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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
41cbb0f5 LC |
2 | /* |
3 | * HE handling | |
4 | * | |
5 | * Copyright(c) 2017 Intel Deutschland GmbH | |
c37ab22b | 6 | * Copyright(c) 2019 - 2023 Intel Corporation |
41cbb0f5 LC |
7 | */ |
8 | ||
9 | #include "ieee80211_i.h" | |
10 | ||
1bb9a8a4 JB |
11 | static void |
12 | ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa, | |
c71420db | 13 | struct link_sta_info *link_sta) |
1bb9a8a4 | 14 | { |
c71420db | 15 | struct sta_info *sta = link_sta->sta; |
1bb9a8a4 JB |
16 | enum ieee80211_smps_mode smps_mode; |
17 | ||
18 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || | |
19 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
20 | switch (le16_get_bits(he_6ghz_capa->capa, | |
21 | IEEE80211_HE_6GHZ_CAP_SM_PS)) { | |
22 | case WLAN_HT_CAP_SM_PS_INVALID: | |
23 | case WLAN_HT_CAP_SM_PS_STATIC: | |
24 | smps_mode = IEEE80211_SMPS_STATIC; | |
25 | break; | |
26 | case WLAN_HT_CAP_SM_PS_DYNAMIC: | |
27 | smps_mode = IEEE80211_SMPS_DYNAMIC; | |
28 | break; | |
29 | case WLAN_HT_CAP_SM_PS_DISABLED: | |
30 | smps_mode = IEEE80211_SMPS_OFF; | |
31 | break; | |
32 | } | |
33 | ||
261ce887 | 34 | link_sta->pub->smps_mode = smps_mode; |
1bb9a8a4 | 35 | } else { |
261ce887 | 36 | link_sta->pub->smps_mode = IEEE80211_SMPS_OFF; |
1bb9a8a4 JB |
37 | } |
38 | ||
39 | switch (le16_get_bits(he_6ghz_capa->capa, | |
40 | IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) { | |
41 | case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: | |
4c51541d | 42 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; |
1bb9a8a4 JB |
43 | break; |
44 | case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: | |
4c51541d | 45 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; |
1bb9a8a4 JB |
46 | break; |
47 | case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: | |
48 | default: | |
4c51541d | 49 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; |
1bb9a8a4 JB |
50 | break; |
51 | } | |
52 | ||
4c51541d BB |
53 | ieee80211_sta_recalc_aggregates(&sta->sta); |
54 | ||
c71420db | 55 | link_sta->pub->he_6ghz_capa = *he_6ghz_capa; |
1bb9a8a4 JB |
56 | } |
57 | ||
7f7aa94b WG |
58 | static void ieee80211_he_mcs_disable(__le16 *he_mcs) |
59 | { | |
60 | u32 i; | |
61 | ||
62 | for (i = 0; i < 8; i++) | |
63 | *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); | |
64 | } | |
65 | ||
66 | static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx, | |
67 | __le16 *he_own_tx, __le16 *he_peer_tx) | |
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_rx); | |
74 | own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; | |
75 | ||
76 | own_tx = le16_to_cpu(*he_own_tx); | |
77 | own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; | |
78 | ||
79 | peer_rx = le16_to_cpu(*he_peer_rx); | |
80 | peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; | |
81 | ||
82 | peer_tx = le16_to_cpu(*he_peer_tx); | |
83 | peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED; | |
84 | ||
85 | if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) { | |
86 | if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED) | |
87 | peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED; | |
88 | else if (own_rx < peer_tx) | |
89 | peer_tx = own_rx; | |
90 | } | |
91 | ||
92 | if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) { | |
93 | if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED) | |
94 | peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED; | |
95 | else if (own_tx < peer_rx) | |
96 | peer_rx = own_tx; | |
97 | } | |
98 | ||
99 | *he_peer_rx &= | |
100 | ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); | |
101 | *he_peer_rx |= cpu_to_le16(peer_rx << i * 2); | |
102 | ||
103 | *he_peer_tx &= | |
104 | ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2); | |
105 | *he_peer_tx |= cpu_to_le16(peer_tx << i * 2); | |
106 | } | |
107 | } | |
108 | ||
41cbb0f5 LC |
109 | void |
110 | ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, | |
111 | struct ieee80211_supported_band *sband, | |
112 | const u8 *he_cap_ie, u8 he_cap_len, | |
1bb9a8a4 | 113 | const struct ieee80211_he_6ghz_capa *he_6ghz_capa, |
c71420db | 114 | struct link_sta_info *link_sta) |
41cbb0f5 | 115 | { |
c71420db | 116 | struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap; |
c37ab22b | 117 | const struct ieee80211_sta_he_cap *own_he_cap_ptr; |
95f83ee8 | 118 | struct ieee80211_sta_he_cap own_he_cap; |
41cbb0f5 LC |
119 | struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; |
120 | u8 he_ppe_size; | |
121 | u8 mcs_nss_size; | |
122 | u8 he_total_size; | |
7f7aa94b | 123 | bool own_160, peer_160, own_80p80, peer_80p80; |
41cbb0f5 LC |
124 | |
125 | memset(he_cap, 0, sizeof(*he_cap)); | |
126 | ||
c37ab22b | 127 | if (!he_cap_ie) |
41cbb0f5 LC |
128 | return; |
129 | ||
c37ab22b | 130 | own_he_cap_ptr = |
1ec7291e | 131 | ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); |
c37ab22b JB |
132 | if (!own_he_cap_ptr) |
133 | return; | |
134 | ||
135 | own_he_cap = *own_he_cap_ptr; | |
95f83ee8 | 136 | |
41cbb0f5 LC |
137 | /* Make sure size is OK */ |
138 | mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); | |
139 | he_ppe_size = | |
140 | ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + | |
141 | mcs_nss_size], | |
142 | he_cap_ie_elem->phy_cap_info); | |
143 | he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + | |
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, sizeof(he_cap->he_cap_elem)); | |
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_cap_elem)], mcs_nss_size); | |
153 | ||
154 | /* Check if there are (optional) PPE Thresholds */ | |
155 | if (he_cap->he_cap_elem.phy_cap_info[6] & | |
156 | IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) | |
157 | memcpy(he_cap->ppe_thres, | |
158 | &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], | |
159 | he_ppe_size); | |
160 | ||
161 | he_cap->has_he = true; | |
cf2c9cc3 | 162 | |
c71420db JB |
163 | link_sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(link_sta); |
164 | link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta); | |
1bb9a8a4 JB |
165 | |
166 | if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa) | |
c71420db | 167 | ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, link_sta); |
7f7aa94b WG |
168 | |
169 | ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80, | |
170 | &he_cap->he_mcs_nss_supp.rx_mcs_80, | |
171 | &own_he_cap.he_mcs_nss_supp.tx_mcs_80, | |
172 | &he_cap->he_mcs_nss_supp.tx_mcs_80); | |
173 | ||
174 | own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] & | |
175 | IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; | |
176 | peer_160 = he_cap->he_cap_elem.phy_cap_info[0] & | |
177 | IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; | |
178 | ||
179 | if (peer_160 && own_160) { | |
180 | ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160, | |
181 | &he_cap->he_mcs_nss_supp.rx_mcs_160, | |
182 | &own_he_cap.he_mcs_nss_supp.tx_mcs_160, | |
183 | &he_cap->he_mcs_nss_supp.tx_mcs_160); | |
184 | } else if (peer_160 && !own_160) { | |
185 | ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160); | |
186 | ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160); | |
187 | he_cap->he_cap_elem.phy_cap_info[0] &= | |
188 | ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; | |
189 | } | |
190 | ||
191 | own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] & | |
192 | IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; | |
193 | peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] & | |
194 | IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; | |
195 | ||
196 | if (peer_80p80 && own_80p80) { | |
197 | ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80, | |
198 | &he_cap->he_mcs_nss_supp.rx_mcs_80p80, | |
199 | &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80, | |
200 | &he_cap->he_mcs_nss_supp.tx_mcs_80p80); | |
201 | } else if (peer_80p80 && !own_80p80) { | |
202 | ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80); | |
203 | ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80); | |
204 | he_cap->he_cap_elem.phy_cap_info[0] &= | |
205 | ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G; | |
206 | } | |
41cbb0f5 | 207 | } |
697f6c50 JC |
208 | |
209 | void | |
210 | ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, | |
60689de4 | 211 | const struct ieee80211_he_operation *he_op_ie) |
697f6c50 | 212 | { |
60689de4 RM |
213 | memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper)); |
214 | if (!he_op_ie) | |
697f6c50 | 215 | return; |
697f6c50 | 216 | |
60689de4 RM |
217 | vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params); |
218 | vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set); | |
697f6c50 | 219 | } |
1ced169c JC |
220 | |
221 | void | |
222 | ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, | |
223 | const struct ieee80211_he_spr *he_spr_ie_elem) | |
224 | { | |
225 | struct ieee80211_he_obss_pd *he_obss_pd = | |
226 | &vif->bss_conf.he_obss_pd; | |
5db16ba8 | 227 | const u8 *data; |
1ced169c JC |
228 | |
229 | memset(he_obss_pd, 0, sizeof(*he_obss_pd)); | |
230 | ||
231 | if (!he_spr_ie_elem) | |
232 | return; | |
5db16ba8 | 233 | data = he_spr_ie_elem->optional; |
1ced169c JC |
234 | |
235 | if (he_spr_ie_elem->he_sr_control & | |
236 | IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT) | |
237 | data++; | |
238 | if (he_spr_ie_elem->he_sr_control & | |
239 | IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) { | |
240 | he_obss_pd->max_offset = *data++; | |
241 | he_obss_pd->min_offset = *data++; | |
242 | he_obss_pd->enable = true; | |
243 | } | |
244 | } |