[PATCH 2/2] mac80211: Add support to notify ht/vht opmode modification.

[tamizhr@xxxxxxxxxxxxxx]

From: Tamizh chelvam <tamizhr@xxxxxxxxxxxxxx>

This will add support to send an event to a userspace application
whenever station advertise its ht/vht opmode modification through
an action frame.

Signed-off-by: Tamizh chelvam <tamizhr@xxxxxxxxxxxxxx>
---
 net/mac80211/rx.c  | 15 +++++++++++++++
 net/mac80211/vht.c | 11 +++++++++++
 2 files changed, 26 insertions(+)

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index fd58061..60ec460 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2873,6 +2873,14 @@ static void ieee80211_process_sa_query_req(struct ieee80211_sub_if_data *sdata,
 
 			rate_control_rate_update(local, sband, rx->sta,
 						 IEEE80211_RC_SMPS_CHANGED);
+			cfg80211_sta_opmode_change_notify(
+						sdata->dev,
+						rx->sta->addr,
+						SMPS_MODE_CHANGED,
+						smps_mode,
+						rx->sta->sta.bandwidth,
+						rx->sta->sta.rx_nss,
+						GFP_KERNEL);
 			goto handled;
 		}
 		case WLAN_HT_ACTION_NOTIFY_CHANWIDTH: {
@@ -2902,6 +2910,13 @@ static void ieee80211_process_sa_query_req(struct ieee80211_sub_if_data *sdata,
 
 			rate_control_rate_update(local, sband, rx->sta,
 						 IEEE80211_RC_BW_CHANGED);
+			cfg80211_sta_opmode_change_notify(
+						sdata->dev,
+						rx->sta->addr,
+						MAX_BW_CHANGED,
+						rx->sta->sta.smps_mode,
+						new_bw, rx->sta->sta.rx_nss,
+						GFP_KERNEL);
 			goto handled;
 		}
 		default:
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index b9276ac..f1d7dce 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -447,6 +447,7 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 				  enum nl80211_band band)
 {
 	enum ieee80211_sta_rx_bandwidth new_bw;
+	u8 opmode_changed = 0;
 	u32 changed = 0;
 	u8 nss;
 
@@ -461,6 +462,7 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 	if (sta->sta.rx_nss != nss) {
 		sta->sta.rx_nss = nss;
 		changed |= IEEE80211_RC_NSS_CHANGED;
+		opmode_changed |= N_SS_CHANGED;
 	}
 
 	switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
@@ -482,8 +484,17 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 	if (new_bw != sta->sta.bandwidth) {
 		sta->sta.bandwidth = new_bw;
 		changed |= IEEE80211_RC_BW_CHANGED;
+		opmode_changed |= MAX_BW_CHANGED;
 	}
 
+	if (opmode_changed)
+		cfg80211_sta_opmode_change_notify(sdata->dev, sta->addr,
+						  opmode_changed,
+						  sta->sta.smps_mode,
+						  sta->sta.bandwidth,
+						  sta->sta.rx_nss,
+						  GFP_KERNEL);
+
 	return changed;
 }
 
-- 
1.9.1