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_DEVICE_H 15 #define __NETIFD_DEVICE_H 16 17 #include <libubox/avl.h> 18 #include <libubox/safe_list.h> 19 #include <netinet/in.h> 20 21 struct device; 22 struct device_type; 23 struct device_user; 24 struct device_hotplug_ops; 25 struct interface; 26 27 typedef int (*device_state_cb)(struct device *, bool up); 28 29 enum { 30 DEV_ATTR_TYPE, 31 DEV_ATTR_MTU, 32 DEV_ATTR_MTU6, 33 DEV_ATTR_MACADDR, 34 DEV_ATTR_TXQUEUELEN, 35 DEV_ATTR_ENABLED, 36 DEV_ATTR_IPV6, 37 DEV_ATTR_PROMISC, 38 DEV_ATTR_RPFILTER, 39 DEV_ATTR_ACCEPTLOCAL, 40 DEV_ATTR_IGMPVERSION, 41 DEV_ATTR_MLDVERSION, 42 DEV_ATTR_NEIGHREACHABLETIME, 43 DEV_ATTR_DADTRANSMITS, 44 DEV_ATTR_MULTICAST_TO_UNICAST, 45 DEV_ATTR_MULTICAST_ROUTER, 46 DEV_ATTR_MULTICAST_FAST_LEAVE, 47 DEV_ATTR_MULTICAST, 48 DEV_ATTR_LEARNING, 49 DEV_ATTR_UNICAST_FLOOD, 50 DEV_ATTR_NEIGHGCSTALETIME, 51 DEV_ATTR_SENDREDIRECTS, 52 DEV_ATTR_NEIGHLOCKTIME, 53 DEV_ATTR_ISOLATE, 54 __DEV_ATTR_MAX, 55 }; 56 57 enum dev_change_type { 58 DEV_CONFIG_NO_CHANGE, 59 DEV_CONFIG_APPLIED, 60 DEV_CONFIG_RESTART, 61 DEV_CONFIG_RECREATE, 62 }; 63 64 struct device_type { 65 struct list_head list; 66 const char *name; 67 68 bool bridge_capability; 69 const char *name_prefix; 70 71 const struct uci_blob_param_list *config_params; 72 73 struct device *(*create)(const char *name, struct device_type *devtype, 74 struct blob_attr *attr); 75 void (*config_init)(struct device *); 76 enum dev_change_type (*reload)(struct device *, struct blob_attr *); 77 void (*dump_info)(struct device *, struct blob_buf *buf); 78 void (*dump_stats)(struct device *, struct blob_buf *buf); 79 int (*check_state)(struct device *); 80 void (*free)(struct device *); 81 }; 82 83 enum { 84 DEV_OPT_MTU = (1 << 0), 85 DEV_OPT_MACADDR = (1 << 1), 86 DEV_OPT_TXQUEUELEN = (1 << 2), 87 DEV_OPT_IPV6 = (1 << 3), 88 DEV_OPT_PROMISC = (1 << 4), 89 DEV_OPT_RPFILTER = (1 << 5), 90 DEV_OPT_ACCEPTLOCAL = (1 << 6), 91 DEV_OPT_IGMPVERSION = (1 << 7), 92 DEV_OPT_MLDVERSION = (1 << 8), 93 DEV_OPT_NEIGHREACHABLETIME = (1 << 9), 94 /* 2 bit hole */ 95 DEV_OPT_MTU6 = (1 << 12), 96 DEV_OPT_DADTRANSMITS = (1 << 13), 97 DEV_OPT_MULTICAST_TO_UNICAST = (1 << 14), 98 DEV_OPT_MULTICAST_ROUTER = (1 << 15), 99 DEV_OPT_MULTICAST = (1 << 16), 100 DEV_OPT_LEARNING = (1 << 17), 101 DEV_OPT_UNICAST_FLOOD = (1 << 18), 102 DEV_OPT_NEIGHGCSTALETIME = (1 << 19), 103 DEV_OPT_MULTICAST_FAST_LEAVE = (1 << 20), 104 DEV_OPT_SENDREDIRECTS = (1 << 21), 105 DEV_OPT_NEIGHLOCKTIME = (1 << 22), 106 DEV_OPT_ISOLATE = (1 << 23), 107 }; 108 109 /* events broadcasted to all users of a device */ 110 enum device_event { 111 DEV_EVENT_ADD, 112 DEV_EVENT_REMOVE, 113 114 DEV_EVENT_UPDATE_IFNAME, 115 DEV_EVENT_UPDATE_IFINDEX, 116 117 DEV_EVENT_SETUP, 118 DEV_EVENT_TEARDOWN, 119 DEV_EVENT_UP, 120 DEV_EVENT_DOWN, 121 122 DEV_EVENT_LINK_UP, 123 DEV_EVENT_LINK_DOWN, 124 125 /* Topology changed (i.e. bridge member added) */ 126 DEV_EVENT_TOPO_CHANGE, 127 128 __DEV_EVENT_MAX 129 }; 130 131 /* 132 * device dependency with callbacks 133 */ 134 struct device_user { 135 struct safe_list list; 136 137 bool claimed; 138 bool hotplug; 139 bool alias; 140 141 uint8_t ev_idx[__DEV_EVENT_MAX]; 142 143 struct device *dev; 144 void (*cb)(struct device_user *, enum device_event); 145 }; 146 147 struct device_settings { 148 unsigned int flags; 149 unsigned int valid_flags; 150 unsigned int mtu; 151 unsigned int mtu6; 152 unsigned int txqueuelen; 153 uint8_t macaddr[6]; 154 bool ipv6; 155 bool promisc; 156 unsigned int rpfilter; 157 bool acceptlocal; 158 unsigned int igmpversion; 159 unsigned int mldversion; 160 unsigned int neigh4reachabletime; 161 unsigned int neigh6reachabletime; 162 unsigned int neigh4gcstaletime; 163 unsigned int neigh6gcstaletime; 164 int neigh4locktime; 165 unsigned int dadtransmits; 166 bool multicast_to_unicast; 167 unsigned int multicast_router; 168 bool multicast_fast_leave; 169 bool multicast; 170 bool learning; 171 bool unicast_flood; 172 bool sendredirects; 173 bool isolate; 174 }; 175 176 /* 177 * link layer device. typically represents a linux network device. 178 * can be used to support VLANs as well 179 */ 180 struct device { 181 struct device_type *type; 182 183 struct avl_node avl; 184 struct safe_list users; 185 struct safe_list aliases; 186 187 char ifname[IFNAMSIZ + 1]; 188 int ifindex; 189 190 struct blob_attr *config; 191 bool config_pending; 192 bool sys_present; 193 /* DEV_EVENT_ADD */ 194 bool present; 195 /* DEV_EVENT_UP */ 196 int active; 197 /* DEV_EVENT_LINK_UP */ 198 bool link_active; 199 200 bool external; 201 bool disabled; 202 bool deferred; 203 bool hidden; 204 205 bool current_config; 206 bool iface_config; 207 bool default_config; 208 bool wireless; 209 bool wireless_ap; 210 bool wireless_isolate; 211 212 struct interface *config_iface; 213 214 /* set interface up or down */ 215 device_state_cb set_state; 216 217 const struct device_hotplug_ops *hotplug_ops; 218 219 struct device_user parent; 220 221 struct device_settings orig_settings; 222 struct device_settings settings; 223 }; 224 225 struct device_hotplug_ops { 226 int (*prepare)(struct device *dev); 227 int (*add)(struct device *main, struct device *member); 228 int (*del)(struct device *main, struct device *member); 229 }; 230 231 extern const struct uci_blob_param_list device_attr_list; 232 extern struct device_type simple_device_type; 233 extern struct device_type tunnel_device_type; 234 235 void device_lock(void); 236 void device_unlock(void); 237 238 int device_type_add(struct device_type *devtype); 239 struct device_type *device_type_get(const char *tname); 240 struct device *device_create(const char *name, struct device_type *type, 241 struct blob_attr *config); 242 void device_merge_settings(struct device *dev, struct device_settings *n); 243 void device_init_settings(struct device *dev, struct blob_attr **tb); 244 void device_init_pending(void); 245 246 enum dev_change_type 247 device_apply_config(struct device *dev, struct device_type *type, 248 struct blob_attr *config); 249 250 void device_reset_config(void); 251 void device_reset_old(void); 252 253 int device_init_virtual(struct device *dev, struct device_type *type, const char *name); 254 int device_init(struct device *dev, struct device_type *type, const char *ifname); 255 void device_cleanup(struct device *dev); 256 struct device *device_find(const char *name); 257 struct device *device_get(const char *name, int create); 258 void device_add_user(struct device_user *dep, struct device *dev); 259 void device_remove_user(struct device_user *dep); 260 void device_broadcast_event(struct device *dev, enum device_event ev); 261 262 void device_set_present(struct device *dev, bool state); 263 void device_set_link(struct device *dev, bool state); 264 void device_set_ifindex(struct device *dev, int ifindex); 265 int device_set_ifname(struct device *dev, const char *name); 266 void device_refresh_present(struct device *dev); 267 int device_claim(struct device_user *dep); 268 void device_release(struct device_user *dep); 269 int device_check_state(struct device *dev); 270 void device_dump_status(struct blob_buf *b, struct device *dev); 271 272 void device_free_unused(struct device *dev); 273 274 struct device *get_vlan_device_chain(const char *ifname, bool create); 275 void alias_notify_device(const char *name, struct device *dev); 276 struct device *device_alias_get(const char *name); 277 278 static inline void 279 device_set_deferred(struct device *dev, bool value) 280 { 281 dev->deferred = value; 282 device_refresh_present(dev); 283 } 284 285 static inline void 286 device_set_disabled(struct device *dev, bool value) 287 { 288 dev->disabled = value; 289 device_refresh_present(dev); 290 } 291 292 #endif 293
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