drivers/net/wireless/libertas/cfg.c

   1 /*
   2  * Implement cfg80211 ("iw") support.
   3  *
   4  * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
   5  * Holger Schurig <hs4233@mail.mn-solutions.de>
   6  *
   7  */
   8
   9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  10
  11 #include <linux/hardirq.h>
  12 #include <linux/sched.h>
  13 #include <linux/wait.h>
  14 #include <linux/slab.h>
  15 #include <linux/ieee80211.h>
  16 #include <net/cfg80211.h>
  17 #include <asm/unaligned.h>
  18
  19 #include "decl.h"
  20 #include "cfg.h"
  21 #include "cmd.h"
  22
  23
  24 #define CHAN2G(_channel, _freq, _flags) {        \
  25         .band             = IEEE80211_BAND_2GHZ, \
  26         .center_freq      = (_freq),             \
  27         .hw_value         = (_channel),          \
  28         .flags            = (_flags),            \
  29         .max_antenna_gain = 0,                   \
  30         .max_power        = 30,                  \
  31 }
  32
  33 static struct ieee80211_channel lbs_2ghz_channels[] = {
  34         CHAN2G(1,  2412, 0),
  35         CHAN2G(2,  2417, 0),
  36         CHAN2G(3,  2422, 0),
  37         CHAN2G(4,  2427, 0),
  38         CHAN2G(5,  2432, 0),
  39         CHAN2G(6,  2437, 0),
  40         CHAN2G(7,  2442, 0),
  41         CHAN2G(8,  2447, 0),
  42         CHAN2G(9,  2452, 0),
  43         CHAN2G(10, 2457, 0),
  44         CHAN2G(11, 2462, 0),
  45         CHAN2G(12, 2467, 0),
  46         CHAN2G(13, 2472, 0),
  47         CHAN2G(14, 2484, 0),
  48 };
  49
  50 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  51         .bitrate  = (_rate),                    \
  52         .hw_value = (_hw_value),                \
  53         .flags    = (_flags),                   \
  54 }
  55
  56
  57 /* Table 6 in section 3.2.1.1 */
  58 static struct ieee80211_rate lbs_rates[] = {
  59         RATETAB_ENT(10,  0,  0),
  60         RATETAB_ENT(20,  1,  0),
  61         RATETAB_ENT(55,  2,  0),
  62         RATETAB_ENT(110, 3,  0),
  63         RATETAB_ENT(60,  9,  0),
  64         RATETAB_ENT(90,  6,  0),
  65         RATETAB_ENT(120, 7,  0),
  66         RATETAB_ENT(180, 8,  0),
  67         RATETAB_ENT(240, 9,  0),
  68         RATETAB_ENT(360, 10, 0),
  69         RATETAB_ENT(480, 11, 0),
  70         RATETAB_ENT(540, 12, 0),
  71 };
  72
  73 static struct ieee80211_supported_band lbs_band_2ghz = {
  74         .channels = lbs_2ghz_channels,
  75         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  76         .bitrates = lbs_rates,
  77         .n_bitrates = ARRAY_SIZE(lbs_rates),
  78 };
  79
  80
  81 static const u32 cipher_suites[] = {
  82         WLAN_CIPHER_SUITE_WEP40,
  83         WLAN_CIPHER_SUITE_WEP104,
  84         WLAN_CIPHER_SUITE_TKIP,
  85         WLAN_CIPHER_SUITE_CCMP,
  86 };
  87
  88 /* Time to stay on the channel */
  89 #define LBS_DWELL_PASSIVE 100
  90 #define LBS_DWELL_ACTIVE  40
  91
  92
  93 /***************************************************************************
  94  * Misc utility functions
  95  *
  96  * TLVs are Marvell specific. They are very similar to IEs, they have the
  97  * same structure: type, length, data*. The only difference: for IEs, the
  98  * type and length are u8, but for TLVs they're __le16.
  99  */
 100
 101 /*
 102  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
 103  * in the firmware spec
 104  */
 105 static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 106 {
 107         int ret = -ENOTSUPP;
 108
 109         switch (auth_type) {
 110         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 111         case NL80211_AUTHTYPE_SHARED_KEY:
 112                 ret = auth_type;
 113                 break;
 114         case NL80211_AUTHTYPE_AUTOMATIC:
 115                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 116                 break;
 117         case NL80211_AUTHTYPE_NETWORK_EAP:
 118                 ret = 0x80;
 119                 break;
 120         default:
 121                 /* silence compiler */
 122                 break;
 123         }
 124         return ret;
 125 }
 126
 127
 128 /*
 129  * Various firmware commands need the list of supported rates, but with
 130  * the hight-bit set for basic rates
 131  */
 132 static int lbs_add_rates(u8 *rates)
 133 {
 134         size_t i;
 135
 136         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 137                 u8 rate = lbs_rates[i].bitrate / 5;
 138                 if (rate == 0x02 || rate == 0x04 ||
 139                     rate == 0x0b || rate == 0x16)
 140                         rate |= 0x80;
 141                 rates[i] = rate;
 142         }
 143         return ARRAY_SIZE(lbs_rates);
 144 }
 145
 146
 147 /***************************************************************************
 148  * TLV utility functions
 149  *
 150  * TLVs are Marvell specific. They are very similar to IEs, they have the
 151  * same structure: type, length, data*. The only difference: for IEs, the
 152  * type and length are u8, but for TLVs they're __le16.
 153  */
 154
 155
 156 /*
 157  * Add ssid TLV
 158  */
 159 #define LBS_MAX_SSID_TLV_SIZE                   \
 160         (sizeof(struct mrvl_ie_header)          \
 161          + IEEE80211_MAX_SSID_LEN)
 162
 163 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 164 {
 165         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 166
 167         /*
 168          * TLV-ID SSID  00 00
 169          * length       06 00
 170          * ssid         4d 4e 54 45 53 54
 171          */
 172         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 173         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 174         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 175         return sizeof(ssid_tlv->header) + ssid_len;
 176 }
 177
 178
 179 /*
 180  * Add channel list TLV (section 8.4.2)
 181  *
 182  * Actual channel data comes from priv->wdev->wiphy->channels.
 183  */
 184 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 185         (sizeof(struct mrvl_ie_header)                                  \
 186          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 187
 188 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 189                                     int last_channel, int active_scan)
 190 {
 191         int chanscanparamsize = sizeof(struct chanscanparamset) *
 192                 (last_channel - priv->scan_channel);
 193
 194         struct mrvl_ie_header *header = (void *) tlv;
 195
 196         /*
 197          * TLV-ID CHANLIST  01 01
 198          * length           0e 00
 199          * channel          00 01 00 00 00 64 00
 200          *   radio type     00
 201          *   channel           01
 202          *   scan type            00
 203          *   min scan time           00 00
 204          *   max scan time                 64 00
 205          * channel 2        00 02 00 00 00 64 00
 206          *
 207          */
 208
 209         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 210         header->len  = cpu_to_le16(chanscanparamsize);
 211         tlv += sizeof(struct mrvl_ie_header);
 212
 213         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 214                      last_channel); */
 215         memset(tlv, 0, chanscanparamsize);
 216
 217         while (priv->scan_channel < last_channel) {
 218                 struct chanscanparamset *param = (void *) tlv;
 219
 220                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 221                 param->channumber =
 222                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 223                 if (active_scan) {
 224                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 225                 } else {
 226                         param->chanscanmode.passivescan = 1;
 227                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 228                 }
 229                 tlv += sizeof(struct chanscanparamset);
 230                 priv->scan_channel++;
 231         }
 232         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 233 }
 234
 235
 236 /*
 237  * Add rates TLV
 238  *
 239  * The rates are in lbs_bg_rates[], but for the 802.11b
 240  * rates the high bit is set. We add this TLV only because
 241  * there's a firmware which otherwise doesn't report all
 242  * APs in range.
 243  */
 244 #define LBS_MAX_RATES_TLV_SIZE                  \
 245         (sizeof(struct mrvl_ie_header)          \
 246          + (ARRAY_SIZE(lbs_rates)))
 247
 248 /* Adds a TLV with all rates the hardware supports */
 249 static int lbs_add_supported_rates_tlv(u8 *tlv)
 250 {
 251         size_t i;
 252         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 253
 254         /*
 255          * TLV-ID RATES  01 00
 256          * length        0e 00
 257          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 258          */
 259         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 260         tlv += sizeof(rate_tlv->header);
 261         i = lbs_add_rates(tlv);
 262         tlv += i;
 263         rate_tlv->header.len = cpu_to_le16(i);
 264         return sizeof(rate_tlv->header) + i;
 265 }
 266
 267 /* Add common rates from a TLV and return the new end of the TLV */
 268 static u8 *
 269 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 270 {
 271         int hw, ap, ap_max = ie[1];
 272         u8 hw_rate;
 273
 274         /* Advance past IE header */
 275         ie += 2;
 276
 277         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 278
 279         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 280                 hw_rate = lbs_rates[hw].bitrate / 5;
 281                 for (ap = 0; ap < ap_max; ap++) {
 282                         if (hw_rate == (ie[ap] & 0x7f)) {
 283                                 *tlv++ = ie[ap];
 284                                 *nrates = *nrates + 1;
 285                         }
 286                 }
 287         }
 288         return tlv;
 289 }
 290
 291 /*
 292  * Adds a TLV with all rates the hardware *and* BSS supports.
 293  */
 294 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 295 {
 296         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 297         const u8 *rates_eid, *ext_rates_eid;
 298         int n = 0;
 299
 300         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 301         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 302
 303         /*
 304          * 01 00                   TLV_TYPE_RATES
 305          * 04 00                   len
 306          * 82 84 8b 96             rates
 307          */
 308         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 309         tlv += sizeof(rate_tlv->header);
 310
 311         /* Add basic rates */
 312         if (rates_eid) {
 313                 tlv = add_ie_rates(tlv, rates_eid, &n);
 314
 315                 /* Add extended rates, if any */
 316                 if (ext_rates_eid)
 317                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 318         } else {
 319                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 320                 /* Fallback: add basic 802.11b rates */
 321                 *tlv++ = 0x82;
 322                 *tlv++ = 0x84;
 323                 *tlv++ = 0x8b;
 324                 *tlv++ = 0x96;
 325                 n = 4;
 326         }
 327
 328         rate_tlv->header.len = cpu_to_le16(n);
 329         return sizeof(rate_tlv->header) + n;
 330 }
 331
 332
 333 /*
 334  * Add auth type TLV.
 335  *
 336  * This is only needed for newer firmware (V9 and up).
 337  */
 338 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 339         sizeof(struct mrvl_ie_auth_type)
 340
 341 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 342 {
 343         struct mrvl_ie_auth_type *auth = (void *) tlv;
 344
 345         /*
 346          * 1f 01  TLV_TYPE_AUTH_TYPE
 347          * 01 00  len
 348          * 01     auth type
 349          */
 350         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 351         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 352         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 353         return sizeof(*auth);
 354 }
 355
 356
 357 /*
 358  * Add channel (phy ds) TLV
 359  */
 360 #define LBS_MAX_CHANNEL_TLV_SIZE \
 361         sizeof(struct mrvl_ie_header)
 362
 363 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 364 {
 365         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 366
 367         /*
 368          * 03 00  TLV_TYPE_PHY_DS
 369          * 01 00  len
 370          * 06     channel
 371          */
 372         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 373         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 374         ds->channel = channel;
 375         return sizeof(*ds);
 376 }
 377
 378
 379 /*
 380  * Add (empty) CF param TLV of the form:
 381  */
 382 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 383         sizeof(struct mrvl_ie_header)
 384
 385 static int lbs_add_cf_param_tlv(u8 *tlv)
 386 {
 387         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 388
 389         /*
 390          * 04 00  TLV_TYPE_CF
 391          * 06 00  len
 392          * 00     cfpcnt
 393          * 00     cfpperiod
 394          * 00 00  cfpmaxduration
 395          * 00 00  cfpdurationremaining
 396          */
 397         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 398         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 399         return sizeof(*cf);
 400 }
 401
 402 /*
 403  * Add WPA TLV
 404  */
 405 #define LBS_MAX_WPA_TLV_SIZE                    \
 406         (sizeof(struct mrvl_ie_header)          \
 407          + 128 /* TODO: I guessed the size */)
 408
 409 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 410 {
 411         size_t tlv_len;
 412
 413         /*
 414          * We need just convert an IE to an TLV. IEs use u8 for the header,
 415          *   u8      type
 416          *   u8      len
 417          *   u8[]    data
 418          * but TLVs use __le16 instead:
 419          *   __le16  type
 420          *   __le16  len
 421          *   u8[]    data
 422          */
 423         *tlv++ = *ie++;
 424         *tlv++ = 0;
 425         tlv_len = *tlv++ = *ie++;
 426         *tlv++ = 0;
 427         while (tlv_len--)
 428                 *tlv++ = *ie++;
 429         /* the TLV is two bytes larger than the IE */
 430         return ie_len + 2;
 431 }
 432
 433 /*
 434  * Set Channel
 435  */
 436
 437 static int lbs_cfg_set_channel(struct wiphy *wiphy,
 438         struct net_device *netdev,
 439         struct ieee80211_channel *channel,
 440         enum nl80211_channel_type channel_type)
 441 {
 442         struct lbs_private *priv = wiphy_priv(wiphy);
 443         int ret = -ENOTSUPP;
 444
 445         lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
 446                            channel->center_freq, channel_type);
 447
 448         if (channel_type != NL80211_CHAN_NO_HT)
 449                 goto out;
 450
 451         ret = lbs_set_channel(priv, channel->hw_value);
 452
 453  out:
 454         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 455         return ret;
 456 }
 457
 458
 459
 460 /*
 461  * Scanning
 462  */
 463
 464 /*
 465  * When scanning, the firmware doesn't send a nul packet with the power-safe
 466  * bit to the AP. So we cannot stay away from our current channel too long,
 467  * otherwise we loose data. So take a "nap" while scanning every other
 468  * while.
 469  */
 470 #define LBS_SCAN_BEFORE_NAP 4
 471
 472
 473 /*
 474  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 475  * which isn't really an RSSI, as it becomes larger when moving away from
 476  * the AP. Anyway, we need to convert that into mBm.
 477  */
 478 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 479         ((-(int)rssi + 3)*100)
 480
 481 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 482         struct cmd_header *resp)
 483 {
 484         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 485         int bsssize;
 486         const u8 *pos;
 487         const u8 *tsfdesc;
 488         int tsfsize;
 489         int i;
 490         int ret = -EILSEQ;
 491
 492         lbs_deb_enter(LBS_DEB_CFG80211);
 493
 494         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 495
 496         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 497                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 498
 499         if (scanresp->nr_sets == 0) {
 500                 ret = 0;
 501                 goto done;
 502         }
 503
 504         /*
 505          * The general layout of the scan response is described in chapter
 506          * 5.7.1. Basically we have a common part, then any number of BSS
 507          * descriptor sections. Finally we have section with the same number
 508          * of TSFs.
 509          *
 510          * cmd_ds_802_11_scan_rsp
 511          *   cmd_header
 512          *   pos_size
 513          *   nr_sets
 514          *   bssdesc 1
 515          *     bssid
 516          *     rssi
 517          *     timestamp
 518          *     intvl
 519          *     capa
 520          *     IEs
 521          *   bssdesc 2
 522          *   bssdesc n
 523          *   MrvlIEtypes_TsfFimestamp_t
 524          *     TSF for BSS 1
 525          *     TSF for BSS 2
 526          *     TSF for BSS n
 527          */
 528
 529         pos = scanresp->bssdesc_and_tlvbuffer;
 530
 531         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 532                         scanresp->bssdescriptsize);
 533
 534         tsfdesc = pos + bsssize;
 535         tsfsize = 4 + 8 * scanresp->nr_sets;
 536         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 537
 538         /* Validity check: we expect a Marvell-Local TLV */
 539         i = get_unaligned_le16(tsfdesc);
 540         tsfdesc += 2;
 541         if (i != TLV_TYPE_TSFTIMESTAMP) {
 542                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 543                 goto done;
 544         }
 545
 546         /*
 547          * Validity check: the TLV holds TSF values with 8 bytes each, so
 548          * the size in the TLV must match the nr_sets value
 549          */
 550         i = get_unaligned_le16(tsfdesc);
 551         tsfdesc += 2;
 552         if (i / 8 != scanresp->nr_sets) {
 553                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 554                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 555                              i / 8);
 556                 goto done;
 557         }
 558
 559         for (i = 0; i < scanresp->nr_sets; i++) {
 560                 const u8 *bssid;
 561                 const u8 *ie;
 562                 int left;
 563                 int ielen;
 564                 int rssi;
 565                 u16 intvl;
 566                 u16 capa;
 567                 int chan_no = -1;
 568                 const u8 *ssid = NULL;
 569                 u8 ssid_len = 0;
 570                 DECLARE_SSID_BUF(ssid_buf);
 571
 572                 int len = get_unaligned_le16(pos);
 573                 pos += 2;
 574
 575                 /* BSSID */
 576                 bssid = pos;
 577                 pos += ETH_ALEN;
 578                 /* RSSI */
 579                 rssi = *pos++;
 580                 /* Packet time stamp */
 581                 pos += 8;
 582                 /* Beacon interval */
 583                 intvl = get_unaligned_le16(pos);
 584                 pos += 2;
 585                 /* Capabilities */
 586                 capa = get_unaligned_le16(pos);
 587                 pos += 2;
 588
 589                 /* To find out the channel, we must parse the IEs */
 590                 ie = pos;
 591                 /*
 592                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 593                  * interval, capabilities
 594                  */
 595                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 596                 while (left >= 2) {
 597                         u8 id, elen;
 598                         id = *pos++;
 599                         elen = *pos++;
 600                         left -= 2;
 601                         if (elen > left || elen == 0) {
 602                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 603                                 goto done;
 604                         }
 605
 606                         if (id == WLAN_EID_DS_PARAMS)
 607                                 chan_no = *pos;
 608                         if (id == WLAN_EID_SSID) {
 609                                 ssid = pos;
 610                                 ssid_len = elen;
 611                         }
 612                         left -= elen;
 613                         pos += elen;
 614                 }
 615
 616                 /* No channel, no luck */
 617                 if (chan_no != -1) {
 618                         struct wiphy *wiphy = priv->wdev->wiphy;
 619                         int freq = ieee80211_channel_to_frequency(chan_no,
 620                                                         IEEE80211_BAND_2GHZ);
 621                         struct ieee80211_channel *channel =
 622                                 ieee80211_get_channel(wiphy, freq);
 623
 624                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 625                                      "%d dBm\n",
 626                                      bssid, capa, chan_no,
 627                                      print_ssid(ssid_buf, ssid, ssid_len),
 628                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 629
 630                         if (channel &&
 631                             !(channel->flags & IEEE80211_CHAN_DISABLED))
 632                                 cfg80211_inform_bss(wiphy, channel,
 633                                         bssid, le64_to_cpu(*(__le64 *)tsfdesc),
 634                                         capa, intvl, ie, ielen,
 635                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 636                                         GFP_KERNEL);
 637                 } else
 638                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 639
 640                 tsfdesc += 8;
 641         }
 642         ret = 0;
 643
 644  done:
 645         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 646         return ret;
 647 }
 648
 649
 650 /*
 651  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 652  * TLV and a rates TLV. Determine the maximum size of them:
 653  */
 654 #define LBS_SCAN_MAX_CMD_SIZE                   \
 655         (sizeof(struct cmd_ds_802_11_scan)      \
 656          + LBS_MAX_SSID_TLV_SIZE                \
 657          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 658          + LBS_MAX_RATES_TLV_SIZE)
 659
 660 /*
 661  * Assumes priv->scan_req is initialized and valid
 662  * Assumes priv->scan_channel is initialized
 663  */
 664 static void lbs_scan_worker(struct work_struct *work)
 665 {
 666         struct lbs_private *priv =
 667                 container_of(work, struct lbs_private, scan_work.work);
 668         struct cmd_ds_802_11_scan *scan_cmd;
 669         u8 *tlv; /* pointer into our current, growing TLV storage area */
 670         int last_channel;
 671         int running, carrier;
 672
 673         lbs_deb_enter(LBS_DEB_SCAN);
 674
 675         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 676         if (scan_cmd == NULL)
 677                 goto out_no_scan_cmd;
 678
 679         /* prepare fixed part of scan command */
 680         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 681
 682         /* stop network while we're away from our main channel */
 683         running = !netif_queue_stopped(priv->dev);
 684         carrier = netif_carrier_ok(priv->dev);
 685         if (running)
 686                 netif_stop_queue(priv->dev);
 687         if (carrier)
 688                 netif_carrier_off(priv->dev);
 689
 690         /* prepare fixed part of scan command */
 691         tlv = scan_cmd->tlvbuffer;
 692
 693         /* add SSID TLV */
 694         if (priv->scan_req->n_ssids)
 695                 tlv += lbs_add_ssid_tlv(tlv,
 696                                         priv->scan_req->ssids[0].ssid,
 697                                         priv->scan_req->ssids[0].ssid_len);
 698
 699         /* add channel TLVs */
 700         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 701         if (last_channel > priv->scan_req->n_channels)
 702                 last_channel = priv->scan_req->n_channels;
 703         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 704                 priv->scan_req->n_ssids);
 705
 706         /* add rates TLV */
 707         tlv += lbs_add_supported_rates_tlv(tlv);
 708
 709         if (priv->scan_channel < priv->scan_req->n_channels) {
 710                 cancel_delayed_work(&priv->scan_work);
 711                 if (!priv->stopping)
 712                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 713                                 msecs_to_jiffies(300));
 714         }
 715
 716         /* This is the final data we are about to send */
 717         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 718         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 719                     sizeof(*scan_cmd));
 720         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 721                     tlv - scan_cmd->tlvbuffer);
 722
 723         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 724                 le16_to_cpu(scan_cmd->hdr.size),
 725                 lbs_ret_scan, 0);
 726
 727         if (priv->scan_channel >= priv->scan_req->n_channels) {
 728                 /* Mark scan done */
 729                 if (priv->internal_scan)
 730                         kfree(priv->scan_req);
 731                 else
 732                         cfg80211_scan_done(priv->scan_req, false);
 733
 734                 priv->scan_req = NULL;
 735                 priv->last_scan = jiffies;
 736         }
 737
 738         /* Restart network */
 739         if (carrier)
 740                 netif_carrier_on(priv->dev);
 741         if (running && !priv->tx_pending_len)
 742                 netif_wake_queue(priv->dev);
 743
 744         kfree(scan_cmd);
 745
 746         /* Wake up anything waiting on scan completion */
 747         if (priv->scan_req == NULL) {
 748                 lbs_deb_scan("scan: waking up waiters\n");
 749                 wake_up_all(&priv->scan_q);
 750         }
 751
 752  out_no_scan_cmd:
 753         lbs_deb_leave(LBS_DEB_SCAN);
 754 }
 755
 756 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 757         struct cfg80211_scan_request *request)
 758 {
 759         lbs_deb_enter(LBS_DEB_CFG80211);
 760
 761         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 762                 request->n_ssids, request->n_channels, request->ie_len);
 763
 764         priv->scan_channel = 0;
 765         queue_delayed_work(priv->work_thread, &priv->scan_work,
 766                 msecs_to_jiffies(50));
 767
 768         priv->scan_req = request;
 769         priv->internal_scan = internal;
 770
 771         lbs_deb_leave(LBS_DEB_CFG80211);
 772 }
 773
 774 static int lbs_cfg_scan(struct wiphy *wiphy,
 775         struct net_device *dev,
 776         struct cfg80211_scan_request *request)
 777 {
 778         struct lbs_private *priv = wiphy_priv(wiphy);
 779         int ret = 0;
 780
 781         lbs_deb_enter(LBS_DEB_CFG80211);
 782
 783         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 784                 /* old scan request not yet processed */
 785                 ret = -EAGAIN;
 786                 goto out;
 787         }
 788
 789         _internal_start_scan(priv, false, request);
 790
 791         if (priv->surpriseremoved)
 792                 ret = -EIO;
 793
 794  out:
 795         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 796         return ret;
 797 }
 798
 799
 800
 801
 802 /*
 803  * Events
 804  */
 805
 806 void lbs_send_disconnect_notification(struct lbs_private *priv)
 807 {
 808         lbs_deb_enter(LBS_DEB_CFG80211);
 809
 810         cfg80211_disconnected(priv->dev,
 811                 0,
 812                 NULL, 0,
 813                 GFP_KERNEL);
 814
 815         lbs_deb_leave(LBS_DEB_CFG80211);
 816 }
 817
 818 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 819 {
 820         lbs_deb_enter(LBS_DEB_CFG80211);
 821
 822         cfg80211_michael_mic_failure(priv->dev,
 823                 priv->assoc_bss,
 824                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 825                         NL80211_KEYTYPE_GROUP :
 826                         NL80211_KEYTYPE_PAIRWISE,
 827                 -1,
 828                 NULL,
 829                 GFP_KERNEL);
 830
 831         lbs_deb_leave(LBS_DEB_CFG80211);
 832 }
 833
 834
 835
 836
 837 /*
 838  * Connect/disconnect
 839  */
 840
 841
 842 /*
 843  * This removes all WEP keys
 844  */
 845 static int lbs_remove_wep_keys(struct lbs_private *priv)
 846 {
 847         struct cmd_ds_802_11_set_wep cmd;
 848         int ret;
 849
 850         lbs_deb_enter(LBS_DEB_CFG80211);
 851
 852         memset(&cmd, 0, sizeof(cmd));
 853         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 854         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 855         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 856
 857         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 858
 859         lbs_deb_leave(LBS_DEB_CFG80211);
 860         return ret;
 861 }
 862
 863 /*
 864  * Set WEP keys
 865  */
 866 static int lbs_set_wep_keys(struct lbs_private *priv)
 867 {
 868         struct cmd_ds_802_11_set_wep cmd;
 869         int i;
 870         int ret;
 871
 872         lbs_deb_enter(LBS_DEB_CFG80211);
 873
 874         /*
 875          * command         13 00
 876          * size            50 00
 877          * sequence        xx xx
 878          * result          00 00
 879          * action          02 00     ACT_ADD
 880          * transmit key    00 00
 881          * type for key 1  01        WEP40
 882          * type for key 2  00
 883          * type for key 3  00
 884          * type for key 4  00
 885          * key 1           39 39 39 39 39 00 00 00
 886          *                 00 00 00 00 00 00 00 00
 887          * key 2           00 00 00 00 00 00 00 00
 888          *                 00 00 00 00 00 00 00 00
 889          * key 3           00 00 00 00 00 00 00 00
 890          *                 00 00 00 00 00 00 00 00
 891          * key 4           00 00 00 00 00 00 00 00
 892          */
 893         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 894             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 895                 /* Only set wep keys if we have at least one of them */
 896                 memset(&cmd, 0, sizeof(cmd));
 897                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 898                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 899                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 900
 901                 for (i = 0; i < 4; i++) {
 902                         switch (priv->wep_key_len[i]) {
 903                         case WLAN_KEY_LEN_WEP40:
 904                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 905                                 break;
 906                         case WLAN_KEY_LEN_WEP104:
 907                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 908                                 break;
 909                         default:
 910                                 cmd.keytype[i] = 0;
 911                                 break;
 912                         }
 913                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 914                                priv->wep_key_len[i]);
 915                 }
 916
 917                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 918         } else {
 919                 /* Otherwise remove all wep keys */
 920                 ret = lbs_remove_wep_keys(priv);
 921         }
 922
 923         lbs_deb_leave(LBS_DEB_CFG80211);
 924         return ret;
 925 }
 926
 927
 928 /*
 929  * Enable/Disable RSN status
 930  */
 931 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 932 {
 933         struct cmd_ds_802_11_enable_rsn cmd;
 934         int ret;
 935
 936         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 937
 938         /*
 939          * cmd       2f 00
 940          * size      0c 00
 941          * sequence  xx xx
 942          * result    00 00
 943          * action    01 00    ACT_SET
 944          * enable    01 00
 945          */
 946         memset(&cmd, 0, sizeof(cmd));
 947         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 948         cmd.action = cpu_to_le16(CMD_ACT_SET);
 949         cmd.enable = cpu_to_le16(enable);
 950
 951         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 952
 953         lbs_deb_leave(LBS_DEB_CFG80211);
 954         return ret;
 955 }
 956
 957
 958 /*
 959  * Set WPA/WPA key material
 960  */
 961
 962 /*
 963  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 964  * get rid of WEXT, this should go into host.h
 965  */
 966
 967 struct cmd_key_material {
 968         struct cmd_header hdr;
 969
 970         __le16 action;
 971         struct MrvlIEtype_keyParamSet param;
 972 } __packed;
 973
 974 static int lbs_set_key_material(struct lbs_private *priv,
 975                                 int key_type,
 976                                 int key_info,
 977                                 u8 *key, u16 key_len)
 978 {
 979         struct cmd_key_material cmd;
 980         int ret;
 981
 982         lbs_deb_enter(LBS_DEB_CFG80211);
 983
 984         /*
 985          * Example for WPA (TKIP):
 986          *
 987          * cmd       5e 00
 988          * size      34 00
 989          * sequence  xx xx
 990          * result    00 00
 991          * action    01 00
 992          * TLV type  00 01    key param
 993          * length    00 26
 994          * key type  01 00    TKIP
 995          * key info  06 00    UNICAST | ENABLED
 996          * key len   20 00
 997          * key       32 bytes
 998          */
 999         memset(&cmd, 0, sizeof(cmd));
1000         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1001         cmd.action = cpu_to_le16(CMD_ACT_SET);
1002         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1003         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1004         cmd.param.keytypeid = cpu_to_le16(key_type);
1005         cmd.param.keyinfo = cpu_to_le16(key_info);
1006         cmd.param.keylen = cpu_to_le16(key_len);
1007         if (key && key_len)
1008                 memcpy(cmd.param.key, key, key_len);
1009
1010         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1011
1012         lbs_deb_leave(LBS_DEB_CFG80211);
1013         return ret;
1014 }
1015
1016
1017 /*
1018  * Sets the auth type (open, shared, etc) in the firmware. That
1019  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1020  * command doesn't send an authentication frame at all, it just
1021  * stores the auth_type.
1022  */
1023 static int lbs_set_authtype(struct lbs_private *priv,
1024                             struct cfg80211_connect_params *sme)
1025 {
1026         struct cmd_ds_802_11_authenticate cmd;
1027         int ret;
1028
1029         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1030
1031         /*
1032          * cmd        11 00
1033          * size       19 00
1034          * sequence   xx xx
1035          * result     00 00
1036          * BSS id     00 13 19 80 da 30
1037          * auth type  00
1038          * reserved   00 00 00 00 00 00 00 00 00 00
1039          */
1040         memset(&cmd, 0, sizeof(cmd));
1041         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1042         if (sme->bssid)
1043                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1044         /* convert auth_type */
1045         ret = lbs_auth_to_authtype(sme->auth_type);
1046         if (ret < 0)
1047                 goto done;
1048
1049         cmd.authtype = ret;
1050         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1051
1052  done:
1053         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1054         return ret;
1055 }
1056
1057
1058 /*
1059  * Create association request
1060  */
1061 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1062         (sizeof(struct cmd_ds_802_11_associate)    \
1063          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1064          + LBS_MAX_SSID_TLV_SIZE                   \
1065          + LBS_MAX_CHANNEL_TLV_SIZE                \
1066          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1067          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1068          + LBS_MAX_WPA_TLV_SIZE)
1069
1070 static int lbs_associate(struct lbs_private *priv,
1071                 struct cfg80211_bss *bss,
1072                 struct cfg80211_connect_params *sme)
1073 {
1074         struct cmd_ds_802_11_associate_response *resp;
1075         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1076                                                       GFP_KERNEL);
1077         const u8 *ssid_eid;
1078         size_t len, resp_ie_len;
1079         int status;
1080         int ret;
1081         u8 *pos = &(cmd->iebuf[0]);
1082         u8 *tmp;
1083
1084         lbs_deb_enter(LBS_DEB_CFG80211);
1085
1086         if (!cmd) {
1087                 ret = -ENOMEM;
1088                 goto done;
1089         }
1090
1091         /*
1092          * cmd              50 00
1093          * length           34 00
1094          * sequence         xx xx
1095          * result           00 00
1096          * BSS id           00 13 19 80 da 30
1097          * capabilities     11 00
1098          * listen interval  0a 00
1099          * beacon interval  00 00
1100          * DTIM period      00
1101          * TLVs             xx   (up to 512 bytes)
1102          */
1103         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1104
1105         /* Fill in static fields */
1106         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1107         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1108         cmd->capability = cpu_to_le16(bss->capability);
1109
1110         /* add SSID TLV */
1111         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1112         if (ssid_eid)
1113                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1114         else
1115                 lbs_deb_assoc("no SSID\n");
1116
1117         /* add DS param TLV */
1118         if (bss->channel)
1119                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1120         else
1121                 lbs_deb_assoc("no channel\n");
1122
1123         /* add (empty) CF param TLV */
1124         pos += lbs_add_cf_param_tlv(pos);
1125
1126         /* add rates TLV */
1127         tmp = pos + 4; /* skip Marvell IE header */
1128         pos += lbs_add_common_rates_tlv(pos, bss);
1129         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1130
1131         /* add auth type TLV */
1132         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1133                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1134
1135         /* add WPA/WPA2 TLV */
1136         if (sme->ie && sme->ie_len)
1137                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1138
1139         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1140                 (u16)(pos - (u8 *) &cmd->iebuf);
1141         cmd->hdr.size = cpu_to_le16(len);
1142
1143         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1144                         le16_to_cpu(cmd->hdr.size));
1145
1146         /* store for later use */
1147         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1148
1149         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1150         if (ret)
1151                 goto done;
1152
1153         /* generate connect message to cfg80211 */
1154
1155         resp = (void *) cmd; /* recast for easier field access */
1156         status = le16_to_cpu(resp->statuscode);
1157
1158         /* Older FW versions map the IEEE 802.11 Status Code in the association
1159          * response to the following values returned in resp->statuscode:
1160          *
1161          *    IEEE Status Code                Marvell Status Code
1162          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1163          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1164          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1165          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1166          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1167          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1168          *
1169          * Other response codes:
1170          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1171          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1172          *                                    association response from the AP)
1173          */
1174         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1175                 switch (status) {
1176                 case 0:
1177                         break;
1178                 case 1:
1179                         lbs_deb_assoc("invalid association parameters\n");
1180                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1181                         break;
1182                 case 2:
1183                         lbs_deb_assoc("timer expired while waiting for AP\n");
1184                         status = WLAN_STATUS_AUTH_TIMEOUT;
1185                         break;
1186                 case 3:
1187                         lbs_deb_assoc("association refused by AP\n");
1188                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1189                         break;
1190                 case 4:
1191                         lbs_deb_assoc("authentication refused by AP\n");
1192                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1193                         break;
1194                 default:
1195                         lbs_deb_assoc("association failure %d\n", status);
1196                         /* v5 OLPC firmware does return the AP status code if
1197                          * it's not one of the values above.  Let that through.
1198                          */
1199                         break;
1200                 }
1201         }
1202
1203         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1204                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1205                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1206
1207         resp_ie_len = le16_to_cpu(resp->hdr.size)
1208                 - sizeof(resp->hdr)
1209                 - 6;
1210         cfg80211_connect_result(priv->dev,
1211                                 priv->assoc_bss,
1212                                 sme->ie, sme->ie_len,
1213                                 resp->iebuf, resp_ie_len,
1214                                 status,
1215                                 GFP_KERNEL);
1216
1217         if (status == 0) {
1218                 /* TODO: get rid of priv->connect_status */
1219                 priv->connect_status = LBS_CONNECTED;
1220                 netif_carrier_on(priv->dev);
1221                 if (!priv->tx_pending_len)
1222                         netif_tx_wake_all_queues(priv->dev);
1223         }
1224
1225 done:
1226         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1227         return ret;
1228 }
1229
1230 static struct cfg80211_scan_request *
1231 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1232 {
1233         struct cfg80211_scan_request *creq = NULL;
1234         int i, n_channels = 0;
1235         enum ieee80211_band band;
1236
1237         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1238                 if (wiphy->bands[band])
1239                         n_channels += wiphy->bands[band]->n_channels;
1240         }
1241
1242         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1243                        n_channels * sizeof(void *),
1244                        GFP_ATOMIC);
1245         if (!creq)
1246                 return NULL;
1247
1248         /* SSIDs come after channels */
1249         creq->ssids = (void *)&creq->channels[n_channels];
1250         creq->n_channels = n_channels;
1251         creq->n_ssids = 1;
1252
1253         /* Scan all available channels */
1254         i = 0;
1255         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1256                 int j;
1257
1258                 if (!wiphy->bands[band])
1259                         continue;
1260
1261                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1262                         /* ignore disabled channels */
1263                         if (wiphy->bands[band]->channels[j].flags &
1264                                                 IEEE80211_CHAN_DISABLED)
1265                                 continue;
1266
1267                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1268                         i++;
1269                 }
1270         }
1271         if (i) {
1272                 /* Set real number of channels specified in creq->channels[] */
1273                 creq->n_channels = i;
1274
1275                 /* Scan for the SSID we're going to connect to */
1276                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1277                 creq->ssids[0].ssid_len = sme->ssid_len;
1278         } else {
1279                 /* No channels found... */
1280                 kfree(creq);
1281                 creq = NULL;
1282         }
1283
1284         return creq;
1285 }
1286
1287 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1288                            struct cfg80211_connect_params *sme)
1289 {
1290         struct lbs_private *priv = wiphy_priv(wiphy);
1291         struct cfg80211_bss *bss = NULL;
1292         int ret = 0;
1293         u8 preamble = RADIO_PREAMBLE_SHORT;
1294
1295         lbs_deb_enter(LBS_DEB_CFG80211);
1296
1297         if (!sme->bssid) {
1298                 /* Run a scan if one isn't in-progress already and if the last
1299                  * scan was done more than 2 seconds ago.
1300                  */
1301                 if (priv->scan_req == NULL &&
1302                     time_after(jiffies, priv->last_scan + (2 * HZ))) {
1303                         struct cfg80211_scan_request *creq;
1304
1305                         creq = _new_connect_scan_req(wiphy, sme);
1306                         if (!creq) {
1307                                 ret = -EINVAL;
1308                                 goto done;
1309                         }
1310
1311                         lbs_deb_assoc("assoc: scanning for compatible AP\n");
1312                         _internal_start_scan(priv, true, creq);
1313                 }
1314
1315                 /* Wait for any in-progress scan to complete */
1316                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1317                 wait_event_interruptible_timeout(priv->scan_q,
1318                                                  (priv->scan_req == NULL),
1319                                                  (15 * HZ));
1320                 lbs_deb_assoc("assoc: scanning competed\n");
1321         }
1322
1323         /* Find the BSS we want using available scan results */
1324         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1325                 sme->ssid, sme->ssid_len,
1326                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1327         if (!bss) {
1328                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1329                           sme->bssid);
1330                 ret = -ENOENT;
1331                 goto done;
1332         }
1333         lbs_deb_assoc("trying %pM\n", bss->bssid);
1334         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1335                       sme->crypto.cipher_group,
1336                       sme->key_idx, sme->key_len);
1337
1338         /* As this is a new connection, clear locally stored WEP keys */
1339         priv->wep_tx_key = 0;
1340         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1341         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1342
1343         /* set/remove WEP keys */
1344         switch (sme->crypto.cipher_group) {
1345         case WLAN_CIPHER_SUITE_WEP40:
1346         case WLAN_CIPHER_SUITE_WEP104:
1347                 /* Store provided WEP keys in priv-> */
1348                 priv->wep_tx_key = sme->key_idx;
1349                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1350                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1351                 /* Set WEP keys and WEP mode */
1352                 lbs_set_wep_keys(priv);
1353                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1354                 lbs_set_mac_control(priv);
1355                 /* No RSN mode for WEP */
1356                 lbs_enable_rsn(priv, 0);
1357                 break;
1358         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1359                 /*
1360                  * If we don't have no WEP, no WPA and no WPA2,
1361                  * we remove all keys like in the WPA/WPA2 setup,
1362                  * we just don't set RSN.
1363                  *
1364                  * Therefore: fall-through
1365                  */
1366         case WLAN_CIPHER_SUITE_TKIP:
1367         case WLAN_CIPHER_SUITE_CCMP:
1368                 /* Remove WEP keys and WEP mode */
1369                 lbs_remove_wep_keys(priv);
1370                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1371                 lbs_set_mac_control(priv);
1372
1373                 /* clear the WPA/WPA2 keys */
1374                 lbs_set_key_material(priv,
1375                         KEY_TYPE_ID_WEP, /* doesn't matter */
1376                         KEY_INFO_WPA_UNICAST,
1377                         NULL, 0);
1378                 lbs_set_key_material(priv,
1379                         KEY_TYPE_ID_WEP, /* doesn't matter */
1380                         KEY_INFO_WPA_MCAST,
1381                         NULL, 0);
1382                 /* RSN mode for WPA/WPA2 */
1383                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1384                 break;
1385         default:
1386                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1387                           sme->crypto.cipher_group);
1388                 ret = -ENOTSUPP;
1389                 goto done;
1390         }
1391
1392         lbs_set_authtype(priv, sme);
1393         lbs_set_radio(priv, preamble, 1);
1394
1395         /* Do the actual association */
1396         ret = lbs_associate(priv, bss, sme);
1397
1398  done:
1399         if (bss)
1400                 cfg80211_put_bss(bss);
1401         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1402         return ret;
1403 }
1404
1405 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1406         u16 reason_code)
1407 {
1408         struct lbs_private *priv = wiphy_priv(wiphy);
1409         struct cmd_ds_802_11_deauthenticate cmd;
1410
1411         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1412
1413         /* store for lbs_cfg_ret_disconnect() */
1414         priv->disassoc_reason = reason_code;
1415
1416         memset(&cmd, 0, sizeof(cmd));
1417         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1418         /* Mildly ugly to use a locally store my own BSSID ... */
1419         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1420         cmd.reasoncode = cpu_to_le16(reason_code);
1421
1422         if (lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd))
1423                 return -EFAULT;
1424
1425         cfg80211_disconnected(priv->dev,
1426                         priv->disassoc_reason,
1427                         NULL, 0,
1428                         GFP_KERNEL);
1429         priv->connect_status = LBS_DISCONNECTED;
1430
1431         return 0;
1432 }
1433
1434
1435 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1436                                    struct net_device *netdev,
1437                                    u8 key_index, bool unicast,
1438                                    bool multicast)
1439 {
1440         struct lbs_private *priv = wiphy_priv(wiphy);
1441
1442         lbs_deb_enter(LBS_DEB_CFG80211);
1443
1444         if (key_index != priv->wep_tx_key) {
1445                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1446                 priv->wep_tx_key = key_index;
1447                 lbs_set_wep_keys(priv);
1448         }
1449
1450         return 0;
1451 }
1452
1453
1454 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1455                            u8 idx, bool pairwise, const u8 *mac_addr,
1456                            struct key_params *params)
1457 {
1458         struct lbs_private *priv = wiphy_priv(wiphy);
1459         u16 key_info;
1460         u16 key_type;
1461         int ret = 0;
1462
1463         lbs_deb_enter(LBS_DEB_CFG80211);
1464
1465         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1466                       params->cipher, mac_addr);
1467         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1468                       idx, params->key_len);
1469         if (params->key_len)
1470                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1471                             params->key, params->key_len);
1472
1473         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1474         if (params->seq_len)
1475                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1476                             params->seq, params->seq_len);
1477
1478         switch (params->cipher) {
1479         case WLAN_CIPHER_SUITE_WEP40:
1480         case WLAN_CIPHER_SUITE_WEP104:
1481                 /* actually compare if something has changed ... */
1482                 if ((priv->wep_key_len[idx] != params->key_len) ||
1483                         memcmp(priv->wep_key[idx],
1484                                params->key, params->key_len) != 0) {
1485                         priv->wep_key_len[idx] = params->key_len;
1486                         memcpy(priv->wep_key[idx],
1487                                params->key, params->key_len);
1488                         lbs_set_wep_keys(priv);
1489                 }
1490                 break;
1491         case WLAN_CIPHER_SUITE_TKIP:
1492         case WLAN_CIPHER_SUITE_CCMP:
1493                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1494                                                    ? KEY_INFO_WPA_UNICAST
1495                                                    : KEY_INFO_WPA_MCAST);
1496                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1497                         ? KEY_TYPE_ID_TKIP
1498                         : KEY_TYPE_ID_AES;
1499                 lbs_set_key_material(priv,
1500                                      key_type,
1501                                      key_info,
1502                                      params->key, params->key_len);
1503                 break;
1504         default:
1505                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1506                 ret = -ENOTSUPP;
1507                 break;
1508         }
1509
1510         return ret;
1511 }
1512
1513
1514 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1515                            u8 key_index, bool pairwise, const u8 *mac_addr)
1516 {
1517
1518         lbs_deb_enter(LBS_DEB_CFG80211);
1519
1520         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1521                       key_index, mac_addr);
1522
1523 #ifdef TODO
1524         struct lbs_private *priv = wiphy_priv(wiphy);
1525         /*
1526          * I think can keep this a NO-OP, because:
1527
1528          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1529          * - neither "iw" nor "wpa_supplicant" won't call this during
1530          *   an ongoing connection
1531          * - TODO: but I have to check if this is still true when
1532          *   I set the AP to periodic re-keying
1533          * - we've not kzallec() something when we've added a key at
1534          *   lbs_cfg_connect() or lbs_cfg_add_key().
1535          *
1536          * This causes lbs_cfg_del_key() only called at disconnect time,
1537          * where we'd just waste time deleting a key that is not going
1538          * to be used anyway.
1539          */
1540         if (key_index < 3 && priv->wep_key_len[key_index]) {
1541                 priv->wep_key_len[key_index] = 0;
1542                 lbs_set_wep_keys(priv);
1543         }
1544 #endif
1545
1546         return 0;
1547 }
1548
1549
1550 /*
1551  * Get station
1552  */
1553
1554 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1555                               u8 *mac, struct station_info *sinfo)
1556 {
1557         struct lbs_private *priv = wiphy_priv(wiphy);
1558         s8 signal, noise;
1559         int ret;
1560         size_t i;
1561
1562         lbs_deb_enter(LBS_DEB_CFG80211);
1563
1564         sinfo->filled |= STATION_INFO_TX_BYTES |
1565                          STATION_INFO_TX_PACKETS |
1566                          STATION_INFO_RX_BYTES |
1567                          STATION_INFO_RX_PACKETS;
1568         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1569         sinfo->tx_packets = priv->dev->stats.tx_packets;
1570         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1571         sinfo->rx_packets = priv->dev->stats.rx_packets;
1572
1573         /* Get current RSSI */
1574         ret = lbs_get_rssi(priv, &signal, &noise);
1575         if (ret == 0) {
1576                 sinfo->signal = signal;
1577                 sinfo->filled |= STATION_INFO_SIGNAL;
1578         }
1579
1580         /* Convert priv->cur_rate from hw_value to NL80211 value */
1581         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1582                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1583                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1584                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1585                         break;
1586                 }
1587         }
1588
1589         return 0;
1590 }
1591
1592
1593
1594
1595 /*
1596  * "Site survey", here just current channel and noise level
1597  */
1598
1599 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1600         int idx, struct survey_info *survey)
1601 {
1602         struct lbs_private *priv = wiphy_priv(wiphy);
1603         s8 signal, noise;
1604         int ret;
1605
1606         if (idx != 0)
1607                 ret = -ENOENT;
1608
1609         lbs_deb_enter(LBS_DEB_CFG80211);
1610
1611         survey->channel = ieee80211_get_channel(wiphy,
1612                 ieee80211_channel_to_frequency(priv->channel,
1613                                                IEEE80211_BAND_2GHZ));
1614
1615         ret = lbs_get_rssi(priv, &signal, &noise);
1616         if (ret == 0) {
1617                 survey->filled = SURVEY_INFO_NOISE_DBM;
1618                 survey->noise = noise;
1619         }
1620
1621         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1622         return ret;
1623 }
1624
1625
1626
1627
1628 /*
1629  * Change interface
1630  */
1631
1632 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1633         enum nl80211_iftype type, u32 *flags,
1634                struct vif_params *params)
1635 {
1636         struct lbs_private *priv = wiphy_priv(wiphy);
1637         int ret = 0;
1638
1639         lbs_deb_enter(LBS_DEB_CFG80211);
1640
1641         switch (type) {
1642         case NL80211_IFTYPE_MONITOR:
1643                 ret = lbs_set_monitor_mode(priv, 1);
1644                 break;
1645         case NL80211_IFTYPE_STATION:
1646                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1647                         ret = lbs_set_monitor_mode(priv, 0);
1648                 if (!ret)
1649                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1650                 break;
1651         case NL80211_IFTYPE_ADHOC:
1652                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1653                         ret = lbs_set_monitor_mode(priv, 0);
1654                 if (!ret)
1655                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1656                 break;
1657         default:
1658                 ret = -ENOTSUPP;
1659         }
1660
1661         if (!ret)
1662                 priv->wdev->iftype = type;
1663
1664         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1665         return ret;
1666 }
1667
1668
1669
1670 /*
1671  * IBSS (Ad-Hoc)
1672  */
1673
1674 /*
1675  * The firmware needs the following bits masked out of the beacon-derived
1676  * capability field when associating/joining to a BSS:
1677  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1678  */
1679 #define CAPINFO_MASK (~(0xda00))
1680
1681
1682 static void lbs_join_post(struct lbs_private *priv,
1683                           struct cfg80211_ibss_params *params,
1684                           u8 *bssid, u16 capability)
1685 {
1686         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1687                    2 + 4 +                      /* basic rates */
1688                    2 + 1 +                      /* DS parameter */
1689                    2 + 2 +                      /* atim */
1690                    2 + 8];                      /* extended rates */
1691         u8 *fake = fake_ie;
1692
1693         lbs_deb_enter(LBS_DEB_CFG80211);
1694
1695         /*
1696          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1697          * the real IE from the firmware. So we fabricate a fake IE based on
1698          * what the firmware actually sends (sniffed with wireshark).
1699          */
1700         /* Fake SSID IE */
1701         *fake++ = WLAN_EID_SSID;
1702         *fake++ = params->ssid_len;
1703         memcpy(fake, params->ssid, params->ssid_len);
1704         fake += params->ssid_len;
1705         /* Fake supported basic rates IE */
1706         *fake++ = WLAN_EID_SUPP_RATES;
1707         *fake++ = 4;
1708         *fake++ = 0x82;
1709         *fake++ = 0x84;
1710         *fake++ = 0x8b;
1711         *fake++ = 0x96;
1712         /* Fake DS channel IE */
1713         *fake++ = WLAN_EID_DS_PARAMS;
1714         *fake++ = 1;
1715         *fake++ = params->channel->hw_value;
1716         /* Fake IBSS params IE */
1717         *fake++ = WLAN_EID_IBSS_PARAMS;
1718         *fake++ = 2;
1719         *fake++ = 0; /* ATIM=0 */
1720         *fake++ = 0;
1721         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1722          * but I don't know how this could be checked */
1723         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1724         *fake++ = 8;
1725         *fake++ = 0x0c;
1726         *fake++ = 0x12;
1727         *fake++ = 0x18;
1728         *fake++ = 0x24;
1729         *fake++ = 0x30;
1730         *fake++ = 0x48;
1731         *fake++ = 0x60;
1732         *fake++ = 0x6c;
1733         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1734
1735         cfg80211_inform_bss(priv->wdev->wiphy,
1736                             params->channel,
1737                             bssid,
1738                             0,
1739                             capability,
1740                             params->beacon_interval,
1741                             fake_ie, fake - fake_ie,
1742                             0, GFP_KERNEL);
1743
1744         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1745         priv->wdev->ssid_len = params->ssid_len;
1746
1747         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1748
1749         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1750         priv->connect_status = LBS_CONNECTED;
1751         netif_carrier_on(priv->dev);
1752         if (!priv->tx_pending_len)
1753                 netif_wake_queue(priv->dev);
1754
1755         lbs_deb_leave(LBS_DEB_CFG80211);
1756 }
1757
1758 static int lbs_ibss_join_existing(struct lbs_private *priv,
1759         struct cfg80211_ibss_params *params,
1760         struct cfg80211_bss *bss)
1761 {
1762         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1763         struct cmd_ds_802_11_ad_hoc_join cmd;
1764         u8 preamble = RADIO_PREAMBLE_SHORT;
1765         int ret = 0;
1766
1767         lbs_deb_enter(LBS_DEB_CFG80211);
1768
1769         /* TODO: set preamble based on scan result */
1770         ret = lbs_set_radio(priv, preamble, 1);
1771         if (ret)
1772                 goto out;
1773
1774         /*
1775          * Example CMD_802_11_AD_HOC_JOIN command:
1776          *
1777          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1778          * size            65 00
1779          * sequence        xx xx
1780          * result          00 00
1781          * bssid           02 27 27 97 2f 96
1782          * ssid            49 42 53 53 00 00 00 00
1783          *                 00 00 00 00 00 00 00 00
1784          *                 00 00 00 00 00 00 00 00
1785          *                 00 00 00 00 00 00 00 00
1786          * type            02            CMD_BSS_TYPE_IBSS
1787          * beacon period   64 00
1788          * dtim period     00
1789          * timestamp       00 00 00 00 00 00 00 00
1790          * localtime       00 00 00 00 00 00 00 00
1791          * IE DS           03
1792          * IE DS len       01
1793          * IE DS channel   01
1794          * reserveed       00 00 00 00
1795          * IE IBSS         06
1796          * IE IBSS len     02
1797          * IE IBSS atim    00 00
1798          * reserved        00 00 00 00
1799          * capability      02 00
1800          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1801          * fail timeout    ff 00
1802          * probe delay     00 00
1803          */
1804         memset(&cmd, 0, sizeof(cmd));
1805         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1806
1807         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1808         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1809         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1810         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1811         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1812         cmd.bss.ds.header.len = 1;
1813         cmd.bss.ds.channel = params->channel->hw_value;
1814         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1815         cmd.bss.ibss.header.len = 2;
1816         cmd.bss.ibss.atimwindow = 0;
1817         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1818
1819         /* set rates to the intersection of our rates and the rates in the
1820            bss */
1821         if (!rates_eid) {
1822                 lbs_add_rates(cmd.bss.rates);
1823         } else {
1824                 int hw, i;
1825                 u8 rates_max = rates_eid[1];
1826                 u8 *rates = cmd.bss.rates;
1827                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1828                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1829                         for (i = 0; i < rates_max; i++) {
1830                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1831                                         u8 rate = rates_eid[i+2];
1832                                         if (rate == 0x02 || rate == 0x04 ||
1833                                             rate == 0x0b || rate == 0x16)
1834                                                 rate |= 0x80;
1835                                         *rates++ = rate;
1836                                 }
1837                         }
1838                 }
1839         }
1840
1841         /* Only v8 and below support setting this */
1842         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1843                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1844                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1845         }
1846         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1847         if (ret)
1848                 goto out;
1849
1850         /*
1851          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1852          *
1853          * response        2c 80
1854          * size            09 00
1855          * sequence        xx xx
1856          * result          00 00
1857          * reserved        00
1858          */
1859         lbs_join_post(priv, params, bss->bssid, bss->capability);
1860
1861  out:
1862         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1863         return ret;
1864 }
1865
1866
1867
1868 static int lbs_ibss_start_new(struct lbs_private *priv,
1869         struct cfg80211_ibss_params *params)
1870 {
1871         struct cmd_ds_802_11_ad_hoc_start cmd;
1872         struct cmd_ds_802_11_ad_hoc_result *resp =
1873                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1874         u8 preamble = RADIO_PREAMBLE_SHORT;
1875         int ret = 0;
1876         u16 capability;
1877
1878         lbs_deb_enter(LBS_DEB_CFG80211);
1879
1880         ret = lbs_set_radio(priv, preamble, 1);
1881         if (ret)
1882                 goto out;
1883
1884         /*
1885          * Example CMD_802_11_AD_HOC_START command:
1886          *
1887          * command         2b 00         CMD_802_11_AD_HOC_START
1888          * size            b1 00
1889          * sequence        xx xx
1890          * result          00 00
1891          * ssid            54 45 53 54 00 00 00 00
1892          *                 00 00 00 00 00 00 00 00
1893          *                 00 00 00 00 00 00 00 00
1894          *                 00 00 00 00 00 00 00 00
1895          * bss type        02
1896          * beacon period   64 00
1897          * dtim period     00
1898          * IE IBSS         06
1899          * IE IBSS len     02
1900          * IE IBSS atim    00 00
1901          * reserved        00 00 00 00
1902          * IE DS           03
1903          * IE DS len       01
1904          * IE DS channel   01
1905          * reserved        00 00 00 00
1906          * probe delay     00 00
1907          * capability      02 00
1908          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1909          *                 0c 12 18 24 30 48 60 6c
1910          * padding         100 bytes
1911          */
1912         memset(&cmd, 0, sizeof(cmd));
1913         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1914         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1915         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1916         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1917         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1918         cmd.ibss.header.len = 2;
1919         cmd.ibss.atimwindow = 0;
1920         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1921         cmd.ds.header.len = 1;
1922         cmd.ds.channel = params->channel->hw_value;
1923         /* Only v8 and below support setting probe delay */
1924         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1925                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1926         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1927         capability = WLAN_CAPABILITY_IBSS;
1928         cmd.capability = cpu_to_le16(capability);
1929         lbs_add_rates(cmd.rates);
1930
1931
1932         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1933         if (ret)
1934                 goto out;
1935
1936         /*
1937          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1938          *
1939          * response        2b 80
1940          * size            14 00
1941          * sequence        xx xx
1942          * result          00 00
1943          * reserved        00
1944          * bssid           02 2b 7b 0f 86 0e
1945          */
1946         lbs_join_post(priv, params, resp->bssid, capability);
1947
1948  out:
1949         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1950         return ret;
1951 }
1952
1953
1954 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1955                 struct cfg80211_ibss_params *params)
1956 {
1957         struct lbs_private *priv = wiphy_priv(wiphy);
1958         int ret = 0;
1959         struct cfg80211_bss *bss;
1960         DECLARE_SSID_BUF(ssid_buf);
1961
1962         lbs_deb_enter(LBS_DEB_CFG80211);
1963
1964         if (!params->channel) {
1965                 ret = -ENOTSUPP;
1966                 goto out;
1967         }
1968
1969         ret = lbs_set_channel(priv, params->channel->hw_value);
1970         if (ret)
1971                 goto out;
1972
1973         /* Search if someone is beaconing. This assumes that the
1974          * bss list is populated already */
1975         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1976                 params->ssid, params->ssid_len,
1977                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1978
1979         if (bss) {
1980                 ret = lbs_ibss_join_existing(priv, params, bss);
1981                 cfg80211_put_bss(bss);
1982         } else
1983                 ret = lbs_ibss_start_new(priv, params);
1984
1985
1986  out:
1987         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1988         return ret;
1989 }
1990
1991
1992 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1993 {
1994         struct lbs_private *priv = wiphy_priv(wiphy);
1995         struct cmd_ds_802_11_ad_hoc_stop cmd;
1996         int ret = 0;
1997
1998         lbs_deb_enter(LBS_DEB_CFG80211);
1999
2000         memset(&cmd, 0, sizeof(cmd));
2001         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2002         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2003
2004         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2005         lbs_mac_event_disconnected(priv);
2006
2007         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2008         return ret;
2009 }
2010
2011
2012
2013
2014 /*
2015  * Initialization
2016  */
2017
2018 static struct cfg80211_ops lbs_cfg80211_ops = {
2019         .set_channel = lbs_cfg_set_channel,
2020         .scan = lbs_cfg_scan,
2021         .connect = lbs_cfg_connect,
2022         .disconnect = lbs_cfg_disconnect,
2023         .add_key = lbs_cfg_add_key,
2024         .del_key = lbs_cfg_del_key,
2025         .set_default_key = lbs_cfg_set_default_key,
2026         .get_station = lbs_cfg_get_station,
2027         .dump_survey = lbs_get_survey,
2028         .change_virtual_intf = lbs_change_intf,
2029         .join_ibss = lbs_join_ibss,
2030         .leave_ibss = lbs_leave_ibss,
2031 };
2032
2033
2034 /*
2035  * At this time lbs_private *priv doesn't even exist, so we just allocate
2036  * memory and don't initialize the wiphy further. This is postponed until we
2037  * can talk to the firmware and happens at registration time in
2038  * lbs_cfg_wiphy_register().
2039  */
2040 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2041 {
2042         int ret = 0;
2043         struct wireless_dev *wdev;
2044
2045         lbs_deb_enter(LBS_DEB_CFG80211);
2046
2047         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2048         if (!wdev) {
2049                 dev_err(dev, "cannot allocate wireless device\n");
2050                 return ERR_PTR(-ENOMEM);
2051         }
2052
2053         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2054         if (!wdev->wiphy) {
2055                 dev_err(dev, "cannot allocate wiphy\n");
2056                 ret = -ENOMEM;
2057                 goto err_wiphy_new;
2058         }
2059
2060         lbs_deb_leave(LBS_DEB_CFG80211);
2061         return wdev;
2062
2063  err_wiphy_new:
2064         kfree(wdev);
2065         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2066         return ERR_PTR(ret);
2067 }
2068
2069
2070 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2071 {
2072         struct region_code_mapping {
2073                 const char *cn;
2074                 int code;
2075         };
2076
2077         /* Section 5.17.2 */
2078         static const struct region_code_mapping regmap[] = {
2079                 {"US ", 0x10}, /* US FCC */
2080                 {"CA ", 0x20}, /* Canada */
2081                 {"EU ", 0x30}, /* ETSI   */
2082                 {"ES ", 0x31}, /* Spain  */
2083                 {"FR ", 0x32}, /* France */
2084                 {"JP ", 0x40}, /* Japan  */
2085         };
2086         size_t i;
2087
2088         lbs_deb_enter(LBS_DEB_CFG80211);
2089
2090         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2091                 if (regmap[i].code == priv->regioncode) {
2092                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2093                         break;
2094                 }
2095
2096         lbs_deb_leave(LBS_DEB_CFG80211);
2097 }
2098
2099
2100 /*
2101  * This function get's called after lbs_setup_firmware() determined the
2102  * firmware capabities. So we can setup the wiphy according to our
2103  * hardware/firmware.
2104  */
2105 int lbs_cfg_register(struct lbs_private *priv)
2106 {
2107         struct wireless_dev *wdev = priv->wdev;
2108         int ret;
2109
2110         lbs_deb_enter(LBS_DEB_CFG80211);
2111
2112         wdev->wiphy->max_scan_ssids = 1;
2113         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2114
2115         wdev->wiphy->interface_modes =
2116                         BIT(NL80211_IFTYPE_STATION) |
2117                         BIT(NL80211_IFTYPE_ADHOC);
2118         if (lbs_rtap_supported(priv))
2119                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2120
2121         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2122
2123         /*
2124          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2125          * never seen a firmware without WPA
2126          */
2127         wdev->wiphy->cipher_suites = cipher_suites;
2128         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2129         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2130
2131         ret = wiphy_register(wdev->wiphy);
2132         if (ret < 0)
2133                 pr_err("cannot register wiphy device\n");
2134
2135         priv->wiphy_registered = true;
2136
2137         ret = register_netdev(priv->dev);
2138         if (ret)
2139                 pr_err("cannot register network device\n");
2140
2141         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2142
2143         lbs_cfg_set_regulatory_hint(priv);
2144
2145         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2146         return ret;
2147 }
2148
2149 int lbs_reg_notifier(struct wiphy *wiphy,
2150                 struct regulatory_request *request)
2151 {
2152         struct lbs_private *priv = wiphy_priv(wiphy);
2153         int ret;
2154
2155         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2156                         "callback for domain %c%c\n", request->alpha2[0],
2157                         request->alpha2[1]);
2158
2159         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2160
2161         lbs_deb_leave(LBS_DEB_CFG80211);
2162         return ret;
2163 }
2164
2165 void lbs_scan_deinit(struct lbs_private *priv)
2166 {
2167         lbs_deb_enter(LBS_DEB_CFG80211);
2168         cancel_delayed_work_sync(&priv->scan_work);
2169 }
2170
2171
2172 void lbs_cfg_free(struct lbs_private *priv)
2173 {
2174         struct wireless_dev *wdev = priv->wdev;
2175
2176         lbs_deb_enter(LBS_DEB_CFG80211);
2177
2178         if (!wdev)
2179                 return;
2180
2181         if (priv->wiphy_registered)
2182                 wiphy_unregister(wdev->wiphy);
2183
2184         if (wdev->wiphy)
2185                 wiphy_free(wdev->wiphy);
2186
2187         kfree(wdev);
2188 }