diff options
Diffstat (limited to 'host/lib/usrp/x300/x300_io_impl.cpp')
| -rw-r--r-- | host/lib/usrp/x300/x300_io_impl.cpp | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/host/lib/usrp/x300/x300_io_impl.cpp b/host/lib/usrp/x300/x300_io_impl.cpp index e3515af0c..1356daec5 100644 --- a/host/lib/usrp/x300/x300_io_impl.cpp +++ b/host/lib/usrp/x300/x300_io_impl.cpp @@ -216,9 +216,10 @@ struct x300_tx_fc_guts_t * FC credit we have is C = F + M - N (i.e. we can send C more packets * before getting another ack). */ -static size_t get_tx_flow_control_window(size_t frame_size, const device_addr_t& tx_args) +static size_t get_tx_flow_control_window(size_t frame_size, const bool dram_buff, const device_addr_t& tx_args) { - double hw_buff_size = tx_args.cast<double>("send_buff_size", X300_TX_HW_BUFF_SIZE); + double default_buff_size = dram_buff ? X300_TX_HW_BUFF_SIZE_DRAM : X300_TX_HW_BUFF_SIZE_SRAM; + double hw_buff_size = tx_args.cast<double>("send_buff_size", default_buff_size); size_t window_in_pkts = (static_cast<size_t>(hw_buff_size) / frame_size); if (window_in_pkts == 0) { throw uhd::value_error("send_buff_size must be larger than the send_frame_size."); @@ -580,8 +581,9 @@ tx_streamer::sptr x300_impl::get_tx_stream(const uhd::stream_args_t &args_) perif.duc->setup(args); //flow control setup - size_t fc_window = get_tx_flow_control_window(xport.send->get_send_frame_size(), device_addr); //In packets - const size_t fc_handle_window = std::max<size_t>(1, fc_window/X300_TX_FC_RESPONSE_FREQ); + size_t fc_window = get_tx_flow_control_window(xport.send->get_send_frame_size(), mb.has_dram_buff, device_addr); //In packets + const size_t fc_handle_window = std::max<size_t>(1, + fc_window/ (mb.has_dram_buff ? X300_TX_FC_RESPONSE_FREQ_DRAM : X300_TX_FC_RESPONSE_FREQ_SRAM)); UHD_LOG << "TX Flow Control Window = " << fc_window << ", TX Flow Control Handler Window = " << fc_handle_window << std::endl; |