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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>
17#include <net/mac80211.h>
18#include "ieee80211_i.h"
19#include "sta_info.h"
Johannes Berg8f727ef2012-03-30 08:43:32 +020020#include "driver-ops.h"
Jiri Bencf0706e82007-05-05 11:45:53 -070021
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;
Jiri Bencf0706e82007-05-05 11:45:53 -070026};
27
Johannes Berg4b7679a2008-09-18 18:14:18 +020028void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
Johannes Berge6a98542008-10-21 12:40:02 +020029 struct sta_info *sta,
30 struct ieee80211_tx_rate_control *txrc);
Jiri Bencf0706e82007-05-05 11:45:53 -070031
Johannes Berg4b7679a2008-09-18 18:14:18 +020032static inline void rate_control_tx_status(struct ieee80211_local *local,
33 struct ieee80211_supported_band *sband,
34 struct sta_info *sta,
Johannes Berge039fa42008-05-15 12:55:29 +020035 struct sk_buff *skb)
Jiri Bencf0706e82007-05-05 11:45:53 -070036{
37 struct rate_control_ref *ref = local->rate_ctrl;
Johannes Berg4b7679a2008-09-18 18:14:18 +020038 struct ieee80211_sta *ista = &sta->sta;
39 void *priv_sta = sta->rate_ctrl_priv;
Vasanthakumar3c384052010-02-01 18:49:07 +053040
Felix Fietkau2cfc6fc2012-02-08 19:17:11 +010041 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
Vasanthakumar3c384052010-02-01 18:49:07 +053042 return;
43
Jouni Malinen37eb0b12010-01-06 13:09:08 +020044 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
Jiri Bencf0706e82007-05-05 11:45:53 -070045}
46
47
Johannes Berg4b7679a2008-09-18 18:14:18 +020048static inline void rate_control_rate_init(struct sta_info *sta)
Jiri Bencf0706e82007-05-05 11:45:53 -070049{
Johannes Berg4b7679a2008-09-18 18:14:18 +020050 struct ieee80211_local *local = sta->sdata->local;
Jiri Bencf0706e82007-05-05 11:45:53 -070051 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Berg4b7679a2008-09-18 18:14:18 +020052 struct ieee80211_sta *ista = &sta->sta;
53 void *priv_sta = sta->rate_ctrl_priv;
54 struct ieee80211_supported_band *sband;
Johannes Berg55de9082012-07-26 17:24:39 +020055 struct ieee80211_chanctx_conf *chanctx_conf;
Johannes Berg4b7679a2008-09-18 18:14:18 +020056
Michal Kaziorddcc3472013-12-02 11:54:07 +010057 ieee80211_sta_set_rx_nss(sta);
58
Johannes Bergaf65cd962009-11-17 18:18:36 +010059 if (!ref)
60 return;
61
Johannes Berg55de9082012-07-26 17:24:39 +020062 rcu_read_lock();
63
64 chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
65 if (WARN_ON(!chanctx_conf)) {
66 rcu_read_unlock();
67 return;
68 }
69
Johannes Berg4bf88532012-11-09 11:39:59 +010070 sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band];
Johannes Berg4b7679a2008-09-18 18:14:18 +020071
Simon Wunderlich3de805c2013-07-08 16:55:50 +020072 ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista,
73 priv_sta);
74 rcu_read_unlock();
Johannes Berge1936e92012-01-20 13:55:23 +010075 set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
Jiri Bencf0706e82007-05-05 11:45:53 -070076}
77
Sujith81cb7622009-02-12 11:38:37 +053078static inline void rate_control_rate_update(struct ieee80211_local *local,
79 struct ieee80211_supported_band *sband,
Johannes Berg64f68e52012-03-28 10:58:37 +020080 struct sta_info *sta, u32 changed)
Sujith81cb7622009-02-12 11:38:37 +053081{
82 struct rate_control_ref *ref = local->rate_ctrl;
83 struct ieee80211_sta *ista = &sta->sta;
84 void *priv_sta = sta->rate_ctrl_priv;
Simon Wunderlich3de805c2013-07-08 16:55:50 +020085 struct ieee80211_chanctx_conf *chanctx_conf;
Sujith81cb7622009-02-12 11:38:37 +053086
Simon Wunderlich3de805c2013-07-08 16:55:50 +020087 if (ref && ref->ops->rate_update) {
88 rcu_read_lock();
89
90 chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf);
91 if (WARN_ON(!chanctx_conf)) {
92 rcu_read_unlock();
93 return;
94 }
95
96 ref->ops->rate_update(ref->priv, sband, &chanctx_conf->def,
97 ista, priv_sta, changed);
98 rcu_read_unlock();
99 }
Johannes Berg8f727ef2012-03-30 08:43:32 +0200100 drv_sta_rc_update(local, sta->sdata, &sta->sta, changed);
Sujith81cb7622009-02-12 11:38:37 +0530101}
Jiri Bencf0706e82007-05-05 11:45:53 -0700102
Jiri Bencf0706e82007-05-05 11:45:53 -0700103static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
Johannes Berg4b7679a2008-09-18 18:14:18 +0200104 struct ieee80211_sta *sta,
Jiri Bencf0706e82007-05-05 11:45:53 -0700105 gfp_t gfp)
106{
Johannes Berg4b7679a2008-09-18 18:14:18 +0200107 return ref->ops->alloc_sta(ref->priv, sta, gfp);
Jiri Bencf0706e82007-05-05 11:45:53 -0700108}
109
Johannes Berg4b7679a2008-09-18 18:14:18 +0200110static inline void rate_control_free_sta(struct sta_info *sta)
Jiri Bencf0706e82007-05-05 11:45:53 -0700111{
Johannes Berg4b7679a2008-09-18 18:14:18 +0200112 struct rate_control_ref *ref = sta->rate_ctrl;
113 struct ieee80211_sta *ista = &sta->sta;
114 void *priv_sta = sta->rate_ctrl_priv;
115
116 ref->ops->free_sta(ref->priv, ista, priv_sta);
Jiri Bencf0706e82007-05-05 11:45:53 -0700117}
118
Jiri Bence9f207f2007-05-05 11:46:38 -0700119static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
120{
121#ifdef CONFIG_MAC80211_DEBUGFS
122 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Bergaf65cd962009-11-17 18:18:36 +0100123 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
Jiri Bence9f207f2007-05-05 11:46:38 -0700124 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
125 sta->debugfs.dir);
126#endif
127}
128
129static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
130{
131#ifdef CONFIG_MAC80211_DEBUGFS
132 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Bergaf65cd962009-11-17 18:18:36 +0100133 if (ref && ref->ops->remove_sta_debugfs)
Jiri Bence9f207f2007-05-05 11:46:38 -0700134 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
135#endif
136}
137
Andres Salomon209c6712010-02-07 21:47:50 -0500138/* Get a reference to the rate control algorithm. If `name' is NULL, get the
139 * first available algorithm. */
Johannes Bergff688082007-07-27 15:43:23 +0200140int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
141 const char *name);
142void rate_control_deinitialize(struct ieee80211_local *local);
143
Johannes Berg4b475892008-01-02 15:17:03 +0100144
145/* Rate control algorithms */
Adrian Bunke5f5e732008-06-26 13:38:13 +0300146#ifdef CONFIG_MAC80211_RC_PID
Joe Perchesc1b12032013-10-18 13:48:25 -0700147int rc80211_pid_init(void);
148void rc80211_pid_exit(void);
Johannes Berg4b475892008-01-02 15:17:03 +0100149#else
150static inline int rc80211_pid_init(void)
151{
152 return 0;
153}
154static inline void rc80211_pid_exit(void)
155{
156}
157#endif
158
Felix Fietkaucccf1292008-10-05 18:07:45 +0200159#ifdef CONFIG_MAC80211_RC_MINSTREL
Joe Perchesc1b12032013-10-18 13:48:25 -0700160int rc80211_minstrel_init(void);
161void rc80211_minstrel_exit(void);
Felix Fietkaucccf1292008-10-05 18:07:45 +0200162#else
163static inline int rc80211_minstrel_init(void)
164{
165 return 0;
166}
167static inline void rc80211_minstrel_exit(void)
168{
169}
170#endif
171
Felix Fietkauec8aa662010-05-13 16:48:03 +0200172#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
Joe Perchesc1b12032013-10-18 13:48:25 -0700173int rc80211_minstrel_ht_init(void);
174void rc80211_minstrel_ht_exit(void);
Felix Fietkauec8aa662010-05-13 16:48:03 +0200175#else
176static inline int rc80211_minstrel_ht_init(void)
177{
178 return 0;
179}
180static inline void rc80211_minstrel_ht_exit(void)
181{
182}
183#endif
184
Felix Fietkaucccf1292008-10-05 18:07:45 +0200185
Jiri Bencf0706e82007-05-05 11:45:53 -0700186#endif /* IEEE80211_RATE_H */