[PATCH net-next v11 07/10] net: phy: phy_link_topology: Add a helper to retrieve ports
From: Maxime Chevallier <maxime.chevallier@bootlin.com>
Date: 2026-05-21 12:11:24
Also in:
lkml
Subsystem:
ethernet phy library, networking [ethtool phy topology], the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, Maxime Chevallier, Linus Torvalds
In order to allow netlink access to phy_ports, let's add a helper to retrieve them. When handling a port coming from phy_link_topology, the caller must hold rtnl until it's done with it. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> --- include/linux/phy_link_topology.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/include/linux/phy_link_topology.h b/include/linux/phy_link_topology.h
index 66bceff72b19..ac2f5c80f1a6 100644
--- a/include/linux/phy_link_topology.h
+++ b/include/linux/phy_link_topology.h@@ -13,6 +13,7 @@ #include <linux/ethtool.h> #include <linux/netdevice.h> +#include <linux/rtnetlink.h> struct xarray; struct phy_device;
@@ -66,6 +67,20 @@ phy_link_topo_get_phy(struct net_device *dev, u32 phyindex) return NULL; } +static inline struct phy_port * +phy_link_topo_get_port(struct net_device *dev, u32 port_id) +{ + struct phy_link_topology *topo = dev->link_topo; + + ASSERT_RTNL(); + + if (!topo) + return NULL; + + /* Caller must hold RTNL while handling the phy_port */ + return xa_load(&topo->ports, port_id); +} + #else static inline int phy_link_topo_add_phy(struct net_device *dev, struct phy_device *phy,
@@ -95,6 +110,12 @@ phy_link_topo_get_phy(struct net_device *dev, u32 phyindex) { return NULL; } + +static inline struct phy_port * +phy_link_topo_get_port(struct net_device *dev, u32 port_id) +{ + return NULL; +} #endif #endif /* __PHY_LINK_TOPOLOGY_H */
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2.54.0