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1// SPDX-License-Identifier: (GPL-2.0 OR MIT)2/* Microsemi Ocelot Switch driver3 *4 * This contains glue logic between the switchdev driver operations and the5 * mscc_ocelot_switch_lib.6 *7 * Copyright (c) 2017, 2019 Microsemi Corporation8 * Copyright 2020-2021 NXP9 */10 11#include <linux/dsa/ocelot.h>12#include <linux/if_bridge.h>13#include <linux/of_net.h>14#include <linux/phy/phy.h>15#include <net/pkt_cls.h>16#include "ocelot.h"17#include "ocelot_police.h"18#include "ocelot_vcap.h"19#include "ocelot_fdma.h"20 21#define OCELOT_MAC_QUIRKS	OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP22 23struct ocelot_dump_ctx {24	struct net_device *dev;25	struct sk_buff *skb;26	struct netlink_callback *cb;27	int idx;28};29 30static bool ocelot_netdevice_dev_check(const struct net_device *dev);31 32static struct ocelot *devlink_port_to_ocelot(struct devlink_port *dlp)33{34	return devlink_priv(dlp->devlink);35}36 37static int devlink_port_to_port(struct devlink_port *dlp)38{39	struct ocelot *ocelot = devlink_port_to_ocelot(dlp);40 41	return dlp - ocelot->devlink_ports;42}43 44static int ocelot_devlink_sb_pool_get(struct devlink *dl,45				      unsigned int sb_index, u16 pool_index,46				      struct devlink_sb_pool_info *pool_info)47{48	struct ocelot *ocelot = devlink_priv(dl);49 50	return ocelot_sb_pool_get(ocelot, sb_index, pool_index, pool_info);51}52 53static int ocelot_devlink_sb_pool_set(struct devlink *dl, unsigned int sb_index,54				      u16 pool_index, u32 size,55				      enum devlink_sb_threshold_type threshold_type,56				      struct netlink_ext_ack *extack)57{58	struct ocelot *ocelot = devlink_priv(dl);59 60	return ocelot_sb_pool_set(ocelot, sb_index, pool_index, size,61				  threshold_type, extack);62}63 64static int ocelot_devlink_sb_port_pool_get(struct devlink_port *dlp,65					   unsigned int sb_index, u16 pool_index,66					   u32 *p_threshold)67{68	struct ocelot *ocelot = devlink_port_to_ocelot(dlp);69	int port = devlink_port_to_port(dlp);70 71	return ocelot_sb_port_pool_get(ocelot, port, sb_index, pool_index,72				       p_threshold);73}74 75static int ocelot_devlink_sb_port_pool_set(struct devlink_port *dlp,76					   unsigned int sb_index, u16 pool_index,77					   u32 threshold,78					   struct netlink_ext_ack *extack)79{80	struct ocelot *ocelot = devlink_port_to_ocelot(dlp);81	int port = devlink_port_to_port(dlp);82 83	return ocelot_sb_port_pool_set(ocelot, port, sb_index, pool_index,84				       threshold, extack);85}86 87static int88ocelot_devlink_sb_tc_pool_bind_get(struct devlink_port *dlp,89				   unsigned int sb_index, u16 tc_index,90				   enum devlink_sb_pool_type pool_type,91				   u16 *p_pool_index, u32 *p_threshold)92{93	struct ocelot *ocelot = devlink_port_to_ocelot(dlp);94	int port = devlink_port_to_port(dlp);95 96	return ocelot_sb_tc_pool_bind_get(ocelot, port, sb_index, tc_index,97					  pool_type, p_pool_index,98					  p_threshold);99}100 101static int102ocelot_devlink_sb_tc_pool_bind_set(struct devlink_port *dlp,103				   unsigned int sb_index, u16 tc_index,104				   enum devlink_sb_pool_type pool_type,105				   u16 pool_index, u32 threshold,106				   struct netlink_ext_ack *extack)107{108	struct ocelot *ocelot = devlink_port_to_ocelot(dlp);109	int port = devlink_port_to_port(dlp);110 111	return ocelot_sb_tc_pool_bind_set(ocelot, port, sb_index, tc_index,112					  pool_type, pool_index, threshold,113					  extack);114}115 116static int ocelot_devlink_sb_occ_snapshot(struct devlink *dl,117					  unsigned int sb_index)118{119	struct ocelot *ocelot = devlink_priv(dl);120 121	return ocelot_sb_occ_snapshot(ocelot, sb_index);122}123 124static int ocelot_devlink_sb_occ_max_clear(struct devlink *dl,125					   unsigned int sb_index)126{127	struct ocelot *ocelot = devlink_priv(dl);128 129	return ocelot_sb_occ_max_clear(ocelot, sb_index);130}131 132static int ocelot_devlink_sb_occ_port_pool_get(struct devlink_port *dlp,133					       unsigned int sb_index,134					       u16 pool_index, u32 *p_cur,135					       u32 *p_max)136{137	struct ocelot *ocelot = devlink_port_to_ocelot(dlp);138	int port = devlink_port_to_port(dlp);139 140	return ocelot_sb_occ_port_pool_get(ocelot, port, sb_index, pool_index,141					   p_cur, p_max);142}143 144static int145ocelot_devlink_sb_occ_tc_port_bind_get(struct devlink_port *dlp,146				       unsigned int sb_index, u16 tc_index,147				       enum devlink_sb_pool_type pool_type,148				       u32 *p_cur, u32 *p_max)149{150	struct ocelot *ocelot = devlink_port_to_ocelot(dlp);151	int port = devlink_port_to_port(dlp);152 153	return ocelot_sb_occ_tc_port_bind_get(ocelot, port, sb_index,154					      tc_index, pool_type,155					      p_cur, p_max);156}157 158const struct devlink_ops ocelot_devlink_ops = {159	.sb_pool_get			= ocelot_devlink_sb_pool_get,160	.sb_pool_set			= ocelot_devlink_sb_pool_set,161	.sb_port_pool_get		= ocelot_devlink_sb_port_pool_get,162	.sb_port_pool_set		= ocelot_devlink_sb_port_pool_set,163	.sb_tc_pool_bind_get		= ocelot_devlink_sb_tc_pool_bind_get,164	.sb_tc_pool_bind_set		= ocelot_devlink_sb_tc_pool_bind_set,165	.sb_occ_snapshot		= ocelot_devlink_sb_occ_snapshot,166	.sb_occ_max_clear		= ocelot_devlink_sb_occ_max_clear,167	.sb_occ_port_pool_get		= ocelot_devlink_sb_occ_port_pool_get,168	.sb_occ_tc_port_bind_get	= ocelot_devlink_sb_occ_tc_port_bind_get,169};170 171int ocelot_port_devlink_init(struct ocelot *ocelot, int port,172			     enum devlink_port_flavour flavour)173{174	struct devlink_port *dlp = &ocelot->devlink_ports[port];175	int id_len = sizeof(ocelot->base_mac);176	struct devlink *dl = ocelot->devlink;177	struct devlink_port_attrs attrs = {};178 179	memset(dlp, 0, sizeof(*dlp));180	memcpy(attrs.switch_id.id, &ocelot->base_mac, id_len);181	attrs.switch_id.id_len = id_len;182	attrs.phys.port_number = port;183	attrs.flavour = flavour;184 185	devlink_port_attrs_set(dlp, &attrs);186 187	return devlink_port_register(dl, dlp, port);188}189 190void ocelot_port_devlink_teardown(struct ocelot *ocelot, int port)191{192	struct devlink_port *dlp = &ocelot->devlink_ports[port];193 194	devlink_port_unregister(dlp);195}196 197int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,198			       struct flow_cls_offload *f,199			       bool ingress)200{201	struct ocelot *ocelot = priv->port.ocelot;202	int port = priv->port.index;203 204	if (!ingress)205		return -EOPNOTSUPP;206 207	switch (f->command) {208	case FLOW_CLS_REPLACE:209		return ocelot_cls_flower_replace(ocelot, port, f, ingress);210	case FLOW_CLS_DESTROY:211		return ocelot_cls_flower_destroy(ocelot, port, f, ingress);212	case FLOW_CLS_STATS:213		return ocelot_cls_flower_stats(ocelot, port, f, ingress);214	default:215		return -EOPNOTSUPP;216	}217}218 219static int ocelot_setup_tc_cls_matchall_police(struct ocelot_port_private *priv,220					       struct tc_cls_matchall_offload *f,221					       bool ingress,222					       struct netlink_ext_ack *extack)223{224	struct flow_action_entry *action = &f->rule->action.entries[0];225	struct ocelot *ocelot = priv->port.ocelot;226	struct ocelot_policer pol = { 0 };227	int port = priv->port.index;228	int err;229 230	if (!ingress) {231		NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported");232		return -EOPNOTSUPP;233	}234 235	if (priv->tc.police_id && priv->tc.police_id != f->cookie) {236		NL_SET_ERR_MSG_MOD(extack,237				   "Only one policer per port is supported");238		return -EEXIST;239	}240 241	err = ocelot_policer_validate(&f->rule->action, action, extack);242	if (err)243		return err;244 245	pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8;246	pol.burst = action->police.burst;247 248	err = ocelot_port_policer_add(ocelot, port, &pol);249	if (err) {250		NL_SET_ERR_MSG_MOD(extack, "Could not add policer");251		return err;252	}253 254	priv->tc.police_id = f->cookie;255	priv->tc.offload_cnt++;256 257	return 0;258}259 260static int ocelot_setup_tc_cls_matchall_mirred(struct ocelot_port_private *priv,261					       struct tc_cls_matchall_offload *f,262					       bool ingress,263					       struct netlink_ext_ack *extack)264{265	struct flow_action *action = &f->rule->action;266	struct ocelot *ocelot = priv->port.ocelot;267	struct ocelot_port_private *other_priv;268	const struct flow_action_entry *a;269	int err;270 271	if (f->common.protocol != htons(ETH_P_ALL))272		return -EOPNOTSUPP;273 274	if (!flow_action_basic_hw_stats_check(action, extack))275		return -EOPNOTSUPP;276 277	a = &action->entries[0];278	if (!a->dev)279		return -EINVAL;280 281	if (!ocelot_netdevice_dev_check(a->dev)) {282		NL_SET_ERR_MSG_MOD(extack,283				   "Destination not an ocelot port");284		return -EOPNOTSUPP;285	}286 287	other_priv = netdev_priv(a->dev);288 289	err = ocelot_port_mirror_add(ocelot, priv->port.index,290				     other_priv->port.index, ingress, extack);291	if (err)292		return err;293 294	if (ingress)295		priv->tc.ingress_mirred_id = f->cookie;296	else297		priv->tc.egress_mirred_id = f->cookie;298	priv->tc.offload_cnt++;299 300	return 0;301}302 303static int ocelot_del_tc_cls_matchall_police(struct ocelot_port_private *priv,304					     struct netlink_ext_ack *extack)305{306	struct ocelot *ocelot = priv->port.ocelot;307	int port = priv->port.index;308	int err;309 310	err = ocelot_port_policer_del(ocelot, port);311	if (err) {312		NL_SET_ERR_MSG_MOD(extack,313				   "Could not delete policer");314		return err;315	}316 317	priv->tc.police_id = 0;318	priv->tc.offload_cnt--;319 320	return 0;321}322 323static int ocelot_del_tc_cls_matchall_mirred(struct ocelot_port_private *priv,324					     bool ingress,325					     struct netlink_ext_ack *extack)326{327	struct ocelot *ocelot = priv->port.ocelot;328	int port = priv->port.index;329 330	ocelot_port_mirror_del(ocelot, port, ingress);331 332	if (ingress)333		priv->tc.ingress_mirred_id = 0;334	else335		priv->tc.egress_mirred_id = 0;336	priv->tc.offload_cnt--;337 338	return 0;339}340 341static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,342					struct tc_cls_matchall_offload *f,343					bool ingress)344{345	struct netlink_ext_ack *extack = f->common.extack;346	struct flow_action_entry *action;347 348	switch (f->command) {349	case TC_CLSMATCHALL_REPLACE:350		if (!flow_offload_has_one_action(&f->rule->action)) {351			NL_SET_ERR_MSG_MOD(extack,352					   "Only one action is supported");353			return -EOPNOTSUPP;354		}355 356		if (priv->tc.block_shared) {357			NL_SET_ERR_MSG_MOD(extack,358					   "Matchall offloads not supported on shared blocks");359			return -EOPNOTSUPP;360		}361 362		action = &f->rule->action.entries[0];363 364		switch (action->id) {365		case FLOW_ACTION_POLICE:366			return ocelot_setup_tc_cls_matchall_police(priv, f,367								   ingress,368								   extack);369			break;370		case FLOW_ACTION_MIRRED:371			return ocelot_setup_tc_cls_matchall_mirred(priv, f,372								   ingress,373								   extack);374		default:375			NL_SET_ERR_MSG_MOD(extack, "Unsupported action");376			return -EOPNOTSUPP;377		}378 379		break;380	case TC_CLSMATCHALL_DESTROY:381		action = &f->rule->action.entries[0];382 383		if (f->cookie == priv->tc.police_id)384			return ocelot_del_tc_cls_matchall_police(priv, extack);385		else if (f->cookie == priv->tc.ingress_mirred_id ||386			 f->cookie == priv->tc.egress_mirred_id)387			return ocelot_del_tc_cls_matchall_mirred(priv, ingress,388								 extack);389		else390			return -ENOENT;391 392		break;393	case TC_CLSMATCHALL_STATS:394	default:395		return -EOPNOTSUPP;396	}397}398 399static int ocelot_setup_tc_block_cb(enum tc_setup_type type,400				    void *type_data,401				    void *cb_priv, bool ingress)402{403	struct ocelot_port_private *priv = cb_priv;404 405	if (!tc_cls_can_offload_and_chain0(priv->dev, type_data))406		return -EOPNOTSUPP;407 408	switch (type) {409	case TC_SETUP_CLSMATCHALL:410		return ocelot_setup_tc_cls_matchall(priv, type_data, ingress);411	case TC_SETUP_CLSFLOWER:412		return ocelot_setup_tc_cls_flower(priv, type_data, ingress);413	default:414		return -EOPNOTSUPP;415	}416}417 418static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type,419				       void *type_data,420				       void *cb_priv)421{422	return ocelot_setup_tc_block_cb(type, type_data,423					cb_priv, true);424}425 426static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type,427				       void *type_data,428				       void *cb_priv)429{430	return ocelot_setup_tc_block_cb(type, type_data,431					cb_priv, false);432}433 434static LIST_HEAD(ocelot_block_cb_list);435 436static int ocelot_setup_tc_block(struct ocelot_port_private *priv,437				 struct flow_block_offload *f)438{439	struct flow_block_cb *block_cb;440	flow_setup_cb_t *cb;441 442	if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) {443		cb = ocelot_setup_tc_block_cb_ig;444		priv->tc.block_shared = f->block_shared;445	} else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) {446		cb = ocelot_setup_tc_block_cb_eg;447	} else {448		return -EOPNOTSUPP;449	}450 451	f->driver_block_list = &ocelot_block_cb_list;452 453	switch (f->command) {454	case FLOW_BLOCK_BIND:455		if (flow_block_cb_is_busy(cb, priv, &ocelot_block_cb_list))456			return -EBUSY;457 458		block_cb = flow_block_cb_alloc(cb, priv, priv, NULL);459		if (IS_ERR(block_cb))460			return PTR_ERR(block_cb);461 462		flow_block_cb_add(block_cb, f);463		list_add_tail(&block_cb->driver_list, f->driver_block_list);464		return 0;465	case FLOW_BLOCK_UNBIND:466		block_cb = flow_block_cb_lookup(f->block, cb, priv);467		if (!block_cb)468			return -ENOENT;469 470		flow_block_cb_remove(block_cb, f);471		list_del(&block_cb->driver_list);472		return 0;473	default:474		return -EOPNOTSUPP;475	}476}477 478static int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type,479			   void *type_data)480{481	struct ocelot_port_private *priv = netdev_priv(dev);482 483	switch (type) {484	case TC_SETUP_BLOCK:485		return ocelot_setup_tc_block(priv, type_data);486	default:487		return -EOPNOTSUPP;488	}489	return 0;490}491 492static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,493			       bool untagged)494{495	struct ocelot_port_private *priv = netdev_priv(dev);496	struct ocelot_port *ocelot_port = &priv->port;497	struct ocelot *ocelot = ocelot_port->ocelot;498	int port = priv->port.index;499	int ret;500 501	ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged);502	if (ret)503		return ret;504 505	/* Add the port MAC address to with the right VLAN information */506	ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid,507			  ENTRYTYPE_LOCKED);508 509	return 0;510}511 512static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)513{514	struct ocelot_port_private *priv = netdev_priv(dev);515	struct ocelot *ocelot = priv->port.ocelot;516	int port = priv->port.index;517	int ret;518 519	/* 8021q removes VID 0 on module unload for all interfaces520	 * with VLAN filtering feature. We need to keep it to receive521	 * untagged traffic.522	 */523	if (vid == OCELOT_STANDALONE_PVID)524		return 0;525 526	ret = ocelot_vlan_del(ocelot, port, vid);527	if (ret)528		return ret;529 530	/* Del the port MAC address to with the right VLAN information */531	ocelot_mact_forget(ocelot, dev->dev_addr, vid);532 533	return 0;534}535 536static int ocelot_port_open(struct net_device *dev)537{538	struct ocelot_port_private *priv = netdev_priv(dev);539 540	phylink_start(priv->phylink);541 542	return 0;543}544 545static int ocelot_port_stop(struct net_device *dev)546{547	struct ocelot_port_private *priv = netdev_priv(dev);548 549	phylink_stop(priv->phylink);550 551	return 0;552}553 554static netdev_tx_t ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)555{556	struct ocelot_port_private *priv = netdev_priv(dev);557	struct ocelot_port *ocelot_port = &priv->port;558	struct ocelot *ocelot = ocelot_port->ocelot;559	int port = priv->port.index;560	u32 rew_op = 0;561 562	if (!static_branch_unlikely(&ocelot_fdma_enabled) &&563	    !ocelot_can_inject(ocelot, 0))564		return NETDEV_TX_BUSY;565 566	/* Check if timestamping is needed */567	if (ocelot->ptp && (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {568		struct sk_buff *clone = NULL;569 570		if (ocelot_port_txtstamp_request(ocelot, port, skb, &clone)) {571			kfree_skb(skb);572			return NETDEV_TX_OK;573		}574 575		if (clone)576			OCELOT_SKB_CB(skb)->clone = clone;577 578		rew_op = ocelot_ptp_rew_op(skb);579	}580 581	if (static_branch_unlikely(&ocelot_fdma_enabled)) {582		ocelot_fdma_inject_frame(ocelot, port, rew_op, skb, dev);583	} else {584		ocelot_port_inject_frame(ocelot, port, 0, rew_op, skb);585 586		consume_skb(skb);587	}588 589	return NETDEV_TX_OK;590}591 592enum ocelot_action_type {593	OCELOT_MACT_LEARN,594	OCELOT_MACT_FORGET,595};596 597struct ocelot_mact_work_ctx {598	struct work_struct work;599	struct ocelot *ocelot;600	enum ocelot_action_type type;601	union {602		/* OCELOT_MACT_LEARN */603		struct {604			unsigned char addr[ETH_ALEN];605			u16 vid;606			enum macaccess_entry_type entry_type;607			int pgid;608		} learn;609		/* OCELOT_MACT_FORGET */610		struct {611			unsigned char addr[ETH_ALEN];612			u16 vid;613		} forget;614	};615};616 617#define ocelot_work_to_ctx(x) \618	container_of((x), struct ocelot_mact_work_ctx, work)619 620static void ocelot_mact_work(struct work_struct *work)621{622	struct ocelot_mact_work_ctx *w = ocelot_work_to_ctx(work);623	struct ocelot *ocelot = w->ocelot;624 625	switch (w->type) {626	case OCELOT_MACT_LEARN:627		ocelot_mact_learn(ocelot, w->learn.pgid, w->learn.addr,628				  w->learn.vid, w->learn.entry_type);629		break;630	case OCELOT_MACT_FORGET:631		ocelot_mact_forget(ocelot, w->forget.addr, w->forget.vid);632		break;633	default:634		break;635	}636 637	kfree(w);638}639 640static int ocelot_enqueue_mact_action(struct ocelot *ocelot,641				      const struct ocelot_mact_work_ctx *ctx)642{643	struct ocelot_mact_work_ctx *w = kmemdup(ctx, sizeof(*w), GFP_ATOMIC);644 645	if (!w)646		return -ENOMEM;647 648	w->ocelot = ocelot;649	INIT_WORK(&w->work, ocelot_mact_work);650	queue_work(ocelot->owq, &w->work);651 652	return 0;653}654 655static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr)656{657	struct ocelot_port_private *priv = netdev_priv(dev);658	struct ocelot_port *ocelot_port = &priv->port;659	struct ocelot *ocelot = ocelot_port->ocelot;660	struct ocelot_mact_work_ctx w;661 662	ether_addr_copy(w.forget.addr, addr);663	w.forget.vid = OCELOT_STANDALONE_PVID;664	w.type = OCELOT_MACT_FORGET;665 666	return ocelot_enqueue_mact_action(ocelot, &w);667}668 669static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr)670{671	struct ocelot_port_private *priv = netdev_priv(dev);672	struct ocelot_port *ocelot_port = &priv->port;673	struct ocelot *ocelot = ocelot_port->ocelot;674	struct ocelot_mact_work_ctx w;675 676	ether_addr_copy(w.learn.addr, addr);677	w.learn.vid = OCELOT_STANDALONE_PVID;678	w.learn.pgid = PGID_CPU;679	w.learn.entry_type = ENTRYTYPE_LOCKED;680	w.type = OCELOT_MACT_LEARN;681 682	return ocelot_enqueue_mact_action(ocelot, &w);683}684 685static void ocelot_set_rx_mode(struct net_device *dev)686{687	struct ocelot_port_private *priv = netdev_priv(dev);688	struct ocelot *ocelot = priv->port.ocelot;689	u32 val;690	int i;691 692	/* This doesn't handle promiscuous mode because the bridge core is693	 * setting IFF_PROMISC on all slave interfaces and all frames would be694	 * forwarded to the CPU port.695	 */696	val = GENMASK(ocelot->num_phys_ports - 1, 0);697	for_each_nonreserved_multicast_dest_pgid(ocelot, i)698		ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);699 700	__dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync);701}702 703static int ocelot_port_set_mac_address(struct net_device *dev, void *p)704{705	struct ocelot_port_private *priv = netdev_priv(dev);706	struct ocelot_port *ocelot_port = &priv->port;707	struct ocelot *ocelot = ocelot_port->ocelot;708	const struct sockaddr *addr = p;709 710	/* Learn the new net device MAC address in the mac table. */711	ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data,712			  OCELOT_STANDALONE_PVID, ENTRYTYPE_LOCKED);713	/* Then forget the previous one. */714	ocelot_mact_forget(ocelot, dev->dev_addr, OCELOT_STANDALONE_PVID);715 716	eth_hw_addr_set(dev, addr->sa_data);717	return 0;718}719 720static void ocelot_get_stats64(struct net_device *dev,721			       struct rtnl_link_stats64 *stats)722{723	struct ocelot_port_private *priv = netdev_priv(dev);724	struct ocelot *ocelot = priv->port.ocelot;725	int port = priv->port.index;726 727	return ocelot_port_get_stats64(ocelot, port, stats);728}729 730static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],731			       struct net_device *dev,732			       const unsigned char *addr,733			       u16 vid, u16 flags,734			       struct netlink_ext_ack *extack)735{736	struct ocelot_port_private *priv = netdev_priv(dev);737	struct ocelot_port *ocelot_port = &priv->port;738	struct ocelot *ocelot = ocelot_port->ocelot;739	int port = priv->port.index;740 741	return ocelot_fdb_add(ocelot, port, addr, vid, ocelot_port->bridge);742}743 744static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],745			       struct net_device *dev,746			       const unsigned char *addr, u16 vid,747			       struct netlink_ext_ack *extack)748{749	struct ocelot_port_private *priv = netdev_priv(dev);750	struct ocelot_port *ocelot_port = &priv->port;751	struct ocelot *ocelot = ocelot_port->ocelot;752	int port = priv->port.index;753 754	return ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge);755}756 757static int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid,758				   bool is_static, void *data)759{760	struct ocelot_dump_ctx *dump = data;761	u32 portid = NETLINK_CB(dump->cb->skb).portid;762	u32 seq = dump->cb->nlh->nlmsg_seq;763	struct nlmsghdr *nlh;764	struct ndmsg *ndm;765 766	if (dump->idx < dump->cb->args[2])767		goto skip;768 769	nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,770			sizeof(*ndm), NLM_F_MULTI);771	if (!nlh)772		return -EMSGSIZE;773 774	ndm = nlmsg_data(nlh);775	ndm->ndm_family  = AF_BRIDGE;776	ndm->ndm_pad1    = 0;777	ndm->ndm_pad2    = 0;778	ndm->ndm_flags   = NTF_SELF;779	ndm->ndm_type    = 0;780	ndm->ndm_ifindex = dump->dev->ifindex;781	ndm->ndm_state   = is_static ? NUD_NOARP : NUD_REACHABLE;782 783	if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))784		goto nla_put_failure;785 786	if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))787		goto nla_put_failure;788 789	nlmsg_end(dump->skb, nlh);790 791skip:792	dump->idx++;793	return 0;794 795nla_put_failure:796	nlmsg_cancel(dump->skb, nlh);797	return -EMSGSIZE;798}799 800static int ocelot_port_fdb_dump(struct sk_buff *skb,801				struct netlink_callback *cb,802				struct net_device *dev,803				struct net_device *filter_dev, int *idx)804{805	struct ocelot_port_private *priv = netdev_priv(dev);806	struct ocelot *ocelot = priv->port.ocelot;807	struct ocelot_dump_ctx dump = {808		.dev = dev,809		.skb = skb,810		.cb = cb,811		.idx = *idx,812	};813	int port = priv->port.index;814	int ret;815 816	ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump);817 818	*idx = dump.idx;819 820	return ret;821}822 823static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,824				  u16 vid)825{826	return ocelot_vlan_vid_add(dev, vid, false, false);827}828 829static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,830				   u16 vid)831{832	return ocelot_vlan_vid_del(dev, vid);833}834 835static void ocelot_vlan_mode(struct ocelot *ocelot, int port,836			     netdev_features_t features)837{838	u32 val;839 840	/* Filtering */841	val = ocelot_read(ocelot, ANA_VLANMASK);842	if (features & NETIF_F_HW_VLAN_CTAG_FILTER)843		val |= BIT(port);844	else845		val &= ~BIT(port);846	ocelot_write(ocelot, val, ANA_VLANMASK);847}848 849static int ocelot_set_features(struct net_device *dev,850			       netdev_features_t features)851{852	netdev_features_t changed = dev->features ^ features;853	struct ocelot_port_private *priv = netdev_priv(dev);854	struct ocelot *ocelot = priv->port.ocelot;855	int port = priv->port.index;856 857	if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&858	    priv->tc.offload_cnt) {859		netdev_err(dev,860			   "Cannot disable HW TC offload while offloads active\n");861		return -EBUSY;862	}863 864	if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)865		ocelot_vlan_mode(ocelot, port, features);866 867	return 0;868}869 870static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)871{872	struct ocelot_port_private *priv = netdev_priv(dev);873	struct ocelot *ocelot = priv->port.ocelot;874	int port = priv->port.index;875 876	/* If the attached PHY device isn't capable of timestamping operations,877	 * use our own (when possible).878	 */879	if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) {880		switch (cmd) {881		case SIOCSHWTSTAMP:882			return ocelot_hwstamp_set(ocelot, port, ifr);883		case SIOCGHWTSTAMP:884			return ocelot_hwstamp_get(ocelot, port, ifr);885		}886	}887 888	return phy_mii_ioctl(dev->phydev, ifr, cmd);889}890 891static int ocelot_change_mtu(struct net_device *dev, int new_mtu)892{893	struct ocelot_port_private *priv = netdev_priv(dev);894	struct ocelot_port *ocelot_port = &priv->port;895	struct ocelot *ocelot = ocelot_port->ocelot;896 897	ocelot_port_set_maxlen(ocelot, priv->port.index, new_mtu);898	WRITE_ONCE(dev->mtu, new_mtu);899 900	return 0;901}902 903static const struct net_device_ops ocelot_port_netdev_ops = {904	.ndo_open			= ocelot_port_open,905	.ndo_stop			= ocelot_port_stop,906	.ndo_start_xmit			= ocelot_port_xmit,907	.ndo_change_mtu			= ocelot_change_mtu,908	.ndo_set_rx_mode		= ocelot_set_rx_mode,909	.ndo_set_mac_address		= ocelot_port_set_mac_address,910	.ndo_get_stats64		= ocelot_get_stats64,911	.ndo_fdb_add			= ocelot_port_fdb_add,912	.ndo_fdb_del			= ocelot_port_fdb_del,913	.ndo_fdb_dump			= ocelot_port_fdb_dump,914	.ndo_vlan_rx_add_vid		= ocelot_vlan_rx_add_vid,915	.ndo_vlan_rx_kill_vid		= ocelot_vlan_rx_kill_vid,916	.ndo_set_features		= ocelot_set_features,917	.ndo_setup_tc			= ocelot_setup_tc,918	.ndo_eth_ioctl			= ocelot_ioctl,919};920 921struct net_device *ocelot_port_to_netdev(struct ocelot *ocelot, int port)922{923	struct ocelot_port *ocelot_port = ocelot->ports[port];924	struct ocelot_port_private *priv;925 926	if (!ocelot_port)927		return NULL;928 929	priv = container_of(ocelot_port, struct ocelot_port_private, port);930 931	return priv->dev;932}933 934/* Checks if the net_device instance given to us originates from our driver */935static bool ocelot_netdevice_dev_check(const struct net_device *dev)936{937	return dev->netdev_ops == &ocelot_port_netdev_ops;938}939 940int ocelot_netdev_to_port(struct net_device *dev)941{942	struct ocelot_port_private *priv;943 944	if (!dev || !ocelot_netdevice_dev_check(dev))945		return -EINVAL;946 947	priv = netdev_priv(dev);948 949	return priv->port.index;950}951 952static void ocelot_port_get_strings(struct net_device *netdev, u32 sset,953				    u8 *data)954{955	struct ocelot_port_private *priv = netdev_priv(netdev);956	struct ocelot *ocelot = priv->port.ocelot;957	int port = priv->port.index;958 959	ocelot_get_strings(ocelot, port, sset, data);960}961 962static void ocelot_port_get_ethtool_stats(struct net_device *dev,963					  struct ethtool_stats *stats,964					  u64 *data)965{966	struct ocelot_port_private *priv = netdev_priv(dev);967	struct ocelot *ocelot = priv->port.ocelot;968	int port = priv->port.index;969 970	ocelot_get_ethtool_stats(ocelot, port, data);971}972 973static int ocelot_port_get_sset_count(struct net_device *dev, int sset)974{975	struct ocelot_port_private *priv = netdev_priv(dev);976	struct ocelot *ocelot = priv->port.ocelot;977	int port = priv->port.index;978 979	return ocelot_get_sset_count(ocelot, port, sset);980}981 982static int ocelot_port_get_ts_info(struct net_device *dev,983				   struct kernel_ethtool_ts_info *info)984{985	struct ocelot_port_private *priv = netdev_priv(dev);986	struct ocelot *ocelot = priv->port.ocelot;987	int port = priv->port.index;988 989	if (!ocelot->ptp)990		return ethtool_op_get_ts_info(dev, info);991 992	return ocelot_get_ts_info(ocelot, port, info);993}994 995static const struct ethtool_ops ocelot_ethtool_ops = {996	.get_strings		= ocelot_port_get_strings,997	.get_ethtool_stats	= ocelot_port_get_ethtool_stats,998	.get_sset_count		= ocelot_port_get_sset_count,999	.get_link_ksettings	= phy_ethtool_get_link_ksettings,1000	.set_link_ksettings	= phy_ethtool_set_link_ksettings,1001	.get_ts_info		= ocelot_port_get_ts_info,1002};1003 1004static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port,1005					   u8 state)1006{1007	ocelot_bridge_stp_state_set(ocelot, port, state);1008}1009 1010static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port,1011					unsigned long ageing_clock_t)1012{1013	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);1014	u32 ageing_time = jiffies_to_msecs(ageing_jiffies);1015 1016	ocelot_set_ageing_time(ocelot, ageing_time);1017}1018 1019static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc)1020{1021	u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |1022			    ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |1023			    ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA;1024	u32 val = 0;1025 1026	if (mc)1027		val = cpu_fwd_mcast;1028 1029	ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast,1030		       ANA_PORT_CPU_FWD_CFG, port);1031}1032 1033static int ocelot_port_attr_set(struct net_device *dev, const void *ctx,1034				const struct switchdev_attr *attr,1035				struct netlink_ext_ack *extack)1036{1037	struct ocelot_port_private *priv = netdev_priv(dev);1038	struct ocelot *ocelot = priv->port.ocelot;1039	int port = priv->port.index;1040	int err = 0;1041 1042	if (ctx && ctx != priv)1043		return 0;1044 1045	switch (attr->id) {1046	case SWITCHDEV_ATTR_ID_PORT_STP_STATE:1047		ocelot_port_attr_stp_state_set(ocelot, port, attr->u.stp_state);1048		break;1049	case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:1050		ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time);1051		break;1052	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:1053		ocelot_port_vlan_filtering(ocelot, port, attr->u.vlan_filtering,1054					   extack);1055		break;1056	case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:1057		ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled);1058		break;1059	case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:1060		err = ocelot_port_pre_bridge_flags(ocelot, port,1061						   attr->u.brport_flags);1062		break;1063	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:1064		ocelot_port_bridge_flags(ocelot, port, attr->u.brport_flags);1065		break;1066	default:1067		err = -EOPNOTSUPP;1068		break;1069	}1070 1071	return err;1072}1073 1074static int ocelot_vlan_vid_prepare(struct net_device *dev, u16 vid, bool pvid,1075				   bool untagged, struct netlink_ext_ack *extack)1076{1077	struct ocelot_port_private *priv = netdev_priv(dev);1078	struct ocelot_port *ocelot_port = &priv->port;1079	struct ocelot *ocelot = ocelot_port->ocelot;1080	int port = priv->port.index;1081 1082	return ocelot_vlan_prepare(ocelot, port, vid, pvid, untagged, extack);1083}1084 1085static int ocelot_port_obj_add_vlan(struct net_device *dev,1086				    const struct switchdev_obj_port_vlan *vlan,1087				    struct netlink_ext_ack *extack)1088{1089	bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;1090	bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;1091	int ret;1092 1093	ret = ocelot_vlan_vid_prepare(dev, vlan->vid, pvid, untagged, extack);1094	if (ret)1095		return ret;1096 1097	return ocelot_vlan_vid_add(dev, vlan->vid, pvid, untagged);1098}1099 1100static int ocelot_port_obj_add_mdb(struct net_device *dev,1101				   const struct switchdev_obj_port_mdb *mdb)1102{1103	struct ocelot_port_private *priv = netdev_priv(dev);1104	struct ocelot_port *ocelot_port = &priv->port;1105	struct ocelot *ocelot = ocelot_port->ocelot;1106	int port = priv->port.index;1107 1108	return ocelot_port_mdb_add(ocelot, port, mdb, ocelot_port->bridge);1109}1110 1111static int ocelot_port_obj_del_mdb(struct net_device *dev,1112				   const struct switchdev_obj_port_mdb *mdb)1113{1114	struct ocelot_port_private *priv = netdev_priv(dev);1115	struct ocelot_port *ocelot_port = &priv->port;1116	struct ocelot *ocelot = ocelot_port->ocelot;1117	int port = priv->port.index;1118 1119	return ocelot_port_mdb_del(ocelot, port, mdb, ocelot_port->bridge);1120}1121 1122static int ocelot_port_obj_mrp_add(struct net_device *dev,1123				   const struct switchdev_obj_mrp *mrp)1124{1125	struct ocelot_port_private *priv = netdev_priv(dev);1126	struct ocelot_port *ocelot_port = &priv->port;1127	struct ocelot *ocelot = ocelot_port->ocelot;1128	int port = priv->port.index;1129 1130	return ocelot_mrp_add(ocelot, port, mrp);1131}1132 1133static int ocelot_port_obj_mrp_del(struct net_device *dev,1134				   const struct switchdev_obj_mrp *mrp)1135{1136	struct ocelot_port_private *priv = netdev_priv(dev);1137	struct ocelot_port *ocelot_port = &priv->port;1138	struct ocelot *ocelot = ocelot_port->ocelot;1139	int port = priv->port.index;1140 1141	return ocelot_mrp_del(ocelot, port, mrp);1142}1143 1144static int1145ocelot_port_obj_mrp_add_ring_role(struct net_device *dev,1146				  const struct switchdev_obj_ring_role_mrp *mrp)1147{1148	struct ocelot_port_private *priv = netdev_priv(dev);1149	struct ocelot_port *ocelot_port = &priv->port;1150	struct ocelot *ocelot = ocelot_port->ocelot;1151	int port = priv->port.index;1152 1153	return ocelot_mrp_add_ring_role(ocelot, port, mrp);1154}1155 1156static int1157ocelot_port_obj_mrp_del_ring_role(struct net_device *dev,1158				  const struct switchdev_obj_ring_role_mrp *mrp)1159{1160	struct ocelot_port_private *priv = netdev_priv(dev);1161	struct ocelot_port *ocelot_port = &priv->port;1162	struct ocelot *ocelot = ocelot_port->ocelot;1163	int port = priv->port.index;1164 1165	return ocelot_mrp_del_ring_role(ocelot, port, mrp);1166}1167 1168static int ocelot_port_obj_add(struct net_device *dev, const void *ctx,1169			       const struct switchdev_obj *obj,1170			       struct netlink_ext_ack *extack)1171{1172	struct ocelot_port_private *priv = netdev_priv(dev);1173	int ret = 0;1174 1175	if (ctx && ctx != priv)1176		return 0;1177 1178	switch (obj->id) {1179	case SWITCHDEV_OBJ_ID_PORT_VLAN:1180		ret = ocelot_port_obj_add_vlan(dev,1181					       SWITCHDEV_OBJ_PORT_VLAN(obj),1182					       extack);1183		break;1184	case SWITCHDEV_OBJ_ID_PORT_MDB:1185		ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));1186		break;1187	case SWITCHDEV_OBJ_ID_MRP:1188		ret = ocelot_port_obj_mrp_add(dev, SWITCHDEV_OBJ_MRP(obj));1189		break;1190	case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:1191		ret = ocelot_port_obj_mrp_add_ring_role(dev,1192							SWITCHDEV_OBJ_RING_ROLE_MRP(obj));1193		break;1194	default:1195		return -EOPNOTSUPP;1196	}1197 1198	return ret;1199}1200 1201static int ocelot_port_obj_del(struct net_device *dev, const void *ctx,1202			       const struct switchdev_obj *obj)1203{1204	struct ocelot_port_private *priv = netdev_priv(dev);1205	int ret = 0;1206 1207	if (ctx && ctx != priv)1208		return 0;1209 1210	switch (obj->id) {1211	case SWITCHDEV_OBJ_ID_PORT_VLAN:1212		ret = ocelot_vlan_vid_del(dev,1213					  SWITCHDEV_OBJ_PORT_VLAN(obj)->vid);1214		break;1215	case SWITCHDEV_OBJ_ID_PORT_MDB:1216		ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));1217		break;1218	case SWITCHDEV_OBJ_ID_MRP:1219		ret = ocelot_port_obj_mrp_del(dev, SWITCHDEV_OBJ_MRP(obj));1220		break;1221	case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:1222		ret = ocelot_port_obj_mrp_del_ring_role(dev,1223							SWITCHDEV_OBJ_RING_ROLE_MRP(obj));1224		break;1225	default:1226		return -EOPNOTSUPP;1227	}1228 1229	return ret;1230}1231 1232static void ocelot_inherit_brport_flags(struct ocelot *ocelot, int port,1233					struct net_device *brport_dev)1234{1235	struct switchdev_brport_flags flags = {0};1236	int flag;1237 1238	flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;1239 1240	for_each_set_bit(flag, &flags.mask, 32)1241		if (br_port_flag_is_set(brport_dev, BIT(flag)))1242			flags.val |= BIT(flag);1243 1244	ocelot_port_bridge_flags(ocelot, port, flags);1245}1246 1247static void ocelot_clear_brport_flags(struct ocelot *ocelot, int port)1248{1249	struct switchdev_brport_flags flags;1250 1251	flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;1252	flags.val = flags.mask & ~BR_LEARNING;1253 1254	ocelot_port_bridge_flags(ocelot, port, flags);1255}1256 1257static int ocelot_switchdev_sync(struct ocelot *ocelot, int port,1258				 struct net_device *brport_dev,1259				 struct net_device *bridge_dev,1260				 struct netlink_ext_ack *extack)1261{1262	clock_t ageing_time;1263	u8 stp_state;1264 1265	ocelot_inherit_brport_flags(ocelot, port, brport_dev);1266 1267	stp_state = br_port_get_stp_state(brport_dev);1268	ocelot_bridge_stp_state_set(ocelot, port, stp_state);1269 1270	ageing_time = br_get_ageing_time(bridge_dev);1271	ocelot_port_attr_ageing_set(ocelot, port, ageing_time);1272 1273	return ocelot_port_vlan_filtering(ocelot, port,1274					  br_vlan_enabled(bridge_dev),1275					  extack);1276}1277 1278static int ocelot_switchdev_unsync(struct ocelot *ocelot, int port)1279{1280	int err;1281 1282	err = ocelot_port_vlan_filtering(ocelot, port, false, NULL);1283	if (err)1284		return err;1285 1286	ocelot_clear_brport_flags(ocelot, port);1287 1288	ocelot_bridge_stp_state_set(ocelot, port, BR_STATE_FORWARDING);1289 1290	return 0;1291}1292 1293static int ocelot_bridge_num_get(struct ocelot *ocelot,1294				 const struct net_device *bridge_dev)1295{1296	int bridge_num = ocelot_bridge_num_find(ocelot, bridge_dev);1297 1298	if (bridge_num < 0) {1299		/* First port that offloads this bridge */1300		bridge_num = find_first_zero_bit(&ocelot->bridges,1301						 ocelot->num_phys_ports);1302 1303		set_bit(bridge_num, &ocelot->bridges);1304	}1305 1306	return bridge_num;1307}1308 1309static void ocelot_bridge_num_put(struct ocelot *ocelot,1310				  const struct net_device *bridge_dev,1311				  int bridge_num)1312{1313	/* Check if the bridge is still in use, otherwise it is time1314	 * to clean it up so we can reuse this bridge_num later.1315	 */1316	if (!ocelot_bridge_num_find(ocelot, bridge_dev))1317		clear_bit(bridge_num, &ocelot->bridges);1318}1319 1320static int ocelot_netdevice_bridge_join(struct net_device *dev,1321					struct net_device *brport_dev,1322					struct net_device *bridge,1323					struct netlink_ext_ack *extack)1324{1325	struct ocelot_port_private *priv = netdev_priv(dev);1326	struct ocelot_port *ocelot_port = &priv->port;1327	struct ocelot *ocelot = ocelot_port->ocelot;1328	int port = priv->port.index;1329	int bridge_num, err;1330 1331	bridge_num = ocelot_bridge_num_get(ocelot, bridge);1332 1333	err = ocelot_port_bridge_join(ocelot, port, bridge, bridge_num,1334				      extack);1335	if (err)1336		goto err_join;1337 1338	err = switchdev_bridge_port_offload(brport_dev, dev, priv,1339					    &ocelot_switchdev_nb,1340					    &ocelot_switchdev_blocking_nb,1341					    false, extack);1342	if (err)1343		goto err_switchdev_offload;1344 1345	err = ocelot_switchdev_sync(ocelot, port, brport_dev, bridge, extack);1346	if (err)1347		goto err_switchdev_sync;1348 1349	return 0;1350 1351err_switchdev_sync:1352	switchdev_bridge_port_unoffload(brport_dev, priv,1353					&ocelot_switchdev_nb,1354					&ocelot_switchdev_blocking_nb);1355err_switchdev_offload:1356	ocelot_port_bridge_leave(ocelot, port, bridge);1357err_join:1358	ocelot_bridge_num_put(ocelot, bridge, bridge_num);1359	return err;1360}1361 1362static void ocelot_netdevice_pre_bridge_leave(struct net_device *dev,1363					      struct net_device *brport_dev)1364{1365	struct ocelot_port_private *priv = netdev_priv(dev);1366 1367	switchdev_bridge_port_unoffload(brport_dev, priv,1368					&ocelot_switchdev_nb,1369					&ocelot_switchdev_blocking_nb);1370}1371 1372static int ocelot_netdevice_bridge_leave(struct net_device *dev,1373					 struct net_device *brport_dev,1374					 struct net_device *bridge)1375{1376	struct ocelot_port_private *priv = netdev_priv(dev);1377	struct ocelot_port *ocelot_port = &priv->port;1378	struct ocelot *ocelot = ocelot_port->ocelot;1379	int bridge_num = ocelot_port->bridge_num;1380	int port = priv->port.index;1381	int err;1382 1383	err = ocelot_switchdev_unsync(ocelot, port);1384	if (err)1385		return err;1386 1387	ocelot_port_bridge_leave(ocelot, port, bridge);1388	ocelot_bridge_num_put(ocelot, bridge, bridge_num);1389 1390	return 0;1391}1392 1393static int ocelot_netdevice_lag_join(struct net_device *dev,1394				     struct net_device *bond,1395				     struct netdev_lag_upper_info *info,1396				     struct netlink_ext_ack *extack)1397{1398	struct ocelot_port_private *priv = netdev_priv(dev);1399	struct ocelot_port *ocelot_port = &priv->port;1400	struct ocelot *ocelot = ocelot_port->ocelot;1401	struct net_device *bridge_dev;1402	int port = priv->port.index;1403	int err;1404 1405	err = ocelot_port_lag_join(ocelot, port, bond, info, extack);1406	if (err == -EOPNOTSUPP)1407		/* Offloading not supported, fall back to software LAG */1408		return 0;1409 1410	bridge_dev = netdev_master_upper_dev_get(bond);1411	if (!bridge_dev || !netif_is_bridge_master(bridge_dev))1412		return 0;1413 1414	err = ocelot_netdevice_bridge_join(dev, bond, bridge_dev, extack);1415	if (err)1416		goto err_bridge_join;1417 1418	return 0;1419 1420err_bridge_join:1421	ocelot_port_lag_leave(ocelot, port, bond);1422	return err;1423}1424 1425static void ocelot_netdevice_pre_lag_leave(struct net_device *dev,1426					   struct net_device *bond)1427{1428	struct net_device *bridge_dev;1429 1430	bridge_dev = netdev_master_upper_dev_get(bond);1431	if (!bridge_dev || !netif_is_bridge_master(bridge_dev))1432		return;1433 1434	ocelot_netdevice_pre_bridge_leave(dev, bond);1435}1436 1437static int ocelot_netdevice_lag_leave(struct net_device *dev,1438				      struct net_device *bond)1439{1440	struct ocelot_port_private *priv = netdev_priv(dev);1441	struct ocelot_port *ocelot_port = &priv->port;1442	struct ocelot *ocelot = ocelot_port->ocelot;1443	struct net_device *bridge_dev;1444	int port = priv->port.index;1445 1446	ocelot_port_lag_leave(ocelot, port, bond);1447 1448	bridge_dev = netdev_master_upper_dev_get(bond);1449	if (!bridge_dev || !netif_is_bridge_master(bridge_dev))1450		return 0;1451 1452	return ocelot_netdevice_bridge_leave(dev, bond, bridge_dev);1453}1454 1455static int ocelot_netdevice_changeupper(struct net_device *dev,1456					struct net_device *brport_dev,1457					struct netdev_notifier_changeupper_info *info)1458{1459	struct netlink_ext_ack *extack;1460	int err = 0;1461 1462	extack = netdev_notifier_info_to_extack(&info->info);1463 1464	if (netif_is_bridge_master(info->upper_dev)) {1465		if (info->linking)1466			err = ocelot_netdevice_bridge_join(dev, brport_dev,1467							   info->upper_dev,1468							   extack);1469		else1470			err = ocelot_netdevice_bridge_leave(dev, brport_dev,1471							    info->upper_dev);1472	}1473	if (netif_is_lag_master(info->upper_dev)) {1474		if (info->linking)1475			err = ocelot_netdevice_lag_join(dev, info->upper_dev,1476							info->upper_info, extack);1477		else1478			ocelot_netdevice_lag_leave(dev, info->upper_dev);1479	}1480 1481	return notifier_from_errno(err);1482}1483 1484/* Treat CHANGEUPPER events on an offloaded LAG as individual CHANGEUPPER1485 * events for the lower physical ports of the LAG.1486 * If the LAG upper isn't offloaded, ignore its CHANGEUPPER events.1487 * In case the LAG joined a bridge, notify that we are offloading it and can do1488 * forwarding in hardware towards it.1489 */1490static int1491ocelot_netdevice_lag_changeupper(struct net_device *dev,1492				 struct netdev_notifier_changeupper_info *info)1493{1494	struct net_device *lower;1495	struct list_head *iter;1496	int err = NOTIFY_DONE;1497 1498	netdev_for_each_lower_dev(dev, lower, iter) {1499		struct ocelot_port_private *priv = netdev_priv(lower);1500		struct ocelot_port *ocelot_port = &priv->port;1501 1502		if (ocelot_port->bond != dev)1503			return NOTIFY_OK;1504 1505		err = ocelot_netdevice_changeupper(lower, dev, info);1506		if (err)1507			return notifier_from_errno(err);1508	}1509 1510	return NOTIFY_DONE;1511}1512 1513static int1514ocelot_netdevice_prechangeupper(struct net_device *dev,1515				struct net_device *brport_dev,1516				struct netdev_notifier_changeupper_info *info)1517{1518	if (netif_is_bridge_master(info->upper_dev) && !info->linking)1519		ocelot_netdevice_pre_bridge_leave(dev, brport_dev);1520 1521	if (netif_is_lag_master(info->upper_dev) && !info->linking)1522		ocelot_netdevice_pre_lag_leave(dev, info->upper_dev);1523 1524	return NOTIFY_DONE;1525}1526 1527static int1528ocelot_netdevice_lag_prechangeupper(struct net_device *dev,1529				    struct netdev_notifier_changeupper_info *info)1530{1531	struct net_device *lower;1532	struct list_head *iter;1533	int err = NOTIFY_DONE;1534 1535	netdev_for_each_lower_dev(dev, lower, iter) {1536		struct ocelot_port_private *priv = netdev_priv(lower);1537		struct ocelot_port *ocelot_port = &priv->port;1538 1539		if (ocelot_port->bond != dev)1540			return NOTIFY_OK;1541 1542		err = ocelot_netdevice_prechangeupper(dev, lower, info);1543		if (err)1544			return err;1545	}1546 1547	return NOTIFY_DONE;1548}1549 1550static int1551ocelot_netdevice_changelowerstate(struct net_device *dev,1552				  struct netdev_lag_lower_state_info *info)1553{1554	struct ocelot_port_private *priv = netdev_priv(dev);1555	bool is_active = info->link_up && info->tx_enabled;1556	struct ocelot_port *ocelot_port = &priv->port;1557	struct ocelot *ocelot = ocelot_port->ocelot;1558	int port = priv->port.index;1559 1560	if (!ocelot_port->bond)1561		return NOTIFY_DONE;1562 1563	if (ocelot_port->lag_tx_active == is_active)1564		return NOTIFY_DONE;1565 1566	ocelot_port_lag_change(ocelot, port, is_active);1567 1568	return NOTIFY_OK;1569}1570 1571static int ocelot_netdevice_event(struct notifier_block *unused,1572				  unsigned long event, void *ptr)1573{1574	struct net_device *dev = netdev_notifier_info_to_dev(ptr);1575 1576	switch (event) {1577	case NETDEV_PRECHANGEUPPER: {1578		struct netdev_notifier_changeupper_info *info = ptr;1579 1580		if (ocelot_netdevice_dev_check(dev))1581			return ocelot_netdevice_prechangeupper(dev, dev, info);1582 1583		if (netif_is_lag_master(dev))1584			return ocelot_netdevice_lag_prechangeupper(dev, info);1585 1586		break;1587	}1588	case NETDEV_CHANGEUPPER: {1589		struct netdev_notifier_changeupper_info *info = ptr;1590 1591		if (ocelot_netdevice_dev_check(dev))1592			return ocelot_netdevice_changeupper(dev, dev, info);1593 1594		if (netif_is_lag_master(dev))1595			return ocelot_netdevice_lag_changeupper(dev, info);1596 1597		break;1598	}1599	case NETDEV_CHANGELOWERSTATE: {1600		struct netdev_notifier_changelowerstate_info *info = ptr;1601 1602		if (!ocelot_netdevice_dev_check(dev))1603			break;1604 1605		return ocelot_netdevice_changelowerstate(dev,1606							 info->lower_state_info);1607	}1608	default:1609		break;1610	}1611 1612	return NOTIFY_DONE;1613}1614 1615struct notifier_block ocelot_netdevice_nb __read_mostly = {1616	.notifier_call = ocelot_netdevice_event,1617};1618 1619static int ocelot_switchdev_event(struct notifier_block *unused,1620				  unsigned long event, void *ptr)1621{1622	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);1623	int err;1624 1625	switch (event) {1626	case SWITCHDEV_PORT_ATTR_SET:1627		err = switchdev_handle_port_attr_set(dev, ptr,1628						     ocelot_netdevice_dev_check,1629						     ocelot_port_attr_set);1630		return notifier_from_errno(err);1631	}1632 1633	return NOTIFY_DONE;1634}1635 1636struct notifier_block ocelot_switchdev_nb __read_mostly = {1637	.notifier_call = ocelot_switchdev_event,1638};1639 1640static int ocelot_switchdev_blocking_event(struct notifier_block *unused,1641					   unsigned long event, void *ptr)1642{1643	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);1644	int err;1645 1646	switch (event) {1647		/* Blocking events. */1648	case SWITCHDEV_PORT_OBJ_ADD:1649		err = switchdev_handle_port_obj_add(dev, ptr,1650						    ocelot_netdevice_dev_check,1651						    ocelot_port_obj_add);1652		return notifier_from_errno(err);1653	case SWITCHDEV_PORT_OBJ_DEL:1654		err = switchdev_handle_port_obj_del(dev, ptr,1655						    ocelot_netdevice_dev_check,1656						    ocelot_port_obj_del);1657		return notifier_from_errno(err);1658	case SWITCHDEV_PORT_ATTR_SET:1659		err = switchdev_handle_port_attr_set(dev, ptr,1660						     ocelot_netdevice_dev_check,1661						     ocelot_port_attr_set);1662		return notifier_from_errno(err);1663	}1664 1665	return NOTIFY_DONE;1666}1667 1668struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = {1669	.notifier_call = ocelot_switchdev_blocking_event,1670};1671 1672static void vsc7514_phylink_mac_config(struct phylink_config *config,1673				       unsigned int link_an_mode,1674				       const struct phylink_link_state *state)1675{1676	struct net_device *ndev = to_net_dev(config->dev);1677	struct ocelot_port_private *priv = netdev_priv(ndev);1678	struct ocelot *ocelot = priv->port.ocelot;1679	int port = priv->port.index;1680 1681	ocelot_phylink_mac_config(ocelot, port, link_an_mode, state);1682}1683 1684static void vsc7514_phylink_mac_link_down(struct phylink_config *config,1685					  unsigned int link_an_mode,1686					  phy_interface_t interface)1687{1688	struct net_device *ndev = to_net_dev(config->dev);1689	struct ocelot_port_private *priv = netdev_priv(ndev);1690	struct ocelot *ocelot = priv->port.ocelot;1691	int port = priv->port.index;1692 1693	ocelot_phylink_mac_link_down(ocelot, port, link_an_mode, interface,1694				     OCELOT_MAC_QUIRKS);1695}1696 1697static void vsc7514_phylink_mac_link_up(struct phylink_config *config,1698					struct phy_device *phydev,1699					unsigned int link_an_mode,1700					phy_interface_t interface,1701					int speed, int duplex,1702					bool tx_pause, bool rx_pause)1703{1704	struct net_device *ndev = to_net_dev(config->dev);1705	struct ocelot_port_private *priv = netdev_priv(ndev);1706	struct ocelot *ocelot = priv->port.ocelot;1707	int port = priv->port.index;1708 1709	ocelot_phylink_mac_link_up(ocelot, port, phydev, link_an_mode,1710				   interface, speed, duplex,1711				   tx_pause, rx_pause, OCELOT_MAC_QUIRKS);1712}1713 1714static const struct phylink_mac_ops ocelot_phylink_ops = {1715	.mac_config		= vsc7514_phylink_mac_config,1716	.mac_link_down		= vsc7514_phylink_mac_link_down,1717	.mac_link_up		= vsc7514_phylink_mac_link_up,1718};1719 1720static int ocelot_port_phylink_create(struct ocelot *ocelot, int port,1721				      struct device_node *portnp)1722{1723	struct ocelot_port *ocelot_port = ocelot->ports[port];1724	struct ocelot_port_private *priv;1725	struct device *dev = ocelot->dev;1726	phy_interface_t phy_mode;1727	struct phylink *phylink;1728	int err;1729 1730	of_get_phy_mode(portnp, &phy_mode);1731	/* DT bindings of internal PHY ports are broken and don't1732	 * specify a phy-mode1733	 */1734	if (phy_mode == PHY_INTERFACE_MODE_NA)1735		phy_mode = PHY_INTERFACE_MODE_INTERNAL;1736 1737	if (phy_mode != PHY_INTERFACE_MODE_SGMII &&1738	    phy_mode != PHY_INTERFACE_MODE_QSGMII &&1739	    phy_mode != PHY_INTERFACE_MODE_INTERNAL) {1740		dev_err(dev, "unsupported phy mode %s for port %d\n",1741			phy_modes(phy_mode), port);1742		return -EINVAL;1743	}1744 1745	ocelot_port->phy_mode = phy_mode;1746 1747	err = ocelot_port_configure_serdes(ocelot, port, portnp);1748	if (err)1749		return err;1750 1751	priv = container_of(ocelot_port, struct ocelot_port_private, port);1752 1753	priv->phylink_config.dev = &priv->dev->dev;1754	priv->phylink_config.type = PHYLINK_NETDEV;1755	priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |1756		MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD;1757 1758	__set_bit(ocelot_port->phy_mode,1759		  priv->phylink_config.supported_interfaces);1760 1761	phylink = phylink_create(&priv->phylink_config,1762				 of_fwnode_handle(portnp),1763				 phy_mode, &ocelot_phylink_ops);1764	if (IS_ERR(phylink)) {1765		err = PTR_ERR(phylink);1766		dev_err(dev, "Could not create phylink (%pe)\n", phylink);1767		return err;1768	}1769 1770	priv->phylink = phylink;1771 1772	err = phylink_of_phy_connect(phylink, portnp, 0);1773	if (err) {1774		dev_err(dev, "Could not connect to PHY: %pe\n", ERR_PTR(err));1775		phylink_destroy(phylink);1776		priv->phylink = NULL;1777		return err;1778	}1779 1780	return 0;1781}1782 1783int ocelot_probe_port(struct ocelot *ocelot, int port, struct regmap *target,1784		      struct device_node *portnp)1785{1786	struct ocelot_port_private *priv;1787	struct ocelot_port *ocelot_port;1788	struct net_device *dev;1789	int err;1790 1791	dev = alloc_etherdev(sizeof(struct ocelot_port_private));1792	if (!dev)1793		return -ENOMEM;1794	SET_NETDEV_DEV(dev, ocelot->dev);1795	priv = netdev_priv(dev);1796	priv->dev = dev;1797	ocelot_port = &priv->port;1798	ocelot_port->ocelot = ocelot;1799	ocelot_port->index = port;1800	ocelot_port->target = target;1801	ocelot->ports[port] = ocelot_port;1802 1803	dev->netdev_ops = &ocelot_port_netdev_ops;1804	dev->ethtool_ops = &ocelot_ethtool_ops;1805	dev->max_mtu = OCELOT_JUMBO_MTU;1806 1807	dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS |1808		NETIF_F_HW_TC;1809	dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;1810 1811	err = of_get_ethdev_address(portnp, dev);1812	if (err)1813		eth_hw_addr_gen(dev, ocelot->base_mac, port);1814 1815	ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr,1816			  OCELOT_STANDALONE_PVID, ENTRYTYPE_LOCKED);1817 1818	ocelot_init_port(ocelot, port);1819 1820	err = ocelot_port_phylink_create(ocelot, port, portnp);1821	if (err)1822		goto out;1823 1824	if (ocelot->fdma)1825		ocelot_fdma_netdev_init(ocelot, dev);1826 1827	SET_NETDEV_DEVLINK_PORT(dev, &ocelot->devlink_ports[port]);1828	err = register_netdev(dev);1829	if (err) {1830		dev_err(ocelot->dev, "register_netdev failed\n");1831		goto out_fdma_deinit;1832	}1833 1834	return 0;1835 1836out_fdma_deinit:1837	if (ocelot->fdma)1838		ocelot_fdma_netdev_deinit(ocelot, dev);1839out:1840	ocelot->ports[port] = NULL;1841	free_netdev(dev);1842 1843	return err;1844}1845 1846void ocelot_release_port(struct ocelot_port *ocelot_port)1847{1848	struct ocelot_port_private *priv = container_of(ocelot_port,1849						struct ocelot_port_private,1850						port);1851	struct ocelot *ocelot = ocelot_port->ocelot;1852	struct ocelot_fdma *fdma = ocelot->fdma;1853 1854	unregister_netdev(priv->dev);1855 1856	if (fdma)1857		ocelot_fdma_netdev_deinit(ocelot, priv->dev);1858 1859	if (priv->phylink) {1860		rtnl_lock();1861		phylink_disconnect_phy(priv->phylink);1862		rtnl_unlock();1863 1864		phylink_destroy(priv->phylink);1865	}1866 1867	free_netdev(priv->dev);1868}1869