NAME

       udaddy - RDMA CM datagram setup and simple ping-pong test.

SYNOPSIS

       udaddy [-s server_address] [-b bind_address] [-c connections]
                 [-C message_count] [-S message_size] [-p port_space]
       udaddy -s server_address [-b bind_address] [-c connections]
                 [-C message_count] [-S message_size] [-t tos] [-p port_space]

DESCRIPTION

       Establishes  a set of unreliable RDMA datagram communication paths between two nodes using
       the librdmacm, optionally transfers datagrams between  the  nodes,  then  tears  down  the
       communication.

OPTIONS

       -s server_address
              The  network  name  or IP address of the server system listening for communication.
              The used name or address must route over an  RDMA  device.   This  option  must  be
              specified by the client.

       -b bind_address
              The  local network address to bind to.  To bind to any address with IPv6 use -b ::0
              .

       -c connections
              The number of communication paths to establish between the client and server.   The
              test  uses  unreliable datagram communication, so no actual connections are formed.
              (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)

       -t tos Indicates  the  type  of  service  used  for the communication.  Type of service is
              implementation dependent based on subnet configuration.

       -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 udaddy on a server system, then run udaddy -s server_name 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), mckey(1), rping(1)