Bug 1170

Summary:	Link status is not correclty updated for E810 NIC (ice driver) on Windows
Product:	DPDK	Reporter:	Eric Houet (e.houet)
Component:	ethdev	Assignee:	qi.z.zhang (qi.z.zhang)
Status:	UNCONFIRMED ---
Severity:	normal	CC:	a.pollenus, david.marchand, ktraynor, qiming.yang, qi.z.zhang
Priority:	Normal
Version:	22.11
Target Milestone:	---
Hardware:	All
OS:	Windows

Description Eric Houet 2023-02-28 17:52:18 CET

Hello,

I have an issue regarding the link status when using a Intel E810 NIC with DPDK.

I have a simple sample which simply loops, call `rte_eth_link_get` and prints the result.

When using a E810 NIC, I have the following behaviour : 
- At the start of the test, the cable is plugged in;
- I launch the sample, the link is reported as up (as expected)
- I unplug the cable
- The link is still reported as up in the sample (not expected).
- I stop the sample and relaunch it
- The link is reported as down by the sample (as expected)
- I replug the cable
- The link is still reported as down by the sample (not expected).

I looks like, once DPDK is started, the link status of the device is not correctly updated.

When trying this with an XXV710 (i40e driver), i have no issue.

According to the Overview of Networking Drivers( https://doc.dpdk.org/guides-21.02/nics/overview.html ), the ice driver is compatible  with "Link Status" and "Link Status Event" functionalities.

-------------------------------------------------------------
Setup:
- DPDK v22.11.1
- DDP : ice-1.3.30.0.pkg.

Comment 1 Kevin Traynor 2023-03-01 16:07:33 CET

Adding ICE maintainers

Comment 2 Antoine Pollenus 2023-03-23 10:53:13 CET

After more investigation the issue is not present on linux.

This issue ONLY appear on Windows.