netdev: Add netdev->addr_list_lock protection.
[linux-2.6.git] / 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         }
301
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         DECLARE_MAC_BUF(mac);
592
593         if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
594                 return nr_addrs;
595
596         netif_tx_lock_bh(dev);
597         netif_addr_lock(dev);
598         for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
599                 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
600                         lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
601                                     print_mac(mac, mc_list->dmi_addr));
602                         continue;
603                 }
604
605                 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
606                         break;
607                 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
608                 lbs_deb_net("mcast address %s:%s added to filter\n", dev->name,
609                             print_mac(mac, mc_list->dmi_addr));
610                 i++;
611         }
612         netif_addr_unlock(dev);
613         netif_tx_unlock_bh(dev);
614         if (mc_list)
615                 return -EOVERFLOW;
616
617         return i;
618 }
619
620 static void lbs_set_mcast_worker(struct work_struct *work)
621 {
622         struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
623         struct cmd_ds_mac_multicast_adr mcast_cmd;
624         int dev_flags;
625         int nr_addrs;
626         int old_mac_control = priv->mac_control;
627
628         lbs_deb_enter(LBS_DEB_NET);
629
630         dev_flags = priv->dev->flags;
631         if (priv->mesh_dev)
632                 dev_flags |= priv->mesh_dev->flags;
633
634         if (dev_flags & IFF_PROMISC) {
635                 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
636                 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
637                                        CMD_ACT_MAC_MULTICAST_ENABLE);
638                 goto out_set_mac_control;
639         } else if (dev_flags & IFF_ALLMULTI) {
640         do_allmulti:
641                 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
642                 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
643                                        CMD_ACT_MAC_MULTICAST_ENABLE);
644                 goto out_set_mac_control;
645         }
646
647         /* Once for priv->dev, again for priv->mesh_dev if it exists */
648         nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
649         if (nr_addrs >= 0 && priv->mesh_dev)
650                 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
651         if (nr_addrs < 0)
652                 goto do_allmulti;
653
654         if (nr_addrs) {
655                 int size = offsetof(struct cmd_ds_mac_multicast_adr,
656                                     maclist[6*nr_addrs]);
657
658                 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
659                 mcast_cmd.hdr.size = cpu_to_le16(size);
660                 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
661
662                 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
663
664                 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
665         } else
666                 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
667
668         priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
669                                CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
670  out_set_mac_control:
671         if (priv->mac_control != old_mac_control)
672                 lbs_set_mac_control(priv);
673
674         lbs_deb_leave(LBS_DEB_NET);
675 }
676
677 static void lbs_set_multicast_list(struct net_device *dev)
678 {
679         struct lbs_private *priv = dev->priv;
680
681         schedule_work(&priv->mcast_work);
682 }
683
684 /**
685  *  @brief This function handles the major jobs in the LBS driver.
686  *  It handles all events generated by firmware, RX data received
687  *  from firmware and TX data sent from kernel.
688  *
689  *  @param data    A pointer to lbs_thread structure
690  *  @return        0
691  */
692 static int lbs_thread(void *data)
693 {
694         struct net_device *dev = data;
695         struct lbs_private *priv = dev->priv;
696         wait_queue_t wait;
697
698         lbs_deb_enter(LBS_DEB_THREAD);
699
700         init_waitqueue_entry(&wait, current);
701
702         for (;;) {
703                 int shouldsleep;
704                 u8 resp_idx;
705
706                 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
707                                 priv->currenttxskb, priv->dnld_sent);
708
709                 add_wait_queue(&priv->waitq, &wait);
710                 set_current_state(TASK_INTERRUPTIBLE);
711                 spin_lock_irq(&priv->driver_lock);
712
713                 if (kthread_should_stop())
714                         shouldsleep = 0;        /* Bye */
715                 else if (priv->surpriseremoved)
716                         shouldsleep = 1;        /* We need to wait until we're _told_ to die */
717                 else if (priv->psstate == PS_STATE_SLEEP)
718                         shouldsleep = 1;        /* Sleep mode. Nothing we can do till it wakes */
719                 else if (priv->cmd_timed_out)
720                         shouldsleep = 0;        /* Command timed out. Recover */
721                 else if (!priv->fw_ready)
722                         shouldsleep = 1;        /* Firmware not ready. We're waiting for it */
723                 else if (priv->dnld_sent)
724                         shouldsleep = 1;        /* Something is en route to the device already */
725                 else if (priv->tx_pending_len > 0)
726                         shouldsleep = 0;        /* We've a packet to send */
727                 else if (priv->resp_len[priv->resp_idx])
728                         shouldsleep = 0;        /* We have a command response */
729                 else if (priv->cur_cmd)
730                         shouldsleep = 1;        /* Can't send a command; one already running */
731                 else if (!list_empty(&priv->cmdpendingq))
732                         shouldsleep = 0;        /* We have a command to send */
733                 else if (__kfifo_len(priv->event_fifo))
734                         shouldsleep = 0;        /* We have an event to process */
735                 else
736                         shouldsleep = 1;        /* No command */
737
738                 if (shouldsleep) {
739                         lbs_deb_thread("sleeping, connect_status %d, "
740                                 "psmode %d, psstate %d\n",
741                                 priv->connect_status,
742                                 priv->psmode, priv->psstate);
743                         spin_unlock_irq(&priv->driver_lock);
744                         schedule();
745                 } else
746                         spin_unlock_irq(&priv->driver_lock);
747
748                 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
749                                priv->currenttxskb, priv->dnld_sent);
750
751                 set_current_state(TASK_RUNNING);
752                 remove_wait_queue(&priv->waitq, &wait);
753
754                 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
755                                priv->currenttxskb, priv->dnld_sent);
756
757                 if (kthread_should_stop()) {
758                         lbs_deb_thread("break from main thread\n");
759                         break;
760                 }
761
762                 if (priv->surpriseremoved) {
763                         lbs_deb_thread("adapter removed; waiting to die...\n");
764                         continue;
765                 }
766
767                 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
768                        priv->currenttxskb, priv->dnld_sent);
769
770                 /* Process any pending command response */
771                 spin_lock_irq(&priv->driver_lock);
772                 resp_idx = priv->resp_idx;
773                 if (priv->resp_len[resp_idx]) {
774                         spin_unlock_irq(&priv->driver_lock);
775                         lbs_process_command_response(priv,
776                                 priv->resp_buf[resp_idx],
777                                 priv->resp_len[resp_idx]);
778                         spin_lock_irq(&priv->driver_lock);
779                         priv->resp_len[resp_idx] = 0;
780                 }
781                 spin_unlock_irq(&priv->driver_lock);
782
783                 /* command timeout stuff */
784                 if (priv->cmd_timed_out && priv->cur_cmd) {
785                         struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
786
787                         if (++priv->nr_retries > 3) {
788                                 lbs_pr_info("Excessive timeouts submitting "
789                                         "command 0x%04x\n",
790                                         le16_to_cpu(cmdnode->cmdbuf->command));
791                                 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
792                                 priv->nr_retries = 0;
793                                 if (priv->reset_card)
794                                         priv->reset_card(priv);
795                         } else {
796                                 priv->cur_cmd = NULL;
797                                 priv->dnld_sent = DNLD_RES_RECEIVED;
798                                 lbs_pr_info("requeueing command 0x%04x due "
799                                         "to timeout (#%d)\n",
800                                         le16_to_cpu(cmdnode->cmdbuf->command),
801                                         priv->nr_retries);
802
803                                 /* Stick it back at the _top_ of the pending queue
804                                    for immediate resubmission */
805                                 list_add(&cmdnode->list, &priv->cmdpendingq);
806                         }
807                 }
808                 priv->cmd_timed_out = 0;
809
810                 /* Process hardware events, e.g. card removed, link lost */
811                 spin_lock_irq(&priv->driver_lock);
812                 while (__kfifo_len(priv->event_fifo)) {
813                         u32 event;
814
815                         __kfifo_get(priv->event_fifo, (unsigned char *) &event,
816                                 sizeof(event));
817                         spin_unlock_irq(&priv->driver_lock);
818                         lbs_process_event(priv, event);
819                         spin_lock_irq(&priv->driver_lock);
820                 }
821                 spin_unlock_irq(&priv->driver_lock);
822
823                 if (!priv->fw_ready)
824                         continue;
825
826                 /* Check if we need to confirm Sleep Request received previously */
827                 if (priv->psstate == PS_STATE_PRE_SLEEP &&
828                     !priv->dnld_sent && !priv->cur_cmd) {
829                         if (priv->connect_status == LBS_CONNECTED) {
830                                 lbs_deb_thread("pre-sleep, currenttxskb %p, "
831                                         "dnld_sent %d, cur_cmd %p\n",
832                                         priv->currenttxskb, priv->dnld_sent,
833                                         priv->cur_cmd);
834
835                                 lbs_ps_confirm_sleep(priv);
836                         } else {
837                                 /* workaround for firmware sending
838                                  * deauth/linkloss event immediately
839                                  * after sleep request; remove this
840                                  * after firmware fixes it
841                                  */
842                                 priv->psstate = PS_STATE_AWAKE;
843                                 lbs_pr_alert("ignore PS_SleepConfirm in "
844                                         "non-connected state\n");
845                         }
846                 }
847
848                 /* The PS state is changed during processing of Sleep Request
849                  * event above
850                  */
851                 if ((priv->psstate == PS_STATE_SLEEP) ||
852                     (priv->psstate == PS_STATE_PRE_SLEEP))
853                         continue;
854
855                 /* Execute the next command */
856                 if (!priv->dnld_sent && !priv->cur_cmd)
857                         lbs_execute_next_command(priv);
858
859                 /* Wake-up command waiters which can't sleep in
860                  * lbs_prepare_and_send_command
861                  */
862                 if (!list_empty(&priv->cmdpendingq))
863                         wake_up_all(&priv->cmd_pending);
864
865                 spin_lock_irq(&priv->driver_lock);
866                 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
867                         int ret = priv->hw_host_to_card(priv, MVMS_DAT,
868                                                         priv->tx_pending_buf,
869                                                         priv->tx_pending_len);
870                         if (ret) {
871                                 lbs_deb_tx("host_to_card failed %d\n", ret);
872                                 priv->dnld_sent = DNLD_RES_RECEIVED;
873                         }
874                         priv->tx_pending_len = 0;
875                         if (!priv->currenttxskb) {
876                                 /* We can wake the queues immediately if we aren't
877                                    waiting for TX feedback */
878                                 if (priv->connect_status == LBS_CONNECTED)
879                                         netif_wake_queue(priv->dev);
880                                 if (priv->mesh_dev &&
881                                     priv->mesh_connect_status == LBS_CONNECTED)
882                                         netif_wake_queue(priv->mesh_dev);
883                         }
884                 }
885                 spin_unlock_irq(&priv->driver_lock);
886         }
887
888         del_timer(&priv->command_timer);
889         wake_up_all(&priv->cmd_pending);
890
891         lbs_deb_leave(LBS_DEB_THREAD);
892         return 0;
893 }
894
895 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
896                                 struct cmd_header *cmd)
897 {
898         lbs_deb_enter(LBS_DEB_FW);
899
900         netif_device_detach(priv->dev);
901         if (priv->mesh_dev)
902                 netif_device_detach(priv->mesh_dev);
903
904         priv->fw_ready = 0;
905         lbs_deb_leave(LBS_DEB_FW);
906         return 0;
907 }
908
909 int lbs_suspend(struct lbs_private *priv)
910 {
911         struct cmd_header cmd;
912         int ret;
913
914         lbs_deb_enter(LBS_DEB_FW);
915
916         if (priv->wol_criteria == 0xffffffff) {
917                 lbs_pr_info("Suspend attempt without configuring wake params!\n");
918                 return -EINVAL;
919         }
920
921         memset(&cmd, 0, sizeof(cmd));
922
923         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
924                         sizeof(cmd), lbs_suspend_callback, 0);
925         if (ret)
926                 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
927
928         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
929         return ret;
930 }
931 EXPORT_SYMBOL_GPL(lbs_suspend);
932
933 void lbs_resume(struct lbs_private *priv)
934 {
935         lbs_deb_enter(LBS_DEB_FW);
936
937         priv->fw_ready = 1;
938
939         /* Firmware doesn't seem to give us RX packets any more
940            until we send it some command. Might as well update */
941         lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
942                                      0, 0, NULL);
943
944         netif_device_attach(priv->dev);
945         if (priv->mesh_dev)
946                 netif_device_attach(priv->mesh_dev);
947
948         lbs_deb_leave(LBS_DEB_FW);
949 }
950 EXPORT_SYMBOL_GPL(lbs_resume);
951
952 /**
953  *  @brief This function downloads firmware image, gets
954  *  HW spec from firmware and set basic parameters to
955  *  firmware.
956  *
957  *  @param priv    A pointer to struct lbs_private structure
958  *  @return        0 or -1
959  */
960 static int lbs_setup_firmware(struct lbs_private *priv)
961 {
962         int ret = -1;
963
964         lbs_deb_enter(LBS_DEB_FW);
965
966         /*
967          * Read MAC address from HW
968          */
969         memset(priv->current_addr, 0xff, ETH_ALEN);
970         ret = lbs_update_hw_spec(priv);
971         if (ret)
972                 goto done;
973
974         lbs_set_mac_control(priv);
975 done:
976         lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
977         return ret;
978 }
979
980 /**
981  *  This function handles the timeout of command sending.
982  *  It will re-send the same command again.
983  */
984 static void command_timer_fn(unsigned long data)
985 {
986         struct lbs_private *priv = (struct lbs_private *)data;
987         unsigned long flags;
988
989         lbs_deb_enter(LBS_DEB_CMD);
990         spin_lock_irqsave(&priv->driver_lock, flags);
991
992         if (!priv->cur_cmd)
993                 goto out;
994
995         lbs_pr_info("command 0x%04x timed out\n",
996                 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
997
998         priv->cmd_timed_out = 1;
999         wake_up_interruptible(&priv->waitq);
1000 out:
1001         spin_unlock_irqrestore(&priv->driver_lock, flags);
1002         lbs_deb_leave(LBS_DEB_CMD);
1003 }
1004
1005 static void lbs_sync_channel_worker(struct work_struct *work)
1006 {
1007         struct lbs_private *priv = container_of(work, struct lbs_private,
1008                 sync_channel);
1009
1010         lbs_deb_enter(LBS_DEB_MAIN);
1011         if (lbs_update_channel(priv))
1012                 lbs_pr_info("Channel synchronization failed.");
1013         lbs_deb_leave(LBS_DEB_MAIN);
1014 }
1015
1016
1017 static int lbs_init_adapter(struct lbs_private *priv)
1018 {
1019         size_t bufsize;
1020         int i, ret = 0;
1021
1022         lbs_deb_enter(LBS_DEB_MAIN);
1023
1024         /* Allocate buffer to store the BSSID list */
1025         bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1026         priv->networks = kzalloc(bufsize, GFP_KERNEL);
1027         if (!priv->networks) {
1028                 lbs_pr_err("Out of memory allocating beacons\n");
1029                 ret = -1;
1030                 goto out;
1031         }
1032
1033         /* Initialize scan result lists */
1034         INIT_LIST_HEAD(&priv->network_free_list);
1035         INIT_LIST_HEAD(&priv->network_list);
1036         for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1037                 list_add_tail(&priv->networks[i].list,
1038                               &priv->network_free_list);
1039         }
1040
1041         memset(priv->current_addr, 0xff, ETH_ALEN);
1042
1043         priv->connect_status = LBS_DISCONNECTED;
1044         priv->mesh_connect_status = LBS_DISCONNECTED;
1045         priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1046         priv->mode = IW_MODE_INFRA;
1047         priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1048         priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1049         priv->radioon = RADIO_ON;
1050         priv->enablehwauto = 1;
1051         priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1052         priv->psmode = LBS802_11POWERMODECAM;
1053         priv->psstate = PS_STATE_FULL_POWER;
1054
1055         mutex_init(&priv->lock);
1056
1057         setup_timer(&priv->command_timer, command_timer_fn,
1058                 (unsigned long)priv);
1059
1060         INIT_LIST_HEAD(&priv->cmdfreeq);
1061         INIT_LIST_HEAD(&priv->cmdpendingq);
1062
1063         spin_lock_init(&priv->driver_lock);
1064         init_waitqueue_head(&priv->cmd_pending);
1065
1066         /* Allocate the command buffers */
1067         if (lbs_allocate_cmd_buffer(priv)) {
1068                 lbs_pr_err("Out of memory allocating command buffers\n");
1069                 ret = -ENOMEM;
1070                 goto out;
1071         }
1072         priv->resp_idx = 0;
1073         priv->resp_len[0] = priv->resp_len[1] = 0;
1074
1075         /* Create the event FIFO */
1076         priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1077         if (IS_ERR(priv->event_fifo)) {
1078                 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1079                 ret = -ENOMEM;
1080                 goto out;
1081         }
1082
1083 out:
1084         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1085
1086         return ret;
1087 }
1088
1089 static void lbs_free_adapter(struct lbs_private *priv)
1090 {
1091         lbs_deb_enter(LBS_DEB_MAIN);
1092
1093         lbs_free_cmd_buffer(priv);
1094         if (priv->event_fifo)
1095                 kfifo_free(priv->event_fifo);
1096         del_timer(&priv->command_timer);
1097         kfree(priv->networks);
1098         priv->networks = NULL;
1099
1100         lbs_deb_leave(LBS_DEB_MAIN);
1101 }
1102
1103 /**
1104  * @brief This function adds the card. it will probe the
1105  * card, allocate the lbs_priv and initialize the device.
1106  *
1107  *  @param card    A pointer to card
1108  *  @return        A pointer to struct lbs_private structure
1109  */
1110 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1111 {
1112         struct net_device *dev = NULL;
1113         struct lbs_private *priv = NULL;
1114
1115         lbs_deb_enter(LBS_DEB_MAIN);
1116
1117         /* Allocate an Ethernet device and register it */
1118         dev = alloc_etherdev(sizeof(struct lbs_private));
1119         if (!dev) {
1120                 lbs_pr_err("init ethX device failed\n");
1121                 goto done;
1122         }
1123         priv = dev->priv;
1124
1125         if (lbs_init_adapter(priv)) {
1126                 lbs_pr_err("failed to initialize adapter structure.\n");
1127                 goto err_init_adapter;
1128         }
1129
1130         priv->dev = dev;
1131         priv->card = card;
1132         priv->mesh_open = 0;
1133         priv->infra_open = 0;
1134
1135         /* Setup the OS Interface to our functions */
1136         dev->open = lbs_dev_open;
1137         dev->hard_start_xmit = lbs_hard_start_xmit;
1138         dev->stop = lbs_eth_stop;
1139         dev->set_mac_address = lbs_set_mac_address;
1140         dev->tx_timeout = lbs_tx_timeout;
1141         dev->get_stats = lbs_get_stats;
1142         dev->watchdog_timeo = 5 * HZ;
1143         dev->ethtool_ops = &lbs_ethtool_ops;
1144 #ifdef  WIRELESS_EXT
1145         dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1146 #endif
1147         dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1148         dev->set_multicast_list = lbs_set_multicast_list;
1149
1150         SET_NETDEV_DEV(dev, dmdev);
1151
1152         priv->rtap_net_dev = NULL;
1153
1154         lbs_deb_thread("Starting main thread...\n");
1155         init_waitqueue_head(&priv->waitq);
1156         priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1157         if (IS_ERR(priv->main_thread)) {
1158                 lbs_deb_thread("Error creating main thread.\n");
1159                 goto err_init_adapter;
1160         }
1161
1162         priv->work_thread = create_singlethread_workqueue("lbs_worker");
1163         INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1164         INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1165         INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1166         INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1167
1168         sprintf(priv->mesh_ssid, "mesh");
1169         priv->mesh_ssid_len = 4;
1170
1171         priv->wol_criteria = 0xffffffff;
1172         priv->wol_gpio = 0xff;
1173
1174         goto done;
1175
1176 err_init_adapter:
1177         lbs_free_adapter(priv);
1178         free_netdev(dev);
1179         priv = NULL;
1180
1181 done:
1182         lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1183         return priv;
1184 }
1185 EXPORT_SYMBOL_GPL(lbs_add_card);
1186
1187
1188 void lbs_remove_card(struct lbs_private *priv)
1189 {
1190         struct net_device *dev = priv->dev;
1191         union iwreq_data wrqu;
1192
1193         lbs_deb_enter(LBS_DEB_MAIN);
1194
1195         lbs_remove_mesh(priv);
1196         lbs_remove_rtap(priv);
1197
1198         dev = priv->dev;
1199
1200         cancel_delayed_work_sync(&priv->scan_work);
1201         cancel_delayed_work_sync(&priv->assoc_work);
1202         cancel_work_sync(&priv->mcast_work);
1203         destroy_workqueue(priv->work_thread);
1204
1205         if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1206                 priv->psmode = LBS802_11POWERMODECAM;
1207                 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1208         }
1209
1210         memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1211         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1212         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1213
1214         /* Stop the thread servicing the interrupts */
1215         priv->surpriseremoved = 1;
1216         kthread_stop(priv->main_thread);
1217
1218         lbs_free_adapter(priv);
1219
1220         priv->dev = NULL;
1221         free_netdev(dev);
1222
1223         lbs_deb_leave(LBS_DEB_MAIN);
1224 }
1225 EXPORT_SYMBOL_GPL(lbs_remove_card);
1226
1227
1228 int lbs_start_card(struct lbs_private *priv)
1229 {
1230         struct net_device *dev = priv->dev;
1231         int ret = -1;
1232
1233         lbs_deb_enter(LBS_DEB_MAIN);
1234
1235         /* poke the firmware */
1236         ret = lbs_setup_firmware(priv);
1237         if (ret)
1238                 goto done;
1239
1240         /* init 802.11d */
1241         lbs_init_11d(priv);
1242
1243         if (register_netdev(dev)) {
1244                 lbs_pr_err("cannot register ethX device\n");
1245                 goto done;
1246         }
1247         if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1248                 lbs_pr_err("cannot register lbs_rtap attribute\n");
1249
1250         lbs_update_channel(priv);
1251
1252         /* 5.0.16p0 is known to NOT support any mesh */
1253         if (priv->fwrelease > 0x05001000) {
1254                 /* Enable mesh, if supported, and work out which TLV it uses.
1255                    0x100 + 291 is an unofficial value used in 5.110.20.pXX
1256                    0x100 + 37 is the official value used in 5.110.21.pXX
1257                    but we check them in that order because 20.pXX doesn't
1258                    give an error -- it just silently fails. */
1259
1260                 /* 5.110.20.pXX firmware will fail the command if the channel
1261                    doesn't match the existing channel. But only if the TLV
1262                    is correct. If the channel is wrong, _BOTH_ versions will
1263                    give an error to 0x100+291, and allow 0x100+37 to succeed.
1264                    It's just that 5.110.20.pXX will not have done anything
1265                    useful */
1266
1267                 priv->mesh_tlv = 0x100 + 291;
1268                 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1269                                     priv->curbssparams.channel)) {
1270                         priv->mesh_tlv = 0x100 + 37;
1271                         if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1272                                             priv->curbssparams.channel))
1273                                 priv->mesh_tlv = 0;
1274                 }
1275                 if (priv->mesh_tlv) {
1276                         lbs_add_mesh(priv);
1277
1278                         if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1279                                 lbs_pr_err("cannot register lbs_mesh attribute\n");
1280                 }
1281         }
1282
1283         lbs_debugfs_init_one(priv, dev);
1284
1285         lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1286
1287         ret = 0;
1288
1289 done:
1290         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1291         return ret;
1292 }
1293 EXPORT_SYMBOL_GPL(lbs_start_card);
1294
1295
1296 void lbs_stop_card(struct lbs_private *priv)
1297 {
1298         struct net_device *dev = priv->dev;
1299         struct cmd_ctrl_node *cmdnode;
1300         unsigned long flags;
1301
1302         lbs_deb_enter(LBS_DEB_MAIN);
1303
1304         if (!priv)
1305                 goto out;
1306
1307         netif_stop_queue(priv->dev);
1308         netif_carrier_off(priv->dev);
1309
1310         lbs_debugfs_remove_one(priv);
1311         device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1312         if (priv->mesh_tlv) {
1313                 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1314         }
1315
1316         /* Flush pending command nodes */
1317         del_timer_sync(&priv->command_timer);
1318         spin_lock_irqsave(&priv->driver_lock, flags);
1319         list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1320                 cmdnode->result = -ENOENT;
1321                 cmdnode->cmdwaitqwoken = 1;
1322                 wake_up_interruptible(&cmdnode->cmdwait_q);
1323         }
1324         spin_unlock_irqrestore(&priv->driver_lock, flags);
1325
1326         unregister_netdev(dev);
1327
1328 out:
1329         lbs_deb_leave(LBS_DEB_MAIN);
1330 }
1331 EXPORT_SYMBOL_GPL(lbs_stop_card);
1332
1333
1334 /**
1335  * @brief This function adds mshX interface
1336  *
1337  *  @param priv    A pointer to the struct lbs_private structure
1338  *  @return        0 if successful, -X otherwise
1339  */
1340 static int lbs_add_mesh(struct lbs_private *priv)
1341 {
1342         struct net_device *mesh_dev = NULL;
1343         int ret = 0;
1344
1345         lbs_deb_enter(LBS_DEB_MESH);
1346
1347         /* Allocate a virtual mesh device */
1348         if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1349                 lbs_deb_mesh("init mshX device failed\n");
1350                 ret = -ENOMEM;
1351                 goto done;
1352         }
1353         mesh_dev->priv = priv;
1354         priv->mesh_dev = mesh_dev;
1355
1356         mesh_dev->open = lbs_dev_open;
1357         mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1358         mesh_dev->stop = lbs_mesh_stop;
1359         mesh_dev->get_stats = lbs_get_stats;
1360         mesh_dev->set_mac_address = lbs_set_mac_address;
1361         mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1362         memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1363                         sizeof(priv->dev->dev_addr));
1364
1365         SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1366
1367 #ifdef  WIRELESS_EXT
1368         mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1369 #endif
1370         mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1371         mesh_dev->set_multicast_list = lbs_set_multicast_list;
1372         /* Register virtual mesh interface */
1373         ret = register_netdev(mesh_dev);
1374         if (ret) {
1375                 lbs_pr_err("cannot register mshX virtual interface\n");
1376                 goto err_free;
1377         }
1378
1379         ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1380         if (ret)
1381                 goto err_unregister;
1382
1383         lbs_persist_config_init(mesh_dev);
1384
1385         /* Everything successful */
1386         ret = 0;
1387         goto done;
1388
1389 err_unregister:
1390         unregister_netdev(mesh_dev);
1391
1392 err_free:
1393         free_netdev(mesh_dev);
1394
1395 done:
1396         lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1397         return ret;
1398 }
1399
1400 static void lbs_remove_mesh(struct lbs_private *priv)
1401 {
1402         struct net_device *mesh_dev;
1403
1404
1405         mesh_dev = priv->mesh_dev;
1406         if (!mesh_dev)
1407                 return;
1408
1409         lbs_deb_enter(LBS_DEB_MESH);
1410         netif_stop_queue(mesh_dev);
1411         netif_carrier_off(mesh_dev);
1412         sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1413         lbs_persist_config_remove(mesh_dev);
1414         unregister_netdev(mesh_dev);
1415         priv->mesh_dev = NULL;
1416         free_netdev(mesh_dev);
1417         lbs_deb_leave(LBS_DEB_MESH);
1418 }
1419
1420 /**
1421  *  @brief This function finds the CFP in
1422  *  region_cfp_table based on region and band parameter.
1423  *
1424  *  @param region  The region code
1425  *  @param band    The band
1426  *  @param cfp_no  A pointer to CFP number
1427  *  @return        A pointer to CFP
1428  */
1429 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1430 {
1431         int i, end;
1432
1433         lbs_deb_enter(LBS_DEB_MAIN);
1434
1435         end = ARRAY_SIZE(region_cfp_table);
1436
1437         for (i = 0; i < end ; i++) {
1438                 lbs_deb_main("region_cfp_table[i].region=%d\n",
1439                         region_cfp_table[i].region);
1440                 if (region_cfp_table[i].region == region) {
1441                         *cfp_no = region_cfp_table[i].cfp_no_BG;
1442                         lbs_deb_leave(LBS_DEB_MAIN);
1443                         return region_cfp_table[i].cfp_BG;
1444                 }
1445         }
1446
1447         lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1448         return NULL;
1449 }
1450
1451 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1452 {
1453         int ret = 0;
1454         int i = 0;
1455
1456         struct chan_freq_power *cfp;
1457         int cfp_no;
1458
1459         lbs_deb_enter(LBS_DEB_MAIN);
1460
1461         memset(priv->region_channel, 0, sizeof(priv->region_channel));
1462
1463         cfp = lbs_get_region_cfp_table(region, &cfp_no);
1464         if (cfp != NULL) {
1465                 priv->region_channel[i].nrcfp = cfp_no;
1466                 priv->region_channel[i].CFP = cfp;
1467         } else {
1468                 lbs_deb_main("wrong region code %#x in band B/G\n",
1469                        region);
1470                 ret = -1;
1471                 goto out;
1472         }
1473         priv->region_channel[i].valid = 1;
1474         priv->region_channel[i].region = region;
1475         priv->region_channel[i].band = band;
1476         i++;
1477 out:
1478         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1479         return ret;
1480 }
1481
1482 void lbs_queue_event(struct lbs_private *priv, u32 event)
1483 {
1484         unsigned long flags;
1485
1486         lbs_deb_enter(LBS_DEB_THREAD);
1487         spin_lock_irqsave(&priv->driver_lock, flags);
1488
1489         if (priv->psstate == PS_STATE_SLEEP)
1490                 priv->psstate = PS_STATE_AWAKE;
1491
1492         __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1493
1494         wake_up_interruptible(&priv->waitq);
1495
1496         spin_unlock_irqrestore(&priv->driver_lock, flags);
1497         lbs_deb_leave(LBS_DEB_THREAD);
1498 }
1499 EXPORT_SYMBOL_GPL(lbs_queue_event);
1500
1501 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1502 {
1503         lbs_deb_enter(LBS_DEB_THREAD);
1504
1505         if (priv->psstate == PS_STATE_SLEEP)
1506                 priv->psstate = PS_STATE_AWAKE;
1507
1508         /* Swap buffers by flipping the response index */
1509         BUG_ON(resp_idx > 1);
1510         priv->resp_idx = resp_idx;
1511
1512         wake_up_interruptible(&priv->waitq);
1513
1514         lbs_deb_leave(LBS_DEB_THREAD);
1515 }
1516 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1517
1518 static int __init lbs_init_module(void)
1519 {
1520         lbs_deb_enter(LBS_DEB_MAIN);
1521         memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1522         confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1523         confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1524         confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1525         lbs_debugfs_init();
1526         lbs_deb_leave(LBS_DEB_MAIN);
1527         return 0;
1528 }
1529
1530 static void __exit lbs_exit_module(void)
1531 {
1532         lbs_deb_enter(LBS_DEB_MAIN);
1533         lbs_debugfs_remove();
1534         lbs_deb_leave(LBS_DEB_MAIN);
1535 }
1536
1537 /*
1538  * rtap interface support fuctions
1539  */
1540
1541 static int lbs_rtap_open(struct net_device *dev)
1542 {
1543         /* Yes, _stop_ the queue. Because we don't support injection */
1544         lbs_deb_enter(LBS_DEB_MAIN);
1545         netif_carrier_off(dev);
1546         netif_stop_queue(dev);
1547         lbs_deb_leave(LBS_DEB_LEAVE);
1548         return 0;
1549 }
1550
1551 static int lbs_rtap_stop(struct net_device *dev)
1552 {
1553         lbs_deb_enter(LBS_DEB_MAIN);
1554         lbs_deb_leave(LBS_DEB_MAIN);
1555         return 0;
1556 }
1557
1558 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1559 {
1560         netif_stop_queue(dev);
1561         return NETDEV_TX_BUSY;
1562 }
1563
1564 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1565 {
1566         struct lbs_private *priv = dev->priv;
1567         lbs_deb_enter(LBS_DEB_NET);
1568         return &priv->stats;
1569 }
1570
1571
1572 static void lbs_remove_rtap(struct lbs_private *priv)
1573 {
1574         lbs_deb_enter(LBS_DEB_MAIN);
1575         if (priv->rtap_net_dev == NULL)
1576                 goto out;
1577         unregister_netdev(priv->rtap_net_dev);
1578         free_netdev(priv->rtap_net_dev);
1579         priv->rtap_net_dev = NULL;
1580 out:
1581         lbs_deb_leave(LBS_DEB_MAIN);
1582 }
1583
1584 static int lbs_add_rtap(struct lbs_private *priv)
1585 {
1586         int ret = 0;
1587         struct net_device *rtap_dev;
1588
1589         lbs_deb_enter(LBS_DEB_MAIN);
1590         if (priv->rtap_net_dev) {
1591                 ret = -EPERM;
1592                 goto out;
1593         }
1594
1595         rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1596         if (rtap_dev == NULL) {
1597                 ret = -ENOMEM;
1598                 goto out;
1599         }
1600
1601         memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1602         rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1603         rtap_dev->open = lbs_rtap_open;
1604         rtap_dev->stop = lbs_rtap_stop;
1605         rtap_dev->get_stats = lbs_rtap_get_stats;
1606         rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1607         rtap_dev->priv = priv;
1608         SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1609
1610         ret = register_netdev(rtap_dev);
1611         if (ret) {
1612                 free_netdev(rtap_dev);
1613                 goto out;
1614         }
1615         priv->rtap_net_dev = rtap_dev;
1616
1617 out:
1618         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1619         return ret;
1620 }
1621
1622 #ifndef CONFIG_IEEE80211
1623 const char *escape_essid(const char *essid, u8 essid_len)
1624 {
1625         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1626         const char *s = essid;
1627         char *d = escaped;
1628
1629         if (ieee80211_is_empty_essid(essid, essid_len)) {
1630                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1631                 return escaped;
1632         }
1633
1634         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1635         while (essid_len--) {
1636                 if (*s == '\0') {
1637                         *d++ = '\\';
1638                         *d++ = '0';
1639                         s++;
1640                 } else {
1641                         *d++ = *s++;
1642                 }
1643         }
1644         *d = '\0';
1645         return escaped;
1646 }
1647 #endif
1648
1649 module_init(lbs_init_module);
1650 module_exit(lbs_exit_module);
1651
1652 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1653 MODULE_AUTHOR("Marvell International Ltd.");
1654 MODULE_LICENSE("GPL");