mac80211: export the expected throughput

Add get_expected_throughput() API to mac80211 so that each
driver can implement its own version based on the RC
algorithm they are using (might be using an HW RC algo).
The API returns a value expressed in Kbps.

Also, add the new get_expected_throughput() member
to the rate_control_ops structure in order to be
able to query the RC algorithm (this patch provides an
implementation of this API for both minstrel and
minstrel_ht).

The related member in the station_info object is now
filled accordingly when dumping a station.

Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index df1d50291344..696ef78b1fb7 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -1156,4 +1156,17 @@ static inline void drv_leave_ibss(struct ieee80211_local *local,
         trace_drv_return_void(local);
 }
 
+static inline u32 drv_get_expected_throughput(struct ieee80211_local *local,
+                                              struct ieee80211_sta *sta)
+{
+        u32 ret = 0;
+
+        trace_drv_get_expected_throughput(sta);
+        if (local->ops->get_expected_throughput)
+                ret = local->ops->get_expected_throughput(sta);
+        trace_drv_return_u32(local, ret);
+
+        return ret;
+}
+
 #endif /* __MAC80211_DRIVER_OPS */