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-rw-r--r--net/mac80211/sta_info.h68
1 files changed, 46 insertions, 22 deletions
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index b4810f6..822d845 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -42,6 +42,9 @@
* be in the queues
* @WLAN_STA_PSPOLL: Station sent PS-poll while driver was keeping
* station in power-save mode, reply when the driver unblocks.
+ * @WLAN_STA_DISASSOC: Disassociation in progress.
+ * This is used to reject TX BA session requests when disassociation
+ * is in progress.
*/
enum ieee80211_sta_info_flags {
WLAN_STA_AUTH = 1<<0,
@@ -57,6 +60,7 @@ enum ieee80211_sta_info_flags {
WLAN_STA_SUSPEND = 1<<11,
WLAN_STA_PS_DRIVER = 1<<12,
WLAN_STA_PSPOLL = 1<<13,
+ WLAN_STA_DISASSOC = 1<<14,
};
#define STA_TID_NUM 16
@@ -162,11 +166,6 @@ struct sta_ampdu_mlme {
};
-/* see __sta_info_unlink */
-#define STA_INFO_PIN_STAT_NORMAL 0
-#define STA_INFO_PIN_STAT_PINNED 1
-#define STA_INFO_PIN_STAT_DESTROY 2
-
/**
* struct sta_info - STA information
*
@@ -187,7 +186,6 @@ struct sta_ampdu_mlme {
* @flaglock: spinlock for flags accesses
* @drv_unblock_wk: used for driver PS unblocking
* @listen_interval: listen interval of this station, when we're acting as AP
- * @pin_status: used internally for pinning a STA struct into memory
* @flags: STA flags, see &enum ieee80211_sta_info_flags
* @ps_tx_buf: buffer of frames to transmit to this station
* when it leaves power saving state
@@ -226,6 +224,7 @@ struct sta_ampdu_mlme {
* @debugfs: debug filesystem info
* @sta: station information we share with the driver
* @dead: set to true when sta is unlinked
+ * @uploaded: set to true when sta is uploaded to the driver
*/
struct sta_info {
/* General information, mostly static */
@@ -245,11 +244,7 @@ struct sta_info {
bool dead;
- /*
- * for use by the internal lifetime management,
- * see __sta_info_unlink
- */
- u8 pin_status;
+ bool uploaded;
/*
* frequently updated, locked with own spinlock (flaglock),
@@ -403,9 +398,37 @@ static inline u32 get_sta_flags(struct sta_info *sta)
#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
/*
- * Get a STA info, must have be under RCU read lock.
+ * Get a STA info, must be under RCU read lock.
*/
-struct sta_info *sta_info_get(struct ieee80211_local *local, const u8 *addr);
+struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr);
+
+struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr);
+
+static inline
+void for_each_sta_info_type_check(struct ieee80211_local *local,
+ const u8 *addr,
+ struct sta_info *sta,
+ struct sta_info *nxt)
+{
+}
+
+#define for_each_sta_info(local, _addr, sta, nxt) \
+ for ( /* initialise loop */ \
+ sta = rcu_dereference(local->sta_hash[STA_HASH(_addr)]),\
+ nxt = sta ? rcu_dereference(sta->hnext) : NULL; \
+ /* typecheck */ \
+ for_each_sta_info_type_check(local, (_addr), sta, nxt), \
+ /* continue condition */ \
+ sta; \
+ /* advance loop */ \
+ sta = nxt, \
+ nxt = sta ? rcu_dereference(sta->hnext) : NULL \
+ ) \
+ /* compare address and run code only if it matches */ \
+ if (memcmp(sta->sta.addr, (_addr), ETH_ALEN) == 0)
+
/*
* Get STA info by index, BROKEN!
*/
@@ -421,18 +444,19 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
* Insert STA info into hash table/list, returns zero or a
* -EEXIST if (if the same MAC address is already present).
*
- * Calling this without RCU protection makes the caller
- * relinquish its reference to @sta.
+ * Calling the non-rcu version makes the caller relinquish,
+ * the _rcu version calls read_lock_rcu() and must be called
+ * without it held.
*/
int sta_info_insert(struct sta_info *sta);
-/*
- * Unlink a STA info from the hash table/list.
- * This can NULL the STA pointer if somebody else
- * has already unlinked it.
- */
-void sta_info_unlink(struct sta_info **sta);
+int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU);
+int sta_info_insert_atomic(struct sta_info *sta);
+
+int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr);
+int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr);
-void sta_info_destroy(struct sta_info *sta);
void sta_info_set_tim_bit(struct sta_info *sta);
void sta_info_clear_tim_bit(struct sta_info *sta);
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