* Johannes Berg <johannes@xxxxxxxxxxxxxxxx> [17.05.2017 20:18]: > On Wed, 2017-05-17 at 12:08 +0200, Bastian Bittorf wrote: > > * Ben Greear <greearb@xxxxxxxxxxxxxxx> [17.05.2017 11:51]: [...] > > > kernels, but when testing on 4.9 overnight, I notice that 'iw > > > events' is not showing any input. 'strace' shows > > > that it is waiting on recvmsg. If I start a second 'iw events' > > > then it will get > > > wifi events as expected. > > > > me too, also seen on 4.4 - i'am happy for debug ideas. > > I've never seen this. > > Does it happen when it's very long-running? Or when there are lots of > events? only a couple of hours. hard to say which is the culprit. here i run it like: #!/bin/sh iw event | while read -r LINE; do case "$LINE" in *': new station '*) ... ;; *': del station '*) ... ;; esac done The script marks new stations with "touch /tmp/$mac" and removes this file during 'del station'. What is interesting: i can recognize, that sometimes and somehow i have stations in 'iw dev wlanX station dump' which the script has not seen. When debugging this, the script does not get any new events. A new started 'iw event' can see further events without problems. Hard to say where the error happens. I'am on busybox here. bye, Bastian
