tmqh-packetpool.h File Reference

#include "decode.h"
#include "threads.h"

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Data Structures
struct	PktPoolLockedStack_
struct	PktPool_

Typedefs
typedef struct PktPool_	PktPool

Functions
struct PktPoolLockedStack_	__attribute__ ((aligned(CLS))) PktPoolLockedStack
	SC_ATOMIC_DECLARE (uint32_t, return_threshold)
Packet *	TmqhInputPacketpool (ThreadVars *)
void	TmqhOutputPacketpool (ThreadVars *, Packet *)
void	TmqhReleasePacketsToPacketPool (PacketQueue *)
	Release all the packets in the queue back to the packetpool. Mainly used by threads that have failed, and wants to return the packets back to the packetpool. More...
void	TmqhPacketpoolRegister (void)
	TmqhPacketpoolRegister \initonly. More...
Packet *	PacketPoolGetPacket (void)
	Get a new packet from the packet pool. More...
void	PacketPoolWait (void)
void	PacketPoolReturnPacket (Packet *p)
	Return packet to Packet pool. More...
void	PacketPoolInit (void)
void	PacketPoolDestroy (void)
void	PacketPoolPostRunmodes (void)
	Set the max_pending_return_packets value. More...

Variables
SCMutex	mutex
SCCondT	cond
uint32_t	cnt
Packet *	head

Detailed Description

Author

Victor Julien victo.nosp@m.r@in.nosp@m.linia.nosp@m.c.ne.nosp@m.t

Definition in file tmqh-packetpool.h.

Typedef Documentation

PktPool

typedef struct PktPool_ PktPool

Function Documentation

__attribute__()

struct PktPoolLockedStack_ __attribute__

(

(aligned(CLS))

)

Definition at line 2064 of file tm-threads.c.

PacketPoolDestroy()

void PacketPoolDestroy

(

void

)

Definition at line 274 of file tmqh-packetpool.c.

Referenced by SCTmThreadsSlotPktAcqLoopFinish().

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PacketPoolGetPacket()

Packet* PacketPoolGetPacket

(

void

)

Get a new packet from the packet pool.

Only allocates from the thread's local stack, or mallocs new packets. If the local stack is empty, first move all the return stack packets to the local stack.

Return values

Packet

pointer, or NULL on failure.

Definition at line 127 of file tmqh-packetpool.c.

Referenced by FlowPseudoPacketGet(), PacketGetFromQueueOrAlloc(), and TmqhInputPacketpool().

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PacketPoolInit()

void PacketPoolInit

(

void

)

Definition at line 244 of file tmqh-packetpool.c.

Referenced by PostRunDeinit().

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PacketPoolPostRunmodes()

void PacketPoolPostRunmodes

(

void

)

Set the max_pending_return_packets value.

Set it to the max pending packets value, divided by the number of lister threads. Normally, in autofp these are the stream/detect/log worker threads.

The max_pending_return_packets value needs to stay below the packet pool size of the 'producers' (normally pkt capture threads but also flow timeout injection ) to avoid a deadlock where all the 'workers' keep packets in their return pools, while the capture thread can't continue because its pool is empty.

Definition at line 459 of file tmqh-packetpool.c.

References FatalError, max_pending_packets, RESERVED_PACKETS, TM_FLAG_DETECT_TM, and TmThreadCountThreadsByTmmFlags().

Referenced by SuricataPostInit().

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PacketPoolReturnPacket()

void PacketPoolReturnPacket

(

Packet *

p

)

Return packet to Packet pool.

Definition at line 177 of file tmqh-packetpool.c.

Referenced by PacketFreeOrRelease(), and PacketGetFromQueueOrAlloc().

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PacketPoolWait()

void PacketPoolWait

(

void

)

Definition at line 80 of file tmqh-packetpool.c.

Referenced by FlowPseudoPacketGet(), and ReceiveErfFileLoop().

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SC_ATOMIC_DECLARE()

__attribute__::SC_ATOMIC_DECLARE	(	uint32_t	,
		return_threshold
	)

number of packets in needed to trigger a sync during the return to pool logic. Updated by pool owner based on how full the pool is.

TmqhInputPacketpool()

Packet* TmqhInputPacketpool

(

ThreadVars *

)

Definition at line 309 of file tmqh-packetpool.c.

References PacketPoolGetPacket().

Referenced by TmqhPacketpoolRegister().

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TmqhOutputPacketpool()

void TmqhOutputPacketpool	(	ThreadVars *	,
		Packet *
	)

Definition at line 314 of file tmqh-packetpool.c.

References BOOL2STR, Packet_::pool, Packet_::root, SCEnter, and SCLogDebug.

Referenced by TmqhPacketpoolRegister(), and TmqhReleasePacketsToPacketPool().

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TmqhPacketpoolRegister()

void TmqhPacketpoolRegister

(

void

)

TmqhPacketpoolRegister \initonly.

Definition at line 55 of file tmqh-packetpool.c.

References Tmqh_::InHandler, Tmqh_::name, Tmqh_::OutHandler, TMQH_PACKETPOOL, tmqh_table, TmqhInputPacketpool(), and TmqhOutputPacketpool().

Referenced by TmqhSetup().

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TmqhReleasePacketsToPacketPool()

void TmqhReleasePacketsToPacketPool

(

PacketQueue *

pq

)

Release all the packets in the queue back to the packetpool. Mainly used by threads that have failed, and wants to return the packets back to the packetpool.

Parameters

pq	Pointer to the packetqueue from which the packets have to be returned back to the packetpool

Warning

this function assumes that the pq does not use locking

Definition at line 427 of file tmqh-packetpool.c.

References DEBUG_VALIDATE_BUG_ON, Packet_::flow, PacketDequeue(), and TmqhOutputPacketpool().

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Variable Documentation

cnt

uint32_t cnt

Definition at line 7 of file tmqh-packetpool.h.

Referenced by DefragTimeoutHash(), DetectPortPrintList(), DetectSetFastPatternAndItsId(), HostTimeoutHash(), IPPairTimeoutHash(), LLVMFuzzerTestOneInput(), MpmStorePrepareBuffer(), OutputSetupActiveLoggers(), SigGroupHeadSetSigCnt(), SigPrepareStage4(), StreamTcpSegmentForEach(), StreamTcpSegmentForSession(), THashExpire(), TmThreadCountThreadsByTmmFlags(), UTHCheckDataAtPosition(), and UTHCheckGapAtPosition().

cond

SCCondT cond

Definition at line 2 of file tmqh-packetpool.h.

head

Packet* head

Definition at line 8 of file tmqh-packetpool.h.

mutex

SCMutex mutex

Definition at line 1 of file tmqh-packetpool.h.