[linux-2.6-block.git] / net / dsa / port.c

/*
 * Handling of a single switch port
 *
 * Copyright (c) 2017 Savoir-faire Linux Inc.
 *	Vivien Didelot <vivien.didelot@savoirfairelinux.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/if_bridge.h>
#include <linux/notifier.h>
#include <linux/of_mdio.h>
#include <linux/of_net.h>

#include "dsa_priv.h"

static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v)
{
	struct raw_notifier_head *nh = &dp->ds->dst->nh;
	int err;

	err = raw_notifier_call_chain(nh, e, v);

	return notifier_to_errno(err);
}

int dsa_port_set_state(struct dsa_port *dp, u8 state,
		       struct switchdev_trans *trans)
{
	struct dsa_switch *ds = dp->ds;
	int port = dp->index;

	if (switchdev_trans_ph_prepare(trans))
		return ds->ops->port_stp_state_set ? 0 : -EOPNOTSUPP;

	if (ds->ops->port_stp_state_set)
		ds->ops->port_stp_state_set(ds, port, state);

	if (ds->ops->port_fast_age) {
		/* Fast age FDB entries or flush appropriate forwarding database
		 * for the given port, if we are moving it from Learning or
		 * Forwarding state, to Disabled or Blocking or Listening state.
		 */

		if ((dp->stp_state == BR_STATE_LEARNING ||
		     dp->stp_state == BR_STATE_FORWARDING) &&
		    (state == BR_STATE_DISABLED ||
		     state == BR_STATE_BLOCKING ||
		     state == BR_STATE_LISTENING))
			ds->ops->port_fast_age(ds, port);
	}

	dp->stp_state = state;

	return 0;
}

static void dsa_port_set_state_now(struct dsa_port *dp, u8 state)
{
	int err;

	err = dsa_port_set_state(dp, state, NULL);
	if (err)
		pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
}

int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
{
	struct dsa_switch *ds = dp->ds;
	int port = dp->index;
	int err;

	if (ds->ops->port_enable) {
		err = ds->ops->port_enable(ds, port, phy);
		if (err)
			return err;
	}

	if (!dp->bridge_dev)
		dsa_port_set_state_now(dp, BR_STATE_FORWARDING);

	return 0;
}

void dsa_port_disable(struct dsa_port *dp, struct phy_device *phy)
{
	struct dsa_switch *ds = dp->ds;
	int port = dp->index;

	if (!dp->bridge_dev)
		dsa_port_set_state_now(dp, BR_STATE_DISABLED);

	if (ds->ops->port_disable)
		ds->ops->port_disable(ds, port, phy);
}

int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br)
{
	struct dsa_notifier_bridge_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.br = br,
	};
	int err;

	/* Set the flooding mode before joining the port in the switch */
	err = dsa_port_bridge_flags(dp, BR_FLOOD | BR_MCAST_FLOOD, NULL);
	if (err)
		return err;

	/* Here the interface is already bridged. Reflect the current
	 * configuration so that drivers can program their chips accordingly.
	 */
	dp->bridge_dev = br;

	err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_JOIN, &info);

	/* The bridging is rolled back on error */
	if (err) {
		dsa_port_bridge_flags(dp, 0, NULL);
		dp->bridge_dev = NULL;
	}

	return err;
}

void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
{
	struct dsa_notifier_bridge_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.br = br,
	};
	int err;

	/* Here the port is already unbridged. Reflect the current configuration
	 * so that drivers can program their chips accordingly.
	 */
	dp->bridge_dev = NULL;

	err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_LEAVE, &info);
	if (err)
		pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n");

	/* Port is leaving the bridge, disable flooding */
	dsa_port_bridge_flags(dp, 0, NULL);

	/* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
	 * so allow it to be in BR_STATE_FORWARDING to be kept functional
	 */
	dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
}

int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
			    struct switchdev_trans *trans)
{
	struct dsa_switch *ds = dp->ds;

	/* bridge skips -EOPNOTSUPP, so skip the prepare phase */
	if (switchdev_trans_ph_prepare(trans))
		return 0;

	if (ds->ops->port_vlan_filtering)
		return ds->ops->port_vlan_filtering(ds, dp->index,
						    vlan_filtering);

	return 0;
}

int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
			 struct switchdev_trans *trans)
{
	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
	unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
	struct dsa_notifier_ageing_time_info info = {
		.ageing_time = ageing_time,
		.trans = trans,
	};

	if (switchdev_trans_ph_prepare(trans))
		return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);

	dp->ageing_time = ageing_time;

	return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
}

int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags,
			      struct switchdev_trans *trans)
{
	struct dsa_switch *ds = dp->ds;

	if (!ds->ops->port_egress_floods ||
	    (flags & ~(BR_FLOOD | BR_MCAST_FLOOD)))
		return -EINVAL;

	return 0;
}

int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags,
			  struct switchdev_trans *trans)
{
	struct dsa_switch *ds = dp->ds;
	int port = dp->index;
	int err = 0;

	if (switchdev_trans_ph_prepare(trans))
		return 0;

	if (ds->ops->port_egress_floods)
		err = ds->ops->port_egress_floods(ds, port, flags & BR_FLOOD,
						  flags & BR_MCAST_FLOOD);

	return err;
}

int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
		     u16 vid)
{
	struct dsa_notifier_fdb_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.addr = addr,
		.vid = vid,
	};

	return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
}

int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
		     u16 vid)
{
	struct dsa_notifier_fdb_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.addr = addr,
		.vid = vid,

	};

	return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
}

int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data)
{
	struct dsa_switch *ds = dp->ds;
	int port = dp->index;

	if (!ds->ops->port_fdb_dump)
		return -EOPNOTSUPP;

	return ds->ops->port_fdb_dump(ds, port, cb, data);
}

int dsa_port_mdb_add(const struct dsa_port *dp,
		     const struct switchdev_obj_port_mdb *mdb,
		     struct switchdev_trans *trans)
{
	struct dsa_notifier_mdb_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.trans = trans,
		.mdb = mdb,
	};

	return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
}

int dsa_port_mdb_del(const struct dsa_port *dp,
		     const struct switchdev_obj_port_mdb *mdb)
{
	struct dsa_notifier_mdb_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.mdb = mdb,
	};

	return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
}

int dsa_port_vlan_add(struct dsa_port *dp,
		      const struct switchdev_obj_port_vlan *vlan,
		      struct switchdev_trans *trans)
{
	struct dsa_notifier_vlan_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.trans = trans,
		.vlan = vlan,
	};

	/* Can be called from dsa_slave_port_obj_add() or
	 * dsa_slave_vlan_rx_add_vid()
	 */
	if (!dp->bridge_dev || br_vlan_enabled(dp->bridge_dev))
		return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);

	return 0;
}

int dsa_port_vlan_del(struct dsa_port *dp,
		      const struct switchdev_obj_port_vlan *vlan)
{
	struct dsa_notifier_vlan_info info = {
		.sw_index = dp->ds->index,
		.port = dp->index,
		.vlan = vlan,
	};

	if (vlan->obj.orig_dev && netif_is_bridge_master(vlan->obj.orig_dev))
		return -EOPNOTSUPP;

	/* Can be called from dsa_slave_port_obj_del() or
	 * dsa_slave_vlan_rx_kill_vid()
	 */
	if (!dp->bridge_dev || br_vlan_enabled(dp->bridge_dev))
		return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);

	return 0;
}

static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
{
	struct device_node *phy_dn;
	struct phy_device *phydev;

	phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
	if (!phy_dn)
		return NULL;

	phydev = of_phy_find_device(phy_dn);
	if (!phydev) {
		of_node_put(phy_dn);
		return ERR_PTR(-EPROBE_DEFER);
	}

	return phydev;
}

static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable)
{
	struct dsa_switch *ds = dp->ds;
	struct phy_device *phydev;
	int port = dp->index;
	int err = 0;

	phydev = dsa_port_get_phy_device(dp);
	if (!phydev)
		return 0;

	if (IS_ERR(phydev))
		return PTR_ERR(phydev);

	if (enable) {
		err = genphy_config_init(phydev);
		if (err < 0)
			goto err_put_dev;

		err = genphy_resume(phydev);
		if (err < 0)
			goto err_put_dev;

		err = genphy_read_status(phydev);
		if (err < 0)
			goto err_put_dev;
	} else {
		err = genphy_suspend(phydev);
		if (err < 0)
			goto err_put_dev;
	}

	if (ds->ops->adjust_link)
		ds->ops->adjust_link(ds, port, phydev);

	dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));

err_put_dev:
	put_device(&phydev->mdio.dev);
	return err;
}

static int dsa_port_fixed_link_register_of(struct dsa_port *dp)
{
	struct device_node *dn = dp->dn;
	struct dsa_switch *ds = dp->ds;
	struct phy_device *phydev;
	int port = dp->index;
	int mode;
	int err;

	err = of_phy_register_fixed_link(dn);
	if (err) {
		dev_err(ds->dev,
			"failed to register the fixed PHY of port %d\n",
			port);
		return err;
	}

	phydev = of_phy_find_device(dn);

	mode = of_get_phy_mode(dn);
	if (mode < 0)
		mode = PHY_INTERFACE_MODE_NA;
	phydev->interface = mode;

	genphy_config_init(phydev);
	genphy_read_status(phydev);

	if (ds->ops->adjust_link)
		ds->ops->adjust_link(ds, port, phydev);

	put_device(&phydev->mdio.dev);

	return 0;
}

int dsa_port_link_register_of(struct dsa_port *dp)
{
	if (of_phy_is_fixed_link(dp->dn))
		return dsa_port_fixed_link_register_of(dp);
	else
		return dsa_port_setup_phy_of(dp, true);
}

void dsa_port_link_unregister_of(struct dsa_port *dp)
{
	if (of_phy_is_fixed_link(dp->dn))
		of_phy_deregister_fixed_link(dp->dn);
	else
		dsa_port_setup_phy_of(dp, false);
}

int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data)
{
	struct phy_device *phydev;
	int ret = -EOPNOTSUPP;

	if (of_phy_is_fixed_link(dp->dn))
		return ret;

	phydev = dsa_port_get_phy_device(dp);
	if (IS_ERR_OR_NULL(phydev))
		return ret;

	ret = phy_ethtool_get_strings(phydev, data);
	put_device(&phydev->mdio.dev);

	return ret;
}
EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);

int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data)
{
	struct phy_device *phydev;
	int ret = -EOPNOTSUPP;

	if (of_phy_is_fixed_link(dp->dn))
		return ret;

	phydev = dsa_port_get_phy_device(dp);
	if (IS_ERR_OR_NULL(phydev))
		return ret;

	ret = phy_ethtool_get_stats(phydev, NULL, data);
	put_device(&phydev->mdio.dev);

	return ret;
}
EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);

int dsa_port_get_phy_sset_count(struct dsa_port *dp)
{
	struct phy_device *phydev;
	int ret = -EOPNOTSUPP;

	if (of_phy_is_fixed_link(dp->dn))
		return ret;

	phydev = dsa_port_get_phy_device(dp);
	if (IS_ERR_OR_NULL(phydev))
		return ret;

	ret = phy_ethtool_get_sset_count(phydev);
	put_device(&phydev->mdio.dev);

	return ret;
}
EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);
Commit	Line	Data
a40c175b VD	1	/*
	2	* Handling of a single switch port
	3	*
	4	* Copyright (c) 2017 Savoir-faire Linux Inc.
	5	* Vivien Didelot <vivien.didelot@savoirfairelinux.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*/
	12
	13	#include <linux/if_bridge.h>
cfbed329	14	#include <linux/notifier.h>
57ab1ca2 VD	15	#include <linux/of_mdio.h>
57ab1ca2 VD	16	#include <linux/of_net.h>
a40c175b VD	17
	18	#include "dsa_priv.h"
	19
bb9f6031	20	static int dsa_port_notify(const struct dsa_port dp, unsigned long e, void v)
cfbed329 VD	21	{
	22	struct raw_notifier_head *nh = &dp->ds->dst->nh;
	23	int err;
	24
	25	err = raw_notifier_call_chain(nh, e, v);
	26
	27	return notifier_to_errno(err);
	28	}
	29
a40c175b VD	30	int dsa_port_set_state(struct dsa_port *dp, u8 state,
	31	struct switchdev_trans *trans)
	32	{
	33	struct dsa_switch *ds = dp->ds;
	34	int port = dp->index;
	35
	36	if (switchdev_trans_ph_prepare(trans))
	37	return ds->ops->port_stp_state_set ? 0 : -EOPNOTSUPP;
	38
	39	if (ds->ops->port_stp_state_set)
	40	ds->ops->port_stp_state_set(ds, port, state);
	41
	42	if (ds->ops->port_fast_age) {
	43	/* Fast age FDB entries or flush appropriate forwarding database
	44	* for the given port, if we are moving it from Learning or
	45	* Forwarding state, to Disabled or Blocking or Listening state.
	46	*/
	47
	48	if ((dp->stp_state == BR_STATE_LEARNING \|\|
	49	dp->stp_state == BR_STATE_FORWARDING) &&
	50	(state == BR_STATE_DISABLED \|\|
	51	state == BR_STATE_BLOCKING \|\|
	52	state == BR_STATE_LISTENING))
	53	ds->ops->port_fast_age(ds, port);
	54	}
	55
	56	dp->stp_state = state;
	57
	58	return 0;
	59	}
	60
fb8a6a2b	61	static void dsa_port_set_state_now(struct dsa_port *dp, u8 state)
a40c175b VD	62	{
	63	int err;
	64
	65	err = dsa_port_set_state(dp, state, NULL);
	66	if (err)
	67	pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
	68	}
cfbed329	69
fb8a6a2b VD	70	int dsa_port_enable(struct dsa_port dp, struct phy_device phy)
fb8a6a2b VD	71	{
fb8a6a2b VD	72	struct dsa_switch *ds = dp->ds;
	73	int port = dp->index;
	74	int err;
	75
	76	if (ds->ops->port_enable) {
	77	err = ds->ops->port_enable(ds, port, phy);
	78	if (err)
	79	return err;
	80	}
	81
9c2054a5 RK	82	if (!dp->bridge_dev)
9c2054a5 RK	83	dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
fb8a6a2b VD	84
	85	return 0;
	86	}
	87
	88	void dsa_port_disable(struct dsa_port dp, struct phy_device phy)
	89	{
	90	struct dsa_switch *ds = dp->ds;
	91	int port = dp->index;
	92
9c2054a5 RK	93	if (!dp->bridge_dev)
9c2054a5 RK	94	dsa_port_set_state_now(dp, BR_STATE_DISABLED);
fb8a6a2b VD	95
	96	if (ds->ops->port_disable)
	97	ds->ops->port_disable(ds, port, phy);
	98	}
	99
cfbed329 VD	100	int dsa_port_bridge_join(struct dsa_port dp, struct net_device br)
	101	{
	102	struct dsa_notifier_bridge_info info = {
	103	.sw_index = dp->ds->index,
	104	.port = dp->index,
	105	.br = br,
	106	};
	107	int err;
	108
c1388063 RK	109	/* Set the flooding mode before joining the port in the switch */
	110	err = dsa_port_bridge_flags(dp, BR_FLOOD \| BR_MCAST_FLOOD, NULL);
	111	if (err)
	112	return err;
	113
	114	/* Here the interface is already bridged. Reflect the current
	115	* configuration so that drivers can program their chips accordingly.
cfbed329 VD	116	*/
	117	dp->bridge_dev = br;
	118
	119	err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_JOIN, &info);
	120
	121	/* The bridging is rolled back on error */
c1388063 RK	122	if (err) {
c1388063 RK	123	dsa_port_bridge_flags(dp, 0, NULL);
cfbed329	124	dp->bridge_dev = NULL;
c1388063	125	}
cfbed329 VD	126
	127	return err;
	128	}
	129
	130	void dsa_port_bridge_leave(struct dsa_port dp, struct net_device br)
	131	{
	132	struct dsa_notifier_bridge_info info = {
	133	.sw_index = dp->ds->index,
	134	.port = dp->index,
	135	.br = br,
	136	};
	137	int err;
	138
	139	/* Here the port is already unbridged. Reflect the current configuration
	140	* so that drivers can program their chips accordingly.
	141	*/
	142	dp->bridge_dev = NULL;
	143
	144	err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_LEAVE, &info);
	145	if (err)
	146	pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n");
	147
c1388063 RK	148	/* Port is leaving the bridge, disable flooding */
	149	dsa_port_bridge_flags(dp, 0, NULL);
	150
cfbed329 VD	151	/* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
	152	* so allow it to be in BR_STATE_FORWARDING to be kept functional
	153	*/
	154	dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
	155	}
4d61d304 VD	156
	157	int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
	158	struct switchdev_trans *trans)
	159	{
	160	struct dsa_switch *ds = dp->ds;
	161
	162	/* bridge skips -EOPNOTSUPP, so skip the prepare phase */
	163	if (switchdev_trans_ph_prepare(trans))
	164	return 0;
	165
	166	if (ds->ops->port_vlan_filtering)
	167	return ds->ops->port_vlan_filtering(ds, dp->index,
	168	vlan_filtering);
	169
	170	return 0;
	171	}
d87bd94e	172
d87bd94e VD	173	int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock,
	174	struct switchdev_trans *trans)
	175	{
	176	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
	177	unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
1faabf74 VD	178	struct dsa_notifier_ageing_time_info info = {
1faabf74 VD	179	.ageing_time = ageing_time,
1faabf74 VD	180	.trans = trans,
1faabf74 VD	181	};
d87bd94e	182
1faabf74 VD	183	if (switchdev_trans_ph_prepare(trans))
1faabf74 VD	184	return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
d87bd94e	185
d87bd94e	186	dp->ageing_time = ageing_time;
d87bd94e	187
1faabf74	188	return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
d87bd94e	189	}
d1cffff0	190
ea87005a FF	191	int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags,
	192	struct switchdev_trans *trans)
	193	{
	194	struct dsa_switch *ds = dp->ds;
	195
	196	if (!ds->ops->port_egress_floods \|\|
	197	(flags & ~(BR_FLOOD \| BR_MCAST_FLOOD)))
	198	return -EINVAL;
	199
	200	return 0;
	201	}
	202
57652796 RK	203	int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags,
	204	struct switchdev_trans *trans)
	205	{
	206	struct dsa_switch *ds = dp->ds;
	207	int port = dp->index;
	208	int err = 0;
	209
	210	if (switchdev_trans_ph_prepare(trans))
	211	return 0;
	212
	213	if (ds->ops->port_egress_floods)
	214	err = ds->ops->port_egress_floods(ds, port, flags & BR_FLOOD,
	215	flags & BR_MCAST_FLOOD);
	216
	217	return err;
	218	}
	219
2acf4e6a AS	220	int dsa_port_fdb_add(struct dsa_port dp, const unsigned char addr,
2acf4e6a AS	221	u16 vid)
d1cffff0	222	{
685fb6a4 VD	223	struct dsa_notifier_fdb_info info = {
	224	.sw_index = dp->ds->index,
	225	.port = dp->index,
2acf4e6a AS	226	.addr = addr,
2acf4e6a AS	227	.vid = vid,
685fb6a4	228	};
d1cffff0	229
685fb6a4	230	return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
d1cffff0 VD	231	}
d1cffff0 VD	232
2acf4e6a AS	233	int dsa_port_fdb_del(struct dsa_port dp, const unsigned char addr,
2acf4e6a AS	234	u16 vid)
d1cffff0	235	{
685fb6a4 VD	236	struct dsa_notifier_fdb_info info = {
	237	.sw_index = dp->ds->index,
	238	.port = dp->index,
2acf4e6a AS	239	.addr = addr,
	240	.vid = vid,
	241
685fb6a4	242	};
d1cffff0	243
685fb6a4	244	return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
d1cffff0 VD	245	}
d1cffff0 VD	246
de40fc5d VD	247	int dsa_port_fdb_dump(struct dsa_port dp, dsa_fdb_dump_cb_t cb, void *data)
	248	{
	249	struct dsa_switch *ds = dp->ds;
	250	int port = dp->index;
	251
	252	if (!ds->ops->port_fdb_dump)
	253	return -EOPNOTSUPP;
	254
	255	return ds->ops->port_fdb_dump(ds, port, cb, data);
	256	}
	257
bb9f6031	258	int dsa_port_mdb_add(const struct dsa_port *dp,
3a9afea3 VD	259	const struct switchdev_obj_port_mdb *mdb,
	260	struct switchdev_trans *trans)
	261	{
8ae5bcdc VD	262	struct dsa_notifier_mdb_info info = {
	263	.sw_index = dp->ds->index,
	264	.port = dp->index,
	265	.trans = trans,
	266	.mdb = mdb,
	267	};
3a9afea3	268
8ae5bcdc	269	return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
3a9afea3 VD	270	}
3a9afea3 VD	271
bb9f6031	272	int dsa_port_mdb_del(const struct dsa_port *dp,
3a9afea3 VD	273	const struct switchdev_obj_port_mdb *mdb)
3a9afea3 VD	274	{
8ae5bcdc VD	275	struct dsa_notifier_mdb_info info = {
	276	.sw_index = dp->ds->index,
	277	.port = dp->index,
	278	.mdb = mdb,
	279	};
3a9afea3	280
8ae5bcdc	281	return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
3a9afea3 VD	282	}
3a9afea3 VD	283
076e7133 VD	284	int dsa_port_vlan_add(struct dsa_port *dp,
	285	const struct switchdev_obj_port_vlan *vlan,
	286	struct switchdev_trans *trans)
	287	{
d0c627b8 VD	288	struct dsa_notifier_vlan_info info = {
	289	.sw_index = dp->ds->index,
	290	.port = dp->index,
	291	.trans = trans,
	292	.vlan = vlan,
	293	};
076e7133	294
061f6a50 FF	295	/* Can be called from dsa_slave_port_obj_add() or
	296	* dsa_slave_vlan_rx_add_vid()
	297	*/
	298	if (!dp->bridge_dev \|\| br_vlan_enabled(dp->bridge_dev))
2ea7a679 AL	299	return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
	300
	301	return 0;
076e7133 VD	302	}
	303
	304	int dsa_port_vlan_del(struct dsa_port *dp,
	305	const struct switchdev_obj_port_vlan *vlan)
	306	{
d0c627b8 VD	307	struct dsa_notifier_vlan_info info = {
	308	.sw_index = dp->ds->index,
	309	.port = dp->index,
	310	.vlan = vlan,
	311	};
076e7133	312
061f6a50	313	if (vlan->obj.orig_dev && netif_is_bridge_master(vlan->obj.orig_dev))
da0efa88 PM	314	return -EOPNOTSUPP;
da0efa88 PM	315
061f6a50 FF	316	/* Can be called from dsa_slave_port_obj_del() or
	317	* dsa_slave_vlan_rx_kill_vid()
	318	*/
	319	if (!dp->bridge_dev \|\| br_vlan_enabled(dp->bridge_dev))
2ea7a679 AL	320	return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
	321
	322	return 0;
076e7133	323	}
57ab1ca2	324
6207a78c	325	static struct phy_device dsa_port_get_phy_device(struct dsa_port dp)
33615367	326	{
33615367	327	struct device_node *phy_dn;
33615367	328	struct phy_device *phydev;
33615367	329
6207a78c	330	phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
33615367	331	if (!phy_dn)
6207a78c	332	return NULL;
33615367 SR	333
	334	phydev = of_phy_find_device(phy_dn);
	335	if (!phydev) {
6207a78c FF	336	of_node_put(phy_dn);
6207a78c FF	337	return ERR_PTR(-EPROBE_DEFER);
33615367 SR	338	}
33615367 SR	339
6207a78c FF	340	return phydev;
	341	}
	342
	343	static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable)
	344	{
	345	struct dsa_switch *ds = dp->ds;
	346	struct phy_device *phydev;
	347	int port = dp->index;
	348	int err = 0;
	349
	350	phydev = dsa_port_get_phy_device(dp);
	351	if (!phydev)
	352	return 0;
	353
	354	if (IS_ERR(phydev))
	355	return PTR_ERR(phydev);
	356
33615367 SR	357	if (enable) {
	358	err = genphy_config_init(phydev);
	359	if (err < 0)
	360	goto err_put_dev;
	361
	362	err = genphy_resume(phydev);
	363	if (err < 0)
	364	goto err_put_dev;
	365
	366	err = genphy_read_status(phydev);
	367	if (err < 0)
	368	goto err_put_dev;
	369	} else {
	370	err = genphy_suspend(phydev);
	371	if (err < 0)
	372	goto err_put_dev;
	373	}
	374
	375	if (ds->ops->adjust_link)
	376	ds->ops->adjust_link(ds, port, phydev);
	377
	378	dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));
	379
	380	err_put_dev:
	381	put_device(&phydev->mdio.dev);
33615367 SR	382	return err;
	383	}
	384
	385	static int dsa_port_fixed_link_register_of(struct dsa_port *dp)
57ab1ca2 VD	386	{
	387	struct device_node *dn = dp->dn;
	388	struct dsa_switch *ds = dp->ds;
	389	struct phy_device *phydev;
	390	int port = dp->index;
	391	int mode;
	392	int err;
	393
33615367 SR	394	err = of_phy_register_fixed_link(dn);
	395	if (err) {
	396	dev_err(ds->dev,
	397	"failed to register the fixed PHY of port %d\n",
	398	port);
	399	return err;
	400	}
57ab1ca2	401
33615367	402	phydev = of_phy_find_device(dn);
57ab1ca2	403
33615367 SR	404	mode = of_get_phy_mode(dn);
	405	if (mode < 0)
	406	mode = PHY_INTERFACE_MODE_NA;
	407	phydev->interface = mode;
57ab1ca2	408
33615367 SR	409	genphy_config_init(phydev);
33615367 SR	410	genphy_read_status(phydev);
57ab1ca2	411
33615367 SR	412	if (ds->ops->adjust_link)
33615367 SR	413	ds->ops->adjust_link(ds, port, phydev);
57ab1ca2	414
33615367	415	put_device(&phydev->mdio.dev);
57ab1ca2 VD	416
	417	return 0;
	418	}
	419
33615367	420	int dsa_port_link_register_of(struct dsa_port *dp)
57ab1ca2	421	{
33615367 SR	422	if (of_phy_is_fixed_link(dp->dn))
	423	return dsa_port_fixed_link_register_of(dp);
	424	else
	425	return dsa_port_setup_phy_of(dp, true);
	426	}
57ab1ca2	427
33615367 SR	428	void dsa_port_link_unregister_of(struct dsa_port *dp)
	429	{
	430	if (of_phy_is_fixed_link(dp->dn))
	431	of_phy_deregister_fixed_link(dp->dn);
	432	else
	433	dsa_port_setup_phy_of(dp, false);
57ab1ca2	434	}
cf963573 FF	435
	436	int dsa_port_get_phy_strings(struct dsa_port dp, uint8_t data)
	437	{
	438	struct phy_device *phydev;
	439	int ret = -EOPNOTSUPP;
	440
	441	if (of_phy_is_fixed_link(dp->dn))
	442	return ret;
	443
	444	phydev = dsa_port_get_phy_device(dp);
	445	if (IS_ERR_OR_NULL(phydev))
	446	return ret;
	447
	448	ret = phy_ethtool_get_strings(phydev, data);
	449	put_device(&phydev->mdio.dev);
	450
	451	return ret;
	452	}
	453	EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);
	454
	455	int dsa_port_get_ethtool_phy_stats(struct dsa_port dp, uint64_t data)
	456	{
	457	struct phy_device *phydev;
	458	int ret = -EOPNOTSUPP;
	459
	460	if (of_phy_is_fixed_link(dp->dn))
	461	return ret;
	462
	463	phydev = dsa_port_get_phy_device(dp);
	464	if (IS_ERR_OR_NULL(phydev))
	465	return ret;
	466
	467	ret = phy_ethtool_get_stats(phydev, NULL, data);
	468	put_device(&phydev->mdio.dev);
	469
	470	return ret;
	471	}
	472	EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);
	473
	474	int dsa_port_get_phy_sset_count(struct dsa_port *dp)
	475	{
	476	struct phy_device *phydev;
	477	int ret = -EOPNOTSUPP;
	478
	479	if (of_phy_is_fixed_link(dp->dn))
	480	return ret;
	481
	482	phydev = dsa_port_get_phy_device(dp);
	483	if (IS_ERR_OR_NULL(phydev))
	484	return ret;
	485
	486	ret = phy_ethtool_get_sset_count(phydev);
	487	put_device(&phydev->mdio.dev);
	488
	489	return ret;
	490	}
	491	EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);