[PATCH] libertas: Make WPA work through supplicant handshake

Fix WPA so it works up through the supplicant 4-Way handshake process.
Doesn't successfully pass traffic yet; may be problems installing
the GTK to the firmware.

- RSN needs to be enabled before the association command is sent
- Use keys from the association request not the adapter structure
- cmd_act_mac_strict_protection_enable != IW_AUTH_DROP_UNENCRYPTED
- Fix network filtering logic in is_network_compatible() WPA helpers

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 98 insertions, 64 deletions

diff --git a/drivers/net/wireless/libertas/assoc.c b/drivers/net/wireless/libertas/assoc.c
index 48fc6d1..2ee38a2 100644
--- a/drivers/net/wireless/libertas/assoc.c
+++ b/drivers/net/wireless/libertas/assoc.c
@@ -347,7 +347,17 @@ static int assoc_helper_secinfo(wlan_private *priv,
 		sizeof(struct wlan_802_11_security));
 
 	ret = libertas_set_mac_packet_filter(priv);
+	if (ret)
+		goto out;
 
+	/* enable/disable RSN */
+	ret = libertas_prepare_and_send_command(priv,
+				    cmd_802_11_enable_rsn,
+				    cmd_act_set,
+				    cmd_option_waitforrsp,
+				    0, assoc_req);
+
+out:
 	lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 	return ret;
 }
@@ -360,22 +370,12 @@ static int assoc_helper_wpa_keys(wlan_private *priv,
 
 	lbs_deb_enter(LBS_DEB_ASSOC);
 
-	/* enable/Disable RSN */
-	ret = libertas_prepare_and_send_command(priv,
-				    cmd_802_11_enable_rsn,
-				    cmd_act_set,
-				    cmd_option_waitforrsp,
-				    0, assoc_req);
-	if (ret)
-		goto out;
-
 	ret = libertas_prepare_and_send_command(priv,
 				    cmd_802_11_key_material,
 				    cmd_act_set,
 				    cmd_option_waitforrsp,
 				    0, assoc_req);
 
-out:
 	lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 	return ret;
 }
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index 53ac28e..8da788e 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -232,22 +232,25 @@ done:
 
 static int wlan_cmd_802_11_enable_rsn(wlan_private * priv,
 				      struct cmd_ds_command *cmd,
-				      u16 cmd_action)
+				      u16 cmd_action,
+				      void * pdata_buf)
 {
 	struct cmd_ds_802_11_enable_rsn *penableRSN = &cmd->params.enbrsn;
-	wlan_adapter *adapter = priv->adapter;
+	struct assoc_request * assoc_req = pdata_buf;
+
+	lbs_deb_enter(LBS_DEB_CMD);
 
 	cmd->command = cpu_to_le16(cmd_802_11_enable_rsn);
-	cmd->size =
-	    cpu_to_le16(sizeof(struct cmd_ds_802_11_enable_rsn) +
-			     S_DS_GEN);
+	cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_enable_rsn) +
+				S_DS_GEN);
 	penableRSN->action = cpu_to_le16(cmd_action);
-	if (adapter->secinfo.WPAenabled || adapter->secinfo.WPA2enabled) {
+	if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
 		penableRSN->enable = cpu_to_le16(cmd_enable_rsn);
 	} else {
 		penableRSN->enable = cpu_to_le16(cmd_disable_rsn);
 	}
 
+	lbs_deb_leave(LBS_DEB_CMD);
 	return 0;
 }
 
@@ -258,14 +261,12 @@ static void set_one_wpa_key(struct MrvlIEtype_keyParamSet * pkeyparamset,
 	pkeyparamset->keytypeid = cpu_to_le16(pkey->type);
 
 	if (pkey->flags & KEY_INFO_WPA_ENABLED) {
-		pkeyparamset->keyinfo = cpu_to_le16(KEY_INFO_WPA_ENABLED);
-	} else {
-		pkeyparamset->keyinfo = cpu_to_le16(!KEY_INFO_WPA_ENABLED);
+		pkeyparamset->keyinfo |= cpu_to_le16(KEY_INFO_WPA_ENABLED);
 	}
-
 	if (pkey->flags & KEY_INFO_WPA_UNICAST) {
 		pkeyparamset->keyinfo |= cpu_to_le16(KEY_INFO_WPA_UNICAST);
-	} else if (pkey->flags & KEY_INFO_WPA_MCAST) {
+	}
+	if (pkey->flags & KEY_INFO_WPA_MCAST) {
 		pkeyparamset->keyinfo |= cpu_to_le16(KEY_INFO_WPA_MCAST);
 	}
 
@@ -283,9 +284,9 @@ static int wlan_cmd_802_11_key_material(wlan_private * priv,
 					u16 cmd_action,
 					u32 cmd_oid, void *pdata_buf)
 {
-	wlan_adapter *adapter = priv->adapter;
 	struct cmd_ds_802_11_key_material *pkeymaterial =
 	    &cmd->params.keymaterial;
+	struct assoc_request * assoc_req = pdata_buf;
 	int ret = 0;
 	int index = 0;
 
@@ -295,29 +296,28 @@ static int wlan_cmd_802_11_key_material(wlan_private * priv,
 	pkeymaterial->action = cpu_to_le16(cmd_action);
 
 	if (cmd_action == cmd_act_get) {
-		cmd->size = cpu_to_le16(  S_DS_GEN
-		                             + sizeof (pkeymaterial->action));
+		cmd->size = cpu_to_le16(S_DS_GEN + sizeof (pkeymaterial->action));
 		ret = 0;
 		goto done;
 	}
 
 	memset(&pkeymaterial->keyParamSet, 0, sizeof(pkeymaterial->keyParamSet));
 
-	if (adapter->wpa_unicast_key.len) {
+	if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
 		set_one_wpa_key(&pkeymaterial->keyParamSet[index],
-		                &adapter->wpa_unicast_key);
+		                &assoc_req->wpa_unicast_key);
 		index++;
 	}
 
-	if (adapter->wpa_mcast_key.len) {
+	if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
 		set_one_wpa_key(&pkeymaterial->keyParamSet[index],
-		                &adapter->wpa_mcast_key);
+		                &assoc_req->wpa_mcast_key);
 		index++;
 	}
 
 	cmd->size = cpu_to_le16(  S_DS_GEN
-	                             + sizeof (pkeymaterial->action)
-	                             + index * sizeof(struct MrvlIEtype_keyParamSet));
+	                        + sizeof (pkeymaterial->action)
+	                        + (index * sizeof(struct MrvlIEtype_keyParamSet)));
 
 	ret = 0;
 
@@ -1302,13 +1302,13 @@ int libertas_prepare_and_send_command(wlan_private * priv,
 		break;
 
 	case cmd_802_11_enable_rsn:
-		ret = wlan_cmd_802_11_enable_rsn(priv, cmdptr, cmd_action);
+		ret = wlan_cmd_802_11_enable_rsn(priv, cmdptr, cmd_action,
+				pdata_buf);
 		break;
 
 	case cmd_802_11_key_material:
-		ret = wlan_cmd_802_11_key_material(priv, cmdptr,
-						   cmd_action, cmd_oid,
-						   pdata_buf);
+		ret = wlan_cmd_802_11_key_material(priv, cmdptr, cmd_action,
+				cmd_oid, pdata_buf);
 		break;
 
 	case cmd_802_11_pairwise_tsc:
diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c
index ec16cd0..3da1efd 100644
--- a/drivers/net/wireless/libertas/scan.c
+++ b/drivers/net/wireless/libertas/scan.c
@@ -99,7 +99,6 @@ static inline int match_bss_wpa(struct wlan_802_11_security * secinfo,
 {
 	if (  !secinfo->wep_enabled
 	   && secinfo->WPAenabled
-	   && !secinfo->WPA2enabled
 	   && (match_bss->wpa_ie[0] == WPA_IE)
 	   /* privacy bit may NOT be set in some APs like LinkSys WRT54G
 	      && bss->privacy */
@@ -113,7 +112,6 @@ static inline int match_bss_wpa2(struct wlan_802_11_security * secinfo,
 			struct bss_descriptor * match_bss)
 {
 	if (  !secinfo->wep_enabled
-	   && !secinfo->WPAenabled
 	   && secinfo->WPA2enabled
 	   && (match_bss->rsn_ie[0] == WPA2_IE)
 	   /* privacy bit may NOT be set in some APs like LinkSys WRT54G
diff --git a/drivers/net/wireless/libertas/wext.c b/drivers/net/wireless/libertas/wext.c
index 40dd080..2edc10c 100644
--- a/drivers/net/wireless/libertas/wext.c
+++ b/drivers/net/wireless/libertas/wext.c
@@ -1498,6 +1498,8 @@ static void disable_wep(struct assoc_request *assoc_req)
 {
 	int i;
 
+	lbs_deb_enter(LBS_DEB_WEXT);
+
 	/* Set Open System auth mode */
 	assoc_req->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
 
@@ -1508,6 +1510,27 @@ static void disable_wep(struct assoc_request *assoc_req)
 
 	set_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags);
 	set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
+
+	lbs_deb_leave(LBS_DEB_WEXT);
+}
+
+static void disable_wpa(struct assoc_request *assoc_req)
+{
+	lbs_deb_enter(LBS_DEB_WEXT);
+
+	memset(&assoc_req->wpa_mcast_key, 0, sizeof (struct WLAN_802_11_KEY));
+	assoc_req->wpa_mcast_key.flags = KEY_INFO_WPA_MCAST;
+	set_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
+
+	memset(&assoc_req->wpa_unicast_key, 0, sizeof (struct WLAN_802_11_KEY));
+	assoc_req->wpa_unicast_key.flags = KEY_INFO_WPA_UNICAST;
+	set_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
+
+	assoc_req->secinfo.WPAenabled = 0;
+	assoc_req->secinfo.WPA2enabled = 0;
+	set_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags);
+
+	lbs_deb_leave(LBS_DEB_WEXT);
 }
 
 /**
@@ -1540,6 +1563,7 @@ static int wlan_set_encode(struct net_device *dev,
 
 	if (dwrq->flags & IW_ENCODE_DISABLED) {
 		disable_wep (assoc_req);
+		disable_wpa (assoc_req);
 		goto out;
 	}
 
@@ -1641,6 +1665,7 @@ static int wlan_get_encodeext(struct net_device *dev,
 		if (   adapter->secinfo.wep_enabled
 		    && !adapter->secinfo.WPAenabled
 		    && !adapter->secinfo.WPA2enabled) {
+			/* WEP */
 			ext->alg = IW_ENCODE_ALG_WEP;
 			ext->key_len = adapter->wep_keys[index].len;
 			key = &adapter->wep_keys[index].key[0];
@@ -1648,8 +1673,27 @@ static int wlan_get_encodeext(struct net_device *dev,
 		           && (adapter->secinfo.WPAenabled ||
 		               adapter->secinfo.WPA2enabled)) {
 			/* WPA */
-			ext->alg = IW_ENCODE_ALG_TKIP;
-			ext->key_len = 0;
+			struct WLAN_802_11_KEY * pkey = NULL;
+
+			if (   adapter->wpa_mcast_key.len
+			    && (adapter->wpa_mcast_key.flags & KEY_INFO_WPA_ENABLED))
+				pkey = &adapter->wpa_mcast_key;
+			else if (   adapter->wpa_unicast_key.len
+			         && (adapter->wpa_unicast_key.flags & KEY_INFO_WPA_ENABLED))
+				pkey = &adapter->wpa_unicast_key;
+
+			if (pkey) {
+				if (pkey->type == KEY_TYPE_ID_AES) {
+					ext->alg = IW_ENCODE_ALG_CCMP;
+				} else {
+					ext->alg = IW_ENCODE_ALG_TKIP;
+				}
+				ext->key_len = pkey->len;
+				key = &pkey->key[0];
+			} else {
+				ext->alg = IW_ENCODE_ALG_TKIP;
+				ext->key_len = 0;
+			}
 		} else {
 			goto out;
 		}
@@ -1704,6 +1748,7 @@ static int wlan_set_encodeext(struct net_device *dev,
 
 	if ((alg == IW_ENCODE_ALG_NONE) || (dwrq->flags & IW_ENCODE_DISABLED)) {
 		disable_wep (assoc_req);
+		disable_wpa (assoc_req);
 	} else if (alg == IW_ENCODE_ALG_WEP) {
 		u16 is_default = 0, index, set_tx_key = 0;
 
@@ -1739,7 +1784,6 @@ static int wlan_set_encodeext(struct net_device *dev,
 			set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags);
 		if (set_tx_key)
 			set_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags);
-
 	} else if ((alg == IW_ENCODE_ALG_TKIP) || (alg == IW_ENCODE_ALG_CCMP)) {
 		struct WLAN_802_11_KEY * pkey;
 
@@ -1756,28 +1800,35 @@ static int wlan_set_encodeext(struct net_device *dev,
 				goto out;
 		}
 
-		if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY)
+		if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
 			pkey = &assoc_req->wpa_mcast_key;
-		else
+			set_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
+		} else {
 			pkey = &assoc_req->wpa_unicast_key;
+			set_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
+		}
 
 		memset(pkey, 0, sizeof (struct WLAN_802_11_KEY));
 		memcpy(pkey->key, ext->key, ext->key_len);
 		pkey->len = ext->key_len;
-		pkey->flags = KEY_INFO_WPA_ENABLED;
+		if (pkey->len)
+			pkey->flags |= KEY_INFO_WPA_ENABLED;
 
+		/* Do this after zeroing key structure */
 		if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
 			pkey->flags |= KEY_INFO_WPA_MCAST;
-			set_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags);
 		} else {
 			pkey->flags |= KEY_INFO_WPA_UNICAST;
-			set_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags);
 		}
 
-		if (alg == IW_ENCODE_ALG_TKIP)
+		if (alg == IW_ENCODE_ALG_TKIP) {
 			pkey->type = KEY_TYPE_ID_TKIP;
-		else if (alg == IW_ENCODE_ALG_CCMP)
+		} else if (alg == IW_ENCODE_ALG_CCMP) {
 			pkey->type = KEY_TYPE_ID_AES;
+		} else {
+			ret = -EINVAL;
+			goto out;
+		}
 
 		/* If WPA isn't enabled yet, do that now */
 		if (   assoc_req->secinfo.WPAenabled == 0
@@ -1904,6 +1955,7 @@ static int wlan_set_auth(struct net_device *dev,
 	case IW_AUTH_CIPHER_PAIRWISE:
 	case IW_AUTH_CIPHER_GROUP:
 	case IW_AUTH_KEY_MGMT:
+	case IW_AUTH_DROP_UNENCRYPTED:
 		/*
 		 * libertas does not use these parameters
 		 */
@@ -1913,6 +1965,7 @@ static int wlan_set_auth(struct net_device *dev,
 		if (dwrq->value & IW_AUTH_WPA_VERSION_DISABLED) {
 			assoc_req->secinfo.WPAenabled = 0;
 			assoc_req->secinfo.WPA2enabled = 0;
+			disable_wpa (assoc_req);
 		}
 		if (dwrq->value & IW_AUTH_WPA_VERSION_WPA) {
 			assoc_req->secinfo.WPAenabled = 1;
@@ -1927,17 +1980,6 @@ static int wlan_set_auth(struct net_device *dev,
 		updated = 1;
 		break;
 
-	case IW_AUTH_DROP_UNENCRYPTED:
-		if (dwrq->value) {
-			adapter->currentpacketfilter |=
-			    cmd_act_mac_strict_protection_enable;
-		} else {
-			adapter->currentpacketfilter &=
-			    ~cmd_act_mac_strict_protection_enable;
-		}
-		updated = 1;
-		break;
-
 	case IW_AUTH_80211_AUTH_ALG:
 		if (dwrq->value & IW_AUTH_ALG_SHARED_KEY) {
 			assoc_req->secinfo.auth_mode = IW_AUTH_ALG_SHARED_KEY;
@@ -1963,6 +2005,7 @@ static int wlan_set_auth(struct net_device *dev,
 		} else {
 			assoc_req->secinfo.WPAenabled = 0;
 			assoc_req->secinfo.WPA2enabled = 0;
+			disable_wpa (assoc_req);
 		}
 		updated = 1;
 		break;
@@ -2008,13 +2051,6 @@ static int wlan_get_auth(struct net_device *dev,
 			dwrq->value |= IW_AUTH_WPA_VERSION_DISABLED;
 		break;
 
-	case IW_AUTH_DROP_UNENCRYPTED:
-		dwrq->value = 0;
-		if (adapter->currentpacketfilter &
-		    cmd_act_mac_strict_protection_enable)
-			dwrq->value = 1;
-		break;
-
 	case IW_AUTH_80211_AUTH_ALG:
 		dwrq->value = adapter->secinfo.auth_mode;
 		break;