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 #include "mesh.h"
  23
  24
  25 #define CHAN2G(_channel, _freq, _flags) {        \
  26         .band             = NL80211_BAND_2GHZ, \
  27         .center_freq      = (_freq),             \
  28         .hw_value         = (_channel),          \
  29         .flags            = (_flags),            \
  30         .max_antenna_gain = 0,                   \
  31         .max_power        = 30,                  \
  32 }
  33
  34 static struct ieee80211_channel lbs_2ghz_channels[] = {
  35         CHAN2G(1,  2412, 0),
  36         CHAN2G(2,  2417, 0),
  37         CHAN2G(3,  2422, 0),
  38         CHAN2G(4,  2427, 0),
  39         CHAN2G(5,  2432, 0),
  40         CHAN2G(6,  2437, 0),
  41         CHAN2G(7,  2442, 0),
  42         CHAN2G(8,  2447, 0),
  43         CHAN2G(9,  2452, 0),
  44         CHAN2G(10, 2457, 0),
  45         CHAN2G(11, 2462, 0),
  46         CHAN2G(12, 2467, 0),
  47         CHAN2G(13, 2472, 0),
  48         CHAN2G(14, 2484, 0),
  49 };
  50
  51 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  52         .bitrate  = (_rate),                    \
  53         .hw_value = (_hw_value),                \
  54         .flags    = (_flags),                   \
  55 }
  56
  57
  58 /* Table 6 in section 3.2.1.1 */
  59 static struct ieee80211_rate lbs_rates[] = {
  60         RATETAB_ENT(10,  0,  0),
  61         RATETAB_ENT(20,  1,  0),
  62         RATETAB_ENT(55,  2,  0),
  63         RATETAB_ENT(110, 3,  0),
  64         RATETAB_ENT(60,  9,  0),
  65         RATETAB_ENT(90,  6,  0),
  66         RATETAB_ENT(120, 7,  0),
  67         RATETAB_ENT(180, 8,  0),
  68         RATETAB_ENT(240, 9,  0),
  69         RATETAB_ENT(360, 10, 0),
  70         RATETAB_ENT(480, 11, 0),
  71         RATETAB_ENT(540, 12, 0),
  72 };
  73
  74 static struct ieee80211_supported_band lbs_band_2ghz = {
  75         .channels = lbs_2ghz_channels,
  76         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  77         .bitrates = lbs_rates,
  78         .n_bitrates = ARRAY_SIZE(lbs_rates),
  79 };
  80
  81
  82 static const u32 cipher_suites[] = {
  83         WLAN_CIPHER_SUITE_WEP40,
  84         WLAN_CIPHER_SUITE_WEP104,
  85         WLAN_CIPHER_SUITE_TKIP,
  86         WLAN_CIPHER_SUITE_CCMP,
  87 };
  88
  89 /* Time to stay on the channel */
  90 #define LBS_DWELL_PASSIVE 100
  91 #define LBS_DWELL_ACTIVE  40
  92
  93
  94 /***************************************************************************
  95  * Misc utility functions
  96  *
  97  * TLVs are Marvell specific. They are very similar to IEs, they have the
  98  * same structure: type, length, data*. The only difference: for IEs, the
  99  * type and length are u8, but for TLVs they're __le16.
 100  */
 101
 102 /*
 103  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
 104  * in the firmware spec
 105  */
 106 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 107 {
 108         int ret = -ENOTSUPP;
 109
 110         switch (auth_type) {
 111         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 112         case NL80211_AUTHTYPE_SHARED_KEY:
 113                 ret = auth_type;
 114                 break;
 115         case NL80211_AUTHTYPE_AUTOMATIC:
 116                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 117                 break;
 118         case NL80211_AUTHTYPE_NETWORK_EAP:
 119                 ret = 0x80;
 120                 break;
 121         default:
 122                 /* silence compiler */
 123                 break;
 124         }
 125         return ret;
 126 }
 127
 128
 129 /*
 130  * Various firmware commands need the list of supported rates, but with
 131  * the hight-bit set for basic rates
 132  */
 133 static int lbs_add_rates(u8 *rates)
 134 {
 135         size_t i;
 136
 137         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 138                 u8 rate = lbs_rates[i].bitrate / 5;
 139                 if (rate == 0x02 || rate == 0x04 ||
 140                     rate == 0x0b || rate == 0x16)
 141                         rate |= 0x80;
 142                 rates[i] = rate;
 143         }
 144         return ARRAY_SIZE(lbs_rates);
 145 }
 146
 147
 148 /***************************************************************************
 149  * TLV utility functions
 150  *
 151  * TLVs are Marvell specific. They are very similar to IEs, they have the
 152  * same structure: type, length, data*. The only difference: for IEs, the
 153  * type and length are u8, but for TLVs they're __le16.
 154  */
 155
 156
 157 /*
 158  * Add ssid TLV
 159  */
 160 #define LBS_MAX_SSID_TLV_SIZE                   \
 161         (sizeof(struct mrvl_ie_header)          \
 162          + IEEE80211_MAX_SSID_LEN)
 163
 164 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 165 {
 166         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 167
 168         /*
 169          * TLV-ID SSID  00 00
 170          * length       06 00
 171          * ssid         4d 4e 54 45 53 54
 172          */
 173         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 174         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 175         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 176         return sizeof(ssid_tlv->header) + ssid_len;
 177 }
 178
 179
 180 /*
 181  * Add channel list TLV (section 8.4.2)
 182  *
 183  * Actual channel data comes from priv->wdev->wiphy->channels.
 184  */
 185 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 186         (sizeof(struct mrvl_ie_header)                                  \
 187          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 188
 189 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 190                                     int last_channel, int active_scan)
 191 {
 192         int chanscanparamsize = sizeof(struct chanscanparamset) *
 193                 (last_channel - priv->scan_channel);
 194
 195         struct mrvl_ie_header *header = (void *) tlv;
 196
 197         /*
 198          * TLV-ID CHANLIST  01 01
 199          * length           0e 00
 200          * channel          00 01 00 00 00 64 00
 201          *   radio type     00
 202          *   channel           01
 203          *   scan type            00
 204          *   min scan time           00 00
 205          *   max scan time                 64 00
 206          * channel 2        00 02 00 00 00 64 00
 207          *
 208          */
 209
 210         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 211         header->len  = cpu_to_le16(chanscanparamsize);
 212         tlv += sizeof(struct mrvl_ie_header);
 213
 214         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 215                      last_channel); */
 216         memset(tlv, 0, chanscanparamsize);
 217
 218         while (priv->scan_channel < last_channel) {
 219                 struct chanscanparamset *param = (void *) tlv;
 220
 221                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 222                 param->channumber =
 223                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 224                 if (active_scan) {
 225                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 226                 } else {
 227                         param->chanscanmode.passivescan = 1;
 228                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 229                 }
 230                 tlv += sizeof(struct chanscanparamset);
 231                 priv->scan_channel++;
 232         }
 233         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 234 }
 235
 236
 237 /*
 238  * Add rates TLV
 239  *
 240  * The rates are in lbs_bg_rates[], but for the 802.11b
 241  * rates the high bit is set. We add this TLV only because
 242  * there's a firmware which otherwise doesn't report all
 243  * APs in range.
 244  */
 245 #define LBS_MAX_RATES_TLV_SIZE                  \
 246         (sizeof(struct mrvl_ie_header)          \
 247          + (ARRAY_SIZE(lbs_rates)))
 248
 249 /* Adds a TLV with all rates the hardware supports */
 250 static int lbs_add_supported_rates_tlv(u8 *tlv)
 251 {
 252         size_t i;
 253         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 254
 255         /*
 256          * TLV-ID RATES  01 00
 257          * length        0e 00
 258          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 259          */
 260         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 261         tlv += sizeof(rate_tlv->header);
 262         i = lbs_add_rates(tlv);
 263         tlv += i;
 264         rate_tlv->header.len = cpu_to_le16(i);
 265         return sizeof(rate_tlv->header) + i;
 266 }
 267
 268 /* Add common rates from a TLV and return the new end of the TLV */
 269 static u8 *
 270 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 271 {
 272         int hw, ap, ap_max = ie[1];
 273         u8 hw_rate;
 274
 275         if (ap_max > MAX_RATES) {
 276                 lbs_deb_assoc("invalid rates\n");
 277                 return tlv;
 278         }
 279         /* Advance past IE header */
 280         ie += 2;
 281
 282         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 283
 284         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 285                 hw_rate = lbs_rates[hw].bitrate / 5;
 286                 for (ap = 0; ap < ap_max; ap++) {
 287                         if (hw_rate == (ie[ap] & 0x7f)) {
 288                                 *tlv++ = ie[ap];
 289                                 *nrates = *nrates + 1;
 290                         }
 291                 }
 292         }
 293         return tlv;
 294 }
 295
 296 /*
 297  * Adds a TLV with all rates the hardware *and* BSS supports.
 298  */
 299 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 300 {
 301         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 302         const u8 *rates_eid, *ext_rates_eid;
 303         int n = 0;
 304
 305         rcu_read_lock();
 306         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 307         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 308
 309         /*
 310          * 01 00                   TLV_TYPE_RATES
 311          * 04 00                   len
 312          * 82 84 8b 96             rates
 313          */
 314         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 315         tlv += sizeof(rate_tlv->header);
 316
 317         /* Add basic rates */
 318         if (rates_eid) {
 319                 tlv = add_ie_rates(tlv, rates_eid, &n);
 320
 321                 /* Add extended rates, if any */
 322                 if (ext_rates_eid)
 323                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 324         } else {
 325                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 326                 /* Fallback: add basic 802.11b rates */
 327                 *tlv++ = 0x82;
 328                 *tlv++ = 0x84;
 329                 *tlv++ = 0x8b;
 330                 *tlv++ = 0x96;
 331                 n = 4;
 332         }
 333         rcu_read_unlock();
 334
 335         rate_tlv->header.len = cpu_to_le16(n);
 336         return sizeof(rate_tlv->header) + n;
 337 }
 338
 339
 340 /*
 341  * Add auth type TLV.
 342  *
 343  * This is only needed for newer firmware (V9 and up).
 344  */
 345 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 346         sizeof(struct mrvl_ie_auth_type)
 347
 348 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 349 {
 350         struct mrvl_ie_auth_type *auth = (void *) tlv;
 351
 352         /*
 353          * 1f 01  TLV_TYPE_AUTH_TYPE
 354          * 01 00  len
 355          * 01     auth type
 356          */
 357         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 358         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 359         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 360         return sizeof(*auth);
 361 }
 362
 363
 364 /*
 365  * Add channel (phy ds) TLV
 366  */
 367 #define LBS_MAX_CHANNEL_TLV_SIZE \
 368         sizeof(struct mrvl_ie_header)
 369
 370 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 371 {
 372         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 373
 374         /*
 375          * 03 00  TLV_TYPE_PHY_DS
 376          * 01 00  len
 377          * 06     channel
 378          */
 379         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 380         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 381         ds->channel = channel;
 382         return sizeof(*ds);
 383 }
 384
 385
 386 /*
 387  * Add (empty) CF param TLV of the form:
 388  */
 389 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 390         sizeof(struct mrvl_ie_header)
 391
 392 static int lbs_add_cf_param_tlv(u8 *tlv)
 393 {
 394         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 395
 396         /*
 397          * 04 00  TLV_TYPE_CF
 398          * 06 00  len
 399          * 00     cfpcnt
 400          * 00     cfpperiod
 401          * 00 00  cfpmaxduration
 402          * 00 00  cfpdurationremaining
 403          */
 404         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 405         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 406         return sizeof(*cf);
 407 }
 408
 409 /*
 410  * Add WPA TLV
 411  */
 412 #define LBS_MAX_WPA_TLV_SIZE                    \
 413         (sizeof(struct mrvl_ie_header)          \
 414          + 128 /* TODO: I guessed the size */)
 415
 416 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 417 {
 418         size_t tlv_len;
 419
 420         /*
 421          * We need just convert an IE to an TLV. IEs use u8 for the header,
 422          *   u8      type
 423          *   u8      len
 424          *   u8[]    data
 425          * but TLVs use __le16 instead:
 426          *   __le16  type
 427          *   __le16  len
 428          *   u8[]    data
 429          */
 430         *tlv++ = *ie++;
 431         *tlv++ = 0;
 432         tlv_len = *tlv++ = *ie++;
 433         *tlv++ = 0;
 434         while (tlv_len--)
 435                 *tlv++ = *ie++;
 436         /* the TLV is two bytes larger than the IE */
 437         return ie_len + 2;
 438 }
 439
 440 /*
 441  * Set Channel
 442  */
 443
 444 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
 445                                        struct cfg80211_chan_def *chandef)
 446 {
 447         struct lbs_private *priv = wiphy_priv(wiphy);
 448         int ret = -ENOTSUPP;
 449
 450         lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d",
 451                            chandef->chan->center_freq,
 452                            cfg80211_get_chandef_type(chandef));
 453
 454         if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
 455                 goto out;
 456
 457         ret = lbs_set_channel(priv, chandef->chan->hw_value);
 458
 459  out:
 460         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 461         return ret;
 462 }
 463
 464 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
 465                                     struct net_device *netdev,
 466                                     struct ieee80211_channel *channel)
 467 {
 468         struct lbs_private *priv = wiphy_priv(wiphy);
 469         int ret = -ENOTSUPP;
 470
 471         lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d",
 472                            netdev_name(netdev), channel->center_freq);
 473
 474         if (netdev != priv->mesh_dev)
 475                 goto out;
 476
 477         ret = lbs_mesh_set_channel(priv, channel->hw_value);
 478
 479  out:
 480         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 481         return ret;
 482 }
 483
 484
 485
 486 /*
 487  * Scanning
 488  */
 489
 490 /*
 491  * When scanning, the firmware doesn't send a nul packet with the power-safe
 492  * bit to the AP. So we cannot stay away from our current channel too long,
 493  * otherwise we loose data. So take a "nap" while scanning every other
 494  * while.
 495  */
 496 #define LBS_SCAN_BEFORE_NAP 4
 497
 498
 499 /*
 500  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 501  * which isn't really an RSSI, as it becomes larger when moving away from
 502  * the AP. Anyway, we need to convert that into mBm.
 503  */
 504 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 505         ((-(int)rssi + 3)*100)
 506
 507 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 508         struct cmd_header *resp)
 509 {
 510         struct cfg80211_bss *bss;
 511         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 512         int bsssize;
 513         const u8 *pos;
 514         const u8 *tsfdesc;
 515         int tsfsize;
 516         int i;
 517         int ret = -EILSEQ;
 518
 519         lbs_deb_enter(LBS_DEB_CFG80211);
 520
 521         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 522
 523         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 524                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 525
 526         if (scanresp->nr_sets == 0) {
 527                 ret = 0;
 528                 goto done;
 529         }
 530
 531         /*
 532          * The general layout of the scan response is described in chapter
 533          * 5.7.1. Basically we have a common part, then any number of BSS
 534          * descriptor sections. Finally we have section with the same number
 535          * of TSFs.
 536          *
 537          * cmd_ds_802_11_scan_rsp
 538          *   cmd_header
 539          *   pos_size
 540          *   nr_sets
 541          *   bssdesc 1
 542          *     bssid
 543          *     rssi
 544          *     timestamp
 545          *     intvl
 546          *     capa
 547          *     IEs
 548          *   bssdesc 2
 549          *   bssdesc n
 550          *   MrvlIEtypes_TsfFimestamp_t
 551          *     TSF for BSS 1
 552          *     TSF for BSS 2
 553          *     TSF for BSS n
 554          */
 555
 556         pos = scanresp->bssdesc_and_tlvbuffer;
 557
 558         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 559                         scanresp->bssdescriptsize);
 560
 561         tsfdesc = pos + bsssize;
 562         tsfsize = 4 + 8 * scanresp->nr_sets;
 563         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 564
 565         /* Validity check: we expect a Marvell-Local TLV */
 566         i = get_unaligned_le16(tsfdesc);
 567         tsfdesc += 2;
 568         if (i != TLV_TYPE_TSFTIMESTAMP) {
 569                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 570                 goto done;
 571         }
 572
 573         /*
 574          * Validity check: the TLV holds TSF values with 8 bytes each, so
 575          * the size in the TLV must match the nr_sets value
 576          */
 577         i = get_unaligned_le16(tsfdesc);
 578         tsfdesc += 2;
 579         if (i / 8 != scanresp->nr_sets) {
 580                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 581                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 582                              i / 8);
 583                 goto done;
 584         }
 585
 586         for (i = 0; i < scanresp->nr_sets; i++) {
 587                 const u8 *bssid;
 588                 const u8 *ie;
 589                 int left;
 590                 int ielen;
 591                 int rssi;
 592                 u16 intvl;
 593                 u16 capa;
 594                 int chan_no = -1;
 595                 const u8 *ssid = NULL;
 596                 u8 ssid_len = 0;
 597
 598                 int len = get_unaligned_le16(pos);
 599                 pos += 2;
 600
 601                 /* BSSID */
 602                 bssid = pos;
 603                 pos += ETH_ALEN;
 604                 /* RSSI */
 605                 rssi = *pos++;
 606                 /* Packet time stamp */
 607                 pos += 8;
 608                 /* Beacon interval */
 609                 intvl = get_unaligned_le16(pos);
 610                 pos += 2;
 611                 /* Capabilities */
 612                 capa = get_unaligned_le16(pos);
 613                 pos += 2;
 614
 615                 /* To find out the channel, we must parse the IEs */
 616                 ie = pos;
 617                 /*
 618                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 619                  * interval, capabilities
 620                  */
 621                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 622                 while (left >= 2) {
 623                         u8 id, elen;
 624                         id = *pos++;
 625                         elen = *pos++;
 626                         left -= 2;
 627                         if (elen > left) {
 628                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 629                                 goto done;
 630                         }
 631
 632                         if (id == WLAN_EID_DS_PARAMS)
 633                                 chan_no = *pos;
 634                         if (id == WLAN_EID_SSID) {
 635                                 ssid = pos;
 636                                 ssid_len = elen;
 637                         }
 638                         left -= elen;
 639                         pos += elen;
 640                 }
 641
 642                 /* No channel, no luck */
 643                 if (chan_no != -1) {
 644                         struct wiphy *wiphy = priv->wdev->wiphy;
 645                         int freq = ieee80211_channel_to_frequency(chan_no,
 646                                                         NL80211_BAND_2GHZ);
 647                         struct ieee80211_channel *channel =
 648                                 ieee80211_get_channel(wiphy, freq);
 649
 650                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
 651                                      bssid, capa, chan_no, ssid_len, ssid,
 652                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 653
 654                         if (channel &&
 655                             !(channel->flags & IEEE80211_CHAN_DISABLED)) {
 656                                 bss = cfg80211_inform_bss(wiphy, channel,
 657                                         CFG80211_BSS_FTYPE_UNKNOWN,
 658                                         bssid, get_unaligned_le64(tsfdesc),
 659                                         capa, intvl, ie, ielen,
 660                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 661                                         GFP_KERNEL);
 662                                 cfg80211_put_bss(wiphy, bss);
 663                         }
 664                 } else
 665                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 666
 667                 tsfdesc += 8;
 668         }
 669         ret = 0;
 670
 671  done:
 672         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 673         return ret;
 674 }
 675
 676
 677 /*
 678  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 679  * TLV and a rates TLV. Determine the maximum size of them:
 680  */
 681 #define LBS_SCAN_MAX_CMD_SIZE                   \
 682         (sizeof(struct cmd_ds_802_11_scan)      \
 683          + LBS_MAX_SSID_TLV_SIZE                \
 684          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 685          + LBS_MAX_RATES_TLV_SIZE)
 686
 687 /*
 688  * Assumes priv->scan_req is initialized and valid
 689  * Assumes priv->scan_channel is initialized
 690  */
 691 static void lbs_scan_worker(struct work_struct *work)
 692 {
 693         struct lbs_private *priv =
 694                 container_of(work, struct lbs_private, scan_work.work);
 695         struct cmd_ds_802_11_scan *scan_cmd;
 696         u8 *tlv; /* pointer into our current, growing TLV storage area */
 697         int last_channel;
 698         int running, carrier;
 699
 700         lbs_deb_enter(LBS_DEB_SCAN);
 701
 702         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 703         if (scan_cmd == NULL)
 704                 goto out_no_scan_cmd;
 705
 706         /* prepare fixed part of scan command */
 707         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 708
 709         /* stop network while we're away from our main channel */
 710         running = !netif_queue_stopped(priv->dev);
 711         carrier = netif_carrier_ok(priv->dev);
 712         if (running)
 713                 netif_stop_queue(priv->dev);
 714         if (carrier)
 715                 netif_carrier_off(priv->dev);
 716
 717         /* prepare fixed part of scan command */
 718         tlv = scan_cmd->tlvbuffer;
 719
 720         /* add SSID TLV */
 721         if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
 722                 tlv += lbs_add_ssid_tlv(tlv,
 723                                         priv->scan_req->ssids[0].ssid,
 724                                         priv->scan_req->ssids[0].ssid_len);
 725
 726         /* add channel TLVs */
 727         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 728         if (last_channel > priv->scan_req->n_channels)
 729                 last_channel = priv->scan_req->n_channels;
 730         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 731                 priv->scan_req->n_ssids);
 732
 733         /* add rates TLV */
 734         tlv += lbs_add_supported_rates_tlv(tlv);
 735
 736         if (priv->scan_channel < priv->scan_req->n_channels) {
 737                 cancel_delayed_work(&priv->scan_work);
 738                 if (netif_running(priv->dev))
 739                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 740                                 msecs_to_jiffies(300));
 741         }
 742
 743         /* This is the final data we are about to send */
 744         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 745         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 746                     sizeof(*scan_cmd));
 747         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 748                     tlv - scan_cmd->tlvbuffer);
 749
 750         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 751                 le16_to_cpu(scan_cmd->hdr.size),
 752                 lbs_ret_scan, 0);
 753
 754         if (priv->scan_channel >= priv->scan_req->n_channels) {
 755                 /* Mark scan done */
 756                 cancel_delayed_work(&priv->scan_work);
 757                 lbs_scan_done(priv);
 758         }
 759
 760         /* Restart network */
 761         if (carrier)
 762                 netif_carrier_on(priv->dev);
 763         if (running && !priv->tx_pending_len)
 764                 netif_wake_queue(priv->dev);
 765
 766         kfree(scan_cmd);
 767
 768         /* Wake up anything waiting on scan completion */
 769         if (priv->scan_req == NULL) {
 770                 lbs_deb_scan("scan: waking up waiters\n");
 771                 wake_up_all(&priv->scan_q);
 772         }
 773
 774  out_no_scan_cmd:
 775         lbs_deb_leave(LBS_DEB_SCAN);
 776 }
 777
 778 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 779         struct cfg80211_scan_request *request)
 780 {
 781         lbs_deb_enter(LBS_DEB_CFG80211);
 782
 783         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 784                 request->n_ssids, request->n_channels, request->ie_len);
 785
 786         priv->scan_channel = 0;
 787         priv->scan_req = request;
 788         priv->internal_scan = internal;
 789
 790         queue_delayed_work(priv->work_thread, &priv->scan_work,
 791                 msecs_to_jiffies(50));
 792
 793         lbs_deb_leave(LBS_DEB_CFG80211);
 794 }
 795
 796 /*
 797  * Clean up priv->scan_req.  Should be used to handle the allocation details.
 798  */
 799 void lbs_scan_done(struct lbs_private *priv)
 800 {
 801         WARN_ON(!priv->scan_req);
 802
 803         if (priv->internal_scan)
 804                 kfree(priv->scan_req);
 805         else
 806                 cfg80211_scan_done(priv->scan_req, false);
 807
 808         priv->scan_req = NULL;
 809 }
 810
 811 static int lbs_cfg_scan(struct wiphy *wiphy,
 812         struct cfg80211_scan_request *request)
 813 {
 814         struct lbs_private *priv = wiphy_priv(wiphy);
 815         int ret = 0;
 816
 817         lbs_deb_enter(LBS_DEB_CFG80211);
 818
 819         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 820                 /* old scan request not yet processed */
 821                 ret = -EAGAIN;
 822                 goto out;
 823         }
 824
 825         _internal_start_scan(priv, false, request);
 826
 827         if (priv->surpriseremoved)
 828                 ret = -EIO;
 829
 830  out:
 831         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 832         return ret;
 833 }
 834
 835
 836
 837
 838 /*
 839  * Events
 840  */
 841
 842 void lbs_send_disconnect_notification(struct lbs_private *priv,
 843                                       bool locally_generated)
 844 {
 845         lbs_deb_enter(LBS_DEB_CFG80211);
 846
 847         cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
 848                               GFP_KERNEL);
 849
 850         lbs_deb_leave(LBS_DEB_CFG80211);
 851 }
 852
 853 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 854 {
 855         lbs_deb_enter(LBS_DEB_CFG80211);
 856
 857         cfg80211_michael_mic_failure(priv->dev,
 858                 priv->assoc_bss,
 859                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 860                         NL80211_KEYTYPE_GROUP :
 861                         NL80211_KEYTYPE_PAIRWISE,
 862                 -1,
 863                 NULL,
 864                 GFP_KERNEL);
 865
 866         lbs_deb_leave(LBS_DEB_CFG80211);
 867 }
 868
 869
 870
 871
 872 /*
 873  * Connect/disconnect
 874  */
 875
 876
 877 /*
 878  * This removes all WEP keys
 879  */
 880 static int lbs_remove_wep_keys(struct lbs_private *priv)
 881 {
 882         struct cmd_ds_802_11_set_wep cmd;
 883         int ret;
 884
 885         lbs_deb_enter(LBS_DEB_CFG80211);
 886
 887         memset(&cmd, 0, sizeof(cmd));
 888         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 889         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 890         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 891
 892         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 893
 894         lbs_deb_leave(LBS_DEB_CFG80211);
 895         return ret;
 896 }
 897
 898 /*
 899  * Set WEP keys
 900  */
 901 static int lbs_set_wep_keys(struct lbs_private *priv)
 902 {
 903         struct cmd_ds_802_11_set_wep cmd;
 904         int i;
 905         int ret;
 906
 907         lbs_deb_enter(LBS_DEB_CFG80211);
 908
 909         /*
 910          * command         13 00
 911          * size            50 00
 912          * sequence        xx xx
 913          * result          00 00
 914          * action          02 00     ACT_ADD
 915          * transmit key    00 00
 916          * type for key 1  01        WEP40
 917          * type for key 2  00
 918          * type for key 3  00
 919          * type for key 4  00
 920          * key 1           39 39 39 39 39 00 00 00
 921          *                 00 00 00 00 00 00 00 00
 922          * key 2           00 00 00 00 00 00 00 00
 923          *                 00 00 00 00 00 00 00 00
 924          * key 3           00 00 00 00 00 00 00 00
 925          *                 00 00 00 00 00 00 00 00
 926          * key 4           00 00 00 00 00 00 00 00
 927          */
 928         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 929             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 930                 /* Only set wep keys if we have at least one of them */
 931                 memset(&cmd, 0, sizeof(cmd));
 932                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 933                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 934                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 935
 936                 for (i = 0; i < 4; i++) {
 937                         switch (priv->wep_key_len[i]) {
 938                         case WLAN_KEY_LEN_WEP40:
 939                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 940                                 break;
 941                         case WLAN_KEY_LEN_WEP104:
 942                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 943                                 break;
 944                         default:
 945                                 cmd.keytype[i] = 0;
 946                                 break;
 947                         }
 948                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 949                                priv->wep_key_len[i]);
 950                 }
 951
 952                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 953         } else {
 954                 /* Otherwise remove all wep keys */
 955                 ret = lbs_remove_wep_keys(priv);
 956         }
 957
 958         lbs_deb_leave(LBS_DEB_CFG80211);
 959         return ret;
 960 }
 961
 962
 963 /*
 964  * Enable/Disable RSN status
 965  */
 966 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 967 {
 968         struct cmd_ds_802_11_enable_rsn cmd;
 969         int ret;
 970
 971         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 972
 973         /*
 974          * cmd       2f 00
 975          * size      0c 00
 976          * sequence  xx xx
 977          * result    00 00
 978          * action    01 00    ACT_SET
 979          * enable    01 00
 980          */
 981         memset(&cmd, 0, sizeof(cmd));
 982         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 983         cmd.action = cpu_to_le16(CMD_ACT_SET);
 984         cmd.enable = cpu_to_le16(enable);
 985
 986         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 987
 988         lbs_deb_leave(LBS_DEB_CFG80211);
 989         return ret;
 990 }
 991
 992
 993 /*
 994  * Set WPA/WPA key material
 995  */
 996
 997 /*
 998  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 999  * get rid of WEXT, this should go into host.h
1000  */
1001
1002 struct cmd_key_material {
1003         struct cmd_header hdr;
1004
1005         __le16 action;
1006         struct MrvlIEtype_keyParamSet param;
1007 } __packed;
1008
1009 static int lbs_set_key_material(struct lbs_private *priv,
1010                                 int key_type, int key_info,
1011                                 const u8 *key, u16 key_len)
1012 {
1013         struct cmd_key_material cmd;
1014         int ret;
1015
1016         lbs_deb_enter(LBS_DEB_CFG80211);
1017
1018         /*
1019          * Example for WPA (TKIP):
1020          *
1021          * cmd       5e 00
1022          * size      34 00
1023          * sequence  xx xx
1024          * result    00 00
1025          * action    01 00
1026          * TLV type  00 01    key param
1027          * length    00 26
1028          * key type  01 00    TKIP
1029          * key info  06 00    UNICAST | ENABLED
1030          * key len   20 00
1031          * key       32 bytes
1032          */
1033         memset(&cmd, 0, sizeof(cmd));
1034         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1035         cmd.action = cpu_to_le16(CMD_ACT_SET);
1036         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1037         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1038         cmd.param.keytypeid = cpu_to_le16(key_type);
1039         cmd.param.keyinfo = cpu_to_le16(key_info);
1040         cmd.param.keylen = cpu_to_le16(key_len);
1041         if (key && key_len)
1042                 memcpy(cmd.param.key, key, key_len);
1043
1044         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1045
1046         lbs_deb_leave(LBS_DEB_CFG80211);
1047         return ret;
1048 }
1049
1050
1051 /*
1052  * Sets the auth type (open, shared, etc) in the firmware. That
1053  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1054  * command doesn't send an authentication frame at all, it just
1055  * stores the auth_type.
1056  */
1057 static int lbs_set_authtype(struct lbs_private *priv,
1058                             struct cfg80211_connect_params *sme)
1059 {
1060         struct cmd_ds_802_11_authenticate cmd;
1061         int ret;
1062
1063         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1064
1065         /*
1066          * cmd        11 00
1067          * size       19 00
1068          * sequence   xx xx
1069          * result     00 00
1070          * BSS id     00 13 19 80 da 30
1071          * auth type  00
1072          * reserved   00 00 00 00 00 00 00 00 00 00
1073          */
1074         memset(&cmd, 0, sizeof(cmd));
1075         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1076         if (sme->bssid)
1077                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1078         /* convert auth_type */
1079         ret = lbs_auth_to_authtype(sme->auth_type);
1080         if (ret < 0)
1081                 goto done;
1082
1083         cmd.authtype = ret;
1084         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1085
1086  done:
1087         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1088         return ret;
1089 }
1090
1091
1092 /*
1093  * Create association request
1094  */
1095 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1096         (sizeof(struct cmd_ds_802_11_associate)    \
1097          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1098          + LBS_MAX_SSID_TLV_SIZE                   \
1099          + LBS_MAX_CHANNEL_TLV_SIZE                \
1100          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1101          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1102          + LBS_MAX_WPA_TLV_SIZE)
1103
1104 static int lbs_associate(struct lbs_private *priv,
1105                 struct cfg80211_bss *bss,
1106                 struct cfg80211_connect_params *sme)
1107 {
1108         struct cmd_ds_802_11_associate_response *resp;
1109         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1110                                                       GFP_KERNEL);
1111         const u8 *ssid_eid;
1112         size_t len, resp_ie_len;
1113         int status;
1114         int ret;
1115         u8 *pos = &(cmd->iebuf[0]);
1116         u8 *tmp;
1117
1118         lbs_deb_enter(LBS_DEB_CFG80211);
1119
1120         if (!cmd) {
1121                 ret = -ENOMEM;
1122                 goto done;
1123         }
1124
1125         /*
1126          * cmd              50 00
1127          * length           34 00
1128          * sequence         xx xx
1129          * result           00 00
1130          * BSS id           00 13 19 80 da 30
1131          * capabilities     11 00
1132          * listen interval  0a 00
1133          * beacon interval  00 00
1134          * DTIM period      00
1135          * TLVs             xx   (up to 512 bytes)
1136          */
1137         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1138
1139         /* Fill in static fields */
1140         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1141         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1142         cmd->capability = cpu_to_le16(bss->capability);
1143
1144         /* add SSID TLV */
1145         rcu_read_lock();
1146         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1147         if (ssid_eid)
1148                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1149         else
1150                 lbs_deb_assoc("no SSID\n");
1151         rcu_read_unlock();
1152
1153         /* add DS param TLV */
1154         if (bss->channel)
1155                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1156         else
1157                 lbs_deb_assoc("no channel\n");
1158
1159         /* add (empty) CF param TLV */
1160         pos += lbs_add_cf_param_tlv(pos);
1161
1162         /* add rates TLV */
1163         tmp = pos + 4; /* skip Marvell IE header */
1164         pos += lbs_add_common_rates_tlv(pos, bss);
1165         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1166
1167         /* add auth type TLV */
1168         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1169                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1170
1171         /* add WPA/WPA2 TLV */
1172         if (sme->ie && sme->ie_len)
1173                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1174
1175         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1176                 (u16)(pos - (u8 *) &cmd->iebuf);
1177         cmd->hdr.size = cpu_to_le16(len);
1178
1179         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1180                         le16_to_cpu(cmd->hdr.size));
1181
1182         /* store for later use */
1183         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1184
1185         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1186         if (ret)
1187                 goto done;
1188
1189         /* generate connect message to cfg80211 */
1190
1191         resp = (void *) cmd; /* recast for easier field access */
1192         status = le16_to_cpu(resp->statuscode);
1193
1194         /* Older FW versions map the IEEE 802.11 Status Code in the association
1195          * response to the following values returned in resp->statuscode:
1196          *
1197          *    IEEE Status Code                Marvell Status Code
1198          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1199          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1200          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1201          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1202          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1203          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1204          *
1205          * Other response codes:
1206          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1207          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1208          *                                    association response from the AP)
1209          */
1210         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1211                 switch (status) {
1212                 case 0:
1213                         break;
1214                 case 1:
1215                         lbs_deb_assoc("invalid association parameters\n");
1216                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1217                         break;
1218                 case 2:
1219                         lbs_deb_assoc("timer expired while waiting for AP\n");
1220                         status = WLAN_STATUS_AUTH_TIMEOUT;
1221                         break;
1222                 case 3:
1223                         lbs_deb_assoc("association refused by AP\n");
1224                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1225                         break;
1226                 case 4:
1227                         lbs_deb_assoc("authentication refused by AP\n");
1228                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1229                         break;
1230                 default:
1231                         lbs_deb_assoc("association failure %d\n", status);
1232                         /* v5 OLPC firmware does return the AP status code if
1233                          * it's not one of the values above.  Let that through.
1234                          */
1235                         break;
1236                 }
1237         }
1238
1239         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1240                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1241                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1242
1243         resp_ie_len = le16_to_cpu(resp->hdr.size)
1244                 - sizeof(resp->hdr)
1245                 - 6;
1246         cfg80211_connect_result(priv->dev,
1247                                 priv->assoc_bss,
1248                                 sme->ie, sme->ie_len,
1249                                 resp->iebuf, resp_ie_len,
1250                                 status,
1251                                 GFP_KERNEL);
1252
1253         if (status == 0) {
1254                 /* TODO: get rid of priv->connect_status */
1255                 priv->connect_status = LBS_CONNECTED;
1256                 netif_carrier_on(priv->dev);
1257                 if (!priv->tx_pending_len)
1258                         netif_tx_wake_all_queues(priv->dev);
1259         }
1260
1261         kfree(cmd);
1262 done:
1263         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1264         return ret;
1265 }
1266
1267 static struct cfg80211_scan_request *
1268 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1269 {
1270         struct cfg80211_scan_request *creq = NULL;
1271         int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1272         enum nl80211_band band;
1273
1274         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1275                        n_channels * sizeof(void *),
1276                        GFP_ATOMIC);
1277         if (!creq)
1278                 return NULL;
1279
1280         /* SSIDs come after channels */
1281         creq->ssids = (void *)&creq->channels[n_channels];
1282         creq->n_channels = n_channels;
1283         creq->n_ssids = 1;
1284
1285         /* Scan all available channels */
1286         i = 0;
1287         for (band = 0; band < NUM_NL80211_BANDS; band++) {
1288                 int j;
1289
1290                 if (!wiphy->bands[band])
1291                         continue;
1292
1293                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1294                         /* ignore disabled channels */
1295                         if (wiphy->bands[band]->channels[j].flags &
1296                                                 IEEE80211_CHAN_DISABLED)
1297                                 continue;
1298
1299                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1300                         i++;
1301                 }
1302         }
1303         if (i) {
1304                 /* Set real number of channels specified in creq->channels[] */
1305                 creq->n_channels = i;
1306
1307                 /* Scan for the SSID we're going to connect to */
1308                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1309                 creq->ssids[0].ssid_len = sme->ssid_len;
1310         } else {
1311                 /* No channels found... */
1312                 kfree(creq);
1313                 creq = NULL;
1314         }
1315
1316         return creq;
1317 }
1318
1319 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1320                            struct cfg80211_connect_params *sme)
1321 {
1322         struct lbs_private *priv = wiphy_priv(wiphy);
1323         struct cfg80211_bss *bss = NULL;
1324         int ret = 0;
1325         u8 preamble = RADIO_PREAMBLE_SHORT;
1326
1327         if (dev == priv->mesh_dev)
1328                 return -EOPNOTSUPP;
1329
1330         lbs_deb_enter(LBS_DEB_CFG80211);
1331
1332         if (!sme->bssid) {
1333                 struct cfg80211_scan_request *creq;
1334
1335                 /*
1336                  * Scan for the requested network after waiting for existing
1337                  * scans to finish.
1338                  */
1339                 lbs_deb_assoc("assoc: waiting for existing scans\n");
1340                 wait_event_interruptible_timeout(priv->scan_q,
1341                                                  (priv->scan_req == NULL),
1342                                                  (15 * HZ));
1343
1344                 creq = _new_connect_scan_req(wiphy, sme);
1345                 if (!creq) {
1346                         ret = -EINVAL;
1347                         goto done;
1348                 }
1349
1350                 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1351                 _internal_start_scan(priv, true, creq);
1352
1353                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1354                 wait_event_interruptible_timeout(priv->scan_q,
1355                                                  (priv->scan_req == NULL),
1356                                                  (15 * HZ));
1357                 lbs_deb_assoc("assoc: scanning completed\n");
1358         }
1359
1360         /* Find the BSS we want using available scan results */
1361         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1362                 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1363                 IEEE80211_PRIVACY_ANY);
1364         if (!bss) {
1365                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1366                           sme->bssid);
1367                 ret = -ENOENT;
1368                 goto done;
1369         }
1370         lbs_deb_assoc("trying %pM\n", bss->bssid);
1371         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1372                       sme->crypto.cipher_group,
1373                       sme->key_idx, sme->key_len);
1374
1375         /* As this is a new connection, clear locally stored WEP keys */
1376         priv->wep_tx_key = 0;
1377         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1378         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1379
1380         /* set/remove WEP keys */
1381         switch (sme->crypto.cipher_group) {
1382         case WLAN_CIPHER_SUITE_WEP40:
1383         case WLAN_CIPHER_SUITE_WEP104:
1384                 /* Store provided WEP keys in priv-> */
1385                 priv->wep_tx_key = sme->key_idx;
1386                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1387                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1388                 /* Set WEP keys and WEP mode */
1389                 lbs_set_wep_keys(priv);
1390                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1391                 lbs_set_mac_control(priv);
1392                 /* No RSN mode for WEP */
1393                 lbs_enable_rsn(priv, 0);
1394                 break;
1395         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1396                 /*
1397                  * If we don't have no WEP, no WPA and no WPA2,
1398                  * we remove all keys like in the WPA/WPA2 setup,
1399                  * we just don't set RSN.
1400                  *
1401                  * Therefore: fall-through
1402                  */
1403         case WLAN_CIPHER_SUITE_TKIP:
1404         case WLAN_CIPHER_SUITE_CCMP:
1405                 /* Remove WEP keys and WEP mode */
1406                 lbs_remove_wep_keys(priv);
1407                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1408                 lbs_set_mac_control(priv);
1409
1410                 /* clear the WPA/WPA2 keys */
1411                 lbs_set_key_material(priv,
1412                         KEY_TYPE_ID_WEP, /* doesn't matter */
1413                         KEY_INFO_WPA_UNICAST,
1414                         NULL, 0);
1415                 lbs_set_key_material(priv,
1416                         KEY_TYPE_ID_WEP, /* doesn't matter */
1417                         KEY_INFO_WPA_MCAST,
1418                         NULL, 0);
1419                 /* RSN mode for WPA/WPA2 */
1420                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1421                 break;
1422         default:
1423                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1424                           sme->crypto.cipher_group);
1425                 ret = -ENOTSUPP;
1426                 goto done;
1427         }
1428
1429         ret = lbs_set_authtype(priv, sme);
1430         if (ret == -ENOTSUPP) {
1431                 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1432                 goto done;
1433         }
1434
1435         lbs_set_radio(priv, preamble, 1);
1436
1437         /* Do the actual association */
1438         ret = lbs_associate(priv, bss, sme);
1439
1440  done:
1441         if (bss)
1442                 cfg80211_put_bss(wiphy, bss);
1443         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1444         return ret;
1445 }
1446
1447 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1448 {
1449         struct cmd_ds_802_11_deauthenticate cmd;
1450         int ret;
1451
1452         memset(&cmd, 0, sizeof(cmd));
1453         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1454         /* Mildly ugly to use a locally store my own BSSID ... */
1455         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1456         cmd.reasoncode = cpu_to_le16(reason);
1457
1458         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1459         if (ret)
1460                 return ret;
1461
1462         cfg80211_disconnected(priv->dev,
1463                         reason,
1464                         NULL, 0, true,
1465                         GFP_KERNEL);
1466         priv->connect_status = LBS_DISCONNECTED;
1467
1468         return 0;
1469 }
1470
1471 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1472         u16 reason_code)
1473 {
1474         struct lbs_private *priv = wiphy_priv(wiphy);
1475
1476         if (dev == priv->mesh_dev)
1477                 return -EOPNOTSUPP;
1478
1479         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1480
1481         /* store for lbs_cfg_ret_disconnect() */
1482         priv->disassoc_reason = reason_code;
1483
1484         return lbs_disconnect(priv, reason_code);
1485 }
1486
1487 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1488                                    struct net_device *netdev,
1489                                    u8 key_index, bool unicast,
1490                                    bool multicast)
1491 {
1492         struct lbs_private *priv = wiphy_priv(wiphy);
1493
1494         if (netdev == priv->mesh_dev)
1495                 return -EOPNOTSUPP;
1496
1497         lbs_deb_enter(LBS_DEB_CFG80211);
1498
1499         if (key_index != priv->wep_tx_key) {
1500                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1501                 priv->wep_tx_key = key_index;
1502                 lbs_set_wep_keys(priv);
1503         }
1504
1505         return 0;
1506 }
1507
1508
1509 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1510                            u8 idx, bool pairwise, const u8 *mac_addr,
1511                            struct key_params *params)
1512 {
1513         struct lbs_private *priv = wiphy_priv(wiphy);
1514         u16 key_info;
1515         u16 key_type;
1516         int ret = 0;
1517
1518         if (netdev == priv->mesh_dev)
1519                 return -EOPNOTSUPP;
1520
1521         lbs_deb_enter(LBS_DEB_CFG80211);
1522
1523         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1524                       params->cipher, mac_addr);
1525         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1526                       idx, params->key_len);
1527         if (params->key_len)
1528                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1529                             params->key, params->key_len);
1530
1531         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1532         if (params->seq_len)
1533                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1534                             params->seq, params->seq_len);
1535
1536         switch (params->cipher) {
1537         case WLAN_CIPHER_SUITE_WEP40:
1538         case WLAN_CIPHER_SUITE_WEP104:
1539                 /* actually compare if something has changed ... */
1540                 if ((priv->wep_key_len[idx] != params->key_len) ||
1541                         memcmp(priv->wep_key[idx],
1542                                params->key, params->key_len) != 0) {
1543                         priv->wep_key_len[idx] = params->key_len;
1544                         memcpy(priv->wep_key[idx],
1545                                params->key, params->key_len);
1546                         lbs_set_wep_keys(priv);
1547                 }
1548                 break;
1549         case WLAN_CIPHER_SUITE_TKIP:
1550         case WLAN_CIPHER_SUITE_CCMP:
1551                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1552                                                    ? KEY_INFO_WPA_UNICAST
1553                                                    : KEY_INFO_WPA_MCAST);
1554                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1555                         ? KEY_TYPE_ID_TKIP
1556                         : KEY_TYPE_ID_AES;
1557                 lbs_set_key_material(priv,
1558                                      key_type,
1559                                      key_info,
1560                                      params->key, params->key_len);
1561                 break;
1562         default:
1563                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1564                 ret = -ENOTSUPP;
1565                 break;
1566         }
1567
1568         return ret;
1569 }
1570
1571
1572 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1573                            u8 key_index, bool pairwise, const u8 *mac_addr)
1574 {
1575
1576         lbs_deb_enter(LBS_DEB_CFG80211);
1577
1578         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1579                       key_index, mac_addr);
1580
1581 #ifdef TODO
1582         struct lbs_private *priv = wiphy_priv(wiphy);
1583         /*
1584          * I think can keep this a NO-OP, because:
1585
1586          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1587          * - neither "iw" nor "wpa_supplicant" won't call this during
1588          *   an ongoing connection
1589          * - TODO: but I have to check if this is still true when
1590          *   I set the AP to periodic re-keying
1591          * - we've not kzallec() something when we've added a key at
1592          *   lbs_cfg_connect() or lbs_cfg_add_key().
1593          *
1594          * This causes lbs_cfg_del_key() only called at disconnect time,
1595          * where we'd just waste time deleting a key that is not going
1596          * to be used anyway.
1597          */
1598         if (key_index < 3 && priv->wep_key_len[key_index]) {
1599                 priv->wep_key_len[key_index] = 0;
1600                 lbs_set_wep_keys(priv);
1601         }
1602 #endif
1603
1604         return 0;
1605 }
1606
1607
1608 /*
1609  * Get station
1610  */
1611
1612 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1613                                const u8 *mac, struct station_info *sinfo)
1614 {
1615         struct lbs_private *priv = wiphy_priv(wiphy);
1616         s8 signal, noise;
1617         int ret;
1618         size_t i;
1619
1620         lbs_deb_enter(LBS_DEB_CFG80211);
1621
1622         sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) |
1623                          BIT(NL80211_STA_INFO_TX_PACKETS) |
1624                          BIT(NL80211_STA_INFO_RX_BYTES) |
1625                          BIT(NL80211_STA_INFO_RX_PACKETS);
1626         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1627         sinfo->tx_packets = priv->dev->stats.tx_packets;
1628         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1629         sinfo->rx_packets = priv->dev->stats.rx_packets;
1630
1631         /* Get current RSSI */
1632         ret = lbs_get_rssi(priv, &signal, &noise);
1633         if (ret == 0) {
1634                 sinfo->signal = signal;
1635                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1636         }
1637
1638         /* Convert priv->cur_rate from hw_value to NL80211 value */
1639         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1640                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1641                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1642                         sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1643                         break;
1644                 }
1645         }
1646
1647         return 0;
1648 }
1649
1650
1651
1652
1653 /*
1654  * Change interface
1655  */
1656
1657 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1658         enum nl80211_iftype type, u32 *flags,
1659                struct vif_params *params)
1660 {
1661         struct lbs_private *priv = wiphy_priv(wiphy);
1662         int ret = 0;
1663
1664         if (dev == priv->mesh_dev)
1665                 return -EOPNOTSUPP;
1666
1667         switch (type) {
1668         case NL80211_IFTYPE_MONITOR:
1669         case NL80211_IFTYPE_STATION:
1670         case NL80211_IFTYPE_ADHOC:
1671                 break;
1672         default:
1673                 return -EOPNOTSUPP;
1674         }
1675
1676         lbs_deb_enter(LBS_DEB_CFG80211);
1677
1678         if (priv->iface_running)
1679                 ret = lbs_set_iface_type(priv, type);
1680
1681         if (!ret)
1682                 priv->wdev->iftype = type;
1683
1684         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1685         return ret;
1686 }
1687
1688
1689
1690 /*
1691  * IBSS (Ad-Hoc)
1692  */
1693
1694 /*
1695  * The firmware needs the following bits masked out of the beacon-derived
1696  * capability field when associating/joining to a BSS:
1697  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1698  */
1699 #define CAPINFO_MASK (~(0xda00))
1700
1701
1702 static void lbs_join_post(struct lbs_private *priv,
1703                           struct cfg80211_ibss_params *params,
1704                           u8 *bssid, u16 capability)
1705 {
1706         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1707                    2 + 4 +                      /* basic rates */
1708                    2 + 1 +                      /* DS parameter */
1709                    2 + 2 +                      /* atim */
1710                    2 + 8];                      /* extended rates */
1711         u8 *fake = fake_ie;
1712         struct cfg80211_bss *bss;
1713
1714         lbs_deb_enter(LBS_DEB_CFG80211);
1715
1716         /*
1717          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1718          * the real IE from the firmware. So we fabricate a fake IE based on
1719          * what the firmware actually sends (sniffed with wireshark).
1720          */
1721         /* Fake SSID IE */
1722         *fake++ = WLAN_EID_SSID;
1723         *fake++ = params->ssid_len;
1724         memcpy(fake, params->ssid, params->ssid_len);
1725         fake += params->ssid_len;
1726         /* Fake supported basic rates IE */
1727         *fake++ = WLAN_EID_SUPP_RATES;
1728         *fake++ = 4;
1729         *fake++ = 0x82;
1730         *fake++ = 0x84;
1731         *fake++ = 0x8b;
1732         *fake++ = 0x96;
1733         /* Fake DS channel IE */
1734         *fake++ = WLAN_EID_DS_PARAMS;
1735         *fake++ = 1;
1736         *fake++ = params->chandef.chan->hw_value;
1737         /* Fake IBSS params IE */
1738         *fake++ = WLAN_EID_IBSS_PARAMS;
1739         *fake++ = 2;
1740         *fake++ = 0; /* ATIM=0 */
1741         *fake++ = 0;
1742         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1743          * but I don't know how this could be checked */
1744         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1745         *fake++ = 8;
1746         *fake++ = 0x0c;
1747         *fake++ = 0x12;
1748         *fake++ = 0x18;
1749         *fake++ = 0x24;
1750         *fake++ = 0x30;
1751         *fake++ = 0x48;
1752         *fake++ = 0x60;
1753         *fake++ = 0x6c;
1754         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1755
1756         bss = cfg80211_inform_bss(priv->wdev->wiphy,
1757                                   params->chandef.chan,
1758                                   CFG80211_BSS_FTYPE_UNKNOWN,
1759                                   bssid,
1760                                   0,
1761                                   capability,
1762                                   params->beacon_interval,
1763                                   fake_ie, fake - fake_ie,
1764                                   0, GFP_KERNEL);
1765         cfg80211_put_bss(priv->wdev->wiphy, bss);
1766
1767         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1768         priv->wdev->ssid_len = params->ssid_len;
1769
1770         cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1771                              GFP_KERNEL);
1772
1773         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1774         priv->connect_status = LBS_CONNECTED;
1775         netif_carrier_on(priv->dev);
1776         if (!priv->tx_pending_len)
1777                 netif_wake_queue(priv->dev);
1778
1779         lbs_deb_leave(LBS_DEB_CFG80211);
1780 }
1781
1782 static int lbs_ibss_join_existing(struct lbs_private *priv,
1783         struct cfg80211_ibss_params *params,
1784         struct cfg80211_bss *bss)
1785 {
1786         const u8 *rates_eid;
1787         struct cmd_ds_802_11_ad_hoc_join cmd;
1788         u8 preamble = RADIO_PREAMBLE_SHORT;
1789         int ret = 0;
1790         int hw, i;
1791         u8 rates_max;
1792         u8 *rates;
1793
1794         lbs_deb_enter(LBS_DEB_CFG80211);
1795
1796         /* TODO: set preamble based on scan result */
1797         ret = lbs_set_radio(priv, preamble, 1);
1798         if (ret)
1799                 goto out;
1800
1801         /*
1802          * Example CMD_802_11_AD_HOC_JOIN command:
1803          *
1804          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1805          * size            65 00
1806          * sequence        xx xx
1807          * result          00 00
1808          * bssid           02 27 27 97 2f 96
1809          * ssid            49 42 53 53 00 00 00 00
1810          *                 00 00 00 00 00 00 00 00
1811          *                 00 00 00 00 00 00 00 00
1812          *                 00 00 00 00 00 00 00 00
1813          * type            02            CMD_BSS_TYPE_IBSS
1814          * beacon period   64 00
1815          * dtim period     00
1816          * timestamp       00 00 00 00 00 00 00 00
1817          * localtime       00 00 00 00 00 00 00 00
1818          * IE DS           03
1819          * IE DS len       01
1820          * IE DS channel   01
1821          * reserveed       00 00 00 00
1822          * IE IBSS         06
1823          * IE IBSS len     02
1824          * IE IBSS atim    00 00
1825          * reserved        00 00 00 00
1826          * capability      02 00
1827          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1828          * fail timeout    ff 00
1829          * probe delay     00 00
1830          */
1831         memset(&cmd, 0, sizeof(cmd));
1832         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1833
1834         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1835         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1836         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1837         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1838         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1839         cmd.bss.ds.header.len = 1;
1840         cmd.bss.ds.channel = params->chandef.chan->hw_value;
1841         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1842         cmd.bss.ibss.header.len = 2;
1843         cmd.bss.ibss.atimwindow = 0;
1844         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1845
1846         /* set rates to the intersection of our rates and the rates in the
1847            bss */
1848         rcu_read_lock();
1849         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1850         if (!rates_eid) {
1851                 lbs_add_rates(cmd.bss.rates);
1852         } else {
1853                 rates_max = rates_eid[1];
1854                 if (rates_max > MAX_RATES) {
1855                         lbs_deb_join("invalid rates");
1856                         rcu_read_unlock();
1857                         ret = -EINVAL;
1858                         goto out;
1859                 }
1860                 rates = cmd.bss.rates;
1861                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1862                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1863                         for (i = 0; i < rates_max; i++) {
1864                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1865                                         u8 rate = rates_eid[i+2];
1866                                         if (rate == 0x02 || rate == 0x04 ||
1867                                             rate == 0x0b || rate == 0x16)
1868                                                 rate |= 0x80;
1869                                         *rates++ = rate;
1870                                 }
1871                         }
1872                 }
1873         }
1874         rcu_read_unlock();
1875
1876         /* Only v8 and below support setting this */
1877         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1878                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1879                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1880         }
1881         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1882         if (ret)
1883                 goto out;
1884
1885         /*
1886          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1887          *
1888          * response        2c 80
1889          * size            09 00
1890          * sequence        xx xx
1891          * result          00 00
1892          * reserved        00
1893          */
1894         lbs_join_post(priv, params, bss->bssid, bss->capability);
1895
1896  out:
1897         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1898         return ret;
1899 }
1900
1901
1902
1903 static int lbs_ibss_start_new(struct lbs_private *priv,
1904         struct cfg80211_ibss_params *params)
1905 {
1906         struct cmd_ds_802_11_ad_hoc_start cmd;
1907         struct cmd_ds_802_11_ad_hoc_result *resp =
1908                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1909         u8 preamble = RADIO_PREAMBLE_SHORT;
1910         int ret = 0;
1911         u16 capability;
1912
1913         lbs_deb_enter(LBS_DEB_CFG80211);
1914
1915         ret = lbs_set_radio(priv, preamble, 1);
1916         if (ret)
1917                 goto out;
1918
1919         /*
1920          * Example CMD_802_11_AD_HOC_START command:
1921          *
1922          * command         2b 00         CMD_802_11_AD_HOC_START
1923          * size            b1 00
1924          * sequence        xx xx
1925          * result          00 00
1926          * ssid            54 45 53 54 00 00 00 00
1927          *                 00 00 00 00 00 00 00 00
1928          *                 00 00 00 00 00 00 00 00
1929          *                 00 00 00 00 00 00 00 00
1930          * bss type        02
1931          * beacon period   64 00
1932          * dtim period     00
1933          * IE IBSS         06
1934          * IE IBSS len     02
1935          * IE IBSS atim    00 00
1936          * reserved        00 00 00 00
1937          * IE DS           03
1938          * IE DS len       01
1939          * IE DS channel   01
1940          * reserved        00 00 00 00
1941          * probe delay     00 00
1942          * capability      02 00
1943          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1944          *                 0c 12 18 24 30 48 60 6c
1945          * padding         100 bytes
1946          */
1947         memset(&cmd, 0, sizeof(cmd));
1948         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1949         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1950         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1951         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1952         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1953         cmd.ibss.header.len = 2;
1954         cmd.ibss.atimwindow = 0;
1955         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1956         cmd.ds.header.len = 1;
1957         cmd.ds.channel = params->chandef.chan->hw_value;
1958         /* Only v8 and below support setting probe delay */
1959         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1960                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1961         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1962         capability = WLAN_CAPABILITY_IBSS;
1963         cmd.capability = cpu_to_le16(capability);
1964         lbs_add_rates(cmd.rates);
1965
1966
1967         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1968         if (ret)
1969                 goto out;
1970
1971         /*
1972          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1973          *
1974          * response        2b 80
1975          * size            14 00
1976          * sequence        xx xx
1977          * result          00 00
1978          * reserved        00
1979          * bssid           02 2b 7b 0f 86 0e
1980          */
1981         lbs_join_post(priv, params, resp->bssid, capability);
1982
1983  out:
1984         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1985         return ret;
1986 }
1987
1988
1989 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1990                 struct cfg80211_ibss_params *params)
1991 {
1992         struct lbs_private *priv = wiphy_priv(wiphy);
1993         int ret = 0;
1994         struct cfg80211_bss *bss;
1995
1996         if (dev == priv->mesh_dev)
1997                 return -EOPNOTSUPP;
1998
1999         lbs_deb_enter(LBS_DEB_CFG80211);
2000
2001         if (!params->chandef.chan) {
2002                 ret = -ENOTSUPP;
2003                 goto out;
2004         }
2005
2006         ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
2007         if (ret)
2008                 goto out;
2009
2010         /* Search if someone is beaconing. This assumes that the
2011          * bss list is populated already */
2012         bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
2013                 params->ssid, params->ssid_len,
2014                 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
2015
2016         if (bss) {
2017                 ret = lbs_ibss_join_existing(priv, params, bss);
2018                 cfg80211_put_bss(wiphy, bss);
2019         } else
2020                 ret = lbs_ibss_start_new(priv, params);
2021
2022
2023  out:
2024         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2025         return ret;
2026 }
2027
2028
2029 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2030 {
2031         struct lbs_private *priv = wiphy_priv(wiphy);
2032         struct cmd_ds_802_11_ad_hoc_stop cmd;
2033         int ret = 0;
2034
2035         if (dev == priv->mesh_dev)
2036                 return -EOPNOTSUPP;
2037
2038         lbs_deb_enter(LBS_DEB_CFG80211);
2039
2040         memset(&cmd, 0, sizeof(cmd));
2041         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2042         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2043
2044         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2045         lbs_mac_event_disconnected(priv, true);
2046
2047         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2048         return ret;
2049 }
2050
2051
2052
2053
2054 /*
2055  * Initialization
2056  */
2057
2058 static struct cfg80211_ops lbs_cfg80211_ops = {
2059         .set_monitor_channel = lbs_cfg_set_monitor_channel,
2060         .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2061         .scan = lbs_cfg_scan,
2062         .connect = lbs_cfg_connect,
2063         .disconnect = lbs_cfg_disconnect,
2064         .add_key = lbs_cfg_add_key,
2065         .del_key = lbs_cfg_del_key,
2066         .set_default_key = lbs_cfg_set_default_key,
2067         .get_station = lbs_cfg_get_station,
2068         .change_virtual_intf = lbs_change_intf,
2069         .join_ibss = lbs_join_ibss,
2070         .leave_ibss = lbs_leave_ibss,
2071 };
2072
2073
2074 /*
2075  * At this time lbs_private *priv doesn't even exist, so we just allocate
2076  * memory and don't initialize the wiphy further. This is postponed until we
2077  * can talk to the firmware and happens at registration time in
2078  * lbs_cfg_wiphy_register().
2079  */
2080 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2081 {
2082         int ret = 0;
2083         struct wireless_dev *wdev;
2084
2085         lbs_deb_enter(LBS_DEB_CFG80211);
2086
2087         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2088         if (!wdev)
2089                 return ERR_PTR(-ENOMEM);
2090
2091         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2092         if (!wdev->wiphy) {
2093                 dev_err(dev, "cannot allocate wiphy\n");
2094                 ret = -ENOMEM;
2095                 goto err_wiphy_new;
2096         }
2097
2098         lbs_deb_leave(LBS_DEB_CFG80211);
2099         return wdev;
2100
2101  err_wiphy_new:
2102         kfree(wdev);
2103         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2104         return ERR_PTR(ret);
2105 }
2106
2107
2108 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2109 {
2110         struct region_code_mapping {
2111                 const char *cn;
2112                 int code;
2113         };
2114
2115         /* Section 5.17.2 */
2116         static const struct region_code_mapping regmap[] = {
2117                 {"US ", 0x10}, /* US FCC */
2118                 {"CA ", 0x20}, /* Canada */
2119                 {"EU ", 0x30}, /* ETSI   */
2120                 {"ES ", 0x31}, /* Spain  */
2121                 {"FR ", 0x32}, /* France */
2122                 {"JP ", 0x40}, /* Japan  */
2123         };
2124         size_t i;
2125
2126         lbs_deb_enter(LBS_DEB_CFG80211);
2127
2128         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2129                 if (regmap[i].code == priv->regioncode) {
2130                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2131                         break;
2132                 }
2133
2134         lbs_deb_leave(LBS_DEB_CFG80211);
2135 }
2136
2137 static void lbs_reg_notifier(struct wiphy *wiphy,
2138                              struct regulatory_request *request)
2139 {
2140         struct lbs_private *priv = wiphy_priv(wiphy);
2141
2142         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2143                         "callback for domain %c%c\n", request->alpha2[0],
2144                         request->alpha2[1]);
2145
2146         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2147         if (lbs_iface_active(priv))
2148                 lbs_set_11d_domain_info(priv);
2149
2150         lbs_deb_leave(LBS_DEB_CFG80211);
2151 }
2152
2153 /*
2154  * This function get's called after lbs_setup_firmware() determined the
2155  * firmware capabities. So we can setup the wiphy according to our
2156  * hardware/firmware.
2157  */
2158 int lbs_cfg_register(struct lbs_private *priv)
2159 {
2160         struct wireless_dev *wdev = priv->wdev;
2161         int ret;
2162
2163         lbs_deb_enter(LBS_DEB_CFG80211);
2164
2165         wdev->wiphy->max_scan_ssids = 1;
2166         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2167
2168         wdev->wiphy->interface_modes =
2169                         BIT(NL80211_IFTYPE_STATION) |
2170                         BIT(NL80211_IFTYPE_ADHOC);
2171         if (lbs_rtap_supported(priv))
2172                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2173         if (lbs_mesh_activated(priv))
2174                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2175
2176         wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
2177
2178         /*
2179          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2180          * never seen a firmware without WPA
2181          */
2182         wdev->wiphy->cipher_suites = cipher_suites;
2183         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2184         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2185
2186         ret = wiphy_register(wdev->wiphy);
2187         if (ret < 0)
2188                 pr_err("cannot register wiphy device\n");
2189
2190         priv->wiphy_registered = true;
2191
2192         ret = register_netdev(priv->dev);
2193         if (ret)
2194                 pr_err("cannot register network device\n");
2195
2196         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2197
2198         lbs_cfg_set_regulatory_hint(priv);
2199
2200         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2201         return ret;
2202 }
2203
2204 void lbs_scan_deinit(struct lbs_private *priv)
2205 {
2206         lbs_deb_enter(LBS_DEB_CFG80211);
2207         cancel_delayed_work_sync(&priv->scan_work);
2208 }
2209
2210
2211 void lbs_cfg_free(struct lbs_private *priv)
2212 {
2213         struct wireless_dev *wdev = priv->wdev;
2214
2215         lbs_deb_enter(LBS_DEB_CFG80211);
2216
2217         if (!wdev)
2218                 return;
2219
2220         if (priv->wiphy_registered)
2221                 wiphy_unregister(wdev->wiphy);
2222
2223         if (wdev->wiphy)
2224                 wiphy_free(wdev->wiphy);
2225
2226         kfree(wdev);
2227 }