ieee802154: remove mlme get_phy callback

This patch removes the get_phy callback from mlme ops structure. Instead
we doing a dereference via ieee802154_ptr dev pointer. For backwards
compatibility we need to run get_device after dereference wpan_phy via
ieee802154_ptr.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/ieee802154_netdev.h

@@ -423,8 +423,6 @@ struct ieee802154_mlme_ops {
 
 	/* The fields below are required. */
 
-	struct wpan_phy *(*get_phy)(const struct net_device *dev);
-
 	/*
 	 * FIXME: these should become the part of PIB/MIB interface.
 	 * However we still don't have IB interface of any kind
@@ -434,16 +432,6 @@ struct ieee802154_mlme_ops {
 	u8 (*get_dsn)(const struct net_device *dev);
 };
 
-/* The IEEE 802.15.4 standard defines 2 type of the devices:
- * - FFD - full functionality device
- * - RFD - reduce functionality device
- *
- * So 2 sets of mlme operations are needed
- */
-struct ieee802154_reduced_mlme_ops {
-	struct wpan_phy *(*get_phy)(const struct net_device *dev);
-};
-
 static inline struct ieee802154_mlme_ops *
 ieee802154_mlme_ops(const struct net_device *dev)
 {

net/ieee802154/6lowpan_rtnl.c

@@ -407,13 +407,6 @@ static netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev)
 	}
 }
 
-static struct wpan_phy *lowpan_get_phy(const struct net_device *dev)
-{
-	struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
-
-	return ieee802154_mlme_ops(real_dev)->get_phy(real_dev);
-}
-
 static __le16 lowpan_get_pan_id(const struct net_device *dev)
 {
 	struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
@@ -465,7 +458,6 @@ static const struct net_device_ops lowpan_netdev_ops = {
 
 static struct ieee802154_mlme_ops lowpan_mlme = {
 	.get_pan_id = lowpan_get_pan_id,
-	.get_phy = lowpan_get_phy,
 	.get_short_addr = lowpan_get_short_addr,
 	.get_dsn = lowpan_get_dsn,
 };

net/ieee802154/nl-mac.c

@@ -94,8 +94,9 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
 		goto out;
 
 	ops = ieee802154_mlme_ops(dev);
-	phy = ops->get_phy(dev);
+	phy = dev->ieee802154_ptr->wpan_phy;
 	BUG_ON(!phy);
+	get_device(&phy->dev);
 
 	short_addr = ops->get_short_addr(dev);
 	pan_id = ops->get_pan_id(dev);
@@ -493,7 +494,8 @@ int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
 	    !info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
 		goto out;
 
-	phy = ops->get_phy(dev);
+	phy = dev->ieee802154_ptr->wpan_phy;
+	get_device(&phy->dev);
 
 	ops->get_mac_params(dev, &params);
 

net/ieee802154/nl-phy.c

@@ -287,8 +287,9 @@ int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info)
 	if (!dev)
 		return -ENODEV;
 
-	phy = ieee802154_mlme_ops(dev)->get_phy(dev);
+	phy = dev->ieee802154_ptr->wpan_phy;
 	BUG_ON(!phy);
+	get_device(&phy->dev);
 
 	rc = -EINVAL;
 	/* phy name is optional, but should be checked if it's given */

net/mac802154/iface.c

@@ -428,7 +428,6 @@ ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata, int type)
 	case IEEE802154_DEV_MONITOR:
 		sdata->dev->destructor = free_netdev;
 		sdata->dev->netdev_ops = &mac802154_monitor_ops;
-		sdata->dev->ml_priv = &mac802154_mlme_reduced;
 		sdata->promisuous_mode = true;
 		break;
 	default:

net/mac802154/mac_cmd.c

@@ -67,15 +67,6 @@ static int mac802154_mlme_start_req(struct net_device *dev,
 	return rc;
 }
 
-static struct wpan_phy *mac802154_get_phy(const struct net_device *dev)
-{
-	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
-
-	BUG_ON(dev->type != ARPHRD_IEEE802154);
-
-	return to_phy(get_device(&sdata->local->phy->dev));
-}
-
 static int mac802154_set_mac_params(struct net_device *dev,
 				    const struct ieee802154_mac_params *params)
 {
@@ -134,12 +125,7 @@ static struct ieee802154_llsec_ops mac802154_llsec_ops = {
 	.unlock_table = mac802154_unlock_table,
 };
 
-struct ieee802154_reduced_mlme_ops mac802154_mlme_reduced = {
-	.get_phy = mac802154_get_phy,
-};
-
 struct ieee802154_mlme_ops mac802154_mlme_wpan = {
-	.get_phy = mac802154_get_phy,
 	.start_req = mac802154_mlme_start_req,
 	.get_pan_id = mac802154_dev_get_pan_id,
 	.get_short_addr = mac802154_dev_get_short_addr,