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 *device; 111 char *jail; 112 char *jail_ifname; 113 int netns_fd; 114 115 bool available; 116 bool autostart; 117 bool config_autostart; 118 bool device_config; 119 bool enabled; 120 bool link_state; 121 bool force_link; 122 bool dynamic; 123 bool policy_rules_set; 124 bool link_up_event; 125 126 time_t start_time; 127 enum interface_state state; 128 enum interface_config_state config_state; 129 enum interface_update_flags updated; 130 131 struct list_head users; 132 133 /* for alias interface */ 134 const char *parent_ifname; 135 struct interface_user parent_iface; 136 137 /* main interface that the interface is bound to */ 138 struct device_user main_dev; 139 struct device_user ext_dev; 140 141 /* interface that layer 3 communication will go through */ 142 struct device_user l3_dev; 143 144 struct blob_attr *config; 145 146 /* primary protocol state */ 147 const struct proto_handler *proto_handler; 148 struct interface_proto_state *proto; 149 150 struct interface_ip_settings proto_ip; 151 struct interface_ip_settings config_ip; 152 struct vlist_tree host_routes; 153 struct vlist_tree host_neighbors; 154 155 int metric; 156 int dns_metric; 157 unsigned int ip4table; 158 unsigned int ip6table; 159 160 /* IPv6 assignment parameters */ 161 enum interface_id_selection_type assignment_iface_id_selection; 162 struct in6_addr assignment_fixed_iface_id; 163 uint8_t assignment_length; 164 int32_t assignment_hint; 165 struct list_head assignment_classes; 166 int assignment_weight; 167 168 /* errors/warnings while trying to bring up the interface */ 169 struct list_head errors; 170 171 /* extra data provided by protocol handlers or modules */ 172 struct avl_tree data; 173 174 struct uloop_timeout remove_timer; 175 struct ubus_object ubus; 176 }; 177 178 179 extern struct vlist_tree interfaces; 180 extern const struct uci_blob_param_list interface_attr_list; 181 182 struct interface *interface_alloc(const char *name, struct blob_attr *config, bool dynamic); 183 184 bool interface_add(struct interface *iface, struct blob_attr *config); 185 bool interface_add_alias(struct interface *iface, struct blob_attr *config); 186 187 void interface_set_proto_state(struct interface *iface, struct interface_proto_state *state); 188 189 void interface_set_available(struct interface *iface, bool new_state); 190 void interface_set_up(struct interface *iface); 191 void interface_set_down(struct interface *iface); 192 int interface_renew(struct interface *iface); 193 194 void interface_set_l3_dev(struct interface *iface, struct device *dev); 195 196 void interface_add_user(struct interface_user *dep, struct interface *iface); 197 void interface_remove_user(struct interface_user *dep); 198 199 int interface_handle_link(struct interface *iface, const char *name, struct blob_attr *vlan, bool add, bool link_ext); 200 201 void interface_add_error(struct interface *iface, const char *subsystem, 202 const char *code, const char **data, int n_data); 203 204 int interface_add_data(struct interface *iface, const struct blob_attr *data); 205 int interface_parse_data(struct interface *iface, const struct blob_attr *attr); 206 207 void interface_update_start(struct interface *iface, const bool keep_old); 208 void interface_update_complete(struct interface *iface); 209 210 void interface_start_pending(void); 211 void interface_start_jail(const char *jail, const pid_t netns_pid); 212 void interface_stop_jail(const char *jail, const pid_t netns_pid); 213 214 #endif 215
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