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]  __attribute__ ((aligned (2))) =
  16         { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
  17 static const u8 bssid_off[ETH_ALEN]  __attribute__ ((aligned (2))) =
  18         { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  19
  20
  21 static int assoc_helper_essid(struct lbs_private *priv,
  22                               struct assoc_request * assoc_req)
  23 {
  24         int ret = 0;
  25         struct bss_descriptor * bss;
  26         int channel = -1;
  27
  28         lbs_deb_enter(LBS_DEB_ASSOC);
  29
  30         /* FIXME: take channel into account when picking SSIDs if a channel
  31          * is set.
  32          */
  33
  34         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
  35                 channel = assoc_req->channel;
  36
  37         lbs_deb_assoc("SSID '%s' requested\n",
  38                       escape_essid(assoc_req->ssid, assoc_req->ssid_len));
  39         if (assoc_req->mode == IW_MODE_INFRA) {
  40                 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
  41                         assoc_req->ssid_len);
  42
  43                 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
  44                                 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
  45                 if (bss != NULL) {
  46                         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
  47                         ret = lbs_associate(priv, assoc_req);
  48                 } else {
  49                         lbs_deb_assoc("SSID not found; cannot associate\n");
  50                 }
  51         } else if (assoc_req->mode == IW_MODE_ADHOC) {
  52                 /* Scan for the network, do not save previous results.  Stale
  53                  *   scan data will cause us to join a non-existant adhoc network
  54                  */
  55                 lbs_send_specific_ssid_scan(priv, assoc_req->ssid,
  56                         assoc_req->ssid_len);
  57
  58                 /* Search for the requested SSID in the scan table */
  59                 bss = lbs_find_ssid_in_list(priv, assoc_req->ssid,
  60                                 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
  61                 if (bss != NULL) {
  62                         lbs_deb_assoc("SSID found, will join\n");
  63                         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
  64                         lbs_join_adhoc_network(priv, assoc_req);
  65                 } else {
  66                         /* else send START command */
  67                         lbs_deb_assoc("SSID not found, creating adhoc network\n");
  68                         memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
  69                                 IW_ESSID_MAX_SIZE);
  70                         assoc_req->bss.ssid_len = assoc_req->ssid_len;
  71                         lbs_start_adhoc_network(priv, assoc_req);
  72                 }
  73         }
  74
  75         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
  76         return ret;
  77 }
  78
  79
  80 static int assoc_helper_bssid(struct lbs_private *priv,
  81                               struct assoc_request * assoc_req)
  82 {
  83         int ret = 0;
  84         struct bss_descriptor * bss;
  85         DECLARE_MAC_BUF(mac);
  86
  87         lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %s",
  88                 print_mac(mac, assoc_req->bssid));
  89
  90         /* Search for index position in list for requested MAC */
  91         bss = lbs_find_bssid_in_list(priv, assoc_req->bssid,
  92                             assoc_req->mode);
  93         if (bss == NULL) {
  94                 lbs_deb_assoc("ASSOC: WAP: BSSID %s not found, "
  95                         "cannot associate.\n", print_mac(mac, assoc_req->bssid));
  96                 goto out;
  97         }
  98
  99         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
 100         if (assoc_req->mode == IW_MODE_INFRA) {
 101                 ret = lbs_associate(priv, assoc_req);
 102                 lbs_deb_assoc("ASSOC: lbs_associate(bssid) returned %d\n", ret);
 103         } else if (assoc_req->mode == IW_MODE_ADHOC) {
 104                 lbs_join_adhoc_network(priv, assoc_req);
 105         }
 106
 107 out:
 108         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 109         return ret;
 110 }
 111
 112
 113 static int assoc_helper_associate(struct lbs_private *priv,
 114                                   struct assoc_request * assoc_req)
 115 {
 116         int ret = 0, done = 0;
 117
 118         lbs_deb_enter(LBS_DEB_ASSOC);
 119
 120         /* If we're given and 'any' BSSID, try associating based on SSID */
 121
 122         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 123                 if (compare_ether_addr(bssid_any, assoc_req->bssid)
 124                     && compare_ether_addr(bssid_off, assoc_req->bssid)) {
 125                         ret = assoc_helper_bssid(priv, assoc_req);
 126                         done = 1;
 127                 }
 128         }
 129
 130         if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 131                 ret = assoc_helper_essid(priv, assoc_req);
 132         }
 133
 134         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 135         return ret;
 136 }
 137
 138
 139 static int assoc_helper_mode(struct lbs_private *priv,
 140                              struct assoc_request * assoc_req)
 141 {
 142         int ret = 0;
 143
 144         lbs_deb_enter(LBS_DEB_ASSOC);
 145
 146         if (assoc_req->mode == priv->mode)
 147                 goto done;
 148
 149         if (assoc_req->mode == IW_MODE_INFRA) {
 150                 if (priv->psstate != PS_STATE_FULL_POWER)
 151                         lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
 152                 priv->psmode = LBS802_11POWERMODECAM;
 153         }
 154
 155         priv->mode = assoc_req->mode;
 156         ret = lbs_prepare_and_send_command(priv,
 157                                     CMD_802_11_SNMP_MIB,
 158                                     0, CMD_OPTION_WAITFORRSP,
 159                                     OID_802_11_INFRASTRUCTURE_MODE,
 160                 /* Shoot me now */  (void *) (size_t) assoc_req->mode);
 161
 162 done:
 163         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 164         return ret;
 165 }
 166
 167
 168 int lbs_update_channel(struct lbs_private *priv)
 169 {
 170         int ret;
 171
 172         /* the channel in f/w could be out of sync; get the current channel */
 173         lbs_deb_enter(LBS_DEB_ASSOC);
 174
 175         ret = lbs_get_channel(priv);
 176         if (ret > 0) {
 177                 priv->curbssparams.channel = ret;
 178                 ret = 0;
 179         }
 180         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 181         return ret;
 182 }
 183
 184 static int assoc_helper_channel(struct lbs_private *priv,
 185                                 struct assoc_request * assoc_req)
 186 {
 187         int ret = 0;
 188
 189         lbs_deb_enter(LBS_DEB_ASSOC);
 190
 191         ret = lbs_update_channel(priv);
 192         if (ret) {
 193                 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
 194                 goto done;
 195         }
 196
 197         if (assoc_req->channel == priv->curbssparams.channel)
 198                 goto done;
 199
 200         if (priv->mesh_dev) {
 201                 /* Change mesh channel first; 21.p21 firmware won't let
 202                    you change channel otherwise (even though it'll return
 203                    an error to this */
 204                 lbs_mesh_config(priv, 0, assoc_req->channel);
 205         }
 206
 207         lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
 208                       priv->curbssparams.channel, assoc_req->channel);
 209
 210         ret = lbs_set_channel(priv, assoc_req->channel);
 211         if (ret < 0)
 212                 lbs_deb_assoc("ASSOC: channel: error setting channel.\n");
 213
 214         /* FIXME: shouldn't need to grab the channel _again_ after setting
 215          * it since the firmware is supposed to return the new channel, but
 216          * whatever... */
 217         ret = lbs_update_channel(priv);
 218         if (ret) {
 219                 lbs_deb_assoc("ASSOC: channel: error getting channel.\n");
 220                 goto done;
 221         }
 222
 223         if (assoc_req->channel != priv->curbssparams.channel) {
 224                 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n",
 225                               assoc_req->channel);
 226                 goto restore_mesh;
 227         }
 228
 229         if (   assoc_req->secinfo.wep_enabled
 230             &&   (assoc_req->wep_keys[0].len
 231                || assoc_req->wep_keys[1].len
 232                || assoc_req->wep_keys[2].len
 233                || assoc_req->wep_keys[3].len)) {
 234                 /* Make sure WEP keys are re-sent to firmware */
 235                 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
 236         }
 237
 238         /* Must restart/rejoin adhoc networks after channel change */
 239         set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
 240
 241  restore_mesh:
 242         if (priv->mesh_dev)
 243                 lbs_mesh_config(priv, 1, priv->curbssparams.channel);
 244
 245  done:
 246         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 247         return ret;
 248 }
 249
 250
 251 static int assoc_helper_wep_keys(struct lbs_private *priv,
 252                                  struct assoc_request *assoc_req)
 253 {
 254         int i;
 255         int ret = 0;
 256
 257         lbs_deb_enter(LBS_DEB_ASSOC);
 258
 259         /* Set or remove WEP keys */
 260         if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len ||
 261             assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len)
 262                 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req);
 263         else
 264                 ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req);
 265
 266         if (ret)
 267                 goto out;
 268
 269         /* enable/disable the MAC's WEP packet filter */
 270         if (assoc_req->secinfo.wep_enabled)
 271                 priv->currentpacketfilter |= CMD_ACT_MAC_WEP_ENABLE;
 272         else
 273                 priv->currentpacketfilter &= ~CMD_ACT_MAC_WEP_ENABLE;
 274
 275         ret = lbs_set_mac_packet_filter(priv);
 276         if (ret)
 277                 goto out;
 278
 279         mutex_lock(&priv->lock);
 280
 281         /* Copy WEP keys into priv wep key fields */
 282         for (i = 0; i < 4; i++) {
 283                 memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i],
 284                        sizeof(struct enc_key));
 285         }
 286         priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
 287
 288         mutex_unlock(&priv->lock);
 289
 290 out:
 291         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 292         return ret;
 293 }
 294
 295 static int assoc_helper_secinfo(struct lbs_private *priv,
 296                                 struct assoc_request * assoc_req)
 297 {
 298         int ret = 0;
 299         uint16_t do_wpa;
 300         uint16_t rsn = 0;
 301
 302         lbs_deb_enter(LBS_DEB_ASSOC);
 303
 304         memcpy(&priv->secinfo, &assoc_req->secinfo,
 305                 sizeof(struct lbs_802_11_security));
 306
 307         ret = lbs_set_mac_packet_filter(priv);
 308         if (ret)
 309                 goto out;
 310
 311         /* If RSN is already enabled, don't try to enable it again, since
 312          * ENABLE_RSN resets internal state machines and will clobber the
 313          * 4-way WPA handshake.
 314          */
 315
 316         /* Get RSN enabled/disabled */
 317         ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn);
 318         if (ret) {
 319                 lbs_deb_assoc("Failed to get RSN status: %d\n", ret);
 320                 goto out;
 321         }
 322
 323         /* Don't re-enable RSN if it's already enabled */
 324         do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled;
 325         if (do_wpa == rsn)
 326                 goto out;
 327
 328         /* Set RSN enabled/disabled */
 329         ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa);
 330
 331 out:
 332         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 333         return ret;
 334 }
 335
 336
 337 static int assoc_helper_wpa_keys(struct lbs_private *priv,
 338                                  struct assoc_request * assoc_req)
 339 {
 340         int ret = 0;
 341         unsigned int flags = assoc_req->flags;
 342
 343         lbs_deb_enter(LBS_DEB_ASSOC);
 344
 345         /* Work around older firmware bug where WPA unicast and multicast
 346          * keys must be set independently.  Seen in SDIO parts with firmware
 347          * version 5.0.11p0.
 348          */
 349
 350         if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 351                 clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
 352                 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
 353                 assoc_req->flags = flags;
 354         }
 355
 356         if (ret)
 357                 goto out;
 358
 359         if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 360                 clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
 361
 362                 ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req);
 363                 assoc_req->flags = flags;
 364         }
 365
 366 out:
 367         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 368         return ret;
 369 }
 370
 371
 372 static int assoc_helper_wpa_ie(struct lbs_private *priv,
 373                                struct assoc_request * assoc_req)
 374 {
 375         int ret = 0;
 376
 377         lbs_deb_enter(LBS_DEB_ASSOC);
 378
 379         if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
 380                 memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
 381                 priv->wpa_ie_len = assoc_req->wpa_ie_len;
 382         } else {
 383                 memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN);
 384                 priv->wpa_ie_len = 0;
 385         }
 386
 387         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 388         return ret;
 389 }
 390
 391
 392 static int should_deauth_infrastructure(struct lbs_private *priv,
 393                                         struct assoc_request * assoc_req)
 394 {
 395         int ret = 0;
 396
 397         if (priv->connect_status != LBS_CONNECTED)
 398                 return 0;
 399
 400         lbs_deb_enter(LBS_DEB_ASSOC);
 401         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 402                 lbs_deb_assoc("Deauthenticating due to new SSID\n");
 403                 ret = 1;
 404                 goto out;
 405         }
 406
 407         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 408                 if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
 409                         lbs_deb_assoc("Deauthenticating due to new security\n");
 410                         ret = 1;
 411                         goto out;
 412                 }
 413         }
 414
 415         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 416                 lbs_deb_assoc("Deauthenticating due to new BSSID\n");
 417                 ret = 1;
 418                 goto out;
 419         }
 420
 421         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 422                 lbs_deb_assoc("Deauthenticating due to channel switch\n");
 423                 ret = 1;
 424                 goto out;
 425         }
 426
 427         /* FIXME: deal with 'auto' mode somehow */
 428         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 429                 if (assoc_req->mode != IW_MODE_INFRA) {
 430                         lbs_deb_assoc("Deauthenticating due to leaving "
 431                                 "infra mode\n");
 432                         ret = 1;
 433                         goto out;
 434                 }
 435         }
 436
 437 out:
 438         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 439         return ret;
 440 }
 441
 442
 443 static int should_stop_adhoc(struct lbs_private *priv,
 444                              struct assoc_request * assoc_req)
 445 {
 446         lbs_deb_enter(LBS_DEB_ASSOC);
 447
 448         if (priv->connect_status != LBS_CONNECTED)
 449                 return 0;
 450
 451         if (lbs_ssid_cmp(priv->curbssparams.ssid,
 452                               priv->curbssparams.ssid_len,
 453                               assoc_req->ssid, assoc_req->ssid_len) != 0)
 454                 return 1;
 455
 456         /* FIXME: deal with 'auto' mode somehow */
 457         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 458                 if (assoc_req->mode != IW_MODE_ADHOC)
 459                         return 1;
 460         }
 461
 462         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 463                 if (assoc_req->channel != priv->curbssparams.channel)
 464                         return 1;
 465         }
 466
 467         lbs_deb_leave(LBS_DEB_ASSOC);
 468         return 0;
 469 }
 470
 471
 472 void lbs_association_worker(struct work_struct *work)
 473 {
 474         struct lbs_private *priv = container_of(work, struct lbs_private,
 475                 assoc_work.work);
 476         struct assoc_request * assoc_req = NULL;
 477         int ret = 0;
 478         int find_any_ssid = 0;
 479         DECLARE_MAC_BUF(mac);
 480
 481         lbs_deb_enter(LBS_DEB_ASSOC);
 482
 483         mutex_lock(&priv->lock);
 484         assoc_req = priv->pending_assoc_req;
 485         priv->pending_assoc_req = NULL;
 486         priv->in_progress_assoc_req = assoc_req;
 487         mutex_unlock(&priv->lock);
 488
 489         if (!assoc_req)
 490                 goto done;
 491
 492         lbs_deb_assoc(
 493                 "Association Request:\n"
 494                 "    flags:     0x%08lx\n"
 495                 "    SSID:      '%s'\n"
 496                 "    chann:     %d\n"
 497                 "    band:      %d\n"
 498                 "    mode:      %d\n"
 499                 "    BSSID:     %s\n"
 500                 "    secinfo:  %s%s%s\n"
 501                 "    auth_mode: %d\n",
 502                 assoc_req->flags,
 503                 escape_essid(assoc_req->ssid, assoc_req->ssid_len),
 504                 assoc_req->channel, assoc_req->band, assoc_req->mode,
 505                 print_mac(mac, assoc_req->bssid),
 506                 assoc_req->secinfo.WPAenabled ? " WPA" : "",
 507                 assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
 508                 assoc_req->secinfo.wep_enabled ? " WEP" : "",
 509                 assoc_req->secinfo.auth_mode);
 510
 511         /* If 'any' SSID was specified, find an SSID to associate with */
 512         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
 513             && !assoc_req->ssid_len)
 514                 find_any_ssid = 1;
 515
 516         /* But don't use 'any' SSID if there's a valid locked BSSID to use */
 517         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 518                 if (compare_ether_addr(assoc_req->bssid, bssid_any)
 519                     && compare_ether_addr(assoc_req->bssid, bssid_off))
 520                         find_any_ssid = 0;
 521         }
 522
 523         if (find_any_ssid) {
 524                 u8 new_mode;
 525
 526                 ret = lbs_find_best_network_ssid(priv, assoc_req->ssid,
 527                                 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
 528                 if (ret) {
 529                         lbs_deb_assoc("Could not find best network\n");
 530                         ret = -ENETUNREACH;
 531                         goto out;
 532                 }
 533
 534                 /* Ensure we switch to the mode of the AP */
 535                 if (assoc_req->mode == IW_MODE_AUTO) {
 536                         set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
 537                         assoc_req->mode = new_mode;
 538                 }
 539         }
 540
 541         /*
 542          * Check if the attributes being changing require deauthentication
 543          * from the currently associated infrastructure access point.
 544          */
 545         if (priv->mode == IW_MODE_INFRA) {
 546                 if (should_deauth_infrastructure(priv, assoc_req)) {
 547                         ret = lbs_send_deauthentication(priv);
 548                         if (ret) {
 549                                 lbs_deb_assoc("Deauthentication due to new "
 550                                         "configuration request failed: %d\n",
 551                                         ret);
 552                         }
 553                 }
 554         } else if (priv->mode == IW_MODE_ADHOC) {
 555                 if (should_stop_adhoc(priv, assoc_req)) {
 556                         ret = lbs_stop_adhoc_network(priv);
 557                         if (ret) {
 558                                 lbs_deb_assoc("Teardown of AdHoc network due to "
 559                                         "new configuration request failed: %d\n",
 560                                         ret);
 561                         }
 562
 563                 }
 564         }
 565
 566         /* Send the various configuration bits to the firmware */
 567         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 568                 ret = assoc_helper_mode(priv, assoc_req);
 569                 if (ret)
 570                         goto out;
 571         }
 572
 573         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 574                 ret = assoc_helper_channel(priv, assoc_req);
 575                 if (ret)
 576                         goto out;
 577         }
 578
 579         if (   test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
 580             || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
 581                 ret = assoc_helper_wep_keys(priv, assoc_req);
 582                 if (ret)
 583                         goto out;
 584         }
 585
 586         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 587                 ret = assoc_helper_secinfo(priv, assoc_req);
 588                 if (ret)
 589                         goto out;
 590         }
 591
 592         if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 593                 ret = assoc_helper_wpa_ie(priv, assoc_req);
 594                 if (ret)
 595                         goto out;
 596         }
 597
 598         if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)
 599             || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 600                 ret = assoc_helper_wpa_keys(priv, assoc_req);
 601                 if (ret)
 602                         goto out;
 603         }
 604
 605         /* SSID/BSSID should be the _last_ config option set, because they
 606          * trigger the association attempt.
 607          */
 608         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
 609             || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 610                 int success = 1;
 611
 612                 ret = assoc_helper_associate(priv, assoc_req);
 613                 if (ret) {
 614                         lbs_deb_assoc("ASSOC: association unsuccessful: %d\n",
 615                                 ret);
 616                         success = 0;
 617                 }
 618
 619                 if (priv->connect_status != LBS_CONNECTED) {
 620                         lbs_deb_assoc("ASSOC: association unsuccessful, "
 621                                 "not connected\n");
 622                         success = 0;
 623                 }
 624
 625                 if (success) {
 626                         lbs_deb_assoc("associated to %s\n",
 627                                 print_mac(mac, priv->curbssparams.bssid));
 628                         lbs_prepare_and_send_command(priv,
 629                                 CMD_802_11_RSSI,
 630                                 0, CMD_OPTION_WAITFORRSP, 0, NULL);
 631
 632                         lbs_prepare_and_send_command(priv,
 633                                 CMD_802_11_GET_LOG,
 634                                 0, CMD_OPTION_WAITFORRSP, 0, NULL);
 635                 } else {
 636                         ret = -1;
 637                 }
 638         }
 639
 640 out:
 641         if (ret) {
 642                 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
 643                         ret);
 644         }
 645
 646         mutex_lock(&priv->lock);
 647         priv->in_progress_assoc_req = NULL;
 648         mutex_unlock(&priv->lock);
 649         kfree(assoc_req);
 650
 651 done:
 652         lbs_deb_leave(LBS_DEB_ASSOC);
 653 }
 654
 655
 656 /*
 657  * Caller MUST hold any necessary locks
 658  */
 659 struct assoc_request *lbs_get_association_request(struct lbs_private *priv)
 660 {
 661         struct assoc_request * assoc_req;
 662
 663         lbs_deb_enter(LBS_DEB_ASSOC);
 664         if (!priv->pending_assoc_req) {
 665                 priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
 666                                                      GFP_KERNEL);
 667                 if (!priv->pending_assoc_req) {
 668                         lbs_pr_info("Not enough memory to allocate association"
 669                                 " request!\n");
 670                         return NULL;
 671                 }
 672         }
 673
 674         /* Copy current configuration attributes to the association request,
 675          * but don't overwrite any that are already set.
 676          */
 677         assoc_req = priv->pending_assoc_req;
 678         if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 679                 memcpy(&assoc_req->ssid, &priv->curbssparams.ssid,
 680                        IW_ESSID_MAX_SIZE);
 681                 assoc_req->ssid_len = priv->curbssparams.ssid_len;
 682         }
 683
 684         if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
 685                 assoc_req->channel = priv->curbssparams.channel;
 686
 687         if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
 688                 assoc_req->band = priv->curbssparams.band;
 689
 690         if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
 691                 assoc_req->mode = priv->mode;
 692
 693         if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 694                 memcpy(&assoc_req->bssid, priv->curbssparams.bssid,
 695                         ETH_ALEN);
 696         }
 697
 698         if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
 699                 int i;
 700                 for (i = 0; i < 4; i++) {
 701                         memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i],
 702                                 sizeof(struct enc_key));
 703                 }
 704         }
 705
 706         if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
 707                 assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx;
 708
 709         if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 710                 memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key,
 711                         sizeof(struct enc_key));
 712         }
 713
 714         if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 715                 memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key,
 716                         sizeof(struct enc_key));
 717         }
 718
 719         if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 720                 memcpy(&assoc_req->secinfo, &priv->secinfo,
 721                         sizeof(struct lbs_802_11_security));
 722         }
 723
 724         if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 725                 memcpy(&assoc_req->wpa_ie, &priv->wpa_ie,
 726                         MAX_WPA_IE_LEN);
 727                 assoc_req->wpa_ie_len = priv->wpa_ie_len;
 728         }
 729
 730         lbs_deb_leave(LBS_DEB_ASSOC);
 731         return assoc_req;
 732 }