Re: [RFC PATCH net-next v2 01/10] net: phy: Introduce ethernet link topology representation

diff --git a/include/linux/link_topology.h b/include/linux/link_topology.h

diff --git a/include/linux/link_topology_core.h b/include/linux/link_topology_core.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a16c9cc063fe..7021a0d3d982 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h

@@ -40,7 +40,6 @@
 #include <net/dcbnl.h>
 #endif
 #include <net/netprio_cgroup.h>
-
 #include <linux/netdev_features.h>

 #include <linux/neighbour.h>
 #include <uapi/linux/netdevice.h>

@@ -52,6 +51,7 @@
 #include <net/net_trackers.h>
 #include <net/net_debug.h>
 #include <net/dropreason-core.h>
+#include <linux/link_topology_core.h>
 
 struct netpoll_info;
 struct device;

@@ -2405,6 +2405,7 @@ struct net_device {
 #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
 	struct netprio_map __rcu *priomap;
 #endif
+	struct link_topology	link_topo;
 	struct phy_device	*phydev;
 	struct sfp_bus		*sfp_bus;
 	struct lock_class_key	*qdisc_tx_busylock;

diff --git a/include/linux/phy.h b/include/linux/phy.h
index 3cc52826f18e..d698180b1df0 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h

@@ -543,6 +543,8 @@ struct macsec_ops;
  * @drv: Pointer to the driver for this PHY instance
  * @devlink: Create a link between phy dev and mac dev, if the external phy
  *           used by current mac interface is managed by another mac interface.
+ * @phyindex: Unique id across the phy's parent tree of phys to address the PHY
+ *	      from userspace, similar to ifindex. It's never recycled.
  * @phy_id: UID for this device found during discovery
  * @c45_ids: 802.3-c45 Device Identifiers if is_c45.
  * @is_c45:  Set to true if this PHY uses clause 45 addressing.

@@ -640,6 +642,7 @@ struct phy_device {
 
 	struct device_link *devlink;
 
+	int phyindex;