drivers/staging/wlan-ng/cfg80211.c

   1 /* cfg80211 Interface for prism2_usb module */
   2 #include "hfa384x.h"
   3 #include "prism2mgmt.h"
   4
   5 /* Prism2 channel/frequency/bitrate declarations */
   6 static const struct ieee80211_channel prism2_channels[] = {
   7         { .center_freq = 2412 },
   8         { .center_freq = 2417 },
   9         { .center_freq = 2422 },
  10         { .center_freq = 2427 },
  11         { .center_freq = 2432 },
  12         { .center_freq = 2437 },
  13         { .center_freq = 2442 },
  14         { .center_freq = 2447 },
  15         { .center_freq = 2452 },
  16         { .center_freq = 2457 },
  17         { .center_freq = 2462 },
  18         { .center_freq = 2467 },
  19         { .center_freq = 2472 },
  20         { .center_freq = 2484 },
  21 };
  22
  23 static const struct ieee80211_rate prism2_rates[] = {
  24         { .bitrate = 10 },
  25         { .bitrate = 20 },
  26         { .bitrate = 55 },
  27         { .bitrate = 110 }
  28 };
  29
  30 #define PRISM2_NUM_CIPHER_SUITES 2
  31 static const u32 prism2_cipher_suites[PRISM2_NUM_CIPHER_SUITES] = {
  32         WLAN_CIPHER_SUITE_WEP40,
  33         WLAN_CIPHER_SUITE_WEP104
  34 };
  35
  36 /* prism2 device private data */
  37 struct prism2_wiphy_private {
  38         wlandevice_t *wlandev;
  39
  40         struct ieee80211_supported_band band;
  41         struct ieee80211_channel channels[ARRAY_SIZE(prism2_channels)];
  42         struct ieee80211_rate rates[ARRAY_SIZE(prism2_rates)];
  43
  44         struct cfg80211_scan_request *scan_request;
  45 };
  46
  47 static const void * const prism2_wiphy_privid = &prism2_wiphy_privid;
  48
  49 /* Helper Functions */
  50 static int prism2_result2err(int prism2_result)
  51 {
  52         int err = 0;
  53
  54         switch (prism2_result) {
  55         case P80211ENUM_resultcode_invalid_parameters:
  56                 err = -EINVAL;
  57                 break;
  58         case P80211ENUM_resultcode_implementation_failure:
  59                 err = -EIO;
  60                 break;
  61         case P80211ENUM_resultcode_not_supported:
  62                 err = -EOPNOTSUPP;
  63                 break;
  64         default:
  65                 err = 0;
  66                 break;
  67         }
  68
  69         return err;
  70 }
  71
  72 static int prism2_domibset_uint32(wlandevice_t *wlandev, u32 did, u32 data)
  73 {
  74         struct p80211msg_dot11req_mibset msg;
  75         p80211item_uint32_t *mibitem =
  76                         (p80211item_uint32_t *) &msg.mibattribute.data;
  77
  78         msg.msgcode = DIDmsg_dot11req_mibset;
  79         mibitem->did = did;
  80         mibitem->data = data;
  81
  82         return p80211req_dorequest(wlandev, (u8 *) &msg);
  83 }
  84
  85 static int prism2_domibset_pstr32(wlandevice_t *wlandev,
  86                                   u32 did, u8 len, const u8 *data)
  87 {
  88         struct p80211msg_dot11req_mibset msg;
  89         p80211item_pstr32_t *mibitem =
  90                         (p80211item_pstr32_t *) &msg.mibattribute.data;
  91
  92         msg.msgcode = DIDmsg_dot11req_mibset;
  93         mibitem->did = did;
  94         mibitem->data.len = len;
  95         memcpy(mibitem->data.data, data, len);
  96
  97         return p80211req_dorequest(wlandev, (u8 *) &msg);
  98 }
  99
 100 /* The interface functions, called by the cfg80211 layer */
 101 static int prism2_change_virtual_intf(struct wiphy *wiphy,
 102                                       struct net_device *dev,
 103                                       enum nl80211_iftype type, u32 *flags,
 104                                       struct vif_params *params)
 105 {
 106         wlandevice_t *wlandev = dev->ml_priv;
 107         u32 data;
 108         int result;
 109         int err = 0;
 110
 111         switch (type) {
 112         case NL80211_IFTYPE_ADHOC:
 113                 if (wlandev->macmode == WLAN_MACMODE_IBSS_STA)
 114                         goto exit;
 115                 wlandev->macmode = WLAN_MACMODE_IBSS_STA;
 116                 data = 0;
 117                 break;
 118         case NL80211_IFTYPE_STATION:
 119                 if (wlandev->macmode == WLAN_MACMODE_ESS_STA)
 120                         goto exit;
 121                 wlandev->macmode = WLAN_MACMODE_ESS_STA;
 122                 data = 1;
 123                 break;
 124         default:
 125                 netdev_warn(dev, "Operation mode: %d not support\n", type);
 126                 return -EOPNOTSUPP;
 127         }
 128
 129         /* Set Operation mode to the PORT TYPE RID */
 130         result = prism2_domibset_uint32(wlandev,
 131                                         DIDmib_p2_p2Static_p2CnfPortType,
 132                                         data);
 133
 134         if (result)
 135                 err = -EFAULT;
 136
 137         dev->ieee80211_ptr->iftype = type;
 138
 139 exit:
 140         return err;
 141 }
 142
 143 static int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
 144                           u8 key_index, bool pairwise, const u8 *mac_addr,
 145                           struct key_params *params)
 146 {
 147         wlandevice_t *wlandev = dev->ml_priv;
 148         u32 did;
 149
 150         int err = 0;
 151         int result = 0;
 152
 153         switch (params->cipher) {
 154         case WLAN_CIPHER_SUITE_WEP40:
 155         case WLAN_CIPHER_SUITE_WEP104:
 156                 result = prism2_domibset_uint32(wlandev,
 157                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 158                                                 key_index);
 159                 if (result)
 160                         goto exit;
 161
 162                 /* send key to driver */
 163                 switch (key_index) {
 164                 case 0:
 165                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 166                         break;
 167
 168                 case 1:
 169                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 170                         break;
 171
 172                 case 2:
 173                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 174                         break;
 175
 176                 case 3:
 177                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 178                         break;
 179
 180                 default:
 181                         err = -EINVAL;
 182                         goto exit;
 183                 }
 184
 185                 result = prism2_domibset_pstr32(wlandev, did,
 186                                                 params->key_len, params->key);
 187                 if (result)
 188                         goto exit;
 189                 break;
 190
 191         default:
 192                 pr_debug("Unsupported cipher suite\n");
 193                 result = 1;
 194         }
 195
 196 exit:
 197         if (result)
 198                 err = -EFAULT;
 199
 200         return err;
 201 }
 202
 203 static int prism2_get_key(struct wiphy *wiphy, struct net_device *dev,
 204                           u8 key_index, bool pairwise,
 205                           const u8 *mac_addr, void *cookie,
 206                           void (*callback)(void *cookie, struct key_params*))
 207 {
 208         wlandevice_t *wlandev = dev->ml_priv;
 209         struct key_params params;
 210         int len;
 211
 212         if (key_index >= NUM_WEPKEYS)
 213                 return -EINVAL;
 214
 215         len = wlandev->wep_keylens[key_index];
 216         memset(&params, 0, sizeof(params));
 217
 218         if (len == 13)
 219                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 220         else if (len == 5)
 221                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 222         else
 223                 return -ENOENT;
 224         params.key_len = len;
 225         params.key = wlandev->wep_keys[key_index];
 226         params.seq_len = 0;
 227
 228         callback(cookie, &params);
 229
 230         return 0;
 231 }
 232
 233 static int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
 234                           u8 key_index, bool pairwise, const u8 *mac_addr)
 235 {
 236         wlandevice_t *wlandev = dev->ml_priv;
 237         u32 did;
 238         int err = 0;
 239         int result = 0;
 240
 241         /* There is no direct way in the hardware (AFAIK) of removing
 242            a key, so we will cheat by setting the key to a bogus value */
 243         /* send key to driver */
 244         switch (key_index) {
 245         case 0:
 246                 did =
 247                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 248                 break;
 249
 250         case 1:
 251                 did =
 252                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 253                 break;
 254
 255         case 2:
 256                 did =
 257                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 258                 break;
 259
 260         case 3:
 261                 did =
 262                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 263                 break;
 264
 265         default:
 266                 err = -EINVAL;
 267                 goto exit;
 268         }
 269
 270         result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");
 271
 272 exit:
 273         if (result)
 274                 err = -EFAULT;
 275
 276         return err;
 277 }
 278
 279 static int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
 280                                   u8 key_index, bool unicast, bool multicast)
 281 {
 282         wlandevice_t *wlandev = dev->ml_priv;
 283
 284         int err = 0;
 285         int result = 0;
 286
 287         result = prism2_domibset_uint32(wlandev,
 288                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 289                 key_index);
 290
 291         if (result)
 292                 err = -EFAULT;
 293
 294         return err;
 295 }
 296
 297 static int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
 298                               const u8 *mac, struct station_info *sinfo)
 299 {
 300         wlandevice_t *wlandev = dev->ml_priv;
 301         struct p80211msg_lnxreq_commsquality quality;
 302         int result;
 303
 304         memset(sinfo, 0, sizeof(*sinfo));
 305
 306         if ((wlandev == NULL) || (wlandev->msdstate != WLAN_MSD_RUNNING))
 307                 return -EOPNOTSUPP;
 308
 309         /* build request message */
 310         quality.msgcode = DIDmsg_lnxreq_commsquality;
 311         quality.dbm.data = P80211ENUM_truth_true;
 312         quality.dbm.status = P80211ENUM_msgitem_status_data_ok;
 313
 314         /* send message to nsd */
 315         if (wlandev->mlmerequest == NULL)
 316                 return -EOPNOTSUPP;
 317
 318         result = wlandev->mlmerequest(wlandev, (struct p80211msg *) &quality);
 319
 320         if (result == 0) {
 321                 sinfo->txrate.legacy = quality.txrate.data;
 322                 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
 323                 sinfo->signal = quality.level.data;
 324                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
 325         }
 326
 327         return result;
 328 }
 329
 330 static int prism2_scan(struct wiphy *wiphy,
 331                        struct cfg80211_scan_request *request)
 332 {
 333         struct net_device *dev;
 334         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 335         wlandevice_t *wlandev;
 336         struct p80211msg_dot11req_scan msg1;
 337         struct p80211msg_dot11req_scan_results msg2;
 338         struct cfg80211_bss *bss;
 339         int result;
 340         int err = 0;
 341         int numbss = 0;
 342         int i = 0;
 343         u8 ie_buf[46];
 344         int ie_len;
 345
 346         if (!request)
 347                 return -EINVAL;
 348
 349         dev = request->wdev->netdev;
 350         wlandev = dev->ml_priv;
 351
 352         if (priv->scan_request && priv->scan_request != request)
 353                 return -EBUSY;
 354
 355         if (wlandev->macmode == WLAN_MACMODE_ESS_AP) {
 356                 netdev_err(dev, "Can't scan in AP mode\n");
 357                 return -EOPNOTSUPP;
 358         }
 359
 360         priv->scan_request = request;
 361
 362         memset(&msg1, 0x00, sizeof(struct p80211msg_dot11req_scan));
 363         msg1.msgcode = DIDmsg_dot11req_scan;
 364         msg1.bsstype.data = P80211ENUM_bsstype_any;
 365
 366         memset(&msg1.bssid.data.data, 0xFF, sizeof(msg1.bssid.data.data));
 367         msg1.bssid.data.len = 6;
 368
 369         if (request->n_ssids > 0) {
 370                 msg1.scantype.data = P80211ENUM_scantype_active;
 371                 msg1.ssid.data.len = request->ssids->ssid_len;
 372                 memcpy(msg1.ssid.data.data,
 373                         request->ssids->ssid, request->ssids->ssid_len);
 374         } else {
 375                 msg1.scantype.data = 0;
 376         }
 377         msg1.probedelay.data = 0;
 378
 379         for (i = 0;
 380                 (i < request->n_channels) && i < ARRAY_SIZE(prism2_channels);
 381                 i++)
 382                 msg1.channellist.data.data[i] =
 383                         ieee80211_frequency_to_channel(
 384                                 request->channels[i]->center_freq);
 385         msg1.channellist.data.len = request->n_channels;
 386
 387         msg1.maxchanneltime.data = 250;
 388         msg1.minchanneltime.data = 200;
 389
 390         result = p80211req_dorequest(wlandev, (u8 *) &msg1);
 391         if (result) {
 392                 err = prism2_result2err(msg1.resultcode.data);
 393                 goto exit;
 394         }
 395         /* Now retrieve scan results */
 396         numbss = msg1.numbss.data;
 397
 398         for (i = 0; i < numbss; i++) {
 399                 int freq;
 400
 401                 memset(&msg2, 0, sizeof(msg2));
 402                 msg2.msgcode = DIDmsg_dot11req_scan_results;
 403                 msg2.bssindex.data = i;
 404
 405                 result = p80211req_dorequest(wlandev, (u8 *) &msg2);
 406                 if ((result != 0) ||
 407                     (msg2.resultcode.data != P80211ENUM_resultcode_success)) {
 408                         break;
 409                 }
 410
 411                 ie_buf[0] = WLAN_EID_SSID;
 412                 ie_buf[1] = msg2.ssid.data.len;
 413                 ie_len = ie_buf[1] + 2;
 414                 memcpy(&ie_buf[2], &(msg2.ssid.data.data), msg2.ssid.data.len);
 415                 freq = ieee80211_channel_to_frequency(msg2.dschannel.data,
 416                                                       IEEE80211_BAND_2GHZ);
 417                 bss = cfg80211_inform_bss(wiphy,
 418                         ieee80211_get_channel(wiphy, freq),
 419                         CFG80211_BSS_FTYPE_UNKNOWN,
 420                         (const u8 *) &(msg2.bssid.data.data),
 421                         msg2.timestamp.data, msg2.capinfo.data,
 422                         msg2.beaconperiod.data,
 423                         ie_buf,
 424                         ie_len,
 425                         (msg2.signal.data - 65536) * 100, /* Conversion to signed type */
 426                         GFP_KERNEL
 427                 );
 428
 429                 if (!bss) {
 430                         err = -ENOMEM;
 431                         goto exit;
 432                 }
 433
 434                 cfg80211_put_bss(wiphy, bss);
 435         }
 436
 437         if (result)
 438                 err = prism2_result2err(msg2.resultcode.data);
 439
 440 exit:
 441         cfg80211_scan_done(request, err ? 1 : 0);
 442         priv->scan_request = NULL;
 443         return err;
 444 }
 445
 446 static int prism2_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 447 {
 448         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 449         wlandevice_t *wlandev = priv->wlandev;
 450         u32 data;
 451         int result;
 452         int err = 0;
 453
 454         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 455                 if (wiphy->rts_threshold == -1)
 456                         data = 2347;
 457                 else
 458                         data = wiphy->rts_threshold;
 459
 460                 result = prism2_domibset_uint32(wlandev,
 461                                                 DIDmib_dot11mac_dot11OperationTable_dot11RTSThreshold,
 462                                                 data);
 463                 if (result) {
 464                         err = -EFAULT;
 465                         goto exit;
 466                 }
 467         }
 468
 469         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 470                 if (wiphy->frag_threshold == -1)
 471                         data = 2346;
 472                 else
 473                         data = wiphy->frag_threshold;
 474
 475                 result = prism2_domibset_uint32(wlandev,
 476                                                 DIDmib_dot11mac_dot11OperationTable_dot11FragmentationThreshold,
 477                                                 data);
 478                 if (result) {
 479                         err = -EFAULT;
 480                         goto exit;
 481                 }
 482         }
 483
 484 exit:
 485         return err;
 486 }
 487
 488 static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
 489                           struct cfg80211_connect_params *sme)
 490 {
 491         wlandevice_t *wlandev = dev->ml_priv;
 492         struct ieee80211_channel *channel = sme->channel;
 493         struct p80211msg_lnxreq_autojoin msg_join;
 494         u32 did;
 495         int length = sme->ssid_len;
 496         int chan = -1;
 497         int is_wep = (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP40) ||
 498             (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP104);
 499         int result;
 500         int err = 0;
 501
 502         /* Set the channel */
 503         if (channel) {
 504                 chan = ieee80211_frequency_to_channel(channel->center_freq);
 505                 result = prism2_domibset_uint32(wlandev,
 506                                                 DIDmib_dot11phy_dot11PhyDSSSTable_dot11CurrentChannel,
 507                                                 chan);
 508                 if (result)
 509                         goto exit;
 510         }
 511
 512         /* Set the authorization */
 513         if ((sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) ||
 514                 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && !is_wep))
 515                         msg_join.authtype.data = P80211ENUM_authalg_opensystem;
 516         else if ((sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY) ||
 517                 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && is_wep))
 518                         msg_join.authtype.data = P80211ENUM_authalg_sharedkey;
 519         else
 520                 netdev_warn(dev,
 521                         "Unhandled authorisation type for connect (%d)\n",
 522                         sme->auth_type);
 523
 524         /* Set the encryption - we only support wep */
 525         if (is_wep) {
 526                 if (sme->key) {
 527                         result = prism2_domibset_uint32(wlandev,
 528                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 529                                 sme->key_idx);
 530                         if (result)
 531                                 goto exit;
 532
 533                         /* send key to driver */
 534                         switch (sme->key_idx) {
 535                         case 0:
 536                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 537                                 break;
 538
 539                         case 1:
 540                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 541                                 break;
 542
 543                         case 2:
 544                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 545                                 break;
 546
 547                         case 3:
 548                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 549                                 break;
 550
 551                         default:
 552                                 err = -EINVAL;
 553                                 goto exit;
 554                         }
 555
 556                         result = prism2_domibset_pstr32(wlandev,
 557                                                         did, sme->key_len,
 558                                                         (u8 *)sme->key);
 559                         if (result)
 560                                 goto exit;
 561
 562                 }
 563
 564                 /* Assume we should set privacy invoked and exclude unencrypted
 565                    We could possibly use sme->privacy here, but the assumption
 566                    seems reasonable anyway */
 567                 result = prism2_domibset_uint32(wlandev,
 568                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 569                                                 P80211ENUM_truth_true);
 570                 if (result)
 571                         goto exit;
 572
 573                 result = prism2_domibset_uint32(wlandev,
 574                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 575                                                 P80211ENUM_truth_true);
 576                 if (result)
 577                         goto exit;
 578
 579         } else {
 580                 /* Assume we should unset privacy invoked
 581                    and exclude unencrypted */
 582                 result = prism2_domibset_uint32(wlandev,
 583                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 584                                                 P80211ENUM_truth_false);
 585                 if (result)
 586                         goto exit;
 587
 588                 result = prism2_domibset_uint32(wlandev,
 589                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 590                                                 P80211ENUM_truth_false);
 591                 if (result)
 592                         goto exit;
 593
 594         }
 595
 596         /* Now do the actual join. Note there is no way that I can
 597            see to request a specific bssid */
 598         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 599
 600         memcpy(msg_join.ssid.data.data, sme->ssid, length);
 601         msg_join.ssid.data.len = length;
 602
 603         result = p80211req_dorequest(wlandev, (u8 *) &msg_join);
 604
 605 exit:
 606         if (result)
 607                 err = -EFAULT;
 608
 609         return err;
 610 }
 611
 612 static int prism2_disconnect(struct wiphy *wiphy, struct net_device *dev,
 613                              u16 reason_code)
 614 {
 615         wlandevice_t *wlandev = dev->ml_priv;
 616         struct p80211msg_lnxreq_autojoin msg_join;
 617         int result;
 618         int err = 0;
 619
 620         /* Do a join, with a bogus ssid. Thats the only way I can think of */
 621         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 622
 623         memcpy(msg_join.ssid.data.data, "---", 3);
 624         msg_join.ssid.data.len = 3;
 625
 626         result = p80211req_dorequest(wlandev, (u8 *) &msg_join);
 627
 628         if (result)
 629                 err = -EFAULT;
 630
 631         return err;
 632 }
 633
 634 static int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 635                             struct cfg80211_ibss_params *params)
 636 {
 637         return -EOPNOTSUPP;
 638 }
 639
 640 static int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 641 {
 642         return -EOPNOTSUPP;
 643 }
 644
 645 static int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 646                                enum nl80211_tx_power_setting type, int mbm)
 647 {
 648         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 649         wlandevice_t *wlandev = priv->wlandev;
 650         u32 data;
 651         int result;
 652         int err = 0;
 653
 654         if (type == NL80211_TX_POWER_AUTOMATIC)
 655                 data = 30;
 656         else
 657                 data = MBM_TO_DBM(mbm);
 658
 659         result = prism2_domibset_uint32(wlandev,
 660                 DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel,
 661                 data);
 662
 663         if (result) {
 664                 err = -EFAULT;
 665                 goto exit;
 666         }
 667
 668 exit:
 669         return err;
 670 }
 671
 672 static int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 673                                int *dbm)
 674 {
 675         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 676         wlandevice_t *wlandev = priv->wlandev;
 677         struct p80211msg_dot11req_mibget msg;
 678         p80211item_uint32_t *mibitem;
 679         int result;
 680         int err = 0;
 681
 682         mibitem = (p80211item_uint32_t *) &msg.mibattribute.data;
 683         msg.msgcode = DIDmsg_dot11req_mibget;
 684         mibitem->did =
 685             DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel;
 686
 687         result = p80211req_dorequest(wlandev, (u8 *) &msg);
 688
 689         if (result) {
 690                 err = -EFAULT;
 691                 goto exit;
 692         }
 693
 694         *dbm = mibitem->data;
 695
 696 exit:
 697         return err;
 698 }
 699
 700 /* Interface callback functions, passing data back up to the cfg80211 layer */
 701 void prism2_connect_result(wlandevice_t *wlandev, u8 failed)
 702 {
 703         u16 status = failed ?
 704                      WLAN_STATUS_UNSPECIFIED_FAILURE : WLAN_STATUS_SUCCESS;
 705
 706         cfg80211_connect_result(wlandev->netdev, wlandev->bssid,
 707                                 NULL, 0, NULL, 0, status, GFP_KERNEL);
 708 }
 709
 710 void prism2_disconnected(wlandevice_t *wlandev)
 711 {
 712         cfg80211_disconnected(wlandev->netdev, 0, NULL,
 713                 0, false, GFP_KERNEL);
 714 }
 715
 716 void prism2_roamed(wlandevice_t *wlandev)
 717 {
 718         cfg80211_roamed(wlandev->netdev, NULL, wlandev->bssid,
 719                 NULL, 0, NULL, 0, GFP_KERNEL);
 720 }
 721
 722 /* Structures for declaring wiphy interface */
 723 static const struct cfg80211_ops prism2_usb_cfg_ops = {
 724         .change_virtual_intf = prism2_change_virtual_intf,
 725         .add_key = prism2_add_key,
 726         .get_key = prism2_get_key,
 727         .del_key = prism2_del_key,
 728         .set_default_key = prism2_set_default_key,
 729         .get_station = prism2_get_station,
 730         .scan = prism2_scan,
 731         .set_wiphy_params = prism2_set_wiphy_params,
 732         .connect = prism2_connect,
 733         .disconnect = prism2_disconnect,
 734         .join_ibss = prism2_join_ibss,
 735         .leave_ibss = prism2_leave_ibss,
 736         .set_tx_power = prism2_set_tx_power,
 737         .get_tx_power = prism2_get_tx_power,
 738 };
 739
 740 /* Functions to create/free wiphy interface */
 741 static struct wiphy *wlan_create_wiphy(struct device *dev, wlandevice_t *wlandev)
 742 {
 743         struct wiphy *wiphy;
 744         struct prism2_wiphy_private *priv;
 745
 746         wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
 747         if (!wiphy)
 748                 return NULL;
 749
 750         priv = wiphy_priv(wiphy);
 751         priv->wlandev = wlandev;
 752         memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
 753         memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
 754         priv->band.channels = priv->channels;
 755         priv->band.n_channels = ARRAY_SIZE(prism2_channels);
 756         priv->band.bitrates = priv->rates;
 757         priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
 758         priv->band.band = IEEE80211_BAND_2GHZ;
 759         priv->band.ht_cap.ht_supported = false;
 760         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 761
 762         set_wiphy_dev(wiphy, dev);
 763         wiphy->privid = prism2_wiphy_privid;
 764         wiphy->max_scan_ssids = 1;
 765         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
 766                                  | BIT(NL80211_IFTYPE_ADHOC);
 767         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 768         wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
 769         wiphy->cipher_suites = prism2_cipher_suites;
 770
 771         if (wiphy_register(wiphy) < 0)
 772                 return NULL;
 773
 774         return wiphy;
 775 }
 776
 777 static void wlan_free_wiphy(struct wiphy *wiphy)
 778 {
 779         wiphy_unregister(wiphy);
 780         wiphy_free(wiphy);
 781 }