mlx5dv_devx_alloc_msi_vector3
Allocate an msi vector to be used for creating an eq. mlx5dv_devx_free_msi_vector - release an msi vector.
Usage
-
#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);
Overview
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.
Arguments
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.
Return value
Upon success mlx5dv_devx_alloc_msi_vector will return a new struct mlx5dv_devx_msi_vector; On error NULL will be returned and errno will be set.
Upon success mlx5dv_devx_free_msi_vector will return 0, on error errno will be returned.
Releases
3 releases since Debian 12 (Bookworm); the text changed 2 times.