src/vlib/log.h


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/*
 * Copyright (c) 2018 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef included_vlib_log_h
#define included_vlib_log_h

#include <vppinfra/types.h>

typedef u32 vlib_log_class_t;

#define foreach_vlib_log_level \
  _(0, EMERG, emerg) \
  _(1, ALERT, alert) \
  _(2, CRIT, crit) \
  _(3, ERR, err) \
  _(4, WARNING, warn) \
  _(5, NOTICE, notice) \
  _(6, INFO, info) \
  _(7, DEBUG, debug) \
  _(8, DISABLED, disabled)

typedef enum
{
#define _(n,uc,lc) VLIB_LOG_LEVEL_##uc = n,
  foreach_vlib_log_level
#undef _
} vlib_log_level_t;


vlib_log_class_t vlib_log_register_class (char *vlass, char *subclass);
u32 vlib_log_get_indent ();
void vlib_log (vlib_log_level_t level, vlib_log_class_t class, char *fmt,
	       ...);

#define vlib_log_emerg(...) vlib_log(VLIB_LOG_LEVEL_EMERG, __VA_ARGS__)
#define vlib_log_alert(...) vlib_log(VLIB_LOG_LEVEL_ALERT, __VA_ARGS__)
#define vlib_log_crit(...) vlib_log(VLIB_LOG_LEVEL_CRIT, __VA_ARGS__)
#define vlib_log_err(...) vlib_log(VLIB_LOG_LEVEL_ERR, __VA_ARGS__)
#define vlib_log_warn(...) vlib_log(VLIB_LOG_LEVEL_WARNING, __VA_ARGS__)
#define vlib_log_notice(...) vlib_log(VLIB_LOG_LEVEL_NOTICE, __VA_ARGS__)
#define vlib_log_info(...) vlib_log(VLIB_LOG_LEVEL_INFO, __VA_ARGS__)
#define vlib_log_debug(...) vlib_log(VLIB_LOG_LEVEL_DEBUG, __VA_ARGS__)

#endif /* included_vlib_log_h */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
#!/usr/bin/env python

import unittest
from logging import *

from framework import VppTestCase, VppTestRunner
from vpp_ip_route import VppIpRoute, VppRoutePath
from vpp_pppoe_interface import VppPppoeInterface, VppPppoe6Interface
from vpp_papi_provider import L2_VTR_OP

from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.ppp import PPPoE, PPPoED, PPP
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from scapy.volatile import RandMAC, RandIP

from util import ppp, ppc, mactobinary
import socket


class TestPPPoE(VppTestCase):
    """ PPPoE Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestPPPoE, cls).setUpClass()

        cls.session_id = 1
        cls.dst_ip = "100.1.1.100"
        cls.dst_ipn = socket.inet_pton(socket.AF_INET, cls.dst_ip)

    def setUp(self):
        super(TestPPPoE, self).setUp()

        # create 2 pg interfaces
        self.create_pg_interfaces(range(3))

        for i in self.pg_interfaces:
            i.admin_up()
            i.config_ip4()
            i.resolve_arp()

    def tearDown(self):
        super(TestPPPoE, self).tearDown()

        self.logger.info(self.vapi.cli("show int"))
        self.logger.info(self.vapi.cli("show pppoe fib"))
        self.logger.info(self.vapi.cli("show pppoe session"))
        self.logger.info(self.vapi.cli("show ip fib"))
        self.logger.info(self.vapi.cli("show trace"))

        for i in self.pg_interfaces:
            i.unconfig_ip4()
            i.admin_down()

    def create_stream_pppoe_discovery(self, src_if, dst_if,
                                      client_mac, count=1):
        packets = []
        for i in range(count):
            # create packet info stored in the test case instance
            info = self.create_packet_info(src_if, dst_if)
            # convert the info into packet payload
            payload = self.info_to_payload(info)
            # create the packet itself
            p = (Ether(dst=src_if.local_mac, src=client_mac) /
                 PPPoED(sessionid=0) /
                 Raw(payload))
            # store a copy of the packet in the packet info
            info.data = p.copy()
            # append the packet to the list
            packets.append(p)

        # return the created packet list
        return packets

    def create_stream_pppoe_lcp(self, src_if, dst_if,
                                client_mac, session_id, count=1):
        packets = []
        for i in range(count):
            # create packet info stored in the test case instance
            info = self.create_packet_info(src_if, dst_if)
            # convert the info into packet payload
            payload = self.info_to_payload(info)
            # create the packet itself
            p = (Ether(dst=src_if.local_mac, src=client_mac) /
                 PPPoE(sessionid=session_id) /
                 PPP(proto=0xc021) /
                 Raw(payload))
            # store a copy of the packet in the packet info
            info.data = p.copy()
            # append the packet to the list
            packets.append(p)

        # return the created packet list
        return packets

    def create_stream_pppoe_ip4(self, src_if, dst_if,
                                client_mac, session_id, client_ip, count=1):
        packets = []
        for i in range(count):
            # create packet info stored in the test case instance
            info = self.create_packet_info(src_if, dst_if)
            # convert the info into packet payload
            payload = self.info_to_payload(info)
            # create the packet itself
            p = (Ether(dst=src_if.local_mac, src=client_mac) /
                 PPPoE(sessionid=session_id) /
                 PPP(proto=0x0021) /
                 IP(src=client_ip, dst=self.dst_ip) /
                 Raw(payload))
            # store a copy of the packet in the packet info
            info.data = p.copy()
            # append the packet to the list
            packets.append(p)

        # return the created packet list
        return packets

    def create_stream_ip4(self, src_if, dst_if, client_ip, dst_ip, count=1):
        pkts = []
        for i in range(count):
            # create packet info stored in the test case instance
            info = self.create_packet_info(src_if, dst_if)
            # convert the info into packet payload
            payload = self.info_to_payload(info)
            # create the packet itself
            p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
                 IP(src=dst_ip, dst=client_ip) /
                 Raw(payload))
            # store a copy of the packet in the packet info
            info.data = p.copy()
            # append the packet to the list
            pkts.append(p)

        # return the created packet list
        return pkts

    def verify_decapped_pppoe(self, src_if, capture, sent):
        self.assertEqual(len(capture), len(sent))

        for i in range(len(capture)):
            try:
                tx = sent[i]
                rx = capture[i]

                tx_ip = tx[IP]
                rx_ip = rx[IP]

                self.assertEqual(rx_ip.src, tx_ip.src)
                self.assertEqual(rx_ip.dst, tx_ip.dst)

            except:
                self.logger.error(ppp("Rx:", rx))
                self.logger.error(ppp("Tx:", tx))
                raise

    def verify_encaped_pppoe(self, src_if, capture, sent, session_id):

        self.assertEqual(len(capture), len(sent))

        for i in range(len(capture)):
            try:
                tx = sent[i]
                rx = capture[i]

                tx_ip = tx[IP]
                rx_ip = rx[IP]

                self.assertEqual(rx_ip.src, tx_ip.src)
                self.assertEqual(rx_ip.dst, tx_ip.dst)

                rx_pppoe = rx[PPPoE]

                self.assertEqual(rx_pppoe.sessionid, session_id)

            except:
                self.logger.error(ppp("Rx:", rx))
                self.logger.error(ppp("Tx:", tx))
                raise

    def test_PPPoE_Decap(self):
        """ PPPoE Decap Test """

        self.vapi.cli("clear trace")

        #
        # Add a route that resolves the server's destination
        #
        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
                                     [VppRoutePath(self.pg1.remote_ip4,
                                                   self.pg1.sw_if_index)])
        route_sever_dst.add_vpp_config()

        # Send PPPoE Discovery
        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
                                                 self.pg0.remote_mac)
        self.pg0.add_stream(tx0)
        self.pg_start()

        # Send PPPoE PPP LCP
        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id)
        self.pg0.add_stream(tx1)
        self.pg_start()

        # Create PPPoE session
        pppoe_if = VppPppoeInterface(self,
                                     self.pg0.remote_ip4,
                                     self.pg0.remote_mac,
                                     self.session_id)
        pppoe_if.add_vpp_config()

        #
        # Send tunneled packets that match the created tunnel and
        # are decapped and forwarded
        #
        tx2 = self.create_stream_pppoe_ip4(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id,
                                           self.pg0.remote_ip4)
        self.pg0.add_stream(tx2)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx2 = self.pg1.get_capture(len(tx2))
        self.verify_decapped_pppoe(self.pg0, rx2, tx2)

        self.logger.info(self.vapi.cli("show pppoe fib"))
        self.logger.info(self.vapi.cli("show pppoe session"))
        self.logger.info(self.vapi.cli("show ip fib"))

        #
        # test case cleanup
        #

        # Delete PPPoE session
        pppoe_if.remove_vpp_config()

        # Delete a route that resolves the server's destination
        route_sever_dst.remove_vpp_config()

    def test_PPPoE_Encap(self):
        """ PPPoE Encap Test """

        self.vapi.cli("clear trace")

        #
        # Add a route that resolves the server's destination
        #
        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
                                     [VppRoutePath(self.pg1.remote_ip4,
                                                   self.pg1.sw_if_index)])
        route_sever_dst.add_vpp_config()

        # Send PPPoE Discovery
        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
                                                 self.pg0.remote_mac)
        self.pg0.add_stream(tx0)
        self.pg_start()

        # Send PPPoE PPP LCP
        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id)
        self.pg0.add_stream(tx1)
        self.pg_start()

        # Create PPPoE session
        pppoe_if = VppPppoeInterface(self,
                                     self.pg0.remote_ip4,
                                     self.pg0.remote_mac,
                                     self.session_id)
        pppoe_if.add_vpp_config()

        #
        # Send a packet stream that is routed into the session
        #  - packets are PPPoE encapped
        #
        self.vapi.cli("clear trace")
        tx2 = self.create_stream_ip4(self.pg1, self.pg0,
                                     self.pg0.remote_ip4, self.dst_ip, 65)
        self.pg1.add_stream(tx2)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx2 = self.pg0.get_capture(len(tx2))
        self.verify_encaped_pppoe(self.pg1, rx2, tx2, self.session_id)

        self.logger.info(self.vapi.cli("show pppoe fib"))
        self.logger.info(self.vapi.cli("show pppoe session"))
        self.logger.info(self.vapi.cli("show ip fib"))
        self.logger.info(self.vapi.cli("show adj"))

        #
        # test case cleanup
        #

        # Delete PPPoE session
        pppoe_if.remove_vpp_config()

        # Delete a route that resolves the server's destination
        route_sever_dst.remove_vpp_config()

    def test_PPPoE_Add_Twice(self):
        """ PPPoE Add Same Session Twice Test """

        self.vapi.cli("clear trace")

        #
        # Add a route that resolves the server's destination
        #
        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
                                     [VppRoutePath(self.pg1.remote_ip4,
                                                   self.pg1.sw_if_index)])
        route_sever_dst.add_vpp_config()

        # Send PPPoE Discovery
        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
                                                 self.pg0.remote_mac)
        self.pg0.add_stream(tx0)
        self.pg_start()

        # Send PPPoE PPP LCP
        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id)
        self.pg0.add_stream(tx1)
        self.pg_start()

        # Create PPPoE session
        pppoe_if = VppPppoeInterface(self,
                                     self.pg0.remote_ip4,
                                     self.pg0.remote_mac,
                                     self.session_id)
        pppoe_if.add_vpp_config()

        #
        # The double create (create the same session twice) should fail,
        # and we should still be able to use the original
        #
        try:
            gre_if.add_vpp_config()
        except Exception:
            pass
        else:
            self.fail("Double GRE tunnel add does not fail")

        #
        # test case cleanup
        #

        # Delete PPPoE session
        pppoe_if.remove_vpp_config()

        # Delete a route that resolves the server's destination
        route_sever_dst.remove_vpp_config()

    def test_PPPoE_Del_Twice(self):
        """ PPPoE Delete Same Session Twice Test """

        self.vapi.cli("clear trace")

        #
        # Add a route that resolves the server's destination
        #
        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
                                     [VppRoutePath(self.pg1.remote_ip4,
                                                   self.pg1.sw_if_index)])
        route_sever_dst.add_vpp_config()

        # Send PPPoE Discovery
        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
                                                 self.pg0.remote_mac)
        self.pg0.add_stream(tx0)
        self.pg_start()

        # Send PPPoE PPP LCP
        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id)
        self.pg0.add_stream(tx1)
        self.pg_start()

        # Create PPPoE session
        pppoe_if = VppPppoeInterface(self,
                                     self.pg0.remote_ip4,
                                     self.pg0.remote_mac,
                                     self.session_id)
        pppoe_if.add_vpp_config()

        # Delete PPPoE session
        pppoe_if.remove_vpp_config()

        #
        # The double del (del the same session twice) should fail,
        # and we should still be able to use the original
        #
        try:
            gre_if.remove_vpp_config()
        except Exception:
            pass
        else:
            self.fail("Double GRE tunnel del does not fail")

        #
        # test case cleanup
        #

        # Delete a route that resolves the server's destination
        route_sever_dst.remove_vpp_config()

    def test_PPPoE_Decap_Multiple(self):
        """ PPPoE Decap Multiple Sessions Test """

        self.vapi.cli("clear trace")

        #
        # Add a route that resolves the server's destination
        #
        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
                                     [VppRoutePath(self.pg1.remote_ip4,
                                                   self.pg1.sw_if_index)])
        route_sever_dst.add_vpp_config()

        # Send PPPoE Discovery 1
        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
                                                 self.pg0.remote_mac)
        self.pg0.add_stream(tx0)
        self.pg_start()

        # Send PPPoE PPP LCP 1
        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id)
        self.pg0.add_stream(tx1)
        self.pg_start()

        # Create PPPoE session 1
        pppoe_if1 = VppPppoeInterface(self,
                                      self.pg0.remote_ip4,
                                      self.pg0.remote_mac,
                                      self.session_id)
        pppoe_if1.add_vpp_config()

        # Send PPPoE Discovery 2
        tx3 = self.create_stream_pppoe_discovery(self.pg2, self.pg1,
                                                 self.pg2.remote_mac)
        self.pg2.add_stream(tx3)
        self.pg_start()

        # Send PPPoE PPP LCP 2
        tx4 = self.create_stream_pppoe_lcp(self.pg2, self.pg1,
                                           self.pg2.remote_mac,
                                           self.session_id + 1)
        self.pg2.add_stream(tx4)
        self.pg_start()

        # Create PPPoE session 2
        pppoe_if2 = VppPppoeInterface(self,
                                      self.pg2.remote_ip4,
                                      self.pg2.remote_mac,
                                      self.session_id + 1)
        pppoe_if2.add_vpp_config()

        #
        # Send tunneled packets that match the created tunnel and
        # are decapped and forwarded
        #
        tx2 = self.create_stream_pppoe_ip4(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id,
                                           self.pg0.remote_ip4)
        self.pg0.add_stream(tx2)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx2 = self.pg1.get_capture(len(tx2))
        self.verify_decapped_pppoe(self.pg0, rx2, tx2)

        tx5 = self.create_stream_pppoe_ip4(self.pg2, self.pg1,
                                           self.pg2.remote_mac,
                                           self.session_id + 1,
                                           self.pg2.remote_ip4)
        self.pg2.add_stream(tx5)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx5 = self.pg1.get_capture(len(tx5))
        self.verify_decapped_pppoe(self.pg2, rx5, tx5)

        self.logger.info(self.vapi.cli("show pppoe fib"))
        self.logger.info(self.vapi.cli("show pppoe session"))
        self.logger.info(self.vapi.cli("show ip fib"))

        #
        # test case cleanup
        #

        # Delete PPPoE session
        pppoe_if1.remove_vpp_config()
        pppoe_if2.remove_vpp_config()

        # Delete a route that resolves the server's destination
        route_sever_dst.remove_vpp_config()

    def test_PPPoE_Encap_Multiple(self):
        """ PPPoE Encap Multiple Sessions Test """

        self.vapi.cli("clear trace")

        #
        # Add a route that resolves the server's destination
        #
        route_sever_dst = VppIpRoute(self, "100.1.1.100", 32,
                                     [VppRoutePath(self.pg1.remote_ip4,
                                                   self.pg1.sw_if_index)])
        route_sever_dst.add_vpp_config()

        # Send PPPoE Discovery 1
        tx0 = self.create_stream_pppoe_discovery(self.pg0, self.pg1,
                                                 self.pg0.remote_mac)
        self.pg0.add_stream(tx0)
        self.pg_start()

        # Send PPPoE PPP LCP 1
        tx1 = self.create_stream_pppoe_lcp(self.pg0, self.pg1,
                                           self.pg0.remote_mac,
                                           self.session_id)
        self.pg0.add_stream(tx1)
        self.pg_start()

        # Create PPPoE session 1
        pppoe_if1 = VppPppoeInterface(self,
                                      self.pg0.remote_ip4,
                                      self.pg0.remote_mac,
                                      self.session_id)
        pppoe_if1.add_vpp_config()

        # Send PPPoE Discovery 2
        tx3 = self.create_stream_pppoe_discovery(self.pg2, self.pg1,
                                                 self.pg2.remote_mac)
        self.pg2.add_stream(tx3)
        self.pg_start()

        # Send PPPoE PPP LCP 2
        tx4 = self.create_stream_pppoe_lcp(self.pg2, self.pg1,
                                           self.pg2.remote_mac,
                                           self.session_id + 1)
        self.pg2.add_stream(tx4)
        self.pg_start()

        # Create PPPoE session 2
        pppoe_if2 = VppPppoeInterface(self,
                                      self.pg2.remote_ip4,
                                      self.pg2.remote_mac,
                                      self.session_id + 1)
        pppoe_if2.add_vpp_config()

        #
        # Send a packet stream that is routed into the session
        #  - packets are PPPoE encapped
        #
        self.vapi.cli("clear trace")
        tx2 = self.create_stream_ip4(self.pg1, self.pg0,
                                     self.pg0.remote_ip4, self.dst_ip)
        self.pg1.add_stream(tx2)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx2 = self.pg0.get_capture(len(tx2))
        self.verify_encaped_pppoe(self.pg1, rx2, tx2, self.session_id)

        tx5 = self.create_stream_ip4(self.pg1, self.pg2,
                                     self.pg2.remote_ip4, self.dst_ip)
        self.pg1.add_stream(tx5)

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        rx5 = self.pg2.get_capture(len(tx5))
        self.verify_encaped_pppoe(self.pg1, rx5, tx5, self.session_id + 1)

        self.logger.info(self.vapi.cli("show pppoe fib"))
        self.logger.info(self.vapi.cli("show pppoe session"))
        self.logger.info(self.vapi.cli("show ip fib"))

        #
        # test case cleanup
        #

        # Delete PPPoE session
        pppoe_if1.remove_vpp_config()
        pppoe_if2.remove_vpp_config()

        # Delete a route that resolves the server's destination
        route_sever_dst.remove_vpp_config()

if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)