drivers/net/wireless/libertas/main.c

   1 /**
   2   * This file contains the major functions in WLAN
   3   * driver. It includes init, exit, open, close and main
   4   * thread etc..
   5   */
   6
   7 #include <linux/moduleparam.h>
   8 #include <linux/delay.h>
   9 #include <linux/etherdevice.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/if_arp.h>
  12 #include <linux/kthread.h>
  13
  14 #include <net/iw_handler.h>
  15 #include <net/ieee80211.h>
  16
  17 #include "host.h"
  18 #include "decl.h"
  19 #include "dev.h"
  20 #include "wext.h"
  21 #include "debugfs.h"
  22 #include "assoc.h"
  23 #include "join.h"
  24 #include "cmd.h"
  25
  26 #define DRIVER_RELEASE_VERSION "323.p0"
  27 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
  28 #ifdef  DEBUG
  29     "-dbg"
  30 #endif
  31     "";
  32
  33
  34 /* Module parameters */
  35 unsigned int lbs_debug;
  36 EXPORT_SYMBOL_GPL(lbs_debug);
  37 module_param_named(libertas_debug, lbs_debug, int, 0644);
  38
  39
  40 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
  41 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
  42 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
  43 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
  44 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
  45
  46 /* Format { channel, frequency (MHz), maxtxpower } */
  47 /* band: 'B/G', region: USA FCC/Canada IC */
  48 static struct chan_freq_power channel_freq_power_US_BG[] = {
  49         {1, 2412, LBS_TX_PWR_US_DEFAULT},
  50         {2, 2417, LBS_TX_PWR_US_DEFAULT},
  51         {3, 2422, LBS_TX_PWR_US_DEFAULT},
  52         {4, 2427, LBS_TX_PWR_US_DEFAULT},
  53         {5, 2432, LBS_TX_PWR_US_DEFAULT},
  54         {6, 2437, LBS_TX_PWR_US_DEFAULT},
  55         {7, 2442, LBS_TX_PWR_US_DEFAULT},
  56         {8, 2447, LBS_TX_PWR_US_DEFAULT},
  57         {9, 2452, LBS_TX_PWR_US_DEFAULT},
  58         {10, 2457, LBS_TX_PWR_US_DEFAULT},
  59         {11, 2462, LBS_TX_PWR_US_DEFAULT}
  60 };
  61
  62 /* band: 'B/G', region: Europe ETSI */
  63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
  64         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
  65         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
  66         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
  67         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
  68         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
  69         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
  70         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
  71         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
  72         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
  73         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
  74         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
  75         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
  76         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
  77 };
  78
  79 /* band: 'B/G', region: Spain */
  80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
  81         {10, 2457, LBS_TX_PWR_DEFAULT},
  82         {11, 2462, LBS_TX_PWR_DEFAULT}
  83 };
  84
  85 /* band: 'B/G', region: France */
  86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
  87         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
  88         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
  89         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
  90         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
  91 };
  92
  93 /* band: 'B/G', region: Japan */
  94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
  95         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
  96         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
  97         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
  98         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
  99         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
 100         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
 101         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
 102         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
 103         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
 104         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
 105         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
 106         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
 107         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
 108         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
 109 };
 110
 111 /**
 112  * the structure for channel, frequency and power
 113  */
 114 struct region_cfp_table {
 115         u8 region;
 116         struct chan_freq_power *cfp_BG;
 117         int cfp_no_BG;
 118 };
 119
 120 /**
 121  * the structure for the mapping between region and CFP
 122  */
 123 static struct region_cfp_table region_cfp_table[] = {
 124         {0x10,                  /*US FCC */
 125          channel_freq_power_US_BG,
 126          ARRAY_SIZE(channel_freq_power_US_BG),
 127          }
 128         ,
 129         {0x20,                  /*CANADA IC */
 130          channel_freq_power_US_BG,
 131          ARRAY_SIZE(channel_freq_power_US_BG),
 132          }
 133         ,
 134         {0x30, /*EU*/ channel_freq_power_EU_BG,
 135          ARRAY_SIZE(channel_freq_power_EU_BG),
 136          }
 137         ,
 138         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
 139          ARRAY_SIZE(channel_freq_power_SPN_BG),
 140          }
 141         ,
 142         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
 143          ARRAY_SIZE(channel_freq_power_FR_BG),
 144          }
 145         ,
 146         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
 147          ARRAY_SIZE(channel_freq_power_JPN_BG),
 148          }
 149         ,
 150 /*Add new region here */
 151 };
 152
 153 /**
 154  * the table to keep region code
 155  */
 156 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
 157     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
 158
 159 /**
 160  * 802.11b/g supported bitrates (in 500Kb/s units)
 161  */
 162 u8 lbs_bg_rates[MAX_RATES] =
 163     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
 164 0x00, 0x00 };
 165
 166 /**
 167  * FW rate table.  FW refers to rates by their index in this table, not by the
 168  * rate value itself.  Values of 0x00 are
 169  * reserved positions.
 170  */
 171 static u8 fw_data_rates[MAX_RATES] =
 172     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
 173       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
 174 };
 175
 176 /**
 177  *  @brief use index to get the data rate
 178  *
 179  *  @param idx                The index of data rate
 180  *  @return                     data rate or 0
 181  */
 182 u32 lbs_fw_index_to_data_rate(u8 idx)
 183 {
 184         if (idx >= sizeof(fw_data_rates))
 185                 idx = 0;
 186         return fw_data_rates[idx];
 187 }
 188
 189 /**
 190  *  @brief use rate to get the index
 191  *
 192  *  @param rate                 data rate
 193  *  @return                     index or 0
 194  */
 195 u8 lbs_data_rate_to_fw_index(u32 rate)
 196 {
 197         u8 i;
 198
 199         if (!rate)
 200                 return 0;
 201
 202         for (i = 0; i < sizeof(fw_data_rates); i++) {
 203                 if (rate == fw_data_rates[i])
 204                         return i;
 205         }
 206         return 0;
 207 }
 208
 209 /**
 210  * Attributes exported through sysfs
 211  */
 212
 213 /**
 214  * @brief Get function for sysfs attribute anycast_mask
 215  */
 216 static ssize_t lbs_anycast_get(struct device *dev,
 217                 struct device_attribute *attr, char * buf)
 218 {
 219         struct lbs_private *priv = to_net_dev(dev)->priv;
 220         struct cmd_ds_mesh_access mesh_access;
 221         int ret;
 222
 223         memset(&mesh_access, 0, sizeof(mesh_access));
 224
 225         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
 226         if (ret)
 227                 return ret;
 228
 229         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
 230 }
 231
 232 /**
 233  * @brief Set function for sysfs attribute anycast_mask
 234  */
 235 static ssize_t lbs_anycast_set(struct device *dev,
 236                 struct device_attribute *attr, const char * buf, size_t count)
 237 {
 238         struct lbs_private *priv = to_net_dev(dev)->priv;
 239         struct cmd_ds_mesh_access mesh_access;
 240         uint32_t datum;
 241         int ret;
 242
 243         memset(&mesh_access, 0, sizeof(mesh_access));
 244         sscanf(buf, "%x", &datum);
 245         mesh_access.data[0] = cpu_to_le32(datum);
 246
 247         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
 248         if (ret)
 249                 return ret;
 250
 251         return strlen(buf);
 252 }
 253
 254 static int lbs_add_rtap(struct lbs_private *priv);
 255 static void lbs_remove_rtap(struct lbs_private *priv);
 256 static int lbs_add_mesh(struct lbs_private *priv);
 257 static void lbs_remove_mesh(struct lbs_private *priv);
 258
 259
 260 /**
 261  * Get function for sysfs attribute rtap
 262  */
 263 static ssize_t lbs_rtap_get(struct device *dev,
 264                 struct device_attribute *attr, char * buf)
 265 {
 266         struct lbs_private *priv = to_net_dev(dev)->priv;
 267         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
 268 }
 269
 270 /**
 271  *  Set function for sysfs attribute rtap
 272  */
 273 static ssize_t lbs_rtap_set(struct device *dev,
 274                 struct device_attribute *attr, const char * buf, size_t count)
 275 {
 276         int monitor_mode;
 277         struct lbs_private *priv = to_net_dev(dev)->priv;
 278
 279         sscanf(buf, "%x", &monitor_mode);
 280         if (monitor_mode != LBS_MONITOR_OFF) {
 281                 if(priv->monitormode == monitor_mode)
 282                         return strlen(buf);
 283                 if (priv->monitormode == LBS_MONITOR_OFF) {
 284                         if (priv->infra_open || priv->mesh_open)
 285                                 return -EBUSY;
 286                         if (priv->mode == IW_MODE_INFRA)
 287                                 lbs_send_deauthentication(priv);
 288                         else if (priv->mode == IW_MODE_ADHOC)
 289                                 lbs_stop_adhoc_network(priv);
 290                         lbs_add_rtap(priv);
 291                 }
 292                 priv->monitormode = monitor_mode;
 293         }
 294
 295         else {
 296                 if (priv->monitormode == LBS_MONITOR_OFF)
 297                         return strlen(buf);
 298                 priv->monitormode = LBS_MONITOR_OFF;
 299                 lbs_remove_rtap(priv);
 300
 301                 if (priv->currenttxskb) {
 302                         dev_kfree_skb_any(priv->currenttxskb);
 303                         priv->currenttxskb = NULL;
 304                 }
 305
 306                 /* Wake queues, command thread, etc. */
 307                 lbs_host_to_card_done(priv);
 308         }
 309
 310         lbs_prepare_and_send_command(priv,
 311                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
 312                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
 313         return strlen(buf);
 314 }
 315
 316 /**
 317  * lbs_rtap attribute to be exported per ethX interface
 318  * through sysfs (/sys/class/net/ethX/lbs_rtap)
 319  */
 320 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
 321
 322 /**
 323  * Get function for sysfs attribute mesh
 324  */
 325 static ssize_t lbs_mesh_get(struct device *dev,
 326                 struct device_attribute *attr, char * buf)
 327 {
 328         struct lbs_private *priv = to_net_dev(dev)->priv;
 329         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
 330 }
 331
 332 /**
 333  *  Set function for sysfs attribute mesh
 334  */
 335 static ssize_t lbs_mesh_set(struct device *dev,
 336                 struct device_attribute *attr, const char * buf, size_t count)
 337 {
 338         struct lbs_private *priv = to_net_dev(dev)->priv;
 339         int enable;
 340         int ret;
 341
 342         sscanf(buf, "%x", &enable);
 343         enable = !!enable;
 344         if (enable == !!priv->mesh_dev)
 345                 return count;
 346
 347         ret = lbs_mesh_config(priv, enable);
 348         if (ret)
 349                 return ret;
 350
 351         if (enable)
 352                 lbs_add_mesh(priv);
 353         else
 354                 lbs_remove_mesh(priv);
 355
 356         return count;
 357 }
 358
 359 /**
 360  * lbs_mesh attribute to be exported per ethX interface
 361  * through sysfs (/sys/class/net/ethX/lbs_mesh)
 362  */
 363 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
 364
 365 /**
 366  * anycast_mask attribute to be exported per mshX interface
 367  * through sysfs (/sys/class/net/mshX/anycast_mask)
 368  */
 369 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
 370
 371 static struct attribute *lbs_mesh_sysfs_entries[] = {
 372         &dev_attr_anycast_mask.attr,
 373         NULL,
 374 };
 375
 376 static struct attribute_group lbs_mesh_attr_group = {
 377         .attrs = lbs_mesh_sysfs_entries,
 378 };
 379
 380 /**
 381  *  @brief This function opens the ethX or mshX interface
 382  *
 383  *  @param dev     A pointer to net_device structure
 384  *  @return        0 or -EBUSY if monitor mode active
 385  */
 386 static int lbs_dev_open(struct net_device *dev)
 387 {
 388         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
 389         int ret = 0;
 390
 391         spin_lock_irq(&priv->driver_lock);
 392
 393         if (priv->monitormode != LBS_MONITOR_OFF) {
 394                 ret = -EBUSY;
 395                 goto out;
 396         }
 397
 398         if (dev == priv->mesh_dev) {
 399                 priv->mesh_open = 1;
 400                 priv->mesh_connect_status = LBS_CONNECTED;
 401                 netif_carrier_on(dev);
 402         } else {
 403                 priv->infra_open = 1;
 404
 405                 if (priv->connect_status == LBS_CONNECTED)
 406                         netif_carrier_on(dev);
 407                 else
 408                         netif_carrier_off(dev);
 409         }
 410
 411         if (!priv->tx_pending_len)
 412                 netif_wake_queue(dev);
 413  out:
 414
 415         spin_unlock_irq(&priv->driver_lock);
 416         return ret;
 417 }
 418
 419 /**
 420  *  @brief This function closes the mshX interface
 421  *
 422  *  @param dev     A pointer to net_device structure
 423  *  @return        0
 424  */
 425 static int lbs_mesh_stop(struct net_device *dev)
 426 {
 427         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
 428
 429         spin_lock_irq(&priv->driver_lock);
 430
 431         priv->mesh_open = 0;
 432         priv->mesh_connect_status = LBS_DISCONNECTED;
 433
 434         netif_stop_queue(dev);
 435         netif_carrier_off(dev);
 436
 437         spin_unlock_irq(&priv->driver_lock);
 438         return 0;
 439 }
 440
 441 /**
 442  *  @brief This function closes the ethX interface
 443  *
 444  *  @param dev     A pointer to net_device structure
 445  *  @return        0
 446  */
 447 static int lbs_eth_stop(struct net_device *dev)
 448 {
 449         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 450
 451         spin_lock_irq(&priv->driver_lock);
 452
 453         priv->infra_open = 0;
 454
 455         netif_stop_queue(dev);
 456
 457         spin_unlock_irq(&priv->driver_lock);
 458         return 0;
 459 }
 460
 461 static void lbs_tx_timeout(struct net_device *dev)
 462 {
 463         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 464
 465         lbs_deb_enter(LBS_DEB_TX);
 466
 467         lbs_pr_err("tx watch dog timeout\n");
 468
 469         dev->trans_start = jiffies;
 470
 471         if (priv->currenttxskb) {
 472                 priv->eventcause = 0x01000000;
 473                 lbs_send_tx_feedback(priv);
 474         }
 475         /* XX: Shouldn't we also call into the hw-specific driver
 476            to kick it somehow? */
 477         lbs_host_to_card_done(priv);
 478
 479         lbs_deb_leave(LBS_DEB_TX);
 480 }
 481
 482 void lbs_host_to_card_done(struct lbs_private *priv)
 483 {
 484         unsigned long flags;
 485
 486         spin_lock_irqsave(&priv->driver_lock, flags);
 487
 488         priv->dnld_sent = DNLD_RES_RECEIVED;
 489
 490         /* Wake main thread if commands are pending */
 491         if (!priv->cur_cmd || priv->tx_pending_len > 0)
 492                 wake_up_interruptible(&priv->waitq);
 493
 494         spin_unlock_irqrestore(&priv->driver_lock, flags);
 495 }
 496 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
 497
 498 /**
 499  *  @brief This function returns the network statistics
 500  *
 501  *  @param dev     A pointer to struct lbs_private structure
 502  *  @return        A pointer to net_device_stats structure
 503  */
 504 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
 505 {
 506         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 507
 508         return &priv->stats;
 509 }
 510
 511 static int lbs_set_mac_address(struct net_device *dev, void *addr)
 512 {
 513         int ret = 0;
 514         struct lbs_private *priv = (struct lbs_private *) dev->priv;
 515         struct sockaddr *phwaddr = addr;
 516
 517         lbs_deb_enter(LBS_DEB_NET);
 518
 519         /* In case it was called from the mesh device */
 520         dev = priv->dev ;
 521
 522         memset(priv->current_addr, 0, ETH_ALEN);
 523
 524         /* dev->dev_addr is 8 bytes */
 525         lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
 526
 527         lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
 528         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
 529
 530         ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
 531                                     CMD_ACT_SET,
 532                                     CMD_OPTION_WAITFORRSP, 0, NULL);
 533
 534         if (ret) {
 535                 lbs_deb_net("set MAC address failed\n");
 536                 ret = -1;
 537                 goto done;
 538         }
 539
 540         lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
 541         memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
 542         if (priv->mesh_dev)
 543                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 544
 545 done:
 546         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
 547         return ret;
 548 }
 549
 550 static int lbs_copy_multicast_address(struct lbs_private *priv,
 551                                      struct net_device *dev)
 552 {
 553         int i = 0;
 554         struct dev_mc_list *mcptr = dev->mc_list;
 555
 556         for (i = 0; i < dev->mc_count; i++) {
 557                 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
 558                 mcptr = mcptr->next;
 559         }
 560
 561         return i;
 562
 563 }
 564
 565 static void lbs_set_multicast_list(struct net_device *dev)
 566 {
 567         struct lbs_private *priv = dev->priv;
 568         int oldpacketfilter;
 569         DECLARE_MAC_BUF(mac);
 570
 571         lbs_deb_enter(LBS_DEB_NET);
 572
 573         oldpacketfilter = priv->currentpacketfilter;
 574
 575         if (dev->flags & IFF_PROMISC) {
 576                 lbs_deb_net("enable promiscuous mode\n");
 577                 priv->currentpacketfilter |=
 578                     CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 579                 priv->currentpacketfilter &=
 580                     ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
 581                       CMD_ACT_MAC_MULTICAST_ENABLE);
 582         } else {
 583                 /* Multicast */
 584                 priv->currentpacketfilter &=
 585                     ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
 586
 587                 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
 588                     MRVDRV_MAX_MULTICAST_LIST_SIZE) {
 589                         lbs_deb_net( "enabling all multicast\n");
 590                         priv->currentpacketfilter |=
 591                             CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 592                         priv->currentpacketfilter &=
 593                             ~CMD_ACT_MAC_MULTICAST_ENABLE;
 594                 } else {
 595                         priv->currentpacketfilter &=
 596                             ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
 597
 598                         if (!dev->mc_count) {
 599                                 lbs_deb_net("no multicast addresses, "
 600                                        "disabling multicast\n");
 601                                 priv->currentpacketfilter &=
 602                                     ~CMD_ACT_MAC_MULTICAST_ENABLE;
 603                         } else {
 604                                 int i;
 605
 606                                 priv->currentpacketfilter |=
 607                                     CMD_ACT_MAC_MULTICAST_ENABLE;
 608
 609                                 priv->nr_of_multicastmacaddr =
 610                                     lbs_copy_multicast_address(priv, dev);
 611
 612                                 lbs_deb_net("multicast addresses: %d\n",
 613                                        dev->mc_count);
 614
 615                                 for (i = 0; i < dev->mc_count; i++) {
 616                                         lbs_deb_net("Multicast address %d:%s\n",
 617                                                i, print_mac(mac,
 618                                                priv->multicastlist[i]));
 619                                 }
 620                                 /* send multicast addresses to firmware */
 621                                 lbs_prepare_and_send_command(priv,
 622                                                       CMD_MAC_MULTICAST_ADR,
 623                                                       CMD_ACT_SET, 0, 0,
 624                                                       NULL);
 625                         }
 626                 }
 627         }
 628
 629         if (priv->currentpacketfilter != oldpacketfilter) {
 630                 lbs_set_mac_packet_filter(priv);
 631         }
 632
 633         lbs_deb_leave(LBS_DEB_NET);
 634 }
 635
 636 /**
 637  *  @brief This function handles the major jobs in the LBS driver.
 638  *  It handles all events generated by firmware, RX data received
 639  *  from firmware and TX data sent from kernel.
 640  *
 641  *  @param data    A pointer to lbs_thread structure
 642  *  @return        0
 643  */
 644 static int lbs_thread(void *data)
 645 {
 646         struct net_device *dev = data;
 647         struct lbs_private *priv = dev->priv;
 648         wait_queue_t wait;
 649         u8 ireg = 0;
 650
 651         lbs_deb_enter(LBS_DEB_THREAD);
 652
 653         init_waitqueue_entry(&wait, current);
 654
 655         for (;;) {
 656                 int shouldsleep;
 657
 658                 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 659                                 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 660
 661                 add_wait_queue(&priv->waitq, &wait);
 662                 set_current_state(TASK_INTERRUPTIBLE);
 663                 spin_lock_irq(&priv->driver_lock);
 664
 665                 if (priv->surpriseremoved)
 666                         shouldsleep = 0;        /* Bye */
 667                 else if (priv->psstate == PS_STATE_SLEEP)
 668                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
 669                 else if (priv->intcounter)
 670                         shouldsleep = 0;        /* Interrupt pending. Deal with it now */
 671                 else if (!priv->fw_ready)
 672                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
 673                 else if (priv->dnld_sent)
 674                         shouldsleep = 1;        /* Something is en route to the device already */
 675                 else if (priv->tx_pending_len > 0)
 676                         shouldsleep = 0;        /* We've a packet to send */
 677                 else if (priv->cur_cmd)
 678                         shouldsleep = 1;        /* Can't send a command; one already running */
 679                 else if (!list_empty(&priv->cmdpendingq))
 680                         shouldsleep = 0;        /* We have a command to send */
 681                 else
 682                         shouldsleep = 1;        /* No command */
 683
 684                 if (shouldsleep) {
 685                         lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
 686                                        priv->connect_status, priv->intcounter,
 687                                        priv->psmode, priv->psstate);
 688                         spin_unlock_irq(&priv->driver_lock);
 689                         schedule();
 690                 } else
 691                         spin_unlock_irq(&priv->driver_lock);
 692
 693                 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 694                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 695
 696                 set_current_state(TASK_RUNNING);
 697                 remove_wait_queue(&priv->waitq, &wait);
 698
 699                 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 700                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 701
 702                 if (kthread_should_stop() || priv->surpriseremoved) {
 703                         lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
 704                                        priv->surpriseremoved);
 705                         break;
 706                 }
 707
 708
 709                 spin_lock_irq(&priv->driver_lock);
 710
 711                 if (priv->intcounter) {
 712                         u8 int_status;
 713
 714                         priv->intcounter = 0;
 715                         int_status = priv->hw_get_int_status(priv, &ireg);
 716
 717                         if (int_status) {
 718                                 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
 719                                 spin_unlock_irq(&priv->driver_lock);
 720                                 continue;
 721                         }
 722                         priv->hisregcpy |= ireg;
 723                 }
 724
 725                 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
 726                                priv->intcounter, priv->currenttxskb, priv->dnld_sent);
 727
 728                 /* command response? */
 729                 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
 730                         lbs_deb_thread("main-thread: cmd response ready\n");
 731
 732                         priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 733                         spin_unlock_irq(&priv->driver_lock);
 734                         lbs_process_rx_command(priv);
 735                         spin_lock_irq(&priv->driver_lock);
 736                 }
 737
 738                 /* Any Card Event */
 739                 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
 740                         lbs_deb_thread("main-thread: Card Event Activity\n");
 741
 742                         priv->hisregcpy &= ~MRVDRV_CARDEVENT;
 743
 744                         if (priv->hw_read_event_cause(priv)) {
 745                                 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
 746                                 spin_unlock_irq(&priv->driver_lock);
 747                                 continue;
 748                         }
 749                         spin_unlock_irq(&priv->driver_lock);
 750                         lbs_process_event(priv);
 751                 } else
 752                         spin_unlock_irq(&priv->driver_lock);
 753
 754                 if (!priv->fw_ready)
 755                         continue;
 756
 757                 /* Check if we need to confirm Sleep Request received previously */
 758                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
 759                     !priv->dnld_sent && !priv->cur_cmd) {
 760                         if (priv->connect_status == LBS_CONNECTED) {
 761                                 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
 762                                                priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
 763
 764                                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 765                         } else {
 766                                 /* workaround for firmware sending
 767                                  * deauth/linkloss event immediately
 768                                  * after sleep request; remove this
 769                                  * after firmware fixes it
 770                                  */
 771                                 priv->psstate = PS_STATE_AWAKE;
 772                                 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
 773                         }
 774                 }
 775
 776                 /* The PS state is changed during processing of Sleep Request
 777                  * event above
 778                  */
 779                 if ((priv->psstate == PS_STATE_SLEEP) ||
 780                     (priv->psstate == PS_STATE_PRE_SLEEP))
 781                         continue;
 782
 783                 /* Execute the next command */
 784                 if (!priv->dnld_sent && !priv->cur_cmd)
 785                         lbs_execute_next_command(priv);
 786
 787                 /* Wake-up command waiters which can't sleep in
 788                  * lbs_prepare_and_send_command
 789                  */
 790                 if (!list_empty(&priv->cmdpendingq))
 791                         wake_up_all(&priv->cmd_pending);
 792
 793                 spin_lock_irq(&priv->driver_lock);
 794                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
 795                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
 796                                                         priv->tx_pending_buf,
 797                                                         priv->tx_pending_len);
 798                         if (ret) {
 799                                 lbs_deb_tx("host_to_card failed %d\n", ret);
 800                                 priv->dnld_sent = DNLD_RES_RECEIVED;
 801                         }
 802                         priv->tx_pending_len = 0;
 803                         if (!priv->currenttxskb) {
 804                                 /* We can wake the queues immediately if we aren't
 805                                    waiting for TX feedback */
 806                                 if (priv->connect_status == LBS_CONNECTED)
 807                                         netif_wake_queue(priv->dev);
 808                                 if (priv->mesh_dev &&
 809                                     priv->mesh_connect_status == LBS_CONNECTED)
 810                                         netif_wake_queue(priv->mesh_dev);
 811                         }
 812                 }
 813                 spin_unlock_irq(&priv->driver_lock);
 814         }
 815
 816         del_timer(&priv->command_timer);
 817         wake_up_all(&priv->cmd_pending);
 818
 819         lbs_deb_leave(LBS_DEB_THREAD);
 820         return 0;
 821 }
 822
 823 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
 824                                 struct cmd_header *cmd)
 825 {
 826         lbs_deb_fw("HOST_SLEEP_ACTIVATE succeeded\n");
 827
 828         netif_device_detach(priv->dev);
 829         if (priv->mesh_dev)
 830                 netif_device_detach(priv->mesh_dev);
 831
 832         priv->fw_ready = 0;
 833         return 0;
 834 }
 835
 836
 837 int lbs_suspend(struct lbs_private *priv)
 838 {
 839         struct cmd_header cmd;
 840         int ret;
 841
 842         if (priv->wol_criteria == 0xffffffff) {
 843                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
 844                 return -EINVAL;
 845         }
 846
 847         memset(&cmd, 0, sizeof(cmd));
 848
 849         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
 850                         sizeof(cmd), lbs_suspend_callback, 0);
 851         if (ret)
 852                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
 853
 854         return ret;
 855 }
 856 EXPORT_SYMBOL_GPL(lbs_suspend);
 857
 858 int lbs_resume(struct lbs_private *priv)
 859 {
 860         priv->fw_ready = 1;
 861
 862         /* Firmware doesn't seem to give us RX packets any more
 863            until we send it some command. Might as well update */
 864         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 865                                      0, 0, NULL);
 866
 867         netif_device_attach(priv->dev);
 868         if (priv->mesh_dev)
 869                 netif_device_attach(priv->mesh_dev);
 870
 871         return 0;
 872 }
 873 EXPORT_SYMBOL_GPL(lbs_resume);
 874
 875 /**
 876  *  @brief This function downloads firmware image, gets
 877  *  HW spec from firmware and set basic parameters to
 878  *  firmware.
 879  *
 880  *  @param priv    A pointer to struct lbs_private structure
 881  *  @return        0 or -1
 882  */
 883 static int lbs_setup_firmware(struct lbs_private *priv)
 884 {
 885         int ret = -1;
 886
 887         lbs_deb_enter(LBS_DEB_FW);
 888
 889         /*
 890          * Read MAC address from HW
 891          */
 892         memset(priv->current_addr, 0xff, ETH_ALEN);
 893         ret = lbs_update_hw_spec(priv);
 894         if (ret) {
 895                 ret = -1;
 896                 goto done;
 897         }
 898
 899         lbs_set_mac_packet_filter(priv);
 900
 901         ret = lbs_get_data_rate(priv);
 902         if (ret < 0) {
 903                 ret = -1;
 904                 goto done;
 905         }
 906
 907         ret = 0;
 908 done:
 909         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
 910         return ret;
 911 }
 912
 913 /**
 914  *  This function handles the timeout of command sending.
 915  *  It will re-send the same command again.
 916  */
 917 static void command_timer_fn(unsigned long data)
 918 {
 919         struct lbs_private *priv = (struct lbs_private *)data;
 920         struct cmd_ctrl_node *node;
 921         unsigned long flags;
 922
 923         node = priv->cur_cmd;
 924         if (node == NULL) {
 925                 lbs_deb_fw("ptempnode empty\n");
 926                 return;
 927         }
 928
 929         if (!node->cmdbuf) {
 930                 lbs_deb_fw("cmd is NULL\n");
 931                 return;
 932         }
 933
 934         lbs_pr_info("command %x timed out\n", le16_to_cpu(node->cmdbuf->command));
 935
 936         if (!priv->fw_ready)
 937                 return;
 938
 939         spin_lock_irqsave(&priv->driver_lock, flags);
 940         priv->cur_cmd = NULL;
 941         spin_unlock_irqrestore(&priv->driver_lock, flags);
 942
 943         lbs_deb_fw("re-sending same command because of timeout\n");
 944         lbs_queue_cmd(priv, node, 0);
 945
 946         wake_up_interruptible(&priv->waitq);
 947
 948         return;
 949 }
 950
 951 static int lbs_init_adapter(struct lbs_private *priv)
 952 {
 953         size_t bufsize;
 954         int i, ret = 0;
 955
 956         /* Allocate buffer to store the BSSID list */
 957         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
 958         priv->networks = kzalloc(bufsize, GFP_KERNEL);
 959         if (!priv->networks) {
 960                 lbs_pr_err("Out of memory allocating beacons\n");
 961                 ret = -1;
 962                 goto out;
 963         }
 964
 965         /* Initialize scan result lists */
 966         INIT_LIST_HEAD(&priv->network_free_list);
 967         INIT_LIST_HEAD(&priv->network_list);
 968         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
 969                 list_add_tail(&priv->networks[i].list,
 970                               &priv->network_free_list);
 971         }
 972
 973         priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
 974         priv->lbs_ps_confirm_sleep.command =
 975             cpu_to_le16(CMD_802_11_PS_MODE);
 976         priv->lbs_ps_confirm_sleep.size =
 977             cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
 978         priv->lbs_ps_confirm_sleep.action =
 979             cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
 980
 981         memset(priv->current_addr, 0xff, ETH_ALEN);
 982
 983         priv->connect_status = LBS_DISCONNECTED;
 984         priv->mesh_connect_status = LBS_DISCONNECTED;
 985         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
 986         priv->mode = IW_MODE_INFRA;
 987         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
 988         priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
 989         priv->radioon = RADIO_ON;
 990         priv->auto_rate = 1;
 991         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
 992         priv->psmode = LBS802_11POWERMODECAM;
 993         priv->psstate = PS_STATE_FULL_POWER;
 994
 995         mutex_init(&priv->lock);
 996
 997         setup_timer(&priv->command_timer, command_timer_fn,
 998                     (unsigned long)priv);
 999
1000         INIT_LIST_HEAD(&priv->cmdfreeq);
1001         INIT_LIST_HEAD(&priv->cmdpendingq);
1002
1003         spin_lock_init(&priv->driver_lock);
1004         init_waitqueue_head(&priv->cmd_pending);
1005
1006         /* Allocate the command buffers */
1007         if (lbs_allocate_cmd_buffer(priv)) {
1008                 lbs_pr_err("Out of memory allocating command buffers\n");
1009                 ret = -1;
1010         }
1011
1012 out:
1013         return ret;
1014 }
1015
1016 static void lbs_free_adapter(struct lbs_private *priv)
1017 {
1018         lbs_deb_fw("free command buffer\n");
1019         lbs_free_cmd_buffer(priv);
1020
1021         lbs_deb_fw("free command_timer\n");
1022         del_timer(&priv->command_timer);
1023
1024         lbs_deb_fw("free scan results table\n");
1025         kfree(priv->networks);
1026         priv->networks = NULL;
1027 }
1028
1029 /**
1030  * @brief This function adds the card. it will probe the
1031  * card, allocate the lbs_priv and initialize the device.
1032  *
1033  *  @param card    A pointer to card
1034  *  @return        A pointer to struct lbs_private structure
1035  */
1036 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1037 {
1038         struct net_device *dev = NULL;
1039         struct lbs_private *priv = NULL;
1040
1041         lbs_deb_enter(LBS_DEB_NET);
1042
1043         /* Allocate an Ethernet device and register it */
1044         dev = alloc_etherdev(sizeof(struct lbs_private));
1045         if (!dev) {
1046                 lbs_pr_err("init ethX device failed\n");
1047                 goto done;
1048         }
1049         priv = dev->priv;
1050
1051         if (lbs_init_adapter(priv)) {
1052                 lbs_pr_err("failed to initialize adapter structure.\n");
1053                 goto err_init_adapter;
1054         }
1055
1056         priv->dev = dev;
1057         priv->card = card;
1058         priv->mesh_open = 0;
1059         priv->infra_open = 0;
1060
1061         /* Setup the OS Interface to our functions */
1062         dev->open = lbs_dev_open;
1063         dev->hard_start_xmit = lbs_hard_start_xmit;
1064         dev->stop = lbs_eth_stop;
1065         dev->set_mac_address = lbs_set_mac_address;
1066         dev->tx_timeout = lbs_tx_timeout;
1067         dev->get_stats = lbs_get_stats;
1068         dev->watchdog_timeo = 5 * HZ;
1069         dev->ethtool_ops = &lbs_ethtool_ops;
1070 #ifdef  WIRELESS_EXT
1071         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1072 #endif
1073         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1074         dev->set_multicast_list = lbs_set_multicast_list;
1075
1076         SET_NETDEV_DEV(dev, dmdev);
1077
1078         priv->rtap_net_dev = NULL;
1079
1080         lbs_deb_thread("Starting main thread...\n");
1081         init_waitqueue_head(&priv->waitq);
1082         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1083         if (IS_ERR(priv->main_thread)) {
1084                 lbs_deb_thread("Error creating main thread.\n");
1085                 goto err_init_adapter;
1086         }
1087
1088         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1089         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1090         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1091         INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1092
1093         sprintf(priv->mesh_ssid, "mesh");
1094         priv->mesh_ssid_len = 4;
1095
1096         priv->wol_criteria = 0xffffffff;
1097         priv->wol_gpio = 0xff;
1098
1099         goto done;
1100
1101 err_init_adapter:
1102         lbs_free_adapter(priv);
1103         free_netdev(dev);
1104         priv = NULL;
1105
1106 done:
1107         lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1108         return priv;
1109 }
1110 EXPORT_SYMBOL_GPL(lbs_add_card);
1111
1112
1113 int lbs_remove_card(struct lbs_private *priv)
1114 {
1115         struct net_device *dev = priv->dev;
1116         union iwreq_data wrqu;
1117
1118         lbs_deb_enter(LBS_DEB_MAIN);
1119
1120         lbs_remove_mesh(priv);
1121         lbs_remove_rtap(priv);
1122
1123         dev = priv->dev;
1124
1125         cancel_delayed_work(&priv->scan_work);
1126         cancel_delayed_work(&priv->assoc_work);
1127         destroy_workqueue(priv->work_thread);
1128
1129         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1130                 priv->psmode = LBS802_11POWERMODECAM;
1131                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1132         }
1133
1134         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1135         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1136         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1137
1138         /* Stop the thread servicing the interrupts */
1139         priv->surpriseremoved = 1;
1140         kthread_stop(priv->main_thread);
1141
1142         lbs_free_adapter(priv);
1143
1144         priv->dev = NULL;
1145         free_netdev(dev);
1146
1147         lbs_deb_leave(LBS_DEB_MAIN);
1148         return 0;
1149 }
1150 EXPORT_SYMBOL_GPL(lbs_remove_card);
1151
1152
1153 int lbs_start_card(struct lbs_private *priv)
1154 {
1155         struct net_device *dev = priv->dev;
1156         int ret = -1;
1157
1158         lbs_deb_enter(LBS_DEB_MAIN);
1159
1160         /* poke the firmware */
1161         ret = lbs_setup_firmware(priv);
1162         if (ret)
1163                 goto done;
1164
1165         /* init 802.11d */
1166         lbs_init_11d(priv);
1167
1168         if (register_netdev(dev)) {
1169                 lbs_pr_err("cannot register ethX device\n");
1170                 goto done;
1171         }
1172         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1173                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1174         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1175                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1176
1177         lbs_debugfs_init_one(priv, dev);
1178
1179         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1180
1181         ret = 0;
1182
1183 done:
1184         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1185         return ret;
1186 }
1187 EXPORT_SYMBOL_GPL(lbs_start_card);
1188
1189
1190 int lbs_stop_card(struct lbs_private *priv)
1191 {
1192         struct net_device *dev = priv->dev;
1193         int ret = -1;
1194         struct cmd_ctrl_node *cmdnode;
1195         unsigned long flags;
1196
1197         lbs_deb_enter(LBS_DEB_MAIN);
1198
1199         netif_stop_queue(priv->dev);
1200         netif_carrier_off(priv->dev);
1201
1202         lbs_debugfs_remove_one(priv);
1203         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1204         device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1205
1206         /* Flush pending command nodes */
1207         spin_lock_irqsave(&priv->driver_lock, flags);
1208         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1209                 cmdnode->cmdwaitqwoken = 1;
1210                 wake_up_interruptible(&cmdnode->cmdwait_q);
1211         }
1212         spin_unlock_irqrestore(&priv->driver_lock, flags);
1213
1214         unregister_netdev(dev);
1215
1216         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1217         return ret;
1218 }
1219 EXPORT_SYMBOL_GPL(lbs_stop_card);
1220
1221
1222 /**
1223  * @brief This function adds mshX interface
1224  *
1225  *  @param priv    A pointer to the struct lbs_private structure
1226  *  @return        0 if successful, -X otherwise
1227  */
1228 static int lbs_add_mesh(struct lbs_private *priv)
1229 {
1230         struct net_device *mesh_dev = NULL;
1231         int ret = 0;
1232
1233         lbs_deb_enter(LBS_DEB_MESH);
1234
1235         /* Allocate a virtual mesh device */
1236         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1237                 lbs_deb_mesh("init mshX device failed\n");
1238                 ret = -ENOMEM;
1239                 goto done;
1240         }
1241         mesh_dev->priv = priv;
1242         priv->mesh_dev = mesh_dev;
1243
1244         mesh_dev->open = lbs_dev_open;
1245         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1246         mesh_dev->stop = lbs_mesh_stop;
1247         mesh_dev->get_stats = lbs_get_stats;
1248         mesh_dev->set_mac_address = lbs_set_mac_address;
1249         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1250         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1251                         sizeof(priv->dev->dev_addr));
1252
1253         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1254
1255 #ifdef  WIRELESS_EXT
1256         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1257 #endif
1258         /* Register virtual mesh interface */
1259         ret = register_netdev(mesh_dev);
1260         if (ret) {
1261                 lbs_pr_err("cannot register mshX virtual interface\n");
1262                 goto err_free;
1263         }
1264
1265         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1266         if (ret)
1267                 goto err_unregister;
1268
1269         /* Everything successful */
1270         ret = 0;
1271         goto done;
1272
1273 err_unregister:
1274         unregister_netdev(mesh_dev);
1275
1276 err_free:
1277         free_netdev(mesh_dev);
1278
1279 done:
1280         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1281         return ret;
1282 }
1283 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1284
1285
1286 static void lbs_remove_mesh(struct lbs_private *priv)
1287 {
1288         struct net_device *mesh_dev;
1289
1290         lbs_deb_enter(LBS_DEB_MAIN);
1291
1292         if (!priv)
1293                 goto out;
1294
1295         mesh_dev = priv->mesh_dev;
1296         if (!mesh_dev)
1297                 goto out;
1298
1299         netif_stop_queue(mesh_dev);
1300         netif_carrier_off(priv->mesh_dev);
1301
1302         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1303         unregister_netdev(mesh_dev);
1304
1305         priv->mesh_dev = NULL;
1306         free_netdev(mesh_dev);
1307
1308 out:
1309         lbs_deb_leave(LBS_DEB_MAIN);
1310 }
1311 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1312
1313 /**
1314  *  @brief This function finds the CFP in
1315  *  region_cfp_table based on region and band parameter.
1316  *
1317  *  @param region  The region code
1318  *  @param band    The band
1319  *  @param cfp_no  A pointer to CFP number
1320  *  @return        A pointer to CFP
1321  */
1322 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1323 {
1324         int i, end;
1325
1326         lbs_deb_enter(LBS_DEB_MAIN);
1327
1328         end = ARRAY_SIZE(region_cfp_table);
1329
1330         for (i = 0; i < end ; i++) {
1331                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1332                         region_cfp_table[i].region);
1333                 if (region_cfp_table[i].region == region) {
1334                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1335                         lbs_deb_leave(LBS_DEB_MAIN);
1336                         return region_cfp_table[i].cfp_BG;
1337                 }
1338         }
1339
1340         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1341         return NULL;
1342 }
1343
1344 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1345 {
1346         int ret = 0;
1347         int i = 0;
1348
1349         struct chan_freq_power *cfp;
1350         int cfp_no;
1351
1352         lbs_deb_enter(LBS_DEB_MAIN);
1353
1354         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1355
1356         {
1357                 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1358                 if (cfp != NULL) {
1359                         priv->region_channel[i].nrcfp = cfp_no;
1360                         priv->region_channel[i].CFP = cfp;
1361                 } else {
1362                         lbs_deb_main("wrong region code %#x in band B/G\n",
1363                                region);
1364                         ret = -1;
1365                         goto out;
1366                 }
1367                 priv->region_channel[i].valid = 1;
1368                 priv->region_channel[i].region = region;
1369                 priv->region_channel[i].band = band;
1370                 i++;
1371         }
1372 out:
1373         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1374         return ret;
1375 }
1376
1377 /**
1378  *  @brief This function handles the interrupt. it will change PS
1379  *  state if applicable. it will wake up main_thread to handle
1380  *  the interrupt event as well.
1381  *
1382  *  @param dev     A pointer to net_device structure
1383  *  @return        n/a
1384  */
1385 void lbs_interrupt(struct lbs_private *priv)
1386 {
1387         lbs_deb_enter(LBS_DEB_THREAD);
1388
1389         lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1390
1391         if (spin_trylock(&priv->driver_lock)) {
1392                 spin_unlock(&priv->driver_lock);
1393                 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1394                 WARN_ON(1);
1395         }
1396
1397         priv->intcounter++;
1398
1399         if (priv->psstate == PS_STATE_SLEEP)
1400                 priv->psstate = PS_STATE_AWAKE;
1401
1402         wake_up_interruptible(&priv->waitq);
1403
1404         lbs_deb_leave(LBS_DEB_THREAD);
1405 }
1406 EXPORT_SYMBOL_GPL(lbs_interrupt);
1407
1408 int lbs_reset_device(struct lbs_private *priv)
1409 {
1410         int ret;
1411
1412         lbs_deb_enter(LBS_DEB_MAIN);
1413         ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1414                                     CMD_ACT_HALT, 0, 0, NULL);
1415         msleep_interruptible(10);
1416
1417         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1418         return ret;
1419 }
1420 EXPORT_SYMBOL_GPL(lbs_reset_device);
1421
1422 static int __init lbs_init_module(void)
1423 {
1424         lbs_deb_enter(LBS_DEB_MAIN);
1425         lbs_debugfs_init();
1426         lbs_deb_leave(LBS_DEB_MAIN);
1427         return 0;
1428 }
1429
1430 static void __exit lbs_exit_module(void)
1431 {
1432         lbs_deb_enter(LBS_DEB_MAIN);
1433
1434         lbs_debugfs_remove();
1435
1436         lbs_deb_leave(LBS_DEB_MAIN);
1437 }
1438
1439 /*
1440  * rtap interface support fuctions
1441  */
1442
1443 static int lbs_rtap_open(struct net_device *dev)
1444 {
1445         /* Yes, _stop_ the queue. Because we don't support injection */
1446         netif_carrier_off(dev);
1447         netif_stop_queue(dev);
1448         return 0;
1449 }
1450
1451 static int lbs_rtap_stop(struct net_device *dev)
1452 {
1453         return 0;
1454 }
1455
1456 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1457 {
1458         netif_stop_queue(dev);
1459         return NETDEV_TX_BUSY;
1460 }
1461
1462 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1463 {
1464         struct lbs_private *priv = dev->priv;
1465         return &priv->stats;
1466 }
1467
1468
1469 static void lbs_remove_rtap(struct lbs_private *priv)
1470 {
1471         if (priv->rtap_net_dev == NULL)
1472                 return;
1473         unregister_netdev(priv->rtap_net_dev);
1474         free_netdev(priv->rtap_net_dev);
1475         priv->rtap_net_dev = NULL;
1476 }
1477
1478 static int lbs_add_rtap(struct lbs_private *priv)
1479 {
1480         int rc = 0;
1481         struct net_device *rtap_dev;
1482
1483         if (priv->rtap_net_dev)
1484                 return -EPERM;
1485
1486         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1487         if (rtap_dev == NULL)
1488                 return -ENOMEM;
1489
1490         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1491         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1492         rtap_dev->open = lbs_rtap_open;
1493         rtap_dev->stop = lbs_rtap_stop;
1494         rtap_dev->get_stats = lbs_rtap_get_stats;
1495         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1496         rtap_dev->set_multicast_list = lbs_set_multicast_list;
1497         rtap_dev->priv = priv;
1498
1499         rc = register_netdev(rtap_dev);
1500         if (rc) {
1501                 free_netdev(rtap_dev);
1502                 return rc;
1503         }
1504         priv->rtap_net_dev = rtap_dev;
1505
1506         return 0;
1507 }
1508
1509
1510 module_init(lbs_init_module);
1511 module_exit(lbs_exit_module);
1512
1513 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1514 MODULE_AUTHOR("Marvell International Ltd.");
1515 MODULE_LICENSE("GPL");