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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 | ||
68 | int team_port_set_orig_mac(struct team_port *port) | |
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 | ||
79 | ||
80 | /******************* | |
81 | * Options handling | |
82 | *******************/ | |
83 | ||
80f7c668 JP |
84 | struct team_option_inst { /* One for each option instance */ |
85 | struct list_head list; | |
86 | struct team_option *option; | |
87 | struct team_port *port; /* != NULL if per-port */ | |
88 | bool changed; | |
89 | bool removed; | |
90 | }; | |
91 | ||
92 | static struct team_option *__team_find_option(struct team *team, | |
93 | const char *opt_name) | |
358b8382 JP |
94 | { |
95 | struct team_option *option; | |
96 | ||
97 | list_for_each_entry(option, &team->option_list, list) { | |
98 | if (strcmp(option->name, opt_name) == 0) | |
99 | return option; | |
100 | } | |
101 | return NULL; | |
102 | } | |
103 | ||
80f7c668 JP |
104 | static int __team_option_inst_add(struct team *team, struct team_option *option, |
105 | struct team_port *port) | |
106 | { | |
107 | struct team_option_inst *opt_inst; | |
108 | ||
109 | opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL); | |
110 | if (!opt_inst) | |
111 | return -ENOMEM; | |
112 | opt_inst->option = option; | |
113 | opt_inst->port = port; | |
114 | opt_inst->changed = true; | |
115 | opt_inst->removed = false; | |
116 | list_add_tail(&opt_inst->list, &team->option_inst_list); | |
117 | return 0; | |
118 | } | |
119 | ||
120 | static void __team_option_inst_del(struct team_option_inst *opt_inst) | |
121 | { | |
122 | list_del(&opt_inst->list); | |
123 | kfree(opt_inst); | |
124 | } | |
125 | ||
126 | static void __team_option_inst_del_option(struct team *team, | |
127 | struct team_option *option) | |
128 | { | |
129 | struct team_option_inst *opt_inst, *tmp; | |
130 | ||
131 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
132 | if (opt_inst->option == option) | |
133 | __team_option_inst_del(opt_inst); | |
134 | } | |
135 | } | |
136 | ||
137 | static int __team_option_inst_add_option(struct team *team, | |
138 | struct team_option *option) | |
139 | { | |
140 | struct team_port *port; | |
141 | int err; | |
142 | ||
143 | if (!option->per_port) | |
144 | return __team_option_inst_add(team, option, 0); | |
145 | ||
146 | list_for_each_entry(port, &team->port_list, list) { | |
147 | err = __team_option_inst_add(team, option, port); | |
148 | if (err) | |
149 | goto inst_del_option; | |
150 | } | |
151 | return 0; | |
152 | ||
153 | inst_del_option: | |
154 | __team_option_inst_del_option(team, option); | |
155 | return err; | |
156 | } | |
157 | ||
158 | static void __team_option_inst_mark_removed_option(struct team *team, | |
159 | struct team_option *option) | |
160 | { | |
161 | struct team_option_inst *opt_inst; | |
162 | ||
163 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
164 | if (opt_inst->option == option) { | |
165 | opt_inst->changed = true; | |
166 | opt_inst->removed = true; | |
167 | } | |
168 | } | |
169 | } | |
170 | ||
171 | static void __team_option_inst_del_port(struct team *team, | |
172 | struct team_port *port) | |
173 | { | |
174 | struct team_option_inst *opt_inst, *tmp; | |
175 | ||
176 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
177 | if (opt_inst->option->per_port && | |
178 | opt_inst->port == port) | |
179 | __team_option_inst_del(opt_inst); | |
180 | } | |
181 | } | |
182 | ||
183 | static int __team_option_inst_add_port(struct team *team, | |
184 | struct team_port *port) | |
185 | { | |
186 | struct team_option *option; | |
187 | int err; | |
188 | ||
189 | list_for_each_entry(option, &team->option_list, list) { | |
190 | if (!option->per_port) | |
191 | continue; | |
192 | err = __team_option_inst_add(team, option, port); | |
193 | if (err) | |
194 | goto inst_del_port; | |
195 | } | |
196 | return 0; | |
197 | ||
198 | inst_del_port: | |
199 | __team_option_inst_del_port(team, port); | |
200 | return err; | |
201 | } | |
202 | ||
203 | static void __team_option_inst_mark_removed_port(struct team *team, | |
204 | struct team_port *port) | |
205 | { | |
206 | struct team_option_inst *opt_inst; | |
207 | ||
208 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
209 | if (opt_inst->port == port) { | |
210 | opt_inst->changed = true; | |
211 | opt_inst->removed = true; | |
212 | } | |
213 | } | |
214 | } | |
215 | ||
216 | static int __team_options_register(struct team *team, | |
217 | const struct team_option *option, | |
218 | size_t option_count) | |
3d249d4c JP |
219 | { |
220 | int i; | |
2bba19ff | 221 | struct team_option **dst_opts; |
358b8382 | 222 | int err; |
3d249d4c | 223 | |
2bba19ff JP |
224 | dst_opts = kzalloc(sizeof(struct team_option *) * option_count, |
225 | GFP_KERNEL); | |
226 | if (!dst_opts) | |
227 | return -ENOMEM; | |
358b8382 | 228 | for (i = 0; i < option_count; i++, option++) { |
358b8382 JP |
229 | if (__team_find_option(team, option->name)) { |
230 | err = -EEXIST; | |
80f7c668 | 231 | goto alloc_rollback; |
358b8382 | 232 | } |
f8a15af0 JP |
233 | dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); |
234 | if (!dst_opts[i]) { | |
358b8382 | 235 | err = -ENOMEM; |
80f7c668 | 236 | goto alloc_rollback; |
358b8382 | 237 | } |
358b8382 JP |
238 | } |
239 | ||
b82b9183 | 240 | for (i = 0; i < option_count; i++) { |
80f7c668 JP |
241 | err = __team_option_inst_add_option(team, dst_opts[i]); |
242 | if (err) | |
243 | goto inst_rollback; | |
358b8382 | 244 | list_add_tail(&dst_opts[i]->list, &team->option_list); |
b82b9183 | 245 | } |
358b8382 | 246 | |
2bba19ff | 247 | kfree(dst_opts); |
358b8382 JP |
248 | return 0; |
249 | ||
80f7c668 JP |
250 | inst_rollback: |
251 | for (i--; i >= 0; i--) | |
252 | __team_option_inst_del_option(team, dst_opts[i]); | |
253 | ||
254 | i = option_count - 1; | |
255 | alloc_rollback: | |
256 | for (i--; i >= 0; i--) | |
358b8382 JP |
257 | kfree(dst_opts[i]); |
258 | ||
2bba19ff | 259 | kfree(dst_opts); |
358b8382 | 260 | return err; |
3d249d4c | 261 | } |
358b8382 | 262 | |
b82b9183 JP |
263 | static void __team_options_mark_removed(struct team *team, |
264 | const struct team_option *option, | |
265 | size_t option_count) | |
266 | { | |
267 | int i; | |
268 | ||
269 | for (i = 0; i < option_count; i++, option++) { | |
270 | struct team_option *del_opt; | |
3d249d4c | 271 | |
b82b9183 | 272 | del_opt = __team_find_option(team, option->name); |
80f7c668 JP |
273 | if (del_opt) |
274 | __team_option_inst_mark_removed_option(team, del_opt); | |
b82b9183 JP |
275 | } |
276 | } | |
3d249d4c JP |
277 | |
278 | static void __team_options_unregister(struct team *team, | |
358b8382 | 279 | const struct team_option *option, |
3d249d4c JP |
280 | size_t option_count) |
281 | { | |
282 | int i; | |
283 | ||
358b8382 JP |
284 | for (i = 0; i < option_count; i++, option++) { |
285 | struct team_option *del_opt; | |
286 | ||
287 | del_opt = __team_find_option(team, option->name); | |
288 | if (del_opt) { | |
80f7c668 | 289 | __team_option_inst_del_option(team, del_opt); |
358b8382 JP |
290 | list_del(&del_opt->list); |
291 | kfree(del_opt); | |
292 | } | |
293 | } | |
3d249d4c JP |
294 | } |
295 | ||
b82b9183 JP |
296 | static void __team_options_change_check(struct team *team); |
297 | ||
298 | int team_options_register(struct team *team, | |
299 | const struct team_option *option, | |
300 | size_t option_count) | |
301 | { | |
302 | int err; | |
303 | ||
304 | err = __team_options_register(team, option, option_count); | |
305 | if (err) | |
306 | return err; | |
307 | __team_options_change_check(team); | |
308 | return 0; | |
309 | } | |
310 | EXPORT_SYMBOL(team_options_register); | |
311 | ||
358b8382 JP |
312 | void team_options_unregister(struct team *team, |
313 | const struct team_option *option, | |
3d249d4c JP |
314 | size_t option_count) |
315 | { | |
b82b9183 JP |
316 | __team_options_mark_removed(team, option, option_count); |
317 | __team_options_change_check(team); | |
3d249d4c | 318 | __team_options_unregister(team, option, option_count); |
3d249d4c JP |
319 | } |
320 | EXPORT_SYMBOL(team_options_unregister); | |
321 | ||
80f7c668 | 322 | static int team_option_port_add(struct team *team, struct team_port *port) |
3d249d4c | 323 | { |
80f7c668 JP |
324 | int err; |
325 | ||
326 | err = __team_option_inst_add_port(team, port); | |
327 | if (err) | |
328 | return err; | |
329 | __team_options_change_check(team); | |
330 | return 0; | |
3d249d4c JP |
331 | } |
332 | ||
80f7c668 JP |
333 | static void team_option_port_del(struct team *team, struct team_port *port) |
334 | { | |
335 | __team_option_inst_mark_removed_port(team, port); | |
336 | __team_options_change_check(team); | |
337 | __team_option_inst_del_port(team, port); | |
338 | } | |
339 | ||
340 | static int team_option_get(struct team *team, | |
341 | struct team_option_inst *opt_inst, | |
342 | struct team_gsetter_ctx *ctx) | |
343 | { | |
344 | return opt_inst->option->getter(team, ctx); | |
345 | } | |
346 | ||
347 | static int team_option_set(struct team *team, | |
348 | struct team_option_inst *opt_inst, | |
349 | struct team_gsetter_ctx *ctx) | |
3d249d4c JP |
350 | { |
351 | int err; | |
352 | ||
80f7c668 | 353 | err = opt_inst->option->setter(team, ctx); |
3d249d4c JP |
354 | if (err) |
355 | return err; | |
356 | ||
80f7c668 | 357 | opt_inst->changed = true; |
b82b9183 | 358 | __team_options_change_check(team); |
3d249d4c JP |
359 | return err; |
360 | } | |
361 | ||
362 | /**************** | |
363 | * Mode handling | |
364 | ****************/ | |
365 | ||
366 | static LIST_HEAD(mode_list); | |
367 | static DEFINE_SPINLOCK(mode_list_lock); | |
368 | ||
369 | static struct team_mode *__find_mode(const char *kind) | |
370 | { | |
371 | struct team_mode *mode; | |
372 | ||
373 | list_for_each_entry(mode, &mode_list, list) { | |
374 | if (strcmp(mode->kind, kind) == 0) | |
375 | return mode; | |
376 | } | |
377 | return NULL; | |
378 | } | |
379 | ||
380 | static bool is_good_mode_name(const char *name) | |
381 | { | |
382 | while (*name != '\0') { | |
383 | if (!isalpha(*name) && !isdigit(*name) && *name != '_') | |
384 | return false; | |
385 | name++; | |
386 | } | |
387 | return true; | |
388 | } | |
389 | ||
390 | int team_mode_register(struct team_mode *mode) | |
391 | { | |
392 | int err = 0; | |
393 | ||
394 | if (!is_good_mode_name(mode->kind) || | |
395 | mode->priv_size > TEAM_MODE_PRIV_SIZE) | |
396 | return -EINVAL; | |
397 | spin_lock(&mode_list_lock); | |
398 | if (__find_mode(mode->kind)) { | |
399 | err = -EEXIST; | |
400 | goto unlock; | |
401 | } | |
402 | list_add_tail(&mode->list, &mode_list); | |
403 | unlock: | |
404 | spin_unlock(&mode_list_lock); | |
405 | return err; | |
406 | } | |
407 | EXPORT_SYMBOL(team_mode_register); | |
408 | ||
409 | int team_mode_unregister(struct team_mode *mode) | |
410 | { | |
411 | spin_lock(&mode_list_lock); | |
412 | list_del_init(&mode->list); | |
413 | spin_unlock(&mode_list_lock); | |
414 | return 0; | |
415 | } | |
416 | EXPORT_SYMBOL(team_mode_unregister); | |
417 | ||
418 | static struct team_mode *team_mode_get(const char *kind) | |
419 | { | |
420 | struct team_mode *mode; | |
421 | ||
422 | spin_lock(&mode_list_lock); | |
423 | mode = __find_mode(kind); | |
424 | if (!mode) { | |
425 | spin_unlock(&mode_list_lock); | |
426 | request_module("team-mode-%s", kind); | |
427 | spin_lock(&mode_list_lock); | |
428 | mode = __find_mode(kind); | |
429 | } | |
430 | if (mode) | |
431 | if (!try_module_get(mode->owner)) | |
432 | mode = NULL; | |
433 | ||
434 | spin_unlock(&mode_list_lock); | |
435 | return mode; | |
436 | } | |
437 | ||
438 | static void team_mode_put(const struct team_mode *mode) | |
439 | { | |
440 | module_put(mode->owner); | |
441 | } | |
442 | ||
443 | static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) | |
444 | { | |
445 | dev_kfree_skb_any(skb); | |
446 | return false; | |
447 | } | |
448 | ||
449 | rx_handler_result_t team_dummy_receive(struct team *team, | |
450 | struct team_port *port, | |
451 | struct sk_buff *skb) | |
452 | { | |
453 | return RX_HANDLER_ANOTHER; | |
454 | } | |
455 | ||
456 | static void team_adjust_ops(struct team *team) | |
457 | { | |
458 | /* | |
459 | * To avoid checks in rx/tx skb paths, ensure here that non-null and | |
460 | * correct ops are always set. | |
461 | */ | |
462 | ||
463 | if (list_empty(&team->port_list) || | |
464 | !team->mode || !team->mode->ops->transmit) | |
465 | team->ops.transmit = team_dummy_transmit; | |
466 | else | |
467 | team->ops.transmit = team->mode->ops->transmit; | |
468 | ||
469 | if (list_empty(&team->port_list) || | |
470 | !team->mode || !team->mode->ops->receive) | |
471 | team->ops.receive = team_dummy_receive; | |
472 | else | |
473 | team->ops.receive = team->mode->ops->receive; | |
474 | } | |
475 | ||
476 | /* | |
477 | * We can benefit from the fact that it's ensured no port is present | |
478 | * at the time of mode change. Therefore no packets are in fly so there's no | |
479 | * need to set mode operations in any special way. | |
480 | */ | |
481 | static int __team_change_mode(struct team *team, | |
482 | const struct team_mode *new_mode) | |
483 | { | |
484 | /* Check if mode was previously set and do cleanup if so */ | |
485 | if (team->mode) { | |
486 | void (*exit_op)(struct team *team) = team->ops.exit; | |
487 | ||
488 | /* Clear ops area so no callback is called any longer */ | |
489 | memset(&team->ops, 0, sizeof(struct team_mode_ops)); | |
490 | team_adjust_ops(team); | |
491 | ||
492 | if (exit_op) | |
493 | exit_op(team); | |
494 | team_mode_put(team->mode); | |
495 | team->mode = NULL; | |
496 | /* zero private data area */ | |
497 | memset(&team->mode_priv, 0, | |
498 | sizeof(struct team) - offsetof(struct team, mode_priv)); | |
499 | } | |
500 | ||
501 | if (!new_mode) | |
502 | return 0; | |
503 | ||
504 | if (new_mode->ops->init) { | |
505 | int err; | |
506 | ||
507 | err = new_mode->ops->init(team); | |
508 | if (err) | |
509 | return err; | |
510 | } | |
511 | ||
512 | team->mode = new_mode; | |
513 | memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); | |
514 | team_adjust_ops(team); | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
519 | static int team_change_mode(struct team *team, const char *kind) | |
520 | { | |
521 | struct team_mode *new_mode; | |
522 | struct net_device *dev = team->dev; | |
523 | int err; | |
524 | ||
525 | if (!list_empty(&team->port_list)) { | |
526 | netdev_err(dev, "No ports can be present during mode change\n"); | |
527 | return -EBUSY; | |
528 | } | |
529 | ||
530 | if (team->mode && strcmp(team->mode->kind, kind) == 0) { | |
531 | netdev_err(dev, "Unable to change to the same mode the team is in\n"); | |
532 | return -EINVAL; | |
533 | } | |
534 | ||
535 | new_mode = team_mode_get(kind); | |
536 | if (!new_mode) { | |
537 | netdev_err(dev, "Mode \"%s\" not found\n", kind); | |
538 | return -EINVAL; | |
539 | } | |
540 | ||
541 | err = __team_change_mode(team, new_mode); | |
542 | if (err) { | |
543 | netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); | |
544 | team_mode_put(new_mode); | |
545 | return err; | |
546 | } | |
547 | ||
548 | netdev_info(dev, "Mode changed to \"%s\"\n", kind); | |
549 | return 0; | |
550 | } | |
551 | ||
552 | ||
553 | /************************ | |
554 | * Rx path frame handler | |
555 | ************************/ | |
556 | ||
557 | /* note: already called with rcu_read_lock */ | |
558 | static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) | |
559 | { | |
560 | struct sk_buff *skb = *pskb; | |
561 | struct team_port *port; | |
562 | struct team *team; | |
563 | rx_handler_result_t res; | |
564 | ||
565 | skb = skb_share_check(skb, GFP_ATOMIC); | |
566 | if (!skb) | |
567 | return RX_HANDLER_CONSUMED; | |
568 | ||
569 | *pskb = skb; | |
570 | ||
571 | port = team_port_get_rcu(skb->dev); | |
572 | team = port->team; | |
573 | ||
574 | res = team->ops.receive(team, port, skb); | |
575 | if (res == RX_HANDLER_ANOTHER) { | |
576 | struct team_pcpu_stats *pcpu_stats; | |
577 | ||
578 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
579 | u64_stats_update_begin(&pcpu_stats->syncp); | |
580 | pcpu_stats->rx_packets++; | |
581 | pcpu_stats->rx_bytes += skb->len; | |
582 | if (skb->pkt_type == PACKET_MULTICAST) | |
583 | pcpu_stats->rx_multicast++; | |
584 | u64_stats_update_end(&pcpu_stats->syncp); | |
585 | ||
586 | skb->dev = team->dev; | |
587 | } else { | |
588 | this_cpu_inc(team->pcpu_stats->rx_dropped); | |
589 | } | |
590 | ||
591 | return res; | |
592 | } | |
593 | ||
594 | ||
595 | /**************** | |
596 | * Port handling | |
597 | ****************/ | |
598 | ||
599 | static bool team_port_find(const struct team *team, | |
600 | const struct team_port *port) | |
601 | { | |
602 | struct team_port *cur; | |
603 | ||
604 | list_for_each_entry(cur, &team->port_list, list) | |
605 | if (cur == port) | |
606 | return true; | |
607 | return false; | |
608 | } | |
609 | ||
610 | /* | |
611 | * Add/delete port to the team port list. Write guarded by rtnl_lock. | |
612 | * Takes care of correct port->index setup (might be racy). | |
613 | */ | |
614 | static void team_port_list_add_port(struct team *team, | |
615 | struct team_port *port) | |
616 | { | |
617 | port->index = team->port_count++; | |
618 | hlist_add_head_rcu(&port->hlist, | |
619 | team_port_index_hash(team, port->index)); | |
620 | list_add_tail_rcu(&port->list, &team->port_list); | |
621 | } | |
622 | ||
623 | static void __reconstruct_port_hlist(struct team *team, int rm_index) | |
624 | { | |
625 | int i; | |
626 | struct team_port *port; | |
627 | ||
628 | for (i = rm_index + 1; i < team->port_count; i++) { | |
629 | port = team_get_port_by_index(team, i); | |
630 | hlist_del_rcu(&port->hlist); | |
631 | port->index--; | |
632 | hlist_add_head_rcu(&port->hlist, | |
633 | team_port_index_hash(team, port->index)); | |
634 | } | |
635 | } | |
636 | ||
637 | static void team_port_list_del_port(struct team *team, | |
638 | struct team_port *port) | |
639 | { | |
640 | int rm_index = port->index; | |
641 | ||
642 | hlist_del_rcu(&port->hlist); | |
643 | list_del_rcu(&port->list); | |
644 | __reconstruct_port_hlist(team, rm_index); | |
645 | team->port_count--; | |
646 | } | |
647 | ||
648 | #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \ | |
649 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ | |
650 | NETIF_F_HIGHDMA | NETIF_F_LRO) | |
651 | ||
652 | static void __team_compute_features(struct team *team) | |
653 | { | |
654 | struct team_port *port; | |
655 | u32 vlan_features = TEAM_VLAN_FEATURES; | |
656 | unsigned short max_hard_header_len = ETH_HLEN; | |
657 | ||
658 | list_for_each_entry(port, &team->port_list, list) { | |
659 | vlan_features = netdev_increment_features(vlan_features, | |
660 | port->dev->vlan_features, | |
661 | TEAM_VLAN_FEATURES); | |
662 | ||
663 | if (port->dev->hard_header_len > max_hard_header_len) | |
664 | max_hard_header_len = port->dev->hard_header_len; | |
665 | } | |
666 | ||
667 | team->dev->vlan_features = vlan_features; | |
668 | team->dev->hard_header_len = max_hard_header_len; | |
669 | ||
670 | netdev_change_features(team->dev); | |
671 | } | |
672 | ||
673 | static void team_compute_features(struct team *team) | |
674 | { | |
61dc3461 | 675 | mutex_lock(&team->lock); |
3d249d4c | 676 | __team_compute_features(team); |
61dc3461 | 677 | mutex_unlock(&team->lock); |
3d249d4c JP |
678 | } |
679 | ||
680 | static int team_port_enter(struct team *team, struct team_port *port) | |
681 | { | |
682 | int err = 0; | |
683 | ||
684 | dev_hold(team->dev); | |
685 | port->dev->priv_flags |= IFF_TEAM_PORT; | |
686 | if (team->ops.port_enter) { | |
687 | err = team->ops.port_enter(team, port); | |
688 | if (err) { | |
689 | netdev_err(team->dev, "Device %s failed to enter team mode\n", | |
690 | port->dev->name); | |
691 | goto err_port_enter; | |
692 | } | |
693 | } | |
694 | ||
695 | return 0; | |
696 | ||
697 | err_port_enter: | |
698 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
699 | dev_put(team->dev); | |
700 | ||
701 | return err; | |
702 | } | |
703 | ||
704 | static void team_port_leave(struct team *team, struct team_port *port) | |
705 | { | |
706 | if (team->ops.port_leave) | |
707 | team->ops.port_leave(team, port); | |
708 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
709 | dev_put(team->dev); | |
710 | } | |
711 | ||
712 | static void __team_port_change_check(struct team_port *port, bool linkup); | |
713 | ||
714 | static int team_port_add(struct team *team, struct net_device *port_dev) | |
715 | { | |
716 | struct net_device *dev = team->dev; | |
717 | struct team_port *port; | |
718 | char *portname = port_dev->name; | |
719 | int err; | |
720 | ||
721 | if (port_dev->flags & IFF_LOOPBACK || | |
722 | port_dev->type != ARPHRD_ETHER) { | |
723 | netdev_err(dev, "Device %s is of an unsupported type\n", | |
724 | portname); | |
725 | return -EINVAL; | |
726 | } | |
727 | ||
728 | if (team_port_exists(port_dev)) { | |
729 | netdev_err(dev, "Device %s is already a port " | |
730 | "of a team device\n", portname); | |
731 | return -EBUSY; | |
732 | } | |
733 | ||
734 | if (port_dev->flags & IFF_UP) { | |
735 | netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", | |
736 | portname); | |
737 | return -EBUSY; | |
738 | } | |
739 | ||
740 | port = kzalloc(sizeof(struct team_port), GFP_KERNEL); | |
741 | if (!port) | |
742 | return -ENOMEM; | |
743 | ||
744 | port->dev = port_dev; | |
745 | port->team = team; | |
746 | ||
747 | port->orig.mtu = port_dev->mtu; | |
748 | err = dev_set_mtu(port_dev, dev->mtu); | |
749 | if (err) { | |
750 | netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); | |
751 | goto err_set_mtu; | |
752 | } | |
753 | ||
754 | memcpy(port->orig.dev_addr, port_dev->dev_addr, ETH_ALEN); | |
755 | ||
756 | err = team_port_enter(team, port); | |
757 | if (err) { | |
758 | netdev_err(dev, "Device %s failed to enter team mode\n", | |
759 | portname); | |
760 | goto err_port_enter; | |
761 | } | |
762 | ||
763 | err = dev_open(port_dev); | |
764 | if (err) { | |
765 | netdev_dbg(dev, "Device %s opening failed\n", | |
766 | portname); | |
767 | goto err_dev_open; | |
768 | } | |
769 | ||
57459185 JP |
770 | err = vlan_vids_add_by_dev(port_dev, dev); |
771 | if (err) { | |
772 | netdev_err(dev, "Failed to add vlan ids to device %s\n", | |
773 | portname); | |
774 | goto err_vids_add; | |
775 | } | |
776 | ||
3d249d4c JP |
777 | err = netdev_set_master(port_dev, dev); |
778 | if (err) { | |
779 | netdev_err(dev, "Device %s failed to set master\n", portname); | |
780 | goto err_set_master; | |
781 | } | |
782 | ||
783 | err = netdev_rx_handler_register(port_dev, team_handle_frame, | |
784 | port); | |
785 | if (err) { | |
786 | netdev_err(dev, "Device %s failed to register rx_handler\n", | |
787 | portname); | |
788 | goto err_handler_register; | |
789 | } | |
790 | ||
80f7c668 JP |
791 | err = team_option_port_add(team, port); |
792 | if (err) { | |
793 | netdev_err(dev, "Device %s failed to add per-port options\n", | |
794 | portname); | |
795 | goto err_option_port_add; | |
796 | } | |
797 | ||
3d249d4c JP |
798 | team_port_list_add_port(team, port); |
799 | team_adjust_ops(team); | |
800 | __team_compute_features(team); | |
801 | __team_port_change_check(port, !!netif_carrier_ok(port_dev)); | |
802 | ||
803 | netdev_info(dev, "Port device %s added\n", portname); | |
804 | ||
805 | return 0; | |
806 | ||
80f7c668 JP |
807 | err_option_port_add: |
808 | netdev_rx_handler_unregister(port_dev); | |
809 | ||
3d249d4c JP |
810 | err_handler_register: |
811 | netdev_set_master(port_dev, NULL); | |
812 | ||
813 | err_set_master: | |
57459185 JP |
814 | vlan_vids_del_by_dev(port_dev, dev); |
815 | ||
816 | err_vids_add: | |
3d249d4c JP |
817 | dev_close(port_dev); |
818 | ||
819 | err_dev_open: | |
820 | team_port_leave(team, port); | |
821 | team_port_set_orig_mac(port); | |
822 | ||
823 | err_port_enter: | |
824 | dev_set_mtu(port_dev, port->orig.mtu); | |
825 | ||
826 | err_set_mtu: | |
827 | kfree(port); | |
828 | ||
829 | return err; | |
830 | } | |
831 | ||
832 | static int team_port_del(struct team *team, struct net_device *port_dev) | |
833 | { | |
834 | struct net_device *dev = team->dev; | |
835 | struct team_port *port; | |
836 | char *portname = port_dev->name; | |
837 | ||
838 | port = team_port_get_rtnl(port_dev); | |
839 | if (!port || !team_port_find(team, port)) { | |
840 | netdev_err(dev, "Device %s does not act as a port of this team\n", | |
841 | portname); | |
842 | return -ENOENT; | |
843 | } | |
844 | ||
b82b9183 | 845 | port->removed = true; |
3d249d4c JP |
846 | __team_port_change_check(port, false); |
847 | team_port_list_del_port(team, port); | |
848 | team_adjust_ops(team); | |
80f7c668 | 849 | team_option_port_del(team, port); |
3d249d4c JP |
850 | netdev_rx_handler_unregister(port_dev); |
851 | netdev_set_master(port_dev, NULL); | |
57459185 | 852 | vlan_vids_del_by_dev(port_dev, dev); |
3d249d4c JP |
853 | dev_close(port_dev); |
854 | team_port_leave(team, port); | |
855 | team_port_set_orig_mac(port); | |
856 | dev_set_mtu(port_dev, port->orig.mtu); | |
857 | synchronize_rcu(); | |
858 | kfree(port); | |
859 | netdev_info(dev, "Port device %s removed\n", portname); | |
860 | __team_compute_features(team); | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | ||
866 | /***************** | |
867 | * Net device ops | |
868 | *****************/ | |
869 | ||
870 | static const char team_no_mode_kind[] = "*NOMODE*"; | |
871 | ||
80f7c668 | 872 | static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 873 | { |
80f7c668 | 874 | ctx->data.str_val = team->mode ? team->mode->kind : team_no_mode_kind; |
3d249d4c JP |
875 | return 0; |
876 | } | |
877 | ||
80f7c668 | 878 | static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 879 | { |
80f7c668 | 880 | return team_change_mode(team, ctx->data.str_val); |
3d249d4c JP |
881 | } |
882 | ||
358b8382 | 883 | static const struct team_option team_options[] = { |
3d249d4c JP |
884 | { |
885 | .name = "mode", | |
886 | .type = TEAM_OPTION_TYPE_STRING, | |
887 | .getter = team_mode_option_get, | |
888 | .setter = team_mode_option_set, | |
889 | }, | |
890 | }; | |
891 | ||
892 | static int team_init(struct net_device *dev) | |
893 | { | |
894 | struct team *team = netdev_priv(dev); | |
895 | int i; | |
358b8382 | 896 | int err; |
3d249d4c JP |
897 | |
898 | team->dev = dev; | |
61dc3461 | 899 | mutex_init(&team->lock); |
3d249d4c JP |
900 | |
901 | team->pcpu_stats = alloc_percpu(struct team_pcpu_stats); | |
902 | if (!team->pcpu_stats) | |
903 | return -ENOMEM; | |
904 | ||
905 | for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) | |
906 | INIT_HLIST_HEAD(&team->port_hlist[i]); | |
907 | INIT_LIST_HEAD(&team->port_list); | |
908 | ||
909 | team_adjust_ops(team); | |
910 | ||
911 | INIT_LIST_HEAD(&team->option_list); | |
80f7c668 | 912 | INIT_LIST_HEAD(&team->option_inst_list); |
358b8382 JP |
913 | err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); |
914 | if (err) | |
915 | goto err_options_register; | |
3d249d4c JP |
916 | netif_carrier_off(dev); |
917 | ||
918 | return 0; | |
358b8382 JP |
919 | |
920 | err_options_register: | |
921 | free_percpu(team->pcpu_stats); | |
922 | ||
923 | return err; | |
3d249d4c JP |
924 | } |
925 | ||
926 | static void team_uninit(struct net_device *dev) | |
927 | { | |
928 | struct team *team = netdev_priv(dev); | |
929 | struct team_port *port; | |
930 | struct team_port *tmp; | |
931 | ||
61dc3461 | 932 | mutex_lock(&team->lock); |
3d249d4c JP |
933 | list_for_each_entry_safe(port, tmp, &team->port_list, list) |
934 | team_port_del(team, port->dev); | |
935 | ||
936 | __team_change_mode(team, NULL); /* cleanup */ | |
937 | __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); | |
61dc3461 | 938 | mutex_unlock(&team->lock); |
3d249d4c JP |
939 | } |
940 | ||
941 | static void team_destructor(struct net_device *dev) | |
942 | { | |
943 | struct team *team = netdev_priv(dev); | |
944 | ||
945 | free_percpu(team->pcpu_stats); | |
946 | free_netdev(dev); | |
947 | } | |
948 | ||
949 | static int team_open(struct net_device *dev) | |
950 | { | |
951 | netif_carrier_on(dev); | |
952 | return 0; | |
953 | } | |
954 | ||
955 | static int team_close(struct net_device *dev) | |
956 | { | |
957 | netif_carrier_off(dev); | |
958 | return 0; | |
959 | } | |
960 | ||
961 | /* | |
962 | * note: already called with rcu_read_lock | |
963 | */ | |
964 | static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) | |
965 | { | |
966 | struct team *team = netdev_priv(dev); | |
967 | bool tx_success = false; | |
968 | unsigned int len = skb->len; | |
969 | ||
970 | tx_success = team->ops.transmit(team, skb); | |
971 | if (tx_success) { | |
972 | struct team_pcpu_stats *pcpu_stats; | |
973 | ||
974 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
975 | u64_stats_update_begin(&pcpu_stats->syncp); | |
976 | pcpu_stats->tx_packets++; | |
977 | pcpu_stats->tx_bytes += len; | |
978 | u64_stats_update_end(&pcpu_stats->syncp); | |
979 | } else { | |
980 | this_cpu_inc(team->pcpu_stats->tx_dropped); | |
981 | } | |
982 | ||
983 | return NETDEV_TX_OK; | |
984 | } | |
985 | ||
986 | static void team_change_rx_flags(struct net_device *dev, int change) | |
987 | { | |
988 | struct team *team = netdev_priv(dev); | |
989 | struct team_port *port; | |
990 | int inc; | |
991 | ||
992 | rcu_read_lock(); | |
993 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
994 | if (change & IFF_PROMISC) { | |
995 | inc = dev->flags & IFF_PROMISC ? 1 : -1; | |
996 | dev_set_promiscuity(port->dev, inc); | |
997 | } | |
998 | if (change & IFF_ALLMULTI) { | |
999 | inc = dev->flags & IFF_ALLMULTI ? 1 : -1; | |
1000 | dev_set_allmulti(port->dev, inc); | |
1001 | } | |
1002 | } | |
1003 | rcu_read_unlock(); | |
1004 | } | |
1005 | ||
1006 | static void team_set_rx_mode(struct net_device *dev) | |
1007 | { | |
1008 | struct team *team = netdev_priv(dev); | |
1009 | struct team_port *port; | |
1010 | ||
1011 | rcu_read_lock(); | |
1012 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1013 | dev_uc_sync(port->dev, dev); | |
1014 | dev_mc_sync(port->dev, dev); | |
1015 | } | |
1016 | rcu_read_unlock(); | |
1017 | } | |
1018 | ||
1019 | static int team_set_mac_address(struct net_device *dev, void *p) | |
1020 | { | |
1021 | struct team *team = netdev_priv(dev); | |
1022 | struct team_port *port; | |
1023 | struct sockaddr *addr = p; | |
1024 | ||
7ce5d222 | 1025 | dev->addr_assign_type &= ~NET_ADDR_RANDOM; |
3d249d4c JP |
1026 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); |
1027 | rcu_read_lock(); | |
1028 | list_for_each_entry_rcu(port, &team->port_list, list) | |
1029 | if (team->ops.port_change_mac) | |
1030 | team->ops.port_change_mac(team, port); | |
1031 | rcu_read_unlock(); | |
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | static int team_change_mtu(struct net_device *dev, int new_mtu) | |
1036 | { | |
1037 | struct team *team = netdev_priv(dev); | |
1038 | struct team_port *port; | |
1039 | int err; | |
1040 | ||
1041 | /* | |
1042 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1043 | * to traverse list in reverse under rcu_read_lock | |
1044 | */ | |
61dc3461 | 1045 | mutex_lock(&team->lock); |
3d249d4c JP |
1046 | list_for_each_entry(port, &team->port_list, list) { |
1047 | err = dev_set_mtu(port->dev, new_mtu); | |
1048 | if (err) { | |
1049 | netdev_err(dev, "Device %s failed to change mtu", | |
1050 | port->dev->name); | |
1051 | goto unwind; | |
1052 | } | |
1053 | } | |
61dc3461 | 1054 | mutex_unlock(&team->lock); |
3d249d4c JP |
1055 | |
1056 | dev->mtu = new_mtu; | |
1057 | ||
1058 | return 0; | |
1059 | ||
1060 | unwind: | |
1061 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1062 | dev_set_mtu(port->dev, dev->mtu); | |
61dc3461 | 1063 | mutex_unlock(&team->lock); |
3d249d4c JP |
1064 | |
1065 | return err; | |
1066 | } | |
1067 | ||
1068 | static struct rtnl_link_stats64 * | |
1069 | team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
1070 | { | |
1071 | struct team *team = netdev_priv(dev); | |
1072 | struct team_pcpu_stats *p; | |
1073 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; | |
1074 | u32 rx_dropped = 0, tx_dropped = 0; | |
1075 | unsigned int start; | |
1076 | int i; | |
1077 | ||
1078 | for_each_possible_cpu(i) { | |
1079 | p = per_cpu_ptr(team->pcpu_stats, i); | |
1080 | do { | |
1081 | start = u64_stats_fetch_begin_bh(&p->syncp); | |
1082 | rx_packets = p->rx_packets; | |
1083 | rx_bytes = p->rx_bytes; | |
1084 | rx_multicast = p->rx_multicast; | |
1085 | tx_packets = p->tx_packets; | |
1086 | tx_bytes = p->tx_bytes; | |
1087 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); | |
1088 | ||
1089 | stats->rx_packets += rx_packets; | |
1090 | stats->rx_bytes += rx_bytes; | |
1091 | stats->multicast += rx_multicast; | |
1092 | stats->tx_packets += tx_packets; | |
1093 | stats->tx_bytes += tx_bytes; | |
1094 | /* | |
1095 | * rx_dropped & tx_dropped are u32, updated | |
1096 | * without syncp protection. | |
1097 | */ | |
1098 | rx_dropped += p->rx_dropped; | |
1099 | tx_dropped += p->tx_dropped; | |
1100 | } | |
1101 | stats->rx_dropped = rx_dropped; | |
1102 | stats->tx_dropped = tx_dropped; | |
1103 | return stats; | |
1104 | } | |
1105 | ||
8e586137 | 1106 | static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1107 | { |
1108 | struct team *team = netdev_priv(dev); | |
1109 | struct team_port *port; | |
87002b03 | 1110 | int err; |
3d249d4c | 1111 | |
87002b03 JP |
1112 | /* |
1113 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1114 | * to traverse list in reverse under rcu_read_lock | |
1115 | */ | |
1116 | mutex_lock(&team->lock); | |
1117 | list_for_each_entry(port, &team->port_list, list) { | |
1118 | err = vlan_vid_add(port->dev, vid); | |
1119 | if (err) | |
1120 | goto unwind; | |
3d249d4c | 1121 | } |
87002b03 | 1122 | mutex_unlock(&team->lock); |
8e586137 JP |
1123 | |
1124 | return 0; | |
87002b03 JP |
1125 | |
1126 | unwind: | |
1127 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1128 | vlan_vid_del(port->dev, vid); | |
1129 | mutex_unlock(&team->lock); | |
1130 | ||
1131 | return err; | |
3d249d4c JP |
1132 | } |
1133 | ||
8e586137 | 1134 | static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1135 | { |
1136 | struct team *team = netdev_priv(dev); | |
1137 | struct team_port *port; | |
1138 | ||
1139 | rcu_read_lock(); | |
87002b03 JP |
1140 | list_for_each_entry_rcu(port, &team->port_list, list) |
1141 | vlan_vid_del(port->dev, vid); | |
3d249d4c | 1142 | rcu_read_unlock(); |
8e586137 JP |
1143 | |
1144 | return 0; | |
3d249d4c JP |
1145 | } |
1146 | ||
1147 | static int team_add_slave(struct net_device *dev, struct net_device *port_dev) | |
1148 | { | |
1149 | struct team *team = netdev_priv(dev); | |
1150 | int err; | |
1151 | ||
61dc3461 | 1152 | mutex_lock(&team->lock); |
3d249d4c | 1153 | err = team_port_add(team, port_dev); |
61dc3461 | 1154 | mutex_unlock(&team->lock); |
3d249d4c JP |
1155 | return err; |
1156 | } | |
1157 | ||
1158 | static int team_del_slave(struct net_device *dev, struct net_device *port_dev) | |
1159 | { | |
1160 | struct team *team = netdev_priv(dev); | |
1161 | int err; | |
1162 | ||
61dc3461 | 1163 | mutex_lock(&team->lock); |
3d249d4c | 1164 | err = team_port_del(team, port_dev); |
61dc3461 | 1165 | mutex_unlock(&team->lock); |
3d249d4c JP |
1166 | return err; |
1167 | } | |
1168 | ||
234a8fd4 JP |
1169 | static netdev_features_t team_fix_features(struct net_device *dev, |
1170 | netdev_features_t features) | |
1171 | { | |
1172 | struct team_port *port; | |
1173 | struct team *team = netdev_priv(dev); | |
1174 | netdev_features_t mask; | |
1175 | ||
1176 | mask = features; | |
1177 | features &= ~NETIF_F_ONE_FOR_ALL; | |
1178 | features |= NETIF_F_ALL_FOR_ALL; | |
1179 | ||
1180 | rcu_read_lock(); | |
1181 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1182 | features = netdev_increment_features(features, | |
1183 | port->dev->features, | |
1184 | mask); | |
1185 | } | |
1186 | rcu_read_unlock(); | |
1187 | return features; | |
1188 | } | |
1189 | ||
3d249d4c JP |
1190 | static const struct net_device_ops team_netdev_ops = { |
1191 | .ndo_init = team_init, | |
1192 | .ndo_uninit = team_uninit, | |
1193 | .ndo_open = team_open, | |
1194 | .ndo_stop = team_close, | |
1195 | .ndo_start_xmit = team_xmit, | |
1196 | .ndo_change_rx_flags = team_change_rx_flags, | |
1197 | .ndo_set_rx_mode = team_set_rx_mode, | |
1198 | .ndo_set_mac_address = team_set_mac_address, | |
1199 | .ndo_change_mtu = team_change_mtu, | |
1200 | .ndo_get_stats64 = team_get_stats64, | |
1201 | .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, | |
1202 | .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, | |
1203 | .ndo_add_slave = team_add_slave, | |
1204 | .ndo_del_slave = team_del_slave, | |
234a8fd4 | 1205 | .ndo_fix_features = team_fix_features, |
3d249d4c JP |
1206 | }; |
1207 | ||
1208 | ||
1209 | /*********************** | |
1210 | * rt netlink interface | |
1211 | ***********************/ | |
1212 | ||
1213 | static void team_setup(struct net_device *dev) | |
1214 | { | |
1215 | ether_setup(dev); | |
1216 | ||
1217 | dev->netdev_ops = &team_netdev_ops; | |
1218 | dev->destructor = team_destructor; | |
1219 | dev->tx_queue_len = 0; | |
1220 | dev->flags |= IFF_MULTICAST; | |
1221 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); | |
1222 | ||
1223 | /* | |
1224 | * Indicate we support unicast address filtering. That way core won't | |
1225 | * bring us to promisc mode in case a unicast addr is added. | |
1226 | * Let this up to underlay drivers. | |
1227 | */ | |
1228 | dev->priv_flags |= IFF_UNICAST_FLT; | |
1229 | ||
1230 | dev->features |= NETIF_F_LLTX; | |
1231 | dev->features |= NETIF_F_GRO; | |
1232 | dev->hw_features = NETIF_F_HW_VLAN_TX | | |
1233 | NETIF_F_HW_VLAN_RX | | |
1234 | NETIF_F_HW_VLAN_FILTER; | |
1235 | ||
1236 | dev->features |= dev->hw_features; | |
1237 | } | |
1238 | ||
1239 | static int team_newlink(struct net *src_net, struct net_device *dev, | |
1240 | struct nlattr *tb[], struct nlattr *data[]) | |
1241 | { | |
1242 | int err; | |
1243 | ||
1244 | if (tb[IFLA_ADDRESS] == NULL) | |
7ce5d222 | 1245 | eth_hw_addr_random(dev); |
3d249d4c JP |
1246 | |
1247 | err = register_netdevice(dev); | |
1248 | if (err) | |
1249 | return err; | |
1250 | ||
1251 | return 0; | |
1252 | } | |
1253 | ||
1254 | static int team_validate(struct nlattr *tb[], struct nlattr *data[]) | |
1255 | { | |
1256 | if (tb[IFLA_ADDRESS]) { | |
1257 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
1258 | return -EINVAL; | |
1259 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
1260 | return -EADDRNOTAVAIL; | |
1261 | } | |
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | static struct rtnl_link_ops team_link_ops __read_mostly = { | |
1266 | .kind = DRV_NAME, | |
1267 | .priv_size = sizeof(struct team), | |
1268 | .setup = team_setup, | |
1269 | .newlink = team_newlink, | |
1270 | .validate = team_validate, | |
1271 | }; | |
1272 | ||
1273 | ||
1274 | /*********************************** | |
1275 | * Generic netlink custom interface | |
1276 | ***********************************/ | |
1277 | ||
1278 | static struct genl_family team_nl_family = { | |
1279 | .id = GENL_ID_GENERATE, | |
1280 | .name = TEAM_GENL_NAME, | |
1281 | .version = TEAM_GENL_VERSION, | |
1282 | .maxattr = TEAM_ATTR_MAX, | |
1283 | .netnsok = true, | |
1284 | }; | |
1285 | ||
1286 | static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { | |
1287 | [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1288 | [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, | |
1289 | [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, | |
1290 | [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, | |
1291 | }; | |
1292 | ||
1293 | static const struct nla_policy | |
1294 | team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { | |
1295 | [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1296 | [TEAM_ATTR_OPTION_NAME] = { | |
1297 | .type = NLA_STRING, | |
1298 | .len = TEAM_STRING_MAX_LEN, | |
1299 | }, | |
1300 | [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, | |
1301 | [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, | |
2615598f | 1302 | [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, |
3d249d4c JP |
1303 | }; |
1304 | ||
1305 | static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) | |
1306 | { | |
1307 | struct sk_buff *msg; | |
1308 | void *hdr; | |
1309 | int err; | |
1310 | ||
1311 | msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1312 | if (!msg) | |
1313 | return -ENOMEM; | |
1314 | ||
1315 | hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, | |
1316 | &team_nl_family, 0, TEAM_CMD_NOOP); | |
1317 | if (IS_ERR(hdr)) { | |
1318 | err = PTR_ERR(hdr); | |
1319 | goto err_msg_put; | |
1320 | } | |
1321 | ||
1322 | genlmsg_end(msg, hdr); | |
1323 | ||
1324 | return genlmsg_unicast(genl_info_net(info), msg, info->snd_pid); | |
1325 | ||
1326 | err_msg_put: | |
1327 | nlmsg_free(msg); | |
1328 | ||
1329 | return err; | |
1330 | } | |
1331 | ||
1332 | /* | |
1333 | * Netlink cmd functions should be locked by following two functions. | |
8c0713a5 | 1334 | * Since dev gets held here, that ensures dev won't disappear in between. |
3d249d4c JP |
1335 | */ |
1336 | static struct team *team_nl_team_get(struct genl_info *info) | |
1337 | { | |
1338 | struct net *net = genl_info_net(info); | |
1339 | int ifindex; | |
1340 | struct net_device *dev; | |
1341 | struct team *team; | |
1342 | ||
1343 | if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) | |
1344 | return NULL; | |
1345 | ||
1346 | ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); | |
8c0713a5 | 1347 | dev = dev_get_by_index(net, ifindex); |
3d249d4c | 1348 | if (!dev || dev->netdev_ops != &team_netdev_ops) { |
8c0713a5 JP |
1349 | if (dev) |
1350 | dev_put(dev); | |
3d249d4c JP |
1351 | return NULL; |
1352 | } | |
1353 | ||
1354 | team = netdev_priv(dev); | |
61dc3461 | 1355 | mutex_lock(&team->lock); |
3d249d4c JP |
1356 | return team; |
1357 | } | |
1358 | ||
1359 | static void team_nl_team_put(struct team *team) | |
1360 | { | |
61dc3461 | 1361 | mutex_unlock(&team->lock); |
8c0713a5 | 1362 | dev_put(team->dev); |
3d249d4c JP |
1363 | } |
1364 | ||
1365 | static int team_nl_send_generic(struct genl_info *info, struct team *team, | |
1366 | int (*fill_func)(struct sk_buff *skb, | |
1367 | struct genl_info *info, | |
1368 | int flags, struct team *team)) | |
1369 | { | |
1370 | struct sk_buff *skb; | |
1371 | int err; | |
1372 | ||
1373 | skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1374 | if (!skb) | |
1375 | return -ENOMEM; | |
1376 | ||
1377 | err = fill_func(skb, info, NLM_F_ACK, team); | |
1378 | if (err < 0) | |
1379 | goto err_fill; | |
1380 | ||
1381 | err = genlmsg_unicast(genl_info_net(info), skb, info->snd_pid); | |
1382 | return err; | |
1383 | ||
1384 | err_fill: | |
1385 | nlmsg_free(skb); | |
1386 | return err; | |
1387 | } | |
1388 | ||
b82b9183 JP |
1389 | static int team_nl_fill_options_get(struct sk_buff *skb, |
1390 | u32 pid, u32 seq, int flags, | |
1391 | struct team *team, bool fillall) | |
3d249d4c JP |
1392 | { |
1393 | struct nlattr *option_list; | |
1394 | void *hdr; | |
80f7c668 JP |
1395 | struct team_option_inst *opt_inst; |
1396 | int err; | |
3d249d4c JP |
1397 | |
1398 | hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, | |
1399 | TEAM_CMD_OPTIONS_GET); | |
1400 | if (IS_ERR(hdr)) | |
1401 | return PTR_ERR(hdr); | |
1402 | ||
86ebb02d DM |
1403 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
1404 | goto nla_put_failure; | |
3d249d4c JP |
1405 | option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION); |
1406 | if (!option_list) | |
1407 | return -EMSGSIZE; | |
1408 | ||
80f7c668 | 1409 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
3d249d4c | 1410 | struct nlattr *option_item; |
80f7c668 JP |
1411 | struct team_option *option = opt_inst->option; |
1412 | struct team_gsetter_ctx ctx; | |
3d249d4c | 1413 | |
b82b9183 | 1414 | /* Include only changed options if fill all mode is not on */ |
80f7c668 | 1415 | if (!fillall && !opt_inst->changed) |
b82b9183 | 1416 | continue; |
3d249d4c JP |
1417 | option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION); |
1418 | if (!option_item) | |
1419 | goto nla_put_failure; | |
86ebb02d DM |
1420 | if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) |
1421 | goto nla_put_failure; | |
80f7c668 | 1422 | if (opt_inst->changed) { |
86ebb02d DM |
1423 | if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) |
1424 | goto nla_put_failure; | |
80f7c668 | 1425 | opt_inst->changed = false; |
b82b9183 | 1426 | } |
80f7c668 | 1427 | if (opt_inst->removed && |
86ebb02d DM |
1428 | nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) |
1429 | goto nla_put_failure; | |
80f7c668 JP |
1430 | if (opt_inst->port && |
1431 | nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, | |
1432 | opt_inst->port->dev->ifindex)) | |
1433 | goto nla_put_failure; | |
1434 | ctx.port = opt_inst->port; | |
3d249d4c JP |
1435 | switch (option->type) { |
1436 | case TEAM_OPTION_TYPE_U32: | |
86ebb02d DM |
1437 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) |
1438 | goto nla_put_failure; | |
80f7c668 JP |
1439 | err = team_option_get(team, opt_inst, &ctx); |
1440 | if (err) | |
1441 | goto errout; | |
1442 | if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, | |
1443 | ctx.data.u32_val)) | |
86ebb02d | 1444 | goto nla_put_failure; |
3d249d4c JP |
1445 | break; |
1446 | case TEAM_OPTION_TYPE_STRING: | |
86ebb02d DM |
1447 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) |
1448 | goto nla_put_failure; | |
80f7c668 JP |
1449 | err = team_option_get(team, opt_inst, &ctx); |
1450 | if (err) | |
1451 | goto errout; | |
86ebb02d | 1452 | if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, |
80f7c668 | 1453 | ctx.data.str_val)) |
86ebb02d | 1454 | goto nla_put_failure; |
3d249d4c | 1455 | break; |
2615598f JP |
1456 | case TEAM_OPTION_TYPE_BINARY: |
1457 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) | |
1458 | goto nla_put_failure; | |
80f7c668 JP |
1459 | err = team_option_get(team, opt_inst, &ctx); |
1460 | if (err) | |
1461 | goto errout; | |
2615598f | 1462 | if (nla_put(skb, TEAM_ATTR_OPTION_DATA, |
80f7c668 | 1463 | ctx.data.bin_val.len, ctx.data.bin_val.ptr)) |
2615598f JP |
1464 | goto nla_put_failure; |
1465 | break; | |
14f066ba JP |
1466 | case TEAM_OPTION_TYPE_BOOL: |
1467 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) | |
1468 | goto nla_put_failure; | |
1469 | err = team_option_get(team, opt_inst, &ctx); | |
1470 | if (err) | |
1471 | goto errout; | |
1472 | if (ctx.data.bool_val && | |
1473 | nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) | |
1474 | goto nla_put_failure; | |
1475 | break; | |
3d249d4c JP |
1476 | default: |
1477 | BUG(); | |
1478 | } | |
1479 | nla_nest_end(skb, option_item); | |
1480 | } | |
1481 | ||
1482 | nla_nest_end(skb, option_list); | |
1483 | return genlmsg_end(skb, hdr); | |
1484 | ||
1485 | nla_put_failure: | |
80f7c668 JP |
1486 | err = -EMSGSIZE; |
1487 | errout: | |
3d249d4c | 1488 | genlmsg_cancel(skb, hdr); |
80f7c668 | 1489 | return err; |
3d249d4c JP |
1490 | } |
1491 | ||
b82b9183 JP |
1492 | static int team_nl_fill_options_get_all(struct sk_buff *skb, |
1493 | struct genl_info *info, int flags, | |
1494 | struct team *team) | |
3d249d4c | 1495 | { |
b82b9183 JP |
1496 | return team_nl_fill_options_get(skb, info->snd_pid, |
1497 | info->snd_seq, NLM_F_ACK, | |
1498 | team, true); | |
3d249d4c JP |
1499 | } |
1500 | ||
1501 | static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) | |
1502 | { | |
1503 | struct team *team; | |
1504 | int err; | |
1505 | ||
1506 | team = team_nl_team_get(info); | |
1507 | if (!team) | |
1508 | return -EINVAL; | |
1509 | ||
b82b9183 | 1510 | err = team_nl_send_generic(info, team, team_nl_fill_options_get_all); |
3d249d4c JP |
1511 | |
1512 | team_nl_team_put(team); | |
1513 | ||
1514 | return err; | |
1515 | } | |
1516 | ||
1517 | static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) | |
1518 | { | |
1519 | struct team *team; | |
1520 | int err = 0; | |
1521 | int i; | |
1522 | struct nlattr *nl_option; | |
1523 | ||
1524 | team = team_nl_team_get(info); | |
1525 | if (!team) | |
1526 | return -EINVAL; | |
1527 | ||
1528 | err = -EINVAL; | |
1529 | if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { | |
1530 | err = -EINVAL; | |
1531 | goto team_put; | |
1532 | } | |
1533 | ||
1534 | nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { | |
80f7c668 JP |
1535 | struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; |
1536 | struct nlattr *attr_port_ifindex; | |
14f066ba | 1537 | struct nlattr *attr_data; |
3d249d4c | 1538 | enum team_option_type opt_type; |
80f7c668 JP |
1539 | int opt_port_ifindex = 0; /* != 0 for per-port options */ |
1540 | struct team_option_inst *opt_inst; | |
3d249d4c JP |
1541 | char *opt_name; |
1542 | bool opt_found = false; | |
1543 | ||
1544 | if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { | |
1545 | err = -EINVAL; | |
1546 | goto team_put; | |
1547 | } | |
80f7c668 | 1548 | err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX, |
3d249d4c JP |
1549 | nl_option, team_nl_option_policy); |
1550 | if (err) | |
1551 | goto team_put; | |
80f7c668 | 1552 | if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || |
14f066ba | 1553 | !opt_attrs[TEAM_ATTR_OPTION_TYPE]) { |
3d249d4c JP |
1554 | err = -EINVAL; |
1555 | goto team_put; | |
1556 | } | |
80f7c668 | 1557 | switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { |
3d249d4c JP |
1558 | case NLA_U32: |
1559 | opt_type = TEAM_OPTION_TYPE_U32; | |
1560 | break; | |
1561 | case NLA_STRING: | |
1562 | opt_type = TEAM_OPTION_TYPE_STRING; | |
1563 | break; | |
2615598f JP |
1564 | case NLA_BINARY: |
1565 | opt_type = TEAM_OPTION_TYPE_BINARY; | |
1566 | break; | |
14f066ba JP |
1567 | case NLA_FLAG: |
1568 | opt_type = TEAM_OPTION_TYPE_BOOL; | |
1569 | break; | |
3d249d4c JP |
1570 | default: |
1571 | goto team_put; | |
1572 | } | |
1573 | ||
14f066ba JP |
1574 | attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; |
1575 | if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { | |
1576 | err = -EINVAL; | |
1577 | goto team_put; | |
1578 | } | |
1579 | ||
80f7c668 JP |
1580 | opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); |
1581 | attr_port_ifindex = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; | |
1582 | if (attr_port_ifindex) | |
1583 | opt_port_ifindex = nla_get_u32(attr_port_ifindex); | |
1584 | ||
1585 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
1586 | struct team_option *option = opt_inst->option; | |
80f7c668 | 1587 | struct team_gsetter_ctx ctx; |
80f7c668 | 1588 | int tmp_ifindex; |
3d249d4c | 1589 | |
80f7c668 JP |
1590 | tmp_ifindex = opt_inst->port ? |
1591 | opt_inst->port->dev->ifindex : 0; | |
3d249d4c | 1592 | if (option->type != opt_type || |
80f7c668 JP |
1593 | strcmp(option->name, opt_name) || |
1594 | tmp_ifindex != opt_port_ifindex) | |
3d249d4c JP |
1595 | continue; |
1596 | opt_found = true; | |
80f7c668 | 1597 | ctx.port = opt_inst->port; |
3d249d4c JP |
1598 | switch (opt_type) { |
1599 | case TEAM_OPTION_TYPE_U32: | |
14f066ba | 1600 | ctx.data.u32_val = nla_get_u32(attr_data); |
3d249d4c JP |
1601 | break; |
1602 | case TEAM_OPTION_TYPE_STRING: | |
14f066ba | 1603 | if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { |
2615598f JP |
1604 | err = -EINVAL; |
1605 | goto team_put; | |
1606 | } | |
14f066ba | 1607 | ctx.data.str_val = nla_data(attr_data); |
3d249d4c | 1608 | break; |
2615598f | 1609 | case TEAM_OPTION_TYPE_BINARY: |
14f066ba JP |
1610 | ctx.data.bin_val.len = nla_len(attr_data); |
1611 | ctx.data.bin_val.ptr = nla_data(attr_data); | |
1612 | break; | |
1613 | case TEAM_OPTION_TYPE_BOOL: | |
1614 | ctx.data.bool_val = attr_data ? true : false; | |
2615598f | 1615 | break; |
3d249d4c JP |
1616 | default: |
1617 | BUG(); | |
1618 | } | |
80f7c668 | 1619 | err = team_option_set(team, opt_inst, &ctx); |
3d249d4c JP |
1620 | if (err) |
1621 | goto team_put; | |
1622 | } | |
1623 | if (!opt_found) { | |
1624 | err = -ENOENT; | |
1625 | goto team_put; | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | team_put: | |
1630 | team_nl_team_put(team); | |
1631 | ||
1632 | return err; | |
1633 | } | |
1634 | ||
b82b9183 JP |
1635 | static int team_nl_fill_port_list_get(struct sk_buff *skb, |
1636 | u32 pid, u32 seq, int flags, | |
1637 | struct team *team, | |
1638 | bool fillall) | |
3d249d4c JP |
1639 | { |
1640 | struct nlattr *port_list; | |
1641 | void *hdr; | |
1642 | struct team_port *port; | |
1643 | ||
1644 | hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, | |
1645 | TEAM_CMD_PORT_LIST_GET); | |
1646 | if (IS_ERR(hdr)) | |
1647 | return PTR_ERR(hdr); | |
1648 | ||
86ebb02d DM |
1649 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
1650 | goto nla_put_failure; | |
3d249d4c JP |
1651 | port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT); |
1652 | if (!port_list) | |
1653 | return -EMSGSIZE; | |
1654 | ||
1655 | list_for_each_entry(port, &team->port_list, list) { | |
1656 | struct nlattr *port_item; | |
1657 | ||
b82b9183 JP |
1658 | /* Include only changed ports if fill all mode is not on */ |
1659 | if (!fillall && !port->changed) | |
1660 | continue; | |
3d249d4c JP |
1661 | port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); |
1662 | if (!port_item) | |
1663 | goto nla_put_failure; | |
86ebb02d DM |
1664 | if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) |
1665 | goto nla_put_failure; | |
b82b9183 | 1666 | if (port->changed) { |
86ebb02d DM |
1667 | if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) |
1668 | goto nla_put_failure; | |
b82b9183 JP |
1669 | port->changed = false; |
1670 | } | |
86ebb02d DM |
1671 | if ((port->removed && |
1672 | nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || | |
1673 | (port->linkup && | |
1674 | nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || | |
1675 | nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->speed) || | |
1676 | nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->duplex)) | |
1677 | goto nla_put_failure; | |
3d249d4c JP |
1678 | nla_nest_end(skb, port_item); |
1679 | } | |
1680 | ||
1681 | nla_nest_end(skb, port_list); | |
1682 | return genlmsg_end(skb, hdr); | |
1683 | ||
1684 | nla_put_failure: | |
1685 | genlmsg_cancel(skb, hdr); | |
1686 | return -EMSGSIZE; | |
1687 | } | |
1688 | ||
b82b9183 JP |
1689 | static int team_nl_fill_port_list_get_all(struct sk_buff *skb, |
1690 | struct genl_info *info, int flags, | |
1691 | struct team *team) | |
3d249d4c | 1692 | { |
b82b9183 JP |
1693 | return team_nl_fill_port_list_get(skb, info->snd_pid, |
1694 | info->snd_seq, NLM_F_ACK, | |
1695 | team, true); | |
3d249d4c JP |
1696 | } |
1697 | ||
1698 | static int team_nl_cmd_port_list_get(struct sk_buff *skb, | |
1699 | struct genl_info *info) | |
1700 | { | |
1701 | struct team *team; | |
1702 | int err; | |
1703 | ||
1704 | team = team_nl_team_get(info); | |
1705 | if (!team) | |
1706 | return -EINVAL; | |
1707 | ||
b82b9183 | 1708 | err = team_nl_send_generic(info, team, team_nl_fill_port_list_get_all); |
3d249d4c JP |
1709 | |
1710 | team_nl_team_put(team); | |
1711 | ||
1712 | return err; | |
1713 | } | |
1714 | ||
1715 | static struct genl_ops team_nl_ops[] = { | |
1716 | { | |
1717 | .cmd = TEAM_CMD_NOOP, | |
1718 | .doit = team_nl_cmd_noop, | |
1719 | .policy = team_nl_policy, | |
1720 | }, | |
1721 | { | |
1722 | .cmd = TEAM_CMD_OPTIONS_SET, | |
1723 | .doit = team_nl_cmd_options_set, | |
1724 | .policy = team_nl_policy, | |
1725 | .flags = GENL_ADMIN_PERM, | |
1726 | }, | |
1727 | { | |
1728 | .cmd = TEAM_CMD_OPTIONS_GET, | |
1729 | .doit = team_nl_cmd_options_get, | |
1730 | .policy = team_nl_policy, | |
1731 | .flags = GENL_ADMIN_PERM, | |
1732 | }, | |
1733 | { | |
1734 | .cmd = TEAM_CMD_PORT_LIST_GET, | |
1735 | .doit = team_nl_cmd_port_list_get, | |
1736 | .policy = team_nl_policy, | |
1737 | .flags = GENL_ADMIN_PERM, | |
1738 | }, | |
1739 | }; | |
1740 | ||
1741 | static struct genl_multicast_group team_change_event_mcgrp = { | |
1742 | .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, | |
1743 | }; | |
1744 | ||
b82b9183 | 1745 | static int team_nl_send_event_options_get(struct team *team) |
3d249d4c JP |
1746 | { |
1747 | struct sk_buff *skb; | |
1748 | int err; | |
1749 | struct net *net = dev_net(team->dev); | |
1750 | ||
1751 | skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1752 | if (!skb) | |
1753 | return -ENOMEM; | |
1754 | ||
b82b9183 | 1755 | err = team_nl_fill_options_get(skb, 0, 0, 0, team, false); |
3d249d4c JP |
1756 | if (err < 0) |
1757 | goto err_fill; | |
1758 | ||
1759 | err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, | |
1760 | GFP_KERNEL); | |
1761 | return err; | |
1762 | ||
1763 | err_fill: | |
1764 | nlmsg_free(skb); | |
1765 | return err; | |
1766 | } | |
1767 | ||
b82b9183 | 1768 | static int team_nl_send_event_port_list_get(struct team *team) |
3d249d4c JP |
1769 | { |
1770 | struct sk_buff *skb; | |
1771 | int err; | |
b82b9183 | 1772 | struct net *net = dev_net(team->dev); |
3d249d4c JP |
1773 | |
1774 | skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
1775 | if (!skb) | |
1776 | return -ENOMEM; | |
1777 | ||
b82b9183 | 1778 | err = team_nl_fill_port_list_get(skb, 0, 0, 0, team, false); |
3d249d4c JP |
1779 | if (err < 0) |
1780 | goto err_fill; | |
1781 | ||
1782 | err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, | |
1783 | GFP_KERNEL); | |
1784 | return err; | |
1785 | ||
1786 | err_fill: | |
1787 | nlmsg_free(skb); | |
1788 | return err; | |
1789 | } | |
1790 | ||
1791 | static int team_nl_init(void) | |
1792 | { | |
1793 | int err; | |
1794 | ||
1795 | err = genl_register_family_with_ops(&team_nl_family, team_nl_ops, | |
1796 | ARRAY_SIZE(team_nl_ops)); | |
1797 | if (err) | |
1798 | return err; | |
1799 | ||
1800 | err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp); | |
1801 | if (err) | |
1802 | goto err_change_event_grp_reg; | |
1803 | ||
1804 | return 0; | |
1805 | ||
1806 | err_change_event_grp_reg: | |
1807 | genl_unregister_family(&team_nl_family); | |
1808 | ||
1809 | return err; | |
1810 | } | |
1811 | ||
1812 | static void team_nl_fini(void) | |
1813 | { | |
1814 | genl_unregister_family(&team_nl_family); | |
1815 | } | |
1816 | ||
1817 | ||
1818 | /****************** | |
1819 | * Change checkers | |
1820 | ******************/ | |
1821 | ||
b82b9183 | 1822 | static void __team_options_change_check(struct team *team) |
3d249d4c JP |
1823 | { |
1824 | int err; | |
1825 | ||
b82b9183 | 1826 | err = team_nl_send_event_options_get(team); |
3d249d4c JP |
1827 | if (err) |
1828 | netdev_warn(team->dev, "Failed to send options change via netlink\n"); | |
1829 | } | |
1830 | ||
1831 | /* rtnl lock is held */ | |
1832 | static void __team_port_change_check(struct team_port *port, bool linkup) | |
1833 | { | |
1834 | int err; | |
1835 | ||
b82b9183 | 1836 | if (!port->removed && port->linkup == linkup) |
3d249d4c JP |
1837 | return; |
1838 | ||
b82b9183 | 1839 | port->changed = true; |
3d249d4c JP |
1840 | port->linkup = linkup; |
1841 | if (linkup) { | |
1842 | struct ethtool_cmd ecmd; | |
1843 | ||
1844 | err = __ethtool_get_settings(port->dev, &ecmd); | |
1845 | if (!err) { | |
1846 | port->speed = ethtool_cmd_speed(&ecmd); | |
1847 | port->duplex = ecmd.duplex; | |
1848 | goto send_event; | |
1849 | } | |
1850 | } | |
1851 | port->speed = 0; | |
1852 | port->duplex = 0; | |
1853 | ||
1854 | send_event: | |
b82b9183 | 1855 | err = team_nl_send_event_port_list_get(port->team); |
3d249d4c JP |
1856 | if (err) |
1857 | netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n", | |
1858 | port->dev->name); | |
1859 | ||
1860 | } | |
1861 | ||
1862 | static void team_port_change_check(struct team_port *port, bool linkup) | |
1863 | { | |
1864 | struct team *team = port->team; | |
1865 | ||
61dc3461 | 1866 | mutex_lock(&team->lock); |
3d249d4c | 1867 | __team_port_change_check(port, linkup); |
61dc3461 | 1868 | mutex_unlock(&team->lock); |
3d249d4c JP |
1869 | } |
1870 | ||
1871 | /************************************ | |
1872 | * Net device notifier event handler | |
1873 | ************************************/ | |
1874 | ||
1875 | static int team_device_event(struct notifier_block *unused, | |
1876 | unsigned long event, void *ptr) | |
1877 | { | |
1878 | struct net_device *dev = (struct net_device *) ptr; | |
1879 | struct team_port *port; | |
1880 | ||
1881 | port = team_port_get_rtnl(dev); | |
1882 | if (!port) | |
1883 | return NOTIFY_DONE; | |
1884 | ||
1885 | switch (event) { | |
1886 | case NETDEV_UP: | |
1887 | if (netif_carrier_ok(dev)) | |
1888 | team_port_change_check(port, true); | |
1889 | case NETDEV_DOWN: | |
1890 | team_port_change_check(port, false); | |
1891 | case NETDEV_CHANGE: | |
1892 | if (netif_running(port->dev)) | |
1893 | team_port_change_check(port, | |
1894 | !!netif_carrier_ok(port->dev)); | |
1895 | break; | |
1896 | case NETDEV_UNREGISTER: | |
1897 | team_del_slave(port->team->dev, dev); | |
1898 | break; | |
1899 | case NETDEV_FEAT_CHANGE: | |
1900 | team_compute_features(port->team); | |
1901 | break; | |
1902 | case NETDEV_CHANGEMTU: | |
1903 | /* Forbid to change mtu of underlaying device */ | |
1904 | return NOTIFY_BAD; | |
1905 | case NETDEV_PRE_TYPE_CHANGE: | |
1906 | /* Forbid to change type of underlaying device */ | |
1907 | return NOTIFY_BAD; | |
1908 | } | |
1909 | return NOTIFY_DONE; | |
1910 | } | |
1911 | ||
1912 | static struct notifier_block team_notifier_block __read_mostly = { | |
1913 | .notifier_call = team_device_event, | |
1914 | }; | |
1915 | ||
1916 | ||
1917 | /*********************** | |
1918 | * Module init and exit | |
1919 | ***********************/ | |
1920 | ||
1921 | static int __init team_module_init(void) | |
1922 | { | |
1923 | int err; | |
1924 | ||
1925 | register_netdevice_notifier(&team_notifier_block); | |
1926 | ||
1927 | err = rtnl_link_register(&team_link_ops); | |
1928 | if (err) | |
1929 | goto err_rtnl_reg; | |
1930 | ||
1931 | err = team_nl_init(); | |
1932 | if (err) | |
1933 | goto err_nl_init; | |
1934 | ||
1935 | return 0; | |
1936 | ||
1937 | err_nl_init: | |
1938 | rtnl_link_unregister(&team_link_ops); | |
1939 | ||
1940 | err_rtnl_reg: | |
1941 | unregister_netdevice_notifier(&team_notifier_block); | |
1942 | ||
1943 | return err; | |
1944 | } | |
1945 | ||
1946 | static void __exit team_module_exit(void) | |
1947 | { | |
1948 | team_nl_fini(); | |
1949 | rtnl_link_unregister(&team_link_ops); | |
1950 | unregister_netdevice_notifier(&team_notifier_block); | |
1951 | } | |
1952 | ||
1953 | module_init(team_module_init); | |
1954 | module_exit(team_module_exit); | |
1955 | ||
1956 | MODULE_LICENSE("GPL v2"); | |
1957 | MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); | |
1958 | MODULE_DESCRIPTION("Ethernet team device driver"); | |
1959 | MODULE_ALIAS_RTNL_LINK(DRV_NAME); |