net/sched/Kconfig - third_party/linux - Git at Google


            
            #

            
            # Traffic control configuration.

            
            #

            
            choice

            
            	prompt "Packet scheduler clock source"

            
            	depends on NET_SCHED

            
            	default NET_SCH_CLK_JIFFIES

            
            	help

            
            	  Packet schedulers need a monotonic clock that increments at a static

            
            	  rate. The kernel provides several suitable interfaces, each with

            
            	  different properties:


            	  - high resolution (us or better)

            
            	  - fast to read (minimal locking, no i/o access)

            
            	  - synchronized on all processors

            
            	  - handles cpu clock frequency changes


            	  but nothing provides all of the above.


            config NET_SCH_CLK_JIFFIES

            
            	bool "Timer interrupt"

            
            	help

            
            	  Say Y here if you want to use the timer interrupt (jiffies) as clock

            
            	  source. This clock source is fast, synchronized on all processors and

            
            	  handles cpu clock frequency changes, but its resolution is too low

            
            	  for accurate shaping except at very low speed.


            config NET_SCH_CLK_GETTIMEOFDAY

            
            	bool "gettimeofday"

            
            	help

            
            	  Say Y here if you want to use gettimeofday as clock source. This clock

            
            	  source has high resolution, is synchronized on all processors and

            
            	  handles cpu clock frequency changes, but it is slow.


            	  Choose this if you need a high resolution clock source but can't use

            
            	  the CPU's cycle counter.


            config NET_SCH_CLK_CPU

            
            	bool "CPU cycle counter"

            
            	depends on X86_TSC || X86_64 || ALPHA || SPARC64 || PPC64 || IA64

            
            	help

            
            	  Say Y here if you want to use the CPU's cycle counter as clock source.

            
            	  This is a cheap and high resolution clock source, but on some

            
            	  architectures it is not synchronized on all processors and doesn't

            
            	  handle cpu clock frequency changes.


            	  The useable cycle counters are:


            	  	x86/x86_64	- Timestamp Counter

            
            		alpha		- Cycle Counter

            
            		sparc64		- %ticks register

            
            		ppc64		- Time base

            
            		ia64		- Interval Time Counter


            	  Choose this if your CPU's cycle counter is working properly.


            endchoice


            config NET_SCH_CBQ

            
            	tristate "CBQ packet scheduler"

            
            	depends on NET_SCHED

            
            	---help---

            
            	  Say Y here if you want to use the Class-Based Queueing (CBQ) packet

            
            	  scheduling algorithm for some of your network devices.  This

            
            	  algorithm classifies the waiting packets into a tree-like hierarchy

            
            	  of classes; the leaves of this tree are in turn scheduled by

            
            	  separate algorithms (called "disciplines" in this context).


            	  See the top of <file:net/sched/sch_cbq.c> for references about the

            
            	  CBQ algorithm.


            	  CBQ is a commonly used scheduler, so if you're unsure, you should

            
            	  say Y here. Then say Y to all the queueing algorithms below that you

            
            	  want to use as CBQ disciplines.  Then say Y to "Packet classifier

            
            	  API" and say Y to all the classifiers you want to use; a classifier

            
            	  is a routine that allows you to sort your outgoing traffic into

            
            	  classes based on a certain criterion.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_cbq.


            config NET_SCH_HTB

            
            	tristate "HTB packet scheduler"

            
            	depends on NET_SCHED

            
            	---help---

            
            	  Say Y here if you want to use the Hierarchical Token Buckets (HTB)

            
            	  packet scheduling algorithm for some of your network devices. See

            
            	  <http://luxik.cdi.cz/~devik/qos/htb/> for complete manual and

            
            	  in-depth articles.


            	  HTB is very similar to the CBQ regarding its goals however is has

            
            	  different properties and different algorithm.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_htb.


            config NET_SCH_HFSC

            
            	tristate "HFSC packet scheduler"

            
            	depends on NET_SCHED

            
            	---help---

            
            	  Say Y here if you want to use the Hierarchical Fair Service Curve

            
            	  (HFSC) packet scheduling algorithm for some of your network devices.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_hfsc.


            #tristate '  H-PFQ packet scheduler' CONFIG_NET_SCH_HPFQ

            
            config NET_SCH_ATM

            
            	tristate "ATM pseudo-scheduler"

            
            	depends on NET_SCHED && ATM

            
            	---help---

            
            	  Say Y here if you want to use the ATM pseudo-scheduler.  This

            
            	  provides a framework for invoking classifiers (aka "filters"), which

            
            	  in turn select classes of this queuing discipline.  Each class maps

            
            	  the flow(s) it is handling to a given virtual circuit (see the top of

            
            	  <file:net/sched/sch_atm.c>).


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_atm.


            config NET_SCH_PRIO

            
            	tristate "The simplest PRIO pseudoscheduler"

            
            	depends on NET_SCHED

            
            	help

            
            	  Say Y here if you want to use an n-band priority queue packet

            
            	  "scheduler" for some of your network devices or as a leaf discipline

            
            	  for the CBQ scheduling algorithm. If unsure, say Y.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_prio.


            config NET_SCH_RED

            
            	tristate "RED queue"

            
            	depends on NET_SCHED

            
            	help

            
            	  Say Y here if you want to use the Random Early Detection (RED)

            
            	  packet scheduling algorithm for some of your network devices (see

            
            	  the top of <file:net/sched/sch_red.c> for details and references

            
            	  about the algorithm).


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_red.


            config NET_SCH_SFQ

            
            	tristate "SFQ queue"

            
            	depends on NET_SCHED

            
            	---help---

            
            	  Say Y here if you want to use the Stochastic Fairness Queueing (SFQ)

            
            	  packet scheduling algorithm for some of your network devices or as a

            
            	  leaf discipline for the CBQ scheduling algorithm (see the top of

            
            	  <file:net/sched/sch_sfq.c> for details and references about the SFQ

            
            	  algorithm).


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_sfq.


            config NET_SCH_TEQL

            
            	tristate "TEQL queue"

            
            	depends on NET_SCHED

            
            	---help---

            
            	  Say Y here if you want to use the True Link Equalizer (TLE) packet

            
            	  scheduling algorithm for some of your network devices or as a leaf

            
            	  discipline for the CBQ scheduling algorithm. This queueing

            
            	  discipline allows the combination of several physical devices into

            
            	  one virtual device. (see the top of <file:net/sched/sch_teql.c> for

            
            	  details).


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_teql.


            config NET_SCH_TBF

            
            	tristate "TBF queue"

            
            	depends on NET_SCHED

            
            	help

            
            	  Say Y here if you want to use the Simple Token Bucket Filter (TBF)

            
            	  packet scheduling algorithm for some of your network devices or as a

            
            	  leaf discipline for the CBQ scheduling algorithm (see the top of

            
            	  <file:net/sched/sch_tbf.c> for a description of the TBF algorithm).


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_tbf.


            config NET_SCH_GRED

            
            	tristate "GRED queue"

            
            	depends on NET_SCHED

            
            	help

            
            	  Say Y here if you want to use the Generic Random Early Detection

            
            	  (RED) packet scheduling algorithm for some of your network devices

            
            	  (see the top of <file:net/sched/sch_red.c> for details and

            
            	  references about the algorithm).


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_gred.


            config NET_SCH_DSMARK

            
            	tristate "Diffserv field marker"

            
            	depends on NET_SCHED

            
            	help

            
            	  Say Y if you want to schedule packets according to the

            
            	  Differentiated Services architecture proposed in RFC 2475.

            
            	  Technical information on this method, with pointers to associated

            
            	  RFCs, is available at <http://www.gta.ufrj.br/diffserv/>.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_dsmark.


            config NET_SCH_NETEM

            
            	tristate "Network emulator"

            
            	depends on NET_SCHED

            
            	help

            
            	  Say Y if you want to emulate network delay, loss, and packet

            
            	  re-ordering. This is often useful to simulate networks when

            
            	  testing applications or protocols.


            	  To compile this driver as a module, choose M here: the module

            
            	  will be called sch_netem.


            	  If unsure, say N.


            config NET_SCH_INGRESS

            
            	tristate "Ingress Qdisc"

            
            	depends on NET_SCHED

            
            	help

            
            	  If you say Y here, you will be able to police incoming bandwidth

            
            	  and drop packets when this bandwidth exceeds your desired rate.

            
            	  If unsure, say Y.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called sch_ingress.


            config NET_QOS

            
            	bool "QoS support"

            
            	depends on NET_SCHED

            
            	---help---

            
            	  Say Y here if you want to include Quality Of Service scheduling

            
            	  features, which means that you will be able to request certain

            
            	  rate-of-flow limits for your network devices.


            	  This Quality of Service (QoS) support will enable you to use

            
            	  Differentiated Services (diffserv) and Resource Reservation Protocol

            
            	  (RSVP) on your Linux router if you also say Y to "Packet classifier

            
            	  API" and to some classifiers below. Documentation and software is at

            
            	  <http://diffserv.sourceforge.net/>.


            	  Note that the answer to this question won't directly affect the

            
            	  kernel: saying N will just cause the configurator to skip all

            
            	  the questions about QoS support.


            config NET_ESTIMATOR

            
            	bool "Rate estimator"

            
            	depends on NET_QOS

            
            	help

            
            	  In order for Quality of Service scheduling to work, the current

            
            	  rate-of-flow for a network device has to be estimated; if you say Y

            
            	  here, the kernel will do just that.


            config NET_CLS

            
            	bool "Packet classifier API"

            
            	depends on NET_SCHED

            
            	---help---

            
            	  The CBQ scheduling algorithm requires that network packets which are

            
            	  scheduled to be sent out over a network device be classified

            
            	  according to some criterion. If you say Y here, you will get a

            
            	  choice of several different packet classifiers with the following

            
            	  questions.


            	  This will enable you to use Differentiated Services (diffserv) and

            
            	  Resource Reservation Protocol (RSVP) on your Linux router.

            
            	  Documentation and software is at

            
            	  <http://diffserv.sourceforge.net/>.


            config NET_CLS_TCINDEX

            
            	tristate "TC index classifier"

            
            	depends on NET_CLS

            
            	help

            
            	  If you say Y here, you will be able to classify outgoing packets

            
            	  according to the tc_index field of the skb. You will want this

            
            	  feature if you want to implement Differentiated Services using

            
            	  sch_dsmark. If unsure, say Y.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called cls_tcindex.


            config NET_CLS_ROUTE4

            
            	tristate "Routing table based classifier"

            
            	depends on NET_CLS

            
            	select NET_CLS_ROUTE

            
            	help

            
            	  If you say Y here, you will be able to classify outgoing packets

            
            	  according to the route table entry they matched. If unsure, say Y.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called cls_route.


            config NET_CLS_ROUTE

            
            	bool

            
            	default n


            config NET_CLS_FW

            
            	tristate "Firewall based classifier"

            
            	depends on NET_CLS

            
            	help

            
            	  If you say Y here, you will be able to classify outgoing packets

            
            	  according to firewall criteria you specified.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called cls_fw.


            config NET_CLS_U32

            
            	tristate "U32 classifier"

            
            	depends on NET_CLS

            
            	help

            
            	  If you say Y here, you will be able to classify outgoing packets

            
            	  according to their destination address. If unsure, say Y.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called cls_u32.


            config CLS_U32_PERF

            
            	bool "U32 classifier performance counters"

            
            	depends on NET_CLS_U32

            
            	help

            
            	  gathers stats that could be used to tune u32 classifier performance.

            
            	  Requires a new iproute2

            
            	  You MUST NOT turn this on if you dont have an update iproute2.


            config NET_CLS_IND

            
            	bool "classify input device (slows things u32/fw) "

            
            	depends on NET_CLS_U32 || NET_CLS_FW

            
            	help

            
            	  This option will be killed eventually when a

            
                      metadata action appears because it slows things a little

            
                      Available only for u32 and fw classifiers.

            
            	  Requires a new iproute2

            
            	  You MUST NOT turn this on if you dont have an update iproute2.


            config CLS_U32_MARK

            
            	bool "Use nfmark as a key in U32 classifier"

            
            	depends on NET_CLS_U32 && NETFILTER

            
            	help

            
            	  This allows you to match mark in a u32 filter.

            
            	  Example:

            
            	  tc filter add dev eth0 protocol ip parent 1:0 prio 5 u32 \

            
            		match mark 0x0090 0xffff \

            
            		match ip dst 4.4.4.4 \

            
            		flowid 1:90

            
            	  You must use a new iproute2 to use this feature.


            config NET_CLS_RSVP

            
            	tristate "Special RSVP classifier"

            
            	depends on NET_CLS && NET_QOS

            
            	---help---

            
            	  The Resource Reservation Protocol (RSVP) permits end systems to

            
            	  request a minimum and maximum data flow rate for a connection; this

            
            	  is important for real time data such as streaming sound or video.


            	  Say Y here if you want to be able to classify outgoing packets based

            
            	  on their RSVP requests.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called cls_rsvp.


            config NET_CLS_RSVP6

            
            	tristate "Special RSVP classifier for IPv6"

            
            	depends on NET_CLS && NET_QOS

            
            	---help---

            
            	  The Resource Reservation Protocol (RSVP) permits end systems to

            
            	  request a minimum and maximum data flow rate for a connection; this

            
            	  is important for real time data such as streaming sound or video.


            	  Say Y here if you want to be able to classify outgoing packets based

            
            	  on their RSVP requests and you are using the new Internet Protocol

            
            	  IPv6 as opposed to the older and more common IPv4.


            	  To compile this code as a module, choose M here: the

            
            	  module will be called cls_rsvp6.


            config NET_CLS_ACT

            
            	bool "Packet ACTION"

            
            	depends on EXPERIMENTAL && NET_CLS && NET_QOS

            
            	---help---

            
            	This option requires you have a new iproute2. It enables

            
            	tc extensions which can be used with tc classifiers.

            
            	  You MUST NOT turn this on if you dont have an update iproute2.


            config NET_ACT_POLICE

            
            	tristate "Policing Actions"

            
                    depends on NET_CLS_ACT

            
                    ---help---

            
                    If you are using a newer iproute2 select this one, otherwise use one

            
            	below to select a policer.

            
            	  You MUST NOT turn this on if you dont have an update iproute2.


            config NET_ACT_GACT

            
                    tristate "generic Actions"

            
                    depends on NET_CLS_ACT

            
                    ---help---

            
                    You must have new iproute2 to use this feature.

            
                    This adds simple filtering actions like drop, accept etc.


            config GACT_PROB

            
                    bool "generic Actions probability"

            
                    depends on NET_ACT_GACT

            
                    ---help---

            
                    Allows generic actions to be randomly or deterministically used.


            config NET_ACT_MIRRED

            
                    tristate "Packet In/Egress redirecton/mirror Actions"

            
                    depends on NET_CLS_ACT

            
                    ---help---

            
                    requires new iproute2

            
                    This allows packets to be mirrored or redirected to netdevices


            config NET_ACT_IPT

            
                    tristate "iptables Actions"

            
                    depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES

            
                    ---help---

            
                    requires new iproute2

            
                    This allows iptables targets to be used by tc filters


            config NET_ACT_PEDIT

            
                    tristate "Generic Packet Editor Actions"

            
                    depends on NET_CLS_ACT

            
                    ---help---

            
                    requires new iproute2

            
                    This allows for packets to be generically edited


            config NET_CLS_POLICE

            
            	bool "Traffic policing (needed for in/egress)"

            
            	depends on NET_CLS && NET_QOS && NET_CLS_ACT!=y

            
            	help

            
            	  Say Y to support traffic policing (bandwidth limits).  Needed for

            
            	  ingress and egress rate limiting.
	#
	# Traffic control configuration.
	#
	choice
	prompt "Packet scheduler clock source"
	depends on NET_SCHED
	default NET_SCH_CLK_JIFFIES
	help
	Packet schedulers need a monotonic clock that increments at a static
	rate. The kernel provides several suitable interfaces, each with
	different properties:

	- high resolution (us or better)
	- fast to read (minimal locking, no i/o access)
	- synchronized on all processors
	- handles cpu clock frequency changes

	but nothing provides all of the above.

	config NET_SCH_CLK_JIFFIES
	bool "Timer interrupt"
	help
	Say Y here if you want to use the timer interrupt (jiffies) as clock
	source. This clock source is fast, synchronized on all processors and
	handles cpu clock frequency changes, but its resolution is too low
	for accurate shaping except at very low speed.

	config NET_SCH_CLK_GETTIMEOFDAY
	bool "gettimeofday"
	help
	Say Y here if you want to use gettimeofday as clock source. This clock
	source has high resolution, is synchronized on all processors and
	handles cpu clock frequency changes, but it is slow.

	Choose this if you need a high resolution clock source but can't use
	the CPU's cycle counter.

	config NET_SCH_CLK_CPU
	bool "CPU cycle counter"
	depends on X86_TSC \|\| X86_64 \|\| ALPHA \|\| SPARC64 \|\| PPC64 \|\| IA64
	help
	Say Y here if you want to use the CPU's cycle counter as clock source.
	This is a cheap and high resolution clock source, but on some
	architectures it is not synchronized on all processors and doesn't
	handle cpu clock frequency changes.

	The useable cycle counters are:

	x86/x86_64 - Timestamp Counter
	alpha - Cycle Counter
	sparc64 - %ticks register
	ppc64 - Time base
	ia64 - Interval Time Counter

	Choose this if your CPU's cycle counter is working properly.

	endchoice

	config NET_SCH_CBQ
	tristate "CBQ packet scheduler"
	depends on NET_SCHED
	---help---
	Say Y here if you want to use the Class-Based Queueing (CBQ) packet
	scheduling algorithm for some of your network devices. This
	algorithm classifies the waiting packets into a tree-like hierarchy
	of classes; the leaves of this tree are in turn scheduled by
	separate algorithms (called "disciplines" in this context).

	See the top of <file:net/sched/sch_cbq.c> for references about the
	CBQ algorithm.

	CBQ is a commonly used scheduler, so if you're unsure, you should
	say Y here. Then say Y to all the queueing algorithms below that you
	want to use as CBQ disciplines. Then say Y to "Packet classifier
	API" and say Y to all the classifiers you want to use; a classifier
	is a routine that allows you to sort your outgoing traffic into
	classes based on a certain criterion.

	To compile this code as a module, choose M here: the
	module will be called sch_cbq.

	config NET_SCH_HTB
	tristate "HTB packet scheduler"
	depends on NET_SCHED
	---help---
	Say Y here if you want to use the Hierarchical Token Buckets (HTB)
	packet scheduling algorithm for some of your network devices. See
	<http://luxik.cdi.cz/~devik/qos/htb/> for complete manual and
	in-depth articles.

	HTB is very similar to the CBQ regarding its goals however is has
	different properties and different algorithm.

	To compile this code as a module, choose M here: the
	module will be called sch_htb.

	config NET_SCH_HFSC
	tristate "HFSC packet scheduler"
	depends on NET_SCHED
	---help---
	Say Y here if you want to use the Hierarchical Fair Service Curve
	(HFSC) packet scheduling algorithm for some of your network devices.

	To compile this code as a module, choose M here: the
	module will be called sch_hfsc.

	#tristate ' H-PFQ packet scheduler' CONFIG_NET_SCH_HPFQ
	config NET_SCH_ATM
	tristate "ATM pseudo-scheduler"
	depends on NET_SCHED && ATM
	---help---
	Say Y here if you want to use the ATM pseudo-scheduler. This
	provides a framework for invoking classifiers (aka "filters"), which
	in turn select classes of this queuing discipline. Each class maps
	the flow(s) it is handling to a given virtual circuit (see the top of
	<file:net/sched/sch_atm.c>).

	To compile this code as a module, choose M here: the
	module will be called sch_atm.

	config NET_SCH_PRIO
	tristate "The simplest PRIO pseudoscheduler"
	depends on NET_SCHED
	help
	Say Y here if you want to use an n-band priority queue packet
	"scheduler" for some of your network devices or as a leaf discipline
	for the CBQ scheduling algorithm. If unsure, say Y.

	To compile this code as a module, choose M here: the
	module will be called sch_prio.

	config NET_SCH_RED
	tristate "RED queue"
	depends on NET_SCHED
	help
	Say Y here if you want to use the Random Early Detection (RED)
	packet scheduling algorithm for some of your network devices (see
	the top of <file:net/sched/sch_red.c> for details and references
	about the algorithm).

	To compile this code as a module, choose M here: the
	module will be called sch_red.

	config NET_SCH_SFQ
	tristate "SFQ queue"
	depends on NET_SCHED
	---help---
	Say Y here if you want to use the Stochastic Fairness Queueing (SFQ)
	packet scheduling algorithm for some of your network devices or as a
	leaf discipline for the CBQ scheduling algorithm (see the top of
	<file:net/sched/sch_sfq.c> for details and references about the SFQ
	algorithm).

	To compile this code as a module, choose M here: the
	module will be called sch_sfq.

	config NET_SCH_TEQL
	tristate "TEQL queue"
	depends on NET_SCHED
	---help---
	Say Y here if you want to use the True Link Equalizer (TLE) packet
	scheduling algorithm for some of your network devices or as a leaf
	discipline for the CBQ scheduling algorithm. This queueing
	discipline allows the combination of several physical devices into
	one virtual device. (see the top of <file:net/sched/sch_teql.c> for
	details).

	To compile this code as a module, choose M here: the
	module will be called sch_teql.

	config NET_SCH_TBF
	tristate "TBF queue"
	depends on NET_SCHED
	help
	Say Y here if you want to use the Simple Token Bucket Filter (TBF)
	packet scheduling algorithm for some of your network devices or as a
	leaf discipline for the CBQ scheduling algorithm (see the top of
	<file:net/sched/sch_tbf.c> for a description of the TBF algorithm).

	To compile this code as a module, choose M here: the
	module will be called sch_tbf.

	config NET_SCH_GRED
	tristate "GRED queue"
	depends on NET_SCHED
	help
	Say Y here if you want to use the Generic Random Early Detection
	(RED) packet scheduling algorithm for some of your network devices
	(see the top of <file:net/sched/sch_red.c> for details and
	references about the algorithm).

	To compile this code as a module, choose M here: the
	module will be called sch_gred.

	config NET_SCH_DSMARK
	tristate "Diffserv field marker"
	depends on NET_SCHED
	help
	Say Y if you want to schedule packets according to the
	Differentiated Services architecture proposed in RFC 2475.
	Technical information on this method, with pointers to associated
	RFCs, is available at <http://www.gta.ufrj.br/diffserv/>.

	To compile this code as a module, choose M here: the
	module will be called sch_dsmark.

	config NET_SCH_NETEM
	tristate "Network emulator"
	depends on NET_SCHED
	help
	Say Y if you want to emulate network delay, loss, and packet
	re-ordering. This is often useful to simulate networks when
	testing applications or protocols.

	To compile this driver as a module, choose M here: the module
	will be called sch_netem.

	If unsure, say N.

	config NET_SCH_INGRESS
	tristate "Ingress Qdisc"
	depends on NET_SCHED
	help
	If you say Y here, you will be able to police incoming bandwidth
	and drop packets when this bandwidth exceeds your desired rate.
	If unsure, say Y.

	To compile this code as a module, choose M here: the
	module will be called sch_ingress.

	config NET_QOS
	bool "QoS support"
	depends on NET_SCHED
	---help---
	Say Y here if you want to include Quality Of Service scheduling
	features, which means that you will be able to request certain
	rate-of-flow limits for your network devices.

	This Quality of Service (QoS) support will enable you to use
	Differentiated Services (diffserv) and Resource Reservation Protocol
	(RSVP) on your Linux router if you also say Y to "Packet classifier
	API" and to some classifiers below. Documentation and software is at
	<http://diffserv.sourceforge.net/>.

	Note that the answer to this question won't directly affect the
	kernel: saying N will just cause the configurator to skip all
	the questions about QoS support.

	config NET_ESTIMATOR
	bool "Rate estimator"
	depends on NET_QOS
	help
	In order for Quality of Service scheduling to work, the current
	rate-of-flow for a network device has to be estimated; if you say Y
	here, the kernel will do just that.

	config NET_CLS
	bool "Packet classifier API"
	depends on NET_SCHED
	---help---
	The CBQ scheduling algorithm requires that network packets which are
	scheduled to be sent out over a network device be classified
	according to some criterion. If you say Y here, you will get a
	choice of several different packet classifiers with the following
	questions.

	This will enable you to use Differentiated Services (diffserv) and
	Resource Reservation Protocol (RSVP) on your Linux router.
	Documentation and software is at
	<http://diffserv.sourceforge.net/>.

	config NET_CLS_TCINDEX
	tristate "TC index classifier"
	depends on NET_CLS
	help
	If you say Y here, you will be able to classify outgoing packets
	according to the tc_index field of the skb. You will want this
	feature if you want to implement Differentiated Services using
	sch_dsmark. If unsure, say Y.

	To compile this code as a module, choose M here: the
	module will be called cls_tcindex.

	config NET_CLS_ROUTE4
	tristate "Routing table based classifier"
	depends on NET_CLS
	select NET_CLS_ROUTE
	help
	If you say Y here, you will be able to classify outgoing packets
	according to the route table entry they matched. If unsure, say Y.

	To compile this code as a module, choose M here: the
	module will be called cls_route.

	config NET_CLS_ROUTE
	bool
	default n

	config NET_CLS_FW
	tristate "Firewall based classifier"
	depends on NET_CLS
	help
	If you say Y here, you will be able to classify outgoing packets
	according to firewall criteria you specified.

	To compile this code as a module, choose M here: the
	module will be called cls_fw.

	config NET_CLS_U32
	tristate "U32 classifier"
	depends on NET_CLS
	help
	If you say Y here, you will be able to classify outgoing packets
	according to their destination address. If unsure, say Y.

	To compile this code as a module, choose M here: the
	module will be called cls_u32.

	config CLS_U32_PERF
	bool "U32 classifier performance counters"
	depends on NET_CLS_U32
	help
	gathers stats that could be used to tune u32 classifier performance.
	Requires a new iproute2
	You MUST NOT turn this on if you dont have an update iproute2.

	config NET_CLS_IND
	bool "classify input device (slows things u32/fw) "
	depends on NET_CLS_U32 \|\| NET_CLS_FW
	help
	This option will be killed eventually when a
	metadata action appears because it slows things a little
	Available only for u32 and fw classifiers.
	Requires a new iproute2
	You MUST NOT turn this on if you dont have an update iproute2.

	config CLS_U32_MARK
	bool "Use nfmark as a key in U32 classifier"
	depends on NET_CLS_U32 && NETFILTER
	help
	This allows you to match mark in a u32 filter.
	Example:
	tc filter add dev eth0 protocol ip parent 1:0 prio 5 u32 \
	match mark 0x0090 0xffff \
	match ip dst 4.4.4.4 \
	flowid 1:90
	You must use a new iproute2 to use this feature.

	config NET_CLS_RSVP
	tristate "Special RSVP classifier"
	depends on NET_CLS && NET_QOS
	---help---
	The Resource Reservation Protocol (RSVP) permits end systems to
	request a minimum and maximum data flow rate for a connection; this
	is important for real time data such as streaming sound or video.

	Say Y here if you want to be able to classify outgoing packets based
	on their RSVP requests.

	To compile this code as a module, choose M here: the
	module will be called cls_rsvp.

	config NET_CLS_RSVP6
	tristate "Special RSVP classifier for IPv6"
	depends on NET_CLS && NET_QOS
	---help---
	The Resource Reservation Protocol (RSVP) permits end systems to
	request a minimum and maximum data flow rate for a connection; this
	is important for real time data such as streaming sound or video.

	Say Y here if you want to be able to classify outgoing packets based
	on their RSVP requests and you are using the new Internet Protocol
	IPv6 as opposed to the older and more common IPv4.

	To compile this code as a module, choose M here: the
	module will be called cls_rsvp6.

	config NET_CLS_ACT
	bool "Packet ACTION"
	depends on EXPERIMENTAL && NET_CLS && NET_QOS
	---help---
	This option requires you have a new iproute2. It enables
	tc extensions which can be used with tc classifiers.
	You MUST NOT turn this on if you dont have an update iproute2.

	config NET_ACT_POLICE
	tristate "Policing Actions"
	depends on NET_CLS_ACT
	---help---
	If you are using a newer iproute2 select this one, otherwise use one
	below to select a policer.
	You MUST NOT turn this on if you dont have an update iproute2.

	config NET_ACT_GACT
	tristate "generic Actions"
	depends on NET_CLS_ACT
	---help---
	You must have new iproute2 to use this feature.
	This adds simple filtering actions like drop, accept etc.

	config GACT_PROB
	bool "generic Actions probability"
	depends on NET_ACT_GACT
	---help---
	Allows generic actions to be randomly or deterministically used.

	config NET_ACT_MIRRED
	tristate "Packet In/Egress redirecton/mirror Actions"
	depends on NET_CLS_ACT
	---help---
	requires new iproute2
	This allows packets to be mirrored or redirected to netdevices

	config NET_ACT_IPT
	tristate "iptables Actions"
	depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES
	---help---
	requires new iproute2
	This allows iptables targets to be used by tc filters

	config NET_ACT_PEDIT
	tristate "Generic Packet Editor Actions"
	depends on NET_CLS_ACT
	---help---
	requires new iproute2
	This allows for packets to be generically edited

	config NET_CLS_POLICE
	bool "Traffic policing (needed for in/egress)"
	depends on NET_CLS && NET_QOS && NET_CLS_ACT!=y
	help
	Say Y to support traffic policing (bandwidth limits). Needed for
	ingress and egress rate limiting.