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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/trace.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/trace.h')
-rw-r--r--net/wireless/trace.h22
1 files changed, 11 insertions, 11 deletions
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index a808279a432a..0c392d36781b 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -2670,30 +2670,30 @@ TRACE_EVENT(cfg80211_get_bss,
__entry->privacy)
);
-TRACE_EVENT(cfg80211_inform_bss_width_frame,
- TP_PROTO(struct wiphy *wiphy, struct ieee80211_channel *channel,
- enum nl80211_bss_scan_width scan_width,
- struct ieee80211_mgmt *mgmt, size_t len,
- s32 signal),
- TP_ARGS(wiphy, channel, scan_width, mgmt, len, signal),
+TRACE_EVENT(cfg80211_inform_bss_frame,
+ TP_PROTO(struct wiphy *wiphy, struct cfg80211_inform_bss *data,
+ struct ieee80211_mgmt *mgmt, size_t len),
+ TP_ARGS(wiphy, data, mgmt, len),
TP_STRUCT__entry(
WIPHY_ENTRY
CHAN_ENTRY
__field(enum nl80211_bss_scan_width, scan_width)
__dynamic_array(u8, mgmt, len)
__field(s32, signal)
+ __field(u64, ts_boottime)
),
TP_fast_assign(
WIPHY_ASSIGN;
- CHAN_ASSIGN(channel);
- __entry->scan_width = scan_width;
+ CHAN_ASSIGN(data->chan);
+ __entry->scan_width = data->scan_width;
if (mgmt)
memcpy(__get_dynamic_array(mgmt), mgmt, len);
- __entry->signal = signal;
+ __entry->signal = data->signal;
+ __entry->ts_boottime = data->boottime_ns;
),
- TP_printk(WIPHY_PR_FMT ", " CHAN_PR_FMT "(scan_width: %d) signal: %d",
+ TP_printk(WIPHY_PR_FMT ", " CHAN_PR_FMT "(scan_width: %d) signal: %d, tsb:%llu",
WIPHY_PR_ARG, CHAN_PR_ARG, __entry->scan_width,
- __entry->signal)
+ __entry->signal, (unsigned long long)__entry->ts_boottime)
);
DECLARE_EVENT_CLASS(cfg80211_bss_evt,