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)