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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 | ||
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 | ||
f0706e82 JB |
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 | ||
f0706e82 | 100 | u16 listen_interval; |
e9f207f0 | 101 | |
10816d40 RR |
102 | struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities |
103 | of this STA */ | |
104 | ||
e9f207f0 JB |
105 | #ifdef CONFIG_MAC80211_DEBUGFS |
106 | struct sta_info_debugfsdentries { | |
107 | struct dentry *dir; | |
108 | struct dentry *flags; | |
109 | struct dentry *num_ps_buf_frames; | |
110 | struct dentry *last_ack_rssi; | |
111 | struct dentry *last_ack_ms; | |
112 | struct dentry *inactive_ms; | |
113 | struct dentry *last_seq_ctrl; | |
114 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
115 | struct dentry *wme_rx_queue; | |
116 | struct dentry *wme_tx_queue; | |
117 | #endif | |
118 | } debugfs; | |
119 | #endif | |
f0706e82 JB |
120 | }; |
121 | ||
122 | ||
123 | /* Maximum number of concurrently registered stations */ | |
124 | #define MAX_STA_COUNT 2007 | |
125 | ||
126 | #define STA_HASH_SIZE 256 | |
127 | #define STA_HASH(sta) (sta[5]) | |
128 | ||
129 | ||
130 | /* Maximum number of frames to buffer per power saving station */ | |
131 | #define STA_MAX_TX_BUFFER 128 | |
132 | ||
133 | /* Minimum buffered frame expiry time. If STA uses listen interval that is | |
134 | * smaller than this value, the minimum value here is used instead. */ | |
135 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) | |
136 | ||
137 | /* How often station data is cleaned up (e.g., expiration of buffered frames) | |
138 | */ | |
139 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) | |
140 | ||
be8755e1 MW |
141 | static inline void __sta_info_get(struct sta_info *sta) |
142 | { | |
143 | kref_get(&sta->kref); | |
144 | } | |
145 | ||
f0706e82 JB |
146 | struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr); |
147 | int sta_info_min_txrate_get(struct ieee80211_local *local); | |
148 | void sta_info_put(struct sta_info *sta); | |
149 | struct sta_info * sta_info_add(struct ieee80211_local *local, | |
150 | struct net_device *dev, u8 *addr, gfp_t gfp); | |
be8755e1 MW |
151 | void sta_info_remove(struct sta_info *sta); |
152 | void sta_info_free(struct sta_info *sta); | |
f0706e82 JB |
153 | void sta_info_init(struct ieee80211_local *local); |
154 | int sta_info_start(struct ieee80211_local *local); | |
155 | void sta_info_stop(struct ieee80211_local *local); | |
156 | void sta_info_remove_aid_ptr(struct sta_info *sta); | |
157 | void sta_info_flush(struct ieee80211_local *local, struct net_device *dev); | |
158 | ||
159 | #endif /* STA_INFO_H */ |