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CentOS 7.0 - man page for ibv_create_cq (centos section 3)

IBV_CREATE_CQ(3)		  Libibverbs Programmer's Manual		 IBV_CREATE_CQ(3)

NAME
       ibv_create_cq, ibv_destroy_cq - create or destroy a completion queue (CQ)

SYNOPSIS
       #include <infiniband/verbs.h>

       struct ibv_cq *ibv_create_cq(struct ibv_context *context, int cqe,
				    void *cq_context,
				    struct ibv_comp_channel *channel,
				    int comp_vector);

       int ibv_destroy_cq(struct ibv_cq *cq);

DESCRIPTION
       ibv_create_cq()	creates  a  completion	queue (CQ) with at least cqe entries for the RDMA
       device context context.	The pointer cq_context will be used to set user  context  pointer
       of the CQ structure. The argument channel is optional; if not NULL, the completion channel
       channel will be used to return completion events.  The CQ will use the  completion  vector
       comp_vector  for  signaling completion events; it must be at least zero and less than con-
       text->num_comp_vectors.

       ibv_destroy_cq() destroys the CQ cq.

RETURN VALUE
       ibv_create_cq() returns a pointer to the CQ, or NULL if the request fails.

       ibv_destroy_cq() returns 0 on success, or the value of errno on failure	(which	indicates
       the failure reason).

NOTES
       ibv_create_cq()	may  create  a	CQ with size greater than or equal to the requested size.
       Check the cqe attribute in the returned CQ for the actual size.

       ibv_destroy_cq() fails if any queue pair is still associated with this CQ.

SEE ALSO
       ibv_resize_cq(3), ibv_req_notify_cq(3), ibv_ack_cq_events(3), ibv_create_qp(3)

AUTHORS
       Dotan Barak <dotanba@gmail.com>

libibverbs				    2006-10-31				 IBV_CREATE_CQ(3)


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