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Diffstat (limited to 'include/net/switchdev.h')
| -rw-r--r-- | include/net/switchdev.h | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/include/net/switchdev.h b/include/net/switchdev.h new file mode 100644 index 000000000..d574ce63b --- /dev/null +++ b/include/net/switchdev.h @@ -0,0 +1,247 @@ +/* + * 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_PORT_BRIDGE_FLAGS_SUPPORT, + SWITCHDEV_ATTR_ID_PORT_MROUTER, + SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME, + SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, + SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, + SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, +}; + +struct switchdev_attr { + struct net_device *orig_dev; + enum switchdev_attr_id id; + u32 flags; + void *complete_priv; + void (*complete)(struct net_device *dev, int err, void *priv); + union { + struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */ + u8 stp_state; /* PORT_STP_STATE */ + unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */ + unsigned long brport_flags_support; /* PORT_BRIDGE_FLAGS_SUPPORT */ + bool mrouter; /* PORT_MROUTER */ + clock_t ageing_time; /* BRIDGE_AGEING_TIME */ + bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ + bool mc_disabled; /* MC_DISABLED */ + } u; +}; + +enum switchdev_obj_id { + SWITCHDEV_OBJ_ID_UNDEFINED, + SWITCHDEV_OBJ_ID_PORT_VLAN, + SWITCHDEV_OBJ_ID_PORT_MDB, + SWITCHDEV_OBJ_ID_HOST_MDB, +}; + +struct switchdev_obj { + struct net_device *orig_dev; + enum switchdev_obj_id id; + u32 flags; + void *complete_priv; + void (*complete)(struct net_device *dev, int err, void *priv); +}; + +/* 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_PORT_MDB */ +struct switchdev_obj_port_mdb { + struct switchdev_obj obj; + unsigned char addr[ETH_ALEN]; + u16 vid; +}; + +#define SWITCHDEV_OBJ_PORT_MDB(obj) \ + container_of(obj, struct switchdev_obj_port_mdb, 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_*). + */ +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); +}; + +enum switchdev_notifier_type { + SWITCHDEV_FDB_ADD_TO_BRIDGE = 1, + SWITCHDEV_FDB_DEL_TO_BRIDGE, + SWITCHDEV_FDB_ADD_TO_DEVICE, + SWITCHDEV_FDB_DEL_TO_DEVICE, + SWITCHDEV_FDB_OFFLOADED, +}; + +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; + bool added_by_user; +}; + +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 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); +void switchdev_port_fwd_mark_set(struct net_device *dev, + struct net_device *group_dev, + bool joining); + +bool switchdev_port_same_parent_id(struct net_device *a, + struct net_device *b); + +#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops)) +#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 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 bool switchdev_port_same_parent_id(struct net_device *a, + struct net_device *b) +{ + return false; +} + +#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0) + +#endif + +#endif /* _LINUX_SWITCHDEV_H_ */ |