cfg80211: rework key operation

This reworks the key operation in cfg80211, and now only
allows, from userspace, configuring keys (via nl80211)
after the connection has been established (in managed
mode), the IBSS been joined (in IBSS mode), at any time
(in AP[_VLAN] modes) or never for all the other modes.

In order to do shared key authentication correctly, it
is now possible to give a WEP key to the AUTH command.
To configure static WEP keys, these are given to the
CONNECT or IBSS_JOIN command directly, for a userspace
SME it is assumed it will configure it properly after
the connection has been established.

Since mac80211 used to check the default key in IBSS
mode to see whether or not the network is protected,
it needs an update in that area, as well as an update
to make use of the WEP key passed to auth() for shared
key authentication.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

include/linux/nl80211.h

@@ -569,6 +569,9 @@ enum nl80211_commands {
  *
  * @NL80211_ATTR_KEY: key information in a nested attribute with
  *	%NL80211_KEY_* sub-attributes
+ * @NL80211_ATTR_KEYS: array of keys for static WEP keys for connect()
+ *	and join_ibss(), key information is in a nested attribute each
+ *	with %NL80211_KEY_* sub-attributes
  *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -696,6 +699,7 @@ enum nl80211_attrs {
 	NL80211_ATTR_PREV_BSSID,
 
 	NL80211_ATTR_KEY,
+	NL80211_ATTR_KEYS,
 
 	/* add attributes here, update the policy in nl80211.c */
 
@@ -726,6 +730,7 @@ enum nl80211_attrs {
 #define NL80211_ATTR_WPA_VERSIONS NL80211_ATTR_WPA_VERSIONS
 #define NL80211_ATTR_AKM_SUITES NL80211_ATTR_AKM_SUITES
 #define NL80211_ATTR_KEY NL80211_ATTR_KEY
+#define NL80211_ATTR_KEYS NL80211_ATTR_KEYS
 
 #define NL80211_MAX_SUPP_RATES			32
 #define NL80211_MAX_SUPP_REG_RULES		32

include/net/cfg80211.h

@@ -647,12 +647,17 @@ struct cfg80211_crypto_settings {
  * @auth_type: Authentication type (algorithm)
  * @ie: Extra IEs to add to Authentication frame or %NULL
  * @ie_len: Length of ie buffer in octets
+ * @key_len: length of WEP key for shared key authentication
+ * @key_idx: index of WEP key for shared key authentication
+ * @key: WEP key for shared key authentication
  */
 struct cfg80211_auth_request {
 	struct cfg80211_bss *bss;
 	const u8 *ie;
 	size_t ie_len;
 	enum nl80211_auth_type auth_type;
+	const u8 *key;
+	u8 key_len, key_idx;
 };
 
 /**
@@ -727,6 +732,8 @@ struct cfg80211_disassoc_request {
  * @ie: information element(s) to include in the beacon
  * @ie_len: length of that
  * @beacon_interval: beacon interval to use
+ * @privacy: this is a protected network, keys will be configured
+ *	after joining
  */
 struct cfg80211_ibss_params {
 	u8 *ssid;
@@ -736,6 +743,7 @@ struct cfg80211_ibss_params {
 	u8 ssid_len, ie_len;
 	u16 beacon_interval;
 	bool channel_fixed;
+	bool privacy;
 };
 
 /**
@@ -755,6 +763,9 @@ struct cfg80211_ibss_params {
  * @assoc_ie_len: Length of assoc_ie in octets
  * @privacy: indicates whether privacy-enabled APs should be used
  * @crypto: crypto settings
+ * @key_len: length of WEP key for shared key authentication
+ * @key_idx: index of WEP key for shared key authentication
+ * @key: WEP key for shared key authentication
  */
 struct cfg80211_connect_params {
 	struct ieee80211_channel *channel;
@@ -766,6 +777,8 @@ struct cfg80211_connect_params {
 	size_t ie_len;
 	bool privacy;
 	struct cfg80211_crypto_settings crypto;
+	const u8 *key;
+	u8 key_len, key_idx;
 };
 
 /**
@@ -1223,9 +1236,10 @@ extern void wiphy_unregister(struct wiphy *wiphy);
  */
 extern void wiphy_free(struct wiphy *wiphy);
 
-/* internal struct */
+/* internal structs */
 struct cfg80211_conn;
 struct cfg80211_internal_bss;
+struct cfg80211_cached_keys;
 
 #define MAX_AUTH_BSSES		4
 
@@ -1267,6 +1281,7 @@ struct wireless_dev {
 		CFG80211_SME_CONNECTED,
 	} sme_state;
 	struct cfg80211_conn *conn;
+	struct cfg80211_cached_keys *connect_keys;
 
 	struct list_head event_list;
 	spinlock_t event_lock;
@@ -1280,6 +1295,7 @@ struct wireless_dev {
 	struct {
 		struct cfg80211_ibss_params ibss;
 		struct cfg80211_connect_params connect;
+		struct cfg80211_cached_keys *keys;
 		u8 *ie;
 		size_t ie_len;
 		u8 bssid[ETH_ALEN];

net/mac80211/ibss.c

@@ -57,7 +57,7 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
 	 */
 	if (auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1)
 		ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0,
-				    sdata->u.ibss.bssid, 0);
+				    sdata->u.ibss.bssid, NULL, 0, 0);
 }
 
 static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
@@ -494,7 +494,7 @@ static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
 
 	capability = WLAN_CAPABILITY_IBSS;
 
-	if (sdata->default_key)
+	if (ifibss->privacy)
 		capability |= WLAN_CAPABILITY_PRIVACY;
 	else
 		sdata->drop_unencrypted = 0;
@@ -524,9 +524,8 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 		return;
 
 	capability = WLAN_CAPABILITY_IBSS;
-	if (sdata->default_key)
+	if (ifibss->privacy)
 		capability |= WLAN_CAPABILITY_PRIVACY;
-
 	if (ifibss->fixed_bssid)
 		bssid = ifibss->bssid;
 	if (ifibss->fixed_channel)
@@ -872,6 +871,8 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 	} else
 		sdata->u.ibss.fixed_bssid = false;
 
+	sdata->u.ibss.privacy = params->privacy;
+
 	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 
 	sdata->u.ibss.channel = params->channel;

net/mac80211/ieee80211_i.h

@@ -247,6 +247,9 @@ struct ieee80211_mgd_work {
 
 	int tries;
 
+	u8 key[WLAN_KEY_LEN_WEP104];
+	u8 key_len, key_idx;
+
 	/* must be last */
 	u8 ie[0]; /* for auth or assoc frame, not probe */
 };
@@ -321,6 +324,7 @@ struct ieee80211_if_ibss {
 
 	bool fixed_bssid;
 	bool fixed_channel;
+	bool privacy;
 
 	u8 bssid[ETH_ALEN];
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
@@ -1093,8 +1097,8 @@ int ieee80211_add_pending_skbs(struct ieee80211_local *local,
 
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 			 u16 transaction, u16 auth_alg,
-			 u8 *extra, size_t extra_len,
-			 const u8 *bssid, int encrypt);
+			 u8 *extra, size_t extra_len, const u8 *bssid,
+			 const u8 *key, u8 key_len, u8 key_idx);
 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 			     const u8 *ie, size_t ie_len);
 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,

net/mac80211/mlme.c

@@ -954,7 +954,7 @@ ieee80211_authenticate(struct ieee80211_sub_if_data *sdata,
 	       sdata->dev->name, wk->bss->cbss.bssid, wk->tries);
 
 	ieee80211_send_auth(sdata, 1, wk->auth_alg, wk->ie, wk->ie_len,
-			    wk->bss->cbss.bssid, 0);
+			    wk->bss->cbss.bssid, NULL, 0, 0);
 	wk->auth_transaction = 2;
 
 	wk->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
@@ -1176,7 +1176,8 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
 		return;
 	ieee80211_send_auth(sdata, 3, wk->auth_alg,
 			    elems.challenge - 2, elems.challenge_len + 2,
-			    wk->bss->cbss.bssid, 1);
+			    wk->bss->cbss.bssid,
+			    wk->key, wk->key_len, wk->key_idx);
 	wk->auth_transaction = 4;
 }
 
@@ -2175,6 +2176,12 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 		wk->ie_len = req->ie_len;
 	}
 
+	if (req->key && req->key_len) {
+		wk->key_len = req->key_len;
+		wk->key_idx = req->key_idx;
+		memcpy(wk->key, req->key, req->key_len);
+	}
+
 	ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
 	memcpy(wk->ssid, ssid + 2, ssid[1]);
 	wk->ssid_len = ssid[1];

net/mac80211/util.c

@@ -31,6 +31,7 @@
 #include "mesh.h"
 #include "wme.h"
 #include "led.h"
+#include "wep.h"
 
 /* privid for wiphys to determine whether they belong to us or not */
 void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
@@ -804,12 +805,13 @@ u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
 
 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 			 u16 transaction, u16 auth_alg,
-			 u8 *extra, size_t extra_len,
-			 const u8 *bssid, int encrypt)
+			 u8 *extra, size_t extra_len, const u8 *bssid,
+			 const u8 *key, u8 key_len, u8 key_idx)
 {
 	struct ieee80211_local *local = sdata->local;
 	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
+	int err;
 
 	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
 			    sizeof(*mgmt) + 6 + extra_len);
@@ -824,8 +826,6 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 	memset(mgmt, 0, 24 + 6);
 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 					  IEEE80211_STYPE_AUTH);
-	if (encrypt)
-		mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
 	memcpy(mgmt->da, bssid, ETH_ALEN);
 	memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
 	memcpy(mgmt->bssid, bssid, ETH_ALEN);
@@ -835,7 +835,13 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
 	if (extra)
 		memcpy(skb_put(skb, extra_len), extra, extra_len);
 
-	ieee80211_tx_skb(sdata, skb, encrypt);
+	if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
+		mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+		err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
+		WARN_ON(err);
+	}
+
+	ieee80211_tx_skb(sdata, skb, 0);
 }
 
 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,

net/mac80211/wep.c

@@ -144,7 +144,7 @@ void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
  *
  * WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
  */
-static int ieee80211_wep_encrypt(struct ieee80211_local *local,
+int ieee80211_wep_encrypt(struct ieee80211_local *local,
 			  struct sk_buff *skb,
 			  const u8 *key, int keylen, int keyidx)
 {

net/mac80211/wep.h

@@ -20,6 +20,9 @@ int ieee80211_wep_init(struct ieee80211_local *local);
 void ieee80211_wep_free(struct ieee80211_local *local);
 void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
 				size_t klen, u8 *data, size_t data_len);
+int ieee80211_wep_encrypt(struct ieee80211_local *local,
+			  struct sk_buff *skb,
+			  const u8 *key, int keylen, int keyidx);
 int ieee80211_wep_decrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
 			       size_t klen, u8 *data, size_t data_len);
 bool ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key);

net/wireless/core.c

@@ -666,14 +666,10 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
 		wdev_lock(wdev);
 		switch (wdev->iftype) {
 		case NL80211_IFTYPE_ADHOC:
-			if (wdev->wext.ibss.ssid_len)
-				__cfg80211_join_ibss(rdev, dev,
-						     &wdev->wext.ibss);
+			cfg80211_ibss_wext_join(rdev, wdev);
 			break;
 		case NL80211_IFTYPE_STATION:
-			if (wdev->wext.connect.ssid_len)
-				__cfg80211_connect(rdev, dev,
-						   &wdev->wext.connect);
+			cfg80211_mgd_wext_connect(rdev, wdev);
 			break;
 		default:
 			break;
@@ -690,6 +686,9 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
 		}
 		mutex_unlock(&rdev->devlist_mtx);
 		mutex_destroy(&wdev->mtx);
+#ifdef CONFIG_WIRELESS_EXT
+		kfree(wdev->wext.keys);
+#endif
 		break;
 	case NETDEV_PRE_UP:
 		if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)))

net/wireless/core.h

@@ -238,6 +238,12 @@ struct cfg80211_event {
 	};
 };
 
+struct cfg80211_cached_keys {
+	struct key_params params[6];
+	u8 data[6][WLAN_MAX_KEY_LEN];
+	int def, defmgmt;
+};
+
 
 /* free object */
 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
@@ -256,14 +262,18 @@ void cfg80211_bss_age(struct cfg80211_registered_device *dev,
 /* IBSS */
 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 			 struct net_device *dev,
-			 struct cfg80211_ibss_params *params);
+			 struct cfg80211_ibss_params *params,
+			 struct cfg80211_cached_keys *connkeys);
 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev,
-		       struct cfg80211_ibss_params *params);
+		       struct cfg80211_ibss_params *params,
+		       struct cfg80211_cached_keys *connkeys);
 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
 			struct net_device *dev, bool nowext);
 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
+int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
+			    struct wireless_dev *wdev);
 
 /* MLME */
 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
@@ -272,12 +282,14 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 			 enum nl80211_auth_type auth_type,
 			 const u8 *bssid,
 			 const u8 *ssid, int ssid_len,
-			 const u8 *ie, int ie_len);
+			 const u8 *ie, int ie_len,
+			 const u8 *key, int key_len, int key_idx);
 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev, struct ieee80211_channel *chan,
 		       enum nl80211_auth_type auth_type, const u8 *bssid,
 		       const u8 *ssid, int ssid_len,
-		       const u8 *ie, int ie_len);
+		       const u8 *ie, int ie_len,
+		       const u8 *key, int key_len, int key_idx);
 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 			  struct net_device *dev,
 			  struct ieee80211_channel *chan,
@@ -310,10 +322,12 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 /* SME */
 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev,
-		       struct cfg80211_connect_params *connect);
+		       struct cfg80211_connect_params *connect,
+		       struct cfg80211_cached_keys *connkeys);
 int cfg80211_connect(struct cfg80211_registered_device *rdev,
 		     struct net_device *dev,
-		     struct cfg80211_connect_params *connect);
+		     struct cfg80211_connect_params *connect,
+		     struct cfg80211_cached_keys *connkeys);
 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
 			  struct net_device *dev, u16 reason,
 			  bool wextev);
@@ -323,11 +337,14 @@ int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
 void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
 		       const u8 *req_ie, size_t req_ie_len,
 		       const u8 *resp_ie, size_t resp_ie_len);
+int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
+			      struct wireless_dev *wdev);
 
 void cfg80211_conn_work(struct work_struct *work);
 
 /* internal helpers */
-int cfg80211_validate_key_settings(struct key_params *params, int key_idx,
+int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
+				   struct key_params *params, int key_idx,
 				   const u8 *mac_addr);
 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
 			     size_t ie_len, u16 reason, bool from_ap);
@@ -335,5 +352,6 @@ void cfg80211_sme_scan_done(struct net_device *dev);
 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
 void cfg80211_sme_disassoc(struct net_device *dev, int idx);
 void __cfg80211_scan_done(struct work_struct *wk);
+void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
 
 #endif /* __NET_WIRELESS_CORE_H */

net/wireless/ibss.c

@@ -39,6 +39,8 @@ void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid)
 	cfg80211_hold_bss(bss_from_pub(bss));
 	wdev->current_bss = bss_from_pub(bss);
 
+	cfg80211_upload_connect_keys(wdev);
+
 	nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid,
 				GFP_KERNEL);
 #ifdef CONFIG_WIRELESS_EXT
@@ -71,7 +73,8 @@ EXPORT_SYMBOL(cfg80211_ibss_joined);
 
 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 			 struct net_device *dev,
-			 struct cfg80211_ibss_params *params)
+			 struct cfg80211_ibss_params *params,
+			 struct cfg80211_cached_keys *connkeys)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	int err;
@@ -81,13 +84,18 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 	if (wdev->ssid_len)
 		return -EALREADY;
 
+	if (WARN_ON(wdev->connect_keys))
+		kfree(wdev->connect_keys);
+	wdev->connect_keys = connkeys;
+
 #ifdef CONFIG_WIRELESS_EXT
 	wdev->wext.ibss.channel = params->channel;
 #endif
 	err = rdev->ops->join_ibss(&rdev->wiphy, dev, params);
-
-	if (err)
+	if (err) {
+		wdev->connect_keys = NULL;
 		return err;
+	}
 
 	memcpy(wdev->ssid, params->ssid, params->ssid_len);
 	wdev->ssid_len = params->ssid_len;
@@ -97,13 +105,14 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 
 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev,
-		       struct cfg80211_ibss_params *params)
+		       struct cfg80211_ibss_params *params,
+		       struct cfg80211_cached_keys *connkeys)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	int err;
 
 	wdev_lock(wdev);
-	err = __cfg80211_join_ibss(rdev, dev, params);
+	err = __cfg80211_join_ibss(rdev, dev, params, connkeys);
 	wdev_unlock(wdev);
 
 	return err;
@@ -112,9 +121,22 @@ int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
 static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+	int i;
 
 	ASSERT_WDEV_LOCK(wdev);
 
+	kfree(wdev->connect_keys);
+	wdev->connect_keys = NULL;
+
+	/*
+	 * Delete all the keys ... pairwise keys can't really
+	 * exist any more anyway, but default keys might.
+	 */
+	if (rdev->ops->del_key)
+		for (i = 0; i < 6; i++)
+			rdev->ops->del_key(wdev->wiphy, dev, i, NULL);
+
 	if (wdev->current_bss) {
 		cfg80211_unhold_bss(wdev->current_bss);
 		cfg80211_put_bss(&wdev->current_bss->pub);
@@ -172,11 +194,14 @@ int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
 }
 
 #ifdef CONFIG_WIRELESS_EXT
-static int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
+int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
 			    struct wireless_dev *wdev)
 {
+	struct cfg80211_cached_keys *ck = NULL;
 	enum ieee80211_band band;
-	int i;
+	int i, err;
+
+	ASSERT_WDEV_LOCK(wdev);
 
 	if (!wdev->wext.ibss.beacon_interval)
 		wdev->wext.ibss.beacon_interval = 100;
@@ -216,8 +241,24 @@ static int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
 	if (!netif_running(wdev->netdev))
 		return 0;
 
-	return cfg80211_join_ibss(wiphy_to_dev(wdev->wiphy),
-				  wdev->netdev, &wdev->wext.ibss);
+	if (wdev->wext.keys)
+		wdev->wext.keys->def = wdev->wext.default_key;
+
+	wdev->wext.ibss.privacy = wdev->wext.default_key != -1;
+
+	if (wdev->wext.keys) {
+		ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
+		if (!ck)
+			return -ENOMEM;
+		for (i = 0; i < 6; i++)
+			ck->params[i].key = ck->data[i];
+	}
+	err = __cfg80211_join_ibss(rdev, wdev->netdev,
+				   &wdev->wext.ibss, ck);
+	if (err)
+		kfree(ck);
+
+	return err;
 }
 
 int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
@@ -265,7 +306,11 @@ int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
 		wdev->wext.ibss.channel_fixed = false;
 	}
 
-	return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev);
+	wdev_lock(wdev);
+	err = cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev);
+	wdev_unlock(wdev);
+
+	return err;
 }
 /* temporary symbol - mark GPL - in the future the handler won't be */
 EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwfreq);
@@ -333,7 +378,11 @@ int cfg80211_ibss_wext_siwessid(struct net_device *dev,
 	memcpy(wdev->wext.ibss.ssid, ssid, len);
 	wdev->wext.ibss.ssid_len = len;
 
-	return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev);
+	wdev_lock(wdev);
+	err = cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev);
+	wdev_unlock(wdev);
+
+	return err;
 }
 /* temporary symbol - mark GPL - in the future the handler won't be */
 EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwessid);
@@ -414,7 +463,11 @@ int cfg80211_ibss_wext_siwap(struct net_device *dev,
 	} else
 		wdev->wext.ibss.bssid = NULL;
 
-	return cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev);
+	wdev_lock(wdev);
+	err = cfg80211_ibss_wext_join(wiphy_to_dev(wdev->wiphy), wdev);
+	wdev_unlock(wdev);
+
+	return err;
 }
 /* temporary symbol - mark GPL - in the future the handler won't be */
 EXPORT_SYMBOL_GPL(cfg80211_ibss_wext_siwap);

net/wireless/mlme.c

@@ -328,7 +328,8 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 			 enum nl80211_auth_type auth_type,
 			 const u8 *bssid,
 			 const u8 *ssid, int ssid_len,
-			 const u8 *ie, int ie_len)
+			 const u8 *ie, int ie_len,
+			 const u8 *key, int key_len, int key_idx)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_auth_request req;
@@ -337,6 +338,10 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 
 	ASSERT_WDEV_LOCK(wdev);
 
+	if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
+		if (!key || !key_len || key_idx < 0 || key_idx > 4)
+			return -EINVAL;
+
 	if (wdev->current_bss &&
 	    memcmp(bssid, wdev->current_bss->pub.bssid, ETH_ALEN) == 0)
 		return -EALREADY;
@@ -359,6 +364,9 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 	req.auth_type = auth_type;
 	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
 				   WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
+	req.key = key;
+	req.key_len = key_len;
+	req.key_idx = key_idx;
 	if (!req.bss)
 		return -ENOENT;
 
@@ -396,13 +404,15 @@ int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev, struct ieee80211_channel *chan,
 		       enum nl80211_auth_type auth_type, const u8 *bssid,
 		       const u8 *ssid, int ssid_len,
-		       const u8 *ie, int ie_len)
+		       const u8 *ie, int ie_len,
+		       const u8 *key, int key_len, int key_idx)
 {
 	int err;
 
 	wdev_lock(dev->ieee80211_ptr);
 	err = __cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
-				   ssid, ssid_len, ie, ie_len);
+				   ssid, ssid_len, ie, ie_len,
+				   key, key_len, key_idx);
 	wdev_unlock(dev->ieee80211_ptr);
 
 	return err;

net/wireless/nl80211.c

@@ -138,8 +138,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
 /* policy for the attributes */
 static struct nla_policy
 nl80211_key_policy[NL80211_KEY_MAX + 1] __read_mostly = {
-	[NL80211_KEY_DATA] = { .type = NLA_BINARY,
-				    .len = WLAN_MAX_KEY_LEN },
+	[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 	[NL80211_KEY_IDX] = { .type = NLA_U8 },
 	[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 	[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
@@ -305,6 +304,83 @@ static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 	return 0;
 }
 
+static struct cfg80211_cached_keys *
+nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
+		       struct nlattr *keys)
+{
+	struct key_parse parse;
+	struct nlattr *key;
+	struct cfg80211_cached_keys *result;
+	int rem, err, def = 0;
+
+	result = kzalloc(sizeof(*result), GFP_KERNEL);
+	if (!result)
+		return ERR_PTR(-ENOMEM);
+
+	result->def = -1;
+	result->defmgmt = -1;
+
+	nla_for_each_nested(key, keys, rem) {
+		memset(&parse, 0, sizeof(parse));
+		parse.idx = -1;
+
+		err = nl80211_parse_key_new(key, &parse);
+		if (err)
+			goto error;
+		err = -EINVAL;
+		if (!parse.p.key)
+			goto error;
+		if (parse.idx < 0 || parse.idx > 4)
+			goto error;
+		if (parse.def) {
+			if (def)
+				goto error;
+			def = 1;
+			result->def = parse.idx;
+		} else if (parse.defmgmt)
+			goto error;
+		err = cfg80211_validate_key_settings(rdev, &parse.p,
+						     parse.idx, NULL);
+		if (err)
+			goto error;
+		result->params[parse.idx].cipher = parse.p.cipher;
+		result->params[parse.idx].key_len = parse.p.key_len;
+		result->params[parse.idx].key = result->data[parse.idx];
+		memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
+	}
+
+	return result;
+ error:
+	kfree(result);
+	return ERR_PTR(err);
+}
+
+static int nl80211_key_allowed(struct wireless_dev *wdev)
+{
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (!netif_running(wdev->netdev))
+		return -ENETDOWN;
+
+	switch (wdev->iftype) {
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_AP_VLAN:
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		if (!wdev->current_bss)
+			return -ENOLINK;
+		break;
+	case NL80211_IFTYPE_STATION:
+		if (wdev->sme_state != CFG80211_SME_CONNECTED)
+			return -ENOLINK;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
 			      struct cfg80211_registered_device *dev)
 {
@@ -1212,7 +1288,11 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
+	wdev_lock(dev->ieee80211_ptr);
+	err = nl80211_key_allowed(dev->ieee80211_ptr);
+	if (!err)
 		err = func(&rdev->wiphy, dev, key.idx);
+
 #ifdef CONFIG_WIRELESS_EXT
 	if (!err) {
 		if (func == rdev->ops->set_default_key)
@@ -1221,6 +1301,7 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
 			dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
 	}
 #endif
+	wdev_unlock(dev->ieee80211_ptr);
 
  out:
 	cfg80211_unlock_rdev(rdev);
@@ -1235,7 +1316,7 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg80211_registered_device *rdev;
-	int err, i;
+	int err;
 	struct net_device *dev;
 	struct key_parse key;
 	u8 *mac_addr = NULL;
@@ -1250,29 +1331,28 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
-	if (cfg80211_validate_key_settings(&key.p, key.idx, mac_addr))
-		return -EINVAL;
-
 	rtnl_lock();
 
 	err = get_rdev_dev_by_info_ifindex(info->attrs, &rdev, &dev);
 	if (err)
 		goto unlock_rtnl;
 
-	for (i = 0; i < rdev->wiphy.n_cipher_suites; i++)
-		if (key.p.cipher == rdev->wiphy.cipher_suites[i])
-			break;
-	if (i == rdev->wiphy.n_cipher_suites) {
-		err = -EINVAL;
+	if (!rdev->ops->add_key) {
+		err = -EOPNOTSUPP;
 		goto out;
 	}
 
-	if (!rdev->ops->add_key) {
-		err = -EOPNOTSUPP;
+	if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) {
+		err = -EINVAL;
 		goto out;
 	}
 
-	err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx, mac_addr, &key.p);
+	wdev_lock(dev->ieee80211_ptr);
+	err = nl80211_key_allowed(dev->ieee80211_ptr);
+	if (!err)
+		err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
+					 mac_addr, &key.p);
+	wdev_unlock(dev->ieee80211_ptr);
 
  out:
 	cfg80211_unlock_rdev(rdev);
@@ -1309,6 +1389,9 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
 		goto out;
 	}
 
+	wdev_lock(dev->ieee80211_ptr);
+	err = nl80211_key_allowed(dev->ieee80211_ptr);
+	if (!err)
 		err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx, mac_addr);
 
 #ifdef CONFIG_WIRELESS_EXT
@@ -1319,6 +1402,7 @@ static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
 			dev->ieee80211_ptr->wext.default_mgmt_key = -1;
 	}
 #endif
+	wdev_unlock(dev->ieee80211_ptr);
 
  out:
 	cfg80211_unlock_rdev(rdev);
@@ -3159,6 +3243,7 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 	const u8 *bssid, *ssid, *ie = NULL;
 	int err, ssid_len, ie_len = 0;
 	enum nl80211_auth_type auth_type;
+	struct key_parse key;
 
 	if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
 		return -EINVAL;
@@ -3175,6 +3260,25 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 	if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
 		return -EINVAL;
 
+	err = nl80211_parse_key(info, &key);
+	if (err)
+		return err;
+
+	if (key.idx >= 0) {
+		if (!key.p.key || !key.p.key_len)
+			return -EINVAL;
+		if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
+		     key.p.key_len != WLAN_KEY_LEN_WEP40) &&
+		    (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
+		     key.p.key_len != WLAN_KEY_LEN_WEP104))
+			return -EINVAL;
+		if (key.idx > 4)
+			return -EINVAL;
+	} else {
+		key.p.key_len = 0;
+		key.p.key = NULL;
+	}
+
 	rtnl_lock();
 
 	err = get_rdev_dev_by_info_ifindex(info->attrs, &rdev, &dev);
@@ -3219,7 +3323,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 	}
 
 	err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
-				 ssid, ssid_len, ie, ie_len);
+				 ssid, ssid_len, ie, ie_len,
+				 key.p.key, key.p.key_len, key.idx);
 
 out:
 	cfg80211_unlock_rdev(rdev);
@@ -3506,6 +3611,7 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
 	struct net_device *dev;
 	struct cfg80211_ibss_params ibss;
 	struct wiphy *wiphy;
+	struct cfg80211_cached_keys *connkeys = NULL;
 	int err;
 
 	memset(&ibss, 0, sizeof(ibss));
@@ -3570,13 +3676,26 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
 	}
 
 	ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
+	ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
+
+	if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
+		connkeys = nl80211_parse_connkeys(rdev,
+					info->attrs[NL80211_ATTR_KEYS]);
+		if (IS_ERR(connkeys)) {
+			err = PTR_ERR(connkeys);
+			connkeys = NULL;
+			goto out;
+		}
+	}
 
-	err = cfg80211_join_ibss(rdev, dev, &ibss);
+	err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
 
 out:
 	cfg80211_unlock_rdev(rdev);
 	dev_put(dev);
 unlock_rtnl:
+	if (err)
+		kfree(connkeys);
 	rtnl_unlock();
 	return err;
 }
@@ -3746,6 +3865,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
 	struct net_device *dev;
 	struct cfg80211_connect_params connect;
 	struct wiphy *wiphy;
+	struct cfg80211_cached_keys *connkeys = NULL;
 	int err;
 
 	memset(&connect, 0, sizeof(connect));
@@ -3810,12 +3930,24 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
 		}
 	}
 
-	err = cfg80211_connect(rdev, dev, &connect);
+	if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
+		connkeys = nl80211_parse_connkeys(rdev,
+					info->attrs[NL80211_ATTR_KEYS]);
+		if (IS_ERR(connkeys)) {
+			err = PTR_ERR(connkeys);
+			connkeys = NULL;
+			goto out;
+		}
+	}
+
+	err = cfg80211_connect(rdev, dev, &connect, connkeys);
 
 out:
 	cfg80211_unlock_rdev(rdev);
 	dev_put(dev);
 unlock_rtnl:
+	if (err)
+		kfree(connkeys);
 	rtnl_unlock();
 	return err;
 }

net/wireless/sme.c

@@ -125,7 +125,9 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
 					    params->channel, params->auth_type,
 					    params->bssid,
 					    params->ssid, params->ssid_len,
-					    NULL, 0);
+					    NULL, 0,
+					    params->key, params->key_len,
+					    params->key_idx);
 	case CFG80211_CONN_ASSOCIATE_NEXT:
 		BUG_ON(!rdev->ops->assoc);
 		wdev->conn->state = CFG80211_CONN_ASSOCIATING;
@@ -279,8 +281,12 @@ void cfg80211_sme_rx_auth(struct net_device *dev,
 		/* select automatically between only open, shared, leap */
 		switch (wdev->conn->params.auth_type) {
 		case NL80211_AUTHTYPE_OPEN_SYSTEM:
+			if (wdev->connect_keys)
 				wdev->conn->params.auth_type =
 					NL80211_AUTHTYPE_SHARED_KEY;
+			else
+				wdev->conn->params.auth_type =
+					NL80211_AUTHTYPE_NETWORK_EAP;
 			break;
 		case NL80211_AUTHTYPE_SHARED_KEY:
 			wdev->conn->params.auth_type =
@@ -353,10 +359,8 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 #endif
 
 	if (status == WLAN_STATUS_SUCCESS &&
-	    wdev->sme_state == CFG80211_SME_IDLE) {
-		wdev->sme_state = CFG80211_SME_CONNECTED;
-		return;
-	}
+	    wdev->sme_state == CFG80211_SME_IDLE)
+		goto success;
 
 	if (wdev->sme_state != CFG80211_SME_CONNECTING)
 		return;
@@ -370,7 +374,15 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 	if (wdev->conn)
 		wdev->conn->state = CFG80211_CONN_IDLE;
 
-	if (status == WLAN_STATUS_SUCCESS) {
+	if (status != WLAN_STATUS_SUCCESS) {
+		wdev->sme_state = CFG80211_SME_IDLE;
+		kfree(wdev->conn);
+		wdev->conn = NULL;
+		kfree(wdev->connect_keys);
+		wdev->connect_keys = NULL;
+		return;
+	}
+
 	bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid,
 			       wdev->ssid, wdev->ssid_len,
 			       WLAN_CAPABILITY_ESS,
@@ -382,12 +394,9 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 	cfg80211_hold_bss(bss_from_pub(bss));
 	wdev->current_bss = bss_from_pub(bss);
 
+ success:
 	wdev->sme_state = CFG80211_SME_CONNECTED;
-	} else {
-		wdev->sme_state = CFG80211_SME_IDLE;
-		kfree(wdev->conn);
-		wdev->conn = NULL;
-	}
+	cfg80211_upload_connect_keys(wdev);
 }
 
 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
@@ -516,6 +525,8 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
 			     size_t ie_len, u16 reason, bool from_ap)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+	int i;
 #ifdef CONFIG_WIRELESS_EXT
 	union iwreq_data wrqu;
 #endif
@@ -543,8 +554,15 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
 		wdev->conn = NULL;
 	}
 
-	nl80211_send_disconnected(wiphy_to_dev(wdev->wiphy), dev,
-				  reason, ie, ie_len, from_ap);
+	nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
+
+	/*
+	 * Delete all the keys ... pairwise keys can't really
+	 * exist any more anyway, but default keys might.
+	 */
+	if (rdev->ops->del_key)
+		for (i = 0; i < 6; i++)
+			rdev->ops->del_key(wdev->wiphy, dev, i, NULL);
 
 #ifdef CONFIG_WIRELESS_EXT
 	memset(&wrqu, 0, sizeof(wrqu));
@@ -580,7 +598,8 @@ EXPORT_SYMBOL(cfg80211_disconnected);
 
 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev,
-		       struct cfg80211_connect_params *connect)
+		       struct cfg80211_connect_params *connect,
+		       struct cfg80211_cached_keys *connkeys)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	int err;
@@ -590,6 +609,24 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
 	if (wdev->sme_state != CFG80211_SME_IDLE)
 		return -EALREADY;
 
+	if (WARN_ON(wdev->connect_keys)) {
+		kfree(wdev->connect_keys);
+		wdev->connect_keys = NULL;
+	}
+
+	if (connkeys && connkeys->def >= 0) {
+		int idx;
+
+		idx = connkeys->def;
+		/* 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) {
+			connect->key_idx = idx;
+			connect->key = connkeys->params[idx].key;
+			connect->key_len = connkeys->params[idx].key_len;
+		}
+	}
+
 	if (!rdev->ops->connect) {
 		if (!rdev->ops->auth || !rdev->ops->assoc)
 			return -EOPNOTSUPP;
@@ -640,6 +677,7 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
 			cfg80211_get_conn_bss(wdev);
 
 		wdev->sme_state = CFG80211_SME_CONNECTING;
+		wdev->connect_keys = connkeys;
 
 		/* we're good if we have both BSSID and channel */
 		if (wdev->conn->params.bssid && wdev->conn->params.channel) {
@@ -662,13 +700,16 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
 			kfree(wdev->conn);
 			wdev->conn = NULL;
 			wdev->sme_state = CFG80211_SME_IDLE;
+			wdev->connect_keys = NULL;
 		}
 
 		return err;
 	} else {
 		wdev->sme_state = CFG80211_SME_CONNECTING;
+		wdev->connect_keys = connkeys;
 		err = rdev->ops->connect(&rdev->wiphy, dev, connect);
 		if (err) {
+			wdev->connect_keys = NULL;
 			wdev->sme_state = CFG80211_SME_IDLE;
 			return err;
 		}
@@ -682,12 +723,13 @@ int __cfg80211_connect(struct cfg80211_registered_device *rdev,
 
 int cfg80211_connect(struct cfg80211_registered_device *rdev,
 		     struct net_device *dev,
-		     struct cfg80211_connect_params *connect)
+		     struct cfg80211_connect_params *connect,
+		     struct cfg80211_cached_keys *connkeys)
 {
 	int err;
 
 	wdev_lock(dev->ieee80211_ptr);
-	err = __cfg80211_connect(rdev, dev, connect);
+	err = __cfg80211_connect(rdev, dev, connect, connkeys);
 	wdev_unlock(dev->ieee80211_ptr);
 
 	return err;
@@ -704,6 +746,9 @@ int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
 	if (wdev->sme_state == CFG80211_SME_IDLE)
 		return -EINVAL;
 
+	kfree(wdev->connect_keys);
+	wdev->connect_keys = NULL;
+
 	if (!rdev->ops->disconnect) {
 		if (!rdev->ops->deauth)
 			return -EOPNOTSUPP;

net/wireless/util.c

@@ -141,9 +141,12 @@ void ieee80211_set_bitrate_flags(struct wiphy *wiphy)
 			set_mandatory_flags_band(wiphy->bands[band], band);
 }
 
-int cfg80211_validate_key_settings(struct key_params *params, int key_idx,
+int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
+				   struct key_params *params, int key_idx,
 				   const u8 *mac_addr)
 {
+	int i;
+
 	if (key_idx > 5)
 		return -EINVAL;
 
@@ -197,6 +200,12 @@ int cfg80211_validate_key_settings(struct key_params *params, int key_idx,
 		}
 	}
 
+	for (i = 0; i < rdev->wiphy.n_cipher_suites; i++)
+		if (params->cipher == rdev->wiphy.cipher_suites[i])
+			break;
+	if (i == rdev->wiphy.n_cipher_suites)
+		return -EINVAL;
+
 	return 0;
 }
 
@@ -523,3 +532,33 @@ const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie)
 	return NULL;
 }
 EXPORT_SYMBOL(ieee80211_bss_get_ie);
+
+void cfg80211_upload_connect_keys(struct wireless_dev *wdev)
+{
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+	struct net_device *dev = wdev->netdev;
+	int i;
+
+	if (!wdev->connect_keys)
+		return;
+
+	for (i = 0; i < 6; i++) {
+		if (!wdev->connect_keys->params[i].cipher)
+			continue;
+		if (rdev->ops->add_key(wdev->wiphy, dev, i, NULL,
+					&wdev->connect_keys->params[i]))
+			printk(KERN_ERR "%s: failed to set key %d\n",
+				dev->name, i);
+		if (wdev->connect_keys->def == i)
+			if (rdev->ops->set_default_key(wdev->wiphy, dev, i))
+				printk(KERN_ERR "%s: failed to set defkey %d\n",
+					dev->name, i);
+		if (wdev->connect_keys->defmgmt == i)
+			if (rdev->ops->set_default_mgmt_key(wdev->wiphy, dev, i))
+				printk(KERN_ERR "%s: failed to set mgtdef %d\n",
+					dev->name, i);
+	}
+
+	kfree(wdev->connect_keys);
+	wdev->connect_keys = NULL;
+}

net/wireless/wext-compat.c

@@ -453,15 +453,32 @@ int cfg80211_wext_giwretry(struct net_device *dev,
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwretry);
 
-static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
+static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 				     struct net_device *dev, const u8 *addr,
 				     bool remove, bool tx_key, int idx,
 				     struct key_params *params)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
-	int err;
+	int err, i;
+
+	if (!wdev->wext.keys) {
+		wdev->wext.keys = kzalloc(sizeof(*wdev->wext.keys),
+					      GFP_KERNEL);
+		if (!wdev->wext.keys)
+			return -ENOMEM;
+		for (i = 0; i < 6; i++)
+			wdev->wext.keys->params[i].key =
+				wdev->wext.keys->data[i];
+	}
+
+	if (wdev->iftype != NL80211_IFTYPE_ADHOC &&
+	    wdev->iftype != NL80211_IFTYPE_STATION)
+		return -EOPNOTSUPP;
 
 	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
+		if (!wdev->current_bss)
+			return -ENOLINK;
+
 		if (!rdev->ops->set_default_mgmt_key)
 			return -EOPNOTSUPP;
 
@@ -471,8 +488,14 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 		return -EINVAL;
 
 	if (remove) {
+		err = 0;
+		if (wdev->current_bss)
 			err = rdev->ops->del_key(&rdev->wiphy, dev, idx, addr);
 		if (!err) {
+			if (!addr) {
+				wdev->wext.keys->params[idx].key_len = 0;
+				wdev->wext.keys->params[idx].cipher = 0;
+			}
 			if (idx == wdev->wext.default_key)
 				wdev->wext.default_key = -1;
 			else if (idx == wdev->wext.default_mgmt_key)
@@ -486,18 +509,31 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 			return 0;
 
 		return err;
-	} else {
+	}
+
 	if (addr)
 		tx_key = false;
 
-		if (cfg80211_validate_key_settings(params, idx, addr))
+	if (cfg80211_validate_key_settings(rdev, params, idx, addr))
 		return -EINVAL;
 
+	err = 0;
+	if (wdev->current_bss)
 		err = rdev->ops->add_key(&rdev->wiphy, dev, idx, addr, params);
 	if (err)
 		return err;
 
-		if (tx_key || (!addr && wdev->wext.default_key == -1)) {
+	if (!addr) {
+		wdev->wext.keys->params[idx] = *params;
+		memcpy(wdev->wext.keys->data[idx],
+			params->key, params->key_len);
+		wdev->wext.keys->params[idx].key =
+			wdev->wext.keys->data[idx];
+	}
+
+	if (params->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
+	    (tx_key || (!addr && wdev->wext.default_key == -1))) {
+		if (wdev->current_bss)
 			err = rdev->ops->set_default_key(&rdev->wiphy,
 							 dev, idx);
 		if (!err)
@@ -507,6 +543,7 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 
 	if (params->cipher == WLAN_CIPHER_SUITE_AES_CMAC &&
 	    (tx_key || (!addr && wdev->wext.default_mgmt_key == -1))) {
+		if (wdev->current_bss)
 			err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
 							      dev, idx);
 		if (!err)
@@ -515,7 +552,21 @@ static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 	}
 
 	return 0;
-	}
+}
+
+static int cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
+				   struct net_device *dev, const u8 *addr,
+				   bool remove, bool tx_key, int idx,
+				   struct key_params *params)
+{
+	int err;
+
+	wdev_lock(dev->ieee80211_ptr);
+	err = __cfg80211_set_encryption(rdev, dev, addr, remove,
+					tx_key, idx, params);
+	wdev_unlock(dev->ieee80211_ptr);
+
+	return err;
 }
 
 int cfg80211_wext_siwencode(struct net_device *dev,
@@ -528,6 +579,10 @@ int cfg80211_wext_siwencode(struct net_device *dev,
 	bool remove = false;
 	struct key_params params;
 
+	if (wdev->iftype != NL80211_IFTYPE_STATION &&
+	    wdev->iftype != NL80211_IFTYPE_ADHOC)
+		return -EOPNOTSUPP;
+
 	/* no use -- only MFP (set_default_mgmt_key) is optional */
 	if (!rdev->ops->del_key ||
 	    !rdev->ops->add_key ||
@@ -548,9 +603,14 @@ int cfg80211_wext_siwencode(struct net_device *dev,
 		remove = true;
 	else if (erq->length == 0) {
 		/* No key data - just set the default TX key index */
-		err = rdev->ops->set_default_key(&rdev->wiphy, dev, idx);
+		err = 0;
+		wdev_lock(wdev);
+		if (wdev->current_bss)
+			err = rdev->ops->set_default_key(&rdev->wiphy,
+							 dev, idx);
 		if (!err)
 			wdev->wext.default_key = idx;
+		wdev_unlock(wdev);
 		return err;
 	}
 
@@ -583,6 +643,10 @@ int cfg80211_wext_siwencodeext(struct net_device *dev,
 	struct key_params params;
 	u32 cipher;
 
+	if (wdev->iftype != NL80211_IFTYPE_STATION &&
+	    wdev->iftype != NL80211_IFTYPE_ADHOC)
+		return -EOPNOTSUPP;
+
 	/* no use -- only MFP (set_default_mgmt_key) is optional */
 	if (!rdev->ops->del_key ||
 	    !rdev->ops->add_key ||
@@ -656,37 +720,15 @@ int cfg80211_wext_siwencodeext(struct net_device *dev,
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_siwencodeext);
 
-struct giwencode_cookie {
-	size_t buflen;
-	char *keybuf;
-};
-
-static void giwencode_get_key_cb(void *cookie, struct key_params *params)
-{
-	struct giwencode_cookie *data = cookie;
-
-	if (!params->key) {
-		data->buflen = 0;
-		return;
-	}
-
-	data->buflen = min_t(size_t, data->buflen, params->key_len);
-	memcpy(data->keybuf, params->key, data->buflen);
-}
-
 int cfg80211_wext_giwencode(struct net_device *dev,
 			    struct iw_request_info *info,
 			    struct iw_point *erq, char *keybuf)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
-	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
-	int idx, err;
-	struct giwencode_cookie data = {
-		.keybuf = keybuf,
-		.buflen = erq->length,
-	};
+	int idx;
 
-	if (!rdev->ops->get_key)
+	if (wdev->iftype != NL80211_IFTYPE_STATION &&
+	    wdev->iftype != NL80211_IFTYPE_ADHOC)
 		return -EOPNOTSUPP;
 
 	idx = erq->flags & IW_ENCODE_INDEX;
@@ -701,21 +743,18 @@ int cfg80211_wext_giwencode(struct net_device *dev,
 
 	erq->flags = idx + 1;
 
-	err = rdev->ops->get_key(&rdev->wiphy, dev, idx, NULL, &data,
-				 giwencode_get_key_cb);
-	if (!err) {
-		erq->length = data.buflen;
-		erq->flags |= IW_ENCODE_ENABLED;
-		return 0;
-	}
-
-	if (err == -ENOENT) {
+	if (!wdev->wext.keys || !wdev->wext.keys->params[idx].cipher) {
 		erq->flags |= IW_ENCODE_DISABLED;
 		erq->length = 0;
 		return 0;
 	}
 
-	return err;
+	erq->length = min_t(size_t, erq->length,
+			    wdev->wext.keys->params[idx].key_len);
+	memcpy(keybuf, wdev->wext.keys->params[idx].key, erq->length);
+	erq->flags |= IW_ENCODE_ENABLED;
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwencode);
 

net/wireless/wext-sme.c

@@ -10,10 +10,11 @@
 #include <net/cfg80211.h>
 #include "nl80211.h"
 
-static int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
+int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
 			      struct wireless_dev *wdev)
 {
-	int err;
+	struct cfg80211_cached_keys *ck = NULL;
+	int err, i;
 
 	ASSERT_RDEV_LOCK(rdev);
 	ASSERT_WDEV_LOCK(wdev);
@@ -25,10 +26,25 @@ static int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
 	wdev->wext.connect.ie_len = wdev->wext.ie_len;
 	wdev->wext.connect.privacy = wdev->wext.default_key != -1;
 
-	err = 0;
-	if (wdev->wext.connect.ssid_len != 0)
+	if (wdev->wext.keys) {
+		wdev->wext.keys->def = wdev->wext.default_key;
+		wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
+	}
+
+	if (!wdev->wext.connect.ssid_len)
+		return 0;
+
+	if (wdev->wext.keys) {
+		ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
+		if (!ck)
+			return -ENOMEM;
+		for (i = 0; i < 6; i++)
+			ck->params[i].key = ck->data[i];
+	}
 	err = __cfg80211_connect(rdev, wdev->netdev,
-					 &wdev->wext.connect);
+				 &wdev->wext.connect, ck);
+	if (err)
+		kfree(ck);
 
 	return err;
 }