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cfg80211: add channel utilization stats to the survey command

Browse source 
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 <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Felix Fietkau 2010-10-09 02:39:29 +02:00 • committed by John W. Linville
commit 8610c29a2c
3 changed files with 50 additions and 0 deletions
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15
net/wireless/nl80211.c
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@ -3153,6 +3153,21 @@ static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
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);