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path: root/src/vnet/ethernet/mac_address.c
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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.
 */

#include <vnet/ethernet/mac_address.h>

/* *INDENT-OFF* */
const mac_address_t ZERO_MAC_ADDRESS = {
  .bytes = {
    0, 0, 0, 0, 0, 0,
  },
};
/* *INDENT-ON* */

u8 *
format_mac_address_t (u8 * s, va_list * args)
{
  const mac_address_t *mac = va_arg (*args, mac_address_t *);

  return format (s, "%02x:%02x:%02x:%02x:%02x:%02x",
		 mac->bytes[0], mac->bytes[1], mac->bytes[2],
		 mac->bytes[3], mac->bytes[4], mac->bytes[5]);
}

uword
unformat_mac_address_t (unformat_input_t * input, va_list * args)
{
  mac_address_t *mac = va_arg (*args, mac_address_t *);
  u32 i, a[3];

  if (unformat (input, "%_%X:%X:%X:%X:%X:%X%_",
		1, &mac->bytes[0], 1, &mac->bytes[1], 1, &mac->bytes[2],
		1, &mac->bytes[3], 1, &mac->bytes[4], 1, &mac->bytes[5]))
    return (1);
  else if (unformat (input, "%_%x.%x.%x%_", &a[0], &a[1], &a[2]))
    {
      for (i = 0; i < ARRAY_LEN (a); i++)
	if (a[i] >= (1 << 16))
	  return 0;

      mac->bytes[0] = (a[0] >> 8) & 0xff;
      mac->bytes[1] = (a[0] >> 0) & 0xff;
      mac->bytes[2] = (a[1] >> 8) & 0xff;
      mac->bytes[3] = (a[1] >> 0) & 0xff;
      mac->bytes[4] = (a[2] >> 8) & 0xff;
      mac->bytes[5] = (a[2] >> 0) & 0xff;

      return (1);
    }
  return (0);
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
a> 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
/*
 * 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.
 */
/*
 * ip/ip_lookup.c: ip4/6 adjacency and lookup table management
 *
 * 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.
 */

#include <vnet/ip/ip.h>
#include <vnet/adj/adj.h>
#include <vnet/fib/fib_table.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/fib/ip6_fib.h>
#include <vnet/mpls/mpls.h>
#include <vnet/mfib/mfib_table.h>
#include <vnet/dpo/drop_dpo.h>
#include <vnet/dpo/classify_dpo.h>
#include <vnet/dpo/punt_dpo.h>
#include <vnet/dpo/receive_dpo.h>
#include <vnet/dpo/ip_null_dpo.h>

/**
 * @file
 * @brief IPv4 and IPv6 adjacency and lookup table management.
 *
 */

static clib_error_t *
ip_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
{
  vec_validate_init_empty (ip4_main.
			   lookup_main.if_address_pool_index_by_sw_if_index,
			   sw_if_index, ~0);
  vec_validate_init_empty (ip6_main.
			   lookup_main.if_address_pool_index_by_sw_if_index,
			   sw_if_index, ~0);

  return (NULL);
}

VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip_sw_interface_add_del);

void
ip_lookup_init (ip_lookup_main_t * lm, u32 is_ip6)
{
  if (!lm->fib_result_n_bytes)
    lm->fib_result_n_bytes = sizeof (uword);

  lm->is_ip6 = is_ip6;
  mhash_init (&lm->prefix_to_if_prefix_index, sizeof (uword),
	      sizeof (ip_interface_prefix_key_t));
  if (is_ip6)
    {
      lm->format_address_and_length = format_ip6_address_and_length;
      mhash_init (&lm->address_to_if_address_index, sizeof (uword),
		  sizeof (ip6_address_fib_t));
    }
  else
    {
      lm->format_address_and_length = format_ip4_address_and_length;
      mhash_init (&lm->address_to_if_address_index, sizeof (uword),
		  sizeof (ip4_address_fib_t));
    }

  {
    int i;

    /* Setup all IP protocols to be punted and builtin-unknown. */
    for (i = 0; i < 256; i++)
      {
	lm->local_next_by_ip_protocol[i] = IP_LOCAL_NEXT_PUNT;
	lm->builtin_protocol_by_ip_protocol[i] = IP_BUILTIN_PROTOCOL_UNKNOWN;
      }

    lm->local_next_by_ip_protocol[IP_PROTOCOL_UDP] = IP_LOCAL_NEXT_UDP_LOOKUP;
    lm->local_next_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
				  IP_PROTOCOL_ICMP] = IP_LOCAL_NEXT_ICMP;
    lm->builtin_protocol_by_ip_protocol[IP_PROTOCOL_UDP] =
      IP_BUILTIN_PROTOCOL_UDP;
    lm->builtin_protocol_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 :
					IP_PROTOCOL_ICMP] =
      IP_BUILTIN_PROTOCOL_ICMP;
  }
}

u8 *
format_ip_flow_hash_config (u8 * s, va_list * args)
{
  flow_hash_config_t flow_hash_config = va_arg (*args, u32);

#define _(n, b, v)                                                            \
  if (flow_hash_config & v)                                                   \
    s = format (s, "%s ", #n);
  foreach_flow_hash_bit;
#undef _

  return s;
}

u8 *
format_ip_adjacency_packet_data (u8 * s, va_list * args)
{
  u8 *packet_data = va_arg (*args, u8 *);
  u32 n_packet_data_bytes = va_arg (*args, u32);

  s = format (s, "%U", format_hex_bytes, packet_data, n_packet_data_bytes);

  return s;
}

static uword
unformat_dpo (unformat_input_t * input, va_list * args)
{
  dpo_id_t *dpo = va_arg (*args, dpo_id_t *);
  fib_protocol_t fp = va_arg (*args, int);
  dpo_proto_t proto;

  proto = fib_proto_to_dpo (fp);

  if (unformat (input, "drop"))
    dpo_copy (dpo, drop_dpo_get (proto));
  else if (unformat (input, "punt"))
    dpo_copy (dpo, punt_dpo_get (proto));
  else if (unformat (input, "local"))
    receive_dpo_add_or_lock (proto, ~0, NULL, dpo);
  else if (unformat (input, "null-send-unreach"))
    ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_UNREACH, dpo);
  else if (unformat (input, "null-send-prohibit"))
    ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_PROHIBIT, dpo);
  else if (unformat (input, "null"))
    ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_NONE, dpo);
  else if (unformat (input, "classify"))
    {
      u32 classify_table_index;

      if (!unformat (input, "%d", &classify_table_index))
	{
	  clib_warning ("classify adj must specify table index");
	  return 0;
	}

      dpo_set (dpo, DPO_CLASSIFY, proto,
	       classify_dpo_create (proto, classify_table_index));
    }
  else
    return 0;

  return 1;
}

const ip46_address_t zero_addr = {
  .as_u64 = {
	     0, 0},
};

static clib_error_t *
vnet_ip_route_cmd (vlib_main_t * vm,
		   unformat_input_t * main_input, vlib_cli_command_t * cmd)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  u32 table_id, is_del, fib_index, payload_proto;
  dpo_id_t dpo = DPO_INVALID, *dpos = NULL;
  fib_route_path_t *rpaths = NULL, rpath;
  fib_prefix_t *prefixs = NULL, pfx;
  clib_error_t *error = NULL;
  f64 count;
  int i;

  is_del = 0;
  table_id = 0;
  count = 1;
  clib_memset (&pfx, 0, sizeof (pfx));

  /* Get a line of input. */
  if (!unformat_user (main_input, unformat_line_input, line_input))
    return 0;

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
    {
      clib_memset (&rpath, 0, sizeof (rpath));

      if (unformat (line_input, "table %d", &table_id))
	;
      else if (unformat (line_input, "count %f", &count))
	;

      else if (unformat (line_input, "%U/%d",
			 unformat_ip4_address, &pfx.fp_addr.ip4, &pfx.fp_len))
	{
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP4;
	  vec_add1 (prefixs, pfx);
	}
      else if (unformat (line_input, "%U/%d",
			 unformat_ip6_address, &pfx.fp_addr.ip6, &pfx.fp_len))
	{
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP6;
	  vec_add1 (prefixs, pfx);
	}
      else if (unformat (line_input, "via %U",
			 unformat_fib_route_path, &rpath, &payload_proto))
	{
	  vec_add1 (rpaths, rpath);
	}
      else if (vec_len (prefixs) > 0 &&
	       unformat (line_input, "via %U",
			 unformat_dpo, &dpo, prefixs[0].fp_proto))
	{
	  vec_add1 (dpos, dpo);
	}
      else if (unformat (line_input, "del"))
	is_del = 1;
      else if (unformat (line_input, "add"))
	is_del = 0;
      else
	{
	  error = unformat_parse_error (line_input);
	  goto done;
	}
    }

  if (vec_len (prefixs) == 0)
    {
      error =
	clib_error_return (0, "expected ip4/ip6 destination address/length.");
      goto done;
    }

  if (!is_del && vec_len (rpaths) + vec_len (dpos) == 0)
    {
      error = clib_error_return (0, "expected paths.");
      goto done;
    }

  if (~0 == table_id)
    {
      /*
       * if no table_id is passed we will manipulate the default
       */
      fib_index = 0;
    }
  else
    {
      fib_index = fib_table_find (prefixs[0].fp_proto, table_id);

      if (~0 == fib_index)
	{
	  error = clib_error_return (0, "Nonexistent table id %d", table_id);
	  goto done;
	}
    }

  for (i = 0; i < vec_len (prefixs); i++)
    {
      if (is_del && 0 == vec_len (rpaths))
	{
	  fib_table_entry_delete (fib_index, &prefixs[i], FIB_SOURCE_CLI);
	}
      else if (!is_del && 1 == vec_len (dpos))
	{
	  fib_table_entry_special_dpo_add (fib_index,
					   &prefixs[i],
					   FIB_SOURCE_CLI,
					   FIB_ENTRY_FLAG_EXCLUSIVE,
					   &dpos[0]);
	  dpo_reset (&dpos[0]);
	}
      else if (vec_len (dpos) > 0)
	{
	  error =
	    clib_error_return (0,
			       "Load-balancing over multiple special adjacencies is unsupported");
	  goto done;
	}
      else if (0 < vec_len (rpaths))
	{
	  u32 k, n;
	  f64 t[2];
	  n = count;
	  t[0] = vlib_time_now (vm);

	  for (k = 0; k < n; k++)
	    {
	      fib_prefix_t rpfx = {
		.fp_len = prefixs[i].fp_len,
		.fp_proto = prefixs[i].fp_proto,
		.fp_addr = prefixs[i].fp_addr,
	      };

	      if (is_del)
		fib_table_entry_path_remove2 (fib_index,
					      &rpfx, FIB_SOURCE_CLI, rpaths);
	      else
		fib_table_entry_path_add2 (fib_index,
					   &rpfx,
					   FIB_SOURCE_CLI,
					   FIB_ENTRY_FLAG_NONE, rpaths);

	      fib_prefix_increment (&prefixs[i]);
	    }

	  t[1] = vlib_time_now (vm);
	  if (count > 1)
	    vlib_cli_output (vm, "%.6e routes/sec", count / (t[1] - t[0]));
	}
      else
	{
	  error = clib_error_return (0, "Don't understand what you want...");
	  goto done;
	}
    }

done:
  vec_free (dpos);
  vec_free (prefixs);
  vec_free (rpaths);
  unformat_free (line_input);
  return error;
}

clib_error_t *
vnet_ip_table_cmd (vlib_main_t * vm,
		   unformat_input_t * main_input,
		   vlib_cli_command_t * cmd, fib_protocol_t fproto)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  clib_error_t *error = NULL;
  u32 table_id, is_add;
  u8 *name = NULL;

  is_add = 1;
  table_id = ~0;

  /* Get a line of input. */
  if (!unformat_user (main_input, unformat_line_input, line_input))
    return 0;

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (line_input, "%d", &table_id))
	;
      else if (unformat (line_input, "del"))
	is_add = 0;
      else if (unformat (line_input, "add"))
	is_add = 1;
      else if (unformat (line_input, "name %s", &name))
	;
      else
	{
	  error = unformat_parse_error (line_input);
	  goto done;
	}
    }

  if (0 == table_id)
    {
      error = clib_error_return (0, "Can't change the default table");
      goto done;
    }
  else
	{
	  if (is_add)
	    {
	      if (~0 == table_id)
		{
		  table_id = ip_table_get_unused_id (fproto);
		  vlib_cli_output (vm, "%u\n", table_id);
		}
	      ip_table_create (fproto, table_id, 0, name);
	    }
	  else
	    {
	      if (~0 == table_id)
		{
		  error = clib_error_return (0, "No table id");
		  goto done;
		}
	      ip_table_delete (fproto, table_id, 0);
	    }
	}

done:
  vec_free (name);
  unformat_free (line_input);
  return error;
}

clib_error_t *
vnet_ip4_table_cmd (vlib_main_t * vm,
		    unformat_input_t * main_input, vlib_cli_command_t * cmd)
{
  return (vnet_ip_table_cmd (vm, main_input, cmd, FIB_PROTOCOL_IP4));
}

clib_error_t *
vnet_ip6_table_cmd (vlib_main_t * vm,
		    unformat_input_t * main_input, vlib_cli_command_t * cmd)
{
  return (vnet_ip_table_cmd (vm, main_input, cmd, FIB_PROTOCOL_IP6));
}

clib_error_t *
vnet_show_ip_table_cmd (vlib_main_t *vm, unformat_input_t *main_input,
			vlib_cli_command_t *cmd, fib_protocol_t fproto)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  fib_table_t *fib, *fibs;
  clib_error_t *error = NULL;
  u32 table_id = ~0, fib_index;
  /* Get a line of input. */
  if (unformat_user (main_input, unformat_line_input, line_input))
    {
      while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
	{
	  if (unformat (line_input, "%d", &table_id))
	    ;
	  else
	    {
	      error = unformat_parse_error (line_input);
	      goto done;
	    }
	}
      unformat_free (line_input);
    }

  fibs = (fproto == FIB_PROTOCOL_IP4) ? ip4_main.fibs : ip6_main.fibs;

  if (table_id != (u32) ~0)
    {
      fib_index = fib_table_find (fproto, table_id);
      if (fib_index == (u32) ~0)
	{
	  error = clib_error_return (0, "Couldn't find table with table_id %u",
				     table_id);
	  goto done;
	}

      fib = fib_table_get (fib_index, fproto);
      vlib_cli_output (vm, "[%3u] table_id:%3u %v", fib->ft_index,
		       fib->ft_table_id, fib->ft_desc);
    }
  else
    {
      pool_foreach (fib, fibs)
	vlib_cli_output (vm, "[%3u] table_id:%3u %v", fib->ft_index,
			 fib->ft_table_id, fib->ft_desc);
    }

done:
  return error;
}

clib_error_t *
vnet_show_ip4_table_cmd (vlib_main_t *vm, unformat_input_t *main_input,
			 vlib_cli_command_t *cmd)
{
  return (vnet_show_ip_table_cmd (vm, main_input, cmd, FIB_PROTOCOL_IP4));
}

clib_error_t *
vnet_show_ip6_table_cmd (vlib_main_t *vm, unformat_input_t *main_input,
			 vlib_cli_command_t *cmd)
{
  return (vnet_show_ip_table_cmd (vm, main_input, cmd, FIB_PROTOCOL_IP6));
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vlib_cli_ip_command, static) = {
  .path = "ip",
  .short_help = "Internet protocol (IP) commands",
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vlib_cli_ip6_command, static) = {
  .path = "ip6",
  .short_help = "Internet protocol version 6 (IPv6) commands",
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vlib_cli_show_ip_command, static) = {
  .path = "show ip",
  .short_help = "Internet protocol (IP) show commands",
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (vlib_cli_show_ip6_command, static) = {
  .path = "show ip6",
  .short_help = "Internet protocol version 6 (IPv6) show commands",
};
/* *INDENT-ON* */

/*?
 * This command is used to add or delete IPv4 or IPv6 routes. All
 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
 * can be IPv4 or IPv6, but all must be of the same form in a single
 * command. To display the current set of routes, use the commands
 * '<em>show ip fib</em>' and '<em>show ip6 fib</em>'.
 *
 * @cliexpar
 * Example of how to add a straight forward static route:
 * @cliexcmd{ip route add 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
 * Example of how to delete a straight forward static route:
 * @cliexcmd{ip route del 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0}
 * Mainly for route add/del performance testing, one can add or delete
 * multiple routes by adding 'count N' to the previous item:
 * @cliexcmd{ip route add count 10 7.0.0.0/24 via 6.0.0.1 GigabitEthernet2/0/0}
 * Add multiple routes for the same destination to create equal-cost multipath:
 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0}
 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0}
 * For unequal-cost multipath, specify the desired weights. This
 * combination of weights results in 3/4 of the traffic following the
 * second path, 1/4 following the first path:
 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 weight 1}
 * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 weight 3}
 * To add a route to a particular FIB table (VRF), use:
 * @cliexcmd{ip route add 172.16.24.0/24 table 7 via GigabitEthernet2/0/0}
 ?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (ip_route_command, static) = {
  .path = "ip route",
  .short_help = "ip route [add|del] [count <n>] <dst-ip-addr>/<width> [table <table-id>] via [next-hop-address] [next-hop-interface] [next-hop-table <value>] [weight <value>] [preference <value>] [udp-encap-id <value>] [ip4-lookup-in-table <value>] [ip6-lookup-in-table <value>] [mpls-lookup-in-table <value>] [resolve-via-host] [resolve-via-connected] [rx-ip4 <interface>] [out-labels <value value value>]",
  .function = vnet_ip_route_cmd,
  .is_mp_safe = 1,
};

/* *INDENT-ON* */
/*?
 * This command is used to add or delete IPv4  Tables. All
 * Tables must be explicitly added before that can be used. Creating a
 * table will add both unicast and multicast FIBs
 *
 ?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (ip4_table_command, static) = {
  .path = "ip table",
  .short_help = "ip table [add|del] <table-id>",
  .function = vnet_ip4_table_cmd,
};
/* *INDENT-ON* */

/* *INDENT-ON* */
/*?
 * This command is used to add or delete IPv4  Tables. All
 * Tables must be explicitly added before that can be used. Creating a
 * table will add both unicast and multicast FIBs
 *
 ?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (ip6_table_command, static) = {
  .path = "ip6 table",
  .short_help = "ip6 table [add|del] <table-id>",
  .function = vnet_ip6_table_cmd,
};

VLIB_CLI_COMMAND (show_ip4_table_command, static) = {
  .path = "show ip table",
  .short_help = "show ip table <table-id>",
  .function = vnet_show_ip4_table_cmd,
};

VLIB_CLI_COMMAND (show_ip6_table_command, static) = {
  .path = "show ip6 table",
  .short_help = "show ip6 table <table-id>",
  .function = vnet_show_ip6_table_cmd,
};

static clib_error_t *
ip_table_bind_cmd (vlib_main_t * vm,
                   unformat_input_t * input,
                   vlib_cli_command_t * cmd,
                   fib_protocol_t fproto)
{
  vnet_main_t *vnm = vnet_get_main ();
  clib_error_t *error = 0;
  u32 sw_if_index, table_id;
  int rv;

  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, "%d", &table_id))
    ;
  else
    {
      error = clib_error_return (0, "expected table id `%U'",
				 format_unformat_error, input);
      goto done;
    }

  rv = ip_table_bind (fproto, sw_if_index, table_id);

  if (VNET_API_ERROR_ADDRESS_FOUND_FOR_INTERFACE == rv)
    {
      error = clib_error_return (0, "IP addresses are still present on %U",
                                 format_vnet_sw_if_index_name,
                                 vnet_get_main(),
                                 sw_if_index);
    }
  else if (VNET_API_ERROR_NO_SUCH_FIB == rv)
    {
      error = clib_error_return (0, "no such table %d", table_id);
    }
  else if (0 != rv)
    {
      error = clib_error_return (0, "unknown error");
    }

 done:
  return error;
}

static clib_error_t *
ip4_table_bind_cmd (vlib_main_t * vm,
                    unformat_input_t * input,
                    vlib_cli_command_t * cmd)
{
  return (ip_table_bind_cmd (vm , input, cmd, FIB_PROTOCOL_IP4));
}

static clib_error_t *
ip6_table_bind_cmd (vlib_main_t * vm,
                    unformat_input_t * input,
                    vlib_cli_command_t * cmd)
{
  return (ip_table_bind_cmd (vm , input, cmd, FIB_PROTOCOL_IP6));
}

/*?
 * Place the indicated interface into the supplied IPv4 FIB table (also known
 * as a VRF). The FIB table must be created using "ip table add" already. To
 * display the current IPv4 FIB table, use the command '<em>show ip fib</em>'.
 * FIB table will only be displayed if a route has been added to the table, or
 * an IP Address is assigned to an interface in the table (which adds a route
 * automatically).
 *
 * @note IP addresses added after setting the interface IP table are added to
 * the indicated FIB table. If an IP address is added prior to changing the
 * table then this is an error. The control plane must remove these addresses
 * first and then change the table. VPP will not automatically move the
 * addresses from the old to the new table as it does not know the validity
 * of such a change.
 *
 * @cliexpar
 * Example of how to add an interface to an IPv4 FIB table (where 2 is the table-id):
 * @cliexcmd{set interface ip table GigabitEthernet2/0/0 2}
 ?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_interface_ip_table_command, static) =
{
  .path = "set interface ip table",
  .function = ip4_table_bind_cmd,
  .short_help = "set interface ip table <interface> <table-id>",
};
/* *INDENT-ON* */

/*?
 * Place the indicated interface into the supplied IPv6 FIB table (also known
 * as a VRF). The FIB table must be created using "ip6 table add" already. To
 * display the current IPv6 FIB table, use the command '<em>show ip6 fib</em>'.
 * FIB table will only be displayed if a route has been added to the table, or
 * an IP Address is assigned to an interface in the table (which adds a route
 * automatically).
 *
 * @note IP addresses added after setting the interface IP table are added to
 * the indicated FIB table. If an IP address is added prior to changing the
 * table then this is an error. The control plane must remove these addresses
 * first and then change the table. VPP will not automatically move the
 * addresses from the old to the new table as it does not know the validity
 * of such a change.
 *
 * @cliexpar
 * Example of how to add an interface to an IPv6 FIB table (where 2 is the table-id):
 * @cliexcmd{set interface ip6 table GigabitEthernet2/0/0 2}
 ?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (set_interface_ip6_table_command, static) =
{
  .path = "set interface ip6 table",
  .function = ip6_table_bind_cmd,
  .short_help = "set interface ip6 table <interface> <table-id>"
};
/* *INDENT-ON* */

clib_error_t *
vnet_ip_mroute_cmd (vlib_main_t * vm,
		    unformat_input_t * main_input, vlib_cli_command_t * cmd)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  fib_route_path_t rpath, *rpaths = NULL;
  clib_error_t *error = NULL;
  u32 table_id, is_del, payload_proto;
  mfib_prefix_t pfx;
  u32 fib_index;
  mfib_entry_flags_t eflags = 0;
  u32 gcount, scount, ss, gg, incr;
  f64 timet[2];
  u32 rpf_id = MFIB_RPF_ID_NONE;

  gcount = scount = 1;
  is_del = 0;
  table_id = 0;
  clib_memset (&pfx, 0, sizeof (pfx));
  clib_memset (&rpath, 0, sizeof (rpath));
  rpath.frp_sw_if_index = ~0;

  /* Get a line of input. */
  if (!unformat_user (main_input, unformat_line_input, line_input))
    return 0;

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (line_input, "table %d", &table_id))
	;
      else if (unformat (line_input, "del"))
	is_del = 1;
      else if (unformat (line_input, "add"))
	is_del = 0;
      else if (unformat (line_input, "rpf-id %d", &rpf_id))
	;
      else if (unformat (line_input, "scount %d", &scount))
	;
      else if (unformat (line_input, "gcount %d", &gcount))
	;
      else if (unformat (line_input, "%U %U",
			 unformat_ip4_address,
			 &pfx.fp_src_addr.ip4,
			 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
	{
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP4;
	  pfx.fp_len = 64;
	}
      else if (unformat (line_input, "%U %U",
			 unformat_ip6_address,
			 &pfx.fp_src_addr.ip6,
			 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
	{
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP6;
	  pfx.fp_len = 256;
	}
      else if (unformat (line_input, "%U/%d",
			 unformat_ip4_address,
			 &pfx.fp_grp_addr.ip4, &pfx.fp_len))
	{
	  clib_memset (&pfx.fp_src_addr.ip4, 0, sizeof (pfx.fp_src_addr.ip4));
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP4;
	}
      else if (unformat (line_input, "%U/%d",
			 unformat_ip6_address,
			 &pfx.fp_grp_addr.ip6, &pfx.fp_len))
	{
	  clib_memset (&pfx.fp_src_addr.ip6, 0, sizeof (pfx.fp_src_addr.ip6));
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP6;
	}
      else if (unformat (line_input, "%U",
			 unformat_ip4_address, &pfx.fp_grp_addr.ip4))
	{
	  clib_memset (&pfx.fp_src_addr.ip4, 0, sizeof (pfx.fp_src_addr.ip4));
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP4;
	  pfx.fp_len = 32;
	}
      else if (unformat (line_input, "%U",
			 unformat_ip6_address, &pfx.fp_grp_addr.ip6))
	{
	  clib_memset (&pfx.fp_src_addr.ip6, 0, sizeof (pfx.fp_src_addr.ip6));
	  payload_proto = pfx.fp_proto = FIB_PROTOCOL_IP6;
	  pfx.fp_len = 128;
	}
      else if (unformat (line_input, "via local Forward"))
	{
	  clib_memset (&rpath.frp_addr, 0, sizeof (rpath.frp_addr));
	  rpath.frp_sw_if_index = ~0;
	  rpath.frp_weight = 1;
	  rpath.frp_flags |= FIB_ROUTE_PATH_LOCAL;
	  /*
	   * set the path proto appropriately for the prefix
	   */
	  rpath.frp_proto = fib_proto_to_dpo (pfx.fp_proto);
	  rpath.frp_mitf_flags = MFIB_ITF_FLAG_FORWARD;

	  vec_add1 (rpaths, rpath);
	}
      else if (unformat (line_input, "via %U",
			 unformat_fib_route_path, &rpath, &payload_proto))
	{
	  vec_add1 (rpaths, rpath);
	}
      else if (unformat (line_input, "%U",
			 unformat_mfib_entry_flags, &eflags))
	;
      else
	{
	  error = unformat_parse_error (line_input);
	  goto done;
	}
    }

  if (~0 == table_id)
    {
      /*
       * if no table_id is passed we will manipulate the default
       */
      fib_index = 0;
    }
  else
    {
      fib_index = mfib_table_find (pfx.fp_proto, table_id);

      if (~0 == fib_index)
	{
	  error = clib_error_return (0, "Nonexistent table id %d", table_id);
	  goto done;
	}
    }

  timet[0] = vlib_time_now (vm);

  if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
    {
      incr = 1 << (32 - (pfx.fp_len % 32));
    }
  else
    {
      incr = 1 << (128 - (pfx.fp_len % 128));
    }

  for (ss = 0; ss < scount; ss++)
    {
      for (gg = 0; gg < gcount; gg++)
	{
	  if (is_del && 0 == vec_len (rpaths))
	    {
	      /* no path provided => route delete */
	      mfib_table_entry_delete (fib_index, &pfx, MFIB_SOURCE_CLI);
	    }
	  else if (eflags || (MFIB_RPF_ID_NONE != rpf_id))
	    {
	      mfib_table_entry_update (fib_index, &pfx, MFIB_SOURCE_CLI,
				       rpf_id, eflags);
	    }
	  else
	    {
	      if (is_del)
		mfib_table_entry_path_remove (fib_index,
					      &pfx, MFIB_SOURCE_CLI, rpaths);
	      else
		mfib_table_entry_path_update (fib_index, &pfx, MFIB_SOURCE_CLI,
					      MFIB_ENTRY_FLAG_NONE, rpaths);
	    }

	  if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
	    {
	      pfx.fp_grp_addr.ip4.as_u32 =
		clib_host_to_net_u32 (incr +
				      clib_net_to_host_u32 (pfx.
							    fp_grp_addr.ip4.
							    as_u32));
	    }
	  else
	    {
	      int bucket = (incr < 64 ? 0 : 1);
	      pfx.fp_grp_addr.ip6.as_u64[bucket] =
		clib_host_to_net_u64 (incr +
				      clib_net_to_host_u64 (pfx.
							    fp_grp_addr.ip6.as_u64
							    [bucket]));

	    }
	}
      if (FIB_PROTOCOL_IP4 == pfx.fp_proto)
	{
	  pfx.fp_src_addr.ip4.as_u32 =
	    clib_host_to_net_u32 (1 +
				  clib_net_to_host_u32 (pfx.fp_src_addr.
							ip4.as_u32));
	}
      else
	{
	  pfx.fp_src_addr.ip6.as_u64[1] =
	    clib_host_to_net_u64 (1 +
				  clib_net_to_host_u64 (pfx.fp_src_addr.
							ip6.as_u64[1]));
	}
    }

  timet[1] = vlib_time_now (vm);

  if (scount > 1 || gcount > 1)
    vlib_cli_output (vm, "%.6e routes/sec",
		     (scount * gcount) / (timet[1] - timet[0]));

done:
  vec_free (rpaths);
  unformat_free (line_input);

  return error;
}

/*?
 * This command is used to add or delete IPv4 or IPv6  multicast routes. All
 * IP Addresses ('<em><dst-ip-addr>/<width></em>',
 * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>')
 * can be IPv4 or IPv6, but all must be of the same form in a single
 * command. To display the current set of routes, use the commands
 * '<em>show ip mfib</em>' and '<em>show ip6 mfib</em>'.
 * The full set of support flags for interfaces and route is shown via;
 * '<em>show mfib route flags</em>' and '<em>show mfib itf flags</em>'
 * respectively.
 * @cliexpar
 * Example of how to add a forwarding interface to a route (and create the
 * route if it does not exist)
 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/0 Forward}
 * Example of how to add an accepting interface to a route (and create the
 * route if it does not exist)
 * @cliexcmd{ip mroute add 232.1.1.1 via GigabitEthernet2/0/1 Accept}
 * Example of changing the route's flags to send signals via the API
 * @cliexcmd{ip mroute add 232.1.1.1 Signal}

 ?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (ip_mroute_command, static) =
{
  .path = "ip mroute",
  .short_help = "ip mroute [add|del] <dst-ip-addr>/<width> [table <table-id>] [rpf-id <ID>] [via <next-hop-ip-addr> [<interface>],",
  .function = vnet_ip_mroute_cmd,
  .is_mp_safe = 1,
};
/* *INDENT-ON* */

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