SIMPLE SOLUTIONS

RDMA_POST_SENDV(3) - Linux man page online | Library functions

Post a work request to send a message.

Chapter
2010-07-19
RDMA_POST_SENDV(3) Librdmacm Programmer's Manual RDMA_POST_SENDV(3)

NAME

rdma_post_sendv - post a work request to send a message.

SYNOPSIS

#include <rdma/rdma_verbs.h> int rdma_post_sendv (struct rdma_cm_id *id, void *context, struct ibv_sge *slg, int nsge, int flags);

ARGUMENTS

id A reference to a communication identifier where the message buffer will be posted. context User-defined context associated with the request. slg A scatter-gather list of memory buffers posted as a single request. nsge The number of scatter-gather entries in the slg array. flags Optional flags used to control the send operation.

DESCRIPTION

Posts a work request to the send queue of the queue pair associated with the rdma_cm_id. The contents of the posted buffers will be sent to the remote peer of a connection.

RETURN VALUE

Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason.

NOTES

The user is responsible for ensuring that the remote peer 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 buffers must have been regis‐ tered before being posted, and the buffers must remain registered until the send com‐ pletes. Send operations may not be posted to an rdma_cm_id or the corresponding queue pair until it has been connected. 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.

SEE ALSO

rdma_cm(7), rdma_connect(3), rdma_accept(3), ibv_post_send(3), rdma_post_send(3), rdma_post_recv(3)
librdmacm 2010-07-19 RDMA_POST_SENDV(3)
This manual Reference Other manuals
rdma_post_sendv(3) referred by rdma_cm(7) | rdma_post_send(3)
refer to ibv_post_send(3) | rdma_accept(3) | rdma_cm(7) | rdma_connect(3) | rdma_post_recv(3) | rdma_post_send(3)
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