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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON |
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RDMA_POST_RECV(3) Librdmacm Programmer's Manual RDMA_POST_RECV(3)
rdma_post_recv - post a work request to receive an incoming
message.
#include <rdma/rdma_verbs.h>
int rdma_post_recv (struct rdma_cm_id *id, void *context, void
*addr, size_t length, struct ibv_mr *mr);
id A reference to a communication identifier where the
message buffer will be posted.
context User-defined context associated with the request.
addr The address of the memory buffer to post.
length The length of the memory buffer.
mr A registered memory region associated with the posted
buffer.
Posts a work request to the receive queue of the queue pair
associated with the rdma_cm_id. The posted buffer 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 a receive buffer is
posted and large enough to contain all sent data before the peer
posts the corresponding send message. The message buffer must
have been registered before being posted, with the mr parameter
referencing the registration. The buffer 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_recvv(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
[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]
librdmacm 2010-07-19 RDMA_POST_RECV(3)
Pages that refer to this page: rdma_post_recvv(3), rdma_post_send(3), rdma_post_sendv(3), rdma_post_ud_send(3), rdma_reg_msgs(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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