wireless: make reconf opt-in and allow serializing configuration
[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_UP_FAILED,
27 IFEV_UPDATE,
28 IFEV_FREE,
29 IFEV_RELOAD,
30 IFEV_LINK_UP,
31 /* send when a new interface created. This is before proto handlers has been attached. */
32 IFEV_CREATE,
33 };
34
35 enum interface_state {
36 IFS_SETUP,
37 IFS_UP,
38 IFS_TEARDOWN,
39 IFS_DOWN,
40 };
41
42 enum interface_config_state {
43 IFC_NORMAL,
44 IFC_RELOAD,
45 IFC_REMOVE
46 };
47
48 enum interface_id_selection_type {
49 IFID_FIXED,
50 IFID_RANDOM,
51 IFID_EUI64
52 };
53
54 enum interface_update_flags {
55 IUF_ADDRESS = (1 << 0),
56 IUF_ROUTE = (1 << 1),
57 IUF_PREFIX = (1 << 2),
58 IUF_DATA = (1 << 3),
59 };
60
61 struct interface_error {
62 struct list_head list;
63
64 const char *subsystem;
65 const char *code;
66 const char *data[];
67 };
68
69 struct interface_user {
70 struct list_head list;
71 struct interface *iface;
72 void (*cb)(struct interface_user *dep, struct interface *iface, enum interface_event ev);
73 };
74
75 struct interface_ip_settings {
76 struct interface *iface;
77 bool enabled;
78 bool no_defaultroute;
79 bool no_dns;
80 bool no_delegation;
81
82 struct vlist_tree addr;
83 struct vlist_tree route;
84 struct vlist_tree prefix;
85 struct vlist_tree neighbor;
86
87 struct vlist_simple_tree dns_servers;
88 struct vlist_simple_tree dns_search;
89 };
90
91 struct interface_data {
92 struct avl_node node;
93 struct blob_attr data[];
94 };
95
96 struct interface_assignment_class {
97 struct list_head head;
98 char name[];
99 };
100
101 /*
102 * interface configuration
103 */
104 struct interface {
105 struct vlist_node node;
106 struct list_head hotplug_list;
107 enum interface_event hotplug_ev;
108
109 const char *name;
110 const char *ifname;
111
112 bool available;
113 bool autostart;
114 bool config_autostart;
115 bool device_config;
116 bool enabled;
117 bool link_state;
118 bool force_link;
119 bool dynamic;
120 bool policy_rules_set;
121 bool link_up_event;
122
123 time_t start_time;
124 enum interface_state state;
125 enum interface_config_state config_state;
126 enum interface_update_flags updated;
127
128 struct list_head users;
129
130 /* for alias interface */
131 const char *parent_ifname;
132 struct interface_user parent_iface;
133
134 /* main interface that the interface is bound to */
135 struct device_user main_dev;
136 struct device_user ext_dev;
137
138 /* interface that layer 3 communication will go through */
139 struct device_user l3_dev;
140
141 struct blob_attr *config;
142
143 /* primary protocol state */
144 const struct proto_handler *proto_handler;
145 struct interface_proto_state *proto;
146
147 struct interface_ip_settings proto_ip;
148 struct interface_ip_settings config_ip;
149 struct vlist_tree host_routes;
150 struct vlist_tree host_neighbors;
151
152 int metric;
153 int dns_metric;
154 unsigned int ip4table;
155 unsigned int ip6table;
156
157 /* IPv6 assignment parameters */
158 enum interface_id_selection_type assignment_iface_id_selection;
159 struct in6_addr assignment_fixed_iface_id;
160 uint8_t assignment_length;
161 int32_t assignment_hint;
162 struct list_head assignment_classes;
163 int assignment_weight;
164
165 /* errors/warnings while trying to bring up the interface */
166 struct list_head errors;
167
168 /* extra data provided by protocol handlers or modules */
169 struct avl_tree data;
170
171 struct uloop_timeout remove_timer;
172 struct ubus_object ubus;
173 };
174
175
176 extern struct vlist_tree interfaces;
177 extern const struct uci_blob_param_list interface_attr_list;
178
179 struct interface *interface_alloc(const char *name, struct blob_attr *config, bool dynamic);
180
181 bool interface_add(struct interface *iface, struct blob_attr *config);
182 bool interface_add_alias(struct interface *iface, struct blob_attr *config);
183
184 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state);
185
186 void interface_set_available(struct interface *iface, bool new_state);
187 void interface_set_up(struct interface *iface);
188 void interface_set_down(struct interface *iface);
189 int interface_renew(struct interface *iface);
190
191 void interface_set_l3_dev(struct interface *iface, struct device *dev);
192
193 void interface_add_user(struct interface_user *dep, struct interface *iface);
194 void interface_remove_user(struct interface_user *dep);
195
196 int interface_handle_link(struct interface *iface, const char *name, bool add, bool link_ext);
197
198 void interface_add_error(struct interface *iface, const char *subsystem,
199 const char *code, const char **data, int n_data);
200
201 int interface_add_data(struct interface *iface, const struct blob_attr *data);
202 int interface_parse_data(struct interface *iface, const struct blob_attr *attr);
203
204 void interface_update_start(struct interface *iface, const bool keep_old);
205 void interface_update_complete(struct interface *iface);
206
207 void interface_start_pending(void);
208
209 #endif