отправить запрос на отправку дейтаграммы (post a work request to send a datagram.)
Имя (Name)
rdma_post_ud_send - post a work request to send a datagram.
Синопсис (Synopsis)
#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);
Аргументы (Arguments)
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.
Описание (Description)
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.
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)
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.
Смотри также (See also)
rdma_cm(7), rdma_connect(3), rdma_accept(3), rdma_reg_msgs(3)
ibv_post_send(3), rdma_post_recv(3)
