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authorAntonio Quartulli <antonio@open-mesh.com>2013-07-26 21:15:02 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-08-01 10:49:02 +0200
commitdad9defd28912dc408763d461b9a6b1a762c07ea (patch)
tree4276213b0ff6c35878d68bb54e709563cb377140 /net/mac80211
parente47f2509e5f182f4df144406de6f2bc78179d57e (diff)
downloadlinux-dad9defd28912dc408763d461b9a6b1a762c07ea.tar.bz2
mac80211: ibss - remove not authorized station earlier
A station which is not authorized has to be purged earlier to give it a chance to re-try to establish an IBSS/RSN session soon. Set the timeout to 10 seconds. Some refactoring has also been done to allow the IBSS submodule to have its own expiring function. Reported-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/ibss.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 5e6836c3aa4c..e08387cdc8fd 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -30,6 +30,7 @@
#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
+#define IEEE80211_IBSS_RSN_INACTIVITY_LIMIT (10 * HZ)
#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
@@ -740,6 +741,33 @@ static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
return active;
}
+static void ieee80211_ibss_sta_expire(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct sta_info *sta, *tmp;
+ unsigned long exp_time = IEEE80211_IBSS_INACTIVITY_LIMIT;
+ unsigned long exp_rsn_time = IEEE80211_IBSS_RSN_INACTIVITY_LIMIT;
+
+ mutex_lock(&local->sta_mtx);
+
+ list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
+ if (sdata != sta->sdata)
+ continue;
+
+ if (time_after(jiffies, sta->last_rx + exp_time) ||
+ (time_after(jiffies, sta->last_rx + exp_rsn_time) &&
+ sta->sta_state != IEEE80211_STA_AUTHORIZED)) {
+ sta_dbg(sta->sdata, "expiring inactive %sSTA %pM\n",
+ sta->sta_state != IEEE80211_STA_AUTHORIZED ?
+ "not authorized " : "", sta->sta.addr);
+
+ WARN_ON(__sta_info_destroy(sta));
+ }
+ }
+
+ mutex_unlock(&local->sta_mtx);
+}
+
/*
* This function is called with state == IEEE80211_IBSS_MLME_JOINED
*/
@@ -754,7 +782,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
mod_timer(&ifibss->timer,
round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
- ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT);
+ ieee80211_ibss_sta_expire(sdata);
if (time_before(jiffies, ifibss->last_scan_completed +
IEEE80211_IBSS_MERGE_INTERVAL))