netdev - Re: [PATCH 3/4] infiniband: hns: add Hisilicon RoCE support(driver code)

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Date:	Fri, 4 Mar 2016 15:07:19 +0530
From:	Parav Pandit <pandit.parav@...il.com>
To:	"Wei Hu(Xavier)" <xavier.huwei@...wei.com>
Cc:	Doug Ledford <dledford@...hat.com>,
	"Hefty, Sean" <sean.hefty@...el.com>, hal.rosenstock@...il.com,
	davem@...emloft.net, jeffrey.t.kirsher@...el.com,
	jiri@...lanox.com, Or Gerlitz <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, oulijun@...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 3/4] infiniband: hns: add Hisilicon RoCE support(driver code)

On Fri, Mar 4, 2016 at 2:11 PM, Wei Hu(Xavier) <xavier.huwei@...wei.com> wrote:
> +
> +int hns_roce_register_device(struct hns_roce_dev *hr_dev)
> +{
> +       int ret;
> +       struct hns_roce_ib_iboe *iboe = NULL;
> +       struct ib_device *ib_dev = NULL;
> +       struct device *dev = &hr_dev->pdev->dev;
> +
> +       iboe = &hr_dev->iboe;
> +
> +       ib_dev = &hr_dev->ib_dev;
> +       strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX);
> +
> +       ib_dev->owner                   = THIS_MODULE;
> +       ib_dev->node_type               = RDMA_NODE_IB_CA;
> +       ib_dev->dma_device              = dev;
> +
> +       ib_dev->phys_port_cnt           = hr_dev->caps.num_ports;
> +       ib_dev->local_dma_lkey          = hr_dev->caps.reserved_lkey;
> +       ib_dev->num_comp_vectors        = hr_dev->caps.num_comp_vectors;
> +       ib_dev->uverbs_abi_ver          = 1;
> +       ib_dev->uverbs_cmd_mask         =
> +               (1ULL << IB_USER_VERBS_CMD_GET_CONTEXT) |
> +               (1ULL << IB_USER_VERBS_CMD_QUERY_DEVICE) |
> +               (1ULL << IB_USER_VERBS_CMD_QUERY_PORT) |
> +               (1ULL << IB_USER_VERBS_CMD_ALLOC_PD) |
> +               (1ULL << IB_USER_VERBS_CMD_DEALLOC_PD) |
> +               (1ULL << IB_USER_VERBS_CMD_REG_MR) |
> +               (1ULL << IB_USER_VERBS_CMD_DEREG_MR) |
> +               (1ULL << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
> +               (1ULL << IB_USER_VERBS_CMD_CREATE_CQ) |
> +               (1ULL << IB_USER_VERBS_CMD_DESTROY_CQ) |
> +               (1ULL << IB_USER_VERBS_CMD_CREATE_QP) |
> +               (1ULL << IB_USER_VERBS_CMD_MODIFY_QP) |
> +               (1ULL << IB_USER_VERBS_CMD_QUERY_QP) |
> +               (1ULL << IB_USER_VERBS_CMD_DESTROY_QP);
> +

Since SRQ is not supported in this driver version, can you keep
remaining code base also to not bother about SRQ specifically
poll_cq_one, modify_qp, destroy_qp etc?
SRQ support can come as complete additional patch along with cmd_mask,
callbacks and rest of the code.