1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright(c) 2017 Intel Deutschland GmbH
6 * Copyright(c) 2019 - 2022 Intel Corporation
9 #include "ieee80211_i.h"
12 ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
13 struct link_sta_info *link_sta)
15 struct sta_info *sta = link_sta->sta;
16 enum ieee80211_smps_mode smps_mode;
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;
26 case WLAN_HT_CAP_SM_PS_DYNAMIC:
27 smps_mode = IEEE80211_SMPS_DYNAMIC;
29 case WLAN_HT_CAP_SM_PS_DISABLED:
30 smps_mode = IEEE80211_SMPS_OFF;
34 sta->sta.smps_mode = smps_mode;
36 sta->sta.smps_mode = IEEE80211_SMPS_OFF;
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:
42 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
44 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
45 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
47 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
49 sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
53 link_sta->pub->he_6ghz_capa = *he_6ghz_capa;
56 static void ieee80211_he_mcs_disable(__le16 *he_mcs)
60 for (i = 0; i < 8; i++)
61 *he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
64 static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx,
65 __le16 *he_own_tx, __le16 *he_peer_tx)
68 u16 own_rx, own_tx, peer_rx, peer_tx;
70 for (i = 0; i < 8; i++) {
71 own_rx = le16_to_cpu(*he_own_rx);
72 own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
74 own_tx = le16_to_cpu(*he_own_tx);
75 own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
77 peer_rx = le16_to_cpu(*he_peer_rx);
78 peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
80 peer_tx = le16_to_cpu(*he_peer_tx);
81 peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
83 if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
84 if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED)
85 peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED;
86 else if (own_rx < peer_tx)
90 if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
91 if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED)
92 peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED;
93 else if (own_tx < peer_rx)
98 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
99 *he_peer_rx |= cpu_to_le16(peer_rx << i * 2);
102 ~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
103 *he_peer_tx |= cpu_to_le16(peer_tx << i * 2);
108 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
109 struct ieee80211_supported_band *sband,
110 const u8 *he_cap_ie, u8 he_cap_len,
111 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
112 struct link_sta_info *link_sta)
114 struct ieee80211_sta_he_cap *he_cap = &link_sta->pub->he_cap;
115 struct ieee80211_sta_he_cap own_he_cap;
116 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
120 bool own_160, peer_160, own_80p80, peer_80p80;
122 memset(he_cap, 0, sizeof(*he_cap));
125 !ieee80211_get_he_iftype_cap(sband,
126 ieee80211_vif_type_p2p(&sdata->vif)))
129 own_he_cap = sband->iftype_data->he_cap;
131 /* Make sure size is OK */
132 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem);
134 ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) +
136 he_cap_ie_elem->phy_cap_info);
137 he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size +
139 if (he_cap_len < he_total_size)
142 memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem));
144 /* HE Tx/Rx HE MCS NSS Support Field */
145 memcpy(&he_cap->he_mcs_nss_supp,
146 &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size);
148 /* Check if there are (optional) PPE Thresholds */
149 if (he_cap->he_cap_elem.phy_cap_info[6] &
150 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)
151 memcpy(he_cap->ppe_thres,
152 &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size],
155 he_cap->has_he = true;
157 link_sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(link_sta);
158 link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta);
160 if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa)
161 ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, link_sta);
163 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80,
164 &he_cap->he_mcs_nss_supp.rx_mcs_80,
165 &own_he_cap.he_mcs_nss_supp.tx_mcs_80,
166 &he_cap->he_mcs_nss_supp.tx_mcs_80);
168 own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] &
169 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
170 peer_160 = he_cap->he_cap_elem.phy_cap_info[0] &
171 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
173 if (peer_160 && own_160) {
174 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160,
175 &he_cap->he_mcs_nss_supp.rx_mcs_160,
176 &own_he_cap.he_mcs_nss_supp.tx_mcs_160,
177 &he_cap->he_mcs_nss_supp.tx_mcs_160);
178 } else if (peer_160 && !own_160) {
179 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160);
180 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160);
181 he_cap->he_cap_elem.phy_cap_info[0] &=
182 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
185 own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] &
186 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
187 peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] &
188 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
190 if (peer_80p80 && own_80p80) {
191 ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80,
192 &he_cap->he_mcs_nss_supp.rx_mcs_80p80,
193 &own_he_cap.he_mcs_nss_supp.tx_mcs_80p80,
194 &he_cap->he_mcs_nss_supp.tx_mcs_80p80);
195 } else if (peer_80p80 && !own_80p80) {
196 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80);
197 ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
198 he_cap->he_cap_elem.phy_cap_info[0] &=
199 ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
204 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
205 const struct ieee80211_he_operation *he_op_ie)
207 memset(&vif->bss_conf.he_oper, 0, sizeof(vif->bss_conf.he_oper));
211 vif->bss_conf.he_oper.params = __le32_to_cpu(he_op_ie->he_oper_params);
212 vif->bss_conf.he_oper.nss_set = __le16_to_cpu(he_op_ie->he_mcs_nss_set);
216 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
217 const struct ieee80211_he_spr *he_spr_ie_elem)
219 struct ieee80211_he_obss_pd *he_obss_pd =
220 &vif->bss_conf.he_obss_pd;
223 memset(he_obss_pd, 0, sizeof(*he_obss_pd));
227 data = he_spr_ie_elem->optional;
229 if (he_spr_ie_elem->he_sr_control &
230 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
232 if (he_spr_ie_elem->he_sr_control &
233 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) {
234 he_obss_pd->max_offset = *data++;
235 he_obss_pd->min_offset = *data++;
236 he_obss_pd->enable = true;