From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 20 Dec 2009 11:04:43 +0000 (+0000)
Subject: mac80211: fix a race condition in ad-hoc bringup with fixed bssid
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fyousong.git;a=commitdiff_plain;h=6d3d1504cf17e95b670e7ef83bcc42021b7fb9b6

mac80211: fix a race condition in ad-hoc bringup with fixed bssid

SVN-Revision: 18859
---

diff --git a/package/mac80211/patches/200-mac80211_ibss_fix.patch b/package/mac80211/patches/200-mac80211_ibss_fix.patch
new file mode 100644
index 0000000000..c2fb1d7a25
--- /dev/null
+++ b/package/mac80211/patches/200-mac80211_ibss_fix.patch
@@ -0,0 +1,20 @@
+--- a/net/mac80211/ibss.c
++++ b/net/mac80211/ibss.c
+@@ -382,6 +382,7 @@ static void ieee80211_rx_bss_info(struct
+ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
+ 					u8 *bssid,u8 *addr, u32 supp_rates)
+ {
++	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ 	struct ieee80211_local *local = sdata->local;
+ 	struct sta_info *sta;
+ 	int band = local->hw.conf.channel->band;
+@@ -397,6 +398,9 @@ struct sta_info *ieee80211_ibss_add_sta(
+ 		return NULL;
+ 	}
+ 
++	if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH)
++		return NULL;
++
+ 	if (compare_ether_addr(bssid, sdata->u.ibss.bssid))
+ 		return NULL;
+