1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * HE handling
4 *
5 * Copyright(c) 2017 Intel Deutschland GmbH
6 */
7
8 #include "ieee80211_i.h"
9
10 void
ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data * sdata,struct ieee80211_supported_band * sband,const u8 * he_cap_ie,u8 he_cap_len,struct sta_info * sta)11 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
12 struct ieee80211_supported_band *sband,
13 const u8 *he_cap_ie, u8 he_cap_len,
14 struct sta_info *sta)
15 {
16 struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
17 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
18 u8 he_ppe_size;
19 u8 mcs_nss_size;
20 u8 he_total_size;
21
22 memset(he_cap, 0, sizeof(*he_cap));
23
24 if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband))
25 return;
26
27 /* Make sure size is OK */
28 mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem);
29 he_ppe_size =
30 ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) +
31 mcs_nss_size],
32 he_cap_ie_elem->phy_cap_info);
33 he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size +
34 he_ppe_size;
35 if (he_cap_len < he_total_size)
36 return;
37
38 memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem));
39
40 /* HE Tx/Rx HE MCS NSS Support Field */
41 memcpy(&he_cap->he_mcs_nss_supp,
42 &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size);
43
44 /* Check if there are (optional) PPE Thresholds */
45 if (he_cap->he_cap_elem.phy_cap_info[6] &
46 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)
47 memcpy(he_cap->ppe_thres,
48 &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size],
49 he_ppe_size);
50
51 he_cap->has_he = true;
52 }
53
54 void
ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif * vif,const struct ieee80211_he_operation * he_op_ie_elem)55 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
56 const struct ieee80211_he_operation *he_op_ie_elem)
57 {
58 struct ieee80211_he_operation *he_operation =
59 &vif->bss_conf.he_operation;
60
61 if (!he_op_ie_elem) {
62 memset(he_operation, 0, sizeof(*he_operation));
63 return;
64 }
65
66 vif->bss_conf.he_operation = *he_op_ie_elem;
67 }
68
69 void
ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif * vif,const struct ieee80211_he_spr * he_spr_ie_elem)70 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
71 const struct ieee80211_he_spr *he_spr_ie_elem)
72 {
73 struct ieee80211_he_obss_pd *he_obss_pd =
74 &vif->bss_conf.he_obss_pd;
75 const u8 *data;
76
77 memset(he_obss_pd, 0, sizeof(*he_obss_pd));
78
79 if (!he_spr_ie_elem)
80 return;
81 data = he_spr_ie_elem->optional;
82
83 if (he_spr_ie_elem->he_sr_control &
84 IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
85 data++;
86 if (he_spr_ie_elem->he_sr_control &
87 IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) {
88 he_obss_pd->max_offset = *data++;
89 he_obss_pd->min_offset = *data++;
90 he_obss_pd->enable = true;
91 }
92 }
93
