drivers/net/wireless/zd1211rw/zd_mac.c

   1 /* zd_mac.c
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  16  */
  17
  18 #include <linux/netdevice.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/wireless.h>
  21 #include <linux/usb.h>
  22 #include <linux/jiffies.h>
  23 #include <net/ieee80211_radiotap.h>
  24
  25 #include "zd_def.h"
  26 #include "zd_chip.h"
  27 #include "zd_mac.h"
  28 #include "zd_ieee80211.h"
  29 #include "zd_netdev.h"
  30 #include "zd_rf.h"
  31 #include "zd_util.h"
  32
  33 static void ieee_init(struct ieee80211_device *ieee);
  34 static void softmac_init(struct ieee80211softmac_device *sm);
  35 static void set_rts_cts_work(struct work_struct *work);
  36 static void set_basic_rates_work(struct work_struct *work);
  37
  38 static void housekeeping_init(struct zd_mac *mac);
  39 static void housekeeping_enable(struct zd_mac *mac);
  40 static void housekeeping_disable(struct zd_mac *mac);
  41
  42 static void set_multicast_hash_handler(struct work_struct *work);
  43
  44 int zd_mac_init(struct zd_mac *mac,
  45                 struct net_device *netdev,
  46                 struct usb_interface *intf)
  47 {
  48         struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev);
  49
  50         memset(mac, 0, sizeof(*mac));
  51         spin_lock_init(&mac->lock);
  52         mac->netdev = netdev;
  53         INIT_DELAYED_WORK(&mac->set_rts_cts_work, set_rts_cts_work);
  54         INIT_DELAYED_WORK(&mac->set_basic_rates_work, set_basic_rates_work);
  55
  56         ieee_init(ieee);
  57         softmac_init(ieee80211_priv(netdev));
  58         zd_chip_init(&mac->chip, netdev, intf);
  59         housekeeping_init(mac);
  60         INIT_WORK(&mac->set_multicast_hash_work, set_multicast_hash_handler);
  61         return 0;
  62 }
  63
  64 static int reset_channel(struct zd_mac *mac)
  65 {
  66         int r;
  67         unsigned long flags;
  68         const struct channel_range *range;
  69
  70         spin_lock_irqsave(&mac->lock, flags);
  71         range = zd_channel_range(mac->regdomain);
  72         if (!range->start) {
  73                 r = -EINVAL;
  74                 goto out;
  75         }
  76         mac->requested_channel = range->start;
  77         r = 0;
  78 out:
  79         spin_unlock_irqrestore(&mac->lock, flags);
  80         return r;
  81 }
  82
  83 int zd_mac_init_hw(struct zd_mac *mac, u8 device_type)
  84 {
  85         int r;
  86         struct zd_chip *chip = &mac->chip;
  87         u8 addr[ETH_ALEN];
  88         u8 default_regdomain;
  89
  90         r = zd_chip_enable_int(chip);
  91         if (r)
  92                 goto out;
  93         r = zd_chip_init_hw(chip, device_type);
  94         if (r)
  95                 goto disable_int;
  96
  97         zd_get_e2p_mac_addr(chip, addr);
  98         r = zd_write_mac_addr(chip, addr);
  99         if (r)
 100                 goto disable_int;
 101         ZD_ASSERT(!irqs_disabled());
 102         spin_lock_irq(&mac->lock);
 103         memcpy(mac->netdev->dev_addr, addr, ETH_ALEN);
 104         spin_unlock_irq(&mac->lock);
 105
 106         r = zd_read_regdomain(chip, &default_regdomain);
 107         if (r)
 108                 goto disable_int;
 109         if (!zd_regdomain_supported(default_regdomain)) {
 110                 dev_dbg_f(zd_mac_dev(mac),
 111                           "Regulatory Domain %#04x is not supported.\n",
 112                           default_regdomain);
 113                 r = -EINVAL;
 114                 goto disable_int;
 115         }
 116         spin_lock_irq(&mac->lock);
 117         mac->regdomain = mac->default_regdomain = default_regdomain;
 118         spin_unlock_irq(&mac->lock);
 119         r = reset_channel(mac);
 120         if (r)
 121                 goto disable_int;
 122
 123         /* We must inform the device that we are doing encryption/decryption in
 124          * software at the moment. */
 125         r = zd_set_encryption_type(chip, ENC_SNIFFER);
 126         if (r)
 127                 goto disable_int;
 128
 129         r = zd_geo_init(zd_mac_to_ieee80211(mac), mac->regdomain);
 130         if (r)
 131                 goto disable_int;
 132
 133         r = 0;
 134 disable_int:
 135         zd_chip_disable_int(chip);
 136 out:
 137         return r;
 138 }
 139
 140 void zd_mac_clear(struct zd_mac *mac)
 141 {
 142         flush_workqueue(zd_workqueue);
 143         zd_chip_clear(&mac->chip);
 144         ZD_ASSERT(!spin_is_locked(&mac->lock));
 145         ZD_MEMCLEAR(mac, sizeof(struct zd_mac));
 146 }
 147
 148 static int reset_mode(struct zd_mac *mac)
 149 {
 150         struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
 151         struct zd_ioreq32 ioreqs[3] = {
 152                 { CR_RX_FILTER, STA_RX_FILTER },
 153                 { CR_SNIFFER_ON, 0U },
 154         };
 155
 156         if (ieee->iw_mode == IW_MODE_MONITOR) {
 157                 ioreqs[0].value = 0xffffffff;
 158                 ioreqs[1].value = 0x1;
 159                 ioreqs[2].value = ENC_SNIFFER;
 160         }
 161
 162         return zd_iowrite32a(&mac->chip, ioreqs, 3);
 163 }
 164
 165 int zd_mac_open(struct net_device *netdev)
 166 {
 167         struct zd_mac *mac = zd_netdev_mac(netdev);
 168         struct zd_chip *chip = &mac->chip;
 169         int r;
 170
 171         r = zd_chip_enable_int(chip);
 172         if (r < 0)
 173                 goto out;
 174
 175         r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G);
 176         if (r < 0)
 177                 goto disable_int;
 178         r = reset_mode(mac);
 179         if (r)
 180                 goto disable_int;
 181         r = zd_chip_switch_radio_on(chip);
 182         if (r < 0)
 183                 goto disable_int;
 184         r = zd_chip_set_channel(chip, mac->requested_channel);
 185         if (r < 0)
 186                 goto disable_radio;
 187         r = zd_chip_enable_rx(chip);
 188         if (r < 0)
 189                 goto disable_radio;
 190         r = zd_chip_enable_hwint(chip);
 191         if (r < 0)
 192                 goto disable_rx;
 193
 194         housekeeping_enable(mac);
 195         ieee80211softmac_start(netdev);
 196         return 0;
 197 disable_rx:
 198         zd_chip_disable_rx(chip);
 199 disable_radio:
 200         zd_chip_switch_radio_off(chip);
 201 disable_int:
 202         zd_chip_disable_int(chip);
 203 out:
 204         return r;
 205 }
 206
 207 int zd_mac_stop(struct net_device *netdev)
 208 {
 209         struct zd_mac *mac = zd_netdev_mac(netdev);
 210         struct zd_chip *chip = &mac->chip;
 211
 212         netif_stop_queue(netdev);
 213
 214         /*
 215          * The order here deliberately is a little different from the open()
 216          * method, since we need to make sure there is no opportunity for RX
 217          * frames to be processed by softmac after we have stopped it.
 218          */
 219
 220         zd_chip_disable_rx(chip);
 221         housekeeping_disable(mac);
 222         ieee80211softmac_stop(netdev);
 223
 224         /* Ensure no work items are running or queued from this point */
 225         cancel_delayed_work(&mac->set_rts_cts_work);
 226         cancel_delayed_work(&mac->set_basic_rates_work);
 227         flush_workqueue(zd_workqueue);
 228         mac->updating_rts_rate = 0;
 229         mac->updating_basic_rates = 0;
 230
 231         zd_chip_disable_hwint(chip);
 232         zd_chip_switch_radio_off(chip);
 233         zd_chip_disable_int(chip);
 234
 235         return 0;
 236 }
 237
 238 int zd_mac_set_mac_address(struct net_device *netdev, void *p)
 239 {
 240         int r;
 241         unsigned long flags;
 242         struct sockaddr *addr = p;
 243         struct zd_mac *mac = zd_netdev_mac(netdev);
 244         struct zd_chip *chip = &mac->chip;
 245
 246         if (!is_valid_ether_addr(addr->sa_data))
 247                 return -EADDRNOTAVAIL;
 248
 249         dev_dbg_f(zd_mac_dev(mac),
 250                   "Setting MAC to " MAC_FMT "\n", MAC_ARG(addr->sa_data));
 251
 252         r = zd_write_mac_addr(chip, addr->sa_data);
 253         if (r)
 254                 return r;
 255
 256         spin_lock_irqsave(&mac->lock, flags);
 257         memcpy(netdev->dev_addr, addr->sa_data, ETH_ALEN);
 258         spin_unlock_irqrestore(&mac->lock, flags);
 259
 260         return 0;
 261 }
 262
 263 static void set_multicast_hash_handler(struct work_struct *work)
 264 {
 265         struct zd_mac *mac = container_of(work, struct zd_mac,
 266                                           set_multicast_hash_work);
 267         struct zd_mc_hash hash;
 268
 269         spin_lock_irq(&mac->lock);
 270         hash = mac->multicast_hash;
 271         spin_unlock_irq(&mac->lock);
 272
 273         zd_chip_set_multicast_hash(&mac->chip, &hash);
 274 }
 275
 276 void zd_mac_set_multicast_list(struct net_device *dev)
 277 {
 278         struct zd_mc_hash hash;
 279         struct zd_mac *mac = zd_netdev_mac(dev);
 280         struct dev_mc_list *mc;
 281         unsigned long flags;
 282
 283         if (dev->flags & (IFF_PROMISC|IFF_ALLMULTI)) {
 284                 zd_mc_add_all(&hash);
 285         } else {
 286                 zd_mc_clear(&hash);
 287                 for (mc = dev->mc_list; mc; mc = mc->next) {
 288                         dev_dbg_f(zd_mac_dev(mac), "mc addr " MAC_FMT "\n",
 289                                   MAC_ARG(mc->dmi_addr));
 290                         zd_mc_add_addr(&hash, mc->dmi_addr);
 291                 }
 292         }
 293
 294         spin_lock_irqsave(&mac->lock, flags);
 295         mac->multicast_hash = hash;
 296         spin_unlock_irqrestore(&mac->lock, flags);
 297         queue_work(zd_workqueue, &mac->set_multicast_hash_work);
 298 }
 299
 300 int zd_mac_set_regdomain(struct zd_mac *mac, u8 regdomain)
 301 {
 302         int r;
 303         u8 channel;
 304
 305         ZD_ASSERT(!irqs_disabled());
 306         spin_lock_irq(&mac->lock);
 307         if (regdomain == 0) {
 308                 regdomain = mac->default_regdomain;
 309         }
 310         if (!zd_regdomain_supported(regdomain)) {
 311                 spin_unlock_irq(&mac->lock);
 312                 return -EINVAL;
 313         }
 314         mac->regdomain = regdomain;
 315         channel = mac->requested_channel;
 316         spin_unlock_irq(&mac->lock);
 317
 318         r = zd_geo_init(zd_mac_to_ieee80211(mac), regdomain);
 319         if (r)
 320                 return r;
 321         if (!zd_regdomain_supports_channel(regdomain, channel)) {
 322                 r = reset_channel(mac);
 323                 if (r)
 324                         return r;
 325         }
 326
 327         return 0;
 328 }
 329
 330 u8 zd_mac_get_regdomain(struct zd_mac *mac)
 331 {
 332         unsigned long flags;
 333         u8 regdomain;
 334
 335         spin_lock_irqsave(&mac->lock, flags);
 336         regdomain = mac->regdomain;
 337         spin_unlock_irqrestore(&mac->lock, flags);
 338         return regdomain;
 339 }
 340
 341 /* Fallback to lowest rate, if rate is unknown. */
 342 static u8 rate_to_zd_rate(u8 rate)
 343 {
 344         switch (rate) {
 345         case IEEE80211_CCK_RATE_2MB:
 346                 return ZD_CCK_RATE_2M;
 347         case IEEE80211_CCK_RATE_5MB:
 348                 return ZD_CCK_RATE_5_5M;
 349         case IEEE80211_CCK_RATE_11MB:
 350                 return ZD_CCK_RATE_11M;
 351         case IEEE80211_OFDM_RATE_6MB:
 352                 return ZD_OFDM_RATE_6M;
 353         case IEEE80211_OFDM_RATE_9MB:
 354                 return ZD_OFDM_RATE_9M;
 355         case IEEE80211_OFDM_RATE_12MB:
 356                 return ZD_OFDM_RATE_12M;
 357         case IEEE80211_OFDM_RATE_18MB:
 358                 return ZD_OFDM_RATE_18M;
 359         case IEEE80211_OFDM_RATE_24MB:
 360                 return ZD_OFDM_RATE_24M;
 361         case IEEE80211_OFDM_RATE_36MB:
 362                 return ZD_OFDM_RATE_36M;
 363         case IEEE80211_OFDM_RATE_48MB:
 364                 return ZD_OFDM_RATE_48M;
 365         case IEEE80211_OFDM_RATE_54MB:
 366                 return ZD_OFDM_RATE_54M;
 367         }
 368         return ZD_CCK_RATE_1M;
 369 }
 370
 371 static u16 rate_to_cr_rate(u8 rate)
 372 {
 373         switch (rate) {
 374         case IEEE80211_CCK_RATE_2MB:
 375                 return CR_RATE_1M;
 376         case IEEE80211_CCK_RATE_5MB:
 377                 return CR_RATE_5_5M;
 378         case IEEE80211_CCK_RATE_11MB:
 379                 return CR_RATE_11M;
 380         case IEEE80211_OFDM_RATE_6MB:
 381                 return CR_RATE_6M;
 382         case IEEE80211_OFDM_RATE_9MB:
 383                 return CR_RATE_9M;
 384         case IEEE80211_OFDM_RATE_12MB:
 385                 return CR_RATE_12M;
 386         case IEEE80211_OFDM_RATE_18MB:
 387                 return CR_RATE_18M;
 388         case IEEE80211_OFDM_RATE_24MB:
 389                 return CR_RATE_24M;
 390         case IEEE80211_OFDM_RATE_36MB:
 391                 return CR_RATE_36M;
 392         case IEEE80211_OFDM_RATE_48MB:
 393                 return CR_RATE_48M;
 394         case IEEE80211_OFDM_RATE_54MB:
 395                 return CR_RATE_54M;
 396         }
 397         return CR_RATE_1M;
 398 }
 399
 400 static void try_enable_tx(struct zd_mac *mac)
 401 {
 402         unsigned long flags;
 403
 404         spin_lock_irqsave(&mac->lock, flags);
 405         if (mac->updating_rts_rate == 0 && mac->updating_basic_rates == 0)
 406                 netif_wake_queue(mac->netdev);
 407         spin_unlock_irqrestore(&mac->lock, flags);
 408 }
 409
 410 static void set_rts_cts_work(struct work_struct *work)
 411 {
 412         struct zd_mac *mac =
 413                 container_of(work, struct zd_mac, set_rts_cts_work.work);
 414         unsigned long flags;
 415         u8 rts_rate;
 416         unsigned int short_preamble;
 417
 418         mutex_lock(&mac->chip.mutex);
 419
 420         spin_lock_irqsave(&mac->lock, flags);
 421         mac->updating_rts_rate = 0;
 422         rts_rate = mac->rts_rate;
 423         short_preamble = mac->short_preamble;
 424         spin_unlock_irqrestore(&mac->lock, flags);
 425
 426         zd_chip_set_rts_cts_rate_locked(&mac->chip, rts_rate, short_preamble);
 427         mutex_unlock(&mac->chip.mutex);
 428
 429         try_enable_tx(mac);
 430 }
 431
 432 static void set_basic_rates_work(struct work_struct *work)
 433 {
 434         struct zd_mac *mac =
 435                 container_of(work, struct zd_mac, set_basic_rates_work.work);
 436         unsigned long flags;
 437         u16 basic_rates;
 438
 439         mutex_lock(&mac->chip.mutex);
 440
 441         spin_lock_irqsave(&mac->lock, flags);
 442         mac->updating_basic_rates = 0;
 443         basic_rates = mac->basic_rates;
 444         spin_unlock_irqrestore(&mac->lock, flags);
 445
 446         zd_chip_set_basic_rates_locked(&mac->chip, basic_rates);
 447         mutex_unlock(&mac->chip.mutex);
 448
 449         try_enable_tx(mac);
 450 }
 451
 452 static void bssinfo_change(struct net_device *netdev, u32 changes)
 453 {
 454         struct zd_mac *mac = zd_netdev_mac(netdev);
 455         struct ieee80211softmac_device *softmac = ieee80211_priv(netdev);
 456         struct ieee80211softmac_bss_info *bssinfo = &softmac->bssinfo;
 457         int need_set_rts_cts = 0;
 458         int need_set_rates = 0;
 459         u16 basic_rates;
 460         unsigned long flags;
 461
 462         dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes);
 463
 464         if (changes & IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE) {
 465                 spin_lock_irqsave(&mac->lock, flags);
 466                 mac->short_preamble = bssinfo->short_preamble;
 467                 spin_unlock_irqrestore(&mac->lock, flags);
 468                 need_set_rts_cts = 1;
 469         }
 470
 471         if (changes & IEEE80211SOFTMAC_BSSINFOCHG_RATES) {
 472                 /* Set RTS rate to highest available basic rate */
 473                 u8 rate = ieee80211softmac_highest_supported_rate(softmac,
 474                         &bssinfo->supported_rates, 1);
 475                 rate = rate_to_zd_rate(rate);
 476
 477                 spin_lock_irqsave(&mac->lock, flags);
 478                 if (rate != mac->rts_rate) {
 479                         mac->rts_rate = rate;
 480                         need_set_rts_cts = 1;
 481                 }
 482                 spin_unlock_irqrestore(&mac->lock, flags);
 483
 484                 /* Set basic rates */
 485                 need_set_rates = 1;
 486                 if (bssinfo->supported_rates.count == 0) {
 487                         /* Allow the device to be flexible */
 488                         basic_rates = CR_RATES_80211B | CR_RATES_80211G;
 489                 } else {
 490                         int i = 0;
 491                         basic_rates = 0;
 492
 493                         for (i = 0; i < bssinfo->supported_rates.count; i++) {
 494                                 u16 rate = bssinfo->supported_rates.rates[i];
 495                                 if ((rate & IEEE80211_BASIC_RATE_MASK) == 0)
 496                                         continue;
 497
 498                                 rate &= ~IEEE80211_BASIC_RATE_MASK;
 499                                 basic_rates |= rate_to_cr_rate(rate);
 500                         }
 501                 }
 502                 spin_lock_irqsave(&mac->lock, flags);
 503                 mac->basic_rates = basic_rates;
 504                 spin_unlock_irqrestore(&mac->lock, flags);
 505         }
 506
 507         /* Schedule any changes we made above */
 508
 509         spin_lock_irqsave(&mac->lock, flags);
 510         if (need_set_rts_cts && !mac->updating_rts_rate) {
 511                 mac->updating_rts_rate = 1;
 512                 netif_stop_queue(mac->netdev);
 513                 queue_delayed_work(zd_workqueue, &mac->set_rts_cts_work, 0);
 514         }
 515         if (need_set_rates && !mac->updating_basic_rates) {
 516                 mac->updating_basic_rates = 1;
 517                 netif_stop_queue(mac->netdev);
 518                 queue_delayed_work(zd_workqueue, &mac->set_basic_rates_work,
 519                                    0);
 520         }
 521         spin_unlock_irqrestore(&mac->lock, flags);
 522 }
 523
 524 static void set_channel(struct net_device *netdev, u8 channel)
 525 {
 526         struct zd_mac *mac = zd_netdev_mac(netdev);
 527
 528         dev_dbg_f(zd_mac_dev(mac), "channel %d\n", channel);
 529
 530         zd_chip_set_channel(&mac->chip, channel);
 531 }
 532
 533 int zd_mac_request_channel(struct zd_mac *mac, u8 channel)
 534 {
 535         unsigned long lock_flags;
 536         struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
 537
 538         if (ieee->iw_mode == IW_MODE_INFRA)
 539                 return -EPERM;
 540
 541         spin_lock_irqsave(&mac->lock, lock_flags);
 542         if (!zd_regdomain_supports_channel(mac->regdomain, channel)) {
 543                 spin_unlock_irqrestore(&mac->lock, lock_flags);
 544                 return -EINVAL;
 545         }
 546         mac->requested_channel = channel;
 547         spin_unlock_irqrestore(&mac->lock, lock_flags);
 548         if (netif_running(mac->netdev))
 549                 return zd_chip_set_channel(&mac->chip, channel);
 550         else
 551                 return 0;
 552 }
 553
 554 u8 zd_mac_get_channel(struct zd_mac *mac)
 555 {
 556         u8 channel = zd_chip_get_channel(&mac->chip);
 557
 558         dev_dbg_f(zd_mac_dev(mac), "channel %u\n", channel);
 559         return channel;
 560 }
 561
 562 /* If wrong rate is given, we are falling back to the slowest rate: 1MBit/s */
 563 static u8 zd_rate_typed(u8 zd_rate)
 564 {
 565         static const u8 typed_rates[16] = {
 566                 [ZD_CCK_RATE_1M]        = ZD_CS_CCK|ZD_CCK_RATE_1M,
 567                 [ZD_CCK_RATE_2M]        = ZD_CS_CCK|ZD_CCK_RATE_2M,
 568                 [ZD_CCK_RATE_5_5M]      = ZD_CS_CCK|ZD_CCK_RATE_5_5M,
 569                 [ZD_CCK_RATE_11M]       = ZD_CS_CCK|ZD_CCK_RATE_11M,
 570                 [ZD_OFDM_RATE_6M]       = ZD_CS_OFDM|ZD_OFDM_RATE_6M,
 571                 [ZD_OFDM_RATE_9M]       = ZD_CS_OFDM|ZD_OFDM_RATE_9M,
 572                 [ZD_OFDM_RATE_12M]      = ZD_CS_OFDM|ZD_OFDM_RATE_12M,
 573                 [ZD_OFDM_RATE_18M]      = ZD_CS_OFDM|ZD_OFDM_RATE_18M,
 574                 [ZD_OFDM_RATE_24M]      = ZD_CS_OFDM|ZD_OFDM_RATE_24M,
 575                 [ZD_OFDM_RATE_36M]      = ZD_CS_OFDM|ZD_OFDM_RATE_36M,
 576                 [ZD_OFDM_RATE_48M]      = ZD_CS_OFDM|ZD_OFDM_RATE_48M,
 577                 [ZD_OFDM_RATE_54M]      = ZD_CS_OFDM|ZD_OFDM_RATE_54M,
 578         };
 579
 580         ZD_ASSERT(ZD_CS_RATE_MASK == 0x0f);
 581         return typed_rates[zd_rate & ZD_CS_RATE_MASK];
 582 }
 583
 584 int zd_mac_set_mode(struct zd_mac *mac, u32 mode)
 585 {
 586         struct ieee80211_device *ieee;
 587
 588         switch (mode) {
 589         case IW_MODE_AUTO:
 590         case IW_MODE_ADHOC:
 591         case IW_MODE_INFRA:
 592                 mac->netdev->type = ARPHRD_ETHER;
 593                 break;
 594         case IW_MODE_MONITOR:
 595                 mac->netdev->type = ARPHRD_IEEE80211_RADIOTAP;
 596                 break;
 597         default:
 598                 dev_dbg_f(zd_mac_dev(mac), "wrong mode %u\n", mode);
 599                 return -EINVAL;
 600         }
 601
 602         ieee = zd_mac_to_ieee80211(mac);
 603         ZD_ASSERT(!irqs_disabled());
 604         spin_lock_irq(&ieee->lock);
 605         ieee->iw_mode = mode;
 606         spin_unlock_irq(&ieee->lock);
 607
 608         if (netif_running(mac->netdev))
 609                 return reset_mode(mac);
 610
 611         return 0;
 612 }
 613
 614 int zd_mac_get_mode(struct zd_mac *mac, u32 *mode)
 615 {
 616         unsigned long flags;
 617         struct ieee80211_device *ieee;
 618
 619         ieee = zd_mac_to_ieee80211(mac);
 620         spin_lock_irqsave(&ieee->lock, flags);
 621         *mode = ieee->iw_mode;
 622         spin_unlock_irqrestore(&ieee->lock, flags);
 623         return 0;
 624 }
 625
 626 int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range)
 627 {
 628         int i;
 629         const struct channel_range *channel_range;
 630         u8 regdomain;
 631
 632         memset(range, 0, sizeof(*range));
 633
 634         /* FIXME: Not so important and depends on the mode. For 802.11g
 635          * usually this value is used. It seems to be that Bit/s number is
 636          * given here.
 637          */
 638         range->throughput = 27 * 1000 * 1000;
 639
 640         range->max_qual.qual = 100;
 641         range->max_qual.level = 100;
 642
 643         /* FIXME: Needs still to be tuned. */
 644         range->avg_qual.qual = 71;
 645         range->avg_qual.level = 80;
 646
 647         /* FIXME: depends on standard? */
 648         range->min_rts = 256;
 649         range->max_rts = 2346;
 650
 651         range->min_frag = MIN_FRAG_THRESHOLD;
 652         range->max_frag = MAX_FRAG_THRESHOLD;
 653
 654         range->max_encoding_tokens = WEP_KEYS;
 655         range->num_encoding_sizes = 2;
 656         range->encoding_size[0] = 5;
 657         range->encoding_size[1] = WEP_KEY_LEN;
 658
 659         range->we_version_compiled = WIRELESS_EXT;
 660         range->we_version_source = 20;
 661
 662         range->enc_capa = IW_ENC_CAPA_WPA |  IW_ENC_CAPA_WPA2 |
 663                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 664
 665         ZD_ASSERT(!irqs_disabled());
 666         spin_lock_irq(&mac->lock);
 667         regdomain = mac->regdomain;
 668         spin_unlock_irq(&mac->lock);
 669         channel_range = zd_channel_range(regdomain);
 670
 671         range->num_channels = channel_range->end - channel_range->start;
 672         range->old_num_channels = range->num_channels;
 673         range->num_frequency = range->num_channels;
 674         range->old_num_frequency = range->num_frequency;
 675
 676         for (i = 0; i < range->num_frequency; i++) {
 677                 struct iw_freq *freq = &range->freq[i];
 678                 freq->i = channel_range->start + i;
 679                 zd_channel_to_freq(freq, freq->i);
 680         }
 681
 682         return 0;
 683 }
 684
 685 static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length)
 686 {
 687         static const u8 rate_divisor[] = {
 688                 [ZD_CCK_RATE_1M]        =  1,
 689                 [ZD_CCK_RATE_2M]        =  2,
 690                 [ZD_CCK_RATE_5_5M]      = 11, /* bits must be doubled */
 691                 [ZD_CCK_RATE_11M]       = 11,
 692                 [ZD_OFDM_RATE_6M]       =  6,
 693                 [ZD_OFDM_RATE_9M]       =  9,
 694                 [ZD_OFDM_RATE_12M]      = 12,
 695                 [ZD_OFDM_RATE_18M]      = 18,
 696                 [ZD_OFDM_RATE_24M]      = 24,
 697                 [ZD_OFDM_RATE_36M]      = 36,
 698                 [ZD_OFDM_RATE_48M]      = 48,
 699                 [ZD_OFDM_RATE_54M]      = 54,
 700         };
 701
 702         u32 bits = (u32)tx_length * 8;
 703         u32 divisor;
 704
 705         divisor = rate_divisor[zd_rate];
 706         if (divisor == 0)
 707                 return -EINVAL;
 708
 709         switch (zd_rate) {
 710         case ZD_CCK_RATE_5_5M:
 711                 bits = (2*bits) + 10; /* round up to the next integer */
 712                 break;
 713         case ZD_CCK_RATE_11M:
 714                 if (service) {
 715                         u32 t = bits % 11;
 716                         *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION;
 717                         if (0 < t && t <= 3) {
 718                                 *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION;
 719                         }
 720                 }
 721                 bits += 10; /* round up to the next integer */
 722                 break;
 723         }
 724
 725         return bits/divisor;
 726 }
 727
 728 enum {
 729         R2M_SHORT_PREAMBLE = 0x01,
 730         R2M_11A            = 0x02,
 731 };
 732
 733 static u8 zd_rate_to_modulation(u8 zd_rate, int flags)
 734 {
 735         u8 modulation;
 736
 737         modulation = zd_rate_typed(zd_rate);
 738         if (flags & R2M_SHORT_PREAMBLE) {
 739                 switch (ZD_CS_RATE(modulation)) {
 740                 case ZD_CCK_RATE_2M:
 741                 case ZD_CCK_RATE_5_5M:
 742                 case ZD_CCK_RATE_11M:
 743                         modulation |= ZD_CS_CCK_PREA_SHORT;
 744                         return modulation;
 745                 }
 746         }
 747         if (flags & R2M_11A) {
 748                 if (ZD_CS_TYPE(modulation) == ZD_CS_OFDM)
 749                         modulation |= ZD_CS_OFDM_MODE_11A;
 750         }
 751         return modulation;
 752 }
 753
 754 static void cs_set_modulation(struct zd_mac *mac, struct zd_ctrlset *cs,
 755                               struct ieee80211_hdr_4addr *hdr)
 756 {
 757         struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev);
 758         u16 ftype = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_ctl));
 759         u8 rate, zd_rate;
 760         int is_mgt = (ftype == IEEE80211_FTYPE_MGMT) != 0;
 761         int is_multicast = is_multicast_ether_addr(hdr->addr1);
 762         int short_preamble = ieee80211softmac_short_preamble_ok(softmac,
 763                 is_multicast, is_mgt);
 764         int flags = 0;
 765
 766         /* FIXME: 802.11a? */
 767         rate = ieee80211softmac_suggest_txrate(softmac, is_multicast, is_mgt);
 768
 769         if (short_preamble)
 770                 flags |= R2M_SHORT_PREAMBLE;
 771
 772         zd_rate = rate_to_zd_rate(rate);
 773         cs->modulation = zd_rate_to_modulation(zd_rate, flags);
 774 }
 775
 776 static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
 777                            struct ieee80211_hdr_4addr *header)
 778 {
 779         struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev);
 780         unsigned int tx_length = le16_to_cpu(cs->tx_length);
 781         u16 fctl = le16_to_cpu(header->frame_ctl);
 782         u16 ftype = WLAN_FC_GET_TYPE(fctl);
 783         u16 stype = WLAN_FC_GET_STYPE(fctl);
 784
 785         /*
 786          * CONTROL TODO:
 787          * - if backoff needed, enable bit 0
 788          * - if burst (backoff not needed) disable bit 0
 789          */
 790
 791         cs->control = 0;
 792
 793         /* First fragment */
 794         if (WLAN_GET_SEQ_FRAG(le16_to_cpu(header->seq_ctl)) == 0)
 795                 cs->control |= ZD_CS_NEED_RANDOM_BACKOFF;
 796
 797         /* Multicast */
 798         if (is_multicast_ether_addr(header->addr1))
 799                 cs->control |= ZD_CS_MULTICAST;
 800
 801         /* PS-POLL */
 802         if (stype == IEEE80211_STYPE_PSPOLL)
 803                 cs->control |= ZD_CS_PS_POLL_FRAME;
 804
 805         /* Unicast data frames over the threshold should have RTS */
 806         if (!is_multicast_ether_addr(header->addr1) &&
 807                 ftype != IEEE80211_FTYPE_MGMT &&
 808                     tx_length > zd_netdev_ieee80211(mac->netdev)->rts)
 809                 cs->control |= ZD_CS_RTS;
 810
 811         /* Use CTS-to-self protection if required */
 812         if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM &&
 813                         ieee80211softmac_protection_needed(softmac)) {
 814                 /* FIXME: avoid sending RTS *and* self-CTS, is that correct? */
 815                 cs->control &= ~ZD_CS_RTS;
 816                 cs->control |= ZD_CS_SELF_CTS;
 817         }
 818
 819         /* FIXME: Management frame? */
 820 }
 821
 822 static int fill_ctrlset(struct zd_mac *mac,
 823                         struct ieee80211_txb *txb,
 824                         int frag_num)
 825 {
 826         int r;
 827         struct sk_buff *skb = txb->fragments[frag_num];
 828         struct ieee80211_hdr_4addr *hdr =
 829                 (struct ieee80211_hdr_4addr *) skb->data;
 830         unsigned int frag_len = skb->len + IEEE80211_FCS_LEN;
 831         unsigned int next_frag_len;
 832         unsigned int packet_length;
 833         struct zd_ctrlset *cs = (struct zd_ctrlset *)
 834                 skb_push(skb, sizeof(struct zd_ctrlset));
 835
 836         if (frag_num+1  < txb->nr_frags) {
 837                 next_frag_len = txb->fragments[frag_num+1]->len +
 838                                 IEEE80211_FCS_LEN;
 839         } else {
 840                 next_frag_len = 0;
 841         }
 842         ZD_ASSERT(frag_len <= 0xffff);
 843         ZD_ASSERT(next_frag_len <= 0xffff);
 844
 845         cs_set_modulation(mac, cs, hdr);
 846
 847         cs->tx_length = cpu_to_le16(frag_len);
 848
 849         cs_set_control(mac, cs, hdr);
 850
 851         packet_length = frag_len + sizeof(struct zd_ctrlset) + 10;
 852         ZD_ASSERT(packet_length <= 0xffff);
 853         /* ZD1211B: Computing the length difference this way, gives us
 854          * flexibility to compute the packet length.
 855          */
 856         cs->packet_length = cpu_to_le16(mac->chip.is_zd1211b ?
 857                         packet_length - frag_len : packet_length);
 858
 859         /*
 860          * CURRENT LENGTH:
 861          * - transmit frame length in microseconds
 862          * - seems to be derived from frame length
 863          * - see Cal_Us_Service() in zdinlinef.h
 864          * - if macp->bTxBurstEnable is enabled, then multiply by 4
 865          *  - bTxBurstEnable is never set in the vendor driver
 866          *
 867          * SERVICE:
 868          * - "for PLCP configuration"
 869          * - always 0 except in some situations at 802.11b 11M
 870          * - see line 53 of zdinlinef.h
 871          */
 872         cs->service = 0;
 873         r = zd_calc_tx_length_us(&cs->service, ZD_CS_RATE(cs->modulation),
 874                                  le16_to_cpu(cs->tx_length));
 875         if (r < 0)
 876                 return r;
 877         cs->current_length = cpu_to_le16(r);
 878
 879         if (next_frag_len == 0) {
 880                 cs->next_frame_length = 0;
 881         } else {
 882                 r = zd_calc_tx_length_us(NULL, ZD_CS_RATE(cs->modulation),
 883                                          next_frag_len);
 884                 if (r < 0)
 885                         return r;
 886                 cs->next_frame_length = cpu_to_le16(r);
 887         }
 888
 889         return 0;
 890 }
 891
 892 static int zd_mac_tx(struct zd_mac *mac, struct ieee80211_txb *txb, int pri)
 893 {
 894         int i, r;
 895
 896         for (i = 0; i < txb->nr_frags; i++) {
 897                 struct sk_buff *skb = txb->fragments[i];
 898
 899                 r = fill_ctrlset(mac, txb, i);
 900                 if (r)
 901                         return r;
 902                 r = zd_usb_tx(&mac->chip.usb, skb->data, skb->len);
 903                 if (r)
 904                         return r;
 905         }
 906
 907         /* FIXME: shouldn't this be handled by the upper layers? */
 908         mac->netdev->trans_start = jiffies;
 909
 910         ieee80211_txb_free(txb);
 911         return 0;
 912 }
 913
 914 struct zd_rt_hdr {
 915         struct ieee80211_radiotap_header rt_hdr;
 916         u8  rt_flags;
 917         u8  rt_rate;
 918         u16 rt_channel;
 919         u16 rt_chbitmask;
 920 } __attribute__((packed));
 921
 922 static void fill_rt_header(void *buffer, struct zd_mac *mac,
 923                            const struct ieee80211_rx_stats *stats,
 924                            const struct rx_status *status)
 925 {
 926         struct zd_rt_hdr *hdr = buffer;
 927
 928         hdr->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 929         hdr->rt_hdr.it_pad = 0;
 930         hdr->rt_hdr.it_len = cpu_to_le16(sizeof(struct zd_rt_hdr));
 931         hdr->rt_hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 932                                  (1 << IEEE80211_RADIOTAP_CHANNEL) |
 933                                  (1 << IEEE80211_RADIOTAP_RATE));
 934
 935         hdr->rt_flags = 0;
 936         if (status->decryption_type & (ZD_RX_WEP64|ZD_RX_WEP128|ZD_RX_WEP256))
 937                 hdr->rt_flags |= IEEE80211_RADIOTAP_F_WEP;
 938
 939         hdr->rt_rate = stats->rate / 5;
 940
 941         /* FIXME: 802.11a */
 942         hdr->rt_channel = cpu_to_le16(ieee80211chan2mhz(
 943                                              _zd_chip_get_channel(&mac->chip)));
 944         hdr->rt_chbitmask = cpu_to_le16(IEEE80211_CHAN_2GHZ |
 945                 ((status->frame_status & ZD_RX_FRAME_MODULATION_MASK) ==
 946                 ZD_RX_OFDM ? IEEE80211_CHAN_OFDM : IEEE80211_CHAN_CCK));
 947 }
 948
 949 /* Returns 1 if the data packet is for us and 0 otherwise. */
 950 static int is_data_packet_for_us(struct ieee80211_device *ieee,
 951                                  struct ieee80211_hdr_4addr *hdr)
 952 {
 953         struct net_device *netdev = ieee->dev;
 954         u16 fc = le16_to_cpu(hdr->frame_ctl);
 955
 956         ZD_ASSERT(WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA);
 957
 958         switch (ieee->iw_mode) {
 959         case IW_MODE_ADHOC:
 960                 if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != 0 ||
 961                     memcmp(hdr->addr3, ieee->bssid, ETH_ALEN) != 0)
 962                         return 0;
 963                 break;
 964         case IW_MODE_AUTO:
 965         case IW_MODE_INFRA:
 966                 if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) !=
 967                     IEEE80211_FCTL_FROMDS ||
 968                     memcmp(hdr->addr2, ieee->bssid, ETH_ALEN) != 0)
 969                         return 0;
 970                 break;
 971         default:
 972                 ZD_ASSERT(ieee->iw_mode != IW_MODE_MONITOR);
 973                 return 0;
 974         }
 975
 976         return memcmp(hdr->addr1, netdev->dev_addr, ETH_ALEN) == 0 ||
 977                (is_multicast_ether_addr(hdr->addr1) &&
 978                 memcmp(hdr->addr3, netdev->dev_addr, ETH_ALEN) != 0) ||
 979                (netdev->flags & IFF_PROMISC);
 980 }
 981
 982 /* Filters received packets. The function returns 1 if the packet should be
 983  * forwarded to ieee80211_rx(). If the packet should be ignored the function
 984  * returns 0. If an invalid packet is found the function returns -EINVAL.
 985  *
 986  * The function calls ieee80211_rx_mgt() directly.
 987  *
 988  * It has been based on ieee80211_rx_any.
 989  */
 990 static int filter_rx(struct ieee80211_device *ieee,
 991                      const u8 *buffer, unsigned int length,
 992                      struct ieee80211_rx_stats *stats)
 993 {
 994         struct ieee80211_hdr_4addr *hdr;
 995         u16 fc;
 996
 997         if (ieee->iw_mode == IW_MODE_MONITOR)
 998                 return 1;
 999
1000         hdr = (struct ieee80211_hdr_4addr *)buffer;
1001         fc = le16_to_cpu(hdr->frame_ctl);
1002         if ((fc & IEEE80211_FCTL_VERS) != 0)
1003                 return -EINVAL;
1004
1005         switch (WLAN_FC_GET_TYPE(fc)) {
1006         case IEEE80211_FTYPE_MGMT:
1007                 if (length < sizeof(struct ieee80211_hdr_3addr))
1008                         return -EINVAL;
1009                 ieee80211_rx_mgt(ieee, hdr, stats);
1010                 return 0;
1011         case IEEE80211_FTYPE_CTL:
1012                 return 0;
1013         case IEEE80211_FTYPE_DATA:
1014                 /* Ignore invalid short buffers */
1015                 if (length < sizeof(struct ieee80211_hdr_3addr))
1016                         return -EINVAL;
1017                 return is_data_packet_for_us(ieee, hdr);
1018         }
1019
1020         return -EINVAL;
1021 }
1022
1023 static void update_qual_rssi(struct zd_mac *mac,
1024                              const u8 *buffer, unsigned int length,
1025                              u8 qual_percent, u8 rssi_percent)
1026 {
1027         unsigned long flags;
1028         struct ieee80211_hdr_3addr *hdr;
1029         int i;
1030
1031         hdr = (struct ieee80211_hdr_3addr *)buffer;
1032         if (length < offsetof(struct ieee80211_hdr_3addr, addr3))
1033                 return;
1034         if (memcmp(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid, ETH_ALEN) != 0)
1035                 return;
1036
1037         spin_lock_irqsave(&mac->lock, flags);
1038         i = mac->stats_count % ZD_MAC_STATS_BUFFER_SIZE;
1039         mac->qual_buffer[i] = qual_percent;
1040         mac->rssi_buffer[i] = rssi_percent;
1041         mac->stats_count++;
1042         spin_unlock_irqrestore(&mac->lock, flags);
1043 }
1044
1045 static int fill_rx_stats(struct ieee80211_rx_stats *stats,
1046                          const struct rx_status **pstatus,
1047                          struct zd_mac *mac,
1048                          const u8 *buffer, unsigned int length)
1049 {
1050         const struct rx_status *status;
1051
1052         *pstatus = status = zd_tail(buffer, length, sizeof(struct rx_status));
1053         if (status->frame_status & ZD_RX_ERROR) {
1054                 /* FIXME: update? */
1055                 return -EINVAL;
1056         }
1057         memset(stats, 0, sizeof(struct ieee80211_rx_stats));
1058         stats->len = length - (ZD_PLCP_HEADER_SIZE + IEEE80211_FCS_LEN +
1059                                + sizeof(struct rx_status));
1060         /* FIXME: 802.11a */
1061         stats->freq = IEEE80211_24GHZ_BAND;
1062         stats->received_channel = _zd_chip_get_channel(&mac->chip);
1063         stats->rssi = zd_rx_strength_percent(status->signal_strength);
1064         stats->signal = zd_rx_qual_percent(buffer,
1065                                           length - sizeof(struct rx_status),
1066                                           status);
1067         stats->mask = IEEE80211_STATMASK_RSSI | IEEE80211_STATMASK_SIGNAL;
1068         stats->rate = zd_rx_rate(buffer, status);
1069         if (stats->rate)
1070                 stats->mask |= IEEE80211_STATMASK_RATE;
1071
1072         return 0;
1073 }
1074
1075 int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length)
1076 {
1077         int r;
1078         struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
1079         struct ieee80211_rx_stats stats;
1080         const struct rx_status *status;
1081         struct sk_buff *skb;
1082
1083         if (length < ZD_PLCP_HEADER_SIZE + IEEE80211_1ADDR_LEN +
1084                      IEEE80211_FCS_LEN + sizeof(struct rx_status))
1085                 return -EINVAL;
1086
1087         r = fill_rx_stats(&stats, &status, mac, buffer, length);
1088         if (r)
1089                 return r;
1090
1091         length -= ZD_PLCP_HEADER_SIZE+IEEE80211_FCS_LEN+
1092                   sizeof(struct rx_status);
1093         buffer += ZD_PLCP_HEADER_SIZE;
1094
1095         update_qual_rssi(mac, buffer, length, stats.signal, stats.rssi);
1096
1097         r = filter_rx(ieee, buffer, length, &stats);
1098         if (r <= 0)
1099                 return r;
1100
1101         skb = dev_alloc_skb(sizeof(struct zd_rt_hdr) + length);
1102         if (!skb)
1103                 return -ENOMEM;
1104         if (ieee->iw_mode == IW_MODE_MONITOR)
1105                 fill_rt_header(skb_put(skb, sizeof(struct zd_rt_hdr)), mac,
1106                                &stats, status);
1107         memcpy(skb_put(skb, length), buffer, length);
1108
1109         r = ieee80211_rx(ieee, skb, &stats);
1110         if (!r)
1111                 dev_kfree_skb_any(skb);
1112         return 0;
1113 }
1114
1115 static int netdev_tx(struct ieee80211_txb *txb, struct net_device *netdev,
1116                      int pri)
1117 {
1118         return zd_mac_tx(zd_netdev_mac(netdev), txb, pri);
1119 }
1120
1121 static void set_security(struct net_device *netdev,
1122                          struct ieee80211_security *sec)
1123 {
1124         struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev);
1125         struct ieee80211_security *secinfo = &ieee->sec;
1126         int keyidx;
1127
1128         dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), "\n");
1129
1130         for (keyidx = 0; keyidx<WEP_KEYS; keyidx++)
1131                 if (sec->flags & (1<<keyidx)) {
1132                         secinfo->encode_alg[keyidx] = sec->encode_alg[keyidx];
1133                         secinfo->key_sizes[keyidx] = sec->key_sizes[keyidx];
1134                         memcpy(secinfo->keys[keyidx], sec->keys[keyidx],
1135                                SCM_KEY_LEN);
1136                 }
1137
1138         if (sec->flags & SEC_ACTIVE_KEY) {
1139                 secinfo->active_key = sec->active_key;
1140                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1141                         "   .active_key = %d\n", sec->active_key);
1142         }
1143         if (sec->flags & SEC_UNICAST_GROUP) {
1144                 secinfo->unicast_uses_group = sec->unicast_uses_group;
1145                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1146                         "   .unicast_uses_group = %d\n",
1147                         sec->unicast_uses_group);
1148         }
1149         if (sec->flags & SEC_LEVEL) {
1150                 secinfo->level = sec->level;
1151                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1152                         "   .level = %d\n", sec->level);
1153         }
1154         if (sec->flags & SEC_ENABLED) {
1155                 secinfo->enabled = sec->enabled;
1156                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1157                         "   .enabled = %d\n", sec->enabled);
1158         }
1159         if (sec->flags & SEC_ENCRYPT) {
1160                 secinfo->encrypt = sec->encrypt;
1161                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1162                         "   .encrypt = %d\n", sec->encrypt);
1163         }
1164         if (sec->flags & SEC_AUTH_MODE) {
1165                 secinfo->auth_mode = sec->auth_mode;
1166                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1167                         "   .auth_mode = %d\n", sec->auth_mode);
1168         }
1169 }
1170
1171 static void ieee_init(struct ieee80211_device *ieee)
1172 {
1173         ieee->mode = IEEE_B | IEEE_G;
1174         ieee->freq_band = IEEE80211_24GHZ_BAND;
1175         ieee->modulation = IEEE80211_OFDM_MODULATION | IEEE80211_CCK_MODULATION;
1176         ieee->tx_headroom = sizeof(struct zd_ctrlset);
1177         ieee->set_security = set_security;
1178         ieee->hard_start_xmit = netdev_tx;
1179
1180         /* Software encryption/decryption for now */
1181         ieee->host_build_iv = 0;
1182         ieee->host_encrypt = 1;
1183         ieee->host_decrypt = 1;
1184
1185         /* FIXME: default to managed mode, until ieee80211 and zd1211rw can
1186          * correctly support AUTO */
1187         ieee->iw_mode = IW_MODE_INFRA;
1188 }
1189
1190 static void softmac_init(struct ieee80211softmac_device *sm)
1191 {
1192         sm->set_channel = set_channel;
1193         sm->bssinfo_change = bssinfo_change;
1194 }
1195
1196 struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev)
1197 {
1198         struct zd_mac *mac = zd_netdev_mac(ndev);
1199         struct iw_statistics *iw_stats = &mac->iw_stats;
1200         unsigned int i, count, qual_total, rssi_total;
1201
1202         memset(iw_stats, 0, sizeof(struct iw_statistics));
1203         /* We are not setting the status, because ieee->state is not updated
1204          * at all and this driver doesn't track authentication state.
1205          */
1206         spin_lock_irq(&mac->lock);
1207         count = mac->stats_count < ZD_MAC_STATS_BUFFER_SIZE ?
1208                 mac->stats_count : ZD_MAC_STATS_BUFFER_SIZE;
1209         qual_total = rssi_total = 0;
1210         for (i = 0; i < count; i++) {
1211                 qual_total += mac->qual_buffer[i];
1212                 rssi_total += mac->rssi_buffer[i];
1213         }
1214         spin_unlock_irq(&mac->lock);
1215         iw_stats->qual.updated = IW_QUAL_NOISE_INVALID;
1216         if (count > 0) {
1217                 iw_stats->qual.qual = qual_total / count;
1218                 iw_stats->qual.level = rssi_total / count;
1219                 iw_stats->qual.updated |=
1220                         IW_QUAL_QUAL_UPDATED|IW_QUAL_LEVEL_UPDATED;
1221         } else {
1222                 iw_stats->qual.updated |=
1223                         IW_QUAL_QUAL_INVALID|IW_QUAL_LEVEL_INVALID;
1224         }
1225         /* TODO: update counter */
1226         return iw_stats;
1227 }
1228
1229 #define LINK_LED_WORK_DELAY HZ
1230
1231 static void link_led_handler(struct work_struct *work)
1232 {
1233         struct zd_mac *mac =
1234                 container_of(work, struct zd_mac, housekeeping.link_led_work.work);
1235         struct zd_chip *chip = &mac->chip;
1236         struct ieee80211softmac_device *sm = ieee80211_priv(mac->netdev);
1237         int is_associated;
1238         int r;
1239
1240         spin_lock_irq(&mac->lock);
1241         is_associated = sm->associnfo.associated != 0;
1242         spin_unlock_irq(&mac->lock);
1243
1244         r = zd_chip_control_leds(chip,
1245                                  is_associated ? LED_ASSOCIATED : LED_SCANNING);
1246         if (r)
1247                 dev_err(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r);
1248
1249         queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work,
1250                            LINK_LED_WORK_DELAY);
1251 }
1252
1253 static void housekeeping_init(struct zd_mac *mac)
1254 {
1255         INIT_DELAYED_WORK(&mac->housekeeping.link_led_work, link_led_handler);
1256 }
1257
1258 static void housekeeping_enable(struct zd_mac *mac)
1259 {
1260         dev_dbg_f(zd_mac_dev(mac), "\n");
1261         queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work,
1262                            0);
1263 }
1264
1265 static void housekeeping_disable(struct zd_mac *mac)
1266 {
1267         dev_dbg_f(zd_mac_dev(mac), "\n");
1268         cancel_rearming_delayed_workqueue(zd_workqueue,
1269                 &mac->housekeeping.link_led_work);
1270         zd_chip_control_leds(&mac->chip, LED_OFF);
1271 }