отправить запрос на запись RDMA (post an RDMA write work request.)
Имя (Name)
rdma_post_writev - post an RDMA write work request.
Синопсис (Synopsis)
#include <rdma/rdma_verbs.h>
int rdma_post_writev (struct rdma_cm_id *id, void *context,
struct ibv_sge *sgl, int nsge, int flags, uint64_t remote_addr,
uint32_t rkey);
Аргументы (Arguments)
id A reference to a communication identifier where the
request will be posted.
context User-defined context associated with the request.
sgl A scatter-gather list of the source buffers of the
write.
nsge The number of scatter-gather array entries.
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.
Описание (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
buffers will be written into the remote memory region.
Возвращаемое значение (Return value)
Returns 0 on success, or -1 on error. If an error occurs, errno
will be set to indicate the failure reason.
Примечание (Note)
For a list of supported flags, see ibv_post_send. Unless inline
data is specified, the local data buffers must have been
registered before the write is issued, and the buffers must
remain registered until the write completes. The remote buffers
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.
Смотри также (See also)
rdma_cm(7), rdma_connect(3), rdma_accept(3), ibv_post_send(3),
rdma_post_write(3), rdma_reg_write(3), rdma_reg_msgs(3)
