drivers/net/wireless/marvell/libertas/cfg.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Implement cfg80211 ("iw") support.
   4  *
   5  * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
   6  * Holger Schurig <hs4233@mail.mn-solutions.de>
   7  *
   8  */
   9
  10 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  11
  12 #include <linux/hardirq.h>
  13 #include <linux/sched.h>
  14 #include <linux/wait.h>
  15 #include <linux/slab.h>
  16 #include <linux/ieee80211.h>
  17 #include <net/cfg80211.h>
  18 #include <asm/unaligned.h>
  19
  20 #include "decl.h"
  21 #include "cfg.h"
  22 #include "cmd.h"
  23 #include "mesh.h"
  24
  25
  26 #define CHAN2G(_channel, _freq, _flags) {        \
  27         .band             = NL80211_BAND_2GHZ, \
  28         .center_freq      = (_freq),             \
  29         .hw_value         = (_channel),          \
  30         .flags            = (_flags),            \
  31         .max_antenna_gain = 0,                   \
  32         .max_power        = 30,                  \
  33 }
  34
  35 static struct ieee80211_channel lbs_2ghz_channels[] = {
  36         CHAN2G(1,  2412, 0),
  37         CHAN2G(2,  2417, 0),
  38         CHAN2G(3,  2422, 0),
  39         CHAN2G(4,  2427, 0),
  40         CHAN2G(5,  2432, 0),
  41         CHAN2G(6,  2437, 0),
  42         CHAN2G(7,  2442, 0),
  43         CHAN2G(8,  2447, 0),
  44         CHAN2G(9,  2452, 0),
  45         CHAN2G(10, 2457, 0),
  46         CHAN2G(11, 2462, 0),
  47         CHAN2G(12, 2467, 0),
  48         CHAN2G(13, 2472, 0),
  49         CHAN2G(14, 2484, 0),
  50 };
  51
  52 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  53         .bitrate  = (_rate),                    \
  54         .hw_value = (_hw_value),                \
  55         .flags    = (_flags),                   \
  56 }
  57
  58
  59 /* Table 6 in section 3.2.1.1 */
  60 static struct ieee80211_rate lbs_rates[] = {
  61         RATETAB_ENT(10,  0,  0),
  62         RATETAB_ENT(20,  1,  0),
  63         RATETAB_ENT(55,  2,  0),
  64         RATETAB_ENT(110, 3,  0),
  65         RATETAB_ENT(60,  9,  0),
  66         RATETAB_ENT(90,  6,  0),
  67         RATETAB_ENT(120, 7,  0),
  68         RATETAB_ENT(180, 8,  0),
  69         RATETAB_ENT(240, 9,  0),
  70         RATETAB_ENT(360, 10, 0),
  71         RATETAB_ENT(480, 11, 0),
  72         RATETAB_ENT(540, 12, 0),
  73 };
  74
  75 static struct ieee80211_supported_band lbs_band_2ghz = {
  76         .channels = lbs_2ghz_channels,
  77         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  78         .bitrates = lbs_rates,
  79         .n_bitrates = ARRAY_SIZE(lbs_rates),
  80 };
  81
  82
  83 static const u32 cipher_suites[] = {
  84         WLAN_CIPHER_SUITE_WEP40,
  85         WLAN_CIPHER_SUITE_WEP104,
  86         WLAN_CIPHER_SUITE_TKIP,
  87         WLAN_CIPHER_SUITE_CCMP,
  88 };
  89
  90 /* Time to stay on the channel */
  91 #define LBS_DWELL_PASSIVE 100
  92 #define LBS_DWELL_ACTIVE  40
  93
  94
  95 /***************************************************************************
  96  * Misc utility functions
  97  *
  98  * TLVs are Marvell specific. They are very similar to IEs, they have the
  99  * same structure: type, length, data*. The only difference: for IEs, the
 100  * type and length are u8, but for TLVs they're __le16.
 101  */
 102
 103 /*
 104  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
 105  * in the firmware spec
 106  */
 107 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 108 {
 109         int ret = -ENOTSUPP;
 110
 111         switch (auth_type) {
 112         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 113         case NL80211_AUTHTYPE_SHARED_KEY:
 114                 ret = auth_type;
 115                 break;
 116         case NL80211_AUTHTYPE_AUTOMATIC:
 117                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 118                 break;
 119         case NL80211_AUTHTYPE_NETWORK_EAP:
 120                 ret = 0x80;
 121                 break;
 122         default:
 123                 /* silence compiler */
 124                 break;
 125         }
 126         return ret;
 127 }
 128
 129
 130 /*
 131  * Various firmware commands need the list of supported rates, but with
 132  * the hight-bit set for basic rates
 133  */
 134 static int lbs_add_rates(u8 *rates)
 135 {
 136         size_t i;
 137
 138         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 139                 u8 rate = lbs_rates[i].bitrate / 5;
 140                 if (rate == 0x02 || rate == 0x04 ||
 141                     rate == 0x0b || rate == 0x16)
 142                         rate |= 0x80;
 143                 rates[i] = rate;
 144         }
 145         return ARRAY_SIZE(lbs_rates);
 146 }
 147
 148
 149 /***************************************************************************
 150  * TLV utility functions
 151  *
 152  * TLVs are Marvell specific. They are very similar to IEs, they have the
 153  * same structure: type, length, data*. The only difference: for IEs, the
 154  * type and length are u8, but for TLVs they're __le16.
 155  */
 156
 157
 158 /*
 159  * Add ssid TLV
 160  */
 161 #define LBS_MAX_SSID_TLV_SIZE                   \
 162         (sizeof(struct mrvl_ie_header)          \
 163          + IEEE80211_MAX_SSID_LEN)
 164
 165 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 166 {
 167         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 168
 169         /*
 170          * TLV-ID SSID  00 00
 171          * length       06 00
 172          * ssid         4d 4e 54 45 53 54
 173          */
 174         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 175         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 176         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 177         return sizeof(ssid_tlv->header) + ssid_len;
 178 }
 179
 180
 181 /*
 182  * Add channel list TLV (section 8.4.2)
 183  *
 184  * Actual channel data comes from priv->wdev->wiphy->channels.
 185  */
 186 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 187         (sizeof(struct mrvl_ie_header)                                  \
 188          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 189
 190 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 191                                     int last_channel, int active_scan)
 192 {
 193         int chanscanparamsize = sizeof(struct chanscanparamset) *
 194                 (last_channel - priv->scan_channel);
 195
 196         struct mrvl_ie_header *header = (void *) tlv;
 197
 198         /*
 199          * TLV-ID CHANLIST  01 01
 200          * length           0e 00
 201          * channel          00 01 00 00 00 64 00
 202          *   radio type     00
 203          *   channel           01
 204          *   scan type            00
 205          *   min scan time           00 00
 206          *   max scan time                 64 00
 207          * channel 2        00 02 00 00 00 64 00
 208          *
 209          */
 210
 211         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 212         header->len  = cpu_to_le16(chanscanparamsize);
 213         tlv += sizeof(struct mrvl_ie_header);
 214
 215         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 216                      last_channel); */
 217         memset(tlv, 0, chanscanparamsize);
 218
 219         while (priv->scan_channel < last_channel) {
 220                 struct chanscanparamset *param = (void *) tlv;
 221
 222                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 223                 param->channumber =
 224                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 225                 if (active_scan) {
 226                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 227                 } else {
 228                         param->chanscanmode.passivescan = 1;
 229                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 230                 }
 231                 tlv += sizeof(struct chanscanparamset);
 232                 priv->scan_channel++;
 233         }
 234         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 235 }
 236
 237
 238 /*
 239  * Add rates TLV
 240  *
 241  * The rates are in lbs_bg_rates[], but for the 802.11b
 242  * rates the high bit is set. We add this TLV only because
 243  * there's a firmware which otherwise doesn't report all
 244  * APs in range.
 245  */
 246 #define LBS_MAX_RATES_TLV_SIZE                  \
 247         (sizeof(struct mrvl_ie_header)          \
 248          + (ARRAY_SIZE(lbs_rates)))
 249
 250 /* Adds a TLV with all rates the hardware supports */
 251 static int lbs_add_supported_rates_tlv(u8 *tlv)
 252 {
 253         size_t i;
 254         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 255
 256         /*
 257          * TLV-ID RATES  01 00
 258          * length        0e 00
 259          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 260          */
 261         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 262         tlv += sizeof(rate_tlv->header);
 263         i = lbs_add_rates(tlv);
 264         tlv += i;
 265         rate_tlv->header.len = cpu_to_le16(i);
 266         return sizeof(rate_tlv->header) + i;
 267 }
 268
 269 /* Add common rates from a TLV and return the new end of the TLV */
 270 static u8 *
 271 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 272 {
 273         int hw, ap, ap_max = ie[1];
 274         u8 hw_rate;
 275
 276         /* Advance past IE header */
 277         ie += 2;
 278
 279         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 280
 281         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 282                 hw_rate = lbs_rates[hw].bitrate / 5;
 283                 for (ap = 0; ap < ap_max; ap++) {
 284                         if (hw_rate == (ie[ap] & 0x7f)) {
 285                                 *tlv++ = ie[ap];
 286                                 *nrates = *nrates + 1;
 287                         }
 288                 }
 289         }
 290         return tlv;
 291 }
 292
 293 /*
 294  * Adds a TLV with all rates the hardware *and* BSS supports.
 295  */
 296 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 297 {
 298         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 299         const u8 *rates_eid, *ext_rates_eid;
 300         int n = 0;
 301
 302         rcu_read_lock();
 303         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 304         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 305
 306         /*
 307          * 01 00                   TLV_TYPE_RATES
 308          * 04 00                   len
 309          * 82 84 8b 96             rates
 310          */
 311         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 312         tlv += sizeof(rate_tlv->header);
 313
 314         /* Add basic rates */
 315         if (rates_eid) {
 316                 tlv = add_ie_rates(tlv, rates_eid, &n);
 317
 318                 /* Add extended rates, if any */
 319                 if (ext_rates_eid)
 320                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 321         } else {
 322                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 323                 /* Fallback: add basic 802.11b rates */
 324                 *tlv++ = 0x82;
 325                 *tlv++ = 0x84;
 326                 *tlv++ = 0x8b;
 327                 *tlv++ = 0x96;
 328                 n = 4;
 329         }
 330         rcu_read_unlock();
 331
 332         rate_tlv->header.len = cpu_to_le16(n);
 333         return sizeof(rate_tlv->header) + n;
 334 }
 335
 336
 337 /*
 338  * Add auth type TLV.
 339  *
 340  * This is only needed for newer firmware (V9 and up).
 341  */
 342 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 343         sizeof(struct mrvl_ie_auth_type)
 344
 345 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 346 {
 347         struct mrvl_ie_auth_type *auth = (void *) tlv;
 348
 349         /*
 350          * 1f 01  TLV_TYPE_AUTH_TYPE
 351          * 01 00  len
 352          * 01     auth type
 353          */
 354         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 355         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 356         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 357         return sizeof(*auth);
 358 }
 359
 360
 361 /*
 362  * Add channel (phy ds) TLV
 363  */
 364 #define LBS_MAX_CHANNEL_TLV_SIZE \
 365         sizeof(struct mrvl_ie_header)
 366
 367 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 368 {
 369         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 370
 371         /*
 372          * 03 00  TLV_TYPE_PHY_DS
 373          * 01 00  len
 374          * 06     channel
 375          */
 376         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 377         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 378         ds->channel = channel;
 379         return sizeof(*ds);
 380 }
 381
 382
 383 /*
 384  * Add (empty) CF param TLV of the form:
 385  */
 386 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 387         sizeof(struct mrvl_ie_header)
 388
 389 static int lbs_add_cf_param_tlv(u8 *tlv)
 390 {
 391         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 392
 393         /*
 394          * 04 00  TLV_TYPE_CF
 395          * 06 00  len
 396          * 00     cfpcnt
 397          * 00     cfpperiod
 398          * 00 00  cfpmaxduration
 399          * 00 00  cfpdurationremaining
 400          */
 401         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 402         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 403         return sizeof(*cf);
 404 }
 405
 406 /*
 407  * Add WPA TLV
 408  */
 409 #define LBS_MAX_WPA_TLV_SIZE                    \
 410         (sizeof(struct mrvl_ie_header)          \
 411          + 128 /* TODO: I guessed the size */)
 412
 413 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 414 {
 415         size_t tlv_len;
 416
 417         /*
 418          * We need just convert an IE to an TLV. IEs use u8 for the header,
 419          *   u8      type
 420          *   u8      len
 421          *   u8[]    data
 422          * but TLVs use __le16 instead:
 423          *   __le16  type
 424          *   __le16  len
 425          *   u8[]    data
 426          */
 427         *tlv++ = *ie++;
 428         *tlv++ = 0;
 429         tlv_len = *tlv++ = *ie++;
 430         *tlv++ = 0;
 431         while (tlv_len--)
 432                 *tlv++ = *ie++;
 433         /* the TLV is two bytes larger than the IE */
 434         return ie_len + 2;
 435 }
 436
 437 /*
 438  * Set Channel
 439  */
 440
 441 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
 442                                        struct cfg80211_chan_def *chandef)
 443 {
 444         struct lbs_private *priv = wiphy_priv(wiphy);
 445         int ret = -ENOTSUPP;
 446
 447         if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
 448                 goto out;
 449
 450         ret = lbs_set_channel(priv, chandef->chan->hw_value);
 451
 452  out:
 453         return ret;
 454 }
 455
 456 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
 457                                     struct net_device *netdev,
 458                                     struct ieee80211_channel *channel)
 459 {
 460         struct lbs_private *priv = wiphy_priv(wiphy);
 461         int ret = -ENOTSUPP;
 462
 463         if (netdev != priv->mesh_dev)
 464                 goto out;
 465
 466         ret = lbs_mesh_set_channel(priv, channel->hw_value);
 467
 468  out:
 469         return ret;
 470 }
 471
 472
 473
 474 /*
 475  * Scanning
 476  */
 477
 478 /*
 479  * When scanning, the firmware doesn't send a nul packet with the power-safe
 480  * bit to the AP. So we cannot stay away from our current channel too long,
 481  * otherwise we loose data. So take a "nap" while scanning every other
 482  * while.
 483  */
 484 #define LBS_SCAN_BEFORE_NAP 4
 485
 486
 487 /*
 488  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 489  * which isn't really an RSSI, as it becomes larger when moving away from
 490  * the AP. Anyway, we need to convert that into mBm.
 491  */
 492 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 493         ((-(int)rssi + 3)*100)
 494
 495 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 496         struct cmd_header *resp)
 497 {
 498         struct cfg80211_bss *bss;
 499         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 500         int bsssize;
 501         const u8 *pos;
 502         const u8 *tsfdesc;
 503         int tsfsize;
 504         int i;
 505         int ret = -EILSEQ;
 506
 507         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 508
 509         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 510                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 511
 512         if (scanresp->nr_sets == 0) {
 513                 ret = 0;
 514                 goto done;
 515         }
 516
 517         /*
 518          * The general layout of the scan response is described in chapter
 519          * 5.7.1. Basically we have a common part, then any number of BSS
 520          * descriptor sections. Finally we have section with the same number
 521          * of TSFs.
 522          *
 523          * cmd_ds_802_11_scan_rsp
 524          *   cmd_header
 525          *   pos_size
 526          *   nr_sets
 527          *   bssdesc 1
 528          *     bssid
 529          *     rssi
 530          *     timestamp
 531          *     intvl
 532          *     capa
 533          *     IEs
 534          *   bssdesc 2
 535          *   bssdesc n
 536          *   MrvlIEtypes_TsfFimestamp_t
 537          *     TSF for BSS 1
 538          *     TSF for BSS 2
 539          *     TSF for BSS n
 540          */
 541
 542         pos = scanresp->bssdesc_and_tlvbuffer;
 543
 544         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 545                         scanresp->bssdescriptsize);
 546
 547         tsfdesc = pos + bsssize;
 548         tsfsize = 4 + 8 * scanresp->nr_sets;
 549         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 550
 551         /* Validity check: we expect a Marvell-Local TLV */
 552         i = get_unaligned_le16(tsfdesc);
 553         tsfdesc += 2;
 554         if (i != TLV_TYPE_TSFTIMESTAMP) {
 555                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 556                 goto done;
 557         }
 558
 559         /*
 560          * Validity check: the TLV holds TSF values with 8 bytes each, so
 561          * the size in the TLV must match the nr_sets value
 562          */
 563         i = get_unaligned_le16(tsfdesc);
 564         tsfdesc += 2;
 565         if (i / 8 != scanresp->nr_sets) {
 566                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 567                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 568                              i / 8);
 569                 goto done;
 570         }
 571
 572         for (i = 0; i < scanresp->nr_sets; i++) {
 573                 const u8 *bssid;
 574                 const u8 *ie;
 575                 int left;
 576                 int ielen;
 577                 int rssi;
 578                 u16 intvl;
 579                 u16 capa;
 580                 int chan_no = -1;
 581                 const u8 *ssid = NULL;
 582                 u8 ssid_len = 0;
 583
 584                 int len = get_unaligned_le16(pos);
 585                 pos += 2;
 586
 587                 /* BSSID */
 588                 bssid = pos;
 589                 pos += ETH_ALEN;
 590                 /* RSSI */
 591                 rssi = *pos++;
 592                 /* Packet time stamp */
 593                 pos += 8;
 594                 /* Beacon interval */
 595                 intvl = get_unaligned_le16(pos);
 596                 pos += 2;
 597                 /* Capabilities */
 598                 capa = get_unaligned_le16(pos);
 599                 pos += 2;
 600
 601                 /* To find out the channel, we must parse the IEs */
 602                 ie = pos;
 603                 /*
 604                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 605                  * interval, capabilities
 606                  */
 607                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 608                 while (left >= 2) {
 609                         u8 id, elen;
 610                         id = *pos++;
 611                         elen = *pos++;
 612                         left -= 2;
 613                         if (elen > left) {
 614                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 615                                 goto done;
 616                         }
 617
 618                         if (id == WLAN_EID_DS_PARAMS)
 619                                 chan_no = *pos;
 620                         if (id == WLAN_EID_SSID) {
 621                                 ssid = pos;
 622                                 ssid_len = elen;
 623                         }
 624                         left -= elen;
 625                         pos += elen;
 626                 }
 627
 628                 /* No channel, no luck */
 629                 if (chan_no != -1) {
 630                         struct wiphy *wiphy = priv->wdev->wiphy;
 631                         int freq = ieee80211_channel_to_frequency(chan_no,
 632                                                         NL80211_BAND_2GHZ);
 633                         struct ieee80211_channel *channel =
 634                                 ieee80211_get_channel(wiphy, freq);
 635
 636                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
 637                                      bssid, capa, chan_no, ssid_len, ssid,
 638                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 639
 640                         if (channel &&
 641                             !(channel->flags & IEEE80211_CHAN_DISABLED)) {
 642                                 bss = cfg80211_inform_bss(wiphy, channel,
 643                                         CFG80211_BSS_FTYPE_UNKNOWN,
 644                                         bssid, get_unaligned_le64(tsfdesc),
 645                                         capa, intvl, ie, ielen,
 646                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 647                                         GFP_KERNEL);
 648                                 cfg80211_put_bss(wiphy, bss);
 649                         }
 650                 } else
 651                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 652
 653                 tsfdesc += 8;
 654         }
 655         ret = 0;
 656
 657  done:
 658         return ret;
 659 }
 660
 661
 662 /*
 663  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 664  * TLV and a rates TLV. Determine the maximum size of them:
 665  */
 666 #define LBS_SCAN_MAX_CMD_SIZE                   \
 667         (sizeof(struct cmd_ds_802_11_scan)      \
 668          + LBS_MAX_SSID_TLV_SIZE                \
 669          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 670          + LBS_MAX_RATES_TLV_SIZE)
 671
 672 /*
 673  * Assumes priv->scan_req is initialized and valid
 674  * Assumes priv->scan_channel is initialized
 675  */
 676 static void lbs_scan_worker(struct work_struct *work)
 677 {
 678         struct lbs_private *priv =
 679                 container_of(work, struct lbs_private, scan_work.work);
 680         struct cmd_ds_802_11_scan *scan_cmd;
 681         u8 *tlv; /* pointer into our current, growing TLV storage area */
 682         int last_channel;
 683         int running, carrier;
 684
 685         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 686         if (scan_cmd == NULL)
 687                 return;
 688
 689         /* prepare fixed part of scan command */
 690         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 691
 692         /* stop network while we're away from our main channel */
 693         running = !netif_queue_stopped(priv->dev);
 694         carrier = netif_carrier_ok(priv->dev);
 695         if (running)
 696                 netif_stop_queue(priv->dev);
 697         if (carrier)
 698                 netif_carrier_off(priv->dev);
 699
 700         /* prepare fixed part of scan command */
 701         tlv = scan_cmd->tlvbuffer;
 702
 703         /* add SSID TLV */
 704         if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
 705                 tlv += lbs_add_ssid_tlv(tlv,
 706                                         priv->scan_req->ssids[0].ssid,
 707                                         priv->scan_req->ssids[0].ssid_len);
 708
 709         /* add channel TLVs */
 710         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 711         if (last_channel > priv->scan_req->n_channels)
 712                 last_channel = priv->scan_req->n_channels;
 713         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 714                 priv->scan_req->n_ssids);
 715
 716         /* add rates TLV */
 717         tlv += lbs_add_supported_rates_tlv(tlv);
 718
 719         if (priv->scan_channel < priv->scan_req->n_channels) {
 720                 cancel_delayed_work(&priv->scan_work);
 721                 if (netif_running(priv->dev))
 722                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 723                                 msecs_to_jiffies(300));
 724         }
 725
 726         /* This is the final data we are about to send */
 727         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 728         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 729                     sizeof(*scan_cmd));
 730         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 731                     tlv - scan_cmd->tlvbuffer);
 732
 733         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 734                 le16_to_cpu(scan_cmd->hdr.size),
 735                 lbs_ret_scan, 0);
 736
 737         if (priv->scan_channel >= priv->scan_req->n_channels) {
 738                 /* Mark scan done */
 739                 cancel_delayed_work(&priv->scan_work);
 740                 lbs_scan_done(priv);
 741         }
 742
 743         /* Restart network */
 744         if (carrier)
 745                 netif_carrier_on(priv->dev);
 746         if (running && !priv->tx_pending_len)
 747                 netif_wake_queue(priv->dev);
 748
 749         kfree(scan_cmd);
 750
 751         /* Wake up anything waiting on scan completion */
 752         if (priv->scan_req == NULL) {
 753                 lbs_deb_scan("scan: waking up waiters\n");
 754                 wake_up_all(&priv->scan_q);
 755         }
 756 }
 757
 758 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 759         struct cfg80211_scan_request *request)
 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         priv->scan_req = request;
 766         priv->internal_scan = internal;
 767
 768         queue_delayed_work(priv->work_thread, &priv->scan_work,
 769                 msecs_to_jiffies(50));
 770 }
 771
 772 /*
 773  * Clean up priv->scan_req.  Should be used to handle the allocation details.
 774  */
 775 void lbs_scan_done(struct lbs_private *priv)
 776 {
 777         WARN_ON(!priv->scan_req);
 778
 779         if (priv->internal_scan) {
 780                 kfree(priv->scan_req);
 781         } else {
 782                 struct cfg80211_scan_info info = {
 783                         .aborted = false,
 784                 };
 785
 786                 cfg80211_scan_done(priv->scan_req, &info);
 787         }
 788
 789         priv->scan_req = NULL;
 790 }
 791
 792 static int lbs_cfg_scan(struct wiphy *wiphy,
 793         struct cfg80211_scan_request *request)
 794 {
 795         struct lbs_private *priv = wiphy_priv(wiphy);
 796         int ret = 0;
 797
 798         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 799                 /* old scan request not yet processed */
 800                 ret = -EAGAIN;
 801                 goto out;
 802         }
 803
 804         _internal_start_scan(priv, false, request);
 805
 806         if (priv->surpriseremoved)
 807                 ret = -EIO;
 808
 809  out:
 810         return ret;
 811 }
 812
 813
 814
 815
 816 /*
 817  * Events
 818  */
 819
 820 void lbs_send_disconnect_notification(struct lbs_private *priv,
 821                                       bool locally_generated)
 822 {
 823         cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
 824                               GFP_KERNEL);
 825 }
 826
 827 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 828 {
 829         cfg80211_michael_mic_failure(priv->dev,
 830                 priv->assoc_bss,
 831                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 832                         NL80211_KEYTYPE_GROUP :
 833                         NL80211_KEYTYPE_PAIRWISE,
 834                 -1,
 835                 NULL,
 836                 GFP_KERNEL);
 837 }
 838
 839
 840
 841
 842 /*
 843  * Connect/disconnect
 844  */
 845
 846
 847 /*
 848  * This removes all WEP keys
 849  */
 850 static int lbs_remove_wep_keys(struct lbs_private *priv)
 851 {
 852         struct cmd_ds_802_11_set_wep cmd;
 853         int ret;
 854
 855         memset(&cmd, 0, sizeof(cmd));
 856         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 857         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 858         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 859
 860         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 861
 862         return ret;
 863 }
 864
 865 /*
 866  * Set WEP keys
 867  */
 868 static int lbs_set_wep_keys(struct lbs_private *priv)
 869 {
 870         struct cmd_ds_802_11_set_wep cmd;
 871         int i;
 872         int ret;
 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         return ret;
 924 }
 925
 926
 927 /*
 928  * Enable/Disable RSN status
 929  */
 930 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 931 {
 932         struct cmd_ds_802_11_enable_rsn cmd;
 933         int ret;
 934
 935         /*
 936          * cmd       2f 00
 937          * size      0c 00
 938          * sequence  xx xx
 939          * result    00 00
 940          * action    01 00    ACT_SET
 941          * enable    01 00
 942          */
 943         memset(&cmd, 0, sizeof(cmd));
 944         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 945         cmd.action = cpu_to_le16(CMD_ACT_SET);
 946         cmd.enable = cpu_to_le16(enable);
 947
 948         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 949
 950         return ret;
 951 }
 952
 953
 954 /*
 955  * Set WPA/WPA key material
 956  */
 957
 958 /*
 959  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 960  * get rid of WEXT, this should go into host.h
 961  */
 962
 963 struct cmd_key_material {
 964         struct cmd_header hdr;
 965
 966         __le16 action;
 967         struct MrvlIEtype_keyParamSet param;
 968 } __packed;
 969
 970 static int lbs_set_key_material(struct lbs_private *priv,
 971                                 int key_type, int key_info,
 972                                 const u8 *key, u16 key_len)
 973 {
 974         struct cmd_key_material cmd;
 975         int ret;
 976
 977         /*
 978          * Example for WPA (TKIP):
 979          *
 980          * cmd       5e 00
 981          * size      34 00
 982          * sequence  xx xx
 983          * result    00 00
 984          * action    01 00
 985          * TLV type  00 01    key param
 986          * length    00 26
 987          * key type  01 00    TKIP
 988          * key info  06 00    UNICAST | ENABLED
 989          * key len   20 00
 990          * key       32 bytes
 991          */
 992         memset(&cmd, 0, sizeof(cmd));
 993         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 994         cmd.action = cpu_to_le16(CMD_ACT_SET);
 995         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
 996         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
 997         cmd.param.keytypeid = cpu_to_le16(key_type);
 998         cmd.param.keyinfo = cpu_to_le16(key_info);
 999         cmd.param.keylen = cpu_to_le16(key_len);
1000         if (key && key_len)
1001                 memcpy(cmd.param.key, key, key_len);
1002
1003         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1004
1005         return ret;
1006 }
1007
1008
1009 /*
1010  * Sets the auth type (open, shared, etc) in the firmware. That
1011  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1012  * command doesn't send an authentication frame at all, it just
1013  * stores the auth_type.
1014  */
1015 static int lbs_set_authtype(struct lbs_private *priv,
1016                             struct cfg80211_connect_params *sme)
1017 {
1018         struct cmd_ds_802_11_authenticate cmd;
1019         int ret;
1020
1021         /*
1022          * cmd        11 00
1023          * size       19 00
1024          * sequence   xx xx
1025          * result     00 00
1026          * BSS id     00 13 19 80 da 30
1027          * auth type  00
1028          * reserved   00 00 00 00 00 00 00 00 00 00
1029          */
1030         memset(&cmd, 0, sizeof(cmd));
1031         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1032         if (sme->bssid)
1033                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1034         /* convert auth_type */
1035         ret = lbs_auth_to_authtype(sme->auth_type);
1036         if (ret < 0)
1037                 goto done;
1038
1039         cmd.authtype = ret;
1040         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1041
1042  done:
1043         return ret;
1044 }
1045
1046
1047 /*
1048  * Create association request
1049  */
1050 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1051         (sizeof(struct cmd_ds_802_11_associate)    \
1052          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1053          + LBS_MAX_SSID_TLV_SIZE                   \
1054          + LBS_MAX_CHANNEL_TLV_SIZE                \
1055          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1056          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1057          + LBS_MAX_WPA_TLV_SIZE)
1058
1059 static int lbs_associate(struct lbs_private *priv,
1060                 struct cfg80211_bss *bss,
1061                 struct cfg80211_connect_params *sme)
1062 {
1063         struct cmd_ds_802_11_associate_response *resp;
1064         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1065                                                       GFP_KERNEL);
1066         const u8 *ssid_eid;
1067         size_t len, resp_ie_len;
1068         int status;
1069         int ret;
1070         u8 *pos;
1071         u8 *tmp;
1072
1073         if (!cmd) {
1074                 ret = -ENOMEM;
1075                 goto done;
1076         }
1077         pos = &cmd->iebuf[0];
1078
1079         /*
1080          * cmd              50 00
1081          * length           34 00
1082          * sequence         xx xx
1083          * result           00 00
1084          * BSS id           00 13 19 80 da 30
1085          * capabilities     11 00
1086          * listen interval  0a 00
1087          * beacon interval  00 00
1088          * DTIM period      00
1089          * TLVs             xx   (up to 512 bytes)
1090          */
1091         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1092
1093         /* Fill in static fields */
1094         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1095         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1096         cmd->capability = cpu_to_le16(bss->capability);
1097
1098         /* add SSID TLV */
1099         rcu_read_lock();
1100         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1101         if (ssid_eid)
1102                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1103         else
1104                 lbs_deb_assoc("no SSID\n");
1105         rcu_read_unlock();
1106
1107         /* add DS param TLV */
1108         if (bss->channel)
1109                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1110         else
1111                 lbs_deb_assoc("no channel\n");
1112
1113         /* add (empty) CF param TLV */
1114         pos += lbs_add_cf_param_tlv(pos);
1115
1116         /* add rates TLV */
1117         tmp = pos + 4; /* skip Marvell IE header */
1118         pos += lbs_add_common_rates_tlv(pos, bss);
1119         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1120
1121         /* add auth type TLV */
1122         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1123                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1124
1125         /* add WPA/WPA2 TLV */
1126         if (sme->ie && sme->ie_len)
1127                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1128
1129         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1130                 (u16)(pos - (u8 *) &cmd->iebuf);
1131         cmd->hdr.size = cpu_to_le16(len);
1132
1133         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1134                         le16_to_cpu(cmd->hdr.size));
1135
1136         /* store for later use */
1137         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1138
1139         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1140         if (ret)
1141                 goto done;
1142
1143         /* generate connect message to cfg80211 */
1144
1145         resp = (void *) cmd; /* recast for easier field access */
1146         status = le16_to_cpu(resp->statuscode);
1147
1148         /* Older FW versions map the IEEE 802.11 Status Code in the association
1149          * response to the following values returned in resp->statuscode:
1150          *
1151          *    IEEE Status Code                Marvell Status Code
1152          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1153          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1154          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1155          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1156          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1157          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1158          *
1159          * Other response codes:
1160          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1161          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1162          *                                    association response from the AP)
1163          */
1164         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1165                 switch (status) {
1166                 case 0:
1167                         break;
1168                 case 1:
1169                         lbs_deb_assoc("invalid association parameters\n");
1170                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1171                         break;
1172                 case 2:
1173                         lbs_deb_assoc("timer expired while waiting for AP\n");
1174                         status = WLAN_STATUS_AUTH_TIMEOUT;
1175                         break;
1176                 case 3:
1177                         lbs_deb_assoc("association refused by AP\n");
1178                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1179                         break;
1180                 case 4:
1181                         lbs_deb_assoc("authentication refused by AP\n");
1182                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1183                         break;
1184                 default:
1185                         lbs_deb_assoc("association failure %d\n", status);
1186                         /* v5 OLPC firmware does return the AP status code if
1187                          * it's not one of the values above.  Let that through.
1188                          */
1189                         break;
1190                 }
1191         }
1192
1193         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1194                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1195                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1196
1197         resp_ie_len = le16_to_cpu(resp->hdr.size)
1198                 - sizeof(resp->hdr)
1199                 - 6;
1200         cfg80211_connect_result(priv->dev,
1201                                 priv->assoc_bss,
1202                                 sme->ie, sme->ie_len,
1203                                 resp->iebuf, resp_ie_len,
1204                                 status,
1205                                 GFP_KERNEL);
1206
1207         if (status == 0) {
1208                 /* TODO: get rid of priv->connect_status */
1209                 priv->connect_status = LBS_CONNECTED;
1210                 netif_carrier_on(priv->dev);
1211                 if (!priv->tx_pending_len)
1212                         netif_tx_wake_all_queues(priv->dev);
1213         }
1214
1215         kfree(cmd);
1216 done:
1217         return ret;
1218 }
1219
1220 static struct cfg80211_scan_request *
1221 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1222 {
1223         struct cfg80211_scan_request *creq = NULL;
1224         int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1225         enum nl80211_band band;
1226
1227         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1228                        n_channels * sizeof(void *),
1229                        GFP_ATOMIC);
1230         if (!creq)
1231                 return NULL;
1232
1233         /* SSIDs come after channels */
1234         creq->ssids = (void *)&creq->channels[n_channels];
1235         creq->n_channels = n_channels;
1236         creq->n_ssids = 1;
1237
1238         /* Scan all available channels */
1239         i = 0;
1240         for (band = 0; band < NUM_NL80211_BANDS; band++) {
1241                 int j;
1242
1243                 if (!wiphy->bands[band])
1244                         continue;
1245
1246                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1247                         /* ignore disabled channels */
1248                         if (wiphy->bands[band]->channels[j].flags &
1249                                                 IEEE80211_CHAN_DISABLED)
1250                                 continue;
1251
1252                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1253                         i++;
1254                 }
1255         }
1256         if (i) {
1257                 /* Set real number of channels specified in creq->channels[] */
1258                 creq->n_channels = i;
1259
1260                 /* Scan for the SSID we're going to connect to */
1261                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1262                 creq->ssids[0].ssid_len = sme->ssid_len;
1263         } else {
1264                 /* No channels found... */
1265                 kfree(creq);
1266                 creq = NULL;
1267         }
1268
1269         return creq;
1270 }
1271
1272 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1273                            struct cfg80211_connect_params *sme)
1274 {
1275         struct lbs_private *priv = wiphy_priv(wiphy);
1276         struct cfg80211_bss *bss = NULL;
1277         int ret = 0;
1278         u8 preamble = RADIO_PREAMBLE_SHORT;
1279
1280         if (dev == priv->mesh_dev)
1281                 return -EOPNOTSUPP;
1282
1283         if (!sme->bssid) {
1284                 struct cfg80211_scan_request *creq;
1285
1286                 /*
1287                  * Scan for the requested network after waiting for existing
1288                  * scans to finish.
1289                  */
1290                 lbs_deb_assoc("assoc: waiting for existing scans\n");
1291                 wait_event_interruptible_timeout(priv->scan_q,
1292                                                  (priv->scan_req == NULL),
1293                                                  (15 * HZ));
1294
1295                 creq = _new_connect_scan_req(wiphy, sme);
1296                 if (!creq) {
1297                         ret = -EINVAL;
1298                         goto done;
1299                 }
1300
1301                 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1302                 _internal_start_scan(priv, true, creq);
1303
1304                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1305                 wait_event_interruptible_timeout(priv->scan_q,
1306                                                  (priv->scan_req == NULL),
1307                                                  (15 * HZ));
1308                 lbs_deb_assoc("assoc: scanning completed\n");
1309         }
1310
1311         /* Find the BSS we want using available scan results */
1312         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1313                 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1314                 IEEE80211_PRIVACY_ANY);
1315         if (!bss) {
1316                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1317                           sme->bssid);
1318                 ret = -ENOENT;
1319                 goto done;
1320         }
1321         lbs_deb_assoc("trying %pM\n", bss->bssid);
1322         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1323                       sme->crypto.cipher_group,
1324                       sme->key_idx, sme->key_len);
1325
1326         /* As this is a new connection, clear locally stored WEP keys */
1327         priv->wep_tx_key = 0;
1328         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1329         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1330
1331         /* set/remove WEP keys */
1332         switch (sme->crypto.cipher_group) {
1333         case WLAN_CIPHER_SUITE_WEP40:
1334         case WLAN_CIPHER_SUITE_WEP104:
1335                 /* Store provided WEP keys in priv-> */
1336                 priv->wep_tx_key = sme->key_idx;
1337                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1338                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1339                 /* Set WEP keys and WEP mode */
1340                 lbs_set_wep_keys(priv);
1341                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1342                 lbs_set_mac_control(priv);
1343                 /* No RSN mode for WEP */
1344                 lbs_enable_rsn(priv, 0);
1345                 break;
1346         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1347                 /*
1348                  * If we don't have no WEP, no WPA and no WPA2,
1349                  * we remove all keys like in the WPA/WPA2 setup,
1350                  * we just don't set RSN.
1351                  *
1352                  * Therefore: fall-through
1353                  */
1354         case WLAN_CIPHER_SUITE_TKIP:
1355         case WLAN_CIPHER_SUITE_CCMP:
1356                 /* Remove WEP keys and WEP mode */
1357                 lbs_remove_wep_keys(priv);
1358                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1359                 lbs_set_mac_control(priv);
1360
1361                 /* clear the WPA/WPA2 keys */
1362                 lbs_set_key_material(priv,
1363                         KEY_TYPE_ID_WEP, /* doesn't matter */
1364                         KEY_INFO_WPA_UNICAST,
1365                         NULL, 0);
1366                 lbs_set_key_material(priv,
1367                         KEY_TYPE_ID_WEP, /* doesn't matter */
1368                         KEY_INFO_WPA_MCAST,
1369                         NULL, 0);
1370                 /* RSN mode for WPA/WPA2 */
1371                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1372                 break;
1373         default:
1374                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1375                           sme->crypto.cipher_group);
1376                 ret = -ENOTSUPP;
1377                 goto done;
1378         }
1379
1380         ret = lbs_set_authtype(priv, sme);
1381         if (ret == -ENOTSUPP) {
1382                 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1383                 goto done;
1384         }
1385
1386         lbs_set_radio(priv, preamble, 1);
1387
1388         /* Do the actual association */
1389         ret = lbs_associate(priv, bss, sme);
1390
1391  done:
1392         if (bss)
1393                 cfg80211_put_bss(wiphy, bss);
1394         return ret;
1395 }
1396
1397 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1398 {
1399         struct cmd_ds_802_11_deauthenticate cmd;
1400         int ret;
1401
1402         memset(&cmd, 0, sizeof(cmd));
1403         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1404         /* Mildly ugly to use a locally store my own BSSID ... */
1405         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1406         cmd.reasoncode = cpu_to_le16(reason);
1407
1408         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1409         if (ret)
1410                 return ret;
1411
1412         cfg80211_disconnected(priv->dev,
1413                         reason,
1414                         NULL, 0, true,
1415                         GFP_KERNEL);
1416         priv->connect_status = LBS_DISCONNECTED;
1417
1418         return 0;
1419 }
1420
1421 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1422         u16 reason_code)
1423 {
1424         struct lbs_private *priv = wiphy_priv(wiphy);
1425
1426         if (dev == priv->mesh_dev)
1427                 return -EOPNOTSUPP;
1428
1429         /* store for lbs_cfg_ret_disconnect() */
1430         priv->disassoc_reason = reason_code;
1431
1432         return lbs_disconnect(priv, reason_code);
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         if (netdev == priv->mesh_dev)
1443                 return -EOPNOTSUPP;
1444
1445         if (key_index != priv->wep_tx_key) {
1446                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1447                 priv->wep_tx_key = key_index;
1448                 lbs_set_wep_keys(priv);
1449         }
1450
1451         return 0;
1452 }
1453
1454
1455 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1456                            u8 idx, bool pairwise, const u8 *mac_addr,
1457                            struct key_params *params)
1458 {
1459         struct lbs_private *priv = wiphy_priv(wiphy);
1460         u16 key_info;
1461         u16 key_type;
1462         int ret = 0;
1463
1464         if (netdev == priv->mesh_dev)
1465                 return -EOPNOTSUPP;
1466
1467         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1468                       params->cipher, mac_addr);
1469         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1470                       idx, params->key_len);
1471         if (params->key_len)
1472                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1473                             params->key, params->key_len);
1474
1475         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1476         if (params->seq_len)
1477                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1478                             params->seq, params->seq_len);
1479
1480         switch (params->cipher) {
1481         case WLAN_CIPHER_SUITE_WEP40:
1482         case WLAN_CIPHER_SUITE_WEP104:
1483                 /* actually compare if something has changed ... */
1484                 if ((priv->wep_key_len[idx] != params->key_len) ||
1485                         memcmp(priv->wep_key[idx],
1486                                params->key, params->key_len) != 0) {
1487                         priv->wep_key_len[idx] = params->key_len;
1488                         memcpy(priv->wep_key[idx],
1489                                params->key, params->key_len);
1490                         lbs_set_wep_keys(priv);
1491                 }
1492                 break;
1493         case WLAN_CIPHER_SUITE_TKIP:
1494         case WLAN_CIPHER_SUITE_CCMP:
1495                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1496                                                    ? KEY_INFO_WPA_UNICAST
1497                                                    : KEY_INFO_WPA_MCAST);
1498                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1499                         ? KEY_TYPE_ID_TKIP
1500                         : KEY_TYPE_ID_AES;
1501                 lbs_set_key_material(priv,
1502                                      key_type,
1503                                      key_info,
1504                                      params->key, params->key_len);
1505                 break;
1506         default:
1507                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1508                 ret = -ENOTSUPP;
1509                 break;
1510         }
1511
1512         return ret;
1513 }
1514
1515
1516 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1517                            u8 key_index, bool pairwise, const u8 *mac_addr)
1518 {
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                                const 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         sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) |
1563                          BIT(NL80211_STA_INFO_TX_PACKETS) |
1564                          BIT(NL80211_STA_INFO_RX_BYTES) |
1565                          BIT(NL80211_STA_INFO_RX_PACKETS);
1566         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1567         sinfo->tx_packets = priv->dev->stats.tx_packets;
1568         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1569         sinfo->rx_packets = priv->dev->stats.rx_packets;
1570
1571         /* Get current RSSI */
1572         ret = lbs_get_rssi(priv, &signal, &noise);
1573         if (ret == 0) {
1574                 sinfo->signal = signal;
1575                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1576         }
1577
1578         /* Convert priv->cur_rate from hw_value to NL80211 value */
1579         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1580                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1581                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1582                         sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1583                         break;
1584                 }
1585         }
1586
1587         return 0;
1588 }
1589
1590
1591
1592
1593 /*
1594  * Change interface
1595  */
1596
1597 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1598         enum nl80211_iftype type,
1599                struct vif_params *params)
1600 {
1601         struct lbs_private *priv = wiphy_priv(wiphy);
1602         int ret = 0;
1603
1604         if (dev == priv->mesh_dev)
1605                 return -EOPNOTSUPP;
1606
1607         switch (type) {
1608         case NL80211_IFTYPE_MONITOR:
1609         case NL80211_IFTYPE_STATION:
1610         case NL80211_IFTYPE_ADHOC:
1611                 break;
1612         default:
1613                 return -EOPNOTSUPP;
1614         }
1615
1616         if (priv->iface_running)
1617                 ret = lbs_set_iface_type(priv, type);
1618
1619         if (!ret)
1620                 priv->wdev->iftype = type;
1621
1622         return ret;
1623 }
1624
1625
1626
1627 /*
1628  * IBSS (Ad-Hoc)
1629  */
1630
1631 /*
1632  * The firmware needs the following bits masked out of the beacon-derived
1633  * capability field when associating/joining to a BSS:
1634  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1635  */
1636 #define CAPINFO_MASK (~(0xda00))
1637
1638
1639 static void lbs_join_post(struct lbs_private *priv,
1640                           struct cfg80211_ibss_params *params,
1641                           u8 *bssid, u16 capability)
1642 {
1643         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1644                    2 + 4 +                      /* basic rates */
1645                    2 + 1 +                      /* DS parameter */
1646                    2 + 2 +                      /* atim */
1647                    2 + 8];                      /* extended rates */
1648         u8 *fake = fake_ie;
1649         struct cfg80211_bss *bss;
1650
1651         /*
1652          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1653          * the real IE from the firmware. So we fabricate a fake IE based on
1654          * what the firmware actually sends (sniffed with wireshark).
1655          */
1656         /* Fake SSID IE */
1657         *fake++ = WLAN_EID_SSID;
1658         *fake++ = params->ssid_len;
1659         memcpy(fake, params->ssid, params->ssid_len);
1660         fake += params->ssid_len;
1661         /* Fake supported basic rates IE */
1662         *fake++ = WLAN_EID_SUPP_RATES;
1663         *fake++ = 4;
1664         *fake++ = 0x82;
1665         *fake++ = 0x84;
1666         *fake++ = 0x8b;
1667         *fake++ = 0x96;
1668         /* Fake DS channel IE */
1669         *fake++ = WLAN_EID_DS_PARAMS;
1670         *fake++ = 1;
1671         *fake++ = params->chandef.chan->hw_value;
1672         /* Fake IBSS params IE */
1673         *fake++ = WLAN_EID_IBSS_PARAMS;
1674         *fake++ = 2;
1675         *fake++ = 0; /* ATIM=0 */
1676         *fake++ = 0;
1677         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1678          * but I don't know how this could be checked */
1679         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1680         *fake++ = 8;
1681         *fake++ = 0x0c;
1682         *fake++ = 0x12;
1683         *fake++ = 0x18;
1684         *fake++ = 0x24;
1685         *fake++ = 0x30;
1686         *fake++ = 0x48;
1687         *fake++ = 0x60;
1688         *fake++ = 0x6c;
1689         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1690
1691         bss = cfg80211_inform_bss(priv->wdev->wiphy,
1692                                   params->chandef.chan,
1693                                   CFG80211_BSS_FTYPE_UNKNOWN,
1694                                   bssid,
1695                                   0,
1696                                   capability,
1697                                   params->beacon_interval,
1698                                   fake_ie, fake - fake_ie,
1699                                   0, GFP_KERNEL);
1700         cfg80211_put_bss(priv->wdev->wiphy, bss);
1701
1702         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1703         priv->wdev->ssid_len = params->ssid_len;
1704
1705         cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1706                              GFP_KERNEL);
1707
1708         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1709         priv->connect_status = LBS_CONNECTED;
1710         netif_carrier_on(priv->dev);
1711         if (!priv->tx_pending_len)
1712                 netif_wake_queue(priv->dev);
1713 }
1714
1715 static int lbs_ibss_join_existing(struct lbs_private *priv,
1716         struct cfg80211_ibss_params *params,
1717         struct cfg80211_bss *bss)
1718 {
1719         const u8 *rates_eid;
1720         struct cmd_ds_802_11_ad_hoc_join cmd;
1721         u8 preamble = RADIO_PREAMBLE_SHORT;
1722         int ret = 0;
1723
1724         /* TODO: set preamble based on scan result */
1725         ret = lbs_set_radio(priv, preamble, 1);
1726         if (ret)
1727                 goto out;
1728
1729         /*
1730          * Example CMD_802_11_AD_HOC_JOIN command:
1731          *
1732          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1733          * size            65 00
1734          * sequence        xx xx
1735          * result          00 00
1736          * bssid           02 27 27 97 2f 96
1737          * ssid            49 42 53 53 00 00 00 00
1738          *                 00 00 00 00 00 00 00 00
1739          *                 00 00 00 00 00 00 00 00
1740          *                 00 00 00 00 00 00 00 00
1741          * type            02            CMD_BSS_TYPE_IBSS
1742          * beacon period   64 00
1743          * dtim period     00
1744          * timestamp       00 00 00 00 00 00 00 00
1745          * localtime       00 00 00 00 00 00 00 00
1746          * IE DS           03
1747          * IE DS len       01
1748          * IE DS channel   01
1749          * reserveed       00 00 00 00
1750          * IE IBSS         06
1751          * IE IBSS len     02
1752          * IE IBSS atim    00 00
1753          * reserved        00 00 00 00
1754          * capability      02 00
1755          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1756          * fail timeout    ff 00
1757          * probe delay     00 00
1758          */
1759         memset(&cmd, 0, sizeof(cmd));
1760         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1761
1762         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1763         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1764         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1765         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1766         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1767         cmd.bss.ds.header.len = 1;
1768         cmd.bss.ds.channel = params->chandef.chan->hw_value;
1769         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1770         cmd.bss.ibss.header.len = 2;
1771         cmd.bss.ibss.atimwindow = 0;
1772         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1773
1774         /* set rates to the intersection of our rates and the rates in the
1775            bss */
1776         rcu_read_lock();
1777         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1778         if (!rates_eid) {
1779                 lbs_add_rates(cmd.bss.rates);
1780         } else {
1781                 int hw, i;
1782                 u8 rates_max = rates_eid[1];
1783                 u8 *rates = cmd.bss.rates;
1784                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1785                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1786                         for (i = 0; i < rates_max; i++) {
1787                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1788                                         u8 rate = rates_eid[i+2];
1789                                         if (rate == 0x02 || rate == 0x04 ||
1790                                             rate == 0x0b || rate == 0x16)
1791                                                 rate |= 0x80;
1792                                         *rates++ = rate;
1793                                 }
1794                         }
1795                 }
1796         }
1797         rcu_read_unlock();
1798
1799         /* Only v8 and below support setting this */
1800         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1801                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1802                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1803         }
1804         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1805         if (ret)
1806                 goto out;
1807
1808         /*
1809          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1810          *
1811          * response        2c 80
1812          * size            09 00
1813          * sequence        xx xx
1814          * result          00 00
1815          * reserved        00
1816          */
1817         lbs_join_post(priv, params, bss->bssid, bss->capability);
1818
1819  out:
1820         return ret;
1821 }
1822
1823
1824
1825 static int lbs_ibss_start_new(struct lbs_private *priv,
1826         struct cfg80211_ibss_params *params)
1827 {
1828         struct cmd_ds_802_11_ad_hoc_start cmd;
1829         struct cmd_ds_802_11_ad_hoc_result *resp =
1830                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1831         u8 preamble = RADIO_PREAMBLE_SHORT;
1832         int ret = 0;
1833         u16 capability;
1834
1835         ret = lbs_set_radio(priv, preamble, 1);
1836         if (ret)
1837                 goto out;
1838
1839         /*
1840          * Example CMD_802_11_AD_HOC_START command:
1841          *
1842          * command         2b 00         CMD_802_11_AD_HOC_START
1843          * size            b1 00
1844          * sequence        xx xx
1845          * result          00 00
1846          * ssid            54 45 53 54 00 00 00 00
1847          *                 00 00 00 00 00 00 00 00
1848          *                 00 00 00 00 00 00 00 00
1849          *                 00 00 00 00 00 00 00 00
1850          * bss type        02
1851          * beacon period   64 00
1852          * dtim period     00
1853          * IE IBSS         06
1854          * IE IBSS len     02
1855          * IE IBSS atim    00 00
1856          * reserved        00 00 00 00
1857          * IE DS           03
1858          * IE DS len       01
1859          * IE DS channel   01
1860          * reserved        00 00 00 00
1861          * probe delay     00 00
1862          * capability      02 00
1863          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1864          *                 0c 12 18 24 30 48 60 6c
1865          * padding         100 bytes
1866          */
1867         memset(&cmd, 0, sizeof(cmd));
1868         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1869         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1870         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1871         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1872         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1873         cmd.ibss.header.len = 2;
1874         cmd.ibss.atimwindow = 0;
1875         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1876         cmd.ds.header.len = 1;
1877         cmd.ds.channel = params->chandef.chan->hw_value;
1878         /* Only v8 and below support setting probe delay */
1879         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1880                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1881         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1882         capability = WLAN_CAPABILITY_IBSS;
1883         cmd.capability = cpu_to_le16(capability);
1884         lbs_add_rates(cmd.rates);
1885
1886
1887         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1888         if (ret)
1889                 goto out;
1890
1891         /*
1892          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1893          *
1894          * response        2b 80
1895          * size            14 00
1896          * sequence        xx xx
1897          * result          00 00
1898          * reserved        00
1899          * bssid           02 2b 7b 0f 86 0e
1900          */
1901         lbs_join_post(priv, params, resp->bssid, capability);
1902
1903  out:
1904         return ret;
1905 }
1906
1907
1908 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1909                 struct cfg80211_ibss_params *params)
1910 {
1911         struct lbs_private *priv = wiphy_priv(wiphy);
1912         int ret = 0;
1913         struct cfg80211_bss *bss;
1914
1915         if (dev == priv->mesh_dev)
1916                 return -EOPNOTSUPP;
1917
1918         if (!params->chandef.chan) {
1919                 ret = -ENOTSUPP;
1920                 goto out;
1921         }
1922
1923         ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1924         if (ret)
1925                 goto out;
1926
1927         /* Search if someone is beaconing. This assumes that the
1928          * bss list is populated already */
1929         bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1930                 params->ssid, params->ssid_len,
1931                 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1932
1933         if (bss) {
1934                 ret = lbs_ibss_join_existing(priv, params, bss);
1935                 cfg80211_put_bss(wiphy, bss);
1936         } else
1937                 ret = lbs_ibss_start_new(priv, params);
1938
1939
1940  out:
1941         return ret;
1942 }
1943
1944
1945 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1946 {
1947         struct lbs_private *priv = wiphy_priv(wiphy);
1948         struct cmd_ds_802_11_ad_hoc_stop cmd;
1949         int ret = 0;
1950
1951         if (dev == priv->mesh_dev)
1952                 return -EOPNOTSUPP;
1953
1954         memset(&cmd, 0, sizeof(cmd));
1955         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1956         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1957
1958         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1959         lbs_mac_event_disconnected(priv, true);
1960
1961         return ret;
1962 }
1963
1964
1965
1966 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1967                               bool enabled, int timeout)
1968 {
1969         struct lbs_private *priv = wiphy_priv(wiphy);
1970
1971         if  (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
1972                 if (!enabled)
1973                         return 0;
1974                 else
1975                         return -EINVAL;
1976         }
1977         /* firmware does not work well with too long latency with power saving
1978          * enabled, so do not enable it if there is only polling, no
1979          * interrupts (like in some sdio hosts which can only
1980          * poll for sdio irqs)
1981          */
1982         if  (priv->is_polling) {
1983                 if (!enabled)
1984                         return 0;
1985                 else
1986                         return -EINVAL;
1987         }
1988         if (!enabled) {
1989                 priv->psmode = LBS802_11POWERMODECAM;
1990                 if (priv->psstate != PS_STATE_FULL_POWER)
1991                         lbs_set_ps_mode(priv,
1992                                         PS_MODE_ACTION_EXIT_PS,
1993                                         true);
1994                 return 0;
1995         }
1996         if (priv->psmode != LBS802_11POWERMODECAM)
1997                 return 0;
1998         priv->psmode = LBS802_11POWERMODEMAX_PSP;
1999         if (priv->connect_status == LBS_CONNECTED)
2000                 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2001         return 0;
2002 }
2003
2004 /*
2005  * Initialization
2006  */
2007
2008 static const struct cfg80211_ops lbs_cfg80211_ops = {
2009         .set_monitor_channel = lbs_cfg_set_monitor_channel,
2010         .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2011         .scan = lbs_cfg_scan,
2012         .connect = lbs_cfg_connect,
2013         .disconnect = lbs_cfg_disconnect,
2014         .add_key = lbs_cfg_add_key,
2015         .del_key = lbs_cfg_del_key,
2016         .set_default_key = lbs_cfg_set_default_key,
2017         .get_station = lbs_cfg_get_station,
2018         .change_virtual_intf = lbs_change_intf,
2019         .join_ibss = lbs_join_ibss,
2020         .leave_ibss = lbs_leave_ibss,
2021         .set_power_mgmt = lbs_set_power_mgmt,
2022 };
2023
2024
2025 /*
2026  * At this time lbs_private *priv doesn't even exist, so we just allocate
2027  * memory and don't initialize the wiphy further. This is postponed until we
2028  * can talk to the firmware and happens at registration time in
2029  * lbs_cfg_wiphy_register().
2030  */
2031 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2032 {
2033         int ret = 0;
2034         struct wireless_dev *wdev;
2035
2036         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2037         if (!wdev)
2038                 return ERR_PTR(-ENOMEM);
2039
2040         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2041         if (!wdev->wiphy) {
2042                 dev_err(dev, "cannot allocate wiphy\n");
2043                 ret = -ENOMEM;
2044                 goto err_wiphy_new;
2045         }
2046
2047         return wdev;
2048
2049  err_wiphy_new:
2050         kfree(wdev);
2051         return ERR_PTR(ret);
2052 }
2053
2054
2055 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2056 {
2057         struct region_code_mapping {
2058                 const char *cn;
2059                 int code;
2060         };
2061
2062         /* Section 5.17.2 */
2063         static const struct region_code_mapping regmap[] = {
2064                 {"US ", 0x10}, /* US FCC */
2065                 {"CA ", 0x20}, /* Canada */
2066                 {"EU ", 0x30}, /* ETSI   */
2067                 {"ES ", 0x31}, /* Spain  */
2068                 {"FR ", 0x32}, /* France */
2069                 {"JP ", 0x40}, /* Japan  */
2070         };
2071         size_t i;
2072
2073         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2074                 if (regmap[i].code == priv->regioncode) {
2075                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2076                         break;
2077                 }
2078 }
2079
2080 static void lbs_reg_notifier(struct wiphy *wiphy,
2081                              struct regulatory_request *request)
2082 {
2083         struct lbs_private *priv = wiphy_priv(wiphy);
2084
2085         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2086         if (lbs_iface_active(priv))
2087                 lbs_set_11d_domain_info(priv);
2088 }
2089
2090 /*
2091  * This function get's called after lbs_setup_firmware() determined the
2092  * firmware capabities. So we can setup the wiphy according to our
2093  * hardware/firmware.
2094  */
2095 int lbs_cfg_register(struct lbs_private *priv)
2096 {
2097         struct wireless_dev *wdev = priv->wdev;
2098         int ret;
2099
2100         wdev->wiphy->max_scan_ssids = 1;
2101         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2102
2103         wdev->wiphy->interface_modes =
2104                         BIT(NL80211_IFTYPE_STATION) |
2105                         BIT(NL80211_IFTYPE_ADHOC);
2106         if (lbs_rtap_supported(priv))
2107                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2108         if (lbs_mesh_activated(priv))
2109                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2110
2111         wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2112
2113         /*
2114          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2115          * never seen a firmware without WPA
2116          */
2117         wdev->wiphy->cipher_suites = cipher_suites;
2118         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2119         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2120
2121         ret = wiphy_register(wdev->wiphy);
2122         if (ret < 0)
2123                 pr_err("cannot register wiphy device\n");
2124
2125         priv->wiphy_registered = true;
2126
2127         ret = register_netdev(priv->dev);
2128         if (ret)
2129                 pr_err("cannot register network device\n");
2130
2131         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2132
2133         lbs_cfg_set_regulatory_hint(priv);
2134
2135         return ret;
2136 }
2137
2138 void lbs_scan_deinit(struct lbs_private *priv)
2139 {
2140         cancel_delayed_work_sync(&priv->scan_work);
2141 }
2142
2143
2144 void lbs_cfg_free(struct lbs_private *priv)
2145 {
2146         struct wireless_dev *wdev = priv->wdev;
2147
2148         if (!wdev)
2149                 return;
2150
2151         if (priv->wiphy_registered)
2152                 wiphy_unregister(wdev->wiphy);
2153
2154         if (wdev->wiphy)
2155                 wiphy_free(wdev->wiphy);
2156
2157         kfree(wdev);
2158 }