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Commit b1ab7925 authored by Ben Greear's avatar Ben Greear Committed by John W. Linville
Browse files

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: default avatarBen Greear <greearb@candelatech.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent d6199218

net/mac80211/cfg.c

+91 −0
Original line number Diff line number Diff line
@@ -450,6 +450,94 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 
		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 @@ struct cfg80211_ops mac80211_config_ops = { 
#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,

};