IB/core: Add support for modify CQ
Add support for modifying CQ parameters for controlling
event generation moderation.
Signed-off-by: Eli Cohen <[EMAIL PROTECTED]>
---
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 44a5713..f6a8247 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.
*/
--
1.5.3.8
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