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/freezer.h>
  10 #include <linux/etherdevice.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/if_arp.h>
  13 #include <linux/kthread.h>
  14
  15 #include <net/iw_handler.h>
  16 #include <net/ieee80211.h>
  17
  18 #include "host.h"
  19 #include "decl.h"
  20 #include "dev.h"
  21 #include "wext.h"
  22 #include "debugfs.h"
  23 #include "assoc.h"
  24 #include "join.h"
  25 #include "cmd.h"
  26
  27 #define DRIVER_RELEASE_VERSION "323.p0"
  28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  29 #ifdef  DEBUG
  30     "-dbg"
  31 #endif
  32     "";
  33
  34
  35 /* Module parameters */
  36 unsigned int lbs_debug;
  37 EXPORT_SYMBOL_GPL(lbs_debug);
  38 module_param_named(libertas_debug, lbs_debug, int, 0644);
  39
  40
  41 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  42 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  43 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  44 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  45 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  46
  47 /* Format { channel, frequency (MHz), maxtxpower } */
  48 /* band: 'B/G', region: USA FCC/Canada IC */
  49 static struct chan_freq_power channel_freq_power_US_BG[] = {
  50         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  51         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  52         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  53         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  54         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  55         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  56         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  57         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  58         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  59         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  60         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  61 };
  62
  63 /* band: 'B/G', region: Europe ETSI */
  64 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  65         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  66         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  67         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  68         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  69         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  70         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  71         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  72         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  73         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  74         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  75         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  76         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  77         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  78 };
  79
  80 /* band: 'B/G', region: Spain */
  81 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  82         {10, 2457, LBS_TX_PWR_DEFAULT},
  83         {11, 2462, LBS_TX_PWR_DEFAULT}
  84 };
  85
  86 /* band: 'B/G', region: France */
  87 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  88         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  89         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  90         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  91         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  92 };
  93
  94 /* band: 'B/G', region: Japan */
  95 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  96         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
  97         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
  98         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
  99         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
 100         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 101         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 102         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 103         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 104         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 105         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 106         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 107         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 108         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 109         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 110 };
 111
 112 /**
 113  * the structure for channel, frequency and power
 114  */
 115 struct region_cfp_table {
 116         u8 region;
 117         struct chan_freq_power *cfp_BG;
 118         int cfp_no_BG;
 119 };
 120
 121 /**
 122  * the structure for the mapping between region and CFP
 123  */
 124 static struct region_cfp_table region_cfp_table[] = {
 125         {0x10,                  /*US FCC */
 126          channel_freq_power_US_BG,
 127          ARRAY_SIZE(channel_freq_power_US_BG),
 128          }
 129         ,
 130         {0x20,                  /*CANADA IC */
 131          channel_freq_power_US_BG,
 132          ARRAY_SIZE(channel_freq_power_US_BG),
 133          }
 134         ,
 135         {0x30, /*EU*/ channel_freq_power_EU_BG,
 136          ARRAY_SIZE(channel_freq_power_EU_BG),
 137          }
 138         ,
 139         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 140          ARRAY_SIZE(channel_freq_power_SPN_BG),
 141          }
 142         ,
 143         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 144          ARRAY_SIZE(channel_freq_power_FR_BG),
 145          }
 146         ,
 147         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 148          ARRAY_SIZE(channel_freq_power_JPN_BG),
 149          }
 150         ,
 151 /*Add new region here */
 152 };
 153
 154 /**
 155  * the table to keep region code
 156  */
 157 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 158     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 159
 160 /**
 161  * 802.11b/g supported bitrates (in 500Kb/s units)
 162  */
 163 u8 lbs_bg_rates[MAX_RATES] =
 164     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 165 0x00, 0x00 };
 166
 167 /**
 168  * FW rate table.  FW refers to rates by their index in this table, not by the
 169  * rate value itself.  Values of 0x00 are
 170  * reserved positions.
 171  */
 172 static u8 fw_data_rates[MAX_RATES] =
 173     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 174       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 175 };
 176
 177 /**
 178  *  @brief use index to get the data rate
 179  *
 180  *  @param idx                The index of data rate
 181  *  @return                     data rate or 0
 182  */
 183 u32 lbs_fw_index_to_data_rate(u8 idx)
 184 {
 185         if (idx >= sizeof(fw_data_rates))
 186                 idx = 0;
 187         return fw_data_rates[idx];
 188 }
 189
 190 /**
 191  *  @brief use rate to get the index
 192  *
 193  *  @param rate                 data rate
 194  *  @return                     index or 0
 195  */
 196 u8 lbs_data_rate_to_fw_index(u32 rate)
 197 {
 198         u8 i;
 199
 200         if (!rate)
 201                 return 0;
 202
 203         for (i = 0; i < sizeof(fw_data_rates); i++) {
 204                 if (rate == fw_data_rates[i])
 205                         return i;
 206         }
 207         return 0;
 208 }
 209
 210 /**
 211  * Attributes exported through sysfs
 212  */
 213
 214 /**
 215  * @brief Get function for sysfs attribute anycast_mask
 216  */
 217 static ssize_t lbs_anycast_get(struct device *dev,
 218                 struct device_attribute *attr, char * buf)
 219 {
 220         struct cmd_ds_mesh_access mesh_access;
 221
 222         memset(&mesh_access, 0, sizeof(mesh_access));
 223         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 224                         CMD_MESH_ACCESS,
 225                         CMD_ACT_MESH_GET_ANYCAST,
 226                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 227
 228         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 229 }
 230
 231 /**
 232  * @brief Set function for sysfs attribute anycast_mask
 233  */
 234 static ssize_t lbs_anycast_set(struct device *dev,
 235                 struct device_attribute *attr, const char * buf, size_t count)
 236 {
 237         struct cmd_ds_mesh_access mesh_access;
 238         uint32_t datum;
 239
 240         memset(&mesh_access, 0, sizeof(mesh_access));
 241         sscanf(buf, "%x", &datum);
 242         mesh_access.data[0] = cpu_to_le32(datum);
 243
 244         lbs_prepare_and_send_command((to_net_dev(dev))->priv,
 245                         CMD_MESH_ACCESS,
 246                         CMD_ACT_MESH_SET_ANYCAST,
 247                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 248         return strlen(buf);
 249 }
 250
 251 int lbs_add_rtap(struct lbs_private *priv);
 252 void lbs_remove_rtap(struct lbs_private *priv);
 253
 254 /**
 255  * Get function for sysfs attribute rtap
 256  */
 257 static ssize_t lbs_rtap_get(struct device *dev,
 258                 struct device_attribute *attr, char * buf)
 259 {
 260         struct lbs_private *priv = to_net_dev(dev)->priv;
 261         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 262 }
 263
 264 /**
 265  *  Set function for sysfs attribute rtap
 266  */
 267 static ssize_t lbs_rtap_set(struct device *dev,
 268                 struct device_attribute *attr, const char * buf, size_t count)
 269 {
 270         int monitor_mode;
 271         struct lbs_private *priv = to_net_dev(dev)->priv;
 272
 273         sscanf(buf, "%x", &monitor_mode);
 274         if (monitor_mode != LBS_MONITOR_OFF) {
 275                 if(priv->monitormode == monitor_mode)
 276                         return strlen(buf);
 277                 if (priv->monitormode == LBS_MONITOR_OFF) {
 278                         if (priv->infra_open || priv->mesh_open)
 279                                 return -EBUSY;
 280                         if (priv->mode == IW_MODE_INFRA)
 281                                 lbs_send_deauthentication(priv);
 282                         else if (priv->mode == IW_MODE_ADHOC)
 283                                 lbs_stop_adhoc_network(priv);
 284                         lbs_add_rtap(priv);
 285                 }
 286                 priv->monitormode = monitor_mode;
 287         }
 288
 289         else {
 290                 if (priv->monitormode == LBS_MONITOR_OFF)
 291                         return strlen(buf);
 292                 priv->monitormode = LBS_MONITOR_OFF;
 293                 lbs_remove_rtap(priv);
 294
 295                 if (priv->currenttxskb) {
 296                         dev_kfree_skb_any(priv->currenttxskb);
 297                         priv->currenttxskb = NULL;
 298                 }
 299
 300                 /* Wake queues, command thread, etc. */
 301                 lbs_host_to_card_done(priv);
 302         }
 303
 304         lbs_prepare_and_send_command(priv,
 305                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 306                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 307         return strlen(buf);
 308 }
 309
 310 /**
 311  * lbs_rtap attribute to be exported per mshX interface
 312  * through sysfs (/sys/class/net/mshX/libertas-rtap)
 313  */
 314 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
 315                 lbs_rtap_set );
 316
 317 /**
 318  * anycast_mask attribute to be exported per mshX interface
 319  * through sysfs (/sys/class/net/mshX/anycast_mask)
 320  */
 321 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 322
 323 static ssize_t lbs_autostart_enabled_get(struct device *dev,
 324                 struct device_attribute *attr, char * buf)
 325 {
 326         struct cmd_ds_mesh_access mesh_access;
 327
 328         memset(&mesh_access, 0, sizeof(mesh_access));
 329         lbs_prepare_and_send_command(to_net_dev(dev)->priv,
 330                         CMD_MESH_ACCESS,
 331                         CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
 332                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 333
 334         return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
 335 }
 336
 337 static ssize_t lbs_autostart_enabled_set(struct device *dev,
 338                 struct device_attribute *attr, const char * buf, size_t count)
 339 {
 340         struct cmd_ds_mesh_access mesh_access;
 341         uint32_t datum;
 342         struct lbs_private *priv = (to_net_dev(dev))->priv;
 343         int ret;
 344
 345         memset(&mesh_access, 0, sizeof(mesh_access));
 346         sscanf(buf, "%d", &datum);
 347         mesh_access.data[0] = cpu_to_le32(datum);
 348
 349         ret = lbs_prepare_and_send_command(priv,
 350                         CMD_MESH_ACCESS,
 351                         CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 352                         CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 353         if (ret == 0)
 354                 priv->mesh_autostart_enabled = datum ? 1 : 0;
 355
 356         return strlen(buf);
 357 }
 358
 359 static DEVICE_ATTR(autostart_enabled, 0644,
 360                 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
 361
 362 static struct attribute *lbs_mesh_sysfs_entries[] = {
 363         &dev_attr_anycast_mask.attr,
 364         &dev_attr_autostart_enabled.attr,
 365         NULL,
 366 };
 367
 368 static struct attribute_group lbs_mesh_attr_group = {
 369         .attrs = lbs_mesh_sysfs_entries,
 370 };
 371
 372 /**
 373  *  @brief This function opens the ethX or mshX interface
 374  *
 375  *  @param dev     A pointer to net_device structure
 376  *  @return        0 or -EBUSY if monitor mode active
 377  */
 378 static int lbs_dev_open(struct net_device *dev)
 379 {
 380         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 381         int ret = 0;
 382
 383         spin_lock_irq(&priv->driver_lock);
 384
 385         if (priv->monitormode != LBS_MONITOR_OFF) {
 386                 ret = -EBUSY;
 387                 goto out;
 388         }
 389
 390         if (dev == priv->mesh_dev) {
 391                 priv->mesh_open = 1;
 392                 priv->mesh_connect_status = LBS_CONNECTED;
 393                 netif_carrier_on(dev);
 394         } else {
 395                 priv->infra_open = 1;
 396
 397                 if (priv->connect_status == LBS_CONNECTED)
 398                         netif_carrier_on(dev);
 399                 else
 400                         netif_carrier_off(dev);
 401         }
 402
 403         if (!priv->tx_pending_len)
 404                 netif_wake_queue(dev);
 405  out:
 406
 407         spin_unlock_irq(&priv->driver_lock);
 408         return ret;
 409 }
 410
 411 /**
 412  *  @brief This function closes the mshX interface
 413  *
 414  *  @param dev     A pointer to net_device structure
 415  *  @return        0
 416  */
 417 static int lbs_mesh_stop(struct net_device *dev)
 418 {
 419         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 420
 421         spin_lock_irq(&priv->driver_lock);
 422
 423         priv->mesh_open = 0;
 424         priv->mesh_connect_status = LBS_DISCONNECTED;
 425
 426         netif_stop_queue(dev);
 427         netif_carrier_off(dev);
 428
 429         spin_unlock_irq(&priv->driver_lock);
 430         return 0;
 431 }
 432
 433 /**
 434  *  @brief This function closes the ethX interface
 435  *
 436  *  @param dev     A pointer to net_device structure
 437  *  @return        0
 438  */
 439 static int lbs_eth_stop(struct net_device *dev)
 440 {
 441         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 442
 443         spin_lock_irq(&priv->driver_lock);
 444
 445         priv->infra_open = 0;
 446
 447         netif_stop_queue(dev);
 448
 449         spin_unlock_irq(&priv->driver_lock);
 450         return 0;
 451 }
 452
 453 static void lbs_tx_timeout(struct net_device *dev)
 454 {
 455         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 456
 457         lbs_deb_enter(LBS_DEB_TX);
 458
 459         lbs_pr_err("tx watch dog timeout\n");
 460
 461         dev->trans_start = jiffies;
 462
 463         if (priv->currenttxskb) {
 464                 priv->eventcause = 0x01000000;
 465                 lbs_send_tx_feedback(priv);
 466         }
 467         /* XX: Shouldn't we also call into the hw-specific driver
 468            to kick it somehow? */
 469         lbs_host_to_card_done(priv);
 470
 471         lbs_deb_leave(LBS_DEB_TX);
 472 }
 473
 474 void lbs_host_to_card_done(struct lbs_private *priv)
 475 {
 476         unsigned long flags;
 477
 478         spin_lock_irqsave(&priv->driver_lock, flags);
 479
 480         priv->dnld_sent = DNLD_RES_RECEIVED;
 481
 482         /* Wake main thread if commands are pending */
 483         if (!priv->cur_cmd)
 484                 wake_up_interruptible(&priv->waitq);
 485
 486         /* Don't wake netif queues if we're in monitor mode and
 487            a TX packet is already pending, or if there are commands
 488            queued to be sent. */
 489         if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
 490                 if (priv->dev && priv->connect_status == LBS_CONNECTED)
 491                         netif_wake_queue(priv->dev);
 492
 493                 if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
 494                         netif_wake_queue(priv->mesh_dev);
 495         }
 496         spin_unlock_irqrestore(&priv->driver_lock, flags);
 497 }
 498 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 499
 500 /**
 501  *  @brief This function returns the network statistics
 502  *
 503  *  @param dev     A pointer to struct lbs_private structure
 504  *  @return        A pointer to net_device_stats structure
 505  */
 506 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 507 {
 508         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 509
 510         return &priv->stats;
 511 }
 512
 513 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 514 {
 515         int ret = 0;
 516         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 517         struct sockaddr *phwaddr = addr;
 518
 519         lbs_deb_enter(LBS_DEB_NET);
 520
 521         /* In case it was called from the mesh device */
 522         dev = priv->dev ;
 523
 524         memset(priv->current_addr, 0, ETH_ALEN);
 525
 526         /* dev->dev_addr is 8 bytes */
 527         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 528
 529         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 530         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 531
 532         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 533                                     CMD_ACT_SET,
 534                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 535
 536         if (ret) {
 537                 lbs_deb_net("set MAC address failed\n");
 538                 ret = -1;
 539                 goto done;
 540         }
 541
 542         lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
 543         memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
 544         if (priv->mesh_dev)
 545                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 546
 547 done:
 548         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 549         return ret;
 550 }
 551
 552 static int lbs_copy_multicast_address(struct lbs_private *priv,
 553                                      struct net_device *dev)
 554 {
 555         int i = 0;
 556         struct dev_mc_list *mcptr = dev->mc_list;
 557
 558         for (i = 0; i < dev->mc_count; i++) {
 559                 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 560                 mcptr = mcptr->next;
 561         }
 562
 563         return i;
 564
 565 }
 566
 567 static void lbs_set_multicast_list(struct net_device *dev)
 568 {
 569         struct lbs_private *priv = dev->priv;
 570         int oldpacketfilter;
 571         DECLARE_MAC_BUF(mac);
 572
 573         lbs_deb_enter(LBS_DEB_NET);
 574
 575         oldpacketfilter = priv->currentpacketfilter;
 576
 577         if (dev->flags & IFF_PROMISC) {
 578                 lbs_deb_net("enable promiscuous mode\n");
 579                 priv->currentpacketfilter |=
 580                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 581                 priv->currentpacketfilter &=
 582                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 583                       CMD_ACT_MAC_MULTICAST_ENABLE);
 584         } else {
 585                 /* Multicast */
 586                 priv->currentpacketfilter &=
 587                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 588
 589                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 590                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 591                         lbs_deb_net( "enabling all multicast\n");
 592                         priv->currentpacketfilter |=
 593                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 594                         priv->currentpacketfilter &=
 595                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 596                 } else {
 597                         priv->currentpacketfilter &=
 598                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 599
 600                         if (!dev->mc_count) {
 601                                 lbs_deb_net("no multicast addresses, "
 602                                        "disabling multicast\n");
 603                                 priv->currentpacketfilter &=
 604                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 605                         } else {
 606                                 int i;
 607
 608                                 priv->currentpacketfilter |=
 609                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 610
 611                                 priv->nr_of_multicastmacaddr =
 612                                     lbs_copy_multicast_address(priv, dev);
 613
 614                                 lbs_deb_net("multicast addresses: %d\n",
 615                                        dev->mc_count);
 616
 617                                 for (i = 0; i < dev->mc_count; i++) {
 618                                         lbs_deb_net("Multicast address %d:%s\n",
 619                                                i, print_mac(mac,
 620                                                priv->multicastlist[i]));
 621                                 }
 622                                 /* send multicast addresses to firmware */
 623                                 lbs_prepare_and_send_command(priv,
 624                                                       CMD_MAC_MULTICAST_ADR,
 625                                                       CMD_ACT_SET, 0, 0,
 626                                                       NULL);
 627                         }
 628                 }
 629         }
 630
 631         if (priv->currentpacketfilter != oldpacketfilter) {
 632                 lbs_set_mac_packet_filter(priv);
 633         }
 634
 635         lbs_deb_leave(LBS_DEB_NET);
 636 }
 637
 638 /**
 639  *  @brief This function handles the major jobs in the LBS driver.
 640  *  It handles all events generated by firmware, RX data received
 641  *  from firmware and TX data sent from kernel.
 642  *
 643  *  @param data    A pointer to lbs_thread structure
 644  *  @return        0
 645  */
 646 static int lbs_thread(void *data)
 647 {
 648         struct net_device *dev = data;
 649         struct lbs_private *priv = dev->priv;
 650         wait_queue_t wait;
 651         u8 ireg = 0;
 652
 653         lbs_deb_enter(LBS_DEB_THREAD);
 654
 655         init_waitqueue_entry(&wait, current);
 656
 657         set_freezable();
 658
 659         for (;;) {
 660                 int shouldsleep;
 661
 662                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 663                                 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 664
 665                 add_wait_queue(&priv->waitq, &wait);
 666                 set_current_state(TASK_INTERRUPTIBLE);
 667                 spin_lock_irq(&priv->driver_lock);
 668
 669                 if (priv->surpriseremoved)
 670                         shouldsleep = 0;        /* Bye */
 671                 else if (priv->psstate == PS_STATE_SLEEP)
 672                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 673                 else if (priv->intcounter)
 674                         shouldsleep = 0;        /* Interrupt pending. Deal with it now */
 675                 else if (!priv->fw_ready)
 676                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 677                 else if (priv->dnld_sent)
 678                         shouldsleep = 1;        /* Something is en route to the device already */
 679                 else if (priv->tx_pending_len > 0)
 680                         shouldsleep = 0;        /* We've a packet to send */
 681                 else if (priv->cur_cmd)
 682                         shouldsleep = 1;        /* Can't send a command; one already running */
 683                 else if (!list_empty(&priv->cmdpendingq))
 684                         shouldsleep = 0;        /* We have a command to send */
 685                 else
 686                         shouldsleep = 1;        /* No command */
 687
 688                 if (shouldsleep) {
 689                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 690                                        priv->connect_status, priv->intcounter,
 691                                        priv->psmode, priv->psstate);
 692                         spin_unlock_irq(&priv->driver_lock);
 693                         schedule();
 694                 } else
 695                         spin_unlock_irq(&priv->driver_lock);
 696
 697                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 698                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 699
 700                 set_current_state(TASK_RUNNING);
 701                 remove_wait_queue(&priv->waitq, &wait);
 702                 try_to_freeze();
 703
 704                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 705                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 706
 707                 if (kthread_should_stop() || priv->surpriseremoved) {
 708                         lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
 709                                        priv->surpriseremoved);
 710                         break;
 711                 }
 712
 713
 714                 spin_lock_irq(&priv->driver_lock);
 715
 716                 if (priv->intcounter) {
 717                         u8 int_status;
 718
 719                         priv->intcounter = 0;
 720                         int_status = priv->hw_get_int_status(priv, &ireg);
 721
 722                         if (int_status) {
 723                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 724                                 spin_unlock_irq(&priv->driver_lock);
 725                                 continue;
 726                         }
 727                         priv->hisregcpy |= ireg;
 728                 }
 729
 730                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 731                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 732
 733                 /* command response? */
 734                 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 735                         lbs_deb_thread("main-thread: cmd response ready\n");
 736
 737                         priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 738                         spin_unlock_irq(&priv->driver_lock);
 739                         lbs_process_rx_command(priv);
 740                         spin_lock_irq(&priv->driver_lock);
 741                 }
 742
 743                 /* Any Card Event */
 744                 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
 745                         lbs_deb_thread("main-thread: Card Event Activity\n");
 746
 747                         priv->hisregcpy &= ~MRVDRV_CARDEVENT;
 748
 749                         if (priv->hw_read_event_cause(priv)) {
 750                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 751                                 spin_unlock_irq(&priv->driver_lock);
 752                                 continue;
 753                         }
 754                         spin_unlock_irq(&priv->driver_lock);
 755                         lbs_process_event(priv);
 756                 } else
 757                         spin_unlock_irq(&priv->driver_lock);
 758
 759                 if (!priv->fw_ready)
 760                         continue;
 761
 762                 /* Check if we need to confirm Sleep Request received previously */
 763                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 764                     !priv->dnld_sent && !priv->cur_cmd) {
 765                         if (priv->connect_status == LBS_CONNECTED) {
 766                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 767                                                priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
 768
 769                                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 770                         } else {
 771                                 /* workaround for firmware sending
 772                                  * deauth/linkloss event immediately
 773                                  * after sleep request; remove this
 774                                  * after firmware fixes it
 775                                  */
 776                                 priv->psstate = PS_STATE_AWAKE;
 777                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 778                         }
 779                 }
 780
 781                 /* The PS state is changed during processing of Sleep Request
 782                  * event above
 783                  */
 784                 if ((priv->psstate == PS_STATE_SLEEP) ||
 785                     (priv->psstate == PS_STATE_PRE_SLEEP))
 786                         continue;
 787
 788                 /* Execute the next command */
 789                 if (!priv->dnld_sent && !priv->cur_cmd)
 790                         lbs_execute_next_command(priv);
 791
 792                 /* Wake-up command waiters which can't sleep in
 793                  * lbs_prepare_and_send_command
 794                  */
 795                 if (!list_empty(&priv->cmdpendingq))
 796                         wake_up_all(&priv->cmd_pending);
 797
 798                 spin_lock_irq(&priv->driver_lock);
 799                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 800                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 801                                                         priv->tx_pending_buf,
 802                                                         priv->tx_pending_len);
 803                         if (ret) {
 804                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 805                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 806                         }
 807                         priv->tx_pending_len = 0;
 808                         if (!priv->currenttxskb) {
 809                                 /* We can wake the queues immediately if we aren't
 810                                    waiting for TX feedback */
 811                                 if (priv->connect_status == LBS_CONNECTED)
 812                                         netif_wake_queue(priv->dev);
 813                                 if (priv->mesh_dev &&
 814                                     priv->mesh_connect_status == LBS_CONNECTED)
 815                                         netif_wake_queue(priv->mesh_dev);
 816                         }
 817                 }
 818                 spin_unlock_irq(&priv->driver_lock);
 819         }
 820
 821         del_timer(&priv->command_timer);
 822         wake_up_all(&priv->cmd_pending);
 823
 824         lbs_deb_leave(LBS_DEB_THREAD);
 825         return 0;
 826 }
 827
 828 /**
 829  *  @brief This function downloads firmware image, gets
 830  *  HW spec from firmware and set basic parameters to
 831  *  firmware.
 832  *
 833  *  @param priv    A pointer to struct lbs_private structure
 834  *  @return        0 or -1
 835  */
 836 static int lbs_setup_firmware(struct lbs_private *priv)
 837 {
 838         int ret = -1;
 839         struct cmd_ds_mesh_access mesh_access;
 840
 841         lbs_deb_enter(LBS_DEB_FW);
 842
 843         /*
 844          * Read MAC address from HW
 845          */
 846         memset(priv->current_addr, 0xff, ETH_ALEN);
 847         ret = lbs_update_hw_spec(priv);
 848         if (ret) {
 849                 ret = -1;
 850                 goto done;
 851         }
 852
 853         lbs_set_mac_packet_filter(priv);
 854
 855         /* Get the supported Data rates */
 856         ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
 857                                     CMD_ACT_GET_TX_RATE,
 858                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 859
 860         if (ret) {
 861                 ret = -1;
 862                 goto done;
 863         }
 864
 865         /* Disable mesh autostart */
 866         if (priv->mesh_dev) {
 867                 memset(&mesh_access, 0, sizeof(mesh_access));
 868                 mesh_access.data[0] = cpu_to_le32(0);
 869                 ret = lbs_prepare_and_send_command(priv,
 870                                 CMD_MESH_ACCESS,
 871                                 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
 872                                 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
 873                 if (ret) {
 874                         ret = -1;
 875                         goto done;
 876                 }
 877                 priv->mesh_autostart_enabled = 0;
 878         }
 879
 880         ret = 0;
 881 done:
 882         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 883         return ret;
 884 }
 885
 886 /**
 887  *  This function handles the timeout of command sending.
 888  *  It will re-send the same command again.
 889  */
 890 static void command_timer_fn(unsigned long data)
 891 {
 892         struct lbs_private *priv = (struct lbs_private *)data;
 893         struct cmd_ctrl_node *ptempnode;
 894         struct cmd_ds_command *cmd;
 895         unsigned long flags;
 896
 897         ptempnode = priv->cur_cmd;
 898         if (ptempnode == NULL) {
 899                 lbs_deb_fw("ptempnode empty\n");
 900                 return;
 901         }
 902
 903         cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
 904         if (!cmd) {
 905                 lbs_deb_fw("cmd is NULL\n");
 906                 return;
 907         }
 908
 909         lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
 910
 911         if (!priv->fw_ready)
 912                 return;
 913
 914         spin_lock_irqsave(&priv->driver_lock, flags);
 915         priv->cur_cmd = NULL;
 916         spin_unlock_irqrestore(&priv->driver_lock, flags);
 917
 918         lbs_deb_fw("re-sending same command because of timeout\n");
 919         lbs_queue_cmd(priv, ptempnode, 0);
 920
 921         wake_up_interruptible(&priv->waitq);
 922
 923         return;
 924 }
 925
 926 static int lbs_init_adapter(struct lbs_private *priv)
 927 {
 928         size_t bufsize;
 929         int i, ret = 0;
 930
 931         /* Allocate buffer to store the BSSID list */
 932         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
 933         priv->networks = kzalloc(bufsize, GFP_KERNEL);
 934         if (!priv->networks) {
 935                 lbs_pr_err("Out of memory allocating beacons\n");
 936                 ret = -1;
 937                 goto out;
 938         }
 939
 940         /* Initialize scan result lists */
 941         INIT_LIST_HEAD(&priv->network_free_list);
 942         INIT_LIST_HEAD(&priv->network_list);
 943         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
 944                 list_add_tail(&priv->networks[i].list,
 945                               &priv->network_free_list);
 946         }
 947
 948         priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
 949         priv->lbs_ps_confirm_sleep.command =
 950             cpu_to_le16(CMD_802_11_PS_MODE);
 951         priv->lbs_ps_confirm_sleep.size =
 952             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
 953         priv->lbs_ps_confirm_sleep.action =
 954             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
 955
 956         memset(priv->current_addr, 0xff, ETH_ALEN);
 957
 958         priv->connect_status = LBS_DISCONNECTED;
 959         priv->mesh_connect_status = LBS_DISCONNECTED;
 960         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
 961         priv->mode = IW_MODE_INFRA;
 962         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
 963         priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
 964         priv->radioon = RADIO_ON;
 965         priv->auto_rate = 1;
 966         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
 967         priv->psmode = LBS802_11POWERMODECAM;
 968         priv->psstate = PS_STATE_FULL_POWER;
 969
 970         mutex_init(&priv->lock);
 971
 972         setup_timer(&priv->command_timer, command_timer_fn,
 973                     (unsigned long)priv);
 974
 975         INIT_LIST_HEAD(&priv->cmdfreeq);
 976         INIT_LIST_HEAD(&priv->cmdpendingq);
 977
 978         spin_lock_init(&priv->driver_lock);
 979         init_waitqueue_head(&priv->cmd_pending);
 980
 981         /* Allocate the command buffers */
 982         if (lbs_allocate_cmd_buffer(priv)) {
 983                 lbs_pr_err("Out of memory allocating command buffers\n");
 984                 ret = -1;
 985         }
 986
 987 out:
 988         return ret;
 989 }
 990
 991 static void lbs_free_adapter(struct lbs_private *priv)
 992 {
 993         lbs_deb_fw("free command buffer\n");
 994         lbs_free_cmd_buffer(priv);
 995
 996         lbs_deb_fw("free command_timer\n");
 997         del_timer(&priv->command_timer);
 998
 999         lbs_deb_fw("free scan results table\n");
1000         kfree(priv->networks);
1001         priv->networks = NULL;
1002 }
1003
1004 /**
1005  * @brief This function adds the card. it will probe the
1006  * card, allocate the lbs_priv and initialize the device.
1007  *
1008  *  @param card    A pointer to card
1009  *  @return        A pointer to struct lbs_private structure
1010  */
1011 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1012 {
1013         struct net_device *dev = NULL;
1014         struct lbs_private *priv = NULL;
1015
1016         lbs_deb_enter(LBS_DEB_NET);
1017
1018         /* Allocate an Ethernet device and register it */
1019         dev = alloc_etherdev(sizeof(struct lbs_private));
1020         if (!dev) {
1021                 lbs_pr_err("init ethX device failed\n");
1022                 goto done;
1023         }
1024         priv = dev->priv;
1025
1026         if (lbs_init_adapter(priv)) {
1027                 lbs_pr_err("failed to initialize adapter structure.\n");
1028                 goto err_init_adapter;
1029         }
1030
1031         priv->dev = dev;
1032         priv->card = card;
1033         priv->mesh_open = 0;
1034         priv->infra_open = 0;
1035
1036         /* Setup the OS Interface to our functions */
1037         dev->open = lbs_dev_open;
1038         dev->hard_start_xmit = lbs_hard_start_xmit;
1039         dev->stop = lbs_eth_stop;
1040         dev->set_mac_address = lbs_set_mac_address;
1041         dev->tx_timeout = lbs_tx_timeout;
1042         dev->get_stats = lbs_get_stats;
1043         dev->watchdog_timeo = 5 * HZ;
1044         dev->ethtool_ops = &lbs_ethtool_ops;
1045 #ifdef  WIRELESS_EXT
1046         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1047 #endif
1048         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1049         dev->set_multicast_list = lbs_set_multicast_list;
1050
1051         SET_NETDEV_DEV(dev, dmdev);
1052
1053         priv->rtap_net_dev = NULL;
1054
1055         lbs_deb_thread("Starting main thread...\n");
1056         init_waitqueue_head(&priv->waitq);
1057         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1058         if (IS_ERR(priv->main_thread)) {
1059                 lbs_deb_thread("Error creating main thread.\n");
1060                 goto err_init_adapter;
1061         }
1062
1063         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1064         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1065         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1066         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1067
1068         goto done;
1069
1070 err_init_adapter:
1071         lbs_free_adapter(priv);
1072         free_netdev(dev);
1073         priv = NULL;
1074
1075 done:
1076         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1077         return priv;
1078 }
1079 EXPORT_SYMBOL_GPL(lbs_add_card);
1080
1081
1082 int lbs_remove_card(struct lbs_private *priv)
1083 {
1084         struct net_device *dev = priv->dev;
1085         union iwreq_data wrqu;
1086
1087         lbs_deb_enter(LBS_DEB_MAIN);
1088
1089         lbs_remove_rtap(priv);
1090
1091         dev = priv->dev;
1092         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1093
1094         cancel_delayed_work(&priv->scan_work);
1095         cancel_delayed_work(&priv->assoc_work);
1096         destroy_workqueue(priv->work_thread);
1097
1098         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1099                 priv->psmode = LBS802_11POWERMODECAM;
1100                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1101         }
1102
1103         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1104         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1105         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1106
1107         /* Stop the thread servicing the interrupts */
1108         priv->surpriseremoved = 1;
1109         kthread_stop(priv->main_thread);
1110
1111         lbs_free_adapter(priv);
1112
1113         priv->dev = NULL;
1114         free_netdev(dev);
1115
1116         lbs_deb_leave(LBS_DEB_MAIN);
1117         return 0;
1118 }
1119 EXPORT_SYMBOL_GPL(lbs_remove_card);
1120
1121
1122 int lbs_start_card(struct lbs_private *priv)
1123 {
1124         struct net_device *dev = priv->dev;
1125         int ret = -1;
1126
1127         lbs_deb_enter(LBS_DEB_MAIN);
1128
1129         /* poke the firmware */
1130         ret = lbs_setup_firmware(priv);
1131         if (ret)
1132                 goto done;
1133
1134         /* init 802.11d */
1135         lbs_init_11d(priv);
1136
1137         if (register_netdev(dev)) {
1138                 lbs_pr_err("cannot register ethX device\n");
1139                 goto done;
1140         }
1141         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1142                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1143
1144         lbs_debugfs_init_one(priv, dev);
1145
1146         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1147
1148         ret = 0;
1149
1150 done:
1151         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1152         return ret;
1153 }
1154 EXPORT_SYMBOL_GPL(lbs_start_card);
1155
1156
1157 int lbs_stop_card(struct lbs_private *priv)
1158 {
1159         struct net_device *dev = priv->dev;
1160         int ret = -1;
1161         struct cmd_ctrl_node *cmdnode;
1162         unsigned long flags;
1163
1164         lbs_deb_enter(LBS_DEB_MAIN);
1165
1166         netif_stop_queue(priv->dev);
1167         netif_carrier_off(priv->dev);
1168
1169         lbs_debugfs_remove_one(priv);
1170
1171         /* Flush pending command nodes */
1172         spin_lock_irqsave(&priv->driver_lock, flags);
1173         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1174                 cmdnode->cmdwaitqwoken = 1;
1175                 wake_up_interruptible(&cmdnode->cmdwait_q);
1176         }
1177         spin_unlock_irqrestore(&priv->driver_lock, flags);
1178
1179         unregister_netdev(dev);
1180
1181         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1182         return ret;
1183 }
1184 EXPORT_SYMBOL_GPL(lbs_stop_card);
1185
1186
1187 /**
1188  * @brief This function adds mshX interface
1189  *
1190  *  @param priv    A pointer to the struct lbs_private structure
1191  *  @return        0 if successful, -X otherwise
1192  */
1193 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1194 {
1195         struct net_device *mesh_dev = NULL;
1196         int ret = 0;
1197
1198         lbs_deb_enter(LBS_DEB_MESH);
1199
1200         /* Allocate a virtual mesh device */
1201         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1202                 lbs_deb_mesh("init mshX device failed\n");
1203                 ret = -ENOMEM;
1204                 goto done;
1205         }
1206         mesh_dev->priv = priv;
1207         priv->mesh_dev = mesh_dev;
1208
1209         mesh_dev->open = lbs_dev_open;
1210         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1211         mesh_dev->stop = lbs_mesh_stop;
1212         mesh_dev->get_stats = lbs_get_stats;
1213         mesh_dev->set_mac_address = lbs_set_mac_address;
1214         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1215         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1216                         sizeof(priv->dev->dev_addr));
1217
1218         SET_NETDEV_DEV(priv->mesh_dev, dev);
1219
1220 #ifdef  WIRELESS_EXT
1221         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1222 #endif
1223         /* Register virtual mesh interface */
1224         ret = register_netdev(mesh_dev);
1225         if (ret) {
1226                 lbs_pr_err("cannot register mshX virtual interface\n");
1227                 goto err_free;
1228         }
1229
1230         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1231         if (ret)
1232                 goto err_unregister;
1233
1234         /* Everything successful */
1235         ret = 0;
1236         goto done;
1237
1238 err_unregister:
1239         unregister_netdev(mesh_dev);
1240
1241 err_free:
1242         free_netdev(mesh_dev);
1243
1244 done:
1245         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1246         return ret;
1247 }
1248 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1249
1250
1251 void lbs_remove_mesh(struct lbs_private *priv)
1252 {
1253         struct net_device *mesh_dev;
1254
1255         lbs_deb_enter(LBS_DEB_MAIN);
1256
1257         if (!priv)
1258                 goto out;
1259
1260         mesh_dev = priv->mesh_dev;
1261
1262         netif_stop_queue(mesh_dev);
1263         netif_carrier_off(priv->mesh_dev);
1264
1265         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1266         unregister_netdev(mesh_dev);
1267
1268         priv->mesh_dev = NULL ;
1269         free_netdev(mesh_dev);
1270
1271 out:
1272         lbs_deb_leave(LBS_DEB_MAIN);
1273 }
1274 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1275
1276 /**
1277  *  @brief This function finds the CFP in
1278  *  region_cfp_table based on region and band parameter.
1279  *
1280  *  @param region  The region code
1281  *  @param band    The band
1282  *  @param cfp_no  A pointer to CFP number
1283  *  @return        A pointer to CFP
1284  */
1285 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1286 {
1287         int i, end;
1288
1289         lbs_deb_enter(LBS_DEB_MAIN);
1290
1291         end = ARRAY_SIZE(region_cfp_table);
1292
1293         for (i = 0; i < end ; i++) {
1294                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1295                         region_cfp_table[i].region);
1296                 if (region_cfp_table[i].region == region) {
1297                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1298                         lbs_deb_leave(LBS_DEB_MAIN);
1299                         return region_cfp_table[i].cfp_BG;
1300                 }
1301         }
1302
1303         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1304         return NULL;
1305 }
1306
1307 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1308 {
1309         int ret = 0;
1310         int i = 0;
1311
1312         struct chan_freq_power *cfp;
1313         int cfp_no;
1314
1315         lbs_deb_enter(LBS_DEB_MAIN);
1316
1317         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1318
1319         {
1320                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1321                 if (cfp != NULL) {
1322                         priv->region_channel[i].nrcfp = cfp_no;
1323                         priv->region_channel[i].CFP = cfp;
1324                 } else {
1325                         lbs_deb_main("wrong region code %#x in band B/G\n",
1326                                region);
1327                         ret = -1;
1328                         goto out;
1329                 }
1330                 priv->region_channel[i].valid = 1;
1331                 priv->region_channel[i].region = region;
1332                 priv->region_channel[i].band = band;
1333                 i++;
1334         }
1335 out:
1336         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1337         return ret;
1338 }
1339
1340 /**
1341  *  @brief This function handles the interrupt. it will change PS
1342  *  state if applicable. it will wake up main_thread to handle
1343  *  the interrupt event as well.
1344  *
1345  *  @param dev     A pointer to net_device structure
1346  *  @return        n/a
1347  */
1348 void lbs_interrupt(struct lbs_private *priv)
1349 {
1350         lbs_deb_enter(LBS_DEB_THREAD);
1351
1352         lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1353
1354         if (spin_trylock(&priv->driver_lock)) {
1355                 spin_unlock(&priv->driver_lock);
1356                 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1357                 WARN_ON(1);
1358         }
1359
1360         priv->intcounter++;
1361
1362         if (priv->psstate == PS_STATE_SLEEP)
1363                 priv->psstate = PS_STATE_AWAKE;
1364
1365         wake_up_interruptible(&priv->waitq);
1366
1367         lbs_deb_leave(LBS_DEB_THREAD);
1368 }
1369 EXPORT_SYMBOL_GPL(lbs_interrupt);
1370
1371 int lbs_reset_device(struct lbs_private *priv)
1372 {
1373         int ret;
1374
1375         lbs_deb_enter(LBS_DEB_MAIN);
1376         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1377                                     CMD_ACT_HALT, 0, 0, NULL);
1378         msleep_interruptible(10);
1379
1380         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1381         return ret;
1382 }
1383 EXPORT_SYMBOL_GPL(lbs_reset_device);
1384
1385 static int __init lbs_init_module(void)
1386 {
1387         lbs_deb_enter(LBS_DEB_MAIN);
1388         lbs_debugfs_init();
1389         lbs_deb_leave(LBS_DEB_MAIN);
1390         return 0;
1391 }
1392
1393 static void __exit lbs_exit_module(void)
1394 {
1395         lbs_deb_enter(LBS_DEB_MAIN);
1396
1397         lbs_debugfs_remove();
1398
1399         lbs_deb_leave(LBS_DEB_MAIN);
1400 }
1401
1402 /*
1403  * rtap interface support fuctions
1404  */
1405
1406 static int lbs_rtap_open(struct net_device *dev)
1407 {
1408         /* Yes, _stop_ the queue. Because we don't support injection */
1409         netif_carrier_off(dev);
1410         netif_stop_queue(dev);
1411         return 0;
1412 }
1413
1414 static int lbs_rtap_stop(struct net_device *dev)
1415 {
1416         return 0;
1417 }
1418
1419 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1420 {
1421         netif_stop_queue(dev);
1422         return NETDEV_TX_BUSY;
1423 }
1424
1425 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1426 {
1427         struct lbs_private *priv = dev->priv;
1428         return &priv->stats;
1429 }
1430
1431
1432 void lbs_remove_rtap(struct lbs_private *priv)
1433 {
1434         if (priv->rtap_net_dev == NULL)
1435                 return;
1436         unregister_netdev(priv->rtap_net_dev);
1437         free_netdev(priv->rtap_net_dev);
1438         priv->rtap_net_dev = NULL;
1439 }
1440
1441 int lbs_add_rtap(struct lbs_private *priv)
1442 {
1443         int rc = 0;
1444         struct net_device *rtap_dev;
1445
1446         if (priv->rtap_net_dev)
1447                 return -EPERM;
1448
1449         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1450         if (rtap_dev == NULL)
1451                 return -ENOMEM;
1452
1453         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1454         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1455         rtap_dev->open = lbs_rtap_open;
1456         rtap_dev->stop = lbs_rtap_stop;
1457         rtap_dev->get_stats = lbs_rtap_get_stats;
1458         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1459         rtap_dev->set_multicast_list = lbs_set_multicast_list;
1460         rtap_dev->priv = priv;
1461
1462         rc = register_netdev(rtap_dev);
1463         if (rc) {
1464                 free_netdev(rtap_dev);
1465                 return rc;
1466         }
1467         priv->rtap_net_dev = rtap_dev;
1468
1469         return 0;
1470 }
1471
1472
1473 module_init(lbs_init_module);
1474 module_exit(lbs_exit_module);
1475
1476 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1477 MODULE_AUTHOR("Marvell International Ltd.");
1478 MODULE_LICENSE("GPL");