cfg80211: add channel utilization stats to the survey command
Using these, user space can calculate a relative channel utilization
with arbitrary intervals by regularly taking snapshots of the survey
results.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 882dc92..c506241 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3153,6 +3153,21 @@
survey->noise);
if (survey->filled & SURVEY_INFO_IN_USE)
NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
+ if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
+ NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
+ survey->channel_time);
+ if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
+ NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
+ survey->channel_time_busy);
+ if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
+ NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
+ survey->channel_time_ext_busy);
+ if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
+ NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
+ survey->channel_time_rx);
+ if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
+ NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
+ survey->channel_time_tx);
nla_nest_end(msg, infoattr);