From: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Recent commit "mac80211: fix logic error ibss merge bssid check" fixed
joining of ibss cell when static bssid is provided. In this case
ifibss->bssid is set before the cell is joined and comparing that address
to a bss should thus always succeed. Unfortunately this change broke the
other case of joining a ibss cell without providing a static bssid where
the value of ifibss->bssid is not set before the cell is joined.
Since ifibss->bssid may be set before or after joining the cell we do not
learn anything by comparing it to a known bss. Remove this check.
Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
---
I tested this change with static bssid and without.
The symptom without this patch is that it is not possible to join an ad-hoc
cell unless you provide a bssid. When you want to join an existing cell a
new cell will be created.
net/mac80211/ibss.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 6eaf698..ca8ecce 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -538,13 +538,12 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
WLAN_CAPABILITY_PRIVACY,
capability);
+ if (bss) {
#ifdef CONFIG_MAC80211_IBSS_DEBUG
- if (bss)
printk(KERN_DEBUG " sta_find_ibss: selected %pM current "
"%pM\n", bss->cbss.bssid, ifibss->bssid);
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- if (bss && !memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN)) {
printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM"
" based on configured SSID\n",
sdata->dev->name, bss->cbss.bssid);
@@ -552,8 +551,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
ieee80211_sta_join_ibss(sdata, bss);
ieee80211_rx_bss_put(local, bss);
return;
- } else if (bss)
- ieee80211_rx_bss_put(local, bss);
+ }
#ifdef CONFIG_MAC80211_IBSS_DEBUG
printk(KERN_DEBUG " did not try to join ibss\n");
--
1.5.6.3
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