packet.c File Reference

#include "packet.h"
#include "pkt-var.h"
#include "flow.h"
#include "host.h"
#include "util-profiling.h"
#include "util-validate.h"
#include "action-globals.h"
#include "app-layer-events.h"

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Macros
#define	CLEAR_ADDR(a)
#define	PACKET_RESET_ACTION(p)   (p)->action = 0
#define	RESET_PKT_LEN(p)   ((p)->pktlen = 0)

Functions
void	PacketDrop (Packet *p, const uint8_t action, enum PacketDropReason r)
	issue drop action More...
bool	PacketCheckAction (const Packet *p, const uint8_t a)
void	PacketInit (Packet *p)
	Initialize a packet structure for use. More...
void	PacketReleaseRefs (Packet *p)
void	PacketReinit (Packet *p)
	Recycle a packet structure for reuse. More...
void	PacketRecycle (Packet *p)
void	PacketDestructor (Packet *p)
	Cleanup a packet so that we can free it. No memset needed.. More...

Macro Definition Documentation

CLEAR_ADDR

#define CLEAR_ADDR

(

a

)

Value:

    do {                                                                                           \
        (a)->family = 0;                                                                           \
        (a)->addr_data32[0] = 0;                                                                   \
        (a)->addr_data32[1] = 0;                                                                   \
        (a)->addr_data32[2] = 0;                                                                   \
        (a)->addr_data32[3] = 0;                                                                   \
    } while (0)

PACKET_RESET_ACTION

#define PACKET_RESET_ACTION

(

p

)

(p)->action = 0

RESET_PKT_LEN

#define RESET_PKT_LEN

(

p

)

((p)->pktlen = 0)

Function Documentation

PacketCheckAction()

bool PacketCheckAction	(	const Packet *	p,
		const uint8_t	a
	)

Definition at line 49 of file packet.c.

References Packet_::action, likely, and Packet_::root.

Referenced by AlertJsonHeader(), CaptureStatsUpdate(), EveAddVerdict(), RejectSendIPv4ICMP(), RejectSendIPv4TCP(), RejectSendIPv6ICMP(), and RejectSendIPv6TCP().

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PacketDestructor()

void PacketDestructor

(

Packet *

p

)

Cleanup a packet so that we can free it. No memset needed..

Definition at line 152 of file packet.c.

References PacketAlerts_::alerts, Packet_::alerts, Packet_::app_layer_events, AppLayerDecoderEventsFreeEvents(), PACKET_FREE_EXTDATA, PACKET_PROFILING_RESET, PacketAlertFree(), PacketReleaseRefs(), Packet_::persistent, Packet_::pktvar, PktVarFree(), SCSpinDestroy, and Packet_::tunnel_lock.

Referenced by PacketFree().

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PacketDrop()

void PacketDrop	(	Packet *	p,
		const uint8_t	action,
		enum PacketDropReason	r
	)

issue drop action

Set drop (+reject) flags in both current and root packet.

Parameters

action

action bit flags. Must be limited to ACTION_DROP_REJECT|ACTION_ALERT

Definition at line 33 of file packet.c.

References Packet_::action, ACTION_ALERT, ACTION_DROP_REJECT, DEBUG_VALIDATE_BUG_ON, Packet_::drop_reason, PKT_DROP_REASON_INNER_PACKET, PKT_DROP_REASON_NOT_SET, and Packet_::root.

PacketInit()

void PacketInit

(

Packet *

p

)

Initialize a packet structure for use.

Definition at line 63 of file packet.c.

References PacketAlerts_::alerts, Packet_::alerts, Packet_::livedev, PacketAlertCreate(), Packet_::persistent, SCSpinInit, and Packet_::tunnel_lock.

Referenced by PacketGetFromAlloc().

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PacketRecycle()

void PacketRecycle

(

Packet *

p

)

Definition at line 143 of file packet.c.

References PacketReinit(), and PacketReleaseRefs().

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PacketReinit()

void PacketReinit

(

Packet *

p

)

Recycle a packet structure for reuse.

Definition at line 80 of file packet.c.

References Packet_::app_update_direction, CLEAR_ADDR, Packet_::datalink, Packet_::dp, Packet_::drop_reason, Packet_::dst, Packet_::flags, Packet_::flowflags, PACKET_FREE_EXTDATA, PACKET_RESET_ACTION, PacketTunnelNone, Packet_::pkt_src, Packet_::pktvar, PktVarFree(), Packet_::proto, Packet_::recursion_level, SCTIME_INIT, Packet_::sp, Packet_::src, Packet_::ts, Packet_::ttype, Packet_::vlan_id, and Packet_::vlan_idx.

Referenced by PacketRecycle().

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PacketReleaseRefs()

void PacketReleaseRefs

(

Packet *

p

)

Definition at line 70 of file packet.c.

Referenced by PacketDestructor(), and PacketRecycle().

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