rdma_get_src_port   -   Returns  the  local  port  number  of  a  bound
       rdma_cm_id.
       #include <rdma/rdma_cma.h>
       uint16_t rdma_get_src_port (struct rdma_cm_id *id);
       id          RDMA identifier.
       Returns the local port number for an rdma_cm_id that has been bound  to
       a local address.
       rdma_bind_addr(3),      rdma_resolve_addr(3),     rdma_get_dst_port(3),
       rdma_get_local_addr(3), rdma_get_peer_addr(3)