#include "decode.h"
#include "defrag.h"
#include "util-exception-policy.h"
#include "util-exception-policy-types.h"

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Data Structures
struct	DefragTrackerHashRow_

struct	DefragConfig_

Macros
#define	DRLOCK_MUTEX

#define	DRLOCK_TYPE SCMutex

#define	DRLOCK_INIT(fb) SCMutexInit(&(fb)->lock, NULL)

#define	DRLOCK_DESTROY(fb) SCMutexDestroy(&(fb)->lock)

#define	DRLOCK_LOCK(fb) SCMutexLock(&(fb)->lock)

#define	DRLOCK_TRYLOCK(fb) SCMutexTrylock(&(fb)->lock)

#define	DRLOCK_UNLOCK(fb) SCMutexUnlock(&(fb)->lock)

#define	DEFRAG_CHECK_MEMCAP(size) ((((uint64_t)SC_ATOMIC_GET(defrag_memuse) + (uint64_t)(size)) <= SC_ATOMIC_GET(defrag_config.memcap)))
	check if a memory alloc would fit in the memcap More...

Typedefs
typedef struct DefragTrackerHashRow_	DefragTrackerHashRow

typedef struct DefragConfig_	DefragConfig

Functions
	SC_ATOMIC_EXTERN (uint64_t, defrag_memuse)

	SC_ATOMIC_EXTERN (unsigned int, defragtracker_counter)

	SC_ATOMIC_EXTERN (unsigned int, defragtracker_prune_idx)

void	DefragInitConfig (bool quiet)
	initialize the configuration More...

void	DefragHashShutdown (void)
	shutdown the flow engine More...

DefragTracker *	DefragLookupTrackerFromHash (Packet *)
	look up a tracker in the hash More...

DefragTracker *	DefragGetTrackerFromHash (ThreadVars tv, DecodeThreadVars dtv, Packet *)

void	DefragTrackerRelease (DefragTracker *)

void	DefragTrackerClearMemory (DefragTracker *)

void	DefragTrackerMoveToSpare (DefragTracker *)

int	DefragTrackerSetMemcap (uint64_t)
	Update memcap value. More...

uint64_t	DefragTrackerGetMemcap (void)
	Return memcap value. More...

uint64_t	DefragTrackerGetMemuse (void)
	Return memuse value. More...

enum ExceptionPolicy	DefragGetMemcapExceptionPolicy (void)

Variables
DefragTrackerHashRow *	defragtracker_hash

DefragConfig	defrag_config

Detailed Description

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

Definition in file defrag-hash.h.

Macro Definition Documentation

◆ DEFRAG_CHECK_MEMCAP

#define DEFRAG_CHECK_MEMCAP ( size ) ((((uint64_t)SC_ATOMIC_GET(defrag_memuse) + (uint64_t)(size)) <= SC_ATOMIC_GET(defrag_config.memcap)))

check if a memory alloc would fit in the memcap

Parameters

size	memory allocation size to check

Return values

1	it fits
0	no fit

Definition at line 84 of file defrag-hash.h.

◆ DRLOCK_DESTROY

#define DRLOCK_DESTROY ( fb ) SCMutexDestroy(&(fb)->lock)

Definition at line 53 of file defrag-hash.h.

◆ DRLOCK_INIT

#define DRLOCK_INIT ( fb ) SCMutexInit(&(fb)->lock, NULL)

Definition at line 52 of file defrag-hash.h.

◆ DRLOCK_LOCK

#define DRLOCK_LOCK ( fb ) SCMutexLock(&(fb)->lock)

Definition at line 54 of file defrag-hash.h.

◆ DRLOCK_MUTEX

#define DRLOCK_MUTEX

Spinlocks or Mutex for the flow buckets.

Definition at line 35 of file defrag-hash.h.

◆ DRLOCK_TRYLOCK

#define DRLOCK_TRYLOCK ( fb ) SCMutexTrylock(&(fb)->lock)

Definition at line 55 of file defrag-hash.h.

◆ DRLOCK_TYPE

#define DRLOCK_TYPE SCMutex

Definition at line 51 of file defrag-hash.h.

◆ DRLOCK_UNLOCK

#define DRLOCK_UNLOCK ( fb ) SCMutexUnlock(&(fb)->lock)

Definition at line 56 of file defrag-hash.h.

Typedef Documentation

◆ DefragConfig

typedef struct DefragConfig_ DefragConfig

◆ DefragTrackerHashRow

typedef struct DefragTrackerHashRow_ DefragTrackerHashRow

Function Documentation

◆ DefragGetMemcapExceptionPolicy()

enum ExceptionPolicy DefragGetMemcapExceptionPolicy ( void )

Definition at line 74 of file defrag-hash.c.

◆ DefragGetTrackerFromHash()

DefragTracker* DefragGetTrackerFromHash	(	ThreadVars *	tv,
		DecodeThreadVars *	dtv,
		Packet *
	)

Definition at line 525 of file defrag-hash.c.

◆ DefragHashShutdown()

void DefragHashShutdown ( void )

shutdown the flow engine

Warning: Not thread safe

Definition at line 292 of file defrag-hash.c.

References DefragTrackerDequeue().

Referenced by DefragDestroy().

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◆ DefragInitConfig()

void DefragInitConfig ( bool quiet )

initialize the configuration

Warning: Not thread safe

set config values for memcap, prealloc and hash_size

Definition at line 169 of file defrag-hash.c.

References defrag_config, DefragTrackerStackInit(), SC_ATOMIC_INIT, and SCLogDebug.

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◆ DefragLookupTrackerFromHash()

DefragTracker* DefragLookupTrackerFromHash ( Packet * p )

look up a tracker in the hash

Parameters

a	address to look up

Return values

h	LOCKED tracker or NULL

Definition at line 620 of file defrag-hash.c.

◆ DefragTrackerClearMemory()

void DefragTrackerClearMemory ( DefragTracker * )

Definition at line 158 of file defrag-hash.c.

References DefragTrackerFreeFrags().

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◆ DefragTrackerGetMemcap()

uint64_t DefragTrackerGetMemcap ( void )

Return memcap value.

Return values

memcap value

Definition at line 63 of file defrag-hash.c.

References defrag_config, and SC_ATOMIC_GET.

◆ DefragTrackerGetMemuse()

uint64_t DefragTrackerGetMemuse ( void )

Return memuse value.

Return values

memuse value

Definition at line 74 of file defrag-hash.c.

References SC_ATOMIC_GET.

◆ DefragTrackerMoveToSpare()

void DefragTrackerMoveToSpare ( DefragTracker * )

Definition at line 85 of file defrag-hash.c.

References DefragTrackerEnqueue().

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◆ DefragTrackerRelease()

void DefragTrackerRelease ( DefragTracker * )

Definition at line 152 of file defrag-hash.c.

References DefragTrackerDecrUsecnt, DefragTracker_::lock, and SCMutexUnlock.

◆ DefragTrackerSetMemcap()

int DefragTrackerSetMemcap ( uint64_t size )

Update memcap value.

Parameters

size	new memcap value

Definition at line 48 of file defrag-hash.c.

References defrag_config, SC_ATOMIC_GET, and SC_ATOMIC_SET.

◆ SC_ATOMIC_EXTERN() [1/3]

SC_ATOMIC_EXTERN	(	uint64_t	,
		defrag_memuse
	)

◆ SC_ATOMIC_EXTERN() [2/3]

SC_ATOMIC_EXTERN	(	unsigned int	,
		defragtracker_counter
	)

◆ SC_ATOMIC_EXTERN() [3/3]

SC_ATOMIC_EXTERN	(	unsigned int	,
		defragtracker_prune_idx
	)

Variable Documentation

◆ defrag_config

DefragConfig defrag_config

Definition at line 32 of file defrag-hash.c.

Referenced by DefragInitConfig(), DefragTimeoutHash(), DefragTrackerGetMemcap(), and DefragTrackerSetMemcap().

◆ defragtracker_hash

DefragTrackerHashRow* defragtracker_hash

defrag tracker hash table

Definition at line 31 of file defrag-hash.c.

Referenced by DefragTimeoutHash().

Data Structures

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ DEFRAG_CHECK_MEMCAP

◆ DRLOCK_DESTROY

◆ DRLOCK_INIT

◆ DRLOCK_LOCK

◆ DRLOCK_MUTEX

◆ DRLOCK_TRYLOCK

◆ DRLOCK_TYPE

◆ DRLOCK_UNLOCK

Typedef Documentation

◆ DefragConfig

◆ DefragTrackerHashRow

Function Documentation

◆ DefragGetMemcapExceptionPolicy()

◆ DefragGetTrackerFromHash()

◆ DefragHashShutdown()

◆ DefragInitConfig()

◆ DefragLookupTrackerFromHash()

◆ DefragTrackerClearMemory()

◆ DefragTrackerGetMemcap()

◆ DefragTrackerGetMemuse()

◆ DefragTrackerMoveToSpare()

◆ DefragTrackerRelease()

◆ DefragTrackerSetMemcap()

◆ SC_ATOMIC_EXTERN() [1/3]

◆ SC_ATOMIC_EXTERN() [2/3]

◆ SC_ATOMIC_EXTERN() [3/3]

Variable Documentation

◆ defrag_config

◆ defragtracker_hash