mac80211: proper bss private data handling

cfg80211 offers private data for each BSS struct,
which mac80211 uses. However, mac80211 uses internal
and external (cfg80211) BSS pointers interchangeably
and has a hack to put the cfg80211 bss struct into
the private struct.

Remove this hack, properly converting between the
pointers wherever necessary.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/ieee80211_i.h

@@ -71,9 +71,6 @@ struct ieee80211_fragment_entry {
 
 
 struct ieee80211_bss {
-	/* Yes, this is a hack */
-	struct cfg80211_bss cbss;
-
 	/* don't want to look up all the time */
 	size_t ssid_len;
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
@@ -274,7 +271,7 @@ struct ieee80211_work {
 			bool privacy;
 		} probe_auth;
 		struct {
-			struct ieee80211_bss *bss;
+			struct cfg80211_bss *bss;
 			const u8 *supp_rates;
 			const u8 *ht_information_ie;
 			enum ieee80211_smps_mode smps;
@@ -317,7 +314,7 @@ struct ieee80211_if_managed {
 	int probe_send_count;
 
 	struct mutex mtx;
-	struct ieee80211_bss *associated;
+	struct cfg80211_bss *associated;
 
 	u8 bssid[ETH_ALEN];