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