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             = IEEE80211_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         /* Advance past IE header */
 276         ie += 2;
 277
 278         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 279
 280         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 281                 hw_rate = lbs_rates[hw].bitrate / 5;
 282                 for (ap = 0; ap < ap_max; ap++) {
 283                         if (hw_rate == (ie[ap] & 0x7f)) {
 284                                 *tlv++ = ie[ap];
 285                                 *nrates = *nrates + 1;
 286                         }
 287                 }
 288         }
 289         return tlv;
 290 }
 291
 292 /*
 293  * Adds a TLV with all rates the hardware *and* BSS supports.
 294  */
 295 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 296 {
 297         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 298         const u8 *rates_eid, *ext_rates_eid;
 299         int n = 0;
 300
 301         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 302         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 303
 304         /*
 305          * 01 00                   TLV_TYPE_RATES
 306          * 04 00                   len
 307          * 82 84 8b 96             rates
 308          */
 309         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 310         tlv += sizeof(rate_tlv->header);
 311
 312         /* Add basic rates */
 313         if (rates_eid) {
 314                 tlv = add_ie_rates(tlv, rates_eid, &n);
 315
 316                 /* Add extended rates, if any */
 317                 if (ext_rates_eid)
 318                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 319         } else {
 320                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 321                 /* Fallback: add basic 802.11b rates */
 322                 *tlv++ = 0x82;
 323                 *tlv++ = 0x84;
 324                 *tlv++ = 0x8b;
 325                 *tlv++ = 0x96;
 326                 n = 4;
 327         }
 328
 329         rate_tlv->header.len = cpu_to_le16(n);
 330         return sizeof(rate_tlv->header) + n;
 331 }
 332
 333
 334 /*
 335  * Add auth type TLV.
 336  *
 337  * This is only needed for newer firmware (V9 and up).
 338  */
 339 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 340         sizeof(struct mrvl_ie_auth_type)
 341
 342 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 343 {
 344         struct mrvl_ie_auth_type *auth = (void *) tlv;
 345
 346         /*
 347          * 1f 01  TLV_TYPE_AUTH_TYPE
 348          * 01 00  len
 349          * 01     auth type
 350          */
 351         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 352         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 353         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 354         return sizeof(*auth);
 355 }
 356
 357
 358 /*
 359  * Add channel (phy ds) TLV
 360  */
 361 #define LBS_MAX_CHANNEL_TLV_SIZE \
 362         sizeof(struct mrvl_ie_header)
 363
 364 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 365 {
 366         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 367
 368         /*
 369          * 03 00  TLV_TYPE_PHY_DS
 370          * 01 00  len
 371          * 06     channel
 372          */
 373         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 374         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 375         ds->channel = channel;
 376         return sizeof(*ds);
 377 }
 378
 379
 380 /*
 381  * Add (empty) CF param TLV of the form:
 382  */
 383 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 384         sizeof(struct mrvl_ie_header)
 385
 386 static int lbs_add_cf_param_tlv(u8 *tlv)
 387 {
 388         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 389
 390         /*
 391          * 04 00  TLV_TYPE_CF
 392          * 06 00  len
 393          * 00     cfpcnt
 394          * 00     cfpperiod
 395          * 00 00  cfpmaxduration
 396          * 00 00  cfpdurationremaining
 397          */
 398         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 399         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 400         return sizeof(*cf);
 401 }
 402
 403 /*
 404  * Add WPA TLV
 405  */
 406 #define LBS_MAX_WPA_TLV_SIZE                    \
 407         (sizeof(struct mrvl_ie_header)          \
 408          + 128 /* TODO: I guessed the size */)
 409
 410 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 411 {
 412         size_t tlv_len;
 413
 414         /*
 415          * We need just convert an IE to an TLV. IEs use u8 for the header,
 416          *   u8      type
 417          *   u8      len
 418          *   u8[]    data
 419          * but TLVs use __le16 instead:
 420          *   __le16  type
 421          *   __le16  len
 422          *   u8[]    data
 423          */
 424         *tlv++ = *ie++;
 425         *tlv++ = 0;
 426         tlv_len = *tlv++ = *ie++;
 427         *tlv++ = 0;
 428         while (tlv_len--)
 429                 *tlv++ = *ie++;
 430         /* the TLV is two bytes larger than the IE */
 431         return ie_len + 2;
 432 }
 433
 434 /*
 435  * Set Channel
 436  */
 437
 438 static int lbs_cfg_set_channel(struct wiphy *wiphy,
 439         struct net_device *netdev,
 440         struct ieee80211_channel *channel,
 441         enum nl80211_channel_type channel_type)
 442 {
 443         struct lbs_private *priv = wiphy_priv(wiphy);
 444         int ret = -ENOTSUPP;
 445
 446         lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d, type %d",
 447                            netdev_name(netdev), channel->center_freq, channel_type);
 448
 449         if (channel_type != NL80211_CHAN_NO_HT)
 450                 goto out;
 451
 452         if (netdev == priv->mesh_dev)
 453                 ret = lbs_mesh_set_channel(priv, channel->hw_value);
 454         else
 455                 ret = lbs_set_channel(priv, channel->hw_value);
 456
 457  out:
 458         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 459         return ret;
 460 }
 461
 462
 463
 464 /*
 465  * Scanning
 466  */
 467
 468 /*
 469  * When scanning, the firmware doesn't send a nul packet with the power-safe
 470  * bit to the AP. So we cannot stay away from our current channel too long,
 471  * otherwise we loose data. So take a "nap" while scanning every other
 472  * while.
 473  */
 474 #define LBS_SCAN_BEFORE_NAP 4
 475
 476
 477 /*
 478  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 479  * which isn't really an RSSI, as it becomes larger when moving away from
 480  * the AP. Anyway, we need to convert that into mBm.
 481  */
 482 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 483         ((-(int)rssi + 3)*100)
 484
 485 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 486         struct cmd_header *resp)
 487 {
 488         struct cfg80211_bss *bss;
 489         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 490         int bsssize;
 491         const u8 *pos;
 492         const u8 *tsfdesc;
 493         int tsfsize;
 494         int i;
 495         int ret = -EILSEQ;
 496
 497         lbs_deb_enter(LBS_DEB_CFG80211);
 498
 499         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 500
 501         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 502                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 503
 504         if (scanresp->nr_sets == 0) {
 505                 ret = 0;
 506                 goto done;
 507         }
 508
 509         /*
 510          * The general layout of the scan response is described in chapter
 511          * 5.7.1. Basically we have a common part, then any number of BSS
 512          * descriptor sections. Finally we have section with the same number
 513          * of TSFs.
 514          *
 515          * cmd_ds_802_11_scan_rsp
 516          *   cmd_header
 517          *   pos_size
 518          *   nr_sets
 519          *   bssdesc 1
 520          *     bssid
 521          *     rssi
 522          *     timestamp
 523          *     intvl
 524          *     capa
 525          *     IEs
 526          *   bssdesc 2
 527          *   bssdesc n
 528          *   MrvlIEtypes_TsfFimestamp_t
 529          *     TSF for BSS 1
 530          *     TSF for BSS 2
 531          *     TSF for BSS n
 532          */
 533
 534         pos = scanresp->bssdesc_and_tlvbuffer;
 535
 536         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 537                         scanresp->bssdescriptsize);
 538
 539         tsfdesc = pos + bsssize;
 540         tsfsize = 4 + 8 * scanresp->nr_sets;
 541         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 542
 543         /* Validity check: we expect a Marvell-Local TLV */
 544         i = get_unaligned_le16(tsfdesc);
 545         tsfdesc += 2;
 546         if (i != TLV_TYPE_TSFTIMESTAMP) {
 547                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 548                 goto done;
 549         }
 550
 551         /*
 552          * Validity check: the TLV holds TSF values with 8 bytes each, so
 553          * the size in the TLV must match the nr_sets value
 554          */
 555         i = get_unaligned_le16(tsfdesc);
 556         tsfdesc += 2;
 557         if (i / 8 != scanresp->nr_sets) {
 558                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 559                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 560                              i / 8);
 561                 goto done;
 562         }
 563
 564         for (i = 0; i < scanresp->nr_sets; i++) {
 565                 const u8 *bssid;
 566                 const u8 *ie;
 567                 int left;
 568                 int ielen;
 569                 int rssi;
 570                 u16 intvl;
 571                 u16 capa;
 572                 int chan_no = -1;
 573                 const u8 *ssid = NULL;
 574                 u8 ssid_len = 0;
 575                 DECLARE_SSID_BUF(ssid_buf);
 576
 577                 int len = get_unaligned_le16(pos);
 578                 pos += 2;
 579
 580                 /* BSSID */
 581                 bssid = pos;
 582                 pos += ETH_ALEN;
 583                 /* RSSI */
 584                 rssi = *pos++;
 585                 /* Packet time stamp */
 586                 pos += 8;
 587                 /* Beacon interval */
 588                 intvl = get_unaligned_le16(pos);
 589                 pos += 2;
 590                 /* Capabilities */
 591                 capa = get_unaligned_le16(pos);
 592                 pos += 2;
 593
 594                 /* To find out the channel, we must parse the IEs */
 595                 ie = pos;
 596                 /*
 597                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 598                  * interval, capabilities
 599                  */
 600                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 601                 while (left >= 2) {
 602                         u8 id, elen;
 603                         id = *pos++;
 604                         elen = *pos++;
 605                         left -= 2;
 606                         if (elen > left || elen == 0) {
 607                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 608                                 goto done;
 609                         }
 610
 611                         if (id == WLAN_EID_DS_PARAMS)
 612                                 chan_no = *pos;
 613                         if (id == WLAN_EID_SSID) {
 614                                 ssid = pos;
 615                                 ssid_len = elen;
 616                         }
 617                         left -= elen;
 618                         pos += elen;
 619                 }
 620
 621                 /* No channel, no luck */
 622                 if (chan_no != -1) {
 623                         struct wiphy *wiphy = priv->wdev->wiphy;
 624                         int freq = ieee80211_channel_to_frequency(chan_no,
 625                                                         IEEE80211_BAND_2GHZ);
 626                         struct ieee80211_channel *channel =
 627                                 ieee80211_get_channel(wiphy, freq);
 628
 629                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 630                                      "%d dBm\n",
 631                                      bssid, capa, chan_no,
 632                                      print_ssid(ssid_buf, ssid, ssid_len),
 633                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 634
 635                         if (channel &&
 636                             !(channel->flags & IEEE80211_CHAN_DISABLED)) {
 637                                 bss = cfg80211_inform_bss(wiphy, channel,
 638                                         bssid, get_unaligned_le64(tsfdesc),
 639                                         capa, intvl, ie, ielen,
 640                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 641                                         GFP_KERNEL);
 642                                 cfg80211_put_bss(bss);
 643                         }
 644                 } else
 645                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 646
 647                 tsfdesc += 8;
 648         }
 649         ret = 0;
 650
 651  done:
 652         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 653         return ret;
 654 }
 655
 656
 657 /*
 658  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 659  * TLV and a rates TLV. Determine the maximum size of them:
 660  */
 661 #define LBS_SCAN_MAX_CMD_SIZE                   \
 662         (sizeof(struct cmd_ds_802_11_scan)      \
 663          + LBS_MAX_SSID_TLV_SIZE                \
 664          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 665          + LBS_MAX_RATES_TLV_SIZE)
 666
 667 /*
 668  * Assumes priv->scan_req is initialized and valid
 669  * Assumes priv->scan_channel is initialized
 670  */
 671 static void lbs_scan_worker(struct work_struct *work)
 672 {
 673         struct lbs_private *priv =
 674                 container_of(work, struct lbs_private, scan_work.work);
 675         struct cmd_ds_802_11_scan *scan_cmd;
 676         u8 *tlv; /* pointer into our current, growing TLV storage area */
 677         int last_channel;
 678         int running, carrier;
 679
 680         lbs_deb_enter(LBS_DEB_SCAN);
 681
 682         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 683         if (scan_cmd == NULL)
 684                 goto out_no_scan_cmd;
 685
 686         /* prepare fixed part of scan command */
 687         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 688
 689         /* stop network while we're away from our main channel */
 690         running = !netif_queue_stopped(priv->dev);
 691         carrier = netif_carrier_ok(priv->dev);
 692         if (running)
 693                 netif_stop_queue(priv->dev);
 694         if (carrier)
 695                 netif_carrier_off(priv->dev);
 696
 697         /* prepare fixed part of scan command */
 698         tlv = scan_cmd->tlvbuffer;
 699
 700         /* add SSID TLV */
 701         if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
 702                 tlv += lbs_add_ssid_tlv(tlv,
 703                                         priv->scan_req->ssids[0].ssid,
 704                                         priv->scan_req->ssids[0].ssid_len);
 705
 706         /* add channel TLVs */
 707         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 708         if (last_channel > priv->scan_req->n_channels)
 709                 last_channel = priv->scan_req->n_channels;
 710         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 711                 priv->scan_req->n_ssids);
 712
 713         /* add rates TLV */
 714         tlv += lbs_add_supported_rates_tlv(tlv);
 715
 716         if (priv->scan_channel < priv->scan_req->n_channels) {
 717                 cancel_delayed_work(&priv->scan_work);
 718                 if (netif_running(priv->dev))
 719                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 720                                 msecs_to_jiffies(300));
 721         }
 722
 723         /* This is the final data we are about to send */
 724         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 725         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 726                     sizeof(*scan_cmd));
 727         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 728                     tlv - scan_cmd->tlvbuffer);
 729
 730         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 731                 le16_to_cpu(scan_cmd->hdr.size),
 732                 lbs_ret_scan, 0);
 733
 734         if (priv->scan_channel >= priv->scan_req->n_channels) {
 735                 /* Mark scan done */
 736                 cancel_delayed_work(&priv->scan_work);
 737                 lbs_scan_done(priv);
 738         }
 739
 740         /* Restart network */
 741         if (carrier)
 742                 netif_carrier_on(priv->dev);
 743         if (running && !priv->tx_pending_len)
 744                 netif_wake_queue(priv->dev);
 745
 746         kfree(scan_cmd);
 747
 748         /* Wake up anything waiting on scan completion */
 749         if (priv->scan_req == NULL) {
 750                 lbs_deb_scan("scan: waking up waiters\n");
 751                 wake_up_all(&priv->scan_q);
 752         }
 753
 754  out_no_scan_cmd:
 755         lbs_deb_leave(LBS_DEB_SCAN);
 756 }
 757
 758 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 759         struct cfg80211_scan_request *request)
 760 {
 761         lbs_deb_enter(LBS_DEB_CFG80211);
 762
 763         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 764                 request->n_ssids, request->n_channels, request->ie_len);
 765
 766         priv->scan_channel = 0;
 767         priv->scan_req = request;
 768         priv->internal_scan = internal;
 769
 770         queue_delayed_work(priv->work_thread, &priv->scan_work,
 771                 msecs_to_jiffies(50));
 772
 773         lbs_deb_leave(LBS_DEB_CFG80211);
 774 }
 775
 776 /*
 777  * Clean up priv->scan_req.  Should be used to handle the allocation details.
 778  */
 779 void lbs_scan_done(struct lbs_private *priv)
 780 {
 781         WARN_ON(!priv->scan_req);
 782
 783         if (priv->internal_scan)
 784                 kfree(priv->scan_req);
 785         else
 786                 cfg80211_scan_done(priv->scan_req, false);
 787
 788         priv->scan_req = NULL;
 789 }
 790
 791 static int lbs_cfg_scan(struct wiphy *wiphy,
 792         struct net_device *dev,
 793         struct cfg80211_scan_request *request)
 794 {
 795         struct lbs_private *priv = wiphy_priv(wiphy);
 796         int ret = 0;
 797
 798         lbs_deb_enter(LBS_DEB_CFG80211);
 799
 800         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 801                 /* old scan request not yet processed */
 802                 ret = -EAGAIN;
 803                 goto out;
 804         }
 805
 806         _internal_start_scan(priv, false, request);
 807
 808         if (priv->surpriseremoved)
 809                 ret = -EIO;
 810
 811  out:
 812         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 813         return ret;
 814 }
 815
 816
 817
 818
 819 /*
 820  * Events
 821  */
 822
 823 void lbs_send_disconnect_notification(struct lbs_private *priv)
 824 {
 825         lbs_deb_enter(LBS_DEB_CFG80211);
 826
 827         cfg80211_disconnected(priv->dev,
 828                 0,
 829                 NULL, 0,
 830                 GFP_KERNEL);
 831
 832         lbs_deb_leave(LBS_DEB_CFG80211);
 833 }
 834
 835 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 836 {
 837         lbs_deb_enter(LBS_DEB_CFG80211);
 838
 839         cfg80211_michael_mic_failure(priv->dev,
 840                 priv->assoc_bss,
 841                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 842                         NL80211_KEYTYPE_GROUP :
 843                         NL80211_KEYTYPE_PAIRWISE,
 844                 -1,
 845                 NULL,
 846                 GFP_KERNEL);
 847
 848         lbs_deb_leave(LBS_DEB_CFG80211);
 849 }
 850
 851
 852
 853
 854 /*
 855  * Connect/disconnect
 856  */
 857
 858
 859 /*
 860  * This removes all WEP keys
 861  */
 862 static int lbs_remove_wep_keys(struct lbs_private *priv)
 863 {
 864         struct cmd_ds_802_11_set_wep cmd;
 865         int ret;
 866
 867         lbs_deb_enter(LBS_DEB_CFG80211);
 868
 869         memset(&cmd, 0, sizeof(cmd));
 870         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 871         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 872         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 873
 874         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 875
 876         lbs_deb_leave(LBS_DEB_CFG80211);
 877         return ret;
 878 }
 879
 880 /*
 881  * Set WEP keys
 882  */
 883 static int lbs_set_wep_keys(struct lbs_private *priv)
 884 {
 885         struct cmd_ds_802_11_set_wep cmd;
 886         int i;
 887         int ret;
 888
 889         lbs_deb_enter(LBS_DEB_CFG80211);
 890
 891         /*
 892          * command         13 00
 893          * size            50 00
 894          * sequence        xx xx
 895          * result          00 00
 896          * action          02 00     ACT_ADD
 897          * transmit key    00 00
 898          * type for key 1  01        WEP40
 899          * type for key 2  00
 900          * type for key 3  00
 901          * type for key 4  00
 902          * key 1           39 39 39 39 39 00 00 00
 903          *                 00 00 00 00 00 00 00 00
 904          * key 2           00 00 00 00 00 00 00 00
 905          *                 00 00 00 00 00 00 00 00
 906          * key 3           00 00 00 00 00 00 00 00
 907          *                 00 00 00 00 00 00 00 00
 908          * key 4           00 00 00 00 00 00 00 00
 909          */
 910         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 911             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 912                 /* Only set wep keys if we have at least one of them */
 913                 memset(&cmd, 0, sizeof(cmd));
 914                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 915                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 916                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 917
 918                 for (i = 0; i < 4; i++) {
 919                         switch (priv->wep_key_len[i]) {
 920                         case WLAN_KEY_LEN_WEP40:
 921                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 922                                 break;
 923                         case WLAN_KEY_LEN_WEP104:
 924                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 925                                 break;
 926                         default:
 927                                 cmd.keytype[i] = 0;
 928                                 break;
 929                         }
 930                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 931                                priv->wep_key_len[i]);
 932                 }
 933
 934                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 935         } else {
 936                 /* Otherwise remove all wep keys */
 937                 ret = lbs_remove_wep_keys(priv);
 938         }
 939
 940         lbs_deb_leave(LBS_DEB_CFG80211);
 941         return ret;
 942 }
 943
 944
 945 /*
 946  * Enable/Disable RSN status
 947  */
 948 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 949 {
 950         struct cmd_ds_802_11_enable_rsn cmd;
 951         int ret;
 952
 953         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 954
 955         /*
 956          * cmd       2f 00
 957          * size      0c 00
 958          * sequence  xx xx
 959          * result    00 00
 960          * action    01 00    ACT_SET
 961          * enable    01 00
 962          */
 963         memset(&cmd, 0, sizeof(cmd));
 964         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 965         cmd.action = cpu_to_le16(CMD_ACT_SET);
 966         cmd.enable = cpu_to_le16(enable);
 967
 968         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 969
 970         lbs_deb_leave(LBS_DEB_CFG80211);
 971         return ret;
 972 }
 973
 974
 975 /*
 976  * Set WPA/WPA key material
 977  */
 978
 979 /*
 980  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 981  * get rid of WEXT, this should go into host.h
 982  */
 983
 984 struct cmd_key_material {
 985         struct cmd_header hdr;
 986
 987         __le16 action;
 988         struct MrvlIEtype_keyParamSet param;
 989 } __packed;
 990
 991 static int lbs_set_key_material(struct lbs_private *priv,
 992                                 int key_type,
 993                                 int key_info,
 994                                 u8 *key, u16 key_len)
 995 {
 996         struct cmd_key_material cmd;
 997         int ret;
 998
 999         lbs_deb_enter(LBS_DEB_CFG80211);
1000
1001         /*
1002          * Example for WPA (TKIP):
1003          *
1004          * cmd       5e 00
1005          * size      34 00
1006          * sequence  xx xx
1007          * result    00 00
1008          * action    01 00
1009          * TLV type  00 01    key param
1010          * length    00 26
1011          * key type  01 00    TKIP
1012          * key info  06 00    UNICAST | ENABLED
1013          * key len   20 00
1014          * key       32 bytes
1015          */
1016         memset(&cmd, 0, sizeof(cmd));
1017         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1018         cmd.action = cpu_to_le16(CMD_ACT_SET);
1019         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1020         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1021         cmd.param.keytypeid = cpu_to_le16(key_type);
1022         cmd.param.keyinfo = cpu_to_le16(key_info);
1023         cmd.param.keylen = cpu_to_le16(key_len);
1024         if (key && key_len)
1025                 memcpy(cmd.param.key, key, key_len);
1026
1027         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1028
1029         lbs_deb_leave(LBS_DEB_CFG80211);
1030         return ret;
1031 }
1032
1033
1034 /*
1035  * Sets the auth type (open, shared, etc) in the firmware. That
1036  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1037  * command doesn't send an authentication frame at all, it just
1038  * stores the auth_type.
1039  */
1040 static int lbs_set_authtype(struct lbs_private *priv,
1041                             struct cfg80211_connect_params *sme)
1042 {
1043         struct cmd_ds_802_11_authenticate cmd;
1044         int ret;
1045
1046         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1047
1048         /*
1049          * cmd        11 00
1050          * size       19 00
1051          * sequence   xx xx
1052          * result     00 00
1053          * BSS id     00 13 19 80 da 30
1054          * auth type  00
1055          * reserved   00 00 00 00 00 00 00 00 00 00
1056          */
1057         memset(&cmd, 0, sizeof(cmd));
1058         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1059         if (sme->bssid)
1060                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1061         /* convert auth_type */
1062         ret = lbs_auth_to_authtype(sme->auth_type);
1063         if (ret < 0)
1064                 goto done;
1065
1066         cmd.authtype = ret;
1067         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1068
1069  done:
1070         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1071         return ret;
1072 }
1073
1074
1075 /*
1076  * Create association request
1077  */
1078 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1079         (sizeof(struct cmd_ds_802_11_associate)    \
1080          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1081          + LBS_MAX_SSID_TLV_SIZE                   \
1082          + LBS_MAX_CHANNEL_TLV_SIZE                \
1083          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1084          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1085          + LBS_MAX_WPA_TLV_SIZE)
1086
1087 static int lbs_associate(struct lbs_private *priv,
1088                 struct cfg80211_bss *bss,
1089                 struct cfg80211_connect_params *sme)
1090 {
1091         struct cmd_ds_802_11_associate_response *resp;
1092         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1093                                                       GFP_KERNEL);
1094         const u8 *ssid_eid;
1095         size_t len, resp_ie_len;
1096         int status;
1097         int ret;
1098         u8 *pos = &(cmd->iebuf[0]);
1099         u8 *tmp;
1100
1101         lbs_deb_enter(LBS_DEB_CFG80211);
1102
1103         if (!cmd) {
1104                 ret = -ENOMEM;
1105                 goto done;
1106         }
1107
1108         /*
1109          * cmd              50 00
1110          * length           34 00
1111          * sequence         xx xx
1112          * result           00 00
1113          * BSS id           00 13 19 80 da 30
1114          * capabilities     11 00
1115          * listen interval  0a 00
1116          * beacon interval  00 00
1117          * DTIM period      00
1118          * TLVs             xx   (up to 512 bytes)
1119          */
1120         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1121
1122         /* Fill in static fields */
1123         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1124         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1125         cmd->capability = cpu_to_le16(bss->capability);
1126
1127         /* add SSID TLV */
1128         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1129         if (ssid_eid)
1130                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1131         else
1132                 lbs_deb_assoc("no SSID\n");
1133
1134         /* add DS param TLV */
1135         if (bss->channel)
1136                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1137         else
1138                 lbs_deb_assoc("no channel\n");
1139
1140         /* add (empty) CF param TLV */
1141         pos += lbs_add_cf_param_tlv(pos);
1142
1143         /* add rates TLV */
1144         tmp = pos + 4; /* skip Marvell IE header */
1145         pos += lbs_add_common_rates_tlv(pos, bss);
1146         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1147
1148         /* add auth type TLV */
1149         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1150                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1151
1152         /* add WPA/WPA2 TLV */
1153         if (sme->ie && sme->ie_len)
1154                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1155
1156         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1157                 (u16)(pos - (u8 *) &cmd->iebuf);
1158         cmd->hdr.size = cpu_to_le16(len);
1159
1160         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1161                         le16_to_cpu(cmd->hdr.size));
1162
1163         /* store for later use */
1164         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1165
1166         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1167         if (ret)
1168                 goto done;
1169
1170         /* generate connect message to cfg80211 */
1171
1172         resp = (void *) cmd; /* recast for easier field access */
1173         status = le16_to_cpu(resp->statuscode);
1174
1175         /* Older FW versions map the IEEE 802.11 Status Code in the association
1176          * response to the following values returned in resp->statuscode:
1177          *
1178          *    IEEE Status Code                Marvell Status Code
1179          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1180          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1181          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1182          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1183          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1184          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1185          *
1186          * Other response codes:
1187          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1188          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1189          *                                    association response from the AP)
1190          */
1191         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1192                 switch (status) {
1193                 case 0:
1194                         break;
1195                 case 1:
1196                         lbs_deb_assoc("invalid association parameters\n");
1197                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1198                         break;
1199                 case 2:
1200                         lbs_deb_assoc("timer expired while waiting for AP\n");
1201                         status = WLAN_STATUS_AUTH_TIMEOUT;
1202                         break;
1203                 case 3:
1204                         lbs_deb_assoc("association refused by AP\n");
1205                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1206                         break;
1207                 case 4:
1208                         lbs_deb_assoc("authentication refused by AP\n");
1209                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1210                         break;
1211                 default:
1212                         lbs_deb_assoc("association failure %d\n", status);
1213                         /* v5 OLPC firmware does return the AP status code if
1214                          * it's not one of the values above.  Let that through.
1215                          */
1216                         break;
1217                 }
1218         }
1219
1220         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1221                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1222                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1223
1224         resp_ie_len = le16_to_cpu(resp->hdr.size)
1225                 - sizeof(resp->hdr)
1226                 - 6;
1227         cfg80211_connect_result(priv->dev,
1228                                 priv->assoc_bss,
1229                                 sme->ie, sme->ie_len,
1230                                 resp->iebuf, resp_ie_len,
1231                                 status,
1232                                 GFP_KERNEL);
1233
1234         if (status == 0) {
1235                 /* TODO: get rid of priv->connect_status */
1236                 priv->connect_status = LBS_CONNECTED;
1237                 netif_carrier_on(priv->dev);
1238                 if (!priv->tx_pending_len)
1239                         netif_tx_wake_all_queues(priv->dev);
1240         }
1241
1242 done:
1243         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1244         return ret;
1245 }
1246
1247 static struct cfg80211_scan_request *
1248 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1249 {
1250         struct cfg80211_scan_request *creq = NULL;
1251         int i, n_channels = 0;
1252         enum ieee80211_band band;
1253
1254         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1255                 if (wiphy->bands[band])
1256                         n_channels += wiphy->bands[band]->n_channels;
1257         }
1258
1259         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1260                        n_channels * sizeof(void *),
1261                        GFP_ATOMIC);
1262         if (!creq)
1263                 return NULL;
1264
1265         /* SSIDs come after channels */
1266         creq->ssids = (void *)&creq->channels[n_channels];
1267         creq->n_channels = n_channels;
1268         creq->n_ssids = 1;
1269
1270         /* Scan all available channels */
1271         i = 0;
1272         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1273                 int j;
1274
1275                 if (!wiphy->bands[band])
1276                         continue;
1277
1278                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1279                         /* ignore disabled channels */
1280                         if (wiphy->bands[band]->channels[j].flags &
1281                                                 IEEE80211_CHAN_DISABLED)
1282                                 continue;
1283
1284                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1285                         i++;
1286                 }
1287         }
1288         if (i) {
1289                 /* Set real number of channels specified in creq->channels[] */
1290                 creq->n_channels = i;
1291
1292                 /* Scan for the SSID we're going to connect to */
1293                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1294                 creq->ssids[0].ssid_len = sme->ssid_len;
1295         } else {
1296                 /* No channels found... */
1297                 kfree(creq);
1298                 creq = NULL;
1299         }
1300
1301         return creq;
1302 }
1303
1304 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1305                            struct cfg80211_connect_params *sme)
1306 {
1307         struct lbs_private *priv = wiphy_priv(wiphy);
1308         struct cfg80211_bss *bss = NULL;
1309         int ret = 0;
1310         u8 preamble = RADIO_PREAMBLE_SHORT;
1311
1312         if (dev == priv->mesh_dev)
1313                 return -EOPNOTSUPP;
1314
1315         lbs_deb_enter(LBS_DEB_CFG80211);
1316
1317         if (!sme->bssid) {
1318                 struct cfg80211_scan_request *creq;
1319
1320                 /*
1321                  * Scan for the requested network after waiting for existing
1322                  * scans to finish.
1323                  */
1324                 lbs_deb_assoc("assoc: waiting for existing scans\n");
1325                 wait_event_interruptible_timeout(priv->scan_q,
1326                                                  (priv->scan_req == NULL),
1327                                                  (15 * HZ));
1328
1329                 creq = _new_connect_scan_req(wiphy, sme);
1330                 if (!creq) {
1331                         ret = -EINVAL;
1332                         goto done;
1333                 }
1334
1335                 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1336                 _internal_start_scan(priv, true, creq);
1337
1338                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1339                 wait_event_interruptible_timeout(priv->scan_q,
1340                                                  (priv->scan_req == NULL),
1341                                                  (15 * HZ));
1342                 lbs_deb_assoc("assoc: scanning competed\n");
1343         }
1344
1345         /* Find the BSS we want using available scan results */
1346         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1347                 sme->ssid, sme->ssid_len,
1348                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1349         if (!bss) {
1350                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1351                           sme->bssid);
1352                 ret = -ENOENT;
1353                 goto done;
1354         }
1355         lbs_deb_assoc("trying %pM\n", bss->bssid);
1356         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1357                       sme->crypto.cipher_group,
1358                       sme->key_idx, sme->key_len);
1359
1360         /* As this is a new connection, clear locally stored WEP keys */
1361         priv->wep_tx_key = 0;
1362         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1363         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1364
1365         /* set/remove WEP keys */
1366         switch (sme->crypto.cipher_group) {
1367         case WLAN_CIPHER_SUITE_WEP40:
1368         case WLAN_CIPHER_SUITE_WEP104:
1369                 /* Store provided WEP keys in priv-> */
1370                 priv->wep_tx_key = sme->key_idx;
1371                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1372                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1373                 /* Set WEP keys and WEP mode */
1374                 lbs_set_wep_keys(priv);
1375                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1376                 lbs_set_mac_control(priv);
1377                 /* No RSN mode for WEP */
1378                 lbs_enable_rsn(priv, 0);
1379                 break;
1380         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1381                 /*
1382                  * If we don't have no WEP, no WPA and no WPA2,
1383                  * we remove all keys like in the WPA/WPA2 setup,
1384                  * we just don't set RSN.
1385                  *
1386                  * Therefore: fall-through
1387                  */
1388         case WLAN_CIPHER_SUITE_TKIP:
1389         case WLAN_CIPHER_SUITE_CCMP:
1390                 /* Remove WEP keys and WEP mode */
1391                 lbs_remove_wep_keys(priv);
1392                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1393                 lbs_set_mac_control(priv);
1394
1395                 /* clear the WPA/WPA2 keys */
1396                 lbs_set_key_material(priv,
1397                         KEY_TYPE_ID_WEP, /* doesn't matter */
1398                         KEY_INFO_WPA_UNICAST,
1399                         NULL, 0);
1400                 lbs_set_key_material(priv,
1401                         KEY_TYPE_ID_WEP, /* doesn't matter */
1402                         KEY_INFO_WPA_MCAST,
1403                         NULL, 0);
1404                 /* RSN mode for WPA/WPA2 */
1405                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1406                 break;
1407         default:
1408                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1409                           sme->crypto.cipher_group);
1410                 ret = -ENOTSUPP;
1411                 goto done;
1412         }
1413
1414         ret = lbs_set_authtype(priv, sme);
1415         if (ret == -ENOTSUPP) {
1416                 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1417                 goto done;
1418         }
1419
1420         lbs_set_radio(priv, preamble, 1);
1421
1422         /* Do the actual association */
1423         ret = lbs_associate(priv, bss, sme);
1424
1425  done:
1426         if (bss)
1427                 cfg80211_put_bss(bss);
1428         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1429         return ret;
1430 }
1431
1432 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1433 {
1434         struct cmd_ds_802_11_deauthenticate cmd;
1435         int ret;
1436
1437         memset(&cmd, 0, sizeof(cmd));
1438         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1439         /* Mildly ugly to use a locally store my own BSSID ... */
1440         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1441         cmd.reasoncode = cpu_to_le16(reason);
1442
1443         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1444         if (ret)
1445                 return ret;
1446
1447         cfg80211_disconnected(priv->dev,
1448                         reason,
1449                         NULL, 0,
1450                         GFP_KERNEL);
1451         priv->connect_status = LBS_DISCONNECTED;
1452
1453         return 0;
1454 }
1455
1456 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1457         u16 reason_code)
1458 {
1459         struct lbs_private *priv = wiphy_priv(wiphy);
1460
1461         if (dev == priv->mesh_dev)
1462                 return -EOPNOTSUPP;
1463
1464         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1465
1466         /* store for lbs_cfg_ret_disconnect() */
1467         priv->disassoc_reason = reason_code;
1468
1469         return lbs_disconnect(priv, reason_code);
1470 }
1471
1472 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1473                                    struct net_device *netdev,
1474                                    u8 key_index, bool unicast,
1475                                    bool multicast)
1476 {
1477         struct lbs_private *priv = wiphy_priv(wiphy);
1478
1479         if (netdev == priv->mesh_dev)
1480                 return -EOPNOTSUPP;
1481
1482         lbs_deb_enter(LBS_DEB_CFG80211);
1483
1484         if (key_index != priv->wep_tx_key) {
1485                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1486                 priv->wep_tx_key = key_index;
1487                 lbs_set_wep_keys(priv);
1488         }
1489
1490         return 0;
1491 }
1492
1493
1494 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1495                            u8 idx, bool pairwise, const u8 *mac_addr,
1496                            struct key_params *params)
1497 {
1498         struct lbs_private *priv = wiphy_priv(wiphy);
1499         u16 key_info;
1500         u16 key_type;
1501         int ret = 0;
1502
1503         if (netdev == priv->mesh_dev)
1504                 return -EOPNOTSUPP;
1505
1506         lbs_deb_enter(LBS_DEB_CFG80211);
1507
1508         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1509                       params->cipher, mac_addr);
1510         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1511                       idx, params->key_len);
1512         if (params->key_len)
1513                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1514                             params->key, params->key_len);
1515
1516         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1517         if (params->seq_len)
1518                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1519                             params->seq, params->seq_len);
1520
1521         switch (params->cipher) {
1522         case WLAN_CIPHER_SUITE_WEP40:
1523         case WLAN_CIPHER_SUITE_WEP104:
1524                 /* actually compare if something has changed ... */
1525                 if ((priv->wep_key_len[idx] != params->key_len) ||
1526                         memcmp(priv->wep_key[idx],
1527                                params->key, params->key_len) != 0) {
1528                         priv->wep_key_len[idx] = params->key_len;
1529                         memcpy(priv->wep_key[idx],
1530                                params->key, params->key_len);
1531                         lbs_set_wep_keys(priv);
1532                 }
1533                 break;
1534         case WLAN_CIPHER_SUITE_TKIP:
1535         case WLAN_CIPHER_SUITE_CCMP:
1536                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1537                                                    ? KEY_INFO_WPA_UNICAST
1538                                                    : KEY_INFO_WPA_MCAST);
1539                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1540                         ? KEY_TYPE_ID_TKIP
1541                         : KEY_TYPE_ID_AES;
1542                 lbs_set_key_material(priv,
1543                                      key_type,
1544                                      key_info,
1545                                      params->key, params->key_len);
1546                 break;
1547         default:
1548                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1549                 ret = -ENOTSUPP;
1550                 break;
1551         }
1552
1553         return ret;
1554 }
1555
1556
1557 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1558                            u8 key_index, bool pairwise, const u8 *mac_addr)
1559 {
1560
1561         lbs_deb_enter(LBS_DEB_CFG80211);
1562
1563         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1564                       key_index, mac_addr);
1565
1566 #ifdef TODO
1567         struct lbs_private *priv = wiphy_priv(wiphy);
1568         /*
1569          * I think can keep this a NO-OP, because:
1570
1571          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1572          * - neither "iw" nor "wpa_supplicant" won't call this during
1573          *   an ongoing connection
1574          * - TODO: but I have to check if this is still true when
1575          *   I set the AP to periodic re-keying
1576          * - we've not kzallec() something when we've added a key at
1577          *   lbs_cfg_connect() or lbs_cfg_add_key().
1578          *
1579          * This causes lbs_cfg_del_key() only called at disconnect time,
1580          * where we'd just waste time deleting a key that is not going
1581          * to be used anyway.
1582          */
1583         if (key_index < 3 && priv->wep_key_len[key_index]) {
1584                 priv->wep_key_len[key_index] = 0;
1585                 lbs_set_wep_keys(priv);
1586         }
1587 #endif
1588
1589         return 0;
1590 }
1591
1592
1593 /*
1594  * Get station
1595  */
1596
1597 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1598                               u8 *mac, struct station_info *sinfo)
1599 {
1600         struct lbs_private *priv = wiphy_priv(wiphy);
1601         s8 signal, noise;
1602         int ret;
1603         size_t i;
1604
1605         lbs_deb_enter(LBS_DEB_CFG80211);
1606
1607         sinfo->filled |= STATION_INFO_TX_BYTES |
1608                          STATION_INFO_TX_PACKETS |
1609                          STATION_INFO_RX_BYTES |
1610                          STATION_INFO_RX_PACKETS;
1611         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1612         sinfo->tx_packets = priv->dev->stats.tx_packets;
1613         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1614         sinfo->rx_packets = priv->dev->stats.rx_packets;
1615
1616         /* Get current RSSI */
1617         ret = lbs_get_rssi(priv, &signal, &noise);
1618         if (ret == 0) {
1619                 sinfo->signal = signal;
1620                 sinfo->filled |= STATION_INFO_SIGNAL;
1621         }
1622
1623         /* Convert priv->cur_rate from hw_value to NL80211 value */
1624         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1625                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1626                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1627                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1628                         break;
1629                 }
1630         }
1631
1632         return 0;
1633 }
1634
1635
1636
1637
1638 /*
1639  * Change interface
1640  */
1641
1642 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1643         enum nl80211_iftype type, u32 *flags,
1644                struct vif_params *params)
1645 {
1646         struct lbs_private *priv = wiphy_priv(wiphy);
1647         int ret = 0;
1648
1649         if (dev == priv->mesh_dev)
1650                 return -EOPNOTSUPP;
1651
1652         switch (type) {
1653         case NL80211_IFTYPE_MONITOR:
1654         case NL80211_IFTYPE_STATION:
1655         case NL80211_IFTYPE_ADHOC:
1656                 break;
1657         default:
1658                 return -EOPNOTSUPP;
1659         }
1660
1661         lbs_deb_enter(LBS_DEB_CFG80211);
1662
1663         if (priv->iface_running)
1664                 ret = lbs_set_iface_type(priv, type);
1665
1666         if (!ret)
1667                 priv->wdev->iftype = type;
1668
1669         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1670         return ret;
1671 }
1672
1673
1674
1675 /*
1676  * IBSS (Ad-Hoc)
1677  */
1678
1679 /*
1680  * The firmware needs the following bits masked out of the beacon-derived
1681  * capability field when associating/joining to a BSS:
1682  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1683  */
1684 #define CAPINFO_MASK (~(0xda00))
1685
1686
1687 static void lbs_join_post(struct lbs_private *priv,
1688                           struct cfg80211_ibss_params *params,
1689                           u8 *bssid, u16 capability)
1690 {
1691         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1692                    2 + 4 +                      /* basic rates */
1693                    2 + 1 +                      /* DS parameter */
1694                    2 + 2 +                      /* atim */
1695                    2 + 8];                      /* extended rates */
1696         u8 *fake = fake_ie;
1697         struct cfg80211_bss *bss;
1698
1699         lbs_deb_enter(LBS_DEB_CFG80211);
1700
1701         /*
1702          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1703          * the real IE from the firmware. So we fabricate a fake IE based on
1704          * what the firmware actually sends (sniffed with wireshark).
1705          */
1706         /* Fake SSID IE */
1707         *fake++ = WLAN_EID_SSID;
1708         *fake++ = params->ssid_len;
1709         memcpy(fake, params->ssid, params->ssid_len);
1710         fake += params->ssid_len;
1711         /* Fake supported basic rates IE */
1712         *fake++ = WLAN_EID_SUPP_RATES;
1713         *fake++ = 4;
1714         *fake++ = 0x82;
1715         *fake++ = 0x84;
1716         *fake++ = 0x8b;
1717         *fake++ = 0x96;
1718         /* Fake DS channel IE */
1719         *fake++ = WLAN_EID_DS_PARAMS;
1720         *fake++ = 1;
1721         *fake++ = params->channel->hw_value;
1722         /* Fake IBSS params IE */
1723         *fake++ = WLAN_EID_IBSS_PARAMS;
1724         *fake++ = 2;
1725         *fake++ = 0; /* ATIM=0 */
1726         *fake++ = 0;
1727         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1728          * but I don't know how this could be checked */
1729         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1730         *fake++ = 8;
1731         *fake++ = 0x0c;
1732         *fake++ = 0x12;
1733         *fake++ = 0x18;
1734         *fake++ = 0x24;
1735         *fake++ = 0x30;
1736         *fake++ = 0x48;
1737         *fake++ = 0x60;
1738         *fake++ = 0x6c;
1739         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1740
1741         bss = cfg80211_inform_bss(priv->wdev->wiphy,
1742                                   params->channel,
1743                                   bssid,
1744                                   0,
1745                                   capability,
1746                                   params->beacon_interval,
1747                                   fake_ie, fake - fake_ie,
1748                                   0, GFP_KERNEL);
1749         cfg80211_put_bss(bss);
1750
1751         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1752         priv->wdev->ssid_len = params->ssid_len;
1753
1754         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1755
1756         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1757         priv->connect_status = LBS_CONNECTED;
1758         netif_carrier_on(priv->dev);
1759         if (!priv->tx_pending_len)
1760                 netif_wake_queue(priv->dev);
1761
1762         lbs_deb_leave(LBS_DEB_CFG80211);
1763 }
1764
1765 static int lbs_ibss_join_existing(struct lbs_private *priv,
1766         struct cfg80211_ibss_params *params,
1767         struct cfg80211_bss *bss)
1768 {
1769         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1770         struct cmd_ds_802_11_ad_hoc_join cmd;
1771         u8 preamble = RADIO_PREAMBLE_SHORT;
1772         int ret = 0;
1773
1774         lbs_deb_enter(LBS_DEB_CFG80211);
1775
1776         /* TODO: set preamble based on scan result */
1777         ret = lbs_set_radio(priv, preamble, 1);
1778         if (ret)
1779                 goto out;
1780
1781         /*
1782          * Example CMD_802_11_AD_HOC_JOIN command:
1783          *
1784          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1785          * size            65 00
1786          * sequence        xx xx
1787          * result          00 00
1788          * bssid           02 27 27 97 2f 96
1789          * ssid            49 42 53 53 00 00 00 00
1790          *                 00 00 00 00 00 00 00 00
1791          *                 00 00 00 00 00 00 00 00
1792          *                 00 00 00 00 00 00 00 00
1793          * type            02            CMD_BSS_TYPE_IBSS
1794          * beacon period   64 00
1795          * dtim period     00
1796          * timestamp       00 00 00 00 00 00 00 00
1797          * localtime       00 00 00 00 00 00 00 00
1798          * IE DS           03
1799          * IE DS len       01
1800          * IE DS channel   01
1801          * reserveed       00 00 00 00
1802          * IE IBSS         06
1803          * IE IBSS len     02
1804          * IE IBSS atim    00 00
1805          * reserved        00 00 00 00
1806          * capability      02 00
1807          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1808          * fail timeout    ff 00
1809          * probe delay     00 00
1810          */
1811         memset(&cmd, 0, sizeof(cmd));
1812         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1813
1814         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1815         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1816         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1817         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1818         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1819         cmd.bss.ds.header.len = 1;
1820         cmd.bss.ds.channel = params->channel->hw_value;
1821         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1822         cmd.bss.ibss.header.len = 2;
1823         cmd.bss.ibss.atimwindow = 0;
1824         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1825
1826         /* set rates to the intersection of our rates and the rates in the
1827            bss */
1828         if (!rates_eid) {
1829                 lbs_add_rates(cmd.bss.rates);
1830         } else {
1831                 int hw, i;
1832                 u8 rates_max = rates_eid[1];
1833                 u8 *rates = cmd.bss.rates;
1834                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1835                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1836                         for (i = 0; i < rates_max; i++) {
1837                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1838                                         u8 rate = rates_eid[i+2];
1839                                         if (rate == 0x02 || rate == 0x04 ||
1840                                             rate == 0x0b || rate == 0x16)
1841                                                 rate |= 0x80;
1842                                         *rates++ = rate;
1843                                 }
1844                         }
1845                 }
1846         }
1847
1848         /* Only v8 and below support setting this */
1849         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1850                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1851                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1852         }
1853         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1854         if (ret)
1855                 goto out;
1856
1857         /*
1858          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1859          *
1860          * response        2c 80
1861          * size            09 00
1862          * sequence        xx xx
1863          * result          00 00
1864          * reserved        00
1865          */
1866         lbs_join_post(priv, params, bss->bssid, bss->capability);
1867
1868  out:
1869         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1870         return ret;
1871 }
1872
1873
1874
1875 static int lbs_ibss_start_new(struct lbs_private *priv,
1876         struct cfg80211_ibss_params *params)
1877 {
1878         struct cmd_ds_802_11_ad_hoc_start cmd;
1879         struct cmd_ds_802_11_ad_hoc_result *resp =
1880                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1881         u8 preamble = RADIO_PREAMBLE_SHORT;
1882         int ret = 0;
1883         u16 capability;
1884
1885         lbs_deb_enter(LBS_DEB_CFG80211);
1886
1887         ret = lbs_set_radio(priv, preamble, 1);
1888         if (ret)
1889                 goto out;
1890
1891         /*
1892          * Example CMD_802_11_AD_HOC_START command:
1893          *
1894          * command         2b 00         CMD_802_11_AD_HOC_START
1895          * size            b1 00
1896          * sequence        xx xx
1897          * result          00 00
1898          * ssid            54 45 53 54 00 00 00 00
1899          *                 00 00 00 00 00 00 00 00
1900          *                 00 00 00 00 00 00 00 00
1901          *                 00 00 00 00 00 00 00 00
1902          * bss type        02
1903          * beacon period   64 00
1904          * dtim period     00
1905          * IE IBSS         06
1906          * IE IBSS len     02
1907          * IE IBSS atim    00 00
1908          * reserved        00 00 00 00
1909          * IE DS           03
1910          * IE DS len       01
1911          * IE DS channel   01
1912          * reserved        00 00 00 00
1913          * probe delay     00 00
1914          * capability      02 00
1915          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1916          *                 0c 12 18 24 30 48 60 6c
1917          * padding         100 bytes
1918          */
1919         memset(&cmd, 0, sizeof(cmd));
1920         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1921         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1922         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1923         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1924         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1925         cmd.ibss.header.len = 2;
1926         cmd.ibss.atimwindow = 0;
1927         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1928         cmd.ds.header.len = 1;
1929         cmd.ds.channel = params->channel->hw_value;
1930         /* Only v8 and below support setting probe delay */
1931         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1932                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1933         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1934         capability = WLAN_CAPABILITY_IBSS;
1935         cmd.capability = cpu_to_le16(capability);
1936         lbs_add_rates(cmd.rates);
1937
1938
1939         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1940         if (ret)
1941                 goto out;
1942
1943         /*
1944          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1945          *
1946          * response        2b 80
1947          * size            14 00
1948          * sequence        xx xx
1949          * result          00 00
1950          * reserved        00
1951          * bssid           02 2b 7b 0f 86 0e
1952          */
1953         lbs_join_post(priv, params, resp->bssid, capability);
1954
1955  out:
1956         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1957         return ret;
1958 }
1959
1960
1961 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1962                 struct cfg80211_ibss_params *params)
1963 {
1964         struct lbs_private *priv = wiphy_priv(wiphy);
1965         int ret = 0;
1966         struct cfg80211_bss *bss;
1967         DECLARE_SSID_BUF(ssid_buf);
1968
1969         if (dev == priv->mesh_dev)
1970                 return -EOPNOTSUPP;
1971
1972         lbs_deb_enter(LBS_DEB_CFG80211);
1973
1974         if (!params->channel) {
1975                 ret = -ENOTSUPP;
1976                 goto out;
1977         }
1978
1979         ret = lbs_set_channel(priv, params->channel->hw_value);
1980         if (ret)
1981                 goto out;
1982
1983         /* Search if someone is beaconing. This assumes that the
1984          * bss list is populated already */
1985         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
1986                 params->ssid, params->ssid_len,
1987                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
1988
1989         if (bss) {
1990                 ret = lbs_ibss_join_existing(priv, params, bss);
1991                 cfg80211_put_bss(bss);
1992         } else
1993                 ret = lbs_ibss_start_new(priv, params);
1994
1995
1996  out:
1997         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1998         return ret;
1999 }
2000
2001
2002 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2003 {
2004         struct lbs_private *priv = wiphy_priv(wiphy);
2005         struct cmd_ds_802_11_ad_hoc_stop cmd;
2006         int ret = 0;
2007
2008         if (dev == priv->mesh_dev)
2009                 return -EOPNOTSUPP;
2010
2011         lbs_deb_enter(LBS_DEB_CFG80211);
2012
2013         memset(&cmd, 0, sizeof(cmd));
2014         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2015         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2016
2017         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2018         lbs_mac_event_disconnected(priv);
2019
2020         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2021         return ret;
2022 }
2023
2024
2025
2026
2027 /*
2028  * Initialization
2029  */
2030
2031 static struct cfg80211_ops lbs_cfg80211_ops = {
2032         .set_channel = lbs_cfg_set_channel,
2033         .scan = lbs_cfg_scan,
2034         .connect = lbs_cfg_connect,
2035         .disconnect = lbs_cfg_disconnect,
2036         .add_key = lbs_cfg_add_key,
2037         .del_key = lbs_cfg_del_key,
2038         .set_default_key = lbs_cfg_set_default_key,
2039         .get_station = lbs_cfg_get_station,
2040         .change_virtual_intf = lbs_change_intf,
2041         .join_ibss = lbs_join_ibss,
2042         .leave_ibss = lbs_leave_ibss,
2043 };
2044
2045
2046 /*
2047  * At this time lbs_private *priv doesn't even exist, so we just allocate
2048  * memory and don't initialize the wiphy further. This is postponed until we
2049  * can talk to the firmware and happens at registration time in
2050  * lbs_cfg_wiphy_register().
2051  */
2052 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2053 {
2054         int ret = 0;
2055         struct wireless_dev *wdev;
2056
2057         lbs_deb_enter(LBS_DEB_CFG80211);
2058
2059         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2060         if (!wdev) {
2061                 dev_err(dev, "cannot allocate wireless device\n");
2062                 return ERR_PTR(-ENOMEM);
2063         }
2064
2065         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2066         if (!wdev->wiphy) {
2067                 dev_err(dev, "cannot allocate wiphy\n");
2068                 ret = -ENOMEM;
2069                 goto err_wiphy_new;
2070         }
2071
2072         lbs_deb_leave(LBS_DEB_CFG80211);
2073         return wdev;
2074
2075  err_wiphy_new:
2076         kfree(wdev);
2077         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2078         return ERR_PTR(ret);
2079 }
2080
2081
2082 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2083 {
2084         struct region_code_mapping {
2085                 const char *cn;
2086                 int code;
2087         };
2088
2089         /* Section 5.17.2 */
2090         static const struct region_code_mapping regmap[] = {
2091                 {"US ", 0x10}, /* US FCC */
2092                 {"CA ", 0x20}, /* Canada */
2093                 {"EU ", 0x30}, /* ETSI   */
2094                 {"ES ", 0x31}, /* Spain  */
2095                 {"FR ", 0x32}, /* France */
2096                 {"JP ", 0x40}, /* Japan  */
2097         };
2098         size_t i;
2099
2100         lbs_deb_enter(LBS_DEB_CFG80211);
2101
2102         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2103                 if (regmap[i].code == priv->regioncode) {
2104                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2105                         break;
2106                 }
2107
2108         lbs_deb_leave(LBS_DEB_CFG80211);
2109 }
2110
2111
2112 /*
2113  * This function get's called after lbs_setup_firmware() determined the
2114  * firmware capabities. So we can setup the wiphy according to our
2115  * hardware/firmware.
2116  */
2117 int lbs_cfg_register(struct lbs_private *priv)
2118 {
2119         struct wireless_dev *wdev = priv->wdev;
2120         int ret;
2121
2122         lbs_deb_enter(LBS_DEB_CFG80211);
2123
2124         wdev->wiphy->max_scan_ssids = 1;
2125         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2126
2127         wdev->wiphy->interface_modes =
2128                         BIT(NL80211_IFTYPE_STATION) |
2129                         BIT(NL80211_IFTYPE_ADHOC);
2130         if (lbs_rtap_supported(priv))
2131                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2132         if (lbs_mesh_activated(priv))
2133                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2134
2135         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2136
2137         /*
2138          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2139          * never seen a firmware without WPA
2140          */
2141         wdev->wiphy->cipher_suites = cipher_suites;
2142         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2143         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2144
2145         ret = wiphy_register(wdev->wiphy);
2146         if (ret < 0)
2147                 pr_err("cannot register wiphy device\n");
2148
2149         priv->wiphy_registered = true;
2150
2151         ret = register_netdev(priv->dev);
2152         if (ret)
2153                 pr_err("cannot register network device\n");
2154
2155         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2156
2157         lbs_cfg_set_regulatory_hint(priv);
2158
2159         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2160         return ret;
2161 }
2162
2163 int lbs_reg_notifier(struct wiphy *wiphy,
2164                 struct regulatory_request *request)
2165 {
2166         struct lbs_private *priv = wiphy_priv(wiphy);
2167         int ret;
2168
2169         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2170                         "callback for domain %c%c\n", request->alpha2[0],
2171                         request->alpha2[1]);
2172
2173         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2174
2175         lbs_deb_leave(LBS_DEB_CFG80211);
2176         return ret;
2177 }
2178
2179 void lbs_scan_deinit(struct lbs_private *priv)
2180 {
2181         lbs_deb_enter(LBS_DEB_CFG80211);
2182         cancel_delayed_work_sync(&priv->scan_work);
2183 }
2184
2185
2186 void lbs_cfg_free(struct lbs_private *priv)
2187 {
2188         struct wireless_dev *wdev = priv->wdev;
2189
2190         lbs_deb_enter(LBS_DEB_CFG80211);
2191
2192         if (!wdev)
2193                 return;
2194
2195         if (priv->wiphy_registered)
2196                 wiphy_unregister(wdev->wiphy);
2197
2198         if (wdev->wiphy)
2199                 wiphy_free(wdev->wiphy);
2200
2201         kfree(wdev);
2202 }