[mirror_ubuntu-jammy-kernel.git] / net / dsa / dsa_priv.h

/* 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>

#define DSA_MAX_NUM_OFFLOADING_BRIDGES		BITS_PER_LONG

enum {
	DSA_NOTIFIER_AGEING_TIME,
	DSA_NOTIFIER_BRIDGE_JOIN,
	DSA_NOTIFIER_BRIDGE_LEAVE,
	DSA_NOTIFIER_FDB_ADD,
	DSA_NOTIFIER_FDB_DEL,
	DSA_NOTIFIER_HOST_FDB_ADD,
	DSA_NOTIFIER_HOST_FDB_DEL,
	DSA_NOTIFIER_HSR_JOIN,
	DSA_NOTIFIER_HSR_LEAVE,
	DSA_NOTIFIER_LAG_CHANGE,
	DSA_NOTIFIER_LAG_JOIN,
	DSA_NOTIFIER_LAG_LEAVE,
	DSA_NOTIFIER_MDB_ADD,
	DSA_NOTIFIER_MDB_DEL,
	DSA_NOTIFIER_HOST_MDB_ADD,
	DSA_NOTIFIER_HOST_MDB_DEL,
	DSA_NOTIFIER_VLAN_ADD,
	DSA_NOTIFIER_VLAN_DEL,
	DSA_NOTIFIER_MTU,
	DSA_NOTIFIER_TAG_PROTO,
	DSA_NOTIFIER_MRP_ADD,
	DSA_NOTIFIER_MRP_DEL,
	DSA_NOTIFIER_MRP_ADD_RING_ROLE,
	DSA_NOTIFIER_MRP_DEL_RING_ROLE,
	DSA_NOTIFIER_TAG_8021Q_VLAN_ADD,
	DSA_NOTIFIER_TAG_8021Q_VLAN_DEL,
};

/* DSA_NOTIFIER_AGEING_TIME */
struct dsa_notifier_ageing_time_info {
	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;
	int sw_index;
	int port;
};

/* DSA_NOTIFIER_LAG_* */
struct dsa_notifier_lag_info {
	struct net_device *lag;
	int sw_index;
	int port;

	struct netdev_lag_upper_info *info;
};

/* DSA_NOTIFIER_VLAN_* */
struct dsa_notifier_vlan_info {
	const struct switchdev_obj_port_vlan *vlan;
	int sw_index;
	int port;
	struct netlink_ext_ack *extack;
};

/* DSA_NOTIFIER_MTU */
struct dsa_notifier_mtu_info {
	bool targeted_match;
	int sw_index;
	int port;
	int mtu;
};

/* DSA_NOTIFIER_TAG_PROTO_* */
struct dsa_notifier_tag_proto_info {
	const struct dsa_device_ops *tag_ops;
};

/* DSA_NOTIFIER_MRP_* */
struct dsa_notifier_mrp_info {
	const struct switchdev_obj_mrp *mrp;
	int sw_index;
	int port;
};

/* DSA_NOTIFIER_MRP_* */
struct dsa_notifier_mrp_ring_role_info {
	const struct switchdev_obj_ring_role_mrp *mrp;
	int sw_index;
	int port;
};

/* DSA_NOTIFIER_TAG_8021Q_VLAN_* */
struct dsa_notifier_tag_8021q_vlan_info {
	int tree_index;
	int sw_index;
	int port;
	u16 vid;
};

struct dsa_switchdev_event_work {
	struct dsa_switch *ds;
	int port;
	struct net_device *dev;
	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;
	bool host_addr;
};

/* DSA_NOTIFIER_HSR_* */
struct dsa_notifier_hsr_info {
	struct net_device *hsr;
	int sw_index;
	int port;
};

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);
const struct dsa_device_ops *dsa_find_tagger_by_name(const char *buf);

bool dsa_schedule_work(struct work_struct *work);
const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops);

static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops)
{
	return ops->needed_headroom + ops->needed_tailroom;
}

/* 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 */
void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
			       const struct dsa_device_ops *tag_ops);
int dsa_port_set_state(struct dsa_port *dp, u8 state);
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,
			 struct netlink_ext_ack *extack);
void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br);
void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br);
int dsa_port_lag_change(struct dsa_port *dp,
			struct netdev_lag_lower_state_info *linfo);
int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev,
		      struct netdev_lag_upper_info *uinfo,
		      struct netlink_ext_ack *extack);
void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag_dev);
void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev);
int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
			    struct netlink_ext_ack *extack);
bool dsa_port_skip_vlan_configuration(struct dsa_port *dp);
int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock);
int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
			bool targeted_match);
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_host_fdb_add(struct dsa_port *dp, const unsigned char *addr,
			  u16 vid);
int dsa_port_host_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);
int dsa_port_mdb_del(const struct dsa_port *dp,
		     const struct switchdev_obj_port_mdb *mdb);
int dsa_port_host_mdb_add(const struct dsa_port *dp,
			  const struct switchdev_obj_port_mdb *mdb);
int dsa_port_host_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,
			      struct switchdev_brport_flags flags,
			      struct netlink_ext_ack *extack);
int dsa_port_bridge_flags(const struct dsa_port *dp,
			  struct switchdev_brport_flags flags,
			  struct netlink_ext_ack *extack);
int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
		     struct netlink_ext_ack *extack);
int dsa_port_vlan_add(struct dsa_port *dp,
		      const struct switchdev_obj_port_vlan *vlan,
		      struct netlink_ext_ack *extack);
int dsa_port_vlan_del(struct dsa_port *dp,
		      const struct switchdev_obj_port_vlan *vlan);
int dsa_port_mrp_add(const struct dsa_port *dp,
		     const struct switchdev_obj_mrp *mrp);
int dsa_port_mrp_del(const struct dsa_port *dp,
		     const struct switchdev_obj_mrp *mrp);
int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
			       const struct switchdev_obj_ring_role_mrp *mrp);
int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
			       const struct switchdev_obj_ring_role_mrp *mrp);
int dsa_port_link_register_of(struct dsa_port *dp);
void dsa_port_link_unregister_of(struct dsa_port *dp);
int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr);
void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr);
int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid);
void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid);
extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;

static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp,
						 const struct net_device *dev)
{
	return dsa_port_to_bridge_port(dp) == dev;
}

static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
					    const struct net_device *bridge_dev)
{
	/* DSA ports connected to a bridge, and event was emitted
	 * for the bridge.
	 */
	return dp->bridge_dev == bridge_dev;
}

/* Returns true if any port of this tree offloads the given net_device */
static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst,
						 const struct net_device *dev)
{
	struct dsa_port *dp;

	list_for_each_entry(dp, &dst->ports, list)
		if (dsa_port_offloads_bridge_port(dp, dev))
			return true;

	return false;
}

/* Returns true if any port of this tree offloads the given bridge */
static inline bool dsa_tree_offloads_bridge(struct dsa_switch_tree *dst,
					    const struct net_device *bridge_dev)
{
	struct dsa_port *dp;

	list_for_each_entry(dp, &dst->ports, list)
		if (dsa_port_offloads_bridge(dp, bridge_dev))
			return true;

	return false;
}

/* slave.c */
extern const struct dsa_device_ops notag_netdev_ops;
extern struct notifier_block dsa_slave_switchdev_notifier;
extern struct notifier_block dsa_slave_switchdev_blocking_notifier;

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);
void dsa_slave_setup_tagger(struct net_device *slave);
int dsa_slave_change_mtu(struct net_device *dev, int new_mtu);

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 */
void dsa_lag_map(struct dsa_switch_tree *dst, struct net_device *lag);
void dsa_lag_unmap(struct dsa_switch_tree *dst, struct net_device *lag);
int dsa_tree_notify(struct dsa_switch_tree *dst, unsigned long e, void *v);
int dsa_broadcast(unsigned long e, void *v);
int dsa_tree_change_tag_proto(struct dsa_switch_tree *dst,
			      struct net_device *master,
			      const struct dsa_device_ops *tag_ops,
			      const struct dsa_device_ops *old_tag_ops);

/* tag_8021q.c */
int dsa_tag_8021q_bridge_join(struct dsa_switch *ds,
			      struct dsa_notifier_bridge_info *info);
int dsa_tag_8021q_bridge_leave(struct dsa_switch *ds,
			       struct dsa_notifier_bridge_info *info);
int dsa_switch_tag_8021q_vlan_add(struct dsa_switch *ds,
				  struct dsa_notifier_tag_8021q_vlan_info *info);
int dsa_switch_tag_8021q_vlan_del(struct dsa_switch *ds,
				  struct dsa_notifier_tag_8021q_vlan_info *info);

extern struct list_head dsa_tree_list;

#endif
Commit	Line	Data
2874c5fd	1	/* SPDX-License-Identifier: GPL-2.0-or-later */
91da11f8 LB	2	/*
91da11f8 LB	3	* net/dsa/dsa_priv.h - Hardware switch handling
e84665c9	4	* Copyright (c) 2008-2009 Marvell Semiconductor
91da11f8 LB	5	*/
	6
	7	#ifndef __DSA_PRIV_H
	8	#define __DSA_PRIV_H
	9
412a1526	10	#include <linux/if_bridge.h>
91da11f8	11	#include <linux/phy.h>
5075314e	12	#include <linux/netdevice.h>
04ff53f9	13	#include <linux/netpoll.h>
ea5dd34b	14	#include <net/dsa.h>
e131a563	15	#include <net/gro_cells.h>
5075314e	16
123abc06 VO	17	#define DSA_MAX_NUM_OFFLOADING_BRIDGES BITS_PER_LONG
123abc06 VO	18
52c96f9d	19	enum {
1faabf74	20	DSA_NOTIFIER_AGEING_TIME,
52c96f9d VD	21	DSA_NOTIFIER_BRIDGE_JOIN,
52c96f9d VD	22	DSA_NOTIFIER_BRIDGE_LEAVE,
685fb6a4 VD	23	DSA_NOTIFIER_FDB_ADD,
685fb6a4 VD	24	DSA_NOTIFIER_FDB_DEL,
3dc80afc VO	25	DSA_NOTIFIER_HOST_FDB_ADD,
3dc80afc VO	26	DSA_NOTIFIER_HOST_FDB_DEL,
18596f50 GM	27	DSA_NOTIFIER_HSR_JOIN,
18596f50 GM	28	DSA_NOTIFIER_HSR_LEAVE,
058102a6 TW	29	DSA_NOTIFIER_LAG_CHANGE,
	30	DSA_NOTIFIER_LAG_JOIN,
	31	DSA_NOTIFIER_LAG_LEAVE,
8ae5bcdc VD	32	DSA_NOTIFIER_MDB_ADD,
8ae5bcdc VD	33	DSA_NOTIFIER_MDB_DEL,
b8e997c4 VO	34	DSA_NOTIFIER_HOST_MDB_ADD,
b8e997c4 VO	35	DSA_NOTIFIER_HOST_MDB_DEL,
d0c627b8 VD	36	DSA_NOTIFIER_VLAN_ADD,
d0c627b8 VD	37	DSA_NOTIFIER_VLAN_DEL,
bfcb8132	38	DSA_NOTIFIER_MTU,
53da0eba	39	DSA_NOTIFIER_TAG_PROTO,
c595c433 HV	40	DSA_NOTIFIER_MRP_ADD,
	41	DSA_NOTIFIER_MRP_DEL,
	42	DSA_NOTIFIER_MRP_ADD_RING_ROLE,
	43	DSA_NOTIFIER_MRP_DEL_RING_ROLE,
c64b9c05 VO	44	DSA_NOTIFIER_TAG_8021Q_VLAN_ADD,
c64b9c05 VO	45	DSA_NOTIFIER_TAG_8021Q_VLAN_DEL,
52c96f9d VD	46	};
52c96f9d VD	47
1faabf74 VD	48	/* DSA_NOTIFIER_AGEING_TIME */
1faabf74 VD	49	struct dsa_notifier_ageing_time_info {
1faabf74	50	unsigned int ageing_time;
1faabf74 VD	51	};
1faabf74 VD	52
52c96f9d VD	53	/* DSA_NOTIFIER_BRIDGE_* */
	54	struct dsa_notifier_bridge_info {
	55	struct net_device *br;
f66a6a69	56	int tree_index;
52c96f9d VD	57	int sw_index;
	58	int port;
	59	};
	60
685fb6a4 VD	61	/* DSA_NOTIFIER_FDB_* */
685fb6a4 VD	62	struct dsa_notifier_fdb_info {
685fb6a4 VD	63	int sw_index;
685fb6a4 VD	64	int port;
2acf4e6a AS	65	const unsigned char *addr;
2acf4e6a AS	66	u16 vid;
685fb6a4 VD	67	};
685fb6a4 VD	68
8ae5bcdc VD	69	/* DSA_NOTIFIER_MDB_* */
	70	struct dsa_notifier_mdb_info {
	71	const struct switchdev_obj_port_mdb *mdb;
8ae5bcdc VD	72	int sw_index;
	73	int port;
	74	};
	75
058102a6 TW	76	/* DSA_NOTIFIER_LAG_* */
	77	struct dsa_notifier_lag_info {
	78	struct net_device *lag;
	79	int sw_index;
	80	int port;
	81
	82	struct netdev_lag_upper_info *info;
	83	};
	84
d0c627b8 VD	85	/* DSA_NOTIFIER_VLAN_* */
	86	struct dsa_notifier_vlan_info {
	87	const struct switchdev_obj_port_vlan *vlan;
d0c627b8 VD	88	int sw_index;
d0c627b8 VD	89	int port;
31046a5f	90	struct netlink_ext_ack *extack;
d0c627b8 VD	91	};
d0c627b8 VD	92
bfcb8132 VO	93	/* DSA_NOTIFIER_MTU */
bfcb8132 VO	94	struct dsa_notifier_mtu_info {
88faba20	95	bool targeted_match;
bfcb8132 VO	96	int sw_index;
	97	int port;
	98	int mtu;
	99	};
	100
53da0eba VO	101	/* DSA_NOTIFIER_TAG_PROTO_* */
	102	struct dsa_notifier_tag_proto_info {
	103	const struct dsa_device_ops *tag_ops;
	104	};
	105
c595c433 HV	106	/* DSA_NOTIFIER_MRP_* */
	107	struct dsa_notifier_mrp_info {
	108	const struct switchdev_obj_mrp *mrp;
	109	int sw_index;
	110	int port;
	111	};
	112
	113	/* DSA_NOTIFIER_MRP_* */
	114	struct dsa_notifier_mrp_ring_role_info {
	115	const struct switchdev_obj_ring_role_mrp *mrp;
	116	int sw_index;
	117	int port;
	118	};
	119
c64b9c05 VO	120	/* DSA_NOTIFIER_TAG_8021Q_VLAN_* */
	121	struct dsa_notifier_tag_8021q_vlan_info {
	122	int tree_index;
	123	int sw_index;
	124	int port;
	125	u16 vid;
	126	};
	127
c4bb76a9 VO	128	struct dsa_switchdev_event_work {
	129	struct dsa_switch *ds;
	130	int port;
4bed397c	131	struct net_device *dev;
c4bb76a9 VO	132	struct work_struct work;
	133	unsigned long event;
	134	/* Specific for SWITCHDEV_FDB_ADD_TO_DEVICE and
	135	* SWITCHDEV_FDB_DEL_TO_DEVICE
	136	*/
	137	unsigned char addr[ETH_ALEN];
	138	u16 vid;
3dc80afc	139	bool host_addr;
c4bb76a9 VO	140	};
c4bb76a9 VO	141
18596f50 GM	142	/* DSA_NOTIFIER_HSR_* */
	143	struct dsa_notifier_hsr_info {
	144	struct net_device *hsr;
	145	int sw_index;
	146	int port;
	147	};
	148
91da11f8	149	struct dsa_slave_priv {
15240248	150	/* Copy of CPU port xmit for faster access in slave transmit hot path */
4ed70ce9	151	struct sk_buff * (xmit)(struct sk_buff skb,
5075314e	152	struct net_device *dev);
e84665c9	153
e131a563 AL	154	struct gro_cells gcells;
e131a563 AL	155
afdcf151 VD	156	/* DSA port data, such as switch, port index, etc. */
afdcf151 VD	157	struct dsa_port *dp;
e84665c9	158
04ff53f9 FF	159	#ifdef CONFIG_NET_POLL_CONTROLLER
	160	struct netpoll *netpoll;
	161	#endif
f50f2127 FF	162
	163	/* TC context */
	164	struct list_head mall_tc_list;
91da11f8 LB	165	};
91da11f8 LB	166
91da11f8	167	/* dsa.c */
c39e2a1d	168	const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol);
4dad81ee	169	void dsa_tag_driver_put(const struct dsa_device_ops *ops);
53da0eba	170	const struct dsa_device_ops dsa_find_tagger_by_name(const char buf);
c39e2a1d	171
c9eb3e0f	172	bool dsa_schedule_work(struct work_struct *work);
98cdb480	173	const char dsa_tag_protocol_to_str(const struct dsa_device_ops ops);
91da11f8	174
4e500251 VO	175	static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops)
	176	{
	177	return ops->needed_headroom + ops->needed_tailroom;
	178	}
	179
f2f23566	180	/* master.c */
17a22fcf VD	181	int dsa_master_setup(struct net_device dev, struct dsa_port cpu_dp);
17a22fcf VD	182	void dsa_master_teardown(struct net_device *dev);
f2f23566	183
2231c43b VD	184	static inline struct net_device dsa_master_find_slave(struct net_device dev,
2231c43b VD	185	int device, int port)
3775b1b7	186	{
2f657a60 VD	187	struct dsa_port *cpu_dp = dev->dsa_ptr;
2f657a60 VD	188	struct dsa_switch_tree *dst = cpu_dp->dst;
7b9a2f4b	189	struct dsa_port *dp;
3775b1b7	190
7b9a2f4b VD	191	list_for_each_entry(dp, &dst->ports, list)
	192	if (dp->ds->index == device && dp->index == port &&
	193	dp->type == DSA_PORT_TYPE_USER)
	194	return dp->slave;
3775b1b7	195
7b9a2f4b	196	return NULL;
3775b1b7 VD	197	}
3775b1b7 VD	198
a40c175b	199	/* port.c */
53da0eba VO	200	void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
53da0eba VO	201	const struct dsa_device_ops *tag_ops);
bae33f2b	202	int dsa_port_set_state(struct dsa_port *dp, u8 state);
8640f8dc	203	int dsa_port_enable_rt(struct dsa_port dp, struct phy_device phy);
fb8a6a2b	204	int dsa_port_enable(struct dsa_port dp, struct phy_device phy);
8640f8dc	205	void dsa_port_disable_rt(struct dsa_port *dp);
75104db0	206	void dsa_port_disable(struct dsa_port *dp);
2afc526a VO	207	int dsa_port_bridge_join(struct dsa_port dp, struct net_device br,
2afc526a VO	208	struct netlink_ext_ack *extack);
4e51bf44	209	void dsa_port_pre_bridge_leave(struct dsa_port dp, struct net_device br);
cfbed329	210	void dsa_port_bridge_leave(struct dsa_port dp, struct net_device br);
058102a6 TW	211	int dsa_port_lag_change(struct dsa_port *dp,
	212	struct netdev_lag_lower_state_info *linfo);
	213	int dsa_port_lag_join(struct dsa_port dp, struct net_device lag_dev,
2afc526a VO	214	struct netdev_lag_upper_info *uinfo,
2afc526a VO	215	struct netlink_ext_ack *extack);
4e51bf44	216	void dsa_port_pre_lag_leave(struct dsa_port dp, struct net_device lag_dev);
058102a6	217	void dsa_port_lag_leave(struct dsa_port dp, struct net_device lag_dev);
89153ed6 VO	218	int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
89153ed6 VO	219	struct netlink_ext_ack *extack);
54a0ed0d	220	bool dsa_port_skip_vlan_configuration(struct dsa_port *dp);
bae33f2b	221	int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock);
bfcb8132	222	int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
88faba20	223	bool targeted_match);
2acf4e6a AS	224	int dsa_port_fdb_add(struct dsa_port dp, const unsigned char addr,
	225	u16 vid);
	226	int dsa_port_fdb_del(struct dsa_port dp, const unsigned char addr,
	227	u16 vid);
3dc80afc VO	228	int dsa_port_host_fdb_add(struct dsa_port dp, const unsigned char addr,
	229	u16 vid);
	230	int dsa_port_host_fdb_del(struct dsa_port dp, const unsigned char addr,
	231	u16 vid);
de40fc5d	232	int dsa_port_fdb_dump(struct dsa_port dp, dsa_fdb_dump_cb_t cb, void *data);
bb9f6031	233	int dsa_port_mdb_add(const struct dsa_port *dp,
ffb68fc5	234	const struct switchdev_obj_port_mdb *mdb);
bb9f6031	235	int dsa_port_mdb_del(const struct dsa_port *dp,
3a9afea3	236	const struct switchdev_obj_port_mdb *mdb);
b8e997c4 VO	237	int dsa_port_host_mdb_add(const struct dsa_port *dp,
	238	const struct switchdev_obj_port_mdb *mdb);
	239	int dsa_port_host_mdb_del(const struct dsa_port *dp,
	240	const struct switchdev_obj_port_mdb *mdb);
e18f4c18	241	int dsa_port_pre_bridge_flags(const struct dsa_port *dp,
a8b659e7 VO	242	struct switchdev_brport_flags flags,
a8b659e7 VO	243	struct netlink_ext_ack *extack);
e18f4c18	244	int dsa_port_bridge_flags(const struct dsa_port *dp,
a8b659e7 VO	245	struct switchdev_brport_flags flags,
	246	struct netlink_ext_ack *extack);
	247	int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
	248	struct netlink_ext_ack *extack);
076e7133	249	int dsa_port_vlan_add(struct dsa_port *dp,
31046a5f VO	250	const struct switchdev_obj_port_vlan *vlan,
31046a5f VO	251	struct netlink_ext_ack *extack);
076e7133 VD	252	int dsa_port_vlan_del(struct dsa_port *dp,
076e7133 VD	253	const struct switchdev_obj_port_vlan *vlan);
c595c433 HV	254	int dsa_port_mrp_add(const struct dsa_port *dp,
	255	const struct switchdev_obj_mrp *mrp);
	256	int dsa_port_mrp_del(const struct dsa_port *dp,
	257	const struct switchdev_obj_mrp *mrp);
	258	int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
	259	const struct switchdev_obj_ring_role_mrp *mrp);
	260	int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
	261	const struct switchdev_obj_ring_role_mrp *mrp);
33615367 SR	262	int dsa_port_link_register_of(struct dsa_port *dp);
33615367 SR	263	void dsa_port_link_unregister_of(struct dsa_port *dp);
18596f50 GM	264	int dsa_port_hsr_join(struct dsa_port dp, struct net_device hsr);
18596f50 GM	265	void dsa_port_hsr_leave(struct dsa_port dp, struct net_device hsr);
c64b9c05 VO	266	int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid);
c64b9c05 VO	267	void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid);
77373d49	268	extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;
57ab1ca2	269
03cbb870	270	static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp,
b94dc99c	271	const struct net_device *dev)
058102a6	272	{
cc76ce9e	273	return dsa_port_to_bridge_port(dp) == dev;
058102a6 TW	274	}
058102a6 TW	275
03cbb870	276	static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
b94dc99c	277	const struct net_device *bridge_dev)
03cbb870 VO	278	{
	279	/* DSA ports connected to a bridge, and event was emitted
	280	* for the bridge.
	281	*/
	282	return dp->bridge_dev == bridge_dev;
	283	}
	284
a324d3d4	285	/* Returns true if any port of this tree offloads the given net_device */
03cbb870	286	static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst,
b94dc99c	287	const struct net_device *dev)
a324d3d4 VO	288	{
	289	struct dsa_port *dp;
	290
	291	list_for_each_entry(dp, &dst->ports, list)
03cbb870	292	if (dsa_port_offloads_bridge_port(dp, dev))
a324d3d4 VO	293	return true;
	294
	295	return false;
	296	}
	297
b94dc99c VO	298	/* Returns true if any port of this tree offloads the given bridge */
	299	static inline bool dsa_tree_offloads_bridge(struct dsa_switch_tree *dst,
	300	const struct net_device *bridge_dev)
	301	{
	302	struct dsa_port *dp;
	303
	304	list_for_each_entry(dp, &dst->ports, list)
	305	if (dsa_port_offloads_bridge(dp, bridge_dev))
	306	return true;
	307
	308	return false;
	309	}
	310
91da11f8	311	/* slave.c */
5075314e	312	extern const struct dsa_device_ops notag_netdev_ops;
010e269f VO	313	extern struct notifier_block dsa_slave_switchdev_notifier;
	314	extern struct notifier_block dsa_slave_switchdev_blocking_notifier;
	315
91da11f8	316	void dsa_slave_mii_bus_init(struct dsa_switch *ds);
951259aa	317	int dsa_slave_create(struct dsa_port *dp);
cda5c15b	318	void dsa_slave_destroy(struct net_device *slave_dev);
24462549 FF	319	int dsa_slave_suspend(struct net_device *slave_dev);
24462549 FF	320	int dsa_slave_resume(struct net_device *slave_dev);
88e4f0ca VD	321	int dsa_slave_register_notifier(void);
88e4f0ca VD	322	void dsa_slave_unregister_notifier(void);
53da0eba VO	323	void dsa_slave_setup_tagger(struct net_device *slave);
53da0eba VO	324	int dsa_slave_change_mtu(struct net_device *dev, int new_mtu);
91da11f8	325
d945097b VD	326	static inline struct dsa_port dsa_slave_to_port(const struct net_device dev)
	327	{
	328	struct dsa_slave_priv *p = netdev_priv(dev);
	329
	330	return p->dp;
	331	}
	332
d0006b00 VD	333	static inline struct net_device *
	334	dsa_slave_to_master(const struct net_device *dev)
	335	{
	336	struct dsa_port *dp = dsa_slave_to_port(dev);
	337
f8b8b1cd	338	return dp->cpu_dp->master;
d0006b00 VD	339	}
d0006b00 VD	340
412a1526 VO	341	/* If under a bridge with vlan_filtering=0, make sure to send pvid-tagged
	342	* frames as untagged, since the bridge will not untag them.
	343	*/
	344	static inline struct sk_buff dsa_untag_bridge_pvid(struct sk_buff skb)
	345	{
	346	struct dsa_port *dp = dsa_slave_to_port(skb->dev);
412a1526 VO	347	struct net_device *br = dp->bridge_dev;
	348	struct net_device *dev = skb->dev;
	349	struct net_device *upper_dev;
412a1526 VO	350	u16 vid, pvid, proto;
	351	int err;
	352
	353	if (!br \|\| br_vlan_enabled(br))
	354	return skb;
	355
	356	err = br_vlan_get_proto(br, &proto);
	357	if (err)
	358	return skb;
	359
	360	/* Move VLAN tag from data to hwaccel */
a348292b	361	if (!skb_vlan_tag_present(skb) && skb->protocol == htons(proto)) {
412a1526 VO	362	skb = skb_vlan_untag(skb);
	363	if (!skb)
	364	return NULL;
	365	}
	366
	367	if (!skb_vlan_tag_present(skb))
	368	return skb;
	369
	370	vid = skb_vlan_tag_get_id(skb);
	371
	372	/* We already run under an RCU read-side critical section since
	373	* we are called from netif_receive_skb_list_internal().
	374	*/
	375	err = br_vlan_get_pvid_rcu(dev, &pvid);
	376	if (err)
	377	return skb;
	378
	379	if (vid != pvid)
	380	return skb;
	381
	382	/* The sad part about attempting to untag from DSA is that we
	383	* don't know, unless we check, if the skb will end up in
	384	* the bridge's data path - br_allowed_ingress() - or not.
	385	* For example, there might be an 8021q upper for the
	386	* default_pvid of the bridge, which will steal VLAN-tagged traffic
	387	* from the bridge's data path. This is a configuration that DSA
	388	* supports because vlan_filtering is 0. In that case, we should
	389	* definitely keep the tag, to make sure it keeps working.
	390	*/
3a68844d FF	391	upper_dev = __vlan_find_dev_deep_rcu(br, htons(proto), vid);
	392	if (upper_dev)
	393	return skb;
412a1526 VO	394
	395	__vlan_hwaccel_clear_tag(skb);
	396
	397	return skb;
	398	}
	399
f515f192 VD	400	/* switch.c */
	401	int dsa_switch_register_notifier(struct dsa_switch *ds);
	402	void dsa_switch_unregister_notifier(struct dsa_switch *ds);
bff33f7e VO	403
bff33f7e VO	404	/* dsa2.c */
058102a6 TW	405	void dsa_lag_map(struct dsa_switch_tree dst, struct net_device lag);
058102a6 TW	406	void dsa_lag_unmap(struct dsa_switch_tree dst, struct net_device lag);
886f8e26 VO	407	int dsa_tree_notify(struct dsa_switch_tree dst, unsigned long e, void v);
886f8e26 VO	408	int dsa_broadcast(unsigned long e, void *v);
53da0eba VO	409	int dsa_tree_change_tag_proto(struct dsa_switch_tree *dst,
	410	struct net_device *master,
	411	const struct dsa_device_ops *tag_ops,
	412	const struct dsa_device_ops *old_tag_ops);
058102a6	413
e19cc13c VO	414	/* tag_8021q.c */
	415	int dsa_tag_8021q_bridge_join(struct dsa_switch *ds,
	416	struct dsa_notifier_bridge_info *info);
	417	int dsa_tag_8021q_bridge_leave(struct dsa_switch *ds,
	418	struct dsa_notifier_bridge_info *info);
c64b9c05 VO	419	int dsa_switch_tag_8021q_vlan_add(struct dsa_switch *ds,
	420	struct dsa_notifier_tag_8021q_vlan_info *info);
	421	int dsa_switch_tag_8021q_vlan_del(struct dsa_switch *ds,
	422	struct dsa_notifier_tag_8021q_vlan_info *info);
e19cc13c	423
bff33f7e VO	424	extern struct list_head dsa_tree_list;
bff33f7e VO	425
91da11f8	426	#endif