1 // SPDX-License-Identifier: GPL-2.0-only
5 * Portions of this file
6 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
7 * Copyright (C) 2018 - 2022 Intel Corporation
10 #include <linux/ieee80211.h>
11 #include <linux/export.h>
12 #include <net/mac80211.h>
13 #include "ieee80211_i.h"
17 static void __check_vhtcap_disable(struct ieee80211_sub_if_data *sdata,
18 struct ieee80211_sta_vht_cap *vht_cap,
21 __le32 le_flag = cpu_to_le32(flag);
23 if (sdata->u.mgd.vht_capa_mask.vht_cap_info & le_flag &&
24 !(sdata->u.mgd.vht_capa.vht_cap_info & le_flag))
25 vht_cap->cap &= ~flag;
28 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
29 struct ieee80211_sta_vht_cap *vht_cap)
32 u16 rxmcs_mask, rxmcs_cap, rxmcs_n, txmcs_mask, txmcs_cap, txmcs_n;
34 if (!vht_cap->vht_supported)
37 if (sdata->vif.type != NL80211_IFTYPE_STATION)
40 __check_vhtcap_disable(sdata, vht_cap,
41 IEEE80211_VHT_CAP_RXLDPC);
42 __check_vhtcap_disable(sdata, vht_cap,
43 IEEE80211_VHT_CAP_SHORT_GI_80);
44 __check_vhtcap_disable(sdata, vht_cap,
45 IEEE80211_VHT_CAP_SHORT_GI_160);
46 __check_vhtcap_disable(sdata, vht_cap,
47 IEEE80211_VHT_CAP_TXSTBC);
48 __check_vhtcap_disable(sdata, vht_cap,
49 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
50 __check_vhtcap_disable(sdata, vht_cap,
51 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
52 __check_vhtcap_disable(sdata, vht_cap,
53 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN);
54 __check_vhtcap_disable(sdata, vht_cap,
55 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN);
57 /* Allow user to decrease AMPDU length exponent */
58 if (sdata->u.mgd.vht_capa_mask.vht_cap_info &
59 cpu_to_le32(IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK)) {
62 n = le32_to_cpu(sdata->u.mgd.vht_capa.vht_cap_info) &
63 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
64 n >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
65 cap = vht_cap->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
66 cap >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
70 ~IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
72 n << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
76 /* Allow the user to decrease MCSes */
78 le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.rx_mcs_map);
79 rxmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.rx_mcs_map);
80 rxmcs_n &= rxmcs_mask;
81 rxmcs_cap = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
84 le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.tx_mcs_map);
85 txmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.tx_mcs_map);
86 txmcs_n &= txmcs_mask;
87 txmcs_cap = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);
88 for (i = 0; i < 8; i++) {
91 m = (rxmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
92 n = (rxmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
93 c = (rxmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
95 if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) ||
96 n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) {
97 rxmcs_cap &= ~(3 << 2*i);
98 rxmcs_cap |= (rxmcs_n & (3 << 2*i));
101 m = (txmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
102 n = (txmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
103 c = (txmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
105 if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) ||
106 n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) {
107 txmcs_cap &= ~(3 << 2*i);
108 txmcs_cap |= (txmcs_n & (3 << 2*i));
111 vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(rxmcs_cap);
112 vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(txmcs_cap);
116 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
117 struct ieee80211_supported_band *sband,
118 const struct ieee80211_vht_cap *vht_cap_ie,
119 struct sta_info *sta)
121 struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.deflink.vht_cap;
122 struct ieee80211_sta_vht_cap own_cap;
126 memset(vht_cap, 0, sizeof(*vht_cap));
128 if (!sta->sta.deflink.ht_cap.ht_supported)
131 if (!vht_cap_ie || !sband->vht_cap.vht_supported)
134 /* Allow VHT if at least one channel on the sband supports 80 MHz */
136 for (i = 0; i < sband->n_channels; i++) {
137 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
138 IEEE80211_CHAN_NO_80MHZ))
149 * A VHT STA must support 40 MHz, but if we verify that here
150 * then we break a few things - some APs (e.g. Netgear R6300v2
151 * and others based on the BCM4360 chipset) will unset this
152 * capability bit when operating in 20 MHz.
155 vht_cap->vht_supported = true;
157 own_cap = sband->vht_cap;
159 * If user has specified capability overrides, take care
160 * of that if the station we're setting up is the AP that
161 * we advertised a restricted capability set to. Override
162 * our own capabilities and then use those below.
164 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
165 !test_sta_flag(sta, WLAN_STA_TDLS_PEER))
166 ieee80211_apply_vhtcap_overrides(sdata, &own_cap);
168 /* take some capabilities as-is */
169 cap_info = le32_to_cpu(vht_cap_ie->vht_cap_info);
170 vht_cap->cap = cap_info;
171 vht_cap->cap &= IEEE80211_VHT_CAP_RXLDPC |
172 IEEE80211_VHT_CAP_VHT_TXOP_PS |
173 IEEE80211_VHT_CAP_HTC_VHT |
174 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK |
175 IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB |
176 IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB |
177 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
178 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN;
180 vht_cap->cap |= min_t(u32, cap_info & IEEE80211_VHT_CAP_MAX_MPDU_MASK,
181 own_cap.cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK);
183 /* and some based on our own capabilities */
184 switch (own_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
185 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
186 vht_cap->cap |= cap_info &
187 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
189 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
190 vht_cap->cap |= cap_info &
191 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
198 /* symmetric capabilities */
199 vht_cap->cap |= cap_info & own_cap.cap &
200 (IEEE80211_VHT_CAP_SHORT_GI_80 |
201 IEEE80211_VHT_CAP_SHORT_GI_160);
204 if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE)
205 vht_cap->cap |= cap_info &
206 (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
207 IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK);
209 if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)
210 vht_cap->cap |= cap_info &
211 (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
212 IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK);
214 if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)
215 vht_cap->cap |= cap_info &
216 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
218 if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)
219 vht_cap->cap |= cap_info &
220 IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE;
222 if (own_cap.cap & IEEE80211_VHT_CAP_TXSTBC)
223 vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_RXSTBC_MASK;
225 if (own_cap.cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
226 vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_TXSTBC;
228 /* Copy peer MCS info, the driver might need them. */
229 memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs,
230 sizeof(struct ieee80211_vht_mcs_info));
232 /* copy EXT_NSS_BW Support value or remove the capability */
233 if (ieee80211_hw_check(&sdata->local->hw, SUPPORTS_VHT_EXT_NSS_BW))
234 vht_cap->cap |= (cap_info & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK);
236 vht_cap->vht_mcs.tx_highest &=
237 ~cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
239 /* but also restrict MCSes */
240 for (i = 0; i < 8; i++) {
241 u16 own_rx, own_tx, peer_rx, peer_tx;
243 own_rx = le16_to_cpu(own_cap.vht_mcs.rx_mcs_map);
244 own_rx = (own_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
246 own_tx = le16_to_cpu(own_cap.vht_mcs.tx_mcs_map);
247 own_tx = (own_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
249 peer_rx = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
250 peer_rx = (peer_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
252 peer_tx = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);
253 peer_tx = (peer_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
255 if (peer_tx != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
256 if (own_rx == IEEE80211_VHT_MCS_NOT_SUPPORTED)
257 peer_tx = IEEE80211_VHT_MCS_NOT_SUPPORTED;
258 else if (own_rx < peer_tx)
262 if (peer_rx != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
263 if (own_tx == IEEE80211_VHT_MCS_NOT_SUPPORTED)
264 peer_rx = IEEE80211_VHT_MCS_NOT_SUPPORTED;
265 else if (own_tx < peer_rx)
269 vht_cap->vht_mcs.rx_mcs_map &=
270 ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2);
271 vht_cap->vht_mcs.rx_mcs_map |= cpu_to_le16(peer_rx << i * 2);
273 vht_cap->vht_mcs.tx_mcs_map &=
274 ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2);
275 vht_cap->vht_mcs.tx_mcs_map |= cpu_to_le16(peer_tx << i * 2);
279 * This is a workaround for VHT-enabled STAs which break the spec
280 * and have the VHT-MCS Rx map filled in with value 3 for all eight
281 * spacial streams, an example is AR9462.
283 * As per spec, in section 22.1.1 Introduction to the VHT PHY
284 * A VHT STA shall support at least single spactial stream VHT-MCSs
285 * 0 to 7 (transmit and receive) in all supported channel widths.
287 if (vht_cap->vht_mcs.rx_mcs_map == cpu_to_le16(0xFFFF)) {
288 vht_cap->vht_supported = false;
289 sdata_info(sdata, "Ignoring VHT IE from %pM due to invalid rx_mcs_map\n",
294 /* finally set up the bandwidth */
295 switch (vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
296 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
297 case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
298 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
301 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_80;
303 if (!(vht_cap->vht_mcs.tx_highest &
304 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)))
308 * If this is non-zero, then it does support 160 MHz after all,
309 * in one form or the other. We don't distinguish here (or even
310 * above) between 160 and 80+80 yet.
312 if (cap_info & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)
313 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
316 sta->sta.deflink.bandwidth = ieee80211_sta_cur_vht_bw(sta, 0);
318 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
319 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
320 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
322 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
323 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
325 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
327 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
332 /* FIXME: move this to some better location - parses HE/EHT now */
333 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta,
334 unsigned int link_id)
336 struct ieee80211_bss_conf *link_conf = sta->sdata->vif.link_conf[link_id];
337 struct ieee80211_link_sta *link_sta = sta->sta.link[link_id];
338 struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
339 struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
340 struct ieee80211_sta_eht_cap *eht_cap = &link_sta->eht_cap;
343 if (he_cap->has_he) {
346 if (eht_cap->has_eht &&
347 link_conf->chandef.chan->band == NL80211_BAND_6GHZ) {
348 info = eht_cap->eht_cap_elem.phy_cap_info[0];
350 if (info & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ)
351 return IEEE80211_STA_RX_BW_320;
354 info = he_cap->he_cap_elem.phy_cap_info[0];
356 if (link_conf->chandef.chan->band == NL80211_BAND_2GHZ) {
357 if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G)
358 return IEEE80211_STA_RX_BW_40;
360 return IEEE80211_STA_RX_BW_20;
363 if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G ||
364 info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
365 return IEEE80211_STA_RX_BW_160;
366 else if (info & IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G)
367 return IEEE80211_STA_RX_BW_80;
369 return IEEE80211_STA_RX_BW_20;
372 if (!vht_cap->vht_supported)
373 return link_sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
374 IEEE80211_STA_RX_BW_40 :
375 IEEE80211_STA_RX_BW_20;
377 cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
379 if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
380 cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
381 return IEEE80211_STA_RX_BW_160;
384 * If this is non-zero, then it does support 160 MHz after all,
385 * in one form or the other. We don't distinguish here (or even
386 * above) between 160 and 80+80 yet.
388 if (vht_cap->cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)
389 return IEEE80211_STA_RX_BW_160;
391 return IEEE80211_STA_RX_BW_80;
394 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta)
396 struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.deflink.vht_cap;
399 if (!vht_cap->vht_supported) {
400 if (!sta->sta.deflink.ht_cap.ht_supported)
401 return NL80211_CHAN_WIDTH_20_NOHT;
403 return sta->sta.deflink.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
404 NL80211_CHAN_WIDTH_40 : NL80211_CHAN_WIDTH_20;
407 cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
409 if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ)
410 return NL80211_CHAN_WIDTH_160;
411 else if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
412 return NL80211_CHAN_WIDTH_80P80;
414 return NL80211_CHAN_WIDTH_80;
417 enum nl80211_chan_width
418 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta)
420 enum ieee80211_sta_rx_bandwidth cur_bw = sta->sta.deflink.bandwidth;
421 struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.deflink.vht_cap;
425 case IEEE80211_STA_RX_BW_20:
426 if (!sta->sta.deflink.ht_cap.ht_supported)
427 return NL80211_CHAN_WIDTH_20_NOHT;
429 return NL80211_CHAN_WIDTH_20;
430 case IEEE80211_STA_RX_BW_40:
431 return NL80211_CHAN_WIDTH_40;
432 case IEEE80211_STA_RX_BW_80:
433 return NL80211_CHAN_WIDTH_80;
434 case IEEE80211_STA_RX_BW_160:
436 vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
438 if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ)
439 return NL80211_CHAN_WIDTH_160;
441 return NL80211_CHAN_WIDTH_80P80;
443 return NL80211_CHAN_WIDTH_20;
447 enum ieee80211_sta_rx_bandwidth
448 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width)
451 case NL80211_CHAN_WIDTH_20_NOHT:
452 case NL80211_CHAN_WIDTH_20:
453 return IEEE80211_STA_RX_BW_20;
454 case NL80211_CHAN_WIDTH_40:
455 return IEEE80211_STA_RX_BW_40;
456 case NL80211_CHAN_WIDTH_80:
457 return IEEE80211_STA_RX_BW_80;
458 case NL80211_CHAN_WIDTH_160:
459 case NL80211_CHAN_WIDTH_80P80:
460 return IEEE80211_STA_RX_BW_160;
461 case NL80211_CHAN_WIDTH_320:
462 return IEEE80211_STA_RX_BW_320;
465 return IEEE80211_STA_RX_BW_20;
469 /* FIXME: rename/move - this deals with everything not just VHT */
470 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta,
471 unsigned int link_id)
473 struct ieee80211_bss_conf *link_conf = sta->sdata->vif.link_conf[link_id];
474 enum nl80211_chan_width bss_width = link_conf->chandef.width;
475 enum ieee80211_sta_rx_bandwidth bw;
477 bw = ieee80211_sta_cap_rx_bw(sta, link_id);
478 bw = min(bw, sta->link[link_id]->cur_max_bandwidth);
480 /* Don't consider AP's bandwidth for TDLS peers, section 11.23.1 of
481 * IEEE80211-2016 specification makes higher bandwidth operation
482 * possible on the TDLS link if the peers have wider bandwidth
485 * However, in this case, and only if the TDLS peer is authorized,
486 * limit to the tdls_chandef so that the configuration here isn't
487 * wider than what's actually requested on the channel context.
489 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
490 test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW) &&
491 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
492 sta->tdls_chandef.chan)
493 bw = min(bw, ieee80211_chan_width_to_rx_bw(sta->tdls_chandef.width));
495 bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width));
500 void ieee80211_sta_set_rx_nss(struct sta_info *sta)
502 u8 ht_rx_nss = 0, vht_rx_nss = 0, he_rx_nss = 0, eht_rx_nss = 0, rx_nss;
505 /* if we received a notification already don't overwrite it */
506 if (sta->sta.deflink.rx_nss)
509 if (sta->sta.deflink.eht_cap.has_eht) {
511 const u8 *rx_nss_mcs = (void *)&sta->sta.deflink.eht_cap.eht_mcs_nss_supp;
513 /* get the max nss for EHT over all possible bandwidths and mcs */
514 for (i = 0; i < sizeof(struct ieee80211_eht_mcs_nss_supp); i++)
515 eht_rx_nss = max_t(u8, eht_rx_nss,
516 u8_get_bits(rx_nss_mcs[i],
517 IEEE80211_EHT_MCS_NSS_RX));
520 if (sta->sta.deflink.he_cap.has_he) {
522 u8 rx_mcs_80 = 0, rx_mcs_160 = 0;
523 const struct ieee80211_sta_he_cap *he_cap = &sta->sta.deflink.he_cap;
525 le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
526 u16 mcs_80_map = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
528 for (i = 7; i >= 0; i--) {
529 u8 mcs_160 = (mcs_160_map >> (2 * i)) & 3;
531 if (mcs_160 != IEEE80211_HE_MCS_NOT_SUPPORTED) {
536 for (i = 7; i >= 0; i--) {
537 u8 mcs_80 = (mcs_80_map >> (2 * i)) & 3;
539 if (mcs_80 != IEEE80211_HE_MCS_NOT_SUPPORTED) {
545 support_160 = he_cap->he_cap_elem.phy_cap_info[0] &
546 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
549 he_rx_nss = min(rx_mcs_80, rx_mcs_160);
551 he_rx_nss = rx_mcs_80;
554 if (sta->sta.deflink.ht_cap.ht_supported) {
555 if (sta->sta.deflink.ht_cap.mcs.rx_mask[0])
557 if (sta->sta.deflink.ht_cap.mcs.rx_mask[1])
559 if (sta->sta.deflink.ht_cap.mcs.rx_mask[2])
561 if (sta->sta.deflink.ht_cap.mcs.rx_mask[3])
563 /* FIXME: consider rx_highest? */
566 if (sta->sta.deflink.vht_cap.vht_supported) {
570 rx_mcs_map = le16_to_cpu(sta->sta.deflink.vht_cap.vht_mcs.rx_mcs_map);
572 for (i = 7; i >= 0; i--) {
573 u8 mcs = (rx_mcs_map >> (2 * i)) & 3;
575 if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
580 /* FIXME: consider rx_highest? */
583 rx_nss = max(vht_rx_nss, ht_rx_nss);
584 rx_nss = max(he_rx_nss, rx_nss);
585 rx_nss = max(eht_rx_nss, rx_nss);
586 sta->sta.deflink.rx_nss = max_t(u8, 1, rx_nss);
589 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
590 struct sta_info *sta, u8 opmode,
591 enum nl80211_band band)
593 enum ieee80211_sta_rx_bandwidth new_bw;
594 struct sta_opmode_info sta_opmode = {};
598 /* ignore - no support for BF yet */
599 if (opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)
602 nss = opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
603 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
606 if (sta->sta.deflink.rx_nss != nss) {
607 sta->sta.deflink.rx_nss = nss;
608 sta_opmode.rx_nss = nss;
609 changed |= IEEE80211_RC_NSS_CHANGED;
610 sta_opmode.changed |= STA_OPMODE_N_SS_CHANGED;
613 switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
614 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:
615 /* ignore IEEE80211_OPMODE_NOTIF_BW_160_80P80 must not be set */
616 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_20;
618 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ:
619 /* ignore IEEE80211_OPMODE_NOTIF_BW_160_80P80 must not be set */
620 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_40;
622 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ:
623 if (opmode & IEEE80211_OPMODE_NOTIF_BW_160_80P80)
624 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
626 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_80;
628 case IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ:
629 /* legacy only, no longer used by newer spec */
630 sta->deflink.cur_max_bandwidth = IEEE80211_STA_RX_BW_160;
634 new_bw = ieee80211_sta_cur_vht_bw(sta, 0);
635 if (new_bw != sta->sta.deflink.bandwidth) {
636 sta->sta.deflink.bandwidth = new_bw;
637 sta_opmode.bw = ieee80211_sta_rx_bw_to_chan_width(sta);
638 changed |= IEEE80211_RC_BW_CHANGED;
639 sta_opmode.changed |= STA_OPMODE_MAX_BW_CHANGED;
642 if (sta_opmode.changed)
643 cfg80211_sta_opmode_change_notify(sdata->dev, sta->addr,
644 &sta_opmode, GFP_KERNEL);
649 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
650 struct ieee80211_mgmt *mgmt)
652 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
654 if (!sdata->vif.bss_conf.mu_mimo_owner)
657 if (!memcmp(mgmt->u.action.u.vht_group_notif.position,
658 bss_conf->mu_group.position, WLAN_USER_POSITION_LEN) &&
659 !memcmp(mgmt->u.action.u.vht_group_notif.membership,
660 bss_conf->mu_group.membership, WLAN_MEMBERSHIP_LEN))
663 memcpy(bss_conf->mu_group.membership,
664 mgmt->u.action.u.vht_group_notif.membership,
665 WLAN_MEMBERSHIP_LEN);
666 memcpy(bss_conf->mu_group.position,
667 mgmt->u.action.u.vht_group_notif.position,
668 WLAN_USER_POSITION_LEN);
670 ieee80211_link_info_change_notify(sdata, 0, BSS_CHANGED_MU_GROUPS);
673 void ieee80211_update_mu_groups(struct ieee80211_vif *vif,
674 const u8 *membership, const u8 *position)
676 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
678 if (WARN_ON_ONCE(!vif->bss_conf.mu_mimo_owner))
681 memcpy(bss_conf->mu_group.membership, membership, WLAN_MEMBERSHIP_LEN);
682 memcpy(bss_conf->mu_group.position, position, WLAN_USER_POSITION_LEN);
684 EXPORT_SYMBOL_GPL(ieee80211_update_mu_groups);
686 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
687 struct sta_info *sta, u8 opmode,
688 enum nl80211_band band)
690 struct ieee80211_local *local = sdata->local;
691 struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
693 u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode, band);
696 ieee80211_recalc_min_chandef(sdata);
697 rate_control_rate_update(local, sband, sta, 0, changed);
701 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
702 u16 vht_mask[NL80211_VHT_NSS_MAX])
705 u16 mask, cap = le16_to_cpu(vht_cap);
707 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
708 mask = (cap >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED;
710 case IEEE80211_VHT_MCS_SUPPORT_0_7:
711 vht_mask[i] = 0x00FF;
713 case IEEE80211_VHT_MCS_SUPPORT_0_8:
714 vht_mask[i] = 0x01FF;
716 case IEEE80211_VHT_MCS_SUPPORT_0_9:
717 vht_mask[i] = 0x03FF;
719 case IEEE80211_VHT_MCS_NOT_SUPPORTED: