netdev - Re: [Intel-wired-lan] The difference between linux kernel driver and FreeBSD's with Intel X533

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Date: Tue, 10 Oct 2023 03:39:46 +0300
From: Skyler Mäntysaari <sm+lists@...m.fi>
To: "Jesse Brandeburg" <jesse.brandeburg@...el.com>
Cc: netdev@...r.kernel.org, intel-wired-lan@...ts.osuosl.org
Subject: Re: [Intel-wired-lan] The difference between linux kernel driver and FreeBSD's
 with Intel X533

On Tue, Oct 10, 2023, at 02:50, Skyler Mäntysaari wrote:
> On Mon, Oct 9, 2023, at 18:33, Jesse Brandeburg wrote:
>> On 10/4/2023 10:08 AM, Skyler Mäntysaari wrote:
>>>>> Hi there,
>>>>>
>>>>> It seems that for reasons unknown to me, my Intel X533 based 10G SFP+
>>>>> doesn't want to work with kernel 6.1.55 in VyOS 1.4 nor Debian 12 but
>>>>> it does in OPNsense which is based on FreeBSD 13.2.
>>>>>
>>>>> How would I go about debugging this properly? Both sides see light,
>>>>> but no link unless I'm using FreeBSD.
>>> https://forum.vyos.io/t/10g-sfp-trouble-with-linking-intel-x553/12253/11?u=samip537
>>
>> Hi Skyler,
>>
>> Response from Intel team:
>>
>> In the ethtool -m output pasted I see TX and RX optical power is fine.
>> Could you request fault status on both sides? Just want to check if link
>> is down because we are at local-fault or link partner is at local-fault.
>>
>> rmmod ixgbe
>> modprobe ixgbe
>> ethtool -S eth0 | grep fault
>>
>> Since it is 10G, if our side TX is ON (power level says it is) then we
>> should expect link partner RX to be locked so cannot be at Local Fault.
>>
>> Skyler, please gather that ethtool -S data for us.
>>
>> Jesse
>>
>>
>>
>> 
>
> Hi Jesse,
>
> As the other side of the link is an Juniper, I'm not quite sure how I 
> would gather the same data from it as it doesn't have ethtool?
>
> I have also somewhat given up hope on it working on VyOS and instead I 
> am using OPNsense for the moment but I still have VyOS installed as 
> well.
>
> Skyler

Hi Jesse,

I did verify that the grep doesn't yield any results on the VyOS box and all of the data returned has an value of 0. Paste of which is here: https://p.kapsi.fi/?4a82cedb4f4801ec#DcEgFMFK7cH13EqypsY4ZaHS5taeA1zXevmmTSVW3P9x

I really think something weird is going on with the driver in Linux as otherwise the same exact config on Juniper wouldn't work there either. The VyOS box also says that it's unable to modify autoneg settings, or speed/duplex of the interface.

Skyler