rdma_ack_cm_event man page
rdma_ack_cm_event — Free a communication event.
int rdma_ack_cm_event (struct rdma_cm_event *event);
Event to be released.
All events which are allocated by rdma_get_cm_event must be released, there should be a one-to-one correspondence between successful gets and acks. This call frees the event structure and any memory that it references.
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason.
rdma_cm(7), rdma_destroy_event_channel(3), rdma_destroy_id(3), rdma_get_cm_event(3).