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switchdev: add new switchdev_port_bridge_getlink
[linux-2.6-block.git] / drivers / net / team / team.c
CommitLineData
3d249d4c 1/*
0d572e45 2 * drivers/net/team/team.c - Network team device driver
3d249d4c
JP		 3 * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10
11#include <linux/kernel.h>
12#include <linux/types.h>
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/rcupdate.h>
17#include <linux/errno.h>
18#include <linux/ctype.h>
19#include <linux/notifier.h>
20#include <linux/netdevice.h>
bd2d0837 21#include <linux/netpoll.h>
87002b03 22#include <linux/if_vlan.h>
3d249d4c
JP		 23#include <linux/if_arp.h>
24#include <linux/socket.h>
25#include <linux/etherdevice.h>
26#include <linux/rtnetlink.h>
27#include <net/rtnetlink.h>
28#include <net/genetlink.h>
29#include <net/netlink.h>
6c85f2bd 30#include <net/sch_generic.h>
a16a8ee7 31#include <net/switchdev.h>
7f51c587 32#include <generated/utsrelease.h>
3d249d4c
JP		 33#include <linux/if_team.h>
34
35#define DRV_NAME "team"
36
37
38/**********
39 * Helpers
40 **********/
41
42#define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT)
43
44static struct team_port *team_port_get_rcu(const struct net_device *dev)
45{
57e59563 46 return rcu_dereference(dev->rx_handler_data);
3d249d4c
JP		 47}
48
49static struct team_port *team_port_get_rtnl(const struct net_device *dev)
50{
51 struct team_port *port = rtnl_dereference(dev->rx_handler_data);
52
53 return team_port_exists(dev) ? port : NULL;
54}
55
56/*
1d76efe1 57 * Since the ability to change device address for open port device is tested in
3d249d4c
JP		 58 * team_port_add, this function can be called without control of return value
59 */
1d76efe1
JP		 60static int __set_port_dev_addr(struct net_device *port_dev,
61 const unsigned char *dev_addr)
3d249d4c
JP		 62{
63 struct sockaddr addr;
64
1d76efe1
JP		 65 memcpy(addr.sa_data, dev_addr, port_dev->addr_len);
66 addr.sa_family = port_dev->type;
3d249d4c
JP		 67 return dev_set_mac_address(port_dev, &addr);
68}
69
1d76efe1 70static int team_port_set_orig_dev_addr(struct team_port *port)
3d249d4c 71{
1d76efe1 72 return __set_port_dev_addr(port->dev, port->orig.dev_addr);
3d249d4c
JP		 73}
74
acbba0d0
JP		 75static int team_port_set_team_dev_addr(struct team *team,
76 struct team_port *port)
3d249d4c 77{
acbba0d0 78 return __set_port_dev_addr(port->dev, team->dev->dev_addr);
3d249d4c 79}
acbba0d0
JP		 80
81int team_modeop_port_enter(struct team *team, struct team_port *port)
82{
83 return team_port_set_team_dev_addr(team, port);
84}
85EXPORT_SYMBOL(team_modeop_port_enter);
86
87void team_modeop_port_change_dev_addr(struct team *team,
88 struct team_port *port)
89{
90 team_port_set_team_dev_addr(team, port);
91}
92EXPORT_SYMBOL(team_modeop_port_change_dev_addr);
3d249d4c 93
71472ec1
JP		 94static void team_refresh_port_linkup(struct team_port *port)
95{
96 port->linkup = port->user.linkup_enabled ? port->user.linkup :
97 port->state.linkup;
98}
3d249d4c 99
0f1aad2b 100
3d249d4c
JP		 101/*******************
102 * Options handling
103 *******************/
104
80f7c668
JP		 105struct team_option_inst { /* One for each option instance */
106 struct list_head list;
01048d9a 107 struct list_head tmp_list;
80f7c668 108 struct team_option *option;
85d59a87 109 struct team_option_inst_info info;
80f7c668
JP		 110 bool changed;
111 bool removed;
112};
113
114static struct team_option *__team_find_option(struct team *team,
115 const char *opt_name)
358b8382
JP		 116{
117 struct team_option *option;
118
119 list_for_each_entry(option, &team->option_list, list) {
120 if (strcmp(option->name, opt_name) == 0)
121 return option;
122 }
123 return NULL;
124}
125
80f7c668
JP		 126static void __team_option_inst_del(struct team_option_inst *opt_inst)
127{
128 list_del(&opt_inst->list);
129 kfree(opt_inst);
130}
131
132static void __team_option_inst_del_option(struct team *team,
133 struct team_option *option)
134{
135 struct team_option_inst *opt_inst, *tmp;
136
137 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
138 if (opt_inst->option == option)
139 __team_option_inst_del(opt_inst);
140 }
141}
142
b1303326
JP		 143static int __team_option_inst_add(struct team *team, struct team_option *option,
144 struct team_port *port)
145{
146 struct team_option_inst *opt_inst;
147 unsigned int array_size;
148 unsigned int i;
85d59a87 149 int err;
b1303326
JP		 150
151 array_size = option->array_size;
152 if (!array_size)
153 array_size = 1; /* No array but still need one instance */
154
155 for (i = 0; i < array_size; i++) {
156 opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL);
157 if (!opt_inst)
158 return -ENOMEM;
159 opt_inst->option = option;
85d59a87
JP		 160 opt_inst->info.port = port;
161 opt_inst->info.array_index = i;
b1303326
JP		 162 opt_inst->changed = true;
163 opt_inst->removed = false;
164 list_add_tail(&opt_inst->list, &team->option_inst_list);
85d59a87
JP		 165 if (option->init) {
166 err = option->init(team, &opt_inst->info);
167 if (err)
168 return err;
169 }
170
b1303326
JP		 171 }
172 return 0;
173}
174
80f7c668
JP		 175static int __team_option_inst_add_option(struct team *team,
176 struct team_option *option)
177{
80f7c668
JP		 178 int err;
179
b1303326 180 if (!option->per_port) {
f88725ff 181 err = __team_option_inst_add(team, option, NULL);
b1303326
JP		 182 if (err)
183 goto inst_del_option;
184 }
80f7c668
JP		 185 return 0;
186
187inst_del_option:
188 __team_option_inst_del_option(team, option);
189 return err;
190}
191
192static void __team_option_inst_mark_removed_option(struct team *team,
193 struct team_option *option)
194{
195 struct team_option_inst *opt_inst;
196
197 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
198 if (opt_inst->option == option) {
199 opt_inst->changed = true;
200 opt_inst->removed = true;
201 }
202 }
203}
204
205static void __team_option_inst_del_port(struct team *team,
206 struct team_port *port)
207{
208 struct team_option_inst *opt_inst, *tmp;
209
210 list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) {
211 if (opt_inst->option->per_port &&
85d59a87 212 opt_inst->info.port == port)
80f7c668
JP		 213 __team_option_inst_del(opt_inst);
214 }
215}
216
217static int __team_option_inst_add_port(struct team *team,
218 struct team_port *port)
219{
220 struct team_option *option;
221 int err;
222
223 list_for_each_entry(option, &team->option_list, list) {
224 if (!option->per_port)
225 continue;
226 err = __team_option_inst_add(team, option, port);
227 if (err)
228 goto inst_del_port;
229 }
230 return 0;
231
232inst_del_port:
233 __team_option_inst_del_port(team, port);
234 return err;
235}
236
237static void __team_option_inst_mark_removed_port(struct team *team,
238 struct team_port *port)
239{
240 struct team_option_inst *opt_inst;
241
242 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
85d59a87 243 if (opt_inst->info.port == port) {
80f7c668
JP		 244 opt_inst->changed = true;
245 opt_inst->removed = true;
246 }
247 }
248}
249
250static int __team_options_register(struct team *team,
251 const struct team_option *option,
252 size_t option_count)
3d249d4c
JP		 253{
254 int i;
2bba19ff 255 struct team_option **dst_opts;
358b8382 256 int err;
3d249d4c 257
2bba19ff
JP		 258 dst_opts = kzalloc(sizeof(struct team_option *) * option_count,
259 GFP_KERNEL);
260 if (!dst_opts)
261 return -ENOMEM;
358b8382 262 for (i = 0; i < option_count; i++, option++) {
358b8382
JP		 263 if (__team_find_option(team, option->name)) {
264 err = -EEXIST;
80f7c668 265 goto alloc_rollback;
358b8382 266 }
f8a15af0
JP		 267 dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL);
268 if (!dst_opts[i]) {
358b8382 269 err = -ENOMEM;
80f7c668 270 goto alloc_rollback;
358b8382 271 }
358b8382
JP		 272 }
273
b82b9183 274 for (i = 0; i < option_count; i++) {
80f7c668
JP		 275 err = __team_option_inst_add_option(team, dst_opts[i]);
276 if (err)
277 goto inst_rollback;
358b8382 278 list_add_tail(&dst_opts[i]->list, &team->option_list);
b82b9183 279 }
358b8382 280
2bba19ff 281 kfree(dst_opts);
358b8382
JP		 282 return 0;
283
80f7c668
JP		 284inst_rollback:
285 for (i--; i >= 0; i--)
286 __team_option_inst_del_option(team, dst_opts[i]);
287
288 i = option_count - 1;
289alloc_rollback:
290 for (i--; i >= 0; i--)
358b8382
JP		 291 kfree(dst_opts[i]);
292
2bba19ff 293 kfree(dst_opts);
358b8382 294 return err;
3d249d4c 295}
358b8382 296
b82b9183
JP		 297static void __team_options_mark_removed(struct team *team,
298 const struct team_option *option,
299 size_t option_count)
300{
301 int i;
302
303 for (i = 0; i < option_count; i++, option++) {
304 struct team_option *del_opt;
3d249d4c 305
b82b9183 306 del_opt = __team_find_option(team, option->name);
80f7c668
JP		 307 if (del_opt)
308 __team_option_inst_mark_removed_option(team, del_opt);
b82b9183
JP		 309 }
310}
3d249d4c
JP		 311
312static void __team_options_unregister(struct team *team,
358b8382 313 const struct team_option *option,
3d249d4c
JP		 314 size_t option_count)
315{
316 int i;
317
358b8382
JP		 318 for (i = 0; i < option_count; i++, option++) {
319 struct team_option *del_opt;
320
321 del_opt = __team_find_option(team, option->name);
322 if (del_opt) {
80f7c668 323 __team_option_inst_del_option(team, del_opt);
358b8382
JP		 324 list_del(&del_opt->list);
325 kfree(del_opt);
326 }
327 }
3d249d4c
JP		 328}
329
b82b9183
JP		 330static void __team_options_change_check(struct team *team);
331
332int team_options_register(struct team *team,
333 const struct team_option *option,
334 size_t option_count)
335{
336 int err;
337
338 err = __team_options_register(team, option, option_count);
339 if (err)
340 return err;
341 __team_options_change_check(team);
342 return 0;
343}
344EXPORT_SYMBOL(team_options_register);
345
358b8382
JP		 346void team_options_unregister(struct team *team,
347 const struct team_option *option,
3d249d4c
JP		 348 size_t option_count)
349{
b82b9183
JP		 350 __team_options_mark_removed(team, option, option_count);
351 __team_options_change_check(team);
3d249d4c 352 __team_options_unregister(team, option, option_count);
3d249d4c
JP		 353}
354EXPORT_SYMBOL(team_options_unregister);
355
80f7c668
JP		 356static int team_option_get(struct team *team,
357 struct team_option_inst *opt_inst,
358 struct team_gsetter_ctx *ctx)
359{
f82b959d
JP		 360 if (!opt_inst->option->getter)
361 return -EOPNOTSUPP;
80f7c668
JP		 362 return opt_inst->option->getter(team, ctx);
363}
364
365static int team_option_set(struct team *team,
366 struct team_option_inst *opt_inst,
367 struct team_gsetter_ctx *ctx)
3d249d4c 368{
f82b959d
JP		 369 if (!opt_inst->option->setter)
370 return -EOPNOTSUPP;
2fcdb2c9 371 return opt_inst->option->setter(team, ctx);
3d249d4c
JP		 372}
373
0f1aad2b
JP		 374void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info)
375{
376 struct team_option_inst *opt_inst;
377
378 opt_inst = container_of(opt_inst_info, struct team_option_inst, info);
379 opt_inst->changed = true;
380}
381EXPORT_SYMBOL(team_option_inst_set_change);
382
383void team_options_change_check(struct team *team)
384{
385 __team_options_change_check(team);
386}
387EXPORT_SYMBOL(team_options_change_check);
388
389
3d249d4c
JP		 390/****************
391 * Mode handling
392 ****************/
393
394static LIST_HEAD(mode_list);
395static DEFINE_SPINLOCK(mode_list_lock);
396
0402788a
JP		 397struct team_mode_item {
398 struct list_head list;
399 const struct team_mode *mode;
400};
401
402static struct team_mode_item *__find_mode(const char *kind)
3d249d4c 403{
0402788a 404 struct team_mode_item *mitem;
3d249d4c 405
0402788a
JP		 406 list_for_each_entry(mitem, &mode_list, list) {
407 if (strcmp(mitem->mode->kind, kind) == 0)
408 return mitem;
3d249d4c
JP		 409 }
410 return NULL;
411}
412
413static bool is_good_mode_name(const char *name)
414{
415 while (*name != '\0') {
416 if (!isalpha(*name) && !isdigit(*name) && *name != '_')
417 return false;
418 name++;
419 }
420 return true;
421}
422
0402788a 423int team_mode_register(const struct team_mode *mode)
3d249d4c
JP		 424{
425 int err = 0;
0402788a 426 struct team_mode_item *mitem;
3d249d4c
JP		 427
428 if (!is_good_mode_name(mode->kind) ||
429 mode->priv_size > TEAM_MODE_PRIV_SIZE)
430 return -EINVAL;
0402788a
JP		 431
432 mitem = kmalloc(sizeof(*mitem), GFP_KERNEL);
433 if (!mitem)
434 return -ENOMEM;
435
3d249d4c
JP		 436 spin_lock(&mode_list_lock);
437 if (__find_mode(mode->kind)) {
438 err = -EEXIST;
0402788a 439 kfree(mitem);
3d249d4c
JP		 440 goto unlock;
441 }
0402788a
JP		 442 mitem->mode = mode;
443 list_add_tail(&mitem->list, &mode_list);
3d249d4c
JP		 444unlock:
445 spin_unlock(&mode_list_lock);
446 return err;
447}
448EXPORT_SYMBOL(team_mode_register);
449
0402788a 450void team_mode_unregister(const struct team_mode *mode)
3d249d4c 451{
0402788a
JP		 452 struct team_mode_item *mitem;
453
3d249d4c 454 spin_lock(&mode_list_lock);
0402788a
JP		 455 mitem = __find_mode(mode->kind);
456 if (mitem) {
457 list_del_init(&mitem->list);
458 kfree(mitem);
459 }
3d249d4c 460 spin_unlock(&mode_list_lock);
3d249d4c
JP		 461}
462EXPORT_SYMBOL(team_mode_unregister);
463
0402788a 464static const struct team_mode *team_mode_get(const char *kind)
3d249d4c 465{
0402788a
JP		 466 struct team_mode_item *mitem;
467 const struct team_mode *mode = NULL;
3d249d4c
JP		 468
469 spin_lock(&mode_list_lock);
0402788a
JP		 470 mitem = __find_mode(kind);
471 if (!mitem) {
3d249d4c
JP		 472 spin_unlock(&mode_list_lock);
473 request_module("team-mode-%s", kind);
474 spin_lock(&mode_list_lock);
0402788a 475 mitem = __find_mode(kind);
3d249d4c 476 }
0402788a
JP		 477 if (mitem) {
478 mode = mitem->mode;
3d249d4c
JP		 479 if (!try_module_get(mode->owner))
480 mode = NULL;
0402788a 481 }
3d249d4c
JP		 482
483 spin_unlock(&mode_list_lock);
484 return mode;
485}
486
487static void team_mode_put(const struct team_mode *mode)
488{
489 module_put(mode->owner);
490}
491
492static bool team_dummy_transmit(struct team *team, struct sk_buff *skb)
493{
494 dev_kfree_skb_any(skb);
495 return false;
496}
497
2ea46599 498static rx_handler_result_t team_dummy_receive(struct team *team,
499 struct team_port *port,
500 struct sk_buff *skb)
3d249d4c
JP		 501{
502 return RX_HANDLER_ANOTHER;
503}
504
d299cd51
JP		 505static const struct team_mode __team_no_mode = {
506 .kind = "*NOMODE*",
507};
508
509static bool team_is_mode_set(struct team *team)
510{
511 return team->mode != &__team_no_mode;
512}
513
514static void team_set_no_mode(struct team *team)
515{
e185483e 516 team->user_carrier_enabled = false;
d299cd51
JP		 517 team->mode = &__team_no_mode;
518}
519
735d381f 520static void team_adjust_ops(struct team *team)
3d249d4c
JP		 521{
522 /*
523 * To avoid checks in rx/tx skb paths, ensure here that non-null and
524 * correct ops are always set.
525 */
526
735d381f 527 if (!team->en_port_count || !team_is_mode_set(team) ||
122bb046 528 !team->mode->ops->transmit)
3d249d4c
JP		 529 team->ops.transmit = team_dummy_transmit;
530 else
531 team->ops.transmit = team->mode->ops->transmit;
532
735d381f 533 if (!team->en_port_count || !team_is_mode_set(team) ||
122bb046 534 !team->mode->ops->receive)
3d249d4c
JP		 535 team->ops.receive = team_dummy_receive;
536 else
537 team->ops.receive = team->mode->ops->receive;
538}
539
540/*
541 * We can benefit from the fact that it's ensured no port is present
542 * at the time of mode change. Therefore no packets are in fly so there's no
543 * need to set mode operations in any special way.
544 */
545static int __team_change_mode(struct team *team,
546 const struct team_mode *new_mode)
547{
548 /* Check if mode was previously set and do cleanup if so */
d299cd51 549 if (team_is_mode_set(team)) {
3d249d4c
JP		 550 void (*exit_op)(struct team *team) = team->ops.exit;
551
552 /* Clear ops area so no callback is called any longer */
553 memset(&team->ops, 0, sizeof(struct team_mode_ops));
554 team_adjust_ops(team);
555
556 if (exit_op)
557 exit_op(team);
558 team_mode_put(team->mode);
d299cd51 559 team_set_no_mode(team);
3d249d4c
JP		 560 /* zero private data area */
561 memset(&team->mode_priv, 0,
562 sizeof(struct team) - offsetof(struct team, mode_priv));
563 }
564
565 if (!new_mode)
566 return 0;
567
568 if (new_mode->ops->init) {
569 int err;
570
571 err = new_mode->ops->init(team);
572 if (err)
573 return err;
574 }
575
576 team->mode = new_mode;
577 memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops));
578 team_adjust_ops(team);
579
580 return 0;
581}
582
583static int team_change_mode(struct team *team, const char *kind)
584{
0402788a 585 const struct team_mode *new_mode;
3d249d4c
JP		 586 struct net_device *dev = team->dev;
587 int err;
588
589 if (!list_empty(&team->port_list)) {
590 netdev_err(dev, "No ports can be present during mode change\n");
591 return -EBUSY;
592 }
593
d299cd51 594 if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) {
3d249d4c
JP		 595 netdev_err(dev, "Unable to change to the same mode the team is in\n");
596 return -EINVAL;
597 }
598
599 new_mode = team_mode_get(kind);
600 if (!new_mode) {
601 netdev_err(dev, "Mode \"%s\" not found\n", kind);
602 return -EINVAL;
603 }
604
605 err = __team_change_mode(team, new_mode);
606 if (err) {
607 netdev_err(dev, "Failed to change to mode \"%s\"\n", kind);
608 team_mode_put(new_mode);
609 return err;
610 }
611
612 netdev_info(dev, "Mode changed to \"%s\"\n", kind);
613 return 0;
614}
615
616
fc423ff0
JP		 617/*********************
618 * Peers notification
619 *********************/
620
621static void team_notify_peers_work(struct work_struct *work)
622{
623 struct team *team;
b0d11b42 624 int val;
fc423ff0
JP		 625
626 team = container_of(work, struct team, notify_peers.dw.work);
627
628 if (!rtnl_trylock()) {
629 schedule_delayed_work(&team->notify_peers.dw, 0);
630 return;
631 }
b0d11b42
JP		 632 val = atomic_dec_if_positive(&team->notify_peers.count_pending);
633 if (val < 0) {
634 rtnl_unlock();
635 return;
636 }
fc423ff0
JP		 637 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev);
638 rtnl_unlock();
b0d11b42 639 if (val)
fc423ff0
JP		 640 schedule_delayed_work(&team->notify_peers.dw,
641 msecs_to_jiffies(team->notify_peers.interval));
642}
643
644static void team_notify_peers(struct team *team)
645{
646 if (!team->notify_peers.count || !netif_running(team->dev))
647 return;
47549650 648 atomic_add(team->notify_peers.count, &team->notify_peers.count_pending);
fc423ff0
JP		 649 schedule_delayed_work(&team->notify_peers.dw, 0);
650}
651
652static void team_notify_peers_init(struct team *team)
653{
654 INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
655}
656
657static void team_notify_peers_fini(struct team *team)
658{
659 cancel_delayed_work_sync(&team->notify_peers.dw);
660}
661
662
492b200e
JP		 663/*******************************
664 * Send multicast group rejoins
665 *******************************/
666
667static void team_mcast_rejoin_work(struct work_struct *work)
668{
669 struct team *team;
b0d11b42 670 int val;
492b200e
JP		 671
672 team = container_of(work, struct team, mcast_rejoin.dw.work);
673
674 if (!rtnl_trylock()) {
675 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
676 return;
677 }
b0d11b42
JP		 678 val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending);
679 if (val < 0) {
680 rtnl_unlock();
681 return;
682 }
492b200e
JP		 683 call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev);
684 rtnl_unlock();
b0d11b42 685 if (val)
492b200e
JP		 686 schedule_delayed_work(&team->mcast_rejoin.dw,
687 msecs_to_jiffies(team->mcast_rejoin.interval));
688}
689
690static void team_mcast_rejoin(struct team *team)
691{
692 if (!team->mcast_rejoin.count || !netif_running(team->dev))
693 return;
47549650 694 atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending);
492b200e
JP		 695 schedule_delayed_work(&team->mcast_rejoin.dw, 0);
696}
697
698static void team_mcast_rejoin_init(struct team *team)
699{
700 INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work);
701}
702
703static void team_mcast_rejoin_fini(struct team *team)
704{
705 cancel_delayed_work_sync(&team->mcast_rejoin.dw);
706}
707
708
3d249d4c
JP		 709/************************
710 * Rx path frame handler
711 ************************/
712
713/* note: already called with rcu_read_lock */
714static rx_handler_result_t team_handle_frame(struct sk_buff **pskb)
715{
716 struct sk_buff *skb = *pskb;
717 struct team_port *port;
718 struct team *team;
719 rx_handler_result_t res;
720
721 skb = skb_share_check(skb, GFP_ATOMIC);
722 if (!skb)
723 return RX_HANDLER_CONSUMED;
724
725 *pskb = skb;
726
727 port = team_port_get_rcu(skb->dev);
728 team = port->team;
19a0b58e
JP		 729 if (!team_port_enabled(port)) {
730 /* allow exact match delivery for disabled ports */
731 res = RX_HANDLER_EXACT;
732 } else {
733 res = team->ops.receive(team, port, skb);
734 }
3d249d4c
JP		 735 if (res == RX_HANDLER_ANOTHER) {
736 struct team_pcpu_stats *pcpu_stats;
737
738 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
739 u64_stats_update_begin(&pcpu_stats->syncp);
740 pcpu_stats->rx_packets++;
741 pcpu_stats->rx_bytes += skb->len;
742 if (skb->pkt_type == PACKET_MULTICAST)
743 pcpu_stats->rx_multicast++;
744 u64_stats_update_end(&pcpu_stats->syncp);
745
746 skb->dev = team->dev;
747 } else {
748 this_cpu_inc(team->pcpu_stats->rx_dropped);
749 }
750
751 return res;
752}
753
754
8ff5105a
JP		 755/*************************************
756 * Multiqueue Tx port select override
757 *************************************/
758
759static int team_queue_override_init(struct team *team)
760{
761 struct list_head *listarr;
762 unsigned int queue_cnt = team->dev->num_tx_queues - 1;
763 unsigned int i;
764
765 if (!queue_cnt)
766 return 0;
767 listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL);
768 if (!listarr)
769 return -ENOMEM;
770 team->qom_lists = listarr;
771 for (i = 0; i < queue_cnt; i++)
772 INIT_LIST_HEAD(listarr++);
773 return 0;
774}
775
776static void team_queue_override_fini(struct team *team)
777{
778 kfree(team->qom_lists);
779}
780
781static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id)
782{
783 return &team->qom_lists[queue_id - 1];
784}
785
786/*
787 * note: already called with rcu_read_lock
788 */
789static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb)
790{
791 struct list_head *qom_list;
792 struct team_port *port;
793
794 if (!team->queue_override_enabled || !skb->queue_mapping)
795 return false;
796 qom_list = __team_get_qom_list(team, skb->queue_mapping);
797 list_for_each_entry_rcu(port, qom_list, qom_list) {
798 if (!team_dev_queue_xmit(team, port, skb))
799 return true;
800 }
801 return false;
802}
803
804static void __team_queue_override_port_del(struct team *team,
805 struct team_port *port)
806{
6c31ff36
JP		 807 if (!port->queue_id)
808 return;
8ff5105a 809 list_del_rcu(&port->qom_list);
8ff5105a
JP		 810}
811
812static bool team_queue_override_port_has_gt_prio_than(struct team_port *port,
813 struct team_port *cur)
814{
815 if (port->priority < cur->priority)
816 return true;
817 if (port->priority > cur->priority)
818 return false;
819 if (port->index < cur->index)
820 return true;
821 return false;
822}
823
824static void __team_queue_override_port_add(struct team *team,
825 struct team_port *port)
826{
827 struct team_port *cur;
828 struct list_head *qom_list;
829 struct list_head *node;
830
6c31ff36 831 if (!port->queue_id)
8ff5105a 832 return;
8ff5105a
JP		 833 qom_list = __team_get_qom_list(team, port->queue_id);
834 node = qom_list;
835 list_for_each_entry(cur, qom_list, qom_list) {
836 if (team_queue_override_port_has_gt_prio_than(port, cur))
837 break;
838 node = &cur->qom_list;
839 }
840 list_add_tail_rcu(&port->qom_list, node);
841}
842
843static void __team_queue_override_enabled_check(struct team *team)
844{
845 struct team_port *port;
846 bool enabled = false;
847
848 list_for_each_entry(port, &team->port_list, list) {
6c31ff36 849 if (port->queue_id) {
8ff5105a
JP		 850 enabled = true;
851 break;
852 }
853 }
854 if (enabled == team->queue_override_enabled)
855 return;
856 netdev_dbg(team->dev, "%s queue override\n",
857 enabled ? "Enabling" : "Disabling");
858 team->queue_override_enabled = enabled;
859}
860
6c31ff36
JP		 861static void team_queue_override_port_prio_changed(struct team *team,
862 struct team_port *port)
8ff5105a 863{
6c31ff36
JP		 864 if (!port->queue_id || team_port_enabled(port))
865 return;
8ff5105a
JP		 866 __team_queue_override_port_del(team, port);
867 __team_queue_override_port_add(team, port);
868 __team_queue_override_enabled_check(team);
869}
870
6c31ff36
JP		 871static void team_queue_override_port_change_queue_id(struct team *team,
872 struct team_port *port,
873 u16 new_queue_id)
874{
875 if (team_port_enabled(port)) {
876 __team_queue_override_port_del(team, port);
877 port->queue_id = new_queue_id;
878 __team_queue_override_port_add(team, port);
879 __team_queue_override_enabled_check(team);
880 } else {
881 port->queue_id = new_queue_id;
882 }
883}
884
885static void team_queue_override_port_add(struct team *team,
886 struct team_port *port)
887{
888 __team_queue_override_port_add(team, port);
889 __team_queue_override_enabled_check(team);
890}
891
892static void team_queue_override_port_del(struct team *team,
893 struct team_port *port)
894{
895 __team_queue_override_port_del(team, port);
896 __team_queue_override_enabled_check(team);
897}
898
8ff5105a 899
3d249d4c
JP		 900/****************
901 * Port handling
902 ****************/
903
904static bool team_port_find(const struct team *team,
905 const struct team_port *port)
906{
907 struct team_port *cur;
908
909 list_for_each_entry(cur, &team->port_list, list)
910 if (cur == port)
911 return true;
912 return false;
913}
914
915/*
19a0b58e
JP		 916 * Enable/disable port by adding to enabled port hashlist and setting
917 * port->index (Might be racy so reader could see incorrect ifindex when
918 * processing a flying packet, but that is not a problem). Write guarded
919 * by team->lock.
3d249d4c 920 */
19a0b58e
JP		 921static void team_port_enable(struct team *team,
922 struct team_port *port)
3d249d4c 923{
19a0b58e
JP		 924 if (team_port_enabled(port))
925 return;
926 port->index = team->en_port_count++;
3d249d4c
JP		 927 hlist_add_head_rcu(&port->hlist,
928 team_port_index_hash(team, port->index));
122bb046 929 team_adjust_ops(team);
6c31ff36 930 team_queue_override_port_add(team, port);
4bccfd17
JP		 931 if (team->ops.port_enabled)
932 team->ops.port_enabled(team, port);
fc423ff0 933 team_notify_peers(team);
492b200e 934 team_mcast_rejoin(team);
3d249d4c
JP		 935}
936
937static void __reconstruct_port_hlist(struct team *team, int rm_index)
938{
939 int i;
940 struct team_port *port;
941
19a0b58e 942 for (i = rm_index + 1; i < team->en_port_count; i++) {
3d249d4c
JP		 943 port = team_get_port_by_index(team, i);
944 hlist_del_rcu(&port->hlist);
945 port->index--;
946 hlist_add_head_rcu(&port->hlist,
947 team_port_index_hash(team, port->index));
948 }
949}
950
19a0b58e
JP		 951static void team_port_disable(struct team *team,
952 struct team_port *port)
3d249d4c 953{
19a0b58e
JP		 954 if (!team_port_enabled(port))
955 return;
4bccfd17
JP		 956 if (team->ops.port_disabled)
957 team->ops.port_disabled(team, port);
3d249d4c 958 hlist_del_rcu(&port->hlist);
122bb046 959 __reconstruct_port_hlist(team, port->index);
19a0b58e 960 port->index = -1;
122bb046 961 team->en_port_count--;
735d381f
JP		 962 team_queue_override_port_del(team, port);
963 team_adjust_ops(team);
fc423ff0 964 team_notify_peers(team);
492b200e 965 team_mcast_rejoin(team);
3d249d4c
JP		 966}
967
968#define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
969 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
970 NETIF_F_HIGHDMA | NETIF_F_LRO)
971
972static void __team_compute_features(struct team *team)
973{
974 struct team_port *port;
3625920b 975 u32 vlan_features = TEAM_VLAN_FEATURES & NETIF_F_ALL_FOR_ALL;
3d249d4c 976 unsigned short max_hard_header_len = ETH_HLEN;
02875878
ED		 977 unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
978 IFF_XMIT_DST_RELEASE_PERM;
3d249d4c
JP		 979
980 list_for_each_entry(port, &team->port_list, list) {
981 vlan_features = netdev_increment_features(vlan_features,
982 port->dev->vlan_features,
983 TEAM_VLAN_FEATURES);
984
dc905951 985 dst_release_flag &= port->dev->priv_flags;
3d249d4c
JP		 986 if (port->dev->hard_header_len > max_hard_header_len)
987 max_hard_header_len = port->dev->hard_header_len;
988 }
989
990 team->dev->vlan_features = vlan_features;
991 team->dev->hard_header_len = max_hard_header_len;
992
02875878
ED		 993 team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
994 if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM))
995 team->dev->priv_flags |= IFF_XMIT_DST_RELEASE;
dc905951 996
3d249d4c
JP		 997 netdev_change_features(team->dev);
998}
999
1000static void team_compute_features(struct team *team)
1001{
61dc3461 1002 mutex_lock(&team->lock);
3d249d4c 1003 __team_compute_features(team);
61dc3461 1004 mutex_unlock(&team->lock);
3d249d4c
JP		 1005}
1006
1007static int team_port_enter(struct team *team, struct team_port *port)
1008{
1009 int err = 0;
1010
1011 dev_hold(team->dev);
3d249d4c
JP		 1012 if (team->ops.port_enter) {
1013 err = team->ops.port_enter(team, port);
1014 if (err) {
1015 netdev_err(team->dev, "Device %s failed to enter team mode\n",
1016 port->dev->name);
1017 goto err_port_enter;
1018 }
1019 }
1020
1021 return 0;
1022
1023err_port_enter:
3d249d4c
JP		 1024 dev_put(team->dev);
1025
1026 return err;
1027}
1028
1029static void team_port_leave(struct team *team, struct team_port *port)
1030{
1031 if (team->ops.port_leave)
1032 team->ops.port_leave(team, port);
3d249d4c
JP		 1033 dev_put(team->dev);
1034}
1035
bd2d0837 1036#ifdef CONFIG_NET_POLL_CONTROLLER
a8779ec1 1037static int team_port_enable_netpoll(struct team *team, struct team_port *port)
bd2d0837
JP		 1038{
1039 struct netpoll *np;
1040 int err;
1041
0fb52a27 1042 if (!team->dev->npinfo)
1043 return 0;
1044
a8779ec1 1045 np = kzalloc(sizeof(*np), GFP_KERNEL);
bd2d0837
JP		 1046 if (!np)
1047 return -ENOMEM;
1048
a8779ec1 1049 err = __netpoll_setup(np, port->dev);
bd2d0837
JP		 1050 if (err) {
1051 kfree(np);
1052 return err;
1053 }
1054 port->np = np;
1055 return err;
1056}
1057
1058static void team_port_disable_netpoll(struct team_port *port)
1059{
1060 struct netpoll *np = port->np;
1061
1062 if (!np)
1063 return;
1064 port->np = NULL;
1065
1066 /* Wait for transmitting packets to finish before freeing. */
1067 synchronize_rcu_bh();
1068 __netpoll_cleanup(np);
1069 kfree(np);
1070}
bd2d0837 1071#else
a8779ec1 1072static int team_port_enable_netpoll(struct team *team, struct team_port *port)
bd2d0837
JP		 1073{
1074 return 0;
1075}
1076static void team_port_disable_netpoll(struct team_port *port)
1077{
1078}
bd2d0837
JP		 1079#endif
1080
d7d3c051
JP		 1081static int team_upper_dev_link(struct net_device *dev,
1082 struct net_device *port_dev)
1083{
1084 int err;
1085
1086 err = netdev_master_upper_dev_link(port_dev, dev);
1087 if (err)
1088 return err;
1089 port_dev->priv_flags |= IFF_TEAM_PORT;
1090 return 0;
1091}
1092
1093static void team_upper_dev_unlink(struct net_device *dev,
1094 struct net_device *port_dev)
1095{
1096 netdev_upper_dev_unlink(port_dev, dev);
1097 port_dev->priv_flags &= ~IFF_TEAM_PORT;
1098}
1099
10f3f51d 1100static void __team_port_change_port_added(struct team_port *port, bool linkup);
1d76efe1
JP		 1101static int team_dev_type_check_change(struct net_device *dev,
1102 struct net_device *port_dev);
3d249d4c
JP		 1103
1104static int team_port_add(struct team *team, struct net_device *port_dev)
1105{
1106 struct net_device *dev = team->dev;
1107 struct team_port *port;
1108 char *portname = port_dev->name;
1109 int err;
1110
1d76efe1
JP		 1111 if (port_dev->flags & IFF_LOOPBACK) {
1112 netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n",
3d249d4c
JP		 1113 portname);
1114 return -EINVAL;
1115 }
1116
1117 if (team_port_exists(port_dev)) {
1118 netdev_err(dev, "Device %s is already a port "
1119 "of a team device\n", portname);
1120 return -EBUSY;
1121 }
1122
2c33bb37
JP		 1123 if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
1124 vlan_uses_dev(dev)) {
1125 netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
1126 portname);
1127 return -EPERM;
1128 }
1129
1d76efe1
JP		 1130 err = team_dev_type_check_change(dev, port_dev);
1131 if (err)
1132 return err;
1133
3d249d4c
JP		 1134 if (port_dev->flags & IFF_UP) {
1135 netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n",
1136 portname);
1137 return -EBUSY;
1138 }
1139
5149ee58
JP		 1140 port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size,
1141 GFP_KERNEL);
3d249d4c
JP		 1142 if (!port)
1143 return -ENOMEM;
1144
1145 port->dev = port_dev;
1146 port->team = team;
8ff5105a 1147 INIT_LIST_HEAD(&port->qom_list);
3d249d4c
JP		 1148
1149 port->orig.mtu = port_dev->mtu;
1150 err = dev_set_mtu(port_dev, dev->mtu);
1151 if (err) {
1152 netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err);
1153 goto err_set_mtu;
1154 }
1155
1d76efe1 1156 memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len);
3d249d4c
JP		 1157
1158 err = team_port_enter(team, port);
1159 if (err) {
1160 netdev_err(dev, "Device %s failed to enter team mode\n",
1161 portname);
1162 goto err_port_enter;
1163 }
1164
1165 err = dev_open(port_dev);
1166 if (err) {
1167 netdev_dbg(dev, "Device %s opening failed\n",
1168 portname);
1169 goto err_dev_open;
1170 }
1171
57459185
JP		 1172 err = vlan_vids_add_by_dev(port_dev, dev);
1173 if (err) {
1174 netdev_err(dev, "Failed to add vlan ids to device %s\n",
1175 portname);
1176 goto err_vids_add;
1177 }
1178
a8779ec1 1179 err = team_port_enable_netpoll(team, port);
0fb52a27 1180 if (err) {
1181 netdev_err(dev, "Failed to enable netpoll on device %s\n",
1182 portname);
1183 goto err_enable_netpoll;
bd2d0837
JP		 1184 }
1185
fbe168ba
MK		 1186 if (!(dev->features & NETIF_F_LRO))
1187 dev_disable_lro(port_dev);
1188
3d249d4c
JP		 1189 err = netdev_rx_handler_register(port_dev, team_handle_frame,
1190 port);
1191 if (err) {
1192 netdev_err(dev, "Device %s failed to register rx_handler\n",
1193 portname);
1194 goto err_handler_register;
1195 }
1196
d7d3c051
JP		 1197 err = team_upper_dev_link(dev, port_dev);
1198 if (err) {
1199 netdev_err(dev, "Device %s failed to set upper link\n",
1200 portname);
1201 goto err_set_upper_link;
1202 }
1203
35b384bd 1204 err = __team_option_inst_add_port(team, port);
80f7c668
JP		 1205 if (err) {
1206 netdev_err(dev, "Device %s failed to add per-port options\n",
1207 portname);
1208 goto err_option_port_add;
1209 }
1210
19a0b58e 1211 port->index = -1;
19a0b58e 1212 list_add_tail_rcu(&port->list, &team->port_list);
72df935d 1213 team_port_enable(team, port);
3d249d4c 1214 __team_compute_features(team);
10f3f51d 1215 __team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
35b384bd 1216 __team_options_change_check(team);
3d249d4c
JP		 1217
1218 netdev_info(dev, "Port device %s added\n", portname);
1219
1220 return 0;
1221
80f7c668 1222err_option_port_add:
d7d3c051
JP		 1223 team_upper_dev_unlink(dev, port_dev);
1224
1225err_set_upper_link:
80f7c668
JP		 1226 netdev_rx_handler_unregister(port_dev);
1227
3d249d4c 1228err_handler_register:
bd2d0837
JP		 1229 team_port_disable_netpoll(port);
1230
1231err_enable_netpoll:
57459185
JP		 1232 vlan_vids_del_by_dev(port_dev, dev);
1233
1234err_vids_add:
3d249d4c
JP		 1235 dev_close(port_dev);
1236
1237err_dev_open:
1238 team_port_leave(team, port);
1d76efe1 1239 team_port_set_orig_dev_addr(port);
3d249d4c
JP		 1240
1241err_port_enter:
1242 dev_set_mtu(port_dev, port->orig.mtu);
1243
1244err_set_mtu:
1245 kfree(port);
1246
1247 return err;
1248}
1249
10f3f51d
JP		 1250static void __team_port_change_port_removed(struct team_port *port);
1251
3d249d4c
JP		 1252static int team_port_del(struct team *team, struct net_device *port_dev)
1253{
1254 struct net_device *dev = team->dev;
1255 struct team_port *port;
1256 char *portname = port_dev->name;
1257
1258 port = team_port_get_rtnl(port_dev);
1259 if (!port || !team_port_find(team, port)) {
1260 netdev_err(dev, "Device %s does not act as a port of this team\n",
1261 portname);
1262 return -ENOENT;
1263 }
1264
19a0b58e
JP		 1265 team_port_disable(team, port);
1266 list_del_rcu(&port->list);
d7d3c051 1267 team_upper_dev_unlink(dev, port_dev);
3d249d4c 1268 netdev_rx_handler_unregister(port_dev);
bd2d0837 1269 team_port_disable_netpoll(port);
57459185 1270 vlan_vids_del_by_dev(port_dev, dev);
ba81276b
VY		 1271 dev_uc_unsync(port_dev, dev);
1272 dev_mc_unsync(port_dev, dev);
3d249d4c
JP		 1273 dev_close(port_dev);
1274 team_port_leave(team, port);
c3969d80
JP		 1275
1276 __team_option_inst_mark_removed_port(team, port);
1277 __team_options_change_check(team);
1278 __team_option_inst_del_port(team, port);
1279 __team_port_change_port_removed(port);
1280
1d76efe1 1281 team_port_set_orig_dev_addr(port);
3d249d4c 1282 dev_set_mtu(port_dev, port->orig.mtu);
d80b35be 1283 kfree_rcu(port, rcu);
3d249d4c
JP		 1284 netdev_info(dev, "Port device %s removed\n", portname);
1285 __team_compute_features(team);
1286
1287 return 0;
1288}
1289
1290
1291/*****************
1292 * Net device ops
1293 *****************/
1294
80f7c668 1295static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx)
3d249d4c 1296{
d299cd51 1297 ctx->data.str_val = team->mode->kind;
3d249d4c
JP		 1298 return 0;
1299}
1300
80f7c668 1301static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
3d249d4c 1302{
80f7c668 1303 return team_change_mode(team, ctx->data.str_val);
3d249d4c
JP		 1304}
1305
fc423ff0
JP		 1306static int team_notify_peers_count_get(struct team *team,
1307 struct team_gsetter_ctx *ctx)
1308{
1309 ctx->data.u32_val = team->notify_peers.count;
1310 return 0;
1311}
1312
1313static int team_notify_peers_count_set(struct team *team,
1314 struct team_gsetter_ctx *ctx)
1315{
1316 team->notify_peers.count = ctx->data.u32_val;
1317 return 0;
1318}
1319
1320static int team_notify_peers_interval_get(struct team *team,
1321 struct team_gsetter_ctx *ctx)
1322{
1323 ctx->data.u32_val = team->notify_peers.interval;
1324 return 0;
1325}
1326
1327static int team_notify_peers_interval_set(struct team *team,
1328 struct team_gsetter_ctx *ctx)
1329{
1330 team->notify_peers.interval = ctx->data.u32_val;
1331 return 0;
1332}
1333
492b200e
JP		 1334static int team_mcast_rejoin_count_get(struct team *team,
1335 struct team_gsetter_ctx *ctx)
1336{
1337 ctx->data.u32_val = team->mcast_rejoin.count;
1338 return 0;
1339}
1340
1341static int team_mcast_rejoin_count_set(struct team *team,
1342 struct team_gsetter_ctx *ctx)
1343{
1344 team->mcast_rejoin.count = ctx->data.u32_val;
1345 return 0;
1346}
1347
1348static int team_mcast_rejoin_interval_get(struct team *team,
1349 struct team_gsetter_ctx *ctx)
1350{
1351 ctx->data.u32_val = team->mcast_rejoin.interval;
1352 return 0;
1353}
1354
1355static int team_mcast_rejoin_interval_set(struct team *team,
1356 struct team_gsetter_ctx *ctx)
1357{
1358 team->mcast_rejoin.interval = ctx->data.u32_val;
1359 return 0;
1360}
1361
acd69962
JP		 1362static int team_port_en_option_get(struct team *team,
1363 struct team_gsetter_ctx *ctx)
1364{
85d59a87
JP		 1365 struct team_port *port = ctx->info->port;
1366
1367 ctx->data.bool_val = team_port_enabled(port);
acd69962
JP		 1368 return 0;
1369}
1370
1371static int team_port_en_option_set(struct team *team,
1372 struct team_gsetter_ctx *ctx)
1373{
85d59a87
JP		 1374 struct team_port *port = ctx->info->port;
1375
acd69962 1376 if (ctx->data.bool_val)
85d59a87 1377 team_port_enable(team, port);
acd69962 1378 else
85d59a87 1379 team_port_disable(team, port);
acd69962
JP		 1380 return 0;
1381}
1382
71472ec1
JP		 1383static int team_user_linkup_option_get(struct team *team,
1384 struct team_gsetter_ctx *ctx)
1385{
85d59a87
JP		 1386 struct team_port *port = ctx->info->port;
1387
1388 ctx->data.bool_val = port->user.linkup;
71472ec1
JP		 1389 return 0;
1390}
1391
f5e0d343
JP		 1392static void __team_carrier_check(struct team *team);
1393
71472ec1
JP		 1394static int team_user_linkup_option_set(struct team *team,
1395 struct team_gsetter_ctx *ctx)
1396{
85d59a87
JP		 1397 struct team_port *port = ctx->info->port;
1398
1399 port->user.linkup = ctx->data.bool_val;
1400 team_refresh_port_linkup(port);
f5e0d343 1401 __team_carrier_check(port->team);
71472ec1
JP		 1402 return 0;
1403}
1404
1405static int team_user_linkup_en_option_get(struct team *team,
1406 struct team_gsetter_ctx *ctx)
1407{
85d59a87 1408 struct team_port *port = ctx->info->port;
71472ec1
JP		 1409
1410 ctx->data.bool_val = port->user.linkup_enabled;
1411 return 0;
1412}
1413
1414static int team_user_linkup_en_option_set(struct team *team,
1415 struct team_gsetter_ctx *ctx)
1416{
85d59a87 1417 struct team_port *port = ctx->info->port;
71472ec1
JP		 1418
1419 port->user.linkup_enabled = ctx->data.bool_val;
85d59a87 1420 team_refresh_port_linkup(port);
f5e0d343 1421 __team_carrier_check(port->team);
71472ec1
JP		 1422 return 0;
1423}
1424
a86fc6b7
JP		 1425static int team_priority_option_get(struct team *team,
1426 struct team_gsetter_ctx *ctx)
1427{
1428 struct team_port *port = ctx->info->port;
1429
1430 ctx->data.s32_val = port->priority;
1431 return 0;
1432}
1433
1434static int team_priority_option_set(struct team *team,
1435 struct team_gsetter_ctx *ctx)
1436{
1437 struct team_port *port = ctx->info->port;
6c31ff36 1438 s32 priority = ctx->data.s32_val;
a86fc6b7 1439
6c31ff36
JP		 1440 if (port->priority == priority)
1441 return 0;
1442 port->priority = priority;
1443 team_queue_override_port_prio_changed(team, port);
8ff5105a
JP		 1444 return 0;
1445}
1446
1447static int team_queue_id_option_get(struct team *team,
1448 struct team_gsetter_ctx *ctx)
1449{
1450 struct team_port *port = ctx->info->port;
1451
1452 ctx->data.u32_val = port->queue_id;
a86fc6b7
JP		 1453 return 0;
1454}
1455
8ff5105a
JP		 1456static int team_queue_id_option_set(struct team *team,
1457 struct team_gsetter_ctx *ctx)
1458{
1459 struct team_port *port = ctx->info->port;
6c31ff36 1460 u16 new_queue_id = ctx->data.u32_val;
8ff5105a 1461
6c31ff36 1462 if (port->queue_id == new_queue_id)
8ff5105a 1463 return 0;
6c31ff36 1464 if (new_queue_id >= team->dev->real_num_tx_queues)
8ff5105a 1465 return -EINVAL;
6c31ff36 1466 team_queue_override_port_change_queue_id(team, port, new_queue_id);
8ff5105a
JP		 1467 return 0;
1468}
1469
358b8382 1470static const struct team_option team_options[] = {
3d249d4c
JP		 1471 {
1472 .name = "mode",
1473 .type = TEAM_OPTION_TYPE_STRING,
1474 .getter = team_mode_option_get,
1475 .setter = team_mode_option_set,
1476 },
fc423ff0
JP		 1477 {
1478 .name = "notify_peers_count",
1479 .type = TEAM_OPTION_TYPE_U32,
1480 .getter = team_notify_peers_count_get,
1481 .setter = team_notify_peers_count_set,
1482 },
1483 {
1484 .name = "notify_peers_interval",
1485 .type = TEAM_OPTION_TYPE_U32,
1486 .getter = team_notify_peers_interval_get,
1487 .setter = team_notify_peers_interval_set,
1488 },
492b200e
JP		 1489 {
1490 .name = "mcast_rejoin_count",
1491 .type = TEAM_OPTION_TYPE_U32,
1492 .getter = team_mcast_rejoin_count_get,
1493 .setter = team_mcast_rejoin_count_set,
1494 },
1495 {
1496 .name = "mcast_rejoin_interval",
1497 .type = TEAM_OPTION_TYPE_U32,
1498 .getter = team_mcast_rejoin_interval_get,
1499 .setter = team_mcast_rejoin_interval_set,
1500 },
acd69962
JP		 1501 {
1502 .name = "enabled",
1503 .type = TEAM_OPTION_TYPE_BOOL,
1504 .per_port = true,
1505 .getter = team_port_en_option_get,
1506 .setter = team_port_en_option_set,
1507 },
71472ec1
JP		 1508 {
1509 .name = "user_linkup",
1510 .type = TEAM_OPTION_TYPE_BOOL,
1511 .per_port = true,
1512 .getter = team_user_linkup_option_get,
1513 .setter = team_user_linkup_option_set,
1514 },
1515 {
1516 .name = "user_linkup_enabled",
1517 .type = TEAM_OPTION_TYPE_BOOL,
1518 .per_port = true,
1519 .getter = team_user_linkup_en_option_get,
1520 .setter = team_user_linkup_en_option_set,
1521 },
a86fc6b7
JP		 1522 {
1523 .name = "priority",
1524 .type = TEAM_OPTION_TYPE_S32,
1525 .per_port = true,
1526 .getter = team_priority_option_get,
1527 .setter = team_priority_option_set,
1528 },
8ff5105a
JP		 1529 {
1530 .name = "queue_id",
1531 .type = TEAM_OPTION_TYPE_U32,
1532 .per_port = true,
1533 .getter = team_queue_id_option_get,
1534 .setter = team_queue_id_option_set,
1535 },
3d249d4c
JP		 1536};
1537
6c85f2bd
JP		 1538static struct lock_class_key team_netdev_xmit_lock_key;
1539static struct lock_class_key team_netdev_addr_lock_key;
b3c581d5 1540static struct lock_class_key team_tx_busylock_key;
6c85f2bd
JP		 1541
1542static void team_set_lockdep_class_one(struct net_device *dev,
1543 struct netdev_queue *txq,
1544 void *unused)
1545{
1546 lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key);
1547}
1548
1549static void team_set_lockdep_class(struct net_device *dev)
1550{
1551 lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key);
1552 netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL);
b3c581d5 1553 dev->qdisc_tx_busylock = &team_tx_busylock_key;
6c85f2bd
JP		 1554}
1555
3d249d4c
JP		 1556static int team_init(struct net_device *dev)
1557{
1558 struct team *team = netdev_priv(dev);
1559 int i;
358b8382 1560 int err;
3d249d4c
JP		 1561
1562 team->dev = dev;
61dc3461 1563 mutex_init(&team->lock);
d299cd51 1564 team_set_no_mode(team);
3d249d4c 1565
1c213bd2 1566 team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
3d249d4c
JP		 1567 if (!team->pcpu_stats)
1568 return -ENOMEM;
1569
1570 for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
19a0b58e 1571 INIT_HLIST_HEAD(&team->en_port_hlist[i]);
3d249d4c 1572 INIT_LIST_HEAD(&team->port_list);
8ff5105a
JP		 1573 err = team_queue_override_init(team);
1574 if (err)
1575 goto err_team_queue_override_init;
3d249d4c
JP		 1576
1577 team_adjust_ops(team);
1578
1579 INIT_LIST_HEAD(&team->option_list);
80f7c668 1580 INIT_LIST_HEAD(&team->option_inst_list);
fc423ff0
JP		 1581
1582 team_notify_peers_init(team);
492b200e 1583 team_mcast_rejoin_init(team);
fc423ff0 1584
358b8382
JP		 1585 err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
1586 if (err)
1587 goto err_options_register;
3d249d4c
JP		 1588 netif_carrier_off(dev);
1589
6c85f2bd
JP		 1590 team_set_lockdep_class(dev);
1591
3d249d4c 1592 return 0;
358b8382
JP		 1593
1594err_options_register:
492b200e 1595 team_mcast_rejoin_fini(team);
fc423ff0 1596 team_notify_peers_fini(team);
8ff5105a
JP		 1597 team_queue_override_fini(team);
1598err_team_queue_override_init:
358b8382
JP		 1599 free_percpu(team->pcpu_stats);
1600
1601 return err;
3d249d4c
JP		 1602}
1603
1604static void team_uninit(struct net_device *dev)
1605{
1606 struct team *team = netdev_priv(dev);
1607 struct team_port *port;
1608 struct team_port *tmp;
1609
61dc3461 1610 mutex_lock(&team->lock);
3d249d4c
JP		 1611 list_for_each_entry_safe(port, tmp, &team->port_list, list)
1612 team_port_del(team, port->dev);
1613
1614 __team_change_mode(team, NULL); /* cleanup */
1615 __team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
492b200e 1616 team_mcast_rejoin_fini(team);
fc423ff0 1617 team_notify_peers_fini(team);
8ff5105a 1618 team_queue_override_fini(team);
61dc3461 1619 mutex_unlock(&team->lock);
3d249d4c
JP		 1620}
1621
1622static void team_destructor(struct net_device *dev)
1623{
1624 struct team *team = netdev_priv(dev);
1625
1626 free_percpu(team->pcpu_stats);
1627 free_netdev(dev);
1628}
1629
1630static int team_open(struct net_device *dev)
1631{
3d249d4c
JP		 1632 return 0;
1633}
1634
1635static int team_close(struct net_device *dev)
1636{
3d249d4c
JP		 1637 return 0;
1638}
1639
1640/*
1641 * note: already called with rcu_read_lock
1642 */
1643static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev)
1644{
1645 struct team *team = netdev_priv(dev);
8ff5105a 1646 bool tx_success;
3d249d4c
JP		 1647 unsigned int len = skb->len;
1648
8ff5105a
JP		 1649 tx_success = team_queue_override_transmit(team, skb);
1650 if (!tx_success)
1651 tx_success = team->ops.transmit(team, skb);
3d249d4c
JP		 1652 if (tx_success) {
1653 struct team_pcpu_stats *pcpu_stats;
1654
1655 pcpu_stats = this_cpu_ptr(team->pcpu_stats);
1656 u64_stats_update_begin(&pcpu_stats->syncp);
1657 pcpu_stats->tx_packets++;
1658 pcpu_stats->tx_bytes += len;
1659 u64_stats_update_end(&pcpu_stats->syncp);
1660 } else {
1661 this_cpu_inc(team->pcpu_stats->tx_dropped);
1662 }
1663
1664 return NETDEV_TX_OK;
1665}
1666
f663dd9a 1667static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb,
99932d4f 1668 void *accel_priv, select_queue_fallback_t fallback)
6c85f2bd
JP		 1669{
1670 /*
1671 * This helper function exists to help dev_pick_tx get the correct
1672 * destination queue. Using a helper function skips a call to
1673 * skb_tx_hash and will put the skbs in the queue we expect on their
1674 * way down to the team driver.
1675 */
1676 u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
1677
1678 /*
1679 * Save the original txq to restore before passing to the driver
1680 */
1681 qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
1682
1683 if (unlikely(txq >= dev->real_num_tx_queues)) {
1684 do {
1685 txq -= dev->real_num_tx_queues;
1686 } while (txq >= dev->real_num_tx_queues);
1687 }
1688 return txq;
1689}
1690
3d249d4c
JP		 1691static void team_change_rx_flags(struct net_device *dev, int change)
1692{
1693 struct team *team = netdev_priv(dev);
1694 struct team_port *port;
1695 int inc;
1696
1697 rcu_read_lock();
1698 list_for_each_entry_rcu(port, &team->port_list, list) {
1699 if (change & IFF_PROMISC) {
1700 inc = dev->flags & IFF_PROMISC ? 1 : -1;
1701 dev_set_promiscuity(port->dev, inc);
1702 }
1703 if (change & IFF_ALLMULTI) {
1704 inc = dev->flags & IFF_ALLMULTI ? 1 : -1;
1705 dev_set_allmulti(port->dev, inc);
1706 }
1707 }
1708 rcu_read_unlock();
1709}
1710
1711static void team_set_rx_mode(struct net_device *dev)
1712{
1713 struct team *team = netdev_priv(dev);
1714 struct team_port *port;
1715
1716 rcu_read_lock();
1717 list_for_each_entry_rcu(port, &team->port_list, list) {
72b27032
VY		 1718 dev_uc_sync_multiple(port->dev, dev);
1719 dev_mc_sync_multiple(port->dev, dev);
3d249d4c
JP		 1720 }
1721 rcu_read_unlock();
1722}
1723
1724static int team_set_mac_address(struct net_device *dev, void *p)
1725{
1d76efe1 1726 struct sockaddr *addr = p;
3d249d4c
JP		 1727 struct team *team = netdev_priv(dev);
1728 struct team_port *port;
3d249d4c 1729
1d76efe1
JP		 1730 if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data))
1731 return -EADDRNOTAVAIL;
1732 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
9215f437
JP		 1733 mutex_lock(&team->lock);
1734 list_for_each_entry(port, &team->port_list, list)
1d76efe1
JP		 1735 if (team->ops.port_change_dev_addr)
1736 team->ops.port_change_dev_addr(team, port);
9215f437 1737 mutex_unlock(&team->lock);
3d249d4c
JP		 1738 return 0;
1739}
1740
1741static int team_change_mtu(struct net_device *dev, int new_mtu)
1742{
1743 struct team *team = netdev_priv(dev);
1744 struct team_port *port;
1745 int err;
1746
1747 /*
1748 * Alhough this is reader, it's guarded by team lock. It's not possible
1749 * to traverse list in reverse under rcu_read_lock
1750 */
61dc3461 1751 mutex_lock(&team->lock);
9d0d68fa 1752 team->port_mtu_change_allowed = true;
3d249d4c
JP		 1753 list_for_each_entry(port, &team->port_list, list) {
1754 err = dev_set_mtu(port->dev, new_mtu);
1755 if (err) {
1756 netdev_err(dev, "Device %s failed to change mtu",
1757 port->dev->name);
1758 goto unwind;
1759 }
1760 }
9d0d68fa 1761 team->port_mtu_change_allowed = false;
61dc3461 1762 mutex_unlock(&team->lock);
3d249d4c
JP		 1763
1764 dev->mtu = new_mtu;
1765
1766 return 0;
1767
1768unwind:
1769 list_for_each_entry_continue_reverse(port, &team->port_list, list)
1770 dev_set_mtu(port->dev, dev->mtu);
9d0d68fa 1771 team->port_mtu_change_allowed = false;
61dc3461 1772 mutex_unlock(&team->lock);
3d249d4c
JP		 1773
1774 return err;
1775}
1776
1777static struct rtnl_link_stats64 *
1778team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1779{
1780 struct team *team = netdev_priv(dev);
1781 struct team_pcpu_stats *p;
1782 u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes;
1783 u32 rx_dropped = 0, tx_dropped = 0;
1784 unsigned int start;
1785 int i;
1786
1787 for_each_possible_cpu(i) {
1788 p = per_cpu_ptr(team->pcpu_stats, i);
1789 do {
57a7744e 1790 start = u64_stats_fetch_begin_irq(&p->syncp);
3d249d4c
JP		 1791 rx_packets = p->rx_packets;
1792 rx_bytes = p->rx_bytes;
1793 rx_multicast = p->rx_multicast;
1794 tx_packets = p->tx_packets;
1795 tx_bytes = p->tx_bytes;
57a7744e 1796 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
3d249d4c
JP		 1797
1798 stats->rx_packets += rx_packets;
1799 stats->rx_bytes += rx_bytes;
1800 stats->multicast += rx_multicast;
1801 stats->tx_packets += tx_packets;
1802 stats->tx_bytes += tx_bytes;
1803 /*
1804 * rx_dropped & tx_dropped are u32, updated
1805 * without syncp protection.
1806 */
1807 rx_dropped += p->rx_dropped;
1808 tx_dropped += p->tx_dropped;
1809 }
1810 stats->rx_dropped = rx_dropped;
1811 stats->tx_dropped = tx_dropped;
1812 return stats;
1813}
1814
80d5c368 1815static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3d249d4c
JP		 1816{
1817 struct team *team = netdev_priv(dev);
1818 struct team_port *port;
87002b03 1819 int err;
3d249d4c 1820
87002b03
JP		 1821 /*
1822 * Alhough this is reader, it's guarded by team lock. It's not possible
1823 * to traverse list in reverse under rcu_read_lock
1824 */
1825 mutex_lock(&team->lock);
1826 list_for_each_entry(port, &team->port_list, list) {
80d5c368 1827 err = vlan_vid_add(port->dev, proto, vid);
87002b03
JP		 1828 if (err)
1829 goto unwind;
3d249d4c 1830 }
87002b03 1831 mutex_unlock(&team->lock);
8e586137
JP		 1832
1833 return 0;
87002b03
JP		 1834
1835unwind:
1836 list_for_each_entry_continue_reverse(port, &team->port_list, list)
80d5c368 1837 vlan_vid_del(port->dev, proto, vid);
87002b03
JP		 1838 mutex_unlock(&team->lock);
1839
1840 return err;
3d249d4c
JP		 1841}
1842
80d5c368 1843static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3d249d4c
JP		 1844{
1845 struct team *team = netdev_priv(dev);
1846 struct team_port *port;
1847
1848 rcu_read_lock();
87002b03 1849 list_for_each_entry_rcu(port, &team->port_list, list)
80d5c368 1850 vlan_vid_del(port->dev, proto, vid);
3d249d4c 1851 rcu_read_unlock();
8e586137
JP		 1852
1853 return 0;
3d249d4c
JP		 1854}
1855
bd2d0837
JP		 1856#ifdef CONFIG_NET_POLL_CONTROLLER
1857static void team_poll_controller(struct net_device *dev)
1858{
1859}
1860
1861static void __team_netpoll_cleanup(struct team *team)
1862{
1863 struct team_port *port;
1864
1865 list_for_each_entry(port, &team->port_list, list)
1866 team_port_disable_netpoll(port);
1867}
1868
1869static void team_netpoll_cleanup(struct net_device *dev)
1870{
1871 struct team *team = netdev_priv(dev);
1872
1873 mutex_lock(&team->lock);
1874 __team_netpoll_cleanup(team);
1875 mutex_unlock(&team->lock);
1876}
1877
1878static int team_netpoll_setup(struct net_device *dev,
a8779ec1 1879 struct netpoll_info *npifo)
bd2d0837
JP		 1880{
1881 struct team *team = netdev_priv(dev);
1882 struct team_port *port;
3324d024 1883 int err = 0;
bd2d0837
JP		 1884
1885 mutex_lock(&team->lock);
1886 list_for_each_entry(port, &team->port_list, list) {
a8779ec1 1887 err = team_port_enable_netpoll(team, port);
bd2d0837
JP		 1888 if (err) {
1889 __team_netpoll_cleanup(team);
1890 break;
1891 }
1892 }
1893 mutex_unlock(&team->lock);
1894 return err;
1895}
1896#endif
1897
3d249d4c
JP		 1898static int team_add_slave(struct net_device *dev, struct net_device *port_dev)
1899{
1900 struct team *team = netdev_priv(dev);
1901 int err;
1902
61dc3461 1903 mutex_lock(&team->lock);
3d249d4c 1904 err = team_port_add(team, port_dev);
61dc3461 1905 mutex_unlock(&team->lock);
3d249d4c
JP		 1906 return err;
1907}
1908
1909static int team_del_slave(struct net_device *dev, struct net_device *port_dev)
1910{
1911 struct team *team = netdev_priv(dev);
1912 int err;
1913
61dc3461 1914 mutex_lock(&team->lock);
3d249d4c 1915 err = team_port_del(team, port_dev);
61dc3461 1916 mutex_unlock(&team->lock);
3d249d4c
JP		 1917 return err;
1918}
1919
234a8fd4
JP		 1920static netdev_features_t team_fix_features(struct net_device *dev,
1921 netdev_features_t features)
1922{
1923 struct team_port *port;
1924 struct team *team = netdev_priv(dev);
1925 netdev_features_t mask;
1926
a16a8ee7 1927 mask = features | NETIF_F_HW_SWITCH_OFFLOAD;
234a8fd4
JP		 1928 features &= ~NETIF_F_ONE_FOR_ALL;
1929 features |= NETIF_F_ALL_FOR_ALL;
1930
1931 rcu_read_lock();
1932 list_for_each_entry_rcu(port, &team->port_list, list) {
1933 features = netdev_increment_features(features,
1934 port->dev->features,
1935 mask);
1936 }
1937 rcu_read_unlock();
247f6d0f
JP		 1938
1939 features = netdev_add_tso_features(features, mask);
1940
234a8fd4
JP		 1941 return features;
1942}
1943
4cafe373
FL		 1944static int team_change_carrier(struct net_device *dev, bool new_carrier)
1945{
e185483e
FL		 1946 struct team *team = netdev_priv(dev);
1947
1948 team->user_carrier_enabled = true;
1949
4cafe373
FL		 1950 if (new_carrier)
1951 netif_carrier_on(dev);
1952 else
1953 netif_carrier_off(dev);
1954 return 0;
1955}
1956
3d249d4c
JP		 1957static const struct net_device_ops team_netdev_ops = {
1958 .ndo_init = team_init,
1959 .ndo_uninit = team_uninit,
1960 .ndo_open = team_open,
1961 .ndo_stop = team_close,
1962 .ndo_start_xmit = team_xmit,
6c85f2bd 1963 .ndo_select_queue = team_select_queue,
3d249d4c
JP		 1964 .ndo_change_rx_flags = team_change_rx_flags,
1965 .ndo_set_rx_mode = team_set_rx_mode,
1966 .ndo_set_mac_address = team_set_mac_address,
1967 .ndo_change_mtu = team_change_mtu,
1968 .ndo_get_stats64 = team_get_stats64,
1969 .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid,
1970 .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid,
bd2d0837
JP		 1971#ifdef CONFIG_NET_POLL_CONTROLLER
1972 .ndo_poll_controller = team_poll_controller,
1973 .ndo_netpoll_setup = team_netpoll_setup,
1974 .ndo_netpoll_cleanup = team_netpoll_cleanup,
1975#endif
3d249d4c
JP		 1976 .ndo_add_slave = team_add_slave,
1977 .ndo_del_slave = team_del_slave,
234a8fd4 1978 .ndo_fix_features = team_fix_features,
4cafe373 1979 .ndo_change_carrier = team_change_carrier,
fc8f40d8 1980 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
54ba5a0b 1981 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
b9f4cf75 1982 .ndo_features_check = passthru_features_check,
3d249d4c
JP		 1983};
1984
7f51c587
FL		 1985/***********************
1986 * ethtool interface
1987 ***********************/
1988
1989static void team_ethtool_get_drvinfo(struct net_device *dev,
1990 struct ethtool_drvinfo *drvinfo)
1991{
3066af58
FL		 1992 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
1993 strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
7f51c587
FL		 1994}
1995
1996static const struct ethtool_ops team_ethtool_ops = {
1997 .get_drvinfo = team_ethtool_get_drvinfo,
1998 .get_link = ethtool_op_get_link,
1999};
3d249d4c
JP		 2000
2001/***********************
2002 * rt netlink interface
2003 ***********************/
2004
1d76efe1
JP		 2005static void team_setup_by_port(struct net_device *dev,
2006 struct net_device *port_dev)
2007{
2008 dev->header_ops = port_dev->header_ops;
2009 dev->type = port_dev->type;
2010 dev->hard_header_len = port_dev->hard_header_len;
2011 dev->addr_len = port_dev->addr_len;
2012 dev->mtu = port_dev->mtu;
2013 memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len);
93af7357 2014 eth_hw_addr_inherit(dev, port_dev);
1d76efe1
JP		 2015}
2016
2017static int team_dev_type_check_change(struct net_device *dev,
2018 struct net_device *port_dev)
2019{
2020 struct team *team = netdev_priv(dev);
2021 char *portname = port_dev->name;
2022 int err;
2023
2024 if (dev->type == port_dev->type)
2025 return 0;
2026 if (!list_empty(&team->port_list)) {
2027 netdev_err(dev, "Device %s is of different type\n", portname);
2028 return -EBUSY;
2029 }
2030 err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev);
2031 err = notifier_to_errno(err);
2032 if (err) {
2033 netdev_err(dev, "Refused to change device type\n");
2034 return err;
2035 }
2036 dev_uc_flush(dev);
2037 dev_mc_flush(dev);
2038 team_setup_by_port(dev, port_dev);
2039 call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev);
2040 return 0;
2041}
2042
3d249d4c
JP		 2043static void team_setup(struct net_device *dev)
2044{
2045 ether_setup(dev);
2046
2047 dev->netdev_ops = &team_netdev_ops;
7f51c587 2048 dev->ethtool_ops = &team_ethtool_ops;
3d249d4c
JP		 2049 dev->destructor = team_destructor;
2050 dev->tx_queue_len = 0;
2051 dev->flags |= IFF_MULTICAST;
2052 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
2053
2054 /*
2055 * Indicate we support unicast address filtering. That way core won't
2056 * bring us to promisc mode in case a unicast addr is added.
2057 * Let this up to underlay drivers.
2058 */
5a1d1c8c 2059 dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
3d249d4c
JP		 2060
2061 dev->features |= NETIF_F_LLTX;
2062 dev->features |= NETIF_F_GRO;
99301ba1
WC		 2063
2064 /* Don't allow team devices to change network namespaces. */
2065 dev->features |= NETIF_F_NETNS_LOCAL;
2066
3ed71471 2067 dev->hw_features = TEAM_VLAN_FEATURES |
f646968f
PM		 2068 NETIF_F_HW_VLAN_CTAG_TX |
2069 NETIF_F_HW_VLAN_CTAG_RX |
2070 NETIF_F_HW_VLAN_CTAG_FILTER;
3d249d4c 2071
3ed71471 2072 dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM);
3d249d4c
JP		 2073 dev->features |= dev->hw_features;
2074}
2075
2076static int team_newlink(struct net *src_net, struct net_device *dev,
2077 struct nlattr *tb[], struct nlattr *data[])
2078{
3d249d4c 2079 if (tb[IFLA_ADDRESS] == NULL)
7ce5d222 2080 eth_hw_addr_random(dev);
3d249d4c 2081
ff204cce 2082 return register_netdevice(dev);
3d249d4c
JP		 2083}
2084
2085static int team_validate(struct nlattr *tb[], struct nlattr *data[])
2086{
2087 if (tb[IFLA_ADDRESS]) {
2088 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
2089 return -EINVAL;
2090 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
2091 return -EADDRNOTAVAIL;
2092 }
2093 return 0;
2094}
2095
6c85f2bd
JP		 2096static unsigned int team_get_num_tx_queues(void)
2097{
2098 return TEAM_DEFAULT_NUM_TX_QUEUES;
2099}
2100
2101static unsigned int team_get_num_rx_queues(void)
2102{
2103 return TEAM_DEFAULT_NUM_RX_QUEUES;
2104}
2105
3d249d4c 2106static struct rtnl_link_ops team_link_ops __read_mostly = {
6c85f2bd
JP		 2107 .kind = DRV_NAME,
2108 .priv_size = sizeof(struct team),
2109 .setup = team_setup,
2110 .newlink = team_newlink,
2111 .validate = team_validate,
2112 .get_num_tx_queues = team_get_num_tx_queues,
2113 .get_num_rx_queues = team_get_num_rx_queues,
3d249d4c
JP		 2114};
2115
2116
2117/***********************************
2118 * Generic netlink custom interface
2119 ***********************************/
2120
2121static struct genl_family team_nl_family = {
2122 .id = GENL_ID_GENERATE,
2123 .name = TEAM_GENL_NAME,
2124 .version = TEAM_GENL_VERSION,
2125 .maxattr = TEAM_ATTR_MAX,
2126 .netnsok = true,
2127};
2128
2129static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = {
2130 [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, },
2131 [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 },
2132 [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED },
2133 [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED },
2134};
2135
2136static const struct nla_policy
2137team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
2138 [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, },
2139 [TEAM_ATTR_OPTION_NAME] = {
2140 .type = NLA_STRING,
2141 .len = TEAM_STRING_MAX_LEN,
2142 },
2143 [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
2144 [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
2615598f 2145 [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
3d249d4c
JP		 2146};
2147
2148static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
2149{
2150 struct sk_buff *msg;
2151 void *hdr;
2152 int err;
2153
58050fce 2154 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3d249d4c
JP		 2155 if (!msg)
2156 return -ENOMEM;
2157
15e47304 2158 hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq,
3d249d4c 2159 &team_nl_family, 0, TEAM_CMD_NOOP);
a326e6dd
WY		 2160 if (!hdr) {
2161 err = -EMSGSIZE;
3d249d4c
JP		 2162 goto err_msg_put;
2163 }
2164
2165 genlmsg_end(msg, hdr);
2166
15e47304 2167 return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid);
3d249d4c
JP		 2168
2169err_msg_put:
2170 nlmsg_free(msg);
2171
2172 return err;
2173}
2174
2175/*
2176 * Netlink cmd functions should be locked by following two functions.
8c0713a5 2177 * Since dev gets held here, that ensures dev won't disappear in between.
3d249d4c
JP		 2178 */
2179static struct team *team_nl_team_get(struct genl_info *info)
2180{
2181 struct net *net = genl_info_net(info);
2182 int ifindex;
2183 struct net_device *dev;
2184 struct team *team;
2185
2186 if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX])
2187 return NULL;
2188
2189 ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]);
8c0713a5 2190 dev = dev_get_by_index(net, ifindex);
3d249d4c 2191 if (!dev || dev->netdev_ops != &team_netdev_ops) {
8c0713a5
JP		 2192 if (dev)
2193 dev_put(dev);
3d249d4c
JP		 2194 return NULL;
2195 }
2196
2197 team = netdev_priv(dev);
61dc3461 2198 mutex_lock(&team->lock);
3d249d4c
JP		 2199 return team;
2200}
2201
2202static void team_nl_team_put(struct team *team)
2203{
61dc3461 2204 mutex_unlock(&team->lock);
8c0713a5 2205 dev_put(team->dev);
3d249d4c
JP		 2206}
2207
9b00cf2d 2208typedef int team_nl_send_func_t(struct sk_buff *skb,
15e47304 2209 struct team *team, u32 portid);
9b00cf2d 2210
15e47304 2211static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid)
9b00cf2d 2212{
15e47304 2213 return genlmsg_unicast(dev_net(team->dev), skb, portid);
9b00cf2d
JP		 2214}
2215
01048d9a
JP		 2216static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
2217 struct team_option_inst *opt_inst)
2218{
2219 struct nlattr *option_item;
2220 struct team_option *option = opt_inst->option;
9b00cf2d 2221 struct team_option_inst_info *opt_inst_info = &opt_inst->info;
01048d9a
JP		 2222 struct team_gsetter_ctx ctx;
2223 int err;
2224
9b00cf2d
JP		 2225 ctx.info = opt_inst_info;
2226 err = team_option_get(team, opt_inst, &ctx);
2227 if (err)
2228 return err;
2229
01048d9a
JP		 2230 option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
2231 if (!option_item)
9b00cf2d 2232 return -EMSGSIZE;
01048d9a 2233
9b00cf2d
JP		 2234 if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
2235 goto nest_cancel;
01048d9a
JP		 2236 if (opt_inst_info->port &&
2237 nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
2238 opt_inst_info->port->dev->ifindex))
9b00cf2d 2239 goto nest_cancel;
01048d9a
JP		 2240 if (opt_inst->option->array_size &&
2241 nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
2242 opt_inst_info->array_index))
9b00cf2d 2243 goto nest_cancel;
01048d9a
JP		 2244
2245 switch (option->type) {
2246 case TEAM_OPTION_TYPE_U32:
2247 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
9b00cf2d 2248 goto nest_cancel;
01048d9a 2249 if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
9b00cf2d 2250 goto nest_cancel;
01048d9a
JP		 2251 break;
2252 case TEAM_OPTION_TYPE_STRING:
2253 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
9b00cf2d 2254 goto nest_cancel;
01048d9a
JP		 2255 if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
2256 ctx.data.str_val))
9b00cf2d 2257 goto nest_cancel;
01048d9a
JP		 2258 break;
2259 case TEAM_OPTION_TYPE_BINARY:
2260 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
9b00cf2d 2261 goto nest_cancel;
01048d9a
JP		 2262 if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
2263 ctx.data.bin_val.ptr))
9b00cf2d 2264 goto nest_cancel;
01048d9a
JP		 2265 break;
2266 case TEAM_OPTION_TYPE_BOOL:
2267 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
9b00cf2d 2268 goto nest_cancel;
01048d9a
JP		 2269 if (ctx.data.bool_val &&
2270 nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
9b00cf2d 2271 goto nest_cancel;
01048d9a 2272 break;
69821638
JP		 2273 case TEAM_OPTION_TYPE_S32:
2274 if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32))
2275 goto nest_cancel;
2276 if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val))
2277 goto nest_cancel;
2278 break;
01048d9a
JP		 2279 default:
2280 BUG();
2281 }
9b00cf2d
JP		 2282 if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
2283 goto nest_cancel;
2284 if (opt_inst->changed) {
2285 if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
2286 goto nest_cancel;
2287 opt_inst->changed = false;
2288 }
01048d9a
JP		 2289 nla_nest_end(skb, option_item);
2290 return 0;
2291
9b00cf2d
JP		 2292nest_cancel:
2293 nla_nest_cancel(skb, option_item);
2294 return -EMSGSIZE;
2295}
2296
2297static int __send_and_alloc_skb(struct sk_buff **pskb,
15e47304 2298 struct team *team, u32 portid,
9b00cf2d
JP		 2299 team_nl_send_func_t *send_func)
2300{
2301 int err;
2302
2303 if (*pskb) {
15e47304 2304 err = send_func(*pskb, team, portid);
9b00cf2d
JP		 2305 if (err)
2306 return err;
2307 }
58050fce 2308 *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
9b00cf2d
JP		 2309 if (!*pskb)
2310 return -ENOMEM;
2311 return 0;
01048d9a
JP		 2312}
2313
15e47304 2314static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
9b00cf2d 2315 int flags, team_nl_send_func_t *send_func,
01048d9a 2316 struct list_head *sel_opt_inst_list)
3d249d4c
JP		 2317{
2318 struct nlattr *option_list;
9b00cf2d 2319 struct nlmsghdr *nlh;
3d249d4c 2320 void *hdr;
80f7c668
JP		 2321 struct team_option_inst *opt_inst;
2322 int err;
9b00cf2d
JP		 2323 struct sk_buff *skb = NULL;
2324 bool incomplete;
2325 int i;
3d249d4c 2326
9b00cf2d
JP		 2327 opt_inst = list_first_entry(sel_opt_inst_list,
2328 struct team_option_inst, tmp_list);
2329
2330start_again:
15e47304 2331 err = __send_and_alloc_skb(&skb, team, portid, send_func);
9b00cf2d
JP		 2332 if (err)
2333 return err;
2334
15e47304 2335 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
3d249d4c 2336 TEAM_CMD_OPTIONS_GET);
a326e6dd
WY		 2337 if (!hdr)
2338 return -EMSGSIZE;
3d249d4c 2339
86ebb02d
DM		 2340 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2341 goto nla_put_failure;
3d249d4c
JP		 2342 option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION);
2343 if (!option_list)
75db986a 2344 goto nla_put_failure;
3d249d4c 2345
9b00cf2d
JP		 2346 i = 0;
2347 incomplete = false;
2348 list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) {
01048d9a 2349 err = team_nl_fill_one_option_get(skb, team, opt_inst);
9b00cf2d
JP		 2350 if (err) {
2351 if (err == -EMSGSIZE) {
2352 if (!i)
2353 goto errout;
2354 incomplete = true;
2355 break;
2356 }
01048d9a 2357 goto errout;
9b00cf2d
JP		 2358 }
2359 i++;
3d249d4c
JP		 2360 }
2361
2362 nla_nest_end(skb, option_list);
9b00cf2d
JP		 2363 genlmsg_end(skb, hdr);
2364 if (incomplete)
2365 goto start_again;
2366
2367send_done:
15e47304 2368 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
9b00cf2d 2369 if (!nlh) {
15e47304 2370 err = __send_and_alloc_skb(&skb, team, portid, send_func);
9b00cf2d
JP		 2371 if (err)
2372 goto errout;
2373 goto send_done;
2374 }
2375
15e47304 2376 return send_func(skb, team, portid);
3d249d4c
JP		 2377
2378nla_put_failure:
80f7c668
JP		 2379 err = -EMSGSIZE;
2380errout:
3d249d4c 2381 genlmsg_cancel(skb, hdr);
9b00cf2d 2382 nlmsg_free(skb);
80f7c668 2383 return err;
3d249d4c
JP		 2384}
2385
3d249d4c
JP		 2386static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
2387{
2388 struct team *team;
9b00cf2d 2389 struct team_option_inst *opt_inst;
3d249d4c 2390 int err;
9b00cf2d 2391 LIST_HEAD(sel_opt_inst_list);
3d249d4c
JP		 2392
2393 team = team_nl_team_get(info);
2394 if (!team)
2395 return -EINVAL;
2396
9b00cf2d
JP		 2397 list_for_each_entry(opt_inst, &team->option_inst_list, list)
2398 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
15e47304 2399 err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq,
9b00cf2d
JP		 2400 NLM_F_ACK, team_nl_send_unicast,
2401 &sel_opt_inst_list);
3d249d4c
JP		 2402
2403 team_nl_team_put(team);
2404
2405 return err;
2406}
2407
2fcdb2c9
JP		 2408static int team_nl_send_event_options_get(struct team *team,
2409 struct list_head *sel_opt_inst_list);
2410
3d249d4c
JP		 2411static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
2412{
2413 struct team *team;
2414 int err = 0;
2415 int i;
2416 struct nlattr *nl_option;
2fcdb2c9 2417 LIST_HEAD(opt_inst_list);
3d249d4c
JP		 2418
2419 team = team_nl_team_get(info);
2420 if (!team)
2421 return -EINVAL;
2422
2423 err = -EINVAL;
2424 if (!info->attrs[TEAM_ATTR_LIST_OPTION]) {
2425 err = -EINVAL;
2426 goto team_put;
2427 }
2428
2429 nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) {
80f7c668 2430 struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1];
b1303326 2431 struct nlattr *attr;
14f066ba 2432 struct nlattr *attr_data;
3d249d4c 2433 enum team_option_type opt_type;
80f7c668 2434 int opt_port_ifindex = 0; /* != 0 for per-port options */
b1303326
JP		 2435 u32 opt_array_index = 0;
2436 bool opt_is_array = false;
80f7c668 2437 struct team_option_inst *opt_inst;
3d249d4c
JP		 2438 char *opt_name;
2439 bool opt_found = false;
2440
2441 if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) {
2442 err = -EINVAL;
2443 goto team_put;
2444 }
80f7c668 2445 err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX,
3d249d4c
JP		 2446 nl_option, team_nl_option_policy);
2447 if (err)
2448 goto team_put;
80f7c668 2449 if (!opt_attrs[TEAM_ATTR_OPTION_NAME] ||
14f066ba 2450 !opt_attrs[TEAM_ATTR_OPTION_TYPE]) {
3d249d4c
JP		 2451 err = -EINVAL;
2452 goto team_put;
2453 }
80f7c668 2454 switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) {
3d249d4c
JP		 2455 case NLA_U32:
2456 opt_type = TEAM_OPTION_TYPE_U32;
2457 break;
2458 case NLA_STRING:
2459 opt_type = TEAM_OPTION_TYPE_STRING;
2460 break;
2615598f
JP		 2461 case NLA_BINARY:
2462 opt_type = TEAM_OPTION_TYPE_BINARY;
2463 break;
14f066ba
JP		 2464 case NLA_FLAG:
2465 opt_type = TEAM_OPTION_TYPE_BOOL;
2466 break;
69821638
JP		 2467 case NLA_S32:
2468 opt_type = TEAM_OPTION_TYPE_S32;
2469 break;
3d249d4c
JP		 2470 default:
2471 goto team_put;
2472 }
2473
14f066ba
JP		 2474 attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA];
2475 if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) {
2476 err = -EINVAL;
2477 goto team_put;
2478 }
2479
80f7c668 2480 opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]);
b1303326
JP		 2481 attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX];
2482 if (attr)
2483 opt_port_ifindex = nla_get_u32(attr);
2484
2485 attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX];
2486 if (attr) {
2487 opt_is_array = true;
2488 opt_array_index = nla_get_u32(attr);
2489 }
80f7c668
JP		 2490
2491 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2492 struct team_option *option = opt_inst->option;
80f7c668 2493 struct team_gsetter_ctx ctx;
85d59a87 2494 struct team_option_inst_info *opt_inst_info;
80f7c668 2495 int tmp_ifindex;
3d249d4c 2496
85d59a87
JP		 2497 opt_inst_info = &opt_inst->info;
2498 tmp_ifindex = opt_inst_info->port ?
2499 opt_inst_info->port->dev->ifindex : 0;
3d249d4c 2500 if (option->type != opt_type ||
80f7c668 2501 strcmp(option->name, opt_name) ||
b1303326
JP		 2502 tmp_ifindex != opt_port_ifindex ||
2503 (option->array_size && !opt_is_array) ||
85d59a87 2504 opt_inst_info->array_index != opt_array_index)
3d249d4c
JP		 2505 continue;
2506 opt_found = true;
85d59a87 2507 ctx.info = opt_inst_info;
3d249d4c
JP		 2508 switch (opt_type) {
2509 case TEAM_OPTION_TYPE_U32:
14f066ba 2510 ctx.data.u32_val = nla_get_u32(attr_data);
3d249d4c
JP		 2511 break;
2512 case TEAM_OPTION_TYPE_STRING:
14f066ba 2513 if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) {
2615598f
JP		 2514 err = -EINVAL;
2515 goto team_put;
2516 }
14f066ba 2517 ctx.data.str_val = nla_data(attr_data);
3d249d4c 2518 break;
2615598f 2519 case TEAM_OPTION_TYPE_BINARY:
14f066ba
JP		 2520 ctx.data.bin_val.len = nla_len(attr_data);
2521 ctx.data.bin_val.ptr = nla_data(attr_data);
2522 break;
2523 case TEAM_OPTION_TYPE_BOOL:
2524 ctx.data.bool_val = attr_data ? true : false;
2615598f 2525 break;
69821638
JP		 2526 case TEAM_OPTION_TYPE_S32:
2527 ctx.data.s32_val = nla_get_s32(attr_data);
2528 break;
3d249d4c
JP		 2529 default:
2530 BUG();
2531 }
80f7c668 2532 err = team_option_set(team, opt_inst, &ctx);
3d249d4c
JP		 2533 if (err)
2534 goto team_put;
2fcdb2c9
JP		 2535 opt_inst->changed = true;
2536 list_add(&opt_inst->tmp_list, &opt_inst_list);
3d249d4c
JP		 2537 }
2538 if (!opt_found) {
2539 err = -ENOENT;
2540 goto team_put;
2541 }
2542 }
2543
2fcdb2c9
JP		 2544 err = team_nl_send_event_options_get(team, &opt_inst_list);
2545
3d249d4c
JP		 2546team_put:
2547 team_nl_team_put(team);
2548
2549 return err;
2550}
2551
d90f889e
JP		 2552static int team_nl_fill_one_port_get(struct sk_buff *skb,
2553 struct team_port *port)
2554{
2555 struct nlattr *port_item;
2556
2557 port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT);
2558 if (!port_item)
2559 goto nest_cancel;
2560 if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex))
2561 goto nest_cancel;
2562 if (port->changed) {
2563 if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED))
2564 goto nest_cancel;
2565 port->changed = false;
2566 }
2567 if ((port->removed &&
2568 nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) ||
2569 (port->state.linkup &&
2570 nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) ||
2571 nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) ||
2572 nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex))
2573 goto nest_cancel;
2574 nla_nest_end(skb, port_item);
2575 return 0;
2576
2577nest_cancel:
2578 nla_nest_cancel(skb, port_item);
2579 return -EMSGSIZE;
2580}
2581
2582static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
2583 int flags, team_nl_send_func_t *send_func,
2584 struct team_port *one_port)
3d249d4c
JP		 2585{
2586 struct nlattr *port_list;
d90f889e 2587 struct nlmsghdr *nlh;
3d249d4c
JP		 2588 void *hdr;
2589 struct team_port *port;
d90f889e
JP		 2590 int err;
2591 struct sk_buff *skb = NULL;
2592 bool incomplete;
2593 int i;
3d249d4c 2594
3f3e7ce4
JP		 2595 port = list_first_entry_or_null(&team->port_list,
2596 struct team_port, list);
d90f889e
JP		 2597
2598start_again:
2599 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2600 if (err)
2601 return err;
2602
2603 hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
3d249d4c 2604 TEAM_CMD_PORT_LIST_GET);
a326e6dd
WY		 2605 if (!hdr)
2606 return -EMSGSIZE;
3d249d4c 2607
86ebb02d
DM		 2608 if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
2609 goto nla_put_failure;
3d249d4c
JP		 2610 port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT);
2611 if (!port_list)
3221c646 2612 goto nla_put_failure;
3d249d4c 2613
d90f889e
JP		 2614 i = 0;
2615 incomplete = false;
3d249d4c 2616
d90f889e
JP		 2617 /* If one port is selected, called wants to send port list containing
2618 * only this port. Otherwise go through all listed ports and send all
2619 */
2620 if (one_port) {
2621 err = team_nl_fill_one_port_get(skb, one_port);
2622 if (err)
2623 goto errout;
3f3e7ce4
JP		 2624 } else if (port) {
2625 list_for_each_entry_from(port, &team->port_list, list) {
d90f889e
JP		 2626 err = team_nl_fill_one_port_get(skb, port);
2627 if (err) {
2628 if (err == -EMSGSIZE) {
2629 if (!i)
2630 goto errout;
2631 incomplete = true;
2632 break;
2633 }
2634 goto errout;
2635 }
2636 i++;
b82b9183 2637 }
3d249d4c
JP		 2638 }
2639
2640 nla_nest_end(skb, port_list);
d90f889e
JP		 2641 genlmsg_end(skb, hdr);
2642 if (incomplete)
2643 goto start_again;
2644
2645send_done:
2646 nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI);
2647 if (!nlh) {
2648 err = __send_and_alloc_skb(&skb, team, portid, send_func);
2649 if (err)
2650 goto errout;
2651 goto send_done;
2652 }
2653
2654 return send_func(skb, team, portid);
3d249d4c
JP		 2655
2656nla_put_failure:
d90f889e
JP		 2657 err = -EMSGSIZE;
2658errout:
3d249d4c 2659 genlmsg_cancel(skb, hdr);
d90f889e
JP		 2660 nlmsg_free(skb);
2661 return err;
3d249d4c
JP		 2662}
2663
2664static int team_nl_cmd_port_list_get(struct sk_buff *skb,
2665 struct genl_info *info)
2666{
2667 struct team *team;
2668 int err;
2669
2670 team = team_nl_team_get(info);
2671 if (!team)
2672 return -EINVAL;
2673
d90f889e
JP		 2674 err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq,
2675 NLM_F_ACK, team_nl_send_unicast, NULL);
3d249d4c
JP		 2676
2677 team_nl_team_put(team);
2678
2679 return err;
2680}
2681
4534de83 2682static const struct genl_ops team_nl_ops[] = {
3d249d4c
JP		 2683 {
2684 .cmd = TEAM_CMD_NOOP,
2685 .doit = team_nl_cmd_noop,
2686 .policy = team_nl_policy,
2687 },
2688 {
2689 .cmd = TEAM_CMD_OPTIONS_SET,
2690 .doit = team_nl_cmd_options_set,
2691 .policy = team_nl_policy,
2692 .flags = GENL_ADMIN_PERM,
2693 },
2694 {
2695 .cmd = TEAM_CMD_OPTIONS_GET,
2696 .doit = team_nl_cmd_options_get,
2697 .policy = team_nl_policy,
2698 .flags = GENL_ADMIN_PERM,
2699 },
2700 {
2701 .cmd = TEAM_CMD_PORT_LIST_GET,
2702 .doit = team_nl_cmd_port_list_get,
2703 .policy = team_nl_policy,
2704 .flags = GENL_ADMIN_PERM,
2705 },
2706};
2707
2a94fe48
JB		 2708static const struct genl_multicast_group team_nl_mcgrps[] = {
2709 { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, },
3d249d4c
JP		 2710};
2711
9b00cf2d 2712static int team_nl_send_multicast(struct sk_buff *skb,
15e47304 2713 struct team *team, u32 portid)
9b00cf2d 2714{
68eb5503 2715 return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev),
2a94fe48 2716 skb, 0, 0, GFP_KERNEL);
9b00cf2d
JP		 2717}
2718
01048d9a
JP		 2719static int team_nl_send_event_options_get(struct team *team,
2720 struct list_head *sel_opt_inst_list)
3d249d4c 2721{
9b00cf2d
JP		 2722 return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast,
2723 sel_opt_inst_list);
3d249d4c
JP		 2724}
2725
d90f889e
JP		 2726static int team_nl_send_event_port_get(struct team *team,
2727 struct team_port *port)
3d249d4c 2728{
d90f889e
JP		 2729 return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast,
2730 port);
3d249d4c
JP		 2731}
2732
2733static int team_nl_init(void)
2734{
2a94fe48
JB		 2735 return genl_register_family_with_ops_groups(&team_nl_family, team_nl_ops,
2736 team_nl_mcgrps);
3d249d4c
JP		 2737}
2738
2739static void team_nl_fini(void)
2740{
2741 genl_unregister_family(&team_nl_family);
2742}
2743
2744
2745/******************
2746 * Change checkers
2747 ******************/
2748
b82b9183 2749static void __team_options_change_check(struct team *team)
3d249d4c
JP		 2750{
2751 int err;
01048d9a
JP		 2752 struct team_option_inst *opt_inst;
2753 LIST_HEAD(sel_opt_inst_list);
3d249d4c 2754
01048d9a
JP		 2755 list_for_each_entry(opt_inst, &team->option_inst_list, list) {
2756 if (opt_inst->changed)
2757 list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
2758 }
2759 err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
0c7517e9 2760 if (err && err != -ESRCH)
9b00cf2d
JP		 2761 netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n",
2762 err);
3d249d4c
JP		 2763}
2764
2765/* rtnl lock is held */
10f3f51d
JP		 2766
2767static void __team_port_change_send(struct team_port *port, bool linkup)
3d249d4c
JP		 2768{
2769 int err;
2770
b82b9183 2771 port->changed = true;
71472ec1
JP		 2772 port->state.linkup = linkup;
2773 team_refresh_port_linkup(port);
3d249d4c
JP		 2774 if (linkup) {
2775 struct ethtool_cmd ecmd;
2776
2777 err = __ethtool_get_settings(port->dev, &ecmd);
2778 if (!err) {
71472ec1
JP		 2779 port->state.speed = ethtool_cmd_speed(&ecmd);
2780 port->state.duplex = ecmd.duplex;
3d249d4c
JP		 2781 goto send_event;
2782 }
2783 }
71472ec1
JP		 2784 port->state.speed = 0;
2785 port->state.duplex = 0;
3d249d4c
JP		 2786
2787send_event:
d90f889e 2788 err = team_nl_send_event_port_get(port->team, port);
0c7517e9
JP		 2789 if (err && err != -ESRCH)
2790 netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n",
2791 port->dev->name, err);
3d249d4c
JP		 2792
2793}
2794
06a7fc42
FL		 2795static void __team_carrier_check(struct team *team)
2796{
2797 struct team_port *port;
2798 bool team_linkup;
2799
e185483e
FL		 2800 if (team->user_carrier_enabled)
2801 return;
2802
06a7fc42
FL		 2803 team_linkup = false;
2804 list_for_each_entry(port, &team->port_list, list) {
2805 if (port->linkup) {
2806 team_linkup = true;
2807 break;
2808 }
2809 }
2810
2811 if (team_linkup)
2812 netif_carrier_on(team->dev);
2813 else
2814 netif_carrier_off(team->dev);
2815}
2816
10f3f51d
JP		 2817static void __team_port_change_check(struct team_port *port, bool linkup)
2818{
2819 if (port->state.linkup != linkup)
2820 __team_port_change_send(port, linkup);
06a7fc42 2821 __team_carrier_check(port->team);
10f3f51d
JP		 2822}
2823
2824static void __team_port_change_port_added(struct team_port *port, bool linkup)
2825{
2826 __team_port_change_send(port, linkup);
06a7fc42 2827 __team_carrier_check(port->team);
10f3f51d
JP		 2828}
2829
2830static void __team_port_change_port_removed(struct team_port *port)
2831{
2832 port->removed = true;
2833 __team_port_change_send(port, false);
06a7fc42 2834 __team_carrier_check(port->team);
10f3f51d
JP		 2835}
2836
3d249d4c
JP		 2837static void team_port_change_check(struct team_port *port, bool linkup)
2838{
2839 struct team *team = port->team;
2840
61dc3461 2841 mutex_lock(&team->lock);
3d249d4c 2842 __team_port_change_check(port, linkup);
61dc3461 2843 mutex_unlock(&team->lock);
3d249d4c
JP		 2844}
2845
0f1aad2b 2846
3d249d4c
JP		 2847/************************************
2848 * Net device notifier event handler
2849 ************************************/
2850
2851static int team_device_event(struct notifier_block *unused,
2852 unsigned long event, void *ptr)
2853{
351638e7 2854 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3d249d4c
JP		 2855 struct team_port *port;
2856
2857 port = team_port_get_rtnl(dev);
2858 if (!port)
2859 return NOTIFY_DONE;
2860
2861 switch (event) {
2862 case NETDEV_UP:
2863 if (netif_carrier_ok(dev))
2864 team_port_change_check(port, true);
ed2da03c 2865 break;
3d249d4c
JP		 2866 case NETDEV_DOWN:
2867 team_port_change_check(port, false);
ed2da03c 2868 break;
3d249d4c
JP		 2869 case NETDEV_CHANGE:
2870 if (netif_running(port->dev))
2871 team_port_change_check(port,
2872 !!netif_carrier_ok(port->dev));
2873 break;
2874 case NETDEV_UNREGISTER:
2875 team_del_slave(port->team->dev, dev);
2876 break;
2877 case NETDEV_FEAT_CHANGE:
2878 team_compute_features(port->team);
2879 break;
b01f236c 2880 case NETDEV_PRECHANGEMTU:
3d249d4c 2881 /* Forbid to change mtu of underlaying device */
9d0d68fa
JP		 2882 if (!port->team->port_mtu_change_allowed)
2883 return NOTIFY_BAD;
2884 break;
3d249d4c
JP		 2885 case NETDEV_PRE_TYPE_CHANGE:
2886 /* Forbid to change type of underlaying device */
2887 return NOTIFY_BAD;
4aa5dee4
JP		 2888 case NETDEV_RESEND_IGMP:
2889 /* Propagate to master device */
2890 call_netdevice_notifiers(event, port->team->dev);
2891 break;
3d249d4c
JP		 2892 }
2893 return NOTIFY_DONE;
2894}
2895
2896static struct notifier_block team_notifier_block __read_mostly = {
2897 .notifier_call = team_device_event,
2898};
2899
2900
2901/***********************
2902 * Module init and exit
2903 ***********************/
2904
2905static int __init team_module_init(void)
2906{
2907 int err;
2908
2909 register_netdevice_notifier(&team_notifier_block);
2910
2911 err = rtnl_link_register(&team_link_ops);
2912 if (err)
2913 goto err_rtnl_reg;
2914
2915 err = team_nl_init();
2916 if (err)
2917 goto err_nl_init;
2918
2919 return 0;
2920
2921err_nl_init:
2922 rtnl_link_unregister(&team_link_ops);
2923
2924err_rtnl_reg:
2925 unregister_netdevice_notifier(&team_notifier_block);
2926
2927 return err;
2928}
2929
2930static void __exit team_module_exit(void)
2931{
2932 team_nl_fini();
2933 rtnl_link_unregister(&team_link_ops);
2934 unregister_netdevice_notifier(&team_notifier_block);
2935}
2936
2937module_init(team_module_init);
2938module_exit(team_module_exit);
2939
2940MODULE_LICENSE("GPL v2");
2941MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>");
2942MODULE_DESCRIPTION("Ethernet team device driver");
2943MODULE_ALIAS_RTNL_LINK(DRV_NAME);
Linux 6.x block layer and io_uring tree(s)