From 7b4396bd6868f3d665c5f4cb53a9bdde5a2f4bf2 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sat, 23 Feb 2013 01:14:20 +0100 Subject: [PATCH] mac80211: flush keys when stopping AP Since hostapd will remove keys this isn't usually an issue, but we shouldn't leak keys to the next BSS started on the same interface. For VLANs this also fixes a bug, keys that aren't removed would otherwise be leaked. Signed-off-by: Johannes Berg --- net/mac80211/cfg.c | 5 ++++- net/mac80211/iface.c | 2 +- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 8baa561c8f5b..9d708f9e246e 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1035,9 +1035,12 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) sta_info_flush_defer(vlan); sta_info_flush_defer(sdata); rcu_barrier(); - list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) + list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { sta_info_flush_cleanup(vlan); + ieee80211_free_keys(vlan); + } sta_info_flush_cleanup(sdata); + ieee80211_free_keys(sdata); sdata->vif.bss_conf.enable_beacon = false; clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 8e0bf34f3f68..290de4d99697 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -840,7 +840,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, /* * Free all remaining keys, there shouldn't be any, - * except maybe group keys in AP more or WDS? + * except maybe in WDS mode? */ ieee80211_free_keys(sdata); -- 2.39.5