From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
This patch adds the interval between the scan results and the last time a
beacon was received in the result of the scan.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
---
net/mac80211/mlme.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 7b930d1..e76e62a 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4658,12 +4658,26 @@ ieee80211_sta_scan_result(struct net_device *dev,
char *buf;
buf = kmalloc(30, GFP_ATOMIC);
if (buf) {
+ unsigned long mid_range = (-1) / 2 + 1;
+ unsigned long time_diff;
+
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = IWEVCUSTOM;
sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
iwe.u.data.length = strlen(buf);
current_ev = iwe_stream_add_point(current_ev, end_buf,
&iwe, buf);
+ memset(&iwe, 0, sizeof(iwe));
+
+ iwe.cmd = IWEVCUSTOM;
+ time_diff = jiffies - bss->last_update > mid_range ?
+ jiffies - bss->last_update :
+ bss->last_update - jiffies;
+ sprintf(buf, "Last beacon:%dms ago",
+ jiffies_to_msecs(time_diff));
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
kfree(buf);
}
}
--
1.5.4.1
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