Commit | Line | Data |
---|---|---|
818255ea MP |
1 | /* |
2 | * VHT handling | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #include <linux/ieee80211.h> | |
10 | #include <linux/export.h> | |
11 | #include <net/mac80211.h> | |
12 | #include "ieee80211_i.h" | |
0af83d3d | 13 | #include "rate.h" |
818255ea MP |
14 | |
15 | ||
dd5ecfea JB |
16 | static void __check_vhtcap_disable(struct ieee80211_sub_if_data *sdata, |
17 | struct ieee80211_sta_vht_cap *vht_cap, | |
18 | u32 flag) | |
19 | { | |
20 | __le32 le_flag = cpu_to_le32(flag); | |
21 | ||
22 | if (sdata->u.mgd.vht_capa_mask.vht_cap_info & le_flag && | |
23 | !(sdata->u.mgd.vht_capa.vht_cap_info & le_flag)) | |
24 | vht_cap->cap &= ~flag; | |
25 | } | |
26 | ||
27 | void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, | |
28 | struct ieee80211_sta_vht_cap *vht_cap) | |
29 | { | |
30 | int i; | |
31 | u16 rxmcs_mask, rxmcs_cap, rxmcs_n, txmcs_mask, txmcs_cap, txmcs_n; | |
32 | ||
33 | if (!vht_cap->vht_supported) | |
34 | return; | |
35 | ||
36 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
37 | return; | |
38 | ||
39 | __check_vhtcap_disable(sdata, vht_cap, | |
40 | IEEE80211_VHT_CAP_RXLDPC); | |
41 | __check_vhtcap_disable(sdata, vht_cap, | |
42 | IEEE80211_VHT_CAP_SHORT_GI_80); | |
43 | __check_vhtcap_disable(sdata, vht_cap, | |
44 | IEEE80211_VHT_CAP_SHORT_GI_160); | |
45 | __check_vhtcap_disable(sdata, vht_cap, | |
46 | IEEE80211_VHT_CAP_TXSTBC); | |
47 | __check_vhtcap_disable(sdata, vht_cap, | |
48 | IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE); | |
49 | __check_vhtcap_disable(sdata, vht_cap, | |
50 | IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE); | |
51 | __check_vhtcap_disable(sdata, vht_cap, | |
52 | IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN); | |
53 | __check_vhtcap_disable(sdata, vht_cap, | |
54 | IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN); | |
55 | ||
56 | /* Allow user to decrease AMPDU length exponent */ | |
57 | if (sdata->u.mgd.vht_capa_mask.vht_cap_info & | |
58 | cpu_to_le32(IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK)) { | |
59 | u32 cap, n; | |
60 | ||
61 | n = le32_to_cpu(sdata->u.mgd.vht_capa.vht_cap_info) & | |
62 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
63 | n >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
64 | cap = vht_cap->cap & IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
65 | cap >>= IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
66 | ||
67 | if (n < cap) { | |
68 | vht_cap->cap &= | |
69 | ~IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
70 | vht_cap->cap |= | |
71 | n << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
72 | } | |
73 | } | |
74 | ||
75 | /* Allow the user to decrease MCSes */ | |
76 | rxmcs_mask = | |
77 | le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.rx_mcs_map); | |
78 | rxmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.rx_mcs_map); | |
79 | rxmcs_n &= rxmcs_mask; | |
80 | rxmcs_cap = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map); | |
81 | ||
82 | txmcs_mask = | |
83 | le16_to_cpu(sdata->u.mgd.vht_capa_mask.supp_mcs.tx_mcs_map); | |
84 | txmcs_n = le16_to_cpu(sdata->u.mgd.vht_capa.supp_mcs.tx_mcs_map); | |
85 | txmcs_n &= txmcs_mask; | |
86 | txmcs_cap = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map); | |
87 | for (i = 0; i < 8; i++) { | |
88 | u8 m, n, c; | |
89 | ||
90 | m = (rxmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
91 | n = (rxmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
92 | c = (rxmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
93 | ||
94 | if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) || | |
95 | n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) { | |
96 | rxmcs_cap &= ~(3 << 2*i); | |
97 | rxmcs_cap |= (rxmcs_n & (3 << 2*i)); | |
98 | } | |
99 | ||
100 | m = (txmcs_mask >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
101 | n = (txmcs_n >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
102 | c = (txmcs_cap >> 2*i) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
103 | ||
104 | if (m && ((c != IEEE80211_VHT_MCS_NOT_SUPPORTED && n < c) || | |
105 | n == IEEE80211_VHT_MCS_NOT_SUPPORTED)) { | |
106 | txmcs_cap &= ~(3 << 2*i); | |
107 | txmcs_cap |= (txmcs_n & (3 << 2*i)); | |
108 | } | |
109 | } | |
110 | vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(rxmcs_cap); | |
111 | vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(txmcs_cap); | |
112 | } | |
113 | ||
4a3cb702 JB |
114 | void |
115 | ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, | |
116 | struct ieee80211_supported_band *sband, | |
117 | const struct ieee80211_vht_cap *vht_cap_ie, | |
118 | struct sta_info *sta) | |
818255ea | 119 | { |
4a34215e | 120 | struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap; |
55d942f4 JB |
121 | struct ieee80211_sta_vht_cap own_cap; |
122 | u32 cap_info, i; | |
52a45f38 | 123 | bool have_80mhz; |
818255ea MP |
124 | |
125 | memset(vht_cap, 0, sizeof(*vht_cap)); | |
126 | ||
4a34215e JB |
127 | if (!sta->sta.ht_cap.ht_supported) |
128 | return; | |
129 | ||
818255ea MP |
130 | if (!vht_cap_ie || !sband->vht_cap.vht_supported) |
131 | return; | |
132 | ||
52a45f38 AN |
133 | /* Allow VHT if at least one channel on the sband supports 80 MHz */ |
134 | have_80mhz = false; | |
135 | for (i = 0; i < sband->n_channels; i++) { | |
136 | if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | | |
137 | IEEE80211_CHAN_NO_80MHZ)) | |
138 | continue; | |
139 | ||
140 | have_80mhz = true; | |
141 | break; | |
142 | } | |
143 | ||
144 | if (!have_80mhz) | |
145 | return; | |
146 | ||
4a817aa7 JB |
147 | /* |
148 | * A VHT STA must support 40 MHz, but if we verify that here | |
149 | * then we break a few things - some APs (e.g. Netgear R6300v2 | |
150 | * and others based on the BCM4360 chipset) will unset this | |
151 | * capability bit when operating in 20 MHz. | |
152 | */ | |
e1a0c6b3 | 153 | |
818255ea MP |
154 | vht_cap->vht_supported = true; |
155 | ||
55d942f4 JB |
156 | own_cap = sband->vht_cap; |
157 | /* | |
158 | * If user has specified capability overrides, take care | |
159 | * of that if the station we're setting up is the AP that | |
160 | * we advertised a restricted capability set to. Override | |
161 | * our own capabilities and then use those below. | |
162 | */ | |
163 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
164 | !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) | |
165 | ieee80211_apply_vhtcap_overrides(sdata, &own_cap); | |
166 | ||
167 | /* take some capabilities as-is */ | |
168 | cap_info = le32_to_cpu(vht_cap_ie->vht_cap_info); | |
169 | vht_cap->cap = cap_info; | |
170 | vht_cap->cap &= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 | | |
171 | IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 | | |
172 | IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 | | |
173 | IEEE80211_VHT_CAP_RXLDPC | | |
174 | IEEE80211_VHT_CAP_VHT_TXOP_PS | | |
175 | IEEE80211_VHT_CAP_HTC_VHT | | |
176 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | | |
177 | IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB | | |
178 | IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB | | |
179 | IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | | |
180 | IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN; | |
181 | ||
182 | /* and some based on our own capabilities */ | |
183 | switch (own_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { | |
184 | case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: | |
185 | vht_cap->cap |= cap_info & | |
186 | IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
187 | break; | |
188 | case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: | |
189 | vht_cap->cap |= cap_info & | |
190 | IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; | |
191 | break; | |
192 | default: | |
193 | /* nothing */ | |
194 | break; | |
195 | } | |
196 | ||
197 | /* symmetric capabilities */ | |
198 | vht_cap->cap |= cap_info & own_cap.cap & | |
199 | (IEEE80211_VHT_CAP_SHORT_GI_80 | | |
200 | IEEE80211_VHT_CAP_SHORT_GI_160); | |
201 | ||
202 | /* remaining ones */ | |
fbdd90ea | 203 | if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) |
55d942f4 JB |
204 | vht_cap->cap |= cap_info & |
205 | (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | | |
fbdd90ea | 206 | IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK); |
55d942f4 JB |
207 | |
208 | if (own_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE) | |
209 | vht_cap->cap |= cap_info & | |
5eb7906b | 210 | (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
fbdd90ea | 211 | IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK); |
55d942f4 JB |
212 | |
213 | if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE) | |
214 | vht_cap->cap |= cap_info & | |
215 | IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; | |
216 | ||
217 | if (own_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) | |
218 | vht_cap->cap |= cap_info & | |
219 | IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE; | |
220 | ||
221 | if (own_cap.cap & IEEE80211_VHT_CAP_TXSTBC) | |
222 | vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_RXSTBC_MASK; | |
223 | ||
224 | if (own_cap.cap & IEEE80211_VHT_CAP_RXSTBC_MASK) | |
225 | vht_cap->cap |= cap_info & IEEE80211_VHT_CAP_TXSTBC; | |
818255ea MP |
226 | |
227 | /* Copy peer MCS info, the driver might need them. */ | |
228 | memcpy(&vht_cap->vht_mcs, &vht_cap_ie->supp_mcs, | |
229 | sizeof(struct ieee80211_vht_mcs_info)); | |
e1a0c6b3 | 230 | |
55d942f4 JB |
231 | /* but also restrict MCSes */ |
232 | for (i = 0; i < 8; i++) { | |
233 | u16 own_rx, own_tx, peer_rx, peer_tx; | |
234 | ||
235 | own_rx = le16_to_cpu(own_cap.vht_mcs.rx_mcs_map); | |
236 | own_rx = (own_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
237 | ||
238 | own_tx = le16_to_cpu(own_cap.vht_mcs.tx_mcs_map); | |
239 | own_tx = (own_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
240 | ||
241 | peer_rx = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map); | |
242 | peer_rx = (peer_rx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
243 | ||
244 | peer_tx = le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map); | |
245 | peer_tx = (peer_tx >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
246 | ||
247 | if (peer_tx != IEEE80211_VHT_MCS_NOT_SUPPORTED) { | |
248 | if (own_rx == IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
249 | peer_tx = IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
250 | else if (own_rx < peer_tx) | |
251 | peer_tx = own_rx; | |
252 | } | |
253 | ||
254 | if (peer_rx != IEEE80211_VHT_MCS_NOT_SUPPORTED) { | |
255 | if (own_tx == IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
256 | peer_rx = IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
257 | else if (own_tx < peer_rx) | |
258 | peer_rx = own_tx; | |
259 | } | |
260 | ||
261 | vht_cap->vht_mcs.rx_mcs_map &= | |
262 | ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2); | |
263 | vht_cap->vht_mcs.rx_mcs_map |= cpu_to_le16(peer_rx << i * 2); | |
264 | ||
265 | vht_cap->vht_mcs.tx_mcs_map &= | |
266 | ~cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << i * 2); | |
267 | vht_cap->vht_mcs.tx_mcs_map |= cpu_to_le16(peer_tx << i * 2); | |
268 | } | |
269 | ||
270 | /* finally set up the bandwidth */ | |
0af83d3d JB |
271 | switch (vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) { |
272 | case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ: | |
273 | case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ: | |
274 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160; | |
275 | break; | |
276 | default: | |
277 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80; | |
278 | } | |
279 | ||
e1a0c6b3 JB |
280 | sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta); |
281 | } | |
282 | ||
1c45c5ce | 283 | enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta) |
e1a0c6b3 | 284 | { |
1c45c5ce EP |
285 | struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap; |
286 | u32 cap_width; | |
e1a0c6b3 | 287 | |
1c45c5ce EP |
288 | if (!vht_cap->vht_supported) |
289 | return sta->sta.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? | |
290 | IEEE80211_STA_RX_BW_40 : | |
291 | IEEE80211_STA_RX_BW_20; | |
e1a0c6b3 | 292 | |
1c45c5ce EP |
293 | cap_width = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
294 | ||
295 | if (cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ || | |
296 | cap_width == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) | |
297 | return IEEE80211_STA_RX_BW_160; | |
298 | ||
299 | return IEEE80211_STA_RX_BW_80; | |
300 | } | |
301 | ||
302 | static enum ieee80211_sta_rx_bandwidth | |
303 | ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width) | |
304 | { | |
305 | switch (width) { | |
e1a0c6b3 JB |
306 | case NL80211_CHAN_WIDTH_20_NOHT: |
307 | case NL80211_CHAN_WIDTH_20: | |
1c45c5ce | 308 | return IEEE80211_STA_RX_BW_20; |
e1a0c6b3 | 309 | case NL80211_CHAN_WIDTH_40: |
1c45c5ce EP |
310 | return IEEE80211_STA_RX_BW_40; |
311 | case NL80211_CHAN_WIDTH_80: | |
312 | return IEEE80211_STA_RX_BW_80; | |
e1a0c6b3 | 313 | case NL80211_CHAN_WIDTH_160: |
e1a0c6b3 | 314 | case NL80211_CHAN_WIDTH_80P80: |
1c45c5ce EP |
315 | return IEEE80211_STA_RX_BW_160; |
316 | default: | |
317 | WARN_ON_ONCE(1); | |
318 | return IEEE80211_STA_RX_BW_20; | |
e1a0c6b3 | 319 | } |
1c45c5ce EP |
320 | } |
321 | ||
322 | enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta) | |
323 | { | |
324 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
325 | enum ieee80211_sta_rx_bandwidth bw; | |
b98fb44f | 326 | enum nl80211_chan_width bss_width = sdata->vif.bss_conf.chandef.width; |
1c45c5ce | 327 | |
b98fb44f | 328 | bw = ieee80211_sta_cap_rx_bw(sta); |
1c45c5ce | 329 | bw = min(bw, sta->cur_max_bandwidth); |
0af83d3d | 330 | |
b98fb44f AN |
331 | /* do not cap the BW of TDLS WIDER_BW peers by the bss */ |
332 | if (!test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW)) | |
333 | bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width)); | |
334 | ||
0af83d3d | 335 | return bw; |
818255ea | 336 | } |
8921d04e JB |
337 | |
338 | void ieee80211_sta_set_rx_nss(struct sta_info *sta) | |
339 | { | |
340 | u8 ht_rx_nss = 0, vht_rx_nss = 0; | |
341 | ||
342 | /* if we received a notification already don't overwrite it */ | |
343 | if (sta->sta.rx_nss) | |
344 | return; | |
345 | ||
346 | if (sta->sta.ht_cap.ht_supported) { | |
347 | if (sta->sta.ht_cap.mcs.rx_mask[0]) | |
348 | ht_rx_nss++; | |
349 | if (sta->sta.ht_cap.mcs.rx_mask[1]) | |
350 | ht_rx_nss++; | |
351 | if (sta->sta.ht_cap.mcs.rx_mask[2]) | |
352 | ht_rx_nss++; | |
353 | if (sta->sta.ht_cap.mcs.rx_mask[3]) | |
354 | ht_rx_nss++; | |
355 | /* FIXME: consider rx_highest? */ | |
356 | } | |
357 | ||
358 | if (sta->sta.vht_cap.vht_supported) { | |
359 | int i; | |
360 | u16 rx_mcs_map; | |
361 | ||
362 | rx_mcs_map = le16_to_cpu(sta->sta.vht_cap.vht_mcs.rx_mcs_map); | |
363 | ||
364 | for (i = 7; i >= 0; i--) { | |
365 | u8 mcs = (rx_mcs_map >> (2 * i)) & 3; | |
366 | ||
367 | if (mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED) { | |
368 | vht_rx_nss = i + 1; | |
369 | break; | |
370 | } | |
371 | } | |
372 | /* FIXME: consider rx_highest? */ | |
373 | } | |
374 | ||
375 | ht_rx_nss = max(ht_rx_nss, vht_rx_nss); | |
376 | sta->sta.rx_nss = max_t(u8, 1, ht_rx_nss); | |
377 | } | |
0af83d3d | 378 | |
b1bce14a MK |
379 | u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, |
380 | struct sta_info *sta, u8 opmode, | |
381 | enum ieee80211_band band, bool nss_only) | |
0af83d3d JB |
382 | { |
383 | struct ieee80211_local *local = sdata->local; | |
384 | struct ieee80211_supported_band *sband; | |
385 | enum ieee80211_sta_rx_bandwidth new_bw; | |
386 | u32 changed = 0; | |
387 | u8 nss; | |
388 | ||
389 | sband = local->hw.wiphy->bands[band]; | |
390 | ||
391 | /* ignore - no support for BF yet */ | |
392 | if (opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF) | |
b1bce14a | 393 | return 0; |
0af83d3d JB |
394 | |
395 | nss = opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
396 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
397 | nss += 1; | |
398 | ||
399 | if (sta->sta.rx_nss != nss) { | |
400 | sta->sta.rx_nss = nss; | |
401 | changed |= IEEE80211_RC_NSS_CHANGED; | |
402 | } | |
403 | ||
bee7f586 | 404 | if (nss_only) |
b1bce14a | 405 | return changed; |
bee7f586 | 406 | |
0af83d3d JB |
407 | switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) { |
408 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ: | |
409 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20; | |
410 | break; | |
411 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ: | |
412 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_40; | |
413 | break; | |
414 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ: | |
415 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_80; | |
416 | break; | |
417 | case IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ: | |
418 | sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_160; | |
419 | break; | |
420 | } | |
421 | ||
422 | new_bw = ieee80211_sta_cur_vht_bw(sta); | |
423 | if (new_bw != sta->sta.bandwidth) { | |
424 | sta->sta.bandwidth = new_bw; | |
38745c74 | 425 | changed |= IEEE80211_RC_BW_CHANGED; |
0af83d3d JB |
426 | } |
427 | ||
b1bce14a MK |
428 | return changed; |
429 | } | |
430 | ||
431 | void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, | |
432 | struct sta_info *sta, u8 opmode, | |
433 | enum ieee80211_band band, bool nss_only) | |
434 | { | |
435 | struct ieee80211_local *local = sdata->local; | |
436 | struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; | |
437 | ||
438 | u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode, | |
439 | band, nss_only); | |
440 | ||
441 | if (changed > 0) | |
0af83d3d JB |
442 | rate_control_rate_update(local, sband, sta, changed); |
443 | } | |
b119ad6e LB |
444 | |
445 | void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, | |
446 | u16 vht_mask[NL80211_VHT_NSS_MAX]) | |
447 | { | |
448 | int i; | |
449 | u16 mask, cap = le16_to_cpu(vht_cap); | |
450 | ||
451 | for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { | |
452 | mask = (cap >> i * 2) & IEEE80211_VHT_MCS_NOT_SUPPORTED; | |
453 | switch (mask) { | |
454 | case IEEE80211_VHT_MCS_SUPPORT_0_7: | |
455 | vht_mask[i] = 0x00FF; | |
456 | break; | |
457 | case IEEE80211_VHT_MCS_SUPPORT_0_8: | |
458 | vht_mask[i] = 0x01FF; | |
459 | break; | |
460 | case IEEE80211_VHT_MCS_SUPPORT_0_9: | |
461 | vht_mask[i] = 0x03FF; | |
462 | break; | |
463 | case IEEE80211_VHT_MCS_NOT_SUPPORTED: | |
464 | default: | |
465 | vht_mask[i] = 0; | |
466 | break; | |
467 | } | |
468 | } | |
469 | } |