-*- nroff -*-
Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md

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

 #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" ); 

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.

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).

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.

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

Dotan Barak <dotanba@gmail.com>