`devlink-rate` ( 8 )

управление скоростью devlink (devlink rate management)

Имя (Name)

devlink-rate - devlink rate management

Синопсис (Synopsis)

devlink [ OPTIONS ] port function rate { COMMAND | help }

OPTIONS := { -j[son] | -p[retty] | -i[ec] }

devlink port function rate show [ { DEV/PORT_INDEX | DEV/NODE_NAME } ]

devlink port function rate set { DEV/PORT_INDEX | DEV/NODE_NAME } [ tx_share VALUE ] [ tx_max VALUE ] [ { parent NODE_NAME | noparent } ]

devlink port function rate add DEV/NODE_NAME [ tx_share VALUE ] [ tx_max VALUE ] [ { parent NODE_NAME | noparent } ]

devlink port function rate del DEV/NODE_NAME

devlink port function rate help

Описание (Description)

devlink port function rate show - display rate objects. Displays specified rate object or, if not specified, all rate objects. Rate object can be presented by one of the two types:

leaf Represents a single devlink port; created/destroyed by the driver and bound to the devlink port. As example, some driver may create leaf rate object for every devlink port associated with VF. Since leaf have 1to1 mapping to it's devlink port, in user space it is referred as corresponding devlink port DEV/PORT_INDEX;

node Represents a group of rate objects; created/deleted by the user (see command below) and bound to the devlink device rather then to the devlink port. In userspace it is referred as DEV/NODE_NAME, where node name can be any, except decimal number, to avoid collisions with leafs.

Command output show rate object identifier, it's type and rate values along with parent node name. Rate values printed in SI units which are more suitable to represent specific value. To print values in IEC units -i switch is used. JSON (-j) output always print rate values in bytes per second. Zero rate values means "unlimited" rates and ommited in output, as well as parent node name.

devlink port function rate set - set rate object parameters. Allows set rate object's parameters. If any parameter specified multiple times the last occurrence is used.

DEV/PORT_INDEX - specifies devlink leaf rate object. DEV/NODE_NAME - specifies devlink node rate object.

tx_share VALUE - specifies minimal tx rate value shared among all rate objects. If rate object is a part of some rate group, then this value shared with rate objects of this rate group.

tx_max VALUE - specifies maximum tx rate value.

VALUE These parameter accept a floating point number, possibly followed by either a unit (both SI and IEC units supported).

bit or a bare number Bits per second

kbit Kilobits per second

mbit Megabits per second

gbit Gigabits per second

tbit Terabits per second

bps Bytes per second

kbps Kilobytes per second

mbps Megabytes per second

gbps Gigabytes per second

tbps Terabytes per second

To specify in IEC units, replace the SI prefix (k-, m-, g-, t-) with IEC prefix (ki-, mi-, gi- and ti-) respectively. Input is case-insensitive.

parent NODE_NAME | noparent - set rate object parent to existing node with name NODE_NAME or unset parent. Rate limits of the parent node applied to all it's children. Actual behaviour is details of driver's implementation. Setting parent to empty ("") name due to the kernel logic threated as parent unset.

devlink port function rate add - create node rate object with specified parameters. Creates rate object of type node and sets parameters. Parameters same as for the "set" command.

DEV/NODE_NAME - specifies the devlink node rate object to create.

devlink port function rate del - delete node rate object Delete specified devlink node rate object. Node can't be deleted if there is any child, user must explicitly unset the parent.

DEV/NODE_NAME - specifies devlink node rate object to delete.

devlink port function rate help - display usage information Display devlink rate usage information

Примеры (Examples)

* Display all rate objects:

           # devlink port function rate show
           pci/0000:03:00.0/1 type leaf parent some_group
           pci/0000:03:00.0/2 type leaf tx_share 12Mbit
           pci/0000:03:00.0/some_group type node tx_share 1Gbps tx_max
           5Gbps

       * Display leaf rate object bound to the 1st devlink port of the
       pci/0000:03:00.0 device:

           # devlink port function rate show pci/0000:03:00.0/1
           pci/0000:03:00.0/1 type leaf

       * Display leaf rate object rate values using IEC units:

           # devlink -i port function rate show pci/0000:03:00.0/2
           pci/0000:03:00.0/2 type leaf 11718Kibit

       * Display node rate object with name some_group of the
       pci/0000:03:00.0 device:

           # devlink port function rate show pci/0000:03:00.0/some_group
           pci/0000:03:00.0/some_group type node

       * Display pci/0000:03:00.0/2 leaf rate object as pretty JSON
       output:

           # devlink -jp port function rate show pci/0000:03:00.0/2
           {
               "rate": {
                   "pci/0000:03:00.0/2": {
                       "type": "leaf",
                       "tx_share": 1500000
                   }
               }
           }

       * Create node rate object with name "1st_group" on
       pci/0000:03:00.0 device:

           # devlink port function rate add pci/0000:03:00.0/1st_group

       * Create node rate object with specified parameters:

           # devlink port function rate add pci/0000:03:00.0/2nd_group \
                tx_share 10Mbit tx_max 30Mbit parent 1st_group

       * Set parameters to the specified leaf rate object:

           # devlink port function rate set pci/0000:03:00.0/1 \
                tx_share 2Mbit tx_max 10Mbit

       * Set leaf's parent to "1st_group":

           # devlink port function rate set pci/0000:03:00.0/1 parent
           1st_group

       * Unset leaf's parent:

           # devlink port function rate set pci/0000:03:00.0/1 noparent

       * Delete node rate object:

           # devlink port function rate del pci/0000:03:00.0/2nd_group

Смотри также (See also)

devlink(8), devlink-port(8)