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 int dsa_port_switchdev_unsync_objs(struct dsa_port *dp,
216 struct net_device *br,
217 struct netlink_ext_ack *extack)
219 struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
222 /* Delete the switchdev objects left on this port */
223 err = br_mdb_replay(br, brport_dev, dp, false,
224 &dsa_slave_switchdev_blocking_notifier, extack);
225 if (err && err != -EOPNOTSUPP)
228 err = br_fdb_replay(br, brport_dev, dp, false,
229 &dsa_slave_switchdev_notifier);
230 if (err && err != -EOPNOTSUPP)
233 err = br_vlan_replay(br, brport_dev, dp, false,
234 &dsa_slave_switchdev_blocking_notifier, extack);
235 if (err && err != -EOPNOTSUPP)
241 static void dsa_port_switchdev_unsync_attrs(struct dsa_port *dp)
243 /* Configure the port for standalone mode (no address learning,
245 * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events
246 * when the user requests it through netlink or sysfs, but not
247 * automatically at port join or leave, so we need to handle resetting
248 * the brport flags ourselves. But we even prefer it that way, because
249 * otherwise, some setups might never get the notification they need,
250 * for example, when a port leaves a LAG that offloads the bridge,
251 * it becomes standalone, but as far as the bridge is concerned, no
254 dsa_port_clear_brport_flags(dp);
256 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
257 * so allow it to be in BR_STATE_FORWARDING to be kept functional
259 dsa_port_set_state_now(dp, BR_STATE_FORWARDING);
261 /* VLAN filtering is handled by dsa_switch_bridge_leave */
263 /* Some drivers treat the notification for having a local multicast
264 * router by allowing multicast to be flooded to the CPU, so we should
265 * allow this in standalone mode too.
267 dsa_port_mrouter(dp->cpu_dp, true, NULL);
269 /* Ageing time may be global to the switch chip, so don't change it
270 * here because we have no good reason (or value) to change it to.
274 int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
275 struct netlink_ext_ack *extack)
277 struct dsa_notifier_bridge_info info = {
278 .tree_index = dp->ds->dst->index,
279 .sw_index = dp->ds->index,
285 /* Here the interface is already bridged. Reflect the current
286 * configuration so that drivers can program their chips accordingly.
290 err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info);
294 err = dsa_port_switchdev_sync(dp, extack);
296 goto out_rollback_unbridge;
300 out_rollback_unbridge:
301 dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
303 dp->bridge_dev = NULL;
307 int dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br,
308 struct netlink_ext_ack *extack)
310 return dsa_port_switchdev_unsync_objs(dp, br, extack);
313 void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
315 struct dsa_notifier_bridge_info info = {
316 .tree_index = dp->ds->dst->index,
317 .sw_index = dp->ds->index,
323 /* Here the port is already unbridged. Reflect the current configuration
324 * so that drivers can program their chips accordingly.
326 dp->bridge_dev = NULL;
328 err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info);
330 pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n");
332 dsa_port_switchdev_unsync_attrs(dp);
335 int dsa_port_lag_change(struct dsa_port *dp,
336 struct netdev_lag_lower_state_info *linfo)
338 struct dsa_notifier_lag_info info = {
339 .sw_index = dp->ds->index,
347 /* On statically configured aggregates (e.g. loadbalance
348 * without LACP) ports will always be tx_enabled, even if the
349 * link is down. Thus we require both link_up and tx_enabled
350 * in order to include it in the tx set.
352 tx_enabled = linfo->link_up && linfo->tx_enabled;
354 if (tx_enabled == dp->lag_tx_enabled)
357 dp->lag_tx_enabled = tx_enabled;
359 return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info);
362 int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag,
363 struct netdev_lag_upper_info *uinfo,
364 struct netlink_ext_ack *extack)
366 struct dsa_notifier_lag_info info = {
367 .sw_index = dp->ds->index,
372 struct net_device *bridge_dev;
375 dsa_lag_map(dp->ds->dst, lag);
378 err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info);
382 bridge_dev = netdev_master_upper_dev_get(lag);
383 if (!bridge_dev || !netif_is_bridge_master(bridge_dev))
386 err = dsa_port_bridge_join(dp, bridge_dev, extack);
388 goto err_bridge_join;
393 dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
396 dsa_lag_unmap(dp->ds->dst, lag);
400 int dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag,
401 struct netlink_ext_ack *extack)
404 return dsa_port_pre_bridge_leave(dp, dp->bridge_dev, extack);
409 void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag)
411 struct dsa_notifier_lag_info info = {
412 .sw_index = dp->ds->index,
421 /* Port might have been part of a LAG that in turn was
422 * attached to a bridge.
425 dsa_port_bridge_leave(dp, dp->bridge_dev);
427 dp->lag_tx_enabled = false;
430 err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info);
432 pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n",
435 dsa_lag_unmap(dp->ds->dst, lag);
438 /* Must be called under rcu_read_lock() */
439 static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp,
441 struct netlink_ext_ack *extack)
443 struct dsa_switch *ds = dp->ds;
446 /* VLAN awareness was off, so the question is "can we turn it on".
447 * We may have had 8021q uppers, those need to go. Make sure we don't
448 * enter an inconsistent state: deny changing the VLAN awareness state
449 * as long as we have 8021q uppers.
451 if (vlan_filtering && dsa_is_user_port(ds, dp->index)) {
452 struct net_device *upper_dev, *slave = dp->slave;
453 struct net_device *br = dp->bridge_dev;
454 struct list_head *iter;
456 netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
457 struct bridge_vlan_info br_info;
460 if (!is_vlan_dev(upper_dev))
463 vid = vlan_dev_vlan_id(upper_dev);
465 /* br_vlan_get_info() returns -EINVAL or -ENOENT if the
466 * device, respectively the VID is not found, returning
467 * 0 means success, which is a failure for us here.
469 err = br_vlan_get_info(br, vid, &br_info);
471 NL_SET_ERR_MSG_MOD(extack,
472 "Must first remove VLAN uppers having VIDs also present in bridge");
478 if (!ds->vlan_filtering_is_global)
481 /* For cases where enabling/disabling VLAN awareness is global to the
482 * switch, we need to handle the case where multiple bridges span
483 * different ports of the same switch device and one of them has a
484 * different setting than what is being requested.
486 for (i = 0; i < ds->num_ports; i++) {
487 struct net_device *other_bridge;
489 other_bridge = dsa_to_port(ds, i)->bridge_dev;
492 /* If it's the same bridge, it also has same
493 * vlan_filtering setting => no need to check
495 if (other_bridge == dp->bridge_dev)
497 if (br_vlan_enabled(other_bridge) != vlan_filtering) {
498 NL_SET_ERR_MSG_MOD(extack,
499 "VLAN filtering is a global setting");
506 int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
507 struct netlink_ext_ack *extack)
509 struct dsa_switch *ds = dp->ds;
513 if (!ds->ops->port_vlan_filtering)
516 /* We are called from dsa_slave_switchdev_blocking_event(),
517 * which is not under rcu_read_lock(), unlike
518 * dsa_slave_switchdev_event().
521 apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack);
526 if (dsa_port_is_vlan_filtering(dp) == vlan_filtering)
529 err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering,
534 if (ds->vlan_filtering_is_global)
535 ds->vlan_filtering = vlan_filtering;
537 dp->vlan_filtering = vlan_filtering;
542 /* This enforces legacy behavior for switch drivers which assume they can't
543 * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0
545 bool dsa_port_skip_vlan_configuration(struct dsa_port *dp)
547 struct dsa_switch *ds = dp->ds;
552 return (!ds->configure_vlan_while_not_filtering &&
553 !br_vlan_enabled(dp->bridge_dev));
556 int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock)
558 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock);
559 unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
560 struct dsa_notifier_ageing_time_info info;
563 info.ageing_time = ageing_time;
565 err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info);
569 dp->ageing_time = ageing_time;
574 int dsa_port_pre_bridge_flags(const struct dsa_port *dp,
575 struct switchdev_brport_flags flags,
576 struct netlink_ext_ack *extack)
578 struct dsa_switch *ds = dp->ds;
580 if (!ds->ops->port_pre_bridge_flags)
583 return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack);
586 int dsa_port_bridge_flags(const struct dsa_port *dp,
587 struct switchdev_brport_flags flags,
588 struct netlink_ext_ack *extack)
590 struct dsa_switch *ds = dp->ds;
592 if (!ds->ops->port_bridge_flags)
595 return ds->ops->port_bridge_flags(ds, dp->index, flags, extack);
598 int dsa_port_mrouter(struct dsa_port *dp, bool mrouter,
599 struct netlink_ext_ack *extack)
601 struct dsa_switch *ds = dp->ds;
603 if (!ds->ops->port_set_mrouter)
606 return ds->ops->port_set_mrouter(ds, dp->index, mrouter, extack);
609 int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
612 struct dsa_notifier_mtu_info info = {
613 .sw_index = dp->ds->index,
614 .targeted_match = targeted_match,
619 return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info);
622 int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
625 struct dsa_notifier_fdb_info info = {
626 .sw_index = dp->ds->index,
632 return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info);
635 int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
638 struct dsa_notifier_fdb_info info = {
639 .sw_index = dp->ds->index,
646 return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info);
649 int dsa_port_host_fdb_add(struct dsa_port *dp, const unsigned char *addr,
652 struct dsa_notifier_fdb_info info = {
653 .sw_index = dp->ds->index,
659 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_ADD, &info);
662 int dsa_port_host_fdb_del(struct dsa_port *dp, const unsigned char *addr,
665 struct dsa_notifier_fdb_info info = {
666 .sw_index = dp->ds->index,
672 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_DEL, &info);
675 int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data)
677 struct dsa_switch *ds = dp->ds;
678 int port = dp->index;
680 if (!ds->ops->port_fdb_dump)
683 return ds->ops->port_fdb_dump(ds, port, cb, data);
686 int dsa_port_mdb_add(const struct dsa_port *dp,
687 const struct switchdev_obj_port_mdb *mdb)
689 struct dsa_notifier_mdb_info info = {
690 .sw_index = dp->ds->index,
695 return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info);
698 int dsa_port_mdb_del(const struct dsa_port *dp,
699 const struct switchdev_obj_port_mdb *mdb)
701 struct dsa_notifier_mdb_info info = {
702 .sw_index = dp->ds->index,
707 return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
710 int dsa_port_host_mdb_add(const struct dsa_port *dp,
711 const struct switchdev_obj_port_mdb *mdb)
713 struct dsa_notifier_mdb_info info = {
714 .sw_index = dp->ds->index,
719 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_ADD, &info);
722 int dsa_port_host_mdb_del(const struct dsa_port *dp,
723 const struct switchdev_obj_port_mdb *mdb)
725 struct dsa_notifier_mdb_info info = {
726 .sw_index = dp->ds->index,
731 return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_DEL, &info);
734 int dsa_port_vlan_add(struct dsa_port *dp,
735 const struct switchdev_obj_port_vlan *vlan,
736 struct netlink_ext_ack *extack)
738 struct dsa_notifier_vlan_info info = {
739 .sw_index = dp->ds->index,
745 return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info);
748 int dsa_port_vlan_del(struct dsa_port *dp,
749 const struct switchdev_obj_port_vlan *vlan)
751 struct dsa_notifier_vlan_info info = {
752 .sw_index = dp->ds->index,
757 return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
760 int dsa_port_mrp_add(const struct dsa_port *dp,
761 const struct switchdev_obj_mrp *mrp)
763 struct dsa_notifier_mrp_info info = {
764 .sw_index = dp->ds->index,
769 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info);
772 int dsa_port_mrp_del(const struct dsa_port *dp,
773 const struct switchdev_obj_mrp *mrp)
775 struct dsa_notifier_mrp_info info = {
776 .sw_index = dp->ds->index,
781 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info);
784 int dsa_port_mrp_add_ring_role(const struct dsa_port *dp,
785 const struct switchdev_obj_ring_role_mrp *mrp)
787 struct dsa_notifier_mrp_ring_role_info info = {
788 .sw_index = dp->ds->index,
793 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info);
796 int dsa_port_mrp_del_ring_role(const struct dsa_port *dp,
797 const struct switchdev_obj_ring_role_mrp *mrp)
799 struct dsa_notifier_mrp_ring_role_info info = {
800 .sw_index = dp->ds->index,
805 return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info);
808 void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp,
809 const struct dsa_device_ops *tag_ops)
811 cpu_dp->filter = tag_ops->filter;
812 cpu_dp->rcv = tag_ops->rcv;
813 cpu_dp->tag_ops = tag_ops;
816 static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
818 struct device_node *phy_dn;
819 struct phy_device *phydev;
821 phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0);
825 phydev = of_phy_find_device(phy_dn);
828 return ERR_PTR(-EPROBE_DEFER);
835 static void dsa_port_phylink_validate(struct phylink_config *config,
836 unsigned long *supported,
837 struct phylink_link_state *state)
839 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
840 struct dsa_switch *ds = dp->ds;
842 if (!ds->ops->phylink_validate)
845 ds->ops->phylink_validate(ds, dp->index, supported, state);
848 static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config,
849 struct phylink_link_state *state)
851 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
852 struct dsa_switch *ds = dp->ds;
855 /* Only called for inband modes */
856 if (!ds->ops->phylink_mac_link_state) {
861 err = ds->ops->phylink_mac_link_state(ds, dp->index, state);
863 dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n",
869 static void dsa_port_phylink_mac_config(struct phylink_config *config,
871 const struct phylink_link_state *state)
873 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
874 struct dsa_switch *ds = dp->ds;
876 if (!ds->ops->phylink_mac_config)
879 ds->ops->phylink_mac_config(ds, dp->index, mode, state);
882 static void dsa_port_phylink_mac_an_restart(struct phylink_config *config)
884 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
885 struct dsa_switch *ds = dp->ds;
887 if (!ds->ops->phylink_mac_an_restart)
890 ds->ops->phylink_mac_an_restart(ds, dp->index);
893 static void dsa_port_phylink_mac_link_down(struct phylink_config *config,
895 phy_interface_t interface)
897 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
898 struct phy_device *phydev = NULL;
899 struct dsa_switch *ds = dp->ds;
901 if (dsa_is_user_port(ds, dp->index))
902 phydev = dp->slave->phydev;
904 if (!ds->ops->phylink_mac_link_down) {
905 if (ds->ops->adjust_link && phydev)
906 ds->ops->adjust_link(ds, dp->index, phydev);
910 ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface);
913 static void dsa_port_phylink_mac_link_up(struct phylink_config *config,
914 struct phy_device *phydev,
916 phy_interface_t interface,
917 int speed, int duplex,
918 bool tx_pause, bool rx_pause)
920 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
921 struct dsa_switch *ds = dp->ds;
923 if (!ds->ops->phylink_mac_link_up) {
924 if (ds->ops->adjust_link && phydev)
925 ds->ops->adjust_link(ds, dp->index, phydev);
929 ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev,
930 speed, duplex, tx_pause, rx_pause);
933 const struct phylink_mac_ops dsa_port_phylink_mac_ops = {
934 .validate = dsa_port_phylink_validate,
935 .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state,
936 .mac_config = dsa_port_phylink_mac_config,
937 .mac_an_restart = dsa_port_phylink_mac_an_restart,
938 .mac_link_down = dsa_port_phylink_mac_link_down,
939 .mac_link_up = dsa_port_phylink_mac_link_up,
942 static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable)
944 struct dsa_switch *ds = dp->ds;
945 struct phy_device *phydev;
946 int port = dp->index;
949 phydev = dsa_port_get_phy_device(dp);
954 return PTR_ERR(phydev);
957 err = genphy_resume(phydev);
961 err = genphy_read_status(phydev);
965 err = genphy_suspend(phydev);
970 if (ds->ops->adjust_link)
971 ds->ops->adjust_link(ds, port, phydev);
973 dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev));
976 put_device(&phydev->mdio.dev);
980 static int dsa_port_fixed_link_register_of(struct dsa_port *dp)
982 struct device_node *dn = dp->dn;
983 struct dsa_switch *ds = dp->ds;
984 struct phy_device *phydev;
985 int port = dp->index;
986 phy_interface_t mode;
989 err = of_phy_register_fixed_link(dn);
992 "failed to register the fixed PHY of port %d\n",
997 phydev = of_phy_find_device(dn);
999 err = of_get_phy_mode(dn, &mode);
1001 mode = PHY_INTERFACE_MODE_NA;
1002 phydev->interface = mode;
1004 genphy_read_status(phydev);
1006 if (ds->ops->adjust_link)
1007 ds->ops->adjust_link(ds, port, phydev);
1009 put_device(&phydev->mdio.dev);
1014 static int dsa_port_phylink_register(struct dsa_port *dp)
1016 struct dsa_switch *ds = dp->ds;
1017 struct device_node *port_dn = dp->dn;
1018 phy_interface_t mode;
1021 err = of_get_phy_mode(port_dn, &mode);
1023 mode = PHY_INTERFACE_MODE_NA;
1025 dp->pl_config.dev = ds->dev;
1026 dp->pl_config.type = PHYLINK_DEV;
1027 dp->pl_config.pcs_poll = ds->pcs_poll;
1029 dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn),
1030 mode, &dsa_port_phylink_mac_ops);
1031 if (IS_ERR(dp->pl)) {
1032 pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
1033 return PTR_ERR(dp->pl);
1036 err = phylink_of_phy_connect(dp->pl, port_dn, 0);
1037 if (err && err != -ENODEV) {
1038 pr_err("could not attach to PHY: %d\n", err);
1039 goto err_phy_connect;
1045 phylink_destroy(dp->pl);
1049 int dsa_port_link_register_of(struct dsa_port *dp)
1051 struct dsa_switch *ds = dp->ds;
1052 struct device_node *phy_np;
1053 int port = dp->index;
1055 if (!ds->ops->adjust_link) {
1056 phy_np = of_parse_phandle(dp->dn, "phy-handle", 0);
1057 if (of_phy_is_fixed_link(dp->dn) || phy_np) {
1058 if (ds->ops->phylink_mac_link_down)
1059 ds->ops->phylink_mac_link_down(ds, port,
1060 MLO_AN_FIXED, PHY_INTERFACE_MODE_NA);
1061 return dsa_port_phylink_register(dp);
1067 "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
1069 if (of_phy_is_fixed_link(dp->dn))
1070 return dsa_port_fixed_link_register_of(dp);
1072 return dsa_port_setup_phy_of(dp, true);
1075 void dsa_port_link_unregister_of(struct dsa_port *dp)
1077 struct dsa_switch *ds = dp->ds;
1079 if (!ds->ops->adjust_link && dp->pl) {
1081 phylink_disconnect_phy(dp->pl);
1083 phylink_destroy(dp->pl);
1088 if (of_phy_is_fixed_link(dp->dn))
1089 of_phy_deregister_fixed_link(dp->dn);
1091 dsa_port_setup_phy_of(dp, false);
1094 int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data)
1096 struct phy_device *phydev;
1097 int ret = -EOPNOTSUPP;
1099 if (of_phy_is_fixed_link(dp->dn))
1102 phydev = dsa_port_get_phy_device(dp);
1103 if (IS_ERR_OR_NULL(phydev))
1106 ret = phy_ethtool_get_strings(phydev, data);
1107 put_device(&phydev->mdio.dev);
1111 EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings);
1113 int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data)
1115 struct phy_device *phydev;
1116 int ret = -EOPNOTSUPP;
1118 if (of_phy_is_fixed_link(dp->dn))
1121 phydev = dsa_port_get_phy_device(dp);
1122 if (IS_ERR_OR_NULL(phydev))
1125 ret = phy_ethtool_get_stats(phydev, NULL, data);
1126 put_device(&phydev->mdio.dev);
1130 EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats);
1132 int dsa_port_get_phy_sset_count(struct dsa_port *dp)
1134 struct phy_device *phydev;
1135 int ret = -EOPNOTSUPP;
1137 if (of_phy_is_fixed_link(dp->dn))
1140 phydev = dsa_port_get_phy_device(dp);
1141 if (IS_ERR_OR_NULL(phydev))
1144 ret = phy_ethtool_get_sset_count(phydev);
1145 put_device(&phydev->mdio.dev);
1149 EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count);
1151 int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr)
1153 struct dsa_notifier_hsr_info info = {
1154 .sw_index = dp->ds->index,
1162 err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info);
1169 void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr)
1171 struct dsa_notifier_hsr_info info = {
1172 .sw_index = dp->ds->index,
1180 err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info);
1182 pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n");