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authorToke Høiland-Jørgensen <toke@toke.dk>2018-05-08 14:03:50 +0300
committerJohannes Berg <johannes.berg@intel.com>2018-05-08 14:19:24 +0300
commit52539ca89f365d3db530535fbffa88a3cca4d2ec (patch)
tree5bfc75ba1383976149d0c99a3f87bb9ef69af4e8 /net/mac80211/ethtool.c
parentcc60dbbfed8ff0bd4c530ee48e9e915333a35470 (diff)
downloadlinux-52539ca89f365d3db530535fbffa88a3cca4d2ec.tar.xz
cfg80211: Expose TXQ stats and parameters to userspace
This adds support for exporting the mac80211 TXQ stats via nl80211 by way of a nested TXQ stats attribute, as well as for configuring the quantum and limits that were previously only changeable through debugfs. This commit adds just the nl80211 API, a subsequent commit adds support to mac80211 itself. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/ethtool.c')
-rw-r--r--net/mac80211/ethtool.c32
1 files changed, 19 insertions, 13 deletions
diff --git a/net/mac80211/ethtool.c b/net/mac80211/ethtool.c
index 08408520c3f8..1afeff94af8b 100644
--- a/net/mac80211/ethtool.c
+++ b/net/mac80211/ethtool.c
@@ -71,11 +71,15 @@ static void ieee80211_get_stats(struct net_device *dev,
struct ieee80211_channel *channel;
struct sta_info *sta;
struct ieee80211_local *local = sdata->local;
- struct station_info sinfo;
+ struct station_info *sinfo;
struct survey_info survey;
int i, q;
#define STA_STATS_SURVEY_LEN 7
+ sinfo = kmalloc(sizeof(*sinfo), GFP_KERNEL);
+ if (!sinfo)
+ return;
+
memset(data, 0, sizeof(u64) * STA_STATS_LEN);
#define ADD_STA_STATS(sta) \
@@ -86,8 +90,8 @@ static void ieee80211_get_stats(struct net_device *dev,
data[i++] += sta->rx_stats.fragments; \
data[i++] += sta->rx_stats.dropped; \
\
- data[i++] += sinfo.tx_packets; \
- data[i++] += sinfo.tx_bytes; \
+ data[i++] += sinfo->tx_packets; \
+ data[i++] += sinfo->tx_bytes; \
data[i++] += sta->status_stats.filtered; \
data[i++] += sta->status_stats.retry_failed; \
data[i++] += sta->status_stats.retry_count; \
@@ -107,8 +111,8 @@ static void ieee80211_get_stats(struct net_device *dev,
if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
goto do_survey;
- memset(&sinfo, 0, sizeof(sinfo));
- sta_set_sinfo(sta, &sinfo);
+ memset(sinfo, 0, sizeof(*sinfo));
+ sta_set_sinfo(sta, sinfo);
i = 0;
ADD_STA_STATS(sta);
@@ -116,17 +120,17 @@ static void ieee80211_get_stats(struct net_device *dev,
data[i++] = sta->sta_state;
- if (sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE))
+ if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))
data[i] = 100000 *
- cfg80211_calculate_bitrate(&sinfo.txrate);
+ cfg80211_calculate_bitrate(&sinfo->txrate);
i++;
- if (sinfo.filled & BIT(NL80211_STA_INFO_RX_BITRATE))
+ if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))
data[i] = 100000 *
- cfg80211_calculate_bitrate(&sinfo.rxrate);
+ cfg80211_calculate_bitrate(&sinfo->rxrate);
i++;
- if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))
- data[i] = (u8)sinfo.signal_avg;
+ if (sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))
+ data[i] = (u8)sinfo->signal_avg;
i++;
} else {
list_for_each_entry(sta, &local->sta_list, list) {
@@ -134,14 +138,16 @@ static void ieee80211_get_stats(struct net_device *dev,
if (sta->sdata->dev != dev)
continue;
- memset(&sinfo, 0, sizeof(sinfo));
- sta_set_sinfo(sta, &sinfo);
+ memset(sinfo, 0, sizeof(*sinfo));
+ sta_set_sinfo(sta, sinfo);
i = 0;
ADD_STA_STATS(sta);
}
}
do_survey:
+ kfree(sinfo);
+
i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
/* Get survey stats for current channel */
survey.filled = 0;