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7#include <linux/list.h>
8#include <linux/etherdevice.h>
9#include <linux/netdevice.h>
10#include <linux/phy.h>
11#include <linux/phy_fixed.h>
12#include <linux/phylink.h>
13#include <linux/of_net.h>
14#include <linux/of_mdio.h>
15#include <linux/mdio.h>
16#include <net/rtnetlink.h>
17#include <net/pkt_cls.h>
18#include <net/tc_act/tc_mirred.h>
19#include <linux/if_bridge.h>
20#include <linux/netpoll.h>
21#include <linux/ptp_classify.h>
22
23#include "dsa_priv.h"
24
25
26static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
27{
28 struct dsa_switch *ds = bus->priv;
29
30 if (ds->phys_mii_mask & (1 << addr))
31 return ds->ops->phy_read(ds, addr, reg);
32
33 return 0xffff;
34}
35
36static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
37{
38 struct dsa_switch *ds = bus->priv;
39
40 if (ds->phys_mii_mask & (1 << addr))
41 return ds->ops->phy_write(ds, addr, reg, val);
42
43 return 0;
44}
45
46void dsa_slave_mii_bus_init(struct dsa_switch *ds)
47{
48 ds->slave_mii_bus->priv = (void *)ds;
49 ds->slave_mii_bus->name = "dsa slave smi";
50 ds->slave_mii_bus->read = dsa_slave_phy_read;
51 ds->slave_mii_bus->write = dsa_slave_phy_write;
52 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d",
53 ds->dst->index, ds->index);
54 ds->slave_mii_bus->parent = ds->dev;
55 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
56}
57
58
59
60static int dsa_slave_get_iflink(const struct net_device *dev)
61{
62 return dsa_slave_to_master(dev)->ifindex;
63}
64
65static int dsa_slave_open(struct net_device *dev)
66{
67 struct net_device *master = dsa_slave_to_master(dev);
68 struct dsa_port *dp = dsa_slave_to_port(dev);
69 int err;
70
71 if (!(master->flags & IFF_UP))
72 return -ENETDOWN;
73
74 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
75 err = dev_uc_add(master, dev->dev_addr);
76 if (err < 0)
77 goto out;
78 }
79
80 if (dev->flags & IFF_ALLMULTI) {
81 err = dev_set_allmulti(master, 1);
82 if (err < 0)
83 goto del_unicast;
84 }
85 if (dev->flags & IFF_PROMISC) {
86 err = dev_set_promiscuity(master, 1);
87 if (err < 0)
88 goto clear_allmulti;
89 }
90
91 err = dsa_port_enable_rt(dp, dev->phydev);
92 if (err)
93 goto clear_promisc;
94
95 return 0;
96
97clear_promisc:
98 if (dev->flags & IFF_PROMISC)
99 dev_set_promiscuity(master, -1);
100clear_allmulti:
101 if (dev->flags & IFF_ALLMULTI)
102 dev_set_allmulti(master, -1);
103del_unicast:
104 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
105 dev_uc_del(master, dev->dev_addr);
106out:
107 return err;
108}
109
110static int dsa_slave_close(struct net_device *dev)
111{
112 struct net_device *master = dsa_slave_to_master(dev);
113 struct dsa_port *dp = dsa_slave_to_port(dev);
114
115 dsa_port_disable_rt(dp);
116
117 dev_mc_unsync(master, dev);
118 dev_uc_unsync(master, dev);
119 if (dev->flags & IFF_ALLMULTI)
120 dev_set_allmulti(master, -1);
121 if (dev->flags & IFF_PROMISC)
122 dev_set_promiscuity(master, -1);
123
124 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
125 dev_uc_del(master, dev->dev_addr);
126
127 return 0;
128}
129
130static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
131{
132 struct net_device *master = dsa_slave_to_master(dev);
133 if (dev->flags & IFF_UP) {
134 if (change & IFF_ALLMULTI)
135 dev_set_allmulti(master,
136 dev->flags & IFF_ALLMULTI ? 1 : -1);
137 if (change & IFF_PROMISC)
138 dev_set_promiscuity(master,
139 dev->flags & IFF_PROMISC ? 1 : -1);
140 }
141}
142
143static void dsa_slave_set_rx_mode(struct net_device *dev)
144{
145 struct net_device *master = dsa_slave_to_master(dev);
146
147 dev_mc_sync(master, dev);
148 dev_uc_sync(master, dev);
149}
150
151static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
152{
153 struct net_device *master = dsa_slave_to_master(dev);
154 struct sockaddr *addr = a;
155 int err;
156
157 if (!is_valid_ether_addr(addr->sa_data))
158 return -EADDRNOTAVAIL;
159
160 if (!(dev->flags & IFF_UP))
161 goto out;
162
163 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
164 err = dev_uc_add(master, addr->sa_data);
165 if (err < 0)
166 return err;
167 }
168
169 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
170 dev_uc_del(master, dev->dev_addr);
171
172out:
173 ether_addr_copy(dev->dev_addr, addr->sa_data);
174
175 return 0;
176}
177
178struct dsa_slave_dump_ctx {
179 struct net_device *dev;
180 struct sk_buff *skb;
181 struct netlink_callback *cb;
182 int idx;
183};
184
185static int
186dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid,
187 bool is_static, void *data)
188{
189 struct dsa_slave_dump_ctx *dump = data;
190 u32 portid = NETLINK_CB(dump->cb->skb).portid;
191 u32 seq = dump->cb->nlh->nlmsg_seq;
192 struct nlmsghdr *nlh;
193 struct ndmsg *ndm;
194
195 if (dump->idx < dump->cb->args[2])
196 goto skip;
197
198 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
199 sizeof(*ndm), NLM_F_MULTI);
200 if (!nlh)
201 return -EMSGSIZE;
202
203 ndm = nlmsg_data(nlh);
204 ndm->ndm_family = AF_BRIDGE;
205 ndm->ndm_pad1 = 0;
206 ndm->ndm_pad2 = 0;
207 ndm->ndm_flags = NTF_SELF;
208 ndm->ndm_type = 0;
209 ndm->ndm_ifindex = dump->dev->ifindex;
210 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
211
212 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
213 goto nla_put_failure;
214
215 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
216 goto nla_put_failure;
217
218 nlmsg_end(dump->skb, nlh);
219
220skip:
221 dump->idx++;
222 return 0;
223
224nla_put_failure:
225 nlmsg_cancel(dump->skb, nlh);
226 return -EMSGSIZE;
227}
228
229static int
230dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
231 struct net_device *dev, struct net_device *filter_dev,
232 int *idx)
233{
234 struct dsa_port *dp = dsa_slave_to_port(dev);
235 struct dsa_slave_dump_ctx dump = {
236 .dev = dev,
237 .skb = skb,
238 .cb = cb,
239 .idx = *idx,
240 };
241 int err;
242
243 err = dsa_port_fdb_dump(dp, dsa_slave_port_fdb_do_dump, &dump);
244 *idx = dump.idx;
245
246 return err;
247}
248
249static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
250{
251 struct dsa_slave_priv *p = netdev_priv(dev);
252 struct dsa_switch *ds = p->dp->ds;
253 int port = p->dp->index;
254
255
256 switch (cmd) {
257 case SIOCGHWTSTAMP:
258 if (ds->ops->port_hwtstamp_get)
259 return ds->ops->port_hwtstamp_get(ds, port, ifr);
260 break;
261 case SIOCSHWTSTAMP:
262 if (ds->ops->port_hwtstamp_set)
263 return ds->ops->port_hwtstamp_set(ds, port, ifr);
264 break;
265 }
266
267 return phylink_mii_ioctl(p->dp->pl, ifr, cmd);
268}
269
270static int dsa_slave_port_attr_set(struct net_device *dev,
271 const struct switchdev_attr *attr,
272 struct switchdev_trans *trans)
273{
274 struct dsa_port *dp = dsa_slave_to_port(dev);
275 int ret;
276
277 switch (attr->id) {
278 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
279 ret = dsa_port_set_state(dp, attr->u.stp_state, trans);
280 break;
281 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
282 ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering,
283 trans);
284 break;
285 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
286 ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans);
287 break;
288 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
289 ret = dsa_port_pre_bridge_flags(dp, attr->u.brport_flags,
290 trans);
291 break;
292 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
293 ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, trans);
294 break;
295 case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER:
296 ret = dsa_port_mrouter(dp->cpu_dp, attr->u.mrouter, trans);
297 break;
298 default:
299 ret = -EOPNOTSUPP;
300 break;
301 }
302
303 return ret;
304}
305
306
307static int
308dsa_slave_vlan_check_for_8021q_uppers(struct net_device *slave,
309 const struct switchdev_obj_port_vlan *vlan)
310{
311 struct net_device *upper_dev;
312 struct list_head *iter;
313
314 netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
315 u16 vid;
316
317 if (!is_vlan_dev(upper_dev))
318 continue;
319
320 vid = vlan_dev_vlan_id(upper_dev);
321 if (vid >= vlan->vid_begin && vid <= vlan->vid_end)
322 return -EBUSY;
323 }
324
325 return 0;
326}
327
328static int dsa_slave_vlan_add(struct net_device *dev,
329 const struct switchdev_obj *obj,
330 struct switchdev_trans *trans)
331{
332 struct net_device *master = dsa_slave_to_master(dev);
333 struct dsa_port *dp = dsa_slave_to_port(dev);
334 struct switchdev_obj_port_vlan vlan;
335 int vid, err;
336
337 if (obj->orig_dev != dev)
338 return -EOPNOTSUPP;
339
340 if (dsa_port_skip_vlan_configuration(dp))
341 return 0;
342
343 vlan = *SWITCHDEV_OBJ_PORT_VLAN(obj);
344
345
346
347
348 if (trans->ph_prepare && br_vlan_enabled(dp->bridge_dev)) {
349 rcu_read_lock();
350 err = dsa_slave_vlan_check_for_8021q_uppers(dev, &vlan);
351 rcu_read_unlock();
352 if (err)
353 return err;
354 }
355
356 err = dsa_port_vlan_add(dp, &vlan, trans);
357 if (err)
358 return err;
359
360
361
362
363
364 vlan.flags &= ~BRIDGE_VLAN_INFO_PVID;
365
366 err = dsa_port_vlan_add(dp->cpu_dp, &vlan, trans);
367 if (err)
368 return err;
369
370 for (vid = vlan.vid_begin; vid <= vlan.vid_end; vid++) {
371 err = vlan_vid_add(master, htons(ETH_P_8021Q), vid);
372 if (err)
373 return err;
374 }
375
376 return 0;
377}
378
379static int dsa_slave_port_obj_add(struct net_device *dev,
380 const struct switchdev_obj *obj,
381 struct switchdev_trans *trans,
382 struct netlink_ext_ack *extack)
383{
384 struct dsa_port *dp = dsa_slave_to_port(dev);
385 int err;
386
387
388
389
390
391
392 switch (obj->id) {
393 case SWITCHDEV_OBJ_ID_PORT_MDB:
394 if (obj->orig_dev != dev)
395 return -EOPNOTSUPP;
396 err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
397 break;
398 case SWITCHDEV_OBJ_ID_HOST_MDB:
399
400
401
402 err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj),
403 trans);
404 break;
405 case SWITCHDEV_OBJ_ID_PORT_VLAN:
406 err = dsa_slave_vlan_add(dev, obj, trans);
407 break;
408 default:
409 err = -EOPNOTSUPP;
410 break;
411 }
412
413 return err;
414}
415
416static int dsa_slave_vlan_del(struct net_device *dev,
417 const struct switchdev_obj *obj)
418{
419 struct net_device *master = dsa_slave_to_master(dev);
420 struct dsa_port *dp = dsa_slave_to_port(dev);
421 struct switchdev_obj_port_vlan *vlan;
422 int vid, err;
423
424 if (obj->orig_dev != dev)
425 return -EOPNOTSUPP;
426
427 if (dsa_port_skip_vlan_configuration(dp))
428 return 0;
429
430 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
431
432
433
434
435 err = dsa_port_vlan_del(dp, vlan);
436 if (err)
437 return err;
438
439 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++)
440 vlan_vid_del(master, htons(ETH_P_8021Q), vid);
441
442 return 0;
443}
444
445static int dsa_slave_port_obj_del(struct net_device *dev,
446 const struct switchdev_obj *obj)
447{
448 struct dsa_port *dp = dsa_slave_to_port(dev);
449 int err;
450
451 switch (obj->id) {
452 case SWITCHDEV_OBJ_ID_PORT_MDB:
453 if (obj->orig_dev != dev)
454 return -EOPNOTSUPP;
455 err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
456 break;
457 case SWITCHDEV_OBJ_ID_HOST_MDB:
458
459
460
461 err = dsa_port_mdb_del(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj));
462 break;
463 case SWITCHDEV_OBJ_ID_PORT_VLAN:
464 err = dsa_slave_vlan_del(dev, obj);
465 break;
466 default:
467 err = -EOPNOTSUPP;
468 break;
469 }
470
471 return err;
472}
473
474static int dsa_slave_get_port_parent_id(struct net_device *dev,
475 struct netdev_phys_item_id *ppid)
476{
477 struct dsa_port *dp = dsa_slave_to_port(dev);
478 struct dsa_switch *ds = dp->ds;
479 struct dsa_switch_tree *dst = ds->dst;
480
481
482
483
484
485 if (dp->ds->devlink)
486 return -EOPNOTSUPP;
487
488 ppid->id_len = sizeof(dst->index);
489 memcpy(&ppid->id, &dst->index, ppid->id_len);
490
491 return 0;
492}
493
494static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev,
495 struct sk_buff *skb)
496{
497#ifdef CONFIG_NET_POLL_CONTROLLER
498 struct dsa_slave_priv *p = netdev_priv(dev);
499
500 return netpoll_send_skb(p->netpoll, skb);
501#else
502 BUG();
503 return NETDEV_TX_OK;
504#endif
505}
506
507static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p,
508 struct sk_buff *skb)
509{
510 struct dsa_switch *ds = p->dp->ds;
511 struct sk_buff *clone;
512 unsigned int type;
513
514 type = ptp_classify_raw(skb);
515 if (type == PTP_CLASS_NONE)
516 return;
517
518 if (!ds->ops->port_txtstamp)
519 return;
520
521 clone = skb_clone_sk(skb);
522 if (!clone)
523 return;
524
525 DSA_SKB_CB(skb)->clone = clone;
526
527 if (ds->ops->port_txtstamp(ds, p->dp->index, clone, type))
528 return;
529
530 kfree_skb(clone);
531}
532
533netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev)
534{
535
536
537
538 if (unlikely(netpoll_tx_running(dev)))
539 return dsa_slave_netpoll_send_skb(dev, skb);
540
541
542
543
544 skb->dev = dsa_slave_to_master(dev);
545 dev_queue_xmit(skb);
546
547 return NETDEV_TX_OK;
548}
549EXPORT_SYMBOL_GPL(dsa_enqueue_skb);
550
551static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
552{
553 struct dsa_slave_priv *p = netdev_priv(dev);
554 struct pcpu_sw_netstats *s;
555 struct sk_buff *nskb;
556
557 s = this_cpu_ptr(p->stats64);
558 u64_stats_update_begin(&s->syncp);
559 s->tx_packets++;
560 s->tx_bytes += skb->len;
561 u64_stats_update_end(&s->syncp);
562
563 DSA_SKB_CB(skb)->clone = NULL;
564
565
566
567
568 dsa_skb_tx_timestamp(p, skb);
569
570
571
572
573 nskb = p->xmit(skb, dev);
574 if (!nskb) {
575 kfree_skb(skb);
576 return NETDEV_TX_OK;
577 }
578
579 return dsa_enqueue_skb(nskb, dev);
580}
581
582
583
584static void dsa_slave_get_drvinfo(struct net_device *dev,
585 struct ethtool_drvinfo *drvinfo)
586{
587 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
588 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
589 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
590}
591
592static int dsa_slave_get_regs_len(struct net_device *dev)
593{
594 struct dsa_port *dp = dsa_slave_to_port(dev);
595 struct dsa_switch *ds = dp->ds;
596
597 if (ds->ops->get_regs_len)
598 return ds->ops->get_regs_len(ds, dp->index);
599
600 return -EOPNOTSUPP;
601}
602
603static void
604dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
605{
606 struct dsa_port *dp = dsa_slave_to_port(dev);
607 struct dsa_switch *ds = dp->ds;
608
609 if (ds->ops->get_regs)
610 ds->ops->get_regs(ds, dp->index, regs, _p);
611}
612
613static int dsa_slave_nway_reset(struct net_device *dev)
614{
615 struct dsa_port *dp = dsa_slave_to_port(dev);
616
617 return phylink_ethtool_nway_reset(dp->pl);
618}
619
620static int dsa_slave_get_eeprom_len(struct net_device *dev)
621{
622 struct dsa_port *dp = dsa_slave_to_port(dev);
623 struct dsa_switch *ds = dp->ds;
624
625 if (ds->cd && ds->cd->eeprom_len)
626 return ds->cd->eeprom_len;
627
628 if (ds->ops->get_eeprom_len)
629 return ds->ops->get_eeprom_len(ds);
630
631 return 0;
632}
633
634static int dsa_slave_get_eeprom(struct net_device *dev,
635 struct ethtool_eeprom *eeprom, u8 *data)
636{
637 struct dsa_port *dp = dsa_slave_to_port(dev);
638 struct dsa_switch *ds = dp->ds;
639
640 if (ds->ops->get_eeprom)
641 return ds->ops->get_eeprom(ds, eeprom, data);
642
643 return -EOPNOTSUPP;
644}
645
646static int dsa_slave_set_eeprom(struct net_device *dev,
647 struct ethtool_eeprom *eeprom, u8 *data)
648{
649 struct dsa_port *dp = dsa_slave_to_port(dev);
650 struct dsa_switch *ds = dp->ds;
651
652 if (ds->ops->set_eeprom)
653 return ds->ops->set_eeprom(ds, eeprom, data);
654
655 return -EOPNOTSUPP;
656}
657
658static void dsa_slave_get_strings(struct net_device *dev,
659 uint32_t stringset, uint8_t *data)
660{
661 struct dsa_port *dp = dsa_slave_to_port(dev);
662 struct dsa_switch *ds = dp->ds;
663
664 if (stringset == ETH_SS_STATS) {
665 int len = ETH_GSTRING_LEN;
666
667 strncpy(data, "tx_packets", len);
668 strncpy(data + len, "tx_bytes", len);
669 strncpy(data + 2 * len, "rx_packets", len);
670 strncpy(data + 3 * len, "rx_bytes", len);
671 if (ds->ops->get_strings)
672 ds->ops->get_strings(ds, dp->index, stringset,
673 data + 4 * len);
674 }
675}
676
677static void dsa_slave_get_ethtool_stats(struct net_device *dev,
678 struct ethtool_stats *stats,
679 uint64_t *data)
680{
681 struct dsa_port *dp = dsa_slave_to_port(dev);
682 struct dsa_slave_priv *p = netdev_priv(dev);
683 struct dsa_switch *ds = dp->ds;
684 struct pcpu_sw_netstats *s;
685 unsigned int start;
686 int i;
687
688 for_each_possible_cpu(i) {
689 u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
690
691 s = per_cpu_ptr(p->stats64, i);
692 do {
693 start = u64_stats_fetch_begin_irq(&s->syncp);
694 tx_packets = s->tx_packets;
695 tx_bytes = s->tx_bytes;
696 rx_packets = s->rx_packets;
697 rx_bytes = s->rx_bytes;
698 } while (u64_stats_fetch_retry_irq(&s->syncp, start));
699 data[0] += tx_packets;
700 data[1] += tx_bytes;
701 data[2] += rx_packets;
702 data[3] += rx_bytes;
703 }
704 if (ds->ops->get_ethtool_stats)
705 ds->ops->get_ethtool_stats(ds, dp->index, data + 4);
706}
707
708static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
709{
710 struct dsa_port *dp = dsa_slave_to_port(dev);
711 struct dsa_switch *ds = dp->ds;
712
713 if (sset == ETH_SS_STATS) {
714 int count;
715
716 count = 4;
717 if (ds->ops->get_sset_count)
718 count += ds->ops->get_sset_count(ds, dp->index, sset);
719
720 return count;
721 }
722
723 return -EOPNOTSUPP;
724}
725
726static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
727{
728 struct dsa_port *dp = dsa_slave_to_port(dev);
729 struct dsa_switch *ds = dp->ds;
730
731 phylink_ethtool_get_wol(dp->pl, w);
732
733 if (ds->ops->get_wol)
734 ds->ops->get_wol(ds, dp->index, w);
735}
736
737static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
738{
739 struct dsa_port *dp = dsa_slave_to_port(dev);
740 struct dsa_switch *ds = dp->ds;
741 int ret = -EOPNOTSUPP;
742
743 phylink_ethtool_set_wol(dp->pl, w);
744
745 if (ds->ops->set_wol)
746 ret = ds->ops->set_wol(ds, dp->index, w);
747
748 return ret;
749}
750
751static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
752{
753 struct dsa_port *dp = dsa_slave_to_port(dev);
754 struct dsa_switch *ds = dp->ds;
755 int ret;
756
757
758 if (!dev->phydev || !dp->pl)
759 return -ENODEV;
760
761 if (!ds->ops->set_mac_eee)
762 return -EOPNOTSUPP;
763
764 ret = ds->ops->set_mac_eee(ds, dp->index, e);
765 if (ret)
766 return ret;
767
768 return phylink_ethtool_set_eee(dp->pl, e);
769}
770
771static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
772{
773 struct dsa_port *dp = dsa_slave_to_port(dev);
774 struct dsa_switch *ds = dp->ds;
775 int ret;
776
777
778 if (!dev->phydev || !dp->pl)
779 return -ENODEV;
780
781 if (!ds->ops->get_mac_eee)
782 return -EOPNOTSUPP;
783
784 ret = ds->ops->get_mac_eee(ds, dp->index, e);
785 if (ret)
786 return ret;
787
788 return phylink_ethtool_get_eee(dp->pl, e);
789}
790
791static int dsa_slave_get_link_ksettings(struct net_device *dev,
792 struct ethtool_link_ksettings *cmd)
793{
794 struct dsa_port *dp = dsa_slave_to_port(dev);
795
796 return phylink_ethtool_ksettings_get(dp->pl, cmd);
797}
798
799static int dsa_slave_set_link_ksettings(struct net_device *dev,
800 const struct ethtool_link_ksettings *cmd)
801{
802 struct dsa_port *dp = dsa_slave_to_port(dev);
803
804 return phylink_ethtool_ksettings_set(dp->pl, cmd);
805}
806
807static void dsa_slave_get_pauseparam(struct net_device *dev,
808 struct ethtool_pauseparam *pause)
809{
810 struct dsa_port *dp = dsa_slave_to_port(dev);
811
812 phylink_ethtool_get_pauseparam(dp->pl, pause);
813}
814
815static int dsa_slave_set_pauseparam(struct net_device *dev,
816 struct ethtool_pauseparam *pause)
817{
818 struct dsa_port *dp = dsa_slave_to_port(dev);
819
820 return phylink_ethtool_set_pauseparam(dp->pl, pause);
821}
822
823#ifdef CONFIG_NET_POLL_CONTROLLER
824static int dsa_slave_netpoll_setup(struct net_device *dev,
825 struct netpoll_info *ni)
826{
827 struct net_device *master = dsa_slave_to_master(dev);
828 struct dsa_slave_priv *p = netdev_priv(dev);
829 struct netpoll *netpoll;
830 int err = 0;
831
832 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
833 if (!netpoll)
834 return -ENOMEM;
835
836 err = __netpoll_setup(netpoll, master);
837 if (err) {
838 kfree(netpoll);
839 goto out;
840 }
841
842 p->netpoll = netpoll;
843out:
844 return err;
845}
846
847static void dsa_slave_netpoll_cleanup(struct net_device *dev)
848{
849 struct dsa_slave_priv *p = netdev_priv(dev);
850 struct netpoll *netpoll = p->netpoll;
851
852 if (!netpoll)
853 return;
854
855 p->netpoll = NULL;
856
857 __netpoll_free(netpoll);
858}
859
860static void dsa_slave_poll_controller(struct net_device *dev)
861{
862}
863#endif
864
865static int dsa_slave_get_phys_port_name(struct net_device *dev,
866 char *name, size_t len)
867{
868 struct dsa_port *dp = dsa_slave_to_port(dev);
869
870
871
872
873
874 if (dp->ds->devlink)
875 return -EOPNOTSUPP;
876
877 if (snprintf(name, len, "p%d", dp->index) >= len)
878 return -EINVAL;
879
880 return 0;
881}
882
883static struct dsa_mall_tc_entry *
884dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie)
885{
886 struct dsa_slave_priv *p = netdev_priv(dev);
887 struct dsa_mall_tc_entry *mall_tc_entry;
888
889 list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list)
890 if (mall_tc_entry->cookie == cookie)
891 return mall_tc_entry;
892
893 return NULL;
894}
895
896static int
897dsa_slave_add_cls_matchall_mirred(struct net_device *dev,
898 struct tc_cls_matchall_offload *cls,
899 bool ingress)
900{
901 struct dsa_port *dp = dsa_slave_to_port(dev);
902 struct dsa_slave_priv *p = netdev_priv(dev);
903 struct dsa_mall_mirror_tc_entry *mirror;
904 struct dsa_mall_tc_entry *mall_tc_entry;
905 struct dsa_switch *ds = dp->ds;
906 struct flow_action_entry *act;
907 struct dsa_port *to_dp;
908 int err;
909
910 if (!ds->ops->port_mirror_add)
911 return -EOPNOTSUPP;
912
913 if (!flow_action_basic_hw_stats_check(&cls->rule->action,
914 cls->common.extack))
915 return -EOPNOTSUPP;
916
917 act = &cls->rule->action.entries[0];
918
919 if (!act->dev)
920 return -EINVAL;
921
922 if (!dsa_slave_dev_check(act->dev))
923 return -EOPNOTSUPP;
924
925 mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
926 if (!mall_tc_entry)
927 return -ENOMEM;
928
929 mall_tc_entry->cookie = cls->cookie;
930 mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
931 mirror = &mall_tc_entry->mirror;
932
933 to_dp = dsa_slave_to_port(act->dev);
934
935 mirror->to_local_port = to_dp->index;
936 mirror->ingress = ingress;
937
938 err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
939 if (err) {
940 kfree(mall_tc_entry);
941 return err;
942 }
943
944 list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
945
946 return err;
947}
948
949static int
950dsa_slave_add_cls_matchall_police(struct net_device *dev,
951 struct tc_cls_matchall_offload *cls,
952 bool ingress)
953{
954 struct netlink_ext_ack *extack = cls->common.extack;
955 struct dsa_port *dp = dsa_slave_to_port(dev);
956 struct dsa_slave_priv *p = netdev_priv(dev);
957 struct dsa_mall_policer_tc_entry *policer;
958 struct dsa_mall_tc_entry *mall_tc_entry;
959 struct dsa_switch *ds = dp->ds;
960 struct flow_action_entry *act;
961 int err;
962
963 if (!ds->ops->port_policer_add) {
964 NL_SET_ERR_MSG_MOD(extack,
965 "Policing offload not implemented");
966 return -EOPNOTSUPP;
967 }
968
969 if (!ingress) {
970 NL_SET_ERR_MSG_MOD(extack,
971 "Only supported on ingress qdisc");
972 return -EOPNOTSUPP;
973 }
974
975 if (!flow_action_basic_hw_stats_check(&cls->rule->action,
976 cls->common.extack))
977 return -EOPNOTSUPP;
978
979 list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list) {
980 if (mall_tc_entry->type == DSA_PORT_MALL_POLICER) {
981 NL_SET_ERR_MSG_MOD(extack,
982 "Only one port policer allowed");
983 return -EEXIST;
984 }
985 }
986
987 act = &cls->rule->action.entries[0];
988
989 mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
990 if (!mall_tc_entry)
991 return -ENOMEM;
992
993 mall_tc_entry->cookie = cls->cookie;
994 mall_tc_entry->type = DSA_PORT_MALL_POLICER;
995 policer = &mall_tc_entry->policer;
996 policer->rate_bytes_per_sec = act->police.rate_bytes_ps;
997 policer->burst = act->police.burst;
998
999 err = ds->ops->port_policer_add(ds, dp->index, policer);
1000 if (err) {
1001 kfree(mall_tc_entry);
1002 return err;
1003 }
1004
1005 list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
1006
1007 return err;
1008}
1009
1010static int dsa_slave_add_cls_matchall(struct net_device *dev,
1011 struct tc_cls_matchall_offload *cls,
1012 bool ingress)
1013{
1014 int err = -EOPNOTSUPP;
1015
1016 if (cls->common.protocol == htons(ETH_P_ALL) &&
1017 flow_offload_has_one_action(&cls->rule->action) &&
1018 cls->rule->action.entries[0].id == FLOW_ACTION_MIRRED)
1019 err = dsa_slave_add_cls_matchall_mirred(dev, cls, ingress);
1020 else if (flow_offload_has_one_action(&cls->rule->action) &&
1021 cls->rule->action.entries[0].id == FLOW_ACTION_POLICE)
1022 err = dsa_slave_add_cls_matchall_police(dev, cls, ingress);
1023
1024 return err;
1025}
1026
1027static void dsa_slave_del_cls_matchall(struct net_device *dev,
1028 struct tc_cls_matchall_offload *cls)
1029{
1030 struct dsa_port *dp = dsa_slave_to_port(dev);
1031 struct dsa_mall_tc_entry *mall_tc_entry;
1032 struct dsa_switch *ds = dp->ds;
1033
1034 mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie);
1035 if (!mall_tc_entry)
1036 return;
1037
1038 list_del(&mall_tc_entry->list);
1039
1040 switch (mall_tc_entry->type) {
1041 case DSA_PORT_MALL_MIRROR:
1042 if (ds->ops->port_mirror_del)
1043 ds->ops->port_mirror_del(ds, dp->index,
1044 &mall_tc_entry->mirror);
1045 break;
1046 case DSA_PORT_MALL_POLICER:
1047 if (ds->ops->port_policer_del)
1048 ds->ops->port_policer_del(ds, dp->index);
1049 break;
1050 default:
1051 WARN_ON(1);
1052 }
1053
1054 kfree(mall_tc_entry);
1055}
1056
1057static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev,
1058 struct tc_cls_matchall_offload *cls,
1059 bool ingress)
1060{
1061 if (cls->common.chain_index)
1062 return -EOPNOTSUPP;
1063
1064 switch (cls->command) {
1065 case TC_CLSMATCHALL_REPLACE:
1066 return dsa_slave_add_cls_matchall(dev, cls, ingress);
1067 case TC_CLSMATCHALL_DESTROY:
1068 dsa_slave_del_cls_matchall(dev, cls);
1069 return 0;
1070 default:
1071 return -EOPNOTSUPP;
1072 }
1073}
1074
1075static int dsa_slave_add_cls_flower(struct net_device *dev,
1076 struct flow_cls_offload *cls,
1077 bool ingress)
1078{
1079 struct dsa_port *dp = dsa_slave_to_port(dev);
1080 struct dsa_switch *ds = dp->ds;
1081 int port = dp->index;
1082
1083 if (!ds->ops->cls_flower_add)
1084 return -EOPNOTSUPP;
1085
1086 return ds->ops->cls_flower_add(ds, port, cls, ingress);
1087}
1088
1089static int dsa_slave_del_cls_flower(struct net_device *dev,
1090 struct flow_cls_offload *cls,
1091 bool ingress)
1092{
1093 struct dsa_port *dp = dsa_slave_to_port(dev);
1094 struct dsa_switch *ds = dp->ds;
1095 int port = dp->index;
1096
1097 if (!ds->ops->cls_flower_del)
1098 return -EOPNOTSUPP;
1099
1100 return ds->ops->cls_flower_del(ds, port, cls, ingress);
1101}
1102
1103static int dsa_slave_stats_cls_flower(struct net_device *dev,
1104 struct flow_cls_offload *cls,
1105 bool ingress)
1106{
1107 struct dsa_port *dp = dsa_slave_to_port(dev);
1108 struct dsa_switch *ds = dp->ds;
1109 int port = dp->index;
1110
1111 if (!ds->ops->cls_flower_stats)
1112 return -EOPNOTSUPP;
1113
1114 return ds->ops->cls_flower_stats(ds, port, cls, ingress);
1115}
1116
1117static int dsa_slave_setup_tc_cls_flower(struct net_device *dev,
1118 struct flow_cls_offload *cls,
1119 bool ingress)
1120{
1121 switch (cls->command) {
1122 case FLOW_CLS_REPLACE:
1123 return dsa_slave_add_cls_flower(dev, cls, ingress);
1124 case FLOW_CLS_DESTROY:
1125 return dsa_slave_del_cls_flower(dev, cls, ingress);
1126 case FLOW_CLS_STATS:
1127 return dsa_slave_stats_cls_flower(dev, cls, ingress);
1128 default:
1129 return -EOPNOTSUPP;
1130 }
1131}
1132
1133static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
1134 void *cb_priv, bool ingress)
1135{
1136 struct net_device *dev = cb_priv;
1137
1138 if (!tc_can_offload(dev))
1139 return -EOPNOTSUPP;
1140
1141 switch (type) {
1142 case TC_SETUP_CLSMATCHALL:
1143 return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress);
1144 case TC_SETUP_CLSFLOWER:
1145 return dsa_slave_setup_tc_cls_flower(dev, type_data, ingress);
1146 default:
1147 return -EOPNOTSUPP;
1148 }
1149}
1150
1151static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type,
1152 void *type_data, void *cb_priv)
1153{
1154 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true);
1155}
1156
1157static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type,
1158 void *type_data, void *cb_priv)
1159{
1160 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false);
1161}
1162
1163static LIST_HEAD(dsa_slave_block_cb_list);
1164
1165static int dsa_slave_setup_tc_block(struct net_device *dev,
1166 struct flow_block_offload *f)
1167{
1168 struct flow_block_cb *block_cb;
1169 flow_setup_cb_t *cb;
1170
1171 if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
1172 cb = dsa_slave_setup_tc_block_cb_ig;
1173 else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS)
1174 cb = dsa_slave_setup_tc_block_cb_eg;
1175 else
1176 return -EOPNOTSUPP;
1177
1178 f->driver_block_list = &dsa_slave_block_cb_list;
1179
1180 switch (f->command) {
1181 case FLOW_BLOCK_BIND:
1182 if (flow_block_cb_is_busy(cb, dev, &dsa_slave_block_cb_list))
1183 return -EBUSY;
1184
1185 block_cb = flow_block_cb_alloc(cb, dev, dev, NULL);
1186 if (IS_ERR(block_cb))
1187 return PTR_ERR(block_cb);
1188
1189 flow_block_cb_add(block_cb, f);
1190 list_add_tail(&block_cb->driver_list, &dsa_slave_block_cb_list);
1191 return 0;
1192 case FLOW_BLOCK_UNBIND:
1193 block_cb = flow_block_cb_lookup(f->block, cb, dev);
1194 if (!block_cb)
1195 return -ENOENT;
1196
1197 flow_block_cb_remove(block_cb, f);
1198 list_del(&block_cb->driver_list);
1199 return 0;
1200 default:
1201 return -EOPNOTSUPP;
1202 }
1203}
1204
1205static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
1206 void *type_data)
1207{
1208 struct dsa_port *dp = dsa_slave_to_port(dev);
1209 struct dsa_switch *ds = dp->ds;
1210
1211 if (type == TC_SETUP_BLOCK)
1212 return dsa_slave_setup_tc_block(dev, type_data);
1213
1214 if (!ds->ops->port_setup_tc)
1215 return -EOPNOTSUPP;
1216
1217 return ds->ops->port_setup_tc(ds, dp->index, type, type_data);
1218}
1219
1220static void dsa_slave_get_stats64(struct net_device *dev,
1221 struct rtnl_link_stats64 *stats)
1222{
1223 struct dsa_slave_priv *p = netdev_priv(dev);
1224
1225 netdev_stats_to_stats64(stats, &dev->stats);
1226 dev_fetch_sw_netstats(stats, p->stats64);
1227}
1228
1229static int dsa_slave_get_rxnfc(struct net_device *dev,
1230 struct ethtool_rxnfc *nfc, u32 *rule_locs)
1231{
1232 struct dsa_port *dp = dsa_slave_to_port(dev);
1233 struct dsa_switch *ds = dp->ds;
1234
1235 if (!ds->ops->get_rxnfc)
1236 return -EOPNOTSUPP;
1237
1238 return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs);
1239}
1240
1241static int dsa_slave_set_rxnfc(struct net_device *dev,
1242 struct ethtool_rxnfc *nfc)
1243{
1244 struct dsa_port *dp = dsa_slave_to_port(dev);
1245 struct dsa_switch *ds = dp->ds;
1246
1247 if (!ds->ops->set_rxnfc)
1248 return -EOPNOTSUPP;
1249
1250 return ds->ops->set_rxnfc(ds, dp->index, nfc);
1251}
1252
1253static int dsa_slave_get_ts_info(struct net_device *dev,
1254 struct ethtool_ts_info *ts)
1255{
1256 struct dsa_slave_priv *p = netdev_priv(dev);
1257 struct dsa_switch *ds = p->dp->ds;
1258
1259 if (!ds->ops->get_ts_info)
1260 return -EOPNOTSUPP;
1261
1262 return ds->ops->get_ts_info(ds, p->dp->index, ts);
1263}
1264
1265static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
1266 u16 vid)
1267{
1268 struct net_device *master = dsa_slave_to_master(dev);
1269 struct dsa_port *dp = dsa_slave_to_port(dev);
1270 struct switchdev_obj_port_vlan vlan = {
1271 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
1272 .vid_begin = vid,
1273 .vid_end = vid,
1274
1275 .flags = 0,
1276 };
1277 struct switchdev_trans trans;
1278 int ret;
1279
1280
1281 trans.ph_prepare = true;
1282 ret = dsa_port_vlan_add(dp, &vlan, &trans);
1283 if (ret)
1284 return ret;
1285
1286 trans.ph_prepare = false;
1287 ret = dsa_port_vlan_add(dp, &vlan, &trans);
1288 if (ret)
1289 return ret;
1290
1291
1292 trans.ph_prepare = true;
1293 ret = dsa_port_vlan_add(dp->cpu_dp, &vlan, &trans);
1294 if (ret)
1295 return ret;
1296
1297 trans.ph_prepare = false;
1298 ret = dsa_port_vlan_add(dp->cpu_dp, &vlan, &trans);
1299 if (ret)
1300 return ret;
1301
1302 return vlan_vid_add(master, proto, vid);
1303}
1304
1305static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
1306 u16 vid)
1307{
1308 struct net_device *master = dsa_slave_to_master(dev);
1309 struct dsa_port *dp = dsa_slave_to_port(dev);
1310 struct switchdev_obj_port_vlan vlan = {
1311 .vid_begin = vid,
1312 .vid_end = vid,
1313
1314 .flags = 0,
1315 };
1316 int err;
1317
1318
1319
1320
1321 err = dsa_port_vlan_del(dp, &vlan);
1322 if (err)
1323 return err;
1324
1325 vlan_vid_del(master, proto, vid);
1326
1327 return 0;
1328}
1329
1330struct dsa_hw_port {
1331 struct list_head list;
1332 struct net_device *dev;
1333 int old_mtu;
1334};
1335
1336static int dsa_hw_port_list_set_mtu(struct list_head *hw_port_list, int mtu)
1337{
1338 const struct dsa_hw_port *p;
1339 int err;
1340
1341 list_for_each_entry(p, hw_port_list, list) {
1342 if (p->dev->mtu == mtu)
1343 continue;
1344
1345 err = dev_set_mtu(p->dev, mtu);
1346 if (err)
1347 goto rollback;
1348 }
1349
1350 return 0;
1351
1352rollback:
1353 list_for_each_entry_continue_reverse(p, hw_port_list, list) {
1354 if (p->dev->mtu == p->old_mtu)
1355 continue;
1356
1357 if (dev_set_mtu(p->dev, p->old_mtu))
1358 netdev_err(p->dev, "Failed to restore MTU\n");
1359 }
1360
1361 return err;
1362}
1363
1364static void dsa_hw_port_list_free(struct list_head *hw_port_list)
1365{
1366 struct dsa_hw_port *p, *n;
1367
1368 list_for_each_entry_safe(p, n, hw_port_list, list)
1369 kfree(p);
1370}
1371
1372
1373static void dsa_bridge_mtu_normalization(struct dsa_port *dp)
1374{
1375 struct list_head hw_port_list;
1376 struct dsa_switch_tree *dst;
1377 int min_mtu = ETH_MAX_MTU;
1378 struct dsa_port *other_dp;
1379 int err;
1380
1381 if (!dp->ds->mtu_enforcement_ingress)
1382 return;
1383
1384 if (!dp->bridge_dev)
1385 return;
1386
1387 INIT_LIST_HEAD(&hw_port_list);
1388
1389
1390
1391
1392 list_for_each_entry(dst, &dsa_tree_list, list) {
1393 list_for_each_entry(other_dp, &dst->ports, list) {
1394 struct dsa_hw_port *hw_port;
1395 struct net_device *slave;
1396
1397 if (other_dp->type != DSA_PORT_TYPE_USER)
1398 continue;
1399
1400 if (other_dp->bridge_dev != dp->bridge_dev)
1401 continue;
1402
1403 if (!other_dp->ds->mtu_enforcement_ingress)
1404 continue;
1405
1406 slave = other_dp->slave;
1407
1408 if (min_mtu > slave->mtu)
1409 min_mtu = slave->mtu;
1410
1411 hw_port = kzalloc(sizeof(*hw_port), GFP_KERNEL);
1412 if (!hw_port)
1413 goto out;
1414
1415 hw_port->dev = slave;
1416 hw_port->old_mtu = slave->mtu;
1417
1418 list_add(&hw_port->list, &hw_port_list);
1419 }
1420 }
1421
1422
1423
1424
1425
1426 err = dsa_hw_port_list_set_mtu(&hw_port_list, dp->slave->mtu);
1427 if (!err)
1428 goto out;
1429
1430
1431
1432
1433
1434 dsa_hw_port_list_set_mtu(&hw_port_list, min_mtu);
1435
1436out:
1437 dsa_hw_port_list_free(&hw_port_list);
1438}
1439
1440static int dsa_slave_change_mtu(struct net_device *dev, int new_mtu)
1441{
1442 struct net_device *master = dsa_slave_to_master(dev);
1443 struct dsa_port *dp = dsa_slave_to_port(dev);
1444 struct dsa_slave_priv *p = netdev_priv(dev);
1445 struct dsa_switch *ds = p->dp->ds;
1446 struct dsa_port *cpu_dp;
1447 int port = p->dp->index;
1448 int largest_mtu = 0;
1449 int new_master_mtu;
1450 int old_master_mtu;
1451 int mtu_limit;
1452 int cpu_mtu;
1453 int err, i;
1454
1455 if (!ds->ops->port_change_mtu)
1456 return -EOPNOTSUPP;
1457
1458 for (i = 0; i < ds->num_ports; i++) {
1459 int slave_mtu;
1460
1461 if (!dsa_is_user_port(ds, i))
1462 continue;
1463
1464
1465
1466
1467
1468 if (!dsa_to_port(ds, i)->slave)
1469 continue;
1470
1471
1472
1473
1474 if (i == port)
1475 slave_mtu = new_mtu;
1476 else
1477 slave_mtu = dsa_to_port(ds, i)->slave->mtu;
1478
1479 if (largest_mtu < slave_mtu)
1480 largest_mtu = slave_mtu;
1481 }
1482
1483 cpu_dp = dsa_to_port(ds, port)->cpu_dp;
1484
1485 mtu_limit = min_t(int, master->max_mtu, dev->max_mtu);
1486 old_master_mtu = master->mtu;
1487 new_master_mtu = largest_mtu + cpu_dp->tag_ops->overhead;
1488 if (new_master_mtu > mtu_limit)
1489 return -ERANGE;
1490
1491
1492
1493
1494 cpu_mtu = largest_mtu;
1495
1496
1497 if (new_master_mtu != old_master_mtu) {
1498 err = dev_set_mtu(master, new_master_mtu);
1499 if (err < 0)
1500 goto out_master_failed;
1501
1502
1503
1504
1505 err = dsa_port_mtu_change(cpu_dp, cpu_mtu, true);
1506 if (err)
1507 goto out_cpu_failed;
1508 }
1509
1510 err = dsa_port_mtu_change(dp, new_mtu, false);
1511 if (err)
1512 goto out_port_failed;
1513
1514 dev->mtu = new_mtu;
1515
1516 dsa_bridge_mtu_normalization(dp);
1517
1518 return 0;
1519
1520out_port_failed:
1521 if (new_master_mtu != old_master_mtu)
1522 dsa_port_mtu_change(cpu_dp, old_master_mtu -
1523 cpu_dp->tag_ops->overhead,
1524 true);
1525out_cpu_failed:
1526 if (new_master_mtu != old_master_mtu)
1527 dev_set_mtu(master, old_master_mtu);
1528out_master_failed:
1529 return err;
1530}
1531
1532static const struct ethtool_ops dsa_slave_ethtool_ops = {
1533 .get_drvinfo = dsa_slave_get_drvinfo,
1534 .get_regs_len = dsa_slave_get_regs_len,
1535 .get_regs = dsa_slave_get_regs,
1536 .nway_reset = dsa_slave_nway_reset,
1537 .get_link = ethtool_op_get_link,
1538 .get_eeprom_len = dsa_slave_get_eeprom_len,
1539 .get_eeprom = dsa_slave_get_eeprom,
1540 .set_eeprom = dsa_slave_set_eeprom,
1541 .get_strings = dsa_slave_get_strings,
1542 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
1543 .get_sset_count = dsa_slave_get_sset_count,
1544 .set_wol = dsa_slave_set_wol,
1545 .get_wol = dsa_slave_get_wol,
1546 .set_eee = dsa_slave_set_eee,
1547 .get_eee = dsa_slave_get_eee,
1548 .get_link_ksettings = dsa_slave_get_link_ksettings,
1549 .set_link_ksettings = dsa_slave_set_link_ksettings,
1550 .get_pauseparam = dsa_slave_get_pauseparam,
1551 .set_pauseparam = dsa_slave_set_pauseparam,
1552 .get_rxnfc = dsa_slave_get_rxnfc,
1553 .set_rxnfc = dsa_slave_set_rxnfc,
1554 .get_ts_info = dsa_slave_get_ts_info,
1555};
1556
1557
1558int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
1559 struct net_device *dev,
1560 const unsigned char *addr, u16 vid,
1561 u16 flags,
1562 struct netlink_ext_ack *extack)
1563{
1564 struct dsa_port *dp = dsa_slave_to_port(dev);
1565
1566 return dsa_port_fdb_add(dp, addr, vid);
1567}
1568
1569int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
1570 struct net_device *dev,
1571 const unsigned char *addr, u16 vid)
1572{
1573 struct dsa_port *dp = dsa_slave_to_port(dev);
1574
1575 return dsa_port_fdb_del(dp, addr, vid);
1576}
1577
1578static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev)
1579{
1580 struct dsa_port *dp = dsa_slave_to_port(dev);
1581
1582 return dp->ds->devlink ? &dp->devlink_port : NULL;
1583}
1584
1585static const struct net_device_ops dsa_slave_netdev_ops = {
1586 .ndo_open = dsa_slave_open,
1587 .ndo_stop = dsa_slave_close,
1588 .ndo_start_xmit = dsa_slave_xmit,
1589 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
1590 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
1591 .ndo_set_mac_address = dsa_slave_set_mac_address,
1592 .ndo_fdb_add = dsa_legacy_fdb_add,
1593 .ndo_fdb_del = dsa_legacy_fdb_del,
1594 .ndo_fdb_dump = dsa_slave_fdb_dump,
1595 .ndo_do_ioctl = dsa_slave_ioctl,
1596 .ndo_get_iflink = dsa_slave_get_iflink,
1597#ifdef CONFIG_NET_POLL_CONTROLLER
1598 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
1599 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
1600 .ndo_poll_controller = dsa_slave_poll_controller,
1601#endif
1602 .ndo_get_phys_port_name = dsa_slave_get_phys_port_name,
1603 .ndo_setup_tc = dsa_slave_setup_tc,
1604 .ndo_get_stats64 = dsa_slave_get_stats64,
1605 .ndo_get_port_parent_id = dsa_slave_get_port_parent_id,
1606 .ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
1607 .ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
1608 .ndo_get_devlink_port = dsa_slave_get_devlink_port,
1609 .ndo_change_mtu = dsa_slave_change_mtu,
1610};
1611
1612static struct device_type dsa_type = {
1613 .name = "dsa",
1614};
1615
1616void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up)
1617{
1618 const struct dsa_port *dp = dsa_to_port(ds, port);
1619
1620 if (dp->pl)
1621 phylink_mac_change(dp->pl, up);
1622}
1623EXPORT_SYMBOL_GPL(dsa_port_phylink_mac_change);
1624
1625static void dsa_slave_phylink_fixed_state(struct phylink_config *config,
1626 struct phylink_link_state *state)
1627{
1628 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1629 struct dsa_switch *ds = dp->ds;
1630
1631
1632
1633
1634 ds->ops->phylink_fixed_state(ds, dp->index, state);
1635}
1636
1637
1638static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr)
1639{
1640 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1641 struct dsa_switch *ds = dp->ds;
1642
1643 slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr);
1644 if (!slave_dev->phydev) {
1645 netdev_err(slave_dev, "no phy at %d\n", addr);
1646 return -ENODEV;
1647 }
1648
1649 return phylink_connect_phy(dp->pl, slave_dev->phydev);
1650}
1651
1652static int dsa_slave_phy_setup(struct net_device *slave_dev)
1653{
1654 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1655 struct device_node *port_dn = dp->dn;
1656 struct dsa_switch *ds = dp->ds;
1657 phy_interface_t mode;
1658 u32 phy_flags = 0;
1659 int ret;
1660
1661 ret = of_get_phy_mode(port_dn, &mode);
1662 if (ret)
1663 mode = PHY_INTERFACE_MODE_NA;
1664
1665 dp->pl_config.dev = &slave_dev->dev;
1666 dp->pl_config.type = PHYLINK_NETDEV;
1667
1668
1669
1670
1671
1672 if (ds->ops->phylink_fixed_state) {
1673 dp->pl_config.get_fixed_state = dsa_slave_phylink_fixed_state;
1674 dp->pl_config.poll_fixed_state = true;
1675 }
1676
1677 dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), mode,
1678 &dsa_port_phylink_mac_ops);
1679 if (IS_ERR(dp->pl)) {
1680 netdev_err(slave_dev,
1681 "error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
1682 return PTR_ERR(dp->pl);
1683 }
1684
1685 if (ds->ops->get_phy_flags)
1686 phy_flags = ds->ops->get_phy_flags(ds, dp->index);
1687
1688 ret = phylink_of_phy_connect(dp->pl, port_dn, phy_flags);
1689 if (ret == -ENODEV && ds->slave_mii_bus) {
1690
1691
1692
1693 ret = dsa_slave_phy_connect(slave_dev, dp->index);
1694 if (ret) {
1695 netdev_err(slave_dev,
1696 "failed to connect to port %d: %d\n",
1697 dp->index, ret);
1698 phylink_destroy(dp->pl);
1699 return ret;
1700 }
1701 }
1702
1703 return ret;
1704}
1705
1706static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1707static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1708 struct netdev_queue *txq,
1709 void *_unused)
1710{
1711 lockdep_set_class(&txq->_xmit_lock,
1712 &dsa_slave_netdev_xmit_lock_key);
1713}
1714
1715int dsa_slave_suspend(struct net_device *slave_dev)
1716{
1717 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1718
1719 if (!netif_running(slave_dev))
1720 return 0;
1721
1722 netif_device_detach(slave_dev);
1723
1724 rtnl_lock();
1725 phylink_stop(dp->pl);
1726 rtnl_unlock();
1727
1728 return 0;
1729}
1730
1731int dsa_slave_resume(struct net_device *slave_dev)
1732{
1733 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1734
1735 if (!netif_running(slave_dev))
1736 return 0;
1737
1738 netif_device_attach(slave_dev);
1739
1740 rtnl_lock();
1741 phylink_start(dp->pl);
1742 rtnl_unlock();
1743
1744 return 0;
1745}
1746
1747static void dsa_slave_notify(struct net_device *dev, unsigned long val)
1748{
1749 struct net_device *master = dsa_slave_to_master(dev);
1750 struct dsa_port *dp = dsa_slave_to_port(dev);
1751 struct dsa_notifier_register_info rinfo = {
1752 .switch_number = dp->ds->index,
1753 .port_number = dp->index,
1754 .master = master,
1755 .info.dev = dev,
1756 };
1757
1758 call_dsa_notifiers(val, dev, &rinfo.info);
1759}
1760
1761int dsa_slave_create(struct dsa_port *port)
1762{
1763 const struct dsa_port *cpu_dp = port->cpu_dp;
1764 struct net_device *master = cpu_dp->master;
1765 struct dsa_switch *ds = port->ds;
1766 const char *name = port->name;
1767 struct net_device *slave_dev;
1768 struct dsa_slave_priv *p;
1769 int ret;
1770
1771 if (!ds->num_tx_queues)
1772 ds->num_tx_queues = 1;
1773
1774 slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name,
1775 NET_NAME_UNKNOWN, ether_setup,
1776 ds->num_tx_queues, 1);
1777 if (slave_dev == NULL)
1778 return -ENOMEM;
1779
1780 slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
1781 if (ds->ops->port_vlan_add && ds->ops->port_vlan_del)
1782 slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1783 slave_dev->hw_features |= NETIF_F_HW_TC;
1784 slave_dev->features |= NETIF_F_LLTX;
1785 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1786 if (!IS_ERR_OR_NULL(port->mac))
1787 ether_addr_copy(slave_dev->dev_addr, port->mac);
1788 else
1789 eth_hw_addr_inherit(slave_dev, master);
1790 slave_dev->priv_flags |= IFF_NO_QUEUE;
1791 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1792 if (ds->ops->port_max_mtu)
1793 slave_dev->max_mtu = ds->ops->port_max_mtu(ds, port->index);
1794 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1795
1796 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1797 NULL);
1798
1799 SET_NETDEV_DEV(slave_dev, port->ds->dev);
1800 slave_dev->dev.of_node = port->dn;
1801 slave_dev->vlan_features = master->vlan_features;
1802
1803 p = netdev_priv(slave_dev);
1804 p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
1805 if (!p->stats64) {
1806 free_netdev(slave_dev);
1807 return -ENOMEM;
1808 }
1809
1810 ret = gro_cells_init(&p->gcells, slave_dev);
1811 if (ret)
1812 goto out_free;
1813
1814 p->dp = port;
1815 INIT_LIST_HEAD(&p->mall_tc_list);
1816 p->xmit = cpu_dp->tag_ops->xmit;
1817 port->slave = slave_dev;
1818
1819 rtnl_lock();
1820 ret = dsa_slave_change_mtu(slave_dev, ETH_DATA_LEN);
1821 rtnl_unlock();
1822 if (ret && ret != -EOPNOTSUPP)
1823 dev_warn(ds->dev, "nonfatal error %d setting MTU on port %d\n",
1824 ret, port->index);
1825
1826 netif_carrier_off(slave_dev);
1827
1828 ret = dsa_slave_phy_setup(slave_dev);
1829 if (ret) {
1830 netdev_err(slave_dev,
1831 "error %d setting up PHY for tree %d, switch %d, port %d\n",
1832 ret, ds->dst->index, ds->index, port->index);
1833 goto out_gcells;
1834 }
1835
1836 dsa_slave_notify(slave_dev, DSA_PORT_REGISTER);
1837
1838 rtnl_lock();
1839
1840 ret = register_netdevice(slave_dev);
1841 if (ret) {
1842 netdev_err(master, "error %d registering interface %s\n",
1843 ret, slave_dev->name);
1844 rtnl_unlock();
1845 goto out_phy;
1846 }
1847
1848 ret = netdev_upper_dev_link(master, slave_dev, NULL);
1849
1850 rtnl_unlock();
1851
1852 if (ret)
1853 goto out_unregister;
1854
1855 return 0;
1856
1857out_unregister:
1858 unregister_netdev(slave_dev);
1859out_phy:
1860 rtnl_lock();
1861 phylink_disconnect_phy(p->dp->pl);
1862 rtnl_unlock();
1863 phylink_destroy(p->dp->pl);
1864out_gcells:
1865 gro_cells_destroy(&p->gcells);
1866out_free:
1867 free_percpu(p->stats64);
1868 free_netdev(slave_dev);
1869 port->slave = NULL;
1870 return ret;
1871}
1872
1873void dsa_slave_destroy(struct net_device *slave_dev)
1874{
1875 struct net_device *master = dsa_slave_to_master(slave_dev);
1876 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1877 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1878
1879 netif_carrier_off(slave_dev);
1880 rtnl_lock();
1881 netdev_upper_dev_unlink(master, slave_dev);
1882 unregister_netdevice(slave_dev);
1883 phylink_disconnect_phy(dp->pl);
1884 rtnl_unlock();
1885
1886 dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER);
1887 phylink_destroy(dp->pl);
1888 gro_cells_destroy(&p->gcells);
1889 free_percpu(p->stats64);
1890 free_netdev(slave_dev);
1891}
1892
1893bool dsa_slave_dev_check(const struct net_device *dev)
1894{
1895 return dev->netdev_ops == &dsa_slave_netdev_ops;
1896}
1897
1898static int dsa_slave_changeupper(struct net_device *dev,
1899 struct netdev_notifier_changeupper_info *info)
1900{
1901 struct dsa_port *dp = dsa_slave_to_port(dev);
1902 int err = NOTIFY_DONE;
1903
1904 if (netif_is_bridge_master(info->upper_dev)) {
1905 if (info->linking) {
1906 err = dsa_port_bridge_join(dp, info->upper_dev);
1907 if (!err)
1908 dsa_bridge_mtu_normalization(dp);
1909 err = notifier_from_errno(err);
1910 } else {
1911 dsa_port_bridge_leave(dp, info->upper_dev);
1912 err = NOTIFY_OK;
1913 }
1914 }
1915
1916 return err;
1917}
1918
1919static int
1920dsa_prevent_bridging_8021q_upper(struct net_device *dev,
1921 struct netdev_notifier_changeupper_info *info)
1922{
1923 struct netlink_ext_ack *ext_ack;
1924 struct net_device *slave;
1925 struct dsa_port *dp;
1926
1927 ext_ack = netdev_notifier_info_to_extack(&info->info);
1928
1929 if (!is_vlan_dev(dev))
1930 return NOTIFY_DONE;
1931
1932 slave = vlan_dev_real_dev(dev);
1933 if (!dsa_slave_dev_check(slave))
1934 return NOTIFY_DONE;
1935
1936 dp = dsa_slave_to_port(slave);
1937 if (!dp->bridge_dev)
1938 return NOTIFY_DONE;
1939
1940
1941 if (br_vlan_enabled(dp->bridge_dev) &&
1942 netif_is_bridge_master(info->upper_dev) && info->linking) {
1943 NL_SET_ERR_MSG_MOD(ext_ack,
1944 "Cannot enslave VLAN device into VLAN aware bridge");
1945 return notifier_from_errno(-EINVAL);
1946 }
1947
1948 return NOTIFY_DONE;
1949}
1950
1951static int
1952dsa_slave_check_8021q_upper(struct net_device *dev,
1953 struct netdev_notifier_changeupper_info *info)
1954{
1955 struct dsa_port *dp = dsa_slave_to_port(dev);
1956 struct net_device *br = dp->bridge_dev;
1957 struct bridge_vlan_info br_info;
1958 struct netlink_ext_ack *extack;
1959 int err = NOTIFY_DONE;
1960 u16 vid;
1961
1962 if (!br || !br_vlan_enabled(br))
1963 return NOTIFY_DONE;
1964
1965 extack = netdev_notifier_info_to_extack(&info->info);
1966 vid = vlan_dev_vlan_id(info->upper_dev);
1967
1968
1969
1970
1971
1972 err = br_vlan_get_info(br, vid, &br_info);
1973 if (err == 0) {
1974 NL_SET_ERR_MSG_MOD(extack,
1975 "This VLAN is already configured by the bridge");
1976 return notifier_from_errno(-EBUSY);
1977 }
1978
1979 return NOTIFY_DONE;
1980}
1981
1982static int dsa_slave_netdevice_event(struct notifier_block *nb,
1983 unsigned long event, void *ptr)
1984{
1985 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1986
1987 switch (event) {
1988 case NETDEV_PRECHANGEUPPER: {
1989 struct netdev_notifier_changeupper_info *info = ptr;
1990
1991 if (!dsa_slave_dev_check(dev))
1992 return dsa_prevent_bridging_8021q_upper(dev, ptr);
1993
1994 if (is_vlan_dev(info->upper_dev))
1995 return dsa_slave_check_8021q_upper(dev, ptr);
1996 break;
1997 }
1998 case NETDEV_CHANGEUPPER:
1999 if (!dsa_slave_dev_check(dev))
2000 return NOTIFY_DONE;
2001
2002 return dsa_slave_changeupper(dev, ptr);
2003 }
2004
2005 return NOTIFY_DONE;
2006}
2007
2008struct dsa_switchdev_event_work {
2009 struct work_struct work;
2010 struct switchdev_notifier_fdb_info fdb_info;
2011 struct net_device *dev;
2012 unsigned long event;
2013};
2014
2015static void dsa_slave_switchdev_event_work(struct work_struct *work)
2016{
2017 struct dsa_switchdev_event_work *switchdev_work =
2018 container_of(work, struct dsa_switchdev_event_work, work);
2019 struct net_device *dev = switchdev_work->dev;
2020 struct switchdev_notifier_fdb_info *fdb_info;
2021 struct dsa_port *dp = dsa_slave_to_port(dev);
2022 int err;
2023
2024 rtnl_lock();
2025 switch (switchdev_work->event) {
2026 case SWITCHDEV_FDB_ADD_TO_DEVICE:
2027 fdb_info = &switchdev_work->fdb_info;
2028 if (!fdb_info->added_by_user)
2029 break;
2030
2031 err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid);
2032 if (err) {
2033 netdev_dbg(dev, "fdb add failed err=%d\n", err);
2034 break;
2035 }
2036 fdb_info->offloaded = true;
2037 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
2038 &fdb_info->info, NULL);
2039 break;
2040
2041 case SWITCHDEV_FDB_DEL_TO_DEVICE:
2042 fdb_info = &switchdev_work->fdb_info;
2043 if (!fdb_info->added_by_user)
2044 break;
2045
2046 err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid);
2047 if (err) {
2048 netdev_dbg(dev, "fdb del failed err=%d\n", err);
2049 dev_close(dev);
2050 }
2051 break;
2052 }
2053 rtnl_unlock();
2054
2055 kfree(switchdev_work->fdb_info.addr);
2056 kfree(switchdev_work);
2057 dev_put(dev);
2058}
2059
2060static int
2061dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work *
2062 switchdev_work,
2063 const struct switchdev_notifier_fdb_info *
2064 fdb_info)
2065{
2066 memcpy(&switchdev_work->fdb_info, fdb_info,
2067 sizeof(switchdev_work->fdb_info));
2068 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
2069 if (!switchdev_work->fdb_info.addr)
2070 return -ENOMEM;
2071 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
2072 fdb_info->addr);
2073 return 0;
2074}
2075
2076
2077static int dsa_slave_switchdev_event(struct notifier_block *unused,
2078 unsigned long event, void *ptr)
2079{
2080 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2081 struct dsa_switchdev_event_work *switchdev_work;
2082 int err;
2083
2084 if (event == SWITCHDEV_PORT_ATTR_SET) {
2085 err = switchdev_handle_port_attr_set(dev, ptr,
2086 dsa_slave_dev_check,
2087 dsa_slave_port_attr_set);
2088 return notifier_from_errno(err);
2089 }
2090
2091 if (!dsa_slave_dev_check(dev))
2092 return NOTIFY_DONE;
2093
2094 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
2095 if (!switchdev_work)
2096 return NOTIFY_BAD;
2097
2098 INIT_WORK(&switchdev_work->work,
2099 dsa_slave_switchdev_event_work);
2100 switchdev_work->dev = dev;
2101 switchdev_work->event = event;
2102
2103 switch (event) {
2104 case SWITCHDEV_FDB_ADD_TO_DEVICE:
2105 case SWITCHDEV_FDB_DEL_TO_DEVICE:
2106 if (dsa_slave_switchdev_fdb_work_init(switchdev_work, ptr))
2107 goto err_fdb_work_init;
2108 dev_hold(dev);
2109 break;
2110 default:
2111 kfree(switchdev_work);
2112 return NOTIFY_DONE;
2113 }
2114
2115 dsa_schedule_work(&switchdev_work->work);
2116 return NOTIFY_OK;
2117
2118err_fdb_work_init:
2119 kfree(switchdev_work);
2120 return NOTIFY_BAD;
2121}
2122
2123static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused,
2124 unsigned long event, void *ptr)
2125{
2126 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2127 int err;
2128
2129 switch (event) {
2130 case SWITCHDEV_PORT_OBJ_ADD:
2131 err = switchdev_handle_port_obj_add(dev, ptr,
2132 dsa_slave_dev_check,
2133 dsa_slave_port_obj_add);
2134 return notifier_from_errno(err);
2135 case SWITCHDEV_PORT_OBJ_DEL:
2136 err = switchdev_handle_port_obj_del(dev, ptr,
2137 dsa_slave_dev_check,
2138 dsa_slave_port_obj_del);
2139 return notifier_from_errno(err);
2140 case SWITCHDEV_PORT_ATTR_SET:
2141 err = switchdev_handle_port_attr_set(dev, ptr,
2142 dsa_slave_dev_check,
2143 dsa_slave_port_attr_set);
2144 return notifier_from_errno(err);
2145 }
2146
2147 return NOTIFY_DONE;
2148}
2149
2150static struct notifier_block dsa_slave_nb __read_mostly = {
2151 .notifier_call = dsa_slave_netdevice_event,
2152};
2153
2154static struct notifier_block dsa_slave_switchdev_notifier = {
2155 .notifier_call = dsa_slave_switchdev_event,
2156};
2157
2158static struct notifier_block dsa_slave_switchdev_blocking_notifier = {
2159 .notifier_call = dsa_slave_switchdev_blocking_event,
2160};
2161
2162int dsa_slave_register_notifier(void)
2163{
2164 struct notifier_block *nb;
2165 int err;
2166
2167 err = register_netdevice_notifier(&dsa_slave_nb);
2168 if (err)
2169 return err;
2170
2171 err = register_switchdev_notifier(&dsa_slave_switchdev_notifier);
2172 if (err)
2173 goto err_switchdev_nb;
2174
2175 nb = &dsa_slave_switchdev_blocking_notifier;
2176 err = register_switchdev_blocking_notifier(nb);
2177 if (err)
2178 goto err_switchdev_blocking_nb;
2179
2180 return 0;
2181
2182err_switchdev_blocking_nb:
2183 unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
2184err_switchdev_nb:
2185 unregister_netdevice_notifier(&dsa_slave_nb);
2186 return err;
2187}
2188
2189void dsa_slave_unregister_notifier(void)
2190{
2191 struct notifier_block *nb;
2192 int err;
2193
2194 nb = &dsa_slave_switchdev_blocking_notifier;
2195 err = unregister_switchdev_blocking_notifier(nb);
2196 if (err)
2197 pr_err("DSA: failed to unregister switchdev blocking notifier (%d)\n", err);
2198
2199 err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
2200 if (err)
2201 pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err);
2202
2203 err = unregister_netdevice_notifier(&dsa_slave_nb);
2204 if (err)
2205 pr_err("DSA: failed to unregister slave notifier (%d)\n", err);
2206}
2207
