summaryrefslogtreecommitdiffstats
path: root/net/mac80211/sta_info.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/mac80211/sta_info.c')
-rw-r--r--net/mac80211/sta_info.c52
1 files changed, 21 insertions, 31 deletions
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;