1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Handling of a single switch chip, part of a switch fabric
5  * Copyright (c) 2017 Savoir-faire Linux Inc.
22 	for (i = 0; i < ds->num_ports; ++i) {  in dsa_switch_fastest_ageing_time()
25 		if (dp->ageing_time && dp->ageing_time < ageing_time)  in dsa_switch_fastest_ageing_time()
26 			ageing_time = dp->ageing_time;  in dsa_switch_fastest_ageing_time()
35 	unsigned int ageing_time = info->ageing_time;  in dsa_switch_ageing_time()
37 	if (ds->ageing_time_min && ageing_time < ds->ageing_time_min)  in dsa_switch_ageing_time()
38 		return -ERANGE;  in dsa_switch_ageing_time()
40 	if (ds->ageing_time_max && ageing_time > ds->ageing_time_max)  in dsa_switch_ageing_time()
41 		return -ERANGE;  in dsa_switch_ageing_time()
46 	if (ds->ops->set_ageing_time)  in dsa_switch_ageing_time()
47 		return ds->ops->set_ageing_time(ds, ageing_time);  in dsa_switch_ageing_time()
55 	if (ds->index == info->sw_index && port == info->port)  in dsa_switch_mtu_match()
59 	 * targeted for a single switch.  in dsa_switch_mtu_match()
61 	if (info->targeted_match)  in dsa_switch_mtu_match()
75 	if (!ds->ops->port_change_mtu)  in dsa_switch_mtu()
76 		return -EOPNOTSUPP;  in dsa_switch_mtu()
78 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_mtu()
80 			ret = ds->ops->port_change_mtu(ds, port, info->mtu);  in dsa_switch_mtu()
92 	struct dsa_switch_tree *dst = ds->dst;  in dsa_switch_bridge_join()
95 	if (dst->index == info->tree_index && ds->index == info->sw_index) {  in dsa_switch_bridge_join()
96 		if (!ds->ops->port_bridge_join)  in dsa_switch_bridge_join()
97 			return -EOPNOTSUPP;  in dsa_switch_bridge_join()
99 		err = ds->ops->port_bridge_join(ds, info->port, info->br);  in dsa_switch_bridge_join()
104 	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&  in dsa_switch_bridge_join()
105 	    ds->ops->crosschip_bridge_join) {  in dsa_switch_bridge_join()
106 		err = ds->ops->crosschip_bridge_join(ds, info->tree_index,  in dsa_switch_bridge_join()
107 						     info->sw_index,  in dsa_switch_bridge_join()
108 						     info->port, info->br);  in dsa_switch_bridge_join()
119 	struct dsa_switch_tree *dst = ds->dst;  in dsa_switch_bridge_leave()
125 	if (dst->index == info->tree_index && ds->index == info->sw_index &&  in dsa_switch_bridge_leave()
126 	    ds->ops->port_bridge_leave)  in dsa_switch_bridge_leave()
127 		ds->ops->port_bridge_leave(ds, info->port, info->br);  in dsa_switch_bridge_leave()
129 	if ((dst->index != info->tree_index || ds->index != info->sw_index) &&  in dsa_switch_bridge_leave()
130 	    ds->ops->crosschip_bridge_leave)  in dsa_switch_bridge_leave()
131 		ds->ops->crosschip_bridge_leave(ds, info->tree_index,  in dsa_switch_bridge_leave()
132 						info->sw_index, info->port,  in dsa_switch_bridge_leave()
133 						info->br);  in dsa_switch_bridge_leave()
135 	if (ds->needs_standalone_vlan_filtering && !br_vlan_enabled(info->br)) {  in dsa_switch_bridge_leave()
138 	} else if (!ds->needs_standalone_vlan_filtering &&  in dsa_switch_bridge_leave()
139 		   br_vlan_enabled(info->br)) {  in dsa_switch_bridge_leave()
146 	 * it. That is a good thing, because that lets us handle it and also  in dsa_switch_bridge_leave()
150 	 * VLAN-aware bridge.  in dsa_switch_bridge_leave()
152 	if (change_vlan_filtering && ds->vlan_filtering_is_global) {  in dsa_switch_bridge_leave()
153 		for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_bridge_leave()
156 			bridge_dev = dsa_to_port(ds, port)->bridge_dev;  in dsa_switch_bridge_leave()
166 		err = dsa_port_vlan_filtering(dsa_to_port(ds, info->port),  in dsa_switch_bridge_leave()
169 			dev_err(ds->dev, "port %d: %s\n", info->port,  in dsa_switch_bridge_leave()
171 		if (err && err != -EOPNOTSUPP)  in dsa_switch_bridge_leave()
178 /* Matches for all upstream-facing ports (the CPU port and all upstream-facing
188 	targeted_ds = dsa_switch_find(ds->dst->index, info_sw_index);  in dsa_switch_host_address_match()
190 	cpu_dp = targeted_dp->cpu_dp;  in dsa_switch_host_address_match()
193 		return port == dsa_towards_port(ds, cpu_dp->ds->index,  in dsa_switch_host_address_match()
194 						cpu_dp->index);  in dsa_switch_host_address_match()
203 	struct dsa_mac_addr *a;  in dsa_mac_addr_find()  local
205 	list_for_each_entry(a, addr_list, list)  in dsa_mac_addr_find()
206 		if (ether_addr_equal(a->addr, addr) && a->vid == vid)  in dsa_mac_addr_find()
207 			return a;  in dsa_mac_addr_find()
216 	struct dsa_mac_addr *a;  in dsa_switch_do_mdb_add()  local
221 		return ds->ops->port_mdb_add(ds, port, mdb);  in dsa_switch_do_mdb_add()
223 	a = dsa_mac_addr_find(&dp->mdbs, mdb->addr, mdb->vid);  in dsa_switch_do_mdb_add()
224 	if (a) {  in dsa_switch_do_mdb_add()
225 		refcount_inc(&a->refcount);  in dsa_switch_do_mdb_add()
229 	a = kzalloc(sizeof(*a), GFP_KERNEL);  in dsa_switch_do_mdb_add()
230 	if (!a)  in dsa_switch_do_mdb_add()
231 		return -ENOMEM;  in dsa_switch_do_mdb_add()
233 	err = ds->ops->port_mdb_add(ds, port, mdb);  in dsa_switch_do_mdb_add()
235 		kfree(a);  in dsa_switch_do_mdb_add()
239 	ether_addr_copy(a->addr, mdb->addr);  in dsa_switch_do_mdb_add()
240 	a->vid = mdb->vid;  in dsa_switch_do_mdb_add()
241 	refcount_set(&a->refcount, 1);  in dsa_switch_do_mdb_add()
242 	list_add_tail(&a->list, &dp->mdbs);  in dsa_switch_do_mdb_add()
251 	struct dsa_mac_addr *a;  in dsa_switch_do_mdb_del()  local
256 		return ds->ops->port_mdb_del(ds, port, mdb);  in dsa_switch_do_mdb_del()
258 	a = dsa_mac_addr_find(&dp->mdbs, mdb->addr, mdb->vid);  in dsa_switch_do_mdb_del()
259 	if (!a)  in dsa_switch_do_mdb_del()
260 		return -ENOENT;  in dsa_switch_do_mdb_del()
262 	if (!refcount_dec_and_test(&a->refcount))  in dsa_switch_do_mdb_del()
265 	err = ds->ops->port_mdb_del(ds, port, mdb);  in dsa_switch_do_mdb_del()
267 		refcount_inc(&a->refcount);  in dsa_switch_do_mdb_del()
271 	list_del(&a->list);  in dsa_switch_do_mdb_del()
272 	kfree(a);  in dsa_switch_do_mdb_del()
281 	struct dsa_mac_addr *a;  in dsa_switch_do_fdb_add()  local
286 		return ds->ops->port_fdb_add(ds, port, addr, vid);  in dsa_switch_do_fdb_add()
288 	a = dsa_mac_addr_find(&dp->fdbs, addr, vid);  in dsa_switch_do_fdb_add()
289 	if (a) {  in dsa_switch_do_fdb_add()
290 		refcount_inc(&a->refcount);  in dsa_switch_do_fdb_add()
294 	a = kzalloc(sizeof(*a), GFP_KERNEL);  in dsa_switch_do_fdb_add()
295 	if (!a)  in dsa_switch_do_fdb_add()
296 		return -ENOMEM;  in dsa_switch_do_fdb_add()
298 	err = ds->ops->port_fdb_add(ds, port, addr, vid);  in dsa_switch_do_fdb_add()
300 		kfree(a);  in dsa_switch_do_fdb_add()
304 	ether_addr_copy(a->addr, addr);  in dsa_switch_do_fdb_add()
305 	a->vid = vid;  in dsa_switch_do_fdb_add()
306 	refcount_set(&a->refcount, 1);  in dsa_switch_do_fdb_add()
307 	list_add_tail(&a->list, &dp->fdbs);  in dsa_switch_do_fdb_add()
316 	struct dsa_mac_addr *a;  in dsa_switch_do_fdb_del()  local
321 		return ds->ops->port_fdb_del(ds, port, addr, vid);  in dsa_switch_do_fdb_del()
323 	a = dsa_mac_addr_find(&dp->fdbs, addr, vid);  in dsa_switch_do_fdb_del()
324 	if (!a)  in dsa_switch_do_fdb_del()
325 		return -ENOENT;  in dsa_switch_do_fdb_del()
327 	if (!refcount_dec_and_test(&a->refcount))  in dsa_switch_do_fdb_del()
330 	err = ds->ops->port_fdb_del(ds, port, addr, vid);  in dsa_switch_do_fdb_del()
332 		refcount_inc(&a->refcount);  in dsa_switch_do_fdb_del()
336 	list_del(&a->list);  in dsa_switch_do_fdb_del()
337 	kfree(a);  in dsa_switch_do_fdb_del()
348 	if (!ds->ops->port_fdb_add)  in dsa_switch_host_fdb_add()
349 		return -EOPNOTSUPP;  in dsa_switch_host_fdb_add()
351 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_host_fdb_add()
352 		if (dsa_switch_host_address_match(ds, port, info->sw_index,  in dsa_switch_host_fdb_add()
353 						  info->port)) {  in dsa_switch_host_fdb_add()
354 			err = dsa_switch_do_fdb_add(ds, port, info->addr,  in dsa_switch_host_fdb_add()
355 						    info->vid);  in dsa_switch_host_fdb_add()
370 	if (!ds->ops->port_fdb_del)  in dsa_switch_host_fdb_del()
371 		return -EOPNOTSUPP;  in dsa_switch_host_fdb_del()
373 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_host_fdb_del()
374 		if (dsa_switch_host_address_match(ds, port, info->sw_index,  in dsa_switch_host_fdb_del()
375 						  info->port)) {  in dsa_switch_host_fdb_del()
376 			err = dsa_switch_do_fdb_del(ds, port, info->addr,  in dsa_switch_host_fdb_del()
377 						    info->vid);  in dsa_switch_host_fdb_del()
389 	int port = dsa_towards_port(ds, info->sw_index, info->port);  in dsa_switch_fdb_add()
391 	if (!ds->ops->port_fdb_add)  in dsa_switch_fdb_add()
392 		return -EOPNOTSUPP;  in dsa_switch_fdb_add()
394 	return dsa_switch_do_fdb_add(ds, port, info->addr, info->vid);  in dsa_switch_fdb_add()
400 	int port = dsa_towards_port(ds, info->sw_index, info->port);  in dsa_switch_fdb_del()
402 	if (!ds->ops->port_fdb_del)  in dsa_switch_fdb_del()
403 		return -EOPNOTSUPP;  in dsa_switch_fdb_del()
405 	return dsa_switch_do_fdb_del(ds, port, info->addr, info->vid);  in dsa_switch_fdb_del()
411 	if (ds->index == info->sw_index && ds->ops->port_hsr_join)  in dsa_switch_hsr_join()
412 		return ds->ops->port_hsr_join(ds, info->port, info->hsr);  in dsa_switch_hsr_join()
414 	return -EOPNOTSUPP;  in dsa_switch_hsr_join()
420 	if (ds->index == info->sw_index && ds->ops->port_hsr_leave)  in dsa_switch_hsr_leave()
421 		return ds->ops->port_hsr_leave(ds, info->port, info->hsr);  in dsa_switch_hsr_leave()
423 	return -EOPNOTSUPP;  in dsa_switch_hsr_leave()
429 	if (ds->index == info->sw_index && ds->ops->port_lag_change)  in dsa_switch_lag_change()
430 		return ds->ops->port_lag_change(ds, info->port);  in dsa_switch_lag_change()
432 	if (ds->index != info->sw_index && ds->ops->crosschip_lag_change)  in dsa_switch_lag_change()
433 		return ds->ops->crosschip_lag_change(ds, info->sw_index,  in dsa_switch_lag_change()
434 						     info->port);  in dsa_switch_lag_change()
442 	if (ds->index == info->sw_index && ds->ops->port_lag_join)  in dsa_switch_lag_join()
443 		return ds->ops->port_lag_join(ds, info->port, info->lag,  in dsa_switch_lag_join()
444 					      info->info);  in dsa_switch_lag_join()
446 	if (ds->index != info->sw_index && ds->ops->crosschip_lag_join)  in dsa_switch_lag_join()
447 		return ds->ops->crosschip_lag_join(ds, info->sw_index,  in dsa_switch_lag_join()
448 						   info->port, info->lag,  in dsa_switch_lag_join()
449 						   info->info);  in dsa_switch_lag_join()
451 	return -EOPNOTSUPP;  in dsa_switch_lag_join()
457 	if (ds->index == info->sw_index && ds->ops->port_lag_leave)  in dsa_switch_lag_leave()
458 		return ds->ops->port_lag_leave(ds, info->port, info->lag);  in dsa_switch_lag_leave()
460 	if (ds->index != info->sw_index && ds->ops->crosschip_lag_leave)  in dsa_switch_lag_leave()
461 		return ds->ops->crosschip_lag_leave(ds, info->sw_index,  in dsa_switch_lag_leave()
462 						    info->port, info->lag);  in dsa_switch_lag_leave()
464 	return -EOPNOTSUPP;  in dsa_switch_lag_leave()
470 	int port = dsa_towards_port(ds, info->sw_index, info->port);  in dsa_switch_mdb_add()
472 	if (!ds->ops->port_mdb_add)  in dsa_switch_mdb_add()
473 		return -EOPNOTSUPP;  in dsa_switch_mdb_add()
475 	return dsa_switch_do_mdb_add(ds, port, info->mdb);  in dsa_switch_mdb_add()
481 	int port = dsa_towards_port(ds, info->sw_index, info->port);  in dsa_switch_mdb_del()
483 	if (!ds->ops->port_mdb_del)  in dsa_switch_mdb_del()
484 		return -EOPNOTSUPP;  in dsa_switch_mdb_del()
486 	return dsa_switch_do_mdb_del(ds, port, info->mdb);  in dsa_switch_mdb_del()
495 	if (!ds->ops->port_mdb_add)  in dsa_switch_host_mdb_add()
496 		return -EOPNOTSUPP;  in dsa_switch_host_mdb_add()
498 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_host_mdb_add()
499 		if (dsa_switch_host_address_match(ds, port, info->sw_index,  in dsa_switch_host_mdb_add()
500 						  info->port)) {  in dsa_switch_host_mdb_add()
501 			err = dsa_switch_do_mdb_add(ds, port, info->mdb);  in dsa_switch_host_mdb_add()
516 	if (!ds->ops->port_mdb_del)  in dsa_switch_host_mdb_del()
517 		return -EOPNOTSUPP;  in dsa_switch_host_mdb_del()
519 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_host_mdb_del()
520 		if (dsa_switch_host_address_match(ds, port, info->sw_index,  in dsa_switch_host_mdb_del()
521 						  info->port)) {  in dsa_switch_host_mdb_del()
522 			err = dsa_switch_do_mdb_del(ds, port, info->mdb);  in dsa_switch_host_mdb_del()
534 	if (ds->index == info->sw_index && port == info->port)  in dsa_switch_vlan_match()
548 	if (!ds->ops->port_vlan_add)  in dsa_switch_vlan_add()
549 		return -EOPNOTSUPP;  in dsa_switch_vlan_add()
551 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_vlan_add()
553 			err = ds->ops->port_vlan_add(ds, port, info->vlan,  in dsa_switch_vlan_add()
554 						     info->extack);  in dsa_switch_vlan_add()
566 	if (!ds->ops->port_vlan_del)  in dsa_switch_vlan_del()
567 		return -EOPNOTSUPP;  in dsa_switch_vlan_del()
569 	if (ds->index == info->sw_index)  in dsa_switch_vlan_del()
570 		return ds->ops->port_vlan_del(ds, info->port, info->vlan);  in dsa_switch_vlan_del()
581 	const struct dsa_device_ops *tag_ops = info->tag_ops;  in dsa_switch_change_tag_proto()
584 	if (!ds->ops->change_tag_protocol)  in dsa_switch_change_tag_proto()
585 		return -EOPNOTSUPP;  in dsa_switch_change_tag_proto()
589 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_change_tag_proto()
593 		err = ds->ops->change_tag_protocol(ds, port, tag_ops->proto);  in dsa_switch_change_tag_proto()
604 	for (port = 0; port < ds->num_ports; port++) {  in dsa_switch_change_tag_proto()
608 			slave = dsa_to_port(ds, port)->slave;  in dsa_switch_change_tag_proto()
612 			dsa_slave_change_mtu(slave, slave->mtu);  in dsa_switch_change_tag_proto()
622 	if (!ds->ops->port_mrp_add)  in dsa_switch_mrp_add()
623 		return -EOPNOTSUPP;  in dsa_switch_mrp_add()
625 	if (ds->index == info->sw_index)  in dsa_switch_mrp_add()
626 		return ds->ops->port_mrp_add(ds, info->port, info->mrp);  in dsa_switch_mrp_add()
634 	if (!ds->ops->port_mrp_del)  in dsa_switch_mrp_del()
635 		return -EOPNOTSUPP;  in dsa_switch_mrp_del()
637 	if (ds->index == info->sw_index)  in dsa_switch_mrp_del()
638 		return ds->ops->port_mrp_del(ds, info->port, info->mrp);  in dsa_switch_mrp_del()
647 	if (!ds->ops->port_mrp_add)  in dsa_switch_mrp_add_ring_role()
648 		return -EOPNOTSUPP;  in dsa_switch_mrp_add_ring_role()
650 	if (ds->index == info->sw_index)  in dsa_switch_mrp_add_ring_role()
651 		return ds->ops->port_mrp_add_ring_role(ds, info->port,  in dsa_switch_mrp_add_ring_role()
652 						       info->mrp);  in dsa_switch_mrp_add_ring_role()
661 	if (!ds->ops->port_mrp_del)  in dsa_switch_mrp_del_ring_role()
662 		return -EOPNOTSUPP;  in dsa_switch_mrp_del_ring_role()
664 	if (ds->index == info->sw_index)  in dsa_switch_mrp_del_ring_role()
665 		return ds->ops->port_mrp_del_ring_role(ds, info->port,  in dsa_switch_mrp_del_ring_role()
666 						       info->mrp);  in dsa_switch_mrp_del_ring_role()
757 		err = -EOPNOTSUPP;  in dsa_switch_event()
762 		dev_dbg(ds->dev, "breaking chain for DSA event %lu (%d)\n",  in dsa_switch_event()
770 	ds->nb.notifier_call = dsa_switch_event;  in dsa_switch_register_notifier()
772 	return raw_notifier_chain_register(&ds->dst->nh, &ds->nb);  in dsa_switch_register_notifier()
779 	err = raw_notifier_chain_unregister(&ds->dst->nh, &ds->nb);  in dsa_switch_unregister_notifier()
781 		dev_err(ds->dev, "failed to unregister notifier (%d)\n", err);  in dsa_switch_unregister_notifier()