mac80211: insert mesh peer after init

Drivers need the station rate info when inserting a new sta_info. The
patch "mac80211: refactor mesh peer initialization" wrongly assumed the
rate info could be applied after insertion. After further review, this
is clearly not the case.

This fixes a regression where HT parameters were not applied before
inserting the sta_info, causing performance degradation.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/mesh_plink.c

@@ -102,9 +102,6 @@ static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
 
 	set_sta_flag(sta, WLAN_STA_WME);
 
-	if (sta_info_insert(sta))
-		return NULL;
-
 	return sta;
 }
 
@@ -281,6 +278,7 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_supported_band *sband;
 	u32 rates, basic_rates = 0;
 	struct sta_info *sta;
+	bool insert = false;
 
 	sband = local->hw.wiphy->bands[band];
 	rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates);
@@ -290,6 +288,7 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
 		sta = mesh_plink_alloc(sdata, addr);
 		if (!sta)
 			return NULL;
+		insert = true;
 	}
 
 	spin_lock_bh(&sta->lock);
@@ -306,6 +305,9 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
 	rate_control_rate_init(sta);
 	spin_unlock_bh(&sta->lock);
 
+	if (insert && sta_info_insert(sta))
+		return NULL;
+
 	return sta;
 }