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