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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON |
RDMA_POST_UD_SEND(3) Librdmacm Programmer's Manual RDMA_POST_UD_SEND(3)
rdma_post_ud_send - post a work request to send a datagram.
#include <rdma/rdma_verbs.h>
int rdma_post_ud_send (struct rdma_cm_id *id, void *context, void
*addr, size_t length, struct ibv_mr *mr, int flags, struct ibv_ah
*ah, uint32_t remote_qpn);
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 Optional registered memory region associated with the
posted buffer.
flags Optional flags used to control the send operation.
ah An address handle describing the address of the remote
node.
remote_qpn The number of the destination queue pair.
Posts a work request to the send queue of the queue pair associated
with the rdma_cm_id. The contents of the posted buffer will be sent
to the specified destination queue pair.
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 destination queue pair
has queued a receive request before issuing the send operations. For
a list of supported flags, see ibv_post_send. Unless the send
request is using inline data, the message buffer must have been
registered before being posted, with the mr parameter referencing the
registration. The buffer must remain registered until the send
completes.
The user-defined context associated with the send request will be
returned to the user through the work completion wr_id, work request
identifier, field.
rdma_cm(7), rdma_connect(3), rdma_accept(3), rdma_reg_msgs(3)
ibv_post_send(3), rdma_post_recv(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 2020-08-13. (At
that time, the date of the most recent commit that was found in the
repository was 2020-08-05.) 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_UD_SEND(3)
Pages that refer to this page: rdma_cm(7)