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,
  74                                   u32 did, u32 data)
  75 {
  76         struct p80211msg_dot11req_mibset msg;
  77         struct p80211item_uint32 *mibitem =
  78                         (struct p80211item_uint32 *)&msg.mibattribute.data;
  79
  80         msg.msgcode = DIDMSG_DOT11REQ_MIBSET;
  81         mibitem->did = did;
  82         mibitem->data = data;
  83
  84         return p80211req_dorequest(wlandev, (u8 *)&msg);
  85 }
  86
  87 static int prism2_domibset_pstr32(struct wlandevice *wlandev,
  88                                   u32 did, u8 len, const u8 *data)
  89 {
  90         struct p80211msg_dot11req_mibset msg;
  91         struct p80211item_pstr32 *mibitem =
  92                         (struct p80211item_pstr32 *)&msg.mibattribute.data;
  93
  94         msg.msgcode = DIDMSG_DOT11REQ_MIBSET;
  95         mibitem->did = did;
  96         mibitem->data.len = len;
  97         memcpy(mibitem->data.data, data, len);
  98
  99         return p80211req_dorequest(wlandev, (u8 *)&msg);
 100 }
 101
 102 /* The interface functions, called by the cfg80211 layer */
 103 static int prism2_change_virtual_intf(struct wiphy *wiphy,
 104                                       struct net_device *dev,
 105                                       enum nl80211_iftype type,
 106                                       struct vif_params *params)
 107 {
 108         struct wlandevice *wlandev = dev->ml_priv;
 109         u32 data;
 110         int result;
 111         int err = 0;
 112
 113         switch (type) {
 114         case NL80211_IFTYPE_ADHOC:
 115                 if (wlandev->macmode == WLAN_MACMODE_IBSS_STA)
 116                         goto exit;
 117                 wlandev->macmode = WLAN_MACMODE_IBSS_STA;
 118                 data = 0;
 119                 break;
 120         case NL80211_IFTYPE_STATION:
 121                 if (wlandev->macmode == WLAN_MACMODE_ESS_STA)
 122                         goto exit;
 123                 wlandev->macmode = WLAN_MACMODE_ESS_STA;
 124                 data = 1;
 125                 break;
 126         default:
 127                 netdev_warn(dev, "Operation mode: %d not support\n", type);
 128                 return -EOPNOTSUPP;
 129         }
 130
 131         /* Set Operation mode to the PORT TYPE RID */
 132         result = prism2_domibset_uint32(wlandev,
 133                                         DIDMIB_P2_STATIC_CNFPORTTYPE,
 134                                         data);
 135
 136         if (result)
 137                 err = -EFAULT;
 138
 139         dev->ieee80211_ptr->iftype = type;
 140
 141 exit:
 142         return err;
 143 }
 144
 145 static int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
 146                           u8 key_index, bool pairwise, const u8 *mac_addr,
 147                           struct key_params *params)
 148 {
 149         struct wlandevice *wlandev = dev->ml_priv;
 150         u32 did;
 151
 152         if (key_index >= NUM_WEPKEYS)
 153                 return -EINVAL;
 154
 155         if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
 156             params->cipher != WLAN_CIPHER_SUITE_WEP104) {
 157                 pr_debug("Unsupported cipher suite\n");
 158                 return -EFAULT;
 159         }
 160
 161         if (prism2_domibset_uint32(wlandev,
 162                                    DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
 163                                    key_index))
 164                 return -EFAULT;
 165
 166         /* send key to driver */
 167         did = didmib_dot11smt_wepdefaultkeystable_key(key_index + 1);
 168
 169         if (prism2_domibset_pstr32(wlandev, did, params->key_len, params->key))
 170                 return -EFAULT;
 171         return 0;
 172 }
 173
 174 static int prism2_get_key(struct wiphy *wiphy, struct net_device *dev,
 175                           u8 key_index, bool pairwise,
 176                           const u8 *mac_addr, void *cookie,
 177                           void (*callback)(void *cookie, struct key_params*))
 178 {
 179         struct wlandevice *wlandev = dev->ml_priv;
 180         struct key_params params;
 181         int len;
 182
 183         if (key_index >= NUM_WEPKEYS)
 184                 return -EINVAL;
 185
 186         len = wlandev->wep_keylens[key_index];
 187         memset(&params, 0, sizeof(params));
 188
 189         if (len == 13)
 190                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 191         else if (len == 5)
 192                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 193         else
 194                 return -ENOENT;
 195         params.key_len = len;
 196         params.key = wlandev->wep_keys[key_index];
 197         params.seq_len = 0;
 198
 199         callback(cookie, &params);
 200
 201         return 0;
 202 }
 203
 204 static int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
 205                           u8 key_index, bool pairwise, const u8 *mac_addr)
 206 {
 207         struct wlandevice *wlandev = dev->ml_priv;
 208         u32 did;
 209         int err = 0;
 210         int result = 0;
 211
 212         /* There is no direct way in the hardware (AFAIK) of removing
 213          * a key, so we will cheat by setting the key to a bogus value
 214          */
 215
 216         if (key_index >= NUM_WEPKEYS)
 217                 return -EINVAL;
 218
 219         /* send key to driver */
 220         did = didmib_dot11smt_wepdefaultkeystable_key(key_index + 1);
 221         result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");
 222
 223         if (result)
 224                 err = -EFAULT;
 225
 226         return err;
 227 }
 228
 229 static int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
 230                                   u8 key_index, bool unicast, bool multicast)
 231 {
 232         struct wlandevice *wlandev = dev->ml_priv;
 233
 234         int err = 0;
 235         int result = 0;
 236
 237         result = prism2_domibset_uint32(wlandev,
 238                 DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
 239                 key_index);
 240
 241         if (result)
 242                 err = -EFAULT;
 243
 244         return err;
 245 }
 246
 247 static int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
 248                               const u8 *mac, struct station_info *sinfo)
 249 {
 250         struct wlandevice *wlandev = dev->ml_priv;
 251         struct p80211msg_lnxreq_commsquality quality;
 252         int result;
 253
 254         memset(sinfo, 0, sizeof(*sinfo));
 255
 256         if (!wlandev || (wlandev->msdstate != WLAN_MSD_RUNNING))
 257                 return -EOPNOTSUPP;
 258
 259         /* build request message */
 260         quality.msgcode = DIDMSG_LNXREQ_COMMSQUALITY;
 261         quality.dbm.data = P80211ENUM_truth_true;
 262         quality.dbm.status = P80211ENUM_msgitem_status_data_ok;
 263
 264         /* send message to nsd */
 265         if (!wlandev->mlmerequest)
 266                 return -EOPNOTSUPP;
 267
 268         result = wlandev->mlmerequest(wlandev, (struct p80211msg *)&quality);
 269
 270         if (result == 0) {
 271                 sinfo->txrate.legacy = quality.txrate.data;
 272                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
 273                 sinfo->signal = quality.level.data;
 274                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
 275         }
 276
 277         return result;
 278 }
 279
 280 static int prism2_scan(struct wiphy *wiphy,
 281                        struct cfg80211_scan_request *request)
 282 {
 283         struct net_device *dev;
 284         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 285         struct wlandevice *wlandev;
 286         struct p80211msg_dot11req_scan msg1;
 287         struct p80211msg_dot11req_scan_results msg2;
 288         struct cfg80211_bss *bss;
 289         struct cfg80211_scan_info info = {};
 290
 291         int result;
 292         int err = 0;
 293         int numbss = 0;
 294         int i = 0;
 295         u8 ie_buf[46];
 296         int ie_len;
 297
 298         if (!request)
 299                 return -EINVAL;
 300
 301         dev = request->wdev->netdev;
 302         wlandev = dev->ml_priv;
 303
 304         if (priv->scan_request && priv->scan_request != request)
 305                 return -EBUSY;
 306
 307         if (wlandev->macmode == WLAN_MACMODE_ESS_AP) {
 308                 netdev_err(dev, "Can't scan in AP mode\n");
 309                 return -EOPNOTSUPP;
 310         }
 311
 312         priv->scan_request = request;
 313
 314         memset(&msg1, 0x00, sizeof(msg1));
 315         msg1.msgcode = DIDMSG_DOT11REQ_SCAN;
 316         msg1.bsstype.data = P80211ENUM_bsstype_any;
 317
 318         memset(&msg1.bssid.data.data, 0xFF, sizeof(msg1.bssid.data.data));
 319         msg1.bssid.data.len = 6;
 320
 321         if (request->n_ssids > 0) {
 322                 msg1.scantype.data = P80211ENUM_scantype_active;
 323                 msg1.ssid.data.len = request->ssids->ssid_len;
 324                 memcpy(msg1.ssid.data.data,
 325                        request->ssids->ssid, request->ssids->ssid_len);
 326         } else {
 327                 msg1.scantype.data = 0;
 328         }
 329         msg1.probedelay.data = 0;
 330
 331         for (i = 0;
 332                 (i < request->n_channels) && i < ARRAY_SIZE(prism2_channels);
 333                 i++)
 334                 msg1.channellist.data.data[i] =
 335                         ieee80211_frequency_to_channel(
 336                                 request->channels[i]->center_freq);
 337         msg1.channellist.data.len = request->n_channels;
 338
 339         msg1.maxchanneltime.data = 250;
 340         msg1.minchanneltime.data = 200;
 341
 342         result = p80211req_dorequest(wlandev, (u8 *)&msg1);
 343         if (result) {
 344                 err = prism2_result2err(msg1.resultcode.data);
 345                 goto exit;
 346         }
 347         /* Now retrieve scan results */
 348         numbss = msg1.numbss.data;
 349
 350         for (i = 0; i < numbss; i++) {
 351                 int freq;
 352
 353                 memset(&msg2, 0, sizeof(msg2));
 354                 msg2.msgcode = DIDMSG_DOT11REQ_SCAN_RESULTS;
 355                 msg2.bssindex.data = i;
 356
 357                 result = p80211req_dorequest(wlandev, (u8 *)&msg2);
 358                 if ((result != 0) ||
 359                     (msg2.resultcode.data != P80211ENUM_resultcode_success)) {
 360                         break;
 361                 }
 362
 363                 ie_buf[0] = WLAN_EID_SSID;
 364                 ie_buf[1] = msg2.ssid.data.len;
 365                 ie_len = ie_buf[1] + 2;
 366                 memcpy(&ie_buf[2], &msg2.ssid.data.data, msg2.ssid.data.len);
 367                 freq = ieee80211_channel_to_frequency(msg2.dschannel.data,
 368                                                       NL80211_BAND_2GHZ);
 369                 bss = cfg80211_inform_bss(wiphy,
 370                         ieee80211_get_channel(wiphy, freq),
 371                         CFG80211_BSS_FTYPE_UNKNOWN,
 372                         (const u8 *)&msg2.bssid.data.data,
 373                         msg2.timestamp.data, msg2.capinfo.data,
 374                         msg2.beaconperiod.data,
 375                         ie_buf,
 376                         ie_len,
 377                         (msg2.signal.data - 65536) * 100, /* Conversion to signed type */
 378                         GFP_KERNEL
 379                 );
 380
 381                 if (!bss) {
 382                         err = -ENOMEM;
 383                         goto exit;
 384                 }
 385
 386                 cfg80211_put_bss(wiphy, bss);
 387         }
 388
 389         if (result)
 390                 err = prism2_result2err(msg2.resultcode.data);
 391
 392 exit:
 393         info.aborted = !!(err);
 394         cfg80211_scan_done(request, &info);
 395         priv->scan_request = NULL;
 396         return err;
 397 }
 398
 399 static int prism2_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 400 {
 401         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 402         struct wlandevice *wlandev = priv->wlandev;
 403         u32 data;
 404         int result;
 405         int err = 0;
 406
 407         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 408                 if (wiphy->rts_threshold == -1)
 409                         data = 2347;
 410                 else
 411                         data = wiphy->rts_threshold;
 412
 413                 result = prism2_domibset_uint32(wlandev,
 414                                                 DIDMIB_DOT11MAC_OPERATIONTABLE_RTSTHRESHOLD,
 415                                                 data);
 416                 if (result) {
 417                         err = -EFAULT;
 418                         goto exit;
 419                 }
 420         }
 421
 422         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 423                 if (wiphy->frag_threshold == -1)
 424                         data = 2346;
 425                 else
 426                         data = wiphy->frag_threshold;
 427
 428                 result = prism2_domibset_uint32(wlandev,
 429                                                 DIDMIB_DOT11MAC_OPERATIONTABLE_FRAGMENTATIONTHRESHOLD,
 430                                                 data);
 431                 if (result) {
 432                         err = -EFAULT;
 433                         goto exit;
 434                 }
 435         }
 436
 437 exit:
 438         return err;
 439 }
 440
 441 static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
 442                           struct cfg80211_connect_params *sme)
 443 {
 444         struct wlandevice *wlandev = dev->ml_priv;
 445         struct ieee80211_channel *channel = sme->channel;
 446         struct p80211msg_lnxreq_autojoin msg_join;
 447         u32 did;
 448         int length = sme->ssid_len;
 449         int chan = -1;
 450         int is_wep = (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP40) ||
 451             (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP104);
 452         int result;
 453         int err = 0;
 454
 455         /* Set the channel */
 456         if (channel) {
 457                 chan = ieee80211_frequency_to_channel(channel->center_freq);
 458                 result = prism2_domibset_uint32(wlandev,
 459                                                 DIDMIB_DOT11PHY_DSSSTABLE_CURRENTCHANNEL,
 460                                                 chan);
 461                 if (result)
 462                         goto exit;
 463         }
 464
 465         /* Set the authorization */
 466         if ((sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) ||
 467             ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && !is_wep))
 468                 msg_join.authtype.data = P80211ENUM_authalg_opensystem;
 469         else if ((sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY) ||
 470                  ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && is_wep))
 471                 msg_join.authtype.data = P80211ENUM_authalg_sharedkey;
 472         else
 473                 netdev_warn(dev,
 474                             "Unhandled authorisation type for connect (%d)\n",
 475                             sme->auth_type);
 476
 477         /* Set the encryption - we only support wep */
 478         if (is_wep) {
 479                 if (sme->key) {
 480                         if (sme->key_idx >= NUM_WEPKEYS) {
 481                                 err = -EINVAL;
 482                                 goto exit;
 483                         }
 484
 485                         result = prism2_domibset_uint32(wlandev,
 486                                 DIDMIB_DOT11SMT_PRIVACYTABLE_WEPDEFAULTKEYID,
 487                                 sme->key_idx);
 488                         if (result)
 489                                 goto exit;
 490
 491                         /* send key to driver */
 492                         did = didmib_dot11smt_wepdefaultkeystable_key(
 493                                         sme->key_idx + 1);
 494                         result = prism2_domibset_pstr32(wlandev,
 495                                                         did, sme->key_len,
 496                                                         (u8 *)sme->key);
 497                         if (result)
 498                                 goto exit;
 499                 }
 500
 501                 /* Assume we should set privacy invoked and exclude unencrypted
 502                  * We could possible use sme->privacy here, but the assumption
 503                  * seems reasonable anyways
 504                  */
 505                 result = prism2_domibset_uint32(wlandev,
 506                                                 DIDMIB_DOT11SMT_PRIVACYTABLE_PRIVACYINVOKED,
 507                                                 P80211ENUM_truth_true);
 508                 if (result)
 509                         goto exit;
 510
 511                 result = prism2_domibset_uint32(wlandev,
 512                                                 DIDMIB_DOT11SMT_PRIVACYTABLE_EXCLUDEUNENCRYPTED,
 513                                                 P80211ENUM_truth_true);
 514                 if (result)
 515                         goto exit;
 516
 517         } else {
 518                 /* Assume we should unset privacy invoked
 519                  * and exclude unencrypted
 520                  */
 521                 result = prism2_domibset_uint32(wlandev,
 522                                                 DIDMIB_DOT11SMT_PRIVACYTABLE_PRIVACYINVOKED,
 523                                                 P80211ENUM_truth_false);
 524                 if (result)
 525                         goto exit;
 526
 527                 result = prism2_domibset_uint32(wlandev,
 528                                                 DIDMIB_DOT11SMT_PRIVACYTABLE_EXCLUDEUNENCRYPTED,
 529                                                 P80211ENUM_truth_false);
 530                 if (result)
 531                         goto exit;
 532         }
 533
 534         /* Now do the actual join. Note there is no way that I can
 535          * see to request a specific bssid
 536          */
 537         msg_join.msgcode = DIDMSG_LNXREQ_AUTOJOIN;
 538
 539         memcpy(msg_join.ssid.data.data, sme->ssid, length);
 540         msg_join.ssid.data.len = length;
 541
 542         result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
 543
 544 exit:
 545         if (result)
 546                 err = -EFAULT;
 547
 548         return err;
 549 }
 550
 551 static int prism2_disconnect(struct wiphy *wiphy, struct net_device *dev,
 552                              u16 reason_code)
 553 {
 554         struct wlandevice *wlandev = dev->ml_priv;
 555         struct p80211msg_lnxreq_autojoin msg_join;
 556         int result;
 557         int err = 0;
 558
 559         /* Do a join, with a bogus ssid. Thats the only way I can think of */
 560         msg_join.msgcode = DIDMSG_LNXREQ_AUTOJOIN;
 561
 562         memcpy(msg_join.ssid.data.data, "---", 3);
 563         msg_join.ssid.data.len = 3;
 564
 565         result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
 566
 567         if (result)
 568                 err = -EFAULT;
 569
 570         return err;
 571 }
 572
 573 static int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 574                             struct cfg80211_ibss_params *params)
 575 {
 576         return -EOPNOTSUPP;
 577 }
 578
 579 static int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 580 {
 581         return -EOPNOTSUPP;
 582 }
 583
 584 static int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 585                                enum nl80211_tx_power_setting type, int mbm)
 586 {
 587         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 588         struct wlandevice *wlandev = priv->wlandev;
 589         u32 data;
 590         int result;
 591         int err = 0;
 592
 593         if (type == NL80211_TX_POWER_AUTOMATIC)
 594                 data = 30;
 595         else
 596                 data = MBM_TO_DBM(mbm);
 597
 598         result = prism2_domibset_uint32(wlandev,
 599                 DIDMIB_DOT11PHY_TXPOWERTABLE_CURRENTTXPOWERLEVEL,
 600                 data);
 601
 602         if (result) {
 603                 err = -EFAULT;
 604                 goto exit;
 605         }
 606
 607 exit:
 608         return err;
 609 }
 610
 611 static int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 612                                int *dbm)
 613 {
 614         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 615         struct wlandevice *wlandev = priv->wlandev;
 616         struct p80211msg_dot11req_mibget msg;
 617         struct p80211item_uint32 *mibitem;
 618         int result;
 619         int err = 0;
 620
 621         mibitem = (struct p80211item_uint32 *)&msg.mibattribute.data;
 622         msg.msgcode = DIDMSG_DOT11REQ_MIBGET;
 623         mibitem->did = DIDMIB_DOT11PHY_TXPOWERTABLE_CURRENTTXPOWERLEVEL;
 624
 625         result = p80211req_dorequest(wlandev, (u8 *)&msg);
 626
 627         if (result) {
 628                 err = -EFAULT;
 629                 goto exit;
 630         }
 631
 632         *dbm = mibitem->data;
 633
 634 exit:
 635         return err;
 636 }
 637
 638 /* Interface callback functions, passing data back up to the cfg80211 layer */
 639 void prism2_connect_result(struct wlandevice *wlandev, u8 failed)
 640 {
 641         u16 status = failed ?
 642                      WLAN_STATUS_UNSPECIFIED_FAILURE : WLAN_STATUS_SUCCESS;
 643
 644         cfg80211_connect_result(wlandev->netdev, wlandev->bssid,
 645                                 NULL, 0, NULL, 0, status, GFP_KERNEL);
 646 }
 647
 648 void prism2_disconnected(struct wlandevice *wlandev)
 649 {
 650         cfg80211_disconnected(wlandev->netdev, 0, NULL,
 651                               0, false, GFP_KERNEL);
 652 }
 653
 654 void prism2_roamed(struct wlandevice *wlandev)
 655 {
 656         struct cfg80211_roam_info roam_info = {
 657                 .bssid = wlandev->bssid,
 658         };
 659
 660         cfg80211_roamed(wlandev->netdev, &roam_info, GFP_KERNEL);
 661 }
 662
 663 /* Structures for declaring wiphy interface */
 664 static const struct cfg80211_ops prism2_usb_cfg_ops = {
 665         .change_virtual_intf = prism2_change_virtual_intf,
 666         .add_key = prism2_add_key,
 667         .get_key = prism2_get_key,
 668         .del_key = prism2_del_key,
 669         .set_default_key = prism2_set_default_key,
 670         .get_station = prism2_get_station,
 671         .scan = prism2_scan,
 672         .set_wiphy_params = prism2_set_wiphy_params,
 673         .connect = prism2_connect,
 674         .disconnect = prism2_disconnect,
 675         .join_ibss = prism2_join_ibss,
 676         .leave_ibss = prism2_leave_ibss,
 677         .set_tx_power = prism2_set_tx_power,
 678         .get_tx_power = prism2_get_tx_power,
 679 };
 680
 681 /* Functions to create/free wiphy interface */
 682 static struct wiphy *wlan_create_wiphy(struct device *dev,
 683                                        struct wlandevice *wlandev)
 684 {
 685         struct wiphy *wiphy;
 686         struct prism2_wiphy_private *priv;
 687
 688         wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
 689         if (!wiphy)
 690                 return NULL;
 691
 692         priv = wiphy_priv(wiphy);
 693         priv->wlandev = wlandev;
 694         memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
 695         memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
 696         priv->band.channels = priv->channels;
 697         priv->band.n_channels = ARRAY_SIZE(prism2_channels);
 698         priv->band.bitrates = priv->rates;
 699         priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
 700         priv->band.band = NL80211_BAND_2GHZ;
 701         priv->band.ht_cap.ht_supported = false;
 702         wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
 703
 704         set_wiphy_dev(wiphy, dev);
 705         wiphy->privid = prism2_wiphy_privid;
 706         wiphy->max_scan_ssids = 1;
 707         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
 708                                  | BIT(NL80211_IFTYPE_ADHOC);
 709         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 710         wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
 711         wiphy->cipher_suites = prism2_cipher_suites;
 712
 713         if (wiphy_register(wiphy) < 0) {
 714                 wiphy_free(wiphy);
 715                 return NULL;
 716         }
 717
 718         return wiphy;
 719 }
 720
 721 static void wlan_free_wiphy(struct wiphy *wiphy)
 722 {
 723         wiphy_unregister(wiphy);
 724         wiphy_free(wiphy);
 725 }