Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6] / drivers / net / wireless / libertas / main.c
1 /**
2   * This file contains the major functions in WLAN
3   * driver. It includes init, exit, open, close and main
4   * thread etc..
5   */
6
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/etherdevice.h>
10 #include <linux/netdevice.h>
11 #include <linux/if_arp.h>
12 #include <linux/kthread.h>
13 #include <linux/kfifo.h>
14 #include <linux/stddef.h>
15
16 #include <net/iw_handler.h>
17 #include <net/ieee80211.h>
18
19 #include "host.h"
20 #include "decl.h"
21 #include "dev.h"
22 #include "wext.h"
23 #include "debugfs.h"
24 #include "scan.h"
25 #include "assoc.h"
26 #include "cmd.h"
27
28 #define DRIVER_RELEASE_VERSION "323.p0"
29 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
30 #ifdef  DEBUG
31     "-dbg"
32 #endif
33     "";
34
35
36 /* Module parameters */
37 unsigned int lbs_debug;
38 EXPORT_SYMBOL_GPL(lbs_debug);
39 module_param_named(libertas_debug, lbs_debug, int, 0644);
40
41
42 /* This global structure is used to send the confirm_sleep command as
43  * fast as possible down to the firmware. */
44 struct cmd_confirm_sleep confirm_sleep;
45
46
47 #define LBS_TX_PWR_DEFAULT              20      /*100mW */
48 #define LBS_TX_PWR_US_DEFAULT           20      /*100mW */
49 #define LBS_TX_PWR_JP_DEFAULT           16      /*50mW */
50 #define LBS_TX_PWR_FR_DEFAULT           20      /*100mW */
51 #define LBS_TX_PWR_EMEA_DEFAULT 20      /*100mW */
52
53 /* Format { channel, frequency (MHz), maxtxpower } */
54 /* band: 'B/G', region: USA FCC/Canada IC */
55 static struct chan_freq_power channel_freq_power_US_BG[] = {
56         {1, 2412, LBS_TX_PWR_US_DEFAULT},
57         {2, 2417, LBS_TX_PWR_US_DEFAULT},
58         {3, 2422, LBS_TX_PWR_US_DEFAULT},
59         {4, 2427, LBS_TX_PWR_US_DEFAULT},
60         {5, 2432, LBS_TX_PWR_US_DEFAULT},
61         {6, 2437, LBS_TX_PWR_US_DEFAULT},
62         {7, 2442, LBS_TX_PWR_US_DEFAULT},
63         {8, 2447, LBS_TX_PWR_US_DEFAULT},
64         {9, 2452, LBS_TX_PWR_US_DEFAULT},
65         {10, 2457, LBS_TX_PWR_US_DEFAULT},
66         {11, 2462, LBS_TX_PWR_US_DEFAULT}
67 };
68
69 /* band: 'B/G', region: Europe ETSI */
70 static struct chan_freq_power channel_freq_power_EU_BG[] = {
71         {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
72         {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
73         {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
74         {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
75         {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
76         {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
77         {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
78         {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
79         {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
80         {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
81         {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
82         {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
83         {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
84 };
85
86 /* band: 'B/G', region: Spain */
87 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
88         {10, 2457, LBS_TX_PWR_DEFAULT},
89         {11, 2462, LBS_TX_PWR_DEFAULT}
90 };
91
92 /* band: 'B/G', region: France */
93 static struct chan_freq_power channel_freq_power_FR_BG[] = {
94         {10, 2457, LBS_TX_PWR_FR_DEFAULT},
95         {11, 2462, LBS_TX_PWR_FR_DEFAULT},
96         {12, 2467, LBS_TX_PWR_FR_DEFAULT},
97         {13, 2472, LBS_TX_PWR_FR_DEFAULT}
98 };
99
100 /* band: 'B/G', region: Japan */
101 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
102         {1, 2412, LBS_TX_PWR_JP_DEFAULT},
103         {2, 2417, LBS_TX_PWR_JP_DEFAULT},
104         {3, 2422, LBS_TX_PWR_JP_DEFAULT},
105         {4, 2427, LBS_TX_PWR_JP_DEFAULT},
106         {5, 2432, LBS_TX_PWR_JP_DEFAULT},
107         {6, 2437, LBS_TX_PWR_JP_DEFAULT},
108         {7, 2442, LBS_TX_PWR_JP_DEFAULT},
109         {8, 2447, LBS_TX_PWR_JP_DEFAULT},
110         {9, 2452, LBS_TX_PWR_JP_DEFAULT},
111         {10, 2457, LBS_TX_PWR_JP_DEFAULT},
112         {11, 2462, LBS_TX_PWR_JP_DEFAULT},
113         {12, 2467, LBS_TX_PWR_JP_DEFAULT},
114         {13, 2472, LBS_TX_PWR_JP_DEFAULT},
115         {14, 2484, LBS_TX_PWR_JP_DEFAULT}
116 };
117
118 /**
119  * the structure for channel, frequency and power
120  */
121 struct region_cfp_table {
122         u8 region;
123         struct chan_freq_power *cfp_BG;
124         int cfp_no_BG;
125 };
126
127 /**
128  * the structure for the mapping between region and CFP
129  */
130 static struct region_cfp_table region_cfp_table[] = {
131         {0x10,                  /*US FCC */
132          channel_freq_power_US_BG,
133          ARRAY_SIZE(channel_freq_power_US_BG),
134          }
135         ,
136         {0x20,                  /*CANADA IC */
137          channel_freq_power_US_BG,
138          ARRAY_SIZE(channel_freq_power_US_BG),
139          }
140         ,
141         {0x30, /*EU*/ channel_freq_power_EU_BG,
142          ARRAY_SIZE(channel_freq_power_EU_BG),
143          }
144         ,
145         {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
146          ARRAY_SIZE(channel_freq_power_SPN_BG),
147          }
148         ,
149         {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
150          ARRAY_SIZE(channel_freq_power_FR_BG),
151          }
152         ,
153         {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
154          ARRAY_SIZE(channel_freq_power_JPN_BG),
155          }
156         ,
157 /*Add new region here */
158 };
159
160 /**
161  * the table to keep region code
162  */
163 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
164     { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
165
166 /**
167  * 802.11b/g supported bitrates (in 500Kb/s units)
168  */
169 u8 lbs_bg_rates[MAX_RATES] =
170     { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
171 0x00, 0x00 };
172
173 /**
174  * FW rate table.  FW refers to rates by their index in this table, not by the
175  * rate value itself.  Values of 0x00 are
176  * reserved positions.
177  */
178 static u8 fw_data_rates[MAX_RATES] =
179     { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
180       0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
181 };
182
183 /**
184  *  @brief use index to get the data rate
185  *
186  *  @param idx                The index of data rate
187  *  @return                     data rate or 0
188  */
189 u32 lbs_fw_index_to_data_rate(u8 idx)
190 {
191         if (idx >= sizeof(fw_data_rates))
192                 idx = 0;
193         return fw_data_rates[idx];
194 }
195
196 /**
197  *  @brief use rate to get the index
198  *
199  *  @param rate                 data rate
200  *  @return                     index or 0
201  */
202 u8 lbs_data_rate_to_fw_index(u32 rate)
203 {
204         u8 i;
205
206         if (!rate)
207                 return 0;
208
209         for (i = 0; i < sizeof(fw_data_rates); i++) {
210                 if (rate == fw_data_rates[i])
211                         return i;
212         }
213         return 0;
214 }
215
216 /**
217  * Attributes exported through sysfs
218  */
219
220 /**
221  * @brief Get function for sysfs attribute anycast_mask
222  */
223 static ssize_t lbs_anycast_get(struct device *dev,
224                 struct device_attribute *attr, char * buf)
225 {
226         struct lbs_private *priv = to_net_dev(dev)->priv;
227         struct cmd_ds_mesh_access mesh_access;
228         int ret;
229
230         memset(&mesh_access, 0, sizeof(mesh_access));
231
232         ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
233         if (ret)
234                 return ret;
235
236         return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
237 }
238
239 /**
240  * @brief Set function for sysfs attribute anycast_mask
241  */
242 static ssize_t lbs_anycast_set(struct device *dev,
243                 struct device_attribute *attr, const char * buf, size_t count)
244 {
245         struct lbs_private *priv = to_net_dev(dev)->priv;
246         struct cmd_ds_mesh_access mesh_access;
247         uint32_t datum;
248         int ret;
249
250         memset(&mesh_access, 0, sizeof(mesh_access));
251         sscanf(buf, "%x", &datum);
252         mesh_access.data[0] = cpu_to_le32(datum);
253
254         ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
255         if (ret)
256                 return ret;
257
258         return strlen(buf);
259 }
260
261 static int lbs_add_rtap(struct lbs_private *priv);
262 static void lbs_remove_rtap(struct lbs_private *priv);
263 static int lbs_add_mesh(struct lbs_private *priv);
264 static void lbs_remove_mesh(struct lbs_private *priv);
265
266
267 /**
268  * Get function for sysfs attribute rtap
269  */
270 static ssize_t lbs_rtap_get(struct device *dev,
271                 struct device_attribute *attr, char * buf)
272 {
273         struct lbs_private *priv = to_net_dev(dev)->priv;
274         return snprintf(buf, 5, "0x%X\n", priv->monitormode);
275 }
276
277 /**
278  *  Set function for sysfs attribute rtap
279  */
280 static ssize_t lbs_rtap_set(struct device *dev,
281                 struct device_attribute *attr, const char * buf, size_t count)
282 {
283         int monitor_mode;
284         struct lbs_private *priv = to_net_dev(dev)->priv;
285
286         sscanf(buf, "%x", &monitor_mode);
287         if (monitor_mode) {
288                 if (priv->monitormode == monitor_mode)
289                         return strlen(buf);
290                 if (!priv->monitormode) {
291                         if (priv->infra_open || priv->mesh_open)
292                                 return -EBUSY;
293                         if (priv->mode == IW_MODE_INFRA)
294                                 lbs_cmd_80211_deauthenticate(priv,
295                                                              priv->curbssparams.bssid,
296                                                              WLAN_REASON_DEAUTH_LEAVING);
297                         else if (priv->mode == IW_MODE_ADHOC)
298                                 lbs_adhoc_stop(priv);
299                         lbs_add_rtap(priv);
300                 }
301                 priv->monitormode = monitor_mode;
302         } else {
303                 if (!priv->monitormode)
304                         return strlen(buf);
305                 priv->monitormode = 0;
306                 lbs_remove_rtap(priv);
307
308                 if (priv->currenttxskb) {
309                         dev_kfree_skb_any(priv->currenttxskb);
310                         priv->currenttxskb = NULL;
311                 }
312
313                 /* Wake queues, command thread, etc. */
314                 lbs_host_to_card_done(priv);
315         }
316
317         lbs_prepare_and_send_command(priv,
318                         CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
319                         CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
320         return strlen(buf);
321 }
322
323 /**
324  * lbs_rtap attribute to be exported per ethX interface
325  * through sysfs (/sys/class/net/ethX/lbs_rtap)
326  */
327 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
328
329 /**
330  * Get function for sysfs attribute mesh
331  */
332 static ssize_t lbs_mesh_get(struct device *dev,
333                 struct device_attribute *attr, char * buf)
334 {
335         struct lbs_private *priv = to_net_dev(dev)->priv;
336         return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
337 }
338
339 /**
340  *  Set function for sysfs attribute mesh
341  */
342 static ssize_t lbs_mesh_set(struct device *dev,
343                 struct device_attribute *attr, const char * buf, size_t count)
344 {
345         struct lbs_private *priv = to_net_dev(dev)->priv;
346         int enable;
347         int ret, action = CMD_ACT_MESH_CONFIG_STOP;
348
349         sscanf(buf, "%x", &enable);
350         enable = !!enable;
351         if (enable == !!priv->mesh_dev)
352                 return count;
353         if (enable)
354                 action = CMD_ACT_MESH_CONFIG_START;
355         ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
356         if (ret)
357                 return ret;
358
359         if (enable)
360                 lbs_add_mesh(priv);
361         else
362                 lbs_remove_mesh(priv);
363
364         return count;
365 }
366
367 /**
368  * lbs_mesh attribute to be exported per ethX interface
369  * through sysfs (/sys/class/net/ethX/lbs_mesh)
370  */
371 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
372
373 /**
374  * anycast_mask attribute to be exported per mshX interface
375  * through sysfs (/sys/class/net/mshX/anycast_mask)
376  */
377 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
378
379 static struct attribute *lbs_mesh_sysfs_entries[] = {
380         &dev_attr_anycast_mask.attr,
381         NULL,
382 };
383
384 static struct attribute_group lbs_mesh_attr_group = {
385         .attrs = lbs_mesh_sysfs_entries,
386 };
387
388 /**
389  *  @brief This function opens the ethX or mshX interface
390  *
391  *  @param dev     A pointer to net_device structure
392  *  @return        0 or -EBUSY if monitor mode active
393  */
394 static int lbs_dev_open(struct net_device *dev)
395 {
396         struct lbs_private *priv = (struct lbs_private *) dev->priv ;
397         int ret = 0;
398
399         lbs_deb_enter(LBS_DEB_NET);
400
401         spin_lock_irq(&priv->driver_lock);
402
403         if (priv->monitormode) {
404                 ret = -EBUSY;
405                 goto out;
406         }
407
408         if (dev == priv->mesh_dev) {
409                 priv->mesh_open = 1;
410                 priv->mesh_connect_status = LBS_CONNECTED;
411                 netif_carrier_on(dev);
412         } else {
413                 priv->infra_open = 1;
414
415                 if (priv->connect_status == LBS_CONNECTED)
416                         netif_carrier_on(dev);
417                 else
418                         netif_carrier_off(dev);
419         }
420
421         if (!priv->tx_pending_len)
422                 netif_wake_queue(dev);
423  out:
424
425         spin_unlock_irq(&priv->driver_lock);
426         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
427         return ret;
428 }
429
430 /**
431  *  @brief This function closes the mshX interface
432  *
433  *  @param dev     A pointer to net_device structure
434  *  @return        0
435  */
436 static int lbs_mesh_stop(struct net_device *dev)
437 {
438         struct lbs_private *priv = (struct lbs_private *) (dev->priv);
439
440         lbs_deb_enter(LBS_DEB_MESH);
441         spin_lock_irq(&priv->driver_lock);
442
443         priv->mesh_open = 0;
444         priv->mesh_connect_status = LBS_DISCONNECTED;
445
446         netif_stop_queue(dev);
447         netif_carrier_off(dev);
448
449         spin_unlock_irq(&priv->driver_lock);
450
451         schedule_work(&priv->mcast_work);
452
453         lbs_deb_leave(LBS_DEB_MESH);
454         return 0;
455 }
456
457 /**
458  *  @brief This function closes the ethX interface
459  *
460  *  @param dev     A pointer to net_device structure
461  *  @return        0
462  */
463 static int lbs_eth_stop(struct net_device *dev)
464 {
465         struct lbs_private *priv = (struct lbs_private *) dev->priv;
466
467         lbs_deb_enter(LBS_DEB_NET);
468
469         spin_lock_irq(&priv->driver_lock);
470         priv->infra_open = 0;
471         netif_stop_queue(dev);
472         spin_unlock_irq(&priv->driver_lock);
473
474         schedule_work(&priv->mcast_work);
475
476         lbs_deb_leave(LBS_DEB_NET);
477         return 0;
478 }
479
480 static void lbs_tx_timeout(struct net_device *dev)
481 {
482         struct lbs_private *priv = (struct lbs_private *) dev->priv;
483
484         lbs_deb_enter(LBS_DEB_TX);
485
486         lbs_pr_err("tx watch dog timeout\n");
487
488         dev->trans_start = jiffies;
489
490         if (priv->currenttxskb)
491                 lbs_send_tx_feedback(priv, 0);
492
493         /* XX: Shouldn't we also call into the hw-specific driver
494            to kick it somehow? */
495         lbs_host_to_card_done(priv);
496
497         /* More often than not, this actually happens because the
498            firmware has crapped itself -- rather than just a very
499            busy medium. So send a harmless command, and if/when
500            _that_ times out, we'll kick it in the head. */
501         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
502                                      0, 0, NULL);
503
504         lbs_deb_leave(LBS_DEB_TX);
505 }
506
507 void lbs_host_to_card_done(struct lbs_private *priv)
508 {
509         unsigned long flags;
510
511         lbs_deb_enter(LBS_DEB_THREAD);
512
513         spin_lock_irqsave(&priv->driver_lock, flags);
514
515         priv->dnld_sent = DNLD_RES_RECEIVED;
516
517         /* Wake main thread if commands are pending */
518         if (!priv->cur_cmd || priv->tx_pending_len > 0)
519                 wake_up_interruptible(&priv->waitq);
520
521         spin_unlock_irqrestore(&priv->driver_lock, flags);
522         lbs_deb_leave(LBS_DEB_THREAD);
523 }
524 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
525
526 /**
527  *  @brief This function returns the network statistics
528  *
529  *  @param dev     A pointer to struct lbs_private structure
530  *  @return        A pointer to net_device_stats structure
531  */
532 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
533 {
534         struct lbs_private *priv = (struct lbs_private *) dev->priv;
535
536         lbs_deb_enter(LBS_DEB_NET);
537         return &priv->stats;
538 }
539
540 static int lbs_set_mac_address(struct net_device *dev, void *addr)
541 {
542         int ret = 0;
543         struct lbs_private *priv = (struct lbs_private *) dev->priv;
544         struct sockaddr *phwaddr = addr;
545         struct cmd_ds_802_11_mac_address cmd;
546
547         lbs_deb_enter(LBS_DEB_NET);
548
549         /* In case it was called from the mesh device */
550         dev = priv->dev;
551
552         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
553         cmd.action = cpu_to_le16(CMD_ACT_SET);
554         memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
555
556         ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
557         if (ret) {
558                 lbs_deb_net("set MAC address failed\n");
559                 goto done;
560         }
561
562         memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
563         memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
564         if (priv->mesh_dev)
565                 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
566
567 done:
568         lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
569         return ret;
570 }
571
572
573 static inline int mac_in_list(unsigned char *list, int list_len,
574                               unsigned char *mac)
575 {
576         while (list_len) {
577                 if (!memcmp(list, mac, ETH_ALEN))
578                         return 1;
579                 list += ETH_ALEN;
580                 list_len--;
581         }
582         return 0;
583 }
584
585
586 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
587                                struct net_device *dev, int nr_addrs)
588 {
589         int i = nr_addrs;
590         struct dev_mc_list *mc_list;
591
592         if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
593                 return nr_addrs;
594
595         netif_addr_lock_bh(dev);
596         for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
597                 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
598                         lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
599                                     mc_list->dmi_addr);
600                         continue;
601                 }
602
603                 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
604                         break;
605                 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
606                 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
607                             mc_list->dmi_addr);
608                 i++;
609         }
610         netif_addr_unlock_bh(dev);
611         if (mc_list)
612                 return -EOVERFLOW;
613
614         return i;
615 }
616
617 static void lbs_set_mcast_worker(struct work_struct *work)
618 {
619         struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
620         struct cmd_ds_mac_multicast_adr mcast_cmd;
621         int dev_flags;
622         int nr_addrs;
623         int old_mac_control = priv->mac_control;
624
625         lbs_deb_enter(LBS_DEB_NET);
626
627         dev_flags = priv->dev->flags;
628         if (priv->mesh_dev)
629                 dev_flags |= priv->mesh_dev->flags;
630
631         if (dev_flags & IFF_PROMISC) {
632                 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
633                 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
634                                        CMD_ACT_MAC_MULTICAST_ENABLE);
635                 goto out_set_mac_control;
636         } else if (dev_flags & IFF_ALLMULTI) {
637         do_allmulti:
638                 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
639                 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
640                                        CMD_ACT_MAC_MULTICAST_ENABLE);
641                 goto out_set_mac_control;
642         }
643
644         /* Once for priv->dev, again for priv->mesh_dev if it exists */
645         nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
646         if (nr_addrs >= 0 && priv->mesh_dev)
647                 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
648         if (nr_addrs < 0)
649                 goto do_allmulti;
650
651         if (nr_addrs) {
652                 int size = offsetof(struct cmd_ds_mac_multicast_adr,
653                                     maclist[6*nr_addrs]);
654
655                 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
656                 mcast_cmd.hdr.size = cpu_to_le16(size);
657                 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
658
659                 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
660
661                 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
662         } else
663                 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
664
665         priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
666                                CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
667  out_set_mac_control:
668         if (priv->mac_control != old_mac_control)
669                 lbs_set_mac_control(priv);
670
671         lbs_deb_leave(LBS_DEB_NET);
672 }
673
674 static void lbs_set_multicast_list(struct net_device *dev)
675 {
676         struct lbs_private *priv = dev->priv;
677
678         schedule_work(&priv->mcast_work);
679 }
680
681 /**
682  *  @brief This function handles the major jobs in the LBS driver.
683  *  It handles all events generated by firmware, RX data received
684  *  from firmware and TX data sent from kernel.
685  *
686  *  @param data    A pointer to lbs_thread structure
687  *  @return        0
688  */
689 static int lbs_thread(void *data)
690 {
691         struct net_device *dev = data;
692         struct lbs_private *priv = dev->priv;
693         wait_queue_t wait;
694
695         lbs_deb_enter(LBS_DEB_THREAD);
696
697         init_waitqueue_entry(&wait, current);
698
699         for (;;) {
700                 int shouldsleep;
701                 u8 resp_idx;
702
703                 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
704                                 priv->currenttxskb, priv->dnld_sent);
705
706                 add_wait_queue(&priv->waitq, &wait);
707                 set_current_state(TASK_INTERRUPTIBLE);
708                 spin_lock_irq(&priv->driver_lock);
709
710                 if (kthread_should_stop())
711                         shouldsleep = 0;        /* Bye */
712                 else if (priv->surpriseremoved)
713                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
714                 else if (priv->psstate == PS_STATE_SLEEP)
715                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
716                 else if (priv->cmd_timed_out)
717                         shouldsleep = 0;        /* Command timed out. Recover */
718                 else if (!priv->fw_ready)
719                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
720                 else if (priv->dnld_sent)
721                         shouldsleep = 1;        /* Something is en route to the device already */
722                 else if (priv->tx_pending_len > 0)
723                         shouldsleep = 0;        /* We've a packet to send */
724                 else if (priv->resp_len[priv->resp_idx])
725                         shouldsleep = 0;        /* We have a command response */
726                 else if (priv->cur_cmd)
727                         shouldsleep = 1;        /* Can't send a command; one already running */
728                 else if (!list_empty(&priv->cmdpendingq))
729                         shouldsleep = 0;        /* We have a command to send */
730                 else if (__kfifo_len(priv->event_fifo))
731                         shouldsleep = 0;        /* We have an event to process */
732                 else
733                         shouldsleep = 1;        /* No command */
734
735                 if (shouldsleep) {
736                         lbs_deb_thread("sleeping, connect_status %d, "
737                                 "psmode %d, psstate %d\n",
738                                 priv->connect_status,
739                                 priv->psmode, priv->psstate);
740                         spin_unlock_irq(&priv->driver_lock);
741                         schedule();
742                 } else
743                         spin_unlock_irq(&priv->driver_lock);
744
745                 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
746                                priv->currenttxskb, priv->dnld_sent);
747
748                 set_current_state(TASK_RUNNING);
749                 remove_wait_queue(&priv->waitq, &wait);
750
751                 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
752                                priv->currenttxskb, priv->dnld_sent);
753
754                 if (kthread_should_stop()) {
755                         lbs_deb_thread("break from main thread\n");
756                         break;
757                 }
758
759                 if (priv->surpriseremoved) {
760                         lbs_deb_thread("adapter removed; waiting to die...\n");
761                         continue;
762                 }
763
764                 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
765                        priv->currenttxskb, priv->dnld_sent);
766
767                 /* Process any pending command response */
768                 spin_lock_irq(&priv->driver_lock);
769                 resp_idx = priv->resp_idx;
770                 if (priv->resp_len[resp_idx]) {
771                         spin_unlock_irq(&priv->driver_lock);
772                         lbs_process_command_response(priv,
773                                 priv->resp_buf[resp_idx],
774                                 priv->resp_len[resp_idx]);
775                         spin_lock_irq(&priv->driver_lock);
776                         priv->resp_len[resp_idx] = 0;
777                 }
778                 spin_unlock_irq(&priv->driver_lock);
779
780                 /* command timeout stuff */
781                 if (priv->cmd_timed_out && priv->cur_cmd) {
782                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
783
784                         if (++priv->nr_retries > 3) {
785                                 lbs_pr_info("Excessive timeouts submitting "
786                                         "command 0x%04x\n",
787                                         le16_to_cpu(cmdnode->cmdbuf->command));
788                                 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
789                                 priv->nr_retries = 0;
790                                 if (priv->reset_card)
791                                         priv->reset_card(priv);
792                         } else {
793                                 priv->cur_cmd = NULL;
794                                 priv->dnld_sent = DNLD_RES_RECEIVED;
795                                 lbs_pr_info("requeueing command 0x%04x due "
796                                         "to timeout (#%d)\n",
797                                         le16_to_cpu(cmdnode->cmdbuf->command),
798                                         priv->nr_retries);
799
800                                 /* Stick it back at the _top_ of the pending queue
801                                    for immediate resubmission */
802                                 list_add(&cmdnode->list, &priv->cmdpendingq);
803                         }
804                 }
805                 priv->cmd_timed_out = 0;
806
807                 /* Process hardware events, e.g. card removed, link lost */
808                 spin_lock_irq(&priv->driver_lock);
809                 while (__kfifo_len(priv->event_fifo)) {
810                         u32 event;
811
812                         __kfifo_get(priv->event_fifo, (unsigned char *) &event,
813                                 sizeof(event));
814                         spin_unlock_irq(&priv->driver_lock);
815                         lbs_process_event(priv, event);
816                         spin_lock_irq(&priv->driver_lock);
817                 }
818                 spin_unlock_irq(&priv->driver_lock);
819
820                 if (!priv->fw_ready)
821                         continue;
822
823                 /* Check if we need to confirm Sleep Request received previously */
824                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
825                     !priv->dnld_sent && !priv->cur_cmd) {
826                         if (priv->connect_status == LBS_CONNECTED) {
827                                 lbs_deb_thread("pre-sleep, currenttxskb %p, "
828                                         "dnld_sent %d, cur_cmd %p\n",
829                                         priv->currenttxskb, priv->dnld_sent,
830                                         priv->cur_cmd);
831
832                                 lbs_ps_confirm_sleep(priv);
833                         } else {
834                                 /* workaround for firmware sending
835                                  * deauth/linkloss event immediately
836                                  * after sleep request; remove this
837                                  * after firmware fixes it
838                                  */
839                                 priv->psstate = PS_STATE_AWAKE;
840                                 lbs_pr_alert("ignore PS_SleepConfirm in "
841                                         "non-connected state\n");
842                         }
843                 }
844
845                 /* The PS state is changed during processing of Sleep Request
846                  * event above
847                  */
848                 if ((priv->psstate == PS_STATE_SLEEP) ||
849                     (priv->psstate == PS_STATE_PRE_SLEEP))
850                         continue;
851
852                 /* Execute the next command */
853                 if (!priv->dnld_sent && !priv->cur_cmd)
854                         lbs_execute_next_command(priv);
855
856                 /* Wake-up command waiters which can't sleep in
857                  * lbs_prepare_and_send_command
858                  */
859                 if (!list_empty(&priv->cmdpendingq))
860                         wake_up_all(&priv->cmd_pending);
861
862                 spin_lock_irq(&priv->driver_lock);
863                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
864                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
865                                                         priv->tx_pending_buf,
866                                                         priv->tx_pending_len);
867                         if (ret) {
868                                 lbs_deb_tx("host_to_card failed %d\n", ret);
869                                 priv->dnld_sent = DNLD_RES_RECEIVED;
870                         }
871                         priv->tx_pending_len = 0;
872                         if (!priv->currenttxskb) {
873                                 /* We can wake the queues immediately if we aren't
874                                    waiting for TX feedback */
875                                 if (priv->connect_status == LBS_CONNECTED)
876                                         netif_wake_queue(priv->dev);
877                                 if (priv->mesh_dev &&
878                                     priv->mesh_connect_status == LBS_CONNECTED)
879                                         netif_wake_queue(priv->mesh_dev);
880                         }
881                 }
882                 spin_unlock_irq(&priv->driver_lock);
883         }
884
885         del_timer(&priv->command_timer);
886         wake_up_all(&priv->cmd_pending);
887
888         lbs_deb_leave(LBS_DEB_THREAD);
889         return 0;
890 }
891
892 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
893                                 struct cmd_header *cmd)
894 {
895         lbs_deb_enter(LBS_DEB_FW);
896
897         netif_device_detach(priv->dev);
898         if (priv->mesh_dev)
899                 netif_device_detach(priv->mesh_dev);
900
901         priv->fw_ready = 0;
902         lbs_deb_leave(LBS_DEB_FW);
903         return 0;
904 }
905
906 int lbs_suspend(struct lbs_private *priv)
907 {
908         struct cmd_header cmd;
909         int ret;
910
911         lbs_deb_enter(LBS_DEB_FW);
912
913         if (priv->wol_criteria == 0xffffffff) {
914                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
915                 return -EINVAL;
916         }
917
918         memset(&cmd, 0, sizeof(cmd));
919
920         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
921                         sizeof(cmd), lbs_suspend_callback, 0);
922         if (ret)
923                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
924
925         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
926         return ret;
927 }
928 EXPORT_SYMBOL_GPL(lbs_suspend);
929
930 void lbs_resume(struct lbs_private *priv)
931 {
932         lbs_deb_enter(LBS_DEB_FW);
933
934         priv->fw_ready = 1;
935
936         /* Firmware doesn't seem to give us RX packets any more
937            until we send it some command. Might as well update */
938         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
939                                      0, 0, NULL);
940
941         netif_device_attach(priv->dev);
942         if (priv->mesh_dev)
943                 netif_device_attach(priv->mesh_dev);
944
945         lbs_deb_leave(LBS_DEB_FW);
946 }
947 EXPORT_SYMBOL_GPL(lbs_resume);
948
949 /**
950  *  @brief This function downloads firmware image, gets
951  *  HW spec from firmware and set basic parameters to
952  *  firmware.
953  *
954  *  @param priv    A pointer to struct lbs_private structure
955  *  @return        0 or -1
956  */
957 static int lbs_setup_firmware(struct lbs_private *priv)
958 {
959         int ret = -1;
960         s16 curlevel = 0, minlevel = 0, maxlevel = 0;
961
962         lbs_deb_enter(LBS_DEB_FW);
963
964         /* Read MAC address from firmware */
965         memset(priv->current_addr, 0xff, ETH_ALEN);
966         ret = lbs_update_hw_spec(priv);
967         if (ret)
968                 goto done;
969
970         /* Read power levels if available */
971         ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
972         if (ret == 0) {
973                 priv->txpower_cur = curlevel;
974                 priv->txpower_min = minlevel;
975                 priv->txpower_max = maxlevel;
976         }
977
978         lbs_set_mac_control(priv);
979 done:
980         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
981         return ret;
982 }
983
984 /**
985  *  This function handles the timeout of command sending.
986  *  It will re-send the same command again.
987  */
988 static void command_timer_fn(unsigned long data)
989 {
990         struct lbs_private *priv = (struct lbs_private *)data;
991         unsigned long flags;
992
993         lbs_deb_enter(LBS_DEB_CMD);
994         spin_lock_irqsave(&priv->driver_lock, flags);
995
996         if (!priv->cur_cmd)
997                 goto out;
998
999         lbs_pr_info("command 0x%04x timed out\n",
1000                 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
1001
1002         priv->cmd_timed_out = 1;
1003         wake_up_interruptible(&priv->waitq);
1004 out:
1005         spin_unlock_irqrestore(&priv->driver_lock, flags);
1006         lbs_deb_leave(LBS_DEB_CMD);
1007 }
1008
1009 static void lbs_sync_channel_worker(struct work_struct *work)
1010 {
1011         struct lbs_private *priv = container_of(work, struct lbs_private,
1012                 sync_channel);
1013
1014         lbs_deb_enter(LBS_DEB_MAIN);
1015         if (lbs_update_channel(priv))
1016                 lbs_pr_info("Channel synchronization failed.");
1017         lbs_deb_leave(LBS_DEB_MAIN);
1018 }
1019
1020
1021 static int lbs_init_adapter(struct lbs_private *priv)
1022 {
1023         size_t bufsize;
1024         int i, ret = 0;
1025
1026         lbs_deb_enter(LBS_DEB_MAIN);
1027
1028         /* Allocate buffer to store the BSSID list */
1029         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1030         priv->networks = kzalloc(bufsize, GFP_KERNEL);
1031         if (!priv->networks) {
1032                 lbs_pr_err("Out of memory allocating beacons\n");
1033                 ret = -1;
1034                 goto out;
1035         }
1036
1037         /* Initialize scan result lists */
1038         INIT_LIST_HEAD(&priv->network_free_list);
1039         INIT_LIST_HEAD(&priv->network_list);
1040         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1041                 list_add_tail(&priv->networks[i].list,
1042                               &priv->network_free_list);
1043         }
1044
1045         memset(priv->current_addr, 0xff, ETH_ALEN);
1046
1047         priv->connect_status = LBS_DISCONNECTED;
1048         priv->mesh_connect_status = LBS_DISCONNECTED;
1049         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1050         priv->mode = IW_MODE_INFRA;
1051         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1052         priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1053         priv->radio_on = 1;
1054         priv->enablehwauto = 1;
1055         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1056         priv->psmode = LBS802_11POWERMODECAM;
1057         priv->psstate = PS_STATE_FULL_POWER;
1058
1059         mutex_init(&priv->lock);
1060
1061         setup_timer(&priv->command_timer, command_timer_fn,
1062                 (unsigned long)priv);
1063
1064         INIT_LIST_HEAD(&priv->cmdfreeq);
1065         INIT_LIST_HEAD(&priv->cmdpendingq);
1066
1067         spin_lock_init(&priv->driver_lock);
1068         init_waitqueue_head(&priv->cmd_pending);
1069
1070         /* Allocate the command buffers */
1071         if (lbs_allocate_cmd_buffer(priv)) {
1072                 lbs_pr_err("Out of memory allocating command buffers\n");
1073                 ret = -ENOMEM;
1074                 goto out;
1075         }
1076         priv->resp_idx = 0;
1077         priv->resp_len[0] = priv->resp_len[1] = 0;
1078
1079         /* Create the event FIFO */
1080         priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1081         if (IS_ERR(priv->event_fifo)) {
1082                 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1083                 ret = -ENOMEM;
1084                 goto out;
1085         }
1086
1087 out:
1088         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1089
1090         return ret;
1091 }
1092
1093 static void lbs_free_adapter(struct lbs_private *priv)
1094 {
1095         lbs_deb_enter(LBS_DEB_MAIN);
1096
1097         lbs_free_cmd_buffer(priv);
1098         if (priv->event_fifo)
1099                 kfifo_free(priv->event_fifo);
1100         del_timer(&priv->command_timer);
1101         kfree(priv->networks);
1102         priv->networks = NULL;
1103
1104         lbs_deb_leave(LBS_DEB_MAIN);
1105 }
1106
1107 /**
1108  * @brief This function adds the card. it will probe the
1109  * card, allocate the lbs_priv and initialize the device.
1110  *
1111  *  @param card    A pointer to card
1112  *  @return        A pointer to struct lbs_private structure
1113  */
1114 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1115 {
1116         struct net_device *dev = NULL;
1117         struct lbs_private *priv = NULL;
1118
1119         lbs_deb_enter(LBS_DEB_MAIN);
1120
1121         /* Allocate an Ethernet device and register it */
1122         dev = alloc_etherdev(sizeof(struct lbs_private));
1123         if (!dev) {
1124                 lbs_pr_err("init ethX device failed\n");
1125                 goto done;
1126         }
1127         priv = dev->priv;
1128
1129         if (lbs_init_adapter(priv)) {
1130                 lbs_pr_err("failed to initialize adapter structure.\n");
1131                 goto err_init_adapter;
1132         }
1133
1134         priv->dev = dev;
1135         priv->card = card;
1136         priv->mesh_open = 0;
1137         priv->infra_open = 0;
1138
1139         /* Setup the OS Interface to our functions */
1140         dev->open = lbs_dev_open;
1141         dev->hard_start_xmit = lbs_hard_start_xmit;
1142         dev->stop = lbs_eth_stop;
1143         dev->set_mac_address = lbs_set_mac_address;
1144         dev->tx_timeout = lbs_tx_timeout;
1145         dev->get_stats = lbs_get_stats;
1146         dev->watchdog_timeo = 5 * HZ;
1147         dev->ethtool_ops = &lbs_ethtool_ops;
1148 #ifdef  WIRELESS_EXT
1149         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1150 #endif
1151         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1152         dev->set_multicast_list = lbs_set_multicast_list;
1153
1154         SET_NETDEV_DEV(dev, dmdev);
1155
1156         priv->rtap_net_dev = NULL;
1157
1158         lbs_deb_thread("Starting main thread...\n");
1159         init_waitqueue_head(&priv->waitq);
1160         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1161         if (IS_ERR(priv->main_thread)) {
1162                 lbs_deb_thread("Error creating main thread.\n");
1163                 goto err_init_adapter;
1164         }
1165
1166         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1167         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1168         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1169         INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1170         INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1171
1172         sprintf(priv->mesh_ssid, "mesh");
1173         priv->mesh_ssid_len = 4;
1174
1175         priv->wol_criteria = 0xffffffff;
1176         priv->wol_gpio = 0xff;
1177
1178         goto done;
1179
1180 err_init_adapter:
1181         lbs_free_adapter(priv);
1182         free_netdev(dev);
1183         priv = NULL;
1184
1185 done:
1186         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1187         return priv;
1188 }
1189 EXPORT_SYMBOL_GPL(lbs_add_card);
1190
1191
1192 void lbs_remove_card(struct lbs_private *priv)
1193 {
1194         struct net_device *dev = priv->dev;
1195         union iwreq_data wrqu;
1196
1197         lbs_deb_enter(LBS_DEB_MAIN);
1198
1199         lbs_remove_mesh(priv);
1200         lbs_remove_rtap(priv);
1201
1202         dev = priv->dev;
1203
1204         cancel_delayed_work_sync(&priv->scan_work);
1205         cancel_delayed_work_sync(&priv->assoc_work);
1206         cancel_work_sync(&priv->mcast_work);
1207
1208         /* worker thread destruction blocks on the in-flight command which
1209          * should have been cleared already in lbs_stop_card().
1210          */
1211         lbs_deb_main("destroying worker thread\n");
1212         destroy_workqueue(priv->work_thread);
1213         lbs_deb_main("done destroying worker thread\n");
1214
1215         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1216                 priv->psmode = LBS802_11POWERMODECAM;
1217                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1218         }
1219
1220         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1221         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1222         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1223
1224         /* Stop the thread servicing the interrupts */
1225         priv->surpriseremoved = 1;
1226         kthread_stop(priv->main_thread);
1227
1228         lbs_free_adapter(priv);
1229
1230         priv->dev = NULL;
1231         free_netdev(dev);
1232
1233         lbs_deb_leave(LBS_DEB_MAIN);
1234 }
1235 EXPORT_SYMBOL_GPL(lbs_remove_card);
1236
1237
1238 int lbs_start_card(struct lbs_private *priv)
1239 {
1240         struct net_device *dev = priv->dev;
1241         int ret = -1;
1242
1243         lbs_deb_enter(LBS_DEB_MAIN);
1244
1245         /* poke the firmware */
1246         ret = lbs_setup_firmware(priv);
1247         if (ret)
1248                 goto done;
1249
1250         /* init 802.11d */
1251         lbs_init_11d(priv);
1252
1253         if (register_netdev(dev)) {
1254                 lbs_pr_err("cannot register ethX device\n");
1255                 goto done;
1256         }
1257
1258         lbs_update_channel(priv);
1259
1260         /* 5.0.16p0 is known to NOT support any mesh */
1261         if (priv->fwrelease > 0x05001000) {
1262                 /* Enable mesh, if supported, and work out which TLV it uses.
1263                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
1264                    0x100 + 37 is the official value used in 5.110.21.pXX
1265                    but we check them in that order because 20.pXX doesn't
1266                    give an error -- it just silently fails. */
1267
1268                 /* 5.110.20.pXX firmware will fail the command if the channel
1269                    doesn't match the existing channel. But only if the TLV
1270                    is correct. If the channel is wrong, _BOTH_ versions will
1271                    give an error to 0x100+291, and allow 0x100+37 to succeed.
1272                    It's just that 5.110.20.pXX will not have done anything
1273                    useful */
1274
1275                 priv->mesh_tlv = 0x100 + 291;
1276                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1277                                     priv->curbssparams.channel)) {
1278                         priv->mesh_tlv = 0x100 + 37;
1279                         if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1280                                             priv->curbssparams.channel))
1281                                 priv->mesh_tlv = 0;
1282                 }
1283                 if (priv->mesh_tlv) {
1284                         lbs_add_mesh(priv);
1285
1286                         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1287                                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1288
1289                         /* While rtap isn't related to mesh, only mesh-enabled
1290                          * firmware implements the rtap functionality via
1291                          * CMD_802_11_MONITOR_MODE.
1292                          */
1293                         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1294                                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1295                 }
1296         }
1297
1298         lbs_debugfs_init_one(priv, dev);
1299
1300         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1301
1302         ret = 0;
1303
1304 done:
1305         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1306         return ret;
1307 }
1308 EXPORT_SYMBOL_GPL(lbs_start_card);
1309
1310
1311 void lbs_stop_card(struct lbs_private *priv)
1312 {
1313         struct net_device *dev = priv->dev;
1314         struct cmd_ctrl_node *cmdnode;
1315         unsigned long flags;
1316
1317         lbs_deb_enter(LBS_DEB_MAIN);
1318
1319         if (!priv)
1320                 goto out;
1321
1322         netif_stop_queue(priv->dev);
1323         netif_carrier_off(priv->dev);
1324
1325         lbs_debugfs_remove_one(priv);
1326         if (priv->mesh_tlv) {
1327                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1328                 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1329         }
1330
1331         /* Delete the timeout of the currently processing command */
1332         del_timer_sync(&priv->command_timer);
1333
1334         /* Flush pending command nodes */
1335         spin_lock_irqsave(&priv->driver_lock, flags);
1336         lbs_deb_main("clearing pending commands\n");
1337         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1338                 cmdnode->result = -ENOENT;
1339                 cmdnode->cmdwaitqwoken = 1;
1340                 wake_up_interruptible(&cmdnode->cmdwait_q);
1341         }
1342
1343         /* Flush the command the card is currently processing */
1344         if (priv->cur_cmd) {
1345                 lbs_deb_main("clearing current command\n");
1346                 priv->cur_cmd->result = -ENOENT;
1347                 priv->cur_cmd->cmdwaitqwoken = 1;
1348                 wake_up_interruptible(&priv->cur_cmd->cmdwait_q);
1349         }
1350         lbs_deb_main("done clearing commands\n");
1351         spin_unlock_irqrestore(&priv->driver_lock, flags);
1352
1353         unregister_netdev(dev);
1354
1355 out:
1356         lbs_deb_leave(LBS_DEB_MAIN);
1357 }
1358 EXPORT_SYMBOL_GPL(lbs_stop_card);
1359
1360
1361 /**
1362  * @brief This function adds mshX interface
1363  *
1364  *  @param priv    A pointer to the struct lbs_private structure
1365  *  @return        0 if successful, -X otherwise
1366  */
1367 static int lbs_add_mesh(struct lbs_private *priv)
1368 {
1369         struct net_device *mesh_dev = NULL;
1370         int ret = 0;
1371
1372         lbs_deb_enter(LBS_DEB_MESH);
1373
1374         /* Allocate a virtual mesh device */
1375         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1376                 lbs_deb_mesh("init mshX device failed\n");
1377                 ret = -ENOMEM;
1378                 goto done;
1379         }
1380         mesh_dev->priv = priv;
1381         priv->mesh_dev = mesh_dev;
1382
1383         mesh_dev->open = lbs_dev_open;
1384         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1385         mesh_dev->stop = lbs_mesh_stop;
1386         mesh_dev->get_stats = lbs_get_stats;
1387         mesh_dev->set_mac_address = lbs_set_mac_address;
1388         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1389         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1390                         sizeof(priv->dev->dev_addr));
1391
1392         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1393
1394 #ifdef  WIRELESS_EXT
1395         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1396 #endif
1397         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1398         mesh_dev->set_multicast_list = lbs_set_multicast_list;
1399         /* Register virtual mesh interface */
1400         ret = register_netdev(mesh_dev);
1401         if (ret) {
1402                 lbs_pr_err("cannot register mshX virtual interface\n");
1403                 goto err_free;
1404         }
1405
1406         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1407         if (ret)
1408                 goto err_unregister;
1409
1410         lbs_persist_config_init(mesh_dev);
1411
1412         /* Everything successful */
1413         ret = 0;
1414         goto done;
1415
1416 err_unregister:
1417         unregister_netdev(mesh_dev);
1418
1419 err_free:
1420         free_netdev(mesh_dev);
1421
1422 done:
1423         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1424         return ret;
1425 }
1426
1427 static void lbs_remove_mesh(struct lbs_private *priv)
1428 {
1429         struct net_device *mesh_dev;
1430
1431
1432         mesh_dev = priv->mesh_dev;
1433         if (!mesh_dev)
1434                 return;
1435
1436         lbs_deb_enter(LBS_DEB_MESH);
1437         netif_stop_queue(mesh_dev);
1438         netif_carrier_off(mesh_dev);
1439         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1440         lbs_persist_config_remove(mesh_dev);
1441         unregister_netdev(mesh_dev);
1442         priv->mesh_dev = NULL;
1443         free_netdev(mesh_dev);
1444         lbs_deb_leave(LBS_DEB_MESH);
1445 }
1446
1447 /**
1448  *  @brief This function finds the CFP in
1449  *  region_cfp_table based on region and band parameter.
1450  *
1451  *  @param region  The region code
1452  *  @param band    The band
1453  *  @param cfp_no  A pointer to CFP number
1454  *  @return        A pointer to CFP
1455  */
1456 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1457 {
1458         int i, end;
1459
1460         lbs_deb_enter(LBS_DEB_MAIN);
1461
1462         end = ARRAY_SIZE(region_cfp_table);
1463
1464         for (i = 0; i < end ; i++) {
1465                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1466                         region_cfp_table[i].region);
1467                 if (region_cfp_table[i].region == region) {
1468                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1469                         lbs_deb_leave(LBS_DEB_MAIN);
1470                         return region_cfp_table[i].cfp_BG;
1471                 }
1472         }
1473
1474         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1475         return NULL;
1476 }
1477
1478 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1479 {
1480         int ret = 0;
1481         int i = 0;
1482
1483         struct chan_freq_power *cfp;
1484         int cfp_no;
1485
1486         lbs_deb_enter(LBS_DEB_MAIN);
1487
1488         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1489
1490         cfp = lbs_get_region_cfp_table(region, &cfp_no);
1491         if (cfp != NULL) {
1492                 priv->region_channel[i].nrcfp = cfp_no;
1493                 priv->region_channel[i].CFP = cfp;
1494         } else {
1495                 lbs_deb_main("wrong region code %#x in band B/G\n",
1496                        region);
1497                 ret = -1;
1498                 goto out;
1499         }
1500         priv->region_channel[i].valid = 1;
1501         priv->region_channel[i].region = region;
1502         priv->region_channel[i].band = band;
1503         i++;
1504 out:
1505         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1506         return ret;
1507 }
1508
1509 void lbs_queue_event(struct lbs_private *priv, u32 event)
1510 {
1511         unsigned long flags;
1512
1513         lbs_deb_enter(LBS_DEB_THREAD);
1514         spin_lock_irqsave(&priv->driver_lock, flags);
1515
1516         if (priv->psstate == PS_STATE_SLEEP)
1517                 priv->psstate = PS_STATE_AWAKE;
1518
1519         __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1520
1521         wake_up_interruptible(&priv->waitq);
1522
1523         spin_unlock_irqrestore(&priv->driver_lock, flags);
1524         lbs_deb_leave(LBS_DEB_THREAD);
1525 }
1526 EXPORT_SYMBOL_GPL(lbs_queue_event);
1527
1528 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1529 {
1530         lbs_deb_enter(LBS_DEB_THREAD);
1531
1532         if (priv->psstate == PS_STATE_SLEEP)
1533                 priv->psstate = PS_STATE_AWAKE;
1534
1535         /* Swap buffers by flipping the response index */
1536         BUG_ON(resp_idx > 1);
1537         priv->resp_idx = resp_idx;
1538
1539         wake_up_interruptible(&priv->waitq);
1540
1541         lbs_deb_leave(LBS_DEB_THREAD);
1542 }
1543 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1544
1545 static int __init lbs_init_module(void)
1546 {
1547         lbs_deb_enter(LBS_DEB_MAIN);
1548         memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1549         confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1550         confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1551         confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1552         lbs_debugfs_init();
1553         lbs_deb_leave(LBS_DEB_MAIN);
1554         return 0;
1555 }
1556
1557 static void __exit lbs_exit_module(void)
1558 {
1559         lbs_deb_enter(LBS_DEB_MAIN);
1560         lbs_debugfs_remove();
1561         lbs_deb_leave(LBS_DEB_MAIN);
1562 }
1563
1564 /*
1565  * rtap interface support fuctions
1566  */
1567
1568 static int lbs_rtap_open(struct net_device *dev)
1569 {
1570         /* Yes, _stop_ the queue. Because we don't support injection */
1571         lbs_deb_enter(LBS_DEB_MAIN);
1572         netif_carrier_off(dev);
1573         netif_stop_queue(dev);
1574         lbs_deb_leave(LBS_DEB_LEAVE);
1575         return 0;
1576 }
1577
1578 static int lbs_rtap_stop(struct net_device *dev)
1579 {
1580         lbs_deb_enter(LBS_DEB_MAIN);
1581         lbs_deb_leave(LBS_DEB_MAIN);
1582         return 0;
1583 }
1584
1585 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1586 {
1587         netif_stop_queue(dev);
1588         return NETDEV_TX_BUSY;
1589 }
1590
1591 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1592 {
1593         struct lbs_private *priv = dev->priv;
1594         lbs_deb_enter(LBS_DEB_NET);
1595         return &priv->stats;
1596 }
1597
1598
1599 static void lbs_remove_rtap(struct lbs_private *priv)
1600 {
1601         lbs_deb_enter(LBS_DEB_MAIN);
1602         if (priv->rtap_net_dev == NULL)
1603                 goto out;
1604         unregister_netdev(priv->rtap_net_dev);
1605         free_netdev(priv->rtap_net_dev);
1606         priv->rtap_net_dev = NULL;
1607 out:
1608         lbs_deb_leave(LBS_DEB_MAIN);
1609 }
1610
1611 static int lbs_add_rtap(struct lbs_private *priv)
1612 {
1613         int ret = 0;
1614         struct net_device *rtap_dev;
1615
1616         lbs_deb_enter(LBS_DEB_MAIN);
1617         if (priv->rtap_net_dev) {
1618                 ret = -EPERM;
1619                 goto out;
1620         }
1621
1622         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1623         if (rtap_dev == NULL) {
1624                 ret = -ENOMEM;
1625                 goto out;
1626         }
1627
1628         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1629         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1630         rtap_dev->open = lbs_rtap_open;
1631         rtap_dev->stop = lbs_rtap_stop;
1632         rtap_dev->get_stats = lbs_rtap_get_stats;
1633         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1634         rtap_dev->priv = priv;
1635         SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1636
1637         ret = register_netdev(rtap_dev);
1638         if (ret) {
1639                 free_netdev(rtap_dev);
1640                 goto out;
1641         }
1642         priv->rtap_net_dev = rtap_dev;
1643
1644 out:
1645         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1646         return ret;
1647 }
1648
1649 #ifndef CONFIG_IEEE80211
1650 const char *escape_essid(const char *essid, u8 essid_len)
1651 {
1652         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1653         const char *s = essid;
1654         char *d = escaped;
1655
1656         if (ieee80211_is_empty_essid(essid, essid_len)) {
1657                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1658                 return escaped;
1659         }
1660
1661         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1662         while (essid_len--) {
1663                 if (*s == '\0') {
1664                         *d++ = '\\';
1665                         *d++ = '0';
1666                         s++;
1667                 } else {
1668                         *d++ = *s++;
1669                 }
1670         }
1671         *d = '\0';
1672         return escaped;
1673 }
1674 #endif
1675
1676 module_init(lbs_init_module);
1677 module_exit(lbs_exit_module);
1678
1679 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1680 MODULE_AUTHOR("Marvell International Ltd.");
1681 MODULE_LICENSE("GPL");