From: Johannes Berg <johannes.berg@xxxxxxxxx>
This was requested by Android, and the appropriate cfg80211 API
had been added by Dmitry. Support it in mac80211, allowing drivers
to provide the timestamp.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
include/net/mac80211.h | 3 +++
net/mac80211/scan.c | 4 +++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9cf92d0..7cb791f 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1123,6 +1123,8 @@ enum mac80211_rx_vht_flags {
*
* @mactime: value in microseconds of the 64-bit Time Synchronization Function
* (TSF) timer when the first data symbol (MPDU) arrived at the hardware.
+ * @boottime_ns: CLOCK_BOOTTIME timestamp the frame was received at, this is
+ * needed only for beacons and probe responses that update the scan cache.
* @device_timestamp: arbitrary timestamp for the device, mac80211 doesn't use
* it but can store it and pass it back to the driver for synchronisation
* @band: the active band when this frame was received
@@ -1149,6 +1151,7 @@ enum mac80211_rx_vht_flags {
*/
struct ieee80211_rx_status {
u64 mactime;
+ u64 boottime_ns;
u32 device_timestamp;
u32 ampdu_reference;
u64 flag;
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index a413e52..612f410 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -66,7 +66,9 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
struct cfg80211_bss *cbss;
struct ieee80211_bss *bss;
int clen, srlen;
- struct cfg80211_inform_bss bss_meta = {};
+ struct cfg80211_inform_bss bss_meta = {
+ .boottime_ns = rx_status->boottime_ns,
+ };
bool signal_valid;
if (ieee80211_hw_check(&local->hw, SIGNAL_DBM))
--
2.5.0
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