linux-kernel - Re: [PATCH net-next v8 0/4] net: Add Keystone NetCP ethernet driver support

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Message-ID: <25883654.BLFxICW9P0@wuerfel>
Date:	Tue, 27 Jan 2015 23:28:42 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Murali Karicheri <m-karicheri2@...com>
Cc:	David Miller <davem@...emloft.net>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v8 0/4] net: Add Keystone NetCP ethernet driver support

On Tuesday 20 January 2015 10:53:36 Murali Karicheri wrote:
> On 01/19/2015 03:11 PM, David Miller wrote:
> > From: Murali Karicheri<m-karicheri2@...com>
> > Date: Thu, 15 Jan 2015 19:10:03 -0500
> >
> >> The Network Coprocessor (NetCP) is a hardware accelerator that processes
> >> Ethernet packets. NetCP has a gigabit Ethernet (GbE) subsystem with a ethernet
> >> switch sub-module to send and receive packets. NetCP also includes a packet
> >> accelerator (PA) module to perform packet classification operations such as
> >> header matching, and packet modification operations such as checksum
> >> generation. NetCP can also optionally include a Security Accelerator(SA)
> >> capable of performing IPSec operations on ingress/egress packets.
> >>
> >> Keystone SoC's also have a 10 Gigabit Ethernet Subsystem (XGbE) which
> >> includes a 3-port Ethernet switch sub-module capable of 10Gb/s and
> >> 1Gb/s rates per Ethernet port.
> >>
> >> Both GBE and XGBE network processors supported using common driver. It
> >> is also designed to handle future variants of NetCP.
> >
> > Series applied to net-next, thanks.
> David,
> 
> Thanks a lot for applying this series. This helps us move forward to 
> work on the next set of patches.

Hi Murali,

Building an ARM 'allmodconfig' kernel now runs into two separate problems
from your driver:

- you have two module_init() instances in one module, which conflict.

- you have two files that are linked into more than one module, so building
  both TI_CPSW and TI_KEYSTONE_NETCP in the same kernel fails.

The answer to both of these is probably to have separate loadable modules,
but you might be able to come up with a different solution.

	Arnd
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