package/d80211/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 #include <linux/list.h>
  13 #include <linux/types.h>
  14 #include <linux/if_ether.h>
  15 #include "ieee80211_key.h"
  16
  17 /* Stations flags (struct sta_info::flags) */
  18 #define WLAN_STA_AUTH BIT(0)
  19 #define WLAN_STA_ASSOC BIT(1)
  20 #define WLAN_STA_PS BIT(2)
  21 #define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
  22 #define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
  23 #define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
  24                                     * controlling whether STA is authorized to
  25                                     * send and receive non-IEEE 802.1X frames
  26                                     */
  27 #define WLAN_STA_SHORT_PREAMBLE BIT(7)
  28 #define WLAN_STA_WME BIT(9)
  29 #define WLAN_STA_WDS BIT(27)
  30
  31
  32 struct sta_info {
  33         struct list_head list;
  34         struct kobject kobj;
  35         struct sta_info *hnext; /* next entry in hash table list */
  36
  37         struct ieee80211_local *local;
  38
  39         u8 addr[ETH_ALEN];
  40         u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */
  41         u32 flags; /* WLAN_STA_ */
  42
  43         struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in
  44                                         * power saving state */
  45         int pspoll; /* whether STA has send a PS Poll frame */
  46         struct sk_buff_head tx_filtered; /* buffer of TX frames that were
  47                                           * already given to low-level driver,
  48                                           * but were filtered */
  49         int clear_dst_mask;
  50
  51         unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */
  52         unsigned long rx_bytes, tx_bytes;
  53         unsigned long tx_retry_failed, tx_retry_count;
  54         unsigned long tx_filtered_count;
  55
  56         unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
  57
  58         unsigned long last_rx;
  59         u32 supp_rates; /* bitmap of supported rates in local->curr_rates */
  60         int txrate; /* index in local->curr_rates */
  61         int last_txrate; /* last rate used to send a frame to this STA */
  62         int last_nonerp_idx;
  63
  64         struct net_device *dev; /* which net device is this station associated
  65                                  * to */
  66
  67         struct ieee80211_key *key;
  68
  69         u32 tx_num_consecutive_failures;
  70         u32 tx_num_mpdu_ok;
  71         u32 tx_num_mpdu_fail;
  72
  73         struct rate_control_ref *rate_ctrl;
  74         void *rate_ctrl_priv;
  75
  76         /* last received seq/frag number from this STA (per RX queue) */
  77         __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
  78         unsigned long num_duplicates; /* number of duplicate frames received
  79                                        * from this STA */
  80         unsigned long tx_fragments; /* number of transmitted MPDUs */
  81         unsigned long rx_fragments; /* number of received MPDUs */
  82         unsigned long rx_dropped; /* number of dropped MPDUs from this STA */
  83
  84         int last_rssi; /* RSSI of last received frame from this STA */
  85         int last_signal; /* signal of last received frame from this STA */
  86         int last_noise; /* noise of last received frame from this STA */
  87         int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */
  88         unsigned long last_ack;
  89         int channel_use;
  90         int channel_use_raw;
  91
  92         int antenna_sel;
  93
  94
  95         int key_idx_compression; /* key table index for compression and TX
  96                                   * filtering; used only if sta->key is not
  97                                   * set */
  98
  99         unsigned int sysfs_registered:1;
 100         unsigned int assoc_ap:1; /* whether this is an AP that we are
 101                                   * associated with as a client */
 102
 103 #ifdef CONFIG_HOSTAPD_WPA_TESTING
 104         u32 wpa_trigger;
 105 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
 106
 107 #ifdef CONFIG_D80211_DEBUG_COUNTERS
 108         unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
 109         unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
 110 #endif /* CONFIG_D80211_DEBUG_COUNTERS */
 111
 112         int vlan_id;
 113
 114         u16 listen_interval;
 115 };
 116
 117
 118 /* Maximum number of concurrently registered stations */
 119 #define MAX_STA_COUNT 2007
 120
 121 #define STA_HASH_SIZE 256
 122 #define STA_HASH(sta) (sta[5])
 123
 124
 125 /* Maximum number of frames to buffer per power saving station */
 126 #define STA_MAX_TX_BUFFER 128
 127
 128 /* Minimum buffered frame expiry time. If STA uses listen interval that is
 129  * smaller than this value, the minimum value here is used instead. */
 130 #define STA_TX_BUFFER_EXPIRE (10 * HZ)
 131
 132 /* How often station data is cleaned up (e.g., expiration of buffered frames)
 133  */
 134 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ)
 135
 136 struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
 137 int sta_info_min_txrate_get(struct ieee80211_local *local);
 138 void sta_info_put(struct sta_info *sta);
 139 struct sta_info * sta_info_add(struct ieee80211_local *local,
 140                                struct net_device *dev, u8 *addr, gfp_t gfp);
 141 void sta_info_free(struct sta_info *sta, int locked);
 142 void sta_info_release(struct kobject *kobj);
 143 void sta_info_init(struct ieee80211_local *local);
 144 int sta_info_start(struct ieee80211_local *local);
 145 void sta_info_stop(struct ieee80211_local *local);
 146 void sta_info_remove_aid_ptr(struct sta_info *sta);
 147 void sta_info_flush(struct ieee80211_local *local, struct net_device *dev);
 148
 149 #endif /* STA_INFO_H */