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import socket
import unittest
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, ICMP
import six
from framework import VppTestCase, VppTestRunner, running_extended_tests
from remote_test import RemoteClass, RemoteVppTestCase
from vpp_memif import MEMIF_MODE, MEMIF_ROLE, remove_all_memif_vpp_config, \
VppSocketFilename, VppMemif
class TestMemif(VppTestCase):
""" Memif Test Case """
@classmethod
def setUpClass(cls):
# fork new process before client connects to VPP
cls.remote_test = RemoteClass(RemoteVppTestCase)
cls.remote_test.start_remote()
cls.remote_test.set_request_timeout(10)
super(TestMemif, cls).setUpClass()
cls.remote_test.setUpClass(cls.tempdir)
cls.create_pg_interfaces(range(1))
for pg in cls.pg_interfaces:
pg.config_ip4()
pg.admin_up()
pg.resolve_arp()
@classmethod
def tearDownClass(cls):
cls.remote_test.tearDownClass()
cls.remote_test.quit_remote()
for pg in cls.pg_interfaces:
pg.unconfig_ip4()
pg.set_table_ip4(0)
pg.admin_down()
super(TestMemif, cls).tearDownClass()
def tearDown(self):
remove_all_memif_vpp_config(self)
remove_all_memif_vpp_config(self.remote_test)
super(TestMemif, self).tearDown()
def _check_socket_filename(self, dump, socket_id, filename):
for d in dump:
if (d.socket_id == socket_id) and (
d.socket_filename.rstrip(b"\0") == filename):
return True
return False
def test_memif_socket_filename_add_del(self):
""" Memif socket filenale add/del """
# dump default socket filename
dump = self.vapi.memif_socket_filename_dump()
self.assertTrue(
self._check_socket_filename(
dump, 0, b"%s/memif.sock" % six.ensure_binary(
self.tempdir, encoding='utf-8')))
memif_sockets = []
# existing path
memif_sockets.append(
VppSocketFilename(
self, 1, b"%s/memif1.sock" % six.ensure_binary(
self.tempdir, encoding='utf-8')))
# default path (test tempdir)
memif_sockets.append(
VppSocketFilename(
self,
2,
b"memif2.sock",
add_default_folder=True))
# create new folder in default folder
memif_sockets.append(
VppSocketFilename(
self,
3,
b"sock/memif3.sock",
add_default_folder=True))
for sock in memif_sockets:
sock.add_vpp_config()
dump = sock.query_vpp_config()
self.assertTrue(
self._check_socket_filename(
dump,
sock.socket_id,
sock.socket_filename))
for sock in memif_sockets:
sock.remove_vpp_config()
dump = self.vapi.memif_socket_filename_dump()
self.assertTrue(
self._check_socket_filename(
dump, 0, b"%s/memif.sock" % six.ensure_binary(
self.tempdir, encoding='utf-8')))
def _create_delete_test_one_interface(self, memif):
memif.add_vpp_config()
dump = memif.query_vpp_config()
self.assertTrue(dump)
self.assertEqual(dump.sw_if_index, memif.sw_if_index)
self.assertEqual(dump.role, memif.role)
self.assertEqual(dump.mode, memif.mode)
if (memif.socket_id is not None):
self.assertEqual(dump.socket_id, memif.socket_id)
memif.remove_vpp_config()
dump = memif.query_vpp_config()
self.assertFalse(dump)
def _connect_test_one_interface(self, memif):
self.assertTrue(memif.wait_for_link_up(5))
dump = memif.query_vpp_config()
if memif.role == MEMIF_ROLE.SLAVE:
self.assertEqual(dump.ring_size, memif.ring_size)
self.assertEqual(dump.buffer_size, memif.buffer_size)
else:
self.assertEqual(dump.ring_size, 1)
self.assertEqual(dump.buffer_size, 0)
def _connect_test_interface_pair(self, memif0, memif1):
memif0.add_vpp_config()
memif1.add_vpp_config()
memif0.admin_up()
memif1.admin_up()
self._connect_test_one_interface(memif0)
self._connect_test_one_interface(memif1)
memif0.remove_vpp_config()
memif1.remove_vpp_config()
def test_memif_create_delete(self):
""" Memif create/delete interface """
memif = VppMemif(self, MEMIF_ROLE.SLAVE, MEMIF_MODE.ETHERNET)
self._create_delete_test_one_interface(memif)
memif.role = MEMIF_ROLE.MASTER
self._create_delete_test_one_interface(memif)
def test_memif_create_custom_socket(self):
""" Memif create with non-default socket filename """
memif_sockets = []
# existing path
memif_sockets.append(
VppSocketFilename(
self, 1, b"%s/memif1.sock" % six.ensure_binary(
self.tempdir, encoding='utf-8')))
# default path (test tempdir)
memif_sockets.append(
VppSocketFilename(
self,
2,
b"memif2.sock",
add_default_folder=True))
# create new folder in default folder
memif_sockets.append(
VppSocketFilename(
self,
3,
b"sock/memif3.sock",
add_default_folder=True))
memif = VppMemif(self, MEMIF_ROLE.SLAVE, MEMIF_MODE.ETHERNET)
for sock in memif_sockets:
sock.add_vpp_config()
memif.socket_id = sock.socket_id
memif.role = MEMIF_ROLE.SLAVE
self._create_delete_test_one_interface(memif)
memif.role = MEMIF_ROLE.MASTER
self._create_delete_test_one_interface(memif)
def test_memif_connect(self):
""" Memif connect """
memif = VppMemif(self, MEMIF_ROLE.SLAVE, MEMIF_MODE.ETHERNET,
ring_size=1024, buffer_size=2048)
remote_socket = VppSocketFilename(self.remote_test, 1,
b"%s/memif.sock" % six.ensure_binary(
self.tempdir, encoding='utf-8'))
remote_socket.add_vpp_config()
remote_memif = VppMemif(self.remote_test, MEMIF_ROLE.MASTER,
MEMIF_MODE.ETHERNET, socket_id=1,
ring_size=1024, buffer_size=2048)
self._connect_test_interface_pair(memif, remote_memif)
memif.role = MEMIF_ROLE.MASTER
remote_memif.role = MEMIF_ROLE.SLAVE
self._connect_test_interface_pair(memif, remote_memif)
def _create_icmp(self, pg, memif, num):
pkts = []
for i in range(num):
pkt = (Ether(dst=pg.local_mac, src=pg.remote_mac) /
IP(src=pg.remote_ip4, dst=memif.ip4_addr) /
ICMP(id=memif.if_id, type='echo-request', seq=i))
pkts.append(pkt)
return pkts
def _verify_icmp(self, pg, memif, rx, seq):
ip = rx[IP]
self.assertEqual(ip.src, memif.ip4_addr)
self.assertEqual(ip.dst, pg.remote_ip4)
self.assertEqual(ip.proto, 1)
icmp = rx[ICMP]
self.assertEqual(icmp.type, 0) # echo-reply
self.assertEqual(icmp.id, memif.if_id)
self.assertEqual(icmp.seq, seq)
def test_memif_ping(self):
""" Memif ping """
memif = VppMemif(self, MEMIF_ROLE.SLAVE, MEMIF_MODE.ETHERNET)
remote_socket = VppSocketFilename(self.remote_test, 1,
b"%s/memif.sock" % six.ensure_binary(
self.tempdir, encoding='utf-8'))
remote_socket.add_vpp_config()
remote_memif = VppMemif(self.remote_test, MEMIF_ROLE.MASTER,
MEMIF_MODE.ETHERNET, socket_id=1)
memif.add_vpp_config()
memif.config_ip4()
memif.admin_up()
remote_memif.add_vpp_config()
remote_memif.config_ip4()
remote_memif.admin_up()
self.assertTrue(memif.wait_for_link_up(5))
self.assertTrue(remote_memif.wait_for_link_up(5))
# add routing to remote vpp
dst_addr = socket.inet_pton(socket.AF_INET, self.pg0._local_ip4_subnet)
dst_addr_len = 24
next_hop_addr = socket.inet_pton(socket.AF_INET, memif.ip4_addr)
self.remote_test.vapi.ip_add_del_route(
dst_addr, dst_addr_len, next_hop_addr)
# create ICMP echo-request from local pg to remote memif
packet_num = 10
pkts = self._create_icmp(self.pg0, remote_memif, packet_num)
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = self.pg0.get_capture(packet_num, timeout=2)
seq = 0
for c in capture:
self._verify_icmp(self.pg0, remote_memif, c, seq)
seq += 1
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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