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 | ||
045c45d1 VO |
33 | static void dsa_port_fast_age(const struct dsa_port *dp) |
34 | { | |
35 | struct dsa_switch *ds = dp->ds; | |
36 | ||
37 | if (!ds->ops->port_fast_age) | |
38 | return; | |
39 | ||
40 | ds->ops->port_fast_age(ds, dp->index); | |
41 | } | |
42 | ||
39f32101 | 43 | int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age) |
a40c175b VD |
44 | { |
45 | struct dsa_switch *ds = dp->ds; | |
46 | int port = dp->index; | |
47 | ||
bae33f2b VO |
48 | if (!ds->ops->port_stp_state_set) |
49 | return -EOPNOTSUPP; | |
a40c175b | 50 | |
bae33f2b | 51 | ds->ops->port_stp_state_set(ds, port, state); |
a40c175b | 52 | |
4eab90d9 | 53 | if (do_fast_age && dp->learning) { |
a40c175b VD |
54 | /* Fast age FDB entries or flush appropriate forwarding database |
55 | * for the given port, if we are moving it from Learning or | |
56 | * Forwarding state, to Disabled or Blocking or Listening state. | |
39f32101 VO |
57 | * Ports that were standalone before the STP state change don't |
58 | * need to fast age the FDB, since address learning is off in | |
59 | * standalone mode. | |
a40c175b VD |
60 | */ |
61 | ||
62 | if ((dp->stp_state == BR_STATE_LEARNING || | |
63 | dp->stp_state == BR_STATE_FORWARDING) && | |
64 | (state == BR_STATE_DISABLED || | |
65 | state == BR_STATE_BLOCKING || | |
66 | state == BR_STATE_LISTENING)) | |
045c45d1 | 67 | dsa_port_fast_age(dp); |
a40c175b VD |
68 | } |
69 | ||
70 | dp->stp_state = state; | |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
39f32101 VO |
75 | static void dsa_port_set_state_now(struct dsa_port *dp, u8 state, |
76 | bool do_fast_age) | |
a40c175b VD |
77 | { |
78 | int err; | |
79 | ||
39f32101 | 80 | err = dsa_port_set_state(dp, state, do_fast_age); |
a40c175b VD |
81 | if (err) |
82 | pr_err("DSA: failed to set STP state %u (%d)\n", state, err); | |
83 | } | |
cfbed329 | 84 | |
8640f8dc | 85 | int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) |
fb8a6a2b | 86 | { |
fb8a6a2b VD |
87 | struct dsa_switch *ds = dp->ds; |
88 | int port = dp->index; | |
89 | int err; | |
90 | ||
91 | if (ds->ops->port_enable) { | |
92 | err = ds->ops->port_enable(ds, port, phy); | |
93 | if (err) | |
94 | return err; | |
95 | } | |
96 | ||
9c2054a5 | 97 | if (!dp->bridge_dev) |
39f32101 | 98 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING, false); |
fb8a6a2b | 99 | |
8640f8dc RK |
100 | if (dp->pl) |
101 | phylink_start(dp->pl); | |
102 | ||
fb8a6a2b VD |
103 | return 0; |
104 | } | |
105 | ||
8640f8dc RK |
106 | int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy) |
107 | { | |
108 | int err; | |
109 | ||
110 | rtnl_lock(); | |
111 | err = dsa_port_enable_rt(dp, phy); | |
112 | rtnl_unlock(); | |
113 | ||
114 | return err; | |
115 | } | |
116 | ||
117 | void dsa_port_disable_rt(struct dsa_port *dp) | |
fb8a6a2b VD |
118 | { |
119 | struct dsa_switch *ds = dp->ds; | |
120 | int port = dp->index; | |
121 | ||
8640f8dc RK |
122 | if (dp->pl) |
123 | phylink_stop(dp->pl); | |
124 | ||
9c2054a5 | 125 | if (!dp->bridge_dev) |
39f32101 | 126 | dsa_port_set_state_now(dp, BR_STATE_DISABLED, false); |
fb8a6a2b VD |
127 | |
128 | if (ds->ops->port_disable) | |
75104db0 | 129 | ds->ops->port_disable(ds, port); |
fb8a6a2b VD |
130 | } |
131 | ||
8640f8dc RK |
132 | void dsa_port_disable(struct dsa_port *dp) |
133 | { | |
134 | rtnl_lock(); | |
135 | dsa_port_disable_rt(dp); | |
136 | rtnl_unlock(); | |
137 | } | |
138 | ||
5961d6a1 VO |
139 | static int dsa_port_inherit_brport_flags(struct dsa_port *dp, |
140 | struct netlink_ext_ack *extack) | |
5e38c158 | 141 | { |
5961d6a1 VO |
142 | const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | |
143 | BR_BCAST_FLOOD; | |
144 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); | |
145 | int flag, err; | |
5e38c158 | 146 | |
5961d6a1 VO |
147 | for_each_set_bit(flag, &mask, 32) { |
148 | struct switchdev_brport_flags flags = {0}; | |
5e38c158 | 149 | |
5961d6a1 | 150 | flags.mask = BIT(flag); |
e18f4c18 | 151 | |
5961d6a1 VO |
152 | if (br_port_flag_is_set(brport_dev, BIT(flag))) |
153 | flags.val = BIT(flag); | |
5e38c158 | 154 | |
5961d6a1 VO |
155 | err = dsa_port_bridge_flags(dp, flags, extack); |
156 | if (err && err != -EOPNOTSUPP) | |
157 | return err; | |
158 | } | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | static void dsa_port_clear_brport_flags(struct dsa_port *dp) | |
164 | { | |
165 | const unsigned long val = BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD; | |
166 | const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | | |
167 | BR_BCAST_FLOOD; | |
168 | int flag, err; | |
169 | ||
170 | for_each_set_bit(flag, &mask, 32) { | |
171 | struct switchdev_brport_flags flags = {0}; | |
172 | ||
173 | flags.mask = BIT(flag); | |
174 | flags.val = val & BIT(flag); | |
175 | ||
176 | err = dsa_port_bridge_flags(dp, flags, NULL); | |
177 | if (err && err != -EOPNOTSUPP) | |
178 | dev_err(dp->ds->dev, | |
179 | "failed to clear bridge port flag %lu: %pe\n", | |
180 | flags.val, ERR_PTR(err)); | |
5e38c158 VO |
181 | } |
182 | } | |
183 | ||
4e51bf44 VO |
184 | static int dsa_port_switchdev_sync_attrs(struct dsa_port *dp, |
185 | struct netlink_ext_ack *extack) | |
5961d6a1 | 186 | { |
010e269f VO |
187 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); |
188 | struct net_device *br = dp->bridge_dev; | |
5961d6a1 VO |
189 | int err; |
190 | ||
191 | err = dsa_port_inherit_brport_flags(dp, extack); | |
192 | if (err) | |
193 | return err; | |
194 | ||
39f32101 | 195 | err = dsa_port_set_state(dp, br_port_get_stp_state(brport_dev), false); |
010e269f VO |
196 | if (err && err != -EOPNOTSUPP) |
197 | return err; | |
198 | ||
199 | err = dsa_port_vlan_filtering(dp, br_vlan_enabled(br), extack); | |
200 | if (err && err != -EOPNOTSUPP) | |
201 | return err; | |
202 | ||
010e269f VO |
203 | err = dsa_port_ageing_time(dp, br_get_ageing_time(br)); |
204 | if (err && err != -EOPNOTSUPP) | |
205 | return err; | |
206 | ||
74918945 VO |
207 | return 0; |
208 | } | |
209 | ||
210 | static void dsa_port_switchdev_unsync_attrs(struct dsa_port *dp) | |
5961d6a1 VO |
211 | { |
212 | /* Configure the port for standalone mode (no address learning, | |
213 | * flood everything). | |
214 | * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events | |
215 | * when the user requests it through netlink or sysfs, but not | |
216 | * automatically at port join or leave, so we need to handle resetting | |
217 | * the brport flags ourselves. But we even prefer it that way, because | |
218 | * otherwise, some setups might never get the notification they need, | |
219 | * for example, when a port leaves a LAG that offloads the bridge, | |
220 | * it becomes standalone, but as far as the bridge is concerned, no | |
221 | * port ever left. | |
222 | */ | |
223 | dsa_port_clear_brport_flags(dp); | |
224 | ||
225 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, | |
226 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
227 | */ | |
39f32101 | 228 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING, true); |
010e269f VO |
229 | |
230 | /* VLAN filtering is handled by dsa_switch_bridge_leave */ | |
231 | ||
010e269f VO |
232 | /* Ageing time may be global to the switch chip, so don't change it |
233 | * here because we have no good reason (or value) to change it to. | |
234 | */ | |
5961d6a1 VO |
235 | } |
236 | ||
123abc06 VO |
237 | static int dsa_tree_find_bridge_num(struct dsa_switch_tree *dst, |
238 | struct net_device *bridge_dev) | |
239 | { | |
240 | struct dsa_port *dp; | |
241 | ||
242 | /* When preparing the offload for a port, it will have a valid | |
243 | * dp->bridge_dev pointer but a not yet valid dp->bridge_num. | |
244 | * However there might be other ports having the same dp->bridge_dev | |
245 | * and a valid dp->bridge_num, so just ignore this port. | |
246 | */ | |
247 | list_for_each_entry(dp, &dst->ports, list) | |
248 | if (dp->bridge_dev == bridge_dev && dp->bridge_num != -1) | |
249 | return dp->bridge_num; | |
250 | ||
251 | return -1; | |
252 | } | |
253 | ||
254 | static void dsa_port_bridge_tx_fwd_unoffload(struct dsa_port *dp, | |
255 | struct net_device *bridge_dev) | |
256 | { | |
257 | struct dsa_switch_tree *dst = dp->ds->dst; | |
258 | int bridge_num = dp->bridge_num; | |
259 | struct dsa_switch *ds = dp->ds; | |
260 | ||
261 | /* No bridge TX forwarding offload => do nothing */ | |
262 | if (!ds->ops->port_bridge_tx_fwd_unoffload || dp->bridge_num == -1) | |
263 | return; | |
264 | ||
265 | dp->bridge_num = -1; | |
266 | ||
267 | /* Check if the bridge is still in use, otherwise it is time | |
268 | * to clean it up so we can reuse this bridge_num later. | |
269 | */ | |
270 | if (!dsa_tree_find_bridge_num(dst, bridge_dev)) | |
271 | clear_bit(bridge_num, &dst->fwd_offloading_bridges); | |
272 | ||
273 | /* Notify the chips only once the offload has been deactivated, so | |
274 | * that they can update their configuration accordingly. | |
275 | */ | |
276 | ds->ops->port_bridge_tx_fwd_unoffload(ds, dp->index, bridge_dev, | |
277 | bridge_num); | |
278 | } | |
279 | ||
280 | static bool dsa_port_bridge_tx_fwd_offload(struct dsa_port *dp, | |
281 | struct net_device *bridge_dev) | |
282 | { | |
283 | struct dsa_switch_tree *dst = dp->ds->dst; | |
284 | struct dsa_switch *ds = dp->ds; | |
285 | int bridge_num, err; | |
286 | ||
287 | if (!ds->ops->port_bridge_tx_fwd_offload) | |
288 | return false; | |
289 | ||
290 | bridge_num = dsa_tree_find_bridge_num(dst, bridge_dev); | |
291 | if (bridge_num < 0) { | |
292 | /* First port that offloads TX forwarding for this bridge */ | |
293 | bridge_num = find_first_zero_bit(&dst->fwd_offloading_bridges, | |
294 | DSA_MAX_NUM_OFFLOADING_BRIDGES); | |
295 | if (bridge_num >= ds->num_fwd_offloading_bridges) | |
296 | return false; | |
297 | ||
298 | set_bit(bridge_num, &dst->fwd_offloading_bridges); | |
299 | } | |
300 | ||
301 | dp->bridge_num = bridge_num; | |
302 | ||
303 | /* Notify the driver */ | |
304 | err = ds->ops->port_bridge_tx_fwd_offload(ds, dp->index, bridge_dev, | |
305 | bridge_num); | |
306 | if (err) { | |
307 | dsa_port_bridge_tx_fwd_unoffload(dp, bridge_dev); | |
308 | return false; | |
309 | } | |
310 | ||
311 | return true; | |
312 | } | |
313 | ||
2afc526a VO |
314 | int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br, |
315 | struct netlink_ext_ack *extack) | |
cfbed329 VD |
316 | { |
317 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 318 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
319 | .sw_index = dp->ds->index, |
320 | .port = dp->index, | |
321 | .br = br, | |
322 | }; | |
2f5dc00f VO |
323 | struct net_device *dev = dp->slave; |
324 | struct net_device *brport_dev; | |
123abc06 | 325 | bool tx_fwd_offload; |
cfbed329 VD |
326 | int err; |
327 | ||
c1388063 RK |
328 | /* Here the interface is already bridged. Reflect the current |
329 | * configuration so that drivers can program their chips accordingly. | |
cfbed329 VD |
330 | */ |
331 | dp->bridge_dev = br; | |
332 | ||
2f5dc00f VO |
333 | brport_dev = dsa_port_to_bridge_port(dp); |
334 | ||
f66a6a69 | 335 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info); |
5961d6a1 VO |
336 | if (err) |
337 | goto out_rollback; | |
cfbed329 | 338 | |
123abc06 VO |
339 | tx_fwd_offload = dsa_port_bridge_tx_fwd_offload(dp, br); |
340 | ||
4e51bf44 VO |
341 | err = switchdev_bridge_port_offload(brport_dev, dev, dp, |
342 | &dsa_slave_switchdev_notifier, | |
343 | &dsa_slave_switchdev_blocking_notifier, | |
123abc06 | 344 | tx_fwd_offload, extack); |
5961d6a1 VO |
345 | if (err) |
346 | goto out_rollback_unbridge; | |
347 | ||
4e51bf44 | 348 | err = dsa_port_switchdev_sync_attrs(dp, extack); |
2f5dc00f VO |
349 | if (err) |
350 | goto out_rollback_unoffload; | |
351 | ||
5961d6a1 | 352 | return 0; |
cfbed329 | 353 | |
2f5dc00f | 354 | out_rollback_unoffload: |
4e51bf44 VO |
355 | switchdev_bridge_port_unoffload(brport_dev, dp, |
356 | &dsa_slave_switchdev_notifier, | |
357 | &dsa_slave_switchdev_blocking_notifier); | |
5961d6a1 VO |
358 | out_rollback_unbridge: |
359 | dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); | |
360 | out_rollback: | |
361 | dp->bridge_dev = NULL; | |
cfbed329 VD |
362 | return err; |
363 | } | |
364 | ||
4e51bf44 | 365 | void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br) |
74918945 | 366 | { |
2f5dc00f VO |
367 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); |
368 | ||
4e51bf44 VO |
369 | switchdev_bridge_port_unoffload(brport_dev, dp, |
370 | &dsa_slave_switchdev_notifier, | |
371 | &dsa_slave_switchdev_blocking_notifier); | |
74918945 VO |
372 | } |
373 | ||
cfbed329 VD |
374 | void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) |
375 | { | |
376 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 377 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
378 | .sw_index = dp->ds->index, |
379 | .port = dp->index, | |
380 | .br = br, | |
381 | }; | |
382 | int err; | |
383 | ||
384 | /* Here the port is already unbridged. Reflect the current configuration | |
385 | * so that drivers can program their chips accordingly. | |
386 | */ | |
387 | dp->bridge_dev = NULL; | |
388 | ||
123abc06 VO |
389 | dsa_port_bridge_tx_fwd_unoffload(dp, br); |
390 | ||
f66a6a69 | 391 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); |
cfbed329 VD |
392 | if (err) |
393 | pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n"); | |
394 | ||
74918945 | 395 | dsa_port_switchdev_unsync_attrs(dp); |
cfbed329 | 396 | } |
4d61d304 | 397 | |
058102a6 TW |
398 | int dsa_port_lag_change(struct dsa_port *dp, |
399 | struct netdev_lag_lower_state_info *linfo) | |
400 | { | |
401 | struct dsa_notifier_lag_info info = { | |
402 | .sw_index = dp->ds->index, | |
403 | .port = dp->index, | |
404 | }; | |
405 | bool tx_enabled; | |
406 | ||
407 | if (!dp->lag_dev) | |
408 | return 0; | |
409 | ||
410 | /* On statically configured aggregates (e.g. loadbalance | |
411 | * without LACP) ports will always be tx_enabled, even if the | |
412 | * link is down. Thus we require both link_up and tx_enabled | |
413 | * in order to include it in the tx set. | |
414 | */ | |
415 | tx_enabled = linfo->link_up && linfo->tx_enabled; | |
416 | ||
417 | if (tx_enabled == dp->lag_tx_enabled) | |
418 | return 0; | |
419 | ||
420 | dp->lag_tx_enabled = tx_enabled; | |
421 | ||
422 | return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info); | |
423 | } | |
424 | ||
425 | int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag, | |
2afc526a VO |
426 | struct netdev_lag_upper_info *uinfo, |
427 | struct netlink_ext_ack *extack) | |
058102a6 TW |
428 | { |
429 | struct dsa_notifier_lag_info info = { | |
430 | .sw_index = dp->ds->index, | |
431 | .port = dp->index, | |
432 | .lag = lag, | |
433 | .info = uinfo, | |
434 | }; | |
185c9a76 | 435 | struct net_device *bridge_dev; |
058102a6 TW |
436 | int err; |
437 | ||
438 | dsa_lag_map(dp->ds->dst, lag); | |
439 | dp->lag_dev = lag; | |
440 | ||
441 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info); | |
185c9a76 VO |
442 | if (err) |
443 | goto err_lag_join; | |
058102a6 | 444 | |
185c9a76 VO |
445 | bridge_dev = netdev_master_upper_dev_get(lag); |
446 | if (!bridge_dev || !netif_is_bridge_master(bridge_dev)) | |
447 | return 0; | |
448 | ||
2afc526a | 449 | err = dsa_port_bridge_join(dp, bridge_dev, extack); |
185c9a76 VO |
450 | if (err) |
451 | goto err_bridge_join; | |
452 | ||
453 | return 0; | |
454 | ||
455 | err_bridge_join: | |
456 | dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); | |
457 | err_lag_join: | |
458 | dp->lag_dev = NULL; | |
459 | dsa_lag_unmap(dp->ds->dst, lag); | |
058102a6 TW |
460 | return err; |
461 | } | |
462 | ||
4e51bf44 | 463 | void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag) |
74918945 VO |
464 | { |
465 | if (dp->bridge_dev) | |
4e51bf44 | 466 | dsa_port_pre_bridge_leave(dp, dp->bridge_dev); |
74918945 VO |
467 | } |
468 | ||
058102a6 TW |
469 | void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag) |
470 | { | |
471 | struct dsa_notifier_lag_info info = { | |
472 | .sw_index = dp->ds->index, | |
473 | .port = dp->index, | |
474 | .lag = lag, | |
475 | }; | |
476 | int err; | |
477 | ||
478 | if (!dp->lag_dev) | |
479 | return; | |
480 | ||
481 | /* Port might have been part of a LAG that in turn was | |
482 | * attached to a bridge. | |
483 | */ | |
484 | if (dp->bridge_dev) | |
485 | dsa_port_bridge_leave(dp, dp->bridge_dev); | |
486 | ||
487 | dp->lag_tx_enabled = false; | |
488 | dp->lag_dev = NULL; | |
489 | ||
490 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); | |
491 | if (err) | |
492 | pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n", | |
493 | err); | |
494 | ||
495 | dsa_lag_unmap(dp->ds->dst, lag); | |
496 | } | |
497 | ||
adb256eb | 498 | /* Must be called under rcu_read_lock() */ |
8f5d16f6 | 499 | static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, |
89153ed6 VO |
500 | bool vlan_filtering, |
501 | struct netlink_ext_ack *extack) | |
8f5d16f6 VO |
502 | { |
503 | struct dsa_switch *ds = dp->ds; | |
adb256eb VO |
504 | int err, i; |
505 | ||
506 | /* VLAN awareness was off, so the question is "can we turn it on". | |
507 | * We may have had 8021q uppers, those need to go. Make sure we don't | |
508 | * enter an inconsistent state: deny changing the VLAN awareness state | |
509 | * as long as we have 8021q uppers. | |
510 | */ | |
511 | if (vlan_filtering && dsa_is_user_port(ds, dp->index)) { | |
512 | struct net_device *upper_dev, *slave = dp->slave; | |
513 | struct net_device *br = dp->bridge_dev; | |
514 | struct list_head *iter; | |
515 | ||
516 | netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) { | |
517 | struct bridge_vlan_info br_info; | |
518 | u16 vid; | |
519 | ||
520 | if (!is_vlan_dev(upper_dev)) | |
521 | continue; | |
522 | ||
523 | vid = vlan_dev_vlan_id(upper_dev); | |
524 | ||
525 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the | |
526 | * device, respectively the VID is not found, returning | |
527 | * 0 means success, which is a failure for us here. | |
528 | */ | |
529 | err = br_vlan_get_info(br, vid, &br_info); | |
530 | if (err == 0) { | |
89153ed6 VO |
531 | NL_SET_ERR_MSG_MOD(extack, |
532 | "Must first remove VLAN uppers having VIDs also present in bridge"); | |
adb256eb VO |
533 | return false; |
534 | } | |
535 | } | |
536 | } | |
8f5d16f6 VO |
537 | |
538 | if (!ds->vlan_filtering_is_global) | |
539 | return true; | |
540 | ||
541 | /* For cases where enabling/disabling VLAN awareness is global to the | |
542 | * switch, we need to handle the case where multiple bridges span | |
543 | * different ports of the same switch device and one of them has a | |
544 | * different setting than what is being requested. | |
545 | */ | |
546 | for (i = 0; i < ds->num_ports; i++) { | |
547 | struct net_device *other_bridge; | |
548 | ||
549 | other_bridge = dsa_to_port(ds, i)->bridge_dev; | |
550 | if (!other_bridge) | |
551 | continue; | |
552 | /* If it's the same bridge, it also has same | |
553 | * vlan_filtering setting => no need to check | |
554 | */ | |
555 | if (other_bridge == dp->bridge_dev) | |
556 | continue; | |
557 | if (br_vlan_enabled(other_bridge) != vlan_filtering) { | |
89153ed6 VO |
558 | NL_SET_ERR_MSG_MOD(extack, |
559 | "VLAN filtering is a global setting"); | |
8f5d16f6 VO |
560 | return false; |
561 | } | |
562 | } | |
563 | return true; | |
564 | } | |
565 | ||
89153ed6 VO |
566 | int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering, |
567 | struct netlink_ext_ack *extack) | |
4d61d304 VD |
568 | { |
569 | struct dsa_switch *ds = dp->ds; | |
bae33f2b | 570 | bool apply; |
33162e9a | 571 | int err; |
4d61d304 | 572 | |
bae33f2b VO |
573 | if (!ds->ops->port_vlan_filtering) |
574 | return -EOPNOTSUPP; | |
adb256eb | 575 | |
bae33f2b VO |
576 | /* We are called from dsa_slave_switchdev_blocking_event(), |
577 | * which is not under rcu_read_lock(), unlike | |
578 | * dsa_slave_switchdev_event(). | |
579 | */ | |
580 | rcu_read_lock(); | |
89153ed6 | 581 | apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering, extack); |
bae33f2b VO |
582 | rcu_read_unlock(); |
583 | if (!apply) | |
584 | return -EINVAL; | |
8f5d16f6 | 585 | |
ec9121e7 VO |
586 | if (dsa_port_is_vlan_filtering(dp) == vlan_filtering) |
587 | return 0; | |
588 | ||
89153ed6 VO |
589 | err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering, |
590 | extack); | |
8f5d16f6 VO |
591 | if (err) |
592 | return err; | |
593 | ||
bae33f2b VO |
594 | if (ds->vlan_filtering_is_global) |
595 | ds->vlan_filtering = vlan_filtering; | |
596 | else | |
597 | dp->vlan_filtering = vlan_filtering; | |
2e554a7a | 598 | |
4d61d304 VD |
599 | return 0; |
600 | } | |
d87bd94e | 601 | |
54a0ed0d RK |
602 | /* This enforces legacy behavior for switch drivers which assume they can't |
603 | * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0 | |
604 | */ | |
605 | bool dsa_port_skip_vlan_configuration(struct dsa_port *dp) | |
606 | { | |
607 | struct dsa_switch *ds = dp->ds; | |
608 | ||
609 | if (!dp->bridge_dev) | |
610 | return false; | |
611 | ||
612 | return (!ds->configure_vlan_while_not_filtering && | |
613 | !br_vlan_enabled(dp->bridge_dev)); | |
614 | } | |
615 | ||
bae33f2b | 616 | int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) |
d87bd94e VD |
617 | { |
618 | unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock); | |
619 | unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); | |
bae33f2b | 620 | struct dsa_notifier_ageing_time_info info; |
bae33f2b VO |
621 | int err; |
622 | ||
623 | info.ageing_time = ageing_time; | |
d87bd94e | 624 | |
bae33f2b VO |
625 | err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
626 | if (err) | |
627 | return err; | |
d87bd94e | 628 | |
d87bd94e | 629 | dp->ageing_time = ageing_time; |
d87bd94e | 630 | |
77b61365 | 631 | return 0; |
d87bd94e | 632 | } |
d1cffff0 | 633 | |
e18f4c18 | 634 | int dsa_port_pre_bridge_flags(const struct dsa_port *dp, |
a8b659e7 VO |
635 | struct switchdev_brport_flags flags, |
636 | struct netlink_ext_ack *extack) | |
ea87005a FF |
637 | { |
638 | struct dsa_switch *ds = dp->ds; | |
639 | ||
a8b659e7 | 640 | if (!ds->ops->port_pre_bridge_flags) |
ea87005a FF |
641 | return -EINVAL; |
642 | ||
a8b659e7 | 643 | return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack); |
ea87005a FF |
644 | } |
645 | ||
045c45d1 | 646 | int dsa_port_bridge_flags(struct dsa_port *dp, |
a8b659e7 VO |
647 | struct switchdev_brport_flags flags, |
648 | struct netlink_ext_ack *extack) | |
57652796 RK |
649 | { |
650 | struct dsa_switch *ds = dp->ds; | |
045c45d1 | 651 | int err; |
57652796 | 652 | |
a8b659e7 | 653 | if (!ds->ops->port_bridge_flags) |
70a7c484 | 654 | return -EOPNOTSUPP; |
57652796 | 655 | |
045c45d1 VO |
656 | err = ds->ops->port_bridge_flags(ds, dp->index, flags, extack); |
657 | if (err) | |
658 | return err; | |
659 | ||
660 | if (flags.mask & BR_LEARNING) { | |
661 | bool learning = flags.val & BR_LEARNING; | |
662 | ||
663 | if (learning == dp->learning) | |
664 | return 0; | |
665 | ||
666 | if (dp->learning && !learning) | |
667 | dsa_port_fast_age(dp); | |
668 | ||
669 | dp->learning = learning; | |
670 | } | |
671 | ||
672 | return 0; | |
57652796 RK |
673 | } |
674 | ||
bfcb8132 | 675 | int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu, |
88faba20 | 676 | bool targeted_match) |
bfcb8132 VO |
677 | { |
678 | struct dsa_notifier_mtu_info info = { | |
679 | .sw_index = dp->ds->index, | |
88faba20 | 680 | .targeted_match = targeted_match, |
bfcb8132 VO |
681 | .port = dp->index, |
682 | .mtu = new_mtu, | |
683 | }; | |
684 | ||
685 | return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info); | |
686 | } | |
687 | ||
2acf4e6a AS |
688 | int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
689 | u16 vid) | |
d1cffff0 | 690 | { |
685fb6a4 VD |
691 | struct dsa_notifier_fdb_info info = { |
692 | .sw_index = dp->ds->index, | |
693 | .port = dp->index, | |
2acf4e6a AS |
694 | .addr = addr, |
695 | .vid = vid, | |
685fb6a4 | 696 | }; |
d1cffff0 | 697 | |
685fb6a4 | 698 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info); |
d1cffff0 VD |
699 | } |
700 | ||
2acf4e6a AS |
701 | int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, |
702 | u16 vid) | |
d1cffff0 | 703 | { |
685fb6a4 VD |
704 | struct dsa_notifier_fdb_info info = { |
705 | .sw_index = dp->ds->index, | |
706 | .port = dp->index, | |
2acf4e6a AS |
707 | .addr = addr, |
708 | .vid = vid, | |
709 | ||
685fb6a4 | 710 | }; |
d1cffff0 | 711 | |
685fb6a4 | 712 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info); |
d1cffff0 VD |
713 | } |
714 | ||
3dc80afc VO |
715 | int dsa_port_host_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
716 | u16 vid) | |
717 | { | |
718 | struct dsa_notifier_fdb_info info = { | |
719 | .sw_index = dp->ds->index, | |
720 | .port = dp->index, | |
721 | .addr = addr, | |
722 | .vid = vid, | |
723 | }; | |
26ee7b06 VO |
724 | struct dsa_port *cpu_dp = dp->cpu_dp; |
725 | int err; | |
726 | ||
727 | err = dev_uc_add(cpu_dp->master, addr); | |
728 | if (err) | |
729 | return err; | |
3dc80afc VO |
730 | |
731 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_ADD, &info); | |
732 | } | |
733 | ||
734 | int dsa_port_host_fdb_del(struct dsa_port *dp, const unsigned char *addr, | |
735 | u16 vid) | |
736 | { | |
737 | struct dsa_notifier_fdb_info info = { | |
738 | .sw_index = dp->ds->index, | |
739 | .port = dp->index, | |
740 | .addr = addr, | |
741 | .vid = vid, | |
742 | }; | |
26ee7b06 VO |
743 | struct dsa_port *cpu_dp = dp->cpu_dp; |
744 | int err; | |
745 | ||
746 | err = dev_uc_del(cpu_dp->master, addr); | |
747 | if (err) | |
748 | return err; | |
3dc80afc VO |
749 | |
750 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_DEL, &info); | |
751 | } | |
752 | ||
de40fc5d VD |
753 | int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data) |
754 | { | |
755 | struct dsa_switch *ds = dp->ds; | |
756 | int port = dp->index; | |
757 | ||
758 | if (!ds->ops->port_fdb_dump) | |
759 | return -EOPNOTSUPP; | |
760 | ||
761 | return ds->ops->port_fdb_dump(ds, port, cb, data); | |
762 | } | |
763 | ||
bb9f6031 | 764 | int dsa_port_mdb_add(const struct dsa_port *dp, |
ffb68fc5 | 765 | const struct switchdev_obj_port_mdb *mdb) |
3a9afea3 | 766 | { |
8ae5bcdc VD |
767 | struct dsa_notifier_mdb_info info = { |
768 | .sw_index = dp->ds->index, | |
769 | .port = dp->index, | |
8ae5bcdc VD |
770 | .mdb = mdb, |
771 | }; | |
3a9afea3 | 772 | |
8ae5bcdc | 773 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info); |
3a9afea3 VD |
774 | } |
775 | ||
bb9f6031 | 776 | int dsa_port_mdb_del(const struct dsa_port *dp, |
3a9afea3 VD |
777 | const struct switchdev_obj_port_mdb *mdb) |
778 | { | |
8ae5bcdc VD |
779 | struct dsa_notifier_mdb_info info = { |
780 | .sw_index = dp->ds->index, | |
781 | .port = dp->index, | |
782 | .mdb = mdb, | |
783 | }; | |
3a9afea3 | 784 | |
8ae5bcdc | 785 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info); |
3a9afea3 VD |
786 | } |
787 | ||
b8e997c4 VO |
788 | int dsa_port_host_mdb_add(const struct dsa_port *dp, |
789 | const struct switchdev_obj_port_mdb *mdb) | |
790 | { | |
791 | struct dsa_notifier_mdb_info info = { | |
792 | .sw_index = dp->ds->index, | |
793 | .port = dp->index, | |
794 | .mdb = mdb, | |
795 | }; | |
26ee7b06 VO |
796 | struct dsa_port *cpu_dp = dp->cpu_dp; |
797 | int err; | |
798 | ||
799 | err = dev_mc_add(cpu_dp->master, mdb->addr); | |
800 | if (err) | |
801 | return err; | |
b8e997c4 VO |
802 | |
803 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_ADD, &info); | |
804 | } | |
805 | ||
806 | int dsa_port_host_mdb_del(const struct dsa_port *dp, | |
807 | const struct switchdev_obj_port_mdb *mdb) | |
808 | { | |
809 | struct dsa_notifier_mdb_info info = { | |
810 | .sw_index = dp->ds->index, | |
811 | .port = dp->index, | |
812 | .mdb = mdb, | |
813 | }; | |
26ee7b06 VO |
814 | struct dsa_port *cpu_dp = dp->cpu_dp; |
815 | int err; | |
816 | ||
817 | err = dev_mc_del(cpu_dp->master, mdb->addr); | |
818 | if (err) | |
819 | return err; | |
b8e997c4 VO |
820 | |
821 | return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_DEL, &info); | |
822 | } | |
823 | ||
076e7133 | 824 | int dsa_port_vlan_add(struct dsa_port *dp, |
31046a5f VO |
825 | const struct switchdev_obj_port_vlan *vlan, |
826 | struct netlink_ext_ack *extack) | |
076e7133 | 827 | { |
d0c627b8 VD |
828 | struct dsa_notifier_vlan_info info = { |
829 | .sw_index = dp->ds->index, | |
830 | .port = dp->index, | |
d0c627b8 | 831 | .vlan = vlan, |
31046a5f | 832 | .extack = extack, |
d0c627b8 | 833 | }; |
076e7133 | 834 | |
c5335d73 | 835 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info); |
076e7133 VD |
836 | } |
837 | ||
838 | int dsa_port_vlan_del(struct dsa_port *dp, | |
839 | const struct switchdev_obj_port_vlan *vlan) | |
840 | { | |
d0c627b8 VD |
841 | struct dsa_notifier_vlan_info info = { |
842 | .sw_index = dp->ds->index, | |
843 | .port = dp->index, | |
844 | .vlan = vlan, | |
845 | }; | |
076e7133 | 846 | |
c5335d73 | 847 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info); |
076e7133 | 848 | } |
57ab1ca2 | 849 | |
c595c433 HV |
850 | int dsa_port_mrp_add(const struct dsa_port *dp, |
851 | const struct switchdev_obj_mrp *mrp) | |
852 | { | |
853 | struct dsa_notifier_mrp_info info = { | |
854 | .sw_index = dp->ds->index, | |
855 | .port = dp->index, | |
856 | .mrp = mrp, | |
857 | }; | |
858 | ||
859 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD, &info); | |
860 | } | |
861 | ||
862 | int dsa_port_mrp_del(const struct dsa_port *dp, | |
863 | const struct switchdev_obj_mrp *mrp) | |
864 | { | |
865 | struct dsa_notifier_mrp_info info = { | |
866 | .sw_index = dp->ds->index, | |
867 | .port = dp->index, | |
868 | .mrp = mrp, | |
869 | }; | |
870 | ||
871 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL, &info); | |
872 | } | |
873 | ||
874 | int dsa_port_mrp_add_ring_role(const struct dsa_port *dp, | |
875 | const struct switchdev_obj_ring_role_mrp *mrp) | |
876 | { | |
877 | struct dsa_notifier_mrp_ring_role_info info = { | |
878 | .sw_index = dp->ds->index, | |
879 | .port = dp->index, | |
880 | .mrp = mrp, | |
881 | }; | |
882 | ||
883 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_ADD_RING_ROLE, &info); | |
884 | } | |
885 | ||
886 | int dsa_port_mrp_del_ring_role(const struct dsa_port *dp, | |
887 | const struct switchdev_obj_ring_role_mrp *mrp) | |
888 | { | |
889 | struct dsa_notifier_mrp_ring_role_info info = { | |
890 | .sw_index = dp->ds->index, | |
891 | .port = dp->index, | |
892 | .mrp = mrp, | |
893 | }; | |
894 | ||
895 | return dsa_port_notify(dp, DSA_NOTIFIER_MRP_DEL_RING_ROLE, &info); | |
896 | } | |
897 | ||
53da0eba VO |
898 | void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp, |
899 | const struct dsa_device_ops *tag_ops) | |
900 | { | |
53da0eba VO |
901 | cpu_dp->rcv = tag_ops->rcv; |
902 | cpu_dp->tag_ops = tag_ops; | |
903 | } | |
904 | ||
6207a78c | 905 | static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp) |
33615367 | 906 | { |
33615367 | 907 | struct device_node *phy_dn; |
33615367 | 908 | struct phy_device *phydev; |
33615367 | 909 | |
6207a78c | 910 | phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0); |
33615367 | 911 | if (!phy_dn) |
6207a78c | 912 | return NULL; |
33615367 SR |
913 | |
914 | phydev = of_phy_find_device(phy_dn); | |
915 | if (!phydev) { | |
6207a78c FF |
916 | of_node_put(phy_dn); |
917 | return ERR_PTR(-EPROBE_DEFER); | |
33615367 SR |
918 | } |
919 | ||
9919a363 | 920 | of_node_put(phy_dn); |
6207a78c FF |
921 | return phydev; |
922 | } | |
923 | ||
8ae67496 FF |
924 | static void dsa_port_phylink_validate(struct phylink_config *config, |
925 | unsigned long *supported, | |
926 | struct phylink_link_state *state) | |
77373d49 IC |
927 | { |
928 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
929 | struct dsa_switch *ds = dp->ds; | |
930 | ||
931 | if (!ds->ops->phylink_validate) | |
932 | return; | |
933 | ||
934 | ds->ops->phylink_validate(ds, dp->index, supported, state); | |
935 | } | |
77373d49 | 936 | |
8ae67496 FF |
937 | static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config, |
938 | struct phylink_link_state *state) | |
77373d49 IC |
939 | { |
940 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
941 | struct dsa_switch *ds = dp->ds; | |
87615c96 | 942 | int err; |
77373d49 | 943 | |
d46b7e4f RK |
944 | /* Only called for inband modes */ |
945 | if (!ds->ops->phylink_mac_link_state) { | |
946 | state->link = 0; | |
947 | return; | |
948 | } | |
77373d49 | 949 | |
87615c96 RK |
950 | err = ds->ops->phylink_mac_link_state(ds, dp->index, state); |
951 | if (err < 0) { | |
952 | dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n", | |
953 | dp->index, err); | |
d46b7e4f | 954 | state->link = 0; |
87615c96 | 955 | } |
77373d49 | 956 | } |
77373d49 | 957 | |
8ae67496 FF |
958 | static void dsa_port_phylink_mac_config(struct phylink_config *config, |
959 | unsigned int mode, | |
960 | const struct phylink_link_state *state) | |
77373d49 IC |
961 | { |
962 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
963 | struct dsa_switch *ds = dp->ds; | |
964 | ||
965 | if (!ds->ops->phylink_mac_config) | |
966 | return; | |
967 | ||
968 | ds->ops->phylink_mac_config(ds, dp->index, mode, state); | |
969 | } | |
77373d49 | 970 | |
8ae67496 | 971 | static void dsa_port_phylink_mac_an_restart(struct phylink_config *config) |
77373d49 IC |
972 | { |
973 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
974 | struct dsa_switch *ds = dp->ds; | |
975 | ||
976 | if (!ds->ops->phylink_mac_an_restart) | |
977 | return; | |
978 | ||
979 | ds->ops->phylink_mac_an_restart(ds, dp->index); | |
980 | } | |
77373d49 | 981 | |
8ae67496 FF |
982 | static void dsa_port_phylink_mac_link_down(struct phylink_config *config, |
983 | unsigned int mode, | |
984 | phy_interface_t interface) | |
77373d49 IC |
985 | { |
986 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
0e279218 | 987 | struct phy_device *phydev = NULL; |
77373d49 IC |
988 | struct dsa_switch *ds = dp->ds; |
989 | ||
0e279218 IC |
990 | if (dsa_is_user_port(ds, dp->index)) |
991 | phydev = dp->slave->phydev; | |
992 | ||
77373d49 | 993 | if (!ds->ops->phylink_mac_link_down) { |
0e279218 IC |
994 | if (ds->ops->adjust_link && phydev) |
995 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
996 | return; |
997 | } | |
998 | ||
999 | ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); | |
1000 | } | |
77373d49 | 1001 | |
8ae67496 | 1002 | static void dsa_port_phylink_mac_link_up(struct phylink_config *config, |
91a208f2 | 1003 | struct phy_device *phydev, |
8ae67496 FF |
1004 | unsigned int mode, |
1005 | phy_interface_t interface, | |
91a208f2 RK |
1006 | int speed, int duplex, |
1007 | bool tx_pause, bool rx_pause) | |
77373d49 IC |
1008 | { |
1009 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
77373d49 IC |
1010 | struct dsa_switch *ds = dp->ds; |
1011 | ||
1012 | if (!ds->ops->phylink_mac_link_up) { | |
0e279218 IC |
1013 | if (ds->ops->adjust_link && phydev) |
1014 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
1015 | return; |
1016 | } | |
1017 | ||
5b502a7b RK |
1018 | ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev, |
1019 | speed, duplex, tx_pause, rx_pause); | |
77373d49 | 1020 | } |
77373d49 IC |
1021 | |
1022 | const struct phylink_mac_ops dsa_port_phylink_mac_ops = { | |
1023 | .validate = dsa_port_phylink_validate, | |
d46b7e4f | 1024 | .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state, |
77373d49 IC |
1025 | .mac_config = dsa_port_phylink_mac_config, |
1026 | .mac_an_restart = dsa_port_phylink_mac_an_restart, | |
1027 | .mac_link_down = dsa_port_phylink_mac_link_down, | |
1028 | .mac_link_up = dsa_port_phylink_mac_link_up, | |
1029 | }; | |
1030 | ||
6207a78c FF |
1031 | static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable) |
1032 | { | |
1033 | struct dsa_switch *ds = dp->ds; | |
1034 | struct phy_device *phydev; | |
1035 | int port = dp->index; | |
1036 | int err = 0; | |
1037 | ||
1038 | phydev = dsa_port_get_phy_device(dp); | |
1039 | if (!phydev) | |
1040 | return 0; | |
1041 | ||
1042 | if (IS_ERR(phydev)) | |
1043 | return PTR_ERR(phydev); | |
1044 | ||
33615367 | 1045 | if (enable) { |
33615367 SR |
1046 | err = genphy_resume(phydev); |
1047 | if (err < 0) | |
1048 | goto err_put_dev; | |
1049 | ||
1050 | err = genphy_read_status(phydev); | |
1051 | if (err < 0) | |
1052 | goto err_put_dev; | |
1053 | } else { | |
1054 | err = genphy_suspend(phydev); | |
1055 | if (err < 0) | |
1056 | goto err_put_dev; | |
1057 | } | |
1058 | ||
1059 | if (ds->ops->adjust_link) | |
1060 | ds->ops->adjust_link(ds, port, phydev); | |
1061 | ||
1062 | dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev)); | |
1063 | ||
1064 | err_put_dev: | |
1065 | put_device(&phydev->mdio.dev); | |
33615367 SR |
1066 | return err; |
1067 | } | |
1068 | ||
1069 | static int dsa_port_fixed_link_register_of(struct dsa_port *dp) | |
57ab1ca2 VD |
1070 | { |
1071 | struct device_node *dn = dp->dn; | |
1072 | struct dsa_switch *ds = dp->ds; | |
1073 | struct phy_device *phydev; | |
1074 | int port = dp->index; | |
0c65b2b9 | 1075 | phy_interface_t mode; |
57ab1ca2 VD |
1076 | int err; |
1077 | ||
33615367 SR |
1078 | err = of_phy_register_fixed_link(dn); |
1079 | if (err) { | |
1080 | dev_err(ds->dev, | |
1081 | "failed to register the fixed PHY of port %d\n", | |
1082 | port); | |
1083 | return err; | |
1084 | } | |
57ab1ca2 | 1085 | |
33615367 | 1086 | phydev = of_phy_find_device(dn); |
57ab1ca2 | 1087 | |
0c65b2b9 AL |
1088 | err = of_get_phy_mode(dn, &mode); |
1089 | if (err) | |
33615367 SR |
1090 | mode = PHY_INTERFACE_MODE_NA; |
1091 | phydev->interface = mode; | |
57ab1ca2 | 1092 | |
33615367 | 1093 | genphy_read_status(phydev); |
57ab1ca2 | 1094 | |
33615367 SR |
1095 | if (ds->ops->adjust_link) |
1096 | ds->ops->adjust_link(ds, port, phydev); | |
57ab1ca2 | 1097 | |
33615367 | 1098 | put_device(&phydev->mdio.dev); |
57ab1ca2 VD |
1099 | |
1100 | return 0; | |
1101 | } | |
1102 | ||
0e279218 IC |
1103 | static int dsa_port_phylink_register(struct dsa_port *dp) |
1104 | { | |
1105 | struct dsa_switch *ds = dp->ds; | |
1106 | struct device_node *port_dn = dp->dn; | |
0c65b2b9 AL |
1107 | phy_interface_t mode; |
1108 | int err; | |
0e279218 | 1109 | |
0c65b2b9 AL |
1110 | err = of_get_phy_mode(port_dn, &mode); |
1111 | if (err) | |
0e279218 IC |
1112 | mode = PHY_INTERFACE_MODE_NA; |
1113 | ||
1114 | dp->pl_config.dev = ds->dev; | |
1115 | dp->pl_config.type = PHYLINK_DEV; | |
787cac3f | 1116 | dp->pl_config.pcs_poll = ds->pcs_poll; |
0e279218 IC |
1117 | |
1118 | dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), | |
1119 | mode, &dsa_port_phylink_mac_ops); | |
1120 | if (IS_ERR(dp->pl)) { | |
1121 | pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); | |
1122 | return PTR_ERR(dp->pl); | |
1123 | } | |
1124 | ||
1125 | err = phylink_of_phy_connect(dp->pl, port_dn, 0); | |
2131fba5 | 1126 | if (err && err != -ENODEV) { |
0e279218 IC |
1127 | pr_err("could not attach to PHY: %d\n", err); |
1128 | goto err_phy_connect; | |
1129 | } | |
1130 | ||
0e279218 IC |
1131 | return 0; |
1132 | ||
1133 | err_phy_connect: | |
1134 | phylink_destroy(dp->pl); | |
1135 | return err; | |
1136 | } | |
1137 | ||
33615367 | 1138 | int dsa_port_link_register_of(struct dsa_port *dp) |
57ab1ca2 | 1139 | { |
0e279218 | 1140 | struct dsa_switch *ds = dp->ds; |
a20f9970 | 1141 | struct device_node *phy_np; |
3be98b2d | 1142 | int port = dp->index; |
0e279218 | 1143 | |
a20f9970 AL |
1144 | if (!ds->ops->adjust_link) { |
1145 | phy_np = of_parse_phandle(dp->dn, "phy-handle", 0); | |
3be98b2d AL |
1146 | if (of_phy_is_fixed_link(dp->dn) || phy_np) { |
1147 | if (ds->ops->phylink_mac_link_down) | |
1148 | ds->ops->phylink_mac_link_down(ds, port, | |
1149 | MLO_AN_FIXED, PHY_INTERFACE_MODE_NA); | |
a20f9970 | 1150 | return dsa_port_phylink_register(dp); |
3be98b2d | 1151 | } |
a20f9970 AL |
1152 | return 0; |
1153 | } | |
0e279218 IC |
1154 | |
1155 | dev_warn(ds->dev, | |
1156 | "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n"); | |
1157 | ||
33615367 SR |
1158 | if (of_phy_is_fixed_link(dp->dn)) |
1159 | return dsa_port_fixed_link_register_of(dp); | |
1160 | else | |
1161 | return dsa_port_setup_phy_of(dp, true); | |
1162 | } | |
57ab1ca2 | 1163 | |
33615367 SR |
1164 | void dsa_port_link_unregister_of(struct dsa_port *dp) |
1165 | { | |
0e279218 IC |
1166 | struct dsa_switch *ds = dp->ds; |
1167 | ||
a20f9970 | 1168 | if (!ds->ops->adjust_link && dp->pl) { |
0e279218 IC |
1169 | rtnl_lock(); |
1170 | phylink_disconnect_phy(dp->pl); | |
1171 | rtnl_unlock(); | |
1172 | phylink_destroy(dp->pl); | |
a20f9970 | 1173 | dp->pl = NULL; |
0e279218 IC |
1174 | return; |
1175 | } | |
1176 | ||
33615367 SR |
1177 | if (of_phy_is_fixed_link(dp->dn)) |
1178 | of_phy_deregister_fixed_link(dp->dn); | |
1179 | else | |
1180 | dsa_port_setup_phy_of(dp, false); | |
57ab1ca2 | 1181 | } |
cf963573 FF |
1182 | |
1183 | int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data) | |
1184 | { | |
1185 | struct phy_device *phydev; | |
1186 | int ret = -EOPNOTSUPP; | |
1187 | ||
1188 | if (of_phy_is_fixed_link(dp->dn)) | |
1189 | return ret; | |
1190 | ||
1191 | phydev = dsa_port_get_phy_device(dp); | |
1192 | if (IS_ERR_OR_NULL(phydev)) | |
1193 | return ret; | |
1194 | ||
1195 | ret = phy_ethtool_get_strings(phydev, data); | |
1196 | put_device(&phydev->mdio.dev); | |
1197 | ||
1198 | return ret; | |
1199 | } | |
1200 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings); | |
1201 | ||
1202 | int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data) | |
1203 | { | |
1204 | struct phy_device *phydev; | |
1205 | int ret = -EOPNOTSUPP; | |
1206 | ||
1207 | if (of_phy_is_fixed_link(dp->dn)) | |
1208 | return ret; | |
1209 | ||
1210 | phydev = dsa_port_get_phy_device(dp); | |
1211 | if (IS_ERR_OR_NULL(phydev)) | |
1212 | return ret; | |
1213 | ||
1214 | ret = phy_ethtool_get_stats(phydev, NULL, data); | |
1215 | put_device(&phydev->mdio.dev); | |
1216 | ||
1217 | return ret; | |
1218 | } | |
1219 | EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats); | |
1220 | ||
1221 | int dsa_port_get_phy_sset_count(struct dsa_port *dp) | |
1222 | { | |
1223 | struct phy_device *phydev; | |
1224 | int ret = -EOPNOTSUPP; | |
1225 | ||
1226 | if (of_phy_is_fixed_link(dp->dn)) | |
1227 | return ret; | |
1228 | ||
1229 | phydev = dsa_port_get_phy_device(dp); | |
1230 | if (IS_ERR_OR_NULL(phydev)) | |
1231 | return ret; | |
1232 | ||
1233 | ret = phy_ethtool_get_sset_count(phydev); | |
1234 | put_device(&phydev->mdio.dev); | |
1235 | ||
1236 | return ret; | |
1237 | } | |
1238 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count); | |
18596f50 GM |
1239 | |
1240 | int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr) | |
1241 | { | |
1242 | struct dsa_notifier_hsr_info info = { | |
1243 | .sw_index = dp->ds->index, | |
1244 | .port = dp->index, | |
1245 | .hsr = hsr, | |
1246 | }; | |
1247 | int err; | |
1248 | ||
1249 | dp->hsr_dev = hsr; | |
1250 | ||
1251 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info); | |
1252 | if (err) | |
1253 | dp->hsr_dev = NULL; | |
1254 | ||
1255 | return err; | |
1256 | } | |
1257 | ||
1258 | void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr) | |
1259 | { | |
1260 | struct dsa_notifier_hsr_info info = { | |
1261 | .sw_index = dp->ds->index, | |
1262 | .port = dp->index, | |
1263 | .hsr = hsr, | |
1264 | }; | |
1265 | int err; | |
1266 | ||
1267 | dp->hsr_dev = NULL; | |
1268 | ||
1269 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info); | |
1270 | if (err) | |
1271 | pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n"); | |
1272 | } | |
c64b9c05 VO |
1273 | |
1274 | int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid) | |
1275 | { | |
1276 | struct dsa_notifier_tag_8021q_vlan_info info = { | |
1277 | .tree_index = dp->ds->dst->index, | |
1278 | .sw_index = dp->ds->index, | |
1279 | .port = dp->index, | |
1280 | .vid = vid, | |
1281 | }; | |
1282 | ||
1283 | return dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, &info); | |
1284 | } | |
1285 | ||
1286 | void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid) | |
1287 | { | |
1288 | struct dsa_notifier_tag_8021q_vlan_info info = { | |
1289 | .tree_index = dp->ds->dst->index, | |
1290 | .sw_index = dp->ds->index, | |
1291 | .port = dp->index, | |
1292 | .vid = vid, | |
1293 | }; | |
1294 | int err; | |
1295 | ||
1296 | err = dsa_broadcast(DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, &info); | |
1297 | if (err) | |
1298 | pr_err("DSA: failed to notify tag_8021q VLAN deletion: %pe\n", | |
1299 | ERR_PTR(err)); | |
1300 | } |