dpdklibs_udp_receiver Namespace Reference

Functions
	print_header (header, prefix="\t")
	dump_data (data)
	validate_ip (ctx, param, value)
	main (dump_packet, unpack_frames, words, count, ip, port, gap, frame_type)

Variables
int	N_STREAM = 128
int	FRAME_SIZE = 7200
int	FRAME_TS_GAP_BDE = 2048
int	FRAME_TS_GAP_TDE = 2000

Function Documentation

dump_data()

dpdklibs_udp_receiver.dump_data

(

data

)

Definition at line 24 of file dpdklibs_udp_receiver.py.

def dump_data(data):
    data2=data
 
    n_word = (len(data) // 8) +len(data) % 8
    for i in range(n_word):
        w = int.from_bytes(data[i*8:(i+1)*8], byteorder='little', signed=False)
        print(f"{i:04d} 0x{w:016x}")
 
 

main()

dpdklibs_udp_receiver.main	(		dump_packet,
			unpack_frames,
			words,
			count,
			ip,
			port,
			gap,
			frame_type )

Definition at line 56 of file dpdklibs_udp_receiver.py.

def main(dump_packet, unpack_frames, words, count, ip, port, gap, frame_type):
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 0)
 
    s.bind((ip, port))
 
    prev_stream = {}
    i=0
    dtstart = time.time()
    dtlast = dtstart
    sampling = 100000
    match frame_type:
        case 'wib':
            frame_class = fddetdataformats.WIBEthFrame
            port = port if not port is None else 0x4444
            gap = gap if not gap is None else FRAME_TS_GAP_BDE
            FRAME_SIZE = 7200
        case 'tde':
            frame_class = fddetdataformats.TDEEthFrame
            port = port if not port is None else 54323
            gap = gap if not gap is None else FRAME_TS_GAP_TDE
            FRAME_SIZE = 7200
        case 'daphne':
            frame_class = fddetdataformats.DAPHNEEthFrame
            port = port if not port is None else 0x4444
            # gap = gap if not gap is None else 2048
            FRAME_SIZE = 7456
 
 
            
    print('Receiver started')
    dtnow = time.time()
 
    while (count==None or i<count):
        # print(count, i)
        data, address = s.recvfrom(20000)
 
 
        header = detdataformats.DAQEthHeader(data)
 
        # hdr_id = header.stream_id
        hdr_id = (header.det_id, header.crate_id, header.slot_id, header.stream_id)
        
        # if hdr_id < N_STREAM:
        stream_ts = header.timestamp
        # print(hdr_id, header.seq_id, hex(stream_ts))
        if dump_packet:
 
            print('----')
            print(f'Frame (size {len(data)}) from (DetID, Crate, Slot, Stream) = (0x{header.det_id}, 0x{header.crate_id:x}, 0x{header.slot_id:x}, 0x{header.stream_id:x})')
            print(f'  Timestamp: 0x{header.timestamp:x}')
            print(f'  Seq ID: {header.seq_id}, Block length: {header.block_length*8:d} (0x{header.block_length:x})')
 
            print()
            dump_data(data[0:words*8])
            print()
 
        if hdr_id not in prev_stream:
            pass
        else:
            prev_strm_ts = prev_stream[hdr_id]
            if (not gap is None) and (stream_ts - prev_strm_ts) != gap:
                print(f'delta_ts {stream_ts-prev_strm_ts} for {hdr_id} ')
 
        
 
 
 
        if unpack_frames:
            print('----')
            print(f'Packet {i}')
 
            max_unpack = 512
            print()
            l = 0
            l_pkt = len(data)
            frames = []
            while l < l_pkt:
                
                d_blk = data[l:]
                # dump_data(d_blk[0:4*8])
                h = detdataformats.DAQEthHeader(d_blk)
                print(f"len(data) = {l_pkt} block_len = {h.block_length*8:d} 0x{h.block_length:x} [l = {l}]")
                l_frm = (h.block_length+1)*8
                frames += [d_blk[:l_frm]]
                
                l += l_frm # +1 for the header
 
            print(f"Scanning complete (scanned {l} over {l_pkt} bytes)")
 
 
            for j,f in enumerate(frames):
                print(f"Frame {j}")
                dump_data(f[:max_unpack*8])
 
        prev_stream[hdr_id] = stream_ts
 
 
        i+=1;
        if i%sampling ==0:
            dtlast=dtnow
            dtnow = time.time()
            avg_throughput = FRAME_SIZE*i/(1000000*(dtnow-dtstart))
            throughput = FRAME_SIZE*sampling/(1000000*(dtnow-dtlast))
 
            print(f'Received {i} packets ({sampling/(dtnow-dtlast):.2f} pps over {dtnow-dtlast:.2f}); throughput = {throughput:.3f} MB/s [avg = {avg_throughput:.3f} MB/s]')
            dtlast = dtnow
            print_header(header)
            for k,ts in prev_stream.items():
                if ts is None:
                    continue
                print(f"stream {k}: last_ts {ts}")
 
            # b = data
            # for i in rnage(len(b)//8):
            #     w = [f"{s:02x}" for s in b[8*i:8*(i+1)]]
            #     w.reverse()
            #     print("0x"+''.join(w))
 

print_header()

dpdklibs_udp_receiver.print_header	(		header,
			prefix = "\t" )

Definition at line 16 of file dpdklibs_udp_receiver.py.

def print_header(header,prefix="\t"):
    print(f'{prefix}Version: 0x{header.version:x}')
    print(f'{prefix}Detector ID: 0x{header.det_id:x}')
    print(f'{prefix}(Crate,Slot,Stream): (0x{header.crate_id:x},0x{header.slot_id:x},0x{header.stream_id:x})')
    print(f'{prefix}Timestamp: 0x{header.timestamp:x}')
    print(f'{prefix}Seq ID: {header.seq_id}') 
    print(f'{prefix}Block length: 0x{header.block_length:x}')
 

validate_ip()

dpdklibs_udp_receiver.validate_ip	(		ctx,
			param,
			value )

Definition at line 33 of file dpdklibs_udp_receiver.py.

def validate_ip(ctx, param, value):
    if value is None:
        return ''
    try:
        return str(ipaddress.ip_address(value))
    except ValueError:
        raise click.BadParameter(f"{value} is not a valid IP address.")
 
 
@click.command()
@click.option('-d', '--dump-packet', is_flag=True, default=False)
@click.option('-u', '--unpack-frames', is_flag=True, default=False)
@click.option('-w', '--words', type=int, default=8)
@click.option('-c', '--count', type=int, default=None)
@click.option(
    "--ip",
    default=None,
    help="IP address of the network interface host",
    callback=validate_ip,
)
@click.option('-p', '--port', type=int, default=0x4444)
@click.option('-g', '--gap', type=int, default=None)
@click.option('-f', '--frame-type', type=click.Choice(['wib', 'tde','daphne']), default=None)

Variable Documentation

FRAME_SIZE

int dpdklibs_udp_receiver.FRAME_SIZE = 7200

Definition at line 12 of file dpdklibs_udp_receiver.py.

FRAME_TS_GAP_BDE

int dpdklibs_udp_receiver.FRAME_TS_GAP_BDE = 2048

Definition at line 13 of file dpdklibs_udp_receiver.py.

FRAME_TS_GAP_TDE

int dpdklibs_udp_receiver.FRAME_TS_GAP_TDE = 2000

Definition at line 14 of file dpdklibs_udp_receiver.py.

N_STREAM

int dpdklibs_udp_receiver.N_STREAM = 128

Definition at line 11 of file dpdklibs_udp_receiver.py.