add updated mac80211 - this no longer relies on patching includes in the kernel trees...
[openwrt/openwrt.git] / package / mac80211 / src / mac80211 / 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 <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 */