18 static const struct blobmsg_policy bridge_attrs[__BRIDGE_ATTR_MAX] = {
19 [BRIDGE_ATTR_IFNAME] = { "ifname", BLOBMSG_TYPE_ARRAY },
20 [BRIDGE_ATTR_STP] = { "stp", BLOBMSG_TYPE_BOOL },
23 static const union config_param_info bridge_attr_info[__BRIDGE_ATTR_MAX] = {
24 [BRIDGE_ATTR_IFNAME] = { .type = BLOBMSG_TYPE_STRING },
27 static const struct config_param_list bridge_attr_list = {
28 .n_params = __BRIDGE_ATTR_MAX,
29 .params = bridge_attrs,
30 .info = bridge_attr_info,
33 .next = { &device_attr_list },
36 static struct device *bridge_create(struct blob_attr *attr);
37 static void bridge_config_init(struct device *dev);
38 static void bridge_free(struct device *dev);
39 static void bridge_dump_status(struct device *dev, struct blob_buf *b);
41 const struct device_type bridge_device_type = {
43 .config_params = &bridge_attr_list,
45 .create = bridge_create,
46 .config_init = bridge_config_init,
48 .dump_status = bridge_dump_status,
53 device_state_cb set_state;
55 struct blob_attr *ifnames;
58 struct list_head members;
62 struct bridge_member {
63 struct list_head list;
64 struct bridge_state *bst;
65 struct device_user dev;
70 bridge_disable_member(struct bridge_member *bm)
72 struct bridge_state *bst = bm->bst;
77 system_bridge_delif(&bst->dev, bm->dev.dev);
78 device_release(&bm->dev);
84 bridge_enable_member(struct bridge_member *bm)
86 struct bridge_state *bst = bm->bst;
92 ret = device_claim(&bm->dev);
96 ret = system_bridge_addif(&bst->dev, bm->dev.dev);
109 bridge_member_cb(struct device_user *dev, enum device_event ev)
111 struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
112 struct bridge_state *bst = bm->bst;
116 assert(!bm->present);
122 bridge_enable_member(bm);
123 else if (bst->n_present == 1)
124 device_set_present(&bst->dev, true);
127 case DEV_EVENT_REMOVE:
132 bridge_disable_member(bm);
135 bm->bst->n_present--;
136 if (bst->n_present == 0)
137 device_set_present(&bst->dev, false);
146 bridge_set_down(struct bridge_state *bst)
148 struct bridge_member *bm;
150 bst->set_state(&bst->dev, false);
152 list_for_each_entry(bm, &bst->members, list)
153 bridge_disable_member(bm);
155 system_bridge_delbr(&bst->dev);
161 bridge_set_up(struct bridge_state *bst)
163 struct bridge_member *bm;
169 ret = system_bridge_addbr(&bst->dev);
173 list_for_each_entry(bm, &bst->members, list)
174 bridge_enable_member(bm);
176 if (!bst->n_present) {
177 /* initialization of all member interfaces failed */
178 system_bridge_delbr(&bst->dev);
179 device_set_present(&bst->dev, false);
183 ret = bst->set_state(&bst->dev, true);
185 bridge_set_down(bst);
192 bridge_set_state(struct device *dev, bool up)
194 struct bridge_state *bst;
196 bst = container_of(dev, struct bridge_state, dev);
199 return bridge_set_up(bst);
201 return bridge_set_down(bst);
204 static struct bridge_member *
205 bridge_create_member(struct bridge_state *bst, struct device *dev)
207 struct bridge_member *bm;
209 bm = calloc(1, sizeof(*bm));
211 bm->dev.cb = bridge_member_cb;
212 device_add_user(&bm->dev, dev);
214 list_add_tail(&bm->list, &bst->members);
217 bridge_enable_member(bm);
223 bridge_free_member(struct bridge_member *bm)
226 bridge_member_cb(&bm->dev, DEV_EVENT_REMOVE);
227 bm->bst->n_present--;
228 if (bm->bst->dev.active)
229 bridge_disable_member(bm);
233 device_remove_user(&bm->dev);
238 bridge_add_member(struct bridge_state *bst, const char *name)
242 dev = device_get(name, true);
246 bridge_create_member(bst, dev);
250 bridge_hotplug_add(struct device *dev, struct device *member)
252 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
254 bridge_create_member(bst, member);
260 bridge_hotplug_del(struct device *dev, struct device *member)
262 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
263 struct bridge_member *bm;
265 list_for_each_entry(bm, &bst->members, list) {
266 if (bm->dev.dev != member)
269 bridge_free_member(bm);
276 static const struct device_hotplug_ops bridge_ops = {
277 .add = bridge_hotplug_add,
278 .del = bridge_hotplug_del
282 bridge_free(struct device *dev)
284 struct bridge_state *bst;
285 struct bridge_member *bm;
288 bst = container_of(dev, struct bridge_state, dev);
289 while (!list_empty(&bst->members)) {
290 bm = list_first_entry(&bst->members, struct bridge_member, list);
291 bridge_free_member(bm);
297 bridge_dump_status(struct device *dev, struct blob_buf *b)
299 struct bridge_state *bst;
300 struct bridge_member *bm;
303 bst = container_of(dev, struct bridge_state, dev);
305 list = blobmsg_open_array(b, "bridge-members");
306 list_for_each_entry(bm, &bst->members, list) {
307 blobmsg_add_string(b, NULL, bm->dev.dev->ifname);
309 blobmsg_close_array(b, list);
313 bridge_config_init(struct device *dev)
315 struct bridge_state *bst;
316 struct blob_attr *cur;
319 bst = container_of(dev, struct bridge_state, dev);
320 blobmsg_for_each_attr(cur, bst->ifnames, rem) {
321 bridge_add_member(bst, blobmsg_data(cur));
325 static struct device *
326 bridge_create(struct blob_attr *attr)
328 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
329 struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
330 struct bridge_state *bst;
331 struct device *dev = NULL;
334 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
335 blob_data(attr), blob_len(attr));
336 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, tb_br,
337 blob_data(attr), blob_len(attr));
339 if (!tb_dev[DEV_ATTR_NAME])
342 if (!tb_br[BRIDGE_ATTR_IFNAME])
345 name = blobmsg_data(tb_dev[DEV_ATTR_NAME]);
347 bst = calloc(1, sizeof(*bst));
352 device_init(dev, &bridge_device_type, name);
353 device_init_settings(dev, tb_dev);
354 dev->config_pending = true;
355 bst->ifnames = tb_br[BRIDGE_ATTR_IFNAME];
357 bst->set_state = dev->set_state;
358 dev->set_state = bridge_set_state;
360 dev->hotplug_ops = &bridge_ops;
362 INIT_LIST_HEAD(&bst->members);