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It is possible to stack multiple DSA switches in a way that they are not part of the tree (disjoint) but the DSA master of a switch is a DSA slave of another. When that happens switch drivers may have to know this is the case so as to determine whether their tagging protocol has a remove chance of working. This is useful for specific switch drivers such as b53 where devices have been known to be stacked in the wild without the Broadcom tag protocol supporting that feature. This allows b53 to continue supporting those devices by forcing the disabling of Broadcom tags on the outermost switches if necessary. The get_tag_protocol() function is therefore updated to gain an additional enum dsa_tag_protocol argument which denotes the current tagging protocol used by the DSA master we are attached to, else DSA_TAG_PROTO_NONE for the top of the dsa_switch_tree. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
185 lines
5.5 KiB
C
185 lines
5.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* net/dsa/dsa_priv.h - Hardware switch handling
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*/
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#ifndef __DSA_PRIV_H
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#define __DSA_PRIV_H
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#include <linux/phy.h>
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#include <linux/netdevice.h>
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#include <linux/netpoll.h>
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#include <net/dsa.h>
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enum {
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DSA_NOTIFIER_AGEING_TIME,
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DSA_NOTIFIER_BRIDGE_JOIN,
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DSA_NOTIFIER_BRIDGE_LEAVE,
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DSA_NOTIFIER_FDB_ADD,
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DSA_NOTIFIER_FDB_DEL,
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DSA_NOTIFIER_MDB_ADD,
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DSA_NOTIFIER_MDB_DEL,
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DSA_NOTIFIER_VLAN_ADD,
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DSA_NOTIFIER_VLAN_DEL,
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};
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/* DSA_NOTIFIER_AGEING_TIME */
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struct dsa_notifier_ageing_time_info {
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struct switchdev_trans *trans;
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unsigned int ageing_time;
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};
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/* DSA_NOTIFIER_BRIDGE_* */
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struct dsa_notifier_bridge_info {
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struct net_device *br;
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int sw_index;
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int port;
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};
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/* DSA_NOTIFIER_FDB_* */
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struct dsa_notifier_fdb_info {
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int sw_index;
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int port;
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const unsigned char *addr;
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u16 vid;
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};
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/* DSA_NOTIFIER_MDB_* */
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struct dsa_notifier_mdb_info {
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const struct switchdev_obj_port_mdb *mdb;
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struct switchdev_trans *trans;
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int sw_index;
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int port;
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};
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/* DSA_NOTIFIER_VLAN_* */
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struct dsa_notifier_vlan_info {
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const struct switchdev_obj_port_vlan *vlan;
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struct switchdev_trans *trans;
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int sw_index;
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int port;
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};
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struct dsa_slave_priv {
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/* Copy of CPU port xmit for faster access in slave transmit hot path */
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struct sk_buff * (*xmit)(struct sk_buff *skb,
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struct net_device *dev);
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struct pcpu_sw_netstats *stats64;
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/* DSA port data, such as switch, port index, etc. */
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struct dsa_port *dp;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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struct netpoll *netpoll;
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#endif
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/* TC context */
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struct list_head mall_tc_list;
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};
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/* dsa.c */
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const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol);
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void dsa_tag_driver_put(const struct dsa_device_ops *ops);
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bool dsa_schedule_work(struct work_struct *work);
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const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
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int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
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struct net_device *dev,
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const unsigned char *addr, u16 vid,
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u16 flags,
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struct netlink_ext_ack *extack);
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int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
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struct net_device *dev,
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const unsigned char *addr, u16 vid);
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/* master.c */
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int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp);
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void dsa_master_teardown(struct net_device *dev);
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static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
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int device, int port)
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{
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struct dsa_port *cpu_dp = dev->dsa_ptr;
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struct dsa_switch_tree *dst = cpu_dp->dst;
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struct dsa_port *dp;
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list_for_each_entry(dp, &dst->ports, list)
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if (dp->ds->index == device && dp->index == port &&
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dp->type == DSA_PORT_TYPE_USER)
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return dp->slave;
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return NULL;
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}
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/* port.c */
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int dsa_port_set_state(struct dsa_port *dp, u8 state,
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struct switchdev_trans *trans);
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int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
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void dsa_port_disable(struct dsa_port *dp);
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int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br);
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void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
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int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
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struct switchdev_trans *trans);
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int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
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struct switchdev_trans *trans);
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int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
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u16 vid);
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int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
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u16 vid);
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int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data);
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int dsa_port_mdb_add(const struct dsa_port *dp,
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const struct switchdev_obj_port_mdb *mdb,
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struct switchdev_trans *trans);
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int dsa_port_mdb_del(const struct dsa_port *dp,
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const struct switchdev_obj_port_mdb *mdb);
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int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags,
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struct switchdev_trans *trans);
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int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags,
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struct switchdev_trans *trans);
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int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
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struct switchdev_trans *trans);
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int dsa_port_vlan_add(struct dsa_port *dp,
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const struct switchdev_obj_port_vlan *vlan,
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struct switchdev_trans *trans);
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int dsa_port_vlan_del(struct dsa_port *dp,
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const struct switchdev_obj_port_vlan *vlan);
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int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags);
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int dsa_port_vid_del(struct dsa_port *dp, u16 vid);
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int dsa_port_link_register_of(struct dsa_port *dp);
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void dsa_port_link_unregister_of(struct dsa_port *dp);
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extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;
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/* slave.c */
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extern const struct dsa_device_ops notag_netdev_ops;
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void dsa_slave_mii_bus_init(struct dsa_switch *ds);
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int dsa_slave_create(struct dsa_port *dp);
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void dsa_slave_destroy(struct net_device *slave_dev);
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bool dsa_slave_dev_check(const struct net_device *dev);
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int dsa_slave_suspend(struct net_device *slave_dev);
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int dsa_slave_resume(struct net_device *slave_dev);
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int dsa_slave_register_notifier(void);
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void dsa_slave_unregister_notifier(void);
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static inline struct dsa_port *dsa_slave_to_port(const struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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return p->dp;
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}
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static inline struct net_device *
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dsa_slave_to_master(const struct net_device *dev)
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{
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struct dsa_port *dp = dsa_slave_to_port(dev);
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return dp->cpu_dp->master;
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}
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/* switch.c */
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int dsa_switch_register_notifier(struct dsa_switch *ds);
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void dsa_switch_unregister_notifier(struct dsa_switch *ds);
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#endif
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