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