Prints information about RNIC devices available for use from user space.
ibv_devinfo [-v] { [-d<dev>] [-i<port>] } | [-l]
| -d dev | Uses RDMA device <dev> (default first device found). |
| -i port | Uses port <port> of RDMA device (default all ports). |
| -l | Prints only the RDMA devices name. |
| -v | Prints all the attributes of the RDMA device(s). |