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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON |
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RDMA_NOTIFY(3) Librdmacm Programmer's Manual RDMA_NOTIFY(3)
rdma_notify - Notifies the librdmacm of an asynchronous event.
#include <rdma/rdma_cma.h>
int rdma_notify (struct rdma_cm_id *id, enum ibv_event_type
event);
id RDMA identifier.
event Asynchronous event.
Used to notify the librdmacm of asynchronous events that have
occurred on a QP associated with the rdma_cm_id.
Returns 0 on success, or -1 on error. If an error occurs, errno
will be set to indicate the failure reason. If errno is set to
EISCONN (transport endpoint is already connected), this indicates
that the the underlying communication manager established the
connection before the call to rdma_notify could be processed. In
this case, the error may safely be ignored.
Asynchronous events that occur on a QP are reported through the
user's device event handler. This routine is used to notify the
librdmacm of communication events. In most cases, use of this
routine is not necessary, however if connection establishment is
done out of band (such as done through Infiniband), it's possible
to receive data on a QP that is not yet considered connected.
This routine forces the connection into an established state in
this case in order to handle the rare situation where the
connection never forms on its own. Calling this routine ensures
the delivery of the RDMA_CM_EVENT_ESTABLISHED event to the
application. Events that should be reported to the CM are:
IB_EVENT_COMM_EST.
rdma_connect(3), rdma_accept(3), rdma_listen(3)
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 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) 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
librdmacm 2007-05-15 RDMA_NOTIFY(3)
Pages that refer to this page: rdma_cm(7)
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HTML rendering created 2025-09-06 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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