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) 2003-2010 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 " --ifalias=NAME alias name (SNMP IfAlias)\n" 45 " --state=up/down set interface up/down\n" 46 ); 47 exit(0); 48 } 49 50 static void set_cb(struct nl_object *obj, void *arg) 51 { 52 struct rtnl_link *link = nl_object_priv(obj); 53 struct rtnl_link *change = arg; 54 struct nl_dump_params params = { 55 .dp_type = NL_DUMP_LINE, 56 .dp_fd = stdout, 57 }; 58 int err; 59 60 if ((err = rtnl_link_change(sock, link, change, 0)) < 0) 61 nl_cli_fatal(err, "Unable to change link: %s", 62 nl_geterror(err)); 63 64 if (!quiet) { 65 printf("Changed "); 66 nl_object_dump(OBJ_CAST(link), ¶ms); 67 } 68 } 69 70 int main(int argc, char *argv[]) 71 { 72 struct nl_cache *link_cache; 73 struct rtnl_link *link, *change; 74 int ok = 0; 75 76 sock = nl_cli_alloc_socket(); 77 nl_cli_connect(sock, NETLINK_ROUTE); 78 link_cache = nl_cli_link_alloc_cache(sock); 79 link = nl_cli_link_alloc(); 80 change = nl_cli_link_alloc(); 81 82 for (;;) { 83 int c, optidx = 0; 84 enum { 85 ARG_RENAME = 257, 86 ARG_MTU = 258, 87 ARG_TXQLEN, 88 ARG_WEIGHT, 89 ARG_IFALIAS, 90 ARG_STATE, 91 }; 92 static struct option long_opts[] = { 93 { "quiet", 0, 0, 'q' }, 94 { "help", 0, 0, 'h' }, 95 { "version", 0, 0, 'v' }, 96 { "name", 1, 0, 'n' }, 97 { "index", 1, 0, 'i' }, 98 { "rename", 1, 0, ARG_RENAME }, 99 { "mtu", 1, 0, ARG_MTU }, 100 { "txqlen", 1, 0, ARG_TXQLEN }, 101 { "weight", 1, 0, ARG_WEIGHT }, 102 { "ifalias", 1, 0, ARG_IFALIAS }, 103 { "state", 1, 0, ARG_STATE }, 104 { 0, 0, 0, 0 } 105 }; 106 107 c = getopt_long(argc, argv, "qhvn:i:", long_opts, &optidx); 108 if (c == -1) 109 break; 110 111 switch (c) { 112 case 'q': quiet = 1; break; 113 case 'h': print_usage(); break; 114 case 'v': nl_cli_print_version(); break; 115 case 'n': ok++; nl_cli_link_parse_name(link, optarg); break; 116 case 'i': ok++; nl_cli_link_parse_ifindex(link, optarg); break; 117 case ARG_RENAME: nl_cli_link_parse_name(change, optarg); break; 118 case ARG_MTU: nl_cli_link_parse_mtu(change, optarg); break; 119 case ARG_TXQLEN: nl_cli_link_parse_txqlen(change, optarg); break; 120 case ARG_WEIGHT: nl_cli_link_parse_weight(change, optarg); break; 121 case ARG_IFALIAS: nl_cli_link_parse_ifalias(change, optarg); break; 122 case ARG_STATE: 123 if(!strcmp(optarg, "up")) 124 rtnl_link_set_flags(change, IFF_UP); 125 else if(!strcmp(optarg, "down")) 126 rtnl_link_unset_flags(change, IFF_UP); 127 break; 128 } 129 } 130 131 if (!ok) 132 print_usage(); 133 134 nl_cache_foreach_filter(link_cache, OBJ_CAST(link), set_cb, change); 135 136 return 0; 137 } 138
