netdev - Re: [PATCH 1/3] infiniband: IB/hns: add Hisilicon RoCE support

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Date:	Wed, 16 Mar 2016 18:23:10 +0800
From:	oulijun <oulijun@...wei.com>
To:	Jiri Pirko <jiri@...nulli.us>
CC:	<dledford@...hat.com>, <sean.hefty@...el.com>,
	<hal.rosenstock@...il.com>, <davem@...emloft.net>,
	<jeffrey.t.kirsher@...el.com>, <jiri@...lanox.com>,
	<ogerlitz@...lanox.com>, <linux-rdma@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <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>,
	<linuxarm@...wei.com>
Subject: Re: [PATCH 1/3] infiniband: IB/hns: add Hisilicon RoCE support

Hi Jiri Pirko, thanks your reviewing.
sorry, I will send a new patch according to your reviews.

On 2016/3/11 18:42, Jiri Pirko wrote:
> Fri, Mar 11, 2016 at 11:37:09AM CET, oulijun@...wei.com wrote:
>> The driver for Hisilicon RoCE is a platform driver.
>> The driver will support mulitple versions of hardware. Currently only "v1"
>> for hip06 SOC is supported.
>> The driver includes two parts: common driver and hardware-specific
>> operations. hns_roce_v1_hw.c and hns_roce_v1_hw.h are files for
>> hardware-specific operations only for v1 engine, and other files(.c and .h)
>> for common algorithm and common hardware operations
>>
>> Signed-off-by: Lijun Ou <oulijun@...wei.com>
>> Signed-off-by: Wei Hu(Xavier) <xavier.huwei@...wei.com>
>> Signed-off-by: Znlong <zhaonenglong@...wei.com>
> 
> <snip>
> 
> I'm sorry to be nitpicking, but you still have style issues in your
> code. I believe that for newly submitted code, this should be avoided. I
> already pointed that out as a comment to your last version, but you
> ignored it. So again, couple of examples:
> 
>> +struct ib_ah *hns_roce_create_ah(struct ib_pd *ibpd,
>> +					struct ib_ah_attr *ah_attr)
> 
> <snip>	
> 	
>> +	ret = ib_get_cached_gid(ibpd->device, ah_attr->port_num,
>> +			ah_attr->grh.sgid_index, &sgid, &gid_attr);
> 
> <snip>
> 
>> +int hns_roce_bitmap_alloc_range(
>> +					struct hns_roce_bitmap *bitmap,
>> +					int cnt, int align, u32 *obj)
> 
> <snip>
> 
>> +			pages =
>> +				kmalloc(sizeof(*pages) * buf->nbufs,
>> +					GFP_KERNEL);
> 
In v2, I consider that it will violate checkpatch if write as follows
	pages = kmalloc(sizeof(*pages) * buf->nbufs,
			GFP_KERNEL);
so, I continue to have it.
Now, I have used kmalloc_array instead of it. I will send new patch at soon.
Again, i am sorry for my incorrect plan.

> <snip>
> 
>> +		dev_err(dev,
>> +			"CQ alloc.Failed to find cq buf addr.\n");
> 
> <snip>
> 
>> +	resp.qp_tab_size      = hr_dev->caps.num_qps;
> 
> <snip>
> 
>> +		buddy->bits[i] =
>> +			kmalloc(s * sizeof(long), GFP_KERNEL);
> 
> 
> and many, many others similar to this. Please fix this.
> 
> 
> Also, I don't understand why you have "_" prefix for labels:
> 
>> +
>> +_error_failed_register_device:
>> +	hns_roce_engine_uninit(hr_dev);
>> +
>> +_error_failed_engine_init:
>> +	hns_roce_cleanup_bitmap(hr_dev);
>> +
>> +_error_failed_setup_hca:
>> +	hns_roce_cleanup_icm(hr_dev);
>> +
>> +_error_failed_init_icm:
>> +	if (hr_dev->cmd_mod)
>> +		hns_roce_cmd_use_polling(hr_dev);
>> +
>> +_error_failed_use_event:
>> +	hns_roce_cleanup_eq_table(hr_dev);
>> +
>> +_error_failed_eq_tabel:
>> +	hns_roce_cmd_cleanup(hr_dev);
>> +
>> +_error_failed_cmd_init:
>> +	(void)hns_roce_engine_reset(hr_dev, 0);
>> +
>> +_error_failed_reset_engine:
>> +	hns_roce_free_cfg(hr_dev);
>> +
>> +_error_failed_get_cfg:
>> +	ib_dealloc_device(&hr_dev->ib_dev);
>> +
>> +	return ret;
>> +}
> 
> .
>