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 bridge_member *primary_port;
88 struct vlist_tree members;
92 struct bridge_member {
93 struct vlist_node node;
94 struct bridge_state *bst;
95 struct device_user dev;
101 bridge_reset_primary(struct bridge_state *bst)
103 struct bridge_member *bm;
105 bst->primary_port = NULL;
106 vlist_for_each_element(&bst->members, bm, node) {
110 bst->primary_port = bm;
111 memcpy(bst->dev.settings.macaddr, bm->dev.dev->settings.macaddr, 6);
112 bst->dev.settings.flags |= DEV_OPT_MACADDR;
118 bridge_disable_member(struct bridge_member *bm)
120 struct bridge_state *bst = bm->bst;
125 system_bridge_delif(&bst->dev, bm->dev.dev);
126 device_release(&bm->dev);
132 bridge_enable_member(struct bridge_member *bm)
134 struct bridge_state *bst = bm->bst;
140 ret = device_claim(&bm->dev);
144 ret = system_bridge_addif(&bst->dev, bm->dev.dev);
146 D(DEVICE, "Bridge device %s could not be added\n", bm->dev.dev->ifname);
159 bridge_remove_member(struct bridge_member *bm)
161 struct bridge_state *bst = bm->bst;
166 if (bm == bst->primary_port);
167 bridge_reset_primary(bst);
170 bridge_disable_member(bm);
173 bm->bst->n_present--;
175 bst->force_active = false;
176 if (bst->n_present == 0)
177 device_set_present(&bst->dev, false);
181 bridge_member_cb(struct device_user *dev, enum device_event ev)
183 struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
184 struct bridge_state *bst = bm->bst;
188 assert(!bm->present);
194 bridge_enable_member(bm);
195 else if (bst->n_present == 1)
196 device_set_present(&bst->dev, true);
199 case DEV_EVENT_REMOVE:
201 vlist_delete(&bst->members, &bm->node);
206 bridge_remove_member(bm);
215 bridge_set_down(struct bridge_state *bst)
217 struct bridge_member *bm;
219 bst->set_state(&bst->dev, false);
221 vlist_for_each_element(&bst->members, bm, node)
222 bridge_disable_member(bm);
224 system_bridge_delbr(&bst->dev);
230 bridge_set_up(struct bridge_state *bst)
232 struct bridge_member *bm;
235 if (!bst->force_active && !bst->n_present)
238 ret = system_bridge_addbr(&bst->dev, &bst->config);
242 vlist_for_each_element(&bst->members, bm, node)
243 bridge_enable_member(bm);
245 if (!bst->force_active && !bst->n_present) {
246 /* initialization of all member interfaces failed */
247 system_bridge_delbr(&bst->dev);
248 device_set_present(&bst->dev, false);
252 bridge_reset_primary(bst);
253 ret = bst->set_state(&bst->dev, true);
255 bridge_set_down(bst);
262 bridge_set_state(struct device *dev, bool up)
264 struct bridge_state *bst;
266 bst = container_of(dev, struct bridge_state, dev);
269 return bridge_set_up(bst);
271 return bridge_set_down(bst);
274 static struct bridge_member *
275 bridge_create_member(struct bridge_state *bst, struct device *dev, bool hotplug)
277 struct bridge_member *bm;
279 bm = calloc(1, sizeof(*bm) + strlen(dev->ifname) + 1);
281 bm->dev.cb = bridge_member_cb;
282 bm->dev.hotplug = hotplug;
283 strcpy(bm->name, dev->ifname);
285 vlist_add(&bst->members, &bm->node, bm->name);
287 bm->node.version = -1;
293 bridge_member_update(struct vlist_tree *tree, struct vlist_node *node_new,
294 struct vlist_node *node_old)
296 struct bridge_member *bm;
300 bm = container_of(node_new, struct bridge_member, node);
309 device_add_user(&bm->dev, dev);
314 bm = container_of(node_old, struct bridge_member, node);
315 bridge_remove_member(bm);
316 device_remove_user(&bm->dev);
323 bridge_add_member(struct bridge_state *bst, const char *name)
327 dev = device_get(name, true);
331 bridge_create_member(bst, dev, false);
335 bridge_hotplug_add(struct device *dev, struct device *member)
337 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
339 bridge_create_member(bst, member, true);
345 bridge_hotplug_del(struct device *dev, struct device *member)
347 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
348 struct bridge_member *bm;
350 bm = vlist_find(&bst->members, member->ifname, bm, node);
352 return UBUS_STATUS_NOT_FOUND;
354 vlist_delete(&bst->members, &bm->node);
359 bridge_hotplug_prepare(struct device *dev)
361 struct bridge_state *bst;
363 bst = container_of(dev, struct bridge_state, dev);
364 bst->force_active = true;
365 device_set_present(&bst->dev, true);
370 static const struct device_hotplug_ops bridge_ops = {
371 .prepare = bridge_hotplug_prepare,
372 .add = bridge_hotplug_add,
373 .del = bridge_hotplug_del
377 bridge_free(struct device *dev)
379 struct bridge_state *bst;
381 bst = container_of(dev, struct bridge_state, dev);
382 vlist_flush_all(&bst->members);
387 bridge_dump_info(struct device *dev, struct blob_buf *b)
389 struct bridge_state *bst;
390 struct bridge_member *bm;
393 bst = container_of(dev, struct bridge_state, dev);
395 system_if_dump_info(dev, b);
396 list = blobmsg_open_array(b, "bridge-members");
398 vlist_for_each_element(&bst->members, bm, node)
399 blobmsg_add_string(b, NULL, bm->dev.dev->ifname);
401 blobmsg_close_array(b, list);
405 bridge_config_init(struct device *dev)
407 struct bridge_state *bst;
408 struct blob_attr *cur;
411 bst = container_of(dev, struct bridge_state, dev);
416 vlist_update(&bst->members);
417 blobmsg_for_each_attr(cur, bst->ifnames, rem) {
418 bridge_add_member(bst, blobmsg_data(cur));
420 vlist_flush(&bst->members);
424 bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
426 struct bridge_config *cfg = &bst->config;
427 struct blob_attr *cur;
431 cfg->forward_delay = 2;
432 cfg->igmp_snoop = true;
434 if ((cur = tb[BRIDGE_ATTR_STP]))
435 cfg->stp = blobmsg_get_bool(cur);
437 if ((cur = tb[BRIDGE_ATTR_FORWARD_DELAY]))
438 cfg->forward_delay = blobmsg_get_u32(cur);
440 if ((cur = tb[BRIDGE_ATTR_IGMP_SNOOP]))
441 cfg->igmp_snoop = blobmsg_get_bool(cur);
443 if ((cur = tb[BRIDGE_ATTR_AGEING_TIME])) {
444 cfg->ageing_time = blobmsg_get_u32(cur);
445 cfg->flags |= BRIDGE_OPT_AGEING_TIME;
448 if ((cur = tb[BRIDGE_ATTR_HELLO_TIME])) {
449 cfg->hello_time = blobmsg_get_u32(cur);
450 cfg->flags |= BRIDGE_OPT_HELLO_TIME;
453 if ((cur = tb[BRIDGE_ATTR_MAX_AGE])) {
454 cfg->max_age = blobmsg_get_u32(cur);
455 cfg->flags |= BRIDGE_OPT_MAX_AGE;
460 bridge_reload(struct device *dev, struct blob_attr *attr)
462 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
463 struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
464 enum dev_change_type ret = DEV_CONFIG_APPLIED;
466 struct bridge_state *bst;
468 BUILD_BUG_ON(sizeof(diff) < __BRIDGE_ATTR_MAX / 8);
469 BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
471 bst = container_of(dev, struct bridge_state, dev);
473 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
474 blob_data(attr), blob_len(attr));
475 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, tb_br,
476 blob_data(attr), blob_len(attr));
478 bst->ifnames = tb_br[BRIDGE_ATTR_IFNAME];
479 device_init_settings(dev, tb_dev);
480 bridge_apply_settings(bst, tb_br);
482 if (bst->config_data) {
483 struct blob_attr *otb_dev[__DEV_ATTR_MAX];
484 struct blob_attr *otb_br[__BRIDGE_ATTR_MAX];
486 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb_dev,
487 blob_data(bst->config_data), blob_len(bst->config_data));
490 config_diff(tb_dev, otb_dev, &device_attr_list, &diff);
491 if (diff & ~(1 << DEV_ATTR_IFNAME))
492 ret = DEV_CONFIG_RESTART;
494 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, otb_br,
495 blob_data(bst->config_data), blob_len(bst->config_data));
498 config_diff(tb_br, otb_br, &bridge_attr_list, &diff);
499 if (diff & ~(1 << BRIDGE_ATTR_IFNAME))
500 ret = DEV_CONFIG_RESTART;
502 bridge_config_init(dev);
505 bst->config_data = attr;
509 static struct device *
510 bridge_create(const char *name, struct blob_attr *attr)
512 struct bridge_state *bst;
513 struct device *dev = NULL;
515 bst = calloc(1, sizeof(*bst));
520 device_init(dev, &bridge_device_type, name);
521 dev->config_pending = true;
523 bst->set_state = dev->set_state;
524 dev->set_state = bridge_set_state;
526 dev->hotplug_ops = &bridge_ops;
528 vlist_init(&bst->members, avl_strcmp, bridge_member_update);
529 bst->members.keep_old = true;
530 bridge_reload(dev, attr);