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cfg80211: add channel utilization stats to the survey command

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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>
This commit is contained in:
Felix Fietkau
2010-10-09 02:39:29 +02:00
committed by John W. Linville
parent 15943a72c7
commit 8610c29a2c
3 changed files with 50 additions and 0 deletions
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15
include/linux/nl80211.h
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@@ -1413,6 +1413,16 @@ enum nl80211_reg_rule_flags {
* @NL80211_SURVEY_INFO_FREQUENCY: center frequency of channel
* @NL80211_SURVEY_INFO_NOISE: noise level of channel (u8, dBm)
* @NL80211_SURVEY_INFO_IN_USE: channel is currently being used
* @NL80211_SURVEY_INFO_CHANNEL_TIME: amount of time (in ms) that the radio
* spent on this channel
* @NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY: amount of the time the primary
* channel was sensed busy (either due to activity or energy detect)
* @NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: amount of time the extension
* channel was sensed busy
* @NL80211_SURVEY_INFO_CHANNEL_TIME_RX: amount of time the radio spent
* receiving data
* @NL80211_SURVEY_INFO_CHANNEL_TIME_TX: amount of time the radio spent
* transmitting data
* @NL80211_SURVEY_INFO_MAX: highest survey info attribute number
* currently defined
* @__NL80211_SURVEY_INFO_AFTER_LAST: internal use
@@ -1422,6 +1432,11 @@ enum nl80211_survey_info {
NL80211_SURVEY_INFO_FREQUENCY,
NL80211_SURVEY_INFO_NOISE,
NL80211_SURVEY_INFO_IN_USE,
NL80211_SURVEY_INFO_CHANNEL_TIME,
NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
/* keep last */
__NL80211_SURVEY_INFO_AFTER_LAST,