59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/*
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* Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
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*/
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#include <rdma/ib_user_verbs.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/uverbs_types.h>
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#include <rdma/uverbs_ioctl.h>
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#include <rdma/mlx5_user_ioctl_cmds.h>
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#include <rdma/ib_umem.h>
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#include <linux/mlx5/driver.h>
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#include <linux/mlx5/fs.h>
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#include "mlx5_ib.h"
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int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
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{
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u32 in[MLX5_ST_SZ_DW(create_uctx_in)] = {0};
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u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)] = {0};
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u64 general_obj_types;
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void *uctx;
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void *hdr;
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int err;
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uctx = MLX5_ADDR_OF(create_uctx_in, in, uctx);
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hdr = MLX5_ADDR_OF(create_uctx_in, in, hdr);
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general_obj_types = MLX5_CAP_GEN_64(dev->mdev, general_obj_types);
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if (!(general_obj_types & MLX5_GENERAL_OBJ_TYPES_CAP_UCTX) ||
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!(general_obj_types & MLX5_GENERAL_OBJ_TYPES_CAP_UMEM))
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return -EINVAL;
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if (!capable(CAP_NET_RAW))
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return -EPERM;
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MLX5_SET(general_obj_in_cmd_hdr, hdr, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
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MLX5_SET(general_obj_in_cmd_hdr, hdr, obj_type, MLX5_OBJ_TYPE_UCTX);
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err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
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if (err)
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return err;
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context->devx_uid = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
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return 0;
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}
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void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev,
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struct mlx5_ib_ucontext *context)
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{
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u32 in[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)] = {0};
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u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)] = {0};
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MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
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MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_OBJ_TYPE_UCTX);
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MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, context->devx_uid);
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mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
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}
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