include/net/dsa.h - kernel/common.git - Git at Google

 /*
  * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
  * Copyright (c) 2008-2009 Marvell Semiconductor
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */

 #ifndef __LINUX_NET_DSA_H
 #define __LINUX_NET_DSA_H

 #include <linux/if.h>
 #include <linux/if_ether.h>
 #include <linux/list.h>
 #include <linux/notifier.h>
 #include <linux/timer.h>
 #include <linux/workqueue.h>
 #include <linux/of.h>
 #include <linux/ethtool.h>
 #include <net/devlink.h>
 #include <net/switchdev.h>

 struct tc_action;
 struct phy_device;
 struct fixed_phy_status;

 enum dsa_tag_protocol {
 	DSA_TAG_PROTO_NONE = 0,
 	DSA_TAG_PROTO_BRCM,
 	DSA_TAG_PROTO_DSA,
 	DSA_TAG_PROTO_EDSA,
 	DSA_TAG_PROTO_KSZ,
 	DSA_TAG_PROTO_LAN9303,
 	DSA_TAG_PROTO_MTK,
 	DSA_TAG_PROTO_QCA,
 	DSA_TAG_PROTO_TRAILER,
 	DSA_TAG_LAST,		/* MUST BE LAST */
 };

 #define DSA_MAX_SWITCHES	4
 #define DSA_MAX_PORTS		12

 #define DSA_RTABLE_NONE		-1

 struct dsa_chip_data {
 	/*
 	 * How to access the switch configuration registers.
 	 */
 	struct device	*host_dev;
 	int		sw_addr;

 	/*
 	 * Reference to network devices
 	 */
 	struct device	*netdev[DSA_MAX_PORTS];

 	/* set to size of eeprom if supported by the switch */
 	int		eeprom_len;

 	/* Device tree node pointer for this specific switch chip
 	 * used during switch setup in case additional properties
 	 * and resources needs to be used
 	 */
 	struct device_node *of_node;

 	/*
 	 * The names of the switch's ports.  Use "cpu" to
 	 * designate the switch port that the cpu is connected to,
 	 * "dsa" to indicate that this port is a DSA link to
 	 * another switch, NULL to indicate the port is unused,
 	 * or any other string to indicate this is a physical port.
 	 */
 	char		*port_names[DSA_MAX_PORTS];
 	struct device_node *port_dn[DSA_MAX_PORTS];

 	/*
 	 * An array of which element [a] indicates which port on this
 	 * switch should be used to send packets to that are destined
 	 * for switch a. Can be NULL if there is only one switch chip.
 	 */
 	s8		rtable[DSA_MAX_SWITCHES];
 };

 struct dsa_platform_data {
 	/*
 	 * Reference to a Linux network interface that connects
 	 * to the root switch chip of the tree.
 	 */
 	struct device	*netdev;
 	struct net_device *of_netdev;

 	/*
 	 * Info structs describing each of the switch chips
 	 * connected via this network interface.
 	 */
 	int		nr_chips;
 	struct dsa_chip_data	*chip;
 };

 struct packet_type;

 struct dsa_device_ops {
 	struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
 	struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
 			       struct packet_type *pt);
 	int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
 			    int *offset);
 };

 struct dsa_switch_tree {
 	struct list_head	list;

 	/* Notifier chain for switch-wide events */
 	struct raw_notifier_head	nh;

 	/* Tree identifier */
 	u32 tree;

 	/* Number of switches attached to this tree */
 	struct kref refcount;

 	/* Has this tree been applied to the hardware? */
 	bool applied;

 	/*
 	 * Configuration data for the platform device that owns
 	 * this dsa switch tree instance.
 	 */
 	struct dsa_platform_data	*pd;

 	/* Copy of tag_ops->rcv for faster access in hot path */
 	struct sk_buff *	(*rcv)(struct sk_buff *skb,
 				       struct net_device *dev,
 				       struct packet_type *pt);

 	/*
 	 * The switch port to which the CPU is attached.
 	 */
 	struct dsa_port		*cpu_dp;

 	/*
 	 * Data for the individual switch chips.
 	 */
 	struct dsa_switch	*ds[DSA_MAX_SWITCHES];

 	/*
 	 * Tagging protocol operations for adding and removing an
 	 * encapsulation tag.
 	 */
 	const struct dsa_device_ops *tag_ops;
 };

 /* TC matchall action types, only mirroring for now */
 enum dsa_port_mall_action_type {
 	DSA_PORT_MALL_MIRROR,
 };

 /* TC mirroring entry */
 struct dsa_mall_mirror_tc_entry {
 	u8 to_local_port;
 	bool ingress;
 };

 /* TC matchall entry */
 struct dsa_mall_tc_entry {
 	struct list_head list;
 	unsigned long cookie;
 	enum dsa_port_mall_action_type type;
 	union {
 		struct dsa_mall_mirror_tc_entry mirror;
 	};
 };


 struct dsa_port {
 	struct dsa_switch	*ds;
 	unsigned int		index;
 	const char		*name;
 	struct dsa_port		*cpu_dp;
 	struct net_device	*netdev;
 	struct device_node	*dn;
 	unsigned int		ageing_time;
 	u8			stp_state;
 	struct net_device	*bridge_dev;
 	struct devlink_port	devlink_port;
 	/*
 	 * Original copy of the master netdev ethtool_ops
 	 */
 	struct ethtool_ops	ethtool_ops;
 	const struct ethtool_ops *orig_ethtool_ops;
 };

 struct dsa_switch {
 	struct device *dev;

 	/*
 	 * Parent switch tree, and switch index.
 	 */
 	struct dsa_switch_tree	*dst;
 	int			index;

 	/* Listener for switch fabric events */
 	struct notifier_block	nb;

 	/*
 	 * Give the switch driver somewhere to hang its private data
 	 * structure.
 	 */
 	void *priv;

 	/*
 	 * Configuration data for this switch.
 	 */
 	struct dsa_chip_data	*cd;

 	/*
 	 * The switch operations.
 	 */
 	const struct dsa_switch_ops	*ops;

 	/*
 	 * An array of which element [a] indicates which port on this
 	 * switch should be used to send packets to that are destined
 	 * for switch a. Can be NULL if there is only one switch chip.
 	 */
 	s8		rtable[DSA_MAX_SWITCHES];

 	/*
 	 * Slave mii_bus and devices for the individual ports.
 	 */
 	u32			dsa_port_mask;
 	u32			cpu_port_mask;
 	u32			enabled_port_mask;
 	u32			phys_mii_mask;
 	struct mii_bus		*slave_mii_bus;

 	/* Ageing Time limits in msecs */
 	unsigned int ageing_time_min;
 	unsigned int ageing_time_max;

 	/* devlink used to represent this switch device */
 	struct devlink		*devlink;

 	/* Number of switch port queues */
 	unsigned int		num_tx_queues;

 	/* Dynamically allocated ports, keep last */
 	size_t num_ports;
 	struct dsa_port ports[];
 };

 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
 {
 	return !!(ds->cpu_port_mask & (1 << p));
 }

 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
 {
 	return !!((ds->dsa_port_mask) & (1 << p));
 }

 static inline bool dsa_is_normal_port(struct dsa_switch *ds, int p)
 {
 	return !dsa_is_cpu_port(ds, p) && !dsa_is_dsa_port(ds, p);
 }

 static inline u8 dsa_upstream_port(struct dsa_switch *ds)
 {
 	struct dsa_switch_tree *dst = ds->dst;

 	/*
 	 * If this is the root switch (i.e. the switch that connects
 	 * to the CPU), return the cpu port number on this switch.
 	 * Else return the (DSA) port number that connects to the
 	 * switch that is one hop closer to the cpu.
 	 */
 	if (dst->cpu_dp->ds == ds)
 		return dst->cpu_dp->index;
 	else
 		return ds->rtable[dst->cpu_dp->ds->index];
 }

 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
 			      bool is_static, void *data);
 struct dsa_switch_ops {
 	/*
 	 * Legacy probing.
 	 */
 	const char	*(*probe)(struct device *dsa_dev,
 				  struct device *host_dev, int sw_addr,
 				  void **priv);

 	enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds);

 	int	(*setup)(struct dsa_switch *ds);
 	int	(*set_addr)(struct dsa_switch *ds, u8 *addr);
 	u32	(*get_phy_flags)(struct dsa_switch *ds, int port);

 	/*
 	 * Access to the switch's PHY registers.
 	 */
 	int	(*phy_read)(struct dsa_switch *ds, int port, int regnum);
 	int	(*phy_write)(struct dsa_switch *ds, int port,
 			     int regnum, u16 val);

 	/*
 	 * Link state adjustment (called from libphy)
 	 */
 	void	(*adjust_link)(struct dsa_switch *ds, int port,
 				struct phy_device *phydev);
 	void	(*fixed_link_update)(struct dsa_switch *ds, int port,
 				struct fixed_phy_status *st);

 	/*
 	 * ethtool hardware statistics.
 	 */
 	void	(*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
 	void	(*get_ethtool_stats)(struct dsa_switch *ds,
 				     int port, uint64_t *data);
 	int	(*get_sset_count)(struct dsa_switch *ds);

 	/*
 	 * ethtool Wake-on-LAN
 	 */
 	void	(*get_wol)(struct dsa_switch *ds, int port,
 			   struct ethtool_wolinfo *w);
 	int	(*set_wol)(struct dsa_switch *ds, int port,
 			   struct ethtool_wolinfo *w);

 	/*
 	 * Suspend and resume
 	 */
 	int	(*suspend)(struct dsa_switch *ds);
 	int	(*resume)(struct dsa_switch *ds);

 	/*
 	 * Port enable/disable
 	 */
 	int	(*port_enable)(struct dsa_switch *ds, int port,
 			       struct phy_device *phy);
 	void	(*port_disable)(struct dsa_switch *ds, int port,
 				struct phy_device *phy);

 	/*
 	 * Port's MAC EEE settings
 	 */
 	int	(*set_mac_eee)(struct dsa_switch *ds, int port,
 			       struct ethtool_eee *e);
 	int	(*get_mac_eee)(struct dsa_switch *ds, int port,
 			       struct ethtool_eee *e);

 	/* EEPROM access */
 	int	(*get_eeprom_len)(struct dsa_switch *ds);
 	int	(*get_eeprom)(struct dsa_switch *ds,
 			      struct ethtool_eeprom *eeprom, u8 *data);
 	int	(*set_eeprom)(struct dsa_switch *ds,
 			      struct ethtool_eeprom *eeprom, u8 *data);

 	/*
 	 * Register access.
 	 */
 	int	(*get_regs_len)(struct dsa_switch *ds, int port);
 	void	(*get_regs)(struct dsa_switch *ds, int port,
 			    struct ethtool_regs *regs, void *p);

 	/*
 	 * Bridge integration
 	 */
 	int	(*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
 	int	(*port_bridge_join)(struct dsa_switch *ds, int port,
 				    struct net_device *bridge);
 	void	(*port_bridge_leave)(struct dsa_switch *ds, int port,
 				     struct net_device *bridge);
 	void	(*port_stp_state_set)(struct dsa_switch *ds, int port,
 				      u8 state);
 	void	(*port_fast_age)(struct dsa_switch *ds, int port);

 	/*
 	 * VLAN support
 	 */
 	int	(*port_vlan_filtering)(struct dsa_switch *ds, int port,
 				       bool vlan_filtering);
 	int	(*port_vlan_prepare)(struct dsa_switch *ds, int port,
 				     const struct switchdev_obj_port_vlan *vlan,
 				     struct switchdev_trans *trans);
 	void	(*port_vlan_add)(struct dsa_switch *ds, int port,
 				 const struct switchdev_obj_port_vlan *vlan,
 				 struct switchdev_trans *trans);
 	int	(*port_vlan_del)(struct dsa_switch *ds, int port,
 				 const struct switchdev_obj_port_vlan *vlan);
 	/*
 	 * Forwarding database
 	 */
 	int	(*port_fdb_add)(struct dsa_switch *ds, int port,
 				const unsigned char *addr, u16 vid);
 	int	(*port_fdb_del)(struct dsa_switch *ds, int port,
 				const unsigned char *addr, u16 vid);
 	int	(*port_fdb_dump)(struct dsa_switch *ds, int port,
 				 dsa_fdb_dump_cb_t *cb, void *data);

 	/*
 	 * Multicast database
 	 */
 	int	(*port_mdb_prepare)(struct dsa_switch *ds, int port,
 				    const struct switchdev_obj_port_mdb *mdb,
 				    struct switchdev_trans *trans);
 	void	(*port_mdb_add)(struct dsa_switch *ds, int port,
 				const struct switchdev_obj_port_mdb *mdb,
 				struct switchdev_trans *trans);
 	int	(*port_mdb_del)(struct dsa_switch *ds, int port,
 				const struct switchdev_obj_port_mdb *mdb);
 	/*
 	 * RXNFC
 	 */
 	int	(*get_rxnfc)(struct dsa_switch *ds, int port,
 			     struct ethtool_rxnfc *nfc, u32 *rule_locs);
 	int	(*set_rxnfc)(struct dsa_switch *ds, int port,
 			     struct ethtool_rxnfc *nfc);

 	/*
 	 * TC integration
 	 */
 	int	(*port_mirror_add)(struct dsa_switch *ds, int port,
 				   struct dsa_mall_mirror_tc_entry *mirror,
 				   bool ingress);
 	void	(*port_mirror_del)(struct dsa_switch *ds, int port,
 				   struct dsa_mall_mirror_tc_entry *mirror);

 	/*
 	 * Cross-chip operations
 	 */
 	int	(*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index,
 					 int port, struct net_device *br);
 	void	(*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index,
 					  int port, struct net_device *br);
 };

 struct dsa_switch_driver {
 	struct list_head	list;
 	const struct dsa_switch_ops *ops;
 };

 /* Legacy driver registration */
 void register_switch_driver(struct dsa_switch_driver *type);
 void unregister_switch_driver(struct dsa_switch_driver *type);
 struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);

 struct net_device *dsa_dev_to_net_device(struct device *dev);

 /* Keep inline for faster access in hot path */
 static inline bool netdev_uses_dsa(struct net_device *dev)
 {
 #if IS_ENABLED(CONFIG_NET_DSA)
 	return dev->dsa_ptr && dev->dsa_ptr->rcv;
 #endif
 	return false;
 }

 struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n);
 void dsa_unregister_switch(struct dsa_switch *ds);
 int dsa_register_switch(struct dsa_switch *ds);
 #ifdef CONFIG_PM_SLEEP
 int dsa_switch_suspend(struct dsa_switch *ds);
 int dsa_switch_resume(struct dsa_switch *ds);
 #else
 static inline int dsa_switch_suspend(struct dsa_switch *ds)
 {
 	return 0;
 }
 static inline int dsa_switch_resume(struct dsa_switch *ds)
 {
 	return 0;
 }
 #endif /* CONFIG_PM_SLEEP */

 #endif
	/*
	* include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
	* Copyright (c) 2008-2009 Marvell Semiconductor
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*/

	#ifndef __LINUX_NET_DSA_H
	#define __LINUX_NET_DSA_H

	#include <linux/if.h>
	#include <linux/if_ether.h>
	#include <linux/list.h>
	#include <linux/notifier.h>
	#include <linux/timer.h>
	#include <linux/workqueue.h>
	#include <linux/of.h>
	#include <linux/ethtool.h>
	#include <net/devlink.h>
	#include <net/switchdev.h>

	struct tc_action;
	struct phy_device;
	struct fixed_phy_status;

	enum dsa_tag_protocol {
	DSA_TAG_PROTO_NONE = 0,
	DSA_TAG_PROTO_BRCM,
	DSA_TAG_PROTO_DSA,
	DSA_TAG_PROTO_EDSA,
	DSA_TAG_PROTO_KSZ,
	DSA_TAG_PROTO_LAN9303,
	DSA_TAG_PROTO_MTK,
	DSA_TAG_PROTO_QCA,
	DSA_TAG_PROTO_TRAILER,
	DSA_TAG_LAST, /* MUST BE LAST */
	};

	#define DSA_MAX_SWITCHES 4
	#define DSA_MAX_PORTS 12

	#define DSA_RTABLE_NONE -1

	struct dsa_chip_data {
	/*
	* How to access the switch configuration registers.
	*/
	struct device *host_dev;
	int sw_addr;

	/*
	* Reference to network devices
	*/
	struct device *netdev[DSA_MAX_PORTS];

	/* set to size of eeprom if supported by the switch */
	int eeprom_len;

	/* Device tree node pointer for this specific switch chip
	* used during switch setup in case additional properties
	* and resources needs to be used
	*/
	struct device_node *of_node;

	/*
	* The names of the switch's ports. Use "cpu" to
	* designate the switch port that the cpu is connected to,
	* "dsa" to indicate that this port is a DSA link to
	* another switch, NULL to indicate the port is unused,
	* or any other string to indicate this is a physical port.
	*/
	char *port_names[DSA_MAX_PORTS];
	struct device_node *port_dn[DSA_MAX_PORTS];

	/*
	* An array of which element [a] indicates which port on this
	* switch should be used to send packets to that are destined
	* for switch a. Can be NULL if there is only one switch chip.
	*/
	s8 rtable[DSA_MAX_SWITCHES];
	};

	struct dsa_platform_data {
	/*
	* Reference to a Linux network interface that connects
	* to the root switch chip of the tree.
	*/
	struct device *netdev;
	struct net_device *of_netdev;

	/*
	* Info structs describing each of the switch chips
	* connected via this network interface.
	*/
	int nr_chips;
	struct dsa_chip_data *chip;
	};

	struct packet_type;

	struct dsa_device_ops {
	struct sk_buff (xmit)(struct sk_buff skb, struct net_device dev);
	struct sk_buff (rcv)(struct sk_buff skb, struct net_device dev,
	struct packet_type *pt);
	int (flow_dissect)(const struct sk_buff skb, __be16 *proto,
	int *offset);
	};

	struct dsa_switch_tree {
	struct list_head list;

	/* Notifier chain for switch-wide events */
	struct raw_notifier_head nh;

	/* Tree identifier */
	u32 tree;

	/* Number of switches attached to this tree */
	struct kref refcount;

	/* Has this tree been applied to the hardware? */
	bool applied;

	/*
	* Configuration data for the platform device that owns
	* this dsa switch tree instance.
	*/
	struct dsa_platform_data *pd;

	/* Copy of tag_ops->rcv for faster access in hot path */
	struct sk_buff * (rcv)(struct sk_buff skb,
	struct net_device *dev,
	struct packet_type *pt);

	/*
	* The switch port to which the CPU is attached.
	*/
	struct dsa_port *cpu_dp;

	/*
	* Data for the individual switch chips.
	*/
	struct dsa_switch *ds[DSA_MAX_SWITCHES];

	/*
	* Tagging protocol operations for adding and removing an
	* encapsulation tag.
	*/
	const struct dsa_device_ops *tag_ops;
	};

	/* TC matchall action types, only mirroring for now */
	enum dsa_port_mall_action_type {
	DSA_PORT_MALL_MIRROR,
	};

	/* TC mirroring entry */
	struct dsa_mall_mirror_tc_entry {
	u8 to_local_port;
	bool ingress;
	};

	/* TC matchall entry */
	struct dsa_mall_tc_entry {
	struct list_head list;
	unsigned long cookie;
	enum dsa_port_mall_action_type type;
	union {
	struct dsa_mall_mirror_tc_entry mirror;
	};
	};


	struct dsa_port {
	struct dsa_switch *ds;
	unsigned int index;
	const char *name;
	struct dsa_port *cpu_dp;
	struct net_device *netdev;
	struct device_node *dn;
	unsigned int ageing_time;
	u8 stp_state;
	struct net_device *bridge_dev;
	struct devlink_port devlink_port;
	/*
	* Original copy of the master netdev ethtool_ops
	*/
	struct ethtool_ops ethtool_ops;
	const struct ethtool_ops *orig_ethtool_ops;
	};

	struct dsa_switch {
	struct device *dev;

	/*
	* Parent switch tree, and switch index.
	*/
	struct dsa_switch_tree *dst;
	int index;

	/* Listener for switch fabric events */
	struct notifier_block nb;

	/*
	* Give the switch driver somewhere to hang its private data
	* structure.
	*/
	void *priv;

	/*
	* Configuration data for this switch.
	*/
	struct dsa_chip_data *cd;

	/*
	* The switch operations.
	*/
	const struct dsa_switch_ops *ops;

	/*
	* An array of which element [a] indicates which port on this
	* switch should be used to send packets to that are destined
	* for switch a. Can be NULL if there is only one switch chip.
	*/
	s8 rtable[DSA_MAX_SWITCHES];

	/*
	* Slave mii_bus and devices for the individual ports.
	*/
	u32 dsa_port_mask;
	u32 cpu_port_mask;
	u32 enabled_port_mask;
	u32 phys_mii_mask;
	struct mii_bus *slave_mii_bus;

	/* Ageing Time limits in msecs */
	unsigned int ageing_time_min;
	unsigned int ageing_time_max;

	/* devlink used to represent this switch device */
	struct devlink *devlink;

	/* Number of switch port queues */
	unsigned int num_tx_queues;

	/* Dynamically allocated ports, keep last */
	size_t num_ports;
	struct dsa_port ports[];
	};

	static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
	{
	return !!(ds->cpu_port_mask & (1 << p));
	}

	static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
	{
	return !!((ds->dsa_port_mask) & (1 << p));
	}

	static inline bool dsa_is_normal_port(struct dsa_switch *ds, int p)
	{
	return !dsa_is_cpu_port(ds, p) && !dsa_is_dsa_port(ds, p);
	}

	static inline u8 dsa_upstream_port(struct dsa_switch *ds)
	{
	struct dsa_switch_tree *dst = ds->dst;

	/*
	* If this is the root switch (i.e. the switch that connects
	* to the CPU), return the cpu port number on this switch.
	* Else return the (DSA) port number that connects to the
	* switch that is one hop closer to the cpu.
	*/
	if (dst->cpu_dp->ds == ds)
	return dst->cpu_dp->index;
	else
	return ds->rtable[dst->cpu_dp->ds->index];
	}

	typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
	bool is_static, void *data);
	struct dsa_switch_ops {
	/*
	* Legacy probing.
	*/
	const char (probe)(struct device *dsa_dev,
	struct device *host_dev, int sw_addr,
	void **priv);

	enum dsa_tag_protocol (get_tag_protocol)(struct dsa_switch ds);

	int (setup)(struct dsa_switch ds);
	int (set_addr)(struct dsa_switch ds, u8 *addr);
	u32 (get_phy_flags)(struct dsa_switch ds, int port);

	/*
	* Access to the switch's PHY registers.
	*/
	int (phy_read)(struct dsa_switch ds, int port, int regnum);
	int (phy_write)(struct dsa_switch ds, int port,
	int regnum, u16 val);

	/*
	* Link state adjustment (called from libphy)
	*/
	void (adjust_link)(struct dsa_switch ds, int port,
	struct phy_device *phydev);
	void (fixed_link_update)(struct dsa_switch ds, int port,
	struct fixed_phy_status *st);

	/*
	* ethtool hardware statistics.
	*/
	void (get_strings)(struct dsa_switch ds, int port, uint8_t *data);
	void (get_ethtool_stats)(struct dsa_switch ds,
	int port, uint64_t *data);
	int (get_sset_count)(struct dsa_switch ds);

	/*
	* ethtool Wake-on-LAN
	*/
	void (get_wol)(struct dsa_switch ds, int port,
	struct ethtool_wolinfo *w);
	int (set_wol)(struct dsa_switch ds, int port,
	struct ethtool_wolinfo *w);

	/*
	* Suspend and resume
	*/
	int (suspend)(struct dsa_switch ds);
	int (resume)(struct dsa_switch ds);

	/*
	* Port enable/disable
	*/
	int (port_enable)(struct dsa_switch ds, int port,
	struct phy_device *phy);
	void (port_disable)(struct dsa_switch ds, int port,
	struct phy_device *phy);

	/*
	* Port's MAC EEE settings
	*/
	int (set_mac_eee)(struct dsa_switch ds, int port,
	struct ethtool_eee *e);
	int (get_mac_eee)(struct dsa_switch ds, int port,
	struct ethtool_eee *e);

	/* EEPROM access */
	int (get_eeprom_len)(struct dsa_switch ds);
	int (get_eeprom)(struct dsa_switch ds,
	struct ethtool_eeprom eeprom, u8 data);
	int (set_eeprom)(struct dsa_switch ds,
	struct ethtool_eeprom eeprom, u8 data);

	/*
	* Register access.
	*/
	int (get_regs_len)(struct dsa_switch ds, int port);
	void (get_regs)(struct dsa_switch ds, int port,
	struct ethtool_regs regs, void p);

	/*
	* Bridge integration
	*/
	int (set_ageing_time)(struct dsa_switch ds, unsigned int msecs);
	int (port_bridge_join)(struct dsa_switch ds, int port,
	struct net_device *bridge);
	void (port_bridge_leave)(struct dsa_switch ds, int port,
	struct net_device *bridge);
	void (port_stp_state_set)(struct dsa_switch ds, int port,
	u8 state);
	void (port_fast_age)(struct dsa_switch ds, int port);

	/*
	* VLAN support
	*/
	int (port_vlan_filtering)(struct dsa_switch ds, int port,
	bool vlan_filtering);
	int (port_vlan_prepare)(struct dsa_switch ds, int port,
	const struct switchdev_obj_port_vlan *vlan,
	struct switchdev_trans *trans);
	void (port_vlan_add)(struct dsa_switch ds, int port,
	const struct switchdev_obj_port_vlan *vlan,
	struct switchdev_trans *trans);
	int (port_vlan_del)(struct dsa_switch ds, int port,
	const struct switchdev_obj_port_vlan *vlan);
	/*
	* Forwarding database
	*/
	int (port_fdb_add)(struct dsa_switch ds, int port,
	const unsigned char *addr, u16 vid);
	int (port_fdb_del)(struct dsa_switch ds, int port,
	const unsigned char *addr, u16 vid);
	int (port_fdb_dump)(struct dsa_switch ds, int port,
	dsa_fdb_dump_cb_t cb, void data);

	/*
	* Multicast database
	*/
	int (port_mdb_prepare)(struct dsa_switch ds, int port,
	const struct switchdev_obj_port_mdb *mdb,
	struct switchdev_trans *trans);
	void (port_mdb_add)(struct dsa_switch ds, int port,
	const struct switchdev_obj_port_mdb *mdb,
	struct switchdev_trans *trans);
	int (port_mdb_del)(struct dsa_switch ds, int port,
	const struct switchdev_obj_port_mdb *mdb);
	/*
	* RXNFC
	*/
	int (get_rxnfc)(struct dsa_switch ds, int port,
	struct ethtool_rxnfc nfc, u32 rule_locs);
	int (set_rxnfc)(struct dsa_switch ds, int port,
	struct ethtool_rxnfc *nfc);

	/*
	* TC integration
	*/
	int (port_mirror_add)(struct dsa_switch ds, int port,
	struct dsa_mall_mirror_tc_entry *mirror,
	bool ingress);
	void (port_mirror_del)(struct dsa_switch ds, int port,
	struct dsa_mall_mirror_tc_entry *mirror);

	/*
	* Cross-chip operations
	*/
	int (crosschip_bridge_join)(struct dsa_switch ds, int sw_index,
	int port, struct net_device *br);
	void (crosschip_bridge_leave)(struct dsa_switch ds, int sw_index,
	int port, struct net_device *br);
	};

	struct dsa_switch_driver {
	struct list_head list;
	const struct dsa_switch_ops *ops;
	};

	/* Legacy driver registration */
	void register_switch_driver(struct dsa_switch_driver *type);
	void unregister_switch_driver(struct dsa_switch_driver *type);
	struct mii_bus dsa_host_dev_to_mii_bus(struct device dev);

	struct net_device dsa_dev_to_net_device(struct device dev);

	/* Keep inline for faster access in hot path */
	static inline bool netdev_uses_dsa(struct net_device *dev)
	{
	#if IS_ENABLED(CONFIG_NET_DSA)
	return dev->dsa_ptr && dev->dsa_ptr->rcv;
	#endif
	return false;
	}

	struct dsa_switch dsa_switch_alloc(struct device dev, size_t n);
	void dsa_unregister_switch(struct dsa_switch *ds);
	int dsa_register_switch(struct dsa_switch *ds);
	#ifdef CONFIG_PM_SLEEP
	int dsa_switch_suspend(struct dsa_switch *ds);
	int dsa_switch_resume(struct dsa_switch *ds);
	#else
	static inline int dsa_switch_suspend(struct dsa_switch *ds)
	{
	return 0;
	}
	static inline int dsa_switch_resume(struct dsa_switch *ds)
	{
	return 0;
	}
	#endif /* CONFIG_PM_SLEEP */

	#endif