/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * net/dsa/dsa_priv.h - Hardware switch handling * Copyright (c) 2008-2009 Marvell Semiconductor */ #ifndef __DSA_PRIV_H #define __DSA_PRIV_H #include #include #include #include #include #include enum { DSA_NOTIFIER_AGEING_TIME, DSA_NOTIFIER_BRIDGE_JOIN, DSA_NOTIFIER_BRIDGE_LEAVE, DSA_NOTIFIER_FDB_ADD, DSA_NOTIFIER_FDB_DEL, DSA_NOTIFIER_MDB_ADD, DSA_NOTIFIER_MDB_DEL, DSA_NOTIFIER_VLAN_ADD, DSA_NOTIFIER_VLAN_DEL, DSA_NOTIFIER_MTU, }; /* DSA_NOTIFIER_AGEING_TIME */ struct dsa_notifier_ageing_time_info { struct switchdev_trans *trans; unsigned int ageing_time; }; /* DSA_NOTIFIER_BRIDGE_* */ struct dsa_notifier_bridge_info { struct net_device *br; int tree_index; int sw_index; int port; }; /* DSA_NOTIFIER_FDB_* */ struct dsa_notifier_fdb_info { int sw_index; int port; const unsigned char *addr; u16 vid; }; /* DSA_NOTIFIER_MDB_* */ struct dsa_notifier_mdb_info { const struct switchdev_obj_port_mdb *mdb; struct switchdev_trans *trans; int sw_index; int port; }; /* DSA_NOTIFIER_VLAN_* */ struct dsa_notifier_vlan_info { const struct switchdev_obj_port_vlan *vlan; struct switchdev_trans *trans; int sw_index; int port; }; /* DSA_NOTIFIER_MTU */ struct dsa_notifier_mtu_info { bool propagate_upstream; int sw_index; int port; int mtu; }; struct dsa_switchdev_event_work { struct dsa_switch *ds; int port; struct work_struct work; unsigned long event; /* Specific for SWITCHDEV_FDB_ADD_TO_DEVICE and * SWITCHDEV_FDB_DEL_TO_DEVICE */ unsigned char addr[ETH_ALEN]; u16 vid; }; struct dsa_slave_priv { /* Copy of CPU port xmit for faster access in slave transmit hot path */ struct sk_buff * (*xmit)(struct sk_buff *skb, struct net_device *dev); struct gro_cells gcells; /* DSA port data, such as switch, port index, etc. */ struct dsa_port *dp; #ifdef CONFIG_NET_POLL_CONTROLLER struct netpoll *netpoll; #endif /* TC context */ struct list_head mall_tc_list; }; /* dsa.c */ const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol); void dsa_tag_driver_put(const struct dsa_device_ops *ops); bool dsa_schedule_work(struct work_struct *work); const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops); int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid, u16 flags, struct netlink_ext_ack *extack); int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid); /* master.c */ int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp); void dsa_master_teardown(struct net_device *dev); static inline struct net_device *dsa_master_find_slave(struct net_device *dev, int device, int port) { struct dsa_port *cpu_dp = dev->dsa_ptr; struct dsa_switch_tree *dst = cpu_dp->dst; struct dsa_port *dp; list_for_each_entry(dp, &dst->ports, list) if (dp->ds->index == device && dp->index == port && dp->type == DSA_PORT_TYPE_USER) return dp->slave; return NULL; } /* port.c */ int dsa_port_set_state(struct dsa_port *dp, u8 state, struct switchdev_trans *trans); int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy); int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy); void dsa_port_disable_rt(struct dsa_port *dp); void dsa_port_disable(struct dsa_port *dp); int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br); void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br); int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering, struct switchdev_trans *trans); bool dsa_port_skip_vlan_configuration(struct dsa_port *dp); int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock, struct switchdev_trans *trans); int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu, bool propagate_upstream); int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, u16 vid); int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, u16 vid); int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data); int dsa_port_mdb_add(const struct dsa_port *dp, const struct switchdev_obj_port_mdb *mdb, struct switchdev_trans *trans); int dsa_port_mdb_del(const struct dsa_port *dp, const struct switchdev_obj_port_mdb *mdb); int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags, struct switchdev_trans *trans); int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags, struct switchdev_trans *trans); int dsa_port_mrouter(struct dsa_port *dp, bool mrouter, struct switchdev_trans *trans); int dsa_port_vlan_add(struct dsa_port *dp, const struct switchdev_obj_port_vlan *vlan, struct switchdev_trans *trans); int dsa_port_vlan_del(struct dsa_port *dp, const struct switchdev_obj_port_vlan *vlan); int dsa_port_link_register_of(struct dsa_port *dp); void dsa_port_link_unregister_of(struct dsa_port *dp); extern const struct phylink_mac_ops dsa_port_phylink_mac_ops; /* slave.c */ extern const struct dsa_device_ops notag_netdev_ops; void dsa_slave_mii_bus_init(struct dsa_switch *ds); int dsa_slave_create(struct dsa_port *dp); void dsa_slave_destroy(struct net_device *slave_dev); int dsa_slave_suspend(struct net_device *slave_dev); int dsa_slave_resume(struct net_device *slave_dev); int dsa_slave_register_notifier(void); void dsa_slave_unregister_notifier(void); static inline struct dsa_port *dsa_slave_to_port(const struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); return p->dp; } static inline struct net_device * dsa_slave_to_master(const struct net_device *dev) { struct dsa_port *dp = dsa_slave_to_port(dev); return dp->cpu_dp->master; } /* If under a bridge with vlan_filtering=0, make sure to send pvid-tagged * frames as untagged, since the bridge will not untag them. */ static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb) { struct dsa_port *dp = dsa_slave_to_port(skb->dev); struct net_device *br = dp->bridge_dev; struct net_device *dev = skb->dev; struct net_device *upper_dev; u16 vid, pvid, proto; int err; if (!br || br_vlan_enabled(br)) return skb; err = br_vlan_get_proto(br, &proto); if (err) return skb; /* Move VLAN tag from data to hwaccel */ if (!skb_vlan_tag_present(skb) && skb->protocol == htons(proto)) { skb = skb_vlan_untag(skb); if (!skb) return NULL; } if (!skb_vlan_tag_present(skb)) return skb; vid = skb_vlan_tag_get_id(skb); /* We already run under an RCU read-side critical section since * we are called from netif_receive_skb_list_internal(). */ err = br_vlan_get_pvid_rcu(dev, &pvid); if (err) return skb; if (vid != pvid) return skb; /* The sad part about attempting to untag from DSA is that we * don't know, unless we check, if the skb will end up in * the bridge's data path - br_allowed_ingress() - or not. * For example, there might be an 8021q upper for the * default_pvid of the bridge, which will steal VLAN-tagged traffic * from the bridge's data path. This is a configuration that DSA * supports because vlan_filtering is 0. In that case, we should * definitely keep the tag, to make sure it keeps working. */ upper_dev = __vlan_find_dev_deep_rcu(br, htons(proto), vid); if (upper_dev) return skb; __vlan_hwaccel_clear_tag(skb); return skb; } /* switch.c */ int dsa_switch_register_notifier(struct dsa_switch *ds); void dsa_switch_unregister_notifier(struct dsa_switch *ds); /* dsa2.c */ extern struct list_head dsa_tree_list; #endif