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Commit | Line | Data |
---|---|---|
3d249d4c | 1 | /* |
0d572e45 | 2 | * drivers/net/team/team.c - Network team device driver |
3d249d4c JP |
3 | * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com> |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | */ | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/types.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/rcupdate.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/ctype.h> | |
19 | #include <linux/notifier.h> | |
20 | #include <linux/netdevice.h> | |
bd2d0837 | 21 | #include <linux/netpoll.h> |
87002b03 | 22 | #include <linux/if_vlan.h> |
3d249d4c JP |
23 | #include <linux/if_arp.h> |
24 | #include <linux/socket.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/rtnetlink.h> | |
27 | #include <net/rtnetlink.h> | |
28 | #include <net/genetlink.h> | |
29 | #include <net/netlink.h> | |
6c85f2bd | 30 | #include <net/sch_generic.h> |
a16a8ee7 | 31 | #include <net/switchdev.h> |
7f51c587 | 32 | #include <generated/utsrelease.h> |
3d249d4c JP |
33 | #include <linux/if_team.h> |
34 | ||
35 | #define DRV_NAME "team" | |
36 | ||
37 | ||
38 | /********** | |
39 | * Helpers | |
40 | **********/ | |
41 | ||
42 | #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT) | |
43 | ||
44 | static struct team_port *team_port_get_rcu(const struct net_device *dev) | |
45 | { | |
57e59563 | 46 | return rcu_dereference(dev->rx_handler_data); |
3d249d4c JP |
47 | } |
48 | ||
49 | static struct team_port *team_port_get_rtnl(const struct net_device *dev) | |
50 | { | |
51 | struct team_port *port = rtnl_dereference(dev->rx_handler_data); | |
52 | ||
53 | return team_port_exists(dev) ? port : NULL; | |
54 | } | |
55 | ||
56 | /* | |
1d76efe1 | 57 | * Since the ability to change device address for open port device is tested in |
3d249d4c JP |
58 | * team_port_add, this function can be called without control of return value |
59 | */ | |
1d76efe1 JP |
60 | static int __set_port_dev_addr(struct net_device *port_dev, |
61 | const unsigned char *dev_addr) | |
3d249d4c | 62 | { |
996f6e12 | 63 | struct sockaddr_storage addr; |
3d249d4c | 64 | |
996f6e12 WC |
65 | memcpy(addr.__data, dev_addr, port_dev->addr_len); |
66 | addr.ss_family = port_dev->type; | |
67 | return dev_set_mac_address(port_dev, (struct sockaddr *)&addr); | |
3d249d4c JP |
68 | } |
69 | ||
1d76efe1 | 70 | static int team_port_set_orig_dev_addr(struct team_port *port) |
3d249d4c | 71 | { |
1d76efe1 | 72 | return __set_port_dev_addr(port->dev, port->orig.dev_addr); |
3d249d4c JP |
73 | } |
74 | ||
acbba0d0 JP |
75 | static int team_port_set_team_dev_addr(struct team *team, |
76 | struct team_port *port) | |
3d249d4c | 77 | { |
acbba0d0 | 78 | return __set_port_dev_addr(port->dev, team->dev->dev_addr); |
3d249d4c | 79 | } |
acbba0d0 JP |
80 | |
81 | int team_modeop_port_enter(struct team *team, struct team_port *port) | |
82 | { | |
83 | return team_port_set_team_dev_addr(team, port); | |
84 | } | |
85 | EXPORT_SYMBOL(team_modeop_port_enter); | |
86 | ||
87 | void team_modeop_port_change_dev_addr(struct team *team, | |
88 | struct team_port *port) | |
89 | { | |
90 | team_port_set_team_dev_addr(team, port); | |
91 | } | |
92 | EXPORT_SYMBOL(team_modeop_port_change_dev_addr); | |
3d249d4c | 93 | |
3a0d6c5a JP |
94 | static void team_lower_state_changed(struct team_port *port) |
95 | { | |
96 | struct netdev_lag_lower_state_info info; | |
97 | ||
98 | info.link_up = port->linkup; | |
99 | info.tx_enabled = team_port_enabled(port); | |
100 | netdev_lower_state_changed(port->dev, &info); | |
101 | } | |
102 | ||
71472ec1 JP |
103 | static void team_refresh_port_linkup(struct team_port *port) |
104 | { | |
3a0d6c5a JP |
105 | bool new_linkup = port->user.linkup_enabled ? port->user.linkup : |
106 | port->state.linkup; | |
107 | ||
108 | if (port->linkup != new_linkup) { | |
109 | port->linkup = new_linkup; | |
110 | team_lower_state_changed(port); | |
111 | } | |
71472ec1 | 112 | } |
3d249d4c | 113 | |
0f1aad2b | 114 | |
3d249d4c JP |
115 | /******************* |
116 | * Options handling | |
117 | *******************/ | |
118 | ||
80f7c668 JP |
119 | struct team_option_inst { /* One for each option instance */ |
120 | struct list_head list; | |
01048d9a | 121 | struct list_head tmp_list; |
80f7c668 | 122 | struct team_option *option; |
85d59a87 | 123 | struct team_option_inst_info info; |
80f7c668 JP |
124 | bool changed; |
125 | bool removed; | |
126 | }; | |
127 | ||
128 | static struct team_option *__team_find_option(struct team *team, | |
129 | const char *opt_name) | |
358b8382 JP |
130 | { |
131 | struct team_option *option; | |
132 | ||
133 | list_for_each_entry(option, &team->option_list, list) { | |
134 | if (strcmp(option->name, opt_name) == 0) | |
135 | return option; | |
136 | } | |
137 | return NULL; | |
138 | } | |
139 | ||
80f7c668 JP |
140 | static void __team_option_inst_del(struct team_option_inst *opt_inst) |
141 | { | |
142 | list_del(&opt_inst->list); | |
143 | kfree(opt_inst); | |
144 | } | |
145 | ||
146 | static void __team_option_inst_del_option(struct team *team, | |
147 | struct team_option *option) | |
148 | { | |
149 | struct team_option_inst *opt_inst, *tmp; | |
150 | ||
151 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
152 | if (opt_inst->option == option) | |
153 | __team_option_inst_del(opt_inst); | |
154 | } | |
155 | } | |
156 | ||
b1303326 JP |
157 | static int __team_option_inst_add(struct team *team, struct team_option *option, |
158 | struct team_port *port) | |
159 | { | |
160 | struct team_option_inst *opt_inst; | |
161 | unsigned int array_size; | |
162 | unsigned int i; | |
85d59a87 | 163 | int err; |
b1303326 JP |
164 | |
165 | array_size = option->array_size; | |
166 | if (!array_size) | |
167 | array_size = 1; /* No array but still need one instance */ | |
168 | ||
169 | for (i = 0; i < array_size; i++) { | |
170 | opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL); | |
171 | if (!opt_inst) | |
172 | return -ENOMEM; | |
173 | opt_inst->option = option; | |
85d59a87 JP |
174 | opt_inst->info.port = port; |
175 | opt_inst->info.array_index = i; | |
b1303326 JP |
176 | opt_inst->changed = true; |
177 | opt_inst->removed = false; | |
178 | list_add_tail(&opt_inst->list, &team->option_inst_list); | |
85d59a87 JP |
179 | if (option->init) { |
180 | err = option->init(team, &opt_inst->info); | |
181 | if (err) | |
182 | return err; | |
183 | } | |
184 | ||
b1303326 JP |
185 | } |
186 | return 0; | |
187 | } | |
188 | ||
80f7c668 JP |
189 | static int __team_option_inst_add_option(struct team *team, |
190 | struct team_option *option) | |
191 | { | |
80f7c668 JP |
192 | int err; |
193 | ||
b1303326 | 194 | if (!option->per_port) { |
f88725ff | 195 | err = __team_option_inst_add(team, option, NULL); |
b1303326 JP |
196 | if (err) |
197 | goto inst_del_option; | |
198 | } | |
80f7c668 JP |
199 | return 0; |
200 | ||
201 | inst_del_option: | |
202 | __team_option_inst_del_option(team, option); | |
203 | return err; | |
204 | } | |
205 | ||
206 | static void __team_option_inst_mark_removed_option(struct team *team, | |
207 | struct team_option *option) | |
208 | { | |
209 | struct team_option_inst *opt_inst; | |
210 | ||
211 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
212 | if (opt_inst->option == option) { | |
213 | opt_inst->changed = true; | |
214 | opt_inst->removed = true; | |
215 | } | |
216 | } | |
217 | } | |
218 | ||
219 | static void __team_option_inst_del_port(struct team *team, | |
220 | struct team_port *port) | |
221 | { | |
222 | struct team_option_inst *opt_inst, *tmp; | |
223 | ||
224 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
225 | if (opt_inst->option->per_port && | |
85d59a87 | 226 | opt_inst->info.port == port) |
80f7c668 JP |
227 | __team_option_inst_del(opt_inst); |
228 | } | |
229 | } | |
230 | ||
231 | static int __team_option_inst_add_port(struct team *team, | |
232 | struct team_port *port) | |
233 | { | |
234 | struct team_option *option; | |
235 | int err; | |
236 | ||
237 | list_for_each_entry(option, &team->option_list, list) { | |
238 | if (!option->per_port) | |
239 | continue; | |
240 | err = __team_option_inst_add(team, option, port); | |
241 | if (err) | |
242 | goto inst_del_port; | |
243 | } | |
244 | return 0; | |
245 | ||
246 | inst_del_port: | |
247 | __team_option_inst_del_port(team, port); | |
248 | return err; | |
249 | } | |
250 | ||
251 | static void __team_option_inst_mark_removed_port(struct team *team, | |
252 | struct team_port *port) | |
253 | { | |
254 | struct team_option_inst *opt_inst; | |
255 | ||
256 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
85d59a87 | 257 | if (opt_inst->info.port == port) { |
80f7c668 JP |
258 | opt_inst->changed = true; |
259 | opt_inst->removed = true; | |
260 | } | |
261 | } | |
262 | } | |
263 | ||
4fb0534f PA |
264 | static bool __team_option_inst_tmp_find(const struct list_head *opts, |
265 | const struct team_option_inst *needle) | |
266 | { | |
267 | struct team_option_inst *opt_inst; | |
268 | ||
269 | list_for_each_entry(opt_inst, opts, tmp_list) | |
270 | if (opt_inst == needle) | |
271 | return true; | |
272 | return false; | |
273 | } | |
274 | ||
80f7c668 JP |
275 | static int __team_options_register(struct team *team, |
276 | const struct team_option *option, | |
277 | size_t option_count) | |
3d249d4c JP |
278 | { |
279 | int i; | |
2bba19ff | 280 | struct team_option **dst_opts; |
358b8382 | 281 | int err; |
3d249d4c | 282 | |
2bba19ff JP |
283 | dst_opts = kzalloc(sizeof(struct team_option *) * option_count, |
284 | GFP_KERNEL); | |
285 | if (!dst_opts) | |
286 | return -ENOMEM; | |
358b8382 | 287 | for (i = 0; i < option_count; i++, option++) { |
358b8382 JP |
288 | if (__team_find_option(team, option->name)) { |
289 | err = -EEXIST; | |
80f7c668 | 290 | goto alloc_rollback; |
358b8382 | 291 | } |
f8a15af0 JP |
292 | dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); |
293 | if (!dst_opts[i]) { | |
358b8382 | 294 | err = -ENOMEM; |
80f7c668 | 295 | goto alloc_rollback; |
358b8382 | 296 | } |
358b8382 JP |
297 | } |
298 | ||
b82b9183 | 299 | for (i = 0; i < option_count; i++) { |
80f7c668 JP |
300 | err = __team_option_inst_add_option(team, dst_opts[i]); |
301 | if (err) | |
302 | goto inst_rollback; | |
358b8382 | 303 | list_add_tail(&dst_opts[i]->list, &team->option_list); |
b82b9183 | 304 | } |
358b8382 | 305 | |
2bba19ff | 306 | kfree(dst_opts); |
358b8382 JP |
307 | return 0; |
308 | ||
80f7c668 JP |
309 | inst_rollback: |
310 | for (i--; i >= 0; i--) | |
311 | __team_option_inst_del_option(team, dst_opts[i]); | |
312 | ||
313 | i = option_count - 1; | |
314 | alloc_rollback: | |
315 | for (i--; i >= 0; i--) | |
358b8382 JP |
316 | kfree(dst_opts[i]); |
317 | ||
2bba19ff | 318 | kfree(dst_opts); |
358b8382 | 319 | return err; |
3d249d4c | 320 | } |
358b8382 | 321 | |
b82b9183 JP |
322 | static void __team_options_mark_removed(struct team *team, |
323 | const struct team_option *option, | |
324 | size_t option_count) | |
325 | { | |
326 | int i; | |
327 | ||
328 | for (i = 0; i < option_count; i++, option++) { | |
329 | struct team_option *del_opt; | |
3d249d4c | 330 | |
b82b9183 | 331 | del_opt = __team_find_option(team, option->name); |
80f7c668 JP |
332 | if (del_opt) |
333 | __team_option_inst_mark_removed_option(team, del_opt); | |
b82b9183 JP |
334 | } |
335 | } | |
3d249d4c JP |
336 | |
337 | static void __team_options_unregister(struct team *team, | |
358b8382 | 338 | const struct team_option *option, |
3d249d4c JP |
339 | size_t option_count) |
340 | { | |
341 | int i; | |
342 | ||
358b8382 JP |
343 | for (i = 0; i < option_count; i++, option++) { |
344 | struct team_option *del_opt; | |
345 | ||
346 | del_opt = __team_find_option(team, option->name); | |
347 | if (del_opt) { | |
80f7c668 | 348 | __team_option_inst_del_option(team, del_opt); |
358b8382 JP |
349 | list_del(&del_opt->list); |
350 | kfree(del_opt); | |
351 | } | |
352 | } | |
3d249d4c JP |
353 | } |
354 | ||
b82b9183 JP |
355 | static void __team_options_change_check(struct team *team); |
356 | ||
357 | int team_options_register(struct team *team, | |
358 | const struct team_option *option, | |
359 | size_t option_count) | |
360 | { | |
361 | int err; | |
362 | ||
363 | err = __team_options_register(team, option, option_count); | |
364 | if (err) | |
365 | return err; | |
366 | __team_options_change_check(team); | |
367 | return 0; | |
368 | } | |
369 | EXPORT_SYMBOL(team_options_register); | |
370 | ||
358b8382 JP |
371 | void team_options_unregister(struct team *team, |
372 | const struct team_option *option, | |
3d249d4c JP |
373 | size_t option_count) |
374 | { | |
b82b9183 JP |
375 | __team_options_mark_removed(team, option, option_count); |
376 | __team_options_change_check(team); | |
3d249d4c | 377 | __team_options_unregister(team, option, option_count); |
3d249d4c JP |
378 | } |
379 | EXPORT_SYMBOL(team_options_unregister); | |
380 | ||
80f7c668 JP |
381 | static int team_option_get(struct team *team, |
382 | struct team_option_inst *opt_inst, | |
383 | struct team_gsetter_ctx *ctx) | |
384 | { | |
f82b959d JP |
385 | if (!opt_inst->option->getter) |
386 | return -EOPNOTSUPP; | |
80f7c668 JP |
387 | return opt_inst->option->getter(team, ctx); |
388 | } | |
389 | ||
390 | static int team_option_set(struct team *team, | |
391 | struct team_option_inst *opt_inst, | |
392 | struct team_gsetter_ctx *ctx) | |
3d249d4c | 393 | { |
f82b959d JP |
394 | if (!opt_inst->option->setter) |
395 | return -EOPNOTSUPP; | |
2fcdb2c9 | 396 | return opt_inst->option->setter(team, ctx); |
3d249d4c JP |
397 | } |
398 | ||
0f1aad2b JP |
399 | void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info) |
400 | { | |
401 | struct team_option_inst *opt_inst; | |
402 | ||
403 | opt_inst = container_of(opt_inst_info, struct team_option_inst, info); | |
404 | opt_inst->changed = true; | |
405 | } | |
406 | EXPORT_SYMBOL(team_option_inst_set_change); | |
407 | ||
408 | void team_options_change_check(struct team *team) | |
409 | { | |
410 | __team_options_change_check(team); | |
411 | } | |
412 | EXPORT_SYMBOL(team_options_change_check); | |
413 | ||
414 | ||
3d249d4c JP |
415 | /**************** |
416 | * Mode handling | |
417 | ****************/ | |
418 | ||
419 | static LIST_HEAD(mode_list); | |
420 | static DEFINE_SPINLOCK(mode_list_lock); | |
421 | ||
0402788a JP |
422 | struct team_mode_item { |
423 | struct list_head list; | |
424 | const struct team_mode *mode; | |
425 | }; | |
426 | ||
427 | static struct team_mode_item *__find_mode(const char *kind) | |
3d249d4c | 428 | { |
0402788a | 429 | struct team_mode_item *mitem; |
3d249d4c | 430 | |
0402788a JP |
431 | list_for_each_entry(mitem, &mode_list, list) { |
432 | if (strcmp(mitem->mode->kind, kind) == 0) | |
433 | return mitem; | |
3d249d4c JP |
434 | } |
435 | return NULL; | |
436 | } | |
437 | ||
438 | static bool is_good_mode_name(const char *name) | |
439 | { | |
440 | while (*name != '\0') { | |
441 | if (!isalpha(*name) && !isdigit(*name) && *name != '_') | |
442 | return false; | |
443 | name++; | |
444 | } | |
445 | return true; | |
446 | } | |
447 | ||
0402788a | 448 | int team_mode_register(const struct team_mode *mode) |
3d249d4c JP |
449 | { |
450 | int err = 0; | |
0402788a | 451 | struct team_mode_item *mitem; |
3d249d4c JP |
452 | |
453 | if (!is_good_mode_name(mode->kind) || | |
454 | mode->priv_size > TEAM_MODE_PRIV_SIZE) | |
455 | return -EINVAL; | |
0402788a JP |
456 | |
457 | mitem = kmalloc(sizeof(*mitem), GFP_KERNEL); | |
458 | if (!mitem) | |
459 | return -ENOMEM; | |
460 | ||
3d249d4c JP |
461 | spin_lock(&mode_list_lock); |
462 | if (__find_mode(mode->kind)) { | |
463 | err = -EEXIST; | |
0402788a | 464 | kfree(mitem); |
3d249d4c JP |
465 | goto unlock; |
466 | } | |
0402788a JP |
467 | mitem->mode = mode; |
468 | list_add_tail(&mitem->list, &mode_list); | |
3d249d4c JP |
469 | unlock: |
470 | spin_unlock(&mode_list_lock); | |
471 | return err; | |
472 | } | |
473 | EXPORT_SYMBOL(team_mode_register); | |
474 | ||
0402788a | 475 | void team_mode_unregister(const struct team_mode *mode) |
3d249d4c | 476 | { |
0402788a JP |
477 | struct team_mode_item *mitem; |
478 | ||
3d249d4c | 479 | spin_lock(&mode_list_lock); |
0402788a JP |
480 | mitem = __find_mode(mode->kind); |
481 | if (mitem) { | |
482 | list_del_init(&mitem->list); | |
483 | kfree(mitem); | |
484 | } | |
3d249d4c | 485 | spin_unlock(&mode_list_lock); |
3d249d4c JP |
486 | } |
487 | EXPORT_SYMBOL(team_mode_unregister); | |
488 | ||
0402788a | 489 | static const struct team_mode *team_mode_get(const char *kind) |
3d249d4c | 490 | { |
0402788a JP |
491 | struct team_mode_item *mitem; |
492 | const struct team_mode *mode = NULL; | |
3d249d4c JP |
493 | |
494 | spin_lock(&mode_list_lock); | |
0402788a JP |
495 | mitem = __find_mode(kind); |
496 | if (!mitem) { | |
3d249d4c JP |
497 | spin_unlock(&mode_list_lock); |
498 | request_module("team-mode-%s", kind); | |
499 | spin_lock(&mode_list_lock); | |
0402788a | 500 | mitem = __find_mode(kind); |
3d249d4c | 501 | } |
0402788a JP |
502 | if (mitem) { |
503 | mode = mitem->mode; | |
3d249d4c JP |
504 | if (!try_module_get(mode->owner)) |
505 | mode = NULL; | |
0402788a | 506 | } |
3d249d4c JP |
507 | |
508 | spin_unlock(&mode_list_lock); | |
509 | return mode; | |
510 | } | |
511 | ||
512 | static void team_mode_put(const struct team_mode *mode) | |
513 | { | |
514 | module_put(mode->owner); | |
515 | } | |
516 | ||
517 | static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) | |
518 | { | |
519 | dev_kfree_skb_any(skb); | |
520 | return false; | |
521 | } | |
522 | ||
2ea46599 | 523 | static rx_handler_result_t team_dummy_receive(struct team *team, |
524 | struct team_port *port, | |
525 | struct sk_buff *skb) | |
3d249d4c JP |
526 | { |
527 | return RX_HANDLER_ANOTHER; | |
528 | } | |
529 | ||
d299cd51 JP |
530 | static const struct team_mode __team_no_mode = { |
531 | .kind = "*NOMODE*", | |
532 | }; | |
533 | ||
534 | static bool team_is_mode_set(struct team *team) | |
535 | { | |
536 | return team->mode != &__team_no_mode; | |
537 | } | |
538 | ||
539 | static void team_set_no_mode(struct team *team) | |
540 | { | |
e185483e | 541 | team->user_carrier_enabled = false; |
d299cd51 JP |
542 | team->mode = &__team_no_mode; |
543 | } | |
544 | ||
735d381f | 545 | static void team_adjust_ops(struct team *team) |
3d249d4c JP |
546 | { |
547 | /* | |
548 | * To avoid checks in rx/tx skb paths, ensure here that non-null and | |
549 | * correct ops are always set. | |
550 | */ | |
551 | ||
735d381f | 552 | if (!team->en_port_count || !team_is_mode_set(team) || |
122bb046 | 553 | !team->mode->ops->transmit) |
3d249d4c JP |
554 | team->ops.transmit = team_dummy_transmit; |
555 | else | |
556 | team->ops.transmit = team->mode->ops->transmit; | |
557 | ||
735d381f | 558 | if (!team->en_port_count || !team_is_mode_set(team) || |
122bb046 | 559 | !team->mode->ops->receive) |
3d249d4c JP |
560 | team->ops.receive = team_dummy_receive; |
561 | else | |
562 | team->ops.receive = team->mode->ops->receive; | |
563 | } | |
564 | ||
565 | /* | |
566 | * We can benefit from the fact that it's ensured no port is present | |
567 | * at the time of mode change. Therefore no packets are in fly so there's no | |
568 | * need to set mode operations in any special way. | |
569 | */ | |
570 | static int __team_change_mode(struct team *team, | |
571 | const struct team_mode *new_mode) | |
572 | { | |
573 | /* Check if mode was previously set and do cleanup if so */ | |
d299cd51 | 574 | if (team_is_mode_set(team)) { |
3d249d4c JP |
575 | void (*exit_op)(struct team *team) = team->ops.exit; |
576 | ||
577 | /* Clear ops area so no callback is called any longer */ | |
578 | memset(&team->ops, 0, sizeof(struct team_mode_ops)); | |
579 | team_adjust_ops(team); | |
580 | ||
581 | if (exit_op) | |
582 | exit_op(team); | |
583 | team_mode_put(team->mode); | |
d299cd51 | 584 | team_set_no_mode(team); |
3d249d4c JP |
585 | /* zero private data area */ |
586 | memset(&team->mode_priv, 0, | |
587 | sizeof(struct team) - offsetof(struct team, mode_priv)); | |
588 | } | |
589 | ||
590 | if (!new_mode) | |
591 | return 0; | |
592 | ||
593 | if (new_mode->ops->init) { | |
594 | int err; | |
595 | ||
596 | err = new_mode->ops->init(team); | |
597 | if (err) | |
598 | return err; | |
599 | } | |
600 | ||
601 | team->mode = new_mode; | |
602 | memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); | |
603 | team_adjust_ops(team); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | static int team_change_mode(struct team *team, const char *kind) | |
609 | { | |
0402788a | 610 | const struct team_mode *new_mode; |
3d249d4c JP |
611 | struct net_device *dev = team->dev; |
612 | int err; | |
613 | ||
614 | if (!list_empty(&team->port_list)) { | |
615 | netdev_err(dev, "No ports can be present during mode change\n"); | |
616 | return -EBUSY; | |
617 | } | |
618 | ||
d299cd51 | 619 | if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) { |
3d249d4c JP |
620 | netdev_err(dev, "Unable to change to the same mode the team is in\n"); |
621 | return -EINVAL; | |
622 | } | |
623 | ||
624 | new_mode = team_mode_get(kind); | |
625 | if (!new_mode) { | |
626 | netdev_err(dev, "Mode \"%s\" not found\n", kind); | |
627 | return -EINVAL; | |
628 | } | |
629 | ||
630 | err = __team_change_mode(team, new_mode); | |
631 | if (err) { | |
632 | netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); | |
633 | team_mode_put(new_mode); | |
634 | return err; | |
635 | } | |
636 | ||
637 | netdev_info(dev, "Mode changed to \"%s\"\n", kind); | |
638 | return 0; | |
639 | } | |
640 | ||
641 | ||
fc423ff0 JP |
642 | /********************* |
643 | * Peers notification | |
644 | *********************/ | |
645 | ||
646 | static void team_notify_peers_work(struct work_struct *work) | |
647 | { | |
648 | struct team *team; | |
b0d11b42 | 649 | int val; |
fc423ff0 JP |
650 | |
651 | team = container_of(work, struct team, notify_peers.dw.work); | |
652 | ||
653 | if (!rtnl_trylock()) { | |
654 | schedule_delayed_work(&team->notify_peers.dw, 0); | |
655 | return; | |
656 | } | |
b0d11b42 JP |
657 | val = atomic_dec_if_positive(&team->notify_peers.count_pending); |
658 | if (val < 0) { | |
659 | rtnl_unlock(); | |
660 | return; | |
661 | } | |
fc423ff0 JP |
662 | call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev); |
663 | rtnl_unlock(); | |
b0d11b42 | 664 | if (val) |
fc423ff0 JP |
665 | schedule_delayed_work(&team->notify_peers.dw, |
666 | msecs_to_jiffies(team->notify_peers.interval)); | |
667 | } | |
668 | ||
669 | static void team_notify_peers(struct team *team) | |
670 | { | |
671 | if (!team->notify_peers.count || !netif_running(team->dev)) | |
672 | return; | |
47549650 | 673 | atomic_add(team->notify_peers.count, &team->notify_peers.count_pending); |
fc423ff0 JP |
674 | schedule_delayed_work(&team->notify_peers.dw, 0); |
675 | } | |
676 | ||
677 | static void team_notify_peers_init(struct team *team) | |
678 | { | |
679 | INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work); | |
680 | } | |
681 | ||
682 | static void team_notify_peers_fini(struct team *team) | |
683 | { | |
684 | cancel_delayed_work_sync(&team->notify_peers.dw); | |
685 | } | |
686 | ||
687 | ||
492b200e JP |
688 | /******************************* |
689 | * Send multicast group rejoins | |
690 | *******************************/ | |
691 | ||
692 | static void team_mcast_rejoin_work(struct work_struct *work) | |
693 | { | |
694 | struct team *team; | |
b0d11b42 | 695 | int val; |
492b200e JP |
696 | |
697 | team = container_of(work, struct team, mcast_rejoin.dw.work); | |
698 | ||
699 | if (!rtnl_trylock()) { | |
700 | schedule_delayed_work(&team->mcast_rejoin.dw, 0); | |
701 | return; | |
702 | } | |
b0d11b42 JP |
703 | val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending); |
704 | if (val < 0) { | |
705 | rtnl_unlock(); | |
706 | return; | |
707 | } | |
492b200e JP |
708 | call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev); |
709 | rtnl_unlock(); | |
b0d11b42 | 710 | if (val) |
492b200e JP |
711 | schedule_delayed_work(&team->mcast_rejoin.dw, |
712 | msecs_to_jiffies(team->mcast_rejoin.interval)); | |
713 | } | |
714 | ||
715 | static void team_mcast_rejoin(struct team *team) | |
716 | { | |
717 | if (!team->mcast_rejoin.count || !netif_running(team->dev)) | |
718 | return; | |
47549650 | 719 | atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending); |
492b200e JP |
720 | schedule_delayed_work(&team->mcast_rejoin.dw, 0); |
721 | } | |
722 | ||
723 | static void team_mcast_rejoin_init(struct team *team) | |
724 | { | |
725 | INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work); | |
726 | } | |
727 | ||
728 | static void team_mcast_rejoin_fini(struct team *team) | |
729 | { | |
730 | cancel_delayed_work_sync(&team->mcast_rejoin.dw); | |
731 | } | |
732 | ||
733 | ||
3d249d4c JP |
734 | /************************ |
735 | * Rx path frame handler | |
736 | ************************/ | |
737 | ||
738 | /* note: already called with rcu_read_lock */ | |
739 | static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) | |
740 | { | |
741 | struct sk_buff *skb = *pskb; | |
742 | struct team_port *port; | |
743 | struct team *team; | |
744 | rx_handler_result_t res; | |
745 | ||
746 | skb = skb_share_check(skb, GFP_ATOMIC); | |
747 | if (!skb) | |
748 | return RX_HANDLER_CONSUMED; | |
749 | ||
750 | *pskb = skb; | |
751 | ||
752 | port = team_port_get_rcu(skb->dev); | |
753 | team = port->team; | |
19a0b58e JP |
754 | if (!team_port_enabled(port)) { |
755 | /* allow exact match delivery for disabled ports */ | |
756 | res = RX_HANDLER_EXACT; | |
757 | } else { | |
758 | res = team->ops.receive(team, port, skb); | |
759 | } | |
3d249d4c JP |
760 | if (res == RX_HANDLER_ANOTHER) { |
761 | struct team_pcpu_stats *pcpu_stats; | |
762 | ||
763 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
764 | u64_stats_update_begin(&pcpu_stats->syncp); | |
765 | pcpu_stats->rx_packets++; | |
766 | pcpu_stats->rx_bytes += skb->len; | |
767 | if (skb->pkt_type == PACKET_MULTICAST) | |
768 | pcpu_stats->rx_multicast++; | |
769 | u64_stats_update_end(&pcpu_stats->syncp); | |
770 | ||
771 | skb->dev = team->dev; | |
bb63daf9 JW |
772 | } else if (res == RX_HANDLER_EXACT) { |
773 | this_cpu_inc(team->pcpu_stats->rx_nohandler); | |
3d249d4c JP |
774 | } else { |
775 | this_cpu_inc(team->pcpu_stats->rx_dropped); | |
776 | } | |
777 | ||
778 | return res; | |
779 | } | |
780 | ||
781 | ||
8ff5105a JP |
782 | /************************************* |
783 | * Multiqueue Tx port select override | |
784 | *************************************/ | |
785 | ||
786 | static int team_queue_override_init(struct team *team) | |
787 | { | |
788 | struct list_head *listarr; | |
789 | unsigned int queue_cnt = team->dev->num_tx_queues - 1; | |
790 | unsigned int i; | |
791 | ||
792 | if (!queue_cnt) | |
793 | return 0; | |
794 | listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL); | |
795 | if (!listarr) | |
796 | return -ENOMEM; | |
797 | team->qom_lists = listarr; | |
798 | for (i = 0; i < queue_cnt; i++) | |
799 | INIT_LIST_HEAD(listarr++); | |
800 | return 0; | |
801 | } | |
802 | ||
803 | static void team_queue_override_fini(struct team *team) | |
804 | { | |
805 | kfree(team->qom_lists); | |
806 | } | |
807 | ||
808 | static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id) | |
809 | { | |
810 | return &team->qom_lists[queue_id - 1]; | |
811 | } | |
812 | ||
813 | /* | |
814 | * note: already called with rcu_read_lock | |
815 | */ | |
816 | static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb) | |
817 | { | |
818 | struct list_head *qom_list; | |
819 | struct team_port *port; | |
820 | ||
821 | if (!team->queue_override_enabled || !skb->queue_mapping) | |
822 | return false; | |
823 | qom_list = __team_get_qom_list(team, skb->queue_mapping); | |
824 | list_for_each_entry_rcu(port, qom_list, qom_list) { | |
825 | if (!team_dev_queue_xmit(team, port, skb)) | |
826 | return true; | |
827 | } | |
828 | return false; | |
829 | } | |
830 | ||
831 | static void __team_queue_override_port_del(struct team *team, | |
832 | struct team_port *port) | |
833 | { | |
6c31ff36 JP |
834 | if (!port->queue_id) |
835 | return; | |
8ff5105a | 836 | list_del_rcu(&port->qom_list); |
8ff5105a JP |
837 | } |
838 | ||
839 | static bool team_queue_override_port_has_gt_prio_than(struct team_port *port, | |
840 | struct team_port *cur) | |
841 | { | |
842 | if (port->priority < cur->priority) | |
843 | return true; | |
844 | if (port->priority > cur->priority) | |
845 | return false; | |
846 | if (port->index < cur->index) | |
847 | return true; | |
848 | return false; | |
849 | } | |
850 | ||
851 | static void __team_queue_override_port_add(struct team *team, | |
852 | struct team_port *port) | |
853 | { | |
854 | struct team_port *cur; | |
855 | struct list_head *qom_list; | |
856 | struct list_head *node; | |
857 | ||
6c31ff36 | 858 | if (!port->queue_id) |
8ff5105a | 859 | return; |
8ff5105a JP |
860 | qom_list = __team_get_qom_list(team, port->queue_id); |
861 | node = qom_list; | |
862 | list_for_each_entry(cur, qom_list, qom_list) { | |
863 | if (team_queue_override_port_has_gt_prio_than(port, cur)) | |
864 | break; | |
865 | node = &cur->qom_list; | |
866 | } | |
867 | list_add_tail_rcu(&port->qom_list, node); | |
868 | } | |
869 | ||
870 | static void __team_queue_override_enabled_check(struct team *team) | |
871 | { | |
872 | struct team_port *port; | |
873 | bool enabled = false; | |
874 | ||
875 | list_for_each_entry(port, &team->port_list, list) { | |
6c31ff36 | 876 | if (port->queue_id) { |
8ff5105a JP |
877 | enabled = true; |
878 | break; | |
879 | } | |
880 | } | |
881 | if (enabled == team->queue_override_enabled) | |
882 | return; | |
883 | netdev_dbg(team->dev, "%s queue override\n", | |
884 | enabled ? "Enabling" : "Disabling"); | |
885 | team->queue_override_enabled = enabled; | |
886 | } | |
887 | ||
6c31ff36 JP |
888 | static void team_queue_override_port_prio_changed(struct team *team, |
889 | struct team_port *port) | |
8ff5105a | 890 | { |
6c31ff36 JP |
891 | if (!port->queue_id || team_port_enabled(port)) |
892 | return; | |
8ff5105a JP |
893 | __team_queue_override_port_del(team, port); |
894 | __team_queue_override_port_add(team, port); | |
895 | __team_queue_override_enabled_check(team); | |
896 | } | |
897 | ||
6c31ff36 JP |
898 | static void team_queue_override_port_change_queue_id(struct team *team, |
899 | struct team_port *port, | |
900 | u16 new_queue_id) | |
901 | { | |
902 | if (team_port_enabled(port)) { | |
903 | __team_queue_override_port_del(team, port); | |
904 | port->queue_id = new_queue_id; | |
905 | __team_queue_override_port_add(team, port); | |
906 | __team_queue_override_enabled_check(team); | |
907 | } else { | |
908 | port->queue_id = new_queue_id; | |
909 | } | |
910 | } | |
911 | ||
912 | static void team_queue_override_port_add(struct team *team, | |
913 | struct team_port *port) | |
914 | { | |
915 | __team_queue_override_port_add(team, port); | |
916 | __team_queue_override_enabled_check(team); | |
917 | } | |
918 | ||
919 | static void team_queue_override_port_del(struct team *team, | |
920 | struct team_port *port) | |
921 | { | |
922 | __team_queue_override_port_del(team, port); | |
923 | __team_queue_override_enabled_check(team); | |
924 | } | |
925 | ||
8ff5105a | 926 | |
3d249d4c JP |
927 | /**************** |
928 | * Port handling | |
929 | ****************/ | |
930 | ||
931 | static bool team_port_find(const struct team *team, | |
932 | const struct team_port *port) | |
933 | { | |
934 | struct team_port *cur; | |
935 | ||
936 | list_for_each_entry(cur, &team->port_list, list) | |
937 | if (cur == port) | |
938 | return true; | |
939 | return false; | |
940 | } | |
941 | ||
942 | /* | |
19a0b58e JP |
943 | * Enable/disable port by adding to enabled port hashlist and setting |
944 | * port->index (Might be racy so reader could see incorrect ifindex when | |
945 | * processing a flying packet, but that is not a problem). Write guarded | |
946 | * by team->lock. | |
3d249d4c | 947 | */ |
19a0b58e JP |
948 | static void team_port_enable(struct team *team, |
949 | struct team_port *port) | |
3d249d4c | 950 | { |
19a0b58e JP |
951 | if (team_port_enabled(port)) |
952 | return; | |
953 | port->index = team->en_port_count++; | |
3d249d4c JP |
954 | hlist_add_head_rcu(&port->hlist, |
955 | team_port_index_hash(team, port->index)); | |
122bb046 | 956 | team_adjust_ops(team); |
6c31ff36 | 957 | team_queue_override_port_add(team, port); |
4bccfd17 JP |
958 | if (team->ops.port_enabled) |
959 | team->ops.port_enabled(team, port); | |
fc423ff0 | 960 | team_notify_peers(team); |
492b200e | 961 | team_mcast_rejoin(team); |
3a0d6c5a | 962 | team_lower_state_changed(port); |
3d249d4c JP |
963 | } |
964 | ||
965 | static void __reconstruct_port_hlist(struct team *team, int rm_index) | |
966 | { | |
967 | int i; | |
968 | struct team_port *port; | |
969 | ||
19a0b58e | 970 | for (i = rm_index + 1; i < team->en_port_count; i++) { |
3d249d4c JP |
971 | port = team_get_port_by_index(team, i); |
972 | hlist_del_rcu(&port->hlist); | |
973 | port->index--; | |
974 | hlist_add_head_rcu(&port->hlist, | |
975 | team_port_index_hash(team, port->index)); | |
976 | } | |
977 | } | |
978 | ||
19a0b58e JP |
979 | static void team_port_disable(struct team *team, |
980 | struct team_port *port) | |
3d249d4c | 981 | { |
19a0b58e JP |
982 | if (!team_port_enabled(port)) |
983 | return; | |
4bccfd17 JP |
984 | if (team->ops.port_disabled) |
985 | team->ops.port_disabled(team, port); | |
3d249d4c | 986 | hlist_del_rcu(&port->hlist); |
122bb046 | 987 | __reconstruct_port_hlist(team, port->index); |
19a0b58e | 988 | port->index = -1; |
122bb046 | 989 | team->en_port_count--; |
735d381f JP |
990 | team_queue_override_port_del(team, port); |
991 | team_adjust_ops(team); | |
fc423ff0 | 992 | team_notify_peers(team); |
492b200e | 993 | team_mcast_rejoin(team); |
3a0d6c5a | 994 | team_lower_state_changed(port); |
3d249d4c JP |
995 | } |
996 | ||
a188222b | 997 | #define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ |
3d249d4c JP |
998 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ |
999 | NETIF_F_HIGHDMA | NETIF_F_LRO) | |
1000 | ||
3268e5cb EBE |
1001 | #define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ |
1002 | NETIF_F_RXCSUM | NETIF_F_ALL_TSO) | |
1003 | ||
16cf72bb | 1004 | static void __team_compute_features(struct team *team) |
3d249d4c JP |
1005 | { |
1006 | struct team_port *port; | |
3625920b | 1007 | u32 vlan_features = TEAM_VLAN_FEATURES & NETIF_F_ALL_FOR_ALL; |
3268e5cb | 1008 | netdev_features_t enc_features = TEAM_ENC_FEATURES; |
3d249d4c | 1009 | unsigned short max_hard_header_len = ETH_HLEN; |
02875878 ED |
1010 | unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE | |
1011 | IFF_XMIT_DST_RELEASE_PERM; | |
3d249d4c JP |
1012 | |
1013 | list_for_each_entry(port, &team->port_list, list) { | |
1014 | vlan_features = netdev_increment_features(vlan_features, | |
1015 | port->dev->vlan_features, | |
1016 | TEAM_VLAN_FEATURES); | |
3268e5cb EBE |
1017 | enc_features = |
1018 | netdev_increment_features(enc_features, | |
1019 | port->dev->hw_enc_features, | |
1020 | TEAM_ENC_FEATURES); | |
1021 | ||
3d249d4c | 1022 | |
dc905951 | 1023 | dst_release_flag &= port->dev->priv_flags; |
3d249d4c JP |
1024 | if (port->dev->hard_header_len > max_hard_header_len) |
1025 | max_hard_header_len = port->dev->hard_header_len; | |
1026 | } | |
1027 | ||
1028 | team->dev->vlan_features = vlan_features; | |
8eea1ca8 WB |
1029 | team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL | |
1030 | NETIF_F_GSO_UDP_L4; | |
3d249d4c JP |
1031 | team->dev->hard_header_len = max_hard_header_len; |
1032 | ||
02875878 ED |
1033 | team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
1034 | if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM)) | |
1035 | team->dev->priv_flags |= IFF_XMIT_DST_RELEASE; | |
f6988cb6 | 1036 | } |
dc905951 | 1037 | |
3d249d4c JP |
1038 | static void team_compute_features(struct team *team) |
1039 | { | |
61dc3461 | 1040 | mutex_lock(&team->lock); |
16cf72bb | 1041 | __team_compute_features(team); |
61dc3461 | 1042 | mutex_unlock(&team->lock); |
f6988cb6 | 1043 | netdev_change_features(team->dev); |
3d249d4c JP |
1044 | } |
1045 | ||
1046 | static int team_port_enter(struct team *team, struct team_port *port) | |
1047 | { | |
1048 | int err = 0; | |
1049 | ||
1050 | dev_hold(team->dev); | |
3d249d4c JP |
1051 | if (team->ops.port_enter) { |
1052 | err = team->ops.port_enter(team, port); | |
1053 | if (err) { | |
1054 | netdev_err(team->dev, "Device %s failed to enter team mode\n", | |
1055 | port->dev->name); | |
1056 | goto err_port_enter; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | return 0; | |
1061 | ||
1062 | err_port_enter: | |
3d249d4c JP |
1063 | dev_put(team->dev); |
1064 | ||
1065 | return err; | |
1066 | } | |
1067 | ||
1068 | static void team_port_leave(struct team *team, struct team_port *port) | |
1069 | { | |
1070 | if (team->ops.port_leave) | |
1071 | team->ops.port_leave(team, port); | |
3d249d4c JP |
1072 | dev_put(team->dev); |
1073 | } | |
1074 | ||
bd2d0837 | 1075 | #ifdef CONFIG_NET_POLL_CONTROLLER |
9cf2f437 | 1076 | static int __team_port_enable_netpoll(struct team_port *port) |
bd2d0837 JP |
1077 | { |
1078 | struct netpoll *np; | |
1079 | int err; | |
1080 | ||
a8779ec1 | 1081 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
bd2d0837 JP |
1082 | if (!np) |
1083 | return -ENOMEM; | |
1084 | ||
a8779ec1 | 1085 | err = __netpoll_setup(np, port->dev); |
bd2d0837 JP |
1086 | if (err) { |
1087 | kfree(np); | |
1088 | return err; | |
1089 | } | |
1090 | port->np = np; | |
1091 | return err; | |
1092 | } | |
1093 | ||
9cf2f437 XL |
1094 | static int team_port_enable_netpoll(struct team_port *port) |
1095 | { | |
1096 | if (!port->team->dev->npinfo) | |
1097 | return 0; | |
1098 | ||
1099 | return __team_port_enable_netpoll(port); | |
1100 | } | |
1101 | ||
bd2d0837 JP |
1102 | static void team_port_disable_netpoll(struct team_port *port) |
1103 | { | |
1104 | struct netpoll *np = port->np; | |
1105 | ||
1106 | if (!np) | |
1107 | return; | |
1108 | port->np = NULL; | |
1109 | ||
1110 | /* Wait for transmitting packets to finish before freeing. */ | |
1111 | synchronize_rcu_bh(); | |
1112 | __netpoll_cleanup(np); | |
1113 | kfree(np); | |
1114 | } | |
bd2d0837 | 1115 | #else |
9cf2f437 | 1116 | static int team_port_enable_netpoll(struct team_port *port) |
bd2d0837 JP |
1117 | { |
1118 | return 0; | |
1119 | } | |
1120 | static void team_port_disable_netpoll(struct team_port *port) | |
1121 | { | |
1122 | } | |
bd2d0837 JP |
1123 | #endif |
1124 | ||
44d15d93 IS |
1125 | static int team_upper_dev_link(struct team *team, struct team_port *port, |
1126 | struct netlink_ext_ack *extack) | |
d7d3c051 | 1127 | { |
8fd72856 | 1128 | struct netdev_lag_upper_info lag_upper_info; |
d7d3c051 JP |
1129 | int err; |
1130 | ||
8fd72856 | 1131 | lag_upper_info.tx_type = team->mode->lag_tx_type; |
f44aa9ef | 1132 | lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN; |
8fd72856 | 1133 | err = netdev_master_upper_dev_link(port->dev, team->dev, NULL, |
44d15d93 | 1134 | &lag_upper_info, extack); |
d7d3c051 JP |
1135 | if (err) |
1136 | return err; | |
8fd72856 | 1137 | port->dev->priv_flags |= IFF_TEAM_PORT; |
d7d3c051 JP |
1138 | return 0; |
1139 | } | |
1140 | ||
8fd72856 | 1141 | static void team_upper_dev_unlink(struct team *team, struct team_port *port) |
d7d3c051 | 1142 | { |
8fd72856 JP |
1143 | netdev_upper_dev_unlink(port->dev, team->dev); |
1144 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
d7d3c051 JP |
1145 | } |
1146 | ||
10f3f51d | 1147 | static void __team_port_change_port_added(struct team_port *port, bool linkup); |
1d76efe1 JP |
1148 | static int team_dev_type_check_change(struct net_device *dev, |
1149 | struct net_device *port_dev); | |
3d249d4c | 1150 | |
44d15d93 IS |
1151 | static int team_port_add(struct team *team, struct net_device *port_dev, |
1152 | struct netlink_ext_ack *extack) | |
3d249d4c JP |
1153 | { |
1154 | struct net_device *dev = team->dev; | |
1155 | struct team_port *port; | |
1156 | char *portname = port_dev->name; | |
1157 | int err; | |
1158 | ||
1d76efe1 | 1159 | if (port_dev->flags & IFF_LOOPBACK) { |
44d15d93 | 1160 | NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port"); |
1d76efe1 | 1161 | netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n", |
3d249d4c JP |
1162 | portname); |
1163 | return -EINVAL; | |
1164 | } | |
1165 | ||
1166 | if (team_port_exists(port_dev)) { | |
44d15d93 | 1167 | NL_SET_ERR_MSG(extack, "Device is already a port of a team device"); |
3d249d4c JP |
1168 | netdev_err(dev, "Device %s is already a port " |
1169 | "of a team device\n", portname); | |
1170 | return -EBUSY; | |
1171 | } | |
1172 | ||
2c33bb37 JP |
1173 | if (port_dev->features & NETIF_F_VLAN_CHALLENGED && |
1174 | vlan_uses_dev(dev)) { | |
44d15d93 | 1175 | NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up"); |
2c33bb37 JP |
1176 | netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n", |
1177 | portname); | |
1178 | return -EPERM; | |
1179 | } | |
1180 | ||
1d76efe1 JP |
1181 | err = team_dev_type_check_change(dev, port_dev); |
1182 | if (err) | |
1183 | return err; | |
1184 | ||
3d249d4c | 1185 | if (port_dev->flags & IFF_UP) { |
44d15d93 | 1186 | NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port"); |
3d249d4c JP |
1187 | netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", |
1188 | portname); | |
1189 | return -EBUSY; | |
1190 | } | |
1191 | ||
5149ee58 JP |
1192 | port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size, |
1193 | GFP_KERNEL); | |
3d249d4c JP |
1194 | if (!port) |
1195 | return -ENOMEM; | |
1196 | ||
1197 | port->dev = port_dev; | |
1198 | port->team = team; | |
8ff5105a | 1199 | INIT_LIST_HEAD(&port->qom_list); |
3d249d4c JP |
1200 | |
1201 | port->orig.mtu = port_dev->mtu; | |
1202 | err = dev_set_mtu(port_dev, dev->mtu); | |
1203 | if (err) { | |
1204 | netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); | |
1205 | goto err_set_mtu; | |
1206 | } | |
1207 | ||
1d76efe1 | 1208 | memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len); |
3d249d4c JP |
1209 | |
1210 | err = team_port_enter(team, port); | |
1211 | if (err) { | |
1212 | netdev_err(dev, "Device %s failed to enter team mode\n", | |
1213 | portname); | |
1214 | goto err_port_enter; | |
1215 | } | |
1216 | ||
1217 | err = dev_open(port_dev); | |
1218 | if (err) { | |
1219 | netdev_dbg(dev, "Device %s opening failed\n", | |
1220 | portname); | |
1221 | goto err_dev_open; | |
1222 | } | |
1223 | ||
57459185 JP |
1224 | err = vlan_vids_add_by_dev(port_dev, dev); |
1225 | if (err) { | |
1226 | netdev_err(dev, "Failed to add vlan ids to device %s\n", | |
1227 | portname); | |
1228 | goto err_vids_add; | |
1229 | } | |
1230 | ||
9cf2f437 | 1231 | err = team_port_enable_netpoll(port); |
0fb52a27 | 1232 | if (err) { |
1233 | netdev_err(dev, "Failed to enable netpoll on device %s\n", | |
1234 | portname); | |
1235 | goto err_enable_netpoll; | |
bd2d0837 JP |
1236 | } |
1237 | ||
fbe168ba MK |
1238 | if (!(dev->features & NETIF_F_LRO)) |
1239 | dev_disable_lro(port_dev); | |
1240 | ||
3d249d4c JP |
1241 | err = netdev_rx_handler_register(port_dev, team_handle_frame, |
1242 | port); | |
1243 | if (err) { | |
1244 | netdev_err(dev, "Device %s failed to register rx_handler\n", | |
1245 | portname); | |
1246 | goto err_handler_register; | |
1247 | } | |
1248 | ||
44d15d93 | 1249 | err = team_upper_dev_link(team, port, extack); |
d7d3c051 JP |
1250 | if (err) { |
1251 | netdev_err(dev, "Device %s failed to set upper link\n", | |
1252 | portname); | |
1253 | goto err_set_upper_link; | |
1254 | } | |
1255 | ||
35b384bd | 1256 | err = __team_option_inst_add_port(team, port); |
80f7c668 JP |
1257 | if (err) { |
1258 | netdev_err(dev, "Device %s failed to add per-port options\n", | |
1259 | portname); | |
1260 | goto err_option_port_add; | |
1261 | } | |
1262 | ||
982cf3b3 XL |
1263 | netif_addr_lock_bh(dev); |
1264 | dev_uc_sync_multiple(port_dev, dev); | |
1265 | dev_mc_sync_multiple(port_dev, dev); | |
1266 | netif_addr_unlock_bh(dev); | |
1267 | ||
19a0b58e | 1268 | port->index = -1; |
19a0b58e | 1269 | list_add_tail_rcu(&port->list, &team->port_list); |
72df935d | 1270 | team_port_enable(team, port); |
3d249d4c | 1271 | __team_compute_features(team); |
10f3f51d | 1272 | __team_port_change_port_added(port, !!netif_carrier_ok(port_dev)); |
35b384bd | 1273 | __team_options_change_check(team); |
3d249d4c JP |
1274 | |
1275 | netdev_info(dev, "Port device %s added\n", portname); | |
1276 | ||
1277 | return 0; | |
1278 | ||
80f7c668 | 1279 | err_option_port_add: |
8fd72856 | 1280 | team_upper_dev_unlink(team, port); |
d7d3c051 JP |
1281 | |
1282 | err_set_upper_link: | |
80f7c668 JP |
1283 | netdev_rx_handler_unregister(port_dev); |
1284 | ||
3d249d4c | 1285 | err_handler_register: |
bd2d0837 JP |
1286 | team_port_disable_netpoll(port); |
1287 | ||
1288 | err_enable_netpoll: | |
57459185 JP |
1289 | vlan_vids_del_by_dev(port_dev, dev); |
1290 | ||
1291 | err_vids_add: | |
3d249d4c JP |
1292 | dev_close(port_dev); |
1293 | ||
1294 | err_dev_open: | |
1295 | team_port_leave(team, port); | |
1d76efe1 | 1296 | team_port_set_orig_dev_addr(port); |
3d249d4c JP |
1297 | |
1298 | err_port_enter: | |
1299 | dev_set_mtu(port_dev, port->orig.mtu); | |
1300 | ||
1301 | err_set_mtu: | |
1302 | kfree(port); | |
1303 | ||
1304 | return err; | |
1305 | } | |
1306 | ||
10f3f51d JP |
1307 | static void __team_port_change_port_removed(struct team_port *port); |
1308 | ||
3d249d4c JP |
1309 | static int team_port_del(struct team *team, struct net_device *port_dev) |
1310 | { | |
1311 | struct net_device *dev = team->dev; | |
1312 | struct team_port *port; | |
1313 | char *portname = port_dev->name; | |
1314 | ||
1315 | port = team_port_get_rtnl(port_dev); | |
1316 | if (!port || !team_port_find(team, port)) { | |
1317 | netdev_err(dev, "Device %s does not act as a port of this team\n", | |
1318 | portname); | |
1319 | return -ENOENT; | |
1320 | } | |
1321 | ||
19a0b58e JP |
1322 | team_port_disable(team, port); |
1323 | list_del_rcu(&port->list); | |
8fd72856 | 1324 | team_upper_dev_unlink(team, port); |
3d249d4c | 1325 | netdev_rx_handler_unregister(port_dev); |
bd2d0837 | 1326 | team_port_disable_netpoll(port); |
57459185 | 1327 | vlan_vids_del_by_dev(port_dev, dev); |
ba81276b VY |
1328 | dev_uc_unsync(port_dev, dev); |
1329 | dev_mc_unsync(port_dev, dev); | |
3d249d4c JP |
1330 | dev_close(port_dev); |
1331 | team_port_leave(team, port); | |
c3969d80 JP |
1332 | |
1333 | __team_option_inst_mark_removed_port(team, port); | |
1334 | __team_options_change_check(team); | |
1335 | __team_option_inst_del_port(team, port); | |
1336 | __team_port_change_port_removed(port); | |
1337 | ||
1d76efe1 | 1338 | team_port_set_orig_dev_addr(port); |
3d249d4c | 1339 | dev_set_mtu(port_dev, port->orig.mtu); |
d80b35be | 1340 | kfree_rcu(port, rcu); |
3d249d4c JP |
1341 | netdev_info(dev, "Port device %s removed\n", portname); |
1342 | __team_compute_features(team); | |
1343 | ||
1344 | return 0; | |
1345 | } | |
1346 | ||
1347 | ||
1348 | /***************** | |
1349 | * Net device ops | |
1350 | *****************/ | |
1351 | ||
80f7c668 | 1352 | static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 1353 | { |
d299cd51 | 1354 | ctx->data.str_val = team->mode->kind; |
3d249d4c JP |
1355 | return 0; |
1356 | } | |
1357 | ||
80f7c668 | 1358 | static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 1359 | { |
80f7c668 | 1360 | return team_change_mode(team, ctx->data.str_val); |
3d249d4c JP |
1361 | } |
1362 | ||
fc423ff0 JP |
1363 | static int team_notify_peers_count_get(struct team *team, |
1364 | struct team_gsetter_ctx *ctx) | |
1365 | { | |
1366 | ctx->data.u32_val = team->notify_peers.count; | |
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | static int team_notify_peers_count_set(struct team *team, | |
1371 | struct team_gsetter_ctx *ctx) | |
1372 | { | |
1373 | team->notify_peers.count = ctx->data.u32_val; | |
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | static int team_notify_peers_interval_get(struct team *team, | |
1378 | struct team_gsetter_ctx *ctx) | |
1379 | { | |
1380 | ctx->data.u32_val = team->notify_peers.interval; | |
1381 | return 0; | |
1382 | } | |
1383 | ||
1384 | static int team_notify_peers_interval_set(struct team *team, | |
1385 | struct team_gsetter_ctx *ctx) | |
1386 | { | |
1387 | team->notify_peers.interval = ctx->data.u32_val; | |
1388 | return 0; | |
1389 | } | |
1390 | ||
492b200e JP |
1391 | static int team_mcast_rejoin_count_get(struct team *team, |
1392 | struct team_gsetter_ctx *ctx) | |
1393 | { | |
1394 | ctx->data.u32_val = team->mcast_rejoin.count; | |
1395 | return 0; | |
1396 | } | |
1397 | ||
1398 | static int team_mcast_rejoin_count_set(struct team *team, | |
1399 | struct team_gsetter_ctx *ctx) | |
1400 | { | |
1401 | team->mcast_rejoin.count = ctx->data.u32_val; | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | static int team_mcast_rejoin_interval_get(struct team *team, | |
1406 | struct team_gsetter_ctx *ctx) | |
1407 | { | |
1408 | ctx->data.u32_val = team->mcast_rejoin.interval; | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | static int team_mcast_rejoin_interval_set(struct team *team, | |
1413 | struct team_gsetter_ctx *ctx) | |
1414 | { | |
1415 | team->mcast_rejoin.interval = ctx->data.u32_val; | |
1416 | return 0; | |
1417 | } | |
1418 | ||
acd69962 JP |
1419 | static int team_port_en_option_get(struct team *team, |
1420 | struct team_gsetter_ctx *ctx) | |
1421 | { | |
85d59a87 JP |
1422 | struct team_port *port = ctx->info->port; |
1423 | ||
1424 | ctx->data.bool_val = team_port_enabled(port); | |
acd69962 JP |
1425 | return 0; |
1426 | } | |
1427 | ||
1428 | static int team_port_en_option_set(struct team *team, | |
1429 | struct team_gsetter_ctx *ctx) | |
1430 | { | |
85d59a87 JP |
1431 | struct team_port *port = ctx->info->port; |
1432 | ||
acd69962 | 1433 | if (ctx->data.bool_val) |
85d59a87 | 1434 | team_port_enable(team, port); |
acd69962 | 1435 | else |
85d59a87 | 1436 | team_port_disable(team, port); |
acd69962 JP |
1437 | return 0; |
1438 | } | |
1439 | ||
71472ec1 JP |
1440 | static int team_user_linkup_option_get(struct team *team, |
1441 | struct team_gsetter_ctx *ctx) | |
1442 | { | |
85d59a87 JP |
1443 | struct team_port *port = ctx->info->port; |
1444 | ||
1445 | ctx->data.bool_val = port->user.linkup; | |
71472ec1 JP |
1446 | return 0; |
1447 | } | |
1448 | ||
f5e0d343 JP |
1449 | static void __team_carrier_check(struct team *team); |
1450 | ||
71472ec1 JP |
1451 | static int team_user_linkup_option_set(struct team *team, |
1452 | struct team_gsetter_ctx *ctx) | |
1453 | { | |
85d59a87 JP |
1454 | struct team_port *port = ctx->info->port; |
1455 | ||
1456 | port->user.linkup = ctx->data.bool_val; | |
1457 | team_refresh_port_linkup(port); | |
f5e0d343 | 1458 | __team_carrier_check(port->team); |
71472ec1 JP |
1459 | return 0; |
1460 | } | |
1461 | ||
1462 | static int team_user_linkup_en_option_get(struct team *team, | |
1463 | struct team_gsetter_ctx *ctx) | |
1464 | { | |
85d59a87 | 1465 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1466 | |
1467 | ctx->data.bool_val = port->user.linkup_enabled; | |
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | static int team_user_linkup_en_option_set(struct team *team, | |
1472 | struct team_gsetter_ctx *ctx) | |
1473 | { | |
85d59a87 | 1474 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1475 | |
1476 | port->user.linkup_enabled = ctx->data.bool_val; | |
85d59a87 | 1477 | team_refresh_port_linkup(port); |
f5e0d343 | 1478 | __team_carrier_check(port->team); |
71472ec1 JP |
1479 | return 0; |
1480 | } | |
1481 | ||
a86fc6b7 JP |
1482 | static int team_priority_option_get(struct team *team, |
1483 | struct team_gsetter_ctx *ctx) | |
1484 | { | |
1485 | struct team_port *port = ctx->info->port; | |
1486 | ||
1487 | ctx->data.s32_val = port->priority; | |
1488 | return 0; | |
1489 | } | |
1490 | ||
1491 | static int team_priority_option_set(struct team *team, | |
1492 | struct team_gsetter_ctx *ctx) | |
1493 | { | |
1494 | struct team_port *port = ctx->info->port; | |
6c31ff36 | 1495 | s32 priority = ctx->data.s32_val; |
a86fc6b7 | 1496 | |
6c31ff36 JP |
1497 | if (port->priority == priority) |
1498 | return 0; | |
1499 | port->priority = priority; | |
1500 | team_queue_override_port_prio_changed(team, port); | |
8ff5105a JP |
1501 | return 0; |
1502 | } | |
1503 | ||
1504 | static int team_queue_id_option_get(struct team *team, | |
1505 | struct team_gsetter_ctx *ctx) | |
1506 | { | |
1507 | struct team_port *port = ctx->info->port; | |
1508 | ||
1509 | ctx->data.u32_val = port->queue_id; | |
a86fc6b7 JP |
1510 | return 0; |
1511 | } | |
1512 | ||
8ff5105a JP |
1513 | static int team_queue_id_option_set(struct team *team, |
1514 | struct team_gsetter_ctx *ctx) | |
1515 | { | |
1516 | struct team_port *port = ctx->info->port; | |
6c31ff36 | 1517 | u16 new_queue_id = ctx->data.u32_val; |
8ff5105a | 1518 | |
6c31ff36 | 1519 | if (port->queue_id == new_queue_id) |
8ff5105a | 1520 | return 0; |
6c31ff36 | 1521 | if (new_queue_id >= team->dev->real_num_tx_queues) |
8ff5105a | 1522 | return -EINVAL; |
6c31ff36 | 1523 | team_queue_override_port_change_queue_id(team, port, new_queue_id); |
8ff5105a JP |
1524 | return 0; |
1525 | } | |
1526 | ||
358b8382 | 1527 | static const struct team_option team_options[] = { |
3d249d4c JP |
1528 | { |
1529 | .name = "mode", | |
1530 | .type = TEAM_OPTION_TYPE_STRING, | |
1531 | .getter = team_mode_option_get, | |
1532 | .setter = team_mode_option_set, | |
1533 | }, | |
fc423ff0 JP |
1534 | { |
1535 | .name = "notify_peers_count", | |
1536 | .type = TEAM_OPTION_TYPE_U32, | |
1537 | .getter = team_notify_peers_count_get, | |
1538 | .setter = team_notify_peers_count_set, | |
1539 | }, | |
1540 | { | |
1541 | .name = "notify_peers_interval", | |
1542 | .type = TEAM_OPTION_TYPE_U32, | |
1543 | .getter = team_notify_peers_interval_get, | |
1544 | .setter = team_notify_peers_interval_set, | |
1545 | }, | |
492b200e JP |
1546 | { |
1547 | .name = "mcast_rejoin_count", | |
1548 | .type = TEAM_OPTION_TYPE_U32, | |
1549 | .getter = team_mcast_rejoin_count_get, | |
1550 | .setter = team_mcast_rejoin_count_set, | |
1551 | }, | |
1552 | { | |
1553 | .name = "mcast_rejoin_interval", | |
1554 | .type = TEAM_OPTION_TYPE_U32, | |
1555 | .getter = team_mcast_rejoin_interval_get, | |
1556 | .setter = team_mcast_rejoin_interval_set, | |
1557 | }, | |
acd69962 JP |
1558 | { |
1559 | .name = "enabled", | |
1560 | .type = TEAM_OPTION_TYPE_BOOL, | |
1561 | .per_port = true, | |
1562 | .getter = team_port_en_option_get, | |
1563 | .setter = team_port_en_option_set, | |
1564 | }, | |
71472ec1 JP |
1565 | { |
1566 | .name = "user_linkup", | |
1567 | .type = TEAM_OPTION_TYPE_BOOL, | |
1568 | .per_port = true, | |
1569 | .getter = team_user_linkup_option_get, | |
1570 | .setter = team_user_linkup_option_set, | |
1571 | }, | |
1572 | { | |
1573 | .name = "user_linkup_enabled", | |
1574 | .type = TEAM_OPTION_TYPE_BOOL, | |
1575 | .per_port = true, | |
1576 | .getter = team_user_linkup_en_option_get, | |
1577 | .setter = team_user_linkup_en_option_set, | |
1578 | }, | |
a86fc6b7 JP |
1579 | { |
1580 | .name = "priority", | |
1581 | .type = TEAM_OPTION_TYPE_S32, | |
1582 | .per_port = true, | |
1583 | .getter = team_priority_option_get, | |
1584 | .setter = team_priority_option_set, | |
1585 | }, | |
8ff5105a JP |
1586 | { |
1587 | .name = "queue_id", | |
1588 | .type = TEAM_OPTION_TYPE_U32, | |
1589 | .per_port = true, | |
1590 | .getter = team_queue_id_option_get, | |
1591 | .setter = team_queue_id_option_set, | |
1592 | }, | |
3d249d4c JP |
1593 | }; |
1594 | ||
6c85f2bd | 1595 | |
3d249d4c JP |
1596 | static int team_init(struct net_device *dev) |
1597 | { | |
1598 | struct team *team = netdev_priv(dev); | |
1599 | int i; | |
358b8382 | 1600 | int err; |
3d249d4c JP |
1601 | |
1602 | team->dev = dev; | |
61dc3461 | 1603 | mutex_init(&team->lock); |
d299cd51 | 1604 | team_set_no_mode(team); |
3d249d4c | 1605 | |
1c213bd2 | 1606 | team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats); |
3d249d4c JP |
1607 | if (!team->pcpu_stats) |
1608 | return -ENOMEM; | |
1609 | ||
1610 | for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) | |
19a0b58e | 1611 | INIT_HLIST_HEAD(&team->en_port_hlist[i]); |
3d249d4c | 1612 | INIT_LIST_HEAD(&team->port_list); |
8ff5105a JP |
1613 | err = team_queue_override_init(team); |
1614 | if (err) | |
1615 | goto err_team_queue_override_init; | |
3d249d4c JP |
1616 | |
1617 | team_adjust_ops(team); | |
1618 | ||
1619 | INIT_LIST_HEAD(&team->option_list); | |
80f7c668 | 1620 | INIT_LIST_HEAD(&team->option_inst_list); |
fc423ff0 JP |
1621 | |
1622 | team_notify_peers_init(team); | |
492b200e | 1623 | team_mcast_rejoin_init(team); |
fc423ff0 | 1624 | |
358b8382 JP |
1625 | err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); |
1626 | if (err) | |
1627 | goto err_options_register; | |
3d249d4c JP |
1628 | netif_carrier_off(dev); |
1629 | ||
d3fff6c4 | 1630 | netdev_lockdep_set_classes(dev); |
6c85f2bd | 1631 | |
3d249d4c | 1632 | return 0; |
358b8382 JP |
1633 | |
1634 | err_options_register: | |
492b200e | 1635 | team_mcast_rejoin_fini(team); |
fc423ff0 | 1636 | team_notify_peers_fini(team); |
8ff5105a JP |
1637 | team_queue_override_fini(team); |
1638 | err_team_queue_override_init: | |
358b8382 JP |
1639 | free_percpu(team->pcpu_stats); |
1640 | ||
1641 | return err; | |
3d249d4c JP |
1642 | } |
1643 | ||
1644 | static void team_uninit(struct net_device *dev) | |
1645 | { | |
1646 | struct team *team = netdev_priv(dev); | |
1647 | struct team_port *port; | |
1648 | struct team_port *tmp; | |
1649 | ||
61dc3461 | 1650 | mutex_lock(&team->lock); |
3d249d4c JP |
1651 | list_for_each_entry_safe(port, tmp, &team->port_list, list) |
1652 | team_port_del(team, port->dev); | |
1653 | ||
1654 | __team_change_mode(team, NULL); /* cleanup */ | |
1655 | __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); | |
492b200e | 1656 | team_mcast_rejoin_fini(team); |
fc423ff0 | 1657 | team_notify_peers_fini(team); |
8ff5105a | 1658 | team_queue_override_fini(team); |
61dc3461 | 1659 | mutex_unlock(&team->lock); |
16cf72bb | 1660 | netdev_change_features(dev); |
3d249d4c JP |
1661 | } |
1662 | ||
1663 | static void team_destructor(struct net_device *dev) | |
1664 | { | |
1665 | struct team *team = netdev_priv(dev); | |
1666 | ||
1667 | free_percpu(team->pcpu_stats); | |
3d249d4c JP |
1668 | } |
1669 | ||
1670 | static int team_open(struct net_device *dev) | |
1671 | { | |
3d249d4c JP |
1672 | return 0; |
1673 | } | |
1674 | ||
1675 | static int team_close(struct net_device *dev) | |
1676 | { | |
3d249d4c JP |
1677 | return 0; |
1678 | } | |
1679 | ||
1680 | /* | |
1681 | * note: already called with rcu_read_lock | |
1682 | */ | |
1683 | static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) | |
1684 | { | |
1685 | struct team *team = netdev_priv(dev); | |
8ff5105a | 1686 | bool tx_success; |
3d249d4c JP |
1687 | unsigned int len = skb->len; |
1688 | ||
8ff5105a JP |
1689 | tx_success = team_queue_override_transmit(team, skb); |
1690 | if (!tx_success) | |
1691 | tx_success = team->ops.transmit(team, skb); | |
3d249d4c JP |
1692 | if (tx_success) { |
1693 | struct team_pcpu_stats *pcpu_stats; | |
1694 | ||
1695 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
1696 | u64_stats_update_begin(&pcpu_stats->syncp); | |
1697 | pcpu_stats->tx_packets++; | |
1698 | pcpu_stats->tx_bytes += len; | |
1699 | u64_stats_update_end(&pcpu_stats->syncp); | |
1700 | } else { | |
1701 | this_cpu_inc(team->pcpu_stats->tx_dropped); | |
1702 | } | |
1703 | ||
1704 | return NETDEV_TX_OK; | |
1705 | } | |
1706 | ||
f663dd9a | 1707 | static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb, |
99932d4f | 1708 | void *accel_priv, select_queue_fallback_t fallback) |
6c85f2bd JP |
1709 | { |
1710 | /* | |
1711 | * This helper function exists to help dev_pick_tx get the correct | |
1712 | * destination queue. Using a helper function skips a call to | |
1713 | * skb_tx_hash and will put the skbs in the queue we expect on their | |
1714 | * way down to the team driver. | |
1715 | */ | |
1716 | u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; | |
1717 | ||
1718 | /* | |
1719 | * Save the original txq to restore before passing to the driver | |
1720 | */ | |
1721 | qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; | |
1722 | ||
1723 | if (unlikely(txq >= dev->real_num_tx_queues)) { | |
1724 | do { | |
1725 | txq -= dev->real_num_tx_queues; | |
1726 | } while (txq >= dev->real_num_tx_queues); | |
1727 | } | |
1728 | return txq; | |
1729 | } | |
1730 | ||
3d249d4c JP |
1731 | static void team_change_rx_flags(struct net_device *dev, int change) |
1732 | { | |
1733 | struct team *team = netdev_priv(dev); | |
1734 | struct team_port *port; | |
1735 | int inc; | |
1736 | ||
1737 | rcu_read_lock(); | |
1738 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1739 | if (change & IFF_PROMISC) { | |
1740 | inc = dev->flags & IFF_PROMISC ? 1 : -1; | |
1741 | dev_set_promiscuity(port->dev, inc); | |
1742 | } | |
1743 | if (change & IFF_ALLMULTI) { | |
1744 | inc = dev->flags & IFF_ALLMULTI ? 1 : -1; | |
1745 | dev_set_allmulti(port->dev, inc); | |
1746 | } | |
1747 | } | |
1748 | rcu_read_unlock(); | |
1749 | } | |
1750 | ||
1751 | static void team_set_rx_mode(struct net_device *dev) | |
1752 | { | |
1753 | struct team *team = netdev_priv(dev); | |
1754 | struct team_port *port; | |
1755 | ||
1756 | rcu_read_lock(); | |
1757 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
72b27032 VY |
1758 | dev_uc_sync_multiple(port->dev, dev); |
1759 | dev_mc_sync_multiple(port->dev, dev); | |
3d249d4c JP |
1760 | } |
1761 | rcu_read_unlock(); | |
1762 | } | |
1763 | ||
1764 | static int team_set_mac_address(struct net_device *dev, void *p) | |
1765 | { | |
1d76efe1 | 1766 | struct sockaddr *addr = p; |
3d249d4c JP |
1767 | struct team *team = netdev_priv(dev); |
1768 | struct team_port *port; | |
3d249d4c | 1769 | |
1d76efe1 JP |
1770 | if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data)) |
1771 | return -EADDRNOTAVAIL; | |
1772 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
9215f437 JP |
1773 | mutex_lock(&team->lock); |
1774 | list_for_each_entry(port, &team->port_list, list) | |
1d76efe1 JP |
1775 | if (team->ops.port_change_dev_addr) |
1776 | team->ops.port_change_dev_addr(team, port); | |
9215f437 | 1777 | mutex_unlock(&team->lock); |
3d249d4c JP |
1778 | return 0; |
1779 | } | |
1780 | ||
1781 | static int team_change_mtu(struct net_device *dev, int new_mtu) | |
1782 | { | |
1783 | struct team *team = netdev_priv(dev); | |
1784 | struct team_port *port; | |
1785 | int err; | |
1786 | ||
1787 | /* | |
1788 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1789 | * to traverse list in reverse under rcu_read_lock | |
1790 | */ | |
61dc3461 | 1791 | mutex_lock(&team->lock); |
9d0d68fa | 1792 | team->port_mtu_change_allowed = true; |
3d249d4c JP |
1793 | list_for_each_entry(port, &team->port_list, list) { |
1794 | err = dev_set_mtu(port->dev, new_mtu); | |
1795 | if (err) { | |
1796 | netdev_err(dev, "Device %s failed to change mtu", | |
1797 | port->dev->name); | |
1798 | goto unwind; | |
1799 | } | |
1800 | } | |
9d0d68fa | 1801 | team->port_mtu_change_allowed = false; |
61dc3461 | 1802 | mutex_unlock(&team->lock); |
3d249d4c JP |
1803 | |
1804 | dev->mtu = new_mtu; | |
1805 | ||
1806 | return 0; | |
1807 | ||
1808 | unwind: | |
1809 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1810 | dev_set_mtu(port->dev, dev->mtu); | |
9d0d68fa | 1811 | team->port_mtu_change_allowed = false; |
61dc3461 | 1812 | mutex_unlock(&team->lock); |
3d249d4c JP |
1813 | |
1814 | return err; | |
1815 | } | |
1816 | ||
bc1f4470 | 1817 | static void |
3d249d4c JP |
1818 | team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
1819 | { | |
1820 | struct team *team = netdev_priv(dev); | |
1821 | struct team_pcpu_stats *p; | |
1822 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; | |
bb63daf9 | 1823 | u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0; |
3d249d4c JP |
1824 | unsigned int start; |
1825 | int i; | |
1826 | ||
1827 | for_each_possible_cpu(i) { | |
1828 | p = per_cpu_ptr(team->pcpu_stats, i); | |
1829 | do { | |
57a7744e | 1830 | start = u64_stats_fetch_begin_irq(&p->syncp); |
3d249d4c JP |
1831 | rx_packets = p->rx_packets; |
1832 | rx_bytes = p->rx_bytes; | |
1833 | rx_multicast = p->rx_multicast; | |
1834 | tx_packets = p->tx_packets; | |
1835 | tx_bytes = p->tx_bytes; | |
57a7744e | 1836 | } while (u64_stats_fetch_retry_irq(&p->syncp, start)); |
3d249d4c JP |
1837 | |
1838 | stats->rx_packets += rx_packets; | |
1839 | stats->rx_bytes += rx_bytes; | |
1840 | stats->multicast += rx_multicast; | |
1841 | stats->tx_packets += tx_packets; | |
1842 | stats->tx_bytes += tx_bytes; | |
1843 | /* | |
bb63daf9 JW |
1844 | * rx_dropped, tx_dropped & rx_nohandler are u32, |
1845 | * updated without syncp protection. | |
3d249d4c JP |
1846 | */ |
1847 | rx_dropped += p->rx_dropped; | |
1848 | tx_dropped += p->tx_dropped; | |
bb63daf9 | 1849 | rx_nohandler += p->rx_nohandler; |
3d249d4c JP |
1850 | } |
1851 | stats->rx_dropped = rx_dropped; | |
1852 | stats->tx_dropped = tx_dropped; | |
bb63daf9 | 1853 | stats->rx_nohandler = rx_nohandler; |
3d249d4c JP |
1854 | } |
1855 | ||
80d5c368 | 1856 | static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) |
3d249d4c JP |
1857 | { |
1858 | struct team *team = netdev_priv(dev); | |
1859 | struct team_port *port; | |
87002b03 | 1860 | int err; |
3d249d4c | 1861 | |
87002b03 JP |
1862 | /* |
1863 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1864 | * to traverse list in reverse under rcu_read_lock | |
1865 | */ | |
1866 | mutex_lock(&team->lock); | |
1867 | list_for_each_entry(port, &team->port_list, list) { | |
80d5c368 | 1868 | err = vlan_vid_add(port->dev, proto, vid); |
87002b03 JP |
1869 | if (err) |
1870 | goto unwind; | |
3d249d4c | 1871 | } |
87002b03 | 1872 | mutex_unlock(&team->lock); |
8e586137 JP |
1873 | |
1874 | return 0; | |
87002b03 JP |
1875 | |
1876 | unwind: | |
1877 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
80d5c368 | 1878 | vlan_vid_del(port->dev, proto, vid); |
87002b03 JP |
1879 | mutex_unlock(&team->lock); |
1880 | ||
1881 | return err; | |
3d249d4c JP |
1882 | } |
1883 | ||
80d5c368 | 1884 | static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) |
3d249d4c JP |
1885 | { |
1886 | struct team *team = netdev_priv(dev); | |
1887 | struct team_port *port; | |
1888 | ||
60a6531b IS |
1889 | mutex_lock(&team->lock); |
1890 | list_for_each_entry(port, &team->port_list, list) | |
80d5c368 | 1891 | vlan_vid_del(port->dev, proto, vid); |
60a6531b | 1892 | mutex_unlock(&team->lock); |
8e586137 JP |
1893 | |
1894 | return 0; | |
3d249d4c JP |
1895 | } |
1896 | ||
bd2d0837 JP |
1897 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1898 | static void team_poll_controller(struct net_device *dev) | |
1899 | { | |
1900 | } | |
1901 | ||
1902 | static void __team_netpoll_cleanup(struct team *team) | |
1903 | { | |
1904 | struct team_port *port; | |
1905 | ||
1906 | list_for_each_entry(port, &team->port_list, list) | |
1907 | team_port_disable_netpoll(port); | |
1908 | } | |
1909 | ||
1910 | static void team_netpoll_cleanup(struct net_device *dev) | |
1911 | { | |
1912 | struct team *team = netdev_priv(dev); | |
1913 | ||
1914 | mutex_lock(&team->lock); | |
1915 | __team_netpoll_cleanup(team); | |
1916 | mutex_unlock(&team->lock); | |
1917 | } | |
1918 | ||
1919 | static int team_netpoll_setup(struct net_device *dev, | |
a8779ec1 | 1920 | struct netpoll_info *npifo) |
bd2d0837 JP |
1921 | { |
1922 | struct team *team = netdev_priv(dev); | |
1923 | struct team_port *port; | |
3324d024 | 1924 | int err = 0; |
bd2d0837 JP |
1925 | |
1926 | mutex_lock(&team->lock); | |
1927 | list_for_each_entry(port, &team->port_list, list) { | |
9cf2f437 | 1928 | err = __team_port_enable_netpoll(port); |
bd2d0837 JP |
1929 | if (err) { |
1930 | __team_netpoll_cleanup(team); | |
1931 | break; | |
1932 | } | |
1933 | } | |
1934 | mutex_unlock(&team->lock); | |
1935 | return err; | |
1936 | } | |
1937 | #endif | |
1938 | ||
33eaf2a6 DA |
1939 | static int team_add_slave(struct net_device *dev, struct net_device *port_dev, |
1940 | struct netlink_ext_ack *extack) | |
3d249d4c JP |
1941 | { |
1942 | struct team *team = netdev_priv(dev); | |
1943 | int err; | |
1944 | ||
61dc3461 | 1945 | mutex_lock(&team->lock); |
44d15d93 | 1946 | err = team_port_add(team, port_dev, extack); |
61dc3461 | 1947 | mutex_unlock(&team->lock); |
16cf72bb XL |
1948 | |
1949 | if (!err) | |
1950 | netdev_change_features(dev); | |
1951 | ||
3d249d4c JP |
1952 | return err; |
1953 | } | |
1954 | ||
1955 | static int team_del_slave(struct net_device *dev, struct net_device *port_dev) | |
1956 | { | |
1957 | struct team *team = netdev_priv(dev); | |
1958 | int err; | |
1959 | ||
61dc3461 | 1960 | mutex_lock(&team->lock); |
3d249d4c | 1961 | err = team_port_del(team, port_dev); |
61dc3461 | 1962 | mutex_unlock(&team->lock); |
16cf72bb XL |
1963 | |
1964 | if (!err) | |
1965 | netdev_change_features(dev); | |
1966 | ||
3d249d4c JP |
1967 | return err; |
1968 | } | |
1969 | ||
234a8fd4 JP |
1970 | static netdev_features_t team_fix_features(struct net_device *dev, |
1971 | netdev_features_t features) | |
1972 | { | |
1973 | struct team_port *port; | |
1974 | struct team *team = netdev_priv(dev); | |
1975 | netdev_features_t mask; | |
1976 | ||
7889cbee | 1977 | mask = features; |
234a8fd4 JP |
1978 | features &= ~NETIF_F_ONE_FOR_ALL; |
1979 | features |= NETIF_F_ALL_FOR_ALL; | |
1980 | ||
1981 | rcu_read_lock(); | |
1982 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1983 | features = netdev_increment_features(features, | |
1984 | port->dev->features, | |
1985 | mask); | |
1986 | } | |
1987 | rcu_read_unlock(); | |
247f6d0f JP |
1988 | |
1989 | features = netdev_add_tso_features(features, mask); | |
1990 | ||
234a8fd4 JP |
1991 | return features; |
1992 | } | |
1993 | ||
4cafe373 FL |
1994 | static int team_change_carrier(struct net_device *dev, bool new_carrier) |
1995 | { | |
e185483e FL |
1996 | struct team *team = netdev_priv(dev); |
1997 | ||
1998 | team->user_carrier_enabled = true; | |
1999 | ||
4cafe373 FL |
2000 | if (new_carrier) |
2001 | netif_carrier_on(dev); | |
2002 | else | |
2003 | netif_carrier_off(dev); | |
2004 | return 0; | |
2005 | } | |
2006 | ||
3d249d4c JP |
2007 | static const struct net_device_ops team_netdev_ops = { |
2008 | .ndo_init = team_init, | |
2009 | .ndo_uninit = team_uninit, | |
2010 | .ndo_open = team_open, | |
2011 | .ndo_stop = team_close, | |
2012 | .ndo_start_xmit = team_xmit, | |
6c85f2bd | 2013 | .ndo_select_queue = team_select_queue, |
3d249d4c JP |
2014 | .ndo_change_rx_flags = team_change_rx_flags, |
2015 | .ndo_set_rx_mode = team_set_rx_mode, | |
2016 | .ndo_set_mac_address = team_set_mac_address, | |
2017 | .ndo_change_mtu = team_change_mtu, | |
2018 | .ndo_get_stats64 = team_get_stats64, | |
2019 | .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, | |
2020 | .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, | |
bd2d0837 JP |
2021 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2022 | .ndo_poll_controller = team_poll_controller, | |
2023 | .ndo_netpoll_setup = team_netpoll_setup, | |
2024 | .ndo_netpoll_cleanup = team_netpoll_cleanup, | |
2025 | #endif | |
3d249d4c JP |
2026 | .ndo_add_slave = team_add_slave, |
2027 | .ndo_del_slave = team_del_slave, | |
234a8fd4 | 2028 | .ndo_fix_features = team_fix_features, |
4cafe373 | 2029 | .ndo_change_carrier = team_change_carrier, |
b9f4cf75 | 2030 | .ndo_features_check = passthru_features_check, |
3d249d4c JP |
2031 | }; |
2032 | ||
7f51c587 FL |
2033 | /*********************** |
2034 | * ethtool interface | |
2035 | ***********************/ | |
2036 | ||
2037 | static void team_ethtool_get_drvinfo(struct net_device *dev, | |
2038 | struct ethtool_drvinfo *drvinfo) | |
2039 | { | |
3066af58 FL |
2040 | strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); |
2041 | strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); | |
7f51c587 FL |
2042 | } |
2043 | ||
2044 | static const struct ethtool_ops team_ethtool_ops = { | |
2045 | .get_drvinfo = team_ethtool_get_drvinfo, | |
2046 | .get_link = ethtool_op_get_link, | |
2047 | }; | |
3d249d4c JP |
2048 | |
2049 | /*********************** | |
2050 | * rt netlink interface | |
2051 | ***********************/ | |
2052 | ||
1d76efe1 JP |
2053 | static void team_setup_by_port(struct net_device *dev, |
2054 | struct net_device *port_dev) | |
2055 | { | |
2056 | dev->header_ops = port_dev->header_ops; | |
2057 | dev->type = port_dev->type; | |
2058 | dev->hard_header_len = port_dev->hard_header_len; | |
2059 | dev->addr_len = port_dev->addr_len; | |
2060 | dev->mtu = port_dev->mtu; | |
2061 | memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len); | |
93af7357 | 2062 | eth_hw_addr_inherit(dev, port_dev); |
1d76efe1 JP |
2063 | } |
2064 | ||
2065 | static int team_dev_type_check_change(struct net_device *dev, | |
2066 | struct net_device *port_dev) | |
2067 | { | |
2068 | struct team *team = netdev_priv(dev); | |
2069 | char *portname = port_dev->name; | |
2070 | int err; | |
2071 | ||
2072 | if (dev->type == port_dev->type) | |
2073 | return 0; | |
2074 | if (!list_empty(&team->port_list)) { | |
2075 | netdev_err(dev, "Device %s is of different type\n", portname); | |
2076 | return -EBUSY; | |
2077 | } | |
2078 | err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev); | |
2079 | err = notifier_to_errno(err); | |
2080 | if (err) { | |
2081 | netdev_err(dev, "Refused to change device type\n"); | |
2082 | return err; | |
2083 | } | |
2084 | dev_uc_flush(dev); | |
2085 | dev_mc_flush(dev); | |
2086 | team_setup_by_port(dev, port_dev); | |
2087 | call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev); | |
2088 | return 0; | |
2089 | } | |
2090 | ||
3d249d4c JP |
2091 | static void team_setup(struct net_device *dev) |
2092 | { | |
2093 | ether_setup(dev); | |
3331aa37 | 2094 | dev->max_mtu = ETH_MAX_MTU; |
3d249d4c JP |
2095 | |
2096 | dev->netdev_ops = &team_netdev_ops; | |
7f51c587 | 2097 | dev->ethtool_ops = &team_ethtool_ops; |
cf124db5 DM |
2098 | dev->needs_free_netdev = true; |
2099 | dev->priv_destructor = team_destructor; | |
3d249d4c | 2100 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); |
22e380a6 | 2101 | dev->priv_flags |= IFF_NO_QUEUE; |
c981e421 | 2102 | dev->priv_flags |= IFF_TEAM; |
3d249d4c JP |
2103 | |
2104 | /* | |
2105 | * Indicate we support unicast address filtering. That way core won't | |
2106 | * bring us to promisc mode in case a unicast addr is added. | |
2107 | * Let this up to underlay drivers. | |
2108 | */ | |
5a1d1c8c | 2109 | dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE; |
3d249d4c JP |
2110 | |
2111 | dev->features |= NETIF_F_LLTX; | |
2112 | dev->features |= NETIF_F_GRO; | |
99301ba1 WC |
2113 | |
2114 | /* Don't allow team devices to change network namespaces. */ | |
2115 | dev->features |= NETIF_F_NETNS_LOCAL; | |
2116 | ||
3ed71471 | 2117 | dev->hw_features = TEAM_VLAN_FEATURES | |
f646968f PM |
2118 | NETIF_F_HW_VLAN_CTAG_TX | |
2119 | NETIF_F_HW_VLAN_CTAG_RX | | |
2120 | NETIF_F_HW_VLAN_CTAG_FILTER; | |
3d249d4c | 2121 | |
8eea1ca8 | 2122 | dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4; |
3d249d4c JP |
2123 | dev->features |= dev->hw_features; |
2124 | } | |
2125 | ||
2126 | static int team_newlink(struct net *src_net, struct net_device *dev, | |
7a3f4a18 MS |
2127 | struct nlattr *tb[], struct nlattr *data[], |
2128 | struct netlink_ext_ack *extack) | |
3d249d4c | 2129 | { |
3d249d4c | 2130 | if (tb[IFLA_ADDRESS] == NULL) |
7ce5d222 | 2131 | eth_hw_addr_random(dev); |
3d249d4c | 2132 | |
ff204cce | 2133 | return register_netdevice(dev); |
3d249d4c JP |
2134 | } |
2135 | ||
a8b8a889 MS |
2136 | static int team_validate(struct nlattr *tb[], struct nlattr *data[], |
2137 | struct netlink_ext_ack *extack) | |
3d249d4c JP |
2138 | { |
2139 | if (tb[IFLA_ADDRESS]) { | |
2140 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
2141 | return -EINVAL; | |
2142 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
2143 | return -EADDRNOTAVAIL; | |
2144 | } | |
2145 | return 0; | |
2146 | } | |
2147 | ||
6c85f2bd JP |
2148 | static unsigned int team_get_num_tx_queues(void) |
2149 | { | |
2150 | return TEAM_DEFAULT_NUM_TX_QUEUES; | |
2151 | } | |
2152 | ||
2153 | static unsigned int team_get_num_rx_queues(void) | |
2154 | { | |
2155 | return TEAM_DEFAULT_NUM_RX_QUEUES; | |
2156 | } | |
2157 | ||
3d249d4c | 2158 | static struct rtnl_link_ops team_link_ops __read_mostly = { |
6c85f2bd JP |
2159 | .kind = DRV_NAME, |
2160 | .priv_size = sizeof(struct team), | |
2161 | .setup = team_setup, | |
2162 | .newlink = team_newlink, | |
2163 | .validate = team_validate, | |
2164 | .get_num_tx_queues = team_get_num_tx_queues, | |
2165 | .get_num_rx_queues = team_get_num_rx_queues, | |
3d249d4c JP |
2166 | }; |
2167 | ||
2168 | ||
2169 | /*********************************** | |
2170 | * Generic netlink custom interface | |
2171 | ***********************************/ | |
2172 | ||
489111e5 | 2173 | static struct genl_family team_nl_family; |
3d249d4c JP |
2174 | |
2175 | static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { | |
2176 | [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, | |
2177 | [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, | |
2178 | [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, | |
2179 | [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, | |
2180 | }; | |
2181 | ||
2182 | static const struct nla_policy | |
2183 | team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { | |
2184 | [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, | |
2185 | [TEAM_ATTR_OPTION_NAME] = { | |
2186 | .type = NLA_STRING, | |
2187 | .len = TEAM_STRING_MAX_LEN, | |
2188 | }, | |
2189 | [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, | |
2190 | [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, | |
2615598f | 2191 | [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, |
3d249d4c JP |
2192 | }; |
2193 | ||
2194 | static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) | |
2195 | { | |
2196 | struct sk_buff *msg; | |
2197 | void *hdr; | |
2198 | int err; | |
2199 | ||
58050fce | 2200 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
3d249d4c JP |
2201 | if (!msg) |
2202 | return -ENOMEM; | |
2203 | ||
15e47304 | 2204 | hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, |
3d249d4c | 2205 | &team_nl_family, 0, TEAM_CMD_NOOP); |
a326e6dd WY |
2206 | if (!hdr) { |
2207 | err = -EMSGSIZE; | |
3d249d4c JP |
2208 | goto err_msg_put; |
2209 | } | |
2210 | ||
2211 | genlmsg_end(msg, hdr); | |
2212 | ||
15e47304 | 2213 | return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid); |
3d249d4c JP |
2214 | |
2215 | err_msg_put: | |
2216 | nlmsg_free(msg); | |
2217 | ||
2218 | return err; | |
2219 | } | |
2220 | ||
2221 | /* | |
2222 | * Netlink cmd functions should be locked by following two functions. | |
8c0713a5 | 2223 | * Since dev gets held here, that ensures dev won't disappear in between. |
3d249d4c JP |
2224 | */ |
2225 | static struct team *team_nl_team_get(struct genl_info *info) | |
2226 | { | |
2227 | struct net *net = genl_info_net(info); | |
2228 | int ifindex; | |
2229 | struct net_device *dev; | |
2230 | struct team *team; | |
2231 | ||
2232 | if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) | |
2233 | return NULL; | |
2234 | ||
2235 | ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); | |
8c0713a5 | 2236 | dev = dev_get_by_index(net, ifindex); |
3d249d4c | 2237 | if (!dev || dev->netdev_ops != &team_netdev_ops) { |
8c0713a5 JP |
2238 | if (dev) |
2239 | dev_put(dev); | |
3d249d4c JP |
2240 | return NULL; |
2241 | } | |
2242 | ||
2243 | team = netdev_priv(dev); | |
61dc3461 | 2244 | mutex_lock(&team->lock); |
3d249d4c JP |
2245 | return team; |
2246 | } | |
2247 | ||
2248 | static void team_nl_team_put(struct team *team) | |
2249 | { | |
61dc3461 | 2250 | mutex_unlock(&team->lock); |
8c0713a5 | 2251 | dev_put(team->dev); |
3d249d4c JP |
2252 | } |
2253 | ||
9b00cf2d | 2254 | typedef int team_nl_send_func_t(struct sk_buff *skb, |
15e47304 | 2255 | struct team *team, u32 portid); |
9b00cf2d | 2256 | |
15e47304 | 2257 | static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid) |
9b00cf2d | 2258 | { |
15e47304 | 2259 | return genlmsg_unicast(dev_net(team->dev), skb, portid); |
9b00cf2d JP |
2260 | } |
2261 | ||
01048d9a JP |
2262 | static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team, |
2263 | struct team_option_inst *opt_inst) | |
2264 | { | |
2265 | struct nlattr *option_item; | |
2266 | struct team_option *option = opt_inst->option; | |
9b00cf2d | 2267 | struct team_option_inst_info *opt_inst_info = &opt_inst->info; |
01048d9a JP |
2268 | struct team_gsetter_ctx ctx; |
2269 | int err; | |
2270 | ||
9b00cf2d JP |
2271 | ctx.info = opt_inst_info; |
2272 | err = team_option_get(team, opt_inst, &ctx); | |
2273 | if (err) | |
2274 | return err; | |
2275 | ||
01048d9a JP |
2276 | option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION); |
2277 | if (!option_item) | |
9b00cf2d | 2278 | return -EMSGSIZE; |
01048d9a | 2279 | |
9b00cf2d JP |
2280 | if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) |
2281 | goto nest_cancel; | |
01048d9a JP |
2282 | if (opt_inst_info->port && |
2283 | nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, | |
2284 | opt_inst_info->port->dev->ifindex)) | |
9b00cf2d | 2285 | goto nest_cancel; |
01048d9a JP |
2286 | if (opt_inst->option->array_size && |
2287 | nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX, | |
2288 | opt_inst_info->array_index)) | |
9b00cf2d | 2289 | goto nest_cancel; |
01048d9a JP |
2290 | |
2291 | switch (option->type) { | |
2292 | case TEAM_OPTION_TYPE_U32: | |
2293 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) | |
9b00cf2d | 2294 | goto nest_cancel; |
01048d9a | 2295 | if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val)) |
9b00cf2d | 2296 | goto nest_cancel; |
01048d9a JP |
2297 | break; |
2298 | case TEAM_OPTION_TYPE_STRING: | |
2299 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) | |
9b00cf2d | 2300 | goto nest_cancel; |
01048d9a JP |
2301 | if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, |
2302 | ctx.data.str_val)) | |
9b00cf2d | 2303 | goto nest_cancel; |
01048d9a JP |
2304 | break; |
2305 | case TEAM_OPTION_TYPE_BINARY: | |
2306 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) | |
9b00cf2d | 2307 | goto nest_cancel; |
01048d9a JP |
2308 | if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len, |
2309 | ctx.data.bin_val.ptr)) | |
9b00cf2d | 2310 | goto nest_cancel; |
01048d9a JP |
2311 | break; |
2312 | case TEAM_OPTION_TYPE_BOOL: | |
2313 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) | |
9b00cf2d | 2314 | goto nest_cancel; |
01048d9a JP |
2315 | if (ctx.data.bool_val && |
2316 | nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) | |
9b00cf2d | 2317 | goto nest_cancel; |
01048d9a | 2318 | break; |
69821638 JP |
2319 | case TEAM_OPTION_TYPE_S32: |
2320 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32)) | |
2321 | goto nest_cancel; | |
2322 | if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val)) | |
2323 | goto nest_cancel; | |
2324 | break; | |
01048d9a JP |
2325 | default: |
2326 | BUG(); | |
2327 | } | |
9b00cf2d JP |
2328 | if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) |
2329 | goto nest_cancel; | |
2330 | if (opt_inst->changed) { | |
2331 | if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) | |
2332 | goto nest_cancel; | |
2333 | opt_inst->changed = false; | |
2334 | } | |
01048d9a JP |
2335 | nla_nest_end(skb, option_item); |
2336 | return 0; | |
2337 | ||
9b00cf2d JP |
2338 | nest_cancel: |
2339 | nla_nest_cancel(skb, option_item); | |
2340 | return -EMSGSIZE; | |
2341 | } | |
2342 | ||
2343 | static int __send_and_alloc_skb(struct sk_buff **pskb, | |
15e47304 | 2344 | struct team *team, u32 portid, |
9b00cf2d JP |
2345 | team_nl_send_func_t *send_func) |
2346 | { | |
2347 | int err; | |
2348 | ||
2349 | if (*pskb) { | |
15e47304 | 2350 | err = send_func(*pskb, team, portid); |
9b00cf2d JP |
2351 | if (err) |
2352 | return err; | |
2353 | } | |
58050fce | 2354 | *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); |
9b00cf2d JP |
2355 | if (!*pskb) |
2356 | return -ENOMEM; | |
2357 | return 0; | |
01048d9a JP |
2358 | } |
2359 | ||
15e47304 | 2360 | static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, |
9b00cf2d | 2361 | int flags, team_nl_send_func_t *send_func, |
01048d9a | 2362 | struct list_head *sel_opt_inst_list) |
3d249d4c JP |
2363 | { |
2364 | struct nlattr *option_list; | |
9b00cf2d | 2365 | struct nlmsghdr *nlh; |
3d249d4c | 2366 | void *hdr; |
80f7c668 JP |
2367 | struct team_option_inst *opt_inst; |
2368 | int err; | |
9b00cf2d JP |
2369 | struct sk_buff *skb = NULL; |
2370 | bool incomplete; | |
2371 | int i; | |
3d249d4c | 2372 | |
9b00cf2d JP |
2373 | opt_inst = list_first_entry(sel_opt_inst_list, |
2374 | struct team_option_inst, tmp_list); | |
2375 | ||
2376 | start_again: | |
15e47304 | 2377 | err = __send_and_alloc_skb(&skb, team, portid, send_func); |
9b00cf2d JP |
2378 | if (err) |
2379 | return err; | |
2380 | ||
15e47304 | 2381 | hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, |
3d249d4c | 2382 | TEAM_CMD_OPTIONS_GET); |
72ec0bc6 PB |
2383 | if (!hdr) { |
2384 | nlmsg_free(skb); | |
a326e6dd | 2385 | return -EMSGSIZE; |
72ec0bc6 | 2386 | } |
3d249d4c | 2387 | |
86ebb02d DM |
2388 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
2389 | goto nla_put_failure; | |
3d249d4c JP |
2390 | option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION); |
2391 | if (!option_list) | |
75db986a | 2392 | goto nla_put_failure; |
3d249d4c | 2393 | |
9b00cf2d JP |
2394 | i = 0; |
2395 | incomplete = false; | |
2396 | list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { | |
01048d9a | 2397 | err = team_nl_fill_one_option_get(skb, team, opt_inst); |
9b00cf2d JP |
2398 | if (err) { |
2399 | if (err == -EMSGSIZE) { | |
2400 | if (!i) | |
2401 | goto errout; | |
2402 | incomplete = true; | |
2403 | break; | |
2404 | } | |
01048d9a | 2405 | goto errout; |
9b00cf2d JP |
2406 | } |
2407 | i++; | |
3d249d4c JP |
2408 | } |
2409 | ||
2410 | nla_nest_end(skb, option_list); | |
9b00cf2d JP |
2411 | genlmsg_end(skb, hdr); |
2412 | if (incomplete) | |
2413 | goto start_again; | |
2414 | ||
2415 | send_done: | |
15e47304 | 2416 | nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); |
9b00cf2d | 2417 | if (!nlh) { |
15e47304 | 2418 | err = __send_and_alloc_skb(&skb, team, portid, send_func); |
9b00cf2d | 2419 | if (err) |
cbcc607e | 2420 | return err; |
9b00cf2d JP |
2421 | goto send_done; |
2422 | } | |
2423 | ||
15e47304 | 2424 | return send_func(skb, team, portid); |
3d249d4c JP |
2425 | |
2426 | nla_put_failure: | |
80f7c668 JP |
2427 | err = -EMSGSIZE; |
2428 | errout: | |
9b00cf2d | 2429 | nlmsg_free(skb); |
80f7c668 | 2430 | return err; |
3d249d4c JP |
2431 | } |
2432 | ||
3d249d4c JP |
2433 | static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) |
2434 | { | |
2435 | struct team *team; | |
9b00cf2d | 2436 | struct team_option_inst *opt_inst; |
3d249d4c | 2437 | int err; |
9b00cf2d | 2438 | LIST_HEAD(sel_opt_inst_list); |
3d249d4c JP |
2439 | |
2440 | team = team_nl_team_get(info); | |
2441 | if (!team) | |
2442 | return -EINVAL; | |
2443 | ||
9b00cf2d JP |
2444 | list_for_each_entry(opt_inst, &team->option_inst_list, list) |
2445 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
15e47304 | 2446 | err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq, |
9b00cf2d JP |
2447 | NLM_F_ACK, team_nl_send_unicast, |
2448 | &sel_opt_inst_list); | |
3d249d4c JP |
2449 | |
2450 | team_nl_team_put(team); | |
2451 | ||
2452 | return err; | |
2453 | } | |
2454 | ||
2fcdb2c9 JP |
2455 | static int team_nl_send_event_options_get(struct team *team, |
2456 | struct list_head *sel_opt_inst_list); | |
2457 | ||
3d249d4c JP |
2458 | static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) |
2459 | { | |
2460 | struct team *team; | |
2461 | int err = 0; | |
2462 | int i; | |
2463 | struct nlattr *nl_option; | |
2fcdb2c9 | 2464 | LIST_HEAD(opt_inst_list); |
3d249d4c | 2465 | |
7d259505 JP |
2466 | rtnl_lock(); |
2467 | ||
3d249d4c | 2468 | team = team_nl_team_get(info); |
7d259505 JP |
2469 | if (!team) { |
2470 | err = -EINVAL; | |
2471 | goto rtnl_unlock; | |
2472 | } | |
3d249d4c JP |
2473 | |
2474 | err = -EINVAL; | |
2475 | if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { | |
2476 | err = -EINVAL; | |
2477 | goto team_put; | |
2478 | } | |
2479 | ||
2480 | nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { | |
80f7c668 | 2481 | struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; |
b1303326 | 2482 | struct nlattr *attr; |
14f066ba | 2483 | struct nlattr *attr_data; |
3d249d4c | 2484 | enum team_option_type opt_type; |
80f7c668 | 2485 | int opt_port_ifindex = 0; /* != 0 for per-port options */ |
b1303326 JP |
2486 | u32 opt_array_index = 0; |
2487 | bool opt_is_array = false; | |
80f7c668 | 2488 | struct team_option_inst *opt_inst; |
3d249d4c JP |
2489 | char *opt_name; |
2490 | bool opt_found = false; | |
2491 | ||
2492 | if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { | |
2493 | err = -EINVAL; | |
2494 | goto team_put; | |
2495 | } | |
80f7c668 | 2496 | err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX, |
fe52145f JB |
2497 | nl_option, team_nl_option_policy, |
2498 | info->extack); | |
3d249d4c JP |
2499 | if (err) |
2500 | goto team_put; | |
80f7c668 | 2501 | if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || |
14f066ba | 2502 | !opt_attrs[TEAM_ATTR_OPTION_TYPE]) { |
3d249d4c JP |
2503 | err = -EINVAL; |
2504 | goto team_put; | |
2505 | } | |
80f7c668 | 2506 | switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { |
3d249d4c JP |
2507 | case NLA_U32: |
2508 | opt_type = TEAM_OPTION_TYPE_U32; | |
2509 | break; | |
2510 | case NLA_STRING: | |
2511 | opt_type = TEAM_OPTION_TYPE_STRING; | |
2512 | break; | |
2615598f JP |
2513 | case NLA_BINARY: |
2514 | opt_type = TEAM_OPTION_TYPE_BINARY; | |
2515 | break; | |
14f066ba JP |
2516 | case NLA_FLAG: |
2517 | opt_type = TEAM_OPTION_TYPE_BOOL; | |
2518 | break; | |
69821638 JP |
2519 | case NLA_S32: |
2520 | opt_type = TEAM_OPTION_TYPE_S32; | |
2521 | break; | |
3d249d4c JP |
2522 | default: |
2523 | goto team_put; | |
2524 | } | |
2525 | ||
14f066ba JP |
2526 | attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; |
2527 | if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { | |
2528 | err = -EINVAL; | |
2529 | goto team_put; | |
2530 | } | |
2531 | ||
80f7c668 | 2532 | opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); |
b1303326 JP |
2533 | attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; |
2534 | if (attr) | |
2535 | opt_port_ifindex = nla_get_u32(attr); | |
2536 | ||
2537 | attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX]; | |
2538 | if (attr) { | |
2539 | opt_is_array = true; | |
2540 | opt_array_index = nla_get_u32(attr); | |
2541 | } | |
80f7c668 JP |
2542 | |
2543 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
2544 | struct team_option *option = opt_inst->option; | |
80f7c668 | 2545 | struct team_gsetter_ctx ctx; |
85d59a87 | 2546 | struct team_option_inst_info *opt_inst_info; |
80f7c668 | 2547 | int tmp_ifindex; |
3d249d4c | 2548 | |
85d59a87 JP |
2549 | opt_inst_info = &opt_inst->info; |
2550 | tmp_ifindex = opt_inst_info->port ? | |
2551 | opt_inst_info->port->dev->ifindex : 0; | |
3d249d4c | 2552 | if (option->type != opt_type || |
80f7c668 | 2553 | strcmp(option->name, opt_name) || |
b1303326 JP |
2554 | tmp_ifindex != opt_port_ifindex || |
2555 | (option->array_size && !opt_is_array) || | |
85d59a87 | 2556 | opt_inst_info->array_index != opt_array_index) |
3d249d4c JP |
2557 | continue; |
2558 | opt_found = true; | |
85d59a87 | 2559 | ctx.info = opt_inst_info; |
3d249d4c JP |
2560 | switch (opt_type) { |
2561 | case TEAM_OPTION_TYPE_U32: | |
14f066ba | 2562 | ctx.data.u32_val = nla_get_u32(attr_data); |
3d249d4c JP |
2563 | break; |
2564 | case TEAM_OPTION_TYPE_STRING: | |
14f066ba | 2565 | if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { |
2615598f JP |
2566 | err = -EINVAL; |
2567 | goto team_put; | |
2568 | } | |
14f066ba | 2569 | ctx.data.str_val = nla_data(attr_data); |
3d249d4c | 2570 | break; |
2615598f | 2571 | case TEAM_OPTION_TYPE_BINARY: |
14f066ba JP |
2572 | ctx.data.bin_val.len = nla_len(attr_data); |
2573 | ctx.data.bin_val.ptr = nla_data(attr_data); | |
2574 | break; | |
2575 | case TEAM_OPTION_TYPE_BOOL: | |
2576 | ctx.data.bool_val = attr_data ? true : false; | |
2615598f | 2577 | break; |
69821638 JP |
2578 | case TEAM_OPTION_TYPE_S32: |
2579 | ctx.data.s32_val = nla_get_s32(attr_data); | |
2580 | break; | |
3d249d4c JP |
2581 | default: |
2582 | BUG(); | |
2583 | } | |
80f7c668 | 2584 | err = team_option_set(team, opt_inst, &ctx); |
3d249d4c JP |
2585 | if (err) |
2586 | goto team_put; | |
2fcdb2c9 | 2587 | opt_inst->changed = true; |
4fb0534f PA |
2588 | |
2589 | /* dumb/evil user-space can send us duplicate opt, | |
2590 | * keep only the last one | |
2591 | */ | |
2592 | if (__team_option_inst_tmp_find(&opt_inst_list, | |
2593 | opt_inst)) | |
2594 | continue; | |
2595 | ||
2fcdb2c9 | 2596 | list_add(&opt_inst->tmp_list, &opt_inst_list); |
3d249d4c JP |
2597 | } |
2598 | if (!opt_found) { | |
2599 | err = -ENOENT; | |
2600 | goto team_put; | |
2601 | } | |
2602 | } | |
2603 | ||
2fcdb2c9 JP |
2604 | err = team_nl_send_event_options_get(team, &opt_inst_list); |
2605 | ||
3d249d4c JP |
2606 | team_put: |
2607 | team_nl_team_put(team); | |
7d259505 JP |
2608 | rtnl_unlock: |
2609 | rtnl_unlock(); | |
3d249d4c JP |
2610 | return err; |
2611 | } | |
2612 | ||
d90f889e JP |
2613 | static int team_nl_fill_one_port_get(struct sk_buff *skb, |
2614 | struct team_port *port) | |
2615 | { | |
2616 | struct nlattr *port_item; | |
2617 | ||
2618 | port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); | |
2619 | if (!port_item) | |
2620 | goto nest_cancel; | |
2621 | if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) | |
2622 | goto nest_cancel; | |
2623 | if (port->changed) { | |
2624 | if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) | |
2625 | goto nest_cancel; | |
2626 | port->changed = false; | |
2627 | } | |
2628 | if ((port->removed && | |
2629 | nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || | |
2630 | (port->state.linkup && | |
2631 | nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || | |
2632 | nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || | |
2633 | nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) | |
2634 | goto nest_cancel; | |
2635 | nla_nest_end(skb, port_item); | |
2636 | return 0; | |
2637 | ||
2638 | nest_cancel: | |
2639 | nla_nest_cancel(skb, port_item); | |
2640 | return -EMSGSIZE; | |
2641 | } | |
2642 | ||
2643 | static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, | |
2644 | int flags, team_nl_send_func_t *send_func, | |
2645 | struct team_port *one_port) | |
3d249d4c JP |
2646 | { |
2647 | struct nlattr *port_list; | |
d90f889e | 2648 | struct nlmsghdr *nlh; |
3d249d4c JP |
2649 | void *hdr; |
2650 | struct team_port *port; | |
d90f889e JP |
2651 | int err; |
2652 | struct sk_buff *skb = NULL; | |
2653 | bool incomplete; | |
2654 | int i; | |
3d249d4c | 2655 | |
3f3e7ce4 JP |
2656 | port = list_first_entry_or_null(&team->port_list, |
2657 | struct team_port, list); | |
d90f889e JP |
2658 | |
2659 | start_again: | |
2660 | err = __send_and_alloc_skb(&skb, team, portid, send_func); | |
2661 | if (err) | |
2662 | return err; | |
2663 | ||
2664 | hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, | |
3d249d4c | 2665 | TEAM_CMD_PORT_LIST_GET); |
72ec0bc6 PB |
2666 | if (!hdr) { |
2667 | nlmsg_free(skb); | |
a326e6dd | 2668 | return -EMSGSIZE; |
72ec0bc6 | 2669 | } |
3d249d4c | 2670 | |
86ebb02d DM |
2671 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
2672 | goto nla_put_failure; | |
3d249d4c JP |
2673 | port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT); |
2674 | if (!port_list) | |
3221c646 | 2675 | goto nla_put_failure; |
3d249d4c | 2676 | |
d90f889e JP |
2677 | i = 0; |
2678 | incomplete = false; | |
3d249d4c | 2679 | |
d90f889e JP |
2680 | /* If one port is selected, called wants to send port list containing |
2681 | * only this port. Otherwise go through all listed ports and send all | |
2682 | */ | |
2683 | if (one_port) { | |
2684 | err = team_nl_fill_one_port_get(skb, one_port); | |
2685 | if (err) | |
2686 | goto errout; | |
3f3e7ce4 JP |
2687 | } else if (port) { |
2688 | list_for_each_entry_from(port, &team->port_list, list) { | |
d90f889e JP |
2689 | err = team_nl_fill_one_port_get(skb, port); |
2690 | if (err) { | |
2691 | if (err == -EMSGSIZE) { | |
2692 | if (!i) | |
2693 | goto errout; | |
2694 | incomplete = true; | |
2695 | break; | |
2696 | } | |
2697 | goto errout; | |
2698 | } | |
2699 | i++; | |
b82b9183 | 2700 | } |
3d249d4c JP |
2701 | } |
2702 | ||
2703 | nla_nest_end(skb, port_list); | |
d90f889e JP |
2704 | genlmsg_end(skb, hdr); |
2705 | if (incomplete) | |
2706 | goto start_again; | |
2707 | ||
2708 | send_done: | |
2709 | nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2710 | if (!nlh) { | |
2711 | err = __send_and_alloc_skb(&skb, team, portid, send_func); | |
2712 | if (err) | |
cbcc607e | 2713 | return err; |
d90f889e JP |
2714 | goto send_done; |
2715 | } | |
2716 | ||
2717 | return send_func(skb, team, portid); | |
3d249d4c JP |
2718 | |
2719 | nla_put_failure: | |
d90f889e JP |
2720 | err = -EMSGSIZE; |
2721 | errout: | |
d90f889e JP |
2722 | nlmsg_free(skb); |
2723 | return err; | |
3d249d4c JP |
2724 | } |
2725 | ||
2726 | static int team_nl_cmd_port_list_get(struct sk_buff *skb, | |
2727 | struct genl_info *info) | |
2728 | { | |
2729 | struct team *team; | |
2730 | int err; | |
2731 | ||
2732 | team = team_nl_team_get(info); | |
2733 | if (!team) | |
2734 | return -EINVAL; | |
2735 | ||
d90f889e JP |
2736 | err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq, |
2737 | NLM_F_ACK, team_nl_send_unicast, NULL); | |
3d249d4c JP |
2738 | |
2739 | team_nl_team_put(team); | |
2740 | ||
2741 | return err; | |
2742 | } | |
2743 | ||
4534de83 | 2744 | static const struct genl_ops team_nl_ops[] = { |
3d249d4c JP |
2745 | { |
2746 | .cmd = TEAM_CMD_NOOP, | |
2747 | .doit = team_nl_cmd_noop, | |
2748 | .policy = team_nl_policy, | |
2749 | }, | |
2750 | { | |
2751 | .cmd = TEAM_CMD_OPTIONS_SET, | |
2752 | .doit = team_nl_cmd_options_set, | |
2753 | .policy = team_nl_policy, | |
2754 | .flags = GENL_ADMIN_PERM, | |
2755 | }, | |
2756 | { | |
2757 | .cmd = TEAM_CMD_OPTIONS_GET, | |
2758 | .doit = team_nl_cmd_options_get, | |
2759 | .policy = team_nl_policy, | |
2760 | .flags = GENL_ADMIN_PERM, | |
2761 | }, | |
2762 | { | |
2763 | .cmd = TEAM_CMD_PORT_LIST_GET, | |
2764 | .doit = team_nl_cmd_port_list_get, | |
2765 | .policy = team_nl_policy, | |
2766 | .flags = GENL_ADMIN_PERM, | |
2767 | }, | |
2768 | }; | |
2769 | ||
2a94fe48 JB |
2770 | static const struct genl_multicast_group team_nl_mcgrps[] = { |
2771 | { .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, }, | |
3d249d4c JP |
2772 | }; |
2773 | ||
56989f6d | 2774 | static struct genl_family team_nl_family __ro_after_init = { |
489111e5 JB |
2775 | .name = TEAM_GENL_NAME, |
2776 | .version = TEAM_GENL_VERSION, | |
2777 | .maxattr = TEAM_ATTR_MAX, | |
2778 | .netnsok = true, | |
2779 | .module = THIS_MODULE, | |
2780 | .ops = team_nl_ops, | |
2781 | .n_ops = ARRAY_SIZE(team_nl_ops), | |
2782 | .mcgrps = team_nl_mcgrps, | |
2783 | .n_mcgrps = ARRAY_SIZE(team_nl_mcgrps), | |
2784 | }; | |
2785 | ||
9b00cf2d | 2786 | static int team_nl_send_multicast(struct sk_buff *skb, |
15e47304 | 2787 | struct team *team, u32 portid) |
9b00cf2d | 2788 | { |
68eb5503 | 2789 | return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev), |
2a94fe48 | 2790 | skb, 0, 0, GFP_KERNEL); |
9b00cf2d JP |
2791 | } |
2792 | ||
01048d9a JP |
2793 | static int team_nl_send_event_options_get(struct team *team, |
2794 | struct list_head *sel_opt_inst_list) | |
3d249d4c | 2795 | { |
9b00cf2d JP |
2796 | return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast, |
2797 | sel_opt_inst_list); | |
3d249d4c JP |
2798 | } |
2799 | ||
d90f889e JP |
2800 | static int team_nl_send_event_port_get(struct team *team, |
2801 | struct team_port *port) | |
3d249d4c | 2802 | { |
d90f889e JP |
2803 | return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast, |
2804 | port); | |
3d249d4c JP |
2805 | } |
2806 | ||
56989f6d | 2807 | static int __init team_nl_init(void) |
3d249d4c | 2808 | { |
489111e5 | 2809 | return genl_register_family(&team_nl_family); |
3d249d4c JP |
2810 | } |
2811 | ||
2812 | static void team_nl_fini(void) | |
2813 | { | |
2814 | genl_unregister_family(&team_nl_family); | |
2815 | } | |
2816 | ||
2817 | ||
2818 | /****************** | |
2819 | * Change checkers | |
2820 | ******************/ | |
2821 | ||
b82b9183 | 2822 | static void __team_options_change_check(struct team *team) |
3d249d4c JP |
2823 | { |
2824 | int err; | |
01048d9a JP |
2825 | struct team_option_inst *opt_inst; |
2826 | LIST_HEAD(sel_opt_inst_list); | |
3d249d4c | 2827 | |
01048d9a JP |
2828 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
2829 | if (opt_inst->changed) | |
2830 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
2831 | } | |
2832 | err = team_nl_send_event_options_get(team, &sel_opt_inst_list); | |
0c7517e9 | 2833 | if (err && err != -ESRCH) |
9b00cf2d JP |
2834 | netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n", |
2835 | err); | |
3d249d4c JP |
2836 | } |
2837 | ||
2838 | /* rtnl lock is held */ | |
10f3f51d JP |
2839 | |
2840 | static void __team_port_change_send(struct team_port *port, bool linkup) | |
3d249d4c JP |
2841 | { |
2842 | int err; | |
2843 | ||
b82b9183 | 2844 | port->changed = true; |
71472ec1 JP |
2845 | port->state.linkup = linkup; |
2846 | team_refresh_port_linkup(port); | |
3d249d4c | 2847 | if (linkup) { |
0ab6b544 | 2848 | struct ethtool_link_ksettings ecmd; |
3d249d4c | 2849 | |
0ab6b544 | 2850 | err = __ethtool_get_link_ksettings(port->dev, &ecmd); |
3d249d4c | 2851 | if (!err) { |
0ab6b544 DD |
2852 | port->state.speed = ecmd.base.speed; |
2853 | port->state.duplex = ecmd.base.duplex; | |
3d249d4c JP |
2854 | goto send_event; |
2855 | } | |
2856 | } | |
71472ec1 JP |
2857 | port->state.speed = 0; |
2858 | port->state.duplex = 0; | |
3d249d4c JP |
2859 | |
2860 | send_event: | |
d90f889e | 2861 | err = team_nl_send_event_port_get(port->team, port); |
0c7517e9 JP |
2862 | if (err && err != -ESRCH) |
2863 | netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n", | |
2864 | port->dev->name, err); | |
3d249d4c JP |
2865 | |
2866 | } | |
2867 | ||
06a7fc42 FL |
2868 | static void __team_carrier_check(struct team *team) |
2869 | { | |
2870 | struct team_port *port; | |
2871 | bool team_linkup; | |
2872 | ||
e185483e FL |
2873 | if (team->user_carrier_enabled) |
2874 | return; | |
2875 | ||
06a7fc42 FL |
2876 | team_linkup = false; |
2877 | list_for_each_entry(port, &team->port_list, list) { | |
2878 | if (port->linkup) { | |
2879 | team_linkup = true; | |
2880 | break; | |
2881 | } | |
2882 | } | |
2883 | ||
2884 | if (team_linkup) | |
2885 | netif_carrier_on(team->dev); | |
2886 | else | |
2887 | netif_carrier_off(team->dev); | |
2888 | } | |
2889 | ||
10f3f51d JP |
2890 | static void __team_port_change_check(struct team_port *port, bool linkup) |
2891 | { | |
2892 | if (port->state.linkup != linkup) | |
2893 | __team_port_change_send(port, linkup); | |
06a7fc42 | 2894 | __team_carrier_check(port->team); |
10f3f51d JP |
2895 | } |
2896 | ||
2897 | static void __team_port_change_port_added(struct team_port *port, bool linkup) | |
2898 | { | |
2899 | __team_port_change_send(port, linkup); | |
06a7fc42 | 2900 | __team_carrier_check(port->team); |
10f3f51d JP |
2901 | } |
2902 | ||
2903 | static void __team_port_change_port_removed(struct team_port *port) | |
2904 | { | |
2905 | port->removed = true; | |
2906 | __team_port_change_send(port, false); | |
06a7fc42 | 2907 | __team_carrier_check(port->team); |
10f3f51d JP |
2908 | } |
2909 | ||
3d249d4c JP |
2910 | static void team_port_change_check(struct team_port *port, bool linkup) |
2911 | { | |
2912 | struct team *team = port->team; | |
2913 | ||
61dc3461 | 2914 | mutex_lock(&team->lock); |
3d249d4c | 2915 | __team_port_change_check(port, linkup); |
61dc3461 | 2916 | mutex_unlock(&team->lock); |
3d249d4c JP |
2917 | } |
2918 | ||
0f1aad2b | 2919 | |
3d249d4c JP |
2920 | /************************************ |
2921 | * Net device notifier event handler | |
2922 | ************************************/ | |
2923 | ||
2924 | static int team_device_event(struct notifier_block *unused, | |
2925 | unsigned long event, void *ptr) | |
2926 | { | |
351638e7 | 2927 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
3d249d4c JP |
2928 | struct team_port *port; |
2929 | ||
2930 | port = team_port_get_rtnl(dev); | |
2931 | if (!port) | |
2932 | return NOTIFY_DONE; | |
2933 | ||
2934 | switch (event) { | |
2935 | case NETDEV_UP: | |
2936 | if (netif_carrier_ok(dev)) | |
2937 | team_port_change_check(port, true); | |
ed2da03c | 2938 | break; |
3d249d4c JP |
2939 | case NETDEV_DOWN: |
2940 | team_port_change_check(port, false); | |
ed2da03c | 2941 | break; |
3d249d4c JP |
2942 | case NETDEV_CHANGE: |
2943 | if (netif_running(port->dev)) | |
2944 | team_port_change_check(port, | |
f1d22a1e | 2945 | !!netif_oper_up(port->dev)); |
3d249d4c JP |
2946 | break; |
2947 | case NETDEV_UNREGISTER: | |
2948 | team_del_slave(port->team->dev, dev); | |
2949 | break; | |
2950 | case NETDEV_FEAT_CHANGE: | |
2951 | team_compute_features(port->team); | |
2952 | break; | |
b01f236c | 2953 | case NETDEV_PRECHANGEMTU: |
3d249d4c | 2954 | /* Forbid to change mtu of underlaying device */ |
9d0d68fa JP |
2955 | if (!port->team->port_mtu_change_allowed) |
2956 | return NOTIFY_BAD; | |
2957 | break; | |
3d249d4c JP |
2958 | case NETDEV_PRE_TYPE_CHANGE: |
2959 | /* Forbid to change type of underlaying device */ | |
2960 | return NOTIFY_BAD; | |
4aa5dee4 JP |
2961 | case NETDEV_RESEND_IGMP: |
2962 | /* Propagate to master device */ | |
2963 | call_netdevice_notifiers(event, port->team->dev); | |
2964 | break; | |
3d249d4c JP |
2965 | } |
2966 | return NOTIFY_DONE; | |
2967 | } | |
2968 | ||
2969 | static struct notifier_block team_notifier_block __read_mostly = { | |
2970 | .notifier_call = team_device_event, | |
2971 | }; | |
2972 | ||
2973 | ||
2974 | /*********************** | |
2975 | * Module init and exit | |
2976 | ***********************/ | |
2977 | ||
2978 | static int __init team_module_init(void) | |
2979 | { | |
2980 | int err; | |
2981 | ||
2982 | register_netdevice_notifier(&team_notifier_block); | |
2983 | ||
2984 | err = rtnl_link_register(&team_link_ops); | |
2985 | if (err) | |
2986 | goto err_rtnl_reg; | |
2987 | ||
2988 | err = team_nl_init(); | |
2989 | if (err) | |
2990 | goto err_nl_init; | |
2991 | ||
2992 | return 0; | |
2993 | ||
2994 | err_nl_init: | |
2995 | rtnl_link_unregister(&team_link_ops); | |
2996 | ||
2997 | err_rtnl_reg: | |
2998 | unregister_netdevice_notifier(&team_notifier_block); | |
2999 | ||
3000 | return err; | |
3001 | } | |
3002 | ||
3003 | static void __exit team_module_exit(void) | |
3004 | { | |
3005 | team_nl_fini(); | |
3006 | rtnl_link_unregister(&team_link_ops); | |
3007 | unregister_netdevice_notifier(&team_notifier_block); | |
3008 | } | |
3009 | ||
3010 | module_init(team_module_init); | |
3011 | module_exit(team_module_exit); | |
3012 | ||
3013 | MODULE_LICENSE("GPL v2"); | |
3014 | MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); | |
3015 | MODULE_DESCRIPTION("Ethernet team device driver"); | |
3016 | MODULE_ALIAS_RTNL_LINK(DRV_NAME); |