[MAC80211]: remove ALG_NONE

This "algorithm" is used only internally and is not useful.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Michael Buesch <mb@bu3sch.de>
Acked-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/b43/main.c

@@ -2827,9 +2827,6 @@ static int b43_dev_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	if (!dev)
 		return -ENODEV;
 	switch (key->alg) {
-	case ALG_NONE:
-		algorithm = B43_SEC_ALGO_NONE;
-		break;
 	case ALG_WEP:
 		if (key->keylen == 5)
 			algorithm = B43_SEC_ALGO_WEP40;

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -2579,10 +2579,6 @@ static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
 			     "with key %d\n", ctl->key_idx);
 		break;
 
-	case ALG_NONE:
-		IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
-		break;
-
 	default:
 		printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
 		break;

drivers/net/wireless/iwlwifi/iwl4965-base.c

@@ -2663,10 +2663,6 @@ static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
 			     "with key %d\n", ctl->key_idx);
 		break;
 
-	case ALG_NONE:
-		IWL_DEBUG_TX("Tx packet in the clear (encrypt requested).\n");
-		break;
-
 	default:
 		printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
 		break;

include/net/mac80211.h

@@ -541,13 +541,11 @@ struct ieee80211_if_conf {
 
 /**
  * enum ieee80211_key_alg - key algorithm
- * @ALG_NONE: Unset key algorithm, will never be passed to the driver
  * @ALG_WEP: WEP40 or WEP104
  * @ALG_TKIP: TKIP
  * @ALG_CCMP: CCMP (AES)
  */
 enum ieee80211_key_alg {
-	ALG_NONE,
 	ALG_WEP,
 	ALG_TKIP,
 	ALG_CCMP,

net/mac80211/ieee80211_ioctl.c

@@ -27,8 +27,9 @@
 
 
 static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
-				    int idx, int alg, int set_tx_key,
-				    const u8 *_key, size_t key_len)
+				    int idx, int alg, int remove,
+				    int set_tx_key, const u8 *_key,
+				    size_t key_len)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	int ret = 0;
@@ -75,7 +76,7 @@ static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
 		key = sta->key;
 	}
 
-	if (alg == ALG_NONE) {
+	if (remove) {
 		ieee80211_key_free(key);
 		key = NULL;
 	} else {
@@ -827,6 +828,7 @@ static int ieee80211_ioctl_siwencode(struct net_device *dev,
 	struct ieee80211_sub_if_data *sdata;
 	int idx, i, alg = ALG_WEP;
 	u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+	int remove = 0;
 
 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
@@ -845,7 +847,7 @@ static int ieee80211_ioctl_siwencode(struct net_device *dev,
 		idx--;
 
 	if (erq->flags & IW_ENCODE_DISABLED)
-		alg = ALG_NONE;
+		remove = 1;
 	else if (erq->length == 0) {
 		/* No key data - just set the default TX key index */
 		ieee80211_set_default_key(sdata, idx);
@@ -854,7 +856,7 @@ static int ieee80211_ioctl_siwencode(struct net_device *dev,
 
 	return ieee80211_set_encryption(
 		dev, bcaddr,
-		idx, alg,
+		idx, alg, remove,
 		!sdata->default_key,
 		keybuf, erq->length);
 }
@@ -1005,11 +1007,11 @@ static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
-	int alg, idx, i;
+	int uninitialized_var(alg), idx, i, remove = 0;
 
 	switch (ext->alg) {
 	case IW_ENCODE_ALG_NONE:
-		alg = ALG_NONE;
+		remove = 1;
 		break;
 	case IW_ENCODE_ALG_WEP:
 		alg = ALG_WEP;
@@ -1025,7 +1027,7 @@ static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
 	}
 
 	if (erq->flags & IW_ENCODE_DISABLED)
-		alg = ALG_NONE;
+		remove = 1;
 
 	idx = erq->flags & IW_ENCODE_INDEX;
 	if (idx < 1 || idx > 4) {
@@ -1044,6 +1046,7 @@ static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
 		idx--;
 
 	return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
+					remove,
 					ext->ext_flags &
 					IW_ENCODE_EXT_SET_TX_KEY,
 					ext->key, ext->key_len);

net/mac80211/key.c

@@ -121,7 +121,6 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_key *key;
 
 	BUG_ON(idx < 0 || idx >= NUM_DEFAULT_KEYS);
-	BUG_ON(alg == ALG_NONE);
 
 	key = kzalloc(sizeof(struct ieee80211_key) + key_len, GFP_KERNEL);
 	if (!key)

net/mac80211/rx.c

@@ -532,9 +532,6 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx)
 		return ieee80211_crypto_tkip_decrypt(rx);
 	case ALG_CCMP:
 		return ieee80211_crypto_ccmp_decrypt(rx);
-	case ALG_NONE:
-		WARN_ON(1);
-		return TXRX_CONTINUE;
 	}
 
 	/* not reached */

net/mac80211/tx.c

@@ -554,8 +554,6 @@ ieee80211_tx_h_encrypt(struct ieee80211_txrx_data *tx)
 		return ieee80211_crypto_tkip_encrypt(tx);
 	case ALG_CCMP:
 		return ieee80211_crypto_ccmp_encrypt(tx);
-	case ALG_NONE:
-		return TXRX_CONTINUE;
 	}
 
 	/* not reached */