device.c

   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 #include <string.h>
  15 #include <stdlib.h>
  16 #include <stdio.h>
  17 #include <assert.h>
  18
  19 #include <sys/types.h>
  20 #include <sys/socket.h>
  21
  22 #include <libubox/list.h>
  23
  24 #include "netifd.h"
  25 #include "system.h"
  26 #include "config.h"
  27 #include "wireless.h"
  28
  29 static struct list_head devtypes = LIST_HEAD_INIT(devtypes);
  30 static struct avl_tree devices;
  31
  32 static const struct blobmsg_policy dev_attrs[__DEV_ATTR_MAX] = {
  33         [DEV_ATTR_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
  34         [DEV_ATTR_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
  35         [DEV_ATTR_MTU6] = { .name = "mtu6", .type = BLOBMSG_TYPE_INT32 },
  36         [DEV_ATTR_MACADDR] = { .name = "macaddr", .type = BLOBMSG_TYPE_STRING },
  37         [DEV_ATTR_TXQUEUELEN] = { .name = "txqueuelen", .type = BLOBMSG_TYPE_INT32 },
  38         [DEV_ATTR_ENABLED] = { .name = "enabled", .type = BLOBMSG_TYPE_BOOL },
  39         [DEV_ATTR_IPV6] = { .name = "ipv6", .type = BLOBMSG_TYPE_BOOL },
  40         [DEV_ATTR_IP6SEGMENTROUTING] = { .name = "ip6segmentrouting", .type = BLOBMSG_TYPE_BOOL },
  41         [DEV_ATTR_PROMISC] = { .name = "promisc", .type = BLOBMSG_TYPE_BOOL },
  42         [DEV_ATTR_RPFILTER] = { .name = "rpfilter", .type = BLOBMSG_TYPE_STRING },
  43         [DEV_ATTR_ACCEPTLOCAL] = { .name = "acceptlocal", .type = BLOBMSG_TYPE_BOOL },
  44         [DEV_ATTR_IGMPVERSION] = { .name = "igmpversion", .type = BLOBMSG_TYPE_INT32 },
  45         [DEV_ATTR_MLDVERSION] = { .name = "mldversion", .type = BLOBMSG_TYPE_INT32 },
  46         [DEV_ATTR_NEIGHREACHABLETIME] = { .name = "neighreachabletime", .type = BLOBMSG_TYPE_INT32 },
  47         [DEV_ATTR_NEIGHGCSTALETIME] = { .name = "neighgcstaletime", .type = BLOBMSG_TYPE_INT32 },
  48         [DEV_ATTR_DADTRANSMITS] = { .name = "dadtransmits", .type = BLOBMSG_TYPE_INT32 },
  49         [DEV_ATTR_MULTICAST_TO_UNICAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
  50         [DEV_ATTR_MULTICAST_ROUTER] = { .name = "multicast_router", .type = BLOBMSG_TYPE_INT32 },
  51         [DEV_ATTR_MULTICAST_FAST_LEAVE] = { .name = "multicast_fast_leave", . type = BLOBMSG_TYPE_BOOL },
  52         [DEV_ATTR_MULTICAST] = { .name ="multicast", .type = BLOBMSG_TYPE_BOOL },
  53         [DEV_ATTR_LEARNING] = { .name ="learning", .type = BLOBMSG_TYPE_BOOL },
  54         [DEV_ATTR_UNICAST_FLOOD] = { .name ="unicast_flood", .type = BLOBMSG_TYPE_BOOL },
  55         [DEV_ATTR_SENDREDIRECTS] = { .name = "sendredirects", .type = BLOBMSG_TYPE_BOOL },
  56         [DEV_ATTR_NEIGHLOCKTIME] = { .name = "neighlocktime", .type = BLOBMSG_TYPE_INT32 },
  57         [DEV_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
  58         [DEV_ATTR_DROP_V4_UNICAST_IN_L2_MULTICAST] = { .name = "drop_v4_unicast_in_l2_multicast", .type = BLOBMSG_TYPE_BOOL },
  59         [DEV_ATTR_DROP_V6_UNICAST_IN_L2_MULTICAST] = { .name = "drop_v6_unicast_in_l2_multicast", .type = BLOBMSG_TYPE_BOOL },
  60         [DEV_ATTR_DROP_GRATUITOUS_ARP] = { .name = "drop_gratuitous_arp", .type = BLOBMSG_TYPE_BOOL },
  61         [DEV_ATTR_DROP_UNSOLICITED_NA] = { .name = "drop_unsolicited_na", .type = BLOBMSG_TYPE_BOOL },
  62         [DEV_ATTR_ARP_ACCEPT] = { .name = "arp_accept", .type = BLOBMSG_TYPE_BOOL },
  63         [DEV_ATTR_AUTH] = { .name = "auth", .type = BLOBMSG_TYPE_BOOL },
  64         [DEV_ATTR_SPEED] = { .name = "speed", .type = BLOBMSG_TYPE_INT32 },
  65         [DEV_ATTR_DUPLEX] = { .name = "duplex", .type = BLOBMSG_TYPE_BOOL },
  66 };
  67
  68 const struct uci_blob_param_list device_attr_list = {
  69         .n_params = __DEV_ATTR_MAX,
  70         .params = dev_attrs,
  71 };
  72
  73 static int __devlock = 0;
  74
  75 int device_type_add(struct device_type *devtype)
  76 {
  77         if (device_type_get(devtype->name)) {
  78                 netifd_log_message(L_WARNING, "Device handler '%s' already exists\n",
  79                                    devtype->name);
  80                 return 1;
  81         }
  82
  83         netifd_log_message(L_NOTICE, "Added device handler type: %s\n",
  84                 devtype->name);
  85
  86         list_add(&devtype->list, &devtypes);
  87         return 0;
  88 }
  89
  90 struct device_type *
  91 device_type_get(const char *tname)
  92 {
  93         struct device_type *cur;
  94
  95         list_for_each_entry(cur, &devtypes, list)
  96                 if (!strcmp(cur->name, tname))
  97                         return cur;
  98
  99         return NULL;
 100 }
 101
 102 void device_lock(void)
 103 {
 104         __devlock++;
 105 }
 106
 107 void device_unlock(void)
 108 {
 109         __devlock--;
 110         if (!__devlock)
 111                 device_free_unused(NULL);
 112 }
 113
 114 static int device_vlan_len(struct kvlist *kv, const void *data)
 115 {
 116         return sizeof(unsigned int);
 117 }
 118
 119 void device_vlan_update(bool done)
 120 {
 121         struct device *dev;
 122
 123         avl_for_each_element(&devices, dev, avl) {
 124                 if (!dev->vlans.update)
 125                         continue;
 126
 127                 if (!done) {
 128                         if (dev->vlan_aliases.get_len)
 129                                 kvlist_free(&dev->vlan_aliases);
 130                         else
 131                                 kvlist_init(&dev->vlan_aliases, device_vlan_len);
 132                         vlist_update(&dev->vlans);
 133                 } else {
 134                         vlist_flush(&dev->vlans);
 135
 136                         if (dev->type->vlan_update)
 137                                 dev->type->vlan_update(dev);
 138                 }
 139         }
 140 }
 141
 142 void device_stp_init(void)
 143 {
 144         struct device *dev;
 145
 146         avl_for_each_element(&devices, dev, avl) {
 147                 if (!dev->type->stp_init)
 148                         continue;
 149
 150                 dev->type->stp_init(dev);
 151         }
 152 }
 153
 154 static int set_device_state(struct device *dev, bool state)
 155 {
 156         if (state) {
 157                 /* Get ifindex for all devices being enabled so a valid  */
 158                 /* ifindex is in place avoiding possible race conditions */
 159                 device_set_ifindex(dev, system_if_resolve(dev));
 160                 if (!dev->ifindex)
 161                         return -1;
 162
 163                 system_if_get_settings(dev, &dev->orig_settings);
 164                 /* Only keep orig settings based on what needs to be set */
 165                 dev->orig_settings.valid_flags = dev->orig_settings.flags;
 166                 dev->orig_settings.flags &= dev->settings.flags;
 167                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 168
 169                 system_if_up(dev);
 170         } else {
 171                 system_if_down(dev);
 172                 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int
 179 simple_device_set_state(struct device *dev, bool state)
 180 {
 181         struct device *pdev;
 182         int ret = 0;
 183
 184         pdev = dev->parent.dev;
 185         if (state && !pdev) {
 186                 pdev = system_if_get_parent(dev);
 187                 if (pdev)
 188                         device_add_user(&dev->parent, pdev);
 189         }
 190
 191         if (pdev) {
 192                 if (state)
 193                         ret = device_claim(&dev->parent);
 194                 else
 195                         device_release(&dev->parent);
 196
 197                 if (ret < 0)
 198                         return ret;
 199         }
 200         return set_device_state(dev, state);
 201 }
 202
 203 static struct device *
 204 simple_device_create(const char *name, struct device_type *devtype,
 205                      struct blob_attr *attr)
 206 {
 207         struct blob_attr *tb[__DEV_ATTR_MAX];
 208         struct device *dev = NULL;
 209
 210         /* device type is unused for simple devices */
 211         devtype = NULL;
 212
 213         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb, blob_data(attr), blob_len(attr));
 214         dev = device_get(name, true);
 215         if (!dev)
 216                 return NULL;
 217
 218         dev->set_state = simple_device_set_state;
 219         device_init_settings(dev, tb);
 220
 221         return dev;
 222 }
 223
 224 static void simple_device_free(struct device *dev)
 225 {
 226         if (dev->parent.dev)
 227                 device_remove_user(&dev->parent);
 228         free(dev);
 229 }
 230
 231 struct device_type simple_device_type = {
 232         .name = "Network device",
 233         .config_params = &device_attr_list,
 234
 235         .create = simple_device_create,
 236         .check_state = system_if_check,
 237         .free = simple_device_free,
 238 };
 239
 240 void
 241 device_merge_settings(struct device *dev, struct device_settings *n)
 242 {
 243         struct device_settings *os = &dev->orig_settings;
 244         struct device_settings *s = &dev->settings;
 245
 246         memset(n, 0, sizeof(*n));
 247         n->mtu = s->flags & DEV_OPT_MTU ? s->mtu : os->mtu;
 248         n->mtu6 = s->flags & DEV_OPT_MTU6 ? s->mtu6 : os->mtu6;
 249         n->txqueuelen = s->flags & DEV_OPT_TXQUEUELEN ?
 250                 s->txqueuelen : os->txqueuelen;
 251         memcpy(n->macaddr,
 252                 (s->flags & (DEV_OPT_MACADDR|DEV_OPT_DEFAULT_MACADDR) ? s->macaddr : os->macaddr),
 253                 sizeof(n->macaddr));
 254         n->ipv6 = s->flags & DEV_OPT_IPV6 ? s->ipv6 : os->ipv6;
 255         n->ip6segmentrouting = s->flags & DEV_OPT_IP6SEGMENTROUTING ? s->ip6segmentrouting : os->ip6segmentrouting;
 256         n->promisc = s->flags & DEV_OPT_PROMISC ? s->promisc : os->promisc;
 257         n->rpfilter = s->flags & DEV_OPT_RPFILTER ? s->rpfilter : os->rpfilter;
 258         n->acceptlocal = s->flags & DEV_OPT_ACCEPTLOCAL ? s->acceptlocal : os->acceptlocal;
 259         n->igmpversion = s->flags & DEV_OPT_IGMPVERSION ? s->igmpversion : os->igmpversion;
 260         n->mldversion = s->flags & DEV_OPT_MLDVERSION ? s->mldversion : os->mldversion;
 261         n->neigh4reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 262                 s->neigh4reachabletime : os->neigh4reachabletime;
 263         n->neigh6reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 264                 s->neigh6reachabletime : os->neigh6reachabletime;
 265         n->neigh4gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 266                 s->neigh4gcstaletime : os->neigh4gcstaletime;
 267         n->neigh6gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 268                 s->neigh6gcstaletime : os->neigh6gcstaletime;
 269         n->neigh4locktime = s->flags & DEV_OPT_NEIGHLOCKTIME ?
 270                 s->neigh4locktime : os->neigh4locktime;
 271         n->dadtransmits = s->flags & DEV_OPT_DADTRANSMITS ?
 272                 s->dadtransmits : os->dadtransmits;
 273         n->multicast = s->flags & DEV_OPT_MULTICAST ?
 274                 s->multicast : os->multicast;
 275         n->multicast_to_unicast = s->multicast_to_unicast;
 276         n->multicast_router = s->multicast_router;
 277         n->multicast_fast_leave = s->multicast_fast_leave;
 278         n->learning = s->learning;
 279         n->unicast_flood = s->unicast_flood;
 280         n->sendredirects = s->flags & DEV_OPT_SENDREDIRECTS ?
 281                 s->sendredirects : os->sendredirects;
 282         n->drop_v4_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST ?
 283                 s->drop_v4_unicast_in_l2_multicast : os->drop_v4_unicast_in_l2_multicast;
 284         n->drop_v6_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST ?
 285                 s->drop_v6_unicast_in_l2_multicast : os->drop_v6_unicast_in_l2_multicast;
 286         n->drop_gratuitous_arp = s->flags & DEV_OPT_DROP_GRATUITOUS_ARP ?
 287                 s->drop_gratuitous_arp : os->drop_gratuitous_arp;
 288         n->drop_unsolicited_na = s->flags & DEV_OPT_DROP_UNSOLICITED_NA ?
 289                 s->drop_unsolicited_na : os->drop_unsolicited_na;
 290         n->arp_accept = s->flags & DEV_OPT_ARP_ACCEPT ?
 291                 s->arp_accept : os->arp_accept;
 292         n->auth = s->flags & DEV_OPT_AUTH ? s->auth : os->auth;
 293         n->speed = s->flags & DEV_OPT_SPEED ? s->speed : os->speed;
 294         n->duplex = s->flags & DEV_OPT_DUPLEX ? s->duplex : os->duplex;
 295         n->flags = s->flags | os->flags | os->valid_flags;
 296 }
 297
 298 void
 299 device_init_settings(struct device *dev, struct blob_attr **tb)
 300 {
 301         struct device_settings *s = &dev->settings;
 302         struct blob_attr *cur;
 303         struct ether_addr *ea;
 304         bool disabled = false;
 305
 306         s->flags = 0;
 307         if ((cur = tb[DEV_ATTR_ENABLED]))
 308                 disabled = !blobmsg_get_bool(cur);
 309
 310         if ((cur = tb[DEV_ATTR_MTU]) && blobmsg_get_u32(cur) >= 68) {
 311                 s->mtu = blobmsg_get_u32(cur);
 312                 s->flags |= DEV_OPT_MTU;
 313         }
 314
 315         if ((cur = tb[DEV_ATTR_MTU6]) && blobmsg_get_u32(cur) >= 1280) {
 316                 s->mtu6 = blobmsg_get_u32(cur);
 317                 s->flags |= DEV_OPT_MTU6;
 318         }
 319
 320         if ((cur = tb[DEV_ATTR_TXQUEUELEN])) {
 321                 s->txqueuelen = blobmsg_get_u32(cur);
 322                 s->flags |= DEV_OPT_TXQUEUELEN;
 323         }
 324
 325         if ((cur = tb[DEV_ATTR_MACADDR])) {
 326                 ea = ether_aton(blobmsg_data(cur));
 327                 if (ea) {
 328                         memcpy(s->macaddr, ea, 6);
 329                         s->flags |= DEV_OPT_MACADDR;
 330                 }
 331         }
 332
 333         if ((cur = tb[DEV_ATTR_IPV6])) {
 334                 s->ipv6 = blobmsg_get_bool(cur);
 335                 s->flags |= DEV_OPT_IPV6;
 336         }
 337
 338         if ((cur = tb[DEV_ATTR_IP6SEGMENTROUTING])) {
 339                 s->ip6segmentrouting = blobmsg_get_bool(cur);
 340                 s->flags |= DEV_OPT_IP6SEGMENTROUTING;
 341         }
 342
 343         if ((cur = tb[DEV_ATTR_PROMISC])) {
 344                 s->promisc = blobmsg_get_bool(cur);
 345                 s->flags |= DEV_OPT_PROMISC;
 346         }
 347
 348         if ((cur = tb[DEV_ATTR_RPFILTER])) {
 349                 if (system_resolve_rpfilter(blobmsg_data(cur), &s->rpfilter))
 350                         s->flags |= DEV_OPT_RPFILTER;
 351                 else
 352                         DPRINTF("Failed to resolve rpfilter: %s\n", (char *) blobmsg_data(cur));
 353         }
 354
 355         if ((cur = tb[DEV_ATTR_ACCEPTLOCAL])) {
 356                 s->acceptlocal = blobmsg_get_bool(cur);
 357                 s->flags |= DEV_OPT_ACCEPTLOCAL;
 358         }
 359
 360         if ((cur = tb[DEV_ATTR_IGMPVERSION])) {
 361                 s->igmpversion = blobmsg_get_u32(cur);
 362                 if (s->igmpversion >= 1 && s->igmpversion <= 3)
 363                         s->flags |= DEV_OPT_IGMPVERSION;
 364                 else
 365                         DPRINTF("Failed to resolve igmpversion: %d\n", blobmsg_get_u32(cur));
 366         }
 367
 368         if ((cur = tb[DEV_ATTR_MLDVERSION])) {
 369                 s->mldversion = blobmsg_get_u32(cur);
 370                 if (s->mldversion >= 1 && s->mldversion <= 2)
 371                         s->flags |= DEV_OPT_MLDVERSION;
 372                 else
 373                         DPRINTF("Failed to resolve mldversion: %d\n", blobmsg_get_u32(cur));
 374         }
 375
 376         if ((cur = tb[DEV_ATTR_NEIGHREACHABLETIME])) {
 377                 s->neigh6reachabletime = s->neigh4reachabletime = blobmsg_get_u32(cur);
 378                 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
 379         }
 380
 381         if ((cur = tb[DEV_ATTR_NEIGHGCSTALETIME])) {
 382                 s->neigh6gcstaletime = s->neigh4gcstaletime = blobmsg_get_u32(cur);
 383                 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
 384         }
 385
 386         if ((cur = tb[DEV_ATTR_NEIGHLOCKTIME])) {
 387                 s->neigh4locktime = blobmsg_get_u32(cur);
 388                 s->flags |= DEV_OPT_NEIGHLOCKTIME;
 389         }
 390
 391         if ((cur = tb[DEV_ATTR_DADTRANSMITS])) {
 392                 s->dadtransmits = blobmsg_get_u32(cur);
 393                 s->flags |= DEV_OPT_DADTRANSMITS;
 394         }
 395
 396         if ((cur = tb[DEV_ATTR_MULTICAST_TO_UNICAST])) {
 397                 s->multicast_to_unicast = blobmsg_get_bool(cur);
 398                 s->flags |= DEV_OPT_MULTICAST_TO_UNICAST;
 399         }
 400
 401         if ((cur = tb[DEV_ATTR_MULTICAST_ROUTER])) {
 402                 s->multicast_router = blobmsg_get_u32(cur);
 403                 if (s->multicast_router <= 2)
 404                         s->flags |= DEV_OPT_MULTICAST_ROUTER;
 405                 else
 406                         DPRINTF("Invalid value: %d - (Use 0: never, 1: learn, 2: always)\n", blobmsg_get_u32(cur));
 407         }
 408
 409         if ((cur = tb[DEV_ATTR_MULTICAST_FAST_LEAVE])) {
 410                 s->multicast_fast_leave = blobmsg_get_bool(cur);
 411                 s->flags |= DEV_OPT_MULTICAST_FAST_LEAVE;
 412         }
 413
 414         if ((cur = tb[DEV_ATTR_MULTICAST])) {
 415                 s->multicast = blobmsg_get_bool(cur);
 416                 s->flags |= DEV_OPT_MULTICAST;
 417         }
 418
 419         if ((cur = tb[DEV_ATTR_LEARNING])) {
 420                 s->learning = blobmsg_get_bool(cur);
 421                 s->flags |= DEV_OPT_LEARNING;
 422         }
 423
 424         if ((cur = tb[DEV_ATTR_UNICAST_FLOOD])) {
 425                 s->unicast_flood = blobmsg_get_bool(cur);
 426                 s->flags |= DEV_OPT_UNICAST_FLOOD;
 427         }
 428
 429         if ((cur = tb[DEV_ATTR_SENDREDIRECTS])) {
 430                 s->sendredirects = blobmsg_get_bool(cur);
 431                 s->flags |= DEV_OPT_SENDREDIRECTS;
 432         }
 433
 434         if ((cur = tb[DEV_ATTR_ISOLATE])) {
 435                 s->isolate = blobmsg_get_bool(cur);
 436                 s->flags |= DEV_OPT_ISOLATE;
 437         }
 438
 439         if ((cur = tb[DEV_ATTR_DROP_V4_UNICAST_IN_L2_MULTICAST])) {
 440                 s->drop_v4_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 441                 s->flags |= DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST;
 442         }
 443
 444         if ((cur = tb[DEV_ATTR_DROP_V6_UNICAST_IN_L2_MULTICAST])) {
 445                 s->drop_v6_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 446                 s->flags |= DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST;
 447         }
 448
 449         if ((cur = tb[DEV_ATTR_DROP_GRATUITOUS_ARP])) {
 450                 s->drop_gratuitous_arp = blobmsg_get_bool(cur);
 451                 s->flags |= DEV_OPT_DROP_GRATUITOUS_ARP;
 452         }
 453
 454         if ((cur = tb[DEV_ATTR_DROP_UNSOLICITED_NA])) {
 455                 s->drop_unsolicited_na = blobmsg_get_bool(cur);
 456                 s->flags |= DEV_OPT_DROP_UNSOLICITED_NA;
 457         }
 458
 459         if ((cur = tb[DEV_ATTR_ARP_ACCEPT])) {
 460                 s->arp_accept = blobmsg_get_bool(cur);
 461                 s->flags |= DEV_OPT_ARP_ACCEPT;
 462         }
 463
 464         if ((cur = tb[DEV_ATTR_AUTH])) {
 465                 s->auth = blobmsg_get_bool(cur);
 466                 s->flags |= DEV_OPT_AUTH;
 467         }
 468
 469         if ((cur = tb[DEV_ATTR_SPEED])) {
 470                 s->speed = blobmsg_get_u32(cur);
 471                 s->flags |= DEV_OPT_SPEED;
 472         }
 473
 474         if ((cur = tb[DEV_ATTR_DUPLEX])) {
 475                 s->duplex = blobmsg_get_bool(cur);
 476                 s->flags |= DEV_OPT_DUPLEX;
 477         }
 478
 479         device_set_disabled(dev, disabled);
 480 }
 481
 482 static void __init dev_init(void)
 483 {
 484         avl_init(&devices, avl_strcmp, true, NULL);
 485 }
 486
 487 static int device_broadcast_cb(void *ctx, struct safe_list *list)
 488 {
 489         struct device_user *dep = container_of(list, struct device_user, list);
 490         int *ev = ctx;
 491
 492         /* device might have been removed by an earlier callback */
 493         if (!dep->dev)
 494                 return 0;
 495
 496         if (dep->cb)
 497                 dep->cb(dep, *ev);
 498         return 0;
 499 }
 500
 501 void device_broadcast_event(struct device *dev, enum device_event ev)
 502 {
 503         int dev_ev = ev;
 504
 505         safe_list_for_each(&dev->aliases, device_broadcast_cb, &dev_ev);
 506         safe_list_for_each(&dev->users, device_broadcast_cb, &dev_ev);
 507 }
 508
 509 static void
 510 device_fill_default_settings(struct device *dev)
 511 {
 512         struct device_settings *s = &dev->settings;
 513         struct ether_addr *ea;
 514
 515         if (!(s->flags & DEV_OPT_MACADDR)) {
 516                 ea = config_get_default_macaddr(dev->ifname);
 517                 if (ea) {
 518                         memcpy(s->macaddr, ea, 6);
 519                         s->flags |= DEV_OPT_DEFAULT_MACADDR;
 520                 }
 521         }
 522 }
 523
 524 int device_claim(struct device_user *dep)
 525 {
 526         struct device *dev = dep->dev;
 527         int ret = 0;
 528
 529         if (dep->claimed)
 530                 return 0;
 531
 532         if (!dev)
 533                 return -1;
 534
 535         dep->claimed = true;
 536         D(DEVICE, "Claim %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active + 1);
 537         if (++dev->active != 1)
 538                 return 0;
 539
 540         device_broadcast_event(dev, DEV_EVENT_SETUP);
 541         device_fill_default_settings(dev);
 542         if (dev->external) {
 543                 /* Get ifindex for external claimed devices so a valid   */
 544                 /* ifindex is in place avoiding possible race conditions */
 545                 device_set_ifindex(dev, system_if_resolve(dev));
 546                 if (!dev->ifindex)
 547                         ret = -1;
 548
 549                 system_if_get_settings(dev, &dev->orig_settings);
 550         } else
 551                 ret = dev->set_state(dev, true);
 552
 553         if (ret == 0)
 554                 device_broadcast_event(dev, DEV_EVENT_UP);
 555         else {
 556                 D(DEVICE, "claim %s %s failed: %d\n", dev->type->name, dev->ifname, ret);
 557                 dev->active = 0;
 558                 dep->claimed = false;
 559         }
 560
 561         return ret;
 562 }
 563
 564 void device_release(struct device_user *dep)
 565 {
 566         struct device *dev = dep->dev;
 567
 568         if (!dep->claimed)
 569                 return;
 570
 571         dep->claimed = false;
 572         dev->active--;
 573         D(DEVICE, "Release %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active);
 574         assert(dev->active >= 0);
 575
 576         if (dev->active)
 577                 return;
 578
 579         device_broadcast_event(dev, DEV_EVENT_TEARDOWN);
 580         if (!dev->external)
 581                 dev->set_state(dev, false);
 582
 583         if (dev->active)
 584                 return;
 585
 586         device_broadcast_event(dev, DEV_EVENT_DOWN);
 587 }
 588
 589 int device_check_state(struct device *dev)
 590 {
 591         if (!dev->type->check_state)
 592                 return simple_device_type.check_state(dev);
 593
 594         return dev->type->check_state(dev);
 595 }
 596
 597 int device_init_virtual(struct device *dev, struct device_type *type, const char *name)
 598 {
 599         assert(dev);
 600         assert(type);
 601
 602         D(DEVICE, "Initialize device '%s'\n", name ? name : "");
 603         INIT_SAFE_LIST(&dev->users);
 604         INIT_SAFE_LIST(&dev->aliases);
 605         dev->type = type;
 606
 607         if (name) {
 608                 int ret;
 609
 610                 ret = device_set_ifname(dev, name);
 611                 if (ret < 0)
 612                         return ret;
 613         }
 614
 615         if (!dev->set_state)
 616                 dev->set_state = set_device_state;
 617
 618         return 0;
 619 }
 620
 621 int device_init(struct device *dev, struct device_type *type, const char *ifname)
 622 {
 623         int ret;
 624
 625         ret = device_init_virtual(dev, type, ifname);
 626         if (ret < 0)
 627                 return ret;
 628
 629         dev->avl.key = dev->ifname;
 630
 631         ret = avl_insert(&devices, &dev->avl);
 632         if (ret < 0)
 633                 return ret;
 634
 635         system_if_clear_state(dev);
 636
 637         return 0;
 638 }
 639
 640 static struct device *
 641 device_create_default(const char *name, bool external)
 642 {
 643         struct device *dev;
 644
 645         if (!external && system_if_force_external(name))
 646                 return NULL;
 647
 648         D(DEVICE, "Create simple device '%s'\n", name);
 649         dev = calloc(1, sizeof(*dev));
 650         if (!dev)
 651                 return NULL;
 652
 653         dev->external = external;
 654         dev->set_state = simple_device_set_state;
 655
 656         if (device_init(dev, &simple_device_type, name) < 0) {
 657                 device_cleanup(dev);
 658                 free(dev);
 659                 return NULL;
 660         }
 661
 662         dev->default_config = true;
 663         if (external)
 664                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 665
 666         device_check_state(dev);
 667
 668         return dev;
 669 }
 670
 671 struct device *
 672 device_find(const char *name)
 673 {
 674         struct device *dev;
 675
 676         return avl_find_element(&devices, name, dev, avl);
 677 }
 678
 679 struct device *
 680 __device_get(const char *name, int create, bool check_vlan)
 681 {
 682         struct device *dev;
 683
 684         dev = avl_find_element(&devices, name, dev, avl);
 685
 686         if (!dev && check_vlan && strchr(name, '.'))
 687                 return get_vlan_device_chain(name, create);
 688
 689         if (name[0] == '@')
 690                 return device_alias_get(name + 1);
 691
 692         if (dev) {
 693                 if (create > 1 && !dev->external) {
 694                         system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 695                         dev->external = true;
 696                         device_set_present(dev, true);
 697                 }
 698                 return dev;
 699         }
 700
 701         if (!create)
 702                 return NULL;
 703
 704         return device_create_default(name, create > 1);
 705 }
 706
 707 static void
 708 device_delete(struct device *dev)
 709 {
 710         if (!dev->avl.key)
 711                 return;
 712
 713         D(DEVICE, "Delete device '%s' from list\n", dev->ifname);
 714         avl_delete(&devices, &dev->avl);
 715         dev->avl.key = NULL;
 716 }
 717
 718 static int device_cleanup_cb(void *ctx, struct safe_list *list)
 719 {
 720         struct device_user *dep = container_of(list, struct device_user, list);
 721         if (dep->cb)
 722                 dep->cb(dep, DEV_EVENT_REMOVE);
 723
 724         device_release(dep);
 725         return 0;
 726 }
 727
 728 void device_cleanup(struct device *dev)
 729 {
 730         D(DEVICE, "Clean up device '%s'\n", dev->ifname);
 731         safe_list_for_each(&dev->users, device_cleanup_cb, NULL);
 732         safe_list_for_each(&dev->aliases, device_cleanup_cb, NULL);
 733         device_delete(dev);
 734 }
 735
 736 static void __device_set_present(struct device *dev, bool state)
 737 {
 738         if (dev->present == state)
 739                 return;
 740
 741         dev->present = state;
 742         device_broadcast_event(dev, state ? DEV_EVENT_ADD : DEV_EVENT_REMOVE);
 743 }
 744
 745 void
 746 device_refresh_present(struct device *dev)
 747 {
 748         bool state = dev->sys_present;
 749
 750         if (dev->disabled || dev->deferred)
 751                 state = false;
 752
 753         __device_set_present(dev, state);
 754 }
 755
 756 void
 757 device_set_auth_status(struct device *dev, bool value)
 758 {
 759         if (dev->auth_status == value)
 760                 return;
 761
 762         dev->auth_status = value;
 763         if (!dev->present)
 764                 return;
 765
 766         if (dev->auth_status) {
 767                 device_broadcast_event(dev, DEV_EVENT_AUTH_UP);
 768                 return;
 769         }
 770
 771         device_broadcast_event(dev, DEV_EVENT_LINK_DOWN);
 772         if (!dev->link_active)
 773                 return;
 774
 775         device_broadcast_event(dev, DEV_EVENT_LINK_UP);
 776 }
 777
 778 void device_set_present(struct device *dev, bool state)
 779 {
 780         if (dev->sys_present == state)
 781                 return;
 782
 783         D(DEVICE, "%s '%s' %s present\n", dev->type->name, dev->ifname, state ? "is now" : "is no longer" );
 784         dev->sys_present = state;
 785         device_refresh_present(dev);
 786 }
 787
 788 void device_set_link(struct device *dev, bool state)
 789 {
 790         if (dev->link_active == state)
 791                 return;
 792
 793         netifd_log_message(L_NOTICE, "%s '%s' link is %s\n", dev->type->name, dev->ifname, state ? "up" : "down" );
 794
 795         dev->link_active = state;
 796         if (!state)
 797                 dev->auth_status = false;
 798         device_broadcast_event(dev, state ? DEV_EVENT_LINK_UP : DEV_EVENT_LINK_DOWN);
 799 }
 800
 801 void device_set_ifindex(struct device *dev, int ifindex)
 802 {
 803         if (dev->ifindex == ifindex)
 804                 return;
 805
 806         dev->ifindex = ifindex;
 807         device_broadcast_event(dev, DEV_EVENT_UPDATE_IFINDEX);
 808 }
 809
 810 int device_set_ifname(struct device *dev, const char *name)
 811 {
 812         int ret = 0;
 813
 814         if (!strcmp(dev->ifname, name))
 815                 return 0;
 816
 817         if (strlen(name) > sizeof(dev->ifname) - 1)
 818                 return -1;
 819
 820         if (dev->avl.key)
 821                 avl_delete(&devices, &dev->avl);
 822
 823         strcpy(dev->ifname, name);
 824
 825         if (dev->avl.key)
 826                 ret = avl_insert(&devices, &dev->avl);
 827
 828         if (ret == 0)
 829                 device_broadcast_event(dev, DEV_EVENT_UPDATE_IFNAME);
 830
 831         return ret;
 832 }
 833
 834 static int device_refcount(struct device *dev)
 835 {
 836         struct list_head *list;
 837         int count = 0;
 838
 839         list_for_each(list, &dev->users.list)
 840                 count++;
 841
 842         list_for_each(list, &dev->aliases.list)
 843                 count++;
 844
 845         return count;
 846 }
 847
 848 static void
 849 __device_add_user(struct device_user *dep, struct device *dev)
 850 {
 851         struct safe_list *head;
 852
 853         dep->dev = dev;
 854
 855         if (dep->alias)
 856                 head = &dev->aliases;
 857         else
 858                 head = &dev->users;
 859
 860         safe_list_add(&dep->list, head);
 861         D(DEVICE, "Add user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
 862
 863         if (dep->cb && dev->present) {
 864                 dep->cb(dep, DEV_EVENT_ADD);
 865                 if (dev->active)
 866                         dep->cb(dep, DEV_EVENT_UP);
 867
 868                 if (dev->link_active)
 869                         dep->cb(dep, DEV_EVENT_LINK_UP);
 870         }
 871 }
 872
 873 void device_add_user(struct device_user *dep, struct device *dev)
 874 {
 875         if (dep->dev == dev)
 876                 return;
 877
 878         if (dep->dev)
 879                 device_remove_user(dep);
 880
 881         if (!dev)
 882                 return;
 883
 884         __device_add_user(dep, dev);
 885 }
 886
 887 static void
 888 device_free(struct device *dev)
 889 {
 890         __devlock++;
 891         free(dev->config);
 892         device_cleanup(dev);
 893         dev->type->free(dev);
 894         __devlock--;
 895 }
 896
 897 static void
 898 __device_free_unused(struct device *dev)
 899 {
 900         if (!safe_list_empty(&dev->users) ||
 901                 !safe_list_empty(&dev->aliases) ||
 902             dev->current_config || __devlock)
 903                 return;
 904
 905         device_free(dev);
 906 }
 907
 908 void device_remove_user(struct device_user *dep)
 909 {
 910         struct device *dev = dep->dev;
 911
 912         if (!dep->dev)
 913                 return;
 914
 915         dep->hotplug = false;
 916         if (dep->claimed)
 917                 device_release(dep);
 918
 919         safe_list_del(&dep->list);
 920         dep->dev = NULL;
 921         D(DEVICE, "Remove user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
 922         __device_free_unused(dev);
 923 }
 924
 925 void
 926 device_free_unused(struct device *dev)
 927 {
 928         struct device *tmp;
 929
 930         if (dev)
 931                 return __device_free_unused(dev);
 932
 933         avl_for_each_element_safe(&devices, dev, avl, tmp)
 934                 __device_free_unused(dev);
 935 }
 936
 937 void
 938 device_init_pending(void)
 939 {
 940         struct device *dev, *tmp;
 941
 942         avl_for_each_element_safe(&devices, dev, avl, tmp) {
 943                 if (!dev->config_pending)
 944                         continue;
 945
 946                 dev->type->config_init(dev);
 947                 dev->config_pending = false;
 948                 device_check_state(dev);
 949         }
 950 }
 951
 952 bool
 953 device_check_ip6segmentrouting(void)
 954 {
 955         struct device *dev;
 956         bool ip6segmentrouting = false;
 957
 958         avl_for_each_element(&devices, dev, avl)
 959                 ip6segmentrouting |= dev->settings.ip6segmentrouting;
 960
 961         return ip6segmentrouting;
 962 }
 963
 964 static enum dev_change_type
 965 device_set_config(struct device *dev, struct device_type *type,
 966                   struct blob_attr *attr)
 967 {
 968         struct blob_attr *tb[__DEV_ATTR_MAX];
 969         const struct uci_blob_param_list *cfg = type->config_params;
 970
 971         if (type != dev->type)
 972                 return DEV_CONFIG_RECREATE;
 973
 974         if (dev->type->reload)
 975                 return dev->type->reload(dev, attr);
 976
 977         if (uci_blob_check_equal(dev->config, attr, cfg))
 978                 return DEV_CONFIG_NO_CHANGE;
 979
 980         if (cfg == &device_attr_list) {
 981                 memset(tb, 0, sizeof(tb));
 982
 983                 if (attr)
 984                         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb,
 985                                 blob_data(attr), blob_len(attr));
 986
 987                 device_init_settings(dev, tb);
 988                 return DEV_CONFIG_RESTART;
 989         } else
 990                 return DEV_CONFIG_RECREATE;
 991 }
 992
 993 enum dev_change_type
 994 device_apply_config(struct device *dev, struct device_type *type,
 995                     struct blob_attr *config)
 996 {
 997         enum dev_change_type change;
 998
 999         change = device_set_config(dev, type, config);
1000         if (dev->external) {
1001                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1002                 change = DEV_CONFIG_APPLIED;
1003         }
1004
1005         switch (change) {
1006                 case DEV_CONFIG_RESTART:
1007                 case DEV_CONFIG_APPLIED:
1008                         D(DEVICE, "Device '%s': config applied\n", dev->ifname);
1009                         config = blob_memdup(config);
1010                         free(dev->config);
1011                         dev->config = config;
1012                         if (change == DEV_CONFIG_RESTART && dev->present) {
1013                                 int ret = 0;
1014
1015                                 device_set_present(dev, false);
1016                                 if (dev->active && !dev->external) {
1017                                         ret = dev->set_state(dev, false);
1018                                         if (!ret)
1019                                                 ret = dev->set_state(dev, true);
1020                                 }
1021                                 if (!ret)
1022                                         device_set_present(dev, true);
1023                         }
1024                         break;
1025                 case DEV_CONFIG_NO_CHANGE:
1026                         D(DEVICE, "Device '%s': no configuration change\n", dev->ifname);
1027                         break;
1028                 case DEV_CONFIG_RECREATE:
1029                         break;
1030         }
1031
1032         return change;
1033 }
1034
1035 static void
1036 device_replace(struct device *dev, struct device *odev)
1037 {
1038         struct device_user *dep, *tmp;
1039
1040         __devlock++;
1041         if (odev->present)
1042                 device_set_present(odev, false);
1043
1044         list_for_each_entry_safe(dep, tmp, &odev->users.list, list.list) {
1045                 device_release(dep);
1046                 safe_list_del(&dep->list);
1047                 __device_add_user(dep, dev);
1048         }
1049         __devlock--;
1050
1051         device_free(odev);
1052 }
1053
1054 void
1055 device_reset_config(void)
1056 {
1057         struct device *dev;
1058
1059         avl_for_each_element(&devices, dev, avl)
1060                 dev->current_config = false;
1061 }
1062
1063 void
1064 device_reset_old(void)
1065 {
1066         struct device *dev, *tmp, *ndev;
1067
1068         avl_for_each_element_safe(&devices, dev, avl, tmp) {
1069                 if (dev->current_config || dev->default_config)
1070                         continue;
1071
1072                 if (dev->type != &simple_device_type)
1073                         continue;
1074
1075                 ndev = device_create_default(dev->ifname, dev->external);
1076                 if (!ndev)
1077                         continue;
1078
1079                 device_replace(ndev, dev);
1080         }
1081 }
1082
1083 struct device *
1084 device_create(const char *name, struct device_type *type,
1085               struct blob_attr *config)
1086 {
1087         struct device *odev = NULL, *dev;
1088         enum dev_change_type change;
1089
1090         odev = device_find(name);
1091         if (odev) {
1092                 odev->current_config = true;
1093                 change = device_apply_config(odev, type, config);
1094                 switch (change) {
1095                 case DEV_CONFIG_RECREATE:
1096                         D(DEVICE, "Device '%s': recreate device\n", odev->ifname);
1097                         device_delete(odev);
1098                         break;
1099                 default:
1100                         return odev;
1101                 }
1102         } else
1103                 D(DEVICE, "Create new device '%s' (%s)\n", name, type->name);
1104
1105         config = blob_memdup(config);
1106         if (!config)
1107                 return NULL;
1108
1109         dev = type->create(name, type, config);
1110         if (!dev)
1111                 return NULL;
1112
1113         dev->current_config = true;
1114         dev->config = config;
1115         if (odev)
1116                 device_replace(dev, odev);
1117
1118         if (!config_init && dev->config_pending) {
1119                 type->config_init(dev);
1120                 dev->config_pending = false;
1121         }
1122
1123         device_check_state(dev);
1124
1125         return dev;
1126 }
1127
1128 void
1129 device_dump_status(struct blob_buf *b, struct device *dev)
1130 {
1131         struct device_settings st;
1132         void *c, *s;
1133
1134         if (!dev) {
1135                 avl_for_each_element(&devices, dev, avl) {
1136                         if (!dev->present)
1137                                 continue;
1138                         c = blobmsg_open_table(b, dev->ifname);
1139                         device_dump_status(b, dev);
1140                         blobmsg_close_table(b, c);
1141                 }
1142
1143                 return;
1144         }
1145
1146         blobmsg_add_u8(b, "external", dev->external);
1147         blobmsg_add_u8(b, "present", dev->present);
1148         blobmsg_add_string(b, "type", dev->type->name);
1149
1150         if (!dev->present)
1151                 return;
1152
1153         blobmsg_add_u8(b, "up", !!dev->active);
1154         blobmsg_add_u8(b, "carrier", !!dev->link_active);
1155         blobmsg_add_u8(b, "auth_status", !!dev->auth_status);
1156
1157         if (dev->type->dump_info)
1158                 dev->type->dump_info(dev, b);
1159         else
1160                 system_if_dump_info(dev, b);
1161
1162         if (dev->active) {
1163                 device_merge_settings(dev, &st);
1164                 if (st.flags & DEV_OPT_MTU)
1165                         blobmsg_add_u32(b, "mtu", st.mtu);
1166                 if (st.flags & DEV_OPT_MTU6)
1167                         blobmsg_add_u32(b, "mtu6", st.mtu6);
1168                 if (st.flags & DEV_OPT_MACADDR)
1169                         blobmsg_add_string(b, "macaddr", format_macaddr(st.macaddr));
1170                 if (st.flags & DEV_OPT_TXQUEUELEN)
1171                         blobmsg_add_u32(b, "txqueuelen", st.txqueuelen);
1172                 if (st.flags & DEV_OPT_IPV6)
1173                         blobmsg_add_u8(b, "ipv6", st.ipv6);
1174                 if (st.flags & DEV_OPT_IP6SEGMENTROUTING)
1175                         blobmsg_add_u8(b, "ip6segmentrouting", st.ip6segmentrouting);
1176                 if (st.flags & DEV_OPT_PROMISC)
1177                         blobmsg_add_u8(b, "promisc", st.promisc);
1178                 if (st.flags & DEV_OPT_RPFILTER)
1179                         blobmsg_add_u32(b, "rpfilter", st.rpfilter);
1180                 if (st.flags & DEV_OPT_ACCEPTLOCAL)
1181                         blobmsg_add_u8(b, "acceptlocal", st.acceptlocal);
1182                 if (st.flags & DEV_OPT_IGMPVERSION)
1183                         blobmsg_add_u32(b, "igmpversion", st.igmpversion);
1184                 if (st.flags & DEV_OPT_MLDVERSION)
1185                         blobmsg_add_u32(b, "mldversion", st.mldversion);
1186                 if (st.flags & DEV_OPT_NEIGHREACHABLETIME) {
1187                         blobmsg_add_u32(b, "neigh4reachabletime", st.neigh4reachabletime);
1188                         blobmsg_add_u32(b, "neigh6reachabletime", st.neigh6reachabletime);
1189                 }
1190                 if (st.flags & DEV_OPT_NEIGHGCSTALETIME) {
1191                         blobmsg_add_u32(b, "neigh4gcstaletime", st.neigh4gcstaletime);
1192                         blobmsg_add_u32(b, "neigh6gcstaletime", st.neigh6gcstaletime);
1193                 }
1194                 if (st.flags & DEV_OPT_NEIGHLOCKTIME)
1195                         blobmsg_add_u32(b, "neigh4locktime", st.neigh4locktime);
1196                 if (st.flags & DEV_OPT_DADTRANSMITS)
1197                         blobmsg_add_u32(b, "dadtransmits", st.dadtransmits);
1198                 if (st.flags & DEV_OPT_MULTICAST_TO_UNICAST)
1199                         blobmsg_add_u8(b, "multicast_to_unicast", st.multicast_to_unicast);
1200                 if (st.flags & DEV_OPT_MULTICAST_ROUTER)
1201                         blobmsg_add_u32(b, "multicast_router", st.multicast_router);
1202                 if (st.flags & DEV_OPT_MULTICAST_FAST_LEAVE)
1203                         blobmsg_add_u8(b, "multicast_fast_leave", st.multicast_fast_leave);
1204                 if (st.flags & DEV_OPT_MULTICAST)
1205                         blobmsg_add_u8(b, "multicast", st.multicast);
1206                 if (st.flags & DEV_OPT_LEARNING)
1207                         blobmsg_add_u8(b, "learning", st.learning);
1208                 if (st.flags & DEV_OPT_UNICAST_FLOOD)
1209                         blobmsg_add_u8(b, "unicast_flood", st.unicast_flood);
1210                 if (st.flags & DEV_OPT_SENDREDIRECTS)
1211                         blobmsg_add_u8(b, "sendredirects", st.sendredirects);
1212                 if (st.flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST)
1213                         blobmsg_add_u8(b, "drop_v4_unicast_in_l2_multicast", st.drop_v4_unicast_in_l2_multicast);
1214                 if (st.flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST)
1215                         blobmsg_add_u8(b, "drop_v6_unicast_in_l2_multicast", st.drop_v6_unicast_in_l2_multicast);
1216                 if (st.flags & DEV_OPT_DROP_GRATUITOUS_ARP)
1217                         blobmsg_add_u8(b, "drop_gratuitous_arp", st.drop_gratuitous_arp);
1218                 if (st.flags & DEV_OPT_DROP_UNSOLICITED_NA)
1219                         blobmsg_add_u8(b, "drop_unsolicited_na", st.drop_unsolicited_na);
1220                 if (st.flags & DEV_OPT_ARP_ACCEPT)
1221                         blobmsg_add_u8(b, "arp_accept", st.arp_accept);
1222                 if (st.flags & DEV_OPT_AUTH)
1223                         blobmsg_add_u8(b, "auth", st.auth);
1224         }
1225
1226         s = blobmsg_open_table(b, "statistics");
1227         if (dev->type->dump_stats)
1228                 dev->type->dump_stats(dev, b);
1229         else
1230                 system_if_dump_stats(dev, b);
1231         blobmsg_close_table(b, s);
1232 }
1233
1234 static void __init simple_device_type_init(void)
1235 {
1236         device_type_add(&simple_device_type);
1237 }
1238
1239 void device_hotplug_event(const char *name, bool add)
1240 {
1241         struct device *dev;
1242
1243         wireless_device_hotplug_event(name, add);
1244
1245         dev = device_find(name);
1246         if (!dev || dev->type != &simple_device_type)
1247                 return;
1248
1249         device_set_present(dev, add);
1250 }