---

yaml
---
r: 256477
b: refs/heads/master
c: 95acac6
h: refs/heads/master
i:
  256475: 956be94
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2fcf282471f04f465d0368e46e973e01504292b3
+refs/heads/master: 95acac61ba66c4abd40e038dae8c1ed2e176c7b1

trunk/include/net/mac80211.h

@@ -3023,6 +3023,29 @@ void ieee80211_beacon_loss(struct ieee80211_vif *vif);
  */
 void ieee80211_connection_loss(struct ieee80211_vif *vif);
 
+/**
+ * ieee80211_resume_disconnect - disconnect from AP after resume
+ *
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ *
+ * Instructs mac80211 to disconnect from the AP after resume.
+ * Drivers can use this after WoWLAN if they know that the
+ * connection cannot be kept up, for example because keys were
+ * used while the device was asleep but the replay counters or
+ * similar cannot be retrieved from the device during resume.
+ *
+ * Note that due to implementation issues, if the driver uses
+ * the reconfiguration functionality during resume the interface
+ * will still be added as associated first during resume and then
+ * disconnect normally later.
+ *
+ * This function can only be called from the resume callback and
+ * the driver must not be holding any of its own locks while it
+ * calls this function, or at least not any locks it needs in the
+ * key configuration paths (if it supports HW crypto).
+ */
+void ieee80211_resume_disconnect(struct ieee80211_vif *vif);
+
 /**
  * ieee80211_disable_dyn_ps - force mac80211 to temporarily disable dynamic psm
  *

trunk/net/mac80211/ieee80211_i.h

@@ -538,12 +538,14 @@ struct ieee80211_if_mesh {
  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
  *	associated stations and deliver multicast frames both
  *	back to wireless media and to the local net stack.
+ * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
  */
 enum ieee80211_sub_if_data_flags {
 	IEEE80211_SDATA_ALLMULTI		= BIT(0),
 	IEEE80211_SDATA_PROMISC			= BIT(1),
 	IEEE80211_SDATA_OPERATING_GMODE		= BIT(2),
 	IEEE80211_SDATA_DONT_BRIDGE_PACKETS	= BIT(3),
+	IEEE80211_SDATA_DISCONNECT_RESUME	= BIT(4),
 };
 
 /**

trunk/net/mac80211/key.h

@@ -41,9 +41,11 @@ struct sta_info;
  *
  * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present
  *	in the hardware for TX crypto hardware acceleration.
+ * @KEY_FLAG_TAINTED: Key is tainted and packets should be dropped.
  */
 enum ieee80211_internal_key_flags {
 	KEY_FLAG_UPLOADED_TO_HARDWARE	= BIT(0),
+	KEY_FLAG_TAINTED		= BIT(1),
 };
 
 enum ieee80211_internal_tkip_state {

trunk/net/mac80211/mlme.c

@@ -2052,7 +2052,7 @@ static void ieee80211_sta_timer(unsigned long data)
 }
 
 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
-					  u8 *bssid)
+					  u8 *bssid, u8 reason)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
@@ -2070,8 +2070,7 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
 	 * but that's not a problem.
 	 */
 	ieee80211_send_deauth_disassoc(sdata, bssid,
-			IEEE80211_STYPE_DEAUTH,
-			WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
+			IEEE80211_STYPE_DEAUTH, reason,
 			NULL, true);
 	mutex_lock(&ifmgd->mtx);
 }
@@ -2117,7 +2116,8 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 					    " AP %pM, disconnecting.\n",
 					    sdata->name, bssid);
 #endif
-				ieee80211_sta_connection_lost(sdata, bssid);
+				ieee80211_sta_connection_lost(sdata, bssid,
+					WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 			}
 		} else if (time_is_after_jiffies(ifmgd->probe_timeout))
 			run_again(ifmgd, ifmgd->probe_timeout);
@@ -2129,7 +2129,8 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 				    sdata->name,
 				    bssid, probe_wait_ms);
 #endif
-			ieee80211_sta_connection_lost(sdata, bssid);
+			ieee80211_sta_connection_lost(sdata, bssid,
+				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 		} else if (ifmgd->probe_send_count < max_tries) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
 			wiphy_debug(local->hw.wiphy,
@@ -2151,7 +2152,8 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
 				    sdata->name,
 				    bssid, probe_wait_ms);
 
-			ieee80211_sta_connection_lost(sdata, bssid);
+			ieee80211_sta_connection_lost(sdata, bssid,
+				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 		}
 	}
 
@@ -2241,6 +2243,24 @@ void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
 	if (!ifmgd->associated)
 		return;
 
+	if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
+		sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
+		mutex_lock(&ifmgd->mtx);
+		if (ifmgd->associated) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+			wiphy_debug(sdata->local->hw.wiphy,
+				    "%s: driver requested disconnect after resume.\n",
+				    sdata->name);
+#endif
+			ieee80211_sta_connection_lost(sdata,
+				ifmgd->associated->bssid,
+				WLAN_REASON_UNSPECIFIED);
+			mutex_unlock(&ifmgd->mtx);
+			return;
+		}
+		mutex_unlock(&ifmgd->mtx);
+	}
+
 	if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running))
 		add_timer(&ifmgd->timer);
 	if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running))

trunk/net/mac80211/rx.c

@@ -1019,6 +1019,9 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 	}
 
 	if (rx->key) {
+		if (unlikely(rx->key->flags & KEY_FLAG_TAINTED))
+			return RX_DROP_MONITOR;
+
 		rx->key->tx_rx_count++;
 		/* TODO: add threshold stuff again */
 	} else {

trunk/net/mac80211/tx.c

@@ -589,6 +589,9 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
 			break;
 		}
 
+		if (unlikely(tx->key && tx->key->flags & KEY_FLAG_TAINTED))
+			return TX_DROP;
+
 		if (!skip_hw && tx->key &&
 		    tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 			info->control.hw_key = &tx->key->conf;

trunk/net/mac80211/util.c

@@ -1334,6 +1334,33 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	return 0;
 }
 
+void ieee80211_resume_disconnect(struct ieee80211_vif *vif)
+{
+	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_local *local;
+	struct ieee80211_key *key;
+
+	if (WARN_ON(!vif))
+		return;
+
+	sdata = vif_to_sdata(vif);
+	local = sdata->local;
+
+	if (WARN_ON(!local->resuming))
+		return;
+
+	if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
+		return;
+
+	sdata->flags |= IEEE80211_SDATA_DISCONNECT_RESUME;
+
+	mutex_lock(&local->key_mtx);
+	list_for_each_entry(key, &sdata->key_list, list)
+		key->flags |= KEY_FLAG_TAINTED;
+	mutex_unlock(&local->key_mtx);
+}
+EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect);
+
 static int check_mgd_smps(struct ieee80211_if_managed *ifmgd,
 			  enum ieee80211_smps_mode *smps_mode)
 {