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23
24#include <linux/kernel.h>
25#include <linux/module.h>
26
27#include "rt2x00.h"
28#include "rt2x00lib.h"
29
30static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
31 struct data_queue *queue,
32 struct sk_buff *frag_skb)
33{
34 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(frag_skb);
35 struct ieee80211_tx_info *rts_info;
36 struct sk_buff *skb;
37 unsigned int data_length;
38 int retval = 0;
39
40 if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
41 data_length = sizeof(struct ieee80211_cts);
42 else
43 data_length = sizeof(struct ieee80211_rts);
44
45 skb = dev_alloc_skb(data_length + rt2x00dev->hw->extra_tx_headroom);
46 if (unlikely(!skb)) {
47 rt2x00_warn(rt2x00dev, "Failed to create RTS/CTS frame\n");
48 return -ENOMEM;
49 }
50
51 skb_reserve(skb, rt2x00dev->hw->extra_tx_headroom);
52 skb_put(skb, data_length);
53
54
55
56
57
58
59
60
61
62
63 memcpy(skb->cb, frag_skb->cb, sizeof(skb->cb));
64 rts_info = IEEE80211_SKB_CB(skb);
65 rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS;
66 rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_CTS_PROTECT;
67
68 if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
69 rts_info->flags |= IEEE80211_TX_CTL_NO_ACK;
70 else
71 rts_info->flags &= ~IEEE80211_TX_CTL_NO_ACK;
72
73
74 rts_info->control.hw_key = NULL;
75
76
77
78
79
80 data_length += rt2x00crypto_tx_overhead(rt2x00dev, skb);
81
82 if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
83 ieee80211_ctstoself_get(rt2x00dev->hw, tx_info->control.vif,
84 frag_skb->data, data_length, tx_info,
85 (struct ieee80211_cts *)(skb->data));
86 else
87 ieee80211_rts_get(rt2x00dev->hw, tx_info->control.vif,
88 frag_skb->data, data_length, tx_info,
89 (struct ieee80211_rts *)(skb->data));
90
91 retval = rt2x00queue_write_tx_frame(queue, skb, NULL, true);
92 if (retval) {
93 dev_kfree_skb_any(skb);
94 rt2x00_warn(rt2x00dev, "Failed to send RTS/CTS frame\n");
95 }
96
97 return retval;
98}
99
100void rt2x00mac_tx(struct ieee80211_hw *hw,
101 struct ieee80211_tx_control *control,
102 struct sk_buff *skb)
103{
104 struct rt2x00_dev *rt2x00dev = hw->priv;
105 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
106 enum data_queue_qid qid = skb_get_queue_mapping(skb);
107 struct data_queue *queue = NULL;
108
109
110
111
112
113
114
115 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
116 goto exit_free_skb;
117
118
119
120
121 if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM &&
122 rt2x00_has_cap_flag(rt2x00dev, REQUIRE_ATIM_QUEUE))
123 qid = QID_ATIM;
124
125 queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
126 if (unlikely(!queue)) {
127 rt2x00_err(rt2x00dev,
128 "Attempt to send packet over invalid queue %d\n"
129 "Please file bug report to %s\n", qid, DRV_PROJECT);
130 goto exit_free_skb;
131 }
132
133
134
135
136
137
138
139
140
141
142 if (!rt2x00dev->ops->hw->set_rts_threshold &&
143 (tx_info->control.rates[0].flags & (IEEE80211_TX_RC_USE_RTS_CTS |
144 IEEE80211_TX_RC_USE_CTS_PROTECT))) {
145 if (rt2x00queue_available(queue) <= 1)
146 goto exit_fail;
147
148 if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb))
149 goto exit_fail;
150 }
151
152 if (unlikely(rt2x00queue_write_tx_frame(queue, skb, control->sta, false)))
153 goto exit_fail;
154
155
156
157
158
159
160 spin_lock(&queue->tx_lock);
161 if (rt2x00queue_threshold(queue))
162 rt2x00queue_pause_queue(queue);
163 spin_unlock(&queue->tx_lock);
164
165 return;
166
167 exit_fail:
168 spin_lock(&queue->tx_lock);
169 rt2x00queue_pause_queue(queue);
170 spin_unlock(&queue->tx_lock);
171 exit_free_skb:
172 ieee80211_free_txskb(hw, skb);
173}
174EXPORT_SYMBOL_GPL(rt2x00mac_tx);
175
176int rt2x00mac_start(struct ieee80211_hw *hw)
177{
178 struct rt2x00_dev *rt2x00dev = hw->priv;
179
180 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
181 return 0;
182
183 return rt2x00lib_start(rt2x00dev);
184}
185EXPORT_SYMBOL_GPL(rt2x00mac_start);
186
187void rt2x00mac_stop(struct ieee80211_hw *hw)
188{
189 struct rt2x00_dev *rt2x00dev = hw->priv;
190
191 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
192 return;
193
194 rt2x00lib_stop(rt2x00dev);
195}
196EXPORT_SYMBOL_GPL(rt2x00mac_stop);
197
198int rt2x00mac_add_interface(struct ieee80211_hw *hw,
199 struct ieee80211_vif *vif)
200{
201 struct rt2x00_dev *rt2x00dev = hw->priv;
202 struct rt2x00_intf *intf = vif_to_intf(vif);
203 struct data_queue *queue = rt2x00dev->bcn;
204 struct queue_entry *entry = NULL;
205 unsigned int i;
206
207
208
209
210
211 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
212 !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
213 return -ENODEV;
214
215
216
217
218
219
220
221 for (i = 0; i < queue->limit; i++) {
222 entry = &queue->entries[i];
223 if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags))
224 break;
225 }
226
227 if (unlikely(i == queue->limit))
228 return -ENOBUFS;
229
230
231
232
233
234
235 if (vif->type == NL80211_IFTYPE_AP)
236 rt2x00dev->intf_ap_count++;
237 else
238 rt2x00dev->intf_sta_count++;
239
240 mutex_init(&intf->beacon_skb_mutex);
241 intf->beacon = entry;
242
243
244
245
246
247
248
249
250
251
252 rt2x00lib_config_intf(rt2x00dev, intf, vif->type,
253 vif->addr, NULL);
254
255
256
257
258
259
260 rt2x00dev->packet_filter = 0;
261
262 return 0;
263}
264EXPORT_SYMBOL_GPL(rt2x00mac_add_interface);
265
266void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
267 struct ieee80211_vif *vif)
268{
269 struct rt2x00_dev *rt2x00dev = hw->priv;
270 struct rt2x00_intf *intf = vif_to_intf(vif);
271
272
273
274
275
276
277 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
278 (vif->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) ||
279 (vif->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count))
280 return;
281
282 if (vif->type == NL80211_IFTYPE_AP)
283 rt2x00dev->intf_ap_count--;
284 else
285 rt2x00dev->intf_sta_count--;
286
287
288
289
290
291 clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags);
292
293
294
295
296
297 rt2x00lib_config_intf(rt2x00dev, intf,
298 NL80211_IFTYPE_UNSPECIFIED, NULL, NULL);
299}
300EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface);
301
302int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
303{
304 struct rt2x00_dev *rt2x00dev = hw->priv;
305 struct ieee80211_conf *conf = &hw->conf;
306
307
308
309
310
311 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
312 return 0;
313
314
315
316
317
318
319
320
321 rt2x00queue_stop_queue(rt2x00dev->rx);
322
323
324 mutex_lock(&rt2x00dev->conf_mutex);
325
326
327
328
329
330 rt2x00lib_config(rt2x00dev, conf, changed);
331
332
333
334
335
336
337
338
339 rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant);
340
341 mutex_unlock(&rt2x00dev->conf_mutex);
342
343
344 rt2x00queue_start_queue(rt2x00dev->rx);
345
346 return 0;
347}
348EXPORT_SYMBOL_GPL(rt2x00mac_config);
349
350void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
351 unsigned int changed_flags,
352 unsigned int *total_flags,
353 u64 multicast)
354{
355 struct rt2x00_dev *rt2x00dev = hw->priv;
356
357
358
359
360
361 *total_flags &=
362 FIF_ALLMULTI |
363 FIF_FCSFAIL |
364 FIF_PLCPFAIL |
365 FIF_CONTROL |
366 FIF_PSPOLL |
367 FIF_OTHER_BSS;
368
369
370
371
372
373
374
375 *total_flags |= FIF_ALLMULTI;
376
377
378
379
380
381
382
383
384 if (!rt2x00_has_cap_control_filters(rt2x00dev)) {
385 if (*total_flags & FIF_CONTROL || *total_flags & FIF_PSPOLL)
386 *total_flags |= FIF_CONTROL | FIF_PSPOLL;
387 }
388 if (!rt2x00_has_cap_control_filter_pspoll(rt2x00dev)) {
389 if (*total_flags & FIF_CONTROL)
390 *total_flags |= FIF_PSPOLL;
391 }
392
393 rt2x00dev->packet_filter = *total_flags;
394
395 rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
396}
397EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);
398
399static void rt2x00mac_set_tim_iter(void *data, u8 *mac,
400 struct ieee80211_vif *vif)
401{
402 struct rt2x00_intf *intf = vif_to_intf(vif);
403
404 if (vif->type != NL80211_IFTYPE_AP &&
405 vif->type != NL80211_IFTYPE_ADHOC &&
406 vif->type != NL80211_IFTYPE_MESH_POINT &&
407 vif->type != NL80211_IFTYPE_WDS)
408 return;
409
410 set_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags);
411}
412
413int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
414 bool set)
415{
416 struct rt2x00_dev *rt2x00dev = hw->priv;
417
418 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
419 return 0;
420
421 ieee80211_iterate_active_interfaces_atomic(
422 rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
423 rt2x00mac_set_tim_iter, rt2x00dev);
424
425
426 ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work);
427 return 0;
428}
429EXPORT_SYMBOL_GPL(rt2x00mac_set_tim);
430
431#ifdef CONFIG_RT2X00_LIB_CRYPTO
432static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len)
433{
434 if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY)
435 memcpy(crypto->key,
436 &key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY],
437 sizeof(crypto->key));
438
439 if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
440 memcpy(crypto->tx_mic,
441 &key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
442 sizeof(crypto->tx_mic));
443
444 if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY)
445 memcpy(crypto->rx_mic,
446 &key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
447 sizeof(crypto->rx_mic));
448}
449
450int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
451 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
452 struct ieee80211_key_conf *key)
453{
454 struct rt2x00_dev *rt2x00dev = hw->priv;
455 int (*set_key) (struct rt2x00_dev *rt2x00dev,
456 struct rt2x00lib_crypto *crypto,
457 struct ieee80211_key_conf *key);
458 struct rt2x00lib_crypto crypto;
459 static const u8 bcast_addr[ETH_ALEN] =
460 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, };
461 struct rt2x00_sta *sta_priv = NULL;
462
463 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
464 return 0;
465
466 if (!rt2x00_has_cap_hw_crypto(rt2x00dev))
467 return -EOPNOTSUPP;
468
469
470
471
472
473 if (vif->type == NL80211_IFTYPE_ADHOC &&
474 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
475 return -EOPNOTSUPP;
476
477 if (key->keylen > 32)
478 return -ENOSPC;
479
480 memset(&crypto, 0, sizeof(crypto));
481
482 crypto.bssidx = rt2x00lib_get_bssidx(rt2x00dev, vif);
483 crypto.cipher = rt2x00crypto_key_to_cipher(key);
484 if (crypto.cipher == CIPHER_NONE)
485 return -EOPNOTSUPP;
486 if (crypto.cipher == CIPHER_TKIP && rt2x00_is_usb(rt2x00dev))
487 return -EOPNOTSUPP;
488
489 crypto.cmd = cmd;
490
491 if (sta) {
492 crypto.address = sta->addr;
493 sta_priv = sta_to_rt2x00_sta(sta);
494 crypto.wcid = sta_priv->wcid;
495 } else
496 crypto.address = bcast_addr;
497
498 if (crypto.cipher == CIPHER_TKIP)
499 memcpy_tkip(&crypto, &key->key[0], key->keylen);
500 else
501 memcpy(crypto.key, &key->key[0], key->keylen);
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518 if (cmd == SET_KEY)
519 key->hw_key_idx = 0;
520
521 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
522 set_key = rt2x00dev->ops->lib->config_pairwise_key;
523 else
524 set_key = rt2x00dev->ops->lib->config_shared_key;
525
526 if (!set_key)
527 return -EOPNOTSUPP;
528
529 return set_key(rt2x00dev, &crypto, key);
530}
531EXPORT_SYMBOL_GPL(rt2x00mac_set_key);
532#endif
533
534int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
535 struct ieee80211_sta *sta)
536{
537 struct rt2x00_dev *rt2x00dev = hw->priv;
538
539 return rt2x00dev->ops->lib->sta_add(rt2x00dev, vif, sta);
540}
541EXPORT_SYMBOL_GPL(rt2x00mac_sta_add);
542
543int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
544 struct ieee80211_sta *sta)
545{
546 struct rt2x00_dev *rt2x00dev = hw->priv;
547
548 return rt2x00dev->ops->lib->sta_remove(rt2x00dev, sta);
549}
550EXPORT_SYMBOL_GPL(rt2x00mac_sta_remove);
551
552void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw,
553 struct ieee80211_vif *vif,
554 const u8 *mac_addr)
555{
556 struct rt2x00_dev *rt2x00dev = hw->priv;
557 set_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
558 rt2x00link_stop_tuner(rt2x00dev);
559}
560EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_start);
561
562void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw,
563 struct ieee80211_vif *vif)
564{
565 struct rt2x00_dev *rt2x00dev = hw->priv;
566 clear_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
567 rt2x00link_start_tuner(rt2x00dev);
568}
569EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_complete);
570
571int rt2x00mac_get_stats(struct ieee80211_hw *hw,
572 struct ieee80211_low_level_stats *stats)
573{
574 struct rt2x00_dev *rt2x00dev = hw->priv;
575
576
577
578
579
580
581 memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats));
582
583 return 0;
584}
585EXPORT_SYMBOL_GPL(rt2x00mac_get_stats);
586
587void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
588 struct ieee80211_vif *vif,
589 struct ieee80211_bss_conf *bss_conf,
590 u32 changes)
591{
592 struct rt2x00_dev *rt2x00dev = hw->priv;
593 struct rt2x00_intf *intf = vif_to_intf(vif);
594
595
596
597
598
599 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
600 return;
601
602
603
604
605 if (changes & BSS_CHANGED_BSSID)
606 rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL,
607 bss_conf->bssid);
608
609
610
611
612 if (changes & BSS_CHANGED_BEACON_ENABLED) {
613 mutex_lock(&intf->beacon_skb_mutex);
614 if (!bss_conf->enable_beacon && intf->enable_beacon) {
615 rt2x00dev->intf_beaconing--;
616 intf->enable_beacon = false;
617
618 if (rt2x00dev->intf_beaconing == 0) {
619
620
621
622
623 rt2x00queue_stop_queue(rt2x00dev->bcn);
624 }
625
626
627
628
629
630 rt2x00queue_clear_beacon(rt2x00dev, vif);
631 } else if (bss_conf->enable_beacon && !intf->enable_beacon) {
632 rt2x00dev->intf_beaconing++;
633 intf->enable_beacon = true;
634
635
636
637
638 if (rt2x00_is_usb(rt2x00dev))
639 rt2x00queue_update_beacon(rt2x00dev, vif);
640
641 if (rt2x00dev->intf_beaconing == 1) {
642
643
644
645
646 rt2x00queue_start_queue(rt2x00dev->bcn);
647 }
648 }
649 mutex_unlock(&intf->beacon_skb_mutex);
650 }
651
652
653
654
655
656
657
658 if (changes & BSS_CHANGED_ASSOC) {
659 rt2x00dev->link.count = 0;
660
661 if (bss_conf->assoc)
662 rt2x00dev->intf_associated++;
663 else
664 rt2x00dev->intf_associated--;
665
666 rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
667
668 clear_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags);
669 }
670
671
672
673
674
675
676 if (changes & BSS_CHANGED_QOS && !bss_conf->qos)
677 set_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags);
678
679
680
681
682
683 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE |
684 BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BASIC_RATES |
685 BSS_CHANGED_BEACON_INT | BSS_CHANGED_HT))
686 rt2x00lib_config_erp(rt2x00dev, intf, bss_conf, changes);
687}
688EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed);
689
690int rt2x00mac_conf_tx(struct ieee80211_hw *hw,
691 struct ieee80211_vif *vif, u16 queue_idx,
692 const struct ieee80211_tx_queue_params *params)
693{
694 struct rt2x00_dev *rt2x00dev = hw->priv;
695 struct data_queue *queue;
696
697 queue = rt2x00queue_get_tx_queue(rt2x00dev, queue_idx);
698 if (unlikely(!queue))
699 return -EINVAL;
700
701
702
703
704
705 if (params->cw_min > 0)
706 queue->cw_min = fls(params->cw_min);
707 else
708 queue->cw_min = 5;
709
710 if (params->cw_max > 0)
711 queue->cw_max = fls(params->cw_max);
712 else
713 queue->cw_max = 10;
714
715 queue->aifs = params->aifs;
716 queue->txop = params->txop;
717
718 rt2x00_dbg(rt2x00dev,
719 "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d\n",
720 queue_idx, queue->cw_min, queue->cw_max, queue->aifs,
721 queue->txop);
722
723 return 0;
724}
725EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx);
726
727void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw)
728{
729 struct rt2x00_dev *rt2x00dev = hw->priv;
730 bool active = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev);
731
732 wiphy_rfkill_set_hw_state(hw->wiphy, !active);
733}
734EXPORT_SYMBOL_GPL(rt2x00mac_rfkill_poll);
735
736void rt2x00mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
737 u32 queues, bool drop)
738{
739 struct rt2x00_dev *rt2x00dev = hw->priv;
740 struct data_queue *queue;
741
742 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
743 return;
744
745 tx_queue_for_each(rt2x00dev, queue)
746 if (!rt2x00queue_empty(queue))
747 rt2x00queue_flush_queue(queue, drop);
748}
749EXPORT_SYMBOL_GPL(rt2x00mac_flush);
750
751int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
752{
753 struct rt2x00_dev *rt2x00dev = hw->priv;
754 struct link_ant *ant = &rt2x00dev->link.ant;
755 struct antenna_setup *def = &rt2x00dev->default_ant;
756 struct antenna_setup setup;
757
758
759
760 if (!tx_ant || (tx_ant & ~3) || !rx_ant || (rx_ant & ~3))
761 return -EINVAL;
762
763
764
765
766 if (ant->flags & ANTENNA_TX_DIVERSITY && tx_ant != 3)
767 ant->flags &= ~ANTENNA_TX_DIVERSITY;
768 if (ant->flags & ANTENNA_RX_DIVERSITY && rx_ant != 3)
769 ant->flags &= ~ANTENNA_RX_DIVERSITY;
770
771
772
773
774
775 if (tx_ant == 3 && def->tx == ANTENNA_SW_DIVERSITY) {
776 tx_ant = ANTENNA_SW_DIVERSITY;
777 ant->flags |= ANTENNA_TX_DIVERSITY;
778 }
779
780 if (rx_ant == 3 && def->rx == ANTENNA_SW_DIVERSITY) {
781 rx_ant = ANTENNA_SW_DIVERSITY;
782 ant->flags |= ANTENNA_RX_DIVERSITY;
783 }
784
785 setup.tx = tx_ant;
786 setup.rx = rx_ant;
787 setup.rx_chain_num = 0;
788 setup.tx_chain_num = 0;
789
790 rt2x00lib_config_antenna(rt2x00dev, setup);
791
792 return 0;
793}
794EXPORT_SYMBOL_GPL(rt2x00mac_set_antenna);
795
796int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
797{
798 struct rt2x00_dev *rt2x00dev = hw->priv;
799 struct link_ant *ant = &rt2x00dev->link.ant;
800 struct antenna_setup *active = &rt2x00dev->link.ant.active;
801
802
803
804 if (ant->flags & ANTENNA_TX_DIVERSITY)
805 *tx_ant = ANTENNA_HW_DIVERSITY;
806 else
807 *tx_ant = active->tx;
808
809 if (ant->flags & ANTENNA_RX_DIVERSITY)
810 *rx_ant = ANTENNA_HW_DIVERSITY;
811 else
812 *rx_ant = active->rx;
813
814 return 0;
815}
816EXPORT_SYMBOL_GPL(rt2x00mac_get_antenna);
817
818void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
819 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
820{
821 struct rt2x00_dev *rt2x00dev = hw->priv;
822 struct data_queue *queue;
823
824 tx_queue_for_each(rt2x00dev, queue) {
825 *tx += queue->length;
826 *tx_max += queue->limit;
827 }
828
829 *rx = rt2x00dev->rx->length;
830 *rx_max = rt2x00dev->rx->limit;
831}
832EXPORT_SYMBOL_GPL(rt2x00mac_get_ringparam);
833
834bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw)
835{
836 struct rt2x00_dev *rt2x00dev = hw->priv;
837 struct data_queue *queue;
838
839 tx_queue_for_each(rt2x00dev, queue) {
840 if (!rt2x00queue_empty(queue))
841 return true;
842 }
843
844 return false;
845}
846EXPORT_SYMBOL_GPL(rt2x00mac_tx_frames_pending);
847