openwrt/target/linux/package/ieee80211-dscape/src/sta_info.h

   1 /*
   2  * Copyright 2002-2005, Devicescape Software, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef STA_INFO_H
  10 #define STA_INFO_H
  11
  12 /* Stations flags (struct sta_info::flags) */
  13 #define WLAN_STA_AUTH BIT(0)
  14 #define WLAN_STA_ASSOC BIT(1)
  15 #define WLAN_STA_PS BIT(2)
  16 #define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
  17 #define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
  18 #define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
  19                                     * controlling whether STA is authorized to
  20                                     * send and receive non-IEEE 802.1X frames
  21                                     */
  22 #define WLAN_STA_SHORT_PREAMBLE BIT(7)
  23 #define WLAN_STA_WME BIT(9)
  24 #define WLAN_STA_XR BIT(26)
  25 #define WLAN_STA_WDS BIT(27)
  26
  27
  28 struct sta_info {
  29         struct list_head list;
  30         struct sta_info *hnext; /* next entry in hash table list */
  31         atomic_t users; /* number of users (do not remove if > 0) */
  32
  33         u8 addr[ETH_ALEN];
  34         u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */
  35         u32 flags; /* WLAN_STA_ */
  36
  37         struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in
  38                                         * power saving state */
  39         int pspoll; /* whether STA has send a PS Poll frame */
  40         struct sk_buff_head tx_filtered; /* buffer of TX frames that were
  41                                           * already given to low-level driver,
  42                                           * but were filtered */
  43         int clear_dst_mask;
  44
  45         unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */
  46         unsigned long rx_bytes, tx_bytes;
  47         unsigned long tx_retry_failed, tx_retry_count;
  48         unsigned long tx_filtered_count;
  49
  50         unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
  51
  52         unsigned long last_rx;
  53         u32 supp_rates; /* bitmap of supported rates in local->curr_rates */
  54         int txrate; /* index in local->curr_rates */
  55         int last_txrate; /* last rate used to send a frame to this STA */
  56         int last_nonerp_idx;
  57
  58         struct net_device *dev; /* which net device is this station associated
  59                                  * to */
  60
  61         struct ieee80211_key *key;
  62
  63         u32 tx_num_consecutive_failures;
  64         u32 tx_num_mpdu_ok;
  65         u32 tx_num_mpdu_fail;
  66
  67         void *rate_ctrl_priv;
  68
  69         /* last received seq/frag number from this STA (per RX queue) */
  70         u16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
  71         unsigned long num_duplicates; /* number of duplicate frames received
  72                                        * from this STA */
  73         unsigned long tx_fragments; /* number of transmitted MPDUs */
  74         unsigned long rx_fragments; /* number of received MPDUs */
  75         unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
  76
  77         int last_rssi; /* RSSI of last received frame from this STA */
  78         int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */
  79         unsigned long last_ack;
  80         int channel_use;
  81         int channel_use_raw;
  82
  83         int antenna_sel;
  84
  85
  86         int key_idx_compression; /* key table index for compression and TX
  87                                   * filtering; used only if sta->key is not
  88                                   * set */
  89
  90         int proc_entry_added:1;
  91         int assoc_ap:1; /* whether this is an AP that we are associated with
  92                          * as a client */
  93
  94 #ifdef CONFIG_HOSTAPD_WPA_TESTING
  95         u32 wpa_trigger;
  96 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
  97
  98 #ifdef CONFIG_IEEE80211_DEBUG_COUNTERS
  99         unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
 100         unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
 101 #endif /* CONFIG_IEEE80211_DEBUG_COUNTERS */
 102
 103         int vlan_id;
 104 };
 105
 106
 107 /* Maximum number of concurrently registered stations */
 108 #define MAX_STA_COUNT 2007
 109
 110 /* Maximum number of AIDs to use for STAs; must be 2007 or lower
 111  * (IEEE 802.11 beacon format limitation) */
 112 #define MAX_AID_TABLE_SIZE 2007
 113
 114 #define STA_HASH_SIZE 256
 115 #define STA_HASH(sta) (sta[5])
 116
 117
 118 /* Maximum number of frames to buffer per power saving station */
 119 #define STA_MAX_TX_BUFFER 128
 120
 121 /* Buffered frame expiry time */
 122 #define STA_TX_BUFFER_EXPIRE (10 * HZ)
 123
 124 /* How often station data is cleaned up (e.g., expiration of buffered frames)
 125  */
 126 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
 127
 128
 129 struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
 130 int sta_info_min_txrate_get(struct ieee80211_local *local);
 131 void sta_info_release(struct ieee80211_local *local, struct sta_info *sta);
 132 struct sta_info * sta_info_add(struct ieee80211_local *local,
 133                                struct net_device *dev, u8 *addr);
 134 void sta_info_free(struct ieee80211_local *local, struct sta_info *sta,
 135                    int locked);
 136 void sta_info_init(struct ieee80211_local *local);
 137 void sta_info_start(struct ieee80211_local *local);
 138 void sta_info_stop(struct ieee80211_local *local);
 139 void sta_info_remove_aid_ptr(struct sta_info *sta);
 140 void sta_info_flush(struct ieee80211_local *local, struct net_device *dev);
 141
 142 #endif /* STA_INFO_H */