mac80211: Support getting sta_info stats via ethtool.
This lets ethtool print out stats related to stations
connected to the interface. Does not yet get stats
from the underlying driver.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 70b2af2..31023ca 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -450,6 +450,94 @@
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
}
+static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
+ "rx_packets", "rx_bytes", "wep_weak_iv_count",
+ "rx_duplicates", "rx_fragments", "rx_dropped",
+ "tx_packets", "tx_bytes", "tx_fragments",
+ "tx_filtered", "tx_retry_failed", "tx_retries",
+ "beacon_loss"
+};
+#define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
+
+static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
+ struct net_device *dev,
+ int sset)
+{
+ if (sset == ETH_SS_STATS)
+ return STA_STATS_LEN;
+
+ return -EOPNOTSUPP;
+}
+
+static void ieee80211_get_et_stats(struct wiphy *wiphy,
+ struct net_device *dev,
+ struct ethtool_stats *stats,
+ u64 *data)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sta_info *sta;
+ struct ieee80211_local *local = sdata->local;
+ int i;
+
+ memset(data, 0, sizeof(u64) * STA_STATS_LEN);
+
+#define ADD_STA_STATS(sta) \
+ do { \
+ data[i++] += sta->rx_packets; \
+ data[i++] += sta->rx_bytes; \
+ data[i++] += sta->wep_weak_iv_count; \
+ data[i++] += sta->num_duplicates; \
+ data[i++] += sta->rx_fragments; \
+ data[i++] += sta->rx_dropped; \
+ \
+ data[i++] += sta->tx_packets; \
+ data[i++] += sta->tx_bytes; \
+ data[i++] += sta->tx_fragments; \
+ data[i++] += sta->tx_filtered_count; \
+ data[i++] += sta->tx_retry_failed; \
+ data[i++] += sta->tx_retry_count; \
+ data[i++] += sta->beacon_loss_count; \
+ } while (0)
+
+ /* For Managed stations, find the single station based on BSSID
+ * and use that. For interface types, iterate through all available
+ * stations and add stats for any station that is assigned to this
+ * network device.
+ */
+
+ rcu_read_lock();
+
+ if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
+ if (sta && !WARN_ON(sta->sdata->dev != dev)) {
+ i = 0;
+ ADD_STA_STATS(sta);
+ BUG_ON(i != STA_STATS_LEN);
+ }
+ } else {
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ /* Make sure this station belongs to the proper dev */
+ if (sta->sdata->dev != dev)
+ continue;
+
+ i = 0;
+ ADD_STA_STATS(sta);
+ BUG_ON(i != STA_STATS_LEN);
+ }
+ }
+
+ rcu_read_unlock();
+}
+
+static void ieee80211_get_et_strings(struct wiphy *wiphy,
+ struct net_device *dev,
+ u32 sset, u8 *data)
+{
+ if (sset == ETH_SS_STATS) {
+ int sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
+ memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
+ }
+}
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *mac, struct station_info *sinfo)
@@ -2794,4 +2882,7 @@
#ifdef CONFIG_PM
.set_wakeup = ieee80211_set_wakeup,
#endif
+ .get_et_sset_count = ieee80211_get_et_sset_count,
+ .get_et_stats = ieee80211_get_et_stats,
+ .get_et_strings = ieee80211_get_et_strings,
};