Provided by: rdmacm-utils_1.0.8-1_i386 bug

NAME

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

SYNOPSIS

       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]

DESCRIPTION

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

OPTIONS

       -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
              RDMA_PS_UDP)

NOTES

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

       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.

SEE ALSO

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