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- /* 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 <linux/if_bridge.h>
- #include <linux/phy.h>
- #include <linux/netdevice.h>
- #include <linux/netpoll.h>
- #include <net/dsa.h>
- #include <net/gro_cells.h>
- 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_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 pcpu_sw_netstats __percpu *stats64;
- 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);
- bool dsa_slave_dev_check(const struct net_device *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
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