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         [DEV_ATTR_PAUSE] = { .name = "pause", .type = BLOBMSG_TYPE_BOOL },
  68         [DEV_ATTR_ASYM_PAUSE] = { .name = "asym_pause", .type = BLOBMSG_TYPE_BOOL },
  69         [DEV_ATTR_RXPAUSE] = { .name = "rxpause", .type = BLOBMSG_TYPE_BOOL },
  70         [DEV_ATTR_TXPAUSE] = { .name = "txpause", .type = BLOBMSG_TYPE_BOOL },
  71         [DEV_ATTR_AUTONEG] = { .name = "autoneg", .type = BLOBMSG_TYPE_BOOL },
  72 };
  73
  74 const struct uci_blob_param_list device_attr_list = {
  75         .n_params = __DEV_ATTR_MAX,
  76         .params = dev_attrs,
  77 };
  78
  79 static int __devlock = 0;
  80
  81 int device_type_add(struct device_type *devtype)
  82 {
  83         if (device_type_get(devtype->name)) {
  84                 netifd_log_message(L_WARNING, "Device handler '%s' already exists\n",
  85                                    devtype->name);
  86                 return 1;
  87         }
  88
  89         netifd_log_message(L_NOTICE, "Added device handler type: %s\n",
  90                 devtype->name);
  91
  92         list_add(&devtype->list, &devtypes);
  93         return 0;
  94 }
  95
  96 struct device_type *
  97 device_type_get(const char *tname)
  98 {
  99         struct device_type *cur;
 100
 101         list_for_each_entry(cur, &devtypes, list)
 102                 if (!strcmp(cur->name, tname))
 103                         return cur;
 104
 105         return NULL;
 106 }
 107
 108 static int device_vlan_len(struct kvlist *kv, const void *data)
 109 {
 110         return sizeof(unsigned int);
 111 }
 112
 113 void device_vlan_update(bool done)
 114 {
 115         struct device *dev;
 116
 117         avl_for_each_element(&devices, dev, avl) {
 118                 if (!dev->vlans.update)
 119                         continue;
 120
 121                 if (!done) {
 122                         if (dev->vlan_aliases.get_len)
 123                                 kvlist_free(&dev->vlan_aliases);
 124                         else
 125                                 kvlist_init(&dev->vlan_aliases, device_vlan_len);
 126                         vlist_update(&dev->vlans);
 127                 } else {
 128                         vlist_flush(&dev->vlans);
 129
 130                         if (dev->type->vlan_update)
 131                                 dev->type->vlan_update(dev);
 132                 }
 133         }
 134 }
 135
 136 void device_stp_init(void)
 137 {
 138         struct device *dev;
 139
 140         avl_for_each_element(&devices, dev, avl) {
 141                 if (!dev->type->stp_init)
 142                         continue;
 143
 144                 dev->type->stp_init(dev);
 145         }
 146 }
 147
 148 static int set_device_state(struct device *dev, bool state)
 149 {
 150         if (state) {
 151                 /* Get ifindex for all devices being enabled so a valid  */
 152                 /* ifindex is in place avoiding possible race conditions */
 153                 device_set_ifindex(dev, system_if_resolve(dev));
 154                 if (!dev->ifindex)
 155                         return -1;
 156
 157                 system_if_get_settings(dev, &dev->orig_settings);
 158                 /* Only keep orig settings based on what needs to be set */
 159                 dev->orig_settings.valid_flags = dev->orig_settings.flags;
 160                 dev->orig_settings.flags &= dev->settings.flags;
 161                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 162
 163                 system_if_up(dev);
 164         } else {
 165                 system_if_down(dev);
 166                 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
 167         }
 168
 169         return 0;
 170 }
 171
 172 static int
 173 simple_device_set_state(struct device *dev, bool state)
 174 {
 175         struct device *pdev;
 176         int ret = 0;
 177
 178         pdev = dev->parent.dev;
 179         if (state && !pdev) {
 180                 pdev = system_if_get_parent(dev);
 181                 if (pdev)
 182                         device_add_user(&dev->parent, pdev);
 183         }
 184
 185         if (pdev) {
 186                 if (state)
 187                         ret = device_claim(&dev->parent);
 188                 else
 189                         device_release(&dev->parent);
 190
 191                 if (ret < 0)
 192                         return ret;
 193         }
 194         return set_device_state(dev, state);
 195 }
 196
 197 static struct device *
 198 simple_device_create(const char *name, struct device_type *devtype,
 199                      struct blob_attr *attr)
 200 {
 201         struct blob_attr *tb[__DEV_ATTR_MAX];
 202         struct device *dev = NULL;
 203
 204         /* device type is unused for simple devices */
 205         devtype = NULL;
 206
 207         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb, blob_data(attr), blob_len(attr));
 208         dev = device_get(name, true);
 209         if (!dev)
 210                 return NULL;
 211
 212         dev->set_state = simple_device_set_state;
 213         device_init_settings(dev, tb);
 214
 215         return dev;
 216 }
 217
 218 static void simple_device_free(struct device *dev)
 219 {
 220         if (dev->parent.dev)
 221                 device_remove_user(&dev->parent);
 222         free(dev);
 223 }
 224
 225 struct device_type simple_device_type = {
 226         .name = "Network device",
 227         .config_params = &device_attr_list,
 228
 229         .create = simple_device_create,
 230         .check_state = system_if_check,
 231         .free = simple_device_free,
 232 };
 233
 234 void
 235 device_merge_settings(struct device *dev, struct device_settings *n)
 236 {
 237         struct device_settings *os = &dev->orig_settings;
 238         struct device_settings *s = &dev->settings;
 239
 240         memset(n, 0, sizeof(*n));
 241         n->mtu = s->flags & DEV_OPT_MTU ? s->mtu : os->mtu;
 242         n->mtu6 = s->flags & DEV_OPT_MTU6 ? s->mtu6 : os->mtu6;
 243         n->txqueuelen = s->flags & DEV_OPT_TXQUEUELEN ?
 244                 s->txqueuelen : os->txqueuelen;
 245         memcpy(n->macaddr,
 246                 (s->flags & (DEV_OPT_MACADDR|DEV_OPT_DEFAULT_MACADDR) ? s->macaddr : os->macaddr),
 247                 sizeof(n->macaddr));
 248         n->ipv6 = s->flags & DEV_OPT_IPV6 ? s->ipv6 : os->ipv6;
 249         n->ip6segmentrouting = s->flags & DEV_OPT_IP6SEGMENTROUTING ? s->ip6segmentrouting : os->ip6segmentrouting;
 250         n->promisc = s->flags & DEV_OPT_PROMISC ? s->promisc : os->promisc;
 251         n->rpfilter = s->flags & DEV_OPT_RPFILTER ? s->rpfilter : os->rpfilter;
 252         n->acceptlocal = s->flags & DEV_OPT_ACCEPTLOCAL ? s->acceptlocal : os->acceptlocal;
 253         n->igmpversion = s->flags & DEV_OPT_IGMPVERSION ? s->igmpversion : os->igmpversion;
 254         n->mldversion = s->flags & DEV_OPT_MLDVERSION ? s->mldversion : os->mldversion;
 255         n->neigh4reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 256                 s->neigh4reachabletime : os->neigh4reachabletime;
 257         n->neigh6reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 258                 s->neigh6reachabletime : os->neigh6reachabletime;
 259         n->neigh4gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 260                 s->neigh4gcstaletime : os->neigh4gcstaletime;
 261         n->neigh6gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 262                 s->neigh6gcstaletime : os->neigh6gcstaletime;
 263         n->neigh4locktime = s->flags & DEV_OPT_NEIGHLOCKTIME ?
 264                 s->neigh4locktime : os->neigh4locktime;
 265         n->dadtransmits = s->flags & DEV_OPT_DADTRANSMITS ?
 266                 s->dadtransmits : os->dadtransmits;
 267         n->multicast = s->flags & DEV_OPT_MULTICAST ?
 268                 s->multicast : os->multicast;
 269         n->multicast_to_unicast = s->multicast_to_unicast;
 270         n->multicast_router = s->multicast_router;
 271         n->multicast_fast_leave = s->multicast_fast_leave;
 272         n->learning = s->learning;
 273         n->unicast_flood = s->unicast_flood;
 274         n->sendredirects = s->flags & DEV_OPT_SENDREDIRECTS ?
 275                 s->sendredirects : os->sendredirects;
 276         n->drop_v4_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST ?
 277                 s->drop_v4_unicast_in_l2_multicast : os->drop_v4_unicast_in_l2_multicast;
 278         n->drop_v6_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST ?
 279                 s->drop_v6_unicast_in_l2_multicast : os->drop_v6_unicast_in_l2_multicast;
 280         n->drop_gratuitous_arp = s->flags & DEV_OPT_DROP_GRATUITOUS_ARP ?
 281                 s->drop_gratuitous_arp : os->drop_gratuitous_arp;
 282         n->drop_unsolicited_na = s->flags & DEV_OPT_DROP_UNSOLICITED_NA ?
 283                 s->drop_unsolicited_na : os->drop_unsolicited_na;
 284         n->arp_accept = s->flags & DEV_OPT_ARP_ACCEPT ?
 285                 s->arp_accept : os->arp_accept;
 286         n->auth = s->flags & DEV_OPT_AUTH ? s->auth : os->auth;
 287         n->speed = s->flags & DEV_OPT_SPEED ? s->speed : os->speed;
 288         n->duplex = s->flags & DEV_OPT_DUPLEX ? s->duplex : os->duplex;
 289         n->pause = s->flags & DEV_OPT_PAUSE ? s->pause : os->pause;
 290         n->asym_pause = s->flags & DEV_OPT_ASYM_PAUSE ? s->asym_pause : os->asym_pause;
 291         n->rxpause = s->flags & DEV_OPT_RXPAUSE ? s->rxpause : os->rxpause;
 292         n->txpause = s->flags & DEV_OPT_TXPAUSE ? s->txpause : os->txpause;
 293         n->autoneg = s->flags & DEV_OPT_AUTONEG ? s->autoneg : os->autoneg;
 294         n->flags = s->flags | os->flags | os->valid_flags;
 295 }
 296
 297 static bool device_fill_vlan_range(struct device_vlan_range *r, const char *val)
 298 {
 299         unsigned long cur_start, cur_end;
 300         char *sep;
 301
 302         cur_start = strtoul(val, &sep, 0);
 303         cur_end = cur_start;
 304
 305         if (*sep == '-')
 306                 cur_end = strtoul(sep + 1, &sep, 0);
 307         if (*sep || cur_end < cur_start)
 308                 return false;
 309
 310         r->start = cur_start;
 311         r->end = cur_end;
 312
 313         return true;
 314 }
 315
 316 static void
 317 device_set_extra_vlans(struct device *dev, struct blob_attr *data)
 318 {
 319         struct blob_attr *cur;
 320         int n_vlans;
 321         size_t rem;
 322
 323         dev->n_extra_vlan = 0;
 324         if (!data)
 325                 return;
 326
 327         n_vlans = blobmsg_check_array(data, BLOBMSG_TYPE_STRING);
 328         if (n_vlans < 1)
 329                 return;
 330
 331         dev->extra_vlan = realloc(dev->extra_vlan, n_vlans * sizeof(*dev->extra_vlan));
 332         blobmsg_for_each_attr(cur, data, rem)
 333                 if (device_fill_vlan_range(&dev->extra_vlan[dev->n_extra_vlan],
 334                                            blobmsg_get_string(cur)))
 335                         dev->n_extra_vlan++;
 336 }
 337
 338 void
 339 device_init_settings(struct device *dev, struct blob_attr **tb)
 340 {
 341         struct device_settings *s = &dev->settings;
 342         struct blob_attr *cur;
 343         struct ether_addr *ea;
 344         bool disabled = false;
 345
 346         s->flags = 0;
 347         if ((cur = tb[DEV_ATTR_ENABLED]))
 348                 disabled = !blobmsg_get_bool(cur);
 349
 350         if ((cur = tb[DEV_ATTR_MTU]) && blobmsg_get_u32(cur) >= 68) {
 351                 s->mtu = blobmsg_get_u32(cur);
 352                 s->flags |= DEV_OPT_MTU;
 353         }
 354
 355         if ((cur = tb[DEV_ATTR_MTU6]) && blobmsg_get_u32(cur) >= 1280) {
 356                 s->mtu6 = blobmsg_get_u32(cur);
 357                 s->flags |= DEV_OPT_MTU6;
 358         }
 359
 360         if ((cur = tb[DEV_ATTR_TXQUEUELEN])) {
 361                 s->txqueuelen = blobmsg_get_u32(cur);
 362                 s->flags |= DEV_OPT_TXQUEUELEN;
 363         }
 364
 365         if ((cur = tb[DEV_ATTR_MACADDR])) {
 366                 ea = ether_aton(blobmsg_data(cur));
 367                 if (ea) {
 368                         memcpy(s->macaddr, ea, 6);
 369                         s->flags |= DEV_OPT_MACADDR;
 370                 }
 371         }
 372
 373         if ((cur = tb[DEV_ATTR_IPV6])) {
 374                 s->ipv6 = blobmsg_get_bool(cur);
 375                 s->flags |= DEV_OPT_IPV6;
 376         }
 377
 378         if ((cur = tb[DEV_ATTR_IP6SEGMENTROUTING])) {
 379                 s->ip6segmentrouting = blobmsg_get_bool(cur);
 380                 s->flags |= DEV_OPT_IP6SEGMENTROUTING;
 381         }
 382
 383         if ((cur = tb[DEV_ATTR_PROMISC])) {
 384                 s->promisc = blobmsg_get_bool(cur);
 385                 s->flags |= DEV_OPT_PROMISC;
 386         }
 387
 388         if ((cur = tb[DEV_ATTR_RPFILTER])) {
 389                 if (system_resolve_rpfilter(blobmsg_data(cur), &s->rpfilter))
 390                         s->flags |= DEV_OPT_RPFILTER;
 391                 else
 392                         DPRINTF("Failed to resolve rpfilter: %s\n", (char *) blobmsg_data(cur));
 393         }
 394
 395         if ((cur = tb[DEV_ATTR_ACCEPTLOCAL])) {
 396                 s->acceptlocal = blobmsg_get_bool(cur);
 397                 s->flags |= DEV_OPT_ACCEPTLOCAL;
 398         }
 399
 400         if ((cur = tb[DEV_ATTR_IGMPVERSION])) {
 401                 s->igmpversion = blobmsg_get_u32(cur);
 402                 if (s->igmpversion >= 1 && s->igmpversion <= 3)
 403                         s->flags |= DEV_OPT_IGMPVERSION;
 404                 else
 405                         DPRINTF("Failed to resolve igmpversion: %d\n", blobmsg_get_u32(cur));
 406         }
 407
 408         if ((cur = tb[DEV_ATTR_MLDVERSION])) {
 409                 s->mldversion = blobmsg_get_u32(cur);
 410                 if (s->mldversion >= 1 && s->mldversion <= 2)
 411                         s->flags |= DEV_OPT_MLDVERSION;
 412                 else
 413                         DPRINTF("Failed to resolve mldversion: %d\n", blobmsg_get_u32(cur));
 414         }
 415
 416         if ((cur = tb[DEV_ATTR_NEIGHREACHABLETIME])) {
 417                 s->neigh6reachabletime = s->neigh4reachabletime = blobmsg_get_u32(cur);
 418                 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
 419         }
 420
 421         if ((cur = tb[DEV_ATTR_NEIGHGCSTALETIME])) {
 422                 s->neigh6gcstaletime = s->neigh4gcstaletime = blobmsg_get_u32(cur);
 423                 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
 424         }
 425
 426         if ((cur = tb[DEV_ATTR_NEIGHLOCKTIME])) {
 427                 s->neigh4locktime = blobmsg_get_u32(cur);
 428                 s->flags |= DEV_OPT_NEIGHLOCKTIME;
 429         }
 430
 431         if ((cur = tb[DEV_ATTR_DADTRANSMITS])) {
 432                 s->dadtransmits = blobmsg_get_u32(cur);
 433                 s->flags |= DEV_OPT_DADTRANSMITS;
 434         }
 435
 436         if ((cur = tb[DEV_ATTR_MULTICAST_TO_UNICAST])) {
 437                 s->multicast_to_unicast = blobmsg_get_bool(cur);
 438                 s->flags |= DEV_OPT_MULTICAST_TO_UNICAST;
 439         }
 440
 441         if ((cur = tb[DEV_ATTR_MULTICAST_ROUTER])) {
 442                 s->multicast_router = blobmsg_get_u32(cur);
 443                 if (s->multicast_router <= 2)
 444                         s->flags |= DEV_OPT_MULTICAST_ROUTER;
 445                 else
 446                         DPRINTF("Invalid value: %d - (Use 0: never, 1: learn, 2: always)\n", blobmsg_get_u32(cur));
 447         }
 448
 449         if ((cur = tb[DEV_ATTR_MULTICAST_FAST_LEAVE])) {
 450                 s->multicast_fast_leave = blobmsg_get_bool(cur);
 451                 s->flags |= DEV_OPT_MULTICAST_FAST_LEAVE;
 452         }
 453
 454         if ((cur = tb[DEV_ATTR_MULTICAST])) {
 455                 s->multicast = blobmsg_get_bool(cur);
 456                 s->flags |= DEV_OPT_MULTICAST;
 457         }
 458
 459         if ((cur = tb[DEV_ATTR_LEARNING])) {
 460                 s->learning = blobmsg_get_bool(cur);
 461                 s->flags |= DEV_OPT_LEARNING;
 462         }
 463
 464         if ((cur = tb[DEV_ATTR_UNICAST_FLOOD])) {
 465                 s->unicast_flood = blobmsg_get_bool(cur);
 466                 s->flags |= DEV_OPT_UNICAST_FLOOD;
 467         }
 468
 469         if ((cur = tb[DEV_ATTR_SENDREDIRECTS])) {
 470                 s->sendredirects = blobmsg_get_bool(cur);
 471                 s->flags |= DEV_OPT_SENDREDIRECTS;
 472         }
 473
 474         if ((cur = tb[DEV_ATTR_ISOLATE])) {
 475                 s->isolate = blobmsg_get_bool(cur);
 476                 s->flags |= DEV_OPT_ISOLATE;
 477         }
 478
 479         if ((cur = tb[DEV_ATTR_DROP_V4_UNICAST_IN_L2_MULTICAST])) {
 480                 s->drop_v4_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 481                 s->flags |= DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST;
 482         }
 483
 484         if ((cur = tb[DEV_ATTR_DROP_V6_UNICAST_IN_L2_MULTICAST])) {
 485                 s->drop_v6_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 486                 s->flags |= DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST;
 487         }
 488
 489         if ((cur = tb[DEV_ATTR_DROP_GRATUITOUS_ARP])) {
 490                 s->drop_gratuitous_arp = blobmsg_get_bool(cur);
 491                 s->flags |= DEV_OPT_DROP_GRATUITOUS_ARP;
 492         }
 493
 494         if ((cur = tb[DEV_ATTR_DROP_UNSOLICITED_NA])) {
 495                 s->drop_unsolicited_na = blobmsg_get_bool(cur);
 496                 s->flags |= DEV_OPT_DROP_UNSOLICITED_NA;
 497         }
 498
 499         if ((cur = tb[DEV_ATTR_ARP_ACCEPT])) {
 500                 s->arp_accept = blobmsg_get_bool(cur);
 501                 s->flags |= DEV_OPT_ARP_ACCEPT;
 502         }
 503
 504         if ((cur = tb[DEV_ATTR_AUTH])) {
 505                 s->auth = blobmsg_get_bool(cur);
 506                 s->flags |= DEV_OPT_AUTH;
 507         }
 508
 509         if ((cur = tb[DEV_ATTR_SPEED])) {
 510                 s->speed = blobmsg_get_u32(cur);
 511                 s->flags |= DEV_OPT_SPEED;
 512         }
 513
 514         if ((cur = tb[DEV_ATTR_DUPLEX])) {
 515                 s->duplex = blobmsg_get_bool(cur);
 516                 s->flags |= DEV_OPT_DUPLEX;
 517         }
 518
 519         if ((cur = tb[DEV_ATTR_PAUSE])) {
 520                 s->pause = blobmsg_get_bool(cur);
 521                 s->flags |= DEV_OPT_PAUSE;
 522         }
 523
 524         if ((cur = tb[DEV_ATTR_ASYM_PAUSE])) {
 525                 s->asym_pause = blobmsg_get_bool(cur);
 526                 s->flags |= DEV_OPT_ASYM_PAUSE;
 527         }
 528
 529         if ((cur = tb[DEV_ATTR_RXPAUSE])) {
 530                 s->rxpause = blobmsg_get_bool(cur);
 531                 s->flags |= DEV_OPT_RXPAUSE;
 532         }
 533
 534         if ((cur = tb[DEV_ATTR_TXPAUSE])) {
 535                 s->txpause = blobmsg_get_bool(cur);
 536                 s->flags |= DEV_OPT_TXPAUSE;
 537         }
 538
 539         if ((cur = tb[DEV_ATTR_AUTONEG])) {
 540                 s->autoneg = blobmsg_get_bool(cur);
 541                 s->flags |= DEV_OPT_AUTONEG;
 542         }
 543         device_set_extra_vlans(dev, tb[DEV_ATTR_VLAN]);
 544         device_set_disabled(dev, disabled);
 545 }
 546
 547 static void __init dev_init(void)
 548 {
 549         avl_init(&devices, avl_strcmp, true, NULL);
 550 }
 551
 552 static int device_release_cb(void *ctx, struct safe_list *list)
 553 {
 554         struct device_user *dep = container_of(list, struct device_user, list);
 555
 556         if (!dep->dev || !dep->claimed)
 557                 return 0;
 558
 559         device_release(dep);
 560         return 0;
 561 }
 562
 563 static int device_broadcast_cb(void *ctx, struct safe_list *list)
 564 {
 565         struct device_user *dep = container_of(list, struct device_user, list);
 566         int *ev = ctx;
 567
 568         /* device might have been removed by an earlier callback */
 569         if (!dep->dev)
 570                 return 0;
 571
 572         if (dep->cb)
 573                 dep->cb(dep, *ev);
 574         return 0;
 575 }
 576
 577 void device_broadcast_event(struct device *dev, enum device_event ev)
 578 {
 579         int dev_ev = ev;
 580
 581         safe_list_for_each(&dev->aliases, device_broadcast_cb, &dev_ev);
 582         safe_list_for_each(&dev->users, device_broadcast_cb, &dev_ev);
 583 }
 584
 585 static void
 586 device_fill_default_settings(struct device *dev)
 587 {
 588         struct device_settings *s = &dev->settings;
 589         struct ether_addr *ea;
 590
 591         if (!(s->flags & DEV_OPT_MACADDR)) {
 592                 ea = config_get_default_macaddr(dev->ifname);
 593                 if (ea) {
 594                         memcpy(s->macaddr, ea, 6);
 595                         s->flags |= DEV_OPT_DEFAULT_MACADDR;
 596                 }
 597         }
 598 }
 599
 600 int device_claim(struct device_user *dep)
 601 {
 602         struct device *dev = dep->dev;
 603         int ret = 0;
 604
 605         if (dep->claimed)
 606                 return 0;
 607
 608         if (!dev)
 609                 return -1;
 610
 611         dep->claimed = true;
 612         D(DEVICE, "Claim %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active + 1);
 613         if (++dev->active != 1)
 614                 return 0;
 615
 616         device_broadcast_event(dev, DEV_EVENT_SETUP);
 617         device_fill_default_settings(dev);
 618         if (dev->external) {
 619                 /* Get ifindex for external claimed devices so a valid   */
 620                 /* ifindex is in place avoiding possible race conditions */
 621                 device_set_ifindex(dev, system_if_resolve(dev));
 622                 if (!dev->ifindex)
 623                         ret = -1;
 624
 625                 system_if_get_settings(dev, &dev->orig_settings);
 626         } else
 627                 ret = dev->set_state(dev, true);
 628
 629         if (ret == 0)
 630                 device_broadcast_event(dev, DEV_EVENT_UP);
 631         else {
 632                 D(DEVICE, "claim %s %s failed: %d\n", dev->type->name, dev->ifname, ret);
 633                 dev->active = 0;
 634                 dep->claimed = false;
 635         }
 636
 637         return ret;
 638 }
 639
 640 void device_release(struct device_user *dep)
 641 {
 642         struct device *dev = dep->dev;
 643
 644         if (!dep->claimed)
 645                 return;
 646
 647         dep->claimed = false;
 648         dev->active--;
 649         D(DEVICE, "Release %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active);
 650         assert(dev->active >= 0);
 651
 652         if (dev->active)
 653                 return;
 654
 655         device_broadcast_event(dev, DEV_EVENT_TEARDOWN);
 656         if (!dev->external)
 657                 dev->set_state(dev, false);
 658
 659         if (dev->active)
 660                 return;
 661
 662         device_broadcast_event(dev, DEV_EVENT_DOWN);
 663 }
 664
 665 int device_check_state(struct device *dev)
 666 {
 667         if (!dev->type->check_state)
 668                 return simple_device_type.check_state(dev);
 669
 670         return dev->type->check_state(dev);
 671 }
 672
 673 int device_init_virtual(struct device *dev, struct device_type *type, const char *name)
 674 {
 675         assert(dev);
 676         assert(type);
 677
 678         D(DEVICE, "Initialize device '%s'\n", name ? name : "");
 679         INIT_SAFE_LIST(&dev->users);
 680         INIT_SAFE_LIST(&dev->aliases);
 681         dev->type = type;
 682
 683         if (name) {
 684                 int ret;
 685
 686                 ret = device_set_ifname(dev, name);
 687                 if (ret < 0)
 688                         return ret;
 689         }
 690
 691         if (!dev->set_state)
 692                 dev->set_state = set_device_state;
 693
 694         return 0;
 695 }
 696
 697 int device_init(struct device *dev, struct device_type *type, const char *ifname)
 698 {
 699         int ret;
 700
 701         ret = device_init_virtual(dev, type, ifname);
 702         if (ret < 0)
 703                 return ret;
 704
 705         dev->avl.key = dev->ifname;
 706
 707         ret = avl_insert(&devices, &dev->avl);
 708         if (ret < 0)
 709                 return ret;
 710
 711         system_if_clear_state(dev);
 712
 713         return 0;
 714 }
 715
 716 static struct device *
 717 device_create_default(const char *name, bool external)
 718 {
 719         struct device *dev;
 720
 721         if (!external && system_if_force_external(name))
 722                 return NULL;
 723
 724         D(DEVICE, "Create simple device '%s'\n", name);
 725         dev = calloc(1, sizeof(*dev));
 726         if (!dev)
 727                 return NULL;
 728
 729         dev->external = external;
 730         dev->set_state = simple_device_set_state;
 731
 732         if (device_init(dev, &simple_device_type, name) < 0) {
 733                 device_cleanup(dev);
 734                 free(dev);
 735                 return NULL;
 736         }
 737
 738         dev->default_config = true;
 739         if (external)
 740                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 741
 742         device_check_state(dev);
 743
 744         return dev;
 745 }
 746
 747 struct device *
 748 device_find(const char *name)
 749 {
 750         struct device *dev;
 751
 752         return avl_find_element(&devices, name, dev, avl);
 753 }
 754
 755 struct device *
 756 __device_get(const char *name, int create, bool check_vlan)
 757 {
 758         struct device *dev;
 759
 760         dev = avl_find_element(&devices, name, dev, avl);
 761
 762         if (!dev && check_vlan && strchr(name, '.'))
 763                 return get_vlan_device_chain(name, create);
 764
 765         if (name[0] == '@')
 766                 return device_alias_get(name + 1);
 767
 768         if (dev) {
 769                 if (create > 1 && !dev->external) {
 770                         system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 771                         dev->external = true;
 772                         device_set_present(dev, true);
 773                 }
 774                 return dev;
 775         }
 776
 777         if (!create)
 778                 return NULL;
 779
 780         return device_create_default(name, create > 1);
 781 }
 782
 783 static void
 784 device_delete(struct device *dev)
 785 {
 786         if (!dev->avl.key)
 787                 return;
 788
 789         D(DEVICE, "Delete device '%s' from list\n", dev->ifname);
 790         avl_delete(&devices, &dev->avl);
 791         dev->avl.key = NULL;
 792 }
 793
 794 static int device_cleanup_cb(void *ctx, struct safe_list *list)
 795 {
 796         struct device_user *dep = container_of(list, struct device_user, list);
 797         if (dep->cb)
 798                 dep->cb(dep, DEV_EVENT_REMOVE);
 799
 800         device_release(dep);
 801         return 0;
 802 }
 803
 804 void device_cleanup(struct device *dev)
 805 {
 806         D(DEVICE, "Clean up device '%s'\n", dev->ifname);
 807         safe_list_for_each(&dev->users, device_cleanup_cb, NULL);
 808         safe_list_for_each(&dev->aliases, device_cleanup_cb, NULL);
 809         device_delete(dev);
 810 }
 811
 812 static void __device_set_present(struct device *dev, bool state)
 813 {
 814         if (dev->present == state)
 815                 return;
 816
 817         dev->present = state;
 818         device_broadcast_event(dev, state ? DEV_EVENT_ADD : DEV_EVENT_REMOVE);
 819 }
 820
 821 void
 822 device_refresh_present(struct device *dev)
 823 {
 824         bool state = dev->sys_present;
 825
 826         if (dev->disabled || dev->deferred)
 827                 state = false;
 828
 829         __device_set_present(dev, state);
 830 }
 831
 832 void
 833 device_set_auth_status(struct device *dev, bool value)
 834 {
 835         if (dev->auth_status == value)
 836                 return;
 837
 838         dev->auth_status = value;
 839         if (!dev->present)
 840                 return;
 841
 842         if (dev->auth_status) {
 843                 device_broadcast_event(dev, DEV_EVENT_AUTH_UP);
 844                 return;
 845         }
 846
 847         device_broadcast_event(dev, DEV_EVENT_LINK_DOWN);
 848         if (!dev->link_active)
 849                 return;
 850
 851         device_broadcast_event(dev, DEV_EVENT_LINK_UP);
 852 }
 853
 854 void device_set_present(struct device *dev, bool state)
 855 {
 856         if (dev->sys_present == state)
 857                 return;
 858
 859         D(DEVICE, "%s '%s' %s present\n", dev->type->name, dev->ifname, state ? "is now" : "is no longer" );
 860         dev->sys_present = state;
 861         device_refresh_present(dev);
 862         if (!state)
 863                 safe_list_for_each(&dev->users, device_release_cb, NULL);
 864 }
 865
 866 void device_set_link(struct device *dev, bool state)
 867 {
 868         if (dev->link_active == state)
 869                 return;
 870
 871         netifd_log_message(L_NOTICE, "%s '%s' link is %s\n", dev->type->name, dev->ifname, state ? "up" : "down" );
 872
 873         dev->link_active = state;
 874         if (!state)
 875                 dev->auth_status = false;
 876         device_broadcast_event(dev, state ? DEV_EVENT_LINK_UP : DEV_EVENT_LINK_DOWN);
 877 }
 878
 879 void device_set_ifindex(struct device *dev, int ifindex)
 880 {
 881         if (dev->ifindex == ifindex)
 882                 return;
 883
 884         dev->ifindex = ifindex;
 885         device_broadcast_event(dev, DEV_EVENT_UPDATE_IFINDEX);
 886 }
 887
 888 int device_set_ifname(struct device *dev, const char *name)
 889 {
 890         int ret = 0;
 891
 892         if (!strcmp(dev->ifname, name))
 893                 return 0;
 894
 895         if (strlen(name) > sizeof(dev->ifname) - 1)
 896                 return -1;
 897
 898         if (dev->avl.key)
 899                 avl_delete(&devices, &dev->avl);
 900
 901         strcpy(dev->ifname, name);
 902
 903         if (dev->avl.key)
 904                 ret = avl_insert(&devices, &dev->avl);
 905
 906         if (ret == 0)
 907                 device_broadcast_event(dev, DEV_EVENT_UPDATE_IFNAME);
 908
 909         return ret;
 910 }
 911
 912 static int device_refcount(struct device *dev)
 913 {
 914         struct list_head *list;
 915         int count = 0;
 916
 917         list_for_each(list, &dev->users.list)
 918                 count++;
 919
 920         list_for_each(list, &dev->aliases.list)
 921                 count++;
 922
 923         return count;
 924 }
 925
 926 static void
 927 __device_add_user(struct device_user *dep, struct device *dev)
 928 {
 929         struct safe_list *head;
 930
 931         dep->dev = dev;
 932
 933         if (dep->alias)
 934                 head = &dev->aliases;
 935         else
 936                 head = &dev->users;
 937
 938         safe_list_add(&dep->list, head);
 939         D(DEVICE, "Add user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
 940
 941         if (dep->cb && dev->present) {
 942                 dep->cb(dep, DEV_EVENT_ADD);
 943                 if (dev->active)
 944                         dep->cb(dep, DEV_EVENT_UP);
 945
 946                 if (dev->link_active)
 947                         dep->cb(dep, DEV_EVENT_LINK_UP);
 948         }
 949 }
 950
 951 void device_add_user(struct device_user *dep, struct device *dev)
 952 {
 953         if (dep->dev == dev)
 954                 return;
 955
 956         if (dep->dev)
 957                 device_remove_user(dep);
 958
 959         if (!dev)
 960                 return;
 961
 962         __device_add_user(dep, dev);
 963 }
 964
 965 static void
 966 device_free(struct device *dev)
 967 {
 968         __devlock++;
 969         free(dev->config);
 970         device_cleanup(dev);
 971         free(dev->extra_vlan);
 972         dev->type->free(dev);
 973         __devlock--;
 974 }
 975
 976 static void
 977 __device_free_unused(struct uloop_timeout *timeout)
 978 {
 979         struct device *dev, *tmp;
 980
 981         avl_for_each_element_safe(&devices, dev, avl, tmp) {
 982                 if (!safe_list_empty(&dev->users) ||
 983                         !safe_list_empty(&dev->aliases) ||
 984                         dev->current_config)
 985                         continue;
 986
 987                 device_free(dev);
 988         }
 989 }
 990
 991 void device_free_unused(void)
 992 {
 993         static struct uloop_timeout free_timer = {
 994                 .cb = __device_free_unused,
 995         };
 996
 997         uloop_timeout_set(&free_timer, 1);
 998 }
 999
1000 void device_remove_user(struct device_user *dep)
1001 {
1002         struct device *dev = dep->dev;
1003
1004         if (!dep->dev)
1005                 return;
1006
1007         dep->hotplug = false;
1008         if (dep->claimed)
1009                 device_release(dep);
1010
1011         safe_list_del(&dep->list);
1012         dep->dev = NULL;
1013         D(DEVICE, "Remove user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
1014         device_free_unused();
1015 }
1016
1017 void
1018 device_init_pending(void)
1019 {
1020         struct device *dev, *tmp;
1021
1022         avl_for_each_element_safe(&devices, dev, avl, tmp) {
1023                 if (!dev->config_pending)
1024                         continue;
1025
1026                 dev->type->config_init(dev);
1027                 dev->config_pending = false;
1028                 device_check_state(dev);
1029         }
1030 }
1031
1032 bool
1033 device_check_ip6segmentrouting(void)
1034 {
1035         struct device *dev;
1036         bool ip6segmentrouting = false;
1037
1038         avl_for_each_element(&devices, dev, avl)
1039                 ip6segmentrouting |= dev->settings.ip6segmentrouting;
1040
1041         return ip6segmentrouting;
1042 }
1043
1044 static enum dev_change_type
1045 device_set_config(struct device *dev, struct device_type *type,
1046                   struct blob_attr *attr)
1047 {
1048         struct blob_attr *tb[__DEV_ATTR_MAX];
1049         const struct uci_blob_param_list *cfg = type->config_params;
1050
1051         if (type != dev->type)
1052                 return DEV_CONFIG_RECREATE;
1053
1054         if (dev->type->reload)
1055                 return dev->type->reload(dev, attr);
1056
1057         if (uci_blob_check_equal(dev->config, attr, cfg))
1058                 return DEV_CONFIG_NO_CHANGE;
1059
1060         if (cfg == &device_attr_list) {
1061                 memset(tb, 0, sizeof(tb));
1062
1063                 if (attr)
1064                         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb,
1065                                 blob_data(attr), blob_len(attr));
1066
1067                 device_init_settings(dev, tb);
1068                 return DEV_CONFIG_RESTART;
1069         } else
1070                 return DEV_CONFIG_RECREATE;
1071 }
1072
1073 enum dev_change_type
1074 device_apply_config(struct device *dev, struct device_type *type,
1075                     struct blob_attr *config)
1076 {
1077         enum dev_change_type change;
1078
1079         change = device_set_config(dev, type, config);
1080         if (dev->external) {
1081                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1082                 change = DEV_CONFIG_APPLIED;
1083         }
1084
1085         switch (change) {
1086                 case DEV_CONFIG_RESTART:
1087                 case DEV_CONFIG_APPLIED:
1088                         D(DEVICE, "Device '%s': config applied\n", dev->ifname);
1089                         config = blob_memdup(config);
1090                         free(dev->config);
1091                         dev->config = config;
1092                         if (change == DEV_CONFIG_RESTART && dev->present) {
1093                                 int ret = 0;
1094
1095                                 device_set_present(dev, false);
1096                                 if (dev->active && !dev->external) {
1097                                         ret = dev->set_state(dev, false);
1098                                         if (!ret)
1099                                                 ret = dev->set_state(dev, true);
1100                                 }
1101                                 if (!ret)
1102                                         device_set_present(dev, true);
1103                         }
1104                         break;
1105                 case DEV_CONFIG_NO_CHANGE:
1106                         D(DEVICE, "Device '%s': no configuration change\n", dev->ifname);
1107                         break;
1108                 case DEV_CONFIG_RECREATE:
1109                         break;
1110         }
1111
1112         return change;
1113 }
1114
1115 static void
1116 device_replace(struct device *dev, struct device *odev)
1117 {
1118         struct device_user *dep;
1119
1120         __devlock++;
1121         if (odev->present)
1122                 device_set_present(odev, false);
1123
1124         while (!list_empty(&odev->users.list)) {
1125                 dep = list_first_entry(&odev->users.list, struct device_user, list.list);
1126                 device_release(dep);
1127                 if (!dep->dev)
1128                         continue;
1129
1130                 safe_list_del(&dep->list);
1131                 __device_add_user(dep, dev);
1132         }
1133         __devlock--;
1134
1135         device_free(odev);
1136 }
1137
1138 void
1139 device_reset_config(void)
1140 {
1141         struct device *dev;
1142
1143         avl_for_each_element(&devices, dev, avl)
1144                 dev->current_config = false;
1145 }
1146
1147 void
1148 device_reset_old(void)
1149 {
1150         struct device *dev, *tmp, *ndev;
1151
1152         avl_for_each_element_safe(&devices, dev, avl, tmp) {
1153                 if (dev->current_config || dev->default_config)
1154                         continue;
1155
1156                 if (dev->type != &simple_device_type)
1157                         continue;
1158
1159                 ndev = device_create_default(dev->ifname, dev->external);
1160                 if (!ndev)
1161                         continue;
1162
1163                 device_replace(ndev, dev);
1164         }
1165 }
1166
1167 struct device *
1168 device_create(const char *name, struct device_type *type,
1169               struct blob_attr *config)
1170 {
1171         struct device *odev = NULL, *dev;
1172         enum dev_change_type change;
1173
1174         odev = device_find(name);
1175         if (odev) {
1176                 odev->current_config = true;
1177                 change = device_apply_config(odev, type, config);
1178                 switch (change) {
1179                 case DEV_CONFIG_RECREATE:
1180                         D(DEVICE, "Device '%s': recreate device\n", odev->ifname);
1181                         device_delete(odev);
1182                         break;
1183                 default:
1184                         return odev;
1185                 }
1186         } else
1187                 D(DEVICE, "Create new device '%s' (%s)\n", name, type->name);
1188
1189         config = blob_memdup(config);
1190         if (!config)
1191                 return NULL;
1192
1193         dev = type->create(name, type, config);
1194         if (!dev)
1195                 return NULL;
1196
1197         dev->current_config = true;
1198         dev->config = config;
1199         if (odev)
1200                 device_replace(dev, odev);
1201
1202         if (!config_init && dev->config_pending) {
1203                 type->config_init(dev);
1204                 dev->config_pending = false;
1205         }
1206
1207         device_check_state(dev);
1208
1209         return dev;
1210 }
1211
1212 void
1213 device_dump_status(struct blob_buf *b, struct device *dev)
1214 {
1215         struct device_settings st;
1216         void *c, *s;
1217
1218         if (!dev) {
1219                 avl_for_each_element(&devices, dev, avl) {
1220                         if (!dev->present)
1221                                 continue;
1222                         c = blobmsg_open_table(b, dev->ifname);
1223                         device_dump_status(b, dev);
1224                         blobmsg_close_table(b, c);
1225                 }
1226
1227                 return;
1228         }
1229
1230         blobmsg_add_u8(b, "external", dev->external);
1231         blobmsg_add_u8(b, "present", dev->present);
1232         blobmsg_add_string(b, "type", dev->type->name);
1233
1234         if (!dev->present)
1235                 return;
1236
1237         blobmsg_add_u8(b, "up", !!dev->active);
1238         blobmsg_add_u8(b, "carrier", !!dev->link_active);
1239         blobmsg_add_u8(b, "auth_status", !!dev->auth_status);
1240
1241         if (dev->type->dump_info)
1242                 dev->type->dump_info(dev, b);
1243         else
1244                 system_if_dump_info(dev, b);
1245
1246         if (dev->active) {
1247                 device_merge_settings(dev, &st);
1248                 if (st.flags & DEV_OPT_MTU)
1249                         blobmsg_add_u32(b, "mtu", st.mtu);
1250                 if (st.flags & DEV_OPT_MTU6)
1251                         blobmsg_add_u32(b, "mtu6", st.mtu6);
1252                 if (st.flags & DEV_OPT_MACADDR)
1253                         blobmsg_add_string(b, "macaddr", format_macaddr(st.macaddr));
1254                 if (st.flags & DEV_OPT_TXQUEUELEN)
1255                         blobmsg_add_u32(b, "txqueuelen", st.txqueuelen);
1256                 if (st.flags & DEV_OPT_IPV6)
1257                         blobmsg_add_u8(b, "ipv6", st.ipv6);
1258                 if (st.flags & DEV_OPT_IP6SEGMENTROUTING)
1259                         blobmsg_add_u8(b, "ip6segmentrouting", st.ip6segmentrouting);
1260                 if (st.flags & DEV_OPT_PROMISC)
1261                         blobmsg_add_u8(b, "promisc", st.promisc);
1262                 if (st.flags & DEV_OPT_RPFILTER)
1263                         blobmsg_add_u32(b, "rpfilter", st.rpfilter);
1264                 if (st.flags & DEV_OPT_ACCEPTLOCAL)
1265                         blobmsg_add_u8(b, "acceptlocal", st.acceptlocal);
1266                 if (st.flags & DEV_OPT_IGMPVERSION)
1267                         blobmsg_add_u32(b, "igmpversion", st.igmpversion);
1268                 if (st.flags & DEV_OPT_MLDVERSION)
1269                         blobmsg_add_u32(b, "mldversion", st.mldversion);
1270                 if (st.flags & DEV_OPT_NEIGHREACHABLETIME) {
1271                         blobmsg_add_u32(b, "neigh4reachabletime", st.neigh4reachabletime);
1272                         blobmsg_add_u32(b, "neigh6reachabletime", st.neigh6reachabletime);
1273                 }
1274                 if (st.flags & DEV_OPT_NEIGHGCSTALETIME) {
1275                         blobmsg_add_u32(b, "neigh4gcstaletime", st.neigh4gcstaletime);
1276                         blobmsg_add_u32(b, "neigh6gcstaletime", st.neigh6gcstaletime);
1277                 }
1278                 if (st.flags & DEV_OPT_NEIGHLOCKTIME)
1279                         blobmsg_add_u32(b, "neigh4locktime", st.neigh4locktime);
1280                 if (st.flags & DEV_OPT_DADTRANSMITS)
1281                         blobmsg_add_u32(b, "dadtransmits", st.dadtransmits);
1282                 if (st.flags & DEV_OPT_MULTICAST_TO_UNICAST)
1283                         blobmsg_add_u8(b, "multicast_to_unicast", st.multicast_to_unicast);
1284                 if (st.flags & DEV_OPT_MULTICAST_ROUTER)
1285                         blobmsg_add_u32(b, "multicast_router", st.multicast_router);
1286                 if (st.flags & DEV_OPT_MULTICAST_FAST_LEAVE)
1287                         blobmsg_add_u8(b, "multicast_fast_leave", st.multicast_fast_leave);
1288                 if (st.flags & DEV_OPT_MULTICAST)
1289                         blobmsg_add_u8(b, "multicast", st.multicast);
1290                 if (st.flags & DEV_OPT_LEARNING)
1291                         blobmsg_add_u8(b, "learning", st.learning);
1292                 if (st.flags & DEV_OPT_UNICAST_FLOOD)
1293                         blobmsg_add_u8(b, "unicast_flood", st.unicast_flood);
1294                 if (st.flags & DEV_OPT_SENDREDIRECTS)
1295                         blobmsg_add_u8(b, "sendredirects", st.sendredirects);
1296                 if (st.flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST)
1297                         blobmsg_add_u8(b, "drop_v4_unicast_in_l2_multicast", st.drop_v4_unicast_in_l2_multicast);
1298                 if (st.flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST)
1299                         blobmsg_add_u8(b, "drop_v6_unicast_in_l2_multicast", st.drop_v6_unicast_in_l2_multicast);
1300                 if (st.flags & DEV_OPT_DROP_GRATUITOUS_ARP)
1301                         blobmsg_add_u8(b, "drop_gratuitous_arp", st.drop_gratuitous_arp);
1302                 if (st.flags & DEV_OPT_DROP_UNSOLICITED_NA)
1303                         blobmsg_add_u8(b, "drop_unsolicited_na", st.drop_unsolicited_na);
1304                 if (st.flags & DEV_OPT_ARP_ACCEPT)
1305                         blobmsg_add_u8(b, "arp_accept", st.arp_accept);
1306                 if (st.flags & DEV_OPT_AUTH)
1307                         blobmsg_add_u8(b, "auth", st.auth);
1308         }
1309
1310         s = blobmsg_open_table(b, "statistics");
1311         if (dev->type->dump_stats)
1312                 dev->type->dump_stats(dev, b);
1313         else
1314                 system_if_dump_stats(dev, b);
1315         blobmsg_close_table(b, s);
1316 }
1317
1318 static void __init simple_device_type_init(void)
1319 {
1320         device_type_add(&simple_device_type);
1321 }
1322
1323 void device_hotplug_event(const char *name, bool add)
1324 {
1325         struct device *dev;
1326
1327         wireless_device_hotplug_event(name, add);
1328
1329         dev = device_find(name);
1330         if (!dev || dev->type != &simple_device_type)
1331                 return;
1332
1333         device_set_present(dev, add);
1334 }