Hi,

if I leave the mlx4ib device out of the kernel (i.e., only compile in mlxen), 
doing the sysctl switch to Ethernet mode works fine.

Lars

On 2014-1-20, at 13:08, Eggert, Lars <l...@netapp.com> wrote:

> Hi,
> 
> On 2013-7-9, at 22:08, John Nielsen <li...@jnielsen.net> wrote:
> On Jul 9, 2013, at 9:58 AM, John Baldwin <j...@freebsd.org> wrote:
>>> So this was just fixed (finally) in HEAD in r253048.  You can how use the
>>> sysctls to change this.
>> 
>> I saw the commit. Thanks! I'll give it a try at some point (whenever my 
>> schedule and hardware availability align).
> 
> is this supposed to work at the moment? When I try, the machine seems to 
> crash:
> 
> root@one:~ # sysctl sys.device.mlx4_core0.mlx4_port1=eth
> sys.device.mlx4_core0.mlx4_port1: auto (ib)
> Write failed: Broken pipe
> Shared connection to xxx closed.
> 
> Unfortunately I don't have serial console access at the moment, so I can't 
> access any messages that may have gotten dumped.
> 
> The cards in question are:
> 
> mlx4_core0@pci0:17:0:0:       class=0x028000 card=0x005015b3 chip=0x100315b3 
> rev=0x00 hdr=0x00
>    vendor     = 'Mellanox Technologies'
>    device     = 'MT27500 Family [ConnectX-3]'
>    class      = network
> 
> Lars

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