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f0706e82 JB |
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) | |
c9ee23df JB |
29 | /* whether this is an AP that we are associated with as a client */ |
30 | #define WLAN_STA_ASSOC_AP BIT(8) | |
f0706e82 JB |
31 | #define WLAN_STA_WME BIT(9) |
32 | #define WLAN_STA_WDS BIT(27) | |
33 | ||
5aae2880 RR |
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 | }; | |
f0706e82 JB |
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 | ||
f0706e82 JB |
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 | ||
f0706e82 | 145 | u16 listen_interval; |
e9f207f0 | 146 | |
10816d40 RR |
147 | struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities |
148 | of this STA */ | |
5aae2880 RR |
149 | struct sta_ampdu_mlme ampdu_mlme; |
150 | u8 timer_to_tid[STA_TID_NUM]; /* convert timer id to tid */ | |
10816d40 | 151 | |
e9f207f0 JB |
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 | |
f0706e82 JB |
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 | ||
be8755e1 MW |
188 | static inline void __sta_info_get(struct sta_info *sta) |
189 | { | |
190 | kref_get(&sta->kref); | |
191 | } | |
192 | ||
f0706e82 JB |
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); | |
be8755e1 MW |
198 | void sta_info_remove(struct sta_info *sta); |
199 | void sta_info_free(struct sta_info *sta); | |
f0706e82 JB |
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 */ |