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41cbb0f5a2
Add support for HE in mac80211 conforming with P802.11ax_D1.4. Johannes: Fix another bug with the buf_size comparison in agg-rx.c. Signed-off-by: Liad Kaufman <liad.kaufman@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Ido Yariv <idox.yariv@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
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* HE handling
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*
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* Copyright(c) 2017 Intel Deutschland GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "ieee80211_i.h"
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void
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ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_supported_band *sband,
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const u8 *he_cap_ie, u8 he_cap_len,
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struct sta_info *sta)
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{
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struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
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struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
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u8 he_ppe_size;
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u8 mcs_nss_size;
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u8 he_total_size;
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memset(he_cap, 0, sizeof(*he_cap));
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if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband))
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return;
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/* Make sure size is OK */
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mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem);
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he_ppe_size =
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ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) +
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mcs_nss_size],
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he_cap_ie_elem->phy_cap_info);
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he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size +
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he_ppe_size;
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if (he_cap_len < he_total_size)
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return;
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memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem));
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/* HE Tx/Rx HE MCS NSS Support Field */
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memcpy(&he_cap->he_mcs_nss_supp,
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&he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size);
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/* Check if there are (optional) PPE Thresholds */
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if (he_cap->he_cap_elem.phy_cap_info[6] &
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IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)
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memcpy(he_cap->ppe_thres,
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&he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size],
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he_ppe_size);
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he_cap->has_he = true;
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}
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