2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
22 #include "interface.h"
28 BRIDGE_ATTR_FORWARD_DELAY
,
29 BRIDGE_ATTR_IGMP_SNOOP
,
30 BRIDGE_ATTR_AGEING_TIME
,
31 BRIDGE_ATTR_HELLO_TIME
,
36 static const struct blobmsg_policy bridge_attrs
[__BRIDGE_ATTR_MAX
] = {
37 [BRIDGE_ATTR_IFNAME
] = { "ifname", BLOBMSG_TYPE_ARRAY
},
38 [BRIDGE_ATTR_STP
] = { "stp", BLOBMSG_TYPE_BOOL
},
39 [BRIDGE_ATTR_FORWARD_DELAY
] = { "forward_delay", BLOBMSG_TYPE_INT32
},
40 [BRIDGE_ATTR_AGEING_TIME
] = { "ageing_time", BLOBMSG_TYPE_INT32
},
41 [BRIDGE_ATTR_HELLO_TIME
] = { "hello_time", BLOBMSG_TYPE_INT32
},
42 [BRIDGE_ATTR_MAX_AGE
] = { "max_age", BLOBMSG_TYPE_INT32
},
43 [BRIDGE_ATTR_IGMP_SNOOP
] = { "igmp_snooping", BLOBMSG_TYPE_BOOL
},
46 static const union config_param_info bridge_attr_info
[__BRIDGE_ATTR_MAX
] = {
47 [BRIDGE_ATTR_IFNAME
] = { .type
= BLOBMSG_TYPE_STRING
},
50 static const struct config_param_list bridge_attr_list
= {
51 .n_params
= __BRIDGE_ATTR_MAX
,
52 .params
= bridge_attrs
,
53 .info
= bridge_attr_info
,
56 .next
= { &device_attr_list
},
59 static struct device
*bridge_create(const char *name
, struct blob_attr
*attr
);
60 static void bridge_config_init(struct device
*dev
);
61 static void bridge_free(struct device
*dev
);
62 static void bridge_dump_info(struct device
*dev
, struct blob_buf
*b
);
64 bridge_reload(struct device
*dev
, struct blob_attr
*attr
);
66 const struct device_type bridge_device_type
= {
68 .config_params
= &bridge_attr_list
,
70 .create
= bridge_create
,
71 .config_init
= bridge_config_init
,
72 .reload
= bridge_reload
,
74 .dump_info
= bridge_dump_info
,
79 device_state_cb set_state
;
81 struct blob_attr
*config_data
;
82 struct bridge_config config
;
83 struct blob_attr
*ifnames
;
87 struct bridge_member
*primary_port
;
88 struct vlist_tree members
;
92 struct bridge_member
{
93 struct vlist_node node
;
94 struct bridge_state
*bst
;
95 struct device_user dev
;
101 bridge_reset_primary(struct bridge_state
*bst
)
103 struct bridge_member
*bm
;
105 bst
->primary_port
= NULL
;
106 vlist_for_each_element(&bst
->members
, bm
, node
) {
110 bst
->primary_port
= bm
;
111 memcpy(bst
->dev
.settings
.macaddr
, bm
->dev
.dev
->settings
.macaddr
, 6);
112 bst
->dev
.settings
.flags
|= DEV_OPT_MACADDR
;
118 bridge_disable_member(struct bridge_member
*bm
)
120 struct bridge_state
*bst
= bm
->bst
;
125 system_bridge_delif(&bst
->dev
, bm
->dev
.dev
);
126 device_release(&bm
->dev
);
132 bridge_enable_member(struct bridge_member
*bm
)
134 struct bridge_state
*bst
= bm
->bst
;
140 ret
= device_claim(&bm
->dev
);
144 ret
= system_bridge_addif(&bst
->dev
, bm
->dev
.dev
);
146 D(DEVICE
, "Bridge device %s could not be added\n", bm
->dev
.dev
->ifname
);
159 bridge_remove_member(struct bridge_member
*bm
)
161 struct bridge_state
*bst
= bm
->bst
;
166 if (bm
== bst
->primary_port
);
167 bridge_reset_primary(bst
);
170 bridge_disable_member(bm
);
173 bm
->bst
->n_present
--;
175 bst
->force_active
= false;
176 if (bst
->n_present
== 0)
177 device_set_present(&bst
->dev
, false);
181 bridge_member_cb(struct device_user
*dev
, enum device_event ev
)
183 struct bridge_member
*bm
= container_of(dev
, struct bridge_member
, dev
);
184 struct bridge_state
*bst
= bm
->bst
;
188 assert(!bm
->present
);
194 bridge_enable_member(bm
);
195 else if (bst
->n_present
== 1)
196 device_set_present(&bst
->dev
, true);
199 case DEV_EVENT_REMOVE
:
201 vlist_delete(&bst
->members
, &bm
->node
);
206 bridge_remove_member(bm
);
215 bridge_set_down(struct bridge_state
*bst
)
217 struct bridge_member
*bm
;
219 bst
->set_state(&bst
->dev
, false);
221 vlist_for_each_element(&bst
->members
, bm
, node
)
222 bridge_disable_member(bm
);
224 system_bridge_delbr(&bst
->dev
);
230 bridge_set_up(struct bridge_state
*bst
)
232 struct bridge_member
*bm
;
235 if (!bst
->force_active
&& !bst
->n_present
)
238 ret
= system_bridge_addbr(&bst
->dev
, &bst
->config
);
242 vlist_for_each_element(&bst
->members
, bm
, node
)
243 bridge_enable_member(bm
);
245 if (!bst
->force_active
&& !bst
->n_present
) {
246 /* initialization of all member interfaces failed */
247 system_bridge_delbr(&bst
->dev
);
248 device_set_present(&bst
->dev
, false);
252 bridge_reset_primary(bst
);
253 ret
= bst
->set_state(&bst
->dev
, true);
255 bridge_set_down(bst
);
262 bridge_set_state(struct device
*dev
, bool up
)
264 struct bridge_state
*bst
;
266 bst
= container_of(dev
, struct bridge_state
, dev
);
269 return bridge_set_up(bst
);
271 return bridge_set_down(bst
);
274 static struct bridge_member
*
275 bridge_create_member(struct bridge_state
*bst
, struct device
*dev
, bool hotplug
)
277 struct bridge_member
*bm
;
279 bm
= calloc(1, sizeof(*bm
) + strlen(dev
->ifname
) + 1);
281 bm
->dev
.cb
= bridge_member_cb
;
282 bm
->dev
.hotplug
= hotplug
;
283 strcpy(bm
->name
, dev
->ifname
);
285 vlist_add(&bst
->members
, &bm
->node
, bm
->name
);
287 bm
->node
.version
= -1;
293 bridge_member_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
294 struct vlist_node
*node_old
)
296 struct bridge_member
*bm
;
300 bm
= container_of(node_new
, struct bridge_member
, node
);
309 device_add_user(&bm
->dev
, dev
);
314 bm
= container_of(node_old
, struct bridge_member
, node
);
315 bridge_remove_member(bm
);
316 device_remove_user(&bm
->dev
);
323 bridge_add_member(struct bridge_state
*bst
, const char *name
)
327 dev
= device_get(name
, true);
331 bridge_create_member(bst
, dev
, false);
335 bridge_hotplug_add(struct device
*dev
, struct device
*member
)
337 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
339 bridge_create_member(bst
, member
, true);
345 bridge_hotplug_del(struct device
*dev
, struct device
*member
)
347 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
348 struct bridge_member
*bm
;
350 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
352 return UBUS_STATUS_NOT_FOUND
;
354 vlist_delete(&bst
->members
, &bm
->node
);
359 bridge_hotplug_prepare(struct device
*dev
)
361 struct bridge_state
*bst
;
363 bst
= container_of(dev
, struct bridge_state
, dev
);
364 bst
->force_active
= true;
365 device_set_present(&bst
->dev
, true);
370 static const struct device_hotplug_ops bridge_ops
= {
371 .prepare
= bridge_hotplug_prepare
,
372 .add
= bridge_hotplug_add
,
373 .del
= bridge_hotplug_del
377 bridge_free(struct device
*dev
)
379 struct bridge_state
*bst
;
381 bst
= container_of(dev
, struct bridge_state
, dev
);
382 vlist_flush_all(&bst
->members
);
387 bridge_dump_info(struct device
*dev
, struct blob_buf
*b
)
389 struct bridge_state
*bst
;
390 struct bridge_member
*bm
;
393 bst
= container_of(dev
, struct bridge_state
, dev
);
395 system_if_dump_info(dev
, b
);
396 list
= blobmsg_open_array(b
, "bridge-members");
398 vlist_for_each_element(&bst
->members
, bm
, node
)
399 blobmsg_add_string(b
, NULL
, bm
->dev
.dev
->ifname
);
401 blobmsg_close_array(b
, list
);
405 bridge_config_init(struct device
*dev
)
407 struct bridge_state
*bst
;
408 struct blob_attr
*cur
;
411 bst
= container_of(dev
, struct bridge_state
, dev
);
416 vlist_update(&bst
->members
);
417 blobmsg_for_each_attr(cur
, bst
->ifnames
, rem
) {
418 bridge_add_member(bst
, blobmsg_data(cur
));
420 vlist_flush(&bst
->members
);
424 bridge_apply_settings(struct bridge_state
*bst
, struct blob_attr
**tb
)
426 struct bridge_config
*cfg
= &bst
->config
;
427 struct blob_attr
*cur
;
431 cfg
->forward_delay
= 2;
432 cfg
->igmp_snoop
= true;
434 if ((cur
= tb
[BRIDGE_ATTR_STP
]))
435 cfg
->stp
= blobmsg_get_bool(cur
);
437 if ((cur
= tb
[BRIDGE_ATTR_FORWARD_DELAY
]))
438 cfg
->forward_delay
= blobmsg_get_u32(cur
);
440 if ((cur
= tb
[BRIDGE_ATTR_IGMP_SNOOP
]))
441 cfg
->igmp_snoop
= blobmsg_get_bool(cur
);
443 if ((cur
= tb
[BRIDGE_ATTR_AGEING_TIME
])) {
444 cfg
->ageing_time
= blobmsg_get_u32(cur
);
445 cfg
->flags
|= BRIDGE_OPT_AGEING_TIME
;
448 if ((cur
= tb
[BRIDGE_ATTR_HELLO_TIME
])) {
449 cfg
->hello_time
= blobmsg_get_u32(cur
);
450 cfg
->flags
|= BRIDGE_OPT_HELLO_TIME
;
453 if ((cur
= tb
[BRIDGE_ATTR_MAX_AGE
])) {
454 cfg
->max_age
= blobmsg_get_u32(cur
);
455 cfg
->flags
|= BRIDGE_OPT_MAX_AGE
;
460 bridge_reload(struct device
*dev
, struct blob_attr
*attr
)
462 struct blob_attr
*tb_dev
[__DEV_ATTR_MAX
];
463 struct blob_attr
*tb_br
[__BRIDGE_ATTR_MAX
];
464 enum dev_change_type ret
= DEV_CONFIG_APPLIED
;
466 struct bridge_state
*bst
;
468 BUILD_BUG_ON(sizeof(diff
) < __BRIDGE_ATTR_MAX
/ 8);
469 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
471 bst
= container_of(dev
, struct bridge_state
, dev
);
473 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, tb_dev
,
474 blob_data(attr
), blob_len(attr
));
475 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, tb_br
,
476 blob_data(attr
), blob_len(attr
));
478 bst
->ifnames
= tb_br
[BRIDGE_ATTR_IFNAME
];
479 device_init_settings(dev
, tb_dev
);
480 bridge_apply_settings(bst
, tb_br
);
482 if (bst
->config_data
) {
483 struct blob_attr
*otb_dev
[__DEV_ATTR_MAX
];
484 struct blob_attr
*otb_br
[__BRIDGE_ATTR_MAX
];
486 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb_dev
,
487 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
490 config_diff(tb_dev
, otb_dev
, &device_attr_list
, &diff
);
491 if (diff
& ~(1 << DEV_ATTR_IFNAME
))
492 ret
= DEV_CONFIG_RESTART
;
494 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, otb_br
,
495 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
498 config_diff(tb_br
, otb_br
, &bridge_attr_list
, &diff
);
499 if (diff
& ~(1 << BRIDGE_ATTR_IFNAME
))
500 ret
= DEV_CONFIG_RESTART
;
502 bridge_config_init(dev
);
505 bst
->config_data
= attr
;
509 static struct device
*
510 bridge_create(const char *name
, struct blob_attr
*attr
)
512 struct bridge_state
*bst
;
513 struct device
*dev
= NULL
;
515 bst
= calloc(1, sizeof(*bst
));
520 device_init(dev
, &bridge_device_type
, name
);
521 dev
->config_pending
= true;
523 bst
->set_state
= dev
->set_state
;
524 dev
->set_state
= bridge_set_state
;
526 dev
->hotplug_ops
= &bridge_ops
;
528 vlist_init(&bst
->members
, avl_strcmp
, bridge_member_update
);
529 bst
->members
.keep_old
= true;
530 bridge_reload(dev
, attr
);