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.

       -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)