регистр (буферы) данных для удаленного доступа на чтение RDMA (register data buffer(s) for remote RDMA read access.)
Имя (Name)
rdma_reg_read - register data buffer(s) for remote RDMA read
access.
Синопсис (Synopsis)
#include <rdma/rdma_verbs.h>
struct ibv_mr * rdma_reg_read (struct rdma_cm_id *id, void *addr,
size_t length);
Аргументы (Arguments)
id A reference to a communication identifier where the
message buffer(s) will be used.
addr The address of the memory buffer(s) to register.
length The total length of the memory to register.
Описание (Description)
Registers a memory buffer that will be accessed by a remote RDMA
read operation. Memory buffers registered using rdma_reg_read
may be targeted in an RDMA read request, allowing the buffer to
be specified on the remote side of an RDMA connection as the
remote_addr of rdma_post_read, or similar call.
Возвращаемое значение (Return value)
Returns a reference to the registered memory region on success,
or NULL on error. If an error occurs, errno will be set to
indicate the failure reason.
Примечание (Note)
rdma_reg_read is used to register a data buffer that will be the
target of an RDMA read operation on a queue pair associated with
an rdma_cm_id. The memory buffer is registered with the
proteection domain associated with the idenfier. The start of
the data buffer is specified through the addr parameter, and the
total size of the buffer is given by length.
All data buffers should be registered before being posted as a
work request. Users must deregister all registered memory by
calling rdma_dereg_mr.
Смотри также (See also)
rdma_cm(7), rdma_create_id(3), rdma_create_ep(3),
rdma_reg_msgs(3), rdma_reg_write(3), ibv_reg_mr(3),
ibv_dereg_mr(3), rdma_post_read(3)
