/* * include/net/devlink.h - Network physical device Netlink interface * Copyright (c) 2016 Mellanox Technologies. All rights reserved. * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> * * 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 _NET_DEVLINK_H_#define _NET_DEVLINK_H_ #include <linux/device.h>#include <linux/slab.h>#include <linux/gfp.h>#include <linux/list.h>#include <linux/netdevice.h>#include <net/net_namespace.h>#include <uapi/linux/devlink.h> struct devlink_ops; struct devlink {	struct list_head list;	struct list_head port_list;	const struct devlink_ops *ops;	struct device *dev;	possible_net_t _net;	char priv[0] __aligned(NETDEV_ALIGN);}; struct devlink_port {	struct list_head list;	struct devlink *devlink;	unsigned index;	bool registered;	enum devlink_port_type type;	enum devlink_port_type desired_type;	void *type_dev;	bool split;	u32 split_group;}; struct devlink_ops {	size_t priv_size;	int (*port_type_set)(struct devlink_port *devlink_port,			     enum devlink_port_type port_type);	int (*port_split)(struct devlink *devlink, unsigned int port_index,			  unsigned int count);	int (*port_unsplit)(struct devlink *devlink, unsigned int port_index);}; static inline void *devlink_priv(struct devlink *devlink){	BUG_ON(!devlink);	return &devlink->priv;} static inline struct devlink *priv_to_devlink(void *priv){	BUG_ON(!priv);	return container_of(priv, struct devlink, priv);} struct ib_device; #if IS_ENABLED(CONFIG_NET_DEVLINK) struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);int devlink_register(struct devlink *devlink, struct device *dev);void devlink_unregister(struct devlink *devlink);void devlink_free(struct devlink *devlink);int devlink_port_register(struct devlink *devlink,			  struct devlink_port *devlink_port,			  unsigned int port_index);void devlink_port_unregister(struct devlink_port *devlink_port);void devlink_port_type_eth_set(struct devlink_port *devlink_port,			       struct net_device *netdev);void devlink_port_type_ib_set(struct devlink_port *devlink_port,			      struct ib_device *ibdev);void devlink_port_type_clear(struct devlink_port *devlink_port);void devlink_port_split_set(struct devlink_port *devlink_port,			    u32 split_group); #else static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,					    size_t priv_size){	return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL);} static inline int devlink_register(struct devlink *devlink, struct device *dev){	return 0;} static inline void devlink_unregister(struct devlink *devlink){} static inline void devlink_free(struct devlink *devlink){	kfree(devlink);} static inline int devlink_port_register(struct devlink *devlink,					struct devlink_port *devlink_port,					unsigned int port_index){	return 0;} static inline void devlink_port_unregister(struct devlink_port *devlink_port){} static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port,					     struct net_device *netdev){} static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port,					    struct ib_device *ibdev){} static inline void devlink_port_type_clear(struct devlink_port *devlink_port){} static inline void devlink_port_split_set(struct devlink_port *devlink_port,					  u32 split_group){} #endif #endif /* _NET_DEVLINK_H_ */