mlx5dv_devx_destroy_event_channel(3) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | RETURN VALUE | SEE ALSO | COLOPHON

mlx5dv_devx_cr...y_event_channel(3)   mlx5dv_devx_cr...y_event_channel(3)

NAME         top

       mlx5dv_devx_create_event_channel - Create an event channel to be
       used for DEVX asynchronous events.

       mlx5dv_devx_destroy_event_channel - Destroy a DEVX event channel.

SYNOPSIS         top

              #include <infiniband/mlx5dv.h>

              struct mlx5dv_devx_event_channel {
                  int fd;
              };

              struct mlx5dv_devx_event_channel *
              mlx5dv_devx_create_event_channel(struct ibv_context *context,
                                               enum mlx5dv_devx_create_event_channel_flags flags)

              void mlx5dv_devx_destroy_event_channel(struct mlx5dv_devx_event_channel *event_channel)

DESCRIPTION         top

       Create or destroy a channel to be used for DEVX asynchronous
       events.

       The create verb exposes an mlx5dv_devx_event_channel object that
       can be used to read asynchronous DEVX events.  This lets an
       application to subscribe to get device events and once an event
       occurred read it from this object.

ARGUMENTS         top

       context

              RDMA device context to create the channel on.

       flags  MLX5DV_DEVX_CREATE_EVENT_CHANNEL_FLAGS_OMIT_EV_DATA: omit
              the event data on this channel.

RETURN VALUE         top

       Upon success mlx5dv_devx_create_event_channel will return a new
       struct mlx5dv_devx_event_channel object, on error NULL will be
       returned and errno will be set.

SEE ALSO         top

       mlx5dv_open_device(3), mlx5dv_devx_obj_create(3)

       #AUTHOR

       Yishai Hadas ⟨yishaih@mellanox.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_devx_cr...y_event_channel(3)