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# Traffic control configuration.
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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
URL 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_CSZ
tristate "CSZ packet scheduler"
depends on NET_SCHED
---help---
Say Y here if you want to use the Clark-Shenker-Zhang (CSZ) packet
scheduling algorithm for some of your network devices. At the
moment, this is the only algorithm that can guarantee service for
real-time applications (see the top of <file:net/sched/sch_csz.c>
for details and references about the algorithm).
Note: this scheduler is currently broken.
To compile this code as a module, choose M here: the
module will be called sch_csz.
#tristate ' H-PFQ packet scheduler' CONFIG_NET_SCH_HPFQ
#tristate ' H-FSC packet scheduler' CONFIG_NET_SCH_HFCS
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_INGRESS
tristate "Ingress Qdisc"
depends on NET_SCHED && NETFILTER
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 cls_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
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
depends on NET_CLS_ROUTE4
default y
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 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_POLICE
bool "Traffic policing (needed for in/egress)"
depends on NET_CLS && NET_QOS
help
Say Y to support traffic policing (bandwidth limits). Needed for
ingress and egress rate limiting.