drivers/infiniband/hw/hns/hns_roce_restrack.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 // Copyright (c) 2019 Hisilicon Limited.
   3
   4 #include <rdma/rdma_cm.h>
   5 #include <rdma/restrack.h>
   6 #include <uapi/rdma/rdma_netlink.h>
   7 #include "hnae3.h"
   8 #include "hns_roce_common.h"
   9 #include "hns_roce_device.h"
  10 #include "hns_roce_hw_v2.h"
  11
  12 static int hns_roce_fill_cq(struct sk_buff *msg,
  13                             struct hns_roce_v2_cq_context *context)
  14 {
  15         if (rdma_nl_put_driver_u32(msg, "state",
  16                                    roce_get_field(context->byte_4_pg_ceqn,
  17                                                   V2_CQC_BYTE_4_ARM_ST_M,
  18                                                   V2_CQC_BYTE_4_ARM_ST_S)))
  19                 goto err;
  20
  21         if (rdma_nl_put_driver_u32(msg, "ceqn",
  22                                    roce_get_field(context->byte_4_pg_ceqn,
  23                                                   V2_CQC_BYTE_4_CEQN_M,
  24                                                   V2_CQC_BYTE_4_CEQN_S)))
  25                 goto err;
  26
  27         if (rdma_nl_put_driver_u32(msg, "cqn",
  28                                    roce_get_field(context->byte_8_cqn,
  29                                                   V2_CQC_BYTE_8_CQN_M,
  30                                                   V2_CQC_BYTE_8_CQN_S)))
  31                 goto err;
  32
  33         if (rdma_nl_put_driver_u32(msg, "hopnum",
  34                                    roce_get_field(context->byte_16_hop_addr,
  35                                                   V2_CQC_BYTE_16_CQE_HOP_NUM_M,
  36                                                   V2_CQC_BYTE_16_CQE_HOP_NUM_S)))
  37                 goto err;
  38
  39         if (rdma_nl_put_driver_u32(
  40                     msg, "pi",
  41                     roce_get_field(context->byte_28_cq_pi,
  42                                    V2_CQC_BYTE_28_CQ_PRODUCER_IDX_M,
  43                                    V2_CQC_BYTE_28_CQ_PRODUCER_IDX_S)))
  44                 goto err;
  45
  46         if (rdma_nl_put_driver_u32(
  47                     msg, "ci",
  48                     roce_get_field(context->byte_32_cq_ci,
  49                                    V2_CQC_BYTE_32_CQ_CONSUMER_IDX_M,
  50                                    V2_CQC_BYTE_32_CQ_CONSUMER_IDX_S)))
  51                 goto err;
  52
  53         if (rdma_nl_put_driver_u32(
  54                     msg, "coalesce",
  55                     roce_get_field(context->byte_56_cqe_period_maxcnt,
  56                                    V2_CQC_BYTE_56_CQ_MAX_CNT_M,
  57                                    V2_CQC_BYTE_56_CQ_MAX_CNT_S)))
  58                 goto err;
  59
  60         if (rdma_nl_put_driver_u32(
  61                     msg, "period",
  62                     roce_get_field(context->byte_56_cqe_period_maxcnt,
  63                                    V2_CQC_BYTE_56_CQ_PERIOD_M,
  64                                    V2_CQC_BYTE_56_CQ_PERIOD_S)))
  65                 goto err;
  66
  67         if (rdma_nl_put_driver_u32(msg, "cnt",
  68                                    roce_get_field(context->byte_52_cqe_cnt,
  69                                                   V2_CQC_BYTE_52_CQE_CNT_M,
  70                                                   V2_CQC_BYTE_52_CQE_CNT_S)))
  71                 goto err;
  72
  73         return 0;
  74
  75 err:
  76         return -EMSGSIZE;
  77 }
  78
  79 static int hns_roce_fill_res_cq_entry(struct sk_buff *msg,
  80                                       struct rdma_restrack_entry *res)
  81 {
  82         struct ib_cq *ib_cq = container_of(res, struct ib_cq, res);
  83         struct hns_roce_dev *hr_dev = to_hr_dev(ib_cq->device);
  84         struct hns_roce_cq *hr_cq = to_hr_cq(ib_cq);
  85         struct hns_roce_v2_cq_context *context;
  86         struct nlattr *table_attr;
  87         int ret;
  88
  89         if (!hr_dev->dfx->query_cqc_info)
  90                 return -EINVAL;
  91
  92         context = kzalloc(sizeof(struct hns_roce_v2_cq_context), GFP_KERNEL);
  93         if (!context)
  94                 return -ENOMEM;
  95
  96         ret = hr_dev->dfx->query_cqc_info(hr_dev, hr_cq->cqn, (int *)context);
  97         if (ret)
  98                 goto err;
  99
 100         table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
 101         if (!table_attr) {
 102                 ret = -EMSGSIZE;
 103                 goto err;
 104         }
 105
 106         if (hns_roce_fill_cq(msg, context)) {
 107                 ret = -EMSGSIZE;
 108                 goto err_cancel_table;
 109         }
 110
 111         nla_nest_end(msg, table_attr);
 112         kfree(context);
 113
 114         return 0;
 115
 116 err_cancel_table:
 117         nla_nest_cancel(msg, table_attr);
 118 err:
 119         kfree(context);
 120         return ret;
 121 }
 122
 123 int hns_roce_fill_res_entry(struct sk_buff *msg,
 124                             struct rdma_restrack_entry *res)
 125 {
 126         if (res->type == RDMA_RESTRACK_CQ)
 127                 return hns_roce_fill_res_cq_entry(msg, res);
 128
 129         return 0;
 130 }