Provided by: librdmacm-dev_1.0.14.1-2_i386 bug


       rdma_reg_read - register data buffer(s) for remote RDMA read access.


       #include <rdma/rdma_verbs.h>

       struct  ibv_mr  *  rdma_reg_read  (struct  rdma_cm_id  *id, void *addr,
       size_t length);


       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.


       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.


       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.


       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_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)