diff options
Diffstat (limited to 'host')
| -rw-r--r-- | host/docs/usrp_x3x0_config.rst | 7 | ||||
| -rw-r--r-- | host/lib/usrp/x300/x300_impl.cpp | 25 | ||||
| -rw-r--r-- | host/lib/usrp/x300/x300_impl.hpp | 2 |
3 files changed, 17 insertions, 17 deletions
diff --git a/host/docs/usrp_x3x0_config.rst b/host/docs/usrp_x3x0_config.rst index 9cb000275..22ef8c595 100644 --- a/host/docs/usrp_x3x0_config.rst +++ b/host/docs/usrp_x3x0_config.rst @@ -69,19 +69,20 @@ Configuring the MTU ------------------------------------- In order to achieve maximum performance, we recommend setting the MTU size to 9000 for 10 GigE and 1500 for 1 GigE. It is possible to use smaller MTUs, but this -can affect performance. With some NICs, setting the MTU too high can also cause issues, -though. To set the MTU to 9000, you can use the following command: +can affect performance. With some NICs, setting the MTU too high can also cause issues. +To set the MTU to 9000, you can use the following command: :: sudo ifconfig <interface> mtu 9000 # For 10 GigE + sudo ifconfig <interface> mtu 1500 # For 1 GigE Using these MTUs will set the frame sizes for UHD communication to 8000 and 1472, respectively. In some cases, specifying the frame size manually by adding the argument "<send/recv>_frame_size=1472" can solve issues. Note that a frame size of 1472 will limit -the available sampling rate, although this is likely not a problem issue on 1 GigE. +the available sampling rate, although this is not a problem on 1 GigE. Configuring the Firewall diff --git a/host/lib/usrp/x300/x300_impl.cpp b/host/lib/usrp/x300/x300_impl.cpp index 466827380..48b9e9bd4 100644 --- a/host/lib/usrp/x300/x300_impl.cpp +++ b/host/lib/usrp/x300/x300_impl.cpp @@ -430,16 +430,16 @@ void x300_impl::setup_mb(const size_t mb_i, const uhd::device_addr_t &dev_addr) // Detect the frame size on the path to the USRP try { - max_frame_sizes = determine_max_frame_size(mb.addr, req_max_frame_size); + _max_frame_sizes = determine_max_frame_size(mb.addr, req_max_frame_size); } catch(std::exception &e) { UHD_MSG(error) << e.what() << std::endl; } if ((mb.recv_args.has_key("recv_frame_size")) - && (req_max_frame_size.recv_frame_size < max_frame_sizes.recv_frame_size)) { + && (req_max_frame_size.recv_frame_size < _max_frame_sizes.recv_frame_size)) { UHD_MSG(warning) << boost::format("You requested a receive frame size of (%lu) but your NIC's max frame size is (%lu).") - % req_max_frame_size.recv_frame_size << max_frame_sizes.recv_frame_size << std::endl + % req_max_frame_size.recv_frame_size << _max_frame_sizes.recv_frame_size << std::endl << boost::format("Please verify your NIC's MTU setting using '%s' or set the recv_frame_size argument appropriately.") % mtu_tool << std::endl << "UHD will use the auto-detected max frame size for this connection." @@ -447,10 +447,10 @@ void x300_impl::setup_mb(const size_t mb_i, const uhd::device_addr_t &dev_addr) } if ((mb.recv_args.has_key("send_frame_size")) - && (req_max_frame_size.send_frame_size < max_frame_sizes.send_frame_size)) { + && (req_max_frame_size.send_frame_size < _max_frame_sizes.send_frame_size)) { UHD_MSG(warning) << boost::format("You requested a send frame size of (%lu) but your NIC's max frame size is (%lu).") - % req_max_frame_size.send_frame_size << max_frame_sizes.send_frame_size << std::endl + % req_max_frame_size.send_frame_size << _max_frame_sizes.send_frame_size << std::endl << boost::format("Please verify your NIC's MTU setting using '%s' or set the send_frame_size argument appropriately.") % mtu_tool << std::endl << "UHD will use the auto-detected max frame size for this connection." @@ -1122,29 +1122,28 @@ x300_impl::both_xports_t x300_impl::make_transport( /* Print a warning if the system's max available frame size is less than the most optimal * frame size for this type of connection. */ - if (max_frame_sizes.send_frame_size < eth_data_rec_frame_size) { + if (_max_frame_sizes.send_frame_size < eth_data_rec_frame_size) { UHD_MSG(warning) << boost::format("For this connection, UHD recommends a send frame size of at least %lu for best\nperformance, but your system's MTU will only allow %lu.") % eth_data_rec_frame_size - % max_frame_sizes.send_frame_size + % _max_frame_sizes.send_frame_size << std::endl << "This will negatively impact your maximum achievable sample rate." << std::endl; } - if (max_frame_sizes.recv_frame_size < eth_data_rec_frame_size) { + if (_max_frame_sizes.recv_frame_size < eth_data_rec_frame_size) { UHD_MSG(warning) << boost::format("For this connection, UHD recommends a receive frame size of at least %lu for best\nperformance, but your system's MTU will only allow %lu.") % eth_data_rec_frame_size - % max_frame_sizes.recv_frame_size + % _max_frame_sizes.recv_frame_size << std::endl << "This will negatively impact your maximum achievable sample rate." << std::endl; } - // Account for headers - size_t system_max_send_frame_size = (size_t) max_frame_sizes.send_frame_size - 64; - size_t system_max_recv_frame_size = (size_t) max_frame_sizes.recv_frame_size - 64; + size_t system_max_send_frame_size = (size_t) _max_frame_sizes.send_frame_size; + size_t system_max_recv_frame_size = (size_t) _max_frame_sizes.recv_frame_size; // Make sure frame sizes do not exceed the max available value supported by UHD default_buff_args.send_frame_size = @@ -1167,7 +1166,7 @@ x300_impl::both_xports_t x300_impl::make_transport( ? X300_ETH_DATA_NUM_FRAMES : X300_ETH_MSG_NUM_FRAMES; - //make a new transport - fpga has no idea how to talk to use on this yet + //make a new transport - fpga has no idea how to talk to us on this yet udp_zero_copy::buff_params buff_params; xports.recv = udp_zero_copy::make(mb.addr, BOOST_STRINGIZE(X300_VITA_UDP_PORT), diff --git a/host/lib/usrp/x300/x300_impl.hpp b/host/lib/usrp/x300/x300_impl.hpp index 0fe63e4a5..1e159ef38 100644 --- a/host/lib/usrp/x300/x300_impl.hpp +++ b/host/lib/usrp/x300/x300_impl.hpp @@ -267,7 +267,7 @@ private: size_t recv_frame_size; size_t send_frame_size; }; - frame_size_t max_frame_sizes; + frame_size_t _max_frame_sizes; /*! * Automatically determine the maximum frame size available by sending a UDP packet |