diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
new file mode 100644
index 0000000..f26e1c2
--- /dev/null
+++ b/net/mac80211/sta_info.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2002-2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef STA_INFO_H
+#define STA_INFO_H
+
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/if_ether.h>
+#include <linux/kref.h>
+#include "ieee80211_key.h"
+
+/* Stations flags (struct sta_info::flags) */
+#define WLAN_STA_AUTH BIT(0)
+#define WLAN_STA_ASSOC BIT(1)
+#define WLAN_STA_PS BIT(2)
+#define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
+#define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
+#define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
+				    * controlling whether STA is authorized to
+				    * send and receive non-IEEE 802.1X frames
+				    */
+#define WLAN_STA_SHORT_PREAMBLE BIT(7)
+#define WLAN_STA_WME BIT(9)
+#define WLAN_STA_WDS BIT(27)
+
+
+struct sta_info {
+	struct kref kref;
+	struct list_head list;
+	struct sta_info *hnext; /* next entry in hash table list */
+
+	struct ieee80211_local *local;
+
+	u8 addr[ETH_ALEN];
+	u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */
+	u32 flags; /* WLAN_STA_ */
+
+	struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in
+					* power saving state */
+	int pspoll; /* whether STA has send a PS Poll frame */
+	struct sk_buff_head tx_filtered; /* buffer of TX frames that were
+					  * already given to low-level driver,
+					  * but were filtered */
+	int clear_dst_mask;
+
+	unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */
+	unsigned long rx_bytes, tx_bytes;
+	unsigned long tx_retry_failed, tx_retry_count;
+	unsigned long tx_filtered_count;
+
+	unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
+
+	unsigned long last_rx;
+	u32 supp_rates; /* bitmap of supported rates in local->curr_rates */
+	int txrate; /* index in local->curr_rates */
+	int last_txrate; /* last rate used to send a frame to this STA */
+	int last_nonerp_idx;
+
+	struct net_device *dev; /* which net device is this station associated
+				 * to */
+
+	struct ieee80211_key *key;
+
+	u32 tx_num_consecutive_failures;
+	u32 tx_num_mpdu_ok;
+	u32 tx_num_mpdu_fail;
+
+	struct rate_control_ref *rate_ctrl;
+	void *rate_ctrl_priv;
+
+	/* last received seq/frag number from this STA (per RX queue) */
+	__le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
+	unsigned long num_duplicates; /* number of duplicate frames received
+				       * from this STA */
+	unsigned long tx_fragments; /* number of transmitted MPDUs */
+	unsigned long rx_fragments; /* number of received MPDUs */
+	unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
+
+	int last_rssi; /* RSSI of last received frame from this STA */
+	int last_signal; /* signal of last received frame from this STA */
+	int last_noise; /* noise of last received frame from this STA */
+	int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */
+	unsigned long last_ack;
+	int channel_use;
+	int channel_use_raw;
+
+	u8 antenna_sel_tx;
+	u8 antenna_sel_rx;
+
+
+	int key_idx_compression; /* key table index for compression and TX
+				  * filtering; used only if sta->key is not
+				  * set */
+
+	int assoc_ap; /* whether this is an AP that we are
+		       * associated with as a client */
+
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+	unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
+	unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
+#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
+
+	int vlan_id;
+
+	u16 listen_interval;
+};
+
+
+/* Maximum number of concurrently registered stations */
+#define MAX_STA_COUNT 2007
+
+#define STA_HASH_SIZE 256
+#define STA_HASH(sta) (sta[5])
+
+
+/* Maximum number of frames to buffer per power saving station */
+#define STA_MAX_TX_BUFFER 128
+
+/* Minimum buffered frame expiry time. If STA uses listen interval that is
+ * smaller than this value, the minimum value here is used instead. */
+#define STA_TX_BUFFER_EXPIRE (10 * HZ)
+
+/* How often station data is cleaned up (e.g., expiration of buffered frames)
+ */
+#define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
+
+struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
+int sta_info_min_txrate_get(struct ieee80211_local *local);
+void sta_info_put(struct sta_info *sta);
+struct sta_info * sta_info_add(struct ieee80211_local *local,
+			       struct net_device *dev, u8 *addr, gfp_t gfp);
+void sta_info_free(struct sta_info *sta, int locked);
+void sta_info_init(struct ieee80211_local *local);
+int sta_info_start(struct ieee80211_local *local);
+void sta_info_stop(struct ieee80211_local *local);
+void sta_info_remove_aid_ptr(struct sta_info *sta);
+void sta_info_flush(struct ieee80211_local *local, struct net_device *dev);
+
+#endif /* STA_INFO_H */