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authorSimon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>2012-11-13 18:43:03 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-12-03 12:59:14 -0800
commit34ef0d5705afa428c02781a5c12f3178caa12559 (patch)
tree40c4d6fcd181f3018b0c4c489488307282c7019a
parentbeb93b17f27dee8a85db7bf0d882b59cdff4b2a0 (diff)
mac80211: deinitialize ibss-internals after emptiness check
commit b78a4932f5fb11fadf41e69c606a33fa6787574c upstream. The check whether the IBSS is active and can be removed should be performed before deinitializing the fields used for the check/search. Otherwise, the configured BSS will not be found and removed properly. To make it more clear for the future, rename sdata->u.ibss to the local pointer ifibss which is used within the checks. This behaviour was introduced by f3209bea110cade12e2b133da8b8499689cb0e2e ("mac80211: fix IBSS teardown race") Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Cc: Ignacy Gawedzki <i@lri.fr> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--net/mac80211/ibss.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 8adcc9e93b01..c6399f6cbc9e 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -965,10 +965,6 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
mutex_lock(&sdata->u.ibss.mtx);
- sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
- memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
- sdata->u.ibss.ssid_len = 0;
-
active_ibss = ieee80211_sta_active_ibss(sdata);
if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) {
@@ -989,6 +985,10 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
}
}
+ ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
+ memset(ifibss->bssid, 0, ETH_ALEN);
+ ifibss->ssid_len = 0;
+
sta_info_flush(sdata->local, sdata);
/* remove beacon */