/* Copyright (C) 2011-2016 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.
 */

#ifndef __UTIL_DEVICE_H__
#define __UTIL_DEVICE_H__

#ifdef HAVE_DPDK
#include <rte_mempool.h>
#endif /* HAVE_DPDK */

#include "queue.h"

#define OFFLOAD_FLAG_SG     (1<<0)
#define OFFLOAD_FLAG_TSO    (1<<1)
#define OFFLOAD_FLAG_GSO    (1<<2)
#define OFFLOAD_FLAG_GRO    (1<<3)
#define OFFLOAD_FLAG_LRO    (1<<4)
#define OFFLOAD_FLAG_RXCSUM (1<<5)
#define OFFLOAD_FLAG_TXCSUM (1<<6)
#define OFFLOAD_FLAG_TOE    (1<<7)

void LiveSetOffloadDisable(void);
void LiveSetOffloadWarn(void);
int LiveGetOffload(void);

#define MAX_DEVNAME 10

#ifdef HAVE_DPDK
typedef struct {
    struct rte_mempool *pkt_mp;
} DPDKDeviceResources;
#endif /* HAVE_DPDK */

/** storage for live device names */
typedef struct LiveDevice_ {
    char *dev;  /**< the device (e.g. "eth0") */
    char dev_short[MAX_DEVNAME + 1];
    int mtu; /* MTU of the device */
    bool tenant_id_set;

    uint16_t id;

    SC_ATOMIC_DECLARE(uint64_t, pkts);
    SC_ATOMIC_DECLARE(uint64_t, drop);
    SC_ATOMIC_DECLARE(uint64_t, bypassed);
    SC_ATOMIC_DECLARE(uint64_t, invalid_checksums);
    TAILQ_ENTRY(LiveDevice_) next;

    uint32_t tenant_id;     /**< tenant id in multi-tenancy */
    uint32_t offload_orig;  /**< original offload settings to restore @exit */
#ifdef HAVE_DPDK
    // DPDK resources that needs to be cleaned after workers are stopped and devices closed
    DPDKDeviceResources dpdk_vars;
#endif
} LiveDevice;

typedef struct LiveDeviceName_ {
    char *dev;  /**< the device (e.g. "eth0") */
    TAILQ_ENTRY(LiveDeviceName_) next;
} LiveDeviceName;

void LiveDevRegisterExtension(void);

int LiveRegisterDeviceName(const char *dev);
int LiveRegisterDevice(const char *dev);
int LiveDevUseBypass(LiveDevice *dev);
void LiveDevSetBypassStats(LiveDevice *dev, uint64_t cnt, int family);
void LiveDevAddBypassStats(LiveDevice *dev, uint64_t cnt, int family);
void LiveDevSubBypassStats(LiveDevice *dev, uint64_t cnt, int family);
void LiveDevAddBypassFail(LiveDevice *dev, uint64_t cnt, int family);
void LiveDevAddBypassSuccess(LiveDevice *dev, uint64_t cnt, int family);
int LiveGetDeviceCount(void);
const char *LiveGetDeviceName(int number);
LiveDevice *LiveGetDevice(const char *dev);
const char *LiveGetShortName(const char *dev);
int LiveBuildDeviceList(const char *base);
void LiveDeviceHasNoStats(void);
int LiveDeviceListClean(void);
int LiveBuildDeviceListCustom(const char *base, const char *itemname);

LiveDevice *LiveDeviceForEach(LiveDevice **ldev, LiveDevice **ndev);

void LiveDeviceFinalize(void);

#ifdef BUILD_UNIX_SOCKET
TmEcode LiveDeviceIfaceStat(json_t *cmd, json_t *server_msg, void *data);
TmEcode LiveDeviceIfaceList(json_t *cmd, json_t *server_msg, void *data);
TmEcode LiveDeviceGetBypassedStats(json_t *cmd, json_t *answer, void *data);
#endif

#endif /* __UTIL_DEVICE_H__ */