add d80211 from a recent wireless-dev checkout

[openwrt/openwrt.git] / package / d80211 / src / ieee80211_rate.h

diff --git a/package/d80211/src/ieee80211_rate.h b/package/d80211/src/ieee80211_rate.h
new file mode 100644 (file)
index 0000000..04c7465
--- /dev/null
+++ b/package/d80211/src/ieee80211_rate.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_RATE_H
+#define IEEE80211_RATE_H
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <net/d80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+
+#define RATE_CONTROL_NUM_DOWN 20
+#define RATE_CONTROL_NUM_UP   15
+
+
+struct rate_control_extra {
+       /* values from rate_control_get_rate() to the caller: */
+       struct ieee80211_rate *probe; /* probe with this rate, or NULL for no
+                                      * probing */
+       int startidx, endidx, rateidx;
+       struct ieee80211_rate *nonerp;
+       int nonerp_idx;
+
+       /* parameters from the caller to rate_control_get_rate(): */
+       int mgmt_data; /* this is data frame that is used for management
+                       * (e.g., IEEE 802.1X EAPOL) */
+       u16 ethertype;
+};
+
+
+struct rate_control_ops {
+       struct module *module;
+       const char *name;
+       void (*tx_status)(void *priv, struct net_device *dev,
+                         struct sk_buff *skb,
+                         struct ieee80211_tx_status *status);
+       struct ieee80211_rate *(*get_rate)(void *priv, struct net_device *dev,
+                                          struct sk_buff *skb,
+                                          struct rate_control_extra *extra);
+       void (*rate_init)(void *priv, void *priv_sta,
+                         struct ieee80211_local *local, struct sta_info *sta);
+       void (*clear)(void *priv);
+
+       void *(*alloc)(struct ieee80211_local *local);
+       void (*free)(void *priv);
+       void *(*alloc_sta)(void *priv, gfp_t gfp);
+       void (*free_sta)(void *priv, void *priv_sta);
+
+       int (*add_attrs)(void *priv, struct kobject *kobj);
+       void (*remove_attrs)(void *priv, struct kobject *kobj);
+       int (*add_sta_attrs)(void *priv, void *priv_sta,
+                            struct kobject *kobj);
+       void (*remove_sta_attrs)(void *priv, void *priv_sta,
+                                struct kobject *kobj);
+};
+
+struct rate_control_ref {
+       struct rate_control_ops *ops;
+       void *priv;
+       struct kref kref;
+};
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops);
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
+
+/* Get a reference to the rate control algorithm. If `name' is NULL, get the
+ * first available algorithm. */
+struct rate_control_ref *rate_control_alloc(const char *name,
+                                           struct ieee80211_local *local);
+struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
+void rate_control_put(struct rate_control_ref *ref);
+
+static inline void rate_control_tx_status(struct ieee80211_local *local,
+                                         struct net_device *dev,
+                                         struct sk_buff *skb,
+                                         struct ieee80211_tx_status *status)
+{
+       struct rate_control_ref *ref = local->rate_ctrl;
+       ref->ops->tx_status(ref->priv, dev, skb, status);
+}
+
+
+static inline struct ieee80211_rate *
+rate_control_get_rate(struct ieee80211_local *local, struct net_device *dev,
+                     struct sk_buff *skb, struct rate_control_extra *extra)
+{
+       struct rate_control_ref *ref = local->rate_ctrl;
+       return ref->ops->get_rate(ref->priv, dev, skb, extra);
+}
+
+
+static inline void rate_control_rate_init(struct sta_info *sta,
+                                         struct ieee80211_local *local)
+{
+       struct rate_control_ref *ref = sta->rate_ctrl;
+       ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
+}
+
+
+static inline void rate_control_clear(struct ieee80211_local *local)
+{
+       struct rate_control_ref *ref = local->rate_ctrl;
+       ref->ops->clear(ref->priv);
+}
+
+static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
+                                          gfp_t gfp)
+{
+       return ref->ops->alloc_sta(ref->priv, gfp);
+}
+
+static inline void rate_control_free_sta(struct rate_control_ref *ref,
+                                        void *priv)
+{
+       ref->ops->free_sta(ref->priv, priv);
+}
+
+static inline int rate_control_add_attrs(struct rate_control_ref *ref,
+                                        struct kobject *kobj)
+{
+       if (ref->ops->add_attrs)
+               return ref->ops->add_attrs(ref->priv, kobj);
+       return 0;
+}
+
+static inline void rate_control_remove_attrs(struct rate_control_ref *ref,
+                                            struct kobject *kobj)
+{
+       if (ref->ops->remove_attrs)
+               ref->ops->remove_attrs(ref->priv, kobj);
+}
+
+static inline int rate_control_add_sta_attrs(struct sta_info *sta,
+                                            struct kobject *kobj)
+{
+       struct rate_control_ref *ref = sta->rate_ctrl;
+       if (ref->ops->add_sta_attrs)
+               return ref->ops->add_sta_attrs(ref->priv, sta->rate_ctrl_priv,
+                                              kobj);
+       return 0;
+}
+
+static inline void rate_control_remove_sta_attrs(struct sta_info *sta,
+                                                struct kobject *kobj)
+{
+       struct rate_control_ref *ref = sta->rate_ctrl;
+       if (ref->ops->remove_sta_attrs)
+               ref->ops->remove_sta_attrs(ref->priv, sta->rate_ctrl_priv,
+                                          kobj);
+}
+
+#endif /* IEEE80211_RATE_H */