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

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
lbs_auth_to_authtype
lbs_add_rates
lbs_add_ssid_tlv
lbs_add_supported_rates_tlv
add_ie_rates
lbs_add_common_rates_tlv
lbs_cfg_set_monitor_channel
lbs_cfg_set_mesh_channel
lbs_ret_scan
lbs_scan_worker
_internal_start_scan
lbs_scan_done
lbs_cfg_scan
lbs_send_disconnect_notification
lbs_send_mic_failureevent
lbs_remove_wep_keys
lbs_set_wep_keys
lbs_enable_rsn
lbs_set_key_material
lbs_set_authtype
lbs_associate
_new_connect_scan_req
lbs_cfg_connect
lbs_disconnect
lbs_cfg_disconnect
lbs_cfg_set_default_key
lbs_cfg_add_key
lbs_cfg_del_key
lbs_cfg_get_station
lbs_change_intf
lbs_join_post
lbs_ibss_join_existing
lbs_ibss_start_new
lbs_join_ibss
lbs_leave_ibss
lbs_set_power_mgmt
lbs_cfg_alloc
lbs_cfg_set_regulatory_hint
lbs_reg_notifier
lbs_cfg_register
lbs_scan_deinit
lbs_cfg_free
   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Implement cfg80211 ("iw") support.
   4  *
   5  * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
   6  * Holger Schurig <hs4233@mail.mn-solutions.de>
   7  *
   8  */
   9 
  10 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  11 
  12 #include <linux/hardirq.h>
  13 #include <linux/sched.h>
  14 #include <linux/wait.h>
  15 #include <linux/slab.h>
  16 #include <linux/ieee80211.h>
  17 #include <net/cfg80211.h>
  18 #include <asm/unaligned.h>
  19 
  20 #include "decl.h"
  21 #include "cfg.h"
  22 #include "cmd.h"
  23 #include "mesh.h"
  24 
  25 
  26 #define CHAN2G(_channel, _freq, _flags) {        \
  27         .band             = NL80211_BAND_2GHZ, \
  28         .center_freq      = (_freq),             \
  29         .hw_value         = (_channel),          \
  30         .flags            = (_flags),            \
  31         .max_antenna_gain = 0,                   \
  32         .max_power        = 30,                  \
  33 }
  34 
  35 static struct ieee80211_channel lbs_2ghz_channels[] = {
  36         CHAN2G(1,  2412, 0),
  37         CHAN2G(2,  2417, 0),
  38         CHAN2G(3,  2422, 0),
  39         CHAN2G(4,  2427, 0),
  40         CHAN2G(5,  2432, 0),
  41         CHAN2G(6,  2437, 0),
  42         CHAN2G(7,  2442, 0),
  43         CHAN2G(8,  2447, 0),
  44         CHAN2G(9,  2452, 0),
  45         CHAN2G(10, 2457, 0),
  46         CHAN2G(11, 2462, 0),
  47         CHAN2G(12, 2467, 0),
  48         CHAN2G(13, 2472, 0),
  49         CHAN2G(14, 2484, 0),
  50 };
  51 
  52 #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  53         .bitrate  = (_rate),                    \
  54         .hw_value = (_hw_value),                \
  55         .flags    = (_flags),                   \
  56 }
  57 
  58 
  59 /* Table 6 in section 3.2.1.1 */
  60 static struct ieee80211_rate lbs_rates[] = {
  61         RATETAB_ENT(10,  0,  0),
  62         RATETAB_ENT(20,  1,  0),
  63         RATETAB_ENT(55,  2,  0),
  64         RATETAB_ENT(110, 3,  0),
  65         RATETAB_ENT(60,  9,  0),
  66         RATETAB_ENT(90,  6,  0),
  67         RATETAB_ENT(120, 7,  0),
  68         RATETAB_ENT(180, 8,  0),
  69         RATETAB_ENT(240, 9,  0),
  70         RATETAB_ENT(360, 10, 0),
  71         RATETAB_ENT(480, 11, 0),
  72         RATETAB_ENT(540, 12, 0),
  73 };
  74 
  75 static struct ieee80211_supported_band lbs_band_2ghz = {
  76         .channels = lbs_2ghz_channels,
  77         .n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  78         .bitrates = lbs_rates,
  79         .n_bitrates = ARRAY_SIZE(lbs_rates),
  80 };
  81 
  82 
  83 static const u32 cipher_suites[] = {
  84         WLAN_CIPHER_SUITE_WEP40,
  85         WLAN_CIPHER_SUITE_WEP104,
  86         WLAN_CIPHER_SUITE_TKIP,
  87         WLAN_CIPHER_SUITE_CCMP,
  88 };
  89 
  90 /* Time to stay on the channel */
  91 #define LBS_DWELL_PASSIVE 100
  92 #define LBS_DWELL_ACTIVE  40
  93 
  94 
  95 /***************************************************************************
  96  * Misc utility functions
  97  *
  98  * TLVs are Marvell specific. They are very similar to IEs, they have the
  99  * same structure: type, length, data*. The only difference: for IEs, the
 100  * type and length are u8, but for TLVs they're __le16.
 101  */
 102 
 103 /*
 104  * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
 105  * in the firmware spec
 106  */
 107 static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
 108 {
 109         int ret = -ENOTSUPP;
 110 
 111         switch (auth_type) {
 112         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 113         case NL80211_AUTHTYPE_SHARED_KEY:
 114                 ret = auth_type;
 115                 break;
 116         case NL80211_AUTHTYPE_AUTOMATIC:
 117                 ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
 118                 break;
 119         case NL80211_AUTHTYPE_NETWORK_EAP:
 120                 ret = 0x80;
 121                 break;
 122         default:
 123                 /* silence compiler */
 124                 break;
 125         }
 126         return ret;
 127 }
 128 
 129 
 130 /*
 131  * Various firmware commands need the list of supported rates, but with
 132  * the hight-bit set for basic rates
 133  */
 134 static int lbs_add_rates(u8 *rates)
 135 {
 136         size_t i;
 137 
 138         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
 139                 u8 rate = lbs_rates[i].bitrate / 5;
 140                 if (rate == 0x02 || rate == 0x04 ||
 141                     rate == 0x0b || rate == 0x16)
 142                         rate |= 0x80;
 143                 rates[i] = rate;
 144         }
 145         return ARRAY_SIZE(lbs_rates);
 146 }
 147 
 148 
 149 /***************************************************************************
 150  * TLV utility functions
 151  *
 152  * TLVs are Marvell specific. They are very similar to IEs, they have the
 153  * same structure: type, length, data*. The only difference: for IEs, the
 154  * type and length are u8, but for TLVs they're __le16.
 155  */
 156 
 157 
 158 /*
 159  * Add ssid TLV
 160  */
 161 #define LBS_MAX_SSID_TLV_SIZE                   \
 162         (sizeof(struct mrvl_ie_header)          \
 163          + IEEE80211_MAX_SSID_LEN)
 164 
 165 static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
 166 {
 167         struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
 168 
 169         /*
 170          * TLV-ID SSID  00 00
 171          * length       06 00
 172          * ssid         4d 4e 54 45 53 54
 173          */
 174         ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
 175         ssid_tlv->header.len = cpu_to_le16(ssid_len);
 176         memcpy(ssid_tlv->ssid, ssid, ssid_len);
 177         return sizeof(ssid_tlv->header) + ssid_len;
 178 }
 179 
 180 
 181 /*
 182  * Add channel list TLV (section 8.4.2)
 183  *
 184  * Actual channel data comes from priv->wdev->wiphy->channels.
 185  */
 186 #define LBS_MAX_CHANNEL_LIST_TLV_SIZE                                   \
 187         (sizeof(struct mrvl_ie_header)                                  \
 188          + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
 189 
 190 static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
 191                                     int last_channel, int active_scan)
 192 {
 193         int chanscanparamsize = sizeof(struct chanscanparamset) *
 194                 (last_channel - priv->scan_channel);
 195 
 196         struct mrvl_ie_header *header = (void *) tlv;
 197 
 198         /*
 199          * TLV-ID CHANLIST  01 01
 200          * length           0e 00
 201          * channel          00 01 00 00 00 64 00
 202          *   radio type     00
 203          *   channel           01
 204          *   scan type            00
 205          *   min scan time           00 00
 206          *   max scan time                 64 00
 207          * channel 2        00 02 00 00 00 64 00
 208          *
 209          */
 210 
 211         header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
 212         header->len  = cpu_to_le16(chanscanparamsize);
 213         tlv += sizeof(struct mrvl_ie_header);
 214 
 215         /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
 216                      last_channel); */
 217         memset(tlv, 0, chanscanparamsize);
 218 
 219         while (priv->scan_channel < last_channel) {
 220                 struct chanscanparamset *param = (void *) tlv;
 221 
 222                 param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
 223                 param->channumber =
 224                         priv->scan_req->channels[priv->scan_channel]->hw_value;
 225                 if (active_scan) {
 226                         param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
 227                 } else {
 228                         param->chanscanmode.passivescan = 1;
 229                         param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
 230                 }
 231                 tlv += sizeof(struct chanscanparamset);
 232                 priv->scan_channel++;
 233         }
 234         return sizeof(struct mrvl_ie_header) + chanscanparamsize;
 235 }
 236 
 237 
 238 /*
 239  * Add rates TLV
 240  *
 241  * The rates are in lbs_bg_rates[], but for the 802.11b
 242  * rates the high bit is set. We add this TLV only because
 243  * there's a firmware which otherwise doesn't report all
 244  * APs in range.
 245  */
 246 #define LBS_MAX_RATES_TLV_SIZE                  \
 247         (sizeof(struct mrvl_ie_header)          \
 248          + (ARRAY_SIZE(lbs_rates)))
 249 
 250 /* Adds a TLV with all rates the hardware supports */
 251 static int lbs_add_supported_rates_tlv(u8 *tlv)
 252 {
 253         size_t i;
 254         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 255 
 256         /*
 257          * TLV-ID RATES  01 00
 258          * length        0e 00
 259          * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
 260          */
 261         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 262         tlv += sizeof(rate_tlv->header);
 263         i = lbs_add_rates(tlv);
 264         tlv += i;
 265         rate_tlv->header.len = cpu_to_le16(i);
 266         return sizeof(rate_tlv->header) + i;
 267 }
 268 
 269 /* Add common rates from a TLV and return the new end of the TLV */
 270 static u8 *
 271 add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
 272 {
 273         int hw, ap, ap_max = ie[1];
 274         u8 hw_rate;
 275 
 276         if (ap_max > MAX_RATES) {
 277                 lbs_deb_assoc("invalid rates\n");
 278                 return tlv;
 279         }
 280         /* Advance past IE header */
 281         ie += 2;
 282 
 283         lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
 284 
 285         for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
 286                 hw_rate = lbs_rates[hw].bitrate / 5;
 287                 for (ap = 0; ap < ap_max; ap++) {
 288                         if (hw_rate == (ie[ap] & 0x7f)) {
 289                                 *tlv++ = ie[ap];
 290                                 *nrates = *nrates + 1;
 291                         }
 292                 }
 293         }
 294         return tlv;
 295 }
 296 
 297 /*
 298  * Adds a TLV with all rates the hardware *and* BSS supports.
 299  */
 300 static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
 301 {
 302         struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
 303         const u8 *rates_eid, *ext_rates_eid;
 304         int n = 0;
 305 
 306         rcu_read_lock();
 307         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
 308         ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
 309 
 310         /*
 311          * 01 00                   TLV_TYPE_RATES
 312          * 04 00                   len
 313          * 82 84 8b 96             rates
 314          */
 315         rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
 316         tlv += sizeof(rate_tlv->header);
 317 
 318         /* Add basic rates */
 319         if (rates_eid) {
 320                 tlv = add_ie_rates(tlv, rates_eid, &n);
 321 
 322                 /* Add extended rates, if any */
 323                 if (ext_rates_eid)
 324                         tlv = add_ie_rates(tlv, ext_rates_eid, &n);
 325         } else {
 326                 lbs_deb_assoc("assoc: bss had no basic rate IE\n");
 327                 /* Fallback: add basic 802.11b rates */
 328                 *tlv++ = 0x82;
 329                 *tlv++ = 0x84;
 330                 *tlv++ = 0x8b;
 331                 *tlv++ = 0x96;
 332                 n = 4;
 333         }
 334         rcu_read_unlock();
 335 
 336         rate_tlv->header.len = cpu_to_le16(n);
 337         return sizeof(rate_tlv->header) + n;
 338 }
 339 
 340 
 341 /*
 342  * Add auth type TLV.
 343  *
 344  * This is only needed for newer firmware (V9 and up).
 345  */
 346 #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
 347         sizeof(struct mrvl_ie_auth_type)
 348 
 349 static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
 350 {
 351         struct mrvl_ie_auth_type *auth = (void *) tlv;
 352 
 353         /*
 354          * 1f 01  TLV_TYPE_AUTH_TYPE
 355          * 01 00  len
 356          * 01     auth type
 357          */
 358         auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 359         auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
 360         auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
 361         return sizeof(*auth);
 362 }
 363 
 364 
 365 /*
 366  * Add channel (phy ds) TLV
 367  */
 368 #define LBS_MAX_CHANNEL_TLV_SIZE \
 369         sizeof(struct mrvl_ie_header)
 370 
 371 static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
 372 {
 373         struct mrvl_ie_ds_param_set *ds = (void *) tlv;
 374 
 375         /*
 376          * 03 00  TLV_TYPE_PHY_DS
 377          * 01 00  len
 378          * 06     channel
 379          */
 380         ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
 381         ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
 382         ds->channel = channel;
 383         return sizeof(*ds);
 384 }
 385 
 386 
 387 /*
 388  * Add (empty) CF param TLV of the form:
 389  */
 390 #define LBS_MAX_CF_PARAM_TLV_SIZE               \
 391         sizeof(struct mrvl_ie_header)
 392 
 393 static int lbs_add_cf_param_tlv(u8 *tlv)
 394 {
 395         struct mrvl_ie_cf_param_set *cf = (void *)tlv;
 396 
 397         /*
 398          * 04 00  TLV_TYPE_CF
 399          * 06 00  len
 400          * 00     cfpcnt
 401          * 00     cfpperiod
 402          * 00 00  cfpmaxduration
 403          * 00 00  cfpdurationremaining
 404          */
 405         cf->header.type = cpu_to_le16(TLV_TYPE_CF);
 406         cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
 407         return sizeof(*cf);
 408 }
 409 
 410 /*
 411  * Add WPA TLV
 412  */
 413 #define LBS_MAX_WPA_TLV_SIZE                    \
 414         (sizeof(struct mrvl_ie_header)          \
 415          + 128 /* TODO: I guessed the size */)
 416 
 417 static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
 418 {
 419         size_t tlv_len;
 420 
 421         /*
 422          * We need just convert an IE to an TLV. IEs use u8 for the header,
 423          *   u8      type
 424          *   u8      len
 425          *   u8[]    data
 426          * but TLVs use __le16 instead:
 427          *   __le16  type
 428          *   __le16  len
 429          *   u8[]    data
 430          */
 431         *tlv++ = *ie++;
 432         *tlv++ = 0;
 433         tlv_len = *tlv++ = *ie++;
 434         *tlv++ = 0;
 435         while (tlv_len--)
 436                 *tlv++ = *ie++;
 437         /* the TLV is two bytes larger than the IE */
 438         return ie_len + 2;
 439 }
 440 
 441 /*
 442  * Set Channel
 443  */
 444 
 445 static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
 446                                        struct cfg80211_chan_def *chandef)
 447 {
 448         struct lbs_private *priv = wiphy_priv(wiphy);
 449         int ret = -ENOTSUPP;
 450 
 451         if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
 452                 goto out;
 453 
 454         ret = lbs_set_channel(priv, chandef->chan->hw_value);
 455 
 456  out:
 457         return ret;
 458 }
 459 
 460 static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
 461                                     struct net_device *netdev,
 462                                     struct ieee80211_channel *channel)
 463 {
 464         struct lbs_private *priv = wiphy_priv(wiphy);
 465         int ret = -ENOTSUPP;
 466 
 467         if (netdev != priv->mesh_dev)
 468                 goto out;
 469 
 470         ret = lbs_mesh_set_channel(priv, channel->hw_value);
 471 
 472  out:
 473         return ret;
 474 }
 475 
 476 
 477 
 478 /*
 479  * Scanning
 480  */
 481 
 482 /*
 483  * When scanning, the firmware doesn't send a nul packet with the power-safe
 484  * bit to the AP. So we cannot stay away from our current channel too long,
 485  * otherwise we loose data. So take a "nap" while scanning every other
 486  * while.
 487  */
 488 #define LBS_SCAN_BEFORE_NAP 4
 489 
 490 
 491 /*
 492  * When the firmware reports back a scan-result, it gives us an "u8 rssi",
 493  * which isn't really an RSSI, as it becomes larger when moving away from
 494  * the AP. Anyway, we need to convert that into mBm.
 495  */
 496 #define LBS_SCAN_RSSI_TO_MBM(rssi) \
 497         ((-(int)rssi + 3)*100)
 498 
 499 static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
 500         struct cmd_header *resp)
 501 {
 502         struct cfg80211_bss *bss;
 503         struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
 504         int bsssize;
 505         const u8 *pos;
 506         const u8 *tsfdesc;
 507         int tsfsize;
 508         int i;
 509         int ret = -EILSEQ;
 510 
 511         bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
 512 
 513         lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
 514                         scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
 515 
 516         if (scanresp->nr_sets == 0) {
 517                 ret = 0;
 518                 goto done;
 519         }
 520 
 521         /*
 522          * The general layout of the scan response is described in chapter
 523          * 5.7.1. Basically we have a common part, then any number of BSS
 524          * descriptor sections. Finally we have section with the same number
 525          * of TSFs.
 526          *
 527          * cmd_ds_802_11_scan_rsp
 528          *   cmd_header
 529          *   pos_size
 530          *   nr_sets
 531          *   bssdesc 1
 532          *     bssid
 533          *     rssi
 534          *     timestamp
 535          *     intvl
 536          *     capa
 537          *     IEs
 538          *   bssdesc 2
 539          *   bssdesc n
 540          *   MrvlIEtypes_TsfFimestamp_t
 541          *     TSF for BSS 1
 542          *     TSF for BSS 2
 543          *     TSF for BSS n
 544          */
 545 
 546         pos = scanresp->bssdesc_and_tlvbuffer;
 547 
 548         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
 549                         scanresp->bssdescriptsize);
 550 
 551         tsfdesc = pos + bsssize;
 552         tsfsize = 4 + 8 * scanresp->nr_sets;
 553         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
 554 
 555         /* Validity check: we expect a Marvell-Local TLV */
 556         i = get_unaligned_le16(tsfdesc);
 557         tsfdesc += 2;
 558         if (i != TLV_TYPE_TSFTIMESTAMP) {
 559                 lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
 560                 goto done;
 561         }
 562 
 563         /*
 564          * Validity check: the TLV holds TSF values with 8 bytes each, so
 565          * the size in the TLV must match the nr_sets value
 566          */
 567         i = get_unaligned_le16(tsfdesc);
 568         tsfdesc += 2;
 569         if (i / 8 != scanresp->nr_sets) {
 570                 lbs_deb_scan("scan response: invalid number of TSF timestamp "
 571                              "sets (expected %d got %d)\n", scanresp->nr_sets,
 572                              i / 8);
 573                 goto done;
 574         }
 575 
 576         for (i = 0; i < scanresp->nr_sets; i++) {
 577                 const u8 *bssid;
 578                 const u8 *ie;
 579                 int left;
 580                 int ielen;
 581                 int rssi;
 582                 u16 intvl;
 583                 u16 capa;
 584                 int chan_no = -1;
 585                 const u8 *ssid = NULL;
 586                 u8 ssid_len = 0;
 587 
 588                 int len = get_unaligned_le16(pos);
 589                 pos += 2;
 590 
 591                 /* BSSID */
 592                 bssid = pos;
 593                 pos += ETH_ALEN;
 594                 /* RSSI */
 595                 rssi = *pos++;
 596                 /* Packet time stamp */
 597                 pos += 8;
 598                 /* Beacon interval */
 599                 intvl = get_unaligned_le16(pos);
 600                 pos += 2;
 601                 /* Capabilities */
 602                 capa = get_unaligned_le16(pos);
 603                 pos += 2;
 604 
 605                 /* To find out the channel, we must parse the IEs */
 606                 ie = pos;
 607                 /*
 608                  * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
 609                  * interval, capabilities
 610                  */
 611                 ielen = left = len - (6 + 1 + 8 + 2 + 2);
 612                 while (left >= 2) {
 613                         u8 id, elen;
 614                         id = *pos++;
 615                         elen = *pos++;
 616                         left -= 2;
 617                         if (elen > left) {
 618                                 lbs_deb_scan("scan response: invalid IE fmt\n");
 619                                 goto done;
 620                         }
 621 
 622                         if (id == WLAN_EID_DS_PARAMS)
 623                                 chan_no = *pos;
 624                         if (id == WLAN_EID_SSID) {
 625                                 ssid = pos;
 626                                 ssid_len = elen;
 627                         }
 628                         left -= elen;
 629                         pos += elen;
 630                 }
 631 
 632                 /* No channel, no luck */
 633                 if (chan_no != -1) {
 634                         struct wiphy *wiphy = priv->wdev->wiphy;
 635                         int freq = ieee80211_channel_to_frequency(chan_no,
 636                                                         NL80211_BAND_2GHZ);
 637                         struct ieee80211_channel *channel =
 638                                 ieee80211_get_channel(wiphy, freq);
 639 
 640                         lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
 641                                      bssid, capa, chan_no, ssid_len, ssid,
 642                                      LBS_SCAN_RSSI_TO_MBM(rssi)/100);
 643 
 644                         if (channel &&
 645                             !(channel->flags & IEEE80211_CHAN_DISABLED)) {
 646                                 bss = cfg80211_inform_bss(wiphy, channel,
 647                                         CFG80211_BSS_FTYPE_UNKNOWN,
 648                                         bssid, get_unaligned_le64(tsfdesc),
 649                                         capa, intvl, ie, ielen,
 650                                         LBS_SCAN_RSSI_TO_MBM(rssi),
 651                                         GFP_KERNEL);
 652                                 cfg80211_put_bss(wiphy, bss);
 653                         }
 654                 } else
 655                         lbs_deb_scan("scan response: missing BSS channel IE\n");
 656 
 657                 tsfdesc += 8;
 658         }
 659         ret = 0;
 660 
 661  done:
 662         return ret;
 663 }
 664 
 665 
 666 /*
 667  * Our scan command contains a TLV, consting of a SSID TLV, a channel list
 668  * TLV and a rates TLV. Determine the maximum size of them:
 669  */
 670 #define LBS_SCAN_MAX_CMD_SIZE                   \
 671         (sizeof(struct cmd_ds_802_11_scan)      \
 672          + LBS_MAX_SSID_TLV_SIZE                \
 673          + LBS_MAX_CHANNEL_LIST_TLV_SIZE        \
 674          + LBS_MAX_RATES_TLV_SIZE)
 675 
 676 /*
 677  * Assumes priv->scan_req is initialized and valid
 678  * Assumes priv->scan_channel is initialized
 679  */
 680 static void lbs_scan_worker(struct work_struct *work)
 681 {
 682         struct lbs_private *priv =
 683                 container_of(work, struct lbs_private, scan_work.work);
 684         struct cmd_ds_802_11_scan *scan_cmd;
 685         u8 *tlv; /* pointer into our current, growing TLV storage area */
 686         int last_channel;
 687         int running, carrier;
 688 
 689         scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
 690         if (scan_cmd == NULL)
 691                 return;
 692 
 693         /* prepare fixed part of scan command */
 694         scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
 695 
 696         /* stop network while we're away from our main channel */
 697         running = !netif_queue_stopped(priv->dev);
 698         carrier = netif_carrier_ok(priv->dev);
 699         if (running)
 700                 netif_stop_queue(priv->dev);
 701         if (carrier)
 702                 netif_carrier_off(priv->dev);
 703 
 704         /* prepare fixed part of scan command */
 705         tlv = scan_cmd->tlvbuffer;
 706 
 707         /* add SSID TLV */
 708         if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
 709                 tlv += lbs_add_ssid_tlv(tlv,
 710                                         priv->scan_req->ssids[0].ssid,
 711                                         priv->scan_req->ssids[0].ssid_len);
 712 
 713         /* add channel TLVs */
 714         last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
 715         if (last_channel > priv->scan_req->n_channels)
 716                 last_channel = priv->scan_req->n_channels;
 717         tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
 718                 priv->scan_req->n_ssids);
 719 
 720         /* add rates TLV */
 721         tlv += lbs_add_supported_rates_tlv(tlv);
 722 
 723         if (priv->scan_channel < priv->scan_req->n_channels) {
 724                 cancel_delayed_work(&priv->scan_work);
 725                 if (netif_running(priv->dev))
 726                         queue_delayed_work(priv->work_thread, &priv->scan_work,
 727                                 msecs_to_jiffies(300));
 728         }
 729 
 730         /* This is the final data we are about to send */
 731         scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
 732         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
 733                     sizeof(*scan_cmd));
 734         lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
 735                     tlv - scan_cmd->tlvbuffer);
 736 
 737         __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
 738                 le16_to_cpu(scan_cmd->hdr.size),
 739                 lbs_ret_scan, 0);
 740 
 741         if (priv->scan_channel >= priv->scan_req->n_channels) {
 742                 /* Mark scan done */
 743                 cancel_delayed_work(&priv->scan_work);
 744                 lbs_scan_done(priv);
 745         }
 746 
 747         /* Restart network */
 748         if (carrier)
 749                 netif_carrier_on(priv->dev);
 750         if (running && !priv->tx_pending_len)
 751                 netif_wake_queue(priv->dev);
 752 
 753         kfree(scan_cmd);
 754 
 755         /* Wake up anything waiting on scan completion */
 756         if (priv->scan_req == NULL) {
 757                 lbs_deb_scan("scan: waking up waiters\n");
 758                 wake_up_all(&priv->scan_q);
 759         }
 760 }
 761 
 762 static void _internal_start_scan(struct lbs_private *priv, bool internal,
 763         struct cfg80211_scan_request *request)
 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         priv->scan_req = request;
 770         priv->internal_scan = internal;
 771 
 772         queue_delayed_work(priv->work_thread, &priv->scan_work,
 773                 msecs_to_jiffies(50));
 774 }
 775 
 776 /*
 777  * Clean up priv->scan_req.  Should be used to handle the allocation details.
 778  */
 779 void lbs_scan_done(struct lbs_private *priv)
 780 {
 781         WARN_ON(!priv->scan_req);
 782 
 783         if (priv->internal_scan) {
 784                 kfree(priv->scan_req);
 785         } else {
 786                 struct cfg80211_scan_info info = {
 787                         .aborted = false,
 788                 };
 789 
 790                 cfg80211_scan_done(priv->scan_req, &info);
 791         }
 792 
 793         priv->scan_req = NULL;
 794 }
 795 
 796 static int lbs_cfg_scan(struct wiphy *wiphy,
 797         struct cfg80211_scan_request *request)
 798 {
 799         struct lbs_private *priv = wiphy_priv(wiphy);
 800         int ret = 0;
 801 
 802         if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
 803                 /* old scan request not yet processed */
 804                 ret = -EAGAIN;
 805                 goto out;
 806         }
 807 
 808         _internal_start_scan(priv, false, request);
 809 
 810         if (priv->surpriseremoved)
 811                 ret = -EIO;
 812 
 813  out:
 814         return ret;
 815 }
 816 
 817 
 818 
 819 
 820 /*
 821  * Events
 822  */
 823 
 824 void lbs_send_disconnect_notification(struct lbs_private *priv,
 825                                       bool locally_generated)
 826 {
 827         cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
 828                               GFP_KERNEL);
 829 }
 830 
 831 void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
 832 {
 833         cfg80211_michael_mic_failure(priv->dev,
 834                 priv->assoc_bss,
 835                 event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
 836                         NL80211_KEYTYPE_GROUP :
 837                         NL80211_KEYTYPE_PAIRWISE,
 838                 -1,
 839                 NULL,
 840                 GFP_KERNEL);
 841 }
 842 
 843 
 844 
 845 
 846 /*
 847  * Connect/disconnect
 848  */
 849 
 850 
 851 /*
 852  * This removes all WEP keys
 853  */
 854 static int lbs_remove_wep_keys(struct lbs_private *priv)
 855 {
 856         struct cmd_ds_802_11_set_wep cmd;
 857         int ret;
 858 
 859         memset(&cmd, 0, sizeof(cmd));
 860         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 861         cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
 862         cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
 863 
 864         ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
 865 
 866         return ret;
 867 }
 868 
 869 /*
 870  * Set WEP keys
 871  */
 872 static int lbs_set_wep_keys(struct lbs_private *priv)
 873 {
 874         struct cmd_ds_802_11_set_wep cmd;
 875         int i;
 876         int ret;
 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         return ret;
 928 }
 929 
 930 
 931 /*
 932  * Enable/Disable RSN status
 933  */
 934 static int lbs_enable_rsn(struct lbs_private *priv, int enable)
 935 {
 936         struct cmd_ds_802_11_enable_rsn cmd;
 937         int ret;
 938 
 939         /*
 940          * cmd       2f 00
 941          * size      0c 00
 942          * sequence  xx xx
 943          * result    00 00
 944          * action    01 00    ACT_SET
 945          * enable    01 00
 946          */
 947         memset(&cmd, 0, sizeof(cmd));
 948         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 949         cmd.action = cpu_to_le16(CMD_ACT_SET);
 950         cmd.enable = cpu_to_le16(enable);
 951 
 952         ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
 953 
 954         return ret;
 955 }
 956 
 957 
 958 /*
 959  * Set WPA/WPA key material
 960  */
 961 
 962 /*
 963  * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
 964  * get rid of WEXT, this should go into host.h
 965  */
 966 
 967 struct cmd_key_material {
 968         struct cmd_header hdr;
 969 
 970         __le16 action;
 971         struct MrvlIEtype_keyParamSet param;
 972 } __packed;
 973 
 974 static int lbs_set_key_material(struct lbs_private *priv,
 975                                 int key_type, int key_info,
 976                                 const u8 *key, u16 key_len)
 977 {
 978         struct cmd_key_material cmd;
 979         int ret;
 980 
 981         /*
 982          * Example for WPA (TKIP):
 983          *
 984          * cmd       5e 00
 985          * size      34 00
 986          * sequence  xx xx
 987          * result    00 00
 988          * action    01 00
 989          * TLV type  00 01    key param
 990          * length    00 26
 991          * key type  01 00    TKIP
 992          * key info  06 00    UNICAST | ENABLED
 993          * key len   20 00
 994          * key       32 bytes
 995          */
 996         memset(&cmd, 0, sizeof(cmd));
 997         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 998         cmd.action = cpu_to_le16(CMD_ACT_SET);
 999         cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
1000         cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
1001         cmd.param.keytypeid = cpu_to_le16(key_type);
1002         cmd.param.keyinfo = cpu_to_le16(key_info);
1003         cmd.param.keylen = cpu_to_le16(key_len);
1004         if (key && key_len)
1005                 memcpy(cmd.param.key, key, key_len);
1006 
1007         ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
1008 
1009         return ret;
1010 }
1011 
1012 
1013 /*
1014  * Sets the auth type (open, shared, etc) in the firmware. That
1015  * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
1016  * command doesn't send an authentication frame at all, it just
1017  * stores the auth_type.
1018  */
1019 static int lbs_set_authtype(struct lbs_private *priv,
1020                             struct cfg80211_connect_params *sme)
1021 {
1022         struct cmd_ds_802_11_authenticate cmd;
1023         int ret;
1024 
1025         /*
1026          * cmd        11 00
1027          * size       19 00
1028          * sequence   xx xx
1029          * result     00 00
1030          * BSS id     00 13 19 80 da 30
1031          * auth type  00
1032          * reserved   00 00 00 00 00 00 00 00 00 00
1033          */
1034         memset(&cmd, 0, sizeof(cmd));
1035         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1036         if (sme->bssid)
1037                 memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
1038         /* convert auth_type */
1039         ret = lbs_auth_to_authtype(sme->auth_type);
1040         if (ret < 0)
1041                 goto done;
1042 
1043         cmd.authtype = ret;
1044         ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
1045 
1046  done:
1047         return ret;
1048 }
1049 
1050 
1051 /*
1052  * Create association request
1053  */
1054 #define LBS_ASSOC_MAX_CMD_SIZE                     \
1055         (sizeof(struct cmd_ds_802_11_associate)    \
1056          - 512 /* cmd_ds_802_11_associate.iebuf */ \
1057          + LBS_MAX_SSID_TLV_SIZE                   \
1058          + LBS_MAX_CHANNEL_TLV_SIZE                \
1059          + LBS_MAX_CF_PARAM_TLV_SIZE               \
1060          + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
1061          + LBS_MAX_WPA_TLV_SIZE)
1062 
1063 static int lbs_associate(struct lbs_private *priv,
1064                 struct cfg80211_bss *bss,
1065                 struct cfg80211_connect_params *sme)
1066 {
1067         struct cmd_ds_802_11_associate_response *resp;
1068         struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
1069                                                       GFP_KERNEL);
1070         const u8 *ssid_eid;
1071         size_t len, resp_ie_len;
1072         int status;
1073         int ret;
1074         u8 *pos;
1075         u8 *tmp;
1076 
1077         if (!cmd) {
1078                 ret = -ENOMEM;
1079                 goto done;
1080         }
1081         pos = &cmd->iebuf[0];
1082 
1083         /*
1084          * cmd              50 00
1085          * length           34 00
1086          * sequence         xx xx
1087          * result           00 00
1088          * BSS id           00 13 19 80 da 30
1089          * capabilities     11 00
1090          * listen interval  0a 00
1091          * beacon interval  00 00
1092          * DTIM period      00
1093          * TLVs             xx   (up to 512 bytes)
1094          */
1095         cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
1096 
1097         /* Fill in static fields */
1098         memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
1099         cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
1100         cmd->capability = cpu_to_le16(bss->capability);
1101 
1102         /* add SSID TLV */
1103         rcu_read_lock();
1104         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1105         if (ssid_eid)
1106                 pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
1107         else
1108                 lbs_deb_assoc("no SSID\n");
1109         rcu_read_unlock();
1110 
1111         /* add DS param TLV */
1112         if (bss->channel)
1113                 pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
1114         else
1115                 lbs_deb_assoc("no channel\n");
1116 
1117         /* add (empty) CF param TLV */
1118         pos += lbs_add_cf_param_tlv(pos);
1119 
1120         /* add rates TLV */
1121         tmp = pos + 4; /* skip Marvell IE header */
1122         pos += lbs_add_common_rates_tlv(pos, bss);
1123         lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
1124 
1125         /* add auth type TLV */
1126         if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
1127                 pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
1128 
1129         /* add WPA/WPA2 TLV */
1130         if (sme->ie && sme->ie_len)
1131                 pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
1132 
1133         len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
1134                 (u16)(pos - (u8 *) &cmd->iebuf);
1135         cmd->hdr.size = cpu_to_le16(len);
1136 
1137         lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
1138                         le16_to_cpu(cmd->hdr.size));
1139 
1140         /* store for later use */
1141         memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
1142 
1143         ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
1144         if (ret)
1145                 goto done;
1146 
1147         /* generate connect message to cfg80211 */
1148 
1149         resp = (void *) cmd; /* recast for easier field access */
1150         status = le16_to_cpu(resp->statuscode);
1151 
1152         /* Older FW versions map the IEEE 802.11 Status Code in the association
1153          * response to the following values returned in resp->statuscode:
1154          *
1155          *    IEEE Status Code                Marvell Status Code
1156          *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
1157          *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1158          *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1159          *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1160          *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
1161          *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
1162          *
1163          * Other response codes:
1164          *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
1165          *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
1166          *                                    association response from the AP)
1167          */
1168         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1169                 switch (status) {
1170                 case 0:
1171                         break;
1172                 case 1:
1173                         lbs_deb_assoc("invalid association parameters\n");
1174                         status = WLAN_STATUS_CAPS_UNSUPPORTED;
1175                         break;
1176                 case 2:
1177                         lbs_deb_assoc("timer expired while waiting for AP\n");
1178                         status = WLAN_STATUS_AUTH_TIMEOUT;
1179                         break;
1180                 case 3:
1181                         lbs_deb_assoc("association refused by AP\n");
1182                         status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
1183                         break;
1184                 case 4:
1185                         lbs_deb_assoc("authentication refused by AP\n");
1186                         status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1187                         break;
1188                 default:
1189                         lbs_deb_assoc("association failure %d\n", status);
1190                         /* v5 OLPC firmware does return the AP status code if
1191                          * it's not one of the values above.  Let that through.
1192                          */
1193                         break;
1194                 }
1195         }
1196 
1197         lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
1198                       "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
1199                       le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
1200 
1201         resp_ie_len = le16_to_cpu(resp->hdr.size)
1202                 - sizeof(resp->hdr)
1203                 - 6;
1204         cfg80211_connect_result(priv->dev,
1205                                 priv->assoc_bss,
1206                                 sme->ie, sme->ie_len,
1207                                 resp->iebuf, resp_ie_len,
1208                                 status,
1209                                 GFP_KERNEL);
1210 
1211         if (status == 0) {
1212                 /* TODO: get rid of priv->connect_status */
1213                 priv->connect_status = LBS_CONNECTED;
1214                 netif_carrier_on(priv->dev);
1215                 if (!priv->tx_pending_len)
1216                         netif_tx_wake_all_queues(priv->dev);
1217         }
1218 
1219         kfree(cmd);
1220 done:
1221         return ret;
1222 }
1223 
1224 static struct cfg80211_scan_request *
1225 _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
1226 {
1227         struct cfg80211_scan_request *creq = NULL;
1228         int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
1229         enum nl80211_band band;
1230 
1231         creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
1232                        n_channels * sizeof(void *),
1233                        GFP_ATOMIC);
1234         if (!creq)
1235                 return NULL;
1236 
1237         /* SSIDs come after channels */
1238         creq->ssids = (void *)&creq->channels[n_channels];
1239         creq->n_channels = n_channels;
1240         creq->n_ssids = 1;
1241 
1242         /* Scan all available channels */
1243         i = 0;
1244         for (band = 0; band < NUM_NL80211_BANDS; band++) {
1245                 int j;
1246 
1247                 if (!wiphy->bands[band])
1248                         continue;
1249 
1250                 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
1251                         /* ignore disabled channels */
1252                         if (wiphy->bands[band]->channels[j].flags &
1253                                                 IEEE80211_CHAN_DISABLED)
1254                                 continue;
1255 
1256                         creq->channels[i] = &wiphy->bands[band]->channels[j];
1257                         i++;
1258                 }
1259         }
1260         if (i) {
1261                 /* Set real number of channels specified in creq->channels[] */
1262                 creq->n_channels = i;
1263 
1264                 /* Scan for the SSID we're going to connect to */
1265                 memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
1266                 creq->ssids[0].ssid_len = sme->ssid_len;
1267         } else {
1268                 /* No channels found... */
1269                 kfree(creq);
1270                 creq = NULL;
1271         }
1272 
1273         return creq;
1274 }
1275 
1276 static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
1277                            struct cfg80211_connect_params *sme)
1278 {
1279         struct lbs_private *priv = wiphy_priv(wiphy);
1280         struct cfg80211_bss *bss = NULL;
1281         int ret = 0;
1282         u8 preamble = RADIO_PREAMBLE_SHORT;
1283 
1284         if (dev == priv->mesh_dev)
1285                 return -EOPNOTSUPP;
1286 
1287         if (!sme->bssid) {
1288                 struct cfg80211_scan_request *creq;
1289 
1290                 /*
1291                  * Scan for the requested network after waiting for existing
1292                  * scans to finish.
1293                  */
1294                 lbs_deb_assoc("assoc: waiting for existing scans\n");
1295                 wait_event_interruptible_timeout(priv->scan_q,
1296                                                  (priv->scan_req == NULL),
1297                                                  (15 * HZ));
1298 
1299                 creq = _new_connect_scan_req(wiphy, sme);
1300                 if (!creq) {
1301                         ret = -EINVAL;
1302                         goto done;
1303                 }
1304 
1305                 lbs_deb_assoc("assoc: scanning for compatible AP\n");
1306                 _internal_start_scan(priv, true, creq);
1307 
1308                 lbs_deb_assoc("assoc: waiting for scan to complete\n");
1309                 wait_event_interruptible_timeout(priv->scan_q,
1310                                                  (priv->scan_req == NULL),
1311                                                  (15 * HZ));
1312                 lbs_deb_assoc("assoc: scanning completed\n");
1313         }
1314 
1315         /* Find the BSS we want using available scan results */
1316         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
1317                 sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
1318                 IEEE80211_PRIVACY_ANY);
1319         if (!bss) {
1320                 wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
1321                           sme->bssid);
1322                 ret = -ENOENT;
1323                 goto done;
1324         }
1325         lbs_deb_assoc("trying %pM\n", bss->bssid);
1326         lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
1327                       sme->crypto.cipher_group,
1328                       sme->key_idx, sme->key_len);
1329 
1330         /* As this is a new connection, clear locally stored WEP keys */
1331         priv->wep_tx_key = 0;
1332         memset(priv->wep_key, 0, sizeof(priv->wep_key));
1333         memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
1334 
1335         /* set/remove WEP keys */
1336         switch (sme->crypto.cipher_group) {
1337         case WLAN_CIPHER_SUITE_WEP40:
1338         case WLAN_CIPHER_SUITE_WEP104:
1339                 /* Store provided WEP keys in priv-> */
1340                 priv->wep_tx_key = sme->key_idx;
1341                 priv->wep_key_len[sme->key_idx] = sme->key_len;
1342                 memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
1343                 /* Set WEP keys and WEP mode */
1344                 lbs_set_wep_keys(priv);
1345                 priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
1346                 lbs_set_mac_control(priv);
1347                 /* No RSN mode for WEP */
1348                 lbs_enable_rsn(priv, 0);
1349                 break;
1350         case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
1351                 /*
1352                  * If we don't have no WEP, no WPA and no WPA2,
1353                  * we remove all keys like in the WPA/WPA2 setup,
1354                  * we just don't set RSN.
1355                  *
1356                  * Therefore: fall-through
1357                  */
1358         case WLAN_CIPHER_SUITE_TKIP:
1359         case WLAN_CIPHER_SUITE_CCMP:
1360                 /* Remove WEP keys and WEP mode */
1361                 lbs_remove_wep_keys(priv);
1362                 priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
1363                 lbs_set_mac_control(priv);
1364 
1365                 /* clear the WPA/WPA2 keys */
1366                 lbs_set_key_material(priv,
1367                         KEY_TYPE_ID_WEP, /* doesn't matter */
1368                         KEY_INFO_WPA_UNICAST,
1369                         NULL, 0);
1370                 lbs_set_key_material(priv,
1371                         KEY_TYPE_ID_WEP, /* doesn't matter */
1372                         KEY_INFO_WPA_MCAST,
1373                         NULL, 0);
1374                 /* RSN mode for WPA/WPA2 */
1375                 lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
1376                 break;
1377         default:
1378                 wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
1379                           sme->crypto.cipher_group);
1380                 ret = -ENOTSUPP;
1381                 goto done;
1382         }
1383 
1384         ret = lbs_set_authtype(priv, sme);
1385         if (ret == -ENOTSUPP) {
1386                 wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
1387                 goto done;
1388         }
1389 
1390         lbs_set_radio(priv, preamble, 1);
1391 
1392         /* Do the actual association */
1393         ret = lbs_associate(priv, bss, sme);
1394 
1395  done:
1396         if (bss)
1397                 cfg80211_put_bss(wiphy, bss);
1398         return ret;
1399 }
1400 
1401 int lbs_disconnect(struct lbs_private *priv, u16 reason)
1402 {
1403         struct cmd_ds_802_11_deauthenticate cmd;
1404         int ret;
1405 
1406         memset(&cmd, 0, sizeof(cmd));
1407         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1408         /* Mildly ugly to use a locally store my own BSSID ... */
1409         memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
1410         cmd.reasoncode = cpu_to_le16(reason);
1411 
1412         ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
1413         if (ret)
1414                 return ret;
1415 
1416         cfg80211_disconnected(priv->dev,
1417                         reason,
1418                         NULL, 0, true,
1419                         GFP_KERNEL);
1420         priv->connect_status = LBS_DISCONNECTED;
1421 
1422         return 0;
1423 }
1424 
1425 static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
1426         u16 reason_code)
1427 {
1428         struct lbs_private *priv = wiphy_priv(wiphy);
1429 
1430         if (dev == priv->mesh_dev)
1431                 return -EOPNOTSUPP;
1432 
1433         /* store for lbs_cfg_ret_disconnect() */
1434         priv->disassoc_reason = reason_code;
1435 
1436         return lbs_disconnect(priv, reason_code);
1437 }
1438 
1439 static int lbs_cfg_set_default_key(struct wiphy *wiphy,
1440                                    struct net_device *netdev,
1441                                    u8 key_index, bool unicast,
1442                                    bool multicast)
1443 {
1444         struct lbs_private *priv = wiphy_priv(wiphy);
1445 
1446         if (netdev == priv->mesh_dev)
1447                 return -EOPNOTSUPP;
1448 
1449         if (key_index != priv->wep_tx_key) {
1450                 lbs_deb_assoc("set_default_key: to %d\n", key_index);
1451                 priv->wep_tx_key = key_index;
1452                 lbs_set_wep_keys(priv);
1453         }
1454 
1455         return 0;
1456 }
1457 
1458 
1459 static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
1460                            u8 idx, bool pairwise, const u8 *mac_addr,
1461                            struct key_params *params)
1462 {
1463         struct lbs_private *priv = wiphy_priv(wiphy);
1464         u16 key_info;
1465         u16 key_type;
1466         int ret = 0;
1467 
1468         if (netdev == priv->mesh_dev)
1469                 return -EOPNOTSUPP;
1470 
1471         lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
1472                       params->cipher, mac_addr);
1473         lbs_deb_assoc("add_key: key index %d, key len %d\n",
1474                       idx, params->key_len);
1475         if (params->key_len)
1476                 lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
1477                             params->key, params->key_len);
1478 
1479         lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
1480         if (params->seq_len)
1481                 lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
1482                             params->seq, params->seq_len);
1483 
1484         switch (params->cipher) {
1485         case WLAN_CIPHER_SUITE_WEP40:
1486         case WLAN_CIPHER_SUITE_WEP104:
1487                 /* actually compare if something has changed ... */
1488                 if ((priv->wep_key_len[idx] != params->key_len) ||
1489                         memcmp(priv->wep_key[idx],
1490                                params->key, params->key_len) != 0) {
1491                         priv->wep_key_len[idx] = params->key_len;
1492                         memcpy(priv->wep_key[idx],
1493                                params->key, params->key_len);
1494                         lbs_set_wep_keys(priv);
1495                 }
1496                 break;
1497         case WLAN_CIPHER_SUITE_TKIP:
1498         case WLAN_CIPHER_SUITE_CCMP:
1499                 key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
1500                                                    ? KEY_INFO_WPA_UNICAST
1501                                                    : KEY_INFO_WPA_MCAST);
1502                 key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
1503                         ? KEY_TYPE_ID_TKIP
1504                         : KEY_TYPE_ID_AES;
1505                 lbs_set_key_material(priv,
1506                                      key_type,
1507                                      key_info,
1508                                      params->key, params->key_len);
1509                 break;
1510         default:
1511                 wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
1512                 ret = -ENOTSUPP;
1513                 break;
1514         }
1515 
1516         return ret;
1517 }
1518 
1519 
1520 static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
1521                            u8 key_index, bool pairwise, const u8 *mac_addr)
1522 {
1523 
1524         lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
1525                       key_index, mac_addr);
1526 
1527 #ifdef TODO
1528         struct lbs_private *priv = wiphy_priv(wiphy);
1529         /*
1530          * I think can keep this a NO-OP, because:
1531 
1532          * - we clear all keys whenever we do lbs_cfg_connect() anyway
1533          * - neither "iw" nor "wpa_supplicant" won't call this during
1534          *   an ongoing connection
1535          * - TODO: but I have to check if this is still true when
1536          *   I set the AP to periodic re-keying
1537          * - we've not kzallec() something when we've added a key at
1538          *   lbs_cfg_connect() or lbs_cfg_add_key().
1539          *
1540          * This causes lbs_cfg_del_key() only called at disconnect time,
1541          * where we'd just waste time deleting a key that is not going
1542          * to be used anyway.
1543          */
1544         if (key_index < 3 && priv->wep_key_len[key_index]) {
1545                 priv->wep_key_len[key_index] = 0;
1546                 lbs_set_wep_keys(priv);
1547         }
1548 #endif
1549 
1550         return 0;
1551 }
1552 
1553 
1554 /*
1555  * Get station
1556  */
1557 
1558 static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
1559                                const u8 *mac, struct station_info *sinfo)
1560 {
1561         struct lbs_private *priv = wiphy_priv(wiphy);
1562         s8 signal, noise;
1563         int ret;
1564         size_t i;
1565 
1566         sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
1567                          BIT_ULL(NL80211_STA_INFO_TX_PACKETS) |
1568                          BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
1569                          BIT_ULL(NL80211_STA_INFO_RX_PACKETS);
1570         sinfo->tx_bytes = priv->dev->stats.tx_bytes;
1571         sinfo->tx_packets = priv->dev->stats.tx_packets;
1572         sinfo->rx_bytes = priv->dev->stats.rx_bytes;
1573         sinfo->rx_packets = priv->dev->stats.rx_packets;
1574 
1575         /* Get current RSSI */
1576         ret = lbs_get_rssi(priv, &signal, &noise);
1577         if (ret == 0) {
1578                 sinfo->signal = signal;
1579                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
1580         }
1581 
1582         /* Convert priv->cur_rate from hw_value to NL80211 value */
1583         for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
1584                 if (priv->cur_rate == lbs_rates[i].hw_value) {
1585                         sinfo->txrate.legacy = lbs_rates[i].bitrate;
1586                         sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
1587                         break;
1588                 }
1589         }
1590 
1591         return 0;
1592 }
1593 
1594 
1595 
1596 
1597 /*
1598  * Change interface
1599  */
1600 
1601 static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
1602         enum nl80211_iftype type,
1603                struct vif_params *params)
1604 {
1605         struct lbs_private *priv = wiphy_priv(wiphy);
1606         int ret = 0;
1607 
1608         if (dev == priv->mesh_dev)
1609                 return -EOPNOTSUPP;
1610 
1611         switch (type) {
1612         case NL80211_IFTYPE_MONITOR:
1613         case NL80211_IFTYPE_STATION:
1614         case NL80211_IFTYPE_ADHOC:
1615                 break;
1616         default:
1617                 return -EOPNOTSUPP;
1618         }
1619 
1620         if (priv->iface_running)
1621                 ret = lbs_set_iface_type(priv, type);
1622 
1623         if (!ret)
1624                 priv->wdev->iftype = type;
1625 
1626         return ret;
1627 }
1628 
1629 
1630 
1631 /*
1632  * IBSS (Ad-Hoc)
1633  */
1634 
1635 /*
1636  * The firmware needs the following bits masked out of the beacon-derived
1637  * capability field when associating/joining to a BSS:
1638  *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
1639  */
1640 #define CAPINFO_MASK (~(0xda00))
1641 
1642 
1643 static void lbs_join_post(struct lbs_private *priv,
1644                           struct cfg80211_ibss_params *params,
1645                           u8 *bssid, u16 capability)
1646 {
1647         u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
1648                    2 + 4 +                      /* basic rates */
1649                    2 + 1 +                      /* DS parameter */
1650                    2 + 2 +                      /* atim */
1651                    2 + 8];                      /* extended rates */
1652         u8 *fake = fake_ie;
1653         struct cfg80211_bss *bss;
1654 
1655         /*
1656          * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
1657          * the real IE from the firmware. So we fabricate a fake IE based on
1658          * what the firmware actually sends (sniffed with wireshark).
1659          */
1660         /* Fake SSID IE */
1661         *fake++ = WLAN_EID_SSID;
1662         *fake++ = params->ssid_len;
1663         memcpy(fake, params->ssid, params->ssid_len);
1664         fake += params->ssid_len;
1665         /* Fake supported basic rates IE */
1666         *fake++ = WLAN_EID_SUPP_RATES;
1667         *fake++ = 4;
1668         *fake++ = 0x82;
1669         *fake++ = 0x84;
1670         *fake++ = 0x8b;
1671         *fake++ = 0x96;
1672         /* Fake DS channel IE */
1673         *fake++ = WLAN_EID_DS_PARAMS;
1674         *fake++ = 1;
1675         *fake++ = params->chandef.chan->hw_value;
1676         /* Fake IBSS params IE */
1677         *fake++ = WLAN_EID_IBSS_PARAMS;
1678         *fake++ = 2;
1679         *fake++ = 0; /* ATIM=0 */
1680         *fake++ = 0;
1681         /* Fake extended rates IE, TODO: don't add this for 802.11b only,
1682          * but I don't know how this could be checked */
1683         *fake++ = WLAN_EID_EXT_SUPP_RATES;
1684         *fake++ = 8;
1685         *fake++ = 0x0c;
1686         *fake++ = 0x12;
1687         *fake++ = 0x18;
1688         *fake++ = 0x24;
1689         *fake++ = 0x30;
1690         *fake++ = 0x48;
1691         *fake++ = 0x60;
1692         *fake++ = 0x6c;
1693         lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
1694 
1695         bss = cfg80211_inform_bss(priv->wdev->wiphy,
1696                                   params->chandef.chan,
1697                                   CFG80211_BSS_FTYPE_UNKNOWN,
1698                                   bssid,
1699                                   0,
1700                                   capability,
1701                                   params->beacon_interval,
1702                                   fake_ie, fake - fake_ie,
1703                                   0, GFP_KERNEL);
1704         cfg80211_put_bss(priv->wdev->wiphy, bss);
1705 
1706         cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
1707                              GFP_KERNEL);
1708 
1709         /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
1710         priv->connect_status = LBS_CONNECTED;
1711         netif_carrier_on(priv->dev);
1712         if (!priv->tx_pending_len)
1713                 netif_wake_queue(priv->dev);
1714 }
1715 
1716 static int lbs_ibss_join_existing(struct lbs_private *priv,
1717         struct cfg80211_ibss_params *params,
1718         struct cfg80211_bss *bss)
1719 {
1720         const u8 *rates_eid;
1721         struct cmd_ds_802_11_ad_hoc_join cmd;
1722         u8 preamble = RADIO_PREAMBLE_SHORT;
1723         int ret = 0;
1724         int hw, i;
1725         u8 rates_max;
1726         u8 *rates;
1727 
1728         /* TODO: set preamble based on scan result */
1729         ret = lbs_set_radio(priv, preamble, 1);
1730         if (ret)
1731                 goto out;
1732 
1733         /*
1734          * Example CMD_802_11_AD_HOC_JOIN command:
1735          *
1736          * command         2c 00         CMD_802_11_AD_HOC_JOIN
1737          * size            65 00
1738          * sequence        xx xx
1739          * result          00 00
1740          * bssid           02 27 27 97 2f 96
1741          * ssid            49 42 53 53 00 00 00 00
1742          *                 00 00 00 00 00 00 00 00
1743          *                 00 00 00 00 00 00 00 00
1744          *                 00 00 00 00 00 00 00 00
1745          * type            02            CMD_BSS_TYPE_IBSS
1746          * beacon period   64 00
1747          * dtim period     00
1748          * timestamp       00 00 00 00 00 00 00 00
1749          * localtime       00 00 00 00 00 00 00 00
1750          * IE DS           03
1751          * IE DS len       01
1752          * IE DS channel   01
1753          * reserveed       00 00 00 00
1754          * IE IBSS         06
1755          * IE IBSS len     02
1756          * IE IBSS atim    00 00
1757          * reserved        00 00 00 00
1758          * capability      02 00
1759          * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
1760          * fail timeout    ff 00
1761          * probe delay     00 00
1762          */
1763         memset(&cmd, 0, sizeof(cmd));
1764         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1765 
1766         memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
1767         memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
1768         cmd.bss.type = CMD_BSS_TYPE_IBSS;
1769         cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
1770         cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
1771         cmd.bss.ds.header.len = 1;
1772         cmd.bss.ds.channel = params->chandef.chan->hw_value;
1773         cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1774         cmd.bss.ibss.header.len = 2;
1775         cmd.bss.ibss.atimwindow = 0;
1776         cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
1777 
1778         /* set rates to the intersection of our rates and the rates in the
1779            bss */
1780         rcu_read_lock();
1781         rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
1782         if (!rates_eid) {
1783                 lbs_add_rates(cmd.bss.rates);
1784         } else {
1785                 rates_max = rates_eid[1];
1786                 if (rates_max > MAX_RATES) {
1787                         lbs_deb_join("invalid rates");
1788                         rcu_read_unlock();
1789                         ret = -EINVAL;
1790                         goto out;
1791                 }
1792                 rates = cmd.bss.rates;
1793                 for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
1794                         u8 hw_rate = lbs_rates[hw].bitrate / 5;
1795                         for (i = 0; i < rates_max; i++) {
1796                                 if (hw_rate == (rates_eid[i+2] & 0x7f)) {
1797                                         u8 rate = rates_eid[i+2];
1798                                         if (rate == 0x02 || rate == 0x04 ||
1799                                             rate == 0x0b || rate == 0x16)
1800                                                 rate |= 0x80;
1801                                         *rates++ = rate;
1802                                 }
1803                         }
1804                 }
1805         }
1806         rcu_read_unlock();
1807 
1808         /* Only v8 and below support setting this */
1809         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
1810                 cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
1811                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1812         }
1813         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
1814         if (ret)
1815                 goto out;
1816 
1817         /*
1818          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1819          *
1820          * response        2c 80
1821          * size            09 00
1822          * sequence        xx xx
1823          * result          00 00
1824          * reserved        00
1825          */
1826         lbs_join_post(priv, params, bss->bssid, bss->capability);
1827 
1828  out:
1829         return ret;
1830 }
1831 
1832 
1833 
1834 static int lbs_ibss_start_new(struct lbs_private *priv,
1835         struct cfg80211_ibss_params *params)
1836 {
1837         struct cmd_ds_802_11_ad_hoc_start cmd;
1838         struct cmd_ds_802_11_ad_hoc_result *resp =
1839                 (struct cmd_ds_802_11_ad_hoc_result *) &cmd;
1840         u8 preamble = RADIO_PREAMBLE_SHORT;
1841         int ret = 0;
1842         u16 capability;
1843 
1844         ret = lbs_set_radio(priv, preamble, 1);
1845         if (ret)
1846                 goto out;
1847 
1848         /*
1849          * Example CMD_802_11_AD_HOC_START command:
1850          *
1851          * command         2b 00         CMD_802_11_AD_HOC_START
1852          * size            b1 00
1853          * sequence        xx xx
1854          * result          00 00
1855          * ssid            54 45 53 54 00 00 00 00
1856          *                 00 00 00 00 00 00 00 00
1857          *                 00 00 00 00 00 00 00 00
1858          *                 00 00 00 00 00 00 00 00
1859          * bss type        02
1860          * beacon period   64 00
1861          * dtim period     00
1862          * IE IBSS         06
1863          * IE IBSS len     02
1864          * IE IBSS atim    00 00
1865          * reserved        00 00 00 00
1866          * IE DS           03
1867          * IE DS len       01
1868          * IE DS channel   01
1869          * reserved        00 00 00 00
1870          * probe delay     00 00
1871          * capability      02 00
1872          * rates           82 84 8b 96   (basic rates with have bit 7 set)
1873          *                 0c 12 18 24 30 48 60 6c
1874          * padding         100 bytes
1875          */
1876         memset(&cmd, 0, sizeof(cmd));
1877         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1878         memcpy(cmd.ssid, params->ssid, params->ssid_len);
1879         cmd.bsstype = CMD_BSS_TYPE_IBSS;
1880         cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
1881         cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
1882         cmd.ibss.header.len = 2;
1883         cmd.ibss.atimwindow = 0;
1884         cmd.ds.header.id = WLAN_EID_DS_PARAMS;
1885         cmd.ds.header.len = 1;
1886         cmd.ds.channel = params->chandef.chan->hw_value;
1887         /* Only v8 and below support setting probe delay */
1888         if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
1889                 cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
1890         /* TODO: mix in WLAN_CAPABILITY_PRIVACY */
1891         capability = WLAN_CAPABILITY_IBSS;
1892         cmd.capability = cpu_to_le16(capability);
1893         lbs_add_rates(cmd.rates);
1894 
1895 
1896         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
1897         if (ret)
1898                 goto out;
1899 
1900         /*
1901          * This is a sample response to CMD_802_11_AD_HOC_JOIN:
1902          *
1903          * response        2b 80
1904          * size            14 00
1905          * sequence        xx xx
1906          * result          00 00
1907          * reserved        00
1908          * bssid           02 2b 7b 0f 86 0e
1909          */
1910         lbs_join_post(priv, params, resp->bssid, capability);
1911 
1912  out:
1913         return ret;
1914 }
1915 
1916 
1917 static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1918                 struct cfg80211_ibss_params *params)
1919 {
1920         struct lbs_private *priv = wiphy_priv(wiphy);
1921         int ret = 0;
1922         struct cfg80211_bss *bss;
1923 
1924         if (dev == priv->mesh_dev)
1925                 return -EOPNOTSUPP;
1926 
1927         if (!params->chandef.chan) {
1928                 ret = -ENOTSUPP;
1929                 goto out;
1930         }
1931 
1932         ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
1933         if (ret)
1934                 goto out;
1935 
1936         /* Search if someone is beaconing. This assumes that the
1937          * bss list is populated already */
1938         bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
1939                 params->ssid, params->ssid_len,
1940                 IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
1941 
1942         if (bss) {
1943                 ret = lbs_ibss_join_existing(priv, params, bss);
1944                 cfg80211_put_bss(wiphy, bss);
1945         } else
1946                 ret = lbs_ibss_start_new(priv, params);
1947 
1948 
1949  out:
1950         return ret;
1951 }
1952 
1953 
1954 static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1955 {
1956         struct lbs_private *priv = wiphy_priv(wiphy);
1957         struct cmd_ds_802_11_ad_hoc_stop cmd;
1958         int ret = 0;
1959 
1960         if (dev == priv->mesh_dev)
1961                 return -EOPNOTSUPP;
1962 
1963         memset(&cmd, 0, sizeof(cmd));
1964         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1965         ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
1966 
1967         /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
1968         lbs_mac_event_disconnected(priv, true);
1969 
1970         return ret;
1971 }
1972 
1973 
1974 
1975 static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1976                               bool enabled, int timeout)
1977 {
1978         struct lbs_private *priv = wiphy_priv(wiphy);
1979 
1980         if  (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
1981                 if (!enabled)
1982                         return 0;
1983                 else
1984                         return -EINVAL;
1985         }
1986         /* firmware does not work well with too long latency with power saving
1987          * enabled, so do not enable it if there is only polling, no
1988          * interrupts (like in some sdio hosts which can only
1989          * poll for sdio irqs)
1990          */
1991         if  (priv->is_polling) {
1992                 if (!enabled)
1993                         return 0;
1994                 else
1995                         return -EINVAL;
1996         }
1997         if (!enabled) {
1998                 priv->psmode = LBS802_11POWERMODECAM;
1999                 if (priv->psstate != PS_STATE_FULL_POWER)
2000                         lbs_set_ps_mode(priv,
2001                                         PS_MODE_ACTION_EXIT_PS,
2002                                         true);
2003                 return 0;
2004         }
2005         if (priv->psmode != LBS802_11POWERMODECAM)
2006                 return 0;
2007         priv->psmode = LBS802_11POWERMODEMAX_PSP;
2008         if (priv->connect_status == LBS_CONNECTED)
2009                 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
2010         return 0;
2011 }
2012 
2013 /*
2014  * Initialization
2015  */
2016 
2017 static const struct cfg80211_ops lbs_cfg80211_ops = {
2018         .set_monitor_channel = lbs_cfg_set_monitor_channel,
2019         .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
2020         .scan = lbs_cfg_scan,
2021         .connect = lbs_cfg_connect,
2022         .disconnect = lbs_cfg_disconnect,
2023         .add_key = lbs_cfg_add_key,
2024         .del_key = lbs_cfg_del_key,
2025         .set_default_key = lbs_cfg_set_default_key,
2026         .get_station = lbs_cfg_get_station,
2027         .change_virtual_intf = lbs_change_intf,
2028         .join_ibss = lbs_join_ibss,
2029         .leave_ibss = lbs_leave_ibss,
2030         .set_power_mgmt = lbs_set_power_mgmt,
2031 };
2032 
2033 
2034 /*
2035  * At this time lbs_private *priv doesn't even exist, so we just allocate
2036  * memory and don't initialize the wiphy further. This is postponed until we
2037  * can talk to the firmware and happens at registration time in
2038  * lbs_cfg_wiphy_register().
2039  */
2040 struct wireless_dev *lbs_cfg_alloc(struct device *dev)
2041 {
2042         int ret = 0;
2043         struct wireless_dev *wdev;
2044 
2045         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
2046         if (!wdev)
2047                 return ERR_PTR(-ENOMEM);
2048 
2049         wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
2050         if (!wdev->wiphy) {
2051                 dev_err(dev, "cannot allocate wiphy\n");
2052                 ret = -ENOMEM;
2053                 goto err_wiphy_new;
2054         }
2055 
2056         return wdev;
2057 
2058  err_wiphy_new:
2059         kfree(wdev);
2060         return ERR_PTR(ret);
2061 }
2062 
2063 
2064 static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
2065 {
2066         struct region_code_mapping {
2067                 const char *cn;
2068                 int code;
2069         };
2070 
2071         /* Section 5.17.2 */
2072         static const struct region_code_mapping regmap[] = {
2073                 {"US ", 0x10}, /* US FCC */
2074                 {"CA ", 0x20}, /* Canada */
2075                 {"EU ", 0x30}, /* ETSI   */
2076                 {"ES ", 0x31}, /* Spain  */
2077                 {"FR ", 0x32}, /* France */
2078                 {"JP ", 0x40}, /* Japan  */
2079         };
2080         size_t i;
2081 
2082         for (i = 0; i < ARRAY_SIZE(regmap); i++)
2083                 if (regmap[i].code == priv->regioncode) {
2084                         regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
2085                         break;
2086                 }
2087 }
2088 
2089 static void lbs_reg_notifier(struct wiphy *wiphy,
2090                              struct regulatory_request *request)
2091 {
2092         struct lbs_private *priv = wiphy_priv(wiphy);
2093 
2094         memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
2095         if (lbs_iface_active(priv))
2096                 lbs_set_11d_domain_info(priv);
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         wdev->wiphy->max_scan_ssids = 1;
2110         wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
2111 
2112         wdev->wiphy->interface_modes =
2113                         BIT(NL80211_IFTYPE_STATION) |
2114                         BIT(NL80211_IFTYPE_ADHOC);
2115         if (lbs_rtap_supported(priv))
2116                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
2117         if (lbs_mesh_activated(priv))
2118                 wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
2119 
2120         wdev->wiphy->bands[NL80211_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         return ret;
2145 }
2146 
2147 void lbs_scan_deinit(struct lbs_private *priv)
2148 {
2149         cancel_delayed_work_sync(&priv->scan_work);
2150 }
2151 
2152 
2153 void lbs_cfg_free(struct lbs_private *priv)
2154 {
2155         struct wireless_dev *wdev = priv->wdev;
2156 
2157         if (!wdev)
2158                 return;
2159 
2160         if (priv->wiphy_registered)
2161                 wiphy_unregister(wdev->wiphy);
2162 
2163         if (wdev->wiphy)
2164                 wiphy_free(wdev->wiphy);
2165 
2166         kfree(wdev);
2167 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/wireless/marvell/libertas/cfg.c

DEFINITIONS
