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;
69 struct list_head members;
73 struct bridge_member {
74 struct list_head list;
75 struct bridge_state *bst;
76 struct device_user dev;
80 static void bridge_free_member(struct bridge_member *bm);
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);
122 bridge_member_cb(struct device_user *dev, enum device_event ev)
124 struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
125 struct bridge_state *bst = bm->bst;
129 assert(!bm->present);
135 bridge_enable_member(bm);
136 else if (bst->n_present == 1)
137 device_set_present(&bst->dev, true);
140 case DEV_EVENT_REMOVE:
145 bridge_disable_member(bm);
148 bm->bst->n_present--;
149 if (bst->n_present == 0)
150 device_set_present(&bst->dev, false);
153 bridge_free_member(bm);
161 bridge_set_down(struct bridge_state *bst)
163 struct bridge_member *bm;
165 bst->set_state(&bst->dev, false);
167 list_for_each_entry(bm, &bst->members, list)
168 bridge_disable_member(bm);
170 system_bridge_delbr(&bst->dev);
176 bridge_set_up(struct bridge_state *bst)
178 struct bridge_member *bm;
184 ret = system_bridge_addbr(&bst->dev, &bst->config);
188 list_for_each_entry(bm, &bst->members, list)
189 bridge_enable_member(bm);
191 if (!bst->n_present) {
192 /* initialization of all member interfaces failed */
193 system_bridge_delbr(&bst->dev);
194 device_set_present(&bst->dev, false);
198 ret = bst->set_state(&bst->dev, true);
200 bridge_set_down(bst);
207 bridge_set_state(struct device *dev, bool up)
209 struct bridge_state *bst;
211 bst = container_of(dev, struct bridge_state, dev);
214 return bridge_set_up(bst);
216 return bridge_set_down(bst);
219 static struct bridge_member *
220 bridge_create_member(struct bridge_state *bst, struct device *dev, bool hotplug)
222 struct bridge_member *bm;
224 bm = calloc(1, sizeof(*bm));
226 bm->dev.cb = bridge_member_cb;
227 device_add_user(&bm->dev, dev);
228 bm->dev.hotplug = hotplug;
230 list_add_tail(&bm->list, &bst->members);
233 bridge_enable_member(bm);
239 bridge_free_member(struct bridge_member *bm)
242 bridge_member_cb(&bm->dev, DEV_EVENT_REMOVE);
243 bm->bst->n_present--;
244 if (bm->bst->dev.active)
245 bridge_disable_member(bm);
249 device_remove_user(&bm->dev);
254 bridge_add_member(struct bridge_state *bst, const char *name)
258 dev = device_get(name, true);
262 bridge_create_member(bst, dev, false);
266 bridge_hotplug_add(struct device *dev, struct device *member)
268 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
270 bridge_create_member(bst, member, true);
276 bridge_hotplug_del(struct device *dev, struct device *member)
278 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
279 struct bridge_member *bm;
281 list_for_each_entry(bm, &bst->members, list) {
282 if (bm->dev.dev != member)
285 bridge_free_member(bm);
292 static const struct device_hotplug_ops bridge_ops = {
293 .add = bridge_hotplug_add,
294 .del = bridge_hotplug_del
298 bridge_free(struct device *dev)
300 struct bridge_state *bst;
301 struct bridge_member *bm;
304 bst = container_of(dev, struct bridge_state, dev);
305 while (!list_empty(&bst->members)) {
306 bm = list_first_entry(&bst->members, struct bridge_member, list);
307 bridge_free_member(bm);
313 bridge_dump_info(struct device *dev, struct blob_buf *b)
315 struct bridge_state *bst;
316 struct bridge_member *bm;
319 bst = container_of(dev, struct bridge_state, dev);
321 list = blobmsg_open_array(b, "bridge-members");
322 list_for_each_entry(bm, &bst->members, list) {
323 blobmsg_add_string(b, NULL, bm->dev.dev->ifname);
325 blobmsg_close_array(b, list);
329 bridge_config_init(struct device *dev)
331 struct bridge_state *bst;
332 struct blob_attr *cur;
335 bst = container_of(dev, struct bridge_state, dev);
336 blobmsg_for_each_attr(cur, bst->ifnames, rem) {
337 bridge_add_member(bst, blobmsg_data(cur));
342 bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
344 struct bridge_config *cfg = &bst->config;
345 struct blob_attr *cur;
349 cfg->forward_delay = 1;
350 cfg->igmp_snoop = true;
352 if ((cur = tb[BRIDGE_ATTR_STP]))
353 cfg->stp = blobmsg_get_bool(cur);
355 if ((cur = tb[BRIDGE_ATTR_FORWARD_DELAY]))
356 cfg->forward_delay = blobmsg_get_u32(cur);
358 if ((cur = tb[BRIDGE_ATTR_IGMP_SNOOP]))
359 cfg->igmp_snoop = blobmsg_get_bool(cur);
361 if ((cur = tb[BRIDGE_ATTR_AGEING_TIME])) {
362 cfg->ageing_time = blobmsg_get_u32(cur);
363 cfg->flags |= BRIDGE_OPT_AGEING_TIME;
366 if ((cur = tb[BRIDGE_ATTR_HELLO_TIME])) {
367 cfg->hello_time = blobmsg_get_u32(cur);
368 cfg->flags |= BRIDGE_OPT_HELLO_TIME;
371 if ((cur = tb[BRIDGE_ATTR_MAX_AGE])) {
372 cfg->max_age = blobmsg_get_u32(cur);
373 cfg->flags |= BRIDGE_OPT_MAX_AGE;
377 static struct device *
378 bridge_create(const char *name, struct blob_attr *attr)
380 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
381 struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
382 struct bridge_state *bst;
383 struct device *dev = NULL;
385 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
386 blob_data(attr), blob_len(attr));
387 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, tb_br,
388 blob_data(attr), blob_len(attr));
390 if (!tb_br[BRIDGE_ATTR_IFNAME])
393 bst = calloc(1, sizeof(*bst));
398 device_init(dev, &bridge_device_type, name);
399 device_init_settings(dev, tb_dev);
400 dev->config_pending = true;
401 bst->ifnames = tb_br[BRIDGE_ATTR_IFNAME];
402 bridge_apply_settings(bst, tb_br);
404 bst->set_state = dev->set_state;
405 dev->set_state = bridge_set_state;
407 dev->hotplug_ops = &bridge_ops;
409 INIT_LIST_HEAD(&bst->members);