ieee802154: fix byteorder for short address and panid

This patch changes the byteorder handling for short and panid handling.
We now except to get little endian in nl802154 for these attributes.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/cfg802154.h

@@ -40,9 +40,9 @@ struct cfg802154_ops {
 				    struct wpan_dev *wpan_dev);
 	int	(*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
 	int	(*set_pan_id)(struct wpan_phy *wpan_phy,
-			      struct wpan_dev *wpan_dev, u16 pan_id);
+			      struct wpan_dev *wpan_dev, __le16 pan_id);
 	int	(*set_short_addr)(struct wpan_phy *wpan_phy,
-				  struct wpan_dev *wpan_dev, u16 short_addr);
+				  struct wpan_dev *wpan_dev, __le16 short_addr);
 	int	(*set_backoff_exponent)(struct wpan_phy *wpan_phy,
 					struct wpan_dev *wpan_dev, u8 min_be,
 					u8 max_be);

net/ieee802154/nl802154.c

@@ -627,7 +627,7 @@ static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
 	struct cfg802154_registered_device *rdev = info->user_ptr[0];
 	struct net_device *dev = info->user_ptr[1];
 	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
-	u16 pan_id;
+	__le16 pan_id;
 
 	/* conflict here while tx/rx calls */
 	if (netif_running(dev))
@@ -640,7 +640,7 @@ static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
 	if (!info->attrs[NL802154_ATTR_PAN_ID])
 		return -EINVAL;
 
-	pan_id = nla_get_u16(info->attrs[NL802154_ATTR_PAN_ID]);
+	pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
 
 	return rdev_set_pan_id(rdev, wpan_dev, pan_id);
 }
@@ -650,7 +650,7 @@ static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
 	struct cfg802154_registered_device *rdev = info->user_ptr[0];
 	struct net_device *dev = info->user_ptr[1];
 	struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
-	u16 short_addr;
+	__le16 short_addr;
 
 	/* conflict here while tx/rx calls */
 	if (netif_running(dev))
@@ -663,7 +663,7 @@ static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
 	if (!info->attrs[NL802154_ATTR_SHORT_ADDR])
 		return -EINVAL;
 
-	short_addr = nla_get_u16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
+	short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
 
 	return rdev_set_short_addr(rdev, wpan_dev, short_addr);
 }

net/ieee802154/rdev-ops.h

@@ -43,14 +43,14 @@ rdev_set_channel(struct cfg802154_registered_device *rdev, u8 page, u8 channel)
 
 static inline int
 rdev_set_pan_id(struct cfg802154_registered_device *rdev,
-		struct wpan_dev *wpan_dev, u16 pan_id)
+		struct wpan_dev *wpan_dev, __le16 pan_id)
 {
 	return rdev->ops->set_pan_id(&rdev->wpan_phy, wpan_dev, pan_id);
 }
 
 static inline int
 rdev_set_short_addr(struct cfg802154_registered_device *rdev,
-		    struct wpan_dev *wpan_dev, u16 short_addr)
+		    struct wpan_dev *wpan_dev, __le16 short_addr)
 {
 	return rdev->ops->set_short_addr(&rdev->wpan_phy, wpan_dev, short_addr);
 }

net/mac802154/cfg.c

@@ -88,7 +88,7 @@ ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel)
 
 static int
 ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
-		      u16 pan_id)
+		      __le16 pan_id)
 {
 	ASSERT_RTNL();
 
@@ -99,10 +99,10 @@ ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 	 *
 	 * This could useful to simple deassociate an device.
 	 */
-	if (pan_id == IEEE802154_PAN_ID_BROADCAST)
+	if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST))
 		return -EINVAL;
 
-	wpan_dev->pan_id = cpu_to_le16(pan_id);
+	wpan_dev->pan_id = pan_id;
 	return 0;
 }
 
@@ -125,7 +125,7 @@ ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
 
 static int
 ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
-			  u16 short_addr)
+			  __le16 short_addr)
 {
 	ASSERT_RTNL();
 
@@ -140,11 +140,11 @@ ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
 	 * I think we should allow to set these settings but
 	 * don't allow to allow socket communication with it.
 	 */
-	if (short_addr == IEEE802154_ADDR_SHORT_UNSPEC ||
-	    short_addr == IEEE802154_ADDR_SHORT_BROADCAST)
+	if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) ||
+	    short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST))
 		return -EINVAL;
 
-	wpan_dev->short_addr = cpu_to_le16(short_addr);
+	wpan_dev->short_addr = short_addr;
 	return 0;
 }