1 files changed, 65 insertions, 62 deletions

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index aa58df80ede0..50c309094c37 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -67,12 +67,10 @@
 
 static const struct rhashtable_params sta_rht_params = {
 	.nelem_hint = 3, /* start small */
-	.insecure_elasticity = true, /* Disable chain-length checks. */
 	.automatic_shrinking = true,
 	.head_offset = offsetof(struct sta_info, hash_node),
 	.key_offset = offsetof(struct sta_info, addr),
 	.key_len = ETH_ALEN,
-	.hashfn = sta_addr_hash,
 	.max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE,
 };
 
@@ -80,8 +78,8 @@ static const struct rhashtable_params sta_rht_params = {
 static int sta_info_hash_del(struct ieee80211_local *local,
 			     struct sta_info *sta)
 {
-	return rhashtable_remove_fast(&local->sta_hash, &sta->hash_node,
-				      sta_rht_params);
+	return rhltable_remove(&local->sta_hash, &sta->hash_node,
+			       sta_rht_params);
 }
 
 static void __cleanup_single_sta(struct sta_info *sta)
@@ -157,19 +155,22 @@ static void cleanup_single_sta(struct sta_info *sta)
 	sta_info_free(local, sta);
 }
 
+struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local,
+					 const u8 *addr)
+{
+	return rhltable_lookup(&local->sta_hash, addr, sta_rht_params);
+}
+
 /* protected by RCU */
 struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
 			      const u8 *addr)
 {
 	struct ieee80211_local *local = sdata->local;
+	struct rhlist_head *tmp;
 	struct sta_info *sta;
-	struct rhash_head *tmp;
-	const struct bucket_table *tbl;
 
 	rcu_read_lock();
-	tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
-
-	for_each_sta_info(local, tbl, addr, sta, tmp) {
+	for_each_sta_info(local, addr, sta, tmp) {
 		if (sta->sdata == sdata) {
 			rcu_read_unlock();
 			/* this is safe as the caller must already hold
@@ -190,14 +191,11 @@ struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
 				  const u8 *addr)
 {
 	struct ieee80211_local *local = sdata->local;
+	struct rhlist_head *tmp;
 	struct sta_info *sta;
-	struct rhash_head *tmp;
-	const struct bucket_table *tbl;
 
 	rcu_read_lock();
-	tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
-
-	for_each_sta_info(local, tbl, addr, sta, tmp) {
+	for_each_sta_info(local, addr, sta, tmp) {
 		if (sta->sdata == sdata ||
 		    (sta->sdata->bss && sta->sdata->bss == sdata->bss)) {
 			rcu_read_unlock();
@@ -263,8 +261,8 @@ void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)
 static int sta_info_hash_add(struct ieee80211_local *local,
 			     struct sta_info *sta)
 {
-	return rhashtable_insert_fast(&local->sta_hash, &sta->hash_node,
-				      sta_rht_params);
+	return rhltable_insert(&local->sta_hash, &sta->hash_node,
+			       sta_rht_params);
 }
 
 static void sta_deliver_ps_frames(struct work_struct *wk)
@@ -340,6 +338,9 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
 
 	memcpy(sta->addr, addr, ETH_ALEN);
 	memcpy(sta->sta.addr, addr, ETH_ALEN);
+	sta->sta.max_rx_aggregation_subframes =
+		local->hw.max_rx_aggregation_subframes;
+
 	sta->local = local;
 	sta->sdata = sdata;
 	sta->rx_stats.last_rx = jiffies;
@@ -450,9 +451,9 @@ static int sta_info_insert_check(struct sta_info *sta)
 		    is_multicast_ether_addr(sta->sta.addr)))
 		return -EINVAL;
 
-	/* Strictly speaking this isn't necessary as we hold the mutex, but
-	 * the rhashtable code can't really deal with that distinction. We
-	 * do require the mutex for correctness though.
+	/* The RCU read lock is required by rhashtable due to
+	 * asynchronous resize/rehash.  We also require the mutex
+	 * for correctness.
 	 */
 	rcu_read_lock();
 	lockdep_assert_held(&sdata->local->sta_mtx);
@@ -708,7 +709,7 @@ static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending)
 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 		unsigned long tids;
 
-		if (ignore_for_tim & BIT(ac))
+		if (ignore_for_tim & ieee80211_ac_to_qos_mask[ac])
 			continue;
 
 		indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) ||
@@ -1040,16 +1041,11 @@ static void sta_info_cleanup(unsigned long data)
 		  round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL));
 }
 
-u32 sta_addr_hash(const void *key, u32 length, u32 seed)
-{
-	return jhash(key, ETH_ALEN, seed);
-}
-
 int sta_info_init(struct ieee80211_local *local)
 {
 	int err;
 
-	err = rhashtable_init(&local->sta_hash, &sta_rht_params);
+	err = rhltable_init(&local->sta_hash, &sta_rht_params);
 	if (err)
 		return err;
 
@@ -1065,7 +1061,7 @@ int sta_info_init(struct ieee80211_local *local)
 void sta_info_stop(struct ieee80211_local *local)
 {
 	del_timer_sync(&local->sta_cleanup);
-	rhashtable_destroy(&local->sta_hash);
+	rhltable_destroy(&local->sta_hash);
 }
 
 
@@ -1135,17 +1131,14 @@ struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw,
 						   const u8 *localaddr)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
+	struct rhlist_head *tmp;
 	struct sta_info *sta;
-	struct rhash_head *tmp;
-	const struct bucket_table *tbl;
-
-	tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
 
 	/*
 	 * Just return a random station if localaddr is NULL
 	 * ... first in list.
 	 */
-	for_each_sta_info(local, tbl, addr, sta, tmp) {
+	for_each_sta_info(local, addr, sta, tmp) {
 		if (localaddr &&
 		    !ether_addr_equal(sta->sdata->vif.addr, localaddr))
 			continue;
@@ -1209,12 +1202,10 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
 
 	if (sta->sta.txq[0]) {
 		for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
-			struct txq_info *txqi = to_txq_info(sta->sta.txq[i]);
-
-			if (!txqi->tin.backlog_packets)
+			if (!txq_has_queue(sta->sta.txq[i]))
 				continue;
 
-			drv_wake_tx_queue(local, txqi);
+			drv_wake_tx_queue(local, to_txq_info(sta->sta.txq[i]));
 		}
 	}
 
@@ -1398,7 +1389,7 @@ ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs,
 		return true;
 
 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
-		if (ignored_acs & BIT(ac))
+		if (ignored_acs & ieee80211_ac_to_qos_mask[ac])
 			continue;
 
 		if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
@@ -1423,7 +1414,7 @@ ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs,
 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 		unsigned long tids;
 
-		if (ignored_acs & BIT(ac))
+		if (ignored_acs & ieee80211_ac_to_qos_mask[ac])
 			continue;
 
 		tids = ieee80211_tids_for_ac(ac);
@@ -1491,7 +1482,7 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta,
 			BIT(find_highest_prio_tid(driver_release_tids));
 
 	if (skb_queue_empty(&frames) && !driver_release_tids) {
-		int tid;
+		int tid, ac;
 
 		/*
 		 * For PS-Poll, this can only happen due to a race condition
@@ -1509,7 +1500,10 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta,
 		 */
 
 		/* This will evaluate to 1, 3, 5 or 7. */
-		tid = 7 - ((ffs(~ignored_acs) - 1) << 1);
+		for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++)
+			if (!(ignored_acs & ieee80211_ac_to_qos_mask[ac]))
+				break;
+		tid = 7 - 2 * ac;
 
 		ieee80211_send_null_response(sta, tid, reason, true, false);
 	} else if (!driver_release_tids) {
@@ -1645,10 +1639,8 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta,
 			return;
 
 		for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) {
-			struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]);
-
 			if (!(driver_release_tids & BIT(tid)) ||
-			    txqi->tin.backlog_packets)
+			    txq_has_queue(sta->sta.txq[tid]))
 				continue;
 
 			sta_info_recalc_tim(sta);
@@ -1882,10 +1874,7 @@ int sta_info_move_state(struct sta_info *sta,
 			if (!sta->sta.support_p2p_ps)
 				ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
 		} else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) {
-			if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
-			    (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
-			     !sta->sdata->u.vlan.sta))
-				atomic_dec(&sta->sdata->bss->num_mcast_sta);
+			ieee80211_vif_dec_num_mcast(sta->sdata);
 			clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
 			ieee80211_clear_fast_xmit(sta);
 			ieee80211_clear_fast_rx(sta);
@@ -1893,10 +1882,7 @@ int sta_info_move_state(struct sta_info *sta,
 		break;
 	case IEEE80211_STA_AUTHORIZED:
 		if (sta->sta_state == IEEE80211_STA_ASSOC) {
-			if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
-			    (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
-			     !sta->sdata->u.vlan.sta))
-				atomic_inc(&sta->sdata->bss->num_mcast_sta);
+			ieee80211_vif_inc_num_mcast(sta->sdata);
 			set_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
 			ieee80211_check_fast_xmit(sta);
 			ieee80211_check_fast_rx(sta);
@@ -1986,6 +1972,7 @@ static void sta_stats_decode_rate(struct ieee80211_local *local, u16 rate,
 		u16 brate;
 		unsigned int shift;
 
+		rinfo->flags = 0;
 		sband = local->hw.wiphy->bands[(rate >> 4) & 0xf];
 		brate = sband->bitrates[rate & 0xf].bitrate;
 		if (rinfo->bw == RATE_INFO_BW_5)
@@ -2001,14 +1988,15 @@ static void sta_stats_decode_rate(struct ieee80211_local *local, u16 rate,
 		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 }
 
-static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
+static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 {
 	u16 rate = ACCESS_ONCE(sta_get_last_rx_stats(sta)->last_rate);
 
 	if (rate == STA_STATS_RATE_INVALID)
-		rinfo->flags = 0;
-	else
-		sta_stats_decode_rate(sta->local, rate, rinfo);
+		return -EINVAL;
+
+	sta_stats_decode_rate(sta->local, rate, rinfo);
+	return 0;
 }
 
 static void sta_set_tidstats(struct sta_info *sta,
@@ -2213,8 +2201,8 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 	}
 
 	if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) {
-		sta_set_rate_info_rx(sta, &sinfo->rxrate);
-		sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE);
+		if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0)
+			sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE);
 	}
 
 	sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS);
@@ -2279,11 +2267,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 
-	/* check if the driver has a SW RC implementation */
-	if (ref && ref->ops->get_expected_throughput)
-		thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv);
-	else
-		thr = drv_get_expected_throughput(local, &sta->sta);
+	thr = sta_get_expected_throughput(sta);
 
 	if (thr != 0) {
 		sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT);
@@ -2291,6 +2275,25 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 	}
 }
 
+u32 sta_get_expected_throughput(struct sta_info *sta)
+{
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	struct ieee80211_local *local = sdata->local;
+	struct rate_control_ref *ref = NULL;
+	u32 thr = 0;
+
+	if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
+		ref = local->rate_ctrl;
+
+	/* check if the driver has a SW RC implementation */
+	if (ref && ref->ops->get_expected_throughput)
+		thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv);
+	else
+		thr = drv_get_expected_throughput(local, sta);
+
+	return thr;
+}
+
 unsigned long ieee80211_sta_last_active(struct sta_info *sta)
 {
 	struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta);