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authorBob Copeland <me@bobcopeland.com>2009-07-29 10:13:03 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-08-04 16:43:23 -0400
commit97af743207466ff8b477e14bfb7af0ba2c93375b (patch)
tree9fc275981b34346284c1aedd370c54854f5369ae /net/mac80211/iface.c
parentad2f34b41fd6e2b84c896ccf321d5de0a7c7cd52 (diff)
mac80211: disable beacons before removing the associated interface
When downing interfaces, it's a good idea to tell the driver to stop sending beacons; that way the driver doesn't need special code in ops->remove_interface() when it should already handle the case in bss_info_changed(). This fixes a potential crash with at least ath5k since the vif pointer will be nullified while beacon interrupts are still active. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/iface.c')
-rw-r--r--net/mac80211/iface.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 6c655b6547f..6614d4ff273 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -522,6 +522,16 @@ static int ieee80211_stop(struct net_device *dev)
ieee80211_scan_completed(&local->hw, true);
}
+ /*
+ * Disable beaconing for AP and mesh, IBSS can't
+ * still be joined to a network at this point.
+ */
+ if (sdata->vif.type == NL80211_IFTYPE_AP ||
+ sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_BEACON_ENABLED);
+ }
+
conf.vif = &sdata->vif;
conf.type = sdata->vif.type;
conf.mac_addr = dev->dev_addr;