iwinfo.c

   1 /*
   2  * rpcd - UBUS RPC server
   3  *
   4  *   Copyright (C) 2013-2014 Jo-Philipp Wich <jow@openwrt.org>
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20 #include <dirent.h>
  21 #include <libubus.h>
  22 #include <iwinfo.h>
  23 #include <iwinfo/utils.h>
  24
  25 #include <rpcd/plugin.h>
  26
  27
  28 static struct blob_buf buf;
  29 static const struct iwinfo_ops *iw;
  30 static const char *ifname;
  31
  32 enum {
  33         RPC_D_DEVICE,
  34         __RPC_D_MAX,
  35 };
  36
  37 static const struct blobmsg_policy rpc_device_policy[__RPC_D_MAX] = {
  38         [RPC_D_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
  39 };
  40
  41
  42 static int
  43 rpc_iwinfo_open(struct blob_attr *msg)
  44 {
  45         static struct blob_attr *tb[__RPC_D_MAX];
  46
  47         blobmsg_parse(rpc_device_policy, __RPC_D_MAX, tb,
  48                       blob_data(msg), blob_len(msg));
  49
  50         if (!tb[RPC_D_DEVICE])
  51                 return UBUS_STATUS_INVALID_ARGUMENT;
  52
  53         ifname = blobmsg_data(tb[RPC_D_DEVICE]);
  54         iw = iwinfo_backend(ifname);
  55
  56         return iw ? UBUS_STATUS_OK : UBUS_STATUS_NOT_FOUND;
  57 }
  58
  59 static void
  60 rpc_iwinfo_close(void)
  61 {
  62         iw = NULL;
  63         ifname = NULL;
  64         iwinfo_finish();
  65 }
  66
  67 static void
  68 rpc_iwinfo_call_int(const char *name, int (*func)(const char *, int *),
  69                     const char **map)
  70 {
  71         int rv;
  72
  73         if (!func(ifname, &rv))
  74         {
  75                 if (!map)
  76                         blobmsg_add_u32(&buf, name, rv);
  77                 else
  78                         blobmsg_add_string(&buf, name, map[rv]);
  79         }
  80 }
  81
  82 static void
  83 rpc_iwinfo_call_hardware_id(const char *name)
  84 {
  85         struct iwinfo_hardware_id ids;
  86         void *c;
  87
  88         if (!iw->hardware_id(ifname, (char *)&ids))
  89         {
  90                 c = blobmsg_open_array(&buf, name);
  91
  92                 blobmsg_add_u32(&buf, NULL, ids.vendor_id);
  93                 blobmsg_add_u32(&buf, NULL, ids.device_id);
  94                 blobmsg_add_u32(&buf, NULL, ids.subsystem_vendor_id);
  95                 blobmsg_add_u32(&buf, NULL, ids.subsystem_device_id);
  96
  97                 blobmsg_close_array(&buf, c);
  98         }
  99 }
 100
 101 static void
 102 rpc_iwinfo_add_encryption(const char *name, struct iwinfo_crypto_entry *e)
 103 {
 104         int ciph;
 105         void *c, *d;
 106
 107         c = blobmsg_open_table(&buf, name);
 108
 109         blobmsg_add_u8(&buf, "enabled", e->enabled);
 110
 111         if (e->enabled)
 112         {
 113                 if (!e->wpa_version)
 114                 {
 115                         d = blobmsg_open_array(&buf, "wep");
 116
 117                         if (e->auth_algs & IWINFO_AUTH_OPEN)
 118                                 blobmsg_add_string(&buf, NULL, "open");
 119
 120                         if (e->auth_algs & IWINFO_AUTH_SHARED)
 121                                 blobmsg_add_string(&buf, NULL, "shared");
 122
 123                         blobmsg_close_array(&buf, d);
 124                 }
 125                 else
 126                 {
 127                         d = blobmsg_open_array(&buf, "wpa");
 128
 129                         if (e->wpa_version > 2)
 130                         {
 131                                 blobmsg_add_u32(&buf, NULL, 1);
 132                                 blobmsg_add_u32(&buf, NULL, 2);
 133                         }
 134                         else
 135                         {
 136                                 blobmsg_add_u32(&buf, NULL, e->wpa_version);
 137                         }
 138
 139                         blobmsg_close_array(&buf, d);
 140
 141
 142                         d = blobmsg_open_array(&buf, "authentication");
 143
 144                         if (e->auth_suites & IWINFO_KMGMT_PSK)
 145                                 blobmsg_add_string(&buf, NULL, "psk");
 146
 147                         if (e->auth_suites & IWINFO_KMGMT_8021x)
 148                                 blobmsg_add_string(&buf, NULL, "802.1x");
 149
 150                         if (!e->auth_suites ||
 151                                 (e->auth_suites & IWINFO_KMGMT_NONE))
 152                                 blobmsg_add_string(&buf, NULL, "none");
 153
 154                         blobmsg_close_array(&buf, d);
 155                 }
 156
 157                 d = blobmsg_open_array(&buf, "ciphers");
 158                 ciph = e->pair_ciphers | e->group_ciphers;
 159
 160                 if (ciph & IWINFO_CIPHER_WEP40)
 161                         blobmsg_add_string(&buf, NULL, "wep-40");
 162
 163                 if (ciph & IWINFO_CIPHER_WEP104)
 164                         blobmsg_add_string(&buf, NULL, "wep-104");
 165
 166                 if (ciph & IWINFO_CIPHER_TKIP)
 167                         blobmsg_add_string(&buf, NULL, "tkip");
 168
 169                 if (ciph & IWINFO_CIPHER_CCMP)
 170                         blobmsg_add_string(&buf, NULL, "ccmp");
 171
 172                 if (ciph & IWINFO_CIPHER_WRAP)
 173                         blobmsg_add_string(&buf, NULL, "wrap");
 174
 175                 if (ciph & IWINFO_CIPHER_AESOCB)
 176                         blobmsg_add_string(&buf, NULL, "aes-ocb");
 177
 178                 if (ciph & IWINFO_CIPHER_CKIP)
 179                         blobmsg_add_string(&buf, NULL, "ckip");
 180
 181                 if (!ciph || (ciph & IWINFO_CIPHER_NONE))
 182                         blobmsg_add_string(&buf, NULL, "none");
 183
 184                 blobmsg_close_array(&buf, d);
 185         }
 186
 187         blobmsg_close_table(&buf, c);
 188 }
 189
 190 static void
 191 rpc_iwinfo_call_encryption(const char *name)
 192 {
 193         struct iwinfo_crypto_entry crypto = { 0 };
 194
 195         if (!iw->encryption(ifname, (char *)&crypto))
 196                 rpc_iwinfo_add_encryption(name, &crypto);
 197 }
 198
 199 static void
 200 rpc_iwinfo_call_hwmodes(const char *name)
 201 {
 202         int modes;
 203         void *c;
 204
 205         if (!iw->hwmodelist(ifname, &modes))
 206         {
 207                 c = blobmsg_open_array(&buf, name);
 208
 209                 if (modes & IWINFO_80211_A)
 210                         blobmsg_add_string(&buf, NULL, "a");
 211
 212                 if (modes & IWINFO_80211_B)
 213                         blobmsg_add_string(&buf, NULL, "b");
 214
 215                 if (modes & IWINFO_80211_G)
 216                         blobmsg_add_string(&buf, NULL, "g");
 217
 218                 if (modes & IWINFO_80211_N)
 219                         blobmsg_add_string(&buf, NULL, "n");
 220
 221                 blobmsg_close_array(&buf, c);
 222         }
 223 }
 224
 225 static void
 226 rpc_iwinfo_call_str(const char *name, int (*func)(const char *, char *))
 227 {
 228         char rv[IWINFO_BUFSIZE] = { 0 };
 229
 230         if (!func(ifname, rv))
 231                 blobmsg_add_string(&buf, name, rv);
 232 }
 233
 234 static int
 235 rpc_iwinfo_info(struct ubus_context *ctx, struct ubus_object *obj,
 236                 struct ubus_request_data *req, const char *method,
 237                 struct blob_attr *msg)
 238 {
 239         int rv;
 240         void *c;
 241
 242         rv = rpc_iwinfo_open(msg);
 243
 244         if (rv)
 245                 return rv;
 246
 247         blob_buf_init(&buf, 0);
 248
 249         rpc_iwinfo_call_str("phy", iw->phyname);
 250
 251         rpc_iwinfo_call_str("ssid", iw->ssid);
 252         rpc_iwinfo_call_str("bssid", iw->bssid);
 253         rpc_iwinfo_call_str("country", iw->country);
 254
 255         rpc_iwinfo_call_int("mode", iw->mode, IWINFO_OPMODE_NAMES);
 256         rpc_iwinfo_call_int("channel", iw->channel, NULL);
 257
 258         rpc_iwinfo_call_int("frequency", iw->frequency, NULL);
 259         rpc_iwinfo_call_int("frequency_offset", iw->frequency_offset, NULL);
 260
 261         rpc_iwinfo_call_int("txpower", iw->txpower, NULL);
 262         rpc_iwinfo_call_int("txpower_offset", iw->txpower_offset, NULL);
 263
 264         rpc_iwinfo_call_int("quality", iw->quality, NULL);
 265         rpc_iwinfo_call_int("quality_max", iw->quality_max, NULL);
 266
 267         rpc_iwinfo_call_int("signal", iw->signal, NULL);
 268         rpc_iwinfo_call_int("noise", iw->noise, NULL);
 269
 270         rpc_iwinfo_call_int("bitrate", iw->bitrate, NULL);
 271
 272         rpc_iwinfo_call_encryption("encryption");
 273         rpc_iwinfo_call_hwmodes("hwmodes");
 274
 275         c = blobmsg_open_table(&buf, "hardware");
 276         rpc_iwinfo_call_hardware_id("id");
 277         rpc_iwinfo_call_str("name", iw->hardware_name);
 278         blobmsg_close_table(&buf, c);
 279
 280         ubus_send_reply(ctx, req, buf.head);
 281
 282         rpc_iwinfo_close();
 283
 284         return UBUS_STATUS_OK;
 285 }
 286
 287 static int
 288 rpc_iwinfo_scan(struct ubus_context *ctx, struct ubus_object *obj,
 289                 struct ubus_request_data *req, const char *method,
 290                 struct blob_attr *msg)
 291 {
 292         int i, rv, len;
 293         void *c, *d;
 294         char mac[18];
 295         char res[IWINFO_BUFSIZE];
 296         struct iwinfo_scanlist_entry *e;
 297
 298         rv = rpc_iwinfo_open(msg);
 299
 300         if (rv)
 301                 return rv;
 302
 303         blob_buf_init(&buf, 0);
 304
 305         c = blobmsg_open_array(&buf, "results");
 306
 307         if (!iw->scanlist(ifname, res, &len) && (len > 0))
 308         {
 309                 for (i = 0; i < len; i += sizeof(struct iwinfo_scanlist_entry))
 310                 {
 311                         e = (struct iwinfo_scanlist_entry *)&res[i];
 312                         d = blobmsg_open_table(&buf, NULL);
 313
 314                         if (e->ssid[0])
 315                                 blobmsg_add_string(&buf, "ssid", (const char *)e->ssid);
 316
 317                         snprintf(mac, sizeof(mac), "%02X:%02X:%02X:%02X:%02X:%02X",
 318                                          e->mac[0], e->mac[1], e->mac[2],
 319                                          e->mac[3], e->mac[4], e->mac[5]);
 320
 321                         blobmsg_add_string(&buf, "bssid", mac);
 322
 323                         blobmsg_add_string(&buf, "mode", IWINFO_OPMODE_NAMES[e->mode]);
 324
 325                         blobmsg_add_u32(&buf, "channel", e->channel);
 326                         blobmsg_add_u32(&buf, "signal", (uint32_t)(e->signal - 0x100));
 327
 328                         blobmsg_add_u32(&buf, "quality", e->quality);
 329                         blobmsg_add_u32(&buf, "quality_max", e->quality_max);
 330
 331                         rpc_iwinfo_add_encryption("encryption", &e->crypto);
 332
 333                         blobmsg_close_table(&buf, d);
 334                 }
 335         }
 336
 337         blobmsg_close_array(&buf, c);
 338
 339         ubus_send_reply(ctx, req, buf.head);
 340
 341         rpc_iwinfo_close();
 342
 343         return UBUS_STATUS_OK;
 344 }
 345
 346 static int
 347 rpc_iwinfo_assoclist(struct ubus_context *ctx, struct ubus_object *obj,
 348                      struct ubus_request_data *req, const char *method,
 349                      struct blob_attr *msg)
 350 {
 351         int i, rv, len;
 352         char mac[18];
 353         char res[IWINFO_BUFSIZE];
 354         struct iwinfo_assoclist_entry *a;
 355         void *c, *d, *e;
 356
 357         rv = rpc_iwinfo_open(msg);
 358
 359         if (rv)
 360                 return rv;
 361
 362         blob_buf_init(&buf, 0);
 363
 364         c = blobmsg_open_array(&buf, "results");
 365
 366         if (!iw->assoclist(ifname, res, &len) && (len > 0))
 367         {
 368                 for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry))
 369                 {
 370                         a = (struct iwinfo_assoclist_entry *)&res[i];
 371                         d = blobmsg_open_table(&buf, NULL);
 372
 373                         snprintf(mac, sizeof(mac), "%02X:%02X:%02X:%02X:%02X:%02X",
 374                                          a->mac[0], a->mac[1], a->mac[2],
 375                                          a->mac[3], a->mac[4], a->mac[5]);
 376
 377                         blobmsg_add_string(&buf, "mac", mac);
 378                         blobmsg_add_u32(&buf, "signal", a->signal);
 379                         blobmsg_add_u32(&buf, "noise", a->noise);
 380                         blobmsg_add_u32(&buf, "inactive", a->inactive);
 381
 382                         e = blobmsg_open_table(&buf, "rx");
 383                         blobmsg_add_u32(&buf, "rate", a->rx_rate.rate);
 384                         blobmsg_add_u32(&buf, "mcs",  a->rx_rate.mcs);
 385                         blobmsg_add_u8(&buf, "40mhz", a->rx_rate.is_40mhz);
 386                         blobmsg_add_u8(&buf, "short_gi", a->rx_rate.is_short_gi);
 387                         blobmsg_close_table(&buf, e);
 388
 389                         e = blobmsg_open_table(&buf, "tx");
 390                         blobmsg_add_u32(&buf, "rate", a->tx_rate.rate);
 391                         blobmsg_add_u32(&buf, "mcs",  a->tx_rate.mcs);
 392                         blobmsg_add_u8(&buf, "40mhz", a->tx_rate.is_40mhz);
 393                         blobmsg_add_u8(&buf, "short_gi", a->tx_rate.is_short_gi);
 394                         blobmsg_close_table(&buf, e);
 395
 396                         blobmsg_close_table(&buf, d);
 397                 }
 398         }
 399
 400         blobmsg_close_array(&buf, c);
 401
 402         ubus_send_reply(ctx, req, buf.head);
 403
 404         rpc_iwinfo_close();
 405
 406         return UBUS_STATUS_OK;
 407 }
 408
 409 static int
 410 rpc_iwinfo_freqlist(struct ubus_context *ctx, struct ubus_object *obj,
 411                     struct ubus_request_data *req, const char *method,
 412                     struct blob_attr *msg)
 413 {
 414         int i, rv, len, ch;
 415         char res[IWINFO_BUFSIZE];
 416         struct iwinfo_freqlist_entry *f;
 417         void *c, *d;
 418
 419         rv = rpc_iwinfo_open(msg);
 420
 421         if (rv)
 422                 return rv;
 423
 424         blob_buf_init(&buf, 0);
 425
 426         c = blobmsg_open_array(&buf, "results");
 427
 428         if (!iw->freqlist(ifname, res, &len) && (len > 0))
 429         {
 430                 if (iw->channel(ifname, &ch))
 431                         ch = -1;
 432
 433                 for (i = 0; i < len; i += sizeof(struct iwinfo_freqlist_entry))
 434                 {
 435                         f = (struct iwinfo_freqlist_entry *)&res[i];
 436                         d = blobmsg_open_table(&buf, NULL);
 437
 438                         blobmsg_add_u32(&buf, "channel", f->channel);
 439                         blobmsg_add_u32(&buf, "mhz", f->mhz);
 440                         blobmsg_add_u8(&buf, "restricted", f->restricted);
 441
 442                         if (ch > -1)
 443                                 blobmsg_add_u8(&buf, "active", f->channel == ch);
 444
 445                         blobmsg_close_table(&buf, d);
 446                 }
 447         }
 448
 449         blobmsg_close_array(&buf, c);
 450
 451         ubus_send_reply(ctx, req, buf.head);
 452
 453         rpc_iwinfo_close();
 454
 455         return UBUS_STATUS_OK;
 456 }
 457
 458 static int
 459 rpc_iwinfo_txpowerlist(struct ubus_context *ctx, struct ubus_object *obj,
 460                        struct ubus_request_data *req, const char *method,
 461                        struct blob_attr *msg)
 462 {
 463         int i, rv, len, pwr, off;
 464         char res[IWINFO_BUFSIZE];
 465         struct iwinfo_txpwrlist_entry *t;
 466         void *c, *d;
 467
 468         rv = rpc_iwinfo_open(msg);
 469
 470         if (rv)
 471                 return rv;
 472
 473         blob_buf_init(&buf, 0);
 474
 475         c = blobmsg_open_array(&buf, "results");
 476
 477         if (!iw->txpwrlist(ifname, res, &len) && (len > 0))
 478         {
 479                 if (iw->txpower(ifname, &pwr))
 480                         pwr = -1;
 481
 482                 if (iw->txpower_offset(ifname, &off))
 483                         off = 0;
 484
 485                 for (i = 0; i < len; i += sizeof(struct iwinfo_txpwrlist_entry))
 486                 {
 487                         t = (struct iwinfo_txpwrlist_entry *)&res[i];
 488                         d = blobmsg_open_table(&buf, NULL);
 489
 490                         blobmsg_add_u32(&buf, "dbm", t->dbm + off);
 491                         blobmsg_add_u32(&buf, "mw", iwinfo_dbm2mw(t->dbm + off));
 492
 493                         if (pwr > -1)
 494                                 blobmsg_add_u8(&buf, "active", t->dbm == pwr);
 495
 496                         blobmsg_close_table(&buf, d);
 497                 }
 498         }
 499
 500         blobmsg_close_array(&buf, c);
 501
 502         ubus_send_reply(ctx, req, buf.head);
 503
 504         rpc_iwinfo_close();
 505
 506         return UBUS_STATUS_OK;
 507 }
 508
 509 static const char *
 510 rpc_iwinfo_lookup_country(char *buf, int len, int iso3166)
 511 {
 512         int i;
 513         static char ccode[5];
 514         struct iwinfo_country_entry *c;
 515
 516         for (i = 0; i < len; i += sizeof(struct iwinfo_country_entry))
 517         {
 518                 c = (struct iwinfo_country_entry *)&buf[i];
 519
 520                 if (c->iso3166 == iso3166)
 521                 {
 522                         snprintf(ccode, sizeof(ccode), "%s", c->ccode);
 523                         return ccode;
 524                 }
 525         }
 526
 527         return NULL;
 528 }
 529
 530 static int
 531 rpc_iwinfo_countrylist(struct ubus_context *ctx, struct ubus_object *obj,
 532                        struct ubus_request_data *req, const char *method,
 533                        struct blob_attr *msg)
 534 {
 535         int rv, len;
 536         char cur[3];
 537         char iso3166[3];
 538         char res[IWINFO_BUFSIZE];
 539         const char *ccode;
 540         const struct iwinfo_iso3166_label *l;
 541         void *c, *d;
 542
 543         rv = rpc_iwinfo_open(msg);
 544
 545         if (rv)
 546                 return rv;
 547
 548         blob_buf_init(&buf, 0);
 549
 550         c = blobmsg_open_array(&buf, "results");
 551
 552         if (!iw->countrylist(ifname, res, &len) && (len > 0))
 553         {
 554                 if (iw->country(ifname, cur))
 555                         memset(cur, 0, sizeof(cur));
 556
 557                 for (l = IWINFO_ISO3166_NAMES; l->iso3166; l++)
 558                 {
 559                         ccode = rpc_iwinfo_lookup_country(res, len, l->iso3166);
 560
 561                         if (!ccode)
 562                                 continue;
 563
 564                         d = blobmsg_open_table(&buf, NULL);
 565
 566                         blobmsg_add_string(&buf, "code", ccode);
 567                         blobmsg_add_string(&buf, "country", (const char *)l->name);
 568
 569                         snprintf(iso3166, sizeof(iso3166), "%c%c",
 570                                  (l->iso3166 / 256), (l->iso3166 % 256));
 571
 572                         blobmsg_add_string(&buf, "iso3166", iso3166);
 573
 574                         if (cur[0])
 575                                 blobmsg_add_u8(&buf, "active", !strncmp(ccode, cur, 2));
 576
 577                         blobmsg_close_table(&buf, d);
 578                 }
 579         }
 580
 581         blobmsg_close_array(&buf, c);
 582
 583         ubus_send_reply(ctx, req, buf.head);
 584
 585         rpc_iwinfo_close();
 586
 587         return UBUS_STATUS_OK;
 588 }
 589
 590 static int
 591 rpc_iwinfo_devices(struct ubus_context *ctx, struct ubus_object *obj,
 592                    struct ubus_request_data *req, const char *method,
 593                    struct blob_attr *msg)
 594 {
 595         void *c;
 596         struct dirent *e;
 597         DIR *d;
 598
 599         d = opendir("/sys/class/net");
 600
 601         if (!d)
 602                 return UBUS_STATUS_UNKNOWN_ERROR;
 603
 604         blob_buf_init(&buf, 0);
 605
 606         c = blobmsg_open_array(&buf, "devices");
 607
 608         while ((e = readdir(d)) != NULL)
 609         {
 610                 if (e->d_type != DT_LNK)
 611                         continue;
 612
 613                 if (iwinfo_type(e->d_name))
 614                         blobmsg_add_string(&buf, NULL, e->d_name);
 615         }
 616
 617         blobmsg_close_array(&buf, c);
 618
 619         closedir(d);
 620
 621         ubus_send_reply(ctx, req, buf.head);
 622
 623         rpc_iwinfo_close();
 624
 625         return UBUS_STATUS_OK;
 626 }
 627
 628
 629 static int
 630 rpc_iwinfo_api_init(const struct rpc_daemon_ops *o, struct ubus_context *ctx)
 631 {
 632         static const struct ubus_method iwinfo_methods[] = {
 633                 { .name = "devices", .handler = rpc_iwinfo_devices },
 634                 UBUS_METHOD("info",        rpc_iwinfo_info,        rpc_device_policy),
 635                 UBUS_METHOD("scan",        rpc_iwinfo_scan,        rpc_device_policy),
 636                 UBUS_METHOD("assoclist",   rpc_iwinfo_assoclist,   rpc_device_policy),
 637                 UBUS_METHOD("freqlist",    rpc_iwinfo_freqlist,    rpc_device_policy),
 638                 UBUS_METHOD("txpowerlist", rpc_iwinfo_txpowerlist, rpc_device_policy),
 639                 UBUS_METHOD("countrylist", rpc_iwinfo_countrylist, rpc_device_policy),
 640         };
 641
 642         static struct ubus_object_type iwinfo_type =
 643                 UBUS_OBJECT_TYPE("luci-rpc-iwinfo", iwinfo_methods);
 644
 645         static struct ubus_object obj = {
 646                 .name = "iwinfo",
 647                 .type = &iwinfo_type,
 648                 .methods = iwinfo_methods,
 649                 .n_methods = ARRAY_SIZE(iwinfo_methods),
 650         };
 651
 652         return ubus_add_object(ctx, &obj);
 653 }
 654
 655 const struct rpc_plugin rpc_plugin = {
 656         .init = rpc_iwinfo_api_init
 657 };