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