package/libertas/src/assoc.c

   1 /* Copyright (C) 2006, Red Hat, Inc. */
   2
   3 #include <linux/bitops.h>
   4 #include <net/ieee80211.h>
   5 #include <linux/etherdevice.h>
   6
   7 #include "assoc.h"
   8 #include "join.h"
   9 #include "decl.h"
  10 #include "hostcmd.h"
  11 #include "host.h"
  12 #include "cmd.h"
  13
  14
  15 static const u8 bssid_any[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
  16 static const u8 bssid_off[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  17
  18
  19 static int assoc_helper_essid(struct lbs_private *priv,
  20                               struct assoc_request * assoc_req)
  21 {
  22         int ret = 0;
  23         struct bss_descriptor * bss;
  24         int channel = -1;
  25
  26         lbs_deb_enter(LBS_DEB_ASSOC);
  27
  28         /* FIXME: take channel into account when picking SSIDs if a channel
  29          * is set.
  30          */
  31
  32         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
  33                 channel = assoc_req->channel;
  34
  35         lbs_deb_assoc("SSID '%s' requested\n",
  36                       escape_essid(assoc_req->ssid, assoc_req->ssid_len));
  37         if (assoc_req->mode == IW_MODE_INFRA) {
  38                 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
  39                         assoc_req->ssid_len, 0);
  40
  41                 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
  42                                 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
  43                 if (bss != NULL) {
  44                         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
  45                         ret = lbs_associate(priv, assoc_req);
  46                 } else {
  47                         lbs_deb_assoc("SSID not found; cannot associate\n");
  48                 }
  49         } else if (assoc_req->mode == IW_MODE_ADHOC) {
  50                 /* Scan for the network, do not save previous results.  Stale
  51                  *   scan data will cause us to join a non-existant adhoc network
  52                  */
  53                 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
  54                         assoc_req->ssid_len, 1);
  55
  56                 /* Search for the requested SSID in the scan table */
  57                 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
  58                                 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
  59                 if (bss != NULL) {
  60                         lbs_deb_assoc("SSID found, will join\n");
  61                         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
  62                         lbs_join_adhoc_network(priv, assoc_req);
  63                 } else {
  64                         /* else send START command */
  65                         lbs_deb_assoc("SSID not found, creating adhoc network\n");
  66                         memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
  67                                 IW_ESSID_MAX_SIZE);
  68                         assoc_req->bss.ssid_len = assoc_req->ssid_len;
  69                         lbs_start_adhoc_network(priv, assoc_req);
  70                 }
  71         }
  72
  73         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
  74         return ret;
  75 }
  76
  77
  78 static int assoc_helper_bssid(struct lbs_private *priv,
  79                               struct assoc_request * assoc_req)
  80 {
  81         int ret = 0;
  82         struct bss_descriptor * bss;
  83         DECLARE_MAC_BUF(mac);
  84
  85         lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %s",
  86                 print_mac(mac, assoc_req->bssid));
  87
  88         /* Search for index position in list for requested MAC */
  89         bss = lbs_find_bssid_in_list(priv, assoc_req->bssid,
  90                             assoc_req->mode);
  91         if (bss == NULL) {
  92                 lbs_deb_assoc("ASSOC: WAP: BSSID %s not found, "
  93                         "cannot associate.\n", print_mac(mac, assoc_req->bssid));
  94                 goto out;
  95         }
  96
  97         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
  98         if (assoc_req->mode == IW_MODE_INFRA) {
  99                 ret = lbs_associate(priv, assoc_req);
 100                 lbs_deb_assoc("ASSOC: lbs_associate(bssid) returned %d\n", ret);
 101         } else if (assoc_req->mode == IW_MODE_ADHOC) {
 102                 lbs_join_adhoc_network(priv, assoc_req);
 103         }
 104
 105 out:
 106         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 107         return ret;
 108 }
 109
 110
 111 static int assoc_helper_associate(struct lbs_private *priv,
 112                                   struct assoc_request * assoc_req)
 113 {
 114         int ret = 0, done = 0;
 115
 116         lbs_deb_enter(LBS_DEB_ASSOC);
 117
 118         /* If we're given and 'any' BSSID, try associating based on SSID */
 119
 120         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 121                 if (compare_ether_addr(bssid_any, assoc_req->bssid)
 122                     && compare_ether_addr(bssid_off, assoc_req->bssid)) {
 123                         ret = assoc_helper_bssid(priv, assoc_req);
 124                         done = 1;
 125                 }
 126         }
 127
 128         if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 129                 ret = assoc_helper_essid(priv, assoc_req);
 130         }
 131
 132         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 133         return ret;
 134 }
 135
 136
 137 static int assoc_helper_mode(struct lbs_private *priv,
 138                              struct assoc_request * assoc_req)
 139 {
 140         int ret = 0;
 141
 142         lbs_deb_enter(LBS_DEB_ASSOC);
 143
 144         if (assoc_req->mode == priv->mode)
 145                 goto done;
 146
 147         if (assoc_req->mode == IW_MODE_INFRA) {
 148                 if (priv->psstate != PS_STATE_FULL_POWER)
 149                         lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
 150                 priv->psmode = LBS802_11POWERMODECAM;
 151         }
 152
 153         priv->mode = assoc_req->mode;
 154         ret = lbs_prepare_and_send_command(priv,
 155                                     CMD_802_11_SNMP_MIB,
 156                                     0, CMD_OPTION_WAITFORRSP,
 157                                     OID_802_11_INFRASTRUCTURE_MODE,
 158                 /* Shoot me now */  (void *) (size_t) assoc_req->mode);
 159
 160 done:
 161         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 162         return ret;
 163 }
 164
 165
 166 static int update_channel(struct lbs_private *priv)
 167 {
 168         int ret;
 169
 170         /* the channel in f/w could be out of sync, get the current channel */
 171         lbs_deb_enter(LBS_DEB_ASSOC);
 172
 173         ret = lbs_get_channel(priv);
 174         if (ret > 0)
 175                 priv->curbssparams.channel = (u8) ret;
 176
 177         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 178         return ret;
 179 }
 180
 181 void lbs_sync_channel(struct work_struct *work)
 182 {
 183         struct lbs_private *priv = container_of(work, struct lbs_private,
 184                 sync_channel);
 185
 186         lbs_deb_enter(LBS_DEB_ASSOC);
 187         if (update_channel(priv) != 0)
 188                 lbs_pr_info("Channel synchronization failed.");
 189         lbs_deb_leave(LBS_DEB_ASSOC);
 190 }
 191
 192 static int assoc_helper_channel(struct lbs_private *priv,
 193                                 struct assoc_request * assoc_req)
 194 {
 195         int ret = 0;
 196
 197         lbs_deb_enter(LBS_DEB_ASSOC);
 198
 199         ret = update_channel(priv);
 200         if (ret < 0) {
 201                 lbs_deb_assoc("ASSOC: channel: error getting channel.");
 202         }
 203
 204         if (assoc_req->channel == priv->curbssparams.channel)
 205                 goto done;
 206
 207         if (priv->mesh_dev) {
 208                 /* Disconnect mesh while associating -- otherwise it
 209                    won't let us change channels */
 210                 lbs_mesh_config(priv, 0);
 211         }
 212
 213         lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
 214                priv->curbssparams.channel, assoc_req->channel);
 215
 216         ret = lbs_set_channel(priv, assoc_req->channel);
 217         if (ret < 0)
 218                 lbs_deb_assoc("ASSOC: channel: error setting channel.");
 219
 220         /* FIXME: shouldn't need to grab the channel _again_ after setting
 221          * it since the firmware is supposed to return the new channel, but
 222          * whatever... */
 223         ret = update_channel(priv);
 224         if (ret < 0)
 225                 lbs_deb_assoc("ASSOC: channel: error getting channel.");
 226
 227         if (assoc_req->channel != priv->curbssparams.channel) {
 228                 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
 229                               assoc_req->channel);
 230                 goto restore_mesh;
 231         }
 232
 233         if (   assoc_req->secinfo.wep_enabled
 234             &&   (assoc_req->wep_keys[0].len
 235                || assoc_req->wep_keys[1].len
 236                || assoc_req->wep_keys[2].len
 237                || assoc_req->wep_keys[3].len)) {
 238                 /* Make sure WEP keys are re-sent to firmware */
 239                 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
 240         }
 241
 242         /* Must restart/rejoin adhoc networks after channel change */
 243         set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
 244
 245  restore_mesh:
 246         if (priv->mesh_dev)
 247                 lbs_mesh_config(priv, 1);
 248
 249  done:
 250         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 251         return ret;
 252 }
 253
 254
 255 static int assoc_helper_wep_keys(struct lbs_private *priv,
 256                                  struct assoc_request * assoc_req)
 257 {
 258         int i;
 259         int ret = 0;
 260
 261         lbs_deb_enter(LBS_DEB_ASSOC);
 262
 263         /* Set or remove WEP keys */
 264         if (   assoc_req->wep_keys[0].len
 265             || assoc_req->wep_keys[1].len
 266             || assoc_req->wep_keys[2].len
 267             || assoc_req->wep_keys[3].len) {
 268                 ret = lbs_prepare_and_send_command(priv,
 269                                             CMD_802_11_SET_WEP,
 270                                             CMD_ACT_ADD,
 271                                             CMD_OPTION_WAITFORRSP,
 272                                             0, assoc_req);
 273         } else {
 274                 ret = lbs_prepare_and_send_command(priv,
 275                                             CMD_802_11_SET_WEP,
 276                                             CMD_ACT_REMOVE,
 277                                             CMD_OPTION_WAITFORRSP,
 278                                             0, NULL);
 279         }
 280
 281         if (ret)
 282                 goto out;
 283
 284         /* enable/disable the MAC's WEP packet filter */
 285         if (assoc_req->secinfo.wep_enabled)
 286                 priv->currentpacketfilter |= CMD_ACT_MAC_WEP_ENABLE;
 287         else
 288                 priv->currentpacketfilter &= ~CMD_ACT_MAC_WEP_ENABLE;
 289         ret = lbs_set_mac_packet_filter(priv);
 290         if (ret)
 291                 goto out;
 292
 293         mutex_lock(&priv->lock);
 294
 295         /* Copy WEP keys into priv wep key fields */
 296         for (i = 0; i < 4; i++) {
 297                 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
 298                         sizeof(struct enc_key));
 299         }
 300         priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
 301
 302         mutex_unlock(&priv->lock);
 303
 304 out:
 305         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 306         return ret;
 307 }
 308
 309 static int assoc_helper_secinfo(struct lbs_private *priv,
 310                                 struct assoc_request * assoc_req)
 311 {
 312         int ret = 0;
 313         u32 do_wpa;
 314         u32 rsn = 0;
 315
 316         lbs_deb_enter(LBS_DEB_ASSOC);
 317
 318         memcpy(&priv->secinfo, &assoc_req->secinfo,
 319                 sizeof(struct lbs_802_11_security));
 320
 321         ret = lbs_set_mac_packet_filter(priv);
 322         if (ret)
 323                 goto out;
 324
 325         /* If RSN is already enabled, don't try to enable it again, since
 326          * ENABLE_RSN resets internal state machines and will clobber the
 327          * 4-way WPA handshake.
 328          */
 329
 330         /* Get RSN enabled/disabled */
 331         ret = lbs_prepare_and_send_command(priv,
 332                                     CMD_802_11_ENABLE_RSN,
 333                                     CMD_ACT_GET,
 334                                     CMD_OPTION_WAITFORRSP,
 335                                     0, &rsn);
 336         if (ret) {
 337                 lbs_deb_assoc("Failed to get RSN status: %d", ret);
 338                 goto out;
 339         }
 340
 341         /* Don't re-enable RSN if it's already enabled */
 342         do_wpa = (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled);
 343         if (do_wpa == rsn)
 344                 goto out;
 345
 346         /* Set RSN enabled/disabled */
 347         rsn = do_wpa;
 348         ret = lbs_prepare_and_send_command(priv,
 349                                     CMD_802_11_ENABLE_RSN,
 350                                     CMD_ACT_SET,
 351                                     CMD_OPTION_WAITFORRSP,
 352                                     0, &rsn);
 353
 354 out:
 355         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 356         return ret;
 357 }
 358
 359
 360 static int assoc_helper_wpa_keys(struct lbs_private *priv,
 361                                  struct assoc_request * assoc_req)
 362 {
 363         int ret = 0;
 364         unsigned int flags = assoc_req->flags;
 365
 366         lbs_deb_enter(LBS_DEB_ASSOC);
 367
 368         /* Work around older firmware bug where WPA unicast and multicast
 369          * keys must be set independently.  Seen in SDIO parts with firmware
 370          * version 5.0.11p0.
 371          */
 372
 373         if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 374                 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
 375                 ret = lbs_prepare_and_send_command(priv,
 376                                         CMD_802_11_KEY_MATERIAL,
 377                                         CMD_ACT_SET,
 378                                         CMD_OPTION_WAITFORRSP,
 379                                         0, assoc_req);
 380                 assoc_req->flags = flags;
 381         }
 382
 383         if (ret)
 384                 goto out;
 385
 386         if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 387                 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
 388
 389                 ret = lbs_prepare_and_send_command(priv,
 390                                         CMD_802_11_KEY_MATERIAL,
 391                                         CMD_ACT_SET,
 392                                         CMD_OPTION_WAITFORRSP,
 393                                         0, assoc_req);
 394                 assoc_req->flags = flags;
 395         }
 396
 397 out:
 398         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 399         return ret;
 400 }
 401
 402
 403 static int assoc_helper_wpa_ie(struct lbs_private *priv,
 404                                struct assoc_request * assoc_req)
 405 {
 406         int ret = 0;
 407
 408         lbs_deb_enter(LBS_DEB_ASSOC);
 409
 410         if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
 411                 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
 412                 priv->wpa_ie_len = assoc_req->wpa_ie_len;
 413         } else {
 414                 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
 415                 priv->wpa_ie_len = 0;
 416         }
 417
 418         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 419         return ret;
 420 }
 421
 422
 423 static int should_deauth_infrastructure(struct lbs_private *priv,
 424                                         struct assoc_request * assoc_req)
 425 {
 426         int ret = 0;
 427
 428         lbs_deb_enter(LBS_DEB_ASSOC);
 429
 430         if (priv->connect_status != LBS_CONNECTED)
 431                 return 0;
 432
 433         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 434                 lbs_deb_assoc("Deauthenticating due to new SSID\n");
 435                 ret = 1;
 436                 goto out;
 437         }
 438
 439         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 440                 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
 441                         lbs_deb_assoc("Deauthenticating due to new security\n");
 442                         ret = 1;
 443                         goto out;
 444                 }
 445         }
 446
 447         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 448                 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
 449                 ret = 1;
 450                 goto out;
 451         }
 452
 453         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 454                 lbs_deb_assoc("Deauthenticating due to channel switch\n");
 455                 ret = 1;
 456                 goto out;
 457         }
 458
 459         /* FIXME: deal with 'auto' mode somehow */
 460         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 461                 if (assoc_req->mode != IW_MODE_INFRA) {
 462                         lbs_deb_assoc("Deauthenticating due to leaving "
 463                                 "infra mode\n");
 464                         ret = 1;
 465                         goto out;
 466                 }
 467         }
 468
 469 out:
 470         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 471         return 0;
 472 }
 473
 474
 475 static int should_stop_adhoc(struct lbs_private *priv,
 476                              struct assoc_request * assoc_req)
 477 {
 478         lbs_deb_enter(LBS_DEB_ASSOC);
 479
 480         if (priv->connect_status != LBS_CONNECTED)
 481                 return 0;
 482
 483         if (lbs_ssid_cmp(priv->curbssparams.ssid,
 484                               priv->curbssparams.ssid_len,
 485                               assoc_req->ssid, assoc_req->ssid_len) != 0)
 486                 return 1;
 487
 488         /* FIXME: deal with 'auto' mode somehow */
 489         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 490                 if (assoc_req->mode != IW_MODE_ADHOC)
 491                         return 1;
 492         }
 493
 494         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 495                 if (assoc_req->channel != priv->curbssparams.channel)
 496                         return 1;
 497         }
 498
 499         lbs_deb_leave(LBS_DEB_ASSOC);
 500         return 0;
 501 }
 502
 503
 504 void lbs_association_worker(struct work_struct *work)
 505 {
 506         struct lbs_private *priv = container_of(work, struct lbs_private,
 507                 assoc_work.work);
 508         struct assoc_request * assoc_req = NULL;
 509         int ret = 0;
 510         int find_any_ssid = 0;
 511         DECLARE_MAC_BUF(mac);
 512
 513         lbs_deb_enter(LBS_DEB_ASSOC);
 514
 515         mutex_lock(&priv->lock);
 516         assoc_req = priv->pending_assoc_req;
 517         priv->pending_assoc_req = NULL;
 518         priv->in_progress_assoc_req = assoc_req;
 519         mutex_unlock(&priv->lock);
 520
 521         if (!assoc_req)
 522                 goto done;
 523
 524         lbs_deb_assoc(
 525                 "Association Request:\n"
 526                 "    flags:     0x%08lx\n"
 527                 "    SSID:      '%s'\n"
 528                 "    chann:     %d\n"
 529                 "    band:      %d\n"
 530                 "    mode:      %d\n"
 531                 "    BSSID:     %s\n"
 532                 "    secinfo:  %s%s%s\n"
 533                 "    auth_mode: %d\n",
 534                 assoc_req->flags,
 535                 escape_essid(assoc_req->ssid, assoc_req->ssid_len),
 536                 assoc_req->channel, assoc_req->band, assoc_req->mode,
 537                 print_mac(mac, assoc_req->bssid),
 538                 assoc_req->secinfo.WPAenabled ? " WPA" : "",
 539                 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
 540                 assoc_req->secinfo.wep_enabled ? " WEP" : "",
 541                 assoc_req->secinfo.auth_mode);
 542
 543         /* If 'any' SSID was specified, find an SSID to associate with */
 544         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
 545             && !assoc_req->ssid_len)
 546                 find_any_ssid = 1;
 547
 548         /* But don't use 'any' SSID if there's a valid locked BSSID to use */
 549         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 550                 if (compare_ether_addr(assoc_req->bssid, bssid_any)
 551                     && compare_ether_addr(assoc_req->bssid, bssid_off))
 552                         find_any_ssid = 0;
 553         }
 554
 555         if (find_any_ssid) {
 556                 u8 new_mode;
 557
 558                 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
 559                                 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
 560                 if (ret) {
 561                         lbs_deb_assoc("Could not find best network\n");
 562                         ret = -ENETUNREACH;
 563                         goto out;
 564                 }
 565
 566                 /* Ensure we switch to the mode of the AP */
 567                 if (assoc_req->mode == IW_MODE_AUTO) {
 568                         set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
 569                         assoc_req->mode = new_mode;
 570                 }
 571         }
 572
 573         /*
 574          * Check if the attributes being changing require deauthentication
 575          * from the currently associated infrastructure access point.
 576          */
 577         if (priv->mode == IW_MODE_INFRA) {
 578                 if (should_deauth_infrastructure(priv, assoc_req)) {
 579                         ret = lbs_send_deauthentication(priv);
 580                         if (ret) {
 581                                 lbs_deb_assoc("Deauthentication due to new "
 582                                         "configuration request failed: %d\n",
 583                                         ret);
 584                         }
 585                 }
 586         } else if (priv->mode == IW_MODE_ADHOC) {
 587                 if (should_stop_adhoc(priv, assoc_req)) {
 588                         ret = lbs_stop_adhoc_network(priv);
 589                         if (ret) {
 590                                 lbs_deb_assoc("Teardown of AdHoc network due to "
 591                                         "new configuration request failed: %d\n",
 592                                         ret);
 593                         }
 594
 595                 }
 596         }
 597
 598         /* Send the various configuration bits to the firmware */
 599         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 600                 ret = assoc_helper_mode(priv, assoc_req);
 601                 if (ret)
 602                         goto out;
 603         }
 604
 605         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 606                 ret = assoc_helper_channel(priv, assoc_req);
 607                 if (ret)
 608                         goto out;
 609         }
 610
 611         if (   test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
 612             || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
 613                 ret = assoc_helper_wep_keys(priv, assoc_req);
 614                 if (ret)
 615                         goto out;
 616         }
 617
 618         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 619                 ret = assoc_helper_secinfo(priv, assoc_req);
 620                 if (ret)
 621                         goto out;
 622         }
 623
 624         if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 625                 ret = assoc_helper_wpa_ie(priv, assoc_req);
 626                 if (ret)
 627                         goto out;
 628         }
 629
 630         if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)
 631             || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 632                 ret = assoc_helper_wpa_keys(priv, assoc_req);
 633                 if (ret)
 634                         goto out;
 635         }
 636
 637         /* SSID/BSSID should be the _last_ config option set, because they
 638          * trigger the association attempt.
 639          */
 640         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
 641             || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 642                 int success = 1;
 643
 644                 ret = assoc_helper_associate(priv, assoc_req);
 645                 if (ret) {
 646                         lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
 647                                 ret);
 648                         success = 0;
 649                 }
 650
 651                 if (priv->connect_status != LBS_CONNECTED) {
 652                         lbs_deb_assoc("ASSOC: association unsuccessful, "
 653                                 "not connected\n");
 654                         success = 0;
 655                 }
 656
 657                 if (success) {
 658                         lbs_deb_assoc("ASSOC: associated to '%s', %s\n",
 659                                 escape_essid(priv->curbssparams.ssid,
 660                                              priv->curbssparams.ssid_len),
 661                                 print_mac(mac, priv->curbssparams.bssid));
 662                         lbs_prepare_and_send_command(priv,
 663                                 CMD_802_11_RSSI,
 664                                 0, CMD_OPTION_WAITFORRSP, 0, NULL);
 665
 666                         lbs_prepare_and_send_command(priv,
 667                                 CMD_802_11_GET_LOG,
 668                                 0, CMD_OPTION_WAITFORRSP, 0, NULL);
 669                 } else {
 670                         ret = -1;
 671                 }
 672         }
 673
 674 out:
 675         if (ret) {
 676                 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
 677                         ret);
 678         }
 679
 680         mutex_lock(&priv->lock);
 681         priv->in_progress_assoc_req = NULL;
 682         mutex_unlock(&priv->lock);
 683         kfree(assoc_req);
 684
 685 done:
 686         lbs_deb_leave(LBS_DEB_ASSOC);
 687 }
 688
 689
 690 /*
 691  * Caller MUST hold any necessary locks
 692  */
 693 struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
 694 {
 695         struct assoc_request * assoc_req;
 696
 697         lbs_deb_enter(LBS_DEB_ASSOC);
 698         if (!priv->pending_assoc_req) {
 699                 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
 700                                                      GFP_KERNEL);
 701                 if (!priv->pending_assoc_req) {
 702                         lbs_pr_info("Not enough memory to allocate association"
 703                                 " request!\n");
 704                         return NULL;
 705                 }
 706         }
 707
 708         /* Copy current configuration attributes to the association request,
 709          * but don't overwrite any that are already set.
 710          */
 711         assoc_req = priv->pending_assoc_req;
 712         if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 713                 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
 714                        IW_ESSID_MAX_SIZE);
 715                 assoc_req->ssid_len = priv->curbssparams.ssid_len;
 716         }
 717
 718         if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
 719                 assoc_req->channel = priv->curbssparams.channel;
 720
 721         if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
 722                 assoc_req->band = priv->curbssparams.band;
 723
 724         if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
 725                 assoc_req->mode = priv->mode;
 726
 727         if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 728                 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
 729                         ETH_ALEN);
 730         }
 731
 732         if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
 733                 int i;
 734                 for (i = 0; i < 4; i++) {
 735                         memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
 736                                 sizeof(struct enc_key));
 737                 }
 738         }
 739
 740         if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
 741                 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
 742
 743         if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 744                 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
 745                         sizeof(struct enc_key));
 746         }
 747
 748         if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 749                 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
 750                         sizeof(struct enc_key));
 751         }
 752
 753         if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 754                 memcpy(&assoc_req->secinfo, &priv->secinfo,
 755                         sizeof(struct lbs_802_11_security));
 756         }
 757
 758         if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 759                 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
 760                         MAX_WPA_IE_LEN);
 761                 assoc_req->wpa_ie_len = priv->wpa_ie_len;
 762         }
 763
 764         lbs_deb_leave(LBS_DEB_ASSOC);
 765         return assoc_req;
 766 }