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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHORS | COLOPHON |
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IBV_CR...CHANNEL(3) Libibverbs Programmer's Manual IBV_CR...CHANNEL(3)
ibv_create_comp_channel, ibv_destroy_comp_channel - create or
destroy a completion event channel
#include <infiniband/verbs.h>
struct ibv_comp_channel *ibv_create_comp_channel(struct ibv_context
*context);
int ibv_destroy_comp_channel(struct ibv_comp_channel *channel);
ibv_create_comp_channel() creates a completion event channel for
the RDMA device context context.
ibv_destroy_comp_channel() destroys the completion event channel
channel.
ibv_create_comp_channel() returns a pointer to the created
completion event channel, or NULL if the request fails.
ibv_destroy_comp_channel() returns 0 on success, or the value of
errno on failure (which indicates the failure reason).
A "completion channel" is an abstraction introduced by libibverbs
that does not exist in the InfiniBand Architecture verbs
specification or RDMA Protocol Verbs Specification. A completion
channel is essentially file descriptor that is used to deliver
completion notifications to a userspace process. When a
completion event is generated for a completion queue (CQ), the
event is delivered via the completion channel attached to that
CQ. This may be useful to steer completion events to different
threads by using multiple completion channels.
ibv_destroy_comp_channel() fails if any CQs are still associated
with the completion event channel being destroyed.
ibv_open_device(3), ibv_create_cq(3), ibv_get_cq_event(3)
Dotan Barak <dotanba@gmail.com>
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
linux-rdma@vger.kernel.org. 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
man-pages@man7.org
libibverbs 2006-10-31 IBV_CR...CHANNEL(3)
Pages that refer to this page: ibv_get_cq_event(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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