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          */
 244
 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 static int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
 300                               const u8 *mac, struct station_info *sinfo)
 301 {
 302         wlandevice_t *wlandev = dev->ml_priv;
 303         struct p80211msg_lnxreq_commsquality quality;
 304         int result;
 305
 306         memset(sinfo, 0, sizeof(*sinfo));
 307
 308         if ((wlandev == NULL) || (wlandev->msdstate != WLAN_MSD_RUNNING))
 309                 return -EOPNOTSUPP;
 310
 311         /* build request message */
 312         quality.msgcode = DIDmsg_lnxreq_commsquality;
 313         quality.dbm.data = P80211ENUM_truth_true;
 314         quality.dbm.status = P80211ENUM_msgitem_status_data_ok;
 315
 316         /* send message to nsd */
 317         if (wlandev->mlmerequest == NULL)
 318                 return -EOPNOTSUPP;
 319
 320         result = wlandev->mlmerequest(wlandev, (struct p80211msg *)&quality);
 321
 322         if (result == 0) {
 323                 sinfo->txrate.legacy = quality.txrate.data;
 324                 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
 325                 sinfo->signal = quality.level.data;
 326                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
 327         }
 328
 329         return result;
 330 }
 331
 332 static int prism2_scan(struct wiphy *wiphy,
 333                        struct cfg80211_scan_request *request)
 334 {
 335         struct net_device *dev;
 336         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 337         wlandevice_t *wlandev;
 338         struct p80211msg_dot11req_scan msg1;
 339         struct p80211msg_dot11req_scan_results msg2;
 340         struct cfg80211_bss *bss;
 341         struct cfg80211_scan_info info = {};
 342
 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                 int freq;
 404
 405                 memset(&msg2, 0, sizeof(msg2));
 406                 msg2.msgcode = DIDmsg_dot11req_scan_results;
 407                 msg2.bssindex.data = i;
 408
 409                 result = p80211req_dorequest(wlandev, (u8 *)&msg2);
 410                 if ((result != 0) ||
 411                     (msg2.resultcode.data != P80211ENUM_resultcode_success)) {
 412                         break;
 413                 }
 414
 415                 ie_buf[0] = WLAN_EID_SSID;
 416                 ie_buf[1] = msg2.ssid.data.len;
 417                 ie_len = ie_buf[1] + 2;
 418                 memcpy(&ie_buf[2], &(msg2.ssid.data.data), msg2.ssid.data.len);
 419                 freq = ieee80211_channel_to_frequency(msg2.dschannel.data,
 420                                                       NL80211_BAND_2GHZ);
 421                 bss = cfg80211_inform_bss(wiphy,
 422                         ieee80211_get_channel(wiphy, freq),
 423                         CFG80211_BSS_FTYPE_UNKNOWN,
 424                         (const u8 *)&(msg2.bssid.data.data),
 425                         msg2.timestamp.data, msg2.capinfo.data,
 426                         msg2.beaconperiod.data,
 427                         ie_buf,
 428                         ie_len,
 429                         (msg2.signal.data - 65536) * 100, /* Conversion to signed type */
 430                         GFP_KERNEL
 431                 );
 432
 433                 if (!bss) {
 434                         err = -ENOMEM;
 435                         goto exit;
 436                 }
 437
 438                 cfg80211_put_bss(wiphy, bss);
 439         }
 440
 441         if (result)
 442                 err = prism2_result2err(msg2.resultcode.data);
 443
 444 exit:
 445         info.aborted = !!(err);
 446         cfg80211_scan_done(request, &info);
 447         priv->scan_request = NULL;
 448         return err;
 449 }
 450
 451 static int prism2_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 452 {
 453         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 454         wlandevice_t *wlandev = priv->wlandev;
 455         u32 data;
 456         int result;
 457         int err = 0;
 458
 459         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 460                 if (wiphy->rts_threshold == -1)
 461                         data = 2347;
 462                 else
 463                         data = wiphy->rts_threshold;
 464
 465                 result = prism2_domibset_uint32(wlandev,
 466                                                 DIDmib_dot11mac_dot11OperationTable_dot11RTSThreshold,
 467                                                 data);
 468                 if (result) {
 469                         err = -EFAULT;
 470                         goto exit;
 471                 }
 472         }
 473
 474         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 475                 if (wiphy->frag_threshold == -1)
 476                         data = 2346;
 477                 else
 478                         data = wiphy->frag_threshold;
 479
 480                 result = prism2_domibset_uint32(wlandev,
 481                                                 DIDmib_dot11mac_dot11OperationTable_dot11FragmentationThreshold,
 482                                                 data);
 483                 if (result) {
 484                         err = -EFAULT;
 485                         goto exit;
 486                 }
 487         }
 488
 489 exit:
 490         return err;
 491 }
 492
 493 static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
 494                           struct cfg80211_connect_params *sme)
 495 {
 496         wlandevice_t *wlandev = dev->ml_priv;
 497         struct ieee80211_channel *channel = sme->channel;
 498         struct p80211msg_lnxreq_autojoin msg_join;
 499         u32 did;
 500         int length = sme->ssid_len;
 501         int chan = -1;
 502         int is_wep = (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP40) ||
 503             (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP104);
 504         int result;
 505         int err = 0;
 506
 507         /* Set the channel */
 508         if (channel) {
 509                 chan = ieee80211_frequency_to_channel(channel->center_freq);
 510                 result = prism2_domibset_uint32(wlandev,
 511                                                 DIDmib_dot11phy_dot11PhyDSSSTable_dot11CurrentChannel,
 512                                                 chan);
 513                 if (result)
 514                         goto exit;
 515         }
 516
 517         /* Set the authorization */
 518         if ((sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) ||
 519                 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && !is_wep))
 520                         msg_join.authtype.data = P80211ENUM_authalg_opensystem;
 521         else if ((sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY) ||
 522                 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && is_wep))
 523                         msg_join.authtype.data = P80211ENUM_authalg_sharedkey;
 524         else
 525                 netdev_warn(dev,
 526                         "Unhandled authorisation type for connect (%d)\n",
 527                         sme->auth_type);
 528
 529         /* Set the encryption - we only support wep */
 530         if (is_wep) {
 531                 if (sme->key) {
 532                         result = prism2_domibset_uint32(wlandev,
 533                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 534                                 sme->key_idx);
 535                         if (result)
 536                                 goto exit;
 537
 538                         /* send key to driver */
 539                         switch (sme->key_idx) {
 540                         case 0:
 541                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 542                                 break;
 543
 544                         case 1:
 545                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 546                                 break;
 547
 548                         case 2:
 549                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 550                                 break;
 551
 552                         case 3:
 553                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 554                                 break;
 555
 556                         default:
 557                                 err = -EINVAL;
 558                                 goto exit;
 559                         }
 560
 561                         result = prism2_domibset_pstr32(wlandev,
 562                                                         did, sme->key_len,
 563                                                         (u8 *)sme->key);
 564                         if (result)
 565                                 goto exit;
 566                 }
 567
 568                 /* Assume we should set privacy invoked and exclude unencrypted
 569                  * We could possible use sme->privacy here, but the assumption
 570                  * seems reasonable anyways
 571                  */
 572                 result = prism2_domibset_uint32(wlandev,
 573                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 574                                                 P80211ENUM_truth_true);
 575                 if (result)
 576                         goto exit;
 577
 578                 result = prism2_domibset_uint32(wlandev,
 579                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 580                                                 P80211ENUM_truth_true);
 581                 if (result)
 582                         goto exit;
 583
 584         } else {
 585                 /* Assume we should unset privacy invoked
 586                  * and exclude unencrypted
 587                  */
 588                 result = prism2_domibset_uint32(wlandev,
 589                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 590                                                 P80211ENUM_truth_false);
 591                 if (result)
 592                         goto exit;
 593
 594                 result = prism2_domibset_uint32(wlandev,
 595                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 596                                                 P80211ENUM_truth_false);
 597                 if (result)
 598                         goto exit;
 599         }
 600
 601         /* Now do the actual join. Note there is no way that I can
 602          * see to request a specific bssid
 603          */
 604         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 605
 606         memcpy(msg_join.ssid.data.data, sme->ssid, length);
 607         msg_join.ssid.data.len = length;
 608
 609         result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
 610
 611 exit:
 612         if (result)
 613                 err = -EFAULT;
 614
 615         return err;
 616 }
 617
 618 static int prism2_disconnect(struct wiphy *wiphy, struct net_device *dev,
 619                              u16 reason_code)
 620 {
 621         wlandevice_t *wlandev = dev->ml_priv;
 622         struct p80211msg_lnxreq_autojoin msg_join;
 623         int result;
 624         int err = 0;
 625
 626         /* Do a join, with a bogus ssid. Thats the only way I can think of */
 627         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 628
 629         memcpy(msg_join.ssid.data.data, "---", 3);
 630         msg_join.ssid.data.len = 3;
 631
 632         result = p80211req_dorequest(wlandev, (u8 *)&msg_join);
 633
 634         if (result)
 635                 err = -EFAULT;
 636
 637         return err;
 638 }
 639
 640 static int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 641                             struct cfg80211_ibss_params *params)
 642 {
 643         return -EOPNOTSUPP;
 644 }
 645
 646 static int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 647 {
 648         return -EOPNOTSUPP;
 649 }
 650
 651 static int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 652                                enum nl80211_tx_power_setting type, int mbm)
 653 {
 654         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 655         wlandevice_t *wlandev = priv->wlandev;
 656         u32 data;
 657         int result;
 658         int err = 0;
 659
 660         if (type == NL80211_TX_POWER_AUTOMATIC)
 661                 data = 30;
 662         else
 663                 data = MBM_TO_DBM(mbm);
 664
 665         result = prism2_domibset_uint32(wlandev,
 666                 DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel,
 667                 data);
 668
 669         if (result) {
 670                 err = -EFAULT;
 671                 goto exit;
 672         }
 673
 674 exit:
 675         return err;
 676 }
 677
 678 static int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 679                                int *dbm)
 680 {
 681         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 682         wlandevice_t *wlandev = priv->wlandev;
 683         struct p80211msg_dot11req_mibget msg;
 684         p80211item_uint32_t *mibitem;
 685         int result;
 686         int err = 0;
 687
 688         mibitem = (p80211item_uint32_t *)&msg.mibattribute.data;
 689         msg.msgcode = DIDmsg_dot11req_mibget;
 690         mibitem->did =
 691             DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel;
 692
 693         result = p80211req_dorequest(wlandev, (u8 *)&msg);
 694
 695         if (result) {
 696                 err = -EFAULT;
 697                 goto exit;
 698         }
 699
 700         *dbm = mibitem->data;
 701
 702 exit:
 703         return err;
 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, false, 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 /* Structures for declaring wiphy interface */
 729 static const struct cfg80211_ops prism2_usb_cfg_ops = {
 730         .change_virtual_intf = prism2_change_virtual_intf,
 731         .add_key = prism2_add_key,
 732         .get_key = prism2_get_key,
 733         .del_key = prism2_del_key,
 734         .set_default_key = prism2_set_default_key,
 735         .get_station = prism2_get_station,
 736         .scan = prism2_scan,
 737         .set_wiphy_params = prism2_set_wiphy_params,
 738         .connect = prism2_connect,
 739         .disconnect = prism2_disconnect,
 740         .join_ibss = prism2_join_ibss,
 741         .leave_ibss = prism2_leave_ibss,
 742         .set_tx_power = prism2_set_tx_power,
 743         .get_tx_power = prism2_get_tx_power,
 744 };
 745
 746 /* Functions to create/free wiphy interface */
 747 static struct wiphy *wlan_create_wiphy(struct device *dev, wlandevice_t *wlandev)
 748 {
 749         struct wiphy *wiphy;
 750         struct prism2_wiphy_private *priv;
 751
 752         wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
 753         if (!wiphy)
 754                 return NULL;
 755
 756         priv = wiphy_priv(wiphy);
 757         priv->wlandev = wlandev;
 758         memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
 759         memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
 760         priv->band.channels = priv->channels;
 761         priv->band.n_channels = ARRAY_SIZE(prism2_channels);
 762         priv->band.bitrates = priv->rates;
 763         priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
 764         priv->band.band = NL80211_BAND_2GHZ;
 765         priv->band.ht_cap.ht_supported = false;
 766         wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
 767
 768         set_wiphy_dev(wiphy, dev);
 769         wiphy->privid = prism2_wiphy_privid;
 770         wiphy->max_scan_ssids = 1;
 771         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
 772                                  | BIT(NL80211_IFTYPE_ADHOC);
 773         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 774         wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
 775         wiphy->cipher_suites = prism2_cipher_suites;
 776
 777         if (wiphy_register(wiphy) < 0) {
 778                 wiphy_free(wiphy);
 779                 return NULL;
 780         }
 781
 782         return wiphy;
 783 }
 784
 785 static void wlan_free_wiphy(struct wiphy *wiphy)
 786 {
 787         wiphy_unregister(wiphy);
 788         wiphy_free(wiphy);
 789 }