/***********************************************************************
* Receive Pirate Loop
* - while raiding, loot for message packet
* - update flow control condition count
* - put async message packets into queue
**********************************************************************/
void usrp2_impl::io_impl::recv_pirate_loop(
zero_copy_if::sptr err_xport, size_t index
){
set_thread_priority_safe();
//store a reference to the flow control monitor (offset by max dsps)
flow_control_monitor &fc_mon = *(this->fc_mons[index]);
while (not boost::this_thread::interruption_requested()){
managed_recv_buffer::sptr buff = err_xport->get_recv_buff();
if (not buff.get()) continue; //ignore timeout/error buffers
try{
//extract the vrt header packet info
vrt::if_packet_info_t if_packet_info;
if_packet_info.num_packet_words32 = buff->size()/sizeof(boost::uint32_t);
const boost::uint32_t *vrt_hdr = buff->cast<const boost::uint32_t *>();
vrt::if_hdr_unpack_be(vrt_hdr, if_packet_info);
//handle a tx async report message
if (if_packet_info.sid == USRP2_TX_ASYNC_SID and if_packet_info.packet_type != vrt::if_packet_info_t::PACKET_TYPE_DATA){
//fill in the async metadata
async_metadata_t metadata;
metadata.channel = index;
metadata.has_time_spec = if_packet_info.has_tsi and if_packet_info.has_tsf;
metadata.time_spec = time_spec_t(
time_t(if_packet_info.tsi), size_t(if_packet_info.tsf), tick_rate
);
metadata.event_code = async_metadata_t::event_code_t(sph::get_context_code(vrt_hdr, if_packet_info));
//catch the flow control packets and react
if (metadata.event_code == 0){
boost::uint32_t fc_word32 = (vrt_hdr + if_packet_info.num_header_words32)[1];
fc_mon.update_fc_condition(uhd::ntohx(fc_word32));
continue;
}
//else UHD_MSG(often) << "metadata.event_code " << metadata.event_code << std::endl;
async_msg_fifo.push_with_pop_on_full(metadata);
if (metadata.event_code &
( async_metadata_t::EVENT_CODE_UNDERFLOW
| async_metadata_t::EVENT_CODE_UNDERFLOW_IN_PACKET)
) UHD_MSG(fastpath) << "U";
else if (metadata.event_code &
( async_metadata_t::EVENT_CODE_SEQ_ERROR
| async_metadata_t::EVENT_CODE_SEQ_ERROR_IN_BURST)
) UHD_MSG(fastpath) << "S";
else if (metadata.event_code &
async_metadata_t::EVENT_CODE_TIME_ERROR
) UHD_MSG(fastpath) << "L";
}
else{
//TODO unknown received packet, may want to print error...
}
}catch(const std::exception &e){
UHD_MSG(error) << "Error in recv pirate loop: " << e.what() << std::endl;
}
}
}
/***********************************************************************
* Receive Pirate Loop
* - while raiding, loot for message packet
* - update flow control condition count
* - put async message packets into queue
**********************************************************************/
void usrp2_impl::io_impl::recv_pirate_loop(
zero_copy_if::sptr err_xport, size_t index
){
set_thread_priority_safe();
//store a reference to the flow control monitor (offset by max dsps)
flow_control_monitor &fc_mon = *(this->fc_mons[index]);
while (not boost::this_thread::interruption_requested()){
managed_recv_buffer::sptr buff = err_xport->get_recv_buff();
if (not buff.get()) continue; //ignore timeout/error buffers
try{
//extract the vrt header packet info
vrt::if_packet_info_t if_packet_info;
if_packet_info.num_packet_words32 = buff->size()/sizeof(uint32_t);
const uint32_t *vrt_hdr = buff->cast<const uint32_t *>();
vrt::if_hdr_unpack_be(vrt_hdr, if_packet_info);
//handle a tx async report message
if (if_packet_info.sid == USRP2_TX_ASYNC_SID and if_packet_info.packet_type != vrt::if_packet_info_t::PACKET_TYPE_DATA){
//fill in the async metadata
async_metadata_t metadata;
load_metadata_from_buff(uhd::ntohx<uint32_t>, metadata, if_packet_info, vrt_hdr, tick_rate, index);
//catch the flow control packets and react
if (metadata.event_code == 0){
uint32_t fc_word32 = (vrt_hdr + if_packet_info.num_header_words32)[1];
fc_mon.update_fc_condition(uhd::ntohx(fc_word32));
continue;
}
//else UHD_MSG(often) << "metadata.event_code " << metadata.event_code << std::endl;
async_msg_fifo.push_with_pop_on_full(metadata);
standard_async_msg_prints(metadata);
}
else{
//TODO unknown received packet, may want to print error...
}
}catch(const std::exception &e){
UHD_MSG(error) << "Error in recv pirate loop: " << e.what() << std::endl;
}
}
}