#!/usr/bin/env python
"""IRB Test Case HLD:

**config**
    - L2 MAC learning enabled in l2bd
    - 2 routed interfaces untagged, bvi (Bridge Virtual Interface)
    - 2 bridged interfaces in l2bd with bvi

**test**
    - sending ip4 eth pkts between routed interfaces
        - 2 routed interfaces
        - 2 bridged interfaces

    - 64B, 512B, 1518B, 9200B (ether_size)

    - burst of pkts per interface
        - 257pkts per burst
        - routed pkts hitting different FIB entries
        - bridged pkts hitting different MAC entries

**verify**
    - all packets received correctly

"""

import unittest
from random import choice

from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP

from framework import VppTestCase, VppTestRunner


class TestIpIrb(VppTestCase):
    """IRB Test Case"""

    @classmethod
    def setUpClass(cls):
        """
        #. Create BD with MAC learning enabled and put interfaces to this BD.
        #. Configure IPv4 addresses on loopback interface and routed interface.
        #. Configure MAC address binding to IPv4 neighbors on loop0.
        #. Configure MAC address on pg2.
        #. Loopback BVI interface has remote hosts, one half of hosts are
           behind pg0 second behind pg1.
        """
        super(TestIpIrb, cls).setUpClass()

        cls.pg_if_packet_sizes = [64, 512, 1518, 9018]  # packet sizes
        cls.bd_id = 10
        cls.remote_hosts_count = 250

        # create 3 pg interfaces, 1 loopback interface
        cls.create_pg_interfaces(range(3))
        cls.create_loopback_interfaces(1)

        cls.interfaces = list(cls.pg_interfaces)
        cls.interfaces.extend(cls.lo_interfaces)

        for i in cls.interfaces:
            i.admin_up()

        # Create BD with MAC learning enabled and put interfaces to this BD
        cls.vapi.sw_interface_set_l2_bridge(
            cls.loop0.sw_if_index, bd_id=cls.bd_id, bvi=1)
        cls.vapi.sw_interface_set_l2_bridge(
            cls.pg0.sw_if_index, bd_id=cls.bd_id)
        cls.vapi.sw_interface_set_l2_bridge(
            cls.pg1.sw_if_index, bd_id=cls.bd_id)

        # Configure IPv4 addresses on loopback interface and routed interface
        cls.loop0.config_ip4()
        cls.pg2.config_ip4()

        # Configure MAC address binding to IPv4 neighbors on loop0
        cls.loop0.generate_remote_hosts(cls.remote_hosts_count)
        cls.loop0.configure_ipv4_neighbors()
        # configure MAC address on pg2
        cls.pg2.resolve_arp()

        # Loopback BVI interface has remote hosts, one half of hosts are behind
        # pg0 second behind pg1
        half = cls.remote_hosts_count // 2
        cls.pg0.remote_hosts = cls.loop0.remote_hosts[:half]
        cls.pg1.remote_hosts = cls.loop0.remote_hosts[half:]

    def tearDown(self):
        """Run standard test teardown and log ``show l2patch``,
        ``show l2fib verbose``,``show bridge-domain <bd_id> detail``,
        ``show ip arp``.
        """
        super(TestIpIrb, self).tearDown()
        if not self.vpp_dead:
            self.logger.info(self.vapi.cli("show l2patch"))
            self.logger.info(self.vapi.cli("show l2fib verbose"))
            self.logger.info(self.vapi.cli("show bridge-domain %s detail" %
                                           self.bd_id))
            self.logger.info(self.vapi.cli("show ip arp"))

    def create_stream(self, src_ip_if, dst_ip_if, packet_sizes):
        pkts = []
        for i in range(0, 257):
            remote_dst_host = choice(dst_ip_if.remote_hosts)
            info = self.create_packet_info(src_ip_if, dst_ip_if)
            payload = self.info_to_payload(info)
            p = (Ether(dst=src_ip_if.local_mac, src=src_ip_if.remote_mac) /
                 IP(src=src_ip_if.remote_ip4,
                    dst=remote_dst_host.ip4) /
                 UDP(sport=1234, dport=1234) /
                 Raw(payload))
            info.data = p.copy()
            size = packet_sizes[(i // 2) % len(packet_sizes)]
            self.extend_packet(p, size)
            pkts.append(p)
        return pkts

    def create_stream_l2_to_ip(self, src_l2_if, src_ip_if, dst_ip_if,
                               packet_sizes):
        pkts = []
        for i in range(0, 257):
            info = self.create_packet_info(src_ip_if, dst_ip_if)
            payload = self.info_to_payload(info)

            host = choice(src_l2_if.remote_hosts)

            p = (Ether(src=host.mac,
                       dst=src_ip_if.local_mac) /
                 IP(src=host.ip4,
                    dst=dst_ip_if.remote_ip4) /
                 UDP(sport=1234, dport=1234) /
                 Raw(payload))

            info.data = p.copy()
            size = packet_sizes[(i // 2) % len(packet_sizes)]
            self.extend_packet(p, size)

            pkts.append(p)
        return pkts

    def verify_capture_l2_to_ip(self, dst_ip_if, src_ip_if, capture):
        last_info = dict()
        for i in self.interfaces:
            last_info[i.sw_if_index] = None

        dst_ip_sw_if_index = dst_ip_if.sw_if_index

        for packet in capture:
            ip = packet[IP]
            udp = packet[IP][UDP]
            payload_info = self.payload_to_info(str(packet[IP][UDP][Raw]))

            self.assertEqual(payload_info.dst, dst_ip_sw_if_index)

            next_info = self.get_next_packet_info_for_interface2(
                payload_info.src, dst_ip_sw_if_index,
                
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/*
 * Copyright (c) 2015 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.
 */
/*
 * interface_cli.c: interface CLI
 *
 * Copyright (c) 2008 Eliot Dresselhaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/**
 * @file
 * Interface CLI.
 */

#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vppinfra/bitmap.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/fib/ip6_fib.h>

static int
compare_interface_names (void *a1, void *a2)
{
  u32 *hi1 = a1;
  u32 *hi2 = a2;

  return vnet_hw_interface_compare (vnet_get_main (), *hi1, *hi2);
}

static clib_error_t *
show_or_clear_hw_interfaces (vlib_main_t * vm,
			     unformat_input_t * input,
			     vlib_cli_command_t * cmd)
{
  clib_error_t *error = 0;
  vnet_main_t *vnm = vnet_get_main ();
  vnet_interface_main_t *im = &vnm->interface_main;
  vnet_hw_interface_t *hi;
  u32 hw_if_index, *hw_if_indices = 0;
  int i, verbose = -1, is_show, show_bond = 0;

  is_show = strstr (cmd->path, "show") != 0;
  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      /* See if user wants to show a specific interface. */
      if (unformat
	  (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
	vec_add1 (hw_if_indices, hw_if_index);

      /* See if user wants to show an interface with a specific hw_if_index. */
      else if (unformat (input, "%u", &hw_if_index))
	vec_add1 (hw_if_indices, hw_if_index);

      else if (unformat (input, "verbose"))
	verbose = 1;		/* this is also the default */

      else if (unformat (input, "detail"))
	verbose = 2;

      else if (unformat (input, "brief"))
	verbose = 0;

      else if (unformat (input, "bond"))
	{
	  show_bond = 1;
	  if (verbose < 0)
	    verbose = 0;	/* default to brief for link bonding */
	}

      else
	{
	  error = clib_error_return (0, "unknown input `%U'",
				     format_unformat_error, input);
	  goto done;
	}
    }

  /* Gather interfaces. */
  if (vec_len (hw_if_indices) == 0)
    pool_foreach (hi, im->hw_interfaces,
		  vec_add1 (hw_if_indices, hi - im->hw_interfaces));

  if (verbose < 0)
    verbose = 1;		/* default to verbose (except bond) */

  if (is_show)
    {
      /* Sort by name. */
      vec_sort_with_function (hw_if_indices, compare_interface_names);

      vlib_cli_output (vm, "%U\n", format_vnet_hw_interface, vnm, 0, verbose);
      for (i = 0; i < vec_len (hw_if_indices); i++)
	{
	  hi = vnet_get_hw_interface (vnm, hw_if_indices[i]);
	  if (show_bond == 0)	/* show all interfaces */
	    vlib_cli_output (vm, "%U\n", format_vnet_hw_interface, vnm,
			     hi, verbose);
	  else if ((hi->bond_info) &&
		   (hi->bond_info != VNET_HW_INTERFACE_BOND_INFO_SLAVE))
	    {			/* show only bonded interface and all its slave interfaces */
	      int hw_idx;
	      vnet_hw_interface_t *shi;
	      vlib_cli_output (vm, "%U\n", format_vnet_hw_interface, vnm,
			       hi, verbose);

              /* *INDENT-OFF* */
	      clib_bitmap_foreach (hw_idx, hi->bond_info,
              ({
                shi = vnet_get_hw_interface(vnm, hw_idx);
                vlib_cli_output (vm, "%U\n",
                                 format_vnet_hw_interface, vnm, shi, verbose);
              }));
              /* *INDENT-ON* */
	    }
	}
    }
  else
    {
      for (i = 0; i < vec_len (hw_if_indices); i++)
	{
	  vnet_device_class_t *dc;

	  hi = vnet_get_hw_interface (vnm, hw_if_indices[i]);
	  dc = vec_elt_at_index (im->device_classes, hi->dev_class_index);

	  if (dc->clear_counters)
	    dc->clear_counters (hi->dev_instance);
	}
    }

done:
  vec_free (hw_if_indices);
  return error;
}

/* *INDENT-OFF* */
/*?
 * Displays various information about the state of the current terminal
 * session.
 *
 * @cliexpar
 * @cliexstart{show hardware}
 * Name                Link  Hardware
 * GigabitEthernet2/0/0               up   GigabitEthernet2/0/0
 * Ethernet address 00:50:56:b7:7c:83
 * Intel 82545em_copper
 *   link up, media 1000T full-duplex, master,
 *   0 unprocessed, 384 total buffers on rx queue 0 ring
 *   237 buffers in driver rx cache
 *   rx total packets                                    1816
 *   rx total bytes                                    181084
 *   rx good packets                                     1816
 *   rx good bytes                                     181084
 *   rx 65 127 byte packets                              1586
 *   rx 256 511 byte packets                              230
 *   tx total packets                                     346
 *   tx total bytes                                     90224
 *   tx good packets                                      346
 *   tx good bytes                                      88840
 *   tx 64 byte packets                                     1
 *   tx 65 127 byte packets                               115
 *   tx 256 511 byte packets                              230
 * @cliexend
 ?*/
VLIB_CLI_COMMAND (show_hw_interfaces_command, static) = {
  .path = "show hardware-interfaces",
  .short_help = "show hardware-interfaces [brief|verbose|detail] [bond] [<if-name1> <if-name2> ...]",
  .function = show_or_clear_hw_interfaces,
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (clear_hw_interface_counters_command, static) = {
  .path = "clear hardware-interfaces",
  .short_help = "Clear hardware interfaces statistics",
  .function = show_or_clear_hw_interfaces,
};
/* *INDENT-ON* */

static int
sw_interface_name_compare (void *a1, void *a2)
{
  vnet_sw_interface_t *si1 = a1;
  vnet_sw_interface_t *si2 = a2;

  return vnet_sw_interface_compare (vnet_get_main (),
				    si1->sw_if_index, si2->sw_if_index);
}

static clib_error_t *
show_sw_interfaces (vlib_main_t * vm,
		    unformat_input_t * input, vlib_cli_command_t * cmd)
{
  clib_error_t *error = 0;
  vnet_main_t *vnm = vnet_get_main ();
  vnet_interface_main_t *im = &vnm->interface_main;
  vnet_sw_interface_t *si, *sorted_sis = 0;
  u32 sw_if_index = ~(u32) 0;
  u8 show_addresses = 0;
  u8 show_features = 0;
  u8 show_tag = 0;

  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      /* See if user wants to show specific interface */
      if (unformat
	  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
	{
	  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
	  vec_add1 (sorted_sis, si[0]);
	}
      else if (unformat (input, "address") || unformat (input, "addr"))
	show_addresses = 1;
      else if (unformat (input, "features") || unformat (input, "feat"))
	show_features = 1;
      else if (unformat (input, "tag"))
	show_tag = 1;
      else
	{
	  error = clib_error_return (0, "unknown input `%U'",
				     format_unformat_error, input);
	  goto done;
	}
    }

  if (show_features || show_tag)
    {
      if (sw_if_index == ~(u32) 0)
	return clib_error_return (0, "Interface not specified...");
    }

  if (show_features)
    {
      vnet_interface_features_show (vm, sw_if_index);
      return 0;
    }
  if (show_tag)
    {
      u8 *tag;
      tag = vnet_get_sw_interface_tag (vnm, sw_if_index);
      vlib_cli_output (vm, "%U: %s",
		       format_vnet_sw_if_index_name, vnm, sw_if_index,
		       tag ? (char *) tag : "(none)");
      return 0;
    }

  if (!show_addresses)
    vlib_cli_output (vm, "%U\n", format_vnet_sw_interface, vnm, 0);

  if (vec_len (sorted_sis) == 0)	/* Get all interfaces */
    {
      /* Gather interfaces. */
      sorted_sis =
	vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces));
      _vec_len (sorted_sis) = 0;
      pool_foreach (si, im->sw_interfaces, (
					     {
					     vec_add1 (sorted_sis, si[0]);
					     }
		    ));

      /* Sort by name. */
      vec_sort_with_function (sorted_sis, sw_interface_name_compare);
    }

  if (show_addresses)
    {
      vec_foreach (si, sorted_sis)
      {
	l2input_main_t *l2m = &l2input_main;
	ip4_main_t *im4 = &ip4_main;
	ip6_main_t *im6 = &ip6_main;
	ip_lookup_main_t *lm4 = &im4->lookup_main;
	ip_lookup_main_t *lm6 = &im6->lookup_main;
	ip_interface_address_t *ia = 0;
	ip4_address_t *r4;
	ip6_address_t *r6;
	u32 fib_index4 = 0, fib_index6 = 0;
	ip4_fib_t *fib4;
	ip6_fib_t *fib6;
	l2_input_config_t *config;

	if (vec_len (im4->fib_index_by_sw_if_index) > si->sw_if_index)
	  fib_index4 = vec_elt (im4->fib_index_by_sw_if_index,
				si->sw_if_index);

	if (vec_len (im6->fib_index_by_sw_if_index) > si->sw_if_index)
	  fib_index6 = vec_elt (im6->fib_index_by_sw_if_index,
				si->sw_if_index);

	fib4 = ip4_fib_get (fib_index4);
	fib6 = ip6_fib_get (fib_index6);

	if (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
	  vlib_cli_output
	    (vm, "%U (%s): \n  unnumbered, use %U",
	     format_vnet_sw_if_index_name,
	     vnm, si->sw_if_index,
	     (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? "up" : "dn",
	     format_vnet_sw_if_index_name, vnm, si->unnumbered_sw_if_index);

	else
	  {
	    vlib_cli_output (vm, "%U (%s):",
			     format_vnet_sw_if_index_name,
			     vnm, si->sw_if_index,
			     (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
			     ? "up" : "dn");
	  }

	/* Display any L2 addressing info */
	vec_validate (l2m->configs, si->sw_if_index);
	config = vec_elt_at_index (l2m->configs, si->sw_if_index);
	if (config->bridge)
	  {
	    u32 bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
	    vlib_cli_output (vm, "  l2 bridge bd_id %d%s%d", bd_id,
			     config->bvi ? " bvi shg " : " shg ",
			     config->shg);
	  }
	else if (config->xconnect)
	  {
	    vlib_cli_output (vm, "  l2 xconnect %U",
			     format_vnet_sw_if_index_name,
			     vnm, config->output_sw_if_index);
	  }

	/* Display any IP4 addressing info */
          /* *INDENT-OFF* */
	  foreach_ip_interface_address (lm4, ia, si->sw_if_index,
					1 /* honor unnumbered */,
	  ({
            r4 = ip_interface_address_get_address (lm4, ia);
            if (fib4->table_id)
              {
                vlib_cli_output (vm, "  %U/%d table %d",
                                 format_ip4_address, r4,
                                 ia->address_length,
                                 fib4->table_id);
              }
            else
              {
                vlib_cli_output (vm, "  %U/%d",
                                 format_ip4_address, r4,
                                 ia->address_length);
              }
          }));
          /* *INDENT-ON* */

	/* Display any IP6 addressing info */
          /* *INDENT-OFF* */
          foreach_ip_interface_address (lm6, ia, si->sw_if_index,
                                        1 /* honor unnumbered */,
          ({
            r6 = ip_interface_address_get_address (lm6, ia);
            if (fib6->table_id)
              {
                vlib_cli_output (vm, "  %U/%d table %d",
                                 format_ip6_address, r6,
                                 ia->address_length,
                                 fib6->table_id);
              }
            else
              {
                vlib_cli_output (vm, "  %U/%d",
                                 format_ip6_address, r6,
                                 ia->address_length);
              }
          }));
          /* *INDENT-ON* */
      }
    }
  else
    {
      vec_foreach (si, sorted_sis)
      {
	vlib_cli_output (vm, "%U\n", format_vnet_sw_interface, vnm, si);
      }
    }

done:
  vec_free (sorted_sis);
  return error;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_sw_interfaces_command, static) = {
  .path = "show interfaces",
  .short_help = "show interfaces [address|addr|features|feat] [<if-name1> <if-name2> ...]",
  .function = show_sw_interfaces,
};
/* *INDENT-ON* */

/* Root of all interface commands. */
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vnet_cli_interface_command, static) = {
  .path = "interface",
  .short_help = "Interface commands",
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vnet_cli_set_interface_command, static) = {
  .path = "set interface",
  .short_help = "Interface commands",
};
/* *INDENT-ON* */

static clib_error_t *
clear_interface_counters (vlib_main_t * vm,
			  unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  vnet_interface_main_t *im = &vnm->interface_main;
  vlib_simple_counter_main_t *sm;
  vlib_combined_counter_main_t *cm;
  static vnet_main_t **my_vnet_mains;
  int i, j, n_counters;

  vec_reset_length (my_vnet_mains);

  for (i = 0; i < vec_len (vnet_mains); i++)
    {
      if (vnet_mains[i])
	vec_add1 (my_vnet_mains, vnet_mains[i]);
    }

  if (vec_len (vnet_mains) == 0)
    vec_add1 (my_vnet_mains, vnm);

  n_counters = vec_len (im->combined_sw_if_counters);

  for (j = 0; j < n_counters; j++)
    {
      for (i = 0; i < vec_len (my_vnet_mains); i++)
	{
	  im = &my_vnet_mains[i]->interface_main;
	  cm = im->combined_sw_if_counters + j;
	  vlib_clear_combined_counters (cm);
	}
    }

  n_counters = vec_len (im->sw_if_counters);

  for (j = 0; j < n_counters; j++)
    {
      for (i = 0; i < vec_len (my_vnet_mains); i++)
	{
	  im = &my_vnet_mains[i]->interface_main;
	  sm = im->sw_if_counters + j;
	  vlib_clear_simple_counters (sm);
	}
    }

  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (clear_interface_counters_command, static) = {
  .path = "clear interfaces",
  .short_help = "Clear interfaces statistics",
  .function = clear_interface_counters,
};
/* *INDENT-ON* */

/**
 * Parse subinterface names.
 *
 * The following subinterface syntax is supported. The first two are for
 * backwards compatability:
 *
 * <intf-name> <id>
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       is a single dot1q vlan with vlan id <id> and exact-match semantics.
 *
 * <intf-name> <min_id>-<max_id>
 *     - a set of the above subinterfaces, repeating for each id
 *       in the range <min_id> to <max_id>
 *
 * In the following, exact-match semantics (i.e. the number of vlan tags on the
 * packet must match the number of tags in the configuration) are used only if
 * the keyword exact-match is present. Non-exact match is the default.
 *
 * <intf-name> <id> dot1q <outer_id> [exact-match]
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       is a single dot1q vlan with vlan id <outer_id>.
 *
 * <intf-name> <id> dot1q any [exact-match]
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       is a single dot1q vlan with any vlan id.
 *
 * <intf-name> <id> dot1q <outer_id> inner-dot1q <inner_id> [exact-match]
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       is a double dot1q vlan with outer vlan id <outer_id> and inner vlan id
 *       <inner_id>.
 *
 * <intf-name> <id> dot1q <outer_id> inner-dot1q any [exact-match]
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       is a double dot1q vlan with outer vlan id <id> and any inner vlan id.
 *
 * <intf-name> <id> dot1q any inner-dot1q any [exact-match]
 *
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       is a double dot1q vlan with any outer vlan id and any inner vlan id.
 *
 * For each of the above CLI, there is a duplicate that uses the keyword
 * "dot1ad" in place of the first "dot1q". These interfaces use ethertype
 * 0x88ad in place of 0x8100 for the outer ethertype. Note that for double-
 * tagged packets the inner ethertype is always 0x8100. Also note that
 * the dot1q and dot1ad naming spaces are independent, so it is legal to
 * have both "Gig3/0/0.1 dot1q 100" and "Gig3/0/0.2 dot1ad 100". For example:
 *
 * <intf-name> <id> dot1ad <outer_id> inner-dot1q <inner_id> [exact-match]
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       is a double dot1ad vlan with outer vlan id <outer_id> and inner vlan
 *       id <inner_id>.
 *
 * <intf-name> <id> untagged
 *     - a subinterface with the name <intf-name>.<id>. The subinterface
 *       has no vlan tags. Only one can be specified per interface.
 *
 * <intf-name> <id> default
 *     - a subinterface with the name <intf-name>.<id>. This is associated
 *       with a packet that did not match any other configured subinterface
 *       on this interface. Only one can be specified per interface.
 */

static clib_error_t *
parse_vlan_sub_interfaces (unformat_input_t * input,
			   vnet_sw_interface_t * template)
{
  clib_error_t *error = 0;
  u32 inner_vlan, outer_vlan;

  if (unformat (input, "any inner-dot1q any"))
    {
      template->sub.eth.flags.two_tags = 1;
      template->sub.eth.flags.outer_vlan_id_any = 1;
      template->sub.eth.flags.inner_vlan_id_any = 1;
    }
  else if (unformat (input, "any"))
    {
      template->sub.eth.flags.one_tag = 1;
      template->sub.eth.flags.outer_vlan_id_any = 1;
    }
  else if (unformat (input, "%d inner-dot1q any", &outer_vlan))
    {
      template->sub.eth.flags.two_tags = 1;
      template->sub.eth.flags.inner_vlan_id_any = 1;
      template->sub.eth.outer_vlan_id = outer_vlan;
    }
  else if (unformat (input, "%d inner-dot1q %d", &outer_vlan, &inner_vlan))
    {
      template->sub.eth.flags.two_tags = 1;
      template->sub.eth.outer_vlan_id = outer_vlan;
      template->sub.eth.inner_vlan_id = inner_vlan;
    }
  else if (unformat (input, "%d", &outer_vlan))
    {
      template->sub.eth.flags.one_tag = 1;
      template->sub.eth.outer_vlan_id = outer_vlan;
    }
  else
    {
      error = clib_error_return (0, "expected dot1q config, got `%U'",
				 format_unformat_error, input);
      goto done;
    }

  if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (input, "exact-match"))
	{
	  template->sub.eth.flags.exact_match = 1;
	}
    }

done:
  return error;
}

static clib_error_t *
create_sub_interfaces (vlib_main_t * vm,
		       unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  clib_error_t *error = 0;
  u32 hw_if_index, sw_if_index;
  vnet_hw_interface_t *hi;
  u32 id, id_min, id_max;
  vnet_sw_interface_t template;

  hw_if_index = ~0;
  if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
    {
      error = clib_error_return (0, "unknown interface `%U'",
				 format_unformat_error, input);
      goto done;
    }

  memset (&template, 0, sizeof (template));
  template.sub.eth.raw_flags = 0;

  if (unformat (input, "%d default", &id_min))
    {
      id_max = id_min;
      template.sub.eth.flags.default_sub = 1;
    }
  else if (unformat (input, "%d untagged", &id_min))
    {
      id_max = id_min;
      template.sub.eth.flags.no_tags = 1;
      template.sub.eth.flags.exact_match = 1;
    }
  else if (unformat (input, "%d dot1q", &id_min))
    {
      /* parse dot1q config */
      id_max = id_min;
      error = parse_vlan_sub_interfaces (input, &template);
      if (error)
	goto done;
    }
  else if (unformat (input, "%d dot1ad", &id_min))
    {
      /* parse dot1ad config */
      id_max = id_min;
      template.sub.eth.flags.dot1ad = 1;
      error = parse_vlan_sub_interfaces (input, &template);
      if (error)
	goto done;
    }
  else if (unformat (input, "%d-%d", &id_min, &id_max))
    {
      template.sub.eth.flags.one_tag = 1;
      template.sub.eth.flags.exact_match = 1;
      if (id_min > id_max)
	goto id_error;
    }
  else if (unformat (input, "%d", &id_min))
    {
      id_max = id_min;
      template.sub.eth.flags.one_tag = 1;
      template.sub.eth.outer_vlan_id = id_min;
      template.sub.eth.flags.exact_match = 1;
    }
  else
    {
    id_error:
      error = clib_error_return (0, "expected ID or ID MIN-MAX, got `%U'",
				 format_unformat_error, input);
      goto done;
    }

  hi = vnet_get_hw_interface (vnm, hw_if_index);

  if (hi->bond_info == VNET_HW_INTERFACE_BOND_INFO_SLAVE)
    {
      error =
	clib_error_return (0,
			   "not allowed as %v belong to a BondEthernet interface",
			   hi->name);
      goto done;
    }

  for (id = id_min; id <= id_max; id++)
    {
      uword *p;
      vnet_interface_main_t *im = &vnm->interface_main;
      u64 sup_and_sub_key = ((u64) (hi->sw_if_index) << 32) | (u64) id;
      u64 *kp;

      p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
      if (p)
	{
	  if (CLIB_DEBUG > 0)
	    clib_warning ("sup sw_if_index %d, sub id %d already exists\n",
			  hi->sw_if_index, id);
	  continue;
	}

      kp = clib_mem_alloc (sizeof (*kp));
      *kp = sup_and_sub_key;

      template.type = VNET_SW_INTERFACE_TYPE_SUB;
      template.flood_class = VNET_FLOOD_CLASS_NORMAL;
      template.sup_sw_if_index = hi->sw_if_index;
      template.sub.id = id;
      if (id_min < id_max)
	template.sub.eth.outer_vlan_id = id;

      error = vnet_create_sw_interface (vnm, &template, &sw_if_index);
      if (error)
	goto done;

      hash_set (hi->sub_interface_sw_if_index_by_id, id, sw_if_index);
      hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, sw_if_index);
      vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
		       vnet_get_main (), sw_if_index);
    }

done:
  return error;
}

/* *INDENT-OFF* */
/*?
 * Create vlan subinterfaces
 *
 * @cliexpar
 * @cliexstart{create sub-interfaces}
 *
 * To create a vlan subinterface 11 to process packets on 802.1q VLAN id 11, use:
 *
 *  vpp# create sub GigabitEthernet2/0/0 11
 *
 * This shorthand is equivalent to:
 *  vpp# create sub GigabitEthernet2/0/0 11 dot1q 11 exact-match
 *
 * You can specify a subinterface number that is different from the vlan id:
 *  vpp# create sub GigabitEthernet2/0/0 11 dot1q 100
 *
 * You can create qinq and q-in-any interfaces:
 *  vpp# create sub GigabitEthernet2/0/0 11 dot1q 100 inner-dot1q 200
 *  vpp# create sub GigabitEthernet2/0/0 12 dot1q 100 inner-dot1q any
 *
 * You can also create dot1ad interfaces:
 *  vpp# create sub GigabitEthernet2/0/0 11 dot1ad 11
 *  vpp# create sub GigabitEthernet2/0/0 12 dot1q 100 inner-dot1q 200
 *
 * Subinterfaces can be configured as either exact-match or non-exact match.
 * Non-exact match is the CLI default. If exact-match is specified,
 * packets must have the same number of vlan tags as the configuration.
 * For non-exact-match, packets must at least that number of tags.
 * L3 (routed) interfaces must be configured as exact-match.
 * L2 interfaces are typically configured as non-exact-match.
 *
 * For example, a packet with outer vlan 100 and inner 200 would match this interface:
 *  vpp# create sub GigabitEthernet2/0/0 5 dot1q 100
 *
 * but would not match this interface:
 *  vpp# create sub GigabitEthernet2/0/0 5 dot1q 100 exact-match
 *
 * There are two special subinterfaces that can be configured. Subinterface untagged has no vlan tags:
 *  vpp# create sub GigabitEthernet2/0/0 5 untagged
 *
 * The subinterface default matches any packet that does not match any other subinterface:
 *  vpp# create sub GigabitEthernet2/0/0 7 default
 * @cliexend
 ?*/
VLIB_CLI_COMMAND (create_sub_interfaces_command, static) = {
  .path = "create sub-interfaces",
  .short_help = "create sub-interfaces <nn>[-<nn>] [dot1q|dot1ad|default|untagged]",
  .function = create_sub_interfaces,
};
/* *INDENT-ON* */

static clib_error_t *
set_state (vlib_main_t * vm,
	   unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  clib_error_t *error;
  u32 sw_if_index, flags;

  sw_if_index = ~0;
  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
    {
      error = clib_error_return (0, "unknown interface `%U'",
				 format_unformat_error, input);
      goto done;
    }

  if (!unformat (input, "%U", unformat_vnet_sw_interface_flags, &flags))
    {
      error = clib_error_return (0, "unknown flags `%U'",
				 format_unformat_error, input);
      goto done;
    }

  error = vnet_sw_interface_set_flags (vnm, sw_if_index, flags);
  if (error)
    goto done;

done:
  return error;
}


/* *INDENT-OFF* */
/*?
 * Interface admin up/down
 *
 * @cliexpar
 * @cliexstart{set interface state}
 *  vpp# set interface state GigabitEthernet2/0/0 up
 *  vpp# set interface state GigabitEthernet2/0/0 down
 * @cliexend
 ?*/
VLIB_CLI_COMMAND (set_state_command, static) = {
  .path = "set interface state",
  .short_help = "Set interface state",
  .function = set_state,
};
/* *INDENT-ON* */

static clib_error_t *
set_unnumbered (vlib_main_t * vm,
		unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  u32 unnumbered_sw_if_index;
  u32 inherit_from_sw_if_index;
  vnet_sw_interface_t *si;
  int is_set = 0;
  int is_del = 0;

  if (unformat (input, "%U use %U",
		unformat_vnet_sw_interface, vnm, &unnumbered_sw_if_index,
		unformat_vnet_sw_interface, vnm, &inherit_from_sw_if_index))
    is_set = 1;
  else if (unformat (input, "del %U",
		     unformat_vnet_sw_interface, vnm,
		     &unnumbered_sw_if_index))
    is_del = 1;
  else
    return clib_error_return (0, "parse error '%U'",
			      format_unformat_error, input);

  si = vnet_get_sw_interface (vnm, unnumbered_sw_if_index);
  if (is_del)
    {
      si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
      si->unnumbered_sw_if_index = (u32) ~ 0;
      ip4_sw_interface_enable_disable (unnumbered_sw_if_index, 0);
      ip6_sw_interface_enable_disable (unnumbered_sw_if_index, 0);
    }
  else if (is_set)
    {
      si->flags |= VNET_SW_INTERFACE_FLAG_UNNUMBERED;
      si->unnumbered_sw_if_index = inherit_from_sw_if_index;
      ip4_sw_interface_enable_disable (unnumbered_sw_if_index, 1);
      ip6_sw_interface_enable_disable (unnumbered_sw_if_index, 1);
    }

  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_unnumbered_command, static) = {
  .path = "set interface unnumbered",
  .short_help = "set interface unnumbered [<intfc> use <intfc> | del <intfc>]",
  .function = set_unnumbered,
};
/* *INDENT-ON* */



static clib_error_t *
set_hw_class (vlib_main_t * vm,
	      unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  vnet_interface_main_t *im = &vnm->interface_main;
  clib_error_t *error;
  u32 hw_if_index, hw_class_index;

  hw_if_index = ~0;
  if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
    {
      error = clib_error_return (0, "unknown hardware interface `%U'",
				 format_unformat_error, input);
      goto done;
    }

  if (!unformat_user (input, unformat_hash_string,
		      im->hw_interface_class_by_name, &hw_class_index))
    {
      error = clib_error_return (0, "unknown hardware class `%U'",
				 format_unformat_error, input);
      goto done;
    }

  error = vnet_hw_interface_set_class (vnm, hw_if_index, hw_class_index);
  if (error)
    goto done;

done:
  return error;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_hw_class_command, static) = {
  .path = "set interface hw-class",
  .short_help = "Set interface hardware class",
  .function = set_hw_class,
};
/* *INDENT-ON* */

static clib_error_t *
vnet_interface_cli_init (vlib_main_t * vm)
{
  return 0;
}

VLIB_INIT_FUNCTION (vnet_interface_cli_init);

static clib_error_t *
renumber_interface_command_fn (vlib_main_t * vm,
			       unformat_input_t * input,
			       vlib_cli_command_t * cmd)
{
  u32 hw_if_index;
  u32 new_dev_instance;
  vnet_main_t *vnm = vnet_get_main ();
  int rv;

  if (!unformat_user (input, unformat_vnet_hw_interface, vnm, &hw_if_index))
    return clib_error_return (0, "unknown hardware interface `%U'",
			      format_unformat_error, input);

  if (!unformat (input, "%d", &new_dev_instance))
    return clib_error_return (0, "new dev instance missing");

  rv = vnet_interface_name_renumber (hw_if_index, new_dev_instance);

  switch (rv)
    {
    case 0:
      break;

    default:
      return clib_error_return (0, "vnet_interface_name_renumber returned %d",
				rv);

    }

  return 0;
}


/* *INDENT-OFF* */
VLIB_CLI_COMMAND (renumber_interface_command, static) = {
  .path = "renumber interface",
  .short_help = "renumber interface <if-name> <new-dev-instance>",
  .function = renumber_interface_command_fn,
};
/* *INDENT-ON* */

static clib_error_t *
promiscuous_cmd (vlib_main_t * vm,
		 unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  u32 hw_if_index;
  u32 flags = ETHERNET_INTERFACE_FLAG_ACCEPT_ALL;
  ethernet_main_t *em = &ethernet_main;
  ethernet_interface_t *eif;

  if (unformat (input, "on %U",
		unformat_vnet_hw_interface, vnm, &hw_if_index))
    ;
  else if (unformat (input, "off %U",
		     unformat_ethernet_interface, vnm, &hw_if_index))
    flags = 0;
  else
    return clib_error_return (0, "unknown input `%U'",
			      format_unformat_error, input);

  eif = ethernet_get_interface (em, hw_if_index);
  if (!eif)
    return clib_error_return (0, "not supported");

  ethernet_set_flags (vnm, hw_if_index, flags);
  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_interface_promiscuous_cmd, static) = {
  .path = "set interface promiscuous",
  .short_help = "set interface promiscuous [on | off] <intfc>",
  .function = promiscuous_cmd,
};
/* *INDENT-ON* */

static clib_error_t *
mtu_cmd (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  u32 hw_if_index, mtu;
  u32 flags = ETHERNET_INTERFACE_FLAG_MTU;
  ethernet_main_t *em = &ethernet_main;

  if (unformat (input, "%d %U", &mtu,
		unformat_vnet_hw_interface, vnm, &hw_if_index))
    {
      vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
      ethernet_interface_t *eif = ethernet_get_interface (em, hw_if_index);

      if (!eif)
	return clib_error_return (0, "not supported");

      if (mtu < hi->min_supported_packet_bytes)
	return clib_error_return (0, "Invalid mtu (%d): "
				  "must be >= min pkt bytes (%d)", mtu,
				  hi->min_supported_packet_bytes);

      if (mtu > hi->max_supported_packet_bytes)
	return clib_error_return (0, "Invalid mtu (%d): must be <= (%d)", mtu,
				  hi->max_supported_packet_bytes);

      if (hi->max_packet_bytes != mtu)
	{
	  hi->max_packet_bytes = mtu;
	  ethernet_set_flags (vnm, hw_if_index, flags);
	}
    }
  else
    return clib_error_return (0, "unknown input `%U'",
			      format_unformat_error, input);
  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_interface_mtu_cmd, static) = {
  .path = "set interface mtu",
  .short_help = "set interface mtu <value> <intfc>",
  .function = mtu_cmd,
};
/* *INDENT-ON* */

static clib_error_t *
set_interface_mac_address (vlib_main_t * vm, unformat_input_t * input,
			   vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  clib_error_t *error = 0;
  u32 sw_if_index = ~0;
  u64 mac = 0;

  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
    {
      error = clib_error_return (0, "unknown interface `%U'",
				 format_unformat_error, input);
      goto done;
    }
  if (!unformat_user (input, unformat_ethernet_address, &mac))
    {
      error = clib_error_return (0, "expected mac address `%U'",
				 format_unformat_error, input);
      goto done;
    }
  error = vnet_hw_interface_change_mac_address (vnm, sw_if_index, mac);
done:
  return error;
}

/*?
 * The '<em>set interface mac address </em>' command allows to set MAC address of given interface.
 * In case of NIC interfaces the one has to support MAC address change. A side effect of MAC address
 * change are changes of MAC addresses in FIB tables (ipv4 and ipv6).
 *
 * @cliexpar
 * @parblock
 * Example of how to change MAC Address of interface:
 * @cliexcmd{set interface mac address GigabitEthernet0/8/0 aa:bb:cc:dd:ee:01}
 * @cliexcmd{set interface mac address host-vpp0 aa:bb:cc:dd:ee:02}
 * @cliexcmd{set interface mac address tap-0 aa:bb:cc:dd:ee:03}
 * @cliexcmd{set interface mac address pg0 aa:bb:cc:dd:ee:04}
 * @endparblock
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_interface_mac_address_cmd, static) = {
  .path = "set interface mac address",
  .short_help = "set interface mac address <intfc> <mac-address>",
  .function = set_interface_mac_address,
};
/* *INDENT-ON* */

static clib_error_t *
set_tag (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  u32 sw_if_index = ~0;
  u8 *tag = 0;

  if (!unformat (input, "%U %s", unformat_vnet_sw_interface,
		 vnm, &sw_if_index, &tag))
    return clib_error_return (0, "unknown input `%U'",
			      format_unformat_error, input);

  vnet_set_sw_interface_tag (vnm, tag, sw_if_index);

  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_tag_command, static) = {
  .path = "set interface tag",
  .short_help = "set interface tag <intfc> <tag>",
  .function = set_tag,
};
/* *INDENT-ON* */

static clib_error_t *
clear_tag (vlib_main_t * vm, unformat_input_t * input,
	   vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  u32 sw_if_index = ~0;

  if (!unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
    return clib_error_return (0, "unknown input `%U'",
			      format_unformat_error, input);

  vnet_clear_sw_interface_tag (vnm, sw_if_index);

  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (clear_tag_command, static) = {
  .path = "clear interface tag",
  .short_help = "clear interface tag <intfc>",
  .function = clear_tag,
};
/* *INDENT-ON* */


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