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Diffstat (limited to 'net/sched/Kconfig')
| -rw-r--r-- | net/sched/Kconfig | 510 |
1 files changed, 510 insertions, 0 deletions
diff --git a/net/sched/Kconfig b/net/sched/Kconfig new file mode 100644 index 0000000..6767e54 --- /dev/null +++ b/net/sched/Kconfig @@ -0,0 +1,510 @@ +# +# Traffic control configuration. +# + +menuconfig NET_SCHED + bool "QoS and/or fair queueing" + select NET_SCH_FIFO + ---help--- + When the kernel has several packets to send out over a network + device, it has to decide which ones to send first, which ones to + delay, and which ones to drop. This is the job of the queueing + disciplines, several different algorithms for how to do this + "fairly" have been proposed. + + If you say N here, you will get the standard packet scheduler, which + is a FIFO (first come, first served). If you say Y here, you will be + able to choose from among several alternative algorithms which can + then be attached to different network devices. This is useful for + example if some of your network devices are real time devices that + need a certain minimum data flow rate, or if you need to limit the + maximum data flow rate for traffic which matches specified criteria. + This code is considered to be experimental. + + To administer these schedulers, you'll need the user-level utilities + from the package iproute2+tc at <ftp://ftp.tux.org/pub/net/ip-routing/>. + That package also contains some documentation; for more, check out + <http://linux-net.osdl.org/index.php/Iproute2>. + + 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 the corresponding + classifiers below. Documentation and software is at + <http://diffserv.sourceforge.net/>. + + If you say Y here and to "/proc file system" below, you will be able + to read status information about packet schedulers from the file + /proc/net/psched. + + The available schedulers are listed in the following questions; you + can say Y to as many as you like. If unsure, say N now. + +if NET_SCHED + +comment "Queueing/Scheduling" + +config NET_SCH_CBQ + tristate "Class Based Queueing (CBQ)" + ---help--- + Say Y here if you want to use the Class-Based Queueing (CBQ) packet + scheduling algorithm. 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. + + See the top of <file:net/sched/sch_cbq.c> for more details. + + 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 leaf disciplines. + + To compile this code as a module, choose M here: the + module will be called sch_cbq. + +config NET_SCH_HTB + tristate "Hierarchical Token Bucket (HTB)" + ---help--- + Say Y here if you want to use the Hierarchical Token Buckets (HTB) + packet scheduling algorithm. See + <http://luxik.cdi.cz/~devik/qos/htb/> for complete manual and + in-depth articles. + + HTB is very similar to 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 "Hierarchical Fair Service Curve (HFSC)" + ---help--- + Say Y here if you want to use the Hierarchical Fair Service Curve + (HFSC) packet scheduling algorithm. + + To compile this code as a module, choose M here: the + module will be called sch_hfsc. + +config NET_SCH_ATM + tristate "ATM Virtual Circuits (ATM)" + depends on ATM + ---help--- + Say Y here if you want to use the ATM pseudo-scheduler. This + provides a framework for invoking classifiers, 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> for more details. + + To compile this code as a module, choose M here: the + module will be called sch_atm. + +config NET_SCH_PRIO + tristate "Multi Band Priority Queueing (PRIO)" + ---help--- + Say Y here if you want to use an n-band priority queue packet + scheduler. + + To compile this code as a module, choose M here: the + module will be called sch_prio. + +config NET_SCH_MULTIQ + tristate "Hardware Multiqueue-aware Multi Band Queuing (MULTIQ)" + ---help--- + Say Y here if you want to use an n-band queue packet scheduler + to support devices that have multiple hardware transmit queues. + + To compile this code as a module, choose M here: the + module will be called sch_multiq. + +config NET_SCH_RED + tristate "Random Early Detection (RED)" + ---help--- + Say Y here if you want to use the Random Early Detection (RED) + packet scheduling algorithm. + + See the top of <file:net/sched/sch_red.c> for more details. + + To compile this code as a module, choose M here: the + module will be called sch_red. + +config NET_SCH_SFQ + tristate "Stochastic Fairness Queueing (SFQ)" + ---help--- + Say Y here if you want to use the Stochastic Fairness Queueing (SFQ) + packet scheduling algorithm. + + See the top of <file:net/sched/sch_sfq.c> for more details. + + To compile this code as a module, choose M here: the + module will be called sch_sfq. + +config NET_SCH_TEQL + tristate "True Link Equalizer (TEQL)" + ---help--- + Say Y here if you want to use the True Link Equalizer (TLE) packet + 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 more details. + + To compile this code as a module, choose M here: the + module will be called sch_teql. + +config NET_SCH_TBF + tristate "Token Bucket Filter (TBF)" + ---help--- + Say Y here if you want to use the Token Bucket Filter (TBF) packet + scheduling algorithm. + + See the top of <file:net/sched/sch_tbf.c> for more details. + + To compile this code as a module, choose M here: the + module will be called sch_tbf. + +config NET_SCH_GRED + tristate "Generic Random Early Detection (GRED)" + ---help--- + Say Y here if you want to use the Generic Random Early Detection + (GRED) 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 "Differentiated Services marker (DSMARK)" + ---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 (NETEM)" + ---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_CLS_ACT + ---help--- + Say Y here if you want to use classifiers for incoming packets. + If unsure, say Y. + + To compile this code as a module, choose M here: the + module will be called sch_ingress. + +comment "Classification" + +config NET_CLS + boolean + +config NET_CLS_BASIC + tristate "Elementary classification (BASIC)" + select NET_CLS + ---help--- + Say Y here if you want to be able to classify packets using + only extended matches and actions. + + To compile this code as a module, choose M here: the + module will be called cls_basic. + +config NET_CLS_TCINDEX + tristate "Traffic-Control Index (TCINDEX)" + select NET_CLS + ---help--- + Say Y here if you want to be able to classify packets based on + traffic control indices. You will want this feature if you want + to implement Differentiated Services together with DSMARK. + + To compile this code as a module, choose M here: the + module will be called cls_tcindex. + +config NET_CLS_ROUTE4 + tristate "Routing decision (ROUTE)" + select NET_CLS_ROUTE + select NET_CLS + ---help--- + If you say Y here, you will be able to classify packets + according to the route table entry they matched. + + To compile this code as a module, choose M here: the + module will be called cls_route. + +config NET_CLS_ROUTE + bool + +config NET_CLS_FW + tristate "Netfilter mark (FW)" + select NET_CLS + ---help--- + If you say Y here, you will be able to classify packets + according to netfilter/firewall marks. + + To compile this code as a module, choose M here: the + module will be called cls_fw. + +config NET_CLS_U32 + tristate "Universal 32bit comparisons w/ hashing (U32)" + select NET_CLS + ---help--- + Say Y here to be able to classify packets using a universal + 32bit pieces based comparison scheme. + + To compile this code as a module, choose M here: the + module will be called cls_u32. + +config CLS_U32_PERF + bool "Performance counters support" + depends on NET_CLS_U32 + ---help--- + Say Y here to make u32 gather additional statistics useful for + fine tuning u32 classifiers. + +config CLS_U32_MARK + bool "Netfilter marks support" + depends on NET_CLS_U32 + ---help--- + Say Y here to be able to use netfilter marks as u32 key. + +config NET_CLS_RSVP + tristate "IPv4 Resource Reservation Protocol (RSVP)" + select NET_CLS + ---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 "IPv6 Resource Reservation Protocol (RSVP6)" + select NET_CLS + ---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 IPv6 protocol. + + To compile this code as a module, choose M here: the + module will be called cls_rsvp6. + +config NET_CLS_FLOW + tristate "Flow classifier" + select NET_CLS + ---help--- + If you say Y here, you will be able to classify packets based on + a configurable combination of packet keys. This is mostly useful + in combination with SFQ. + + To compile this code as a module, choose M here: the + module will be called cls_flow. + +config NET_EMATCH + bool "Extended Matches" + select NET_CLS + ---help--- + Say Y here if you want to use extended matches on top of classifiers + and select the extended matches below. + + Extended matches are small classification helpers not worth writing + a separate classifier for. + + A recent version of the iproute2 package is required to use + extended matches. + +config NET_EMATCH_STACK + int "Stack size" + depends on NET_EMATCH + default "32" + ---help--- + Size of the local stack variable used while evaluating the tree of + ematches. Limits the depth of the tree, i.e. the number of + encapsulated precedences. Every level requires 4 bytes of additional + stack space. + +config NET_EMATCH_CMP + tristate "Simple packet data comparison" + depends on NET_EMATCH + ---help--- + Say Y here if you want to be able to classify packets based on + simple packet data comparisons for 8, 16, and 32bit values. + + To compile this code as a module, choose M here: the + module will be called em_cmp. + +config NET_EMATCH_NBYTE + tristate "Multi byte comparison" + depends on NET_EMATCH + ---help--- + Say Y here if you want to be able to classify packets based on + multiple byte comparisons mainly useful for IPv6 address comparisons. + + To compile this code as a module, choose M here: the + module will be called em_nbyte. + +config NET_EMATCH_U32 + tristate "U32 key" + depends on NET_EMATCH + ---help--- + Say Y here if you want to be able to classify packets using + the famous u32 key in combination with logic relations. + + To compile this code as a module, choose M here: the + module will be called em_u32. + +config NET_EMATCH_META + tristate "Metadata" + depends on NET_EMATCH + ---help--- + Say Y here if you want to be able to classify packets based on + metadata such as load average, netfilter attributes, socket + attributes and routing decisions. + + To compile this code as a module, choose M here: the + module will be called em_meta. + +config NET_EMATCH_TEXT + tristate "Textsearch" + depends on NET_EMATCH + select TEXTSEARCH + select TEXTSEARCH_KMP + select TEXTSEARCH_BM + select TEXTSEARCH_FSM + ---help--- + Say Y here if you want to be able to classify packets based on + textsearch comparisons. + + To compile this code as a module, choose M here: the + module will be called em_text. + +config NET_CLS_ACT + bool "Actions" + ---help--- + Say Y here if you want to use traffic control actions. Actions + get attached to classifiers and are invoked after a successful + classification. They are used to overwrite the classification + result, instantly drop or redirect packets, etc. + + A recent version of the iproute2 package is required to use + extended matches. + +config NET_ACT_POLICE + tristate "Traffic Policing" + depends on NET_CLS_ACT + ---help--- + Say Y here if you want to do traffic policing, i.e. strict + bandwidth limiting. This action replaces the existing policing + module. + + To compile this code as a module, choose M here: the + module will be called police. + +config NET_ACT_GACT + tristate "Generic actions" + depends on NET_CLS_ACT + ---help--- + Say Y here to take generic actions such as dropping and + accepting packets. + + To compile this code as a module, choose M here: the + module will be called gact. + +config GACT_PROB + bool "Probability support" + depends on NET_ACT_GACT + ---help--- + Say Y here to use the generic action randomly or deterministically. + +config NET_ACT_MIRRED + tristate "Redirecting and Mirroring" + depends on NET_CLS_ACT + ---help--- + Say Y here to allow packets to be mirrored or redirected to + other devices. + + To compile this code as a module, choose M here: the + module will be called mirred. + +config NET_ACT_IPT + tristate "IPtables targets" + depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES + ---help--- + Say Y here to be able to invoke iptables targets after successful + classification. + + To compile this code as a module, choose M here: the + module will be called ipt. + +config NET_ACT_NAT + tristate "Stateless NAT" + depends on NET_CLS_ACT + ---help--- + Say Y here to do stateless NAT on IPv4 packets. You should use + netfilter for NAT unless you know what you are doing. + + To compile this code as a module, choose M here: the + module will be called nat. + +config NET_ACT_PEDIT + tristate "Packet Editing" + depends on NET_CLS_ACT + ---help--- + Say Y here if you want to mangle the content of packets. + + To compile this code as a module, choose M here: the + module will be called pedit. + +config NET_ACT_SIMP + tristate "Simple Example (Debug)" + depends on NET_CLS_ACT + ---help--- + Say Y here to add a simple action for demonstration purposes. + It is meant as an example and for debugging purposes. It will + print a configured policy string followed by the packet count + to the console for every packet that passes by. + + If unsure, say N. + + To compile this code as a module, choose M here: the + module will be called simple. + +config NET_ACT_SKBEDIT + tristate "SKB Editing" + depends on NET_CLS_ACT + ---help--- + Say Y here to change skb priority or queue_mapping settings. + + If unsure, say N. + + To compile this code as a module, choose M here: the + module will be called skbedit. + +config NET_CLS_IND + bool "Incoming device classification" + depends on NET_CLS_U32 || NET_CLS_FW + ---help--- + Say Y here to extend the u32 and fw classifier to support + classification based on the incoming device. This option is + likely to disappear in favour of the metadata ematch. + +endif # NET_SCHED + +config NET_SCH_FIFO + bool |
