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@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
print_usage(void)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
set_cb(struct nl_object * obj,void * arg)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
main(int argc,char * argv[])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