mac80211: use HE 6 GHz band capability and pass it to the driver

In order to handle 6 GHz AP side, take the HE 6 GHz band capability
data and pass it to the driver (which needs it for A-MPDU spacing
and A-MPDU length).

Link: https://lore.kernel.org/r/[email protected]
Co-developed-by: Rajkumar Manoharan <[email protected]>
Signed-off-by: Rajkumar Manoharan <[email protected]>
Link: https://lore.kernel.org/r/20200528213443.784e4890d82f.I5f1230d5ab27e84e7bbe88e3645b24ea15a0c146@changeid
Signed-off-by: Johannes Berg <[email protected]>

Author: jmberg-intel

include/net/mac80211.h

@@ -7,7 +7,7 @@
  * Copyright 2007-2010	Johannes Berg <[email protected]>
  * Copyright 2013-2014  Intel Mobile Communications GmbH
  * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
- * Copyright (C) 2018 - 2019 Intel Corporation
+ * Copyright (C) 2018 - 2020 Intel Corporation
  */
 
 #ifndef MAC80211_H
@@ -1977,6 +1977,7 @@ struct ieee80211_sta_txpwr {
  * @ht_cap: HT capabilities of this STA; restricted to our own capabilities
  * @vht_cap: VHT capabilities of this STA; restricted to our own capabilities
  * @he_cap: HE capabilities of this STA
+ * @he_6ghz_capa: on 6 GHz, holds the HE 6 GHz band capabilities
  * @max_rx_aggregation_subframes: maximal amount of frames in a single AMPDU
  *	that this station is allowed to transmit to us.
  *	Can be modified by driver.
@@ -2016,6 +2017,7 @@ struct ieee80211_sta {
 	struct ieee80211_sta_ht_cap ht_cap;
 	struct ieee80211_sta_vht_cap vht_cap;
 	struct ieee80211_sta_he_cap he_cap;
+	struct ieee80211_he_6ghz_capa he_6ghz_capa;
 	u16 max_rx_aggregation_subframes;
 	bool wme;
 	u8 uapsd_queues;

net/mac80211/cfg.c

@@ -1520,7 +1520,9 @@ static int sta_apply_parameters(struct ieee80211_local *local,
 	if (params->he_capa)
 		ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
 						  (void *)params->he_capa,
-						  params->he_capa_len, sta);
+						  params->he_capa_len,
+						  (void *)params->he_6ghz_capa,
+						  sta);
 
 	if (params->opmode_notif_used) {
 		/* returned value is only needed for rc update, but the

net/mac80211/he.c

@@ -8,10 +8,55 @@
 
 #include "ieee80211_i.h"
 
+static void
+ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
+				   struct sta_info *sta)
+{
+	enum ieee80211_smps_mode smps_mode;
+
+	if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
+	    sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+		switch (le16_get_bits(he_6ghz_capa->capa,
+				      IEEE80211_HE_6GHZ_CAP_SM_PS)) {
+		case WLAN_HT_CAP_SM_PS_INVALID:
+		case WLAN_HT_CAP_SM_PS_STATIC:
+			smps_mode = IEEE80211_SMPS_STATIC;
+			break;
+		case WLAN_HT_CAP_SM_PS_DYNAMIC:
+			smps_mode = IEEE80211_SMPS_DYNAMIC;
+			break;
+		case WLAN_HT_CAP_SM_PS_DISABLED:
+			smps_mode = IEEE80211_SMPS_OFF;
+			break;
+		}
+
+		sta->sta.smps_mode = smps_mode;
+	} else {
+		sta->sta.smps_mode = IEEE80211_SMPS_OFF;
+	}
+
+	switch (le16_get_bits(he_6ghz_capa->capa,
+			      IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
+	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
+		sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
+		break;
+	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
+		sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
+		break;
+	case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
+	default:
+		sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
+		break;
+	}
+
+	sta->sta.he_6ghz_capa = *he_6ghz_capa;
+}
+
 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,
+				  const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
 				  struct sta_info *sta)
 {
 	struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
@@ -53,6 +98,9 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
 
 	sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(sta);
 	sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
+
+	if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa)
+		ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta);
 }
 
 void

net/mac80211/ieee80211_i.h

@@ -1899,6 +1899,7 @@ 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,
+				  const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
 				  struct sta_info *sta);
 void
 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,

net/mac80211/mesh_plink.c

@@ -444,7 +444,9 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata,
 					    elems->vht_cap_elem, sta);
 
 	ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, elems->he_cap,
-					  elems->he_cap_len, sta);
+					  elems->he_cap_len,
+					  elems->he_6ghz_capa,
+					  sta);
 
 	if (bw != sta->sta.bandwidth)
 		changed |= IEEE80211_RC_BW_CHANGED;

net/mac80211/mlme.c

@@ -3430,6 +3430,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 		ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
 						  elems->he_cap,
 						  elems->he_cap_len,
+						  elems->he_6ghz_capa,
 						  sta);
 
 		bss_conf->he_support = sta->sta.he_cap.has_he;