mac80211: refactor mesh peer rate handling

To avoid passing supp_rates and basic_rates around all the time, just
derive these when needed in mesh_matches_local() and mesh_peer_init().

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 133c1185..598a96a 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -64,18 +64,18 @@
 /**
  * mesh_matches_local - check if the config of a mesh point matches ours
  *
- * @ie: information elements of a management frame from the mesh peer
  * @sdata: local mesh subif
- * @basic_rates: BSSBasicRateSet of the peer candidate
+ * @ie: information elements of a management frame from the mesh peer
  *
  * This function checks if the mesh configuration of a mesh point matches the
  * local mesh configuration, i.e. if both nodes belong to the same mesh network.
  */
-bool mesh_matches_local(struct ieee802_11_elems *ie,
-			struct ieee80211_sub_if_data *sdata, u32 basic_rates)
+bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
+			struct ieee802_11_elems *ie)
 {
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct ieee80211_local *local = sdata->local;
+	u32 basic_rates = 0;
 
 	/*
 	 * As support for each feature is added, check for matching
@@ -96,6 +96,9 @@
 	     (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth)))
 		goto mismatch;
 
+	ieee80211_sta_get_rates(local, ie, local->oper_channel->band,
+				&basic_rates);
+
 	if (sdata->vif.bss_conf.basic_rates != basic_rates)
 		goto mismatch;
 
@@ -630,7 +633,6 @@
 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct ieee802_11_elems elems;
 	struct ieee80211_channel *channel;
-	u32 supp_rates = 0, basic_rates = 0;
 	size_t baselen;
 	int freq;
 	enum ieee80211_band band = rx_status->band;
@@ -661,12 +663,9 @@
 	if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
 		return;
 
-	supp_rates = ieee80211_sta_get_rates(local, &elems,
-					     band, &basic_rates);
-
 	if (elems.mesh_id && elems.mesh_config &&
-	    mesh_matches_local(&elems, sdata, basic_rates))
-		mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems);
+	    mesh_matches_local(sdata, &elems))
+		mesh_neighbour_update(sdata, mgmt->sa, &elems);
 
 	if (ifmsh->sync_ops)
 		ifmsh->sync_ops->rx_bcn_presp(sdata,