get_outdev)

u_int32_t	nfq_get_physoutdev (struct nfq_data *nfad)
	nfq_get_physoutdev - get the physical interface that the packet output More...

	EXPORT_SYMBOL (nfq_get_physoutdev)

int	nfq_get_indev_name (struct nlif_handle nlif_handle, struct nfq_data nfad, char *name)
	nfq_get_indev_name - get the name of the interface the packet was received through More...

	EXPORT_SYMBOL (nfq_get_indev_name)

int	nfq_get_physindev_name (struct nlif_handle nlif_handle, struct nfq_data nfad, char *name)
	nfq_get_physindev_name - get the name of the physical interface the packet was received through More...

	EXPORT_SYMBOL (nfq_get_physindev_name)

int	nfq_get_outdev_name (struct nlif_handle nlif_handle, struct nfq_data nfad, char *name)
	nfq_get_outdev_name - get the name of the physical interface the packet will be sent to More...

	EXPORT_SYMBOL (nfq_get_outdev_name)

int	nfq_get_physoutdev_name (struct nlif_handle nlif_handle, struct nfq_data nfad, char *name)
	nfq_get_physoutdev_name - get the name of the interface the packet will be sent to More...

	EXPORT_SYMBOL (nfq_get_physoutdev_name)

struct nfqnl_msg_packet_hw *	nfq_get_packet_hw (struct nfq_data *nfad)
	nfq_get_packet_hw More...

	EXPORT_SYMBOL (nfq_get_packet_hw)

int	nfq_get_uid (struct nfq_data nfad, u_int32_t uid)
	nfq_get_uid - get the UID of the user the packet belongs to More...

	EXPORT_SYMBOL (nfq_get_uid)

int	nfq_get_gid (struct nfq_data nfad, u_int32_t gid)
	nfq_get_gid - get the GID of the user the packet belongs to More...

	EXPORT_SYMBOL (nfq_get_gid)

int	nfq_get_payload (struct nfq_data nfad, unsigned char *data)
	nfq_get_payload - get payload More...

	EXPORT_SYMBOL (nfq_get_payload)

int	nfq_snprintf_xml (char buf, size_t rem, struct nfq_data tb, int flags)
	nfq_snprintf_xml - print the enqueued packet in XML format into a buffer More...

	EXPORT_SYMBOL (nfq_snprintf_xml)

Variables
int	nfq_errno

Macro Definition Documentation

#define SNPRINTF_FAILURE	(	ret,
		rem,
		offset,
		len
	)

Value:

do {                                \
    if (ret < 0)                        \
        return ret;                 \
	len += ret;                        \
    if (ret > rem)                      \
        ret = rem;                  \
    offset += ret;                      \
    rem -= ret;                     \
} while (0)

Referenced by nfq_snprintf_xml().

Function Documentation

EXPORT_SYMBOL ( nfq_errno )

EXPORT_SYMBOL ( nfq_nfnlh )

EXPORT_SYMBOL ( nfq_open_nfnl )

struct nfnl_handle* nfq_nfnlh ( struct nfq_handle * h )

References nfq_handle::nfnlh.

Referenced by nfq_fd().

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struct nfq_handle* nfq_open_nfnl ( struct nfnl_handle * nfnlh )

nfq_open_nfnl - open a nfqueue handler from a existing nfnetlink handler

Parameters

nfnlh Netfilter netlink connection handle obtained by calling nfnl_open()

This function obtains a netfilter queue connection handle using an existing netlink connection. This function is used internally to implement nfq_open(), and should typically not be called directly.

Returns: a pointer to a new queue handle or NULL on failure.

References nfnl_callback::data, nfnl_callback_register(), nfnl_subsys_close(), nfnl_subsys_open(), NFNL_SUBSYS_QUEUE, nfq_handle::nfnlh, nfq_handle::nfnlssh, nfq_errno, NFQNL_MSG_MAX, NFQNL_MSG_PACKET, and NULL.

Referenced by nfq_open().

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Variable Documentation

int nfq_errno

Referenced by nfq_create_queue(), and nfq_open_nfnl().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation