diff options
| author | Ahmed Zaki <anzaki@gmail.com> | 2019-10-31 06:12:43 -0600 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2019-11-08 09:17:28 +0100 |
| commit | 285531f9e6774e3be71da6673d475ff1a088d675 (patch) | |
| tree | cb3c05420787cef15b264b35b6b8ea6936f181e3 | |
| parent | 71e67c3bd127cfe7863f54e4b087eba1cc8f9a7a (diff) | |
| download | lwn-285531f9e6774e3be71da6673d475ff1a088d675.tar.gz lwn-285531f9e6774e3be71da6673d475ff1a088d675.zip | |
mac80211: fix station inactive_time shortly after boot
In the first 5 minutes after boot (time of INITIAL_JIFFIES),
ieee80211_sta_last_active() returns zero if last_ack is zero. This
leads to "inactive time" showing jiffies_to_msecs(jiffies).
# iw wlan0 station get fc:ec:da:64:a6:dd
Station fc:ec:da:64:a6:dd (on wlan0)
inactive time: 4294894049 ms
.
.
connected time: 70 seconds
Fix by returning last_rx if last_ack == 0.
Signed-off-by: Ahmed Zaki <anzaki@gmail.com>
Link: https://lore.kernel.org/r/20191031121243.27694-1-anzaki@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | net/mac80211/sta_info.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index bd11fef2139f..8d3a2389b055 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -2457,7 +2457,8 @@ unsigned long ieee80211_sta_last_active(struct sta_info *sta) { struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta); - if (time_after(stats->last_rx, sta->status_stats.last_ack)) + if (!sta->status_stats.last_ack || + time_after(stats->last_rx, sta->status_stats.last_ack)) return stats->last_rx; return sta->status_stats.last_ack; } |