lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Thu, 11 Sep 2014 11:56:54 -0400
From:	Santosh Shilimkar <>
To:	David Miller <>
CC:	<>, <>,
	<>, <>,
	<>, <>,
Subject: Re: [PATCH v2 0/3] net: Add Keystone NetCP ethernet driver support


On Monday 08 September 2014 10:41 AM, Santosh Shilimkar wrote:
> Hi Dave,
> On 8/22/14 3:45 PM, Santosh Shilimkar wrote:
>> Hi David,
>> On Thursday 21 August 2014 07:36 PM, David Miller wrote:
>>> From: Santosh Shilimkar <>
>>> Date: Fri, 15 Aug 2014 11:12:39 -0400
>>>> Update version after incorporating David Miller's comment from earlier
>>>> posting [1]. I would like to get these merged for upcoming 3.18 merge
>>>> window if there are no concerns on this version.
>>>> 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.
>>>> NetCP driver has a plug-in module architecture where each of the NetCP
>>>> sub-modules exist as a loadable kernel module which plug in to the netcp
>>>> core. These sub-modules are represented as "netcp-devices" in the dts
>>>> bindings. It is mandatory to have the ethernet switch sub-module for
>>>> the ethernet interface to be operational. Any other sub-module like the
>>>> PA is optional.
>>>> Both GBE and XGBE network processors supported using common driver. It
>>>> is also designed to handle future variants of NetCP.
>>> I don't want to see an offload driver that doesn't plug into the existing
>>> generic frameworks for configuration et al.
>>> If no existing facility exists to support what you need, you must work
>>> with the upstream maintainers to design and create one.
>>> It is absolutely no reasonable for every "switch on a chip" driver to
>>> export it's own configuration knob, we need a standard interface all
>>> such drivers will plug into and provide.
As discussed on other thread, we are dropping the custom exports. I
will be spinning updated version with the exports removed.

And for the future offload support additions, we will plug into
generic frameworks as when they are available.

To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists