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Merge tag 'drm/tegra/for-5.1-rc5' of git://anongit.freedesktop.org/tegra/linux into...
[thirdparty/kernel/stable.git] / drivers / net / wireless / mediatek / mt76 / mac80211.c
CommitLineData
17f1de56
FF		 1/*
2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16#include <linux/of.h>
17#include "mt76.h"
18
19#define CHAN2G(_idx, _freq) { \
20 .band = NL80211_BAND_2GHZ, \
21 .center_freq = (_freq), \
22 .hw_value = (_idx), \
23 .max_power = 30, \
24}
25
26#define CHAN5G(_idx, _freq) { \
27 .band = NL80211_BAND_5GHZ, \
28 .center_freq = (_freq), \
29 .hw_value = (_idx), \
30 .max_power = 30, \
31}
32
33static const struct ieee80211_channel mt76_channels_2ghz[] = {
34 CHAN2G(1, 2412),
35 CHAN2G(2, 2417),
36 CHAN2G(3, 2422),
37 CHAN2G(4, 2427),
38 CHAN2G(5, 2432),
39 CHAN2G(6, 2437),
40 CHAN2G(7, 2442),
41 CHAN2G(8, 2447),
42 CHAN2G(9, 2452),
43 CHAN2G(10, 2457),
44 CHAN2G(11, 2462),
45 CHAN2G(12, 2467),
46 CHAN2G(13, 2472),
47 CHAN2G(14, 2484),
48};
49
50static const struct ieee80211_channel mt76_channels_5ghz[] = {
51 CHAN5G(36, 5180),
52 CHAN5G(40, 5200),
53 CHAN5G(44, 5220),
54 CHAN5G(48, 5240),
55
56 CHAN5G(52, 5260),
57 CHAN5G(56, 5280),
58 CHAN5G(60, 5300),
59 CHAN5G(64, 5320),
60
61 CHAN5G(100, 5500),
62 CHAN5G(104, 5520),
63 CHAN5G(108, 5540),
64 CHAN5G(112, 5560),
65 CHAN5G(116, 5580),
66 CHAN5G(120, 5600),
67 CHAN5G(124, 5620),
68 CHAN5G(128, 5640),
69 CHAN5G(132, 5660),
70 CHAN5G(136, 5680),
71 CHAN5G(140, 5700),
72
73 CHAN5G(149, 5745),
74 CHAN5G(153, 5765),
75 CHAN5G(157, 5785),
76 CHAN5G(161, 5805),
77 CHAN5G(165, 5825),
78};
79
80static const struct ieee80211_tpt_blink mt76_tpt_blink[] = {
81 { .throughput = 0 * 1024, .blink_time = 334 },
82 { .throughput = 1 * 1024, .blink_time = 260 },
83 { .throughput = 5 * 1024, .blink_time = 220 },
84 { .throughput = 10 * 1024, .blink_time = 190 },
85 { .throughput = 20 * 1024, .blink_time = 170 },
86 { .throughput = 50 * 1024, .blink_time = 150 },
87 { .throughput = 70 * 1024, .blink_time = 130 },
88 { .throughput = 100 * 1024, .blink_time = 110 },
89 { .throughput = 200 * 1024, .blink_time = 80 },
90 { .throughput = 300 * 1024, .blink_time = 50 },
91};
92
93static int mt76_led_init(struct mt76_dev *dev)
94{
95 struct device_node *np = dev->dev->of_node;
96 struct ieee80211_hw *hw = dev->hw;
97 int led_pin;
98
99 if (!dev->led_cdev.brightness_set && !dev->led_cdev.blink_set)
100 return 0;
101
102 snprintf(dev->led_name, sizeof(dev->led_name),
103 "mt76-%s", wiphy_name(hw->wiphy));
104
105 dev->led_cdev.name = dev->led_name;
106 dev->led_cdev.default_trigger =
107 ieee80211_create_tpt_led_trigger(hw,
108 IEEE80211_TPT_LEDTRIG_FL_RADIO,
109 mt76_tpt_blink,
110 ARRAY_SIZE(mt76_tpt_blink));
111
112 np = of_get_child_by_name(np, "led");
113 if (np) {
114 if (!of_property_read_u32(np, "led-sources", &led_pin))
115 dev->led_pin = led_pin;
116 dev->led_al = of_property_read_bool(np, "led-active-low");
117 }
118
119 return devm_led_classdev_register(dev->dev, &dev->led_cdev);
120}
121
551e1ef4
LB		 122static void mt76_init_stream_cap(struct mt76_dev *dev,
123 struct ieee80211_supported_band *sband,
124 bool vht)
125{
126 struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap;
d0ff23c1 127 int i, nstream = hweight8(dev->antenna_mask);
551e1ef4
LB		 128 struct ieee80211_sta_vht_cap *vht_cap;
129 u16 mcs_map = 0;
130
131 if (nstream > 1)
132 ht_cap->cap |= IEEE80211_HT_CAP_TX_STBC;
133 else
134 ht_cap->cap &= ~IEEE80211_HT_CAP_TX_STBC;
135
136 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
137 ht_cap->mcs.rx_mask[i] = i < nstream ? 0xff : 0;
138
139 if (!vht)
140 return;
141
142 vht_cap = &sband->vht_cap;
143 if (nstream > 1)
144 vht_cap->cap |= IEEE80211_VHT_CAP_TXSTBC;
145 else
146 vht_cap->cap &= ~IEEE80211_VHT_CAP_TXSTBC;
147
148 for (i = 0; i < 8; i++) {
149 if (i < nstream)
150 mcs_map |= (IEEE80211_VHT_MCS_SUPPORT_0_9 << (i * 2));
151 else
152 mcs_map |=
153 (IEEE80211_VHT_MCS_NOT_SUPPORTED << (i * 2));
154 }
155 vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
156 vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
157}
158
5ebdc3e0
LB		 159void mt76_set_stream_caps(struct mt76_dev *dev, bool vht)
160{
161 if (dev->cap.has_2ghz)
162 mt76_init_stream_cap(dev, &dev->sband_2g.sband, false);
163 if (dev->cap.has_5ghz)
164 mt76_init_stream_cap(dev, &dev->sband_5g.sband, vht);
165}
166EXPORT_SYMBOL_GPL(mt76_set_stream_caps);
167
17f1de56
FF		 168static int
169mt76_init_sband(struct mt76_dev *dev, struct mt76_sband *msband,
170 const struct ieee80211_channel *chan, int n_chan,
171 struct ieee80211_rate *rates, int n_rates, bool vht)
172{
173 struct ieee80211_supported_band *sband = &msband->sband;
174 struct ieee80211_sta_ht_cap *ht_cap;
175 struct ieee80211_sta_vht_cap *vht_cap;
176 void *chanlist;
17f1de56
FF		 177 int size;
178
179 size = n_chan * sizeof(*chan);
180 chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL);
181 if (!chanlist)
182 return -ENOMEM;
183
a86854d0 184 msband->chan = devm_kcalloc(dev->dev, n_chan, sizeof(*msband->chan),
17f1de56
FF		 185 GFP_KERNEL);
186 if (!msband->chan)
187 return -ENOMEM;
188
189 sband->channels = chanlist;
190 sband->n_channels = n_chan;
191 sband->bitrates = rates;
192 sband->n_bitrates = n_rates;
193 dev->chandef.chan = &sband->channels[0];
194
195 ht_cap = &sband->ht_cap;
196 ht_cap->ht_supported = true;
197 ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
198 IEEE80211_HT_CAP_GRN_FLD |
199 IEEE80211_HT_CAP_SGI_20 |
200 IEEE80211_HT_CAP_SGI_40 |
17f1de56
FF		 201 (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
202
17f1de56
FF		 203 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
204 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
205 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
206
551e1ef4
LB		 207 mt76_init_stream_cap(dev, sband, vht);
208
17f1de56
FF		 209 if (!vht)
210 return 0;
211
212 vht_cap = &sband->vht_cap;
213 vht_cap->vht_supported = true;
17f1de56 214 vht_cap->cap |= IEEE80211_VHT_CAP_RXLDPC |
17f1de56 215 IEEE80211_VHT_CAP_RXSTBC_1 |
49149d3f
FF		 216 IEEE80211_VHT_CAP_SHORT_GI_80 |
217 (3 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
17f1de56
FF		 218
219 return 0;
220}
221
222static int
223mt76_init_sband_2g(struct mt76_dev *dev, struct ieee80211_rate *rates,
224 int n_rates)
225{
226 dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = &dev->sband_2g.sband;
227
228 return mt76_init_sband(dev, &dev->sband_2g,
229 mt76_channels_2ghz,
230 ARRAY_SIZE(mt76_channels_2ghz),
231 rates, n_rates, false);
232}
233
234static int
235mt76_init_sband_5g(struct mt76_dev *dev, struct ieee80211_rate *rates,
236 int n_rates, bool vht)
237{
238 dev->hw->wiphy->bands[NL80211_BAND_5GHZ] = &dev->sband_5g.sband;
239
240 return mt76_init_sband(dev, &dev->sband_5g,
241 mt76_channels_5ghz,
242 ARRAY_SIZE(mt76_channels_5ghz),
243 rates, n_rates, vht);
244}
245
246static void
247mt76_check_sband(struct mt76_dev *dev, int band)
248{
249 struct ieee80211_supported_band *sband = dev->hw->wiphy->bands[band];
250 bool found = false;
251 int i;
252
253 if (!sband)
254 return;
255
256 for (i = 0; i < sband->n_channels; i++) {
257 if (sband->channels[i].flags & IEEE80211_CHAN_DISABLED)
258 continue;
259
260 found = true;
261 break;
262 }
263
264 if (found)
265 return;
266
267 sband->n_channels = 0;
268 dev->hw->wiphy->bands[band] = NULL;
269}
270
a85b590c 271struct mt76_dev *
c0f7b25a
LB		 272mt76_alloc_device(struct device *pdev, unsigned int size,
273 const struct ieee80211_ops *ops,
274 const struct mt76_driver_ops *drv_ops)
a85b590c
FF		 275{
276 struct ieee80211_hw *hw;
277 struct mt76_dev *dev;
278
279 hw = ieee80211_alloc_hw(size, ops);
280 if (!hw)
281 return NULL;
282
283 dev = hw->priv;
284 dev->hw = hw;
c0f7b25a
LB		 285 dev->dev = pdev;
286 dev->drv = drv_ops;
287
a85b590c
FF		 288 spin_lock_init(&dev->rx_lock);
289 spin_lock_init(&dev->lock);
290 spin_lock_init(&dev->cc_lock);
108a4861 291 mutex_init(&dev->mutex);
26e40d4c 292 init_waitqueue_head(&dev->tx_wait);
88046b2c 293 skb_queue_head_init(&dev->status_list);
a85b590c
FF		 294
295 return dev;
296}
297EXPORT_SYMBOL_GPL(mt76_alloc_device);
298
17f1de56
FF		 299int mt76_register_device(struct mt76_dev *dev, bool vht,
300 struct ieee80211_rate *rates, int n_rates)
301{
302 struct ieee80211_hw *hw = dev->hw;
303 struct wiphy *wiphy = hw->wiphy;
304 int ret;
305
306 dev_set_drvdata(dev->dev, dev);
307
17f1de56
FF		 308 INIT_LIST_HEAD(&dev->txwi_cache);
309
310 SET_IEEE80211_DEV(hw, dev->dev);
311 SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
312
17f1de56
FF		 313 wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
314
b37b30af
KE		 315 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
316
24114a5f
LB		 317 wiphy->available_antennas_tx = dev->antenna_mask;
318 wiphy->available_antennas_rx = dev->antenna_mask;
319
17f1de56
FF		 320 hw->txq_data_size = sizeof(struct mt76_txq);
321 hw->max_tx_fragments = 16;
322
323 ieee80211_hw_set(hw, SIGNAL_DBM);
324 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
325 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
326 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
327 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
328 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
329 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
330 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
331 ieee80211_hw_set(hw, TX_AMSDU);
332 ieee80211_hw_set(hw, TX_FRAG_LIST);
333 ieee80211_hw_set(hw, MFP_CAPABLE);
d71ef286 334 ieee80211_hw_set(hw, AP_LINK_PS);
88046b2c 335 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
f545540d 336 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
17f1de56
FF		 337
338 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
339
340 if (dev->cap.has_2ghz) {
341 ret = mt76_init_sband_2g(dev, rates, n_rates);
342 if (ret)
343 return ret;
344 }
345
346 if (dev->cap.has_5ghz) {
347 ret = mt76_init_sband_5g(dev, rates + 4, n_rates - 4, vht);
348 if (ret)
349 return ret;
350 }
351
352 wiphy_read_of_freq_limits(dev->hw->wiphy);
353 mt76_check_sband(dev, NL80211_BAND_2GHZ);
354 mt76_check_sband(dev, NL80211_BAND_5GHZ);
355
b374e868
AB		 356 if (IS_ENABLED(CONFIG_MT76_LEDS)) {
357 ret = mt76_led_init(dev);
358 if (ret)
359 return ret;
360 }
17f1de56
FF		 361
362 return ieee80211_register_hw(hw);
363}
364EXPORT_SYMBOL_GPL(mt76_register_device);
365
366void mt76_unregister_device(struct mt76_dev *dev)
367{
368 struct ieee80211_hw *hw = dev->hw;
369
79d1c94c 370 mt76_tx_status_check(dev, NULL, true);
17f1de56
FF		 371 ieee80211_unregister_hw(hw);
372 mt76_tx_free(dev);
373}
374EXPORT_SYMBOL_GPL(mt76_unregister_device);
375
376void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb)
377{
378 if (!test_bit(MT76_STATE_RUNNING, &dev->state)) {
379 dev_kfree_skb(skb);
380 return;
381 }
382
383 __skb_queue_tail(&dev->rx_skb[q], skb);
384}
385EXPORT_SYMBOL_GPL(mt76_rx);
386
26e40d4c
FF		 387static bool mt76_has_tx_pending(struct mt76_dev *dev)
388{
389 int i;
390
391 for (i = 0; i < ARRAY_SIZE(dev->q_tx); i++) {
392 if (dev->q_tx[i].queued)
393 return true;
394 }
395
396 return false;
397}
398
17f1de56
FF		 399void mt76_set_channel(struct mt76_dev *dev)
400{
401 struct ieee80211_hw *hw = dev->hw;
402 struct cfg80211_chan_def *chandef = &hw->conf.chandef;
403 struct mt76_channel_state *state;
404 bool offchannel = hw->conf.flags & IEEE80211_CONF_OFFCHANNEL;
26e40d4c 405 int timeout = HZ / 5;
17f1de56 406
89bc67e3
FF		 407 if (offchannel)
408 set_bit(MT76_OFFCHANNEL, &dev->state);
409 else
410 clear_bit(MT76_OFFCHANNEL, &dev->state);
411
26e40d4c
FF		 412 wait_event_timeout(dev->tx_wait, !mt76_has_tx_pending(dev), timeout);
413
17f1de56
FF		 414 if (dev->drv->update_survey)
415 dev->drv->update_survey(dev);
416
417 dev->chandef = *chandef;
418
419 if (!offchannel)
420 dev->main_chan = chandef->chan;
421
422 if (chandef->chan != dev->main_chan) {
423 state = mt76_channel_state(dev, chandef->chan);
424 memset(state, 0, sizeof(*state));
425 }
426}
427EXPORT_SYMBOL_GPL(mt76_set_channel);
428
429int mt76_get_survey(struct ieee80211_hw *hw, int idx,
430 struct survey_info *survey)
431{
432 struct mt76_dev *dev = hw->priv;
433 struct mt76_sband *sband;
434 struct ieee80211_channel *chan;
435 struct mt76_channel_state *state;
436 int ret = 0;
437
438 if (idx == 0 && dev->drv->update_survey)
439 dev->drv->update_survey(dev);
440
441 sband = &dev->sband_2g;
442 if (idx >= sband->sband.n_channels) {
443 idx -= sband->sband.n_channels;
444 sband = &dev->sband_5g;
445 }
446
447 if (idx >= sband->sband.n_channels)
448 return -ENOENT;
449
450 chan = &sband->sband.channels[idx];
451 state = mt76_channel_state(dev, chan);
452
453 memset(survey, 0, sizeof(*survey));
454 survey->channel = chan;
455 survey->filled = SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY;
456 if (chan == dev->main_chan)
457 survey->filled |= SURVEY_INFO_IN_USE;
458
459 spin_lock_bh(&dev->cc_lock);
460 survey->time = div_u64(state->cc_active, 1000);
461 survey->time_busy = div_u64(state->cc_busy, 1000);
462 spin_unlock_bh(&dev->cc_lock);
463
464 return ret;
465}
466EXPORT_SYMBOL_GPL(mt76_get_survey);
467
30ce7f44
FF		 468void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid,
469 struct ieee80211_key_conf *key)
470{
471 struct ieee80211_key_seq seq;
472 int i;
473
474 wcid->rx_check_pn = false;
475
476 if (!key)
477 return;
478
479 if (key->cipher == WLAN_CIPHER_SUITE_CCMP)
480 wcid->rx_check_pn = true;
481
482 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
483 ieee80211_get_key_rx_seq(key, i, &seq);
484 memcpy(wcid->rx_key_pn[i], seq.ccmp.pn, sizeof(seq.ccmp.pn));
485 }
486}
487EXPORT_SYMBOL(mt76_wcid_key_setup);
488
82e1dd0f 489struct ieee80211_sta *mt76_rx_convert(struct sk_buff *skb)
4e34249e
FF		 490{
491 struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
492 struct mt76_rx_status mstat;
493
494 mstat = *((struct mt76_rx_status *) skb->cb);
495 memset(status, 0, sizeof(*status));
496
497 status->flag = mstat.flag;
498 status->freq = mstat.freq;
499 status->enc_flags = mstat.enc_flags;
500 status->encoding = mstat.encoding;
501 status->bw = mstat.bw;
502 status->rate_idx = mstat.rate_idx;
503 status->nss = mstat.nss;
504 status->band = mstat.band;
505 status->signal = mstat.signal;
506 status->chains = mstat.chains;
507
508 BUILD_BUG_ON(sizeof(mstat) > sizeof(skb->cb));
509 BUILD_BUG_ON(sizeof(status->chain_signal) != sizeof(mstat.chain_signal));
510 memcpy(status->chain_signal, mstat.chain_signal, sizeof(mstat.chain_signal));
9c68a57b
FF		 511
512 return wcid_to_sta(mstat.wcid);
4e34249e 513}
82e1dd0f 514EXPORT_SYMBOL(mt76_rx_convert);
4e34249e 515
30ce7f44
FF		 516static int
517mt76_check_ccmp_pn(struct sk_buff *skb)
518{
519 struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
520 struct mt76_wcid *wcid = status->wcid;
521 struct ieee80211_hdr *hdr;
522 int ret;
523
524 if (!(status->flag & RX_FLAG_DECRYPTED))
525 return 0;
526
527 if (!wcid || !wcid->rx_check_pn)
528 return 0;
529
530 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
531 /*
532 * Validate the first fragment both here and in mac80211
533 * All further fragments will be validated by mac80211 only.
534 */
535 hdr = (struct ieee80211_hdr *) skb->data;
536 if (ieee80211_is_frag(hdr) &&
537 !ieee80211_is_first_frag(hdr->frame_control))
538 return 0;
539 }
540
541 BUILD_BUG_ON(sizeof(status->iv) != sizeof(wcid->rx_key_pn[0]));
542 ret = memcmp(status->iv, wcid->rx_key_pn[status->tid],
543 sizeof(status->iv));
544 if (ret <= 0)
545 return -EINVAL; /* replay */
546
547 memcpy(wcid->rx_key_pn[status->tid], status->iv, sizeof(status->iv));
548
549 if (status->flag & RX_FLAG_IV_STRIPPED)
550 status->flag |= RX_FLAG_PN_VALIDATED;
551
552 return 0;
553}
554
d71ef286 555static void
ef13edc0 556mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb)
d71ef286
FF		 557{
558 struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
559 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
560 struct ieee80211_sta *sta;
561 struct mt76_wcid *wcid = status->wcid;
562 bool ps;
563
36d91096
FF		 564 if (ieee80211_is_pspoll(hdr->frame_control) && !wcid) {
565 sta = ieee80211_find_sta_by_ifaddr(dev->hw, hdr->addr2, NULL);
566 if (sta)
567 wcid = status->wcid = (struct mt76_wcid *) sta->drv_priv;
568 }
569
d71ef286
FF		 570 if (!wcid || !wcid->sta)
571 return;
572
573 sta = container_of((void *) wcid, struct ieee80211_sta, drv_priv);
574
02e5a769
FF		 575 if (status->signal <= 0)
576 ewma_signal_add(&wcid->rssi, -status->signal);
577
ef13edc0
FF		 578 wcid->inactive_count = 0;
579
d71ef286
FF		 580 if (!test_bit(MT_WCID_FLAG_CHECK_PS, &wcid->flags))
581 return;
582
583 if (ieee80211_is_pspoll(hdr->frame_control)) {
584 ieee80211_sta_pspoll(sta);
585 return;
586 }
587
588 if (ieee80211_has_morefrags(hdr->frame_control) ||
589 !(ieee80211_is_mgmt(hdr->frame_control) ||
590 ieee80211_is_data(hdr->frame_control)))
591 return;
592
593 ps = ieee80211_has_pm(hdr->frame_control);
594
595 if (ps && (ieee80211_is_data_qos(hdr->frame_control) ||
596 ieee80211_is_qos_nullfunc(hdr->frame_control)))
597 ieee80211_sta_uapsd_trigger(sta, status->tid);
598
599 if (!!test_bit(MT_WCID_FLAG_PS, &wcid->flags) == ps)
600 return;
601
11b2a25f 602 if (ps)
d71ef286 603 set_bit(MT_WCID_FLAG_PS, &wcid->flags);
11b2a25f 604 else
d71ef286 605 clear_bit(MT_WCID_FLAG_PS, &wcid->flags);
d71ef286 606
d71ef286 607 dev->drv->sta_ps(dev, sta, ps);
9f67c277 608 ieee80211_sta_ps_transition(sta, ps);
d71ef286
FF		 609}
610
9d9d738b 611void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,
81e850ef 612 struct napi_struct *napi)
17f1de56 613{
9c68a57b 614 struct ieee80211_sta *sta;
9d9d738b
FF		 615 struct sk_buff *skb;
616
c3d7c82a 617 spin_lock(&dev->rx_lock);
9d9d738b 618 while ((skb = __skb_dequeue(frames)) != NULL) {
30ce7f44
FF		 619 if (mt76_check_ccmp_pn(skb)) {
620 dev_kfree_skb(skb);
621 continue;
622 }
623
9d9d738b
FF		 624 sta = mt76_rx_convert(skb);
625 ieee80211_rx_napi(dev->hw, sta, skb, napi);
626 }
c3d7c82a 627 spin_unlock(&dev->rx_lock);
9d9d738b
FF		 628}
629
81e850ef
LB		 630void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q,
631 struct napi_struct *napi)
9d9d738b 632{
aee5b8cf 633 struct sk_buff_head frames;
17f1de56
FF		 634 struct sk_buff *skb;
635
aee5b8cf
FF		 636 __skb_queue_head_init(&frames);
637
d71ef286 638 while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL) {
ef13edc0 639 mt76_check_sta(dev, skb);
aee5b8cf 640 mt76_rx_aggr_reorder(skb, &frames);
d71ef286 641 }
aee5b8cf 642
81e850ef 643 mt76_rx_complete(dev, &frames, napi);
17f1de56 644}
81e850ef 645EXPORT_SYMBOL_GPL(mt76_rx_poll_complete);
723b90dc 646
e28487ea
FF		 647static int
648mt76_sta_add(struct mt76_dev *dev, struct ieee80211_vif *vif,
649 struct ieee80211_sta *sta)
650{
651 struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
652 int ret;
653 int i;
654
655 mutex_lock(&dev->mutex);
656
657 ret = dev->drv->sta_add(dev, vif, sta);
658 if (ret)
659 goto out;
660
661 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
662 struct mt76_txq *mtxq;
663
664 if (!sta->txq[i])
665 continue;
666
667 mtxq = (struct mt76_txq *)sta->txq[i]->drv_priv;
668 mtxq->wcid = wcid;
669
670 mt76_txq_init(dev, sta->txq[i]);
671 }
672
ef13edc0 673 ewma_signal_init(&wcid->rssi);
e28487ea
FF		 674 rcu_assign_pointer(dev->wcid[wcid->idx], wcid);
675
676out:
677 mutex_unlock(&dev->mutex);
678
679 return ret;
680}
681
13f61dfc
LB		 682void __mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif,
683 struct ieee80211_sta *sta)
723b90dc
FF		 684{
685 struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
13f61dfc 686 int i, idx = wcid->idx;
723b90dc
FF		 687
688 rcu_assign_pointer(dev->wcid[idx], NULL);
689 synchronize_rcu();
690
e28487ea
FF		 691 if (dev->drv->sta_remove)
692 dev->drv->sta_remove(dev, vif, sta);
693
723b90dc
FF		 694 mt76_tx_status_check(dev, wcid, true);
695 for (i = 0; i < ARRAY_SIZE(sta->txq); i++)
696 mt76_txq_remove(dev, sta->txq[i]);
697 mt76_wcid_free(dev->wcid_mask, idx);
13f61dfc
LB		 698}
699EXPORT_SYMBOL_GPL(__mt76_sta_remove);
e28487ea 700
13f61dfc
LB		 701static void
702mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif,
703 struct ieee80211_sta *sta)
704{
705 mutex_lock(&dev->mutex);
706 __mt76_sta_remove(dev, vif, sta);
723b90dc
FF		 707 mutex_unlock(&dev->mutex);
708}
e28487ea
FF		 709
710int mt76_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
711 struct ieee80211_sta *sta,
712 enum ieee80211_sta_state old_state,
713 enum ieee80211_sta_state new_state)
714{
715 struct mt76_dev *dev = hw->priv;
716
717 if (old_state == IEEE80211_STA_NOTEXIST &&
718 new_state == IEEE80211_STA_NONE)
719 return mt76_sta_add(dev, vif, sta);
720
9c193de5
FF		 721 if (old_state == IEEE80211_STA_AUTH &&
722 new_state == IEEE80211_STA_ASSOC &&
723 dev->drv->sta_assoc)
724 dev->drv->sta_assoc(dev, vif, sta);
725
e28487ea
FF		 726 if (old_state == IEEE80211_STA_NONE &&
727 new_state == IEEE80211_STA_NOTEXIST)
728 mt76_sta_remove(dev, vif, sta);
729
730 return 0;
731}
732EXPORT_SYMBOL_GPL(mt76_sta_state);
9313faac
FF		 733
734int mt76_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
735 int *dbm)
736{
737 struct mt76_dev *dev = hw->priv;
d0ff23c1 738 int n_chains = hweight8(dev->antenna_mask);
9313faac
FF		 739
740 *dbm = dev->txpower_cur / 2;
741
742 /* convert from per-chain power to combined
743 * output on 2x2 devices
744 */
745 if (n_chains > 1)
746 *dbm += 3;
747
748 return 0;
749}
750EXPORT_SYMBOL_GPL(mt76_get_txpower);
e7173858
FF		 751
752static void
753__mt76_csa_finish(void *priv, u8 *mac, struct ieee80211_vif *vif)
754{
755 if (vif->csa_active && ieee80211_csa_is_complete(vif))
756 ieee80211_csa_finish(vif);
757}
758
759void mt76_csa_finish(struct mt76_dev *dev)
760{
761 if (!dev->csa_complete)
762 return;
763
764 ieee80211_iterate_active_interfaces_atomic(dev->hw,
765 IEEE80211_IFACE_ITER_RESUME_ALL,
766 __mt76_csa_finish, dev);
767
768 dev->csa_complete = 0;
769}
770EXPORT_SYMBOL_GPL(mt76_csa_finish);
771
772static void
773__mt76_csa_check(void *priv, u8 *mac, struct ieee80211_vif *vif)
774{
775 struct mt76_dev *dev = priv;
776
777 if (!vif->csa_active)
778 return;
779
780 dev->csa_complete |= ieee80211_csa_is_complete(vif);
781}
782
783void mt76_csa_check(struct mt76_dev *dev)
784{
785 ieee80211_iterate_active_interfaces_atomic(dev->hw,
786 IEEE80211_IFACE_ITER_RESUME_ALL,
787 __mt76_csa_check, dev);
788}
789EXPORT_SYMBOL_GPL(mt76_csa_check);
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git