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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-14 20:31:54 -0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-14 20:31:54 -0400
commit6dc6472581f693b5fc95aebedf67b4960fb85cf0 (patch)
tree06a5a9a08519950575505273eabced331ed51405 /drivers/net/wireless/libertas_tf/main.c
parentee673eaa72d8d185012b1027a05e25aba18c267f (diff)
parent8acd3a60bcca17c6d89c73cee3ad6057eb83ba1e (diff)
Merge commit 'origin'
Manual fixup of conflicts on: arch/powerpc/include/asm/dcr-regs.h drivers/net/ibm_newemac/core.h
Diffstat (limited to 'drivers/net/wireless/libertas_tf/main.c')
-rw-r--r--drivers/net/wireless/libertas_tf/main.c662
1 files changed, 662 insertions, 0 deletions
diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
new file mode 100644
index 000000000000..feff945ad856
--- /dev/null
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -0,0 +1,662 @@
1/*
2 * Copyright (C) 2008, cozybit Inc.
3 * Copyright (C) 2003-2006, Marvell International Ltd.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 */
10#include "libertas_tf.h"
11#include "linux/etherdevice.h"
12
13#define DRIVER_RELEASE_VERSION "004.p0"
14/* thinfirm version: 5.132.X.pX */
15#define LBTF_FW_VER_MIN 0x05840300
16#define LBTF_FW_VER_MAX 0x0584ffff
17#define QOS_CONTROL_LEN 2
18
19static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION;
20struct workqueue_struct *lbtf_wq;
21
22static const struct ieee80211_channel lbtf_channels[] = {
23 { .center_freq = 2412, .hw_value = 1 },
24 { .center_freq = 2417, .hw_value = 2 },
25 { .center_freq = 2422, .hw_value = 3 },
26 { .center_freq = 2427, .hw_value = 4 },
27 { .center_freq = 2432, .hw_value = 5 },
28 { .center_freq = 2437, .hw_value = 6 },
29 { .center_freq = 2442, .hw_value = 7 },
30 { .center_freq = 2447, .hw_value = 8 },
31 { .center_freq = 2452, .hw_value = 9 },
32 { .center_freq = 2457, .hw_value = 10 },
33 { .center_freq = 2462, .hw_value = 11 },
34 { .center_freq = 2467, .hw_value = 12 },
35 { .center_freq = 2472, .hw_value = 13 },
36 { .center_freq = 2484, .hw_value = 14 },
37};
38
39/* This table contains the hardware specific values for the modulation rates. */
40static const struct ieee80211_rate lbtf_rates[] = {
41 { .bitrate = 10,
42 .hw_value = 0, },
43 { .bitrate = 20,
44 .hw_value = 1,
45 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
46 { .bitrate = 55,
47 .hw_value = 2,
48 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
49 { .bitrate = 110,
50 .hw_value = 3,
51 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
52 { .bitrate = 60,
53 .hw_value = 5,
54 .flags = 0 },
55 { .bitrate = 90,
56 .hw_value = 6,
57 .flags = 0 },
58 { .bitrate = 120,
59 .hw_value = 7,
60 .flags = 0 },
61 { .bitrate = 180,
62 .hw_value = 8,
63 .flags = 0 },
64 { .bitrate = 240,
65 .hw_value = 9,
66 .flags = 0 },
67 { .bitrate = 360,
68 .hw_value = 10,
69 .flags = 0 },
70 { .bitrate = 480,
71 .hw_value = 11,
72 .flags = 0 },
73 { .bitrate = 540,
74 .hw_value = 12,
75 .flags = 0 },
76};
77
78static void lbtf_cmd_work(struct work_struct *work)
79{
80 struct lbtf_private *priv = container_of(work, struct lbtf_private,
81 cmd_work);
82 spin_lock_irq(&priv->driver_lock);
83 /* command response? */
84 if (priv->cmd_response_rxed) {
85 priv->cmd_response_rxed = 0;
86 spin_unlock_irq(&priv->driver_lock);
87 lbtf_process_rx_command(priv);
88 spin_lock_irq(&priv->driver_lock);
89 }
90
91 if (priv->cmd_timed_out && priv->cur_cmd) {
92 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
93
94 if (++priv->nr_retries > 10) {
95 lbtf_complete_command(priv, cmdnode,
96 -ETIMEDOUT);
97 priv->nr_retries = 0;
98 } else {
99 priv->cur_cmd = NULL;
100
101 /* Stick it back at the _top_ of the pending
102 * queue for immediate resubmission */
103 list_add(&cmdnode->list, &priv->cmdpendingq);
104 }
105 }
106 priv->cmd_timed_out = 0;
107 spin_unlock_irq(&priv->driver_lock);
108
109 if (!priv->fw_ready)
110 return;
111 /* Execute the next command */
112 if (!priv->cur_cmd)
113 lbtf_execute_next_command(priv);
114}
115
116/**
117 * lbtf_setup_firmware: initialize firmware.
118 *
119 * @priv A pointer to struct lbtf_private structure
120 *
121 * Returns: 0 on success.
122 */
123static int lbtf_setup_firmware(struct lbtf_private *priv)
124{
125 int ret = -1;
126
127 /*
128 * Read priv address from HW
129 */
130 memset(priv->current_addr, 0xff, ETH_ALEN);
131 ret = lbtf_update_hw_spec(priv);
132 if (ret) {
133 ret = -1;
134 goto done;
135 }
136
137 lbtf_set_mac_control(priv);
138 lbtf_set_radio_control(priv);
139
140 ret = 0;
141done:
142 return ret;
143}
144
145/**
146 * This function handles the timeout of command sending.
147 * It will re-send the same command again.
148 */
149static void command_timer_fn(unsigned long data)
150{
151 struct lbtf_private *priv = (struct lbtf_private *)data;
152 unsigned long flags;
153
154 spin_lock_irqsave(&priv->driver_lock, flags);
155
156 if (!priv->cur_cmd) {
157 printk(KERN_DEBUG "libertastf: command timer expired; "
158 "no pending command\n");
159 goto out;
160 }
161
162 printk(KERN_DEBUG "libertas: command %x timed out\n",
163 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
164
165 priv->cmd_timed_out = 1;
166 queue_work(lbtf_wq, &priv->cmd_work);
167out:
168 spin_unlock_irqrestore(&priv->driver_lock, flags);
169}
170
171static int lbtf_init_adapter(struct lbtf_private *priv)
172{
173 memset(priv->current_addr, 0xff, ETH_ALEN);
174 mutex_init(&priv->lock);
175
176 priv->vif = NULL;
177 setup_timer(&priv->command_timer, command_timer_fn,
178 (unsigned long)priv);
179
180 INIT_LIST_HEAD(&priv->cmdfreeq);
181 INIT_LIST_HEAD(&priv->cmdpendingq);
182
183 spin_lock_init(&priv->driver_lock);
184
185 /* Allocate the command buffers */
186 if (lbtf_allocate_cmd_buffer(priv))
187 return -1;
188
189 return 0;
190}
191
192static void lbtf_free_adapter(struct lbtf_private *priv)
193{
194 lbtf_free_cmd_buffer(priv);
195 del_timer(&priv->command_timer);
196}
197
198static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
199{
200 struct lbtf_private *priv = hw->priv;
201
202 priv->skb_to_tx = skb;
203 queue_work(lbtf_wq, &priv->tx_work);
204 /*
205 * queue will be restarted when we receive transmission feedback if
206 * there are no buffered multicast frames to send
207 */
208 ieee80211_stop_queues(priv->hw);
209 return 0;
210}
211
212static void lbtf_tx_work(struct work_struct *work)
213{
214 struct lbtf_private *priv = container_of(work, struct lbtf_private,
215 tx_work);
216 unsigned int len;
217 struct ieee80211_tx_info *info;
218 struct txpd *txpd;
219 struct sk_buff *skb = NULL;
220 int err;
221
222 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
223 (!skb_queue_empty(&priv->bc_ps_buf)))
224 skb = skb_dequeue(&priv->bc_ps_buf);
225 else if (priv->skb_to_tx) {
226 skb = priv->skb_to_tx;
227 priv->skb_to_tx = NULL;
228 } else
229 return;
230
231 len = skb->len;
232 info = IEEE80211_SKB_CB(skb);
233 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
234
235 if (priv->surpriseremoved) {
236 dev_kfree_skb_any(skb);
237 return;
238 }
239
240 memset(txpd, 0, sizeof(struct txpd));
241 /* Activate per-packet rate selection */
242 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
243 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
244
245 /* copy destination address from 802.11 header */
246 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
247 ETH_ALEN);
248 txpd->tx_packet_length = cpu_to_le16(len);
249 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
250 BUG_ON(priv->tx_skb);
251 spin_lock_irq(&priv->driver_lock);
252 priv->tx_skb = skb;
253 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
254 spin_unlock_irq(&priv->driver_lock);
255 if (err) {
256 dev_kfree_skb_any(skb);
257 priv->tx_skb = NULL;
258 }
259}
260
261static int lbtf_op_start(struct ieee80211_hw *hw)
262{
263 struct lbtf_private *priv = hw->priv;
264 void *card = priv->card;
265 int ret = -1;
266
267 if (!priv->fw_ready)
268 /* Upload firmware */
269 if (priv->hw_prog_firmware(card))
270 goto err_prog_firmware;
271
272 /* poke the firmware */
273 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
274 priv->radioon = RADIO_ON;
275 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
276 ret = lbtf_setup_firmware(priv);
277 if (ret)
278 goto err_prog_firmware;
279
280 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
281 (priv->fwrelease > LBTF_FW_VER_MAX)) {
282 ret = -1;
283 goto err_prog_firmware;
284 }
285
286 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
287 return 0;
288
289err_prog_firmware:
290 priv->hw_reset_device(card);
291 return ret;
292}
293
294static void lbtf_op_stop(struct ieee80211_hw *hw)
295{
296 struct lbtf_private *priv = hw->priv;
297 unsigned long flags;
298 struct sk_buff *skb;
299
300 struct cmd_ctrl_node *cmdnode;
301 /* Flush pending command nodes */
302 spin_lock_irqsave(&priv->driver_lock, flags);
303 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
304 cmdnode->result = -ENOENT;
305 cmdnode->cmdwaitqwoken = 1;
306 wake_up_interruptible(&cmdnode->cmdwait_q);
307 }
308
309 spin_unlock_irqrestore(&priv->driver_lock, flags);
310 cancel_work_sync(&priv->cmd_work);
311 cancel_work_sync(&priv->tx_work);
312 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
313 dev_kfree_skb_any(skb);
314 priv->radioon = RADIO_OFF;
315 lbtf_set_radio_control(priv);
316
317 return;
318}
319
320static int lbtf_op_add_interface(struct ieee80211_hw *hw,
321 struct ieee80211_if_init_conf *conf)
322{
323 struct lbtf_private *priv = hw->priv;
324 if (priv->vif != NULL)
325 return -EOPNOTSUPP;
326
327 priv->vif = conf->vif;
328 switch (conf->type) {
329 case NL80211_IFTYPE_MESH_POINT:
330 case NL80211_IFTYPE_AP:
331 lbtf_set_mode(priv, LBTF_AP_MODE);
332 break;
333 case NL80211_IFTYPE_STATION:
334 lbtf_set_mode(priv, LBTF_STA_MODE);
335 break;
336 default:
337 priv->vif = NULL;
338 return -EOPNOTSUPP;
339 }
340 lbtf_set_mac_address(priv, (u8 *) conf->mac_addr);
341 return 0;
342}
343
344static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
345 struct ieee80211_if_init_conf *conf)
346{
347 struct lbtf_private *priv = hw->priv;
348
349 if (priv->vif->type == NL80211_IFTYPE_AP ||
350 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
351 lbtf_beacon_ctrl(priv, 0, 0);
352 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
353 lbtf_set_bssid(priv, 0, NULL);
354 priv->vif = NULL;
355}
356
357static int lbtf_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
358{
359 struct lbtf_private *priv = hw->priv;
360 if (conf->channel->center_freq != priv->cur_freq) {
361 priv->cur_freq = conf->channel->center_freq;
362 lbtf_set_channel(priv, conf->channel->hw_value);
363 }
364 return 0;
365}
366
367static int lbtf_op_config_interface(struct ieee80211_hw *hw,
368 struct ieee80211_vif *vif,
369 struct ieee80211_if_conf *conf)
370{
371 struct lbtf_private *priv = hw->priv;
372 struct sk_buff *beacon;
373
374 switch (priv->vif->type) {
375 case NL80211_IFTYPE_AP:
376 case NL80211_IFTYPE_MESH_POINT:
377 beacon = ieee80211_beacon_get(hw, vif);
378 if (beacon) {
379 lbtf_beacon_set(priv, beacon);
380 kfree_skb(beacon);
381 lbtf_beacon_ctrl(priv, 1, hw->conf.beacon_int);
382 }
383 break;
384 default:
385 break;
386 }
387
388 if (conf->bssid) {
389 u8 null_bssid[ETH_ALEN] = {0};
390 bool activate = compare_ether_addr(conf->bssid, null_bssid);
391 lbtf_set_bssid(priv, activate, conf->bssid);
392 }
393
394 return 0;
395}
396
397#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
398static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
399 unsigned int changed_flags,
400 unsigned int *new_flags,
401 int mc_count, struct dev_mc_list *mclist)
402{
403 struct lbtf_private *priv = hw->priv;
404 int old_mac_control = priv->mac_control;
405 int i;
406 changed_flags &= SUPPORTED_FIF_FLAGS;
407 *new_flags &= SUPPORTED_FIF_FLAGS;
408
409 if (!changed_flags)
410 return;
411
412 if (*new_flags & (FIF_PROMISC_IN_BSS))
413 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
414 else
415 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
416 if (*new_flags & (FIF_ALLMULTI) ||
417 mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
418 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
419 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
420 } else if (mc_count) {
421 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
422 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
423 priv->nr_of_multicastmacaddr = mc_count;
424 for (i = 0; i < mc_count; i++) {
425 if (!mclist)
426 break;
427 memcpy(&priv->multicastlist[i], mclist->da_addr,
428 ETH_ALEN);
429 mclist = mclist->next;
430 }
431 lbtf_cmd_set_mac_multicast_addr(priv);
432 } else {
433 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
434 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
435 if (priv->nr_of_multicastmacaddr) {
436 priv->nr_of_multicastmacaddr = 0;
437 lbtf_cmd_set_mac_multicast_addr(priv);
438 }
439 }
440
441
442 if (priv->mac_control != old_mac_control)
443 lbtf_set_mac_control(priv);
444}
445
446static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
447 struct ieee80211_vif *vif,
448 struct ieee80211_bss_conf *bss_conf,
449 u32 changes)
450{
451 struct lbtf_private *priv = hw->priv;
452
453 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
454 if (bss_conf->use_short_preamble)
455 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
456 else
457 priv->preamble = CMD_TYPE_LONG_PREAMBLE;
458 lbtf_set_radio_control(priv);
459 }
460
461 return;
462}
463
464static const struct ieee80211_ops lbtf_ops = {
465 .tx = lbtf_op_tx,
466 .start = lbtf_op_start,
467 .stop = lbtf_op_stop,
468 .add_interface = lbtf_op_add_interface,
469 .remove_interface = lbtf_op_remove_interface,
470 .config = lbtf_op_config,
471 .config_interface = lbtf_op_config_interface,
472 .configure_filter = lbtf_op_configure_filter,
473 .bss_info_changed = lbtf_op_bss_info_changed,
474};
475
476int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
477{
478 struct ieee80211_rx_status stats;
479 struct rxpd *prxpd;
480 int need_padding;
481 unsigned int flags;
482 struct ieee80211_hdr *hdr;
483
484 prxpd = (struct rxpd *) skb->data;
485
486 stats.flag = 0;
487 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
488 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
489 stats.freq = priv->cur_freq;
490 stats.band = IEEE80211_BAND_2GHZ;
491 stats.signal = prxpd->snr;
492 stats.noise = prxpd->nf;
493 stats.qual = prxpd->snr - prxpd->nf;
494 /* Marvell rate index has a hole at value 4 */
495 if (prxpd->rx_rate > 4)
496 --prxpd->rx_rate;
497 stats.rate_idx = prxpd->rx_rate;
498 skb_pull(skb, sizeof(struct rxpd));
499
500 hdr = (struct ieee80211_hdr *)skb->data;
501 flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
502
503 need_padding = ieee80211_is_data_qos(hdr->frame_control);
504 need_padding ^= ieee80211_has_a4(hdr->frame_control);
505 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
506 (*ieee80211_get_qos_ctl(hdr) &
507 IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
508
509 if (need_padding) {
510 memmove(skb->data + 2, skb->data, skb->len);
511 skb_reserve(skb, 2);
512 }
513
514 ieee80211_rx_irqsafe(priv->hw, skb, &stats);
515 return 0;
516}
517EXPORT_SYMBOL_GPL(lbtf_rx);
518
519/**
520 * lbtf_add_card: Add and initialize the card, no fw upload yet.
521 *
522 * @card A pointer to card
523 *
524 * Returns: pointer to struct lbtf_priv.
525 */
526struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
527{
528 struct ieee80211_hw *hw;
529 struct lbtf_private *priv = NULL;
530
531 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
532 if (!hw)
533 goto done;
534
535 priv = hw->priv;
536 if (lbtf_init_adapter(priv))
537 goto err_init_adapter;
538
539 priv->hw = hw;
540 priv->card = card;
541 priv->tx_skb = NULL;
542
543 hw->queues = 1;
544 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
545 hw->extra_tx_headroom = sizeof(struct txpd);
546 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
547 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
548 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
549 priv->band.bitrates = priv->rates;
550 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
551 priv->band.channels = priv->channels;
552 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
553 skb_queue_head_init(&priv->bc_ps_buf);
554
555 SET_IEEE80211_DEV(hw, dmdev);
556
557 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
558 INIT_WORK(&priv->tx_work, lbtf_tx_work);
559 if (ieee80211_register_hw(hw))
560 goto err_init_adapter;
561
562 goto done;
563
564err_init_adapter:
565 lbtf_free_adapter(priv);
566 ieee80211_free_hw(hw);
567 priv = NULL;
568
569done:
570 return priv;
571}
572EXPORT_SYMBOL_GPL(lbtf_add_card);
573
574
575int lbtf_remove_card(struct lbtf_private *priv)
576{
577 struct ieee80211_hw *hw = priv->hw;
578
579 priv->surpriseremoved = 1;
580 del_timer(&priv->command_timer);
581 lbtf_free_adapter(priv);
582 priv->hw = NULL;
583 ieee80211_unregister_hw(hw);
584 ieee80211_free_hw(hw);
585
586 return 0;
587}
588EXPORT_SYMBOL_GPL(lbtf_remove_card);
589
590void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
591{
592 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
593 memset(&info->status, 0, sizeof(info->status));
594 /*
595 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
596 * default pid rc algorithm.
597 *
598 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
599 */
600 info->status.excessive_retries = fail ? 1 : 0;
601 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
602 info->flags |= IEEE80211_TX_STAT_ACK;
603 skb_pull(priv->tx_skb, sizeof(struct txpd));
604 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
605 priv->tx_skb = NULL;
606 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
607 ieee80211_wake_queues(priv->hw);
608 else
609 queue_work(lbtf_wq, &priv->tx_work);
610}
611EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
612
613void lbtf_bcn_sent(struct lbtf_private *priv)
614{
615 struct sk_buff *skb = NULL;
616
617 if (priv->vif->type != NL80211_IFTYPE_AP)
618 return;
619
620 if (skb_queue_empty(&priv->bc_ps_buf)) {
621 bool tx_buff_bc = 0;
622
623 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
624 skb_queue_tail(&priv->bc_ps_buf, skb);
625 tx_buff_bc = 1;
626 }
627 if (tx_buff_bc) {
628 ieee80211_stop_queues(priv->hw);
629 queue_work(lbtf_wq, &priv->tx_work);
630 }
631 }
632
633 skb = ieee80211_beacon_get(priv->hw, priv->vif);
634
635 if (skb) {
636 lbtf_beacon_set(priv, skb);
637 kfree_skb(skb);
638 }
639}
640EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
641
642static int __init lbtf_init_module(void)
643{
644 lbtf_wq = create_workqueue("libertastf");
645 if (lbtf_wq == NULL) {
646 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
647 return -ENOMEM;
648 }
649 return 0;
650}
651
652static void __exit lbtf_exit_module(void)
653{
654 destroy_workqueue(lbtf_wq);
655}
656
657module_init(lbtf_init_module);
658module_exit(lbtf_exit_module);
659
660MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
661MODULE_AUTHOR("Cozybit Inc.");
662MODULE_LICENSE("GPL");