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 context->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)