Commit | Line | Data |
---|---|---|
818255ea MP |
1 | /* |
2 | * VHT handling | |
3 | * | |
23a1f8d4 SS |
4 | * Portions of this file |
5 | * Copyright(c) 2015 Intel Deutschland GmbH | |
6 | * | |
818255ea MP |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/ieee80211.h> | |
13 | #include <linux/export.h> | |
14 | #include <net/mac80211.h> | |
15 | #include "ieee80211_i.h" | |
0af83d3d | 16 | #include "rate.h" |
818255ea MP |
17 | |
18 | ||
dd5ecfea JB |
19 | static 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 | ||
30 | void 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 | /* Allow user to decrease AMPDU length exponent */ | |
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 | /* Allow the user to decrease MCSes */ | |
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 | ||
4a3cb702 JB |
117 | void |
118 | ieee80211_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) | |
818255ea | 122 | { |
4a34215e | 123 | struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap; |
55d942f4 JB |
124 | struct ieee80211_sta_vht_cap own_cap; |
125 | u32 cap_info, i; | |
52a45f38 | 126 | bool have_80mhz; |
818255ea MP |
127 | |
128 | memset(vht_cap, 0, sizeof(*vht_cap)); | |
129 | ||
4a34215e JB |
130 | if (!sta->sta.ht_cap.ht_supported) |
131 | return; | |
132 | ||
818255ea MP |
133 | if (!vht_cap_ie || !sband->vht_cap.vht_supported) |
134 | return; | |
135 | ||
52a45f38 AN |
136 | /* Allow VHT if at least one channel on the sband supports 80 MHz */ |
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 | ||
4a817aa7 JB |
150 | /* |
151 | * A VHT STA must support 40 MHz, but if we verify that here | |
152 | * then we break a few things - some APs (e.g. Netgear R6300v2 | |
153 | * and others based on the BCM4360 chipset) will unset this | |
154 | * capability bit when operating in 20 MHz. | |
155 | */ | |
e1a0c6b3 | 156 | |
818255ea MP |
157 | vht_cap->vht_supported = true; |
158 | ||
55d942f4 JB |
159 | own_cap = sband->vht_cap; |
160 | /* | |
161 | * If user has specified capability overrides, take care | |
162 | * of that if the station we're setting up is the AP that | |
163 | * we advertised a restricted capability set to. Override | |
164 | * our own capabilities and then use those below. | |
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 | /* take some capabilities as-is */ | |
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 | /* and some based on our own capabilities */ | |
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 | /* nothing */ | |
197 | break; | |
198 | } | |
199 | ||
200 | /* symmetric capabilities */ | |
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 | /* remaining ones */ | |
fbdd90ea | 206 | if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) |
55d942f4 JB |
207 | vht_cap->cap |= cap_info & |
208 | (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | | |
fbdd90ea | 209 | IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK); |
55d942f4 JB |
210 | |
211 | if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE) | |
212 | vht_cap->cap |= cap_info & | |
5eb7906b | 213 | (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
fbdd90ea | 214 | IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK); |
55d942f4 JB |
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; | |
818255ea MP |
229 | |
230 | /* Copy peer MCS info, the driver might need them. */ | |
231 | memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs, | |
232 | sizeof(struct ieee80211_vht_mcs_info)); | |
e1a0c6b3 | 233 | |
55d942f4 JB |
234 | /* but also restrict MCSes */ |
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 | /* finally set up the bandwidth */ | |
0af83d3d JB |
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 | ||
e1a0c6b3 | 283 | sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta); |
506bcfa8 EG |
284 | |
285 | /* If HT IE reported 3839 bytes only, stay with that size. */ | |
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 | } | |
e1a0c6b3 JB |
301 | } |
302 | ||
1c45c5ce | 303 | enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta) |
e1a0c6b3 | 304 | { |
1c45c5ce EP |
305 | struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap; |
306 | u32 cap_width; | |
e1a0c6b3 | 307 | |
1c45c5ce EP |
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; | |
e1a0c6b3 | 312 | |
1c45c5ce EP |
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 | ||
322 | static enum ieee80211_sta_rx_bandwidth | |
323 | ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width) | |
324 | { | |
325 | switch (width) { | |
e1a0c6b3 JB |
326 | case NL80211_CHAN_WIDTH_20_NOHT: |
327 | case NL80211_CHAN_WIDTH_20: | |
1c45c5ce | 328 | return IEEE80211_STA_RX_BW_20; |
e1a0c6b3 | 329 | case NL80211_CHAN_WIDTH_40: |
1c45c5ce EP |
330 | return IEEE80211_STA_RX_BW_40; |
331 | case NL80211_CHAN_WIDTH_80: | |
332 | return IEEE80211_STA_RX_BW_80; | |
e1a0c6b3 | 333 | case NL80211_CHAN_WIDTH_160: |
e1a0c6b3 | 334 | case NL80211_CHAN_WIDTH_80P80: |
1c45c5ce EP |
335 | return IEEE80211_STA_RX_BW_160; |
336 | default: | |
337 | WARN_ON_ONCE(1); | |
338 | return IEEE80211_STA_RX_BW_20; | |
e1a0c6b3 | 339 | } |
1c45c5ce EP |
340 | } |
341 | ||
342 | enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta) | |
343 | { | |
344 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
345 | enum ieee80211_sta_rx_bandwidth bw; | |
b98fb44f | 346 | enum nl80211_chan_width bss_width = sdata->vif.bss_conf.chandef.width; |
1c45c5ce | 347 | |
b98fb44f | 348 | bw = ieee80211_sta_cap_rx_bw(sta); |
1c45c5ce | 349 | bw = min(bw, sta->cur_max_bandwidth); |
0af83d3d | 350 | |
b98fb44f AN |
351 | /* do not cap the BW of TDLS WIDER_BW peers by the bss */ |
352 | if (!test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW)) | |
353 | bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width)); | |
354 | ||
0af83d3d | 355 | return bw; |
818255ea | 356 | } |
8921d04e JB |
357 | |
358 | void ieee80211_sta_set_rx_nss(struct sta_info *sta) | |
359 | { | |
360 | u8 ht_rx_nss = 0, vht_rx_nss = 0; | |
361 | ||
362 | /* if we received a notification already don't overwrite it */ | |
363 | if (sta->sta.rx_nss) | |
364 | return; | |
365 | ||
366 | if (sta->sta.ht_cap.ht_supported) { | |
367 | if (sta->sta.ht_cap.mcs.rx_mask[0]) | |
368 | ht_rx_nss++; | |
369 | if (sta->sta.ht_cap.mcs.rx_mask[1]) | |
370 | ht_rx_nss++; | |
371 | if (sta->sta.ht_cap.mcs.rx_mask[2]) | |
372 | ht_rx_nss++; | |
373 | if (sta->sta.ht_cap.mcs.rx_mask[3]) | |
374 | ht_rx_nss++; | |
375 | /* FIXME: consider rx_highest? */ | |
376 | } | |
377 | ||
378 | if (sta->sta.vht_cap.vht_supported) { | |
379 | int i; | |
380 | u16 rx_mcs_map; | |
381 | ||
382 | rx_mcs_map = le16_to_cpu(sta->sta.vht_cap.vht_mcs.rx_mcs_map); | |
383 | ||
384 | for (i = 7; i >= 0; i--) { | |
385 | u8 mcs = (rx_mcs_map >> (2 * i)) & 3; | |
386 | ||
387 | if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) { | |
388 | vht_rx_nss = i + 1; | |
389 | break; | |
390 | } | |
391 | } | |
392 | /* FIXME: consider rx_highest? */ | |
393 | } | |
394 | ||
395 | ht_rx_nss = max(ht_rx_nss, vht_rx_nss); | |
396 | sta->sta.rx_nss = max_t(u8, 1, ht_rx_nss); | |
397 | } | |
0af83d3d | 398 | |
b1bce14a MK |
399 | u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, |
400 | struct sta_info *sta, u8 opmode, | |
cf1e05c6 | 401 | enum ieee80211_band band) |
0af83d3d JB |
402 | { |
403 | struct ieee80211_local *local = sdata->local; | |
404 | struct ieee80211_supported_band *sband; | |
405 | enum ieee80211_sta_rx_bandwidth new_bw; | |
406 | u32 changed = 0; | |
407 | u8 nss; | |
408 | ||
409 | sband = local->hw.wiphy->bands[band]; | |
410 | ||
411 | /* ignore - no support for BF yet */ | |
412 | if (opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF) | |
b1bce14a | 413 | return 0; |
0af83d3d JB |
414 | |
415 | nss = opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
416 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
417 | nss += 1; | |
418 | ||
419 | if (sta->sta.rx_nss != nss) { | |
420 | sta->sta.rx_nss = nss; | |
421 | changed |= IEEE80211_RC_NSS_CHANGED; | |
422 | } | |
423 | ||
424 | switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) { | |
425 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ: | |
426 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20; | |
427 | break; | |
428 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ: | |
429 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_40; | |
430 | break; | |
431 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ: | |
432 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80; | |
433 | break; | |
434 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ: | |
435 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160; | |
436 | break; | |
437 | } | |
438 | ||
439 | new_bw = ieee80211_sta_cur_vht_bw(sta); | |
440 | if (new_bw != sta->sta.bandwidth) { | |
441 | sta->sta.bandwidth = new_bw; | |
38745c74 | 442 | changed |= IEEE80211_RC_BW_CHANGED; |
0af83d3d JB |
443 | } |
444 | ||
b1bce14a MK |
445 | return changed; |
446 | } | |
447 | ||
23a1f8d4 SS |
448 | void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, |
449 | struct ieee80211_mgmt *mgmt) | |
450 | { | |
451 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; | |
452 | ||
453 | if (!(sdata->flags & IEEE80211_SDATA_MU_MIMO_OWNER)) | |
454 | return; | |
455 | ||
456 | if (!memcmp(mgmt->u.action.u.vht_group_notif.position, | |
457 | bss_conf->mu_group.position, WLAN_USER_POSITION_LEN) && | |
458 | !memcmp(mgmt->u.action.u.vht_group_notif.membership, | |
459 | bss_conf->mu_group.membership, WLAN_MEMBERSHIP_LEN)) | |
460 | return; | |
461 | ||
462 | memcpy(mgmt->u.action.u.vht_group_notif.membership, | |
463 | bss_conf->mu_group.membership, WLAN_MEMBERSHIP_LEN); | |
464 | memcpy(mgmt->u.action.u.vht_group_notif.position, | |
465 | bss_conf->mu_group.position, WLAN_USER_POSITION_LEN); | |
466 | ||
467 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS); | |
468 | } | |
469 | ||
b1bce14a MK |
470 | void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, |
471 | struct sta_info *sta, u8 opmode, | |
cf1e05c6 | 472 | enum ieee80211_band band) |
b1bce14a MK |
473 | { |
474 | struct ieee80211_local *local = sdata->local; | |
475 | struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; | |
476 | ||
cf1e05c6 | 477 | u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode, band); |
b1bce14a MK |
478 | |
479 | if (changed > 0) | |
0af83d3d JB |
480 | rate_control_rate_update(local, sband, sta, changed); |
481 | } | |
b119ad6e LB |
482 | |
483 | void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, | |
484 | u16 vht_mask[NL80211_VHT_NSS_MAX]) | |
485 | { | |
486 | int i; | |
487 | u16 mask, cap = le16_to_cpu(vht_cap); | |
488 | ||
489 | for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { | |
490 | mask = (cap >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
491 | switch (mask) { | |
492 | case IEEE80211_VHT_MCS_SUPPORT_0_7: | |
493 | vht_mask[i] = 0x00FF; | |
494 | break; | |
495 | case IEEE80211_VHT_MCS_SUPPORT_0_8: | |
496 | vht_mask[i] = 0x01FF; | |
497 | break; | |
498 | case IEEE80211_VHT_MCS_SUPPORT_0_9: | |
499 | vht_mask[i] = 0x03FF; | |
500 | break; | |
501 | case IEEE80211_VHT_MCS_NOT_SUPPORTED: | |
502 | default: | |
503 | vht_mask[i] = 0; | |
504 | break; | |
505 | } | |
506 | } | |
507 | } |