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Commit ff84e7bf authored by tamizhr@codeaurora.org's avatar tamizhr@codeaurora.org Committed by Johannes Berg
Browse files

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: default avatarTamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 466b9936

net/mac80211/rx.c

+14 −0
Original line number Diff line number Diff line
@@ -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:

net/mac80211/vht.c

+9 −0
Original line number Diff line number Diff line
@@ -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;

}