device: Don't process link events anymore in device user specific callback handlers
[project/netifd.git] / tunnel.c
1 /*
2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14 #include "netifd.h"
15 #include "device.h"
16 #include "config.h"
17 #include "system.h"
18
19 struct tunnel {
20 struct device dev;
21 device_state_cb set_state;
22 };
23
24 static int
25 tunnel_set_state(struct device *dev, bool up)
26 {
27 struct tunnel *tun = container_of(dev, struct tunnel, dev);
28 int ret;
29
30 if (up) {
31 ret = system_add_ip_tunnel(dev->ifname, dev->config);
32 if (ret != 0)
33 return ret;
34 }
35
36 ret = tun->set_state(dev, up);
37 if (ret || !up)
38 system_del_ip_tunnel(dev->ifname, dev->config);
39
40 return ret;
41 }
42
43 static enum dev_change_type
44 tunnel_reload(struct device *dev, struct blob_attr *attr)
45 {
46 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
47 const struct uci_blob_param_list *cfg = dev->type->config_params;
48
49 if (uci_blob_check_equal(dev->config, attr, cfg))
50 return DEV_CONFIG_NO_CHANGE;
51
52 if (attr) {
53 memset(tb_dev, 0, sizeof(tb_dev));
54
55 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
56 blob_data(attr), blob_len(attr));
57 }
58
59 device_init_settings(dev, tb_dev);
60
61 return DEV_CONFIG_RESTART;
62 }
63
64 static struct device *
65 tunnel_create(const char *name, struct blob_attr *attr)
66 {
67 struct tunnel *tun;
68 struct device *dev;
69
70 tun = calloc(1, sizeof(*tun));
71 dev = &tun->dev;
72 device_init(dev, &tunnel_device_type, name);
73 tun->set_state = dev->set_state;
74 dev->set_state = tunnel_set_state;
75 device_apply_config(dev, &tunnel_device_type, attr);
76 device_set_present(dev, true);
77
78 return dev;
79 }
80
81 static void
82 tunnel_free(struct device *dev)
83 {
84 struct tunnel *tun = container_of(dev, struct tunnel, dev);
85
86 free(tun);
87 }
88
89 const struct device_type tunnel_device_type = {
90 .name = "IP tunnel",
91 .config_params = &tunnel_attr_list,
92 .reload = tunnel_reload,
93 .create = tunnel_create,
94 .free = tunnel_free,
95 };
96
97