drivers/net/wireless/libertas/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 int lbs_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 = ret;
 176                 ret = 0;
 177         }
 178         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 179         return ret;
 180 }
 181
 182 void lbs_sync_channel(struct work_struct *work)
 183 {
 184         struct lbs_private *priv = container_of(work, struct lbs_private,
 185                 sync_channel);
 186
 187         lbs_deb_enter(LBS_DEB_ASSOC);
 188         if (lbs_update_channel(priv))
 189                 lbs_pr_info("Channel synchronization failed.");
 190         lbs_deb_leave(LBS_DEB_ASSOC);
 191 }
 192
 193 static int assoc_helper_channel(struct lbs_private *priv,
 194                                 struct assoc_request * assoc_req)
 195 {
 196         int ret = 0;
 197
 198         lbs_deb_enter(LBS_DEB_ASSOC);
 199
 200         ret = lbs_update_channel(priv);
 201         if (ret) {
 202                 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
 203                 goto done;
 204         }
 205
 206         if (assoc_req->channel == priv->curbssparams.channel)
 207                 goto done;
 208
 209         if (priv->mesh_dev) {
 210                 /* Change mesh channel first; 21.p21 firmware won't let
 211                    you change channel otherwise (even though it'll return
 212                    an error to this */
 213                 lbs_mesh_config(priv, 0, assoc_req->channel);
 214         }
 215
 216         lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
 217                       priv->curbssparams.channel, assoc_req->channel);
 218
 219         ret = lbs_set_channel(priv, assoc_req->channel);
 220         if (ret < 0)
 221                 lbs_deb_assoc("ASSOC: channel: error setting channel.\n");
 222
 223         /* FIXME: shouldn't need to grab the channel _again_ after setting
 224          * it since the firmware is supposed to return the new channel, but
 225          * whatever... */
 226         ret = lbs_update_channel(priv);
 227         if (ret) {
 228                 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
 229                 goto done;
 230         }
 231
 232         if (assoc_req->channel != priv->curbssparams.channel) {
 233                 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
 234                               assoc_req->channel);
 235                 goto restore_mesh;
 236         }
 237
 238         if (   assoc_req->secinfo.wep_enabled
 239             &&   (assoc_req->wep_keys[0].len
 240                || assoc_req->wep_keys[1].len
 241                || assoc_req->wep_keys[2].len
 242                || assoc_req->wep_keys[3].len)) {
 243                 /* Make sure WEP keys are re-sent to firmware */
 244                 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
 245         }
 246
 247         /* Must restart/rejoin adhoc networks after channel change */
 248         set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
 249
 250  restore_mesh:
 251         if (priv->mesh_dev)
 252                 lbs_mesh_config(priv, 1, priv->curbssparams.channel);
 253
 254  done:
 255         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 256         return ret;
 257 }
 258
 259
 260 static int assoc_helper_wep_keys(struct lbs_private *priv,
 261                                  struct assoc_request *assoc_req)
 262 {
 263         int i;
 264         int ret = 0;
 265
 266         lbs_deb_enter(LBS_DEB_ASSOC);
 267
 268         /* Set or remove WEP keys */
 269         if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
 270             assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)
 271                 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req);
 272         else
 273                 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req);
 274
 275         if (ret)
 276                 goto out;
 277
 278         /* enable/disable the MAC's WEP packet filter */
 279         if (assoc_req->secinfo.wep_enabled)
 280                 priv->currentpacketfilter |= CMD_ACT_MAC_WEP_ENABLE;
 281         else
 282                 priv->currentpacketfilter &= ~CMD_ACT_MAC_WEP_ENABLE;
 283
 284         ret = lbs_set_mac_packet_filter(priv);
 285         if (ret)
 286                 goto out;
 287
 288         mutex_lock(&priv->lock);
 289
 290         /* Copy WEP keys into priv wep key fields */
 291         for (i = 0; i < 4; i++) {
 292                 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
 293                        sizeof(struct enc_key));
 294         }
 295         priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
 296
 297         mutex_unlock(&priv->lock);
 298
 299 out:
 300         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 301         return ret;
 302 }
 303
 304 static int assoc_helper_secinfo(struct lbs_private *priv,
 305                                 struct assoc_request * assoc_req)
 306 {
 307         int ret = 0;
 308         uint16_t do_wpa;
 309         uint16_t rsn = 0;
 310
 311         lbs_deb_enter(LBS_DEB_ASSOC);
 312
 313         memcpy(&priv->secinfo, &assoc_req->secinfo,
 314                 sizeof(struct lbs_802_11_security));
 315
 316         ret = lbs_set_mac_packet_filter(priv);
 317         if (ret)
 318                 goto out;
 319
 320         /* If RSN is already enabled, don't try to enable it again, since
 321          * ENABLE_RSN resets internal state machines and will clobber the
 322          * 4-way WPA handshake.
 323          */
 324
 325         /* Get RSN enabled/disabled */
 326         ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn);
 327         if (ret) {
 328                 lbs_deb_assoc("Failed to get RSN status: %d\n", ret);
 329                 goto out;
 330         }
 331
 332         /* Don't re-enable RSN if it's already enabled */
 333         do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled;
 334         if (do_wpa == rsn)
 335                 goto out;
 336
 337         /* Set RSN enabled/disabled */
 338         ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa);
 339
 340 out:
 341         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 342         return ret;
 343 }
 344
 345
 346 static int assoc_helper_wpa_keys(struct lbs_private *priv,
 347                                  struct assoc_request * assoc_req)
 348 {
 349         int ret = 0;
 350         unsigned int flags = assoc_req->flags;
 351
 352         lbs_deb_enter(LBS_DEB_ASSOC);
 353
 354         /* Work around older firmware bug where WPA unicast and multicast
 355          * keys must be set independently.  Seen in SDIO parts with firmware
 356          * version 5.0.11p0.
 357          */
 358
 359         if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 360                 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
 361                 ret = lbs_prepare_and_send_command(priv,
 362                                         CMD_802_11_KEY_MATERIAL,
 363                                         CMD_ACT_SET,
 364                                         CMD_OPTION_WAITFORRSP,
 365                                         0, assoc_req);
 366                 assoc_req->flags = flags;
 367         }
 368
 369         if (ret)
 370                 goto out;
 371
 372         if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 373                 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
 374
 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 out:
 384         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 385         return ret;
 386 }
 387
 388
 389 static int assoc_helper_wpa_ie(struct lbs_private *priv,
 390                                struct assoc_request * assoc_req)
 391 {
 392         int ret = 0;
 393
 394         lbs_deb_enter(LBS_DEB_ASSOC);
 395
 396         if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
 397                 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
 398                 priv->wpa_ie_len = assoc_req->wpa_ie_len;
 399         } else {
 400                 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
 401                 priv->wpa_ie_len = 0;
 402         }
 403
 404         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 405         return ret;
 406 }
 407
 408
 409 static int should_deauth_infrastructure(struct lbs_private *priv,
 410                                         struct assoc_request * assoc_req)
 411 {
 412         int ret = 0;
 413
 414         lbs_deb_enter(LBS_DEB_ASSOC);
 415
 416         if (priv->connect_status != LBS_CONNECTED)
 417                 return 0;
 418
 419         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 420                 lbs_deb_assoc("Deauthenticating due to new SSID\n");
 421                 ret = 1;
 422                 goto out;
 423         }
 424
 425         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 426                 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
 427                         lbs_deb_assoc("Deauthenticating due to new security\n");
 428                         ret = 1;
 429                         goto out;
 430                 }
 431         }
 432
 433         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 434                 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
 435                 ret = 1;
 436                 goto out;
 437         }
 438
 439         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 440                 lbs_deb_assoc("Deauthenticating due to channel switch\n");
 441                 ret = 1;
 442                 goto out;
 443         }
 444
 445         /* FIXME: deal with 'auto' mode somehow */
 446         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 447                 if (assoc_req->mode != IW_MODE_INFRA) {
 448                         lbs_deb_assoc("Deauthenticating due to leaving "
 449                                 "infra mode\n");
 450                         ret = 1;
 451                         goto out;
 452                 }
 453         }
 454
 455 out:
 456         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 457         return 0;
 458 }
 459
 460
 461 static int should_stop_adhoc(struct lbs_private *priv,
 462                              struct assoc_request * assoc_req)
 463 {
 464         lbs_deb_enter(LBS_DEB_ASSOC);
 465
 466         if (priv->connect_status != LBS_CONNECTED)
 467                 return 0;
 468
 469         if (lbs_ssid_cmp(priv->curbssparams.ssid,
 470                               priv->curbssparams.ssid_len,
 471                               assoc_req->ssid, assoc_req->ssid_len) != 0)
 472                 return 1;
 473
 474         /* FIXME: deal with 'auto' mode somehow */
 475         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 476                 if (assoc_req->mode != IW_MODE_ADHOC)
 477                         return 1;
 478         }
 479
 480         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 481                 if (assoc_req->channel != priv->curbssparams.channel)
 482                         return 1;
 483         }
 484
 485         lbs_deb_leave(LBS_DEB_ASSOC);
 486         return 0;
 487 }
 488
 489
 490 void lbs_association_worker(struct work_struct *work)
 491 {
 492         struct lbs_private *priv = container_of(work, struct lbs_private,
 493                 assoc_work.work);
 494         struct assoc_request * assoc_req = NULL;
 495         int ret = 0;
 496         int find_any_ssid = 0;
 497         DECLARE_MAC_BUF(mac);
 498
 499         lbs_deb_enter(LBS_DEB_ASSOC);
 500
 501         mutex_lock(&priv->lock);
 502         assoc_req = priv->pending_assoc_req;
 503         priv->pending_assoc_req = NULL;
 504         priv->in_progress_assoc_req = assoc_req;
 505         mutex_unlock(&priv->lock);
 506
 507         if (!assoc_req)
 508                 goto done;
 509
 510         lbs_deb_assoc(
 511                 "Association Request:\n"
 512                 "    flags:     0x%08lx\n"
 513                 "    SSID:      '%s'\n"
 514                 "    chann:     %d\n"
 515                 "    band:      %d\n"
 516                 "    mode:      %d\n"
 517                 "    BSSID:     %s\n"
 518                 "    secinfo:  %s%s%s\n"
 519                 "    auth_mode: %d\n",
 520                 assoc_req->flags,
 521                 escape_essid(assoc_req->ssid, assoc_req->ssid_len),
 522                 assoc_req->channel, assoc_req->band, assoc_req->mode,
 523                 print_mac(mac, assoc_req->bssid),
 524                 assoc_req->secinfo.WPAenabled ? " WPA" : "",
 525                 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
 526                 assoc_req->secinfo.wep_enabled ? " WEP" : "",
 527                 assoc_req->secinfo.auth_mode);
 528
 529         /* If 'any' SSID was specified, find an SSID to associate with */
 530         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
 531             && !assoc_req->ssid_len)
 532                 find_any_ssid = 1;
 533
 534         /* But don't use 'any' SSID if there's a valid locked BSSID to use */
 535         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 536                 if (compare_ether_addr(assoc_req->bssid, bssid_any)
 537                     && compare_ether_addr(assoc_req->bssid, bssid_off))
 538                         find_any_ssid = 0;
 539         }
 540
 541         if (find_any_ssid) {
 542                 u8 new_mode;
 543
 544                 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
 545                                 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
 546                 if (ret) {
 547                         lbs_deb_assoc("Could not find best network\n");
 548                         ret = -ENETUNREACH;
 549                         goto out;
 550                 }
 551
 552                 /* Ensure we switch to the mode of the AP */
 553                 if (assoc_req->mode == IW_MODE_AUTO) {
 554                         set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
 555                         assoc_req->mode = new_mode;
 556                 }
 557         }
 558
 559         /*
 560          * Check if the attributes being changing require deauthentication
 561          * from the currently associated infrastructure access point.
 562          */
 563         if (priv->mode == IW_MODE_INFRA) {
 564                 if (should_deauth_infrastructure(priv, assoc_req)) {
 565                         ret = lbs_send_deauthentication(priv);
 566                         if (ret) {
 567                                 lbs_deb_assoc("Deauthentication due to new "
 568                                         "configuration request failed: %d\n",
 569                                         ret);
 570                         }
 571                 }
 572         } else if (priv->mode == IW_MODE_ADHOC) {
 573                 if (should_stop_adhoc(priv, assoc_req)) {
 574                         ret = lbs_stop_adhoc_network(priv);
 575                         if (ret) {
 576                                 lbs_deb_assoc("Teardown of AdHoc network due to "
 577                                         "new configuration request failed: %d\n",
 578                                         ret);
 579                         }
 580
 581                 }
 582         }
 583
 584         /* Send the various configuration bits to the firmware */
 585         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 586                 ret = assoc_helper_mode(priv, assoc_req);
 587                 if (ret)
 588                         goto out;
 589         }
 590
 591         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 592                 ret = assoc_helper_channel(priv, assoc_req);
 593                 if (ret)
 594                         goto out;
 595         }
 596
 597         if (   test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
 598             || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
 599                 ret = assoc_helper_wep_keys(priv, assoc_req);
 600                 if (ret)
 601                         goto out;
 602         }
 603
 604         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 605                 ret = assoc_helper_secinfo(priv, assoc_req);
 606                 if (ret)
 607                         goto out;
 608         }
 609
 610         if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 611                 ret = assoc_helper_wpa_ie(priv, assoc_req);
 612                 if (ret)
 613                         goto out;
 614         }
 615
 616         if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)
 617             || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 618                 ret = assoc_helper_wpa_keys(priv, assoc_req);
 619                 if (ret)
 620                         goto out;
 621         }
 622
 623         /* SSID/BSSID should be the _last_ config option set, because they
 624          * trigger the association attempt.
 625          */
 626         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
 627             || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 628                 int success = 1;
 629
 630                 ret = assoc_helper_associate(priv, assoc_req);
 631                 if (ret) {
 632                         lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
 633                                 ret);
 634                         success = 0;
 635                 }
 636
 637                 if (priv->connect_status != LBS_CONNECTED) {
 638                         lbs_deb_assoc("ASSOC: association unsuccessful, "
 639                                 "not connected\n");
 640                         success = 0;
 641                 }
 642
 643                 if (success) {
 644                         lbs_deb_assoc("ASSOC: associated to '%s', %s\n",
 645                                 escape_essid(priv->curbssparams.ssid,
 646                                              priv->curbssparams.ssid_len),
 647                                 print_mac(mac, priv->curbssparams.bssid));
 648                         lbs_prepare_and_send_command(priv,
 649                                 CMD_802_11_RSSI,
 650                                 0, CMD_OPTION_WAITFORRSP, 0, NULL);
 651
 652                         lbs_prepare_and_send_command(priv,
 653                                 CMD_802_11_GET_LOG,
 654                                 0, CMD_OPTION_WAITFORRSP, 0, NULL);
 655                 } else {
 656                         ret = -1;
 657                 }
 658         }
 659
 660 out:
 661         if (ret) {
 662                 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
 663                         ret);
 664         }
 665
 666         mutex_lock(&priv->lock);
 667         priv->in_progress_assoc_req = NULL;
 668         mutex_unlock(&priv->lock);
 669         kfree(assoc_req);
 670
 671 done:
 672         lbs_deb_leave(LBS_DEB_ASSOC);
 673 }
 674
 675
 676 /*
 677  * Caller MUST hold any necessary locks
 678  */
 679 struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
 680 {
 681         struct assoc_request * assoc_req;
 682
 683         lbs_deb_enter(LBS_DEB_ASSOC);
 684         if (!priv->pending_assoc_req) {
 685                 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
 686                                                      GFP_KERNEL);
 687                 if (!priv->pending_assoc_req) {
 688                         lbs_pr_info("Not enough memory to allocate association"
 689                                 " request!\n");
 690                         return NULL;
 691                 }
 692         }
 693
 694         /* Copy current configuration attributes to the association request,
 695          * but don't overwrite any that are already set.
 696          */
 697         assoc_req = priv->pending_assoc_req;
 698         if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 699                 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
 700                        IW_ESSID_MAX_SIZE);
 701                 assoc_req->ssid_len = priv->curbssparams.ssid_len;
 702         }
 703
 704         if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
 705                 assoc_req->channel = priv->curbssparams.channel;
 706
 707         if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
 708                 assoc_req->band = priv->curbssparams.band;
 709
 710         if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
 711                 assoc_req->mode = priv->mode;
 712
 713         if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 714                 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
 715                         ETH_ALEN);
 716         }
 717
 718         if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
 719                 int i;
 720                 for (i = 0; i < 4; i++) {
 721                         memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
 722                                 sizeof(struct enc_key));
 723                 }
 724         }
 725
 726         if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
 727                 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
 728
 729         if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 730                 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
 731                         sizeof(struct enc_key));
 732         }
 733
 734         if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 735                 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
 736                         sizeof(struct enc_key));
 737         }
 738
 739         if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 740                 memcpy(&assoc_req->secinfo, &priv->secinfo,
 741                         sizeof(struct lbs_802_11_security));
 742         }
 743
 744         if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 745                 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
 746                         MAX_WPA_IE_LEN);
 747                 assoc_req->wpa_ie_len = priv->wpa_ie_len;
 748         }
 749
 750         lbs_deb_leave(LBS_DEB_ASSOC);
 751         return assoc_req;
 752 }