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> | |
87002b03 | 21 | #include <linux/if_vlan.h> |
3d249d4c JP |
22 | #include <linux/if_arp.h> |
23 | #include <linux/socket.h> | |
24 | #include <linux/etherdevice.h> | |
25 | #include <linux/rtnetlink.h> | |
26 | #include <net/rtnetlink.h> | |
27 | #include <net/genetlink.h> | |
28 | #include <net/netlink.h> | |
29 | #include <linux/if_team.h> | |
30 | ||
31 | #define DRV_NAME "team" | |
32 | ||
33 | ||
34 | /********** | |
35 | * Helpers | |
36 | **********/ | |
37 | ||
38 | #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT) | |
39 | ||
40 | static struct team_port *team_port_get_rcu(const struct net_device *dev) | |
41 | { | |
42 | struct team_port *port = rcu_dereference(dev->rx_handler_data); | |
43 | ||
44 | return team_port_exists(dev) ? port : NULL; | |
45 | } | |
46 | ||
47 | static struct team_port *team_port_get_rtnl(const struct net_device *dev) | |
48 | { | |
49 | struct team_port *port = rtnl_dereference(dev->rx_handler_data); | |
50 | ||
51 | return team_port_exists(dev) ? port : NULL; | |
52 | } | |
53 | ||
54 | /* | |
55 | * Since the ability to change mac address for open port device is tested in | |
56 | * team_port_add, this function can be called without control of return value | |
57 | */ | |
58 | static int __set_port_mac(struct net_device *port_dev, | |
59 | const unsigned char *dev_addr) | |
60 | { | |
61 | struct sockaddr addr; | |
62 | ||
63 | memcpy(addr.sa_data, dev_addr, ETH_ALEN); | |
64 | addr.sa_family = ARPHRD_ETHER; | |
65 | return dev_set_mac_address(port_dev, &addr); | |
66 | } | |
67 | ||
cade4555 | 68 | static int team_port_set_orig_mac(struct team_port *port) |
3d249d4c JP |
69 | { |
70 | return __set_port_mac(port->dev, port->orig.dev_addr); | |
71 | } | |
72 | ||
73 | int team_port_set_team_mac(struct team_port *port) | |
74 | { | |
75 | return __set_port_mac(port->dev, port->team->dev->dev_addr); | |
76 | } | |
77 | EXPORT_SYMBOL(team_port_set_team_mac); | |
78 | ||
71472ec1 JP |
79 | static void team_refresh_port_linkup(struct team_port *port) |
80 | { | |
81 | port->linkup = port->user.linkup_enabled ? port->user.linkup : | |
82 | port->state.linkup; | |
83 | } | |
3d249d4c | 84 | |
0f1aad2b | 85 | |
3d249d4c JP |
86 | /******************* |
87 | * Options handling | |
88 | *******************/ | |
89 | ||
80f7c668 JP |
90 | struct team_option_inst { /* One for each option instance */ |
91 | struct list_head list; | |
01048d9a | 92 | struct list_head tmp_list; |
80f7c668 | 93 | struct team_option *option; |
85d59a87 | 94 | struct team_option_inst_info info; |
80f7c668 JP |
95 | bool changed; |
96 | bool removed; | |
97 | }; | |
98 | ||
99 | static struct team_option *__team_find_option(struct team *team, | |
100 | const char *opt_name) | |
358b8382 JP |
101 | { |
102 | struct team_option *option; | |
103 | ||
104 | list_for_each_entry(option, &team->option_list, list) { | |
105 | if (strcmp(option->name, opt_name) == 0) | |
106 | return option; | |
107 | } | |
108 | return NULL; | |
109 | } | |
110 | ||
80f7c668 JP |
111 | static void __team_option_inst_del(struct team_option_inst *opt_inst) |
112 | { | |
113 | list_del(&opt_inst->list); | |
114 | kfree(opt_inst); | |
115 | } | |
116 | ||
117 | static void __team_option_inst_del_option(struct team *team, | |
118 | struct team_option *option) | |
119 | { | |
120 | struct team_option_inst *opt_inst, *tmp; | |
121 | ||
122 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
123 | if (opt_inst->option == option) | |
124 | __team_option_inst_del(opt_inst); | |
125 | } | |
126 | } | |
127 | ||
b1303326 JP |
128 | static int __team_option_inst_add(struct team *team, struct team_option *option, |
129 | struct team_port *port) | |
130 | { | |
131 | struct team_option_inst *opt_inst; | |
132 | unsigned int array_size; | |
133 | unsigned int i; | |
85d59a87 | 134 | int err; |
b1303326 JP |
135 | |
136 | array_size = option->array_size; | |
137 | if (!array_size) | |
138 | array_size = 1; /* No array but still need one instance */ | |
139 | ||
140 | for (i = 0; i < array_size; i++) { | |
141 | opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL); | |
142 | if (!opt_inst) | |
143 | return -ENOMEM; | |
144 | opt_inst->option = option; | |
85d59a87 JP |
145 | opt_inst->info.port = port; |
146 | opt_inst->info.array_index = i; | |
b1303326 JP |
147 | opt_inst->changed = true; |
148 | opt_inst->removed = false; | |
149 | list_add_tail(&opt_inst->list, &team->option_inst_list); | |
85d59a87 JP |
150 | if (option->init) { |
151 | err = option->init(team, &opt_inst->info); | |
152 | if (err) | |
153 | return err; | |
154 | } | |
155 | ||
b1303326 JP |
156 | } |
157 | return 0; | |
158 | } | |
159 | ||
80f7c668 JP |
160 | static int __team_option_inst_add_option(struct team *team, |
161 | struct team_option *option) | |
162 | { | |
163 | struct team_port *port; | |
164 | int err; | |
165 | ||
b1303326 | 166 | if (!option->per_port) { |
f88725ff | 167 | err = __team_option_inst_add(team, option, NULL); |
b1303326 JP |
168 | if (err) |
169 | goto inst_del_option; | |
170 | } | |
80f7c668 JP |
171 | |
172 | list_for_each_entry(port, &team->port_list, list) { | |
173 | err = __team_option_inst_add(team, option, port); | |
174 | if (err) | |
175 | goto inst_del_option; | |
176 | } | |
177 | return 0; | |
178 | ||
179 | inst_del_option: | |
180 | __team_option_inst_del_option(team, option); | |
181 | return err; | |
182 | } | |
183 | ||
184 | static void __team_option_inst_mark_removed_option(struct team *team, | |
185 | struct team_option *option) | |
186 | { | |
187 | struct team_option_inst *opt_inst; | |
188 | ||
189 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
190 | if (opt_inst->option == option) { | |
191 | opt_inst->changed = true; | |
192 | opt_inst->removed = true; | |
193 | } | |
194 | } | |
195 | } | |
196 | ||
197 | static void __team_option_inst_del_port(struct team *team, | |
198 | struct team_port *port) | |
199 | { | |
200 | struct team_option_inst *opt_inst, *tmp; | |
201 | ||
202 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
203 | if (opt_inst->option->per_port && | |
85d59a87 | 204 | opt_inst->info.port == port) |
80f7c668 JP |
205 | __team_option_inst_del(opt_inst); |
206 | } | |
207 | } | |
208 | ||
209 | static int __team_option_inst_add_port(struct team *team, | |
210 | struct team_port *port) | |
211 | { | |
212 | struct team_option *option; | |
213 | int err; | |
214 | ||
215 | list_for_each_entry(option, &team->option_list, list) { | |
216 | if (!option->per_port) | |
217 | continue; | |
218 | err = __team_option_inst_add(team, option, port); | |
219 | if (err) | |
220 | goto inst_del_port; | |
221 | } | |
222 | return 0; | |
223 | ||
224 | inst_del_port: | |
225 | __team_option_inst_del_port(team, port); | |
226 | return err; | |
227 | } | |
228 | ||
229 | static void __team_option_inst_mark_removed_port(struct team *team, | |
230 | struct team_port *port) | |
231 | { | |
232 | struct team_option_inst *opt_inst; | |
233 | ||
234 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
85d59a87 | 235 | if (opt_inst->info.port == port) { |
80f7c668 JP |
236 | opt_inst->changed = true; |
237 | opt_inst->removed = true; | |
238 | } | |
239 | } | |
240 | } | |
241 | ||
242 | static int __team_options_register(struct team *team, | |
243 | const struct team_option *option, | |
244 | size_t option_count) | |
3d249d4c JP |
245 | { |
246 | int i; | |
2bba19ff | 247 | struct team_option **dst_opts; |
358b8382 | 248 | int err; |
3d249d4c | 249 | |
2bba19ff JP |
250 | dst_opts = kzalloc(sizeof(struct team_option *) * option_count, |
251 | GFP_KERNEL); | |
252 | if (!dst_opts) | |
253 | return -ENOMEM; | |
358b8382 | 254 | for (i = 0; i < option_count; i++, option++) { |
358b8382 JP |
255 | if (__team_find_option(team, option->name)) { |
256 | err = -EEXIST; | |
80f7c668 | 257 | goto alloc_rollback; |
358b8382 | 258 | } |
f8a15af0 JP |
259 | dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); |
260 | if (!dst_opts[i]) { | |
358b8382 | 261 | err = -ENOMEM; |
80f7c668 | 262 | goto alloc_rollback; |
358b8382 | 263 | } |
358b8382 JP |
264 | } |
265 | ||
b82b9183 | 266 | for (i = 0; i < option_count; i++) { |
80f7c668 JP |
267 | err = __team_option_inst_add_option(team, dst_opts[i]); |
268 | if (err) | |
269 | goto inst_rollback; | |
358b8382 | 270 | list_add_tail(&dst_opts[i]->list, &team->option_list); |
b82b9183 | 271 | } |
358b8382 | 272 | |
2bba19ff | 273 | kfree(dst_opts); |
358b8382 JP |
274 | return 0; |
275 | ||
80f7c668 JP |
276 | inst_rollback: |
277 | for (i--; i >= 0; i--) | |
278 | __team_option_inst_del_option(team, dst_opts[i]); | |
279 | ||
280 | i = option_count - 1; | |
281 | alloc_rollback: | |
282 | for (i--; i >= 0; i--) | |
358b8382 JP |
283 | kfree(dst_opts[i]); |
284 | ||
2bba19ff | 285 | kfree(dst_opts); |
358b8382 | 286 | return err; |
3d249d4c | 287 | } |
358b8382 | 288 | |
b82b9183 JP |
289 | static void __team_options_mark_removed(struct team *team, |
290 | const struct team_option *option, | |
291 | size_t option_count) | |
292 | { | |
293 | int i; | |
294 | ||
295 | for (i = 0; i < option_count; i++, option++) { | |
296 | struct team_option *del_opt; | |
3d249d4c | 297 | |
b82b9183 | 298 | del_opt = __team_find_option(team, option->name); |
80f7c668 JP |
299 | if (del_opt) |
300 | __team_option_inst_mark_removed_option(team, del_opt); | |
b82b9183 JP |
301 | } |
302 | } | |
3d249d4c JP |
303 | |
304 | static void __team_options_unregister(struct team *team, | |
358b8382 | 305 | const struct team_option *option, |
3d249d4c JP |
306 | size_t option_count) |
307 | { | |
308 | int i; | |
309 | ||
358b8382 JP |
310 | for (i = 0; i < option_count; i++, option++) { |
311 | struct team_option *del_opt; | |
312 | ||
313 | del_opt = __team_find_option(team, option->name); | |
314 | if (del_opt) { | |
80f7c668 | 315 | __team_option_inst_del_option(team, del_opt); |
358b8382 JP |
316 | list_del(&del_opt->list); |
317 | kfree(del_opt); | |
318 | } | |
319 | } | |
3d249d4c JP |
320 | } |
321 | ||
b82b9183 | 322 | static void __team_options_change_check(struct team *team); |
01048d9a JP |
323 | static void __team_option_inst_change(struct team *team, |
324 | struct team_option_inst *opt_inst); | |
b82b9183 JP |
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 JP |
362 | { |
363 | int err; | |
364 | ||
f82b959d JP |
365 | if (!opt_inst->option->setter) |
366 | return -EOPNOTSUPP; | |
80f7c668 | 367 | err = opt_inst->option->setter(team, ctx); |
3d249d4c JP |
368 | if (err) |
369 | return err; | |
370 | ||
01048d9a | 371 | __team_option_inst_change(team, opt_inst); |
3d249d4c JP |
372 | return err; |
373 | } | |
374 | ||
0f1aad2b JP |
375 | void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info) |
376 | { | |
377 | struct team_option_inst *opt_inst; | |
378 | ||
379 | opt_inst = container_of(opt_inst_info, struct team_option_inst, info); | |
380 | opt_inst->changed = true; | |
381 | } | |
382 | EXPORT_SYMBOL(team_option_inst_set_change); | |
383 | ||
384 | void team_options_change_check(struct team *team) | |
385 | { | |
386 | __team_options_change_check(team); | |
387 | } | |
388 | EXPORT_SYMBOL(team_options_change_check); | |
389 | ||
390 | ||
3d249d4c JP |
391 | /**************** |
392 | * Mode handling | |
393 | ****************/ | |
394 | ||
395 | static LIST_HEAD(mode_list); | |
396 | static DEFINE_SPINLOCK(mode_list_lock); | |
397 | ||
0402788a JP |
398 | struct team_mode_item { |
399 | struct list_head list; | |
400 | const struct team_mode *mode; | |
401 | }; | |
402 | ||
403 | static struct team_mode_item *__find_mode(const char *kind) | |
3d249d4c | 404 | { |
0402788a | 405 | struct team_mode_item *mitem; |
3d249d4c | 406 | |
0402788a JP |
407 | list_for_each_entry(mitem, &mode_list, list) { |
408 | if (strcmp(mitem->mode->kind, kind) == 0) | |
409 | return mitem; | |
3d249d4c JP |
410 | } |
411 | return NULL; | |
412 | } | |
413 | ||
414 | static bool is_good_mode_name(const char *name) | |
415 | { | |
416 | while (*name != '\0') { | |
417 | if (!isalpha(*name) && !isdigit(*name) && *name != '_') | |
418 | return false; | |
419 | name++; | |
420 | } | |
421 | return true; | |
422 | } | |
423 | ||
0402788a | 424 | int team_mode_register(const struct team_mode *mode) |
3d249d4c JP |
425 | { |
426 | int err = 0; | |
0402788a | 427 | struct team_mode_item *mitem; |
3d249d4c JP |
428 | |
429 | if (!is_good_mode_name(mode->kind) || | |
430 | mode->priv_size > TEAM_MODE_PRIV_SIZE) | |
431 | return -EINVAL; | |
0402788a JP |
432 | |
433 | mitem = kmalloc(sizeof(*mitem), GFP_KERNEL); | |
434 | if (!mitem) | |
435 | return -ENOMEM; | |
436 | ||
3d249d4c JP |
437 | spin_lock(&mode_list_lock); |
438 | if (__find_mode(mode->kind)) { | |
439 | err = -EEXIST; | |
0402788a | 440 | kfree(mitem); |
3d249d4c JP |
441 | goto unlock; |
442 | } | |
0402788a JP |
443 | mitem->mode = mode; |
444 | list_add_tail(&mitem->list, &mode_list); | |
3d249d4c JP |
445 | unlock: |
446 | spin_unlock(&mode_list_lock); | |
447 | return err; | |
448 | } | |
449 | EXPORT_SYMBOL(team_mode_register); | |
450 | ||
0402788a | 451 | void team_mode_unregister(const struct team_mode *mode) |
3d249d4c | 452 | { |
0402788a JP |
453 | struct team_mode_item *mitem; |
454 | ||
3d249d4c | 455 | spin_lock(&mode_list_lock); |
0402788a JP |
456 | mitem = __find_mode(mode->kind); |
457 | if (mitem) { | |
458 | list_del_init(&mitem->list); | |
459 | kfree(mitem); | |
460 | } | |
3d249d4c | 461 | spin_unlock(&mode_list_lock); |
3d249d4c JP |
462 | } |
463 | EXPORT_SYMBOL(team_mode_unregister); | |
464 | ||
0402788a | 465 | static const struct team_mode *team_mode_get(const char *kind) |
3d249d4c | 466 | { |
0402788a JP |
467 | struct team_mode_item *mitem; |
468 | const struct team_mode *mode = NULL; | |
3d249d4c JP |
469 | |
470 | spin_lock(&mode_list_lock); | |
0402788a JP |
471 | mitem = __find_mode(kind); |
472 | if (!mitem) { | |
3d249d4c JP |
473 | spin_unlock(&mode_list_lock); |
474 | request_module("team-mode-%s", kind); | |
475 | spin_lock(&mode_list_lock); | |
0402788a | 476 | mitem = __find_mode(kind); |
3d249d4c | 477 | } |
0402788a JP |
478 | if (mitem) { |
479 | mode = mitem->mode; | |
3d249d4c JP |
480 | if (!try_module_get(mode->owner)) |
481 | mode = NULL; | |
0402788a | 482 | } |
3d249d4c JP |
483 | |
484 | spin_unlock(&mode_list_lock); | |
485 | return mode; | |
486 | } | |
487 | ||
488 | static void team_mode_put(const struct team_mode *mode) | |
489 | { | |
490 | module_put(mode->owner); | |
491 | } | |
492 | ||
493 | static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) | |
494 | { | |
495 | dev_kfree_skb_any(skb); | |
496 | return false; | |
497 | } | |
498 | ||
499 | rx_handler_result_t team_dummy_receive(struct team *team, | |
500 | struct team_port *port, | |
501 | struct sk_buff *skb) | |
502 | { | |
503 | return RX_HANDLER_ANOTHER; | |
504 | } | |
505 | ||
d299cd51 JP |
506 | static const struct team_mode __team_no_mode = { |
507 | .kind = "*NOMODE*", | |
508 | }; | |
509 | ||
510 | static bool team_is_mode_set(struct team *team) | |
511 | { | |
512 | return team->mode != &__team_no_mode; | |
513 | } | |
514 | ||
515 | static void team_set_no_mode(struct team *team) | |
516 | { | |
517 | team->mode = &__team_no_mode; | |
518 | } | |
519 | ||
3d249d4c JP |
520 | static void team_adjust_ops(struct team *team) |
521 | { | |
522 | /* | |
523 | * To avoid checks in rx/tx skb paths, ensure here that non-null and | |
524 | * correct ops are always set. | |
525 | */ | |
526 | ||
527 | if (list_empty(&team->port_list) || | |
d299cd51 | 528 | !team_is_mode_set(team) || !team->mode->ops->transmit) |
3d249d4c JP |
529 | team->ops.transmit = team_dummy_transmit; |
530 | else | |
531 | team->ops.transmit = team->mode->ops->transmit; | |
532 | ||
533 | if (list_empty(&team->port_list) || | |
d299cd51 | 534 | !team_is_mode_set(team) || !team->mode->ops->receive) |
3d249d4c JP |
535 | team->ops.receive = team_dummy_receive; |
536 | else | |
537 | team->ops.receive = team->mode->ops->receive; | |
538 | } | |
539 | ||
540 | /* | |
541 | * We can benefit from the fact that it's ensured no port is present | |
542 | * at the time of mode change. Therefore no packets are in fly so there's no | |
543 | * need to set mode operations in any special way. | |
544 | */ | |
545 | static int __team_change_mode(struct team *team, | |
546 | const struct team_mode *new_mode) | |
547 | { | |
548 | /* Check if mode was previously set and do cleanup if so */ | |
d299cd51 | 549 | if (team_is_mode_set(team)) { |
3d249d4c JP |
550 | void (*exit_op)(struct team *team) = team->ops.exit; |
551 | ||
552 | /* Clear ops area so no callback is called any longer */ | |
553 | memset(&team->ops, 0, sizeof(struct team_mode_ops)); | |
554 | team_adjust_ops(team); | |
555 | ||
556 | if (exit_op) | |
557 | exit_op(team); | |
558 | team_mode_put(team->mode); | |
d299cd51 | 559 | team_set_no_mode(team); |
3d249d4c JP |
560 | /* zero private data area */ |
561 | memset(&team->mode_priv, 0, | |
562 | sizeof(struct team) - offsetof(struct team, mode_priv)); | |
563 | } | |
564 | ||
565 | if (!new_mode) | |
566 | return 0; | |
567 | ||
568 | if (new_mode->ops->init) { | |
569 | int err; | |
570 | ||
571 | err = new_mode->ops->init(team); | |
572 | if (err) | |
573 | return err; | |
574 | } | |
575 | ||
576 | team->mode = new_mode; | |
577 | memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); | |
578 | team_adjust_ops(team); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | static int team_change_mode(struct team *team, const char *kind) | |
584 | { | |
0402788a | 585 | const struct team_mode *new_mode; |
3d249d4c JP |
586 | struct net_device *dev = team->dev; |
587 | int err; | |
588 | ||
589 | if (!list_empty(&team->port_list)) { | |
590 | netdev_err(dev, "No ports can be present during mode change\n"); | |
591 | return -EBUSY; | |
592 | } | |
593 | ||
d299cd51 | 594 | if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) { |
3d249d4c JP |
595 | netdev_err(dev, "Unable to change to the same mode the team is in\n"); |
596 | return -EINVAL; | |
597 | } | |
598 | ||
599 | new_mode = team_mode_get(kind); | |
600 | if (!new_mode) { | |
601 | netdev_err(dev, "Mode \"%s\" not found\n", kind); | |
602 | return -EINVAL; | |
603 | } | |
604 | ||
605 | err = __team_change_mode(team, new_mode); | |
606 | if (err) { | |
607 | netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); | |
608 | team_mode_put(new_mode); | |
609 | return err; | |
610 | } | |
611 | ||
612 | netdev_info(dev, "Mode changed to \"%s\"\n", kind); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | ||
617 | /************************ | |
618 | * Rx path frame handler | |
619 | ************************/ | |
620 | ||
19a0b58e JP |
621 | static bool team_port_enabled(struct team_port *port); |
622 | ||
3d249d4c JP |
623 | /* note: already called with rcu_read_lock */ |
624 | static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) | |
625 | { | |
626 | struct sk_buff *skb = *pskb; | |
627 | struct team_port *port; | |
628 | struct team *team; | |
629 | rx_handler_result_t res; | |
630 | ||
631 | skb = skb_share_check(skb, GFP_ATOMIC); | |
632 | if (!skb) | |
633 | return RX_HANDLER_CONSUMED; | |
634 | ||
635 | *pskb = skb; | |
636 | ||
637 | port = team_port_get_rcu(skb->dev); | |
638 | team = port->team; | |
19a0b58e JP |
639 | if (!team_port_enabled(port)) { |
640 | /* allow exact match delivery for disabled ports */ | |
641 | res = RX_HANDLER_EXACT; | |
642 | } else { | |
643 | res = team->ops.receive(team, port, skb); | |
644 | } | |
3d249d4c JP |
645 | if (res == RX_HANDLER_ANOTHER) { |
646 | struct team_pcpu_stats *pcpu_stats; | |
647 | ||
648 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
649 | u64_stats_update_begin(&pcpu_stats->syncp); | |
650 | pcpu_stats->rx_packets++; | |
651 | pcpu_stats->rx_bytes += skb->len; | |
652 | if (skb->pkt_type == PACKET_MULTICAST) | |
653 | pcpu_stats->rx_multicast++; | |
654 | u64_stats_update_end(&pcpu_stats->syncp); | |
655 | ||
656 | skb->dev = team->dev; | |
657 | } else { | |
658 | this_cpu_inc(team->pcpu_stats->rx_dropped); | |
659 | } | |
660 | ||
661 | return res; | |
662 | } | |
663 | ||
664 | ||
665 | /**************** | |
666 | * Port handling | |
667 | ****************/ | |
668 | ||
669 | static bool team_port_find(const struct team *team, | |
670 | const struct team_port *port) | |
671 | { | |
672 | struct team_port *cur; | |
673 | ||
674 | list_for_each_entry(cur, &team->port_list, list) | |
675 | if (cur == port) | |
676 | return true; | |
677 | return false; | |
678 | } | |
679 | ||
19a0b58e JP |
680 | static bool team_port_enabled(struct team_port *port) |
681 | { | |
682 | return port->index != -1; | |
683 | } | |
684 | ||
3d249d4c | 685 | /* |
19a0b58e JP |
686 | * Enable/disable port by adding to enabled port hashlist and setting |
687 | * port->index (Might be racy so reader could see incorrect ifindex when | |
688 | * processing a flying packet, but that is not a problem). Write guarded | |
689 | * by team->lock. | |
3d249d4c | 690 | */ |
19a0b58e JP |
691 | static void team_port_enable(struct team *team, |
692 | struct team_port *port) | |
3d249d4c | 693 | { |
19a0b58e JP |
694 | if (team_port_enabled(port)) |
695 | return; | |
696 | port->index = team->en_port_count++; | |
3d249d4c JP |
697 | hlist_add_head_rcu(&port->hlist, |
698 | team_port_index_hash(team, port->index)); | |
4bccfd17 JP |
699 | if (team->ops.port_enabled) |
700 | team->ops.port_enabled(team, port); | |
3d249d4c JP |
701 | } |
702 | ||
703 | static void __reconstruct_port_hlist(struct team *team, int rm_index) | |
704 | { | |
705 | int i; | |
706 | struct team_port *port; | |
707 | ||
19a0b58e | 708 | for (i = rm_index + 1; i < team->en_port_count; i++) { |
3d249d4c JP |
709 | port = team_get_port_by_index(team, i); |
710 | hlist_del_rcu(&port->hlist); | |
711 | port->index--; | |
712 | hlist_add_head_rcu(&port->hlist, | |
713 | team_port_index_hash(team, port->index)); | |
714 | } | |
715 | } | |
716 | ||
19a0b58e JP |
717 | static void team_port_disable(struct team *team, |
718 | struct team_port *port) | |
3d249d4c JP |
719 | { |
720 | int rm_index = port->index; | |
721 | ||
19a0b58e JP |
722 | if (!team_port_enabled(port)) |
723 | return; | |
4bccfd17 JP |
724 | if (team->ops.port_disabled) |
725 | team->ops.port_disabled(team, port); | |
3d249d4c | 726 | hlist_del_rcu(&port->hlist); |
3d249d4c | 727 | __reconstruct_port_hlist(team, rm_index); |
19a0b58e JP |
728 | team->en_port_count--; |
729 | port->index = -1; | |
3d249d4c JP |
730 | } |
731 | ||
732 | #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \ | |
733 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ | |
734 | NETIF_F_HIGHDMA | NETIF_F_LRO) | |
735 | ||
736 | static void __team_compute_features(struct team *team) | |
737 | { | |
738 | struct team_port *port; | |
739 | u32 vlan_features = TEAM_VLAN_FEATURES; | |
740 | unsigned short max_hard_header_len = ETH_HLEN; | |
741 | ||
742 | list_for_each_entry(port, &team->port_list, list) { | |
743 | vlan_features = netdev_increment_features(vlan_features, | |
744 | port->dev->vlan_features, | |
745 | TEAM_VLAN_FEATURES); | |
746 | ||
747 | if (port->dev->hard_header_len > max_hard_header_len) | |
748 | max_hard_header_len = port->dev->hard_header_len; | |
749 | } | |
750 | ||
751 | team->dev->vlan_features = vlan_features; | |
752 | team->dev->hard_header_len = max_hard_header_len; | |
753 | ||
754 | netdev_change_features(team->dev); | |
755 | } | |
756 | ||
757 | static void team_compute_features(struct team *team) | |
758 | { | |
61dc3461 | 759 | mutex_lock(&team->lock); |
3d249d4c | 760 | __team_compute_features(team); |
61dc3461 | 761 | mutex_unlock(&team->lock); |
3d249d4c JP |
762 | } |
763 | ||
764 | static int team_port_enter(struct team *team, struct team_port *port) | |
765 | { | |
766 | int err = 0; | |
767 | ||
768 | dev_hold(team->dev); | |
769 | port->dev->priv_flags |= IFF_TEAM_PORT; | |
770 | if (team->ops.port_enter) { | |
771 | err = team->ops.port_enter(team, port); | |
772 | if (err) { | |
773 | netdev_err(team->dev, "Device %s failed to enter team mode\n", | |
774 | port->dev->name); | |
775 | goto err_port_enter; | |
776 | } | |
777 | } | |
778 | ||
779 | return 0; | |
780 | ||
781 | err_port_enter: | |
782 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
783 | dev_put(team->dev); | |
784 | ||
785 | return err; | |
786 | } | |
787 | ||
788 | static void team_port_leave(struct team *team, struct team_port *port) | |
789 | { | |
790 | if (team->ops.port_leave) | |
791 | team->ops.port_leave(team, port); | |
792 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
793 | dev_put(team->dev); | |
794 | } | |
795 | ||
796 | static void __team_port_change_check(struct team_port *port, bool linkup); | |
797 | ||
798 | static int team_port_add(struct team *team, struct net_device *port_dev) | |
799 | { | |
800 | struct net_device *dev = team->dev; | |
801 | struct team_port *port; | |
802 | char *portname = port_dev->name; | |
803 | int err; | |
804 | ||
805 | if (port_dev->flags & IFF_LOOPBACK || | |
806 | port_dev->type != ARPHRD_ETHER) { | |
807 | netdev_err(dev, "Device %s is of an unsupported type\n", | |
808 | portname); | |
809 | return -EINVAL; | |
810 | } | |
811 | ||
812 | if (team_port_exists(port_dev)) { | |
813 | netdev_err(dev, "Device %s is already a port " | |
814 | "of a team device\n", portname); | |
815 | return -EBUSY; | |
816 | } | |
817 | ||
818 | if (port_dev->flags & IFF_UP) { | |
819 | netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", | |
820 | portname); | |
821 | return -EBUSY; | |
822 | } | |
823 | ||
5149ee58 JP |
824 | port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size, |
825 | GFP_KERNEL); | |
3d249d4c JP |
826 | if (!port) |
827 | return -ENOMEM; | |
828 | ||
829 | port->dev = port_dev; | |
830 | port->team = team; | |
831 | ||
832 | port->orig.mtu = port_dev->mtu; | |
833 | err = dev_set_mtu(port_dev, dev->mtu); | |
834 | if (err) { | |
835 | netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); | |
836 | goto err_set_mtu; | |
837 | } | |
838 | ||
839 | memcpy(port->orig.dev_addr, port_dev->dev_addr, ETH_ALEN); | |
840 | ||
841 | err = team_port_enter(team, port); | |
842 | if (err) { | |
843 | netdev_err(dev, "Device %s failed to enter team mode\n", | |
844 | portname); | |
845 | goto err_port_enter; | |
846 | } | |
847 | ||
848 | err = dev_open(port_dev); | |
849 | if (err) { | |
850 | netdev_dbg(dev, "Device %s opening failed\n", | |
851 | portname); | |
852 | goto err_dev_open; | |
853 | } | |
854 | ||
57459185 JP |
855 | err = vlan_vids_add_by_dev(port_dev, dev); |
856 | if (err) { | |
857 | netdev_err(dev, "Failed to add vlan ids to device %s\n", | |
858 | portname); | |
859 | goto err_vids_add; | |
860 | } | |
861 | ||
3d249d4c JP |
862 | err = netdev_set_master(port_dev, dev); |
863 | if (err) { | |
864 | netdev_err(dev, "Device %s failed to set master\n", portname); | |
865 | goto err_set_master; | |
866 | } | |
867 | ||
868 | err = netdev_rx_handler_register(port_dev, team_handle_frame, | |
869 | port); | |
870 | if (err) { | |
871 | netdev_err(dev, "Device %s failed to register rx_handler\n", | |
872 | portname); | |
873 | goto err_handler_register; | |
874 | } | |
875 | ||
35b384bd | 876 | err = __team_option_inst_add_port(team, port); |
80f7c668 JP |
877 | if (err) { |
878 | netdev_err(dev, "Device %s failed to add per-port options\n", | |
879 | portname); | |
880 | goto err_option_port_add; | |
881 | } | |
882 | ||
19a0b58e JP |
883 | port->index = -1; |
884 | team_port_enable(team, port); | |
885 | list_add_tail_rcu(&port->list, &team->port_list); | |
3d249d4c JP |
886 | team_adjust_ops(team); |
887 | __team_compute_features(team); | |
888 | __team_port_change_check(port, !!netif_carrier_ok(port_dev)); | |
35b384bd | 889 | __team_options_change_check(team); |
3d249d4c JP |
890 | |
891 | netdev_info(dev, "Port device %s added\n", portname); | |
892 | ||
893 | return 0; | |
894 | ||
80f7c668 JP |
895 | err_option_port_add: |
896 | netdev_rx_handler_unregister(port_dev); | |
897 | ||
3d249d4c JP |
898 | err_handler_register: |
899 | netdev_set_master(port_dev, NULL); | |
900 | ||
901 | err_set_master: | |
57459185 JP |
902 | vlan_vids_del_by_dev(port_dev, dev); |
903 | ||
904 | err_vids_add: | |
3d249d4c JP |
905 | dev_close(port_dev); |
906 | ||
907 | err_dev_open: | |
908 | team_port_leave(team, port); | |
909 | team_port_set_orig_mac(port); | |
910 | ||
911 | err_port_enter: | |
912 | dev_set_mtu(port_dev, port->orig.mtu); | |
913 | ||
914 | err_set_mtu: | |
915 | kfree(port); | |
916 | ||
917 | return err; | |
918 | } | |
919 | ||
920 | static int team_port_del(struct team *team, struct net_device *port_dev) | |
921 | { | |
922 | struct net_device *dev = team->dev; | |
923 | struct team_port *port; | |
924 | char *portname = port_dev->name; | |
925 | ||
926 | port = team_port_get_rtnl(port_dev); | |
927 | if (!port || !team_port_find(team, port)) { | |
928 | netdev_err(dev, "Device %s does not act as a port of this team\n", | |
929 | portname); | |
930 | return -ENOENT; | |
931 | } | |
932 | ||
35b384bd JP |
933 | __team_option_inst_mark_removed_port(team, port); |
934 | __team_options_change_check(team); | |
935 | __team_option_inst_del_port(team, port); | |
b82b9183 | 936 | port->removed = true; |
3d249d4c | 937 | __team_port_change_check(port, false); |
19a0b58e JP |
938 | team_port_disable(team, port); |
939 | list_del_rcu(&port->list); | |
3d249d4c JP |
940 | team_adjust_ops(team); |
941 | netdev_rx_handler_unregister(port_dev); | |
942 | netdev_set_master(port_dev, NULL); | |
57459185 | 943 | vlan_vids_del_by_dev(port_dev, dev); |
3d249d4c JP |
944 | dev_close(port_dev); |
945 | team_port_leave(team, port); | |
946 | team_port_set_orig_mac(port); | |
947 | dev_set_mtu(port_dev, port->orig.mtu); | |
948 | synchronize_rcu(); | |
949 | kfree(port); | |
950 | netdev_info(dev, "Port device %s removed\n", portname); | |
951 | __team_compute_features(team); | |
952 | ||
953 | return 0; | |
954 | } | |
955 | ||
956 | ||
957 | /***************** | |
958 | * Net device ops | |
959 | *****************/ | |
960 | ||
80f7c668 | 961 | static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 962 | { |
d299cd51 | 963 | ctx->data.str_val = team->mode->kind; |
3d249d4c JP |
964 | return 0; |
965 | } | |
966 | ||
80f7c668 | 967 | static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 968 | { |
80f7c668 | 969 | return team_change_mode(team, ctx->data.str_val); |
3d249d4c JP |
970 | } |
971 | ||
acd69962 JP |
972 | static int team_port_en_option_get(struct team *team, |
973 | struct team_gsetter_ctx *ctx) | |
974 | { | |
85d59a87 JP |
975 | struct team_port *port = ctx->info->port; |
976 | ||
977 | ctx->data.bool_val = team_port_enabled(port); | |
acd69962 JP |
978 | return 0; |
979 | } | |
980 | ||
981 | static int team_port_en_option_set(struct team *team, | |
982 | struct team_gsetter_ctx *ctx) | |
983 | { | |
85d59a87 JP |
984 | struct team_port *port = ctx->info->port; |
985 | ||
acd69962 | 986 | if (ctx->data.bool_val) |
85d59a87 | 987 | team_port_enable(team, port); |
acd69962 | 988 | else |
85d59a87 | 989 | team_port_disable(team, port); |
acd69962 JP |
990 | return 0; |
991 | } | |
992 | ||
71472ec1 JP |
993 | static int team_user_linkup_option_get(struct team *team, |
994 | struct team_gsetter_ctx *ctx) | |
995 | { | |
85d59a87 JP |
996 | struct team_port *port = ctx->info->port; |
997 | ||
998 | ctx->data.bool_val = port->user.linkup; | |
71472ec1 JP |
999 | return 0; |
1000 | } | |
1001 | ||
1002 | static int team_user_linkup_option_set(struct team *team, | |
1003 | struct team_gsetter_ctx *ctx) | |
1004 | { | |
85d59a87 JP |
1005 | struct team_port *port = ctx->info->port; |
1006 | ||
1007 | port->user.linkup = ctx->data.bool_val; | |
1008 | team_refresh_port_linkup(port); | |
71472ec1 JP |
1009 | return 0; |
1010 | } | |
1011 | ||
1012 | static int team_user_linkup_en_option_get(struct team *team, | |
1013 | struct team_gsetter_ctx *ctx) | |
1014 | { | |
85d59a87 | 1015 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1016 | |
1017 | ctx->data.bool_val = port->user.linkup_enabled; | |
1018 | return 0; | |
1019 | } | |
1020 | ||
1021 | static int team_user_linkup_en_option_set(struct team *team, | |
1022 | struct team_gsetter_ctx *ctx) | |
1023 | { | |
85d59a87 | 1024 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1025 | |
1026 | port->user.linkup_enabled = ctx->data.bool_val; | |
85d59a87 | 1027 | team_refresh_port_linkup(port); |
71472ec1 JP |
1028 | return 0; |
1029 | } | |
1030 | ||
358b8382 | 1031 | static const struct team_option team_options[] = { |
3d249d4c JP |
1032 | { |
1033 | .name = "mode", | |
1034 | .type = TEAM_OPTION_TYPE_STRING, | |
1035 | .getter = team_mode_option_get, | |
1036 | .setter = team_mode_option_set, | |
1037 | }, | |
acd69962 JP |
1038 | { |
1039 | .name = "enabled", | |
1040 | .type = TEAM_OPTION_TYPE_BOOL, | |
1041 | .per_port = true, | |
1042 | .getter = team_port_en_option_get, | |
1043 | .setter = team_port_en_option_set, | |
1044 | }, | |
71472ec1 JP |
1045 | { |
1046 | .name = "user_linkup", | |
1047 | .type = TEAM_OPTION_TYPE_BOOL, | |
1048 | .per_port = true, | |
1049 | .getter = team_user_linkup_option_get, | |
1050 | .setter = team_user_linkup_option_set, | |
1051 | }, | |
1052 | { | |
1053 | .name = "user_linkup_enabled", | |
1054 | .type = TEAM_OPTION_TYPE_BOOL, | |
1055 | .per_port = true, | |
1056 | .getter = team_user_linkup_en_option_get, | |
1057 | .setter = team_user_linkup_en_option_set, | |
1058 | }, | |
3d249d4c JP |
1059 | }; |
1060 | ||
1061 | static int team_init(struct net_device *dev) | |
1062 | { | |
1063 | struct team *team = netdev_priv(dev); | |
1064 | int i; | |
358b8382 | 1065 | int err; |
3d249d4c JP |
1066 | |
1067 | team->dev = dev; | |
61dc3461 | 1068 | mutex_init(&team->lock); |
d299cd51 | 1069 | team_set_no_mode(team); |
3d249d4c JP |
1070 | |
1071 | team->pcpu_stats = alloc_percpu(struct team_pcpu_stats); | |
1072 | if (!team->pcpu_stats) | |
1073 | return -ENOMEM; | |
1074 | ||
1075 | for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) | |
19a0b58e | 1076 | INIT_HLIST_HEAD(&team->en_port_hlist[i]); |
3d249d4c JP |
1077 | INIT_LIST_HEAD(&team->port_list); |
1078 | ||
1079 | team_adjust_ops(team); | |
1080 | ||
1081 | INIT_LIST_HEAD(&team->option_list); | |
80f7c668 | 1082 | INIT_LIST_HEAD(&team->option_inst_list); |
358b8382 JP |
1083 | err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); |
1084 | if (err) | |
1085 | goto err_options_register; | |
3d249d4c JP |
1086 | netif_carrier_off(dev); |
1087 | ||
1088 | return 0; | |
358b8382 JP |
1089 | |
1090 | err_options_register: | |
1091 | free_percpu(team->pcpu_stats); | |
1092 | ||
1093 | return err; | |
3d249d4c JP |
1094 | } |
1095 | ||
1096 | static void team_uninit(struct net_device *dev) | |
1097 | { | |
1098 | struct team *team = netdev_priv(dev); | |
1099 | struct team_port *port; | |
1100 | struct team_port *tmp; | |
1101 | ||
61dc3461 | 1102 | mutex_lock(&team->lock); |
3d249d4c JP |
1103 | list_for_each_entry_safe(port, tmp, &team->port_list, list) |
1104 | team_port_del(team, port->dev); | |
1105 | ||
1106 | __team_change_mode(team, NULL); /* cleanup */ | |
1107 | __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); | |
61dc3461 | 1108 | mutex_unlock(&team->lock); |
3d249d4c JP |
1109 | } |
1110 | ||
1111 | static void team_destructor(struct net_device *dev) | |
1112 | { | |
1113 | struct team *team = netdev_priv(dev); | |
1114 | ||
1115 | free_percpu(team->pcpu_stats); | |
1116 | free_netdev(dev); | |
1117 | } | |
1118 | ||
1119 | static int team_open(struct net_device *dev) | |
1120 | { | |
1121 | netif_carrier_on(dev); | |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | static int team_close(struct net_device *dev) | |
1126 | { | |
1127 | netif_carrier_off(dev); | |
1128 | return 0; | |
1129 | } | |
1130 | ||
1131 | /* | |
1132 | * note: already called with rcu_read_lock | |
1133 | */ | |
1134 | static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) | |
1135 | { | |
1136 | struct team *team = netdev_priv(dev); | |
1137 | bool tx_success = false; | |
1138 | unsigned int len = skb->len; | |
1139 | ||
1140 | tx_success = team->ops.transmit(team, skb); | |
1141 | if (tx_success) { | |
1142 | struct team_pcpu_stats *pcpu_stats; | |
1143 | ||
1144 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
1145 | u64_stats_update_begin(&pcpu_stats->syncp); | |
1146 | pcpu_stats->tx_packets++; | |
1147 | pcpu_stats->tx_bytes += len; | |
1148 | u64_stats_update_end(&pcpu_stats->syncp); | |
1149 | } else { | |
1150 | this_cpu_inc(team->pcpu_stats->tx_dropped); | |
1151 | } | |
1152 | ||
1153 | return NETDEV_TX_OK; | |
1154 | } | |
1155 | ||
1156 | static void team_change_rx_flags(struct net_device *dev, int change) | |
1157 | { | |
1158 | struct team *team = netdev_priv(dev); | |
1159 | struct team_port *port; | |
1160 | int inc; | |
1161 | ||
1162 | rcu_read_lock(); | |
1163 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1164 | if (change & IFF_PROMISC) { | |
1165 | inc = dev->flags & IFF_PROMISC ? 1 : -1; | |
1166 | dev_set_promiscuity(port->dev, inc); | |
1167 | } | |
1168 | if (change & IFF_ALLMULTI) { | |
1169 | inc = dev->flags & IFF_ALLMULTI ? 1 : -1; | |
1170 | dev_set_allmulti(port->dev, inc); | |
1171 | } | |
1172 | } | |
1173 | rcu_read_unlock(); | |
1174 | } | |
1175 | ||
1176 | static void team_set_rx_mode(struct net_device *dev) | |
1177 | { | |
1178 | struct team *team = netdev_priv(dev); | |
1179 | struct team_port *port; | |
1180 | ||
1181 | rcu_read_lock(); | |
1182 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1183 | dev_uc_sync(port->dev, dev); | |
1184 | dev_mc_sync(port->dev, dev); | |
1185 | } | |
1186 | rcu_read_unlock(); | |
1187 | } | |
1188 | ||
1189 | static int team_set_mac_address(struct net_device *dev, void *p) | |
1190 | { | |
1191 | struct team *team = netdev_priv(dev); | |
1192 | struct team_port *port; | |
1193 | struct sockaddr *addr = p; | |
1194 | ||
7ce5d222 | 1195 | dev->addr_assign_type &= ~NET_ADDR_RANDOM; |
3d249d4c JP |
1196 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); |
1197 | rcu_read_lock(); | |
1198 | list_for_each_entry_rcu(port, &team->port_list, list) | |
1199 | if (team->ops.port_change_mac) | |
1200 | team->ops.port_change_mac(team, port); | |
1201 | rcu_read_unlock(); | |
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | static int team_change_mtu(struct net_device *dev, int new_mtu) | |
1206 | { | |
1207 | struct team *team = netdev_priv(dev); | |
1208 | struct team_port *port; | |
1209 | int err; | |
1210 | ||
1211 | /* | |
1212 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1213 | * to traverse list in reverse under rcu_read_lock | |
1214 | */ | |
61dc3461 | 1215 | mutex_lock(&team->lock); |
3d249d4c JP |
1216 | list_for_each_entry(port, &team->port_list, list) { |
1217 | err = dev_set_mtu(port->dev, new_mtu); | |
1218 | if (err) { | |
1219 | netdev_err(dev, "Device %s failed to change mtu", | |
1220 | port->dev->name); | |
1221 | goto unwind; | |
1222 | } | |
1223 | } | |
61dc3461 | 1224 | mutex_unlock(&team->lock); |
3d249d4c JP |
1225 | |
1226 | dev->mtu = new_mtu; | |
1227 | ||
1228 | return 0; | |
1229 | ||
1230 | unwind: | |
1231 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1232 | dev_set_mtu(port->dev, dev->mtu); | |
61dc3461 | 1233 | mutex_unlock(&team->lock); |
3d249d4c JP |
1234 | |
1235 | return err; | |
1236 | } | |
1237 | ||
1238 | static struct rtnl_link_stats64 * | |
1239 | team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
1240 | { | |
1241 | struct team *team = netdev_priv(dev); | |
1242 | struct team_pcpu_stats *p; | |
1243 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; | |
1244 | u32 rx_dropped = 0, tx_dropped = 0; | |
1245 | unsigned int start; | |
1246 | int i; | |
1247 | ||
1248 | for_each_possible_cpu(i) { | |
1249 | p = per_cpu_ptr(team->pcpu_stats, i); | |
1250 | do { | |
1251 | start = u64_stats_fetch_begin_bh(&p->syncp); | |
1252 | rx_packets = p->rx_packets; | |
1253 | rx_bytes = p->rx_bytes; | |
1254 | rx_multicast = p->rx_multicast; | |
1255 | tx_packets = p->tx_packets; | |
1256 | tx_bytes = p->tx_bytes; | |
1257 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); | |
1258 | ||
1259 | stats->rx_packets += rx_packets; | |
1260 | stats->rx_bytes += rx_bytes; | |
1261 | stats->multicast += rx_multicast; | |
1262 | stats->tx_packets += tx_packets; | |
1263 | stats->tx_bytes += tx_bytes; | |
1264 | /* | |
1265 | * rx_dropped & tx_dropped are u32, updated | |
1266 | * without syncp protection. | |
1267 | */ | |
1268 | rx_dropped += p->rx_dropped; | |
1269 | tx_dropped += p->tx_dropped; | |
1270 | } | |
1271 | stats->rx_dropped = rx_dropped; | |
1272 | stats->tx_dropped = tx_dropped; | |
1273 | return stats; | |
1274 | } | |
1275 | ||
8e586137 | 1276 | static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1277 | { |
1278 | struct team *team = netdev_priv(dev); | |
1279 | struct team_port *port; | |
87002b03 | 1280 | int err; |
3d249d4c | 1281 | |
87002b03 JP |
1282 | /* |
1283 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1284 | * to traverse list in reverse under rcu_read_lock | |
1285 | */ | |
1286 | mutex_lock(&team->lock); | |
1287 | list_for_each_entry(port, &team->port_list, list) { | |
1288 | err = vlan_vid_add(port->dev, vid); | |
1289 | if (err) | |
1290 | goto unwind; | |
3d249d4c | 1291 | } |
87002b03 | 1292 | mutex_unlock(&team->lock); |
8e586137 JP |
1293 | |
1294 | return 0; | |
87002b03 JP |
1295 | |
1296 | unwind: | |
1297 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1298 | vlan_vid_del(port->dev, vid); | |
1299 | mutex_unlock(&team->lock); | |
1300 | ||
1301 | return err; | |
3d249d4c JP |
1302 | } |
1303 | ||
8e586137 | 1304 | static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1305 | { |
1306 | struct team *team = netdev_priv(dev); | |
1307 | struct team_port *port; | |
1308 | ||
1309 | rcu_read_lock(); | |
87002b03 JP |
1310 | list_for_each_entry_rcu(port, &team->port_list, list) |
1311 | vlan_vid_del(port->dev, vid); | |
3d249d4c | 1312 | rcu_read_unlock(); |
8e586137 JP |
1313 | |
1314 | return 0; | |
3d249d4c JP |
1315 | } |
1316 | ||
1317 | static int team_add_slave(struct net_device *dev, struct net_device *port_dev) | |
1318 | { | |
1319 | struct team *team = netdev_priv(dev); | |
1320 | int err; | |
1321 | ||
61dc3461 | 1322 | mutex_lock(&team->lock); |
3d249d4c | 1323 | err = team_port_add(team, port_dev); |
61dc3461 | 1324 | mutex_unlock(&team->lock); |
3d249d4c JP |
1325 | return err; |
1326 | } | |
1327 | ||
1328 | static int team_del_slave(struct net_device *dev, struct net_device *port_dev) | |
1329 | { | |
1330 | struct team *team = netdev_priv(dev); | |
1331 | int err; | |
1332 | ||
61dc3461 | 1333 | mutex_lock(&team->lock); |
3d249d4c | 1334 | err = team_port_del(team, port_dev); |
61dc3461 | 1335 | mutex_unlock(&team->lock); |
3d249d4c JP |
1336 | return err; |
1337 | } | |
1338 | ||
234a8fd4 JP |
1339 | static netdev_features_t team_fix_features(struct net_device *dev, |
1340 | netdev_features_t features) | |
1341 | { | |
1342 | struct team_port *port; | |
1343 | struct team *team = netdev_priv(dev); | |
1344 | netdev_features_t mask; | |
1345 | ||
1346 | mask = features; | |
1347 | features &= ~NETIF_F_ONE_FOR_ALL; | |
1348 | features |= NETIF_F_ALL_FOR_ALL; | |
1349 | ||
1350 | rcu_read_lock(); | |
1351 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1352 | features = netdev_increment_features(features, | |
1353 | port->dev->features, | |
1354 | mask); | |
1355 | } | |
1356 | rcu_read_unlock(); | |
1357 | return features; | |
1358 | } | |
1359 | ||
3d249d4c JP |
1360 | static const struct net_device_ops team_netdev_ops = { |
1361 | .ndo_init = team_init, | |
1362 | .ndo_uninit = team_uninit, | |
1363 | .ndo_open = team_open, | |
1364 | .ndo_stop = team_close, | |
1365 | .ndo_start_xmit = team_xmit, | |
1366 | .ndo_change_rx_flags = team_change_rx_flags, | |
1367 | .ndo_set_rx_mode = team_set_rx_mode, | |
1368 | .ndo_set_mac_address = team_set_mac_address, | |
1369 | .ndo_change_mtu = team_change_mtu, | |
1370 | .ndo_get_stats64 = team_get_stats64, | |
1371 | .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, | |
1372 | .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, | |
1373 | .ndo_add_slave = team_add_slave, | |
1374 | .ndo_del_slave = team_del_slave, | |
234a8fd4 | 1375 | .ndo_fix_features = team_fix_features, |
3d249d4c JP |
1376 | }; |
1377 | ||
1378 | ||
1379 | /*********************** | |
1380 | * rt netlink interface | |
1381 | ***********************/ | |
1382 | ||
1383 | static void team_setup(struct net_device *dev) | |
1384 | { | |
1385 | ether_setup(dev); | |
1386 | ||
1387 | dev->netdev_ops = &team_netdev_ops; | |
1388 | dev->destructor = team_destructor; | |
1389 | dev->tx_queue_len = 0; | |
1390 | dev->flags |= IFF_MULTICAST; | |
1391 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); | |
1392 | ||
1393 | /* | |
1394 | * Indicate we support unicast address filtering. That way core won't | |
1395 | * bring us to promisc mode in case a unicast addr is added. | |
1396 | * Let this up to underlay drivers. | |
1397 | */ | |
1398 | dev->priv_flags |= IFF_UNICAST_FLT; | |
1399 | ||
1400 | dev->features |= NETIF_F_LLTX; | |
1401 | dev->features |= NETIF_F_GRO; | |
1402 | dev->hw_features = NETIF_F_HW_VLAN_TX | | |
1403 | NETIF_F_HW_VLAN_RX | | |
1404 | NETIF_F_HW_VLAN_FILTER; | |
1405 | ||
1406 | dev->features |= dev->hw_features; | |
1407 | } | |
1408 | ||
1409 | static int team_newlink(struct net *src_net, struct net_device *dev, | |
1410 | struct nlattr *tb[], struct nlattr *data[]) | |
1411 | { | |
1412 | int err; | |
1413 | ||
1414 | if (tb[IFLA_ADDRESS] == NULL) | |
7ce5d222 | 1415 | eth_hw_addr_random(dev); |
3d249d4c JP |
1416 | |
1417 | err = register_netdevice(dev); | |
1418 | if (err) | |
1419 | return err; | |
1420 | ||
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | static int team_validate(struct nlattr *tb[], struct nlattr *data[]) | |
1425 | { | |
1426 | if (tb[IFLA_ADDRESS]) { | |
1427 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
1428 | return -EINVAL; | |
1429 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
1430 | return -EADDRNOTAVAIL; | |
1431 | } | |
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | static struct rtnl_link_ops team_link_ops __read_mostly = { | |
1436 | .kind = DRV_NAME, | |
1437 | .priv_size = sizeof(struct team), | |
1438 | .setup = team_setup, | |
1439 | .newlink = team_newlink, | |
1440 | .validate = team_validate, | |
1441 | }; | |
1442 | ||
1443 | ||
1444 | /*********************************** | |
1445 | * Generic netlink custom interface | |
1446 | ***********************************/ | |
1447 | ||
1448 | static struct genl_family team_nl_family = { | |
1449 | .id = GENL_ID_GENERATE, | |
1450 | .name = TEAM_GENL_NAME, | |
1451 | .version = TEAM_GENL_VERSION, | |
1452 | .maxattr = TEAM_ATTR_MAX, | |
1453 | .netnsok = true, | |
1454 | }; | |
1455 | ||
1456 | static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { | |
1457 | [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1458 | [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, | |
1459 | [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, | |
1460 | [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, | |
1461 | }; | |
1462 | ||
1463 | static const struct nla_policy | |
1464 | team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { | |
1465 | [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1466 | [TEAM_ATTR_OPTION_NAME] = { | |
1467 | .type = NLA_STRING, | |
1468 | .len = TEAM_STRING_MAX_LEN, | |
1469 | }, | |
1470 | [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, | |
1471 | [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, | |
2615598f | 1472 | [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, |
3d249d4c JP |
1473 | }; |
1474 | ||
1475 | static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) | |
1476 | { | |
1477 | struct sk_buff *msg; | |
1478 | void *hdr; | |
1479 | int err; | |
1480 | ||
1481 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1482 | if (!msg) | |
1483 | return -ENOMEM; | |
1484 | ||
1485 | hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, | |
1486 | &team_nl_family, 0, TEAM_CMD_NOOP); | |
1487 | if (IS_ERR(hdr)) { | |
1488 | err = PTR_ERR(hdr); | |
1489 | goto err_msg_put; | |
1490 | } | |
1491 | ||
1492 | genlmsg_end(msg, hdr); | |
1493 | ||
1494 | return genlmsg_unicast(genl_info_net(info), msg, info->snd_pid); | |
1495 | ||
1496 | err_msg_put: | |
1497 | nlmsg_free(msg); | |
1498 | ||
1499 | return err; | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * Netlink cmd functions should be locked by following two functions. | |
8c0713a5 | 1504 | * Since dev gets held here, that ensures dev won't disappear in between. |
3d249d4c JP |
1505 | */ |
1506 | static struct team *team_nl_team_get(struct genl_info *info) | |
1507 | { | |
1508 | struct net *net = genl_info_net(info); | |
1509 | int ifindex; | |
1510 | struct net_device *dev; | |
1511 | struct team *team; | |
1512 | ||
1513 | if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) | |
1514 | return NULL; | |
1515 | ||
1516 | ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); | |
8c0713a5 | 1517 | dev = dev_get_by_index(net, ifindex); |
3d249d4c | 1518 | if (!dev || dev->netdev_ops != &team_netdev_ops) { |
8c0713a5 JP |
1519 | if (dev) |
1520 | dev_put(dev); | |
3d249d4c JP |
1521 | return NULL; |
1522 | } | |
1523 | ||
1524 | team = netdev_priv(dev); | |
61dc3461 | 1525 | mutex_lock(&team->lock); |
3d249d4c JP |
1526 | return team; |
1527 | } | |
1528 | ||
1529 | static void team_nl_team_put(struct team *team) | |
1530 | { | |
61dc3461 | 1531 | mutex_unlock(&team->lock); |
8c0713a5 | 1532 | dev_put(team->dev); |
3d249d4c JP |
1533 | } |
1534 | ||
1535 | static int team_nl_send_generic(struct genl_info *info, struct team *team, | |
1536 | int (*fill_func)(struct sk_buff *skb, | |
1537 | struct genl_info *info, | |
1538 | int flags, struct team *team)) | |
1539 | { | |
1540 | struct sk_buff *skb; | |
1541 | int err; | |
1542 | ||
1543 | skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1544 | if (!skb) | |
1545 | return -ENOMEM; | |
1546 | ||
1547 | err = fill_func(skb, info, NLM_F_ACK, team); | |
1548 | if (err < 0) | |
1549 | goto err_fill; | |
1550 | ||
1551 | err = genlmsg_unicast(genl_info_net(info), skb, info->snd_pid); | |
1552 | return err; | |
1553 | ||
1554 | err_fill: | |
1555 | nlmsg_free(skb); | |
1556 | return err; | |
1557 | } | |
1558 | ||
9b00cf2d JP |
1559 | typedef int team_nl_send_func_t(struct sk_buff *skb, |
1560 | struct team *team, u32 pid); | |
1561 | ||
1562 | static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 pid) | |
1563 | { | |
1564 | return genlmsg_unicast(dev_net(team->dev), skb, pid); | |
1565 | } | |
1566 | ||
01048d9a JP |
1567 | static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team, |
1568 | struct team_option_inst *opt_inst) | |
1569 | { | |
1570 | struct nlattr *option_item; | |
1571 | struct team_option *option = opt_inst->option; | |
9b00cf2d | 1572 | struct team_option_inst_info *opt_inst_info = &opt_inst->info; |
01048d9a JP |
1573 | struct team_gsetter_ctx ctx; |
1574 | int err; | |
1575 | ||
9b00cf2d JP |
1576 | ctx.info = opt_inst_info; |
1577 | err = team_option_get(team, opt_inst, &ctx); | |
1578 | if (err) | |
1579 | return err; | |
1580 | ||
01048d9a JP |
1581 | option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION); |
1582 | if (!option_item) | |
9b00cf2d | 1583 | return -EMSGSIZE; |
01048d9a | 1584 | |
9b00cf2d JP |
1585 | if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) |
1586 | goto nest_cancel; | |
01048d9a JP |
1587 | if (opt_inst_info->port && |
1588 | nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, | |
1589 | opt_inst_info->port->dev->ifindex)) | |
9b00cf2d | 1590 | goto nest_cancel; |
01048d9a JP |
1591 | if (opt_inst->option->array_size && |
1592 | nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX, | |
1593 | opt_inst_info->array_index)) | |
9b00cf2d | 1594 | goto nest_cancel; |
01048d9a JP |
1595 | |
1596 | switch (option->type) { | |
1597 | case TEAM_OPTION_TYPE_U32: | |
1598 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) | |
9b00cf2d | 1599 | goto nest_cancel; |
01048d9a | 1600 | if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val)) |
9b00cf2d | 1601 | goto nest_cancel; |
01048d9a JP |
1602 | break; |
1603 | case TEAM_OPTION_TYPE_STRING: | |
1604 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) | |
9b00cf2d | 1605 | goto nest_cancel; |
01048d9a JP |
1606 | if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, |
1607 | ctx.data.str_val)) | |
9b00cf2d | 1608 | goto nest_cancel; |
01048d9a JP |
1609 | break; |
1610 | case TEAM_OPTION_TYPE_BINARY: | |
1611 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) | |
9b00cf2d | 1612 | goto nest_cancel; |
01048d9a JP |
1613 | if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len, |
1614 | ctx.data.bin_val.ptr)) | |
9b00cf2d | 1615 | goto nest_cancel; |
01048d9a JP |
1616 | break; |
1617 | case TEAM_OPTION_TYPE_BOOL: | |
1618 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) | |
9b00cf2d | 1619 | goto nest_cancel; |
01048d9a JP |
1620 | if (ctx.data.bool_val && |
1621 | nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) | |
9b00cf2d | 1622 | goto nest_cancel; |
01048d9a JP |
1623 | break; |
1624 | default: | |
1625 | BUG(); | |
1626 | } | |
9b00cf2d JP |
1627 | if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) |
1628 | goto nest_cancel; | |
1629 | if (opt_inst->changed) { | |
1630 | if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) | |
1631 | goto nest_cancel; | |
1632 | opt_inst->changed = false; | |
1633 | } | |
01048d9a JP |
1634 | nla_nest_end(skb, option_item); |
1635 | return 0; | |
1636 | ||
9b00cf2d JP |
1637 | nest_cancel: |
1638 | nla_nest_cancel(skb, option_item); | |
1639 | return -EMSGSIZE; | |
1640 | } | |
1641 | ||
1642 | static int __send_and_alloc_skb(struct sk_buff **pskb, | |
1643 | struct team *team, u32 pid, | |
1644 | team_nl_send_func_t *send_func) | |
1645 | { | |
1646 | int err; | |
1647 | ||
1648 | if (*pskb) { | |
1649 | err = send_func(*pskb, team, pid); | |
1650 | if (err) | |
1651 | return err; | |
1652 | } | |
1653 | *pskb = genlmsg_new(NLMSG_DEFAULT_SIZE - GENL_HDRLEN, GFP_KERNEL); | |
1654 | if (!*pskb) | |
1655 | return -ENOMEM; | |
1656 | return 0; | |
01048d9a JP |
1657 | } |
1658 | ||
9b00cf2d JP |
1659 | static int team_nl_send_options_get(struct team *team, u32 pid, u32 seq, |
1660 | int flags, team_nl_send_func_t *send_func, | |
01048d9a | 1661 | struct list_head *sel_opt_inst_list) |
3d249d4c JP |
1662 | { |
1663 | struct nlattr *option_list; | |
9b00cf2d | 1664 | struct nlmsghdr *nlh; |
3d249d4c | 1665 | void *hdr; |
80f7c668 JP |
1666 | struct team_option_inst *opt_inst; |
1667 | int err; | |
9b00cf2d JP |
1668 | struct sk_buff *skb = NULL; |
1669 | bool incomplete; | |
1670 | int i; | |
3d249d4c | 1671 | |
9b00cf2d JP |
1672 | opt_inst = list_first_entry(sel_opt_inst_list, |
1673 | struct team_option_inst, tmp_list); | |
1674 | ||
1675 | start_again: | |
1676 | err = __send_and_alloc_skb(&skb, team, pid, send_func); | |
1677 | if (err) | |
1678 | return err; | |
1679 | ||
1680 | hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags | NLM_F_MULTI, | |
3d249d4c JP |
1681 | TEAM_CMD_OPTIONS_GET); |
1682 | if (IS_ERR(hdr)) | |
1683 | return PTR_ERR(hdr); | |
1684 | ||
86ebb02d DM |
1685 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
1686 | goto nla_put_failure; | |
3d249d4c JP |
1687 | option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION); |
1688 | if (!option_list) | |
75db986a | 1689 | goto nla_put_failure; |
3d249d4c | 1690 | |
9b00cf2d JP |
1691 | i = 0; |
1692 | incomplete = false; | |
1693 | list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { | |
01048d9a | 1694 | err = team_nl_fill_one_option_get(skb, team, opt_inst); |
9b00cf2d JP |
1695 | if (err) { |
1696 | if (err == -EMSGSIZE) { | |
1697 | if (!i) | |
1698 | goto errout; | |
1699 | incomplete = true; | |
1700 | break; | |
1701 | } | |
01048d9a | 1702 | goto errout; |
9b00cf2d JP |
1703 | } |
1704 | i++; | |
3d249d4c JP |
1705 | } |
1706 | ||
1707 | nla_nest_end(skb, option_list); | |
9b00cf2d JP |
1708 | genlmsg_end(skb, hdr); |
1709 | if (incomplete) | |
1710 | goto start_again; | |
1711 | ||
1712 | send_done: | |
1713 | nlh = nlmsg_put(skb, pid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
1714 | if (!nlh) { | |
1715 | err = __send_and_alloc_skb(&skb, team, pid, send_func); | |
1716 | if (err) | |
1717 | goto errout; | |
1718 | goto send_done; | |
1719 | } | |
1720 | ||
1721 | return send_func(skb, team, pid); | |
3d249d4c JP |
1722 | |
1723 | nla_put_failure: | |
80f7c668 JP |
1724 | err = -EMSGSIZE; |
1725 | errout: | |
3d249d4c | 1726 | genlmsg_cancel(skb, hdr); |
9b00cf2d | 1727 | nlmsg_free(skb); |
80f7c668 | 1728 | return err; |
3d249d4c JP |
1729 | } |
1730 | ||
3d249d4c JP |
1731 | static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) |
1732 | { | |
1733 | struct team *team; | |
9b00cf2d | 1734 | struct team_option_inst *opt_inst; |
3d249d4c | 1735 | int err; |
9b00cf2d | 1736 | LIST_HEAD(sel_opt_inst_list); |
3d249d4c JP |
1737 | |
1738 | team = team_nl_team_get(info); | |
1739 | if (!team) | |
1740 | return -EINVAL; | |
1741 | ||
9b00cf2d JP |
1742 | list_for_each_entry(opt_inst, &team->option_inst_list, list) |
1743 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
1744 | err = team_nl_send_options_get(team, info->snd_pid, info->snd_seq, | |
1745 | NLM_F_ACK, team_nl_send_unicast, | |
1746 | &sel_opt_inst_list); | |
3d249d4c JP |
1747 | |
1748 | team_nl_team_put(team); | |
1749 | ||
1750 | return err; | |
1751 | } | |
1752 | ||
1753 | static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) | |
1754 | { | |
1755 | struct team *team; | |
1756 | int err = 0; | |
1757 | int i; | |
1758 | struct nlattr *nl_option; | |
1759 | ||
1760 | team = team_nl_team_get(info); | |
1761 | if (!team) | |
1762 | return -EINVAL; | |
1763 | ||
1764 | err = -EINVAL; | |
1765 | if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { | |
1766 | err = -EINVAL; | |
1767 | goto team_put; | |
1768 | } | |
1769 | ||
1770 | nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { | |
80f7c668 | 1771 | struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; |
b1303326 | 1772 | struct nlattr *attr; |
14f066ba | 1773 | struct nlattr *attr_data; |
3d249d4c | 1774 | enum team_option_type opt_type; |
80f7c668 | 1775 | int opt_port_ifindex = 0; /* != 0 for per-port options */ |
b1303326 JP |
1776 | u32 opt_array_index = 0; |
1777 | bool opt_is_array = false; | |
80f7c668 | 1778 | struct team_option_inst *opt_inst; |
3d249d4c JP |
1779 | char *opt_name; |
1780 | bool opt_found = false; | |
1781 | ||
1782 | if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { | |
1783 | err = -EINVAL; | |
1784 | goto team_put; | |
1785 | } | |
80f7c668 | 1786 | err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX, |
3d249d4c JP |
1787 | nl_option, team_nl_option_policy); |
1788 | if (err) | |
1789 | goto team_put; | |
80f7c668 | 1790 | if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || |
14f066ba | 1791 | !opt_attrs[TEAM_ATTR_OPTION_TYPE]) { |
3d249d4c JP |
1792 | err = -EINVAL; |
1793 | goto team_put; | |
1794 | } | |
80f7c668 | 1795 | switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { |
3d249d4c JP |
1796 | case NLA_U32: |
1797 | opt_type = TEAM_OPTION_TYPE_U32; | |
1798 | break; | |
1799 | case NLA_STRING: | |
1800 | opt_type = TEAM_OPTION_TYPE_STRING; | |
1801 | break; | |
2615598f JP |
1802 | case NLA_BINARY: |
1803 | opt_type = TEAM_OPTION_TYPE_BINARY; | |
1804 | break; | |
14f066ba JP |
1805 | case NLA_FLAG: |
1806 | opt_type = TEAM_OPTION_TYPE_BOOL; | |
1807 | break; | |
3d249d4c JP |
1808 | default: |
1809 | goto team_put; | |
1810 | } | |
1811 | ||
14f066ba JP |
1812 | attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; |
1813 | if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { | |
1814 | err = -EINVAL; | |
1815 | goto team_put; | |
1816 | } | |
1817 | ||
80f7c668 | 1818 | opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); |
b1303326 JP |
1819 | attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; |
1820 | if (attr) | |
1821 | opt_port_ifindex = nla_get_u32(attr); | |
1822 | ||
1823 | attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX]; | |
1824 | if (attr) { | |
1825 | opt_is_array = true; | |
1826 | opt_array_index = nla_get_u32(attr); | |
1827 | } | |
80f7c668 JP |
1828 | |
1829 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
1830 | struct team_option *option = opt_inst->option; | |
80f7c668 | 1831 | struct team_gsetter_ctx ctx; |
85d59a87 | 1832 | struct team_option_inst_info *opt_inst_info; |
80f7c668 | 1833 | int tmp_ifindex; |
3d249d4c | 1834 | |
85d59a87 JP |
1835 | opt_inst_info = &opt_inst->info; |
1836 | tmp_ifindex = opt_inst_info->port ? | |
1837 | opt_inst_info->port->dev->ifindex : 0; | |
3d249d4c | 1838 | if (option->type != opt_type || |
80f7c668 | 1839 | strcmp(option->name, opt_name) || |
b1303326 JP |
1840 | tmp_ifindex != opt_port_ifindex || |
1841 | (option->array_size && !opt_is_array) || | |
85d59a87 | 1842 | opt_inst_info->array_index != opt_array_index) |
3d249d4c JP |
1843 | continue; |
1844 | opt_found = true; | |
85d59a87 | 1845 | ctx.info = opt_inst_info; |
3d249d4c JP |
1846 | switch (opt_type) { |
1847 | case TEAM_OPTION_TYPE_U32: | |
14f066ba | 1848 | ctx.data.u32_val = nla_get_u32(attr_data); |
3d249d4c JP |
1849 | break; |
1850 | case TEAM_OPTION_TYPE_STRING: | |
14f066ba | 1851 | if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { |
2615598f JP |
1852 | err = -EINVAL; |
1853 | goto team_put; | |
1854 | } | |
14f066ba | 1855 | ctx.data.str_val = nla_data(attr_data); |
3d249d4c | 1856 | break; |
2615598f | 1857 | case TEAM_OPTION_TYPE_BINARY: |
14f066ba JP |
1858 | ctx.data.bin_val.len = nla_len(attr_data); |
1859 | ctx.data.bin_val.ptr = nla_data(attr_data); | |
1860 | break; | |
1861 | case TEAM_OPTION_TYPE_BOOL: | |
1862 | ctx.data.bool_val = attr_data ? true : false; | |
2615598f | 1863 | break; |
3d249d4c JP |
1864 | default: |
1865 | BUG(); | |
1866 | } | |
80f7c668 | 1867 | err = team_option_set(team, opt_inst, &ctx); |
3d249d4c JP |
1868 | if (err) |
1869 | goto team_put; | |
1870 | } | |
1871 | if (!opt_found) { | |
1872 | err = -ENOENT; | |
1873 | goto team_put; | |
1874 | } | |
1875 | } | |
1876 | ||
1877 | team_put: | |
1878 | team_nl_team_put(team); | |
1879 | ||
1880 | return err; | |
1881 | } | |
1882 | ||
b82b9183 JP |
1883 | static int team_nl_fill_port_list_get(struct sk_buff *skb, |
1884 | u32 pid, u32 seq, int flags, | |
1885 | struct team *team, | |
1886 | bool fillall) | |
3d249d4c JP |
1887 | { |
1888 | struct nlattr *port_list; | |
1889 | void *hdr; | |
1890 | struct team_port *port; | |
1891 | ||
1892 | hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, | |
1893 | TEAM_CMD_PORT_LIST_GET); | |
1894 | if (IS_ERR(hdr)) | |
1895 | return PTR_ERR(hdr); | |
1896 | ||
86ebb02d DM |
1897 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
1898 | goto nla_put_failure; | |
3d249d4c JP |
1899 | port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT); |
1900 | if (!port_list) | |
3221c646 | 1901 | goto nla_put_failure; |
3d249d4c JP |
1902 | |
1903 | list_for_each_entry(port, &team->port_list, list) { | |
1904 | struct nlattr *port_item; | |
1905 | ||
b82b9183 JP |
1906 | /* Include only changed ports if fill all mode is not on */ |
1907 | if (!fillall && !port->changed) | |
1908 | continue; | |
3d249d4c JP |
1909 | port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); |
1910 | if (!port_item) | |
1911 | goto nla_put_failure; | |
86ebb02d DM |
1912 | if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) |
1913 | goto nla_put_failure; | |
b82b9183 | 1914 | if (port->changed) { |
86ebb02d DM |
1915 | if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) |
1916 | goto nla_put_failure; | |
b82b9183 JP |
1917 | port->changed = false; |
1918 | } | |
86ebb02d DM |
1919 | if ((port->removed && |
1920 | nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || | |
71472ec1 | 1921 | (port->state.linkup && |
86ebb02d | 1922 | nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || |
71472ec1 JP |
1923 | nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || |
1924 | nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) | |
86ebb02d | 1925 | goto nla_put_failure; |
3d249d4c JP |
1926 | nla_nest_end(skb, port_item); |
1927 | } | |
1928 | ||
1929 | nla_nest_end(skb, port_list); | |
1930 | return genlmsg_end(skb, hdr); | |
1931 | ||
1932 | nla_put_failure: | |
1933 | genlmsg_cancel(skb, hdr); | |
1934 | return -EMSGSIZE; | |
1935 | } | |
1936 | ||
b82b9183 JP |
1937 | static int team_nl_fill_port_list_get_all(struct sk_buff *skb, |
1938 | struct genl_info *info, int flags, | |
1939 | struct team *team) | |
3d249d4c | 1940 | { |
b82b9183 JP |
1941 | return team_nl_fill_port_list_get(skb, info->snd_pid, |
1942 | info->snd_seq, NLM_F_ACK, | |
1943 | team, true); | |
3d249d4c JP |
1944 | } |
1945 | ||
1946 | static int team_nl_cmd_port_list_get(struct sk_buff *skb, | |
1947 | struct genl_info *info) | |
1948 | { | |
1949 | struct team *team; | |
1950 | int err; | |
1951 | ||
1952 | team = team_nl_team_get(info); | |
1953 | if (!team) | |
1954 | return -EINVAL; | |
1955 | ||
b82b9183 | 1956 | err = team_nl_send_generic(info, team, team_nl_fill_port_list_get_all); |
3d249d4c JP |
1957 | |
1958 | team_nl_team_put(team); | |
1959 | ||
1960 | return err; | |
1961 | } | |
1962 | ||
1963 | static struct genl_ops team_nl_ops[] = { | |
1964 | { | |
1965 | .cmd = TEAM_CMD_NOOP, | |
1966 | .doit = team_nl_cmd_noop, | |
1967 | .policy = team_nl_policy, | |
1968 | }, | |
1969 | { | |
1970 | .cmd = TEAM_CMD_OPTIONS_SET, | |
1971 | .doit = team_nl_cmd_options_set, | |
1972 | .policy = team_nl_policy, | |
1973 | .flags = GENL_ADMIN_PERM, | |
1974 | }, | |
1975 | { | |
1976 | .cmd = TEAM_CMD_OPTIONS_GET, | |
1977 | .doit = team_nl_cmd_options_get, | |
1978 | .policy = team_nl_policy, | |
1979 | .flags = GENL_ADMIN_PERM, | |
1980 | }, | |
1981 | { | |
1982 | .cmd = TEAM_CMD_PORT_LIST_GET, | |
1983 | .doit = team_nl_cmd_port_list_get, | |
1984 | .policy = team_nl_policy, | |
1985 | .flags = GENL_ADMIN_PERM, | |
1986 | }, | |
1987 | }; | |
1988 | ||
1989 | static struct genl_multicast_group team_change_event_mcgrp = { | |
1990 | .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, | |
1991 | }; | |
1992 | ||
9b00cf2d JP |
1993 | static int team_nl_send_multicast(struct sk_buff *skb, |
1994 | struct team *team, u32 pid) | |
1995 | { | |
1996 | return genlmsg_multicast_netns(dev_net(team->dev), skb, 0, | |
1997 | team_change_event_mcgrp.id, GFP_KERNEL); | |
1998 | } | |
1999 | ||
01048d9a JP |
2000 | static int team_nl_send_event_options_get(struct team *team, |
2001 | struct list_head *sel_opt_inst_list) | |
3d249d4c | 2002 | { |
9b00cf2d JP |
2003 | return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast, |
2004 | sel_opt_inst_list); | |
3d249d4c JP |
2005 | } |
2006 | ||
b82b9183 | 2007 | static int team_nl_send_event_port_list_get(struct team *team) |
3d249d4c JP |
2008 | { |
2009 | struct sk_buff *skb; | |
2010 | int err; | |
b82b9183 | 2011 | struct net *net = dev_net(team->dev); |
3d249d4c JP |
2012 | |
2013 | skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
2014 | if (!skb) | |
2015 | return -ENOMEM; | |
2016 | ||
b82b9183 | 2017 | err = team_nl_fill_port_list_get(skb, 0, 0, 0, team, false); |
3d249d4c JP |
2018 | if (err < 0) |
2019 | goto err_fill; | |
2020 | ||
2021 | err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, | |
2022 | GFP_KERNEL); | |
2023 | return err; | |
2024 | ||
2025 | err_fill: | |
2026 | nlmsg_free(skb); | |
2027 | return err; | |
2028 | } | |
2029 | ||
2030 | static int team_nl_init(void) | |
2031 | { | |
2032 | int err; | |
2033 | ||
2034 | err = genl_register_family_with_ops(&team_nl_family, team_nl_ops, | |
2035 | ARRAY_SIZE(team_nl_ops)); | |
2036 | if (err) | |
2037 | return err; | |
2038 | ||
2039 | err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp); | |
2040 | if (err) | |
2041 | goto err_change_event_grp_reg; | |
2042 | ||
2043 | return 0; | |
2044 | ||
2045 | err_change_event_grp_reg: | |
2046 | genl_unregister_family(&team_nl_family); | |
2047 | ||
2048 | return err; | |
2049 | } | |
2050 | ||
2051 | static void team_nl_fini(void) | |
2052 | { | |
2053 | genl_unregister_family(&team_nl_family); | |
2054 | } | |
2055 | ||
2056 | ||
2057 | /****************** | |
2058 | * Change checkers | |
2059 | ******************/ | |
2060 | ||
b82b9183 | 2061 | static void __team_options_change_check(struct team *team) |
3d249d4c JP |
2062 | { |
2063 | int err; | |
01048d9a JP |
2064 | struct team_option_inst *opt_inst; |
2065 | LIST_HEAD(sel_opt_inst_list); | |
3d249d4c | 2066 | |
01048d9a JP |
2067 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
2068 | if (opt_inst->changed) | |
2069 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
2070 | } | |
2071 | err = team_nl_send_event_options_get(team, &sel_opt_inst_list); | |
3d249d4c | 2072 | if (err) |
9b00cf2d JP |
2073 | netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n", |
2074 | err); | |
3d249d4c JP |
2075 | } |
2076 | ||
01048d9a JP |
2077 | static void __team_option_inst_change(struct team *team, |
2078 | struct team_option_inst *sel_opt_inst) | |
2079 | { | |
2080 | int err; | |
2081 | LIST_HEAD(sel_opt_inst_list); | |
2082 | ||
2083 | sel_opt_inst->changed = true; | |
2084 | list_add(&sel_opt_inst->tmp_list, &sel_opt_inst_list); | |
2085 | err = team_nl_send_event_options_get(team, &sel_opt_inst_list); | |
2086 | if (err) | |
9b00cf2d JP |
2087 | netdev_warn(team->dev, "Failed to send option change via netlink (err %d)\n", |
2088 | err); | |
01048d9a JP |
2089 | } |
2090 | ||
3d249d4c JP |
2091 | /* rtnl lock is held */ |
2092 | static void __team_port_change_check(struct team_port *port, bool linkup) | |
2093 | { | |
2094 | int err; | |
2095 | ||
71472ec1 | 2096 | if (!port->removed && port->state.linkup == linkup) |
3d249d4c JP |
2097 | return; |
2098 | ||
b82b9183 | 2099 | port->changed = true; |
71472ec1 JP |
2100 | port->state.linkup = linkup; |
2101 | team_refresh_port_linkup(port); | |
3d249d4c JP |
2102 | if (linkup) { |
2103 | struct ethtool_cmd ecmd; | |
2104 | ||
2105 | err = __ethtool_get_settings(port->dev, &ecmd); | |
2106 | if (!err) { | |
71472ec1 JP |
2107 | port->state.speed = ethtool_cmd_speed(&ecmd); |
2108 | port->state.duplex = ecmd.duplex; | |
3d249d4c JP |
2109 | goto send_event; |
2110 | } | |
2111 | } | |
71472ec1 JP |
2112 | port->state.speed = 0; |
2113 | port->state.duplex = 0; | |
3d249d4c JP |
2114 | |
2115 | send_event: | |
b82b9183 | 2116 | err = team_nl_send_event_port_list_get(port->team); |
3d249d4c JP |
2117 | if (err) |
2118 | netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n", | |
2119 | port->dev->name); | |
2120 | ||
2121 | } | |
2122 | ||
2123 | static void team_port_change_check(struct team_port *port, bool linkup) | |
2124 | { | |
2125 | struct team *team = port->team; | |
2126 | ||
61dc3461 | 2127 | mutex_lock(&team->lock); |
3d249d4c | 2128 | __team_port_change_check(port, linkup); |
61dc3461 | 2129 | mutex_unlock(&team->lock); |
3d249d4c JP |
2130 | } |
2131 | ||
0f1aad2b | 2132 | |
3d249d4c JP |
2133 | /************************************ |
2134 | * Net device notifier event handler | |
2135 | ************************************/ | |
2136 | ||
2137 | static int team_device_event(struct notifier_block *unused, | |
2138 | unsigned long event, void *ptr) | |
2139 | { | |
2140 | struct net_device *dev = (struct net_device *) ptr; | |
2141 | struct team_port *port; | |
2142 | ||
2143 | port = team_port_get_rtnl(dev); | |
2144 | if (!port) | |
2145 | return NOTIFY_DONE; | |
2146 | ||
2147 | switch (event) { | |
2148 | case NETDEV_UP: | |
2149 | if (netif_carrier_ok(dev)) | |
2150 | team_port_change_check(port, true); | |
2151 | case NETDEV_DOWN: | |
2152 | team_port_change_check(port, false); | |
2153 | case NETDEV_CHANGE: | |
2154 | if (netif_running(port->dev)) | |
2155 | team_port_change_check(port, | |
2156 | !!netif_carrier_ok(port->dev)); | |
2157 | break; | |
2158 | case NETDEV_UNREGISTER: | |
2159 | team_del_slave(port->team->dev, dev); | |
2160 | break; | |
2161 | case NETDEV_FEAT_CHANGE: | |
2162 | team_compute_features(port->team); | |
2163 | break; | |
2164 | case NETDEV_CHANGEMTU: | |
2165 | /* Forbid to change mtu of underlaying device */ | |
2166 | return NOTIFY_BAD; | |
2167 | case NETDEV_PRE_TYPE_CHANGE: | |
2168 | /* Forbid to change type of underlaying device */ | |
2169 | return NOTIFY_BAD; | |
2170 | } | |
2171 | return NOTIFY_DONE; | |
2172 | } | |
2173 | ||
2174 | static struct notifier_block team_notifier_block __read_mostly = { | |
2175 | .notifier_call = team_device_event, | |
2176 | }; | |
2177 | ||
2178 | ||
2179 | /*********************** | |
2180 | * Module init and exit | |
2181 | ***********************/ | |
2182 | ||
2183 | static int __init team_module_init(void) | |
2184 | { | |
2185 | int err; | |
2186 | ||
2187 | register_netdevice_notifier(&team_notifier_block); | |
2188 | ||
2189 | err = rtnl_link_register(&team_link_ops); | |
2190 | if (err) | |
2191 | goto err_rtnl_reg; | |
2192 | ||
2193 | err = team_nl_init(); | |
2194 | if (err) | |
2195 | goto err_nl_init; | |
2196 | ||
2197 | return 0; | |
2198 | ||
2199 | err_nl_init: | |
2200 | rtnl_link_unregister(&team_link_ops); | |
2201 | ||
2202 | err_rtnl_reg: | |
2203 | unregister_netdevice_notifier(&team_notifier_block); | |
2204 | ||
2205 | return err; | |
2206 | } | |
2207 | ||
2208 | static void __exit team_module_exit(void) | |
2209 | { | |
2210 | team_nl_fini(); | |
2211 | rtnl_link_unregister(&team_link_ops); | |
2212 | unregister_netdevice_notifier(&team_notifier_block); | |
2213 | } | |
2214 | ||
2215 | module_init(team_module_init); | |
2216 | module_exit(team_module_exit); | |
2217 | ||
2218 | MODULE_LICENSE("GPL v2"); | |
2219 | MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); | |
2220 | MODULE_DESCRIPTION("Ethernet team device driver"); | |
2221 | MODULE_ALIAS_RTNL_LINK(DRV_NAME); |