drivers/staging/wlan-ng/cfg80211.c

   1 /* cfg80211 Interface for prism2_usb module */
   2
   3
   4 /* Prism2 channel/frequency/bitrate declarations */
   5 static const struct ieee80211_channel prism2_channels[] = {
   6         { .center_freq = 2412 },
   7         { .center_freq = 2417 },
   8         { .center_freq = 2422 },
   9         { .center_freq = 2427 },
  10         { .center_freq = 2432 },
  11         { .center_freq = 2437 },
  12         { .center_freq = 2442 },
  13         { .center_freq = 2447 },
  14         { .center_freq = 2452 },
  15         { .center_freq = 2457 },
  16         { .center_freq = 2462 },
  17         { .center_freq = 2467 },
  18         { .center_freq = 2472 },
  19         { .center_freq = 2484 },
  20 };
  21
  22 static const struct ieee80211_rate prism2_rates[] = {
  23         { .bitrate = 10 },
  24         { .bitrate = 20 },
  25         { .bitrate = 55 },
  26         { .bitrate = 110 }
  27 };
  28
  29 #define PRISM2_NUM_CIPHER_SUITES 2
  30 static const u32 prism2_cipher_suites[PRISM2_NUM_CIPHER_SUITES] = {
  31         WLAN_CIPHER_SUITE_WEP40,
  32         WLAN_CIPHER_SUITE_WEP104
  33 };
  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
  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(wlandevice_t *wlandev, u32 did, u32 data)
  74 {
  75         struct p80211msg_dot11req_mibset msg;
  76         p80211item_uint32_t *mibitem =
  77                         (p80211item_uint32_t *) &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(wlandevice_t *wlandev,
  87                                   u32 did, u8 len, u8 *data)
  88 {
  89         struct p80211msg_dot11req_mibset msg;
  90         p80211item_pstr32_t *mibitem =
  91                         (p80211item_pstr32_t *) &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
 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, u32 *flags,
 106                                       struct vif_params *params)
 107 {
 108         wlandevice_t *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_p2Static_p2CnfPortType,
 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         wlandevice_t *wlandev = dev->ml_priv;
 150         u32 did;
 151
 152         int err = 0;
 153         int result = 0;
 154
 155         switch (params->cipher) {
 156         case WLAN_CIPHER_SUITE_WEP40:
 157         case WLAN_CIPHER_SUITE_WEP104:
 158                 result = prism2_domibset_uint32(wlandev,
 159                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 160                                                 key_index);
 161                 if (result)
 162                         goto exit;
 163
 164                 /* send key to driver */
 165                 switch (key_index) {
 166                 case 0:
 167                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 168                         break;
 169
 170                 case 1:
 171                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 172                         break;
 173
 174                 case 2:
 175                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 176                         break;
 177
 178                 case 3:
 179                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 180                         break;
 181
 182                 default:
 183                         err = -EINVAL;
 184                         goto exit;
 185                 }
 186
 187                 result = prism2_domibset_pstr32(wlandev, did,
 188                                                 params->key_len, params->key);
 189                 if (result)
 190                         goto exit;
 191                 break;
 192
 193         default:
 194                 pr_debug("Unsupported cipher suite\n");
 195                 result = 1;
 196         }
 197
 198 exit:
 199         if (result)
 200                 err = -EFAULT;
 201
 202         return err;
 203 }
 204
 205 static int prism2_get_key(struct wiphy *wiphy, struct net_device *dev,
 206                           u8 key_index, bool pairwise,
 207                           const u8 *mac_addr, void *cookie,
 208                           void (*callback)(void *cookie, struct key_params*))
 209 {
 210         wlandevice_t *wlandev = dev->ml_priv;
 211         struct key_params params;
 212         int len;
 213
 214         if (key_index >= NUM_WEPKEYS)
 215                 return -EINVAL;
 216
 217         len = wlandev->wep_keylens[key_index];
 218         memset(&params, 0, sizeof(params));
 219
 220         if (len == 13)
 221                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 222         else if (len == 5)
 223                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 224         else
 225                 return -ENOENT;
 226         params.key_len = len;
 227         params.key = wlandev->wep_keys[key_index];
 228         params.seq_len = 0;
 229
 230         callback(cookie, &params);
 231
 232         return 0;
 233 }
 234
 235 static int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
 236                           u8 key_index, bool pairwise, const u8 *mac_addr)
 237 {
 238         wlandevice_t *wlandev = dev->ml_priv;
 239         u32 did;
 240         int err = 0;
 241         int result = 0;
 242
 243         /* There is no direct way in the hardware (AFAIK) of removing
 244            a key, so we will cheat by setting the key to a bogus value */
 245         /* send key to driver */
 246         switch (key_index) {
 247         case 0:
 248                 did =
 249                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 250                 break;
 251
 252         case 1:
 253                 did =
 254                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 255                 break;
 256
 257         case 2:
 258                 did =
 259                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 260                 break;
 261
 262         case 3:
 263                 did =
 264                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 265                 break;
 266
 267         default:
 268                 err = -EINVAL;
 269                 goto exit;
 270         }
 271
 272         result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");
 273
 274 exit:
 275         if (result)
 276                 err = -EFAULT;
 277
 278         return err;
 279 }
 280
 281 static int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
 282                                   u8 key_index, bool unicast, bool multicast)
 283 {
 284         wlandevice_t *wlandev = dev->ml_priv;
 285
 286         int err = 0;
 287         int result = 0;
 288
 289         result = prism2_domibset_uint32(wlandev,
 290                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 291                 key_index);
 292
 293         if (result)
 294                 err = -EFAULT;
 295
 296         return err;
 297 }
 298
 299
 300 static int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
 301                               u8 *mac, struct station_info *sinfo)
 302 {
 303         wlandevice_t *wlandev = dev->ml_priv;
 304         struct p80211msg_lnxreq_commsquality quality;
 305         int result;
 306
 307         memset(sinfo, 0, sizeof(*sinfo));
 308
 309         if ((wlandev == NULL) || (wlandev->msdstate != WLAN_MSD_RUNNING))
 310                 return -EOPNOTSUPP;
 311
 312         /* build request message */
 313         quality.msgcode = DIDmsg_lnxreq_commsquality;
 314         quality.dbm.data = P80211ENUM_truth_true;
 315         quality.dbm.status = P80211ENUM_msgitem_status_data_ok;
 316
 317         /* send message to nsd */
 318         if (wlandev->mlmerequest == NULL)
 319                 return -EOPNOTSUPP;
 320
 321         result = wlandev->mlmerequest(wlandev, (struct p80211msg *) &quality);
 322
 323
 324         if (result == 0) {
 325                 sinfo->txrate.legacy = quality.txrate.data;
 326                 sinfo->filled |= STATION_INFO_TX_BITRATE;
 327                 sinfo->signal = quality.level.data;
 328                 sinfo->filled |= STATION_INFO_SIGNAL;
 329         }
 330
 331         return result;
 332 }
 333
 334 static int prism2_scan(struct wiphy *wiphy,
 335                        struct cfg80211_scan_request *request)
 336 {
 337         struct net_device *dev;
 338         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 339         wlandevice_t *wlandev;
 340         struct p80211msg_dot11req_scan msg1;
 341         struct p80211msg_dot11req_scan_results msg2;
 342         struct cfg80211_bss *bss;
 343         int result;
 344         int err = 0;
 345         int numbss = 0;
 346         int i = 0;
 347         u8 ie_buf[46];
 348         int ie_len;
 349
 350         if (!request)
 351                 return -EINVAL;
 352
 353         dev = request->wdev->netdev;
 354         wlandev = dev->ml_priv;
 355
 356         if (priv->scan_request && priv->scan_request != request)
 357                 return -EBUSY;
 358
 359         if (wlandev->macmode == WLAN_MACMODE_ESS_AP) {
 360                 netdev_err(dev, "Can't scan in AP mode\n");
 361                 return -EOPNOTSUPP;
 362         }
 363
 364         priv->scan_request = request;
 365
 366         memset(&msg1, 0x00, sizeof(struct p80211msg_dot11req_scan));
 367         msg1.msgcode = DIDmsg_dot11req_scan;
 368         msg1.bsstype.data = P80211ENUM_bsstype_any;
 369
 370         memset(&msg1.bssid.data.data, 0xFF, sizeof(msg1.bssid.data.data));
 371         msg1.bssid.data.len = 6;
 372
 373         if (request->n_ssids > 0) {
 374                 msg1.scantype.data = P80211ENUM_scantype_active;
 375                 msg1.ssid.data.len = request->ssids->ssid_len;
 376                 memcpy(msg1.ssid.data.data,
 377                         request->ssids->ssid, request->ssids->ssid_len);
 378         } else {
 379                 msg1.scantype.data = 0;
 380         }
 381         msg1.probedelay.data = 0;
 382
 383         for (i = 0;
 384                 (i < request->n_channels) && i < ARRAY_SIZE(prism2_channels);
 385                 i++)
 386                 msg1.channellist.data.data[i] =
 387                         ieee80211_frequency_to_channel(
 388                                 request->channels[i]->center_freq);
 389         msg1.channellist.data.len = request->n_channels;
 390
 391         msg1.maxchanneltime.data = 250;
 392         msg1.minchanneltime.data = 200;
 393
 394         result = p80211req_dorequest(wlandev, (u8 *) &msg1);
 395         if (result) {
 396                 err = prism2_result2err(msg1.resultcode.data);
 397                 goto exit;
 398         }
 399         /* Now retrieve scan results */
 400         numbss = msg1.numbss.data;
 401
 402         for (i = 0; i < numbss; i++) {
 403                 memset(&msg2, 0, sizeof(msg2));
 404                 msg2.msgcode = DIDmsg_dot11req_scan_results;
 405                 msg2.bssindex.data = i;
 406
 407                 result = p80211req_dorequest(wlandev, (u8 *) &msg2);
 408                 if ((result != 0) ||
 409                     (msg2.resultcode.data != P80211ENUM_resultcode_success)) {
 410                         break;
 411                 }
 412
 413                 ie_buf[0] = WLAN_EID_SSID;
 414                 ie_buf[1] = msg2.ssid.data.len;
 415                 ie_len = ie_buf[1] + 2;
 416                 memcpy(&ie_buf[2], &(msg2.ssid.data.data), msg2.ssid.data.len);
 417                 bss = cfg80211_inform_bss(wiphy,
 418                         ieee80211_get_channel(wiphy,
 419                               ieee80211_dsss_chan_to_freq(msg2.dschannel.data)),
 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
 621         /* Do a join, with a bogus ssid. Thats the only way I can think of */
 622         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 623
 624         memcpy(msg_join.ssid.data.data, "---", 3);
 625         msg_join.ssid.data.len = 3;
 626
 627         result = p80211req_dorequest(wlandev, (u8 *) &msg_join);
 628
 629         if (result)
 630                 err = -EFAULT;
 631
 632         return err;
 633 }
 634
 635
 636 static int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 637                             struct cfg80211_ibss_params *params)
 638 {
 639         return -EOPNOTSUPP;
 640 }
 641
 642 static int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 643 {
 644         return -EOPNOTSUPP;
 645 }
 646
 647
 648 static int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 649                                enum nl80211_tx_power_setting type, int mbm)
 650 {
 651         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 652         wlandevice_t *wlandev = priv->wlandev;
 653         u32 data;
 654         int result;
 655         int err = 0;
 656
 657         if (type == NL80211_TX_POWER_AUTOMATIC)
 658                 data = 30;
 659         else
 660                 data = MBM_TO_DBM(mbm);
 661
 662         result = prism2_domibset_uint32(wlandev,
 663                 DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel,
 664                 data);
 665
 666         if (result) {
 667                 err = -EFAULT;
 668                 goto exit;
 669         }
 670
 671 exit:
 672         return err;
 673 }
 674
 675 static int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 676                                int *dbm)
 677 {
 678         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 679         wlandevice_t *wlandev = priv->wlandev;
 680         struct p80211msg_dot11req_mibget msg;
 681         p80211item_uint32_t *mibitem;
 682         int result;
 683         int err = 0;
 684
 685         mibitem = (p80211item_uint32_t *) &msg.mibattribute.data;
 686         msg.msgcode = DIDmsg_dot11req_mibget;
 687         mibitem->did =
 688             DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel;
 689
 690         result = p80211req_dorequest(wlandev, (u8 *) &msg);
 691
 692         if (result) {
 693                 err = -EFAULT;
 694                 goto exit;
 695         }
 696
 697         *dbm = mibitem->data;
 698
 699 exit:
 700         return err;
 701 }
 702
 703
 704
 705
 706 /* Interface callback functions, passing data back up to the cfg80211 layer */
 707 void prism2_connect_result(wlandevice_t *wlandev, u8 failed)
 708 {
 709         u16 status = failed ?
 710                      WLAN_STATUS_UNSPECIFIED_FAILURE : WLAN_STATUS_SUCCESS;
 711
 712         cfg80211_connect_result(wlandev->netdev, wlandev->bssid,
 713                                 NULL, 0, NULL, 0, status, GFP_KERNEL);
 714 }
 715
 716 void prism2_disconnected(wlandevice_t *wlandev)
 717 {
 718         cfg80211_disconnected(wlandev->netdev, 0, NULL,
 719                 0, GFP_KERNEL);
 720 }
 721
 722 void prism2_roamed(wlandevice_t *wlandev)
 723 {
 724         cfg80211_roamed(wlandev->netdev, NULL, wlandev->bssid,
 725                 NULL, 0, NULL, 0, GFP_KERNEL);
 726 }
 727
 728
 729 /* Structures for declaring wiphy interface */
 730 static const struct cfg80211_ops prism2_usb_cfg_ops = {
 731         .change_virtual_intf = prism2_change_virtual_intf,
 732         .add_key = prism2_add_key,
 733         .get_key = prism2_get_key,
 734         .del_key = prism2_del_key,
 735         .set_default_key = prism2_set_default_key,
 736         .get_station = prism2_get_station,
 737         .scan = prism2_scan,
 738         .set_wiphy_params = prism2_set_wiphy_params,
 739         .connect = prism2_connect,
 740         .disconnect = prism2_disconnect,
 741         .join_ibss = prism2_join_ibss,
 742         .leave_ibss = prism2_leave_ibss,
 743         .set_tx_power = prism2_set_tx_power,
 744         .get_tx_power = prism2_get_tx_power,
 745 };
 746
 747
 748 /* Functions to create/free wiphy interface */
 749 struct wiphy *wlan_create_wiphy(struct device *dev, wlandevice_t *wlandev)
 750 {
 751         struct wiphy *wiphy;
 752         struct prism2_wiphy_private *priv;
 753
 754         wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
 755         if (!wiphy)
 756                 return NULL;
 757
 758         priv = wiphy_priv(wiphy);
 759         priv->wlandev = wlandev;
 760         memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
 761         memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
 762         priv->band.channels = priv->channels;
 763         priv->band.n_channels = ARRAY_SIZE(prism2_channels);
 764         priv->band.bitrates = priv->rates;
 765         priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
 766         priv->band.band = IEEE80211_BAND_2GHZ;
 767         priv->band.ht_cap.ht_supported = false;
 768         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 769
 770         set_wiphy_dev(wiphy, dev);
 771         wiphy->privid = prism2_wiphy_privid;
 772         wiphy->max_scan_ssids = 1;
 773         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
 774                                  | BIT(NL80211_IFTYPE_ADHOC);
 775         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 776         wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
 777         wiphy->cipher_suites = prism2_cipher_suites;
 778
 779         if (wiphy_register(wiphy) < 0)
 780                 return NULL;
 781
 782         return wiphy;
 783 }
 784
 785
 786 void wlan_free_wiphy(struct wiphy *wiphy)
 787 {
 788         wiphy_unregister(wiphy);
 789         wiphy_free(wiphy);
 790 }