From: Antonio Quartulli <antonio@xxxxxxxxxxxxx>
Users may need information about the best rate used by
minstrel for a particular wireless device.
Export such rate and its success probability through the
get_station() API.
The exported information is Minstrel specific only,
therefore drivers not using such RC algorithm should not
report this data.
This information is useful to the batman-adv module which
will use it for its new metric computation.
Signed-off-by: Antonio Quartulli <antonio@xxxxxxxxxxxxx>
---
include/net/cfg80211.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d5e57bf..51d5d94 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -854,6 +854,7 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
* @STATION_INFO_NONPEER_PM: @nonpeer_pm filled
* @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled
* @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg filled
+ * @STATION_INFO_MINSTREL_BEST_RATE: @minstrel_best_rate filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@@ -884,6 +885,7 @@ enum station_info_flags {
STATION_INFO_TX_BYTES64 = 1<<25,
STATION_INFO_CHAIN_SIGNAL = 1<<26,
STATION_INFO_CHAIN_SIGNAL_AVG = 1<<27,
+ STATION_INFO_MINSTREL_BEST_RATE = 1<<28,
};
/**
@@ -963,6 +965,16 @@ struct sta_bss_parameters {
#define IEEE80211_MAX_CHAINS 4
/**
+ * struct cfg80211_minstral_rate_info - exported minstrel rate information
+ * @bitrate: current chosen TX bitrate
+ * @prob: probability of success of this birate
+ */
+struct cfg80211_minstrel_rate_info {
+ u32 bitrate;
+ u32 prob;
+};
+
+/**
* struct station_info - station information
*
* Station information filled by driver for get_station() and dump_station.
@@ -1005,6 +1017,9 @@ struct sta_bss_parameters {
* @local_pm: local mesh STA power save mode
* @peer_pm: peer mesh STA power save mode
* @nonpeer_pm: non-peer mesh STA power save mode
+ * @minstrel_best_rate: information extracted from the Minstrel RC algorithm
+ * about the bitrate having the maximum throughput. This field can be filled
+ * only by drivers using Minstrel
*/
struct station_info {
u32 filled;
@@ -1043,6 +1058,8 @@ struct station_info {
enum nl80211_mesh_power_mode peer_pm;
enum nl80211_mesh_power_mode nonpeer_pm;
+ struct cfg80211_minstrel_rate_info minstrel_best_rate;
+
/*
* Note: Add a new enum station_info_flags value for each new field and
* use it to check which fields are initialized.
--
1.8.5.3
--
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