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      1 /*
      2  * src/nl-neigh-delete.c     Delete a neighbour
      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) 2003-2009 Thomas Graf <tgraf (at) suug.ch>
     10  */
     11 
     12 #include <netlink/cli/utils.h>
     13 #include <netlink/cli/neigh.h>
     14 #include <netlink/cli/link.h>
     15 
     16 static int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
     17 struct nl_sock *sock;
     18 
     19 static void print_usage(void)
     20 {
     21 	printf(
     22 	"Usage: nl-neigh-delete [OPTION]... [NEIGHBOUR]\n"
     23 	"\n"
     24 	"Options\n"
     25 	" -i, --interactive     Run interactively\n"
     26 	"     --yes             Set default answer to yes\n"
     27 	" -q, --quiet           Do not print informal notifications\n"
     28 	" -h, --help            Show this help\n"
     29 	" -v, --version         Show versioning information\n"
     30 	"\n"
     31 	"Neighbour Options\n"
     32 	" -a, --addr=ADDR       Destination address of neighbour\n"
     33 	" -l, --lladdr=ADDR     Link layer address of neighbour\n"
     34 	" -d, --dev=DEV         Device the neighbour is connected to\n"
     35 	"     --family=FAMILY   Destination address family\n"
     36 	"     --state=STATE     Neighbour state, (default = permanent)\n"
     37 	);
     38 
     39 	exit(0);
     40 }
     41 
     42 static void delete_cb(struct nl_object *obj, void *arg)
     43 {
     44 	struct rtnl_neigh *neigh = nl_object_priv(obj);
     45 	struct nl_dump_params params = {
     46 		.dp_type = NL_DUMP_LINE,
     47 		.dp_fd = stdout,
     48 	};
     49 	int err;
     50 
     51 	if (interactive && !nl_cli_confirm(obj, &params, default_yes))
     52 		return;
     53 
     54 	if ((err = rtnl_neigh_delete(sock, neigh, 0)) < 0)
     55 		nl_cli_fatal(err, "Unable to delete neighbour: %s\n",
     56 			     nl_geterror(err));
     57 
     58 	if (!quiet) {
     59 		printf("Deleted ");
     60 		nl_object_dump(obj, &params);
     61 	}
     62 
     63 	deleted++;
     64 }
     65 
     66 int main(int argc, char *argv[])
     67 {
     68 	struct rtnl_neigh *neigh;
     69 	struct nl_cache *link_cache, *neigh_cache;
     70 
     71 	sock = nl_cli_alloc_socket();
     72 	nl_cli_connect(sock, NETLINK_ROUTE);
     73 	link_cache = nl_cli_link_alloc_cache(sock);
     74 	neigh_cache = nl_cli_neigh_alloc_cache(sock);
     75  	neigh = nl_cli_neigh_alloc();
     76 
     77 	for (;;) {
     78 		int c, optidx = 0;
     79 		enum {
     80 			ARG_FAMILY = 257,
     81 			ARG_STATE = 258,
     82 			ARG_YES,
     83 		};
     84 		static struct option long_opts[] = {
     85 			{ "interactive", 0, 0, 'i' },
     86 			{ "yes", 0, 0, ARG_YES },
     87 			{ "quiet", 0, 0, 'q' },
     88 			{ "help", 0, 0, 'h' },
     89 			{ "version", 0, 0, 'v' },
     90 			{ "addr", 1, 0, 'a' },
     91 			{ "lladdr", 1, 0, 'l' },
     92 			{ "dev", 1, 0, 'd' },
     93 			{ "family", 1, 0, ARG_FAMILY },
     94 			{ "state", 1, 0, ARG_STATE },
     95 			{ 0, 0, 0, 0 }
     96 		};
     97 
     98 		c = getopt_long(argc, argv, "qhva:l:d:", long_opts, &optidx);
     99 		if (c == -1)
    100 			break;
    101 
    102 		switch (c) {
    103 		case 'i': interactive = 1; break;
    104 		case ARG_YES: default_yes = 1; break;
    105 		case 'q': quiet = 1; break;
    106 		case 'h': print_usage(); break;
    107 		case 'v': nl_cli_print_version(); break;
    108 		case 'a': nl_cli_neigh_parse_dst(neigh, optarg); break;
    109 		case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
    110 		case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
    111 		case ARG_FAMILY: nl_cli_neigh_parse_family(neigh, optarg); break;
    112 		case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
    113 		}
    114  	}
    115 
    116 	nl_cache_foreach_filter(neigh_cache, OBJ_CAST(neigh), delete_cb, NULL);
    117 
    118 	if (!quiet)
    119 		printf("Deleted %d neighbours\n", deleted);
    120 
    121 	return 0;
    122 }
    123