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114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/* Copyright (C) 2007-2010 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*/
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#ifndef __FLOW_PRIVATE_H__
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#define __FLOW_PRIVATE_H__
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#include "flow-hash.h"
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#include "flow-queue.h"
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#include "util-atomic.h"
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/* global flow flags */
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/** Flow engine is in emergency mode. This means it doesn't have enough spare
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* flows for new flows and/or it's memcap limit it reached. In this state the
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* flow engine with evaluate flows with lower timeout settings. */
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#define FLOW_EMERGENCY 0x01
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/* Flow Time out values */
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#define FLOW_DEFAULT_NEW_TIMEOUT 30
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#define FLOW_DEFAULT_EST_TIMEOUT 300
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#define FLOW_DEFAULT_CLOSED_TIMEOUT 0
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#define FLOW_IPPROTO_TCP_NEW_TIMEOUT 30
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#define FLOW_IPPROTO_TCP_EST_TIMEOUT 300
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#define FLOW_IPPROTO_UDP_NEW_TIMEOUT 30
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#define FLOW_IPPROTO_UDP_EST_TIMEOUT 300
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#define FLOW_IPPROTO_ICMP_NEW_TIMEOUT 30
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#define FLOW_IPPROTO_ICMP_EST_TIMEOUT 300
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#define FLOW_DEFAULT_EMERG_NEW_TIMEOUT 10
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#define FLOW_DEFAULT_EMERG_EST_TIMEOUT 100
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#define FLOW_DEFAULT_EMERG_CLOSED_TIMEOUT 0
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#define FLOW_IPPROTO_TCP_EMERG_NEW_TIMEOUT 10
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#define FLOW_IPPROTO_TCP_EMERG_EST_TIMEOUT 100
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#define FLOW_IPPROTO_UDP_EMERG_NEW_TIMEOUT 10
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#define FLOW_IPPROTO_UDP_EMERG_EST_TIMEOUT 100
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#define FLOW_IPPROTO_ICMP_EMERG_NEW_TIMEOUT 10
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#define FLOW_IPPROTO_ICMP_EMERG_EST_TIMEOUT 100
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enum {
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FLOW_PROTO_DEFAULT = 0,
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FLOW_PROTO_TCP,
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FLOW_PROTO_UDP,
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FLOW_PROTO_ICMP,
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/* should be last */
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FLOW_PROTO_MAX,
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};
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/*
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* Variables
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*/
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/** FlowProto specific timeouts and free/state functions */
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FlowProto flow_proto[FLOW_PROTO_MAX];
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/** spare/unused/prealloced flows live here */
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FlowQueue flow_spare_q;
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/** Flows in the new/unreplied state live here */
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FlowQueue flow_new_q[FLOW_PROTO_MAX];
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/** All "established" flows live here, the top holds the
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* last recently used (lru) flow, so we can remove
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* that in case of memory problems and check it for
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* timeouts. */
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FlowQueue flow_est_q[FLOW_PROTO_MAX];
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/** All "closing" flows live here, the top holds the
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* last recently used (lru) flow, so we can remove
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* that in case of memory problems and check it for
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* timeouts. */
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FlowQueue flow_close_q[FLOW_PROTO_MAX];
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FlowBucket *flow_hash;
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FlowConfig flow_config;
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uint8_t flow_flags;
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/** flow memuse counter (atomic), for enforcing memcap limit */
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SC_ATOMIC_DECLARE(unsigned int, flow_memuse);
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//#define FLOWBITS_STATS
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#ifdef FLOWBITS_STATS
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uint32_t flowbits_memuse;
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uint32_t flowbits_memuse_max;
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uint32_t flowbits_added;
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uint32_t flowbits_removed;
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SCMutex flowbits_mutex;
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#endif /* FLOWBITS_STATS */
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#endif /* __FLOW_PRIVATE_H__ */
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