1 | // SPDX-License-Identifier: GPL-2.0-only |
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 struct ieee80211_he_6ghz_capa *he_6ghz_capa, |
13 | struct link_sta_info *link_sta) |
14 | { |
15 | struct sta_info *sta = link_sta->sta; |
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(v: 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 | |
34 | link_sta->pub->smps_mode = smps_mode; |
35 | } else { |
36 | link_sta->pub->smps_mode = IEEE80211_SMPS_OFF; |
37 | } |
38 | |
39 | switch (le16_get_bits(v: he_6ghz_capa->capa, |
40 | IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) { |
41 | case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454: |
42 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454; |
43 | break; |
44 | case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991: |
45 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991; |
46 | break; |
47 | case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895: |
48 | default: |
49 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895; |
50 | break; |
51 | } |
52 | |
53 | ieee80211_sta_recalc_aggregates(pubsta: &sta->sta); |
54 | |
55 | link_sta->pub->he_6ghz_capa = *he_6ghz_capa; |
56 | } |
57 | |
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 | |
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, |
113 | const struct ieee80211_he_6ghz_capa *he_6ghz_capa, |
114 | struct link_sta_info *link_sta) |
115 | { |
116 | struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap; |
117 | const struct ieee80211_sta_he_cap *own_he_cap_ptr; |
118 | struct ieee80211_sta_he_cap own_he_cap; |
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; |
123 | bool own_160, peer_160, own_80p80, peer_80p80; |
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_vif(sband, vif: &sdata->vif); |
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_size(he_cap: he_cap_ie_elem); |
139 | he_ppe_size = |
140 | ieee80211_he_ppe_size(ppe_thres_hdr: he_cap_ie[sizeof(he_cap->he_cap_elem) + |
141 | mcs_nss_size], |
142 | phy_cap_info: 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; |
162 | |
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); |
165 | |
166 | if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa) |
167 | ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, link_sta); |
168 | |
169 | ieee80211_he_mcs_intersection(he_own_rx: &own_he_cap.he_mcs_nss_supp.rx_mcs_80, |
170 | he_peer_rx: &he_cap->he_mcs_nss_supp.rx_mcs_80, |
171 | he_own_tx: &own_he_cap.he_mcs_nss_supp.tx_mcs_80, |
172 | he_peer_tx: &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(he_own_rx: &own_he_cap.he_mcs_nss_supp.rx_mcs_160, |
181 | he_peer_rx: &he_cap->he_mcs_nss_supp.rx_mcs_160, |
182 | he_own_tx: &own_he_cap.he_mcs_nss_supp.tx_mcs_160, |
183 | he_peer_tx: &he_cap->he_mcs_nss_supp.tx_mcs_160); |
184 | } else if (peer_160 && !own_160) { |
185 | ieee80211_he_mcs_disable(he_mcs: &he_cap->he_mcs_nss_supp.rx_mcs_160); |
186 | ieee80211_he_mcs_disable(he_mcs: &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(he_own_rx: &own_he_cap.he_mcs_nss_supp.rx_mcs_80p80, |
198 | he_peer_rx: &he_cap->he_mcs_nss_supp.rx_mcs_80p80, |
199 | he_own_tx: &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80, |
200 | he_peer_tx: &he_cap->he_mcs_nss_supp.tx_mcs_80p80); |
201 | } else if (peer_80p80 && !own_80p80) { |
202 | ieee80211_he_mcs_disable(he_mcs: &he_cap->he_mcs_nss_supp.rx_mcs_80p80); |
203 | ieee80211_he_mcs_disable(he_mcs: &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 | } |
207 | } |
208 | |
209 | void |
210 | ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, |
211 | const struct ieee80211_he_operation *he_op_ie) |
212 | { |
213 | memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper)); |
214 | if (!he_op_ie) |
215 | return; |
216 | |
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); |
219 | } |
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; |
227 | const u8 *data; |
228 | |
229 | memset(he_obss_pd, 0, sizeof(*he_obss_pd)); |
230 | |
231 | if (!he_spr_ie_elem) |
232 | return; |
233 | data = he_spr_ie_elem->optional; |
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 | } |
245 | |