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/* Copyright (C) 2007-2013 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 __HOST_H__
#define __HOST_H__
#include "decode.h"
#include "util-storage.h"
/** Spinlocks or Mutex for the flow buckets. */
//#define HRLOCK_SPIN
#define HRLOCK_MUTEX
#ifdef HRLOCK_SPIN
#ifdef HRLOCK_MUTEX
#error Cannot enable both HRLOCK_SPIN and HRLOCK_MUTEX
#endif
#endif
#ifdef HRLOCK_SPIN
#define HRLOCK_TYPE SCSpinlock
#define HRLOCK_INIT(fb) SCSpinInit(&(fb)->lock, 0)
#define HRLOCK_DESTROY(fb) SCSpinDestroy(&(fb)->lock)
#define HRLOCK_LOCK(fb) SCSpinLock(&(fb)->lock)
#define HRLOCK_TRYLOCK(fb) SCSpinTrylock(&(fb)->lock)
#define HRLOCK_UNLOCK(fb) SCSpinUnlock(&(fb)->lock)
#elif defined HRLOCK_MUTEX
#define HRLOCK_TYPE SCMutex
#define HRLOCK_INIT(fb) SCMutexInit(&(fb)->lock, NULL)
#define HRLOCK_DESTROY(fb) SCMutexDestroy(&(fb)->lock)
#define HRLOCK_LOCK(fb) SCMutexLock(&(fb)->lock)
#define HRLOCK_TRYLOCK(fb) SCMutexTrylock(&(fb)->lock)
#define HRLOCK_UNLOCK(fb) SCMutexUnlock(&(fb)->lock)
#else
#error Enable HRLOCK_SPIN or HRLOCK_MUTEX
#endif
typedef struct Host_ {
/** host mutex */
SCMutex m;
/** host address -- ipv4 or ipv6 */
Address a;
/** use cnt, reference counter */
SC_ATOMIC_DECLARE(unsigned int, use_cnt);
/** pointers to iprep storage */
void *iprep;
/** storage api handle */
Storage *storage;
/** hash pointers, protected by hash row mutex/spin */
struct Host_ *hnext;
struct Host_ *hprev;
/** list pointers, protected by host-queue mutex/spin */
struct Host_ *lnext;
struct Host_ *lprev;
} Host;
typedef struct HostHashRow_ {
HRLOCK_TYPE lock;
Host *head;
Host *tail;
} __attribute__((aligned(CLS))) HostHashRow;
/** host hash table */
HostHashRow *host_hash;
#define HOST_VERBOSE 0
#define HOST_QUIET 1
typedef struct HostConfig_ {
uint64_t memcap;
uint32_t hash_rand;
uint32_t hash_size;
uint32_t prealloc;
} HostConfig;
/** \brief check if a memory alloc would fit in the memcap
*
* \param size memory allocation size to check
*
* \retval 1 it fits
* \retval 0 no fit
*/
#define HOST_CHECK_MEMCAP(size) \
((((uint64_t)SC_ATOMIC_GET(host_memuse) + (uint64_t)(size)) <= host_config.memcap))
#define HostIncrUsecnt(h) \
(void)SC_ATOMIC_ADD((h)->use_cnt, 1)
#define HostDecrUsecnt(h) \
(void)SC_ATOMIC_SUB((h)->use_cnt, 1)
#define HostReference(dst_h_ptr, h) do { \
if ((h) != NULL) { \
HostIncrUsecnt((h)); \
*(dst_h_ptr) = h; \
} \
} while (0)
#define HostDeReference(src_h_ptr) do { \
if (*(src_h_ptr) != NULL) { \
HostDecrUsecnt(*(src_h_ptr)); \
*(src_h_ptr) = NULL; \
} \
} while (0)
HostConfig host_config;
SC_ATOMIC_DECLARE(unsigned long long int,host_memuse);
SC_ATOMIC_DECLARE(unsigned int,host_counter);
SC_ATOMIC_DECLARE(unsigned int,host_prune_idx);
void HostInitConfig(char quiet);
void HostShutdown(void);
void HostCleanup(void);
Host *HostLookupHostFromHash (Address *);
Host *HostGetHostFromHash (Address *);
void HostRelease(Host *);
void HostLock(Host *);
void HostClearMemory(Host *);
void HostMoveToSpare(Host *);
uint32_t HostSpareQueueGetSize(void);
void HostPrintStats (void);
void HostRegisterUnittests(void);
Host *HostAlloc();
void HostFree();
void HostUnlock(Host *h);
#endif /* __HOST_H__ */
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