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Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
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>
Johannes Bergd0709a62008-02-25 16:27:46 +010017#include <linux/kref.h>
Jiri Bencf0706e82007-05-05 11:45:53 -070018#include <net/mac80211.h>
19#include "ieee80211_i.h"
20#include "sta_info.h"
21
Jiri Bencf0706e82007-05-05 11:45:53 -070022struct rate_control_ref {
Johannes Berg4b7679a2008-09-18 18:14:18 +020023 struct ieee80211_local *local;
Jiri Bencf0706e82007-05-05 11:45:53 -070024 struct rate_control_ops *ops;
25 void *priv;
26 struct kref kref;
27};
28
Johannes Berg4b7679a2008-09-18 18:14:18 +020029void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
Johannes Berge6a98542008-10-21 12:40:02 +020030 struct sta_info *sta,
31 struct ieee80211_tx_rate_control *txrc);
Jiri Bencf0706e82007-05-05 11:45:53 -070032struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
33void rate_control_put(struct rate_control_ref *ref);
34
Johannes Berg4b7679a2008-09-18 18:14:18 +020035static inline void rate_control_tx_status(struct ieee80211_local *local,
36 struct ieee80211_supported_band *sband,
37 struct sta_info *sta,
Johannes Berge039fa42008-05-15 12:55:29 +020038 struct sk_buff *skb)
Jiri Bencf0706e82007-05-05 11:45:53 -070039{
40 struct rate_control_ref *ref = local->rate_ctrl;
Johannes Berg4b7679a2008-09-18 18:14:18 +020041 struct ieee80211_sta *ista = &sta->sta;
42 void *priv_sta = sta->rate_ctrl_priv;
Vasanthakumar3c384052010-02-01 18:49:07 +053043
44 if (!ref)
45 return;
46
Jouni Malinen37eb0b12010-01-06 13:09:08 +020047 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -070048}
49
50
Johannes Berg4b7679a2008-09-18 18:14:18 +020051static inline void rate_control_rate_init(struct sta_info *sta)
Jiri Bencf0706e82007-05-05 11:45:53 -070052{
Johannes Berg4b7679a2008-09-18 18:14:18 +020053 struct ieee80211_local *local = sta->sdata->local;
Jiri Bencf0706e82007-05-05 11:45:53 -070054 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Berg4b7679a2008-09-18 18:14:18 +020055 struct ieee80211_sta *ista = &sta->sta;
56 void *priv_sta = sta->rate_ctrl_priv;
57 struct ieee80211_supported_band *sband;
58
Johannes Bergaf65cd962009-11-17 18:18:36 +010059 if (!ref)
60 return;
61
Johannes Berg4b7679a2008-09-18 18:14:18 +020062 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
63
64 ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
Jiri Bencf0706e82007-05-05 11:45:53 -070065}
66
Sujith81cb7622009-02-12 11:38:37 +053067static inline void rate_control_rate_update(struct ieee80211_local *local,
68 struct ieee80211_supported_band *sband,
Sujith4fa00432010-03-01 14:42:57 +053069 struct sta_info *sta, u32 changed,
70 enum nl80211_channel_type oper_chan_type)
Sujith81cb7622009-02-12 11:38:37 +053071{
72 struct rate_control_ref *ref = local->rate_ctrl;
73 struct ieee80211_sta *ista = &sta->sta;
74 void *priv_sta = sta->rate_ctrl_priv;
75
Johannes Bergaf65cd962009-11-17 18:18:36 +010076 if (ref && ref->ops->rate_update)
Sujith81cb7622009-02-12 11:38:37 +053077 ref->ops->rate_update(ref->priv, sband, ista,
Sujith4fa00432010-03-01 14:42:57 +053078 priv_sta, changed, oper_chan_type);
Sujith81cb7622009-02-12 11:38:37 +053079}
Jiri Bencf0706e82007-05-05 11:45:53 -070080
Jiri Bencf0706e82007-05-05 11:45:53 -070081static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
Johannes Berg4b7679a2008-09-18 18:14:18 +020082 struct ieee80211_sta *sta,
Jiri Bencf0706e82007-05-05 11:45:53 -070083 gfp_t gfp)
84{
Johannes Berg4b7679a2008-09-18 18:14:18 +020085 return ref->ops->alloc_sta(ref->priv, sta, gfp);
Jiri Bencf0706e82007-05-05 11:45:53 -070086}
87
Johannes Berg4b7679a2008-09-18 18:14:18 +020088static inline void rate_control_free_sta(struct sta_info *sta)
Jiri Bencf0706e82007-05-05 11:45:53 -070089{
Johannes Berg4b7679a2008-09-18 18:14:18 +020090 struct rate_control_ref *ref = sta->rate_ctrl;
91 struct ieee80211_sta *ista = &sta->sta;
92 void *priv_sta = sta->rate_ctrl_priv;
93
94 ref->ops->free_sta(ref->priv, ista, priv_sta);
Jiri Bencf0706e82007-05-05 11:45:53 -070095}
96
Jiri Bence9f207f2007-05-05 11:46:38 -070097static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
98{
99#ifdef CONFIG_MAC80211_DEBUGFS
100 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Bergaf65cd962009-11-17 18:18:36 +0100101 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
Jiri Bence9f207f2007-05-05 11:46:38 -0700102 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
103 sta->debugfs.dir);
104#endif
105}
106
107static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
108{
109#ifdef CONFIG_MAC80211_DEBUGFS
110 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Bergaf65cd962009-11-17 18:18:36 +0100111 if (ref && ref->ops->remove_sta_debugfs)
Jiri Bence9f207f2007-05-05 11:46:38 -0700112 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
113#endif
114}
115
Andres Salomon209c6712010-02-07 21:47:50 -0500116/* Get a reference to the rate control algorithm. If `name' is NULL, get the
117 * first available algorithm. */
Johannes Bergff688082007-07-27 15:43:23 +0200118int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
119 const char *name);
120void rate_control_deinitialize(struct ieee80211_local *local);
121
Johannes Berg4b475892008-01-02 15:17:03 +0100122
123/* Rate control algorithms */
Adrian Bunke5f5e732008-06-26 13:38:13 +0300124#ifdef CONFIG_MAC80211_RC_PID
Johannes Berg4b475892008-01-02 15:17:03 +0100125extern int rc80211_pid_init(void);
126extern void rc80211_pid_exit(void);
127#else
128static inline int rc80211_pid_init(void)
129{
130 return 0;
131}
132static inline void rc80211_pid_exit(void)
133{
134}
135#endif
136
Felix Fietkaucccf1292008-10-05 18:07:45 +0200137#ifdef CONFIG_MAC80211_RC_MINSTREL
138extern int rc80211_minstrel_init(void);
139extern void rc80211_minstrel_exit(void);
140#else
141static inline int rc80211_minstrel_init(void)
142{
143 return 0;
144}
145static inline void rc80211_minstrel_exit(void)
146{
147}
148#endif
149
150
Jiri Bencf0706e82007-05-05 11:45:53 -0700151#endif /* IEEE80211_RATE_H */