Provided by: rdmacm-utils_1.0.14.1-2_i386 bug


       mckey - RDMA CM multicast setup and simple data transfer test.


       mckey -m multicast_address [-s] [-b bind_address] [-c connections]
                 [-C message_count] [-S message_size] [-p port_space]
       mckey -m multicast_address -s [-b bind_address] [-c connections]
                 [-C message_count] [-S message_size] [-p port_space]
       mckey -M unmapped_multicast_address -b bind_address [-s] [-c connections]
                 [-C message_count] [-S message_size] [-p port_space]


       Establishes  a  set of RDMA multicast communication paths between nodes
       using the librdmacm, optionally transfers datagrams to receiving nodes,
       then tears down the communication.


       -m multicast_address
              IP multicast address to join.

       -M unmapped_multicast_address
              RDMA transport specific multicast address to join.

       -s     Send datagrams to the multicast group.

       -b bind_address
              The local network address to bind to.

       -c connections
              The number of QPs to join the multicast group.  (default 1)

       -C message_count
              The  number  of  messages  to  transfer  over  each  connection.
              (default 10)

       -S message_size
              The size of each message transferred, in bytes.  This value must
              be  smaller than the MTU of the underlying RDMA transport, or an
              error will occur.  (default 100)

       -p port_space
              The port space of the datagram communication.  May be either the
              RDMA  UDP  (0x0111)  or  IPoIB  (0x0002)  port  space.  (default


       Basic usage is to start mckey -m multicast_address on a server  system,
       then run mckey -m multicast_address -s on a client system.

       Unique  Infiniband  SA  assigned  multicast  GIDs  can  be  retrived by
       invoking mckey with a zero MGID or IP address.  (Example, -M  0  or  -m   The  assigned  address  will  be  displayed  to allow mckey
       clients to join the created group.

       Because this test maps RDMA resources to userspace, users  must  ensure
       that  they  have  available  system resources and permissions.  See the
       libibverbs README file for additional details.


       rdma_cm(7), ucmatose(1), udaddy(1), rping(1)