1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <netinet/ether.h>
#include "sd-rtnl.h"
#include "rtnl-util.h"
int rtnl_set_link_properties(sd_rtnl *rtnl, int ifindex, const char *name, const struct ether_addr *mac, unsigned mtu) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message;
bool need_update = false;
int r;
assert(rtnl);
assert(ifindex > 0);
r = sd_rtnl_message_link_new(RTM_NEWLINK, ifindex, 0, 0, &message);
if (r < 0)
return r;
if (name) {
r = sd_rtnl_message_append(message, IFLA_IFNAME, name);
if (r < 0)
return r;
need_update = true;
}
if (mac) {
r = sd_rtnl_message_append(message, IFLA_ADDRESS, mac);
if (r < 0)
return r;
need_update = true;
}
if (mtu > 0) {
r = sd_rtnl_message_append(message, IFLA_MTU, &mtu);
if (r < 0)
return r;
need_update = true;
}
if (need_update) {
r = sd_rtnl_send_with_reply_and_block(rtnl, message, 0, NULL);
if (r < 0)
return r;
}
return 0;
}
|
