Bug 1346

Summary:	net/i40e does not report interrupt for the second packet
Product:	DPDK	Reporter:	Andrew Rybchenko (andrew.rybchenko)
Component:	ethdev	Assignee:	dev
Status:	UNCONFIRMED ---
Severity:	normal
Priority:	Normal
Version:	23.11
Target Milestone:	---
Hardware:	All
OS:	All

Description Andrew Rybchenko 2024-01-09 20:24:03 CET

net/i40e does not report interrupt for the second packet

If I understand Rx interrupts functionality correctly, Rx interrupts should be generated until disabled. However, it does not happen in the case of i40e with X710 NIC.

The problem is found by open-source test suite which has been run at UNH IOL [1].

Scenario is simple:
 - enable Rx interrupts
 - send packet from peer
 - check interrupt, receive packet
 - send one more packet
 - check interrupt - failure, no interupt

[1] https://ts-factory.io/bublik/v2/log/362398?mode=treeAndlog&focusId=363533&experimental=true&lineNumber=1_69