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[PATCH] libertas: push WEXT scan requests to a work queue
[deliverable/linux.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/freezer.h>
10 #include <linux/etherdevice.h>
11 #include <linux/netdevice.h>
12 #include <linux/if_arp.h>
13 #include <linux/kthread.h>
14
15 #include <net/iw_handler.h>
16 #include <net/ieee80211.h>
17
18 #include "host.h"
19 #include "decl.h"
20 #include "dev.h"
21 #include "wext.h"
22 #include "debugfs.h"
23 #include "assoc.h"
24 #include "join.h"
25
26 #define DRIVER_RELEASE_VERSION "322.p1"
27 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
28 #ifdef DEBUG
29 "-dbg"
30 #endif
31 "";
32
33
34 /* Module parameters */
35 unsigned int libertas_debug = 0;
36 module_param(libertas_debug, int, 0644);
37 EXPORT_SYMBOL_GPL(libertas_debug);
38
39
40 #define WLAN_TX_PWR_DEFAULT 20 /*100mW */
41 #define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
42 #define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
43 #define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
44 #define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
45
46 /* Format { channel, frequency (MHz), maxtxpower } */
47 /* band: 'B/G', region: USA FCC/Canada IC */
48 static struct chan_freq_power channel_freq_power_US_BG[] = {
49 {1, 2412, WLAN_TX_PWR_US_DEFAULT},
50 {2, 2417, WLAN_TX_PWR_US_DEFAULT},
51 {3, 2422, WLAN_TX_PWR_US_DEFAULT},
52 {4, 2427, WLAN_TX_PWR_US_DEFAULT},
53 {5, 2432, WLAN_TX_PWR_US_DEFAULT},
54 {6, 2437, WLAN_TX_PWR_US_DEFAULT},
55 {7, 2442, WLAN_TX_PWR_US_DEFAULT},
56 {8, 2447, WLAN_TX_PWR_US_DEFAULT},
57 {9, 2452, WLAN_TX_PWR_US_DEFAULT},
58 {10, 2457, WLAN_TX_PWR_US_DEFAULT},
59 {11, 2462, WLAN_TX_PWR_US_DEFAULT}
60 };
61
62 /* band: 'B/G', region: Europe ETSI */
63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
64 {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
65 {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
66 {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
67 {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
68 {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
69 {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
70 {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
71 {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
72 {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
73 {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
74 {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
75 {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
76 {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
77 };
78
79 /* band: 'B/G', region: Spain */
80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
81 {10, 2457, WLAN_TX_PWR_DEFAULT},
82 {11, 2462, WLAN_TX_PWR_DEFAULT}
83 };
84
85 /* band: 'B/G', region: France */
86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
87 {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
88 {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
89 {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
90 {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
91 };
92
93 /* band: 'B/G', region: Japan */
94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
95 {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
96 {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
97 {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
98 {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
99 {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
100 {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
101 {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
102 {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
103 {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
104 {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
105 {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
106 {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
107 {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
108 {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
109 };
110
111 /**
112 * the structure for channel, frequency and power
113 */
114 struct region_cfp_table {
115 u8 region;
116 struct chan_freq_power *cfp_BG;
117 int cfp_no_BG;
118 };
119
120 /**
121 * the structure for the mapping between region and CFP
122 */
123 static struct region_cfp_table region_cfp_table[] = {
124 {0x10, /*US FCC */
125 channel_freq_power_US_BG,
126 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
127 }
128 ,
129 {0x20, /*CANADA IC */
130 channel_freq_power_US_BG,
131 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
132 }
133 ,
134 {0x30, /*EU*/ channel_freq_power_EU_BG,
135 sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
136 }
137 ,
138 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
139 sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
140 }
141 ,
142 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
143 sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
144 }
145 ,
146 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
147 sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
148 }
149 ,
150 /*Add new region here */
151 };
152
153 /**
154 * the table to keep region code
155 */
156 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
157 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
158
159 /**
160 * 802.11b/g supported bitrates (in 500Kb/s units)
161 */
162 u8 libertas_bg_rates[MAX_RATES] =
163 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
164 0x00, 0x00 };
165
166 /**
167 * FW rate table. FW refers to rates by their index in this table, not by the
168 * rate value itself. Values of 0x00 are
169 * reserved positions.
170 */
171 static u8 fw_data_rates[MAX_RATES] =
172 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
173 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
174 };
175
176 /**
177 * @brief use index to get the data rate
178 *
179 * @param idx The index of data rate
180 * @return data rate or 0
181 */
182 u32 libertas_fw_index_to_data_rate(u8 idx)
183 {
184 if (idx >= sizeof(fw_data_rates))
185 idx = 0;
186 return fw_data_rates[idx];
187 }
188
189 /**
190 * @brief use rate to get the index
191 *
192 * @param rate data rate
193 * @return index or 0
194 */
195 u8 libertas_data_rate_to_fw_index(u32 rate)
196 {
197 u8 i;
198
199 if (!rate)
200 return 0;
201
202 for (i = 0; i < sizeof(fw_data_rates); i++) {
203 if (rate == fw_data_rates[i])
204 return i;
205 }
206 return 0;
207 }
208
209 /**
210 * Attributes exported through sysfs
211 */
212
213 /**
214 * @brief Get function for sysfs attribute anycast_mask
215 */
216 static ssize_t libertas_anycast_get(struct device * dev,
217 struct device_attribute *attr, char * buf)
218 {
219 struct cmd_ds_mesh_access mesh_access;
220
221 memset(&mesh_access, 0, sizeof(mesh_access));
222 libertas_prepare_and_send_command(to_net_dev(dev)->priv,
223 CMD_MESH_ACCESS,
224 CMD_ACT_MESH_GET_ANYCAST,
225 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
226
227 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
228 }
229
230 /**
231 * @brief Set function for sysfs attribute anycast_mask
232 */
233 static ssize_t libertas_anycast_set(struct device * dev,
234 struct device_attribute *attr, const char * buf, size_t count)
235 {
236 struct cmd_ds_mesh_access mesh_access;
237 uint32_t datum;
238
239 memset(&mesh_access, 0, sizeof(mesh_access));
240 sscanf(buf, "%x", &datum);
241 mesh_access.data[0] = cpu_to_le32(datum);
242
243 libertas_prepare_and_send_command((to_net_dev(dev))->priv,
244 CMD_MESH_ACCESS,
245 CMD_ACT_MESH_SET_ANYCAST,
246 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
247 return strlen(buf);
248 }
249
250 int libertas_add_rtap(wlan_private *priv);
251 void libertas_remove_rtap(wlan_private *priv);
252
253 /**
254 * Get function for sysfs attribute rtap
255 */
256 static ssize_t libertas_rtap_get(struct device * dev,
257 struct device_attribute *attr, char * buf)
258 {
259 wlan_private *priv = (wlan_private *) dev->driver_data;
260 wlan_adapter *adapter = priv->adapter;
261 return snprintf(buf, 5, "0x%X\n", adapter->monitormode);
262 }
263
264 /**
265 * Set function for sysfs attribute rtap
266 */
267 static ssize_t libertas_rtap_set(struct device * dev,
268 struct device_attribute *attr, const char * buf, size_t count)
269 {
270 int monitor_mode;
271 wlan_private *priv = (wlan_private *) dev->driver_data;
272 wlan_adapter *adapter = priv->adapter;
273
274 sscanf(buf, "%x", &monitor_mode);
275 if (monitor_mode != WLAN_MONITOR_OFF) {
276 if(adapter->monitormode == monitor_mode)
277 return strlen(buf);
278 if (adapter->monitormode == WLAN_MONITOR_OFF) {
279 if (adapter->mode == IW_MODE_INFRA)
280 libertas_send_deauthentication(priv);
281 else if (adapter->mode == IW_MODE_ADHOC)
282 libertas_stop_adhoc_network(priv);
283 libertas_add_rtap(priv);
284 }
285 adapter->monitormode = monitor_mode;
286 }
287
288 else {
289 if(adapter->monitormode == WLAN_MONITOR_OFF)
290 return strlen(buf);
291 adapter->monitormode = WLAN_MONITOR_OFF;
292 libertas_remove_rtap(priv);
293 netif_wake_queue(priv->dev);
294 netif_wake_queue(priv->mesh_dev);
295 }
296
297 libertas_prepare_and_send_command(priv,
298 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
299 CMD_OPTION_WAITFORRSP, 0, &adapter->monitormode);
300 return strlen(buf);
301 }
302
303 /**
304 * libertas_rtap attribute to be exported per mshX interface
305 * through sysfs (/sys/class/net/mshX/libertas-rtap)
306 */
307 static DEVICE_ATTR(libertas_rtap, 0644, libertas_rtap_get,
308 libertas_rtap_set );
309
310 /**
311 * anycast_mask attribute to be exported per mshX interface
312 * through sysfs (/sys/class/net/mshX/anycast_mask)
313 */
314 static DEVICE_ATTR(anycast_mask, 0644, libertas_anycast_get, libertas_anycast_set);
315
316 static ssize_t libertas_autostart_enabled_get(struct device * dev,
317 struct device_attribute *attr, char * buf)
318 {
319 struct cmd_ds_mesh_access mesh_access;
320
321 memset(&mesh_access, 0, sizeof(mesh_access));
322 libertas_prepare_and_send_command(to_net_dev(dev)->priv,
323 CMD_MESH_ACCESS,
324 CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
325 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
326
327 return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
328 }
329
330 static ssize_t libertas_autostart_enabled_set(struct device * dev,
331 struct device_attribute *attr, const char * buf, size_t count)
332 {
333 struct cmd_ds_mesh_access mesh_access;
334 uint32_t datum;
335 wlan_private * priv = (to_net_dev(dev))->priv;
336 int ret;
337
338 memset(&mesh_access, 0, sizeof(mesh_access));
339 sscanf(buf, "%d", &datum);
340 mesh_access.data[0] = cpu_to_le32(datum);
341
342 ret = libertas_prepare_and_send_command(priv,
343 CMD_MESH_ACCESS,
344 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
345 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
346 if (ret == 0)
347 priv->mesh_autostart_enabled = datum ? 1 : 0;
348
349 return strlen(buf);
350 }
351
352 static DEVICE_ATTR(autostart_enabled, 0644,
353 libertas_autostart_enabled_get, libertas_autostart_enabled_set);
354
355 static struct attribute *libertas_mesh_sysfs_entries[] = {
356 &dev_attr_anycast_mask.attr,
357 &dev_attr_autostart_enabled.attr,
358 NULL,
359 };
360
361 static struct attribute_group libertas_mesh_attr_group = {
362 .attrs = libertas_mesh_sysfs_entries,
363 };
364
365 /**
366 * @brief Check if the device can be open and wait if necessary.
367 *
368 * @param dev A pointer to net_device structure
369 * @return 0
370 *
371 * For USB adapter, on some systems the device open handler will be
372 * called before FW ready. Use the following flag check and wait
373 * function to work around the issue.
374 *
375 */
376 static int pre_open_check(struct net_device *dev)
377 {
378 wlan_private *priv = (wlan_private *) dev->priv;
379 wlan_adapter *adapter = priv->adapter;
380 int i = 0;
381
382 while (!adapter->fw_ready && i < 20) {
383 i++;
384 msleep_interruptible(100);
385 }
386 if (!adapter->fw_ready) {
387 lbs_pr_err("firmware not ready\n");
388 return -1;
389 }
390
391 return 0;
392 }
393
394 /**
395 * @brief This function opens the device
396 *
397 * @param dev A pointer to net_device structure
398 * @return 0
399 */
400 static int libertas_dev_open(struct net_device *dev)
401 {
402 wlan_private *priv = (wlan_private *) dev->priv;
403 wlan_adapter *adapter = priv->adapter;
404
405 lbs_deb_enter(LBS_DEB_NET);
406
407 priv->open = 1;
408
409 if (adapter->connect_status == LIBERTAS_CONNECTED) {
410 netif_carrier_on(priv->dev);
411 if (priv->mesh_dev)
412 netif_carrier_on(priv->mesh_dev);
413 } else {
414 netif_carrier_off(priv->dev);
415 if (priv->mesh_dev)
416 netif_carrier_off(priv->mesh_dev);
417 }
418
419 lbs_deb_leave(LBS_DEB_NET);
420 return 0;
421 }
422 /**
423 * @brief This function opens the mshX interface
424 *
425 * @param dev A pointer to net_device structure
426 * @return 0
427 */
428 static int libertas_mesh_open(struct net_device *dev)
429 {
430 wlan_private *priv = (wlan_private *) dev->priv ;
431
432 if (pre_open_check(dev) == -1)
433 return -1;
434 priv->mesh_open = 1 ;
435 netif_wake_queue(priv->mesh_dev);
436 if (priv->infra_open == 0)
437 return libertas_dev_open(priv->dev) ;
438 return 0;
439 }
440
441 /**
442 * @brief This function opens the ethX interface
443 *
444 * @param dev A pointer to net_device structure
445 * @return 0
446 */
447 static int libertas_open(struct net_device *dev)
448 {
449 wlan_private *priv = (wlan_private *) dev->priv ;
450
451 if(pre_open_check(dev) == -1)
452 return -1;
453 priv->infra_open = 1 ;
454 netif_wake_queue(priv->dev);
455 if (priv->open == 0)
456 return libertas_dev_open(priv->dev) ;
457 return 0;
458 }
459
460 static int libertas_dev_close(struct net_device *dev)
461 {
462 wlan_private *priv = dev->priv;
463
464 lbs_deb_enter(LBS_DEB_NET);
465
466 netif_carrier_off(priv->dev);
467 priv->open = 0;
468
469 lbs_deb_leave(LBS_DEB_NET);
470 return 0;
471 }
472
473 /**
474 * @brief This function closes the mshX interface
475 *
476 * @param dev A pointer to net_device structure
477 * @return 0
478 */
479 static int libertas_mesh_close(struct net_device *dev)
480 {
481 wlan_private *priv = (wlan_private *) (dev->priv);
482
483 priv->mesh_open = 0;
484 netif_stop_queue(priv->mesh_dev);
485 if (priv->infra_open == 0)
486 return libertas_dev_close(dev);
487 else
488 return 0;
489 }
490
491 /**
492 * @brief This function closes the ethX interface
493 *
494 * @param dev A pointer to net_device structure
495 * @return 0
496 */
497 static int libertas_close(struct net_device *dev)
498 {
499 wlan_private *priv = (wlan_private *) dev->priv;
500
501 netif_stop_queue(dev);
502 priv->infra_open = 0;
503 if (priv->mesh_open == 0)
504 return libertas_dev_close(dev);
505 else
506 return 0;
507 }
508
509
510 static int libertas_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
511 {
512 int ret = 0;
513 wlan_private *priv = dev->priv;
514
515 lbs_deb_enter(LBS_DEB_NET);
516
517 if (priv->dnld_sent || priv->adapter->TxLockFlag) {
518 priv->stats.tx_dropped++;
519 goto done;
520 }
521
522 netif_stop_queue(priv->dev);
523 if (priv->mesh_dev)
524 netif_stop_queue(priv->mesh_dev);
525
526 if (libertas_process_tx(priv, skb) == 0)
527 dev->trans_start = jiffies;
528 done:
529 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
530 return ret;
531 }
532
533 /**
534 * @brief Mark mesh packets and handover them to libertas_hard_start_xmit
535 *
536 */
537 static int libertas_mesh_pre_start_xmit(struct sk_buff *skb,
538 struct net_device *dev)
539 {
540 wlan_private *priv = dev->priv;
541 int ret;
542
543 lbs_deb_enter(LBS_DEB_MESH);
544 if(priv->adapter->monitormode != WLAN_MONITOR_OFF) {
545 netif_stop_queue(dev);
546 return -EOPNOTSUPP;
547 }
548
549 SET_MESH_FRAME(skb);
550
551 ret = libertas_hard_start_xmit(skb, priv->dev);
552 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
553 return ret;
554 }
555
556 /**
557 * @brief Mark non-mesh packets and handover them to libertas_hard_start_xmit
558 *
559 */
560 static int libertas_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
561 {
562 wlan_private *priv = dev->priv;
563 int ret;
564
565 lbs_deb_enter(LBS_DEB_NET);
566
567 if(priv->adapter->monitormode != WLAN_MONITOR_OFF) {
568 netif_stop_queue(dev);
569 return -EOPNOTSUPP;
570 }
571
572 UNSET_MESH_FRAME(skb);
573
574 ret = libertas_hard_start_xmit(skb, dev);
575 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
576 return ret;
577 }
578
579 static void libertas_tx_timeout(struct net_device *dev)
580 {
581 wlan_private *priv = (wlan_private *) dev->priv;
582
583 lbs_deb_enter(LBS_DEB_TX);
584
585 lbs_pr_err("tx watch dog timeout\n");
586
587 priv->dnld_sent = DNLD_RES_RECEIVED;
588 dev->trans_start = jiffies;
589
590 if (priv->adapter->currenttxskb) {
591 if (priv->adapter->monitormode != WLAN_MONITOR_OFF) {
592 /* If we are here, we have not received feedback from
593 the previous packet. Assume TX_FAIL and move on. */
594 priv->adapter->eventcause = 0x01000000;
595 libertas_send_tx_feedback(priv);
596 } else
597 wake_up_interruptible(&priv->waitq);
598 } else if (priv->adapter->connect_status == LIBERTAS_CONNECTED) {
599 netif_wake_queue(priv->dev);
600 if (priv->mesh_dev)
601 netif_wake_queue(priv->mesh_dev);
602 }
603
604 lbs_deb_leave(LBS_DEB_TX);
605 }
606
607 /**
608 * @brief This function returns the network statistics
609 *
610 * @param dev A pointer to wlan_private structure
611 * @return A pointer to net_device_stats structure
612 */
613 static struct net_device_stats *libertas_get_stats(struct net_device *dev)
614 {
615 wlan_private *priv = (wlan_private *) dev->priv;
616
617 return &priv->stats;
618 }
619
620 static int libertas_set_mac_address(struct net_device *dev, void *addr)
621 {
622 int ret = 0;
623 wlan_private *priv = (wlan_private *) dev->priv;
624 wlan_adapter *adapter = priv->adapter;
625 struct sockaddr *phwaddr = addr;
626
627 lbs_deb_enter(LBS_DEB_NET);
628
629 /* In case it was called from the mesh device */
630 dev = priv->dev ;
631
632 memset(adapter->current_addr, 0, ETH_ALEN);
633
634 /* dev->dev_addr is 8 bytes */
635 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
636
637 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
638 memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
639
640 ret = libertas_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
641 CMD_ACT_SET,
642 CMD_OPTION_WAITFORRSP, 0, NULL);
643
644 if (ret) {
645 lbs_deb_net("set MAC address failed\n");
646 ret = -1;
647 goto done;
648 }
649
650 lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN);
651 memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
652 if (priv->mesh_dev)
653 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
654
655 done:
656 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
657 return ret;
658 }
659
660 static int libertas_copy_multicast_address(wlan_adapter * adapter,
661 struct net_device *dev)
662 {
663 int i = 0;
664 struct dev_mc_list *mcptr = dev->mc_list;
665
666 for (i = 0; i < dev->mc_count; i++) {
667 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
668 mcptr = mcptr->next;
669 }
670
671 return i;
672
673 }
674
675 static void libertas_set_multicast_list(struct net_device *dev)
676 {
677 wlan_private *priv = dev->priv;
678 wlan_adapter *adapter = priv->adapter;
679 int oldpacketfilter;
680
681 lbs_deb_enter(LBS_DEB_NET);
682
683 oldpacketfilter = adapter->currentpacketfilter;
684
685 if (dev->flags & IFF_PROMISC) {
686 lbs_deb_net("enable promiscuous mode\n");
687 adapter->currentpacketfilter |=
688 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
689 adapter->currentpacketfilter &=
690 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
691 CMD_ACT_MAC_MULTICAST_ENABLE);
692 } else {
693 /* Multicast */
694 adapter->currentpacketfilter &=
695 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
696
697 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
698 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
699 lbs_deb_net( "enabling all multicast\n");
700 adapter->currentpacketfilter |=
701 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
702 adapter->currentpacketfilter &=
703 ~CMD_ACT_MAC_MULTICAST_ENABLE;
704 } else {
705 adapter->currentpacketfilter &=
706 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
707
708 if (!dev->mc_count) {
709 lbs_deb_net("no multicast addresses, "
710 "disabling multicast\n");
711 adapter->currentpacketfilter &=
712 ~CMD_ACT_MAC_MULTICAST_ENABLE;
713 } else {
714 int i;
715
716 adapter->currentpacketfilter |=
717 CMD_ACT_MAC_MULTICAST_ENABLE;
718
719 adapter->nr_of_multicastmacaddr =
720 libertas_copy_multicast_address(adapter, dev);
721
722 lbs_deb_net("multicast addresses: %d\n",
723 dev->mc_count);
724
725 for (i = 0; i < dev->mc_count; i++) {
726 lbs_deb_net("Multicast address %d:"
727 MAC_FMT "\n", i,
728 adapter->multicastlist[i][0],
729 adapter->multicastlist[i][1],
730 adapter->multicastlist[i][2],
731 adapter->multicastlist[i][3],
732 adapter->multicastlist[i][4],
733 adapter->multicastlist[i][5]);
734 }
735 /* send multicast addresses to firmware */
736 libertas_prepare_and_send_command(priv,
737 CMD_MAC_MULTICAST_ADR,
738 CMD_ACT_SET, 0, 0,
739 NULL);
740 }
741 }
742 }
743
744 if (adapter->currentpacketfilter != oldpacketfilter) {
745 libertas_set_mac_packet_filter(priv);
746 }
747
748 lbs_deb_leave(LBS_DEB_NET);
749 }
750
751 /**
752 * @brief This function handles the major jobs in the WLAN driver.
753 * It handles all events generated by firmware, RX data received
754 * from firmware and TX data sent from kernel.
755 *
756 * @param data A pointer to wlan_thread structure
757 * @return 0
758 */
759 static int libertas_thread(void *data)
760 {
761 struct net_device *dev = data;
762 wlan_private *priv = dev->priv;
763 wlan_adapter *adapter = priv->adapter;
764 wait_queue_t wait;
765 u8 ireg = 0;
766
767 lbs_deb_enter(LBS_DEB_THREAD);
768
769 init_waitqueue_entry(&wait, current);
770
771 for (;;) {
772 lbs_deb_thread( "main-thread 111: intcounter=%d "
773 "currenttxskb=%p dnld_sent=%d\n",
774 adapter->intcounter,
775 adapter->currenttxskb, priv->dnld_sent);
776
777 add_wait_queue(&priv->waitq, &wait);
778 set_current_state(TASK_INTERRUPTIBLE);
779 spin_lock_irq(&adapter->driver_lock);
780 if ((adapter->psstate == PS_STATE_SLEEP) ||
781 (!adapter->intcounter
782 && (priv->dnld_sent || adapter->cur_cmd ||
783 list_empty(&adapter->cmdpendingq)))) {
784 lbs_deb_thread(
785 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
786 adapter->connect_status, adapter->intcounter,
787 adapter->psmode, adapter->psstate);
788 spin_unlock_irq(&adapter->driver_lock);
789 schedule();
790 } else
791 spin_unlock_irq(&adapter->driver_lock);
792
793
794 lbs_deb_thread(
795 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
796 "dnld_sent=%d\n", adapter->intcounter,
797 adapter->currenttxskb, priv->dnld_sent);
798
799 set_current_state(TASK_RUNNING);
800 remove_wait_queue(&priv->waitq, &wait);
801 try_to_freeze();
802
803 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
804 "dnld_sent=%d\n",
805 adapter->intcounter,
806 adapter->currenttxskb, priv->dnld_sent);
807
808 if (kthread_should_stop()
809 || adapter->surpriseremoved) {
810 lbs_deb_thread(
811 "main-thread: break from main thread: surpriseremoved=0x%x\n",
812 adapter->surpriseremoved);
813 break;
814 }
815
816
817 spin_lock_irq(&adapter->driver_lock);
818 if (adapter->intcounter) {
819 u8 int_status;
820 adapter->intcounter = 0;
821 int_status = priv->hw_get_int_status(priv, &ireg);
822
823 if (int_status) {
824 lbs_deb_thread(
825 "main-thread: reading HOST_INT_STATUS_REG failed\n");
826 spin_unlock_irq(&adapter->driver_lock);
827 continue;
828 }
829 adapter->hisregcpy |= ireg;
830 }
831
832 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
833 "dnld_sent=%d\n",
834 adapter->intcounter,
835 adapter->currenttxskb, priv->dnld_sent);
836
837 /* command response? */
838 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
839 lbs_deb_thread("main-thread: cmd response ready\n");
840
841 adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
842 spin_unlock_irq(&adapter->driver_lock);
843 libertas_process_rx_command(priv);
844 spin_lock_irq(&adapter->driver_lock);
845 }
846
847 /* Any Card Event */
848 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
849 lbs_deb_thread("main-thread: Card Event Activity\n");
850
851 adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
852
853 if (priv->hw_read_event_cause(priv)) {
854 lbs_pr_alert(
855 "main-thread: hw_read_event_cause failed\n");
856 spin_unlock_irq(&adapter->driver_lock);
857 continue;
858 }
859 spin_unlock_irq(&adapter->driver_lock);
860 libertas_process_event(priv);
861 } else
862 spin_unlock_irq(&adapter->driver_lock);
863
864 /* Check if we need to confirm Sleep Request received previously */
865 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
866 if (!priv->dnld_sent && !adapter->cur_cmd) {
867 if (adapter->connect_status ==
868 LIBERTAS_CONNECTED) {
869 lbs_deb_thread(
870 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
871 "dnld_sent=%d cur_cmd=%p, confirm now\n",
872 adapter->intcounter,
873 adapter->currenttxskb,
874 priv->dnld_sent,
875 adapter->cur_cmd);
876
877 libertas_ps_confirm_sleep(priv,
878 (u16) adapter->psmode);
879 } else {
880 /* workaround for firmware sending
881 * deauth/linkloss event immediately
882 * after sleep request, remove this
883 * after firmware fixes it
884 */
885 adapter->psstate = PS_STATE_AWAKE;
886 lbs_pr_alert(
887 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
888 }
889 }
890 }
891
892 /* The PS state is changed during processing of Sleep Request
893 * event above
894 */
895 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
896 (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
897 continue;
898
899 /* Execute the next command */
900 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
901 libertas_execute_next_command(priv);
902
903 /* Wake-up command waiters which can't sleep in
904 * libertas_prepare_and_send_command
905 */
906 if (!adapter->nr_cmd_pending)
907 wake_up_all(&adapter->cmd_pending);
908
909 libertas_tx_runqueue(priv);
910 }
911
912 del_timer(&adapter->command_timer);
913 adapter->nr_cmd_pending = 0;
914 wake_up_all(&adapter->cmd_pending);
915
916 lbs_deb_leave(LBS_DEB_THREAD);
917 return 0;
918 }
919
920 /**
921 * @brief This function downloads firmware image, gets
922 * HW spec from firmware and set basic parameters to
923 * firmware.
924 *
925 * @param priv A pointer to wlan_private structure
926 * @return 0 or -1
927 */
928 static int wlan_setup_station_hw(wlan_private * priv)
929 {
930 int ret = -1;
931 wlan_adapter *adapter = priv->adapter;
932 struct cmd_ds_mesh_access mesh_access;
933
934 lbs_deb_enter(LBS_DEB_FW);
935
936 ret = priv->hw_prog_firmware(priv);
937
938 if (ret) {
939 lbs_deb_fw("bootloader in invalid state\n");
940 ret = -1;
941 goto done;
942 }
943
944 /*
945 * Read MAC address from HW
946 */
947 memset(adapter->current_addr, 0xff, ETH_ALEN);
948
949 ret = libertas_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
950 0, CMD_OPTION_WAITFORRSP, 0, NULL);
951
952 if (ret) {
953 ret = -1;
954 goto done;
955 }
956
957 libertas_set_mac_packet_filter(priv);
958
959 /* Get the supported Data rates */
960 ret = libertas_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
961 CMD_ACT_GET_TX_RATE,
962 CMD_OPTION_WAITFORRSP, 0, NULL);
963
964 if (ret) {
965 ret = -1;
966 goto done;
967 }
968
969 /* Disable mesh autostart */
970 if (priv->mesh_dev) {
971 memset(&mesh_access, 0, sizeof(mesh_access));
972 mesh_access.data[0] = cpu_to_le32(0);
973 ret = libertas_prepare_and_send_command(priv,
974 CMD_MESH_ACCESS,
975 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
976 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
977 if (ret) {
978 ret = -1;
979 goto done;
980 }
981 priv->mesh_autostart_enabled = 0;
982 }
983
984 ret = 0;
985 done:
986 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
987 return ret;
988 }
989
990 static void command_timer_fn(unsigned long data);
991
992 /**
993 * This function handles the timeout of command sending.
994 * It will re-send the same command again.
995 */
996 static void command_timer_fn(unsigned long data)
997 {
998 wlan_private *priv = (wlan_private *)data;
999 wlan_adapter *adapter = priv->adapter;
1000 struct cmd_ctrl_node *ptempnode;
1001 struct cmd_ds_command *cmd;
1002 unsigned long flags;
1003
1004 ptempnode = adapter->cur_cmd;
1005 if (ptempnode == NULL) {
1006 lbs_deb_fw("ptempnode empty\n");
1007 return;
1008 }
1009
1010 cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1011 if (!cmd) {
1012 lbs_deb_fw("cmd is NULL\n");
1013 return;
1014 }
1015
1016 lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1017
1018 if (!adapter->fw_ready)
1019 return;
1020
1021 spin_lock_irqsave(&adapter->driver_lock, flags);
1022 adapter->cur_cmd = NULL;
1023 spin_unlock_irqrestore(&adapter->driver_lock, flags);
1024
1025 lbs_deb_fw("re-sending same command because of timeout\n");
1026 libertas_queue_cmd(adapter, ptempnode, 0);
1027
1028 wake_up_interruptible(&priv->waitq);
1029
1030 return;
1031 }
1032
1033 static void libertas_free_adapter(wlan_private * priv)
1034 {
1035 wlan_adapter *adapter = priv->adapter;
1036
1037 if (!adapter) {
1038 lbs_deb_fw("why double free adapter?\n");
1039 return;
1040 }
1041
1042 lbs_deb_fw("free command buffer\n");
1043 libertas_free_cmd_buffer(priv);
1044
1045 lbs_deb_fw("free command_timer\n");
1046 del_timer(&adapter->command_timer);
1047
1048 lbs_deb_fw("free scan results table\n");
1049 kfree(adapter->networks);
1050 adapter->networks = NULL;
1051
1052 /* Free the adapter object itself */
1053 lbs_deb_fw("free adapter\n");
1054 kfree(adapter);
1055 priv->adapter = NULL;
1056 }
1057
1058 static int wlan_allocate_adapter(wlan_private * priv)
1059 {
1060 size_t bufsize;
1061 wlan_adapter *adapter = priv->adapter;
1062
1063 /* Allocate buffer to store the BSSID list */
1064 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1065 adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1066 if (!adapter->networks) {
1067 lbs_pr_err("Out of memory allocating beacons\n");
1068 libertas_free_adapter(priv);
1069 return -ENOMEM;
1070 }
1071
1072 /* Allocate the command buffers */
1073 libertas_allocate_cmd_buffer(priv);
1074
1075 memset(&adapter->libertas_ps_confirm_sleep, 0, sizeof(struct PS_CMD_ConfirmSleep));
1076 adapter->libertas_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1077 adapter->libertas_ps_confirm_sleep.command =
1078 cpu_to_le16(CMD_802_11_PS_MODE);
1079 adapter->libertas_ps_confirm_sleep.size =
1080 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1081 adapter->libertas_ps_confirm_sleep.result = 0;
1082 adapter->libertas_ps_confirm_sleep.action =
1083 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1084
1085 return 0;
1086 }
1087
1088 static void wlan_init_adapter(wlan_private * priv)
1089 {
1090 wlan_adapter *adapter = priv->adapter;
1091 int i;
1092
1093 adapter->connect_status = LIBERTAS_DISCONNECTED;
1094 memset(adapter->current_addr, 0xff, ETH_ALEN);
1095
1096 /* 802.11 specific */
1097 adapter->secinfo.wep_enabled = 0;
1098 for (i = 0; i < sizeof(adapter->wep_keys) / sizeof(adapter->wep_keys[0]);
1099 i++)
1100 memset(&adapter->wep_keys[i], 0, sizeof(struct enc_key));
1101 adapter->wep_tx_keyidx = 0;
1102 adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1103 adapter->mode = IW_MODE_INFRA;
1104
1105 adapter->pending_assoc_req = NULL;
1106 adapter->in_progress_assoc_req = NULL;
1107
1108 /* Initialize scan result lists */
1109 INIT_LIST_HEAD(&adapter->network_free_list);
1110 INIT_LIST_HEAD(&adapter->network_list);
1111 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1112 list_add_tail(&adapter->networks[i].list,
1113 &adapter->network_free_list);
1114 }
1115
1116 mutex_init(&adapter->lock);
1117
1118 memset(&adapter->curbssparams, 0, sizeof(adapter->curbssparams));
1119 adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1120
1121 /* PnP and power profile */
1122 adapter->surpriseremoved = 0;
1123
1124 adapter->currentpacketfilter =
1125 CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1126
1127 adapter->radioon = RADIO_ON;
1128
1129 adapter->auto_rate = 1;
1130 adapter->cur_rate = 0;
1131
1132 // set default capabilities
1133 adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1134
1135 adapter->psmode = WLAN802_11POWERMODECAM;
1136
1137 adapter->psstate = PS_STATE_FULL_POWER;
1138 adapter->needtowakeup = 0;
1139
1140 adapter->intcounter = 0;
1141
1142 adapter->currenttxskb = NULL;
1143
1144 memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1145 adapter->tx_queue_idx = 0;
1146 spin_lock_init(&adapter->txqueue_lock);
1147
1148 return;
1149 }
1150
1151 static int libertas_init_fw(wlan_private * priv)
1152 {
1153 int ret = -1;
1154 wlan_adapter *adapter = priv->adapter;
1155
1156 lbs_deb_enter(LBS_DEB_FW);
1157
1158 /* Allocate adapter structure */
1159 if ((ret = wlan_allocate_adapter(priv)) != 0)
1160 goto done;
1161
1162 /* init adapter structure */
1163 wlan_init_adapter(priv);
1164
1165 /* init timer etc. */
1166 setup_timer(&adapter->command_timer, command_timer_fn,
1167 (unsigned long)priv);
1168
1169 /* download fimrware etc. */
1170 if ((ret = wlan_setup_station_hw(priv)) != 0) {
1171 del_timer_sync(&adapter->command_timer);
1172 goto done;
1173 }
1174
1175 /* init 802.11d */
1176 libertas_init_11d(priv);
1177
1178 ret = 0;
1179 done:
1180 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
1181 return ret;
1182 }
1183
1184 /**
1185 * @brief This function adds the card. it will probe the
1186 * card, allocate the wlan_priv and initialize the device.
1187 *
1188 * @param card A pointer to card
1189 * @return A pointer to wlan_private structure
1190 */
1191 wlan_private *libertas_add_card(void *card, struct device *dmdev)
1192 {
1193 struct net_device *dev = NULL;
1194 wlan_private *priv = NULL;
1195
1196 lbs_deb_enter(LBS_DEB_NET);
1197
1198 /* Allocate an Ethernet device and register it */
1199 if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
1200 lbs_pr_err("init ethX device failed\n");
1201 return NULL;
1202 }
1203 priv = dev->priv;
1204
1205 /* allocate buffer for wlan_adapter */
1206 if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
1207 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
1208 goto err_kzalloc;
1209 }
1210
1211 priv->dev = dev;
1212 priv->card = card;
1213 priv->mesh_open = 0;
1214 priv->infra_open = 0;
1215
1216 SET_MODULE_OWNER(dev);
1217
1218 /* Setup the OS Interface to our functions */
1219 dev->open = libertas_open;
1220 dev->hard_start_xmit = libertas_pre_start_xmit;
1221 dev->stop = libertas_close;
1222 dev->set_mac_address = libertas_set_mac_address;
1223 dev->tx_timeout = libertas_tx_timeout;
1224 dev->get_stats = libertas_get_stats;
1225 dev->watchdog_timeo = 5 * HZ;
1226 dev->ethtool_ops = &libertas_ethtool_ops;
1227 #ifdef WIRELESS_EXT
1228 dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
1229 #endif
1230 #define NETIF_F_DYNALLOC 16
1231 dev->features |= NETIF_F_DYNALLOC;
1232 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1233 dev->set_multicast_list = libertas_set_multicast_list;
1234
1235 SET_NETDEV_DEV(dev, dmdev);
1236
1237 INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
1238 INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
1239
1240 spin_lock_init(&priv->adapter->driver_lock);
1241 init_waitqueue_head(&priv->adapter->cmd_pending);
1242 priv->adapter->nr_cmd_pending = 0;
1243 priv->rtap_net_dev = NULL;
1244 if (device_create_file(dmdev, &dev_attr_libertas_rtap))
1245 goto err_kzalloc;
1246 goto done;
1247
1248 err_kzalloc:
1249 free_netdev(dev);
1250 priv = NULL;
1251 done:
1252 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1253 return priv;
1254 }
1255 EXPORT_SYMBOL_GPL(libertas_add_card);
1256
1257 int libertas_activate_card(wlan_private *priv)
1258 {
1259 struct net_device *dev = priv->dev;
1260 int ret = -1;
1261
1262 lbs_deb_enter(LBS_DEB_MAIN);
1263
1264 lbs_deb_thread("Starting main thread...\n");
1265 init_waitqueue_head(&priv->waitq);
1266 priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
1267 if (IS_ERR(priv->main_thread)) {
1268 lbs_deb_thread("Error creating main thread.\n");
1269 goto done;
1270 }
1271
1272 priv->work_thread = create_singlethread_workqueue("libertas_worker");
1273 INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
1274 INIT_DELAYED_WORK(&priv->scan_work, libertas_scan_worker);
1275
1276 INIT_WORK(&priv->sync_channel, libertas_sync_channel);
1277
1278 /*
1279 * Register the device. Fillup the private data structure with
1280 * relevant information from the card and request for the required
1281 * IRQ.
1282 */
1283 if (priv->hw_register_dev(priv) < 0) {
1284 lbs_pr_err("failed to register WLAN device\n");
1285 goto err_registerdev;
1286 }
1287
1288 /* init FW and HW */
1289 if (libertas_init_fw(priv)) {
1290 lbs_pr_err("firmware init failed\n");
1291 goto err_registerdev;
1292 }
1293
1294 if (register_netdev(dev)) {
1295 lbs_pr_err("cannot register ethX device\n");
1296 goto err_init_fw;
1297 }
1298
1299 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1300
1301 libertas_debugfs_init_one(priv, dev);
1302
1303 ret = 0;
1304 goto done;
1305
1306 err_init_fw:
1307 priv->hw_unregister_dev(priv);
1308 err_registerdev:
1309 destroy_workqueue(priv->work_thread);
1310 /* Stop the thread servicing the interrupts */
1311 wake_up_interruptible(&priv->waitq);
1312 kthread_stop(priv->main_thread);
1313 done:
1314 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
1315 return ret;
1316 }
1317 EXPORT_SYMBOL_GPL(libertas_activate_card);
1318
1319
1320 /**
1321 * @brief This function adds mshX interface
1322 *
1323 * @param priv A pointer to the wlan_private structure
1324 * @return 0 if successful, -X otherwise
1325 */
1326 int libertas_add_mesh(wlan_private *priv, struct device *dev)
1327 {
1328 struct net_device *mesh_dev = NULL;
1329 int ret = 0;
1330
1331 lbs_deb_enter(LBS_DEB_MESH);
1332
1333 /* Allocate a virtual mesh device */
1334 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1335 lbs_deb_mesh("init mshX device failed\n");
1336 ret = -ENOMEM;
1337 goto done;
1338 }
1339 mesh_dev->priv = priv;
1340 priv->mesh_dev = mesh_dev;
1341
1342 SET_MODULE_OWNER(mesh_dev);
1343
1344 mesh_dev->open = libertas_mesh_open;
1345 mesh_dev->hard_start_xmit = libertas_mesh_pre_start_xmit;
1346 mesh_dev->stop = libertas_mesh_close;
1347 mesh_dev->get_stats = libertas_get_stats;
1348 mesh_dev->set_mac_address = libertas_set_mac_address;
1349 mesh_dev->ethtool_ops = &libertas_ethtool_ops;
1350 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1351 sizeof(priv->dev->dev_addr));
1352
1353 SET_NETDEV_DEV(priv->mesh_dev, dev);
1354
1355 #ifdef WIRELESS_EXT
1356 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1357 #endif
1358 #define NETIF_F_DYNALLOC 16
1359
1360 /* Register virtual mesh interface */
1361 ret = register_netdev(mesh_dev);
1362 if (ret) {
1363 lbs_pr_err("cannot register mshX virtual interface\n");
1364 goto err_free;
1365 }
1366
1367 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1368 if (ret)
1369 goto err_unregister;
1370
1371 /* Everything successful */
1372 ret = 0;
1373 goto done;
1374
1375 err_unregister:
1376 unregister_netdev(mesh_dev);
1377
1378 err_free:
1379 free_netdev(mesh_dev);
1380
1381 done:
1382 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1383 return ret;
1384 }
1385 EXPORT_SYMBOL_GPL(libertas_add_mesh);
1386
1387 static void wake_pending_cmdnodes(wlan_private *priv)
1388 {
1389 struct cmd_ctrl_node *cmdnode;
1390 unsigned long flags;
1391
1392 lbs_deb_enter(LBS_DEB_HOST);
1393
1394 spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1395 list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1396 cmdnode->cmdwaitqwoken = 1;
1397 wake_up_interruptible(&cmdnode->cmdwait_q);
1398 }
1399 spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1400 }
1401
1402
1403 int libertas_remove_card(wlan_private *priv)
1404 {
1405 wlan_adapter *adapter;
1406 struct net_device *dev;
1407 union iwreq_data wrqu;
1408
1409 lbs_deb_enter(LBS_DEB_NET);
1410
1411 libertas_remove_rtap(priv);
1412 if (!priv)
1413 goto out;
1414
1415 adapter = priv->adapter;
1416
1417 if (!adapter)
1418 goto out;
1419
1420 dev = priv->dev;
1421 device_remove_file(priv->hotplug_device, &dev_attr_libertas_rtap);
1422
1423 netif_stop_queue(priv->dev);
1424 netif_carrier_off(priv->dev);
1425
1426 wake_pending_cmdnodes(priv);
1427
1428 unregister_netdev(dev);
1429
1430 cancel_delayed_work(&priv->scan_work);
1431 cancel_delayed_work(&priv->assoc_work);
1432 destroy_workqueue(priv->work_thread);
1433
1434 if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
1435 adapter->psmode = WLAN802_11POWERMODECAM;
1436 libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1437 }
1438
1439 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1440 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1441 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1442
1443 adapter->surpriseremoved = 1;
1444
1445 /* Stop the thread servicing the interrupts */
1446 kthread_stop(priv->main_thread);
1447
1448 libertas_debugfs_remove_one(priv);
1449
1450 lbs_deb_net("free adapter\n");
1451 libertas_free_adapter(priv);
1452
1453 lbs_deb_net("unregister finish\n");
1454
1455 priv->dev = NULL;
1456 free_netdev(dev);
1457
1458 out:
1459 lbs_deb_leave(LBS_DEB_NET);
1460 return 0;
1461 }
1462 EXPORT_SYMBOL_GPL(libertas_remove_card);
1463
1464
1465 void libertas_remove_mesh(wlan_private *priv)
1466 {
1467 struct net_device *mesh_dev;
1468
1469 lbs_deb_enter(LBS_DEB_NET);
1470
1471 if (!priv)
1472 goto out;
1473
1474 mesh_dev = priv->mesh_dev;
1475
1476 netif_stop_queue(mesh_dev);
1477 netif_carrier_off(priv->mesh_dev);
1478
1479 sysfs_remove_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group);
1480 unregister_netdev(mesh_dev);
1481
1482 priv->mesh_dev = NULL ;
1483 free_netdev(mesh_dev);
1484
1485 out:
1486 lbs_deb_leave(LBS_DEB_NET);
1487 }
1488 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1489
1490 /**
1491 * @brief This function finds the CFP in
1492 * region_cfp_table based on region and band parameter.
1493 *
1494 * @param region The region code
1495 * @param band The band
1496 * @param cfp_no A pointer to CFP number
1497 * @return A pointer to CFP
1498 */
1499 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1500 {
1501 int i, end;
1502
1503 lbs_deb_enter(LBS_DEB_MAIN);
1504
1505 end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1506
1507 for (i = 0; i < end ; i++) {
1508 lbs_deb_main("region_cfp_table[i].region=%d\n",
1509 region_cfp_table[i].region);
1510 if (region_cfp_table[i].region == region) {
1511 *cfp_no = region_cfp_table[i].cfp_no_BG;
1512 lbs_deb_leave(LBS_DEB_MAIN);
1513 return region_cfp_table[i].cfp_BG;
1514 }
1515 }
1516
1517 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1518 return NULL;
1519 }
1520
1521 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1522 {
1523 wlan_adapter *adapter = priv->adapter;
1524 int ret = 0;
1525 int i = 0;
1526
1527 struct chan_freq_power *cfp;
1528 int cfp_no;
1529
1530 lbs_deb_enter(LBS_DEB_MAIN);
1531
1532 memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1533
1534 {
1535 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1536 if (cfp != NULL) {
1537 adapter->region_channel[i].nrcfp = cfp_no;
1538 adapter->region_channel[i].CFP = cfp;
1539 } else {
1540 lbs_deb_main("wrong region code %#x in band B/G\n",
1541 region);
1542 ret = -1;
1543 goto out;
1544 }
1545 adapter->region_channel[i].valid = 1;
1546 adapter->region_channel[i].region = region;
1547 adapter->region_channel[i].band = band;
1548 i++;
1549 }
1550 out:
1551 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1552 return ret;
1553 }
1554
1555 /**
1556 * @brief This function handles the interrupt. it will change PS
1557 * state if applicable. it will wake up main_thread to handle
1558 * the interrupt event as well.
1559 *
1560 * @param dev A pointer to net_device structure
1561 * @return n/a
1562 */
1563 void libertas_interrupt(struct net_device *dev)
1564 {
1565 wlan_private *priv = dev->priv;
1566
1567 lbs_deb_enter(LBS_DEB_THREAD);
1568
1569 lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1570 priv->adapter->intcounter);
1571
1572 priv->adapter->intcounter++;
1573
1574 if (priv->adapter->psstate == PS_STATE_SLEEP) {
1575 priv->adapter->psstate = PS_STATE_AWAKE;
1576 netif_wake_queue(dev);
1577 if (priv->mesh_dev)
1578 netif_wake_queue(priv->mesh_dev);
1579 }
1580
1581 wake_up_interruptible(&priv->waitq);
1582
1583 lbs_deb_leave(LBS_DEB_THREAD);
1584 }
1585 EXPORT_SYMBOL_GPL(libertas_interrupt);
1586
1587 int libertas_reset_device(wlan_private *priv)
1588 {
1589 int ret;
1590
1591 lbs_deb_enter(LBS_DEB_MAIN);
1592 ret = libertas_prepare_and_send_command(priv, CMD_802_11_RESET,
1593 CMD_ACT_HALT, 0, 0, NULL);
1594 msleep_interruptible(10);
1595
1596 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1597 return ret;
1598 }
1599 EXPORT_SYMBOL_GPL(libertas_reset_device);
1600
1601 static int libertas_init_module(void)
1602 {
1603 lbs_deb_enter(LBS_DEB_MAIN);
1604 libertas_debugfs_init();
1605 lbs_deb_leave(LBS_DEB_MAIN);
1606 return 0;
1607 }
1608
1609 static void libertas_exit_module(void)
1610 {
1611 lbs_deb_enter(LBS_DEB_MAIN);
1612
1613 libertas_debugfs_remove();
1614
1615 lbs_deb_leave(LBS_DEB_MAIN);
1616 }
1617
1618 /*
1619 * rtap interface support fuctions
1620 */
1621
1622 static int libertas_rtap_open(struct net_device *dev)
1623 {
1624 netif_carrier_off(dev);
1625 netif_stop_queue(dev);
1626 return 0;
1627 }
1628
1629 static int libertas_rtap_stop(struct net_device *dev)
1630 {
1631 return 0;
1632 }
1633
1634 static int libertas_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1635 {
1636 netif_stop_queue(dev);
1637 return -EOPNOTSUPP;
1638 }
1639
1640 static struct net_device_stats *libertas_rtap_get_stats(struct net_device *dev)
1641 {
1642 wlan_private *priv = dev->priv;
1643 return &priv->ieee->stats;
1644 }
1645
1646
1647 void libertas_remove_rtap(wlan_private *priv)
1648 {
1649 if (priv->rtap_net_dev == NULL)
1650 return;
1651 unregister_netdev(priv->rtap_net_dev);
1652 free_ieee80211(priv->rtap_net_dev);
1653 priv->rtap_net_dev = NULL;
1654 }
1655
1656 int libertas_add_rtap(wlan_private *priv)
1657 {
1658 int rc = 0;
1659
1660 if (priv->rtap_net_dev)
1661 return -EPERM;
1662
1663 priv->rtap_net_dev = alloc_ieee80211(0);
1664 if (priv->rtap_net_dev == NULL)
1665 return -ENOMEM;
1666
1667
1668 priv->ieee = netdev_priv(priv->rtap_net_dev);
1669
1670 strcpy(priv->rtap_net_dev->name, "rtap%d");
1671
1672 priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1673 priv->rtap_net_dev->open = libertas_rtap_open;
1674 priv->rtap_net_dev->stop = libertas_rtap_stop;
1675 priv->rtap_net_dev->get_stats = libertas_rtap_get_stats;
1676 priv->rtap_net_dev->hard_start_xmit = libertas_rtap_hard_start_xmit;
1677 priv->rtap_net_dev->set_multicast_list = libertas_set_multicast_list;
1678 priv->rtap_net_dev->priv = priv;
1679
1680 priv->ieee->iw_mode = IW_MODE_MONITOR;
1681
1682 rc = register_netdev(priv->rtap_net_dev);
1683 if (rc) {
1684 free_ieee80211(priv->rtap_net_dev);
1685 priv->rtap_net_dev = NULL;
1686 return rc;
1687 }
1688
1689 return 0;
1690 }
1691
1692
1693 module_init(libertas_init_module);
1694 module_exit(libertas_exit_module);
1695
1696 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1697 MODULE_AUTHOR("Marvell International Ltd.");
1698 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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