# SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD # SPDX-License-Identifier: CC0-1.0 import contextlib import logging import os import socket from multiprocessing import Pipe, Process, connection from typing import Iterator import pytest from pytest_embedded import Dut from scapy.all import Ether, raw ETH_TYPE = 0x3300 class EthTestIntf(object): def __init__(self, eth_type: int, my_if: str = ''): self.target_if = '' self.eth_type = eth_type self.find_target_if(my_if) def find_target_if(self, my_if: str = '') -> None: # try to determine which interface to use netifs = os.listdir('/sys/class/net/') # order matters - ETH NIC with the highest number is connected to DUT on CI runner netifs.sort(reverse=True) logging.info('detected interfaces: %s', str(netifs)) for netif in netifs: # if no interface defined, try to find it automatically if my_if == '': if netif.find('eth') == 0 or netif.find('enp') == 0 or netif.find('eno') == 0: self.target_if = netif break else: if netif.find(my_if) == 0: self.target_if = my_if break if self.target_if == '': raise RuntimeError('network interface not found') logging.info('Use %s for testing', self.target_if) @contextlib.contextmanager def configure_eth_if(self, eth_type:int=0) -> Iterator[socket.socket]: if eth_type == 0: eth_type = self.eth_type so = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(eth_type)) so.bind((self.target_if, 0)) try: yield so finally: so.close() def send_eth_packet(self, mac: str) -> None: with self.configure_eth_if() as so: so.settimeout(10) payload = bytearray(1010) for i, _ in enumerate(payload): payload[i] = i & 0xff eth_frame = Ether(dst=mac, src=so.getsockname()[4], type=self.eth_type) / raw(payload) try: so.send(raw(eth_frame)) except Exception as e: raise e def recv_resp_poke(self, mac:str, i:int=0) -> None: eth_type_ctrl = self.eth_type + 1 with self.configure_eth_if(eth_type_ctrl) as so: so.settimeout(30) for _ in range(10): try: eth_frame = Ether(so.recv(60)) except Exception as e: raise e if mac == eth_frame.src and eth_frame.load[0] == 0xfa: if eth_frame.load[1] != i: raise RuntimeError('Missed Poke Packet') logging.info('Poke Packet received...') eth_frame.dst = eth_frame.src eth_frame.src = so.getsockname()[4] eth_frame.load = bytes.fromhex('fb') # POKE_RESP code so.send(raw(eth_frame)) break else: logging.warning('Unexpected Control packet') logging.warning('Expected Ctrl command: 0xfa, actual: 0x%x', eth_frame.load[0]) logging.warning('Source MAC %s', eth_frame.src) else: raise RuntimeError('No Poke Packet!') def traffic_gen(self, mac: str, pipe_rcv:connection.Connection) -> None: with self.configure_eth_if() as so: payload = bytes.fromhex('ff') # DUMMY_TRAFFIC code payload += bytes(1485) eth_frame = Ether(dst=mac, src=so.getsockname()[4], type=self.eth_type) / raw(payload) try: while pipe_rcv.poll() is not True: so.send(raw(eth_frame)) except Exception as e: raise e def actual_test(dut: Dut) -> None: target_if = EthTestIntf(ETH_TYPE) dut.expect_exact('Press ENTER to see the list of tests') dut.write('\n') dut.expect_exact('Enter test for running.') with target_if.configure_eth_if() as so: so.settimeout(30) dut.write('"ethernet_broadcast_transmit"') res = dut.expect( r'DUT MAC: ([0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2})' ) # wait for POKE msg to be sure the switch already started forwarding the port's traffic # (there might be slight delay due to the RSTP execution) dut_mac = res.group(1).decode('utf-8') target_if.recv_resp_poke(mac=dut_mac) for _ in range(10): eth_frame = Ether(so.recv(1024)) if dut_mac == eth_frame.src: break else: raise RuntimeError('No broadcast received from expected DUT MAC addr') for i in range(0, 1010): if eth_frame.load[i] != i & 0xff: raise RuntimeError('Packet content mismatch') dut.expect_unity_test_output() dut.expect_exact("Enter next test, or 'enter' to see menu") dut.write('"recv_pkt"') res = dut.expect( r'DUT MAC: ([0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2})' ) dut_mac = res.group(1).decode('utf-8') # wait for POKE msg to be sure the switch already started forwarding the port's traffic # (there might be slight delay due to the RSTP execution) target_if.recv_resp_poke(mac=dut_mac) target_if.send_eth_packet('ff:ff:ff:ff:ff:ff') # broadcast frame target_if.send_eth_packet('01:00:00:00:00:00') # multicast frame target_if.send_eth_packet(mac=dut_mac) # unicast frame dut.expect_unity_test_output(extra_before=res.group(1)) dut.expect_exact("Enter next test, or 'enter' to see menu") dut.write('"start_stop_stress_test"') res = dut.expect( r'DUT MAC: ([0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2})' ) dut_mac = res.group(1).decode('utf-8') # Start/stop under heavy Tx traffic for tx_i in range(10): target_if.recv_resp_poke(dut_mac, tx_i) dut.expect_exact('Ethernet stopped') for rx_i in range(10): target_if.recv_resp_poke(dut_mac, rx_i) # Start/stop under heavy Rx traffic pipe_rcv, pipe_send = Pipe(False) tx_proc = Process(target=target_if.traffic_gen, args=(dut_mac, pipe_rcv, )) tx_proc.start() dut.expect_exact('Ethernet stopped') pipe_send.send(0) # just send some dummy data tx_proc.join(5) if tx_proc.exitcode is None: tx_proc.terminate() dut.expect_unity_test_output(extra_before=res.group(1)) @pytest.mark.esp32 @pytest.mark.eth_ip101 @pytest.mark.parametrize('config', [ 'ip101', ], indirect=True) def test_esp_eth_ip101(dut: Dut) -> None: actual_test(dut) @pytest.mark.esp32 @pytest.mark.eth_lan8720 @pytest.mark.parametrize('config', [ 'lan8720', ], indirect=True) def test_esp_eth_lan8720(dut: Dut) -> None: actual_test(dut)