diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2016-01-27 13:29:34 +0100 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2016-03-24 10:01:07 +0000 |
| commit | 603874c62e4f3e88a151872f3c8bb4ccb7d27717 (patch) | |
| tree | aaa292b61d45d3fb3afbd0a3bb44db663774e485 /include | |
| parent | d809857aeb6706fa6085237e6cc3a2a76fff0369 (diff) | |
cfg80211/wext: fix message ordering
commit cb150b9d23be6ee7f3a0fff29784f1c5b5ac514d upstream.
Since cfg80211 frequently takes actions from its netdev notifier
call, wireless extensions messages could still be ordered badly
since the wext netdev notifier, since wext is built into the
kernel, runs before the cfg80211 netdev notifier. For example,
the following can happen:
5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default
link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff
5: wlan1: <BROADCAST,MULTICAST,UP>
link/ether
when setting the interface down causes the wext message.
To also fix this, export the wireless_nlevent_flush() function
and also call it from the cfg80211 notifier.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/iw_handler.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/net/iw_handler.h b/include/net/iw_handler.h index a830b01baba4..e8aa72eaded5 100644 --- a/include/net/iw_handler.h +++ b/include/net/iw_handler.h @@ -439,6 +439,12 @@ int dev_get_wireless_info(char *buffer, char **start, off_t offset, int length); /* Send a single event to user space */ void wireless_send_event(struct net_device *dev, unsigned int cmd, union iwreq_data *wrqu, const char *extra); +#ifdef CONFIG_WEXT_CORE +/* flush all previous wext events - if work is done from netdev notifiers */ +void wireless_nlevent_flush(void); +#else +static inline void wireless_nlevent_flush(void) {} +#endif /* We may need a function to send a stream of events to user space. * More on that later... */ |