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mlx5dv_get_data_direct_sysfs_path(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | RETURN VALUE | ERRORS | NOTES | SEE ALSO | AUTHOR | COLOPHON 

mlx5dv_get_data_direct_sysfs_path(3) mlx5dv_get_data_direct_sysfs_path(3)

NAME         top

       mlx5dv_get_data_direct_sysfs_path - Get the sysfs path of a data
       direct device

SYNOPSIS         top

              #include <infiniband/mlx5dv.h>

              int mlx5dv_get_data_direct_sysfs_path(struct ibv_context *context, char *buf,
                                                    size_t buf_len)

DESCRIPTION         top

       Get the sysfs path of the data direct device that is associated
       with the given context.

       This lets an application to discover whether/which data direct
       device is associated with the given context.

ARGUMENTS         top

       context
              RDMA device context to work on.

       buf    The buffer where to place the sysfs path of the associated
              data direct device.

       buf_len

              The length of the buffer.

RETURN VALUE         top

       Upon success 0 is returned or the value of errno on a failure.

ERRORS         top

       The below specific error values should be considered.

       ENODEV

              There is no associated data direct device for the given *context*.

       ENOSPC

              The input buffer size is too small to hold the full sysfs path.

NOTES         top

       Upon succees, the caller should add the /sys/ prefix to get the
       full sysfs path.

SEE ALSO         top

       mlx5dv_reg_dmabuf_mr(3)

AUTHOR         top

       Yishai Hadas ⟨yishaih@nvidia.com⟩

COLOPHON         top

       This page is part of the rdma-core (RDMA Core Userspace Libraries
       and Daemons) project.  Information about the project can be found
       at ⟨https://github.com/linux-rdma/rdma-core⟩.  If you have a bug
       report for this manual page, send it to
       linux-rdma@vger.kernel.org.  This page was obtained from the
       project's upstream Git repository
       ⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2025-08-04.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there is
       a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

                                     mlx5dv_get_data_direct_sysfs_path(3)

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