Commit | Line | Data |
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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 | ||
bae33f2b | 33 | int dsa_port_set_state(struct dsa_port *dp, u8 state) |
a40c175b VD |
34 | { |
35 | struct dsa_switch *ds = dp->ds; | |
36 | int port = dp->index; | |
37 | ||
bae33f2b VO |
38 | if (!ds->ops->port_stp_state_set) |
39 | return -EOPNOTSUPP; | |
a40c175b | 40 | |
bae33f2b | 41 | ds->ops->port_stp_state_set(ds, port, state); |
a40c175b VD |
42 | |
43 | if (ds->ops->port_fast_age) { | |
44 | /* Fast age FDB entries or flush appropriate forwarding database | |
45 | * for the given port, if we are moving it from Learning or | |
46 | * Forwarding state, to Disabled or Blocking or Listening state. | |
47 | */ | |
48 | ||
49 | if ((dp->stp_state == BR_STATE_LEARNING || | |
50 | dp->stp_state == BR_STATE_FORWARDING) && | |
51 | (state == BR_STATE_DISABLED || | |
52 | state == BR_STATE_BLOCKING || | |
53 | state == BR_STATE_LISTENING)) | |
54 | ds->ops->port_fast_age(ds, port); | |
55 | } | |
56 | ||
57 | dp->stp_state = state; | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
fb8a6a2b | 62 | static void dsa_port_set_state_now(struct dsa_port *dp, u8 state) |
a40c175b VD |
63 | { |
64 | int err; | |
65 | ||
bae33f2b | 66 | err = dsa_port_set_state(dp, state); |
a40c175b VD |
67 | if (err) |
68 | pr_err("DSA: failed to set STP state %u (%d)\n", state, err); | |
69 | } | |
cfbed329 | 70 | |
8640f8dc | 71 | int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) |
fb8a6a2b | 72 | { |
fb8a6a2b VD |
73 | struct dsa_switch *ds = dp->ds; |
74 | int port = dp->index; | |
75 | int err; | |
76 | ||
77 | if (ds->ops->port_enable) { | |
78 | err = ds->ops->port_enable(ds, port, phy); | |
79 | if (err) | |
80 | return err; | |
81 | } | |
82 | ||
9c2054a5 RK |
83 | if (!dp->bridge_dev) |
84 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING); | |
fb8a6a2b | 85 | |
8640f8dc RK |
86 | if (dp->pl) |
87 | phylink_start(dp->pl); | |
88 | ||
fb8a6a2b VD |
89 | return 0; |
90 | } | |
91 | ||
8640f8dc RK |
92 | int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy) |
93 | { | |
94 | int err; | |
95 | ||
96 | rtnl_lock(); | |
97 | err = dsa_port_enable_rt(dp, phy); | |
98 | rtnl_unlock(); | |
99 | ||
100 | return err; | |
101 | } | |
102 | ||
103 | void dsa_port_disable_rt(struct dsa_port *dp) | |
fb8a6a2b VD |
104 | { |
105 | struct dsa_switch *ds = dp->ds; | |
106 | int port = dp->index; | |
107 | ||
8640f8dc RK |
108 | if (dp->pl) |
109 | phylink_stop(dp->pl); | |
110 | ||
9c2054a5 RK |
111 | if (!dp->bridge_dev) |
112 | dsa_port_set_state_now(dp, BR_STATE_DISABLED); | |
fb8a6a2b VD |
113 | |
114 | if (ds->ops->port_disable) | |
75104db0 | 115 | ds->ops->port_disable(ds, port); |
fb8a6a2b VD |
116 | } |
117 | ||
8640f8dc RK |
118 | void dsa_port_disable(struct dsa_port *dp) |
119 | { | |
120 | rtnl_lock(); | |
121 | dsa_port_disable_rt(dp); | |
122 | rtnl_unlock(); | |
123 | } | |
124 | ||
5e38c158 VO |
125 | static void dsa_port_change_brport_flags(struct dsa_port *dp, |
126 | bool bridge_offload) | |
127 | { | |
e18f4c18 VO |
128 | struct switchdev_brport_flags flags; |
129 | int flag; | |
5e38c158 | 130 | |
e18f4c18 | 131 | flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD; |
5e38c158 | 132 | if (bridge_offload) |
e18f4c18 | 133 | flags.val = flags.mask; |
5e38c158 | 134 | else |
e18f4c18 | 135 | flags.val = flags.mask & ~BR_LEARNING; |
5e38c158 | 136 | |
e18f4c18 VO |
137 | for_each_set_bit(flag, &flags.mask, 32) { |
138 | struct switchdev_brport_flags tmp; | |
139 | ||
140 | tmp.val = flags.val & BIT(flag); | |
141 | tmp.mask = BIT(flag); | |
5e38c158 | 142 | |
a8b659e7 | 143 | dsa_port_bridge_flags(dp, tmp, NULL); |
5e38c158 VO |
144 | } |
145 | } | |
146 | ||
cfbed329 VD |
147 | int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br) |
148 | { | |
149 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 150 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
151 | .sw_index = dp->ds->index, |
152 | .port = dp->index, | |
153 | .br = br, | |
154 | }; | |
155 | int err; | |
156 | ||
5e38c158 VO |
157 | /* Notify the port driver to set its configurable flags in a way that |
158 | * matches the initial settings of a bridge port. | |
159 | */ | |
160 | dsa_port_change_brport_flags(dp, true); | |
c1388063 RK |
161 | |
162 | /* Here the interface is already bridged. Reflect the current | |
163 | * configuration so that drivers can program their chips accordingly. | |
cfbed329 VD |
164 | */ |
165 | dp->bridge_dev = br; | |
166 | ||
f66a6a69 | 167 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_JOIN, &info); |
cfbed329 VD |
168 | |
169 | /* The bridging is rolled back on error */ | |
c1388063 | 170 | if (err) { |
5e38c158 | 171 | dsa_port_change_brport_flags(dp, false); |
cfbed329 | 172 | dp->bridge_dev = NULL; |
c1388063 | 173 | } |
cfbed329 VD |
174 | |
175 | return err; | |
176 | } | |
177 | ||
178 | void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) | |
179 | { | |
180 | struct dsa_notifier_bridge_info info = { | |
f66a6a69 | 181 | .tree_index = dp->ds->dst->index, |
cfbed329 VD |
182 | .sw_index = dp->ds->index, |
183 | .port = dp->index, | |
184 | .br = br, | |
185 | }; | |
186 | int err; | |
187 | ||
188 | /* Here the port is already unbridged. Reflect the current configuration | |
189 | * so that drivers can program their chips accordingly. | |
190 | */ | |
191 | dp->bridge_dev = NULL; | |
192 | ||
f66a6a69 | 193 | err = dsa_broadcast(DSA_NOTIFIER_BRIDGE_LEAVE, &info); |
cfbed329 VD |
194 | if (err) |
195 | pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n"); | |
196 | ||
5e38c158 VO |
197 | /* Configure the port for standalone mode (no address learning, |
198 | * flood everything). | |
199 | * The bridge only emits SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS events | |
200 | * when the user requests it through netlink or sysfs, but not | |
201 | * automatically at port join or leave, so we need to handle resetting | |
202 | * the brport flags ourselves. But we even prefer it that way, because | |
203 | * otherwise, some setups might never get the notification they need, | |
204 | * for example, when a port leaves a LAG that offloads the bridge, | |
205 | * it becomes standalone, but as far as the bridge is concerned, no | |
206 | * port ever left. | |
207 | */ | |
208 | dsa_port_change_brport_flags(dp, false); | |
c1388063 | 209 | |
cfbed329 VD |
210 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, |
211 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
212 | */ | |
213 | dsa_port_set_state_now(dp, BR_STATE_FORWARDING); | |
214 | } | |
4d61d304 | 215 | |
058102a6 TW |
216 | int dsa_port_lag_change(struct dsa_port *dp, |
217 | struct netdev_lag_lower_state_info *linfo) | |
218 | { | |
219 | struct dsa_notifier_lag_info info = { | |
220 | .sw_index = dp->ds->index, | |
221 | .port = dp->index, | |
222 | }; | |
223 | bool tx_enabled; | |
224 | ||
225 | if (!dp->lag_dev) | |
226 | return 0; | |
227 | ||
228 | /* On statically configured aggregates (e.g. loadbalance | |
229 | * without LACP) ports will always be tx_enabled, even if the | |
230 | * link is down. Thus we require both link_up and tx_enabled | |
231 | * in order to include it in the tx set. | |
232 | */ | |
233 | tx_enabled = linfo->link_up && linfo->tx_enabled; | |
234 | ||
235 | if (tx_enabled == dp->lag_tx_enabled) | |
236 | return 0; | |
237 | ||
238 | dp->lag_tx_enabled = tx_enabled; | |
239 | ||
240 | return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info); | |
241 | } | |
242 | ||
243 | int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag, | |
244 | struct netdev_lag_upper_info *uinfo) | |
245 | { | |
246 | struct dsa_notifier_lag_info info = { | |
247 | .sw_index = dp->ds->index, | |
248 | .port = dp->index, | |
249 | .lag = lag, | |
250 | .info = uinfo, | |
251 | }; | |
252 | int err; | |
253 | ||
254 | dsa_lag_map(dp->ds->dst, lag); | |
255 | dp->lag_dev = lag; | |
256 | ||
257 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info); | |
258 | if (err) { | |
259 | dp->lag_dev = NULL; | |
260 | dsa_lag_unmap(dp->ds->dst, lag); | |
261 | } | |
262 | ||
263 | return err; | |
264 | } | |
265 | ||
266 | void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag) | |
267 | { | |
268 | struct dsa_notifier_lag_info info = { | |
269 | .sw_index = dp->ds->index, | |
270 | .port = dp->index, | |
271 | .lag = lag, | |
272 | }; | |
273 | int err; | |
274 | ||
275 | if (!dp->lag_dev) | |
276 | return; | |
277 | ||
278 | /* Port might have been part of a LAG that in turn was | |
279 | * attached to a bridge. | |
280 | */ | |
281 | if (dp->bridge_dev) | |
282 | dsa_port_bridge_leave(dp, dp->bridge_dev); | |
283 | ||
284 | dp->lag_tx_enabled = false; | |
285 | dp->lag_dev = NULL; | |
286 | ||
287 | err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); | |
288 | if (err) | |
289 | pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n", | |
290 | err); | |
291 | ||
292 | dsa_lag_unmap(dp->ds->dst, lag); | |
293 | } | |
294 | ||
adb256eb | 295 | /* Must be called under rcu_read_lock() */ |
8f5d16f6 VO |
296 | static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, |
297 | bool vlan_filtering) | |
298 | { | |
299 | struct dsa_switch *ds = dp->ds; | |
adb256eb VO |
300 | int err, i; |
301 | ||
302 | /* VLAN awareness was off, so the question is "can we turn it on". | |
303 | * We may have had 8021q uppers, those need to go. Make sure we don't | |
304 | * enter an inconsistent state: deny changing the VLAN awareness state | |
305 | * as long as we have 8021q uppers. | |
306 | */ | |
307 | if (vlan_filtering && dsa_is_user_port(ds, dp->index)) { | |
308 | struct net_device *upper_dev, *slave = dp->slave; | |
309 | struct net_device *br = dp->bridge_dev; | |
310 | struct list_head *iter; | |
311 | ||
312 | netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) { | |
313 | struct bridge_vlan_info br_info; | |
314 | u16 vid; | |
315 | ||
316 | if (!is_vlan_dev(upper_dev)) | |
317 | continue; | |
318 | ||
319 | vid = vlan_dev_vlan_id(upper_dev); | |
320 | ||
321 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the | |
322 | * device, respectively the VID is not found, returning | |
323 | * 0 means success, which is a failure for us here. | |
324 | */ | |
325 | err = br_vlan_get_info(br, vid, &br_info); | |
326 | if (err == 0) { | |
327 | dev_err(ds->dev, "Must remove upper %s first\n", | |
328 | upper_dev->name); | |
329 | return false; | |
330 | } | |
331 | } | |
332 | } | |
8f5d16f6 VO |
333 | |
334 | if (!ds->vlan_filtering_is_global) | |
335 | return true; | |
336 | ||
337 | /* For cases where enabling/disabling VLAN awareness is global to the | |
338 | * switch, we need to handle the case where multiple bridges span | |
339 | * different ports of the same switch device and one of them has a | |
340 | * different setting than what is being requested. | |
341 | */ | |
342 | for (i = 0; i < ds->num_ports; i++) { | |
343 | struct net_device *other_bridge; | |
344 | ||
345 | other_bridge = dsa_to_port(ds, i)->bridge_dev; | |
346 | if (!other_bridge) | |
347 | continue; | |
348 | /* If it's the same bridge, it also has same | |
349 | * vlan_filtering setting => no need to check | |
350 | */ | |
351 | if (other_bridge == dp->bridge_dev) | |
352 | continue; | |
353 | if (br_vlan_enabled(other_bridge) != vlan_filtering) { | |
354 | dev_err(ds->dev, "VLAN filtering is a global setting\n"); | |
355 | return false; | |
356 | } | |
357 | } | |
358 | return true; | |
359 | } | |
360 | ||
bae33f2b | 361 | int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering) |
4d61d304 VD |
362 | { |
363 | struct dsa_switch *ds = dp->ds; | |
bae33f2b | 364 | bool apply; |
33162e9a | 365 | int err; |
4d61d304 | 366 | |
bae33f2b VO |
367 | if (!ds->ops->port_vlan_filtering) |
368 | return -EOPNOTSUPP; | |
adb256eb | 369 | |
bae33f2b VO |
370 | /* We are called from dsa_slave_switchdev_blocking_event(), |
371 | * which is not under rcu_read_lock(), unlike | |
372 | * dsa_slave_switchdev_event(). | |
373 | */ | |
374 | rcu_read_lock(); | |
375 | apply = dsa_port_can_apply_vlan_filtering(dp, vlan_filtering); | |
376 | rcu_read_unlock(); | |
377 | if (!apply) | |
378 | return -EINVAL; | |
8f5d16f6 | 379 | |
ec9121e7 VO |
380 | if (dsa_port_is_vlan_filtering(dp) == vlan_filtering) |
381 | return 0; | |
382 | ||
bae33f2b | 383 | err = ds->ops->port_vlan_filtering(ds, dp->index, vlan_filtering); |
8f5d16f6 VO |
384 | if (err) |
385 | return err; | |
386 | ||
bae33f2b VO |
387 | if (ds->vlan_filtering_is_global) |
388 | ds->vlan_filtering = vlan_filtering; | |
389 | else | |
390 | dp->vlan_filtering = vlan_filtering; | |
2e554a7a | 391 | |
4d61d304 VD |
392 | return 0; |
393 | } | |
d87bd94e | 394 | |
54a0ed0d RK |
395 | /* This enforces legacy behavior for switch drivers which assume they can't |
396 | * receive VLAN configuration when enslaved to a bridge with vlan_filtering=0 | |
397 | */ | |
398 | bool dsa_port_skip_vlan_configuration(struct dsa_port *dp) | |
399 | { | |
400 | struct dsa_switch *ds = dp->ds; | |
401 | ||
402 | if (!dp->bridge_dev) | |
403 | return false; | |
404 | ||
405 | return (!ds->configure_vlan_while_not_filtering && | |
406 | !br_vlan_enabled(dp->bridge_dev)); | |
407 | } | |
408 | ||
bae33f2b | 409 | int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) |
d87bd94e VD |
410 | { |
411 | unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock); | |
412 | unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); | |
bae33f2b | 413 | struct dsa_notifier_ageing_time_info info; |
bae33f2b VO |
414 | int err; |
415 | ||
416 | info.ageing_time = ageing_time; | |
d87bd94e | 417 | |
bae33f2b VO |
418 | err = dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
419 | if (err) | |
420 | return err; | |
d87bd94e | 421 | |
d87bd94e | 422 | dp->ageing_time = ageing_time; |
d87bd94e | 423 | |
77b61365 | 424 | return 0; |
d87bd94e | 425 | } |
d1cffff0 | 426 | |
e18f4c18 | 427 | int dsa_port_pre_bridge_flags(const struct dsa_port *dp, |
a8b659e7 VO |
428 | struct switchdev_brport_flags flags, |
429 | struct netlink_ext_ack *extack) | |
ea87005a FF |
430 | { |
431 | struct dsa_switch *ds = dp->ds; | |
432 | ||
a8b659e7 | 433 | if (!ds->ops->port_pre_bridge_flags) |
ea87005a FF |
434 | return -EINVAL; |
435 | ||
a8b659e7 | 436 | return ds->ops->port_pre_bridge_flags(ds, dp->index, flags, extack); |
ea87005a FF |
437 | } |
438 | ||
e18f4c18 | 439 | int dsa_port_bridge_flags(const struct dsa_port *dp, |
a8b659e7 VO |
440 | struct switchdev_brport_flags flags, |
441 | struct netlink_ext_ack *extack) | |
57652796 RK |
442 | { |
443 | struct dsa_switch *ds = dp->ds; | |
57652796 | 444 | |
a8b659e7 VO |
445 | if (!ds->ops->port_bridge_flags) |
446 | return -EINVAL; | |
57652796 | 447 | |
a8b659e7 | 448 | return ds->ops->port_bridge_flags(ds, dp->index, flags, extack); |
57652796 RK |
449 | } |
450 | ||
a8b659e7 VO |
451 | int dsa_port_mrouter(struct dsa_port *dp, bool mrouter, |
452 | struct netlink_ext_ack *extack) | |
08cc83cc VD |
453 | { |
454 | struct dsa_switch *ds = dp->ds; | |
08cc83cc | 455 | |
a8b659e7 | 456 | if (!ds->ops->port_set_mrouter) |
bae33f2b | 457 | return -EOPNOTSUPP; |
08cc83cc | 458 | |
a8b659e7 | 459 | return ds->ops->port_set_mrouter(ds, dp->index, mrouter, extack); |
08cc83cc VD |
460 | } |
461 | ||
bfcb8132 VO |
462 | int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu, |
463 | bool propagate_upstream) | |
464 | { | |
465 | struct dsa_notifier_mtu_info info = { | |
466 | .sw_index = dp->ds->index, | |
467 | .propagate_upstream = propagate_upstream, | |
468 | .port = dp->index, | |
469 | .mtu = new_mtu, | |
470 | }; | |
471 | ||
472 | return dsa_port_notify(dp, DSA_NOTIFIER_MTU, &info); | |
473 | } | |
474 | ||
2acf4e6a AS |
475 | int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
476 | u16 vid) | |
d1cffff0 | 477 | { |
685fb6a4 VD |
478 | struct dsa_notifier_fdb_info info = { |
479 | .sw_index = dp->ds->index, | |
480 | .port = dp->index, | |
2acf4e6a AS |
481 | .addr = addr, |
482 | .vid = vid, | |
685fb6a4 | 483 | }; |
d1cffff0 | 484 | |
685fb6a4 | 485 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info); |
d1cffff0 VD |
486 | } |
487 | ||
2acf4e6a AS |
488 | int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, |
489 | u16 vid) | |
d1cffff0 | 490 | { |
685fb6a4 VD |
491 | struct dsa_notifier_fdb_info info = { |
492 | .sw_index = dp->ds->index, | |
493 | .port = dp->index, | |
2acf4e6a AS |
494 | .addr = addr, |
495 | .vid = vid, | |
496 | ||
685fb6a4 | 497 | }; |
d1cffff0 | 498 | |
685fb6a4 | 499 | return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info); |
d1cffff0 VD |
500 | } |
501 | ||
de40fc5d VD |
502 | int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data) |
503 | { | |
504 | struct dsa_switch *ds = dp->ds; | |
505 | int port = dp->index; | |
506 | ||
507 | if (!ds->ops->port_fdb_dump) | |
508 | return -EOPNOTSUPP; | |
509 | ||
510 | return ds->ops->port_fdb_dump(ds, port, cb, data); | |
511 | } | |
512 | ||
bb9f6031 | 513 | int dsa_port_mdb_add(const struct dsa_port *dp, |
ffb68fc5 | 514 | const struct switchdev_obj_port_mdb *mdb) |
3a9afea3 | 515 | { |
8ae5bcdc VD |
516 | struct dsa_notifier_mdb_info info = { |
517 | .sw_index = dp->ds->index, | |
518 | .port = dp->index, | |
8ae5bcdc VD |
519 | .mdb = mdb, |
520 | }; | |
3a9afea3 | 521 | |
8ae5bcdc | 522 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info); |
3a9afea3 VD |
523 | } |
524 | ||
bb9f6031 | 525 | int dsa_port_mdb_del(const struct dsa_port *dp, |
3a9afea3 VD |
526 | const struct switchdev_obj_port_mdb *mdb) |
527 | { | |
8ae5bcdc VD |
528 | struct dsa_notifier_mdb_info info = { |
529 | .sw_index = dp->ds->index, | |
530 | .port = dp->index, | |
531 | .mdb = mdb, | |
532 | }; | |
3a9afea3 | 533 | |
8ae5bcdc | 534 | return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info); |
3a9afea3 VD |
535 | } |
536 | ||
076e7133 | 537 | int dsa_port_vlan_add(struct dsa_port *dp, |
31046a5f VO |
538 | const struct switchdev_obj_port_vlan *vlan, |
539 | struct netlink_ext_ack *extack) | |
076e7133 | 540 | { |
d0c627b8 VD |
541 | struct dsa_notifier_vlan_info info = { |
542 | .sw_index = dp->ds->index, | |
543 | .port = dp->index, | |
d0c627b8 | 544 | .vlan = vlan, |
31046a5f | 545 | .extack = extack, |
d0c627b8 | 546 | }; |
076e7133 | 547 | |
c5335d73 | 548 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info); |
076e7133 VD |
549 | } |
550 | ||
551 | int dsa_port_vlan_del(struct dsa_port *dp, | |
552 | const struct switchdev_obj_port_vlan *vlan) | |
553 | { | |
d0c627b8 VD |
554 | struct dsa_notifier_vlan_info info = { |
555 | .sw_index = dp->ds->index, | |
556 | .port = dp->index, | |
557 | .vlan = vlan, | |
558 | }; | |
076e7133 | 559 | |
c5335d73 | 560 | return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info); |
076e7133 | 561 | } |
57ab1ca2 | 562 | |
53da0eba VO |
563 | void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp, |
564 | const struct dsa_device_ops *tag_ops) | |
565 | { | |
566 | cpu_dp->filter = tag_ops->filter; | |
567 | cpu_dp->rcv = tag_ops->rcv; | |
568 | cpu_dp->tag_ops = tag_ops; | |
569 | } | |
570 | ||
6207a78c | 571 | static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp) |
33615367 | 572 | { |
33615367 | 573 | struct device_node *phy_dn; |
33615367 | 574 | struct phy_device *phydev; |
33615367 | 575 | |
6207a78c | 576 | phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0); |
33615367 | 577 | if (!phy_dn) |
6207a78c | 578 | return NULL; |
33615367 SR |
579 | |
580 | phydev = of_phy_find_device(phy_dn); | |
581 | if (!phydev) { | |
6207a78c FF |
582 | of_node_put(phy_dn); |
583 | return ERR_PTR(-EPROBE_DEFER); | |
33615367 SR |
584 | } |
585 | ||
9919a363 | 586 | of_node_put(phy_dn); |
6207a78c FF |
587 | return phydev; |
588 | } | |
589 | ||
8ae67496 FF |
590 | static void dsa_port_phylink_validate(struct phylink_config *config, |
591 | unsigned long *supported, | |
592 | struct phylink_link_state *state) | |
77373d49 IC |
593 | { |
594 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
595 | struct dsa_switch *ds = dp->ds; | |
596 | ||
597 | if (!ds->ops->phylink_validate) | |
598 | return; | |
599 | ||
600 | ds->ops->phylink_validate(ds, dp->index, supported, state); | |
601 | } | |
77373d49 | 602 | |
8ae67496 FF |
603 | static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config, |
604 | struct phylink_link_state *state) | |
77373d49 IC |
605 | { |
606 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
607 | struct dsa_switch *ds = dp->ds; | |
87615c96 | 608 | int err; |
77373d49 | 609 | |
d46b7e4f RK |
610 | /* Only called for inband modes */ |
611 | if (!ds->ops->phylink_mac_link_state) { | |
612 | state->link = 0; | |
613 | return; | |
614 | } | |
77373d49 | 615 | |
87615c96 RK |
616 | err = ds->ops->phylink_mac_link_state(ds, dp->index, state); |
617 | if (err < 0) { | |
618 | dev_err(ds->dev, "p%d: phylink_mac_link_state() failed: %d\n", | |
619 | dp->index, err); | |
d46b7e4f | 620 | state->link = 0; |
87615c96 | 621 | } |
77373d49 | 622 | } |
77373d49 | 623 | |
8ae67496 FF |
624 | static void dsa_port_phylink_mac_config(struct phylink_config *config, |
625 | unsigned int mode, | |
626 | const struct phylink_link_state *state) | |
77373d49 IC |
627 | { |
628 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
629 | struct dsa_switch *ds = dp->ds; | |
630 | ||
631 | if (!ds->ops->phylink_mac_config) | |
632 | return; | |
633 | ||
634 | ds->ops->phylink_mac_config(ds, dp->index, mode, state); | |
635 | } | |
77373d49 | 636 | |
8ae67496 | 637 | static void dsa_port_phylink_mac_an_restart(struct phylink_config *config) |
77373d49 IC |
638 | { |
639 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
640 | struct dsa_switch *ds = dp->ds; | |
641 | ||
642 | if (!ds->ops->phylink_mac_an_restart) | |
643 | return; | |
644 | ||
645 | ds->ops->phylink_mac_an_restart(ds, dp->index); | |
646 | } | |
77373d49 | 647 | |
8ae67496 FF |
648 | static void dsa_port_phylink_mac_link_down(struct phylink_config *config, |
649 | unsigned int mode, | |
650 | phy_interface_t interface) | |
77373d49 IC |
651 | { |
652 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
0e279218 | 653 | struct phy_device *phydev = NULL; |
77373d49 IC |
654 | struct dsa_switch *ds = dp->ds; |
655 | ||
0e279218 IC |
656 | if (dsa_is_user_port(ds, dp->index)) |
657 | phydev = dp->slave->phydev; | |
658 | ||
77373d49 | 659 | if (!ds->ops->phylink_mac_link_down) { |
0e279218 IC |
660 | if (ds->ops->adjust_link && phydev) |
661 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
662 | return; |
663 | } | |
664 | ||
665 | ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); | |
666 | } | |
77373d49 | 667 | |
8ae67496 | 668 | static void dsa_port_phylink_mac_link_up(struct phylink_config *config, |
91a208f2 | 669 | struct phy_device *phydev, |
8ae67496 FF |
670 | unsigned int mode, |
671 | phy_interface_t interface, | |
91a208f2 RK |
672 | int speed, int duplex, |
673 | bool tx_pause, bool rx_pause) | |
77373d49 IC |
674 | { |
675 | struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); | |
77373d49 IC |
676 | struct dsa_switch *ds = dp->ds; |
677 | ||
678 | if (!ds->ops->phylink_mac_link_up) { | |
0e279218 IC |
679 | if (ds->ops->adjust_link && phydev) |
680 | ds->ops->adjust_link(ds, dp->index, phydev); | |
77373d49 IC |
681 | return; |
682 | } | |
683 | ||
5b502a7b RK |
684 | ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev, |
685 | speed, duplex, tx_pause, rx_pause); | |
77373d49 | 686 | } |
77373d49 IC |
687 | |
688 | const struct phylink_mac_ops dsa_port_phylink_mac_ops = { | |
689 | .validate = dsa_port_phylink_validate, | |
d46b7e4f | 690 | .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state, |
77373d49 IC |
691 | .mac_config = dsa_port_phylink_mac_config, |
692 | .mac_an_restart = dsa_port_phylink_mac_an_restart, | |
693 | .mac_link_down = dsa_port_phylink_mac_link_down, | |
694 | .mac_link_up = dsa_port_phylink_mac_link_up, | |
695 | }; | |
696 | ||
6207a78c FF |
697 | static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable) |
698 | { | |
699 | struct dsa_switch *ds = dp->ds; | |
700 | struct phy_device *phydev; | |
701 | int port = dp->index; | |
702 | int err = 0; | |
703 | ||
704 | phydev = dsa_port_get_phy_device(dp); | |
705 | if (!phydev) | |
706 | return 0; | |
707 | ||
708 | if (IS_ERR(phydev)) | |
709 | return PTR_ERR(phydev); | |
710 | ||
33615367 | 711 | if (enable) { |
33615367 SR |
712 | err = genphy_resume(phydev); |
713 | if (err < 0) | |
714 | goto err_put_dev; | |
715 | ||
716 | err = genphy_read_status(phydev); | |
717 | if (err < 0) | |
718 | goto err_put_dev; | |
719 | } else { | |
720 | err = genphy_suspend(phydev); | |
721 | if (err < 0) | |
722 | goto err_put_dev; | |
723 | } | |
724 | ||
725 | if (ds->ops->adjust_link) | |
726 | ds->ops->adjust_link(ds, port, phydev); | |
727 | ||
728 | dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev)); | |
729 | ||
730 | err_put_dev: | |
731 | put_device(&phydev->mdio.dev); | |
33615367 SR |
732 | return err; |
733 | } | |
734 | ||
735 | static int dsa_port_fixed_link_register_of(struct dsa_port *dp) | |
57ab1ca2 VD |
736 | { |
737 | struct device_node *dn = dp->dn; | |
738 | struct dsa_switch *ds = dp->ds; | |
739 | struct phy_device *phydev; | |
740 | int port = dp->index; | |
0c65b2b9 | 741 | phy_interface_t mode; |
57ab1ca2 VD |
742 | int err; |
743 | ||
33615367 SR |
744 | err = of_phy_register_fixed_link(dn); |
745 | if (err) { | |
746 | dev_err(ds->dev, | |
747 | "failed to register the fixed PHY of port %d\n", | |
748 | port); | |
749 | return err; | |
750 | } | |
57ab1ca2 | 751 | |
33615367 | 752 | phydev = of_phy_find_device(dn); |
57ab1ca2 | 753 | |
0c65b2b9 AL |
754 | err = of_get_phy_mode(dn, &mode); |
755 | if (err) | |
33615367 SR |
756 | mode = PHY_INTERFACE_MODE_NA; |
757 | phydev->interface = mode; | |
57ab1ca2 | 758 | |
33615367 | 759 | genphy_read_status(phydev); |
57ab1ca2 | 760 | |
33615367 SR |
761 | if (ds->ops->adjust_link) |
762 | ds->ops->adjust_link(ds, port, phydev); | |
57ab1ca2 | 763 | |
33615367 | 764 | put_device(&phydev->mdio.dev); |
57ab1ca2 VD |
765 | |
766 | return 0; | |
767 | } | |
768 | ||
0e279218 IC |
769 | static int dsa_port_phylink_register(struct dsa_port *dp) |
770 | { | |
771 | struct dsa_switch *ds = dp->ds; | |
772 | struct device_node *port_dn = dp->dn; | |
0c65b2b9 AL |
773 | phy_interface_t mode; |
774 | int err; | |
0e279218 | 775 | |
0c65b2b9 AL |
776 | err = of_get_phy_mode(port_dn, &mode); |
777 | if (err) | |
0e279218 IC |
778 | mode = PHY_INTERFACE_MODE_NA; |
779 | ||
780 | dp->pl_config.dev = ds->dev; | |
781 | dp->pl_config.type = PHYLINK_DEV; | |
787cac3f | 782 | dp->pl_config.pcs_poll = ds->pcs_poll; |
0e279218 IC |
783 | |
784 | dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), | |
785 | mode, &dsa_port_phylink_mac_ops); | |
786 | if (IS_ERR(dp->pl)) { | |
787 | pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); | |
788 | return PTR_ERR(dp->pl); | |
789 | } | |
790 | ||
791 | err = phylink_of_phy_connect(dp->pl, port_dn, 0); | |
2131fba5 | 792 | if (err && err != -ENODEV) { |
0e279218 IC |
793 | pr_err("could not attach to PHY: %d\n", err); |
794 | goto err_phy_connect; | |
795 | } | |
796 | ||
0e279218 IC |
797 | return 0; |
798 | ||
799 | err_phy_connect: | |
800 | phylink_destroy(dp->pl); | |
801 | return err; | |
802 | } | |
803 | ||
33615367 | 804 | int dsa_port_link_register_of(struct dsa_port *dp) |
57ab1ca2 | 805 | { |
0e279218 | 806 | struct dsa_switch *ds = dp->ds; |
a20f9970 | 807 | struct device_node *phy_np; |
3be98b2d | 808 | int port = dp->index; |
0e279218 | 809 | |
a20f9970 AL |
810 | if (!ds->ops->adjust_link) { |
811 | phy_np = of_parse_phandle(dp->dn, "phy-handle", 0); | |
3be98b2d AL |
812 | if (of_phy_is_fixed_link(dp->dn) || phy_np) { |
813 | if (ds->ops->phylink_mac_link_down) | |
814 | ds->ops->phylink_mac_link_down(ds, port, | |
815 | MLO_AN_FIXED, PHY_INTERFACE_MODE_NA); | |
a20f9970 | 816 | return dsa_port_phylink_register(dp); |
3be98b2d | 817 | } |
a20f9970 AL |
818 | return 0; |
819 | } | |
0e279218 IC |
820 | |
821 | dev_warn(ds->dev, | |
822 | "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n"); | |
823 | ||
33615367 SR |
824 | if (of_phy_is_fixed_link(dp->dn)) |
825 | return dsa_port_fixed_link_register_of(dp); | |
826 | else | |
827 | return dsa_port_setup_phy_of(dp, true); | |
828 | } | |
57ab1ca2 | 829 | |
33615367 SR |
830 | void dsa_port_link_unregister_of(struct dsa_port *dp) |
831 | { | |
0e279218 IC |
832 | struct dsa_switch *ds = dp->ds; |
833 | ||
a20f9970 | 834 | if (!ds->ops->adjust_link && dp->pl) { |
0e279218 IC |
835 | rtnl_lock(); |
836 | phylink_disconnect_phy(dp->pl); | |
837 | rtnl_unlock(); | |
838 | phylink_destroy(dp->pl); | |
a20f9970 | 839 | dp->pl = NULL; |
0e279218 IC |
840 | return; |
841 | } | |
842 | ||
33615367 SR |
843 | if (of_phy_is_fixed_link(dp->dn)) |
844 | of_phy_deregister_fixed_link(dp->dn); | |
845 | else | |
846 | dsa_port_setup_phy_of(dp, false); | |
57ab1ca2 | 847 | } |
cf963573 FF |
848 | |
849 | int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data) | |
850 | { | |
851 | struct phy_device *phydev; | |
852 | int ret = -EOPNOTSUPP; | |
853 | ||
854 | if (of_phy_is_fixed_link(dp->dn)) | |
855 | return ret; | |
856 | ||
857 | phydev = dsa_port_get_phy_device(dp); | |
858 | if (IS_ERR_OR_NULL(phydev)) | |
859 | return ret; | |
860 | ||
861 | ret = phy_ethtool_get_strings(phydev, data); | |
862 | put_device(&phydev->mdio.dev); | |
863 | ||
864 | return ret; | |
865 | } | |
866 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings); | |
867 | ||
868 | int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data) | |
869 | { | |
870 | struct phy_device *phydev; | |
871 | int ret = -EOPNOTSUPP; | |
872 | ||
873 | if (of_phy_is_fixed_link(dp->dn)) | |
874 | return ret; | |
875 | ||
876 | phydev = dsa_port_get_phy_device(dp); | |
877 | if (IS_ERR_OR_NULL(phydev)) | |
878 | return ret; | |
879 | ||
880 | ret = phy_ethtool_get_stats(phydev, NULL, data); | |
881 | put_device(&phydev->mdio.dev); | |
882 | ||
883 | return ret; | |
884 | } | |
885 | EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats); | |
886 | ||
887 | int dsa_port_get_phy_sset_count(struct dsa_port *dp) | |
888 | { | |
889 | struct phy_device *phydev; | |
890 | int ret = -EOPNOTSUPP; | |
891 | ||
892 | if (of_phy_is_fixed_link(dp->dn)) | |
893 | return ret; | |
894 | ||
895 | phydev = dsa_port_get_phy_device(dp); | |
896 | if (IS_ERR_OR_NULL(phydev)) | |
897 | return ret; | |
898 | ||
899 | ret = phy_ethtool_get_sset_count(phydev); | |
900 | put_device(&phydev->mdio.dev); | |
901 | ||
902 | return ret; | |
903 | } | |
904 | EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count); | |
18596f50 GM |
905 | |
906 | int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr) | |
907 | { | |
908 | struct dsa_notifier_hsr_info info = { | |
909 | .sw_index = dp->ds->index, | |
910 | .port = dp->index, | |
911 | .hsr = hsr, | |
912 | }; | |
913 | int err; | |
914 | ||
915 | dp->hsr_dev = hsr; | |
916 | ||
917 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_JOIN, &info); | |
918 | if (err) | |
919 | dp->hsr_dev = NULL; | |
920 | ||
921 | return err; | |
922 | } | |
923 | ||
924 | void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr) | |
925 | { | |
926 | struct dsa_notifier_hsr_info info = { | |
927 | .sw_index = dp->ds->index, | |
928 | .port = dp->index, | |
929 | .hsr = hsr, | |
930 | }; | |
931 | int err; | |
932 | ||
933 | dp->hsr_dev = NULL; | |
934 | ||
935 | err = dsa_port_notify(dp, DSA_NOTIFIER_HSR_LEAVE, &info); | |
936 | if (err) | |
937 | pr_err("DSA: failed to notify DSA_NOTIFIER_HSR_LEAVE\n"); | |
938 | } |