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 u8 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 cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 489         int bsssize;
 490         const u8 *pos;
 491         const u8 *tsfdesc;
 492         int tsfsize;
 493         int i;
 494         int ret = -EILSEQ;
 495
 496         lbs_deb_enter(LBS_DEB_CFG80211);
 497
 498         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 499
 500         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 501                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 502
 503         if (scanresp->nr_sets == 0) {
 504                 ret = 0;
 505                 goto done;
 506         }
 507
 508         /*
 509          * The general layout of the scan response is described in chapter
 510          * 5.7.1. Basically we have a common part, then any number of BSS
 511          * descriptor sections. Finally we have section with the same number
 512          * of TSFs.
 513          *
 514          * cmd_ds_802_11_scan_rsp
 515          *   cmd_header
 516          *   pos_size
 517          *   nr_sets
 518          *   bssdesc 1
 519          *     bssid
 520          *     rssi
 521          *     timestamp
 522          *     intvl
 523          *     capa
 524          *     IEs
 525          *   bssdesc 2
 526          *   bssdesc n
 527          *   MrvlIEtypes_TsfFimestamp_t
 528          *     TSF for BSS 1
 529          *     TSF for BSS 2
 530          *     TSF for BSS n
 531          */
 532
 533         pos = scanresp->bssdesc_and_tlvbuffer;
 534
 535         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 536                         scanresp->bssdescriptsize);
 537
 538         tsfdesc = pos + bsssize;
 539         tsfsize = 4 + 8 * scanresp->nr_sets;
 540         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 541
 542         /* Validity check: we expect a Marvell-Local TLV */
 543         i = get_unaligned_le16(tsfdesc);
 544         tsfdesc += 2;
 545         if (i != TLV_TYPE_TSFTIMESTAMP) {
 546                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 547                 goto done;
 548         }
 549
 550         /*
 551          * Validity check: the TLV holds TSF values with 8 bytes each, so
 552          * the size in the TLV must match the nr_sets value
 553          */
 554         i = get_unaligned_le16(tsfdesc);
 555         tsfdesc += 2;
 556         if (i / 8 != scanresp->nr_sets) {
 557                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 558                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 559                              i / 8);
 560                 goto done;
 561         }
 562
 563         for (i = 0; i < scanresp->nr_sets; i++) {
 564                 const u8 *bssid;
 565                 const u8 *ie;
 566                 int left;
 567                 int ielen;
 568                 int rssi;
 569                 u16 intvl;
 570                 u16 capa;
 571                 int chan_no = -1;
 572                 const u8 *ssid = NULL;
 573                 u8 ssid_len = 0;
 574                 DECLARE_SSID_BUF(ssid_buf);
 575
 576                 int len = get_unaligned_le16(pos);
 577                 pos += 2;
 578
 579                 /* BSSID */
 580                 bssid = pos;
 581                 pos += ETH_ALEN;
 582                 /* RSSI */
 583                 rssi = *pos++;
 584                 /* Packet time stamp */
 585                 pos += 8;
 586                 /* Beacon interval */
 587                 intvl = get_unaligned_le16(pos);
 588                 pos += 2;
 589                 /* Capabilities */
 590                 capa = get_unaligned_le16(pos);
 591                 pos += 2;
 592
 593                 /* To find out the channel, we must parse the IEs */
 594                 ie = pos;
 595                 /*
 596                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 597                  * interval, capabilities
 598                  */
 599                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 600                 while (left >= 2) {
 601                         u8 id, elen;
 602                         id = *pos++;
 603                         elen = *pos++;
 604                         left -= 2;
 605                         if (elen > left || elen == 0) {
 606                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 607                                 goto done;
 608                         }
 609
 610                         if (id == WLAN_EID_DS_PARAMS)
 611                                 chan_no = *pos;
 612                         if (id == WLAN_EID_SSID) {
 613                                 ssid = pos;
 614                                 ssid_len = elen;
 615                         }
 616                         left -= elen;
 617                         pos += elen;
 618                 }
 619
 620                 /* No channel, no luck */
 621                 if (chan_no != -1) {
 622                         struct wiphy *wiphy = priv->wdev->wiphy;
 623                         int freq = ieee80211_channel_to_frequency(chan_no,
 624                                                         IEEE80211_BAND_2GHZ);
 625                         struct ieee80211_channel *channel =
 626                                 ieee80211_get_channel(wiphy, freq);
 627
 628                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
 629                                      "%d dBm\n",
 630                                      bssid, capa, chan_no,
 631                                      print_ssid(ssid_buf, ssid, ssid_len),
 632                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 633
 634                         if (channel &&
 635                             !(channel->flags & IEEE80211_CHAN_DISABLED))
 636                                 cfg80211_inform_bss(wiphy, channel,
 637                                         bssid, le64_to_cpu(*(__le64 *)tsfdesc),
 638                                         capa, intvl, ie, ielen,
 639                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 640                                         GFP_KERNEL);
 641                 } else
 642                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 643
 644                 tsfdesc += 8;
 645         }
 646         ret = 0;
 647
 648  done:
 649         lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
 650         return ret;
 651 }
 652
 653
 654 /*
 655  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 656  * TLV and a rates TLV. Determine the maximum size of them:
 657  */
 658 #define LBS_SCAN_MAX_CMD_SIZE                   \
 659         (sizeof(struct cmd_ds_802_11_scan)      \
 660          + LBS_MAX_SSID_TLV_SIZE                \
 661          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 662          + LBS_MAX_RATES_TLV_SIZE)
 663
 664 /*
 665  * Assumes priv->scan_req is initialized and valid
 666  * Assumes priv->scan_channel is initialized
 667  */
 668 static void lbs_scan_worker(struct work_struct *work)
 669 {
 670         struct lbs_private *priv =
 671                 container_of(work, struct lbs_private, scan_work.work);
 672         struct cmd_ds_802_11_scan *scan_cmd;
 673         u8 *tlv; /* pointer into our current, growing TLV storage area */
 674         int last_channel;
 675         int running, carrier;
 676
 677         lbs_deb_enter(LBS_DEB_SCAN);
 678
 679         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 680         if (scan_cmd == NULL)
 681                 goto out_no_scan_cmd;
 682
 683         /* prepare fixed part of scan command */
 684         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 685
 686         /* stop network while we're away from our main channel */
 687         running = !netif_queue_stopped(priv->dev);
 688         carrier = netif_carrier_ok(priv->dev);
 689         if (running)
 690                 netif_stop_queue(priv->dev);
 691         if (carrier)
 692                 netif_carrier_off(priv->dev);
 693
 694         /* prepare fixed part of scan command */
 695         tlv = scan_cmd->tlvbuffer;
 696
 697         /* add SSID TLV */
 698         if (priv->scan_req->n_ssids)
 699                 tlv += lbs_add_ssid_tlv(tlv,
 700                                         priv->scan_req->ssids[0].ssid,
 701                                         priv->scan_req->ssids[0].ssid_len);
 702
 703         /* add channel TLVs */
 704         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 705         if (last_channel > priv->scan_req->n_channels)
 706                 last_channel = priv->scan_req->n_channels;
 707         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 708                 priv->scan_req->n_ssids);
 709
 710         /* add rates TLV */
 711         tlv += lbs_add_supported_rates_tlv(tlv);
 712
 713         if (priv->scan_channel < priv->scan_req->n_channels) {
 714                 cancel_delayed_work(&priv->scan_work);
 715                 if (netif_running(priv->dev))
 716                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 717                                 msecs_to_jiffies(300));
 718         }
 719
 720         /* This is the final data we are about to send */
 721         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 722         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 723                     sizeof(*scan_cmd));
 724         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 725                     tlv - scan_cmd->tlvbuffer);
 726
 727         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 728                 le16_to_cpu(scan_cmd->hdr.size),
 729                 lbs_ret_scan, 0);
 730
 731         if (priv->scan_channel >= priv->scan_req->n_channels) {
 732                 /* Mark scan done */
 733                 if (priv->internal_scan)
 734                         kfree(priv->scan_req);
 735                 else
 736                         cfg80211_scan_done(priv->scan_req, false);
 737
 738                 priv->scan_req = NULL;
 739                 priv->last_scan = jiffies;
 740         }
 741
 742         /* Restart network */
 743         if (carrier)
 744                 netif_carrier_on(priv->dev);
 745         if (running && !priv->tx_pending_len)
 746                 netif_wake_queue(priv->dev);
 747
 748         kfree(scan_cmd);
 749
 750         /* Wake up anything waiting on scan completion */
 751         if (priv->scan_req == NULL) {
 752                 lbs_deb_scan("scan: waking up waiters\n");
 753                 wake_up_all(&priv->scan_q);
 754         }
 755
 756  out_no_scan_cmd:
 757         lbs_deb_leave(LBS_DEB_SCAN);
 758 }
 759
 760 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 761         struct cfg80211_scan_request *request)
 762 {
 763         lbs_deb_enter(LBS_DEB_CFG80211);
 764
 765         lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
 766                 request->n_ssids, request->n_channels, request->ie_len);
 767
 768         priv->scan_channel = 0;
 769         queue_delayed_work(priv->work_thread, &priv->scan_work,
 770                 msecs_to_jiffies(50));
 771
 772         priv->scan_req = request;
 773         priv->internal_scan = internal;
 774
 775         lbs_deb_leave(LBS_DEB_CFG80211);
 776 }
 777
 778 static int lbs_cfg_scan(struct wiphy *wiphy,
 779         struct net_device *dev,
 780         struct cfg80211_scan_request *request)
 781 {
 782         struct lbs_private *priv = wiphy_priv(wiphy);
 783         int ret = 0;
 784
 785         lbs_deb_enter(LBS_DEB_CFG80211);
 786
 787         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 788                 /* old scan request not yet processed */
 789                 ret = -EAGAIN;
 790                 goto out;
 791         }
 792
 793         _internal_start_scan(priv, false, request);
 794
 795         if (priv->surpriseremoved)
 796                 ret = -EIO;
 797
 798  out:
 799         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
 800         return ret;
 801 }
 802
 803
 804
 805
 806 /*
 807  * Events
 808  */
 809
 810 void lbs_send_disconnect_notification(struct lbs_private *priv)
 811 {
 812         lbs_deb_enter(LBS_DEB_CFG80211);
 813
 814         cfg80211_disconnected(priv->dev,
 815                 0,
 816                 NULL, 0,
 817                 GFP_KERNEL);
 818
 819         lbs_deb_leave(LBS_DEB_CFG80211);
 820 }
 821
 822 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 823 {
 824         lbs_deb_enter(LBS_DEB_CFG80211);
 825
 826         cfg80211_michael_mic_failure(priv->dev,
 827                 priv->assoc_bss,
 828                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 829                         NL80211_KEYTYPE_GROUP :
 830                         NL80211_KEYTYPE_PAIRWISE,
 831                 -1,
 832                 NULL,
 833                 GFP_KERNEL);
 834
 835         lbs_deb_leave(LBS_DEB_CFG80211);
 836 }
 837
 838
 839
 840
 841 /*
 842  * Connect/disconnect
 843  */
 844
 845
 846 /*
 847  * This removes all WEP keys
 848  */
 849 static int lbs_remove_wep_keys(struct lbs_private *priv)
 850 {
 851         struct cmd_ds_802_11_set_wep cmd;
 852         int ret;
 853
 854         lbs_deb_enter(LBS_DEB_CFG80211);
 855
 856         memset(&cmd, 0, sizeof(cmd));
 857         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 858         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 859         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 860
 861         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 862
 863         lbs_deb_leave(LBS_DEB_CFG80211);
 864         return ret;
 865 }
 866
 867 /*
 868  * Set WEP keys
 869  */
 870 static int lbs_set_wep_keys(struct lbs_private *priv)
 871 {
 872         struct cmd_ds_802_11_set_wep cmd;
 873         int i;
 874         int ret;
 875
 876         lbs_deb_enter(LBS_DEB_CFG80211);
 877
 878         /*
 879          * command         13 00
 880          * size            50 00
 881          * sequence        xx xx
 882          * result          00 00
 883          * action          02 00     ACT_ADD
 884          * transmit key    00 00
 885          * type for key 1  01        WEP40
 886          * type for key 2  00
 887          * type for key 3  00
 888          * type for key 4  00
 889          * key 1           39 39 39 39 39 00 00 00
 890          *                 00 00 00 00 00 00 00 00
 891          * key 2           00 00 00 00 00 00 00 00
 892          *                 00 00 00 00 00 00 00 00
 893          * key 3           00 00 00 00 00 00 00 00
 894          *                 00 00 00 00 00 00 00 00
 895          * key 4           00 00 00 00 00 00 00 00
 896          */
 897         if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
 898             priv->wep_key_len[2] || priv->wep_key_len[3]) {
 899                 /* Only set wep keys if we have at least one of them */
 900                 memset(&cmd, 0, sizeof(cmd));
 901                 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 902                 cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 903                 cmd.action = cpu_to_le16(CMD_ACT_ADD);
 904
 905                 for (i = 0; i < 4; i++) {
 906                         switch (priv->wep_key_len[i]) {
 907                         case WLAN_KEY_LEN_WEP40:
 908                                 cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
 909                                 break;
 910                         case WLAN_KEY_LEN_WEP104:
 911                                 cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
 912                                 break;
 913                         default:
 914                                 cmd.keytype[i] = 0;
 915                                 break;
 916                         }
 917                         memcpy(cmd.keymaterial[i], priv->wep_key[i],
 918                                priv->wep_key_len[i]);
 919                 }
 920
 921                 ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 922         } else {
 923                 /* Otherwise remove all wep keys */
 924                 ret = lbs_remove_wep_keys(priv);
 925         }
 926
 927         lbs_deb_leave(LBS_DEB_CFG80211);
 928         return ret;
 929 }
 930
 931
 932 /*
 933  * Enable/Disable RSN status
 934  */
 935 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 936 {
 937         struct cmd_ds_802_11_enable_rsn cmd;
 938         int ret;
 939
 940         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
 941
 942         /*
 943          * cmd       2f 00
 944          * size      0c 00
 945          * sequence  xx xx
 946          * result    00 00
 947          * action    01 00    ACT_SET
 948          * enable    01 00
 949          */
 950         memset(&cmd, 0, sizeof(cmd));
 951         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 952         cmd.action = cpu_to_le16(CMD_ACT_SET);
 953         cmd.enable = cpu_to_le16(enable);
 954
 955         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 956
 957         lbs_deb_leave(LBS_DEB_CFG80211);
 958         return ret;
 959 }
 960
 961
 962 /*
 963  * Set WPA/WPA key material
 964  */
 965
 966 /*
 967  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 968  * get rid of WEXT, this should go into host.h
 969  */
 970
 971 struct cmd_key_material {
 972         struct cmd_header hdr;
 973
 974         __le16 action;
 975         struct MrvlIEtype_keyParamSet param;
 976 } __packed;
 977
 978 static int lbs_set_key_material(struct lbs_private *priv,
 979                                 int key_type,
 980                                 int key_info,
 981                                 u8 *key, u16 key_len)
 982 {
 983         struct cmd_key_material cmd;
 984         int ret;
 985
 986         lbs_deb_enter(LBS_DEB_CFG80211);
 987
 988         /*
 989          * Example for WPA (TKIP):
 990          *
 991          * cmd       5e 00
 992          * size      34 00
 993          * sequence  xx xx
 994          * result    00 00
 995          * action    01 00
 996          * TLV type  00 01    key param
 997          * length    00 26
 998          * key type  01 00    TKIP
 999          * key info  06 00    UNICAST | ENABLED
1000          * key len   20 00
1001          * key       32 bytes
1002          */
1003         memset(&cmd, 0, sizeof(cmd));
1004         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1005         cmd.action = cpu_to_le16(CMD_ACT_SET);
1006         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1007         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1008         cmd.param.keytypeid = cpu_to_le16(key_type);
1009         cmd.param.keyinfo = cpu_to_le16(key_info);
1010         cmd.param.keylen = cpu_to_le16(key_len);
1011         if (key && key_len)
1012                 memcpy(cmd.param.key, key, key_len);
1013
1014         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1015
1016         lbs_deb_leave(LBS_DEB_CFG80211);
1017         return ret;
1018 }
1019
1020
1021 /*
1022  * Sets the auth type (open, shared, etc) in the firmware. That
1023  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1024  * command doesn't send an authentication frame at all, it just
1025  * stores the auth_type.
1026  */
1027 static int lbs_set_authtype(struct lbs_private *priv,
1028                             struct cfg80211_connect_params *sme)
1029 {
1030         struct cmd_ds_802_11_authenticate cmd;
1031         int ret;
1032
1033         lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
1034
1035         /*
1036          * cmd        11 00
1037          * size       19 00
1038          * sequence   xx xx
1039          * result     00 00
1040          * BSS id     00 13 19 80 da 30
1041          * auth type  00
1042          * reserved   00 00 00 00 00 00 00 00 00 00
1043          */
1044         memset(&cmd, 0, sizeof(cmd));
1045         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1046         if (sme->bssid)
1047                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1048         /* convert auth_type */
1049         ret = lbs_auth_to_authtype(sme->auth_type);
1050         if (ret < 0)
1051                 goto done;
1052
1053         cmd.authtype = ret;
1054         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1055
1056  done:
1057         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1058         return ret;
1059 }
1060
1061
1062 /*
1063  * Create association request
1064  */
1065 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1066         (sizeof(struct cmd_ds_802_11_associate)    \
1067          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1068          + LBS_MAX_SSID_TLV_SIZE                   \
1069          + LBS_MAX_CHANNEL_TLV_SIZE                \
1070          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1071          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1072          + LBS_MAX_WPA_TLV_SIZE)
1073
1074 static int lbs_associate(struct lbs_private *priv,
1075                 struct cfg80211_bss *bss,
1076                 struct cfg80211_connect_params *sme)
1077 {
1078         struct cmd_ds_802_11_associate_response *resp;
1079         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1080                                                       GFP_KERNEL);
1081         const u8 *ssid_eid;
1082         size_t len, resp_ie_len;
1083         int status;
1084         int ret;
1085         u8 *pos = &(cmd->iebuf[0]);
1086         u8 *tmp;
1087
1088         lbs_deb_enter(LBS_DEB_CFG80211);
1089
1090         if (!cmd) {
1091                 ret = -ENOMEM;
1092                 goto done;
1093         }
1094
1095         /*
1096          * cmd              50 00
1097          * length           34 00
1098          * sequence         xx xx
1099          * result           00 00
1100          * BSS id           00 13 19 80 da 30
1101          * capabilities     11 00
1102          * listen interval  0a 00
1103          * beacon interval  00 00
1104          * DTIM period      00
1105          * TLVs             xx   (up to 512 bytes)
1106          */
1107         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1108
1109         /* Fill in static fields */
1110         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1111         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1112         cmd->capability = cpu_to_le16(bss->capability);
1113
1114         /* add SSID TLV */
1115         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1116         if (ssid_eid)
1117                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1118         else
1119                 lbs_deb_assoc("no SSID\n");
1120
1121         /* add DS param TLV */
1122         if (bss->channel)
1123                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1124         else
1125                 lbs_deb_assoc("no channel\n");
1126
1127         /* add (empty) CF param TLV */
1128         pos += lbs_add_cf_param_tlv(pos);
1129
1130         /* add rates TLV */
1131         tmp = pos + 4; /* skip Marvell IE header */
1132         pos += lbs_add_common_rates_tlv(pos, bss);
1133         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1134
1135         /* add auth type TLV */
1136         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1137                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1138
1139         /* add WPA/WPA2 TLV */
1140         if (sme->ie && sme->ie_len)
1141                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1142
1143         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1144                 (u16)(pos - (u8 *) &cmd->iebuf);
1145         cmd->hdr.size = cpu_to_le16(len);
1146
1147         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1148                         le16_to_cpu(cmd->hdr.size));
1149
1150         /* store for later use */
1151         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1152
1153         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1154         if (ret)
1155                 goto done;
1156
1157         /* generate connect message to cfg80211 */
1158
1159         resp = (void *) cmd; /* recast for easier field access */
1160         status = le16_to_cpu(resp->statuscode);
1161
1162         /* Older FW versions map the IEEE 802.11 Status Code in the association
1163          * response to the following values returned in resp->statuscode:
1164          *
1165          *    IEEE Status Code                Marvell Status Code
1166          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1167          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1168          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1169          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1170          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1171          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1172          *
1173          * Other response codes:
1174          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1175          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1176          *                                    association response from the AP)
1177          */
1178         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1179                 switch (status) {
1180                 case 0:
1181                         break;
1182                 case 1:
1183                         lbs_deb_assoc("invalid association parameters\n");
1184                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1185                         break;
1186                 case 2:
1187                         lbs_deb_assoc("timer expired while waiting for AP\n");
1188                         status = WLAN_STATUS_AUTH_TIMEOUT;
1189                         break;
1190                 case 3:
1191                         lbs_deb_assoc("association refused by AP\n");
1192                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1193                         break;
1194                 case 4:
1195                         lbs_deb_assoc("authentication refused by AP\n");
1196                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1197                         break;
1198                 default:
1199                         lbs_deb_assoc("association failure %d\n", status);
1200                         /* v5 OLPC firmware does return the AP status code if
1201                          * it's not one of the values above.  Let that through.
1202                          */
1203                         break;
1204                 }
1205         }
1206
1207         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1208                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1209                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1210
1211         resp_ie_len = le16_to_cpu(resp->hdr.size)
1212                 - sizeof(resp->hdr)
1213                 - 6;
1214         cfg80211_connect_result(priv->dev,
1215                                 priv->assoc_bss,
1216                                 sme->ie, sme->ie_len,
1217                                 resp->iebuf, resp_ie_len,
1218                                 status,
1219                                 GFP_KERNEL);
1220
1221         if (status == 0) {
1222                 /* TODO: get rid of priv->connect_status */
1223                 priv->connect_status = LBS_CONNECTED;
1224                 netif_carrier_on(priv->dev);
1225                 if (!priv->tx_pending_len)
1226                         netif_tx_wake_all_queues(priv->dev);
1227         }
1228
1229 done:
1230         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1231         return ret;
1232 }
1233
1234 static struct cfg80211_scan_request *
1235 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1236 {
1237         struct cfg80211_scan_request *creq = NULL;
1238         int i, n_channels = 0;
1239         enum ieee80211_band band;
1240
1241         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1242                 if (wiphy->bands[band])
1243                         n_channels += wiphy->bands[band]->n_channels;
1244         }
1245
1246         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1247                        n_channels * sizeof(void *),
1248                        GFP_ATOMIC);
1249         if (!creq)
1250                 return NULL;
1251
1252         /* SSIDs come after channels */
1253         creq->ssids = (void *)&creq->channels[n_channels];
1254         creq->n_channels = n_channels;
1255         creq->n_ssids = 1;
1256
1257         /* Scan all available channels */
1258         i = 0;
1259         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1260                 int j;
1261
1262                 if (!wiphy->bands[band])
1263                         continue;
1264
1265                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1266                         /* ignore disabled channels */
1267                         if (wiphy->bands[band]->channels[j].flags &
1268                                                 IEEE80211_CHAN_DISABLED)
1269                                 continue;
1270
1271                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1272                         i++;
1273                 }
1274         }
1275         if (i) {
1276                 /* Set real number of channels specified in creq->channels[] */
1277                 creq->n_channels = i;
1278
1279                 /* Scan for the SSID we're going to connect to */
1280                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1281                 creq->ssids[0].ssid_len = sme->ssid_len;
1282         } else {
1283                 /* No channels found... */
1284                 kfree(creq);
1285                 creq = NULL;
1286         }
1287
1288         return creq;
1289 }
1290
1291 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1292                            struct cfg80211_connect_params *sme)
1293 {
1294         struct lbs_private *priv = wiphy_priv(wiphy);
1295         struct cfg80211_bss *bss = NULL;
1296         int ret = 0;
1297         u8 preamble = RADIO_PREAMBLE_SHORT;
1298
1299         if (dev == priv->mesh_dev)
1300                 return -EOPNOTSUPP;
1301
1302         lbs_deb_enter(LBS_DEB_CFG80211);
1303
1304         if (!sme->bssid) {
1305                 /* Run a scan if one isn't in-progress already and if the last
1306                  * scan was done more than 2 seconds ago.
1307                  */
1308                 if (priv->scan_req == NULL &&
1309                     time_after(jiffies, priv->last_scan + (2 * HZ))) {
1310                         struct cfg80211_scan_request *creq;
1311
1312                         creq = _new_connect_scan_req(wiphy, sme);
1313                         if (!creq) {
1314                                 ret = -EINVAL;
1315                                 goto done;
1316                         }
1317
1318                         lbs_deb_assoc("assoc: scanning for compatible AP\n");
1319                         _internal_start_scan(priv, true, creq);
1320                 }
1321
1322                 /* Wait for any in-progress scan to complete */
1323                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1324                 wait_event_interruptible_timeout(priv->scan_q,
1325                                                  (priv->scan_req == NULL),
1326                                                  (15 * HZ));
1327                 lbs_deb_assoc("assoc: scanning competed\n");
1328         }
1329
1330         /* Find the BSS we want using available scan results */
1331         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1332                 sme->ssid, sme->ssid_len,
1333                 WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
1334         if (!bss) {
1335                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1336                           sme->bssid);
1337                 ret = -ENOENT;
1338                 goto done;
1339         }
1340         lbs_deb_assoc("trying %pM\n", bss->bssid);
1341         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1342                       sme->crypto.cipher_group,
1343                       sme->key_idx, sme->key_len);
1344
1345         /* As this is a new connection, clear locally stored WEP keys */
1346         priv->wep_tx_key = 0;
1347         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1348         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1349
1350         /* set/remove WEP keys */
1351         switch (sme->crypto.cipher_group) {
1352         case WLAN_CIPHER_SUITE_WEP40:
1353         case WLAN_CIPHER_SUITE_WEP104:
1354                 /* Store provided WEP keys in priv-> */
1355                 priv->wep_tx_key = sme->key_idx;
1356                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1357                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1358                 /* Set WEP keys and WEP mode */
1359                 lbs_set_wep_keys(priv);
1360                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1361                 lbs_set_mac_control(priv);
1362                 /* No RSN mode for WEP */
1363                 lbs_enable_rsn(priv, 0);
1364                 break;
1365         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1366                 /*
1367                  * If we don't have no WEP, no WPA and no WPA2,
1368                  * we remove all keys like in the WPA/WPA2 setup,
1369                  * we just don't set RSN.
1370                  *
1371                  * Therefore: fall-through
1372                  */
1373         case WLAN_CIPHER_SUITE_TKIP:
1374         case WLAN_CIPHER_SUITE_CCMP:
1375                 /* Remove WEP keys and WEP mode */
1376                 lbs_remove_wep_keys(priv);
1377                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1378                 lbs_set_mac_control(priv);
1379
1380                 /* clear the WPA/WPA2 keys */
1381                 lbs_set_key_material(priv,
1382                         KEY_TYPE_ID_WEP, /* doesn't matter */
1383                         KEY_INFO_WPA_UNICAST,
1384                         NULL, 0);
1385                 lbs_set_key_material(priv,
1386                         KEY_TYPE_ID_WEP, /* doesn't matter */
1387                         KEY_INFO_WPA_MCAST,
1388                         NULL, 0);
1389                 /* RSN mode for WPA/WPA2 */
1390                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1391                 break;
1392         default:
1393                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1394                           sme->crypto.cipher_group);
1395                 ret = -ENOTSUPP;
1396                 goto done;
1397         }
1398
1399         lbs_set_authtype(priv, sme);
1400         lbs_set_radio(priv, preamble, 1);
1401
1402         /* Do the actual association */
1403         ret = lbs_associate(priv, bss, sme);
1404
1405  done:
1406         if (bss)
1407                 cfg80211_put_bss(bss);
1408         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1409         return ret;
1410 }
1411
1412 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1413 {
1414         struct cmd_ds_802_11_deauthenticate cmd;
1415         int ret;
1416
1417         memset(&cmd, 0, sizeof(cmd));
1418         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1419         /* Mildly ugly to use a locally store my own BSSID ... */
1420         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1421         cmd.reasoncode = cpu_to_le16(reason);
1422
1423         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1424         if (ret)
1425                 return ret;
1426
1427         cfg80211_disconnected(priv->dev,
1428                         reason,
1429                         NULL, 0,
1430                         GFP_KERNEL);
1431         priv->connect_status = LBS_DISCONNECTED;
1432
1433         return 0;
1434 }
1435
1436 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1437         u16 reason_code)
1438 {
1439         struct lbs_private *priv = wiphy_priv(wiphy);
1440
1441         if (dev == priv->mesh_dev)
1442                 return -EOPNOTSUPP;
1443
1444         lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
1445
1446         /* store for lbs_cfg_ret_disconnect() */
1447         priv->disassoc_reason = reason_code;
1448
1449         return lbs_disconnect(priv, reason_code);
1450 }
1451
1452 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1453                                    struct net_device *netdev,
1454                                    u8 key_index, bool unicast,
1455                                    bool multicast)
1456 {
1457         struct lbs_private *priv = wiphy_priv(wiphy);
1458
1459         if (netdev == priv->mesh_dev)
1460                 return -EOPNOTSUPP;
1461
1462         lbs_deb_enter(LBS_DEB_CFG80211);
1463
1464         if (key_index != priv->wep_tx_key) {
1465                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1466                 priv->wep_tx_key = key_index;
1467                 lbs_set_wep_keys(priv);
1468         }
1469
1470         return 0;
1471 }
1472
1473
1474 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1475                            u8 idx, bool pairwise, const u8 *mac_addr,
1476                            struct key_params *params)
1477 {
1478         struct lbs_private *priv = wiphy_priv(wiphy);
1479         u16 key_info;
1480         u16 key_type;
1481         int ret = 0;
1482
1483         if (netdev == priv->mesh_dev)
1484                 return -EOPNOTSUPP;
1485
1486         lbs_deb_enter(LBS_DEB_CFG80211);
1487
1488         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1489                       params->cipher, mac_addr);
1490         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1491                       idx, params->key_len);
1492         if (params->key_len)
1493                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1494                             params->key, params->key_len);
1495
1496         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1497         if (params->seq_len)
1498                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1499                             params->seq, params->seq_len);
1500
1501         switch (params->cipher) {
1502         case WLAN_CIPHER_SUITE_WEP40:
1503         case WLAN_CIPHER_SUITE_WEP104:
1504                 /* actually compare if something has changed ... */
1505                 if ((priv->wep_key_len[idx] != params->key_len) ||
1506                         memcmp(priv->wep_key[idx],
1507                                params->key, params->key_len) != 0) {
1508                         priv->wep_key_len[idx] = params->key_len;
1509                         memcpy(priv->wep_key[idx],
1510                                params->key, params->key_len);
1511                         lbs_set_wep_keys(priv);
1512                 }
1513                 break;
1514         case WLAN_CIPHER_SUITE_TKIP:
1515         case WLAN_CIPHER_SUITE_CCMP:
1516                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1517                                                    ? KEY_INFO_WPA_UNICAST
1518                                                    : KEY_INFO_WPA_MCAST);
1519                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1520                         ? KEY_TYPE_ID_TKIP
1521                         : KEY_TYPE_ID_AES;
1522                 lbs_set_key_material(priv,
1523                                      key_type,
1524                                      key_info,
1525                                      params->key, params->key_len);
1526                 break;
1527         default:
1528                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1529                 ret = -ENOTSUPP;
1530                 break;
1531         }
1532
1533         return ret;
1534 }
1535
1536
1537 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1538                            u8 key_index, bool pairwise, const u8 *mac_addr)
1539 {
1540
1541         lbs_deb_enter(LBS_DEB_CFG80211);
1542
1543         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1544                       key_index, mac_addr);
1545
1546 #ifdef TODO
1547         struct lbs_private *priv = wiphy_priv(wiphy);
1548         /*
1549          * I think can keep this a NO-OP, because:
1550
1551          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1552          * - neither "iw" nor "wpa_supplicant" won't call this during
1553          *   an ongoing connection
1554          * - TODO: but I have to check if this is still true when
1555          *   I set the AP to periodic re-keying
1556          * - we've not kzallec() something when we've added a key at
1557          *   lbs_cfg_connect() or lbs_cfg_add_key().
1558          *
1559          * This causes lbs_cfg_del_key() only called at disconnect time,
1560          * where we'd just waste time deleting a key that is not going
1561          * to be used anyway.
1562          */
1563         if (key_index < 3 && priv->wep_key_len[key_index]) {
1564                 priv->wep_key_len[key_index] = 0;
1565                 lbs_set_wep_keys(priv);
1566         }
1567 #endif
1568
1569         return 0;
1570 }
1571
1572
1573 /*
1574  * Get station
1575  */
1576
1577 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1578                               u8 *mac, struct station_info *sinfo)
1579 {
1580         struct lbs_private *priv = wiphy_priv(wiphy);
1581         s8 signal, noise;
1582         int ret;
1583         size_t i;
1584
1585         lbs_deb_enter(LBS_DEB_CFG80211);
1586
1587         sinfo->filled |= STATION_INFO_TX_BYTES |
1588                          STATION_INFO_TX_PACKETS |
1589                          STATION_INFO_RX_BYTES |
1590                          STATION_INFO_RX_PACKETS;
1591         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1592         sinfo->tx_packets = priv->dev->stats.tx_packets;
1593         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1594         sinfo->rx_packets = priv->dev->stats.rx_packets;
1595
1596         /* Get current RSSI */
1597         ret = lbs_get_rssi(priv, &signal, &noise);
1598         if (ret == 0) {
1599                 sinfo->signal = signal;
1600                 sinfo->filled |= STATION_INFO_SIGNAL;
1601         }
1602
1603         /* Convert priv->cur_rate from hw_value to NL80211 value */
1604         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1605                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1606                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1607                         sinfo->filled |= STATION_INFO_TX_BITRATE;
1608                         break;
1609                 }
1610         }
1611
1612         return 0;
1613 }
1614
1615
1616
1617
1618 /*
1619  * "Site survey", here just current channel and noise level
1620  */
1621
1622 static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
1623         int idx, struct survey_info *survey)
1624 {
1625         struct lbs_private *priv = wiphy_priv(wiphy);
1626         s8 signal, noise;
1627         int ret;
1628
1629         if (dev == priv->mesh_dev)
1630                 return -EOPNOTSUPP;
1631
1632         if (idx != 0)
1633                 ret = -ENOENT;
1634
1635         lbs_deb_enter(LBS_DEB_CFG80211);
1636
1637         survey->channel = ieee80211_get_channel(wiphy,
1638                 ieee80211_channel_to_frequency(priv->channel,
1639                                                IEEE80211_BAND_2GHZ));
1640
1641         ret = lbs_get_rssi(priv, &signal, &noise);
1642         if (ret == 0) {
1643                 survey->filled = SURVEY_INFO_NOISE_DBM;
1644                 survey->noise = noise;
1645         }
1646
1647         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1648         return ret;
1649 }
1650
1651
1652
1653
1654 /*
1655  * Change interface
1656  */
1657
1658 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1659         enum nl80211_iftype type, u32 *flags,
1660                struct vif_params *params)
1661 {
1662         struct lbs_private *priv = wiphy_priv(wiphy);
1663         int ret = 0;
1664
1665         if (dev == priv->mesh_dev)
1666                 return -EOPNOTSUPP;
1667
1668         lbs_deb_enter(LBS_DEB_CFG80211);
1669
1670         switch (type) {
1671         case NL80211_IFTYPE_MONITOR:
1672                 ret = lbs_set_monitor_mode(priv, 1);
1673                 break;
1674         case NL80211_IFTYPE_STATION:
1675                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1676                         ret = lbs_set_monitor_mode(priv, 0);
1677                 if (!ret)
1678                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 1);
1679                 break;
1680         case NL80211_IFTYPE_ADHOC:
1681                 if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR)
1682                         ret = lbs_set_monitor_mode(priv, 0);
1683                 if (!ret)
1684                         ret = lbs_set_snmp_mib(priv, SNMP_MIB_OID_BSS_TYPE, 2);
1685                 break;
1686         default:
1687                 ret = -ENOTSUPP;
1688         }
1689
1690         if (!ret)
1691                 priv->wdev->iftype = type;
1692
1693         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1694         return ret;
1695 }
1696
1697
1698
1699 /*
1700  * IBSS (Ad-Hoc)
1701  */
1702
1703 /*
1704  * The firmware needs the following bits masked out of the beacon-derived
1705  * capability field when associating/joining to a BSS:
1706  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1707  */
1708 #define CAPINFO_MASK (~(0xda00))
1709
1710
1711 static void lbs_join_post(struct lbs_private *priv,
1712                           struct cfg80211_ibss_params *params,
1713                           u8 *bssid, u16 capability)
1714 {
1715         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1716                    2 + 4 +                      /* basic rates */
1717                    2 + 1 +                      /* DS parameter */
1718                    2 + 2 +                      /* atim */
1719                    2 + 8];                      /* extended rates */
1720         u8 *fake = fake_ie;
1721
1722         lbs_deb_enter(LBS_DEB_CFG80211);
1723
1724         /*
1725          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1726          * the real IE from the firmware. So we fabricate a fake IE based on
1727          * what the firmware actually sends (sniffed with wireshark).
1728          */
1729         /* Fake SSID IE */
1730         *fake++ = WLAN_EID_SSID;
1731         *fake++ = params->ssid_len;
1732         memcpy(fake, params->ssid, params->ssid_len);
1733         fake += params->ssid_len;
1734         /* Fake supported basic rates IE */
1735         *fake++ = WLAN_EID_SUPP_RATES;
1736         *fake++ = 4;
1737         *fake++ = 0x82;
1738         *fake++ = 0x84;
1739         *fake++ = 0x8b;
1740         *fake++ = 0x96;
1741         /* Fake DS channel IE */
1742         *fake++ = WLAN_EID_DS_PARAMS;
1743         *fake++ = 1;
1744         *fake++ = params->channel->hw_value;
1745         /* Fake IBSS params IE */
1746         *fake++ = WLAN_EID_IBSS_PARAMS;
1747         *fake++ = 2;
1748         *fake++ = 0; /* ATIM=0 */
1749         *fake++ = 0;
1750         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1751          * but I don't know how this could be checked */
1752         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1753         *fake++ = 8;
1754         *fake++ = 0x0c;
1755         *fake++ = 0x12;
1756         *fake++ = 0x18;
1757         *fake++ = 0x24;
1758         *fake++ = 0x30;
1759         *fake++ = 0x48;
1760         *fake++ = 0x60;
1761         *fake++ = 0x6c;
1762         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1763
1764         cfg80211_inform_bss(priv->wdev->wiphy,
1765                             params->channel,
1766                             bssid,
1767                             0,
1768                             capability,
1769                             params->beacon_interval,
1770                             fake_ie, fake - fake_ie,
1771                             0, GFP_KERNEL);
1772
1773         memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
1774         priv->wdev->ssid_len = params->ssid_len;
1775
1776         cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
1777
1778         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1779         priv->connect_status = LBS_CONNECTED;
1780         netif_carrier_on(priv->dev);
1781         if (!priv->tx_pending_len)
1782                 netif_wake_queue(priv->dev);
1783
1784         lbs_deb_leave(LBS_DEB_CFG80211);
1785 }
1786
1787 static int lbs_ibss_join_existing(struct lbs_private *priv,
1788         struct cfg80211_ibss_params *params,
1789         struct cfg80211_bss *bss)
1790 {
1791         const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1792         struct cmd_ds_802_11_ad_hoc_join cmd;
1793         u8 preamble = RADIO_PREAMBLE_SHORT;
1794         int ret = 0;
1795
1796         lbs_deb_enter(LBS_DEB_CFG80211);
1797
1798         /* TODO: set preamble based on scan result */
1799         ret = lbs_set_radio(priv, preamble, 1);
1800         if (ret)
1801                 goto out;
1802
1803         /*
1804          * Example CMD_802_11_AD_HOC_JOIN command:
1805          *
1806          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1807          * size            65 00
1808          * sequence        xx xx
1809          * result          00 00
1810          * bssid           02 27 27 97 2f 96
1811          * ssid            49 42 53 53 00 00 00 00
1812          *                 00 00 00 00 00 00 00 00
1813          *                 00 00 00 00 00 00 00 00
1814          *                 00 00 00 00 00 00 00 00
1815          * type            02            CMD_BSS_TYPE_IBSS
1816          * beacon period   64 00
1817          * dtim period     00
1818          * timestamp       00 00 00 00 00 00 00 00
1819          * localtime       00 00 00 00 00 00 00 00
1820          * IE DS           03
1821          * IE DS len       01
1822          * IE DS channel   01
1823          * reserveed       00 00 00 00
1824          * IE IBSS         06
1825          * IE IBSS len     02
1826          * IE IBSS atim    00 00
1827          * reserved        00 00 00 00
1828          * capability      02 00
1829          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1830          * fail timeout    ff 00
1831          * probe delay     00 00
1832          */
1833         memset(&cmd, 0, sizeof(cmd));
1834         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1835
1836         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1837         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1838         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1839         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1840         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1841         cmd.bss.ds.header.len = 1;
1842         cmd.bss.ds.channel = params->channel->hw_value;
1843         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1844         cmd.bss.ibss.header.len = 2;
1845         cmd.bss.ibss.atimwindow = 0;
1846         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1847
1848         /* set rates to the intersection of our rates and the rates in the
1849            bss */
1850         if (!rates_eid) {
1851                 lbs_add_rates(cmd.bss.rates);
1852         } else {
1853                 int hw, i;
1854                 u8 rates_max = rates_eid[1];
1855                 u8 *rates = cmd.bss.rates;
1856                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1857                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1858                         for (i = 0; i < rates_max; i++) {
1859                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1860                                         u8 rate = rates_eid[i+2];
1861                                         if (rate == 0x02 || rate == 0x04 ||
1862                                             rate == 0x0b || rate == 0x16)
1863                                                 rate |= 0x80;
1864                                         *rates++ = rate;
1865                                 }
1866                         }
1867                 }
1868         }
1869
1870         /* Only v8 and below support setting this */
1871         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1872                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1873                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1874         }
1875         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1876         if (ret)
1877                 goto out;
1878
1879         /*
1880          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1881          *
1882          * response        2c 80
1883          * size            09 00
1884          * sequence        xx xx
1885          * result          00 00
1886          * reserved        00
1887          */
1888         lbs_join_post(priv, params, bss->bssid, bss->capability);
1889
1890  out:
1891         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1892         return ret;
1893 }
1894
1895
1896
1897 static int lbs_ibss_start_new(struct lbs_private *priv,
1898         struct cfg80211_ibss_params *params)
1899 {
1900         struct cmd_ds_802_11_ad_hoc_start cmd;
1901         struct cmd_ds_802_11_ad_hoc_result *resp =
1902                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1903         u8 preamble = RADIO_PREAMBLE_SHORT;
1904         int ret = 0;
1905         u16 capability;
1906
1907         lbs_deb_enter(LBS_DEB_CFG80211);
1908
1909         ret = lbs_set_radio(priv, preamble, 1);
1910         if (ret)
1911                 goto out;
1912
1913         /*
1914          * Example CMD_802_11_AD_HOC_START command:
1915          *
1916          * command         2b 00         CMD_802_11_AD_HOC_START
1917          * size            b1 00
1918          * sequence        xx xx
1919          * result          00 00
1920          * ssid            54 45 53 54 00 00 00 00
1921          *                 00 00 00 00 00 00 00 00
1922          *                 00 00 00 00 00 00 00 00
1923          *                 00 00 00 00 00 00 00 00
1924          * bss type        02
1925          * beacon period   64 00
1926          * dtim period     00
1927          * IE IBSS         06
1928          * IE IBSS len     02
1929          * IE IBSS atim    00 00
1930          * reserved        00 00 00 00
1931          * IE DS           03
1932          * IE DS len       01
1933          * IE DS channel   01
1934          * reserved        00 00 00 00
1935          * probe delay     00 00
1936          * capability      02 00
1937          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1938          *                 0c 12 18 24 30 48 60 6c
1939          * padding         100 bytes
1940          */
1941         memset(&cmd, 0, sizeof(cmd));
1942         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1943         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1944         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1945         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1946         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1947         cmd.ibss.header.len = 2;
1948         cmd.ibss.atimwindow = 0;
1949         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1950         cmd.ds.header.len = 1;
1951         cmd.ds.channel = params->channel->hw_value;
1952         /* Only v8 and below support setting probe delay */
1953         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1954                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1955         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1956         capability = WLAN_CAPABILITY_IBSS;
1957         cmd.capability = cpu_to_le16(capability);
1958         lbs_add_rates(cmd.rates);
1959
1960
1961         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1962         if (ret)
1963                 goto out;
1964
1965         /*
1966          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1967          *
1968          * response        2b 80
1969          * size            14 00
1970          * sequence        xx xx
1971          * result          00 00
1972          * reserved        00
1973          * bssid           02 2b 7b 0f 86 0e
1974          */
1975         lbs_join_post(priv, params, resp->bssid, capability);
1976
1977  out:
1978         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
1979         return ret;
1980 }
1981
1982
1983 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1984                 struct cfg80211_ibss_params *params)
1985 {
1986         struct lbs_private *priv = wiphy_priv(wiphy);
1987         int ret = 0;
1988         struct cfg80211_bss *bss;
1989         DECLARE_SSID_BUF(ssid_buf);
1990
1991         if (dev == priv->mesh_dev)
1992                 return -EOPNOTSUPP;
1993
1994         lbs_deb_enter(LBS_DEB_CFG80211);
1995
1996         if (!params->channel) {
1997                 ret = -ENOTSUPP;
1998                 goto out;
1999         }
2000
2001         ret = lbs_set_channel(priv, params->channel->hw_value);
2002         if (ret)
2003                 goto out;
2004
2005         /* Search if someone is beaconing. This assumes that the
2006          * bss list is populated already */
2007         bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
2008                 params->ssid, params->ssid_len,
2009                 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
2010
2011         if (bss) {
2012                 ret = lbs_ibss_join_existing(priv, params, bss);
2013                 cfg80211_put_bss(bss);
2014         } else
2015                 ret = lbs_ibss_start_new(priv, params);
2016
2017
2018  out:
2019         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2020         return ret;
2021 }
2022
2023
2024 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2025 {
2026         struct lbs_private *priv = wiphy_priv(wiphy);
2027         struct cmd_ds_802_11_ad_hoc_stop cmd;
2028         int ret = 0;
2029
2030         if (dev == priv->mesh_dev)
2031                 return -EOPNOTSUPP;
2032
2033         lbs_deb_enter(LBS_DEB_CFG80211);
2034
2035         memset(&cmd, 0, sizeof(cmd));
2036         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
2037         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
2038
2039         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
2040         lbs_mac_event_disconnected(priv);
2041
2042         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2043         return ret;
2044 }
2045
2046
2047
2048
2049 /*
2050  * Initialization
2051  */
2052
2053 static struct cfg80211_ops lbs_cfg80211_ops = {
2054         .set_channel = lbs_cfg_set_channel,
2055         .scan = lbs_cfg_scan,
2056         .connect = lbs_cfg_connect,
2057         .disconnect = lbs_cfg_disconnect,
2058         .add_key = lbs_cfg_add_key,
2059         .del_key = lbs_cfg_del_key,
2060         .set_default_key = lbs_cfg_set_default_key,
2061         .get_station = lbs_cfg_get_station,
2062         .dump_survey = lbs_get_survey,
2063         .change_virtual_intf = lbs_change_intf,
2064         .join_ibss = lbs_join_ibss,
2065         .leave_ibss = lbs_leave_ibss,
2066 };
2067
2068
2069 /*
2070  * At this time lbs_private *priv doesn't even exist, so we just allocate
2071  * memory and don't initialize the wiphy further. This is postponed until we
2072  * can talk to the firmware and happens at registration time in
2073  * lbs_cfg_wiphy_register().
2074  */
2075 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2076 {
2077         int ret = 0;
2078         struct wireless_dev *wdev;
2079
2080         lbs_deb_enter(LBS_DEB_CFG80211);
2081
2082         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2083         if (!wdev) {
2084                 dev_err(dev, "cannot allocate wireless device\n");
2085                 return ERR_PTR(-ENOMEM);
2086         }
2087
2088         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2089         if (!wdev->wiphy) {
2090                 dev_err(dev, "cannot allocate wiphy\n");
2091                 ret = -ENOMEM;
2092                 goto err_wiphy_new;
2093         }
2094
2095         lbs_deb_leave(LBS_DEB_CFG80211);
2096         return wdev;
2097
2098  err_wiphy_new:
2099         kfree(wdev);
2100         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2101         return ERR_PTR(ret);
2102 }
2103
2104
2105 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2106 {
2107         struct region_code_mapping {
2108                 const char *cn;
2109                 int code;
2110         };
2111
2112         /* Section 5.17.2 */
2113         static const struct region_code_mapping regmap[] = {
2114                 {"US ", 0x10}, /* US FCC */
2115                 {"CA ", 0x20}, /* Canada */
2116                 {"EU ", 0x30}, /* ETSI   */
2117                 {"ES ", 0x31}, /* Spain  */
2118                 {"FR ", 0x32}, /* France */
2119                 {"JP ", 0x40}, /* Japan  */
2120         };
2121         size_t i;
2122
2123         lbs_deb_enter(LBS_DEB_CFG80211);
2124
2125         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2126                 if (regmap[i].code == priv->regioncode) {
2127                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2128                         break;
2129                 }
2130
2131         lbs_deb_leave(LBS_DEB_CFG80211);
2132 }
2133
2134
2135 /*
2136  * This function get's called after lbs_setup_firmware() determined the
2137  * firmware capabities. So we can setup the wiphy according to our
2138  * hardware/firmware.
2139  */
2140 int lbs_cfg_register(struct lbs_private *priv)
2141 {
2142         struct wireless_dev *wdev = priv->wdev;
2143         int ret;
2144
2145         lbs_deb_enter(LBS_DEB_CFG80211);
2146
2147         wdev->wiphy->max_scan_ssids = 1;
2148         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2149
2150         wdev->wiphy->interface_modes =
2151                         BIT(NL80211_IFTYPE_STATION) |
2152                         BIT(NL80211_IFTYPE_ADHOC);
2153         if (lbs_rtap_supported(priv))
2154                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2155         if (lbs_mesh_activated(priv))
2156                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2157
2158         wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
2159
2160         /*
2161          * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
2162          * never seen a firmware without WPA
2163          */
2164         wdev->wiphy->cipher_suites = cipher_suites;
2165         wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
2166         wdev->wiphy->reg_notifier = lbs_reg_notifier;
2167
2168         ret = wiphy_register(wdev->wiphy);
2169         if (ret < 0)
2170                 pr_err("cannot register wiphy device\n");
2171
2172         priv->wiphy_registered = true;
2173
2174         ret = register_netdev(priv->dev);
2175         if (ret)
2176                 pr_err("cannot register network device\n");
2177
2178         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
2179
2180         lbs_cfg_set_regulatory_hint(priv);
2181
2182         lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
2183         return ret;
2184 }
2185
2186 int lbs_reg_notifier(struct wiphy *wiphy,
2187                 struct regulatory_request *request)
2188 {
2189         struct lbs_private *priv = wiphy_priv(wiphy);
2190         int ret;
2191
2192         lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
2193                         "callback for domain %c%c\n", request->alpha2[0],
2194                         request->alpha2[1]);
2195
2196         ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
2197
2198         lbs_deb_leave(LBS_DEB_CFG80211);
2199         return ret;
2200 }
2201
2202 void lbs_scan_deinit(struct lbs_private *priv)
2203 {
2204         lbs_deb_enter(LBS_DEB_CFG80211);
2205         cancel_delayed_work_sync(&priv->scan_work);
2206 }
2207
2208
2209 void lbs_cfg_free(struct lbs_private *priv)
2210 {
2211         struct wireless_dev *wdev = priv->wdev;
2212
2213         lbs_deb_enter(LBS_DEB_CFG80211);
2214
2215         if (!wdev)
2216                 return;
2217
2218         if (priv->wiphy_registered)
2219                 wiphy_unregister(wdev->wiphy);
2220
2221         if (wdev->wiphy)
2222                 wiphy_free(wdev->wiphy);
2223
2224         kfree(wdev);
2225 }