netdev - Re: [PATCH] vlan: conditional inclusion of FCoE hooks to match netdevice.h and bnx2x

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Date:   Thu, 04 Apr 2019 17:18:51 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     cleech@...hat.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH] vlan: conditional inclusion of FCoE hooks to match
 netdevice.h and bnx2x

From: Chris Leech <cleech@...hat.com>
Date: Tue,  2 Apr 2019 15:06:12 -0700

> Way back in 3c9c36bcedd426f2be2826da43e5163de61735f7 the
> ndo_fcoe_get_wwn pointer was switched from depending on CONFIG_FCOE to
> CONFIG_LIBFCOE in order to allow building FCoE support into the bnx2x
> driver and used by bnx2fc without including the generic software fcoe
> module.
> 
> But, FCoE is generally used over an 802.1q VLAN, and the implementation
> of ndo_fcoe_get_wwn in the 8021q module was not similarly changed.  The
> result is that if CONFIG_FCOE is disabled, then bnz2fc cannot make a
> call to ndo_fcoe_get_wwn through the 8021q interface to the underlying
> bnx2x interface.  The bnx2fc driver then falls back to a potentially
> different mapping of Ethernet MAC to Fibre Channel WWN, creating an
> incompatibility with the fabric and target configurations when compared
> to the WWNs used by pre-boot firmware and differently-configured
> kernels.
> 
> So make the conditional inclusion of FCoE code in 8021q match the
> conditional inclusion in netdevice.h
> 
> Signed-off-by: Chris Leech <cleech@...hat.com>

Applied, thanks Chris.