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 /* whether this is an AP that we are associated with as a client */ 30 #define WLAN_STA_ASSOC_AP BIT(8) 31 #define WLAN_STA_WME BIT(9) 32 #define WLAN_STA_WDS BIT(27) 33 34 35 struct sta_info { 36 struct kref kref; 37 struct list_head list; 38 struct sta_info *hnext; /* next entry in hash table list */ 39 40 struct ieee80211_local *local; 41 42 u8 addr[ETH_ALEN]; 43 u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */ 44 u32 flags; /* WLAN_STA_ */ 45 46 struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in 47 * power saving state */ 48 int pspoll; /* whether STA has send a PS Poll frame */ 49 struct sk_buff_head tx_filtered; /* buffer of TX frames that were 50 * already given to low-level driver, 51 * but were filtered */ 52 int clear_dst_mask; 53 54 unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */ 55 unsigned long rx_bytes, tx_bytes; 56 unsigned long tx_retry_failed, tx_retry_count; 57 unsigned long tx_filtered_count; 58 59 unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */ 60 61 unsigned long last_rx; 62 u32 supp_rates; /* bitmap of supported rates in local->curr_rates */ 63 int txrate; /* index in local->curr_rates */ 64 int last_txrate; /* last rate used to send a frame to this STA */ 65 int last_nonerp_idx; 66 67 struct net_device *dev; /* which net device is this station associated 68 * to */ 69 70 struct ieee80211_key *key; 71 72 u32 tx_num_consecutive_failures; 73 u32 tx_num_mpdu_ok; 74 u32 tx_num_mpdu_fail; 75 76 struct rate_control_ref *rate_ctrl; 77 void *rate_ctrl_priv; 78 79 /* last received seq/frag number from this STA (per RX queue) */ 80 __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; 81 unsigned long num_duplicates; /* number of duplicate frames received 82 * from this STA */ 83 unsigned long tx_fragments; /* number of transmitted MPDUs */ 84 unsigned long rx_fragments; /* number of received MPDUs */ 85 unsigned long rx_dropped; /* number of dropped MPDUs from this STA */ 86 87 int last_rssi; /* RSSI of last received frame from this STA */ 88 int last_signal; /* signal of last received frame from this STA */ 89 int last_noise; /* noise of last received frame from this STA */ 90 int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */ 91 unsigned long last_ack; 92 int channel_use; 93 int channel_use_raw; 94 95 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 96 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; 97 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; 98 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 99 100 u16 listen_interval; 101 102 #ifdef CONFIG_MAC80211_DEBUGFS 103 struct sta_info_debugfsdentries { 104 struct dentry *dir; 105 struct dentry *flags; 106 struct dentry *num_ps_buf_frames; 107 struct dentry *last_ack_rssi; 108 struct dentry *last_ack_ms; 109 struct dentry *inactive_ms; 110 struct dentry *last_seq_ctrl; 111 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 112 struct dentry *wme_rx_queue; 113 struct dentry *wme_tx_queue; 114 #endif 115 } debugfs; 116 #endif 117 }; 118 119 120 /* Maximum number of concurrently registered stations */ 121 #define MAX_STA_COUNT 2007 122 123 #define STA_HASH_SIZE 256 124 #define STA_HASH(sta) (sta[5]) 125 126 127 /* Maximum number of frames to buffer per power saving station */ 128 #define STA_MAX_TX_BUFFER 128 129 130 /* Minimum buffered frame expiry time. If STA uses listen interval that is 131 * smaller than this value, the minimum value here is used instead. */ 132 #define STA_TX_BUFFER_EXPIRE (10 * HZ) 133 134 /* How often station data is cleaned up (e.g., expiration of buffered frames) 135 */ 136 #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) 137 138 static inline void __sta_info_get(struct sta_info *sta) 139 { 140 kref_get(&sta->kref); 141 } 142 143 struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr); 144 int sta_info_min_txrate_get(struct ieee80211_local *local); 145 void sta_info_put(struct sta_info *sta); 146 struct sta_info * sta_info_add(struct ieee80211_local *local, 147 struct net_device *dev, u8 *addr, gfp_t gfp); 148 void sta_info_remove(struct sta_info *sta); 149 void sta_info_free(struct sta_info *sta); 150 void sta_info_init(struct ieee80211_local *local); 151 int sta_info_start(struct ieee80211_local *local); 152 void sta_info_stop(struct ieee80211_local *local); 153 void sta_info_remove_aid_ptr(struct sta_info *sta); 154 void sta_info_flush(struct ieee80211_local *local, struct net_device *dev); 155 156 #endif /* STA_INFO_H */ 157