From 4a332a385a86e31bfe181d969a8cb5579798fe03 Mon Sep 17 00:00:00 2001 From: Alina Friedrichsen Date: Sun, 22 Feb 2009 18:19:33 +0100 Subject: 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 Signed-off-by: John W. Linville --- net/mac80211/ibss.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'net') 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 " -- cgit v1.2.2