projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 41cbb0f5 LC |
1 | /* |
| 2 | * HE handling | |
| 3 | * | |
| 4 | * Copyright(c) 2017 Intel Deutschland GmbH | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | ||
| 11 | #include "ieee80211_i.h" | |
| 12 | ||
| 13 | void | |
| 14 | ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, | |
| 15 | struct ieee80211_supported_band *sband, | |
| 16 | const u8 *he_cap_ie, u8 he_cap_len, | |
| 17 | struct sta_info *sta) | |
| 18 | { | |
| 19 | struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; | |
| 20 | struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; | |
| 21 | u8 he_ppe_size; | |
| 22 | u8 mcs_nss_size; | |
| 23 | u8 he_total_size; | |
| 24 | ||
| 25 | memset(he_cap, 0, sizeof(*he_cap)); | |
| 26 | ||
| 27 | if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband)) | |
| 28 | return; | |
| 29 | ||
| 30 | /* Make sure size is OK */ | |
| 31 | mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); | |
| 32 | he_ppe_size = | |
| 33 | ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + | |
| 34 | mcs_nss_size], | |
| 35 | he_cap_ie_elem->phy_cap_info); | |
| 36 | he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + | |
| 37 | he_ppe_size; | |
| 38 | if (he_cap_len < he_total_size) | |
| 39 | return; | |
| 40 | ||
| 41 | memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem)); | |
| 42 | ||
| 43 | /* HE Tx/Rx HE MCS NSS Support Field */ | |
| 44 | memcpy(&he_cap->he_mcs_nss_supp, | |
| 45 | &he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); | |
| 46 | ||
| 47 | /* Check if there are (optional) PPE Thresholds */ | |
| 48 | if (he_cap->he_cap_elem.phy_cap_info[6] & | |
| 49 | IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) | |
| 50 | memcpy(he_cap->ppe_thres, | |
| 51 | &he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], | |
| 52 | he_ppe_size); | |
| 53 | ||
| 54 | he_cap->has_he = true; | |
| 55 | } |