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> |
7f51c587 | 31 | #include <generated/utsrelease.h> |
3d249d4c JP |
32 | #include <linux/if_team.h> |
33 | ||
34 | #define DRV_NAME "team" | |
35 | ||
36 | ||
37 | /********** | |
38 | * Helpers | |
39 | **********/ | |
40 | ||
41 | #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT) | |
42 | ||
43 | static struct team_port *team_port_get_rcu(const struct net_device *dev) | |
44 | { | |
45 | struct team_port *port = rcu_dereference(dev->rx_handler_data); | |
46 | ||
47 | return team_port_exists(dev) ? port : NULL; | |
48 | } | |
49 | ||
50 | static struct team_port *team_port_get_rtnl(const struct net_device *dev) | |
51 | { | |
52 | struct team_port *port = rtnl_dereference(dev->rx_handler_data); | |
53 | ||
54 | return team_port_exists(dev) ? port : NULL; | |
55 | } | |
56 | ||
57 | /* | |
1d76efe1 | 58 | * Since the ability to change device address for open port device is tested in |
3d249d4c JP |
59 | * team_port_add, this function can be called without control of return value |
60 | */ | |
1d76efe1 JP |
61 | static int __set_port_dev_addr(struct net_device *port_dev, |
62 | const unsigned char *dev_addr) | |
3d249d4c JP |
63 | { |
64 | struct sockaddr addr; | |
65 | ||
1d76efe1 JP |
66 | memcpy(addr.sa_data, dev_addr, port_dev->addr_len); |
67 | addr.sa_family = port_dev->type; | |
3d249d4c JP |
68 | return dev_set_mac_address(port_dev, &addr); |
69 | } | |
70 | ||
1d76efe1 | 71 | static int team_port_set_orig_dev_addr(struct team_port *port) |
3d249d4c | 72 | { |
1d76efe1 | 73 | return __set_port_dev_addr(port->dev, port->orig.dev_addr); |
3d249d4c JP |
74 | } |
75 | ||
1d76efe1 | 76 | int team_port_set_team_dev_addr(struct team_port *port) |
3d249d4c | 77 | { |
1d76efe1 | 78 | return __set_port_dev_addr(port->dev, port->team->dev->dev_addr); |
3d249d4c | 79 | } |
1d76efe1 | 80 | EXPORT_SYMBOL(team_port_set_team_dev_addr); |
3d249d4c | 81 | |
71472ec1 JP |
82 | static void team_refresh_port_linkup(struct team_port *port) |
83 | { | |
84 | port->linkup = port->user.linkup_enabled ? port->user.linkup : | |
85 | port->state.linkup; | |
86 | } | |
3d249d4c | 87 | |
0f1aad2b | 88 | |
3d249d4c JP |
89 | /******************* |
90 | * Options handling | |
91 | *******************/ | |
92 | ||
80f7c668 JP |
93 | struct team_option_inst { /* One for each option instance */ |
94 | struct list_head list; | |
01048d9a | 95 | struct list_head tmp_list; |
80f7c668 | 96 | struct team_option *option; |
85d59a87 | 97 | struct team_option_inst_info info; |
80f7c668 JP |
98 | bool changed; |
99 | bool removed; | |
100 | }; | |
101 | ||
102 | static struct team_option *__team_find_option(struct team *team, | |
103 | const char *opt_name) | |
358b8382 JP |
104 | { |
105 | struct team_option *option; | |
106 | ||
107 | list_for_each_entry(option, &team->option_list, list) { | |
108 | if (strcmp(option->name, opt_name) == 0) | |
109 | return option; | |
110 | } | |
111 | return NULL; | |
112 | } | |
113 | ||
80f7c668 JP |
114 | static void __team_option_inst_del(struct team_option_inst *opt_inst) |
115 | { | |
116 | list_del(&opt_inst->list); | |
117 | kfree(opt_inst); | |
118 | } | |
119 | ||
120 | static void __team_option_inst_del_option(struct team *team, | |
121 | struct team_option *option) | |
122 | { | |
123 | struct team_option_inst *opt_inst, *tmp; | |
124 | ||
125 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
126 | if (opt_inst->option == option) | |
127 | __team_option_inst_del(opt_inst); | |
128 | } | |
129 | } | |
130 | ||
b1303326 JP |
131 | static int __team_option_inst_add(struct team *team, struct team_option *option, |
132 | struct team_port *port) | |
133 | { | |
134 | struct team_option_inst *opt_inst; | |
135 | unsigned int array_size; | |
136 | unsigned int i; | |
85d59a87 | 137 | int err; |
b1303326 JP |
138 | |
139 | array_size = option->array_size; | |
140 | if (!array_size) | |
141 | array_size = 1; /* No array but still need one instance */ | |
142 | ||
143 | for (i = 0; i < array_size; i++) { | |
144 | opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL); | |
145 | if (!opt_inst) | |
146 | return -ENOMEM; | |
147 | opt_inst->option = option; | |
85d59a87 JP |
148 | opt_inst->info.port = port; |
149 | opt_inst->info.array_index = i; | |
b1303326 JP |
150 | opt_inst->changed = true; |
151 | opt_inst->removed = false; | |
152 | list_add_tail(&opt_inst->list, &team->option_inst_list); | |
85d59a87 JP |
153 | if (option->init) { |
154 | err = option->init(team, &opt_inst->info); | |
155 | if (err) | |
156 | return err; | |
157 | } | |
158 | ||
b1303326 JP |
159 | } |
160 | return 0; | |
161 | } | |
162 | ||
80f7c668 JP |
163 | static int __team_option_inst_add_option(struct team *team, |
164 | struct team_option *option) | |
165 | { | |
166 | struct team_port *port; | |
167 | int err; | |
168 | ||
b1303326 | 169 | if (!option->per_port) { |
f88725ff | 170 | err = __team_option_inst_add(team, option, NULL); |
b1303326 JP |
171 | if (err) |
172 | goto inst_del_option; | |
173 | } | |
80f7c668 JP |
174 | |
175 | list_for_each_entry(port, &team->port_list, list) { | |
176 | err = __team_option_inst_add(team, option, port); | |
177 | if (err) | |
178 | goto inst_del_option; | |
179 | } | |
180 | return 0; | |
181 | ||
182 | inst_del_option: | |
183 | __team_option_inst_del_option(team, option); | |
184 | return err; | |
185 | } | |
186 | ||
187 | static void __team_option_inst_mark_removed_option(struct team *team, | |
188 | struct team_option *option) | |
189 | { | |
190 | struct team_option_inst *opt_inst; | |
191 | ||
192 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
193 | if (opt_inst->option == option) { | |
194 | opt_inst->changed = true; | |
195 | opt_inst->removed = true; | |
196 | } | |
197 | } | |
198 | } | |
199 | ||
200 | static void __team_option_inst_del_port(struct team *team, | |
201 | struct team_port *port) | |
202 | { | |
203 | struct team_option_inst *opt_inst, *tmp; | |
204 | ||
205 | list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { | |
206 | if (opt_inst->option->per_port && | |
85d59a87 | 207 | opt_inst->info.port == port) |
80f7c668 JP |
208 | __team_option_inst_del(opt_inst); |
209 | } | |
210 | } | |
211 | ||
212 | static int __team_option_inst_add_port(struct team *team, | |
213 | struct team_port *port) | |
214 | { | |
215 | struct team_option *option; | |
216 | int err; | |
217 | ||
218 | list_for_each_entry(option, &team->option_list, list) { | |
219 | if (!option->per_port) | |
220 | continue; | |
221 | err = __team_option_inst_add(team, option, port); | |
222 | if (err) | |
223 | goto inst_del_port; | |
224 | } | |
225 | return 0; | |
226 | ||
227 | inst_del_port: | |
228 | __team_option_inst_del_port(team, port); | |
229 | return err; | |
230 | } | |
231 | ||
232 | static void __team_option_inst_mark_removed_port(struct team *team, | |
233 | struct team_port *port) | |
234 | { | |
235 | struct team_option_inst *opt_inst; | |
236 | ||
237 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
85d59a87 | 238 | if (opt_inst->info.port == port) { |
80f7c668 JP |
239 | opt_inst->changed = true; |
240 | opt_inst->removed = true; | |
241 | } | |
242 | } | |
243 | } | |
244 | ||
245 | static int __team_options_register(struct team *team, | |
246 | const struct team_option *option, | |
247 | size_t option_count) | |
3d249d4c JP |
248 | { |
249 | int i; | |
2bba19ff | 250 | struct team_option **dst_opts; |
358b8382 | 251 | int err; |
3d249d4c | 252 | |
2bba19ff JP |
253 | dst_opts = kzalloc(sizeof(struct team_option *) * option_count, |
254 | GFP_KERNEL); | |
255 | if (!dst_opts) | |
256 | return -ENOMEM; | |
358b8382 | 257 | for (i = 0; i < option_count; i++, option++) { |
358b8382 JP |
258 | if (__team_find_option(team, option->name)) { |
259 | err = -EEXIST; | |
80f7c668 | 260 | goto alloc_rollback; |
358b8382 | 261 | } |
f8a15af0 JP |
262 | dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); |
263 | if (!dst_opts[i]) { | |
358b8382 | 264 | err = -ENOMEM; |
80f7c668 | 265 | goto alloc_rollback; |
358b8382 | 266 | } |
358b8382 JP |
267 | } |
268 | ||
b82b9183 | 269 | for (i = 0; i < option_count; i++) { |
80f7c668 JP |
270 | err = __team_option_inst_add_option(team, dst_opts[i]); |
271 | if (err) | |
272 | goto inst_rollback; | |
358b8382 | 273 | list_add_tail(&dst_opts[i]->list, &team->option_list); |
b82b9183 | 274 | } |
358b8382 | 275 | |
2bba19ff | 276 | kfree(dst_opts); |
358b8382 JP |
277 | return 0; |
278 | ||
80f7c668 JP |
279 | inst_rollback: |
280 | for (i--; i >= 0; i--) | |
281 | __team_option_inst_del_option(team, dst_opts[i]); | |
282 | ||
283 | i = option_count - 1; | |
284 | alloc_rollback: | |
285 | for (i--; i >= 0; i--) | |
358b8382 JP |
286 | kfree(dst_opts[i]); |
287 | ||
2bba19ff | 288 | kfree(dst_opts); |
358b8382 | 289 | return err; |
3d249d4c | 290 | } |
358b8382 | 291 | |
b82b9183 JP |
292 | static void __team_options_mark_removed(struct team *team, |
293 | const struct team_option *option, | |
294 | size_t option_count) | |
295 | { | |
296 | int i; | |
297 | ||
298 | for (i = 0; i < option_count; i++, option++) { | |
299 | struct team_option *del_opt; | |
3d249d4c | 300 | |
b82b9183 | 301 | del_opt = __team_find_option(team, option->name); |
80f7c668 JP |
302 | if (del_opt) |
303 | __team_option_inst_mark_removed_option(team, del_opt); | |
b82b9183 JP |
304 | } |
305 | } | |
3d249d4c JP |
306 | |
307 | static void __team_options_unregister(struct team *team, | |
358b8382 | 308 | const struct team_option *option, |
3d249d4c JP |
309 | size_t option_count) |
310 | { | |
311 | int i; | |
312 | ||
358b8382 JP |
313 | for (i = 0; i < option_count; i++, option++) { |
314 | struct team_option *del_opt; | |
315 | ||
316 | del_opt = __team_find_option(team, option->name); | |
317 | if (del_opt) { | |
80f7c668 | 318 | __team_option_inst_del_option(team, del_opt); |
358b8382 JP |
319 | list_del(&del_opt->list); |
320 | kfree(del_opt); | |
321 | } | |
322 | } | |
3d249d4c JP |
323 | } |
324 | ||
b82b9183 JP |
325 | static void __team_options_change_check(struct team *team); |
326 | ||
327 | int team_options_register(struct team *team, | |
328 | const struct team_option *option, | |
329 | size_t option_count) | |
330 | { | |
331 | int err; | |
332 | ||
333 | err = __team_options_register(team, option, option_count); | |
334 | if (err) | |
335 | return err; | |
336 | __team_options_change_check(team); | |
337 | return 0; | |
338 | } | |
339 | EXPORT_SYMBOL(team_options_register); | |
340 | ||
358b8382 JP |
341 | void team_options_unregister(struct team *team, |
342 | const struct team_option *option, | |
3d249d4c JP |
343 | size_t option_count) |
344 | { | |
b82b9183 JP |
345 | __team_options_mark_removed(team, option, option_count); |
346 | __team_options_change_check(team); | |
3d249d4c | 347 | __team_options_unregister(team, option, option_count); |
3d249d4c JP |
348 | } |
349 | EXPORT_SYMBOL(team_options_unregister); | |
350 | ||
80f7c668 JP |
351 | static int team_option_get(struct team *team, |
352 | struct team_option_inst *opt_inst, | |
353 | struct team_gsetter_ctx *ctx) | |
354 | { | |
f82b959d JP |
355 | if (!opt_inst->option->getter) |
356 | return -EOPNOTSUPP; | |
80f7c668 JP |
357 | return opt_inst->option->getter(team, ctx); |
358 | } | |
359 | ||
360 | static int team_option_set(struct team *team, | |
361 | struct team_option_inst *opt_inst, | |
362 | struct team_gsetter_ctx *ctx) | |
3d249d4c | 363 | { |
f82b959d JP |
364 | if (!opt_inst->option->setter) |
365 | return -EOPNOTSUPP; | |
2fcdb2c9 | 366 | return opt_inst->option->setter(team, ctx); |
3d249d4c JP |
367 | } |
368 | ||
0f1aad2b JP |
369 | void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info) |
370 | { | |
371 | struct team_option_inst *opt_inst; | |
372 | ||
373 | opt_inst = container_of(opt_inst_info, struct team_option_inst, info); | |
374 | opt_inst->changed = true; | |
375 | } | |
376 | EXPORT_SYMBOL(team_option_inst_set_change); | |
377 | ||
378 | void team_options_change_check(struct team *team) | |
379 | { | |
380 | __team_options_change_check(team); | |
381 | } | |
382 | EXPORT_SYMBOL(team_options_change_check); | |
383 | ||
384 | ||
3d249d4c JP |
385 | /**************** |
386 | * Mode handling | |
387 | ****************/ | |
388 | ||
389 | static LIST_HEAD(mode_list); | |
390 | static DEFINE_SPINLOCK(mode_list_lock); | |
391 | ||
0402788a JP |
392 | struct team_mode_item { |
393 | struct list_head list; | |
394 | const struct team_mode *mode; | |
395 | }; | |
396 | ||
397 | static struct team_mode_item *__find_mode(const char *kind) | |
3d249d4c | 398 | { |
0402788a | 399 | struct team_mode_item *mitem; |
3d249d4c | 400 | |
0402788a JP |
401 | list_for_each_entry(mitem, &mode_list, list) { |
402 | if (strcmp(mitem->mode->kind, kind) == 0) | |
403 | return mitem; | |
3d249d4c JP |
404 | } |
405 | return NULL; | |
406 | } | |
407 | ||
408 | static bool is_good_mode_name(const char *name) | |
409 | { | |
410 | while (*name != '\0') { | |
411 | if (!isalpha(*name) && !isdigit(*name) && *name != '_') | |
412 | return false; | |
413 | name++; | |
414 | } | |
415 | return true; | |
416 | } | |
417 | ||
0402788a | 418 | int team_mode_register(const struct team_mode *mode) |
3d249d4c JP |
419 | { |
420 | int err = 0; | |
0402788a | 421 | struct team_mode_item *mitem; |
3d249d4c JP |
422 | |
423 | if (!is_good_mode_name(mode->kind) || | |
424 | mode->priv_size > TEAM_MODE_PRIV_SIZE) | |
425 | return -EINVAL; | |
0402788a JP |
426 | |
427 | mitem = kmalloc(sizeof(*mitem), GFP_KERNEL); | |
428 | if (!mitem) | |
429 | return -ENOMEM; | |
430 | ||
3d249d4c JP |
431 | spin_lock(&mode_list_lock); |
432 | if (__find_mode(mode->kind)) { | |
433 | err = -EEXIST; | |
0402788a | 434 | kfree(mitem); |
3d249d4c JP |
435 | goto unlock; |
436 | } | |
0402788a JP |
437 | mitem->mode = mode; |
438 | list_add_tail(&mitem->list, &mode_list); | |
3d249d4c JP |
439 | unlock: |
440 | spin_unlock(&mode_list_lock); | |
441 | return err; | |
442 | } | |
443 | EXPORT_SYMBOL(team_mode_register); | |
444 | ||
0402788a | 445 | void team_mode_unregister(const struct team_mode *mode) |
3d249d4c | 446 | { |
0402788a JP |
447 | struct team_mode_item *mitem; |
448 | ||
3d249d4c | 449 | spin_lock(&mode_list_lock); |
0402788a JP |
450 | mitem = __find_mode(mode->kind); |
451 | if (mitem) { | |
452 | list_del_init(&mitem->list); | |
453 | kfree(mitem); | |
454 | } | |
3d249d4c | 455 | spin_unlock(&mode_list_lock); |
3d249d4c JP |
456 | } |
457 | EXPORT_SYMBOL(team_mode_unregister); | |
458 | ||
0402788a | 459 | static const struct team_mode *team_mode_get(const char *kind) |
3d249d4c | 460 | { |
0402788a JP |
461 | struct team_mode_item *mitem; |
462 | const struct team_mode *mode = NULL; | |
3d249d4c JP |
463 | |
464 | spin_lock(&mode_list_lock); | |
0402788a JP |
465 | mitem = __find_mode(kind); |
466 | if (!mitem) { | |
3d249d4c JP |
467 | spin_unlock(&mode_list_lock); |
468 | request_module("team-mode-%s", kind); | |
469 | spin_lock(&mode_list_lock); | |
0402788a | 470 | mitem = __find_mode(kind); |
3d249d4c | 471 | } |
0402788a JP |
472 | if (mitem) { |
473 | mode = mitem->mode; | |
3d249d4c JP |
474 | if (!try_module_get(mode->owner)) |
475 | mode = NULL; | |
0402788a | 476 | } |
3d249d4c JP |
477 | |
478 | spin_unlock(&mode_list_lock); | |
479 | return mode; | |
480 | } | |
481 | ||
482 | static void team_mode_put(const struct team_mode *mode) | |
483 | { | |
484 | module_put(mode->owner); | |
485 | } | |
486 | ||
487 | static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) | |
488 | { | |
489 | dev_kfree_skb_any(skb); | |
490 | return false; | |
491 | } | |
492 | ||
493 | rx_handler_result_t team_dummy_receive(struct team *team, | |
494 | struct team_port *port, | |
495 | struct sk_buff *skb) | |
496 | { | |
497 | return RX_HANDLER_ANOTHER; | |
498 | } | |
499 | ||
d299cd51 JP |
500 | static const struct team_mode __team_no_mode = { |
501 | .kind = "*NOMODE*", | |
502 | }; | |
503 | ||
504 | static bool team_is_mode_set(struct team *team) | |
505 | { | |
506 | return team->mode != &__team_no_mode; | |
507 | } | |
508 | ||
509 | static void team_set_no_mode(struct team *team) | |
510 | { | |
e185483e | 511 | team->user_carrier_enabled = false; |
d299cd51 JP |
512 | team->mode = &__team_no_mode; |
513 | } | |
514 | ||
122bb046 | 515 | static void __team_adjust_ops(struct team *team, int en_port_count) |
3d249d4c JP |
516 | { |
517 | /* | |
518 | * To avoid checks in rx/tx skb paths, ensure here that non-null and | |
519 | * correct ops are always set. | |
520 | */ | |
521 | ||
122bb046 JP |
522 | if (!en_port_count || !team_is_mode_set(team) || |
523 | !team->mode->ops->transmit) | |
3d249d4c JP |
524 | team->ops.transmit = team_dummy_transmit; |
525 | else | |
526 | team->ops.transmit = team->mode->ops->transmit; | |
527 | ||
122bb046 JP |
528 | if (!en_port_count || !team_is_mode_set(team) || |
529 | !team->mode->ops->receive) | |
3d249d4c JP |
530 | team->ops.receive = team_dummy_receive; |
531 | else | |
532 | team->ops.receive = team->mode->ops->receive; | |
533 | } | |
534 | ||
122bb046 JP |
535 | static void team_adjust_ops(struct team *team) |
536 | { | |
537 | __team_adjust_ops(team, team->en_port_count); | |
538 | } | |
539 | ||
3d249d4c JP |
540 | /* |
541 | * We can benefit from the fact that it's ensured no port is present | |
542 | * at the time of mode change. Therefore no packets are in fly so there's no | |
543 | * need to set mode operations in any special way. | |
544 | */ | |
545 | static int __team_change_mode(struct team *team, | |
546 | const struct team_mode *new_mode) | |
547 | { | |
548 | /* Check if mode was previously set and do cleanup if so */ | |
d299cd51 | 549 | if (team_is_mode_set(team)) { |
3d249d4c JP |
550 | void (*exit_op)(struct team *team) = team->ops.exit; |
551 | ||
552 | /* Clear ops area so no callback is called any longer */ | |
553 | memset(&team->ops, 0, sizeof(struct team_mode_ops)); | |
554 | team_adjust_ops(team); | |
555 | ||
556 | if (exit_op) | |
557 | exit_op(team); | |
558 | team_mode_put(team->mode); | |
d299cd51 | 559 | team_set_no_mode(team); |
3d249d4c JP |
560 | /* zero private data area */ |
561 | memset(&team->mode_priv, 0, | |
562 | sizeof(struct team) - offsetof(struct team, mode_priv)); | |
563 | } | |
564 | ||
565 | if (!new_mode) | |
566 | return 0; | |
567 | ||
568 | if (new_mode->ops->init) { | |
569 | int err; | |
570 | ||
571 | err = new_mode->ops->init(team); | |
572 | if (err) | |
573 | return err; | |
574 | } | |
575 | ||
576 | team->mode = new_mode; | |
577 | memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); | |
578 | team_adjust_ops(team); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | static int team_change_mode(struct team *team, const char *kind) | |
584 | { | |
0402788a | 585 | const struct team_mode *new_mode; |
3d249d4c JP |
586 | struct net_device *dev = team->dev; |
587 | int err; | |
588 | ||
589 | if (!list_empty(&team->port_list)) { | |
590 | netdev_err(dev, "No ports can be present during mode change\n"); | |
591 | return -EBUSY; | |
592 | } | |
593 | ||
d299cd51 | 594 | if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) { |
3d249d4c JP |
595 | netdev_err(dev, "Unable to change to the same mode the team is in\n"); |
596 | return -EINVAL; | |
597 | } | |
598 | ||
599 | new_mode = team_mode_get(kind); | |
600 | if (!new_mode) { | |
601 | netdev_err(dev, "Mode \"%s\" not found\n", kind); | |
602 | return -EINVAL; | |
603 | } | |
604 | ||
605 | err = __team_change_mode(team, new_mode); | |
606 | if (err) { | |
607 | netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); | |
608 | team_mode_put(new_mode); | |
609 | return err; | |
610 | } | |
611 | ||
612 | netdev_info(dev, "Mode changed to \"%s\"\n", kind); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | ||
617 | /************************ | |
618 | * Rx path frame handler | |
619 | ************************/ | |
620 | ||
621 | /* note: already called with rcu_read_lock */ | |
622 | static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) | |
623 | { | |
624 | struct sk_buff *skb = *pskb; | |
625 | struct team_port *port; | |
626 | struct team *team; | |
627 | rx_handler_result_t res; | |
628 | ||
629 | skb = skb_share_check(skb, GFP_ATOMIC); | |
630 | if (!skb) | |
631 | return RX_HANDLER_CONSUMED; | |
632 | ||
633 | *pskb = skb; | |
634 | ||
635 | port = team_port_get_rcu(skb->dev); | |
636 | team = port->team; | |
19a0b58e JP |
637 | if (!team_port_enabled(port)) { |
638 | /* allow exact match delivery for disabled ports */ | |
639 | res = RX_HANDLER_EXACT; | |
640 | } else { | |
641 | res = team->ops.receive(team, port, skb); | |
642 | } | |
3d249d4c JP |
643 | if (res == RX_HANDLER_ANOTHER) { |
644 | struct team_pcpu_stats *pcpu_stats; | |
645 | ||
646 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
647 | u64_stats_update_begin(&pcpu_stats->syncp); | |
648 | pcpu_stats->rx_packets++; | |
649 | pcpu_stats->rx_bytes += skb->len; | |
650 | if (skb->pkt_type == PACKET_MULTICAST) | |
651 | pcpu_stats->rx_multicast++; | |
652 | u64_stats_update_end(&pcpu_stats->syncp); | |
653 | ||
654 | skb->dev = team->dev; | |
655 | } else { | |
656 | this_cpu_inc(team->pcpu_stats->rx_dropped); | |
657 | } | |
658 | ||
659 | return res; | |
660 | } | |
661 | ||
662 | ||
8ff5105a JP |
663 | /************************************* |
664 | * Multiqueue Tx port select override | |
665 | *************************************/ | |
666 | ||
667 | static int team_queue_override_init(struct team *team) | |
668 | { | |
669 | struct list_head *listarr; | |
670 | unsigned int queue_cnt = team->dev->num_tx_queues - 1; | |
671 | unsigned int i; | |
672 | ||
673 | if (!queue_cnt) | |
674 | return 0; | |
675 | listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL); | |
676 | if (!listarr) | |
677 | return -ENOMEM; | |
678 | team->qom_lists = listarr; | |
679 | for (i = 0; i < queue_cnt; i++) | |
680 | INIT_LIST_HEAD(listarr++); | |
681 | return 0; | |
682 | } | |
683 | ||
684 | static void team_queue_override_fini(struct team *team) | |
685 | { | |
686 | kfree(team->qom_lists); | |
687 | } | |
688 | ||
689 | static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id) | |
690 | { | |
691 | return &team->qom_lists[queue_id - 1]; | |
692 | } | |
693 | ||
694 | /* | |
695 | * note: already called with rcu_read_lock | |
696 | */ | |
697 | static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb) | |
698 | { | |
699 | struct list_head *qom_list; | |
700 | struct team_port *port; | |
701 | ||
702 | if (!team->queue_override_enabled || !skb->queue_mapping) | |
703 | return false; | |
704 | qom_list = __team_get_qom_list(team, skb->queue_mapping); | |
705 | list_for_each_entry_rcu(port, qom_list, qom_list) { | |
706 | if (!team_dev_queue_xmit(team, port, skb)) | |
707 | return true; | |
708 | } | |
709 | return false; | |
710 | } | |
711 | ||
712 | static void __team_queue_override_port_del(struct team *team, | |
713 | struct team_port *port) | |
714 | { | |
715 | list_del_rcu(&port->qom_list); | |
716 | synchronize_rcu(); | |
717 | INIT_LIST_HEAD(&port->qom_list); | |
718 | } | |
719 | ||
720 | static bool team_queue_override_port_has_gt_prio_than(struct team_port *port, | |
721 | struct team_port *cur) | |
722 | { | |
723 | if (port->priority < cur->priority) | |
724 | return true; | |
725 | if (port->priority > cur->priority) | |
726 | return false; | |
727 | if (port->index < cur->index) | |
728 | return true; | |
729 | return false; | |
730 | } | |
731 | ||
732 | static void __team_queue_override_port_add(struct team *team, | |
733 | struct team_port *port) | |
734 | { | |
735 | struct team_port *cur; | |
736 | struct list_head *qom_list; | |
737 | struct list_head *node; | |
738 | ||
739 | if (!port->queue_id || !team_port_enabled(port)) | |
740 | return; | |
741 | ||
742 | qom_list = __team_get_qom_list(team, port->queue_id); | |
743 | node = qom_list; | |
744 | list_for_each_entry(cur, qom_list, qom_list) { | |
745 | if (team_queue_override_port_has_gt_prio_than(port, cur)) | |
746 | break; | |
747 | node = &cur->qom_list; | |
748 | } | |
749 | list_add_tail_rcu(&port->qom_list, node); | |
750 | } | |
751 | ||
752 | static void __team_queue_override_enabled_check(struct team *team) | |
753 | { | |
754 | struct team_port *port; | |
755 | bool enabled = false; | |
756 | ||
757 | list_for_each_entry(port, &team->port_list, list) { | |
758 | if (!list_empty(&port->qom_list)) { | |
759 | enabled = true; | |
760 | break; | |
761 | } | |
762 | } | |
763 | if (enabled == team->queue_override_enabled) | |
764 | return; | |
765 | netdev_dbg(team->dev, "%s queue override\n", | |
766 | enabled ? "Enabling" : "Disabling"); | |
767 | team->queue_override_enabled = enabled; | |
768 | } | |
769 | ||
770 | static void team_queue_override_port_refresh(struct team *team, | |
771 | struct team_port *port) | |
772 | { | |
773 | __team_queue_override_port_del(team, port); | |
774 | __team_queue_override_port_add(team, port); | |
775 | __team_queue_override_enabled_check(team); | |
776 | } | |
777 | ||
778 | ||
3d249d4c JP |
779 | /**************** |
780 | * Port handling | |
781 | ****************/ | |
782 | ||
783 | static bool team_port_find(const struct team *team, | |
784 | const struct team_port *port) | |
785 | { | |
786 | struct team_port *cur; | |
787 | ||
788 | list_for_each_entry(cur, &team->port_list, list) | |
789 | if (cur == port) | |
790 | return true; | |
791 | return false; | |
792 | } | |
793 | ||
794 | /* | |
19a0b58e JP |
795 | * Enable/disable port by adding to enabled port hashlist and setting |
796 | * port->index (Might be racy so reader could see incorrect ifindex when | |
797 | * processing a flying packet, but that is not a problem). Write guarded | |
798 | * by team->lock. | |
3d249d4c | 799 | */ |
19a0b58e JP |
800 | static void team_port_enable(struct team *team, |
801 | struct team_port *port) | |
3d249d4c | 802 | { |
19a0b58e JP |
803 | if (team_port_enabled(port)) |
804 | return; | |
805 | port->index = team->en_port_count++; | |
3d249d4c JP |
806 | hlist_add_head_rcu(&port->hlist, |
807 | team_port_index_hash(team, port->index)); | |
122bb046 | 808 | team_adjust_ops(team); |
8ff5105a | 809 | team_queue_override_port_refresh(team, port); |
4bccfd17 JP |
810 | if (team->ops.port_enabled) |
811 | team->ops.port_enabled(team, port); | |
3d249d4c JP |
812 | } |
813 | ||
814 | static void __reconstruct_port_hlist(struct team *team, int rm_index) | |
815 | { | |
816 | int i; | |
817 | struct team_port *port; | |
818 | ||
19a0b58e | 819 | for (i = rm_index + 1; i < team->en_port_count; i++) { |
3d249d4c JP |
820 | port = team_get_port_by_index(team, i); |
821 | hlist_del_rcu(&port->hlist); | |
822 | port->index--; | |
823 | hlist_add_head_rcu(&port->hlist, | |
824 | team_port_index_hash(team, port->index)); | |
825 | } | |
826 | } | |
827 | ||
19a0b58e JP |
828 | static void team_port_disable(struct team *team, |
829 | struct team_port *port) | |
3d249d4c | 830 | { |
19a0b58e JP |
831 | if (!team_port_enabled(port)) |
832 | return; | |
4bccfd17 JP |
833 | if (team->ops.port_disabled) |
834 | team->ops.port_disabled(team, port); | |
3d249d4c | 835 | hlist_del_rcu(&port->hlist); |
122bb046 | 836 | __reconstruct_port_hlist(team, port->index); |
19a0b58e | 837 | port->index = -1; |
8ff5105a | 838 | team_queue_override_port_refresh(team, port); |
122bb046 JP |
839 | __team_adjust_ops(team, team->en_port_count - 1); |
840 | /* | |
841 | * Wait until readers see adjusted ops. This ensures that | |
842 | * readers never see team->en_port_count == 0 | |
843 | */ | |
844 | synchronize_rcu(); | |
845 | team->en_port_count--; | |
3d249d4c JP |
846 | } |
847 | ||
848 | #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \ | |
849 | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ | |
850 | NETIF_F_HIGHDMA | NETIF_F_LRO) | |
851 | ||
852 | static void __team_compute_features(struct team *team) | |
853 | { | |
854 | struct team_port *port; | |
855 | u32 vlan_features = TEAM_VLAN_FEATURES; | |
856 | unsigned short max_hard_header_len = ETH_HLEN; | |
dc905951 | 857 | unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE; |
3d249d4c JP |
858 | |
859 | list_for_each_entry(port, &team->port_list, list) { | |
860 | vlan_features = netdev_increment_features(vlan_features, | |
861 | port->dev->vlan_features, | |
862 | TEAM_VLAN_FEATURES); | |
863 | ||
dc905951 | 864 | dst_release_flag &= port->dev->priv_flags; |
3d249d4c JP |
865 | if (port->dev->hard_header_len > max_hard_header_len) |
866 | max_hard_header_len = port->dev->hard_header_len; | |
867 | } | |
868 | ||
869 | team->dev->vlan_features = vlan_features; | |
870 | team->dev->hard_header_len = max_hard_header_len; | |
871 | ||
dc905951 JP |
872 | flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE; |
873 | team->dev->priv_flags = flags | dst_release_flag; | |
874 | ||
3d249d4c JP |
875 | netdev_change_features(team->dev); |
876 | } | |
877 | ||
878 | static void team_compute_features(struct team *team) | |
879 | { | |
61dc3461 | 880 | mutex_lock(&team->lock); |
3d249d4c | 881 | __team_compute_features(team); |
61dc3461 | 882 | mutex_unlock(&team->lock); |
3d249d4c JP |
883 | } |
884 | ||
885 | static int team_port_enter(struct team *team, struct team_port *port) | |
886 | { | |
887 | int err = 0; | |
888 | ||
889 | dev_hold(team->dev); | |
890 | port->dev->priv_flags |= IFF_TEAM_PORT; | |
891 | if (team->ops.port_enter) { | |
892 | err = team->ops.port_enter(team, port); | |
893 | if (err) { | |
894 | netdev_err(team->dev, "Device %s failed to enter team mode\n", | |
895 | port->dev->name); | |
896 | goto err_port_enter; | |
897 | } | |
898 | } | |
899 | ||
900 | return 0; | |
901 | ||
902 | err_port_enter: | |
903 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
904 | dev_put(team->dev); | |
905 | ||
906 | return err; | |
907 | } | |
908 | ||
909 | static void team_port_leave(struct team *team, struct team_port *port) | |
910 | { | |
911 | if (team->ops.port_leave) | |
912 | team->ops.port_leave(team, port); | |
913 | port->dev->priv_flags &= ~IFF_TEAM_PORT; | |
914 | dev_put(team->dev); | |
915 | } | |
916 | ||
bd2d0837 | 917 | #ifdef CONFIG_NET_POLL_CONTROLLER |
47be03a2 AW |
918 | static int team_port_enable_netpoll(struct team *team, struct team_port *port, |
919 | gfp_t gfp) | |
bd2d0837 JP |
920 | { |
921 | struct netpoll *np; | |
922 | int err; | |
923 | ||
47be03a2 | 924 | np = kzalloc(sizeof(*np), gfp); |
bd2d0837 JP |
925 | if (!np) |
926 | return -ENOMEM; | |
927 | ||
47be03a2 | 928 | err = __netpoll_setup(np, port->dev, gfp); |
bd2d0837 JP |
929 | if (err) { |
930 | kfree(np); | |
931 | return err; | |
932 | } | |
933 | port->np = np; | |
934 | return err; | |
935 | } | |
936 | ||
937 | static void team_port_disable_netpoll(struct team_port *port) | |
938 | { | |
939 | struct netpoll *np = port->np; | |
940 | ||
941 | if (!np) | |
942 | return; | |
943 | port->np = NULL; | |
944 | ||
945 | /* Wait for transmitting packets to finish before freeing. */ | |
946 | synchronize_rcu_bh(); | |
947 | __netpoll_cleanup(np); | |
948 | kfree(np); | |
949 | } | |
950 | ||
951 | static struct netpoll_info *team_netpoll_info(struct team *team) | |
952 | { | |
953 | return team->dev->npinfo; | |
954 | } | |
955 | ||
956 | #else | |
47be03a2 AW |
957 | static int team_port_enable_netpoll(struct team *team, struct team_port *port, |
958 | gfp_t gfp) | |
bd2d0837 JP |
959 | { |
960 | return 0; | |
961 | } | |
962 | static void team_port_disable_netpoll(struct team_port *port) | |
963 | { | |
964 | } | |
965 | static struct netpoll_info *team_netpoll_info(struct team *team) | |
966 | { | |
967 | return NULL; | |
968 | } | |
969 | #endif | |
970 | ||
10f3f51d | 971 | static void __team_port_change_port_added(struct team_port *port, bool linkup); |
1d76efe1 JP |
972 | static int team_dev_type_check_change(struct net_device *dev, |
973 | struct net_device *port_dev); | |
3d249d4c JP |
974 | |
975 | static int team_port_add(struct team *team, struct net_device *port_dev) | |
976 | { | |
977 | struct net_device *dev = team->dev; | |
978 | struct team_port *port; | |
979 | char *portname = port_dev->name; | |
980 | int err; | |
981 | ||
1d76efe1 JP |
982 | if (port_dev->flags & IFF_LOOPBACK) { |
983 | netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n", | |
3d249d4c JP |
984 | portname); |
985 | return -EINVAL; | |
986 | } | |
987 | ||
988 | if (team_port_exists(port_dev)) { | |
989 | netdev_err(dev, "Device %s is already a port " | |
990 | "of a team device\n", portname); | |
991 | return -EBUSY; | |
992 | } | |
993 | ||
2c33bb37 JP |
994 | if (port_dev->features & NETIF_F_VLAN_CHALLENGED && |
995 | vlan_uses_dev(dev)) { | |
996 | netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n", | |
997 | portname); | |
998 | return -EPERM; | |
999 | } | |
1000 | ||
1d76efe1 JP |
1001 | err = team_dev_type_check_change(dev, port_dev); |
1002 | if (err) | |
1003 | return err; | |
1004 | ||
3d249d4c JP |
1005 | if (port_dev->flags & IFF_UP) { |
1006 | netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", | |
1007 | portname); | |
1008 | return -EBUSY; | |
1009 | } | |
1010 | ||
5149ee58 JP |
1011 | port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size, |
1012 | GFP_KERNEL); | |
3d249d4c JP |
1013 | if (!port) |
1014 | return -ENOMEM; | |
1015 | ||
1016 | port->dev = port_dev; | |
1017 | port->team = team; | |
8ff5105a | 1018 | INIT_LIST_HEAD(&port->qom_list); |
3d249d4c JP |
1019 | |
1020 | port->orig.mtu = port_dev->mtu; | |
1021 | err = dev_set_mtu(port_dev, dev->mtu); | |
1022 | if (err) { | |
1023 | netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); | |
1024 | goto err_set_mtu; | |
1025 | } | |
1026 | ||
1d76efe1 | 1027 | memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len); |
3d249d4c JP |
1028 | |
1029 | err = team_port_enter(team, port); | |
1030 | if (err) { | |
1031 | netdev_err(dev, "Device %s failed to enter team mode\n", | |
1032 | portname); | |
1033 | goto err_port_enter; | |
1034 | } | |
1035 | ||
1036 | err = dev_open(port_dev); | |
1037 | if (err) { | |
1038 | netdev_dbg(dev, "Device %s opening failed\n", | |
1039 | portname); | |
1040 | goto err_dev_open; | |
1041 | } | |
1042 | ||
57459185 JP |
1043 | err = vlan_vids_add_by_dev(port_dev, dev); |
1044 | if (err) { | |
1045 | netdev_err(dev, "Failed to add vlan ids to device %s\n", | |
1046 | portname); | |
1047 | goto err_vids_add; | |
1048 | } | |
1049 | ||
bd2d0837 | 1050 | if (team_netpoll_info(team)) { |
47be03a2 | 1051 | err = team_port_enable_netpoll(team, port, GFP_KERNEL); |
bd2d0837 JP |
1052 | if (err) { |
1053 | netdev_err(dev, "Failed to enable netpoll on device %s\n", | |
1054 | portname); | |
1055 | goto err_enable_netpoll; | |
1056 | } | |
1057 | } | |
1058 | ||
b1cc9850 | 1059 | err = netdev_master_upper_dev_link(port_dev, dev); |
3d249d4c | 1060 | if (err) { |
b1cc9850 JP |
1061 | netdev_err(dev, "Device %s failed to set upper link\n", |
1062 | portname); | |
1063 | goto err_set_upper_link; | |
3d249d4c JP |
1064 | } |
1065 | ||
1066 | err = netdev_rx_handler_register(port_dev, team_handle_frame, | |
1067 | port); | |
1068 | if (err) { | |
1069 | netdev_err(dev, "Device %s failed to register rx_handler\n", | |
1070 | portname); | |
1071 | goto err_handler_register; | |
1072 | } | |
1073 | ||
35b384bd | 1074 | err = __team_option_inst_add_port(team, port); |
80f7c668 JP |
1075 | if (err) { |
1076 | netdev_err(dev, "Device %s failed to add per-port options\n", | |
1077 | portname); | |
1078 | goto err_option_port_add; | |
1079 | } | |
1080 | ||
19a0b58e JP |
1081 | port->index = -1; |
1082 | team_port_enable(team, port); | |
1083 | list_add_tail_rcu(&port->list, &team->port_list); | |
3d249d4c | 1084 | __team_compute_features(team); |
10f3f51d | 1085 | __team_port_change_port_added(port, !!netif_carrier_ok(port_dev)); |
35b384bd | 1086 | __team_options_change_check(team); |
3d249d4c JP |
1087 | |
1088 | netdev_info(dev, "Port device %s added\n", portname); | |
1089 | ||
1090 | return 0; | |
1091 | ||
80f7c668 JP |
1092 | err_option_port_add: |
1093 | netdev_rx_handler_unregister(port_dev); | |
1094 | ||
3d249d4c | 1095 | err_handler_register: |
b1cc9850 | 1096 | netdev_upper_dev_unlink(port_dev, dev); |
3d249d4c | 1097 | |
b1cc9850 | 1098 | err_set_upper_link: |
bd2d0837 JP |
1099 | team_port_disable_netpoll(port); |
1100 | ||
1101 | err_enable_netpoll: | |
57459185 JP |
1102 | vlan_vids_del_by_dev(port_dev, dev); |
1103 | ||
1104 | err_vids_add: | |
3d249d4c JP |
1105 | dev_close(port_dev); |
1106 | ||
1107 | err_dev_open: | |
1108 | team_port_leave(team, port); | |
1d76efe1 | 1109 | team_port_set_orig_dev_addr(port); |
3d249d4c JP |
1110 | |
1111 | err_port_enter: | |
1112 | dev_set_mtu(port_dev, port->orig.mtu); | |
1113 | ||
1114 | err_set_mtu: | |
1115 | kfree(port); | |
1116 | ||
1117 | return err; | |
1118 | } | |
1119 | ||
10f3f51d JP |
1120 | static void __team_port_change_port_removed(struct team_port *port); |
1121 | ||
3d249d4c JP |
1122 | static int team_port_del(struct team *team, struct net_device *port_dev) |
1123 | { | |
1124 | struct net_device *dev = team->dev; | |
1125 | struct team_port *port; | |
1126 | char *portname = port_dev->name; | |
1127 | ||
1128 | port = team_port_get_rtnl(port_dev); | |
1129 | if (!port || !team_port_find(team, port)) { | |
1130 | netdev_err(dev, "Device %s does not act as a port of this team\n", | |
1131 | portname); | |
1132 | return -ENOENT; | |
1133 | } | |
1134 | ||
19a0b58e JP |
1135 | team_port_disable(team, port); |
1136 | list_del_rcu(&port->list); | |
3d249d4c | 1137 | netdev_rx_handler_unregister(port_dev); |
b1cc9850 | 1138 | netdev_upper_dev_unlink(port_dev, dev); |
bd2d0837 | 1139 | team_port_disable_netpoll(port); |
57459185 | 1140 | vlan_vids_del_by_dev(port_dev, dev); |
3d249d4c JP |
1141 | dev_close(port_dev); |
1142 | team_port_leave(team, port); | |
c3969d80 JP |
1143 | |
1144 | __team_option_inst_mark_removed_port(team, port); | |
1145 | __team_options_change_check(team); | |
1146 | __team_option_inst_del_port(team, port); | |
1147 | __team_port_change_port_removed(port); | |
1148 | ||
1d76efe1 | 1149 | team_port_set_orig_dev_addr(port); |
3d249d4c JP |
1150 | dev_set_mtu(port_dev, port->orig.mtu); |
1151 | synchronize_rcu(); | |
1152 | kfree(port); | |
1153 | netdev_info(dev, "Port device %s removed\n", portname); | |
1154 | __team_compute_features(team); | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | ||
1160 | /***************** | |
1161 | * Net device ops | |
1162 | *****************/ | |
1163 | ||
80f7c668 | 1164 | static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 1165 | { |
d299cd51 | 1166 | ctx->data.str_val = team->mode->kind; |
3d249d4c JP |
1167 | return 0; |
1168 | } | |
1169 | ||
80f7c668 | 1170 | static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) |
3d249d4c | 1171 | { |
80f7c668 | 1172 | return team_change_mode(team, ctx->data.str_val); |
3d249d4c JP |
1173 | } |
1174 | ||
acd69962 JP |
1175 | static int team_port_en_option_get(struct team *team, |
1176 | struct team_gsetter_ctx *ctx) | |
1177 | { | |
85d59a87 JP |
1178 | struct team_port *port = ctx->info->port; |
1179 | ||
1180 | ctx->data.bool_val = team_port_enabled(port); | |
acd69962 JP |
1181 | return 0; |
1182 | } | |
1183 | ||
1184 | static int team_port_en_option_set(struct team *team, | |
1185 | struct team_gsetter_ctx *ctx) | |
1186 | { | |
85d59a87 JP |
1187 | struct team_port *port = ctx->info->port; |
1188 | ||
acd69962 | 1189 | if (ctx->data.bool_val) |
85d59a87 | 1190 | team_port_enable(team, port); |
acd69962 | 1191 | else |
85d59a87 | 1192 | team_port_disable(team, port); |
acd69962 JP |
1193 | return 0; |
1194 | } | |
1195 | ||
71472ec1 JP |
1196 | static int team_user_linkup_option_get(struct team *team, |
1197 | struct team_gsetter_ctx *ctx) | |
1198 | { | |
85d59a87 JP |
1199 | struct team_port *port = ctx->info->port; |
1200 | ||
1201 | ctx->data.bool_val = port->user.linkup; | |
71472ec1 JP |
1202 | return 0; |
1203 | } | |
1204 | ||
1205 | static int team_user_linkup_option_set(struct team *team, | |
1206 | struct team_gsetter_ctx *ctx) | |
1207 | { | |
85d59a87 JP |
1208 | struct team_port *port = ctx->info->port; |
1209 | ||
1210 | port->user.linkup = ctx->data.bool_val; | |
1211 | team_refresh_port_linkup(port); | |
71472ec1 JP |
1212 | return 0; |
1213 | } | |
1214 | ||
1215 | static int team_user_linkup_en_option_get(struct team *team, | |
1216 | struct team_gsetter_ctx *ctx) | |
1217 | { | |
85d59a87 | 1218 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1219 | |
1220 | ctx->data.bool_val = port->user.linkup_enabled; | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | static int team_user_linkup_en_option_set(struct team *team, | |
1225 | struct team_gsetter_ctx *ctx) | |
1226 | { | |
85d59a87 | 1227 | struct team_port *port = ctx->info->port; |
71472ec1 JP |
1228 | |
1229 | port->user.linkup_enabled = ctx->data.bool_val; | |
85d59a87 | 1230 | team_refresh_port_linkup(port); |
71472ec1 JP |
1231 | return 0; |
1232 | } | |
1233 | ||
a86fc6b7 JP |
1234 | static int team_priority_option_get(struct team *team, |
1235 | struct team_gsetter_ctx *ctx) | |
1236 | { | |
1237 | struct team_port *port = ctx->info->port; | |
1238 | ||
1239 | ctx->data.s32_val = port->priority; | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | static int team_priority_option_set(struct team *team, | |
1244 | struct team_gsetter_ctx *ctx) | |
1245 | { | |
1246 | struct team_port *port = ctx->info->port; | |
1247 | ||
1248 | port->priority = ctx->data.s32_val; | |
8ff5105a JP |
1249 | team_queue_override_port_refresh(team, port); |
1250 | return 0; | |
1251 | } | |
1252 | ||
1253 | static int team_queue_id_option_get(struct team *team, | |
1254 | struct team_gsetter_ctx *ctx) | |
1255 | { | |
1256 | struct team_port *port = ctx->info->port; | |
1257 | ||
1258 | ctx->data.u32_val = port->queue_id; | |
a86fc6b7 JP |
1259 | return 0; |
1260 | } | |
1261 | ||
8ff5105a JP |
1262 | static int team_queue_id_option_set(struct team *team, |
1263 | struct team_gsetter_ctx *ctx) | |
1264 | { | |
1265 | struct team_port *port = ctx->info->port; | |
1266 | ||
1267 | if (port->queue_id == ctx->data.u32_val) | |
1268 | return 0; | |
1269 | if (ctx->data.u32_val >= team->dev->real_num_tx_queues) | |
1270 | return -EINVAL; | |
1271 | port->queue_id = ctx->data.u32_val; | |
1272 | team_queue_override_port_refresh(team, port); | |
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | ||
358b8382 | 1277 | static const struct team_option team_options[] = { |
3d249d4c JP |
1278 | { |
1279 | .name = "mode", | |
1280 | .type = TEAM_OPTION_TYPE_STRING, | |
1281 | .getter = team_mode_option_get, | |
1282 | .setter = team_mode_option_set, | |
1283 | }, | |
acd69962 JP |
1284 | { |
1285 | .name = "enabled", | |
1286 | .type = TEAM_OPTION_TYPE_BOOL, | |
1287 | .per_port = true, | |
1288 | .getter = team_port_en_option_get, | |
1289 | .setter = team_port_en_option_set, | |
1290 | }, | |
71472ec1 JP |
1291 | { |
1292 | .name = "user_linkup", | |
1293 | .type = TEAM_OPTION_TYPE_BOOL, | |
1294 | .per_port = true, | |
1295 | .getter = team_user_linkup_option_get, | |
1296 | .setter = team_user_linkup_option_set, | |
1297 | }, | |
1298 | { | |
1299 | .name = "user_linkup_enabled", | |
1300 | .type = TEAM_OPTION_TYPE_BOOL, | |
1301 | .per_port = true, | |
1302 | .getter = team_user_linkup_en_option_get, | |
1303 | .setter = team_user_linkup_en_option_set, | |
1304 | }, | |
a86fc6b7 JP |
1305 | { |
1306 | .name = "priority", | |
1307 | .type = TEAM_OPTION_TYPE_S32, | |
1308 | .per_port = true, | |
1309 | .getter = team_priority_option_get, | |
1310 | .setter = team_priority_option_set, | |
1311 | }, | |
8ff5105a JP |
1312 | { |
1313 | .name = "queue_id", | |
1314 | .type = TEAM_OPTION_TYPE_U32, | |
1315 | .per_port = true, | |
1316 | .getter = team_queue_id_option_get, | |
1317 | .setter = team_queue_id_option_set, | |
1318 | }, | |
3d249d4c JP |
1319 | }; |
1320 | ||
6c85f2bd JP |
1321 | static struct lock_class_key team_netdev_xmit_lock_key; |
1322 | static struct lock_class_key team_netdev_addr_lock_key; | |
b3c581d5 | 1323 | static struct lock_class_key team_tx_busylock_key; |
6c85f2bd JP |
1324 | |
1325 | static void team_set_lockdep_class_one(struct net_device *dev, | |
1326 | struct netdev_queue *txq, | |
1327 | void *unused) | |
1328 | { | |
1329 | lockdep_set_class(&txq->_xmit_lock, &team_netdev_xmit_lock_key); | |
1330 | } | |
1331 | ||
1332 | static void team_set_lockdep_class(struct net_device *dev) | |
1333 | { | |
1334 | lockdep_set_class(&dev->addr_list_lock, &team_netdev_addr_lock_key); | |
1335 | netdev_for_each_tx_queue(dev, team_set_lockdep_class_one, NULL); | |
b3c581d5 | 1336 | dev->qdisc_tx_busylock = &team_tx_busylock_key; |
6c85f2bd JP |
1337 | } |
1338 | ||
3d249d4c JP |
1339 | static int team_init(struct net_device *dev) |
1340 | { | |
1341 | struct team *team = netdev_priv(dev); | |
1342 | int i; | |
358b8382 | 1343 | int err; |
3d249d4c JP |
1344 | |
1345 | team->dev = dev; | |
61dc3461 | 1346 | mutex_init(&team->lock); |
d299cd51 | 1347 | team_set_no_mode(team); |
3d249d4c JP |
1348 | |
1349 | team->pcpu_stats = alloc_percpu(struct team_pcpu_stats); | |
1350 | if (!team->pcpu_stats) | |
1351 | return -ENOMEM; | |
1352 | ||
1353 | for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) | |
19a0b58e | 1354 | INIT_HLIST_HEAD(&team->en_port_hlist[i]); |
3d249d4c | 1355 | INIT_LIST_HEAD(&team->port_list); |
8ff5105a JP |
1356 | err = team_queue_override_init(team); |
1357 | if (err) | |
1358 | goto err_team_queue_override_init; | |
3d249d4c JP |
1359 | |
1360 | team_adjust_ops(team); | |
1361 | ||
1362 | INIT_LIST_HEAD(&team->option_list); | |
80f7c668 | 1363 | INIT_LIST_HEAD(&team->option_inst_list); |
358b8382 JP |
1364 | err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); |
1365 | if (err) | |
1366 | goto err_options_register; | |
3d249d4c JP |
1367 | netif_carrier_off(dev); |
1368 | ||
6c85f2bd JP |
1369 | team_set_lockdep_class(dev); |
1370 | ||
3d249d4c | 1371 | return 0; |
358b8382 JP |
1372 | |
1373 | err_options_register: | |
8ff5105a JP |
1374 | team_queue_override_fini(team); |
1375 | err_team_queue_override_init: | |
358b8382 JP |
1376 | free_percpu(team->pcpu_stats); |
1377 | ||
1378 | return err; | |
3d249d4c JP |
1379 | } |
1380 | ||
1381 | static void team_uninit(struct net_device *dev) | |
1382 | { | |
1383 | struct team *team = netdev_priv(dev); | |
1384 | struct team_port *port; | |
1385 | struct team_port *tmp; | |
1386 | ||
61dc3461 | 1387 | mutex_lock(&team->lock); |
3d249d4c JP |
1388 | list_for_each_entry_safe(port, tmp, &team->port_list, list) |
1389 | team_port_del(team, port->dev); | |
1390 | ||
1391 | __team_change_mode(team, NULL); /* cleanup */ | |
1392 | __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); | |
8ff5105a | 1393 | team_queue_override_fini(team); |
61dc3461 | 1394 | mutex_unlock(&team->lock); |
3d249d4c JP |
1395 | } |
1396 | ||
1397 | static void team_destructor(struct net_device *dev) | |
1398 | { | |
1399 | struct team *team = netdev_priv(dev); | |
1400 | ||
1401 | free_percpu(team->pcpu_stats); | |
1402 | free_netdev(dev); | |
1403 | } | |
1404 | ||
1405 | static int team_open(struct net_device *dev) | |
1406 | { | |
3d249d4c JP |
1407 | return 0; |
1408 | } | |
1409 | ||
1410 | static int team_close(struct net_device *dev) | |
1411 | { | |
3d249d4c JP |
1412 | return 0; |
1413 | } | |
1414 | ||
1415 | /* | |
1416 | * note: already called with rcu_read_lock | |
1417 | */ | |
1418 | static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) | |
1419 | { | |
1420 | struct team *team = netdev_priv(dev); | |
8ff5105a | 1421 | bool tx_success; |
3d249d4c JP |
1422 | unsigned int len = skb->len; |
1423 | ||
8ff5105a JP |
1424 | tx_success = team_queue_override_transmit(team, skb); |
1425 | if (!tx_success) | |
1426 | tx_success = team->ops.transmit(team, skb); | |
3d249d4c JP |
1427 | if (tx_success) { |
1428 | struct team_pcpu_stats *pcpu_stats; | |
1429 | ||
1430 | pcpu_stats = this_cpu_ptr(team->pcpu_stats); | |
1431 | u64_stats_update_begin(&pcpu_stats->syncp); | |
1432 | pcpu_stats->tx_packets++; | |
1433 | pcpu_stats->tx_bytes += len; | |
1434 | u64_stats_update_end(&pcpu_stats->syncp); | |
1435 | } else { | |
1436 | this_cpu_inc(team->pcpu_stats->tx_dropped); | |
1437 | } | |
1438 | ||
1439 | return NETDEV_TX_OK; | |
1440 | } | |
1441 | ||
6c85f2bd JP |
1442 | static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb) |
1443 | { | |
1444 | /* | |
1445 | * This helper function exists to help dev_pick_tx get the correct | |
1446 | * destination queue. Using a helper function skips a call to | |
1447 | * skb_tx_hash and will put the skbs in the queue we expect on their | |
1448 | * way down to the team driver. | |
1449 | */ | |
1450 | u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; | |
1451 | ||
1452 | /* | |
1453 | * Save the original txq to restore before passing to the driver | |
1454 | */ | |
1455 | qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; | |
1456 | ||
1457 | if (unlikely(txq >= dev->real_num_tx_queues)) { | |
1458 | do { | |
1459 | txq -= dev->real_num_tx_queues; | |
1460 | } while (txq >= dev->real_num_tx_queues); | |
1461 | } | |
1462 | return txq; | |
1463 | } | |
1464 | ||
3d249d4c JP |
1465 | static void team_change_rx_flags(struct net_device *dev, int change) |
1466 | { | |
1467 | struct team *team = netdev_priv(dev); | |
1468 | struct team_port *port; | |
1469 | int inc; | |
1470 | ||
1471 | rcu_read_lock(); | |
1472 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1473 | if (change & IFF_PROMISC) { | |
1474 | inc = dev->flags & IFF_PROMISC ? 1 : -1; | |
1475 | dev_set_promiscuity(port->dev, inc); | |
1476 | } | |
1477 | if (change & IFF_ALLMULTI) { | |
1478 | inc = dev->flags & IFF_ALLMULTI ? 1 : -1; | |
1479 | dev_set_allmulti(port->dev, inc); | |
1480 | } | |
1481 | } | |
1482 | rcu_read_unlock(); | |
1483 | } | |
1484 | ||
1485 | static void team_set_rx_mode(struct net_device *dev) | |
1486 | { | |
1487 | struct team *team = netdev_priv(dev); | |
1488 | struct team_port *port; | |
1489 | ||
1490 | rcu_read_lock(); | |
1491 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1492 | dev_uc_sync(port->dev, dev); | |
1493 | dev_mc_sync(port->dev, dev); | |
1494 | } | |
1495 | rcu_read_unlock(); | |
1496 | } | |
1497 | ||
1498 | static int team_set_mac_address(struct net_device *dev, void *p) | |
1499 | { | |
1d76efe1 | 1500 | struct sockaddr *addr = p; |
3d249d4c JP |
1501 | struct team *team = netdev_priv(dev); |
1502 | struct team_port *port; | |
3d249d4c | 1503 | |
1d76efe1 JP |
1504 | if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data)) |
1505 | return -EADDRNOTAVAIL; | |
1506 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
3d249d4c JP |
1507 | rcu_read_lock(); |
1508 | list_for_each_entry_rcu(port, &team->port_list, list) | |
1d76efe1 JP |
1509 | if (team->ops.port_change_dev_addr) |
1510 | team->ops.port_change_dev_addr(team, port); | |
3d249d4c JP |
1511 | rcu_read_unlock(); |
1512 | return 0; | |
1513 | } | |
1514 | ||
1515 | static int team_change_mtu(struct net_device *dev, int new_mtu) | |
1516 | { | |
1517 | struct team *team = netdev_priv(dev); | |
1518 | struct team_port *port; | |
1519 | int err; | |
1520 | ||
1521 | /* | |
1522 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1523 | * to traverse list in reverse under rcu_read_lock | |
1524 | */ | |
61dc3461 | 1525 | mutex_lock(&team->lock); |
3d249d4c JP |
1526 | list_for_each_entry(port, &team->port_list, list) { |
1527 | err = dev_set_mtu(port->dev, new_mtu); | |
1528 | if (err) { | |
1529 | netdev_err(dev, "Device %s failed to change mtu", | |
1530 | port->dev->name); | |
1531 | goto unwind; | |
1532 | } | |
1533 | } | |
61dc3461 | 1534 | mutex_unlock(&team->lock); |
3d249d4c JP |
1535 | |
1536 | dev->mtu = new_mtu; | |
1537 | ||
1538 | return 0; | |
1539 | ||
1540 | unwind: | |
1541 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1542 | dev_set_mtu(port->dev, dev->mtu); | |
61dc3461 | 1543 | mutex_unlock(&team->lock); |
3d249d4c JP |
1544 | |
1545 | return err; | |
1546 | } | |
1547 | ||
1548 | static struct rtnl_link_stats64 * | |
1549 | team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
1550 | { | |
1551 | struct team *team = netdev_priv(dev); | |
1552 | struct team_pcpu_stats *p; | |
1553 | u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; | |
1554 | u32 rx_dropped = 0, tx_dropped = 0; | |
1555 | unsigned int start; | |
1556 | int i; | |
1557 | ||
1558 | for_each_possible_cpu(i) { | |
1559 | p = per_cpu_ptr(team->pcpu_stats, i); | |
1560 | do { | |
1561 | start = u64_stats_fetch_begin_bh(&p->syncp); | |
1562 | rx_packets = p->rx_packets; | |
1563 | rx_bytes = p->rx_bytes; | |
1564 | rx_multicast = p->rx_multicast; | |
1565 | tx_packets = p->tx_packets; | |
1566 | tx_bytes = p->tx_bytes; | |
1567 | } while (u64_stats_fetch_retry_bh(&p->syncp, start)); | |
1568 | ||
1569 | stats->rx_packets += rx_packets; | |
1570 | stats->rx_bytes += rx_bytes; | |
1571 | stats->multicast += rx_multicast; | |
1572 | stats->tx_packets += tx_packets; | |
1573 | stats->tx_bytes += tx_bytes; | |
1574 | /* | |
1575 | * rx_dropped & tx_dropped are u32, updated | |
1576 | * without syncp protection. | |
1577 | */ | |
1578 | rx_dropped += p->rx_dropped; | |
1579 | tx_dropped += p->tx_dropped; | |
1580 | } | |
1581 | stats->rx_dropped = rx_dropped; | |
1582 | stats->tx_dropped = tx_dropped; | |
1583 | return stats; | |
1584 | } | |
1585 | ||
8e586137 | 1586 | static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1587 | { |
1588 | struct team *team = netdev_priv(dev); | |
1589 | struct team_port *port; | |
87002b03 | 1590 | int err; |
3d249d4c | 1591 | |
87002b03 JP |
1592 | /* |
1593 | * Alhough this is reader, it's guarded by team lock. It's not possible | |
1594 | * to traverse list in reverse under rcu_read_lock | |
1595 | */ | |
1596 | mutex_lock(&team->lock); | |
1597 | list_for_each_entry(port, &team->port_list, list) { | |
1598 | err = vlan_vid_add(port->dev, vid); | |
1599 | if (err) | |
1600 | goto unwind; | |
3d249d4c | 1601 | } |
87002b03 | 1602 | mutex_unlock(&team->lock); |
8e586137 JP |
1603 | |
1604 | return 0; | |
87002b03 JP |
1605 | |
1606 | unwind: | |
1607 | list_for_each_entry_continue_reverse(port, &team->port_list, list) | |
1608 | vlan_vid_del(port->dev, vid); | |
1609 | mutex_unlock(&team->lock); | |
1610 | ||
1611 | return err; | |
3d249d4c JP |
1612 | } |
1613 | ||
8e586137 | 1614 | static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) |
3d249d4c JP |
1615 | { |
1616 | struct team *team = netdev_priv(dev); | |
1617 | struct team_port *port; | |
1618 | ||
1619 | rcu_read_lock(); | |
87002b03 JP |
1620 | list_for_each_entry_rcu(port, &team->port_list, list) |
1621 | vlan_vid_del(port->dev, vid); | |
3d249d4c | 1622 | rcu_read_unlock(); |
8e586137 JP |
1623 | |
1624 | return 0; | |
3d249d4c JP |
1625 | } |
1626 | ||
bd2d0837 JP |
1627 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1628 | static void team_poll_controller(struct net_device *dev) | |
1629 | { | |
1630 | } | |
1631 | ||
1632 | static void __team_netpoll_cleanup(struct team *team) | |
1633 | { | |
1634 | struct team_port *port; | |
1635 | ||
1636 | list_for_each_entry(port, &team->port_list, list) | |
1637 | team_port_disable_netpoll(port); | |
1638 | } | |
1639 | ||
1640 | static void team_netpoll_cleanup(struct net_device *dev) | |
1641 | { | |
1642 | struct team *team = netdev_priv(dev); | |
1643 | ||
1644 | mutex_lock(&team->lock); | |
1645 | __team_netpoll_cleanup(team); | |
1646 | mutex_unlock(&team->lock); | |
1647 | } | |
1648 | ||
1649 | static int team_netpoll_setup(struct net_device *dev, | |
47be03a2 | 1650 | struct netpoll_info *npifo, gfp_t gfp) |
bd2d0837 JP |
1651 | { |
1652 | struct team *team = netdev_priv(dev); | |
1653 | struct team_port *port; | |
3324d024 | 1654 | int err = 0; |
bd2d0837 JP |
1655 | |
1656 | mutex_lock(&team->lock); | |
1657 | list_for_each_entry(port, &team->port_list, list) { | |
47be03a2 | 1658 | err = team_port_enable_netpoll(team, port, gfp); |
bd2d0837 JP |
1659 | if (err) { |
1660 | __team_netpoll_cleanup(team); | |
1661 | break; | |
1662 | } | |
1663 | } | |
1664 | mutex_unlock(&team->lock); | |
1665 | return err; | |
1666 | } | |
1667 | #endif | |
1668 | ||
3d249d4c JP |
1669 | static int team_add_slave(struct net_device *dev, struct net_device *port_dev) |
1670 | { | |
1671 | struct team *team = netdev_priv(dev); | |
1672 | int err; | |
1673 | ||
61dc3461 | 1674 | mutex_lock(&team->lock); |
3d249d4c | 1675 | err = team_port_add(team, port_dev); |
61dc3461 | 1676 | mutex_unlock(&team->lock); |
3d249d4c JP |
1677 | return err; |
1678 | } | |
1679 | ||
1680 | static int team_del_slave(struct net_device *dev, struct net_device *port_dev) | |
1681 | { | |
1682 | struct team *team = netdev_priv(dev); | |
1683 | int err; | |
1684 | ||
61dc3461 | 1685 | mutex_lock(&team->lock); |
3d249d4c | 1686 | err = team_port_del(team, port_dev); |
61dc3461 | 1687 | mutex_unlock(&team->lock); |
3d249d4c JP |
1688 | return err; |
1689 | } | |
1690 | ||
234a8fd4 JP |
1691 | static netdev_features_t team_fix_features(struct net_device *dev, |
1692 | netdev_features_t features) | |
1693 | { | |
1694 | struct team_port *port; | |
1695 | struct team *team = netdev_priv(dev); | |
1696 | netdev_features_t mask; | |
1697 | ||
1698 | mask = features; | |
1699 | features &= ~NETIF_F_ONE_FOR_ALL; | |
1700 | features |= NETIF_F_ALL_FOR_ALL; | |
1701 | ||
1702 | rcu_read_lock(); | |
1703 | list_for_each_entry_rcu(port, &team->port_list, list) { | |
1704 | features = netdev_increment_features(features, | |
1705 | port->dev->features, | |
1706 | mask); | |
1707 | } | |
1708 | rcu_read_unlock(); | |
1709 | return features; | |
1710 | } | |
1711 | ||
4cafe373 FL |
1712 | static int team_change_carrier(struct net_device *dev, bool new_carrier) |
1713 | { | |
e185483e FL |
1714 | struct team *team = netdev_priv(dev); |
1715 | ||
1716 | team->user_carrier_enabled = true; | |
1717 | ||
4cafe373 FL |
1718 | if (new_carrier) |
1719 | netif_carrier_on(dev); | |
1720 | else | |
1721 | netif_carrier_off(dev); | |
1722 | return 0; | |
1723 | } | |
1724 | ||
3d249d4c JP |
1725 | static const struct net_device_ops team_netdev_ops = { |
1726 | .ndo_init = team_init, | |
1727 | .ndo_uninit = team_uninit, | |
1728 | .ndo_open = team_open, | |
1729 | .ndo_stop = team_close, | |
1730 | .ndo_start_xmit = team_xmit, | |
6c85f2bd | 1731 | .ndo_select_queue = team_select_queue, |
3d249d4c JP |
1732 | .ndo_change_rx_flags = team_change_rx_flags, |
1733 | .ndo_set_rx_mode = team_set_rx_mode, | |
1734 | .ndo_set_mac_address = team_set_mac_address, | |
1735 | .ndo_change_mtu = team_change_mtu, | |
1736 | .ndo_get_stats64 = team_get_stats64, | |
1737 | .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, | |
1738 | .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, | |
bd2d0837 JP |
1739 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1740 | .ndo_poll_controller = team_poll_controller, | |
1741 | .ndo_netpoll_setup = team_netpoll_setup, | |
1742 | .ndo_netpoll_cleanup = team_netpoll_cleanup, | |
1743 | #endif | |
3d249d4c JP |
1744 | .ndo_add_slave = team_add_slave, |
1745 | .ndo_del_slave = team_del_slave, | |
234a8fd4 | 1746 | .ndo_fix_features = team_fix_features, |
4cafe373 | 1747 | .ndo_change_carrier = team_change_carrier, |
3d249d4c JP |
1748 | }; |
1749 | ||
7f51c587 FL |
1750 | /*********************** |
1751 | * ethtool interface | |
1752 | ***********************/ | |
1753 | ||
1754 | static void team_ethtool_get_drvinfo(struct net_device *dev, | |
1755 | struct ethtool_drvinfo *drvinfo) | |
1756 | { | |
3066af58 FL |
1757 | strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); |
1758 | strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); | |
7f51c587 FL |
1759 | } |
1760 | ||
1761 | static const struct ethtool_ops team_ethtool_ops = { | |
1762 | .get_drvinfo = team_ethtool_get_drvinfo, | |
1763 | .get_link = ethtool_op_get_link, | |
1764 | }; | |
3d249d4c JP |
1765 | |
1766 | /*********************** | |
1767 | * rt netlink interface | |
1768 | ***********************/ | |
1769 | ||
1d76efe1 JP |
1770 | static void team_setup_by_port(struct net_device *dev, |
1771 | struct net_device *port_dev) | |
1772 | { | |
1773 | dev->header_ops = port_dev->header_ops; | |
1774 | dev->type = port_dev->type; | |
1775 | dev->hard_header_len = port_dev->hard_header_len; | |
1776 | dev->addr_len = port_dev->addr_len; | |
1777 | dev->mtu = port_dev->mtu; | |
1778 | memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len); | |
1779 | memcpy(dev->dev_addr, port_dev->dev_addr, port_dev->addr_len); | |
1d76efe1 JP |
1780 | } |
1781 | ||
1782 | static int team_dev_type_check_change(struct net_device *dev, | |
1783 | struct net_device *port_dev) | |
1784 | { | |
1785 | struct team *team = netdev_priv(dev); | |
1786 | char *portname = port_dev->name; | |
1787 | int err; | |
1788 | ||
1789 | if (dev->type == port_dev->type) | |
1790 | return 0; | |
1791 | if (!list_empty(&team->port_list)) { | |
1792 | netdev_err(dev, "Device %s is of different type\n", portname); | |
1793 | return -EBUSY; | |
1794 | } | |
1795 | err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev); | |
1796 | err = notifier_to_errno(err); | |
1797 | if (err) { | |
1798 | netdev_err(dev, "Refused to change device type\n"); | |
1799 | return err; | |
1800 | } | |
1801 | dev_uc_flush(dev); | |
1802 | dev_mc_flush(dev); | |
1803 | team_setup_by_port(dev, port_dev); | |
1804 | call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev); | |
1805 | return 0; | |
1806 | } | |
1807 | ||
3d249d4c JP |
1808 | static void team_setup(struct net_device *dev) |
1809 | { | |
1810 | ether_setup(dev); | |
1811 | ||
1812 | dev->netdev_ops = &team_netdev_ops; | |
7f51c587 | 1813 | dev->ethtool_ops = &team_ethtool_ops; |
3d249d4c JP |
1814 | dev->destructor = team_destructor; |
1815 | dev->tx_queue_len = 0; | |
1816 | dev->flags |= IFF_MULTICAST; | |
1817 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); | |
1818 | ||
1819 | /* | |
1820 | * Indicate we support unicast address filtering. That way core won't | |
1821 | * bring us to promisc mode in case a unicast addr is added. | |
1822 | * Let this up to underlay drivers. | |
1823 | */ | |
5a1d1c8c | 1824 | dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE; |
3d249d4c JP |
1825 | |
1826 | dev->features |= NETIF_F_LLTX; | |
1827 | dev->features |= NETIF_F_GRO; | |
3ed71471 JP |
1828 | dev->hw_features = TEAM_VLAN_FEATURES | |
1829 | NETIF_F_HW_VLAN_TX | | |
3d249d4c JP |
1830 | NETIF_F_HW_VLAN_RX | |
1831 | NETIF_F_HW_VLAN_FILTER; | |
1832 | ||
3ed71471 | 1833 | dev->hw_features &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_HW_CSUM); |
3d249d4c JP |
1834 | dev->features |= dev->hw_features; |
1835 | } | |
1836 | ||
1837 | static int team_newlink(struct net *src_net, struct net_device *dev, | |
1838 | struct nlattr *tb[], struct nlattr *data[]) | |
1839 | { | |
1840 | int err; | |
1841 | ||
1842 | if (tb[IFLA_ADDRESS] == NULL) | |
7ce5d222 | 1843 | eth_hw_addr_random(dev); |
3d249d4c JP |
1844 | |
1845 | err = register_netdevice(dev); | |
1846 | if (err) | |
1847 | return err; | |
1848 | ||
1849 | return 0; | |
1850 | } | |
1851 | ||
1852 | static int team_validate(struct nlattr *tb[], struct nlattr *data[]) | |
1853 | { | |
1854 | if (tb[IFLA_ADDRESS]) { | |
1855 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
1856 | return -EINVAL; | |
1857 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
1858 | return -EADDRNOTAVAIL; | |
1859 | } | |
1860 | return 0; | |
1861 | } | |
1862 | ||
6c85f2bd JP |
1863 | static unsigned int team_get_num_tx_queues(void) |
1864 | { | |
1865 | return TEAM_DEFAULT_NUM_TX_QUEUES; | |
1866 | } | |
1867 | ||
1868 | static unsigned int team_get_num_rx_queues(void) | |
1869 | { | |
1870 | return TEAM_DEFAULT_NUM_RX_QUEUES; | |
1871 | } | |
1872 | ||
3d249d4c | 1873 | static struct rtnl_link_ops team_link_ops __read_mostly = { |
6c85f2bd JP |
1874 | .kind = DRV_NAME, |
1875 | .priv_size = sizeof(struct team), | |
1876 | .setup = team_setup, | |
1877 | .newlink = team_newlink, | |
1878 | .validate = team_validate, | |
1879 | .get_num_tx_queues = team_get_num_tx_queues, | |
1880 | .get_num_rx_queues = team_get_num_rx_queues, | |
3d249d4c JP |
1881 | }; |
1882 | ||
1883 | ||
1884 | /*********************************** | |
1885 | * Generic netlink custom interface | |
1886 | ***********************************/ | |
1887 | ||
1888 | static struct genl_family team_nl_family = { | |
1889 | .id = GENL_ID_GENERATE, | |
1890 | .name = TEAM_GENL_NAME, | |
1891 | .version = TEAM_GENL_VERSION, | |
1892 | .maxattr = TEAM_ATTR_MAX, | |
1893 | .netnsok = true, | |
1894 | }; | |
1895 | ||
1896 | static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { | |
1897 | [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1898 | [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, | |
1899 | [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, | |
1900 | [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, | |
1901 | }; | |
1902 | ||
1903 | static const struct nla_policy | |
1904 | team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { | |
1905 | [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, | |
1906 | [TEAM_ATTR_OPTION_NAME] = { | |
1907 | .type = NLA_STRING, | |
1908 | .len = TEAM_STRING_MAX_LEN, | |
1909 | }, | |
1910 | [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, | |
1911 | [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, | |
2615598f | 1912 | [TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, |
3d249d4c JP |
1913 | }; |
1914 | ||
1915 | static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) | |
1916 | { | |
1917 | struct sk_buff *msg; | |
1918 | void *hdr; | |
1919 | int err; | |
1920 | ||
58050fce | 1921 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
3d249d4c JP |
1922 | if (!msg) |
1923 | return -ENOMEM; | |
1924 | ||
15e47304 | 1925 | hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, |
3d249d4c | 1926 | &team_nl_family, 0, TEAM_CMD_NOOP); |
a326e6dd WY |
1927 | if (!hdr) { |
1928 | err = -EMSGSIZE; | |
3d249d4c JP |
1929 | goto err_msg_put; |
1930 | } | |
1931 | ||
1932 | genlmsg_end(msg, hdr); | |
1933 | ||
15e47304 | 1934 | return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid); |
3d249d4c JP |
1935 | |
1936 | err_msg_put: | |
1937 | nlmsg_free(msg); | |
1938 | ||
1939 | return err; | |
1940 | } | |
1941 | ||
1942 | /* | |
1943 | * Netlink cmd functions should be locked by following two functions. | |
8c0713a5 | 1944 | * Since dev gets held here, that ensures dev won't disappear in between. |
3d249d4c JP |
1945 | */ |
1946 | static struct team *team_nl_team_get(struct genl_info *info) | |
1947 | { | |
1948 | struct net *net = genl_info_net(info); | |
1949 | int ifindex; | |
1950 | struct net_device *dev; | |
1951 | struct team *team; | |
1952 | ||
1953 | if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) | |
1954 | return NULL; | |
1955 | ||
1956 | ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); | |
8c0713a5 | 1957 | dev = dev_get_by_index(net, ifindex); |
3d249d4c | 1958 | if (!dev || dev->netdev_ops != &team_netdev_ops) { |
8c0713a5 JP |
1959 | if (dev) |
1960 | dev_put(dev); | |
3d249d4c JP |
1961 | return NULL; |
1962 | } | |
1963 | ||
1964 | team = netdev_priv(dev); | |
61dc3461 | 1965 | mutex_lock(&team->lock); |
3d249d4c JP |
1966 | return team; |
1967 | } | |
1968 | ||
1969 | static void team_nl_team_put(struct team *team) | |
1970 | { | |
61dc3461 | 1971 | mutex_unlock(&team->lock); |
8c0713a5 | 1972 | dev_put(team->dev); |
3d249d4c JP |
1973 | } |
1974 | ||
9b00cf2d | 1975 | typedef int team_nl_send_func_t(struct sk_buff *skb, |
15e47304 | 1976 | struct team *team, u32 portid); |
9b00cf2d | 1977 | |
15e47304 | 1978 | static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid) |
9b00cf2d | 1979 | { |
15e47304 | 1980 | return genlmsg_unicast(dev_net(team->dev), skb, portid); |
9b00cf2d JP |
1981 | } |
1982 | ||
01048d9a JP |
1983 | static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team, |
1984 | struct team_option_inst *opt_inst) | |
1985 | { | |
1986 | struct nlattr *option_item; | |
1987 | struct team_option *option = opt_inst->option; | |
9b00cf2d | 1988 | struct team_option_inst_info *opt_inst_info = &opt_inst->info; |
01048d9a JP |
1989 | struct team_gsetter_ctx ctx; |
1990 | int err; | |
1991 | ||
9b00cf2d JP |
1992 | ctx.info = opt_inst_info; |
1993 | err = team_option_get(team, opt_inst, &ctx); | |
1994 | if (err) | |
1995 | return err; | |
1996 | ||
01048d9a JP |
1997 | option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION); |
1998 | if (!option_item) | |
9b00cf2d | 1999 | return -EMSGSIZE; |
01048d9a | 2000 | |
9b00cf2d JP |
2001 | if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) |
2002 | goto nest_cancel; | |
01048d9a JP |
2003 | if (opt_inst_info->port && |
2004 | nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, | |
2005 | opt_inst_info->port->dev->ifindex)) | |
9b00cf2d | 2006 | goto nest_cancel; |
01048d9a JP |
2007 | if (opt_inst->option->array_size && |
2008 | nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX, | |
2009 | opt_inst_info->array_index)) | |
9b00cf2d | 2010 | goto nest_cancel; |
01048d9a JP |
2011 | |
2012 | switch (option->type) { | |
2013 | case TEAM_OPTION_TYPE_U32: | |
2014 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) | |
9b00cf2d | 2015 | goto nest_cancel; |
01048d9a | 2016 | if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val)) |
9b00cf2d | 2017 | goto nest_cancel; |
01048d9a JP |
2018 | break; |
2019 | case TEAM_OPTION_TYPE_STRING: | |
2020 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) | |
9b00cf2d | 2021 | goto nest_cancel; |
01048d9a JP |
2022 | if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, |
2023 | ctx.data.str_val)) | |
9b00cf2d | 2024 | goto nest_cancel; |
01048d9a JP |
2025 | break; |
2026 | case TEAM_OPTION_TYPE_BINARY: | |
2027 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) | |
9b00cf2d | 2028 | goto nest_cancel; |
01048d9a JP |
2029 | if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len, |
2030 | ctx.data.bin_val.ptr)) | |
9b00cf2d | 2031 | goto nest_cancel; |
01048d9a JP |
2032 | break; |
2033 | case TEAM_OPTION_TYPE_BOOL: | |
2034 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) | |
9b00cf2d | 2035 | goto nest_cancel; |
01048d9a JP |
2036 | if (ctx.data.bool_val && |
2037 | nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) | |
9b00cf2d | 2038 | goto nest_cancel; |
01048d9a | 2039 | break; |
69821638 JP |
2040 | case TEAM_OPTION_TYPE_S32: |
2041 | if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32)) | |
2042 | goto nest_cancel; | |
2043 | if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val)) | |
2044 | goto nest_cancel; | |
2045 | break; | |
01048d9a JP |
2046 | default: |
2047 | BUG(); | |
2048 | } | |
9b00cf2d JP |
2049 | if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) |
2050 | goto nest_cancel; | |
2051 | if (opt_inst->changed) { | |
2052 | if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) | |
2053 | goto nest_cancel; | |
2054 | opt_inst->changed = false; | |
2055 | } | |
01048d9a JP |
2056 | nla_nest_end(skb, option_item); |
2057 | return 0; | |
2058 | ||
9b00cf2d JP |
2059 | nest_cancel: |
2060 | nla_nest_cancel(skb, option_item); | |
2061 | return -EMSGSIZE; | |
2062 | } | |
2063 | ||
2064 | static int __send_and_alloc_skb(struct sk_buff **pskb, | |
15e47304 | 2065 | struct team *team, u32 portid, |
9b00cf2d JP |
2066 | team_nl_send_func_t *send_func) |
2067 | { | |
2068 | int err; | |
2069 | ||
2070 | if (*pskb) { | |
15e47304 | 2071 | err = send_func(*pskb, team, portid); |
9b00cf2d JP |
2072 | if (err) |
2073 | return err; | |
2074 | } | |
58050fce | 2075 | *pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); |
9b00cf2d JP |
2076 | if (!*pskb) |
2077 | return -ENOMEM; | |
2078 | return 0; | |
01048d9a JP |
2079 | } |
2080 | ||
15e47304 | 2081 | static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, |
9b00cf2d | 2082 | int flags, team_nl_send_func_t *send_func, |
01048d9a | 2083 | struct list_head *sel_opt_inst_list) |
3d249d4c JP |
2084 | { |
2085 | struct nlattr *option_list; | |
9b00cf2d | 2086 | struct nlmsghdr *nlh; |
3d249d4c | 2087 | void *hdr; |
80f7c668 JP |
2088 | struct team_option_inst *opt_inst; |
2089 | int err; | |
9b00cf2d JP |
2090 | struct sk_buff *skb = NULL; |
2091 | bool incomplete; | |
2092 | int i; | |
3d249d4c | 2093 | |
9b00cf2d JP |
2094 | opt_inst = list_first_entry(sel_opt_inst_list, |
2095 | struct team_option_inst, tmp_list); | |
2096 | ||
2097 | start_again: | |
15e47304 | 2098 | err = __send_and_alloc_skb(&skb, team, portid, send_func); |
9b00cf2d JP |
2099 | if (err) |
2100 | return err; | |
2101 | ||
15e47304 | 2102 | hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, |
3d249d4c | 2103 | TEAM_CMD_OPTIONS_GET); |
a326e6dd WY |
2104 | if (!hdr) |
2105 | return -EMSGSIZE; | |
3d249d4c | 2106 | |
86ebb02d DM |
2107 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
2108 | goto nla_put_failure; | |
3d249d4c JP |
2109 | option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION); |
2110 | if (!option_list) | |
75db986a | 2111 | goto nla_put_failure; |
3d249d4c | 2112 | |
9b00cf2d JP |
2113 | i = 0; |
2114 | incomplete = false; | |
2115 | list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { | |
01048d9a | 2116 | err = team_nl_fill_one_option_get(skb, team, opt_inst); |
9b00cf2d JP |
2117 | if (err) { |
2118 | if (err == -EMSGSIZE) { | |
2119 | if (!i) | |
2120 | goto errout; | |
2121 | incomplete = true; | |
2122 | break; | |
2123 | } | |
01048d9a | 2124 | goto errout; |
9b00cf2d JP |
2125 | } |
2126 | i++; | |
3d249d4c JP |
2127 | } |
2128 | ||
2129 | nla_nest_end(skb, option_list); | |
9b00cf2d JP |
2130 | genlmsg_end(skb, hdr); |
2131 | if (incomplete) | |
2132 | goto start_again; | |
2133 | ||
2134 | send_done: | |
15e47304 | 2135 | nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); |
9b00cf2d | 2136 | if (!nlh) { |
15e47304 | 2137 | err = __send_and_alloc_skb(&skb, team, portid, send_func); |
9b00cf2d JP |
2138 | if (err) |
2139 | goto errout; | |
2140 | goto send_done; | |
2141 | } | |
2142 | ||
15e47304 | 2143 | return send_func(skb, team, portid); |
3d249d4c JP |
2144 | |
2145 | nla_put_failure: | |
80f7c668 JP |
2146 | err = -EMSGSIZE; |
2147 | errout: | |
3d249d4c | 2148 | genlmsg_cancel(skb, hdr); |
9b00cf2d | 2149 | nlmsg_free(skb); |
80f7c668 | 2150 | return err; |
3d249d4c JP |
2151 | } |
2152 | ||
3d249d4c JP |
2153 | static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) |
2154 | { | |
2155 | struct team *team; | |
9b00cf2d | 2156 | struct team_option_inst *opt_inst; |
3d249d4c | 2157 | int err; |
9b00cf2d | 2158 | LIST_HEAD(sel_opt_inst_list); |
3d249d4c JP |
2159 | |
2160 | team = team_nl_team_get(info); | |
2161 | if (!team) | |
2162 | return -EINVAL; | |
2163 | ||
9b00cf2d JP |
2164 | list_for_each_entry(opt_inst, &team->option_inst_list, list) |
2165 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
15e47304 | 2166 | err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq, |
9b00cf2d JP |
2167 | NLM_F_ACK, team_nl_send_unicast, |
2168 | &sel_opt_inst_list); | |
3d249d4c JP |
2169 | |
2170 | team_nl_team_put(team); | |
2171 | ||
2172 | return err; | |
2173 | } | |
2174 | ||
2fcdb2c9 JP |
2175 | static int team_nl_send_event_options_get(struct team *team, |
2176 | struct list_head *sel_opt_inst_list); | |
2177 | ||
3d249d4c JP |
2178 | static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) |
2179 | { | |
2180 | struct team *team; | |
2181 | int err = 0; | |
2182 | int i; | |
2183 | struct nlattr *nl_option; | |
2fcdb2c9 | 2184 | LIST_HEAD(opt_inst_list); |
3d249d4c JP |
2185 | |
2186 | team = team_nl_team_get(info); | |
2187 | if (!team) | |
2188 | return -EINVAL; | |
2189 | ||
2190 | err = -EINVAL; | |
2191 | if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { | |
2192 | err = -EINVAL; | |
2193 | goto team_put; | |
2194 | } | |
2195 | ||
2196 | nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { | |
80f7c668 | 2197 | struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; |
b1303326 | 2198 | struct nlattr *attr; |
14f066ba | 2199 | struct nlattr *attr_data; |
3d249d4c | 2200 | enum team_option_type opt_type; |
80f7c668 | 2201 | int opt_port_ifindex = 0; /* != 0 for per-port options */ |
b1303326 JP |
2202 | u32 opt_array_index = 0; |
2203 | bool opt_is_array = false; | |
80f7c668 | 2204 | struct team_option_inst *opt_inst; |
3d249d4c JP |
2205 | char *opt_name; |
2206 | bool opt_found = false; | |
2207 | ||
2208 | if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { | |
2209 | err = -EINVAL; | |
2210 | goto team_put; | |
2211 | } | |
80f7c668 | 2212 | err = nla_parse_nested(opt_attrs, TEAM_ATTR_OPTION_MAX, |
3d249d4c JP |
2213 | nl_option, team_nl_option_policy); |
2214 | if (err) | |
2215 | goto team_put; | |
80f7c668 | 2216 | if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || |
14f066ba | 2217 | !opt_attrs[TEAM_ATTR_OPTION_TYPE]) { |
3d249d4c JP |
2218 | err = -EINVAL; |
2219 | goto team_put; | |
2220 | } | |
80f7c668 | 2221 | switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { |
3d249d4c JP |
2222 | case NLA_U32: |
2223 | opt_type = TEAM_OPTION_TYPE_U32; | |
2224 | break; | |
2225 | case NLA_STRING: | |
2226 | opt_type = TEAM_OPTION_TYPE_STRING; | |
2227 | break; | |
2615598f JP |
2228 | case NLA_BINARY: |
2229 | opt_type = TEAM_OPTION_TYPE_BINARY; | |
2230 | break; | |
14f066ba JP |
2231 | case NLA_FLAG: |
2232 | opt_type = TEAM_OPTION_TYPE_BOOL; | |
2233 | break; | |
69821638 JP |
2234 | case NLA_S32: |
2235 | opt_type = TEAM_OPTION_TYPE_S32; | |
2236 | break; | |
3d249d4c JP |
2237 | default: |
2238 | goto team_put; | |
2239 | } | |
2240 | ||
14f066ba JP |
2241 | attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; |
2242 | if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { | |
2243 | err = -EINVAL; | |
2244 | goto team_put; | |
2245 | } | |
2246 | ||
80f7c668 | 2247 | opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); |
b1303326 JP |
2248 | attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; |
2249 | if (attr) | |
2250 | opt_port_ifindex = nla_get_u32(attr); | |
2251 | ||
2252 | attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX]; | |
2253 | if (attr) { | |
2254 | opt_is_array = true; | |
2255 | opt_array_index = nla_get_u32(attr); | |
2256 | } | |
80f7c668 JP |
2257 | |
2258 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { | |
2259 | struct team_option *option = opt_inst->option; | |
80f7c668 | 2260 | struct team_gsetter_ctx ctx; |
85d59a87 | 2261 | struct team_option_inst_info *opt_inst_info; |
80f7c668 | 2262 | int tmp_ifindex; |
3d249d4c | 2263 | |
85d59a87 JP |
2264 | opt_inst_info = &opt_inst->info; |
2265 | tmp_ifindex = opt_inst_info->port ? | |
2266 | opt_inst_info->port->dev->ifindex : 0; | |
3d249d4c | 2267 | if (option->type != opt_type || |
80f7c668 | 2268 | strcmp(option->name, opt_name) || |
b1303326 JP |
2269 | tmp_ifindex != opt_port_ifindex || |
2270 | (option->array_size && !opt_is_array) || | |
85d59a87 | 2271 | opt_inst_info->array_index != opt_array_index) |
3d249d4c JP |
2272 | continue; |
2273 | opt_found = true; | |
85d59a87 | 2274 | ctx.info = opt_inst_info; |
3d249d4c JP |
2275 | switch (opt_type) { |
2276 | case TEAM_OPTION_TYPE_U32: | |
14f066ba | 2277 | ctx.data.u32_val = nla_get_u32(attr_data); |
3d249d4c JP |
2278 | break; |
2279 | case TEAM_OPTION_TYPE_STRING: | |
14f066ba | 2280 | if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { |
2615598f JP |
2281 | err = -EINVAL; |
2282 | goto team_put; | |
2283 | } | |
14f066ba | 2284 | ctx.data.str_val = nla_data(attr_data); |
3d249d4c | 2285 | break; |
2615598f | 2286 | case TEAM_OPTION_TYPE_BINARY: |
14f066ba JP |
2287 | ctx.data.bin_val.len = nla_len(attr_data); |
2288 | ctx.data.bin_val.ptr = nla_data(attr_data); | |
2289 | break; | |
2290 | case TEAM_OPTION_TYPE_BOOL: | |
2291 | ctx.data.bool_val = attr_data ? true : false; | |
2615598f | 2292 | break; |
69821638 JP |
2293 | case TEAM_OPTION_TYPE_S32: |
2294 | ctx.data.s32_val = nla_get_s32(attr_data); | |
2295 | break; | |
3d249d4c JP |
2296 | default: |
2297 | BUG(); | |
2298 | } | |
80f7c668 | 2299 | err = team_option_set(team, opt_inst, &ctx); |
3d249d4c JP |
2300 | if (err) |
2301 | goto team_put; | |
2fcdb2c9 JP |
2302 | opt_inst->changed = true; |
2303 | list_add(&opt_inst->tmp_list, &opt_inst_list); | |
3d249d4c JP |
2304 | } |
2305 | if (!opt_found) { | |
2306 | err = -ENOENT; | |
2307 | goto team_put; | |
2308 | } | |
2309 | } | |
2310 | ||
2fcdb2c9 JP |
2311 | err = team_nl_send_event_options_get(team, &opt_inst_list); |
2312 | ||
3d249d4c JP |
2313 | team_put: |
2314 | team_nl_team_put(team); | |
2315 | ||
2316 | return err; | |
2317 | } | |
2318 | ||
d90f889e JP |
2319 | static int team_nl_fill_one_port_get(struct sk_buff *skb, |
2320 | struct team_port *port) | |
2321 | { | |
2322 | struct nlattr *port_item; | |
2323 | ||
2324 | port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); | |
2325 | if (!port_item) | |
2326 | goto nest_cancel; | |
2327 | if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) | |
2328 | goto nest_cancel; | |
2329 | if (port->changed) { | |
2330 | if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) | |
2331 | goto nest_cancel; | |
2332 | port->changed = false; | |
2333 | } | |
2334 | if ((port->removed && | |
2335 | nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || | |
2336 | (port->state.linkup && | |
2337 | nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || | |
2338 | nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || | |
2339 | nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) | |
2340 | goto nest_cancel; | |
2341 | nla_nest_end(skb, port_item); | |
2342 | return 0; | |
2343 | ||
2344 | nest_cancel: | |
2345 | nla_nest_cancel(skb, port_item); | |
2346 | return -EMSGSIZE; | |
2347 | } | |
2348 | ||
2349 | static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, | |
2350 | int flags, team_nl_send_func_t *send_func, | |
2351 | struct team_port *one_port) | |
3d249d4c JP |
2352 | { |
2353 | struct nlattr *port_list; | |
d90f889e | 2354 | struct nlmsghdr *nlh; |
3d249d4c JP |
2355 | void *hdr; |
2356 | struct team_port *port; | |
d90f889e JP |
2357 | int err; |
2358 | struct sk_buff *skb = NULL; | |
2359 | bool incomplete; | |
2360 | int i; | |
3d249d4c | 2361 | |
d90f889e JP |
2362 | port = list_first_entry(&team->port_list, struct team_port, list); |
2363 | ||
2364 | start_again: | |
2365 | err = __send_and_alloc_skb(&skb, team, portid, send_func); | |
2366 | if (err) | |
2367 | return err; | |
2368 | ||
2369 | hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, | |
3d249d4c | 2370 | TEAM_CMD_PORT_LIST_GET); |
a326e6dd WY |
2371 | if (!hdr) |
2372 | return -EMSGSIZE; | |
3d249d4c | 2373 | |
86ebb02d DM |
2374 | if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
2375 | goto nla_put_failure; | |
3d249d4c JP |
2376 | port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT); |
2377 | if (!port_list) | |
3221c646 | 2378 | goto nla_put_failure; |
3d249d4c | 2379 | |
d90f889e JP |
2380 | i = 0; |
2381 | incomplete = false; | |
3d249d4c | 2382 | |
d90f889e JP |
2383 | /* If one port is selected, called wants to send port list containing |
2384 | * only this port. Otherwise go through all listed ports and send all | |
2385 | */ | |
2386 | if (one_port) { | |
2387 | err = team_nl_fill_one_port_get(skb, one_port); | |
2388 | if (err) | |
2389 | goto errout; | |
2390 | } else { | |
2391 | list_for_each_entry(port, &team->port_list, list) { | |
2392 | err = team_nl_fill_one_port_get(skb, port); | |
2393 | if (err) { | |
2394 | if (err == -EMSGSIZE) { | |
2395 | if (!i) | |
2396 | goto errout; | |
2397 | incomplete = true; | |
2398 | break; | |
2399 | } | |
2400 | goto errout; | |
2401 | } | |
2402 | i++; | |
b82b9183 | 2403 | } |
3d249d4c JP |
2404 | } |
2405 | ||
2406 | nla_nest_end(skb, port_list); | |
d90f889e JP |
2407 | genlmsg_end(skb, hdr); |
2408 | if (incomplete) | |
2409 | goto start_again; | |
2410 | ||
2411 | send_done: | |
2412 | nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); | |
2413 | if (!nlh) { | |
2414 | err = __send_and_alloc_skb(&skb, team, portid, send_func); | |
2415 | if (err) | |
2416 | goto errout; | |
2417 | goto send_done; | |
2418 | } | |
2419 | ||
2420 | return send_func(skb, team, portid); | |
3d249d4c JP |
2421 | |
2422 | nla_put_failure: | |
d90f889e JP |
2423 | err = -EMSGSIZE; |
2424 | errout: | |
3d249d4c | 2425 | genlmsg_cancel(skb, hdr); |
d90f889e JP |
2426 | nlmsg_free(skb); |
2427 | return err; | |
3d249d4c JP |
2428 | } |
2429 | ||
2430 | static int team_nl_cmd_port_list_get(struct sk_buff *skb, | |
2431 | struct genl_info *info) | |
2432 | { | |
2433 | struct team *team; | |
2434 | int err; | |
2435 | ||
2436 | team = team_nl_team_get(info); | |
2437 | if (!team) | |
2438 | return -EINVAL; | |
2439 | ||
d90f889e JP |
2440 | err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq, |
2441 | NLM_F_ACK, team_nl_send_unicast, NULL); | |
3d249d4c JP |
2442 | |
2443 | team_nl_team_put(team); | |
2444 | ||
2445 | return err; | |
2446 | } | |
2447 | ||
2448 | static struct genl_ops team_nl_ops[] = { | |
2449 | { | |
2450 | .cmd = TEAM_CMD_NOOP, | |
2451 | .doit = team_nl_cmd_noop, | |
2452 | .policy = team_nl_policy, | |
2453 | }, | |
2454 | { | |
2455 | .cmd = TEAM_CMD_OPTIONS_SET, | |
2456 | .doit = team_nl_cmd_options_set, | |
2457 | .policy = team_nl_policy, | |
2458 | .flags = GENL_ADMIN_PERM, | |
2459 | }, | |
2460 | { | |
2461 | .cmd = TEAM_CMD_OPTIONS_GET, | |
2462 | .doit = team_nl_cmd_options_get, | |
2463 | .policy = team_nl_policy, | |
2464 | .flags = GENL_ADMIN_PERM, | |
2465 | }, | |
2466 | { | |
2467 | .cmd = TEAM_CMD_PORT_LIST_GET, | |
2468 | .doit = team_nl_cmd_port_list_get, | |
2469 | .policy = team_nl_policy, | |
2470 | .flags = GENL_ADMIN_PERM, | |
2471 | }, | |
2472 | }; | |
2473 | ||
2474 | static struct genl_multicast_group team_change_event_mcgrp = { | |
2475 | .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, | |
2476 | }; | |
2477 | ||
9b00cf2d | 2478 | static int team_nl_send_multicast(struct sk_buff *skb, |
15e47304 | 2479 | struct team *team, u32 portid) |
9b00cf2d JP |
2480 | { |
2481 | return genlmsg_multicast_netns(dev_net(team->dev), skb, 0, | |
2482 | team_change_event_mcgrp.id, GFP_KERNEL); | |
2483 | } | |
2484 | ||
01048d9a JP |
2485 | static int team_nl_send_event_options_get(struct team *team, |
2486 | struct list_head *sel_opt_inst_list) | |
3d249d4c | 2487 | { |
9b00cf2d JP |
2488 | return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast, |
2489 | sel_opt_inst_list); | |
3d249d4c JP |
2490 | } |
2491 | ||
d90f889e JP |
2492 | static int team_nl_send_event_port_get(struct team *team, |
2493 | struct team_port *port) | |
3d249d4c | 2494 | { |
d90f889e JP |
2495 | return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast, |
2496 | port); | |
3d249d4c JP |
2497 | } |
2498 | ||
2499 | static int team_nl_init(void) | |
2500 | { | |
2501 | int err; | |
2502 | ||
2503 | err = genl_register_family_with_ops(&team_nl_family, team_nl_ops, | |
2504 | ARRAY_SIZE(team_nl_ops)); | |
2505 | if (err) | |
2506 | return err; | |
2507 | ||
2508 | err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp); | |
2509 | if (err) | |
2510 | goto err_change_event_grp_reg; | |
2511 | ||
2512 | return 0; | |
2513 | ||
2514 | err_change_event_grp_reg: | |
2515 | genl_unregister_family(&team_nl_family); | |
2516 | ||
2517 | return err; | |
2518 | } | |
2519 | ||
2520 | static void team_nl_fini(void) | |
2521 | { | |
2522 | genl_unregister_family(&team_nl_family); | |
2523 | } | |
2524 | ||
2525 | ||
2526 | /****************** | |
2527 | * Change checkers | |
2528 | ******************/ | |
2529 | ||
b82b9183 | 2530 | static void __team_options_change_check(struct team *team) |
3d249d4c JP |
2531 | { |
2532 | int err; | |
01048d9a JP |
2533 | struct team_option_inst *opt_inst; |
2534 | LIST_HEAD(sel_opt_inst_list); | |
3d249d4c | 2535 | |
01048d9a JP |
2536 | list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
2537 | if (opt_inst->changed) | |
2538 | list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); | |
2539 | } | |
2540 | err = team_nl_send_event_options_get(team, &sel_opt_inst_list); | |
0c7517e9 | 2541 | if (err && err != -ESRCH) |
9b00cf2d JP |
2542 | netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n", |
2543 | err); | |
3d249d4c JP |
2544 | } |
2545 | ||
2546 | /* rtnl lock is held */ | |
10f3f51d JP |
2547 | |
2548 | static void __team_port_change_send(struct team_port *port, bool linkup) | |
3d249d4c JP |
2549 | { |
2550 | int err; | |
2551 | ||
b82b9183 | 2552 | port->changed = true; |
71472ec1 JP |
2553 | port->state.linkup = linkup; |
2554 | team_refresh_port_linkup(port); | |
3d249d4c JP |
2555 | if (linkup) { |
2556 | struct ethtool_cmd ecmd; | |
2557 | ||
2558 | err = __ethtool_get_settings(port->dev, &ecmd); | |
2559 | if (!err) { | |
71472ec1 JP |
2560 | port->state.speed = ethtool_cmd_speed(&ecmd); |
2561 | port->state.duplex = ecmd.duplex; | |
3d249d4c JP |
2562 | goto send_event; |
2563 | } | |
2564 | } | |
71472ec1 JP |
2565 | port->state.speed = 0; |
2566 | port->state.duplex = 0; | |
3d249d4c JP |
2567 | |
2568 | send_event: | |
d90f889e | 2569 | err = team_nl_send_event_port_get(port->team, port); |
0c7517e9 JP |
2570 | if (err && err != -ESRCH) |
2571 | netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n", | |
2572 | port->dev->name, err); | |
3d249d4c JP |
2573 | |
2574 | } | |
2575 | ||
06a7fc42 FL |
2576 | static void __team_carrier_check(struct team *team) |
2577 | { | |
2578 | struct team_port *port; | |
2579 | bool team_linkup; | |
2580 | ||
e185483e FL |
2581 | if (team->user_carrier_enabled) |
2582 | return; | |
2583 | ||
06a7fc42 FL |
2584 | team_linkup = false; |
2585 | list_for_each_entry(port, &team->port_list, list) { | |
2586 | if (port->linkup) { | |
2587 | team_linkup = true; | |
2588 | break; | |
2589 | } | |
2590 | } | |
2591 | ||
2592 | if (team_linkup) | |
2593 | netif_carrier_on(team->dev); | |
2594 | else | |
2595 | netif_carrier_off(team->dev); | |
2596 | } | |
2597 | ||
10f3f51d JP |
2598 | static void __team_port_change_check(struct team_port *port, bool linkup) |
2599 | { | |
2600 | if (port->state.linkup != linkup) | |
2601 | __team_port_change_send(port, linkup); | |
06a7fc42 | 2602 | __team_carrier_check(port->team); |
10f3f51d JP |
2603 | } |
2604 | ||
2605 | static void __team_port_change_port_added(struct team_port *port, bool linkup) | |
2606 | { | |
2607 | __team_port_change_send(port, linkup); | |
06a7fc42 | 2608 | __team_carrier_check(port->team); |
10f3f51d JP |
2609 | } |
2610 | ||
2611 | static void __team_port_change_port_removed(struct team_port *port) | |
2612 | { | |
2613 | port->removed = true; | |
2614 | __team_port_change_send(port, false); | |
06a7fc42 | 2615 | __team_carrier_check(port->team); |
10f3f51d JP |
2616 | } |
2617 | ||
3d249d4c JP |
2618 | static void team_port_change_check(struct team_port *port, bool linkup) |
2619 | { | |
2620 | struct team *team = port->team; | |
2621 | ||
61dc3461 | 2622 | mutex_lock(&team->lock); |
3d249d4c | 2623 | __team_port_change_check(port, linkup); |
61dc3461 | 2624 | mutex_unlock(&team->lock); |
3d249d4c JP |
2625 | } |
2626 | ||
0f1aad2b | 2627 | |
3d249d4c JP |
2628 | /************************************ |
2629 | * Net device notifier event handler | |
2630 | ************************************/ | |
2631 | ||
2632 | static int team_device_event(struct notifier_block *unused, | |
2633 | unsigned long event, void *ptr) | |
2634 | { | |
2635 | struct net_device *dev = (struct net_device *) ptr; | |
2636 | struct team_port *port; | |
2637 | ||
2638 | port = team_port_get_rtnl(dev); | |
2639 | if (!port) | |
2640 | return NOTIFY_DONE; | |
2641 | ||
2642 | switch (event) { | |
2643 | case NETDEV_UP: | |
2644 | if (netif_carrier_ok(dev)) | |
2645 | team_port_change_check(port, true); | |
2646 | case NETDEV_DOWN: | |
2647 | team_port_change_check(port, false); | |
2648 | case NETDEV_CHANGE: | |
2649 | if (netif_running(port->dev)) | |
2650 | team_port_change_check(port, | |
2651 | !!netif_carrier_ok(port->dev)); | |
2652 | break; | |
2653 | case NETDEV_UNREGISTER: | |
2654 | team_del_slave(port->team->dev, dev); | |
2655 | break; | |
2656 | case NETDEV_FEAT_CHANGE: | |
2657 | team_compute_features(port->team); | |
2658 | break; | |
2659 | case NETDEV_CHANGEMTU: | |
2660 | /* Forbid to change mtu of underlaying device */ | |
2661 | return NOTIFY_BAD; | |
2662 | case NETDEV_PRE_TYPE_CHANGE: | |
2663 | /* Forbid to change type of underlaying device */ | |
2664 | return NOTIFY_BAD; | |
2665 | } | |
2666 | return NOTIFY_DONE; | |
2667 | } | |
2668 | ||
2669 | static struct notifier_block team_notifier_block __read_mostly = { | |
2670 | .notifier_call = team_device_event, | |
2671 | }; | |
2672 | ||
2673 | ||
2674 | /*********************** | |
2675 | * Module init and exit | |
2676 | ***********************/ | |
2677 | ||
2678 | static int __init team_module_init(void) | |
2679 | { | |
2680 | int err; | |
2681 | ||
2682 | register_netdevice_notifier(&team_notifier_block); | |
2683 | ||
2684 | err = rtnl_link_register(&team_link_ops); | |
2685 | if (err) | |
2686 | goto err_rtnl_reg; | |
2687 | ||
2688 | err = team_nl_init(); | |
2689 | if (err) | |
2690 | goto err_nl_init; | |
2691 | ||
2692 | return 0; | |
2693 | ||
2694 | err_nl_init: | |
2695 | rtnl_link_unregister(&team_link_ops); | |
2696 | ||
2697 | err_rtnl_reg: | |
2698 | unregister_netdevice_notifier(&team_notifier_block); | |
2699 | ||
2700 | return err; | |
2701 | } | |
2702 | ||
2703 | static void __exit team_module_exit(void) | |
2704 | { | |
2705 | team_nl_fini(); | |
2706 | rtnl_link_unregister(&team_link_ops); | |
2707 | unregister_netdevice_notifier(&team_notifier_block); | |
2708 | } | |
2709 | ||
2710 | module_init(team_module_init); | |
2711 | module_exit(team_module_exit); | |
2712 | ||
2713 | MODULE_LICENSE("GPL v2"); | |
2714 | MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); | |
2715 | MODULE_DESCRIPTION("Ethernet team device driver"); | |
2716 | MODULE_ALIAS_RTNL_LINK(DRV_NAME); |