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   dcb-pfc    ( 8 )

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Имя (Name)

dcb-pfc - show / manipulate PFC (Priority-based Flow Control) settings of the DCB (Data Center Bridging) subsystem

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Синопсис (Synopsis)

dcb [ OPTIONS ] pfc { COMMAND | help }

dcb pfc show dev DEV [ pfc-cap ] [ prio-pfc ] [ macsec-bypass ] [ delay ] [ requests ] [ indications ]

dcb pfc set dev DEV [ prio-pfc PFC-MAP ] [ macsec-bypass { on | off } ] [ delay INTEGER ]

PFC-MAP := [ PFC-MAP ] PFC-MAPPING

PFC-MAPPING := { PRIO | all }:{ on | off }

PRIO := { 0 .. 7 }

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Описание (Description)

dcb pfc is used to configure Priority-based Flow Control attributes through Linux DCB (Data Center Bridging) interface. PFC permits marking flows with a certain priority as lossless, and holds related configuration, as well as PFC counters.

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Параметры (Parameters)

For read-write parameters, the following describes only the write
       direction, i.e. as used with the set command. For the show
       command, the parameter name is to be used as a simple keyword
       without further arguments. This instructs the tool to show the
       value of a given parameter. When no parameters are given, the
       tool shows the complete PFC configuration.

       pfc-cap
              A read-only property that shows the number of traffic
              classes that may simultaneously support PFC.

       requests
              A read-only count of the sent PFC frames per traffic
              class. Only shown when -s is given, or when requested
              explicitly.

       indications
              A read-only count of the received PFC frames per traffic
              class. Only shown when -s is given, or when requested
              explicitly.

       macsec-bypass { on | off }
              Whether the sending station is capable of bypassing MACsec
              processing when MACsec is disabled.

       prio-pfc PFC-MAP
              PFC-MAP uses the array parameter syntax, see dcb(8) for
              details. Keys are priorities, values are on / off
              indicators of whether PFC is enabled for a given priority.

       delay INTEGER
              The allowance made for round-trip propagation delay of the
              link in bits.  The value shall be 0..65535.

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Примеры (Examples)

Enable PFC on priorities 6 and 7, leaving the rest intact:

       # dcb pfc set dev eth0 prio-pfc 6:on 7:on

       Disable PFC of all priorities except 6 and 7, and configure delay
       to 4096 bits:

       # dcb pfc set dev eth0 prio-pfc all:off 6:on 7:on delay 0x1000

       Show what was set:

       # dcb pfc show dev eth0
       pfc-cap 8 macsec-bypass off delay 4096
       prio-pfc 0:off 1:off 2:off 3:off 4:off 5:off 6:on 7:on

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Статус выхода (Exit)

Exit status is 0 if command was successful or a positive integer upon failure.

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Смотри также (See also)

dcb(8)

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Сообщение об ошибках (Reporting bugs)

Report any bugs to the Network Developers mailing list <netdev@vger.kernel.org> where the development and maintenance is primarily done. You do not have to be subscribed to the list to send a message there.

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