1 files changed, 26 insertions, 7 deletions

diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index a71d891794a4..61ac7c48ac0c 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -62,6 +62,9 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
         __check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_SUP_WIDTH_20_40);
         __check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_SGI_40);
 
+        /* Allow user to disable SGI-20 (SGI-40 is handled above) */
+        __check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_SGI_20);
+
         /* Allow user to disable the max-AMSDU bit. */
         __check_htcap_disable(sdata, ht_cap, IEEE80211_HT_CAP_MAX_AMSDU);
 
@@ -117,6 +120,21 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
                    IEEE80211_HT_CAP_SGI_20 |
                    IEEE80211_HT_CAP_SGI_40 |
                    IEEE80211_HT_CAP_DSSSCCK40));
+
+        /* Unset 40 MHz if we're not using a 40 MHz channel */
+        switch (sdata->vif.bss_conf.chandef.width) {
+        case NL80211_CHAN_WIDTH_20_NOHT:
+        case NL80211_CHAN_WIDTH_20:
+                ht_cap->cap &= ~IEEE80211_HT_CAP_SGI_40;
+                ht_cap->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+                break;
+        case NL80211_CHAN_WIDTH_40:
+        case NL80211_CHAN_WIDTH_80:
+        case NL80211_CHAN_WIDTH_80P80:
+        case NL80211_CHAN_WIDTH_160:
+                break;
+        }
+
         /*
          * The STBC bits are asymmetric -- if we don't have
          * TX then mask out the peer's RX and vice versa.
@@ -179,16 +197,19 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
         ieee80211_apply_htcap_overrides(sdata, ht_cap);
 }
 
-void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx)
+void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
+                                         enum ieee80211_agg_stop_reason reason)
 {
         int i;
 
         cancel_work_sync(&sta->ampdu_mlme.work);
 
         for (i = 0; i <  IEEE80211_NUM_TIDS; i++) {
-                __ieee80211_stop_tx_ba_session(sta, i, WLAN_BACK_INITIATOR, tx);
+                __ieee80211_stop_tx_ba_session(sta, i, reason);
                 __ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT,
-                                               WLAN_REASON_QSTA_LEAVE_QBSS, tx);
+                                               WLAN_REASON_QSTA_LEAVE_QBSS,
+                                               reason != AGG_STOP_DESTROY_STA &&
+                                               reason != AGG_STOP_PEER_REQUEST);
         }
 }
 
@@ -245,8 +266,7 @@ void ieee80211_ba_session_work(struct work_struct *work)
                 if (tid_tx && test_and_clear_bit(HT_AGG_STATE_WANT_STOP,
                                                  &tid_tx->state))
                         ___ieee80211_stop_tx_ba_session(sta, tid,
-                                                        WLAN_BACK_INITIATOR,
-                                                        true);
+                                                        AGG_STOP_LOCAL_REQUEST);
         }
         mutex_unlock(&sta->ampdu_mlme.mtx);
 }
@@ -314,8 +334,7 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
                 __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0,
                                                true);
         else
-                __ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
-                                               true);
+                __ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_PEER_REQUEST);
 }
 
 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,