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Diffstat (limited to 'net/sched/Kconfig')
| -rw-r--r-- | net/sched/Kconfig | 508 |
1 files changed, 508 insertions, 0 deletions
diff --git a/net/sched/Kconfig b/net/sched/Kconfig new file mode 100644 index 00000000000..3d1d902dd1a --- /dev/null +++ b/net/sched/Kconfig @@ -0,0 +1,508 @@ +# +# 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_BASIC + tristate "Basic classifier" + depends on 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 "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_EMATCH + bool "Extended Matches" + depends on 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. + + You must have a recent version of the iproute2 tools in order 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 addtional + 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 hashing 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 ablt 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_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. + |