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-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;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.