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/* Copyright (C) 2007-2014 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 __TMQH_PACKETPOOL_H__
#define __TMQH_PACKETPOOL_H__
#include "decode.h"
#include "threads.h"
#include "util-atomic.h"
/* Return stack, onto which other threads free packets. */
typedef struct PktPoolLockedStack_{
/* linked list of free packets. */
SCMutex mutex;
SCCondT cond;
SC_ATOMIC_DECLARE(int, sync_now);
Packet *head;
} __attribute__((aligned(CLS))) PktPoolLockedStack;
typedef struct PktPool_ {
/* link listed of free packets local to this thread.
* No mutex is needed.
*/
Packet *head;
/* Packets waiting (pending) to be returned to the given Packet
* Pool. Accumulate packets for the same pool until a theshold is
* reached, then return them all at once. Keep the head and tail
* to fast insertion of the entire list onto a return stack.
*/
struct PktPool_ *pending_pool;
Packet *pending_head;
Packet *pending_tail;
uint32_t pending_count;
#ifdef DEBUG_VALIDATION
int initialized;
int destroyed;
#endif /* DEBUG_VALIDATION */
/* All members above this point are accessed locally by only one thread, so
* these should live on their own cache line.
*/
/* Return stack, where other threads put packets that they free that belong
* to this thread.
*/
PktPoolLockedStack return_stack;
} PktPool;
Packet *TmqhInputPacketpool(ThreadVars *);
void TmqhOutputPacketpool(ThreadVars *, Packet *);
void TmqhReleasePacketsToPacketPool(PacketQueue *);
void TmqhPacketpoolRegister(void);
Packet *PacketPoolGetPacket(void);
void PacketPoolWait(void);
void PacketPoolWaitForN(int n);
void PacketPoolReturnPacket(Packet *p);
void PacketPoolInit(void);
void PacketPoolInitEmpty(void);
void PacketPoolDestroy(void);
void PacketPoolPostRunmodes(void);
#endif /* __TMQH_PACKETPOOL_H__ */
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