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 struct interface_error {
  45         struct list_head list;
  46
  47         const char *subsystem;
  48         const char *code;
  49         const char *data[];
  50 };
  51
  52 struct interface_user {
  53         struct list_head list;
  54         struct interface *iface;
  55         void (*cb)(struct interface_user *dep, struct interface *iface, enum interface_event ev);
  56 };
  57
  58 struct interface_ip_settings {
  59         struct interface *iface;
  60         bool enabled;
  61         bool no_defaultroute;
  62         bool no_dns;
  63         bool no_delegation;
  64
  65         struct vlist_tree addr;
  66         struct vlist_tree route;
  67         struct vlist_tree prefix;
  68
  69         struct vlist_simple_tree dns_servers;
  70         struct vlist_simple_tree dns_search;
  71 };
  72
  73 struct interface_data {
  74         struct avl_node node;
  75         struct blob_attr data[];
  76 };
  77
  78 struct interface_assignment_class {
  79         struct list_head head;
  80         char name[];
  81 };
  82
  83 /*
  84  * interface configuration
  85  */
  86 struct interface {
  87         struct vlist_node node;
  88         struct list_head hotplug_list;
  89         enum interface_event hotplug_ev;
  90
  91         const char *name;
  92         const char *ifname;
  93
  94         bool available;
  95         bool autostart;
  96         bool config_autostart;
  97         bool device_config;
  98         bool dynamic;
  99
 100         time_t start_time;
 101         enum interface_state state;
 102         enum interface_config_state config_state;
 103
 104         struct list_head users;
 105
 106         const char *parent_ifname;
 107         struct interface_user parent_iface;
 108
 109         /* main interface that the interface is bound to */
 110         struct device_user main_dev;
 111
 112         /* interface that layer 3 communication will go through */
 113         struct device_user l3_dev;
 114
 115         struct blob_attr *config;
 116
 117         /* primary protocol state */
 118         const struct proto_handler *proto_handler;
 119         struct interface_proto_state *proto;
 120
 121         struct interface_ip_settings proto_ip;
 122         struct interface_ip_settings config_ip;
 123         struct vlist_tree host_routes;
 124
 125         int metric;
 126         unsigned int ip4table;
 127         unsigned int ip6table;
 128
 129         /* IPv6 assignment parameters */
 130         uint8_t assignment_length;
 131         int32_t assignment_hint;
 132         struct list_head assignment_classes;
 133
 134         /* errors/warnings while trying to bring up the interface */
 135         struct list_head errors;
 136
 137         /* extra data provided by protocol handlers or modules */
 138         struct avl_tree data;
 139
 140         struct uloop_timeout remove_timer;
 141         struct ubus_object ubus;
 142 };
 143
 144
 145 extern struct vlist_tree interfaces;
 146 extern const struct uci_blob_param_list interface_attr_list;
 147
 148 struct interface *interface_alloc(const char *name, struct blob_attr *config);
 149
 150 void interface_set_dynamic(struct interface *iface);
 151
 152 void interface_add(struct interface *iface, struct blob_attr *config);
 153 bool interface_add_alias(struct interface *iface, struct blob_attr *config);
 154
 155 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state);
 156
 157 void interface_set_available(struct interface *iface, bool new_state);
 158 int interface_set_up(struct interface *iface);
 159 int interface_set_down(struct interface *iface);
 160 void __interface_set_down(struct interface *iface, bool force);
 161
 162 void interface_set_main_dev(struct interface *iface, struct device *dev);
 163 void interface_set_l3_dev(struct interface *iface, struct device *dev);
 164
 165 void interface_add_user(struct interface_user *dep, struct interface *iface);
 166 void interface_remove_user(struct interface_user *dep);
 167
 168 int interface_add_link(struct interface *iface, struct device *dev);
 169 int interface_remove_link(struct interface *iface, struct device *dev);
 170
 171 void interface_add_error(struct interface *iface, const char *subsystem,
 172                          const char *code, const char **data, int n_data);
 173
 174 int interface_add_data(struct interface *iface, const struct blob_attr *data);
 175
 176 void interface_update_start(struct interface *iface);
 177 void interface_update_complete(struct interface *iface);
 178
 179 void interface_start_pending(void);
 180
 181 #endif