+static inline int
+rate_supported(struct sta_info *sta, struct ieee80211_hw_mode *mode, int index)
+{
+ return (sta == NULL || sta->supp_rates & BIT(index)) &&
+ (mode->rates[index].flags & IEEE80211_RATE_SUPPORTED);
+}
+
+static inline int
+rate_lowest_index(struct ieee80211_local *local, struct ieee80211_hw_mode *mode,
+ struct sta_info *sta)
+{
+ int i;
+
+ for (i = 0; i < mode->num_rates; i++) {
+ if (rate_supported(sta, mode, i))
+ return i;
+ }
+
+ /* warn when we cannot find a rate. */
+ WARN_ON(1);
+
+ return 0;
+}
+
+static inline struct ieee80211_rate *
+rate_lowest(struct ieee80211_local *local, struct ieee80211_hw_mode *mode,
+ struct sta_info *sta)
+{
+ return &mode->rates[rate_lowest_index(local, mode, sta)];
+}
+
+
+/* functions for rate control related to a device */
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+ const char *name);
+void rate_control_deinitialize(struct ieee80211_local *local);
+
+
+/* Rate control algorithms */
+#if defined(RC80211_SIMPLE_COMPILE) || \
+ (defined(CONFIG_MAC80211_RC_SIMPLE) && \
+ !defined(CONFIG_MAC80211_RC_SIMPLE_MODULE))
+extern int rc80211_simple_init(void);
+extern void rc80211_simple_exit(void);
+#else
+static inline int rc80211_simple_init(void)
+{
+ return 0;
+}
+static inline void rc80211_simple_exit(void)
+{
+}
+#endif
+
+#if defined(RC80211_PID_COMPILE) || \
+ (defined(CONFIG_MAC80211_RC_PID) && \
+ !defined(CONFIG_MAC80211_RC_PID_MODULE))
+extern int rc80211_pid_init(void);
+extern void rc80211_pid_exit(void);
+#else
+static inline int rc80211_pid_init(void)
+{
+ return 0;
+}
+static inline void rc80211_pid_exit(void)
+{
+}
+#endif
+