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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/list.h>
15#include <linux/phy.h>
16#include <linux/timer.h>
17#include <linux/workqueue.h>
18#include <net/dsa.h>
19
20struct dsa_switch {
21 /*
22 * Parent switch tree, and switch index.
23 */
24 struct dsa_switch_tree *dst;
25 int index;
26
27 /*
28 * Configuration data for this switch.
29 */
30 struct dsa_chip_data *pd;
31
32 /*
33 * The used switch driver.
34 */
35 struct dsa_switch_driver *drv;
36
37 /*
38 * Reference to mii bus to use.
39 */
40 struct mii_bus *master_mii_bus;
41
42 /*
43 * Slave mii_bus and devices for the individual ports.
44 */
45 u32 dsa_port_mask;
46 u32 phys_port_mask;
47 struct mii_bus *slave_mii_bus;
48 struct net_device *ports[DSA_MAX_PORTS];
49};
50
51struct dsa_switch_tree {
52 /*
53 * Configuration data for the platform device that owns
54 * this dsa switch tree instance.
55 */
56 struct dsa_platform_data *pd;
57
58 /*
59 * Reference to network device to use, and which tagging
60 * protocol to use.
61 */
62 struct net_device *master_netdev;
63 __be16 tag_protocol;
64
65 /*
66 * The switch and port to which the CPU is attached.
67 */
68 s8 cpu_switch;
69 s8 cpu_port;
70
71 /*
72 * Link state polling.
73 */
74 int link_poll_needed;
75 struct work_struct link_poll_work;
76 struct timer_list link_poll_timer;
77
78 /*
79 * Data for the individual switch chips.
80 */
81 struct dsa_switch *ds[DSA_MAX_SWITCHES];
82};
83
84static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
85{
86 return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
87}
88
89static inline u8 dsa_upstream_port(struct dsa_switch *ds)
90{
91 struct dsa_switch_tree *dst = ds->dst;
92
93 /*
94 * If this is the root switch (i.e. the switch that connects
95 * to the CPU), return the cpu port number on this switch.
96 * Else return the (DSA) port number that connects to the
97 * switch that is one hop closer to the cpu.
98 */
99 if (dst->cpu_switch == ds->index)
100 return dst->cpu_port;
101 else
102 return ds->pd->rtable[dst->cpu_switch];
103}
104
105struct dsa_slave_priv {
106 /*
107 * The linux network interface corresponding to this
108 * switch port.
109 */
110 struct net_device *dev;
111
112 /*
113 * Which switch this port is a part of, and the port index
114 * for this port.
115 */
116 struct dsa_switch *parent;
117 u8 port;
118
119 /*
120 * The phylib phy_device pointer for the PHY connected
121 * to this port.
122 */
123 struct phy_device *phy;
124};
125
126struct dsa_switch_driver {
127 struct list_head list;
128
129 __be16 tag_protocol;
130 int priv_size;
131
132 /*
133 * Probing and setup.
134 */
135 char *(*probe)(struct mii_bus *bus, int sw_addr);
136 int (*setup)(struct dsa_switch *ds);
137 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
138
139 /*
140 * Access to the switch's PHY registers.
141 */
142 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
143 int (*phy_write)(struct dsa_switch *ds, int port,
144 int regnum, u16 val);
145
146 /*
147 * Link state polling and IRQ handling.
148 */
149 void (*poll_link)(struct dsa_switch *ds);
150
151 /*
152 * ethtool hardware statistics.
153 */
154 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
155 void (*get_ethtool_stats)(struct dsa_switch *ds,
156 int port, uint64_t *data);
157 int (*get_sset_count)(struct dsa_switch *ds);
158};
159
160/* dsa.c */
161extern char dsa_driver_version[];
162void register_switch_driver(struct dsa_switch_driver *type);
163void unregister_switch_driver(struct dsa_switch_driver *type);
164
165/* slave.c */
166void dsa_slave_mii_bus_init(struct dsa_switch *ds);
167struct net_device *dsa_slave_create(struct dsa_switch *ds,
168 struct device *parent,
169 int port, char *name);
170
171/* tag_dsa.c */
172netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev);
173
174/* tag_edsa.c */
175netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev);
176
177/* tag_trailer.c */
178netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev);
179
180
181#endif
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * net/dsa/dsa_priv.h - Hardware switch handling
4 * Copyright (c) 2008-2009 Marvell Semiconductor
5 */
6
7#ifndef __DSA_PRIV_H
8#define __DSA_PRIV_H
9
10#include <linux/phy.h>
11#include <linux/netdevice.h>
12#include <linux/netpoll.h>
13#include <net/dsa.h>
14
15enum {
16 DSA_NOTIFIER_AGEING_TIME,
17 DSA_NOTIFIER_BRIDGE_JOIN,
18 DSA_NOTIFIER_BRIDGE_LEAVE,
19 DSA_NOTIFIER_FDB_ADD,
20 DSA_NOTIFIER_FDB_DEL,
21 DSA_NOTIFIER_MDB_ADD,
22 DSA_NOTIFIER_MDB_DEL,
23 DSA_NOTIFIER_VLAN_ADD,
24 DSA_NOTIFIER_VLAN_DEL,
25};
26
27/* DSA_NOTIFIER_AGEING_TIME */
28struct dsa_notifier_ageing_time_info {
29 struct switchdev_trans *trans;
30 unsigned int ageing_time;
31};
32
33/* DSA_NOTIFIER_BRIDGE_* */
34struct dsa_notifier_bridge_info {
35 struct net_device *br;
36 int sw_index;
37 int port;
38};
39
40/* DSA_NOTIFIER_FDB_* */
41struct dsa_notifier_fdb_info {
42 int sw_index;
43 int port;
44 const unsigned char *addr;
45 u16 vid;
46};
47
48/* DSA_NOTIFIER_MDB_* */
49struct dsa_notifier_mdb_info {
50 const struct switchdev_obj_port_mdb *mdb;
51 struct switchdev_trans *trans;
52 int sw_index;
53 int port;
54};
55
56/* DSA_NOTIFIER_VLAN_* */
57struct dsa_notifier_vlan_info {
58 const struct switchdev_obj_port_vlan *vlan;
59 struct switchdev_trans *trans;
60 int sw_index;
61 int port;
62};
63
64struct dsa_slave_priv {
65 /* Copy of CPU port xmit for faster access in slave transmit hot path */
66 struct sk_buff * (*xmit)(struct sk_buff *skb,
67 struct net_device *dev);
68
69 struct pcpu_sw_netstats *stats64;
70
71 /* DSA port data, such as switch, port index, etc. */
72 struct dsa_port *dp;
73
74#ifdef CONFIG_NET_POLL_CONTROLLER
75 struct netpoll *netpoll;
76#endif
77
78 /* TC context */
79 struct list_head mall_tc_list;
80};
81
82/* dsa.c */
83const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol);
84void dsa_tag_driver_put(const struct dsa_device_ops *ops);
85
86bool dsa_schedule_work(struct work_struct *work);
87const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);
88
89int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
90 struct net_device *dev,
91 const unsigned char *addr, u16 vid,
92 u16 flags,
93 struct netlink_ext_ack *extack);
94int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
95 struct net_device *dev,
96 const unsigned char *addr, u16 vid);
97
98/* master.c */
99int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp);
100void dsa_master_teardown(struct net_device *dev);
101
102static inline struct net_device *dsa_master_find_slave(struct net_device *dev,
103 int device, int port)
104{
105 struct dsa_port *cpu_dp = dev->dsa_ptr;
106 struct dsa_switch_tree *dst = cpu_dp->dst;
107 struct dsa_switch *ds;
108 struct dsa_port *slave_port;
109
110 if (device < 0 || device >= DSA_MAX_SWITCHES)
111 return NULL;
112
113 ds = dst->ds[device];
114 if (!ds)
115 return NULL;
116
117 if (port < 0 || port >= ds->num_ports)
118 return NULL;
119
120 slave_port = &ds->ports[port];
121
122 if (unlikely(slave_port->type != DSA_PORT_TYPE_USER))
123 return NULL;
124
125 return slave_port->slave;
126}
127
128/* port.c */
129int dsa_port_set_state(struct dsa_port *dp, u8 state,
130 struct switchdev_trans *trans);
131int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy);
132void dsa_port_disable(struct dsa_port *dp);
133int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br);
134void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
135int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
136 struct switchdev_trans *trans);
137int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
138 struct switchdev_trans *trans);
139int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
140 u16 vid);
141int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
142 u16 vid);
143int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data);
144int dsa_port_mdb_add(const struct dsa_port *dp,
145 const struct switchdev_obj_port_mdb *mdb,
146 struct switchdev_trans *trans);
147int dsa_port_mdb_del(const struct dsa_port *dp,
148 const struct switchdev_obj_port_mdb *mdb);
149int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags,
150 struct switchdev_trans *trans);
151int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags,
152 struct switchdev_trans *trans);
153int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
154 struct switchdev_trans *trans);
155int dsa_port_vlan_add(struct dsa_port *dp,
156 const struct switchdev_obj_port_vlan *vlan,
157 struct switchdev_trans *trans);
158int dsa_port_vlan_del(struct dsa_port *dp,
159 const struct switchdev_obj_port_vlan *vlan);
160int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags);
161int dsa_port_vid_del(struct dsa_port *dp, u16 vid);
162int dsa_port_link_register_of(struct dsa_port *dp);
163void dsa_port_link_unregister_of(struct dsa_port *dp);
164void dsa_port_phylink_validate(struct phylink_config *config,
165 unsigned long *supported,
166 struct phylink_link_state *state);
167int dsa_port_phylink_mac_link_state(struct phylink_config *config,
168 struct phylink_link_state *state);
169void dsa_port_phylink_mac_config(struct phylink_config *config,
170 unsigned int mode,
171 const struct phylink_link_state *state);
172void dsa_port_phylink_mac_an_restart(struct phylink_config *config);
173void dsa_port_phylink_mac_link_down(struct phylink_config *config,
174 unsigned int mode,
175 phy_interface_t interface);
176void dsa_port_phylink_mac_link_up(struct phylink_config *config,
177 unsigned int mode,
178 phy_interface_t interface,
179 struct phy_device *phydev);
180extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;
181
182/* slave.c */
183extern const struct dsa_device_ops notag_netdev_ops;
184void dsa_slave_mii_bus_init(struct dsa_switch *ds);
185int dsa_slave_create(struct dsa_port *dp);
186void dsa_slave_destroy(struct net_device *slave_dev);
187int dsa_slave_suspend(struct net_device *slave_dev);
188int dsa_slave_resume(struct net_device *slave_dev);
189int dsa_slave_register_notifier(void);
190void dsa_slave_unregister_notifier(void);
191
192void *dsa_defer_xmit(struct sk_buff *skb, struct net_device *dev);
193
194static inline struct dsa_port *dsa_slave_to_port(const struct net_device *dev)
195{
196 struct dsa_slave_priv *p = netdev_priv(dev);
197
198 return p->dp;
199}
200
201static inline struct net_device *
202dsa_slave_to_master(const struct net_device *dev)
203{
204 struct dsa_port *dp = dsa_slave_to_port(dev);
205
206 return dp->cpu_dp->master;
207}
208
209/* switch.c */
210int dsa_switch_register_notifier(struct dsa_switch *ds);
211void dsa_switch_unregister_notifier(struct dsa_switch *ds);
212#endif