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TestUdpIpEthRx.py
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import os
import random
import logging
from scapy.all import *
from scapy.contrib.roce import *
import cocotb
from cocotb.clock import Clock
from cocotb.triggers import RisingEdge
import cocotb_test.simulator
from cocotbext.axi import AxiStreamBus, AxiStreamSource, AxiStreamSink, AxiStreamFrame
from TestUtils import *
MIN_PAYLOAD_LEN = 46
MAX_PAYLOAD_LEN = 2048
CASES_NUM = 1024
class UdpIpEthRxTester:
def __init__(
self, dut, cases_num, min_payload_len, max_payload_len, is_support_rdma
):
self.dut = dut
self.log = logging.getLogger("TestUdpIpEthRxTester")
self.log.setLevel(logging.DEBUG)
self.cases_num = cases_num
self.min_payload_len = min_payload_len
self.max_payload_len = max_payload_len
self.is_support_rdma = is_support_rdma
self.ref_udp_meta_buf = Queue(maxsize=self.cases_num)
self.ref_mac_meta_buf = Queue(maxsize=self.cases_num)
self.ref_data_stream_buf = Queue(maxsize=self.cases_num)
self.clock = self.dut.CLK
self.resetn = self.dut.RST_N
self.udp_config_src = UdpConfigSource(
UdpConfigBus.from_prefix(dut, "s_udp_config"),
self.clock,
self.resetn,
False,
)
self.axi_stream_src = AxiStreamSource(
AxiStreamBus.from_prefix(dut, "s_axis"), self.clock, self.resetn, False
)
self.axi_stream_src.log.setLevel(logging.WARNING)
self.data_stream_sink = AxiStreamSink(
AxiStreamBus.from_prefix(dut, "m_data_stream"),
self.clock,
self.resetn,
False,
)
self.data_stream_sink.log.setLevel(logging.WARNING)
self.udp_meta_sink = UdpIpMetaDataSink(
UdpIpMetaDataBus.from_prefix(dut, "m_udp_meta"),
self.clock,
self.resetn,
False,
)
self.mac_meta_sink = MacMetaDataSink(
MacMetaDataBus.from_prefix(dut, "m_mac_meta"),
self.clock,
self.resetn,
False,
)
async def gen_clock(self):
await cocotb.start(Clock(self.clock, 10, "ns").start())
self.log.info("Start generating clock")
async def gen_reset(self):
self.resetn.value = 0
await RisingEdge(self.clock)
await RisingEdge(self.clock)
await RisingEdge(self.clock)
self.resetn.value = 1
await RisingEdge(self.clock)
await RisingEdge(self.clock)
await RisingEdge(self.clock)
self.log.info("Complete Reset dut")
async def config(self):
self.local_mac = random.randbytes(MAC_ADDR_BYTE_NUM)
self.local_ip = random.randbytes(IP_ADDR_BYTE_NUM)
self.net_mask = random.randbytes(IP_ADDR_BYTE_NUM)
self.gate_way = random.randbytes(IP_ADDR_BYTE_NUM)
udpConfig = UdpConfigTransation()
udpConfig.mac_addr = int.from_bytes(self.local_mac, "big")
udpConfig.ip_addr = int.from_bytes(self.local_ip, "big")
udpConfig.net_mask = int.from_bytes(self.net_mask, "big")
udpConfig.gate_way = int.from_bytes(self.gate_way, "big")
await self.udp_config_src.send(udpConfig)
def gen_random_pkt(self):
src_mac = random.randbytes(MAC_ADDR_BYTE_NUM)
src_ip = random.randbytes(IP_ADDR_BYTE_NUM)
sport = random.randbytes(UDP_PORT_BYTE_NUM)
dport = random.randbytes(UDP_PORT_BYTE_NUM)
payload_size = random.randint(self.min_payload_len, self.max_payload_len - 1)
payload = random.randbytes(payload_size)
header = Ether(dst=str2mac(self.local_mac), src=str2mac(src_mac))
dst_ip_int = int.from_bytes(self.local_ip, "big")
src_ip_int = int.from_bytes(src_ip, "big")
header = header / IP(dst=ltoa(dst_ip_int), src=ltoa(src_ip_int))
header = header / UDP(
dport=int.from_bytes(dport, "big"),
sport=int.from_bytes(sport, "big"),
chksum=0,
)
if self.is_support_rdma:
header = header / BTH()
bind_layers(UDP, BTH)
packet = Ether(raw(header / Raw(payload)))
return packet
async def drive_dut_input(self):
for case_idx in range(self.cases_num):
packet = self.gen_random_pkt()
axi_frame = AxiStreamFrame(tdata=raw(packet))
await self.axi_stream_src.send(axi_frame)
mac_meta_trans = MacMetaDataTransaction()
mac_meta_trans.mac_addr = int.from_bytes(mac2str(packet[Ether].src), "big")
mac_meta_trans.eth_type = packet[Ether].type
self.ref_mac_meta_buf.put(mac_meta_trans)
udp_meta_trans = UdpIpMetaDataTransation()
udp_meta_trans.ip_addr = atol(packet[IP].src)
udp_meta_trans.dst_port = packet[UDP].dport
udp_meta_trans.src_port = packet[UDP].sport
payload = raw(packet[UDP].payload)
if self.is_support_rdma:
payload = payload[:-4]
udp_meta_trans.data_len = len(payload)
self.ref_udp_meta_buf.put(udp_meta_trans)
self.ref_data_stream_buf.put(payload)
self.log.info(f"Send Packet {case_idx}: {packet}")
async def check_mac_meta(self):
self.mac_meta_sink.clear()
for case_idx in range(self.cases_num):
dut_meta = await self.mac_meta_sink.recv()
ref_meta = self.ref_mac_meta_buf.get()
equal = is_mac_meta_equal(dut_meta, ref_meta)
if not equal:
self.log.error(f"Dut MacMetaData: {dut_meta}")
self.log.error(f"Ref MacMetaData: {ref_meta}")
assert equal, f"Test Case {case_idx}: check MacMetaData failed"
self.log.info(f"Test Case {case_idx}: Pass MacMetaData check")
async def check_udp_ip_meta(self):
self.udp_meta_sink.clear()
for case_idx in range(self.cases_num):
dut_meta = await self.udp_meta_sink.recv()
ref_meta = self.ref_udp_meta_buf.get()
equal = is_udp_ip_meta_equal(dut_meta, ref_meta)
if not equal:
self.log.error(f"Dut UdpIpMetaData: {dut_meta}")
self.log.error(f"Ref UdpIpMetaData: {ref_meta}")
assert equal, f"Test Case {case_idx}: check UdpIpMetaData failed"
self.log.info(f"Test Case {case_idx}: Pass UdpIpMetaData check")
async def check_data_stream(self):
for case_idx in range(self.cases_num):
dut_data_stream = await self.data_stream_sink.recv()
dut_data_stream = bytes(dut_data_stream.tdata)
ref_data_stream = self.ref_data_stream_buf.get()
if dut_data_stream != ref_data_stream:
self.log.error(f"Dut DataStream Size {len(dut_data_stream)}")
dut_data_hex = dut_data_stream.hex("-")
self.log.error(f"Dut DataStream: {dut_data_hex}")
self.log.error(f"Ref DataStream Size {len(ref_data_stream)}")
ref_data_hex = ref_data_stream.hex("-")
self.log.error(f"Ref DataStream: {ref_data_hex}")
self.log.error(f"Test Case {case_idx}: check DataStream failed")
assert dut_data_stream == ref_data_stream
self.log.info(f"Test Case {case_idx}: Pass DataStream check")
async def check_dut_output(self):
check_mac_meta = await cocotb.start(self.check_mac_meta())
check_udp_ip_meta = await cocotb.start(self.check_udp_ip_meta())
check_data_stream = await cocotb.start(self.check_data_stream())
await check_data_stream
@cocotb.test(timeout_time=1000000000, timeout_unit="ns")
async def runUdpIpEthRxTester(dut):
support_rdma = os.getenv("SUPPORT_RDMA")
is_support_rdma = support_rdma == "True"
tester = UdpIpEthRxTester(
dut, CASES_NUM, MIN_PAYLOAD_LEN, MAX_PAYLOAD_LEN, is_support_rdma
)
await tester.gen_clock()
await tester.gen_reset()
await tester.config()
drive_thread = cocotb.start_soon(tester.drive_dut_input())
check_thread = cocotb.start_soon(tester.check_dut_output())
tester.log.info("Start testing!")
await check_thread
tester.log.info(f"Pass all {tester.cases_num} testcases successfully")
def test_UdpIpEthRx(support_rdma):
toplevel = "mkRawUdpIpEthRx"
module = os.path.splitext(os.path.basename(__file__))[0]
test_dir = os.path.abspath(os.path.dirname(__file__))
sim_build = os.path.join(test_dir, "build")
v_top_file = os.path.join(test_dir, "generated", f"{toplevel}.v")
verilog_sources = [v_top_file]
extra_env = {"SUPPORT_RDMA": support_rdma}
cocotb_test.simulator.run(
toplevel=toplevel,
module=module,
verilog_sources=verilog_sources,
python_search=test_dir,
sim_build=sim_build,
timescale="1ns/1ps",
extra_env=extra_env,
)
if __name__ == "__main__":
assert len(sys.argv) == 2
support_rdma = sys.argv[1]
test_UdpIpEthRx(support_rdma)