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      1 /*
      2  * src/ nl-neigh-add.c     Add 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;
     17 
     18 static void print_usage(void)
     19 {
     20 	printf(
     21 	"Usage: nl-neigh-add [OPTION]... NEIGHBOUR\n"
     22 	"\n"
     23 	"Options\n"
     24 	"     --update-only     Do not create neighbour, updates exclusively\n"
     25 	"     --create-only     Do not update neighbour if it exists already.\n"
     26 	" -q, --quiet           Do not print informal notifications\n"
     27 	" -h, --help            Show this help\n"
     28 	" -v, --version         Show versioning information\n"
     29 	"\n"
     30 	"Neighbour Options\n"
     31 	" -a, --addr=ADDR       Destination address of neighbour\n"
     32 	" -l, --lladdr=ADDR     Link layer address of neighbour\n"
     33 	" -d, --dev=DEV         Device the neighbour is connected to\n"
     34 	"     --state=STATE     Neighbour state, (default = permanent)\n"
     35 	"\n"
     36 	"Example\n"
     37 	"  nl-neigh-add --create-only --addr=10.0.0.1 --dev=eth0 \\\n"
     38 	"               --lladdr=AA:BB:CC:DD:EE:FF\n"
     39 	);
     40 
     41 	exit(0);
     42 }
     43 
     44 int main(int argc, char *argv[])
     45 {
     46 	struct nl_sock *sock;
     47 	struct rtnl_neigh *neigh;
     48 	struct nl_cache *link_cache;
     49 	struct nl_dump_params dp = {
     50 		.dp_type = NL_DUMP_LINE,
     51 		.dp_fd = stdout,
     52 	};
     53 	int err, ok = 0, nlflags = NLM_F_REPLACE | NLM_F_CREATE;
     54 
     55 	sock = nl_cli_alloc_socket();
     56 	nl_cli_connect(sock, NETLINK_ROUTE);
     57 	link_cache = nl_cli_link_alloc_cache(sock);
     58  	neigh = nl_cli_neigh_alloc();
     59 
     60 	for (;;) {
     61 		int c, optidx = 0;
     62 		enum {
     63 			ARG_UPDATE_ONLY = 257,
     64 			ARG_CREATE_ONLY = 258,
     65 			ARG_STATE,
     66 		};
     67 		static struct option long_opts[] = {
     68 			{ "update-only", 0, 0, ARG_UPDATE_ONLY },
     69 			{ "create-only", 0, 0, ARG_CREATE_ONLY },
     70 			{ "quiet", 0, 0, 'q' },
     71 			{ "help", 0, 0, 'h' },
     72 			{ "version", 0, 0, 'v' },
     73 			{ "addr", 1, 0, 'a' },
     74 			{ "lladdr", 1, 0, 'l' },
     75 			{ "dev", 1, 0, 'd' },
     76 			{ "state", 1, 0, ARG_STATE },
     77 			{ 0, 0, 0, 0 }
     78 		};
     79 
     80 		c = getopt_long(argc, argv, "qhva:l:d:", long_opts, &optidx);
     81 		if (c == -1)
     82 			break;
     83 
     84 		switch (c) {
     85 		case ARG_UPDATE_ONLY: nlflags &= ~NLM_F_CREATE; break;
     86 		case ARG_CREATE_ONLY: nlflags |= NLM_F_EXCL; break;
     87 		case 'q': quiet = 1; break;
     88 		case 'h': print_usage(); break;
     89 		case 'v': nl_cli_print_version(); break;
     90 		case 'a': ok++; nl_cli_neigh_parse_dst(neigh, optarg); break;
     91 		case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
     92 		case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
     93 		case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
     94 		}
     95  	}
     96 
     97 	if (!ok)
     98 		print_usage();
     99 
    100 	if ((err = rtnl_neigh_add(sock, neigh, nlflags)) < 0)
    101 		nl_cli_fatal(err, "Unable to add neighbour: %s",
    102 			     nl_geterror(err));
    103 
    104 	if (!quiet) {
    105 		printf("Added ");
    106 		nl_object_dump(OBJ_CAST(neigh), &dp);
    107  	}
    108 
    109 	return 0;
    110 }
    111