package/mac80211/src/mac80211/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 #include <linux/list.h>
  13 #include <linux/types.h>
  14 #include <linux/if_ether.h>
  15 #include <linux/kref.h>
  16 #include "ieee80211_key.h"
  17
  18 /* Stations flags (struct sta_info::flags) */
  19 #define WLAN_STA_AUTH BIT(0)
  20 #define WLAN_STA_ASSOC BIT(1)
  21 #define WLAN_STA_PS BIT(2)
  22 #define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
  23 #define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
  24 #define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
  25                                     * controlling whether STA is authorized to
  26                                     * send and receive non-IEEE 802.1X frames
  27                                     */
  28 #define WLAN_STA_SHORT_PREAMBLE BIT(7)
  29 #define WLAN_STA_WME BIT(9)
  30 #define WLAN_STA_HT  BIT(10)
  31 #define WLAN_STA_WDS BIT(27)
  32
  33
  34 struct sta_info {
  35         struct kref kref;
  36         struct list_head list;
  37         struct sta_info *hnext; /* next entry in hash table list */
  38
  39         struct ieee80211_local *local;
  40
  41         u8 addr[ETH_ALEN];
  42         u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */
  43         u32 flags; /* WLAN_STA_ */
  44
  45         struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in
  46                                         * power saving state */
  47         int pspoll; /* whether STA has send a PS Poll frame */
  48         struct sk_buff_head tx_filtered; /* buffer of TX frames that were
  49                                           * already given to low-level driver,
  50                                           * but were filtered */
  51         int clear_dst_mask;
  52
  53         unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */
  54         unsigned long rx_bytes, tx_bytes;
  55         unsigned long tx_retry_failed, tx_retry_count;
  56         unsigned long tx_filtered_count;
  57
  58         unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
  59
  60         unsigned long last_rx;
  61         u32 supp_rates; /* bitmap of supported rates in local->curr_rates */
  62         int txrate; /* index in local->curr_rates */
  63         int last_txrate; /* last rate used to send a frame to this STA */
  64         int last_nonerp_idx;
  65
  66         struct net_device *dev; /* which net device is this station associated
  67                                  * to */
  68
  69         struct ieee80211_key *key;
  70
  71         u32 tx_num_consecutive_failures;
  72         u32 tx_num_mpdu_ok;
  73         u32 tx_num_mpdu_fail;
  74
  75         struct rate_control_ref *rate_ctrl;
  76         void *rate_ctrl_priv;
  77
  78         /* last received seq/frag number from this STA (per RX queue) */
  79         __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
  80         unsigned long num_duplicates; /* number of duplicate frames received
  81                                        * from this STA */
  82         unsigned long tx_fragments; /* number of transmitted MPDUs */
  83         unsigned long rx_fragments; /* number of received MPDUs */
  84         unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
  85
  86         int last_rssi; /* RSSI of last received frame from this STA */
  87         int last_signal; /* signal of last received frame from this STA */
  88         int last_noise; /* noise of last received frame from this STA */
  89         int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */
  90         unsigned long last_ack;
  91         int channel_use;
  92         int channel_use_raw;
  93
  94         u8 antenna_sel_tx;
  95         u8 antenna_sel_rx;
  96
  97
  98         int key_idx_compression; /* key table index for compression and TX
  99                                   * filtering; used only if sta->key is not
 100                                   * set */
 101
 102 #ifdef CONFIG_MAC80211_DEBUGFS
 103         int debugfs_registered;
 104 #endif
 105         unsigned int assoc_ap:1; /* whether this is an AP that we are
 106                                   * associated with as a client */
 107         unsigned int dls_sta:1; /* whether this stations is a DLS peer of us */
 108
 109 #define DLS_STATUS_OK           0
 110 #define DLS_STATUS_NOLINK       1
 111         int dls_status;
 112         u32 dls_timeout;
 113
 114 #ifdef CONFIG_HOSTAPD_WPA_TESTING
 115         u32 wpa_trigger;
 116 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
 117
 118 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 119         unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
 120         unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
 121 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
 122
 123         int vlan_id;
 124
 125         u16 listen_interval;
 126
 127 #ifdef CONFIG_MAC80211_DEBUGFS
 128         struct sta_info_debugfsdentries {
 129                 struct dentry *dir;
 130                 struct dentry *flags;
 131                 struct dentry *num_ps_buf_frames;
 132                 struct dentry *last_ack_rssi;
 133                 struct dentry *last_ack_ms;
 134                 struct dentry *inactive_ms;
 135                 struct dentry *last_seq_ctrl;
 136 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 137                 struct dentry *wme_rx_queue;
 138                 struct dentry *wme_tx_queue;
 139 #endif
 140         } debugfs;
 141 #endif
 142 };
 143
 144
 145 /* Maximum number of concurrently registered stations */
 146 #define MAX_STA_COUNT 2007
 147
 148 #define STA_HASH_SIZE 256
 149 #define STA_HASH(sta) (sta[5])
 150
 151
 152 /* Maximum number of frames to buffer per power saving station */
 153 #define STA_MAX_TX_BUFFER 128
 154
 155 /* Minimum buffered frame expiry time. If STA uses listen interval that is
 156  * smaller than this value, the minimum value here is used instead. */
 157 #define STA_TX_BUFFER_EXPIRE (10 * HZ)
 158
 159 /* How often station data is cleaned up (e.g., expiration of buffered frames)
 160  */
 161 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
 162
 163 struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
 164 int sta_info_min_txrate_get(struct ieee80211_local *local);
 165 void sta_info_put(struct sta_info *sta);
 166 struct sta_info * sta_info_add(struct ieee80211_local *local,
 167                                struct net_device *dev, u8 *addr, gfp_t gfp);
 168 void sta_info_free(struct sta_info *sta, int locked);
 169 void sta_info_init(struct ieee80211_local *local);
 170 int sta_info_start(struct ieee80211_local *local);
 171 void sta_info_stop(struct ieee80211_local *local);
 172 void sta_info_remove_aid_ptr(struct sta_info *sta);
 173 void sta_info_flush(struct ieee80211_local *local, struct net_device *dev);
 174
 175 #endif /* STA_INFO_H */