присоединяется к группе многоадресной рассылки (Joins a multicast group.)
Имя (Name)
rdma_join_multicast - Joins a multicast group.
Синопсис (Synopsis)
#include <rdma/rdma_cma.h>
int rdma_join_multicast (struct rdma_cm_id *id, struct sockaddr
*addr, void *context);
Аргументы (Arguments)
id Communication identifier associated with the request.
addr Multicast address identifying the group to join.
context User-defined context associated with the join
request.
Описание (Description)
Joins a multicast group and attaches an associated QP to the
group.
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)
Before joining a multicast group, the rdma_cm_id must be bound to
an RDMA device by calling rdma_bind_addr or rdma_resolve_addr.
Use of rdma_resolve_addr requires the local routing tables to
resolve the multicast address to an RDMA device, unless a
specific source address is provided. The user must call
rdma_leave_multicast to leave the multicast group and release any
multicast resources. After the join operation completes, if a QP
is associated with the rdma_cm_id, it is automatically attached
to the multicast group when the multicast event is retrieved by
the user. Otherwise, the user is responsible for calling
ibv_attach_mcast to bind the QP to the multicast group. The join
context is returned to the user through the private_data field in
the rdma_cm_event.
Смотри также (See also)
rdma_leave_multicast(3), rdma_bind_addr(3), rdma_resolve_addr(3),
rdma_create_qp(3), rdma_get_cm_event(3)
