blob: 624fe5b81615e6afa04138cfdb375c8894d133c0 [file] [log] [blame]
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;
Johannes Berg631ad702014-01-20 23:29:34 +010024 const struct rate_control_ops *ops;
Jiri Bencf0706e82007-05-05 11:45:53 -070025 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;
Felix Fietkauf6845652014-11-19 20:08:08 +010040 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Vasanthakumar3c384052010-02-01 18:49:07 +053041
Felix Fietkau2cfc6fc2012-02-08 19:17:11 +010042 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
Vasanthakumar3c384052010-02-01 18:49:07 +053043 return;
44
Johannes Berg35c347a2015-03-05 16:10:08 +010045 spin_lock_bh(&sta->rate_ctrl_lock);
Felix Fietkauf6845652014-11-19 20:08:08 +010046 if (ref->ops->tx_status)
47 ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
48 else
49 ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
Johannes Berg35c347a2015-03-05 16:10:08 +010050 spin_unlock_bh(&sta->rate_ctrl_lock);
Jiri Bencf0706e82007-05-05 11:45:53 -070051}
52
Felix Fietkauf027c2a2014-11-19 20:08:13 +010053static inline void
54rate_control_tx_status_noskb(struct ieee80211_local *local,
55 struct ieee80211_supported_band *sband,
56 struct sta_info *sta,
57 struct ieee80211_tx_info *info)
58{
59 struct rate_control_ref *ref = local->rate_ctrl;
60 struct ieee80211_sta *ista = &sta->sta;
61 void *priv_sta = sta->rate_ctrl_priv;
62
63 if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
64 return;
65
66 if (WARN_ON_ONCE(!ref->ops->tx_status_noskb))
67 return;
68
Johannes Berg35c347a2015-03-05 16:10:08 +010069 spin_lock_bh(&sta->rate_ctrl_lock);
Felix Fietkauf027c2a2014-11-19 20:08:13 +010070 ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
Johannes Berg35c347a2015-03-05 16:10:08 +010071 spin_unlock_bh(&sta->rate_ctrl_lock);
Felix Fietkauf027c2a2014-11-19 20:08:13 +010072}
Jiri Bencf0706e82007-05-05 11:45:53 -070073
Denys Vlasenkoeb6d9292015-07-15 14:56:06 +020074void rate_control_rate_init(struct sta_info *sta);
75void rate_control_rate_update(struct ieee80211_local *local,
Sujith81cb7622009-02-12 11:38:37 +053076 struct ieee80211_supported_band *sband,
Denys Vlasenkoeb6d9292015-07-15 14:56:06 +020077 struct sta_info *sta, u32 changed);
Jiri Bencf0706e82007-05-05 11:45:53 -070078
Jiri Bencf0706e82007-05-05 11:45:53 -070079static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
Johannes Berg35c347a2015-03-05 16:10:08 +010080 struct sta_info *sta, gfp_t gfp)
Jiri Bencf0706e82007-05-05 11:45:53 -070081{
Johannes Berg35c347a2015-03-05 16:10:08 +010082 spin_lock_init(&sta->rate_ctrl_lock);
83 return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp);
Jiri Bencf0706e82007-05-05 11:45:53 -070084}
85
Johannes Berg4b7679a2008-09-18 18:14:18 +020086static inline void rate_control_free_sta(struct sta_info *sta)
Jiri Bencf0706e82007-05-05 11:45:53 -070087{
Johannes Berg4b7679a2008-09-18 18:14:18 +020088 struct rate_control_ref *ref = sta->rate_ctrl;
89 struct ieee80211_sta *ista = &sta->sta;
90 void *priv_sta = sta->rate_ctrl_priv;
91
92 ref->ops->free_sta(ref->priv, ista, priv_sta);
Jiri Bencf0706e82007-05-05 11:45:53 -070093}
94
Jiri Bence9f207f2007-05-05 11:46:38 -070095static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
96{
97#ifdef CONFIG_MAC80211_DEBUGFS
98 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Bergaf65cd962009-11-17 18:18:36 +010099 if (ref && sta->debugfs.dir && ref->ops->add_sta_debugfs)
Jiri Bence9f207f2007-05-05 11:46:38 -0700100 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
101 sta->debugfs.dir);
102#endif
103}
104
105static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
106{
107#ifdef CONFIG_MAC80211_DEBUGFS
108 struct rate_control_ref *ref = sta->rate_ctrl;
Johannes Bergaf65cd962009-11-17 18:18:36 +0100109 if (ref && ref->ops->remove_sta_debugfs)
Jiri Bence9f207f2007-05-05 11:46:38 -0700110 ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
111#endif
112}
113
Andres Salomon209c6712010-02-07 21:47:50 -0500114/* Get a reference to the rate control algorithm. If `name' is NULL, get the
115 * first available algorithm. */
Johannes Bergff688082007-07-27 15:43:23 +0200116int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
117 const char *name);
118void rate_control_deinitialize(struct ieee80211_local *local);
119
Johannes Berg4b475892008-01-02 15:17:03 +0100120
121/* Rate control algorithms */
Felix Fietkaucccf1292008-10-05 18:07:45 +0200122#ifdef CONFIG_MAC80211_RC_MINSTREL
Joe Perchesc1b12032013-10-18 13:48:25 -0700123int rc80211_minstrel_init(void);
124void rc80211_minstrel_exit(void);
Felix Fietkaucccf1292008-10-05 18:07:45 +0200125#else
126static inline int rc80211_minstrel_init(void)
127{
128 return 0;
129}
130static inline void rc80211_minstrel_exit(void)
131{
132}
133#endif
134
Felix Fietkauec8aa662010-05-13 16:48:03 +0200135#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
Joe Perchesc1b12032013-10-18 13:48:25 -0700136int rc80211_minstrel_ht_init(void);
137void rc80211_minstrel_ht_exit(void);
Felix Fietkauec8aa662010-05-13 16:48:03 +0200138#else
139static inline int rc80211_minstrel_ht_init(void)
140{
141 return 0;
142}
143static inline void rc80211_minstrel_ht_exit(void)
144{
145}
146#endif
147
Felix Fietkaucccf1292008-10-05 18:07:45 +0200148
Jiri Bencf0706e82007-05-05 11:45:53 -0700149#endif /* IEEE80211_RATE_H */