From: Antonio Quartulli <antonio@xxxxxxxxxxxxx>
Add the get_minstrel_best_rate() RC API in order to retrieve
the rate having the highest throughput. If the RC algorithm
implements such API, then fill the related field in
station_info when dumping a station.
This API is supposed to be implemented by Minstrel only.
Signed-off-by: Antonio Quartulli <antonio@xxxxxxxxxxxxx>
---
include/net/mac80211.h | 15 +++++++++++++++
net/mac80211/cfg.c | 15 +++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index df1004b..9ed56f8 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -4452,6 +4452,17 @@ struct ieee80211_tx_rate_control {
bool bss;
};
+/**
+ * struct ieee80211_minstrel_rate_info - rate information extracted from
+ * the Minstrel RC algorithm
+ * @rate: the reported bitrate
+ * @prob: probability of success of rate computed by Minstrel
+ */
+struct ieee80211_minstrel_rate_info {
+ struct ieee80211_tx_rate rate;
+ u32 prob;
+};
+
struct rate_control_ops {
struct module *module;
const char *name;
@@ -4478,6 +4489,10 @@ struct rate_control_ops {
void (*add_sta_debugfs)(void *priv, void *priv_sta,
struct dentry *dir);
void (*remove_sta_debugfs)(void *priv, void *priv_sta);
+
+ void (*get_minstrel_best_rate)
+ (void *priv, void *priv_sta,
+ struct ieee80211_minstrel_rate_info *info);
};
static inline int rate_supported(struct ieee80211_sta *sta,
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 032081c..c0d394c 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -463,6 +463,9 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
+ struct ieee80211_minstrel_rate_info info;
+ struct rate_control_ref *ref = local->rate_ctrl;
+ struct rate_info rinfo;
struct timespec uptime;
u64 packets = 0;
int i, ac;
@@ -578,6 +581,18 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
+
+ if (!ref->ops->get_minstrel_best_rate)
+ return;
+
+ sinfo->filled |= STATION_INFO_MINSTREL_BEST_RATE;
+
+ ref->ops->get_minstrel_best_rate(ref->priv, sta->rate_ctrl_priv, &info);
+
+ sta_set_rate_info_tx(sta, &info.rate, &rinfo);
+
+ sinfo->minstrel_best_rate.bitrate = cfg80211_calculate_bitrate(&rinfo);
+ sinfo->minstrel_best_rate.prob = info.prob;
}
static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
--
1.8.5.3
--
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