mlx5dv_devx_create_eq(3)

Usage

: #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);

Overview

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().

Arguments

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 of in buffer in bytes.

out: A buffer which contains the command’s output data according to the device specification format.

outlen: The size of out 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.

Notes

mlx5dv_devx_query_eqn() will not support vectors which are used by mlx5dv_devx_create_eq().

Return value

Upon success mlx5dv_devx_create_eq will return a new struct mlx5dv_devx_eq; On error NULL will be returned and errno will be set.

Upon success mlx5dv_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.

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