net: amend the fix for SO_BSDCOMPAT gsopt infoleak
[pandora-kernel.git] / net / mac80211 / rate.h
1 /*
2  * Copyright 2002-2005, Instant802 Networks, Inc.
3  * Copyright 2005, Devicescape Software, Inc.
4  * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10
11 #ifndef IEEE80211_RATE_H
12 #define IEEE80211_RATE_H
13
14 #include <linux/netdevice.h>
15 #include <linux/skbuff.h>
16 #include <linux/types.h>
17 #include <linux/kref.h>
18 #include <net/mac80211.h>
19 #include "ieee80211_i.h"
20 #include "sta_info.h"
21
22 struct rate_control_ref {
23         struct ieee80211_local *local;
24         struct rate_control_ops *ops;
25         void *priv;
26         struct kref kref;
27 };
28
29 /* Get a reference to the rate control algorithm. If `name' is NULL, get the
30  * first available algorithm. */
31 struct rate_control_ref *rate_control_alloc(const char *name,
32                                             struct ieee80211_local *local);
33 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
34                            struct sta_info *sta,
35                            struct ieee80211_tx_rate_control *txrc);
36 struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
37 void rate_control_put(struct rate_control_ref *ref);
38
39 static inline void rate_control_tx_status(struct ieee80211_local *local,
40                                           struct ieee80211_supported_band *sband,
41                                           struct sta_info *sta,
42                                           struct sk_buff *skb)
43 {
44         struct rate_control_ref *ref = local->rate_ctrl;
45         struct ieee80211_sta *ista = &sta->sta;
46         void *priv_sta = sta->rate_ctrl_priv;
47
48         ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
49 }
50
51
52 static inline void rate_control_rate_init(struct sta_info *sta)
53 {
54         struct ieee80211_local *local = sta->sdata->local;
55         struct rate_control_ref *ref = sta->rate_ctrl;
56         struct ieee80211_sta *ista = &sta->sta;
57         void *priv_sta = sta->rate_ctrl_priv;
58         struct ieee80211_supported_band *sband;
59
60         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
61
62         ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
63 }
64
65
66 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
67                                            struct ieee80211_sta *sta,
68                                            gfp_t gfp)
69 {
70         return ref->ops->alloc_sta(ref->priv, sta, gfp);
71 }
72
73 static inline void rate_control_free_sta(struct sta_info *sta)
74 {
75         struct rate_control_ref *ref = sta->rate_ctrl;
76         struct ieee80211_sta *ista = &sta->sta;
77         void *priv_sta = sta->rate_ctrl_priv;
78
79         ref->ops->free_sta(ref->priv, ista, priv_sta);
80 }
81
82 static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
83 {
84 #ifdef CONFIG_MAC80211_DEBUGFS
85         struct rate_control_ref *ref = sta->rate_ctrl;
86         if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
87                 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
88                                           sta->debugfs.dir);
89 #endif
90 }
91
92 static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
93 {
94 #ifdef CONFIG_MAC80211_DEBUGFS
95         struct rate_control_ref *ref = sta->rate_ctrl;
96         if (ref->ops->remove_sta_debugfs)
97                 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
98 #endif
99 }
100
101 /* functions for rate control related to a device */
102 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
103                                  const char *name);
104 void rate_control_deinitialize(struct ieee80211_local *local);
105
106
107 /* Rate control algorithms */
108 #ifdef CONFIG_MAC80211_RC_PID
109 extern int rc80211_pid_init(void);
110 extern void rc80211_pid_exit(void);
111 #else
112 static inline int rc80211_pid_init(void)
113 {
114         return 0;
115 }
116 static inline void rc80211_pid_exit(void)
117 {
118 }
119 #endif
120
121 #ifdef CONFIG_MAC80211_RC_MINSTREL
122 extern int rc80211_minstrel_init(void);
123 extern void rc80211_minstrel_exit(void);
124 #else
125 static inline int rc80211_minstrel_init(void)
126 {
127         return 0;
128 }
129 static inline void rc80211_minstrel_exit(void)
130 {
131 }
132 #endif
133
134
135 #endif /* IEEE80211_RATE_H */