cfg80211: Set WEP ciphers

With iwconfig there is no way to properly set the ciphers when trying to
connect to a WEP SSID. Although mac80211 based drivers dont need it, several
fullmac drivers do.
This patch basically sets the WEP ciphers whenever they're not set at all.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

net/wireless/sme.c

@@ -658,14 +658,28 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
 
 	if (connkeys && connkeys->def >= 0) {
 		int idx;
+		u32 cipher;
 
 		idx = connkeys->def;
+		cipher = connkeys->params[idx].cipher;
 		/* If given a WEP key we may need it for shared key auth */
-		if (connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP40 ||
-		    connkeys->params[idx].cipher == WLAN_CIPHER_SUITE_WEP104) {
+		if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
+		    cipher == WLAN_CIPHER_SUITE_WEP104) {
 			connect->key_idx = idx;
 			connect->key = connkeys->params[idx].key;
 			connect->key_len = connkeys->params[idx].key_len;
+
+			/*
+			 * If ciphers are not set (e.g. when going through
+			 * iwconfig), we have to set them appropriately here.
+			 */
+			if (connect->crypto.cipher_group == 0)
+				connect->crypto.cipher_group = cipher;
+
+			if (connect->crypto.n_ciphers_pairwise == 0) {
+				connect->crypto.n_ciphers_pairwise = 1;
+				connect->crypto.ciphers_pairwise[0] = cipher;
+			}
 		}
 	}