ibv_create_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);
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 argu-
ment channel is optional; if not NULL, the completion channel channel
will be used to return completion events. The CQ will use the comple-
tion 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).
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+-----------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------------+
|Availability | network/open-fabrics |
+---------------+-----------------------+
|Stability | Pass-through volatile |
+---------------+-----------------------+
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.
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from ['https://www.openfabrics.org/down-
loads/ibutils/ibutils-1.5.7-0.2.gbd7e502.tar.gz', 'https://www.openfab-
rics.org/downloads/libibverbs/libibverbs-1.1.8.tar.gz',
'https://www.openfabrics.org/downloads/libmlx4/libmlx4-1.0.6.tar.gz',
'https://www.openfabrics.org/downloads/libsdp/lib-
sdp-1.1.108-0.15.gd7fdb72.tar.gz', 'https://www.openfabrics.org/down-
loads/management/infiniband-diags-1.6.5.tar.gz', 'https://www.openfab-
rics.org/downloads/management/libibmad-1.3.12.tar.gz',
'https://www.openfabrics.org/downloads/management/libibu-
mad-1.3.10.2.tar.gz', 'https://www.openfabrics.org/downloads/manage-
ment/opensm-3.3.19.tar.gz', 'https://www.openfabrics.org/down-
loads/perftest/perftest-1.3.0-0.42.gf350d3d.tar.gz', 'https://www.open-
fabrics.org/downloads/qperf/qperf-0.4.9.tar.gz', 'https://www.openfab-
rics.org/downloads/rdmacm/librdmacm-1.0.21.tar.gz', 'https://www.open-
fabrics.org/downloads/rds-tools/rds-tools-2.0.4.tar.gz'].
Further information about this software can be found on the open source
community website at http://www.openfabrics.org/.
SEE ALSO
ibv_resize_cq(3), ibv_req_notify_cq(3), ibv_ack_cq_events(3), ibv_cre-
ate_qp(3)
AUTHORS
Dotan Barak <dotanba@gmail.com>
libibverbs 2006-10-31 IBV_CREATE_CQ(3)