src/preprocessors/flow/flow_cache.h Source File

00001 #ifndef _FLOW_CACHE_H
00002 #define _FLOW_CACHE_H
00003 
00004 #include "flow.h"
00005 #include "sfxhash.h"
00006 
00007 #ifndef UINT64
00008 #define UINT64 unsigned long long
00009 #endif
00010 
00011 typedef struct _FCSTAT
00012 {
00013     UINT64 find_ops;
00014     UINT64 reversed_ops;
00015     UINT64 find_success;
00016     UINT64 find_fail;
00017     UINT64 new_flows;
00018     UINT64 released_flows;
00019 } FCSTAT;
00020 
00021 typedef struct _FLOWCACHE
00022 {
00023     SFXHASH *ipv4_table;
00024     /* statistics */
00025     FCSTAT total;            /* statistics for everything */
00026     FCSTAT per_proto[256];   /* statistics kept per protocol */
00027     unsigned int max_flowbits_bytes;
00028 } FLOWCACHE;
00029 
00030 
00031 int flowcache_init(FLOWCACHE *flowcachep, unsigned int rows, int memcap,
00032                    int datasize, FLOWHASHID hashid);
00033 int flowcache_destroy(FLOWCACHE *flowcachep);
00034 int flowcache_releaseflow(FLOWCACHE *flowcachep, FLOW **flowpp);
00035 int flowcache_newflow(FLOWCACHE *flowcachep, FLOWKEY *keyp, FLOW **flowpp);
00036 int flowcache_find(FLOWCACHE *flowcachep, FLOWKEY *keyp,
00037                    FLOW **flowpp, int *direction);
00038 
00039 void flowcache_stats(FILE *stream, FLOWCACHE *flowcachep);
00040 
00041 int flowcache_overhead_bytes(FLOWCACHE *fcp);
00042 
00043 int flowcache_memcap(FLOWCACHE *fcp);
00044 int flowcache_row_count(FLOWCACHE *fcp);
00045 
00046 /* utilty functions */
00047 const char *flowcache_pname(FLOW_POSITION position);
00048 
00049 #endif /* _FLOW_CACHE_H */