#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
+#include <linux/timer.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "ieee80211_rate.h"
#include "sta_info.h"
#include "debugfs_sta.h"
+#include "mesh.h"
/* Caller must hold local->sta_lock */
static void sta_info_hash_add(struct ieee80211_local *local,
return -ENOENT;
}
-struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr)
+/* must hold local->sta_lock */
+static struct sta_info *__sta_info_find(struct ieee80211_local *local,
+ u8 *addr)
{
struct sta_info *sta;
- read_lock_bh(&local->sta_lock);
sta = local->sta_hash[STA_HASH(addr)];
while (sta) {
- if (memcmp(sta->addr, addr, ETH_ALEN) == 0) {
- __sta_info_get(sta);
+ if (compare_ether_addr(sta->addr, addr) == 0)
break;
- }
sta = sta->hnext;
}
+ return sta;
+}
+
+struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr)
+{
+ struct sta_info *sta;
+
+ read_lock_bh(&local->sta_lock);
+ sta = __sta_info_find(local, addr);
+ if (sta)
+ __sta_info_get(sta);
read_unlock_bh(&local->sta_lock);
return sta;
}
EXPORT_SYMBOL(sta_info_get);
-int sta_info_min_txrate_get(struct ieee80211_local *local)
+struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
+ struct net_device *dev)
{
struct sta_info *sta;
- struct ieee80211_hw_mode *mode;
- int min_txrate = 9999999;
- int i;
+ int i = 0;
read_lock_bh(&local->sta_lock);
- mode = local->oper_hw_mode;
- for (i = 0; i < STA_HASH_SIZE; i++) {
- sta = local->sta_hash[i];
- while (sta) {
- if (sta->txrate < min_txrate)
- min_txrate = sta->txrate;
- sta = sta->hnext;
+ list_for_each_entry(sta, &local->sta_list, list) {
+ if (i < idx) {
+ ++i;
+ continue;
+ } else if (!dev || dev == sta->dev) {
+ __sta_info_get(sta);
+ read_unlock_bh(&local->sta_lock);
+ return sta;
}
}
read_unlock_bh(&local->sta_lock);
- if (min_txrate == 9999999)
- min_txrate = 0;
- return mode->rates[min_txrate].rate;
+ return NULL;
}
-
static void sta_info_release(struct kref *kref)
{
struct sta_info *sta = container_of(kref, struct sta_info, kref);
struct ieee80211_local *local = sta->local;
struct sk_buff *skb;
+ int i;
/* free sta structure; it has already been removed from
* hash table etc. external structures. Make sure that all
while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
dev_kfree_skb_any(skb);
}
+ for (i = 0; i < STA_TID_NUM; i++) {
+ del_timer_sync(&sta->ampdu_mlme.tid_rx[i].session_timer);
+ del_timer_sync(&sta->ampdu_mlme.tid_tx[i].addba_resp_timer);
+ }
rate_control_free_sta(sta->rate_ctrl, sta->rate_ctrl_priv);
rate_control_put(sta->rate_ctrl);
kfree(sta);
EXPORT_SYMBOL(sta_info_put);
-struct sta_info * sta_info_add(struct ieee80211_local *local,
- struct net_device *dev, u8 *addr, gfp_t gfp)
+struct sta_info *sta_info_add(struct ieee80211_local *local,
+ struct net_device *dev, u8 *addr, gfp_t gfp)
{
struct sta_info *sta;
+ int i;
DECLARE_MAC_BUF(mac);
sta = kzalloc(sizeof(*sta), gfp);
if (!sta)
- return NULL;
+ return ERR_PTR(-ENOMEM);
kref_init(&sta->kref);
if (!sta->rate_ctrl_priv) {
rate_control_put(sta->rate_ctrl);
kfree(sta);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
memcpy(sta->addr, addr, ETH_ALEN);
sta->local = local;
sta->dev = dev;
+ spin_lock_init(&sta->ampdu_mlme.ampdu_rx);
+ spin_lock_init(&sta->ampdu_mlme.ampdu_tx);
+ for (i = 0; i < STA_TID_NUM; i++) {
+ /* timer_to_tid must be initialized with identity mapping to
+ * enable session_timer's data differentiation. refer to
+ * sta_rx_agg_session_timer_expired for useage */
+ sta->timer_to_tid[i] = i;
+ /* tid to tx queue: initialize according to HW (0 is valid) */
+ sta->tid_to_tx_q[i] = local->hw.queues;
+ /* rx timers */
+ sta->ampdu_mlme.tid_rx[i].session_timer.function =
+ sta_rx_agg_session_timer_expired;
+ sta->ampdu_mlme.tid_rx[i].session_timer.data =
+ (unsigned long)&sta->timer_to_tid[i];
+ init_timer(&sta->ampdu_mlme.tid_rx[i].session_timer);
+ /* tx timers */
+ sta->ampdu_mlme.tid_tx[i].addba_resp_timer.function =
+ sta_addba_resp_timer_expired;
+ sta->ampdu_mlme.tid_tx[i].addba_resp_timer.data =
+ (unsigned long)&sta->timer_to_tid[i];
+ init_timer(&sta->ampdu_mlme.tid_tx[i].addba_resp_timer);
+ }
skb_queue_head_init(&sta->ps_tx_buf);
skb_queue_head_init(&sta->tx_filtered);
- __sta_info_get(sta); /* sta used by caller, decremented by
- * sta_info_put() */
write_lock_bh(&local->sta_lock);
+ /* mark sta as used (by caller) */
+ __sta_info_get(sta);
+ /* check if STA exists already */
+ if (__sta_info_find(local, addr)) {
+ write_unlock_bh(&local->sta_lock);
+ sta_info_put(sta);
+ return ERR_PTR(-EEXIST);
+ }
list_add(&sta->list, &local->sta_list);
local->num_sta++;
sta_info_hash_add(local, sta);
- if (local->ops->sta_notify)
- local->ops->sta_notify(local_to_hw(local), dev->ifindex,
- STA_NOTIFY_ADD, addr);
+ if (local->ops->sta_notify) {
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
+ sdata = sdata->u.vlan.ap;
+
+ local->ops->sta_notify(local_to_hw(local), &sdata->vif,
+ STA_NOTIFY_ADD, addr);
+ }
write_unlock_bh(&local->sta_lock);
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
return sta;
}
+static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid)
+{
+ /*
+ * This format has been mandated by the IEEE specifications,
+ * so this line may not be changed to use the __set_bit() format.
+ */
+ bss->tim[aid / 8] |= (1 << (aid % 8));
+}
+
+static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid)
+{
+ /*
+ * This format has been mandated by the IEEE specifications,
+ * so this line may not be changed to use the __clear_bit() format.
+ */
+ bss->tim[aid / 8] &= ~(1 << (aid % 8));
+}
+
+static void __sta_info_set_tim_bit(struct ieee80211_if_ap *bss,
+ struct sta_info *sta)
+{
+ if (bss)
+ __bss_tim_set(bss, sta->aid);
+ if (sta->local->ops->set_tim)
+ sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 1);
+}
+
+void sta_info_set_tim_bit(struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
+ read_lock_bh(&sta->local->sta_lock);
+ __sta_info_set_tim_bit(sdata->bss, sta);
+ read_unlock_bh(&sta->local->sta_lock);
+}
+
+static void __sta_info_clear_tim_bit(struct ieee80211_if_ap *bss,
+ struct sta_info *sta)
+{
+ if (bss)
+ __bss_tim_clear(bss, sta->aid);
+ if (sta->local->ops->set_tim)
+ sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 0);
+}
+
+void sta_info_clear_tim_bit(struct sta_info *sta)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
+ read_lock_bh(&sta->local->sta_lock);
+ __sta_info_clear_tim_bit(sdata->bss, sta);
+ read_unlock_bh(&sta->local->sta_lock);
+}
+
/* Caller must hold local->sta_lock */
void sta_info_remove(struct sta_info *sta)
{
sta->flags &= ~WLAN_STA_PS;
if (sdata->bss)
atomic_dec(&sdata->bss->num_sta_ps);
+ __sta_info_clear_tim_bit(sdata->bss, sta);
}
local->num_sta--;
- sta_info_remove_aid_ptr(sta);
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_accept_plinks_update(sdata->dev);
}
void sta_info_free(struct sta_info *sta)
{
struct sk_buff *skb;
struct ieee80211_local *local = sta->local;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
DECLARE_MAC_BUF(mac);
might_sleep();
sta_info_remove(sta);
write_unlock_bh(&local->sta_lock);
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_plink_deactivate(sta);
+
while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
local->total_ps_buffered--;
dev_kfree_skb(skb);
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
ieee80211_key_free(sta->key);
- sta->key = NULL;
+ WARN_ON(sta->key);
- if (local->ops->sta_notify)
- local->ops->sta_notify(local_to_hw(local), sta->dev->ifindex,
- STA_NOTIFY_REMOVE, sta->addr);
+ if (local->ops->sta_notify) {
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
+ sdata = sdata->u.vlan.ap;
+
+ local->ops->sta_notify(local_to_hw(local), &sdata->vif,
+ STA_NOTIFY_REMOVE, sta->addr);
+ }
rate_control_remove_sta_debugfs(sta);
ieee80211_sta_debugfs_remove(sta);
{
unsigned long flags;
struct sk_buff *skb;
+ struct ieee80211_sub_if_data *sdata;
DECLARE_MAC_BUF(mac);
if (skb_queue_empty(&sta->ps_tx_buf))
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(local, sta, skb))
skb = __skb_dequeue(&sta->ps_tx_buf);
- if (skb_queue_empty(&sta->ps_tx_buf))
- sta->flags &= ~WLAN_STA_TIM;
- } else
+ else
skb = NULL;
spin_unlock_irqrestore(&sta->ps_tx_buf.lock, flags);
- if (skb) {
- local->total_ps_buffered--;
- printk(KERN_DEBUG "Buffered frame expired (STA "
- "%s)\n", print_mac(mac, sta->addr));
- dev_kfree_skb(skb);
- } else
+ if (!skb)
break;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+ local->total_ps_buffered--;
+ printk(KERN_DEBUG "Buffered frame expired (STA "
+ "%s)\n", print_mac(mac, sta->addr));
+ dev_kfree_skb(skb);
+
+ if (skb_queue_empty(&sta->ps_tx_buf))
+ sta_info_clear_tim_bit(sta);
}
}
}
read_unlock_bh(&local->sta_lock);
- local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+ local->sta_cleanup.expires =
+ round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
add_timer(&local->sta_cleanup);
}
rwlock_init(&local->sta_lock);
INIT_LIST_HEAD(&local->sta_list);
- init_timer(&local->sta_cleanup);
- local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
- local->sta_cleanup.data = (unsigned long) local;
- local->sta_cleanup.function = sta_info_cleanup;
+ setup_timer(&local->sta_cleanup, sta_info_cleanup,
+ (unsigned long)local);
+ local->sta_cleanup.expires =
+ round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
#ifdef CONFIG_MAC80211_DEBUGFS
INIT_WORK(&local->sta_debugfs_add, sta_info_debugfs_add_task);
sta_info_flush(local, NULL);
}
-void sta_info_remove_aid_ptr(struct sta_info *sta)
-{
- struct ieee80211_sub_if_data *sdata;
-
- if (sta->aid <= 0)
- return;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
-
- if (sdata->local->ops->set_tim)
- sdata->local->ops->set_tim(local_to_hw(sdata->local),
- sta->aid, 0);
- if (sdata->bss)
- __bss_tim_clear(sdata->bss, sta->aid);
-}
-
-
/**
* sta_info_flush - flush matching STA entries from the STA table
* @local: local interface data
projects / deliverable / linux.git / blobdiff