vpp/app/vpe_cli.c

   1 /*
   2  * Copyright (c) 2015 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15 #include <vnet/ip/ip.h>
  16 #include <vnet/ethernet/ethernet.h>
  17
  18 typedef struct {
  19     u8 mac_addr[6];
  20 } mac_addr_t;
  21
  22 static clib_error_t *
  23 virtual_ip_cmd_fn_command_fn (vlib_main_t * vm,
  24                  unformat_input_t * input,
  25                  vlib_cli_command_t * cmd)
  26 {
  27     unformat_input_t _line_input, * line_input = &_line_input;
  28     vnet_main_t * vnm = vnet_get_main();
  29     ip4_main_t * im = &ip4_main;
  30     ip_lookup_main_t * lm = &im->lookup_main;
  31     ip4_address_t ip_addr, next_hop;
  32     u8 mac_addr[6];
  33     mac_addr_t *mac_addrs = 0;
  34     u32 sw_if_index;
  35     u32 i, f;
  36
  37     /* Get a line of input. */
  38     if (! unformat_user (input, unformat_line_input, line_input))
  39         return 0;
  40
  41     if (!unformat(line_input, "%U %U",
  42                   unformat_ip4_address, &ip_addr,
  43                   unformat_vnet_sw_interface, vnm, &sw_if_index))
  44         goto barf;
  45
  46     while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
  47         if (unformat (line_input, "mac %U",
  48                       unformat_ethernet_address,
  49                       &mac_addr))
  50         {
  51             mac_addr_t *ma;
  52             vec_add2 (mac_addrs, ma, 1);
  53             memcpy(ma, mac_addr, sizeof (mac_addr));
  54         } else {
  55         barf:
  56             return clib_error_return (0, "unknown input `%U'",
  57                                       format_unformat_error, input);
  58         }
  59     }
  60     if (vec_len (mac_addrs) == 0)
  61         goto barf;
  62
  63     /* Create / delete special interface route /32's */
  64     next_hop.as_u32 = 0;
  65
  66     for (i = 0; i < vec_len(mac_addrs); i++) {
  67         ip_adjacency_t adj;
  68         u32 adj_index;
  69
  70         adj.lookup_next_index = IP_LOOKUP_NEXT_REWRITE;
  71
  72         vnet_rewrite_for_sw_interface
  73             (vnm,
  74              VNET_L3_PACKET_TYPE_IP4,
  75              sw_if_index,
  76              ip4_rewrite_node.index,
  77              &mac_addrs[i],     /* destination address */
  78              &adj.rewrite_header,
  79              sizeof (adj.rewrite_data));
  80
  81         ip_add_adjacency (lm, &adj, 1 /* one adj */,
  82                           &adj_index);
  83
  84         f = (i + 1 < vec_len(mac_addrs)) ? IP4_ROUTE_FLAG_NOT_LAST_IN_GROUP : 0;
  85         ip4_add_del_route_next_hop (im,
  86                                     IP4_ROUTE_FLAG_ADD | f,
  87                                     &ip_addr,
  88                                     32 /* insert /32's */,
  89                                     &next_hop,
  90                                     sw_if_index,
  91                                     1 /* weight */,
  92                                     adj_index,
  93                                     (u32)~0 /* explicit fib index */);
  94     }
  95
  96     vec_free (mac_addrs);
  97
  98     return 0;
  99 }
 100
 101 VLIB_CLI_COMMAND (virtual_ip_cmd_fn_command, static) = {
 102     .path = "ip virtual",
 103     .short_help = "ip virtual <addr> <interface> [mac <Mi>]+",
 104     .function = virtual_ip_cmd_fn_command_fn,
 105 };