[PATCH 12/12] net: Get rid of SWITCHDEV_ATTR_ID_PORT_PARENT_ID

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Now that we have a dedicated NDO for getting a port's parent ID, get rid
of SWITCHDEV_ATTR_ID_PORT_PARENT_ID and convert all callers to use the
NDO exclusively. This is a preliminary change to getting rid of
switchdev_ops eventually.

Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
 include/net/switchdev.h   |  2 --
 net/bridge/br_switchdev.c | 11 +++--------
 net/core/net-sysfs.c      | 14 +++-----------
 net/core/rtnetlink.c      | 16 ++++------------
 net/ipv4/ipmr.c           | 14 ++++----------
 net/switchdev/switchdev.c | 20 +++++++++-----------
 6 files changed, 23 insertions(+), 54 deletions(-)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 63843ae5dc81..e1a5e8bc24b8 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -43,7 +43,6 @@ static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
 
 enum switchdev_attr_id {
 	SWITCHDEV_ATTR_ID_UNDEFINED,
-	SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
 	SWITCHDEV_ATTR_ID_PORT_STP_STATE,
 	SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
 	SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
@@ -61,7 +60,6 @@ struct switchdev_attr {
 	void *complete_priv;
 	void (*complete)(struct net_device *dev, int err, void *priv);
 	union {
-		struct netdev_phys_item_id ppid;	/* PORT_PARENT_ID */
 		u8 stp_state;				/* PORT_STP_STATE */
 		unsigned long brport_flags;		/* PORT_BRIDGE_FLAGS */
 		unsigned long brport_flags_support;	/* PORT_BRIDGE_FLAGS_SUPPORT */
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index 501a4221220a..620fd645f6f1 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -24,18 +24,13 @@ static int br_switchdev_mark_get(struct net_bridge *br, struct net_device *dev)
 int nbp_switchdev_mark_set(struct net_bridge_port *p)
 {
 	const struct net_device_ops *ops = p->dev->netdev_ops;
-	struct switchdev_attr attr = {
-		.orig_dev = p->dev,
-		.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-	};
-	int err;
+	struct netdev_phys_item_id ppid = { };
+	int err = -EOPNOTSUPP;
 
 	ASSERT_RTNL();
 
 	if (ops->ndo_get_port_parent_id)
-		err = ops->ndo_get_port_parent_id(p->dev, &attr.u.ppid);
-	else
-		err = switchdev_port_attr_get(p->dev, &attr);
+		err = ops->ndo_get_port_parent_id(p->dev, &ppid);
 	if (err) {
 		if (err == -EOPNOTSUPP)
 			return 0;
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index cc05e8b72657..1d2d76930afd 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -12,7 +12,6 @@
 #include <linux/capability.h>
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
-#include <net/switchdev.h>
 #include <linux/if_arp.h>
 #include <linux/slab.h>
 #include <linux/sched/signal.h>
@@ -502,19 +501,12 @@ static ssize_t phys_switch_id_show(struct device *dev,
 		return restart_syscall();
 
 	if (dev_isalive(netdev)) {
-		struct switchdev_attr attr = {
-			.orig_dev = netdev,
-			.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-			.flags = SWITCHDEV_F_NO_RECURSE,
-		};
+		struct netdev_phys_item_id ppid = { };
 
 		if (ops->ndo_get_port_parent_id)
-			ret = ops->ndo_get_port_parent_id(netdev, &attr.u.ppid);
-		else
-			ret = switchdev_port_attr_get(netdev, &attr);
+			ret = ops->ndo_get_port_parent_id(netdev, &ppid);
 		if (!ret)
-			ret = sprintf(buf, "%*phN\n", attr.u.ppid.id_len,
-				      attr.u.ppid.id);
+			ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id);
 	}
 	rtnl_unlock();
 
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index ed8564eb97c8..27bccf68538e 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -46,7 +46,6 @@
 
 #include <linux/inet.h>
 #include <linux/netdevice.h>
-#include <net/switchdev.h>
 #include <net/ip.h>
 #include <net/protocol.h>
 #include <net/arp.h>
@@ -1147,25 +1146,18 @@ static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev)
 static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev)
 {
 	const struct net_device_ops *ops = dev->netdev_ops;
-	int err;
-	struct switchdev_attr attr = {
-		.orig_dev = dev,
-		.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-		.flags = SWITCHDEV_F_NO_RECURSE,
-	};
+	struct netdev_phys_item_id ppid = { };
+	int err = -EOPNOTSUPP;
 
 	if (ops->ndo_get_port_parent_id)
-		err = ops->ndo_get_port_parent_id(dev, &attr.u.ppid);
-	else
-		err = switchdev_port_attr_get(dev, &attr);
+		err = ops->ndo_get_port_parent_id(dev, &ppid);
 	if (err) {
 		if (err == -EOPNOTSUPP)
 			return 0;
 		return err;
 	}
 
-	if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.u.ppid.id_len,
-		    attr.u.ppid.id))
+	if (nla_put(skb, IFLA_PHYS_SWITCH_ID, ppid.id_len, ppid.id))
 		return -EMSGSIZE;
 
 	return 0;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 9f67394b6691..ac592bd07be1 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -67,7 +67,6 @@
 #include <net/fib_rules.h>
 #include <linux/netconf.h>
 #include <net/nexthop.h>
-#include <net/switchdev.h>
 
 #include <linux/nospec.h>
 
@@ -837,11 +836,9 @@ static void ipmr_update_thresholds(struct mr_table *mrt, struct mr_mfc *cache,
 static int vif_add(struct net *net, struct mr_table *mrt,
 		   struct vifctl *vifc, int mrtsock)
 {
+	struct netdev_phys_item_id ppid = { };
 	const struct net_device_ops *ops;
 	int vifi = vifc->vifc_vifi;
-	struct switchdev_attr attr = {
-		.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-	};
 	struct vif_device *v = &mrt->vif_table[vifi];
 	struct net_device *dev;
 	struct in_device *in_dev;
@@ -923,12 +920,9 @@ static int vif_add(struct net *net, struct mr_table *mrt,
 	attr.orig_dev = dev;
 	ops = dev->netdev_ops;
 	if (ops->ndo_get_port_parent_id &&
-	    !ops->ndo_get_port_parent_id(dev, &attr.ppid)) {
-		memcpy(v->dev_parent_id.id, attr.u.ppid.id, attr.u.ppid.id_len);
-		v->dev_parent_id.id_len = attr.u.ppid.id_len;
-	} else if (!switchdev_port_attr_get(dev, &attr)) {
-		memcpy(v->dev_parent_id.id, attr.u.ppid.id, attr.u.ppid.id_len);
-		v->dev_parent_id.id_len = attr.u.ppid.id_len;
+	    !ops->ndo_get_port_parent_id(dev, &ppid)) {
+		memcpy(v->dev_parent_id.id, ppid.id, ppid.id_len);
+		v->dev_parent_id.id_len = ppid.id_len;
 	} else {
 		v->dev_parent_id.id_len = 0;
 	}
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index cd78253de31d..57e0bfde67b4 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -595,20 +595,18 @@ EXPORT_SYMBOL_GPL(call_switchdev_blocking_notifiers);
 bool switchdev_port_same_parent_id(struct net_device *a,
 				   struct net_device *b)
 {
-	struct switchdev_attr a_attr = {
-		.orig_dev = a,
-		.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-	};
-	struct switchdev_attr b_attr = {
-		.orig_dev = b,
-		.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
-	};
+	struct netdev_phys_item_id id_a = { };
+	struct netdev_phys_item_id id_b = { };
+
+	if (!a->netdev_ops->ndo_get_port_parent_id ||
+	    !b->netdev_ops->ndo_get_port_parent_id)
+		return -EOPNOTSUPP;
 
-	if (switchdev_port_attr_get(a, &a_attr) ||
-	    switchdev_port_attr_get(b, &b_attr))
+	if (a->netdev_ops->ndo_get_port_parent_id(a, &id_a) ||
+	    b->netdev_ops->ndo_get_port_parent_id(b, &id_b))
 		return false;
 
-	return netdev_phys_item_id_same(&a_attr.u.ppid, &b_attr.u.ppid);
+	return netdev_phys_item_id_same(&id_a, &id_b);
 }
 EXPORT_SYMBOL_GPL(switchdev_port_same_parent_id);
 
-- 
2.17.1

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