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/* SPDX-License-Identifier: LGPL-2.1-only */
/*
* Copyright (c) 2003-2010 Thomas Graf <tgraf@suug.ch>
*/
#include <netlink/cli/utils.h>
#include <netlink/cli/link.h>
#include <linux/if.h>
#include <linux/netlink.h>
static struct nl_sock *sock;
static int quiet = 0;
#if 0
" changes := [link LINK]\n"
" [master MASTER] [qdisc QDISC] [addr ADDR] [broadcast BRD]\n"
" [{ up | down }] [{ arp | noarp }] [{ promisc | nopromisc }]\n"
" [{ dynamic | nodynamic }] [{ multicast | nomulticast }]\n"
" [{ trailers | notrailers }] [{ allmulticast | noallmulticast }]\n");
#endif
static void print_usage(void)
{
printf(
"Usage: nl-link-set [OPTION]... [LINK]\n"
"\n"
"Options\n"
" -q, --quiet Do not print informal notifications\n"
" -h, --help Show this help\n"
" -v, --version Show versioning information\n"
"\n"
"Selecting the Link\n"
" -n, --name=NAME link name\n"
" -i, --index interface index\n"
"Change Options\n"
" --rename=NAME rename interface\n"
" --mtu=NUM MTU value\n"
" --txqlen=NUM TX queue length\n"
" --weight=NUM weight\n"
" --ifalias=NAME alias name (SNMP IfAlias)\n"
" --state=up/down set interface up/down\n"
);
exit(0);
}
static void set_cb(struct nl_object *obj, void *arg)
{
struct rtnl_link *link = nl_object_priv(obj);
struct rtnl_link *change = arg;
struct nl_dump_params params = {
.dp_type = NL_DUMP_LINE,
.dp_fd = stdout,
};
int err;
if ((err = rtnl_link_change(sock, link, change, 0)) < 0)
nl_cli_fatal(err, "Unable to change link: %s",
nl_geterror(err));
if (!quiet) {
printf("Changed ");
nl_object_dump(OBJ_CAST(link), ¶ms);
}
}
int main(int argc, char *argv[])
{
struct nl_cache *link_cache;
struct rtnl_link *link, *change;
int ok = 0;
sock = nl_cli_alloc_socket();
nl_cli_connect(sock, NETLINK_ROUTE);
link_cache = nl_cli_link_alloc_cache(sock);
link = nl_cli_link_alloc();
change = nl_cli_link_alloc();
for (;;) {
int c, optidx = 0;
enum {
ARG_RENAME = 257,
ARG_MTU = 258,
ARG_TXQLEN,
ARG_WEIGHT,
ARG_IFALIAS,
ARG_STATE,
};
static struct option long_opts[] = {
{ "quiet", 0, 0, 'q' },
{ "help", 0, 0, 'h' },
{ "version", 0, 0, 'v' },
{ "name", 1, 0, 'n' },
{ "index", 1, 0, 'i' },
{ "rename", 1, 0, ARG_RENAME },
{ "mtu", 1, 0, ARG_MTU },
{ "txqlen", 1, 0, ARG_TXQLEN },
{ "weight", 1, 0, ARG_WEIGHT },
{ "ifalias", 1, 0, ARG_IFALIAS },
{ "state", 1, 0, ARG_STATE },
{ 0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "qhvn:i:", long_opts, &optidx);
if (c == -1)
break;
switch (c) {
case 'q': quiet = 1; break;
case 'h': print_usage(); break;
case 'v': nl_cli_print_version(); break;
case 'n': ok++; nl_cli_link_parse_name(link, optarg); break;
case 'i': ok++; nl_cli_link_parse_ifindex(link, optarg); break;
case ARG_RENAME: nl_cli_link_parse_name(change, optarg); break;
case ARG_MTU: nl_cli_link_parse_mtu(change, optarg); break;
case ARG_TXQLEN: nl_cli_link_parse_txqlen(change, optarg); break;
case ARG_WEIGHT: nl_cli_link_parse_weight(change, optarg); break;
case ARG_IFALIAS: nl_cli_link_parse_ifalias(change, optarg); break;
case ARG_STATE:
if(!strcmp(optarg, "up"))
rtnl_link_set_flags(change, IFF_UP);
else if(!strcmp(optarg, "down"))
rtnl_link_unset_flags(change, IFF_UP);
break;
}
}
if (!ok)
print_usage();
nl_cache_foreach_filter(link_cache, OBJ_CAST(link), set_cb, change);
return 0;
}
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