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Commit 2dd57162 authored by Eli Cohen's avatar Eli Cohen Committed by Roland Dreier
Browse files

IB/core: Add support for modify CQ 



Add support for modifying CQ parameters for controlling event
generation moderation.

Signed-off-by: default avatarEli Cohen <eli@mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 82c24c18

drivers/infiniband/core/verbs.c

+7 −0
Original line number Diff line number Diff line
@@ -630,6 +630,13 @@ 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))

include/rdma/ib_verbs.h

+11 −0
Original line number Diff line number Diff line
@@ -987,6 +987,8 @@ 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);
@@ -1391,6 +1393,15 @@ 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.