11-12-2007
I suggest you give some context, is the data in memory, in a file, part of piped data?
How are you doing the conversion?
How are you holding the data?
How are you determining the length?
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LEARN ABOUT CENTOS
rdma_post_write
RDMA_POST_WRITE(3) Librdmacm Programmer's Manual RDMA_POST_WRITE(3)
NAME
rdma_post_write - post an RDMA write work request.
SYNOPSIS
#include <rdma/rdma_verbs.h>
int rdma_post_write (struct rdma_cm_id *id, void *context, void *addr, size_t length, struct ibv_mr *mr, int flags, uint64_t remote_addr,
uint32_t rkey);
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
writen into the remote memory region.
RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason.
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.
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)