329 lines
8.8 KiB
C
329 lines
8.8 KiB
C
/*
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* include/net/switchdev.h - Switch device API
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* Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
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* Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _LINUX_SWITCHDEV_H_
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#define _LINUX_SWITCHDEV_H_
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#include <linux/netdevice.h>
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#include <linux/notifier.h>
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#include <linux/list.h>
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#include <net/ip_fib.h>
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#define SWITCHDEV_F_NO_RECURSE BIT(0)
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#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
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#define SWITCHDEV_F_DEFER BIT(2)
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struct switchdev_trans_item {
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struct list_head list;
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void *data;
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void (*destructor)(const void *data);
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};
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struct switchdev_trans {
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struct list_head item_list;
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bool ph_prepare;
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};
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static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
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{
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return trans && trans->ph_prepare;
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}
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static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
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{
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return trans && !trans->ph_prepare;
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}
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enum switchdev_attr_id {
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SWITCHDEV_ATTR_ID_UNDEFINED,
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SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
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SWITCHDEV_ATTR_ID_PORT_STP_STATE,
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SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
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SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT,
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SWITCHDEV_ATTR_ID_PORT_MROUTER,
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SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
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SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
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SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
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SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
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};
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struct switchdev_attr {
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struct net_device *orig_dev;
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enum switchdev_attr_id id;
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u32 flags;
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void *complete_priv;
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void (*complete)(struct net_device *dev, int err, void *priv);
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union {
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struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
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u8 stp_state; /* PORT_STP_STATE */
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unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
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unsigned long brport_flags_support; /* PORT_BRIDGE_FLAGS_SUPPORT */
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bool mrouter; /* PORT_MROUTER */
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clock_t ageing_time; /* BRIDGE_AGEING_TIME */
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bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
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bool mc_disabled; /* MC_DISABLED */
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} u;
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};
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enum switchdev_obj_id {
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SWITCHDEV_OBJ_ID_UNDEFINED,
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SWITCHDEV_OBJ_ID_PORT_VLAN,
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SWITCHDEV_OBJ_ID_PORT_MDB,
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SWITCHDEV_OBJ_ID_HOST_MDB,
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};
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struct switchdev_obj {
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struct net_device *orig_dev;
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enum switchdev_obj_id id;
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u32 flags;
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void *complete_priv;
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void (*complete)(struct net_device *dev, int err, void *priv);
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};
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/* SWITCHDEV_OBJ_ID_PORT_VLAN */
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struct switchdev_obj_port_vlan {
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struct switchdev_obj obj;
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u16 flags;
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u16 vid_begin;
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u16 vid_end;
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};
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#define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \
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container_of((OBJ), struct switchdev_obj_port_vlan, obj)
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/* SWITCHDEV_OBJ_ID_PORT_MDB */
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struct switchdev_obj_port_mdb {
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struct switchdev_obj obj;
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unsigned char addr[ETH_ALEN];
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u16 vid;
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};
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#define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
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container_of((OBJ), struct switchdev_obj_port_mdb, obj)
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void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
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void *data, void (*destructor)(void const *),
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struct switchdev_trans_item *tritem);
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void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
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typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
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/**
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* struct switchdev_ops - switchdev operations
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*
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* @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
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*
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* @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
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*/
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struct switchdev_ops {
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int (*switchdev_port_attr_get)(struct net_device *dev,
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struct switchdev_attr *attr);
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int (*switchdev_port_attr_set)(struct net_device *dev,
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const struct switchdev_attr *attr,
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struct switchdev_trans *trans);
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};
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enum switchdev_notifier_type {
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SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
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SWITCHDEV_FDB_DEL_TO_BRIDGE,
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SWITCHDEV_FDB_ADD_TO_DEVICE,
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SWITCHDEV_FDB_DEL_TO_DEVICE,
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SWITCHDEV_FDB_OFFLOADED,
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SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
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SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
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SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
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SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
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SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
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SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
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SWITCHDEV_VXLAN_FDB_OFFLOADED,
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};
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struct switchdev_notifier_info {
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struct net_device *dev;
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struct netlink_ext_ack *extack;
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};
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struct switchdev_notifier_fdb_info {
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struct switchdev_notifier_info info; /* must be first */
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const unsigned char *addr;
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u16 vid;
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u8 added_by_user:1,
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offloaded:1;
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};
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struct switchdev_notifier_port_obj_info {
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struct switchdev_notifier_info info; /* must be first */
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const struct switchdev_obj *obj;
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struct switchdev_trans *trans;
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bool handled;
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};
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static inline struct net_device *
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switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
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{
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return info->dev;
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}
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static inline struct netlink_ext_ack *
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switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
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{
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return info->extack;
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}
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#ifdef CONFIG_NET_SWITCHDEV
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void switchdev_deferred_process(void);
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int switchdev_port_attr_get(struct net_device *dev,
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struct switchdev_attr *attr);
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int switchdev_port_attr_set(struct net_device *dev,
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const struct switchdev_attr *attr);
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int switchdev_port_obj_add(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct netlink_ext_ack *extack);
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int switchdev_port_obj_del(struct net_device *dev,
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const struct switchdev_obj *obj);
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int register_switchdev_notifier(struct notifier_block *nb);
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int unregister_switchdev_notifier(struct notifier_block *nb);
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int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
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struct switchdev_notifier_info *info);
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int register_switchdev_blocking_notifier(struct notifier_block *nb);
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int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
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int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
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struct switchdev_notifier_info *info,
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struct netlink_ext_ack *extack);
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void switchdev_port_fwd_mark_set(struct net_device *dev,
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struct net_device *group_dev,
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bool joining);
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bool switchdev_port_same_parent_id(struct net_device *a,
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struct net_device *b);
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int switchdev_handle_port_obj_add(struct net_device *dev,
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struct switchdev_notifier_port_obj_info *port_obj_info,
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bool (*check_cb)(const struct net_device *dev),
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int (*add_cb)(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct switchdev_trans *trans,
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struct netlink_ext_ack *extack));
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int switchdev_handle_port_obj_del(struct net_device *dev,
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struct switchdev_notifier_port_obj_info *port_obj_info,
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bool (*check_cb)(const struct net_device *dev),
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int (*del_cb)(struct net_device *dev,
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const struct switchdev_obj *obj));
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#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops))
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#else
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static inline void switchdev_deferred_process(void)
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{
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}
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static inline int switchdev_port_attr_get(struct net_device *dev,
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struct switchdev_attr *attr)
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{
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return -EOPNOTSUPP;
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}
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static inline int switchdev_port_attr_set(struct net_device *dev,
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const struct switchdev_attr *attr)
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{
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return -EOPNOTSUPP;
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}
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static inline int switchdev_port_obj_add(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct netlink_ext_ack *extack)
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{
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return -EOPNOTSUPP;
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}
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static inline int switchdev_port_obj_del(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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return -EOPNOTSUPP;
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}
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static inline int register_switchdev_notifier(struct notifier_block *nb)
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{
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return 0;
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}
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static inline int unregister_switchdev_notifier(struct notifier_block *nb)
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{
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return 0;
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}
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static inline int call_switchdev_notifiers(unsigned long val,
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struct net_device *dev,
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struct switchdev_notifier_info *info)
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{
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return NOTIFY_DONE;
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}
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static inline int
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register_switchdev_blocking_notifier(struct notifier_block *nb)
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{
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return 0;
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}
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static inline int
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unregister_switchdev_blocking_notifier(struct notifier_block *nb)
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{
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return 0;
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}
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static inline int
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call_switchdev_blocking_notifiers(unsigned long val,
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struct net_device *dev,
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struct switchdev_notifier_info *info,
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struct netlink_ext_ack *extack)
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{
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return NOTIFY_DONE;
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}
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static inline bool switchdev_port_same_parent_id(struct net_device *a,
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struct net_device *b)
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{
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return false;
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}
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static inline int
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switchdev_handle_port_obj_add(struct net_device *dev,
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struct switchdev_notifier_port_obj_info *port_obj_info,
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bool (*check_cb)(const struct net_device *dev),
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int (*add_cb)(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct switchdev_trans *trans,
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struct netlink_ext_ack *extack))
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{
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return 0;
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}
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static inline int
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switchdev_handle_port_obj_del(struct net_device *dev,
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struct switchdev_notifier_port_obj_info *port_obj_info,
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bool (*check_cb)(const struct net_device *dev),
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int (*del_cb)(struct net_device *dev,
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const struct switchdev_obj *obj))
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{
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return 0;
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}
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#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0)
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#endif
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#endif /* _LINUX_SWITCHDEV_H_ */
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