util-prefilter.h File Reference

#include "util-debug.h"

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Data Structures
struct	PrefilterRuleStore_
	structure for storing potential rule matches More...

Macros
#define	PMQ_RESET(pmq)   (pmq)->rule_id_array_cnt = 0

Typedefs
typedef struct PrefilterRuleStore_	PrefilterRuleStore
	structure for storing potential rule matches More...

Functions
int	PrefilterAddSidsResize (PrefilterRuleStore *pmq, uint32_t new_size)
	Add array of Signature IDs to rule ID array. More...
int	PmqSetup (PrefilterRuleStore *)
	Setup a pmq. More...
void	PmqReset (PrefilterRuleStore *)
	Reset a Pmq for reusage. Meant to be called after a single search. More...
void	PmqCleanup (PrefilterRuleStore *)
	Cleanup a Pmq. More...
void	PmqFree (PrefilterRuleStore *)
	Cleanup and free a Pmq. More...

Detailed Description

Author

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

Definition in file util-prefilter.h.

Macro Definition Documentation

PMQ_RESET

#define PMQ_RESET

(

pmq

)

(pmq)->rule_id_array_cnt = 0

Definition at line 47 of file util-prefilter.h.

Typedef Documentation

PrefilterRuleStore

typedef struct PrefilterRuleStore_ PrefilterRuleStore

structure for storing potential rule matches

Helper structure for the prefilter engine. The Pattern Matchers and other prefilter engines will add rule id's for potential rule matches

Function Documentation

PmqCleanup()

void PmqCleanup

(

PrefilterRuleStore *

pmq

)

Cleanup a Pmq.

Parameters

pmq	Pattern matcher queue to be cleaned up.

Definition at line 113 of file util-prefilter.c.

References PrefilterRuleStore_::rule_id_array, and SCFree.

Referenced by PmqFree().

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PmqFree()

void PmqFree

(

PrefilterRuleStore *

pmq

)

Cleanup and free a Pmq.

Parameters

pmq	Pattern matcher queue to be free'd.

Definition at line 126 of file util-prefilter.c.

References PmqCleanup().

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PmqReset()

void PmqReset

(

PrefilterRuleStore *

pmq

)

Reset a Pmq for reusage. Meant to be called after a single search.

Parameters

pmq	Pattern matcher to be reset.

Todo:

memset is expensive, but we need it as we merge pmq's. We might use a flag so we can clear pmq's the old way if we can.

Definition at line 102 of file util-prefilter.c.

References PMQ_RESET.

PmqSetup()

int PmqSetup

(

PrefilterRuleStore *

pmq

)

Setup a pmq.

Parameters

pmq	Pattern matcher queue to be initialized

Return values

-1	error
0	ok

Definition at line 37 of file util-prefilter.c.

References PrefilterRuleStore_::rule_id_array, PrefilterRuleStore_::rule_id_array_cnt, PrefilterRuleStore_::rule_id_array_size, SCEnter, SCMalloc, SCReturnInt, and SigIntId.

PrefilterAddSidsResize()

int PrefilterAddSidsResize	(	PrefilterRuleStore *	pmq,
		uint32_t	new_size
	)

Add array of Signature IDs to rule ID array.

Checks size of the array first

Parameters

pmq	storage for match results
new_size	number of Signature IDs needing to be stored.

Definition at line 70 of file util-prefilter.c.

References PrefilterRuleStore_::rule_id_array, PrefilterRuleStore_::rule_id_array_size, SC_ERR_MEM_ALLOC, SCLogError, SCRealloc, SigIntId, and unlikely.