wireless: move mesh config length constant

This is a constant from the 802.11 specification.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/linux/ieee80211.h

@@ -97,7 +97,10 @@
 #define IEEE80211_MAX_FRAME_LEN		2352
 
 #define IEEE80211_MAX_SSID_LEN		32
+
 #define IEEE80211_MAX_MESH_ID_LEN	32
+#define IEEE80211_MESH_CONFIG_LEN	19
+
 #define IEEE80211_QOS_CTL_LEN		2
 #define IEEE80211_QOS_CTL_TID_MASK	0x000F
 #define IEEE80211_QOS_CTL_TAG1D_MASK	0x0007

net/mac80211/mesh.c

@@ -238,7 +238,7 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
 
 	pos = skb_put(skb, 21);
 	*pos++ = WLAN_EID_MESH_CONFIG;
-	*pos++ = MESH_CFG_LEN;
+	*pos++ = IEEE80211_MESH_CONFIG_LEN;
 	/* Version */
 	*pos++ = 1;
 

net/mac80211/mesh.h

@@ -145,9 +145,6 @@ struct mesh_rmc {
 };
 
 
-/* Mesh IEs constants */
-#define MESH_CFG_LEN		19
-
 /*
  * MESH_CFG_COMP_LEN Includes:
  * 	- Active path selection protocol ID.
@@ -157,7 +154,7 @@ struct mesh_rmc {
  * Does not include mesh capabilities, which may vary across nodes in the same
  * mesh
  */
-#define MESH_CFG_CMP_LEN 	17
+#define MESH_CFG_CMP_LEN 	(IEEE80211_MESH_CONFIG_LEN - 2)
 
 /* Default values, timeouts in ms */
 #define MESH_TTL 		5

net/mac80211/scan.c

@@ -159,7 +159,7 @@ ieee80211_rx_mesh_bss_add(struct ieee80211_local *local, u8 *mesh_id, int mesh_i
 {
 	struct ieee80211_bss *bss;
 
-	if (mesh_config_len != MESH_CFG_LEN)
+	if (mesh_config_len != IEEE80211_MESH_CONFIG_LEN)
 		return NULL;
 
 	bss = kzalloc(sizeof(*bss), GFP_ATOMIC);