summary refs log tree commit diff
path: root/net/mac80211
diff options
context:
space:
mode:
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/ieee80211_i.h2
-rw-r--r--net/mac80211/rx.c7
-rw-r--r--net/mac80211/sta_info.c52
-rw-r--r--net/mac80211/sta_info.h19
-rw-r--r--net/mac80211/status.c7
5 files changed, 33 insertions, 54 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c71c73594790..e496dee5af08 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1213,7 +1213,7 @@ struct ieee80211_local {
 	spinlock_t tim_lock;
 	unsigned long num_sta;
 	struct list_head sta_list;
-	struct rhashtable sta_hash;
+	struct rhltable sta_hash;
 	struct timer_list sta_cleanup;
 	int sta_generation;
 
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index e796060b7c5e..f7cf342bab52 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4003,7 +4003,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 	__le16 fc;
 	struct ieee80211_rx_data rx;
 	struct ieee80211_sub_if_data *prev;
-	struct rhash_head *tmp;
+	struct rhlist_head *tmp;
 	int err = 0;
 
 	fc = ((struct ieee80211_hdr *)skb->data)->frame_control;
@@ -4046,13 +4046,10 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 		goto out;
 	} else if (ieee80211_is_data(fc)) {
 		struct sta_info *sta, *prev_sta;
-		const struct bucket_table *tbl;
 
 		prev_sta = NULL;
 
-		tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
-
-		for_each_sta_info(local, tbl, hdr->addr2, sta, tmp) {
+		for_each_sta_info(local, hdr->addr2, sta, tmp) {
 			if (!prev_sta) {
 				prev_sta = sta;
 				continue;
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 1b1b28ff4fdb..c803e2cb58bc 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)
@@ -453,9 +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);
@@ -1043,16 +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;
 
@@ -1068,7 +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);
 }
 
 
@@ -1138,17 +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;
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 530231b73278..ed5fcb984a01 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -455,7 +455,7 @@ struct sta_info {
 	/* General information, mostly static */
 	struct list_head list, free_list;
 	struct rcu_head rcu_head;
-	struct rhash_head hash_node;
+	struct rhlist_head hash_node;
 	u8 addr[ETH_ALEN];
 	struct ieee80211_local *local;
 	struct ieee80211_sub_if_data *sdata;
@@ -638,6 +638,9 @@ rcu_dereference_protected_tid_tx(struct sta_info *sta, int tid)
  */
 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
 
+struct rhlist_head *sta_info_hash_lookup(struct ieee80211_local *local,
+					 const u8 *addr);
+
 /*
  * Get a STA info, must be under RCU read lock.
  */
@@ -647,17 +650,9 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
 struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
 				  const u8 *addr);
 
-u32 sta_addr_hash(const void *key, u32 length, u32 seed);
-
-#define _sta_bucket_idx(_tbl, _a)					\
-	rht_bucket_index(_tbl, sta_addr_hash(_a, ETH_ALEN, (_tbl)->hash_rnd))
-
-#define for_each_sta_info(local, tbl, _addr, _sta, _tmp)		\
-	rht_for_each_entry_rcu(_sta, _tmp, tbl, 			\
-			       _sta_bucket_idx(tbl, _addr),		\
-			       hash_node)				\
-	/* compare address and run code only if it matches */		\
-	if (ether_addr_equal(_sta->addr, (_addr)))
+#define for_each_sta_info(local, _addr, _sta, _tmp)			\
+	rhl_for_each_entry_rcu(_sta, _tmp,				\
+			       sta_info_hash_lookup(local, _addr), hash_node)
 
 /*
  * Get STA info by index, BROKEN!
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index ea39f8a7baf3..ddf71c648cab 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -746,8 +746,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	__le16 fc;
 	struct ieee80211_supported_band *sband;
+	struct rhlist_head *tmp;
 	struct sta_info *sta;
-	struct rhash_head *tmp;
 	int retry_count;
 	int rates_idx;
 	bool send_to_cooked;
@@ -755,7 +755,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 	struct ieee80211_bar *bar;
 	int shift = 0;
 	int tid = IEEE80211_NUM_TIDS;
-	const struct bucket_table *tbl;
 
 	rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count);
 
@@ -764,9 +763,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 	sband = local->hw.wiphy->bands[info->band];
 	fc = hdr->frame_control;
 
-	tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
-
-	for_each_sta_info(local, tbl, hdr->addr1, sta, tmp) {
+	for_each_sta_info(local, hdr->addr1, sta, tmp) {
 		/* skip wrong virtual interface */
 		if (!ether_addr_equal(hdr->addr2, sta->sdata->vif.addr))
 			continue;
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-15 03:33:10 +0000