PfifoFastIpv4PacketFilter is the filter to be added to the PfifoFast queue disc to simulate the behavior of the pfifo_fast Linux queue disc. More...

#include "ipv4-packet-filter.h"

Inheritance diagram for ns3::PfifoFastIpv4PacketFilter:

Collaboration diagram for ns3::PfifoFastIpv4PacketFilter:

Public Types
enum	Ipv4TrafficClassMode { PF_MODE_TOS, PF_MODE_DSCP }
	Enumeration of modes of Ipv4 header traffic class semantics. More...

Public Member Functions
	PfifoFastIpv4PacketFilter ()

virtual	~PfifoFastIpv4PacketFilter ()

Public Member Functions inherited from ns3::Ipv4PacketFilter
	Ipv4PacketFilter ()

virtual	~Ipv4PacketFilter ()

Public Member Functions inherited from ns3::PacketFilter
	PacketFilter ()

virtual	~PacketFilter ()

int32_t	Classify (Ptr< QueueDiscItem > item) const

Public Member Functions inherited from ns3::Object
	Object ()
	Constructor. More...

virtual	~Object ()
	Destructor. More...

void	AggregateObject (Ptr< Object > other)
	Aggregate two Objects together. More...

void	Dispose (void)
	Dispose of this Object. More...

AggregateIterator	GetAggregateIterator (void) const
	Get an iterator to the Objects aggregated to this one. More...

virtual TypeId	GetInstanceTypeId (void) const
	Implement the GetInstanceTypeId method defined in ObjectBase. More...

template<typename T >
Ptr< T >	GetObject (void) const
	Get a pointer to the requested aggregated Object. More...

template<typename T >
Ptr< T >	GetObject (TypeId tid) const
	Get a pointer to the requested aggregated Object by TypeId. More...

void	Initialize (void)
	Invoke DoInitialize on all Objects aggregated to this one. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...

void	GetAttribute (std::string name, AttributeValue &value) const
	Get the value of an attribute, raising fatal errors if unsuccessful. More...

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising erros. More...

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful. More...

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors. More...

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context. More...

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context. More...

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context. More...

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context. More...

Static Public Member Functions
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Ipv4PacketFilter
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::PacketFilter
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...

Private Member Functions
virtual int32_t	DoClassify (Ptr< QueueDiscItem > item) const

uint32_t	DscpToBand (Ipv4Header::DscpType dscpType) const

uint32_t	TosToBand (uint8_t tos) const

Private Attributes
Ipv4TrafficClassMode	m_trafficClassMode
	traffic class mode More...

Additional Inherited Members
Static Public Attributes inherited from ns3::PacketFilter
static const int	PF_NO_MATCH = -1

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
	Copy an Object. More...

virtual void	DoDispose (void)
	Destructor implementation. More...

virtual void	DoInitialize (void)
	Initialize() implementation. More...

virtual void	NotifyNewAggregate (void)
	Notify all Objects aggregated to this one of a new Object being aggregated. More...

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes. More...

virtual void	NotifyConstructionCompleted (void)
	Notifier called once the ObjectBase is fully constructed. More...

Related Functions inherited from ns3::ObjectBase
static TypeId	GetObjectIid (void)
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. More...

Detailed Description

PfifoFastIpv4PacketFilter is the filter to be added to the PfifoFast queue disc to simulate the behavior of the pfifo_fast Linux queue disc.

Introspection did not find any typical Config paths.

Two modes of operation are provided. In PF_MODE_TOS mode, packets are classified based on the TOS byte (originally defined by RFC 1349: http://www.ietf.org/rfc/rfc1349.txt)

          0     1     2     3     4     5     6     7
      +-----+-----+-----+-----+-----+-----+-----+-----+
      |   PRECEDENCE    |          TOS          | MBZ |
      +-----+-----+-----+-----+-----+-----+-----+-----+

where MBZ stands for 'must be zero'.

In the eight-bit legacy TOS byte, there were five lower bits for TOS and three upper bits for Precedence. Bit 7 was never used. Bits 6-7 are now repurposed for ECN. The below TOS values correspond to bits 3-7 in the TOS byte (i.e. including MBZ), omitting the precedence bits 0-2.

TOS	Bits	Means	Linux Priority	Band
0x0	0	Normal Service	0 Best Effort	1
0x2	1	Minimize Monetary Cost	1 Filler	2
0x4	2	Maximize Reliability	0 Best Effort	1
0x6	3	mmc+mr	0 Best Effort	1
0x8	4	Maximize Throughput	2 Bulk	2
0xa	5	mmc+mt	2 Bulk	2
0xc	6	mr+mt	2 Bulk	2
0xe	7	mmc+mr+mt	2 Bulk	2
0x10	8	Minimize Delay	6 Interactive	0
0x12	9	mmc+md	6 Interactive	0
0x14	10	mr+md	6 Interactive	0
0x16	11	mmc+mr+md	6 Interactive	0
0x18	12	mt+md	4 Int. Bulk	1
0x1a	13	mmc+mt+md	4 Int. Bulk	1
0x1c	14	mr+mt+md	4 Int. Bulk	1
0x1e	15	mmc+mr+mt+md	4 Int. Bulk	1

In PF_MODE_TOS, the above values are used to map packets into bands, and IP precedence bits are disregarded.

In PF_MODE_DSCP (the default), the following mappings are used.

For DSCP, the following values are recommended for Linux in a patch to the netdev mailing list from Jesper Dangaard Brouer broue.nosp@m.r@re.nosp@m.dhat..nosp@m.com on 15 Sept 2014. CS* values I made up myself.

DSCP	Hex	Means	Linux Priority	Band
EF	0x2E	TC_PRIO_INTERACTIVE_BULK=4	4 Int. Bulk	1
AF11	0x0A	TC_PRIO_BULK=2	2 Bulk	2
AF21	0x12	TC_PRIO_BULK=2	2 Bulk	2
AF31	0x1A	TC_PRIO_BULK=2	2 Bulk	2
AF41	0x22	TC_PRIO_BULK=2	2 Bulk	2
AF12	0x0C	TC_PRIO_INTERACTIVE=6	6 Interactive	0
AF22	0x14	TC_PRIO_INTERACTIVE=6	6 Interactive	0
AF32	0x1C	TC_PRIO_INTERACTIVE=6	6 Interactive	0
AF42	0x34	TC_PRIO_INTERACTIVE=6	6 Interactive	0
AF13	0x0E	TC_PRIO_INTERACTIVE_BULK=4	4 Int. Bulk	1
AF23	0x16	TC_PRIO_INTERACTIVE_BULK=4	4 Int. Bulk	1
AF33	0x1E	TC_PRIO_INTERACTIVE_BULK=4	4 Int. Bulk	1
AF43	0x26	TC_PRIO_INTERACTIVE_BULK=4	4 Int. Bulk	1
CS0	0x00	TC_PRIO_BESTEFFORT	0 Best Effort	1
CS1	0x20	TC_PRIO_FILLER	1 Filler	2
CS2	0x40	TC_PRIO_BULK	2 Bulk	1
CS3	0x60	TC_PRIO_INTERACTIVE_BULK	4 Int. Bulk	1
CS4	0x80	TC_PRIO_INTERACTIVE	6 Interactive	0
CS5	0xA0	TC_PRIO_INTERACTIVE	6 Interactive	0
CS6	0xC0	TC_PRIO_INTERACTIVE	6 Interactive	0
CS7	0xE0	TC_PRIO_CONTROL	8 Control	0

Attributes

Mode: Whether to interpret the TOS byte as legacy TOS or DSCP
- Set with class: ns3::EnumValue
- Underlying type:
- Initial value: DSCP semantics
- Flags: construct write read

No TraceSources are defined for this type.
Size of this type is 32 bytes (on a 64-bit architecture).

Definition at line 129 of file ipv4-packet-filter.h.