ieee80211: add IEEE80211_COUNTRY_STRING_LEN definition

and make use of it in wireless drivers
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/at76c50x-usb.h

@@ -290,7 +290,7 @@ struct mib_mac_mgmt {
 	u8 res;
 	u8 multi_domain_capability_implemented;
 	u8 multi_domain_capability_enabled;
-	u8 country_string[3];
+	u8 country_string[IEEE80211_COUNTRY_STRING_LEN];
 	u8 reserved[3];
 } __packed;
 

drivers/net/wireless/ipw2x00/ipw2200.h

@@ -961,7 +961,7 @@ struct ipw_country_channel_info {
 struct ipw_country_info {
 	u8 id;
 	u8 length;
-	u8 country_str[3];
+	u8 country_str[IEEE80211_COUNTRY_STRING_LEN];
 	struct ipw_country_channel_info groups[7];
 } __packed;
 

drivers/net/wireless/libertas/host.h

@@ -387,7 +387,7 @@ struct lbs_offset_value {
 struct mrvl_ie_domain_param_set {
 	struct mrvl_ie_header header;
 
-	u8 country_code[3];
+	u8 country_code[IEEE80211_COUNTRY_STRING_LEN];
 	struct ieee80211_country_ie_triplet triplet[MAX_11D_TRIPLETS];
 } __packed;
 

drivers/net/wireless/wl1251/wl12xx_80211.h

@@ -54,7 +54,6 @@
 
 /* This really should be 8, but not for our firmware */
 #define MAX_SUPPORTED_RATES 32
-#define COUNTRY_STRING_LEN 3
 #define MAX_COUNTRY_TRIPLETS 32
 
 /* Headers */
@@ -98,7 +97,7 @@ struct country_triplet {
 
 struct wl12xx_ie_country {
 	struct wl12xx_ie_header header;
-	u8 country_string[COUNTRY_STRING_LEN];
+	u8 country_string[IEEE80211_COUNTRY_STRING_LEN];
 	struct country_triplet triplets[MAX_COUNTRY_TRIPLETS];
 } __packed;
 

drivers/net/wireless/wl12xx/wl12xx_80211.h

@@ -55,7 +55,6 @@
 
 /* This really should be 8, but not for our firmware */
 #define MAX_SUPPORTED_RATES 32
-#define COUNTRY_STRING_LEN 3
 #define MAX_COUNTRY_TRIPLETS 32
 
 /* Headers */
@@ -99,7 +98,7 @@ struct country_triplet {
 
 struct wl12xx_ie_country {
 	struct wl12xx_ie_header header;
-	u8 country_string[COUNTRY_STRING_LEN];
+	u8 country_string[IEEE80211_COUNTRY_STRING_LEN];
 	struct country_triplet triplets[MAX_COUNTRY_TRIPLETS];
 } __packed;
 

include/linux/ieee80211.h

@@ -1325,6 +1325,9 @@ enum {
 /* Although the spec says 8 I'm seeing 6 in practice */
 #define IEEE80211_COUNTRY_IE_MIN_LEN	6
 
+/* The Country String field of the element shall be 3 octets in length */
+#define IEEE80211_COUNTRY_STRING_LEN	3
+
 /*
  * For regulatory extension stuff see IEEE 802.11-2007
  * Annex I (page 1141) and Annex J (page 1147). Also