netdev - Re: [REGRESSION] ixgbe broken after devlink support patch

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Message-ID: <59faaf3b-d75d-4405-a7bb-a137918617e3@intel.com>
Date: Tue, 17 Jun 2025 11:01:18 +0200
From: Przemek Kitszel <przemyslaw.kitszel@...el.com>
To: "Kaplan, David" <David.Kaplan@....com>, "jedrzej.jagielski@...el.com"
	<jedrzej.jagielski@...el.com>
CC: "anthony.l.nguyen@...el.com" <anthony.l.nguyen@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>, "horms@...nel.org"
	<horms@...nel.org>, Mateusz Polchlopek <mateusz.polchlopek@...el.com>,
	Bharath R <bharath.r@...el.com>, "regressions@...ts.linux.dev"
	<regressions@...ts.linux.dev>, "intel-wired-lan@...ts.osuosl.org"
	<intel-wired-lan@...ts.osuosl.org>
Subject: Re: [REGRESSION] ixgbe broken after devlink support patch

On 6/16/25 21:42, Kaplan, David wrote:
> [AMD Official Use Only - AMD Internal Distribution Only]
> 
> Hi,
> 
> My "Ethernet controller: Intel Corporation Ethernet Controller 10G X550T (rev 01)" device stopped working on recent kernel builds (fails to show up in 'ifconfig' or to get an IP address).  I bisected the failure down to the following commit:
> 
> commit a0285236ab93fdfdd1008afaa04561d142d6c276 (HEAD, refs/bisect/bad)
> Author: Jedrzej Jagielski <jedrzej.jagielski@...el.com>
> Date:   Thu Apr 10 14:59:56 2025 +0200
> 
>      ixgbe: add initial devlink support

[..]

> Normally, the device is given a name like enp194s0f0 and connects to the wired network.  

now the name is likely to be different, please see this thread:
https://lkml.org/lkml/2025/4/24/1750

Is it possible that your network setup script has some part of interface
discovery hardcoded?

> Starting with this patch, it fails to do so.  I'm not familiar with how to debug this particular device, so please let me know what other information would be of assistance.
> 
> lspci -vv information (on a working build):
> 
> c2:00.0 Ethernet controller: Intel Corporation Ethernet Controller 10G X550T (rev 01)
>          Subsystem: ASRock Incorporation Ethernet Controller 10G X550T
>          Physical Slot: 0-1
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 0
>          Interrupt: pin A routed to IRQ 77
>          IOMMU group: 12
>          Region 0: Memory at 18020800000 (64-bit, prefetchable) [size=4M]
>          Region 4: Memory at 18020c04000 (64-bit, prefetchable) [size=16K]
>          Expansion ROM at b6000000 [disabled] [size=512K]
>          Capabilities: <access denied>
>          Kernel driver in use: ixgbe
>          Kernel modules: ixgbe
> 
> Thanks --David Kaplan
> 
>