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/*
* include/net/switchdev.h - Switch device API
* Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
* Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.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 _LINUX_SWITCHDEV_H_
#define _LINUX_SWITCHDEV_H_
#include <linux/netdevice.h>
#include <linux/notifier.h>
#include <linux/list.h>
#include <net/ip_fib.h>
#define SWITCHDEV_F_NO_RECURSE BIT(0)
#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
#define SWITCHDEV_F_DEFER BIT(2)
struct switchdev_trans_item {
struct list_head list;
void *data;
void (*destructor)(const void *data);
};
struct switchdev_trans {
struct list_head item_list;
bool ph_prepare;
};
static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
{
return trans && trans->ph_prepare;
}
static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
{
return trans && !trans->ph_prepare;
}
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_BRIDGE_AGEING_TIME,
};
struct switchdev_attr {
enum switchdev_attr_id id;
u32 flags;
union {
struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
u8 stp_state; /* PORT_STP_STATE */
unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
u32 ageing_time; /* BRIDGE_AGEING_TIME */
} u;
};
enum switchdev_obj_id {
SWITCHDEV_OBJ_ID_UNDEFINED,
SWITCHDEV_OBJ_ID_PORT_VLAN,
SWITCHDEV_OBJ_ID_IPV4_FIB,
SWITCHDEV_OBJ_ID_PORT_FDB,
};
struct switchdev_obj {
enum switchdev_obj_id id;
u32 flags;
};
/* SWITCHDEV_OBJ_ID_PORT_VLAN */
struct switchdev_obj_port_vlan {
struct switchdev_obj obj;
u16 flags;
u16 vid_begin;
u16 vid_end;
};
#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
container_of(obj, struct switchdev_obj_port_vlan, obj)
/* SWITCHDEV_OBJ_ID_IPV4_FIB */
struct switchdev_obj_ipv4_fib {
struct switchdev_obj obj;
u32 dst;
int dst_len;
struct fib_info *fi;
u8 tos;
u8 type;
u32 nlflags;
u32 tb_id;
};
#define SWITCHDEV_OBJ_IPV4_FIB(obj) \
container_of(obj, struct switchdev_obj_ipv4_fib, obj)
/* SWITCHDEV_OBJ_ID_PORT_FDB */
struct switchdev_obj_port_fdb {
struct switchdev_obj obj;
unsigned char addr[ETH_ALEN];
u16 vid;
u16 ndm_state;
};
#define SWITCHDEV_OBJ_PORT_FDB(obj) \
container_of(obj, struct switchdev_obj_port_fdb, obj)
void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
void *data, void (*destructor)(void const *),
struct switchdev_trans_item *tritem);
void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
/**
* struct switchdev_ops - switchdev operations
*
* @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
*
* @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
*
* @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
*
* @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
*
* @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
*/
struct switchdev_ops {
int (*switchdev_port_attr_get)(struct net_device *dev,
struct switchdev_attr *attr);
int (*switchdev_port_attr_set)(struct net_device *dev,
const struct switchdev_attr *attr,
struct switchdev_trans *trans);
int (*switchdev_port_obj_add)(struct net_device *dev,
const struct switchdev_obj *obj,
struct switchdev_trans *trans);
int (*switchdev_port_obj_del)(struct net_device *dev,
const struct switchdev_obj *obj);
int (*switchdev_port_obj_dump)(struct net_device *dev,
struct switchdev_obj *obj,
switchdev_obj_dump_cb_t *cb);
};
enum switchdev_notifier_type {
SWITCHDEV_FDB_ADD = 1,
SWITCHDEV_FDB_DEL,
};
struct switchdev_notifier_info {
struct net_device *dev;
};
struct switchdev_notifier_fdb_info {
struct switchdev_notifier_info info; /* must be first */
const unsigned char *addr;
u16 vid;
};
static inline struct net_device *
switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
{
return info->dev;
}
#ifdef CONFIG_NET_SWITCHDEV
void switchdev_deferred_process(void);
int switchdev_port_attr_get(struct net_device *dev,
struct switchdev_attr *attr);
int switchdev_port_attr_set(struct net_device *dev,
const struct switchdev_attr *attr);
int switchdev_port_obj_add(struct net_device *dev,
const struct switchdev_obj *obj);
int switchdev_port_obj_del(struct net_device *dev,
const struct switchdev_obj *obj);
int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
switchdev_obj_dump_cb_t *cb);
int register_switchdev_notifier(struct notifier_block *nb);
int unregister_switchdev_notifier(struct notifier_block *nb);
int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
struct switchdev_notifier_info *info);
int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
struct net_device *dev, u32 filter_mask,
int nlflags);
int switchdev_port_bridge_setlink(struct net_device *dev,
struct nlmsghdr *nlh, u16 flags);
int switchdev_port_bridge_dellink(struct net_device *dev,
struct nlmsghdr *nlh, u16 flags);
int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
u8 tos, u8 type, u32 nlflags, u32 tb_id);
int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
u8 tos, u8 type, u32 tb_id);
void switchdev_fib_ipv4_abort(struct fib_info *fi);
int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev, const unsigned char *addr,
u16 vid, u16 nlm_flags);
int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev, const unsigned char *addr,
u16 vid);
int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
struct net_device *dev,
struct net_device *filter_dev, int idx);
void switchdev_port_fwd_mark_set(struct net_device *dev,
struct net_device *group_dev,
bool joining);
#else
static inline void switchdev_deferred_process(void)
{
}
static inline int switchdev_port_attr_get(struct net_device *dev,
struct switchdev_attr *attr)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_attr_set(struct net_device *dev,
const struct switchdev_attr *attr)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_obj_add(struct net_device *dev,
const struct switchdev_obj *obj)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_obj_del(struct net_device *dev,
const struct switchdev_obj *obj)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_obj_dump(struct net_device *dev,
const struct switchdev_obj *obj,
switchdev_obj_dump_cb_t *cb)
{
return -EOPNOTSUPP;
}
static inline int register_switchdev_notifier(struct notifier_block *nb)
{
return 0;
}
static inline int unregister_switchdev_notifier(struct notifier_block *nb)
{
return 0;
}
static inline int call_switchdev_notifiers(unsigned long val,
struct net_device *dev,
struct switchdev_notifier_info *info)
{
return NOTIFY_DONE;
}
static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
u32 seq, struct net_device *dev,
u32 filter_mask, int nlflags)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_bridge_setlink(struct net_device *dev,
struct nlmsghdr *nlh,
u16 flags)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_bridge_dellink(struct net_device *dev,
struct nlmsghdr *nlh,
u16 flags)
{
return -EOPNOTSUPP;
}
static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
struct fib_info *fi,
u8 tos, u8 type,
u32 nlflags, u32 tb_id)
{
return 0;
}
static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
struct fib_info *fi,
u8 tos, u8 type, u32 tb_id)
{
return 0;
}
static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
{
}
static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr,
u16 vid, u16 nlm_flags)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid)
{
return -EOPNOTSUPP;
}
static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
struct netlink_callback *cb,
struct net_device *dev,
struct net_device *filter_dev,
int idx)
{
return idx;
}
static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
struct net_device *group_dev,
bool joining)
{
}
#endif
#endif /* _LINUX_SWITCHDEV_H_ */
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