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;
81 bridge_disable_member(struct bridge_member *bm)
83 struct bridge_state *bst = bm->bst;
88 system_bridge_delif(&bst->dev, bm->dev.dev);
89 device_release(&bm->dev);
95 bridge_enable_member(struct bridge_member *bm)
97 struct bridge_state *bst = bm->bst;
103 ret = device_claim(&bm->dev);
107 ret = system_bridge_addif(&bst->dev, bm->dev.dev);
120 bridge_member_cb(struct device_user *dev, enum device_event ev)
122 struct bridge_member *bm = container_of(dev, struct bridge_member, dev);
123 struct bridge_state *bst = bm->bst;
127 assert(!bm->present);
133 bridge_enable_member(bm);
134 else if (bst->n_present == 1)
135 device_set_present(&bst->dev, true);
138 case DEV_EVENT_REMOVE:
143 bridge_disable_member(bm);
146 bm->bst->n_present--;
147 if (bst->n_present == 0)
148 device_set_present(&bst->dev, false);
157 bridge_set_down(struct bridge_state *bst)
159 struct bridge_member *bm;
161 bst->set_state(&bst->dev, false);
163 list_for_each_entry(bm, &bst->members, list)
164 bridge_disable_member(bm);
166 system_bridge_delbr(&bst->dev);
172 bridge_set_up(struct bridge_state *bst)
174 struct bridge_member *bm;
180 ret = system_bridge_addbr(&bst->dev, &bst->config);
184 list_for_each_entry(bm, &bst->members, list)
185 bridge_enable_member(bm);
187 if (!bst->n_present) {
188 /* initialization of all member interfaces failed */
189 system_bridge_delbr(&bst->dev);
190 device_set_present(&bst->dev, false);
194 ret = bst->set_state(&bst->dev, true);
196 bridge_set_down(bst);
203 bridge_set_state(struct device *dev, bool up)
205 struct bridge_state *bst;
207 bst = container_of(dev, struct bridge_state, dev);
210 return bridge_set_up(bst);
212 return bridge_set_down(bst);
215 static struct bridge_member *
216 bridge_create_member(struct bridge_state *bst, struct device *dev)
218 struct bridge_member *bm;
220 bm = calloc(1, sizeof(*bm));
222 bm->dev.cb = bridge_member_cb;
223 device_add_user(&bm->dev, dev);
225 list_add_tail(&bm->list, &bst->members);
228 bridge_enable_member(bm);
234 bridge_free_member(struct bridge_member *bm)
237 bridge_member_cb(&bm->dev, DEV_EVENT_REMOVE);
238 bm->bst->n_present--;
239 if (bm->bst->dev.active)
240 bridge_disable_member(bm);
244 device_remove_user(&bm->dev);
249 bridge_add_member(struct bridge_state *bst, const char *name)
253 dev = device_get(name, true);
257 bridge_create_member(bst, dev);
261 bridge_hotplug_add(struct device *dev, struct device *member)
263 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
265 bridge_create_member(bst, member);
271 bridge_hotplug_del(struct device *dev, struct device *member)
273 struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
274 struct bridge_member *bm;
276 list_for_each_entry(bm, &bst->members, list) {
277 if (bm->dev.dev != member)
280 bridge_free_member(bm);
287 static const struct device_hotplug_ops bridge_ops = {
288 .add = bridge_hotplug_add,
289 .del = bridge_hotplug_del
293 bridge_free(struct device *dev)
295 struct bridge_state *bst;
296 struct bridge_member *bm;
299 bst = container_of(dev, struct bridge_state, dev);
300 while (!list_empty(&bst->members)) {
301 bm = list_first_entry(&bst->members, struct bridge_member, list);
302 bridge_free_member(bm);
308 bridge_dump_info(struct device *dev, struct blob_buf *b)
310 struct bridge_state *bst;
311 struct bridge_member *bm;
314 bst = container_of(dev, struct bridge_state, dev);
316 list = blobmsg_open_array(b, "bridge-members");
317 list_for_each_entry(bm, &bst->members, list) {
318 blobmsg_add_string(b, NULL, bm->dev.dev->ifname);
320 blobmsg_close_array(b, list);
324 bridge_config_init(struct device *dev)
326 struct bridge_state *bst;
327 struct blob_attr *cur;
330 bst = container_of(dev, struct bridge_state, dev);
331 blobmsg_for_each_attr(cur, bst->ifnames, rem) {
332 bridge_add_member(bst, blobmsg_data(cur));
337 bridge_apply_settings(struct bridge_state *bst, struct blob_attr **tb)
339 struct bridge_config *cfg = &bst->config;
340 struct blob_attr *cur;
344 cfg->forward_delay = 1;
345 cfg->igmp_snoop = true;
347 if ((cur = tb[BRIDGE_ATTR_STP]))
348 cfg->stp = blobmsg_get_bool(cur);
350 if ((cur = tb[BRIDGE_ATTR_FORWARD_DELAY]))
351 cfg->forward_delay = blobmsg_get_u32(cur);
353 if ((cur = tb[BRIDGE_ATTR_IGMP_SNOOP]))
354 cfg->igmp_snoop = blobmsg_get_bool(cur);
356 if ((cur = tb[BRIDGE_ATTR_AGEING_TIME])) {
357 cfg->ageing_time = blobmsg_get_u32(cur);
358 cfg->flags |= BRIDGE_OPT_AGEING_TIME;
361 if ((cur = tb[BRIDGE_ATTR_HELLO_TIME])) {
362 cfg->hello_time = blobmsg_get_u32(cur);
363 cfg->flags |= BRIDGE_OPT_HELLO_TIME;
366 if ((cur = tb[BRIDGE_ATTR_MAX_AGE])) {
367 cfg->max_age = blobmsg_get_u32(cur);
368 cfg->flags |= BRIDGE_OPT_MAX_AGE;
372 static struct device *
373 bridge_create(const char *name, struct blob_attr *attr)
375 struct blob_attr *tb_dev[__DEV_ATTR_MAX];
376 struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
377 struct bridge_state *bst;
378 struct device *dev = NULL;
380 blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, tb_dev,
381 blob_data(attr), blob_len(attr));
382 blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, tb_br,
383 blob_data(attr), blob_len(attr));
385 if (!tb_br[BRIDGE_ATTR_IFNAME])
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);