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authorDmitry Shmidt <dimitrysh@google.com>2015-10-07 12:32:53 +0300
committerJohannes Berg <johannes.berg@intel.com>2015-10-13 11:32:17 +0300
commit6e19bc4b7091ffd26586100eee78232b44427ec7 (patch)
tree59d7cf810ede8dcf6ab66674c296738f35ae8bc7 /net/wireless/core.h
parent93f0490e5deb9445737cabf0e436f3288a4042b7 (diff)
downloadlinux-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 'net/wireless/core.h')
-rw-r--r--net/wireless/core.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h
index b9d5bc8c148d..a618b4b86fa4 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -137,6 +137,7 @@ struct cfg80211_internal_bss {
struct list_head list;
struct list_head hidden_list;
struct rb_node rbn;
+ u64 ts_boottime;
unsigned long ts;
unsigned long refcount;
atomic_t hold;