From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 6479F4617B; Mon, 3 Feb 2025 05:29:22 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5330E40287; Mon, 3 Feb 2025 05:29:22 +0100 (CET) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id B7AD240264 for ; Mon, 3 Feb 2025 05:29:20 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id B1DA04617C; Mon, 3 Feb 2025 05:29:20 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/ethdev Bug 1653] PHY link up fails when rebinding i40e NICs to kernel driver Date: Mon, 03 Feb 2025 04:29:20 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: ethdev X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: nandinipersad361@gmail.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: multipart/alternative; boundary=17385569600.785504.2168410 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --17385569600.785504.2168410 Date: Mon, 3 Feb 2025 05:29:20 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1653 Bug ID: 1653 Summary: PHY link up fails when rebinding i40e NICs to kernel driver Product: DPDK Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: ethdev Assignee: dev@dpdk.org Reporter: nandinipersad361@gmail.com Target Milestone: --- Some kernel drivers are not able to handle the link status correctly after = DPDK application sets the PHY to link down. Implication: The link status can=E2=80=99t be set to =E2=80=9Cup=E2=80=9D after the NIC = is rebound to the kernel driver. Before a DPDK application quits it will invoke the function i40e_dev_stop() which will sets the PHY to link down. Some kernel drivers m= ay not be able to handle the link status correctly after it retakes control of= the device. This is a known PHY link configuration issue in the i40e kernel dri= ver. The fix has been addressed in the 2.7.4 rc version. So if the i40e kernel driver is < 2.7.4 and doesn=E2=80=99t have the fix backported it will encou= nter this issue. Resolution/Workaround: First try to remove and reinsert the i40e kernel driver. If that fails rebo= ot the system. Affected Environment/Platform: All. Driver/Module: Poll Mode Driver (PMD). --=20 You are receiving this mail because: You are the assignee for the bug.= --17385569600.785504.2168410 Date: Mon, 3 Feb 2025 05:29:20 +0100 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All
Bug ID 1653
Summary PHY link up fails when rebinding i40e NICs to kernel driver
Product DPDK
Version unspecified
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component ethdev
Assignee dev@dpdk.org
Reporter nandinipersad361@gmail.com
Target Milestone --- 

Some kernel drivers are not able t=
o handle the link status correctly after DPDK
application sets the PHY to link down.

Implication:
The link status can=E2=80=99t be set to =E2=80=9Cup=E2=80=9D after the NIC =
is rebound to the kernel
driver. Before a DPDK application quits it will invoke the function
i40e_dev_stop() which will sets the PHY to link down. Some kernel drivers m=
ay
not be able to handle the link status correctly after it retakes control of=
 the
device. This is a known PHY link configuration issue in the i40e kernel dri=
ver.
The fix has been addressed in the 2.7.4 rc version. So if the i40e kernel
driver is < 2.7.4 and doesn=E2=80=99t have the fix backported it will en=
counter this
issue.

Resolution/Workaround:
First try to remove and reinsert the i40e kernel driver. If that fails rebo=
ot
the system.

Affected Environment/Platform:
All.

Driver/Module:
Poll Mode Driver (PMD).

You are receiving this mail because:
  • You are the assignee for the bug.
=20=20=20=20=20=20=20=20=20=20
= --17385569600.785504.2168410--