[ofa-general] [PATCH 13/16 v2] IB/ipoib: Add support for modify CQ

[Ralph Campbell]

Can you send out a specification for what ib_modify_cq()
is supposed to do?  It isn't part of the IBTA verbs spec.
so I don't know how other HCAs are supposed to implement it.

On Thu, 2008-01-24 at 18:57 +0200, Eli Cohen wrote:
> Add support for modify CQ
> 
> Add support for modifying CQ parameters for controlling
> event generation moderation.
> 
> Signed-off-by: Eli Cohen <eli at mellnaox.co.il>
> ---
> 
> changes:
> Fix spelling mistakes
> Fix function documentation
> 
>  drivers/infiniband/core/verbs.c |    7 +++++++
>  include/rdma/ib_verbs.h         |   11 +++++++++++
>  2 files changed, 18 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
> index 86ed8af..84709ed 100644
> --- a/drivers/infiniband/core/verbs.c
> +++ b/drivers/infiniband/core/verbs.c
> @@ -628,6 +628,13 @@ struct ib_cq *ib_create_cq(struct ib_device *device,
>  }
>  EXPORT_SYMBOL(ib_create_cq);
>  
> +int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
> +{
> +	return cq->device->modify_cq ?
> +		cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
> +}
> +EXPORT_SYMBOL(ib_modify_cq);
> +
>  int ib_destroy_cq(struct ib_cq *cq)
>  {
>  	if (atomic_read(&cq->usecnt))
> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index 6ef1729..a8f94a9 100644
> --- a/include/rdma/ib_verbs.h
> +++ b/include/rdma/ib_verbs.h
> @@ -984,6 +984,8 @@ struct ib_device {
>  						int comp_vector,
>  						struct ib_ucontext *context,
>  						struct ib_udata *udata);
> +	int                        (*modify_cq)(struct ib_cq *cq, u16 cq_count,
> +						u16 cq_period);
>  	int                        (*destroy_cq)(struct ib_cq *cq);
>  	int                        (*resize_cq)(struct ib_cq *cq, int cqe,
>  						struct ib_udata *udata);
> @@ -1389,6 +1391,15 @@ struct ib_cq *ib_create_cq(struct ib_device *device,
>  int ib_resize_cq(struct ib_cq *cq, int cqe);
>  
>  /**
> + * ib_modify_cq - Modifies moderation params of the CQ
> + * @cq: The CQ to modify.
> + * @cq_count: number of CQEs that will trigger an event
> + * @cq_period: max period of time in usec before triggering an event
> + *
> + */
> +int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
> +
> +/**
>   * ib_destroy_cq - Destroys the specified CQ.
>   * @cq: The CQ to destroy.
>   */