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mac80211: fix ibss join with fixed-bssid

PATCH New Felix Fietkau 1 participant 1 message Dec 20, 2009 mac80211

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PATCH 1/1 mac80211: fix ibss join with fixed-bssid

When fixed bssid is requested when joining an ibss network, incoming beacons that match the configured bssid cause mac80211 to create new sta entries, even before the ibss interface is in joined state. When that happens, it fails to bring up the interface entirely, because it checks for existing sta entries before joining.
This patch fixes this bug by refusing to create sta info entries before the interface is fully operational.

---

net/mac80211/ibss.c +4 -0
@@ -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;