1
2
3
4
5
6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8#include <linux/hardirq.h>
9#include <linux/slab.h>
10
11#include <linux/etherdevice.h>
12#include <linux/module.h>
13#include "libertas_tf.h"
14
15
16#define LBTF_FW_VER_MIN 0x05840300
17#define LBTF_FW_VER_MAX 0x0584ffff
18#define QOS_CONTROL_LEN 2
19
20
21unsigned int lbtf_debug;
22EXPORT_SYMBOL_GPL(lbtf_debug);
23module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
24
25struct workqueue_struct *lbtf_wq;
26
27static const struct ieee80211_channel lbtf_channels[] = {
28 { .center_freq = 2412, .hw_value = 1 },
29 { .center_freq = 2417, .hw_value = 2 },
30 { .center_freq = 2422, .hw_value = 3 },
31 { .center_freq = 2427, .hw_value = 4 },
32 { .center_freq = 2432, .hw_value = 5 },
33 { .center_freq = 2437, .hw_value = 6 },
34 { .center_freq = 2442, .hw_value = 7 },
35 { .center_freq = 2447, .hw_value = 8 },
36 { .center_freq = 2452, .hw_value = 9 },
37 { .center_freq = 2457, .hw_value = 10 },
38 { .center_freq = 2462, .hw_value = 11 },
39 { .center_freq = 2467, .hw_value = 12 },
40 { .center_freq = 2472, .hw_value = 13 },
41 { .center_freq = 2484, .hw_value = 14 },
42};
43
44
45static const struct ieee80211_rate lbtf_rates[] = {
46 { .bitrate = 10,
47 .hw_value = 0, },
48 { .bitrate = 20,
49 .hw_value = 1,
50 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
51 { .bitrate = 55,
52 .hw_value = 2,
53 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
54 { .bitrate = 110,
55 .hw_value = 3,
56 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
57 { .bitrate = 60,
58 .hw_value = 5,
59 .flags = 0 },
60 { .bitrate = 90,
61 .hw_value = 6,
62 .flags = 0 },
63 { .bitrate = 120,
64 .hw_value = 7,
65 .flags = 0 },
66 { .bitrate = 180,
67 .hw_value = 8,
68 .flags = 0 },
69 { .bitrate = 240,
70 .hw_value = 9,
71 .flags = 0 },
72 { .bitrate = 360,
73 .hw_value = 10,
74 .flags = 0 },
75 { .bitrate = 480,
76 .hw_value = 11,
77 .flags = 0 },
78 { .bitrate = 540,
79 .hw_value = 12,
80 .flags = 0 },
81};
82
83static void lbtf_cmd_work(struct work_struct *work)
84{
85 struct lbtf_private *priv = container_of(work, struct lbtf_private,
86 cmd_work);
87
88 lbtf_deb_enter(LBTF_DEB_CMD);
89
90 spin_lock_irq(&priv->driver_lock);
91
92 if (priv->cmd_response_rxed) {
93 priv->cmd_response_rxed = 0;
94 spin_unlock_irq(&priv->driver_lock);
95 lbtf_process_rx_command(priv);
96 spin_lock_irq(&priv->driver_lock);
97 }
98
99 if (priv->cmd_timed_out && priv->cur_cmd) {
100 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
101
102 if (++priv->nr_retries > 10) {
103 lbtf_complete_command(priv, cmdnode,
104 -ETIMEDOUT);
105 priv->nr_retries = 0;
106 } else {
107 priv->cur_cmd = NULL;
108
109
110
111 list_add(&cmdnode->list, &priv->cmdpendingq);
112 }
113 }
114 priv->cmd_timed_out = 0;
115 spin_unlock_irq(&priv->driver_lock);
116
117
118 if (!priv->cur_cmd)
119 lbtf_execute_next_command(priv);
120
121 lbtf_deb_leave(LBTF_DEB_CMD);
122}
123
124
125
126
127
128static void command_timer_fn(struct timer_list *t)
129{
130 struct lbtf_private *priv = from_timer(priv, t, command_timer);
131 unsigned long flags;
132 lbtf_deb_enter(LBTF_DEB_CMD);
133
134 spin_lock_irqsave(&priv->driver_lock, flags);
135
136 if (!priv->cur_cmd) {
137 printk(KERN_DEBUG "libertastf: command timer expired; "
138 "no pending command\n");
139 goto out;
140 }
141
142 printk(KERN_DEBUG "libertas: command %x timed out\n",
143 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
144
145 priv->cmd_timed_out = 1;
146 queue_work(lbtf_wq, &priv->cmd_work);
147out:
148 spin_unlock_irqrestore(&priv->driver_lock, flags);
149 lbtf_deb_leave(LBTF_DEB_CMD);
150}
151
152static int lbtf_init_adapter(struct lbtf_private *priv)
153{
154 lbtf_deb_enter(LBTF_DEB_MAIN);
155 eth_broadcast_addr(priv->current_addr);
156 mutex_init(&priv->lock);
157
158 priv->vif = NULL;
159 timer_setup(&priv->command_timer, command_timer_fn, 0);
160
161 INIT_LIST_HEAD(&priv->cmdfreeq);
162 INIT_LIST_HEAD(&priv->cmdpendingq);
163
164 spin_lock_init(&priv->driver_lock);
165
166
167 if (lbtf_allocate_cmd_buffer(priv))
168 return -1;
169
170 lbtf_deb_leave(LBTF_DEB_MAIN);
171 return 0;
172}
173
174static void lbtf_free_adapter(struct lbtf_private *priv)
175{
176 lbtf_deb_enter(LBTF_DEB_MAIN);
177 lbtf_free_cmd_buffer(priv);
178 del_timer(&priv->command_timer);
179 lbtf_deb_leave(LBTF_DEB_MAIN);
180}
181
182static void lbtf_op_tx(struct ieee80211_hw *hw,
183 struct ieee80211_tx_control *control,
184 struct sk_buff *skb)
185{
186 struct lbtf_private *priv = hw->priv;
187
188 priv->skb_to_tx = skb;
189 queue_work(lbtf_wq, &priv->tx_work);
190
191
192
193
194 ieee80211_stop_queues(priv->hw);
195}
196
197static void lbtf_tx_work(struct work_struct *work)
198{
199 struct lbtf_private *priv = container_of(work, struct lbtf_private,
200 tx_work);
201 unsigned int len;
202 struct ieee80211_tx_info *info;
203 struct txpd *txpd;
204 struct sk_buff *skb = NULL;
205 int err;
206
207 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
208
209 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
210 (!skb_queue_empty(&priv->bc_ps_buf)))
211 skb = skb_dequeue(&priv->bc_ps_buf);
212 else if (priv->skb_to_tx) {
213 skb = priv->skb_to_tx;
214 priv->skb_to_tx = NULL;
215 } else {
216 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
217 return;
218 }
219
220 len = skb->len;
221 info = IEEE80211_SKB_CB(skb);
222 txpd = skb_push(skb, sizeof(struct txpd));
223
224 if (priv->surpriseremoved) {
225 dev_kfree_skb_any(skb);
226 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
227 return;
228 }
229
230 memset(txpd, 0, sizeof(struct txpd));
231
232 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
233 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
234
235
236 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
237 ETH_ALEN);
238 txpd->tx_packet_length = cpu_to_le16(len);
239 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
240 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
241 BUG_ON(priv->tx_skb);
242 spin_lock_irq(&priv->driver_lock);
243 priv->tx_skb = skb;
244 err = priv->ops->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
245 spin_unlock_irq(&priv->driver_lock);
246 if (err) {
247 dev_kfree_skb_any(skb);
248 priv->tx_skb = NULL;
249 pr_err("TX error: %d", err);
250 }
251 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
252}
253
254static int lbtf_op_start(struct ieee80211_hw *hw)
255{
256 struct lbtf_private *priv = hw->priv;
257
258 lbtf_deb_enter(LBTF_DEB_MACOPS);
259
260 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
261 priv->radioon = RADIO_ON;
262 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
263 lbtf_set_mac_control(priv);
264 lbtf_set_radio_control(priv);
265
266 lbtf_deb_leave(LBTF_DEB_MACOPS);
267 return 0;
268}
269
270static void lbtf_op_stop(struct ieee80211_hw *hw)
271{
272 struct lbtf_private *priv = hw->priv;
273 unsigned long flags;
274 struct sk_buff *skb;
275
276 struct cmd_ctrl_node *cmdnode;
277
278 lbtf_deb_enter(LBTF_DEB_MACOPS);
279
280
281 spin_lock_irqsave(&priv->driver_lock, flags);
282 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
283 cmdnode->result = -ENOENT;
284 cmdnode->cmdwaitqwoken = 1;
285 wake_up_interruptible(&cmdnode->cmdwait_q);
286 }
287
288 spin_unlock_irqrestore(&priv->driver_lock, flags);
289 cancel_work_sync(&priv->cmd_work);
290 cancel_work_sync(&priv->tx_work);
291 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
292 dev_kfree_skb_any(skb);
293 priv->radioon = RADIO_OFF;
294 lbtf_set_radio_control(priv);
295
296 lbtf_deb_leave(LBTF_DEB_MACOPS);
297}
298
299static int lbtf_op_add_interface(struct ieee80211_hw *hw,
300 struct ieee80211_vif *vif)
301{
302 struct lbtf_private *priv = hw->priv;
303 lbtf_deb_enter(LBTF_DEB_MACOPS);
304 if (priv->vif != NULL)
305 return -EOPNOTSUPP;
306
307 priv->vif = vif;
308 switch (vif->type) {
309 case NL80211_IFTYPE_MESH_POINT:
310 case NL80211_IFTYPE_AP:
311 lbtf_set_mode(priv, LBTF_AP_MODE);
312 break;
313 case NL80211_IFTYPE_STATION:
314 lbtf_set_mode(priv, LBTF_STA_MODE);
315 break;
316 default:
317 priv->vif = NULL;
318 return -EOPNOTSUPP;
319 }
320 lbtf_set_mac_address(priv, (u8 *) vif->addr);
321 lbtf_deb_leave(LBTF_DEB_MACOPS);
322 return 0;
323}
324
325static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
326 struct ieee80211_vif *vif)
327{
328 struct lbtf_private *priv = hw->priv;
329 lbtf_deb_enter(LBTF_DEB_MACOPS);
330
331 if (priv->vif->type == NL80211_IFTYPE_AP ||
332 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
333 lbtf_beacon_ctrl(priv, 0, 0);
334 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
335 lbtf_set_bssid(priv, 0, NULL);
336 priv->vif = NULL;
337 lbtf_deb_leave(LBTF_DEB_MACOPS);
338}
339
340static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
341{
342 struct lbtf_private *priv = hw->priv;
343 struct ieee80211_conf *conf = &hw->conf;
344 lbtf_deb_enter(LBTF_DEB_MACOPS);
345
346 if (conf->chandef.chan->center_freq != priv->cur_freq) {
347 priv->cur_freq = conf->chandef.chan->center_freq;
348 lbtf_set_channel(priv, conf->chandef.chan->hw_value);
349 }
350 lbtf_deb_leave(LBTF_DEB_MACOPS);
351 return 0;
352}
353
354static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
355 struct netdev_hw_addr_list *mc_list)
356{
357 struct lbtf_private *priv = hw->priv;
358 int i;
359 struct netdev_hw_addr *ha;
360 int mc_count = netdev_hw_addr_list_count(mc_list);
361
362 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
363 return mc_count;
364
365 priv->nr_of_multicastmacaddr = mc_count;
366 i = 0;
367 netdev_hw_addr_list_for_each(ha, mc_list)
368 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);
369
370 return mc_count;
371}
372
373#define SUPPORTED_FIF_FLAGS FIF_ALLMULTI
374static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
375 unsigned int changed_flags,
376 unsigned int *new_flags,
377 u64 multicast)
378{
379 struct lbtf_private *priv = hw->priv;
380 int old_mac_control = priv->mac_control;
381
382 lbtf_deb_enter(LBTF_DEB_MACOPS);
383
384 changed_flags &= SUPPORTED_FIF_FLAGS;
385 *new_flags &= SUPPORTED_FIF_FLAGS;
386
387 if (!changed_flags) {
388 lbtf_deb_leave(LBTF_DEB_MACOPS);
389 return;
390 }
391
392 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
393 if (*new_flags & (FIF_ALLMULTI) ||
394 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
395 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
396 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
397 } else if (multicast) {
398 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
399 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
400 lbtf_cmd_set_mac_multicast_addr(priv);
401 } else {
402 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
403 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
404 if (priv->nr_of_multicastmacaddr) {
405 priv->nr_of_multicastmacaddr = 0;
406 lbtf_cmd_set_mac_multicast_addr(priv);
407 }
408 }
409
410
411 if (priv->mac_control != old_mac_control)
412 lbtf_set_mac_control(priv);
413
414 lbtf_deb_leave(LBTF_DEB_MACOPS);
415}
416
417static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
418 struct ieee80211_vif *vif,
419 struct ieee80211_bss_conf *bss_conf,
420 u32 changes)
421{
422 struct lbtf_private *priv = hw->priv;
423 struct sk_buff *beacon;
424 lbtf_deb_enter(LBTF_DEB_MACOPS);
425
426 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
427 switch (priv->vif->type) {
428 case NL80211_IFTYPE_AP:
429 case NL80211_IFTYPE_MESH_POINT:
430 beacon = ieee80211_beacon_get(hw, vif);
431 if (beacon) {
432 lbtf_beacon_set(priv, beacon);
433 kfree_skb(beacon);
434 lbtf_beacon_ctrl(priv, 1,
435 bss_conf->beacon_int);
436 }
437 break;
438 default:
439 break;
440 }
441 }
442
443 if (changes & BSS_CHANGED_BSSID) {
444 bool activate = !is_zero_ether_addr(bss_conf->bssid);
445 lbtf_set_bssid(priv, activate, bss_conf->bssid);
446 }
447
448 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
449 if (bss_conf->use_short_preamble)
450 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
451 else
452 priv->preamble = CMD_TYPE_LONG_PREAMBLE;
453 lbtf_set_radio_control(priv);
454 }
455
456 lbtf_deb_leave(LBTF_DEB_MACOPS);
457}
458
459static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
460 struct survey_info *survey)
461{
462 struct lbtf_private *priv = hw->priv;
463 struct ieee80211_conf *conf = &hw->conf;
464
465 if (idx != 0)
466 return -ENOENT;
467
468 survey->channel = conf->chandef.chan;
469 survey->filled = SURVEY_INFO_NOISE_DBM;
470 survey->noise = priv->noise;
471
472 return 0;
473}
474
475static const struct ieee80211_ops lbtf_ops = {
476 .tx = lbtf_op_tx,
477 .start = lbtf_op_start,
478 .stop = lbtf_op_stop,
479 .add_interface = lbtf_op_add_interface,
480 .remove_interface = lbtf_op_remove_interface,
481 .config = lbtf_op_config,
482 .prepare_multicast = lbtf_op_prepare_multicast,
483 .configure_filter = lbtf_op_configure_filter,
484 .bss_info_changed = lbtf_op_bss_info_changed,
485 .get_survey = lbtf_op_get_survey,
486};
487
488int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
489{
490 struct ieee80211_rx_status stats;
491 struct rxpd *prxpd;
492 int need_padding;
493 struct ieee80211_hdr *hdr;
494
495 lbtf_deb_enter(LBTF_DEB_RX);
496
497 if (priv->radioon != RADIO_ON) {
498 lbtf_deb_rx("rx before we turned on the radio");
499 goto done;
500 }
501
502 prxpd = (struct rxpd *) skb->data;
503
504 memset(&stats, 0, sizeof(stats));
505 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
506 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
507 stats.freq = priv->cur_freq;
508 stats.band = NL80211_BAND_2GHZ;
509 stats.signal = prxpd->snr - prxpd->nf;
510 priv->noise = prxpd->nf;
511
512 if (prxpd->rx_rate > 4)
513 --prxpd->rx_rate;
514 stats.rate_idx = prxpd->rx_rate;
515 skb_pull(skb, sizeof(struct rxpd));
516
517 hdr = (struct ieee80211_hdr *)skb->data;
518
519 need_padding = ieee80211_is_data_qos(hdr->frame_control);
520 need_padding ^= ieee80211_has_a4(hdr->frame_control);
521 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
522 (*ieee80211_get_qos_ctl(hdr) &
523 IEEE80211_QOS_CTL_A_MSDU_PRESENT);
524
525 if (need_padding) {
526 memmove(skb->data + 2, skb->data, skb->len);
527 skb_reserve(skb, 2);
528 }
529
530 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
531
532 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
533 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
534 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
535 min_t(unsigned int, skb->len, 100));
536
537 ieee80211_rx_irqsafe(priv->hw, skb);
538
539done:
540 lbtf_deb_leave(LBTF_DEB_RX);
541 return 0;
542}
543EXPORT_SYMBOL_GPL(lbtf_rx);
544
545
546
547
548
549
550
551
552struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev,
553 const struct lbtf_ops *ops)
554{
555 struct ieee80211_hw *hw;
556 struct lbtf_private *priv = NULL;
557
558 lbtf_deb_enter(LBTF_DEB_MAIN);
559
560 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
561 if (!hw)
562 goto done;
563
564 priv = hw->priv;
565 if (lbtf_init_adapter(priv))
566 goto err_init_adapter;
567
568 priv->hw = hw;
569 priv->card = card;
570 priv->ops = ops;
571 priv->tx_skb = NULL;
572 priv->radioon = RADIO_OFF;
573
574 hw->queues = 1;
575 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
576 ieee80211_hw_set(hw, SIGNAL_DBM);
577 hw->extra_tx_headroom = sizeof(struct txpd);
578 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
579 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
580 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
581 priv->band.bitrates = priv->rates;
582 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
583 priv->band.channels = priv->channels;
584 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
585 hw->wiphy->interface_modes =
586 BIT(NL80211_IFTYPE_STATION) |
587 BIT(NL80211_IFTYPE_ADHOC);
588 skb_queue_head_init(&priv->bc_ps_buf);
589
590 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
591
592 SET_IEEE80211_DEV(hw, dmdev);
593
594 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
595 INIT_WORK(&priv->tx_work, lbtf_tx_work);
596
597 if (priv->ops->hw_prog_firmware(priv)) {
598 lbtf_deb_usbd(dmdev, "Error programming the firmware\n");
599 priv->ops->hw_reset_device(priv);
600 goto err_init_adapter;
601 }
602
603 eth_broadcast_addr(priv->current_addr);
604 if (lbtf_update_hw_spec(priv))
605 goto err_init_adapter;
606
607 if (priv->fwrelease < LBTF_FW_VER_MIN ||
608 priv->fwrelease > LBTF_FW_VER_MAX) {
609 goto err_init_adapter;
610 }
611
612
613
614
615 lbtf_set_radio_control(priv);
616
617 if (ieee80211_register_hw(hw))
618 goto err_init_adapter;
619
620 dev_info(dmdev, "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
621 goto done;
622
623err_init_adapter:
624 lbtf_free_adapter(priv);
625 ieee80211_free_hw(hw);
626 priv = NULL;
627
628done:
629 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
630 return priv;
631}
632EXPORT_SYMBOL_GPL(lbtf_add_card);
633
634
635int lbtf_remove_card(struct lbtf_private *priv)
636{
637 struct ieee80211_hw *hw = priv->hw;
638
639 lbtf_deb_enter(LBTF_DEB_MAIN);
640
641 priv->surpriseremoved = 1;
642 del_timer(&priv->command_timer);
643 lbtf_free_adapter(priv);
644 priv->hw = NULL;
645 ieee80211_unregister_hw(hw);
646 ieee80211_free_hw(hw);
647
648 lbtf_deb_leave(LBTF_DEB_MAIN);
649 return 0;
650}
651EXPORT_SYMBOL_GPL(lbtf_remove_card);
652
653void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
654{
655 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
656
657 ieee80211_tx_info_clear_status(info);
658
659
660
661
662
663
664 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
665 info->flags |= IEEE80211_TX_STAT_ACK;
666 skb_pull(priv->tx_skb, sizeof(struct txpd));
667 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
668 priv->tx_skb = NULL;
669 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
670 ieee80211_wake_queues(priv->hw);
671 else
672 queue_work(lbtf_wq, &priv->tx_work);
673}
674EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
675
676void lbtf_bcn_sent(struct lbtf_private *priv)
677{
678 struct sk_buff *skb = NULL;
679
680 if (priv->vif->type != NL80211_IFTYPE_AP)
681 return;
682
683 if (skb_queue_empty(&priv->bc_ps_buf)) {
684 bool tx_buff_bc = false;
685
686 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
687 skb_queue_tail(&priv->bc_ps_buf, skb);
688 tx_buff_bc = true;
689 }
690 if (tx_buff_bc) {
691 ieee80211_stop_queues(priv->hw);
692 queue_work(lbtf_wq, &priv->tx_work);
693 }
694 }
695
696 skb = ieee80211_beacon_get(priv->hw, priv->vif);
697
698 if (skb) {
699 lbtf_beacon_set(priv, skb);
700 kfree_skb(skb);
701 }
702}
703EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
704
705static int __init lbtf_init_module(void)
706{
707 lbtf_deb_enter(LBTF_DEB_MAIN);
708 lbtf_wq = alloc_workqueue("libertastf", WQ_MEM_RECLAIM, 0);
709 if (lbtf_wq == NULL) {
710 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
711 return -ENOMEM;
712 }
713 lbtf_deb_leave(LBTF_DEB_MAIN);
714 return 0;
715}
716
717static void __exit lbtf_exit_module(void)
718{
719 lbtf_deb_enter(LBTF_DEB_MAIN);
720 destroy_workqueue(lbtf_wq);
721 lbtf_deb_leave(LBTF_DEB_MAIN);
722}
723
724module_init(lbtf_init_module);
725module_exit(lbtf_exit_module);
726
727MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
728MODULE_AUTHOR("Cozybit Inc.");
729MODULE_LICENSE("GPL");
730
