rdma_notify(3) — Linux manual page

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON

RDMA_NOTIFY(3)        Librdmacm Programmer's Manual       RDMA_NOTIFY(3)

NAME         top

       rdma_notify - Notifies the librdmacm of an asynchronous event.

SYNOPSIS         top

       #include <rdma/rdma_cma.h>

       int rdma_notify (struct rdma_cm_id *id, enum ibv_event_type
       event);

ARGUMENTS         top

       id          RDMA identifier.

       event       Asynchronous event.

DESCRIPTION         top

       Used to notify the librdmacm of asynchronous events that have
       occurred on a QP associated with the rdma_cm_id.

RETURN VALUE         top

       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.

NOTES         top

       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.

SEE ALSO         top

       rdma_connect(3), rdma_accept(3), rdma_listen(3)

COLOPHON         top

       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 2021-08-27.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2021-08-18.)  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)