mlx5dv_open_device - Man Page

Open an RDMA device context for the mlx5 provider

Synopsis

#include <infiniband/mlx5dv.h>

struct ibv_context *
mlx5dv_open_device(struct ibv_device *device, struct mlx5dv_context_attr *attr);

Open an RDMA device context with specific mlx5 provider attributes.

attr

struct mlx5dv_context_attr {
        uint32_t flags;
        uint64_t comp_mask;
        struct ibv_fd_arr *fds;
};

flags

A bitwise OR of the various values described below.

*MLX5DV_CONTEXT_FLAGS_DEVX*:
Allocate a DEVX context

comp_mask

Bitmask specifying what fields in the structure are valid

*MLX5DV_CONTEXT_ATTR_MASK_FD_ARRAY*:
Valid value in *fds*

fds

Used to pass a file descriptor array.

struct ibv_fd_arr {
        int *arr;
        uint32_t count;
};

Returns a pointer to the allocated device context, or NULL if the request fails.