2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
22 #include "interface.h"
28 BRIDGE_ATTR_FORWARD_DELAY,
29 BRIDGE_ATTR_IGMP_SNOOP,
30 BRIDGE_ATTR_AGEING_TIME,
31 BRIDGE_ATTR_HELLO_TIME,
36 static const struct blobmsg_policy bridge_attrs[__BRIDGE_ATTR_MAX] = {
37 [BRIDGE_ATTR_IFNAME] = { "ifname", BLOBMSG_TYPE_ARRAY },
38 [BRIDGE_ATTR_STP] = { "stp", BLOBMSG_TYPE_BOOL },
39 [BRIDGE_ATTR_FORWARD_DELAY] = { "forward_delay", BLOBMSG_TYPE_INT32 },
40 [BRIDGE_ATTR_AGEING_TIME] = { "ageing_time", BLOBMSG_TYPE_INT32 },
41 [BRIDGE_ATTR_HELLO_TIME] = { "hello_time", BLOBMSG_TYPE_INT32 },
42 [BRIDGE_ATTR_MAX_AGE] = { "max_age", BLOBMSG_TYPE_INT32 },
43 [BRIDGE_ATTR_IGMP_SNOOP] = { "igmp_snooping", BLOBMSG_TYPE_BOOL },
46 static const union config_param_info bridge_attr_info[__BRIDGE_ATTR_MAX] = {
47 [BRIDGE_ATTR_IFNAME] = { .type = BLOBMSG_TYPE_STRING },
50 static const struct config_param_list bridge_attr_list = {
51 .n_params = __BRIDGE_ATTR_MAX,
52 .params = bridge_attrs,
53 .info = bridge_attr_info,
56 .next = { &device_attr_list },
59 static struct device *bridge_create(const char *name, struct blob_attr *attr);
60 static void bridge_config_init(struct device *dev);
61 static void bridge_free(struct device *dev);
62 static void bridge_dump_info(struct device *dev, struct blob_buf *b);
64 bridge_reload(struct device *dev, struct blob_attr *attr);
66 const struct device_type bridge_device_type = {
68 .config_params = &bridge_attr_list,
70 .create = bridge_create,
71 .config_init = bridge_config_init,
72 .reload = bridge_reload,
74 .dump_info = bridge_dump_info,
79 device_state_cb set_state;
81 struct blob_attr *config_data;
82 struct bridge_config config;
83 struct blob_attr *ifnames;
87 struct vlist_tree members;
91 struct bridge_member {
92 struct vlist_node node;
93 struct bridge_state *bst;
94 struct device_user dev;
100 bridge_disable_member(struct bridge_member *bm)
102 struct bridge_state *bst = bm->bst;
107 system_bridge_delif(&bst->dev, bm->dev.dev);
108 device_release(&bm->dev);
114 bridge_enable_member(struct bridge_member *bm)
116 struct bridge_state *bst = bm->bst;
122 ret = device_claim(&bm->dev);
126 ret = system_bridge_addif(&bst->dev, bm->dev.dev);
128 D(DEVICE, "Bridge device %s could not be added\n", bm->dev.dev->ifname);
141 bridge_remove_member(struct bridge_member *bm)
143 struct bridge_state *bst = bm->bst;
149 bridge_disable_member(bm);
152 bm->bst->n_present--;
154 bst->force_active = false;
155 if (bst->n_present == 0)
156 device_set_present(&bst->dev, false);
160 bridge_member_cb(struct device_user *dev, enum device_event ev)
162 struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
163 struct bridge_state *bst = bm->bst;
167 assert(!bm->present);
173 bridge_enable_member(bm);
174 else if (bst->n_present == 1)
175 device_set_present(&bst->dev, true);
178 case DEV_EVENT_REMOVE:
180 vlist_delete(&bst->members, &bm->node);
185 bridge_remove_member(bm);
194 bridge_set_down(struct bridge_state *bst)
196 struct bridge_member *bm;
198 bst->set_state(&bst->dev, false);
200 vlist_for_each_element(&bst->members, bm, node)
201 bridge_disable_member(bm);
203 system_bridge_delbr(&bst->dev);
209 bridge_set_up(struct bridge_state *bst)
211 struct bridge_member *bm;
214 if (!bst->force_active && !bst->n_present)
217 ret = system_bridge_addbr(&bst->dev, &bst->config);
221 vlist_for_each_element(&bst->members, bm, node)
222 bridge_enable_member(bm);
224 if (!bst->force_active && !bst->n_present) {
225 /* initialization of all member interfaces failed */
226 system_bridge_delbr(&bst->dev);
227 device_set_present(&bst->dev, false);
231 ret = bst->set_state(&bst->dev, true);
233 bridge_set_down(bst);
240 bridge_set_state(struct device *dev, bool up)
242 struct bridge_state *bst;
244 bst = container_of(dev, struct bridge_state, dev);
247 return bridge_set_up(bst);
249 return bridge_set_down(bst);
252 static struct bridge_member *
253 bridge_create_member(struct bridge_state *bst, struct device *dev, bool hotplug)
255 struct bridge_member *bm;
257 bm = calloc(1, sizeof(*bm) + strlen(dev->ifname) + 1);
259 bm->dev.cb = bridge_member_cb;
260 bm->dev.hotplug = hotplug;
261 strcpy(bm->name, dev->ifname);
263 vlist_add(&bst->members, &bm->node, bm->name);
265 bm->node.version = -1;
271 bridge_member_update(struct vlist_tree *tree, struct vlist_node *node_new,
272 struct vlist_node *node_old)
274 struct bridge_member *bm;
278 bm = container_of(node_new, struct bridge_member, node);
287 device_add_user(&bm->dev, dev);
292 bm = container_of(node_old, struct bridge_member, node);
293 bridge_remove_member(bm);
294 device_remove_user(&bm->dev);
301 bridge_add_member(struct bridge_state *bst, const char *name)
305 dev = device_get(name, true);
309 bridge_create_member(bst, dev, false);
313 bridge_hotplug_add(struct device *dev, struct device *member)
315 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
317 bridge_create_member(bst, member, true);
323 bridge_hotplug_del(struct device *dev, struct device *member)
325 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
326 struct bridge_member *bm;
328 bm = vlist_find(&bst->members, member->ifname, bm, node);
330 return UBUS_STATUS_NOT_FOUND;
332 vlist_delete(&bst->members, &bm->node);
337 bridge_hotplug_prepare(struct device *dev)
339 struct bridge_state *bst;
341 bst = container_of(dev, struct bridge_state, dev);
342 bst->force_active = true;
343 device_set_present(&bst->dev, true);
348 static const struct device_hotplug_ops bridge_ops = {
349 .prepare = bridge_hotplug_prepare,
350 .add = bridge_hotplug_add,
351 .del = bridge_hotplug_del
355 bridge_free(struct device *dev)
357 struct bridge_state *bst;
359 bst = container_of(dev, struct bridge_state, dev);
360 vlist_flush_all(&bst->members);
365 bridge_dump_info(struct device *dev, struct blob_buf *b)
367 struct bridge_state *bst;
368 struct bridge_member *bm;
371 bst = container_of(dev, struct bridge_state, dev);
373 system_if_dump_info(dev, b);
374 list = blobmsg_open_array(b, "bridge-members");
376 vlist_for_each_element(&bst->members, bm, node)
377 blobmsg_add_string(b, NULL, bm->dev.dev->ifname);
379 blobmsg_close_array(b, list);
383 bridge_config_init(struct device *dev)
385 struct bridge_state *bst;
386 struct blob_attr *cur;
389 bst = container_of(dev, struct bridge_state, dev);
394 vlist_update(&bst->members);
395 blobmsg_for_each_attr(cur, bst->ifnames, rem) {
396 bridge_add_member(bst, blobmsg_data(cur));
398 vlist_flush(&bst->members);
402 bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
404 struct bridge_config *cfg = &bst->config;
405 struct blob_attr *cur;
409 cfg->forward_delay = 2;
410 cfg->igmp_snoop = true;
412 if ((cur = tb[BRIDGE_ATTR_STP]))
413 cfg->stp = blobmsg_get_bool(cur);
415 if ((cur = tb[BRIDGE_ATTR_FORWARD_DELAY]))
416 cfg->forward_delay = blobmsg_get_u32(cur);
418 if ((cur = tb[BRIDGE_ATTR_IGMP_SNOOP]))
419 cfg->igmp_snoop = blobmsg_get_bool(cur);
421 if ((cur = tb[BRIDGE_ATTR_AGEING_TIME])) {
422 cfg->ageing_time = blobmsg_get_u32(cur);
423 cfg->flags |= BRIDGE_OPT_AGEING_TIME;
426 if ((cur = tb[BRIDGE_ATTR_HELLO_TIME])) {
427 cfg->hello_time = blobmsg_get_u32(cur);
428 cfg->flags |= BRIDGE_OPT_HELLO_TIME;
431 if ((cur = tb[BRIDGE_ATTR_MAX_AGE])) {
432 cfg->max_age = blobmsg_get_u32(cur);
433 cfg->flags |= BRIDGE_OPT_MAX_AGE;
438 bridge_reload(struct device *dev, struct blob_attr *attr)
440 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
441 struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
442 enum dev_change_type ret = DEV_CONFIG_APPLIED;
444 struct bridge_state *bst;
446 BUILD_BUG_ON(sizeof(diff) < __BRIDGE_ATTR_MAX / 8);
447 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
449 bst = container_of(dev, struct bridge_state, dev);
451 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
452 blob_data(attr), blob_len(attr));
453 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, tb_br,
454 blob_data(attr), blob_len(attr));
456 bst->ifnames = tb_br[BRIDGE_ATTR_IFNAME];
457 device_init_settings(dev, tb_dev);
458 bridge_apply_settings(bst, tb_br);
460 if (bst->config_data) {
461 struct blob_attr *otb_dev[__DEV_ATTR_MAX];
462 struct blob_attr *otb_br[__BRIDGE_ATTR_MAX];
464 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb_dev,
465 blob_data(bst->config_data), blob_len(bst->config_data));
468 config_diff(tb_dev, otb_dev, &device_attr_list, &diff);
469 if (diff & ~(1 << DEV_ATTR_IFNAME))
470 ret = DEV_CONFIG_RESTART;
472 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, otb_br,
473 blob_data(bst->config_data), blob_len(bst->config_data));
476 config_diff(tb_br, otb_br, &bridge_attr_list, &diff);
477 if (diff & ~(1 << BRIDGE_ATTR_IFNAME))
478 ret = DEV_CONFIG_RESTART;
480 bridge_config_init(dev);
483 bst->config_data = attr;
487 static struct device *
488 bridge_create(const char *name, struct blob_attr *attr)
490 struct bridge_state *bst;
491 struct device *dev = NULL;
493 bst = calloc(1, sizeof(*bst));
498 device_init(dev, &bridge_device_type, name);
499 dev->config_pending = true;
501 bst->set_state = dev->set_state;
502 dev->set_state = bridge_set_state;
504 dev->hotplug_ops = &bridge_ops;
506 vlist_init(&bst->members, avl_strcmp, bridge_member_update);
507 bst->members.keep_old = true;
508 bridge_reload(dev, attr);