diff options
Diffstat (limited to 'drivers/infiniband/hw/mlx5/restrack.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/restrack.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/restrack.c b/drivers/infiniband/hw/mlx5/restrack.c new file mode 100644 index 0000000000..4ac429e720 --- /dev/null +++ b/drivers/infiniband/hw/mlx5/restrack.c @@ -0,0 +1,179 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* + * Copyright (c) 2019-2020, Mellanox Technologies Ltd. All rights reserved. + */ + +#include <uapi/rdma/rdma_netlink.h> +#include <linux/mlx5/rsc_dump.h> +#include <rdma/ib_umem_odp.h> +#include <rdma/restrack.h> +#include "mlx5_ib.h" +#include "restrack.h" + +#define MAX_DUMP_SIZE 1024 + +static int dump_rsc(struct mlx5_core_dev *dev, enum mlx5_sgmt_type type, + int index, void *data, int *data_len) +{ + struct mlx5_core_dev *mdev = dev; + struct mlx5_rsc_dump_cmd *cmd; + struct mlx5_rsc_key key = {}; + struct page *page; + int offset = 0; + int err = 0; + int cmd_err; + int size; + + page = alloc_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + key.size = PAGE_SIZE; + key.rsc = type; + key.index1 = index; + key.num_of_obj1 = 1; + + cmd = mlx5_rsc_dump_cmd_create(mdev, &key); + if (IS_ERR(cmd)) { + err = PTR_ERR(cmd); + goto free_page; + } + + do { + cmd_err = mlx5_rsc_dump_next(mdev, cmd, page, &size); + if (cmd_err < 0 || size + offset > MAX_DUMP_SIZE) { + err = cmd_err; + goto destroy_cmd; + } + memcpy(data + offset, page_address(page), size); + offset += size; + } while (cmd_err > 0); + *data_len = offset; + +destroy_cmd: + mlx5_rsc_dump_cmd_destroy(cmd); +free_page: + __free_page(page); + return err; +} + +static int fill_res_raw(struct sk_buff *msg, struct mlx5_ib_dev *dev, + enum mlx5_sgmt_type type, u32 key) +{ + int len = 0; + void *data; + int err; + + data = kzalloc(MAX_DUMP_SIZE, GFP_KERNEL); + if (!data) + return -ENOMEM; + + err = dump_rsc(dev->mdev, type, key, data, &len); + if (err) + goto out; + + err = nla_put(msg, RDMA_NLDEV_ATTR_RES_RAW, len, data); +out: + kfree(data); + return err; +} + +static int fill_stat_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr) +{ + struct mlx5_ib_mr *mr = to_mmr(ibmr); + struct nlattr *table_attr; + + if (!(mr->access_flags & IB_ACCESS_ON_DEMAND)) + return 0; + + table_attr = nla_nest_start(msg, + RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); + + if (!table_attr) + goto err; + + if (rdma_nl_stat_hwcounter_entry(msg, "page_faults", + atomic64_read(&mr->odp_stats.faults))) + goto err_table; + if (rdma_nl_stat_hwcounter_entry( + msg, "page_invalidations", + atomic64_read(&mr->odp_stats.invalidations))) + goto err_table; + if (rdma_nl_stat_hwcounter_entry(msg, "page_prefetch", + atomic64_read(&mr->odp_stats.prefetch))) + goto err_table; + + nla_nest_end(msg, table_attr); + return 0; + +err_table: + nla_nest_cancel(msg, table_attr); +err: + return -EMSGSIZE; +} + +static int fill_res_mr_entry_raw(struct sk_buff *msg, struct ib_mr *ibmr) +{ + struct mlx5_ib_mr *mr = to_mmr(ibmr); + + return fill_res_raw(msg, mr_to_mdev(mr), MLX5_SGMT_TYPE_PRM_QUERY_MKEY, + mlx5_mkey_to_idx(mr->mmkey.key)); +} + +static int fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr) +{ + struct mlx5_ib_mr *mr = to_mmr(ibmr); + struct nlattr *table_attr; + + if (!(mr->access_flags & IB_ACCESS_ON_DEMAND)) + return 0; + + table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER); + if (!table_attr) + goto err; + + if (mr->is_odp_implicit) { + if (rdma_nl_put_driver_string(msg, "odp", "implicit")) + goto err; + } else { + if (rdma_nl_put_driver_string(msg, "odp", "explicit")) + goto err; + } + + nla_nest_end(msg, table_attr); + return 0; + +err: + nla_nest_cancel(msg, table_attr); + return -EMSGSIZE; +} + +static int fill_res_cq_entry_raw(struct sk_buff *msg, struct ib_cq *ibcq) +{ + struct mlx5_ib_dev *dev = to_mdev(ibcq->device); + struct mlx5_ib_cq *cq = to_mcq(ibcq); + + return fill_res_raw(msg, dev, MLX5_SGMT_TYPE_PRM_QUERY_CQ, cq->mcq.cqn); +} + +static int fill_res_qp_entry_raw(struct sk_buff *msg, struct ib_qp *ibqp) +{ + struct mlx5_ib_dev *dev = to_mdev(ibqp->device); + + return fill_res_raw(msg, dev, MLX5_SGMT_TYPE_PRM_QUERY_QP, + ibqp->qp_num); +} + +static const struct ib_device_ops restrack_ops = { + .fill_res_cq_entry_raw = fill_res_cq_entry_raw, + .fill_res_mr_entry = fill_res_mr_entry, + .fill_res_mr_entry_raw = fill_res_mr_entry_raw, + .fill_res_qp_entry_raw = fill_res_qp_entry_raw, + .fill_stat_mr_entry = fill_stat_mr_entry, +}; + +int mlx5_ib_restrack_init(struct mlx5_ib_dev *dev) +{ + ib_set_device_ops(&dev->ib_dev, &restrack_ops); + return 0; +} |