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 /* Forwarding and termination FDB entries on the port */
203 err
= br_fdb_replay(br
, brport_dev
, dp
, true,
204 &dsa_slave_switchdev_notifier
);
205 if (err
&& err
!= -EOPNOTSUPP
)
208 /* Termination FDB entries on the bridge itself */
209 err
= br_fdb_replay(br
, br
, dp
, true, &dsa_slave_switchdev_notifier
);
210 if (err
&& err
!= -EOPNOTSUPP
)
213 err
= br_vlan_replay(br
, brport_dev
, dp
, true,
214 &dsa_slave_switchdev_blocking_notifier
, extack
);
215 if (err
&& err
!= -EOPNOTSUPP
)
221 static int dsa_port_switchdev_unsync_objs(struct dsa_port
*dp
,
222 struct net_device
*br
,
223 struct netlink_ext_ack
*extack
)
225 struct net_device
*brport_dev
= dsa_port_to_bridge_port(dp
);
228 /* Delete the switchdev objects left on this port */
229 err
= br_mdb_replay(br
, brport_dev
, dp
, false,
230 &dsa_slave_switchdev_blocking_notifier
, extack
);
231 if (err
&& err
!= -EOPNOTSUPP
)
234 /* Forwarding and termination FDB entries on the port */
235 err
= br_fdb_replay(br
, brport_dev
, dp
, false,
236 &dsa_slave_switchdev_notifier
);
237 if (err
&& err
!= -EOPNOTSUPP
)
240 /* Termination FDB entries on the bridge itself */
241 err
= br_fdb_replay(br
, br
, dp
, false, &dsa_slave_switchdev_notifier
);
242 if (err
&& err
!= -EOPNOTSUPP
)
245 err
= br_vlan_replay(br
, brport_dev
, dp
, false,
246 &dsa_slave_switchdev_blocking_notifier
, extack
);
247 if (err
&& err
!= -EOPNOTSUPP
)
253 static void dsa_port_switchdev_unsync_attrs(struct dsa_port
*dp
)
255 /* Configure the port for standalone mode (no address learning,
257 * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events
258 * when the user requests it through netlink or sysfs, but not
259 * automatically at port join or leave, so we need to handle resetting
260 * the brport flags ourselves. But we even prefer it that way, because
261 * otherwise, some setups might never get the notification they need,
262 * for example, when a port leaves a LAG that offloads the bridge,
263 * it becomes standalone, but as far as the bridge is concerned, no
266 dsa_port_clear_brport_flags(dp
);
268 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
269 * so allow it to be in BR_STATE_FORWARDING to be kept functional
271 dsa_port_set_state_now(dp
, BR_STATE_FORWARDING
);
273 /* VLAN filtering is handled by dsa_switch_bridge_leave */
275 /* Some drivers treat the notification for having a local multicast
276 * router by allowing multicast to be flooded to the CPU, so we should
277 * allow this in standalone mode too.
279 dsa_port_mrouter(dp
->cpu_dp
, true, NULL
);
281 /* Ageing time may be global to the switch chip, so don't change it
282 * here because we have no good reason (or value) to change it to.
286 int dsa_port_bridge_join(struct dsa_port
*dp
, struct net_device
*br
,
287 struct netlink_ext_ack
*extack
)
289 struct dsa_notifier_bridge_info info
= {
290 .tree_index
= dp
->ds
->dst
->index
,
291 .sw_index
= dp
->ds
->index
,
297 /* Here the interface is already bridged. Reflect the current
298 * configuration so that drivers can program their chips accordingly.
302 err
= dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN
, &info
);
306 err
= dsa_port_switchdev_sync(dp
, extack
);
308 goto out_rollback_unbridge
;
312 out_rollback_unbridge
:
313 dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE
, &info
);
315 dp
->bridge_dev
= NULL
;
319 int dsa_port_pre_bridge_leave(struct dsa_port
*dp
, struct net_device
*br
,
320 struct netlink_ext_ack
*extack
)
322 return dsa_port_switchdev_unsync_objs(dp
, br
, extack
);
325 void dsa_port_bridge_leave(struct dsa_port
*dp
, struct net_device
*br
)
327 struct dsa_notifier_bridge_info info
= {
328 .tree_index
= dp
->ds
->dst
->index
,
329 .sw_index
= dp
->ds
->index
,
335 /* Here the port is already unbridged. Reflect the current configuration
336 * so that drivers can program their chips accordingly.
338 dp
->bridge_dev
= NULL
;
340 err
= dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE
, &info
);
342 pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n");
344 dsa_port_switchdev_unsync_attrs(dp
);
347 int dsa_port_lag_change(struct dsa_port
*dp
,
348 struct netdev_lag_lower_state_info
*linfo
)
350 struct dsa_notifier_lag_info info
= {
351 .sw_index
= dp
->ds
->index
,
359 /* On statically configured aggregates (e.g. loadbalance
360 * without LACP) ports will always be tx_enabled, even if the
361 * link is down. Thus we require both link_up and tx_enabled
362 * in order to include it in the tx set.
364 tx_enabled
= linfo
->link_up
&& linfo
->tx_enabled
;
366 if (tx_enabled
== dp
->lag_tx_enabled
)
369 dp
->lag_tx_enabled
= tx_enabled
;
371 return dsa_port_notify(dp
, DSA_NOTIFIER_LAG_CHANGE
, &info
);
374 int dsa_port_lag_join(struct dsa_port
*dp
, struct net_device
*lag
,
375 struct netdev_lag_upper_info
*uinfo
,
376 struct netlink_ext_ack
*extack
)
378 struct dsa_notifier_lag_info info
= {
379 .sw_index
= dp
->ds
->index
,
384 struct net_device
*bridge_dev
;
387 dsa_lag_map(dp
->ds
->dst
, lag
);
390 err
= dsa_port_notify(dp
, DSA_NOTIFIER_LAG_JOIN
, &info
);
394 bridge_dev
= netdev_master_upper_dev_get(lag
);
395 if (!bridge_dev
|| !netif_is_bridge_master(bridge_dev
))
398 err
= dsa_port_bridge_join(dp
, bridge_dev
, extack
);
400 goto err_bridge_join
;
405 dsa_port_notify(dp
, DSA_NOTIFIER_LAG_LEAVE
, &info
);
408 dsa_lag_unmap(dp
->ds
->dst
, lag
);
412 int dsa_port_pre_lag_leave(struct dsa_port
*dp
, struct net_device
*lag
,
413 struct netlink_ext_ack
*extack
)
416 return dsa_port_pre_bridge_leave(dp
, dp
->bridge_dev
, extack
);
421 void dsa_port_lag_leave(struct dsa_port
*dp
, struct net_device
*lag
)
423 struct dsa_notifier_lag_info info
= {
424 .sw_index
= dp
->ds
->index
,
433 /* Port might have been part of a LAG that in turn was
434 * attached to a bridge.
437 dsa_port_bridge_leave(dp
, dp
->bridge_dev
);
439 dp
->lag_tx_enabled
= false;
442 err
= dsa_port_notify(dp
, DSA_NOTIFIER_LAG_LEAVE
, &info
);
444 pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n",
447 dsa_lag_unmap(dp
->ds
->dst
, lag
);
450 /* Must be called under rcu_read_lock() */
451 static bool dsa_port_can_apply_vlan_filtering(struct dsa_port
*dp
,
453 struct netlink_ext_ack
*extack
)
455 struct dsa_switch
*ds
= dp
->ds
;
458 /* VLAN awareness was off, so the question is "can we turn it on".
459 * We may have had 8021q uppers, those need to go. Make sure we don't
460 * enter an inconsistent state: deny changing the VLAN awareness state
461 * as long as we have 8021q uppers.
463 if (vlan_filtering
&& dsa_is_user_port(ds
, dp
->index
)) {
464 struct net_device
*upper_dev
, *slave
= dp
->slave
;
465 struct net_device
*br
= dp
->bridge_dev
;
466 struct list_head
*iter
;
468 netdev_for_each_upper_dev_rcu(slave
, upper_dev
, iter
) {
469 struct bridge_vlan_info br_info
;
472 if (!is_vlan_dev(upper_dev
))
475 vid
= vlan_dev_vlan_id(upper_dev
);
477 /* br_vlan_get_info() returns -EINVAL or -ENOENT if the
478 * device, respectively the VID is not found, returning
479 * 0 means success, which is a failure for us here.
481 err
= br_vlan_get_info(br
, vid
, &br_info
);
483 NL_SET_ERR_MSG_MOD(extack
,
484 "Must first remove VLAN uppers having VIDs also present in bridge");
490 if (!ds
->vlan_filtering_is_global
)
493 /* For cases where enabling/disabling VLAN awareness is global to the
494 * switch, we need to handle the case where multiple bridges span
495 * different ports of the same switch device and one of them has a
496 * different setting than what is being requested.
498 for (i
= 0; i
< ds
->num_ports
; i
++) {
499 struct net_device
*other_bridge
;
501 other_bridge
= dsa_to_port(ds
, i
)->bridge_dev
;
504 /* If it's the same bridge, it also has same
505 * vlan_filtering setting => no need to check
507 if (other_bridge
== dp
->bridge_dev
)
509 if (br_vlan_enabled(other_bridge
) != vlan_filtering
) {
510 NL_SET_ERR_MSG_MOD(extack
,
511 "VLAN filtering is a global setting");
518 int dsa_port_vlan_filtering(struct dsa_port
*dp
, bool vlan_filtering
,
519 struct netlink_ext_ack
*extack
)
521 struct dsa_switch
*ds
= dp
->ds
;
525 if (!ds
->ops
->port_vlan_filtering
)
528 /* We are called from dsa_slave_switchdev_blocking_event(),
529 * which is not under rcu_read_lock(), unlike
530 * dsa_slave_switchdev_event().
533 apply
= dsa_port_can_apply_vlan_filtering(dp
, vlan_filtering
, extack
);
538 if (dsa_port_is_vlan_filtering(dp
) == vlan_filtering
)
541 err
= ds
->ops
->port_vlan_filtering(ds
, dp
->index
, vlan_filtering
,
546 if (ds
->vlan_filtering_is_global
)
547 ds
->vlan_filtering
= vlan_filtering
;
549 dp
->vlan_filtering
= vlan_filtering
;
554 /* This enforces legacy behavior for switch drivers which assume they can't
555 * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0
557 bool dsa_port_skip_vlan_configuration(struct dsa_port
*dp
)
559 struct dsa_switch
*ds
= dp
->ds
;
564 return (!ds
->configure_vlan_while_not_filtering
&&
565 !br_vlan_enabled(dp
->bridge_dev
));
568 int dsa_port_ageing_time(struct dsa_port
*dp
, clock_t ageing_clock
)
570 unsigned long ageing_jiffies
= clock_t_to_jiffies(ageing_clock
);
571 unsigned int ageing_time
= jiffies_to_msecs(ageing_jiffies
);
572 struct dsa_notifier_ageing_time_info info
;
575 info
.ageing_time
= ageing_time
;
577 err
= dsa_port_notify(dp
, DSA_NOTIFIER_AGEING_TIME
, &info
);
581 dp
->ageing_time
= ageing_time
;
586 int dsa_port_pre_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_pre_bridge_flags
)
595 return ds
->ops
->port_pre_bridge_flags(ds
, dp
->index
, flags
, extack
);
598 int dsa_port_bridge_flags(const struct dsa_port
*dp
,
599 struct switchdev_brport_flags flags
,
600 struct netlink_ext_ack
*extack
)
602 struct dsa_switch
*ds
= dp
->ds
;
604 if (!ds
->ops
->port_bridge_flags
)
607 return ds
->ops
->port_bridge_flags(ds
, dp
->index
, flags
, extack
);
610 int dsa_port_mrouter(struct dsa_port
*dp
, bool mrouter
,
611 struct netlink_ext_ack
*extack
)
613 struct dsa_switch
*ds
= dp
->ds
;
615 if (!ds
->ops
->port_set_mrouter
)
618 return ds
->ops
->port_set_mrouter(ds
, dp
->index
, mrouter
, extack
);
621 int dsa_port_mtu_change(struct dsa_port
*dp
, int new_mtu
,
624 struct dsa_notifier_mtu_info info
= {
625 .sw_index
= dp
->ds
->index
,
626 .targeted_match
= targeted_match
,
631 return dsa_port_notify(dp
, DSA_NOTIFIER_MTU
, &info
);
634 int dsa_port_fdb_add(struct dsa_port
*dp
, const unsigned char *addr
,
637 struct dsa_notifier_fdb_info info
= {
638 .sw_index
= dp
->ds
->index
,
644 return dsa_port_notify(dp
, DSA_NOTIFIER_FDB_ADD
, &info
);
647 int dsa_port_fdb_del(struct dsa_port
*dp
, const unsigned char *addr
,
650 struct dsa_notifier_fdb_info info
= {
651 .sw_index
= dp
->ds
->index
,
658 return dsa_port_notify(dp
, DSA_NOTIFIER_FDB_DEL
, &info
);
661 int dsa_port_host_fdb_add(struct dsa_port
*dp
, const unsigned char *addr
,
664 struct dsa_notifier_fdb_info info
= {
665 .sw_index
= dp
->ds
->index
,
670 struct dsa_port
*cpu_dp
= dp
->cpu_dp
;
673 err
= dev_uc_add(cpu_dp
->master
, addr
);
677 return dsa_port_notify(dp
, DSA_NOTIFIER_HOST_FDB_ADD
, &info
);
680 int dsa_port_host_fdb_del(struct dsa_port
*dp
, const unsigned char *addr
,
683 struct dsa_notifier_fdb_info info
= {
684 .sw_index
= dp
->ds
->index
,
689 struct dsa_port
*cpu_dp
= dp
->cpu_dp
;
692 err
= dev_uc_del(cpu_dp
->master
, addr
);
696 return dsa_port_notify(dp
, DSA_NOTIFIER_HOST_FDB_DEL
, &info
);
699 int dsa_port_fdb_dump(struct dsa_port
*dp
, dsa_fdb_dump_cb_t
*cb
, void *data
)
701 struct dsa_switch
*ds
= dp
->ds
;
702 int port
= dp
->index
;
704 if (!ds
->ops
->port_fdb_dump
)
707 return ds
->ops
->port_fdb_dump(ds
, port
, cb
, data
);
710 int dsa_port_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_MDB_ADD
, &info
);
722 int dsa_port_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_MDB_DEL
, &info
);
734 int dsa_port_host_mdb_add(const struct dsa_port
*dp
,
735 const struct switchdev_obj_port_mdb
*mdb
)
737 struct dsa_notifier_mdb_info info
= {
738 .sw_index
= dp
->ds
->index
,
742 struct dsa_port
*cpu_dp
= dp
->cpu_dp
;
745 err
= dev_mc_add(cpu_dp
->master
, mdb
->addr
);
749 return dsa_port_notify(dp
, DSA_NOTIFIER_HOST_MDB_ADD
, &info
);
752 int dsa_port_host_mdb_del(const struct dsa_port
*dp
,
753 const struct switchdev_obj_port_mdb
*mdb
)
755 struct dsa_notifier_mdb_info info
= {
756 .sw_index
= dp
->ds
->index
,
760 struct dsa_port
*cpu_dp
= dp
->cpu_dp
;
763 err
= dev_mc_del(cpu_dp
->master
, mdb
->addr
);
767 return dsa_port_notify(dp
, DSA_NOTIFIER_HOST_MDB_DEL
, &info
);
770 int dsa_port_vlan_add(struct dsa_port
*dp
,
771 const struct switchdev_obj_port_vlan
*vlan
,
772 struct netlink_ext_ack
*extack
)
774 struct dsa_notifier_vlan_info info
= {
775 .sw_index
= dp
->ds
->index
,
781 return dsa_port_notify(dp
, DSA_NOTIFIER_VLAN_ADD
, &info
);
784 int dsa_port_vlan_del(struct dsa_port
*dp
,
785 const struct switchdev_obj_port_vlan
*vlan
)
787 struct dsa_notifier_vlan_info info
= {
788 .sw_index
= dp
->ds
->index
,
793 return dsa_port_notify(dp
, DSA_NOTIFIER_VLAN_DEL
, &info
);
796 int dsa_port_mrp_add(const struct dsa_port
*dp
,
797 const struct switchdev_obj_mrp
*mrp
)
799 struct dsa_notifier_mrp_info info
= {
800 .sw_index
= dp
->ds
->index
,
805 return dsa_port_notify(dp
, DSA_NOTIFIER_MRP_ADD
, &info
);
808 int dsa_port_mrp_del(const struct dsa_port
*dp
,
809 const struct switchdev_obj_mrp
*mrp
)
811 struct dsa_notifier_mrp_info info
= {
812 .sw_index
= dp
->ds
->index
,
817 return dsa_port_notify(dp
, DSA_NOTIFIER_MRP_DEL
, &info
);
820 int dsa_port_mrp_add_ring_role(const struct dsa_port
*dp
,
821 const struct switchdev_obj_ring_role_mrp
*mrp
)
823 struct dsa_notifier_mrp_ring_role_info info
= {
824 .sw_index
= dp
->ds
->index
,
829 return dsa_port_notify(dp
, DSA_NOTIFIER_MRP_ADD_RING_ROLE
, &info
);
832 int dsa_port_mrp_del_ring_role(const struct dsa_port
*dp
,
833 const struct switchdev_obj_ring_role_mrp
*mrp
)
835 struct dsa_notifier_mrp_ring_role_info info
= {
836 .sw_index
= dp
->ds
->index
,
841 return dsa_port_notify(dp
, DSA_NOTIFIER_MRP_DEL_RING_ROLE
, &info
);
844 void dsa_port_set_tag_protocol(struct dsa_port
*cpu_dp
,
845 const struct dsa_device_ops
*tag_ops
)
847 cpu_dp
->filter
= tag_ops
->filter
;
848 cpu_dp
->rcv
= tag_ops
->rcv
;
849 cpu_dp
->tag_ops
= tag_ops
;
852 static struct phy_device
*dsa_port_get_phy_device(struct dsa_port
*dp
)
854 struct device_node
*phy_dn
;
855 struct phy_device
*phydev
;
857 phy_dn
= of_parse_phandle(dp
->dn
, "phy-handle", 0);
861 phydev
= of_phy_find_device(phy_dn
);
864 return ERR_PTR(-EPROBE_DEFER
);
871 static void dsa_port_phylink_validate(struct phylink_config
*config
,
872 unsigned long *supported
,
873 struct phylink_link_state
*state
)
875 struct dsa_port
*dp
= container_of(config
, struct dsa_port
, pl_config
);
876 struct dsa_switch
*ds
= dp
->ds
;
878 if (!ds
->ops
->phylink_validate
)
881 ds
->ops
->phylink_validate(ds
, dp
->index
, supported
, state
);
884 static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config
*config
,
885 struct phylink_link_state
*state
)
887 struct dsa_port
*dp
= container_of(config
, struct dsa_port
, pl_config
);
888 struct dsa_switch
*ds
= dp
->ds
;
891 /* Only called for inband modes */
892 if (!ds
->ops
->phylink_mac_link_state
) {
897 err
= ds
->ops
->phylink_mac_link_state(ds
, dp
->index
, state
);
899 dev_err(ds
->dev
, "p%d: phylink_mac_link_state() failed: %d\n",
905 static void dsa_port_phylink_mac_config(struct phylink_config
*config
,
907 const struct phylink_link_state
*state
)
909 struct dsa_port
*dp
= container_of(config
, struct dsa_port
, pl_config
);
910 struct dsa_switch
*ds
= dp
->ds
;
912 if (!ds
->ops
->phylink_mac_config
)
915 ds
->ops
->phylink_mac_config(ds
, dp
->index
, mode
, state
);
918 static void dsa_port_phylink_mac_an_restart(struct phylink_config
*config
)
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_an_restart
)
926 ds
->ops
->phylink_mac_an_restart(ds
, dp
->index
);
929 static void dsa_port_phylink_mac_link_down(struct phylink_config
*config
,
931 phy_interface_t interface
)
933 struct dsa_port
*dp
= container_of(config
, struct dsa_port
, pl_config
);
934 struct phy_device
*phydev
= NULL
;
935 struct dsa_switch
*ds
= dp
->ds
;
937 if (dsa_is_user_port(ds
, dp
->index
))
938 phydev
= dp
->slave
->phydev
;
940 if (!ds
->ops
->phylink_mac_link_down
) {
941 if (ds
->ops
->adjust_link
&& phydev
)
942 ds
->ops
->adjust_link(ds
, dp
->index
, phydev
);
946 ds
->ops
->phylink_mac_link_down(ds
, dp
->index
, mode
, interface
);
949 static void dsa_port_phylink_mac_link_up(struct phylink_config
*config
,
950 struct phy_device
*phydev
,
952 phy_interface_t interface
,
953 int speed
, int duplex
,
954 bool tx_pause
, bool rx_pause
)
956 struct dsa_port
*dp
= container_of(config
, struct dsa_port
, pl_config
);
957 struct dsa_switch
*ds
= dp
->ds
;
959 if (!ds
->ops
->phylink_mac_link_up
) {
960 if (ds
->ops
->adjust_link
&& phydev
)
961 ds
->ops
->adjust_link(ds
, dp
->index
, phydev
);
965 ds
->ops
->phylink_mac_link_up(ds
, dp
->index
, mode
, interface
, phydev
,
966 speed
, duplex
, tx_pause
, rx_pause
);
969 const struct phylink_mac_ops dsa_port_phylink_mac_ops
= {
970 .validate
= dsa_port_phylink_validate
,
971 .mac_pcs_get_state
= dsa_port_phylink_mac_pcs_get_state
,
972 .mac_config
= dsa_port_phylink_mac_config
,
973 .mac_an_restart
= dsa_port_phylink_mac_an_restart
,
974 .mac_link_down
= dsa_port_phylink_mac_link_down
,
975 .mac_link_up
= dsa_port_phylink_mac_link_up
,
978 static int dsa_port_setup_phy_of(struct dsa_port
*dp
, bool enable
)
980 struct dsa_switch
*ds
= dp
->ds
;
981 struct phy_device
*phydev
;
982 int port
= dp
->index
;
985 phydev
= dsa_port_get_phy_device(dp
);
990 return PTR_ERR(phydev
);
993 err
= genphy_resume(phydev
);
997 err
= genphy_read_status(phydev
);
1001 err
= genphy_suspend(phydev
);
1006 if (ds
->ops
->adjust_link
)
1007 ds
->ops
->adjust_link(ds
, port
, phydev
);
1009 dev_dbg(ds
->dev
, "enabled port's phy: %s", phydev_name(phydev
));
1012 put_device(&phydev
->mdio
.dev
);
1016 static int dsa_port_fixed_link_register_of(struct dsa_port
*dp
)
1018 struct device_node
*dn
= dp
->dn
;
1019 struct dsa_switch
*ds
= dp
->ds
;
1020 struct phy_device
*phydev
;
1021 int port
= dp
->index
;
1022 phy_interface_t mode
;
1025 err
= of_phy_register_fixed_link(dn
);
1028 "failed to register the fixed PHY of port %d\n",
1033 phydev
= of_phy_find_device(dn
);
1035 err
= of_get_phy_mode(dn
, &mode
);
1037 mode
= PHY_INTERFACE_MODE_NA
;
1038 phydev
->interface
= mode
;
1040 genphy_read_status(phydev
);
1042 if (ds
->ops
->adjust_link
)
1043 ds
->ops
->adjust_link(ds
, port
, phydev
);
1045 put_device(&phydev
->mdio
.dev
);
1050 static int dsa_port_phylink_register(struct dsa_port
*dp
)
1052 struct dsa_switch
*ds
= dp
->ds
;
1053 struct device_node
*port_dn
= dp
->dn
;
1054 phy_interface_t mode
;
1057 err
= of_get_phy_mode(port_dn
, &mode
);
1059 mode
= PHY_INTERFACE_MODE_NA
;
1061 dp
->pl_config
.dev
= ds
->dev
;
1062 dp
->pl_config
.type
= PHYLINK_DEV
;
1063 dp
->pl_config
.pcs_poll
= ds
->pcs_poll
;
1065 dp
->pl
= phylink_create(&dp
->pl_config
, of_fwnode_handle(port_dn
),
1066 mode
, &dsa_port_phylink_mac_ops
);
1067 if (IS_ERR(dp
->pl
)) {
1068 pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp
->pl
));
1069 return PTR_ERR(dp
->pl
);
1072 err
= phylink_of_phy_connect(dp
->pl
, port_dn
, 0);
1073 if (err
&& err
!= -ENODEV
) {
1074 pr_err("could not attach to PHY: %d\n", err
);
1075 goto err_phy_connect
;
1081 phylink_destroy(dp
->pl
);
1085 int dsa_port_link_register_of(struct dsa_port
*dp
)
1087 struct dsa_switch
*ds
= dp
->ds
;
1088 struct device_node
*phy_np
;
1089 int port
= dp
->index
;
1091 if (!ds
->ops
->adjust_link
) {
1092 phy_np
= of_parse_phandle(dp
->dn
, "phy-handle", 0);
1093 if (of_phy_is_fixed_link(dp
->dn
) || phy_np
) {
1094 if (ds
->ops
->phylink_mac_link_down
)
1095 ds
->ops
->phylink_mac_link_down(ds
, port
,
1096 MLO_AN_FIXED
, PHY_INTERFACE_MODE_NA
);
1097 return dsa_port_phylink_register(dp
);
1103 "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
1105 if (of_phy_is_fixed_link(dp
->dn
))
1106 return dsa_port_fixed_link_register_of(dp
);
1108 return dsa_port_setup_phy_of(dp
, true);
1111 void dsa_port_link_unregister_of(struct dsa_port
*dp
)
1113 struct dsa_switch
*ds
= dp
->ds
;
1115 if (!ds
->ops
->adjust_link
&& dp
->pl
) {
1117 phylink_disconnect_phy(dp
->pl
);
1119 phylink_destroy(dp
->pl
);
1124 if (of_phy_is_fixed_link(dp
->dn
))
1125 of_phy_deregister_fixed_link(dp
->dn
);
1127 dsa_port_setup_phy_of(dp
, false);
1130 int dsa_port_get_phy_strings(struct dsa_port
*dp
, uint8_t *data
)
1132 struct phy_device
*phydev
;
1133 int ret
= -EOPNOTSUPP
;
1135 if (of_phy_is_fixed_link(dp
->dn
))
1138 phydev
= dsa_port_get_phy_device(dp
);
1139 if (IS_ERR_OR_NULL(phydev
))
1142 ret
= phy_ethtool_get_strings(phydev
, data
);
1143 put_device(&phydev
->mdio
.dev
);
1147 EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings
);
1149 int dsa_port_get_ethtool_phy_stats(struct dsa_port
*dp
, uint64_t *data
)
1151 struct phy_device
*phydev
;
1152 int ret
= -EOPNOTSUPP
;
1154 if (of_phy_is_fixed_link(dp
->dn
))
1157 phydev
= dsa_port_get_phy_device(dp
);
1158 if (IS_ERR_OR_NULL(phydev
))
1161 ret
= phy_ethtool_get_stats(phydev
, NULL
, data
);
1162 put_device(&phydev
->mdio
.dev
);
1166 EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats
);
1168 int dsa_port_get_phy_sset_count(struct dsa_port
*dp
)
1170 struct phy_device
*phydev
;
1171 int ret
= -EOPNOTSUPP
;
1173 if (of_phy_is_fixed_link(dp
->dn
))
1176 phydev
= dsa_port_get_phy_device(dp
);
1177 if (IS_ERR_OR_NULL(phydev
))
1180 ret
= phy_ethtool_get_sset_count(phydev
);
1181 put_device(&phydev
->mdio
.dev
);
1185 EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count
);
1187 int dsa_port_hsr_join(struct dsa_port
*dp
, struct net_device
*hsr
)
1189 struct dsa_notifier_hsr_info info
= {
1190 .sw_index
= dp
->ds
->index
,
1198 err
= dsa_port_notify(dp
, DSA_NOTIFIER_HSR_JOIN
, &info
);
1205 void dsa_port_hsr_leave(struct dsa_port
*dp
, struct net_device
*hsr
)
1207 struct dsa_notifier_hsr_info info
= {
1208 .sw_index
= dp
->ds
->index
,
1216 err
= dsa_port_notify(dp
, DSA_NOTIFIER_HSR_LEAVE
, &info
);
1218 pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n");