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mlx5dv_devx_query_eqn(3) — Linux manual page

mlx5dv_devx_query_eqn(3)mlx5dv_devx_query_eqn(3)

NAME        top

       mlx5dv_devx_query_eqn - Query EQN for a given vector id.

SYNOPSIS        top

              #include <infiniband/mlx5dv.h>              int mlx5dv_devx_query_eqn(struct ibv_context *context, uint32_t vector,                                        uint32_t *eqn);

DESCRIPTION        top

       Query EQN for a given input vector, the EQN is needed for other       device commands over the DEVX interface.       The DEVX API enables direct access from the user space area to the       mlx5 device driver, the EQN information is needed for few commands       such as CQ creation.

ARGUMENTS        top

context              RDMA device context to work on.vector Completion vector number.eqn    The device EQ number which relates to the given input              vector.

RETURN VALUE        top

       returns 0 on success, or the value of errno on failure (which       indicates the failure reason).

SEE ALSO        top

mlx5dv_open_device,mlx5dv_devx_obj_create       #AUTHOR       Yishai Hadas ⟨yishaih@mellanox.com⟩

COLOPHON        top

       This page is part of therdma-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 isnot part of the original manual page), send a mail to       man-pages@man7.orgmlx5dv_devx_query_eqn(3)

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