1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Handling of a single switch port
5 * Copyright (c) 2017 Savoir-faire Linux Inc.
6 * Vivien Didelot <vivien.didelot@savoirfairelinux.com>
9 #include <linux/if_bridge.h>
10 #include <linux/notifier.h>
11 #include <linux/of_mdio.h>
12 #include <linux/of_net.h>
17 * dsa_port_notify - Notify the switching fabric of changes to a port
18 * @dp: port on which change occurred
19 * @e: event, must be of type DSA_NOTIFIER_*
20 * @v: event-specific value.
22 * Notify all switches in the DSA tree that this port's switch belongs to,
23 * including this switch itself, of an event. Allows the other switches to
24 * reconfigure themselves for cross-chip operations. Can also be used to
25 * reconfigure ports without net_devices (CPU ports, DSA links) whenever
26 * a user port's state changes.
28 static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v)
30 return dsa_tree_notify(dp->ds->dst, e, v);
33 int dsa_port_set_state(struct dsa_port *dp, u8 state)
35 struct dsa_switch *ds = dp->ds;
38 if (!ds->ops->port_stp_state_set)
41 ds->ops->port_stp_state_set(ds, port, state);
43 if (ds->ops->port_fast_age) {
44 /* Fast age FDB entries or flush appropriate forwarding database
45 * for the given port, if we are moving it from Learning or
46 * Forwarding state, to Disabled or Blocking or Listening state.
49 if ((dp->stp_state == BR_STATE_LEARNING ||
50 dp->stp_state == BR_STATE_FORWARDING) &&
51 (state == BR_STATE_DISABLED ||
52 state == BR_STATE_BLOCKING ||
53 state == BR_STATE_LISTENING))
54 ds->ops->port_fast_age(ds, port);
57 dp->stp_state = state;
62 static void dsa_port_set_state_now(struct dsa_port *dp, u8 state)
66 err = dsa_port_set_state(dp, state);
68 pr_err("DSA: failed to set STP state %u (%d)\n", state, err);
71 int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy)
73 struct dsa_switch *ds = dp->ds;
77 if (ds->ops->port_enable) {
78 err = ds->ops->port_enable(ds, port, phy);
84 dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
87 phylink_start(dp->pl);
92 int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy)
97 err = dsa_port_enable_rt(dp, phy);
103 void dsa_port_disable_rt(struct dsa_port *dp)
105 struct dsa_switch *ds = dp->ds;
106 int port = dp->index;
109 phylink_stop(dp->pl);
112 dsa_port_set_state_now(dp, BR_STATE_DISABLED);
114 if (ds->ops->port_disable)
115 ds->ops->port_disable(ds, port);
118 void dsa_port_disable(struct dsa_port *dp)
121 dsa_port_disable_rt(dp);
125 static int dsa_port_inherit_brport_flags(struct dsa_port *dp,
126 struct netlink_ext_ack *extack)
128 const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
130 struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
133 for_each_set_bit(flag, &mask, 32) {
134 struct switchdev_brport_flags flags = {0};
136 flags.mask = BIT(flag);
138 if (br_port_flag_is_set(brport_dev, BIT(flag)))
139 flags.val = BIT(flag);
141 err = dsa_port_bridge_flags(dp, flags, extack);
142 if (err && err != -EOPNOTSUPP)
149 static void dsa_port_clear_brport_flags(struct dsa_port *dp)
151 const unsigned long val = BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
152 const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
156 for_each_set_bit(flag, &mask, 32) {
157 struct switchdev_brport_flags flags = {0};
159 flags.mask = BIT(flag);
160 flags.val = val & BIT(flag);
162 err = dsa_port_bridge_flags(dp, flags, NULL);
163 if (err && err != -EOPNOTSUPP)
165 "failed to clear bridge port flag %lu: %pe\n",
166 flags.val, ERR_PTR(err));
170 static int dsa_port_switchdev_sync(struct dsa_port *dp,
171 struct netlink_ext_ack *extack)
173 struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
174 struct net_device *br = dp->bridge_dev;
177 err = dsa_port_inherit_brport_flags(dp, extack);
181 err = dsa_port_set_state(dp, br_port_get_stp_state(brport_dev));
182 if (err && err != -EOPNOTSUPP)
185 err = dsa_port_vlan_filtering(dp, br_vlan_enabled(br), extack);
186 if (err && err != -EOPNOTSUPP)
189 err = dsa_port_mrouter(dp->cpu_dp, br_multicast_router(br), extack);
190 if (err && err != -EOPNOTSUPP)
193 err = dsa_port_ageing_time(dp, br_get_ageing_time(br));
194 if (err && err != -EOPNOTSUPP)
197 err = br_mdb_replay(br, brport_dev, dp, true,
198 &dsa_slave_switchdev_blocking_notifier, extack);
199 if (err && err != -EOPNOTSUPP)
202 err = br_fdb_replay(br, brport_dev, dp, true,
203 &dsa_slave_switchdev_notifier);
204 if (err && err != -EOPNOTSUPP)
207 err = br_vlan_replay(br, brport_dev, dp, true,
208 &dsa_slave_switchdev_blocking_notifier, extack);
209 if (err && err != -EOPNOTSUPP)
215 static void dsa_port_switchdev_unsync(struct dsa_port *dp)
217 /* Configure the port for standalone mode (no address learning,
219 * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events
220 * when the user requests it through netlink or sysfs, but not
221 * automatically at port join or leave, so we need to handle resetting
222 * the brport flags ourselves. But we even prefer it that way, because
223 * otherwise, some setups might never get the notification they need,
224 * for example, when a port leaves a LAG that offloads the bridge,
225 * it becomes standalone, but as far as the bridge is concerned, no
228 dsa_port_clear_brport_flags(dp);
230 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
231 * so allow it to be in BR_STATE_FORWARDING to be kept functional
233 dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
235 /* VLAN filtering is handled by dsa_switch_bridge_leave */
237 /* Some drivers treat the notification for having a local multicast
238 * router by allowing multicast to be flooded to the CPU, so we should
239 * allow this in standalone mode too.
241 dsa_port_mrouter(dp->cpu_dp, true, NULL);
243 /* Ageing time may be global to the switch chip, so don't change it
244 * here because we have no good reason (or value) to change it to.
248 int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
249 struct netlink_ext_ack *extack)
251 struct dsa_notifier_bridge_info info = {
252 .tree_index = dp->ds->dst->index,
253 .sw_index = dp->ds->index,
259 /* Here the interface is already bridged. Reflect the current
260 * configuration so that drivers can program their chips accordingly.
264 err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info);
268 err = dsa_port_switchdev_sync(dp, extack);
270 goto out_rollback_unbridge;
274 out_rollback_unbridge:
275 dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
277 dp->bridge_dev = NULL;
281 void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
283 struct dsa_notifier_bridge_info info = {
284 .tree_index = dp->ds->dst->index,
285 .sw_index = dp->ds->index,
291 /* Here the port is already unbridged. Reflect the current configuration
292 * so that drivers can program their chips accordingly.
294 dp->bridge_dev = NULL;
296 err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
298 pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n");
300 dsa_port_switchdev_unsync(dp);
303 int dsa_port_lag_change(struct dsa_port *dp,
304 struct netdev_lag_lower_state_info *linfo)
306 struct dsa_notifier_lag_info info = {
307 .sw_index = dp->ds->index,
315 /* On statically configured aggregates (e.g. loadbalance
316 * without LACP) ports will always be tx_enabled, even if the
317 * link is down. Thus we require both link_up and tx_enabled
318 * in order to include it in the tx set.
320 tx_enabled = linfo->link_up && linfo->tx_enabled;
322 if (tx_enabled == dp->lag_tx_enabled)
325 dp->lag_tx_enabled = tx_enabled;
327 return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info);
330 int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag,
331 struct netdev_lag_upper_info *uinfo,
332 struct netlink_ext_ack *extack)
334 struct dsa_notifier_lag_info info = {
335 .sw_index = dp->ds->index,
340 struct net_device *bridge_dev;
343 dsa_lag_map(dp->ds->dst, lag);
346 err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info);
350 bridge_dev = netdev_master_upper_dev_get(lag);
351 if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
354 err = dsa_port_bridge_join(dp, bridge_dev, extack);
356 goto err_bridge_join;
361 dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
364 dsa_lag_unmap(dp->ds->dst, lag);
368 void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag)
370 struct dsa_notifier_lag_info info = {
371 .sw_index = dp->ds->index,
380 /* Port might have been part of a LAG that in turn was
381 * attached to a bridge.
384 dsa_port_bridge_leave(dp, dp->bridge_dev);
386 dp->lag_tx_enabled = false;
389 err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
391 pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n",
394 dsa_lag_unmap(dp->ds->dst, lag);
397 /* Must be called under rcu_read_lock() */
398 static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp,
400 struct netlink_ext_ack *extack)
402 struct dsa_switch *ds = dp->ds;
405 /* VLAN awareness was off, so the question is "can we turn it on".
406 * We may have had 8021q uppers, those need to go. Make sure we don't
407 * enter an inconsistent state: deny changing the VLAN awareness state
408 * as long as we have 8021q uppers.
410 if (vlan_filtering && dsa_is_user_port(ds, dp->index)) {
411 struct net_device *upper_dev, *slave = dp->slave;
412 struct net_device *br = dp->bridge_dev;
413 struct list_head *iter;
415 netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
416 struct bridge_vlan_info br_info;
419 if (!is_vlan_dev(upper_dev))
422 vid = vlan_dev_vlan_id(upper_dev);
424 /* br_vlan_get_info() returns -EINVAL or -ENOENT if the
425 * device, respectively the VID is not found, returning
426 * 0 means success, which is a failure for us here.
428 err = br_vlan_get_info(br, vid, &br_info);
430 NL_SET_ERR_MSG_MOD(extack,
431 "Must first remove VLAN uppers having VIDs also present in bridge");
437 if (!ds->vlan_filtering_is_global)
440 /* For cases where enabling/disabling VLAN awareness is global to the
441 * switch, we need to handle the case where multiple bridges span
442 * different ports of the same switch device and one of them has a
443 * different setting than what is being requested.
445 for (i = 0; i < ds->num_ports; i++) {
446 struct net_device *other_bridge;
448 other_bridge = dsa_to_port(ds, i)->bridge_dev;
451 /* If it's the same bridge, it also has same
452 * vlan_filtering setting => no need to check
454 if (other_bridge == dp->bridge_dev)
456 if (br_vlan_enabled(other_bridge) != vlan_filtering) {
457 NL_SET_ERR_MSG_MOD(extack,
458 "VLAN filtering is a global setting");
465 int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
466 struct netlink_ext_ack *extack)
468 struct dsa_switch *ds = dp->ds;
472 if (!ds->ops->port_vlan_filtering)
475 /* We are called from dsa_slave_switchdev_blocking_event(),
476 * which is not under rcu_read_lock(), unlike
477 * dsa_slave_switchdev_event().
480 apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack);
485 if (dsa_port_is_vlan_filtering(dp) == vlan_filtering)
488 err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering,
493 if (ds->vlan_filtering_is_global)
494 ds->vlan_filtering = vlan_filtering;
496 dp->vlan_filtering = vlan_filtering;
501 /* This enforces legacy behavior for switch drivers which assume they can't
502 * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0
504 bool dsa_port_skip_vlan_configuration(struct dsa_port *dp)
506 struct dsa_switch *ds = dp->ds;
511 return (!ds->configure_vlan_while_not_filtering &&
512 !br_vlan_enabled(dp->bridge_dev));
515 int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock)
517 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
518 unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
519 struct dsa_notifier_ageing_time_info info;
522 info.ageing_time = ageing_time;
524 err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
528 dp->ageing_time = ageing_time;
533 int dsa_port_pre_bridge_flags(const struct dsa_port *dp,
534 struct switchdev_brport_flags flags,
535 struct netlink_ext_ack *extack)
537 struct dsa_switch *ds = dp->ds;
539 if (!ds->ops->port_pre_bridge_flags)
542 return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack);
545 int dsa_port_bridge_flags(const struct dsa_port *dp,
546 struct switchdev_brport_flags flags,
547 struct netlink_ext_ack *extack)
549 struct dsa_switch *ds = dp->ds;
551 if (!ds->ops->port_bridge_flags)
554 return ds->ops->port_bridge_flags(ds, dp->index, flags, extack);
557 int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
558 struct netlink_ext_ack *extack)
560 struct dsa_switch *ds = dp->ds;
562 if (!ds->ops->port_set_mrouter)
565 return ds->ops->port_set_mrouter(ds, dp->index, mrouter, extack);
568 int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
571 struct dsa_notifier_mtu_info info = {
572 .sw_index = dp->ds->index,
573 .targeted_match = targeted_match,
578 return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info);
581 int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
584 struct dsa_notifier_fdb_info info = {
585 .sw_index = dp->ds->index,
591 return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
594 int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
597 struct dsa_notifier_fdb_info info = {
598 .sw_index = dp->ds->index,
605 return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
608 int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data)
610 struct dsa_switch *ds = dp->ds;
611 int port = dp->index;
613 if (!ds->ops->port_fdb_dump)
616 return ds->ops->port_fdb_dump(ds, port, cb, data);
619 int dsa_port_mdb_add(const struct dsa_port *dp,
620 const struct switchdev_obj_port_mdb *mdb)
622 struct dsa_notifier_mdb_info info = {
623 .sw_index = dp->ds->index,
628 return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
631 int dsa_port_mdb_del(const struct dsa_port *dp,
632 const struct switchdev_obj_port_mdb *mdb)
634 struct dsa_notifier_mdb_info info = {
635 .sw_index = dp->ds->index,
640 return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
643 int dsa_port_vlan_add(struct dsa_port *dp,
644 const struct switchdev_obj_port_vlan *vlan,
645 struct netlink_ext_ack *extack)
647 struct dsa_notifier_vlan_info info = {
648 .sw_index = dp->ds->index,
654 return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
657 int dsa_port_vlan_del(struct dsa_port *dp,
658 const struct switchdev_obj_port_vlan *vlan)
660 struct dsa_notifier_vlan_info info = {
661 .sw_index = dp->ds->index,
666 return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
669 int dsa_port_mrp_add(const struct dsa_port *dp,
670 const struct switchdev_obj_mrp *mrp)
672 struct dsa_notifier_mrp_info info = {
673 .sw_index = dp->ds->index,
678 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info);
681 int dsa_port_mrp_del(const struct dsa_port *dp,
682 const struct switchdev_obj_mrp *mrp)
684 struct dsa_notifier_mrp_info info = {
685 .sw_index = dp->ds->index,
690 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info);
693 int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
694 const struct switchdev_obj_ring_role_mrp *mrp)
696 struct dsa_notifier_mrp_ring_role_info info = {
697 .sw_index = dp->ds->index,
702 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info);
705 int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
706 const struct switchdev_obj_ring_role_mrp *mrp)
708 struct dsa_notifier_mrp_ring_role_info info = {
709 .sw_index = dp->ds->index,
714 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info);
717 void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
718 const struct dsa_device_ops *tag_ops)
720 cpu_dp->filter = tag_ops->filter;
721 cpu_dp->rcv = tag_ops->rcv;
722 cpu_dp->tag_ops = tag_ops;
725 static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
727 struct device_node *phy_dn;
728 struct phy_device *phydev;
730 phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
734 phydev = of_phy_find_device(phy_dn);
737 return ERR_PTR(-EPROBE_DEFER);
744 static void dsa_port_phylink_validate(struct phylink_config *config,
745 unsigned long *supported,
746 struct phylink_link_state *state)
748 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
749 struct dsa_switch *ds = dp->ds;
751 if (!ds->ops->phylink_validate)
754 ds->ops->phylink_validate(ds, dp->index, supported, state);
757 static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config,
758 struct phylink_link_state *state)
760 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
761 struct dsa_switch *ds = dp->ds;
764 /* Only called for inband modes */
765 if (!ds->ops->phylink_mac_link_state) {
770 err = ds->ops->phylink_mac_link_state(ds, dp->index, state);
772 dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n",
778 static void dsa_port_phylink_mac_config(struct phylink_config *config,
780 const struct phylink_link_state *state)
782 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
783 struct dsa_switch *ds = dp->ds;
785 if (!ds->ops->phylink_mac_config)
788 ds->ops->phylink_mac_config(ds, dp->index, mode, state);
791 static void dsa_port_phylink_mac_an_restart(struct phylink_config *config)
793 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
794 struct dsa_switch *ds = dp->ds;
796 if (!ds->ops->phylink_mac_an_restart)
799 ds->ops->phylink_mac_an_restart(ds, dp->index);
802 static void dsa_port_phylink_mac_link_down(struct phylink_config *config,
804 phy_interface_t interface)
806 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
807 struct phy_device *phydev = NULL;
808 struct dsa_switch *ds = dp->ds;
810 if (dsa_is_user_port(ds, dp->index))
811 phydev = dp->slave->phydev;
813 if (!ds->ops->phylink_mac_link_down) {
814 if (ds->ops->adjust_link && phydev)
815 ds->ops->adjust_link(ds, dp->index, phydev);
819 ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface);
822 static void dsa_port_phylink_mac_link_up(struct phylink_config *config,
823 struct phy_device *phydev,
825 phy_interface_t interface,
826 int speed, int duplex,
827 bool tx_pause, bool rx_pause)
829 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
830 struct dsa_switch *ds = dp->ds;
832 if (!ds->ops->phylink_mac_link_up) {
833 if (ds->ops->adjust_link && phydev)
834 ds->ops->adjust_link(ds, dp->index, phydev);
838 ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev,
839 speed, duplex, tx_pause, rx_pause);
842 const struct phylink_mac_ops dsa_port_phylink_mac_ops = {
843 .validate = dsa_port_phylink_validate,
844 .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state,
845 .mac_config = dsa_port_phylink_mac_config,
846 .mac_an_restart = dsa_port_phylink_mac_an_restart,
847 .mac_link_down = dsa_port_phylink_mac_link_down,
848 .mac_link_up = dsa_port_phylink_mac_link_up,
851 static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable)
853 struct dsa_switch *ds = dp->ds;
854 struct phy_device *phydev;
855 int port = dp->index;
858 phydev = dsa_port_get_phy_device(dp);
863 return PTR_ERR(phydev);
866 err = genphy_resume(phydev);
870 err = genphy_read_status(phydev);
874 err = genphy_suspend(phydev);
879 if (ds->ops->adjust_link)
880 ds->ops->adjust_link(ds, port, phydev);
882 dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));
885 put_device(&phydev->mdio.dev);
889 static int dsa_port_fixed_link_register_of(struct dsa_port *dp)
891 struct device_node *dn = dp->dn;
892 struct dsa_switch *ds = dp->ds;
893 struct phy_device *phydev;
894 int port = dp->index;
895 phy_interface_t mode;
898 err = of_phy_register_fixed_link(dn);
901 "failed to register the fixed PHY of port %d\n",
906 phydev = of_phy_find_device(dn);
908 err = of_get_phy_mode(dn, &mode);
910 mode = PHY_INTERFACE_MODE_NA;
911 phydev->interface = mode;
913 genphy_read_status(phydev);
915 if (ds->ops->adjust_link)
916 ds->ops->adjust_link(ds, port, phydev);
918 put_device(&phydev->mdio.dev);
923 static int dsa_port_phylink_register(struct dsa_port *dp)
925 struct dsa_switch *ds = dp->ds;
926 struct device_node *port_dn = dp->dn;
927 phy_interface_t mode;
930 err = of_get_phy_mode(port_dn, &mode);
932 mode = PHY_INTERFACE_MODE_NA;
934 dp->pl_config.dev = ds->dev;
935 dp->pl_config.type = PHYLINK_DEV;
936 dp->pl_config.pcs_poll = ds->pcs_poll;
938 dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn),
939 mode, &dsa_port_phylink_mac_ops);
940 if (IS_ERR(dp->pl)) {
941 pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
942 return PTR_ERR(dp->pl);
945 err = phylink_of_phy_connect(dp->pl, port_dn, 0);
946 if (err && err != -ENODEV) {
947 pr_err("could not attach to PHY: %d\n", err);
948 goto err_phy_connect;
954 phylink_destroy(dp->pl);
958 int dsa_port_link_register_of(struct dsa_port *dp)
960 struct dsa_switch *ds = dp->ds;
961 struct device_node *phy_np;
962 int port = dp->index;
964 if (!ds->ops->adjust_link) {
965 phy_np = of_parse_phandle(dp->dn, "phy-handle", 0);
966 if (of_phy_is_fixed_link(dp->dn) || phy_np) {
967 if (ds->ops->phylink_mac_link_down)
968 ds->ops->phylink_mac_link_down(ds, port,
969 MLO_AN_FIXED, PHY_INTERFACE_MODE_NA);
970 return dsa_port_phylink_register(dp);
976 "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
978 if (of_phy_is_fixed_link(dp->dn))
979 return dsa_port_fixed_link_register_of(dp);
981 return dsa_port_setup_phy_of(dp, true);
984 void dsa_port_link_unregister_of(struct dsa_port *dp)
986 struct dsa_switch *ds = dp->ds;
988 if (!ds->ops->adjust_link && dp->pl) {
990 phylink_disconnect_phy(dp->pl);
992 phylink_destroy(dp->pl);
997 if (of_phy_is_fixed_link(dp->dn))
998 of_phy_deregister_fixed_link(dp->dn);
1000 dsa_port_setup_phy_of(dp, false);
1003 int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data)
1005 struct phy_device *phydev;
1006 int ret = -EOPNOTSUPP;
1008 if (of_phy_is_fixed_link(dp->dn))
1011 phydev = dsa_port_get_phy_device(dp);
1012 if (IS_ERR_OR_NULL(phydev))
1015 ret = phy_ethtool_get_strings(phydev, data);
1016 put_device(&phydev->mdio.dev);
1020 EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);
1022 int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data)
1024 struct phy_device *phydev;
1025 int ret = -EOPNOTSUPP;
1027 if (of_phy_is_fixed_link(dp->dn))
1030 phydev = dsa_port_get_phy_device(dp);
1031 if (IS_ERR_OR_NULL(phydev))
1034 ret = phy_ethtool_get_stats(phydev, NULL, data);
1035 put_device(&phydev->mdio.dev);
1039 EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);
1041 int dsa_port_get_phy_sset_count(struct dsa_port *dp)
1043 struct phy_device *phydev;
1044 int ret = -EOPNOTSUPP;
1046 if (of_phy_is_fixed_link(dp->dn))
1049 phydev = dsa_port_get_phy_device(dp);
1050 if (IS_ERR_OR_NULL(phydev))
1053 ret = phy_ethtool_get_sset_count(phydev);
1054 put_device(&phydev->mdio.dev);
1058 EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);
1060 int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
1062 struct dsa_notifier_hsr_info info = {
1063 .sw_index = dp->ds->index,
1071 err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info);
1078 void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr)
1080 struct dsa_notifier_hsr_info info = {
1081 .sw_index = dp->ds->index,
1089 err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info);
1091 pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n");