Esempio n. 1
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class VirtualTapTestCase(unittest.TestCase):
    def _tap_exists_ifconfig(self):
        (ret, stdout, stderr) = _run_command(["/sbin/ifconfig", self.tap.name])
        return ret == 0

    def _get_mtu_ifconfig(self):
        (ret, stdout, stderr) = _run_command(["/sbin/ifconfig", self.tap.name])
        self.assertEqual(stderr, "")
        self.assertEqual(ret, 0)
        remtu = re.compile("MTU:(\d+)+\ ")
        mtu = int(re.search(remtu, stdout).group(1))
        return mtu

    def setUp(self):
        self.tap = VirtualTap("testtap%d")

    def test_open_close_tap(self):
        self.tap.open()
        self.assertIsNotNone(self.tap.fd)
        self.assertEqual(self.tap.fd, self.tap.fileno())
        self.assertTrue(self.tap.name.startswith("testtap"))
        self.assertTrue(iface_exists(self.tap.name))
        self.tap.close()
        self.assertFalse(iface_exists(self.tap.name))

    def test_set_mtu(self):
        self.tap.open()
        self.assertGreater(iface_mtu(self.tap.name), 0)
        self.tap.set_mtu(1491)
        self.assertEqual(iface_mtu(self.tap.name), 1491)
        self.tap.close()
Esempio n. 2
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class VirtualTapTestCase(unittest.TestCase):
    def _tap_exists_ifconfig(self):
        (ret, stdout, stderr) = _run_command(["/sbin/ifconfig", self.tap.name])
        return ret == 0

    def _get_mtu_ifconfig(self):
        (ret, stdout, stderr) = _run_command(["/sbin/ifconfig", self.tap.name])
        self.assertEqual(stderr, "")
        self.assertEqual(ret, 0)
        remtu = re.compile("MTU:(\d+)+\ ")
        mtu = int(re.search(remtu, stdout).group(1))
        return mtu

    def setUp(self):
        self.tap = VirtualTap("testtap%d")

    def test_open_close_tap(self):
        self.tap.open()
        self.assertIsNotNone(self.tap.fd)
        self.assertEqual(self.tap.fd, self.tap.fileno())
        self.assertTrue(self.tap.name.startswith("testtap"))
        self.assertTrue(iface_exists(self.tap.name))
        self.tap.close()
        self.assertFalse(iface_exists(self.tap.name))

    def test_set_mtu(self):
        self.tap.open()
        self.assertGreater(iface_mtu(self.tap.name), 0)
        self.tap.set_mtu(1491)
        self.assertEqual(iface_mtu(self.tap.name), 1491)
        self.tap.close()
Esempio n. 3
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    def _attach_to_network(self, tapname, vni, macttl, targetip, targetport):
        if tapname in self.vnet_tapname_map:
            vnet = self.vnet_tapname_map[tapname]
            msg = ("Ignoring network addition request for tapname %s,"
                   " already in use for vnet %r" % (tapname, vnet))
            raise ValueError(msg)
        tap = VirtualTap(name=tapname)
        tap.open()
        self.taps.append(tap)
        # Set tap in non-blocking mode
        fcntl.fcntl(tap, fcntl.F_SETFL, os.O_NONBLOCK)

        vn = self._create_vnet(vni=vni, macttl=macttl)
        vn.targets = [(targetip, int(targetport))]
        vn.socket = self.socket
        vn.tap = tap
        tap.vnet = vn
        self.vnet_tapname_map[tapname] = vn

        for t in vn.targets:
            if _ip_is_multicast(t[0]):
                _join_mcast_group(vn.socket, t[0], self.mcastif)

        logging.info("Joined new network, vnet %r over tap %r",
                      tap.vnet, tap)
Esempio n. 4
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    def _attach_to_network(self, tapname, vni, macttl, targetip, targetport):
        if tapname in self.vnet_tapname_map:
            vnet = self.vnet_tapname_map[tapname]
            msg = ("Ignoring network addition request for tapname %s,"
                   " already in use for vnet %r" % (tapname, vnet))
            raise ValueError(msg)
        tap = VirtualTap(name=tapname)
        tap.open()
        self.taps.append(tap)
        # Set tap in non-blocking mode
        fcntl.fcntl(tap, fcntl.F_SETFL, os.O_NONBLOCK)

        vn = self._create_vnet(vni=vni, macttl=macttl)
        vn.targets = [(targetip, int(targetport))]
        vn.socket = self.socket
        vn.tap = tap
        tap.vnet = vn
        self.vnet_tapname_map[tapname] = vn

        for t in vn.targets:
            if _ip_is_multicast(t[0]):
                _join_mcast_group(vn.socket, t[0], self.mcastif)

        logging.info("Joined new network, vnet %r over tap %r", tap.vnet, tap)