diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2016-01-27 15:29:34 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2016-01-29 19:13:43 +0300 |
| commit | cb150b9d23be6ee7f3a0fff29784f1c5b5ac514d (patch) | |
| tree | 616d91ae927e048344c8852a41a08898103794bd /include/net/iw_handler.h | |
| parent | 8bf862739a7786ae72409220914df960a0aa80d8 (diff) | |
| download | linux-cb150b9d23be6ee7f3a0fff29784f1c5b5ac514d.tar.xz | |
cfg80211/wext: fix message ordering
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.
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'include/net/iw_handler.h')
| -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 8f81bbbc38fc..e0f4109e64c6 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... */ |