ns3::Ipv4L3Protocol Class Reference

Implement the Ipv4 layer. More...

#include <ipv4-l3-protocol.h>

Inheritance diagram for ns3::Ipv4L3Protocol:

Collaboration diagram for ns3::Ipv4L3Protocol:

List of all members.

Public Member Functions
void	SetDefaultTtl (uint8_t ttl)
Ptr< Ipv4Interface >	FindInterfaceForDevice (Ptr< const NetDevice > device)
void	Receive (Ptr< NetDevice > device, Ptr< Packet > p, uint16_t protocol, const Address &from)
void	Send (Ptr< Packet > packet, Ipv4Address source, Ipv4Address destination, uint8_t protocol)
Static Public Member Functions
static TypeId	GetTypeId (void)
	This method returns the TypeId associated to ns3::Ipv4L3Protocol.
Protected Member Functions
virtual void	DoDispose (void)

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Detailed Description

Implement the Ipv4 layer.

This is the actual implementation of IP. It contains APIs to send and receive packets at the IP layer, as well as APIs for IP routing.

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Member Function Documentation

virtual void ns3::Ipv4L3Protocol::DoDispose

(

void

)

[protected, virtual]

This method is called by Object::Dispose or by the object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e., for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose method.

Reimplemented from ns3::Object.

Ptr<Ipv4Interface> ns3::Ipv4L3Protocol::FindInterfaceForDevice

(

Ptr< const NetDevice >

device

)

Parameters:

device

the device to match

Returns:

the matching interface, zero if not found.

Try to find an Ipv4Interface whose NetDevice is equal to the input NetDevice.

static TypeId ns3::Ipv4L3Protocol::GetTypeId

(

void

)

[static]

This method returns the TypeId associated to ns3::Ipv4L3Protocol.

This object is accessible through the following paths with Config::Set and Config::Connect:

• /NodeList/[i]/$ns3Ipv4L3Protocol

Attributes defined for this type:

• DefaultTtl: The TTL value set by default on all outgoing packets generated on this node.
  • Set with class: ns3::UintegerValue
  • Underlying type: uint8_t 0:255
  • Initial value: 64
  • Flags: construct write read
• CalcChecksum: If true, we calculate the checksum of outgoing packets and verify the checksum of incoming packets.
  • Set with class: BooleanValue
  • Underlying type: bool
  • Initial value: false
  • Flags: construct write read
• InterfaceList: The set of Ipv4 interfaces associated to this Ipv4 stack.
  • Set with class: ns3::ObjectVectorValue
  • Underlying type: ns3::Ptr< ns3::Ipv4Interface >
  • Flags: read

TraceSources defined for this type:

• Tx: Send ipv4 packet to outgoing interface.
• Rx: Receive ipv4 packet from incoming interface.
• Drop: Drop ipv4 packet

Reimplemented from ns3::Object.

void ns3::Ipv4L3Protocol::Receive	(	Ptr< NetDevice >	device,
		Ptr< Packet >	p,
		uint16_t	protocol,
		const Address &	from
	)

Lower layer calls this method after calling L3Demux::Lookup The ARP subclass needs to know from which NetDevice this packet is coming to:

• implement a per-NetDevice ARP cache
• send back arp replies on the right device

void ns3::Ipv4L3Protocol::Send	(	Ptr< Packet >	packet,
		Ipv4Address	source,
		Ipv4Address	destination,
		uint8_t	protocol
	)

Parameters:

	packet	packet to send
	source	source address of packet
	destination	address of packet
	protocol	number of packet

Higher-level layers call this method to send a packet down the stack to the MAC and PHY layers.

void ns3::Ipv4L3Protocol::SetDefaultTtl

(

uint8_t

ttl

)

Parameters:

ttl

default ttl to use

When we need to send an ipv4 packet, we use this default ttl value.

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The documentation for this class was generated from the following files:

• src/internet-stack/ipv4-l3-protocol.h
• doc/introspected-doxygen.h