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 if (!bst
->primary_port
&&
106 (bst
->dev
.settings
.flags
& DEV_OPT_MACADDR
))
109 bst
->primary_port
= NULL
;
110 bst
->dev
.settings
.flags
&= ~DEV_OPT_MACADDR
;
111 vlist_for_each_element(&bst
->members
, bm
, node
) {
115 bst
->primary_port
= bm
;
116 memcpy(bst
->dev
.settings
.macaddr
, bm
->dev
.dev
->settings
.macaddr
, 6);
117 bst
->dev
.settings
.flags
|= DEV_OPT_MACADDR
;
123 bridge_disable_member(struct bridge_member
*bm
)
125 struct bridge_state
*bst
= bm
->bst
;
130 system_bridge_delif(&bst
->dev
, bm
->dev
.dev
);
131 device_release(&bm
->dev
);
137 bridge_enable_member(struct bridge_member
*bm
)
139 struct bridge_state
*bst
= bm
->bst
;
145 ret
= device_claim(&bm
->dev
);
149 ret
= system_bridge_addif(&bst
->dev
, bm
->dev
.dev
);
151 D(DEVICE
, "Bridge device %s could not be added\n", bm
->dev
.dev
->ifname
);
164 bridge_remove_member(struct bridge_member
*bm
)
166 struct bridge_state
*bst
= bm
->bst
;
171 if (bm
== bst
->primary_port
);
172 bridge_reset_primary(bst
);
175 bridge_disable_member(bm
);
178 bm
->bst
->n_present
--;
180 bst
->force_active
= false;
181 if (bst
->n_present
== 0)
182 device_set_present(&bst
->dev
, false);
186 bridge_member_cb(struct device_user
*dev
, enum device_event ev
)
188 struct bridge_member
*bm
= container_of(dev
, struct bridge_member
, dev
);
189 struct bridge_state
*bst
= bm
->bst
;
193 assert(!bm
->present
);
199 bridge_enable_member(bm
);
200 else if (bst
->n_present
== 1)
201 device_set_present(&bst
->dev
, true);
204 case DEV_EVENT_REMOVE
:
206 vlist_delete(&bst
->members
, &bm
->node
);
211 bridge_remove_member(bm
);
220 bridge_set_down(struct bridge_state
*bst
)
222 struct bridge_member
*bm
;
224 bst
->set_state(&bst
->dev
, false);
226 vlist_for_each_element(&bst
->members
, bm
, node
)
227 bridge_disable_member(bm
);
229 system_bridge_delbr(&bst
->dev
);
235 bridge_set_up(struct bridge_state
*bst
)
237 struct bridge_member
*bm
;
240 if (!bst
->force_active
&& !bst
->n_present
)
243 ret
= system_bridge_addbr(&bst
->dev
, &bst
->config
);
247 vlist_for_each_element(&bst
->members
, bm
, node
)
248 bridge_enable_member(bm
);
250 if (!bst
->force_active
&& !bst
->n_present
) {
251 /* initialization of all member interfaces failed */
252 system_bridge_delbr(&bst
->dev
);
253 device_set_present(&bst
->dev
, false);
257 bridge_reset_primary(bst
);
258 ret
= bst
->set_state(&bst
->dev
, true);
260 bridge_set_down(bst
);
267 bridge_set_state(struct device
*dev
, bool up
)
269 struct bridge_state
*bst
;
271 bst
= container_of(dev
, struct bridge_state
, dev
);
274 return bridge_set_up(bst
);
276 return bridge_set_down(bst
);
279 static struct bridge_member
*
280 bridge_create_member(struct bridge_state
*bst
, struct device
*dev
, bool hotplug
)
282 struct bridge_member
*bm
;
284 bm
= calloc(1, sizeof(*bm
) + strlen(dev
->ifname
) + 1);
286 bm
->dev
.cb
= bridge_member_cb
;
287 bm
->dev
.hotplug
= hotplug
;
288 strcpy(bm
->name
, dev
->ifname
);
290 vlist_add(&bst
->members
, &bm
->node
, bm
->name
);
292 bm
->node
.version
= -1;
298 bridge_member_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
299 struct vlist_node
*node_old
)
301 struct bridge_member
*bm
;
305 bm
= container_of(node_new
, struct bridge_member
, node
);
314 device_add_user(&bm
->dev
, dev
);
319 bm
= container_of(node_old
, struct bridge_member
, node
);
320 bridge_remove_member(bm
);
321 device_remove_user(&bm
->dev
);
328 bridge_add_member(struct bridge_state
*bst
, const char *name
)
332 dev
= device_get(name
, true);
336 bridge_create_member(bst
, dev
, false);
340 bridge_hotplug_add(struct device
*dev
, struct device
*member
)
342 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
344 bridge_create_member(bst
, member
, true);
350 bridge_hotplug_del(struct device
*dev
, struct device
*member
)
352 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
353 struct bridge_member
*bm
;
355 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
357 return UBUS_STATUS_NOT_FOUND
;
359 vlist_delete(&bst
->members
, &bm
->node
);
364 bridge_hotplug_prepare(struct device
*dev
)
366 struct bridge_state
*bst
;
368 bst
= container_of(dev
, struct bridge_state
, dev
);
369 bst
->force_active
= true;
370 device_set_present(&bst
->dev
, true);
375 static const struct device_hotplug_ops bridge_ops
= {
376 .prepare
= bridge_hotplug_prepare
,
377 .add
= bridge_hotplug_add
,
378 .del
= bridge_hotplug_del
382 bridge_free(struct device
*dev
)
384 struct bridge_state
*bst
;
386 bst
= container_of(dev
, struct bridge_state
, dev
);
387 vlist_flush_all(&bst
->members
);
392 bridge_dump_info(struct device
*dev
, struct blob_buf
*b
)
394 struct bridge_state
*bst
;
395 struct bridge_member
*bm
;
398 bst
= container_of(dev
, struct bridge_state
, dev
);
400 system_if_dump_info(dev
, b
);
401 list
= blobmsg_open_array(b
, "bridge-members");
403 vlist_for_each_element(&bst
->members
, bm
, node
)
404 blobmsg_add_string(b
, NULL
, bm
->dev
.dev
->ifname
);
406 blobmsg_close_array(b
, list
);
410 bridge_config_init(struct device
*dev
)
412 struct bridge_state
*bst
;
413 struct blob_attr
*cur
;
416 bst
= container_of(dev
, struct bridge_state
, dev
);
421 vlist_update(&bst
->members
);
422 blobmsg_for_each_attr(cur
, bst
->ifnames
, rem
) {
423 bridge_add_member(bst
, blobmsg_data(cur
));
425 vlist_flush(&bst
->members
);
429 bridge_apply_settings(struct bridge_state
*bst
, struct blob_attr
**tb
)
431 struct bridge_config
*cfg
= &bst
->config
;
432 struct blob_attr
*cur
;
436 cfg
->forward_delay
= 2;
437 cfg
->igmp_snoop
= true;
439 if ((cur
= tb
[BRIDGE_ATTR_STP
]))
440 cfg
->stp
= blobmsg_get_bool(cur
);
442 if ((cur
= tb
[BRIDGE_ATTR_FORWARD_DELAY
]))
443 cfg
->forward_delay
= blobmsg_get_u32(cur
);
445 if ((cur
= tb
[BRIDGE_ATTR_IGMP_SNOOP
]))
446 cfg
->igmp_snoop
= blobmsg_get_bool(cur
);
448 if ((cur
= tb
[BRIDGE_ATTR_AGEING_TIME
])) {
449 cfg
->ageing_time
= blobmsg_get_u32(cur
);
450 cfg
->flags
|= BRIDGE_OPT_AGEING_TIME
;
453 if ((cur
= tb
[BRIDGE_ATTR_HELLO_TIME
])) {
454 cfg
->hello_time
= blobmsg_get_u32(cur
);
455 cfg
->flags
|= BRIDGE_OPT_HELLO_TIME
;
458 if ((cur
= tb
[BRIDGE_ATTR_MAX_AGE
])) {
459 cfg
->max_age
= blobmsg_get_u32(cur
);
460 cfg
->flags
|= BRIDGE_OPT_MAX_AGE
;
465 bridge_reload(struct device
*dev
, struct blob_attr
*attr
)
467 struct blob_attr
*tb_dev
[__DEV_ATTR_MAX
];
468 struct blob_attr
*tb_br
[__BRIDGE_ATTR_MAX
];
469 enum dev_change_type ret
= DEV_CONFIG_APPLIED
;
471 struct bridge_state
*bst
;
473 BUILD_BUG_ON(sizeof(diff
) < __BRIDGE_ATTR_MAX
/ 8);
474 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
476 bst
= container_of(dev
, struct bridge_state
, dev
);
478 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, tb_dev
,
479 blob_data(attr
), blob_len(attr
));
480 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, tb_br
,
481 blob_data(attr
), blob_len(attr
));
483 bst
->ifnames
= tb_br
[BRIDGE_ATTR_IFNAME
];
484 device_init_settings(dev
, tb_dev
);
485 bridge_apply_settings(bst
, tb_br
);
487 if (bst
->config_data
) {
488 struct blob_attr
*otb_dev
[__DEV_ATTR_MAX
];
489 struct blob_attr
*otb_br
[__BRIDGE_ATTR_MAX
];
491 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb_dev
,
492 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
495 config_diff(tb_dev
, otb_dev
, &device_attr_list
, &diff
);
496 if (diff
& ~(1 << DEV_ATTR_IFNAME
))
497 ret
= DEV_CONFIG_RESTART
;
499 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, otb_br
,
500 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
503 config_diff(tb_br
, otb_br
, &bridge_attr_list
, &diff
);
504 if (diff
& ~(1 << BRIDGE_ATTR_IFNAME
))
505 ret
= DEV_CONFIG_RESTART
;
507 bridge_config_init(dev
);
510 bst
->config_data
= attr
;
514 static struct device
*
515 bridge_create(const char *name
, struct blob_attr
*attr
)
517 struct bridge_state
*bst
;
518 struct device
*dev
= NULL
;
520 bst
= calloc(1, sizeof(*bst
));
525 device_init(dev
, &bridge_device_type
, name
);
526 dev
->config_pending
= true;
528 bst
->set_state
= dev
->set_state
;
529 dev
->set_state
= bridge_set_state
;
531 dev
->hotplug_ops
= &bridge_ops
;
533 vlist_init(&bst
->members
, avl_strcmp
, bridge_member_update
);
534 bst
->members
.keep_old
= true;
535 bridge_reload(dev
, attr
);