eventdev sw rx adapter enqueue buffer may store packets indefinitely
https://bugs.dpdk.org/show_bug.cgi?id=277
Bug ID: 277
Summary: eventdev sw rx adapter enqueue buffer may store
packets indefinitely
Product: DPDK
Version: 19.05
Hardware: All
OS: All
Status: CONFIRMED
Severity: normal
Priority: Normal
Component: eventdev
Assignee: [email protected]
Reporter: [email protected]Target Milestone: ---
The sw eventdev rx adapter has an internal enqueue buffer 'rx_adapter->event_enqueue_buffer', which stores packets received from the NIC until at least BATCH_SIZE (=32) packets have been received before enqueueing them to eventdev. If not enough packets (BATCH_SIZE) are received or the system stops receiving new packets, existing packets stored in the enqueue buffer are never passed to eventdev.
Situation like this occurs easily for example when performing validation testing with predefined test packets. Additionally, if packet receive rate is slow, this adds a considerable amount of extra delay.
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