rdma_post_write - post an RDMA write work request.
Contents
Arguments
id A reference to a communication identifier where the request will be posted.
context User-defined context associated with the request.
addr The local address of the source of the write request.
length The length of the write operation.
mr Optional memory region associated with the local buffer.
flags Optional flags used to control the write operation.
remote_addr The address of the remote registered memory to write into.
rkey The registered memory key associated with the remote address.
Description
Posts a work request to the send queue of the queue pair associated with the rdma_cm_id. The contents of
the local data buffer will be written into the remote memory region.
Name
rdma_post_write - post an RDMA write work request.
Notes
For a list of supported flags, see ibv_post_send. Unless inline data is specified, the local data buffer
must have been registered before the write is issued, and the buffer must remain registered until the
write completes. The remote buffer must always be registered.
Write 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 write request will be returned to the user through the work
completion wr_id, work request identifier, field.
Return Value
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure
reason.
See Also
rdma_cm(7), rdma_connect(3), rdma_accept(3), ibv_post_send(3), rdma_post_writev(3), rdma_reg_write(3), rdma_reg_msgs(3) librdmacm 2010-07-19 RDMA_POST_WRITE(3)
Synopsis
#include<rdma/rdma_verbs.h>intrdma_post_write(structrdma_cm_id*id,void*context,void*addr,size_tlength,structibv_mr*mr,intflags,uint64_tremote_addr,uint32_trkey);
