diff options
Diffstat (limited to 'host')
| -rw-r--r-- | host/lib/usrp/mpmd/mpmd_xport_ctrl_liberio.cpp | 46 |
1 files changed, 29 insertions, 17 deletions
diff --git a/host/lib/usrp/mpmd/mpmd_xport_ctrl_liberio.cpp b/host/lib/usrp/mpmd/mpmd_xport_ctrl_liberio.cpp index 2780f15da..b7fadbe26 100644 --- a/host/lib/usrp/mpmd/mpmd_xport_ctrl_liberio.cpp +++ b/host/lib/usrp/mpmd/mpmd_xport_ctrl_liberio.cpp @@ -14,6 +14,19 @@ using namespace uhd::mpmd::xport; namespace { + //! Max frame size of a control packet in bytes + const size_t LIBERIO_CTRL_FRAME_MAX_SIZE = 128; + //! Max frame size of an async message packet in bytes + const size_t LIBERIO_ASYNC_FRAME_MAX_SIZE = 256; + //! Max frame size of a flow control packet in bytes + const size_t LIBERIO_FC_FRAME_MAX_SIZE = 64; + //! The max MTU will be this number times the page size + const size_t LIBERIO_PAGES_PER_BUF = 2; + //! Number of descriptors that liberio allocates (receive) + const size_t LIBERIO_NUM_RECV_FRAMES = 128; + //! Number of descriptors that liberio allocates (send) + const size_t LIBERIO_NUM_SEND_FRAMES = 128; + uint32_t extract_sid_from_pkt(void* pkt, size_t) { return uhd::sid_t(uhd::wtohx(static_cast<const uint32_t*>(pkt)[1])) .get_dst(); @@ -42,19 +55,19 @@ mpmd_xport_ctrl_liberio::make_transport( default_buff_args.send_frame_size = get_mtu(uhd::TX_DIRECTION); default_buff_args.recv_frame_size = get_mtu(uhd::RX_DIRECTION); - default_buff_args.num_recv_frames = 128; - default_buff_args.num_send_frames = 128; + default_buff_args.num_recv_frames = LIBERIO_NUM_RECV_FRAMES; + default_buff_args.num_send_frames = LIBERIO_NUM_SEND_FRAMES; if (xport_type == usrp::device3_impl::CTRL) { - default_buff_args.send_frame_size = 128; - default_buff_args.recv_frame_size = 128; + default_buff_args.send_frame_size = LIBERIO_CTRL_FRAME_MAX_SIZE; + default_buff_args.recv_frame_size = LIBERIO_CTRL_FRAME_MAX_SIZE; } else if (xport_type == usrp::device3_impl::ASYNC_MSG) { - default_buff_args.send_frame_size = 256; - default_buff_args.recv_frame_size = 256; + default_buff_args.send_frame_size = LIBERIO_ASYNC_FRAME_MAX_SIZE; + default_buff_args.recv_frame_size = LIBERIO_ASYNC_FRAME_MAX_SIZE; } else if (xport_type == usrp::device3_impl::RX_DATA) { - default_buff_args.send_frame_size = 64; + default_buff_args.send_frame_size = LIBERIO_FC_FRAME_MAX_SIZE; } else { - default_buff_args.recv_frame_size = 64; + default_buff_args.recv_frame_size = LIBERIO_FC_FRAME_MAX_SIZE; } const std::string tx_dev = xport_info["tx_dev"]; @@ -69,9 +82,9 @@ mpmd_xport_ctrl_liberio::make_transport( // buffer... float divisor = 1; if (xport_type == usrp::device3_impl::CTRL) - divisor = 16; + divisor = 16; else if (xport_type == usrp::device3_impl::ASYNC_MSG) - divisor = 4; + divisor = 4; //if (xport_info["muxed"] == "True") { @@ -80,8 +93,8 @@ mpmd_xport_ctrl_liberio::make_transport( if (xport_type == usrp::device3_impl::CTRL) { UHD_ASSERT_THROW(xport_info["muxed"] == "True"); if (not _ctrl_dma_xport) { - default_buff_args.send_frame_size = 128; - default_buff_args.recv_frame_size = 128; + default_buff_args.send_frame_size = LIBERIO_CTRL_FRAME_MAX_SIZE; + default_buff_args.recv_frame_size = LIBERIO_CTRL_FRAME_MAX_SIZE; _ctrl_dma_xport = make_muxed_liberio_xport(tx_dev, rx_dev, default_buff_args, int(divisor)); } @@ -92,8 +105,8 @@ mpmd_xport_ctrl_liberio::make_transport( } else if (xport_type == usrp::device3_impl::ASYNC_MSG) { UHD_ASSERT_THROW(xport_info["muxed"] == "True"); if (not _async_msg_dma_xport) { - default_buff_args.send_frame_size = 256; - default_buff_args.recv_frame_size = 256; + default_buff_args.send_frame_size = LIBERIO_ASYNC_FRAME_MAX_SIZE; + default_buff_args.recv_frame_size = LIBERIO_ASYNC_FRAME_MAX_SIZE; _async_msg_dma_xport = make_muxed_liberio_xport( tx_dev, rx_dev, default_buff_args, int(divisor)); } @@ -103,8 +116,7 @@ mpmd_xport_ctrl_liberio::make_transport( xports.recv = _async_msg_dma_xport->make_stream(xports.recv_sid.get_dst()); } else { - xports.recv = - transport::liberio_zero_copy::make( + xports.recv = transport::liberio_zero_copy::make( tx_dev, rx_dev, default_buff_args); } @@ -133,7 +145,7 @@ bool mpmd_xport_ctrl_liberio::is_valid( size_t mpmd_xport_ctrl_liberio::get_mtu( const uhd::direction_t /* dir */ ) const { - return 2 * getpagesize(); + return LIBERIO_PAGES_PER_BUF * getpagesize(); } uhd::transport::muxed_zero_copy_if::sptr |