15 BRIDGE_ATTR_FORWARD_DELAY,
16 BRIDGE_ATTR_AGEING_TIME,
17 BRIDGE_ATTR_HELLO_TIME,
22 static const struct blobmsg_policy bridge_attrs[__BRIDGE_ATTR_MAX] = {
23 [BRIDGE_ATTR_IFNAME] = { "ifname", BLOBMSG_TYPE_ARRAY },
24 [BRIDGE_ATTR_STP] = { "stp", BLOBMSG_TYPE_BOOL },
25 [BRIDGE_ATTR_FORWARD_DELAY] = { "forward_delay", BLOBMSG_TYPE_INT32 },
26 [BRIDGE_ATTR_AGEING_TIME] = { "ageing_time", BLOBMSG_TYPE_INT32 },
27 [BRIDGE_ATTR_HELLO_TIME] = { "hello_time", BLOBMSG_TYPE_INT32 },
28 [BRIDGE_ATTR_MAX_AGE] = { "max_age", BLOBMSG_TYPE_INT32 },
31 static const union config_param_info bridge_attr_info[__BRIDGE_ATTR_MAX] = {
32 [BRIDGE_ATTR_IFNAME] = { .type = BLOBMSG_TYPE_STRING },
35 static const struct config_param_list bridge_attr_list = {
36 .n_params = __BRIDGE_ATTR_MAX,
37 .params = bridge_attrs,
38 .info = bridge_attr_info,
41 .next = { &device_attr_list },
44 static struct device *bridge_create(struct blob_attr *attr);
45 static void bridge_config_init(struct device *dev);
46 static void bridge_free(struct device *dev);
47 static void bridge_dump_status(struct device *dev, struct blob_buf *b);
49 const struct device_type bridge_device_type = {
51 .config_params = &bridge_attr_list,
53 .create = bridge_create,
54 .config_init = bridge_config_init,
56 .dump_status = bridge_dump_status,
61 device_state_cb set_state;
63 struct bridge_config config;
64 struct blob_attr *ifnames;
67 struct list_head members;
71 struct bridge_member {
72 struct list_head list;
73 struct bridge_state *bst;
74 struct device_user dev;
79 bridge_disable_member(struct bridge_member *bm)
81 struct bridge_state *bst = bm->bst;
86 system_bridge_delif(&bst->dev, bm->dev.dev);
87 device_release(&bm->dev);
93 bridge_enable_member(struct bridge_member *bm)
95 struct bridge_state *bst = bm->bst;
101 ret = device_claim(&bm->dev);
105 ret = system_bridge_addif(&bst->dev, bm->dev.dev);
118 bridge_member_cb(struct device_user *dev, enum device_event ev)
120 struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
121 struct bridge_state *bst = bm->bst;
125 assert(!bm->present);
131 bridge_enable_member(bm);
132 else if (bst->n_present == 1)
133 device_set_present(&bst->dev, true);
136 case DEV_EVENT_REMOVE:
141 bridge_disable_member(bm);
144 bm->bst->n_present--;
145 if (bst->n_present == 0)
146 device_set_present(&bst->dev, false);
155 bridge_set_down(struct bridge_state *bst)
157 struct bridge_member *bm;
159 bst->set_state(&bst->dev, false);
161 list_for_each_entry(bm, &bst->members, list)
162 bridge_disable_member(bm);
164 system_bridge_delbr(&bst->dev);
170 bridge_set_up(struct bridge_state *bst)
172 struct bridge_member *bm;
178 ret = system_bridge_addbr(&bst->dev, &bst->config);
182 list_for_each_entry(bm, &bst->members, list)
183 bridge_enable_member(bm);
185 if (!bst->n_present) {
186 /* initialization of all member interfaces failed */
187 system_bridge_delbr(&bst->dev);
188 device_set_present(&bst->dev, false);
192 ret = bst->set_state(&bst->dev, true);
194 bridge_set_down(bst);
201 bridge_set_state(struct device *dev, bool up)
203 struct bridge_state *bst;
205 bst = container_of(dev, struct bridge_state, dev);
208 return bridge_set_up(bst);
210 return bridge_set_down(bst);
213 static struct bridge_member *
214 bridge_create_member(struct bridge_state *bst, struct device *dev)
216 struct bridge_member *bm;
218 bm = calloc(1, sizeof(*bm));
220 bm->dev.cb = bridge_member_cb;
221 device_add_user(&bm->dev, dev);
223 list_add_tail(&bm->list, &bst->members);
226 bridge_enable_member(bm);
232 bridge_free_member(struct bridge_member *bm)
235 bridge_member_cb(&bm->dev, DEV_EVENT_REMOVE);
236 bm->bst->n_present--;
237 if (bm->bst->dev.active)
238 bridge_disable_member(bm);
242 device_remove_user(&bm->dev);
247 bridge_add_member(struct bridge_state *bst, const char *name)
251 dev = device_get(name, true);
255 bridge_create_member(bst, dev);
259 bridge_hotplug_add(struct device *dev, struct device *member)
261 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
263 bridge_create_member(bst, member);
269 bridge_hotplug_del(struct device *dev, struct device *member)
271 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
272 struct bridge_member *bm;
274 list_for_each_entry(bm, &bst->members, list) {
275 if (bm->dev.dev != member)
278 bridge_free_member(bm);
285 static const struct device_hotplug_ops bridge_ops = {
286 .add = bridge_hotplug_add,
287 .del = bridge_hotplug_del
291 bridge_free(struct device *dev)
293 struct bridge_state *bst;
294 struct bridge_member *bm;
297 bst = container_of(dev, struct bridge_state, dev);
298 while (!list_empty(&bst->members)) {
299 bm = list_first_entry(&bst->members, struct bridge_member, list);
300 bridge_free_member(bm);
306 bridge_dump_status(struct device *dev, struct blob_buf *b)
308 struct bridge_state *bst;
309 struct bridge_member *bm;
312 bst = container_of(dev, struct bridge_state, dev);
314 list = blobmsg_open_array(b, "bridge-members");
315 list_for_each_entry(bm, &bst->members, list) {
316 blobmsg_add_string(b, NULL, bm->dev.dev->ifname);
318 blobmsg_close_array(b, list);
322 bridge_config_init(struct device *dev)
324 struct bridge_state *bst;
325 struct blob_attr *cur;
328 bst = container_of(dev, struct bridge_state, dev);
329 blobmsg_for_each_attr(cur, bst->ifnames, rem) {
330 bridge_add_member(bst, blobmsg_data(cur));
335 bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
337 struct bridge_config *cfg = &bst->config;
338 struct blob_attr *cur;
342 cfg->forward_delay = 1;
344 if ((cur = tb[BRIDGE_ATTR_STP]))
345 cfg->stp = blobmsg_get_bool(cur);
347 if ((cur = tb[BRIDGE_ATTR_FORWARD_DELAY]))
348 cfg->forward_delay = blobmsg_get_u32(cur);
350 if ((cur = tb[BRIDGE_ATTR_AGEING_TIME])) {
351 cfg->ageing_time = blobmsg_get_u32(cur);
352 cfg->flags |= BRIDGE_OPT_AGEING_TIME;
355 if ((cur = tb[BRIDGE_ATTR_HELLO_TIME])) {
356 cfg->hello_time = blobmsg_get_u32(cur);
357 cfg->flags |= BRIDGE_OPT_HELLO_TIME;
360 if ((cur = tb[BRIDGE_ATTR_MAX_AGE])) {
361 cfg->max_age = blobmsg_get_u32(cur);
362 cfg->flags |= BRIDGE_OPT_MAX_AGE;
366 static struct device *
367 bridge_create(struct blob_attr *attr)
369 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
370 struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
371 struct bridge_state *bst;
372 struct device *dev = NULL;
375 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
376 blob_data(attr), blob_len(attr));
377 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, tb_br,
378 blob_data(attr), blob_len(attr));
380 if (!tb_dev[DEV_ATTR_NAME])
383 if (!tb_br[BRIDGE_ATTR_IFNAME])
386 name = blobmsg_data(tb_dev[DEV_ATTR_NAME]);
388 bst = calloc(1, sizeof(*bst));
393 device_init(dev, &bridge_device_type, name);
394 device_init_settings(dev, tb_dev);
395 dev->config_pending = true;
396 bst->ifnames = tb_br[BRIDGE_ATTR_IFNAME];
397 bridge_apply_settings(bst, tb_br);
399 bst->set_state = dev->set_state;
400 dev->set_state = bridge_set_state;
402 dev->hotplug_ops = &bridge_ops;
404 INIT_LIST_HEAD(&bst->members);