Commit cf1e05c6 authored by Eyal Shapira's avatar Eyal Shapira Committed by Johannes Berg
Browse files

mac80211: handle width changes from opmode notification IE in beacon 



An AP can send an operating channel width change in a beacon
opmode notification IE as long as there's a change in the nss as
well (See 802.11ac-2013 section 10.41).
So don't limit updating to nss only from an opmode notification IE.

Signed-off-by: default avatarEyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent a87da0cb

net/mac80211/cfg.c

+1 −2
Original line number Diff line number Diff line
@@ -1169,8 +1169,7 @@ static int sta_apply_parameters(struct ieee80211_local *local, 
		 * rc isn't initialized here yet, so ignore it

		 */

		__ieee80211_vht_handle_opmode(sdata, sta,

					      params->opmode_notif,

					      band, false);

					      params->opmode_notif, band);

	}



	if (ieee80211_vif_is_mesh(&sdata->vif))

net/mac80211/ieee80211_i.h

+2 −2
Original line number Diff line number Diff line
@@ -1709,10 +1709,10 @@ 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_handle_opmode(struct ieee80211_sub_if_data *sdata,

                                  struct sta_info *sta, u8 opmode,

                                  enum ieee80211_band band, bool nss_only);

				  enum ieee80211_band band);

void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,

				 struct sta_info *sta, u8 opmode,

				 enum ieee80211_band band, bool nss_only);

				 enum ieee80211_band band);

void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,

				      struct ieee80211_sta_vht_cap *vht_cap);

void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,

net/mac80211/mlme.c

+1 −1
Original line number Diff line number Diff line
@@ -3580,7 +3580,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, 


	if (sta && elems.opmode_notif)

		ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,

					    rx_status->band, true);

					    rx_status->band);

	mutex_unlock(&local->sta_mtx);



	changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,

net/mac80211/rx.c

+1 −2
Original line number Diff line number Diff line
@@ -2736,8 +2736,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) 
			opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode;



			ieee80211_vht_handle_opmode(rx->sdata, rx->sta,

						    opmode, status->band,

						    false);

						    opmode, status->band);

			goto handled;

		}

		default:

net/mac80211/vht.c

+3 −7
Original line number Diff line number Diff line
@@ -378,7 +378,7 @@ void ieee80211_sta_set_rx_nss(struct sta_info *sta) 


u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,

				  struct sta_info *sta, u8 opmode,

				  enum ieee80211_band band, bool nss_only)

				  enum ieee80211_band band)

{

	struct ieee80211_local *local = sdata->local;

	struct ieee80211_supported_band *sband;
@@ -401,9 +401,6 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 
		changed |= IEEE80211_RC_NSS_CHANGED;

	}



	if (nss_only)

		return changed;



	switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {

	case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:

		sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20;
@@ -430,13 +427,12 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 


void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,

				 struct sta_info *sta, u8 opmode,

				 enum ieee80211_band band, bool nss_only)

				 enum ieee80211_band band)

{

	struct ieee80211_local *local = sdata->local;

	struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];



	u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode,

						    band, nss_only);

	u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode, band);



	if (changed > 0)

		rate_control_rate_update(local, sband, sta, changed);

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