git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/etherdevice.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/if_arp.h>
  12 #include <linux/kthread.h>
  13 #include <linux/kfifo.h>
  14 #include <linux/stddef.h>
  15
  16 #include <net/iw_handler.h>
  17 #include <net/ieee80211.h>
  18
  19 #include "host.h"
  20 #include "decl.h"
  21 #include "dev.h"
  22 #include "wext.h"
  23 #include "debugfs.h"
  24 #include "scan.h"
  25 #include "assoc.h"
  26 #include "cmd.h"
  27
  28 #define DRIVER_RELEASE_VERSION "323.p0"
  29 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  30 #ifdef  DEBUG
  31     "-dbg"
  32 #endif
  33     "";
  34
  35
  36 /* Module parameters */
  37 unsigned int lbs_debug;
  38 EXPORT_SYMBOL_GPL(lbs_debug);
  39 module_param_named(libertas_debug, lbs_debug, int, 0644);
  40
  41
  42 /* This global structure is used to send the confirm_sleep command as
  43  * fast as possible down to the firmware. */
  44 struct cmd_confirm_sleep confirm_sleep;
  45
  46
  47 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  48 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  49 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  50 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  51 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  52
  53 /* Format { channel, frequency (MHz), maxtxpower } */
  54 /* band: 'B/G', region: USA FCC/Canada IC */
  55 static struct chan_freq_power channel_freq_power_US_BG[] = {
  56         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  57         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  58         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  59         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  60         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  61         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  62         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  63         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  64         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  65         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  66         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  67 };
  68
  69 /* band: 'B/G', region: Europe ETSI */
  70 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  71         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  72         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  73         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  74         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  75         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  76         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  77         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  78         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  79         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  80         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  81         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  82         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  83         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  84 };
  85
  86 /* band: 'B/G', region: Spain */
  87 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  88         {10, 2457, LBS_TX_PWR_DEFAULT},
  89         {11, 2462, LBS_TX_PWR_DEFAULT}
  90 };
  91
  92 /* band: 'B/G', region: France */
  93 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  94         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  95         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  96         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  97         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  98 };
  99
 100 /* band: 'B/G', region: Japan */
 101 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
 102         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
 103         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
 104         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
 105         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
 106         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 107         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 108         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 109         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 110         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 111         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 112         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 113         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 114         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 115         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 116 };
 117
 118 /**
 119  * the structure for channel, frequency and power
 120  */
 121 struct region_cfp_table {
 122         u8 region;
 123         struct chan_freq_power *cfp_BG;
 124         int cfp_no_BG;
 125 };
 126
 127 /**
 128  * the structure for the mapping between region and CFP
 129  */
 130 static struct region_cfp_table region_cfp_table[] = {
 131         {0x10,                  /*US FCC */
 132          channel_freq_power_US_BG,
 133          ARRAY_SIZE(channel_freq_power_US_BG),
 134          }
 135         ,
 136         {0x20,                  /*CANADA IC */
 137          channel_freq_power_US_BG,
 138          ARRAY_SIZE(channel_freq_power_US_BG),
 139          }
 140         ,
 141         {0x30, /*EU*/ channel_freq_power_EU_BG,
 142          ARRAY_SIZE(channel_freq_power_EU_BG),
 143          }
 144         ,
 145         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 146          ARRAY_SIZE(channel_freq_power_SPN_BG),
 147          }
 148         ,
 149         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 150          ARRAY_SIZE(channel_freq_power_FR_BG),
 151          }
 152         ,
 153         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 154          ARRAY_SIZE(channel_freq_power_JPN_BG),
 155          }
 156         ,
 157 /*Add new region here */
 158 };
 159
 160 /**
 161  * the table to keep region code
 162  */
 163 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 164     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 165
 166 /**
 167  * 802.11b/g supported bitrates (in 500Kb/s units)
 168  */
 169 u8 lbs_bg_rates[MAX_RATES] =
 170     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 171 0x00, 0x00 };
 172
 173 /**
 174  * FW rate table.  FW refers to rates by their index in this table, not by the
 175  * rate value itself.  Values of 0x00 are
 176  * reserved positions.
 177  */
 178 static u8 fw_data_rates[MAX_RATES] =
 179     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 180       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 181 };
 182
 183 /**
 184  *  @brief use index to get the data rate
 185  *
 186  *  @param idx                The index of data rate
 187  *  @return                     data rate or 0
 188  */
 189 u32 lbs_fw_index_to_data_rate(u8 idx)
 190 {
 191         if (idx >= sizeof(fw_data_rates))
 192                 idx = 0;
 193         return fw_data_rates[idx];
 194 }
 195
 196 /**
 197  *  @brief use rate to get the index
 198  *
 199  *  @param rate                 data rate
 200  *  @return                     index or 0
 201  */
 202 u8 lbs_data_rate_to_fw_index(u32 rate)
 203 {
 204         u8 i;
 205
 206         if (!rate)
 207                 return 0;
 208
 209         for (i = 0; i < sizeof(fw_data_rates); i++) {
 210                 if (rate == fw_data_rates[i])
 211                         return i;
 212         }
 213         return 0;
 214 }
 215
 216 /**
 217  * Attributes exported through sysfs
 218  */
 219
 220 /**
 221  * @brief Get function for sysfs attribute anycast_mask
 222  */
 223 static ssize_t lbs_anycast_get(struct device *dev,
 224                 struct device_attribute *attr, char * buf)
 225 {
 226         struct lbs_private *priv = to_net_dev(dev)->priv;
 227         struct cmd_ds_mesh_access mesh_access;
 228         int ret;
 229
 230         memset(&mesh_access, 0, sizeof(mesh_access));
 231
 232         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 233         if (ret)
 234                 return ret;
 235
 236         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 237 }
 238
 239 /**
 240  * @brief Set function for sysfs attribute anycast_mask
 241  */
 242 static ssize_t lbs_anycast_set(struct device *dev,
 243                 struct device_attribute *attr, const char * buf, size_t count)
 244 {
 245         struct lbs_private *priv = to_net_dev(dev)->priv;
 246         struct cmd_ds_mesh_access mesh_access;
 247         uint32_t datum;
 248         int ret;
 249
 250         memset(&mesh_access, 0, sizeof(mesh_access));
 251         sscanf(buf, "%x", &datum);
 252         mesh_access.data[0] = cpu_to_le32(datum);
 253
 254         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 255         if (ret)
 256                 return ret;
 257
 258         return strlen(buf);
 259 }
 260
 261 static int lbs_add_rtap(struct lbs_private *priv);
 262 static void lbs_remove_rtap(struct lbs_private *priv);
 263 static int lbs_add_mesh(struct lbs_private *priv);
 264 static void lbs_remove_mesh(struct lbs_private *priv);
 265
 266
 267 /**
 268  * Get function for sysfs attribute rtap
 269  */
 270 static ssize_t lbs_rtap_get(struct device *dev,
 271                 struct device_attribute *attr, char * buf)
 272 {
 273         struct lbs_private *priv = to_net_dev(dev)->priv;
 274         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 275 }
 276
 277 /**
 278  *  Set function for sysfs attribute rtap
 279  */
 280 static ssize_t lbs_rtap_set(struct device *dev,
 281                 struct device_attribute *attr, const char * buf, size_t count)
 282 {
 283         int monitor_mode;
 284         struct lbs_private *priv = to_net_dev(dev)->priv;
 285
 286         sscanf(buf, "%x", &monitor_mode);
 287         if (monitor_mode) {
 288                 if (priv->monitormode == monitor_mode)
 289                         return strlen(buf);
 290                 if (!priv->monitormode) {
 291                         if (priv->infra_open || priv->mesh_open)
 292                                 return -EBUSY;
 293                         if (priv->mode == IW_MODE_INFRA)
 294                                 lbs_cmd_80211_deauthenticate(priv,
 295                                                              priv->curbssparams.bssid,
 296                                                              WLAN_REASON_DEAUTH_LEAVING);
 297                         else if (priv->mode == IW_MODE_ADHOC)
 298                                 lbs_adhoc_stop(priv);
 299                         lbs_add_rtap(priv);
 300                 }
 301                 priv->monitormode = monitor_mode;
 302         } else {
 303                 if (!priv->monitormode)
 304                         return strlen(buf);
 305                 priv->monitormode = 0;
 306                 lbs_remove_rtap(priv);
 307
 308                 if (priv->currenttxskb) {
 309                         dev_kfree_skb_any(priv->currenttxskb);
 310                         priv->currenttxskb = NULL;
 311                 }
 312
 313                 /* Wake queues, command thread, etc. */
 314                 lbs_host_to_card_done(priv);
 315         }
 316
 317         lbs_prepare_and_send_command(priv,
 318                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 319                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 320         return strlen(buf);
 321 }
 322
 323 /**
 324  * lbs_rtap attribute to be exported per ethX interface
 325  * through sysfs (/sys/class/net/ethX/lbs_rtap)
 326  */
 327 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
 328
 329 /**
 330  * Get function for sysfs attribute mesh
 331  */
 332 static ssize_t lbs_mesh_get(struct device *dev,
 333                 struct device_attribute *attr, char * buf)
 334 {
 335         struct lbs_private *priv = to_net_dev(dev)->priv;
 336         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 337 }
 338
 339 /**
 340  *  Set function for sysfs attribute mesh
 341  */
 342 static ssize_t lbs_mesh_set(struct device *dev,
 343                 struct device_attribute *attr, const char * buf, size_t count)
 344 {
 345         struct lbs_private *priv = to_net_dev(dev)->priv;
 346         int enable;
 347         int ret, action = CMD_ACT_MESH_CONFIG_STOP;
 348
 349         sscanf(buf, "%x", &enable);
 350         enable = !!enable;
 351         if (enable == !!priv->mesh_dev)
 352                 return count;
 353         if (enable)
 354                 action = CMD_ACT_MESH_CONFIG_START;
 355         ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
 356         if (ret)
 357                 return ret;
 358
 359         if (enable)
 360                 lbs_add_mesh(priv);
 361         else
 362                 lbs_remove_mesh(priv);
 363
 364         return count;
 365 }
 366
 367 /**
 368  * lbs_mesh attribute to be exported per ethX interface
 369  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 370  */
 371 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 372
 373 /**
 374  * anycast_mask attribute to be exported per mshX interface
 375  * through sysfs (/sys/class/net/mshX/anycast_mask)
 376  */
 377 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 378
 379 static struct attribute *lbs_mesh_sysfs_entries[] = {
 380         &dev_attr_anycast_mask.attr,
 381         NULL,
 382 };
 383
 384 static struct attribute_group lbs_mesh_attr_group = {
 385         .attrs = lbs_mesh_sysfs_entries,
 386 };
 387
 388 /**
 389  *  @brief This function opens the ethX or mshX interface
 390  *
 391  *  @param dev     A pointer to net_device structure
 392  *  @return        0 or -EBUSY if monitor mode active
 393  */
 394 static int lbs_dev_open(struct net_device *dev)
 395 {
 396         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 397         int ret = 0;
 398
 399         lbs_deb_enter(LBS_DEB_NET);
 400
 401         spin_lock_irq(&priv->driver_lock);
 402
 403         if (priv->monitormode) {
 404                 ret = -EBUSY;
 405                 goto out;
 406         }
 407
 408         if (dev == priv->mesh_dev) {
 409                 priv->mesh_open = 1;
 410                 priv->mesh_connect_status = LBS_CONNECTED;
 411                 netif_carrier_on(dev);
 412         } else {
 413                 priv->infra_open = 1;
 414
 415                 if (priv->connect_status == LBS_CONNECTED)
 416                         netif_carrier_on(dev);
 417                 else
 418                         netif_carrier_off(dev);
 419         }
 420
 421         if (!priv->tx_pending_len)
 422                 netif_wake_queue(dev);
 423  out:
 424
 425         spin_unlock_irq(&priv->driver_lock);
 426         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 427         return ret;
 428 }
 429
 430 /**
 431  *  @brief This function closes the mshX interface
 432  *
 433  *  @param dev     A pointer to net_device structure
 434  *  @return        0
 435  */
 436 static int lbs_mesh_stop(struct net_device *dev)
 437 {
 438         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 439
 440         lbs_deb_enter(LBS_DEB_MESH);
 441         spin_lock_irq(&priv->driver_lock);
 442
 443         priv->mesh_open = 0;
 444         priv->mesh_connect_status = LBS_DISCONNECTED;
 445
 446         netif_stop_queue(dev);
 447         netif_carrier_off(dev);
 448
 449         spin_unlock_irq(&priv->driver_lock);
 450
 451         schedule_work(&priv->mcast_work);
 452
 453         lbs_deb_leave(LBS_DEB_MESH);
 454         return 0;
 455 }
 456
 457 /**
 458  *  @brief This function closes the ethX interface
 459  *
 460  *  @param dev     A pointer to net_device structure
 461  *  @return        0
 462  */
 463 static int lbs_eth_stop(struct net_device *dev)
 464 {
 465         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 466
 467         lbs_deb_enter(LBS_DEB_NET);
 468
 469         spin_lock_irq(&priv->driver_lock);
 470         priv->infra_open = 0;
 471         netif_stop_queue(dev);
 472         spin_unlock_irq(&priv->driver_lock);
 473
 474         schedule_work(&priv->mcast_work);
 475
 476         lbs_deb_leave(LBS_DEB_NET);
 477         return 0;
 478 }
 479
 480 static void lbs_tx_timeout(struct net_device *dev)
 481 {
 482         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 483
 484         lbs_deb_enter(LBS_DEB_TX);
 485
 486         lbs_pr_err("tx watch dog timeout\n");
 487
 488         dev->trans_start = jiffies;
 489
 490         if (priv->currenttxskb)
 491                 lbs_send_tx_feedback(priv, 0);
 492
 493         /* XX: Shouldn't we also call into the hw-specific driver
 494            to kick it somehow? */
 495         lbs_host_to_card_done(priv);
 496
 497         /* More often than not, this actually happens because the
 498            firmware has crapped itself -- rather than just a very
 499            busy medium. So send a harmless command, and if/when
 500            _that_ times out, we'll kick it in the head. */
 501         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 502                                      0, 0, NULL);
 503
 504         lbs_deb_leave(LBS_DEB_TX);
 505 }
 506
 507 void lbs_host_to_card_done(struct lbs_private *priv)
 508 {
 509         unsigned long flags;
 510
 511         lbs_deb_enter(LBS_DEB_THREAD);
 512
 513         spin_lock_irqsave(&priv->driver_lock, flags);
 514
 515         priv->dnld_sent = DNLD_RES_RECEIVED;
 516
 517         /* Wake main thread if commands are pending */
 518         if (!priv->cur_cmd || priv->tx_pending_len > 0)
 519                 wake_up_interruptible(&priv->waitq);
 520
 521         spin_unlock_irqrestore(&priv->driver_lock, flags);
 522         lbs_deb_leave(LBS_DEB_THREAD);
 523 }
 524 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 525
 526 /**
 527  *  @brief This function returns the network statistics
 528  *
 529  *  @param dev     A pointer to struct lbs_private structure
 530  *  @return        A pointer to net_device_stats structure
 531  */
 532 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 533 {
 534         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 535
 536         lbs_deb_enter(LBS_DEB_NET);
 537         return &priv->stats;
 538 }
 539
 540 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 541 {
 542         int ret = 0;
 543         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 544         struct sockaddr *phwaddr = addr;
 545         struct cmd_ds_802_11_mac_address cmd;
 546
 547         lbs_deb_enter(LBS_DEB_NET);
 548
 549         /* In case it was called from the mesh device */
 550         dev = priv->dev;
 551
 552         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 553         cmd.action = cpu_to_le16(CMD_ACT_SET);
 554         memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
 555
 556         ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
 557         if (ret) {
 558                 lbs_deb_net("set MAC address failed\n");
 559                 goto done;
 560         }
 561
 562         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 563         memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 564         if (priv->mesh_dev)
 565                 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
 566
 567 done:
 568         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 569         return ret;
 570 }
 571
 572
 573 static inline int mac_in_list(unsigned char *list, int list_len,
 574                               unsigned char *mac)
 575 {
 576         while (list_len) {
 577                 if (!memcmp(list, mac, ETH_ALEN))
 578                         return 1;
 579                 list += ETH_ALEN;
 580                 list_len--;
 581         }
 582         return 0;
 583 }
 584
 585
 586 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
 587                                struct net_device *dev, int nr_addrs)
 588 {
 589         int i = nr_addrs;
 590         struct dev_mc_list *mc_list;
 591
 592         if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
 593                 return nr_addrs;
 594
 595         netif_addr_lock_bh(dev);
 596         for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
 597                 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
 598                         lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
 599                                     mc_list->dmi_addr);
 600                         continue;
 601                 }
 602
 603                 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
 604                         break;
 605                 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
 606                 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
 607                             mc_list->dmi_addr);
 608                 i++;
 609         }
 610         netif_addr_unlock_bh(dev);
 611         if (mc_list)
 612                 return -EOVERFLOW;
 613
 614         return i;
 615 }
 616
 617 static void lbs_set_mcast_worker(struct work_struct *work)
 618 {
 619         struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
 620         struct cmd_ds_mac_multicast_adr mcast_cmd;
 621         int dev_flags;
 622         int nr_addrs;
 623         int old_mac_control = priv->mac_control;
 624
 625         lbs_deb_enter(LBS_DEB_NET);
 626
 627         dev_flags = priv->dev->flags;
 628         if (priv->mesh_dev)
 629                 dev_flags |= priv->mesh_dev->flags;
 630
 631         if (dev_flags & IFF_PROMISC) {
 632                 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 633                 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 634                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 635                 goto out_set_mac_control;
 636         } else if (dev_flags & IFF_ALLMULTI) {
 637         do_allmulti:
 638                 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 639                 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 640                                        CMD_ACT_MAC_MULTICAST_ENABLE);
 641                 goto out_set_mac_control;
 642         }
 643
 644         /* Once for priv->dev, again for priv->mesh_dev if it exists */
 645         nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
 646         if (nr_addrs >= 0 && priv->mesh_dev)
 647                 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
 648         if (nr_addrs < 0)
 649                 goto do_allmulti;
 650
 651         if (nr_addrs) {
 652                 int size = offsetof(struct cmd_ds_mac_multicast_adr,
 653                                     maclist[6*nr_addrs]);
 654
 655                 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
 656                 mcast_cmd.hdr.size = cpu_to_le16(size);
 657                 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
 658
 659                 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
 660
 661                 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
 662         } else
 663                 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
 664
 665         priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
 666                                CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
 667  out_set_mac_control:
 668         if (priv->mac_control != old_mac_control)
 669                 lbs_set_mac_control(priv);
 670
 671         lbs_deb_leave(LBS_DEB_NET);
 672 }
 673
 674 static void lbs_set_multicast_list(struct net_device *dev)
 675 {
 676         struct lbs_private *priv = dev->priv;
 677
 678         schedule_work(&priv->mcast_work);
 679 }
 680
 681 /**
 682  *  @brief This function handles the major jobs in the LBS driver.
 683  *  It handles all events generated by firmware, RX data received
 684  *  from firmware and TX data sent from kernel.
 685  *
 686  *  @param data    A pointer to lbs_thread structure
 687  *  @return        0
 688  */
 689 static int lbs_thread(void *data)
 690 {
 691         struct net_device *dev = data;
 692         struct lbs_private *priv = dev->priv;
 693         wait_queue_t wait;
 694
 695         lbs_deb_enter(LBS_DEB_THREAD);
 696
 697         init_waitqueue_entry(&wait, current);
 698
 699         for (;;) {
 700                 int shouldsleep;
 701                 u8 resp_idx;
 702
 703                 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
 704                                 priv->currenttxskb, priv->dnld_sent);
 705
 706                 add_wait_queue(&priv->waitq, &wait);
 707                 set_current_state(TASK_INTERRUPTIBLE);
 708                 spin_lock_irq(&priv->driver_lock);
 709
 710                 if (kthread_should_stop())
 711                         shouldsleep = 0;        /* Bye */
 712                 else if (priv->surpriseremoved)
 713                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
 714                 else if (priv->psstate == PS_STATE_SLEEP)
 715                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 716                 else if (priv->cmd_timed_out)
 717                         shouldsleep = 0;        /* Command timed out. Recover */
 718                 else if (!priv->fw_ready)
 719                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 720                 else if (priv->dnld_sent)
 721                         shouldsleep = 1;        /* Something is en route to the device already */
 722                 else if (priv->tx_pending_len > 0)
 723                         shouldsleep = 0;        /* We've a packet to send */
 724                 else if (priv->resp_len[priv->resp_idx])
 725                         shouldsleep = 0;        /* We have a command response */
 726                 else if (priv->cur_cmd)
 727                         shouldsleep = 1;        /* Can't send a command; one already running */
 728                 else if (!list_empty(&priv->cmdpendingq))
 729                         shouldsleep = 0;        /* We have a command to send */
 730                 else if (__kfifo_len(priv->event_fifo))
 731                         shouldsleep = 0;        /* We have an event to process */
 732                 else
 733                         shouldsleep = 1;        /* No command */
 734
 735                 if (shouldsleep) {
 736                         lbs_deb_thread("sleeping, connect_status %d, "
 737                                 "psmode %d, psstate %d\n",
 738                                 priv->connect_status,
 739                                 priv->psmode, priv->psstate);
 740                         spin_unlock_irq(&priv->driver_lock);
 741                         schedule();
 742                 } else
 743                         spin_unlock_irq(&priv->driver_lock);
 744
 745                 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
 746                                priv->currenttxskb, priv->dnld_sent);
 747
 748                 set_current_state(TASK_RUNNING);
 749                 remove_wait_queue(&priv->waitq, &wait);
 750
 751                 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
 752                                priv->currenttxskb, priv->dnld_sent);
 753
 754                 if (kthread_should_stop()) {
 755                         lbs_deb_thread("break from main thread\n");
 756                         break;
 757                 }
 758
 759                 if (priv->surpriseremoved) {
 760                         lbs_deb_thread("adapter removed; waiting to die...\n");
 761                         continue;
 762                 }
 763
 764                 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
 765                        priv->currenttxskb, priv->dnld_sent);
 766
 767                 /* Process any pending command response */
 768                 spin_lock_irq(&priv->driver_lock);
 769                 resp_idx = priv->resp_idx;
 770                 if (priv->resp_len[resp_idx]) {
 771                         spin_unlock_irq(&priv->driver_lock);
 772                         lbs_process_command_response(priv,
 773                                 priv->resp_buf[resp_idx],
 774                                 priv->resp_len[resp_idx]);
 775                         spin_lock_irq(&priv->driver_lock);
 776                         priv->resp_len[resp_idx] = 0;
 777                 }
 778                 spin_unlock_irq(&priv->driver_lock);
 779
 780                 /* command timeout stuff */
 781                 if (priv->cmd_timed_out && priv->cur_cmd) {
 782                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
 783
 784                         if (++priv->nr_retries > 3) {
 785                                 lbs_pr_info("Excessive timeouts submitting "
 786                                         "command 0x%04x\n",
 787                                         le16_to_cpu(cmdnode->cmdbuf->command));
 788                                 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
 789                                 priv->nr_retries = 0;
 790                                 if (priv->reset_card)
 791                                         priv->reset_card(priv);
 792                         } else {
 793                                 priv->cur_cmd = NULL;
 794                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 795                                 lbs_pr_info("requeueing command 0x%04x due "
 796                                         "to timeout (#%d)\n",
 797                                         le16_to_cpu(cmdnode->cmdbuf->command),
 798                                         priv->nr_retries);
 799
 800                                 /* Stick it back at the _top_ of the pending queue
 801                                    for immediate resubmission */
 802                                 list_add(&cmdnode->list, &priv->cmdpendingq);
 803                         }
 804                 }
 805                 priv->cmd_timed_out = 0;
 806
 807                 /* Process hardware events, e.g. card removed, link lost */
 808                 spin_lock_irq(&priv->driver_lock);
 809                 while (__kfifo_len(priv->event_fifo)) {
 810                         u32 event;
 811
 812                         __kfifo_get(priv->event_fifo, (unsigned char *) &event,
 813                                 sizeof(event));
 814                         spin_unlock_irq(&priv->driver_lock);
 815                         lbs_process_event(priv, event);
 816                         spin_lock_irq(&priv->driver_lock);
 817                 }
 818                 spin_unlock_irq(&priv->driver_lock);
 819
 820                 if (!priv->fw_ready)
 821                         continue;
 822
 823                 /* Check if we need to confirm Sleep Request received previously */
 824                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 825                     !priv->dnld_sent && !priv->cur_cmd) {
 826                         if (priv->connect_status == LBS_CONNECTED) {
 827                                 lbs_deb_thread("pre-sleep, currenttxskb %p, "
 828                                         "dnld_sent %d, cur_cmd %p\n",
 829                                         priv->currenttxskb, priv->dnld_sent,
 830                                         priv->cur_cmd);
 831
 832                                 lbs_ps_confirm_sleep(priv);
 833                         } else {
 834                                 /* workaround for firmware sending
 835                                  * deauth/linkloss event immediately
 836                                  * after sleep request; remove this
 837                                  * after firmware fixes it
 838                                  */
 839                                 priv->psstate = PS_STATE_AWAKE;
 840                                 lbs_pr_alert("ignore PS_SleepConfirm in "
 841                                         "non-connected state\n");
 842                         }
 843                 }
 844
 845                 /* The PS state is changed during processing of Sleep Request
 846                  * event above
 847                  */
 848                 if ((priv->psstate == PS_STATE_SLEEP) ||
 849                     (priv->psstate == PS_STATE_PRE_SLEEP))
 850                         continue;
 851
 852                 /* Execute the next command */
 853                 if (!priv->dnld_sent && !priv->cur_cmd)
 854                         lbs_execute_next_command(priv);
 855
 856                 /* Wake-up command waiters which can't sleep in
 857                  * lbs_prepare_and_send_command
 858                  */
 859                 if (!list_empty(&priv->cmdpendingq))
 860                         wake_up_all(&priv->cmd_pending);
 861
 862                 spin_lock_irq(&priv->driver_lock);
 863                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 864                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 865                                                         priv->tx_pending_buf,
 866                                                         priv->tx_pending_len);
 867                         if (ret) {
 868                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 869                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 870                         }
 871                         priv->tx_pending_len = 0;
 872                         if (!priv->currenttxskb) {
 873                                 /* We can wake the queues immediately if we aren't
 874                                    waiting for TX feedback */
 875                                 if (priv->connect_status == LBS_CONNECTED)
 876                                         netif_wake_queue(priv->dev);
 877                                 if (priv->mesh_dev &&
 878                                     priv->mesh_connect_status == LBS_CONNECTED)
 879                                         netif_wake_queue(priv->mesh_dev);
 880                         }
 881                 }
 882                 spin_unlock_irq(&priv->driver_lock);
 883         }
 884
 885         del_timer(&priv->command_timer);
 886         wake_up_all(&priv->cmd_pending);
 887
 888         lbs_deb_leave(LBS_DEB_THREAD);
 889         return 0;
 890 }
 891
 892 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
 893                                 struct cmd_header *cmd)
 894 {
 895         lbs_deb_enter(LBS_DEB_FW);
 896
 897         netif_device_detach(priv->dev);
 898         if (priv->mesh_dev)
 899                 netif_device_detach(priv->mesh_dev);
 900
 901         priv->fw_ready = 0;
 902         lbs_deb_leave(LBS_DEB_FW);
 903         return 0;
 904 }
 905
 906 int lbs_suspend(struct lbs_private *priv)
 907 {
 908         struct cmd_header cmd;
 909         int ret;
 910
 911         lbs_deb_enter(LBS_DEB_FW);
 912
 913         if (priv->wol_criteria == 0xffffffff) {
 914                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
 915                 return -EINVAL;
 916         }
 917
 918         memset(&cmd, 0, sizeof(cmd));
 919
 920         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
 921                         sizeof(cmd), lbs_suspend_callback, 0);
 922         if (ret)
 923                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
 924
 925         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 926         return ret;
 927 }
 928 EXPORT_SYMBOL_GPL(lbs_suspend);
 929
 930 void lbs_resume(struct lbs_private *priv)
 931 {
 932         lbs_deb_enter(LBS_DEB_FW);
 933
 934         priv->fw_ready = 1;
 935
 936         /* Firmware doesn't seem to give us RX packets any more
 937            until we send it some command. Might as well update */
 938         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 939                                      0, 0, NULL);
 940
 941         netif_device_attach(priv->dev);
 942         if (priv->mesh_dev)
 943                 netif_device_attach(priv->mesh_dev);
 944
 945         lbs_deb_leave(LBS_DEB_FW);
 946 }
 947 EXPORT_SYMBOL_GPL(lbs_resume);
 948
 949 /**
 950  *  @brief This function downloads firmware image, gets
 951  *  HW spec from firmware and set basic parameters to
 952  *  firmware.
 953  *
 954  *  @param priv    A pointer to struct lbs_private structure
 955  *  @return        0 or -1
 956  */
 957 static int lbs_setup_firmware(struct lbs_private *priv)
 958 {
 959         int ret = -1;
 960         s16 curlevel = 0, minlevel = 0, maxlevel = 0;
 961
 962         lbs_deb_enter(LBS_DEB_FW);
 963
 964         /* Read MAC address from firmware */
 965         memset(priv->current_addr, 0xff, ETH_ALEN);
 966         ret = lbs_update_hw_spec(priv);
 967         if (ret)
 968                 goto done;
 969
 970         /* Read power levels if available */
 971         ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
 972         if (ret == 0) {
 973                 priv->txpower_cur = curlevel;
 974                 priv->txpower_min = minlevel;
 975                 priv->txpower_max = maxlevel;
 976         }
 977
 978         lbs_set_mac_control(priv);
 979 done:
 980         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 981         return ret;
 982 }
 983
 984 /**
 985  *  This function handles the timeout of command sending.
 986  *  It will re-send the same command again.
 987  */
 988 static void command_timer_fn(unsigned long data)
 989 {
 990         struct lbs_private *priv = (struct lbs_private *)data;
 991         unsigned long flags;
 992
 993         lbs_deb_enter(LBS_DEB_CMD);
 994         spin_lock_irqsave(&priv->driver_lock, flags);
 995
 996         if (!priv->cur_cmd)
 997                 goto out;
 998
 999         lbs_pr_info("command 0x%04x timed out\n",
1000                 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
1001
1002         priv->cmd_timed_out = 1;
1003         wake_up_interruptible(&priv->waitq);
1004 out:
1005         spin_unlock_irqrestore(&priv->driver_lock, flags);
1006         lbs_deb_leave(LBS_DEB_CMD);
1007 }
1008
1009 static void lbs_sync_channel_worker(struct work_struct *work)
1010 {
1011         struct lbs_private *priv = container_of(work, struct lbs_private,
1012                 sync_channel);
1013
1014         lbs_deb_enter(LBS_DEB_MAIN);
1015         if (lbs_update_channel(priv))
1016                 lbs_pr_info("Channel synchronization failed.");
1017         lbs_deb_leave(LBS_DEB_MAIN);
1018 }
1019
1020
1021 static int lbs_init_adapter(struct lbs_private *priv)
1022 {
1023         size_t bufsize;
1024         int i, ret = 0;
1025
1026         lbs_deb_enter(LBS_DEB_MAIN);
1027
1028         /* Allocate buffer to store the BSSID list */
1029         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1030         priv->networks = kzalloc(bufsize, GFP_KERNEL);
1031         if (!priv->networks) {
1032                 lbs_pr_err("Out of memory allocating beacons\n");
1033                 ret = -1;
1034                 goto out;
1035         }
1036
1037         /* Initialize scan result lists */
1038         INIT_LIST_HEAD(&priv->network_free_list);
1039         INIT_LIST_HEAD(&priv->network_list);
1040         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1041                 list_add_tail(&priv->networks[i].list,
1042                               &priv->network_free_list);
1043         }
1044
1045         memset(priv->current_addr, 0xff, ETH_ALEN);
1046
1047         priv->connect_status = LBS_DISCONNECTED;
1048         priv->mesh_connect_status = LBS_DISCONNECTED;
1049         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1050         priv->mode = IW_MODE_INFRA;
1051         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1052         priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1053         priv->radio_on = 1;
1054         priv->enablehwauto = 1;
1055         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1056         priv->psmode = LBS802_11POWERMODECAM;
1057         priv->psstate = PS_STATE_FULL_POWER;
1058
1059         mutex_init(&priv->lock);
1060
1061         setup_timer(&priv->command_timer, command_timer_fn,
1062                 (unsigned long)priv);
1063
1064         INIT_LIST_HEAD(&priv->cmdfreeq);
1065         INIT_LIST_HEAD(&priv->cmdpendingq);
1066
1067         spin_lock_init(&priv->driver_lock);
1068         init_waitqueue_head(&priv->cmd_pending);
1069
1070         /* Allocate the command buffers */
1071         if (lbs_allocate_cmd_buffer(priv)) {
1072                 lbs_pr_err("Out of memory allocating command buffers\n");
1073                 ret = -ENOMEM;
1074                 goto out;
1075         }
1076         priv->resp_idx = 0;
1077         priv->resp_len[0] = priv->resp_len[1] = 0;
1078
1079         /* Create the event FIFO */
1080         priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1081         if (IS_ERR(priv->event_fifo)) {
1082                 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1083                 ret = -ENOMEM;
1084                 goto out;
1085         }
1086
1087 out:
1088         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1089
1090         return ret;
1091 }
1092
1093 static void lbs_free_adapter(struct lbs_private *priv)
1094 {
1095         lbs_deb_enter(LBS_DEB_MAIN);
1096
1097         lbs_free_cmd_buffer(priv);
1098         if (priv->event_fifo)
1099                 kfifo_free(priv->event_fifo);
1100         del_timer(&priv->command_timer);
1101         kfree(priv->networks);
1102         priv->networks = NULL;
1103
1104         lbs_deb_leave(LBS_DEB_MAIN);
1105 }
1106
1107 /**
1108  * @brief This function adds the card. it will probe the
1109  * card, allocate the lbs_priv and initialize the device.
1110  *
1111  *  @param card    A pointer to card
1112  *  @return        A pointer to struct lbs_private structure
1113  */
1114 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1115 {
1116         struct net_device *dev = NULL;
1117         struct lbs_private *priv = NULL;
1118
1119         lbs_deb_enter(LBS_DEB_MAIN);
1120
1121         /* Allocate an Ethernet device and register it */
1122         dev = alloc_etherdev(sizeof(struct lbs_private));
1123         if (!dev) {
1124                 lbs_pr_err("init ethX device failed\n");
1125                 goto done;
1126         }
1127         priv = dev->priv;
1128
1129         if (lbs_init_adapter(priv)) {
1130                 lbs_pr_err("failed to initialize adapter structure.\n");
1131                 goto err_init_adapter;
1132         }
1133
1134         priv->dev = dev;
1135         priv->card = card;
1136         priv->mesh_open = 0;
1137         priv->infra_open = 0;
1138
1139         /* Setup the OS Interface to our functions */
1140         dev->open = lbs_dev_open;
1141         dev->hard_start_xmit = lbs_hard_start_xmit;
1142         dev->stop = lbs_eth_stop;
1143         dev->set_mac_address = lbs_set_mac_address;
1144         dev->tx_timeout = lbs_tx_timeout;
1145         dev->get_stats = lbs_get_stats;
1146         dev->watchdog_timeo = 5 * HZ;
1147         dev->ethtool_ops = &lbs_ethtool_ops;
1148 #ifdef  WIRELESS_EXT
1149         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1150 #endif
1151         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1152         dev->set_multicast_list = lbs_set_multicast_list;
1153
1154         SET_NETDEV_DEV(dev, dmdev);
1155
1156         priv->rtap_net_dev = NULL;
1157
1158         lbs_deb_thread("Starting main thread...\n");
1159         init_waitqueue_head(&priv->waitq);
1160         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1161         if (IS_ERR(priv->main_thread)) {
1162                 lbs_deb_thread("Error creating main thread.\n");
1163                 goto err_init_adapter;
1164         }
1165
1166         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1167         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1168         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1169         INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1170         INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1171
1172         sprintf(priv->mesh_ssid, "mesh");
1173         priv->mesh_ssid_len = 4;
1174
1175         priv->wol_criteria = 0xffffffff;
1176         priv->wol_gpio = 0xff;
1177
1178         goto done;
1179
1180 err_init_adapter:
1181         lbs_free_adapter(priv);
1182         free_netdev(dev);
1183         priv = NULL;
1184
1185 done:
1186         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1187         return priv;
1188 }
1189 EXPORT_SYMBOL_GPL(lbs_add_card);
1190
1191
1192 void lbs_remove_card(struct lbs_private *priv)
1193 {
1194         struct net_device *dev = priv->dev;
1195         union iwreq_data wrqu;
1196
1197         lbs_deb_enter(LBS_DEB_MAIN);
1198
1199         lbs_remove_mesh(priv);
1200         lbs_remove_rtap(priv);
1201
1202         dev = priv->dev;
1203
1204         cancel_delayed_work_sync(&priv->scan_work);
1205         cancel_delayed_work_sync(&priv->assoc_work);
1206         cancel_work_sync(&priv->mcast_work);
1207
1208         /* worker thread destruction blocks on the in-flight command which
1209          * should have been cleared already in lbs_stop_card().
1210          */
1211         lbs_deb_main("destroying worker thread\n");
1212         destroy_workqueue(priv->work_thread);
1213         lbs_deb_main("done destroying worker thread\n");
1214
1215         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1216                 priv->psmode = LBS802_11POWERMODECAM;
1217                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1218         }
1219
1220         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1221         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1222         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1223
1224         /* Stop the thread servicing the interrupts */
1225         priv->surpriseremoved = 1;
1226         kthread_stop(priv->main_thread);
1227
1228         lbs_free_adapter(priv);
1229
1230         priv->dev = NULL;
1231         free_netdev(dev);
1232
1233         lbs_deb_leave(LBS_DEB_MAIN);
1234 }
1235 EXPORT_SYMBOL_GPL(lbs_remove_card);
1236
1237
1238 int lbs_start_card(struct lbs_private *priv)
1239 {
1240         struct net_device *dev = priv->dev;
1241         int ret = -1;
1242
1243         lbs_deb_enter(LBS_DEB_MAIN);
1244
1245         /* poke the firmware */
1246         ret = lbs_setup_firmware(priv);
1247         if (ret)
1248                 goto done;
1249
1250         /* init 802.11d */
1251         lbs_init_11d(priv);
1252
1253         if (register_netdev(dev)) {
1254                 lbs_pr_err("cannot register ethX device\n");
1255                 goto done;
1256         }
1257
1258         lbs_update_channel(priv);
1259
1260         /* 5.0.16p0 is known to NOT support any mesh */
1261         if (priv->fwrelease > 0x05001000) {
1262                 /* Enable mesh, if supported, and work out which TLV it uses.
1263                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
1264                    0x100 + 37 is the official value used in 5.110.21.pXX
1265                    but we check them in that order because 20.pXX doesn't
1266                    give an error -- it just silently fails. */
1267
1268                 /* 5.110.20.pXX firmware will fail the command if the channel
1269                    doesn't match the existing channel. But only if the TLV
1270                    is correct. If the channel is wrong, _BOTH_ versions will
1271                    give an error to 0x100+291, and allow 0x100+37 to succeed.
1272                    It's just that 5.110.20.pXX will not have done anything
1273                    useful */
1274
1275                 priv->mesh_tlv = 0x100 + 291;
1276                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1277                                     priv->curbssparams.channel)) {
1278                         priv->mesh_tlv = 0x100 + 37;
1279                         if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1280                                             priv->curbssparams.channel))
1281                                 priv->mesh_tlv = 0;
1282                 }
1283                 if (priv->mesh_tlv) {
1284                         lbs_add_mesh(priv);
1285
1286                         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1287                                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1288
1289                         /* While rtap isn't related to mesh, only mesh-enabled
1290                          * firmware implements the rtap functionality via
1291                          * CMD_802_11_MONITOR_MODE.
1292                          */
1293                         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1294                                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1295                 }
1296         }
1297
1298         lbs_debugfs_init_one(priv, dev);
1299
1300         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1301
1302         ret = 0;
1303
1304 done:
1305         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1306         return ret;
1307 }
1308 EXPORT_SYMBOL_GPL(lbs_start_card);
1309
1310
1311 void lbs_stop_card(struct lbs_private *priv)
1312 {
1313         struct net_device *dev = priv->dev;
1314         struct cmd_ctrl_node *cmdnode;
1315         unsigned long flags;
1316
1317         lbs_deb_enter(LBS_DEB_MAIN);
1318
1319         if (!priv)
1320                 goto out;
1321
1322         netif_stop_queue(priv->dev);
1323         netif_carrier_off(priv->dev);
1324
1325         lbs_debugfs_remove_one(priv);
1326         if (priv->mesh_tlv) {
1327                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1328                 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1329         }
1330
1331         /* Delete the timeout of the currently processing command */
1332         del_timer_sync(&priv->command_timer);
1333
1334         /* Flush pending command nodes */
1335         spin_lock_irqsave(&priv->driver_lock, flags);
1336         lbs_deb_main("clearing pending commands\n");
1337         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1338                 cmdnode->result = -ENOENT;
1339                 cmdnode->cmdwaitqwoken = 1;
1340                 wake_up_interruptible(&cmdnode->cmdwait_q);
1341         }
1342
1343         /* Flush the command the card is currently processing */
1344         if (priv->cur_cmd) {
1345                 lbs_deb_main("clearing current command\n");
1346                 priv->cur_cmd->result = -ENOENT;
1347                 priv->cur_cmd->cmdwaitqwoken = 1;
1348                 wake_up_interruptible(&priv->cur_cmd->cmdwait_q);
1349         }
1350         lbs_deb_main("done clearing commands\n");
1351         spin_unlock_irqrestore(&priv->driver_lock, flags);
1352
1353         unregister_netdev(dev);
1354
1355 out:
1356         lbs_deb_leave(LBS_DEB_MAIN);
1357 }
1358 EXPORT_SYMBOL_GPL(lbs_stop_card);
1359
1360
1361 /**
1362  * @brief This function adds mshX interface
1363  *
1364  *  @param priv    A pointer to the struct lbs_private structure
1365  *  @return        0 if successful, -X otherwise
1366  */
1367 static int lbs_add_mesh(struct lbs_private *priv)
1368 {
1369         struct net_device *mesh_dev = NULL;
1370         int ret = 0;
1371
1372         lbs_deb_enter(LBS_DEB_MESH);
1373
1374         /* Allocate a virtual mesh device */
1375         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1376                 lbs_deb_mesh("init mshX device failed\n");
1377                 ret = -ENOMEM;
1378                 goto done;
1379         }
1380         mesh_dev->priv = priv;
1381         priv->mesh_dev = mesh_dev;
1382
1383         mesh_dev->open = lbs_dev_open;
1384         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1385         mesh_dev->stop = lbs_mesh_stop;
1386         mesh_dev->get_stats = lbs_get_stats;
1387         mesh_dev->set_mac_address = lbs_set_mac_address;
1388         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1389         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1390                         sizeof(priv->dev->dev_addr));
1391
1392         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1393
1394 #ifdef  WIRELESS_EXT
1395         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1396 #endif
1397         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1398         mesh_dev->set_multicast_list = lbs_set_multicast_list;
1399         /* Register virtual mesh interface */
1400         ret = register_netdev(mesh_dev);
1401         if (ret) {
1402                 lbs_pr_err("cannot register mshX virtual interface\n");
1403                 goto err_free;
1404         }
1405
1406         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1407         if (ret)
1408                 goto err_unregister;
1409
1410         lbs_persist_config_init(mesh_dev);
1411
1412         /* Everything successful */
1413         ret = 0;
1414         goto done;
1415
1416 err_unregister:
1417         unregister_netdev(mesh_dev);
1418
1419 err_free:
1420         free_netdev(mesh_dev);
1421
1422 done:
1423         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1424         return ret;
1425 }
1426
1427 static void lbs_remove_mesh(struct lbs_private *priv)
1428 {
1429         struct net_device *mesh_dev;
1430
1431
1432         mesh_dev = priv->mesh_dev;
1433         if (!mesh_dev)
1434                 return;
1435
1436         lbs_deb_enter(LBS_DEB_MESH);
1437         netif_stop_queue(mesh_dev);
1438         netif_carrier_off(mesh_dev);
1439         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1440         lbs_persist_config_remove(mesh_dev);
1441         unregister_netdev(mesh_dev);
1442         priv->mesh_dev = NULL;
1443         free_netdev(mesh_dev);
1444         lbs_deb_leave(LBS_DEB_MESH);
1445 }
1446
1447 /**
1448  *  @brief This function finds the CFP in
1449  *  region_cfp_table based on region and band parameter.
1450  *
1451  *  @param region  The region code
1452  *  @param band    The band
1453  *  @param cfp_no  A pointer to CFP number
1454  *  @return        A pointer to CFP
1455  */
1456 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1457 {
1458         int i, end;
1459
1460         lbs_deb_enter(LBS_DEB_MAIN);
1461
1462         end = ARRAY_SIZE(region_cfp_table);
1463
1464         for (i = 0; i < end ; i++) {
1465                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1466                         region_cfp_table[i].region);
1467                 if (region_cfp_table[i].region == region) {
1468                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1469                         lbs_deb_leave(LBS_DEB_MAIN);
1470                         return region_cfp_table[i].cfp_BG;
1471                 }
1472         }
1473
1474         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1475         return NULL;
1476 }
1477
1478 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1479 {
1480         int ret = 0;
1481         int i = 0;
1482
1483         struct chan_freq_power *cfp;
1484         int cfp_no;
1485
1486         lbs_deb_enter(LBS_DEB_MAIN);
1487
1488         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1489
1490         cfp = lbs_get_region_cfp_table(region, &cfp_no);
1491         if (cfp != NULL) {
1492                 priv->region_channel[i].nrcfp = cfp_no;
1493                 priv->region_channel[i].CFP = cfp;
1494         } else {
1495                 lbs_deb_main("wrong region code %#x in band B/G\n",
1496                        region);
1497                 ret = -1;
1498                 goto out;
1499         }
1500         priv->region_channel[i].valid = 1;
1501         priv->region_channel[i].region = region;
1502         priv->region_channel[i].band = band;
1503         i++;
1504 out:
1505         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1506         return ret;
1507 }
1508
1509 void lbs_queue_event(struct lbs_private *priv, u32 event)
1510 {
1511         unsigned long flags;
1512
1513         lbs_deb_enter(LBS_DEB_THREAD);
1514         spin_lock_irqsave(&priv->driver_lock, flags);
1515
1516         if (priv->psstate == PS_STATE_SLEEP)
1517                 priv->psstate = PS_STATE_AWAKE;
1518
1519         __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1520
1521         wake_up_interruptible(&priv->waitq);
1522
1523         spin_unlock_irqrestore(&priv->driver_lock, flags);
1524         lbs_deb_leave(LBS_DEB_THREAD);
1525 }
1526 EXPORT_SYMBOL_GPL(lbs_queue_event);
1527
1528 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1529 {
1530         lbs_deb_enter(LBS_DEB_THREAD);
1531
1532         if (priv->psstate == PS_STATE_SLEEP)
1533                 priv->psstate = PS_STATE_AWAKE;
1534
1535         /* Swap buffers by flipping the response index */
1536         BUG_ON(resp_idx > 1);
1537         priv->resp_idx = resp_idx;
1538
1539         wake_up_interruptible(&priv->waitq);
1540
1541         lbs_deb_leave(LBS_DEB_THREAD);
1542 }
1543 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1544
1545 static int __init lbs_init_module(void)
1546 {
1547         lbs_deb_enter(LBS_DEB_MAIN);
1548         memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1549         confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1550         confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1551         confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1552         lbs_debugfs_init();
1553         lbs_deb_leave(LBS_DEB_MAIN);
1554         return 0;
1555 }
1556
1557 static void __exit lbs_exit_module(void)
1558 {
1559         lbs_deb_enter(LBS_DEB_MAIN);
1560         lbs_debugfs_remove();
1561         lbs_deb_leave(LBS_DEB_MAIN);
1562 }
1563
1564 /*
1565  * rtap interface support fuctions
1566  */
1567
1568 static int lbs_rtap_open(struct net_device *dev)
1569 {
1570         /* Yes, _stop_ the queue. Because we don't support injection */
1571         lbs_deb_enter(LBS_DEB_MAIN);
1572         netif_carrier_off(dev);
1573         netif_stop_queue(dev);
1574         lbs_deb_leave(LBS_DEB_LEAVE);
1575         return 0;
1576 }
1577
1578 static int lbs_rtap_stop(struct net_device *dev)
1579 {
1580         lbs_deb_enter(LBS_DEB_MAIN);
1581         lbs_deb_leave(LBS_DEB_MAIN);
1582         return 0;
1583 }
1584
1585 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1586 {
1587         netif_stop_queue(dev);
1588         return NETDEV_TX_BUSY;
1589 }
1590
1591 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1592 {
1593         struct lbs_private *priv = dev->priv;
1594         lbs_deb_enter(LBS_DEB_NET);
1595         return &priv->stats;
1596 }
1597
1598
1599 static void lbs_remove_rtap(struct lbs_private *priv)
1600 {
1601         lbs_deb_enter(LBS_DEB_MAIN);
1602         if (priv->rtap_net_dev == NULL)
1603                 goto out;
1604         unregister_netdev(priv->rtap_net_dev);
1605         free_netdev(priv->rtap_net_dev);
1606         priv->rtap_net_dev = NULL;
1607 out:
1608         lbs_deb_leave(LBS_DEB_MAIN);
1609 }
1610
1611 static int lbs_add_rtap(struct lbs_private *priv)
1612 {
1613         int ret = 0;
1614         struct net_device *rtap_dev;
1615
1616         lbs_deb_enter(LBS_DEB_MAIN);
1617         if (priv->rtap_net_dev) {
1618                 ret = -EPERM;
1619                 goto out;
1620         }
1621
1622         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1623         if (rtap_dev == NULL) {
1624                 ret = -ENOMEM;
1625                 goto out;
1626         }
1627
1628         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1629         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1630         rtap_dev->open = lbs_rtap_open;
1631         rtap_dev->stop = lbs_rtap_stop;
1632         rtap_dev->get_stats = lbs_rtap_get_stats;
1633         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1634         rtap_dev->priv = priv;
1635         SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1636
1637         ret = register_netdev(rtap_dev);
1638         if (ret) {
1639                 free_netdev(rtap_dev);
1640                 goto out;
1641         }
1642         priv->rtap_net_dev = rtap_dev;
1643
1644 out:
1645         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1646         return ret;
1647 }
1648
1649 #ifndef CONFIG_IEEE80211
1650 const char *escape_essid(const char *essid, u8 essid_len)
1651 {
1652         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1653         const char *s = essid;
1654         char *d = escaped;
1655
1656         if (ieee80211_is_empty_essid(essid, essid_len)) {
1657                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1658                 return escaped;
1659         }
1660
1661         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1662         while (essid_len--) {
1663                 if (*s == '\0') {
1664                         *d++ = '\\';
1665                         *d++ = '0';
1666                         s++;
1667                 } else {
1668                         *d++ = *s++;
1669                 }
1670         }
1671         *d = '\0';
1672         return escaped;
1673 }
1674 #endif
1675
1676 module_init(lbs_init_module);
1677 module_exit(lbs_exit_module);
1678
1679 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1680 MODULE_AUTHOR("Marvell International Ltd.");
1681 MODULE_LICENSE("GPL");