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authorAlina Friedrichsen <x-alina@gmx.net>2009-02-22 18:19:33 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-02-27 14:53:03 -0500
commit4a332a385a86e31bfe181d969a8cb5579798fe03 (patch)
tree52608f9c9b1de70004acddacc7d359b1cd98b9a0
parent34e8f08231388f9e16c6f1e2461f53afaf7f1e5e (diff)
mac80211: Give it some time to do the TSF sync
Give slow hardware some time to do the TSF sync, to not run into an IBSS merging endless loop in some rarely situations. Signed-off-by: Alina Friedrichsen <x-alina@gmx.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--net/mac80211/ibss.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 7a944ca1c840..a96ce9dfc6b5 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -29,6 +29,7 @@
#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
+#define IEEE80211_IBSS_MERGE_DELAY 0x400000
#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
@@ -336,6 +337,10 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
jiffies);
#endif
+ /* give slow hardware some time to do the TSF sync */
+ if (rx_timestamp < IEEE80211_IBSS_MERGE_DELAY)
+ goto put_bss;
+
if (beacon_timestamp > rx_timestamp) {
#ifdef CONFIG_MAC80211_IBSS_DEBUG
printk(KERN_DEBUG "%s: beacon TSF higher than "