Commit | Line | Data |
---|---|---|
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> |
3d249d4c JP |
31 | #include <linux/if_team.h> |
32 | ||
33 | #define DRV_NAME "team" | |
34 | ||
35 | ||
36 | /********** | |
37 | * Helpers | |
38 | **********/ | |
39 | ||
40 | #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT) | |
41 | ||
42 | static struct team_port *team_port_get_rcu(const struct net_device *dev) | |
43 | { | |
44 | struct team_port *port = rcu_dereference(dev->rx_handler_data); | |
45 | ||
46 | return team_port_exists(dev) ? port : NULL; | |
47 | } | |
48 | ||
49 | static 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 | /* | |
57 | * Since the ability to change mac address for open port device is tested in | |
58 | * team_port_add, this function can be called without control of return value | |
59 | */ | |
60 | static int __set_port_mac(struct net_device *port_dev, | |
61 | const unsigned char *dev_addr) | |
62 | { | |
63 | struct sockaddr addr; | |
64 | ||
65 | memcpy(addr.sa_data, dev_addr, ETH_ALEN); | |
66 | addr.sa_family = ARPHRD_ETHER; | |
67 | return dev_set_mac_address(port_dev, &addr); | |
68 | } | |
69 | ||
cade4555 | 70 | static int team_port_set_orig_mac(struct team_port *port) |
3d249d4c JP |
71 | { |
72 | return __set_port_mac(port->dev, port->orig.dev_addr); | |
73 | } | |
74 | ||
75 | int team_port_set_team_mac(struct team_port *port) | |
76 | { | |
77 | return __set_port_mac(port->dev, port->team->dev->dev_addr); | |
78 | } | |
79 | EXPORT_SYMBOL(team_port_set_team_mac); | |
80 | ||
71472ec1 JP |
81 | static void team_refresh_port_linkup(struct team_port *port) |
82 | { | |
83 | port->linkup = port->user.linkup_enabled ? port->user.linkup : | |
84 | port->state.linkup; | |
85 | } | |
3d249d4c | 86 | |
0f1aad2b | 87 | |
3d249d4c JP |
88 | /******************* |
89 | * Options handling | |
90 | *******************/ | |
91 | ||
80f7c668 JP |
92 | struct team_option_inst { /* One for each option instance */ |
93 | struct list_head list; | |
01048d9a | 94 | struct list_head tmp_list; |
80f7c668 | 95 | struct team_option *option; |
85d59a87 | 96 | struct team_option_inst_info info; |
80f7c668 JP |
97 | bool changed; |
98 | bool removed; | |
99 | }; | |
100 | ||
101 | static struct team_option *__team_find_option(struct team *team, | |
102 | const char *opt_name) | |
358b8382 JP |
103 | { |
104 | struct team_option *option; | |
105 | ||
106 | list_for_each_entry(option, &team->option_list, list) { | |
107 | if (strcmp(option->name, opt_name) == 0) | |
108 | return option; | |
109 | } | |
110 | return NULL; | |
111 | } | |
112 | ||
80f7c668 JP |
113 | static void __team_option_inst_del(struct team_option_inst *opt_inst) |
114 | { | |
115 | list_del(&opt_inst->list); | |
116 | kfree(opt_inst); | |
117 | } | |
118 | ||
119 | static void __team_option_inst_del_option(struct team *team, | |
120 | struct team_option *option) | |
121 | { | |
122 | struct team_option_inst *opt_inst, *tmp; | |
123 | ||
124 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
125 | if (opt_inst->option == option) | |
126 | __team_option_inst_del(opt_inst); | |
127 | } | |
128 | } | |
129 | ||
b1303326 JP |
130 | static int __team_option_inst_add(struct team *team, struct team_option *option, |
131 | struct team_port *port) | |
132 | { | |
133 | struct team_option_inst *opt_inst; | |
134 | unsigned int array_size; | |
135 | unsigned int i; | |
85d59a87 | 136 | int err; |
b1303326 JP |
137 | |
138 | array_size = option->array_size; | |
139 | if (!array_size) | |
140 | array_size = 1; /* No array but still need one instance */ | |
141 | ||
142 | for (i = 0; i < array_size; i++) { | |
143 | opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL); | |
144 | if (!opt_inst) | |
145 | return -ENOMEM; | |
146 | opt_inst->option = option; | |
85d59a87 JP |
147 | opt_inst->info.port = port; |
148 | opt_inst->info.array_index = i; | |
b1303326 JP |
149 | opt_inst->changed = true; |
150 | opt_inst->removed = false; | |
151 | list_add_tail(&opt_inst->list, &team->option_inst_list); | |
85d59a87 JP |
152 | if (option->init) { |
153 | err = option->init(team, &opt_inst->info); | |
154 | if (err) | |
155 | return err; | |
156 | } | |
157 | ||
b1303326 JP |
158 | } |
159 | return 0; | |
160 | } | |
161 | ||
80f7c668 JP |
162 | static int __team_option_inst_add_option(struct team *team, |
163 | struct team_option *option) | |
164 | { | |
165 | struct team_port *port; | |
166 | int err; | |
167 | ||
b1303326 | 168 | if (!option->per_port) { |
f88725ff | 169 | err = __team_option_inst_add(team, option, NULL); |
b1303326 JP |
170 | if (err) |
171 | goto inst_del_option; | |
172 | } | |
80f7c668 JP |
173 | |
174 | list_for_each_entry(port, &team->port_list, list) { | |
175 | err = __team_option_inst_add(team, option, port); | |
176 | if (err) | |
177 | goto inst_del_option; | |
178 | } | |
179 | return 0; | |
180 | ||
181 | inst_del_option: | |
182 | __team_option_inst_del_option(team, option); | |
183 | return err; | |
184 | } | |
185 | ||
186 | static void __team_option_inst_mark_removed_option(struct team *team, | |
187 | struct team_option *option) | |
188 | { | |
189 | struct team_option_inst *opt_inst; | |
190 | ||
191 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
192 | if (opt_inst->option == option) { | |
193 | opt_inst->changed = true; | |
194 | opt_inst->removed = true; | |
195 | } | |
196 | } | |
197 | } | |
198 | ||
199 | static void __team_option_inst_del_port(struct team *team, | |
200 | struct team_port *port) | |
201 | { | |
202 | struct team_option_inst *opt_inst, *tmp; | |
203 | ||
204 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
205 | if (opt_inst->option->per_port && | |
85d59a87 | 206 | opt_inst->info.port == port) |
80f7c668 JP |
207 | __team_option_inst_del(opt_inst); |
208 | } | |
209 | } | |
210 | ||
211 | static int __team_option_inst_add_port(struct team *team, | |
212 | struct team_port *port) | |
213 | { | |
214 | struct team_option *option; | |
215 | int err; | |
216 | ||
217 | list_for_each_entry(option, &team->option_list, list) { | |
218 | if (!option->per_port) | |
219 | continue; | |
220 | err = __team_option_inst_add(team, option, port); | |
221 | if (err) | |
222 | goto inst_del_port; | |
223 | } | |
224 | return 0; | |
225 | ||
226 | inst_del_port: | |
227 | __team_option_inst_del_port(team, port); | |
228 | return err; | |
229 | } | |
230 | ||
231 | static void __team_option_inst_mark_removed_port(struct team *team, | |
232 | struct team_port *port) | |
233 | { | |
234 | struct team_option_inst *opt_inst; | |
235 | ||
236 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
85d59a87 | 237 | if (opt_inst->info.port == port) { |
80f7c668 JP |
238 | opt_inst->changed = true; |
239 | opt_inst->removed = true; | |
240 | } | |
241 | } | |
242 | } | |
243 | ||
244 | static int __team_options_register(struct team *team, | |
245 | const struct team_option *option, | |
246 | size_t option_count) | |
3d249d4c JP |
247 | { |
248 | int i; | |
2bba19ff | 249 | struct team_option **dst_opts; |
358b8382 | 250 | int err; |
3d249d4c | 251 | |
2bba19ff JP |
252 | dst_opts = kzalloc(sizeof(struct team_option *) * option_count, |
253 | GFP_KERNEL); | |
254 | if (!dst_opts) | |
255 | return -ENOMEM; | |
358b8382 | 256 | for (i = 0; i < option_count; i++, option++) { |
358b8382 JP |
257 | if (__team_find_option(team, option->name)) { |
258 | err = -EEXIST; | |
80f7c668 | 259 | goto alloc_rollback; |
358b8382 | 260 | } |
f8a15af0 JP |
261 | dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); |
262 | if (!dst_opts[i]) { | |
358b8382 | 263 | err = -ENOMEM; |
80f7c668 | 264 | goto alloc_rollback; |
358b8382 | 265 | } |
358b8382 JP |
266 | } |
267 | ||
b82b9183 | 268 | for (i = 0; i < option_count; i++) { |
80f7c668 JP |
269 | err = __team_option_inst_add_option(team, dst_opts[i]); |
270 | if (err) | |
271 | goto inst_rollback; | |
358b8382 | 272 | list_add_tail(&dst_opts[i]->list, &team->option_list); |
b82b9183 | 273 | } |
358b8382 | 274 | |
2bba19ff | 275 | kfree(dst_opts); |
358b8382 JP |
276 | return 0; |
277 | ||
80f7c668 JP |
278 | inst_rollback: |
279 | for (i--; i >= 0; i--) | |
280 | __team_option_inst_del_option(team, dst_opts[i]); | |
281 | ||
282 | i = option_count - 1; | |
283 | alloc_rollback: | |
284 | for (i--; i >= 0; i--) | |
358b8382 JP |
285 | kfree(dst_opts[i]); |
286 | ||
2bba19ff | 287 | kfree(dst_opts); |
358b8382 | 288 | return err; |
3d249d4c | 289 | } |
358b8382 | 290 | |
b82b9183 JP |
291 | static void __team_options_mark_removed(struct team *team, |
292 | const struct team_option *option, | |
293 | size_t option_count) | |
294 | { | |
295 | int i; | |
296 | ||
297 | for (i = 0; i < option_count; i++, option++) { | |
298 | struct team_option *del_opt; | |
3d249d4c | 299 | |
b82b9183 | 300 | del_opt = __team_find_option(team, option->name); |
80f7c668 JP |
301 | if (del_opt) |
302 | __team_option_inst_mark_removed_option(team, del_opt); | |
b82b9183 JP |
303 | } |
304 | } | |
3d249d4c JP |
305 | |
306 | static void __team_options_unregister(struct team *team, | |
358b8382 | 307 | const struct team_option *option, |
3d249d4c JP |
308 | size_t option_count) |
309 | { | |
310 | int i; | |
311 | ||
358b8382 JP |
312 | for (i = 0; i < option_count; i++, option++) { |
313 | struct team_option *del_opt; | |
314 | ||
315 | del_opt = __team_find_option(team, option->name); | |
316 | if (del_opt) { | |
80f7c668 | 317 | __team_option_inst_del_option(team, del_opt); |
358b8382 JP |
318 | list_del(&del_opt->list); |
319 | kfree(del_opt); | |
320 | } | |
321 | } | |
3d249d4c JP |
322 | } |
323 | ||
b82b9183 JP |
324 | static void __team_options_change_check(struct team *team); |
325 | ||
326 | int team_options_register(struct team *team, | |
327 | const struct team_option *option, | |
328 | size_t option_count) | |
329 | { | |
330 | int err; | |
331 | ||
332 | err = __team_options_register(team, option, option_count); | |
333 | if (err) | |
334 | return err; | |
335 | __team_options_change_check(team); | |
336 | return 0; | |
337 | } | |
338 | EXPORT_SYMBOL(team_options_register); | |
339 | ||
358b8382 JP |
340 | void team_options_unregister(struct team *team, |
341 | const struct team_option *option, | |
3d249d4c JP |
342 | size_t option_count) |
343 | { | |
b82b9183 JP |
344 | __team_options_mark_removed(team, option, option_count); |
345 | __team_options_change_check(team); | |
3d249d4c | 346 | __team_options_unregister(team, option, option_count); |
3d249d4c JP |
347 | } |
348 | EXPORT_SYMBOL(team_options_unregister); | |
349 | ||
80f7c668 JP |
350 | static int team_option_get(struct team *team, |
351 | struct team_option_inst *opt_inst, | |
352 | struct team_gsetter_ctx *ctx) | |
353 | { | |
f82b959d JP |
354 | if (!opt_inst->option->getter) |
355 | return -EOPNOTSUPP; | |
80f7c668 JP |
356 | return opt_inst->option->getter(team, ctx); |
357 | } | |
358 | ||
359 | static int team_option_set(struct team *team, | |
360 | struct team_option_inst *opt_inst, | |
361 | struct team_gsetter_ctx *ctx) | |
3d249d4c | 362 | { |
f82b959d JP |
363 | if (!opt_inst->option->setter) |
364 | return -EOPNOTSUPP; | |
2fcdb2c9 | 365 | return opt_inst->option->setter(team, ctx); |
3d249d4c JP |
366 | } |
367 | ||
0f1aad2b JP |
368 | void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info) |
369 | { | |
370 | struct team_option_inst *opt_inst; | |
371 | ||
372 | opt_inst = container_of(opt_inst_info, struct team_option_inst, info); | |
373 | opt_inst->changed = true; | |
374 | } | |
375 | EXPORT_SYMBOL(team_option_inst_set_change); | |
376 | ||
377 | void team_options_change_check(struct team *team) | |
378 | { | |
379 | __team_options_change_check(team); | |
380 | } | |
381 | EXPORT_SYMBOL(team_options_change_check); | |
382 | ||
383 | ||
3d249d4c JP |
384 | /**************** |
385 | * Mode handling | |
386 | ****************/ | |
387 | ||
388 | static LIST_HEAD(mode_list); | |
389 | static DEFINE_SPINLOCK(mode_list_lock); | |
390 | ||
0402788a JP |
391 | struct team_mode_item { |
392 | struct list_head list; | |
393 | const struct team_mode *mode; | |
394 | }; | |
395 | ||
396 | static struct team_mode_item *__find_mode(const char *kind) | |
3d249d4c | 397 | { |
0402788a | 398 | struct team_mode_item *mitem; |
3d249d4c | 399 | |
0402788a JP |
400 | list_for_each_entry(mitem, &mode_list, list) { |
401 | if (strcmp(mitem->mode->kind, kind) == 0) | |
402 | return mitem; | |
3d249d4c JP |
403 | } |
404 | return NULL; | |
405 | } | |
406 | ||
407 | static bool is_good_mode_name(const char *name) | |
408 | { | |
409 | while (*name != '\0') { | |
410 | if (!isalpha(*name) && !isdigit(*name) && *name != '_') | |
411 | return false; | |
412 | name++; | |
413 | } | |
414 | return true; | |
415 | } | |
416 | ||
0402788a | 417 | int team_mode_register(const struct team_mode *mode) |
3d249d4c JP |
418 | { |
419 | int err = 0; | |
0402788a | 420 | struct team_mode_item *mitem; |
3d249d4c JP |
421 | |
422 | if (!is_good_mode_name(mode->kind) || | |
423 | mode->priv_size > TEAM_MODE_PRIV_SIZE) | |
424 | return -EINVAL; | |
0402788a JP |
425 | |
426 | mitem = kmalloc(sizeof(*mitem), GFP_KERNEL); | |
427 | if (!mitem) | |
428 | return -ENOMEM; | |
429 | ||
3d249d4c JP |
430 | spin_lock(&mode_list_lock); |
431 | if (__find_mode(mode->kind)) { | |
432 | err = -EEXIST; | |
0402788a | 433 | kfree(mitem); |
3d249d4c JP |
434 | goto unlock; |
435 | } | |
0402788a JP |
436 | mitem->mode = mode; |
437 | list_add_tail(&mitem->list, &mode_list); | |
3d249d4c JP |
438 | unlock: |
439 | spin_unlock(&mode_list_lock); | |
440 | return err; | |
441 | } | |
442 | EXPORT_SYMBOL(team_mode_register); | |
443 | ||
0402788a | 444 | void team_mode_unregister(const struct team_mode *mode) |
3d249d4c | 445 | { |
0402788a JP |
446 | struct team_mode_item *mitem; |
447 | ||
3d249d4c | 448 | spin_lock(&mode_list_lock); |
0402788a JP |
449 | mitem = __find_mode(mode->kind); |
450 | if (mitem) { | |
451 | list_del_init(&mitem->list); | |
452 | kfree(mitem); | |
453 | } | |
3d249d4c | 454 | spin_unlock(&mode_list_lock); |
3d249d4c JP |
455 | } |
456 | EXPORT_SYMBOL(team_mode_unregister); | |
457 | ||
0402788a | 458 | static const struct team_mode *team_mode_get(const char *kind) |
3d249d4c | 459 | { |
0402788a JP |
460 | struct team_mode_item *mitem; |
461 | const struct team_mode *mode = NULL; | |
3d249d4c JP |
462 | |
463 | spin_lock(&mode_list_lock); | |
0402788a JP |
464 | mitem = __find_mode(kind); |
465 | if (!mitem) { | |
3d249d4c JP |
466 | spin_unlock(&mode_list_lock); |
467 | request_module("team-mode-%s", kind); | |
468 | spin_lock(&mode_list_lock); | |
0402788a | 469 | mitem = __find_mode(kind); |
3d249d4c | 470 | } |
0402788a JP |
471 | if (mitem) { |
472 | mode = mitem->mode; | |
3d249d4c JP |
473 | if (!try_module_get(mode->owner)) |
474 | mode = NULL; | |
0402788a | 475 | } |
3d249d4c JP |
476 | |
477 | spin_unlock(&mode_list_lock); | |
478 | return mode; | |
479 | } | |
480 | ||
481 | static void team_mode_put(const struct team_mode *mode) | |
482 | { | |
483 | module_put(mode->owner); | |
484 | } | |
485 | ||
486 | static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) | |
487 | { | |
488 | dev_kfree_skb_any(skb); | |
489 | return false; | |
490 | } | |
491 | ||
492 | rx_handler_result_t team_dummy_receive(struct team *team, | |
493 | struct team_port *port, | |
494 | struct sk_buff *skb) | |
495 | { | |
496 | return RX_HANDLER_ANOTHER; | |
497 | } | |
498 | ||
d299cd51 JP |
499 | static const struct team_mode __team_no_mode = { |
500 | .kind = "*NOMODE*", | |
501 | }; | |
502 | ||
503 | static bool team_is_mode_set(struct team *team) | |
504 | { | |
505 | return team->mode != &__team_no_mode; | |
506 | } | |
507 | ||
508 | static void team_set_no_mode(struct team *team) | |
509 | { | |
510 | team->mode = &__team_no_mode; | |
511 | } | |
512 | ||
122bb046 | 513 | static void __team_adjust_ops(struct team *team, int en_port_count) |
3d249d4c JP |
514 | { |
515 | /* | |
516 | * To avoid checks in rx/tx skb paths, ensure here that non-null and | |
517 | * correct ops are always set. | |
518 | */ | |
519 | ||
122bb046 JP |
520 | if (!en_port_count || !team_is_mode_set(team) || |
521 | !team->mode->ops->transmit) | |
3d249d4c JP |
522 | team->ops.transmit = team_dummy_transmit; |
523 | else | |
524 | team->ops.transmit = team->mode->ops->transmit; | |
525 | ||
122bb046 JP |
526 | if (!en_port_count || !team_is_mode_set(team) || |
527 | !team->mode->ops->receive) | |
3d249d4c JP |
528 | team->ops.receive = team_dummy_receive; |
529 | else | |
530 | team->ops.receive = team->mode->ops->receive; | |
531 | } | |
532 | ||
122bb046 JP |
533 | static void team_adjust_ops(struct team *team) |
534 | { | |
535 | __team_adjust_ops(team, team->en_port_count); | |
536 | } | |
537 | ||
3d249d4c JP |
538 | /* |
539 | * We can benefit from the fact that it's ensured no port is present | |
540 | * at the time of mode change. Therefore no packets are in fly so there's no | |
541 | * need to set mode operations in any special way. | |
542 | */ | |
543 | static int __team_change_mode(struct team *team, | |
544 | const struct team_mode *new_mode) | |
545 | { | |
546 | /* Check if mode was previously set and do cleanup if so */ | |
d299cd51 | 547 | if (team_is_mode_set(team)) { |
3d249d4c JP |
548 | void (*exit_op)(struct team *team) = team->ops.exit; |
549 | ||
550 | /* Clear ops area so no callback is called any longer */ | |
551 | memset(&team->ops, 0, sizeof(struct team_mode_ops)); | |
552 | team_adjust_ops(team); | |
553 | ||
554 | if (exit_op) | |
555 | exit_op(team); | |
556 | team_mode_put(team->mode); | |
d299cd51 | 557 | team_set_no_mode(team); |
3d249d4c JP |
558 | /* zero private data area */ |
559 | memset(&team->mode_priv, 0, | |
560 | sizeof(struct team) - offsetof(struct team, mode_priv)); | |
561 | } | |
562 | ||
563 | if (!new_mode) | |
564 | return 0; | |
565 | ||
566 | if (new_mode->ops->init) { | |
567 | int err; | |
568 | ||
569 | err = new_mode->ops->init(team); | |
570 | if (err) | |
571 | return err; | |
572 | } | |
573 | ||
574 | team->mode = new_mode; | |
575 | memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); | |
576 | team_adjust_ops(team); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
581 | static int team_change_mode(struct team *team, const char *kind) | |
582 | { | |
0402788a | 583 | const struct team_mode *new_mode; |
3d249d4c JP |
584 | struct net_device *dev = team->dev; |
585 | int err; | |
586 | ||
587 | if (!list_empty(&team->port_list)) { | |
588 | netdev_err(dev, "No ports can be present during mode change\n"); | |
589 | return -EBUSY; | |
590 | } | |
591 | ||
d299cd51 | 592 | if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) { |
3d249d4c JP |
593 | netdev_err(dev, "Unable to change to the same mode the team is in\n"); |
594 | return -EINVAL; | |
595 | } | |
596 | ||
597 | new_mode = team_mode_get(kind); | |
598 | if (!new_mode) { | |
599 | netdev_err(dev, "Mode \"%s\" not found\n", kind); | |
600 | return -EINVAL; | |
601 | } | |
602 | ||
603 | err = __team_change_mode(team, new_mode); | |
604 | if (err) { | |
605 | netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); | |
606 | team_mode_put(new_mode); | |
607 | return err; | |
608 | } | |
609 | ||
610 | netdev_info(dev, "Mode changed to \"%s\"\n", kind); | |
611 | return 0; | |
612 | } | |
613 | ||
614 | ||
615 | /************************ | |
616 | * Rx path frame handler | |
617 | ************************/ | |
618 | ||
619 | /* note: already called with rcu_read_lock */ | |
620 | static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) | |
621 | { | |
622 | struct sk_buff *skb = *pskb; | |
623 | struct team_port *port; | |
624 | struct team *team; | |
625 | rx_handler_result_t res; | |
626 | ||
627 | skb = skb_share_check(skb, GFP_ATOMIC); | |
628 | if (!skb) | |
629 | return RX_HANDLER_CONSUMED; | |
630 | ||
631 | *pskb = skb; | |
632 | ||
633 | port = team_port_get_rcu(skb->dev); | |
634 | team = port->team; | |
19a0b58e JP |
635 | if (!team_port_enabled(port)) { |
636 | /* allow exact match delivery for disabled ports */ | |
637 | res = RX_HANDLER_EXACT; | |
638 | } else { | |
639 | res = team->ops.receive(team, port, skb); | |
640 | } | |
3d249d4c JP |
641 | if (res == RX_HANDLER_ANOTHER) { |
642 | struct team_pcpu_stats *pcpu_stats; | |
643 | ||
644 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
645 | u64_stats_update_begin(&pcpu_stats->syncp); | |
646 | pcpu_stats->rx_packets++; | |
647 | pcpu_stats->rx_bytes += skb->len; | |
648 | if (skb->pkt_type == PACKET_MULTICAST) | |
649 | pcpu_stats->rx_multicast++; | |
650 | u64_stats_update_end(&pcpu_stats->syncp); | |
651 | ||
652 | skb->dev = team->dev; | |
653 | } else { | |
654 | this_cpu_inc(team->pcpu_stats->rx_dropped); | |
655 | } | |
656 | ||
657 | return res; | |
658 | } | |
659 | ||
660 | ||
661 | /**************** | |
662 | * Port handling | |
663 | ****************/ | |
664 | ||
665 | static bool team_port_find(const struct team *team, | |
666 | const struct team_port *port) | |
667 | { | |
668 | struct team_port *cur; | |
669 | ||
670 | list_for_each_entry(cur, &team->port_list, list) | |
671 | if (cur == port) | |
672 | return true; | |
673 | return false; | |
674 | } | |
675 | ||
676 | /* | |
19a0b58e JP |
677 | * Enable/disable port by adding to enabled port hashlist and setting |
678 | * port->index (Might be racy so reader could see incorrect ifindex when | |
679 | * processing a flying packet, but that is not a problem). Write guarded | |
680 | * by team->lock. | |
3d249d4c | 681 | */ |
19a0b58e JP |
682 | static void team_port_enable(struct team *team, |
683 | struct team_port *port) | |
3d249d4c | 684 | { |
19a0b58e JP |
685 | if (team_port_enabled(port)) |
686 | return; | |
687 | port->index = team->en_port_count++; | |
3d249d4c JP |
688 | hlist_add_head_rcu(&port->hlist, |
689 | team_port_index_hash(team, port->index)); | |
122bb046 | 690 | team_adjust_ops(team); |
4bccfd17 JP |
691 | if (team->ops.port_enabled) |
692 | team->ops.port_enabled(team, port); | |
3d249d4c JP |
693 | } |
694 | ||
695 | static void __reconstruct_port_hlist(struct team *team, int rm_index) | |
696 | { | |
697 | int i; | |
698 | struct team_port *port; | |
699 | ||
19a0b58e | 700 | for (i = rm_index + 1; i < team->en_port_count; i++) { |
3d249d4c JP |
701 | port = team_get_port_by_index(team, i); |
702 | hlist_del_rcu(&port->hlist); | |
703 | port->index--; | |
704 | hlist_add_head_rcu(&port->hlist, | |
705 | team_port_index_hash(team, port->index)); | |
706 | } | |
707 | } | |
708 | ||
19a0b58e JP |
709 | static void team_port_disable(struct team *team, |
710 | struct team_port *port) | |
3d249d4c | 711 | { |
19a0b58e JP |
712 | if (!team_port_enabled(port)) |
713 | return; | |
4bccfd17 JP |
714 | if (team->ops.port_disabled) |
715 | team->ops.port_disabled(team, port); | |
3d249d4c | 716 | hlist_del_rcu(&port->hlist); |
122bb046 | 717 | __reconstruct_port_hlist(team, port->index); |
19a0b58e | 718 | port->index = -1; |
122bb046 JP |
719 | __team_adjust_ops(team, team->en_port_count - 1); |
720 | /* | |
721 | * Wait until readers see adjusted ops. This ensures that | |
722 | * readers never see team->en_port_count == 0 | |
723 | */ | |
724 | synchronize_rcu(); | |
725 | team->en_port_count--; | |
3d249d4c JP |
726 | } |
727 | ||
728 | #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \ | |
729 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ | |
730 | NETIF_F_HIGHDMA | NETIF_F_LRO) | |
731 | ||
732 | static void __team_compute_features(struct team *team) | |
733 | { | |
734 | struct team_port *port; | |
735 | u32 vlan_features = TEAM_VLAN_FEATURES; | |
736 | unsigned short max_hard_header_len = ETH_HLEN; | |
dc905951 | 737 | unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE; |
3d249d4c JP |
738 | |
739 | list_for_each_entry(port, &team->port_list, list) { | |
740 | vlan_features = netdev_increment_features(vlan_features, | |
741 | port->dev->vlan_features, | |
742 | TEAM_VLAN_FEATURES); | |
743 | ||
dc905951 | 744 | dst_release_flag &= port->dev->priv_flags; |
3d249d4c JP |
745 | if (port->dev->hard_header_len > max_hard_header_len) |
746 | max_hard_header_len = port->dev->hard_header_len; | |
747 | } | |
748 | ||
749 | team->dev->vlan_features = vlan_features; | |
750 | team->dev->hard_header_len = max_hard_header_len; | |
751 | ||
dc905951 JP |
752 | flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE; |
753 | team->dev->priv_flags = flags | dst_release_flag; | |
754 | ||
3d249d4c JP |
755 | netdev_change_features(team->dev); |
756 | } | |
757 | ||
758 | static void team_compute_features(struct team *team) | |
759 | { | |
61dc3461 | 760 | mutex_lock(&team->lock); |
3d249d4c | 761 | __team_compute_features(team); |
61dc3461 | 762 | mutex_unlock(&team->lock); |
3d249d4c JP |
763 | } |
764 | ||
765 | static int team_port_enter(struct team *team, struct team_port *port) | |
766 | { | |
767 | int err = 0; | |
768 | ||
769 | dev_hold(team->dev); | |
770 | port->dev->priv_flags |= IFF_TEAM_PORT; | |
771 | if (team->ops.port_enter) { | |
772 | err = team->ops.port_enter(team, port); | |
773 | if (err) { | |
774 | netdev_err(team->dev, "Device %s failed to enter team mode\n", | |
775 | port->dev->name); | |
776 | goto err_port_enter; | |
777 | } | |
778 | } | |
779 | ||
780 | return 0; | |
781 | ||
782 | err_port_enter: | |
783 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
784 | dev_put(team->dev); | |
785 | ||
786 | return err; | |
787 | } | |
788 | ||
789 | static void team_port_leave(struct team *team, struct team_port *port) | |
790 | { | |
791 | if (team->ops.port_leave) | |
792 | team->ops.port_leave(team, port); | |
793 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
794 | dev_put(team->dev); | |
795 | } | |
796 | ||
bd2d0837 | 797 | #ifdef CONFIG_NET_POLL_CONTROLLER |
47be03a2 AW |
798 | static int team_port_enable_netpoll(struct team *team, struct team_port *port, |
799 | gfp_t gfp) | |
bd2d0837 JP |
800 | { |
801 | struct netpoll *np; | |
802 | int err; | |
803 | ||
47be03a2 | 804 | np = kzalloc(sizeof(*np), gfp); |
bd2d0837 JP |
805 | if (!np) |
806 | return -ENOMEM; | |
807 | ||
47be03a2 | 808 | err = __netpoll_setup(np, port->dev, gfp); |
bd2d0837 JP |
809 | if (err) { |
810 | kfree(np); | |
811 | return err; | |
812 | } | |
813 | port->np = np; | |
814 | return err; | |
815 | } | |
816 | ||
817 | static void team_port_disable_netpoll(struct team_port *port) | |
818 | { | |
819 | struct netpoll *np = port->np; | |
820 | ||
821 | if (!np) | |
822 | return; | |
823 | port->np = NULL; | |
824 | ||
825 | /* Wait for transmitting packets to finish before freeing. */ | |
826 | synchronize_rcu_bh(); | |
827 | __netpoll_cleanup(np); | |
828 | kfree(np); | |
829 | } | |
830 | ||
831 | static struct netpoll_info *team_netpoll_info(struct team *team) | |
832 | { | |
833 | return team->dev->npinfo; | |
834 | } | |
835 | ||
836 | #else | |
47be03a2 AW |
837 | static int team_port_enable_netpoll(struct team *team, struct team_port *port, |
838 | gfp_t gfp) | |
bd2d0837 JP |
839 | { |
840 | return 0; | |
841 | } | |
842 | static void team_port_disable_netpoll(struct team_port *port) | |
843 | { | |
844 | } | |
845 | static struct netpoll_info *team_netpoll_info(struct team *team) | |
846 | { | |
847 | return NULL; | |
848 | } | |
849 | #endif | |
850 | ||
3d249d4c JP |
851 | static void __team_port_change_check(struct team_port *port, bool linkup); |
852 | ||
853 | static int team_port_add(struct team *team, struct net_device *port_dev) | |
854 | { | |
855 | struct net_device *dev = team->dev; | |
856 | struct team_port *port; | |
857 | char *portname = port_dev->name; | |
858 | int err; | |
859 | ||
860 | if (port_dev->flags & IFF_LOOPBACK || | |
861 | port_dev->type != ARPHRD_ETHER) { | |
862 | netdev_err(dev, "Device %s is of an unsupported type\n", | |
863 | portname); | |
864 | return -EINVAL; | |
865 | } | |
866 | ||
867 | if (team_port_exists(port_dev)) { | |
868 | netdev_err(dev, "Device %s is already a port " | |
869 | "of a team device\n", portname); | |
870 | return -EBUSY; | |
871 | } | |
872 | ||
873 | if (port_dev->flags & IFF_UP) { | |
874 | netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", | |
875 | portname); | |
876 | return -EBUSY; | |
877 | } | |
878 | ||
5149ee58 JP |
879 | port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size, |
880 | GFP_KERNEL); | |
3d249d4c JP |
881 | if (!port) |
882 | return -ENOMEM; | |
883 | ||
884 | port->dev = port_dev; | |
885 | port->team = team; | |
886 | ||
887 | port->orig.mtu = port_dev->mtu; | |
888 | err = dev_set_mtu(port_dev, dev->mtu); | |
889 | if (err) { | |
890 | netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); | |
891 | goto err_set_mtu; | |
892 | } | |
893 | ||
894 | memcpy(port->orig.dev_addr, port_dev->dev_addr, ETH_ALEN); | |
895 | ||
896 | err = team_port_enter(team, port); | |
897 | if (err) { | |
898 | netdev_err(dev, "Device %s failed to enter team mode\n", | |
899 | portname); | |
900 | goto err_port_enter; | |
901 | } | |
902 | ||
903 | err = dev_open(port_dev); | |
904 | if (err) { | |
905 | netdev_dbg(dev, "Device %s opening failed\n", | |
906 | portname); | |
907 | goto err_dev_open; | |
908 | } | |
909 | ||
57459185 JP |
910 | err = vlan_vids_add_by_dev(port_dev, dev); |
911 | if (err) { | |
912 | netdev_err(dev, "Failed to add vlan ids to device %s\n", | |
913 | portname); | |
914 | goto err_vids_add; | |
915 | } | |
916 | ||
bd2d0837 | 917 | if (team_netpoll_info(team)) { |
47be03a2 | 918 | err = team_port_enable_netpoll(team, port, GFP_KERNEL); |
bd2d0837 JP |
919 | if (err) { |
920 | netdev_err(dev, "Failed to enable netpoll on device %s\n", | |
921 | portname); | |
922 | goto err_enable_netpoll; | |
923 | } | |
924 | } | |
925 | ||
3d249d4c JP |
926 | err = netdev_set_master(port_dev, dev); |
927 | if (err) { | |
928 | netdev_err(dev, "Device %s failed to set master\n", portname); | |
929 | goto err_set_master; | |
930 | } | |
931 | ||
932 | err = netdev_rx_handler_register(port_dev, team_handle_frame, | |
933 | port); | |
934 | if (err) { | |
935 | netdev_err(dev, "Device %s failed to register rx_handler\n", | |
936 | portname); | |
937 | goto err_handler_register; | |
938 | } | |
939 | ||
35b384bd | 940 | err = __team_option_inst_add_port(team, port); |
80f7c668 JP |
941 | if (err) { |
942 | netdev_err(dev, "Device %s failed to add per-port options\n", | |
943 | portname); | |
944 | goto err_option_port_add; | |
945 | } | |
946 | ||
19a0b58e JP |
947 | port->index = -1; |
948 | team_port_enable(team, port); | |
949 | list_add_tail_rcu(&port->list, &team->port_list); | |
3d249d4c JP |
950 | __team_compute_features(team); |
951 | __team_port_change_check(port, !!netif_carrier_ok(port_dev)); | |
35b384bd | 952 | __team_options_change_check(team); |
3d249d4c JP |
953 | |
954 | netdev_info(dev, "Port device %s added\n", portname); | |
955 | ||
956 | return 0; | |
957 | ||
80f7c668 JP |
958 | err_option_port_add: |
959 | netdev_rx_handler_unregister(port_dev); | |
960 | ||
3d249d4c JP |
961 | err_handler_register: |
962 | netdev_set_master(port_dev, NULL); | |
963 | ||
964 | err_set_master: | |
bd2d0837 JP |
965 | team_port_disable_netpoll(port); |
966 | ||
967 | err_enable_netpoll: | |
57459185 JP |
968 | vlan_vids_del_by_dev(port_dev, dev); |
969 | ||
970 | err_vids_add: | |
3d249d4c JP |
971 | dev_close(port_dev); |
972 | ||
973 | err_dev_open: | |
974 | team_port_leave(team, port); | |
975 | team_port_set_orig_mac(port); | |
976 | ||
977 | err_port_enter: | |
978 | dev_set_mtu(port_dev, port->orig.mtu); | |
979 | ||
980 | err_set_mtu: | |
981 | kfree(port); | |
982 | ||
983 | return err; | |
984 | } | |
985 | ||
986 | static int team_port_del(struct team *team, struct net_device *port_dev) | |
987 | { | |
988 | struct net_device *dev = team->dev; | |
989 | struct team_port *port; | |
990 | char *portname = port_dev->name; | |
991 | ||
992 | port = team_port_get_rtnl(port_dev); | |
993 | if (!port || !team_port_find(team, port)) { | |
994 | netdev_err(dev, "Device %s does not act as a port of this team\n", | |
995 | portname); | |
996 | return -ENOENT; | |
997 | } | |
998 | ||
35b384bd JP |
999 | __team_option_inst_mark_removed_port(team, port); |
1000 | __team_options_change_check(team); | |
1001 | __team_option_inst_del_port(team, port); | |
b82b9183 | 1002 | port->removed = true; |
3d249d4c | 1003 | __team_port_change_check(port, false); |
19a0b58e JP |
1004 | team_port_disable(team, port); |
1005 | list_del_rcu(&port->list); | |
3d249d4c JP |
1006 | netdev_rx_handler_unregister(port_dev); |
1007 | netdev_set_master(port_dev, NULL); | |
bd2d0837 | 1008 | team_port_disable_netpoll(port); |
57459185 | 1009 | vlan_vids_del_by_dev(port_dev, dev); |
3d249d4c JP |
1010 | dev_close(port_dev); |
1011 | team_port_leave(team, port); | |
1012 | team_port_set_orig_mac(port); | |
1013 | dev_set_mtu(port_dev, port->orig.mtu); | |
1014 | synchronize_rcu(); | |
1015 | kfree(port); | |
1016 | netdev_info(dev, "Port device %s removed\n", portname); | |
1017 | __team_compute_features(team); | |
1018 | ||
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | ||
1023 | /***************** | |
1024 | * Net device ops | |
1025 | *****************/ | |
1026 | ||
80f7c668 | 1027 | static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 1028 | { |
d299cd51 | 1029 | ctx->data.str_val = team->mode->kind; |
3d249d4c JP |
1030 | return 0; |
1031 | } | |
1032 | ||
80f7c668 | 1033 | static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 1034 | { |
80f7c668 | 1035 | return team_change_mode(team, ctx->data.str_val); |
3d249d4c JP |
1036 | } |
1037 | ||
acd69962 JP |
1038 | static int team_port_en_option_get(struct team *team, |
1039 | struct team_gsetter_ctx *ctx) | |
1040 | { | |
85d59a87 JP |
1041 | struct team_port *port = ctx->info->port; |
1042 | ||
1043 | ctx->data.bool_val = team_port_enabled(port); | |
acd69962 JP |
1044 | return 0; |
1045 | } | |
1046 | ||
1047 | static int team_port_en_option_set(struct team *team, | |
1048 | struct team_gsetter_ctx *ctx) | |
1049 | { | |
85d59a87 JP |
1050 | struct team_port *port = ctx->info->port; |
1051 | ||
acd69962 | 1052 | if (ctx->data.bool_val) |
85d59a87 | 1053 | team_port_enable(team, port); |
acd69962 | 1054 | else |
85d59a87 | 1055 | team_port_disable(team, port); |
acd69962 JP |
1056 | return 0; |
1057 | } | |
1058 | ||
71472ec1 JP |
1059 | static int team_user_linkup_option_get(struct team *team, |
1060 | struct team_gsetter_ctx *ctx) | |
1061 | { | |
85d59a87 JP |
1062 | struct team_port *port = ctx->info->port; |
1063 | ||
1064 | ctx->data.bool_val = port->user.linkup; | |
71472ec1 JP |
1065 | return 0; |
1066 | } | |
1067 | ||
1068 | static int team_user_linkup_option_set(struct team *team, | |
1069 | struct team_gsetter_ctx *ctx) | |
1070 | { | |
85d59a87 JP |
1071 | struct team_port *port = ctx->info->port; |
1072 | ||
1073 | port->user.linkup = ctx->data.bool_val; | |
1074 | team_refresh_port_linkup(port); | |
71472ec1 JP |
1075 | return 0; |
1076 | } | |
1077 | ||
1078 | static int team_user_linkup_en_option_get(struct team *team, | |
1079 | struct team_gsetter_ctx *ctx) | |
1080 | { | |
85d59a87 | 1081 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1082 | |
1083 | ctx->data.bool_val = port->user.linkup_enabled; | |
1084 | return 0; | |
1085 | } | |
1086 | ||
1087 | static int team_user_linkup_en_option_set(struct team *team, | |
1088 | struct team_gsetter_ctx *ctx) | |
1089 | { | |
85d59a87 | 1090 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1091 | |
1092 | port->user.linkup_enabled = ctx->data.bool_val; | |
85d59a87 | 1093 | team_refresh_port_linkup(port); |
71472ec1 JP |
1094 | return 0; |
1095 | } | |
1096 | ||
358b8382 | 1097 | static const struct team_option team_options[] = { |
3d249d4c JP |
1098 | { |
1099 | .name = "mode", | |
1100 | .type = TEAM_OPTION_TYPE_STRING, | |
1101 | .getter = team_mode_option_get, | |
1102 | .setter = team_mode_option_set, | |
1103 | }, | |
acd69962 JP |
1104 | { |
1105 | .name = "enabled", | |
1106 | .type = TEAM_OPTION_TYPE_BOOL, | |
1107 | .per_port = true, | |
1108 | .getter = team_port_en_option_get, | |
1109 | .setter = team_port_en_option_set, | |
1110 | }, | |
71472ec1 JP |
1111 | { |
1112 | .name = "user_linkup", | |
1113 | .type = TEAM_OPTION_TYPE_BOOL, | |
1114 | .per_port = true, | |
1115 | .getter = team_user_linkup_option_get, | |
1116 | .setter = team_user_linkup_option_set, | |
1117 | }, | |
1118 | { | |
1119 | .name = "user_linkup_enabled", | |
1120 | .type = TEAM_OPTION_TYPE_BOOL, | |
1121 | .per_port = true, | |
1122 | .getter = team_user_linkup_en_option_get, | |
1123 | .setter = team_user_linkup_en_option_set, | |
1124 | }, | |
3d249d4c JP |
1125 | }; |
1126 | ||
6c85f2bd JP |
1127 | static struct lock_class_key team_netdev_xmit_lock_key; |
1128 | static struct lock_class_key team_netdev_addr_lock_key; | |
1129 | ||
1130 | static void team_set_lockdep_class_one(struct net_device *dev, | |
1131 | struct netdev_queue *txq, | |
1132 | void *unused) | |
1133 | { | |
1134 | lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key); | |
1135 | } | |
1136 | ||
1137 | static void team_set_lockdep_class(struct net_device *dev) | |
1138 | { | |
1139 | lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key); | |
1140 | netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL); | |
1141 | } | |
1142 | ||
3d249d4c JP |
1143 | static int team_init(struct net_device *dev) |
1144 | { | |
1145 | struct team *team = netdev_priv(dev); | |
1146 | int i; | |
358b8382 | 1147 | int err; |
3d249d4c JP |
1148 | |
1149 | team->dev = dev; | |
61dc3461 | 1150 | mutex_init(&team->lock); |
d299cd51 | 1151 | team_set_no_mode(team); |
3d249d4c JP |
1152 | |
1153 | team->pcpu_stats = alloc_percpu(struct team_pcpu_stats); | |
1154 | if (!team->pcpu_stats) | |
1155 | return -ENOMEM; | |
1156 | ||
1157 | for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) | |
19a0b58e | 1158 | INIT_HLIST_HEAD(&team->en_port_hlist[i]); |
3d249d4c JP |
1159 | INIT_LIST_HEAD(&team->port_list); |
1160 | ||
1161 | team_adjust_ops(team); | |
1162 | ||
1163 | INIT_LIST_HEAD(&team->option_list); | |
80f7c668 | 1164 | INIT_LIST_HEAD(&team->option_inst_list); |
358b8382 JP |
1165 | err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); |
1166 | if (err) | |
1167 | goto err_options_register; | |
3d249d4c JP |
1168 | netif_carrier_off(dev); |
1169 | ||
6c85f2bd JP |
1170 | team_set_lockdep_class(dev); |
1171 | ||
3d249d4c | 1172 | return 0; |
358b8382 JP |
1173 | |
1174 | err_options_register: | |
1175 | free_percpu(team->pcpu_stats); | |
1176 | ||
1177 | return err; | |
3d249d4c JP |
1178 | } |
1179 | ||
1180 | static void team_uninit(struct net_device *dev) | |
1181 | { | |
1182 | struct team *team = netdev_priv(dev); | |
1183 | struct team_port *port; | |
1184 | struct team_port *tmp; | |
1185 | ||
61dc3461 | 1186 | mutex_lock(&team->lock); |
3d249d4c JP |
1187 | list_for_each_entry_safe(port, tmp, &team->port_list, list) |
1188 | team_port_del(team, port->dev); | |
1189 | ||
1190 | __team_change_mode(team, NULL); /* cleanup */ | |
1191 | __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); | |
61dc3461 | 1192 | mutex_unlock(&team->lock); |
3d249d4c JP |
1193 | } |
1194 | ||
1195 | static void team_destructor(struct net_device *dev) | |
1196 | { | |
1197 | struct team *team = netdev_priv(dev); | |
1198 | ||
1199 | free_percpu(team->pcpu_stats); | |
1200 | free_netdev(dev); | |
1201 | } | |
1202 | ||
1203 | static int team_open(struct net_device *dev) | |
1204 | { | |
1205 | netif_carrier_on(dev); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | static int team_close(struct net_device *dev) | |
1210 | { | |
1211 | netif_carrier_off(dev); | |
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | /* | |
1216 | * note: already called with rcu_read_lock | |
1217 | */ | |
1218 | static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) | |
1219 | { | |
1220 | struct team *team = netdev_priv(dev); | |
1221 | bool tx_success = false; | |
1222 | unsigned int len = skb->len; | |
1223 | ||
1224 | tx_success = team->ops.transmit(team, skb); | |
1225 | if (tx_success) { | |
1226 | struct team_pcpu_stats *pcpu_stats; | |
1227 | ||
1228 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
1229 | u64_stats_update_begin(&pcpu_stats->syncp); | |
1230 | pcpu_stats->tx_packets++; | |
1231 | pcpu_stats->tx_bytes += len; | |
1232 | u64_stats_update_end(&pcpu_stats->syncp); | |
1233 | } else { | |
1234 | this_cpu_inc(team->pcpu_stats->tx_dropped); | |
1235 | } | |
1236 | ||
1237 | return NETDEV_TX_OK; | |
1238 | } | |
1239 | ||
6c85f2bd JP |
1240 | static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb) |
1241 | { | |
1242 | /* | |
1243 | * This helper function exists to help dev_pick_tx get the correct | |
1244 | * destination queue. Using a helper function skips a call to | |
1245 | * skb_tx_hash and will put the skbs in the queue we expect on their | |
1246 | * way down to the team driver. | |
1247 | */ | |
1248 | u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; | |
1249 | ||
1250 | /* | |
1251 | * Save the original txq to restore before passing to the driver | |
1252 | */ | |
1253 | qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; | |
1254 | ||
1255 | if (unlikely(txq >= dev->real_num_tx_queues)) { | |
1256 | do { | |
1257 | txq -= dev->real_num_tx_queues; | |
1258 | } while (txq >= dev->real_num_tx_queues); | |
1259 | } | |
1260 | return txq; | |
1261 | } | |
1262 | ||
3d249d4c JP |
1263 | static void team_change_rx_flags(struct net_device *dev, int change) |
1264 | { | |
1265 | struct team *team = netdev_priv(dev); | |
1266 | struct team_port *port; | |
1267 | int inc; | |
1268 | ||
1269 | rcu_read_lock(); | |
1270 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1271 | if (change & IFF_PROMISC) { | |
1272 | inc = dev->flags & IFF_PROMISC ? 1 : -1; | |
1273 | dev_set_promiscuity(port->dev, inc); | |
1274 | } | |
1275 | if (change & IFF_ALLMULTI) { | |
1276 | inc = dev->flags & IFF_ALLMULTI ? 1 : -1; | |
1277 | dev_set_allmulti(port->dev, inc); | |
1278 | } | |
1279 | } | |
1280 | rcu_read_unlock(); | |
1281 | } | |
1282 | ||
1283 | static void team_set_rx_mode(struct net_device *dev) | |
1284 | { | |
1285 | struct team *team = netdev_priv(dev); | |
1286 | struct team_port *port; | |
1287 | ||
1288 | rcu_read_lock(); | |
1289 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1290 | dev_uc_sync(port->dev, dev); | |
1291 | dev_mc_sync(port->dev, dev); | |
1292 | } | |
1293 | rcu_read_unlock(); | |
1294 | } | |
1295 | ||
1296 | static int team_set_mac_address(struct net_device *dev, void *p) | |
1297 | { | |
1298 | struct team *team = netdev_priv(dev); | |
1299 | struct team_port *port; | |
5a1d1c8c | 1300 | int err; |
3d249d4c | 1301 | |
5a1d1c8c JP |
1302 | err = eth_mac_addr(dev, p); |
1303 | if (err) | |
1304 | return err; | |
3d249d4c JP |
1305 | rcu_read_lock(); |
1306 | list_for_each_entry_rcu(port, &team->port_list, list) | |
1307 | if (team->ops.port_change_mac) | |
1308 | team->ops.port_change_mac(team, port); | |
1309 | rcu_read_unlock(); | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | static int team_change_mtu(struct net_device *dev, int new_mtu) | |
1314 | { | |
1315 | struct team *team = netdev_priv(dev); | |
1316 | struct team_port *port; | |
1317 | int err; | |
1318 | ||
1319 | /* | |
1320 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1321 | * to traverse list in reverse under rcu_read_lock | |
1322 | */ | |
61dc3461 | 1323 | mutex_lock(&team->lock); |
3d249d4c JP |
1324 | list_for_each_entry(port, &team->port_list, list) { |
1325 | err = dev_set_mtu(port->dev, new_mtu); | |
1326 | if (err) { | |
1327 | netdev_err(dev, "Device %s failed to change mtu", | |
1328 | port->dev->name); | |
1329 | goto unwind; | |
1330 | } | |
1331 | } | |
61dc3461 | 1332 | mutex_unlock(&team->lock); |
3d249d4c JP |
1333 | |
1334 | dev->mtu = new_mtu; | |
1335 | ||
1336 | return 0; | |
1337 | ||
1338 | unwind: | |
1339 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1340 | dev_set_mtu(port->dev, dev->mtu); | |
61dc3461 | 1341 | mutex_unlock(&team->lock); |
3d249d4c JP |
1342 | |
1343 | return err; | |
1344 | } | |
1345 | ||
1346 | static struct rtnl_link_stats64 * | |
1347 | team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
1348 | { | |
1349 | struct team *team = netdev_priv(dev); | |
1350 | struct team_pcpu_stats *p; | |
1351 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; | |
1352 | u32 rx_dropped = 0, tx_dropped = 0; | |
1353 | unsigned int start; | |
1354 | int i; | |
1355 | ||
1356 | for_each_possible_cpu(i) { | |
1357 | p = per_cpu_ptr(team->pcpu_stats, i); | |
1358 | do { | |
1359 | start = u64_stats_fetch_begin_bh(&p->syncp); | |
1360 | rx_packets = p->rx_packets; | |
1361 | rx_bytes = p->rx_bytes; | |
1362 | rx_multicast = p->rx_multicast; | |
1363 | tx_packets = p->tx_packets; | |
1364 | tx_bytes = p->tx_bytes; | |
1365 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); | |
1366 | ||
1367 | stats->rx_packets += rx_packets; | |
1368 | stats->rx_bytes += rx_bytes; | |
1369 | stats->multicast += rx_multicast; | |
1370 | stats->tx_packets += tx_packets; | |
1371 | stats->tx_bytes += tx_bytes; | |
1372 | /* | |
1373 | * rx_dropped & tx_dropped are u32, updated | |
1374 | * without syncp protection. | |
1375 | */ | |
1376 | rx_dropped += p->rx_dropped; | |
1377 | tx_dropped += p->tx_dropped; | |
1378 | } | |
1379 | stats->rx_dropped = rx_dropped; | |
1380 | stats->tx_dropped = tx_dropped; | |
1381 | return stats; | |
1382 | } | |
1383 | ||
8e586137 | 1384 | static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1385 | { |
1386 | struct team *team = netdev_priv(dev); | |
1387 | struct team_port *port; | |
87002b03 | 1388 | int err; |
3d249d4c | 1389 | |
87002b03 JP |
1390 | /* |
1391 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1392 | * to traverse list in reverse under rcu_read_lock | |
1393 | */ | |
1394 | mutex_lock(&team->lock); | |
1395 | list_for_each_entry(port, &team->port_list, list) { | |
1396 | err = vlan_vid_add(port->dev, vid); | |
1397 | if (err) | |
1398 | goto unwind; | |
3d249d4c | 1399 | } |
87002b03 | 1400 | mutex_unlock(&team->lock); |
8e586137 JP |
1401 | |
1402 | return 0; | |
87002b03 JP |
1403 | |
1404 | unwind: | |
1405 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1406 | vlan_vid_del(port->dev, vid); | |
1407 | mutex_unlock(&team->lock); | |
1408 | ||
1409 | return err; | |
3d249d4c JP |
1410 | } |
1411 | ||
8e586137 | 1412 | static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1413 | { |
1414 | struct team *team = netdev_priv(dev); | |
1415 | struct team_port *port; | |
1416 | ||
1417 | rcu_read_lock(); | |
87002b03 JP |
1418 | list_for_each_entry_rcu(port, &team->port_list, list) |
1419 | vlan_vid_del(port->dev, vid); | |
3d249d4c | 1420 | rcu_read_unlock(); |
8e586137 JP |
1421 | |
1422 | return 0; | |
3d249d4c JP |
1423 | } |
1424 | ||
bd2d0837 JP |
1425 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1426 | static void team_poll_controller(struct net_device *dev) | |
1427 | { | |
1428 | } | |
1429 | ||
1430 | static void __team_netpoll_cleanup(struct team *team) | |
1431 | { | |
1432 | struct team_port *port; | |
1433 | ||
1434 | list_for_each_entry(port, &team->port_list, list) | |
1435 | team_port_disable_netpoll(port); | |
1436 | } | |
1437 | ||
1438 | static void team_netpoll_cleanup(struct net_device *dev) | |
1439 | { | |
1440 | struct team *team = netdev_priv(dev); | |
1441 | ||
1442 | mutex_lock(&team->lock); | |
1443 | __team_netpoll_cleanup(team); | |
1444 | mutex_unlock(&team->lock); | |
1445 | } | |
1446 | ||
1447 | static int team_netpoll_setup(struct net_device *dev, | |
47be03a2 | 1448 | struct netpoll_info *npifo, gfp_t gfp) |
bd2d0837 JP |
1449 | { |
1450 | struct team *team = netdev_priv(dev); | |
1451 | struct team_port *port; | |
3324d024 | 1452 | int err = 0; |
bd2d0837 JP |
1453 | |
1454 | mutex_lock(&team->lock); | |
1455 | list_for_each_entry(port, &team->port_list, list) { | |
47be03a2 | 1456 | err = team_port_enable_netpoll(team, port, gfp); |
bd2d0837 JP |
1457 | if (err) { |
1458 | __team_netpoll_cleanup(team); | |
1459 | break; | |
1460 | } | |
1461 | } | |
1462 | mutex_unlock(&team->lock); | |
1463 | return err; | |
1464 | } | |
1465 | #endif | |
1466 | ||
3d249d4c JP |
1467 | static int team_add_slave(struct net_device *dev, struct net_device *port_dev) |
1468 | { | |
1469 | struct team *team = netdev_priv(dev); | |
1470 | int err; | |
1471 | ||
61dc3461 | 1472 | mutex_lock(&team->lock); |
3d249d4c | 1473 | err = team_port_add(team, port_dev); |
61dc3461 | 1474 | mutex_unlock(&team->lock); |
3d249d4c JP |
1475 | return err; |
1476 | } | |
1477 | ||
1478 | static int team_del_slave(struct net_device *dev, struct net_device *port_dev) | |
1479 | { | |
1480 | struct team *team = netdev_priv(dev); | |
1481 | int err; | |
1482 | ||
61dc3461 | 1483 | mutex_lock(&team->lock); |
3d249d4c | 1484 | err = team_port_del(team, port_dev); |
61dc3461 | 1485 | mutex_unlock(&team->lock); |
3d249d4c JP |
1486 | return err; |
1487 | } | |
1488 | ||
234a8fd4 JP |
1489 | static netdev_features_t team_fix_features(struct net_device *dev, |
1490 | netdev_features_t features) | |
1491 | { | |
1492 | struct team_port *port; | |
1493 | struct team *team = netdev_priv(dev); | |
1494 | netdev_features_t mask; | |
1495 | ||
1496 | mask = features; | |
1497 | features &= ~NETIF_F_ONE_FOR_ALL; | |
1498 | features |= NETIF_F_ALL_FOR_ALL; | |
1499 | ||
1500 | rcu_read_lock(); | |
1501 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1502 | features = netdev_increment_features(features, | |
1503 | port->dev->features, | |
1504 | mask); | |
1505 | } | |
1506 | rcu_read_unlock(); | |
1507 | return features; | |
1508 | } | |
1509 | ||
3d249d4c JP |
1510 | static const struct net_device_ops team_netdev_ops = { |
1511 | .ndo_init = team_init, | |
1512 | .ndo_uninit = team_uninit, | |
1513 | .ndo_open = team_open, | |
1514 | .ndo_stop = team_close, | |
1515 | .ndo_start_xmit = team_xmit, | |
6c85f2bd | 1516 | .ndo_select_queue = team_select_queue, |
3d249d4c JP |
1517 | .ndo_change_rx_flags = team_change_rx_flags, |
1518 | .ndo_set_rx_mode = team_set_rx_mode, | |
1519 | .ndo_set_mac_address = team_set_mac_address, | |
1520 | .ndo_change_mtu = team_change_mtu, | |
1521 | .ndo_get_stats64 = team_get_stats64, | |
1522 | .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, | |
1523 | .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, | |
bd2d0837 JP |
1524 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1525 | .ndo_poll_controller = team_poll_controller, | |
1526 | .ndo_netpoll_setup = team_netpoll_setup, | |
1527 | .ndo_netpoll_cleanup = team_netpoll_cleanup, | |
1528 | #endif | |
3d249d4c JP |
1529 | .ndo_add_slave = team_add_slave, |
1530 | .ndo_del_slave = team_del_slave, | |
234a8fd4 | 1531 | .ndo_fix_features = team_fix_features, |
3d249d4c JP |
1532 | }; |
1533 | ||
1534 | ||
1535 | /*********************** | |
1536 | * rt netlink interface | |
1537 | ***********************/ | |
1538 | ||
1539 | static void team_setup(struct net_device *dev) | |
1540 | { | |
1541 | ether_setup(dev); | |
1542 | ||
1543 | dev->netdev_ops = &team_netdev_ops; | |
1544 | dev->destructor = team_destructor; | |
1545 | dev->tx_queue_len = 0; | |
1546 | dev->flags |= IFF_MULTICAST; | |
1547 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); | |
1548 | ||
1549 | /* | |
1550 | * Indicate we support unicast address filtering. That way core won't | |
1551 | * bring us to promisc mode in case a unicast addr is added. | |
1552 | * Let this up to underlay drivers. | |
1553 | */ | |
5a1d1c8c | 1554 | dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE; |
3d249d4c JP |
1555 | |
1556 | dev->features |= NETIF_F_LLTX; | |
1557 | dev->features |= NETIF_F_GRO; | |
1558 | dev->hw_features = NETIF_F_HW_VLAN_TX | | |
1559 | NETIF_F_HW_VLAN_RX | | |
1560 | NETIF_F_HW_VLAN_FILTER; | |
1561 | ||
1562 | dev->features |= dev->hw_features; | |
1563 | } | |
1564 | ||
1565 | static int team_newlink(struct net *src_net, struct net_device *dev, | |
1566 | struct nlattr *tb[], struct nlattr *data[]) | |
1567 | { | |
1568 | int err; | |
1569 | ||
1570 | if (tb[IFLA_ADDRESS] == NULL) | |
7ce5d222 | 1571 | eth_hw_addr_random(dev); |
3d249d4c JP |
1572 | |
1573 | err = register_netdevice(dev); | |
1574 | if (err) | |
1575 | return err; | |
1576 | ||
1577 | return 0; | |
1578 | } | |
1579 | ||
1580 | static int team_validate(struct nlattr *tb[], struct nlattr *data[]) | |
1581 | { | |
1582 | if (tb[IFLA_ADDRESS]) { | |
1583 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
1584 | return -EINVAL; | |
1585 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
1586 | return -EADDRNOTAVAIL; | |
1587 | } | |
1588 | return 0; | |
1589 | } | |
1590 | ||
6c85f2bd JP |
1591 | static unsigned int team_get_num_tx_queues(void) |
1592 | { | |
1593 | return TEAM_DEFAULT_NUM_TX_QUEUES; | |
1594 | } | |
1595 | ||
1596 | static unsigned int team_get_num_rx_queues(void) | |
1597 | { | |
1598 | return TEAM_DEFAULT_NUM_RX_QUEUES; | |
1599 | } | |
1600 | ||
3d249d4c | 1601 | static struct rtnl_link_ops team_link_ops __read_mostly = { |
6c85f2bd JP |
1602 | .kind = DRV_NAME, |
1603 | .priv_size = sizeof(struct team), | |
1604 | .setup = team_setup, | |
1605 | .newlink = team_newlink, | |
1606 | .validate = team_validate, | |
1607 | .get_num_tx_queues = team_get_num_tx_queues, | |
1608 | .get_num_rx_queues = team_get_num_rx_queues, | |
3d249d4c JP |
1609 | }; |
1610 | ||
1611 | ||
1612 | /*********************************** | |
1613 | * Generic netlink custom interface | |
1614 | ***********************************/ | |
1615 | ||
1616 | static struct genl_family team_nl_family = { | |
1617 | .id = GENL_ID_GENERATE, | |
1618 | .name = TEAM_GENL_NAME, | |
1619 | .version = TEAM_GENL_VERSION, | |
1620 | .maxattr = TEAM_ATTR_MAX, | |
1621 | .netnsok = true, | |
1622 | }; | |
1623 | ||
1624 | static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { | |
1625 | [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1626 | [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, | |
1627 | [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, | |
1628 | [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, | |
1629 | }; | |
1630 | ||
1631 | static const struct nla_policy | |
1632 | team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { | |
1633 | [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1634 | [TEAM_ATTR_OPTION_NAME] = { | |
1635 | .type = NLA_STRING, | |
1636 | .len = TEAM_STRING_MAX_LEN, | |
1637 | }, | |
1638 | [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, | |
1639 | [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, | |
2615598f | 1640 | [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, |
3d249d4c JP |
1641 | }; |
1642 | ||
1643 | static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) | |
1644 | { | |
1645 | struct sk_buff *msg; | |
1646 | void *hdr; | |
1647 | int err; | |
1648 | ||
58050fce | 1649 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
3d249d4c JP |
1650 | if (!msg) |
1651 | return -ENOMEM; | |
1652 | ||
1653 | hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, | |
1654 | &team_nl_family, 0, TEAM_CMD_NOOP); | |
1655 | if (IS_ERR(hdr)) { | |
1656 | err = PTR_ERR(hdr); | |
1657 | goto err_msg_put; | |
1658 | } | |
1659 | ||
1660 | genlmsg_end(msg, hdr); | |
1661 | ||
1662 | return genlmsg_unicast(genl_info_net(info), msg, info->snd_pid); | |
1663 | ||
1664 | err_msg_put: | |
1665 | nlmsg_free(msg); | |
1666 | ||
1667 | return err; | |
1668 | } | |
1669 | ||
1670 | /* | |
1671 | * Netlink cmd functions should be locked by following two functions. | |
8c0713a5 | 1672 | * Since dev gets held here, that ensures dev won't disappear in between. |
3d249d4c JP |
1673 | */ |
1674 | static struct team *team_nl_team_get(struct genl_info *info) | |
1675 | { | |
1676 | struct net *net = genl_info_net(info); | |
1677 | int ifindex; | |
1678 | struct net_device *dev; | |
1679 | struct team *team; | |
1680 | ||
1681 | if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) | |
1682 | return NULL; | |
1683 | ||
1684 | ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); | |
8c0713a5 | 1685 | dev = dev_get_by_index(net, ifindex); |
3d249d4c | 1686 | if (!dev || dev->netdev_ops != &team_netdev_ops) { |
8c0713a5 JP |
1687 | if (dev) |
1688 | dev_put(dev); | |
3d249d4c JP |
1689 | return NULL; |
1690 | } | |
1691 | ||
1692 | team = netdev_priv(dev); | |
61dc3461 | 1693 | mutex_lock(&team->lock); |
3d249d4c JP |
1694 | return team; |
1695 | } | |
1696 | ||
1697 | static void team_nl_team_put(struct team *team) | |
1698 | { | |
61dc3461 | 1699 | mutex_unlock(&team->lock); |
8c0713a5 | 1700 | dev_put(team->dev); |
3d249d4c JP |
1701 | } |
1702 | ||
1703 | static int team_nl_send_generic(struct genl_info *info, struct team *team, | |
1704 | int (*fill_func)(struct sk_buff *skb, | |
1705 | struct genl_info *info, | |
1706 | int flags, struct team *team)) | |
1707 | { | |
1708 | struct sk_buff *skb; | |
1709 | int err; | |
1710 | ||
58050fce | 1711 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
3d249d4c JP |
1712 | if (!skb) |
1713 | return -ENOMEM; | |
1714 | ||
1715 | err = fill_func(skb, info, NLM_F_ACK, team); | |
1716 | if (err < 0) | |
1717 | goto err_fill; | |
1718 | ||
1719 | err = genlmsg_unicast(genl_info_net(info), skb, info->snd_pid); | |
1720 | return err; | |
1721 | ||
1722 | err_fill: | |
1723 | nlmsg_free(skb); | |
1724 | return err; | |
1725 | } | |
1726 | ||
9b00cf2d JP |
1727 | typedef int team_nl_send_func_t(struct sk_buff *skb, |
1728 | struct team *team, u32 pid); | |
1729 | ||
1730 | static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 pid) | |
1731 | { | |
1732 | return genlmsg_unicast(dev_net(team->dev), skb, pid); | |
1733 | } | |
1734 | ||
01048d9a JP |
1735 | static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team, |
1736 | struct team_option_inst *opt_inst) | |
1737 | { | |
1738 | struct nlattr *option_item; | |
1739 | struct team_option *option = opt_inst->option; | |
9b00cf2d | 1740 | struct team_option_inst_info *opt_inst_info = &opt_inst->info; |
01048d9a JP |
1741 | struct team_gsetter_ctx ctx; |
1742 | int err; | |
1743 | ||
9b00cf2d JP |
1744 | ctx.info = opt_inst_info; |
1745 | err = team_option_get(team, opt_inst, &ctx); | |
1746 | if (err) | |
1747 | return err; | |
1748 | ||
01048d9a JP |
1749 | option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION); |
1750 | if (!option_item) | |
9b00cf2d | 1751 | return -EMSGSIZE; |
01048d9a | 1752 | |
9b00cf2d JP |
1753 | if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) |
1754 | goto nest_cancel; | |
01048d9a JP |
1755 | if (opt_inst_info->port && |
1756 | nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, | |
1757 | opt_inst_info->port->dev->ifindex)) | |
9b00cf2d | 1758 | goto nest_cancel; |
01048d9a JP |
1759 | if (opt_inst->option->array_size && |
1760 | nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX, | |
1761 | opt_inst_info->array_index)) | |
9b00cf2d | 1762 | goto nest_cancel; |
01048d9a JP |
1763 | |
1764 | switch (option->type) { | |
1765 | case TEAM_OPTION_TYPE_U32: | |
1766 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) | |
9b00cf2d | 1767 | goto nest_cancel; |
01048d9a | 1768 | if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val)) |
9b00cf2d | 1769 | goto nest_cancel; |
01048d9a JP |
1770 | break; |
1771 | case TEAM_OPTION_TYPE_STRING: | |
1772 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) | |
9b00cf2d | 1773 | goto nest_cancel; |
01048d9a JP |
1774 | if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, |
1775 | ctx.data.str_val)) | |
9b00cf2d | 1776 | goto nest_cancel; |
01048d9a JP |
1777 | break; |
1778 | case TEAM_OPTION_TYPE_BINARY: | |
1779 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) | |
9b00cf2d | 1780 | goto nest_cancel; |
01048d9a JP |
1781 | if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len, |
1782 | ctx.data.bin_val.ptr)) | |
9b00cf2d | 1783 | goto nest_cancel; |
01048d9a JP |
1784 | break; |
1785 | case TEAM_OPTION_TYPE_BOOL: | |
1786 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) | |
9b00cf2d | 1787 | goto nest_cancel; |
01048d9a JP |
1788 | if (ctx.data.bool_val && |
1789 | nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) | |
9b00cf2d | 1790 | goto nest_cancel; |
01048d9a JP |
1791 | break; |
1792 | default: | |
1793 | BUG(); | |
1794 | } | |
9b00cf2d JP |
1795 | if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) |
1796 | goto nest_cancel; | |
1797 | if (opt_inst->changed) { | |
1798 | if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) | |
1799 | goto nest_cancel; | |
1800 | opt_inst->changed = false; | |
1801 | } | |
01048d9a JP |
1802 | nla_nest_end(skb, option_item); |
1803 | return 0; | |
1804 | ||
9b00cf2d JP |
1805 | nest_cancel: |
1806 | nla_nest_cancel(skb, option_item); | |
1807 | return -EMSGSIZE; | |
1808 | } | |
1809 | ||
1810 | static int __send_and_alloc_skb(struct sk_buff **pskb, | |
1811 | struct team *team, u32 pid, | |
1812 | team_nl_send_func_t *send_func) | |
1813 | { | |
1814 | int err; | |
1815 | ||
1816 | if (*pskb) { | |
1817 | err = send_func(*pskb, team, pid); | |
1818 | if (err) | |
1819 | return err; | |
1820 | } | |
58050fce | 1821 | *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); |
9b00cf2d JP |
1822 | if (!*pskb) |
1823 | return -ENOMEM; | |
1824 | return 0; | |
01048d9a JP |
1825 | } |
1826 | ||
9b00cf2d JP |
1827 | static int team_nl_send_options_get(struct team *team, u32 pid, u32 seq, |
1828 | int flags, team_nl_send_func_t *send_func, | |
01048d9a | 1829 | struct list_head *sel_opt_inst_list) |
3d249d4c JP |
1830 | { |
1831 | struct nlattr *option_list; | |
9b00cf2d | 1832 | struct nlmsghdr *nlh; |
3d249d4c | 1833 | void *hdr; |
80f7c668 JP |
1834 | struct team_option_inst *opt_inst; |
1835 | int err; | |
9b00cf2d JP |
1836 | struct sk_buff *skb = NULL; |
1837 | bool incomplete; | |
1838 | int i; | |
3d249d4c | 1839 | |
9b00cf2d JP |
1840 | opt_inst = list_first_entry(sel_opt_inst_list, |
1841 | struct team_option_inst, tmp_list); | |
1842 | ||
1843 | start_again: | |
1844 | err = __send_and_alloc_skb(&skb, team, pid, send_func); | |
1845 | if (err) | |
1846 | return err; | |
1847 | ||
1848 | hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags | NLM_F_MULTI, | |
3d249d4c JP |
1849 | TEAM_CMD_OPTIONS_GET); |
1850 | if (IS_ERR(hdr)) | |
1851 | return PTR_ERR(hdr); | |
1852 | ||
86ebb02d DM |
1853 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
1854 | goto nla_put_failure; | |
3d249d4c JP |
1855 | option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION); |
1856 | if (!option_list) | |
75db986a | 1857 | goto nla_put_failure; |
3d249d4c | 1858 | |
9b00cf2d JP |
1859 | i = 0; |
1860 | incomplete = false; | |
1861 | list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { | |
01048d9a | 1862 | err = team_nl_fill_one_option_get(skb, team, opt_inst); |
9b00cf2d JP |
1863 | if (err) { |
1864 | if (err == -EMSGSIZE) { | |
1865 | if (!i) | |
1866 | goto errout; | |
1867 | incomplete = true; | |
1868 | break; | |
1869 | } | |
01048d9a | 1870 | goto errout; |
9b00cf2d JP |
1871 | } |
1872 | i++; | |
3d249d4c JP |
1873 | } |
1874 | ||
1875 | nla_nest_end(skb, option_list); | |
9b00cf2d JP |
1876 | genlmsg_end(skb, hdr); |
1877 | if (incomplete) | |
1878 | goto start_again; | |
1879 | ||
1880 | send_done: | |
1881 | nlh = nlmsg_put(skb, pid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
1882 | if (!nlh) { | |
1883 | err = __send_and_alloc_skb(&skb, team, pid, send_func); | |
1884 | if (err) | |
1885 | goto errout; | |
1886 | goto send_done; | |
1887 | } | |
1888 | ||
1889 | return send_func(skb, team, pid); | |
3d249d4c JP |
1890 | |
1891 | nla_put_failure: | |
80f7c668 JP |
1892 | err = -EMSGSIZE; |
1893 | errout: | |
3d249d4c | 1894 | genlmsg_cancel(skb, hdr); |
9b00cf2d | 1895 | nlmsg_free(skb); |
80f7c668 | 1896 | return err; |
3d249d4c JP |
1897 | } |
1898 | ||
3d249d4c JP |
1899 | static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) |
1900 | { | |
1901 | struct team *team; | |
9b00cf2d | 1902 | struct team_option_inst *opt_inst; |
3d249d4c | 1903 | int err; |
9b00cf2d | 1904 | LIST_HEAD(sel_opt_inst_list); |
3d249d4c JP |
1905 | |
1906 | team = team_nl_team_get(info); | |
1907 | if (!team) | |
1908 | return -EINVAL; | |
1909 | ||
9b00cf2d JP |
1910 | list_for_each_entry(opt_inst, &team->option_inst_list, list) |
1911 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
1912 | err = team_nl_send_options_get(team, info->snd_pid, info->snd_seq, | |
1913 | NLM_F_ACK, team_nl_send_unicast, | |
1914 | &sel_opt_inst_list); | |
3d249d4c JP |
1915 | |
1916 | team_nl_team_put(team); | |
1917 | ||
1918 | return err; | |
1919 | } | |
1920 | ||
2fcdb2c9 JP |
1921 | static int team_nl_send_event_options_get(struct team *team, |
1922 | struct list_head *sel_opt_inst_list); | |
1923 | ||
3d249d4c JP |
1924 | static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) |
1925 | { | |
1926 | struct team *team; | |
1927 | int err = 0; | |
1928 | int i; | |
1929 | struct nlattr *nl_option; | |
2fcdb2c9 | 1930 | LIST_HEAD(opt_inst_list); |
3d249d4c JP |
1931 | |
1932 | team = team_nl_team_get(info); | |
1933 | if (!team) | |
1934 | return -EINVAL; | |
1935 | ||
1936 | err = -EINVAL; | |
1937 | if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { | |
1938 | err = -EINVAL; | |
1939 | goto team_put; | |
1940 | } | |
1941 | ||
1942 | nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { | |
80f7c668 | 1943 | struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; |
b1303326 | 1944 | struct nlattr *attr; |
14f066ba | 1945 | struct nlattr *attr_data; |
3d249d4c | 1946 | enum team_option_type opt_type; |
80f7c668 | 1947 | int opt_port_ifindex = 0; /* != 0 for per-port options */ |
b1303326 JP |
1948 | u32 opt_array_index = 0; |
1949 | bool opt_is_array = false; | |
80f7c668 | 1950 | struct team_option_inst *opt_inst; |
3d249d4c JP |
1951 | char *opt_name; |
1952 | bool opt_found = false; | |
1953 | ||
1954 | if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { | |
1955 | err = -EINVAL; | |
1956 | goto team_put; | |
1957 | } | |
80f7c668 | 1958 | err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX, |
3d249d4c JP |
1959 | nl_option, team_nl_option_policy); |
1960 | if (err) | |
1961 | goto team_put; | |
80f7c668 | 1962 | if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || |
14f066ba | 1963 | !opt_attrs[TEAM_ATTR_OPTION_TYPE]) { |
3d249d4c JP |
1964 | err = -EINVAL; |
1965 | goto team_put; | |
1966 | } | |
80f7c668 | 1967 | switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { |
3d249d4c JP |
1968 | case NLA_U32: |
1969 | opt_type = TEAM_OPTION_TYPE_U32; | |
1970 | break; | |
1971 | case NLA_STRING: | |
1972 | opt_type = TEAM_OPTION_TYPE_STRING; | |
1973 | break; | |
2615598f JP |
1974 | case NLA_BINARY: |
1975 | opt_type = TEAM_OPTION_TYPE_BINARY; | |
1976 | break; | |
14f066ba JP |
1977 | case NLA_FLAG: |
1978 | opt_type = TEAM_OPTION_TYPE_BOOL; | |
1979 | break; | |
3d249d4c JP |
1980 | default: |
1981 | goto team_put; | |
1982 | } | |
1983 | ||
14f066ba JP |
1984 | attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; |
1985 | if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { | |
1986 | err = -EINVAL; | |
1987 | goto team_put; | |
1988 | } | |
1989 | ||
80f7c668 | 1990 | opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); |
b1303326 JP |
1991 | attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; |
1992 | if (attr) | |
1993 | opt_port_ifindex = nla_get_u32(attr); | |
1994 | ||
1995 | attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX]; | |
1996 | if (attr) { | |
1997 | opt_is_array = true; | |
1998 | opt_array_index = nla_get_u32(attr); | |
1999 | } | |
80f7c668 JP |
2000 | |
2001 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
2002 | struct team_option *option = opt_inst->option; | |
80f7c668 | 2003 | struct team_gsetter_ctx ctx; |
85d59a87 | 2004 | struct team_option_inst_info *opt_inst_info; |
80f7c668 | 2005 | int tmp_ifindex; |
3d249d4c | 2006 | |
85d59a87 JP |
2007 | opt_inst_info = &opt_inst->info; |
2008 | tmp_ifindex = opt_inst_info->port ? | |
2009 | opt_inst_info->port->dev->ifindex : 0; | |
3d249d4c | 2010 | if (option->type != opt_type || |
80f7c668 | 2011 | strcmp(option->name, opt_name) || |
b1303326 JP |
2012 | tmp_ifindex != opt_port_ifindex || |
2013 | (option->array_size && !opt_is_array) || | |
85d59a87 | 2014 | opt_inst_info->array_index != opt_array_index) |
3d249d4c JP |
2015 | continue; |
2016 | opt_found = true; | |
85d59a87 | 2017 | ctx.info = opt_inst_info; |
3d249d4c JP |
2018 | switch (opt_type) { |
2019 | case TEAM_OPTION_TYPE_U32: | |
14f066ba | 2020 | ctx.data.u32_val = nla_get_u32(attr_data); |
3d249d4c JP |
2021 | break; |
2022 | case TEAM_OPTION_TYPE_STRING: | |
14f066ba | 2023 | if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { |
2615598f JP |
2024 | err = -EINVAL; |
2025 | goto team_put; | |
2026 | } | |
14f066ba | 2027 | ctx.data.str_val = nla_data(attr_data); |
3d249d4c | 2028 | break; |
2615598f | 2029 | case TEAM_OPTION_TYPE_BINARY: |
14f066ba JP |
2030 | ctx.data.bin_val.len = nla_len(attr_data); |
2031 | ctx.data.bin_val.ptr = nla_data(attr_data); | |
2032 | break; | |
2033 | case TEAM_OPTION_TYPE_BOOL: | |
2034 | ctx.data.bool_val = attr_data ? true : false; | |
2615598f | 2035 | break; |
3d249d4c JP |
2036 | default: |
2037 | BUG(); | |
2038 | } | |
80f7c668 | 2039 | err = team_option_set(team, opt_inst, &ctx); |
3d249d4c JP |
2040 | if (err) |
2041 | goto team_put; | |
2fcdb2c9 JP |
2042 | opt_inst->changed = true; |
2043 | list_add(&opt_inst->tmp_list, &opt_inst_list); | |
3d249d4c JP |
2044 | } |
2045 | if (!opt_found) { | |
2046 | err = -ENOENT; | |
2047 | goto team_put; | |
2048 | } | |
2049 | } | |
2050 | ||
2fcdb2c9 JP |
2051 | err = team_nl_send_event_options_get(team, &opt_inst_list); |
2052 | ||
3d249d4c JP |
2053 | team_put: |
2054 | team_nl_team_put(team); | |
2055 | ||
2056 | return err; | |
2057 | } | |
2058 | ||
b82b9183 JP |
2059 | static int team_nl_fill_port_list_get(struct sk_buff *skb, |
2060 | u32 pid, u32 seq, int flags, | |
2061 | struct team *team, | |
2062 | bool fillall) | |
3d249d4c JP |
2063 | { |
2064 | struct nlattr *port_list; | |
2065 | void *hdr; | |
2066 | struct team_port *port; | |
2067 | ||
2068 | hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, | |
2069 | TEAM_CMD_PORT_LIST_GET); | |
2070 | if (IS_ERR(hdr)) | |
2071 | return PTR_ERR(hdr); | |
2072 | ||
86ebb02d DM |
2073 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
2074 | goto nla_put_failure; | |
3d249d4c JP |
2075 | port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT); |
2076 | if (!port_list) | |
3221c646 | 2077 | goto nla_put_failure; |
3d249d4c JP |
2078 | |
2079 | list_for_each_entry(port, &team->port_list, list) { | |
2080 | struct nlattr *port_item; | |
2081 | ||
b82b9183 JP |
2082 | /* Include only changed ports if fill all mode is not on */ |
2083 | if (!fillall && !port->changed) | |
2084 | continue; | |
3d249d4c JP |
2085 | port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); |
2086 | if (!port_item) | |
2087 | goto nla_put_failure; | |
86ebb02d DM |
2088 | if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) |
2089 | goto nla_put_failure; | |
b82b9183 | 2090 | if (port->changed) { |
86ebb02d DM |
2091 | if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) |
2092 | goto nla_put_failure; | |
b82b9183 JP |
2093 | port->changed = false; |
2094 | } | |
86ebb02d DM |
2095 | if ((port->removed && |
2096 | nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || | |
71472ec1 | 2097 | (port->state.linkup && |
86ebb02d | 2098 | nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || |
71472ec1 JP |
2099 | nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || |
2100 | nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) | |
86ebb02d | 2101 | goto nla_put_failure; |
3d249d4c JP |
2102 | nla_nest_end(skb, port_item); |
2103 | } | |
2104 | ||
2105 | nla_nest_end(skb, port_list); | |
2106 | return genlmsg_end(skb, hdr); | |
2107 | ||
2108 | nla_put_failure: | |
2109 | genlmsg_cancel(skb, hdr); | |
2110 | return -EMSGSIZE; | |
2111 | } | |
2112 | ||
b82b9183 JP |
2113 | static int team_nl_fill_port_list_get_all(struct sk_buff *skb, |
2114 | struct genl_info *info, int flags, | |
2115 | struct team *team) | |
3d249d4c | 2116 | { |
b82b9183 JP |
2117 | return team_nl_fill_port_list_get(skb, info->snd_pid, |
2118 | info->snd_seq, NLM_F_ACK, | |
2119 | team, true); | |
3d249d4c JP |
2120 | } |
2121 | ||
2122 | static int team_nl_cmd_port_list_get(struct sk_buff *skb, | |
2123 | struct genl_info *info) | |
2124 | { | |
2125 | struct team *team; | |
2126 | int err; | |
2127 | ||
2128 | team = team_nl_team_get(info); | |
2129 | if (!team) | |
2130 | return -EINVAL; | |
2131 | ||
b82b9183 | 2132 | err = team_nl_send_generic(info, team, team_nl_fill_port_list_get_all); |
3d249d4c JP |
2133 | |
2134 | team_nl_team_put(team); | |
2135 | ||
2136 | return err; | |
2137 | } | |
2138 | ||
2139 | static struct genl_ops team_nl_ops[] = { | |
2140 | { | |
2141 | .cmd = TEAM_CMD_NOOP, | |
2142 | .doit = team_nl_cmd_noop, | |
2143 | .policy = team_nl_policy, | |
2144 | }, | |
2145 | { | |
2146 | .cmd = TEAM_CMD_OPTIONS_SET, | |
2147 | .doit = team_nl_cmd_options_set, | |
2148 | .policy = team_nl_policy, | |
2149 | .flags = GENL_ADMIN_PERM, | |
2150 | }, | |
2151 | { | |
2152 | .cmd = TEAM_CMD_OPTIONS_GET, | |
2153 | .doit = team_nl_cmd_options_get, | |
2154 | .policy = team_nl_policy, | |
2155 | .flags = GENL_ADMIN_PERM, | |
2156 | }, | |
2157 | { | |
2158 | .cmd = TEAM_CMD_PORT_LIST_GET, | |
2159 | .doit = team_nl_cmd_port_list_get, | |
2160 | .policy = team_nl_policy, | |
2161 | .flags = GENL_ADMIN_PERM, | |
2162 | }, | |
2163 | }; | |
2164 | ||
2165 | static struct genl_multicast_group team_change_event_mcgrp = { | |
2166 | .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, | |
2167 | }; | |
2168 | ||
9b00cf2d JP |
2169 | static int team_nl_send_multicast(struct sk_buff *skb, |
2170 | struct team *team, u32 pid) | |
2171 | { | |
2172 | return genlmsg_multicast_netns(dev_net(team->dev), skb, 0, | |
2173 | team_change_event_mcgrp.id, GFP_KERNEL); | |
2174 | } | |
2175 | ||
01048d9a JP |
2176 | static int team_nl_send_event_options_get(struct team *team, |
2177 | struct list_head *sel_opt_inst_list) | |
3d249d4c | 2178 | { |
9b00cf2d JP |
2179 | return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast, |
2180 | sel_opt_inst_list); | |
3d249d4c JP |
2181 | } |
2182 | ||
b82b9183 | 2183 | static int team_nl_send_event_port_list_get(struct team *team) |
3d249d4c JP |
2184 | { |
2185 | struct sk_buff *skb; | |
2186 | int err; | |
b82b9183 | 2187 | struct net *net = dev_net(team->dev); |
3d249d4c | 2188 | |
58050fce | 2189 | skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
3d249d4c JP |
2190 | if (!skb) |
2191 | return -ENOMEM; | |
2192 | ||
b82b9183 | 2193 | err = team_nl_fill_port_list_get(skb, 0, 0, 0, team, false); |
3d249d4c JP |
2194 | if (err < 0) |
2195 | goto err_fill; | |
2196 | ||
2197 | err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, | |
2198 | GFP_KERNEL); | |
2199 | return err; | |
2200 | ||
2201 | err_fill: | |
2202 | nlmsg_free(skb); | |
2203 | return err; | |
2204 | } | |
2205 | ||
2206 | static int team_nl_init(void) | |
2207 | { | |
2208 | int err; | |
2209 | ||
2210 | err = genl_register_family_with_ops(&team_nl_family, team_nl_ops, | |
2211 | ARRAY_SIZE(team_nl_ops)); | |
2212 | if (err) | |
2213 | return err; | |
2214 | ||
2215 | err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp); | |
2216 | if (err) | |
2217 | goto err_change_event_grp_reg; | |
2218 | ||
2219 | return 0; | |
2220 | ||
2221 | err_change_event_grp_reg: | |
2222 | genl_unregister_family(&team_nl_family); | |
2223 | ||
2224 | return err; | |
2225 | } | |
2226 | ||
2227 | static void team_nl_fini(void) | |
2228 | { | |
2229 | genl_unregister_family(&team_nl_family); | |
2230 | } | |
2231 | ||
2232 | ||
2233 | /****************** | |
2234 | * Change checkers | |
2235 | ******************/ | |
2236 | ||
b82b9183 | 2237 | static void __team_options_change_check(struct team *team) |
3d249d4c JP |
2238 | { |
2239 | int err; | |
01048d9a JP |
2240 | struct team_option_inst *opt_inst; |
2241 | LIST_HEAD(sel_opt_inst_list); | |
3d249d4c | 2242 | |
01048d9a JP |
2243 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
2244 | if (opt_inst->changed) | |
2245 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
2246 | } | |
2247 | err = team_nl_send_event_options_get(team, &sel_opt_inst_list); | |
3d249d4c | 2248 | if (err) |
9b00cf2d JP |
2249 | netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n", |
2250 | err); | |
3d249d4c JP |
2251 | } |
2252 | ||
2253 | /* rtnl lock is held */ | |
2254 | static void __team_port_change_check(struct team_port *port, bool linkup) | |
2255 | { | |
2256 | int err; | |
2257 | ||
71472ec1 | 2258 | if (!port->removed && port->state.linkup == linkup) |
3d249d4c JP |
2259 | return; |
2260 | ||
b82b9183 | 2261 | port->changed = true; |
71472ec1 JP |
2262 | port->state.linkup = linkup; |
2263 | team_refresh_port_linkup(port); | |
3d249d4c JP |
2264 | if (linkup) { |
2265 | struct ethtool_cmd ecmd; | |
2266 | ||
2267 | err = __ethtool_get_settings(port->dev, &ecmd); | |
2268 | if (!err) { | |
71472ec1 JP |
2269 | port->state.speed = ethtool_cmd_speed(&ecmd); |
2270 | port->state.duplex = ecmd.duplex; | |
3d249d4c JP |
2271 | goto send_event; |
2272 | } | |
2273 | } | |
71472ec1 JP |
2274 | port->state.speed = 0; |
2275 | port->state.duplex = 0; | |
3d249d4c JP |
2276 | |
2277 | send_event: | |
b82b9183 | 2278 | err = team_nl_send_event_port_list_get(port->team); |
3d249d4c JP |
2279 | if (err) |
2280 | netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n", | |
2281 | port->dev->name); | |
2282 | ||
2283 | } | |
2284 | ||
2285 | static void team_port_change_check(struct team_port *port, bool linkup) | |
2286 | { | |
2287 | struct team *team = port->team; | |
2288 | ||
61dc3461 | 2289 | mutex_lock(&team->lock); |
3d249d4c | 2290 | __team_port_change_check(port, linkup); |
61dc3461 | 2291 | mutex_unlock(&team->lock); |
3d249d4c JP |
2292 | } |
2293 | ||
0f1aad2b | 2294 | |
3d249d4c JP |
2295 | /************************************ |
2296 | * Net device notifier event handler | |
2297 | ************************************/ | |
2298 | ||
2299 | static int team_device_event(struct notifier_block *unused, | |
2300 | unsigned long event, void *ptr) | |
2301 | { | |
2302 | struct net_device *dev = (struct net_device *) ptr; | |
2303 | struct team_port *port; | |
2304 | ||
2305 | port = team_port_get_rtnl(dev); | |
2306 | if (!port) | |
2307 | return NOTIFY_DONE; | |
2308 | ||
2309 | switch (event) { | |
2310 | case NETDEV_UP: | |
2311 | if (netif_carrier_ok(dev)) | |
2312 | team_port_change_check(port, true); | |
2313 | case NETDEV_DOWN: | |
2314 | team_port_change_check(port, false); | |
2315 | case NETDEV_CHANGE: | |
2316 | if (netif_running(port->dev)) | |
2317 | team_port_change_check(port, | |
2318 | !!netif_carrier_ok(port->dev)); | |
2319 | break; | |
2320 | case NETDEV_UNREGISTER: | |
2321 | team_del_slave(port->team->dev, dev); | |
2322 | break; | |
2323 | case NETDEV_FEAT_CHANGE: | |
2324 | team_compute_features(port->team); | |
2325 | break; | |
2326 | case NETDEV_CHANGEMTU: | |
2327 | /* Forbid to change mtu of underlaying device */ | |
2328 | return NOTIFY_BAD; | |
2329 | case NETDEV_PRE_TYPE_CHANGE: | |
2330 | /* Forbid to change type of underlaying device */ | |
2331 | return NOTIFY_BAD; | |
2332 | } | |
2333 | return NOTIFY_DONE; | |
2334 | } | |
2335 | ||
2336 | static struct notifier_block team_notifier_block __read_mostly = { | |
2337 | .notifier_call = team_device_event, | |
2338 | }; | |
2339 | ||
2340 | ||
2341 | /*********************** | |
2342 | * Module init and exit | |
2343 | ***********************/ | |
2344 | ||
2345 | static int __init team_module_init(void) | |
2346 | { | |
2347 | int err; | |
2348 | ||
2349 | register_netdevice_notifier(&team_notifier_block); | |
2350 | ||
2351 | err = rtnl_link_register(&team_link_ops); | |
2352 | if (err) | |
2353 | goto err_rtnl_reg; | |
2354 | ||
2355 | err = team_nl_init(); | |
2356 | if (err) | |
2357 | goto err_nl_init; | |
2358 | ||
2359 | return 0; | |
2360 | ||
2361 | err_nl_init: | |
2362 | rtnl_link_unregister(&team_link_ops); | |
2363 | ||
2364 | err_rtnl_reg: | |
2365 | unregister_netdevice_notifier(&team_notifier_block); | |
2366 | ||
2367 | return err; | |
2368 | } | |
2369 | ||
2370 | static void __exit team_module_exit(void) | |
2371 | { | |
2372 | team_nl_fini(); | |
2373 | rtnl_link_unregister(&team_link_ops); | |
2374 | unregister_netdevice_notifier(&team_notifier_block); | |
2375 | } | |
2376 | ||
2377 | module_init(team_module_init); | |
2378 | module_exit(team_module_exit); | |
2379 | ||
2380 | MODULE_LICENSE("GPL v2"); | |
2381 | MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); | |
2382 | MODULE_DESCRIPTION("Ethernet team device driver"); | |
2383 | MODULE_ALIAS_RTNL_LINK(DRV_NAME); |