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84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/* Copyright (C) 2007-2014 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*/
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#ifndef __TMQH_PACKETPOOL_H__
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#define __TMQH_PACKETPOOL_H__
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#include "decode.h"
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#include "threads.h"
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#include "util-atomic.h"
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/* Return stack, onto which other threads free packets. */
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typedef struct PktPoolLockedStack_{
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/* linked list of free packets. */
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SCMutex mutex;
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SCCondT cond;
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SC_ATOMIC_DECLARE(int, sync_now);
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Packet *head;
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} __attribute__((aligned(CLS))) PktPoolLockedStack;
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typedef struct PktPool_ {
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/* link listed of free packets local to this thread.
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* No mutex is needed.
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*/
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Packet *head;
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/* Packets waiting (pending) to be returned to the given Packet
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* Pool. Accumulate packets for the same pool until a theshold is
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* reached, then return them all at once. Keep the head and tail
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* to fast insertion of the entire list onto a return stack.
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*/
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struct PktPool_ *pending_pool;
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Packet *pending_head;
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Packet *pending_tail;
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uint32_t pending_count;
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#ifdef DEBUG_VALIDATION
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int initialized;
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int destroyed;
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#endif /* DEBUG_VALIDATION */
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/* All members above this point are accessed locally by only one thread, so
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* these should live on their own cache line.
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*/
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/* Return stack, where other threads put packets that they free that belong
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* to this thread.
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*/
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PktPoolLockedStack return_stack;
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} PktPool;
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Packet *TmqhInputPacketpool(ThreadVars *);
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void TmqhOutputPacketpool(ThreadVars *, Packet *);
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void TmqhReleasePacketsToPacketPool(PacketQueue *);
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void TmqhPacketpoolRegister(void);
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Packet *PacketPoolGetPacket(void);
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void PacketPoolWait(void);
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void PacketPoolWaitForN(int n);
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void PacketPoolReturnPacket(Packet *p);
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void PacketPoolInit(void);
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void PacketPoolInitEmpty(void);
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void PacketPoolDestroy(void);
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void PacketPoolPostRunmodes(void);
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#endif /* __TMQH_PACKETPOOL_H__ */
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