host.c File Reference

#include "suricata-common.h"
#include "conf.h"
#include "util-debug.h"
#include "host.h"
#include "host-storage.h"
#include "host-bit.h"
#include "util-random.h"
#include "util-misc.h"
#include "util-byte.h"
#include "util-validate.h"
#include "host-queue.h"
#include "detect-tag.h"
#include "detect-engine-tag.h"
#include "detect-engine-threshold.h"
#include "util-hash-lookup3.h"

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Macros
#define	HOST_DEFAULT_HASHSIZE   4096
#define	HOST_DEFAULT_MEMCAP   16777216
#define	HOST_DEFAULT_PREALLOC   1000

Functions
	SC_ATOMIC_DECLARE (uint64_t, host_memuse)
	SC_ATOMIC_DECLARE (uint32_t, host_counter)
	SC_ATOMIC_DECLARE (uint32_t, host_prune_idx)
int	HostSetMemcap (uint64_t size)
	Update memcap value.
uint64_t	HostGetMemcap (void)
	Return memcap value.
uint64_t	HostGetMemuse (void)
	Return memuse value.
void	HostMoveToSpare (Host *h)
Host *	HostAlloc (void)
void	HostFree (Host *h)
void	HostClearMemory (Host *h)
void	HostInitConfig (bool quiet)
	initialize the configuration
void	HostPrintStats (void)
	print some host stats
void	HostShutdown (void)
	shutdown the flow engine
void	HostCleanup (void)
	Cleanup the host engine.
void	HostRelease (Host *h)
void	HostLock (Host *h)
void	HostUnlock (Host *h)
Host *	HostGetHostFromHash (Address *a)
Host *	HostLookupHostFromHash (Address *a)
	look up a host in the hash
void	HostRegisterUnittests (void)

Variables
HostHashRow *	host_hash
HostConfig	host_config

Detailed Description

Author

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

Information about hosts.

Definition in file host.c.

Macro Definition Documentation

HOST_DEFAULT_HASHSIZE

#define HOST_DEFAULT_HASHSIZE   4096

Definition at line 162 of file host.c.

HOST_DEFAULT_MEMCAP

#define HOST_DEFAULT_MEMCAP   16777216

Definition at line 163 of file host.c.

HOST_DEFAULT_PREALLOC

#define HOST_DEFAULT_PREALLOC   1000

Definition at line 164 of file host.c.

Function Documentation

HostAlloc()

Host * HostAlloc

(

void

)

Definition at line 106 of file host.c.

References HOST_CHECK_MEMCAP, Host_::m, SC_ATOMIC_ADD, SC_ATOMIC_INIT, SCCalloc, SCMutexInit, and unlikely.

Referenced by HostInitConfig().

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HostCleanup()

void HostCleanup

(

void

)

Cleanup the host engine.

Cleanup the host engine from tag and threshold.

Definition at line 332 of file host.c.

References HostConfig_::hash_size, Host_::hnext, host_config, host_hash, HostClearMemory(), HostFreeStorage(), HostMoveToSpare(), Host_::hprev, HRLOCK_LOCK, HRLOCK_UNLOCK, Host_::iprep, and SC_ATOMIC_GET.

Referenced by PostRunDeinit().

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HostClearMemory()

void HostClearMemory

(

Host *

h

)

Definition at line 150 of file host.c.

References BUG_ON, HostFreeStorage(), HostStorageSize(), Host_::iprep, SC_ATOMIC_GET, and SRepFreeHostData().

Referenced by HostCleanup(), and HostFree().

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HostFree()

void HostFree

(

Host *

h

)

Definition at line 125 of file host.c.

References HostClearMemory(), Host_::m, SC_ATOMIC_SUB, SCFree, and SCMutexDestroy.

Referenced by HostShutdown().

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HostGetHostFromHash()

Host * HostGetHostFromHash

(

Address *

a

)

Definition at line 486 of file host.c.

References Host_::hnext, host_hash, HostIncrUsecnt, Host_::hprev, HRLOCK_LOCK, HRLOCK_UNLOCK, Host_::m, and SCMutexLock.

Referenced by SRepLoadFileFromFD(), and TagHashAddTag().

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HostGetMemcap()

uint64_t HostGetMemcap

(

void

)

Return memcap value.

Return values

memcap

value

Definition at line 83 of file host.c.

References host_config, and SC_ATOMIC_GET.

Referenced by AppLayerRegisterGlobalCounters().

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HostGetMemuse()

uint64_t HostGetMemuse

(

void

)

Return memuse value.

Return values

memuse

value

Definition at line 94 of file host.c.

References SC_ATOMIC_GET.

Referenced by AppLayerRegisterGlobalCounters().

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HostInitConfig()

void HostInitConfig

(

bool

quiet

)

initialize the configuration

Warning

Not thread safe

set config values for memcap, prealloc and hash_size

Definition at line 168 of file host.c.

References CLS, DEBUG_VALIDATE_BUG_ON, FatalError, HostConfig_::hash_rand, HostConfig_::hash_size, HOST_CHECK_MEMCAP, host_config, HOST_DEFAULT_HASHSIZE, HOST_DEFAULT_MEMCAP, HOST_DEFAULT_PREALLOC, host_hash, HostAlloc(), HostEnqueue(), HostQueueInit(), HostStorageSize(), HRLOCK_INIT, HostQueue_::len, ParseSizeStringU64(), HostConfig_::prealloc, RandomGet(), SC_ATOMIC_ADD, SC_ATOMIC_GET, SC_ATOMIC_INIT, SC_ATOMIC_SET, SCConfGet(), SCLogConfig, SCLogDebug, SCLogError, SCMallocAligned, StringParseUint32(), unlikely, and WarnInvalidConfEntry.

Referenced by PostConfLoadedSetup().

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HostLock()

void HostLock

(

Host *

h

)

Definition at line 467 of file host.c.

References Host_::m, and SCMutexLock.

HostLookupHostFromHash()

Host * HostLookupHostFromHash

(

Address *

a

)

look up a host in the hash

Parameters

a	address to look up

Return values

h	LOCKED host or NULL

Definition at line 585 of file host.c.

References Host_::hnext, host_hash, HostIncrUsecnt, Host_::hprev, HRLOCK_LOCK, HRLOCK_UNLOCK, Host_::m, and SCMutexLock.

HostMoveToSpare()

void HostMoveToSpare

(

Host *

h

)

Definition at line 100 of file host.c.

References HostEnqueue(), and SC_ATOMIC_SUB.

Referenced by HostCleanup().

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HostPrintStats()

void HostPrintStats

(

void

)

print some host stats

Warning

Not thread safe

Definition at line 284 of file host.c.

References host_config, SC_ATOMIC_GET, and SCLogPerf.

Referenced by HostShutdown(), and SRepInit().

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HostRegisterUnittests()

void HostRegisterUnittests

(

void

)

Definition at line 717 of file host.c.

References RegisterHostStorageTests().

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HostRelease()

void HostRelease

(

Host *

h

)

Definition at line 461 of file host.c.

References HostDecrUsecnt, Host_::m, and SCMutexUnlock.

Referenced by SRepLoadFileFromFD(), and TagHashAddTag().

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HostSetMemcap()

int HostSetMemcap

(

uint64_t

size

)

Update memcap value.

Parameters

size	new memcap value

Definition at line 68 of file host.c.

References host_config, SC_ATOMIC_GET, and SC_ATOMIC_SET.

HostShutdown()

void HostShutdown

(

void

)

shutdown the flow engine

Warning

Not thread safe

Definition at line 296 of file host.c.

References HostConfig_::hash_size, Host_::hnext, host_config, host_hash, HostDequeue(), HostFree(), HostPrintStats(), HostQueueDestroy(), HRLOCK_DESTROY, SC_ATOMIC_SUB, and SCFreeAligned.

Referenced by GlobalsDestroy().

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HostUnlock()

void HostUnlock

(

Host *

h

)

Definition at line 472 of file host.c.

References Host_::m, and SCMutexUnlock.

Referenced by TagHandlePacket().

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SC_ATOMIC_DECLARE() [1/3]

SC_ATOMIC_DECLARE	(	uint32_t	,
		host_counter
	)

SC_ATOMIC_DECLARE() [2/3]

SC_ATOMIC_DECLARE	(	uint32_t	,
		host_prune_idx
	)

SC_ATOMIC_DECLARE() [3/3]

SC_ATOMIC_DECLARE	(	uint64_t	,
		host_memuse
	)

Variable Documentation

host_config

HostConfig host_config

Definition at line 53 of file host.c.

Referenced by HostCleanup(), HostGetMemcap(), HostInitConfig(), HostPrintStats(), HostSetMemcap(), HostShutdown(), and HostTimeoutHash().

host_hash

HostHashRow* host_hash

host hash table

Definition at line 50 of file host.c.

Referenced by HostCleanup(), HostGetHostFromHash(), HostInitConfig(), HostLookupHostFromHash(), HostShutdown(), and HostTimeoutHash().