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Diffstat (limited to 'net/mac80211/sta_info.c')
-rw-r--r--net/mac80211/sta_info.c112
1 files changed, 28 insertions, 84 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index c5f14e6bbde..a360bceeba5 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -19,6 +19,7 @@
#include <net/mac80211.h>
#include "ieee80211_i.h"
+#include "driver-ops.h"
#include "rate.h"
#include "sta_info.h"
#include "debugfs_sta.h"
@@ -43,6 +44,15 @@
* When the insertion fails (sta_info_insert()) returns non-zero), the
* structure will have been freed by sta_info_insert()!
*
+ * sta entries are added by mac80211 when you establish a link with a
+ * peer. This means different things for the different type of interfaces
+ * we support. For a regular station this mean we add the AP sta when we
+ * receive an assocation response from the AP. For IBSS this occurs when
+ * we receive a probe response or a beacon from target IBSS network. For
+ * WDS we add the sta for the peer imediately upon device open. When using
+ * AP mode we add stations for each respective station upon request from
+ * userspace through nl80211.
+ *
* Because there are debugfs entries for each station, and adding those
* must be able to sleep, it is also possible to "pin" a station entry,
* that means it can be removed from the hash table but not be freed.
@@ -292,6 +302,9 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
skb_queue_head_init(&sta->ps_tx_buf);
skb_queue_head_init(&sta->tx_filtered);
+ for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+ sta->last_seq_ctrl[i] = cpu_to_le16(USHORT_MAX);
+
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Allocated STA %pM\n",
wiphy_name(local->hw.wiphy), sta->sta.addr);
@@ -346,8 +359,7 @@ int sta_info_insert(struct sta_info *sta)
struct ieee80211_sub_if_data,
u.ap);
- local->ops->sta_notify(local_to_hw(local), &sdata->vif,
- STA_NOTIFY_ADD, &sta->sta);
+ drv_sta_notify(local, &sdata->vif, STA_NOTIFY_ADD, &sta->sta);
}
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
@@ -405,8 +417,7 @@ static void __sta_info_set_tim_bit(struct ieee80211_if_ap *bss,
if (sta->local->ops->set_tim) {
sta->local->tim_in_locked_section = true;
- sta->local->ops->set_tim(local_to_hw(sta->local),
- &sta->sta, true);
+ drv_set_tim(sta->local, &sta->sta, true);
sta->local->tim_in_locked_section = false;
}
}
@@ -431,8 +442,7 @@ static void __sta_info_clear_tim_bit(struct ieee80211_if_ap *bss,
if (sta->local->ops->set_tim) {
sta->local->tim_in_locked_section = true;
- sta->local->ops->set_tim(local_to_hw(sta->local),
- &sta->sta, false);
+ drv_set_tim(sta->local, &sta->sta, false);
sta->local->tim_in_locked_section = false;
}
}
@@ -482,8 +492,8 @@ static void __sta_info_unlink(struct sta_info **sta)
struct ieee80211_sub_if_data,
u.ap);
- local->ops->sta_notify(local_to_hw(local), &sdata->vif,
- STA_NOTIFY_REMOVE, &(*sta)->sta);
+ drv_sta_notify(local, &sdata->vif, STA_NOTIFY_REMOVE,
+ &(*sta)->sta);
}
if (ieee80211_vif_is_mesh(&sdata->vif)) {
@@ -543,9 +553,8 @@ void sta_info_unlink(struct sta_info **sta)
spin_unlock_irqrestore(&local->sta_lock, flags);
}
-static inline int sta_info_buffer_expired(struct ieee80211_local *local,
- struct sta_info *sta,
- struct sk_buff *skb)
+static int sta_info_buffer_expired(struct sta_info *sta,
+ struct sk_buff *skb)
{
struct ieee80211_tx_info *info;
int timeout;
@@ -556,8 +565,9 @@ static inline int sta_info_buffer_expired(struct ieee80211_local *local,
info = IEEE80211_SKB_CB(skb);
/* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */
- timeout = (sta->listen_interval * local->hw.conf.beacon_int * 32 /
- 15625) * HZ;
+ timeout = (sta->listen_interval *
+ sta->sdata->vif.bss_conf.beacon_int *
+ 32 / 15625) * HZ;
if (timeout < STA_TX_BUFFER_EXPIRE)
timeout = STA_TX_BUFFER_EXPIRE;
return time_after(jiffies, info->control.jiffies + timeout);
@@ -577,7 +587,7 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
for (;;) {
spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
skb = skb_peek(&sta->ps_tx_buf);
- if (sta_info_buffer_expired(local, sta, skb))
+ if (sta_info_buffer_expired(sta, skb))
skb = __skb_dequeue(&sta->ps_tx_buf);
else
skb = NULL;
@@ -610,6 +620,9 @@ static void sta_info_cleanup(unsigned long data)
sta_info_cleanup_expire_buffered(local, sta);
rcu_read_unlock();
+ if (local->quiescing)
+ return;
+
local->sta_cleanup.expires =
round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
add_timer(&local->sta_cleanup);
@@ -686,41 +699,10 @@ static void sta_info_debugfs_add_work(struct work_struct *work)
}
#endif
-static void __ieee80211_run_pending_flush(struct ieee80211_local *local)
-{
- struct sta_info *sta;
- unsigned long flags;
-
- ASSERT_RTNL();
-
- spin_lock_irqsave(&local->sta_lock, flags);
- while (!list_empty(&local->sta_flush_list)) {
- sta = list_first_entry(&local->sta_flush_list,
- struct sta_info, list);
- list_del(&sta->list);
- spin_unlock_irqrestore(&local->sta_lock, flags);
- sta_info_destroy(sta);
- spin_lock_irqsave(&local->sta_lock, flags);
- }
- spin_unlock_irqrestore(&local->sta_lock, flags);
-}
-
-static void ieee80211_sta_flush_work(struct work_struct *work)
-{
- struct ieee80211_local *local =
- container_of(work, struct ieee80211_local, sta_flush_work);
-
- rtnl_lock();
- __ieee80211_run_pending_flush(local);
- rtnl_unlock();
-}
-
void sta_info_init(struct ieee80211_local *local)
{
spin_lock_init(&local->sta_lock);
INIT_LIST_HEAD(&local->sta_list);
- INIT_LIST_HEAD(&local->sta_flush_list);
- INIT_WORK(&local->sta_flush_work, ieee80211_sta_flush_work);
setup_timer(&local->sta_cleanup, sta_info_cleanup,
(unsigned long)local);
@@ -741,7 +723,6 @@ int sta_info_start(struct ieee80211_local *local)
void sta_info_stop(struct ieee80211_local *local)
{
del_timer(&local->sta_cleanup);
- cancel_work_sync(&local->sta_flush_work);
#ifdef CONFIG_MAC80211_DEBUGFS
/*
* Make sure the debugfs adding work isn't pending after this
@@ -752,10 +733,7 @@ void sta_info_stop(struct ieee80211_local *local)
cancel_work_sync(&local->sta_debugfs_add);
#endif
- rtnl_lock();
sta_info_flush(local, NULL);
- __ieee80211_run_pending_flush(local);
- rtnl_unlock();
}
/**
@@ -767,7 +745,7 @@ void sta_info_stop(struct ieee80211_local *local)
* @sdata: matching rule for the net device (sta->dev) or %NULL to match all STAs
*/
int sta_info_flush(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata)
+ struct ieee80211_sub_if_data *sdata)
{
struct sta_info *sta, *tmp;
LIST_HEAD(tmp_list);
@@ -775,7 +753,6 @@ int sta_info_flush(struct ieee80211_local *local,
unsigned long flags;
might_sleep();
- ASSERT_RTNL();
spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
@@ -795,39 +772,6 @@ int sta_info_flush(struct ieee80211_local *local,
return ret;
}
-/**
- * sta_info_flush_delayed - flush matching STA entries from the STA table
- *
- * This function unlinks all stations for a given interface and queues
- * them for freeing. Note that the workqueue function scheduled here has
- * to run before any new keys can be added to the system to avoid set_key()
- * callback ordering issues.
- *
- * @sdata: the interface
- */
-void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata)
-{
- struct ieee80211_local *local = sdata->local;
- struct sta_info *sta, *tmp;
- unsigned long flags;
- bool work = false;
-
- spin_lock_irqsave(&local->sta_lock, flags);
- list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
- if (sdata == sta->sdata) {
- __sta_info_unlink(&sta);
- if (sta) {
- list_add_tail(&sta->list,
- &local->sta_flush_list);
- work = true;
- }
- }
- }
- if (work)
- schedule_work(&local->sta_flush_work);
- spin_unlock_irqrestore(&local->sta_lock, flags);
-}
-
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
unsigned long exp_time)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-26 22:48:10 +0000