mac80211: remove BSS from cfg80211 list when leaving IBSS

Remove BSS from cfg80211 BSS list if we are only member in IBSS when
leaving it.

Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 93481eb51d24..d4e84b22a66d 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -917,6 +917,31 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 {
         struct sk_buff *skb;
+        struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+        struct ieee80211_local *local = sdata->local;
+        struct cfg80211_bss *cbss;
+        u16 capability;
+        int active_ibss = 0;
+
+        active_ibss = ieee80211_sta_active_ibss(sdata);
+
+        if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) {
+                capability = WLAN_CAPABILITY_IBSS;
+
+                if (ifibss->privacy)
+                        capability |= WLAN_CAPABILITY_PRIVACY;
+
+                cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel,
+                                        ifibss->bssid, ifibss->ssid,
+                                        ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
+                                        WLAN_CAPABILITY_PRIVACY,
+                                        capability);
+
+                if (cbss) {
+                        cfg80211_unlink_bss(local->hw.wiphy, cbss);
+                        cfg80211_put_bss(cbss);
+                }
+        }
 
         del_timer_sync(&sdata->u.ibss.timer);
         clear_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request);