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Diffstat (limited to 'Documentation/networking/devlink/devlink-port.rst')
| -rw-r--r-- | Documentation/networking/devlink/devlink-port.rst | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/Documentation/networking/devlink/devlink-port.rst b/Documentation/networking/devlink/devlink-port.rst index 643f5903d1d8..98557c2ab1c1 100644 --- a/Documentation/networking/devlink/devlink-port.rst +++ b/Documentation/networking/devlink/devlink-port.rst @@ -130,10 +130,11 @@ it is deployed. Subfunction is created and deployed in unit of 1. Unlike SRIOV VFs, a subfunction doesn't require its own PCI virtual function. A subfunction communicates with the hardware through the parent PCI function. -To use a subfunction, 3 steps setup sequence is followed. -(1) create - create a subfunction; -(2) configure - configure subfunction attributes; -(3) deploy - deploy the subfunction; +To use a subfunction, 3 steps setup sequence is followed: + +1) create - create a subfunction; +2) configure - configure subfunction attributes; +3) deploy - deploy the subfunction; Subfunction management is done using devlink port user interface. User performs setup on the subfunction management device. @@ -216,13 +217,17 @@ nodes with the same priority form a WFQ subgroup in the sibling group and arbitration among them is based on assigned weights. Arbitration flow from the high level: + #. Choose a node, or group of nodes with the highest priority that stays within the BW limit and are not blocked. Use ``tx_priority`` as a parameter for this arbitration. + #. If group of nodes have the same priority perform WFQ arbitration on that subgroup. Use ``tx_weight`` as a parameter for this arbitration. + #. Select the winner node, and continue arbitration flow among it's children, until leaf node is reached, and the winner is established. + #. If all the nodes from the highest priority sub-group are satisfied, or overused their assigned BW, move to the lower priority nodes. |