net/mac80211/rate.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2002-2005, Instant802 Networks, Inc.
   4  * Copyright 2005, Devicescape Software, Inc.
   5  * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
   6  */
   7
   8 #ifndef IEEE80211_RATE_H
   9 #define IEEE80211_RATE_H
  10
  11 #include <linux/netdevice.h>
  12 #include <linux/skbuff.h>
  13 #include <linux/types.h>
  14 #include <net/mac80211.h>
  15 #include "ieee80211_i.h"
  16 #include "sta_info.h"
  17 #include "driver-ops.h"
  18
  19 struct rate_control_ref {
  20         const struct rate_control_ops *ops;
  21         void *priv;
  22 };
  23
  24 void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
  25                            struct sta_info *sta,
  26                            struct ieee80211_tx_rate_control *txrc);
  27
  28 void rate_control_tx_status(struct ieee80211_local *local,
  29                             struct ieee80211_supported_band *sband,
  30                             struct ieee80211_tx_status *st);
  31
  32 void rate_control_rate_init(struct sta_info *sta);
  33 void rate_control_rate_update(struct ieee80211_local *local,
  34                                     struct ieee80211_supported_band *sband,
  35                                     struct sta_info *sta, u32 changed);
  36
  37 static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
  38                                            struct sta_info *sta, gfp_t gfp)
  39 {
  40         spin_lock_init(&sta->rate_ctrl_lock);
  41         return ref->ops->alloc_sta(ref->priv, &sta->sta, gfp);
  42 }
  43
  44 static inline void rate_control_free_sta(struct sta_info *sta)
  45 {
  46         struct rate_control_ref *ref = sta->rate_ctrl;
  47         struct ieee80211_sta *ista = &sta->sta;
  48         void *priv_sta = sta->rate_ctrl_priv;
  49
  50         ref->ops->free_sta(ref->priv, ista, priv_sta);
  51 }
  52
  53 static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
  54 {
  55 #ifdef CONFIG_MAC80211_DEBUGFS
  56         struct rate_control_ref *ref = sta->rate_ctrl;
  57         if (ref && sta->debugfs_dir && ref->ops->add_sta_debugfs)
  58                 ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
  59                                           sta->debugfs_dir);
  60 #endif
  61 }
  62
  63 extern const struct file_operations rcname_ops;
  64
  65 static inline void rate_control_add_debugfs(struct ieee80211_local *local)
  66 {
  67 #ifdef CONFIG_MAC80211_DEBUGFS
  68         struct dentry *debugfsdir;
  69
  70         if (!local->rate_ctrl)
  71                 return;
  72
  73         if (!local->rate_ctrl->ops->add_debugfs)
  74                 return;
  75
  76         debugfsdir = debugfs_create_dir("rc", local->hw.wiphy->debugfsdir);
  77         local->debugfs.rcdir = debugfsdir;
  78         debugfs_create_file("name", 0400, debugfsdir,
  79                             local->rate_ctrl, &rcname_ops);
  80
  81         local->rate_ctrl->ops->add_debugfs(&local->hw, local->rate_ctrl->priv,
  82                                            debugfsdir);
  83 #endif
  84 }
  85
  86 void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata);
  87
  88 /* Get a reference to the rate control algorithm. If `name' is NULL, get the
  89  * first available algorithm. */
  90 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
  91                                  const char *name);
  92 void rate_control_deinitialize(struct ieee80211_local *local);
  93
  94
  95 /* Rate control algorithms */
  96 #ifdef CONFIG_MAC80211_RC_MINSTREL
  97 int rc80211_minstrel_init(void);
  98 void rc80211_minstrel_exit(void);
  99 #else
 100 static inline int rc80211_minstrel_init(void)
 101 {
 102         return 0;
 103 }
 104 static inline void rc80211_minstrel_exit(void)
 105 {
 106 }
 107 #endif
 108
 109
 110 #endif /* IEEE80211_RATE_H */