The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
drr – deficit round robin scheduler Synopsis tc qdisc … add drr [ quantum bytes ] Description The Deficit Round Robin Scheduler is a classful queuing discipline as a more flexible replacement for Stochastic Fairness Queuing. Unlike SFQ, there are no built-in queues — you need to add classes and then set up filters to…
ctinfo – tc connmark processing action Synopsis tc … action ctinfo [ dscp MASK [STATEMASK] ] [ cpmark [MASK] ] [ zone ZONE ] [ CONTROL ] [ index <INDEX> ] Description CTINFO (Conntrack Information) is a tc action for retrieving data from conntrack marks into various fields. At present it has two independent processing…
ct – tc connection tracking action Synopsis tc … action ct commit [ force ] [ zone ZONE ] [ mark MASKED_MARK ] [ label MASKED_LABEL ] [ nat NAT_SPEC ] tc … action ct [ nat ] [ zone ZONE ] tc … action ct clear Description The ct action is a tc action…
csum – checksum update action Synopsis tc … action csum UPDATE UPDATE := TARGET [ UPDATE ] TARGET := { ip4h | icmp | igmp | tcp | udp | udplite | sctp | SWEETS } SWEETS := { and | or | + } Description The csum action triggers checksum recalculation of specified packet…
connmark – netfilter connmark retriever action Synopsis tc … action connmark [ zone u16_zone_index ] [ CONTROL ] [ index u32_index ] CONTROL := { reclassify | pipe | drop | continue | ok } Description The connmark action is used to restore the connection’s mark value into the packet’s fwmark. Options zone u16_zone_index Specify…
CoDel – Controlled-Delay Active Queue Management algorithm Synopsis tc qdisc … codel [ limit PACKETS ] [ target TIME ] [ interval TIME ] [ ecn | noecn ] [ ce_threshold TIME ] Description CoDel (pronounced "coddle") is an adaptive "no-knobs" active queue management algorithm (AQM) scheme that was developed to address the shortcomings of…
choke – choose and keep scheduler Synopsis tc qdisc … choke limit packets min packets max packets avpkt bytes burst packets [ ecn ] [ bandwidth rate ] probability chance Description CHOKe (CHOose and Keep for responsive flows, CHOose and Kill for unresponsive flows) is a classless qdisc designed to both identify and penalize flows…
cgroup – control group based traffic control filter Synopsis tc filter … cgroup [ match EMATCH_TREE ] [ action ACTION_SPEC ] Description This filter serves as a hint to tc that the assigned class ID of the net_cls control group the process the packet originates from belongs to should be used for classification. Obviously, it…
CBS – Credit Based Shaper (CBS) Qdisc Synopsis tc qdisc … dev dev parent classid [ handle major: ] cbs idleslope idleslope sendslope sendslope hicredit hicredit locredit locredit [ offload 0|1 ] Description The CBS (Credit Based Shaper) qdisc implements the shaping algorithm defined by the IEEE 802.1Q-2014 Section 8.6.8.2, which applies a well defined…
CBQ – Class Based Queueing Synopsis tc qdisc … dev dev ( parent classid | root) [ handle major: ] cbq [ allot bytes ] avpkt bytes bandwidth rate [ cell bytes ] [ ewma log ] [ mpu bytes ] tc class … dev dev parent major:[minor] [ classid major:minor ] cbq allot bytes…
CBQ – Class Based Queueing Synopsis tc qdisc … dev dev ( parent classid | root) [ handle major: ] cbq avpkt bytes bandwidth rate [ cell bytes ] [ ewma log ] [ mpu bytes ] tc class … dev dev parent major:[minor] [ classid major:minor ] cbq allot bytes [ bandwidth rate ]…
CAKE – Common Applications Kept Enhanced (CAKE) Synopsis tc qdisc … cake [ bandwidth RATE | unlimited* | autorate-ingress ] [ rtt TIME | datacentre | lan | metro | regional | internet* | oceanic | satellite | interplanetary ] [ besteffort | diffserv8 | diffserv4 | diffserv3* ] [ flowblind | srchost | dsthost…
BPF – BPF programmable classifier and actions for ingress/egress queueing disciplines Synopsis eBPF classifier (filter) or action: tc filter … bpf [ object-file OBJ_FILE ] [ section CLS_NAME ] [ export UDS_FILE ] [ verbose ] [ direct-action | da ] [ skip_hw | skip_sw ] [ police POLICE_SPEC ] [ action ACTION_SPEC ] […
pfifo – Packet limited First In, First Out queue bfifo – Byte limited First In, First Out queue Synopsis tc qdisc … add pfifo [ limit packets ] tc qdisc … add bfifo [ limit bytes ] Description The pfifo and bfifo qdiscs are unadorned First In, First Out queues. They are the simplest queues…
basic – basic traffic control filter Synopsis tc filter … basic [ match EMATCH_TREE ] [ action ACTION_SPEC ] [ classid CLASSID ] Description The basic filter allows to classify packets using the extended match infrastructure. Options action ACTION_SPEC Apply an action from the generic actions framework on matching packets. classid CLASSID Push matching packets…
actions – independently defined actions in tc Synopsis tc [ TC_OPTIONS ] actions add | change | replace ACTSPEC tc [ TC_OPTIONS ] actions get | delete ACTISPEC tc [ TC_OPTIONS ] actions flush ACTNAMESPEC tc [ TC_OPTIONS ] actions ls | list ACTNAMESPEC [ ACTFILTER ] ACTSPEC := action ACTDETAIL [ INDEXSPEC ] […
tb_polgen – manage tboot verified launch policy Synopsis tb_polgen COMMAND [OPTION] Description tb_polgen is used to manage tboot verified launch policy. Commands –create Create an empty tboot verified launch policy file. –type nonfatal | continue | halt Nonfatal means ignoring all non-fatal errors and continuing. Continue means ignoring verification errors and halting otherwise. Halt means…
tayga – stateless NAT64 daemon Synopsis tayga [OPTION]… tayga –mktun [OPTION]… tayga –rmtun [OPTION]… Description TAYGA is a stateless NAT64 daemon for Linux. Using the in-kernel TUN network driver, TAYGA receives IPv4 and IPv6 packets from the host’s network stack, translates them to the other protocol, and then sends the translated packets back to the…
targetd_selinux – Security Enhanced Linux Policy for the targetd processes Description Security-Enhanced Linux secures the targetd processes via flexible mandatory access control. The targetd processes execute with the targetd_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier. For example: ps -eZ | grep…
targetd Description targetd is a service to allow the remote configuration of block device volumes and file systems within dedicated pools. Block devices can be exported to other hosts via iSCSI, and filesystems can be exported via NFS. Usage Run targetd as root. Configuration targetd uses /etc/target/targetd.yaml for configuration. It is in YAML format. targetd…