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Date:      Thu, 13 Jul 2017 00:11:43 -0400
From:      James Jernigan <jwjerni@g.clemson.edu>
To:        freebsd-net@freebsd.org
Subject:   ixv driver 12.0 crash in AWS
Message-ID:  <CAK6pMswaS62v8%2BBBDP667yKuruSOjsNEm0k4GZWG6a%2BADwBBHA@mail.gmail.com>

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Hey freebsd net,

I have created a few instances in AWS using the lastest AMI for the CURRENT
branch:
FreeBSD 12.0-CURRENT-amd64-2017-07-11 (ami-847b7992)

A couple of these have started up just fine, but the rest of the instances
are inaccessible due to the network driver crashing on startup and
rendering the machines inaccessible by SSH. I have one working instance,
but even creating more based off of that configuration are failing to start
networking properly. Restarting the instances does not fix the problem. I
have pulled the following logs from the AWS web console for two m4.10xlarge
instances with the same configuration and AMI.

Working instance:

> ixv0: <Intel(R) PRO/10GbE Virtual Function Network Driver, Version -
> 1.5.13-k> mem 0xf3000000-0xf3003fff,0xf3004000-0xf3007fff at device 3.0 on
> pci0
> ixv0: Using MSI-X interrupts with 2 vectors
> ixv0: Ethernet address: 0a:2f:e8:85:2f:38
> ixv0: netmap queues/slots: TX 1/1024, RX 1/1024


Malfunctioning instance:

> ixv0: <Intel(R) PRO/10GbE Virtual Function Network Driver, Version -
> 1.5.13-k> mem 0xf3000000-0xf3003fff,0xf3004000-0xf3007fff at device 3.0 on
> pci0
> ixv0: MBX API 1.2 negotiation failed! Error -32


The error appears to be coming from sys/dev/ixgbe/if_ixv.c in the source.
Does this appear to be an AWS specific issue or a more widespread one? Let
me know if I can provide any further information.

Thanks,
James



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