rt2x00: Add support for CTS protection in rt2x00lib

Inform drivers about the changed CTS protection settings.
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2x00.h

@@ -434,6 +434,7 @@ struct rt2x00lib_conf {
  */
 struct rt2x00lib_erp {
 	int short_preamble;
+	int cts_protection;
 
 	int ack_timeout;
 	int ack_consume_time;

drivers/net/wireless/rt2x00/rt2x00config.c

@@ -84,6 +84,8 @@ void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
 	memset(&erp, 0, sizeof(erp));
 
 	erp.short_preamble = bss_conf->use_short_preamble;
+	erp.cts_protection = bss_conf->use_cts_prot;
+
 	erp.ack_timeout = PLCP + get_duration(ACK_SIZE, 10);
 	erp.ack_consume_time = SIFS + PLCP + get_duration(ACK_SIZE, 10);
 

drivers/net/wireless/rt2x00/rt2x00mac.c

@@ -511,7 +511,7 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
 	 * When the erp information has changed, we should perform
 	 * additional configuration steps. For all other changes we are done.
 	 */
-	if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+	if (changes & (BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_ERP_CTS_PROT)) {
 		if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags))
 			rt2x00lib_config_erp(rt2x00dev, intf, bss_conf);
 		else