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10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12#include <linux/hardirq.h>
13#include <linux/slab.h>
14
15#include <linux/etherdevice.h>
16#include <linux/module.h>
17#include "libertas_tf.h"
18
19
20#define LBTF_FW_VER_MIN 0x05840300
21#define LBTF_FW_VER_MAX 0x0584ffff
22#define QOS_CONTROL_LEN 2
23
24
25unsigned int lbtf_debug;
26EXPORT_SYMBOL_GPL(lbtf_debug);
27module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
28
29struct workqueue_struct *lbtf_wq;
30
31static const struct ieee80211_channel lbtf_channels[] = {
32 { .center_freq = 2412, .hw_value = 1 },
33 { .center_freq = 2417, .hw_value = 2 },
34 { .center_freq = 2422, .hw_value = 3 },
35 { .center_freq = 2427, .hw_value = 4 },
36 { .center_freq = 2432, .hw_value = 5 },
37 { .center_freq = 2437, .hw_value = 6 },
38 { .center_freq = 2442, .hw_value = 7 },
39 { .center_freq = 2447, .hw_value = 8 },
40 { .center_freq = 2452, .hw_value = 9 },
41 { .center_freq = 2457, .hw_value = 10 },
42 { .center_freq = 2462, .hw_value = 11 },
43 { .center_freq = 2467, .hw_value = 12 },
44 { .center_freq = 2472, .hw_value = 13 },
45 { .center_freq = 2484, .hw_value = 14 },
46};
47
48
49static const struct ieee80211_rate lbtf_rates[] = {
50 { .bitrate = 10,
51 .hw_value = 0, },
52 { .bitrate = 20,
53 .hw_value = 1,
54 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
55 { .bitrate = 55,
56 .hw_value = 2,
57 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
58 { .bitrate = 110,
59 .hw_value = 3,
60 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
61 { .bitrate = 60,
62 .hw_value = 5,
63 .flags = 0 },
64 { .bitrate = 90,
65 .hw_value = 6,
66 .flags = 0 },
67 { .bitrate = 120,
68 .hw_value = 7,
69 .flags = 0 },
70 { .bitrate = 180,
71 .hw_value = 8,
72 .flags = 0 },
73 { .bitrate = 240,
74 .hw_value = 9,
75 .flags = 0 },
76 { .bitrate = 360,
77 .hw_value = 10,
78 .flags = 0 },
79 { .bitrate = 480,
80 .hw_value = 11,
81 .flags = 0 },
82 { .bitrate = 540,
83 .hw_value = 12,
84 .flags = 0 },
85};
86
87static void lbtf_cmd_work(struct work_struct *work)
88{
89 struct lbtf_private *priv = container_of(work, struct lbtf_private,
90 cmd_work);
91
92 lbtf_deb_enter(LBTF_DEB_CMD);
93
94 spin_lock_irq(&priv->driver_lock);
95
96 if (priv->cmd_response_rxed) {
97 priv->cmd_response_rxed = 0;
98 spin_unlock_irq(&priv->driver_lock);
99 lbtf_process_rx_command(priv);
100 spin_lock_irq(&priv->driver_lock);
101 }
102
103 if (priv->cmd_timed_out && priv->cur_cmd) {
104 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
105
106 if (++priv->nr_retries > 10) {
107 lbtf_complete_command(priv, cmdnode,
108 -ETIMEDOUT);
109 priv->nr_retries = 0;
110 } else {
111 priv->cur_cmd = NULL;
112
113
114
115 list_add(&cmdnode->list, &priv->cmdpendingq);
116 }
117 }
118 priv->cmd_timed_out = 0;
119 spin_unlock_irq(&priv->driver_lock);
120
121 if (!priv->fw_ready) {
122 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
123 return;
124 }
125
126
127 if (!priv->cur_cmd)
128 lbtf_execute_next_command(priv);
129
130 lbtf_deb_leave(LBTF_DEB_CMD);
131}
132
133
134
135
136
137
138
139
140static int lbtf_setup_firmware(struct lbtf_private *priv)
141{
142 int ret = -1;
143
144 lbtf_deb_enter(LBTF_DEB_FW);
145
146
147
148 eth_broadcast_addr(priv->current_addr);
149 ret = lbtf_update_hw_spec(priv);
150 if (ret) {
151 ret = -1;
152 goto done;
153 }
154
155 lbtf_set_mac_control(priv);
156 lbtf_set_radio_control(priv);
157
158 ret = 0;
159done:
160 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
161 return ret;
162}
163
164
165
166
167
168static void command_timer_fn(unsigned long data)
169{
170 struct lbtf_private *priv = (struct lbtf_private *)data;
171 unsigned long flags;
172 lbtf_deb_enter(LBTF_DEB_CMD);
173
174 spin_lock_irqsave(&priv->driver_lock, flags);
175
176 if (!priv->cur_cmd) {
177 printk(KERN_DEBUG "libertastf: command timer expired; "
178 "no pending command\n");
179 goto out;
180 }
181
182 printk(KERN_DEBUG "libertas: command %x timed out\n",
183 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
184
185 priv->cmd_timed_out = 1;
186 queue_work(lbtf_wq, &priv->cmd_work);
187out:
188 spin_unlock_irqrestore(&priv->driver_lock, flags);
189 lbtf_deb_leave(LBTF_DEB_CMD);
190}
191
192static int lbtf_init_adapter(struct lbtf_private *priv)
193{
194 lbtf_deb_enter(LBTF_DEB_MAIN);
195 eth_broadcast_addr(priv->current_addr);
196 mutex_init(&priv->lock);
197
198 priv->vif = NULL;
199 setup_timer(&priv->command_timer, command_timer_fn,
200 (unsigned long)priv);
201
202 INIT_LIST_HEAD(&priv->cmdfreeq);
203 INIT_LIST_HEAD(&priv->cmdpendingq);
204
205 spin_lock_init(&priv->driver_lock);
206
207
208 if (lbtf_allocate_cmd_buffer(priv))
209 return -1;
210
211 lbtf_deb_leave(LBTF_DEB_MAIN);
212 return 0;
213}
214
215static void lbtf_free_adapter(struct lbtf_private *priv)
216{
217 lbtf_deb_enter(LBTF_DEB_MAIN);
218 lbtf_free_cmd_buffer(priv);
219 del_timer(&priv->command_timer);
220 lbtf_deb_leave(LBTF_DEB_MAIN);
221}
222
223static void lbtf_op_tx(struct ieee80211_hw *hw,
224 struct ieee80211_tx_control *control,
225 struct sk_buff *skb)
226{
227 struct lbtf_private *priv = hw->priv;
228
229 priv->skb_to_tx = skb;
230 queue_work(lbtf_wq, &priv->tx_work);
231
232
233
234
235 ieee80211_stop_queues(priv->hw);
236}
237
238static void lbtf_tx_work(struct work_struct *work)
239{
240 struct lbtf_private *priv = container_of(work, struct lbtf_private,
241 tx_work);
242 unsigned int len;
243 struct ieee80211_tx_info *info;
244 struct txpd *txpd;
245 struct sk_buff *skb = NULL;
246 int err;
247
248 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
249
250 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
251 (!skb_queue_empty(&priv->bc_ps_buf)))
252 skb = skb_dequeue(&priv->bc_ps_buf);
253 else if (priv->skb_to_tx) {
254 skb = priv->skb_to_tx;
255 priv->skb_to_tx = NULL;
256 } else {
257 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
258 return;
259 }
260
261 len = skb->len;
262 info = IEEE80211_SKB_CB(skb);
263 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
264
265 if (priv->surpriseremoved) {
266 dev_kfree_skb_any(skb);
267 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
268 return;
269 }
270
271 memset(txpd, 0, sizeof(struct txpd));
272
273 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
274 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
275
276
277 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
278 ETH_ALEN);
279 txpd->tx_packet_length = cpu_to_le16(len);
280 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
281 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
282 BUG_ON(priv->tx_skb);
283 spin_lock_irq(&priv->driver_lock);
284 priv->tx_skb = skb;
285 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
286 spin_unlock_irq(&priv->driver_lock);
287 if (err) {
288 dev_kfree_skb_any(skb);
289 priv->tx_skb = NULL;
290 pr_err("TX error: %d", err);
291 }
292 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
293}
294
295static int lbtf_op_start(struct ieee80211_hw *hw)
296{
297 struct lbtf_private *priv = hw->priv;
298 void *card = priv->card;
299 int ret = -1;
300
301 lbtf_deb_enter(LBTF_DEB_MACOPS);
302
303 if (!priv->fw_ready)
304
305 if (priv->hw_prog_firmware(card))
306 goto err_prog_firmware;
307
308
309 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
310 priv->radioon = RADIO_ON;
311 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
312 ret = lbtf_setup_firmware(priv);
313 if (ret)
314 goto err_prog_firmware;
315
316 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
317 (priv->fwrelease > LBTF_FW_VER_MAX)) {
318 ret = -1;
319 goto err_prog_firmware;
320 }
321
322 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
323 lbtf_deb_leave(LBTF_DEB_MACOPS);
324 return 0;
325
326err_prog_firmware:
327 priv->hw_reset_device(card);
328 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programming fw; ret=%d", ret);
329 return ret;
330}
331
332static void lbtf_op_stop(struct ieee80211_hw *hw)
333{
334 struct lbtf_private *priv = hw->priv;
335 unsigned long flags;
336 struct sk_buff *skb;
337
338 struct cmd_ctrl_node *cmdnode;
339
340 lbtf_deb_enter(LBTF_DEB_MACOPS);
341
342
343 spin_lock_irqsave(&priv->driver_lock, flags);
344 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
345 cmdnode->result = -ENOENT;
346 cmdnode->cmdwaitqwoken = 1;
347 wake_up_interruptible(&cmdnode->cmdwait_q);
348 }
349
350 spin_unlock_irqrestore(&priv->driver_lock, flags);
351 cancel_work_sync(&priv->cmd_work);
352 cancel_work_sync(&priv->tx_work);
353 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
354 dev_kfree_skb_any(skb);
355 priv->radioon = RADIO_OFF;
356 lbtf_set_radio_control(priv);
357
358 lbtf_deb_leave(LBTF_DEB_MACOPS);
359}
360
361static int lbtf_op_add_interface(struct ieee80211_hw *hw,
362 struct ieee80211_vif *vif)
363{
364 struct lbtf_private *priv = hw->priv;
365 lbtf_deb_enter(LBTF_DEB_MACOPS);
366 if (priv->vif != NULL)
367 return -EOPNOTSUPP;
368
369 priv->vif = vif;
370 switch (vif->type) {
371 case NL80211_IFTYPE_MESH_POINT:
372 case NL80211_IFTYPE_AP:
373 lbtf_set_mode(priv, LBTF_AP_MODE);
374 break;
375 case NL80211_IFTYPE_STATION:
376 lbtf_set_mode(priv, LBTF_STA_MODE);
377 break;
378 default:
379 priv->vif = NULL;
380 return -EOPNOTSUPP;
381 }
382 lbtf_set_mac_address(priv, (u8 *) vif->addr);
383 lbtf_deb_leave(LBTF_DEB_MACOPS);
384 return 0;
385}
386
387static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
388 struct ieee80211_vif *vif)
389{
390 struct lbtf_private *priv = hw->priv;
391 lbtf_deb_enter(LBTF_DEB_MACOPS);
392
393 if (priv->vif->type == NL80211_IFTYPE_AP ||
394 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
395 lbtf_beacon_ctrl(priv, 0, 0);
396 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
397 lbtf_set_bssid(priv, 0, NULL);
398 priv->vif = NULL;
399 lbtf_deb_leave(LBTF_DEB_MACOPS);
400}
401
402static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
403{
404 struct lbtf_private *priv = hw->priv;
405 struct ieee80211_conf *conf = &hw->conf;
406 lbtf_deb_enter(LBTF_DEB_MACOPS);
407
408 if (conf->chandef.chan->center_freq != priv->cur_freq) {
409 priv->cur_freq = conf->chandef.chan->center_freq;
410 lbtf_set_channel(priv, conf->chandef.chan->hw_value);
411 }
412 lbtf_deb_leave(LBTF_DEB_MACOPS);
413 return 0;
414}
415
416static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
417 struct netdev_hw_addr_list *mc_list)
418{
419 struct lbtf_private *priv = hw->priv;
420 int i;
421 struct netdev_hw_addr *ha;
422 int mc_count = netdev_hw_addr_list_count(mc_list);
423
424 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
425 return mc_count;
426
427 priv->nr_of_multicastmacaddr = mc_count;
428 i = 0;
429 netdev_hw_addr_list_for_each(ha, mc_list)
430 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);
431
432 return mc_count;
433}
434
435#define SUPPORTED_FIF_FLAGS FIF_ALLMULTI
436static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
437 unsigned int changed_flags,
438 unsigned int *new_flags,
439 u64 multicast)
440{
441 struct lbtf_private *priv = hw->priv;
442 int old_mac_control = priv->mac_control;
443
444 lbtf_deb_enter(LBTF_DEB_MACOPS);
445
446 changed_flags &= SUPPORTED_FIF_FLAGS;
447 *new_flags &= SUPPORTED_FIF_FLAGS;
448
449 if (!changed_flags) {
450 lbtf_deb_leave(LBTF_DEB_MACOPS);
451 return;
452 }
453
454 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
455 if (*new_flags & (FIF_ALLMULTI) ||
456 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
457 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
458 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
459 } else if (multicast) {
460 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
461 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
462 lbtf_cmd_set_mac_multicast_addr(priv);
463 } else {
464 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
465 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
466 if (priv->nr_of_multicastmacaddr) {
467 priv->nr_of_multicastmacaddr = 0;
468 lbtf_cmd_set_mac_multicast_addr(priv);
469 }
470 }
471
472
473 if (priv->mac_control != old_mac_control)
474 lbtf_set_mac_control(priv);
475
476 lbtf_deb_leave(LBTF_DEB_MACOPS);
477}
478
479static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
480 struct ieee80211_vif *vif,
481 struct ieee80211_bss_conf *bss_conf,
482 u32 changes)
483{
484 struct lbtf_private *priv = hw->priv;
485 struct sk_buff *beacon;
486 lbtf_deb_enter(LBTF_DEB_MACOPS);
487
488 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
489 switch (priv->vif->type) {
490 case NL80211_IFTYPE_AP:
491 case NL80211_IFTYPE_MESH_POINT:
492 beacon = ieee80211_beacon_get(hw, vif);
493 if (beacon) {
494 lbtf_beacon_set(priv, beacon);
495 kfree_skb(beacon);
496 lbtf_beacon_ctrl(priv, 1,
497 bss_conf->beacon_int);
498 }
499 break;
500 default:
501 break;
502 }
503 }
504
505 if (changes & BSS_CHANGED_BSSID) {
506 bool activate = !is_zero_ether_addr(bss_conf->bssid);
507 lbtf_set_bssid(priv, activate, bss_conf->bssid);
508 }
509
510 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
511 if (bss_conf->use_short_preamble)
512 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
513 else
514 priv->preamble = CMD_TYPE_LONG_PREAMBLE;
515 lbtf_set_radio_control(priv);
516 }
517
518 lbtf_deb_leave(LBTF_DEB_MACOPS);
519}
520
521static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
522 struct survey_info *survey)
523{
524 struct lbtf_private *priv = hw->priv;
525 struct ieee80211_conf *conf = &hw->conf;
526
527 if (idx != 0)
528 return -ENOENT;
529
530 survey->channel = conf->chandef.chan;
531 survey->filled = SURVEY_INFO_NOISE_DBM;
532 survey->noise = priv->noise;
533
534 return 0;
535}
536
537static const struct ieee80211_ops lbtf_ops = {
538 .tx = lbtf_op_tx,
539 .start = lbtf_op_start,
540 .stop = lbtf_op_stop,
541 .add_interface = lbtf_op_add_interface,
542 .remove_interface = lbtf_op_remove_interface,
543 .config = lbtf_op_config,
544 .prepare_multicast = lbtf_op_prepare_multicast,
545 .configure_filter = lbtf_op_configure_filter,
546 .bss_info_changed = lbtf_op_bss_info_changed,
547 .get_survey = lbtf_op_get_survey,
548};
549
550int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
551{
552 struct ieee80211_rx_status stats;
553 struct rxpd *prxpd;
554 int need_padding;
555 unsigned int flags;
556 struct ieee80211_hdr *hdr;
557
558 lbtf_deb_enter(LBTF_DEB_RX);
559
560 prxpd = (struct rxpd *) skb->data;
561
562 memset(&stats, 0, sizeof(stats));
563 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
564 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
565 stats.freq = priv->cur_freq;
566 stats.band = NL80211_BAND_2GHZ;
567 stats.signal = prxpd->snr;
568 priv->noise = prxpd->nf;
569
570 if (prxpd->rx_rate > 4)
571 --prxpd->rx_rate;
572 stats.rate_idx = prxpd->rx_rate;
573 skb_pull(skb, sizeof(struct rxpd));
574
575 hdr = (struct ieee80211_hdr *)skb->data;
576 flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
577
578 need_padding = ieee80211_is_data_qos(hdr->frame_control);
579 need_padding ^= ieee80211_has_a4(hdr->frame_control);
580 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
581 (*ieee80211_get_qos_ctl(hdr) &
582 IEEE80211_QOS_CTL_A_MSDU_PRESENT);
583
584 if (need_padding) {
585 memmove(skb->data + 2, skb->data, skb->len);
586 skb_reserve(skb, 2);
587 }
588
589 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
590
591 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
592 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
593 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
594 min_t(unsigned int, skb->len, 100));
595
596 ieee80211_rx_irqsafe(priv->hw, skb);
597
598 lbtf_deb_leave(LBTF_DEB_RX);
599 return 0;
600}
601EXPORT_SYMBOL_GPL(lbtf_rx);
602
603
604
605
606
607
608
609
610struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
611{
612 struct ieee80211_hw *hw;
613 struct lbtf_private *priv = NULL;
614
615 lbtf_deb_enter(LBTF_DEB_MAIN);
616
617 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
618 if (!hw)
619 goto done;
620
621 priv = hw->priv;
622 if (lbtf_init_adapter(priv))
623 goto err_init_adapter;
624
625 priv->hw = hw;
626 priv->card = card;
627 priv->tx_skb = NULL;
628
629 hw->queues = 1;
630 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
631 hw->extra_tx_headroom = sizeof(struct txpd);
632 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
633 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
634 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
635 priv->band.bitrates = priv->rates;
636 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
637 priv->band.channels = priv->channels;
638 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
639 hw->wiphy->interface_modes =
640 BIT(NL80211_IFTYPE_STATION) |
641 BIT(NL80211_IFTYPE_ADHOC);
642 skb_queue_head_init(&priv->bc_ps_buf);
643
644 SET_IEEE80211_DEV(hw, dmdev);
645
646 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
647 INIT_WORK(&priv->tx_work, lbtf_tx_work);
648 if (ieee80211_register_hw(hw))
649 goto err_init_adapter;
650
651 goto done;
652
653err_init_adapter:
654 lbtf_free_adapter(priv);
655 ieee80211_free_hw(hw);
656 priv = NULL;
657
658done:
659 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
660 return priv;
661}
662EXPORT_SYMBOL_GPL(lbtf_add_card);
663
664
665int lbtf_remove_card(struct lbtf_private *priv)
666{
667 struct ieee80211_hw *hw = priv->hw;
668
669 lbtf_deb_enter(LBTF_DEB_MAIN);
670
671 priv->surpriseremoved = 1;
672 del_timer(&priv->command_timer);
673 lbtf_free_adapter(priv);
674 priv->hw = NULL;
675 ieee80211_unregister_hw(hw);
676 ieee80211_free_hw(hw);
677
678 lbtf_deb_leave(LBTF_DEB_MAIN);
679 return 0;
680}
681EXPORT_SYMBOL_GPL(lbtf_remove_card);
682
683void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
684{
685 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
686
687 ieee80211_tx_info_clear_status(info);
688
689
690
691
692
693
694 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
695 info->flags |= IEEE80211_TX_STAT_ACK;
696 skb_pull(priv->tx_skb, sizeof(struct txpd));
697 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
698 priv->tx_skb = NULL;
699 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
700 ieee80211_wake_queues(priv->hw);
701 else
702 queue_work(lbtf_wq, &priv->tx_work);
703}
704EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
705
706void lbtf_bcn_sent(struct lbtf_private *priv)
707{
708 struct sk_buff *skb = NULL;
709
710 if (priv->vif->type != NL80211_IFTYPE_AP)
711 return;
712
713 if (skb_queue_empty(&priv->bc_ps_buf)) {
714 bool tx_buff_bc = false;
715
716 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
717 skb_queue_tail(&priv->bc_ps_buf, skb);
718 tx_buff_bc = true;
719 }
720 if (tx_buff_bc) {
721 ieee80211_stop_queues(priv->hw);
722 queue_work(lbtf_wq, &priv->tx_work);
723 }
724 }
725
726 skb = ieee80211_beacon_get(priv->hw, priv->vif);
727
728 if (skb) {
729 lbtf_beacon_set(priv, skb);
730 kfree_skb(skb);
731 }
732}
733EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
734
735static int __init lbtf_init_module(void)
736{
737 lbtf_deb_enter(LBTF_DEB_MAIN);
738 lbtf_wq = alloc_workqueue("libertastf", WQ_MEM_RECLAIM, 0);
739 if (lbtf_wq == NULL) {
740 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
741 return -ENOMEM;
742 }
743 lbtf_deb_leave(LBTF_DEB_MAIN);
744 return 0;
745}
746
747static void __exit lbtf_exit_module(void)
748{
749 lbtf_deb_enter(LBTF_DEB_MAIN);
750 destroy_workqueue(lbtf_wq);
751 lbtf_deb_leave(LBTF_DEB_MAIN);
752}
753
754module_init(lbtf_init_module);
755module_exit(lbtf_exit_module);
756
757MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
758MODULE_AUTHOR("Cozybit Inc.");
759MODULE_LICENSE("GPL");
760
