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: dev@dpdk.org
Reporter: matias....@nokia.com
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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