Merge tag 'mac80211-next-for-davem-2018-01-04' of git://git.kernel.or…

…g/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
We have things all over the place, no point listing them.

One thing is notable: I applied two patches and later
reverted them - we'll get back to that once all the driver
situation is sorted out.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/mac80211_hwsim.c

@@ -728,16 +728,21 @@ static int hwsim_fops_ps_write(void *dat, u64 val)
 	    val != PS_MANUAL_POLL)
 		return -EINVAL;
 
-	old_ps = data->ps;
-	data->ps = val;
-
-	local_bh_disable();
 	if (val == PS_MANUAL_POLL) {
+		if (data->ps != PS_ENABLED)
+			return -EINVAL;
+		local_bh_disable();
 		ieee80211_iterate_active_interfaces_atomic(
 			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 			hwsim_send_ps_poll, data);
-		data->ps_poll_pending = true;
-	} else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
+		local_bh_enable();
+		return 0;
+	}
+	old_ps = data->ps;
+	data->ps = val;
+
+	local_bh_disable();
+	if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 		ieee80211_iterate_active_interfaces_atomic(
 			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 			hwsim_send_nullfunc_ps, data);

include/net/cfg80211.h

@@ -1773,6 +1773,8 @@ enum cfg80211_signal_type {
  *	by %parent_bssid.
  * @parent_bssid: the BSS according to which %parent_tsf is set. This is set to
  *	the BSS that requested the scan in which the beacon/probe was received.
+ * @chains: bitmask for filled values in @chain_signal.
+ * @chain_signal: per-chain signal strength of last received BSS in dBm.
  */
 struct cfg80211_inform_bss {
 	struct ieee80211_channel *chan;
@@ -1781,6 +1783,8 @@ struct cfg80211_inform_bss {
 	u64 boottime_ns;
 	u64 parent_tsf;
 	u8 parent_bssid[ETH_ALEN] __aligned(2);
+	u8 chains;
+	s8 chain_signal[IEEE80211_MAX_CHAINS];
 };
 
 /**
@@ -1824,6 +1828,8 @@ struct cfg80211_bss_ies {
  *	that holds the beacon data. @beacon_ies is still valid, of course, and
  *	points to the same data as hidden_beacon_bss->beacon_ies in that case.
  * @signal: signal strength value (type depends on the wiphy's signal_type)
+ * @chains: bitmask for filled values in @chain_signal.
+ * @chain_signal: per-chain signal strength of last received BSS in dBm.
  * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes
  */
 struct cfg80211_bss {
@@ -1842,6 +1848,8 @@ struct cfg80211_bss {
 	u16 capability;
 
 	u8 bssid[ETH_ALEN];
+	u8 chains;
+	s8 chain_signal[IEEE80211_MAX_CHAINS];
 
 	u8 priv[0] __aligned(sizeof(void *));
 };
@@ -2021,6 +2029,9 @@ struct cfg80211_disassoc_request {
  * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
  *	will be used in ht_capa.  Un-supported values will be ignored.
  * @ht_capa_mask:  The bits of ht_capa which are to be used.
+ * @wep_keys: static WEP keys, if not NULL points to an array of
+ * 	CFG80211_MAX_WEP_KEYS WEP keys
+ * @wep_tx_key: key index (0..3) of the default TX static WEP key
  */
 struct cfg80211_ibss_params {
 	const u8 *ssid;
@@ -2037,6 +2048,8 @@ struct cfg80211_ibss_params {
 	int mcast_rate[NUM_NL80211_BANDS];
 	struct ieee80211_ht_cap ht_capa;
 	struct ieee80211_ht_cap ht_capa_mask;
+	struct key_params *wep_keys;
+	int wep_tx_key;
 };
 
 /**
@@ -5575,7 +5588,7 @@ void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
  * cfg80211_rx_mgmt - notification of received, unprocessed management frame
  * @wdev: wireless device receiving the frame
  * @freq: Frequency on which the frame was received in MHz
- * @sig_dbm: signal strength in mBm, or 0 if unknown
+ * @sig_dbm: signal strength in dBm, or 0 if unknown
  * @buf: Management frame (header + body)
  * @len: length of the frame data
  * @flags: flags, as defined in enum nl80211_rxmgmt_flags
@@ -5754,7 +5767,7 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
  * @frame: the frame
  * @len: length of the frame
  * @freq: frequency the frame was received on
- * @sig_dbm: signal strength in mBm, or 0 if unknown
+ * @sig_dbm: signal strength in dBm, or 0 if unknown
  *
  * Use this function to report to userspace when a beacon was
  * received. It is not useful to call this when there is no

include/net/mac80211.h

@@ -1552,6 +1552,9 @@ struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif);
  * @IEEE80211_KEY_FLAG_RESERVE_TAILROOM: This flag should be set by the
  *	driver for a key to indicate that sufficient tailroom must always
  *	be reserved for ICV or MIC, even when HW encryption is enabled.
+ * @IEEE80211_KEY_FLAG_PUT_MIC_SPACE: This flag should be set by the driver for
+ *	a TKIP key if it only requires MIC space. Do not set together with
+ *	@IEEE80211_KEY_FLAG_GENERATE_MMIC on the same key.
  */
 enum ieee80211_key_flags {
 	IEEE80211_KEY_FLAG_GENERATE_IV_MGMT	= BIT(0),
@@ -1562,6 +1565,7 @@ enum ieee80211_key_flags {
 	IEEE80211_KEY_FLAG_PUT_IV_SPACE		= BIT(5),
 	IEEE80211_KEY_FLAG_RX_MGMT		= BIT(6),
 	IEEE80211_KEY_FLAG_RESERVE_TAILROOM	= BIT(7),
+	IEEE80211_KEY_FLAG_PUT_MIC_SPACE	= BIT(8),
 };
 
 /**
@@ -1593,8 +1597,8 @@ struct ieee80211_key_conf {
 	u8 icv_len;
 	u8 iv_len;
 	u8 hw_key_idx;
-	u8 flags;
 	s8 keyidx;
+	u16 flags;
 	u8 keylen;
 	u8 key[0];
 };
@@ -2056,6 +2060,9 @@ struct ieee80211_txq {
  *	The stack will not do fragmentation.
  *	The callback for @set_frag_threshold should be set as well.
  *
+ * @IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA: Hardware supports buffer STA on
+ *	TDLS links.
+ *
  * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
  */
 enum ieee80211_hw_flags {
@@ -2098,6 +2105,7 @@ enum ieee80211_hw_flags {
 	IEEE80211_HW_TX_FRAG_LIST,
 	IEEE80211_HW_REPORTS_LOW_ACK,
 	IEEE80211_HW_SUPPORTS_TX_FRAG,
+	IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA,
 
 	/* keep last, obviously */
 	NUM_IEEE80211_HW_FLAGS

include/uapi/linux/nl80211.h

@@ -3862,6 +3862,9 @@ enum nl80211_bss_scan_width {
  *	@NL80211_BSS_PARENT_BSSID. (u64).
  * @NL80211_BSS_PARENT_BSSID: the BSS according to which @NL80211_BSS_PARENT_TSF
  *	is set.
+ * @NL80211_BSS_CHAIN_SIGNAL: per-chain signal strength of last BSS update.
+ *	Contains a nested array of signal strength attributes (u8, dBm),
+ *	using the nesting index as the antenna number.
  * @__NL80211_BSS_AFTER_LAST: internal
  * @NL80211_BSS_MAX: highest BSS attribute
  */
@@ -3885,6 +3888,7 @@ enum nl80211_bss {
 	NL80211_BSS_PAD,
 	NL80211_BSS_PARENT_TSF,
 	NL80211_BSS_PARENT_BSSID,
+	NL80211_BSS_CHAIN_SIGNAL,
 
 	/* keep last */
 	__NL80211_BSS_AFTER_LAST,

net/mac80211/agg-rx.c

@@ -153,27 +153,16 @@ EXPORT_SYMBOL(ieee80211_stop_rx_ba_session);
  */
 static void sta_rx_agg_session_timer_expired(struct timer_list *t)
 {
-	struct tid_ampdu_rx *tid_rx_timer =
-		from_timer(tid_rx_timer, t, session_timer);
-	struct sta_info *sta = tid_rx_timer->sta;
-	u8 tid = tid_rx_timer->tid;
-	struct tid_ampdu_rx *tid_rx;
+	struct tid_ampdu_rx *tid_rx = from_timer(tid_rx, t, session_timer);
+	struct sta_info *sta = tid_rx->sta;
+	u8 tid = tid_rx->tid;
 	unsigned long timeout;
 
-	rcu_read_lock();
-	tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]);
-	if (!tid_rx) {
-		rcu_read_unlock();
-		return;
-	}
-
 	timeout = tid_rx->last_rx + TU_TO_JIFFIES(tid_rx->timeout);
 	if (time_is_after_jiffies(timeout)) {
 		mod_timer(&tid_rx->session_timer, timeout);
-		rcu_read_unlock();
 		return;
 	}
-	rcu_read_unlock();
 
 	ht_dbg(sta->sdata, "RX session timer expired on %pM tid %d\n",
 	       sta->sta.addr, tid);
@@ -415,10 +404,11 @@ void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
 					  timeout);
 }
 
-void __ieee80211_start_rx_ba_session(struct sta_info *sta,
-				     u8 dialog_token, u16 timeout,
-				     u16 start_seq_num, u16 ba_policy, u16 tid,
-				     u16 buf_size, bool tx, bool auto_seq)
+static void __ieee80211_start_rx_ba_session(struct sta_info *sta,
+					    u8 dialog_token, u16 timeout,
+					    u16 start_seq_num, u16 ba_policy,
+					    u16 tid, u16 buf_size, bool tx,
+					    bool auto_seq)
 {
 	mutex_lock(&sta->ampdu_mlme.mtx);
 	___ieee80211_start_rx_ba_session(sta, dialog_token, timeout,

net/mac80211/agg-tx.c

@@ -392,7 +392,8 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
 	 * telling the driver. New packets will not go through since
 	 * the aggregation session is no longer OPERATIONAL.
 	 */
-	synchronize_net();
+	if (!local->in_reconfig)
+		synchronize_net();
 
 	tid_tx->stop_initiator = reason == AGG_STOP_PEER_REQUEST ?
 					WLAN_BACK_RECIPIENT :
@@ -429,18 +430,12 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
  */
 static void sta_addba_resp_timer_expired(struct timer_list *t)
 {
-	struct tid_ampdu_tx *tid_tx_timer =
-		from_timer(tid_tx_timer, t, addba_resp_timer);
-	struct sta_info *sta = tid_tx_timer->sta;
-	u8 tid = tid_tx_timer->tid;
-	struct tid_ampdu_tx *tid_tx;
+	struct tid_ampdu_tx *tid_tx = from_timer(tid_tx, t, addba_resp_timer);
+	struct sta_info *sta = tid_tx->sta;
+	u8 tid = tid_tx->tid;
 
 	/* check if the TID waits for addBA response */
-	rcu_read_lock();
-	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
-	if (!tid_tx ||
-	    test_bit(HT_AGG_STATE_RESPONSE_RECEIVED, &tid_tx->state)) {
-		rcu_read_unlock();
+	if (test_bit(HT_AGG_STATE_RESPONSE_RECEIVED, &tid_tx->state)) {
 		ht_dbg(sta->sdata,
 		       "timer expired on %pM tid %d not expecting addBA response\n",
 		       sta->sta.addr, tid);
@@ -451,7 +446,6 @@ static void sta_addba_resp_timer_expired(struct timer_list *t)
 	       sta->sta.addr, tid);
 
 	ieee80211_stop_tx_ba_session(&sta->sta, tid);
-	rcu_read_unlock();
 }
 
 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid)
@@ -529,29 +523,21 @@ void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid)
  */
 static void sta_tx_agg_session_timer_expired(struct timer_list *t)
 {
-	struct tid_ampdu_tx *tid_tx_timer =
-		from_timer(tid_tx_timer, t, session_timer);
-	struct sta_info *sta = tid_tx_timer->sta;
-	u8 tid = tid_tx_timer->tid;
-	struct tid_ampdu_tx *tid_tx;
+	struct tid_ampdu_tx *tid_tx = from_timer(tid_tx, t, session_timer);
+	struct sta_info *sta = tid_tx->sta;
+	u8 tid = tid_tx->tid;
 	unsigned long timeout;
 
-	rcu_read_lock();
-	tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
-	if (!tid_tx || test_bit(HT_AGG_STATE_STOPPING, &tid_tx->state)) {
-		rcu_read_unlock();
+	if (test_bit(HT_AGG_STATE_STOPPING, &tid_tx->state)) {
 		return;
 	}
 
 	timeout = tid_tx->last_tx + TU_TO_JIFFIES(tid_tx->timeout);
 	if (time_is_after_jiffies(timeout)) {
 		mod_timer(&tid_tx->session_timer, timeout);
-		rcu_read_unlock();
 		return;
 	}
 
-	rcu_read_unlock();
-
 	ht_dbg(sta->sdata, "tx session timer expired on %pM tid %d\n",
 	       sta->sta.addr, tid);
 

net/mac80211/cfg.c

@@ -573,10 +573,12 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 			     offsetof(typeof(kseq), aes_cmac));
+		/* fall through */
 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 			     offsetof(typeof(kseq), aes_gmac));
+		/* fall through */
 	case WLAN_CIPHER_SUITE_GCMP:
 	case WLAN_CIPHER_SUITE_GCMP_256:
 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
@@ -2205,6 +2207,7 @@ static int ieee80211_scan(struct wiphy *wiphy,
 		 * for now fall through to allow scanning only when
 		 * beaconing hasn't been configured yet
 		 */
+		/* fall through */
 	case NL80211_IFTYPE_AP:
 		/*
 		 * If the scan has been forced (and the driver supports
@@ -2373,10 +2376,17 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy,
 	struct ieee80211_sub_if_data *sdata;
 	enum nl80211_tx_power_setting txp_type = type;
 	bool update_txp_type = false;
+	bool has_monitor = false;
 
 	if (wdev) {
 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 
+		if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
+			sdata = rtnl_dereference(local->monitor_sdata);
+			if (!sdata)
+				return -EOPNOTSUPP;
+		}
+
 		switch (type) {
 		case NL80211_TX_POWER_AUTOMATIC:
 			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
@@ -2415,15 +2425,34 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy,
 
 	mutex_lock(&local->iflist_mtx);
 	list_for_each_entry(sdata, &local->interfaces, list) {
+		if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
+			has_monitor = true;
+			continue;
+		}
 		sdata->user_power_level = local->user_power_level;
 		if (txp_type != sdata->vif.bss_conf.txpower_type)
 			update_txp_type = true;
 		sdata->vif.bss_conf.txpower_type = txp_type;
 	}
-	list_for_each_entry(sdata, &local->interfaces, list)
+	list_for_each_entry(sdata, &local->interfaces, list) {
+		if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
+			continue;
 		ieee80211_recalc_txpower(sdata, update_txp_type);
+	}
 	mutex_unlock(&local->iflist_mtx);
 
+	if (has_monitor) {
+		sdata = rtnl_dereference(local->monitor_sdata);
+		if (sdata) {
+			sdata->user_power_level = local->user_power_level;
+			if (txp_type != sdata->vif.bss_conf.txpower_type)
+				update_txp_type = true;
+			sdata->vif.bss_conf.txpower_type = txp_type;
+
+			ieee80211_recalc_txpower(sdata, update_txp_type);
+		}
+	}
+
 	return 0;
 }
 

net/mac80211/debugfs.c

@@ -211,6 +211,7 @@ static const char *hw_flag_names[] = {
 	FLAG(TX_FRAG_LIST),
 	FLAG(REPORTS_LOW_ACK),
 	FLAG(SUPPORTS_TX_FRAG),
+	FLAG(SUPPORTS_TDLS_BUFFER_STA),
 #undef FLAG
 };
 

net/mac80211/driver-ops.h

@@ -165,7 +165,8 @@ static inline void drv_bss_info_changed(struct ieee80211_local *local,
 	if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE ||
 			 sdata->vif.type == NL80211_IFTYPE_NAN ||
 			 (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
-			  !sdata->vif.mu_mimo_owner)))
+			  !sdata->vif.mu_mimo_owner &&
+			  !(changed & BSS_CHANGED_TXPOWER))))
 		return;
 
 	if (!check_sdata_in_driver(sdata))

net/mac80211/ht.c

@@ -492,6 +492,7 @@ int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
 	case IEEE80211_SMPS_AUTOMATIC:
 	case IEEE80211_SMPS_NUM_MODES:
 		WARN_ON(1);
+		/* fall through */
 	case IEEE80211_SMPS_OFF:
 		action_frame->u.action.u.ht_smps.smps_control =
 				WLAN_HT_SMPS_CONTROL_DISABLED;

net/mac80211/ieee80211_i.h

@@ -1757,10 +1757,6 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
 				     u16 initiator, u16 reason, bool stop);
 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
 				    u16 initiator, u16 reason, bool stop);
-void __ieee80211_start_rx_ba_session(struct sta_info *sta,
-				     u8 dialog_token, u16 timeout,
-				     u16 start_seq_num, u16 ba_policy, u16 tid,
-				     u16 buf_size, bool tx, bool auto_seq);
 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
 				      u8 dialog_token, u16 timeout,
 				      u16 start_seq_num, u16 ba_policy, u16 tid,