Re: rge(4) RTL8126 simple testing

On Tue, 24 Mar 2026, Sean C. Farley wrote:

> On Fri, 6 Mar 2026, Adrian Chadd wrote:
>
>> me and when i poke the foundation about it :)
>
> Another point of interest with these NICs.  The one that is connected 
> to the Nokia ONT XS-010X-Q stops functioning at random times, usually 
> days apart.  The interface shows it as up and the ONT looks like it is 
> happy and even blinks showing data is flowing (in at least one 
> direction), but the only packets I see on the NIC are ARP requests for 
> the upstream router.
>
> The other two NICs have not shown this issue.
>
> The resolution is to either bring the NIC down then up or merely 
> changing the options on the NIC.  This makes me suspect it is the NIC 
> at fault but unsure if it is the driver or this particular NIC.  I 
> guess I can swap the NICs around to see if the problem resolves itself 
> or follows the NIC.
>
> One other thing to point out is that this ONT is new, so it could 
> still be the faulty bit.

I have not tested this very long, but there is a possibility that hangs 
were caused by an issue with the bus the one NIC was on.  The comment I 
just added to the issue to update the port 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=294029:

     If anyone becomes curious about the "ClockPM disabled" symptom I
     had, it was due to something going wrong with the PCIe bus
     associated with the CPU.  Removing other cards from slots associated
     with the CPU did not help.  Moving the NIC to a PCH-associated slot
     did.  This should stop the hangs.  It already removed all retries
     seen using iperf against a public server.

     I discovered it after bouncing things off of AI and discovering
     about the "-e" option to pciconf.  "Hmm.  What shows when I provide
     this -e option, to report errors, from the manpage?  Oh!"

     ...
     ecap 0001[100] = AER 2 0 fatal 0 non-fatal 2 corrected
     ecap 0002[148] = VC 1 max VC0
     ecap 0003[170] = Serial 1 01000000684ce000
     ecap 0019[180] = PCIe Sec 1 lane errors 0
     ecap 0017[190] = TPH Requester 1
     ecap 0018[21c] = LTR 1
     ecap 001e[224] = L1 PM Substates 1
     ecap 000b[234] = Vendor [1] ID 0002 Rev 4 Length 256
       PCI-e errors = Correctable Error Detected
                      Unsupported Request Detected
          Corrected = Replay Timer Timeout
                      Advisory Non-Fatal Error

Sean
-- 
[email protected]


>> On Thu, 5 Mar 2026 at 09:05, Sean C. Farley <[email protected]> wrote:
>>> 
>>> On Wed, 4 Mar 2026, Adrian Chadd wrote:
>>> 
>>>> That's all good to know; if the vendor driver / linux driver can't
>>>> negotiate 2.5g then we can try poking realtek directly for help.
>>>> They're more likely to help if reproducible in these drivers.
>>>> 
>>>> -a
>>> 
>>> Just to make sure this is not lost:  Who does the poking and prodding?
>>> While I can do it, I have no idea where.  :)
>>> 
>>> Sean
>>> --
>>> [email protected]
>>> 
>>> 
>>>> On Wed, 4 Mar 2026 at 13:02, Sean C. Farley <[email protected]> wrote:
>>>>> 
>>>>> On Sat, 28 Feb 2026, Sean C. Farley wrote:
>>>>> 
>>>>>> I recently upgraded my home network using a few BrosTrend 5Gb cards
>>>>>> (RTL8126) with 14-STABLE (1eb2beb3686c) and the latest commit
>>>>>> (3170b35) to the GitHub repo for if_rge.  It was either these cards or
>>>>>> a couple of Intel X550-T2 cards, but less power and less heat were the
>>>>>> deciding factors.
>>>>>> 
>>>>>> For the most part, they seem to work very well, except that they
>>>>>> cannot negotiate a 2500Base-T connection.  They can negotiate
>>>>>> 1000baseT and 5000Base-T.  This was with two different cards
>>>>>> connecting to two different devices.  If manually set, they will try
>>>>>> for awhile than fall-back to 1000baseT.
>>>>>> 
>>>>>> One other oddity is that rge0 has "ClockPM disabled", but I have not
>>>>>> looked into that.
>>>>>> 
>>>>>> The networking hardware:
>>>>>> - 3 BrosTrend 5Gb NIC's[1]  (5Gb)
>>>>>> - Zyxel NWA130BE[2]  (2.5Gb port)
>>>>>> - TRENDnet TEG-S591[3]  (connected the NIC to its 10Gb port)
>>>>>> - Nokia ONT XS-010X-Q[4]  (10Gb port)
>
> *snip*
>
>>>>>>  1. https://www.brostrend.com/products/p2
>>>>>>  2. 
>>>>>> https://www.zyxel.com/us/en-us/products/wireless/be11000-6-stream-wifi-7-triple-radio-nebulaflex-access-point-nwa130be
>>>>>>  3. 
>>>>>> https://www.trendnet.com/products/2_5g-10g-switches/9-port-multi-gig-switch-TEG-S591-v1
>>>>>>  4. https://www.nokia.com/asset/210704/