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_free(struct device
*dev
);
38 static void bridge_dump_status(struct device
*dev
, struct blob_buf
*b
);
40 const struct device_type bridge_device_type
= {
42 .config_params
= &bridge_attr_list
,
44 .create
= bridge_create
,
46 .dump_status
= bridge_dump_status
,
51 device_state_cb set_state
;
55 struct list_head members
;
59 struct bridge_member
{
60 struct list_head list
;
61 struct bridge_state
*bst
;
62 struct device_user dev
;
67 bridge_disable_member(struct bridge_member
*bm
)
69 struct bridge_state
*bst
= bm
->bst
;
74 system_bridge_delif(&bst
->dev
, bm
->dev
.dev
);
75 device_release(&bm
->dev
);
81 bridge_enable_member(struct bridge_member
*bm
)
83 struct bridge_state
*bst
= bm
->bst
;
89 ret
= device_claim(&bm
->dev
);
93 ret
= system_bridge_addif(&bst
->dev
, bm
->dev
.dev
);
106 bridge_member_cb(struct device_user
*dev
, enum device_event ev
)
108 struct bridge_member
*bm
= container_of(dev
, struct bridge_member
, dev
);
109 struct bridge_state
*bst
= bm
->bst
;
113 assert(!bm
->present
);
119 bridge_enable_member(bm
);
120 else if (bst
->n_present
== 1)
121 device_set_present(&bst
->dev
, true);
124 case DEV_EVENT_REMOVE
:
129 bridge_disable_member(bm
);
132 bm
->bst
->n_present
--;
133 if (bst
->n_present
== 0)
134 device_set_present(&bst
->dev
, false);
143 bridge_set_down(struct bridge_state
*bst
)
145 struct bridge_member
*bm
;
147 bst
->set_state(&bst
->dev
, false);
149 list_for_each_entry(bm
, &bst
->members
, list
)
150 bridge_disable_member(bm
);
152 system_bridge_delbr(&bst
->dev
);
158 bridge_set_up(struct bridge_state
*bst
)
160 struct bridge_member
*bm
;
166 ret
= system_bridge_addbr(&bst
->dev
);
170 list_for_each_entry(bm
, &bst
->members
, list
)
171 bridge_enable_member(bm
);
173 if (!bst
->n_present
) {
174 /* initialization of all member interfaces failed */
175 system_bridge_delbr(&bst
->dev
);
176 device_set_present(&bst
->dev
, false);
180 ret
= bst
->set_state(&bst
->dev
, true);
182 bridge_set_down(bst
);
189 bridge_set_state(struct device
*dev
, bool up
)
191 struct bridge_state
*bst
;
193 bst
= container_of(dev
, struct bridge_state
, dev
);
196 return bridge_set_up(bst
);
198 return bridge_set_down(bst
);
201 static struct bridge_member
*
202 bridge_create_member(struct bridge_state
*bst
, struct device
*dev
)
204 struct bridge_member
*bm
;
206 bm
= calloc(1, sizeof(*bm
));
208 bm
->dev
.cb
= bridge_member_cb
;
209 device_add_user(&bm
->dev
, dev
);
211 list_add_tail(&bm
->list
, &bst
->members
);
214 bridge_enable_member(bm
);
220 bridge_free_member(struct bridge_member
*bm
)
223 bridge_member_cb(&bm
->dev
, DEV_EVENT_REMOVE
);
224 bm
->bst
->n_present
--;
225 if (bm
->bst
->dev
.active
)
226 bridge_disable_member(bm
);
230 device_remove_user(&bm
->dev
);
235 bridge_add_member(struct bridge_state
*bst
, const char *name
)
239 dev
= device_get(name
, true);
243 bridge_create_member(bst
, dev
);
247 bridge_hotplug_add(struct device
*dev
, struct device
*member
)
249 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
251 bridge_create_member(bst
, member
);
257 bridge_hotplug_del(struct device
*dev
, struct device
*member
)
259 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
260 struct bridge_member
*bm
;
262 list_for_each_entry(bm
, &bst
->members
, list
) {
263 if (bm
->dev
.dev
!= member
)
266 bridge_free_member(bm
);
273 static const struct device_hotplug_ops bridge_ops
= {
274 .add
= bridge_hotplug_add
,
275 .del
= bridge_hotplug_del
279 bridge_free(struct device
*dev
)
281 struct bridge_state
*bst
;
282 struct bridge_member
*bm
;
284 bst
= container_of(dev
, struct bridge_state
, dev
);
285 while (!list_empty(&bst
->members
)) {
286 bm
= list_first_entry(&bst
->members
, struct bridge_member
, list
);
287 bridge_free_member(bm
);
293 bridge_dump_status(struct device
*dev
, struct blob_buf
*b
)
295 struct bridge_state
*bst
;
296 struct bridge_member
*bm
;
299 bst
= container_of(dev
, struct bridge_state
, dev
);
301 list
= blobmsg_open_array(b
, "bridge-members");
302 list_for_each_entry(bm
, &bst
->members
, list
) {
303 blobmsg_add_string(b
, NULL
, bm
->dev
.dev
->ifname
);
305 blobmsg_close_array(b
, list
);
308 static struct device
*
309 bridge_create(struct blob_attr
*attr
)
311 struct blob_attr
*tb_dev
[__DEV_ATTR_MAX
];
312 struct blob_attr
*tb_br
[__BRIDGE_ATTR_MAX
];
313 struct blob_attr
*cur
;
314 struct bridge_state
*bst
;
315 struct device
*dev
= NULL
;
319 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, tb_dev
,
320 blob_data(attr
), blob_len(attr
));
321 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, tb_br
,
322 blob_data(attr
), blob_len(attr
));
324 if (!tb_dev
[DEV_ATTR_NAME
])
327 if (!tb_br
[BRIDGE_ATTR_IFNAME
])
330 name
= blobmsg_data(tb_dev
[DEV_ATTR_NAME
]);
332 bst
= calloc(1, sizeof(*bst
));
337 device_init(dev
, &bridge_device_type
, name
);
338 device_init_settings(dev
, tb_dev
);
340 bst
->set_state
= dev
->set_state
;
341 dev
->set_state
= bridge_set_state
;
343 dev
->hotplug_ops
= &bridge_ops
;
345 INIT_LIST_HEAD(&bst
->members
);
347 blobmsg_for_each_attr(cur
, tb_br
[BRIDGE_ATTR_IFNAME
], rem
) {
348 bridge_add_member(bst
, blobmsg_data(cur
));