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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
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IBV_CREATE_CQ(3) Libibverbs Programmer's Manual IBV_CREATE_CQ(3)
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 <[email protected]>
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
[email protected]. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2024-06-10.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
libibverbs 2006-10-31 IBV_CREATE_CQ(3)
Pages that refer to this page: ibv_create_comp_channel(3), ibv_create_cq_ex(3), ibv_get_cq_event(3), ibv_modify_cq(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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