1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Handling of a single switch port
   4 *
   5 * Copyright (c) 2017 Savoir-faire Linux Inc.
   6 *	Vivien Didelot <vivien.didelot@savoirfairelinux.com>
   7 */
   8
   9#include <linux/if_bridge.h>
  10#include <linux/netdevice.h>
  11#include <linux/notifier.h>
  12#include <linux/of_mdio.h>
  13#include <linux/of_net.h>
  14
  15#include "dsa.h"
  16#include "port.h"
  17#include "slave.h"
  18#include "switch.h"
  19#include "tag_8021q.h"
  20
  21/**
  22 * dsa_port_notify - Notify the switching fabric of changes to a port
  23 * @dp: port on which change occurred
  24 * @e: event, must be of type DSA_NOTIFIER_*
  25 * @v: event-specific value.
  26 *
  27 * Notify all switches in the DSA tree that this port's switch belongs to,
  28 * including this switch itself, of an event. Allows the other switches to
  29 * reconfigure themselves for cross-chip operations. Can also be used to
  30 * reconfigure ports without net_devices (CPU ports, DSA links) whenever
  31 * a user port's state changes.
  32 */
  33static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v)
  34{
  35	return dsa_tree_notify(dp->ds->dst, e, v);
  36}
  37
  38static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp, u16 vid)
  39{
  40	struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
  41	struct switchdev_notifier_fdb_info info = {
  42		.vid = vid,
  43	};
  44
  45	/* When the port becomes standalone it has already left the bridge.
  46	 * Don't notify the bridge in that case.
  47	 */
  48	if (!brport_dev)
  49		return;
  50
  51	call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
  52				 brport_dev, &info.info, NULL);
  53}
  54
  55static void dsa_port_fast_age(const struct dsa_port *dp)
  56{
  57	struct dsa_switch *ds = dp->ds;
  58
  59	if (!ds->ops->port_fast_age)
  60		return;
  61
  62	ds->ops->port_fast_age(ds, dp->index);
  63
  64	/* flush all VLANs */
  65	dsa_port_notify_bridge_fdb_flush(dp, 0);
  66}
  67
  68static int dsa_port_vlan_fast_age(const struct dsa_port *dp, u16 vid)
  69{
  70	struct dsa_switch *ds = dp->ds;
  71	int err;
  72
  73	if (!ds->ops->port_vlan_fast_age)
  74		return -EOPNOTSUPP;
  75
  76	err = ds->ops->port_vlan_fast_age(ds, dp->index, vid);
  77
  78	if (!err)
  79		dsa_port_notify_bridge_fdb_flush(dp, vid);
  80
  81	return err;
  82}
  83
  84static int dsa_port_msti_fast_age(const struct dsa_port *dp, u16 msti)
  85{
  86	DECLARE_BITMAP(vids, VLAN_N_VID) = { 0 };
  87	int err, vid;
  88
  89	err = br_mst_get_info(dsa_port_bridge_dev_get(dp), msti, vids);
  90	if (err)
  91		return err;
  92
  93	for_each_set_bit(vid, vids, VLAN_N_VID) {
  94		err = dsa_port_vlan_fast_age(dp, vid);
  95		if (err)
  96			return err;
  97	}
  98
  99	return 0;
 100}
 101
 102static bool dsa_port_can_configure_learning(struct dsa_port *dp)
 103{
 104	struct switchdev_brport_flags flags = {
 105		.mask = BR_LEARNING,
 106	};
 107	struct dsa_switch *ds = dp->ds;
 108	int err;
 109
 110	if (!ds->ops->port_bridge_flags || !ds->ops->port_pre_bridge_flags)
 111		return false;
 112
 113	err = ds->ops->port_pre_bridge_flags(ds, dp->index, flags, NULL);
 114	return !err;
 115}
 116
 117bool dsa_port_supports_hwtstamp(struct dsa_port *dp, struct ifreq *ifr)
 118{
 119	struct dsa_switch *ds = dp->ds;
 120	int err;
 121
 122	if (!ds->ops->port_hwtstamp_get || !ds->ops->port_hwtstamp_set)
 123		return false;
 124
 125	/* "See through" shim implementations of the "get" method.
 126	 * This will clobber the ifreq structure, but we will either return an
 127	 * error, or the master will overwrite it with proper values.
 128	 */
 129	err = ds->ops->port_hwtstamp_get(ds, dp->index, ifr);
 130	return err != -EOPNOTSUPP;
 131}
 132
 133int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age)
 
 134{
 135	struct dsa_switch *ds = dp->ds;
 136	int port = dp->index;
 137
 138	if (!ds->ops->port_stp_state_set)
 139		return -EOPNOTSUPP;
 140
 141	ds->ops->port_stp_state_set(ds, port, state);
 
 142
 143	if (!dsa_port_can_configure_learning(dp) ||
 144	    (do_fast_age && dp->learning)) {
 145		/* Fast age FDB entries or flush appropriate forwarding database
 146		 * for the given port, if we are moving it from Learning or
 147		 * Forwarding state, to Disabled or Blocking or Listening state.
 148		 * Ports that were standalone before the STP state change don't
 149		 * need to fast age the FDB, since address learning is off in
 150		 * standalone mode.
 151		 */
 152
 153		if ((dp->stp_state == BR_STATE_LEARNING ||
 154		     dp->stp_state == BR_STATE_FORWARDING) &&
 155		    (state == BR_STATE_DISABLED ||
 156		     state == BR_STATE_BLOCKING ||
 157		     state == BR_STATE_LISTENING))
 158			dsa_port_fast_age(dp);
 159	}
 160
 161	dp->stp_state = state;
 162
 163	return 0;
 164}
 165
 166static void dsa_port_set_state_now(struct dsa_port *dp, u8 state,
 167				   bool do_fast_age)
 168{
 169	struct dsa_switch *ds = dp->ds;
 170	int err;
 171
 172	err = dsa_port_set_state(dp, state, do_fast_age);
 173	if (err && err != -EOPNOTSUPP) {
 174		dev_err(ds->dev, "port %d failed to set STP state %u: %pe\n",
 175			dp->index, state, ERR_PTR(err));
 176	}
 177}
 178
 179int dsa_port_set_mst_state(struct dsa_port *dp,
 180			   const struct switchdev_mst_state *state,
 181			   struct netlink_ext_ack *extack)
 182{
 183	struct dsa_switch *ds = dp->ds;
 184	u8 prev_state;
 185	int err;
 186
 187	if (!ds->ops->port_mst_state_set)
 188		return -EOPNOTSUPP;
 189
 190	err = br_mst_get_state(dsa_port_to_bridge_port(dp), state->msti,
 191			       &prev_state);
 192	if (err)
 193		return err;
 194
 195	err = ds->ops->port_mst_state_set(ds, dp->index, state);
 196	if (err)
 197		return err;
 198
 199	if (!(dp->learning &&
 200	      (prev_state == BR_STATE_LEARNING ||
 201	       prev_state == BR_STATE_FORWARDING) &&
 202	      (state->state == BR_STATE_DISABLED ||
 203	       state->state == BR_STATE_BLOCKING ||
 204	       state->state == BR_STATE_LISTENING)))
 205		return 0;
 206
 207	err = dsa_port_msti_fast_age(dp, state->msti);
 208	if (err)
 209		NL_SET_ERR_MSG_MOD(extack,
 210				   "Unable to flush associated VLANs");
 211
 212	return 0;
 213}
 214
 215int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy)
 216{
 217	struct dsa_switch *ds = dp->ds;
 218	int port = dp->index;
 219	int err;
 220
 221	if (ds->ops->port_enable) {
 222		err = ds->ops->port_enable(ds, port, phy);
 223		if (err)
 224			return err;
 225	}
 226
 227	if (!dp->bridge)
 228		dsa_port_set_state_now(dp, BR_STATE_FORWARDING, false);
 229
 230	if (dp->pl)
 231		phylink_start(dp->pl);
 232
 233	return 0;
 234}
 235
 236int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
 237{
 238	int err;
 239
 240	rtnl_lock();
 241	err = dsa_port_enable_rt(dp, phy);
 242	rtnl_unlock();
 243
 244	return err;
 245}
 246
 247void dsa_port_disable_rt(struct dsa_port *dp)
 248{
 249	struct dsa_switch *ds = dp->ds;
 250	int port = dp->index;
 251
 252	if (dp->pl)
 253		phylink_stop(dp->pl);
 254
 255	if (!dp->bridge)
 256		dsa_port_set_state_now(dp, BR_STATE_DISABLED, false);
 257
 258	if (ds->ops->port_disable)
 259		ds->ops->port_disable(ds, port);
 260}
 261
 262void dsa_port_disable(struct dsa_port *dp)
 263{
 264	rtnl_lock();
 265	dsa_port_disable_rt(dp);
 266	rtnl_unlock();
 267}
 268
 269static void dsa_port_reset_vlan_filtering(struct dsa_port *dp,
 270					  struct dsa_bridge bridge)
 271{
 272	struct netlink_ext_ack extack = {0};
 273	bool change_vlan_filtering = false;
 274	struct dsa_switch *ds = dp->ds;
 275	struct dsa_port *other_dp;
 276	bool vlan_filtering;
 277	int err;
 278
 279	if (ds->needs_standalone_vlan_filtering &&
 280	    !br_vlan_enabled(bridge.dev)) {
 281		change_vlan_filtering = true;
 282		vlan_filtering = true;
 283	} else if (!ds->needs_standalone_vlan_filtering &&
 284		   br_vlan_enabled(bridge.dev)) {
 285		change_vlan_filtering = true;
 286		vlan_filtering = false;
 287	}
 288
 289	/* If the bridge was vlan_filtering, the bridge core doesn't trigger an
 290	 * event for changing vlan_filtering setting upon slave ports leaving
 291	 * it. That is a good thing, because that lets us handle it and also
 292	 * handle the case where the switch's vlan_filtering setting is global
 293	 * (not per port). When that happens, the correct moment to trigger the
 294	 * vlan_filtering callback is only when the last port leaves the last
 295	 * VLAN-aware bridge.
 296	 */
 297	if (change_vlan_filtering && ds->vlan_filtering_is_global) {
 298		dsa_switch_for_each_port(other_dp, ds) {
 299			struct net_device *br = dsa_port_bridge_dev_get(other_dp);
 300
 301			if (br && br_vlan_enabled(br)) {
 302				change_vlan_filtering = false;
 303				break;
 304			}
 305		}
 306	}
 307
 308	if (!change_vlan_filtering)
 309		return;
 310
 311	err = dsa_port_vlan_filtering(dp, vlan_filtering, &extack);
 312	if (extack._msg) {
 313		dev_err(ds->dev, "port %d: %s\n", dp->index,
 314			extack._msg);
 315	}
 316	if (err && err != -EOPNOTSUPP) {
 317		dev_err(ds->dev,
 318			"port %d failed to reset VLAN filtering to %d: %pe\n",
 319		       dp->index, vlan_filtering, ERR_PTR(err));
 320	}
 321}
 322
 323static int dsa_port_inherit_brport_flags(struct dsa_port *dp,
 324					 struct netlink_ext_ack *extack)
 325{
 326	const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
 327				   BR_BCAST_FLOOD | BR_PORT_LOCKED;
 328	struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
 329	int flag, err;
 330
 331	for_each_set_bit(flag, &mask, 32) {
 332		struct switchdev_brport_flags flags = {0};
 333
 334		flags.mask = BIT(flag);
 335
 336		if (br_port_flag_is_set(brport_dev, BIT(flag)))
 337			flags.val = BIT(flag);
 338
 339		err = dsa_port_bridge_flags(dp, flags, extack);
 340		if (err && err != -EOPNOTSUPP)
 341			return err;
 342	}
 343
 344	return 0;
 345}
 346
 347static void dsa_port_clear_brport_flags(struct dsa_port *dp)
 348{
 349	const unsigned long val = BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
 350	const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
 351				   BR_BCAST_FLOOD | BR_PORT_LOCKED;
 352	int flag, err;
 353
 354	for_each_set_bit(flag, &mask, 32) {
 355		struct switchdev_brport_flags flags = {0};
 356
 357		flags.mask = BIT(flag);
 358		flags.val = val & BIT(flag);
 359
 360		err = dsa_port_bridge_flags(dp, flags, NULL);
 361		if (err && err != -EOPNOTSUPP)
 362			dev_err(dp->ds->dev,
 363				"failed to clear bridge port flag %lu: %pe\n",
 364				flags.val, ERR_PTR(err));
 365	}
 366}
 367
 368static int dsa_port_switchdev_sync_attrs(struct dsa_port *dp,
 369					 struct netlink_ext_ack *extack)
 370{
 371	struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
 372	struct net_device *br = dsa_port_bridge_dev_get(dp);
 373	int err;
 374
 375	err = dsa_port_inherit_brport_flags(dp, extack);
 376	if (err)
 377		return err;
 378
 379	err = dsa_port_set_state(dp, br_port_get_stp_state(brport_dev), false);
 380	if (err && err != -EOPNOTSUPP)
 381		return err;
 382
 383	err = dsa_port_vlan_filtering(dp, br_vlan_enabled(br), extack);
 384	if (err && err != -EOPNOTSUPP)
 385		return err;
 386
 387	err = dsa_port_ageing_time(dp, br_get_ageing_time(br));
 388	if (err && err != -EOPNOTSUPP)
 389		return err;
 390
 391	return 0;
 392}
 393
 394static void dsa_port_switchdev_unsync_attrs(struct dsa_port *dp,
 395					    struct dsa_bridge bridge)
 396{
 397	/* Configure the port for standalone mode (no address learning,
 398	 * flood everything).
 399	 * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events
 400	 * when the user requests it through netlink or sysfs, but not
 401	 * automatically at port join or leave, so we need to handle resetting
 402	 * the brport flags ourselves. But we even prefer it that way, because
 403	 * otherwise, some setups might never get the notification they need,
 404	 * for example, when a port leaves a LAG that offloads the bridge,
 405	 * it becomes standalone, but as far as the bridge is concerned, no
 406	 * port ever left.
 407	 */
 408	dsa_port_clear_brport_flags(dp);
 409
 410	/* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
 411	 * so allow it to be in BR_STATE_FORWARDING to be kept functional
 412	 */
 413	dsa_port_set_state_now(dp, BR_STATE_FORWARDING, true);
 414
 415	dsa_port_reset_vlan_filtering(dp, bridge);
 416
 417	/* Ageing time may be global to the switch chip, so don't change it
 418	 * here because we have no good reason (or value) to change it to.
 419	 */
 420}
 421
 422static int dsa_port_bridge_create(struct dsa_port *dp,
 423				  struct net_device *br,
 424				  struct netlink_ext_ack *extack)
 425{
 426	struct dsa_switch *ds = dp->ds;
 427	struct dsa_bridge *bridge;
 428
 429	bridge = dsa_tree_bridge_find(ds->dst, br);
 430	if (bridge) {
 431		refcount_inc(&bridge->refcount);
 432		dp->bridge = bridge;
 433		return 0;
 434	}
 435
 436	bridge = kzalloc(sizeof(*bridge), GFP_KERNEL);
 437	if (!bridge)
 438		return -ENOMEM;
 439
 440	refcount_set(&bridge->refcount, 1);
 441
 442	bridge->dev = br;
 443
 444	bridge->num = dsa_bridge_num_get(br, ds->max_num_bridges);
 445	if (ds->max_num_bridges && !bridge->num) {
 446		NL_SET_ERR_MSG_MOD(extack,
 447				   "Range of offloadable bridges exceeded");
 448		kfree(bridge);
 449		return -EOPNOTSUPP;
 450	}
 451
 452	dp->bridge = bridge;
 453
 454	return 0;
 455}
 456
 457static void dsa_port_bridge_destroy(struct dsa_port *dp,
 458				    const struct net_device *br)
 459{
 460	struct dsa_bridge *bridge = dp->bridge;
 461
 462	dp->bridge = NULL;
 463
 464	if (!refcount_dec_and_test(&bridge->refcount))
 465		return;
 466
 467	if (bridge->num)
 468		dsa_bridge_num_put(br, bridge->num);
 469
 470	kfree(bridge);
 471}
 472
 473static bool dsa_port_supports_mst(struct dsa_port *dp)
 474{
 475	struct dsa_switch *ds = dp->ds;
 476
 477	return ds->ops->vlan_msti_set &&
 478		ds->ops->port_mst_state_set &&
 479		ds->ops->port_vlan_fast_age &&
 480		dsa_port_can_configure_learning(dp);
 481}
 482
 483int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
 484			 struct netlink_ext_ack *extack)
 485{
 486	struct dsa_notifier_bridge_info info = {
 487		.dp = dp,
 488		.extack = extack,
 
 489	};
 490	struct net_device *dev = dp->slave;
 491	struct net_device *brport_dev;
 492	int err;
 493
 494	if (br_mst_enabled(br) && !dsa_port_supports_mst(dp))
 495		return -EOPNOTSUPP;
 
 
 496
 497	/* Here the interface is already bridged. Reflect the current
 498	 * configuration so that drivers can program their chips accordingly.
 499	 */
 500	err = dsa_port_bridge_create(dp, br, extack);
 501	if (err)
 502		return err;
 503
 504	brport_dev = dsa_port_to_bridge_port(dp);
 505
 506	info.bridge = *dp->bridge;
 507	err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info);
 508	if (err)
 509		goto out_rollback;
 510
 511	/* Drivers which support bridge TX forwarding should set this */
 512	dp->bridge->tx_fwd_offload = info.tx_fwd_offload;
 513
 514	err = switchdev_bridge_port_offload(brport_dev, dev, dp,
 515					    &dsa_slave_switchdev_notifier,
 516					    &dsa_slave_switchdev_blocking_notifier,
 517					    dp->bridge->tx_fwd_offload, extack);
 518	if (err)
 519		goto out_rollback_unbridge;
 520
 521	err = dsa_port_switchdev_sync_attrs(dp, extack);
 522	if (err)
 523		goto out_rollback_unoffload;
 524
 525	return 0;
 
 
 
 
 526
 527out_rollback_unoffload:
 528	switchdev_bridge_port_unoffload(brport_dev, dp,
 529					&dsa_slave_switchdev_notifier,
 530					&dsa_slave_switchdev_blocking_notifier);
 531	dsa_flush_workqueue();
 532out_rollback_unbridge:
 533	dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
 534out_rollback:
 535	dsa_port_bridge_destroy(dp, br);
 536	return err;
 537}
 538
 539void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br)
 540{
 541	struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
 542
 543	/* Don't try to unoffload something that is not offloaded */
 544	if (!brport_dev)
 545		return;
 546
 547	switchdev_bridge_port_unoffload(brport_dev, dp,
 548					&dsa_slave_switchdev_notifier,
 549					&dsa_slave_switchdev_blocking_notifier);
 550
 551	dsa_flush_workqueue();
 552}
 553
 554void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
 555{
 556	struct dsa_notifier_bridge_info info = {
 557		.dp = dp,
 
 
 558	};
 559	int err;
 560
 561	/* If the port could not be offloaded to begin with, then
 562	 * there is nothing to do.
 563	 */
 564	if (!dp->bridge)
 565		return;
 566
 567	info.bridge = *dp->bridge;
 568
 569	/* Here the port is already unbridged. Reflect the current configuration
 570	 * so that drivers can program their chips accordingly.
 571	 */
 572	dsa_port_bridge_destroy(dp, br);
 573
 574	err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
 575	if (err)
 576		dev_err(dp->ds->dev,
 577			"port %d failed to notify DSA_NOTIFIER_BRIDGE_LEAVE: %pe\n",
 578			dp->index, ERR_PTR(err));
 579
 580	dsa_port_switchdev_unsync_attrs(dp, info.bridge);
 581}
 582
 583int dsa_port_lag_change(struct dsa_port *dp,
 584			struct netdev_lag_lower_state_info *linfo)
 585{
 586	struct dsa_notifier_lag_info info = {
 587		.dp = dp,
 588	};
 589	bool tx_enabled;
 590
 591	if (!dp->lag)
 592		return 0;
 593
 594	/* On statically configured aggregates (e.g. loadbalance
 595	 * without LACP) ports will always be tx_enabled, even if the
 596	 * link is down. Thus we require both link_up and tx_enabled
 597	 * in order to include it in the tx set.
 598	 */
 599	tx_enabled = linfo->link_up && linfo->tx_enabled;
 600
 601	if (tx_enabled == dp->lag_tx_enabled)
 602		return 0;
 603
 604	dp->lag_tx_enabled = tx_enabled;
 605
 606	return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info);
 607}
 608
 609static int dsa_port_lag_create(struct dsa_port *dp,
 610			       struct net_device *lag_dev)
 611{
 612	struct dsa_switch *ds = dp->ds;
 613	struct dsa_lag *lag;
 614
 615	lag = dsa_tree_lag_find(ds->dst, lag_dev);
 616	if (lag) {
 617		refcount_inc(&lag->refcount);
 618		dp->lag = lag;
 619		return 0;
 620	}
 621
 622	lag = kzalloc(sizeof(*lag), GFP_KERNEL);
 623	if (!lag)
 624		return -ENOMEM;
 625
 626	refcount_set(&lag->refcount, 1);
 627	mutex_init(&lag->fdb_lock);
 628	INIT_LIST_HEAD(&lag->fdbs);
 629	lag->dev = lag_dev;
 630	dsa_lag_map(ds->dst, lag);
 631	dp->lag = lag;
 632
 633	return 0;
 634}
 635
 636static void dsa_port_lag_destroy(struct dsa_port *dp)
 637{
 638	struct dsa_lag *lag = dp->lag;
 639
 640	dp->lag = NULL;
 641	dp->lag_tx_enabled = false;
 642
 643	if (!refcount_dec_and_test(&lag->refcount))
 644		return;
 645
 646	WARN_ON(!list_empty(&lag->fdbs));
 647	dsa_lag_unmap(dp->ds->dst, lag);
 648	kfree(lag);
 649}
 650
 651int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev,
 652		      struct netdev_lag_upper_info *uinfo,
 653		      struct netlink_ext_ack *extack)
 654{
 655	struct dsa_notifier_lag_info info = {
 656		.dp = dp,
 657		.info = uinfo,
 658		.extack = extack,
 659	};
 660	struct net_device *bridge_dev;
 661	int err;
 662
 663	err = dsa_port_lag_create(dp, lag_dev);
 664	if (err)
 665		goto err_lag_create;
 666
 667	info.lag = *dp->lag;
 668	err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info);
 669	if (err)
 670		goto err_lag_join;
 671
 672	bridge_dev = netdev_master_upper_dev_get(lag_dev);
 673	if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
 674		return 0;
 675
 676	err = dsa_port_bridge_join(dp, bridge_dev, extack);
 677	if (err)
 678		goto err_bridge_join;
 679
 680	return 0;
 681
 682err_bridge_join:
 683	dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
 684err_lag_join:
 685	dsa_port_lag_destroy(dp);
 686err_lag_create:
 687	return err;
 688}
 689
 690void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag_dev)
 691{
 692	struct net_device *br = dsa_port_bridge_dev_get(dp);
 693
 694	if (br)
 695		dsa_port_pre_bridge_leave(dp, br);
 696}
 697
 698void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev)
 699{
 700	struct net_device *br = dsa_port_bridge_dev_get(dp);
 701	struct dsa_notifier_lag_info info = {
 702		.dp = dp,
 703	};
 704	int err;
 705
 706	if (!dp->lag)
 707		return;
 708
 709	/* Port might have been part of a LAG that in turn was
 710	 * attached to a bridge.
 711	 */
 712	if (br)
 713		dsa_port_bridge_leave(dp, br);
 714
 715	info.lag = *dp->lag;
 716
 717	dsa_port_lag_destroy(dp);
 718
 719	err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
 720	if (err)
 721		dev_err(dp->ds->dev,
 722			"port %d failed to notify DSA_NOTIFIER_LAG_LEAVE: %pe\n",
 723			dp->index, ERR_PTR(err));
 724}
 725
 726/* Must be called under rcu_read_lock() */
 727static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp,
 728					      bool vlan_filtering,
 729					      struct netlink_ext_ack *extack)
 730{
 731	struct dsa_switch *ds = dp->ds;
 732	struct dsa_port *other_dp;
 733	int err;
 734
 735	/* VLAN awareness was off, so the question is "can we turn it on".
 736	 * We may have had 8021q uppers, those need to go. Make sure we don't
 737	 * enter an inconsistent state: deny changing the VLAN awareness state
 738	 * as long as we have 8021q uppers.
 739	 */
 740	if (vlan_filtering && dsa_port_is_user(dp)) {
 741		struct net_device *br = dsa_port_bridge_dev_get(dp);
 742		struct net_device *upper_dev, *slave = dp->slave;
 743		struct list_head *iter;
 744
 745		netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
 746			struct bridge_vlan_info br_info;
 747			u16 vid;
 748
 749			if (!is_vlan_dev(upper_dev))
 750				continue;
 751
 752			vid = vlan_dev_vlan_id(upper_dev);
 753
 754			/* br_vlan_get_info() returns -EINVAL or -ENOENT if the
 755			 * device, respectively the VID is not found, returning
 756			 * 0 means success, which is a failure for us here.
 757			 */
 758			err = br_vlan_get_info(br, vid, &br_info);
 759			if (err == 0) {
 760				NL_SET_ERR_MSG_MOD(extack,
 761						   "Must first remove VLAN uppers having VIDs also present in bridge");
 762				return false;
 763			}
 764		}
 765	}
 766
 767	if (!ds->vlan_filtering_is_global)
 768		return true;
 769
 770	/* For cases where enabling/disabling VLAN awareness is global to the
 771	 * switch, we need to handle the case where multiple bridges span
 772	 * different ports of the same switch device and one of them has a
 773	 * different setting than what is being requested.
 774	 */
 775	dsa_switch_for_each_port(other_dp, ds) {
 776		struct net_device *other_br = dsa_port_bridge_dev_get(other_dp);
 777
 
 
 
 778		/* If it's the same bridge, it also has same
 779		 * vlan_filtering setting => no need to check
 780		 */
 781		if (!other_br || other_br == dsa_port_bridge_dev_get(dp))
 782			continue;
 783
 784		if (br_vlan_enabled(other_br) != vlan_filtering) {
 785			NL_SET_ERR_MSG_MOD(extack,
 786					   "VLAN filtering is a global setting");
 787			return false;
 788		}
 789	}
 790	return true;
 791}
 792
 793int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
 794			    struct netlink_ext_ack *extack)
 795{
 796	bool old_vlan_filtering = dsa_port_is_vlan_filtering(dp);
 797	struct dsa_switch *ds = dp->ds;
 798	bool apply;
 799	int err;
 800
 
 
 
 
 801	if (!ds->ops->port_vlan_filtering)
 802		return -EOPNOTSUPP;
 803
 804	/* We are called from dsa_slave_switchdev_blocking_event(),
 805	 * which is not under rcu_read_lock(), unlike
 806	 * dsa_slave_switchdev_event().
 807	 */
 808	rcu_read_lock();
 809	apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack);
 810	rcu_read_unlock();
 811	if (!apply)
 812		return -EINVAL;
 813
 814	if (dsa_port_is_vlan_filtering(dp) == vlan_filtering)
 815		return 0;
 816
 817	err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering,
 818					   extack);
 819	if (err)
 820		return err;
 821
 822	if (ds->vlan_filtering_is_global) {
 823		struct dsa_port *other_dp;
 824
 825		ds->vlan_filtering = vlan_filtering;
 826
 827		dsa_switch_for_each_user_port(other_dp, ds) {
 828			struct net_device *slave = other_dp->slave;
 829
 830			/* We might be called in the unbind path, so not
 831			 * all slave devices might still be registered.
 832			 */
 833			if (!slave)
 834				continue;
 835
 836			err = dsa_slave_manage_vlan_filtering(slave,
 837							      vlan_filtering);
 838			if (err)
 839				goto restore;
 840		}
 841	} else {
 842		dp->vlan_filtering = vlan_filtering;
 843
 844		err = dsa_slave_manage_vlan_filtering(dp->slave,
 845						      vlan_filtering);
 846		if (err)
 847			goto restore;
 848	}
 849
 850	return 0;
 851
 852restore:
 853	ds->ops->port_vlan_filtering(ds, dp->index, old_vlan_filtering, NULL);
 854
 855	if (ds->vlan_filtering_is_global)
 856		ds->vlan_filtering = old_vlan_filtering;
 857	else
 858		dp->vlan_filtering = old_vlan_filtering;
 859
 860	return err;
 861}
 862
 863/* This enforces legacy behavior for switch drivers which assume they can't
 864 * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0
 865 */
 866bool dsa_port_skip_vlan_configuration(struct dsa_port *dp)
 867{
 868	struct net_device *br = dsa_port_bridge_dev_get(dp);
 869	struct dsa_switch *ds = dp->ds;
 870
 871	if (!br)
 872		return false;
 873
 874	return !ds->configure_vlan_while_not_filtering && !br_vlan_enabled(br);
 875}
 876
 877int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock)
 878{
 879	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
 880	unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
 881	struct dsa_notifier_ageing_time_info info;
 882	int err;
 883
 884	info.ageing_time = ageing_time;
 885
 886	err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
 887	if (err)
 888		return err;
 889
 890	dp->ageing_time = ageing_time;
 891
 892	return 0;
 893}
 894
 895int dsa_port_mst_enable(struct dsa_port *dp, bool on,
 896			struct netlink_ext_ack *extack)
 897{
 898	if (on && !dsa_port_supports_mst(dp)) {
 899		NL_SET_ERR_MSG_MOD(extack, "Hardware does not support MST");
 900		return -EINVAL;
 901	}
 902
 903	return 0;
 904}
 905
 906int dsa_port_pre_bridge_flags(const struct dsa_port *dp,
 907			      struct switchdev_brport_flags flags,
 908			      struct netlink_ext_ack *extack)
 909{
 910	struct dsa_switch *ds = dp->ds;
 911
 912	if (!ds->ops->port_pre_bridge_flags)
 
 913		return -EINVAL;
 914
 915	return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack);
 916}
 917
 918int dsa_port_bridge_flags(struct dsa_port *dp,
 919			  struct switchdev_brport_flags flags,
 920			  struct netlink_ext_ack *extack)
 921{
 922	struct dsa_switch *ds = dp->ds;
 923	int err;
 924
 925	if (!ds->ops->port_bridge_flags)
 926		return -EOPNOTSUPP;
 927
 928	err = ds->ops->port_bridge_flags(ds, dp->index, flags, extack);
 929	if (err)
 930		return err;
 931
 932	if (flags.mask & BR_LEARNING) {
 933		bool learning = flags.val & BR_LEARNING;
 934
 935		if (learning == dp->learning)
 936			return 0;
 937
 938		if ((dp->learning && !learning) &&
 939		    (dp->stp_state == BR_STATE_LEARNING ||
 940		     dp->stp_state == BR_STATE_FORWARDING))
 941			dsa_port_fast_age(dp);
 942
 943		dp->learning = learning;
 944	}
 945
 946	return 0;
 947}
 948
 949void dsa_port_set_host_flood(struct dsa_port *dp, bool uc, bool mc)
 950{
 951	struct dsa_switch *ds = dp->ds;
 952
 953	if (ds->ops->port_set_host_flood)
 954		ds->ops->port_set_host_flood(ds, dp->index, uc, mc);
 955}
 956
 957int dsa_port_vlan_msti(struct dsa_port *dp,
 958		       const struct switchdev_vlan_msti *msti)
 959{
 960	struct dsa_switch *ds = dp->ds;
 
 961
 962	if (!ds->ops->vlan_msti_set)
 963		return -EOPNOTSUPP;
 964
 965	return ds->ops->vlan_msti_set(ds, *dp->bridge, msti);
 966}
 967
 968int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu)
 969{
 970	struct dsa_notifier_mtu_info info = {
 971		.dp = dp,
 972		.mtu = new_mtu,
 973	};
 974
 975	return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info);
 976}
 977
 978int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
 979		     u16 vid)
 980{
 981	struct dsa_notifier_fdb_info info = {
 982		.dp = dp,
 
 983		.addr = addr,
 984		.vid = vid,
 985		.db = {
 986			.type = DSA_DB_BRIDGE,
 987			.bridge = *dp->bridge,
 988		},
 989	};
 990
 991	/* Refcounting takes bridge.num as a key, and should be global for all
 992	 * bridges in the absence of FDB isolation, and per bridge otherwise.
 993	 * Force the bridge.num to zero here in the absence of FDB isolation.
 994	 */
 995	if (!dp->ds->fdb_isolation)
 996		info.db.bridge.num = 0;
 997
 998	return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
 999}
1000
1001int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
1002		     u16 vid)
1003{
1004	struct dsa_notifier_fdb_info info = {
1005		.dp = dp,
1006		.addr = addr,
1007		.vid = vid,
1008		.db = {
1009			.type = DSA_DB_BRIDGE,
1010			.bridge = *dp->bridge,
1011		},
1012	};
1013
1014	if (!dp->ds->fdb_isolation)
1015		info.db.bridge.num = 0;
1016
1017	return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
1018}
1019
1020static int dsa_port_host_fdb_add(struct dsa_port *dp,
1021				 const unsigned char *addr, u16 vid,
1022				 struct dsa_db db)
1023{
1024	struct dsa_notifier_fdb_info info = {
1025		.dp = dp,
1026		.addr = addr,
1027		.vid = vid,
1028		.db = db,
1029	};
1030
1031	if (!dp->ds->fdb_isolation)
1032		info.db.bridge.num = 0;
1033
1034	return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_ADD, &info);
1035}
1036
1037int dsa_port_standalone_host_fdb_add(struct dsa_port *dp,
1038				     const unsigned char *addr, u16 vid)
1039{
1040	struct dsa_db db = {
1041		.type = DSA_DB_PORT,
1042		.dp = dp,
1043	};
1044
1045	return dsa_port_host_fdb_add(dp, addr, vid, db);
1046}
1047
1048int dsa_port_bridge_host_fdb_add(struct dsa_port *dp,
1049				 const unsigned char *addr, u16 vid)
1050{
1051	struct net_device *master = dsa_port_to_master(dp);
1052	struct dsa_db db = {
1053		.type = DSA_DB_BRIDGE,
1054		.bridge = *dp->bridge,
1055	};
1056	int err;
1057
1058	/* Avoid a call to __dev_set_promiscuity() on the master, which
1059	 * requires rtnl_lock(), since we can't guarantee that is held here,
1060	 * and we can't take it either.
1061	 */
1062	if (master->priv_flags & IFF_UNICAST_FLT) {
1063		err = dev_uc_add(master, addr);
1064		if (err)
1065			return err;
1066	}
1067
1068	return dsa_port_host_fdb_add(dp, addr, vid, db);
1069}
1070
1071static int dsa_port_host_fdb_del(struct dsa_port *dp,
1072				 const unsigned char *addr, u16 vid,
1073				 struct dsa_db db)
1074{
1075	struct dsa_notifier_fdb_info info = {
1076		.dp = dp,
1077		.addr = addr,
1078		.vid = vid,
1079		.db = db,
1080	};
1081
1082	if (!dp->ds->fdb_isolation)
1083		info.db.bridge.num = 0;
1084
1085	return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_DEL, &info);
1086}
1087
1088int dsa_port_standalone_host_fdb_del(struct dsa_port *dp,
1089				     const unsigned char *addr, u16 vid)
1090{
1091	struct dsa_db db = {
1092		.type = DSA_DB_PORT,
1093		.dp = dp,
1094	};
1095
1096	return dsa_port_host_fdb_del(dp, addr, vid, db);
1097}
1098
1099int dsa_port_bridge_host_fdb_del(struct dsa_port *dp,
1100				 const unsigned char *addr, u16 vid)
1101{
1102	struct net_device *master = dsa_port_to_master(dp);
1103	struct dsa_db db = {
1104		.type = DSA_DB_BRIDGE,
1105		.bridge = *dp->bridge,
1106	};
1107	int err;
1108
1109	if (master->priv_flags & IFF_UNICAST_FLT) {
1110		err = dev_uc_del(master, addr);
1111		if (err)
1112			return err;
1113	}
1114
1115	return dsa_port_host_fdb_del(dp, addr, vid, db);
1116}
1117
1118int dsa_port_lag_fdb_add(struct dsa_port *dp, const unsigned char *addr,
1119			 u16 vid)
1120{
1121	struct dsa_notifier_lag_fdb_info info = {
1122		.lag = dp->lag,
1123		.addr = addr,
1124		.vid = vid,
1125		.db = {
1126			.type = DSA_DB_BRIDGE,
1127			.bridge = *dp->bridge,
1128		},
1129	};
1130
1131	if (!dp->ds->fdb_isolation)
1132		info.db.bridge.num = 0;
1133
1134	return dsa_port_notify(dp, DSA_NOTIFIER_LAG_FDB_ADD, &info);
1135}
1136
1137int dsa_port_lag_fdb_del(struct dsa_port *dp, const unsigned char *addr,
1138			 u16 vid)
1139{
1140	struct dsa_notifier_lag_fdb_info info = {
1141		.lag = dp->lag,
1142		.addr = addr,
1143		.vid = vid,
1144		.db = {
1145			.type = DSA_DB_BRIDGE,
1146			.bridge = *dp->bridge,
1147		},
1148	};
1149
1150	if (!dp->ds->fdb_isolation)
1151		info.db.bridge.num = 0;
1152
1153	return dsa_port_notify(dp, DSA_NOTIFIER_LAG_FDB_DEL, &info);
1154}
1155
1156int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data)
1157{
1158	struct dsa_switch *ds = dp->ds;
1159	int port = dp->index;
1160
1161	if (!ds->ops->port_fdb_dump)
1162		return -EOPNOTSUPP;
1163
1164	return ds->ops->port_fdb_dump(ds, port, cb, data);
1165}
1166
1167int dsa_port_mdb_add(const struct dsa_port *dp,
1168		     const struct switchdev_obj_port_mdb *mdb)
 
1169{
1170	struct dsa_notifier_mdb_info info = {
1171		.dp = dp,
 
 
1172		.mdb = mdb,
1173		.db = {
1174			.type = DSA_DB_BRIDGE,
1175			.bridge = *dp->bridge,
1176		},
1177	};
1178
1179	if (!dp->ds->fdb_isolation)
1180		info.db.bridge.num = 0;
1181
1182	return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
1183}
1184
1185int dsa_port_mdb_del(const struct dsa_port *dp,
1186		     const struct switchdev_obj_port_mdb *mdb)
1187{
1188	struct dsa_notifier_mdb_info info = {
1189		.dp = dp,
 
1190		.mdb = mdb,
1191		.db = {
1192			.type = DSA_DB_BRIDGE,
1193			.bridge = *dp->bridge,
1194		},
1195	};
1196
1197	if (!dp->ds->fdb_isolation)
1198		info.db.bridge.num = 0;
1199
1200	return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
1201}
1202
1203static int dsa_port_host_mdb_add(const struct dsa_port *dp,
1204				 const struct switchdev_obj_port_mdb *mdb,
1205				 struct dsa_db db)
1206{
1207	struct dsa_notifier_mdb_info info = {
1208		.dp = dp,
1209		.mdb = mdb,
1210		.db = db,
1211	};
1212
1213	if (!dp->ds->fdb_isolation)
1214		info.db.bridge.num = 0;
1215
1216	return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_ADD, &info);
1217}
1218
1219int dsa_port_standalone_host_mdb_add(const struct dsa_port *dp,
1220				     const struct switchdev_obj_port_mdb *mdb)
1221{
1222	struct dsa_db db = {
1223		.type = DSA_DB_PORT,
1224		.dp = dp,
1225	};
1226
1227	return dsa_port_host_mdb_add(dp, mdb, db);
1228}
1229
1230int dsa_port_bridge_host_mdb_add(const struct dsa_port *dp,
1231				 const struct switchdev_obj_port_mdb *mdb)
1232{
1233	struct net_device *master = dsa_port_to_master(dp);
1234	struct dsa_db db = {
1235		.type = DSA_DB_BRIDGE,
1236		.bridge = *dp->bridge,
1237	};
1238	int err;
1239
1240	err = dev_mc_add(master, mdb->addr);
1241	if (err)
1242		return err;
1243
1244	return dsa_port_host_mdb_add(dp, mdb, db);
1245}
1246
1247static int dsa_port_host_mdb_del(const struct dsa_port *dp,
1248				 const struct switchdev_obj_port_mdb *mdb,
1249				 struct dsa_db db)
1250{
1251	struct dsa_notifier_mdb_info info = {
1252		.dp = dp,
1253		.mdb = mdb,
1254		.db = db,
1255	};
1256
1257	if (!dp->ds->fdb_isolation)
1258		info.db.bridge.num = 0;
1259
1260	return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_DEL, &info);
1261}
1262
1263int dsa_port_standalone_host_mdb_del(const struct dsa_port *dp,
1264				     const struct switchdev_obj_port_mdb *mdb)
1265{
1266	struct dsa_db db = {
1267		.type = DSA_DB_PORT,
1268		.dp = dp,
1269	};
1270
1271	return dsa_port_host_mdb_del(dp, mdb, db);
1272}
1273
1274int dsa_port_bridge_host_mdb_del(const struct dsa_port *dp,
1275				 const struct switchdev_obj_port_mdb *mdb)
1276{
1277	struct net_device *master = dsa_port_to_master(dp);
1278	struct dsa_db db = {
1279		.type = DSA_DB_BRIDGE,
1280		.bridge = *dp->bridge,
1281	};
1282	int err;
1283
1284	err = dev_mc_del(master, mdb->addr);
1285	if (err)
1286		return err;
1287
1288	return dsa_port_host_mdb_del(dp, mdb, db);
1289}
1290
1291int dsa_port_vlan_add(struct dsa_port *dp,
1292		      const struct switchdev_obj_port_vlan *vlan,
1293		      struct netlink_ext_ack *extack)
1294{
1295	struct dsa_notifier_vlan_info info = {
1296		.dp = dp,
 
 
1297		.vlan = vlan,
1298		.extack = extack,
1299	};
1300
1301	return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
1302}
1303
1304int dsa_port_vlan_del(struct dsa_port *dp,
1305		      const struct switchdev_obj_port_vlan *vlan)
1306{
1307	struct dsa_notifier_vlan_info info = {
1308		.dp = dp,
 
1309		.vlan = vlan,
1310	};
1311
1312	return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
1313}
1314
1315int dsa_port_host_vlan_add(struct dsa_port *dp,
1316			   const struct switchdev_obj_port_vlan *vlan,
1317			   struct netlink_ext_ack *extack)
1318{
1319	struct net_device *master = dsa_port_to_master(dp);
1320	struct dsa_notifier_vlan_info info = {
1321		.dp = dp,
1322		.vlan = vlan,
1323		.extack = extack,
1324	};
 
1325	int err;
1326
1327	err = dsa_port_notify(dp, DSA_NOTIFIER_HOST_VLAN_ADD, &info);
1328	if (err && err != -EOPNOTSUPP)
 
1329		return err;
1330
1331	vlan_vid_add(master, htons(ETH_P_8021Q), vlan->vid);
1332
1333	return err;
1334}
 
1335
1336int dsa_port_host_vlan_del(struct dsa_port *dp,
1337			   const struct switchdev_obj_port_vlan *vlan)
1338{
1339	struct net_device *master = dsa_port_to_master(dp);
1340	struct dsa_notifier_vlan_info info = {
1341		.dp = dp,
1342		.vlan = vlan,
1343	};
1344	int err;
1345
1346	err = dsa_port_notify(dp, DSA_NOTIFIER_HOST_VLAN_DEL, &info);
1347	if (err && err != -EOPNOTSUPP)
1348		return err;
1349
1350	vlan_vid_del(master, htons(ETH_P_8021Q), vlan->vid);
1351
1352	return err;
1353}
1354
1355int dsa_port_mrp_add(const struct dsa_port *dp,
1356		     const struct switchdev_obj_mrp *mrp)
1357{
1358	struct dsa_switch *ds = dp->ds;
1359
1360	if (!ds->ops->port_mrp_add)
1361		return -EOPNOTSUPP;
1362
1363	return ds->ops->port_mrp_add(ds, dp->index, mrp);
1364}
1365
1366int dsa_port_mrp_del(const struct dsa_port *dp,
1367		     const struct switchdev_obj_mrp *mrp)
1368{
1369	struct dsa_switch *ds = dp->ds;
1370
1371	if (!ds->ops->port_mrp_del)
1372		return -EOPNOTSUPP;
1373
1374	return ds->ops->port_mrp_del(ds, dp->index, mrp);
1375}
1376
1377int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
1378			       const struct switchdev_obj_ring_role_mrp *mrp)
1379{
1380	struct dsa_switch *ds = dp->ds;
1381
1382	if (!ds->ops->port_mrp_add_ring_role)
1383		return -EOPNOTSUPP;
1384
1385	return ds->ops->port_mrp_add_ring_role(ds, dp->index, mrp);
1386}
1387
1388int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
1389			       const struct switchdev_obj_ring_role_mrp *mrp)
1390{
1391	struct dsa_switch *ds = dp->ds;
1392
1393	if (!ds->ops->port_mrp_del_ring_role)
1394		return -EOPNOTSUPP;
1395
1396	return ds->ops->port_mrp_del_ring_role(ds, dp->index, mrp);
1397}
1398
1399static int dsa_port_assign_master(struct dsa_port *dp,
1400				  struct net_device *master,
1401				  struct netlink_ext_ack *extack,
1402				  bool fail_on_err)
1403{
1404	struct dsa_switch *ds = dp->ds;
1405	int port = dp->index, err;
1406
1407	err = ds->ops->port_change_master(ds, port, master, extack);
1408	if (err && !fail_on_err)
1409		dev_err(ds->dev, "port %d failed to assign master %s: %pe\n",
1410			port, master->name, ERR_PTR(err));
1411
1412	if (err && fail_on_err)
1413		return err;
1414
1415	dp->cpu_dp = master->dsa_ptr;
1416	dp->cpu_port_in_lag = netif_is_lag_master(master);
1417
1418	return 0;
1419}
1420
1421/* Change the dp->cpu_dp affinity for a user port. Note that both cross-chip
1422 * notifiers and drivers have implicit assumptions about user-to-CPU-port
1423 * mappings, so we unfortunately cannot delay the deletion of the objects
1424 * (switchdev, standalone addresses, standalone VLANs) on the old CPU port
1425 * until the new CPU port has been set up. So we need to completely tear down
1426 * the old CPU port before changing it, and restore it on errors during the
1427 * bringup of the new one.
1428 */
1429int dsa_port_change_master(struct dsa_port *dp, struct net_device *master,
1430			   struct netlink_ext_ack *extack)
1431{
1432	struct net_device *bridge_dev = dsa_port_bridge_dev_get(dp);
1433	struct net_device *old_master = dsa_port_to_master(dp);
1434	struct net_device *dev = dp->slave;
1435	struct dsa_switch *ds = dp->ds;
1436	bool vlan_filtering;
1437	int err, tmp;
1438
1439	/* Bridges may hold host FDB, MDB and VLAN objects. These need to be
1440	 * migrated, so dynamically unoffload and later reoffload the bridge
1441	 * port.
1442	 */
1443	if (bridge_dev) {
1444		dsa_port_pre_bridge_leave(dp, bridge_dev);
1445		dsa_port_bridge_leave(dp, bridge_dev);
1446	}
1447
1448	/* The port might still be VLAN filtering even if it's no longer
1449	 * under a bridge, either due to ds->vlan_filtering_is_global or
1450	 * ds->needs_standalone_vlan_filtering. In turn this means VLANs
1451	 * on the CPU port.
1452	 */
1453	vlan_filtering = dsa_port_is_vlan_filtering(dp);
1454	if (vlan_filtering) {
1455		err = dsa_slave_manage_vlan_filtering(dev, false);
1456		if (err) {
1457			NL_SET_ERR_MSG_MOD(extack,
1458					   "Failed to remove standalone VLANs");
1459			goto rewind_old_bridge;
1460		}
1461	}
1462
1463	/* Standalone addresses, and addresses of upper interfaces like
1464	 * VLAN, LAG, HSR need to be migrated.
1465	 */
1466	dsa_slave_unsync_ha(dev);
1467
1468	err = dsa_port_assign_master(dp, master, extack, true);
1469	if (err)
1470		goto rewind_old_addrs;
1471
1472	dsa_slave_sync_ha(dev);
1473
1474	if (vlan_filtering) {
1475		err = dsa_slave_manage_vlan_filtering(dev, true);
1476		if (err) {
1477			NL_SET_ERR_MSG_MOD(extack,
1478					   "Failed to restore standalone VLANs");
1479			goto rewind_new_addrs;
1480		}
1481	}
1482
1483	if (bridge_dev) {
1484		err = dsa_port_bridge_join(dp, bridge_dev, extack);
1485		if (err && err == -EOPNOTSUPP) {
1486			NL_SET_ERR_MSG_MOD(extack,
1487					   "Failed to reoffload bridge");
1488			goto rewind_new_vlan;
1489		}
1490	}
1491
1492	return 0;
1493
1494rewind_new_vlan:
1495	if (vlan_filtering)
1496		dsa_slave_manage_vlan_filtering(dev, false);
1497
1498rewind_new_addrs:
1499	dsa_slave_unsync_ha(dev);
1500
1501	dsa_port_assign_master(dp, old_master, NULL, false);
1502
1503/* Restore the objects on the old CPU port */
1504rewind_old_addrs:
1505	dsa_slave_sync_ha(dev);
1506
1507	if (vlan_filtering) {
1508		tmp = dsa_slave_manage_vlan_filtering(dev, true);
1509		if (tmp) {
1510			dev_err(ds->dev,
1511				"port %d failed to restore standalone VLANs: %pe\n",
1512				dp->index, ERR_PTR(tmp));
1513		}
1514	}
1515
1516rewind_old_bridge:
1517	if (bridge_dev) {
1518		tmp = dsa_port_bridge_join(dp, bridge_dev, extack);
1519		if (tmp) {
1520			dev_err(ds->dev,
1521				"port %d failed to rejoin bridge %s: %pe\n",
1522				dp->index, bridge_dev->name, ERR_PTR(tmp));
1523		}
1524	}
1525
1526	return err;
1527}
1528
1529void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
1530			       const struct dsa_device_ops *tag_ops)
1531{
1532	cpu_dp->rcv = tag_ops->rcv;
1533	cpu_dp->tag_ops = tag_ops;
1534}
 
1535
1536static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
1537{
1538	struct device_node *phy_dn;
1539	struct phy_device *phydev;
1540
1541	phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
1542	if (!phy_dn)
1543		return NULL;
1544
1545	phydev = of_phy_find_device(phy_dn);
1546	if (!phydev) {
1547		of_node_put(phy_dn);
1548		return ERR_PTR(-EPROBE_DEFER);
1549	}
1550
1551	of_node_put(phy_dn);
1552	return phydev;
1553}
1554
1555static void dsa_port_phylink_validate(struct phylink_config *config,
1556				      unsigned long *supported,
1557				      struct phylink_link_state *state)
1558{
1559	/* Skip call for drivers which don't yet set mac_capabilities,
1560	 * since validating in that case would mean their PHY will advertise
1561	 * nothing. In turn, skipping validation makes them advertise
1562	 * everything that the PHY supports, so those drivers should be
1563	 * converted ASAP.
1564	 */
1565	if (config->mac_capabilities)
1566		phylink_generic_validate(config, supported, state);
1567}
1568
1569static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config,
1570					       struct phylink_link_state *state)
1571{
1572	struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1573	struct dsa_switch *ds = dp->ds;
1574	int err;
1575
1576	/* Only called for inband modes */
1577	if (!ds->ops->phylink_mac_link_state) {
1578		state->link = 0;
1579		return;
1580	}
1581
1582	err = ds->ops->phylink_mac_link_state(ds, dp->index, state);
1583	if (err < 0) {
1584		dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n",
1585			dp->index, err);
1586		state->link = 0;
1587	}
1588}
 
1589
1590static struct phylink_pcs *
1591dsa_port_phylink_mac_select_pcs(struct phylink_config *config,
1592				phy_interface_t interface)
1593{
1594	struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1595	struct phylink_pcs *pcs = ERR_PTR(-EOPNOTSUPP);
1596	struct dsa_switch *ds = dp->ds;
1597
1598	if (ds->ops->phylink_mac_select_pcs)
1599		pcs = ds->ops->phylink_mac_select_pcs(ds, dp->index, interface);
 
1600
1601	return pcs;
1602}
 
1603
1604static void dsa_port_phylink_mac_config(struct phylink_config *config,
1605					unsigned int mode,
1606					const struct phylink_link_state *state)
1607{
1608	struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1609	struct dsa_switch *ds = dp->ds;
1610
1611	if (!ds->ops->phylink_mac_config)
1612		return;
1613
1614	ds->ops->phylink_mac_config(ds, dp->index, mode, state);
1615}
 
1616
1617static void dsa_port_phylink_mac_an_restart(struct phylink_config *config)
1618{
1619	struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1620	struct dsa_switch *ds = dp->ds;
1621
1622	if (!ds->ops->phylink_mac_an_restart)
1623		return;
1624
1625	ds->ops->phylink_mac_an_restart(ds, dp->index);
1626}
 
1627
1628static void dsa_port_phylink_mac_link_down(struct phylink_config *config,
1629					   unsigned int mode,
1630					   phy_interface_t interface)
1631{
1632	struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1633	struct phy_device *phydev = NULL;
1634	struct dsa_switch *ds = dp->ds;
1635
1636	if (dsa_port_is_user(dp))
1637		phydev = dp->slave->phydev;
1638
1639	if (!ds->ops->phylink_mac_link_down) {
1640		if (ds->ops->adjust_link && phydev)
1641			ds->ops->adjust_link(ds, dp->index, phydev);
1642		return;
1643	}
1644
1645	ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface);
1646}
 
1647
1648static void dsa_port_phylink_mac_link_up(struct phylink_config *config,
1649					 struct phy_device *phydev,
1650					 unsigned int mode,
1651					 phy_interface_t interface,
1652					 int speed, int duplex,
1653					 bool tx_pause, bool rx_pause)
1654{
1655	struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1656	struct dsa_switch *ds = dp->ds;
1657
1658	if (!ds->ops->phylink_mac_link_up) {
1659		if (ds->ops->adjust_link && phydev)
1660			ds->ops->adjust_link(ds, dp->index, phydev);
1661		return;
1662	}
1663
1664	ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev,
1665				     speed, duplex, tx_pause, rx_pause);
1666}
 
1667
1668static const struct phylink_mac_ops dsa_port_phylink_mac_ops = {
1669	.validate = dsa_port_phylink_validate,
1670	.mac_select_pcs = dsa_port_phylink_mac_select_pcs,
1671	.mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state,
1672	.mac_config = dsa_port_phylink_mac_config,
1673	.mac_an_restart = dsa_port_phylink_mac_an_restart,
1674	.mac_link_down = dsa_port_phylink_mac_link_down,
1675	.mac_link_up = dsa_port_phylink_mac_link_up,
1676};
1677
1678int dsa_port_phylink_create(struct dsa_port *dp)
1679{
1680	struct dsa_switch *ds = dp->ds;
1681	phy_interface_t mode;
1682	struct phylink *pl;
1683	int err;
1684
1685	err = of_get_phy_mode(dp->dn, &mode);
1686	if (err)
1687		mode = PHY_INTERFACE_MODE_NA;
1688
1689	/* Presence of phylink_mac_link_state or phylink_mac_an_restart is
1690	 * an indicator of a legacy phylink driver.
1691	 */
1692	if (ds->ops->phylink_mac_link_state ||
1693	    ds->ops->phylink_mac_an_restart)
1694		dp->pl_config.legacy_pre_march2020 = true;
1695
1696	if (ds->ops->phylink_get_caps)
1697		ds->ops->phylink_get_caps(ds, dp->index, &dp->pl_config);
1698
1699	pl = phylink_create(&dp->pl_config, of_fwnode_handle(dp->dn),
1700			    mode, &dsa_port_phylink_mac_ops);
1701	if (IS_ERR(pl)) {
1702		pr_err("error creating PHYLINK: %ld\n", PTR_ERR(pl));
1703		return PTR_ERR(pl);
1704	}
1705
1706	dp->pl = pl;
1707
1708	return 0;
1709}
1710
1711void dsa_port_phylink_destroy(struct dsa_port *dp)
1712{
1713	phylink_destroy(dp->pl);
1714	dp->pl = NULL;
1715}
1716
1717static int dsa_shared_port_setup_phy_of(struct dsa_port *dp, bool enable)
1718{
1719	struct dsa_switch *ds = dp->ds;
1720	struct phy_device *phydev;
1721	int port = dp->index;
1722	int err = 0;
1723
1724	phydev = dsa_port_get_phy_device(dp);
1725	if (!phydev)
1726		return 0;
1727
1728	if (IS_ERR(phydev))
1729		return PTR_ERR(phydev);
1730
1731	if (enable) {
1732		err = genphy_resume(phydev);
1733		if (err < 0)
1734			goto err_put_dev;
1735
1736		err = genphy_read_status(phydev);
1737		if (err < 0)
1738			goto err_put_dev;
1739	} else {
1740		err = genphy_suspend(phydev);
1741		if (err < 0)
1742			goto err_put_dev;
1743	}
1744
1745	if (ds->ops->adjust_link)
1746		ds->ops->adjust_link(ds, port, phydev);
1747
1748	dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));
1749
1750err_put_dev:
1751	put_device(&phydev->mdio.dev);
1752	return err;
1753}
1754
1755static int dsa_shared_port_fixed_link_register_of(struct dsa_port *dp)
1756{
1757	struct device_node *dn = dp->dn;
1758	struct dsa_switch *ds = dp->ds;
1759	struct phy_device *phydev;
1760	int port = dp->index;
1761	phy_interface_t mode;
1762	int err;
1763
1764	err = of_phy_register_fixed_link(dn);
1765	if (err) {
1766		dev_err(ds->dev,
1767			"failed to register the fixed PHY of port %d\n",
1768			port);
1769		return err;
1770	}
1771
1772	phydev = of_phy_find_device(dn);
1773
1774	err = of_get_phy_mode(dn, &mode);
1775	if (err)
1776		mode = PHY_INTERFACE_MODE_NA;
1777	phydev->interface = mode;
1778
1779	genphy_read_status(phydev);
1780
1781	if (ds->ops->adjust_link)
1782		ds->ops->adjust_link(ds, port, phydev);
1783
1784	put_device(&phydev->mdio.dev);
1785
1786	return 0;
1787}
1788
1789static int dsa_shared_port_phylink_register(struct dsa_port *dp)
1790{
1791	struct dsa_switch *ds = dp->ds;
1792	struct device_node *port_dn = dp->dn;
1793	int err;
 
 
 
 
1794
1795	dp->pl_config.dev = ds->dev;
1796	dp->pl_config.type = PHYLINK_DEV;
1797
1798	err = dsa_port_phylink_create(dp);
1799	if (err)
1800		return err;
 
 
 
1801
1802	err = phylink_of_phy_connect(dp->pl, port_dn, 0);
1803	if (err && err != -ENODEV) {
1804		pr_err("could not attach to PHY: %d\n", err);
1805		goto err_phy_connect;
1806	}
1807
 
 
 
 
1808	return 0;
1809
1810err_phy_connect:
1811	dsa_port_phylink_destroy(dp);
1812	return err;
1813}
1814
1815/* During the initial DSA driver migration to OF, port nodes were sometimes
1816 * added to device trees with no indication of how they should operate from a
1817 * link management perspective (phy-handle, fixed-link, etc). Additionally, the
1818 * phy-mode may be absent. The interpretation of these port OF nodes depends on
1819 * their type.
1820 *
1821 * User ports with no phy-handle or fixed-link are expected to connect to an
1822 * internal PHY located on the ds->slave_mii_bus at an MDIO address equal to
1823 * the port number. This description is still actively supported.
1824 *
1825 * Shared (CPU and DSA) ports with no phy-handle or fixed-link are expected to
1826 * operate at the maximum speed that their phy-mode is capable of. If the
1827 * phy-mode is absent, they are expected to operate using the phy-mode
1828 * supported by the port that gives the highest link speed. It is unspecified
1829 * if the port should use flow control or not, half duplex or full duplex, or
1830 * if the phy-mode is a SERDES link, whether in-band autoneg is expected to be
1831 * enabled or not.
1832 *
1833 * In the latter case of shared ports, omitting the link management description
1834 * from the firmware node is deprecated and strongly discouraged. DSA uses
1835 * phylink, which rejects the firmware nodes of these ports for lacking
1836 * required properties.
1837 *
1838 * For switches in this table, DSA will skip enforcing validation and will
1839 * later omit registering a phylink instance for the shared ports, if they lack
1840 * a fixed-link, a phy-handle, or a managed = "in-band-status" property.
1841 * It becomes the responsibility of the driver to ensure that these ports
1842 * operate at the maximum speed (whatever this means) and will interoperate
1843 * with the DSA master or other cascade port, since phylink methods will not be
1844 * invoked for them.
1845 *
1846 * If you are considering expanding this table for newly introduced switches,
1847 * think again. It is OK to remove switches from this table if there aren't DT
1848 * blobs in circulation which rely on defaulting the shared ports.
1849 */
1850static const char * const dsa_switches_apply_workarounds[] = {
1851#if IS_ENABLED(CONFIG_NET_DSA_XRS700X)
1852	"arrow,xrs7003e",
1853	"arrow,xrs7003f",
1854	"arrow,xrs7004e",
1855	"arrow,xrs7004f",
1856#endif
1857#if IS_ENABLED(CONFIG_B53)
1858	"brcm,bcm5325",
1859	"brcm,bcm53115",
1860	"brcm,bcm53125",
1861	"brcm,bcm53128",
1862	"brcm,bcm5365",
1863	"brcm,bcm5389",
1864	"brcm,bcm5395",
1865	"brcm,bcm5397",
1866	"brcm,bcm5398",
1867	"brcm,bcm53010-srab",
1868	"brcm,bcm53011-srab",
1869	"brcm,bcm53012-srab",
1870	"brcm,bcm53018-srab",
1871	"brcm,bcm53019-srab",
1872	"brcm,bcm5301x-srab",
1873	"brcm,bcm11360-srab",
1874	"brcm,bcm58522-srab",
1875	"brcm,bcm58525-srab",
1876	"brcm,bcm58535-srab",
1877	"brcm,bcm58622-srab",
1878	"brcm,bcm58623-srab",
1879	"brcm,bcm58625-srab",
1880	"brcm,bcm88312-srab",
1881	"brcm,cygnus-srab",
1882	"brcm,nsp-srab",
1883	"brcm,omega-srab",
1884	"brcm,bcm3384-switch",
1885	"brcm,bcm6328-switch",
1886	"brcm,bcm6368-switch",
1887	"brcm,bcm63xx-switch",
1888#endif
1889#if IS_ENABLED(CONFIG_NET_DSA_BCM_SF2)
1890	"brcm,bcm7445-switch-v4.0",
1891	"brcm,bcm7278-switch-v4.0",
1892	"brcm,bcm7278-switch-v4.8",
1893#endif
1894#if IS_ENABLED(CONFIG_NET_DSA_LANTIQ_GSWIP)
1895	"lantiq,xrx200-gswip",
1896	"lantiq,xrx300-gswip",
1897	"lantiq,xrx330-gswip",
1898#endif
1899#if IS_ENABLED(CONFIG_NET_DSA_MV88E6060)
1900	"marvell,mv88e6060",
1901#endif
1902#if IS_ENABLED(CONFIG_NET_DSA_MV88E6XXX)
1903	"marvell,mv88e6085",
1904	"marvell,mv88e6190",
1905	"marvell,mv88e6250",
1906#endif
1907#if IS_ENABLED(CONFIG_NET_DSA_MICROCHIP_KSZ_COMMON)
1908	"microchip,ksz8765",
1909	"microchip,ksz8794",
1910	"microchip,ksz8795",
1911	"microchip,ksz8863",
1912	"microchip,ksz8873",
1913	"microchip,ksz9477",
1914	"microchip,ksz9897",
1915	"microchip,ksz9893",
1916	"microchip,ksz9563",
1917	"microchip,ksz8563",
1918	"microchip,ksz9567",
1919#endif
1920#if IS_ENABLED(CONFIG_NET_DSA_SMSC_LAN9303_MDIO)
1921	"smsc,lan9303-mdio",
1922#endif
1923#if IS_ENABLED(CONFIG_NET_DSA_SMSC_LAN9303_I2C)
1924	"smsc,lan9303-i2c",
1925#endif
1926	NULL,
1927};
1928
1929static void dsa_shared_port_validate_of(struct dsa_port *dp,
1930					bool *missing_phy_mode,
1931					bool *missing_link_description)
1932{
1933	struct device_node *dn = dp->dn, *phy_np;
1934	struct dsa_switch *ds = dp->ds;
1935	phy_interface_t mode;
1936
1937	*missing_phy_mode = false;
1938	*missing_link_description = false;
1939
1940	if (of_get_phy_mode(dn, &mode)) {
1941		*missing_phy_mode = true;
1942		dev_err(ds->dev,
1943			"OF node %pOF of %s port %d lacks the required \"phy-mode\" property\n",
1944			dn, dsa_port_is_cpu(dp) ? "CPU" : "DSA", dp->index);
1945	}
1946
1947	/* Note: of_phy_is_fixed_link() also returns true for
1948	 * managed = "in-band-status"
1949	 */
1950	if (of_phy_is_fixed_link(dn))
1951		return;
1952
1953	phy_np = of_parse_phandle(dn, "phy-handle", 0);
1954	if (phy_np) {
1955		of_node_put(phy_np);
1956		return;
1957	}
1958
1959	*missing_link_description = true;
1960
1961	dev_err(ds->dev,
1962		"OF node %pOF of %s port %d lacks the required \"phy-handle\", \"fixed-link\" or \"managed\" properties\n",
1963		dn, dsa_port_is_cpu(dp) ? "CPU" : "DSA", dp->index);
1964}
1965
1966int dsa_shared_port_link_register_of(struct dsa_port *dp)
1967{
1968	struct dsa_switch *ds = dp->ds;
1969	bool missing_link_description;
1970	bool missing_phy_mode;
1971	int port = dp->index;
1972
1973	dsa_shared_port_validate_of(dp, &missing_phy_mode,
1974				    &missing_link_description);
1975
1976	if ((missing_phy_mode || missing_link_description) &&
1977	    !of_device_compatible_match(ds->dev->of_node,
1978					dsa_switches_apply_workarounds))
1979		return -EINVAL;
1980
1981	if (!ds->ops->adjust_link) {
1982		if (missing_link_description) {
1983			dev_warn(ds->dev,
1984				 "Skipping phylink registration for %s port %d\n",
1985				 dsa_port_is_cpu(dp) ? "CPU" : "DSA", dp->index);
1986		} else {
1987			if (ds->ops->phylink_mac_link_down)
1988				ds->ops->phylink_mac_link_down(ds, port,
1989					MLO_AN_FIXED, PHY_INTERFACE_MODE_NA);
1990
1991			return dsa_shared_port_phylink_register(dp);
1992		}
1993		return 0;
1994	}
1995
1996	dev_warn(ds->dev,
1997		 "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
1998
1999	if (of_phy_is_fixed_link(dp->dn))
2000		return dsa_shared_port_fixed_link_register_of(dp);
2001	else
2002		return dsa_shared_port_setup_phy_of(dp, true);
2003}
2004
2005void dsa_shared_port_link_unregister_of(struct dsa_port *dp)
2006{
2007	struct dsa_switch *ds = dp->ds;
2008
2009	if (!ds->ops->adjust_link && dp->pl) {
2010		rtnl_lock();
2011		phylink_disconnect_phy(dp->pl);
2012		rtnl_unlock();
2013		dsa_port_phylink_destroy(dp);
2014		return;
2015	}
2016
2017	if (of_phy_is_fixed_link(dp->dn))
2018		of_phy_deregister_fixed_link(dp->dn);
2019	else
2020		dsa_shared_port_setup_phy_of(dp, false);
2021}
2022
2023int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
2024{
2025	struct dsa_switch *ds = dp->ds;
2026	int err;
2027
2028	if (!ds->ops->port_hsr_join)
2029		return -EOPNOTSUPP;
2030
2031	dp->hsr_dev = hsr;
 
 
2032
2033	err = ds->ops->port_hsr_join(ds, dp->index, hsr);
2034	if (err)
2035		dp->hsr_dev = NULL;
2036
2037	return err;
2038}
 
2039
2040void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr)
2041{
2042	struct dsa_switch *ds = dp->ds;
2043	int err;
2044
2045	dp->hsr_dev = NULL;
 
2046
2047	if (ds->ops->port_hsr_leave) {
2048		err = ds->ops->port_hsr_leave(ds, dp->index, hsr);
2049		if (err)
2050			dev_err(dp->ds->dev,
2051				"port %d failed to leave HSR %s: %pe\n",
2052				dp->index, hsr->name, ERR_PTR(err));
2053	}
 
2054}
 
2055
2056int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid, bool broadcast)
2057{
2058	struct dsa_notifier_tag_8021q_vlan_info info = {
2059		.dp = dp,
2060		.vid = vid,
2061	};
2062
2063	if (broadcast)
2064		return dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info);
2065
2066	return dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info);
2067}
 
2068
2069void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid, bool broadcast)
2070{
2071	struct dsa_notifier_tag_8021q_vlan_info info = {
2072		.dp = dp,
2073		.vid = vid,
2074	};
2075	int err;
2076
2077	if (broadcast)
2078		err = dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info);
2079	else
2080		err = dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info);
2081	if (err)
2082		dev_err(dp->ds->dev,
2083			"port %d failed to notify tag_8021q VLAN %d deletion: %pe\n",
2084			dp->index, vid, ERR_PTR(err));
2085}