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Merge commit 'v2.6.27-rc7' into x86/microcode
[GitHub/mt8127/android_kernel_alcatel_ttab.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 } else {
301 if (!priv->monitormode)
302 return strlen(buf);
303 priv->monitormode = 0;
304 lbs_remove_rtap(priv);
305
306 if (priv->currenttxskb) {
307 dev_kfree_skb_any(priv->currenttxskb);
308 priv->currenttxskb = NULL;
309 }
310
311 /* Wake queues, command thread, etc. */
312 lbs_host_to_card_done(priv);
313 }
314
315 lbs_prepare_and_send_command(priv,
316 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
317 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
318 return strlen(buf);
319 }
320
321 /**
322 * lbs_rtap attribute to be exported per ethX interface
323 * through sysfs (/sys/class/net/ethX/lbs_rtap)
324 */
325 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
326
327 /**
328 * Get function for sysfs attribute mesh
329 */
330 static ssize_t lbs_mesh_get(struct device *dev,
331 struct device_attribute *attr, char * buf)
332 {
333 struct lbs_private *priv = to_net_dev(dev)->priv;
334 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
335 }
336
337 /**
338 * Set function for sysfs attribute mesh
339 */
340 static ssize_t lbs_mesh_set(struct device *dev,
341 struct device_attribute *attr, const char * buf, size_t count)
342 {
343 struct lbs_private *priv = to_net_dev(dev)->priv;
344 int enable;
345 int ret, action = CMD_ACT_MESH_CONFIG_STOP;
346
347 sscanf(buf, "%x", &enable);
348 enable = !!enable;
349 if (enable == !!priv->mesh_dev)
350 return count;
351 if (enable)
352 action = CMD_ACT_MESH_CONFIG_START;
353 ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
354 if (ret)
355 return ret;
356
357 if (enable)
358 lbs_add_mesh(priv);
359 else
360 lbs_remove_mesh(priv);
361
362 return count;
363 }
364
365 /**
366 * lbs_mesh attribute to be exported per ethX interface
367 * through sysfs (/sys/class/net/ethX/lbs_mesh)
368 */
369 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
370
371 /**
372 * anycast_mask attribute to be exported per mshX interface
373 * through sysfs (/sys/class/net/mshX/anycast_mask)
374 */
375 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
376
377 static struct attribute *lbs_mesh_sysfs_entries[] = {
378 &dev_attr_anycast_mask.attr,
379 NULL,
380 };
381
382 static struct attribute_group lbs_mesh_attr_group = {
383 .attrs = lbs_mesh_sysfs_entries,
384 };
385
386 /**
387 * @brief This function opens the ethX or mshX interface
388 *
389 * @param dev A pointer to net_device structure
390 * @return 0 or -EBUSY if monitor mode active
391 */
392 static int lbs_dev_open(struct net_device *dev)
393 {
394 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
395 int ret = 0;
396
397 lbs_deb_enter(LBS_DEB_NET);
398
399 spin_lock_irq(&priv->driver_lock);
400
401 if (priv->monitormode) {
402 ret = -EBUSY;
403 goto out;
404 }
405
406 if (dev == priv->mesh_dev) {
407 priv->mesh_open = 1;
408 priv->mesh_connect_status = LBS_CONNECTED;
409 netif_carrier_on(dev);
410 } else {
411 priv->infra_open = 1;
412
413 if (priv->connect_status == LBS_CONNECTED)
414 netif_carrier_on(dev);
415 else
416 netif_carrier_off(dev);
417 }
418
419 if (!priv->tx_pending_len)
420 netif_wake_queue(dev);
421 out:
422
423 spin_unlock_irq(&priv->driver_lock);
424 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
425 return ret;
426 }
427
428 /**
429 * @brief This function closes the mshX interface
430 *
431 * @param dev A pointer to net_device structure
432 * @return 0
433 */
434 static int lbs_mesh_stop(struct net_device *dev)
435 {
436 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
437
438 lbs_deb_enter(LBS_DEB_MESH);
439 spin_lock_irq(&priv->driver_lock);
440
441 priv->mesh_open = 0;
442 priv->mesh_connect_status = LBS_DISCONNECTED;
443
444 netif_stop_queue(dev);
445 netif_carrier_off(dev);
446
447 spin_unlock_irq(&priv->driver_lock);
448
449 schedule_work(&priv->mcast_work);
450
451 lbs_deb_leave(LBS_DEB_MESH);
452 return 0;
453 }
454
455 /**
456 * @brief This function closes the ethX interface
457 *
458 * @param dev A pointer to net_device structure
459 * @return 0
460 */
461 static int lbs_eth_stop(struct net_device *dev)
462 {
463 struct lbs_private *priv = (struct lbs_private *) dev->priv;
464
465 lbs_deb_enter(LBS_DEB_NET);
466
467 spin_lock_irq(&priv->driver_lock);
468 priv->infra_open = 0;
469 netif_stop_queue(dev);
470 spin_unlock_irq(&priv->driver_lock);
471
472 schedule_work(&priv->mcast_work);
473
474 lbs_deb_leave(LBS_DEB_NET);
475 return 0;
476 }
477
478 static void lbs_tx_timeout(struct net_device *dev)
479 {
480 struct lbs_private *priv = (struct lbs_private *) dev->priv;
481
482 lbs_deb_enter(LBS_DEB_TX);
483
484 lbs_pr_err("tx watch dog timeout\n");
485
486 dev->trans_start = jiffies;
487
488 if (priv->currenttxskb)
489 lbs_send_tx_feedback(priv, 0);
490
491 /* XX: Shouldn't we also call into the hw-specific driver
492 to kick it somehow? */
493 lbs_host_to_card_done(priv);
494
495 /* More often than not, this actually happens because the
496 firmware has crapped itself -- rather than just a very
497 busy medium. So send a harmless command, and if/when
498 _that_ times out, we'll kick it in the head. */
499 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
500 0, 0, NULL);
501
502 lbs_deb_leave(LBS_DEB_TX);
503 }
504
505 void lbs_host_to_card_done(struct lbs_private *priv)
506 {
507 unsigned long flags;
508
509 lbs_deb_enter(LBS_DEB_THREAD);
510
511 spin_lock_irqsave(&priv->driver_lock, flags);
512
513 priv->dnld_sent = DNLD_RES_RECEIVED;
514
515 /* Wake main thread if commands are pending */
516 if (!priv->cur_cmd || priv->tx_pending_len > 0)
517 wake_up_interruptible(&priv->waitq);
518
519 spin_unlock_irqrestore(&priv->driver_lock, flags);
520 lbs_deb_leave(LBS_DEB_THREAD);
521 }
522 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
523
524 /**
525 * @brief This function returns the network statistics
526 *
527 * @param dev A pointer to struct lbs_private structure
528 * @return A pointer to net_device_stats structure
529 */
530 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
531 {
532 struct lbs_private *priv = (struct lbs_private *) dev->priv;
533
534 lbs_deb_enter(LBS_DEB_NET);
535 return &priv->stats;
536 }
537
538 static int lbs_set_mac_address(struct net_device *dev, void *addr)
539 {
540 int ret = 0;
541 struct lbs_private *priv = (struct lbs_private *) dev->priv;
542 struct sockaddr *phwaddr = addr;
543 struct cmd_ds_802_11_mac_address cmd;
544
545 lbs_deb_enter(LBS_DEB_NET);
546
547 /* In case it was called from the mesh device */
548 dev = priv->dev;
549
550 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
551 cmd.action = cpu_to_le16(CMD_ACT_SET);
552 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
553
554 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
555 if (ret) {
556 lbs_deb_net("set MAC address failed\n");
557 goto done;
558 }
559
560 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
561 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
562 if (priv->mesh_dev)
563 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
564
565 done:
566 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
567 return ret;
568 }
569
570
571 static inline int mac_in_list(unsigned char *list, int list_len,
572 unsigned char *mac)
573 {
574 while (list_len) {
575 if (!memcmp(list, mac, ETH_ALEN))
576 return 1;
577 list += ETH_ALEN;
578 list_len--;
579 }
580 return 0;
581 }
582
583
584 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
585 struct net_device *dev, int nr_addrs)
586 {
587 int i = nr_addrs;
588 struct dev_mc_list *mc_list;
589 DECLARE_MAC_BUF(mac);
590
591 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
592 return nr_addrs;
593
594 netif_addr_lock_bh(dev);
595 for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
596 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
597 lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
598 print_mac(mac, mc_list->dmi_addr));
599 continue;
600 }
601
602 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
603 break;
604 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
605 lbs_deb_net("mcast address %s:%s added to filter\n", dev->name,
606 print_mac(mac, mc_list->dmi_addr));
607 i++;
608 }
609 netif_addr_unlock_bh(dev);
610 if (mc_list)
611 return -EOVERFLOW;
612
613 return i;
614 }
615
616 static void lbs_set_mcast_worker(struct work_struct *work)
617 {
618 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
619 struct cmd_ds_mac_multicast_adr mcast_cmd;
620 int dev_flags;
621 int nr_addrs;
622 int old_mac_control = priv->mac_control;
623
624 lbs_deb_enter(LBS_DEB_NET);
625
626 dev_flags = priv->dev->flags;
627 if (priv->mesh_dev)
628 dev_flags |= priv->mesh_dev->flags;
629
630 if (dev_flags & IFF_PROMISC) {
631 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
632 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
633 CMD_ACT_MAC_MULTICAST_ENABLE);
634 goto out_set_mac_control;
635 } else if (dev_flags & IFF_ALLMULTI) {
636 do_allmulti:
637 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
638 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
639 CMD_ACT_MAC_MULTICAST_ENABLE);
640 goto out_set_mac_control;
641 }
642
643 /* Once for priv->dev, again for priv->mesh_dev if it exists */
644 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
645 if (nr_addrs >= 0 && priv->mesh_dev)
646 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
647 if (nr_addrs < 0)
648 goto do_allmulti;
649
650 if (nr_addrs) {
651 int size = offsetof(struct cmd_ds_mac_multicast_adr,
652 maclist[6*nr_addrs]);
653
654 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
655 mcast_cmd.hdr.size = cpu_to_le16(size);
656 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
657
658 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
659
660 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
661 } else
662 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
663
664 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
665 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
666 out_set_mac_control:
667 if (priv->mac_control != old_mac_control)
668 lbs_set_mac_control(priv);
669
670 lbs_deb_leave(LBS_DEB_NET);
671 }
672
673 static void lbs_set_multicast_list(struct net_device *dev)
674 {
675 struct lbs_private *priv = dev->priv;
676
677 schedule_work(&priv->mcast_work);
678 }
679
680 /**
681 * @brief This function handles the major jobs in the LBS driver.
682 * It handles all events generated by firmware, RX data received
683 * from firmware and TX data sent from kernel.
684 *
685 * @param data A pointer to lbs_thread structure
686 * @return 0
687 */
688 static int lbs_thread(void *data)
689 {
690 struct net_device *dev = data;
691 struct lbs_private *priv = dev->priv;
692 wait_queue_t wait;
693
694 lbs_deb_enter(LBS_DEB_THREAD);
695
696 init_waitqueue_entry(&wait, current);
697
698 for (;;) {
699 int shouldsleep;
700 u8 resp_idx;
701
702 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
703 priv->currenttxskb, priv->dnld_sent);
704
705 add_wait_queue(&priv->waitq, &wait);
706 set_current_state(TASK_INTERRUPTIBLE);
707 spin_lock_irq(&priv->driver_lock);
708
709 if (kthread_should_stop())
710 shouldsleep = 0; /* Bye */
711 else if (priv->surpriseremoved)
712 shouldsleep = 1; /* We need to wait until we're _told_ to die */
713 else if (priv->psstate == PS_STATE_SLEEP)
714 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
715 else if (priv->cmd_timed_out)
716 shouldsleep = 0; /* Command timed out. Recover */
717 else if (!priv->fw_ready)
718 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
719 else if (priv->dnld_sent)
720 shouldsleep = 1; /* Something is en route to the device already */
721 else if (priv->tx_pending_len > 0)
722 shouldsleep = 0; /* We've a packet to send */
723 else if (priv->resp_len[priv->resp_idx])
724 shouldsleep = 0; /* We have a command response */
725 else if (priv->cur_cmd)
726 shouldsleep = 1; /* Can't send a command; one already running */
727 else if (!list_empty(&priv->cmdpendingq))
728 shouldsleep = 0; /* We have a command to send */
729 else if (__kfifo_len(priv->event_fifo))
730 shouldsleep = 0; /* We have an event to process */
731 else
732 shouldsleep = 1; /* No command */
733
734 if (shouldsleep) {
735 lbs_deb_thread("sleeping, connect_status %d, "
736 "psmode %d, psstate %d\n",
737 priv->connect_status,
738 priv->psmode, priv->psstate);
739 spin_unlock_irq(&priv->driver_lock);
740 schedule();
741 } else
742 spin_unlock_irq(&priv->driver_lock);
743
744 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
745 priv->currenttxskb, priv->dnld_sent);
746
747 set_current_state(TASK_RUNNING);
748 remove_wait_queue(&priv->waitq, &wait);
749
750 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
751 priv->currenttxskb, priv->dnld_sent);
752
753 if (kthread_should_stop()) {
754 lbs_deb_thread("break from main thread\n");
755 break;
756 }
757
758 if (priv->surpriseremoved) {
759 lbs_deb_thread("adapter removed; waiting to die...\n");
760 continue;
761 }
762
763 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
764 priv->currenttxskb, priv->dnld_sent);
765
766 /* Process any pending command response */
767 spin_lock_irq(&priv->driver_lock);
768 resp_idx = priv->resp_idx;
769 if (priv->resp_len[resp_idx]) {
770 spin_unlock_irq(&priv->driver_lock);
771 lbs_process_command_response(priv,
772 priv->resp_buf[resp_idx],
773 priv->resp_len[resp_idx]);
774 spin_lock_irq(&priv->driver_lock);
775 priv->resp_len[resp_idx] = 0;
776 }
777 spin_unlock_irq(&priv->driver_lock);
778
779 /* command timeout stuff */
780 if (priv->cmd_timed_out && priv->cur_cmd) {
781 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
782
783 if (++priv->nr_retries > 3) {
784 lbs_pr_info("Excessive timeouts submitting "
785 "command 0x%04x\n",
786 le16_to_cpu(cmdnode->cmdbuf->command));
787 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
788 priv->nr_retries = 0;
789 if (priv->reset_card)
790 priv->reset_card(priv);
791 } else {
792 priv->cur_cmd = NULL;
793 priv->dnld_sent = DNLD_RES_RECEIVED;
794 lbs_pr_info("requeueing command 0x%04x due "
795 "to timeout (#%d)\n",
796 le16_to_cpu(cmdnode->cmdbuf->command),
797 priv->nr_retries);
798
799 /* Stick it back at the _top_ of the pending queue
800 for immediate resubmission */
801 list_add(&cmdnode->list, &priv->cmdpendingq);
802 }
803 }
804 priv->cmd_timed_out = 0;
805
806 /* Process hardware events, e.g. card removed, link lost */
807 spin_lock_irq(&priv->driver_lock);
808 while (__kfifo_len(priv->event_fifo)) {
809 u32 event;
810
811 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
812 sizeof(event));
813 spin_unlock_irq(&priv->driver_lock);
814 lbs_process_event(priv, event);
815 spin_lock_irq(&priv->driver_lock);
816 }
817 spin_unlock_irq(&priv->driver_lock);
818
819 if (!priv->fw_ready)
820 continue;
821
822 /* Check if we need to confirm Sleep Request received previously */
823 if (priv->psstate == PS_STATE_PRE_SLEEP &&
824 !priv->dnld_sent && !priv->cur_cmd) {
825 if (priv->connect_status == LBS_CONNECTED) {
826 lbs_deb_thread("pre-sleep, currenttxskb %p, "
827 "dnld_sent %d, cur_cmd %p\n",
828 priv->currenttxskb, priv->dnld_sent,
829 priv->cur_cmd);
830
831 lbs_ps_confirm_sleep(priv);
832 } else {
833 /* workaround for firmware sending
834 * deauth/linkloss event immediately
835 * after sleep request; remove this
836 * after firmware fixes it
837 */
838 priv->psstate = PS_STATE_AWAKE;
839 lbs_pr_alert("ignore PS_SleepConfirm in "
840 "non-connected state\n");
841 }
842 }
843
844 /* The PS state is changed during processing of Sleep Request
845 * event above
846 */
847 if ((priv->psstate == PS_STATE_SLEEP) ||
848 (priv->psstate == PS_STATE_PRE_SLEEP))
849 continue;
850
851 /* Execute the next command */
852 if (!priv->dnld_sent && !priv->cur_cmd)
853 lbs_execute_next_command(priv);
854
855 /* Wake-up command waiters which can't sleep in
856 * lbs_prepare_and_send_command
857 */
858 if (!list_empty(&priv->cmdpendingq))
859 wake_up_all(&priv->cmd_pending);
860
861 spin_lock_irq(&priv->driver_lock);
862 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
863 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
864 priv->tx_pending_buf,
865 priv->tx_pending_len);
866 if (ret) {
867 lbs_deb_tx("host_to_card failed %d\n", ret);
868 priv->dnld_sent = DNLD_RES_RECEIVED;
869 }
870 priv->tx_pending_len = 0;
871 if (!priv->currenttxskb) {
872 /* We can wake the queues immediately if we aren't
873 waiting for TX feedback */
874 if (priv->connect_status == LBS_CONNECTED)
875 netif_wake_queue(priv->dev);
876 if (priv->mesh_dev &&
877 priv->mesh_connect_status == LBS_CONNECTED)
878 netif_wake_queue(priv->mesh_dev);
879 }
880 }
881 spin_unlock_irq(&priv->driver_lock);
882 }
883
884 del_timer(&priv->command_timer);
885 wake_up_all(&priv->cmd_pending);
886
887 lbs_deb_leave(LBS_DEB_THREAD);
888 return 0;
889 }
890
891 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
892 struct cmd_header *cmd)
893 {
894 lbs_deb_enter(LBS_DEB_FW);
895
896 netif_device_detach(priv->dev);
897 if (priv->mesh_dev)
898 netif_device_detach(priv->mesh_dev);
899
900 priv->fw_ready = 0;
901 lbs_deb_leave(LBS_DEB_FW);
902 return 0;
903 }
904
905 int lbs_suspend(struct lbs_private *priv)
906 {
907 struct cmd_header cmd;
908 int ret;
909
910 lbs_deb_enter(LBS_DEB_FW);
911
912 if (priv->wol_criteria == 0xffffffff) {
913 lbs_pr_info("Suspend attempt without configuring wake params!\n");
914 return -EINVAL;
915 }
916
917 memset(&cmd, 0, sizeof(cmd));
918
919 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
920 sizeof(cmd), lbs_suspend_callback, 0);
921 if (ret)
922 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
923
924 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
925 return ret;
926 }
927 EXPORT_SYMBOL_GPL(lbs_suspend);
928
929 void lbs_resume(struct lbs_private *priv)
930 {
931 lbs_deb_enter(LBS_DEB_FW);
932
933 priv->fw_ready = 1;
934
935 /* Firmware doesn't seem to give us RX packets any more
936 until we send it some command. Might as well update */
937 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
938 0, 0, NULL);
939
940 netif_device_attach(priv->dev);
941 if (priv->mesh_dev)
942 netif_device_attach(priv->mesh_dev);
943
944 lbs_deb_leave(LBS_DEB_FW);
945 }
946 EXPORT_SYMBOL_GPL(lbs_resume);
947
948 /**
949 * @brief This function downloads firmware image, gets
950 * HW spec from firmware and set basic parameters to
951 * firmware.
952 *
953 * @param priv A pointer to struct lbs_private structure
954 * @return 0 or -1
955 */
956 static int lbs_setup_firmware(struct lbs_private *priv)
957 {
958 int ret = -1;
959
960 lbs_deb_enter(LBS_DEB_FW);
961
962 /*
963 * Read MAC address from HW
964 */
965 memset(priv->current_addr, 0xff, ETH_ALEN);
966 ret = lbs_update_hw_spec(priv);
967 if (ret)
968 goto done;
969
970 lbs_set_mac_control(priv);
971 done:
972 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
973 return ret;
974 }
975
976 /**
977 * This function handles the timeout of command sending.
978 * It will re-send the same command again.
979 */
980 static void command_timer_fn(unsigned long data)
981 {
982 struct lbs_private *priv = (struct lbs_private *)data;
983 unsigned long flags;
984
985 lbs_deb_enter(LBS_DEB_CMD);
986 spin_lock_irqsave(&priv->driver_lock, flags);
987
988 if (!priv->cur_cmd)
989 goto out;
990
991 lbs_pr_info("command 0x%04x timed out\n",
992 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
993
994 priv->cmd_timed_out = 1;
995 wake_up_interruptible(&priv->waitq);
996 out:
997 spin_unlock_irqrestore(&priv->driver_lock, flags);
998 lbs_deb_leave(LBS_DEB_CMD);
999 }
1000
1001 static void lbs_sync_channel_worker(struct work_struct *work)
1002 {
1003 struct lbs_private *priv = container_of(work, struct lbs_private,
1004 sync_channel);
1005
1006 lbs_deb_enter(LBS_DEB_MAIN);
1007 if (lbs_update_channel(priv))
1008 lbs_pr_info("Channel synchronization failed.");
1009 lbs_deb_leave(LBS_DEB_MAIN);
1010 }
1011
1012
1013 static int lbs_init_adapter(struct lbs_private *priv)
1014 {
1015 size_t bufsize;
1016 int i, ret = 0;
1017
1018 lbs_deb_enter(LBS_DEB_MAIN);
1019
1020 /* Allocate buffer to store the BSSID list */
1021 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1022 priv->networks = kzalloc(bufsize, GFP_KERNEL);
1023 if (!priv->networks) {
1024 lbs_pr_err("Out of memory allocating beacons\n");
1025 ret = -1;
1026 goto out;
1027 }
1028
1029 /* Initialize scan result lists */
1030 INIT_LIST_HEAD(&priv->network_free_list);
1031 INIT_LIST_HEAD(&priv->network_list);
1032 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1033 list_add_tail(&priv->networks[i].list,
1034 &priv->network_free_list);
1035 }
1036
1037 memset(priv->current_addr, 0xff, ETH_ALEN);
1038
1039 priv->connect_status = LBS_DISCONNECTED;
1040 priv->mesh_connect_status = LBS_DISCONNECTED;
1041 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1042 priv->mode = IW_MODE_INFRA;
1043 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1044 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1045 priv->radioon = RADIO_ON;
1046 priv->enablehwauto = 1;
1047 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1048 priv->psmode = LBS802_11POWERMODECAM;
1049 priv->psstate = PS_STATE_FULL_POWER;
1050
1051 mutex_init(&priv->lock);
1052
1053 setup_timer(&priv->command_timer, command_timer_fn,
1054 (unsigned long)priv);
1055
1056 INIT_LIST_HEAD(&priv->cmdfreeq);
1057 INIT_LIST_HEAD(&priv->cmdpendingq);
1058
1059 spin_lock_init(&priv->driver_lock);
1060 init_waitqueue_head(&priv->cmd_pending);
1061
1062 /* Allocate the command buffers */
1063 if (lbs_allocate_cmd_buffer(priv)) {
1064 lbs_pr_err("Out of memory allocating command buffers\n");
1065 ret = -ENOMEM;
1066 goto out;
1067 }
1068 priv->resp_idx = 0;
1069 priv->resp_len[0] = priv->resp_len[1] = 0;
1070
1071 /* Create the event FIFO */
1072 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1073 if (IS_ERR(priv->event_fifo)) {
1074 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1075 ret = -ENOMEM;
1076 goto out;
1077 }
1078
1079 out:
1080 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1081
1082 return ret;
1083 }
1084
1085 static void lbs_free_adapter(struct lbs_private *priv)
1086 {
1087 lbs_deb_enter(LBS_DEB_MAIN);
1088
1089 lbs_free_cmd_buffer(priv);
1090 if (priv->event_fifo)
1091 kfifo_free(priv->event_fifo);
1092 del_timer(&priv->command_timer);
1093 kfree(priv->networks);
1094 priv->networks = NULL;
1095
1096 lbs_deb_leave(LBS_DEB_MAIN);
1097 }
1098
1099 /**
1100 * @brief This function adds the card. it will probe the
1101 * card, allocate the lbs_priv and initialize the device.
1102 *
1103 * @param card A pointer to card
1104 * @return A pointer to struct lbs_private structure
1105 */
1106 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1107 {
1108 struct net_device *dev = NULL;
1109 struct lbs_private *priv = NULL;
1110
1111 lbs_deb_enter(LBS_DEB_MAIN);
1112
1113 /* Allocate an Ethernet device and register it */
1114 dev = alloc_etherdev(sizeof(struct lbs_private));
1115 if (!dev) {
1116 lbs_pr_err("init ethX device failed\n");
1117 goto done;
1118 }
1119 priv = dev->priv;
1120
1121 if (lbs_init_adapter(priv)) {
1122 lbs_pr_err("failed to initialize adapter structure.\n");
1123 goto err_init_adapter;
1124 }
1125
1126 priv->dev = dev;
1127 priv->card = card;
1128 priv->mesh_open = 0;
1129 priv->infra_open = 0;
1130
1131 /* Setup the OS Interface to our functions */
1132 dev->open = lbs_dev_open;
1133 dev->hard_start_xmit = lbs_hard_start_xmit;
1134 dev->stop = lbs_eth_stop;
1135 dev->set_mac_address = lbs_set_mac_address;
1136 dev->tx_timeout = lbs_tx_timeout;
1137 dev->get_stats = lbs_get_stats;
1138 dev->watchdog_timeo = 5 * HZ;
1139 dev->ethtool_ops = &lbs_ethtool_ops;
1140 #ifdef WIRELESS_EXT
1141 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1142 #endif
1143 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1144 dev->set_multicast_list = lbs_set_multicast_list;
1145
1146 SET_NETDEV_DEV(dev, dmdev);
1147
1148 priv->rtap_net_dev = NULL;
1149
1150 lbs_deb_thread("Starting main thread...\n");
1151 init_waitqueue_head(&priv->waitq);
1152 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1153 if (IS_ERR(priv->main_thread)) {
1154 lbs_deb_thread("Error creating main thread.\n");
1155 goto err_init_adapter;
1156 }
1157
1158 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1159 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1160 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1161 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1162 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1163
1164 sprintf(priv->mesh_ssid, "mesh");
1165 priv->mesh_ssid_len = 4;
1166
1167 priv->wol_criteria = 0xffffffff;
1168 priv->wol_gpio = 0xff;
1169
1170 goto done;
1171
1172 err_init_adapter:
1173 lbs_free_adapter(priv);
1174 free_netdev(dev);
1175 priv = NULL;
1176
1177 done:
1178 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1179 return priv;
1180 }
1181 EXPORT_SYMBOL_GPL(lbs_add_card);
1182
1183
1184 void lbs_remove_card(struct lbs_private *priv)
1185 {
1186 struct net_device *dev = priv->dev;
1187 union iwreq_data wrqu;
1188
1189 lbs_deb_enter(LBS_DEB_MAIN);
1190
1191 lbs_remove_mesh(priv);
1192 lbs_remove_rtap(priv);
1193
1194 dev = priv->dev;
1195
1196 cancel_delayed_work_sync(&priv->scan_work);
1197 cancel_delayed_work_sync(&priv->assoc_work);
1198 cancel_work_sync(&priv->mcast_work);
1199 destroy_workqueue(priv->work_thread);
1200
1201 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1202 priv->psmode = LBS802_11POWERMODECAM;
1203 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1204 }
1205
1206 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1207 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1208 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1209
1210 /* Stop the thread servicing the interrupts */
1211 priv->surpriseremoved = 1;
1212 kthread_stop(priv->main_thread);
1213
1214 lbs_free_adapter(priv);
1215
1216 priv->dev = NULL;
1217 free_netdev(dev);
1218
1219 lbs_deb_leave(LBS_DEB_MAIN);
1220 }
1221 EXPORT_SYMBOL_GPL(lbs_remove_card);
1222
1223
1224 int lbs_start_card(struct lbs_private *priv)
1225 {
1226 struct net_device *dev = priv->dev;
1227 int ret = -1;
1228
1229 lbs_deb_enter(LBS_DEB_MAIN);
1230
1231 /* poke the firmware */
1232 ret = lbs_setup_firmware(priv);
1233 if (ret)
1234 goto done;
1235
1236 /* init 802.11d */
1237 lbs_init_11d(priv);
1238
1239 if (register_netdev(dev)) {
1240 lbs_pr_err("cannot register ethX device\n");
1241 goto done;
1242 }
1243
1244 lbs_update_channel(priv);
1245
1246 /* 5.0.16p0 is known to NOT support any mesh */
1247 if (priv->fwrelease > 0x05001000) {
1248 /* Enable mesh, if supported, and work out which TLV it uses.
1249 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1250 0x100 + 37 is the official value used in 5.110.21.pXX
1251 but we check them in that order because 20.pXX doesn't
1252 give an error -- it just silently fails. */
1253
1254 /* 5.110.20.pXX firmware will fail the command if the channel
1255 doesn't match the existing channel. But only if the TLV
1256 is correct. If the channel is wrong, _BOTH_ versions will
1257 give an error to 0x100+291, and allow 0x100+37 to succeed.
1258 It's just that 5.110.20.pXX will not have done anything
1259 useful */
1260
1261 priv->mesh_tlv = 0x100 + 291;
1262 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1263 priv->curbssparams.channel)) {
1264 priv->mesh_tlv = 0x100 + 37;
1265 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1266 priv->curbssparams.channel))
1267 priv->mesh_tlv = 0;
1268 }
1269 if (priv->mesh_tlv) {
1270 lbs_add_mesh(priv);
1271
1272 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1273 lbs_pr_err("cannot register lbs_mesh attribute\n");
1274
1275 /* While rtap isn't related to mesh, only mesh-enabled
1276 * firmware implements the rtap functionality via
1277 * CMD_802_11_MONITOR_MODE.
1278 */
1279 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1280 lbs_pr_err("cannot register lbs_rtap attribute\n");
1281 }
1282 }
1283
1284 lbs_debugfs_init_one(priv, dev);
1285
1286 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1287
1288 ret = 0;
1289
1290 done:
1291 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1292 return ret;
1293 }
1294 EXPORT_SYMBOL_GPL(lbs_start_card);
1295
1296
1297 void lbs_stop_card(struct lbs_private *priv)
1298 {
1299 struct net_device *dev = priv->dev;
1300 struct cmd_ctrl_node *cmdnode;
1301 unsigned long flags;
1302
1303 lbs_deb_enter(LBS_DEB_MAIN);
1304
1305 if (!priv)
1306 goto out;
1307
1308 netif_stop_queue(priv->dev);
1309 netif_carrier_off(priv->dev);
1310
1311 lbs_debugfs_remove_one(priv);
1312 if (priv->mesh_tlv) {
1313 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1314 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1315 }
1316
1317 /* Flush pending command nodes */
1318 del_timer_sync(&priv->command_timer);
1319 spin_lock_irqsave(&priv->driver_lock, flags);
1320 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1321 cmdnode->result = -ENOENT;
1322 cmdnode->cmdwaitqwoken = 1;
1323 wake_up_interruptible(&cmdnode->cmdwait_q);
1324 }
1325 spin_unlock_irqrestore(&priv->driver_lock, flags);
1326
1327 unregister_netdev(dev);
1328
1329 out:
1330 lbs_deb_leave(LBS_DEB_MAIN);
1331 }
1332 EXPORT_SYMBOL_GPL(lbs_stop_card);
1333
1334
1335 /**
1336 * @brief This function adds mshX interface
1337 *
1338 * @param priv A pointer to the struct lbs_private structure
1339 * @return 0 if successful, -X otherwise
1340 */
1341 static int lbs_add_mesh(struct lbs_private *priv)
1342 {
1343 struct net_device *mesh_dev = NULL;
1344 int ret = 0;
1345
1346 lbs_deb_enter(LBS_DEB_MESH);
1347
1348 /* Allocate a virtual mesh device */
1349 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1350 lbs_deb_mesh("init mshX device failed\n");
1351 ret = -ENOMEM;
1352 goto done;
1353 }
1354 mesh_dev->priv = priv;
1355 priv->mesh_dev = mesh_dev;
1356
1357 mesh_dev->open = lbs_dev_open;
1358 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1359 mesh_dev->stop = lbs_mesh_stop;
1360 mesh_dev->get_stats = lbs_get_stats;
1361 mesh_dev->set_mac_address = lbs_set_mac_address;
1362 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1363 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1364 sizeof(priv->dev->dev_addr));
1365
1366 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1367
1368 #ifdef WIRELESS_EXT
1369 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1370 #endif
1371 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1372 mesh_dev->set_multicast_list = lbs_set_multicast_list;
1373 /* Register virtual mesh interface */
1374 ret = register_netdev(mesh_dev);
1375 if (ret) {
1376 lbs_pr_err("cannot register mshX virtual interface\n");
1377 goto err_free;
1378 }
1379
1380 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1381 if (ret)
1382 goto err_unregister;
1383
1384 lbs_persist_config_init(mesh_dev);
1385
1386 /* Everything successful */
1387 ret = 0;
1388 goto done;
1389
1390 err_unregister:
1391 unregister_netdev(mesh_dev);
1392
1393 err_free:
1394 free_netdev(mesh_dev);
1395
1396 done:
1397 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1398 return ret;
1399 }
1400
1401 static void lbs_remove_mesh(struct lbs_private *priv)
1402 {
1403 struct net_device *mesh_dev;
1404
1405
1406 mesh_dev = priv->mesh_dev;
1407 if (!mesh_dev)
1408 return;
1409
1410 lbs_deb_enter(LBS_DEB_MESH);
1411 netif_stop_queue(mesh_dev);
1412 netif_carrier_off(mesh_dev);
1413 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1414 lbs_persist_config_remove(mesh_dev);
1415 unregister_netdev(mesh_dev);
1416 priv->mesh_dev = NULL;
1417 free_netdev(mesh_dev);
1418 lbs_deb_leave(LBS_DEB_MESH);
1419 }
1420
1421 /**
1422 * @brief This function finds the CFP in
1423 * region_cfp_table based on region and band parameter.
1424 *
1425 * @param region The region code
1426 * @param band The band
1427 * @param cfp_no A pointer to CFP number
1428 * @return A pointer to CFP
1429 */
1430 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1431 {
1432 int i, end;
1433
1434 lbs_deb_enter(LBS_DEB_MAIN);
1435
1436 end = ARRAY_SIZE(region_cfp_table);
1437
1438 for (i = 0; i < end ; i++) {
1439 lbs_deb_main("region_cfp_table[i].region=%d\n",
1440 region_cfp_table[i].region);
1441 if (region_cfp_table[i].region == region) {
1442 *cfp_no = region_cfp_table[i].cfp_no_BG;
1443 lbs_deb_leave(LBS_DEB_MAIN);
1444 return region_cfp_table[i].cfp_BG;
1445 }
1446 }
1447
1448 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1449 return NULL;
1450 }
1451
1452 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1453 {
1454 int ret = 0;
1455 int i = 0;
1456
1457 struct chan_freq_power *cfp;
1458 int cfp_no;
1459
1460 lbs_deb_enter(LBS_DEB_MAIN);
1461
1462 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1463
1464 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1465 if (cfp != NULL) {
1466 priv->region_channel[i].nrcfp = cfp_no;
1467 priv->region_channel[i].CFP = cfp;
1468 } else {
1469 lbs_deb_main("wrong region code %#x in band B/G\n",
1470 region);
1471 ret = -1;
1472 goto out;
1473 }
1474 priv->region_channel[i].valid = 1;
1475 priv->region_channel[i].region = region;
1476 priv->region_channel[i].band = band;
1477 i++;
1478 out:
1479 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1480 return ret;
1481 }
1482
1483 void lbs_queue_event(struct lbs_private *priv, u32 event)
1484 {
1485 unsigned long flags;
1486
1487 lbs_deb_enter(LBS_DEB_THREAD);
1488 spin_lock_irqsave(&priv->driver_lock, flags);
1489
1490 if (priv->psstate == PS_STATE_SLEEP)
1491 priv->psstate = PS_STATE_AWAKE;
1492
1493 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1494
1495 wake_up_interruptible(&priv->waitq);
1496
1497 spin_unlock_irqrestore(&priv->driver_lock, flags);
1498 lbs_deb_leave(LBS_DEB_THREAD);
1499 }
1500 EXPORT_SYMBOL_GPL(lbs_queue_event);
1501
1502 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1503 {
1504 lbs_deb_enter(LBS_DEB_THREAD);
1505
1506 if (priv->psstate == PS_STATE_SLEEP)
1507 priv->psstate = PS_STATE_AWAKE;
1508
1509 /* Swap buffers by flipping the response index */
1510 BUG_ON(resp_idx > 1);
1511 priv->resp_idx = resp_idx;
1512
1513 wake_up_interruptible(&priv->waitq);
1514
1515 lbs_deb_leave(LBS_DEB_THREAD);
1516 }
1517 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1518
1519 static int __init lbs_init_module(void)
1520 {
1521 lbs_deb_enter(LBS_DEB_MAIN);
1522 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1523 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1524 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1525 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1526 lbs_debugfs_init();
1527 lbs_deb_leave(LBS_DEB_MAIN);
1528 return 0;
1529 }
1530
1531 static void __exit lbs_exit_module(void)
1532 {
1533 lbs_deb_enter(LBS_DEB_MAIN);
1534 lbs_debugfs_remove();
1535 lbs_deb_leave(LBS_DEB_MAIN);
1536 }
1537
1538 /*
1539 * rtap interface support fuctions
1540 */
1541
1542 static int lbs_rtap_open(struct net_device *dev)
1543 {
1544 /* Yes, _stop_ the queue. Because we don't support injection */
1545 lbs_deb_enter(LBS_DEB_MAIN);
1546 netif_carrier_off(dev);
1547 netif_stop_queue(dev);
1548 lbs_deb_leave(LBS_DEB_LEAVE);
1549 return 0;
1550 }
1551
1552 static int lbs_rtap_stop(struct net_device *dev)
1553 {
1554 lbs_deb_enter(LBS_DEB_MAIN);
1555 lbs_deb_leave(LBS_DEB_MAIN);
1556 return 0;
1557 }
1558
1559 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1560 {
1561 netif_stop_queue(dev);
1562 return NETDEV_TX_BUSY;
1563 }
1564
1565 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1566 {
1567 struct lbs_private *priv = dev->priv;
1568 lbs_deb_enter(LBS_DEB_NET);
1569 return &priv->stats;
1570 }
1571
1572
1573 static void lbs_remove_rtap(struct lbs_private *priv)
1574 {
1575 lbs_deb_enter(LBS_DEB_MAIN);
1576 if (priv->rtap_net_dev == NULL)
1577 goto out;
1578 unregister_netdev(priv->rtap_net_dev);
1579 free_netdev(priv->rtap_net_dev);
1580 priv->rtap_net_dev = NULL;
1581 out:
1582 lbs_deb_leave(LBS_DEB_MAIN);
1583 }
1584
1585 static int lbs_add_rtap(struct lbs_private *priv)
1586 {
1587 int ret = 0;
1588 struct net_device *rtap_dev;
1589
1590 lbs_deb_enter(LBS_DEB_MAIN);
1591 if (priv->rtap_net_dev) {
1592 ret = -EPERM;
1593 goto out;
1594 }
1595
1596 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1597 if (rtap_dev == NULL) {
1598 ret = -ENOMEM;
1599 goto out;
1600 }
1601
1602 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1603 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1604 rtap_dev->open = lbs_rtap_open;
1605 rtap_dev->stop = lbs_rtap_stop;
1606 rtap_dev->get_stats = lbs_rtap_get_stats;
1607 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1608 rtap_dev->priv = priv;
1609 SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1610
1611 ret = register_netdev(rtap_dev);
1612 if (ret) {
1613 free_netdev(rtap_dev);
1614 goto out;
1615 }
1616 priv->rtap_net_dev = rtap_dev;
1617
1618 out:
1619 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1620 return ret;
1621 }
1622
1623 #ifndef CONFIG_IEEE80211
1624 const char *escape_essid(const char *essid, u8 essid_len)
1625 {
1626 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1627 const char *s = essid;
1628 char *d = escaped;
1629
1630 if (ieee80211_is_empty_essid(essid, essid_len)) {
1631 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1632 return escaped;
1633 }
1634
1635 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1636 while (essid_len--) {
1637 if (*s == '\0') {
1638 *d++ = '\\';
1639 *d++ = '0';
1640 s++;
1641 } else {
1642 *d++ = *s++;
1643 }
1644 }
1645 *d = '\0';
1646 return escaped;
1647 }
1648 #endif
1649
1650 module_init(lbs_init_module);
1651 module_exit(lbs_exit_module);
1652
1653 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1654 MODULE_AUTHOR("Marvell International Ltd.");
1655 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)