15 BRIDGE_ATTR_FORWARD_DELAY,
16 BRIDGE_ATTR_IGMP_SNOOP,
17 BRIDGE_ATTR_AGEING_TIME,
18 BRIDGE_ATTR_HELLO_TIME,
23 static const struct blobmsg_policy bridge_attrs[__BRIDGE_ATTR_MAX] = {
24 [BRIDGE_ATTR_IFNAME] = { "ifname", BLOBMSG_TYPE_ARRAY },
25 [BRIDGE_ATTR_STP] = { "stp", BLOBMSG_TYPE_BOOL },
26 [BRIDGE_ATTR_FORWARD_DELAY] = { "forward_delay", BLOBMSG_TYPE_INT32 },
27 [BRIDGE_ATTR_AGEING_TIME] = { "ageing_time", BLOBMSG_TYPE_INT32 },
28 [BRIDGE_ATTR_HELLO_TIME] = { "hello_time", BLOBMSG_TYPE_INT32 },
29 [BRIDGE_ATTR_MAX_AGE] = { "max_age", BLOBMSG_TYPE_INT32 },
30 [BRIDGE_ATTR_IGMP_SNOOP] = { "igmp_snooping", BLOBMSG_TYPE_BOOL },
33 static const union config_param_info bridge_attr_info[__BRIDGE_ATTR_MAX] = {
34 [BRIDGE_ATTR_IFNAME] = { .type = BLOBMSG_TYPE_STRING },
37 static const struct config_param_list bridge_attr_list = {
38 .n_params = __BRIDGE_ATTR_MAX,
39 .params = bridge_attrs,
40 .info = bridge_attr_info,
43 .next = { &device_attr_list },
46 static struct device *bridge_create(const char *name, struct blob_attr *attr);
47 static void bridge_config_init(struct device *dev);
48 static void bridge_free(struct device *dev);
49 static void bridge_dump_info(struct device *dev, struct blob_buf *b);
51 const struct device_type bridge_device_type = {
53 .config_params = &bridge_attr_list,
55 .create = bridge_create,
56 .config_init = bridge_config_init,
58 .dump_info = bridge_dump_info,
63 device_state_cb set_state;
65 struct bridge_config config;
66 struct blob_attr *ifnames;
70 struct vlist_tree members;
74 struct bridge_member {
75 struct vlist_node node;
76 struct bridge_state *bst;
77 struct device_user dev;
83 bridge_disable_member(struct bridge_member *bm)
85 struct bridge_state *bst = bm->bst;
90 system_bridge_delif(&bst->dev, bm->dev.dev);
91 device_release(&bm->dev);
97 bridge_enable_member(struct bridge_member *bm)
99 struct bridge_state *bst = bm->bst;
105 ret = device_claim(&bm->dev);
109 ret = system_bridge_addif(&bst->dev, bm->dev.dev);
111 D(DEVICE, "Bridge device %s could not be added\n", bm->dev.dev->ifname);
124 bridge_remove_member(struct bridge_member *bm)
126 struct bridge_state *bst = bm->bst;
132 bm->bst->n_present--;
134 bridge_disable_member(bm);
136 bst->force_active = false;
137 if (bst->n_present == 0)
138 device_set_present(&bst->dev, false);
142 bridge_member_cb(struct device_user *dev, enum device_event ev)
144 struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
145 struct bridge_state *bst = bm->bst;
149 assert(!bm->present);
155 bridge_enable_member(bm);
156 else if (bst->n_present == 1)
157 device_set_present(&bst->dev, true);
160 case DEV_EVENT_REMOVE:
162 vlist_delete(&bst->members, &bm->node);
167 bridge_remove_member(bm);
176 bridge_set_down(struct bridge_state *bst)
178 struct bridge_member *bm;
180 bst->set_state(&bst->dev, false);
182 vlist_for_each_element(&bst->members, bm, node)
183 bridge_disable_member(bm);
185 system_bridge_delbr(&bst->dev);
191 bridge_set_up(struct bridge_state *bst)
193 struct bridge_member *bm;
196 if (!bst->force_active && !bst->n_present)
199 ret = system_bridge_addbr(&bst->dev, &bst->config);
203 vlist_for_each_element(&bst->members, bm, node)
204 bridge_enable_member(bm);
206 if (!bst->force_active && !bst->n_present) {
207 /* initialization of all member interfaces failed */
208 system_bridge_delbr(&bst->dev);
209 device_set_present(&bst->dev, false);
213 ret = bst->set_state(&bst->dev, true);
215 bridge_set_down(bst);
222 bridge_set_state(struct device *dev, bool up)
224 struct bridge_state *bst;
226 bst = container_of(dev, struct bridge_state, dev);
229 return bridge_set_up(bst);
231 return bridge_set_down(bst);
234 static struct bridge_member *
235 bridge_create_member(struct bridge_state *bst, struct device *dev, bool hotplug)
237 struct bridge_member *bm;
239 bm = calloc(1, sizeof(*bm) + strlen(dev->ifname) + 1);
241 bm->dev.cb = bridge_member_cb;
242 bm->dev.hotplug = hotplug;
243 strcpy(bm->name, dev->ifname);
245 vlist_add(&bst->members, &bm->node, bm->name);
251 bridge_member_update(struct vlist_tree *tree, struct vlist_node *node_new,
252 struct vlist_node *node_old)
254 struct bridge_member *bm;
258 bm = container_of(node_new, struct bridge_member, node);
267 device_add_user(&bm->dev, dev);
272 bm = container_of(node_old, struct bridge_member, node);
273 bridge_remove_member(bm);
274 device_remove_user(&bm->dev);
281 bridge_add_member(struct bridge_state *bst, const char *name)
285 dev = device_get(name, true);
289 bridge_create_member(bst, dev, false);
293 bridge_hotplug_add(struct device *dev, struct device *member)
295 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
297 bridge_create_member(bst, member, true);
303 bridge_hotplug_del(struct device *dev, struct device *member)
305 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
306 struct bridge_member *bm;
308 bm = vlist_find(&bst->members, member->ifname, bm, node);
310 return UBUS_STATUS_NOT_FOUND;
312 vlist_delete(&bst->members, &bm->node);
317 bridge_hotplug_prepare(struct device *dev)
319 struct bridge_state *bst;
321 bst = container_of(dev, struct bridge_state, dev);
322 bst->force_active = true;
323 device_set_present(&bst->dev, true);
328 static const struct device_hotplug_ops bridge_ops = {
329 .prepare = bridge_hotplug_prepare,
330 .add = bridge_hotplug_add,
331 .del = bridge_hotplug_del
335 bridge_free(struct device *dev)
337 struct bridge_state *bst;
340 bst = container_of(dev, struct bridge_state, dev);
341 vlist_flush_all(&bst->members);
346 bridge_dump_info(struct device *dev, struct blob_buf *b)
348 struct bridge_state *bst;
349 struct bridge_member *bm;
352 bst = container_of(dev, struct bridge_state, dev);
354 system_if_dump_info(dev, b);
355 list = blobmsg_open_array(b, "bridge-members");
357 vlist_for_each_element(&bst->members, bm, node)
358 blobmsg_add_string(b, NULL, bm->dev.dev->ifname);
360 blobmsg_close_array(b, list);
364 bridge_config_init(struct device *dev)
366 struct bridge_state *bst;
367 struct blob_attr *cur;
370 bst = container_of(dev, struct bridge_state, dev);
375 blobmsg_for_each_attr(cur, bst->ifnames, rem) {
376 bridge_add_member(bst, blobmsg_data(cur));
381 bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
383 struct bridge_config *cfg = &bst->config;
384 struct blob_attr *cur;
388 cfg->forward_delay = 1;
389 cfg->igmp_snoop = true;
391 if ((cur = tb[BRIDGE_ATTR_STP]))
392 cfg->stp = blobmsg_get_bool(cur);
394 if ((cur = tb[BRIDGE_ATTR_FORWARD_DELAY]))
395 cfg->forward_delay = blobmsg_get_u32(cur);
397 if ((cur = tb[BRIDGE_ATTR_IGMP_SNOOP]))
398 cfg->igmp_snoop = blobmsg_get_bool(cur);
400 if ((cur = tb[BRIDGE_ATTR_AGEING_TIME])) {
401 cfg->ageing_time = blobmsg_get_u32(cur);
402 cfg->flags |= BRIDGE_OPT_AGEING_TIME;
405 if ((cur = tb[BRIDGE_ATTR_HELLO_TIME])) {
406 cfg->hello_time = blobmsg_get_u32(cur);
407 cfg->flags |= BRIDGE_OPT_HELLO_TIME;
410 if ((cur = tb[BRIDGE_ATTR_MAX_AGE])) {
411 cfg->max_age = blobmsg_get_u32(cur);
412 cfg->flags |= BRIDGE_OPT_MAX_AGE;
416 static struct device *
417 bridge_create(const char *name, struct blob_attr *attr)
419 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
420 struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
421 struct bridge_state *bst;
422 struct device *dev = NULL;
424 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
425 blob_data(attr), blob_len(attr));
426 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, tb_br,
427 blob_data(attr), blob_len(attr));
429 bst = calloc(1, sizeof(*bst));
434 device_init(dev, &bridge_device_type, name);
435 device_init_settings(dev, tb_dev);
436 dev->config_pending = true;
437 bst->ifnames = tb_br[BRIDGE_ATTR_IFNAME];
438 bridge_apply_settings(bst, tb_br);
440 bst->set_state = dev->set_state;
441 dev->set_state = bridge_set_state;
443 dev->hotplug_ops = &bridge_ops;
445 vlist_init(&bst->members, avl_strcmp, bridge_member_update);
446 bst->members.keep_old = true;