diff options
Diffstat (limited to 'host/lib/usrp/e300/e300_impl.cpp')
| -rw-r--r-- | host/lib/usrp/e300/e300_impl.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/host/lib/usrp/e300/e300_impl.cpp b/host/lib/usrp/e300/e300_impl.cpp index 5a6376039..fadac719c 100644 --- a/host/lib/usrp/e300/e300_impl.cpp +++ b/host/lib/usrp/e300/e300_impl.cpp @@ -706,14 +706,23 @@ uhd::sid_t e300_impl::_allocate_sid( uhd::both_xports_t e300_impl::make_transport( const uhd::sid_t &address, const xport_type_t type, - const uhd::device_addr_t &) + const uhd::device_addr_t &hints) { uhd::both_xports_t xports; xports.endianness = ENDIANNESS_LITTLE; - const uhd::transport::zero_copy_xport_params params = + uhd::transport::zero_copy_xport_params params = (type == CTRL) ? _ctrl_xport_params : _data_xport_params; + // Constrain frame sizes to MTU if supplied + if (type == TX_DATA) { + params.send_frame_size = std::min(params.send_frame_size, + hints.cast<size_t>("mtu", params.send_frame_size)); + } else if (type == RX_DATA) { + params.recv_frame_size = std::min(params.recv_frame_size, + hints.cast<size_t>("mtu", params.recv_frame_size)); + } + xports.send_sid = _allocate_sid(address); xports.recv_sid = xports.send_sid.reversed(); xports.recv_buff_size = params.recv_frame_size * params.num_recv_frames; |