defrag-hash.h File Reference

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

Include dependency graph for defrag-hash.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

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 85 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 71 of file defrag-hash.c.

DefragGetTrackerFromHash()

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

Definition at line 545 of file defrag-hash.c.

DefragHashShutdown()

void DefragHashShutdown

(

void

)

shutdown the flow engine

Warning

Not thread safe

Definition at line 300 of file defrag-hash.c.

Referenced by DefragDestroy().

Here is the caller graph for this function:

DefragInitConfig()

void DefragInitConfig

(

bool

quiet

)

initialize the configuration

Warning

Not thread safe

set config values for memcap, prealloc and hash_size

Definition at line 164 of file defrag-hash.c.

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

Here is the call graph for this function:

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 644 of file defrag-hash.c.

DefragTrackerClearMemory()

void DefragTrackerClearMemory

(

DefragTracker *

)

Definition at line 153 of file defrag-hash.c.

References DefragTrackerFreeFrags().

Here is the call graph for this function:

DefragTrackerGetMemcap()

uint64_t DefragTrackerGetMemcap

(

void

)

Return memcap value.

Return values

memcap

value

Definition at line 60 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 71 of file defrag-hash.c.

References SC_ATOMIC_GET.

DefragTrackerMoveToSpare()

void DefragTrackerMoveToSpare

(

DefragTracker *

)

Definition at line 82 of file defrag-hash.c.

References DefragTrackerEnqueue().

Here is the call graph for this function:

DefragTrackerRelease()

void DefragTrackerRelease

(

DefragTracker *

)

Definition at line 147 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 45 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 30 of file defrag-hash.c.

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

defragtracker_hash

DefragTrackerHashRow* defragtracker_hash

defrag tracker hash table

Definition at line 29 of file defrag-hash.c.

Referenced by DefragTimeoutHash().