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authorLuca Coelho <luciano.coelho@intel.com>2018-06-09 09:14:44 +0300
committerJohannes Berg <johannes.berg@intel.com>2018-06-18 23:40:32 +0300
commit41cbb0f5a29592874355e4159489eb08337cd50e (patch)
treeee56f9b9754452ae89a6f9b89efc63d2c360a50a /net/mac80211/he.c
parentb8042b3da925f390c1482bf9dc0898dc0b3ea7b5 (diff)
downloadlinux-41cbb0f5a29592874355e4159489eb08337cd50e.tar.xz
mac80211: add support for HE
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>
Diffstat (limited to 'net/mac80211/he.c')
-rw-r--r--net/mac80211/he.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/net/mac80211/he.c b/net/mac80211/he.c
new file mode 100644
index 000000000000..769078ed5a12
--- /dev/null
+++ b/net/mac80211/he.c
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ */
+
+#include "ieee80211_i.h"
+
+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;
+
+ memset(he_cap, 0, sizeof(*he_cap));
+
+ if (!he_cap_ie || !ieee80211_get_he_sta_cap(sband))
+ return;
+
+ /* 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;
+
+ memcpy(&he_cap->he_cap_elem, he_cap_ie, sizeof(he_cap->he_cap_elem));
+
+ /* 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);
+
+ /* 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);
+
+ he_cap->has_he = true;
+}