2 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
3 <http://rt2x00.serialmonkey.com>
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
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, see <http://www.gnu.org/licenses/>.
21 Abstract: rt2x00 generic mac80211 routines.
24 #include <linux/kernel.h>
25 #include <linux/module.h>
28 #include "rt2x00lib.h"
30 static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
31 struct data_queue *queue,
32 struct sk_buff *frag_skb)
34 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(frag_skb);
35 struct ieee80211_tx_info *rts_info;
37 unsigned int data_length;
40 if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
41 data_length = sizeof(struct ieee80211_cts);
43 data_length = sizeof(struct ieee80211_rts);
45 skb = dev_alloc_skb(data_length + rt2x00dev->hw->extra_tx_headroom);
47 rt2x00_warn(rt2x00dev, "Failed to create RTS/CTS frame\n");
51 skb_reserve(skb, rt2x00dev->hw->extra_tx_headroom);
52 skb_put(skb, data_length);
55 * Copy TX information over from original frame to
56 * RTS/CTS frame. Note that we set the no encryption flag
57 * since we don't want this frame to be encrypted.
58 * RTS frames should be acked, while CTS-to-self frames
59 * should not. The ready for TX flag is cleared to prevent
60 * it being automatically send when the descriptor is
61 * written to the hardware.
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;
68 if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
69 rts_info->flags |= IEEE80211_TX_CTL_NO_ACK;
71 rts_info->flags &= ~IEEE80211_TX_CTL_NO_ACK;
73 /* Disable hardware encryption */
74 rts_info->control.hw_key = NULL;
77 * RTS/CTS frame should use the length of the frame plus any
78 * encryption overhead that will be added by the hardware.
80 data_length += rt2x00crypto_tx_overhead(rt2x00dev, skb);
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));
87 ieee80211_rts_get(rt2x00dev->hw, tx_info->control.vif,
88 frag_skb->data, data_length, tx_info,
89 (struct ieee80211_rts *)(skb->data));
91 retval = rt2x00queue_write_tx_frame(queue, skb, NULL, true);
93 dev_kfree_skb_any(skb);
94 rt2x00_warn(rt2x00dev, "Failed to send RTS/CTS frame\n");
100 void rt2x00mac_tx(struct ieee80211_hw *hw,
101 struct ieee80211_tx_control *control,
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;
110 * Mac80211 might be calling this function while we are trying
111 * to remove the device or perhaps suspending it.
112 * Note that we can only stop the TX queues inside the TX path
113 * due to possible race conditions in mac80211.
115 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
119 * Use the ATIM queue if appropriate and present.
121 if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM &&
122 rt2x00_has_cap_flag(rt2x00dev, REQUIRE_ATIM_QUEUE))
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);
134 * If CTS/RTS is required. create and queue that frame first.
135 * Make sure we have at least enough entries available to send
136 * this CTS/RTS frame as well as the data frame.
137 * Note that when the driver has set the set_rts_threshold()
138 * callback function it doesn't need software generation of
139 * either RTS or CTS-to-self frame and handles everything
140 * inside the hardware.
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) {
147 * Recheck for full queue under lock to avoid race
148 * conditions with rt2x00lib_txdone().
150 spin_lock(&queue->tx_lock);
151 if (rt2x00queue_threshold(queue))
152 rt2x00queue_pause_queue(queue);
153 spin_unlock(&queue->tx_lock);
158 if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb))
162 if (unlikely(rt2x00queue_write_tx_frame(queue, skb, control->sta, false)))
166 * Pausing queue has to be serialized with rt2x00lib_txdone(). Note
167 * we should not use spin_lock_bh variant as bottom halve was already
168 * disabled before ieee80211_xmit() call.
170 spin_lock(&queue->tx_lock);
171 if (rt2x00queue_threshold(queue))
172 rt2x00queue_pause_queue(queue);
173 spin_unlock(&queue->tx_lock);
178 ieee80211_free_txskb(hw, skb);
180 EXPORT_SYMBOL_GPL(rt2x00mac_tx);
182 int rt2x00mac_start(struct ieee80211_hw *hw)
184 struct rt2x00_dev *rt2x00dev = hw->priv;
186 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
189 return rt2x00lib_start(rt2x00dev);
191 EXPORT_SYMBOL_GPL(rt2x00mac_start);
193 void rt2x00mac_stop(struct ieee80211_hw *hw)
195 struct rt2x00_dev *rt2x00dev = hw->priv;
197 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
200 rt2x00lib_stop(rt2x00dev);
202 EXPORT_SYMBOL_GPL(rt2x00mac_stop);
204 int rt2x00mac_add_interface(struct ieee80211_hw *hw,
205 struct ieee80211_vif *vif)
207 struct rt2x00_dev *rt2x00dev = hw->priv;
208 struct rt2x00_intf *intf = vif_to_intf(vif);
209 struct data_queue *queue = rt2x00dev->bcn;
210 struct queue_entry *entry = NULL;
214 * Don't allow interfaces to be added
215 * the device has disappeared.
217 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
218 !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
222 * Loop through all beacon queues to find a free
223 * entry. Since there are as much beacon entries
224 * as the maximum interfaces, this search shouldn't
227 for (i = 0; i < queue->limit; i++) {
228 entry = &queue->entries[i];
229 if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags))
233 if (unlikely(i == queue->limit))
237 * We are now absolutely sure the interface can be created,
238 * increase interface count and start initialization.
241 if (vif->type == NL80211_IFTYPE_AP)
242 rt2x00dev->intf_ap_count++;
244 rt2x00dev->intf_sta_count++;
246 mutex_init(&intf->beacon_skb_mutex);
247 intf->beacon = entry;
250 * The MAC address must be configured after the device
251 * has been initialized. Otherwise the device can reset
253 * The BSSID address must only be configured in AP mode,
254 * however we should not send an empty BSSID address for
255 * STA interfaces at this time, since this can cause
256 * invalid behavior in the device.
258 rt2x00lib_config_intf(rt2x00dev, intf, vif->type,
262 * Some filters depend on the current working mode. We can force
263 * an update during the next configure_filter() run by mac80211 by
264 * resetting the current packet_filter state.
266 rt2x00dev->packet_filter = 0;
270 EXPORT_SYMBOL_GPL(rt2x00mac_add_interface);
272 void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
273 struct ieee80211_vif *vif)
275 struct rt2x00_dev *rt2x00dev = hw->priv;
276 struct rt2x00_intf *intf = vif_to_intf(vif);
279 * Don't allow interfaces to be remove while
280 * either the device has disappeared or when
281 * no interface is present.
283 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
284 (vif->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) ||
285 (vif->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count))
288 if (vif->type == NL80211_IFTYPE_AP)
289 rt2x00dev->intf_ap_count--;
291 rt2x00dev->intf_sta_count--;
294 * Release beacon entry so it is available for
295 * new interfaces again.
297 clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags);
300 * Make sure the bssid and mac address registers
301 * are cleared to prevent false ACKing of frames.
303 rt2x00lib_config_intf(rt2x00dev, intf,
304 NL80211_IFTYPE_UNSPECIFIED, NULL, NULL);
306 EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface);
308 int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
310 struct rt2x00_dev *rt2x00dev = hw->priv;
311 struct ieee80211_conf *conf = &hw->conf;
314 * mac80211 might be calling this function while we are trying
315 * to remove the device or perhaps suspending it.
317 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
321 * Some configuration parameters (e.g. channel and antenna values) can
322 * only be set when the radio is enabled, but do require the RX to
323 * be off. During this period we should keep link tuning enabled,
324 * if for any reason the link tuner must be reset, this will be
325 * handled by rt2x00lib_config().
327 rt2x00queue_stop_queue(rt2x00dev->rx);
329 /* Do not race with with link tuner. */
330 mutex_lock(&rt2x00dev->conf_mutex);
333 * When we've just turned on the radio, we want to reprogram
334 * everything to ensure a consistent state
336 rt2x00lib_config(rt2x00dev, conf, changed);
339 * After the radio has been enabled we need to configure
340 * the antenna to the default settings. rt2x00lib_config_antenna()
341 * should determine if any action should be taken based on
342 * checking if diversity has been enabled or no antenna changes
343 * have been made since the last configuration change.
345 rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant);
347 mutex_unlock(&rt2x00dev->conf_mutex);
349 /* Turn RX back on */
350 rt2x00queue_start_queue(rt2x00dev->rx);
354 EXPORT_SYMBOL_GPL(rt2x00mac_config);
356 void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
357 unsigned int changed_flags,
358 unsigned int *total_flags,
361 struct rt2x00_dev *rt2x00dev = hw->priv;
364 * Mask off any flags we are going to ignore
365 * from the total_flags field.
376 * Apply some rules to the filters:
377 * - Some filters imply different filters to be set.
378 * - Some things we can't filter out at all.
379 * - Multicast filter seems to kill broadcast traffic so never use it.
381 *total_flags |= FIF_ALLMULTI;
384 * If the device has a single filter for all control frames,
385 * FIF_CONTROL and FIF_PSPOLL flags imply each other.
386 * And if the device has more than one filter for control frames
387 * of different types, but has no a separate filter for PS Poll frames,
388 * FIF_CONTROL flag implies FIF_PSPOLL.
390 if (!rt2x00_has_cap_control_filters(rt2x00dev)) {
391 if (*total_flags & FIF_CONTROL || *total_flags & FIF_PSPOLL)
392 *total_flags |= FIF_CONTROL | FIF_PSPOLL;
394 if (!rt2x00_has_cap_control_filter_pspoll(rt2x00dev)) {
395 if (*total_flags & FIF_CONTROL)
396 *total_flags |= FIF_PSPOLL;
399 rt2x00dev->packet_filter = *total_flags;
401 rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags);
403 EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter);
405 static void rt2x00mac_set_tim_iter(void *data, u8 *mac,
406 struct ieee80211_vif *vif)
408 struct rt2x00_intf *intf = vif_to_intf(vif);
410 if (vif->type != NL80211_IFTYPE_AP &&
411 vif->type != NL80211_IFTYPE_ADHOC &&
412 vif->type != NL80211_IFTYPE_MESH_POINT &&
413 vif->type != NL80211_IFTYPE_WDS)
416 set_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags);
419 int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
422 struct rt2x00_dev *rt2x00dev = hw->priv;
424 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
427 ieee80211_iterate_active_interfaces_atomic(
428 rt2x00dev->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
429 rt2x00mac_set_tim_iter, rt2x00dev);
431 /* queue work to upodate the beacon template */
432 ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work);
435 EXPORT_SYMBOL_GPL(rt2x00mac_set_tim);
437 #ifdef CONFIG_RT2X00_LIB_CRYPTO
438 static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len)
440 if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY)
442 &key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY],
443 sizeof(crypto->key));
445 if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
446 memcpy(crypto->tx_mic,
447 &key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
448 sizeof(crypto->tx_mic));
450 if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY)
451 memcpy(crypto->rx_mic,
452 &key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
453 sizeof(crypto->rx_mic));
456 int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
457 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
458 struct ieee80211_key_conf *key)
460 struct rt2x00_dev *rt2x00dev = hw->priv;
461 int (*set_key) (struct rt2x00_dev *rt2x00dev,
462 struct rt2x00lib_crypto *crypto,
463 struct ieee80211_key_conf *key);
464 struct rt2x00lib_crypto crypto;
465 static const u8 bcast_addr[ETH_ALEN] =
466 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, };
467 struct rt2x00_sta *sta_priv = NULL;
469 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
472 if (!rt2x00_has_cap_hw_crypto(rt2x00dev))
476 * To support IBSS RSN, don't program group keys in IBSS, the
477 * hardware will then not attempt to decrypt the frames.
479 if (vif->type == NL80211_IFTYPE_ADHOC &&
480 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
483 if (key->keylen > 32)
486 memset(&crypto, 0, sizeof(crypto));
488 crypto.bssidx = rt2x00lib_get_bssidx(rt2x00dev, vif);
489 crypto.cipher = rt2x00crypto_key_to_cipher(key);
490 if (crypto.cipher == CIPHER_NONE)
492 if (crypto.cipher == CIPHER_TKIP && rt2x00_is_usb(rt2x00dev))
498 crypto.address = sta->addr;
499 sta_priv = sta_to_rt2x00_sta(sta);
500 crypto.wcid = sta_priv->wcid;
502 crypto.address = bcast_addr;
504 if (crypto.cipher == CIPHER_TKIP)
505 memcpy_tkip(&crypto, &key->key[0], key->keylen);
507 memcpy(crypto.key, &key->key[0], key->keylen);
509 * Each BSS has a maximum of 4 shared keys.
510 * Shared key index values:
518 * Both pairwise as shared key indeces are determined by
519 * driver. This is required because the hardware requires
520 * keys to be assigned in correct order (When key 1 is
521 * provided but key 0 is not, then the key is not found
522 * by the hardware during RX).
527 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
528 set_key = rt2x00dev->ops->lib->config_pairwise_key;
530 set_key = rt2x00dev->ops->lib->config_shared_key;
535 return set_key(rt2x00dev, &crypto, key);
537 EXPORT_SYMBOL_GPL(rt2x00mac_set_key);
538 #endif /* CONFIG_RT2X00_LIB_CRYPTO */
540 int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
541 struct ieee80211_sta *sta)
543 struct rt2x00_dev *rt2x00dev = hw->priv;
545 return rt2x00dev->ops->lib->sta_add(rt2x00dev, vif, sta);
547 EXPORT_SYMBOL_GPL(rt2x00mac_sta_add);
549 int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
550 struct ieee80211_sta *sta)
552 struct rt2x00_dev *rt2x00dev = hw->priv;
554 return rt2x00dev->ops->lib->sta_remove(rt2x00dev, sta);
556 EXPORT_SYMBOL_GPL(rt2x00mac_sta_remove);
558 void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw,
559 struct ieee80211_vif *vif,
562 struct rt2x00_dev *rt2x00dev = hw->priv;
563 set_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
564 rt2x00link_stop_tuner(rt2x00dev);
566 EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_start);
568 void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw,
569 struct ieee80211_vif *vif)
571 struct rt2x00_dev *rt2x00dev = hw->priv;
572 clear_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags);
573 rt2x00link_start_tuner(rt2x00dev);
575 EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_complete);
577 int rt2x00mac_get_stats(struct ieee80211_hw *hw,
578 struct ieee80211_low_level_stats *stats)
580 struct rt2x00_dev *rt2x00dev = hw->priv;
583 * The dot11ACKFailureCount, dot11RTSFailureCount and
584 * dot11RTSSuccessCount are updated in interrupt time.
585 * dot11FCSErrorCount is updated in the link tuner.
587 memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats));
591 EXPORT_SYMBOL_GPL(rt2x00mac_get_stats);
593 void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
594 struct ieee80211_vif *vif,
595 struct ieee80211_bss_conf *bss_conf,
598 struct rt2x00_dev *rt2x00dev = hw->priv;
599 struct rt2x00_intf *intf = vif_to_intf(vif);
602 * mac80211 might be calling this function while we are trying
603 * to remove the device or perhaps suspending it.
605 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
611 if (changes & BSS_CHANGED_BSSID)
612 rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL,
616 * Start/stop beaconing.
618 if (changes & BSS_CHANGED_BEACON_ENABLED) {
619 mutex_lock(&intf->beacon_skb_mutex);
620 if (!bss_conf->enable_beacon && intf->enable_beacon) {
621 rt2x00dev->intf_beaconing--;
622 intf->enable_beacon = false;
624 if (rt2x00dev->intf_beaconing == 0) {
626 * Last beaconing interface disabled
627 * -> stop beacon queue.
629 rt2x00queue_stop_queue(rt2x00dev->bcn);
632 * Clear beacon in the H/W for this vif. This is needed
633 * to disable beaconing on this particular interface
634 * and keep it running on other interfaces.
636 rt2x00queue_clear_beacon(rt2x00dev, vif);
637 } else if (bss_conf->enable_beacon && !intf->enable_beacon) {
638 rt2x00dev->intf_beaconing++;
639 intf->enable_beacon = true;
641 * Upload beacon to the H/W. This is only required on
642 * USB devices. PCI devices fetch beacons periodically.
644 if (rt2x00_is_usb(rt2x00dev))
645 rt2x00queue_update_beacon(rt2x00dev, vif);
647 if (rt2x00dev->intf_beaconing == 1) {
649 * First beaconing interface enabled
650 * -> start beacon queue.
652 rt2x00queue_start_queue(rt2x00dev->bcn);
655 mutex_unlock(&intf->beacon_skb_mutex);
659 * When the association status has changed we must reset the link
660 * tuner counter. This is because some drivers determine if they
661 * should perform link tuning based on the number of seconds
662 * while associated or not associated.
664 if (changes & BSS_CHANGED_ASSOC) {
665 rt2x00dev->link.count = 0;
668 rt2x00dev->intf_associated++;
670 rt2x00dev->intf_associated--;
672 rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
676 * When the erp information has changed, we should perform
677 * additional configuration steps. For all other changes we are done.
679 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE |
680 BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BASIC_RATES |
681 BSS_CHANGED_BEACON_INT | BSS_CHANGED_HT))
682 rt2x00lib_config_erp(rt2x00dev, intf, bss_conf, changes);
684 EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed);
686 int rt2x00mac_conf_tx(struct ieee80211_hw *hw,
687 struct ieee80211_vif *vif, u16 queue_idx,
688 const struct ieee80211_tx_queue_params *params)
690 struct rt2x00_dev *rt2x00dev = hw->priv;
691 struct data_queue *queue;
693 queue = rt2x00queue_get_tx_queue(rt2x00dev, queue_idx);
694 if (unlikely(!queue))
698 * The passed variables are stored as real value ((2^n)-1).
699 * Ralink registers require to know the bit number 'n'.
701 if (params->cw_min > 0)
702 queue->cw_min = fls(params->cw_min);
704 queue->cw_min = 5; /* cw_min: 2^5 = 32. */
706 if (params->cw_max > 0)
707 queue->cw_max = fls(params->cw_max);
709 queue->cw_max = 10; /* cw_min: 2^10 = 1024. */
711 queue->aifs = params->aifs;
712 queue->txop = params->txop;
714 rt2x00_dbg(rt2x00dev,
715 "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d\n",
716 queue_idx, queue->cw_min, queue->cw_max, queue->aifs,
721 EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx);
723 void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw)
725 struct rt2x00_dev *rt2x00dev = hw->priv;
726 bool active = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev);
728 wiphy_rfkill_set_hw_state(hw->wiphy, !active);
730 EXPORT_SYMBOL_GPL(rt2x00mac_rfkill_poll);
732 void rt2x00mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
733 u32 queues, bool drop)
735 struct rt2x00_dev *rt2x00dev = hw->priv;
736 struct data_queue *queue;
738 if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
741 tx_queue_for_each(rt2x00dev, queue)
742 if (!rt2x00queue_empty(queue))
743 rt2x00queue_flush_queue(queue, drop);
745 EXPORT_SYMBOL_GPL(rt2x00mac_flush);
747 int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
749 struct rt2x00_dev *rt2x00dev = hw->priv;
750 struct link_ant *ant = &rt2x00dev->link.ant;
751 struct antenna_setup *def = &rt2x00dev->default_ant;
752 struct antenna_setup setup;
754 // The antenna value is not supposed to be 0,
755 // or exceed the maximum number of antenna's.
756 if (!tx_ant || (tx_ant & ~3) || !rx_ant || (rx_ant & ~3))
759 // When the client tried to configure the antenna to or from
760 // diversity mode, we must reset the default antenna as well
761 // as that controls the diversity switch.
762 if (ant->flags & ANTENNA_TX_DIVERSITY && tx_ant != 3)
763 ant->flags &= ~ANTENNA_TX_DIVERSITY;
764 if (ant->flags & ANTENNA_RX_DIVERSITY && rx_ant != 3)
765 ant->flags &= ~ANTENNA_RX_DIVERSITY;
767 // If diversity is being enabled, check if we need hardware
768 // or software diversity. In the latter case, reset the value,
769 // and make sure we update the antenna flags to have the
770 // link tuner pick up the diversity tuning.
771 if (tx_ant == 3 && def->tx == ANTENNA_SW_DIVERSITY) {
772 tx_ant = ANTENNA_SW_DIVERSITY;
773 ant->flags |= ANTENNA_TX_DIVERSITY;
776 if (rx_ant == 3 && def->rx == ANTENNA_SW_DIVERSITY) {
777 rx_ant = ANTENNA_SW_DIVERSITY;
778 ant->flags |= ANTENNA_RX_DIVERSITY;
783 setup.rx_chain_num = 0;
784 setup.tx_chain_num = 0;
786 rt2x00lib_config_antenna(rt2x00dev, setup);
790 EXPORT_SYMBOL_GPL(rt2x00mac_set_antenna);
792 int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
794 struct rt2x00_dev *rt2x00dev = hw->priv;
795 struct link_ant *ant = &rt2x00dev->link.ant;
796 struct antenna_setup *active = &rt2x00dev->link.ant.active;
798 // When software diversity is active, we must report this to the
799 // client and not the current active antenna state.
800 if (ant->flags & ANTENNA_TX_DIVERSITY)
801 *tx_ant = ANTENNA_HW_DIVERSITY;
803 *tx_ant = active->tx;
805 if (ant->flags & ANTENNA_RX_DIVERSITY)
806 *rx_ant = ANTENNA_HW_DIVERSITY;
808 *rx_ant = active->rx;
812 EXPORT_SYMBOL_GPL(rt2x00mac_get_antenna);
814 void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
815 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
817 struct rt2x00_dev *rt2x00dev = hw->priv;
818 struct data_queue *queue;
820 tx_queue_for_each(rt2x00dev, queue) {
821 *tx += queue->length;
822 *tx_max += queue->limit;
825 *rx = rt2x00dev->rx->length;
826 *rx_max = rt2x00dev->rx->limit;
828 EXPORT_SYMBOL_GPL(rt2x00mac_get_ringparam);
830 bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw)
832 struct rt2x00_dev *rt2x00dev = hw->priv;
833 struct data_queue *queue;
835 tx_queue_for_each(rt2x00dev, queue) {
836 if (!rt2x00queue_empty(queue))
842 EXPORT_SYMBOL_GPL(rt2x00mac_tx_frames_pending);