[PATCH] mac80211: Update opmode during adding new station

[Marek Kwaczynski <marek.kwaczynski@xxxxxxxxx>]

Update Operating mode is needed when User Space received Assoc
Request contains Operating mode notification element.

Signed-off-by: Marek Kwaczynski <marek.kwaczynski@xxxxxxxxx>
---
 net/mac80211/cfg.c         |    7 +++++++
 net/mac80211/ieee80211_i.h |    3 +++
 net/mac80211/vht.c         |   33 +++++++++++++++++++++------------
 3 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 95667b0..50f0841 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1409,6 +1409,13 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 	 */
 	if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
 		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
+		if (params->vht_opmode_used) {
+			enum ieee80211_band band =
+					    ieee80211_get_sdata_band(sdata);
+			ieee80211_vht_recalc_handle_opmode(sdata, sta,
+							   params->vht_opmode,
+							   band, 0);
+		}
 		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
 	}
 
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 29dc505..13965e1 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1510,6 +1510,9 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
 				    struct sta_info *sta);
 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
+u32 ieee80211_vht_recalc_handle_opmode(struct ieee80211_sub_if_data *sdata,
+				       struct sta_info *sta, u8 opmode,
+				       enum ieee80211_band band, bool nss_only);
 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 				 struct sta_info *sta, u8 opmode,
 				 enum ieee80211_band band, bool nss_only);
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index de01127..463e52c 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -350,21 +350,17 @@ void ieee80211_sta_set_rx_nss(struct sta_info *sta)
 	sta->sta.rx_nss = max_t(u8, 1, ht_rx_nss);
 }
 
-void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
-				 struct sta_info *sta, u8 opmode,
-				 enum ieee80211_band band, bool nss_only)
+u32 ieee80211_vht_recalc_handle_opmode(struct ieee80211_sub_if_data *sdata,
+				       struct sta_info *sta, u8 opmode,
+				       enum ieee80211_band band, bool nss_only)
 {
-	struct ieee80211_local *local = sdata->local;
-	struct ieee80211_supported_band *sband;
 	enum ieee80211_sta_rx_bandwidth new_bw;
-	u32 changed = 0;
 	u8 nss;
-
-	sband = local->hw.wiphy->bands[band];
+	u32 changed = -1;
 
 	/* ignore - no support for BF yet */
 	if (opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)
-		return;
+		return -EOPNOTSUPP;
 
 	nss = opmode & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
 	nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
@@ -376,7 +372,7 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (nss_only)
-		goto change;
+		return changed;
 
 	switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
 	case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:
@@ -398,8 +394,21 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 		sta->sta.bandwidth = new_bw;
 		changed |= IEEE80211_RC_BW_CHANGED;
 	}
+	return changed;
+}
+
+void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
+				 struct sta_info *sta, u8 opmode,
+				 enum ieee80211_band band, bool nss_only)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_supported_band *sband;
+	u32 changed = 0;
+
+	changed = ieee80211_vht_recalc_handle_opmode(sdata, sta, opmode, band,
+						     nss_only);
+	sband = local->hw.wiphy->bands[band];
 
- change:
-	if (changed)
+	if (changed >= 0)
 		rate_control_rate_update(local, sband, sta, changed);
 }
-- 
1.7.9.5

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