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Date:      Fri, 31 Aug 2018 00:34:58 +0200
From:      Marius Halden <marius.h@lden.org>
To:        Navdeep Parhar <np@FreeBSD.org>, freebsd-net@freebsd.org
Subject:   Re: cxl nic not working after reboot
Message-ID:  <1535668498.3140032.1491908992.2BCDD0B7@webmail.messagingengine.com>
In-Reply-To: <ba998b8e-d54c-667d-b0bb-8a6b7a566f05@FreeBSD.org>
References:  <1535379569.2132387.1487489784.45227861@webmail.messagingengine.com> <20180827151302.GA10167@ox> <1535395530.234212.1487804896.64257978@webmail.messagingengine.com> <1535448912.3229649.1488521184.1EE83C33@webmail.messagingengine.com> <20180829062843.GA25476@ox> <1535538153.459716.1489861176.29777B66@webmail.messagingengine.com> <1535628110.3034153.1491191792.12397BCF@webmail.messagingengine.com> <8bb881ef-a701-1c94-3598-79a2724fa648@FreeBSD.org> <1535665888.3128528.1491873424.5CEF9F3A@webmail.messagingengine.com> <ba998b8e-d54c-667d-b0bb-8a6b7a566f05@FreeBSD.org>

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On Fri, Aug 31, 2018, at 00:14, Navdeep Parhar wrote:
> On 8/30/18 2:51 PM, Marius Halden wrote:
> > On Thu, Aug 30, 2018, at 19:27, Navdeep Parhar wrote:
> >> On 8/30/18 4:21 AM, Marius Halden wrote:
> >>> I tried to downgrade to a the previous bsdrp version we were running =
based on 11.1-RELEASE-p10, but it did not start working again. ifconfig out=
put and t5nex0 devlog follows (non-working state), but it all looks fine to=
 me (media has always been reported wrong). I did notice though that "hw_ma=
c_init_port[0], =E2=80=A6" will always be logged when it works but not when=
 when it doesn't work. I confirmed this on a box still running the old vers=
ion which functions as intended.
> >>>
> >>> The ones not working has a newer firmware version than the ones worki=
ng.
> >>>
> >>> Non-working:
> >>> # sysctl dev.t5nex.0.firmware_version
> >>> dev.t5nex.0.firmware_version: 1.19.1.0
> >>>
> >>>
> >>> Working:
> >>> # sysctl dev.t5nex.0.firmware_version
> >>> dev.t5nex.0.firmware_version: 1.16.45.0
> >>>
> >>> Any other ideas?
> >>>
> >>
> >> I'm still looking into it.  The current working theory is that the peer
> >> is trying to autonegotiate when it shouldn't (it's 1Gbps optics).  If
> >> you know how to disable AN on the peer this should be easy to test.
> >=20
> > Thanks. Unfortunately we don't have access to the peer as that's our IS=
Ps router. According to the sysctl autonegotiate is not supported on our si=
de.
> >=20
>=20
> I'll get a couple of 1G optics in a day or so and then I'll be able to
> try some things for myself.  Wait for that or try a 1G TWINAX (copper)
> SFP+ cable in case you have one -- that should be able to link up (if
> it's really autonegotiation that's causing problems).

We have some 10G TWINAX between our routers which has worked perfectly fine=
 regardless of firmware version on either side. I don't have access to any =
1G TWINAX cables to test with.

--=20
Marius Halden



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