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)