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mac80211: Add more ethtools stats: survey, rates, etc

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The signal and noise are forced to be positive since ethtool
deals in unsigned 64-bit values and this number should be human
readable.  This gives easy access to some of the data formerly
exposed in the deprecated /proc/net/wireless file.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ben Greear 2012-04-23 12:50:32 -07:00 committed by John W. Linville
parent e352114fd6
commit 3073a7c20c
1 changed files with 81 additions and 8 deletions
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89
net/mac80211/cfg.c
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@ -455,7 +455,9 @@ static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
"rx_duplicates", "rx_fragments", "rx_dropped",
"tx_packets", "tx_bytes", "tx_fragments",
"tx_filtered", "tx_retry_failed", "tx_retries",
"beacon_loss"
"beacon_loss", "sta_state", "txrate", "rxrate", "signal",
"channel", "noise", "ch_time", "ch_time_busy",
"ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
};
#define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
@ -484,7 +486,10 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct sta_info *sta;
struct ieee80211_local *local = sdata->local;
int i;
struct station_info sinfo;
struct survey_info survey;
int i, q;
#define STA_STATS_SURVEY_LEN 7
memset(data, 0, sizeof(u64) * STA_STATS_LEN);
@ -516,11 +521,30 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy,
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);
}
if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
goto do_survey;
i = 0;
ADD_STA_STATS(sta);
data[i++] = sta->sta_state;
sinfo.filled = 0;
sta_set_sinfo(sta, &sinfo);
if (sinfo.filled | STATION_INFO_TX_BITRATE)
data[i] = 100000 *
cfg80211_calculate_bitrate(&sinfo.txrate);
i++;
if (sinfo.filled | STATION_INFO_RX_BITRATE)
data[i] = 100000 *
cfg80211_calculate_bitrate(&sinfo.rxrate);
i++;
if (sinfo.filled | STATION_INFO_SIGNAL_AVG)
data[i] = (u8)sinfo.signal_avg;
i++;
} else {
list_for_each_entry_rcu(sta, &local->sta_list, list) {
/* Make sure this station belongs to the proper dev */
@ -529,12 +553,61 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy,
i = 0;
ADD_STA_STATS(sta);
BUG_ON(i != STA_STATS_LEN);
}
}
do_survey:
i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
/* Get survey stats for current channel */
q = 0;
while (true) {
survey.filled = 0;
if (drv_get_survey(local, q, &survey) != 0) {
survey.filled = 0;
break;
}
if (survey.channel &&
(local->oper_channel->center_freq ==
survey.channel->center_freq))
break;
q++;
}
if (survey.filled)
data[i++] = survey.channel->center_freq;
else
data[i++] = 0;
if (survey.filled & SURVEY_INFO_NOISE_DBM)
data[i++] = (u8)survey.noise;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
data[i++] = survey.channel_time;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
data[i++] = survey.channel_time_busy;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
data[i++] = survey.channel_time_ext_busy;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
data[i++] = survey.channel_time_rx;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
data[i++] = survey.channel_time_tx;
else
data[i++] = -1LL;
rcu_read_unlock();
if (WARN_ON(i != STA_STATS_LEN))
return;
drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
}