int server_stats_add_ipv4(SERVER_STATS *ssp, u_int8_t ip_proto, u_int32_t address, u_int16_t port,
u_int32_t *retcount)
{
SERVER_KEY *kp = &s_key;
u_int32_t one = 1;
u_int32_t *hitcountp = NULL;
int ret;
#ifdef DEBUG
u_int32_t hostaddress = ntohl(address);
#endif /* DEBUG */
if(ssp == NULL || retcount == NULL)
return FLOW_ENULL;
/* calls to this subsystem should only be made if we are really watching this. */
FLOWASSERT(ipset_contains(ssp->ipv4_watch, &hostaddress, IPV4_FAMILY));
/* make the key */
kp->address = address;
kp->port = port;
kp->protocol = ip_proto;
/* find the key, add 1 to it or add a new node to the table */
ret = sfxhash_add(ssp->ipv4_table, kp, &one);
switch(ret)
{
case SFXHASH_NOMEM:
/* NOMEM means that we would add it if we could but we're
* hard-core out of space. So, just assume we added it.
*/
case SFXHASH_OK:
*retcount = 1;
break;
case SFXHASH_INTABLE:
hitcountp = (u_int32_t *) sfxhash_mru(ssp->ipv4_table);
/* never let us wrap around to less hits */
if(!hitcountp)
{
/* this is an odd error! */
return FLOW_BADJUJU;
}
else
{
if((*hitcountp) < SERVER_STATS_MAX_HITCOUNT)
{
(*hitcountp)++;
}
}
break;
}
return FLOW_SUCCESS;
}
/**
* Get the most recently used flow from the cache
*
* @param flowcachep flow cache to operate on
* @param flowp where to put the flow
*
* @return FLOW_SUCCESS on success
*/
static INLINE int flowcache_mru(FLOWCACHE *flowcachep, FLOW **flowpp)
{
if(!flowcachep || !flowpp)
return FLOW_EINVALID;
*flowpp = sfxhash_mru(flowcachep->ipv4_table);
if(*flowpp == NULL)
return FLOW_NOTFOUND;
return FLOW_SUCCESS;
}
/**
* Get the most recently used flow from the cache
*
* @param sbp scoreboard to find
* @param sepp score entry pointer to fill in
*
* @return FLOW_SUCCESS on sucess
*/
static INLINE int scoreboard_mru(SCOREBOARD *sbp, SCORE_ENTRY **sepp)
{
if(!sbp || !sepp)
return FLOW_EINVALID;
*sepp = sfxhash_mru(sbp->ipv4_table);
if(*sepp == NULL)
return FLOW_NOTFOUND;
return FLOW_SUCCESS;
}
/**
** Get a tracker node by either finding one or starting a new one. We may
** return NULL, in which case we wait till the next packet.
*/
static int ps_tracker_get(PS_TRACKER **ht, PS_HASH_KEY *key)
{
int iRet;
*ht = (PS_TRACKER *)sfxhash_find(portscan_hash, (void *)key);
if(!(*ht))
{
iRet = sfxhash_add(portscan_hash, (void *)key, NULL);
if(iRet == SFXHASH_OK)
{
*ht = (PS_TRACKER *)sfxhash_mru(portscan_hash);
if(!(*ht))
return -1;
ps_tracker_init(*ht);
}
else
{
return -1;
}
}
return 0;
}