Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 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) |
Johannes Berg | c9ee23d | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 29 | /* whether this is an AP that we are associated with as a client */ |
| 30 | #define WLAN_STA_ASSOC_AP BIT(8) |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 31 | #define WLAN_STA_WME BIT(9) |
| 32 | #define WLAN_STA_WDS BIT(27) |
| 33 | |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 34 | #define STA_TID_NUM 16 |
| 35 | #define ADDBA_RESP_INTERVAL HZ |
| 36 | |
| 37 | #define HT_AGG_STATE_INITIATOR_SHIFT (4) |
| 38 | |
| 39 | #define HT_AGG_STATE_REQ_STOP_BA_MSK BIT(3) |
| 40 | |
| 41 | #define HT_AGG_STATE_IDLE (0x0) |
| 42 | #define HT_AGG_STATE_OPERATIONAL (0x7) |
| 43 | |
| 44 | /** |
| 45 | * struct tid_ampdu_rx - TID aggregation information (Rx). |
| 46 | * |
| 47 | * @state: TID's state in session state machine. |
| 48 | * @dialog_token: dialog token for aggregation session |
| 49 | * @ssn: Starting Sequence Number expected to be aggregated. |
| 50 | * @buf_size: buffer size for incoming A-MPDUs |
| 51 | * @timeout: reset timer value. |
| 52 | * @head_seq_num: head sequence number in reordering buffer. |
| 53 | * @stored_mpdu_num: number of MPDUs in reordering buffer |
| 54 | * @reorder_buf: buffer to reorder incoming aggregated MPDUs |
| 55 | * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) |
| 56 | */ |
| 57 | struct tid_ampdu_rx { |
| 58 | u8 state; |
| 59 | u8 dialog_token; |
| 60 | u16 ssn; |
| 61 | u16 buf_size; |
| 62 | u16 timeout; |
| 63 | u16 head_seq_num; |
| 64 | u16 stored_mpdu_num; |
| 65 | struct sk_buff **reorder_buf; |
| 66 | struct timer_list session_timer; |
| 67 | }; |
| 68 | |
| 69 | /** |
| 70 | * struct sta_ampdu_mlme - STA aggregation information. |
| 71 | * |
| 72 | * @tid_agg_info_rx: aggregation info for Rx per TID |
| 73 | * @ampdu_rx: for locking sections in aggregation Rx flow |
| 74 | */ |
| 75 | struct sta_ampdu_mlme { |
| 76 | struct tid_ampdu_rx tid_rx[STA_TID_NUM]; |
| 77 | spinlock_t ampdu_rx; |
| 78 | }; |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 79 | |
| 80 | struct sta_info { |
| 81 | struct kref kref; |
| 82 | struct list_head list; |
| 83 | struct sta_info *hnext; /* next entry in hash table list */ |
| 84 | |
| 85 | struct ieee80211_local *local; |
| 86 | |
| 87 | u8 addr[ETH_ALEN]; |
| 88 | u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */ |
| 89 | u32 flags; /* WLAN_STA_ */ |
| 90 | |
| 91 | struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in |
| 92 | * power saving state */ |
| 93 | int pspoll; /* whether STA has send a PS Poll frame */ |
| 94 | struct sk_buff_head tx_filtered; /* buffer of TX frames that were |
| 95 | * already given to low-level driver, |
| 96 | * but were filtered */ |
| 97 | int clear_dst_mask; |
| 98 | |
| 99 | unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */ |
| 100 | unsigned long rx_bytes, tx_bytes; |
| 101 | unsigned long tx_retry_failed, tx_retry_count; |
| 102 | unsigned long tx_filtered_count; |
| 103 | |
| 104 | unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */ |
| 105 | |
| 106 | unsigned long last_rx; |
| 107 | u32 supp_rates; /* bitmap of supported rates in local->curr_rates */ |
| 108 | int txrate; /* index in local->curr_rates */ |
| 109 | int last_txrate; /* last rate used to send a frame to this STA */ |
| 110 | int last_nonerp_idx; |
| 111 | |
| 112 | struct net_device *dev; /* which net device is this station associated |
| 113 | * to */ |
| 114 | |
| 115 | struct ieee80211_key *key; |
| 116 | |
| 117 | u32 tx_num_consecutive_failures; |
| 118 | u32 tx_num_mpdu_ok; |
| 119 | u32 tx_num_mpdu_fail; |
| 120 | |
| 121 | struct rate_control_ref *rate_ctrl; |
| 122 | void *rate_ctrl_priv; |
| 123 | |
| 124 | /* last received seq/frag number from this STA (per RX queue) */ |
| 125 | __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; |
| 126 | unsigned long num_duplicates; /* number of duplicate frames received |
| 127 | * from this STA */ |
| 128 | unsigned long tx_fragments; /* number of transmitted MPDUs */ |
| 129 | unsigned long rx_fragments; /* number of received MPDUs */ |
| 130 | unsigned long rx_dropped; /* number of dropped MPDUs from this STA */ |
| 131 | |
| 132 | int last_rssi; /* RSSI of last received frame from this STA */ |
| 133 | int last_signal; /* signal of last received frame from this STA */ |
| 134 | int last_noise; /* noise of last received frame from this STA */ |
| 135 | int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */ |
| 136 | unsigned long last_ack; |
| 137 | int channel_use; |
| 138 | int channel_use_raw; |
| 139 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 140 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
| 141 | unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; |
| 142 | unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; |
| 143 | #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ |
| 144 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 145 | u16 listen_interval; |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 146 | |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 147 | struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities |
| 148 | of this STA */ |
Ron Rindjunsky | 5aae288 | 2007-12-25 17:00:32 +0200 | [diff] [blame] | 149 | struct sta_ampdu_mlme ampdu_mlme; |
| 150 | u8 timer_to_tid[STA_TID_NUM]; /* convert timer id to tid */ |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 151 | |
Jiri Benc | e9f207f | 2007-05-05 11:46:38 -0700 | [diff] [blame] | 152 | #ifdef CONFIG_MAC80211_DEBUGFS |
| 153 | struct sta_info_debugfsdentries { |
| 154 | struct dentry *dir; |
| 155 | struct dentry *flags; |
| 156 | struct dentry *num_ps_buf_frames; |
| 157 | struct dentry *last_ack_rssi; |
| 158 | struct dentry *last_ack_ms; |
| 159 | struct dentry *inactive_ms; |
| 160 | struct dentry *last_seq_ctrl; |
| 161 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
| 162 | struct dentry *wme_rx_queue; |
| 163 | struct dentry *wme_tx_queue; |
| 164 | #endif |
| 165 | } debugfs; |
| 166 | #endif |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 167 | }; |
| 168 | |
| 169 | |
| 170 | /* Maximum number of concurrently registered stations */ |
| 171 | #define MAX_STA_COUNT 2007 |
| 172 | |
| 173 | #define STA_HASH_SIZE 256 |
| 174 | #define STA_HASH(sta) (sta[5]) |
| 175 | |
| 176 | |
| 177 | /* Maximum number of frames to buffer per power saving station */ |
| 178 | #define STA_MAX_TX_BUFFER 128 |
| 179 | |
| 180 | /* Minimum buffered frame expiry time. If STA uses listen interval that is |
| 181 | * smaller than this value, the minimum value here is used instead. */ |
| 182 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) |
| 183 | |
| 184 | /* How often station data is cleaned up (e.g., expiration of buffered frames) |
| 185 | */ |
| 186 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) |
| 187 | |
Michael Wu | be8755e | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 188 | static inline void __sta_info_get(struct sta_info *sta) |
| 189 | { |
| 190 | kref_get(&sta->kref); |
| 191 | } |
| 192 | |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 193 | struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr); |
| 194 | int sta_info_min_txrate_get(struct ieee80211_local *local); |
| 195 | void sta_info_put(struct sta_info *sta); |
| 196 | struct sta_info * sta_info_add(struct ieee80211_local *local, |
| 197 | struct net_device *dev, u8 *addr, gfp_t gfp); |
Michael Wu | be8755e | 2007-07-27 15:43:23 +0200 | [diff] [blame] | 198 | void sta_info_remove(struct sta_info *sta); |
| 199 | void sta_info_free(struct sta_info *sta); |
Jiri Benc | f0706e82 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 200 | void sta_info_init(struct ieee80211_local *local); |
| 201 | int sta_info_start(struct ieee80211_local *local); |
| 202 | void sta_info_stop(struct ieee80211_local *local); |
| 203 | void sta_info_remove_aid_ptr(struct sta_info *sta); |
| 204 | void sta_info_flush(struct ieee80211_local *local, struct net_device *dev); |
| 205 | |
| 206 | #endif /* STA_INFO_H */ |