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[openwrt.git] / package / libertas / src / 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 #ifdef CONFIG_OLPC
15 #include <asm/olpc.h>
16 #endif
17
18 #include <net/iw_handler.h>
19 #include <net/ieee80211.h>
20
21 #include "host.h"
22 #include "decl.h"
23 #include "dev.h"
24 #include "wext.h"
25 #include "debugfs.h"
26 #include "scan.h"
27 #include "assoc.h"
28 #include "cmd.h"
29 #include "ioctl.h"
30
31 #define DRIVER_RELEASE_VERSION "323.p0"
32 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
33 #ifdef DEBUG
34 "-dbg"
35 #endif
36 "";
37
38
39 /* Module parameters */
40 unsigned int lbs_debug;
41 EXPORT_SYMBOL_GPL(lbs_debug);
42 module_param_named(libertas_debug, lbs_debug, int, 0644);
43
44
45 /* This global structure is used to send the confirm_sleep command as
46 * fast as possible down to the firmware. */
47 struct cmd_confirm_sleep confirm_sleep;
48
49
50 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
51 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
52 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
53 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
54 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
55
56 /* Format { channel, frequency (MHz), maxtxpower } */
57 /* band: 'B/G', region: USA FCC/Canada IC */
58 static struct chan_freq_power channel_freq_power_US_BG[] = {
59 {1, 2412, LBS_TX_PWR_US_DEFAULT},
60 {2, 2417, LBS_TX_PWR_US_DEFAULT},
61 {3, 2422, LBS_TX_PWR_US_DEFAULT},
62 {4, 2427, LBS_TX_PWR_US_DEFAULT},
63 {5, 2432, LBS_TX_PWR_US_DEFAULT},
64 {6, 2437, LBS_TX_PWR_US_DEFAULT},
65 {7, 2442, LBS_TX_PWR_US_DEFAULT},
66 {8, 2447, LBS_TX_PWR_US_DEFAULT},
67 {9, 2452, LBS_TX_PWR_US_DEFAULT},
68 {10, 2457, LBS_TX_PWR_US_DEFAULT},
69 {11, 2462, LBS_TX_PWR_US_DEFAULT}
70 };
71
72 /* band: 'B/G', region: Europe ETSI */
73 static struct chan_freq_power channel_freq_power_EU_BG[] = {
74 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
75 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
76 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
77 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
78 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
79 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
80 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
81 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
82 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
83 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
84 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
85 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
86 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
87 };
88
89 /* band: 'B/G', region: Spain */
90 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
91 {10, 2457, LBS_TX_PWR_DEFAULT},
92 {11, 2462, LBS_TX_PWR_DEFAULT}
93 };
94
95 /* band: 'B/G', region: France */
96 static struct chan_freq_power channel_freq_power_FR_BG[] = {
97 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
98 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
99 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
100 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
101 };
102
103 /* band: 'B/G', region: Japan */
104 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
105 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
106 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
107 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
108 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
109 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
110 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
111 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
112 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
113 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
114 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
115 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
116 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
117 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
118 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
119 };
120
121 /**
122 * the structure for channel, frequency and power
123 */
124 struct region_cfp_table {
125 u8 region;
126 struct chan_freq_power *cfp_BG;
127 int cfp_no_BG;
128 };
129
130 /**
131 * the structure for the mapping between region and CFP
132 */
133 static struct region_cfp_table region_cfp_table[] = {
134 {0x10, /*US FCC */
135 channel_freq_power_US_BG,
136 ARRAY_SIZE(channel_freq_power_US_BG),
137 }
138 ,
139 {0x20, /*CANADA IC */
140 channel_freq_power_US_BG,
141 ARRAY_SIZE(channel_freq_power_US_BG),
142 }
143 ,
144 {0x30, /*EU*/ channel_freq_power_EU_BG,
145 ARRAY_SIZE(channel_freq_power_EU_BG),
146 }
147 ,
148 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
149 ARRAY_SIZE(channel_freq_power_SPN_BG),
150 }
151 ,
152 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
153 ARRAY_SIZE(channel_freq_power_FR_BG),
154 }
155 ,
156 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
157 ARRAY_SIZE(channel_freq_power_JPN_BG),
158 }
159 ,
160 /*Add new region here */
161 };
162
163 /**
164 * the table to keep region code
165 */
166 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
167 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
168
169 /**
170 * 802.11b/g supported bitrates (in 500Kb/s units)
171 */
172 u8 lbs_bg_rates[MAX_RATES] =
173 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
174 0x00, 0x00 };
175
176 /**
177 * FW rate table. FW refers to rates by their index in this table, not by the
178 * rate value itself. Values of 0x00 are
179 * reserved positions.
180 */
181 static u8 fw_data_rates[MAX_RATES] =
182 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
183 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
184 };
185
186 /**
187 * @brief use index to get the data rate
188 *
189 * @param idx The index of data rate
190 * @return data rate or 0
191 */
192 u32 lbs_fw_index_to_data_rate(u8 idx)
193 {
194 if (idx >= sizeof(fw_data_rates))
195 idx = 0;
196 return fw_data_rates[idx];
197 }
198
199 /**
200 * @brief use rate to get the index
201 *
202 * @param rate data rate
203 * @return index or 0
204 */
205 u8 lbs_data_rate_to_fw_index(u32 rate)
206 {
207 u8 i;
208
209 if (!rate)
210 return 0;
211
212 for (i = 0; i < sizeof(fw_data_rates); i++) {
213 if (rate == fw_data_rates[i])
214 return i;
215 }
216 return 0;
217 }
218
219 /**
220 * Attributes exported through sysfs
221 */
222
223 /**
224 * @brief Get function for sysfs attribute anycast_mask
225 */
226 static ssize_t lbs_anycast_get(struct device *dev,
227 struct device_attribute *attr, char * buf)
228 {
229 struct lbs_private *priv = to_net_dev(dev)->priv;
230 struct cmd_ds_mesh_access mesh_access;
231 int ret;
232
233 memset(&mesh_access, 0, sizeof(mesh_access));
234
235 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
236 if (ret)
237 return ret;
238
239 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
240 }
241
242 /**
243 * @brief Set function for sysfs attribute anycast_mask
244 */
245 static ssize_t lbs_anycast_set(struct device *dev,
246 struct device_attribute *attr, const char * buf, size_t count)
247 {
248 struct lbs_private *priv = to_net_dev(dev)->priv;
249 struct cmd_ds_mesh_access mesh_access;
250 uint32_t datum;
251 int ret;
252
253 memset(&mesh_access, 0, sizeof(mesh_access));
254 sscanf(buf, "%x", &datum);
255 mesh_access.data[0] = cpu_to_le32(datum);
256
257 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
258 if (ret)
259 return ret;
260
261 return strlen(buf);
262 }
263
264 static int lbs_add_rtap(struct lbs_private *priv);
265 static void lbs_remove_rtap(struct lbs_private *priv);
266 static int lbs_add_mesh(struct lbs_private *priv);
267 static void lbs_remove_mesh(struct lbs_private *priv);
268
269
270 /**
271 * Get function for sysfs attribute rtap
272 */
273 static ssize_t lbs_rtap_get(struct device *dev,
274 struct device_attribute *attr, char * buf)
275 {
276 struct lbs_private *priv = to_net_dev(dev)->priv;
277 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
278 }
279
280 /**
281 * Set function for sysfs attribute rtap
282 */
283 static ssize_t lbs_rtap_set(struct device *dev,
284 struct device_attribute *attr, const char * buf, size_t count)
285 {
286 int monitor_mode;
287 struct lbs_private *priv = to_net_dev(dev)->priv;
288
289 sscanf(buf, "%x", &monitor_mode);
290 if (monitor_mode) {
291 if (priv->monitormode == monitor_mode)
292 return strlen(buf);
293 if (!priv->monitormode) {
294 if (priv->infra_open || priv->mesh_open)
295 return -EBUSY;
296 if (priv->mode == IW_MODE_INFRA)
297 lbs_send_deauthentication(priv);
298 else if (priv->mode == IW_MODE_ADHOC)
299 lbs_stop_adhoc_network(priv);
300 lbs_add_rtap(priv);
301 }
302 priv->monitormode = monitor_mode;
303 }
304
305 else {
306 if (!priv->monitormode)
307 return strlen(buf);
308 priv->monitormode = 0;
309 lbs_remove_rtap(priv);
310
311 if (priv->currenttxskb) {
312 dev_kfree_skb_any(priv->currenttxskb);
313 priv->currenttxskb = NULL;
314 }
315
316 /* Wake queues, command thread, etc. */
317 lbs_host_to_card_done(priv);
318 }
319
320 lbs_prepare_and_send_command(priv,
321 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
322 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
323 return strlen(buf);
324 }
325
326 /**
327 * lbs_rtap attribute to be exported per ethX interface
328 * through sysfs (/sys/class/net/ethX/lbs_rtap)
329 */
330 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
331
332 /**
333 * Get function for sysfs attribute mesh
334 */
335 static ssize_t lbs_mesh_get(struct device *dev,
336 struct device_attribute *attr, char * buf)
337 {
338 struct lbs_private *priv = to_net_dev(dev)->priv;
339 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
340 }
341
342 /**
343 * Set function for sysfs attribute mesh
344 */
345 static ssize_t lbs_mesh_set(struct device *dev,
346 struct device_attribute *attr, const char * buf, size_t count)
347 {
348 struct lbs_private *priv = to_net_dev(dev)->priv;
349 int enable;
350 int ret;
351
352 sscanf(buf, "%x", &enable);
353 enable = !!enable;
354 if (enable == !!priv->mesh_dev)
355 return count;
356
357 ret = lbs_mesh_config(priv, enable, priv->curbssparams.channel);
358 if (ret)
359 return ret;
360
361 if (enable)
362 lbs_add_mesh(priv);
363 else
364 lbs_remove_mesh(priv);
365
366 return count;
367 }
368
369 /**
370 * lbs_mesh attribute to be exported per ethX interface
371 * through sysfs (/sys/class/net/ethX/lbs_mesh)
372 */
373 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
374
375 /**
376 * anycast_mask attribute to be exported per mshX interface
377 * through sysfs (/sys/class/net/mshX/anycast_mask)
378 */
379 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
380
381 static struct attribute *lbs_mesh_sysfs_entries[] = {
382 &dev_attr_anycast_mask.attr,
383 NULL,
384 };
385
386 static struct attribute_group lbs_mesh_attr_group = {
387 .attrs = lbs_mesh_sysfs_entries,
388 };
389
390 /**
391 * @brief This function opens the ethX or mshX interface
392 *
393 * @param dev A pointer to net_device structure
394 * @return 0 or -EBUSY if monitor mode active
395 */
396 static int lbs_dev_open(struct net_device *dev)
397 {
398 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
399 int ret = 0;
400
401 lbs_deb_enter(LBS_DEB_NET);
402
403 spin_lock_irq(&priv->driver_lock);
404
405 if (priv->monitormode) {
406 ret = -EBUSY;
407 goto out;
408 }
409
410 if (dev == priv->mesh_dev) {
411 priv->mesh_open = 1;
412 priv->mesh_connect_status = LBS_CONNECTED;
413 netif_carrier_on(dev);
414 } else {
415 priv->infra_open = 1;
416
417 if (priv->connect_status == LBS_CONNECTED)
418 netif_carrier_on(dev);
419 else
420 netif_carrier_off(dev);
421 }
422
423 if (!priv->tx_pending_len)
424 netif_wake_queue(dev);
425 out:
426
427 spin_unlock_irq(&priv->driver_lock);
428 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
429 return ret;
430 }
431
432 /**
433 * @brief This function closes the mshX interface
434 *
435 * @param dev A pointer to net_device structure
436 * @return 0
437 */
438 static int lbs_mesh_stop(struct net_device *dev)
439 {
440 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
441
442 lbs_deb_enter(LBS_DEB_MESH);
443 spin_lock_irq(&priv->driver_lock);
444
445 priv->mesh_open = 0;
446 priv->mesh_connect_status = LBS_DISCONNECTED;
447
448 netif_stop_queue(dev);
449 netif_carrier_off(dev);
450
451 spin_unlock_irq(&priv->driver_lock);
452
453 lbs_deb_leave(LBS_DEB_MESH);
454 return 0;
455 }
456
457 /**
458 * @brief This function closes the ethX interface
459 *
460 * @param dev A pointer to net_device structure
461 * @return 0
462 */
463 static int lbs_eth_stop(struct net_device *dev)
464 {
465 struct lbs_private *priv = (struct lbs_private *) dev->priv;
466
467 lbs_deb_enter(LBS_DEB_NET);
468
469 spin_lock_irq(&priv->driver_lock);
470 priv->infra_open = 0;
471 netif_stop_queue(dev);
472 spin_unlock_irq(&priv->driver_lock);
473
474 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 static int lbs_copy_multicast_address(struct lbs_private *priv,
571 struct net_device *dev)
572 {
573 int i = 0;
574 struct dev_mc_list *mcptr = dev->mc_list;
575
576 for (i = 0; i < dev->mc_count; i++) {
577 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
578 mcptr = mcptr->next;
579 }
580 return i;
581 }
582
583 static void lbs_set_multicast_list(struct net_device *dev)
584 {
585 struct lbs_private *priv = dev->priv;
586 int old_mac_control;
587 DECLARE_MAC_BUF(mac);
588
589 lbs_deb_enter(LBS_DEB_NET);
590
591 old_mac_control = priv->mac_control;
592
593 if (dev->flags & IFF_PROMISC) {
594 lbs_deb_net("enable promiscuous mode\n");
595 priv->mac_control |=
596 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
597 priv->mac_control &=
598 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
599 CMD_ACT_MAC_MULTICAST_ENABLE);
600 } else {
601 /* Multicast */
602 priv->mac_control &=
603 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
604
605 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
606 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
607 lbs_deb_net( "enabling all multicast\n");
608 priv->mac_control |=
609 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
610 priv->mac_control &=
611 ~CMD_ACT_MAC_MULTICAST_ENABLE;
612 } else {
613 priv->mac_control &=
614 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
615
616 if (!dev->mc_count) {
617 lbs_deb_net("no multicast addresses, "
618 "disabling multicast\n");
619 priv->mac_control &=
620 ~CMD_ACT_MAC_MULTICAST_ENABLE;
621 } else {
622 int i;
623
624 priv->mac_control |=
625 CMD_ACT_MAC_MULTICAST_ENABLE;
626
627 priv->nr_of_multicastmacaddr =
628 lbs_copy_multicast_address(priv, dev);
629
630 lbs_deb_net("multicast addresses: %d\n",
631 dev->mc_count);
632
633 for (i = 0; i < dev->mc_count; i++) {
634 lbs_deb_net("Multicast address %d: %s\n",
635 i, print_mac(mac,
636 priv->multicastlist[i]));
637 }
638 /* send multicast addresses to firmware */
639 lbs_prepare_and_send_command(priv,
640 CMD_MAC_MULTICAST_ADR,
641 CMD_ACT_SET, 0, 0,
642 NULL);
643 }
644 }
645 }
646
647 if (priv->mac_control != old_mac_control)
648 lbs_set_mac_control(priv);
649
650 lbs_deb_leave(LBS_DEB_NET);
651 }
652
653 /**
654 * @brief This function handles the major jobs in the LBS driver.
655 * It handles all events generated by firmware, RX data received
656 * from firmware and TX data sent from kernel.
657 *
658 * @param data A pointer to lbs_thread structure
659 * @return 0
660 */
661 static int lbs_thread(void *data)
662 {
663 struct net_device *dev = data;
664 struct lbs_private *priv = dev->priv;
665 wait_queue_t wait;
666
667 lbs_deb_enter(LBS_DEB_THREAD);
668
669 init_waitqueue_entry(&wait, current);
670
671 for (;;) {
672 int shouldsleep;
673 u8 resp_idx;
674
675 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
676 priv->currenttxskb, priv->dnld_sent);
677
678 add_wait_queue(&priv->waitq, &wait);
679 set_current_state(TASK_INTERRUPTIBLE);
680 spin_lock_irq(&priv->driver_lock);
681
682 if (kthread_should_stop())
683 shouldsleep = 0; /* Bye */
684 else if (priv->surpriseremoved)
685 shouldsleep = 1; /* We need to wait until we're _told_ to die */
686 else if (priv->psstate == PS_STATE_SLEEP)
687 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
688 else if (priv->cmd_timed_out)
689 shouldsleep = 0; /* Command timed out. Recover */
690 else if (!priv->fw_ready)
691 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
692 else if (priv->dnld_sent)
693 shouldsleep = 1; /* Something is en route to the device already */
694 else if (priv->tx_pending_len > 0)
695 shouldsleep = 0; /* We've a packet to send */
696 else if (priv->cur_cmd)
697 shouldsleep = 1; /* Can't send a command; one already running */
698 else if (!list_empty(&priv->cmdpendingq))
699 shouldsleep = 0; /* We have a command to send */
700 else if (__kfifo_len(priv->event_fifo))
701 shouldsleep = 0; /* We have an event to process */
702 else if (priv->resp_len[priv->resp_idx])
703 shouldsleep = 0; /* We have a command response */
704 else
705 shouldsleep = 1; /* No command */
706
707 if (shouldsleep) {
708 lbs_deb_thread("sleeping, connect_status %d, "
709 "ps_mode %d, ps_state %d\n",
710 priv->connect_status,
711 priv->psmode, priv->psstate);
712 spin_unlock_irq(&priv->driver_lock);
713 schedule();
714 } else
715 spin_unlock_irq(&priv->driver_lock);
716
717 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
718 priv->currenttxskb, priv->dnld_sent);
719
720 set_current_state(TASK_RUNNING);
721 remove_wait_queue(&priv->waitq, &wait);
722
723 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
724 priv->currenttxskb, priv->dnld_sent);
725
726 if (kthread_should_stop()) {
727 lbs_deb_thread("break from main thread\n");
728 break;
729 }
730
731 if (priv->surpriseremoved) {
732 lbs_deb_thread("adapter removed; waiting to die...\n");
733 continue;
734 }
735
736 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
737 priv->currenttxskb, priv->dnld_sent);
738
739 /* Process any pending command response */
740 spin_lock_irq(&priv->driver_lock);
741 resp_idx = priv->resp_idx;
742 if (priv->resp_len[resp_idx]) {
743 spin_unlock_irq(&priv->driver_lock);
744 lbs_process_command_response(priv,
745 priv->resp_buf[resp_idx],
746 priv->resp_len[resp_idx]);
747 spin_lock_irq(&priv->driver_lock);
748 priv->resp_len[resp_idx] = 0;
749 }
750 spin_unlock_irq(&priv->driver_lock);
751
752 /* command timeout stuff */
753 if (priv->cmd_timed_out && priv->cur_cmd) {
754 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
755
756 if (++priv->nr_retries > 10) {
757 lbs_pr_info("Excessive timeouts submitting command %x\n",
758 le16_to_cpu(cmdnode->cmdbuf->command));
759 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
760 priv->nr_retries = 0;
761 #ifdef CONFIG_OLPC
762 if (machine_is_olpc()) {
763 spin_unlock_irq(&priv->driver_lock);
764 printk(KERN_CRIT "Resetting OLPC wireless via EC...\n");
765 olpc_ec_cmd(0x25, NULL, 0, NULL, 0);
766 spin_lock_irq(&priv->driver_lock);
767 }
768 #endif
769 } else {
770 priv->cur_cmd = NULL;
771 priv->dnld_sent = DNLD_RES_RECEIVED;
772 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
773 le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
774
775 /* Stick it back at the _top_ of the pending queue
776 for immediate resubmission */
777 list_add(&cmdnode->list, &priv->cmdpendingq);
778 }
779 }
780 priv->cmd_timed_out = 0;
781
782 /* Process hardware events, e.g. card removed, link lost */
783 spin_lock_irq(&priv->driver_lock);
784 while (__kfifo_len(priv->event_fifo)) {
785 u32 event;
786
787 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
788 sizeof(event));
789 spin_unlock_irq(&priv->driver_lock);
790 lbs_process_event(priv, event);
791 spin_lock_irq(&priv->driver_lock);
792 }
793 spin_unlock_irq(&priv->driver_lock);
794
795 if (!priv->fw_ready)
796 continue;
797
798 /* Check if we need to confirm Sleep Request received previously */
799 if (priv->psstate == PS_STATE_PRE_SLEEP &&
800 !priv->dnld_sent && !priv->cur_cmd) {
801 if (priv->connect_status == LBS_CONNECTED) {
802 lbs_deb_thread("pre-sleep, currenttxskb %p, "
803 "dnld_sent %d, cur_cmd %p\n",
804 priv->currenttxskb, priv->dnld_sent,
805 priv->cur_cmd);
806
807 lbs_ps_confirm_sleep(priv);
808 } else {
809 /* workaround for firmware sending
810 * deauth/linkloss event immediately
811 * after sleep request; remove this
812 * after firmware fixes it
813 */
814 priv->psstate = PS_STATE_AWAKE;
815 lbs_pr_alert("ignore PS_SleepConfirm in "
816 "non-connected state\n");
817 }
818 }
819
820 /* The PS state is changed during processing of Sleep Request
821 * event above
822 */
823 if ((priv->psstate == PS_STATE_SLEEP) ||
824 (priv->psstate == PS_STATE_PRE_SLEEP))
825 continue;
826
827 /* Execute the next command */
828 if (!priv->dnld_sent && !priv->cur_cmd)
829 lbs_execute_next_command(priv);
830
831 /* Wake-up command waiters which can't sleep in
832 * lbs_prepare_and_send_command
833 */
834 if (!list_empty(&priv->cmdpendingq))
835 wake_up_all(&priv->cmd_pending);
836
837 spin_lock_irq(&priv->driver_lock);
838 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
839 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
840 priv->tx_pending_buf,
841 priv->tx_pending_len);
842 if (ret) {
843 lbs_deb_tx("host_to_card failed %d\n", ret);
844 priv->dnld_sent = DNLD_RES_RECEIVED;
845 }
846 priv->tx_pending_len = 0;
847 if (!priv->currenttxskb) {
848 /* We can wake the queues immediately if we aren't
849 waiting for TX feedback */
850 if (priv->connect_status == LBS_CONNECTED)
851 netif_wake_queue(priv->dev);
852 if (priv->mesh_dev &&
853 priv->mesh_connect_status == LBS_CONNECTED)
854 netif_wake_queue(priv->mesh_dev);
855 }
856 }
857 spin_unlock_irq(&priv->driver_lock);
858 }
859
860 del_timer(&priv->command_timer);
861 wake_up_all(&priv->cmd_pending);
862
863 lbs_deb_leave(LBS_DEB_THREAD);
864 return 0;
865 }
866
867 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
868 struct cmd_header *cmd)
869 {
870 lbs_deb_enter(LBS_DEB_FW);
871
872 netif_device_detach(priv->dev);
873 if (priv->mesh_dev)
874 netif_device_detach(priv->mesh_dev);
875
876 priv->fw_ready = 0;
877 lbs_deb_leave(LBS_DEB_FW);
878 return 0;
879 }
880
881 int lbs_suspend(struct lbs_private *priv)
882 {
883 struct cmd_header cmd;
884 int ret;
885
886 lbs_deb_enter(LBS_DEB_FW);
887
888 if (priv->wol_criteria == 0xffffffff) {
889 lbs_pr_info("Suspend attempt without configuring wake params!\n");
890 return -EINVAL;
891 }
892
893 memset(&cmd, 0, sizeof(cmd));
894
895 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
896 sizeof(cmd), lbs_suspend_callback, 0);
897 if (ret)
898 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
899
900 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
901 return ret;
902 }
903 EXPORT_SYMBOL_GPL(lbs_suspend);
904
905 int lbs_resume(struct lbs_private *priv)
906 {
907 lbs_deb_enter(LBS_DEB_FW);
908
909 priv->fw_ready = 1;
910
911 /* Firmware doesn't seem to give us RX packets any more
912 until we send it some command. Might as well update */
913 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
914 0, 0, NULL);
915
916 netif_device_attach(priv->dev);
917 if (priv->mesh_dev)
918 netif_device_attach(priv->mesh_dev);
919
920 lbs_deb_leave(LBS_DEB_FW);
921 return 0;
922 }
923 EXPORT_SYMBOL_GPL(lbs_resume);
924
925 /**
926 * @brief This function downloads firmware image, gets
927 * HW spec from firmware and set basic parameters to
928 * firmware.
929 *
930 * @param priv A pointer to struct lbs_private structure
931 * @return 0 or -1
932 */
933 static int lbs_setup_firmware(struct lbs_private *priv)
934 {
935 int ret = -1;
936
937 lbs_deb_enter(LBS_DEB_FW);
938
939 /*
940 * Read MAC address from HW
941 */
942 memset(priv->current_addr, 0xff, ETH_ALEN);
943 ret = lbs_update_hw_spec(priv);
944 if (ret) {
945 ret = -1;
946 goto done;
947 }
948
949 lbs_set_mac_control(priv);
950
951 ret = lbs_get_data_rate(priv);
952 if (ret < 0) {
953 ret = -1;
954 goto done;
955 }
956
957 ret = 0;
958 done:
959 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
960 return ret;
961 }
962
963 /**
964 * This function handles the timeout of command sending.
965 * It will re-send the same command again.
966 */
967 static void command_timer_fn(unsigned long data)
968 {
969 struct lbs_private *priv = (struct lbs_private *)data;
970 unsigned long flags;
971
972 lbs_deb_enter(LBS_DEB_CMD);
973 spin_lock_irqsave(&priv->driver_lock, flags);
974
975 if (!priv->cur_cmd) {
976 lbs_pr_info("Command timer expired; no pending command\n");
977 goto out;
978 }
979
980 lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
981
982 priv->cmd_timed_out = 1;
983 wake_up_interruptible(&priv->waitq);
984 out:
985 spin_unlock_irqrestore(&priv->driver_lock, flags);
986 lbs_deb_leave(LBS_DEB_CMD);
987 }
988
989 static void lbs_sync_channel_worker(struct work_struct *work)
990 {
991 struct lbs_private *priv = container_of(work, struct lbs_private,
992 sync_channel);
993
994 lbs_deb_enter(LBS_DEB_MAIN);
995 if (lbs_update_channel(priv))
996 lbs_pr_info("Channel synchronization failed.");
997 lbs_deb_leave(LBS_DEB_MAIN);
998 }
999
1000
1001 static int lbs_init_adapter(struct lbs_private *priv)
1002 {
1003 size_t bufsize;
1004 int i, ret = 0;
1005
1006 lbs_deb_enter(LBS_DEB_MAIN);
1007
1008 /* Allocate buffer to store the BSSID list */
1009 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1010 priv->networks = kzalloc(bufsize, GFP_KERNEL);
1011 if (!priv->networks) {
1012 lbs_pr_err("Out of memory allocating beacons\n");
1013 ret = -1;
1014 goto out;
1015 }
1016
1017 /* Initialize scan result lists */
1018 INIT_LIST_HEAD(&priv->network_free_list);
1019 INIT_LIST_HEAD(&priv->network_list);
1020 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1021 list_add_tail(&priv->networks[i].list,
1022 &priv->network_free_list);
1023 }
1024
1025 memset(priv->current_addr, 0xff, ETH_ALEN);
1026
1027 priv->connect_status = LBS_DISCONNECTED;
1028 priv->mesh_connect_status = LBS_DISCONNECTED;
1029 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1030 priv->mode = IW_MODE_INFRA;
1031 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1032 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1033 priv->radioon = RADIO_ON;
1034 priv->auto_rate = 1;
1035 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1036 priv->psmode = LBS802_11POWERMODECAM;
1037 priv->psstate = PS_STATE_FULL_POWER;
1038
1039 mutex_init(&priv->lock);
1040
1041 setup_timer(&priv->command_timer, command_timer_fn,
1042 (unsigned long)priv);
1043
1044 INIT_LIST_HEAD(&priv->cmdfreeq);
1045 INIT_LIST_HEAD(&priv->cmdpendingq);
1046
1047 spin_lock_init(&priv->driver_lock);
1048 init_waitqueue_head(&priv->cmd_pending);
1049
1050 /* Allocate the command buffers */
1051 if (lbs_allocate_cmd_buffer(priv)) {
1052 lbs_pr_err("Out of memory allocating command buffers\n");
1053 ret = -ENOMEM;
1054 goto out;
1055 }
1056 priv->resp_idx = 0;
1057 priv->resp_len[0] = priv->resp_len[1] = 0;
1058
1059 /* Create the event FIFO */
1060 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1061 if (IS_ERR(priv->event_fifo)) {
1062 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1063 ret = -ENOMEM;
1064 goto out;
1065 }
1066
1067 out:
1068 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1069
1070 return ret;
1071 }
1072
1073 static void lbs_free_adapter(struct lbs_private *priv)
1074 {
1075 lbs_deb_enter(LBS_DEB_MAIN);
1076
1077 lbs_free_cmd_buffer(priv);
1078 if (priv->event_fifo)
1079 kfifo_free(priv->event_fifo);
1080 del_timer(&priv->command_timer);
1081 kfree(priv->networks);
1082 priv->networks = NULL;
1083
1084 lbs_deb_leave(LBS_DEB_MAIN);
1085 }
1086
1087 /**
1088 * @brief This function adds the card. it will probe the
1089 * card, allocate the lbs_priv and initialize the device.
1090 *
1091 * @param card A pointer to card
1092 * @return A pointer to struct lbs_private structure
1093 */
1094 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1095 {
1096 struct net_device *dev = NULL;
1097 struct lbs_private *priv = NULL;
1098
1099 lbs_deb_enter(LBS_DEB_MAIN);
1100
1101 /* Allocate an Ethernet device and register it */
1102 dev = alloc_etherdev(sizeof(struct lbs_private));
1103 if (!dev) {
1104 lbs_pr_err("init ethX device failed\n");
1105 goto done;
1106 }
1107 priv = dev->priv;
1108
1109 if (lbs_init_adapter(priv)) {
1110 lbs_pr_err("failed to initialize adapter structure.\n");
1111 goto err_init_adapter;
1112 }
1113
1114 priv->dev = dev;
1115 priv->card = card;
1116 priv->mesh_open = 0;
1117 priv->infra_open = 0;
1118
1119 /* Setup the OS Interface to our functions */
1120 dev->open = lbs_dev_open;
1121 dev->hard_start_xmit = lbs_hard_start_xmit;
1122 dev->stop = lbs_eth_stop;
1123 dev->set_mac_address = lbs_set_mac_address;
1124 dev->tx_timeout = lbs_tx_timeout;
1125 dev->do_ioctl = lbs_do_ioctl;
1126 dev->get_stats = lbs_get_stats;
1127 dev->watchdog_timeo = 5 * HZ;
1128 dev->ethtool_ops = &lbs_ethtool_ops;
1129 #ifdef WIRELESS_EXT
1130 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1131 #endif
1132 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1133 dev->set_multicast_list = lbs_set_multicast_list;
1134
1135 SET_NETDEV_DEV(dev, dmdev);
1136
1137 priv->rtap_net_dev = NULL;
1138
1139 lbs_deb_thread("Starting main thread...\n");
1140 init_waitqueue_head(&priv->waitq);
1141 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1142 if (IS_ERR(priv->main_thread)) {
1143 lbs_deb_thread("Error creating main thread.\n");
1144 goto err_init_adapter;
1145 }
1146
1147 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1148 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1149 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1150 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1151
1152 sprintf(priv->mesh_ssid, "mesh");
1153 priv->mesh_ssid_len = 4;
1154
1155 priv->wol_criteria = 0xffffffff;
1156 priv->wol_gpio = 0xff;
1157
1158 goto done;
1159
1160 err_init_adapter:
1161 lbs_free_adapter(priv);
1162 free_netdev(dev);
1163 priv = NULL;
1164
1165 done:
1166 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1167 return priv;
1168 }
1169 EXPORT_SYMBOL_GPL(lbs_add_card);
1170
1171
1172 int lbs_remove_card(struct lbs_private *priv)
1173 {
1174 struct net_device *dev = priv->dev;
1175 union iwreq_data wrqu;
1176
1177 lbs_deb_enter(LBS_DEB_MAIN);
1178
1179 lbs_remove_mesh(priv);
1180 lbs_remove_rtap(priv);
1181
1182 dev = priv->dev;
1183
1184 cancel_delayed_work(&priv->scan_work);
1185 cancel_delayed_work(&priv->assoc_work);
1186 destroy_workqueue(priv->work_thread);
1187
1188 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1189 priv->psmode = LBS802_11POWERMODECAM;
1190 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1191 }
1192
1193 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1194 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1195 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1196
1197 /* Stop the thread servicing the interrupts */
1198 priv->surpriseremoved = 1;
1199 kthread_stop(priv->main_thread);
1200
1201 lbs_free_adapter(priv);
1202
1203 priv->dev = NULL;
1204 free_netdev(dev);
1205
1206 lbs_deb_leave(LBS_DEB_MAIN);
1207 return 0;
1208 }
1209 EXPORT_SYMBOL_GPL(lbs_remove_card);
1210
1211
1212 int lbs_start_card(struct lbs_private *priv)
1213 {
1214 struct net_device *dev = priv->dev;
1215 int ret = -1;
1216
1217 lbs_deb_enter(LBS_DEB_MAIN);
1218
1219 /* poke the firmware */
1220 ret = lbs_setup_firmware(priv);
1221 if (ret)
1222 goto done;
1223
1224 /* init 802.11d */
1225 lbs_init_11d(priv);
1226
1227 if (register_netdev(dev)) {
1228 lbs_pr_err("cannot register ethX device\n");
1229 goto done;
1230 }
1231 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1232 lbs_pr_err("cannot register lbs_rtap attribute\n");
1233
1234 lbs_update_channel(priv);
1235
1236 /* 5.0.16p0 is known to NOT support any mesh */
1237 if (priv->fwrelease > 0x05001000) {
1238 /* Enable mesh, if supported, and work out which TLV it uses.
1239 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1240 0x100 + 37 is the official value used in 5.110.21.pXX
1241 but we check them in that order because 20.pXX doesn't
1242 give an error -- it just silently fails. */
1243
1244 /* 5.110.20.pXX firmware will fail the command if the channel
1245 doesn't match the existing channel. But only if the TLV
1246 is correct. If the channel is wrong, _BOTH_ versions will
1247 give an error to 0x100+291, and allow 0x100+37 to succeed.
1248 It's just that 5.110.20.pXX will not have done anything
1249 useful */
1250
1251 priv->mesh_tlv = 0x100 + 291;
1252 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1253 priv->mesh_tlv = 0x100 + 37;
1254 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1255 priv->mesh_tlv = 0;
1256 }
1257 if (priv->mesh_tlv) {
1258 lbs_add_mesh(priv);
1259
1260 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1261 lbs_pr_err("cannot register lbs_mesh attribute\n");
1262 }
1263 }
1264
1265 lbs_debugfs_init_one(priv, dev);
1266
1267 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1268
1269 ret = 0;
1270
1271 done:
1272 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1273 return ret;
1274 }
1275 EXPORT_SYMBOL_GPL(lbs_start_card);
1276
1277
1278 int lbs_stop_card(struct lbs_private *priv)
1279 {
1280 struct net_device *dev = priv->dev;
1281 int ret = -1;
1282 struct cmd_ctrl_node *cmdnode;
1283 unsigned long flags;
1284
1285 lbs_deb_enter(LBS_DEB_MAIN);
1286
1287 netif_stop_queue(priv->dev);
1288 netif_carrier_off(priv->dev);
1289
1290 lbs_debugfs_remove_one(priv);
1291 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1292 if (priv->mesh_tlv)
1293 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1294
1295 /* Flush pending command nodes */
1296 spin_lock_irqsave(&priv->driver_lock, flags);
1297 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1298 cmdnode->result = -ENOENT;
1299 cmdnode->cmdwaitqwoken = 1;
1300 wake_up_interruptible(&cmdnode->cmdwait_q);
1301 }
1302 spin_unlock_irqrestore(&priv->driver_lock, flags);
1303
1304 unregister_netdev(dev);
1305
1306 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1307 return ret;
1308 }
1309 EXPORT_SYMBOL_GPL(lbs_stop_card);
1310
1311
1312 /**
1313 * @brief This function adds mshX interface
1314 *
1315 * @param priv A pointer to the struct lbs_private structure
1316 * @return 0 if successful, -X otherwise
1317 */
1318 static int lbs_add_mesh(struct lbs_private *priv)
1319 {
1320 struct net_device *mesh_dev = NULL;
1321 int ret = 0;
1322
1323 lbs_deb_enter(LBS_DEB_MESH);
1324
1325 /* Allocate a virtual mesh device */
1326 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1327 lbs_deb_mesh("init mshX device failed\n");
1328 ret = -ENOMEM;
1329 goto done;
1330 }
1331 mesh_dev->priv = priv;
1332 priv->mesh_dev = mesh_dev;
1333
1334 mesh_dev->open = lbs_dev_open;
1335 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1336 mesh_dev->stop = lbs_mesh_stop;
1337 mesh_dev->do_ioctl = lbs_do_ioctl;
1338 mesh_dev->get_stats = lbs_get_stats;
1339 mesh_dev->set_mac_address = lbs_set_mac_address;
1340 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1341 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1342 sizeof(priv->dev->dev_addr));
1343
1344 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1345
1346 #ifdef WIRELESS_EXT
1347 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1348 #endif
1349 /* Register virtual mesh interface */
1350 ret = register_netdev(mesh_dev);
1351 if (ret) {
1352 lbs_pr_err("cannot register mshX virtual interface\n");
1353 goto err_free;
1354 }
1355
1356 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1357 if (ret)
1358 goto err_unregister;
1359
1360 /* Everything successful */
1361 ret = 0;
1362 goto done;
1363
1364 err_unregister:
1365 unregister_netdev(mesh_dev);
1366
1367 err_free:
1368 free_netdev(mesh_dev);
1369
1370 done:
1371 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1372 return ret;
1373 }
1374
1375 static void lbs_remove_mesh(struct lbs_private *priv)
1376 {
1377 struct net_device *mesh_dev;
1378
1379
1380 mesh_dev = priv->mesh_dev;
1381 if (!mesh_dev)
1382 return;
1383
1384 lbs_deb_enter(LBS_DEB_MESH);
1385 netif_stop_queue(mesh_dev);
1386 netif_carrier_off(priv->mesh_dev);
1387 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1388 unregister_netdev(mesh_dev);
1389 priv->mesh_dev = NULL;
1390 free_netdev(mesh_dev);
1391 lbs_deb_leave(LBS_DEB_MESH);
1392 }
1393
1394 /**
1395 * @brief This function finds the CFP in
1396 * region_cfp_table based on region and band parameter.
1397 *
1398 * @param region The region code
1399 * @param band The band
1400 * @param cfp_no A pointer to CFP number
1401 * @return A pointer to CFP
1402 */
1403 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1404 {
1405 int i, end;
1406
1407 lbs_deb_enter(LBS_DEB_MAIN);
1408
1409 end = ARRAY_SIZE(region_cfp_table);
1410
1411 for (i = 0; i < end ; i++) {
1412 lbs_deb_main("region_cfp_table[i].region=%d\n",
1413 region_cfp_table[i].region);
1414 if (region_cfp_table[i].region == region) {
1415 *cfp_no = region_cfp_table[i].cfp_no_BG;
1416 lbs_deb_leave(LBS_DEB_MAIN);
1417 return region_cfp_table[i].cfp_BG;
1418 }
1419 }
1420
1421 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1422 return NULL;
1423 }
1424
1425 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1426 {
1427 int ret = 0;
1428 int i = 0;
1429
1430 struct chan_freq_power *cfp;
1431 int cfp_no;
1432
1433 lbs_deb_enter(LBS_DEB_MAIN);
1434
1435 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1436
1437 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1438 if (cfp != NULL) {
1439 priv->region_channel[i].nrcfp = cfp_no;
1440 priv->region_channel[i].CFP = cfp;
1441 } else {
1442 lbs_deb_main("wrong region code %#x in band B/G\n",
1443 region);
1444 ret = -1;
1445 goto out;
1446 }
1447 priv->region_channel[i].valid = 1;
1448 priv->region_channel[i].region = region;
1449 priv->region_channel[i].band = band;
1450 i++;
1451 out:
1452 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1453 return ret;
1454 }
1455
1456 void lbs_queue_event(struct lbs_private *priv, u32 event)
1457 {
1458 unsigned long flags;
1459
1460 lbs_deb_enter(LBS_DEB_THREAD);
1461 spin_lock_irqsave(&priv->driver_lock, flags);
1462
1463 if (priv->psstate == PS_STATE_SLEEP)
1464 priv->psstate = PS_STATE_AWAKE;
1465
1466 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1467
1468 wake_up_interruptible(&priv->waitq);
1469
1470 spin_unlock_irqrestore(&priv->driver_lock, flags);
1471 lbs_deb_leave(LBS_DEB_THREAD);
1472 }
1473 EXPORT_SYMBOL_GPL(lbs_queue_event);
1474
1475 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1476 {
1477 lbs_deb_enter(LBS_DEB_THREAD);
1478
1479 if (priv->psstate == PS_STATE_SLEEP)
1480 priv->psstate = PS_STATE_AWAKE;
1481
1482 /* Swap buffers by flipping the response index */
1483 BUG_ON(resp_idx > 1);
1484 priv->resp_idx = resp_idx;
1485
1486 wake_up_interruptible(&priv->waitq);
1487
1488 lbs_deb_leave(LBS_DEB_THREAD);
1489 }
1490 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1491
1492 static int __init lbs_init_module(void)
1493 {
1494 lbs_deb_enter(LBS_DEB_MAIN);
1495 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1496 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1497 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1498 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1499 lbs_debugfs_init();
1500 lbs_deb_leave(LBS_DEB_MAIN);
1501 return 0;
1502 }
1503
1504 static void __exit lbs_exit_module(void)
1505 {
1506 lbs_deb_enter(LBS_DEB_MAIN);
1507 lbs_debugfs_remove();
1508 lbs_deb_leave(LBS_DEB_MAIN);
1509 }
1510
1511 /*
1512 * rtap interface support fuctions
1513 */
1514
1515 static int lbs_rtap_open(struct net_device *dev)
1516 {
1517 /* Yes, _stop_ the queue. Because we don't support injection */
1518 lbs_deb_enter(LBS_DEB_MAIN);
1519 netif_carrier_off(dev);
1520 netif_stop_queue(dev);
1521 lbs_deb_leave(LBS_DEB_LEAVE);
1522 return 0;
1523 }
1524
1525 static int lbs_rtap_stop(struct net_device *dev)
1526 {
1527 lbs_deb_enter(LBS_DEB_MAIN);
1528 lbs_deb_leave(LBS_DEB_MAIN);
1529 return 0;
1530 }
1531
1532 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1533 {
1534 netif_stop_queue(dev);
1535 return NETDEV_TX_BUSY;
1536 }
1537
1538 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1539 {
1540 struct lbs_private *priv = dev->priv;
1541 lbs_deb_enter(LBS_DEB_NET);
1542 return &priv->stats;
1543 }
1544
1545
1546 static void lbs_remove_rtap(struct lbs_private *priv)
1547 {
1548 lbs_deb_enter(LBS_DEB_MAIN);
1549 if (priv->rtap_net_dev == NULL)
1550 return;
1551 unregister_netdev(priv->rtap_net_dev);
1552 free_netdev(priv->rtap_net_dev);
1553 priv->rtap_net_dev = NULL;
1554 lbs_deb_leave(LBS_DEB_MAIN);
1555 }
1556
1557 static int lbs_add_rtap(struct lbs_private *priv)
1558 {
1559 int ret = 0;
1560 struct net_device *rtap_dev;
1561
1562 lbs_deb_enter(LBS_DEB_MAIN);
1563 if (priv->rtap_net_dev) {
1564 ret = -EPERM;
1565 goto out;
1566 }
1567
1568 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1569 if (rtap_dev == NULL) {
1570 ret = -ENOMEM;
1571 goto out;
1572 }
1573
1574 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1575 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1576 rtap_dev->open = lbs_rtap_open;
1577 rtap_dev->stop = lbs_rtap_stop;
1578 rtap_dev->get_stats = lbs_rtap_get_stats;
1579 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1580 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1581 rtap_dev->priv = priv;
1582 SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1583
1584 ret = register_netdev(rtap_dev);
1585 if (ret) {
1586 free_netdev(rtap_dev);
1587 goto out;
1588 }
1589 priv->rtap_net_dev = rtap_dev;
1590
1591 out:
1592 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1593 return ret;
1594 }
1595
1596 #ifndef CONFIG_IEEE80211
1597 const char *escape_essid(const char *essid, u8 essid_len)
1598 {
1599 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1600 const char *s = essid;
1601 char *d = escaped;
1602
1603 if (ieee80211_is_empty_essid(essid, essid_len)) {
1604 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1605 return escaped;
1606 }
1607
1608 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1609 while (essid_len--) {
1610 if (*s == '\0') {
1611 *d++ = '\\';
1612 *d++ = '0';
1613 s++;
1614 } else {
1615 *d++ = *s++;
1616 }
1617 }
1618 *d = '\0';
1619 return escaped;
1620 }
1621 #endif
1622
1623 module_init(lbs_init_module);
1624 module_exit(lbs_exit_module);
1625
1626 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1627 MODULE_AUTHOR("Marvell International Ltd.");
1628 MODULE_LICENSE("GPL");
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