Bug 1895393
| Summary: | ethtool: not all supported link modes are advertised when only autoneg on is specified | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Ivan Vecera <ivecera> |
| Component: | ethtool | Assignee: | Ivan Vecera <ivecera> |
| Status: | CLOSED ERRATA | QA Contact: | Tianhao <tizhao> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 8.4 | CC: | hwkernel-mgr, tizhao |
| Target Milestone: | rc | Keywords: | Regression |
| Target Release: | 8.4 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-05-18 13:35:02 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1878826 | ||
| Bug Blocks: | |||
Hi Ivan, Could you also prepare the test HW for me as in comment #1 to verify the bug? Thanks in advance. Regards, Tianhao Set verified based on comment #6 and comment #7. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (ethtool bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2021:1576 |
Description of problem: With older ethtool version (<5.8) that is based on ioctl interface the advertised link modes are set to the supported link modes when only autoneg on is set without specifying speed, duplex or link modes. This is not true for newer ethtool (>=v5.8) that just enable auto-negotiation but leaves advertised link modes untouched. Version-Release number of selected component (if applicable): ethtool-5.8-3.el8 How reproducible: 100% with mlxsw driver Steps to Reproduce: 1. Enable auto-negotiation but limit advertised link modes 2. Check link status 3. Enable auto-negotiation (no limitation) 4. Check link status Actual results: 1. Enable autoneg and limit advertised link modes to 10Gbit [root@mlxsw-1 ~]# ethtool -s enp6s0np17 autoneg on speed 10000 2. Verify [root@mlxsw-1 ~]# ethtool enp6s0np17 Settings for enp6s0np17: ... Advertised link modes: 10000baseT/Full 10000baseKR/Full 10000baseR_FEC 10000baseCR/Full 10000baseSR/Full 10000baseLR/Full 10000baseER/Full ... 3. Enable autoneg without any limit [root@mlxsw-1 ~]# ethtool -s enp6s0np17 autoneg on 4. Verify: [root@mlxsw-1 ~]# ethtool enp6s0np17 Settings for enp6s0np17: ... Advertised link modes: 10000baseT/Full 10000baseKR/Full 10000baseR_FEC 10000baseCR/Full 10000baseSR/Full 10000baseLR/Full 10000baseER/Full ... Advertised link-modes are still limited ^^^^^^^^ Expected results: 1. Enable autoneg and limit advertised link modes to 10Gbit [root@mlxsw-1 ~]# ethtool -s enp6s0np17 autoneg on speed 10000 2. Verify [root@mlxsw-1 ~]# ethtool enp6s0np17 Settings for enp6s0np17: ... Advertised link modes: 10000baseT/Full 10000baseKR/Full 10000baseR_FEC 10000baseCR/Full 10000baseSR/Full 10000baseLR/Full 10000baseER/Full ... 3. Enable autoneg without any limit [root@mlxsw-1 ~]# ethtool -s enp6s0np17 autoneg on 4. Verify: [root@mlxsw-1 ~]# ethtool enp6s0np17 Settings for enp6s0np17: ... Advertised link modes: 1000baseT/Full 10000baseT/Full 1000baseKX/Full 10000baseKR/Full 10000baseR_FEC 40000baseKR4/Full 40000baseCR4/Full 40000baseSR4/Full 40000baseLR4/Full 25000baseCR/Full 25000baseKR/Full 25000baseSR/Full 50000baseCR2/Full 50000baseKR2/Full 100000baseKR4/Full 100000baseSR4/Full 100000baseCR4/Full 100000baseLR4_ER4/Full 50000baseSR2/Full 10000baseCR/Full 10000baseSR/Full 10000baseLR/Full 10000baseER/Full ... All possible link modes are reported ^^^^^^^