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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON |
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RDMA_POST_RECVV(3) Librdmacm Programmer's Manual RDMA_POST_RECVV(3)
rdma_post_recvv - post a work request to receive incoming
messages.
#include <rdma/rdma_verbs.h>
int rdma_post_recvv (struct rdma_cm_id *id, void *context, struct
ibv_sge *sgl, int nsge);
id A reference to a communication identifier where the
message buffer(s) will be posted.
context User-defined context associated with the request.
sgl A scatter-gather list of memory buffers posted as a
single request.
nsge The number of scatter-gather entries in the sgl
array.
Posts a single work request to the receive queue of the queue
pair associated with the rdma_cm_id. The posted buffers will be
queued to receive an incoming message sent by the remote peer.
Returns 0 on success, or -1 on error. If an error occurs, errno
will be set to indicate the failure reason.
The user is responsible for ensuring that the receive is posted,
and the total buffer space is large enough to contain all sent
data before the peer posts the corresponding send message. The
message buffers must have been registered before being posted,
and the buffers must remain registered until the receive
completes.
Messages may be posted to an rdma_cm_id only after a queue pair
has been associated with it. A queue pair is bound to an
rdma_cm_id after calling rdma_create_ep or rdma_create_qp, if the
rdma_cm_id is allocated using rdma_create_id.
The user-defined context associated with the receive request will
be returned to the user through the work completion wr_id, work
request identifier, field.
rdma_cm(7), rdma_create_id(3), rdma_create_ep(3),
rdma_create_qp(3), rdma_reg_read(3), ibv_reg_mr(3),
ibv_dereg_mr(3), rdma_post_recv(3), rdma_post_send(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 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
librdmacm 2010-07-19 RDMA_POST_RECVV(3)
Pages that refer to this page: rdma_post_recv(3), rdma_cm(7)
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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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