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