drivers/staging/wlan-ng/cfg80211.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* cfg80211 Interface for prism2_usb module */
   3 #include "hfa384x.h"
   4 #include "prism2mgmt.h"
   5
   6 /* Prism2 channel/frequency/bitrate declarations */
   7 static const struct ieee80211_channel prism2_channels[] = {
   8         { .center_freq = 2412 },
   9         { .center_freq = 2417 },
  10         { .center_freq = 2422 },
  11         { .center_freq = 2427 },
  12         { .center_freq = 2432 },
  13         { .center_freq = 2437 },
  14         { .center_freq = 2442 },
  15         { .center_freq = 2447 },
  16         { .center_freq = 2452 },
  17         { .center_freq = 2457 },
  18         { .center_freq = 2462 },
  19         { .center_freq = 2467 },
  20         { .center_freq = 2472 },
  21         { .center_freq = 2484 },
  22 };
  23
  24 static const struct ieee80211_rate prism2_rates[] = {
  25         { .bitrate = 10 },
  26         { .bitrate = 20 },
  27         { .bitrate = 55 },
  28         { .bitrate = 110 }
  29 };
  30
  31 #define PRISM2_NUM_CIPHER_SUITES 2
  32 static const u32 prism2_cipher_suites[PRISM2_NUM_CIPHER_SUITES] = {
  33         WLAN_CIPHER_SUITE_WEP40,
  34         WLAN_CIPHER_SUITE_WEP104
  35 };
  36
  37 /* prism2 device private data */
  38 struct prism2_wiphy_private {
  39         struct wlandevice *wlandev;
  40
  41         struct ieee80211_supported_band band;
  42         struct ieee80211_channel channels[ARRAY_SIZE(prism2_channels)];
  43         struct ieee80211_rate rates[ARRAY_SIZE(prism2_rates)];
  44
  45         struct cfg80211_scan_request *scan_request;
  46 };
  47
  48 static const void * const prism2_wiphy_privid = &prism2_wiphy_privid;
  49
  50 /* Helper Functions */
  51 static int prism2_result2err(int prism2_result)
  52 {
  53         int err = 0;
  54
  55         switch (prism2_result) {
  56         case P80211ENUM_resultcode_invalid_parameters:
  57                 err = -EINVAL;
  58                 break;
  59         case P80211ENUM_resultcode_implementation_failure:
  60                 err = -EIO;
  61                 break;
  62         case P80211ENUM_resultcode_not_supported:
  63                 err = -EOPNOTSUPP;
  64                 break;
  65         default:
  66                 err = 0;
  67                 break;
  68         }
  69
  70         return err;
  71 }
  72
  73 static int prism2_domibset_uint32(struct wlandevice *wlandev, u32 did, u32 data)
  74 {
  75         struct p80211msg_dot11req_mibset msg;
  76         struct p80211item_uint32 *mibitem =
  77                         (struct p80211item_uint32 *)&msg.mibattribute.data;
  78
  79         msg.msgcode = DIDmsg_dot11req_mibset;
  80         mibitem->did = did;
  81         mibitem->data = data;
  82
  83         return p80211req_dorequest(wlandev, (u8 *)&msg);
  84 }
  85
  86 static int prism2_domibset_pstr32(struct wlandevice *wlandev,
  87                                   u32 did, u8 len, const u8 *data)
  88 {
  89         struct p80211msg_dot11req_mibset msg;
  90         struct p80211item_pstr32 *mibitem =
  91                         (struct p80211item_pstr32 *)&msg.mibattribute.data;
  92
  93         msg.msgcode = DIDmsg_dot11req_mibset;
  94         mibitem->did = did;
  95         mibitem->data.len = len;
  96         memcpy(mibitem->data.data, data, len);
  97
  98         return p80211req_dorequest(wlandev, (u8 *)&msg);
  99 }
 100
 101 /* The interface functions, called by the cfg80211 layer */
 102 static int prism2_change_virtual_intf(struct wiphy *wiphy,
 103                                       struct net_device *dev,
 104                                       enum nl80211_iftype type,
 105                                       struct vif_params *params)
 106 {
 107         struct wlandevice *wlandev = dev->ml_priv;
 108         u32 data;
 109         int result;
 110         int err = 0;
 111
 112         switch (type) {
 113         case NL80211_IFTYPE_ADHOC:
 114                 if (wlandev->macmode == WLAN_MACMODE_IBSS_STA)
 115                         goto exit;
 116                 wlandev->macmode = WLAN_MACMODE_IBSS_STA;
 117                 data = 0;
 118                 break;
 119         case NL80211_IFTYPE_STATION:
 120                 if (wlandev->macmode == WLAN_MACMODE_ESS_STA)
 121                         goto exit;
 122                 wlandev->macmode = WLAN_MACMODE_ESS_STA;
 123                 data = 1;
 124                 break;
 125         default:
 126                 netdev_warn(dev, "Operation mode: %d not support\n", type);
 127                 return -EOPNOTSUPP;
 128         }
 129
 130         /* Set Operation mode to the PORT TYPE RID */
 131         result = prism2_domibset_uint32(wlandev,
 132                                         DIDmib_p2_p2Static_p2CnfPortType,
 133                                         data);
 134
 135         if (result)
 136                 err = -EFAULT;
 137
 138         dev->ieee80211_ptr->iftype = type;
 139
 140 exit:
 141         return err;
 142 }
 143
 144 static int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
 145                           u8 key_index, bool pairwise, const u8 *mac_addr,
 146                           struct key_params *params)
 147 {
 148         struct wlandevice *wlandev = dev->ml_priv;
 149         u32 did;
 150
 151         int err = 0;
 152         int result = 0;
 153
 154         if (key_index >= NUM_WEPKEYS)
 155                 return -EINVAL;
 156
 157         switch (params->cipher) {
 158         case WLAN_CIPHER_SUITE_WEP40:
 159         case WLAN_CIPHER_SUITE_WEP104:
 160                 result = prism2_domibset_uint32(wlandev,
 161                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 162                                                 key_index);
 163                 if (result)
 164                         goto exit;
 165
 166                 /* send key to driver */
 167                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_key(key_index + 1);
 168
 169                 result = prism2_domibset_pstr32(wlandev, did,
 170                                                 params->key_len, params->key);
 171                 if (result)
 172                         goto exit;
 173                 break;
 174
 175         default:
 176                 pr_debug("Unsupported cipher suite\n");
 177                 result = 1;
 178         }
 179
 180 exit:
 181         if (result)
 182                 err = -EFAULT;
 183
 184         return err;
 185 }
 186
 187 static int prism2_get_key(struct wiphy *wiphy, struct net_device *dev,
 188                           u8 key_index, bool pairwise,
 189                           const u8 *mac_addr, void *cookie,
 190                           void (*callback)(void *cookie, struct key_params*))
 191 {
 192         struct wlandevice *wlandev = dev->ml_priv;
 193         struct key_params params;
 194         int len;
 195
 196         if (key_index >= NUM_WEPKEYS)
 197                 return -EINVAL;
 198
 199         len = wlandev->wep_keylens[key_index];
 200         memset(&params, 0, sizeof(params));
 201
 202         if (len == 13)
 203                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 204         else if (len == 5)
 205                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 206         else
 207                 return -ENOENT;
 208         params.key_len = len;
 209         params.key = wlandev->wep_keys[key_index];
 210         params.seq_len = 0;
 211
 212         callback(cookie, &params);
 213
 214         return 0;
 215 }
 216
 217 static int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
 218                           u8 key_index, bool pairwise, const u8 *mac_addr)
 219 {
 220         struct wlandevice *wlandev = dev->ml_priv;
 221         u32 did;
 222         int err = 0;
 223         int result = 0;
 224
 225         /* There is no direct way in the hardware (AFAIK) of removing
 226          * a key, so we will cheat by setting the key to a bogus value
 227          */
 228
 229         if (key_index >= NUM_WEPKEYS)
 230                 return -EINVAL;
 231
 232         /* send key to driver */
 233         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_key(key_index + 1);
 234         result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");
 235
 236         if (result)
 237                 err = -EFAULT;
 238
 239         return err;
 240 }
 241
 242 static int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
 243                                   u8 key_index, bool unicast, bool multicast)
 244 {
 245         struct wlandevice *wlandev = dev->ml_priv;
 246
 247         int err = 0;
 248         int result = 0;
 249
 250         result = prism2_domibset_uint32(wlandev,
 251                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 252                 key_index);
 253
 254         if (result)
 255                 err = -EFAULT;
 256
 257         return err;
 258 }
 259
 260 static int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
 261                               const u8 *mac, struct station_info *sinfo)
 262 {
 263         struct wlandevice *wlandev = dev->ml_priv;
 264         struct p80211msg_lnxreq_commsquality quality;
 265         int result;
 266
 267         memset(sinfo, 0, sizeof(*sinfo));
 268
 269         if (!wlandev || (wlandev->msdstate != WLAN_MSD_RUNNING))
 270                 return -EOPNOTSUPP;
 271
 272         /* build request message */
 273         quality.msgcode = DIDmsg_lnxreq_commsquality;
 274         quality.dbm.data = P80211ENUM_truth_true;
 275         quality.dbm.status = P80211ENUM_msgitem_status_data_ok;
 276
 277         /* send message to nsd */
 278         if (!wlandev->mlmerequest)
 279                 return -EOPNOTSUPP;
 280
 281         result = wlandev->mlmerequest(wlandev, (struct p80211msg *)&quality);
 282
 283         if (result == 0) {
 284                 sinfo->txrate.legacy = quality.txrate.data;
 285                 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
 286                 sinfo->signal = quality.level.data;
 287                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
 288         }
 289
 290         return result;
 291 }
 292
 293 static int prism2_scan(struct wiphy *wiphy,
 294                        struct cfg80211_scan_request *request)
 295 {
 296         struct net_device *dev;
 297         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 298         struct wlandevice *wlandev;
 299         struct p80211msg_dot11req_scan msg1;
 300         struct p80211msg_dot11req_scan_results msg2;
 301         struct cfg80211_bss *bss;
 302         struct cfg80211_scan_info info = {};
 303
 304         int result;
 305         int err = 0;
 306         int numbss = 0;
 307         int i = 0;
 308         u8 ie_buf[46];
 309         int ie_len;
 310
 311         if (!request)
 312                 return -EINVAL;
 313
 314         dev = request->wdev->netdev;
 315         wlandev = dev->ml_priv;
 316
 317         if (priv->scan_request && priv->scan_request != request)
 318                 return -EBUSY;
 319
 320         if (wlandev->macmode == WLAN_MACMODE_ESS_AP) {
 321                 netdev_err(dev, "Can't scan in AP mode\n");
 322                 return -EOPNOTSUPP;
 323         }
 324
 325         priv->scan_request = request;
 326
 327         memset(&msg1, 0x00, sizeof(msg1));
 328         msg1.msgcode = DIDmsg_dot11req_scan;
 329         msg1.bsstype.data = P80211ENUM_bsstype_any;
 330
 331         memset(&msg1.bssid.data.data, 0xFF, sizeof(msg1.bssid.data.data));
 332         msg1.bssid.data.len = 6;
 333
 334         if (request->n_ssids > 0) {
 335                 msg1.scantype.data = P80211ENUM_scantype_active;
 336                 msg1.ssid.data.len = request->ssids->ssid_len;
 337                 memcpy(msg1.ssid.data.data,
 338                        request->ssids->ssid, request->ssids->ssid_len);
 339         } else {
 340                 msg1.scantype.data = 0;
 341         }
 342         msg1.probedelay.data = 0;
 343
 344         for (i = 0;
 345                 (i < request->n_channels) && i < ARRAY_SIZE(prism2_channels);
 346                 i++)
 347                 msg1.channellist.data.data[i] =
 348                         ieee80211_frequency_to_channel(
 349                                 request->channels[i]->center_freq);
 350         msg1.channellist.data.len = request->n_channels;
 351
 352         msg1.maxchanneltime.data = 250;
 353         msg1.minchanneltime.data = 200;
 354
 355         result = p80211req_dorequest(wlandev, (u8 *)&msg1);
 356         if (result) {
 357                 err = prism2_result2err(msg1.resultcode.data);
 358                 goto exit;
 359         }
 360         /* Now retrieve scan results */
 361         numbss = msg1.numbss.data;
 362
 363         for (i = 0; i < numbss; i++) {
 364                 int freq;
 365
 366                 memset(&msg2, 0, sizeof(msg2));
 367                 msg2.msgcode = DIDmsg_dot11req_scan_results;
 368                 msg2.bssindex.data = i;
 369
 370                 result = p80211req_dorequest(wlandev, (u8 *)&msg2);
 371                 if ((result != 0) ||
 372                     (msg2.resultcode.data != P80211ENUM_resultcode_success)) {
 373                         break;
 374                 }
 375
 376                 ie_buf[0] = WLAN_EID_SSID;
 377                 ie_buf[1] = msg2.ssid.data.len;
 378                 ie_len = ie_buf[1] + 2;
 379                 memcpy(&ie_buf[2], &msg2.ssid.data.data, msg2.ssid.data.len);
 380                 freq = ieee80211_channel_to_frequency(msg2.dschannel.data,
 381                                                       NL80211_BAND_2GHZ);
 382                 bss = cfg80211_inform_bss(wiphy,
 383                         ieee80211_get_channel(wiphy, freq),
 384                         CFG80211_BSS_FTYPE_UNKNOWN,
 385                         (const u8 *)&msg2.bssid.data.data,
 386                         msg2.timestamp.data, msg2.capinfo.data,
 387                         msg2.beaconperiod.data,
 388                         ie_buf,
 389                         ie_len,
 390                         (msg2.signal.data - 65536) * 100, /* Conversion to signed type */
 391                         GFP_KERNEL
 392                 );
 393
 394                 if (!bss) {
 395                         err = -ENOMEM;
 396                         goto exit;
 397                 }
 398
 399                 cfg80211_put_bss(wiphy, bss);
 400         }
 401
 402         if (result)
 403                 err = prism2_result2err(msg2.resultcode.data);
 404
 405 exit:
 406         info.aborted = !!(err);
 407         cfg80211_scan_done(request, &info);
 408         priv->scan_request = NULL;
 409         return err;
 410 }
 411
 412 static int prism2_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 413 {
 414         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 415         struct wlandevice *wlandev = priv->wlandev;
 416         u32 data;
 417         int result;
 418         int err = 0;
 419
 420         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 421                 if (wiphy->rts_threshold == -1)
 422                         data = 2347;
 423                 else
 424                         data = wiphy->rts_threshold;
 425
 426                 result = prism2_domibset_uint32(wlandev,
 427                                                 DIDmib_dot11mac_dot11OperationTable_dot11RTSThreshold,
 428                                                 data);
 429                 if (result) {
 430                         err = -EFAULT;
 431                         goto exit;
 432                 }
 433         }
 434
 435         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 436                 if (wiphy->frag_threshold == -1)
 437                         data = 2346;
 438                 else
 439                         data = wiphy->frag_threshold;
 440
 441                 result = prism2_domibset_uint32(wlandev,
 442                                                 DIDmib_dot11mac_dot11OperationTable_dot11FragmentationThreshold,
 443                                                 data);
 444                 if (result) {
 445                         err = -EFAULT;
 446                         goto exit;
 447                 }
 448         }
 449
 450 exit:
 451         return err;
 452 }
 453
 454 static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
 455                           struct cfg80211_connect_params *sme)
 456 {
 457         struct wlandevice *wlandev = dev->ml_priv;
 458         struct ieee80211_channel *channel = sme->channel;
 459         struct p80211msg_lnxreq_autojoin msg_join;
 460         u32 did;
 461         int length = sme->ssid_len;
 462         int chan = -1;
 463         int is_wep = (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP40) ||
 464             (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP104);
 465         int result;
 466         int err = 0;
 467
 468         /* Set the channel */
 469         if (channel) {
 470                 chan = ieee80211_frequency_to_channel(channel->center_freq);
 471                 result = prism2_domibset_uint32(wlandev,
 472                                                 DIDmib_dot11phy_dot11PhyDSSSTable_dot11CurrentChannel,
 473                                                 chan);
 474                 if (result)
 475                         goto exit;
 476         }
 477
 478         /* Set the authorization */
 479         if ((sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) ||
 480             ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && !is_wep))
 481                 msg_join.authtype.data = P80211ENUM_authalg_opensystem;
 482         else if ((sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY) ||
 483                  ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && is_wep))
 484                 msg_join.authtype.data = P80211ENUM_authalg_sharedkey;
 485         else
 486                 netdev_warn(dev,
 487                             "Unhandled authorisation type for connect (%d)\n",
 488                             sme->auth_type);
 489
 490         /* Set the encryption - we only support wep */
 491         if (is_wep) {
 492                 if (sme->key) {
 493                         if (sme->key_idx >= NUM_WEPKEYS) {
 494                                 err = -EINVAL;
 495                                 goto exit;
 496                         }
 497
 498                         result = prism2_domibset_uint32(wlandev,
 499                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 500                                 sme->key_idx);
 501                         if (result)
 502                                 goto exit;
 503
 504                         /* send key to driver */
 505                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_key(
 506                                         sme->key_idx + 1);
 507                         result = prism2_domibset_pstr32(wlandev,
 508                                                         did, sme->key_len,
 509                                                         (u8 *)sme->key);
 510                         if (result)
 511                                 goto exit;
 512                 }
 513
 514                 /* Assume we should set privacy invoked and exclude unencrypted
 515                  * We could possible use sme->privacy here, but the assumption
 516                  * seems reasonable anyways
 517                  */
 518                 result = prism2_domibset_uint32(wlandev,
 519                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 520                                                 P80211ENUM_truth_true);
 521                 if (result)
 522                         goto exit;
 523
 524                 result = prism2_domibset_uint32(wlandev,
 525                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 526                                                 P80211ENUM_truth_true);
 527                 if (result)
 528                         goto exit;
 529
 530         } else {
 531                 /* Assume we should unset privacy invoked
 532                  * and exclude unencrypted
 533                  */
 534                 result = prism2_domibset_uint32(wlandev,
 535                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 536                                                 P80211ENUM_truth_false);
 537                 if (result)
 538                         goto exit;
 539
 540                 result = prism2_domibset_uint32(wlandev,
 541                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 542                                                 P80211ENUM_truth_false);
 543                 if (result)
 544                         goto exit;
 545         }
 546
 547         /* Now do the actual join. Note there is no way that I can
 548          * see to request a specific bssid
 549          */
 550         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 551
 552         memcpy(msg_join.ssid.data.data, sme->ssid, length);
 553         msg_join.ssid.data.len = length;
 554
 555         result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
 556
 557 exit:
 558         if (result)
 559                 err = -EFAULT;
 560
 561         return err;
 562 }
 563
 564 static int prism2_disconnect(struct wiphy *wiphy, struct net_device *dev,
 565                              u16 reason_code)
 566 {
 567         struct wlandevice *wlandev = dev->ml_priv;
 568         struct p80211msg_lnxreq_autojoin msg_join;
 569         int result;
 570         int err = 0;
 571
 572         /* Do a join, with a bogus ssid. Thats the only way I can think of */
 573         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 574
 575         memcpy(msg_join.ssid.data.data, "---", 3);
 576         msg_join.ssid.data.len = 3;
 577
 578         result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
 579
 580         if (result)
 581                 err = -EFAULT;
 582
 583         return err;
 584 }
 585
 586 static int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 587                             struct cfg80211_ibss_params *params)
 588 {
 589         return -EOPNOTSUPP;
 590 }
 591
 592 static int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 593 {
 594         return -EOPNOTSUPP;
 595 }
 596
 597 static int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 598                                enum nl80211_tx_power_setting type, int mbm)
 599 {
 600         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 601         struct wlandevice *wlandev = priv->wlandev;
 602         u32 data;
 603         int result;
 604         int err = 0;
 605
 606         if (type == NL80211_TX_POWER_AUTOMATIC)
 607                 data = 30;
 608         else
 609                 data = MBM_TO_DBM(mbm);
 610
 611         result = prism2_domibset_uint32(wlandev,
 612                 DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel,
 613                 data);
 614
 615         if (result) {
 616                 err = -EFAULT;
 617                 goto exit;
 618         }
 619
 620 exit:
 621         return err;
 622 }
 623
 624 static int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 625                                int *dbm)
 626 {
 627         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 628         struct wlandevice *wlandev = priv->wlandev;
 629         struct p80211msg_dot11req_mibget msg;
 630         struct p80211item_uint32 *mibitem;
 631         int result;
 632         int err = 0;
 633
 634         mibitem = (struct p80211item_uint32 *)&msg.mibattribute.data;
 635         msg.msgcode = DIDmsg_dot11req_mibget;
 636         mibitem->did =
 637             DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel;
 638
 639         result = p80211req_dorequest(wlandev, (u8 *)&msg);
 640
 641         if (result) {
 642                 err = -EFAULT;
 643                 goto exit;
 644         }
 645
 646         *dbm = mibitem->data;
 647
 648 exit:
 649         return err;
 650 }
 651
 652 /* Interface callback functions, passing data back up to the cfg80211 layer */
 653 void prism2_connect_result(struct wlandevice *wlandev, u8 failed)
 654 {
 655         u16 status = failed ?
 656                      WLAN_STATUS_UNSPECIFIED_FAILURE : WLAN_STATUS_SUCCESS;
 657
 658         cfg80211_connect_result(wlandev->netdev, wlandev->bssid,
 659                                 NULL, 0, NULL, 0, status, GFP_KERNEL);
 660 }
 661
 662 void prism2_disconnected(struct wlandevice *wlandev)
 663 {
 664         cfg80211_disconnected(wlandev->netdev, 0, NULL,
 665                               0, false, GFP_KERNEL);
 666 }
 667
 668 void prism2_roamed(struct wlandevice *wlandev)
 669 {
 670         struct cfg80211_roam_info roam_info = {
 671                 .bssid = wlandev->bssid,
 672         };
 673
 674         cfg80211_roamed(wlandev->netdev, &roam_info, GFP_KERNEL);
 675 }
 676
 677 /* Structures for declaring wiphy interface */
 678 static const struct cfg80211_ops prism2_usb_cfg_ops = {
 679         .change_virtual_intf = prism2_change_virtual_intf,
 680         .add_key = prism2_add_key,
 681         .get_key = prism2_get_key,
 682         .del_key = prism2_del_key,
 683         .set_default_key = prism2_set_default_key,
 684         .get_station = prism2_get_station,
 685         .scan = prism2_scan,
 686         .set_wiphy_params = prism2_set_wiphy_params,
 687         .connect = prism2_connect,
 688         .disconnect = prism2_disconnect,
 689         .join_ibss = prism2_join_ibss,
 690         .leave_ibss = prism2_leave_ibss,
 691         .set_tx_power = prism2_set_tx_power,
 692         .get_tx_power = prism2_get_tx_power,
 693 };
 694
 695 /* Functions to create/free wiphy interface */
 696 static struct wiphy *wlan_create_wiphy(struct device *dev, struct wlandevice *wlandev)
 697 {
 698         struct wiphy *wiphy;
 699         struct prism2_wiphy_private *priv;
 700
 701         wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
 702         if (!wiphy)
 703                 return NULL;
 704
 705         priv = wiphy_priv(wiphy);
 706         priv->wlandev = wlandev;
 707         memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
 708         memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
 709         priv->band.channels = priv->channels;
 710         priv->band.n_channels = ARRAY_SIZE(prism2_channels);
 711         priv->band.bitrates = priv->rates;
 712         priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
 713         priv->band.band = NL80211_BAND_2GHZ;
 714         priv->band.ht_cap.ht_supported = false;
 715         wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
 716
 717         set_wiphy_dev(wiphy, dev);
 718         wiphy->privid = prism2_wiphy_privid;
 719         wiphy->max_scan_ssids = 1;
 720         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
 721                                  | BIT(NL80211_IFTYPE_ADHOC);
 722         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 723         wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
 724         wiphy->cipher_suites = prism2_cipher_suites;
 725
 726         if (wiphy_register(wiphy) < 0) {
 727                 wiphy_free(wiphy);
 728                 return NULL;
 729         }
 730
 731         return wiphy;
 732 }
 733
 734 static void wlan_free_wiphy(struct wiphy *wiphy)
 735 {
 736         wiphy_unregister(wiphy);
 737         wiphy_free(wiphy);
 738 }