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 #include "ubus.h"
  29
  30 static struct list_head devtypes = LIST_HEAD_INIT(devtypes);
  31 static struct avl_tree devices;
  32 static struct blob_buf b;
  33
  34 static const struct blobmsg_policy dev_attrs[__DEV_ATTR_MAX] = {
  35         [DEV_ATTR_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
  36         [DEV_ATTR_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
  37         [DEV_ATTR_MTU6] = { .name = "mtu6", .type = BLOBMSG_TYPE_INT32 },
  38         [DEV_ATTR_MACADDR] = { .name = "macaddr", .type = BLOBMSG_TYPE_STRING },
  39         [DEV_ATTR_TXQUEUELEN] = { .name = "txqueuelen", .type = BLOBMSG_TYPE_INT32 },
  40         [DEV_ATTR_ENABLED] = { .name = "enabled", .type = BLOBMSG_TYPE_BOOL },
  41         [DEV_ATTR_IPV6] = { .name = "ipv6", .type = BLOBMSG_TYPE_BOOL },
  42         [DEV_ATTR_IP6SEGMENTROUTING] = { .name = "ip6segmentrouting", .type = BLOBMSG_TYPE_BOOL },
  43         [DEV_ATTR_PROMISC] = { .name = "promisc", .type = BLOBMSG_TYPE_BOOL },
  44         [DEV_ATTR_RPFILTER] = { .name = "rpfilter", .type = BLOBMSG_TYPE_STRING },
  45         [DEV_ATTR_ACCEPTLOCAL] = { .name = "acceptlocal", .type = BLOBMSG_TYPE_BOOL },
  46         [DEV_ATTR_IGMPVERSION] = { .name = "igmpversion", .type = BLOBMSG_TYPE_INT32 },
  47         [DEV_ATTR_MLDVERSION] = { .name = "mldversion", .type = BLOBMSG_TYPE_INT32 },
  48         [DEV_ATTR_NEIGHREACHABLETIME] = { .name = "neighreachabletime", .type = BLOBMSG_TYPE_INT32 },
  49         [DEV_ATTR_NEIGHGCSTALETIME] = { .name = "neighgcstaletime", .type = BLOBMSG_TYPE_INT32 },
  50         [DEV_ATTR_DADTRANSMITS] = { .name = "dadtransmits", .type = BLOBMSG_TYPE_INT32 },
  51         [DEV_ATTR_MULTICAST_TO_UNICAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
  52         [DEV_ATTR_MULTICAST_ROUTER] = { .name = "multicast_router", .type = BLOBMSG_TYPE_INT32 },
  53         [DEV_ATTR_MULTICAST_FAST_LEAVE] = { .name = "multicast_fast_leave", . type = BLOBMSG_TYPE_BOOL },
  54         [DEV_ATTR_MULTICAST] = { .name ="multicast", .type = BLOBMSG_TYPE_BOOL },
  55         [DEV_ATTR_LEARNING] = { .name ="learning", .type = BLOBMSG_TYPE_BOOL },
  56         [DEV_ATTR_UNICAST_FLOOD] = { .name ="unicast_flood", .type = BLOBMSG_TYPE_BOOL },
  57         [DEV_ATTR_SENDREDIRECTS] = { .name = "sendredirects", .type = BLOBMSG_TYPE_BOOL },
  58         [DEV_ATTR_NEIGHLOCKTIME] = { .name = "neighlocktime", .type = BLOBMSG_TYPE_INT32 },
  59         [DEV_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
  60         [DEV_ATTR_DROP_V4_UNICAST_IN_L2_MULTICAST] = { .name = "drop_v4_unicast_in_l2_multicast", .type = BLOBMSG_TYPE_BOOL },
  61         [DEV_ATTR_DROP_V6_UNICAST_IN_L2_MULTICAST] = { .name = "drop_v6_unicast_in_l2_multicast", .type = BLOBMSG_TYPE_BOOL },
  62         [DEV_ATTR_DROP_GRATUITOUS_ARP] = { .name = "drop_gratuitous_arp", .type = BLOBMSG_TYPE_BOOL },
  63         [DEV_ATTR_DROP_UNSOLICITED_NA] = { .name = "drop_unsolicited_na", .type = BLOBMSG_TYPE_BOOL },
  64         [DEV_ATTR_ARP_ACCEPT] = { .name = "arp_accept", .type = BLOBMSG_TYPE_BOOL },
  65         [DEV_ATTR_AUTH] = { .name = "auth", .type = BLOBMSG_TYPE_BOOL },
  66         [DEV_ATTR_SPEED] = { .name = "speed", .type = BLOBMSG_TYPE_INT32 },
  67         [DEV_ATTR_DUPLEX] = { .name = "duplex", .type = BLOBMSG_TYPE_BOOL },
  68         [DEV_ATTR_VLAN] = { .name = "vlan", .type = BLOBMSG_TYPE_ARRAY },
  69         [DEV_ATTR_PAUSE] = { .name = "pause", .type = BLOBMSG_TYPE_BOOL },
  70         [DEV_ATTR_ASYM_PAUSE] = { .name = "asym_pause", .type = BLOBMSG_TYPE_BOOL },
  71         [DEV_ATTR_RXPAUSE] = { .name = "rxpause", .type = BLOBMSG_TYPE_BOOL },
  72         [DEV_ATTR_TXPAUSE] = { .name = "txpause", .type = BLOBMSG_TYPE_BOOL },
  73         [DEV_ATTR_AUTONEG] = { .name = "autoneg", .type = BLOBMSG_TYPE_BOOL },
  74 };
  75
  76 const struct uci_blob_param_list device_attr_list = {
  77         .n_params = __DEV_ATTR_MAX,
  78         .params = dev_attrs,
  79 };
  80
  81 static int __devlock = 0;
  82
  83 int device_type_add(struct device_type *devtype)
  84 {
  85         if (device_type_get(devtype->name)) {
  86                 netifd_log_message(L_WARNING, "Device handler '%s' already exists\n",
  87                                    devtype->name);
  88                 return 1;
  89         }
  90
  91         netifd_log_message(L_NOTICE, "Added device handler type: %s\n",
  92                 devtype->name);
  93
  94         list_add(&devtype->list, &devtypes);
  95         return 0;
  96 }
  97
  98 struct device_type *
  99 device_type_get(const char *tname)
 100 {
 101         struct device_type *cur;
 102
 103         list_for_each_entry(cur, &devtypes, list)
 104                 if (!strcmp(cur->name, tname))
 105                         return cur;
 106
 107         return NULL;
 108 }
 109
 110 static int device_vlan_len(struct kvlist *kv, const void *data)
 111 {
 112         return sizeof(unsigned int);
 113 }
 114
 115 void device_vlan_update(bool done)
 116 {
 117         struct device *dev;
 118
 119         avl_for_each_element(&devices, dev, avl) {
 120                 if (!dev->vlans.update)
 121                         continue;
 122
 123                 if (!done) {
 124                         if (dev->vlan_aliases.get_len)
 125                                 kvlist_free(&dev->vlan_aliases);
 126                         else
 127                                 kvlist_init(&dev->vlan_aliases, device_vlan_len);
 128                         vlist_update(&dev->vlans);
 129                 } else {
 130                         vlist_flush(&dev->vlans);
 131
 132                         if (dev->type->vlan_update)
 133                                 dev->type->vlan_update(dev);
 134                 }
 135         }
 136 }
 137
 138 void device_stp_init(void)
 139 {
 140         struct device *dev;
 141
 142         avl_for_each_element(&devices, dev, avl) {
 143                 if (!dev->type->stp_init)
 144                         continue;
 145
 146                 dev->type->stp_init(dev);
 147         }
 148 }
 149
 150 static int set_device_state(struct device *dev, bool state)
 151 {
 152         if (state) {
 153                 /* Get ifindex for all devices being enabled so a valid  */
 154                 /* ifindex is in place avoiding possible race conditions */
 155                 device_set_ifindex(dev, system_if_resolve(dev));
 156                 if (!dev->ifindex)
 157                         return -1;
 158
 159                 system_if_get_settings(dev, &dev->orig_settings);
 160                 /* Only keep orig settings based on what needs to be set */
 161                 dev->orig_settings.valid_flags = dev->orig_settings.flags;
 162                 dev->orig_settings.flags &= dev->settings.flags;
 163                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 164
 165                 system_if_up(dev);
 166         } else {
 167                 system_if_down(dev);
 168                 system_if_apply_settings(dev, &dev->orig_settings, dev->orig_settings.flags);
 169         }
 170
 171         return 0;
 172 }
 173
 174 static int
 175 simple_device_set_state(struct device *dev, bool state)
 176 {
 177         struct device *pdev;
 178         int ret = 0;
 179
 180         pdev = dev->parent.dev;
 181         if (state && !pdev) {
 182                 pdev = system_if_get_parent(dev);
 183                 if (pdev)
 184                         device_add_user(&dev->parent, pdev);
 185         }
 186
 187         if (pdev) {
 188                 if (state)
 189                         ret = device_claim(&dev->parent);
 190                 else
 191                         device_release(&dev->parent);
 192
 193                 if (ret < 0)
 194                         return ret;
 195         }
 196         return set_device_state(dev, state);
 197 }
 198
 199 static struct device *
 200 simple_device_create(const char *name, struct device_type *devtype,
 201                      struct blob_attr *attr)
 202 {
 203         struct blob_attr *tb[__DEV_ATTR_MAX];
 204         struct device *dev = NULL;
 205
 206         /* device type is unused for simple devices */
 207         devtype = NULL;
 208
 209         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb, blob_data(attr), blob_len(attr));
 210         dev = device_get(name, true);
 211         if (!dev)
 212                 return NULL;
 213
 214         dev->set_state = simple_device_set_state;
 215         device_init_settings(dev, tb);
 216
 217         return dev;
 218 }
 219
 220 static void simple_device_free(struct device *dev)
 221 {
 222         if (dev->parent.dev)
 223                 device_remove_user(&dev->parent);
 224         free(dev);
 225 }
 226
 227 struct device_type simple_device_type = {
 228         .name = "Network device",
 229         .config_params = &device_attr_list,
 230
 231         .create = simple_device_create,
 232         .check_state = system_if_check,
 233         .free = simple_device_free,
 234 };
 235
 236 void
 237 device_merge_settings(struct device *dev, struct device_settings *n)
 238 {
 239         struct device_settings *os = &dev->orig_settings;
 240         struct device_settings *s = &dev->settings;
 241
 242         memset(n, 0, sizeof(*n));
 243         n->mtu = s->flags & DEV_OPT_MTU ? s->mtu : os->mtu;
 244         n->mtu6 = s->flags & DEV_OPT_MTU6 ? s->mtu6 : os->mtu6;
 245         n->txqueuelen = s->flags & DEV_OPT_TXQUEUELEN ?
 246                 s->txqueuelen : os->txqueuelen;
 247         memcpy(n->macaddr,
 248                 (s->flags & (DEV_OPT_MACADDR|DEV_OPT_DEFAULT_MACADDR) ? s->macaddr : os->macaddr),
 249                 sizeof(n->macaddr));
 250         n->ipv6 = s->flags & DEV_OPT_IPV6 ? s->ipv6 : os->ipv6;
 251         n->ip6segmentrouting = s->flags & DEV_OPT_IP6SEGMENTROUTING ? s->ip6segmentrouting : os->ip6segmentrouting;
 252         n->promisc = s->flags & DEV_OPT_PROMISC ? s->promisc : os->promisc;
 253         n->rpfilter = s->flags & DEV_OPT_RPFILTER ? s->rpfilter : os->rpfilter;
 254         n->acceptlocal = s->flags & DEV_OPT_ACCEPTLOCAL ? s->acceptlocal : os->acceptlocal;
 255         n->igmpversion = s->flags & DEV_OPT_IGMPVERSION ? s->igmpversion : os->igmpversion;
 256         n->mldversion = s->flags & DEV_OPT_MLDVERSION ? s->mldversion : os->mldversion;
 257         n->neigh4reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 258                 s->neigh4reachabletime : os->neigh4reachabletime;
 259         n->neigh6reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
 260                 s->neigh6reachabletime : os->neigh6reachabletime;
 261         n->neigh4gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 262                 s->neigh4gcstaletime : os->neigh4gcstaletime;
 263         n->neigh6gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
 264                 s->neigh6gcstaletime : os->neigh6gcstaletime;
 265         n->neigh4locktime = s->flags & DEV_OPT_NEIGHLOCKTIME ?
 266                 s->neigh4locktime : os->neigh4locktime;
 267         n->dadtransmits = s->flags & DEV_OPT_DADTRANSMITS ?
 268                 s->dadtransmits : os->dadtransmits;
 269         n->multicast = s->flags & DEV_OPT_MULTICAST ?
 270                 s->multicast : os->multicast;
 271         n->multicast_to_unicast = s->multicast_to_unicast;
 272         n->multicast_router = s->multicast_router;
 273         n->multicast_fast_leave = s->multicast_fast_leave;
 274         n->learning = s->learning;
 275         n->unicast_flood = s->unicast_flood;
 276         n->sendredirects = s->flags & DEV_OPT_SENDREDIRECTS ?
 277                 s->sendredirects : os->sendredirects;
 278         n->drop_v4_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST ?
 279                 s->drop_v4_unicast_in_l2_multicast : os->drop_v4_unicast_in_l2_multicast;
 280         n->drop_v6_unicast_in_l2_multicast = s->flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST ?
 281                 s->drop_v6_unicast_in_l2_multicast : os->drop_v6_unicast_in_l2_multicast;
 282         n->drop_gratuitous_arp = s->flags & DEV_OPT_DROP_GRATUITOUS_ARP ?
 283                 s->drop_gratuitous_arp : os->drop_gratuitous_arp;
 284         n->drop_unsolicited_na = s->flags & DEV_OPT_DROP_UNSOLICITED_NA ?
 285                 s->drop_unsolicited_na : os->drop_unsolicited_na;
 286         n->arp_accept = s->flags & DEV_OPT_ARP_ACCEPT ?
 287                 s->arp_accept : os->arp_accept;
 288         n->auth = s->flags & DEV_OPT_AUTH ? s->auth : os->auth;
 289         n->speed = s->flags & DEV_OPT_SPEED ? s->speed : os->speed;
 290         n->duplex = s->flags & DEV_OPT_DUPLEX ? s->duplex : os->duplex;
 291         n->pause = s->flags & DEV_OPT_PAUSE ? s->pause : os->pause;
 292         n->asym_pause = s->flags & DEV_OPT_ASYM_PAUSE ? s->asym_pause : os->asym_pause;
 293         n->rxpause = s->flags & DEV_OPT_RXPAUSE ? s->rxpause : os->rxpause;
 294         n->txpause = s->flags & DEV_OPT_TXPAUSE ? s->txpause : os->txpause;
 295         n->autoneg = s->flags & DEV_OPT_AUTONEG ? s->autoneg : os->autoneg;
 296         n->flags = s->flags | os->flags | os->valid_flags;
 297 }
 298
 299 static bool device_fill_vlan_range(struct device_vlan_range *r, const char *val)
 300 {
 301         unsigned long cur_start, cur_end;
 302         char *sep;
 303
 304         cur_start = strtoul(val, &sep, 0);
 305         cur_end = cur_start;
 306
 307         if (*sep == '-')
 308                 cur_end = strtoul(sep + 1, &sep, 0);
 309         if (*sep || cur_end < cur_start)
 310                 return false;
 311
 312         r->start = cur_start;
 313         r->end = cur_end;
 314
 315         return true;
 316 }
 317
 318 static void
 319 device_set_extra_vlans(struct device *dev, struct blob_attr *data)
 320 {
 321         struct blob_attr *cur;
 322         int n_vlans;
 323         size_t rem;
 324
 325         dev->n_extra_vlan = 0;
 326         if (!data)
 327                 return;
 328
 329         n_vlans = blobmsg_check_array(data, BLOBMSG_TYPE_STRING);
 330         if (n_vlans < 1)
 331                 return;
 332
 333         dev->extra_vlan = realloc(dev->extra_vlan, n_vlans * sizeof(*dev->extra_vlan));
 334         blobmsg_for_each_attr(cur, data, rem)
 335                 if (device_fill_vlan_range(&dev->extra_vlan[dev->n_extra_vlan],
 336                                            blobmsg_get_string(cur)))
 337                         dev->n_extra_vlan++;
 338 }
 339
 340 void
 341 device_init_settings(struct device *dev, struct blob_attr **tb)
 342 {
 343         struct device_settings *s = &dev->settings;
 344         struct blob_attr *cur;
 345         struct ether_addr *ea;
 346         bool disabled = false;
 347
 348         s->flags = 0;
 349         if ((cur = tb[DEV_ATTR_ENABLED]))
 350                 disabled = !blobmsg_get_bool(cur);
 351
 352         if ((cur = tb[DEV_ATTR_MTU]) && blobmsg_get_u32(cur) >= 68) {
 353                 s->mtu = blobmsg_get_u32(cur);
 354                 s->flags |= DEV_OPT_MTU;
 355         }
 356
 357         if ((cur = tb[DEV_ATTR_MTU6]) && blobmsg_get_u32(cur) >= 1280) {
 358                 s->mtu6 = blobmsg_get_u32(cur);
 359                 s->flags |= DEV_OPT_MTU6;
 360         }
 361
 362         if ((cur = tb[DEV_ATTR_TXQUEUELEN])) {
 363                 s->txqueuelen = blobmsg_get_u32(cur);
 364                 s->flags |= DEV_OPT_TXQUEUELEN;
 365         }
 366
 367         if ((cur = tb[DEV_ATTR_MACADDR])) {
 368                 ea = ether_aton(blobmsg_data(cur));
 369                 if (ea) {
 370                         memcpy(s->macaddr, ea, 6);
 371                         s->flags |= DEV_OPT_MACADDR;
 372                 }
 373         }
 374
 375         if ((cur = tb[DEV_ATTR_IPV6])) {
 376                 s->ipv6 = blobmsg_get_bool(cur);
 377                 s->flags |= DEV_OPT_IPV6;
 378         }
 379
 380         if ((cur = tb[DEV_ATTR_IP6SEGMENTROUTING])) {
 381                 s->ip6segmentrouting = blobmsg_get_bool(cur);
 382                 s->flags |= DEV_OPT_IP6SEGMENTROUTING;
 383         }
 384
 385         if ((cur = tb[DEV_ATTR_PROMISC])) {
 386                 s->promisc = blobmsg_get_bool(cur);
 387                 s->flags |= DEV_OPT_PROMISC;
 388         }
 389
 390         if ((cur = tb[DEV_ATTR_RPFILTER])) {
 391                 if (system_resolve_rpfilter(blobmsg_data(cur), &s->rpfilter))
 392                         s->flags |= DEV_OPT_RPFILTER;
 393                 else
 394                         DPRINTF("Failed to resolve rpfilter: %s\n", (char *) blobmsg_data(cur));
 395         }
 396
 397         if ((cur = tb[DEV_ATTR_ACCEPTLOCAL])) {
 398                 s->acceptlocal = blobmsg_get_bool(cur);
 399                 s->flags |= DEV_OPT_ACCEPTLOCAL;
 400         }
 401
 402         if ((cur = tb[DEV_ATTR_IGMPVERSION])) {
 403                 s->igmpversion = blobmsg_get_u32(cur);
 404                 if (s->igmpversion >= 1 && s->igmpversion <= 3)
 405                         s->flags |= DEV_OPT_IGMPVERSION;
 406                 else
 407                         DPRINTF("Failed to resolve igmpversion: %d\n", blobmsg_get_u32(cur));
 408         }
 409
 410         if ((cur = tb[DEV_ATTR_MLDVERSION])) {
 411                 s->mldversion = blobmsg_get_u32(cur);
 412                 if (s->mldversion >= 1 && s->mldversion <= 2)
 413                         s->flags |= DEV_OPT_MLDVERSION;
 414                 else
 415                         DPRINTF("Failed to resolve mldversion: %d\n", blobmsg_get_u32(cur));
 416         }
 417
 418         if ((cur = tb[DEV_ATTR_NEIGHREACHABLETIME])) {
 419                 s->neigh6reachabletime = s->neigh4reachabletime = blobmsg_get_u32(cur);
 420                 s->flags |= DEV_OPT_NEIGHREACHABLETIME;
 421         }
 422
 423         if ((cur = tb[DEV_ATTR_NEIGHGCSTALETIME])) {
 424                 s->neigh6gcstaletime = s->neigh4gcstaletime = blobmsg_get_u32(cur);
 425                 s->flags |= DEV_OPT_NEIGHGCSTALETIME;
 426         }
 427
 428         if ((cur = tb[DEV_ATTR_NEIGHLOCKTIME])) {
 429                 s->neigh4locktime = blobmsg_get_u32(cur);
 430                 s->flags |= DEV_OPT_NEIGHLOCKTIME;
 431         }
 432
 433         if ((cur = tb[DEV_ATTR_DADTRANSMITS])) {
 434                 s->dadtransmits = blobmsg_get_u32(cur);
 435                 s->flags |= DEV_OPT_DADTRANSMITS;
 436         }
 437
 438         if ((cur = tb[DEV_ATTR_MULTICAST_TO_UNICAST])) {
 439                 s->multicast_to_unicast = blobmsg_get_bool(cur);
 440                 s->flags |= DEV_OPT_MULTICAST_TO_UNICAST;
 441         }
 442
 443         if ((cur = tb[DEV_ATTR_MULTICAST_ROUTER])) {
 444                 s->multicast_router = blobmsg_get_u32(cur);
 445                 if (s->multicast_router <= 2)
 446                         s->flags |= DEV_OPT_MULTICAST_ROUTER;
 447                 else
 448                         DPRINTF("Invalid value: %d - (Use 0: never, 1: learn, 2: always)\n", blobmsg_get_u32(cur));
 449         }
 450
 451         if ((cur = tb[DEV_ATTR_MULTICAST_FAST_LEAVE])) {
 452                 s->multicast_fast_leave = blobmsg_get_bool(cur);
 453                 s->flags |= DEV_OPT_MULTICAST_FAST_LEAVE;
 454         }
 455
 456         if ((cur = tb[DEV_ATTR_MULTICAST])) {
 457                 s->multicast = blobmsg_get_bool(cur);
 458                 s->flags |= DEV_OPT_MULTICAST;
 459         }
 460
 461         if ((cur = tb[DEV_ATTR_LEARNING])) {
 462                 s->learning = blobmsg_get_bool(cur);
 463                 s->flags |= DEV_OPT_LEARNING;
 464         }
 465
 466         if ((cur = tb[DEV_ATTR_UNICAST_FLOOD])) {
 467                 s->unicast_flood = blobmsg_get_bool(cur);
 468                 s->flags |= DEV_OPT_UNICAST_FLOOD;
 469         }
 470
 471         if ((cur = tb[DEV_ATTR_SENDREDIRECTS])) {
 472                 s->sendredirects = blobmsg_get_bool(cur);
 473                 s->flags |= DEV_OPT_SENDREDIRECTS;
 474         }
 475
 476         if ((cur = tb[DEV_ATTR_ISOLATE])) {
 477                 s->isolate = blobmsg_get_bool(cur);
 478                 s->flags |= DEV_OPT_ISOLATE;
 479         }
 480
 481         if ((cur = tb[DEV_ATTR_DROP_V4_UNICAST_IN_L2_MULTICAST])) {
 482                 s->drop_v4_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 483                 s->flags |= DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST;
 484         }
 485
 486         if ((cur = tb[DEV_ATTR_DROP_V6_UNICAST_IN_L2_MULTICAST])) {
 487                 s->drop_v6_unicast_in_l2_multicast = blobmsg_get_bool(cur);
 488                 s->flags |= DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST;
 489         }
 490
 491         if ((cur = tb[DEV_ATTR_DROP_GRATUITOUS_ARP])) {
 492                 s->drop_gratuitous_arp = blobmsg_get_bool(cur);
 493                 s->flags |= DEV_OPT_DROP_GRATUITOUS_ARP;
 494         }
 495
 496         if ((cur = tb[DEV_ATTR_DROP_UNSOLICITED_NA])) {
 497                 s->drop_unsolicited_na = blobmsg_get_bool(cur);
 498                 s->flags |= DEV_OPT_DROP_UNSOLICITED_NA;
 499         }
 500
 501         if ((cur = tb[DEV_ATTR_ARP_ACCEPT])) {
 502                 s->arp_accept = blobmsg_get_bool(cur);
 503                 s->flags |= DEV_OPT_ARP_ACCEPT;
 504         }
 505
 506         if ((cur = tb[DEV_ATTR_AUTH])) {
 507                 s->auth = blobmsg_get_bool(cur);
 508                 s->flags |= DEV_OPT_AUTH;
 509         }
 510
 511         if ((cur = tb[DEV_ATTR_SPEED])) {
 512                 s->speed = blobmsg_get_u32(cur);
 513                 s->flags |= DEV_OPT_SPEED;
 514         }
 515
 516         if ((cur = tb[DEV_ATTR_DUPLEX])) {
 517                 s->duplex = blobmsg_get_bool(cur);
 518                 s->flags |= DEV_OPT_DUPLEX;
 519         }
 520
 521         if ((cur = tb[DEV_ATTR_PAUSE])) {
 522                 s->pause = blobmsg_get_bool(cur);
 523                 s->flags |= DEV_OPT_PAUSE;
 524         }
 525
 526         if ((cur = tb[DEV_ATTR_ASYM_PAUSE])) {
 527                 s->asym_pause = blobmsg_get_bool(cur);
 528                 s->flags |= DEV_OPT_ASYM_PAUSE;
 529         }
 530
 531         if ((cur = tb[DEV_ATTR_RXPAUSE])) {
 532                 s->rxpause = blobmsg_get_bool(cur);
 533                 s->flags |= DEV_OPT_RXPAUSE;
 534         }
 535
 536         if ((cur = tb[DEV_ATTR_TXPAUSE])) {
 537                 s->txpause = blobmsg_get_bool(cur);
 538                 s->flags |= DEV_OPT_TXPAUSE;
 539         }
 540
 541         if ((cur = tb[DEV_ATTR_AUTONEG])) {
 542                 s->autoneg = blobmsg_get_bool(cur);
 543                 s->flags |= DEV_OPT_AUTONEG;
 544         }
 545         device_set_extra_vlans(dev, tb[DEV_ATTR_VLAN]);
 546         device_set_disabled(dev, disabled);
 547 }
 548
 549 static void __init dev_init(void)
 550 {
 551         avl_init(&devices, avl_strcmp, true, NULL);
 552 }
 553
 554 static int device_release_cb(void *ctx, struct safe_list *list)
 555 {
 556         struct device_user *dep = container_of(list, struct device_user, list);
 557
 558         if (!dep->dev || !dep->claimed)
 559                 return 0;
 560
 561         device_release(dep);
 562         return 0;
 563 }
 564
 565 static int device_broadcast_cb(void *ctx, struct safe_list *list)
 566 {
 567         struct device_user *dep = container_of(list, struct device_user, list);
 568         int *ev = ctx;
 569
 570         /* device might have been removed by an earlier callback */
 571         if (!dep->dev)
 572                 return 0;
 573
 574         if (dep->cb)
 575                 dep->cb(dep, *ev);
 576         return 0;
 577 }
 578
 579 void device_broadcast_event(struct device *dev, enum device_event ev)
 580 {
 581         static const char * const event_names[] = {
 582                 [DEV_EVENT_ADD] = "add",
 583                 [DEV_EVENT_REMOVE] = "remove",
 584                 [DEV_EVENT_UP] = "up",
 585                 [DEV_EVENT_DOWN] = "down",
 586                 [DEV_EVENT_AUTH_UP] = "auth_up",
 587                 [DEV_EVENT_LINK_UP] = "link_up",
 588                 [DEV_EVENT_LINK_DOWN] = "link_down",
 589                 [DEV_EVENT_TOPO_CHANGE] = "topo_change",
 590         };
 591         int dev_ev = ev;
 592
 593         safe_list_for_each(&dev->aliases, device_broadcast_cb, &dev_ev);
 594         safe_list_for_each(&dev->users, device_broadcast_cb, &dev_ev);
 595
 596         if (ev >= ARRAY_SIZE(event_names) || !event_names[ev] || !dev->ifname[0])
 597                 return;
 598
 599         blob_buf_init(&b, 0);
 600         blobmsg_add_string(&b, "name", dev->ifname);
 601         blobmsg_add_u8(&b, "auth_status", dev->auth_status);
 602         blobmsg_add_u8(&b, "present", dev->present);
 603         blobmsg_add_u8(&b, "active", dev->active);
 604         blobmsg_add_u8(&b, "link_active", dev->link_active);
 605         netifd_ubus_device_notify(event_names[ev], b.head, -1);
 606 }
 607
 608 static void
 609 device_fill_default_settings(struct device *dev)
 610 {
 611         struct device_settings *s = &dev->settings;
 612         struct ether_addr *ea;
 613
 614         if (!(s->flags & DEV_OPT_MACADDR)) {
 615                 ea = config_get_default_macaddr(dev->ifname);
 616                 if (ea) {
 617                         memcpy(s->macaddr, ea, 6);
 618                         s->flags |= DEV_OPT_DEFAULT_MACADDR;
 619                 }
 620         }
 621 }
 622
 623 int device_claim(struct device_user *dep)
 624 {
 625         struct device *dev = dep->dev;
 626         int ret = 0;
 627
 628         if (dep->claimed)
 629                 return 0;
 630
 631         if (!dev)
 632                 return -1;
 633
 634         dep->claimed = true;
 635         D(DEVICE, "Claim %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active + 1);
 636         if (++dev->active != 1)
 637                 return 0;
 638
 639         device_broadcast_event(dev, DEV_EVENT_SETUP);
 640         device_fill_default_settings(dev);
 641         if (dev->external) {
 642                 /* Get ifindex for external claimed devices so a valid   */
 643                 /* ifindex is in place avoiding possible race conditions */
 644                 device_set_ifindex(dev, system_if_resolve(dev));
 645                 if (!dev->ifindex)
 646                         ret = -1;
 647
 648                 system_if_get_settings(dev, &dev->orig_settings);
 649         } else
 650                 ret = dev->set_state(dev, true);
 651
 652         if (ret == 0)
 653                 device_broadcast_event(dev, DEV_EVENT_UP);
 654         else {
 655                 D(DEVICE, "claim %s %s failed: %d\n", dev->type->name, dev->ifname, ret);
 656                 dev->active = 0;
 657                 dep->claimed = false;
 658         }
 659
 660         return ret;
 661 }
 662
 663 void device_release(struct device_user *dep)
 664 {
 665         struct device *dev = dep->dev;
 666
 667         if (!dep->claimed)
 668                 return;
 669
 670         dep->claimed = false;
 671         dev->active--;
 672         D(DEVICE, "Release %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active);
 673         assert(dev->active >= 0);
 674
 675         if (dev->active)
 676                 return;
 677
 678         device_broadcast_event(dev, DEV_EVENT_TEARDOWN);
 679         if (!dev->external)
 680                 dev->set_state(dev, false);
 681
 682         if (dev->active)
 683                 return;
 684
 685         device_broadcast_event(dev, DEV_EVENT_DOWN);
 686 }
 687
 688 int device_check_state(struct device *dev)
 689 {
 690         if (!dev->type->check_state)
 691                 return simple_device_type.check_state(dev);
 692
 693         return dev->type->check_state(dev);
 694 }
 695
 696 int device_init_virtual(struct device *dev, struct device_type *type, const char *name)
 697 {
 698         assert(dev);
 699         assert(type);
 700
 701         D(DEVICE, "Initialize device '%s'\n", name ? name : "");
 702         INIT_SAFE_LIST(&dev->users);
 703         INIT_SAFE_LIST(&dev->aliases);
 704         dev->type = type;
 705
 706         if (name) {
 707                 int ret;
 708
 709                 ret = device_set_ifname(dev, name);
 710                 if (ret < 0)
 711                         return ret;
 712         }
 713
 714         if (!dev->set_state)
 715                 dev->set_state = set_device_state;
 716
 717         return 0;
 718 }
 719
 720 int device_init(struct device *dev, struct device_type *type, const char *ifname)
 721 {
 722         int ret;
 723
 724         ret = device_init_virtual(dev, type, ifname);
 725         if (ret < 0)
 726                 return ret;
 727
 728         dev->avl.key = dev->ifname;
 729
 730         ret = avl_insert(&devices, &dev->avl);
 731         if (ret < 0)
 732                 return ret;
 733
 734         system_if_clear_state(dev);
 735
 736         return 0;
 737 }
 738
 739 static struct device *
 740 device_create_default(const char *name, bool external)
 741 {
 742         struct device *dev;
 743
 744         if (!external && system_if_force_external(name))
 745                 return NULL;
 746
 747         D(DEVICE, "Create simple device '%s'\n", name);
 748         dev = calloc(1, sizeof(*dev));
 749         if (!dev)
 750                 return NULL;
 751
 752         dev->external = external;
 753         dev->set_state = simple_device_set_state;
 754
 755         if (device_init(dev, &simple_device_type, name) < 0) {
 756                 device_cleanup(dev);
 757                 free(dev);
 758                 return NULL;
 759         }
 760
 761         dev->default_config = true;
 762         if (external)
 763                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 764
 765         device_check_state(dev);
 766
 767         return dev;
 768 }
 769
 770 struct device *
 771 device_find(const char *name)
 772 {
 773         struct device *dev;
 774
 775         return avl_find_element(&devices, name, dev, avl);
 776 }
 777
 778 struct device *
 779 __device_get(const char *name, int create, bool check_vlan)
 780 {
 781         struct device *dev;
 782
 783         dev = avl_find_element(&devices, name, dev, avl);
 784
 785         if (!dev && check_vlan && strchr(name, '.'))
 786                 return get_vlan_device_chain(name, create);
 787
 788         if (name[0] == '@')
 789                 return device_alias_get(name + 1);
 790
 791         if (dev) {
 792                 if (create > 1 && !dev->external) {
 793                         system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
 794                         dev->external = true;
 795                         device_set_present(dev, true);
 796                 }
 797                 return dev;
 798         }
 799
 800         if (!create)
 801                 return NULL;
 802
 803         return device_create_default(name, create > 1);
 804 }
 805
 806 static void
 807 device_delete(struct device *dev)
 808 {
 809         if (!dev->avl.key)
 810                 return;
 811
 812         D(DEVICE, "Delete device '%s' from list\n", dev->ifname);
 813         avl_delete(&devices, &dev->avl);
 814         dev->avl.key = NULL;
 815 }
 816
 817 static int device_cleanup_cb(void *ctx, struct safe_list *list)
 818 {
 819         struct device_user *dep = container_of(list, struct device_user, list);
 820         if (dep->cb)
 821                 dep->cb(dep, DEV_EVENT_REMOVE);
 822
 823         device_release(dep);
 824         return 0;
 825 }
 826
 827 void device_cleanup(struct device *dev)
 828 {
 829         D(DEVICE, "Clean up device '%s'\n", dev->ifname);
 830         safe_list_for_each(&dev->users, device_cleanup_cb, NULL);
 831         safe_list_for_each(&dev->aliases, device_cleanup_cb, NULL);
 832         device_delete(dev);
 833 }
 834
 835 static void __device_set_present(struct device *dev, bool state)
 836 {
 837         if (dev->present == state)
 838                 return;
 839
 840         dev->present = state;
 841         device_broadcast_event(dev, state ? DEV_EVENT_ADD : DEV_EVENT_REMOVE);
 842 }
 843
 844 void
 845 device_refresh_present(struct device *dev)
 846 {
 847         bool state = dev->sys_present;
 848
 849         if (dev->disabled || dev->deferred)
 850                 state = false;
 851
 852         __device_set_present(dev, state);
 853 }
 854
 855 void
 856 device_set_auth_status(struct device *dev, bool value, struct blob_attr *vlans)
 857 {
 858         if (!value)
 859                 vlans = NULL;
 860         else if (!blob_attr_equal(vlans, dev->auth_vlans))
 861                 device_set_auth_status(dev, false, NULL);
 862
 863         free(dev->auth_vlans);
 864         dev->auth_vlans = vlans ? blob_memdup(vlans) : NULL;
 865
 866         if (dev->auth_status == value)
 867                 return;
 868
 869         dev->auth_status = value;
 870         if (!dev->present)
 871                 return;
 872
 873         if (dev->auth_status) {
 874                 device_broadcast_event(dev, DEV_EVENT_AUTH_UP);
 875                 return;
 876         }
 877
 878         device_broadcast_event(dev, DEV_EVENT_LINK_DOWN);
 879         if (!dev->link_active)
 880                 return;
 881
 882         device_broadcast_event(dev, DEV_EVENT_LINK_UP);
 883 }
 884
 885 void device_set_present(struct device *dev, bool state)
 886 {
 887         if (dev->sys_present == state)
 888                 return;
 889
 890         D(DEVICE, "%s '%s' %s present\n", dev->type->name, dev->ifname, state ? "is now" : "is no longer" );
 891         dev->sys_present = state;
 892         device_refresh_present(dev);
 893         if (!state)
 894                 safe_list_for_each(&dev->users, device_release_cb, NULL);
 895 }
 896
 897 void device_set_link(struct device *dev, bool state)
 898 {
 899         if (dev->link_active == state)
 900                 return;
 901
 902         netifd_log_message(L_NOTICE, "%s '%s' link is %s\n", dev->type->name, dev->ifname, state ? "up" : "down" );
 903
 904         dev->link_active = state;
 905         if (!state)
 906                 dev->auth_status = false;
 907         device_broadcast_event(dev, state ? DEV_EVENT_LINK_UP : DEV_EVENT_LINK_DOWN);
 908 }
 909
 910 void device_set_ifindex(struct device *dev, int ifindex)
 911 {
 912         if (dev->ifindex == ifindex)
 913                 return;
 914
 915         dev->ifindex = ifindex;
 916         device_broadcast_event(dev, DEV_EVENT_UPDATE_IFINDEX);
 917 }
 918
 919 int device_set_ifname(struct device *dev, const char *name)
 920 {
 921         int ret = 0;
 922
 923         if (!strcmp(dev->ifname, name))
 924                 return 0;
 925
 926         if (strlen(name) > sizeof(dev->ifname) - 1)
 927                 return -1;
 928
 929         if (dev->avl.key)
 930                 avl_delete(&devices, &dev->avl);
 931
 932         strcpy(dev->ifname, name);
 933
 934         if (dev->avl.key)
 935                 ret = avl_insert(&devices, &dev->avl);
 936
 937         if (ret == 0)
 938                 device_broadcast_event(dev, DEV_EVENT_UPDATE_IFNAME);
 939
 940         return ret;
 941 }
 942
 943 static int device_refcount(struct device *dev)
 944 {
 945         struct list_head *list;
 946         int count = 0;
 947
 948         list_for_each(list, &dev->users.list)
 949                 count++;
 950
 951         list_for_each(list, &dev->aliases.list)
 952                 count++;
 953
 954         return count;
 955 }
 956
 957 static void
 958 __device_add_user(struct device_user *dep, struct device *dev)
 959 {
 960         struct safe_list *head;
 961
 962         dep->dev = dev;
 963
 964         if (dep->alias)
 965                 head = &dev->aliases;
 966         else
 967                 head = &dev->users;
 968
 969         safe_list_add(&dep->list, head);
 970         D(DEVICE, "Add user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
 971
 972         if (dep->cb && dev->present) {
 973                 dep->cb(dep, DEV_EVENT_ADD);
 974                 if (dev->active)
 975                         dep->cb(dep, DEV_EVENT_UP);
 976
 977                 if (dev->link_active)
 978                         dep->cb(dep, DEV_EVENT_LINK_UP);
 979         }
 980 }
 981
 982 void device_add_user(struct device_user *dep, struct device *dev)
 983 {
 984         if (dep->dev == dev)
 985                 return;
 986
 987         if (dep->dev)
 988                 device_remove_user(dep);
 989
 990         if (!dev)
 991                 return;
 992
 993         __device_add_user(dep, dev);
 994 }
 995
 996 static void
 997 device_free(struct device *dev)
 998 {
 999         __devlock++;
1000         free(dev->auth_vlans);
1001         free(dev->config);
1002         device_cleanup(dev);
1003         free(dev->extra_vlan);
1004         dev->type->free(dev);
1005         __devlock--;
1006 }
1007
1008 static void
1009 __device_free_unused(struct uloop_timeout *timeout)
1010 {
1011         struct device *dev, *tmp;
1012
1013         avl_for_each_element_safe(&devices, dev, avl, tmp) {
1014                 if (!safe_list_empty(&dev->users) ||
1015                         !safe_list_empty(&dev->aliases) ||
1016                         dev->current_config)
1017                         continue;
1018
1019                 device_free(dev);
1020         }
1021 }
1022
1023 void device_free_unused(void)
1024 {
1025         static struct uloop_timeout free_timer = {
1026                 .cb = __device_free_unused,
1027         };
1028
1029         uloop_timeout_set(&free_timer, 1);
1030 }
1031
1032 void device_remove_user(struct device_user *dep)
1033 {
1034         struct device *dev = dep->dev;
1035
1036         if (!dep->dev)
1037                 return;
1038
1039         dep->hotplug = false;
1040         if (dep->claimed)
1041                 device_release(dep);
1042
1043         safe_list_del(&dep->list);
1044         dep->dev = NULL;
1045         D(DEVICE, "Remove user for device '%s', refcount=%d\n", dev->ifname, device_refcount(dev));
1046         device_free_unused();
1047 }
1048
1049 void
1050 device_init_pending(void)
1051 {
1052         struct device *dev, *tmp;
1053
1054         avl_for_each_element_safe(&devices, dev, avl, tmp) {
1055                 if (!dev->config_pending)
1056                         continue;
1057
1058                 dev->type->config_init(dev);
1059                 dev->config_pending = false;
1060                 device_check_state(dev);
1061         }
1062 }
1063
1064 bool
1065 device_check_ip6segmentrouting(void)
1066 {
1067         struct device *dev;
1068         bool ip6segmentrouting = false;
1069
1070         avl_for_each_element(&devices, dev, avl)
1071                 ip6segmentrouting |= dev->settings.ip6segmentrouting;
1072
1073         return ip6segmentrouting;
1074 }
1075
1076 static enum dev_change_type
1077 device_set_config(struct device *dev, struct device_type *type,
1078                   struct blob_attr *attr)
1079 {
1080         struct blob_attr *tb[__DEV_ATTR_MAX];
1081         const struct uci_blob_param_list *cfg = type->config_params;
1082
1083         if (type != dev->type)
1084                 return DEV_CONFIG_RECREATE;
1085
1086         if (dev->type->reload)
1087                 return dev->type->reload(dev, attr);
1088
1089         if (uci_blob_check_equal(dev->config, attr, cfg))
1090                 return DEV_CONFIG_NO_CHANGE;
1091
1092         if (cfg == &device_attr_list) {
1093                 memset(tb, 0, sizeof(tb));
1094
1095                 if (attr)
1096                         blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb,
1097                                 blob_data(attr), blob_len(attr));
1098
1099                 device_init_settings(dev, tb);
1100                 return DEV_CONFIG_RESTART;
1101         } else
1102                 return DEV_CONFIG_RECREATE;
1103 }
1104
1105 enum dev_change_type
1106 device_apply_config(struct device *dev, struct device_type *type,
1107                     struct blob_attr *config)
1108 {
1109         enum dev_change_type change;
1110
1111         change = device_set_config(dev, type, config);
1112         if (dev->external) {
1113                 system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
1114                 change = DEV_CONFIG_APPLIED;
1115         }
1116
1117         switch (change) {
1118                 case DEV_CONFIG_RESTART:
1119                 case DEV_CONFIG_APPLIED:
1120                         D(DEVICE, "Device '%s': config applied\n", dev->ifname);
1121                         config = blob_memdup(config);
1122                         free(dev->config);
1123                         dev->config = config;
1124                         if (change == DEV_CONFIG_RESTART && dev->present) {
1125                                 int ret = 0;
1126
1127                                 device_set_present(dev, false);
1128                                 if (dev->active && !dev->external) {
1129                                         ret = dev->set_state(dev, false);
1130                                         if (!ret)
1131                                                 ret = dev->set_state(dev, true);
1132                                 }
1133                                 if (!ret)
1134                                         device_set_present(dev, true);
1135                         }
1136                         break;
1137                 case DEV_CONFIG_NO_CHANGE:
1138                         D(DEVICE, "Device '%s': no configuration change\n", dev->ifname);
1139                         break;
1140                 case DEV_CONFIG_RECREATE:
1141                         break;
1142         }
1143
1144         return change;
1145 }
1146
1147 static void
1148 device_replace(struct device *dev, struct device *odev)
1149 {
1150         struct device_user *dep;
1151
1152         __devlock++;
1153         if (odev->present)
1154                 device_set_present(odev, false);
1155
1156         while (!list_empty(&odev->users.list)) {
1157                 dep = list_first_entry(&odev->users.list, struct device_user, list.list);
1158                 device_release(dep);
1159                 if (!dep->dev)
1160                         continue;
1161
1162                 safe_list_del(&dep->list);
1163                 __device_add_user(dep, dev);
1164         }
1165         __devlock--;
1166
1167         device_free(odev);
1168 }
1169
1170 void
1171 device_reset_config(void)
1172 {
1173         struct device *dev;
1174
1175         avl_for_each_element(&devices, dev, avl)
1176                 dev->current_config = false;
1177 }
1178
1179 void
1180 device_reset_old(void)
1181 {
1182         struct device *dev, *tmp, *ndev;
1183
1184         avl_for_each_element_safe(&devices, dev, avl, tmp) {
1185                 if (dev->current_config || dev->default_config)
1186                         continue;
1187
1188                 if (dev->type != &simple_device_type)
1189                         continue;
1190
1191                 ndev = device_create_default(dev->ifname, dev->external);
1192                 if (!ndev)
1193                         continue;
1194
1195                 device_replace(ndev, dev);
1196         }
1197 }
1198
1199 struct device *
1200 device_create(const char *name, struct device_type *type,
1201               struct blob_attr *config)
1202 {
1203         struct device *odev = NULL, *dev;
1204         enum dev_change_type change;
1205
1206         odev = device_find(name);
1207         if (odev) {
1208                 odev->current_config = true;
1209                 change = device_apply_config(odev, type, config);
1210                 switch (change) {
1211                 case DEV_CONFIG_RECREATE:
1212                         D(DEVICE, "Device '%s': recreate device\n", odev->ifname);
1213                         device_delete(odev);
1214                         break;
1215                 default:
1216                         return odev;
1217                 }
1218         } else
1219                 D(DEVICE, "Create new device '%s' (%s)\n", name, type->name);
1220
1221         config = blob_memdup(config);
1222         if (!config)
1223                 return NULL;
1224
1225         dev = type->create(name, type, config);
1226         if (!dev)
1227                 return NULL;
1228
1229         dev->current_config = true;
1230         dev->config = config;
1231         if (odev)
1232                 device_replace(dev, odev);
1233
1234         if (!config_init && dev->config_pending) {
1235                 type->config_init(dev);
1236                 dev->config_pending = false;
1237         }
1238
1239         device_check_state(dev);
1240
1241         return dev;
1242 }
1243
1244 void
1245 device_dump_status(struct blob_buf *b, struct device *dev)
1246 {
1247         struct device_settings st;
1248         void *c, *s;
1249
1250         if (!dev) {
1251                 avl_for_each_element(&devices, dev, avl) {
1252                         if (!dev->present)
1253                                 continue;
1254                         c = blobmsg_open_table(b, dev->ifname);
1255                         device_dump_status(b, dev);
1256                         blobmsg_close_table(b, c);
1257                 }
1258
1259                 return;
1260         }
1261
1262         blobmsg_add_u8(b, "external", dev->external);
1263         blobmsg_add_u8(b, "present", dev->present);
1264         blobmsg_add_string(b, "type", dev->type->name);
1265
1266         if (!dev->present)
1267                 return;
1268
1269         blobmsg_add_u8(b, "up", !!dev->active);
1270         blobmsg_add_u8(b, "carrier", !!dev->link_active);
1271         blobmsg_add_u8(b, "auth_status", !!dev->auth_status);
1272
1273         if (dev->type->dump_info)
1274                 dev->type->dump_info(dev, b);
1275         else
1276                 system_if_dump_info(dev, b);
1277
1278         if (dev->active) {
1279                 device_merge_settings(dev, &st);
1280                 if (st.flags & DEV_OPT_MTU)
1281                         blobmsg_add_u32(b, "mtu", st.mtu);
1282                 if (st.flags & DEV_OPT_MTU6)
1283                         blobmsg_add_u32(b, "mtu6", st.mtu6);
1284                 if (st.flags & DEV_OPT_MACADDR)
1285                         blobmsg_add_string(b, "macaddr", format_macaddr(st.macaddr));
1286                 if (st.flags & DEV_OPT_TXQUEUELEN)
1287                         blobmsg_add_u32(b, "txqueuelen", st.txqueuelen);
1288                 if (st.flags & DEV_OPT_IPV6)
1289                         blobmsg_add_u8(b, "ipv6", st.ipv6);
1290                 if (st.flags & DEV_OPT_IP6SEGMENTROUTING)
1291                         blobmsg_add_u8(b, "ip6segmentrouting", st.ip6segmentrouting);
1292                 if (st.flags & DEV_OPT_PROMISC)
1293                         blobmsg_add_u8(b, "promisc", st.promisc);
1294                 if (st.flags & DEV_OPT_RPFILTER)
1295                         blobmsg_add_u32(b, "rpfilter", st.rpfilter);
1296                 if (st.flags & DEV_OPT_ACCEPTLOCAL)
1297                         blobmsg_add_u8(b, "acceptlocal", st.acceptlocal);
1298                 if (st.flags & DEV_OPT_IGMPVERSION)
1299                         blobmsg_add_u32(b, "igmpversion", st.igmpversion);
1300                 if (st.flags & DEV_OPT_MLDVERSION)
1301                         blobmsg_add_u32(b, "mldversion", st.mldversion);
1302                 if (st.flags & DEV_OPT_NEIGHREACHABLETIME) {
1303                         blobmsg_add_u32(b, "neigh4reachabletime", st.neigh4reachabletime);
1304                         blobmsg_add_u32(b, "neigh6reachabletime", st.neigh6reachabletime);
1305                 }
1306                 if (st.flags & DEV_OPT_NEIGHGCSTALETIME) {
1307                         blobmsg_add_u32(b, "neigh4gcstaletime", st.neigh4gcstaletime);
1308                         blobmsg_add_u32(b, "neigh6gcstaletime", st.neigh6gcstaletime);
1309                 }
1310                 if (st.flags & DEV_OPT_NEIGHLOCKTIME)
1311                         blobmsg_add_u32(b, "neigh4locktime", st.neigh4locktime);
1312                 if (st.flags & DEV_OPT_DADTRANSMITS)
1313                         blobmsg_add_u32(b, "dadtransmits", st.dadtransmits);
1314                 if (st.flags & DEV_OPT_MULTICAST_TO_UNICAST)
1315                         blobmsg_add_u8(b, "multicast_to_unicast", st.multicast_to_unicast);
1316                 if (st.flags & DEV_OPT_MULTICAST_ROUTER)
1317                         blobmsg_add_u32(b, "multicast_router", st.multicast_router);
1318                 if (st.flags & DEV_OPT_MULTICAST_FAST_LEAVE)
1319                         blobmsg_add_u8(b, "multicast_fast_leave", st.multicast_fast_leave);
1320                 if (st.flags & DEV_OPT_MULTICAST)
1321                         blobmsg_add_u8(b, "multicast", st.multicast);
1322                 if (st.flags & DEV_OPT_LEARNING)
1323                         blobmsg_add_u8(b, "learning", st.learning);
1324                 if (st.flags & DEV_OPT_UNICAST_FLOOD)
1325                         blobmsg_add_u8(b, "unicast_flood", st.unicast_flood);
1326                 if (st.flags & DEV_OPT_SENDREDIRECTS)
1327                         blobmsg_add_u8(b, "sendredirects", st.sendredirects);
1328                 if (st.flags & DEV_OPT_DROP_V4_UNICAST_IN_L2_MULTICAST)
1329                         blobmsg_add_u8(b, "drop_v4_unicast_in_l2_multicast", st.drop_v4_unicast_in_l2_multicast);
1330                 if (st.flags & DEV_OPT_DROP_V6_UNICAST_IN_L2_MULTICAST)
1331                         blobmsg_add_u8(b, "drop_v6_unicast_in_l2_multicast", st.drop_v6_unicast_in_l2_multicast);
1332                 if (st.flags & DEV_OPT_DROP_GRATUITOUS_ARP)
1333                         blobmsg_add_u8(b, "drop_gratuitous_arp", st.drop_gratuitous_arp);
1334                 if (st.flags & DEV_OPT_DROP_UNSOLICITED_NA)
1335                         blobmsg_add_u8(b, "drop_unsolicited_na", st.drop_unsolicited_na);
1336                 if (st.flags & DEV_OPT_ARP_ACCEPT)
1337                         blobmsg_add_u8(b, "arp_accept", st.arp_accept);
1338                 if (st.flags & DEV_OPT_AUTH)
1339                         blobmsg_add_u8(b, "auth", st.auth);
1340         }
1341
1342         s = blobmsg_open_table(b, "statistics");
1343         if (dev->type->dump_stats)
1344                 dev->type->dump_stats(dev, b);
1345         else
1346                 system_if_dump_stats(dev, b);
1347         blobmsg_close_table(b, s);
1348 }
1349
1350 static void __init simple_device_type_init(void)
1351 {
1352         device_type_add(&simple_device_type);
1353 }
1354
1355 void device_hotplug_event(const char *name, bool add)
1356 {
1357         struct device *dev;
1358
1359         wireless_device_hotplug_event(name, add);
1360
1361         dev = device_find(name);
1362         if (!dev || dev->type != &simple_device_type)
1363                 return;
1364
1365         device_set_present(dev, add);
1366 }