netdev - Re: [PATCH] bonding: move ipoib_header

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Date:	Tue, 25 Nov 2014 13:44:50 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	jay.vosburgh@...onical.com
Cc:	ogerlitz@...lanox.com, wen.gang.wang@...cle.com,
	netdev@...r.kernel.org, linux-rdma@...r.kernel.org
Subject: Re: [PATCH] bonding: move ipoib_header_ops to vmlinux

From: Jay Vosburgh <jay.vosburgh@...onical.com>
Date: Tue, 25 Nov 2014 10:41:17 -0800

> Or Gerlitz <ogerlitz@...lanox.com> wrote:
> 
>>On 11/25/2014 8:07 AM, David Miller wrote:
>>> IPOIB should not work over bonding as it requires that the device
>>> use ARPHRD_ETHER.
>>
>>Hi Dave,
>>
>>IPoIB devices can be enslaved to both bonding and teaming in their HA mode,
>>the bond device type becomes ARPHRD_INFINIBAND when this happens.
> 
> 	The point was that pktgen disallows ARPHRD_INFINIBAND, not that
> bonding does.
> 
> 	Pktgen specifically checks for type != ARPHRD_ETHER, so the
> IPoIB bond should not be able to be used with pkgten.  My suspicion is
> that pktgen is being configured on the bond first, then an IPoIB slave
> is added to the bond; this would change its type in a way that pktgen
> wouldn't notice.

+1
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