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NAME |SYNOPSIS |DESCRIPTION |ARGUMENTS |RETURN VALUE |AUTHOR |COLOPHON | |
mlx5dv_de...si_vector(3) mlx5 Programmer’s Manualmlx5dv_de...si_vector(3)mlx5dv_devx_alloc_msi_vector - Allocate an msi vector to be used for creating an EQ. mlx5dv_devx_free_msi_vector - Release an msi vector.
#include <infiniband/mlx5dv.h> struct mlx5dv_devx_msi_vector * mlx5dv_devx_alloc_msi_vector(struct ibv_context *ibctx); int mlx5dv_devx_free_msi_vector(struct mlx5dv_devx_msi_vector *msi);
Allocate or free an msi vector to be used for creating an EQ. The allocate API exposes a mlx5dv_devx_msi_vector object, which includes an msi vector and a fd. The vector can be used as the “eqc.intr” field when creating an EQ, while the fd (created as non-blocking) can be polled to see once there is some data on that EQ.
ibctx RDMA device context to create the action on.msi The msi vector object to work on.msi_vector struct mlx5dv_devx_msi_vector { int vector; int fd; };vector The vector to be used when creating the EQ over the device specification.fd The FD that will be used for polling.Upon successmlx5dv_devx_alloc_msi_vector will return a newstructmlx5dv_devx_msi_vector; On error NULL will be returned and errno will be set. Upon successmlx5dv_devx_free_msi_vector will return 0, on error errno will be returned.
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_de...si_vector(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. | |