mac80211: Add support to notify ht/vht opmode modification.

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@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index fd58061..e755f93 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2848,6 +2848,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
                case WLAN_HT_ACTION_SMPS: {
                        struct ieee80211_supported_band *sband;
                        enum ieee80211_smps_mode smps_mode;
+                       struct sta_opmode_info sta_opmode = {};
 
                        /* convert to HT capability */
                        switch (mgmt->u.action.u.ht_smps.smps_control) {
@@ -2868,17 +2869,24 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
                        if (rx->sta->sta.smps_mode == smps_mode)
                                goto handled;
                        rx->sta->sta.smps_mode = smps_mode;
+                       sta_opmode.smps_mode = smps_mode;
+                       sta_opmode.changed = STA_OPMODE_SMPS_MODE_CHANGED;
 
                        sband = rx->local->hw.wiphy->bands[status->band];
 
                        rate_control_rate_update(local, sband, rx->sta,
                                                 IEEE80211_RC_SMPS_CHANGED);
+                       cfg80211_sta_opmode_change_notify(sdata->dev,
+                                                         rx->sta->addr,
+                                                         &sta_opmode,
+                                                         GFP_KERNEL);
                        goto handled;
                }
                case WLAN_HT_ACTION_NOTIFY_CHANWIDTH: {
                        struct ieee80211_supported_band *sband;
                        u8 chanwidth = mgmt->u.action.u.ht_notify_cw.chanwidth;
                        enum ieee80211_sta_rx_bandwidth max_bw, new_bw;
+                       struct sta_opmode_info sta_opmode = {};
 
                        /* If it doesn't support 40 MHz it can't change ... */
                        if (!(rx->sta->sta.ht_cap.cap &
@@ -2899,9 +2907,15 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
 
                        rx->sta->sta.bandwidth = new_bw;
                        sband = rx->local->hw.wiphy->bands[status->band];
+                       sta_opmode.bw = new_bw;
+                       sta_opmode.changed = STA_OPMODE_MAX_BW_CHANGED;
 
                        rate_control_rate_update(local, sband, rx->sta,
                                                 IEEE80211_RC_BW_CHANGED);
+                       cfg80211_sta_opmode_change_notify(sdata->dev,
+                                                         rx->sta->addr,
+                                                         &sta_opmode,
+                                                         GFP_KERNEL);
                        goto handled;
                }
                default:

diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index b9276ac..5714dee 100644 (file)
--- 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;
+       struct sta_opmode_info sta_opmode = {};
        u32 changed = 0;
        u8 nss;
 
@@ -460,7 +461,9 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
 
        if (sta->sta.rx_nss != nss) {
                sta->sta.rx_nss = nss;
+               sta_opmode.rx_nss = nss;
                changed |= IEEE80211_RC_NSS_CHANGED;
+               sta_opmode.changed |= STA_OPMODE_N_SS_CHANGED;
        }
 
        switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
@@ -481,9 +484,15 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
        new_bw = ieee80211_sta_cur_vht_bw(sta);
        if (new_bw != sta->sta.bandwidth) {
                sta->sta.bandwidth = new_bw;
+               sta_opmode.bw = new_bw;
                changed |= IEEE80211_RC_BW_CHANGED;
+               sta_opmode.changed |= STA_OPMODE_MAX_BW_CHANGED;
        }
 
+       if (sta_opmode.changed)
+               cfg80211_sta_opmode_change_notify(sdata->dev, sta->addr,
+                                                 &sta_opmode, GFP_KERNEL);
+
        return changed;
 }