dts--tests(二)

rxtx_callbacks.py

"""
DPDK Test suite.
Test Rxtx_Callbacks.
"""
import utils
import string
import time
from test_case import TestCase
from plotting import Plotting
from settings import HEADER_SIZE
from etgen import IxiaPacketGenerator
from packet import Packet, sniff_packets, load_sniff_packets

class TestRxtxCallbacks(TestCase):

    def set_up_all(self):
        """
        Run at the start of each test suite.
        timer prerequistites
        """
        self.dut_ports = self.dut.get_ports(self.nic)
        '''
        self.nic = 'niantic' ;
        self.dut_ports = [0, 1, 2, 3]
        self.mac = '90:e2:ba:4a:53:28'
        '''
        self.verify(len(self.dut_ports) >= 2, "Insufficient ports")

        cores = self.dut.get_core_list("1S/2C/1T")
        self.coremask = utils.create_mask(cores)

        self.mac = self.dut.get_mac_address(self.dut_ports[0])
        self.path = "./examples/rxtx_callbacks/build/rxtx_callbacks"

        out = self.dut.build_dpdk_apps("./examples/rxtx_callbacks")
        self.verify("Error" not in out, "compilation error 1")
        self.verify("No such file" not in out, "compilation error 2")

    def set_up(self):
        """
        Run before each test case.
        """
        pass

    def test_rxtx_callbacks(self):
        cmd = self.path + " -c %s -n %d " % (self.coremask,self.dut.get_memory_channels())
        self.dut.send_expect(cmd,"forwarding packets",60)

        self.iface_port0 = self.tester.get_interface(self.tester.get_local_port(self.dut_ports[0]))
        self.iface_port1 = self.tester.get_interface(self.tester.get_local_port(self.dut_ports[1]))

        '''
        self.dut_ports[0] : 0
        self.tester.get_local_port(self.dut_ports[0]) : 2
        self.tester.get_interface(self.tester.get_local_port(self.dut_ports[0])) : 'ens261f0'

        self.dut_ports[1] : 1
        self.tester.get_local_port(self.dut_ports[1]) : 3
        self.tester.get_interface(self.tester.get_local_port(self.dut_ports[1])) : 'ens261f1'
        '''

        self.inst_port1 = sniff_packets(self.iface_port1)    #self.inst_port1 : '1539677920.09'

        self.scapy_send_packet(self.iface_port0)
        '''
        tester: scapy
        tester: sendp([Ether(dst="90:e2:ba:4a:53:28")/IP()/UDP()/Raw('X'*18)], iface="ens261f0")
        tester: exit()
        '''
        out_port1 = self.get_tcpdump_package(self.inst_port1)
        '''
        1 packet captured
        1 packet received by filter
        0 packets dropped by kernel
        '''
        self.verify(self.mac in out_port1, "Wrong: can't get package at %s " % self.inst_port1)

    def scapy_send_packet(self,iface):
        """
        Send a packet to port
        """
        self.tester.scapy_append('sendp([Ether(dst="%s")/IP()/UDP()/Raw(\'X\'*18)], iface="%s")' % (self.mac, iface))
        self.tester.scapy_execute()

    def get_tcpdump_package(self,inst):
        pkts = load_sniff_packets(inst)
        dsts = []
        for packet in pkts:
            dst = packet.strip_element_layer2("dst")
            dsts.append(dst)
        #[''90:e2:ba:4a:53:28'']
        return dsts

    def tear_down(self):
        """
        Run after each test case.
        """
        self.dut.kill_all()
        time.sleep(2)

    def tear_down_all(self):
        """
        Run after each test suite.
        """
        pass

#测试的目的:

Send one packet on Port0,check the port1 receive packet.
It receive one packet that the port0 send.

TESTS_RESULT:PASS
    1 packet captured
    1 packet received by filter
    0 packets dropped by kernel

Result FAILED: "Wrong: can't get package at 1530862720.26 "
    0 packets captured
    0 packets received by filter
    0 packets dropped by kernel

pdb调试信息:
    > /home/autoregression/changqing/tests/TestSuite_rxtx_callbacks.py(86)test_rxtx_callbacks()
    -> self.verify(self.mac in out_port1, "Wrong: can't get package at %s " % self.inst_port1)
    (Pdb) l
     81
     82             self.inst_port1 = sniff_packets(self.iface_port1)
     83             self.scapy_send_packet(self.iface_port0)
     84
     85             out_port1 = self.get_tcpdump_package(self.inst_port1)
     86  ->         self.verify(self.mac in out_port1, "Wrong: can't get package at %s " % self.inst_port1)
     87
     88
     89         def scapy_send_packet(self,iface):
     90             """
     91             Send a packet to port
    (Pdb) p out_port1
    ['90:e2:ba:4a:53:28']
    (Pdb) p self.iface_port0
    'p5p1'
    (Pdb) p self.iface_port1
    'p5p2'
    (Pdb) p self.mac
    '90:e2:ba:4a:53:28'
    (Pdb) p self.inst_port1
    '1530861577.19'

dut-tests

dut:
    #测试前编译:
    [root@localhost dpdk-changqing]# rm -rf ./app/test/test_resource_c.res.o
    [root@localhost dpdk-changqing]# rm -rf ./app/test/test_resource_tar.res.o
    [root@localhost dpdk-changqing]# rm -rf ./app/test/test_pci_sysfs.res.o
    [root@localhost dpdk-changqing]# make -j 70 -C ./examples/rxtx_callbacks
    make: Entering directory '/root/dpdk-changqing/examples/rxtx_callbacks'
      CC main.o
      LD rxtx_callbacks
      INSTALL-APP rxtx_callbacks
      INSTALL-MAP rxtx_callbacks.map
    make: Leaving directory '/root/dpdk-changqing/examples/rxtx_callbacks'

    EAL 启动成功
    [root@localhost dpdk-changqing]# ./examples/rxtx_callbacks/build/rxtx_callbacks -c 0x6 -n 4
    EAL: Detected 72 lcore(s)
    EAL: Detected 2 NUMA nodes
    EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
    EAL: Probing VFIO support...
    EAL: PCI device 0000:03:00.0 on NUMA socket 0
    EAL:   probe driver: 8086:1572 net_i40e
    EAL: PCI device 0000:03:00.1 on NUMA socket 0
    EAL:   probe driver: 8086:1572 net_i40e
    EAL: PCI device 0000:03:00.2 on NUMA socket 0
    EAL:   probe driver: 8086:1572 net_i40e
    EAL: PCI device 0000:03:00.3 on NUMA socket 0
    EAL:   probe driver: 8086:1572 net_i40e
    EAL: PCI device 0000:04:00.0 on NUMA socket 0
    EAL:   probe driver: 8086:10fb net_ixgbe
    EAL: PCI device 0000:04:00.1 on NUMA socket 0
    EAL:   probe driver: 8086:10fb net_ixgbe
    EAL: PCI device 0000:05:00.0 on NUMA socket 0
    EAL:   probe driver: 8086:1521 net_e1000_igb
    EAL: PCI device 0000:05:00.1 on NUMA socket 0
    EAL:   probe driver: 8086:1521 net_e1000_igb
    EAL: PCI device 0000:82:00.0 on NUMA socket 1
    EAL:   probe driver: 8086:10fb net_ixgbe
    EAL: PCI device 0000:82:00.1 on NUMA socket 1
    EAL:   probe driver: 8086:10fb net_ixgbe
    Port 0 MAC: 90 e2 ba 4a 53 28
    Port 1 MAC: 90 e2 ba 4a 53 29
    Port 2 MAC: 90 e2 ba 50 8d 68
    Port 3 MAC: 90 e2 ba 50 8d 69

    WARNING: Too much enabled lcores - App uses only 1 lcore
    WARNING, port 2 is on remote NUMA node to polling thread.
            Performance will not be optimal.
    WARNING, port 3 is on remote NUMA node to polling thread.
            Performance will not be optimal.

    Core 1 forwarding packets. [Ctrl+C to quit]

    #dut启动EAL,接口p5p2能够监听到p5p1发的包
tester:
    [root@dpdk-test37 ~]# scapy
    WARNING: No route found for IPv6 destination :: (no default route?)
    INFO: Can't import python-cryptography v1.7+. Disabled WEP decryption/encryption.
    INFO: Could not import python-cryptography.Computations for the "authenticator" field (RADIUS packets) and"Message-Authenticator" attribute value field are disabled.
    Welcome to Scapy (2.3.3.dev623)
    >>> sendp([Ether(dst="90:e2:ba:4a:53:28")/IP()/UDP()/Raw('X'*18)], iface="p5p1")
    .
    Sent 1 packets.

    [root@dpdk-test37 ~]# tcpdump -i p5p2
    tcpdump: WARNING: p5p1: no IPv4 address assigned
    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
    listening on p5p1, link-type EN10MB (Ethernet), capture size 65535 bytes
    15:58:56.181060 IP localhost.domain > localhost.domain: 22616 updateDA% [b2&3=0x5858] [22616a] [22616q] [22616n] [22616au][|domain]

    #dut启动EAL,接口p5p1能够监听到p5p2发的包
    [root@dpdk-test37 ~]#
    >>> sendp([Ether(dst="90:e2:ba:4a:53:28")/IP()/UDP()/Raw('X'*18)], iface="p5p2")
    [root@dpdk-test37 ~]# tcpdump -i p5p1
    tcpdump: WARNING: p5p1: no IPv4 address assigned
    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
    listening on p5p1, link-type EN10MB (Ethernet), capture size 65535 bytes
    15:58:56.181060 IP localhost.domain > localhost.domain: 22616 updateDA% [b2&3=0x5858] [22616a] [22616q] [22616n] [22616au][|domain]

    #dut退出启动EAL,接口p5p1无法监听到p5p2发的包
    dut:
    Ctrl+c to quit
    tester:
    >>> sendp([Ether(dst="90:e2:ba:4a:53:28")/IP()/UDP()/Raw('X'*18)], iface="p5p2")
    [root@dpdk-test37 ~]# tcpdump -i p5p1
    tcpdump: WARNING: p5p1: no IPv4 address assigned
    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
    listening on p5p1, link-type EN10MB (Ethernet), capture size 65535 bytes

总结:

    #开启EAL:./examples/rxtx_callbacks/build/rxtx_callbacks -c 0x6 -n 4
    接口p5p1能够监听到p5p2发的包,监听到p5p1发的包
    接口p5p2能够监听到p5p1发的包,监听到p5p2发的包
    #关闭EAL:Ctrl+c to quit
    接口p5p1能够监听到p5p1发的包,无法监听到p5p2发的包
    接口p5p2能够监听到p5p2发的包,无法监听到p5p1发的包