mlx5dv_devx_create_eq(3) mlx5 Programmer’s Manual mlx5dv_devx_create_eq(3)
NAME
mlx5dv_devx_create_eq - Create an EQ object
mlx5dv_devx_destroy_eq - Destroy an EQ object
SYNOPSIS
#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);
DESCRIPTION
Create / Destroy an EQ object. Upon creation, the caller prepares the
in/out mail boxes based on the device specification format; For the in-
put 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_al-
loc_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_de-
vx_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.
SEE ALSO
mlx5dv_devx_alloc_msi_vector(3), mlx5dv_devx_query_eqn(3)
AUTHOR
Mark Zhang <markzhang@nvidia.com>
mlx5 2022-01-12 mlx5dv_devx_create_eq(3)
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