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 | ||
9c2054a5 | 133 | if (!dp->bridge_dev) |
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 | ||
9c2054a5 | 161 | if (!dp->bridge_dev) |
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 VO |
223 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); |
224 | struct net_device *br = dp->bridge_dev; | |
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 | ||
123abc06 VO |
273 | static void dsa_port_bridge_tx_fwd_unoffload(struct dsa_port *dp, |
274 | struct net_device *bridge_dev) | |
275 | { | |
123abc06 VO |
276 | int bridge_num = dp->bridge_num; |
277 | struct dsa_switch *ds = dp->ds; | |
278 | ||
279 | /* No bridge TX forwarding offload => do nothing */ | |
280 | if (!ds->ops->port_bridge_tx_fwd_unoffload || dp->bridge_num == -1) | |
281 | return; | |
282 | ||
283 | dp->bridge_num = -1; | |
284 | ||
f5e165e7 | 285 | dsa_bridge_num_put(bridge_dev, bridge_num); |
123abc06 VO |
286 | |
287 | /* Notify the chips only once the offload has been deactivated, so | |
288 | * that they can update their configuration accordingly. | |
289 | */ | |
290 | ds->ops->port_bridge_tx_fwd_unoffload(ds, dp->index, bridge_dev, | |
291 | bridge_num); | |
292 | } | |
293 | ||
294 | static bool dsa_port_bridge_tx_fwd_offload(struct dsa_port *dp, | |
295 | struct net_device *bridge_dev) | |
296 | { | |
123abc06 VO |
297 | struct dsa_switch *ds = dp->ds; |
298 | int bridge_num, err; | |
299 | ||
300 | if (!ds->ops->port_bridge_tx_fwd_offload) | |
301 | return false; | |
302 | ||
f5e165e7 VO |
303 | bridge_num = dsa_bridge_num_get(bridge_dev, |
304 | ds->num_fwd_offloading_bridges); | |
305 | if (bridge_num < 0) | |
306 | return false; | |
123abc06 VO |
307 | |
308 | dp->bridge_num = bridge_num; | |
309 | ||
310 | /* Notify the driver */ | |
311 | err = ds->ops->port_bridge_tx_fwd_offload(ds, dp->index, bridge_dev, | |
312 | bridge_num); | |
313 | if (err) { | |
314 | dsa_port_bridge_tx_fwd_unoffload(dp, bridge_dev); | |
315 | return false; | |
316 | } | |
317 | ||
318 | return true; | |
319 | } | |
320 | ||
2afc526a VO |
321 | int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br, |
322 | struct netlink_ext_ack *extack) | |
cfbed329 VD |
323 | { |
324 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 325 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
326 | .sw_index = dp->ds->index, |
327 | .port = dp->index, | |
328 | .br = br, | |
329 | }; | |
2f5dc00f VO |
330 | struct net_device *dev = dp->slave; |
331 | struct net_device *brport_dev; | |
123abc06 | 332 | bool tx_fwd_offload; |
cfbed329 VD |
333 | int err; |
334 | ||
c1388063 RK |
335 | /* Here the interface is already bridged. Reflect the current |
336 | * configuration so that drivers can program their chips accordingly. | |
cfbed329 VD |
337 | */ |
338 | dp->bridge_dev = br; | |
339 | ||
2f5dc00f VO |
340 | brport_dev = dsa_port_to_bridge_port(dp); |
341 | ||
f66a6a69 | 342 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info); |
5961d6a1 VO |
343 | if (err) |
344 | goto out_rollback; | |
cfbed329 | 345 | |
123abc06 VO |
346 | tx_fwd_offload = dsa_port_bridge_tx_fwd_offload(dp, br); |
347 | ||
4e51bf44 VO |
348 | err = switchdev_bridge_port_offload(brport_dev, dev, dp, |
349 | &dsa_slave_switchdev_notifier, | |
350 | &dsa_slave_switchdev_blocking_notifier, | |
123abc06 | 351 | tx_fwd_offload, extack); |
5961d6a1 VO |
352 | if (err) |
353 | goto out_rollback_unbridge; | |
354 | ||
4e51bf44 | 355 | err = dsa_port_switchdev_sync_attrs(dp, extack); |
2f5dc00f VO |
356 | if (err) |
357 | goto out_rollback_unoffload; | |
358 | ||
5961d6a1 | 359 | return 0; |
cfbed329 | 360 | |
2f5dc00f | 361 | out_rollback_unoffload: |
4e51bf44 VO |
362 | switchdev_bridge_port_unoffload(brport_dev, dp, |
363 | &dsa_slave_switchdev_notifier, | |
364 | &dsa_slave_switchdev_blocking_notifier); | |
5961d6a1 VO |
365 | out_rollback_unbridge: |
366 | dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); | |
367 | out_rollback: | |
368 | dp->bridge_dev = NULL; | |
cfbed329 VD |
369 | return err; |
370 | } | |
371 | ||
4e51bf44 | 372 | void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br) |
74918945 | 373 | { |
2f5dc00f VO |
374 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); |
375 | ||
09dba21b VO |
376 | /* Don't try to unoffload something that is not offloaded */ |
377 | if (!brport_dev) | |
378 | return; | |
379 | ||
4e51bf44 VO |
380 | switchdev_bridge_port_unoffload(brport_dev, dp, |
381 | &dsa_slave_switchdev_notifier, | |
382 | &dsa_slave_switchdev_blocking_notifier); | |
d7d0d423 VO |
383 | |
384 | dsa_flush_workqueue(); | |
74918945 VO |
385 | } |
386 | ||
cfbed329 VD |
387 | void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) |
388 | { | |
389 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 390 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
391 | .sw_index = dp->ds->index, |
392 | .port = dp->index, | |
393 | .br = br, | |
394 | }; | |
395 | int err; | |
396 | ||
397 | /* Here the port is already unbridged. Reflect the current configuration | |
398 | * so that drivers can program their chips accordingly. | |
399 | */ | |
400 | dp->bridge_dev = NULL; | |
401 | ||
123abc06 VO |
402 | dsa_port_bridge_tx_fwd_unoffload(dp, br); |
403 | ||
f66a6a69 | 404 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); |
cfbed329 | 405 | if (err) |
ab97462b VO |
406 | dev_err(dp->ds->dev, |
407 | "port %d failed to notify DSA_NOTIFIER_BRIDGE_LEAVE: %pe\n", | |
408 | dp->index, ERR_PTR(err)); | |
cfbed329 | 409 | |
74918945 | 410 | dsa_port_switchdev_unsync_attrs(dp); |
cfbed329 | 411 | } |
4d61d304 | 412 | |
058102a6 TW |
413 | int dsa_port_lag_change(struct dsa_port *dp, |
414 | struct netdev_lag_lower_state_info *linfo) | |
415 | { | |
416 | struct dsa_notifier_lag_info info = { | |
417 | .sw_index = dp->ds->index, | |
418 | .port = dp->index, | |
419 | }; | |
420 | bool tx_enabled; | |
421 | ||
422 | if (!dp->lag_dev) | |
423 | return 0; | |
424 | ||
425 | /* On statically configured aggregates (e.g. loadbalance | |
426 | * without LACP) ports will always be tx_enabled, even if the | |
427 | * link is down. Thus we require both link_up and tx_enabled | |
428 | * in order to include it in the tx set. | |
429 | */ | |
430 | tx_enabled = linfo->link_up && linfo->tx_enabled; | |
431 | ||
432 | if (tx_enabled == dp->lag_tx_enabled) | |
433 | return 0; | |
434 | ||
435 | dp->lag_tx_enabled = tx_enabled; | |
436 | ||
437 | return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info); | |
438 | } | |
439 | ||
440 | int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag, | |
2afc526a VO |
441 | struct netdev_lag_upper_info *uinfo, |
442 | struct netlink_ext_ack *extack) | |
058102a6 TW |
443 | { |
444 | struct dsa_notifier_lag_info info = { | |
445 | .sw_index = dp->ds->index, | |
446 | .port = dp->index, | |
447 | .lag = lag, | |
448 | .info = uinfo, | |
449 | }; | |
185c9a76 | 450 | struct net_device *bridge_dev; |
058102a6 TW |
451 | int err; |
452 | ||
453 | dsa_lag_map(dp->ds->dst, lag); | |
454 | dp->lag_dev = lag; | |
455 | ||
456 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info); | |
185c9a76 VO |
457 | if (err) |
458 | goto err_lag_join; | |
058102a6 | 459 | |
185c9a76 VO |
460 | bridge_dev = netdev_master_upper_dev_get(lag); |
461 | if (!bridge_dev || !netif_is_bridge_master(bridge_dev)) | |
462 | return 0; | |
463 | ||
2afc526a | 464 | err = dsa_port_bridge_join(dp, bridge_dev, extack); |
185c9a76 VO |
465 | if (err) |
466 | goto err_bridge_join; | |
467 | ||
468 | return 0; | |
469 | ||
470 | err_bridge_join: | |
471 | dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); | |
472 | err_lag_join: | |
473 | dp->lag_dev = NULL; | |
474 | dsa_lag_unmap(dp->ds->dst, lag); | |
058102a6 TW |
475 | return err; |
476 | } | |
477 | ||
4e51bf44 | 478 | void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag) |
74918945 VO |
479 | { |
480 | if (dp->bridge_dev) | |
4e51bf44 | 481 | dsa_port_pre_bridge_leave(dp, dp->bridge_dev); |
74918945 VO |
482 | } |
483 | ||
058102a6 TW |
484 | void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag) |
485 | { | |
486 | struct dsa_notifier_lag_info info = { | |
487 | .sw_index = dp->ds->index, | |
488 | .port = dp->index, | |
489 | .lag = lag, | |
490 | }; | |
491 | int err; | |
492 | ||
493 | if (!dp->lag_dev) | |
494 | return; | |
495 | ||
496 | /* Port might have been part of a LAG that in turn was | |
497 | * attached to a bridge. | |
498 | */ | |
499 | if (dp->bridge_dev) | |
500 | dsa_port_bridge_leave(dp, dp->bridge_dev); | |
501 | ||
502 | dp->lag_tx_enabled = false; | |
503 | dp->lag_dev = NULL; | |
504 | ||
505 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); | |
506 | if (err) | |
ab97462b VO |
507 | dev_err(dp->ds->dev, |
508 | "port %d failed to notify DSA_NOTIFIER_LAG_LEAVE: %pe\n", | |
509 | dp->index, ERR_PTR(err)); | |
058102a6 TW |
510 | |
511 | dsa_lag_unmap(dp->ds->dst, lag); | |
512 | } | |
513 | ||
adb256eb | 514 | /* Must be called under rcu_read_lock() */ |
8f5d16f6 | 515 | static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, |
89153ed6 VO |
516 | bool vlan_filtering, |
517 | struct netlink_ext_ack *extack) | |
8f5d16f6 VO |
518 | { |
519 | struct dsa_switch *ds = dp->ds; | |
d0004a02 VO |
520 | struct dsa_port *other_dp; |
521 | int err; | |
adb256eb VO |
522 | |
523 | /* VLAN awareness was off, so the question is "can we turn it on". | |
524 | * We may have had 8021q uppers, those need to go. Make sure we don't | |
525 | * enter an inconsistent state: deny changing the VLAN awareness state | |
526 | * as long as we have 8021q uppers. | |
527 | */ | |
57d77986 | 528 | if (vlan_filtering && dsa_port_is_user(dp)) { |
adb256eb VO |
529 | struct net_device *upper_dev, *slave = dp->slave; |
530 | struct net_device *br = dp->bridge_dev; | |
531 | struct list_head *iter; | |
532 | ||
533 | netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) { | |
534 | struct bridge_vlan_info br_info; | |
535 | u16 vid; | |
536 | ||
537 | if (!is_vlan_dev(upper_dev)) | |
538 | continue; | |
539 | ||
540 | vid = vlan_dev_vlan_id(upper_dev); | |
541 | ||
542 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the | |
543 | * device, respectively the VID is not found, returning | |
544 | * 0 means success, which is a failure for us here. | |
545 | */ | |
546 | err = br_vlan_get_info(br, vid, &br_info); | |
547 | if (err == 0) { | |
89153ed6 VO |
548 | NL_SET_ERR_MSG_MOD(extack, |
549 | "Must first remove VLAN uppers having VIDs also present in bridge"); | |
adb256eb VO |
550 | return false; |
551 | } | |
552 | } | |
553 | } | |
8f5d16f6 VO |
554 | |
555 | if (!ds->vlan_filtering_is_global) | |
556 | return true; | |
557 | ||
558 | /* For cases where enabling/disabling VLAN awareness is global to the | |
559 | * switch, we need to handle the case where multiple bridges span | |
560 | * different ports of the same switch device and one of them has a | |
561 | * different setting than what is being requested. | |
562 | */ | |
d0004a02 | 563 | dsa_switch_for_each_port(other_dp, ds) { |
8f5d16f6 VO |
564 | struct net_device *other_bridge; |
565 | ||
d0004a02 | 566 | other_bridge = other_dp->bridge_dev; |
8f5d16f6 VO |
567 | if (!other_bridge) |
568 | continue; | |
569 | /* If it's the same bridge, it also has same | |
570 | * vlan_filtering setting => no need to check | |
571 | */ | |
572 | if (other_bridge == dp->bridge_dev) | |
573 | continue; | |
574 | if (br_vlan_enabled(other_bridge) != vlan_filtering) { | |
89153ed6 VO |
575 | NL_SET_ERR_MSG_MOD(extack, |
576 | "VLAN filtering is a global setting"); | |
8f5d16f6 VO |
577 | return false; |
578 | } | |
579 | } | |
580 | return true; | |
581 | } | |
582 | ||
89153ed6 VO |
583 | int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering, |
584 | struct netlink_ext_ack *extack) | |
4d61d304 | 585 | { |
06cfb2df | 586 | bool old_vlan_filtering = dsa_port_is_vlan_filtering(dp); |
4d61d304 | 587 | struct dsa_switch *ds = dp->ds; |
bae33f2b | 588 | bool apply; |
33162e9a | 589 | int err; |
4d61d304 | 590 | |
bae33f2b VO |
591 | if (!ds->ops->port_vlan_filtering) |
592 | return -EOPNOTSUPP; | |
adb256eb | 593 | |
bae33f2b VO |
594 | /* We are called from dsa_slave_switchdev_blocking_event(), |
595 | * which is not under rcu_read_lock(), unlike | |
596 | * dsa_slave_switchdev_event(). | |
597 | */ | |
598 | rcu_read_lock(); | |
89153ed6 | 599 | apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack); |
bae33f2b VO |
600 | rcu_read_unlock(); |
601 | if (!apply) | |
602 | return -EINVAL; | |
8f5d16f6 | 603 | |
ec9121e7 VO |
604 | if (dsa_port_is_vlan_filtering(dp) == vlan_filtering) |
605 | return 0; | |
606 | ||
89153ed6 VO |
607 | err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering, |
608 | extack); | |
8f5d16f6 VO |
609 | if (err) |
610 | return err; | |
611 | ||
06cfb2df | 612 | if (ds->vlan_filtering_is_global) { |
d0004a02 | 613 | struct dsa_port *other_dp; |
06cfb2df | 614 | |
bae33f2b | 615 | ds->vlan_filtering = vlan_filtering; |
06cfb2df | 616 | |
d0004a02 VO |
617 | dsa_switch_for_each_user_port(other_dp, ds) { |
618 | struct net_device *slave = dp->slave; | |
06cfb2df VO |
619 | |
620 | /* We might be called in the unbind path, so not | |
621 | * all slave devices might still be registered. | |
622 | */ | |
06cfb2df VO |
623 | if (!slave) |
624 | continue; | |
625 | ||
626 | err = dsa_slave_manage_vlan_filtering(slave, | |
627 | vlan_filtering); | |
628 | if (err) | |
629 | goto restore; | |
630 | } | |
631 | } else { | |
bae33f2b | 632 | dp->vlan_filtering = vlan_filtering; |
2e554a7a | 633 | |
06cfb2df VO |
634 | err = dsa_slave_manage_vlan_filtering(dp->slave, |
635 | vlan_filtering); | |
636 | if (err) | |
637 | goto restore; | |
638 | } | |
639 | ||
4d61d304 | 640 | return 0; |
06cfb2df VO |
641 | |
642 | restore: | |
643 | ds->ops->port_vlan_filtering(ds, dp->index, old_vlan_filtering, NULL); | |
644 | ||
645 | if (ds->vlan_filtering_is_global) | |
646 | ds->vlan_filtering = old_vlan_filtering; | |
647 | else | |
648 | dp->vlan_filtering = old_vlan_filtering; | |
649 | ||
650 | return err; | |
4d61d304 | 651 | } |
d87bd94e | 652 | |
54a0ed0d RK |
653 | /* This enforces legacy behavior for switch drivers which assume they can't |
654 | * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0 | |
655 | */ | |
656 | bool dsa_port_skip_vlan_configuration(struct dsa_port *dp) | |
657 | { | |
658 | struct dsa_switch *ds = dp->ds; | |
659 | ||
660 | if (!dp->bridge_dev) | |
661 | return false; | |
662 | ||
663 | return (!ds->configure_vlan_while_not_filtering && | |
664 | !br_vlan_enabled(dp->bridge_dev)); | |
665 | } | |
666 | ||
bae33f2b | 667 | int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) |
d87bd94e VD |
668 | { |
669 | unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock); | |
670 | unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); | |
bae33f2b | 671 | struct dsa_notifier_ageing_time_info info; |
bae33f2b VO |
672 | int err; |
673 | ||
674 | info.ageing_time = ageing_time; | |
d87bd94e | 675 | |
bae33f2b VO |
676 | err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
677 | if (err) | |
678 | return err; | |
d87bd94e | 679 | |
d87bd94e | 680 | dp->ageing_time = ageing_time; |
d87bd94e | 681 | |
77b61365 | 682 | return 0; |
d87bd94e | 683 | } |
d1cffff0 | 684 | |
e18f4c18 | 685 | int dsa_port_pre_bridge_flags(const struct dsa_port *dp, |
a8b659e7 VO |
686 | struct switchdev_brport_flags flags, |
687 | struct netlink_ext_ack *extack) | |
ea87005a FF |
688 | { |
689 | struct dsa_switch *ds = dp->ds; | |
690 | ||
a8b659e7 | 691 | if (!ds->ops->port_pre_bridge_flags) |
ea87005a FF |
692 | return -EINVAL; |
693 | ||
a8b659e7 | 694 | return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack); |
ea87005a FF |
695 | } |
696 | ||
045c45d1 | 697 | int dsa_port_bridge_flags(struct dsa_port *dp, |
a8b659e7 VO |
698 | struct switchdev_brport_flags flags, |
699 | struct netlink_ext_ack *extack) | |
57652796 RK |
700 | { |
701 | struct dsa_switch *ds = dp->ds; | |
045c45d1 | 702 | int err; |
57652796 | 703 | |
a8b659e7 | 704 | if (!ds->ops->port_bridge_flags) |
70a7c484 | 705 | return -EOPNOTSUPP; |
57652796 | 706 | |
045c45d1 VO |
707 | err = ds->ops->port_bridge_flags(ds, dp->index, flags, extack); |
708 | if (err) | |
709 | return err; | |
710 | ||
711 | if (flags.mask & BR_LEARNING) { | |
712 | bool learning = flags.val & BR_LEARNING; | |
713 | ||
714 | if (learning == dp->learning) | |
715 | return 0; | |
716 | ||
bee7c577 VO |
717 | if ((dp->learning && !learning) && |
718 | (dp->stp_state == BR_STATE_LEARNING || | |
719 | dp->stp_state == BR_STATE_FORWARDING)) | |
045c45d1 VO |
720 | dsa_port_fast_age(dp); |
721 | ||
722 | dp->learning = learning; | |
723 | } | |
724 | ||
725 | return 0; | |
57652796 RK |
726 | } |
727 | ||
bfcb8132 | 728 | int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu, |
88faba20 | 729 | bool targeted_match) |
bfcb8132 VO |
730 | { |
731 | struct dsa_notifier_mtu_info info = { | |
732 | .sw_index = dp->ds->index, | |
88faba20 | 733 | .targeted_match = targeted_match, |
bfcb8132 VO |
734 | .port = dp->index, |
735 | .mtu = new_mtu, | |
736 | }; | |
737 | ||
738 | return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info); | |
739 | } | |
740 | ||
2acf4e6a AS |
741 | int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
742 | u16 vid) | |
d1cffff0 | 743 | { |
685fb6a4 VD |
744 | struct dsa_notifier_fdb_info info = { |
745 | .sw_index = dp->ds->index, | |
746 | .port = dp->index, | |
2acf4e6a AS |
747 | .addr = addr, |
748 | .vid = vid, | |
685fb6a4 | 749 | }; |
d1cffff0 | 750 | |
685fb6a4 | 751 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info); |
d1cffff0 VD |
752 | } |
753 | ||
2acf4e6a AS |
754 | int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, |
755 | u16 vid) | |
d1cffff0 | 756 | { |
685fb6a4 VD |
757 | struct dsa_notifier_fdb_info info = { |
758 | .sw_index = dp->ds->index, | |
759 | .port = dp->index, | |
2acf4e6a AS |
760 | .addr = addr, |
761 | .vid = vid, | |
762 | ||
685fb6a4 | 763 | }; |
d1cffff0 | 764 | |
685fb6a4 | 765 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info); |
d1cffff0 VD |
766 | } |
767 | ||
3dc80afc VO |
768 | int dsa_port_host_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
769 | u16 vid) | |
770 | { | |
771 | struct dsa_notifier_fdb_info info = { | |
772 | .sw_index = dp->ds->index, | |
773 | .port = dp->index, | |
774 | .addr = addr, | |
775 | .vid = vid, | |
776 | }; | |
26ee7b06 VO |
777 | struct dsa_port *cpu_dp = dp->cpu_dp; |
778 | int err; | |
779 | ||
780 | err = dev_uc_add(cpu_dp->master, addr); | |
781 | if (err) | |
782 | return err; | |
3dc80afc VO |
783 | |
784 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_ADD, &info); | |
785 | } | |
786 | ||
787 | int dsa_port_host_fdb_del(struct dsa_port *dp, const unsigned char *addr, | |
788 | u16 vid) | |
789 | { | |
790 | struct dsa_notifier_fdb_info info = { | |
791 | .sw_index = dp->ds->index, | |
792 | .port = dp->index, | |
793 | .addr = addr, | |
794 | .vid = vid, | |
795 | }; | |
26ee7b06 VO |
796 | struct dsa_port *cpu_dp = dp->cpu_dp; |
797 | int err; | |
798 | ||
799 | err = dev_uc_del(cpu_dp->master, addr); | |
800 | if (err) | |
801 | return err; | |
3dc80afc VO |
802 | |
803 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_DEL, &info); | |
804 | } | |
805 | ||
de40fc5d VD |
806 | int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data) |
807 | { | |
808 | struct dsa_switch *ds = dp->ds; | |
809 | int port = dp->index; | |
810 | ||
811 | if (!ds->ops->port_fdb_dump) | |
812 | return -EOPNOTSUPP; | |
813 | ||
814 | return ds->ops->port_fdb_dump(ds, port, cb, data); | |
815 | } | |
816 | ||
bb9f6031 | 817 | int dsa_port_mdb_add(const struct dsa_port *dp, |
ffb68fc5 | 818 | const struct switchdev_obj_port_mdb *mdb) |
3a9afea3 | 819 | { |
8ae5bcdc VD |
820 | struct dsa_notifier_mdb_info info = { |
821 | .sw_index = dp->ds->index, | |
822 | .port = dp->index, | |
8ae5bcdc VD |
823 | .mdb = mdb, |
824 | }; | |
3a9afea3 | 825 | |
8ae5bcdc | 826 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info); |
3a9afea3 VD |
827 | } |
828 | ||
bb9f6031 | 829 | int dsa_port_mdb_del(const struct dsa_port *dp, |
3a9afea3 VD |
830 | const struct switchdev_obj_port_mdb *mdb) |
831 | { | |
8ae5bcdc VD |
832 | struct dsa_notifier_mdb_info info = { |
833 | .sw_index = dp->ds->index, | |
834 | .port = dp->index, | |
835 | .mdb = mdb, | |
836 | }; | |
3a9afea3 | 837 | |
8ae5bcdc | 838 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info); |
3a9afea3 VD |
839 | } |
840 | ||
b8e997c4 VO |
841 | int dsa_port_host_mdb_add(const struct dsa_port *dp, |
842 | const struct switchdev_obj_port_mdb *mdb) | |
843 | { | |
844 | struct dsa_notifier_mdb_info info = { | |
845 | .sw_index = dp->ds->index, | |
846 | .port = dp->index, | |
847 | .mdb = mdb, | |
848 | }; | |
26ee7b06 VO |
849 | struct dsa_port *cpu_dp = dp->cpu_dp; |
850 | int err; | |
851 | ||
852 | err = dev_mc_add(cpu_dp->master, mdb->addr); | |
853 | if (err) | |
854 | return err; | |
b8e997c4 VO |
855 | |
856 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_ADD, &info); | |
857 | } | |
858 | ||
859 | int dsa_port_host_mdb_del(const struct dsa_port *dp, | |
860 | const struct switchdev_obj_port_mdb *mdb) | |
861 | { | |
862 | struct dsa_notifier_mdb_info info = { | |
863 | .sw_index = dp->ds->index, | |
864 | .port = dp->index, | |
865 | .mdb = mdb, | |
866 | }; | |
26ee7b06 VO |
867 | struct dsa_port *cpu_dp = dp->cpu_dp; |
868 | int err; | |
869 | ||
870 | err = dev_mc_del(cpu_dp->master, mdb->addr); | |
871 | if (err) | |
872 | return err; | |
b8e997c4 VO |
873 | |
874 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_DEL, &info); | |
875 | } | |
876 | ||
076e7133 | 877 | int dsa_port_vlan_add(struct dsa_port *dp, |
31046a5f VO |
878 | const struct switchdev_obj_port_vlan *vlan, |
879 | struct netlink_ext_ack *extack) | |
076e7133 | 880 | { |
d0c627b8 VD |
881 | struct dsa_notifier_vlan_info info = { |
882 | .sw_index = dp->ds->index, | |
883 | .port = dp->index, | |
d0c627b8 | 884 | .vlan = vlan, |
31046a5f | 885 | .extack = extack, |
d0c627b8 | 886 | }; |
076e7133 | 887 | |
c5335d73 | 888 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info); |
076e7133 VD |
889 | } |
890 | ||
891 | int dsa_port_vlan_del(struct dsa_port *dp, | |
892 | const struct switchdev_obj_port_vlan *vlan) | |
893 | { | |
d0c627b8 VD |
894 | struct dsa_notifier_vlan_info info = { |
895 | .sw_index = dp->ds->index, | |
896 | .port = dp->index, | |
897 | .vlan = vlan, | |
898 | }; | |
076e7133 | 899 | |
c5335d73 | 900 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info); |
076e7133 | 901 | } |
57ab1ca2 | 902 | |
c595c433 HV |
903 | int dsa_port_mrp_add(const struct dsa_port *dp, |
904 | const struct switchdev_obj_mrp *mrp) | |
905 | { | |
906 | struct dsa_notifier_mrp_info info = { | |
907 | .sw_index = dp->ds->index, | |
908 | .port = dp->index, | |
909 | .mrp = mrp, | |
910 | }; | |
911 | ||
912 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info); | |
913 | } | |
914 | ||
915 | int dsa_port_mrp_del(const struct dsa_port *dp, | |
916 | const struct switchdev_obj_mrp *mrp) | |
917 | { | |
918 | struct dsa_notifier_mrp_info info = { | |
919 | .sw_index = dp->ds->index, | |
920 | .port = dp->index, | |
921 | .mrp = mrp, | |
922 | }; | |
923 | ||
924 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info); | |
925 | } | |
926 | ||
927 | int dsa_port_mrp_add_ring_role(const struct dsa_port *dp, | |
928 | const struct switchdev_obj_ring_role_mrp *mrp) | |
929 | { | |
930 | struct dsa_notifier_mrp_ring_role_info info = { | |
931 | .sw_index = dp->ds->index, | |
932 | .port = dp->index, | |
933 | .mrp = mrp, | |
934 | }; | |
935 | ||
936 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info); | |
937 | } | |
938 | ||
939 | int dsa_port_mrp_del_ring_role(const struct dsa_port *dp, | |
940 | const struct switchdev_obj_ring_role_mrp *mrp) | |
941 | { | |
942 | struct dsa_notifier_mrp_ring_role_info info = { | |
943 | .sw_index = dp->ds->index, | |
944 | .port = dp->index, | |
945 | .mrp = mrp, | |
946 | }; | |
947 | ||
948 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info); | |
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 | ||
984 | if (!ds->ops->phylink_validate) | |
985 | return; | |
986 | ||
987 | ds->ops->phylink_validate(ds, dp->index, supported, state); | |
988 | } | |
77373d49 | 989 | |
8ae67496 FF |
990 | static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config, |
991 | struct phylink_link_state *state) | |
77373d49 IC |
992 | { |
993 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
994 | struct dsa_switch *ds = dp->ds; | |
87615c96 | 995 | int err; |
77373d49 | 996 | |
d46b7e4f RK |
997 | /* Only called for inband modes */ |
998 | if (!ds->ops->phylink_mac_link_state) { | |
999 | state->link = 0; | |
1000 | return; | |
1001 | } | |
77373d49 | 1002 | |
87615c96 RK |
1003 | err = ds->ops->phylink_mac_link_state(ds, dp->index, state); |
1004 | if (err < 0) { | |
1005 | dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n", | |
1006 | dp->index, err); | |
d46b7e4f | 1007 | state->link = 0; |
87615c96 | 1008 | } |
77373d49 | 1009 | } |
77373d49 | 1010 | |
8ae67496 FF |
1011 | static void dsa_port_phylink_mac_config(struct phylink_config *config, |
1012 | unsigned int mode, | |
1013 | const struct phylink_link_state *state) | |
77373d49 IC |
1014 | { |
1015 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
1016 | struct dsa_switch *ds = dp->ds; | |
1017 | ||
1018 | if (!ds->ops->phylink_mac_config) | |
1019 | return; | |
1020 | ||
1021 | ds->ops->phylink_mac_config(ds, dp->index, mode, state); | |
1022 | } | |
77373d49 | 1023 | |
8ae67496 | 1024 | static void dsa_port_phylink_mac_an_restart(struct phylink_config *config) |
77373d49 IC |
1025 | { |
1026 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
1027 | struct dsa_switch *ds = dp->ds; | |
1028 | ||
1029 | if (!ds->ops->phylink_mac_an_restart) | |
1030 | return; | |
1031 | ||
1032 | ds->ops->phylink_mac_an_restart(ds, dp->index); | |
1033 | } | |
77373d49 | 1034 | |
8ae67496 FF |
1035 | static void dsa_port_phylink_mac_link_down(struct phylink_config *config, |
1036 | unsigned int mode, | |
1037 | phy_interface_t interface) | |
77373d49 IC |
1038 | { |
1039 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
0e279218 | 1040 | struct phy_device *phydev = NULL; |
77373d49 IC |
1041 | struct dsa_switch *ds = dp->ds; |
1042 | ||
57d77986 | 1043 | if (dsa_port_is_user(dp)) |
0e279218 IC |
1044 | phydev = dp->slave->phydev; |
1045 | ||
77373d49 | 1046 | if (!ds->ops->phylink_mac_link_down) { |
0e279218 IC |
1047 | if (ds->ops->adjust_link && phydev) |
1048 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
1049 | return; |
1050 | } | |
1051 | ||
1052 | ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); | |
1053 | } | |
77373d49 | 1054 | |
8ae67496 | 1055 | static void dsa_port_phylink_mac_link_up(struct phylink_config *config, |
91a208f2 | 1056 | struct phy_device *phydev, |
8ae67496 FF |
1057 | unsigned int mode, |
1058 | phy_interface_t interface, | |
91a208f2 RK |
1059 | int speed, int duplex, |
1060 | bool tx_pause, bool rx_pause) | |
77373d49 IC |
1061 | { |
1062 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
77373d49 IC |
1063 | struct dsa_switch *ds = dp->ds; |
1064 | ||
1065 | if (!ds->ops->phylink_mac_link_up) { | |
0e279218 IC |
1066 | if (ds->ops->adjust_link && phydev) |
1067 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
1068 | return; |
1069 | } | |
1070 | ||
5b502a7b RK |
1071 | ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev, |
1072 | speed, duplex, tx_pause, rx_pause); | |
77373d49 | 1073 | } |
77373d49 IC |
1074 | |
1075 | const struct phylink_mac_ops dsa_port_phylink_mac_ops = { | |
1076 | .validate = dsa_port_phylink_validate, | |
d46b7e4f | 1077 | .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state, |
77373d49 IC |
1078 | .mac_config = dsa_port_phylink_mac_config, |
1079 | .mac_an_restart = dsa_port_phylink_mac_an_restart, | |
1080 | .mac_link_down = dsa_port_phylink_mac_link_down, | |
1081 | .mac_link_up = dsa_port_phylink_mac_link_up, | |
1082 | }; | |
1083 | ||
6207a78c FF |
1084 | static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable) |
1085 | { | |
1086 | struct dsa_switch *ds = dp->ds; | |
1087 | struct phy_device *phydev; | |
1088 | int port = dp->index; | |
1089 | int err = 0; | |
1090 | ||
1091 | phydev = dsa_port_get_phy_device(dp); | |
1092 | if (!phydev) | |
1093 | return 0; | |
1094 | ||
1095 | if (IS_ERR(phydev)) | |
1096 | return PTR_ERR(phydev); | |
1097 | ||
33615367 | 1098 | if (enable) { |
33615367 SR |
1099 | err = genphy_resume(phydev); |
1100 | if (err < 0) | |
1101 | goto err_put_dev; | |
1102 | ||
1103 | err = genphy_read_status(phydev); | |
1104 | if (err < 0) | |
1105 | goto err_put_dev; | |
1106 | } else { | |
1107 | err = genphy_suspend(phydev); | |
1108 | if (err < 0) | |
1109 | goto err_put_dev; | |
1110 | } | |
1111 | ||
1112 | if (ds->ops->adjust_link) | |
1113 | ds->ops->adjust_link(ds, port, phydev); | |
1114 | ||
1115 | dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev)); | |
1116 | ||
1117 | err_put_dev: | |
1118 | put_device(&phydev->mdio.dev); | |
33615367 SR |
1119 | return err; |
1120 | } | |
1121 | ||
1122 | static int dsa_port_fixed_link_register_of(struct dsa_port *dp) | |
57ab1ca2 VD |
1123 | { |
1124 | struct device_node *dn = dp->dn; | |
1125 | struct dsa_switch *ds = dp->ds; | |
1126 | struct phy_device *phydev; | |
1127 | int port = dp->index; | |
0c65b2b9 | 1128 | phy_interface_t mode; |
57ab1ca2 VD |
1129 | int err; |
1130 | ||
33615367 SR |
1131 | err = of_phy_register_fixed_link(dn); |
1132 | if (err) { | |
1133 | dev_err(ds->dev, | |
1134 | "failed to register the fixed PHY of port %d\n", | |
1135 | port); | |
1136 | return err; | |
1137 | } | |
57ab1ca2 | 1138 | |
33615367 | 1139 | phydev = of_phy_find_device(dn); |
57ab1ca2 | 1140 | |
0c65b2b9 AL |
1141 | err = of_get_phy_mode(dn, &mode); |
1142 | if (err) | |
33615367 SR |
1143 | mode = PHY_INTERFACE_MODE_NA; |
1144 | phydev->interface = mode; | |
57ab1ca2 | 1145 | |
33615367 | 1146 | genphy_read_status(phydev); |
57ab1ca2 | 1147 | |
33615367 SR |
1148 | if (ds->ops->adjust_link) |
1149 | ds->ops->adjust_link(ds, port, phydev); | |
57ab1ca2 | 1150 | |
33615367 | 1151 | put_device(&phydev->mdio.dev); |
57ab1ca2 VD |
1152 | |
1153 | return 0; | |
1154 | } | |
1155 | ||
0e279218 IC |
1156 | static int dsa_port_phylink_register(struct dsa_port *dp) |
1157 | { | |
1158 | struct dsa_switch *ds = dp->ds; | |
1159 | struct device_node *port_dn = dp->dn; | |
0c65b2b9 AL |
1160 | phy_interface_t mode; |
1161 | int err; | |
0e279218 | 1162 | |
0c65b2b9 AL |
1163 | err = of_get_phy_mode(port_dn, &mode); |
1164 | if (err) | |
0e279218 IC |
1165 | mode = PHY_INTERFACE_MODE_NA; |
1166 | ||
1167 | dp->pl_config.dev = ds->dev; | |
1168 | dp->pl_config.type = PHYLINK_DEV; | |
787cac3f | 1169 | dp->pl_config.pcs_poll = ds->pcs_poll; |
0e279218 | 1170 | |
c07c6e8e MB |
1171 | if (ds->ops->phylink_get_interfaces) |
1172 | ds->ops->phylink_get_interfaces(ds, dp->index, | |
1173 | dp->pl_config.supported_interfaces); | |
1174 | ||
0e279218 IC |
1175 | dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), |
1176 | mode, &dsa_port_phylink_mac_ops); | |
1177 | if (IS_ERR(dp->pl)) { | |
1178 | pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); | |
1179 | return PTR_ERR(dp->pl); | |
1180 | } | |
1181 | ||
1182 | err = phylink_of_phy_connect(dp->pl, port_dn, 0); | |
2131fba5 | 1183 | if (err && err != -ENODEV) { |
0e279218 IC |
1184 | pr_err("could not attach to PHY: %d\n", err); |
1185 | goto err_phy_connect; | |
1186 | } | |
1187 | ||
0e279218 IC |
1188 | return 0; |
1189 | ||
1190 | err_phy_connect: | |
1191 | phylink_destroy(dp->pl); | |
1192 | return err; | |
1193 | } | |
1194 | ||
33615367 | 1195 | int dsa_port_link_register_of(struct dsa_port *dp) |
57ab1ca2 | 1196 | { |
0e279218 | 1197 | struct dsa_switch *ds = dp->ds; |
a20f9970 | 1198 | struct device_node *phy_np; |
3be98b2d | 1199 | int port = dp->index; |
0e279218 | 1200 | |
a20f9970 AL |
1201 | if (!ds->ops->adjust_link) { |
1202 | phy_np = of_parse_phandle(dp->dn, "phy-handle", 0); | |
3be98b2d AL |
1203 | if (of_phy_is_fixed_link(dp->dn) || phy_np) { |
1204 | if (ds->ops->phylink_mac_link_down) | |
1205 | ds->ops->phylink_mac_link_down(ds, port, | |
1206 | MLO_AN_FIXED, PHY_INTERFACE_MODE_NA); | |
a20f9970 | 1207 | return dsa_port_phylink_register(dp); |
3be98b2d | 1208 | } |
a20f9970 AL |
1209 | return 0; |
1210 | } | |
0e279218 IC |
1211 | |
1212 | dev_warn(ds->dev, | |
1213 | "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n"); | |
1214 | ||
33615367 SR |
1215 | if (of_phy_is_fixed_link(dp->dn)) |
1216 | return dsa_port_fixed_link_register_of(dp); | |
1217 | else | |
1218 | return dsa_port_setup_phy_of(dp, true); | |
1219 | } | |
57ab1ca2 | 1220 | |
33615367 SR |
1221 | void dsa_port_link_unregister_of(struct dsa_port *dp) |
1222 | { | |
0e279218 IC |
1223 | struct dsa_switch *ds = dp->ds; |
1224 | ||
a20f9970 | 1225 | if (!ds->ops->adjust_link && dp->pl) { |
0e279218 IC |
1226 | rtnl_lock(); |
1227 | phylink_disconnect_phy(dp->pl); | |
1228 | rtnl_unlock(); | |
1229 | phylink_destroy(dp->pl); | |
a20f9970 | 1230 | dp->pl = NULL; |
0e279218 IC |
1231 | return; |
1232 | } | |
1233 | ||
33615367 SR |
1234 | if (of_phy_is_fixed_link(dp->dn)) |
1235 | of_phy_deregister_fixed_link(dp->dn); | |
1236 | else | |
1237 | dsa_port_setup_phy_of(dp, false); | |
57ab1ca2 | 1238 | } |
cf963573 FF |
1239 | |
1240 | int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data) | |
1241 | { | |
1242 | struct phy_device *phydev; | |
1243 | int ret = -EOPNOTSUPP; | |
1244 | ||
1245 | if (of_phy_is_fixed_link(dp->dn)) | |
1246 | return ret; | |
1247 | ||
1248 | phydev = dsa_port_get_phy_device(dp); | |
1249 | if (IS_ERR_OR_NULL(phydev)) | |
1250 | return ret; | |
1251 | ||
1252 | ret = phy_ethtool_get_strings(phydev, data); | |
1253 | put_device(&phydev->mdio.dev); | |
1254 | ||
1255 | return ret; | |
1256 | } | |
1257 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings); | |
1258 | ||
1259 | int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data) | |
1260 | { | |
1261 | struct phy_device *phydev; | |
1262 | int ret = -EOPNOTSUPP; | |
1263 | ||
1264 | if (of_phy_is_fixed_link(dp->dn)) | |
1265 | return ret; | |
1266 | ||
1267 | phydev = dsa_port_get_phy_device(dp); | |
1268 | if (IS_ERR_OR_NULL(phydev)) | |
1269 | return ret; | |
1270 | ||
1271 | ret = phy_ethtool_get_stats(phydev, NULL, data); | |
1272 | put_device(&phydev->mdio.dev); | |
1273 | ||
1274 | return ret; | |
1275 | } | |
1276 | EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats); | |
1277 | ||
1278 | int dsa_port_get_phy_sset_count(struct dsa_port *dp) | |
1279 | { | |
1280 | struct phy_device *phydev; | |
1281 | int ret = -EOPNOTSUPP; | |
1282 | ||
1283 | if (of_phy_is_fixed_link(dp->dn)) | |
1284 | return ret; | |
1285 | ||
1286 | phydev = dsa_port_get_phy_device(dp); | |
1287 | if (IS_ERR_OR_NULL(phydev)) | |
1288 | return ret; | |
1289 | ||
1290 | ret = phy_ethtool_get_sset_count(phydev); | |
1291 | put_device(&phydev->mdio.dev); | |
1292 | ||
1293 | return ret; | |
1294 | } | |
1295 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count); | |
18596f50 GM |
1296 | |
1297 | int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr) | |
1298 | { | |
1299 | struct dsa_notifier_hsr_info info = { | |
1300 | .sw_index = dp->ds->index, | |
1301 | .port = dp->index, | |
1302 | .hsr = hsr, | |
1303 | }; | |
1304 | int err; | |
1305 | ||
1306 | dp->hsr_dev = hsr; | |
1307 | ||
1308 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info); | |
1309 | if (err) | |
1310 | dp->hsr_dev = NULL; | |
1311 | ||
1312 | return err; | |
1313 | } | |
1314 | ||
1315 | void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr) | |
1316 | { | |
1317 | struct dsa_notifier_hsr_info info = { | |
1318 | .sw_index = dp->ds->index, | |
1319 | .port = dp->index, | |
1320 | .hsr = hsr, | |
1321 | }; | |
1322 | int err; | |
1323 | ||
1324 | dp->hsr_dev = NULL; | |
1325 | ||
1326 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info); | |
1327 | if (err) | |
ab97462b VO |
1328 | dev_err(dp->ds->dev, |
1329 | "port %d failed to notify DSA_NOTIFIER_HSR_LEAVE: %pe\n", | |
1330 | dp->index, ERR_PTR(err)); | |
18596f50 | 1331 | } |
c64b9c05 | 1332 | |
724395f4 | 1333 | int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid, bool broadcast) |
c64b9c05 VO |
1334 | { |
1335 | struct dsa_notifier_tag_8021q_vlan_info info = { | |
1336 | .tree_index = dp->ds->dst->index, | |
1337 | .sw_index = dp->ds->index, | |
1338 | .port = dp->index, | |
1339 | .vid = vid, | |
1340 | }; | |
1341 | ||
724395f4 VO |
1342 | if (broadcast) |
1343 | return dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info); | |
1344 | ||
1345 | return dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info); | |
c64b9c05 VO |
1346 | } |
1347 | ||
724395f4 | 1348 | void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid, bool broadcast) |
c64b9c05 VO |
1349 | { |
1350 | struct dsa_notifier_tag_8021q_vlan_info info = { | |
1351 | .tree_index = dp->ds->dst->index, | |
1352 | .sw_index = dp->ds->index, | |
1353 | .port = dp->index, | |
1354 | .vid = vid, | |
1355 | }; | |
1356 | int err; | |
1357 | ||
724395f4 VO |
1358 | if (broadcast) |
1359 | err = dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info); | |
1360 | else | |
1361 | err = dsa_port_notify(dp, DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info); | |
c64b9c05 | 1362 | if (err) |
ab97462b VO |
1363 | dev_err(dp->ds->dev, |
1364 | "port %d failed to notify tag_8021q VLAN %d deletion: %pe\n", | |
1365 | dp->index, vid, ERR_PTR(err)); | |
c64b9c05 | 1366 | } |