1 // SPDX-License-Identifier: GPL-2.0-only 1
2 /*
3 * HE handling
4 *
5 * Copyright(c) 2017 Intel Deutschland GmbH
6 * Copyright(c) 2019 - 2023 Intel Corporation
7 */
8
9 #include "ieee80211_i.h"
10
11 static void
12 ieee80211_update_from_he_6ghz_capa(const struc
13 struct link
14 {
15 struct sta_info *sta = link_sta->sta;
16 enum ieee80211_smps_mode smps_mode;
17
18 if (sta->sdata->vif.type == NL80211_IF
19 sta->sdata->vif.type == NL80211_IF
20 switch (le16_get_bits(he_6ghz_
21 IEEE8021
22 case WLAN_HT_CAP_SM_PS_INVALID
23 case WLAN_HT_CAP_SM_PS_STATIC:
24 smps_mode = IEEE80211_
25 break;
26 case WLAN_HT_CAP_SM_PS_DYNAMIC
27 smps_mode = IEEE80211_
28 break;
29 case WLAN_HT_CAP_SM_PS_DISABLE
30 smps_mode = IEEE80211_
31 break;
32 }
33
34 link_sta->pub->smps_mode = smp
35 } else {
36 link_sta->pub->smps_mode = IEE
37 }
38
39 switch (le16_get_bits(he_6ghz_capa->ca
40 IEEE80211_HE_6GH
41 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH
42 link_sta->pub->agg.max_amsdu_l
43 break;
44 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH
45 link_sta->pub->agg.max_amsdu_l
46 break;
47 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH
48 default:
49 link_sta->pub->agg.max_amsdu_l
50 break;
51 }
52
53 ieee80211_sta_recalc_aggregates(&sta->
54
55 link_sta->pub->he_6ghz_capa = *he_6ghz
56 }
57
58 static void ieee80211_he_mcs_disable(__le16 *h
59 {
60 u32 i;
61
62 for (i = 0; i < 8; i++)
63 *he_mcs |= cpu_to_le16(IEEE802
64 }
65
66 static void ieee80211_he_mcs_intersection(__le
67 __le
68 {
69 u32 i;
70 u16 own_rx, own_tx, peer_rx, peer_tx;
71
72 for (i = 0; i < 8; i++) {
73 own_rx = le16_to_cpu(*he_own_r
74 own_rx = (own_rx >> i * 2) & I
75
76 own_tx = le16_to_cpu(*he_own_t
77 own_tx = (own_tx >> i * 2) & I
78
79 peer_rx = le16_to_cpu(*he_peer
80 peer_rx = (peer_rx >> i * 2) &
81
82 peer_tx = le16_to_cpu(*he_peer
83 peer_tx = (peer_tx >> i * 2) &
84
85 if (peer_tx != IEEE80211_HE_MC
86 if (own_rx == IEEE8021
87 peer_tx = IEEE
88 else if (own_rx < peer
89 peer_tx = own_
90 }
91
92 if (peer_rx != IEEE80211_HE_MC
93 if (own_tx == IEEE8021
94 peer_rx = IEEE
95 else if (own_tx < peer
96 peer_rx = own_
97 }
98
99 *he_peer_rx &=
100 ~cpu_to_le16(IEEE80211
101 *he_peer_rx |= cpu_to_le16(pee
102
103 *he_peer_tx &=
104 ~cpu_to_le16(IEEE80211
105 *he_peer_tx |= cpu_to_le16(pee
106 }
107 }
108
109 void
110 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee8
111 struct ieee8
112 const u8 *he
113 const struct
114 struct link_
115 {
116 struct ieee80211_sta_he_cap *he_cap =
117 const struct ieee80211_sta_he_cap *own
118 struct ieee80211_sta_he_cap own_he_cap
119 struct ieee80211_he_cap_elem *he_cap_i
120 u8 he_ppe_size;
121 u8 mcs_nss_size;
122 u8 he_total_size;
123 bool own_160, peer_160, own_80p80, pee
124
125 memset(he_cap, 0, sizeof(*he_cap));
126
127 if (!he_cap_ie)
128 return;
129
130 own_he_cap_ptr =
131 ieee80211_get_he_iftype_cap_vi
132 if (!own_he_cap_ptr)
133 return;
134
135 own_he_cap = *own_he_cap_ptr;
136
137 /* Make sure size is OK */
138 mcs_nss_size = ieee80211_he_mcs_nss_si
139 he_ppe_size =
140 ieee80211_he_ppe_size(he_cap_i
141
142 he_cap_i
143 he_total_size = sizeof(he_cap->he_cap_
144 he_ppe_size;
145 if (he_cap_len < he_total_size)
146 return;
147
148 memcpy(&he_cap->he_cap_elem, he_cap_ie
149
150 /* HE Tx/Rx HE MCS NSS Support Field *
151 memcpy(&he_cap->he_mcs_nss_supp,
152 &he_cap_ie[sizeof(he_cap->he_ca
153
154 /* Check if there are (optional) PPE T
155 if (he_cap->he_cap_elem.phy_cap_info[6
156 IEEE80211_HE_PHY_CAP6_PPE_THRESHOL
157 memcpy(he_cap->ppe_thres,
158 &he_cap_ie[sizeof(he_ca
159 he_ppe_size);
160
161 he_cap->has_he = true;
162
163 link_sta->cur_max_bandwidth = ieee8021
164 link_sta->pub->bandwidth = ieee80211_s
165
166 if (sband->band == NL80211_BAND_6GHZ &
167 ieee80211_update_from_he_6ghz_
168
169 ieee80211_he_mcs_intersection(&own_he_
170 &he_cap-
171 &own_he_
172 &he_cap-
173
174 own_160 = own_he_cap.he_cap_elem.phy_c
175 IEEE80211_HE_PHY_CAP0_CHANNE
176 peer_160 = he_cap->he_cap_elem.phy_cap
177 IEEE80211_HE_PHY_CAP0_CHANN
178
179 if (peer_160 && own_160) {
180 ieee80211_he_mcs_intersection(
181
182
183
184 } else if (peer_160 && !own_160) {
185 ieee80211_he_mcs_disable(&he_c
186 ieee80211_he_mcs_disable(&he_c
187 he_cap->he_cap_elem.phy_cap_in
188 ~IEEE80211_HE_PHY_CAP0
189 }
190
191 own_80p80 = own_he_cap.he_cap_elem.phy
192 IEEE80211_HE_PHY_CAP0_CHAN
193 peer_80p80 = he_cap->he_cap_elem.phy_c
194 IEEE80211_HE_PHY_CAP0_CHA
195
196 if (peer_80p80 && own_80p80) {
197 ieee80211_he_mcs_intersection(
198
199
200
201 } else if (peer_80p80 && !own_80p80) {
202 ieee80211_he_mcs_disable(&he_c
203 ieee80211_he_mcs_disable(&he_c
204 he_cap->he_cap_elem.phy_cap_in
205 ~IEEE80211_HE_PHY_CAP0
206 }
207 }
208
209 void
210 ieee80211_he_op_ie_to_bss_conf(struct ieee8021
211 const struct ieee80211
212 {
213 memset(&vif->bss_conf.he_oper, 0, size
214 if (!he_op_ie)
215 return;
216
217 vif->bss_conf.he_oper.params = __le32_
218 vif->bss_conf.he_oper.nss_set = __le16
219 }
220
221 void
222 ieee80211_he_spr_ie_to_bss_conf(struct ieee802
223 const struct i
224 {
225 struct ieee80211_he_obss_pd *he_obss_p
226 &vif->
227 const u8 *data;
228
229 memset(he_obss_pd, 0, sizeof(*he_obss_
230
231 if (!he_spr_ie_elem)
232 return;
233
234 he_obss_pd->sr_ctrl = he_spr_ie_elem->
235 data = he_spr_ie_elem->optional;
236
237 if (he_spr_ie_elem->he_sr_control &
238 IEEE80211_HE_SPR_NON_SRG_OFFSET_PR
239 he_obss_pd->non_srg_max_offset
240
241 if (he_spr_ie_elem->he_sr_control &
242 IEEE80211_HE_SPR_SRG_INFORMATION_P
243 he_obss_pd->min_offset = *data
244 he_obss_pd->max_offset = *data
245 memcpy(he_obss_pd->bss_color_b
246 data += 8;
247 memcpy(he_obss_pd->partial_bss
248 he_obss_pd->enable = true;
249 }
250 }
251
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