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NAME |SYNOPSIS |DESCRIPTION |ARGUMENTS |NOTES |RETURN VALUE |SEE ALSO |AUTHOR |COLOPHON | |
mlx5dv_devx_create_eq(3) mlx5 Programmer’s Manualmlx5dv_devx_create_eq(3)mlx5dv_devx_create_eq - Create an EQ object mlx5dv_devx_destroy_eq - Destroy an EQ object
#include <infiniband/mlx5dv.h> struct mlx5dv_devx_eq * mlx5dv_devx_create_eq(struct ibv_context *ibctx, const void *in, size_t inlen, void *out, size_t outlen); int mlx5dv_devx_destroy_eq(struct mlx5dv_devx_eq *eq);
Create / Destroy an EQ object. Upon creation, the caller prepares the in/out mail boxes based on the device specification format; For the input mailbox, caller needs to prepare all fields except “eqc.log_page_size” and the pas list, which will be set by the driver. The “eqc.intr” field should be used from the output of mlx5dv_devx_alloc_msi_vector().
ibctx RDMA device context to create the action on.in A buffer which contains the command’s input data provided in a device specification format.inlen The size ofin buffer in bytes.out A buffer which contains the command’s output data according to the device specification format.outlen The size ofout buffer in bytes.eq The EQ object to work on. struct mlx5dv_devx_eq { void *vaddr; };vaddr EQ VA that was allocated in the driver for.mlx5dv_devx_query_eqn() will not support vectors which are used by mlx5dv_devx_create_eq().
Upon successmlx5dv_devx_create_eq will return a newstructmlx5dv_devx_eq; On error NULL will be returned and errno will be set. Upon successmlx5dv_devx_destroy_eq will return 0, on error errno will be returned. If the error value is EREMOTEIO, outbox.status and outbox.syndrome will contain the command failure details.
mlx5dv_devx_alloc_msi_vector(3),mlx5dv_devx_query_eqn(3)
Mark Zhang ⟨markzhang@nvidia.com⟩
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.orgmlx5 2022-01-12mlx5dv_devx_create_eq(3)HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. | |