// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
// Copyright (c) 2019 Hisilicon Limited.

#include <rdma/rdma_cm.h>
#include <rdma/restrack.h>
#include <uapi/rdma/rdma_netlink.h>
#include "hns_roce_common.h"
#include "hns_roce_device.h"
#include "hns_roce_hw_v2.h"

int hns_roce_fill_res_cq_entry(struct sk_buff *msg, struct ib_cq *ib_cq)
{
        struct hns_roce_cq *hr_cq = to_hr_cq(ib_cq);
        struct nlattr *table_attr;

        table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
        if (!table_attr)
                return -EMSGSIZE;

        if (rdma_nl_put_driver_u32(msg, "cq_depth", hr_cq->cq_depth))
                goto err;

        if (rdma_nl_put_driver_u32(msg, "cons_index", hr_cq->cons_index))
                goto err;

        if (rdma_nl_put_driver_u32(msg, "cqe_size", hr_cq->cqe_size))
                goto err;

        if (rdma_nl_put_driver_u32(msg, "arm_sn", hr_cq->arm_sn))
                goto err;

        nla_nest_end(msg, table_attr);

        return 0;

err:
        nla_nest_cancel(msg, table_attr);

        return -EMSGSIZE;
}

int hns_roce_fill_res_cq_entry_raw(struct sk_buff *msg, struct ib_cq *ib_cq)
{
        struct hns_roce_dev *hr_dev = to_hr_dev(ib_cq->device);
        struct hns_roce_cq *hr_cq = to_hr_cq(ib_cq);
        struct hns_roce_v2_cq_context context;
        int ret;

        if (!hr_dev->hw->query_cqc)
                return -EINVAL;

        ret = hr_dev->hw->query_cqc(hr_dev, hr_cq->cqn, &context);
        if (ret)
                return ret;

        ret = nla_put(msg, RDMA_NLDEV_ATTR_RES_RAW, sizeof(context), &context);

        return ret;
}

int hns_roce_fill_res_qp_entry(struct sk_buff *msg, struct ib_qp *ib_qp)
{
        struct hns_roce_qp *hr_qp = to_hr_qp(ib_qp);
        struct nlattr *table_attr;

        table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
        if (!table_attr)
                return -EMSGSIZE;

        if (rdma_nl_put_driver_u32_hex(msg, "sq_wqe_cnt", hr_qp->sq.wqe_cnt))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "sq_max_gs", hr_qp->sq.max_gs))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "rq_wqe_cnt", hr_qp->rq.wqe_cnt))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "rq_max_gs", hr_qp->rq.max_gs))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "ext_sge_sge_cnt", hr_qp->sge.sge_cnt))
                goto err;

        nla_nest_end(msg, table_attr);

        return 0;

err:
        nla_nest_cancel(msg, table_attr);

        return -EMSGSIZE;
}

int hns_roce_fill_res_qp_entry_raw(struct sk_buff *msg, struct ib_qp *ib_qp)
{
        struct hns_roce_dev *hr_dev = to_hr_dev(ib_qp->device);
        struct hns_roce_qp *hr_qp = to_hr_qp(ib_qp);
        struct hns_roce_full_qp_ctx {
                struct hns_roce_v2_qp_context qpc;
                struct hns_roce_v2_scc_context sccc;
        } context = {};
        u32 sccn = hr_qp->qpn;
        int ret;

        if (!hr_dev->hw->query_qpc)
                return -EINVAL;

        ret = hr_dev->hw->query_qpc(hr_dev, hr_qp->qpn, &context.qpc);
        if (ret)
                return ret;

        /* If SCC is disabled or the query fails, the queried SCCC will
         * be all 0.
         */
        if (!(hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_QP_FLOW_CTRL) ||
            !hr_dev->hw->query_sccc)
                goto out;

        if (hr_qp->cong_type == CONG_TYPE_DIP) {
                if (!hr_qp->dip)
                        goto out;
                sccn = hr_qp->dip->dip_idx;
        }

        ret = hr_dev->hw->query_sccc(hr_dev, sccn, &context.sccc);
        if (ret)
                ibdev_warn_ratelimited(&hr_dev->ib_dev,
                                       "failed to query SCCC, ret = %d.\n",
                                       ret);

out:
        ret = nla_put(msg, RDMA_NLDEV_ATTR_RES_RAW, sizeof(context), &context);

        return ret;
}

int hns_roce_fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ib_mr)
{
        struct hns_roce_mr *hr_mr = to_hr_mr(ib_mr);
        struct nlattr *table_attr;

        table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
        if (!table_attr)
                return -EMSGSIZE;

        if (rdma_nl_put_driver_u32_hex(msg, "pbl_hop_num", hr_mr->pbl_hop_num))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "ba_pg_shift",
                                       hr_mr->pbl_mtr.hem_cfg.ba_pg_shift))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "buf_pg_shift",
                                       hr_mr->pbl_mtr.hem_cfg.buf_pg_shift))
                goto err;

        nla_nest_end(msg, table_attr);

        return 0;

err:
        nla_nest_cancel(msg, table_attr);

        return -EMSGSIZE;
}

int hns_roce_fill_res_mr_entry_raw(struct sk_buff *msg, struct ib_mr *ib_mr)
{
        struct hns_roce_dev *hr_dev = to_hr_dev(ib_mr->device);
        struct hns_roce_mr *hr_mr = to_hr_mr(ib_mr);
        struct hns_roce_v2_mpt_entry context;
        int ret;

        if (!hr_dev->hw->query_mpt)
                return -EINVAL;

        ret = hr_dev->hw->query_mpt(hr_dev, hr_mr->key, &context);
        if (ret)
                return ret;

        ret = nla_put(msg, RDMA_NLDEV_ATTR_RES_RAW, sizeof(context), &context);

        return ret;
}

int hns_roce_fill_res_srq_entry(struct sk_buff *msg, struct ib_srq *ib_srq)
{
        struct hns_roce_srq *hr_srq = to_hr_srq(ib_srq);
        struct nlattr *table_attr;

        table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
        if (!table_attr)
                return -EMSGSIZE;

        if (rdma_nl_put_driver_u32_hex(msg, "srqn", hr_srq->srqn))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "wqe_cnt", hr_srq->wqe_cnt))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "max_gs", hr_srq->max_gs))
                goto err;

        if (rdma_nl_put_driver_u32_hex(msg, "xrcdn", hr_srq->xrcdn))
                goto err;

        nla_nest_end(msg, table_attr);

        return 0;

err:
        nla_nest_cancel(msg, table_attr);
        return -EMSGSIZE;
}

int hns_roce_fill_res_srq_entry_raw(struct sk_buff *msg, struct ib_srq *ib_srq)
{
        struct hns_roce_dev *hr_dev = to_hr_dev(ib_srq->device);
        struct hns_roce_srq *hr_srq = to_hr_srq(ib_srq);
        struct hns_roce_srq_context context;
        int ret;

        if (!hr_dev->hw->query_srqc)
                return -EINVAL;

        ret = hr_dev->hw->query_srqc(hr_dev, hr_srq->srqn, &context);
        if (ret)
                return ret;

        ret = nla_put(msg, RDMA_NLDEV_ATTR_RES_RAW, sizeof(context), &context);

        return ret;
}