1// SPDX-License-Identifier: (GPL-2.0 OR MIT)
2/* Microsemi Ocelot Switch driver
3 *
4 * This contains glue logic between the switchdev driver operations and the
5 * mscc_ocelot_switch_lib.
6 *
7 * Copyright (c) 2017, 2019 Microsemi Corporation
8 * Copyright 2020-2021 NXP
9 */
10
11#include <linux/dsa/ocelot.h>
12#include <linux/if_bridge.h>
13#include <linux/of_net.h>
14#include <linux/phy/phy.h>
15#include <net/pkt_cls.h>
16#include "ocelot.h"
17#include "ocelot_police.h"
18#include "ocelot_vcap.h"
19#include "ocelot_fdma.h"
20
21#define OCELOT_MAC_QUIRKS OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP
22
23struct ocelot_dump_ctx {
24 struct net_device *dev;
25 struct sk_buff *skb;
26 struct netlink_callback *cb;
27 int idx;
28};
29
30static bool ocelot_netdevice_dev_check(const struct net_device *dev);
31
32static struct ocelot *devlink_port_to_ocelot(struct devlink_port *dlp)
33{
34 return devlink_priv(devlink: dlp->devlink);
35}
36
37static int devlink_port_to_port(struct devlink_port *dlp)
38{
39 struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
40
41 return dlp - ocelot->devlink_ports;
42}
43
44static int ocelot_devlink_sb_pool_get(struct devlink *dl,
45 unsigned int sb_index, u16 pool_index,
46 struct devlink_sb_pool_info *pool_info)
47{
48 struct ocelot *ocelot = devlink_priv(devlink: dl);
49
50 return ocelot_sb_pool_get(ocelot, sb_index, pool_index, pool_info);
51}
52
53static int ocelot_devlink_sb_pool_set(struct devlink *dl, unsigned int sb_index,
54 u16 pool_index, u32 size,
55 enum devlink_sb_threshold_type threshold_type,
56 struct netlink_ext_ack *extack)
57{
58 struct ocelot *ocelot = devlink_priv(devlink: dl);
59
60 return ocelot_sb_pool_set(ocelot, sb_index, pool_index, size,
61 threshold_type, extack);
62}
63
64static int ocelot_devlink_sb_port_pool_get(struct devlink_port *dlp,
65 unsigned int sb_index, u16 pool_index,
66 u32 *p_threshold)
67{
68 struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
69 int port = devlink_port_to_port(dlp);
70
71 return ocelot_sb_port_pool_get(ocelot, port, sb_index, pool_index,
72 p_threshold);
73}
74
75static int ocelot_devlink_sb_port_pool_set(struct devlink_port *dlp,
76 unsigned int sb_index, u16 pool_index,
77 u32 threshold,
78 struct netlink_ext_ack *extack)
79{
80 struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
81 int port = devlink_port_to_port(dlp);
82
83 return ocelot_sb_port_pool_set(ocelot, port, sb_index, pool_index,
84 threshold, extack);
85}
86
87static int
88ocelot_devlink_sb_tc_pool_bind_get(struct devlink_port *dlp,
89 unsigned int sb_index, u16 tc_index,
90 enum devlink_sb_pool_type pool_type,
91 u16 *p_pool_index, u32 *p_threshold)
92{
93 struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
94 int port = devlink_port_to_port(dlp);
95
96 return ocelot_sb_tc_pool_bind_get(ocelot, port, sb_index, tc_index,
97 pool_type, p_pool_index,
98 p_threshold);
99}
100
101static int
102ocelot_devlink_sb_tc_pool_bind_set(struct devlink_port *dlp,
103 unsigned int sb_index, u16 tc_index,
104 enum devlink_sb_pool_type pool_type,
105 u16 pool_index, u32 threshold,
106 struct netlink_ext_ack *extack)
107{
108 struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
109 int port = devlink_port_to_port(dlp);
110
111 return ocelot_sb_tc_pool_bind_set(ocelot, port, sb_index, tc_index,
112 pool_type, pool_index, threshold,
113 extack);
114}
115
116static int ocelot_devlink_sb_occ_snapshot(struct devlink *dl,
117 unsigned int sb_index)
118{
119 struct ocelot *ocelot = devlink_priv(devlink: dl);
120
121 return ocelot_sb_occ_snapshot(ocelot, sb_index);
122}
123
124static int ocelot_devlink_sb_occ_max_clear(struct devlink *dl,
125 unsigned int sb_index)
126{
127 struct ocelot *ocelot = devlink_priv(devlink: dl);
128
129 return ocelot_sb_occ_max_clear(ocelot, sb_index);
130}
131
132static int ocelot_devlink_sb_occ_port_pool_get(struct devlink_port *dlp,
133 unsigned int sb_index,
134 u16 pool_index, u32 *p_cur,
135 u32 *p_max)
136{
137 struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
138 int port = devlink_port_to_port(dlp);
139
140 return ocelot_sb_occ_port_pool_get(ocelot, port, sb_index, pool_index,
141 p_cur, p_max);
142}
143
144static int
145ocelot_devlink_sb_occ_tc_port_bind_get(struct devlink_port *dlp,
146 unsigned int sb_index, u16 tc_index,
147 enum devlink_sb_pool_type pool_type,
148 u32 *p_cur, u32 *p_max)
149{
150 struct ocelot *ocelot = devlink_port_to_ocelot(dlp);
151 int port = devlink_port_to_port(dlp);
152
153 return ocelot_sb_occ_tc_port_bind_get(ocelot, port, sb_index,
154 tc_index, pool_type,
155 p_cur, p_max);
156}
157
158const struct devlink_ops ocelot_devlink_ops = {
159 .sb_pool_get = ocelot_devlink_sb_pool_get,
160 .sb_pool_set = ocelot_devlink_sb_pool_set,
161 .sb_port_pool_get = ocelot_devlink_sb_port_pool_get,
162 .sb_port_pool_set = ocelot_devlink_sb_port_pool_set,
163 .sb_tc_pool_bind_get = ocelot_devlink_sb_tc_pool_bind_get,
164 .sb_tc_pool_bind_set = ocelot_devlink_sb_tc_pool_bind_set,
165 .sb_occ_snapshot = ocelot_devlink_sb_occ_snapshot,
166 .sb_occ_max_clear = ocelot_devlink_sb_occ_max_clear,
167 .sb_occ_port_pool_get = ocelot_devlink_sb_occ_port_pool_get,
168 .sb_occ_tc_port_bind_get = ocelot_devlink_sb_occ_tc_port_bind_get,
169};
170
171int ocelot_port_devlink_init(struct ocelot *ocelot, int port,
172 enum devlink_port_flavour flavour)
173{
174 struct devlink_port *dlp = &ocelot->devlink_ports[port];
175 int id_len = sizeof(ocelot->base_mac);
176 struct devlink *dl = ocelot->devlink;
177 struct devlink_port_attrs attrs = {};
178
179 memset(dlp, 0, sizeof(*dlp));
180 memcpy(attrs.switch_id.id, &ocelot->base_mac, id_len);
181 attrs.switch_id.id_len = id_len;
182 attrs.phys.port_number = port;
183 attrs.flavour = flavour;
184
185 devlink_port_attrs_set(devlink_port: dlp, devlink_port_attrs: &attrs);
186
187 return devlink_port_register(devlink: dl, devlink_port: dlp, port_index: port);
188}
189
190void ocelot_port_devlink_teardown(struct ocelot *ocelot, int port)
191{
192 struct devlink_port *dlp = &ocelot->devlink_ports[port];
193
194 devlink_port_unregister(devlink_port: dlp);
195}
196
197int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
198 struct flow_cls_offload *f,
199 bool ingress)
200{
201 struct ocelot *ocelot = priv->port.ocelot;
202 int port = priv->port.index;
203
204 if (!ingress)
205 return -EOPNOTSUPP;
206
207 switch (f->command) {
208 case FLOW_CLS_REPLACE:
209 return ocelot_cls_flower_replace(ocelot, port, f, ingress);
210 case FLOW_CLS_DESTROY:
211 return ocelot_cls_flower_destroy(ocelot, port, f, ingress);
212 case FLOW_CLS_STATS:
213 return ocelot_cls_flower_stats(ocelot, port, f, ingress);
214 default:
215 return -EOPNOTSUPP;
216 }
217}
218
219static int ocelot_setup_tc_cls_matchall_police(struct ocelot_port_private *priv,
220 struct tc_cls_matchall_offload *f,
221 bool ingress,
222 struct netlink_ext_ack *extack)
223{
224 struct flow_action_entry *action = &f->rule->action.entries[0];
225 struct ocelot *ocelot = priv->port.ocelot;
226 struct ocelot_policer pol = { 0 };
227 int port = priv->port.index;
228 int err;
229
230 if (!ingress) {
231 NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported");
232 return -EOPNOTSUPP;
233 }
234
235 if (priv->tc.police_id && priv->tc.police_id != f->cookie) {
236 NL_SET_ERR_MSG_MOD(extack,
237 "Only one policer per port is supported");
238 return -EEXIST;
239 }
240
241 err = ocelot_policer_validate(action: &f->rule->action, a: action, extack);
242 if (err)
243 return err;
244
245 pol.rate = (u32)div_u64(dividend: action->police.rate_bytes_ps, divisor: 1000) * 8;
246 pol.burst = action->police.burst;
247
248 err = ocelot_port_policer_add(ocelot, port, pol: &pol);
249 if (err) {
250 NL_SET_ERR_MSG_MOD(extack, "Could not add policer");
251 return err;
252 }
253
254 priv->tc.police_id = f->cookie;
255 priv->tc.offload_cnt++;
256
257 return 0;
258}
259
260static int ocelot_setup_tc_cls_matchall_mirred(struct ocelot_port_private *priv,
261 struct tc_cls_matchall_offload *f,
262 bool ingress,
263 struct netlink_ext_ack *extack)
264{
265 struct flow_action *action = &f->rule->action;
266 struct ocelot *ocelot = priv->port.ocelot;
267 struct ocelot_port_private *other_priv;
268 const struct flow_action_entry *a;
269 int err;
270
271 if (f->common.protocol != htons(ETH_P_ALL))
272 return -EOPNOTSUPP;
273
274 if (!flow_action_basic_hw_stats_check(action, extack))
275 return -EOPNOTSUPP;
276
277 a = &action->entries[0];
278 if (!a->dev)
279 return -EINVAL;
280
281 if (!ocelot_netdevice_dev_check(dev: a->dev)) {
282 NL_SET_ERR_MSG_MOD(extack,
283 "Destination not an ocelot port");
284 return -EOPNOTSUPP;
285 }
286
287 other_priv = netdev_priv(dev: a->dev);
288
289 err = ocelot_port_mirror_add(ocelot, from: priv->port.index,
290 to: other_priv->port.index, ingress, extack);
291 if (err)
292 return err;
293
294 if (ingress)
295 priv->tc.ingress_mirred_id = f->cookie;
296 else
297 priv->tc.egress_mirred_id = f->cookie;
298 priv->tc.offload_cnt++;
299
300 return 0;
301}
302
303static int ocelot_del_tc_cls_matchall_police(struct ocelot_port_private *priv,
304 struct netlink_ext_ack *extack)
305{
306 struct ocelot *ocelot = priv->port.ocelot;
307 int port = priv->port.index;
308 int err;
309
310 err = ocelot_port_policer_del(ocelot, port);
311 if (err) {
312 NL_SET_ERR_MSG_MOD(extack,
313 "Could not delete policer");
314 return err;
315 }
316
317 priv->tc.police_id = 0;
318 priv->tc.offload_cnt--;
319
320 return 0;
321}
322
323static int ocelot_del_tc_cls_matchall_mirred(struct ocelot_port_private *priv,
324 bool ingress,
325 struct netlink_ext_ack *extack)
326{
327 struct ocelot *ocelot = priv->port.ocelot;
328 int port = priv->port.index;
329
330 ocelot_port_mirror_del(ocelot, from: port, ingress);
331
332 if (ingress)
333 priv->tc.ingress_mirred_id = 0;
334 else
335 priv->tc.egress_mirred_id = 0;
336 priv->tc.offload_cnt--;
337
338 return 0;
339}
340
341static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv,
342 struct tc_cls_matchall_offload *f,
343 bool ingress)
344{
345 struct netlink_ext_ack *extack = f->common.extack;
346 struct flow_action_entry *action;
347
348 switch (f->command) {
349 case TC_CLSMATCHALL_REPLACE:
350 if (!flow_offload_has_one_action(action: &f->rule->action)) {
351 NL_SET_ERR_MSG_MOD(extack,
352 "Only one action is supported");
353 return -EOPNOTSUPP;
354 }
355
356 if (priv->tc.block_shared) {
357 NL_SET_ERR_MSG_MOD(extack,
358 "Matchall offloads not supported on shared blocks");
359 return -EOPNOTSUPP;
360 }
361
362 action = &f->rule->action.entries[0];
363
364 switch (action->id) {
365 case FLOW_ACTION_POLICE:
366 return ocelot_setup_tc_cls_matchall_police(priv, f,
367 ingress,
368 extack);
369 break;
370 case FLOW_ACTION_MIRRED:
371 return ocelot_setup_tc_cls_matchall_mirred(priv, f,
372 ingress,
373 extack);
374 default:
375 NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
376 return -EOPNOTSUPP;
377 }
378
379 break;
380 case TC_CLSMATCHALL_DESTROY:
381 action = &f->rule->action.entries[0];
382
383 if (f->cookie == priv->tc.police_id)
384 return ocelot_del_tc_cls_matchall_police(priv, extack);
385 else if (f->cookie == priv->tc.ingress_mirred_id ||
386 f->cookie == priv->tc.egress_mirred_id)
387 return ocelot_del_tc_cls_matchall_mirred(priv, ingress,
388 extack);
389 else
390 return -ENOENT;
391
392 break;
393 case TC_CLSMATCHALL_STATS:
394 default:
395 return -EOPNOTSUPP;
396 }
397}
398
399static int ocelot_setup_tc_block_cb(enum tc_setup_type type,
400 void *type_data,
401 void *cb_priv, bool ingress)
402{
403 struct ocelot_port_private *priv = cb_priv;
404
405 if (!tc_cls_can_offload_and_chain0(dev: priv->dev, common: type_data))
406 return -EOPNOTSUPP;
407
408 switch (type) {
409 case TC_SETUP_CLSMATCHALL:
410 return ocelot_setup_tc_cls_matchall(priv, f: type_data, ingress);
411 case TC_SETUP_CLSFLOWER:
412 return ocelot_setup_tc_cls_flower(priv, f: type_data, ingress);
413 default:
414 return -EOPNOTSUPP;
415 }
416}
417
418static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type,
419 void *type_data,
420 void *cb_priv)
421{
422 return ocelot_setup_tc_block_cb(type, type_data,
423 cb_priv, ingress: true);
424}
425
426static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type,
427 void *type_data,
428 void *cb_priv)
429{
430 return ocelot_setup_tc_block_cb(type, type_data,
431 cb_priv, ingress: false);
432}
433
434static LIST_HEAD(ocelot_block_cb_list);
435
436static int ocelot_setup_tc_block(struct ocelot_port_private *priv,
437 struct flow_block_offload *f)
438{
439 struct flow_block_cb *block_cb;
440 flow_setup_cb_t *cb;
441
442 if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) {
443 cb = ocelot_setup_tc_block_cb_ig;
444 priv->tc.block_shared = f->block_shared;
445 } else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) {
446 cb = ocelot_setup_tc_block_cb_eg;
447 } else {
448 return -EOPNOTSUPP;
449 }
450
451 f->driver_block_list = &ocelot_block_cb_list;
452
453 switch (f->command) {
454 case FLOW_BLOCK_BIND:
455 if (flow_block_cb_is_busy(cb, cb_ident: priv, driver_block_list: &ocelot_block_cb_list))
456 return -EBUSY;
457
458 block_cb = flow_block_cb_alloc(cb, cb_ident: priv, cb_priv: priv, NULL);
459 if (IS_ERR(ptr: block_cb))
460 return PTR_ERR(ptr: block_cb);
461
462 flow_block_cb_add(block_cb, offload: f);
463 list_add_tail(new: &block_cb->driver_list, head: f->driver_block_list);
464 return 0;
465 case FLOW_BLOCK_UNBIND:
466 block_cb = flow_block_cb_lookup(block: f->block, cb, cb_ident: priv);
467 if (!block_cb)
468 return -ENOENT;
469
470 flow_block_cb_remove(block_cb, offload: f);
471 list_del(entry: &block_cb->driver_list);
472 return 0;
473 default:
474 return -EOPNOTSUPP;
475 }
476}
477
478static int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type,
479 void *type_data)
480{
481 struct ocelot_port_private *priv = netdev_priv(dev);
482
483 switch (type) {
484 case TC_SETUP_BLOCK:
485 return ocelot_setup_tc_block(priv, f: type_data);
486 default:
487 return -EOPNOTSUPP;
488 }
489 return 0;
490}
491
492static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
493 bool untagged)
494{
495 struct ocelot_port_private *priv = netdev_priv(dev);
496 struct ocelot_port *ocelot_port = &priv->port;
497 struct ocelot *ocelot = ocelot_port->ocelot;
498 int port = priv->port.index;
499 int ret;
500
501 ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged);
502 if (ret)
503 return ret;
504
505 /* Add the port MAC address to with the right VLAN information */
506 ocelot_mact_learn(ocelot, PGID_CPU, mac: dev->dev_addr, vid,
507 type: ENTRYTYPE_LOCKED);
508
509 return 0;
510}
511
512static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)
513{
514 struct ocelot_port_private *priv = netdev_priv(dev);
515 struct ocelot *ocelot = priv->port.ocelot;
516 int port = priv->port.index;
517 int ret;
518
519 /* 8021q removes VID 0 on module unload for all interfaces
520 * with VLAN filtering feature. We need to keep it to receive
521 * untagged traffic.
522 */
523 if (vid == OCELOT_STANDALONE_PVID)
524 return 0;
525
526 ret = ocelot_vlan_del(ocelot, port, vid);
527 if (ret)
528 return ret;
529
530 /* Del the port MAC address to with the right VLAN information */
531 ocelot_mact_forget(ocelot, mac: dev->dev_addr, vid);
532
533 return 0;
534}
535
536static int ocelot_port_open(struct net_device *dev)
537{
538 struct ocelot_port_private *priv = netdev_priv(dev);
539
540 phylink_start(priv->phylink);
541
542 return 0;
543}
544
545static int ocelot_port_stop(struct net_device *dev)
546{
547 struct ocelot_port_private *priv = netdev_priv(dev);
548
549 phylink_stop(priv->phylink);
550
551 return 0;
552}
553
554static netdev_tx_t ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
555{
556 struct ocelot_port_private *priv = netdev_priv(dev);
557 struct ocelot_port *ocelot_port = &priv->port;
558 struct ocelot *ocelot = ocelot_port->ocelot;
559 int port = priv->port.index;
560 u32 rew_op = 0;
561
562 if (!static_branch_unlikely(&ocelot_fdma_enabled) &&
563 !ocelot_can_inject(ocelot, grp: 0))
564 return NETDEV_TX_BUSY;
565
566 /* Check if timestamping is needed */
567 if (ocelot->ptp && (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
568 struct sk_buff *clone = NULL;
569
570 if (ocelot_port_txtstamp_request(ocelot, port, skb, clone: &clone)) {
571 kfree_skb(skb);
572 return NETDEV_TX_OK;
573 }
574
575 if (clone)
576 OCELOT_SKB_CB(skb)->clone = clone;
577
578 rew_op = ocelot_ptp_rew_op(skb);
579 }
580
581 if (static_branch_unlikely(&ocelot_fdma_enabled)) {
582 ocelot_fdma_inject_frame(fdma: ocelot, port, rew_op, skb, dev);
583 } else {
584 ocelot_port_inject_frame(ocelot, port, grp: 0, rew_op, skb);
585
586 consume_skb(skb);
587 }
588
589 return NETDEV_TX_OK;
590}
591
592enum ocelot_action_type {
593 OCELOT_MACT_LEARN,
594 OCELOT_MACT_FORGET,
595};
596
597struct ocelot_mact_work_ctx {
598 struct work_struct work;
599 struct ocelot *ocelot;
600 enum ocelot_action_type type;
601 union {
602 /* OCELOT_MACT_LEARN */
603 struct {
604 unsigned char addr[ETH_ALEN];
605 u16 vid;
606 enum macaccess_entry_type entry_type;
607 int pgid;
608 } learn;
609 /* OCELOT_MACT_FORGET */
610 struct {
611 unsigned char addr[ETH_ALEN];
612 u16 vid;
613 } forget;
614 };
615};
616
617#define ocelot_work_to_ctx(x) \
618 container_of((x), struct ocelot_mact_work_ctx, work)
619
620static void ocelot_mact_work(struct work_struct *work)
621{
622 struct ocelot_mact_work_ctx *w = ocelot_work_to_ctx(work);
623 struct ocelot *ocelot = w->ocelot;
624
625 switch (w->type) {
626 case OCELOT_MACT_LEARN:
627 ocelot_mact_learn(ocelot, port: w->learn.pgid, mac: w->learn.addr,
628 vid: w->learn.vid, type: w->learn.entry_type);
629 break;
630 case OCELOT_MACT_FORGET:
631 ocelot_mact_forget(ocelot, mac: w->forget.addr, vid: w->forget.vid);
632 break;
633 default:
634 break;
635 }
636
637 kfree(objp: w);
638}
639
640static int ocelot_enqueue_mact_action(struct ocelot *ocelot,
641 const struct ocelot_mact_work_ctx *ctx)
642{
643 struct ocelot_mact_work_ctx *w = kmemdup(p: ctx, size: sizeof(*w), GFP_ATOMIC);
644
645 if (!w)
646 return -ENOMEM;
647
648 w->ocelot = ocelot;
649 INIT_WORK(&w->work, ocelot_mact_work);
650 queue_work(wq: ocelot->owq, work: &w->work);
651
652 return 0;
653}
654
655static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr)
656{
657 struct ocelot_port_private *priv = netdev_priv(dev);
658 struct ocelot_port *ocelot_port = &priv->port;
659 struct ocelot *ocelot = ocelot_port->ocelot;
660 struct ocelot_mact_work_ctx w;
661
662 ether_addr_copy(dst: w.forget.addr, src: addr);
663 w.forget.vid = OCELOT_STANDALONE_PVID;
664 w.type = OCELOT_MACT_FORGET;
665
666 return ocelot_enqueue_mact_action(ocelot, ctx: &w);
667}
668
669static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr)
670{
671 struct ocelot_port_private *priv = netdev_priv(dev);
672 struct ocelot_port *ocelot_port = &priv->port;
673 struct ocelot *ocelot = ocelot_port->ocelot;
674 struct ocelot_mact_work_ctx w;
675
676 ether_addr_copy(dst: w.learn.addr, src: addr);
677 w.learn.vid = OCELOT_STANDALONE_PVID;
678 w.learn.pgid = PGID_CPU;
679 w.learn.entry_type = ENTRYTYPE_LOCKED;
680 w.type = OCELOT_MACT_LEARN;
681
682 return ocelot_enqueue_mact_action(ocelot, ctx: &w);
683}
684
685static void ocelot_set_rx_mode(struct net_device *dev)
686{
687 struct ocelot_port_private *priv = netdev_priv(dev);
688 struct ocelot *ocelot = priv->port.ocelot;
689 u32 val;
690 int i;
691
692 /* This doesn't handle promiscuous mode because the bridge core is
693 * setting IFF_PROMISC on all slave interfaces and all frames would be
694 * forwarded to the CPU port.
695 */
696 val = GENMASK(ocelot->num_phys_ports - 1, 0);
697 for_each_nonreserved_multicast_dest_pgid(ocelot, i)
698 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
699
700 __dev_mc_sync(dev, sync: ocelot_mc_sync, unsync: ocelot_mc_unsync);
701}
702
703static int ocelot_port_set_mac_address(struct net_device *dev, void *p)
704{
705 struct ocelot_port_private *priv = netdev_priv(dev);
706 struct ocelot_port *ocelot_port = &priv->port;
707 struct ocelot *ocelot = ocelot_port->ocelot;
708 const struct sockaddr *addr = p;
709
710 /* Learn the new net device MAC address in the mac table. */
711 ocelot_mact_learn(ocelot, PGID_CPU, mac: addr->sa_data,
712 OCELOT_STANDALONE_PVID, type: ENTRYTYPE_LOCKED);
713 /* Then forget the previous one. */
714 ocelot_mact_forget(ocelot, mac: dev->dev_addr, OCELOT_STANDALONE_PVID);
715
716 eth_hw_addr_set(dev, addr: addr->sa_data);
717 return 0;
718}
719
720static void ocelot_get_stats64(struct net_device *dev,
721 struct rtnl_link_stats64 *stats)
722{
723 struct ocelot_port_private *priv = netdev_priv(dev);
724 struct ocelot *ocelot = priv->port.ocelot;
725 int port = priv->port.index;
726
727 return ocelot_port_get_stats64(ocelot, port, stats);
728}
729
730static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
731 struct net_device *dev,
732 const unsigned char *addr,
733 u16 vid, u16 flags,
734 struct netlink_ext_ack *extack)
735{
736 struct ocelot_port_private *priv = netdev_priv(dev);
737 struct ocelot_port *ocelot_port = &priv->port;
738 struct ocelot *ocelot = ocelot_port->ocelot;
739 int port = priv->port.index;
740
741 return ocelot_fdb_add(ocelot, port, addr, vid, bridge: ocelot_port->bridge);
742}
743
744static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
745 struct net_device *dev,
746 const unsigned char *addr, u16 vid,
747 struct netlink_ext_ack *extack)
748{
749 struct ocelot_port_private *priv = netdev_priv(dev);
750 struct ocelot_port *ocelot_port = &priv->port;
751 struct ocelot *ocelot = ocelot_port->ocelot;
752 int port = priv->port.index;
753
754 return ocelot_fdb_del(ocelot, port, addr, vid, bridge: ocelot_port->bridge);
755}
756
757static int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid,
758 bool is_static, void *data)
759{
760 struct ocelot_dump_ctx *dump = data;
761 u32 portid = NETLINK_CB(dump->cb->skb).portid;
762 u32 seq = dump->cb->nlh->nlmsg_seq;
763 struct nlmsghdr *nlh;
764 struct ndmsg *ndm;
765
766 if (dump->idx < dump->cb->args[2])
767 goto skip;
768
769 nlh = nlmsg_put(skb: dump->skb, portid, seq, RTM_NEWNEIGH,
770 payload: sizeof(*ndm), NLM_F_MULTI);
771 if (!nlh)
772 return -EMSGSIZE;
773
774 ndm = nlmsg_data(nlh);
775 ndm->ndm_family = AF_BRIDGE;
776 ndm->ndm_pad1 = 0;
777 ndm->ndm_pad2 = 0;
778 ndm->ndm_flags = NTF_SELF;
779 ndm->ndm_type = 0;
780 ndm->ndm_ifindex = dump->dev->ifindex;
781 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
782
783 if (nla_put(skb: dump->skb, attrtype: NDA_LLADDR, ETH_ALEN, data: addr))
784 goto nla_put_failure;
785
786 if (vid && nla_put_u16(skb: dump->skb, attrtype: NDA_VLAN, value: vid))
787 goto nla_put_failure;
788
789 nlmsg_end(skb: dump->skb, nlh);
790
791skip:
792 dump->idx++;
793 return 0;
794
795nla_put_failure:
796 nlmsg_cancel(skb: dump->skb, nlh);
797 return -EMSGSIZE;
798}
799
800static int ocelot_port_fdb_dump(struct sk_buff *skb,
801 struct netlink_callback *cb,
802 struct net_device *dev,
803 struct net_device *filter_dev, int *idx)
804{
805 struct ocelot_port_private *priv = netdev_priv(dev);
806 struct ocelot *ocelot = priv->port.ocelot;
807 struct ocelot_dump_ctx dump = {
808 .dev = dev,
809 .skb = skb,
810 .cb = cb,
811 .idx = *idx,
812 };
813 int port = priv->port.index;
814 int ret;
815
816 ret = ocelot_fdb_dump(ocelot, port, cb: ocelot_port_fdb_do_dump, data: &dump);
817
818 *idx = dump.idx;
819
820 return ret;
821}
822
823static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
824 u16 vid)
825{
826 return ocelot_vlan_vid_add(dev, vid, pvid: false, untagged: false);
827}
828
829static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
830 u16 vid)
831{
832 return ocelot_vlan_vid_del(dev, vid);
833}
834
835static void ocelot_vlan_mode(struct ocelot *ocelot, int port,
836 netdev_features_t features)
837{
838 u32 val;
839
840 /* Filtering */
841 val = ocelot_read(ocelot, ANA_VLANMASK);
842 if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
843 val |= BIT(port);
844 else
845 val &= ~BIT(port);
846 ocelot_write(ocelot, val, ANA_VLANMASK);
847}
848
849static int ocelot_set_features(struct net_device *dev,
850 netdev_features_t features)
851{
852 netdev_features_t changed = dev->features ^ features;
853 struct ocelot_port_private *priv = netdev_priv(dev);
854 struct ocelot *ocelot = priv->port.ocelot;
855 int port = priv->port.index;
856
857 if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
858 priv->tc.offload_cnt) {
859 netdev_err(dev,
860 format: "Cannot disable HW TC offload while offloads active\n");
861 return -EBUSY;
862 }
863
864 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)
865 ocelot_vlan_mode(ocelot, port, features);
866
867 return 0;
868}
869
870static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
871{
872 struct ocelot_port_private *priv = netdev_priv(dev);
873 struct ocelot *ocelot = priv->port.ocelot;
874 int port = priv->port.index;
875
876 /* If the attached PHY device isn't capable of timestamping operations,
877 * use our own (when possible).
878 */
879 if (!phy_has_hwtstamp(phydev: dev->phydev) && ocelot->ptp) {
880 switch (cmd) {
881 case SIOCSHWTSTAMP:
882 return ocelot_hwstamp_set(ocelot, port, ifr);
883 case SIOCGHWTSTAMP:
884 return ocelot_hwstamp_get(ocelot, port, ifr);
885 }
886 }
887
888 return phy_mii_ioctl(phydev: dev->phydev, ifr, cmd);
889}
890
891static int ocelot_change_mtu(struct net_device *dev, int new_mtu)
892{
893 struct ocelot_port_private *priv = netdev_priv(dev);
894 struct ocelot_port *ocelot_port = &priv->port;
895 struct ocelot *ocelot = ocelot_port->ocelot;
896
897 ocelot_port_set_maxlen(ocelot, port: priv->port.index, sdu: new_mtu);
898 WRITE_ONCE(dev->mtu, new_mtu);
899
900 return 0;
901}
902
903static const struct net_device_ops ocelot_port_netdev_ops = {
904 .ndo_open = ocelot_port_open,
905 .ndo_stop = ocelot_port_stop,
906 .ndo_start_xmit = ocelot_port_xmit,
907 .ndo_change_mtu = ocelot_change_mtu,
908 .ndo_set_rx_mode = ocelot_set_rx_mode,
909 .ndo_set_mac_address = ocelot_port_set_mac_address,
910 .ndo_get_stats64 = ocelot_get_stats64,
911 .ndo_fdb_add = ocelot_port_fdb_add,
912 .ndo_fdb_del = ocelot_port_fdb_del,
913 .ndo_fdb_dump = ocelot_port_fdb_dump,
914 .ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid,
915 .ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid,
916 .ndo_set_features = ocelot_set_features,
917 .ndo_setup_tc = ocelot_setup_tc,
918 .ndo_eth_ioctl = ocelot_ioctl,
919};
920
921struct net_device *ocelot_port_to_netdev(struct ocelot *ocelot, int port)
922{
923 struct ocelot_port *ocelot_port = ocelot->ports[port];
924 struct ocelot_port_private *priv;
925
926 if (!ocelot_port)
927 return NULL;
928
929 priv = container_of(ocelot_port, struct ocelot_port_private, port);
930
931 return priv->dev;
932}
933
934/* Checks if the net_device instance given to us originates from our driver */
935static bool ocelot_netdevice_dev_check(const struct net_device *dev)
936{
937 return dev->netdev_ops == &ocelot_port_netdev_ops;
938}
939
940int ocelot_netdev_to_port(struct net_device *dev)
941{
942 struct ocelot_port_private *priv;
943
944 if (!dev || !ocelot_netdevice_dev_check(dev))
945 return -EINVAL;
946
947 priv = netdev_priv(dev);
948
949 return priv->port.index;
950}
951
952static void ocelot_port_get_strings(struct net_device *netdev, u32 sset,
953 u8 *data)
954{
955 struct ocelot_port_private *priv = netdev_priv(dev: netdev);
956 struct ocelot *ocelot = priv->port.ocelot;
957 int port = priv->port.index;
958
959 ocelot_get_strings(ocelot, port, sset, data);
960}
961
962static void ocelot_port_get_ethtool_stats(struct net_device *dev,
963 struct ethtool_stats *stats,
964 u64 *data)
965{
966 struct ocelot_port_private *priv = netdev_priv(dev);
967 struct ocelot *ocelot = priv->port.ocelot;
968 int port = priv->port.index;
969
970 ocelot_get_ethtool_stats(ocelot, port, data);
971}
972
973static int ocelot_port_get_sset_count(struct net_device *dev, int sset)
974{
975 struct ocelot_port_private *priv = netdev_priv(dev);
976 struct ocelot *ocelot = priv->port.ocelot;
977 int port = priv->port.index;
978
979 return ocelot_get_sset_count(ocelot, port, sset);
980}
981
982static int ocelot_port_get_ts_info(struct net_device *dev,
983 struct ethtool_ts_info *info)
984{
985 struct ocelot_port_private *priv = netdev_priv(dev);
986 struct ocelot *ocelot = priv->port.ocelot;
987 int port = priv->port.index;
988
989 if (!ocelot->ptp)
990 return ethtool_op_get_ts_info(dev, eti: info);
991
992 return ocelot_get_ts_info(ocelot, port, info);
993}
994
995static const struct ethtool_ops ocelot_ethtool_ops = {
996 .get_strings = ocelot_port_get_strings,
997 .get_ethtool_stats = ocelot_port_get_ethtool_stats,
998 .get_sset_count = ocelot_port_get_sset_count,
999 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1000 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1001 .get_ts_info = ocelot_port_get_ts_info,
1002};
1003
1004static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port,
1005 u8 state)
1006{
1007 ocelot_bridge_stp_state_set(ocelot, port, state);
1008}
1009
1010static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port,
1011 unsigned long ageing_clock_t)
1012{
1013 unsigned long ageing_jiffies = clock_t_to_jiffies(x: ageing_clock_t);
1014 u32 ageing_time = jiffies_to_msecs(j: ageing_jiffies);
1015
1016 ocelot_set_ageing_time(ocelot, msecs: ageing_time);
1017}
1018
1019static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc)
1020{
1021 u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |
1022 ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |
1023 ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA;
1024 u32 val = 0;
1025
1026 if (mc)
1027 val = cpu_fwd_mcast;
1028
1029 ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast,
1030 ANA_PORT_CPU_FWD_CFG, port);
1031}
1032
1033static int ocelot_port_attr_set(struct net_device *dev, const void *ctx,
1034 const struct switchdev_attr *attr,
1035 struct netlink_ext_ack *extack)
1036{
1037 struct ocelot_port_private *priv = netdev_priv(dev);
1038 struct ocelot *ocelot = priv->port.ocelot;
1039 int port = priv->port.index;
1040 int err = 0;
1041
1042 if (ctx && ctx != priv)
1043 return 0;
1044
1045 switch (attr->id) {
1046 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
1047 ocelot_port_attr_stp_state_set(ocelot, port, state: attr->u.stp_state);
1048 break;
1049 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
1050 ocelot_port_attr_ageing_set(ocelot, port, ageing_clock_t: attr->u.ageing_time);
1051 break;
1052 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
1053 ocelot_port_vlan_filtering(ocelot, port, enabled: attr->u.vlan_filtering,
1054 extack);
1055 break;
1056 case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
1057 ocelot_port_attr_mc_set(ocelot, port, mc: !attr->u.mc_disabled);
1058 break;
1059 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
1060 err = ocelot_port_pre_bridge_flags(ocelot, port,
1061 val: attr->u.brport_flags);
1062 break;
1063 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
1064 ocelot_port_bridge_flags(ocelot, port, val: attr->u.brport_flags);
1065 break;
1066 default:
1067 err = -EOPNOTSUPP;
1068 break;
1069 }
1070
1071 return err;
1072}
1073
1074static int ocelot_vlan_vid_prepare(struct net_device *dev, u16 vid, bool pvid,
1075 bool untagged, struct netlink_ext_ack *extack)
1076{
1077 struct ocelot_port_private *priv = netdev_priv(dev);
1078 struct ocelot_port *ocelot_port = &priv->port;
1079 struct ocelot *ocelot = ocelot_port->ocelot;
1080 int port = priv->port.index;
1081
1082 return ocelot_vlan_prepare(ocelot, port, vid, pvid, untagged, extack);
1083}
1084
1085static int ocelot_port_obj_add_vlan(struct net_device *dev,
1086 const struct switchdev_obj_port_vlan *vlan,
1087 struct netlink_ext_ack *extack)
1088{
1089 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1090 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1091 int ret;
1092
1093 ret = ocelot_vlan_vid_prepare(dev, vid: vlan->vid, pvid, untagged, extack);
1094 if (ret)
1095 return ret;
1096
1097 return ocelot_vlan_vid_add(dev, vid: vlan->vid, pvid, untagged);
1098}
1099
1100static int ocelot_port_obj_add_mdb(struct net_device *dev,
1101 const struct switchdev_obj_port_mdb *mdb)
1102{
1103 struct ocelot_port_private *priv = netdev_priv(dev);
1104 struct ocelot_port *ocelot_port = &priv->port;
1105 struct ocelot *ocelot = ocelot_port->ocelot;
1106 int port = priv->port.index;
1107
1108 return ocelot_port_mdb_add(ocelot, port, mdb, bridge: ocelot_port->bridge);
1109}
1110
1111static int ocelot_port_obj_del_mdb(struct net_device *dev,
1112 const struct switchdev_obj_port_mdb *mdb)
1113{
1114 struct ocelot_port_private *priv = netdev_priv(dev);
1115 struct ocelot_port *ocelot_port = &priv->port;
1116 struct ocelot *ocelot = ocelot_port->ocelot;
1117 int port = priv->port.index;
1118
1119 return ocelot_port_mdb_del(ocelot, port, mdb, bridge: ocelot_port->bridge);
1120}
1121
1122static int ocelot_port_obj_mrp_add(struct net_device *dev,
1123 const struct switchdev_obj_mrp *mrp)
1124{
1125 struct ocelot_port_private *priv = netdev_priv(dev);
1126 struct ocelot_port *ocelot_port = &priv->port;
1127 struct ocelot *ocelot = ocelot_port->ocelot;
1128 int port = priv->port.index;
1129
1130 return ocelot_mrp_add(ocelot, port, mrp);
1131}
1132
1133static int ocelot_port_obj_mrp_del(struct net_device *dev,
1134 const struct switchdev_obj_mrp *mrp)
1135{
1136 struct ocelot_port_private *priv = netdev_priv(dev);
1137 struct ocelot_port *ocelot_port = &priv->port;
1138 struct ocelot *ocelot = ocelot_port->ocelot;
1139 int port = priv->port.index;
1140
1141 return ocelot_mrp_del(ocelot, port, mrp);
1142}
1143
1144static int
1145ocelot_port_obj_mrp_add_ring_role(struct net_device *dev,
1146 const struct switchdev_obj_ring_role_mrp *mrp)
1147{
1148 struct ocelot_port_private *priv = netdev_priv(dev);
1149 struct ocelot_port *ocelot_port = &priv->port;
1150 struct ocelot *ocelot = ocelot_port->ocelot;
1151 int port = priv->port.index;
1152
1153 return ocelot_mrp_add_ring_role(ocelot, port, mrp);
1154}
1155
1156static int
1157ocelot_port_obj_mrp_del_ring_role(struct net_device *dev,
1158 const struct switchdev_obj_ring_role_mrp *mrp)
1159{
1160 struct ocelot_port_private *priv = netdev_priv(dev);
1161 struct ocelot_port *ocelot_port = &priv->port;
1162 struct ocelot *ocelot = ocelot_port->ocelot;
1163 int port = priv->port.index;
1164
1165 return ocelot_mrp_del_ring_role(ocelot, port, mrp);
1166}
1167
1168static int ocelot_port_obj_add(struct net_device *dev, const void *ctx,
1169 const struct switchdev_obj *obj,
1170 struct netlink_ext_ack *extack)
1171{
1172 struct ocelot_port_private *priv = netdev_priv(dev);
1173 int ret = 0;
1174
1175 if (ctx && ctx != priv)
1176 return 0;
1177
1178 switch (obj->id) {
1179 case SWITCHDEV_OBJ_ID_PORT_VLAN:
1180 ret = ocelot_port_obj_add_vlan(dev,
1181 SWITCHDEV_OBJ_PORT_VLAN(obj),
1182 extack);
1183 break;
1184 case SWITCHDEV_OBJ_ID_PORT_MDB:
1185 ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
1186 break;
1187 case SWITCHDEV_OBJ_ID_MRP:
1188 ret = ocelot_port_obj_mrp_add(dev, SWITCHDEV_OBJ_MRP(obj));
1189 break;
1190 case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
1191 ret = ocelot_port_obj_mrp_add_ring_role(dev,
1192 SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
1193 break;
1194 default:
1195 return -EOPNOTSUPP;
1196 }
1197
1198 return ret;
1199}
1200
1201static int ocelot_port_obj_del(struct net_device *dev, const void *ctx,
1202 const struct switchdev_obj *obj)
1203{
1204 struct ocelot_port_private *priv = netdev_priv(dev);
1205 int ret = 0;
1206
1207 if (ctx && ctx != priv)
1208 return 0;
1209
1210 switch (obj->id) {
1211 case SWITCHDEV_OBJ_ID_PORT_VLAN:
1212 ret = ocelot_vlan_vid_del(dev,
1213 SWITCHDEV_OBJ_PORT_VLAN(obj)->vid);
1214 break;
1215 case SWITCHDEV_OBJ_ID_PORT_MDB:
1216 ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
1217 break;
1218 case SWITCHDEV_OBJ_ID_MRP:
1219 ret = ocelot_port_obj_mrp_del(dev, SWITCHDEV_OBJ_MRP(obj));
1220 break;
1221 case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
1222 ret = ocelot_port_obj_mrp_del_ring_role(dev,
1223 SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
1224 break;
1225 default:
1226 return -EOPNOTSUPP;
1227 }
1228
1229 return ret;
1230}
1231
1232static void ocelot_inherit_brport_flags(struct ocelot *ocelot, int port,
1233 struct net_device *brport_dev)
1234{
1235 struct switchdev_brport_flags flags = {0};
1236 int flag;
1237
1238 flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
1239
1240 for_each_set_bit(flag, &flags.mask, 32)
1241 if (br_port_flag_is_set(dev: brport_dev, BIT(flag)))
1242 flags.val |= BIT(flag);
1243
1244 ocelot_port_bridge_flags(ocelot, port, val: flags);
1245}
1246
1247static void ocelot_clear_brport_flags(struct ocelot *ocelot, int port)
1248{
1249 struct switchdev_brport_flags flags;
1250
1251 flags.mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
1252 flags.val = flags.mask & ~BR_LEARNING;
1253
1254 ocelot_port_bridge_flags(ocelot, port, val: flags);
1255}
1256
1257static int ocelot_switchdev_sync(struct ocelot *ocelot, int port,
1258 struct net_device *brport_dev,
1259 struct net_device *bridge_dev,
1260 struct netlink_ext_ack *extack)
1261{
1262 clock_t ageing_time;
1263 u8 stp_state;
1264
1265 ocelot_inherit_brport_flags(ocelot, port, brport_dev);
1266
1267 stp_state = br_port_get_stp_state(dev: brport_dev);
1268 ocelot_bridge_stp_state_set(ocelot, port, state: stp_state);
1269
1270 ageing_time = br_get_ageing_time(br_dev: bridge_dev);
1271 ocelot_port_attr_ageing_set(ocelot, port, ageing_clock_t: ageing_time);
1272
1273 return ocelot_port_vlan_filtering(ocelot, port,
1274 enabled: br_vlan_enabled(dev: bridge_dev),
1275 extack);
1276}
1277
1278static int ocelot_switchdev_unsync(struct ocelot *ocelot, int port)
1279{
1280 int err;
1281
1282 err = ocelot_port_vlan_filtering(ocelot, port, enabled: false, NULL);
1283 if (err)
1284 return err;
1285
1286 ocelot_clear_brport_flags(ocelot, port);
1287
1288 ocelot_bridge_stp_state_set(ocelot, port, BR_STATE_FORWARDING);
1289
1290 return 0;
1291}
1292
1293static int ocelot_bridge_num_get(struct ocelot *ocelot,
1294 const struct net_device *bridge_dev)
1295{
1296 int bridge_num = ocelot_bridge_num_find(ocelot, bridge: bridge_dev);
1297
1298 if (bridge_num < 0) {
1299 /* First port that offloads this bridge */
1300 bridge_num = find_first_zero_bit(addr: &ocelot->bridges,
1301 size: ocelot->num_phys_ports);
1302
1303 set_bit(nr: bridge_num, addr: &ocelot->bridges);
1304 }
1305
1306 return bridge_num;
1307}
1308
1309static void ocelot_bridge_num_put(struct ocelot *ocelot,
1310 const struct net_device *bridge_dev,
1311 int bridge_num)
1312{
1313 /* Check if the bridge is still in use, otherwise it is time
1314 * to clean it up so we can reuse this bridge_num later.
1315 */
1316 if (!ocelot_bridge_num_find(ocelot, bridge: bridge_dev))
1317 clear_bit(nr: bridge_num, addr: &ocelot->bridges);
1318}
1319
1320static int ocelot_netdevice_bridge_join(struct net_device *dev,
1321 struct net_device *brport_dev,
1322 struct net_device *bridge,
1323 struct netlink_ext_ack *extack)
1324{
1325 struct ocelot_port_private *priv = netdev_priv(dev);
1326 struct ocelot_port *ocelot_port = &priv->port;
1327 struct ocelot *ocelot = ocelot_port->ocelot;
1328 int port = priv->port.index;
1329 int bridge_num, err;
1330
1331 bridge_num = ocelot_bridge_num_get(ocelot, bridge_dev: bridge);
1332
1333 err = ocelot_port_bridge_join(ocelot, port, bridge, bridge_num,
1334 extack);
1335 if (err)
1336 goto err_join;
1337
1338 err = switchdev_bridge_port_offload(brport_dev, dev, ctx: priv,
1339 atomic_nb: &ocelot_switchdev_nb,
1340 blocking_nb: &ocelot_switchdev_blocking_nb,
1341 tx_fwd_offload: false, extack);
1342 if (err)
1343 goto err_switchdev_offload;
1344
1345 err = ocelot_switchdev_sync(ocelot, port, brport_dev, bridge_dev: bridge, extack);
1346 if (err)
1347 goto err_switchdev_sync;
1348
1349 return 0;
1350
1351err_switchdev_sync:
1352 switchdev_bridge_port_unoffload(brport_dev, ctx: priv,
1353 atomic_nb: &ocelot_switchdev_nb,
1354 blocking_nb: &ocelot_switchdev_blocking_nb);
1355err_switchdev_offload:
1356 ocelot_port_bridge_leave(ocelot, port, bridge);
1357err_join:
1358 ocelot_bridge_num_put(ocelot, bridge_dev: bridge, bridge_num);
1359 return err;
1360}
1361
1362static void ocelot_netdevice_pre_bridge_leave(struct net_device *dev,
1363 struct net_device *brport_dev)
1364{
1365 struct ocelot_port_private *priv = netdev_priv(dev);
1366
1367 switchdev_bridge_port_unoffload(brport_dev, ctx: priv,
1368 atomic_nb: &ocelot_switchdev_nb,
1369 blocking_nb: &ocelot_switchdev_blocking_nb);
1370}
1371
1372static int ocelot_netdevice_bridge_leave(struct net_device *dev,
1373 struct net_device *brport_dev,
1374 struct net_device *bridge)
1375{
1376 struct ocelot_port_private *priv = netdev_priv(dev);
1377 struct ocelot_port *ocelot_port = &priv->port;
1378 struct ocelot *ocelot = ocelot_port->ocelot;
1379 int bridge_num = ocelot_port->bridge_num;
1380 int port = priv->port.index;
1381 int err;
1382
1383 err = ocelot_switchdev_unsync(ocelot, port);
1384 if (err)
1385 return err;
1386
1387 ocelot_port_bridge_leave(ocelot, port, bridge);
1388 ocelot_bridge_num_put(ocelot, bridge_dev: bridge, bridge_num);
1389
1390 return 0;
1391}
1392
1393static int ocelot_netdevice_lag_join(struct net_device *dev,
1394 struct net_device *bond,
1395 struct netdev_lag_upper_info *info,
1396 struct netlink_ext_ack *extack)
1397{
1398 struct ocelot_port_private *priv = netdev_priv(dev);
1399 struct ocelot_port *ocelot_port = &priv->port;
1400 struct ocelot *ocelot = ocelot_port->ocelot;
1401 struct net_device *bridge_dev;
1402 int port = priv->port.index;
1403 int err;
1404
1405 err = ocelot_port_lag_join(ocelot, port, bond, info, extack);
1406 if (err == -EOPNOTSUPP)
1407 /* Offloading not supported, fall back to software LAG */
1408 return 0;
1409
1410 bridge_dev = netdev_master_upper_dev_get(dev: bond);
1411 if (!bridge_dev || !netif_is_bridge_master(dev: bridge_dev))
1412 return 0;
1413
1414 err = ocelot_netdevice_bridge_join(dev, brport_dev: bond, bridge: bridge_dev, extack);
1415 if (err)
1416 goto err_bridge_join;
1417
1418 return 0;
1419
1420err_bridge_join:
1421 ocelot_port_lag_leave(ocelot, port, bond);
1422 return err;
1423}
1424
1425static void ocelot_netdevice_pre_lag_leave(struct net_device *dev,
1426 struct net_device *bond)
1427{
1428 struct net_device *bridge_dev;
1429
1430 bridge_dev = netdev_master_upper_dev_get(dev: bond);
1431 if (!bridge_dev || !netif_is_bridge_master(dev: bridge_dev))
1432 return;
1433
1434 ocelot_netdevice_pre_bridge_leave(dev, brport_dev: bond);
1435}
1436
1437static int ocelot_netdevice_lag_leave(struct net_device *dev,
1438 struct net_device *bond)
1439{
1440 struct ocelot_port_private *priv = netdev_priv(dev);
1441 struct ocelot_port *ocelot_port = &priv->port;
1442 struct ocelot *ocelot = ocelot_port->ocelot;
1443 struct net_device *bridge_dev;
1444 int port = priv->port.index;
1445
1446 ocelot_port_lag_leave(ocelot, port, bond);
1447
1448 bridge_dev = netdev_master_upper_dev_get(dev: bond);
1449 if (!bridge_dev || !netif_is_bridge_master(dev: bridge_dev))
1450 return 0;
1451
1452 return ocelot_netdevice_bridge_leave(dev, brport_dev: bond, bridge: bridge_dev);
1453}
1454
1455static int ocelot_netdevice_changeupper(struct net_device *dev,
1456 struct net_device *brport_dev,
1457 struct netdev_notifier_changeupper_info *info)
1458{
1459 struct netlink_ext_ack *extack;
1460 int err = 0;
1461
1462 extack = netdev_notifier_info_to_extack(info: &info->info);
1463
1464 if (netif_is_bridge_master(dev: info->upper_dev)) {
1465 if (info->linking)
1466 err = ocelot_netdevice_bridge_join(dev, brport_dev,
1467 bridge: info->upper_dev,
1468 extack);
1469 else
1470 err = ocelot_netdevice_bridge_leave(dev, brport_dev,
1471 bridge: info->upper_dev);
1472 }
1473 if (netif_is_lag_master(dev: info->upper_dev)) {
1474 if (info->linking)
1475 err = ocelot_netdevice_lag_join(dev, bond: info->upper_dev,
1476 info: info->upper_info, extack);
1477 else
1478 ocelot_netdevice_lag_leave(dev, bond: info->upper_dev);
1479 }
1480
1481 return notifier_from_errno(err);
1482}
1483
1484/* Treat CHANGEUPPER events on an offloaded LAG as individual CHANGEUPPER
1485 * events for the lower physical ports of the LAG.
1486 * If the LAG upper isn't offloaded, ignore its CHANGEUPPER events.
1487 * In case the LAG joined a bridge, notify that we are offloading it and can do
1488 * forwarding in hardware towards it.
1489 */
1490static int
1491ocelot_netdevice_lag_changeupper(struct net_device *dev,
1492 struct netdev_notifier_changeupper_info *info)
1493{
1494 struct net_device *lower;
1495 struct list_head *iter;
1496 int err = NOTIFY_DONE;
1497
1498 netdev_for_each_lower_dev(dev, lower, iter) {
1499 struct ocelot_port_private *priv = netdev_priv(dev: lower);
1500 struct ocelot_port *ocelot_port = &priv->port;
1501
1502 if (ocelot_port->bond != dev)
1503 return NOTIFY_OK;
1504
1505 err = ocelot_netdevice_changeupper(dev: lower, brport_dev: dev, info);
1506 if (err)
1507 return notifier_from_errno(err);
1508 }
1509
1510 return NOTIFY_DONE;
1511}
1512
1513static int
1514ocelot_netdevice_prechangeupper(struct net_device *dev,
1515 struct net_device *brport_dev,
1516 struct netdev_notifier_changeupper_info *info)
1517{
1518 if (netif_is_bridge_master(dev: info->upper_dev) && !info->linking)
1519 ocelot_netdevice_pre_bridge_leave(dev, brport_dev);
1520
1521 if (netif_is_lag_master(dev: info->upper_dev) && !info->linking)
1522 ocelot_netdevice_pre_lag_leave(dev, bond: info->upper_dev);
1523
1524 return NOTIFY_DONE;
1525}
1526
1527static int
1528ocelot_netdevice_lag_prechangeupper(struct net_device *dev,
1529 struct netdev_notifier_changeupper_info *info)
1530{
1531 struct net_device *lower;
1532 struct list_head *iter;
1533 int err = NOTIFY_DONE;
1534
1535 netdev_for_each_lower_dev(dev, lower, iter) {
1536 struct ocelot_port_private *priv = netdev_priv(dev: lower);
1537 struct ocelot_port *ocelot_port = &priv->port;
1538
1539 if (ocelot_port->bond != dev)
1540 return NOTIFY_OK;
1541
1542 err = ocelot_netdevice_prechangeupper(dev, brport_dev: lower, info);
1543 if (err)
1544 return err;
1545 }
1546
1547 return NOTIFY_DONE;
1548}
1549
1550static int
1551ocelot_netdevice_changelowerstate(struct net_device *dev,
1552 struct netdev_lag_lower_state_info *info)
1553{
1554 struct ocelot_port_private *priv = netdev_priv(dev);
1555 bool is_active = info->link_up && info->tx_enabled;
1556 struct ocelot_port *ocelot_port = &priv->port;
1557 struct ocelot *ocelot = ocelot_port->ocelot;
1558 int port = priv->port.index;
1559
1560 if (!ocelot_port->bond)
1561 return NOTIFY_DONE;
1562
1563 if (ocelot_port->lag_tx_active == is_active)
1564 return NOTIFY_DONE;
1565
1566 ocelot_port_lag_change(ocelot, port, lag_tx_active: is_active);
1567
1568 return NOTIFY_OK;
1569}
1570
1571static int ocelot_netdevice_event(struct notifier_block *unused,
1572 unsigned long event, void *ptr)
1573{
1574 struct net_device *dev = netdev_notifier_info_to_dev(info: ptr);
1575
1576 switch (event) {
1577 case NETDEV_PRECHANGEUPPER: {
1578 struct netdev_notifier_changeupper_info *info = ptr;
1579
1580 if (ocelot_netdevice_dev_check(dev))
1581 return ocelot_netdevice_prechangeupper(dev, brport_dev: dev, info);
1582
1583 if (netif_is_lag_master(dev))
1584 return ocelot_netdevice_lag_prechangeupper(dev, info);
1585
1586 break;
1587 }
1588 case NETDEV_CHANGEUPPER: {
1589 struct netdev_notifier_changeupper_info *info = ptr;
1590
1591 if (ocelot_netdevice_dev_check(dev))
1592 return ocelot_netdevice_changeupper(dev, brport_dev: dev, info);
1593
1594 if (netif_is_lag_master(dev))
1595 return ocelot_netdevice_lag_changeupper(dev, info);
1596
1597 break;
1598 }
1599 case NETDEV_CHANGELOWERSTATE: {
1600 struct netdev_notifier_changelowerstate_info *info = ptr;
1601
1602 if (!ocelot_netdevice_dev_check(dev))
1603 break;
1604
1605 return ocelot_netdevice_changelowerstate(dev,
1606 info: info->lower_state_info);
1607 }
1608 default:
1609 break;
1610 }
1611
1612 return NOTIFY_DONE;
1613}
1614
1615struct notifier_block ocelot_netdevice_nb __read_mostly = {
1616 .notifier_call = ocelot_netdevice_event,
1617};
1618
1619static int ocelot_switchdev_event(struct notifier_block *unused,
1620 unsigned long event, void *ptr)
1621{
1622 struct net_device *dev = switchdev_notifier_info_to_dev(info: ptr);
1623 int err;
1624
1625 switch (event) {
1626 case SWITCHDEV_PORT_ATTR_SET:
1627 err = switchdev_handle_port_attr_set(dev, port_attr_info: ptr,
1628 check_cb: ocelot_netdevice_dev_check,
1629 set_cb: ocelot_port_attr_set);
1630 return notifier_from_errno(err);
1631 }
1632
1633 return NOTIFY_DONE;
1634}
1635
1636struct notifier_block ocelot_switchdev_nb __read_mostly = {
1637 .notifier_call = ocelot_switchdev_event,
1638};
1639
1640static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
1641 unsigned long event, void *ptr)
1642{
1643 struct net_device *dev = switchdev_notifier_info_to_dev(info: ptr);
1644 int err;
1645
1646 switch (event) {
1647 /* Blocking events. */
1648 case SWITCHDEV_PORT_OBJ_ADD:
1649 err = switchdev_handle_port_obj_add(dev, port_obj_info: ptr,
1650 check_cb: ocelot_netdevice_dev_check,
1651 add_cb: ocelot_port_obj_add);
1652 return notifier_from_errno(err);
1653 case SWITCHDEV_PORT_OBJ_DEL:
1654 err = switchdev_handle_port_obj_del(dev, port_obj_info: ptr,
1655 check_cb: ocelot_netdevice_dev_check,
1656 del_cb: ocelot_port_obj_del);
1657 return notifier_from_errno(err);
1658 case SWITCHDEV_PORT_ATTR_SET:
1659 err = switchdev_handle_port_attr_set(dev, port_attr_info: ptr,
1660 check_cb: ocelot_netdevice_dev_check,
1661 set_cb: ocelot_port_attr_set);
1662 return notifier_from_errno(err);
1663 }
1664
1665 return NOTIFY_DONE;
1666}
1667
1668struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = {
1669 .notifier_call = ocelot_switchdev_blocking_event,
1670};
1671
1672static void vsc7514_phylink_mac_config(struct phylink_config *config,
1673 unsigned int link_an_mode,
1674 const struct phylink_link_state *state)
1675{
1676 struct net_device *ndev = to_net_dev(config->dev);
1677 struct ocelot_port_private *priv = netdev_priv(dev: ndev);
1678 struct ocelot *ocelot = priv->port.ocelot;
1679 int port = priv->port.index;
1680
1681 ocelot_phylink_mac_config(ocelot, port, link_an_mode, state);
1682}
1683
1684static void vsc7514_phylink_mac_link_down(struct phylink_config *config,
1685 unsigned int link_an_mode,
1686 phy_interface_t interface)
1687{
1688 struct net_device *ndev = to_net_dev(config->dev);
1689 struct ocelot_port_private *priv = netdev_priv(dev: ndev);
1690 struct ocelot *ocelot = priv->port.ocelot;
1691 int port = priv->port.index;
1692
1693 ocelot_phylink_mac_link_down(ocelot, port, link_an_mode, interface,
1694 OCELOT_MAC_QUIRKS);
1695}
1696
1697static void vsc7514_phylink_mac_link_up(struct phylink_config *config,
1698 struct phy_device *phydev,
1699 unsigned int link_an_mode,
1700 phy_interface_t interface,
1701 int speed, int duplex,
1702 bool tx_pause, bool rx_pause)
1703{
1704 struct net_device *ndev = to_net_dev(config->dev);
1705 struct ocelot_port_private *priv = netdev_priv(dev: ndev);
1706 struct ocelot *ocelot = priv->port.ocelot;
1707 int port = priv->port.index;
1708
1709 ocelot_phylink_mac_link_up(ocelot, port, phydev, link_an_mode,
1710 interface, speed, duplex,
1711 tx_pause, rx_pause, OCELOT_MAC_QUIRKS);
1712}
1713
1714static const struct phylink_mac_ops ocelot_phylink_ops = {
1715 .mac_config = vsc7514_phylink_mac_config,
1716 .mac_link_down = vsc7514_phylink_mac_link_down,
1717 .mac_link_up = vsc7514_phylink_mac_link_up,
1718};
1719
1720static int ocelot_port_phylink_create(struct ocelot *ocelot, int port,
1721 struct device_node *portnp)
1722{
1723 struct ocelot_port *ocelot_port = ocelot->ports[port];
1724 struct ocelot_port_private *priv;
1725 struct device *dev = ocelot->dev;
1726 phy_interface_t phy_mode;
1727 struct phylink *phylink;
1728 int err;
1729
1730 of_get_phy_mode(np: portnp, interface: &phy_mode);
1731 /* DT bindings of internal PHY ports are broken and don't
1732 * specify a phy-mode
1733 */
1734 if (phy_mode == PHY_INTERFACE_MODE_NA)
1735 phy_mode = PHY_INTERFACE_MODE_INTERNAL;
1736
1737 if (phy_mode != PHY_INTERFACE_MODE_SGMII &&
1738 phy_mode != PHY_INTERFACE_MODE_QSGMII &&
1739 phy_mode != PHY_INTERFACE_MODE_INTERNAL) {
1740 dev_err(dev, "unsupported phy mode %s for port %d\n",
1741 phy_modes(phy_mode), port);
1742 return -EINVAL;
1743 }
1744
1745 ocelot_port->phy_mode = phy_mode;
1746
1747 err = ocelot_port_configure_serdes(ocelot, port, portnp);
1748 if (err)
1749 return err;
1750
1751 priv = container_of(ocelot_port, struct ocelot_port_private, port);
1752
1753 priv->phylink_config.dev = &priv->dev->dev;
1754 priv->phylink_config.type = PHYLINK_NETDEV;
1755 priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
1756 MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD;
1757
1758 __set_bit(ocelot_port->phy_mode,
1759 priv->phylink_config.supported_interfaces);
1760
1761 phylink = phylink_create(&priv->phylink_config,
1762 of_fwnode_handle(portnp),
1763 phy_mode, &ocelot_phylink_ops);
1764 if (IS_ERR(ptr: phylink)) {
1765 err = PTR_ERR(ptr: phylink);
1766 dev_err(dev, "Could not create phylink (%pe)\n", phylink);
1767 return err;
1768 }
1769
1770 priv->phylink = phylink;
1771
1772 err = phylink_of_phy_connect(phylink, portnp, flags: 0);
1773 if (err) {
1774 dev_err(dev, "Could not connect to PHY: %pe\n", ERR_PTR(err));
1775 phylink_destroy(phylink);
1776 priv->phylink = NULL;
1777 return err;
1778 }
1779
1780 return 0;
1781}
1782
1783int ocelot_probe_port(struct ocelot *ocelot, int port, struct regmap *target,
1784 struct device_node *portnp)
1785{
1786 struct ocelot_port_private *priv;
1787 struct ocelot_port *ocelot_port;
1788 struct net_device *dev;
1789 int err;
1790
1791 dev = alloc_etherdev(sizeof(struct ocelot_port_private));
1792 if (!dev)
1793 return -ENOMEM;
1794 SET_NETDEV_DEV(dev, ocelot->dev);
1795 priv = netdev_priv(dev);
1796 priv->dev = dev;
1797 ocelot_port = &priv->port;
1798 ocelot_port->ocelot = ocelot;
1799 ocelot_port->index = port;
1800 ocelot_port->target = target;
1801 ocelot->ports[port] = ocelot_port;
1802
1803 dev->netdev_ops = &ocelot_port_netdev_ops;
1804 dev->ethtool_ops = &ocelot_ethtool_ops;
1805 dev->max_mtu = OCELOT_JUMBO_MTU;
1806
1807 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS |
1808 NETIF_F_HW_TC;
1809 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
1810
1811 err = of_get_ethdev_address(np: portnp, dev);
1812 if (err)
1813 eth_hw_addr_gen(dev, base_addr: ocelot->base_mac, id: port);
1814
1815 ocelot_mact_learn(ocelot, PGID_CPU, mac: dev->dev_addr,
1816 OCELOT_STANDALONE_PVID, type: ENTRYTYPE_LOCKED);
1817
1818 ocelot_init_port(ocelot, port);
1819
1820 err = ocelot_port_phylink_create(ocelot, port, portnp);
1821 if (err)
1822 goto out;
1823
1824 if (ocelot->fdma)
1825 ocelot_fdma_netdev_init(ocelot, dev);
1826
1827 SET_NETDEV_DEVLINK_PORT(dev, &ocelot->devlink_ports[port]);
1828 err = register_netdev(dev);
1829 if (err) {
1830 dev_err(ocelot->dev, "register_netdev failed\n");
1831 goto out_fdma_deinit;
1832 }
1833
1834 return 0;
1835
1836out_fdma_deinit:
1837 if (ocelot->fdma)
1838 ocelot_fdma_netdev_deinit(ocelot, dev);
1839out:
1840 ocelot->ports[port] = NULL;
1841 free_netdev(dev);
1842
1843 return err;
1844}
1845
1846void ocelot_release_port(struct ocelot_port *ocelot_port)
1847{
1848 struct ocelot_port_private *priv = container_of(ocelot_port,
1849 struct ocelot_port_private,
1850 port);
1851 struct ocelot *ocelot = ocelot_port->ocelot;
1852 struct ocelot_fdma *fdma = ocelot->fdma;
1853
1854 unregister_netdev(dev: priv->dev);
1855
1856 if (fdma)
1857 ocelot_fdma_netdev_deinit(ocelot, dev: priv->dev);
1858
1859 if (priv->phylink) {
1860 rtnl_lock();
1861 phylink_disconnect_phy(priv->phylink);
1862 rtnl_unlock();
1863
1864 phylink_destroy(priv->phylink);
1865 }
1866
1867 free_netdev(dev: priv->dev);
1868}
1869

source code of linux/drivers/net/ethernet/mscc/ocelot_net.c