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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>
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Original file line number | Diff line number | Diff line change |
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/* | ||
* HE handling | ||
* | ||
* Copyright(c) 2017 Intel Deutschland GmbH | ||
* | ||
* This program is free software; you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License version 2 as | ||
* published by the Free Software Foundation. | ||
*/ | ||
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#include "ieee80211_i.h" | ||
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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) | ||
{ | ||
struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap; | ||
struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie; | ||
u8 he_ppe_size; | ||
u8 mcs_nss_size; | ||
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)) | ||
return; | ||
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/* Make sure size is OK */ | ||
mcs_nss_size = ieee80211_he_mcs_nss_size(he_cap_ie_elem); | ||
he_ppe_size = | ||
ieee80211_he_ppe_size(he_cap_ie[sizeof(he_cap->he_cap_elem) + | ||
mcs_nss_size], | ||
he_cap_ie_elem->phy_cap_info); | ||
he_total_size = sizeof(he_cap->he_cap_elem) + mcs_nss_size + | ||
he_ppe_size; | ||
if (he_cap_len < he_total_size) | ||
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 */ | ||
memcpy(&he_cap->he_mcs_nss_supp, | ||
&he_cap_ie[sizeof(he_cap->he_cap_elem)], mcs_nss_size); | ||
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/* Check if there are (optional) PPE Thresholds */ | ||
if (he_cap->he_cap_elem.phy_cap_info[6] & | ||
IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) | ||
memcpy(he_cap->ppe_thres, | ||
&he_cap_ie[sizeof(he_cap->he_cap_elem) + mcs_nss_size], | ||
he_ppe_size); | ||
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he_cap->has_he = true; | ||
} |
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