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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 __VOM_BOND_INTERFACE_H__
#define __VOM_BOND_INTERFACE_H__

#include "vom/interface.hpp"

namespace VOM {
/**
 * A bond-interface. e.g. a bond interface
 */
class bond_interface : public interface
{
public:
  /**
   * A bond interface mode
   */
  struct mode_t : enum_base<mode_t>
  {
    /**
     * Round-Robin bond interface mode
     */
    const static mode_t ROUND_ROBIN;
    /**
     * Active-backup bond interface mode
     */
    const static mode_t ACTIVE_BACKUP;
    /**
     * XOR bond interface mode
     */
    const static mode_t XOR;
    /**
     * Broadcast bond interface mode
     */
    const static mode_t BROADCAST;
    /**
     * LACP bond interface mode
     */
    const static mode_t LACP;
    /**
     * Unspecificed bond interface mode
     */
    const static mode_t UNSPECIFIED;

    /**
     * Convert VPP's value of the bond to a mode
     */
    static const mode_t from_numeric_val(uint8_t v);

  private:
    /**
     * Private constructor taking the value and the string name
     */
    mode_t(int v, const std::string& s);
  };

  /**
    * A bond interface load balance
    */
  struct lb_t : enum_base<lb_t>
  {
    /**
     * L2 bond interface lb
     */
    const static lb_t L2;
    /**
     * L34 bond interface lb
     */
    const static lb_t L34;
    /**
     * L23 bond interface lb
     */
    const static lb_t L23;
    /**
     * Unspecificed bond interface lb
     */
    const static lb_t UNSPECIFIED;

    /**
     * Convert VPP's value of the bond to a lb
     */
    static const lb_t from_numeric_val(uint8_t v);

  private:
    /**
     * Private constructor taking the value and the string name
     */
    lb_t(int v, const std::string& s);
  };

  bond_interface(const std::string& name,
                 admin_state_t state,
                 mode_t mode,
                 lb_t lb = lb_t::UNSPECIFIED);

  bond_interface(const std::string& name,
                 admin_state_t state,
                 const l2_address_t& l2_address,
                 mode_t mode,
                 lb_t lb = lb_t::UNSPECIFIED);

  ~bond_interface();
  bond_interface(const bond_interface& o);

  /**
   * The the singular instance of the bond interface in the DB by handle
   */
  static std::shared_ptr<bond_interface> find(const handle_t& hdl);

  /**
   * Return the matching 'singular instance' of the BOND interface
   */
  std::shared_ptr<bond_interface> singular() const;

  /**
   * set the mode
   */
  void set(mode_t mode);

  /**
   * set the lb
   */
  void set(lb_t lb);

  /**
   * convert to string
   */
  virtual std::string to_string() const;

protected:
  /**
   * set the handle
   */
  void set(handle_t& handle);
  friend class interface_factory;

private:
  /**
   * l2 address on bond interface
   */
  l2_address_t m_l2_address;

  /**
   *  mode on bond interface
   */
  mode_t m_mode;

  /**
   * lb mode on bond interface
   */
  lb_t m_lb;

  /**
   * Return the matching 'instance' of the sub-interface
   *  over-ride from the base class
   */
  std::shared_ptr<interface> singular_i() const;

  /**
   * Virtual functions to construct an interface create commands.
   */
  virtual std::queue<cmd*>& mk_create_cmd(std::queue<cmd*>& cmds);

  /**
   * Virtual functions to construct an interface delete commands.
   */
  virtual std::queue<cmd*>& mk_delete_cmd(std::queue<cmd*>& cmds);

  /*
   * It's the OM class that call singular()
   */
  friend class OM;
};
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "mozilla")
 * End:
 */

#endif
for j in range(cls.pg_ifs_per_vrf) if (multiplicand * cls.pg_ifs_per_vrf + j) != i] cls.flows[cls.pg_interfaces[i]] = pg_list # Packet sizes - jumbo packet (9018 bytes) skipped cls.pg_if_packet_sizes = [64, 512, 1518] # Set up all interfaces for pg_if in cls.pg_interfaces: pg_if.admin_up() pg_if.generate_remote_hosts(cls.hosts_per_pg) # Create list of VRFs cls.vrf_list = list() # Create list of deleted VRFs cls.vrf_deleted_list = list() # Create list of pg_interfaces in VRFs cls.pg_in_vrf = list() # Create list of pg_interfaces not in BDs cls.pg_not_in_vrf = [pg_if for pg_if in cls.pg_interfaces] # Create mapping of pg_interfaces to VRF IDs cls.pg_if_by_vrf_id = dict() for i in range(cls.nr_of_vrfs): vrf_id = i + 1 pg_list = [ cls.pg_interfaces[i * cls.pg_ifs_per_vrf + j] for j in range(cls.pg_ifs_per_vrf)] cls.pg_if_by_vrf_id[vrf_id] = pg_list except Exception: super(TestIp4VrfMultiInst, cls).tearDownClass() raise def setUp(self): """ Clear trace and packet infos before running each test. """ super(TestIp4VrfMultiInst, self).setUp() self.reset_packet_infos() def tearDown(self): """ Show various debug prints after each test. """ super(TestIp4VrfMultiInst, self).tearDown() if not self.vpp_dead: self.logger.info(self.vapi.ppcli("show ip fib")) self.logger.info(self.vapi.ppcli("show ip arp")) def create_vrf_and_assign_interfaces(self, count, start=1): """ Create required number of FIB tables / VRFs, put 3 l2-pg interfaces to every FIB table / VRF. :param int count: Number of FIB tables / VRFs to be created. :param int start: Starting number of the FIB table / VRF ID. \ (Default value = 1) """ for i in range(count): vrf_id = i + start pg_if = self.pg_if_by_vrf_id[vrf_id][0] dest_addr = pg_if.remote_hosts[0].ip4n dest_addr_len = 24 self.vapi.ip_add_del_route( dest_addr, dest_addr_len, pg_if.local_ip4n, table_id=vrf_id, create_vrf_if_needed=1, is_multipath=1) self.logger.info("IPv4 VRF ID %d created" % vrf_id) if vrf_id not in self.vrf_list: self.vrf_list.append(vrf_id) if vrf_id in self.vrf_deleted_list: self.vrf_deleted_list.remove(vrf_id) for j in range(self.pg_ifs_per_vrf): pg_if = self.pg_if_by_vrf_id[vrf_id][j] pg_if.set_table_ip4(vrf_id) self.logger.info("pg-interface %s added to IPv4 VRF ID %d" % (pg_if.name, vrf_id)) if pg_if not in self.pg_in_vrf: self.pg_in_vrf.append(pg_if) if pg_if in self.pg_not_in_vrf: self.pg_not_in_vrf.remove(pg_if) pg_if.config_ip4() pg_if.configure_ipv4_neighbors(vrf_id) self.logger.debug(self.vapi.ppcli("show ip fib")) self.logger.debug(self.vapi.ppcli("show ip arp")) def delete_vrf(self, vrf_id): """ Delete required FIB table / VRF. :param int vrf_id: The FIB table / VRF ID to be deleted. """ # self.vapi.reset_vrf(vrf_id, is_ipv6=0) self.vapi.reset_fib(vrf_id, is_ipv6=0) if vrf_id in self.vrf_list: self.vrf_list.remove(vrf_id) if vrf_id not in self.vrf_deleted_list: self.vrf_deleted_list.append(vrf_id) for j in range(self.pg_ifs_per_vrf): pg_if = self.pg_if_by_vrf_id[vrf_id][j] if pg_if in self.pg_in_vrf: self.pg_in_vrf.remove(pg_if) if pg_if not in self.pg_not_in_vrf: self.pg_not_in_vrf.append(pg_if) self.logger.info("IPv4 VRF ID %d reset" % vrf_id) self.logger.debug(self.vapi.ppcli("show ip fib")) self.logger.debug(self.vapi.ppcli("show ip arp")) def create_stream(self, src_if, packet_sizes): """ Create input packet stream for defined interface using hosts list. :param object src_if: Interface to create packet stream for. :param list packet_sizes: List of required packet sizes. :return: Stream of packets. """ pkts = [] src_hosts = src_if.remote_hosts for dst_if in self.flows[src_if]: for dst_host in dst_if.remote_hosts: src_host = random.choice(src_hosts) pkt_info = self.create_packet_info(src_if, dst_if) payload = self.info_to_payload(pkt_info) p = (Ether(dst=src_if.local_mac, src=src_host.mac) / IP(src=src_host.ip4, dst=dst_host.ip4) / UDP(sport=1234, dport=1234) / Raw(payload)) pkt_info.data = p.copy() size = random.choice(packet_sizes) self.extend_packet(p, size) pkts.append(p) self.logger.debug("Input stream created for port %s. Length: %u pkt(s)" % (src_if.name, len(pkts))) return pkts def verify_capture(self, pg_if, capture): """ Verify captured input packet stream for defined interface. :param object pg_if: Interface to verify captured packet stream for. :param list capture: Captured packet stream. """ last_info = dict() for i in self.pg_interfaces: last_info[i.sw_if_index] = None dst_sw_if_index = pg_if.sw_if_index for packet in capture: try: ip = packet[IP] udp = packet[UDP] payload_info = self.payload_to_info(str(packet[Raw])) packet_index = payload_info.index self.assertEqual(payload_info.dst, dst_sw_if_index) self.logger.debug("Got packet on port %s: src=%u (id=%u)" % (pg_if.name, payload_info.src, packet_index)) next_info = self.get_next_packet_info_for_interface2( payload_info.src, dst_sw_if_index, last_info[payload_info.src]) last_info[payload_info.src] = next_info self.assertIsNotNone(next_info) self.assertEqual(packet_index, next_info.index) saved_packet = next_info.data # Check standard fields self.assertEqual(ip.src, saved_packet[IP].src) self.assertEqual(ip.dst, saved_packet[IP].dst) self.assertEqual(udp.sport, saved_packet[UDP].sport) self.assertEqual(udp.dport, saved_packet[UDP].dport) except: self.logger.error(ppp("Unexpected or invalid packet:", packet)) raise for i in self.pg_interfaces: remaining_packet = self.get_next_packet_info_for_interface2( i, dst_sw_if_index, last_info[i.sw_if_index]) self.assertIsNone( remaining_packet, "Port %u: Packet expected from source %u didn't arrive" % (dst_sw_if_index, i.sw_if_index)) def verify_vrf(self, vrf_id): """ Check if the FIB table / VRF ID is configured. :param int vrf_id: The FIB table / VRF ID to be verified. :return: 1 if the FIB table / VRF ID is configured, otherwise return 0. """ ip_fib_dump = self.vapi.ip_fib_dump() vrf_count = 0 for ip_fib_details in ip_fib_dump: if ip_fib_details[2] == vrf_id: vrf_count += 1 if vrf_count == 0: self.logger.info("IPv4 VRF ID %d is not configured" % vrf_id) return 0 else: self.logger.info("IPv4 VRF ID %d is configured" % vrf_id) return 1 def run_verify_test(self): """ Create packet streams for all configured l2-pg interfaces, send all \ prepared packet streams and verify that: - all packets received correctly on all pg-l2 interfaces assigned to bridge domains - no packet received on all pg-l2 interfaces not assigned to bridge domains :raise RuntimeError: If no packet captured on l2-pg interface assigned to the bridge domain or if any packet is captured on l2-pg interface not assigned to the bridge domain. """ # Test # Create incoming packet streams for packet-generator interfaces for pg_if in self.pg_interfaces: pkts = self.create_stream(pg_if, self.pg_if_packet_sizes) pg_if.add_stream(pkts) # Enable packet capture and start packet sending self.pg_enable_capture(self.pg_interfaces) self.pg_start() # Verify # Verify outgoing packet streams per packet-generator interface for pg_if in self.pg_interfaces: if pg_if in self.pg_in_vrf: capture = pg_if.get_capture(remark="interface is in VRF") self.verify_capture(pg_if, capture) elif pg_if in self.pg_not_in_vrf: pg_if.assert_nothing_captured(remark="interface is not in VRF", filter_out_fn=is_ipv4_misc) self.logger.debug("No capture for interface %s" % pg_if.name) else: raise Exception("Unknown interface: %s" % pg_if.name) def test_ip4_vrf_01(self): """ IP4 VRF Multi-instance test 1 - create 5 BDs """ # Config 1 # Create 4 VRFs self.create_vrf_and_assign_interfaces(4) # Verify 1 for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), 1) # Test 1 self.run_verify_test() def test_ip4_vrf_02(self): """ IP4 VRF Multi-instance test 2 - delete 2 VRFs """ # Config 2 # Delete 2 VRFs self.delete_vrf(1) self.delete_vrf(2) # Verify 2 # for vrf_id in self.vrf_deleted_list: # self.assertEqual(self.verify_vrf(vrf_id), 0) for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), 1) # Test 2 self.run_verify_test() def test_ip4_vrf_03(self): """ IP4 VRF Multi-instance 3 - add 2 VRFs """ # Config 3 # Add 1 of deleted VRFs and 1 new VRF self.create_vrf_and_assign_interfaces(1) self.create_vrf_and_assign_interfaces(1, start=5) # Verify 3 # for vrf_id in self.vrf_deleted_list: # self.assertEqual(self.verify_vrf(vrf_id), 0) for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), 1) # Test 3 self.run_verify_test() def test_ip4_vrf_04(self): """ IP4 VRF Multi-instance test 4 - delete 4 VRFs """ # Config 4 # Delete all VRFs (i.e. no VRF except VRF=0 created) for i in range(len(self.vrf_list)): self.delete_vrf(self.vrf_list[0]) # Verify 4 # for vrf_id in self.vrf_deleted_list: # self.assertEqual(self.verify_vrf(vrf_id), 0) for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), 1) # Test 4 self.run_verify_test() if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)