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nl80211: allow drivers to indicate whether the survey data channel is in use

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Some user space applications only want to display survey data for
the operating channel, however there is no API to get that yet.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-09-29 17:15:30 +02:00 committed by John W. Linville
parent 0bda652300
commit 17e5a80828
3 changed files with 6 additions and 0 deletions
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2
include/linux/nl80211.h
View File

@ -1400,6 +1400,7 @@ enum nl80211_reg_rule_flags {
* @__NL80211_SURVEY_INFO_INVALID: attribute number 0 is reserved
* @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_MAX: highest survey info attribute number
* currently defined
* @__NL80211_SURVEY_INFO_AFTER_LAST: internal use
@ -1408,6 +1409,7 @@ enum nl80211_survey_info {
__NL80211_SURVEY_INFO_INVALID,
NL80211_SURVEY_INFO_FREQUENCY,
NL80211_SURVEY_INFO_NOISE,
NL80211_SURVEY_INFO_IN_USE,
/* keep last */
__NL80211_SURVEY_INFO_AFTER_LAST,

2
include/net/cfg80211.h
View File

@ -293,12 +293,14 @@ struct key_params {
* enum survey_info_flags - survey information flags
*
* @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
* @SURVEY_INFO_IN_USE: channel is currently being used
*
* Used by the driver to indicate which info in &struct survey_info
* it has filled in during the get_survey().
*/
enum survey_info_flags {
SURVEY_INFO_NOISE_DBM = 1<<0,
SURVEY_INFO_IN_USE = 1<<1,
};
/**

2
net/wireless/nl80211.c
View File

@ -3489,6 +3489,8 @@ static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
if (survey->filled & SURVEY_INFO_NOISE_DBM)
NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
survey->noise);
if (survey->filled & SURVEY_INFO_IN_USE)
NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
nla_nest_end(msg, infoattr);