1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright(c) 2021-2022 Intel Corporation
8 #include "ieee80211_i.h"
11 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
12 struct ieee80211_supported_band *sband,
13 const u8 *he_cap_ie, u8 he_cap_len,
14 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
15 u8 eht_cap_len, struct sta_info *sta)
17 struct ieee80211_sta_eht_cap *eht_cap = &sta->sta.deflink.eht_cap;
18 struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
21 u8 eht_total_size = sizeof(eht_cap->eht_cap_elem);
22 u8 *pos = (u8 *)eht_cap_ie_elem;
24 memset(eht_cap, 0, sizeof(*eht_cap));
26 if (!eht_cap_ie_elem ||
27 !ieee80211_get_eht_iftype_cap(sband,
28 ieee80211_vif_type_p2p(&sdata->vif)))
31 mcs_nss_size = ieee80211_eht_mcs_nss_size(he_cap_ie_elem,
32 &eht_cap_ie_elem->fixed);
34 eht_total_size += mcs_nss_size;
36 /* Calculate the PPE thresholds length only if the header is present */
37 if (eht_cap_ie_elem->fixed.phy_cap_info[5] &
38 IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) {
41 if (eht_cap_len < eht_total_size + sizeof(u16))
44 eht_ppe_hdr = get_unaligned_le16(eht_cap_ie_elem->optional + mcs_nss_size);
46 ieee80211_eht_ppe_size(eht_ppe_hdr,
47 eht_cap_ie_elem->fixed.phy_cap_info);
48 eht_total_size += eht_ppe_size;
50 /* we calculate as if NSS > 8 are valid, but don't handle that */
51 if (eht_ppe_size > sizeof(eht_cap->eht_ppe_thres))
55 if (eht_cap_len < eht_total_size)
58 /* Copy the static portion of the EHT capabilities */
59 memcpy(&eht_cap->eht_cap_elem, pos, sizeof(eht_cap->eht_cap_elem));
60 pos += sizeof(eht_cap->eht_cap_elem);
62 /* Copy MCS/NSS which depends on the peer capabilities */
63 memset(&eht_cap->eht_mcs_nss_supp, 0,
64 sizeof(eht_cap->eht_mcs_nss_supp));
65 memcpy(&eht_cap->eht_mcs_nss_supp, pos, mcs_nss_size);
68 memcpy(eht_cap->eht_ppe_thres,
69 &eht_cap_ie_elem->optional[mcs_nss_size],
72 eht_cap->has_eht = true;
74 sta->deflink.cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta);
75 sta->sta.deflink.bandwidth = ieee80211_sta_cur_vht_bw(sta);