SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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(void *d);
  36 static void set_basic_rates_work(void *d);
  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(void *mac_ptr);
  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_WORK(&mac->set_rts_cts_work, set_rts_cts_work, mac);
  54         INIT_WORK(&mac->set_basic_rates_work, set_basic_rates_work, mac);
  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                   mac);
  62         return 0;
  63 }
  64
  65 static int reset_channel(struct zd_mac *mac)
  66 {
  67         int r;
  68         unsigned long flags;
  69         const struct channel_range *range;
  70
  71         spin_lock_irqsave(&mac->lock, flags);
  72         range = zd_channel_range(mac->regdomain);
  73         if (!range->start) {
  74                 r = -EINVAL;
  75                 goto out;
  76         }
  77         mac->requested_channel = range->start;
  78         r = 0;
  79 out:
  80         spin_unlock_irqrestore(&mac->lock, flags);
  81         return r;
  82 }
  83
  84 int zd_mac_init_hw(struct zd_mac *mac, u8 device_type)
  85 {
  86         int r;
  87         struct zd_chip *chip = &mac->chip;
  88         u8 addr[ETH_ALEN];
  89         u8 default_regdomain;
  90
  91         r = zd_chip_enable_int(chip);
  92         if (r)
  93                 goto out;
  94         r = zd_chip_init_hw(chip, device_type);
  95         if (r)
  96                 goto disable_int;
  97
  98         zd_get_e2p_mac_addr(chip, addr);
  99         r = zd_write_mac_addr(chip, addr);
 100         if (r)
 101                 goto disable_int;
 102         ZD_ASSERT(!irqs_disabled());
 103         spin_lock_irq(&mac->lock);
 104         memcpy(mac->netdev->dev_addr, addr, ETH_ALEN);
 105         spin_unlock_irq(&mac->lock);
 106
 107         r = zd_read_regdomain(chip, &default_regdomain);
 108         if (r)
 109                 goto disable_int;
 110         if (!zd_regdomain_supported(default_regdomain)) {
 111                 dev_dbg_f(zd_mac_dev(mac),
 112                           "Regulatory Domain %#04x is not supported.\n",
 113                           default_regdomain);
 114                 r = -EINVAL;
 115                 goto disable_int;
 116         }
 117         spin_lock_irq(&mac->lock);
 118         mac->regdomain = mac->default_regdomain = default_regdomain;
 119         spin_unlock_irq(&mac->lock);
 120         r = reset_channel(mac);
 121         if (r)
 122                 goto disable_int;
 123
 124         /* We must inform the device that we are doing encryption/decryption in
 125          * software at the moment. */
 126         r = zd_set_encryption_type(chip, ENC_SNIFFER);
 127         if (r)
 128                 goto disable_int;
 129
 130         r = zd_geo_init(zd_mac_to_ieee80211(mac), mac->regdomain);
 131         if (r)
 132                 goto disable_int;
 133
 134         r = 0;
 135 disable_int:
 136         zd_chip_disable_int(chip);
 137 out:
 138         return r;
 139 }
 140
 141 void zd_mac_clear(struct zd_mac *mac)
 142 {
 143         flush_workqueue(zd_workqueue);
 144         zd_chip_clear(&mac->chip);
 145         ZD_ASSERT(!spin_is_locked(&mac->lock));
 146         ZD_MEMCLEAR(mac, sizeof(struct zd_mac));
 147 }
 148
 149 static int reset_mode(struct zd_mac *mac)
 150 {
 151         struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
 152         struct zd_ioreq32 ioreqs[3] = {
 153                 { CR_RX_FILTER, STA_RX_FILTER },
 154                 { CR_SNIFFER_ON, 0U },
 155         };
 156
 157         if (ieee->iw_mode == IW_MODE_MONITOR) {
 158                 ioreqs[0].value = 0xffffffff;
 159                 ioreqs[1].value = 0x1;
 160                 ioreqs[2].value = ENC_SNIFFER;
 161         }
 162
 163         return zd_iowrite32a(&mac->chip, ioreqs, 3);
 164 }
 165
 166 int zd_mac_open(struct net_device *netdev)
 167 {
 168         struct zd_mac *mac = zd_netdev_mac(netdev);
 169         struct zd_chip *chip = &mac->chip;
 170         int r;
 171
 172         r = zd_chip_enable_int(chip);
 173         if (r < 0)
 174                 goto out;
 175
 176         r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G);
 177         if (r < 0)
 178                 goto disable_int;
 179         r = reset_mode(mac);
 180         if (r)
 181                 goto disable_int;
 182         r = zd_chip_switch_radio_on(chip);
 183         if (r < 0)
 184                 goto disable_int;
 185         r = zd_chip_set_channel(chip, mac->requested_channel);
 186         if (r < 0)
 187                 goto disable_radio;
 188         r = zd_chip_enable_rx(chip);
 189         if (r < 0)
 190                 goto disable_radio;
 191         r = zd_chip_enable_hwint(chip);
 192         if (r < 0)
 193                 goto disable_rx;
 194
 195         housekeeping_enable(mac);
 196         ieee80211softmac_start(netdev);
 197         return 0;
 198 disable_rx:
 199         zd_chip_disable_rx(chip);
 200 disable_radio:
 201         zd_chip_switch_radio_off(chip);
 202 disable_int:
 203         zd_chip_disable_int(chip);
 204 out:
 205         return r;
 206 }
 207
 208 int zd_mac_stop(struct net_device *netdev)
 209 {
 210         struct zd_mac *mac = zd_netdev_mac(netdev);
 211         struct zd_chip *chip = &mac->chip;
 212
 213         netif_stop_queue(netdev);
 214
 215         /*
 216          * The order here deliberately is a little different from the open()
 217          * method, since we need to make sure there is no opportunity for RX
 218          * frames to be processed by softmac after we have stopped it.
 219          */
 220
 221         zd_chip_disable_rx(chip);
 222         housekeeping_disable(mac);
 223         ieee80211softmac_stop(netdev);
 224
 225         /* Ensure no work items are running or queued from this point */
 226         cancel_delayed_work(&mac->set_rts_cts_work);
 227         cancel_delayed_work(&mac->set_basic_rates_work);
 228         flush_workqueue(zd_workqueue);
 229         mac->updating_rts_rate = 0;
 230         mac->updating_basic_rates = 0;
 231
 232         zd_chip_disable_hwint(chip);
 233         zd_chip_switch_radio_off(chip);
 234         zd_chip_disable_int(chip);
 235
 236         return 0;
 237 }
 238
 239 int zd_mac_set_mac_address(struct net_device *netdev, void *p)
 240 {
 241         int r;
 242         unsigned long flags;
 243         struct sockaddr *addr = p;
 244         struct zd_mac *mac = zd_netdev_mac(netdev);
 245         struct zd_chip *chip = &mac->chip;
 246
 247         if (!is_valid_ether_addr(addr->sa_data))
 248                 return -EADDRNOTAVAIL;
 249
 250         dev_dbg_f(zd_mac_dev(mac),
 251                   "Setting MAC to " MAC_FMT "\n", MAC_ARG(addr->sa_data));
 252
 253         r = zd_write_mac_addr(chip, addr->sa_data);
 254         if (r)
 255                 return r;
 256
 257         spin_lock_irqsave(&mac->lock, flags);
 258         memcpy(netdev->dev_addr, addr->sa_data, ETH_ALEN);
 259         spin_unlock_irqrestore(&mac->lock, flags);
 260
 261         return 0;
 262 }
 263
 264 static void set_multicast_hash_handler(void *mac_ptr)
 265 {
 266         struct zd_mac *mac = mac_ptr;
 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(void *d)
 411 {
 412         struct zd_mac *mac = d;
 413         unsigned long flags;
 414         u8 rts_rate;
 415         unsigned int short_preamble;
 416
 417         mutex_lock(&mac->chip.mutex);
 418
 419         spin_lock_irqsave(&mac->lock, flags);
 420         mac->updating_rts_rate = 0;
 421         rts_rate = mac->rts_rate;
 422         short_preamble = mac->short_preamble;
 423         spin_unlock_irqrestore(&mac->lock, flags);
 424
 425         zd_chip_set_rts_cts_rate_locked(&mac->chip, rts_rate, short_preamble);
 426         mutex_unlock(&mac->chip.mutex);
 427
 428         try_enable_tx(mac);
 429 }
 430
 431 static void set_basic_rates_work(void *d)
 432 {
 433         struct zd_mac *mac = d;
 434         unsigned long flags;
 435         u16 basic_rates;
 436
 437         mutex_lock(&mac->chip.mutex);
 438
 439         spin_lock_irqsave(&mac->lock, flags);
 440         mac->updating_basic_rates = 0;
 441         basic_rates = mac->basic_rates;
 442         spin_unlock_irqrestore(&mac->lock, flags);
 443
 444         zd_chip_set_basic_rates_locked(&mac->chip, basic_rates);
 445         mutex_unlock(&mac->chip.mutex);
 446
 447         try_enable_tx(mac);
 448 }
 449
 450 static void bssinfo_change(struct net_device *netdev, u32 changes)
 451 {
 452         struct zd_mac *mac = zd_netdev_mac(netdev);
 453         struct ieee80211softmac_device *softmac = ieee80211_priv(netdev);
 454         struct ieee80211softmac_bss_info *bssinfo = &softmac->bssinfo;
 455         int need_set_rts_cts = 0;
 456         int need_set_rates = 0;
 457         u16 basic_rates;
 458         unsigned long flags;
 459
 460         dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes);
 461
 462         if (changes & IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE) {
 463                 spin_lock_irqsave(&mac->lock, flags);
 464                 mac->short_preamble = bssinfo->short_preamble;
 465                 spin_unlock_irqrestore(&mac->lock, flags);
 466                 need_set_rts_cts = 1;
 467         }
 468
 469         if (changes & IEEE80211SOFTMAC_BSSINFOCHG_RATES) {
 470                 /* Set RTS rate to highest available basic rate */
 471                 u8 rate = ieee80211softmac_highest_supported_rate(softmac,
 472                         &bssinfo->supported_rates, 1);
 473                 rate = rate_to_zd_rate(rate);
 474
 475                 spin_lock_irqsave(&mac->lock, flags);
 476                 if (rate != mac->rts_rate) {
 477                         mac->rts_rate = rate;
 478                         need_set_rts_cts = 1;
 479                 }
 480                 spin_unlock_irqrestore(&mac->lock, flags);
 481
 482                 /* Set basic rates */
 483                 need_set_rates = 1;
 484                 if (bssinfo->supported_rates.count == 0) {
 485                         /* Allow the device to be flexible */
 486                         basic_rates = CR_RATES_80211B | CR_RATES_80211G;
 487                 } else {
 488                         int i = 0;
 489                         basic_rates = 0;
 490
 491                         for (i = 0; i < bssinfo->supported_rates.count; i++) {
 492                                 u16 rate = bssinfo->supported_rates.rates[i];
 493                                 if ((rate & IEEE80211_BASIC_RATE_MASK) == 0)
 494                                         continue;
 495
 496                                 rate &= ~IEEE80211_BASIC_RATE_MASK;
 497                                 basic_rates |= rate_to_cr_rate(rate);
 498                         }
 499                 }
 500                 spin_lock_irqsave(&mac->lock, flags);
 501                 mac->basic_rates = basic_rates;
 502                 spin_unlock_irqrestore(&mac->lock, flags);
 503         }
 504
 505         /* Schedule any changes we made above */
 506
 507         spin_lock_irqsave(&mac->lock, flags);
 508         if (need_set_rts_cts && !mac->updating_rts_rate) {
 509                 mac->updating_rts_rate = 1;
 510                 netif_stop_queue(mac->netdev);
 511                 queue_work(zd_workqueue, &mac->set_rts_cts_work);
 512         }
 513         if (need_set_rates && !mac->updating_basic_rates) {
 514                 mac->updating_basic_rates = 1;
 515                 netif_stop_queue(mac->netdev);
 516                 queue_work(zd_workqueue, &mac->set_basic_rates_work);
 517         }
 518         spin_unlock_irqrestore(&mac->lock, flags);
 519 }
 520
 521 static void set_channel(struct net_device *netdev, u8 channel)
 522 {
 523         struct zd_mac *mac = zd_netdev_mac(netdev);
 524
 525         dev_dbg_f(zd_mac_dev(mac), "channel %d\n", channel);
 526
 527         zd_chip_set_channel(&mac->chip, channel);
 528 }
 529
 530 int zd_mac_request_channel(struct zd_mac *mac, u8 channel)
 531 {
 532         unsigned long lock_flags;
 533         struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
 534
 535         if (ieee->iw_mode == IW_MODE_INFRA)
 536                 return -EPERM;
 537
 538         spin_lock_irqsave(&mac->lock, lock_flags);
 539         if (!zd_regdomain_supports_channel(mac->regdomain, channel)) {
 540                 spin_unlock_irqrestore(&mac->lock, lock_flags);
 541                 return -EINVAL;
 542         }
 543         mac->requested_channel = channel;
 544         spin_unlock_irqrestore(&mac->lock, lock_flags);
 545         if (netif_running(mac->netdev))
 546                 return zd_chip_set_channel(&mac->chip, channel);
 547         else
 548                 return 0;
 549 }
 550
 551 u8 zd_mac_get_channel(struct zd_mac *mac)
 552 {
 553         u8 channel = zd_chip_get_channel(&mac->chip);
 554
 555         dev_dbg_f(zd_mac_dev(mac), "channel %u\n", channel);
 556         return channel;
 557 }
 558
 559 /* If wrong rate is given, we are falling back to the slowest rate: 1MBit/s */
 560 static u8 zd_rate_typed(u8 zd_rate)
 561 {
 562         static const u8 typed_rates[16] = {
 563                 [ZD_CCK_RATE_1M]        = ZD_CS_CCK|ZD_CCK_RATE_1M,
 564                 [ZD_CCK_RATE_2M]        = ZD_CS_CCK|ZD_CCK_RATE_2M,
 565                 [ZD_CCK_RATE_5_5M]      = ZD_CS_CCK|ZD_CCK_RATE_5_5M,
 566                 [ZD_CCK_RATE_11M]       = ZD_CS_CCK|ZD_CCK_RATE_11M,
 567                 [ZD_OFDM_RATE_6M]       = ZD_CS_OFDM|ZD_OFDM_RATE_6M,
 568                 [ZD_OFDM_RATE_9M]       = ZD_CS_OFDM|ZD_OFDM_RATE_9M,
 569                 [ZD_OFDM_RATE_12M]      = ZD_CS_OFDM|ZD_OFDM_RATE_12M,
 570                 [ZD_OFDM_RATE_18M]      = ZD_CS_OFDM|ZD_OFDM_RATE_18M,
 571                 [ZD_OFDM_RATE_24M]      = ZD_CS_OFDM|ZD_OFDM_RATE_24M,
 572                 [ZD_OFDM_RATE_36M]      = ZD_CS_OFDM|ZD_OFDM_RATE_36M,
 573                 [ZD_OFDM_RATE_48M]      = ZD_CS_OFDM|ZD_OFDM_RATE_48M,
 574                 [ZD_OFDM_RATE_54M]      = ZD_CS_OFDM|ZD_OFDM_RATE_54M,
 575         };
 576
 577         ZD_ASSERT(ZD_CS_RATE_MASK == 0x0f);
 578         return typed_rates[zd_rate & ZD_CS_RATE_MASK];
 579 }
 580
 581 int zd_mac_set_mode(struct zd_mac *mac, u32 mode)
 582 {
 583         struct ieee80211_device *ieee;
 584
 585         switch (mode) {
 586         case IW_MODE_AUTO:
 587         case IW_MODE_ADHOC:
 588         case IW_MODE_INFRA:
 589                 mac->netdev->type = ARPHRD_ETHER;
 590                 break;
 591         case IW_MODE_MONITOR:
 592                 mac->netdev->type = ARPHRD_IEEE80211_RADIOTAP;
 593                 break;
 594         default:
 595                 dev_dbg_f(zd_mac_dev(mac), "wrong mode %u\n", mode);
 596                 return -EINVAL;
 597         }
 598
 599         ieee = zd_mac_to_ieee80211(mac);
 600         ZD_ASSERT(!irqs_disabled());
 601         spin_lock_irq(&ieee->lock);
 602         ieee->iw_mode = mode;
 603         spin_unlock_irq(&ieee->lock);
 604
 605         if (netif_running(mac->netdev))
 606                 return reset_mode(mac);
 607
 608         return 0;
 609 }
 610
 611 int zd_mac_get_mode(struct zd_mac *mac, u32 *mode)
 612 {
 613         unsigned long flags;
 614         struct ieee80211_device *ieee;
 615
 616         ieee = zd_mac_to_ieee80211(mac);
 617         spin_lock_irqsave(&ieee->lock, flags);
 618         *mode = ieee->iw_mode;
 619         spin_unlock_irqrestore(&ieee->lock, flags);
 620         return 0;
 621 }
 622
 623 int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range)
 624 {
 625         int i;
 626         const struct channel_range *channel_range;
 627         u8 regdomain;
 628
 629         memset(range, 0, sizeof(*range));
 630
 631         /* FIXME: Not so important and depends on the mode. For 802.11g
 632          * usually this value is used. It seems to be that Bit/s number is
 633          * given here.
 634          */
 635         range->throughput = 27 * 1000 * 1000;
 636
 637         range->max_qual.qual = 100;
 638         range->max_qual.level = 100;
 639
 640         /* FIXME: Needs still to be tuned. */
 641         range->avg_qual.qual = 71;
 642         range->avg_qual.level = 80;
 643
 644         /* FIXME: depends on standard? */
 645         range->min_rts = 256;
 646         range->max_rts = 2346;
 647
 648         range->min_frag = MIN_FRAG_THRESHOLD;
 649         range->max_frag = MAX_FRAG_THRESHOLD;
 650
 651         range->max_encoding_tokens = WEP_KEYS;
 652         range->num_encoding_sizes = 2;
 653         range->encoding_size[0] = 5;
 654         range->encoding_size[1] = WEP_KEY_LEN;
 655
 656         range->we_version_compiled = WIRELESS_EXT;
 657         range->we_version_source = 20;
 658
 659         range->enc_capa = IW_ENC_CAPA_WPA |  IW_ENC_CAPA_WPA2 |
 660                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 661
 662         ZD_ASSERT(!irqs_disabled());
 663         spin_lock_irq(&mac->lock);
 664         regdomain = mac->regdomain;
 665         spin_unlock_irq(&mac->lock);
 666         channel_range = zd_channel_range(regdomain);
 667
 668         range->num_channels = channel_range->end - channel_range->start;
 669         range->old_num_channels = range->num_channels;
 670         range->num_frequency = range->num_channels;
 671         range->old_num_frequency = range->num_frequency;
 672
 673         for (i = 0; i < range->num_frequency; i++) {
 674                 struct iw_freq *freq = &range->freq[i];
 675                 freq->i = channel_range->start + i;
 676                 zd_channel_to_freq(freq, freq->i);
 677         }
 678
 679         return 0;
 680 }
 681
 682 static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length)
 683 {
 684         static const u8 rate_divisor[] = {
 685                 [ZD_CCK_RATE_1M]        =  1,
 686                 [ZD_CCK_RATE_2M]        =  2,
 687                 [ZD_CCK_RATE_5_5M]      = 11, /* bits must be doubled */
 688                 [ZD_CCK_RATE_11M]       = 11,
 689                 [ZD_OFDM_RATE_6M]       =  6,
 690                 [ZD_OFDM_RATE_9M]       =  9,
 691                 [ZD_OFDM_RATE_12M]      = 12,
 692                 [ZD_OFDM_RATE_18M]      = 18,
 693                 [ZD_OFDM_RATE_24M]      = 24,
 694                 [ZD_OFDM_RATE_36M]      = 36,
 695                 [ZD_OFDM_RATE_48M]      = 48,
 696                 [ZD_OFDM_RATE_54M]      = 54,
 697         };
 698
 699         u32 bits = (u32)tx_length * 8;
 700         u32 divisor;
 701
 702         divisor = rate_divisor[zd_rate];
 703         if (divisor == 0)
 704                 return -EINVAL;
 705
 706         switch (zd_rate) {
 707         case ZD_CCK_RATE_5_5M:
 708                 bits = (2*bits) + 10; /* round up to the next integer */
 709                 break;
 710         case ZD_CCK_RATE_11M:
 711                 if (service) {
 712                         u32 t = bits % 11;
 713                         *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION;
 714                         if (0 < t && t <= 3) {
 715                                 *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION;
 716                         }
 717                 }
 718                 bits += 10; /* round up to the next integer */
 719                 break;
 720         }
 721
 722         return bits/divisor;
 723 }
 724
 725 enum {
 726         R2M_SHORT_PREAMBLE = 0x01,
 727         R2M_11A            = 0x02,
 728 };
 729
 730 static u8 zd_rate_to_modulation(u8 zd_rate, int flags)
 731 {
 732         u8 modulation;
 733
 734         modulation = zd_rate_typed(zd_rate);
 735         if (flags & R2M_SHORT_PREAMBLE) {
 736                 switch (ZD_CS_RATE(modulation)) {
 737                 case ZD_CCK_RATE_2M:
 738                 case ZD_CCK_RATE_5_5M:
 739                 case ZD_CCK_RATE_11M:
 740                         modulation |= ZD_CS_CCK_PREA_SHORT;
 741                         return modulation;
 742                 }
 743         }
 744         if (flags & R2M_11A) {
 745                 if (ZD_CS_TYPE(modulation) == ZD_CS_OFDM)
 746                         modulation |= ZD_CS_OFDM_MODE_11A;
 747         }
 748         return modulation;
 749 }
 750
 751 static void cs_set_modulation(struct zd_mac *mac, struct zd_ctrlset *cs,
 752                               struct ieee80211_hdr_4addr *hdr)
 753 {
 754         struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev);
 755         u16 ftype = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_ctl));
 756         u8 rate, zd_rate;
 757         int is_mgt = (ftype == IEEE80211_FTYPE_MGMT) != 0;
 758         int is_multicast = is_multicast_ether_addr(hdr->addr1);
 759         int short_preamble = ieee80211softmac_short_preamble_ok(softmac,
 760                 is_multicast, is_mgt);
 761         int flags = 0;
 762
 763         /* FIXME: 802.11a? */
 764         rate = ieee80211softmac_suggest_txrate(softmac, is_multicast, is_mgt);
 765
 766         if (short_preamble)
 767                 flags |= R2M_SHORT_PREAMBLE;
 768
 769         zd_rate = rate_to_zd_rate(rate);
 770         cs->modulation = zd_rate_to_modulation(zd_rate, flags);
 771 }
 772
 773 static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
 774                            struct ieee80211_hdr_4addr *header)
 775 {
 776         struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev);
 777         unsigned int tx_length = le16_to_cpu(cs->tx_length);
 778         u16 fctl = le16_to_cpu(header->frame_ctl);
 779         u16 ftype = WLAN_FC_GET_TYPE(fctl);
 780         u16 stype = WLAN_FC_GET_STYPE(fctl);
 781
 782         /*
 783          * CONTROL TODO:
 784          * - if backoff needed, enable bit 0
 785          * - if burst (backoff not needed) disable bit 0
 786          */
 787
 788         cs->control = 0;
 789
 790         /* First fragment */
 791         if (WLAN_GET_SEQ_FRAG(le16_to_cpu(header->seq_ctl)) == 0)
 792                 cs->control |= ZD_CS_NEED_RANDOM_BACKOFF;
 793
 794         /* Multicast */
 795         if (is_multicast_ether_addr(header->addr1))
 796                 cs->control |= ZD_CS_MULTICAST;
 797
 798         /* PS-POLL */
 799         if (stype == IEEE80211_STYPE_PSPOLL)
 800                 cs->control |= ZD_CS_PS_POLL_FRAME;
 801
 802         /* Unicast data frames over the threshold should have RTS */
 803         if (!is_multicast_ether_addr(header->addr1) &&
 804                 ftype != IEEE80211_FTYPE_MGMT &&
 805                     tx_length > zd_netdev_ieee80211(mac->netdev)->rts)
 806                 cs->control |= ZD_CS_RTS;
 807
 808         /* Use CTS-to-self protection if required */
 809         if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM &&
 810                         ieee80211softmac_protection_needed(softmac)) {
 811                 /* FIXME: avoid sending RTS *and* self-CTS, is that correct? */
 812                 cs->control &= ~ZD_CS_RTS;
 813                 cs->control |= ZD_CS_SELF_CTS;
 814         }
 815
 816         /* FIXME: Management frame? */
 817 }
 818
 819 static int fill_ctrlset(struct zd_mac *mac,
 820                         struct ieee80211_txb *txb,
 821                         int frag_num)
 822 {
 823         int r;
 824         struct sk_buff *skb = txb->fragments[frag_num];
 825         struct ieee80211_hdr_4addr *hdr =
 826                 (struct ieee80211_hdr_4addr *) skb->data;
 827         unsigned int frag_len = skb->len + IEEE80211_FCS_LEN;
 828         unsigned int next_frag_len;
 829         unsigned int packet_length;
 830         struct zd_ctrlset *cs = (struct zd_ctrlset *)
 831                 skb_push(skb, sizeof(struct zd_ctrlset));
 832
 833         if (frag_num+1  < txb->nr_frags) {
 834                 next_frag_len = txb->fragments[frag_num+1]->len +
 835                                 IEEE80211_FCS_LEN;
 836         } else {
 837                 next_frag_len = 0;
 838         }
 839         ZD_ASSERT(frag_len <= 0xffff);
 840         ZD_ASSERT(next_frag_len <= 0xffff);
 841
 842         cs_set_modulation(mac, cs, hdr);
 843
 844         cs->tx_length = cpu_to_le16(frag_len);
 845
 846         cs_set_control(mac, cs, hdr);
 847
 848         packet_length = frag_len + sizeof(struct zd_ctrlset) + 10;
 849         ZD_ASSERT(packet_length <= 0xffff);
 850         /* ZD1211B: Computing the length difference this way, gives us
 851          * flexibility to compute the packet length.
 852          */
 853         cs->packet_length = cpu_to_le16(mac->chip.is_zd1211b ?
 854                         packet_length - frag_len : packet_length);
 855
 856         /*
 857          * CURRENT LENGTH:
 858          * - transmit frame length in microseconds
 859          * - seems to be derived from frame length
 860          * - see Cal_Us_Service() in zdinlinef.h
 861          * - if macp->bTxBurstEnable is enabled, then multiply by 4
 862          *  - bTxBurstEnable is never set in the vendor driver
 863          *
 864          * SERVICE:
 865          * - "for PLCP configuration"
 866          * - always 0 except in some situations at 802.11b 11M
 867          * - see line 53 of zdinlinef.h
 868          */
 869         cs->service = 0;
 870         r = zd_calc_tx_length_us(&cs->service, ZD_CS_RATE(cs->modulation),
 871                                  le16_to_cpu(cs->tx_length));
 872         if (r < 0)
 873                 return r;
 874         cs->current_length = cpu_to_le16(r);
 875
 876         if (next_frag_len == 0) {
 877                 cs->next_frame_length = 0;
 878         } else {
 879                 r = zd_calc_tx_length_us(NULL, ZD_CS_RATE(cs->modulation),
 880                                          next_frag_len);
 881                 if (r < 0)
 882                         return r;
 883                 cs->next_frame_length = cpu_to_le16(r);
 884         }
 885
 886         return 0;
 887 }
 888
 889 static int zd_mac_tx(struct zd_mac *mac, struct ieee80211_txb *txb, int pri)
 890 {
 891         int i, r;
 892
 893         for (i = 0; i < txb->nr_frags; i++) {
 894                 struct sk_buff *skb = txb->fragments[i];
 895
 896                 r = fill_ctrlset(mac, txb, i);
 897                 if (r)
 898                         return r;
 899                 r = zd_usb_tx(&mac->chip.usb, skb->data, skb->len);
 900                 if (r)
 901                         return r;
 902         }
 903
 904         /* FIXME: shouldn't this be handled by the upper layers? */
 905         mac->netdev->trans_start = jiffies;
 906
 907         ieee80211_txb_free(txb);
 908         return 0;
 909 }
 910
 911 struct zd_rt_hdr {
 912         struct ieee80211_radiotap_header rt_hdr;
 913         u8  rt_flags;
 914         u8  rt_rate;
 915         u16 rt_channel;
 916         u16 rt_chbitmask;
 917 } __attribute__((packed));
 918
 919 static void fill_rt_header(void *buffer, struct zd_mac *mac,
 920                            const struct ieee80211_rx_stats *stats,
 921                            const struct rx_status *status)
 922 {
 923         struct zd_rt_hdr *hdr = buffer;
 924
 925         hdr->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 926         hdr->rt_hdr.it_pad = 0;
 927         hdr->rt_hdr.it_len = cpu_to_le16(sizeof(struct zd_rt_hdr));
 928         hdr->rt_hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 929                                  (1 << IEEE80211_RADIOTAP_CHANNEL) |
 930                                  (1 << IEEE80211_RADIOTAP_RATE));
 931
 932         hdr->rt_flags = 0;
 933         if (status->decryption_type & (ZD_RX_WEP64|ZD_RX_WEP128|ZD_RX_WEP256))
 934                 hdr->rt_flags |= IEEE80211_RADIOTAP_F_WEP;
 935
 936         hdr->rt_rate = stats->rate / 5;
 937
 938         /* FIXME: 802.11a */
 939         hdr->rt_channel = cpu_to_le16(ieee80211chan2mhz(
 940                                              _zd_chip_get_channel(&mac->chip)));
 941         hdr->rt_chbitmask = cpu_to_le16(IEEE80211_CHAN_2GHZ |
 942                 ((status->frame_status & ZD_RX_FRAME_MODULATION_MASK) ==
 943                 ZD_RX_OFDM ? IEEE80211_CHAN_OFDM : IEEE80211_CHAN_CCK));
 944 }
 945
 946 /* Returns 1 if the data packet is for us and 0 otherwise. */
 947 static int is_data_packet_for_us(struct ieee80211_device *ieee,
 948                                  struct ieee80211_hdr_4addr *hdr)
 949 {
 950         struct net_device *netdev = ieee->dev;
 951         u16 fc = le16_to_cpu(hdr->frame_ctl);
 952
 953         ZD_ASSERT(WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA);
 954
 955         switch (ieee->iw_mode) {
 956         case IW_MODE_ADHOC:
 957                 if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != 0 ||
 958                     memcmp(hdr->addr3, ieee->bssid, ETH_ALEN) != 0)
 959                         return 0;
 960                 break;
 961         case IW_MODE_AUTO:
 962         case IW_MODE_INFRA:
 963                 if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) !=
 964                     IEEE80211_FCTL_FROMDS ||
 965                     memcmp(hdr->addr2, ieee->bssid, ETH_ALEN) != 0)
 966                         return 0;
 967                 break;
 968         default:
 969                 ZD_ASSERT(ieee->iw_mode != IW_MODE_MONITOR);
 970                 return 0;
 971         }
 972
 973         return memcmp(hdr->addr1, netdev->dev_addr, ETH_ALEN) == 0 ||
 974                (is_multicast_ether_addr(hdr->addr1) &&
 975                 memcmp(hdr->addr3, netdev->dev_addr, ETH_ALEN) != 0) ||
 976                (netdev->flags & IFF_PROMISC);
 977 }
 978
 979 /* Filters received packets. The function returns 1 if the packet should be
 980  * forwarded to ieee80211_rx(). If the packet should be ignored the function
 981  * returns 0. If an invalid packet is found the function returns -EINVAL.
 982  *
 983  * The function calls ieee80211_rx_mgt() directly.
 984  *
 985  * It has been based on ieee80211_rx_any.
 986  */
 987 static int filter_rx(struct ieee80211_device *ieee,
 988                      const u8 *buffer, unsigned int length,
 989                      struct ieee80211_rx_stats *stats)
 990 {
 991         struct ieee80211_hdr_4addr *hdr;
 992         u16 fc;
 993
 994         if (ieee->iw_mode == IW_MODE_MONITOR)
 995                 return 1;
 996
 997         hdr = (struct ieee80211_hdr_4addr *)buffer;
 998         fc = le16_to_cpu(hdr->frame_ctl);
 999         if ((fc & IEEE80211_FCTL_VERS) != 0)
1000                 return -EINVAL;
1001
1002         switch (WLAN_FC_GET_TYPE(fc)) {
1003         case IEEE80211_FTYPE_MGMT:
1004                 if (length < sizeof(struct ieee80211_hdr_3addr))
1005                         return -EINVAL;
1006                 ieee80211_rx_mgt(ieee, hdr, stats);
1007                 return 0;
1008         case IEEE80211_FTYPE_CTL:
1009                 return 0;
1010         case IEEE80211_FTYPE_DATA:
1011                 /* Ignore invalid short buffers */
1012                 if (length < sizeof(struct ieee80211_hdr_3addr))
1013                         return -EINVAL;
1014                 return is_data_packet_for_us(ieee, hdr);
1015         }
1016
1017         return -EINVAL;
1018 }
1019
1020 static void update_qual_rssi(struct zd_mac *mac,
1021                              const u8 *buffer, unsigned int length,
1022                              u8 qual_percent, u8 rssi_percent)
1023 {
1024         unsigned long flags;
1025         struct ieee80211_hdr_3addr *hdr;
1026         int i;
1027
1028         hdr = (struct ieee80211_hdr_3addr *)buffer;
1029         if (length < offsetof(struct ieee80211_hdr_3addr, addr3))
1030                 return;
1031         if (memcmp(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid, ETH_ALEN) != 0)
1032                 return;
1033
1034         spin_lock_irqsave(&mac->lock, flags);
1035         i = mac->stats_count % ZD_MAC_STATS_BUFFER_SIZE;
1036         mac->qual_buffer[i] = qual_percent;
1037         mac->rssi_buffer[i] = rssi_percent;
1038         mac->stats_count++;
1039         spin_unlock_irqrestore(&mac->lock, flags);
1040 }
1041
1042 static int fill_rx_stats(struct ieee80211_rx_stats *stats,
1043                          const struct rx_status **pstatus,
1044                          struct zd_mac *mac,
1045                          const u8 *buffer, unsigned int length)
1046 {
1047         const struct rx_status *status;
1048
1049         *pstatus = status = zd_tail(buffer, length, sizeof(struct rx_status));
1050         if (status->frame_status & ZD_RX_ERROR) {
1051                 /* FIXME: update? */
1052                 return -EINVAL;
1053         }
1054         memset(stats, 0, sizeof(struct ieee80211_rx_stats));
1055         stats->len = length - (ZD_PLCP_HEADER_SIZE + IEEE80211_FCS_LEN +
1056                                + sizeof(struct rx_status));
1057         /* FIXME: 802.11a */
1058         stats->freq = IEEE80211_24GHZ_BAND;
1059         stats->received_channel = _zd_chip_get_channel(&mac->chip);
1060         stats->rssi = zd_rx_strength_percent(status->signal_strength);
1061         stats->signal = zd_rx_qual_percent(buffer,
1062                                           length - sizeof(struct rx_status),
1063                                           status);
1064         stats->mask = IEEE80211_STATMASK_RSSI | IEEE80211_STATMASK_SIGNAL;
1065         stats->rate = zd_rx_rate(buffer, status);
1066         if (stats->rate)
1067                 stats->mask |= IEEE80211_STATMASK_RATE;
1068
1069         return 0;
1070 }
1071
1072 int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length)
1073 {
1074         int r;
1075         struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
1076         struct ieee80211_rx_stats stats;
1077         const struct rx_status *status;
1078         struct sk_buff *skb;
1079
1080         if (length < ZD_PLCP_HEADER_SIZE + IEEE80211_1ADDR_LEN +
1081                      IEEE80211_FCS_LEN + sizeof(struct rx_status))
1082                 return -EINVAL;
1083
1084         r = fill_rx_stats(&stats, &status, mac, buffer, length);
1085         if (r)
1086                 return r;
1087
1088         length -= ZD_PLCP_HEADER_SIZE+IEEE80211_FCS_LEN+
1089                   sizeof(struct rx_status);
1090         buffer += ZD_PLCP_HEADER_SIZE;
1091
1092         update_qual_rssi(mac, buffer, length, stats.signal, stats.rssi);
1093
1094         r = filter_rx(ieee, buffer, length, &stats);
1095         if (r <= 0)
1096                 return r;
1097
1098         skb = dev_alloc_skb(sizeof(struct zd_rt_hdr) + length);
1099         if (!skb)
1100                 return -ENOMEM;
1101         if (ieee->iw_mode == IW_MODE_MONITOR)
1102                 fill_rt_header(skb_put(skb, sizeof(struct zd_rt_hdr)), mac,
1103                                &stats, status);
1104         memcpy(skb_put(skb, length), buffer, length);
1105
1106         r = ieee80211_rx(ieee, skb, &stats);
1107         if (!r)
1108                 dev_kfree_skb_any(skb);
1109         return 0;
1110 }
1111
1112 static int netdev_tx(struct ieee80211_txb *txb, struct net_device *netdev,
1113                      int pri)
1114 {
1115         return zd_mac_tx(zd_netdev_mac(netdev), txb, pri);
1116 }
1117
1118 static void set_security(struct net_device *netdev,
1119                          struct ieee80211_security *sec)
1120 {
1121         struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev);
1122         struct ieee80211_security *secinfo = &ieee->sec;
1123         int keyidx;
1124
1125         dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), "\n");
1126
1127         for (keyidx = 0; keyidx<WEP_KEYS; keyidx++)
1128                 if (sec->flags & (1<<keyidx)) {
1129                         secinfo->encode_alg[keyidx] = sec->encode_alg[keyidx];
1130                         secinfo->key_sizes[keyidx] = sec->key_sizes[keyidx];
1131                         memcpy(secinfo->keys[keyidx], sec->keys[keyidx],
1132                                SCM_KEY_LEN);
1133                 }
1134
1135         if (sec->flags & SEC_ACTIVE_KEY) {
1136                 secinfo->active_key = sec->active_key;
1137                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1138                         "   .active_key = %d\n", sec->active_key);
1139         }
1140         if (sec->flags & SEC_UNICAST_GROUP) {
1141                 secinfo->unicast_uses_group = sec->unicast_uses_group;
1142                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1143                         "   .unicast_uses_group = %d\n",
1144                         sec->unicast_uses_group);
1145         }
1146         if (sec->flags & SEC_LEVEL) {
1147                 secinfo->level = sec->level;
1148                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1149                         "   .level = %d\n", sec->level);
1150         }
1151         if (sec->flags & SEC_ENABLED) {
1152                 secinfo->enabled = sec->enabled;
1153                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1154                         "   .enabled = %d\n", sec->enabled);
1155         }
1156         if (sec->flags & SEC_ENCRYPT) {
1157                 secinfo->encrypt = sec->encrypt;
1158                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1159                         "   .encrypt = %d\n", sec->encrypt);
1160         }
1161         if (sec->flags & SEC_AUTH_MODE) {
1162                 secinfo->auth_mode = sec->auth_mode;
1163                 dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)),
1164                         "   .auth_mode = %d\n", sec->auth_mode);
1165         }
1166 }
1167
1168 static void ieee_init(struct ieee80211_device *ieee)
1169 {
1170         ieee->mode = IEEE_B | IEEE_G;
1171         ieee->freq_band = IEEE80211_24GHZ_BAND;
1172         ieee->modulation = IEEE80211_OFDM_MODULATION | IEEE80211_CCK_MODULATION;
1173         ieee->tx_headroom = sizeof(struct zd_ctrlset);
1174         ieee->set_security = set_security;
1175         ieee->hard_start_xmit = netdev_tx;
1176
1177         /* Software encryption/decryption for now */
1178         ieee->host_build_iv = 0;
1179         ieee->host_encrypt = 1;
1180         ieee->host_decrypt = 1;
1181
1182         /* FIXME: default to managed mode, until ieee80211 and zd1211rw can
1183          * correctly support AUTO */
1184         ieee->iw_mode = IW_MODE_INFRA;
1185 }
1186
1187 static void softmac_init(struct ieee80211softmac_device *sm)
1188 {
1189         sm->set_channel = set_channel;
1190         sm->bssinfo_change = bssinfo_change;
1191 }
1192
1193 struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev)
1194 {
1195         struct zd_mac *mac = zd_netdev_mac(ndev);
1196         struct iw_statistics *iw_stats = &mac->iw_stats;
1197         unsigned int i, count, qual_total, rssi_total;
1198
1199         memset(iw_stats, 0, sizeof(struct iw_statistics));
1200         /* We are not setting the status, because ieee->state is not updated
1201          * at all and this driver doesn't track authentication state.
1202          */
1203         spin_lock_irq(&mac->lock);
1204         count = mac->stats_count < ZD_MAC_STATS_BUFFER_SIZE ?
1205                 mac->stats_count : ZD_MAC_STATS_BUFFER_SIZE;
1206         qual_total = rssi_total = 0;
1207         for (i = 0; i < count; i++) {
1208                 qual_total += mac->qual_buffer[i];
1209                 rssi_total += mac->rssi_buffer[i];
1210         }
1211         spin_unlock_irq(&mac->lock);
1212         iw_stats->qual.updated = IW_QUAL_NOISE_INVALID;
1213         if (count > 0) {
1214                 iw_stats->qual.qual = qual_total / count;
1215                 iw_stats->qual.level = rssi_total / count;
1216                 iw_stats->qual.updated |=
1217                         IW_QUAL_QUAL_UPDATED|IW_QUAL_LEVEL_UPDATED;
1218         } else {
1219                 iw_stats->qual.updated |=
1220                         IW_QUAL_QUAL_INVALID|IW_QUAL_LEVEL_INVALID;
1221         }
1222         /* TODO: update counter */
1223         return iw_stats;
1224 }
1225
1226 #define LINK_LED_WORK_DELAY HZ
1227
1228 static void link_led_handler(void *p)
1229 {
1230         struct zd_mac *mac = p;
1231         struct zd_chip *chip = &mac->chip;
1232         struct ieee80211softmac_device *sm = ieee80211_priv(mac->netdev);
1233         int is_associated;
1234         int r;
1235
1236         spin_lock_irq(&mac->lock);
1237         is_associated = sm->associnfo.associated != 0;
1238         spin_unlock_irq(&mac->lock);
1239
1240         r = zd_chip_control_leds(chip,
1241                                  is_associated ? LED_ASSOCIATED : LED_SCANNING);
1242         if (r)
1243                 dev_err(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r);
1244
1245         queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work,
1246                            LINK_LED_WORK_DELAY);
1247 }
1248
1249 static void housekeeping_init(struct zd_mac *mac)
1250 {
1251         INIT_WORK(&mac->housekeeping.link_led_work, link_led_handler, mac);
1252 }
1253
1254 static void housekeeping_enable(struct zd_mac *mac)
1255 {
1256         dev_dbg_f(zd_mac_dev(mac), "\n");
1257         queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work,
1258                            0);
1259 }
1260
1261 static void housekeeping_disable(struct zd_mac *mac)
1262 {
1263         dev_dbg_f(zd_mac_dev(mac), "\n");
1264         cancel_rearming_delayed_workqueue(zd_workqueue,
1265                 &mac->housekeeping.link_led_work);
1266         zd_chip_control_leds(&mac->chip, LED_OFF);
1267 }