diff options
| author | Dmitry Shmidt <dimitrysh@google.com> | 2015-10-07 12:32:53 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-10-13 11:32:17 +0300 |
| commit | 6e19bc4b7091ffd26586100eee78232b44427ec7 (patch) | |
| tree | 59d7cf810ede8dcf6ab66674c296738f35ae8bc7 /include/uapi/linux | |
| parent | 93f0490e5deb9445737cabf0e436f3288a4042b7 (diff) | |
| download | linux-6e19bc4b7091ffd26586100eee78232b44427ec7.tar.xz | |
nl80211: allow BSS data to include CLOCK_BOOTTIME timestamp
For location and connectivity services, userspace would often like
to know the time when the BSS was last seen. The current "last seen"
value is calculated in a way that makes it less useful, especially
if the system suspended in the meantime.
Add the ability for the driver to report a real CLOCK_BOOTTIME stamp
that can then be reported to userspace (if present).
Drivers wishing to use this must be converted to the new API to call
cfg80211_inform_bss_data() or cfg80211_inform_bss_frame_data(). They
need to ensure the reported value is accurate enough even when the
frame might have been buffered in the device (e.g. firmware.)
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[modified to use struct, inlines]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/nl80211.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index c0ab6b0a3919..5dadb844fe18 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -3364,6 +3364,9 @@ enum nl80211_bss_scan_width { * (not present if no beacon frame has been received yet) * @NL80211_BSS_PRESP_DATA: the data in @NL80211_BSS_INFORMATION_ELEMENTS and * @NL80211_BSS_TSF is known to be from a probe response (flag attribute) + * @NL80211_BSS_LAST_SEEN_BOOTTIME: CLOCK_BOOTTIME timestamp when this entry + * was last updated by a received frame. The value is expected to be + * accurate to about 10ms. (u64, nanoseconds) * @__NL80211_BSS_AFTER_LAST: internal * @NL80211_BSS_MAX: highest BSS attribute */ @@ -3383,6 +3386,7 @@ enum nl80211_bss { NL80211_BSS_CHAN_WIDTH, NL80211_BSS_BEACON_TSF, NL80211_BSS_PRESP_DATA, + NL80211_BSS_LAST_SEEN_BOOTTIME, /* keep last */ __NL80211_BSS_AFTER_LAST, |