src/f_neigh.c

   1 /*
   2  * src/f_neigh.c        Neighbour Filter
   3  *
   4  *      This library is free software; you can redistribute it and/or
   5  *      modify it under the terms of the GNU Lesser General Public
   6  *      License as published by the Free Software Foundation version 2.1
   7  *      of the License.
   8  *
   9  * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
  10  */
  11
  12 static void get_filter(struct rtnl_neigh *n, int ac, char **av, int idx,
  13                        struct nl_cache *cache)
  14 {
  15         struct nl_cache *lc = nl_cache_mngt_require("route/link");
  16
  17         while (ac > idx) {
  18                 if (!strcasecmp(av[idx], "dev")) {
  19                         if (ac > ++idx) {
  20                                 int ifindex = rtnl_link_name2i(lc, av[idx++]);
  21                                 if (ifindex == RTNL_LINK_NOT_FOUND)
  22                                         goto err_notfound;
  23                                 rtnl_neigh_set_ifindex(n, ifindex);
  24                         }
  25                 } else if (!strcasecmp(av[idx], "dst")) {
  26                         if (ac > ++idx) {
  27                                 struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC);
  28                                 if (a == NULL)
  29                                         goto err;
  30                                 rtnl_neigh_set_dst(n, a);
  31                                 nl_addr_put(a);
  32                         }
  33                 } else if (!strcasecmp(av[idx], "lladdr")) {
  34                         if (ac > ++idx) {
  35                                 struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC);
  36                                 if (a == NULL)
  37                                         goto err;
  38                                 rtnl_neigh_set_lladdr(n, a);
  39                                 nl_addr_put(a);
  40                         }
  41                 }
  42         }
  43
  44         return;
  45 err_notfound:
  46         fprintf(stderr, "Unable to find interface %s\n", av[idx-1]);
  47         exit(1);
  48 err:
  49         fprintf(stderr, "%s\n", nl_geterror());
  50         exit(1);
  51 }