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 */ 111