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/* Copyright (C) 2011,2012 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 Eric Leblond <eric@regit.org>
*/
#ifndef __SOURCE_AFP_H__
#define __SOURCE_AFP_H__
#ifndef HAVE_PACKET_FANOUT /* not defined if linux/if_packet.h trying to force */
#define HAVE_PACKET_FANOUT 1
#define PACKET_FANOUT 18
#define PACKET_FANOUT_HASH 0
#define PACKET_FANOUT_LB 1
#define PACKET_FANOUT_CPU 2
#define PACKET_FANOUT_ROLLOVER 3
#define PACKET_FANOUT_RND 4
#define PACKET_FANOUT_QM 5
#define PACKET_FANOUT_FLAG_ROLLOVER 0x1000
#define PACKET_FANOUT_FLAG_DEFRAG 0x8000
#else /* HAVE_PACKET_FANOUT */
#include <linux/if_packet.h>
#endif /* HAVE_PACKET_FANOUT */
#include "queue.h"
/* value for flags */
#define AFP_RING_MODE (1<<0)
#define AFP_ZERO_COPY (1<<1)
#define AFP_SOCK_PROTECT (1<<2)
#define AFP_EMERGENCY_MODE (1<<3)
#define AFP_COPY_MODE_NONE 0
#define AFP_COPY_MODE_TAP 1
#define AFP_COPY_MODE_IPS 2
#define AFP_FILE_MAX_PKTS 256
#define AFP_IFACE_NAME_LENGTH 48
typedef struct AFPIfaceConfig_
{
char iface[AFP_IFACE_NAME_LENGTH];
/* number of threads */
int threads;
/* socket buffer size */
int buffer_size;
/* ring size in number of packets */
int ring_size;
/* cluster param */
int cluster_id;
int cluster_type;
/* promisc mode */
int promisc;
/* misc use flags including ring mode */
int flags;
int copy_mode;
ChecksumValidationMode checksum_mode;
char *bpf_filter;
char *out_iface;
SC_ATOMIC_DECLARE(unsigned int, ref);
void (*DerefFunc)(void *);
} AFPIfaceConfig;
/**
* \ingroup afppeers
* @{
*/
typedef struct AFPPeer_ {
char iface[AFP_IFACE_NAME_LENGTH];
SC_ATOMIC_DECLARE(int, socket);
SC_ATOMIC_DECLARE(int, sock_usage);
SC_ATOMIC_DECLARE(int, if_idx);
SC_ATOMIC_DECLARE(uint8_t, state);
SCMutex sock_protect;
int flags;
int turn; /**< Field used to store initialisation order. */
struct AFPPeer_ *peer;
TAILQ_ENTRY(AFPPeer_) next;
} AFPPeer;
/**
* \brief per packet AF_PACKET vars
*
* This structure is used y the release data system and is cleaned
* up by the AFPV_CLEANUP macro below.
*/
typedef struct AFPPacketVars_
{
void *relptr;
int copy_mode;
AFPPeer *peer; /**< Sending peer for IPS/TAP mode */
/** Pointer to ::AFPPeer used for capture. Field is used to be able
* to do reference counting.
*/
AFPPeer *mpeer;
} AFPPacketVars;
#define AFPV_CLEANUP(afpv) do { \
(afpv)->relptr = NULL; \
(afpv)->copy_mode = 0; \
(afpv)->peer = NULL; \
(afpv)->mpeer = NULL; \
} while(0)
/**
* @}
*/
void TmModuleReceiveAFPRegister (void);
void TmModuleDecodeAFPRegister (void);
TmEcode AFPPeersListInit();
TmEcode AFPPeersListCheck();
void AFPPeersListClean();
#endif /* __SOURCE_AFP_H__ */
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