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         [DEV_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_ARRAY },
  67 };
  68
  69 const struct uci_blob_param_list device_attr_list = {
  70         .n_params = __DEV_ATTR_MAX,
  71         .params = dev_attrs,
  72 };
  73
  74 static int __devlock = 0;
  75
  76 int device_type_add(struct device_type *devtype)
  77 {
  78         if (device_type_get(devtype->name)) {
  79                 netifd_log_message(L_WARNING, "Device handler '%s' already exists\n",
  80                                    devtype->name);
  81                 return 1;
  82         }
  83
  84         netifd_log_message(L_NOTICE, "Added device handler type: %s\n",
  85                 devtype->name);
  86
  87         list_add(&devtype->list, &devtypes);
  88         return 0;
  89 }
  90
  91 struct device_type *
  92 device_type_get(const char *tname)
  93 {
  94         struct device_type *cur;
  95
  96         list_for_each_entry(cur, &devtypes, list)
  97                 if (!strcmp(cur->name, tname))
  98                         return cur;
  99
 100         return NULL;
 101 }
 102
 103 static int device_vlan_len(struct kvlist *kv, const void *data)
 104 {
 105         return sizeof(unsigned int);
 106 }
 107
 108 void device_vlan_update(bool done)
 109 {
 110         struct device *dev;
 111
 112         avl_for_each_element(&devices, dev, avl) {
 113                 if (!dev->vlans.update)
 114                         continue;
 115
 116                 if (!done) {
 117                         if (dev->vlan_aliases.get_len)
 118                                 kvlist_free(&dev->vlan_aliases);
 119                         else
 120                                 kvlist_init(&dev->vlan_aliases, device_vlan_len);
 121                         vlist_update(&dev->vlans);
 122                 } else {
 123                         vlist_flush(&dev->vlans);
 124
 125                         if (dev->type->vlan_update)
 126                                 dev->type->vlan_update(dev);
 127                 }
 128         }
 129 }
 130
 131 void device_stp_init(void)
 132 {
 133         struct device *dev;
 134
 135         avl_for_each_element(&devices, dev, avl) {
 136                 if (!dev->type->stp_init)
 137                         continue;
 138
 139                 dev->type->stp_init(dev);
 140         }
 141 }
 142
 143 static int set_device_state(struct device *dev, bool state)
 144 {
 145         if (state) {
 146                 /* Get ifindex for all devices being enabled so a valid  */
 147                 /* ifindex is in place avoiding possible race conditions */
 148                 device_set_ifindex(dev, system_if_resolve(dev));
 149                 if (!dev->ifindex)
 150                         return -1;
 151
 152                 system_if_get_settings(dev, &dev->orig_settings);
 153                 /* Only keep orig settings based on what needs to be set */
 154                 dev->orig_settings.valid_flags = dev->orig_settings.flags;
 155                 dev->orig_settings.flags &= dev->settings.flags;
 156                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 157
 158                 system_if_up(dev);
 159         } else {
 160                 system_if_down(dev);
 161                 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
 162         }
 163
 164         return 0;
 165 }
 166
 167 static int
 168 simple_device_set_state(struct device *dev, bool state)
 169 {
 170         struct device *pdev;
 171         int ret = 0;
 172
 173         pdev = dev->parent.dev;
 174         if (state && !pdev) {
 175                 pdev = system_if_get_parent(dev);
 176                 if (pdev)
 177                         device_add_user(&dev->parent, pdev);
 178         }
 179
 180         if (pdev) {
 181                 if (state)
 182                         ret = device_claim(&dev->parent);
 183                 else
 184                         device_release(&dev->parent);
 185
 186                 if (ret < 0)
 187                         return ret;
 188         }
 189         return set_device_state(dev, state);
 190 }
 191
 192 static struct device *
 193 simple_device_create(const char *name, struct device_type *devtype,
 194                      struct blob_attr *attr)
 195 {
 196         struct blob_attr *tb[__DEV_ATTR_MAX];
 197         struct device *dev = NULL;
 198
 199         /* device type is unused for simple devices */
 200         devtype = NULL;
 201
 202         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb, blob_data(attr), blob_len(attr));
 203         dev = device_get(name, true);
 204         if (!dev)
 205                 return NULL;
 206
 207         dev->set_state = simple_device_set_state;
 208         device_init_settings(dev, tb);
 209
 210         return dev;
 211 }
 212
 213 static void simple_device_free(struct device *dev)
 214 {
 215         if (dev->parent.dev)
 216                 device_remove_user(&dev->parent);
 217         free(dev);
 218 }
 219
 220 struct device_type simple_device_type = {
 221         .name = "Network device",
 222         .config_params = &device_attr_list,
 223
 224         .create = simple_device_create,
 225         .check_state = system_if_check,
 226         .free = simple_device_free,
 227 };
 228
 229 void
 230 device_merge_settings(struct device *dev, struct device_settings *n)
 231 {
 232         struct device_settings *os = &dev->orig_settings;
 233         struct device_settings *s = &dev->settings;
 234
 235         memset(n, 0, sizeof(*n));
 236         n->mtu = s->flags & DEV_OPT_MTU ? s->mtu : os->mtu;
 237         n->mtu6 = s->flags & DEV_OPT_MTU6 ? s->mtu6 : os->mtu6;
 238         n->txqueuelen = s->flags & DEV_OPT_TXQUEUELEN ?
 239                 s->txqueuelen : os->txqueuelen;
 240         memcpy(n->macaddr,
 241                 (s->flags & (DEV_OPT_MACADDR|DEV_OPT_DEFAULT_MACADDR) ? s->macaddr : os->macaddr),
 242                 sizeof(n->macaddr));
 243         n->ipv6 = s->flags & DEV_OPT_IPV6 ? s->ipv6 : os->ipv6;
 244         n->ip6segmentrouting = s->flags & DEV_OPT_IP6SEGMENTROUTING ? s->ip6segmentrouting : os->ip6segmentrouting;
 245         n->promisc = s->flags & DEV_OPT_PROMISC ? s->promisc : os->promisc;
 246         n->rpfilter = s->flags & DEV_OPT_RPFILTER ? s->rpfilter : os->rpfilter;
 247         n->acceptlocal = s->flags & DEV_OPT_ACCEPTLOCAL ? s->acceptlocal : os->acceptlocal;
 248         n->igmpversion = s->flags & DEV_OPT_IGMPVERSION ? s->igmpversion : os->igmpversion;
 249         n->mldversion = s->flags & DEV_OPT_MLDVERSION ? s->mldversion : os->mldversion;
 250         n->neigh4reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 251                 s->neigh4reachabletime : os->neigh4reachabletime;
 252         n->neigh6reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 253                 s->neigh6reachabletime : os->neigh6reachabletime;
 254         n->neigh4gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 255                 s->neigh4gcstaletime : os->neigh4gcstaletime;
 256         n->neigh6gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 257                 s->neigh6gcstaletime : os->neigh6gcstaletime;
 258         n->neigh4locktime = s->flags & DEV_OPT_NEIGHLOCKTIME ?
 259                 s->neigh4locktime : os->neigh4locktime;
 260         n->dadtransmits = s->flags & DEV_OPT_DADTRANSMITS ?
 261                 s->dadtransmits : os->dadtransmits;
 262         n->multicast = s->flags & DEV_OPT_MULTICAST ?
 263                 s->multicast : os->multicast;
 264         n->multicast_to_unicast = s->multicast_to_unicast;
 265         n->multicast_router = s->multicast_router;
 266         n->multicast_fast_leave = s->multicast_fast_leave;
 267         n->learning = s->learning;
 268         n->unicast_flood = s->unicast_flood;
 269         n->sendredirects = s->flags & DEV_OPT_SENDREDIRECTS ?
 270                 s->sendredirects : os->sendredirects;
 271         n->drop_v4_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST ?
 272                 s->drop_v4_unicast_in_l2_multicast : os->drop_v4_unicast_in_l2_multicast;
 273         n->drop_v6_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST ?
 274                 s->drop_v6_unicast_in_l2_multicast : os->drop_v6_unicast_in_l2_multicast;
 275         n->drop_gratuitous_arp = s->flags & DEV_OPT_DROP_GRATUITOUS_ARP ?
 276                 s->drop_gratuitous_arp : os->drop_gratuitous_arp;
 277         n->drop_unsolicited_na = s->flags & DEV_OPT_DROP_UNSOLICITED_NA ?
 278                 s->drop_unsolicited_na : os->drop_unsolicited_na;
 279         n->arp_accept = s->flags & DEV_OPT_ARP_ACCEPT ?
 280                 s->arp_accept : os->arp_accept;
 281         n->auth = s->flags & DEV_OPT_AUTH ? s->auth : os->auth;
 282         n->speed = s->flags & DEV_OPT_SPEED ? s->speed : os->speed;
 283         n->duplex = s->flags & DEV_OPT_DUPLEX ? s->duplex : os->duplex;
 284         n->flags = s->flags | os->flags | os->valid_flags;
 285 }
 286
 287 static bool device_fill_vlan_range(struct device_vlan_range *r, const char *val)
 288 {
 289         unsigned long cur_start, cur_end;
 290         char *sep;
 291
 292         cur_start = strtoul(val, &sep, 0);
 293         cur_end = cur_start;
 294
 295         if (*sep == '-')
 296                 cur_end = strtoul(sep + 1, &sep, 0);
 297         if (*sep || cur_end < cur_start)
 298                 return false;
 299
 300         r->start = cur_start;
 301         r->end = cur_end;
 302
 303         return true;
 304 }
 305
 306 static void
 307 device_set_extra_vlans(struct device *dev, struct blob_attr *data)
 308 {
 309         struct blob_attr *cur;
 310         int n_vlans;
 311         size_t rem;
 312
 313         dev->n_extra_vlan = 0;
 314         if (!data)
 315                 return;
 316
 317         n_vlans = blobmsg_check_array(data, BLOBMSG_TYPE_STRING);
 318         if (n_vlans < 1)
 319                 return;
 320
 321         dev->extra_vlan = realloc(dev->extra_vlan, n_vlans * sizeof(*dev->extra_vlan));
 322         blobmsg_for_each_attr(cur, data, rem)
 323                 if (device_fill_vlan_range(&dev->extra_vlan[dev->n_extra_vlan],
 324                                            blobmsg_get_string(cur)))
 325                         dev->n_extra_vlan++;
 326 }
 327
 328 void
 329 device_init_settings(struct device *dev, struct blob_attr **tb)
 330 {
 331         struct device_settings *s = &dev->settings;
 332         struct blob_attr *cur;
 333         struct ether_addr *ea;
 334         bool disabled = false;
 335
 336         s->flags = 0;
 337         if ((cur = tb[DEV_ATTR_ENABLED]))
 338                 disabled = !blobmsg_get_bool(cur);
 339
 340         if ((cur = tb[DEV_ATTR_MTU]) && blobmsg_get_u32(cur) >= 68) {
 341                 s->mtu = blobmsg_get_u32(cur);
 342                 s->flags |= DEV_OPT_MTU;
 343         }
 344
 345         if ((cur = tb[DEV_ATTR_MTU6]) && blobmsg_get_u32(cur) >= 1280) {
 346                 s->mtu6 = blobmsg_get_u32(cur);
 347                 s->flags |= DEV_OPT_MTU6;
 348         }
 349
 350         if ((cur = tb[DEV_ATTR_TXQUEUELEN])) {
 351                 s->txqueuelen = blobmsg_get_u32(cur);
 352                 s->flags |= DEV_OPT_TXQUEUELEN;
 353         }
 354
 355         if ((cur = tb[DEV_ATTR_MACADDR])) {
 356                 ea = ether_aton(blobmsg_data(cur));
 357                 if (ea) {
 358                         memcpy(s->macaddr, ea, 6);
 359                         s->flags |= DEV_OPT_MACADDR;
 360                 }
 361         }
 362
 363         if ((cur = tb[DEV_ATTR_IPV6])) {
 364                 s->ipv6 = blobmsg_get_bool(cur);
 365                 s->flags |= DEV_OPT_IPV6;
 366         }
 367
 368         if ((cur = tb[DEV_ATTR_IP6SEGMENTROUTING])) {
 369                 s->ip6segmentrouting = blobmsg_get_bool(cur);
 370                 s->flags |= DEV_OPT_IP6SEGMENTROUTING;
 371         }
 372
 373         if ((cur = tb[DEV_ATTR_PROMISC])) {
 374                 s->promisc = blobmsg_get_bool(cur);
 375                 s->flags |= DEV_OPT_PROMISC;
 376         }
 377
 378         if ((cur = tb[DEV_ATTR_RPFILTER])) {
 379                 if (system_resolve_rpfilter(blobmsg_data(cur), &s->rpfilter))
 380                         s->flags |= DEV_OPT_RPFILTER;
 381                 else
 382                         DPRINTF("Failed to resolve rpfilter: %s\n", (char *) blobmsg_data(cur));
 383         }
 384
 385         if ((cur = tb[DEV_ATTR_ACCEPTLOCAL])) {
 386                 s->acceptlocal = blobmsg_get_bool(cur);
 387                 s->flags |= DEV_OPT_ACCEPTLOCAL;
 388         }
 389
 390         if ((cur = tb[DEV_ATTR_IGMPVERSION])) {
 391                 s->igmpversion = blobmsg_get_u32(cur);
 392                 if (s->igmpversion >= 1 && s->igmpversion <= 3)
 393                         s->flags |= DEV_OPT_IGMPVERSION;
 394                 else
 395                         DPRINTF("Failed to resolve igmpversion: %d\n", blobmsg_get_u32(cur));
 396         }
 397
 398         if ((cur = tb[DEV_ATTR_MLDVERSION])) {
 399                 s->mldversion = blobmsg_get_u32(cur);
 400                 if (s->mldversion >= 1 && s->mldversion <= 2)
 401                         s->flags |= DEV_OPT_MLDVERSION;
 402                 else
 403                         DPRINTF("Failed to resolve mldversion: %d\n", blobmsg_get_u32(cur));
 404         }
 405
 406         if ((cur = tb[DEV_ATTR_NEIGHREACHABLETIME])) {
 407                 s->neigh6reachabletime = s->neigh4reachabletime = blobmsg_get_u32(cur);
 408                 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
 409         }
 410
 411         if ((cur = tb[DEV_ATTR_NEIGHGCSTALETIME])) {
 412                 s->neigh6gcstaletime = s->neigh4gcstaletime = blobmsg_get_u32(cur);
 413                 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
 414         }
 415
 416         if ((cur = tb[DEV_ATTR_NEIGHLOCKTIME])) {
 417                 s->neigh4locktime = blobmsg_get_u32(cur);
 418                 s->flags |= DEV_OPT_NEIGHLOCKTIME;
 419         }
 420
 421         if ((cur = tb[DEV_ATTR_DADTRANSMITS])) {
 422                 s->dadtransmits = blobmsg_get_u32(cur);
 423                 s->flags |= DEV_OPT_DADTRANSMITS;
 424         }
 425
 426         if ((cur = tb[DEV_ATTR_MULTICAST_TO_UNICAST])) {
 427                 s->multicast_to_unicast = blobmsg_get_bool(cur);
 428                 s->flags |= DEV_OPT_MULTICAST_TO_UNICAST;
 429         }
 430
 431         if ((cur = tb[DEV_ATTR_MULTICAST_ROUTER])) {
 432                 s->multicast_router = blobmsg_get_u32(cur);
 433                 if (s->multicast_router <= 2)
 434                         s->flags |= DEV_OPT_MULTICAST_ROUTER;
 435                 else
 436                         DPRINTF("Invalid value: %d - (Use 0: never, 1: learn, 2: always)\n", blobmsg_get_u32(cur));
 437         }
 438
 439         if ((cur = tb[DEV_ATTR_MULTICAST_FAST_LEAVE])) {
 440                 s->multicast_fast_leave = blobmsg_get_bool(cur);
 441                 s->flags |= DEV_OPT_MULTICAST_FAST_LEAVE;
 442         }
 443
 444         if ((cur = tb[DEV_ATTR_MULTICAST])) {
 445                 s->multicast = blobmsg_get_bool(cur);
 446                 s->flags |= DEV_OPT_MULTICAST;
 447         }
 448
 449         if ((cur = tb[DEV_ATTR_LEARNING])) {
 450                 s->learning = blobmsg_get_bool(cur);
 451                 s->flags |= DEV_OPT_LEARNING;
 452         }
 453
 454         if ((cur = tb[DEV_ATTR_UNICAST_FLOOD])) {
 455                 s->unicast_flood = blobmsg_get_bool(cur);
 456                 s->flags |= DEV_OPT_UNICAST_FLOOD;
 457         }
 458
 459         if ((cur = tb[DEV_ATTR_SENDREDIRECTS])) {
 460                 s->sendredirects = blobmsg_get_bool(cur);
 461                 s->flags |= DEV_OPT_SENDREDIRECTS;
 462         }
 463
 464         if ((cur = tb[DEV_ATTR_ISOLATE])) {
 465                 s->isolate = blobmsg_get_bool(cur);
 466                 s->flags |= DEV_OPT_ISOLATE;
 467         }
 468
 469         if ((cur = tb[DEV_ATTR_DROP_V4_UNICAST_IN_L2_MULTICAST])) {
 470                 s->drop_v4_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 471                 s->flags |= DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST;
 472         }
 473
 474         if ((cur = tb[DEV_ATTR_DROP_V6_UNICAST_IN_L2_MULTICAST])) {
 475                 s->drop_v6_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 476                 s->flags |= DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST;
 477         }
 478
 479         if ((cur = tb[DEV_ATTR_DROP_GRATUITOUS_ARP])) {
 480                 s->drop_gratuitous_arp = blobmsg_get_bool(cur);
 481                 s->flags |= DEV_OPT_DROP_GRATUITOUS_ARP;
 482         }
 483
 484         if ((cur = tb[DEV_ATTR_DROP_UNSOLICITED_NA])) {
 485                 s->drop_unsolicited_na = blobmsg_get_bool(cur);
 486                 s->flags |= DEV_OPT_DROP_UNSOLICITED_NA;
 487         }
 488
 489         if ((cur = tb[DEV_ATTR_ARP_ACCEPT])) {
 490                 s->arp_accept = blobmsg_get_bool(cur);
 491                 s->flags |= DEV_OPT_ARP_ACCEPT;
 492         }
 493
 494         if ((cur = tb[DEV_ATTR_AUTH])) {
 495                 s->auth = blobmsg_get_bool(cur);
 496                 s->flags |= DEV_OPT_AUTH;
 497         }
 498
 499         if ((cur = tb[DEV_ATTR_SPEED])) {
 500                 s->speed = blobmsg_get_u32(cur);
 501                 s->flags |= DEV_OPT_SPEED;
 502         }
 503
 504         if ((cur = tb[DEV_ATTR_DUPLEX])) {
 505                 s->duplex = blobmsg_get_bool(cur);
 506                 s->flags |= DEV_OPT_DUPLEX;
 507         }
 508         device_set_extra_vlans(dev, tb[DEV_ATTR_VLAN]);
 509         device_set_disabled(dev, disabled);
 510 }
 511
 512 static void __init dev_init(void)
 513 {
 514         avl_init(&devices, avl_strcmp, true, NULL);
 515 }
 516
 517 static int device_release_cb(void *ctx, struct safe_list *list)
 518 {
 519         struct device_user *dep = container_of(list, struct device_user, list);
 520
 521         if (!dep->dev || !dep->claimed)
 522                 return 0;
 523
 524         device_release(dep);
 525         return 0;
 526 }
 527
 528 static int device_broadcast_cb(void *ctx, struct safe_list *list)
 529 {
 530         struct device_user *dep = container_of(list, struct device_user, list);
 531         int *ev = ctx;
 532
 533         /* device might have been removed by an earlier callback */
 534         if (!dep->dev)
 535                 return 0;
 536
 537         if (dep->cb)
 538                 dep->cb(dep, *ev);
 539         return 0;
 540 }
 541
 542 void device_broadcast_event(struct device *dev, enum device_event ev)
 543 {
 544         int dev_ev = ev;
 545
 546         safe_list_for_each(&dev->aliases, device_broadcast_cb, &dev_ev);
 547         safe_list_for_each(&dev->users, device_broadcast_cb, &dev_ev);
 548 }
 549
 550 static void
 551 device_fill_default_settings(struct device *dev)
 552 {
 553         struct device_settings *s = &dev->settings;
 554         struct ether_addr *ea;
 555
 556         if (!(s->flags & DEV_OPT_MACADDR)) {
 557                 ea = config_get_default_macaddr(dev->ifname);
 558                 if (ea) {
 559                         memcpy(s->macaddr, ea, 6);
 560                         s->flags |= DEV_OPT_DEFAULT_MACADDR;
 561                 }
 562         }
 563 }
 564
 565 int device_claim(struct device_user *dep)
 566 {
 567         struct device *dev = dep->dev;
 568         int ret = 0;
 569
 570         if (dep->claimed)
 571                 return 0;
 572
 573         if (!dev)
 574                 return -1;
 575
 576         dep->claimed = true;
 577         D(DEVICE, "Claim %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active + 1);
 578         if (++dev->active != 1)
 579                 return 0;
 580
 581         device_broadcast_event(dev, DEV_EVENT_SETUP);
 582         device_fill_default_settings(dev);
 583         if (dev->external) {
 584                 /* Get ifindex for external claimed devices so a valid   */
 585                 /* ifindex is in place avoiding possible race conditions */
 586                 device_set_ifindex(dev, system_if_resolve(dev));
 587                 if (!dev->ifindex)
 588                         ret = -1;
 589
 590                 system_if_get_settings(dev, &dev->orig_settings);
 591         } else
 592                 ret = dev->set_state(dev, true);
 593
 594         if (ret == 0)
 595                 device_broadcast_event(dev, DEV_EVENT_UP);
 596         else {
 597                 D(DEVICE, "claim %s %s failed: %d\n", dev->type->name, dev->ifname, ret);
 598                 dev->active = 0;
 599                 dep->claimed = false;
 600         }
 601
 602         return ret;
 603 }
 604
 605 void device_release(struct device_user *dep)
 606 {
 607         struct device *dev = dep->dev;
 608
 609         if (!dep->claimed)
 610                 return;
 611
 612         dep->claimed = false;
 613         dev->active--;
 614         D(DEVICE, "Release %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active);
 615         assert(dev->active >= 0);
 616
 617         if (dev->active)
 618                 return;
 619
 620         device_broadcast_event(dev, DEV_EVENT_TEARDOWN);
 621         if (!dev->external)
 622                 dev->set_state(dev, false);
 623
 624         if (dev->active)
 625                 return;
 626
 627         device_broadcast_event(dev, DEV_EVENT_DOWN);
 628 }
 629
 630 int device_check_state(struct device *dev)
 631 {
 632         if (!dev->type->check_state)
 633                 return simple_device_type.check_state(dev);
 634
 635         return dev->type->check_state(dev);
 636 }
 637
 638 int device_init_virtual(struct device *dev, struct device_type *type, const char *name)
 639 {
 640         assert(dev);
 641         assert(type);
 642
 643         D(DEVICE, "Initialize device '%s'\n", name ? name : "");
 644         INIT_SAFE_LIST(&dev->users);
 645         INIT_SAFE_LIST(&dev->aliases);
 646         dev->type = type;
 647
 648         if (name) {
 649                 int ret;
 650
 651                 ret = device_set_ifname(dev, name);
 652                 if (ret < 0)
 653                         return ret;
 654         }
 655
 656         if (!dev->set_state)
 657                 dev->set_state = set_device_state;
 658
 659         return 0;
 660 }
 661
 662 int device_init(struct device *dev, struct device_type *type, const char *ifname)
 663 {
 664         int ret;
 665
 666         ret = device_init_virtual(dev, type, ifname);
 667         if (ret < 0)
 668                 return ret;
 669
 670         dev->avl.key = dev->ifname;
 671
 672         ret = avl_insert(&devices, &dev->avl);
 673         if (ret < 0)
 674                 return ret;
 675
 676         system_if_clear_state(dev);
 677
 678         return 0;
 679 }
 680
 681 static struct device *
 682 device_create_default(const char *name, bool external)
 683 {
 684         struct device *dev;
 685
 686         if (!external && system_if_force_external(name))
 687                 return NULL;
 688
 689         D(DEVICE, "Create simple device '%s'\n", name);
 690         dev = calloc(1, sizeof(*dev));
 691         if (!dev)
 692                 return NULL;
 693
 694         dev->external = external;
 695         dev->set_state = simple_device_set_state;
 696
 697         if (device_init(dev, &simple_device_type, name) < 0) {
 698                 device_cleanup(dev);
 699                 free(dev);
 700                 return NULL;
 701         }
 702
 703         dev->default_config = true;
 704         if (external)
 705                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 706
 707         device_check_state(dev);
 708
 709         return dev;
 710 }
 711
 712 struct device *
 713 device_find(const char *name)
 714 {
 715         struct device *dev;
 716
 717         return avl_find_element(&devices, name, dev, avl);
 718 }
 719
 720 struct device *
 721 __device_get(const char *name, int create, bool check_vlan)
 722 {
 723         struct device *dev;
 724
 725         dev = avl_find_element(&devices, name, dev, avl);
 726
 727         if (!dev && check_vlan && strchr(name, '.'))
 728                 return get_vlan_device_chain(name, create);
 729
 730         if (name[0] == '@')
 731                 return device_alias_get(name + 1);
 732
 733         if (dev) {
 734                 if (create > 1 && !dev->external) {
 735                         system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 736                         dev->external = true;
 737                         device_set_present(dev, true);
 738                 }
 739                 return dev;
 740         }
 741
 742         if (!create)
 743                 return NULL;
 744
 745         return device_create_default(name, create > 1);
 746 }
 747
 748 static void
 749 device_delete(struct device *dev)
 750 {
 751         if (!dev->avl.key)
 752                 return;
 753
 754         D(DEVICE, "Delete device '%s' from list\n", dev->ifname);
 755         avl_delete(&devices, &dev->avl);
 756         dev->avl.key = NULL;
 757 }
 758
 759 static int device_cleanup_cb(void *ctx, struct safe_list *list)
 760 {
 761         struct device_user *dep = container_of(list, struct device_user, list);
 762         if (dep->cb)
 763                 dep->cb(dep, DEV_EVENT_REMOVE);
 764
 765         device_release(dep);
 766         return 0;
 767 }
 768
 769 void device_cleanup(struct device *dev)
 770 {
 771         D(DEVICE, "Clean up device '%s'\n", dev->ifname);
 772         safe_list_for_each(&dev->users, device_cleanup_cb, NULL);
 773         safe_list_for_each(&dev->aliases, device_cleanup_cb, NULL);
 774         device_delete(dev);
 775 }
 776
 777 static void __device_set_present(struct device *dev, bool state)
 778 {
 779         if (dev->present == state)
 780                 return;
 781
 782         dev->present = state;
 783         device_broadcast_event(dev, state ? DEV_EVENT_ADD : DEV_EVENT_REMOVE);
 784 }
 785
 786 void
 787 device_refresh_present(struct device *dev)
 788 {
 789         bool state = dev->sys_present;
 790
 791         if (dev->disabled || dev->deferred)
 792                 state = false;
 793
 794         __device_set_present(dev, state);
 795 }
 796
 797 void
 798 device_set_auth_status(struct device *dev, bool value)
 799 {
 800         if (dev->auth_status == value)
 801                 return;
 802
 803         dev->auth_status = value;
 804         if (!dev->present)
 805                 return;
 806
 807         if (dev->auth_status) {
 808                 device_broadcast_event(dev, DEV_EVENT_AUTH_UP);
 809                 return;
 810         }
 811
 812         device_broadcast_event(dev, DEV_EVENT_LINK_DOWN);
 813         if (!dev->link_active)
 814                 return;
 815
 816         device_broadcast_event(dev, DEV_EVENT_LINK_UP);
 817 }
 818
 819 void device_set_present(struct device *dev, bool state)
 820 {
 821         if (dev->sys_present == state)
 822                 return;
 823
 824         D(DEVICE, "%s '%s' %s present\n", dev->type->name, dev->ifname, state ? "is now" : "is no longer" );
 825         dev->sys_present = state;
 826         device_refresh_present(dev);
 827         if (!state)
 828                 safe_list_for_each(&dev->users, device_release_cb, NULL);
 829 }
 830
 831 void device_set_link(struct device *dev, bool state)
 832 {
 833         if (dev->link_active == state)
 834                 return;
 835
 836         netifd_log_message(L_NOTICE, "%s '%s' link is %s\n", dev->type->name, dev->ifname, state ? "up" : "down" );
 837
 838         dev->link_active = state;
 839         if (!state)
 840                 dev->auth_status = false;
 841         device_broadcast_event(dev, state ? DEV_EVENT_LINK_UP : DEV_EVENT_LINK_DOWN);
 842 }
 843
 844 void device_set_ifindex(struct device *dev, int ifindex)
 845 {
 846         if (dev->ifindex == ifindex)
 847                 return;
 848
 849         dev->ifindex = ifindex;
 850         device_broadcast_event(dev, DEV_EVENT_UPDATE_IFINDEX);
 851 }
 852
 853 int device_set_ifname(struct device *dev, const char *name)
 854 {
 855         int ret = 0;
 856
 857         if (!strcmp(dev->ifname, name))
 858                 return 0;
 859
 860         if (strlen(name) > sizeof(dev->ifname) - 1)
 861                 return -1;
 862
 863         if (dev->avl.key)
 864                 avl_delete(&devices, &dev->avl);
 865
 866         strcpy(dev->ifname, name);
 867
 868         if (dev->avl.key)
 869                 ret = avl_insert(&devices, &dev->avl);
 870
 871         if (ret == 0)
 872                 device_broadcast_event(dev, DEV_EVENT_UPDATE_IFNAME);
 873
 874         return ret;
 875 }
 876
 877 static int device_refcount(struct device *dev)
 878 {
 879         struct list_head *list;
 880         int count = 0;
 881
 882         list_for_each(list, &dev->users.list)
 883                 count++;
 884
 885         list_for_each(list, &dev->aliases.list)
 886                 count++;
 887
 888         return count;
 889 }
 890
 891 static void
 892 __device_add_user(struct device_user *dep, struct device *dev)
 893 {
 894         struct safe_list *head;
 895
 896         dep->dev = dev;
 897
 898         if (dep->alias)
 899                 head = &dev->aliases;
 900         else
 901                 head = &dev->users;
 902
 903         safe_list_add(&dep->list, head);
 904         D(DEVICE, "Add user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
 905
 906         if (dep->cb && dev->present) {
 907                 dep->cb(dep, DEV_EVENT_ADD);
 908                 if (dev->active)
 909                         dep->cb(dep, DEV_EVENT_UP);
 910
 911                 if (dev->link_active)
 912                         dep->cb(dep, DEV_EVENT_LINK_UP);
 913         }
 914 }
 915
 916 void device_add_user(struct device_user *dep, struct device *dev)
 917 {
 918         if (dep->dev == dev)
 919                 return;
 920
 921         if (dep->dev)
 922                 device_remove_user(dep);
 923
 924         if (!dev)
 925                 return;
 926
 927         __device_add_user(dep, dev);
 928 }
 929
 930 static void
 931 device_free(struct device *dev)
 932 {
 933         __devlock++;
 934         free(dev->config);
 935         device_cleanup(dev);
 936         free(dev->extra_vlan);
 937         dev->type->free(dev);
 938         __devlock--;
 939 }
 940
 941 static void
 942 __device_free_unused(struct uloop_timeout *timeout)
 943 {
 944         struct device *dev, *tmp;
 945
 946         avl_for_each_element_safe(&devices, dev, avl, tmp) {
 947                 if (!safe_list_empty(&dev->users) ||
 948                         !safe_list_empty(&dev->aliases) ||
 949                         dev->current_config)
 950                         continue;
 951
 952                 device_free(dev);
 953         }
 954 }
 955
 956 void device_free_unused(void)
 957 {
 958         static struct uloop_timeout free_timer = {
 959                 .cb = __device_free_unused,
 960         };
 961
 962         uloop_timeout_set(&free_timer, 1);
 963 }
 964
 965 void device_remove_user(struct device_user *dep)
 966 {
 967         struct device *dev = dep->dev;
 968
 969         if (!dep->dev)
 970                 return;
 971
 972         dep->hotplug = false;
 973         if (dep->claimed)
 974                 device_release(dep);
 975
 976         safe_list_del(&dep->list);
 977         dep->dev = NULL;
 978         D(DEVICE, "Remove user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
 979         device_free_unused();
 980 }
 981
 982 void
 983 device_init_pending(void)
 984 {
 985         struct device *dev, *tmp;
 986
 987         avl_for_each_element_safe(&devices, dev, avl, tmp) {
 988                 if (!dev->config_pending)
 989                         continue;
 990
 991                 dev->type->config_init(dev);
 992                 dev->config_pending = false;
 993                 device_check_state(dev);
 994         }
 995 }
 996
 997 bool
 998 device_check_ip6segmentrouting(void)
 999 {
1000         struct device *dev;
1001         bool ip6segmentrouting = false;
1002
1003         avl_for_each_element(&devices, dev, avl)
1004                 ip6segmentrouting |= dev->settings.ip6segmentrouting;
1005
1006         return ip6segmentrouting;
1007 }
1008
1009 static enum dev_change_type
1010 device_set_config(struct device *dev, struct device_type *type,
1011                   struct blob_attr *attr)
1012 {
1013         struct blob_attr *tb[__DEV_ATTR_MAX];
1014         const struct uci_blob_param_list *cfg = type->config_params;
1015
1016         if (type != dev->type)
1017                 return DEV_CONFIG_RECREATE;
1018
1019         if (dev->type->reload)
1020                 return dev->type->reload(dev, attr);
1021
1022         if (uci_blob_check_equal(dev->config, attr, cfg))
1023                 return DEV_CONFIG_NO_CHANGE;
1024
1025         if (cfg == &device_attr_list) {
1026                 memset(tb, 0, sizeof(tb));
1027
1028                 if (attr)
1029                         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb,
1030                                 blob_data(attr), blob_len(attr));
1031
1032                 device_init_settings(dev, tb);
1033                 return DEV_CONFIG_RESTART;
1034         } else
1035                 return DEV_CONFIG_RECREATE;
1036 }
1037
1038 enum dev_change_type
1039 device_apply_config(struct device *dev, struct device_type *type,
1040                     struct blob_attr *config)
1041 {
1042         enum dev_change_type change;
1043
1044         change = device_set_config(dev, type, config);
1045         if (dev->external) {
1046                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1047                 change = DEV_CONFIG_APPLIED;
1048         }
1049
1050         switch (change) {
1051                 case DEV_CONFIG_RESTART:
1052                 case DEV_CONFIG_APPLIED:
1053                         D(DEVICE, "Device '%s': config applied\n", dev->ifname);
1054                         config = blob_memdup(config);
1055                         free(dev->config);
1056                         dev->config = config;
1057                         if (change == DEV_CONFIG_RESTART && dev->present) {
1058                                 int ret = 0;
1059
1060                                 device_set_present(dev, false);
1061                                 if (dev->active && !dev->external) {
1062                                         ret = dev->set_state(dev, false);
1063                                         if (!ret)
1064                                                 ret = dev->set_state(dev, true);
1065                                 }
1066                                 if (!ret)
1067                                         device_set_present(dev, true);
1068                         }
1069                         break;
1070                 case DEV_CONFIG_NO_CHANGE:
1071                         D(DEVICE, "Device '%s': no configuration change\n", dev->ifname);
1072                         break;
1073                 case DEV_CONFIG_RECREATE:
1074                         break;
1075         }
1076
1077         return change;
1078 }
1079
1080 static void
1081 device_replace(struct device *dev, struct device *odev)
1082 {
1083         struct device_user *dep;
1084
1085         __devlock++;
1086         if (odev->present)
1087                 device_set_present(odev, false);
1088
1089         while (!list_empty(&odev->users.list)) {
1090                 dep = list_first_entry(&odev->users.list, struct device_user, list.list);
1091                 device_release(dep);
1092                 if (!dep->dev)
1093                         continue;
1094
1095                 safe_list_del(&dep->list);
1096                 __device_add_user(dep, dev);
1097         }
1098         __devlock--;
1099
1100         device_free(odev);
1101 }
1102
1103 void
1104 device_reset_config(void)
1105 {
1106         struct device *dev;
1107
1108         avl_for_each_element(&devices, dev, avl)
1109                 dev->current_config = false;
1110 }
1111
1112 void
1113 device_reset_old(void)
1114 {
1115         struct device *dev, *tmp, *ndev;
1116
1117         avl_for_each_element_safe(&devices, dev, avl, tmp) {
1118                 if (dev->current_config || dev->default_config)
1119                         continue;
1120
1121                 if (dev->type != &simple_device_type)
1122                         continue;
1123
1124                 ndev = device_create_default(dev->ifname, dev->external);
1125                 if (!ndev)
1126                         continue;
1127
1128                 device_replace(ndev, dev);
1129         }
1130 }
1131
1132 struct device *
1133 device_create(const char *name, struct device_type *type,
1134               struct blob_attr *config)
1135 {
1136         struct device *odev = NULL, *dev;
1137         enum dev_change_type change;
1138
1139         odev = device_find(name);
1140         if (odev) {
1141                 odev->current_config = true;
1142                 change = device_apply_config(odev, type, config);
1143                 switch (change) {
1144                 case DEV_CONFIG_RECREATE:
1145                         D(DEVICE, "Device '%s': recreate device\n", odev->ifname);
1146                         device_delete(odev);
1147                         break;
1148                 default:
1149                         return odev;
1150                 }
1151         } else
1152                 D(DEVICE, "Create new device '%s' (%s)\n", name, type->name);
1153
1154         config = blob_memdup(config);
1155         if (!config)
1156                 return NULL;
1157
1158         dev = type->create(name, type, config);
1159         if (!dev)
1160                 return NULL;
1161
1162         dev->current_config = true;
1163         dev->config = config;
1164         if (odev)
1165                 device_replace(dev, odev);
1166
1167         if (!config_init && dev->config_pending) {
1168                 type->config_init(dev);
1169                 dev->config_pending = false;
1170         }
1171
1172         device_check_state(dev);
1173
1174         return dev;
1175 }
1176
1177 void
1178 device_dump_status(struct blob_buf *b, struct device *dev)
1179 {
1180         struct device_settings st;
1181         void *c, *s;
1182
1183         if (!dev) {
1184                 avl_for_each_element(&devices, dev, avl) {
1185                         if (!dev->present)
1186                                 continue;
1187                         c = blobmsg_open_table(b, dev->ifname);
1188                         device_dump_status(b, dev);
1189                         blobmsg_close_table(b, c);
1190                 }
1191
1192                 return;
1193         }
1194
1195         blobmsg_add_u8(b, "external", dev->external);
1196         blobmsg_add_u8(b, "present", dev->present);
1197         blobmsg_add_string(b, "type", dev->type->name);
1198
1199         if (!dev->present)
1200                 return;
1201
1202         blobmsg_add_u8(b, "up", !!dev->active);
1203         blobmsg_add_u8(b, "carrier", !!dev->link_active);
1204         blobmsg_add_u8(b, "auth_status", !!dev->auth_status);
1205
1206         if (dev->type->dump_info)
1207                 dev->type->dump_info(dev, b);
1208         else
1209                 system_if_dump_info(dev, b);
1210
1211         if (dev->active) {
1212                 device_merge_settings(dev, &st);
1213                 if (st.flags & DEV_OPT_MTU)
1214                         blobmsg_add_u32(b, "mtu", st.mtu);
1215                 if (st.flags & DEV_OPT_MTU6)
1216                         blobmsg_add_u32(b, "mtu6", st.mtu6);
1217                 if (st.flags & DEV_OPT_MACADDR)
1218                         blobmsg_add_string(b, "macaddr", format_macaddr(st.macaddr));
1219                 if (st.flags & DEV_OPT_TXQUEUELEN)
1220                         blobmsg_add_u32(b, "txqueuelen", st.txqueuelen);
1221                 if (st.flags & DEV_OPT_IPV6)
1222                         blobmsg_add_u8(b, "ipv6", st.ipv6);
1223                 if (st.flags & DEV_OPT_IP6SEGMENTROUTING)
1224                         blobmsg_add_u8(b, "ip6segmentrouting", st.ip6segmentrouting);
1225                 if (st.flags & DEV_OPT_PROMISC)
1226                         blobmsg_add_u8(b, "promisc", st.promisc);
1227                 if (st.flags & DEV_OPT_RPFILTER)
1228                         blobmsg_add_u32(b, "rpfilter", st.rpfilter);
1229                 if (st.flags & DEV_OPT_ACCEPTLOCAL)
1230                         blobmsg_add_u8(b, "acceptlocal", st.acceptlocal);
1231                 if (st.flags & DEV_OPT_IGMPVERSION)
1232                         blobmsg_add_u32(b, "igmpversion", st.igmpversion);
1233                 if (st.flags & DEV_OPT_MLDVERSION)
1234                         blobmsg_add_u32(b, "mldversion", st.mldversion);
1235                 if (st.flags & DEV_OPT_NEIGHREACHABLETIME) {
1236                         blobmsg_add_u32(b, "neigh4reachabletime", st.neigh4reachabletime);
1237                         blobmsg_add_u32(b, "neigh6reachabletime", st.neigh6reachabletime);
1238                 }
1239                 if (st.flags & DEV_OPT_NEIGHGCSTALETIME) {
1240                         blobmsg_add_u32(b, "neigh4gcstaletime", st.neigh4gcstaletime);
1241                         blobmsg_add_u32(b, "neigh6gcstaletime", st.neigh6gcstaletime);
1242                 }
1243                 if (st.flags & DEV_OPT_NEIGHLOCKTIME)
1244                         blobmsg_add_u32(b, "neigh4locktime", st.neigh4locktime);
1245                 if (st.flags & DEV_OPT_DADTRANSMITS)
1246                         blobmsg_add_u32(b, "dadtransmits", st.dadtransmits);
1247                 if (st.flags & DEV_OPT_MULTICAST_TO_UNICAST)
1248                         blobmsg_add_u8(b, "multicast_to_unicast", st.multicast_to_unicast);
1249                 if (st.flags & DEV_OPT_MULTICAST_ROUTER)
1250                         blobmsg_add_u32(b, "multicast_router", st.multicast_router);
1251                 if (st.flags & DEV_OPT_MULTICAST_FAST_LEAVE)
1252                         blobmsg_add_u8(b, "multicast_fast_leave", st.multicast_fast_leave);
1253                 if (st.flags & DEV_OPT_MULTICAST)
1254                         blobmsg_add_u8(b, "multicast", st.multicast);
1255                 if (st.flags & DEV_OPT_LEARNING)
1256                         blobmsg_add_u8(b, "learning", st.learning);
1257                 if (st.flags & DEV_OPT_UNICAST_FLOOD)
1258                         blobmsg_add_u8(b, "unicast_flood", st.unicast_flood);
1259                 if (st.flags & DEV_OPT_SENDREDIRECTS)
1260                         blobmsg_add_u8(b, "sendredirects", st.sendredirects);
1261                 if (st.flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST)
1262                         blobmsg_add_u8(b, "drop_v4_unicast_in_l2_multicast", st.drop_v4_unicast_in_l2_multicast);
1263                 if (st.flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST)
1264                         blobmsg_add_u8(b, "drop_v6_unicast_in_l2_multicast", st.drop_v6_unicast_in_l2_multicast);
1265                 if (st.flags & DEV_OPT_DROP_GRATUITOUS_ARP)
1266                         blobmsg_add_u8(b, "drop_gratuitous_arp", st.drop_gratuitous_arp);
1267                 if (st.flags & DEV_OPT_DROP_UNSOLICITED_NA)
1268                         blobmsg_add_u8(b, "drop_unsolicited_na", st.drop_unsolicited_na);
1269                 if (st.flags & DEV_OPT_ARP_ACCEPT)
1270                         blobmsg_add_u8(b, "arp_accept", st.arp_accept);
1271                 if (st.flags & DEV_OPT_AUTH)
1272                         blobmsg_add_u8(b, "auth", st.auth);
1273         }
1274
1275         s = blobmsg_open_table(b, "statistics");
1276         if (dev->type->dump_stats)
1277                 dev->type->dump_stats(dev, b);
1278         else
1279                 system_if_dump_stats(dev, b);
1280         blobmsg_close_table(b, s);
1281 }
1282
1283 static void __init simple_device_type_init(void)
1284 {
1285         device_type_add(&simple_device_type);
1286 }
1287
1288 void device_hotplug_event(const char *name, bool add)
1289 {
1290         struct device *dev;
1291
1292         wireless_device_hotplug_event(name, add);
1293
1294         dev = device_find(name);
1295         if (!dev || dev->type != &simple_device_type)
1296                 return;
1297
1298         device_set_present(dev, add);
1299 }