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12#include <linux/ieee80211.h>
13#include <linux/export.h>
14#include <net/mac80211.h>
15#include "ieee80211_i.h"
16#include "rate.h"
17
18
19static void __check_vhtcap_disable(struct ieee80211_sub_if_data *sdata,
20 struct ieee80211_sta_vht_cap *vht_cap,
21 u32 flag)
22{
23 __le32 le_flag = cpu_to_le32(flag);
24
25 if (sdata->u.mgd.vht_capa_mask.vht_cap_info & le_flag &&
26 !(sdata->u.mgd.vht_capa.vht_cap_info & le_flag))
27 vht_cap->cap &= ~flag;
28}
29
30void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
31 struct ieee80211_sta_vht_cap *vht_cap)
32{
33 int i;
34 u16 rxmcs_mask, rxmcs_cap, rxmcs_n, txmcs_mask, txmcs_cap, txmcs_n;
35
36 if (!vht_cap->vht_supported)
37 return;
38
39 if (sdata->vif.type != NL80211_IFTYPE_STATION)
40 return;
41
42 __check_vhtcap_disable(sdata, vht_cap,
43 IEEE80211_VHT_CAP_RXLDPC);
44 __check_vhtcap_disable(sdata, vht_cap,
45 IEEE80211_VHT_CAP_SHORT_GI_80);
46 __check_vhtcap_disable(sdata, vht_cap,
47 IEEE80211_VHT_CAP_SHORT_GI_160);
48 __check_vhtcap_disable(sdata, vht_cap,
49 IEEE80211_VHT_CAP_TXSTBC);
50 __check_vhtcap_disable(sdata, vht_cap,
51 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
52 __check_vhtcap_disable(sdata, vht_cap,
53 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
54 __check_vhtcap_disable(sdata, vht_cap,
55 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN);
56 __check_vhtcap_disable(sdata, vht_cap,
57 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN);
58
59
60 if (sdata->u.mgd.vht_capa_mask.vht_cap_info &
61 cpu_to_le32(IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK)) {
62 u32 cap, n;
63
64 n = le32_to_cpu(sdata->u.mgd.vht_capa.vht_cap_info) &
65 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
66 n >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
67 cap = vht_cap->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
68 cap >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
69
70 if (n < cap) {
71 vht_cap->cap &=
72 ~IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
73 vht_cap->cap |=
74 n << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
75 }
76 }
77
78
79 rxmcs_mask =
80 le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.rx_mcs_map);
81 rxmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.rx_mcs_map);
82 rxmcs_n &= rxmcs_mask;
83 rxmcs_cap = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
84
85 txmcs_mask =
86 le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.tx_mcs_map);
87 txmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.tx_mcs_map);
88 txmcs_n &= txmcs_mask;
89 txmcs_cap = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);
90 for (i = 0; i < 8; i++) {
91 u8 m, n, c;
92
93 m = (rxmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
94 n = (rxmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
95 c = (rxmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
96
97 if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) ||
98 n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) {
99 rxmcs_cap &= ~(3 << 2*i);
100 rxmcs_cap |= (rxmcs_n & (3 << 2*i));
101 }
102
103 m = (txmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
104 n = (txmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
105 c = (txmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
106
107 if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) ||
108 n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) {
109 txmcs_cap &= ~(3 << 2*i);
110 txmcs_cap |= (txmcs_n & (3 << 2*i));
111 }
112 }
113 vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(rxmcs_cap);
114 vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(txmcs_cap);
115}
116
117void
118ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
119 struct ieee80211_supported_band *sband,
120 const struct ieee80211_vht_cap *vht_cap_ie,
121 struct sta_info *sta)
122{
123 struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
124 struct ieee80211_sta_vht_cap own_cap;
125 u32 cap_info, i;
126 bool have_80mhz;
127
128 memset(vht_cap, 0, sizeof(*vht_cap));
129
130 if (!sta->sta.ht_cap.ht_supported)
131 return;
132
133 if (!vht_cap_ie || !sband->vht_cap.vht_supported)
134 return;
135
136
137 have_80mhz = false;
138 for (i = 0; i < sband->n_channels; i++) {
139 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
140 IEEE80211_CHAN_NO_80MHZ))
141 continue;
142
143 have_80mhz = true;
144 break;
145 }
146
147 if (!have_80mhz)
148 return;
149
150
151
152
153
154
155
156
157 vht_cap->vht_supported = true;
158
159 own_cap = sband->vht_cap;
160
161
162
163
164
165
166 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
167 !test_sta_flag(sta, WLAN_STA_TDLS_PEER))
168 ieee80211_apply_vhtcap_overrides(sdata, &own_cap);
169
170
171 cap_info = le32_to_cpu(vht_cap_ie->vht_cap_info);
172 vht_cap->cap = cap_info;
173 vht_cap->cap &= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
174 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 |
175 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
176 IEEE80211_VHT_CAP_RXLDPC |
177 IEEE80211_VHT_CAP_VHT_TXOP_PS |
178 IEEE80211_VHT_CAP_HTC_VHT |
179 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
180 IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB |
181 IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB |
182 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
183 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN;
184
185
186 switch (own_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
187 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
188 vht_cap->cap |= cap_info &
189 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
190 break;
191 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
192 vht_cap->cap |= cap_info &
193 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
194 break;
195 default:
196
197 break;
198 }
199
200
201 vht_cap->cap |= cap_info & own_cap.cap &
202 (IEEE80211_VHT_CAP_SHORT_GI_80 |
203 IEEE80211_VHT_CAP_SHORT_GI_160);
204
205
206 if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE)
207 vht_cap->cap |= cap_info &
208 (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
209 IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK);
210
211 if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)
212 vht_cap->cap |= cap_info &
213 (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
214 IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK);
215
216 if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)
217 vht_cap->cap |= cap_info &
218 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
219
220 if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)
221 vht_cap->cap |= cap_info &
222 IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE;
223
224 if (own_cap.cap & IEEE80211_VHT_CAP_TXSTBC)
225 vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_RXSTBC_MASK;
226
227 if (own_cap.cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
228 vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_TXSTBC;
229
230
231 memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs,
232 sizeof(struct ieee80211_vht_mcs_info));
233
234
235 for (i = 0; i < 8; i++) {
236 u16 own_rx, own_tx, peer_rx, peer_tx;
237
238 own_rx = le16_to_cpu(own_cap.vht_mcs.rx_mcs_map);
239 own_rx = (own_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
240
241 own_tx = le16_to_cpu(own_cap.vht_mcs.tx_mcs_map);
242 own_tx = (own_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
243
244 peer_rx = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
245 peer_rx = (peer_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
246
247 peer_tx = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);
248 peer_tx = (peer_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
249
250 if (peer_tx != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
251 if (own_rx == IEEE80211_VHT_MCS_NOT_SUPPORTED)
252 peer_tx = IEEE80211_VHT_MCS_NOT_SUPPORTED;
253 else if (own_rx < peer_tx)
254 peer_tx = own_rx;
255 }
256
257 if (peer_rx != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
258 if (own_tx == IEEE80211_VHT_MCS_NOT_SUPPORTED)
259 peer_rx = IEEE80211_VHT_MCS_NOT_SUPPORTED;
260 else if (own_tx < peer_rx)
261 peer_rx = own_tx;
262 }
263
264 vht_cap->vht_mcs.rx_mcs_map &=
265 ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2);
266 vht_cap->vht_mcs.rx_mcs_map |= cpu_to_le16(peer_rx << i * 2);
267
268 vht_cap->vht_mcs.tx_mcs_map &=
269 ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2);
270 vht_cap->vht_mcs.tx_mcs_map |= cpu_to_le16(peer_tx << i * 2);
271 }
272
273
274 switch (vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
275 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
276 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
277 sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
278 break;
279 default:
280 sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80;
281 }
282
283 sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
284
285
286 if (sta->sta.max_amsdu_len == IEEE80211_MAX_MPDU_LEN_HT_3839)
287 return;
288
289 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
290 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
291 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
292 break;
293 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
294 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
295 break;
296 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
297 default:
298 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
299 break;
300 }
301}
302
303enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta)
304{
305 struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
306 u32 cap_width;
307
308 if (!vht_cap->vht_supported)
309 return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
310 IEEE80211_STA_RX_BW_40 :
311 IEEE80211_STA_RX_BW_20;
312
313 cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
314
315 if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
316 cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
317 return IEEE80211_STA_RX_BW_160;
318
319 return IEEE80211_STA_RX_BW_80;
320}
321
322enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta)
323{
324 struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
325 u32 cap_width;
326
327 if (!vht_cap->vht_supported) {
328 if (!sta->sta.ht_cap.ht_supported)
329 return NL80211_CHAN_WIDTH_20_NOHT;
330
331 return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
332 NL80211_CHAN_WIDTH_40 : NL80211_CHAN_WIDTH_20;
333 }
334
335 cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
336
337 if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ)
338 return NL80211_CHAN_WIDTH_160;
339 else if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
340 return NL80211_CHAN_WIDTH_80P80;
341
342 return NL80211_CHAN_WIDTH_80;
343}
344
345enum ieee80211_sta_rx_bandwidth
346ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width)
347{
348 switch (width) {
349 case NL80211_CHAN_WIDTH_20_NOHT:
350 case NL80211_CHAN_WIDTH_20:
351 return IEEE80211_STA_RX_BW_20;
352 case NL80211_CHAN_WIDTH_40:
353 return IEEE80211_STA_RX_BW_40;
354 case NL80211_CHAN_WIDTH_80:
355 return IEEE80211_STA_RX_BW_80;
356 case NL80211_CHAN_WIDTH_160:
357 case NL80211_CHAN_WIDTH_80P80:
358 return IEEE80211_STA_RX_BW_160;
359 default:
360 WARN_ON_ONCE(1);
361 return IEEE80211_STA_RX_BW_20;
362 }
363}
364
365enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta)
366{
367 struct ieee80211_sub_if_data *sdata = sta->sdata;
368 enum ieee80211_sta_rx_bandwidth bw;
369 enum nl80211_chan_width bss_width = sdata->vif.bss_conf.chandef.width;
370
371 bw = ieee80211_sta_cap_rx_bw(sta);
372 bw = min(bw, sta->cur_max_bandwidth);
373 bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width));
374
375 return bw;
376}
377
378void ieee80211_sta_set_rx_nss(struct sta_info *sta)
379{
380 u8 ht_rx_nss = 0, vht_rx_nss = 0;
381
382
383 if (sta->sta.rx_nss)
384 return;
385
386 if (sta->sta.ht_cap.ht_supported) {
387 if (sta->sta.ht_cap.mcs.rx_mask[0])
388 ht_rx_nss++;
389 if (sta->sta.ht_cap.mcs.rx_mask[1])
390 ht_rx_nss++;
391 if (sta->sta.ht_cap.mcs.rx_mask[2])
392 ht_rx_nss++;
393 if (sta->sta.ht_cap.mcs.rx_mask[3])
394 ht_rx_nss++;
395
396 }
397
398 if (sta->sta.vht_cap.vht_supported) {
399 int i;
400 u16 rx_mcs_map;
401
402 rx_mcs_map = le16_to_cpu(sta->sta.vht_cap.vht_mcs.rx_mcs_map);
403
404 for (i = 7; i >= 0; i--) {
405 u8 mcs = (rx_mcs_map >> (2 * i)) & 3;
406
407 if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
408 vht_rx_nss = i + 1;
409 break;
410 }
411 }
412
413 }
414
415 ht_rx_nss = max(ht_rx_nss, vht_rx_nss);
416 sta->sta.rx_nss = max_t(u8, 1, ht_rx_nss);
417}
418
419u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
420 struct sta_info *sta, u8 opmode,
421 enum ieee80211_band band)
422{
423 struct ieee80211_local *local = sdata->local;
424 struct ieee80211_supported_band *sband;
425 enum ieee80211_sta_rx_bandwidth new_bw;
426 u32 changed = 0;
427 u8 nss;
428
429 sband = local->hw.wiphy->bands[band];
430
431
432 if (opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)
433 return 0;
434
435 nss = opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
436 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
437 nss += 1;
438
439 if (sta->sta.rx_nss != nss) {
440 sta->sta.rx_nss = nss;
441 changed |= IEEE80211_RC_NSS_CHANGED;
442 }
443
444 switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
445 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:
446 sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20;
447 break;
448 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ:
449 sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_40;
450 break;
451 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ:
452 sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80;
453 break;
454 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ:
455 sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
456 break;
457 }
458
459 new_bw = ieee80211_sta_cur_vht_bw(sta);
460 if (new_bw != sta->sta.bandwidth) {
461 sta->sta.bandwidth = new_bw;
462 changed |= IEEE80211_RC_BW_CHANGED;
463 }
464
465 return changed;
466}
467
468void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
469 struct ieee80211_mgmt *mgmt)
470{
471 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
472
473 if (!sdata->vif.mu_mimo_owner)
474 return;
475
476 if (!memcmp(mgmt->u.action.u.vht_group_notif.position,
477 bss_conf->mu_group.position, WLAN_USER_POSITION_LEN) &&
478 !memcmp(mgmt->u.action.u.vht_group_notif.membership,
479 bss_conf->mu_group.membership, WLAN_MEMBERSHIP_LEN))
480 return;
481
482 memcpy(bss_conf->mu_group.membership,
483 mgmt->u.action.u.vht_group_notif.membership,
484 WLAN_MEMBERSHIP_LEN);
485 memcpy(bss_conf->mu_group.position,
486 mgmt->u.action.u.vht_group_notif.position,
487 WLAN_USER_POSITION_LEN);
488
489 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
490}
491
492void ieee80211_update_mu_groups(struct ieee80211_vif *vif,
493 const u8 *membership, const u8 *position)
494{
495 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
496
497 if (WARN_ON_ONCE(!vif->mu_mimo_owner))
498 return;
499
500 memcpy(bss_conf->mu_group.membership, membership, WLAN_MEMBERSHIP_LEN);
501 memcpy(bss_conf->mu_group.position, position, WLAN_USER_POSITION_LEN);
502}
503EXPORT_SYMBOL_GPL(ieee80211_update_mu_groups);
504
505void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
506 struct sta_info *sta, u8 opmode,
507 enum ieee80211_band band)
508{
509 struct ieee80211_local *local = sdata->local;
510 struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
511
512 u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode, band);
513
514 if (changed > 0)
515 rate_control_rate_update(local, sband, sta, changed);
516}
517
518void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
519 u16 vht_mask[NL80211_VHT_NSS_MAX])
520{
521 int i;
522 u16 mask, cap = le16_to_cpu(vht_cap);
523
524 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
525 mask = (cap >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
526 switch (mask) {
527 case IEEE80211_VHT_MCS_SUPPORT_0_7:
528 vht_mask[i] = 0x00FF;
529 break;
530 case IEEE80211_VHT_MCS_SUPPORT_0_8:
531 vht_mask[i] = 0x01FF;
532 break;
533 case IEEE80211_VHT_MCS_SUPPORT_0_9:
534 vht_mask[i] = 0x03FF;
535 break;
536 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
537 default:
538 vht_mask[i] = 0;
539 break;
540 }
541 }
542}
543
