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FIREQOS-PARAMS-MATCH(5) - Linux man page online | File formats

Optional match parameters.

Chapter
Built 04 Nov 2017
fireqos-params-match(5) 3.1.5 fireqos-params-match(5)

NAME

fireqos-params-match - optional match parameters

SYNOPSIS

at { root | name } class name syn|syns ack|acks { proto|protocol protocol [,protocol...] } |tcp|udp|icmp|gre|ipv6 { tos | priority } tosid [,tosid...] { DSCP } classname [,classname...] mark mark [,mark...] connmark mark [,mark...] rawmark mark [,mark...] custommark name mark [,mark...] { port | ports } port[:range] [ ,port[:range]... ] { sport | sports } port[:range] [ ,port[:range]... ] { dport | dports } port[:range] [ ,port[:range]... ] { ip | net | host } net [,net...] src net [,net...] dst net [,net...] { srcmac | smac } mac { dstmac | dmac } mac prio id input output custom 'custom tc parameters' estimator interval decay police police insidegre

DESCRIPTION

These options apply to match statements. input, output On bidirectional interfaces, input and output will check the current direction of the in‐ terface. If the match is input but the interface is output the match will be reversed. The same will happen if output is given at the match and the interface is input. The parameters that are reversed are: · src and dst · sport and dport · srcmac and dstmac This allows a definition like this: interface dsl0 world bidirectional ... class surfing ... match input sport 0:1023 The above will match sport 0:1023 at the input interface, and will automatically reverse it to match dport 0:1023 at the output interface. at By default a match is attached to the parent of its parent class. For example, if its parent is a class directly under the interface, then the match is attached to the inter‐ face and is compared against all traffic of the interface. For nested classes, a match of a leaf, is attached to the parent class and is compared against all traffic of this parent class. With the at parameter, a match can be attached any class. The name parameter should be a class name. The name root attaches the match to the interface. class Defines the name of the class that will get the packets matched by this match. By default it is the name of the class the match statement appears under. Note There is also a class definition for traffic, see fireqos-class(5). syn, syns Match TCP SYN packets. Note that the tcp parameter must be specified. If the same match statement includes more protocols than TCP, then this match will work for the TCP packets (it will be silently ignored for all other protocols). For example, syn is ignored when generating the UDP filter in the below: match tcp syn match proto tcp,udp syn ack, acks Same as syn, but matching small TCP packets with the ACK bit set. proto, protocol, tcp, udp, icmp, gre, ipv6 Match the protocol in the IP header. tos, priority Match to TOS field of ipv4 or the priority field of ipv6. The tosid can be a value/mask in any format tc(8) accepts, or one of the following: · min-delay, minimize-delay, minimum-delay, low-delay, interactive · maximize-throughput, maximum-throughput, max-throughput, high-throughput, bulk · maximize-reliability, maximum-reliability, max-reliability, reliable · min-cost, minimize-cost, minimum-cost, low-cost, cheap, normal-service, normal Note There is also a class parameter called priority, see fireqos-params-class(5). dscp Match to DSCP value in IP TOS header field. The classname has to be one of the following values: · CS1, CS2, CS3, CS4, CS5, CS6, CS7 · AF11, AF12, AF13 · AF21, AF22, AF23 · AF31, AF32, AF33 · AF41, AF42, AF43 · EF Note tc-filter only supports ToS parameters. That is why a lookaside table is configured within fireqos code to translate the DSCP value to their matching TOS value. See RFC2474 for more information. mark, connmark, custommark, rawmark Match an iptables(8) MARK. This works the same way it works for FireHOL. FireHOL and FireQOS share the same marks and their masks. Matching iptables(8) MARKs do not work on input interfaces. You can use them only on out‐ put. The IFB devices that are used for shaping inbound traffic do not have any iptables hooks to allow matching MARKs. If you try it, FireQOS will attempt to do it, but current‐ ly you will get an error from the tc(8) command executed or they will be silently ignored by it. On some Linux distributions (e.g. OpenWRT) there is a module called act_commark that will enable this feature. Set this within your fireqos.conf to enable it: FIREQOS_CONNMARK_RESTORE="act_connmark" Also note that matching marks requires a suitably configured kernel (with CON‐ FIG_CLS_U32_MARK=y). There is no error if the kernel is not configured correctly; it just silently drops the rules. For details see this error report (https://github.com/fire‐ hol/firehol/issues/231). ports, sports, dports Match ports of the IP header. ports will create rules for matching source and destination ports (separate rules for each). dports matches destination ports, sports matches source ports. ip, net, host, src, dst Match IPs of the IP header. ip, net and host will create rules for matching source and destination IPs (separate rules for each). src matches source IPs and dst destination IPs. Note If the class these matches appear in are IPv4, then only IPv4 IPs can be used. To override use match6 ... src/dst *IPV6_IP* Similarly, if the class is IPv6, then only IPv6 IPs can be used. To override use match4 ... src/dst *IPV4_IP*. You can mix IPv4 and IPv6 in any way you like. FireQOS supports inheritance, to figure out for each statement which is the default. For example: interface46 eth0 lan output rate 1Gbit # ipv4 and ipv6 enabled class voip # ipv4 and ipv6 class, as interface is both match udp port 53 # ipv4 and ipv6 rule, as class is both match4 src 192.0.2.1 # ipv4 only rule match6 src 2001:db8::1 # ipv6 only rule class4 realtime # ipv4 only class match src 198.51.100.1 # ipv4 only rule, as class is ipv4-only class6 servers # ipv6 only class match src 2001:db8::2 # ipv6 only rule, as class is ipv6-only To convert an IPv4 interface to IPv6, just replace interface with interface6. All the rules in that interface, will automatically inherit the new protocol. Of course, if you use IP addresses for matching packets, make sure they are IPv6 IPs too. prio (match) Note There is also a class parameter called prio, see fireqos-params-class(5). All match statements are attached to the interface. They forward traffic to their class, but they are actually executed for all packets that are leaving the interface (note: input matches are actually output matches on an IFB device). By default, the priority they are executed, is the priority they appear in the configura‐ tion file, i.e. the first match of the first class is executed first, then the rest matches of the first class in the sequence they appear, then the matches of the second class, etc. It is sometimes necessary to control the order of matches. For example, when you want host 192.0.2.1 to be assigned the first class, except port tcp/1234 which should be as‐ signed the second class. The following will not work: interface eth0 lan output rate 1Gbit class high match host 192.0.2.1 class low match host 192.0.2.1 port 1234 # Will never match In this case, the first match is assigned priority 10 and the second priority 20. The second match will never match anything, since all traffic for the host is already matched by the first one. Setting an explicit priority allows you to change the order in which the matches are exe‐ cuted. FireQOS gives priority 10 to the first match of every interface, 20 to the second match, 30 to the third match, etc. So the default is 10 x the sequence number. You can set prio to overwrite this number. To force executing the second match before the first, just set a lower priority for it. For example, this will cause the desired behaviour: interface eth0 lan output rate 1Gbit class high match host 192.0.2.1 class low match host 192.0.2.1 port 1234 prio 1 # Matches before host-only insidegre By specifying keyword insidegre a GRE (Generic Routing Encapsulation) packet can be matched on the encapsulated IP packet header information. insidegre is available for the following matches: · src · dst · protocol · port · tos · dscp interface eth0 world ... class surfing commit 128kbit ceil 1024kbit prio 7 match src 10.1.128.230 dst 8.8.8.8 insidegre match protocol ospf insidegre match port 25 insidegre match tos 3 insidegre match dscp ef insidegre

SEE ALSO

· fireqos(1) - FireQOS program · fireqos.conf(5) - FireQOS configuration file · fireqos-match(5) - QOS traffic match · FireHOL Website (http://firehol.org/) · FireQOS Online PDF Manual (http://firehol.org/fireqos-manual.pdf) · FireQOS Online Documentation (http://firehol.org/documentation/)

AUTHORS

FireHOL Team.
FireQOS Reference Built 04 Nov 2017 fireqos-params-match(5)
This manual Reference Other manuals
fireqos-params-match(5) referred by fireqos-class(5) | fireqos-match(5) | fireqos-params(5) | fireqos-params-class(5)
refer to fireqos(1) | fireqos-class(5) | fireqos-conf(5) | fireqos-match(5) | fireqos-params-class(5) | iptables(8) | tc(8)
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