【tests/ip/test_ip_packet.py】 Failed: Received 0 packets in rx

[Wlyy0314]

Description ./run_tests.sh -n vms-kvm-t0 -d vlab-01 -c ip/test_ip_packet.py -f vtestbed.csv -i veos_vtb

Steps to reproduce the issue: 1. 2. 3.

Describe the results you received:

Failed: Received 0 packets in rx, not in expected range Describe the results you expected:

self = <tests.ip.test_ip_packet.TestIPPacket object at 0x7f407004e690> duthost = ptfadapter = common_param = ([(u'10.0.0.61', [u'Ethernet120']), (u'10.0.0.63', [u'Ethernet124'])], u'PortChannel103', True, 30, {u'PortChannel101'..., u'PortChannel104': [u'Ethernet124']}, {'Ethernet0': 0, 'Ethernet100': 25, 'Ethernet104': 26, 'Ethernet108': 27, ...})

def test_forward_ip_packet_with_0x0000_chksum(self, duthost, ptfadapter, common_param):
    # GIVEN a ip packet with checksum 0x0000(compute from scratch)
    # WHEN send the packet to DUT
    # THEN DUT should forward it as normal ip packet

    (peer_ip_ifaces_pair, rif_rx_ifaces, rif_support, ptf_port_idx, pc_ports_map, ptf_indices) = common_param
    pkt = testutils.simple_ip_packet(
        eth_dst=duthost.facts["router_mac"],
        eth_src=ptfadapter.dataplane.get_mac(0, ptf_port_idx),
        pktlen=1246,
        ip_src="10.250.136.195",
        ip_dst="10.156.94.34",
        ip_proto=47,
        ip_tos=0x84,
        ip_id=0,
        ip_ihl=5,
        ip_ttl=121,
    )
    pkt.payload.flags = 2
    exp_pkt = pkt.copy()
    exp_pkt.payload.ttl = 120
    exp_pkt.payload.chksum = 0x0100
    exp_pkt = mask.Mask(exp_pkt)
    exp_pkt.set_do_not_care_scapy(packet.Ether, 'dst')
    exp_pkt.set_do_not_care_scapy(packet.Ether, 'src')

    out_rif_ifaces, out_ifaces = TestIPPacket.parse_interfaces(duthost.command("show ip route 10.156.94.34")["stdout_lines"],
                                               pc_ports_map)
    logger.info("out_rif_ifaces: {}, out_ifaces: {}".format(out_rif_ifaces, out_ifaces))
    out_ptf_indices = map(lambda iface: ptf_indices[iface], out_ifaces)

    duthost.command("portstat -c")
    if rif_support:
        duthost.command("sonic-clear rifcounters")
    ptfadapter.dataplane.flush()

    testutils.send(ptfadapter, ptf_port_idx, pkt, self.PKT_NUM)
    time.sleep(5)
    match_cnt = testutils.count_matched_packets_all_ports(ptfadapter, exp_pkt, ports=out_ptf_indices)

    portstat_out = parse_portstat(duthost.command("portstat")["stdout_lines"])
    if rif_support:
        rif_counter_out = TestIPPacket.parse_rif_counters(duthost.command("show interfaces counters rif")["stdout_lines"])

    # In different platforms, IP packets with specific checksum will be dropped in different layer
    # We use both layer 2 counter and layer 3 counter to check where packet are dropped
    rx_ok = int(portstat_out[peer_ip_ifaces_pair[0][1][0]]["rx_ok"].replace(",", ""))
    rx_drp = int(portstat_out[peer_ip_ifaces_pair[0][1][0]]["rx_drp"].replace(",", ""))
    rx_err = int(rif_counter_out[rif_rx_ifaces]["rx_err"].replace(",", "")) if rif_support else 0
    tx_ok = TestIPPacket.sum_ifaces_counts(portstat_out, out_ifaces, "tx_ok")
    tx_drp = TestIPPacket.sum_ifaces_counts(portstat_out, out_ifaces, "tx_drp")
    tx_err = TestIPPacket.sum_ifaces_counts(rif_counter_out, out_rif_ifaces, "tx_err") if rif_support else 0

  pytest_assert(rx_ok >= self.PKT_NUM_MIN, "Received {} packets in rx, not in expected range".format(rx_ok))

E Failed: Received 0 packets in rx, not in expected range

common_param = ([(u'10.0.0.61', [u'Ethernet120']), (u'10.0.0.63', [u'Ethernet124'])], u'PortChannel103', True, 30, {u'PortChannel101'..., u'PortChannel104': [u'Ethernet124']}, {'Ethernet0': 0, 'Ethernet100': 25, 'Ethernet104': 26, 'Ethernet108': 27, ...}) duthost = exp_pkt = <ptf.mask.Mask instance at 0x7f406e235d70> match_cnt = 682 out_ifaces = [u'Ethernet112', u'Ethernet116', u'Ethernet120', u'Ethernet124'] out_ptf_indices = [28, 29, 30, 31] out_rif_ifaces = ['PortChannel101', 'PortChannel102', 'PortChannel103', 'PortChannel104'] pc_ports_map = {u'PortChannel101': [u'Ethernet112'], u'PortChannel102': [u'Ethernet116'], u'PortChannel103': [u'Ethernet120'], u'PortChannel104': [u'Ethernet124']} peer_ip_ifaces_pair = [(u'10.0.0.61', [u'Ethernet120']), (u'10.0.0.63', [u'Ethernet124'])] pkt = <Ether dst=52:54:00:e8:45:75 src=aa:d7:77:94:65:1e type=IPv4 |<IP ihl=5 tos=...9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb' |>>> portstat_out = {'Ethernet0': {'rx_bps': '0.00 B/s', 'rx_drp': '0', 'rx_err': '0', 'rx_ok': '0', ...}, 'Ethernet100': {'rx_bps': '0.00...: '0', 'rx_ok': '0', ...}, 'Ethernet108': {'rx_bps': '0.00 B/s', 'rx_drp': '0', 'rx_err': '0', 'rx_ok': '0', ...}, ...} ptf_indices = {'Ethernet0': 0, 'Ethernet100': 25, 'Ethernet104': 26, 'Ethernet108': 27, ...} ptf_port_idx = 30 ptfadapter = rif_counter_out = {'PortChannel101': {'rx_bps': '0.00 B/s', 'rx_err': '0', 'rx_ok': '0', 'rx_pps': '0.00/s', ...}, 'PortChannel102': {'r...': '0.00/s', ...}, 'PortChannel104': {'rx_bps': '0.00 B/s', 'rx_err': '0', 'rx_ok': '0', 'rx_pps': '0.00/s', ...}, ...} rif_rx_ifaces = u'PortChannel103' rif_support = True rx_drp = 0 rx_err = 0 rx_ok = 0 self = <tests.ip.test_ip_packet.TestIPPacket object at 0x7f407004e690> tx_drp = 0 tx_err = 0 tx_ok = 0

ip/test_ip_packet.py:202: Failed

Additional information you deem important:

**Output of `show version`:**

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**Attach debug file `sudo generate_dump`:**

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[Wlyy0314]

@wangxin When running this test case, it always reports that the number of messages received is 0. What configuration should be done to run this test case？

[yejianquan]

Hi @Wlyy0314 Currently, ip/test_ip_packet.py can't be run on KVM testbed.

Sample: https://www.testbed-tools.org/scheduler/testplan/9890