netdev - Re: [PATCH v5 09/21] IB/hns: Add hca support

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Date:	Tue, 3 May 2016 16:39:45 +0800
From:	"Wei Hu (Xavier)" <xavier.huwei@...wei.com>
To:	Or Gerlitz <gerlitz.or@...il.com>
CC:	oulijun <oulijun@...wei.com>, Jiri Pirko <jiri@...nulli.us>,
	Doug Ledford <dledford@...hat.com>,
	"Hefty, Sean" <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	David Miller <davem@...emloft.net>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jiri Pirko <jiri@...lanox.com>,
	Or Gerlitz <ogerlitz@...lanox.com>, <linuxarm@...wei.com>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linux Netdev List <netdev@...r.kernel.org>,
	<gongyangming@...wei.com>, <xiaokun@...wei.com>,
	<tangchaofei@...wei.com>, <haifeng.wei@...wei.com>,
	<yisen.zhuang@...wei.com>, <yankejian@...wei.com>,
	<lisheng011@...wei.com>, <charles.chenxin@...wei.com>
Subject: Re: [PATCH v5 09/21] IB/hns: Add hca support



On 2016/5/3 16:14, Or Gerlitz wrote:
> On Tue, May 3, 2016 at 10:57 AM, Wei Hu (Xavier)
> <xavier.huwei@...wei.com> wrote:
>> On 2016/4/30 12:33, Or Gerlitz wrote:
>
>>> Can you elaborate what design aspects in the driver or anywhere else
>>> should impose that limitation?
>> 1.  Oulijun resolved the problem, and sent PATCH V6 on 2016-4-28. Thanks for
>> more comments.
> V6 still conditions things on ARM
>
>
>> 2.  This driver for Hisilicon RoCE Engine run in ARM SoCs.
>> The Hisilicon Network Subsystem is a long term evolution IP which is
>> supposed to be used in Hisilicon ICT SoCs. HNS(Hisilicon Network Subsystem)
>> has a hardware support of performing RDMA with RoCE engine.
> I understand that the HW is targeted just for ARM environments. Is
> this the reason
> why you want to impose this build limitation or there's something in
> the driver design
> or code that is not going to work in other environments?
yes.

Regards
Wei Hu
>
>> This Kconfig related with this driver as below:
>>
>> config INFINIBAND_HISILICON_HNS
>>      tristate "Hisilicon Hns ROCE Driver"
>>      depends on NET_VENDOR_HISILICON
>>      depends on ARM64 && HNS && HNS_DSAF && HNS_ENET
> this is understood, my question came to better understand the limitations
>
> .
>