release/src-rt-6.x/linux/linux-2.6/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
  13
  14 static const u8 bssid_any[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
  15 static const u8 bssid_off[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
  16
  17 static void print_assoc_req(const char * extra, struct assoc_request * assoc_req)
  18 {
  19         lbs_deb_assoc(
  20                "#### Association Request: %s\n"
  21                "       flags:      0x%08lX\n"
  22                "       SSID:       '%s'\n"
  23                "       channel:    %d\n"
  24                "       band:       %d\n"
  25                "       mode:       %d\n"
  26                "       BSSID:      " MAC_FMT "\n"
  27                "       Encryption:%s%s%s\n"
  28                "       auth:       %d\n",
  29                extra, assoc_req->flags,
  30                escape_essid(assoc_req->ssid, assoc_req->ssid_len),
  31                assoc_req->channel, assoc_req->band, assoc_req->mode,
  32                MAC_ARG(assoc_req->bssid),
  33                assoc_req->secinfo.WPAenabled ? " WPA" : "",
  34                assoc_req->secinfo.WPA2enabled ? " WPA2" : "",
  35                assoc_req->secinfo.wep_enabled ? " WEP" : "",
  36                assoc_req->secinfo.auth_mode);
  37 }
  38
  39
  40 static int assoc_helper_essid(wlan_private *priv,
  41                               struct assoc_request * assoc_req)
  42 {
  43         wlan_adapter *adapter = priv->adapter;
  44         int ret = 0;
  45         struct bss_descriptor * bss;
  46         int channel = -1;
  47
  48         lbs_deb_enter(LBS_DEB_ASSOC);
  49
  50         /* FIXME: take channel into account when picking SSIDs if a channel
  51          * is set.
  52          */
  53
  54         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
  55                 channel = assoc_req->channel;
  56
  57         lbs_deb_assoc("New SSID requested: '%s'\n",
  58                       escape_essid(assoc_req->ssid, assoc_req->ssid_len));
  59         if (assoc_req->mode == IW_MODE_INFRA) {
  60                 if (adapter->prescan) {
  61                         libertas_send_specific_ssid_scan(priv, assoc_req->ssid,
  62                                 assoc_req->ssid_len, 0);
  63                 }
  64
  65                 bss = libertas_find_ssid_in_list(adapter, assoc_req->ssid,
  66                                 assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel);
  67                 if (bss != NULL) {
  68                         lbs_deb_assoc("SSID found in scan list, associating\n");
  69                         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
  70                         ret = wlan_associate(priv, assoc_req);
  71                 } else {
  72                         lbs_deb_assoc("SSID not found; cannot associate\n");
  73                 }
  74         } else if (assoc_req->mode == IW_MODE_ADHOC) {
  75                 /* Scan for the network, do not save previous results.  Stale
  76                  *   scan data will cause us to join a non-existant adhoc network
  77                  */
  78                 libertas_send_specific_ssid_scan(priv, assoc_req->ssid,
  79                         assoc_req->ssid_len, 1);
  80
  81                 /* Search for the requested SSID in the scan table */
  82                 bss = libertas_find_ssid_in_list(adapter, assoc_req->ssid,
  83                                 assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel);
  84                 if (bss != NULL) {
  85                         lbs_deb_assoc("SSID found, will join\n");
  86                         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
  87                         libertas_join_adhoc_network(priv, assoc_req);
  88                 } else {
  89                         /* else send START command */
  90                         lbs_deb_assoc("SSID not found, creating adhoc network\n");
  91                         memcpy(&assoc_req->bss.ssid, &assoc_req->ssid,
  92                                 IW_ESSID_MAX_SIZE);
  93                         assoc_req->bss.ssid_len = assoc_req->ssid_len;
  94                         libertas_start_adhoc_network(priv, assoc_req);
  95                 }
  96         }
  97
  98         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
  99         return ret;
 100 }
 101
 102
 103 static int assoc_helper_bssid(wlan_private *priv,
 104                               struct assoc_request * assoc_req)
 105 {
 106         wlan_adapter *adapter = priv->adapter;
 107         int ret = 0;
 108         struct bss_descriptor * bss;
 109
 110         lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID " MAC_FMT,
 111                 MAC_ARG(assoc_req->bssid));
 112
 113         /* Search for index position in list for requested MAC */
 114         bss = libertas_find_bssid_in_list(adapter, assoc_req->bssid,
 115                             assoc_req->mode);
 116         if (bss == NULL) {
 117                 lbs_deb_assoc("ASSOC: WAP: BSSID " MAC_FMT " not found, "
 118                         "cannot associate.\n", MAC_ARG(assoc_req->bssid));
 119                 goto out;
 120         }
 121
 122         memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor));
 123         if (assoc_req->mode == IW_MODE_INFRA) {
 124                 ret = wlan_associate(priv, assoc_req);
 125                 lbs_deb_assoc("ASSOC: wlan_associate(bssid) returned %d\n", ret);
 126         } else if (assoc_req->mode == IW_MODE_ADHOC) {
 127                 libertas_join_adhoc_network(priv, assoc_req);
 128         }
 129
 130 out:
 131         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 132         return ret;
 133 }
 134
 135
 136 static int assoc_helper_associate(wlan_private *priv,
 137                                   struct assoc_request * assoc_req)
 138 {
 139         int ret = 0, done = 0;
 140
 141         /* If we're given and 'any' BSSID, try associating based on SSID */
 142
 143         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 144                 if (compare_ether_addr(bssid_any, assoc_req->bssid)
 145                     && compare_ether_addr(bssid_off, assoc_req->bssid)) {
 146                         ret = assoc_helper_bssid(priv, assoc_req);
 147                         done = 1;
 148                         if (ret) {
 149                                 lbs_deb_assoc("ASSOC: bssid: ret = %d\n", ret);
 150                         }
 151                 }
 152         }
 153
 154         if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 155                 ret = assoc_helper_essid(priv, assoc_req);
 156                 if (ret) {
 157                         lbs_deb_assoc("ASSOC: bssid: ret = %d\n", ret);
 158                 }
 159         }
 160
 161         return ret;
 162 }
 163
 164
 165 static int assoc_helper_mode(wlan_private *priv,
 166                              struct assoc_request * assoc_req)
 167 {
 168         wlan_adapter *adapter = priv->adapter;
 169         int ret = 0;
 170
 171         lbs_deb_enter(LBS_DEB_ASSOC);
 172
 173         if (assoc_req->mode == adapter->mode)
 174                 goto done;
 175
 176         if (assoc_req->mode == IW_MODE_INFRA) {
 177                 if (adapter->psstate != PS_STATE_FULL_POWER)
 178                         libertas_ps_wakeup(priv, cmd_option_waitforrsp);
 179                 adapter->psmode = wlan802_11powermodecam;
 180         }
 181
 182         adapter->mode = assoc_req->mode;
 183         ret = libertas_prepare_and_send_command(priv,
 184                                     cmd_802_11_snmp_mib,
 185                                     0, cmd_option_waitforrsp,
 186                                     OID_802_11_INFRASTRUCTURE_MODE,
 187                 /* Shoot me now */  (void *) (size_t) assoc_req->mode);
 188
 189 done:
 190         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 191         return ret;
 192 }
 193
 194
 195 static int update_channel(wlan_private * priv)
 196 {
 197         /* the channel in f/w could be out of sync, get the current channel */
 198         return libertas_prepare_and_send_command(priv, cmd_802_11_rf_channel,
 199                                     cmd_opt_802_11_rf_channel_get,
 200                                     cmd_option_waitforrsp, 0, NULL);
 201 }
 202
 203 void libertas_sync_channel(struct work_struct *work)
 204 {
 205         wlan_private *priv = container_of(work, wlan_private, sync_channel);
 206
 207         if (update_channel(priv) != 0)
 208                 lbs_pr_info("Channel synchronization failed.");
 209 }
 210
 211 static int assoc_helper_channel(wlan_private *priv,
 212                                 struct assoc_request * assoc_req)
 213 {
 214         wlan_adapter *adapter = priv->adapter;
 215         int ret = 0;
 216
 217         lbs_deb_enter(LBS_DEB_ASSOC);
 218
 219         ret = update_channel(priv);
 220         if (ret < 0) {
 221                 lbs_deb_assoc("ASSOC: channel: error getting channel.");
 222         }
 223
 224         if (assoc_req->channel == adapter->curbssparams.channel)
 225                 goto done;
 226
 227         lbs_deb_assoc("ASSOC: channel: %d -> %d\n",
 228                adapter->curbssparams.channel, assoc_req->channel);
 229
 230         ret = libertas_prepare_and_send_command(priv, cmd_802_11_rf_channel,
 231                                 cmd_opt_802_11_rf_channel_set,
 232                                 cmd_option_waitforrsp, 0, &assoc_req->channel);
 233         if (ret < 0) {
 234                 lbs_deb_assoc("ASSOC: channel: error setting channel.");
 235         }
 236
 237         ret = update_channel(priv);
 238         if (ret < 0) {
 239                 lbs_deb_assoc("ASSOC: channel: error getting channel.");
 240         }
 241
 242         if (assoc_req->channel != adapter->curbssparams.channel) {
 243                 lbs_deb_assoc("ASSOC: channel: failed to update channel to %d",
 244                               assoc_req->channel);
 245                 goto done;
 246         }
 247
 248         if (   assoc_req->secinfo.wep_enabled
 249             &&   (assoc_req->wep_keys[0].len
 250                || assoc_req->wep_keys[1].len
 251                || assoc_req->wep_keys[2].len
 252                || assoc_req->wep_keys[3].len)) {
 253                 /* Make sure WEP keys are re-sent to firmware */
 254                 set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
 255         }
 256
 257         /* Must restart/rejoin adhoc networks after channel change */
 258         set_bit(ASSOC_FLAG_SSID, &assoc_req->flags);
 259
 260 done:
 261         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 262         return ret;
 263 }
 264
 265
 266 static int assoc_helper_wep_keys(wlan_private *priv,
 267                                  struct assoc_request * assoc_req)
 268 {
 269         wlan_adapter *adapter = priv->adapter;
 270         int i;
 271         int ret = 0;
 272
 273         lbs_deb_enter(LBS_DEB_ASSOC);
 274
 275         /* Set or remove WEP keys */
 276         if (   assoc_req->wep_keys[0].len
 277             || assoc_req->wep_keys[1].len
 278             || assoc_req->wep_keys[2].len
 279             || assoc_req->wep_keys[3].len) {
 280                 ret = libertas_prepare_and_send_command(priv,
 281                                             cmd_802_11_set_wep,
 282                                             cmd_act_add,
 283                                             cmd_option_waitforrsp,
 284                                             0, assoc_req);
 285         } else {
 286                 ret = libertas_prepare_and_send_command(priv,
 287                                             cmd_802_11_set_wep,
 288                                             cmd_act_remove,
 289                                             cmd_option_waitforrsp,
 290                                             0, NULL);
 291         }
 292
 293         if (ret)
 294                 goto out;
 295
 296         /* enable/disable the MAC's WEP packet filter */
 297         if (assoc_req->secinfo.wep_enabled)
 298                 adapter->currentpacketfilter |= cmd_act_mac_wep_enable;
 299         else
 300                 adapter->currentpacketfilter &= ~cmd_act_mac_wep_enable;
 301         ret = libertas_set_mac_packet_filter(priv);
 302         if (ret)
 303                 goto out;
 304
 305         mutex_lock(&adapter->lock);
 306
 307         /* Copy WEP keys into adapter wep key fields */
 308         for (i = 0; i < 4; i++) {
 309                 memcpy(&adapter->wep_keys[i], &assoc_req->wep_keys[i],
 310                         sizeof(struct WLAN_802_11_KEY));
 311         }
 312         adapter->wep_tx_keyidx = assoc_req->wep_tx_keyidx;
 313
 314         mutex_unlock(&adapter->lock);
 315
 316 out:
 317         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 318         return ret;
 319 }
 320
 321 static int assoc_helper_secinfo(wlan_private *priv,
 322                                 struct assoc_request * assoc_req)
 323 {
 324         wlan_adapter *adapter = priv->adapter;
 325         int ret = 0;
 326         u32 do_wpa;
 327         u32 rsn = 0;
 328
 329         lbs_deb_enter(LBS_DEB_ASSOC);
 330
 331         memcpy(&adapter->secinfo, &assoc_req->secinfo,
 332                 sizeof(struct wlan_802_11_security));
 333
 334         ret = libertas_set_mac_packet_filter(priv);
 335         if (ret)
 336                 goto out;
 337
 338         /* If RSN is already enabled, don't try to enable it again, since
 339          * ENABLE_RSN resets internal state machines and will clobber the
 340          * 4-way WPA handshake.
 341          */
 342
 343         /* Get RSN enabled/disabled */
 344         ret = libertas_prepare_and_send_command(priv,
 345                                     cmd_802_11_enable_rsn,
 346                                     cmd_act_set,
 347                                     cmd_option_waitforrsp,
 348                                     0, &rsn);
 349         if (ret) {
 350                 lbs_deb_assoc("Failed to get RSN status: %d", ret);
 351                 goto out;
 352         }
 353
 354         /* Don't re-enable RSN if it's already enabled */
 355         do_wpa = (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled);
 356         if (do_wpa == rsn)
 357                 goto out;
 358
 359         /* Set RSN enabled/disabled */
 360         rsn = do_wpa;
 361         ret = libertas_prepare_and_send_command(priv,
 362                                     cmd_802_11_enable_rsn,
 363                                     cmd_act_set,
 364                                     cmd_option_waitforrsp,
 365                                     0, &rsn);
 366
 367 out:
 368         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 369         return ret;
 370 }
 371
 372
 373 static int assoc_helper_wpa_keys(wlan_private *priv,
 374                                  struct assoc_request * assoc_req)
 375 {
 376         int ret = 0;
 377
 378         lbs_deb_enter(LBS_DEB_ASSOC);
 379
 380         ret = libertas_prepare_and_send_command(priv,
 381                                     cmd_802_11_key_material,
 382                                     cmd_act_set,
 383                                     cmd_option_waitforrsp,
 384                                     0, assoc_req);
 385
 386         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 387         return ret;
 388 }
 389
 390
 391 static int assoc_helper_wpa_ie(wlan_private *priv,
 392                                struct assoc_request * assoc_req)
 393 {
 394         wlan_adapter *adapter = priv->adapter;
 395         int ret = 0;
 396
 397         lbs_deb_enter(LBS_DEB_ASSOC);
 398
 399         if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
 400                 memcpy(&adapter->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len);
 401                 adapter->wpa_ie_len = assoc_req->wpa_ie_len;
 402         } else {
 403                 memset(&adapter->wpa_ie, 0, MAX_WPA_IE_LEN);
 404                 adapter->wpa_ie_len = 0;
 405         }
 406
 407         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 408         return ret;
 409 }
 410
 411
 412 static int should_deauth_infrastructure(wlan_adapter *adapter,
 413                                         struct assoc_request * assoc_req)
 414 {
 415         if (adapter->connect_status != libertas_connected)
 416                 return 0;
 417
 418         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 419                 lbs_deb_assoc("Deauthenticating due to new SSID in "
 420                         " configuration request.\n");
 421                 return 1;
 422         }
 423
 424         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 425                 if (adapter->secinfo.auth_mode != assoc_req->secinfo.auth_mode) {
 426                         lbs_deb_assoc("Deauthenticating due to updated security "
 427                                 "info in configuration request.\n");
 428                         return 1;
 429                 }
 430         }
 431
 432         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 433                 lbs_deb_assoc("Deauthenticating due to new BSSID in "
 434                         " configuration request.\n");
 435                 return 1;
 436         }
 437
 438         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 439                 lbs_deb_assoc("Deauthenticating due to channel switch.\n");
 440                 return 1;
 441         }
 442
 443         /* FIXME: deal with 'auto' mode somehow */
 444         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 445                 if (assoc_req->mode != IW_MODE_INFRA)
 446                         return 1;
 447         }
 448
 449         return 0;
 450 }
 451
 452
 453 static int should_stop_adhoc(wlan_adapter *adapter,
 454                              struct assoc_request * assoc_req)
 455 {
 456         if (adapter->connect_status != libertas_connected)
 457                 return 0;
 458
 459         if (libertas_ssid_cmp(adapter->curbssparams.ssid,
 460                               adapter->curbssparams.ssid_len,
 461                               assoc_req->ssid, assoc_req->ssid_len) != 0)
 462                 return 1;
 463
 464         /* FIXME: deal with 'auto' mode somehow */
 465         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 466                 if (assoc_req->mode != IW_MODE_ADHOC)
 467                         return 1;
 468         }
 469
 470         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 471                 if (assoc_req->channel != adapter->curbssparams.channel)
 472                         return 1;
 473         }
 474
 475         return 0;
 476 }
 477
 478
 479 void libertas_association_worker(struct work_struct *work)
 480 {
 481         wlan_private *priv = container_of(work, wlan_private, assoc_work.work);
 482         wlan_adapter *adapter = priv->adapter;
 483         struct assoc_request * assoc_req = NULL;
 484         int ret = 0;
 485         int find_any_ssid = 0;
 486
 487         lbs_deb_enter(LBS_DEB_ASSOC);
 488
 489         mutex_lock(&adapter->lock);
 490         assoc_req = adapter->pending_assoc_req;
 491         adapter->pending_assoc_req = NULL;
 492         adapter->in_progress_assoc_req = assoc_req;
 493         mutex_unlock(&adapter->lock);
 494
 495         if (!assoc_req)
 496                 goto done;
 497
 498         print_assoc_req(__func__, assoc_req);
 499
 500         /* If 'any' SSID was specified, find an SSID to associate with */
 501         if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)
 502             && !assoc_req->ssid_len)
 503                 find_any_ssid = 1;
 504
 505         /* But don't use 'any' SSID if there's a valid locked BSSID to use */
 506         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 507                 if (compare_ether_addr(assoc_req->bssid, bssid_any)
 508                     && compare_ether_addr(assoc_req->bssid, bssid_off))
 509                         find_any_ssid = 0;
 510         }
 511
 512         if (find_any_ssid) {
 513                 u8 new_mode;
 514
 515                 ret = libertas_find_best_network_ssid(priv, assoc_req->ssid,
 516                                 &assoc_req->ssid_len, assoc_req->mode, &new_mode);
 517                 if (ret) {
 518                         lbs_deb_assoc("Could not find best network\n");
 519                         ret = -ENETUNREACH;
 520                         goto out;
 521                 }
 522
 523                 /* Ensure we switch to the mode of the AP */
 524                 if (assoc_req->mode == IW_MODE_AUTO) {
 525                         set_bit(ASSOC_FLAG_MODE, &assoc_req->flags);
 526                         assoc_req->mode = new_mode;
 527                 }
 528         }
 529
 530         /*
 531          * Check if the attributes being changing require deauthentication
 532          * from the currently associated infrastructure access point.
 533          */
 534         if (adapter->mode == IW_MODE_INFRA) {
 535                 if (should_deauth_infrastructure(adapter, assoc_req)) {
 536                         ret = libertas_send_deauthentication(priv);
 537                         if (ret) {
 538                                 lbs_deb_assoc("Deauthentication due to new "
 539                                         "configuration request failed: %d\n",
 540                                         ret);
 541                         }
 542                 }
 543         } else if (adapter->mode == IW_MODE_ADHOC) {
 544                 if (should_stop_adhoc(adapter, assoc_req)) {
 545                         ret = libertas_stop_adhoc_network(priv);
 546                         if (ret) {
 547                                 lbs_deb_assoc("Teardown of AdHoc network due to "
 548                                         "new configuration request failed: %d\n",
 549                                         ret);
 550                         }
 551
 552                 }
 553         }
 554
 555         /* Send the various configuration bits to the firmware */
 556         if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) {
 557                 ret = assoc_helper_mode(priv, assoc_req);
 558                 if (ret) {
 559 lbs_deb_assoc("ASSOC(:%d) mode: ret = %d\n", __LINE__, ret);
 560                         goto out;
 561                 }
 562         }
 563
 564         if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) {
 565                 ret = assoc_helper_channel(priv, assoc_req);
 566                 if (ret) {
 567                         lbs_deb_assoc("ASSOC(:%d) channel: ret = %d\n",
 568                                       __LINE__, ret);
 569                         goto out;
 570                 }
 571         }
 572
 573         if (   test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)
 574             || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) {
 575                 ret = assoc_helper_wep_keys(priv, assoc_req);
 576                 if (ret) {
 577 lbs_deb_assoc("ASSOC(:%d) wep_keys: ret = %d\n", __LINE__, ret);
 578                         goto out;
 579                 }
 580         }
 581
 582         if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 583                 ret = assoc_helper_secinfo(priv, assoc_req);
 584                 if (ret) {
 585 lbs_deb_assoc("ASSOC(:%d) secinfo: ret = %d\n", __LINE__, ret);
 586                         goto out;
 587                 }
 588         }
 589
 590         if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 591                 ret = assoc_helper_wpa_ie(priv, assoc_req);
 592                 if (ret) {
 593 lbs_deb_assoc("ASSOC(:%d) wpa_ie: ret = %d\n", __LINE__, ret);
 594                         goto out;
 595                 }
 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 lbs_deb_assoc("ASSOC(:%d) wpa_keys: ret = %d\n", __LINE__, ret);
 603                         goto out;
 604                 }
 605         }
 606
 607         /* SSID/BSSID should be the _last_ config option set, because they
 608          * trigger the association attempt.
 609          */
 610         if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)
 611             || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 612                 int success = 1;
 613
 614                 ret = assoc_helper_associate(priv, assoc_req);
 615                 if (ret) {
 616                         lbs_deb_assoc("ASSOC: association attempt unsuccessful: %d\n",
 617                                 ret);
 618                         success = 0;
 619                 }
 620
 621                 if (adapter->connect_status != libertas_connected) {
 622                         lbs_deb_assoc("ASSOC: assoication attempt unsuccessful, "
 623                                 "not connected.\n");
 624                         success = 0;
 625                 }
 626
 627                 if (success) {
 628                         lbs_deb_assoc("ASSOC: association attempt successful. "
 629                                 "Associated to '%s' (" MAC_FMT ")\n",
 630                                 escape_essid(adapter->curbssparams.ssid,
 631                                              adapter->curbssparams.ssid_len),
 632                                 MAC_ARG(adapter->curbssparams.bssid));
 633                         libertas_prepare_and_send_command(priv,
 634                                 cmd_802_11_rssi,
 635                                 0, cmd_option_waitforrsp, 0, NULL);
 636
 637                         libertas_prepare_and_send_command(priv,
 638                                 cmd_802_11_get_log,
 639                                 0, cmd_option_waitforrsp, 0, NULL);
 640                 } else {
 641                         ret = -1;
 642                 }
 643         }
 644
 645 out:
 646         if (ret) {
 647                 lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n",
 648                         ret);
 649         }
 650
 651         mutex_lock(&adapter->lock);
 652         adapter->in_progress_assoc_req = NULL;
 653         mutex_unlock(&adapter->lock);
 654         kfree(assoc_req);
 655
 656 done:
 657         lbs_deb_leave(LBS_DEB_ASSOC);
 658 }
 659
 660
 661 /*
 662  * Caller MUST hold any necessary locks
 663  */
 664 struct assoc_request * wlan_get_association_request(wlan_adapter *adapter)
 665 {
 666         struct assoc_request * assoc_req;
 667
 668         if (!adapter->pending_assoc_req) {
 669                 adapter->pending_assoc_req = kzalloc(sizeof(struct assoc_request),
 670                                                      GFP_KERNEL);
 671                 if (!adapter->pending_assoc_req) {
 672                         lbs_pr_info("Not enough memory to allocate association"
 673                                 " request!\n");
 674                         return NULL;
 675                 }
 676         }
 677
 678         /* Copy current configuration attributes to the association request,
 679          * but don't overwrite any that are already set.
 680          */
 681         assoc_req = adapter->pending_assoc_req;
 682         if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) {
 683                 memcpy(&assoc_req->ssid, &adapter->curbssparams.ssid,
 684                        IW_ESSID_MAX_SIZE);
 685                 assoc_req->ssid_len = adapter->curbssparams.ssid_len;
 686         }
 687
 688         if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags))
 689                 assoc_req->channel = adapter->curbssparams.channel;
 690
 691         if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags))
 692                 assoc_req->band = adapter->curbssparams.band;
 693
 694         if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags))
 695                 assoc_req->mode = adapter->mode;
 696
 697         if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) {
 698                 memcpy(&assoc_req->bssid, adapter->curbssparams.bssid,
 699                         ETH_ALEN);
 700         }
 701
 702         if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) {
 703                 int i;
 704                 for (i = 0; i < 4; i++) {
 705                         memcpy(&assoc_req->wep_keys[i], &adapter->wep_keys[i],
 706                                 sizeof(struct WLAN_802_11_KEY));
 707                 }
 708         }
 709
 710         if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags))
 711                 assoc_req->wep_tx_keyidx = adapter->wep_tx_keyidx;
 712
 713         if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 714                 memcpy(&assoc_req->wpa_mcast_key, &adapter->wpa_mcast_key,
 715                         sizeof(struct WLAN_802_11_KEY));
 716         }
 717
 718         if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 719                 memcpy(&assoc_req->wpa_unicast_key, &adapter->wpa_unicast_key,
 720                         sizeof(struct WLAN_802_11_KEY));
 721         }
 722
 723         if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) {
 724                 memcpy(&assoc_req->secinfo, &adapter->secinfo,
 725                         sizeof(struct wlan_802_11_security));
 726         }
 727
 728         if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) {
 729                 memcpy(&assoc_req->wpa_ie, &adapter->wpa_ie,
 730                         MAX_WPA_IE_LEN);
 731                 assoc_req->wpa_ie_len = adapter->wpa_ie_len;
 732         }
 733
 734         print_assoc_req(__func__, assoc_req);
 735
 736         return assoc_req;
 737 }