flow-util.c File Reference

#include "suricata-common.h"
#include "threads.h"
#include "flow.h"
#include "flow-private.h"
#include "flow-util.h"
#include "flow-var.h"
#include "app-layer.h"
#include "util-var.h"
#include "util-debug.h"
#include "flow-storage.h"
#include "detect.h"
#include "detect-engine-state.h"
#include "decode-icmpv4.h"

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Functions
Flow *	FlowAlloc (void)
	allocate a flow More...
void	FlowFree (Flow *f)
	cleanup & free the memory of a flow More...
uint8_t	FlowGetProtoMapping (uint8_t proto)
	Function to map the protocol to the defined FLOW_PROTO_* enumeration. More...
uint8_t	FlowGetReverseProtoMapping (uint8_t rproto)
void	FlowInit (Flow *f, const Packet *p)
int	GetFlowBypassInfoID (void)
void	RegisterFlowBypassInfo (void)

Variables
int	g_bypass_info_id = -1

Detailed Description

Author

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

Flow utility functions

Definition in file flow-util.c.

Function Documentation

Flow* FlowAlloc

(

void

)

allocate a flow

We check against the memuse counter. If it passes that check we increment the counter first, then we try to alloc.

Return values

f	the flow or NULL on out of memory

Definition at line 51 of file flow-util.c.

References FLOW_CHECK_MEMCAP, FLOW_INITIALIZE, FlowStorageSize(), SC_ATOMIC_ADD, SC_ATOMIC_SUB, SCMalloc, and unlikely.

Referenced by FlowGetFromFlowKey(), FlowInitConfig(), FlowSetupPacket(), FlowStorageRegister(), FlowUpdateSpareFlows(), and TagTimeoutCheck().

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void FlowFree

(

Flow *

f

)

cleanup & free the memory of a flow

Parameters

f	flow to clear & destroy

Definition at line 80 of file flow-util.c.

References FLOW_DESTROY, FlowStorageSize(), SC_ATOMIC_SUB, and SCFree.

Referenced by AppLayerParserStreamTruncated(), FlowShutdown(), FlowStorageRegister(), FlowUpdateSpareFlows(), and UTHFreeFlow().

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uint8_t FlowGetProtoMapping

(

uint8_t

proto

)

Function to map the protocol to the defined FLOW_PROTO_* enumeration.

Parameters

proto

protocol which is needed to be mapped

Definition at line 95 of file flow-util.c.

References FLOW_PROTO_DEFAULT, FLOW_PROTO_ICMP, FLOW_PROTO_SCTP, FLOW_PROTO_TCP, and FLOW_PROTO_UDP.

Referenced by AppLayerGetTxIterator(), AppLayerParserDestroyProtocolParserLocalStorage(), AppLayerParserGetEventInfo(), AppLayerParserGetEventInfoById(), AppLayerParserGetEventsByTx(), AppLayerParserGetFiles(), AppLayerParserGetFirstDataDir(), AppLayerParserGetProtocolParserLocalStorage(), AppLayerParserGetStateProgress(), AppLayerParserGetTx(), AppLayerParserGetTxDetectFlags(), AppLayerParserGetTxDetectState(), AppLayerParserParse(), AppLayerParserProtocolGetLoggerBits(), AppLayerParserProtocolHasLogger(), AppLayerParserProtocolIsTxEventAware(), AppLayerParserProtoIsRegistered(), AppLayerParserRegisterDetectFlagsFuncs(), AppLayerParserRegisterDetectStateFuncs(), AppLayerParserRegisterGetEventInfo(), AppLayerParserRegisterGetEventInfoById(), AppLayerParserRegisterGetEventsFunc(), AppLayerParserRegisterGetFilesFunc(), AppLayerParserRegisterGetStateProgressFunc(), AppLayerParserRegisterGetTx(), AppLayerParserRegisterGetTxCnt(), AppLayerParserRegisterGetTxIterator(), AppLayerParserRegisterLocalStorageFunc(), AppLayerParserRegisterLogger(), AppLayerParserRegisterLoggerBits(), AppLayerParserRegisterLoggerFuncs(), AppLayerParserRegisterOptionFlags(), AppLayerParserRegisterParser(), AppLayerParserRegisterParserAcceptableDataDirection(), AppLayerParserRegisterProtocolUnittests(), AppLayerParserRegisterStateFuncs(), AppLayerParserRegisterTruncateFunc(), AppLayerParserRegisterTxFreeFunc(), AppLayerParserRestoreParserTable(), AppLayerParserSetStreamDepth(), AppLayerParserSetTxDetectFlags(), AppLayerParserSetTxLogged(), AppLayerParserStateCleanup(), AppLayerParserStreamTruncated(), AppLayerParserSupportsFiles(), AppLayerParserSupportsTxDetectState(), AppLayerProtoDetectUnittestCtxRestore(), AppLayerRegisterThreadCounters(), AppLayerSetupCounters(), DetectDnsQueryRegister(), FlowGetFromFlowKey(), FlowInit(), FlowSetProtoFreeFunc(), FlowShutdown(), FlowUpdateState(), RegisterDCERPCUDPParsers(), and TagTimeoutCheck().

uint8_t FlowGetReverseProtoMapping

(

uint8_t

rproto

)

Definition at line 111 of file flow-util.c.

References FLOW_PROTO_ICMP, FLOW_PROTO_SCTP, FLOW_PROTO_TCP, FLOW_PROTO_UDP, Flow_::icmp_d, Flow_::icmp_s, ICMPv4GetCounterpart(), and ICMPv6GetCounterpart().

Referenced by AppLayerParserThreadCtxAlloc(), and AppLayerParserThreadCtxFree().

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void FlowInit	(	Flow *	f,
		const Packet *	p
	)

Definition at line 147 of file flow-util.c.

References COPY_TIMESTAMP, Flow_::dp, Flow_::dst, Flow_::flags, FLOW_IPV4, FLOW_IPV6, FLOW_SET_IPV4_DST_ADDR_FROM_PACKET, FLOW_SET_IPV4_SRC_ADDR_FROM_PACKET, FLOW_SET_IPV6_DST_ADDR_FROM_PACKET, FLOW_SET_IPV6_SRC_ADDR_FROM_PACKET, FlowGetProtoMapping(), Flow_::icmp_s, Packet_::icmp_s, Packet_::icmpv4h, Packet_::icmpv6h, IPV4_GET_IPTTL, IPV6_GET_HLIM, Flow_::livedev, Packet_::livedev, Flow_::max_ttl_toserver, Flow_::min_ttl_toserver, PKT_IS_IPV4, PKT_IS_IPV6, Flow_::proto, Packet_::proto, Flow_::protomap, Flow_::recursion_level, Packet_::recursion_level, SCEnter, SCLogDebug, SCReturn, Packet_::sctph, SET_SCTP_DST_PORT, SET_SCTP_SRC_PORT, SET_TCP_DST_PORT, SET_TCP_SRC_PORT, SET_UDP_DST_PORT, SET_UDP_SRC_PORT, Flow_::sp, Flow_::src, Flow_::startts, Packet_::tcph, Packet_::ts, Packet_::udph, Flow_::vlan_id, Packet_::vlan_id, Flow_::vlan_idx, and Packet_::vlan_idx.

Referenced by FlowGetFlowFromHash(), and FlowSetupPacket().

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int GetFlowBypassInfoID

(

void

)

Definition at line 209 of file flow-util.c.

References FlowBypassInfo_::bypass_data, FlowBypassInfo_::BypassFree, g_bypass_info_id, and SCFree.

Referenced by AFPSetBPFFilter(), FlowDisableFlowManagerThread(), and PacketBypassCallback().

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void RegisterFlowBypassInfo

(

void

)

Definition at line 227 of file flow-util.c.

References FlowStorageRegister(), and g_bypass_info_id.

Referenced by PostRunDeinit().

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Variable Documentation

int g_bypass_info_id = -1

Definition at line 207 of file flow-util.c.

Referenced by GetFlowBypassInfoID(), and RegisterFlowBypassInfo().