1/*
  2 * net/dsa/dsa_priv.h - Hardware switch handling
  3 * Copyright (c) 2008-2009 Marvell Semiconductor
  4 *
  5 * This program is free software; you can redistribute it and/or modify
  6 * it under the terms of the GNU General Public License as published by
  7 * the Free Software Foundation; either version 2 of the License, or
  8 * (at your option) any later version.
  9 */
 10
 11#ifndef __DSA_PRIV_H
 12#define __DSA_PRIV_H
 13
 14#include <linux/phy.h>
 15#include <linux/netdevice.h>
 16#include <linux/netpoll.h>
 17#include <net/dsa.h>
 18
 19enum {
 20	DSA_NOTIFIER_AGEING_TIME,
 21	DSA_NOTIFIER_BRIDGE_JOIN,
 22	DSA_NOTIFIER_BRIDGE_LEAVE,
 23	DSA_NOTIFIER_FDB_ADD,
 24	DSA_NOTIFIER_FDB_DEL,
 25	DSA_NOTIFIER_MDB_ADD,
 26	DSA_NOTIFIER_MDB_DEL,
 27	DSA_NOTIFIER_VLAN_ADD,
 28	DSA_NOTIFIER_VLAN_DEL,
 29};
 30
 31/* DSA_NOTIFIER_AGEING_TIME */
 32struct dsa_notifier_ageing_time_info {
 33	struct switchdev_trans *trans;
 34	unsigned int ageing_time;
 35};
 36
 37/* DSA_NOTIFIER_BRIDGE_* */
 38struct dsa_notifier_bridge_info {
 39	struct net_device *br;
 40	int sw_index;
 41	int port;
 42};
 43
 44/* DSA_NOTIFIER_FDB_* */
 45struct dsa_notifier_fdb_info {
 46	int sw_index;
 47	int port;
 48	const unsigned char *addr;
 49	u16 vid;
 50};
 51
 52/* DSA_NOTIFIER_MDB_* */
 53struct dsa_notifier_mdb_info {
 54	const struct switchdev_obj_port_mdb *mdb;
 55	struct switchdev_trans *trans;
 56	int sw_index;
 57	int port;
 58};
 59
 60/* DSA_NOTIFIER_VLAN_* */
 61struct dsa_notifier_vlan_info {
 62	const struct switchdev_obj_port_vlan *vlan;
 63	struct switchdev_trans *trans;
 64	int sw_index;
 65	int port;
 66};
 67
 68struct dsa_slave_priv {
 69	/* Copy of CPU port xmit for faster access in slave transmit hot path */
 70	struct sk_buff *	(*xmit)(struct sk_buff *skb,
 71					struct net_device *dev);
 72
 73	struct pcpu_sw_netstats	*stats64;
 74
 75	/* DSA port data, such as switch, port index, etc. */
 76	struct dsa_port		*dp;
 77
 78	/*
 79	 * The phylib phy_device pointer for the PHY connected
 80	 * to this port.
 81	 */
 82	phy_interface_t		phy_interface;
 83	int			old_link;
 84	int			old_pause;
 85	int			old_duplex;
 86
 87#ifdef CONFIG_NET_POLL_CONTROLLER
 88	struct netpoll		*netpoll;
 89#endif
 90
 91	/* TC context */
 92	struct list_head	mall_tc_list;
 93};
 94
 95/* dsa.c */
 96const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol);
 97bool dsa_schedule_work(struct work_struct *work);
 98
 99/* legacy.c */
100#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
101int dsa_legacy_register(void);
102void dsa_legacy_unregister(void);
103#else
104static inline int dsa_legacy_register(void)
105{
106	return 0;
107}
108
109static inline void dsa_legacy_unregister(void) { }
110#endif
111int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
112		       struct net_device *dev,
113		       const unsigned char *addr, u16 vid,
114		       u16 flags);
115int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
116		       struct net_device *dev,
117		       const unsigned char *addr, u16 vid);
118
119/* master.c */
120int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp);
121void dsa_master_teardown(struct net_device *dev);
122
123static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
124						       int device, int port)
125{
126	struct dsa_port *cpu_dp = dev->dsa_ptr;
127	struct dsa_switch_tree *dst = cpu_dp->dst;
128	struct dsa_switch *ds;
129	struct dsa_port *slave_port;
130
131	if (device < 0 || device >= DSA_MAX_SWITCHES)
132		return NULL;
133
134	ds = dst->ds[device];
135	if (!ds)
136		return NULL;
137
138	if (port < 0 || port >= ds->num_ports)
139		return NULL;
140
141	slave_port = &ds->ports[port];
142
143	if (unlikely(slave_port->type != DSA_PORT_TYPE_USER))
144		return NULL;
145
146	return slave_port->slave;
147}
148
149/* port.c */
150int dsa_port_set_state(struct dsa_port *dp, u8 state,
151		       struct switchdev_trans *trans);
152int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
153void dsa_port_disable(struct dsa_port *dp, struct phy_device *phy);
154int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br);
155void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
156int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
157			    struct switchdev_trans *trans);
158int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
159			 struct switchdev_trans *trans);
160int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
161		     u16 vid);
162int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
163		     u16 vid);
164int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data);
165int dsa_port_mdb_add(const struct dsa_port *dp,
166		     const struct switchdev_obj_port_mdb *mdb,
167		     struct switchdev_trans *trans);
168int dsa_port_mdb_del(const struct dsa_port *dp,
169		     const struct switchdev_obj_port_mdb *mdb);
170int dsa_port_vlan_add(struct dsa_port *dp,
171		      const struct switchdev_obj_port_vlan *vlan,
172		      struct switchdev_trans *trans);
173int dsa_port_vlan_del(struct dsa_port *dp,
174		      const struct switchdev_obj_port_vlan *vlan);
175int dsa_port_link_register_of(struct dsa_port *dp);
176void dsa_port_link_unregister_of(struct dsa_port *dp);
177
178/* slave.c */
179extern const struct dsa_device_ops notag_netdev_ops;
180void dsa_slave_mii_bus_init(struct dsa_switch *ds);
181int dsa_slave_create(struct dsa_port *dp);
182void dsa_slave_destroy(struct net_device *slave_dev);
183int dsa_slave_suspend(struct net_device *slave_dev);
184int dsa_slave_resume(struct net_device *slave_dev);
185int dsa_slave_register_notifier(void);
186void dsa_slave_unregister_notifier(void);
187
188static inline struct dsa_port *dsa_slave_to_port(const struct net_device *dev)
189{
190	struct dsa_slave_priv *p = netdev_priv(dev);
191
192	return p->dp;
193}
194
195static inline struct net_device *
196dsa_slave_to_master(const struct net_device *dev)
197{
198	struct dsa_port *dp = dsa_slave_to_port(dev);
199
200	return dp->cpu_dp->master;
201}
202
203/* switch.c */
204int dsa_switch_register_notifier(struct dsa_switch *ds);
205void dsa_switch_unregister_notifier(struct dsa_switch *ds);
206
207/* tag_brcm.c */
208extern const struct dsa_device_ops brcm_netdev_ops;
209extern const struct dsa_device_ops brcm_prepend_netdev_ops;
210
211/* tag_dsa.c */
212extern const struct dsa_device_ops dsa_netdev_ops;
213
214/* tag_edsa.c */
215extern const struct dsa_device_ops edsa_netdev_ops;
216
217/* tag_ksz.c */
218extern const struct dsa_device_ops ksz_netdev_ops;
219
220/* tag_lan9303.c */
221extern const struct dsa_device_ops lan9303_netdev_ops;
222
223/* tag_mtk.c */
224extern const struct dsa_device_ops mtk_netdev_ops;
225
226/* tag_qca.c */
227extern const struct dsa_device_ops qca_netdev_ops;
228
229/* tag_trailer.c */
230extern const struct dsa_device_ops trailer_netdev_ops;
231
232#endif