private void Send()
{
// Reset until they are needed
controlB.Enabled = false;
////////////// BUFFER code
// if we are receiving stuff from the memory, save it to the buffer
if (memory_receiving)
{
int buffer = buffer_calc.SaveData();
byte data = readResultB.Data;
tempSendRingBuffer.data = data;
tempSendRingBuffer.length = buffer_calc.MetadataCurrentSaveSegment().accum_len;
tempSendRingBuffer.socket = buffer_calc.MetadataCurrentSaveSegment().socket;
tempSendRingBuffer.sequence = (int)buffer_calc.MetadataCurrentSaveSegment().sequence;
send_buffer[buffer] = tempSendRingBuffer;
Logging.log.Trace($"Got memory. goes to buffer:{buffer} data:0x{data:X2}");
buffer_calc.FinishFillingCurrentSaveSegment();
memory_receiving = false;
}
// If the last clock had an request, we know that the next clock has
// to be receiving stuff.
if (memory_requested)
{
memory_receiving = true;
memory_requested = false;
}
// If there are no avaliable next segments, we cannot save data
if (buffer_calc.NextSegmentReady())
{
bool invalid = false;
int addr = -1;
int socket = -1;
int sequence = -1;
// Get the current focus element, and test if it is ready
int focused_memory_block = mem_calc.FocusSegment();
if (mem_calc.IsSegmentDone(focused_memory_block))
{
Logging.log.Trace($"memory segment is not ready, waiting. memory segment: {focused_memory_block}");
invalid = true;
}
if (!invalid)
{
// Get the socket and the sequence from the current memory block
socket = mem_calc.LoadMetaData(focused_memory_block).socket;
sequence = (int)mem_calc.LoadMetaData(focused_memory_block).sequence;
int maximum_sequence = sequence_dict.LoadMetaData(socket).maximum_sequence;
// Get the first sequence
int sequence_pointer = sequence_dict.GetFirstValue(socket);
int sequence_memory_block = memory_lookup[sequence_pointer];
// If this segment is not the first, push the current segment to top and try again
if (sequence_memory_block != focused_memory_block)
{
Logging.log.Warn("Segment is not the last one");
memory_lookup[sequence_dict.Observe(socket, sequence)] = mem_calc.DelaySegment(focused_memory_block);
invalid = true;
}
// If the sequence is bigger than the max, we should not use it, as it is not in order
if (sequence > maximum_sequence)
{
Logging.log.Warn("Segment is in front of sequence, must be missing blocks");
memory_lookup[sequence_dict.Observe(socket, sequence)] = mem_calc.DelaySegment(focused_memory_block);
invalid = true;
}
}
// Segment has been tested, and we can now load it's data
if (invalid)
{
addr = -1;
}
else
{
addr = mem_calc.LoadData(focused_memory_block);
}
// If we actually can get the address(If buffer empty etc)
if (addr != -1)
{
Logging.log.Trace($"Requesting memory from addr: {addr} on segment: {focused_memory_block}");
// Request the data
controlB.Enabled = true;
controlB.IsWriting = false;
controlB.Address = addr;
// we now have an request from memory
memory_requested = true;
// Get the metadata from the memory calculator, subtract the total by one, and
// Push it into the segment. This makes it possible to detect the last byte in the loaded data
tmp_send_inputdata = mem_calc.LoadMetaData(focused_memory_block);
Logging.log.Info($"Decrementing {focused_memory_block} {tmp_send_inputdata.accum_len} done: {mem_calc.IsSegmentDone(focused_memory_block)}");
tmp_send_inputdata.accum_len -= 1;
mem_calc.SaveMetaData(focused_memory_block, tmp_send_inputdata);
// We save the metadata onto the buffer
buffer_calc.NextSegment(mem_calc.LoadMetaData(focused_memory_block));
}
}
///////////// Sending code
// They are ready, we submit stuff
Logging.log.Trace($"The load segment valid: {buffer_calc.LoadSegmentReady()} ready: {dataOutBufferConsumerControlBusIn.ready}");
dataOutBufferProducerControlBusOut.valid = buffer_calc.LoadSegmentReady();
if (dataOutBufferConsumerControlBusIn.ready)
{
send_preload = true;
}
// Logging.log.Warn($"ready:{dataOutBufferConsumerControlBusIn.ready} " +
// $"valid:{dataOutBufferProducerControlBusOut.valid} " +
// $"send_preload:{send_preload}");
if (send_preload && buffer_calc.LoadSegmentReady())
{
int addr = buffer_calc.LoadData();
int socket = send_buffer[addr].socket;
dataOut.socket = socket;
byte data = send_buffer[addr].data;
dataOut.data = data;
int sequence = send_buffer[addr].sequence;
dataOutBufferProducerControlBusOut.valid = true;
dataOutBufferProducerControlBusOut.bytes_left = (uint)(send_buffer[addr].length);
buffer_calc.FinishReadingCurrentLoadSegment();
send_preload = false;
Logging.log.Trace($"Sending(or preloading valid): " +
$"data: 0x{data:X2} " +
$"buffer_addr: {addr} " +
$"sequence number: {sequence} " +
$"socket: {socket} " +
$"bytes left: {send_buffer[addr].length}");
// If the segment is fully loaded, we remove it from the sequence dict.
if (send_buffer[addr].length == 0)
{
Logging.log.Info($"Deleting because all have been sent socket: {socket} sequence: {sequence}");
sequence_dict.Delete(socket, sequence);
}
}
}
private void Send()
{
// Look in the FIFO buffer, and send the next element. If the element is ip segmented,
// Look through the segments in order, and override the normal fifo order. This way ip segmentation is
// solved in the buffer. TCP segmentation is solved in the dataout buffer.
// TODO: If we are at an segment in the ringbuffer where we should submit an segment, but the segment
// is not done, put it on the top of the FIFO queue, and update the segment pointer, then go to next packet
// Reset until they are needed
controlB.Enabled = false;
////////////// BUFFER code
// if we are receiving stuff from the memory, save it to the buffer
if (memory_receiving)
{
int buffer = buffer_calc.SaveData();
byte data = readResultB.Data;
tempSendRingBuffer.data = data;
tempSendRingBuffer.length = buffer_calc.MetadataCurrentSaveSegment().accum_len;
tempSendRingBuffer.mem_block_id = buffer_calc.MetadataCurrentSaveSegment().mem_block_id;
send_buffer[buffer] = tempSendRingBuffer;
Logging.log.Trace($"Got memory. goes to buffer:{buffer} data:0x{data:X2}");
buffer_calc.FinishFillingCurrentSaveSegment();
memory_receiving = false;
}
// If the last clock had an request, we know that the next clock has
// to be receiving stuff.
if (memory_requested)
{
memory_receiving = true;
memory_requested = false;
}
// If there are no avaliable next segments, we cannot save data
if (buffer_calc.NextSegmentReady())
{
// Get the address for the current focus element
int focus_segment = mem_calc.FocusSegment();
Logging.log.Trace($"focus segment: {focus_segment}");
int addr = mem_calc.LoadData(focus_segment);
// If we actually can get the address(If buffer empty etc)
if (addr != -1)
{
Logging.log.Trace($"Requesting memory from addr: {addr} on segment: {focus_segment}");
// Request the data
controlB.Enabled = true;
controlB.IsWriting = false;
controlB.Address = addr;
// we now have an request from memory
memory_requested = true;
// Get the metadata from the memory calculator, subtract the total by one, and
// Push it into the segment. This makes it possible to detect the last byte in the loaded data
tmp_send_info = mem_calc.LoadMetaData(focus_segment);
tmp_send_info.accum_len -= 1;
tmp_send_info.mem_block_id = focus_segment;
mem_calc.SaveMetaData(focus_segment, tmp_send_info);
// We save the metadata onto the buffer
buffer_calc.NextSegment(mem_calc.LoadMetaData(focus_segment));
}
}
///////////// Sending code
// They are ready, we submit stuff
Logging.log.Trace($"The load segment status: {buffer_calc.LoadSegmentReady()} ready: {packetOutBufferConsumerControlBusIn.ready}");
packetOutBufferProducerControlBusOut.valid = buffer_calc.LoadSegmentReady();
if (packetOutBufferConsumerControlBusIn.ready)
{
send_preload = true;
}
if (send_preload && buffer_calc.LoadSegmentReady())
{
packetOutBus.data_length = buffer_calc.MetadataCurrentLoadSegment().total_len;
packetOutBus.ip_dst_addr_0 = buffer_calc.MetadataCurrentLoadSegment().ip_dst_addr_0;
packetOutBus.ip_dst_addr_1 = buffer_calc.MetadataCurrentLoadSegment().ip_dst_addr_1;
packetOutBus.ip_src_addr_0 = buffer_calc.MetadataCurrentLoadSegment().ip_src_addr_0;
packetOutBus.ip_src_addr_1 = buffer_calc.MetadataCurrentLoadSegment().ip_src_addr_1;
long frame_number = buffer_calc.MetadataCurrentLoadSegment().frame_number;
packetOutBus.frame_number = frame_number;
packetOutBus.fragment_offset = 0;
uint ip_id = buffer_calc.MetadataCurrentLoadSegment().ip_id;
packetOutBus.ip_id = ip_id;
packetOutBus.protocol = buffer_calc.MetadataCurrentLoadSegment().protocol;
int addr = buffer_calc.LoadData();
byte data = send_buffer[addr].data;
packetOutBus.data = data;
packetOutBufferProducerControlBusOut.valid = true;
packetOutBufferProducerControlBusOut.bytes_left = send_buffer[addr].length;
buffer_calc.FinishReadingCurrentLoadSegment();
send_preload = false;
Logging.log.Info($"Sending: data: 0x{data:X2} ip_id: 0x{ip_id:X2} buffer_addr: {addr} frame_number: {frame_number} bytes_left: {send_buffer[addr].length}");
}
}