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      1 /*
      2  * src/nl-link-dump.c	Dump link attributes
      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) 2003-2010 Thomas Graf <tgraf (at) suug.ch>
     10  */
     11 
     12 #include <netlink/cli/utils.h>
     13 #include <netlink/cli/link.h>
     14 
     15 static void print_usage(void)
     16 {
     17 	printf(
     18 "Usage: nl-link-list [OPTIONS]... \n"
     19 "\n"
     20 "OPTIONS\n"
     21 "     --details             Show detailed information of each link\n"
     22 "     --stats               Show statistics, implies --details\n"
     23 " -h, --help                Show this help text.\n"
     24 " -v, --version             Show versioning information.\n"
     25 "\n"
     26 " -n, --name=NAME	    Name of link\n"
     27 " -i, --index               Interface index (unique identifier)\n"
     28 "     --family=NAME         Link address family\n"
     29 "     --mtu=NUM             MTU value\n"
     30 "     --txqlen=NUM          TX queue length\n"
     31 "     --weight=NUM          Weight\n"
     32 	);
     33 	exit(0);
     34 }
     35 
     36 int main(int argc, char *argv[])
     37 {
     38 	struct nl_sock *sock;
     39 	struct nl_cache *link_cache;
     40 	struct rtnl_link *link;
     41 	struct nl_dump_params params = {
     42 		.dp_type = NL_DUMP_LINE,
     43 		.dp_fd = stdout,
     44 	};
     45 
     46 	sock = nl_cli_alloc_socket();
     47 	nl_cli_connect(sock, NETLINK_ROUTE);
     48 	link = nl_cli_link_alloc();
     49 
     50 	for (;;) {
     51 		int c, optidx = 0;
     52 		enum {
     53 			ARG_FAMILY = 257,
     54 			ARG_MTU = 258,
     55 			ARG_TXQLEN,
     56 			ARG_WEIGHT,
     57 			ARG_DETAILS,
     58 			ARG_STATS,
     59 		};
     60 		static struct option long_opts[] = {
     61 			{ "details", 0, 0, ARG_DETAILS },
     62 			{ "stats", 0, 0, ARG_STATS },
     63 			{ "help", 0, 0, 'h' },
     64 			{ "version", 0, 0, 'v' },
     65 			{ "name", 1, 0, 'n' },
     66 			{ "index", 1, 0, 'i' },
     67 			{ "family", 1, 0, ARG_FAMILY },
     68 			{ "mtu", 1, 0, ARG_MTU },
     69 			{ "txqlen", 1, 0, ARG_TXQLEN },
     70 			{ "weight", 1, 0, ARG_WEIGHT },
     71 			{ 0, 0, 0, 0 }
     72 		};
     73 
     74 		c = getopt_long(argc, argv, "hvn:i:", long_opts, &optidx);
     75 		if (c == -1)
     76 			break;
     77 
     78 		switch (c) {
     79 		case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
     80 		case ARG_STATS: params.dp_type = NL_DUMP_STATS; break;
     81 		case 'h': print_usage(); break;
     82 		case 'v': nl_cli_print_version(); break;
     83 		case 'n': nl_cli_link_parse_name(link, optarg); break;
     84 		case 'i': nl_cli_link_parse_ifindex(link, optarg); break;
     85 		case ARG_FAMILY: nl_cli_link_parse_family(link, optarg); break;
     86 		case ARG_MTU: nl_cli_link_parse_mtu(link, optarg); break;
     87 		case ARG_TXQLEN: nl_cli_link_parse_txqlen(link, optarg); break;
     88 		case ARG_WEIGHT: nl_cli_link_parse_weight(link, optarg); break;
     89 		}
     90 	}
     91 
     92 	link_cache = nl_cli_link_alloc_cache_family(sock,
     93 				rtnl_link_get_family(link));
     94 
     95 	nl_cache_dump_filter(link_cache, &params, OBJ_CAST(link));
     96 
     97 	return 0;
     98 }
     99