Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
a40c175b VD |
2 | /* |
3 | * Handling of a single switch port | |
4 | * | |
5 | * Copyright (c) 2017 Savoir-faire Linux Inc. | |
6 | * Vivien Didelot <vivien.didelot@savoirfairelinux.com> | |
a40c175b VD |
7 | */ |
8 | ||
9 | #include <linux/if_bridge.h> | |
cfbed329 | 10 | #include <linux/notifier.h> |
57ab1ca2 VD |
11 | #include <linux/of_mdio.h> |
12 | #include <linux/of_net.h> | |
a40c175b VD |
13 | |
14 | #include "dsa_priv.h" | |
15 | ||
886f8e26 VO |
16 | /** |
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. | |
21 | * | |
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. | |
27 | */ | |
bb9f6031 | 28 | static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v) |
cfbed329 | 29 | { |
886f8e26 | 30 | return dsa_tree_notify(dp->ds->dst, e, v); |
cfbed329 VD |
31 | } |
32 | ||
9264e4ad VO |
33 | static void dsa_port_notify_bridge_fdb_flush(const struct dsa_port *dp) |
34 | { | |
35 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); | |
36 | struct switchdev_notifier_fdb_info info = { | |
37 | /* flush all VLANs */ | |
38 | .vid = 0, | |
39 | }; | |
40 | ||
41 | /* When the port becomes standalone it has already left the bridge. | |
42 | * Don't notify the bridge in that case. | |
43 | */ | |
44 | if (!brport_dev) | |
45 | return; | |
46 | ||
47 | call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE, | |
48 | brport_dev, &info.info, NULL); | |
49 | } | |
50 | ||
045c45d1 VO |
51 | static void dsa_port_fast_age(const struct dsa_port *dp) |
52 | { | |
53 | struct dsa_switch *ds = dp->ds; | |
54 | ||
55 | if (!ds->ops->port_fast_age) | |
56 | return; | |
57 | ||
58 | ds->ops->port_fast_age(ds, dp->index); | |
9264e4ad VO |
59 | |
60 | dsa_port_notify_bridge_fdb_flush(dp); | |
045c45d1 VO |
61 | } |
62 | ||
a4ffe09f VO |
63 | static bool dsa_port_can_configure_learning(struct dsa_port *dp) |
64 | { | |
65 | struct switchdev_brport_flags flags = { | |
66 | .mask = BR_LEARNING, | |
67 | }; | |
68 | struct dsa_switch *ds = dp->ds; | |
69 | int err; | |
70 | ||
71 | if (!ds->ops->port_bridge_flags || !ds->ops->port_pre_bridge_flags) | |
72 | return false; | |
73 | ||
74 | err = ds->ops->port_pre_bridge_flags(ds, dp->index, flags, NULL); | |
75 | return !err; | |
76 | } | |
77 | ||
39f32101 | 78 | int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age) |
a40c175b VD |
79 | { |
80 | struct dsa_switch *ds = dp->ds; | |
81 | int port = dp->index; | |
82 | ||
bae33f2b VO |
83 | if (!ds->ops->port_stp_state_set) |
84 | return -EOPNOTSUPP; | |
a40c175b | 85 | |
bae33f2b | 86 | ds->ops->port_stp_state_set(ds, port, state); |
a40c175b | 87 | |
a4ffe09f VO |
88 | if (!dsa_port_can_configure_learning(dp) || |
89 | (do_fast_age && dp->learning)) { | |
a40c175b VD |
90 | /* Fast age FDB entries or flush appropriate forwarding database |
91 | * for the given port, if we are moving it from Learning or | |
92 | * Forwarding state, to Disabled or Blocking or Listening state. | |
39f32101 VO |
93 | * Ports that were standalone before the STP state change don't |
94 | * need to fast age the FDB, since address learning is off in | |
95 | * standalone mode. | |
a40c175b VD |
96 | */ |
97 | ||
98 | if ((dp->stp_state == BR_STATE_LEARNING || | |
99 | dp->stp_state == BR_STATE_FORWARDING) && | |
100 | (state == BR_STATE_DISABLED || | |
101 | state == BR_STATE_BLOCKING || | |
102 | state == BR_STATE_LISTENING)) | |
045c45d1 | 103 | dsa_port_fast_age(dp); |
a40c175b VD |
104 | } |
105 | ||
106 | dp->stp_state = state; | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
39f32101 VO |
111 | static void dsa_port_set_state_now(struct dsa_port *dp, u8 state, |
112 | bool do_fast_age) | |
a40c175b VD |
113 | { |
114 | int err; | |
115 | ||
39f32101 | 116 | err = dsa_port_set_state(dp, state, do_fast_age); |
a40c175b VD |
117 | if (err) |
118 | pr_err("DSA: failed to set STP state %u (%d)\n", state, err); | |
119 | } | |
cfbed329 | 120 | |
8640f8dc | 121 | int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) |
fb8a6a2b | 122 | { |
fb8a6a2b VD |
123 | struct dsa_switch *ds = dp->ds; |
124 | int port = dp->index; | |
125 | int err; | |
126 | ||
127 | if (ds->ops->port_enable) { | |
128 | err = ds->ops->port_enable(ds, port, phy); | |
129 | if (err) | |
130 | return err; | |
131 | } | |
132 | ||
d3eed0e5 | 133 | if (!dp->bridge) |
39f32101 | 134 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING, false); |
fb8a6a2b | 135 | |
8640f8dc RK |
136 | if (dp->pl) |
137 | phylink_start(dp->pl); | |
138 | ||
fb8a6a2b VD |
139 | return 0; |
140 | } | |
141 | ||
8640f8dc RK |
142 | int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy) |
143 | { | |
144 | int err; | |
145 | ||
146 | rtnl_lock(); | |
147 | err = dsa_port_enable_rt(dp, phy); | |
148 | rtnl_unlock(); | |
149 | ||
150 | return err; | |
151 | } | |
152 | ||
153 | void dsa_port_disable_rt(struct dsa_port *dp) | |
fb8a6a2b VD |
154 | { |
155 | struct dsa_switch *ds = dp->ds; | |
156 | int port = dp->index; | |
157 | ||
8640f8dc RK |
158 | if (dp->pl) |
159 | phylink_stop(dp->pl); | |
160 | ||
d3eed0e5 | 161 | if (!dp->bridge) |
39f32101 | 162 | dsa_port_set_state_now(dp, BR_STATE_DISABLED, false); |
fb8a6a2b VD |
163 | |
164 | if (ds->ops->port_disable) | |
75104db0 | 165 | ds->ops->port_disable(ds, port); |
fb8a6a2b VD |
166 | } |
167 | ||
8640f8dc RK |
168 | void dsa_port_disable(struct dsa_port *dp) |
169 | { | |
170 | rtnl_lock(); | |
171 | dsa_port_disable_rt(dp); | |
172 | rtnl_unlock(); | |
173 | } | |
174 | ||
5961d6a1 VO |
175 | static int dsa_port_inherit_brport_flags(struct dsa_port *dp, |
176 | struct netlink_ext_ack *extack) | |
5e38c158 | 177 | { |
5961d6a1 VO |
178 | const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | |
179 | BR_BCAST_FLOOD; | |
180 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); | |
181 | int flag, err; | |
5e38c158 | 182 | |
5961d6a1 VO |
183 | for_each_set_bit(flag, &mask, 32) { |
184 | struct switchdev_brport_flags flags = {0}; | |
5e38c158 | 185 | |
5961d6a1 | 186 | flags.mask = BIT(flag); |
e18f4c18 | 187 | |
5961d6a1 VO |
188 | if (br_port_flag_is_set(brport_dev, BIT(flag))) |
189 | flags.val = BIT(flag); | |
5e38c158 | 190 | |
5961d6a1 VO |
191 | err = dsa_port_bridge_flags(dp, flags, extack); |
192 | if (err && err != -EOPNOTSUPP) | |
193 | return err; | |
194 | } | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | static void dsa_port_clear_brport_flags(struct dsa_port *dp) | |
200 | { | |
201 | const unsigned long val = BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD; | |
202 | const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | | |
203 | BR_BCAST_FLOOD; | |
204 | int flag, err; | |
205 | ||
206 | for_each_set_bit(flag, &mask, 32) { | |
207 | struct switchdev_brport_flags flags = {0}; | |
208 | ||
209 | flags.mask = BIT(flag); | |
210 | flags.val = val & BIT(flag); | |
211 | ||
212 | err = dsa_port_bridge_flags(dp, flags, NULL); | |
213 | if (err && err != -EOPNOTSUPP) | |
214 | dev_err(dp->ds->dev, | |
215 | "failed to clear bridge port flag %lu: %pe\n", | |
216 | flags.val, ERR_PTR(err)); | |
5e38c158 VO |
217 | } |
218 | } | |
219 | ||
4e51bf44 VO |
220 | static int dsa_port_switchdev_sync_attrs(struct dsa_port *dp, |
221 | struct netlink_ext_ack *extack) | |
5961d6a1 | 222 | { |
010e269f | 223 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); |
36cbf39b | 224 | struct net_device *br = dsa_port_bridge_dev_get(dp); |
5961d6a1 VO |
225 | int err; |
226 | ||
227 | err = dsa_port_inherit_brport_flags(dp, extack); | |
228 | if (err) | |
229 | return err; | |
230 | ||
39f32101 | 231 | err = dsa_port_set_state(dp, br_port_get_stp_state(brport_dev), false); |
010e269f VO |
232 | if (err && err != -EOPNOTSUPP) |
233 | return err; | |
234 | ||
235 | err = dsa_port_vlan_filtering(dp, br_vlan_enabled(br), extack); | |
236 | if (err && err != -EOPNOTSUPP) | |
237 | return err; | |
238 | ||
010e269f VO |
239 | err = dsa_port_ageing_time(dp, br_get_ageing_time(br)); |
240 | if (err && err != -EOPNOTSUPP) | |
241 | return err; | |
242 | ||
74918945 VO |
243 | return 0; |
244 | } | |
245 | ||
246 | static void dsa_port_switchdev_unsync_attrs(struct dsa_port *dp) | |
5961d6a1 VO |
247 | { |
248 | /* Configure the port for standalone mode (no address learning, | |
249 | * flood everything). | |
250 | * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events | |
251 | * when the user requests it through netlink or sysfs, but not | |
252 | * automatically at port join or leave, so we need to handle resetting | |
253 | * the brport flags ourselves. But we even prefer it that way, because | |
254 | * otherwise, some setups might never get the notification they need, | |
255 | * for example, when a port leaves a LAG that offloads the bridge, | |
256 | * it becomes standalone, but as far as the bridge is concerned, no | |
257 | * port ever left. | |
258 | */ | |
259 | dsa_port_clear_brport_flags(dp); | |
260 | ||
261 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, | |
262 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
263 | */ | |
39f32101 | 264 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING, true); |
010e269f VO |
265 | |
266 | /* VLAN filtering is handled by dsa_switch_bridge_leave */ | |
267 | ||
010e269f VO |
268 | /* Ageing time may be global to the switch chip, so don't change it |
269 | * here because we have no good reason (or value) to change it to. | |
270 | */ | |
5961d6a1 VO |
271 | } |
272 | ||
947c8746 VO |
273 | static int dsa_port_bridge_create(struct dsa_port *dp, |
274 | struct net_device *br, | |
275 | struct netlink_ext_ack *extack) | |
276 | { | |
277 | struct dsa_switch *ds = dp->ds; | |
d3eed0e5 | 278 | struct dsa_bridge *bridge; |
947c8746 | 279 | |
d3eed0e5 VO |
280 | bridge = dsa_tree_bridge_find(ds->dst, br); |
281 | if (bridge) { | |
282 | refcount_inc(&bridge->refcount); | |
283 | dp->bridge = bridge; | |
947c8746 | 284 | return 0; |
d3eed0e5 VO |
285 | } |
286 | ||
287 | bridge = kzalloc(sizeof(*bridge), GFP_KERNEL); | |
288 | if (!bridge) | |
289 | return -ENOMEM; | |
290 | ||
291 | refcount_set(&bridge->refcount, 1); | |
292 | ||
293 | bridge->dev = br; | |
947c8746 | 294 | |
d3eed0e5 VO |
295 | bridge->num = dsa_bridge_num_get(br, ds->max_num_bridges); |
296 | if (ds->max_num_bridges && !bridge->num) { | |
947c8746 VO |
297 | NL_SET_ERR_MSG_MOD(extack, |
298 | "Range of offloadable bridges exceeded"); | |
d3eed0e5 | 299 | kfree(bridge); |
947c8746 | 300 | return -EOPNOTSUPP; |
123abc06 VO |
301 | } |
302 | ||
d3eed0e5 | 303 | dp->bridge = bridge; |
947c8746 VO |
304 | |
305 | return 0; | |
306 | } | |
307 | ||
308 | static void dsa_port_bridge_destroy(struct dsa_port *dp, | |
309 | const struct net_device *br) | |
310 | { | |
d3eed0e5 VO |
311 | struct dsa_bridge *bridge = dp->bridge; |
312 | ||
313 | dp->bridge = NULL; | |
947c8746 | 314 | |
d3eed0e5 VO |
315 | if (!refcount_dec_and_test(&bridge->refcount)) |
316 | return; | |
947c8746 | 317 | |
d3eed0e5 VO |
318 | if (bridge->num) |
319 | dsa_bridge_num_put(br, bridge->num); | |
947c8746 | 320 | |
d3eed0e5 | 321 | kfree(bridge); |
123abc06 VO |
322 | } |
323 | ||
2afc526a VO |
324 | int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br, |
325 | struct netlink_ext_ack *extack) | |
cfbed329 VD |
326 | { |
327 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 328 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
329 | .sw_index = dp->ds->index, |
330 | .port = dp->index, | |
cfbed329 | 331 | }; |
2f5dc00f VO |
332 | struct net_device *dev = dp->slave; |
333 | struct net_device *brport_dev; | |
cfbed329 VD |
334 | int err; |
335 | ||
c1388063 RK |
336 | /* Here the interface is already bridged. Reflect the current |
337 | * configuration so that drivers can program their chips accordingly. | |
cfbed329 | 338 | */ |
947c8746 VO |
339 | err = dsa_port_bridge_create(dp, br, extack); |
340 | if (err) | |
341 | return err; | |
cfbed329 | 342 | |
2f5dc00f VO |
343 | brport_dev = dsa_port_to_bridge_port(dp); |
344 | ||
d3eed0e5 | 345 | info.bridge = *dp->bridge; |
f66a6a69 | 346 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info); |
5961d6a1 VO |
347 | if (err) |
348 | goto out_rollback; | |
cfbed329 | 349 | |
857fdd74 VO |
350 | /* Drivers which support bridge TX forwarding should set this */ |
351 | dp->bridge->tx_fwd_offload = info.tx_fwd_offload; | |
123abc06 | 352 | |
4e51bf44 VO |
353 | err = switchdev_bridge_port_offload(brport_dev, dev, dp, |
354 | &dsa_slave_switchdev_notifier, | |
355 | &dsa_slave_switchdev_blocking_notifier, | |
857fdd74 | 356 | dp->bridge->tx_fwd_offload, extack); |
5961d6a1 VO |
357 | if (err) |
358 | goto out_rollback_unbridge; | |
359 | ||
4e51bf44 | 360 | err = dsa_port_switchdev_sync_attrs(dp, extack); |
2f5dc00f VO |
361 | if (err) |
362 | goto out_rollback_unoffload; | |
363 | ||
5961d6a1 | 364 | return 0; |
cfbed329 | 365 | |
2f5dc00f | 366 | out_rollback_unoffload: |
4e51bf44 VO |
367 | switchdev_bridge_port_unoffload(brport_dev, dp, |
368 | &dsa_slave_switchdev_notifier, | |
369 | &dsa_slave_switchdev_blocking_notifier); | |
5961d6a1 VO |
370 | out_rollback_unbridge: |
371 | dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); | |
372 | out_rollback: | |
947c8746 | 373 | dsa_port_bridge_destroy(dp, br); |
cfbed329 VD |
374 | return err; |
375 | } | |
376 | ||
4e51bf44 | 377 | void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br) |
74918945 | 378 | { |
2f5dc00f VO |
379 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); |
380 | ||
09dba21b VO |
381 | /* Don't try to unoffload something that is not offloaded */ |
382 | if (!brport_dev) | |
383 | return; | |
384 | ||
4e51bf44 VO |
385 | switchdev_bridge_port_unoffload(brport_dev, dp, |
386 | &dsa_slave_switchdev_notifier, | |
387 | &dsa_slave_switchdev_blocking_notifier); | |
d7d0d423 VO |
388 | |
389 | dsa_flush_workqueue(); | |
74918945 VO |
390 | } |
391 | ||
cfbed329 VD |
392 | void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) |
393 | { | |
394 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 395 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
396 | .sw_index = dp->ds->index, |
397 | .port = dp->index, | |
d3eed0e5 | 398 | .bridge = *dp->bridge, |
cfbed329 VD |
399 | }; |
400 | int err; | |
401 | ||
402 | /* Here the port is already unbridged. Reflect the current configuration | |
403 | * so that drivers can program their chips accordingly. | |
404 | */ | |
947c8746 | 405 | dsa_port_bridge_destroy(dp, br); |
cfbed329 | 406 | |
f66a6a69 | 407 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); |
cfbed329 | 408 | if (err) |
ab97462b VO |
409 | dev_err(dp->ds->dev, |
410 | "port %d failed to notify DSA_NOTIFIER_BRIDGE_LEAVE: %pe\n", | |
411 | dp->index, ERR_PTR(err)); | |
cfbed329 | 412 | |
74918945 | 413 | dsa_port_switchdev_unsync_attrs(dp); |
cfbed329 | 414 | } |
4d61d304 | 415 | |
058102a6 TW |
416 | int dsa_port_lag_change(struct dsa_port *dp, |
417 | struct netdev_lag_lower_state_info *linfo) | |
418 | { | |
419 | struct dsa_notifier_lag_info info = { | |
420 | .sw_index = dp->ds->index, | |
421 | .port = dp->index, | |
422 | }; | |
423 | bool tx_enabled; | |
424 | ||
425 | if (!dp->lag_dev) | |
426 | return 0; | |
427 | ||
428 | /* On statically configured aggregates (e.g. loadbalance | |
429 | * without LACP) ports will always be tx_enabled, even if the | |
430 | * link is down. Thus we require both link_up and tx_enabled | |
431 | * in order to include it in the tx set. | |
432 | */ | |
433 | tx_enabled = linfo->link_up && linfo->tx_enabled; | |
434 | ||
435 | if (tx_enabled == dp->lag_tx_enabled) | |
436 | return 0; | |
437 | ||
438 | dp->lag_tx_enabled = tx_enabled; | |
439 | ||
440 | return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info); | |
441 | } | |
442 | ||
443 | int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag, | |
2afc526a VO |
444 | struct netdev_lag_upper_info *uinfo, |
445 | struct netlink_ext_ack *extack) | |
058102a6 TW |
446 | { |
447 | struct dsa_notifier_lag_info info = { | |
448 | .sw_index = dp->ds->index, | |
449 | .port = dp->index, | |
450 | .lag = lag, | |
451 | .info = uinfo, | |
452 | }; | |
185c9a76 | 453 | struct net_device *bridge_dev; |
058102a6 TW |
454 | int err; |
455 | ||
456 | dsa_lag_map(dp->ds->dst, lag); | |
457 | dp->lag_dev = lag; | |
458 | ||
459 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info); | |
185c9a76 VO |
460 | if (err) |
461 | goto err_lag_join; | |
058102a6 | 462 | |
185c9a76 VO |
463 | bridge_dev = netdev_master_upper_dev_get(lag); |
464 | if (!bridge_dev || !netif_is_bridge_master(bridge_dev)) | |
465 | return 0; | |
466 | ||
2afc526a | 467 | err = dsa_port_bridge_join(dp, bridge_dev, extack); |
185c9a76 VO |
468 | if (err) |
469 | goto err_bridge_join; | |
470 | ||
471 | return 0; | |
472 | ||
473 | err_bridge_join: | |
474 | dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); | |
475 | err_lag_join: | |
476 | dp->lag_dev = NULL; | |
477 | dsa_lag_unmap(dp->ds->dst, lag); | |
058102a6 TW |
478 | return err; |
479 | } | |
480 | ||
4e51bf44 | 481 | void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag) |
74918945 | 482 | { |
36cbf39b VO |
483 | struct net_device *br = dsa_port_bridge_dev_get(dp); |
484 | ||
485 | if (br) | |
486 | dsa_port_pre_bridge_leave(dp, br); | |
74918945 VO |
487 | } |
488 | ||
058102a6 TW |
489 | void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag) |
490 | { | |
36cbf39b | 491 | struct net_device *br = dsa_port_bridge_dev_get(dp); |
058102a6 TW |
492 | struct dsa_notifier_lag_info info = { |
493 | .sw_index = dp->ds->index, | |
494 | .port = dp->index, | |
495 | .lag = lag, | |
496 | }; | |
497 | int err; | |
498 | ||
499 | if (!dp->lag_dev) | |
500 | return; | |
501 | ||
502 | /* Port might have been part of a LAG that in turn was | |
503 | * attached to a bridge. | |
504 | */ | |
36cbf39b VO |
505 | if (br) |
506 | dsa_port_bridge_leave(dp, br); | |
058102a6 TW |
507 | |
508 | dp->lag_tx_enabled = false; | |
509 | dp->lag_dev = NULL; | |
510 | ||
511 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); | |
512 | if (err) | |
ab97462b VO |
513 | dev_err(dp->ds->dev, |
514 | "port %d failed to notify DSA_NOTIFIER_LAG_LEAVE: %pe\n", | |
515 | dp->index, ERR_PTR(err)); | |
058102a6 TW |
516 | |
517 | dsa_lag_unmap(dp->ds->dst, lag); | |
518 | } | |
519 | ||
adb256eb | 520 | /* Must be called under rcu_read_lock() */ |
8f5d16f6 | 521 | static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, |
89153ed6 VO |
522 | bool vlan_filtering, |
523 | struct netlink_ext_ack *extack) | |
8f5d16f6 VO |
524 | { |
525 | struct dsa_switch *ds = dp->ds; | |
d0004a02 VO |
526 | struct dsa_port *other_dp; |
527 | int err; | |
adb256eb VO |
528 | |
529 | /* VLAN awareness was off, so the question is "can we turn it on". | |
530 | * We may have had 8021q uppers, those need to go. Make sure we don't | |
531 | * enter an inconsistent state: deny changing the VLAN awareness state | |
532 | * as long as we have 8021q uppers. | |
533 | */ | |
57d77986 | 534 | if (vlan_filtering && dsa_port_is_user(dp)) { |
36cbf39b | 535 | struct net_device *br = dsa_port_bridge_dev_get(dp); |
adb256eb | 536 | struct net_device *upper_dev, *slave = dp->slave; |
adb256eb VO |
537 | struct list_head *iter; |
538 | ||
539 | netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) { | |
540 | struct bridge_vlan_info br_info; | |
541 | u16 vid; | |
542 | ||
543 | if (!is_vlan_dev(upper_dev)) | |
544 | continue; | |
545 | ||
546 | vid = vlan_dev_vlan_id(upper_dev); | |
547 | ||
548 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the | |
549 | * device, respectively the VID is not found, returning | |
550 | * 0 means success, which is a failure for us here. | |
551 | */ | |
552 | err = br_vlan_get_info(br, vid, &br_info); | |
553 | if (err == 0) { | |
89153ed6 VO |
554 | NL_SET_ERR_MSG_MOD(extack, |
555 | "Must first remove VLAN uppers having VIDs also present in bridge"); | |
adb256eb VO |
556 | return false; |
557 | } | |
558 | } | |
559 | } | |
8f5d16f6 VO |
560 | |
561 | if (!ds->vlan_filtering_is_global) | |
562 | return true; | |
563 | ||
564 | /* For cases where enabling/disabling VLAN awareness is global to the | |
565 | * switch, we need to handle the case where multiple bridges span | |
566 | * different ports of the same switch device and one of them has a | |
567 | * different setting than what is being requested. | |
568 | */ | |
d0004a02 | 569 | dsa_switch_for_each_port(other_dp, ds) { |
36cbf39b | 570 | struct net_device *other_br = dsa_port_bridge_dev_get(other_dp); |
8f5d16f6 | 571 | |
8f5d16f6 VO |
572 | /* If it's the same bridge, it also has same |
573 | * vlan_filtering setting => no need to check | |
574 | */ | |
36cbf39b | 575 | if (!other_br || other_br == dsa_port_bridge_dev_get(dp)) |
8f5d16f6 | 576 | continue; |
36cbf39b VO |
577 | |
578 | if (br_vlan_enabled(other_br) != vlan_filtering) { | |
89153ed6 VO |
579 | NL_SET_ERR_MSG_MOD(extack, |
580 | "VLAN filtering is a global setting"); | |
8f5d16f6 VO |
581 | return false; |
582 | } | |
583 | } | |
584 | return true; | |
585 | } | |
586 | ||
89153ed6 VO |
587 | int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering, |
588 | struct netlink_ext_ack *extack) | |
4d61d304 | 589 | { |
06cfb2df | 590 | bool old_vlan_filtering = dsa_port_is_vlan_filtering(dp); |
4d61d304 | 591 | struct dsa_switch *ds = dp->ds; |
bae33f2b | 592 | bool apply; |
33162e9a | 593 | int err; |
4d61d304 | 594 | |
bae33f2b VO |
595 | if (!ds->ops->port_vlan_filtering) |
596 | return -EOPNOTSUPP; | |
adb256eb | 597 | |
bae33f2b VO |
598 | /* We are called from dsa_slave_switchdev_blocking_event(), |
599 | * which is not under rcu_read_lock(), unlike | |
600 | * dsa_slave_switchdev_event(). | |
601 | */ | |
602 | rcu_read_lock(); | |
89153ed6 | 603 | apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack); |
bae33f2b VO |
604 | rcu_read_unlock(); |
605 | if (!apply) | |
606 | return -EINVAL; | |
8f5d16f6 | 607 | |
ec9121e7 VO |
608 | if (dsa_port_is_vlan_filtering(dp) == vlan_filtering) |
609 | return 0; | |
610 | ||
89153ed6 VO |
611 | err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering, |
612 | extack); | |
8f5d16f6 VO |
613 | if (err) |
614 | return err; | |
615 | ||
06cfb2df | 616 | if (ds->vlan_filtering_is_global) { |
d0004a02 | 617 | struct dsa_port *other_dp; |
06cfb2df | 618 | |
bae33f2b | 619 | ds->vlan_filtering = vlan_filtering; |
06cfb2df | 620 | |
d0004a02 VO |
621 | dsa_switch_for_each_user_port(other_dp, ds) { |
622 | struct net_device *slave = dp->slave; | |
06cfb2df VO |
623 | |
624 | /* We might be called in the unbind path, so not | |
625 | * all slave devices might still be registered. | |
626 | */ | |
06cfb2df VO |
627 | if (!slave) |
628 | continue; | |
629 | ||
630 | err = dsa_slave_manage_vlan_filtering(slave, | |
631 | vlan_filtering); | |
632 | if (err) | |
633 | goto restore; | |
634 | } | |
635 | } else { | |
bae33f2b | 636 | dp->vlan_filtering = vlan_filtering; |
2e554a7a | 637 | |
06cfb2df VO |
638 | err = dsa_slave_manage_vlan_filtering(dp->slave, |
639 | vlan_filtering); | |
640 | if (err) | |
641 | goto restore; | |
642 | } | |
643 | ||
4d61d304 | 644 | return 0; |
06cfb2df VO |
645 | |
646 | restore: | |
647 | ds->ops->port_vlan_filtering(ds, dp->index, old_vlan_filtering, NULL); | |
648 | ||
649 | if (ds->vlan_filtering_is_global) | |
650 | ds->vlan_filtering = old_vlan_filtering; | |
651 | else | |
652 | dp->vlan_filtering = old_vlan_filtering; | |
653 | ||
654 | return err; | |
4d61d304 | 655 | } |
d87bd94e | 656 | |
54a0ed0d RK |
657 | /* This enforces legacy behavior for switch drivers which assume they can't |
658 | * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0 | |
659 | */ | |
660 | bool dsa_port_skip_vlan_configuration(struct dsa_port *dp) | |
661 | { | |
36cbf39b | 662 | struct net_device *br = dsa_port_bridge_dev_get(dp); |
54a0ed0d RK |
663 | struct dsa_switch *ds = dp->ds; |
664 | ||
36cbf39b | 665 | if (!br) |
54a0ed0d RK |
666 | return false; |
667 | ||
36cbf39b | 668 | return !ds->configure_vlan_while_not_filtering && !br_vlan_enabled(br); |
54a0ed0d RK |
669 | } |
670 | ||
bae33f2b | 671 | int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) |
d87bd94e VD |
672 | { |
673 | unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock); | |
674 | unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); | |
bae33f2b | 675 | struct dsa_notifier_ageing_time_info info; |
bae33f2b VO |
676 | int err; |
677 | ||
678 | info.ageing_time = ageing_time; | |
d87bd94e | 679 | |
bae33f2b VO |
680 | err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
681 | if (err) | |
682 | return err; | |
d87bd94e | 683 | |
d87bd94e | 684 | dp->ageing_time = ageing_time; |
d87bd94e | 685 | |
77b61365 | 686 | return 0; |
d87bd94e | 687 | } |
d1cffff0 | 688 | |
e18f4c18 | 689 | int dsa_port_pre_bridge_flags(const struct dsa_port *dp, |
a8b659e7 VO |
690 | struct switchdev_brport_flags flags, |
691 | struct netlink_ext_ack *extack) | |
ea87005a FF |
692 | { |
693 | struct dsa_switch *ds = dp->ds; | |
694 | ||
a8b659e7 | 695 | if (!ds->ops->port_pre_bridge_flags) |
ea87005a FF |
696 | return -EINVAL; |
697 | ||
a8b659e7 | 698 | return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack); |
ea87005a FF |
699 | } |
700 | ||
045c45d1 | 701 | int dsa_port_bridge_flags(struct dsa_port *dp, |
a8b659e7 VO |
702 | struct switchdev_brport_flags flags, |
703 | struct netlink_ext_ack *extack) | |
57652796 RK |
704 | { |
705 | struct dsa_switch *ds = dp->ds; | |
045c45d1 | 706 | int err; |
57652796 | 707 | |
a8b659e7 | 708 | if (!ds->ops->port_bridge_flags) |
70a7c484 | 709 | return -EOPNOTSUPP; |
57652796 | 710 | |
045c45d1 VO |
711 | err = ds->ops->port_bridge_flags(ds, dp->index, flags, extack); |
712 | if (err) | |
713 | return err; | |
714 | ||
715 | if (flags.mask & BR_LEARNING) { | |
716 | bool learning = flags.val & BR_LEARNING; | |
717 | ||
718 | if (learning == dp->learning) | |
719 | return 0; | |
720 | ||
bee7c577 VO |
721 | if ((dp->learning && !learning) && |
722 | (dp->stp_state == BR_STATE_LEARNING || | |
723 | dp->stp_state == BR_STATE_FORWARDING)) | |
045c45d1 VO |
724 | dsa_port_fast_age(dp); |
725 | ||
726 | dp->learning = learning; | |
727 | } | |
728 | ||
729 | return 0; | |
57652796 RK |
730 | } |
731 | ||
bfcb8132 | 732 | int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu, |
88faba20 | 733 | bool targeted_match) |
bfcb8132 VO |
734 | { |
735 | struct dsa_notifier_mtu_info info = { | |
736 | .sw_index = dp->ds->index, | |
88faba20 | 737 | .targeted_match = targeted_match, |
bfcb8132 VO |
738 | .port = dp->index, |
739 | .mtu = new_mtu, | |
740 | }; | |
741 | ||
742 | return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info); | |
743 | } | |
744 | ||
2acf4e6a AS |
745 | int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
746 | u16 vid) | |
d1cffff0 | 747 | { |
685fb6a4 VD |
748 | struct dsa_notifier_fdb_info info = { |
749 | .sw_index = dp->ds->index, | |
750 | .port = dp->index, | |
2acf4e6a AS |
751 | .addr = addr, |
752 | .vid = vid, | |
685fb6a4 | 753 | }; |
d1cffff0 | 754 | |
685fb6a4 | 755 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info); |
d1cffff0 VD |
756 | } |
757 | ||
2acf4e6a AS |
758 | int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, |
759 | u16 vid) | |
d1cffff0 | 760 | { |
685fb6a4 VD |
761 | struct dsa_notifier_fdb_info info = { |
762 | .sw_index = dp->ds->index, | |
763 | .port = dp->index, | |
2acf4e6a AS |
764 | .addr = addr, |
765 | .vid = vid, | |
766 | ||
685fb6a4 | 767 | }; |
d1cffff0 | 768 | |
685fb6a4 | 769 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info); |
d1cffff0 VD |
770 | } |
771 | ||
3dc80afc VO |
772 | int dsa_port_host_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
773 | u16 vid) | |
774 | { | |
775 | struct dsa_notifier_fdb_info info = { | |
776 | .sw_index = dp->ds->index, | |
777 | .port = dp->index, | |
778 | .addr = addr, | |
779 | .vid = vid, | |
780 | }; | |
26ee7b06 VO |
781 | struct dsa_port *cpu_dp = dp->cpu_dp; |
782 | int err; | |
783 | ||
784 | err = dev_uc_add(cpu_dp->master, addr); | |
785 | if (err) | |
786 | return err; | |
3dc80afc VO |
787 | |
788 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_ADD, &info); | |
789 | } | |
790 | ||
791 | int dsa_port_host_fdb_del(struct dsa_port *dp, const unsigned char *addr, | |
792 | u16 vid) | |
793 | { | |
794 | struct dsa_notifier_fdb_info info = { | |
795 | .sw_index = dp->ds->index, | |
796 | .port = dp->index, | |
797 | .addr = addr, | |
798 | .vid = vid, | |
799 | }; | |
26ee7b06 VO |
800 | struct dsa_port *cpu_dp = dp->cpu_dp; |
801 | int err; | |
802 | ||
803 | err = dev_uc_del(cpu_dp->master, addr); | |
804 | if (err) | |
805 | return err; | |
3dc80afc VO |
806 | |
807 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_DEL, &info); | |
808 | } | |
809 | ||
de40fc5d VD |
810 | int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data) |
811 | { | |
812 | struct dsa_switch *ds = dp->ds; | |
813 | int port = dp->index; | |
814 | ||
815 | if (!ds->ops->port_fdb_dump) | |
816 | return -EOPNOTSUPP; | |
817 | ||
818 | return ds->ops->port_fdb_dump(ds, port, cb, data); | |
819 | } | |
820 | ||
bb9f6031 | 821 | int dsa_port_mdb_add(const struct dsa_port *dp, |
ffb68fc5 | 822 | const struct switchdev_obj_port_mdb *mdb) |
3a9afea3 | 823 | { |
8ae5bcdc VD |
824 | struct dsa_notifier_mdb_info info = { |
825 | .sw_index = dp->ds->index, | |
826 | .port = dp->index, | |
8ae5bcdc VD |
827 | .mdb = mdb, |
828 | }; | |
3a9afea3 | 829 | |
8ae5bcdc | 830 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info); |
3a9afea3 VD |
831 | } |
832 | ||
bb9f6031 | 833 | int dsa_port_mdb_del(const struct dsa_port *dp, |
3a9afea3 VD |
834 | const struct switchdev_obj_port_mdb *mdb) |
835 | { | |
8ae5bcdc VD |
836 | struct dsa_notifier_mdb_info info = { |
837 | .sw_index = dp->ds->index, | |
838 | .port = dp->index, | |
839 | .mdb = mdb, | |
840 | }; | |
3a9afea3 | 841 | |
8ae5bcdc | 842 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info); |
3a9afea3 VD |
843 | } |
844 | ||
b8e997c4 VO |
845 | int dsa_port_host_mdb_add(const struct dsa_port *dp, |
846 | const struct switchdev_obj_port_mdb *mdb) | |
847 | { | |
848 | struct dsa_notifier_mdb_info info = { | |
849 | .sw_index = dp->ds->index, | |
850 | .port = dp->index, | |
851 | .mdb = mdb, | |
852 | }; | |
26ee7b06 VO |
853 | struct dsa_port *cpu_dp = dp->cpu_dp; |
854 | int err; | |
855 | ||
856 | err = dev_mc_add(cpu_dp->master, mdb->addr); | |
857 | if (err) | |
858 | return err; | |
b8e997c4 VO |
859 | |
860 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_ADD, &info); | |
861 | } | |
862 | ||
863 | int dsa_port_host_mdb_del(const struct dsa_port *dp, | |
864 | const struct switchdev_obj_port_mdb *mdb) | |
865 | { | |
866 | struct dsa_notifier_mdb_info info = { | |
867 | .sw_index = dp->ds->index, | |
868 | .port = dp->index, | |
869 | .mdb = mdb, | |
870 | }; | |
26ee7b06 VO |
871 | struct dsa_port *cpu_dp = dp->cpu_dp; |
872 | int err; | |
873 | ||
874 | err = dev_mc_del(cpu_dp->master, mdb->addr); | |
875 | if (err) | |
876 | return err; | |
b8e997c4 VO |
877 | |
878 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_DEL, &info); | |
879 | } | |
880 | ||
076e7133 | 881 | int dsa_port_vlan_add(struct dsa_port *dp, |
31046a5f VO |
882 | const struct switchdev_obj_port_vlan *vlan, |
883 | struct netlink_ext_ack *extack) | |
076e7133 | 884 | { |
d0c627b8 VD |
885 | struct dsa_notifier_vlan_info info = { |
886 | .sw_index = dp->ds->index, | |
887 | .port = dp->index, | |
d0c627b8 | 888 | .vlan = vlan, |
31046a5f | 889 | .extack = extack, |
d0c627b8 | 890 | }; |
076e7133 | 891 | |
c5335d73 | 892 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info); |
076e7133 VD |
893 | } |
894 | ||
895 | int dsa_port_vlan_del(struct dsa_port *dp, | |
896 | const struct switchdev_obj_port_vlan *vlan) | |
897 | { | |
d0c627b8 VD |
898 | struct dsa_notifier_vlan_info info = { |
899 | .sw_index = dp->ds->index, | |
900 | .port = dp->index, | |
901 | .vlan = vlan, | |
902 | }; | |
076e7133 | 903 | |
c5335d73 | 904 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info); |
076e7133 | 905 | } |
57ab1ca2 | 906 | |
c595c433 HV |
907 | int dsa_port_mrp_add(const struct dsa_port *dp, |
908 | const struct switchdev_obj_mrp *mrp) | |
909 | { | |
cad69019 VO |
910 | struct dsa_switch *ds = dp->ds; |
911 | ||
912 | if (!ds->ops->port_mrp_add) | |
913 | return -EOPNOTSUPP; | |
c595c433 | 914 | |
cad69019 | 915 | return ds->ops->port_mrp_add(ds, dp->index, mrp); |
c595c433 HV |
916 | } |
917 | ||
918 | int dsa_port_mrp_del(const struct dsa_port *dp, | |
919 | const struct switchdev_obj_mrp *mrp) | |
920 | { | |
cad69019 VO |
921 | struct dsa_switch *ds = dp->ds; |
922 | ||
923 | if (!ds->ops->port_mrp_del) | |
924 | return -EOPNOTSUPP; | |
c595c433 | 925 | |
cad69019 | 926 | return ds->ops->port_mrp_del(ds, dp->index, mrp); |
c595c433 HV |
927 | } |
928 | ||
929 | int dsa_port_mrp_add_ring_role(const struct dsa_port *dp, | |
930 | const struct switchdev_obj_ring_role_mrp *mrp) | |
931 | { | |
cad69019 VO |
932 | struct dsa_switch *ds = dp->ds; |
933 | ||
934 | if (!ds->ops->port_mrp_add_ring_role) | |
935 | return -EOPNOTSUPP; | |
c595c433 | 936 | |
cad69019 | 937 | return ds->ops->port_mrp_add_ring_role(ds, dp->index, mrp); |
c595c433 HV |
938 | } |
939 | ||
940 | int dsa_port_mrp_del_ring_role(const struct dsa_port *dp, | |
941 | const struct switchdev_obj_ring_role_mrp *mrp) | |
942 | { | |
cad69019 VO |
943 | struct dsa_switch *ds = dp->ds; |
944 | ||
945 | if (!ds->ops->port_mrp_del_ring_role) | |
946 | return -EOPNOTSUPP; | |
c595c433 | 947 | |
cad69019 | 948 | return ds->ops->port_mrp_del_ring_role(ds, dp->index, mrp); |
c595c433 HV |
949 | } |
950 | ||
53da0eba VO |
951 | void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp, |
952 | const struct dsa_device_ops *tag_ops) | |
953 | { | |
53da0eba VO |
954 | cpu_dp->rcv = tag_ops->rcv; |
955 | cpu_dp->tag_ops = tag_ops; | |
956 | } | |
957 | ||
6207a78c | 958 | static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp) |
33615367 | 959 | { |
33615367 | 960 | struct device_node *phy_dn; |
33615367 | 961 | struct phy_device *phydev; |
33615367 | 962 | |
6207a78c | 963 | phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0); |
33615367 | 964 | if (!phy_dn) |
6207a78c | 965 | return NULL; |
33615367 SR |
966 | |
967 | phydev = of_phy_find_device(phy_dn); | |
968 | if (!phydev) { | |
6207a78c FF |
969 | of_node_put(phy_dn); |
970 | return ERR_PTR(-EPROBE_DEFER); | |
33615367 SR |
971 | } |
972 | ||
9919a363 | 973 | of_node_put(phy_dn); |
6207a78c FF |
974 | return phydev; |
975 | } | |
976 | ||
8ae67496 FF |
977 | static void dsa_port_phylink_validate(struct phylink_config *config, |
978 | unsigned long *supported, | |
979 | struct phylink_link_state *state) | |
77373d49 IC |
980 | { |
981 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
982 | struct dsa_switch *ds = dp->ds; | |
983 | ||
5938bce4 RKO |
984 | if (!ds->ops->phylink_validate) { |
985 | if (config->mac_capabilities) | |
986 | phylink_generic_validate(config, supported, state); | |
77373d49 | 987 | return; |
5938bce4 | 988 | } |
77373d49 IC |
989 | |
990 | ds->ops->phylink_validate(ds, dp->index, supported, state); | |
991 | } | |
77373d49 | 992 | |
8ae67496 FF |
993 | static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config, |
994 | struct phylink_link_state *state) | |
77373d49 IC |
995 | { |
996 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
997 | struct dsa_switch *ds = dp->ds; | |
87615c96 | 998 | int err; |
77373d49 | 999 | |
d46b7e4f RK |
1000 | /* Only called for inband modes */ |
1001 | if (!ds->ops->phylink_mac_link_state) { | |
1002 | state->link = 0; | |
1003 | return; | |
1004 | } | |
77373d49 | 1005 | |
87615c96 RK |
1006 | err = ds->ops->phylink_mac_link_state(ds, dp->index, state); |
1007 | if (err < 0) { | |
1008 | dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n", | |
1009 | dp->index, err); | |
d46b7e4f | 1010 | state->link = 0; |
87615c96 | 1011 | } |
77373d49 | 1012 | } |
77373d49 | 1013 | |
8ae67496 FF |
1014 | static void dsa_port_phylink_mac_config(struct phylink_config *config, |
1015 | unsigned int mode, | |
1016 | const struct phylink_link_state *state) | |
77373d49 IC |
1017 | { |
1018 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
1019 | struct dsa_switch *ds = dp->ds; | |
1020 | ||
1021 | if (!ds->ops->phylink_mac_config) | |
1022 | return; | |
1023 | ||
1024 | ds->ops->phylink_mac_config(ds, dp->index, mode, state); | |
1025 | } | |
77373d49 | 1026 | |
8ae67496 | 1027 | static void dsa_port_phylink_mac_an_restart(struct phylink_config *config) |
77373d49 IC |
1028 | { |
1029 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
1030 | struct dsa_switch *ds = dp->ds; | |
1031 | ||
1032 | if (!ds->ops->phylink_mac_an_restart) | |
1033 | return; | |
1034 | ||
1035 | ds->ops->phylink_mac_an_restart(ds, dp->index); | |
1036 | } | |
77373d49 | 1037 | |
8ae67496 FF |
1038 | static void dsa_port_phylink_mac_link_down(struct phylink_config *config, |
1039 | unsigned int mode, | |
1040 | phy_interface_t interface) | |
77373d49 IC |
1041 | { |
1042 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
0e279218 | 1043 | struct phy_device *phydev = NULL; |
77373d49 IC |
1044 | struct dsa_switch *ds = dp->ds; |
1045 | ||
57d77986 | 1046 | if (dsa_port_is_user(dp)) |
0e279218 IC |
1047 | phydev = dp->slave->phydev; |
1048 | ||
77373d49 | 1049 | if (!ds->ops->phylink_mac_link_down) { |
0e279218 IC |
1050 | if (ds->ops->adjust_link && phydev) |
1051 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
1052 | return; |
1053 | } | |
1054 | ||
1055 | ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); | |
1056 | } | |
77373d49 | 1057 | |
8ae67496 | 1058 | static void dsa_port_phylink_mac_link_up(struct phylink_config *config, |
91a208f2 | 1059 | struct phy_device *phydev, |
8ae67496 FF |
1060 | unsigned int mode, |
1061 | phy_interface_t interface, | |
91a208f2 RK |
1062 | int speed, int duplex, |
1063 | bool tx_pause, bool rx_pause) | |
77373d49 IC |
1064 | { |
1065 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
77373d49 IC |
1066 | struct dsa_switch *ds = dp->ds; |
1067 | ||
1068 | if (!ds->ops->phylink_mac_link_up) { | |
0e279218 IC |
1069 | if (ds->ops->adjust_link && phydev) |
1070 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
1071 | return; |
1072 | } | |
1073 | ||
5b502a7b RK |
1074 | ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev, |
1075 | speed, duplex, tx_pause, rx_pause); | |
77373d49 | 1076 | } |
77373d49 | 1077 | |
21bd64bd | 1078 | static const struct phylink_mac_ops dsa_port_phylink_mac_ops = { |
77373d49 | 1079 | .validate = dsa_port_phylink_validate, |
d46b7e4f | 1080 | .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state, |
77373d49 IC |
1081 | .mac_config = dsa_port_phylink_mac_config, |
1082 | .mac_an_restart = dsa_port_phylink_mac_an_restart, | |
1083 | .mac_link_down = dsa_port_phylink_mac_link_down, | |
1084 | .mac_link_up = dsa_port_phylink_mac_link_up, | |
1085 | }; | |
1086 | ||
21bd64bd RKO |
1087 | int dsa_port_phylink_create(struct dsa_port *dp) |
1088 | { | |
1089 | struct dsa_switch *ds = dp->ds; | |
1090 | phy_interface_t mode; | |
1091 | int err; | |
1092 | ||
1093 | err = of_get_phy_mode(dp->dn, &mode); | |
1094 | if (err) | |
1095 | mode = PHY_INTERFACE_MODE_NA; | |
1096 | ||
0a9f0794 RKO |
1097 | /* Presence of phylink_mac_link_state or phylink_mac_an_restart is |
1098 | * an indicator of a legacy phylink driver. | |
1099 | */ | |
1100 | if (ds->ops->phylink_mac_link_state || | |
1101 | ds->ops->phylink_mac_an_restart) | |
1102 | dp->pl_config.legacy_pre_march2020 = true; | |
1103 | ||
072eea6c RKO |
1104 | if (ds->ops->phylink_get_caps) |
1105 | ds->ops->phylink_get_caps(ds, dp->index, &dp->pl_config); | |
21bd64bd RKO |
1106 | |
1107 | dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(dp->dn), | |
1108 | mode, &dsa_port_phylink_mac_ops); | |
1109 | if (IS_ERR(dp->pl)) { | |
1110 | pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); | |
1111 | return PTR_ERR(dp->pl); | |
1112 | } | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
6207a78c FF |
1117 | static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable) |
1118 | { | |
1119 | struct dsa_switch *ds = dp->ds; | |
1120 | struct phy_device *phydev; | |
1121 | int port = dp->index; | |
1122 | int err = 0; | |
1123 | ||
1124 | phydev = dsa_port_get_phy_device(dp); | |
1125 | if (!phydev) | |
1126 | return 0; | |
1127 | ||
1128 | if (IS_ERR(phydev)) | |
1129 | return PTR_ERR(phydev); | |
1130 | ||
33615367 | 1131 | if (enable) { |
33615367 SR |
1132 | err = genphy_resume(phydev); |
1133 | if (err < 0) | |
1134 | goto err_put_dev; | |
1135 | ||
1136 | err = genphy_read_status(phydev); | |
1137 | if (err < 0) | |
1138 | goto err_put_dev; | |
1139 | } else { | |
1140 | err = genphy_suspend(phydev); | |
1141 | if (err < 0) | |
1142 | goto err_put_dev; | |
1143 | } | |
1144 | ||
1145 | if (ds->ops->adjust_link) | |
1146 | ds->ops->adjust_link(ds, port, phydev); | |
1147 | ||
1148 | dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev)); | |
1149 | ||
1150 | err_put_dev: | |
1151 | put_device(&phydev->mdio.dev); | |
33615367 SR |
1152 | return err; |
1153 | } | |
1154 | ||
1155 | static int dsa_port_fixed_link_register_of(struct dsa_port *dp) | |
57ab1ca2 VD |
1156 | { |
1157 | struct device_node *dn = dp->dn; | |
1158 | struct dsa_switch *ds = dp->ds; | |
1159 | struct phy_device *phydev; | |
1160 | int port = dp->index; | |
0c65b2b9 | 1161 | phy_interface_t mode; |
57ab1ca2 VD |
1162 | int err; |
1163 | ||
33615367 SR |
1164 | err = of_phy_register_fixed_link(dn); |
1165 | if (err) { | |
1166 | dev_err(ds->dev, | |
1167 | "failed to register the fixed PHY of port %d\n", | |
1168 | port); | |
1169 | return err; | |
1170 | } | |
57ab1ca2 | 1171 | |
33615367 | 1172 | phydev = of_phy_find_device(dn); |
57ab1ca2 | 1173 | |
0c65b2b9 AL |
1174 | err = of_get_phy_mode(dn, &mode); |
1175 | if (err) | |
33615367 SR |
1176 | mode = PHY_INTERFACE_MODE_NA; |
1177 | phydev->interface = mode; | |
57ab1ca2 | 1178 | |
33615367 | 1179 | genphy_read_status(phydev); |
57ab1ca2 | 1180 | |
33615367 SR |
1181 | if (ds->ops->adjust_link) |
1182 | ds->ops->adjust_link(ds, port, phydev); | |
57ab1ca2 | 1183 | |
33615367 | 1184 | put_device(&phydev->mdio.dev); |
57ab1ca2 VD |
1185 | |
1186 | return 0; | |
1187 | } | |
1188 | ||
0e279218 IC |
1189 | static int dsa_port_phylink_register(struct dsa_port *dp) |
1190 | { | |
1191 | struct dsa_switch *ds = dp->ds; | |
1192 | struct device_node *port_dn = dp->dn; | |
0c65b2b9 | 1193 | int err; |
0e279218 | 1194 | |
0e279218 IC |
1195 | dp->pl_config.dev = ds->dev; |
1196 | dp->pl_config.type = PHYLINK_DEV; | |
787cac3f | 1197 | dp->pl_config.pcs_poll = ds->pcs_poll; |
0e279218 | 1198 | |
21bd64bd RKO |
1199 | err = dsa_port_phylink_create(dp); |
1200 | if (err) | |
1201 | return err; | |
0e279218 IC |
1202 | |
1203 | err = phylink_of_phy_connect(dp->pl, port_dn, 0); | |
2131fba5 | 1204 | if (err && err != -ENODEV) { |
0e279218 IC |
1205 | pr_err("could not attach to PHY: %d\n", err); |
1206 | goto err_phy_connect; | |
1207 | } | |
1208 | ||
0e279218 IC |
1209 | return 0; |
1210 | ||
1211 | err_phy_connect: | |
1212 | phylink_destroy(dp->pl); | |
1213 | return err; | |
1214 | } | |
1215 | ||
33615367 | 1216 | int dsa_port_link_register_of(struct dsa_port *dp) |
57ab1ca2 | 1217 | { |
0e279218 | 1218 | struct dsa_switch *ds = dp->ds; |
a20f9970 | 1219 | struct device_node *phy_np; |
3be98b2d | 1220 | int port = dp->index; |
0e279218 | 1221 | |
a20f9970 AL |
1222 | if (!ds->ops->adjust_link) { |
1223 | phy_np = of_parse_phandle(dp->dn, "phy-handle", 0); | |
3be98b2d AL |
1224 | if (of_phy_is_fixed_link(dp->dn) || phy_np) { |
1225 | if (ds->ops->phylink_mac_link_down) | |
1226 | ds->ops->phylink_mac_link_down(ds, port, | |
1227 | MLO_AN_FIXED, PHY_INTERFACE_MODE_NA); | |
a20f9970 | 1228 | return dsa_port_phylink_register(dp); |
3be98b2d | 1229 | } |
a20f9970 AL |
1230 | return 0; |
1231 | } | |
0e279218 IC |
1232 | |
1233 | dev_warn(ds->dev, | |
1234 | "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n"); | |
1235 | ||
33615367 SR |
1236 | if (of_phy_is_fixed_link(dp->dn)) |
1237 | return dsa_port_fixed_link_register_of(dp); | |
1238 | else | |
1239 | return dsa_port_setup_phy_of(dp, true); | |
1240 | } | |
57ab1ca2 | 1241 | |
33615367 SR |
1242 | void dsa_port_link_unregister_of(struct dsa_port *dp) |
1243 | { | |
0e279218 IC |
1244 | struct dsa_switch *ds = dp->ds; |
1245 | ||
a20f9970 | 1246 | if (!ds->ops->adjust_link && dp->pl) { |
0e279218 IC |
1247 | rtnl_lock(); |
1248 | phylink_disconnect_phy(dp->pl); | |
1249 | rtnl_unlock(); | |
1250 | phylink_destroy(dp->pl); | |
a20f9970 | 1251 | dp->pl = NULL; |
0e279218 IC |
1252 | return; |
1253 | } | |
1254 | ||
33615367 SR |
1255 | if (of_phy_is_fixed_link(dp->dn)) |
1256 | of_phy_deregister_fixed_link(dp->dn); | |
1257 | else | |
1258 | dsa_port_setup_phy_of(dp, false); | |
57ab1ca2 | 1259 | } |
cf963573 FF |
1260 | |
1261 | int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data) | |
1262 | { | |
1263 | struct phy_device *phydev; | |
1264 | int ret = -EOPNOTSUPP; | |
1265 | ||
1266 | if (of_phy_is_fixed_link(dp->dn)) | |
1267 | return ret; | |
1268 | ||
1269 | phydev = dsa_port_get_phy_device(dp); | |
1270 | if (IS_ERR_OR_NULL(phydev)) | |
1271 | return ret; | |
1272 | ||
1273 | ret = phy_ethtool_get_strings(phydev, data); | |
1274 | put_device(&phydev->mdio.dev); | |
1275 | ||
1276 | return ret; | |
1277 | } | |
1278 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings); | |
1279 | ||
1280 | int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data) | |
1281 | { | |
1282 | struct phy_device *phydev; | |
1283 | int ret = -EOPNOTSUPP; | |
1284 | ||
1285 | if (of_phy_is_fixed_link(dp->dn)) | |
1286 | return ret; | |
1287 | ||
1288 | phydev = dsa_port_get_phy_device(dp); | |
1289 | if (IS_ERR_OR_NULL(phydev)) | |
1290 | return ret; | |
1291 | ||
1292 | ret = phy_ethtool_get_stats(phydev, NULL, data); | |
1293 | put_device(&phydev->mdio.dev); | |
1294 | ||
1295 | return ret; | |
1296 | } | |
1297 | EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats); | |
1298 | ||
1299 | int dsa_port_get_phy_sset_count(struct dsa_port *dp) | |
1300 | { | |
1301 | struct phy_device *phydev; | |
1302 | int ret = -EOPNOTSUPP; | |
1303 | ||
1304 | if (of_phy_is_fixed_link(dp->dn)) | |
1305 | return ret; | |
1306 | ||
1307 | phydev = dsa_port_get_phy_device(dp); | |
1308 | if (IS_ERR_OR_NULL(phydev)) | |
1309 | return ret; | |
1310 | ||
1311 | ret = phy_ethtool_get_sset_count(phydev); | |
1312 | put_device(&phydev->mdio.dev); | |
1313 | ||
1314 | return ret; | |
1315 | } | |
1316 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count); | |
18596f50 GM |
1317 | |
1318 | int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr) | |
1319 | { | |
1320 | struct dsa_notifier_hsr_info info = { | |
1321 | .sw_index = dp->ds->index, | |
1322 | .port = dp->index, | |
1323 | .hsr = hsr, | |
1324 | }; | |
1325 | int err; | |
1326 | ||
1327 | dp->hsr_dev = hsr; | |
1328 | ||
1329 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info); | |
1330 | if (err) | |
1331 | dp->hsr_dev = NULL; | |
1332 | ||
1333 | return err; | |
1334 | } | |
1335 | ||
1336 | void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr) | |
1337 | { | |
1338 | struct dsa_notifier_hsr_info info = { | |
1339 | .sw_index = dp->ds->index, | |
1340 | .port = dp->index, | |
1341 | .hsr = hsr, | |
1342 | }; | |
1343 | int err; | |
1344 | ||
1345 | dp->hsr_dev = NULL; | |
1346 | ||
1347 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info); | |
1348 | if (err) | |
ab97462b VO |
1349 | dev_err(dp->ds->dev, |
1350 | "port %d failed to notify DSA_NOTIFIER_HSR_LEAVE: %pe\n", | |
1351 | dp->index, ERR_PTR(err)); | |
18596f50 | 1352 | } |
c64b9c05 | 1353 | |
724395f4 | 1354 | int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid, bool broadcast) |
c64b9c05 VO |
1355 | { |
1356 | struct dsa_notifier_tag_8021q_vlan_info info = { | |
1357 | .tree_index = dp->ds->dst->index, | |
1358 | .sw_index = dp->ds->index, | |
1359 | .port = dp->index, | |
1360 | .vid = vid, | |
1361 | }; | |
1362 | ||
724395f4 VO |
1363 | if (broadcast) |
1364 | return dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info); | |
1365 | ||
1366 | return dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info); | |
c64b9c05 VO |
1367 | } |
1368 | ||
724395f4 | 1369 | void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid, bool broadcast) |
c64b9c05 VO |
1370 | { |
1371 | struct dsa_notifier_tag_8021q_vlan_info info = { | |
1372 | .tree_index = dp->ds->dst->index, | |
1373 | .sw_index = dp->ds->index, | |
1374 | .port = dp->index, | |
1375 | .vid = vid, | |
1376 | }; | |
1377 | int err; | |
1378 | ||
724395f4 VO |
1379 | if (broadcast) |
1380 | err = dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info); | |
1381 | else | |
1382 | err = dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info); | |
c64b9c05 | 1383 | if (err) |
ab97462b VO |
1384 | dev_err(dp->ds->dev, |
1385 | "port %d failed to notify tag_8021q VLAN %d deletion: %pe\n", | |
1386 | dp->index, vid, ERR_PTR(err)); | |
c64b9c05 | 1387 | } |