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/* Copyright (C) 2007-2010 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author Victor Julien <victor@inliniac.net>
*/
#ifndef __SOURCE_NFQ_H__
#define __SOURCE_NFQ_H__
#ifdef NFQ
#include "threads.h"
#include <linux/netfilter.h> /* for NF_ACCEPT */
#include <libnetfilter_queue/libnetfilter_queue.h>
// Netfilter's limit
#define NFQ_MAX_QUEUE 65535
/* idea: set the recv-thread id in the packet to
* select an verdict-queue */
typedef struct NFQPacketVars_
{
int id; /* this nfq packets id */
uint16_t nfq_index; /* index in NFQ array */
uint8_t verdicted;
uint32_t mark;
uint32_t ifi;
uint32_t ifo;
uint16_t hw_protocol;
} NFQPacketVars;
typedef struct NFQQueueVars_
{
struct nfq_handle *h;
struct nfnl_handle *nh;
int fd;
uint8_t use_mutex;
/* 2 threads deal with the queue handle, so add a mutex */
struct nfq_q_handle *qh;
SCMutex mutex_qh;
/* this one should be not changing after init */
uint16_t queue_num;
/* position into the NFQ queue var array */
uint16_t nfq_index;
#ifdef DBG_PERF
int dbg_maxreadsize;
#endif /* DBG_PERF */
/* counters */
uint32_t pkts;
uint64_t bytes;
uint32_t errs;
uint32_t accepted;
uint32_t dropped;
uint32_t replaced;
struct {
uint32_t packet_id; /* id of last processed packet */
uint32_t verdict;
uint32_t mark;
uint8_t mark_valid:1;
uint8_t len;
uint8_t maxlen;
} verdict_cache;
} NFQQueueVars;
typedef struct NFQGlobalVars_
{
char unbind;
} NFQGlobalVars;
void NFQInitConfig(bool quiet);
int NFQRegisterQueue(const uint16_t number);
int NFQParseAndRegisterQueues(const char *queues);
void *NFQGetQueue(int number);
void *NFQGetThread(int number);
void NFQContextsClean(void);
#endif /* NFQ */
#endif /* __SOURCE_NFQ_H__ */
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