text: /*
   * 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/ip4_cli.c: ip4 commands
   *
   * 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>
  
  /**
   * @file
   * @brief Set IP Address.
   *
   * Configure an IPv4 or IPv6 address for on an interface.
   */
  
  
  int
  ip4_address_compare (ip4_address_t * a1, ip4_address_t * a2)
  {
    return clib_net_to_host_u32 (a1->data_u32) -
      clib_net_to_host_u32 (a2->data_u32);
  }
  
  int
  ip6_address_compare (ip6_address_t * a1, ip6_address_t * a2)
  {
    int i;
    for (i = 0; i < ARRAY_LEN (a1->as_u16); i++)
      {
        int cmp =
  	clib_net_to_host_u16 (a1->as_u16[i]) -
  	clib_net_to_host_u16 (a2->as_u16[i]);
        if (cmp != 0)
  	return cmp;
      }
    return 0;
  }
  
  /* *INDENT-OFF* */
  VLIB_CLI_COMMAND (set_interface_ip_command, static) = {
    .path = "set interface ip",
    .short_help = "IP4/IP6 commands",
  };
  /* *INDENT-ON* */
  
  void
  ip_del_all_interface_addresses (vlib_main_t * vm, u32 sw_if_index)
  {
    ip4_main_t *im4 = &ip4_main;
    ip4_address_t *ip4_addrs = 0;
    u32 *ip4_masks = 0;
    ip6_main_t *im6 = &ip6_main;
    ip6_address_t *ip6_addrs = 0;
    u32 *ip6_masks = 0;
    ip_interface_address_t *ia;
    int i;
  
    /* *INDENT-OFF* */
    foreach_ip_interface_address (&im4->lookup_main, ia, sw_if_index,
                                  0 /* honor unnumbered */,
    ({
      ip4_address_t * x = (ip4_address_t *)
        ip_interface_address_get_address (&im4->lookup_main, ia);
      vec_add1 (ip4_addrs, x[0]);
      vec_add1 (ip4_masks, ia->address_length);
    }));
    /* *INDENT-ON* */
  
    /* *INDENT-OFF* */
    foreach_ip_interface_address (&im6->lookup_main, ia, sw_if_index,
                                  0 /* honor unnumbered */,
    ({
      ip6_address_t * x = (ip6_address_t *)
        ip_interface_address_get_address (&im6->lookup_main, ia);
      vec_add1 (ip6_addrs, x[0]);
      vec_add1 (ip6_masks, ia->address_length);
    }));
    /* *INDENT-ON* */
  
    for (i = 0; i < vec_len (ip4_addrs); i++)
      ip4_add_del_interface_address (vm, sw_if_index, &ip4_addrs[i],
  				   ip4_masks[i], 1 /* is_del */ );
    for (i = 0; i < vec_len (ip6_addrs); i++)
      ip6_add_del_interface_address (vm, sw_if_index, &ip6_addrs[i],
  				   ip6_masks[i], 1 /* is_del */ );
  
    vec_free (ip4_addrs);
    vec_free (ip4_masks);
    vec_free (ip6_addrs);
    vec_free (ip6_masks);
  }
  
  static clib_error_t *
  ip_address_delete_cleanup (vnet_main_t * vnm, u32 hw_if_index, u32 is_create)
  {
    vlib_main_t *vm = vlib_get_main ();
    vnet_hw_interface_t *hw;
  
    if (is_create)
      return 0;
  
    hw = vnet_get_hw_interface (vnm, hw_if_index);
  
    ip_del_all_interface_addresses (vm, hw->sw_if_index);
    return 0;
  }
  
  VNET_HW_INTERFACE_ADD_DEL_FUNCTION (ip_address_delete_cleanup);
  
  static clib_error_t *
  add_del_ip_address (vlib_main_t * vm,
  		    unformat_input_t * input, vlib_cli_command_t * cmd)
  {
    vnet_main_t *vnm = vnet_get_main ();
    ip4_address_t a4;
    ip6_address_t a6;
    clib_error_t *error = 0;
    u32 sw_if_index, length, is_del;
  
    sw_if_index = ~0;
    is_del = 0;
  
    if (unformat (input, "del"))
      is_del = 1;
  
    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 (is_del && unformat (input, "all"))
      ip_del_all_interface_addresses (vm, sw_if_index);
    else if (unformat (input, "%U/%d", unformat_ip4_address, &a4, &length))
      error = ip4_add_del_interface_address (vm, sw_if_index, &a4, length,
  					   is_del);
    else if (unformat (input, "%U/%d", unformat_ip6_address, &a6, &length))
      error = ip6_add_del_interface_address (vm, sw_if_index, &a6, length,
  					   is_del);
    else
      {
        error = clib_error_return (0, "expected IP4/IP6 address/length `%U'",
  				 format_unformat_error, input);
        goto done;
      }
  
  
  done:
    return error;
  }
  
  /*?
   * Add an IP Address to an interface or remove and IP Address from an interface.
   * The IP Address can be an IPv4 or an IPv6 address. Interfaces may have multiple
   * IPv4 and IPv6 addresses. There is no concept of primary vs. secondary
   * interface addresses; they're just addresses.
   *
   * To display the addresses associated with a given interface, use the command
   * '<em>show interface address <interface></em>'.
   *
   * Note that the debug CLI does not enforce classful mask-width / addressing
   * constraints.
   *
   * @cliexpar
   * @parblock
   * An example of how to add an IPv4 address to an interface:
   * @cliexcmd{set interface ip address GigabitEthernet2/0/0 172.16.2.12/24}
   *
   * An example of how to add an IPv6 address to an interface:
   * @cliexcmd{set interface ip address GigabitEthernet2/0/0 @::a:1:1:0:7/126}
   *
   * To delete a specific interface ip address:
   * @cliexcmd{set interface ip address GigabitEthernet2/0/0 172.16.2.12/24 del}
   *
   * To delete all interfaces addresses (IPv4 and IPv6):
   * @cliexcmd{set interface ip address GigabitEthernet2/0/0 del all}
   * @endparblock
   ?*/
  /* *INDENT-OFF* */
  VLIB_CLI_COMMAND (set_interface_ip_address_command, static) = {
    .path = "set interface ip address",
    .function = add_del_ip_address,
    .short_help = "set interface ip address [del] <interface> <ip-addr>/<mask> | [all]",
  };
  /* *INDENT-ON* */
  
  /* Dummy init function to get us linked in. */
  static clib_error_t *
  ip4_cli_init (vlib_main_t * vm)
  {
    return 0;
  }
  
  VLIB_INIT_FUNCTION (ip4_cli_init);
  
  /*
   * fd.io coding-style-patch-verification: ON
   *
   * Local Variables:
   * eval: (c-set-style "gnu")
   * End:
   */
  