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Queue Driver Interaction
page -10 OmniSwitch Troubleshooting Guide September 2005
QoS Policy Deleted
When a QoS Policy is deleted, the QoS Manager is notified. It checks to see if there are any flows associ-
ated with the QoS Policy. The queue id for all the pseudo cam entries associated with the policy should be
reprogrammed with a default queue and the existing queue has to be freed. The QoS Manager requests the
Queue Driver to free the queue.
L2 destination MAC Aged/Deleted
When a L2 destination MAC address is aged/deleted from the pseudo cam, the QoS Manager is notified.
QoS Manager checks to see if any QoS Policy was configured for this MAC address. If so it checks to see
if the queue associated with this MAC is used for any other flows. If not the QoS Manager requests the
Queue Driver to free the queue.
L3 PseudoCAM Entry Aged/Deleted
When a L2/L3 pseudo cam entry is aged/deleted, the QoS Manager is notified. QoS Manager checks to see
if any QoS Policy was configured for this L2/L3 flow. If so it checks to see if the queue associated with
this flow is used for any other flows. If not the QoS Manager requests the Queue Driver to free the queue.
Request to Free Queues Sent to QoS Manager
Request for freeing some qos queues, when there are no sufficient queues available for allocating for link
aggregation, is sent to the QoS.
Link Goes Up/Down
When a link goes up or down the qos requests for freeing/adding the QoS queues associated with those
ports if any policies exists on those ports.