отправить запрос на работу, чтобы получить входящее сообщение (post a work request to receive an incoming message.)
Имя (Name)
rdma_post_recv - post a work request to receive an incoming
message.
Синопсис (Synopsis)
#include <rdma/rdma_verbs.h>
int rdma_post_recv (struct rdma_cm_id *id, void *context, void
*addr, size_t length, struct ibv_mr *mr);
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 A registered memory region associated with the posted
buffer.
Описание (Description)
Posts a work request to the receive queue of the queue pair
associated with the rdma_cm_id. The posted buffer will be queued
to receive an incoming message sent by the remote peer.
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 a receive buffer is
posted and large enough to contain all sent data before the peer
posts the corresponding send message. The message buffer must
have been registered before being posted, with the mr parameter
referencing the registration. The buffer must remain registered
until the receive completes.
Messages may be posted to an rdma_cm_id only after a queue pair
has been associated with it. A queue pair is bound to an
rdma_cm_id after calling rdma_create_ep or rdma_create_qp, if the
rdma_cm_id is allocated using rdma_create_id.
The user-defined context associated with the receive 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_create_id(3), rdma_create_ep(3),
rdma_create_qp(3), rdma_reg_read(3), ibv_reg_mr(3),
ibv_dereg_mr(3), rdma_post_recvv(3), rdma_post_send(3)
