device: Don't process link events anymore in device user specific callback handlers
[project/netifd.git] / interface.h
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 #ifndef __NETIFD_INTERFACE_H
15 #define __NETIFD_INTERFACE_H
16
17 #include "device.h"
18 #include "config.h"
19
20 struct interface;
21 struct interface_proto_state;
22
23 enum interface_event {
24 IFEV_DOWN,
25 IFEV_UP,
26 IFEV_UPDATE,
27 IFEV_FREE,
28 IFEV_RELOAD,
29 };
30
31 enum interface_state {
32 IFS_SETUP,
33 IFS_UP,
34 IFS_TEARDOWN,
35 IFS_DOWN,
36 };
37
38 enum interface_config_state {
39 IFC_NORMAL,
40 IFC_RELOAD,
41 IFC_REMOVE
42 };
43
44 enum interface_id_selection_type {
45 IFID_FIXED,
46 IFID_RANDOM,
47 IFID_EUI64
48 };
49
50 enum interface_update_flags {
51 IUF_ADDRESS = (1 << 0),
52 IUF_ROUTE = (1 << 1),
53 IUF_PREFIX = (1 << 2),
54 IUF_DATA = (1 << 3),
55 };
56
57 struct interface_error {
58 struct list_head list;
59
60 const char *subsystem;
61 const char *code;
62 const char *data[];
63 };
64
65 struct interface_user {
66 struct list_head list;
67 struct interface *iface;
68 void (*cb)(struct interface_user *dep, struct interface *iface, enum interface_event ev);
69 };
70
71 struct interface_ip_settings {
72 struct interface *iface;
73 bool enabled;
74 bool no_defaultroute;
75 bool no_dns;
76 bool no_delegation;
77
78 struct vlist_tree addr;
79 struct vlist_tree route;
80 struct vlist_tree prefix;
81
82 struct vlist_simple_tree dns_servers;
83 struct vlist_simple_tree dns_search;
84 };
85
86 struct interface_data {
87 struct avl_node node;
88 struct blob_attr data[];
89 };
90
91 struct interface_assignment_class {
92 struct list_head head;
93 char name[];
94 };
95
96 /*
97 * interface configuration
98 */
99 struct interface {
100 struct vlist_node node;
101 struct list_head hotplug_list;
102 enum interface_event hotplug_ev;
103
104 const char *name;
105 const char *ifname;
106
107 bool available;
108 bool autostart;
109 bool config_autostart;
110 bool device_config;
111 bool enabled;
112 bool link_state;
113 bool force_link;
114 bool dynamic;
115
116 time_t start_time;
117 enum interface_state state;
118 enum interface_config_state config_state;
119 enum interface_update_flags updated;
120
121 struct list_head users;
122
123 /* for alias interface */
124 const char *parent_ifname;
125 struct interface_user parent_iface;
126
127 /* main interface that the interface is bound to */
128 struct device_user main_dev;
129 struct device_user ext_dev;
130
131 /* interface that layer 3 communication will go through */
132 struct device_user l3_dev;
133
134 struct blob_attr *config;
135
136 /* primary protocol state */
137 const struct proto_handler *proto_handler;
138 struct interface_proto_state *proto;
139
140 struct interface_ip_settings proto_ip;
141 struct interface_ip_settings config_ip;
142 struct vlist_tree host_routes;
143
144 int metric;
145 unsigned int ip4table;
146 unsigned int ip6table;
147
148 /* IPv6 assignment parameters */
149 enum interface_id_selection_type assignment_iface_id_selection;
150 struct in6_addr assignment_fixed_iface_id;
151 uint8_t assignment_length;
152 int32_t assignment_hint;
153 struct list_head assignment_classes;
154
155 /* errors/warnings while trying to bring up the interface */
156 struct list_head errors;
157
158 /* extra data provided by protocol handlers or modules */
159 struct avl_tree data;
160
161 struct uloop_timeout remove_timer;
162 struct ubus_object ubus;
163 };
164
165
166 extern struct vlist_tree interfaces;
167 extern const struct uci_blob_param_list interface_attr_list;
168
169 struct interface *interface_alloc(const char *name, struct blob_attr *config);
170
171 void interface_set_dynamic(struct interface *iface);
172
173 void interface_add(struct interface *iface, struct blob_attr *config);
174 bool interface_add_alias(struct interface *iface, struct blob_attr *config);
175
176 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state);
177
178 void interface_set_available(struct interface *iface, bool new_state);
179 int interface_set_up(struct interface *iface);
180 int interface_set_down(struct interface *iface);
181 void __interface_set_down(struct interface *iface, bool force);
182
183 void interface_set_main_dev(struct interface *iface, struct device *dev);
184 void interface_set_l3_dev(struct interface *iface, struct device *dev);
185
186 void interface_add_user(struct interface_user *dep, struct interface *iface);
187 void interface_remove_user(struct interface_user *dep);
188
189 int interface_remove_link(struct interface *iface, struct device *dev);
190 int interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext);
191
192 void interface_add_error(struct interface *iface, const char *subsystem,
193 const char *code, const char **data, int n_data);
194
195 int interface_add_data(struct interface *iface, const struct blob_attr *data);
196
197 void interface_update_start(struct interface *iface);
198 void interface_update_complete(struct interface *iface);
199
200 void interface_start_pending(void);
201
202 #endif