1 /* 2 * src/nl-link-set.c Set 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) 2003-2009 Thomas Graf <tgraf (at) suug.ch> 10 */ 11 12 #include <netlink/cli/utils.h> 13 #include <netlink/cli/link.h> 14 15 static struct nl_sock *sock; 16 static int quiet = 0; 17 18 #if 0 19 " changes := [link LINK]\n" 20 " [master MASTER] [qdisc QDISC] [addr ADDR] [broadcast BRD]\n" 21 " [{ up | down }] [{ arp | noarp }] [{ promisc | nopromisc }]\n" 22 " [{ dynamic | nodynamic }] [{ multicast | nomulticast }]\n" 23 " [{ trailers | notrailers }] [{ allmulticast | noallmulticast }]\n"); 24 #endif 25 26 static void print_usage(void) 27 { 28 printf( 29 "Usage: nl-link-set [OPTION]... [LINK]\n" 30 "\n" 31 "Options\n" 32 " -q, --quiet Do not print informal notifications\n" 33 " -h, --help Show this help\n" 34 " -v, --version Show versioning information\n" 35 "\n" 36 "Selecting the Link\n" 37 " -n, --name=NAME link name\n" 38 " -i, --index interface index\n" 39 "Change Options\n" 40 " --rename=NAME rename interface\n" 41 " --mtu=NUM MTU value\n" 42 " --txqlen=NUM TX queue length\n" 43 " --weight=NUM weight\n" 44 ); 45 exit(0); 46 } 47 48 static void set_cb(struct nl_object *obj, void *arg) 49 { 50 struct rtnl_link *link = nl_object_priv(obj); 51 struct rtnl_link *change = arg; 52 struct nl_dump_params params = { 53 .dp_type = NL_DUMP_LINE, 54 .dp_fd = stdout, 55 }; 56 int err; 57 58 if ((err = rtnl_link_change(sock, link, change, 0) < 0)) 59 nl_cli_fatal(err, "Unable to change link: %s", 60 nl_geterror(err)); 61 62 if (!quiet) { 63 printf("Changed "); 64 nl_object_dump(OBJ_CAST(link), ¶ms); 65 } 66 } 67 68 int main(int argc, char *argv[]) 69 { 70 struct nl_cache *link_cache; 71 struct rtnl_link *link, *change; 72 int ok = 0; 73 74 sock = nl_cli_alloc_socket(); 75 nl_cli_connect(sock, NETLINK_ROUTE); 76 link_cache = nl_cli_link_alloc_cache(sock); 77 link = nl_cli_link_alloc(); 78 change = nl_cli_link_alloc(); 79 80 for (;;) { 81 int c, optidx = 0; 82 enum { 83 ARG_RENAME = 257, 84 ARG_MTU = 258, 85 ARG_TXQLEN, 86 ARG_WEIGHT, 87 }; 88 static struct option long_opts[] = { 89 { "quiet", 0, 0, 'q' }, 90 { "help", 0, 0, 'h' }, 91 { "version", 0, 0, 'v' }, 92 { "name", 1, 0, 'n' }, 93 { "index", 1, 0, 'i' }, 94 { "rename", 1, 0, ARG_RENAME }, 95 { "mtu", 1, 0, ARG_MTU }, 96 { "txqlen", 1, 0, ARG_TXQLEN }, 97 { "weight", 1, 0, ARG_WEIGHT }, 98 { 0, 0, 0, 0 } 99 }; 100 101 c = getopt_long(argc, argv, "qhvn:i:", long_opts, &optidx); 102 if (c == -1) 103 break; 104 105 switch (c) { 106 case 'q': quiet = 1; break; 107 case 'h': print_usage(); break; 108 case 'v': nl_cli_print_version(); break; 109 case 'n': ok++; nl_cli_link_parse_name(link, optarg); break; 110 case 'i': ok++; nl_cli_link_parse_ifindex(link, optarg); break; 111 case ARG_RENAME: nl_cli_link_parse_name(change, optarg); break; 112 case ARG_MTU: nl_cli_link_parse_mtu(link, optarg); break; 113 case ARG_TXQLEN: nl_cli_link_parse_txqlen(link, optarg); break; 114 case ARG_WEIGHT: nl_cli_link_parse_weight(link, optarg); break; 115 } 116 } 117 118 if (!ok) 119 print_usage(); 120 121 nl_cache_foreach_filter(link_cache, OBJ_CAST(link), set_cb, change); 122 123 return 0; 124 } 125