drivers/net/wireless/libertas/main.c

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